diff options
Diffstat (limited to 'drivers/mtd')
69 files changed, 6385 insertions, 4904 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index f6b775e63ac8..5ac265dde423 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -78,7 +78,7 @@ config MTD_REDBOOT_DIRECTORY_BLOCK option. The option specifies which Flash sectors holds the RedBoot - partition table. A zero or positive value gives an absolete + partition table. A zero or positive value gives an absolute erase block number. A negative value specifies a number of sectors before the end of the device. @@ -103,7 +103,7 @@ config MTD_CMDLINE_PARTS bool "Command line partition table parsing" depends on MTD_PARTITIONS = "y" ---help--- - Allow generic configuration of the MTD paritition tables via the kernel + Allow generic configuration of the MTD partition tables via the kernel command line. Multiple flash resources are supported for hardware where different kinds of flash memory are available. diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index a7ec5954caf5..6d8f30deb868 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -30,7 +30,6 @@ config MTD_JEDECPROBE config MTD_GEN_PROBE tristate - select OBSOLETE_INTERMODULE config MTD_CFI_ADV_OPTIONS bool "Flash chip driver advanced configuration options" diff --git a/drivers/mtd/chips/Makefile b/drivers/mtd/chips/Makefile index 8afe3092c4e3..75bc1c2a0f43 100644 --- a/drivers/mtd/chips/Makefile +++ b/drivers/mtd/chips/Makefile @@ -3,13 +3,6 @@ # # $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $ -# *** BIG UGLY NOTE *** -# -# The removal of get_module_symbol() and replacement with -# inter_module_register() et al has introduced a link order dependency -# here where previously there was none. We now have to ensure that -# the CFI command set drivers are linked before gen_probe.o - obj-$(CONFIG_MTD) += chipreg.o obj-$(CONFIG_MTD_AMDSTD) += amd_flash.o obj-$(CONFIG_MTD_CFI) += cfi_probe.o diff --git a/drivers/mtd/chips/amd_flash.c b/drivers/mtd/chips/amd_flash.c index 57115618c496..16eaca69fb5a 100644 --- a/drivers/mtd/chips/amd_flash.c +++ b/drivers/mtd/chips/amd_flash.c @@ -97,7 +97,6 @@ struct amd_flash_private { int interleave; int numchips; unsigned long chipshift; -// const char *im_name; struct flchip chips[0]; }; @@ -131,12 +130,6 @@ static struct mtd_chip_driver amd_flash_chipdrv = { .module = THIS_MODULE }; - - -static const char im_name[] = "amd_flash"; - - - static inline __u32 wide_read(struct map_info *map, __u32 addr) { if (map->buswidth == 1) { @@ -737,6 +730,7 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) offset += dev_size; } mtd->type = MTD_NORFLASH; + mtd->writesize = 1; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; mtd->erase = amd_flash_erase; diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 1c074d63ff3a..0d435814aaa1 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -331,13 +331,6 @@ read_pri_intelext(struct map_info *map, __u16 adr) return extp; } -/* This routine is made available to other mtd code via - * inter_module_register. It must only be accessed through - * inter_module_get which will bump the use count of this module. The - * addresses passed back in cfi are valid as long as the use count of - * this module is non-zero, i.e. between inter_module_get and - * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000. - */ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) { struct cfi_private *cfi = map->fldrv_priv; @@ -406,7 +399,7 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) for (i=0; i< cfi->numchips; i++) { cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp; cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp; - cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp; + cfi->chips[i].erase_time = 1000<<cfi->cfiq->BlockEraseTimeoutTyp; cfi->chips[i].ref_point_counter = 0; init_waitqueue_head(&(cfi->chips[i].wq)); } @@ -415,6 +408,11 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) return cfi_intelext_setup(mtd); } +struct mtd_info *cfi_cmdset_0003(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001"))); +struct mtd_info *cfi_cmdset_0200(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001"))); +EXPORT_SYMBOL_GPL(cfi_cmdset_0001); +EXPORT_SYMBOL_GPL(cfi_cmdset_0003); +EXPORT_SYMBOL_GPL(cfi_cmdset_0200); static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) { @@ -547,12 +545,12 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, if (extp->MinorVersion >= '4') { struct cfi_intelext_programming_regioninfo *prinfo; prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs]; - MTD_PROGREGION_SIZE(mtd) = cfi->interleave << prinfo->ProgRegShift; + mtd->writesize = cfi->interleave << prinfo->ProgRegShift; MTD_PROGREGION_CTRLMODE_VALID(mtd) = cfi->interleave * prinfo->ControlValid; MTD_PROGREGION_CTRLMODE_INVALID(mtd) = cfi->interleave * prinfo->ControlInvalid; - mtd->flags |= MTD_PROGRAM_REGIONS; + mtd->flags &= ~MTD_BIT_WRITEABLE; printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d\n", - map->name, MTD_PROGREGION_SIZE(mtd), + map->name, mtd->writesize, MTD_PROGREGION_CTRLMODE_VALID(mtd), MTD_PROGREGION_CTRLMODE_INVALID(mtd)); } @@ -896,26 +894,33 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip, /* * When a delay is required for the flash operation to complete, the - * xip_udelay() function is polling for both the given timeout and pending - * (but still masked) hardware interrupts. Whenever there is an interrupt - * pending then the flash erase or write operation is suspended, array mode - * restored and interrupts unmasked. Task scheduling might also happen at that - * point. The CPU eventually returns from the interrupt or the call to - * schedule() and the suspended flash operation is resumed for the remaining - * of the delay period. + * xip_wait_for_operation() function is polling for both the given timeout + * and pending (but still masked) hardware interrupts. Whenever there is an + * interrupt pending then the flash erase or write operation is suspended, + * array mode restored and interrupts unmasked. Task scheduling might also + * happen at that point. The CPU eventually returns from the interrupt or + * the call to schedule() and the suspended flash operation is resumed for + * the remaining of the delay period. * * Warning: this function _will_ fool interrupt latency tracing tools. */ -static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, - unsigned long adr, int usec) +static int __xipram xip_wait_for_operation( + struct map_info *map, struct flchip *chip, + unsigned long adr, int *chip_op_time ) { struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *cfip = cfi->cmdset_priv; map_word status, OK = CMD(0x80); - unsigned long suspended, start = xip_currtime(); + unsigned long usec, suspended, start, done; flstate_t oldstate, newstate; + start = xip_currtime(); + usec = *chip_op_time * 8; + if (usec == 0) + usec = 500000; + done = 0; + do { cpu_relax(); if (xip_irqpending() && cfip && @@ -932,9 +937,9 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, * we resume the whole thing at once). Yes, it * can happen! */ + usec -= done; map_write(map, CMD(0xb0), adr); map_write(map, CMD(0x70), adr); - usec -= xip_elapsed_since(start); suspended = xip_currtime(); do { if (xip_elapsed_since(suspended) > 100000) { @@ -944,7 +949,7 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, * This is a critical error but there * is not much we can do here. */ - return; + return -EIO; } status = map_read(map, adr); } while (!map_word_andequal(map, status, OK, OK)); @@ -1004,65 +1009,107 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, xip_cpu_idle(); } status = map_read(map, adr); + done = xip_elapsed_since(start); } while (!map_word_andequal(map, status, OK, OK) - && xip_elapsed_since(start) < usec); -} + && done < usec); -#define UDELAY(map, chip, adr, usec) xip_udelay(map, chip, adr, usec) + return (done >= usec) ? -ETIME : 0; +} /* * The INVALIDATE_CACHED_RANGE() macro is normally used in parallel while * the flash is actively programming or erasing since we have to poll for * the operation to complete anyway. We can't do that in a generic way with * a XIP setup so do it before the actual flash operation in this case - * and stub it out from INVALIDATE_CACHE_UDELAY. + * and stub it out from INVAL_CACHE_AND_WAIT. */ #define XIP_INVAL_CACHED_RANGE(map, from, size) \ INVALIDATE_CACHED_RANGE(map, from, size) -#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec) \ - UDELAY(map, chip, cmd_adr, usec) - -/* - * Extra notes: - * - * Activating this XIP support changes the way the code works a bit. For - * example the code to suspend the current process when concurrent access - * happens is never executed because xip_udelay() will always return with the - * same chip state as it was entered with. This is why there is no care for - * the presence of add_wait_queue() or schedule() calls from within a couple - * xip_disable()'d areas of code, like in do_erase_oneblock for example. - * The queueing and scheduling are always happening within xip_udelay(). - * - * Similarly, get_chip() and put_chip() just happen to always be executed - * with chip->state set to FL_READY (or FL_XIP_WHILE_*) where flash state - * is in array mode, therefore never executing many cases therein and not - * causing any problem with XIP. - */ +#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \ + xip_wait_for_operation(map, chip, cmd_adr, p_usec) #else #define xip_disable(map, chip, adr) #define xip_enable(map, chip, adr) #define XIP_INVAL_CACHED_RANGE(x...) +#define INVAL_CACHE_AND_WAIT inval_cache_and_wait_for_operation + +static int inval_cache_and_wait_for_operation( + struct map_info *map, struct flchip *chip, + unsigned long cmd_adr, unsigned long inval_adr, int inval_len, + int *chip_op_time ) +{ + struct cfi_private *cfi = map->fldrv_priv; + map_word status, status_OK = CMD(0x80); + int z, chip_state = chip->state; + unsigned long timeo; + + spin_unlock(chip->mutex); + if (inval_len) + INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len); + if (*chip_op_time) + cfi_udelay(*chip_op_time); + spin_lock(chip->mutex); + + timeo = *chip_op_time * 8 * HZ / 1000000; + if (timeo < HZ/2) + timeo = HZ/2; + timeo += jiffies; + + z = 0; + for (;;) { + if (chip->state != chip_state) { + /* Someone's suspended the operation: sleep */ + DECLARE_WAITQUEUE(wait, current); + + set_current_state(TASK_UNINTERRUPTIBLE); + add_wait_queue(&chip->wq, &wait); + spin_unlock(chip->mutex); + schedule(); + remove_wait_queue(&chip->wq, &wait); + timeo = jiffies + (HZ / 2); /* FIXME */ + spin_lock(chip->mutex); + continue; + } -#define UDELAY(map, chip, adr, usec) \ -do { \ - spin_unlock(chip->mutex); \ - cfi_udelay(usec); \ - spin_lock(chip->mutex); \ -} while (0) - -#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec) \ -do { \ - spin_unlock(chip->mutex); \ - INVALIDATE_CACHED_RANGE(map, adr, len); \ - cfi_udelay(usec); \ - spin_lock(chip->mutex); \ -} while (0) + status = map_read(map, cmd_adr); + if (map_word_andequal(map, status, status_OK, status_OK)) + break; + + /* OK Still waiting */ + if (time_after(jiffies, timeo)) { + map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; + return -ETIME; + } + + /* Latency issues. Drop the lock, wait a while and retry */ + z++; + spin_unlock(chip->mutex); + cfi_udelay(1); + spin_lock(chip->mutex); + } + + if (!z) { + if (!--(*chip_op_time)) + *chip_op_time = 1; + } else if (z > 1) + ++(*chip_op_time); + + /* Done and happy. */ + chip->state = FL_STATUS; + return 0; +} #endif +#define WAIT_TIMEOUT(map, chip, adr, udelay) \ + ({ int __udelay = (udelay); \ + INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); }) + + static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len) { unsigned long cmd_addr; @@ -1252,14 +1299,11 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, unsigned long adr, map_word datum, int mode) { struct cfi_private *cfi = map->fldrv_priv; - map_word status, status_OK, write_cmd; - unsigned long timeo; - int z, ret=0; + map_word status, write_cmd; + int ret=0; adr += chip->start; - /* Let's determine those according to the interleave only once */ - status_OK = CMD(0x80); switch (mode) { case FL_WRITING: write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41); @@ -1285,57 +1329,17 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, map_write(map, datum, adr); chip->state = mode; - INVALIDATE_CACHE_UDELAY(map, chip, adr, - adr, map_bankwidth(map), - chip->word_write_time); - - timeo = jiffies + (HZ/2); - z = 0; - for (;;) { - if (chip->state != mode) { - /* Someone's suspended the write. Sleep */ - DECLARE_WAITQUEUE(wait, current); - - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&chip->wq, &wait); - spin_unlock(chip->mutex); - schedule(); - remove_wait_queue(&chip->wq, &wait); - timeo = jiffies + (HZ / 2); /* FIXME */ - spin_lock(chip->mutex); - continue; - } - - status = map_read(map, adr); - if (map_word_andequal(map, status, status_OK, status_OK)) - break; - - /* OK Still waiting */ - if (time_after(jiffies, timeo)) { - map_write(map, CMD(0x70), adr); - chip->state = FL_STATUS; - xip_enable(map, chip, adr); - printk(KERN_ERR "%s: word write error (status timeout)\n", map->name); - ret = -EIO; - goto out; - } - - /* Latency issues. Drop the lock, wait a while and retry */ - z++; - UDELAY(map, chip, adr, 1); - } - if (!z) { - chip->word_write_time--; - if (!chip->word_write_time) - chip->word_write_time = 1; + ret = INVAL_CACHE_AND_WAIT(map, chip, adr, + adr, map_bankwidth(map), + &chip->word_write_time); + if (ret) { + xip_enable(map, chip, adr); + printk(KERN_ERR "%s: word write error (status timeout)\n", map->name); + goto out; } - if (z > 1) - chip->word_write_time++; - - /* Done and happy. */ - chip->state = FL_STATUS; /* check for errors */ + status = map_read(map, adr); if (map_word_bitsset(map, status, CMD(0x1a))) { unsigned long chipstatus = MERGESTATUS(status); @@ -1452,9 +1456,9 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, unsigned long *pvec_seek, int len) { struct cfi_private *cfi = map->fldrv_priv; - map_word status, status_OK, write_cmd, datum; - unsigned long cmd_adr, timeo; - int wbufsize, z, ret=0, word_gap, words; + map_word status, write_cmd, datum; + unsigned long cmd_adr; + int ret, wbufsize, word_gap, words; const struct kvec *vec; unsigned long vec_seek; @@ -1463,7 +1467,6 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, cmd_adr = adr & ~(wbufsize-1); /* Let's determine this according to the interleave only once */ - status_OK = CMD(0x80); write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9); spin_lock(chip->mutex); @@ -1477,12 +1480,14 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, ENABLE_VPP(map); xip_disable(map, chip, cmd_adr); - /* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set + /* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set [...], the device will not accept any more Write to Buffer commands". So we must check here and reset those bits if they're set. Otherwise we're just pissing in the wind */ - if (chip->state != FL_STATUS) + if (chip->state != FL_STATUS) { map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; + } status = map_read(map, cmd_adr); if (map_word_bitsset(map, status, CMD(0x30))) { xip_enable(map, chip, cmd_adr); @@ -1493,32 +1498,20 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, } chip->state = FL_WRITING_TO_BUFFER; - - z = 0; - for (;;) { - map_write(map, write_cmd, cmd_adr); - + map_write(map, write_cmd, cmd_adr); + ret = WAIT_TIMEOUT(map, chip, cmd_adr, 0); + if (ret) { + /* Argh. Not ready for write to buffer */ + map_word Xstatus = map_read(map, cmd_adr); + map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; status = map_read(map, cmd_adr); - if (map_word_andequal(map, status, status_OK, status_OK)) - break; - - UDELAY(map, chip, cmd_adr, 1); - - if (++z > 20) { - /* Argh. Not ready for write to buffer */ - map_word Xstatus; - map_write(map, CMD(0x70), cmd_adr); - chip->state = FL_STATUS; - Xstatus = map_read(map, cmd_adr); - /* Odd. Clear status bits */ - map_write(map, CMD(0x50), cmd_adr); - map_write(map, CMD(0x70), cmd_adr); - xip_enable(map, chip, cmd_adr); - printk(KERN_ERR "%s: Chip not ready for buffer write. status = %lx, Xstatus = %lx\n", - map->name, status.x[0], Xstatus.x[0]); - ret = -EIO; - goto out; - } + map_write(map, CMD(0x50), cmd_adr); + map_write(map, CMD(0x70), cmd_adr); + xip_enable(map, chip, cmd_adr); + printk(KERN_ERR "%s: Chip not ready for buffer write. Xstatus = %lx, status = %lx\n", + map->name, Xstatus.x[0], status.x[0]); + goto out; } /* Figure out the number of words to write */ @@ -1573,56 +1566,19 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, map_write(map, CMD(0xd0), cmd_adr); chip->state = FL_WRITING; - INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, - adr, len, - chip->buffer_write_time); - - timeo = jiffies + (HZ/2); - z = 0; - for (;;) { - if (chip->state != FL_WRITING) { - /* Someone's suspended the write. Sleep */ - DECLARE_WAITQUEUE(wait, current); - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&chip->wq, &wait); - spin_unlock(chip->mutex); - schedule(); - remove_wait_queue(&chip->wq, &wait); - timeo = jiffies + (HZ / 2); /* FIXME */ - spin_lock(chip->mutex); - continue; - } - - status = map_read(map, cmd_adr); - if (map_word_andequal(map, status, status_OK, status_OK)) - break; - - /* OK Still waiting */ - if (time_after(jiffies, timeo)) { - map_write(map, CMD(0x70), cmd_adr); - chip->state = FL_STATUS; - xip_enable(map, chip, cmd_adr); - printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name); - ret = -EIO; - goto out; - } - - /* Latency issues. Drop the lock, wait a while and retry */ - z++; - UDELAY(map, chip, cmd_adr, 1); - } - if (!z) { - chip->buffer_write_time--; - if (!chip->buffer_write_time) - chip->buffer_write_time = 1; + ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, + adr, len, + &chip->buffer_write_time); + if (ret) { + map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; + xip_enable(map, chip, cmd_adr); + printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name); + goto out; } - if (z > 1) - chip->buffer_write_time++; - - /* Done and happy. */ - chip->state = FL_STATUS; /* check for errors */ + status = map_read(map, cmd_adr); if (map_word_bitsset(map, status, CMD(0x1a))) { unsigned long chipstatus = MERGESTATUS(status); @@ -1693,6 +1649,11 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs, if (chipnum == cfi->numchips) return 0; } + + /* Be nice and reschedule with the chip in a usable state for other + processes. */ + cond_resched(); + } while (len); return 0; @@ -1713,17 +1674,12 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; - map_word status, status_OK; - unsigned long timeo; + map_word status; int retries = 3; - DECLARE_WAITQUEUE(wait, current); - int ret = 0; + int ret; adr += chip->start; - /* Let's determine this according to the interleave only once */ - status_OK = CMD(0x80); - retry: spin_lock(chip->mutex); ret = get_chip(map, chip, adr, FL_ERASING); @@ -1745,48 +1701,15 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, chip->state = FL_ERASING; chip->erase_suspended = 0; - INVALIDATE_CACHE_UDELAY(map, chip, adr, - adr, len, - chip->erase_time*1000/2); - - /* FIXME. Use a timer to check this, and return immediately. */ - /* Once the state machine's known to be working I'll do that */ - - timeo = jiffies + (HZ*20); - for (;;) { - if (chip->state != FL_ERASING) { - /* Someone's suspended the erase. Sleep */ - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&chip->wq, &wait); - spin_unlock(chip->mutex); - schedule(); - remove_wait_queue(&chip->wq, &wait); - spin_lock(chip->mutex); - continue; - } - if (chip->erase_suspended) { - /* This erase was suspended and resumed. - Adjust the timeout */ - timeo = jiffies + (HZ*20); /* FIXME */ - chip->erase_suspended = 0; - } - - status = map_read(map, adr); - if (map_word_andequal(map, status, status_OK, status_OK)) - break; - - /* OK Still waiting */ - if (time_after(jiffies, timeo)) { - map_write(map, CMD(0x70), adr); - chip->state = FL_STATUS; - xip_enable(map, chip, adr); - printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name); - ret = -EIO; - goto out; - } - - /* Latency issues. Drop the lock, wait a while and retry */ - UDELAY(map, chip, adr, 1000000/HZ); + ret = INVAL_CACHE_AND_WAIT(map, chip, adr, + adr, len, + &chip->erase_time); + if (ret) { + map_write(map, CMD(0x70), adr); + chip->state = FL_STATUS; + xip_enable(map, chip, adr); + printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name); + goto out; } /* We've broken this before. It doesn't hurt to be safe */ @@ -1815,7 +1738,6 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, ret = -EIO; } else if (chipstatus & 0x20 && retries--) { printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus); - timeo = jiffies + HZ; put_chip(map, chip, adr); spin_unlock(chip->mutex); goto retry; @@ -1921,15 +1843,11 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip { struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *extp = cfi->cmdset_priv; - map_word status, status_OK; - unsigned long timeo = jiffies + HZ; + int udelay; int ret; adr += chip->start; - /* Let's determine this according to the interleave only once */ - status_OK = CMD(0x80); - spin_lock(chip->mutex); ret = get_chip(map, chip, adr, FL_LOCKING); if (ret) { @@ -1954,41 +1872,21 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip * If Instant Individual Block Locking supported then no need * to delay. */ + udelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1000000/HZ : 0; - if (!extp || !(extp->FeatureSupport & (1 << 5))) - UDELAY(map, chip, adr, 1000000/HZ); - - /* FIXME. Use a timer to check this, and return immediately. */ - /* Once the state machine's known to be working I'll do that */ - - timeo = jiffies + (HZ*20); - for (;;) { - - status = map_read(map, adr); - if (map_word_andequal(map, status, status_OK, status_OK)) - break; - - /* OK Still waiting */ - if (time_after(jiffies, timeo)) { - map_write(map, CMD(0x70), adr); - chip->state = FL_STATUS; - xip_enable(map, chip, adr); - printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name); - put_chip(map, chip, adr); - spin_unlock(chip->mutex); - return -EIO; - } - - /* Latency issues. Drop the lock, wait a while and retry */ - UDELAY(map, chip, adr, 1); + ret = WAIT_TIMEOUT(map, chip, adr, udelay); + if (ret) { + map_write(map, CMD(0x70), adr); + chip->state = FL_STATUS; + xip_enable(map, chip, adr); + printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name); + goto out; } - /* Done and happy. */ - chip->state = FL_STATUS; xip_enable(map, chip, adr); - put_chip(map, chip, adr); +out: put_chip(map, chip, adr); spin_unlock(chip->mutex); - return 0; + return ret; } static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len) @@ -2445,28 +2343,8 @@ static void cfi_intelext_destroy(struct mtd_info *mtd) kfree(mtd->eraseregions); } -static char im_name_0001[] = "cfi_cmdset_0001"; -static char im_name_0003[] = "cfi_cmdset_0003"; -static char im_name_0200[] = "cfi_cmdset_0200"; - -static int __init cfi_intelext_init(void) -{ - inter_module_register(im_name_0001, THIS_MODULE, &cfi_cmdset_0001); - inter_module_register(im_name_0003, THIS_MODULE, &cfi_cmdset_0001); - inter_module_register(im_name_0200, THIS_MODULE, &cfi_cmdset_0001); - return 0; -} - -static void __exit cfi_intelext_exit(void) -{ - inter_module_unregister(im_name_0001); - inter_module_unregister(im_name_0003); - inter_module_unregister(im_name_0200); -} - -module_init(cfi_intelext_init); -module_exit(cfi_intelext_exit); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al."); MODULE_DESCRIPTION("MTD chip driver for Intel/Sharp flash chips"); +MODULE_ALIAS("cfi_cmdset_0003"); +MODULE_ALIAS("cfi_cmdset_0200"); diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index aed10bd5c3c3..1e01ad38b26e 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -236,6 +236,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) mtd->resume = cfi_amdstd_resume; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; + mtd->writesize = 1; if (cfi->cfi_mode==CFI_MODE_CFI){ unsigned char bootloc; @@ -326,7 +327,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) return cfi_amdstd_setup(mtd); } - +EXPORT_SYMBOL_GPL(cfi_cmdset_0002); static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) { @@ -1758,25 +1759,6 @@ static void cfi_amdstd_destroy(struct mtd_info *mtd) kfree(mtd->eraseregions); } -static char im_name[]="cfi_cmdset_0002"; - - -static int __init cfi_amdstd_init(void) -{ - inter_module_register(im_name, THIS_MODULE, &cfi_cmdset_0002); - return 0; -} - - -static void __exit cfi_amdstd_exit(void) -{ - inter_module_unregister(im_name); -} - - -module_init(cfi_amdstd_init); -module_exit(cfi_amdstd_exit); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp> et al."); MODULE_DESCRIPTION("MTD chip driver for AMD/Fujitsu flash chips"); diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index 0807c1c91e55..fae70a5db540 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -162,6 +162,7 @@ struct mtd_info *cfi_cmdset_0020(struct map_info *map, int primary) return cfi_staa_setup(map); } +EXPORT_SYMBOL_GPL(cfi_cmdset_0020); static struct mtd_info *cfi_staa_setup(struct map_info *map) { @@ -237,9 +238,8 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) mtd->unlock = cfi_staa_unlock; mtd->suspend = cfi_staa_suspend; mtd->resume = cfi_staa_resume; - mtd->flags = MTD_CAP_NORFLASH; - mtd->flags |= MTD_ECC; /* FIXME: Not all STMicro flashes have this */ - mtd->eccsize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */ + mtd->flags = MTD_CAP_NORFLASH & ~MTD_BIT_WRITEABLE; + mtd->writesize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */ map->fldrv = &cfi_staa_chipdrv; __module_get(THIS_MODULE); mtd->name = map->name; @@ -1410,20 +1410,4 @@ static void cfi_staa_destroy(struct mtd_info *mtd) kfree(cfi); } -static char im_name[]="cfi_cmdset_0020"; - -static int __init cfi_staa_init(void) -{ - inter_module_register(im_name, THIS_MODULE, &cfi_cmdset_0020); - return 0; -} - -static void __exit cfi_staa_exit(void) -{ - inter_module_unregister(im_name); -} - -module_init(cfi_staa_init); -module_exit(cfi_staa_exit); - MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index e636aa86bc24..4bf9f8cac0dd 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -349,12 +349,12 @@ static void print_cfi_ident(struct cfi_ident *cfip) else printk("No Vpp line\n"); - printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp); - printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp)); + printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp); + printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp)); if (cfip->BufWriteTimeoutTyp || cfip->BufWriteTimeoutMax) { - printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp); - printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp)); + printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp); + printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp)); } else printk("Full buffer write not supported\n"); diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c index 41bd59d20d85..cdb0f590b40c 100644 --- a/drivers/mtd/chips/gen_probe.c +++ b/drivers/mtd/chips/gen_probe.c @@ -37,8 +37,15 @@ struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp) if (!mtd) mtd = check_cmd_set(map, 0); /* Then the secondary */ - if (mtd) + if (mtd) { + if (mtd->size > map->size) { + printk(KERN_WARNING "Reducing visibility of %ldKiB chip to %ldKiB\n", + (unsigned long)mtd->size >> 10, + (unsigned long)map->size >> 10); + mtd->size = map->size; + } return mtd; + } printk(KERN_WARNING"gen_probe: No supported Vendor Command Set found\n"); @@ -100,7 +107,12 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi * Align bitmap storage size to full byte. */ max_chips = map->size >> cfi.chipshift; - mapsize = (max_chips / 8) + ((max_chips % 8) ? 1 : 0); + if (!max_chips) { + printk(KERN_WARNING "NOR chip too large to fit in mapping. Attempting to cope...\n"); + max_chips = 1; + } + + mapsize = (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG; chip_map = kmalloc(mapsize, GFP_KERNEL); if (!chip_map) { printk(KERN_WARNING "%s: kmalloc failed for CFI chip map\n", map->name); @@ -194,25 +206,28 @@ static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map, { struct cfi_private *cfi = map->fldrv_priv; __u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID; -#if defined(CONFIG_MODULES) && defined(HAVE_INTER_MODULE) - char probename[32]; +#ifdef CONFIG_MODULES + char probename[16+sizeof(MODULE_SYMBOL_PREFIX)]; cfi_cmdset_fn_t *probe_function; - sprintf(probename, "cfi_cmdset_%4.4X", type); + sprintf(probename, MODULE_SYMBOL_PREFIX "cfi_cmdset_%4.4X", type); - probe_function = inter_module_get_request(probename, probename); + probe_function = __symbol_get(probename); + if (!probe_function) { + request_module(probename + sizeof(MODULE_SYMBOL_PREFIX) - 1); + probe_function = __symbol_get(probename); + } if (probe_function) { struct mtd_info *mtd; mtd = (*probe_function)(map, primary); /* If it was happy, it'll have increased its own use count */ - inter_module_put(probename); + symbol_put_addr(probe_function); return mtd; } #endif - printk(KERN_NOTICE "Support for command set %04X not present\n", - type); + printk(KERN_NOTICE "Support for command set %04X not present\n", type); return NULL; } @@ -226,12 +241,8 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary) return NULL; switch(type){ - /* Urgh. Ifdefs. The version with weak symbols was - * _much_ nicer. Shame it didn't seem to work on - * anything but x86, really. - * But we can't rely in inter_module_get() because - * that'd mean we depend on link order. - */ + /* We need these for the !CONFIG_MODULES case, + because symbol_get() doesn't work there */ #ifdef CONFIG_MTD_CFI_INTELEXT case 0x0001: case 0x0003: @@ -246,9 +257,9 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary) case 0x0020: return cfi_cmdset_0020(map, primary); #endif + default: + return cfi_cmdset_unknown(map, primary); } - - return cfi_cmdset_unknown(map, primary); } MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index bd2e876a814b..763925747db6 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -70,7 +70,7 @@ static struct mtd_info *map_ram_probe(struct map_info *map) mtd->read = mapram_read; mtd->write = mapram_write; mtd->sync = mapram_nop; - mtd->flags = MTD_CAP_RAM | MTD_VOLATILE; + mtd->flags = MTD_CAP_RAM; mtd->erasesize = PAGE_SIZE; while(mtd->size & (mtd->erasesize - 1)) diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c index 624c12c232c8..bc6ee9ef8a31 100644 --- a/drivers/mtd/chips/map_rom.c +++ b/drivers/mtd/chips/map_rom.c @@ -46,9 +46,7 @@ static struct mtd_info *map_rom_probe(struct map_info *map) mtd->write = maprom_write; mtd->sync = maprom_nop; mtd->flags = MTD_CAP_ROM; - mtd->erasesize = 131072; - while(mtd->size & (mtd->erasesize - 1)) - mtd->erasesize >>= 1; + mtd->erasesize = map->size; __module_get(THIS_MODULE); return mtd; diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c index 3cc0b23c5865..967abbecdff9 100644 --- a/drivers/mtd/chips/sharp.c +++ b/drivers/mtd/chips/sharp.c @@ -140,6 +140,7 @@ static struct mtd_info *sharp_probe(struct map_info *map) mtd->suspend = sharp_suspend; mtd->resume = sharp_resume; mtd->flags = MTD_CAP_NORFLASH; + mtd->writesize = 1; mtd->name = map->name; memset(sharp, 0, sizeof(*sharp)); diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index 7fac438b5c32..16c02b5ccf7e 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -47,6 +47,11 @@ config MTD_MS02NV accelerator. Say Y here if you have a DECstation 5000/2x0 or a DECsystem 5900 equipped with such a module. + If you want to compile this driver as a module ( = code which can be + inserted in and removed from the running kernel whenever you want), + say M here and read <file:Documentation/modules.txt>. The module will + be called ms02-nv.o. + config MTD_DATAFLASH tristate "Support for AT45xxx DataFlash" depends on MTD && SPI_MASTER && EXPERIMENTAL @@ -209,7 +214,6 @@ config MTD_DOC2001PLUS config MTD_DOCPROBE tristate select MTD_DOCECC - select OBSOLETE_INTERMODULE config MTD_DOCECC tristate diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile index b6573670316f..0f788d5c4bf8 100644 --- a/drivers/mtd/devices/Makefile +++ b/drivers/mtd/devices/Makefile @@ -3,13 +3,6 @@ # # $Id: Makefile.common,v 1.7 2004/12/22 17:51:15 joern Exp $ -# *** BIG UGLY NOTE *** -# -# The removal of get_module_symbol() and replacement with -# inter_module_register() et al has introduced a link order dependency -# here where previously there was none. We now have to ensure that -# doc200[01].o are linked before docprobe.o - obj-$(CONFIG_MTD_DOC2000) += doc2000.o obj-$(CONFIG_MTD_DOC2001) += doc2001.o obj-$(CONFIG_MTD_DOC2001PLUS) += doc2001plus.o diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 4160b8334c53..0d98c223c5fc 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -4,7 +4,7 @@ * block2mtd.c - create an mtd from a block device * * Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk> - * Copyright (C) 2004,2005 Jörn Engel <joern@wh.fh-wedel.de> + * Copyright (C) 2004-2006 Jörn Engel <joern@wh.fh-wedel.de> * * Licence: GPL */ @@ -331,7 +331,6 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) dev->mtd.writev = default_mtd_writev; dev->mtd.sync = block2mtd_sync; dev->mtd.read = block2mtd_read; - dev->mtd.readv = default_mtd_readv; dev->mtd.priv = dev; dev->mtd.owner = THIS_MODULE; @@ -351,6 +350,12 @@ devinit_err: } +/* This function works similar to reguler strtoul. In addition, it + * allows some suffixes for a more human-readable number format: + * ki, Ki, kiB, KiB - multiply result with 1024 + * Mi, MiB - multiply result with 1024^2 + * Gi, GiB - multiply result with 1024^3 + */ static int ustrtoul(const char *cp, char **endp, unsigned int base) { unsigned long result = simple_strtoul(cp, endp, base); @@ -359,11 +364,16 @@ static int ustrtoul(const char *cp, char **endp, unsigned int base) result *= 1024; case 'M': result *= 1024; + case 'K': case 'k': result *= 1024; /* By dwmw2 editorial decree, "ki", "Mi" or "Gi" are to be used. */ - if ((*endp)[1] == 'i') - (*endp) += 2; + if ((*endp)[1] == 'i') { + if ((*endp)[2] == 'B') + (*endp) += 3; + else + (*endp) += 2; + } } return result; } @@ -418,7 +428,8 @@ static inline void kill_final_newline(char *str) static int block2mtd_setup(const char *val, struct kernel_param *kp) { - char buf[80+12], *str=buf; /* 80 for device, 12 for erase size */ + char buf[80+12]; /* 80 for device, 12 for erase size */ + char *str = buf; char *token[2]; char *name; size_t erase_size = PAGE_SIZE; @@ -430,7 +441,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp) strcpy(str, val); kill_final_newline(str); - for (i=0; i<2; i++) + for (i = 0; i < 2; i++) token[i] = strsep(&str, ","); if (str) @@ -449,8 +460,10 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp) if (token[1]) { ret = parse_num(&erase_size, token[1]); - if (ret) + if (ret) { + kfree(name); parse_err("illegal erase size"); + } } add_device(name, erase_size); diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index 23e7a5c7d2c1..c54e40464d82 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -59,13 +59,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); -static int doc_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel); -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, u_char *buf); -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, const u_char *buf); +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len, size_t *retlen, const u_char *buf); static int doc_erase (struct mtd_info *mtd, struct erase_info *instr); @@ -517,16 +514,9 @@ static int DoC2k_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2) return retval; } -static const char im_name[] = "DoC2k_init"; - -/* This routine is made available to other mtd code via - * inter_module_register. It must only be accessed through - * inter_module_get which will bump the use count of this module. The - * addresses passed back in mtd are valid as long as the use count of - * this module is non-zero, i.e. between inter_module_get and - * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000. - */ -static void DoC2k_init(struct mtd_info *mtd) +/* This routine is found from the docprobe code by symbol_get(), + * which will bump the use count of this module. */ +void DoC2k_init(struct mtd_info *mtd) { struct DiskOnChip *this = mtd->priv; struct DiskOnChip *old = NULL; @@ -586,7 +576,7 @@ static void DoC2k_init(struct mtd_info *mtd) mtd->ecctype = MTD_ECC_RS_DiskOnChip; mtd->size = 0; mtd->erasesize = 0; - mtd->oobblock = 512; + mtd->writesize = 512; mtd->oobsize = 16; mtd->owner = THIS_MODULE; mtd->erase = doc_erase; @@ -594,9 +584,6 @@ static void DoC2k_init(struct mtd_info *mtd) mtd->unpoint = NULL; mtd->read = doc_read; mtd->write = doc_write; - mtd->read_ecc = doc_read_ecc; - mtd->write_ecc = doc_write_ecc; - mtd->writev_ecc = doc_writev_ecc; mtd->read_oob = doc_read_oob; mtd->write_oob = doc_write_oob; mtd->sync = NULL; @@ -623,6 +610,7 @@ static void DoC2k_init(struct mtd_info *mtd) return; } } +EXPORT_SYMBOL_GPL(DoC2k_init); static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) @@ -971,72 +959,18 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, return 0; } -static int doc_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel) -{ - static char static_buf[512]; - static DEFINE_MUTEX(writev_buf_mutex); - - size_t totretlen = 0; - size_t thisvecofs = 0; - int ret= 0; - - mutex_lock(&writev_buf_mutex); - - while(count) { - size_t thislen, thisretlen; - unsigned char *buf; - - buf = vecs->iov_base + thisvecofs; - thislen = vecs->iov_len - thisvecofs; - - - if (thislen >= 512) { - thislen = thislen & ~(512-1); - thisvecofs += thislen; - } else { - /* Not enough to fill a page. Copy into buf */ - memcpy(static_buf, buf, thislen); - buf = &static_buf[thislen]; - - while(count && thislen < 512) { - vecs++; - count--; - thisvecofs = min((512-thislen), vecs->iov_len); - memcpy(buf, vecs->iov_base, thisvecofs); - thislen += thisvecofs; - buf += thisvecofs; - } - buf = static_buf; - } - if (count && thisvecofs == vecs->iov_len) { - thisvecofs = 0; - vecs++; - count--; - } - ret = doc_write_ecc(mtd, to, thislen, &thisretlen, buf, eccbuf, oobsel); - - totretlen += thisretlen; - - if (ret || thisretlen != thislen) - break; - - to += thislen; - } - - mutex_unlock(&writev_buf_mutex); - *retlen = totretlen; - return ret; -} - - -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t * retlen, u_char * buf) +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { struct DiskOnChip *this = mtd->priv; int len256 = 0, ret; struct Nand *mychip; + uint8_t *buf = ops->oobbuf; + size_t len = ops->len; + + BUG_ON(ops->mode != MTD_OOB_PLACE); + + ofs += ops->ooboffs; mutex_lock(&this->lock); @@ -1077,7 +1011,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, DoC_ReadBuf(this, &buf[len256], len - len256); - *retlen = len; + ops->retlen = len; /* Reading the full OOB data drops us off of the end of the page, * causing the flash device to go into busy mode, so we need * to wait until ready 11.4.1 and Toshiba TC58256FT docs */ @@ -1192,17 +1126,20 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len, } -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t * retlen, const u_char * buf) +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { - struct DiskOnChip *this = mtd->priv; - int ret; + struct DiskOnChip *this = mtd->priv; + int ret; - mutex_lock(&this->lock); - ret = doc_write_oob_nolock(mtd, ofs, len, retlen, buf); + BUG_ON(ops->mode != MTD_OOB_PLACE); + + mutex_lock(&this->lock); + ret = doc_write_oob_nolock(mtd, ofs + ops->ooboffs, ops->len, + &ops->retlen, ops->oobbuf); - mutex_unlock(&this->lock); - return ret; + mutex_unlock(&this->lock); + return ret; } static int doc_erase(struct mtd_info *mtd, struct erase_info *instr) @@ -1277,12 +1214,6 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr) * ****************************************************************************/ -static int __init init_doc2000(void) -{ - inter_module_register(im_name, THIS_MODULE, &DoC2k_init); - return 0; -} - static void __exit cleanup_doc2000(void) { struct mtd_info *mtd; @@ -1298,11 +1229,9 @@ static void __exit cleanup_doc2000(void) kfree(this->chips); kfree(mtd); } - inter_module_unregister(im_name); } module_exit(cleanup_doc2000); -module_init(init_doc2000); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al."); diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c index 681a9c73a2a3..0cf022a69e65 100644 --- a/drivers/mtd/devices/doc2001.c +++ b/drivers/mtd/devices/doc2001.c @@ -43,10 +43,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, u_char *buf); -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, const u_char *buf); +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); static int doc_erase (struct mtd_info *mtd, struct erase_info *instr); static struct mtd_info *docmillist = NULL; @@ -324,16 +324,9 @@ static int DoCMil_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2) return retval; } -static const char im_name[] = "DoCMil_init"; - -/* This routine is made available to other mtd code via - * inter_module_register. It must only be accessed through - * inter_module_get which will bump the use count of this module. The - * addresses passed back in mtd are valid as long as the use count of - * this module is non-zero, i.e. between inter_module_get and - * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000. - */ -static void DoCMil_init(struct mtd_info *mtd) +/* This routine is found from the docprobe code by symbol_get(), + * which will bump the use count of this module. */ +void DoCMil_init(struct mtd_info *mtd) { struct DiskOnChip *this = mtd->priv; struct DiskOnChip *old = NULL; @@ -368,7 +361,7 @@ static void DoCMil_init(struct mtd_info *mtd) /* FIXME: erase size is not always 8KiB */ mtd->erasesize = 0x2000; - mtd->oobblock = 512; + mtd->writesize = 512; mtd->oobsize = 16; mtd->owner = THIS_MODULE; mtd->erase = doc_erase; @@ -376,8 +369,6 @@ static void DoCMil_init(struct mtd_info *mtd) mtd->unpoint = NULL; mtd->read = doc_read; mtd->write = doc_write; - mtd->read_ecc = doc_read_ecc; - mtd->write_ecc = doc_write_ecc; mtd->read_oob = doc_read_oob; mtd->write_oob = doc_write_oob; mtd->sync = NULL; @@ -401,6 +392,7 @@ static void DoCMil_init(struct mtd_info *mtd) return; } } +EXPORT_SYMBOL_GPL(DoCMil_init); static int doc_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) @@ -670,8 +662,8 @@ static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, return ret; } -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, u_char *buf) +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { #ifndef USE_MEMCPY int i; @@ -680,6 +672,12 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, struct DiskOnChip *this = mtd->priv; void __iomem *docptr = this->virtadr; struct Nand *mychip = &this->chips[ofs >> this->chipshift]; + uint8_t *buf = ops->oobbuf; + size_t len = ops->len; + + BUG_ON(ops->mode != MTD_OOB_PLACE); + + ofs += ops->ooboffs; /* Find the chip which is to be used and select it */ if (this->curfloor != mychip->floor) { @@ -716,13 +714,13 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, #endif buf[len - 1] = ReadDOC(docptr, LastDataRead); - *retlen = len; + ops->retlen = len; return 0; } -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, const u_char *buf) +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { #ifndef USE_MEMCPY int i; @@ -732,6 +730,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, struct DiskOnChip *this = mtd->priv; void __iomem *docptr = this->virtadr; struct Nand *mychip = &this->chips[ofs >> this->chipshift]; + uint8_t *buf = ops->oobbuf; + size_t len = ops->len; + + BUG_ON(ops->mode != MTD_OOB_PLACE); + + ofs += ops->ooboffs; /* Find the chip which is to be used and select it */ if (this->curfloor != mychip->floor) { @@ -783,12 +787,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, if (ReadDOC(docptr, Mil_CDSN_IO) & 1) { printk("Error programming oob data\n"); /* FIXME: implement Bad Block Replacement (in nftl.c ??) */ - *retlen = 0; + ops->retlen = 0; ret = -EIO; } dummy = ReadDOC(docptr, LastDataRead); - *retlen = len; + ops->retlen = len; return ret; } @@ -856,12 +860,6 @@ int doc_erase (struct mtd_info *mtd, struct erase_info *instr) * ****************************************************************************/ -static int __init init_doc2001(void) -{ - inter_module_register(im_name, THIS_MODULE, &DoCMil_init); - return 0; -} - static void __exit cleanup_doc2001(void) { struct mtd_info *mtd; @@ -877,11 +875,9 @@ static void __exit cleanup_doc2001(void) kfree(this->chips); kfree(mtd); } - inter_module_unregister(im_name); } module_exit(cleanup_doc2001); -module_init(init_doc2001); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al."); diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c index 5f57f29efee4..66cb1e50469a 100644 --- a/drivers/mtd/devices/doc2001plus.c +++ b/drivers/mtd/devices/doc2001plus.c @@ -47,10 +47,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel); -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, u_char *buf); -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, const u_char *buf); +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops); static int doc_erase (struct mtd_info *mtd, struct erase_info *instr); static struct mtd_info *docmilpluslist = NULL; @@ -447,16 +447,9 @@ static int DoCMilPlus_is_alias(struct DiskOnChip *doc1, struct DiskOnChip *doc2) return retval; } -static const char im_name[] = "DoCMilPlus_init"; - -/* This routine is made available to other mtd code via - * inter_module_register. It must only be accessed through - * inter_module_get which will bump the use count of this module. The - * addresses passed back in mtd are valid as long as the use count of - * this module is non-zero, i.e. between inter_module_get and - * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000. - */ -static void DoCMilPlus_init(struct mtd_info *mtd) +/* This routine is found from the docprobe code by symbol_get(), + * which will bump the use count of this module. */ +void DoCMilPlus_init(struct mtd_info *mtd) { struct DiskOnChip *this = mtd->priv; struct DiskOnChip *old = NULL; @@ -490,7 +483,7 @@ static void DoCMilPlus_init(struct mtd_info *mtd) mtd->size = 0; mtd->erasesize = 0; - mtd->oobblock = 512; + mtd->writesize = 512; mtd->oobsize = 16; mtd->owner = THIS_MODULE; mtd->erase = doc_erase; @@ -498,8 +491,6 @@ static void DoCMilPlus_init(struct mtd_info *mtd) mtd->unpoint = NULL; mtd->read = doc_read; mtd->write = doc_write; - mtd->read_ecc = doc_read_ecc; - mtd->write_ecc = doc_write_ecc; mtd->read_oob = doc_read_oob; mtd->write_oob = doc_write_oob; mtd->sync = NULL; @@ -524,6 +515,7 @@ static void DoCMilPlus_init(struct mtd_info *mtd) return; } } +EXPORT_SYMBOL_GPL(DoCMilPlus_init); #if 0 static int doc_dumpblk(struct mtd_info *mtd, loff_t from) @@ -876,14 +868,20 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, return ret; } -static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, u_char *buf) +static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { loff_t fofs, base; struct DiskOnChip *this = mtd->priv; void __iomem * docptr = this->virtadr; struct Nand *mychip = &this->chips[ofs >> this->chipshift]; size_t i, size, got, want; + uint8_t *buf = ops->oobbuf; + size_t len = ops->len; + + BUG_ON(ops->mode != MTD_OOB_PLACE); + + ofs += ops->ooboffs; DoC_CheckASIC(docptr); @@ -949,12 +947,12 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, /* Disable flash internally */ WriteDOC(0, docptr, Mplus_FlashSelect); - *retlen = len; + ops->retlen = len; return 0; } -static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, - size_t *retlen, const u_char *buf) +static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, + struct mtd_oob_ops *ops) { volatile char dummy; loff_t fofs, base; @@ -963,6 +961,12 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, struct Nand *mychip = &this->chips[ofs >> this->chipshift]; size_t i, size, got, want; int ret = 0; + uint8_t *buf = ops->oobbuf; + size_t len = ops->len; + + BUG_ON(ops->mode != MTD_OOB_PLACE); + + ofs += ops->ooboffs; DoC_CheckASIC(docptr); @@ -1038,7 +1042,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, printk("MTD: Error 0x%x programming oob at 0x%x\n", dummy, (int)ofs); /* FIXME: implement Bad Block Replacement */ - *retlen = 0; + ops->retlen = 0; ret = -EIO; } dummy = ReadDOC(docptr, Mplus_LastDataRead); @@ -1051,7 +1055,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, /* Disable flash internally */ WriteDOC(0, docptr, Mplus_FlashSelect); - *retlen = len; + ops->retlen = len; return ret; } @@ -1122,12 +1126,6 @@ int doc_erase(struct mtd_info *mtd, struct erase_info *instr) * ****************************************************************************/ -static int __init init_doc2001plus(void) -{ - inter_module_register(im_name, THIS_MODULE, &DoCMilPlus_init); - return 0; -} - static void __exit cleanup_doc2001plus(void) { struct mtd_info *mtd; @@ -1143,11 +1141,9 @@ static void __exit cleanup_doc2001plus(void) kfree(this->chips); kfree(mtd); } - inter_module_unregister(im_name); } module_exit(cleanup_doc2001plus); -module_init(init_doc2001plus); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Greg Ungerer <gerg@snapgear.com> et al."); diff --git a/drivers/mtd/devices/docprobe.c b/drivers/mtd/devices/docprobe.c index 13178b9dd00a..593bb033a3fa 100644 --- a/drivers/mtd/devices/docprobe.c +++ b/drivers/mtd/devices/docprobe.c @@ -231,6 +231,10 @@ static inline int __init doccheck(void __iomem *potential, unsigned long physadr static int docfound; +extern void DoC2k_init(struct mtd_info *); +extern void DoCMil_init(struct mtd_info *); +extern void DoCMilPlus_init(struct mtd_info *); + static void __init DoC_Probe(unsigned long physadr) { void __iomem *docptr; @@ -239,8 +243,6 @@ static void __init DoC_Probe(unsigned long physadr) int ChipID; char namebuf[15]; char *name = namebuf; - char *im_funcname = NULL; - char *im_modname = NULL; void (*initroutine)(struct mtd_info *) = NULL; docptr = ioremap(physadr, DOC_IOREMAP_LEN); @@ -278,41 +280,33 @@ static void __init DoC_Probe(unsigned long physadr) switch(ChipID) { case DOC_ChipID_Doc2kTSOP: name="2000 TSOP"; - im_funcname = "DoC2k_init"; - im_modname = "doc2000"; + initroutine = symbol_request(DoC2k_init); break; case DOC_ChipID_Doc2k: name="2000"; - im_funcname = "DoC2k_init"; - im_modname = "doc2000"; + initroutine = symbol_request(DoC2k_init); break; case DOC_ChipID_DocMil: name="Millennium"; #ifdef DOC_SINGLE_DRIVER - im_funcname = "DoC2k_init"; - im_modname = "doc2000"; + initroutine = symbol_request(DoC2k_init); #else - im_funcname = "DoCMil_init"; - im_modname = "doc2001"; + initroutine = symbol_request(DoCMil_init); #endif /* DOC_SINGLE_DRIVER */ break; case DOC_ChipID_DocMilPlus16: case DOC_ChipID_DocMilPlus32: name="MillenniumPlus"; - im_funcname = "DoCMilPlus_init"; - im_modname = "doc2001plus"; + initroutine = symbol_request(DoCMilPlus_init); break; } - if (im_funcname) - initroutine = inter_module_get_request(im_funcname, im_modname); - if (initroutine) { (*initroutine)(mtd); - inter_module_put(im_funcname); + symbol_put_addr(initroutine); return; } printk(KERN_NOTICE "Cannot find driver for DiskOnChip %s at 0x%lX\n", name, physadr); diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c index 29b0ddaa324e..4ea50a1dda85 100644 --- a/drivers/mtd/devices/lart.c +++ b/drivers/mtd/devices/lart.c @@ -635,6 +635,7 @@ int __init lart_flash_init (void) printk ("%s: This looks like a LART board to me.\n",module_name); mtd.name = module_name; mtd.type = MTD_NORFLASH; + mtd.writesize = 1; mtd.flags = MTD_CAP_NORFLASH; mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN; mtd.erasesize = FLASH_BLOCKSIZE_MAIN; diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 04e65d5dae00..a8466141e914 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -465,6 +465,7 @@ static int __devinit m25p_probe(struct spi_device *spi) flash->mtd.name = spi->dev.bus_id; flash->mtd.type = MTD_NORFLASH; + flash->mtd.writesize = 1; flash->mtd.flags = MTD_CAP_NORFLASH; flash->mtd.size = info->sector_size * info->n_sectors; flash->mtd.erasesize = info->sector_size; diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c index 485f663493d2..4ab7670770e4 100644 --- a/drivers/mtd/devices/ms02-nv.c +++ b/drivers/mtd/devices/ms02-nv.c @@ -219,7 +219,7 @@ static int __init ms02nv_init_one(ulong addr) mp->uaddr = phys_to_virt(fixaddr); mtd->type = MTD_RAM; - mtd->flags = MTD_CAP_RAM | MTD_XIP; + mtd->flags = MTD_CAP_RAM; mtd->size = fixsize; mtd->name = (char *)ms02nv_name; mtd->owner = THIS_MODULE; diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index 1443117fd8f4..b4438eacfd80 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -106,6 +106,7 @@ int mtdram_init_device(struct mtd_info *mtd, void *mapped_address, mtd->type = MTD_RAM; mtd->flags = MTD_CAP_RAM; mtd->size = size; + mtd->writesize = 1; mtd->erasesize = MTDRAM_ERASE_SIZE; mtd->priv = mapped_address; diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index e8685ee6c1e4..e09e416667d3 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -1,8 +1,8 @@ /** * $Id: phram.c,v 1.16 2005/11/07 11:14:25 gleixner Exp $ * - * Copyright (c) ???? Jochen Schäuble <psionic@psionic.de> - * Copyright (c) 2003-2004 Jörn Engel <joern@wh.fh-wedel.de> + * Copyright (c) ???? Jochen Schäuble <psionic@psionic.de> + * Copyright (c) 2003-2004 Jörn Engel <joern@wh.fh-wedel.de> * * Usage: * @@ -142,7 +142,7 @@ static int register_device(char *name, unsigned long start, unsigned long len) new->mtd.name = name; new->mtd.size = len; - new->mtd.flags = MTD_CAP_RAM | MTD_ERASEABLE | MTD_VOLATILE; + new->mtd.flags = MTD_CAP_RAM; new->mtd.erase = phram_erase; new->mtd.point = phram_point; new->mtd.unpoint = phram_unpoint; @@ -266,12 +266,16 @@ static int phram_setup(const char *val, struct kernel_param *kp) return 0; ret = parse_num32(&start, token[1]); - if (ret) + if (ret) { + kfree(name); parse_err("illegal start address\n"); + } ret = parse_num32(&len, token[2]); - if (ret) + if (ret) { + kfree(name); parse_err("illegal device length\n"); + } register_device(name, start, len); @@ -296,5 +300,5 @@ module_init(init_phram); module_exit(cleanup_phram); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Jörn Engel <joern@wh.fh-wedel.de>"); +MODULE_AUTHOR("Jörn Engel <joern@wh.fh-wedel.de>"); MODULE_DESCRIPTION("MTD driver for physical RAM"); diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index 6faee6c6958c..b3f665e3c38b 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -200,8 +200,7 @@ static int register_device(char *name, unsigned long start, unsigned long length (*curmtd)->mtdinfo->name = name; (*curmtd)->mtdinfo->size = length; - (*curmtd)->mtdinfo->flags = MTD_CLEAR_BITS | MTD_SET_BITS | - MTD_WRITEB_WRITEABLE | MTD_VOLATILE | MTD_CAP_RAM; + (*curmtd)->mtdinfo->flags = MTD_CAP_RAM; (*curmtd)->mtdinfo->erase = slram_erase; (*curmtd)->mtdinfo->point = slram_point; (*curmtd)->mtdinfo->unpoint = slram_unpoint; diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index a3b92479719d..1e21a2c3dd29 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -36,6 +36,7 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/nftl.h> #include <linux/mtd/inftl.h> +#include <linux/mtd/nand.h> #include <asm/uaccess.h> #include <asm/errno.h> #include <asm/io.h> @@ -79,14 +80,12 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) inftl->mbd.devnum = -1; inftl->mbd.blksize = 512; inftl->mbd.tr = tr; - memcpy(&inftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo)); - inftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY; - if (INFTL_mount(inftl) < 0) { + if (INFTL_mount(inftl) < 0) { printk(KERN_WARNING "INFTL: could not mount device\n"); kfree(inftl); return; - } + } /* OK, it's a new one. Set up all the data structures. */ @@ -152,6 +151,69 @@ static void inftl_remove_dev(struct mtd_blktrans_dev *dev) */ /* + * Read oob data from flash + */ +int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs & (mtd->writesize - 1); + ops.ooblen = len; + ops.oobbuf = buf; + ops.datbuf = NULL; + ops.len = len; + + res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + +/* + * Write oob data to flash + */ +int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs & (mtd->writesize - 1); + ops.ooblen = len; + ops.oobbuf = buf; + ops.datbuf = NULL; + ops.len = len; + + res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + +/* + * Write data and oob to flash + */ +static int inftl_write(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf, uint8_t *oob) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs; + ops.ooblen = mtd->oobsize; + ops.oobbuf = oob; + ops.datbuf = buf; + ops.len = len; + + res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + +/* * INFTL_findfreeblock: Find a free Erase Unit on the INFTL partition. * This function is used when the give Virtual Unit Chain. */ @@ -198,10 +260,11 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned u16 BlockMap[MAX_SECTORS_PER_UNIT]; unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT]; unsigned int thisEUN, prevEUN, status; + struct mtd_info *mtd = inftl->mbd.mtd; int block, silly; unsigned int targetEUN; struct inftl_oob oob; - size_t retlen; + size_t retlen; DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d," "pending=%d)\n", inftl, thisVUC, pendingblock); @@ -221,18 +284,18 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned * Scan to find the Erase Unit which holds the actual data for each * 512-byte block within the Chain. */ - silly = MAX_LOOPS; + silly = MAX_LOOPS; while (thisEUN < inftl->nb_blocks) { for (block = 0; block < inftl->EraseSize/SECTORSIZE; block ++) { if ((BlockMap[block] != 0xffff) || BlockDeleted[block]) continue; - if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) - + (block * SECTORSIZE), 16 , &retlen, - (char *)&oob) < 0) + if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) + + (block * SECTORSIZE), 16, &retlen, + (char *)&oob) < 0) status = SECTOR_IGNORE; else - status = oob.b.Status | oob.b.Status1; + status = oob.b.Status | oob.b.Status1; switch(status) { case SECTOR_FREE: @@ -282,29 +345,31 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned continue; } - /* + /* * Copy only in non free block (free blocks can only * happen in case of media errors or deleted blocks). */ - if (BlockMap[block] == BLOCK_NIL) - continue; - - ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize * - BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE, - &retlen, movebuf); - if (ret < 0) { - ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize * - BlockMap[block]) + (block * SECTORSIZE), - SECTORSIZE, &retlen, movebuf); + if (BlockMap[block] == BLOCK_NIL) + continue; + + ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) + + (block * SECTORSIZE), SECTORSIZE, &retlen, + movebuf); + if (ret < 0 && ret != -EUCLEAN) { + ret = mtd->read(mtd, + (inftl->EraseSize * BlockMap[block]) + + (block * SECTORSIZE), SECTORSIZE, + &retlen, movebuf); if (ret != -EIO) - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went " - "away on retry?\n"); - } - memset(&oob, 0xff, sizeof(struct inftl_oob)); - oob.b.Status = oob.b.Status1 = SECTOR_USED; - MTD_WRITEECC(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) + - (block * SECTORSIZE), SECTORSIZE, &retlen, - movebuf, (char *)&oob, &inftl->oobinfo); + DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went " + "away on retry?\n"); + } + memset(&oob, 0xff, sizeof(struct inftl_oob)); + oob.b.Status = oob.b.Status1 = SECTOR_USED; + + inftl_write(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) + + (block * SECTORSIZE), SECTORSIZE, &retlen, + movebuf, (char *)&oob); } /* @@ -329,17 +394,17 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned if (thisEUN == targetEUN) break; - if (INFTL_formatblock(inftl, thisEUN) < 0) { + if (INFTL_formatblock(inftl, thisEUN) < 0) { /* * Could not erase : mark block as reserved. */ inftl->PUtable[thisEUN] = BLOCK_RESERVED; - } else { + } else { /* Correctly erased : mark it as free */ inftl->PUtable[thisEUN] = BLOCK_FREE; inftl->PUtable[prevEUN] = BLOCK_NIL; inftl->numfreeEUNs++; - } + } } return targetEUN; @@ -415,6 +480,7 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) unsigned int thisVUC = block / (inftl->EraseSize / SECTORSIZE); unsigned int thisEUN, writeEUN, prev_block, status; unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize -1); + struct mtd_info *mtd = inftl->mbd.mtd; struct inftl_oob oob; struct inftl_bci bci; unsigned char anac, nacs, parity; @@ -434,10 +500,10 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) silly = MAX_LOOPS; while (thisEUN <= inftl->lastEUN) { - MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) + - blockofs, 8, &retlen, (char *)&bci); + inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) + + blockofs, 8, &retlen, (char *)&bci); - status = bci.Status | bci.Status1; + status = bci.Status | bci.Status1; DEBUG(MTD_DEBUG_LEVEL3, "INFTL: status of block %d in " "EUN %d is %x\n", block , writeEUN, status); @@ -522,8 +588,8 @@ hitused: nacs = 0; thisEUN = inftl->VUtable[thisVUC]; if (thisEUN != BLOCK_NIL) { - MTD_READOOB(inftl->mbd.mtd, thisEUN * inftl->EraseSize - + 8, 8, &retlen, (char *)&oob.u); + inftl_read_oob(mtd, thisEUN * inftl->EraseSize + + 8, 8, &retlen, (char *)&oob.u); anac = oob.u.a.ANAC + 1; nacs = oob.u.a.NACs + 1; } @@ -544,8 +610,8 @@ hitused: oob.u.a.parityPerField = parity; oob.u.a.discarded = 0xaa; - MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize + 8, 8, - &retlen, (char *)&oob.u); + inftl_write_oob(mtd, writeEUN * inftl->EraseSize + 8, 8, + &retlen, (char *)&oob.u); /* Also back up header... */ oob.u.b.virtualUnitNo = cpu_to_le16(thisVUC); @@ -555,8 +621,8 @@ hitused: oob.u.b.parityPerField = parity; oob.u.b.discarded = 0xaa; - MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize + - SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u); + inftl_write_oob(mtd, writeEUN * inftl->EraseSize + + SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u); inftl->PUtable[writeEUN] = inftl->VUtable[thisVUC]; inftl->VUtable[thisVUC] = writeEUN; @@ -576,6 +642,7 @@ hitused: */ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) { + struct mtd_info *mtd = inftl->mbd.mtd; unsigned char BlockUsed[MAX_SECTORS_PER_UNIT]; unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT]; unsigned int thisEUN, status; @@ -606,9 +673,9 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) if (BlockUsed[block] || BlockDeleted[block]) continue; - if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) - + (block * SECTORSIZE), 8 , &retlen, - (char *)&bci) < 0) + if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) + + (block * SECTORSIZE), 8 , &retlen, + (char *)&bci) < 0) status = SECTOR_IGNORE; else status = bci.Status | bci.Status1; @@ -670,12 +737,12 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) DEBUG(MTD_DEBUG_LEVEL3, "Deleting EUN %d from VUC %d\n", thisEUN, thisVUC); - if (INFTL_formatblock(inftl, thisEUN) < 0) { + if (INFTL_formatblock(inftl, thisEUN) < 0) { /* * Could not erase : mark block as reserved. */ inftl->PUtable[thisEUN] = BLOCK_RESERVED; - } else { + } else { /* Correctly erased : mark it as free */ inftl->PUtable[thisEUN] = BLOCK_FREE; inftl->numfreeEUNs++; @@ -697,6 +764,7 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block) { unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)]; unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1); + struct mtd_info *mtd = inftl->mbd.mtd; unsigned int status; int silly = MAX_LOOPS; size_t retlen; @@ -706,8 +774,8 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block) "block=%d)\n", inftl, block); while (thisEUN < inftl->nb_blocks) { - if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) + - blockofs, 8, &retlen, (char *)&bci) < 0) + if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) + + blockofs, 8, &retlen, (char *)&bci) < 0) status = SECTOR_IGNORE; else status = bci.Status | bci.Status1; @@ -741,10 +809,10 @@ foundit: if (thisEUN != BLOCK_NIL) { loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs; - if (MTD_READOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0) + if (inftl_read_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0) return -EIO; bci.Status = bci.Status1 = SECTOR_DELETED; - if (MTD_WRITEOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0) + if (inftl_write_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0) return -EIO; INFTL_trydeletechain(inftl, block / (inftl->EraseSize / SECTORSIZE)); } @@ -784,9 +852,10 @@ static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block, memset(&oob, 0xff, sizeof(struct inftl_oob)); oob.b.Status = oob.b.Status1 = SECTOR_USED; - MTD_WRITEECC(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) + - blockofs, SECTORSIZE, &retlen, (char *)buffer, - (char *)&oob, &inftl->oobinfo); + + inftl_write(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) + + blockofs, SECTORSIZE, &retlen, (char *)buffer, + (char *)&oob); /* * need to write SECTOR_USED flags since they are not written * in mtd_writeecc @@ -804,17 +873,18 @@ static int inftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, struct INFTLrecord *inftl = (void *)mbd; unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)]; unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1); - unsigned int status; + struct mtd_info *mtd = inftl->mbd.mtd; + unsigned int status; int silly = MAX_LOOPS; - struct inftl_bci bci; + struct inftl_bci bci; size_t retlen; DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=%p,block=%ld," "buffer=%p)\n", inftl, block, buffer); while (thisEUN < inftl->nb_blocks) { - if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) + - blockofs, 8, &retlen, (char *)&bci) < 0) + if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) + + blockofs, 8, &retlen, (char *)&bci) < 0) status = SECTOR_IGNORE; else status = bci.Status | bci.Status1; @@ -850,10 +920,12 @@ foundit: /* The requested block is not on the media, return all 0x00 */ memset(buffer, 0, SECTORSIZE); } else { - size_t retlen; + size_t retlen; loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs; - if (MTD_READ(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen, - buffer)) + int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer); + + /* Handle corrected bit flips gracefully */ + if (ret < 0 && ret != -EUCLEAN) return -EIO; } return 0; diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index 43fdc9433882..8f6006f1a519 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -43,6 +43,11 @@ char inftlmountrev[]="$Revision: 1.18 $"; +extern int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf); +extern int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf); + /* * find_boot_record: Find the INFTL Media Header and its Spare copy which * contains the various device information of the INFTL partition and @@ -57,6 +62,7 @@ static int find_boot_record(struct INFTLrecord *inftl) unsigned int i, block; u8 buf[SECTORSIZE]; struct INFTLMediaHeader *mh = &inftl->MediaHdr; + struct mtd_info *mtd = inftl->mbd.mtd; struct INFTLPartition *ip; size_t retlen; @@ -80,8 +86,8 @@ static int find_boot_record(struct INFTLrecord *inftl) * Check for BNAND header first. Then whinge if it's found * but later checks fail. */ - ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize, - SECTORSIZE, &retlen, buf); + ret = mtd->read(mtd, block * inftl->EraseSize, + SECTORSIZE, &retlen, buf); /* We ignore ret in case the ECC of the MediaHeader is invalid (which is apparently acceptable) */ if (retlen != SECTORSIZE) { @@ -106,8 +112,9 @@ static int find_boot_record(struct INFTLrecord *inftl) } /* To be safer with BIOS, also use erase mark as discriminant */ - if ((ret = MTD_READOOB(inftl->mbd.mtd, block * inftl->EraseSize + - SECTORSIZE + 8, 8, &retlen, (char *)&h1) < 0)) { + if ((ret = inftl_read_oob(mtd, block * inftl->EraseSize + + SECTORSIZE + 8, 8, &retlen, + (char *)&h1) < 0)) { printk(KERN_WARNING "INFTL: ANAND header found at " "0x%x in mtd%d, but OOB data read failed " "(err %d)\n", block * inftl->EraseSize, @@ -123,8 +130,8 @@ static int find_boot_record(struct INFTLrecord *inftl) memcpy(mh, buf, sizeof(struct INFTLMediaHeader)); /* Read the spare media header at offset 4096 */ - MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize + 4096, - SECTORSIZE, &retlen, buf); + mtd->read(mtd, block * inftl->EraseSize + 4096, + SECTORSIZE, &retlen, buf); if (retlen != SECTORSIZE) { printk(KERN_WARNING "INFTL: Unable to read spare " "Media Header\n"); @@ -233,7 +240,7 @@ static int find_boot_record(struct INFTLrecord *inftl) */ instr->addr = ip->Reserved0 * inftl->EraseSize; instr->len = inftl->EraseSize; - MTD_ERASE(inftl->mbd.mtd, instr); + mtd->erase(mtd, instr); } if ((ip->lastUnit - ip->firstUnit + 1) < ip->virtualUnits) { printk(KERN_WARNING "INFTL: Media Header " @@ -350,21 +357,21 @@ static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address, int len, int check_oob) { u8 buf[SECTORSIZE + inftl->mbd.mtd->oobsize]; + struct mtd_info *mtd = inftl->mbd.mtd; size_t retlen; int i; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: check_free_sectors(inftl=%p," - "address=0x%x,len=%d,check_oob=%d)\n", inftl, - address, len, check_oob); - for (i = 0; i < len; i += SECTORSIZE) { - if (MTD_READECC(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &inftl->oobinfo) < 0) + if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf)) return -1; if (memcmpb(buf, 0xff, SECTORSIZE) != 0) return -1; if (check_oob) { - if (memcmpb(buf + SECTORSIZE, 0xff, inftl->mbd.mtd->oobsize) != 0) + if(inftl_read_oob(mtd, address, mtd->oobsize, + &retlen, &buf[SECTORSIZE]) < 0) + return -1; + if (memcmpb(buf + SECTORSIZE, 0xff, mtd->oobsize) != 0) return -1; } address += SECTORSIZE; @@ -387,6 +394,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) size_t retlen; struct inftl_unittail uci; struct erase_info *instr = &inftl->instr; + struct mtd_info *mtd = inftl->mbd.mtd; int physblock; DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=%p," @@ -404,8 +412,9 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) /* Erase one physical eraseblock at a time, even though the NAND api allows us to group them. This way we if we have a failure, we can mark only the failed block in the bbt. */ - for (physblock = 0; physblock < inftl->EraseSize; physblock += instr->len, instr->addr += instr->len) { - MTD_ERASE(inftl->mbd.mtd, instr); + for (physblock = 0; physblock < inftl->EraseSize; + physblock += instr->len, instr->addr += instr->len) { + mtd->erase(inftl->mbd.mtd, instr); if (instr->state == MTD_ERASE_FAILED) { printk(KERN_WARNING "INFTL: error while formatting block %d\n", @@ -414,10 +423,10 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) } /* - * Check the "freeness" of Erase Unit before updating metadata. - * FixMe: is this check really necessary? Since we have check the - * return code after the erase operation. - */ + * Check the "freeness" of Erase Unit before updating metadata. + * FixMe: is this check really necessary? Since we have check + * the return code after the erase operation. + */ if (check_free_sectors(inftl, instr->addr, instr->len, 1) != 0) goto fail; } @@ -429,8 +438,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) uci.Reserved[2] = 0; uci.Reserved[3] = 0; instr->addr = block * inftl->EraseSize + SECTORSIZE * 2; - if (MTD_WRITEOOB(inftl->mbd.mtd, instr->addr + - 8, 8, &retlen, (char *)&uci) < 0) + if (inftl_write_oob(mtd, instr->addr + 8, 8, &retlen, (char *)&uci) < 0) goto fail; return 0; fail: @@ -549,6 +557,7 @@ void INFTL_dumpVUchains(struct INFTLrecord *s) int INFTL_mount(struct INFTLrecord *s) { + struct mtd_info *mtd = s->mbd.mtd; unsigned int block, first_block, prev_block, last_block; unsigned int first_logical_block, logical_block, erase_mark; int chain_length, do_format_chain; @@ -607,10 +616,11 @@ int INFTL_mount(struct INFTLrecord *s) break; } - if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8, - 8, &retlen, (char *)&h0) < 0 || - MTD_READOOB(s->mbd.mtd, block * s->EraseSize + - 2 * SECTORSIZE + 8, 8, &retlen, (char *)&h1) < 0) { + if (inftl_read_oob(mtd, block * s->EraseSize + 8, + 8, &retlen, (char *)&h0) < 0 || + inftl_read_oob(mtd, block * s->EraseSize + + 2 * SECTORSIZE + 8, 8, &retlen, + (char *)&h1) < 0) { /* Should never happen? */ do_format_chain++; break; diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 7abd7fee0dda..6bdaacc6d6f9 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -37,7 +37,7 @@ config MTD_PHYSMAP_START config MTD_PHYSMAP_LEN hex "Physical length of flash mapping" depends on MTD_PHYSMAP - default "0x4000000" + default "0" help This is the total length of the mapping of the flash chips on your particular board. If there is space, or aliases, in the @@ -78,7 +78,7 @@ config MTD_PNC2000 config MTD_SC520CDP tristate "CFI Flash device mapped on AMD SC520 CDP" - depends on X86 && MTD_CFI + depends on X86 && MTD_CFI && MTD_CONCAT help The SC520 CDP board has two banks of CFI-compliant chips and one Dual-in-line JEDEC chip. This 'mapping' driver supports that @@ -109,7 +109,7 @@ config MTD_TS5500 mtd1 allows you to reprogram your BIOS. BE VERY CAREFUL. Note that jumper 3 ("Write Enable Drive A") must be set - otherwise detection won't succeeed. + otherwise detection won't succeed. config MTD_SBC_GXX tristate "CFI Flash device mapped on Arcom SBC-GXx boards" @@ -200,8 +200,8 @@ config MTD_TSUNAMI Support for the flash chip on Tsunami TIG bus. config MTD_LASAT - tristate "Flash chips on LASAT board" - depends on LASAT + tristate "LASAT flash device" + depends on LASAT && MTD_CFI help Support for the flash chips on the Lasat 100 and 200 boards. @@ -561,7 +561,6 @@ config MTD_PCMCIA config MTD_PCMCIA_ANONYMOUS bool "Use PCMCIA MTD drivers for anonymous PCMCIA cards" depends on MTD_PCMCIA - default N help If this option is enabled, PCMCIA cards which do not report anything about themselves are assumed to be MTD cards. diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c index fd0f0d3187de..92b5d883d7b0 100644 --- a/drivers/mtd/maps/cfi_flagadm.c +++ b/drivers/mtd/maps/cfi_flagadm.c @@ -1,5 +1,5 @@ /* - * Copyright © 2001 Flaga hf. Medical Devices, Kári Davíðsson <kd@flaga.is> + * Copyright © 2001 Flaga hf. Medical Devices, Kári DavÃðsson <kd@flaga.is> * * $Id: cfi_flagadm.c,v 1.15 2005/11/07 11:14:26 gleixner Exp $ * @@ -135,5 +135,5 @@ module_exit(cleanup_flagadm); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>"); +MODULE_AUTHOR("Kári DavÃðsson <kd@flaga.is>"); MODULE_DESCRIPTION("MTD map driver for Flaga digital module"); diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c index 652813cd6c2d..85c2a9e22b1e 100644 --- a/drivers/mtd/maps/dbox2-flash.c +++ b/drivers/mtd/maps/dbox2-flash.c @@ -122,5 +122,5 @@ module_exit(cleanup_dbox2_flash); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); +MODULE_AUTHOR("Kári DavÃðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); diff --git a/drivers/mtd/maps/mtx-1_flash.c b/drivers/mtd/maps/mtx-1_flash.c index d1e66e186746..5c25d4e552c6 100644 --- a/drivers/mtd/maps/mtx-1_flash.c +++ b/drivers/mtd/maps/mtx-1_flash.c @@ -4,7 +4,7 @@ * $Id: mtx-1_flash.c,v 1.2 2005/11/07 11:14:27 gleixner Exp $ * * (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz> - * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de> + * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de> * */ diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c index 54a3102ab19a..0994b5b2e331 100644 --- a/drivers/mtd/maps/nettel.c +++ b/drivers/mtd/maps/nettel.c @@ -20,6 +20,8 @@ #include <linux/mtd/partitions.h> #include <linux/mtd/cfi.h> #include <linux/reboot.h> +#include <linux/kdev_t.h> +#include <linux/root_dev.h> #include <asm/io.h> /****************************************************************************/ @@ -188,7 +190,7 @@ int nettel_eraseconfig(void) set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&wait_q, &wait); - ret = MTD_ERASE(mtd, &nettel_erase); + ret = mtd->erase(mtd, &nettel_erase); if (ret) { set_current_state(TASK_RUNNING); remove_wait_queue(&wait_q, &wait); diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index d27f4129afd3..c861134cbc48 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -713,6 +713,7 @@ static void pcmciamtd_detach(struct pcmcia_device *link) if(dev->mtd_info) { del_mtd_device(dev->mtd_info); + map_destroy(dev->mtd_info); info("mtd%d: Removed", dev->mtd_info->index); } diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index f49ebc3c4606..433c3cac3ca9 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -14,112 +14,229 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/device.h> +#include <linux/platform_device.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/config.h> #include <linux/mtd/partitions.h> #include <linux/mtd/physmap.h> +#include <asm/io.h> -static struct mtd_info *mymtd; - -struct map_info physmap_map = { - .name = "phys_mapped_flash", - .phys = CONFIG_MTD_PHYSMAP_START, - .size = CONFIG_MTD_PHYSMAP_LEN, - .bankwidth = CONFIG_MTD_PHYSMAP_BANKWIDTH, +struct physmap_flash_info { + struct mtd_info *mtd; + struct map_info map; + struct resource *res; +#ifdef CONFIG_MTD_PARTITIONS + int nr_parts; + struct mtd_partition *parts; +#endif }; + +static int physmap_flash_remove(struct platform_device *dev) +{ + struct physmap_flash_info *info; + struct physmap_flash_data *physmap_data; + + info = platform_get_drvdata(dev); + if (info == NULL) + return 0; + platform_set_drvdata(dev, NULL); + + physmap_data = dev->dev.platform_data; + + if (info->mtd != NULL) { #ifdef CONFIG_MTD_PARTITIONS -static struct mtd_partition *mtd_parts; -static int mtd_parts_nb; + if (info->nr_parts) { + del_mtd_partitions(info->mtd); + kfree(info->parts); + } else if (physmap_data->nr_parts) { + del_mtd_partitions(info->mtd); + } else { + del_mtd_device(info->mtd); + } +#else + del_mtd_device(info->mtd); +#endif + map_destroy(info->mtd); + } -static int num_physmap_partitions; -static struct mtd_partition *physmap_partitions; + if (info->map.virt != NULL) + iounmap((void *)info->map.virt); -static const char *part_probes[] __initdata = {"cmdlinepart", "RedBoot", NULL}; + if (info->res != NULL) { + release_resource(info->res); + kfree(info->res); + } -void physmap_set_partitions(struct mtd_partition *parts, int num_parts) -{ - physmap_partitions=parts; - num_physmap_partitions=num_parts; + return 0; } -#endif /* CONFIG_MTD_PARTITIONS */ -static int __init init_physmap(void) +static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL }; +#ifdef CONFIG_MTD_PARTITIONS +static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; +#endif + +static int physmap_flash_probe(struct platform_device *dev) { - static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL }; - const char **type; + struct physmap_flash_data *physmap_data; + struct physmap_flash_info *info; + const char **probe_type; + int err; + + physmap_data = dev->dev.platform_data; + if (physmap_data == NULL) + return -ENODEV; + + printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n", + (unsigned long long)dev->resource->end - dev->resource->start + 1, + (unsigned long long)dev->resource->start); + + info = kmalloc(sizeof(struct physmap_flash_info), GFP_KERNEL); + if (info == NULL) { + err = -ENOMEM; + goto err_out; + } + memset(info, 0, sizeof(*info)); - printk(KERN_NOTICE "physmap flash device: %lx at %lx\n", physmap_map.size, physmap_map.phys); - physmap_map.virt = ioremap(physmap_map.phys, physmap_map.size); + platform_set_drvdata(dev, info); - if (!physmap_map.virt) { - printk("Failed to ioremap\n"); - return -EIO; + info->res = request_mem_region(dev->resource->start, + dev->resource->end - dev->resource->start + 1, + dev->dev.bus_id); + if (info->res == NULL) { + dev_err(&dev->dev, "Could not reserve memory region\n"); + err = -ENOMEM; + goto err_out; } - simple_map_init(&physmap_map); + info->map.name = dev->dev.bus_id; + info->map.phys = dev->resource->start; + info->map.size = dev->resource->end - dev->resource->start + 1; + info->map.bankwidth = physmap_data->width; + info->map.set_vpp = physmap_data->set_vpp; + + info->map.virt = ioremap(info->map.phys, info->map.size); + if (info->map.virt == NULL) { + dev_err(&dev->dev, "Failed to ioremap flash region\n"); + err = EIO; + goto err_out; + } - mymtd = NULL; - type = rom_probe_types; - for(; !mymtd && *type; type++) { - mymtd = do_map_probe(*type, &physmap_map); + simple_map_init(&info->map); + + probe_type = rom_probe_types; + for (; info->mtd == NULL && *probe_type != NULL; probe_type++) + info->mtd = do_map_probe(*probe_type, &info->map); + if (info->mtd == NULL) { + dev_err(&dev->dev, "map_probe failed\n"); + err = -ENXIO; + goto err_out; } - if (mymtd) { - mymtd->owner = THIS_MODULE; + info->mtd->owner = THIS_MODULE; #ifdef CONFIG_MTD_PARTITIONS - mtd_parts_nb = parse_mtd_partitions(mymtd, part_probes, - &mtd_parts, 0); + err = parse_mtd_partitions(info->mtd, part_probe_types, &info->parts, 0); + if (err > 0) { + add_mtd_partitions(info->mtd, info->parts, err); + return 0; + } - if (mtd_parts_nb > 0) - { - add_mtd_partitions (mymtd, mtd_parts, mtd_parts_nb); - return 0; - } + if (physmap_data->nr_parts) { + printk(KERN_NOTICE "Using physmap partition information\n"); + add_mtd_partitions(info->mtd, physmap_data->parts, + physmap_data->nr_parts); + return 0; + } +#endif + + add_mtd_device(info->mtd); + return 0; + +err_out: + physmap_flash_remove(dev); + return err; +} + +static struct platform_driver physmap_flash_driver = { + .probe = physmap_flash_probe, + .remove = physmap_flash_remove, + .driver = { + .name = "physmap-flash", + }, +}; - if (num_physmap_partitions != 0) - { - printk(KERN_NOTICE - "Using physmap partition definition\n"); - add_mtd_partitions (mymtd, physmap_partitions, num_physmap_partitions); - return 0; - } +#ifdef CONFIG_MTD_PHYSMAP_LEN +#if CONFIG_MTD_PHYSMAP_LEN != 0 +#warning using PHYSMAP compat code +#define PHYSMAP_COMPAT +#endif #endif - add_mtd_device(mymtd); - return 0; - } +#ifdef PHYSMAP_COMPAT +static struct physmap_flash_data physmap_flash_data = { + .width = CONFIG_MTD_PHYSMAP_BANKWIDTH, +}; - iounmap(physmap_map.virt); - return -ENXIO; -} +static struct resource physmap_flash_resource = { + .start = CONFIG_MTD_PHYSMAP_START, + .end = CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN, + .flags = IORESOURCE_MEM, +}; -static void __exit cleanup_physmap(void) +static struct platform_device physmap_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &physmap_flash_data, + }, + .num_resources = 1, + .resource = &physmap_flash_resource, +}; + +void physmap_configure(unsigned long addr, unsigned long size, + int bankwidth, void (*set_vpp)(struct map_info *, int)) { + physmap_flash_resource.start = addr; + physmap_flash_resource.end = addr + size - 1; + physmap_flash_data.width = bankwidth; + physmap_flash_data.set_vpp = set_vpp; +} + #ifdef CONFIG_MTD_PARTITIONS - if (mtd_parts_nb) { - del_mtd_partitions(mymtd); - kfree(mtd_parts); - } else if (num_physmap_partitions) { - del_mtd_partitions(mymtd); - } else { - del_mtd_device(mymtd); - } -#else - del_mtd_device(mymtd); +void physmap_set_partitions(struct mtd_partition *parts, int num_parts) +{ + physmap_flash_data.nr_parts = num_parts; + physmap_flash_data.parts = parts; +} +#endif #endif - map_destroy(mymtd); - iounmap(physmap_map.virt); - physmap_map.virt = NULL; +static int __init physmap_init(void) +{ + int err; + + err = platform_driver_register(&physmap_flash_driver); +#ifdef PHYSMAP_COMPAT + if (err == 0) + platform_device_register(&physmap_flash); +#endif + + return err; } -module_init(init_physmap); -module_exit(cleanup_physmap); +static void __exit physmap_exit(void) +{ +#ifdef PHYSMAP_COMPAT + platform_device_unregister(&physmap_flash); +#endif + platform_driver_unregister(&physmap_flash_driver); +} +module_init(physmap_init); +module_exit(physmap_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 2cef280e388c..e5c78463ebfd 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -71,7 +71,7 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos, set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&wait_q, &wait); - ret = MTD_ERASE(mtd, &erase); + ret = mtd->erase(mtd, &erase); if (ret) { set_current_state(TASK_RUNNING); remove_wait_queue(&wait_q, &wait); @@ -88,7 +88,7 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos, * Next, writhe data to flash. */ - ret = MTD_WRITE (mtd, pos, len, &retlen, buf); + ret = mtd->write(mtd, pos, len, &retlen, buf); if (ret) return ret; if (retlen != len) @@ -138,7 +138,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos, mtd->name, pos, len); if (!sect_size) - return MTD_WRITE (mtd, pos, len, &retlen, buf); + return mtd->write(mtd, pos, len, &retlen, buf); while (len > 0) { unsigned long sect_start = (pos/sect_size)*sect_size; @@ -170,7 +170,8 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos, mtdblk->cache_offset != sect_start) { /* fill the cache with the current sector */ mtdblk->cache_state = STATE_EMPTY; - ret = MTD_READ(mtd, sect_start, sect_size, &retlen, mtdblk->cache_data); + ret = mtd->read(mtd, sect_start, sect_size, + &retlen, mtdblk->cache_data); if (ret) return ret; if (retlen != sect_size) @@ -207,7 +208,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos, mtd->name, pos, len); if (!sect_size) - return MTD_READ (mtd, pos, len, &retlen, buf); + return mtd->read(mtd, pos, len, &retlen, buf); while (len > 0) { unsigned long sect_start = (pos/sect_size)*sect_size; @@ -226,7 +227,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos, mtdblk->cache_offset == sect_start) { memcpy (buf, mtdblk->cache_data + offset, size); } else { - ret = MTD_READ (mtd, pos, size, &retlen, buf); + ret = mtd->read(mtd, pos, size, &retlen, buf); if (ret) return ret; if (retlen != size) @@ -288,8 +289,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd) mutex_init(&mtdblk->cache_mutex); mtdblk->cache_state = STATE_EMPTY; - if ((mtdblk->mtd->flags & MTD_CAP_RAM) != MTD_CAP_RAM && - mtdblk->mtd->erasesize) { + if ( !(mtdblk->mtd->flags & MTD_NO_ERASE) && mtdblk->mtd->erasesize) { mtdblk->cache_size = mtdblk->mtd->erasesize; mtdblk->cache_data = NULL; } diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c index 0c830ba41ef0..29563ed258a4 100644 --- a/drivers/mtd/mtdblock_ro.c +++ b/drivers/mtd/mtdblock_ro.c @@ -45,9 +45,7 @@ static void mtdblock_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) dev->blksize = 512; dev->size = mtd->size >> 9; dev->tr = tr; - if ((mtd->flags & (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) != - (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) - dev->readonly = 1; + dev->readonly = 1; add_mtd_blktrans_dev(dev); } diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 6f044584bdc6..aa18d45b264b 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -49,24 +49,18 @@ static struct mtd_notifier notifier = { }; /* - * We use file->private_data to store a pointer to the MTDdevice. - * Since alighment is at least 32 bits, we have 2 bits free for OTP - * modes as well. + * Data structure to hold the pointer to the mtd device as well + * as mode information ofr various use cases. */ - -#define TO_MTD(file) (struct mtd_info *)((long)((file)->private_data) & ~3L) - -#define MTD_MODE_OTP_FACT 1 -#define MTD_MODE_OTP_USER 2 -#define MTD_MODE(file) ((long)((file)->private_data) & 3) - -#define SET_MTD_MODE(file, mode) \ - do { long __p = (long)((file)->private_data); \ - (file)->private_data = (void *)((__p & ~3L) | mode); } while (0) +struct mtd_file_info { + struct mtd_info *mtd; + enum mtd_file_modes mode; +}; static loff_t mtd_lseek (struct file *file, loff_t offset, int orig) { - struct mtd_info *mtd = TO_MTD(file); + struct mtd_file_info *mfi = file->private_data; + struct mtd_info *mtd = mfi->mtd; switch (orig) { case 0: @@ -97,6 +91,7 @@ static int mtd_open(struct inode *inode, struct file *file) int minor = iminor(inode); int devnum = minor >> 1; struct mtd_info *mtd; + struct mtd_file_info *mfi; DEBUG(MTD_DEBUG_LEVEL0, "MTD_open\n"); @@ -117,14 +112,20 @@ static int mtd_open(struct inode *inode, struct file *file) return -ENODEV; } - file->private_data = mtd; - /* You can't open it RW if it's not a writeable device */ if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) { put_mtd_device(mtd); return -EACCES; } + mfi = kzalloc(sizeof(*mfi), GFP_KERNEL); + if (!mfi) { + put_mtd_device(mtd); + return -ENOMEM; + } + mfi->mtd = mtd; + file->private_data = mfi; + return 0; } /* mtd_open */ @@ -132,16 +133,17 @@ static int mtd_open(struct inode *inode, struct file *file) static int mtd_close(struct inode *inode, struct file *file) { - struct mtd_info *mtd; + struct mtd_file_info *mfi = file->private_data; + struct mtd_info *mtd = mfi->mtd; DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n"); - mtd = TO_MTD(file); - if (mtd->sync) mtd->sync(mtd); put_mtd_device(mtd); + file->private_data = NULL; + kfree(mfi); return 0; } /* mtd_close */ @@ -153,7 +155,8 @@ static int mtd_close(struct inode *inode, struct file *file) static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t *ppos) { - struct mtd_info *mtd = TO_MTD(file); + struct mtd_file_info *mfi = file->private_data; + struct mtd_info *mtd = mfi->mtd; size_t retlen=0; size_t total_retlen=0; int ret=0; @@ -170,36 +173,58 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t /* FIXME: Use kiovec in 2.5 to lock down the user's buffers and pass them directly to the MTD functions */ + + if (count > MAX_KMALLOC_SIZE) + kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL); + else + kbuf=kmalloc(count, GFP_KERNEL); + + if (!kbuf) + return -ENOMEM; + while (count) { + if (count > MAX_KMALLOC_SIZE) len = MAX_KMALLOC_SIZE; else len = count; - kbuf=kmalloc(len,GFP_KERNEL); - if (!kbuf) - return -ENOMEM; - - switch (MTD_MODE(file)) { - case MTD_MODE_OTP_FACT: + switch (mfi->mode) { + case MTD_MODE_OTP_FACTORY: ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; case MTD_MODE_OTP_USER: ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; + case MTD_MODE_RAW: + { + struct mtd_oob_ops ops; + + ops.mode = MTD_OOB_RAW; + ops.datbuf = kbuf; + ops.oobbuf = NULL; + ops.len = len; + + ret = mtd->read_oob(mtd, *ppos, &ops); + retlen = ops.retlen; + break; + } default: - ret = MTD_READ(mtd, *ppos, len, &retlen, kbuf); + ret = mtd->read(mtd, *ppos, len, &retlen, kbuf); } /* Nand returns -EBADMSG on ecc errors, but it returns * the data. For our userspace tools it is important * to dump areas with ecc errors ! + * For kernel internal usage it also might return -EUCLEAN + * to signal the caller that a bitflip has occured and has + * been corrected by the ECC algorithm. * Userspace software which accesses NAND this way * must be aware of the fact that it deals with NAND */ - if (!ret || (ret == -EBADMSG)) { + if (!ret || (ret == -EUCLEAN) || (ret == -EBADMSG)) { *ppos += retlen; if (copy_to_user(buf, kbuf, retlen)) { - kfree(kbuf); + kfree(kbuf); return -EFAULT; } else @@ -215,15 +240,16 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t return ret; } - kfree(kbuf); } + kfree(kbuf); return total_retlen; } /* mtd_read */ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count,loff_t *ppos) { - struct mtd_info *mtd = TO_MTD(file); + struct mtd_file_info *mfi = file->private_data; + struct mtd_info *mtd = mfi->mtd; char *kbuf; size_t retlen; size_t total_retlen=0; @@ -241,25 +267,28 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count if (!count) return 0; + if (count > MAX_KMALLOC_SIZE) + kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL); + else + kbuf=kmalloc(count, GFP_KERNEL); + + if (!kbuf) + return -ENOMEM; + while (count) { + if (count > MAX_KMALLOC_SIZE) len = MAX_KMALLOC_SIZE; else len = count; - kbuf=kmalloc(len,GFP_KERNEL); - if (!kbuf) { - printk("kmalloc is null\n"); - return -ENOMEM; - } - if (copy_from_user(kbuf, buf, len)) { kfree(kbuf); return -EFAULT; } - switch (MTD_MODE(file)) { - case MTD_MODE_OTP_FACT: + switch (mfi->mode) { + case MTD_MODE_OTP_FACTORY: ret = -EROFS; break; case MTD_MODE_OTP_USER: @@ -269,6 +298,21 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count } ret = mtd->write_user_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; + + case MTD_MODE_RAW: + { + struct mtd_oob_ops ops; + + ops.mode = MTD_OOB_RAW; + ops.datbuf = kbuf; + ops.oobbuf = NULL; + ops.len = len; + + ret = mtd->write_oob(mtd, *ppos, &ops); + retlen = ops.retlen; + break; + } + default: ret = (*(mtd->write))(mtd, *ppos, len, &retlen, kbuf); } @@ -282,10 +326,9 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count kfree(kbuf); return ret; } - - kfree(kbuf); } + kfree(kbuf); return total_retlen; } /* mtd_write */ @@ -299,13 +342,45 @@ static void mtdchar_erase_callback (struct erase_info *instr) wake_up((wait_queue_head_t *)instr->priv); } +#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP) +static int otp_select_filemode(struct mtd_file_info *mfi, int mode) +{ + struct mtd_info *mtd = mfi->mtd; + int ret = 0; + + switch (mode) { + case MTD_OTP_FACTORY: + if (!mtd->read_fact_prot_reg) + ret = -EOPNOTSUPP; + else + mfi->mode = MTD_MODE_OTP_FACTORY; + break; + case MTD_OTP_USER: + if (!mtd->read_fact_prot_reg) + ret = -EOPNOTSUPP; + else + mfi->mode = MTD_MODE_OTP_USER; + break; + default: + ret = -EINVAL; + case MTD_OTP_OFF: + break; + } + return ret; +} +#else +# define otp_select_filemode(f,m) -EOPNOTSUPP +#endif + static int mtd_ioctl(struct inode *inode, struct file *file, u_int cmd, u_long arg) { - struct mtd_info *mtd = TO_MTD(file); + struct mtd_file_info *mfi = file->private_data; + struct mtd_info *mtd = mfi->mtd; void __user *argp = (void __user *)arg; int ret = 0; u_long size; + struct mtd_info_user info; DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n"); @@ -341,7 +416,15 @@ static int mtd_ioctl(struct inode *inode, struct file *file, } case MEMGETINFO: - if (copy_to_user(argp, mtd, sizeof(struct mtd_info_user))) + info.type = mtd->type; + info.flags = mtd->flags; + info.size = mtd->size; + info.erasesize = mtd->erasesize; + info.writesize = mtd->writesize; + info.oobsize = mtd->oobsize; + info.ecctype = mtd->ecctype; + info.eccsize = mtd->eccsize; + if (copy_to_user(argp, &info, sizeof(struct mtd_info_user))) return -EFAULT; break; @@ -400,8 +483,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, case MEMWRITEOOB: { struct mtd_oob_buf buf; - void *databuf; - ssize_t retlen; + struct mtd_oob_ops ops; if(!(file->f_mode & 2)) return -EPERM; @@ -409,7 +491,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) return -EFAULT; - if (buf.length > 0x4096) + if (buf.length > 4096) return -EINVAL; if (!mtd->write_oob) @@ -421,21 +503,32 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (ret) return ret; - databuf = kmalloc(buf.length, GFP_KERNEL); - if (!databuf) + ops.len = buf.length; + ops.ooblen = buf.length; + ops.ooboffs = buf.start & (mtd->oobsize - 1); + ops.datbuf = NULL; + ops.mode = MTD_OOB_PLACE; + + if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs)) + return -EINVAL; + + ops.oobbuf = kmalloc(buf.length, GFP_KERNEL); + if (!ops.oobbuf) return -ENOMEM; - if (copy_from_user(databuf, buf.ptr, buf.length)) { - kfree(databuf); + if (copy_from_user(ops.oobbuf, buf.ptr, buf.length)) { + kfree(ops.oobbuf); return -EFAULT; } - ret = (mtd->write_oob)(mtd, buf.start, buf.length, &retlen, databuf); + buf.start &= ~(mtd->oobsize - 1); + ret = mtd->write_oob(mtd, buf.start, &ops); - if (copy_to_user(argp + sizeof(uint32_t), &retlen, sizeof(uint32_t))) + if (copy_to_user(argp + sizeof(uint32_t), &ops.retlen, + sizeof(uint32_t))) ret = -EFAULT; - kfree(databuf); + kfree(ops.oobbuf); break; } @@ -443,13 +536,12 @@ static int mtd_ioctl(struct inode *inode, struct file *file, case MEMREADOOB: { struct mtd_oob_buf buf; - void *databuf; - ssize_t retlen; + struct mtd_oob_ops ops; if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf))) return -EFAULT; - if (buf.length > 0x4096) + if (buf.length > 4096) return -EINVAL; if (!mtd->read_oob) @@ -457,22 +549,32 @@ static int mtd_ioctl(struct inode *inode, struct file *file, else ret = access_ok(VERIFY_WRITE, buf.ptr, buf.length) ? 0 : -EFAULT; - if (ret) return ret; - databuf = kmalloc(buf.length, GFP_KERNEL); - if (!databuf) + ops.len = buf.length; + ops.ooblen = buf.length; + ops.ooboffs = buf.start & (mtd->oobsize - 1); + ops.datbuf = NULL; + ops.mode = MTD_OOB_PLACE; + + if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs)) + return -EINVAL; + + ops.oobbuf = kmalloc(buf.length, GFP_KERNEL); + if (!ops.oobbuf) return -ENOMEM; - ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf); + buf.start &= ~(mtd->oobsize - 1); + ret = mtd->read_oob(mtd, buf.start, &ops); - if (put_user(retlen, (uint32_t __user *)argp)) + if (put_user(ops.retlen, (uint32_t __user *)argp)) ret = -EFAULT; - else if (retlen && copy_to_user(buf.ptr, databuf, retlen)) + else if (ops.retlen && copy_to_user(buf.ptr, ops.oobbuf, + ops.retlen)) ret = -EFAULT; - kfree(databuf); + kfree(ops.oobbuf); break; } @@ -504,16 +606,22 @@ static int mtd_ioctl(struct inode *inode, struct file *file, break; } - case MEMSETOOBSEL: - { - if (copy_from_user(&mtd->oobinfo, argp, sizeof(struct nand_oobinfo))) - return -EFAULT; - break; - } - + /* Legacy interface */ case MEMGETOOBSEL: { - if (copy_to_user(argp, &(mtd->oobinfo), sizeof(struct nand_oobinfo))) + struct nand_oobinfo oi; + + if (!mtd->ecclayout) + return -EOPNOTSUPP; + if (mtd->ecclayout->eccbytes > ARRAY_SIZE(oi.eccpos)) + return -EINVAL; + + oi.useecc = MTD_NANDECC_AUTOPLACE; + memcpy(&oi.eccpos, mtd->ecclayout->eccpos, sizeof(oi.eccpos)); + memcpy(&oi.oobfree, mtd->ecclayout->oobfree, + sizeof(oi.oobfree)); + + if (copy_to_user(argp, &oi, sizeof(struct nand_oobinfo))) return -EFAULT; break; } @@ -544,31 +652,17 @@ static int mtd_ioctl(struct inode *inode, struct file *file, break; } -#ifdef CONFIG_MTD_OTP +#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP) case OTPSELECT: { int mode; if (copy_from_user(&mode, argp, sizeof(int))) return -EFAULT; - SET_MTD_MODE(file, 0); - switch (mode) { - case MTD_OTP_FACTORY: - if (!mtd->read_fact_prot_reg) - ret = -EOPNOTSUPP; - else - SET_MTD_MODE(file, MTD_MODE_OTP_FACT); - break; - case MTD_OTP_USER: - if (!mtd->read_fact_prot_reg) - ret = -EOPNOTSUPP; - else - SET_MTD_MODE(file, MTD_MODE_OTP_USER); - break; - default: - ret = -EINVAL; - case MTD_OTP_OFF: - break; - } + + mfi->mode = MTD_MODE_NORMAL; + + ret = otp_select_filemode(mfi, mode); + file->f_pos = 0; break; } @@ -580,8 +674,8 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (!buf) return -ENOMEM; ret = -EOPNOTSUPP; - switch (MTD_MODE(file)) { - case MTD_MODE_OTP_FACT: + switch (mfi->mode) { + case MTD_MODE_OTP_FACTORY: if (mtd->get_fact_prot_info) ret = mtd->get_fact_prot_info(mtd, buf, 4096); break; @@ -589,6 +683,8 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (mtd->get_user_prot_info) ret = mtd->get_user_prot_info(mtd, buf, 4096); break; + default: + break; } if (ret >= 0) { if (cmd == OTPGETREGIONCOUNT) { @@ -607,7 +703,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, { struct otp_info info; - if (MTD_MODE(file) != MTD_MODE_OTP_USER) + if (mfi->mode != MTD_MODE_OTP_USER) return -EINVAL; if (copy_from_user(&info, argp, sizeof(info))) return -EFAULT; @@ -618,6 +714,49 @@ static int mtd_ioctl(struct inode *inode, struct file *file, } #endif + case ECCGETLAYOUT: + { + if (!mtd->ecclayout) + return -EOPNOTSUPP; + + if (copy_to_user(argp, &mtd->ecclayout, + sizeof(struct nand_ecclayout))) + return -EFAULT; + break; + } + + case ECCGETSTATS: + { + if (copy_to_user(argp, &mtd->ecc_stats, + sizeof(struct mtd_ecc_stats))) + return -EFAULT; + break; + } + + case MTDFILEMODE: + { + mfi->mode = 0; + + switch(arg) { + case MTD_MODE_OTP_FACTORY: + case MTD_MODE_OTP_USER: + ret = otp_select_filemode(mfi, arg); + break; + + case MTD_MODE_RAW: + if (!mtd->read_oob || !mtd->write_oob) + return -EOPNOTSUPP; + mfi->mode = arg; + + case MTD_MODE_NORMAL: + break; + default: + ret = -EINVAL; + } + file->f_pos = 0; + break; + } + default: ret = -ENOTTY; } diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 9af840364a74..1fea631b5852 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -19,6 +19,8 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/concat.h> +#include <asm/div64.h> + /* * Our storage structure: * Subdev points to an array of pointers to struct mtd_info objects @@ -54,7 +56,7 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) { struct mtd_concat *concat = CONCAT(mtd); - int err = -EINVAL; + int ret = 0, err; int i; *retlen = 0; @@ -78,19 +80,29 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len, err = subdev->read(subdev, from, size, &retsize, buf); - if (err) - break; + /* Save information about bitflips! */ + if (unlikely(err)) { + if (err == -EBADMSG) { + mtd->ecc_stats.failed++; + ret = err; + } else if (err == -EUCLEAN) { + mtd->ecc_stats.corrected++; + /* Do not overwrite -EBADMSG !! */ + if (!ret) + ret = err; + } else + return err; + } *retlen += retsize; len -= size; if (len == 0) - break; + return ret; - err = -EINVAL; buf += size; from = 0; } - return err; + return -EINVAL; } static int @@ -141,211 +153,185 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len, } static int -concat_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, - size_t * retlen, u_char * buf, u_char * eccbuf, - struct nand_oobinfo *oobsel) +concat_writev(struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t * retlen) { struct mtd_concat *concat = CONCAT(mtd); - int err = -EINVAL; + struct kvec *vecs_copy; + unsigned long entry_low, entry_high; + size_t total_len = 0; int i; + int err = -EINVAL; - *retlen = 0; - - for (i = 0; i < concat->num_subdev; i++) { - struct mtd_info *subdev = concat->subdev[i]; - size_t size, retsize; - - if (from >= subdev->size) { - /* Not destined for this subdev */ - size = 0; - from -= subdev->size; - continue; - } - - if (from + len > subdev->size) - /* First part goes into this subdev */ - size = subdev->size - from; - else - /* Entire transaction goes into this subdev */ - size = len; + if (!(mtd->flags & MTD_WRITEABLE)) + return -EROFS; - if (subdev->read_ecc) - err = subdev->read_ecc(subdev, from, size, - &retsize, buf, eccbuf, oobsel); - else - err = -EINVAL; + *retlen = 0; - if (err) - break; + /* Calculate total length of data */ + for (i = 0; i < count; i++) + total_len += vecs[i].iov_len; - *retlen += retsize; - len -= size; - if (len == 0) - break; + /* Do not allow write past end of device */ + if ((to + total_len) > mtd->size) + return -EINVAL; - err = -EINVAL; - buf += size; - if (eccbuf) { - eccbuf += subdev->oobsize; - /* in nand.c at least, eccbufs are - tagged with 2 (int)eccstatus'; we - must account for these */ - eccbuf += 2 * (sizeof (int)); - } - from = 0; + /* Check alignment */ + if (mtd->writesize > 1) { + loff_t __to = to; + if (do_div(__to, mtd->writesize) || (total_len % mtd->writesize)) + return -EINVAL; } - return err; -} -static int -concat_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, - size_t * retlen, const u_char * buf, u_char * eccbuf, - struct nand_oobinfo *oobsel) -{ - struct mtd_concat *concat = CONCAT(mtd); - int err = -EINVAL; - int i; - - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - - *retlen = 0; + /* make a copy of vecs */ + vecs_copy = kmalloc(sizeof(struct kvec) * count, GFP_KERNEL); + if (!vecs_copy) + return -ENOMEM; + memcpy(vecs_copy, vecs, sizeof(struct kvec) * count); + entry_low = 0; for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; - size_t size, retsize; + size_t size, wsize, retsize, old_iov_len; if (to >= subdev->size) { - size = 0; to -= subdev->size; continue; } - if (to + len > subdev->size) - size = subdev->size - to; - else - size = len; + + size = min(total_len, (size_t)(subdev->size - to)); + wsize = size; /* store for future use */ + + entry_high = entry_low; + while (entry_high < count) { + if (size <= vecs_copy[entry_high].iov_len) + break; + size -= vecs_copy[entry_high++].iov_len; + } + + old_iov_len = vecs_copy[entry_high].iov_len; + vecs_copy[entry_high].iov_len = size; if (!(subdev->flags & MTD_WRITEABLE)) err = -EROFS; - else if (subdev->write_ecc) - err = subdev->write_ecc(subdev, to, size, - &retsize, buf, eccbuf, oobsel); else - err = -EINVAL; + err = subdev->writev(subdev, &vecs_copy[entry_low], + entry_high - entry_low + 1, to, &retsize); + + vecs_copy[entry_high].iov_len = old_iov_len - size; + vecs_copy[entry_high].iov_base += size; + + entry_low = entry_high; if (err) break; *retlen += retsize; - len -= size; - if (len == 0) + total_len -= wsize; + + if (total_len == 0) break; err = -EINVAL; - buf += size; - if (eccbuf) - eccbuf += subdev->oobsize; to = 0; } + + kfree(vecs_copy); return err; } static int -concat_read_oob(struct mtd_info *mtd, loff_t from, size_t len, - size_t * retlen, u_char * buf) +concat_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { struct mtd_concat *concat = CONCAT(mtd); - int err = -EINVAL; - int i; + struct mtd_oob_ops devops = *ops; + int i, err, ret = 0; - *retlen = 0; + ops->retlen = 0; for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; - size_t size, retsize; if (from >= subdev->size) { - /* Not destined for this subdev */ - size = 0; from -= subdev->size; continue; } - if (from + len > subdev->size) - /* First part goes into this subdev */ - size = subdev->size - from; - else - /* Entire transaction goes into this subdev */ - size = len; - if (subdev->read_oob) - err = subdev->read_oob(subdev, from, size, - &retsize, buf); - else - err = -EINVAL; + /* partial read ? */ + if (from + devops.len > subdev->size) + devops.len = subdev->size - from; + + err = subdev->read_oob(subdev, from, &devops); + ops->retlen += devops.retlen; + + /* Save information about bitflips! */ + if (unlikely(err)) { + if (err == -EBADMSG) { + mtd->ecc_stats.failed++; + ret = err; + } else if (err == -EUCLEAN) { + mtd->ecc_stats.corrected++; + /* Do not overwrite -EBADMSG !! */ + if (!ret) + ret = err; + } else + return err; + } - if (err) - break; + devops.len = ops->len - ops->retlen; + if (!devops.len) + return ret; - *retlen += retsize; - len -= size; - if (len == 0) - break; + if (devops.datbuf) + devops.datbuf += devops.retlen; + if (devops.oobbuf) + devops.oobbuf += devops.ooblen; - err = -EINVAL; - buf += size; from = 0; } - return err; + return -EINVAL; } static int -concat_write_oob(struct mtd_info *mtd, loff_t to, size_t len, - size_t * retlen, const u_char * buf) +concat_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) { struct mtd_concat *concat = CONCAT(mtd); - int err = -EINVAL; - int i; + struct mtd_oob_ops devops = *ops; + int i, err; if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; - *retlen = 0; + ops->retlen = 0; for (i = 0; i < concat->num_subdev; i++) { struct mtd_info *subdev = concat->subdev[i]; - size_t size, retsize; if (to >= subdev->size) { - size = 0; to -= subdev->size; continue; } - if (to + len > subdev->size) - size = subdev->size - to; - else - size = len; - if (!(subdev->flags & MTD_WRITEABLE)) - err = -EROFS; - else if (subdev->write_oob) - err = subdev->write_oob(subdev, to, size, &retsize, - buf); - else - err = -EINVAL; + /* partial write ? */ + if (to + devops.len > subdev->size) + devops.len = subdev->size - to; + err = subdev->write_oob(subdev, to, &devops); + ops->retlen += devops.retlen; if (err) - break; + return err; - *retlen += retsize; - len -= size; - if (len == 0) - break; + devops.len = ops->len - ops->retlen; + if (!devops.len) + return 0; - err = -EINVAL; - buf += size; + if (devops.datbuf) + devops.datbuf += devops.retlen; + if (devops.oobbuf) + devops.oobbuf += devops.ooblen; to = 0; } - return err; + return -EINVAL; } static void concat_erase_callback(struct erase_info *instr) @@ -636,6 +622,60 @@ static void concat_resume(struct mtd_info *mtd) } } +static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs) +{ + struct mtd_concat *concat = CONCAT(mtd); + int i, res = 0; + + if (!concat->subdev[0]->block_isbad) + return res; + + if (ofs > mtd->size) + return -EINVAL; + + for (i = 0; i < concat->num_subdev; i++) { + struct mtd_info *subdev = concat->subdev[i]; + + if (ofs >= subdev->size) { + ofs -= subdev->size; + continue; + } + + res = subdev->block_isbad(subdev, ofs); + break; + } + + return res; +} + +static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs) +{ + struct mtd_concat *concat = CONCAT(mtd); + int i, err = -EINVAL; + + if (!concat->subdev[0]->block_markbad) + return 0; + + if (ofs > mtd->size) + return -EINVAL; + + for (i = 0; i < concat->num_subdev; i++) { + struct mtd_info *subdev = concat->subdev[i]; + + if (ofs >= subdev->size) { + ofs -= subdev->size; + continue; + } + + err = subdev->block_markbad(subdev, ofs); + if (!err) + mtd->ecc_stats.badblocks++; + break; + } + + return err; +} + /* * This function constructs a virtual MTD device by concatenating * num_devs MTD devices. A pointer to the new device object is @@ -677,18 +717,22 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->mtd.flags = subdev[0]->flags; concat->mtd.size = subdev[0]->size; concat->mtd.erasesize = subdev[0]->erasesize; - concat->mtd.oobblock = subdev[0]->oobblock; + concat->mtd.writesize = subdev[0]->writesize; concat->mtd.oobsize = subdev[0]->oobsize; concat->mtd.ecctype = subdev[0]->ecctype; concat->mtd.eccsize = subdev[0]->eccsize; - if (subdev[0]->read_ecc) - concat->mtd.read_ecc = concat_read_ecc; - if (subdev[0]->write_ecc) - concat->mtd.write_ecc = concat_write_ecc; + if (subdev[0]->writev) + concat->mtd.writev = concat_writev; if (subdev[0]->read_oob) concat->mtd.read_oob = concat_read_oob; if (subdev[0]->write_oob) concat->mtd.write_oob = concat_write_oob; + if (subdev[0]->block_isbad) + concat->mtd.block_isbad = concat_block_isbad; + if (subdev[0]->block_markbad) + concat->mtd.block_markbad = concat_block_markbad; + + concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks; concat->subdev[0] = subdev[0]; @@ -717,12 +761,12 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c subdev[i]->flags & MTD_WRITEABLE; } concat->mtd.size += subdev[i]->size; - if (concat->mtd.oobblock != subdev[i]->oobblock || + concat->mtd.ecc_stats.badblocks += + subdev[i]->ecc_stats.badblocks; + if (concat->mtd.writesize != subdev[i]->writesize || concat->mtd.oobsize != subdev[i]->oobsize || concat->mtd.ecctype != subdev[i]->ecctype || concat->mtd.eccsize != subdev[i]->eccsize || - !concat->mtd.read_ecc != !subdev[i]->read_ecc || - !concat->mtd.write_ecc != !subdev[i]->write_ecc || !concat->mtd.read_oob != !subdev[i]->read_oob || !concat->mtd.write_oob != !subdev[i]->write_oob) { kfree(concat); @@ -734,14 +778,11 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c } + concat->mtd.ecclayout = subdev[0]->ecclayout; + concat->num_subdev = num_devs; concat->mtd.name = name; - /* - * NOTE: for now, we do not provide any readv()/writev() methods - * because they are messy to implement and they are not - * used to a great extent anyway. - */ concat->mtd.erase = concat_erase; concat->mtd.read = concat_read; concat->mtd.write = concat_write; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 9905870f56e5..16a952dd486a 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -47,6 +47,7 @@ int add_mtd_device(struct mtd_info *mtd) { int i; + BUG_ON(mtd->writesize == 0); mutex_lock(&mtd_table_mutex); for (i=0; i < MAX_MTD_DEVICES; i++) @@ -254,37 +255,6 @@ int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, return ret; } - -/* default_mtd_readv - default mtd readv method for MTD devices that dont - * implement their own - */ - -int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs, - unsigned long count, loff_t from, size_t *retlen) -{ - unsigned long i; - size_t totlen = 0, thislen; - int ret = 0; - - if(!mtd->read) { - ret = -EIO; - } else { - for (i=0; i<count; i++) { - if (!vecs[i].iov_len) - continue; - ret = mtd->read(mtd, from, vecs[i].iov_len, &thislen, vecs[i].iov_base); - totlen += thislen; - if (ret || thislen != vecs[i].iov_len) - break; - from += vecs[i].iov_len; - } - } - if (retlen) - *retlen = totlen; - return ret; -} - - EXPORT_SYMBOL(add_mtd_device); EXPORT_SYMBOL(del_mtd_device); EXPORT_SYMBOL(get_mtd_device); @@ -292,7 +262,6 @@ EXPORT_SYMBOL(put_mtd_device); EXPORT_SYMBOL(register_mtd_user); EXPORT_SYMBOL(unregister_mtd_user); EXPORT_SYMBOL(default_mtd_writev); -EXPORT_SYMBOL(default_mtd_readv); #ifdef CONFIG_PROC_FS diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 99395911d26f..77a7123a5c56 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -51,16 +51,21 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); + int res; + if (from >= mtd->size) len = 0; else if (from + len > mtd->size) len = mtd->size - from; - if (part->master->read_ecc == NULL) - return part->master->read (part->master, from + part->offset, - len, retlen, buf); - else - return part->master->read_ecc (part->master, from + part->offset, - len, retlen, buf, NULL, &mtd->oobinfo); + res = part->master->read (part->master, from + part->offset, + len, retlen, buf); + if (unlikely(res)) { + if (res == -EUCLEAN) + mtd->ecc_stats.corrected++; + if (res == -EBADMSG) + mtd->ecc_stats.failed++; + } + return res; } static int part_point (struct mtd_info *mtd, loff_t from, size_t len, @@ -74,6 +79,7 @@ static int part_point (struct mtd_info *mtd, loff_t from, size_t len, return part->master->point (part->master, from + part->offset, len, retlen, buf); } + static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len) { struct mtd_part *part = PART(mtd); @@ -81,31 +87,25 @@ static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_ part->master->unpoint (part->master, addr, from + part->offset, len); } - -static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel) +static int part_read_oob(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { struct mtd_part *part = PART(mtd); - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - if (from >= mtd->size) - len = 0; - else if (from + len > mtd->size) - len = mtd->size - from; - return part->master->read_ecc (part->master, from + part->offset, - len, retlen, buf, eccbuf, oobsel); -} + int res; -static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - struct mtd_part *part = PART(mtd); if (from >= mtd->size) - len = 0; - else if (from + len > mtd->size) - len = mtd->size - from; - return part->master->read_oob (part->master, from + part->offset, - len, retlen, buf); + return -EINVAL; + if (from + ops->len > mtd->size) + return -EINVAL; + res = part->master->read_oob(part->master, from + part->offset, ops); + + if (unlikely(res)) { + if (res == -EUCLEAN) + mtd->ecc_stats.corrected++; + if (res == -EBADMSG) + mtd->ecc_stats.failed++; + } + return res; } static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, @@ -148,44 +148,23 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len, len = 0; else if (to + len > mtd->size) len = mtd->size - to; - if (part->master->write_ecc == NULL) - return part->master->write (part->master, to + part->offset, - len, retlen, buf); - else - return part->master->write_ecc (part->master, to + part->offset, - len, retlen, buf, NULL, &mtd->oobinfo); - + return part->master->write (part->master, to + part->offset, + len, retlen, buf); } -static int part_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf, - u_char *eccbuf, struct nand_oobinfo *oobsel) +static int part_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) { struct mtd_part *part = PART(mtd); - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - if (to >= mtd->size) - len = 0; - else if (to + len > mtd->size) - len = mtd->size - to; - return part->master->write_ecc (part->master, to + part->offset, - len, retlen, buf, eccbuf, oobsel); -} -static int part_write_oob (struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - struct mtd_part *part = PART(mtd); if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; + if (to >= mtd->size) - len = 0; - else if (to + len > mtd->size) - len = mtd->size - to; - return part->master->write_oob (part->master, to + part->offset, - len, retlen, buf); + return -EINVAL; + if (to + ops->len > mtd->size) + return -EINVAL; + return part->master->write_oob(part->master, to + part->offset, ops); } static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, @@ -208,52 +187,8 @@ static int part_writev (struct mtd_info *mtd, const struct kvec *vecs, struct mtd_part *part = PART(mtd); if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; - if (part->master->writev_ecc == NULL) - return part->master->writev (part->master, vecs, count, + return part->master->writev (part->master, vecs, count, to + part->offset, retlen); - else - return part->master->writev_ecc (part->master, vecs, count, - to + part->offset, retlen, - NULL, &mtd->oobinfo); -} - -static int part_readv (struct mtd_info *mtd, struct kvec *vecs, - unsigned long count, loff_t from, size_t *retlen) -{ - struct mtd_part *part = PART(mtd); - if (part->master->readv_ecc == NULL) - return part->master->readv (part->master, vecs, count, - from + part->offset, retlen); - else - return part->master->readv_ecc (part->master, vecs, count, - from + part->offset, retlen, - NULL, &mtd->oobinfo); -} - -static int part_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel) -{ - struct mtd_part *part = PART(mtd); - if (!(mtd->flags & MTD_WRITEABLE)) - return -EROFS; - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - return part->master->writev_ecc (part->master, vecs, count, - to + part->offset, retlen, - eccbuf, oobsel); -} - -static int part_readv_ecc (struct mtd_info *mtd, struct kvec *vecs, - unsigned long count, loff_t from, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel) -{ - struct mtd_part *part = PART(mtd); - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - return part->master->readv_ecc (part->master, vecs, count, - from + part->offset, retlen, - eccbuf, oobsel); } static int part_erase (struct mtd_info *mtd, struct erase_info *instr) @@ -329,12 +264,17 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs) static int part_block_markbad (struct mtd_info *mtd, loff_t ofs) { struct mtd_part *part = PART(mtd); + int res; + if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; if (ofs >= mtd->size) return -EINVAL; ofs += part->offset; - return part->master->block_markbad(part->master, ofs); + res = part->master->block_markbad(part->master, ofs); + if (!res) + mtd->ecc_stats.badblocks++; + return res; } /* @@ -398,7 +338,7 @@ int add_mtd_partitions(struct mtd_info *master, slave->mtd.type = master->type; slave->mtd.flags = master->flags & ~parts[i].mask_flags; slave->mtd.size = parts[i].size; - slave->mtd.oobblock = master->oobblock; + slave->mtd.writesize = master->writesize; slave->mtd.oobsize = master->oobsize; slave->mtd.ecctype = master->ecctype; slave->mtd.eccsize = master->eccsize; @@ -415,10 +355,6 @@ int add_mtd_partitions(struct mtd_info *master, slave->mtd.unpoint = part_unpoint; } - if (master->read_ecc) - slave->mtd.read_ecc = part_read_ecc; - if (master->write_ecc) - slave->mtd.write_ecc = part_write_ecc; if (master->read_oob) slave->mtd.read_oob = part_read_oob; if (master->write_oob) @@ -443,12 +379,6 @@ int add_mtd_partitions(struct mtd_info *master, } if (master->writev) slave->mtd.writev = part_writev; - if (master->readv) - slave->mtd.readv = part_readv; - if (master->writev_ecc) - slave->mtd.writev_ecc = part_writev_ecc; - if (master->readv_ecc) - slave->mtd.readv_ecc = part_readv_ecc; if (master->lock) slave->mtd.lock = part_lock; if (master->unlock) @@ -528,8 +458,17 @@ int add_mtd_partitions(struct mtd_info *master, parts[i].name); } - /* copy oobinfo from master */ - memcpy(&slave->mtd.oobinfo, &master->oobinfo, sizeof(slave->mtd.oobinfo)); + slave->mtd.ecclayout = master->ecclayout; + if (master->block_isbad) { + uint32_t offs = 0; + + while(offs < slave->mtd.size) { + if (master->block_isbad(master, + offs + slave->offset)) + slave->mtd.ecc_stats.badblocks++; + offs += slave->mtd.erasesize; + } + } if(parts[i].mtdp) { /* store the object pointer (caller may or may not register it */ diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index cfe288a6e853..3db77eec0ed2 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -23,6 +23,14 @@ config MTD_NAND_VERIFY_WRITE device thinks the write was successful, a bit could have been flipped accidentaly due to device wear or something else. +config MTD_NAND_ECC_SMC + bool "NAND ECC Smart Media byte order" + depends on MTD_NAND + default n + help + Software ECC according to the Smart Media Specification. + The original Linux implementation had byte 0 and 1 swapped. + config MTD_NAND_AUTCPU12 tristate "SmartMediaCard on autronix autcpu12 board" depends on MTD_NAND && ARCH_AUTCPU12 @@ -49,12 +57,24 @@ config MTD_NAND_SPIA help If you had to ask, you don't have one. Say 'N'. +config MTD_NAND_AMS_DELTA + tristate "NAND Flash device on Amstrad E3" + depends on MACH_AMS_DELTA && MTD_NAND + help + Support for NAND flash on Amstrad E3 (Delta). + config MTD_NAND_TOTO tristate "NAND Flash device on TOTO board" - depends on ARCH_OMAP && MTD_NAND + depends on ARCH_OMAP && MTD_NAND && BROKEN help Support for NAND flash on Texas Instruments Toto platform. +config MTD_NAND_TS7250 + tristate "NAND Flash device on TS-7250 board" + depends on MACH_TS72XX && MTD_NAND + help + Support for NAND flash on Technologic Systems TS-7250 platform. + config MTD_NAND_IDS tristate @@ -76,7 +96,7 @@ config MTD_NAND_RTC_FROM4 config MTD_NAND_PPCHAMELEONEVB tristate "NAND Flash device on PPChameleonEVB board" - depends on PPCHAMELEONEVB && MTD_NAND + depends on PPCHAMELEONEVB && MTD_NAND && BROKEN help This enables the NAND flash driver on the PPChameleon EVB Board. @@ -87,7 +107,7 @@ config MTD_NAND_S3C2410 This enables the NAND flash controller on the S3C2410 and S3C2440 SoCs - No board specfic support is done by this driver, each board + No board specific support is done by this driver, each board must advertise a platform_device for the driver to attach. config MTD_NAND_S3C2410_DEBUG @@ -109,6 +129,22 @@ config MTD_NAND_S3C2410_HWECC currently not be able to switch to software, as there is no implementation for ECC method used by the S3C2410 +config MTD_NAND_NDFC + tristate "NDFC NanD Flash Controller" + depends on MTD_NAND && 44x + help + NDFC Nand Flash Controllers are integrated in EP44x SoCs + +config MTD_NAND_S3C2410_CLKSTOP + bool "S3C2410 NAND IDLE clock stop" + depends on MTD_NAND_S3C2410 + default n + help + Stop the clock to the NAND controller when there is no chip + selected to save power. This will mean there is a small delay + when the is NAND chip selected or released, but will save + approximately 5mA of power when there is nothing happening. + config MTD_NAND_DISKONCHIP tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)" depends on MTD_NAND && EXPERIMENTAL @@ -183,11 +219,24 @@ config MTD_NAND_SHARPSL tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)" depends on MTD_NAND && ARCH_PXA +config MTD_NAND_CS553X + tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" + depends on MTD_NAND && X86_32 && (X86_PC || X86_GENERICARCH) + help + The CS553x companion chips for the AMD Geode processor + include NAND flash controllers with built-in hardware ECC + capabilities; enabling this option will allow you to use + these. The driver will check the MSRs to verify that the + controller is enabled for NAND, and currently requires that + the controller be in MMIO mode. + + If you say "m", the module will be called "cs553x_nand.ko". + config MTD_NAND_NANDSIM tristate "Support for NAND Flash Simulator" depends on MTD_NAND && MTD_PARTITIONS help - The simulator may simulate verious NAND flash chips for the + The simulator may simulate various NAND flash chips for the MTD nand layer. endmenu diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 41742026a52e..f74759351c91 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_MTD_NAND) += nand.o nand_ecc.o obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o obj-$(CONFIG_MTD_NAND_SPIA) += spia.o +obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o obj-$(CONFIG_MTD_NAND_TOTO) += toto.o obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o @@ -17,6 +18,9 @@ obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o obj-$(CONFIG_MTD_NAND_H1900) += h1910.o obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o obj-$(CONFIG_MTD_NAND_SHARPSL) += sharpsl.o +obj-$(CONFIG_MTD_NAND_TS7250) += ts7250.o obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o +obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o +obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o nand-objs = nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c new file mode 100644 index 000000000000..d7897dc6b3c8 --- /dev/null +++ b/drivers/mtd/nand/ams-delta.c @@ -0,0 +1,237 @@ +/* + * drivers/mtd/nand/ams-delta.c + * + * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li> + * + * Derived from drivers/mtd/toto.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Overview: + * This is a device driver for the NAND flash device found on the + * Amstrad E3 (Delta). + */ + +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/sizes.h> +#include <asm/arch/gpio.h> +#include <asm/arch/board-ams-delta.h> + +/* + * MTD structure for E3 (Delta) + */ +static struct mtd_info *ams_delta_mtd = NULL; + +#define NAND_MASK (AMS_DELTA_LATCH2_NAND_NRE | AMS_DELTA_LATCH2_NAND_NWE | AMS_DELTA_LATCH2_NAND_CLE | AMS_DELTA_LATCH2_NAND_ALE | AMS_DELTA_LATCH2_NAND_NCE | AMS_DELTA_LATCH2_NAND_NWP) + +/* + * Define partitions for flash devices + */ + +static struct mtd_partition partition_info[] = { + { .name = "Kernel", + .offset = 0, + .size = 3 * SZ_1M + SZ_512K }, + { .name = "u-boot", + .offset = 3 * SZ_1M + SZ_512K, + .size = SZ_256K }, + { .name = "u-boot params", + .offset = 3 * SZ_1M + SZ_512K + SZ_256K, + .size = SZ_256K }, + { .name = "Amstrad LDR", + .offset = 4 * SZ_1M, + .size = SZ_256K }, + { .name = "File system", + .offset = 4 * SZ_1M + 1 * SZ_256K, + .size = 27 * SZ_1M }, + { .name = "PBL reserved", + .offset = 32 * SZ_1M - 3 * SZ_256K, + .size = 3 * SZ_256K }, +}; + +static void ams_delta_write_byte(struct mtd_info *mtd, u_char byte) +{ + struct nand_chip *this = mtd->priv; + + omap_writew(0, (OMAP_MPUIO_BASE + OMAP_MPUIO_IO_CNTL)); + omap_writew(byte, this->IO_ADDR_W); + ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NWE, 0); + ndelay(40); + ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NWE, + AMS_DELTA_LATCH2_NAND_NWE); +} + +static u_char ams_delta_read_byte(struct mtd_info *mtd) +{ + u_char res; + struct nand_chip *this = mtd->priv; + + ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NRE, 0); + ndelay(40); + omap_writew(~0, (OMAP_MPUIO_BASE + OMAP_MPUIO_IO_CNTL)); + res = omap_readw(this->IO_ADDR_R); + ams_delta_latch2_write(AMS_DELTA_LATCH2_NAND_NRE, + AMS_DELTA_LATCH2_NAND_NRE); + + return res; +} + +static void ams_delta_write_buf(struct mtd_info *mtd, const u_char *buf, + int len) +{ + int i; + + for (i=0; i<len; i++) + ams_delta_write_byte(mtd, buf[i]); +} + +static void ams_delta_read_buf(struct mtd_info *mtd, u_char *buf, int len) +{ + int i; + + for (i=0; i<len; i++) + buf[i] = ams_delta_read_byte(mtd); +} + +static int ams_delta_verify_buf(struct mtd_info *mtd, const u_char *buf, + int len) +{ + int i; + + for (i=0; i<len; i++) + if (buf[i] != ams_delta_read_byte(mtd)) + return -EFAULT; + + return 0; +} + +/* + * Command control function + * + * ctrl: + * NAND_NCE: bit 0 -> bit 2 + * NAND_CLE: bit 1 -> bit 7 + * NAND_ALE: bit 2 -> bit 6 + */ +static void ams_delta_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned long bits; + + bits = (~ctrl & NAND_NCE) << 2; + bits |= (ctrl & NAND_CLE) << 7; + bits |= (ctrl & NAND_ALE) << 6; + + ams_delta_latch2_write(0xC2, bits); + } + + if (cmd != NAND_CMD_NONE) + ams_delta_write_byte(mtd, cmd); +} + +static int ams_delta_nand_ready(struct mtd_info *mtd) +{ + return omap_get_gpio_datain(AMS_DELTA_GPIO_PIN_NAND_RB); +} + +/* + * Main initialization routine + */ +static int __init ams_delta_init(void) +{ + struct nand_chip *this; + int err = 0; + + /* Allocate memory for MTD device structure and private data */ + ams_delta_mtd = kmalloc(sizeof(struct mtd_info) + + sizeof(struct nand_chip), GFP_KERNEL); + if (!ams_delta_mtd) { + printk (KERN_WARNING "Unable to allocate E3 NAND MTD device structure.\n"); + err = -ENOMEM; + goto out; + } + + ams_delta_mtd->owner = THIS_MODULE; + + /* Get pointer to private data */ + this = (struct nand_chip *) (&ams_delta_mtd[1]); + + /* Initialize structures */ + memset(ams_delta_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); + + /* Link the private data with the MTD structure */ + ams_delta_mtd->priv = this; + + /* Set address of NAND IO lines */ + this->IO_ADDR_R = (OMAP_MPUIO_BASE + OMAP_MPUIO_INPUT_LATCH); + this->IO_ADDR_W = (OMAP_MPUIO_BASE + OMAP_MPUIO_OUTPUT); + this->read_byte = ams_delta_read_byte; + this->write_buf = ams_delta_write_buf; + this->read_buf = ams_delta_read_buf; + this->verify_buf = ams_delta_verify_buf; + this->cmd_ctrl = ams_delta_hwcontrol; + if (!omap_request_gpio(AMS_DELTA_GPIO_PIN_NAND_RB)) { + this->dev_ready = ams_delta_nand_ready; + } else { + this->dev_ready = NULL; + printk(KERN_NOTICE "Couldn't request gpio for Delta NAND ready.\n"); + } + /* 25 us command delay time */ + this->chip_delay = 30; + this->ecc.mode = NAND_ECC_SOFT; + + /* Set chip enabled, but */ + ams_delta_latch2_write(NAND_MASK, AMS_DELTA_LATCH2_NAND_NRE | + AMS_DELTA_LATCH2_NAND_NWE | + AMS_DELTA_LATCH2_NAND_NCE | + AMS_DELTA_LATCH2_NAND_NWP); + + /* Scan to find existance of the device */ + if (nand_scan(ams_delta_mtd, 1)) { + err = -ENXIO; + goto out_mtd; + } + + /* Register the partitions */ + add_mtd_partitions(ams_delta_mtd, partition_info, + ARRAY_SIZE(partition_info)); + + goto out; + + out_mtd: + kfree(ams_delta_mtd); + out: + return err; +} + +module_init(ams_delta_init); + +/* + * Clean up routine + */ +static void __exit ams_delta_cleanup(void) +{ + /* Release resources, unregister device */ + nand_release(ams_delta_mtd); + + /* Free the MTD device structure */ + kfree(ams_delta_mtd); +} +module_exit(ams_delta_cleanup); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>"); +MODULE_DESCRIPTION("Glue layer for NAND flash on Amstrad E3 (Delta)"); diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index bde3550910a2..31228334da12 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/init.h> #include <linux/module.h> +#include <linux/interrupt.h> #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> @@ -38,22 +39,21 @@ */ static struct mtd_info *au1550_mtd = NULL; static void __iomem *p_nand; -static int nand_width = 1; /* default x8*/ +static int nand_width = 1; /* default x8 */ +static void (*au1550_write_byte)(struct mtd_info *, u_char); /* * Define partitions for flash device */ static const struct mtd_partition partition_info[] = { { - .name = "NAND FS 0", - .offset = 0, - .size = 8*1024*1024 - }, + .name = "NAND FS 0", + .offset = 0, + .size = 8 * 1024 * 1024}, { - .name = "NAND FS 1", - .offset = MTDPART_OFS_APPEND, - .size = MTDPART_SIZ_FULL - } + .name = "NAND FS 1", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL} }; /** @@ -130,21 +130,6 @@ static u16 au_read_word(struct mtd_info *mtd) } /** - * au_write_word - write one word to the chip - * @mtd: MTD device structure - * @word: data word to write - * - * write function for 16bit buswith without - * endianess conversion - */ -static void au_write_word(struct mtd_info *mtd, u16 word) -{ - struct nand_chip *this = mtd->priv; - writew(word, this->IO_ADDR_W); - au_sync(); -} - -/** * au_write_buf - write buffer to chip * @mtd: MTD device structure * @buf: data buffer @@ -157,7 +142,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len) int i; struct nand_chip *this = mtd->priv; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { writeb(buf[i], this->IO_ADDR_W); au_sync(); } @@ -176,7 +161,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len) int i; struct nand_chip *this = mtd->priv; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { buf[i] = readb(this->IO_ADDR_R); au_sync(); } @@ -195,7 +180,7 @@ static int au_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) int i; struct nand_chip *this = mtd->priv; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { if (buf[i] != readb(this->IO_ADDR_R)) return -EFAULT; au_sync(); @@ -219,7 +204,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { writew(p[i], this->IO_ADDR_W); au_sync(); } @@ -241,7 +226,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len) u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { p[i] = readw(this->IO_ADDR_R); au_sync(); } @@ -262,7 +247,7 @@ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) { + for (i = 0; i < len; i++) { if (p[i] != readw(this->IO_ADDR_R)) return -EFAULT; au_sync(); @@ -270,32 +255,52 @@ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) return 0; } +/* Select the chip by setting nCE to low */ +#define NAND_CTL_SETNCE 1 +/* Deselect the chip by setting nCE to high */ +#define NAND_CTL_CLRNCE 2 +/* Select the command latch by setting CLE to high */ +#define NAND_CTL_SETCLE 3 +/* Deselect the command latch by setting CLE to low */ +#define NAND_CTL_CLRCLE 4 +/* Select the address latch by setting ALE to high */ +#define NAND_CTL_SETALE 5 +/* Deselect the address latch by setting ALE to low */ +#define NAND_CTL_CLRALE 6 static void au1550_hwcontrol(struct mtd_info *mtd, int cmd) { register struct nand_chip *this = mtd->priv; - switch(cmd){ + switch (cmd) { - case NAND_CTL_SETCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_CMD; break; - case NAND_CTL_CLRCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; break; + case NAND_CTL_SETCLE: + this->IO_ADDR_W = p_nand + MEM_STNAND_CMD; + break; + + case NAND_CTL_CLRCLE: + this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; + break; + + case NAND_CTL_SETALE: + this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR; + break; - case NAND_CTL_SETALE: this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR; break; case NAND_CTL_CLRALE: this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; - /* FIXME: Nobody knows why this is neccecary, + /* FIXME: Nobody knows why this is necessary, * but it works only that way */ udelay(1); break; case NAND_CTL_SETNCE: /* assert (force assert) chip enable */ - au_writel((1<<(4+NAND_CS)) , MEM_STNDCTL); break; + au_writel((1 << (4 + NAND_CS)), MEM_STNDCTL); break; case NAND_CTL_CLRNCE: - /* deassert chip enable */ - au_writel(0, MEM_STNDCTL); break; + /* deassert chip enable */ + au_writel(0, MEM_STNDCTL); break; } @@ -312,69 +317,200 @@ int au1550_device_ready(struct mtd_info *mtd) return ret; } +/** + * au1550_select_chip - control -CE line + * Forbid driving -CE manually permitting the NAND controller to do this. + * Keeping -CE asserted during the whole sector reads interferes with the + * NOR flash and PCMCIA drivers as it causes contention on the static bus. + * We only have to hold -CE low for the NAND read commands since the flash + * chip needs it to be asserted during chip not ready time but the NAND + * controller keeps it released. + * + * @mtd: MTD device structure + * @chip: chipnumber to select, -1 for deselect + */ +static void au1550_select_chip(struct mtd_info *mtd, int chip) +{ +} + +/** + * au1550_command - Send command to NAND device + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none + */ +static void au1550_command(struct mtd_info *mtd, unsigned command, int column, int page_addr) +{ + register struct nand_chip *this = mtd->priv; + int ce_override = 0, i; + ulong flags; + + /* Begin command latch cycle */ + au1550_hwcontrol(mtd, NAND_CTL_SETCLE); + /* + * Write out the command to the device. + */ + if (command == NAND_CMD_SEQIN) { + int readcmd; + + if (column >= mtd->writesize) { + /* OOB area */ + column -= mtd->writesize; + readcmd = NAND_CMD_READOOB; + } else if (column < 256) { + /* First 256 bytes --> READ0 */ + readcmd = NAND_CMD_READ0; + } else { + column -= 256; + readcmd = NAND_CMD_READ1; + } + au1550_write_byte(mtd, readcmd); + } + au1550_write_byte(mtd, command); + + /* Set ALE and clear CLE to start address cycle */ + au1550_hwcontrol(mtd, NAND_CTL_CLRCLE); + + if (column != -1 || page_addr != -1) { + au1550_hwcontrol(mtd, NAND_CTL_SETALE); + + /* Serially input address */ + if (column != -1) { + /* Adjust columns for 16 bit buswidth */ + if (this->options & NAND_BUSWIDTH_16) + column >>= 1; + au1550_write_byte(mtd, column); + } + if (page_addr != -1) { + au1550_write_byte(mtd, (u8)(page_addr & 0xff)); + + if (command == NAND_CMD_READ0 || + command == NAND_CMD_READ1 || + command == NAND_CMD_READOOB) { + /* + * NAND controller will release -CE after + * the last address byte is written, so we'll + * have to forcibly assert it. No interrupts + * are allowed while we do this as we don't + * want the NOR flash or PCMCIA drivers to + * steal our precious bytes of data... + */ + ce_override = 1; + local_irq_save(flags); + au1550_hwcontrol(mtd, NAND_CTL_SETNCE); + } + + au1550_write_byte(mtd, (u8)(page_addr >> 8)); + + /* One more address cycle for devices > 32MiB */ + if (this->chipsize > (32 << 20)) + au1550_write_byte(mtd, (u8)((page_addr >> 16) & 0x0f)); + } + /* Latch in address */ + au1550_hwcontrol(mtd, NAND_CTL_CLRALE); + } + + /* + * Program and erase have their own busy handlers. + * Status and sequential in need no delay. + */ + switch (command) { + + case NAND_CMD_PAGEPROG: + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_SEQIN: + case NAND_CMD_STATUS: + return; + + case NAND_CMD_RESET: + break; + + case NAND_CMD_READ0: + case NAND_CMD_READ1: + case NAND_CMD_READOOB: + /* Check if we're really driving -CE low (just in case) */ + if (unlikely(!ce_override)) + break; + + /* Apply a short delay always to ensure that we do wait tWB. */ + ndelay(100); + /* Wait for a chip to become ready... */ + for (i = this->chip_delay; !this->dev_ready(mtd) && i > 0; --i) + udelay(1); + + /* Release -CE and re-enable interrupts. */ + au1550_hwcontrol(mtd, NAND_CTL_CLRNCE); + local_irq_restore(flags); + return; + } + /* Apply this short delay always to ensure that we do wait tWB. */ + ndelay(100); + + while(!this->dev_ready(mtd)); +} + + /* * Main initialization routine */ -int __init au1xxx_nand_init (void) +static int __init au1xxx_nand_init(void) { struct nand_chip *this; - u16 boot_swapboot = 0; /* default value */ + u16 boot_swapboot = 0; /* default value */ int retval; u32 mem_staddr; u32 nand_phys; /* Allocate memory for MTD device structure and private data */ - au1550_mtd = kmalloc (sizeof(struct mtd_info) + - sizeof (struct nand_chip), GFP_KERNEL); + au1550_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!au1550_mtd) { - printk ("Unable to allocate NAND MTD dev structure.\n"); + printk("Unable to allocate NAND MTD dev structure.\n"); return -ENOMEM; } /* Get pointer to private data */ - this = (struct nand_chip *) (&au1550_mtd[1]); + this = (struct nand_chip *)(&au1550_mtd[1]); /* Initialize structures */ - memset((char *) au1550_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(au1550_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ au1550_mtd->priv = this; + au1550_mtd->owner = THIS_MODULE; - /* disable interrupts */ - au_writel(au_readl(MEM_STNDCTL) & ~(1<<8), MEM_STNDCTL); - - /* disable NAND boot */ - au_writel(au_readl(MEM_STNDCTL) & ~(1<<0), MEM_STNDCTL); + /* MEM_STNDCTL: disable ints, disable nand boot */ + au_writel(0, MEM_STNDCTL); #ifdef CONFIG_MIPS_PB1550 /* set gpio206 high */ - au_writel(au_readl(GPIO2_DIR) & ~(1<<6), GPIO2_DIR); + au_writel(au_readl(GPIO2_DIR) & ~(1 << 6), GPIO2_DIR); - boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) | - ((bcsr->status >> 6) & 0x1); + boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) | ((bcsr->status >> 6) & 0x1); switch (boot_swapboot) { - case 0: - case 2: - case 8: - case 0xC: - case 0xD: - /* x16 NAND Flash */ - nand_width = 0; - break; - case 1: - case 9: - case 3: - case 0xE: - case 0xF: - /* x8 NAND Flash */ - nand_width = 1; - break; - default: - printk("Pb1550 NAND: bad boot:swap\n"); - retval = -EINVAL; - goto outmem; + case 0: + case 2: + case 8: + case 0xC: + case 0xD: + /* x16 NAND Flash */ + nand_width = 0; + break; + case 1: + case 9: + case 3: + case 0xE: + case 0xF: + /* x8 NAND Flash */ + nand_width = 1; + break; + default: + printk("Pb1550 NAND: bad boot:swap\n"); + retval = -EINVAL; + goto outmem; } #endif @@ -424,21 +560,22 @@ int __init au1xxx_nand_init (void) /* make controller and MTD agree */ if (NAND_CS == 0) - nand_width = au_readl(MEM_STCFG0) & (1<<22); + nand_width = au_readl(MEM_STCFG0) & (1 << 22); if (NAND_CS == 1) - nand_width = au_readl(MEM_STCFG1) & (1<<22); + nand_width = au_readl(MEM_STCFG1) & (1 << 22); if (NAND_CS == 2) - nand_width = au_readl(MEM_STCFG2) & (1<<22); + nand_width = au_readl(MEM_STCFG2) & (1 << 22); if (NAND_CS == 3) - nand_width = au_readl(MEM_STCFG3) & (1<<22); - + nand_width = au_readl(MEM_STCFG3) & (1 << 22); /* Set address of hardware control function */ - this->hwcontrol = au1550_hwcontrol; this->dev_ready = au1550_device_ready; + this->select_chip = au1550_select_chip; + this->cmdfunc = au1550_command; + /* 30 us command delay time */ this->chip_delay = 30; - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; this->options = NAND_NO_AUTOINCR; @@ -446,15 +583,14 @@ int __init au1xxx_nand_init (void) this->options |= NAND_BUSWIDTH_16; this->read_byte = (!nand_width) ? au_read_byte16 : au_read_byte; - this->write_byte = (!nand_width) ? au_write_byte16 : au_write_byte; - this->write_word = au_write_word; + au1550_write_byte = (!nand_width) ? au_write_byte16 : au_write_byte; this->read_word = au_read_word; this->write_buf = (!nand_width) ? au_write_buf16 : au_write_buf; this->read_buf = (!nand_width) ? au_read_buf16 : au_read_buf; this->verify_buf = (!nand_width) ? au_verify_buf16 : au_verify_buf; /* Scan to find existence of the device */ - if (nand_scan (au1550_mtd, 1)) { + if (nand_scan(au1550_mtd, 1)) { retval = -ENXIO; goto outio; } @@ -465,10 +601,10 @@ int __init au1xxx_nand_init (void) return 0; outio: - iounmap ((void *)p_nand); + iounmap((void *)p_nand); outmem: - kfree (au1550_mtd); + kfree(au1550_mtd); return retval; } @@ -477,22 +613,21 @@ module_init(au1xxx_nand_init); /* * Clean up routine */ -#ifdef MODULE -static void __exit au1550_cleanup (void) +static void __exit au1550_cleanup(void) { - struct nand_chip *this = (struct nand_chip *) &au1550_mtd[1]; + struct nand_chip *this = (struct nand_chip *)&au1550_mtd[1]; /* Release resources, unregister device */ - nand_release (au1550_mtd); + nand_release(au1550_mtd); /* Free the MTD device structure */ - kfree (au1550_mtd); + kfree(au1550_mtd); /* Unmap */ - iounmap ((void *)p_nand); + iounmap((void *)p_nand); } + module_exit(au1550_cleanup); -#endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("Embedded Edge, LLC"); diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c index a3c7fea404d0..fe94ae9ae1f2 100644 --- a/drivers/mtd/nand/autcpu12.c +++ b/drivers/mtd/nand/autcpu12.c @@ -4,7 +4,7 @@ * Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de> * * Derived from drivers/mtd/spia.c - * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) + * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) * * $Id: autcpu12.c,v 1.23 2005/11/07 11:14:30 gleixner Exp $ * @@ -42,12 +42,7 @@ * MTD structure for AUTCPU12 board */ static struct mtd_info *autcpu12_mtd = NULL; - -static int autcpu12_io_base = CS89712_VIRT_BASE; -static int autcpu12_fio_pbase = AUTCPU12_PHYS_SMC; -static int autcpu12_fio_ctrl = AUTCPU12_SMC_SELECT_OFFSET; -static int autcpu12_pedr = AUTCPU12_SMC_PORT_OFFSET; -static void __iomem * autcpu12_fio_base; +static void __iomem *autcpu12_fio_base; /* * Define partitions for flash devices @@ -94,108 +89,131 @@ static struct mtd_partition partition_info128k[] = { #define NUM_PARTITIONS128K 2 /* * hardware specific access to control-lines -*/ -static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd) + * + * ALE bit 4 autcpu12_pedr + * CLE bit 5 autcpu12_pedr + * NCE bit 0 fio_ctrl + * + */ +static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { + struct nand_chip *chip = mtd->priv; - switch(cmd){ - - case NAND_CTL_SETCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |= AUTCPU12_SMC_CLE; break; - case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_CLE; break; + if (ctrl & NAND_CTRL_CHANGE) { + void __iomem *addr + unsigned char bits; - case NAND_CTL_SETALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |= AUTCPU12_SMC_ALE; break; - case NAND_CTL_CLRALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_ALE; break; + addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET; + bits = (ctrl & NAND_CLE) << 4; + bits |= (ctrl & NAND_ALE) << 2; + writeb((readb(addr) & ~0x30) | bits, addr); - case NAND_CTL_SETNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x01; break; - case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x00; break; + addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET; + writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr); } + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } /* -* read device ready pin -*/ + * read device ready pin + */ int autcpu12_device_ready(struct mtd_info *mtd) { + void __iomem *addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET; - return ( (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) & AUTCPU12_SMC_RDY) ? 1 : 0; - + return readb(addr) & AUTCPU12_SMC_RDY; } /* * Main initialization routine */ -int __init autcpu12_init (void) +static int __init autcpu12_init(void) { struct nand_chip *this; int err = 0; /* Allocate memory for MTD device structure and private data */ - autcpu12_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip), - GFP_KERNEL); + autcpu12_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), + GFP_KERNEL); if (!autcpu12_mtd) { - printk ("Unable to allocate AUTCPU12 NAND MTD device structure.\n"); + printk("Unable to allocate AUTCPU12 NAND MTD device structure.\n"); err = -ENOMEM; goto out; } /* map physical adress */ - autcpu12_fio_base = ioremap(autcpu12_fio_pbase,SZ_1K); - if(!autcpu12_fio_base){ + autcpu12_fio_base = ioremap(AUTCPU12_PHYS_SMC, SZ_1K); + if (!autcpu12_fio_base) { printk("Ioremap autcpu12 SmartMedia Card failed\n"); err = -EIO; goto out_mtd; } /* Get pointer to private data */ - this = (struct nand_chip *) (&autcpu12_mtd[1]); + this = (struct nand_chip *)(&autcpu12_mtd[1]); /* Initialize structures */ - memset((char *) autcpu12_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(autcpu12_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ autcpu12_mtd->priv = this; + autcpu12_mtd->owner = THIS_MODULE; /* Set address of NAND IO lines */ this->IO_ADDR_R = autcpu12_fio_base; this->IO_ADDR_W = autcpu12_fio_base; - this->hwcontrol = autcpu12_hwcontrol; + this->cmd_ctrl = autcpu12_hwcontrol; this->dev_ready = autcpu12_device_ready; /* 20 us command delay time */ this->chip_delay = 20; - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ /* - this->options = NAND_USE_FLASH_BBT; - */ + this->options = NAND_USE_FLASH_BBT; + */ this->options = NAND_USE_FLASH_BBT; /* Scan to find existance of the device */ - if (nand_scan (autcpu12_mtd, 1)) { + if (nand_scan(autcpu12_mtd, 1)) { err = -ENXIO; goto out_ior; } /* Register the partitions */ - switch(autcpu12_mtd->size){ - case SZ_16M: add_mtd_partitions(autcpu12_mtd, partition_info16k, NUM_PARTITIONS16K); break; - case SZ_32M: add_mtd_partitions(autcpu12_mtd, partition_info32k, NUM_PARTITIONS32K); break; - case SZ_64M: add_mtd_partitions(autcpu12_mtd, partition_info64k, NUM_PARTITIONS64K); break; - case SZ_128M: add_mtd_partitions(autcpu12_mtd, partition_info128k, NUM_PARTITIONS128K); break; - default: { - printk ("Unsupported SmartMedia device\n"); + switch (autcpu12_mtd->size) { + case SZ_16M: + add_mtd_partitions(autcpu12_mtd, partition_info16k, + NUM_PARTITIONS16K); + break; + case SZ_32M: + add_mtd_partitions(autcpu12_mtd, partition_info32k, + NUM_PARTITIONS32K); + break; + case SZ_64M: + add_mtd_partitions(autcpu12_mtd, partition_info64k, + NUM_PARTITIONS64K); + break; + case SZ_128M: + add_mtd_partitions(autcpu12_mtd, partition_info128k, + NUM_PARTITIONS128K); + break; + default: + printk("Unsupported SmartMedia device\n"); err = -ENXIO; goto out_ior; - } } goto out; -out_ior: - iounmap((void *)autcpu12_fio_base); -out_mtd: - kfree (autcpu12_mtd); -out: + out_ior: + iounmap(autcpu12_fio_base); + out_mtd: + kfree(autcpu12_mtd); + out: return err; } @@ -204,20 +222,19 @@ module_init(autcpu12_init); /* * Clean up routine */ -#ifdef MODULE -static void __exit autcpu12_cleanup (void) +static void __exit autcpu12_cleanup(void) { /* Release resources, unregister device */ - nand_release (autcpu12_mtd); + nand_release(autcpu12_mtd); /* unmap physical adress */ - iounmap((void *)autcpu12_fio_base); + iounmap(autcpu12_fio_base); /* Free the MTD device structure */ - kfree (autcpu12_mtd); + kfree(autcpu12_mtd); } + module_exit(autcpu12_cleanup); -#endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>"); diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c new file mode 100644 index 000000000000..e0a1d386e581 --- /dev/null +++ b/drivers/mtd/nand/cs553x_nand.c @@ -0,0 +1,353 @@ +/* + * drivers/mtd/nand/cs553x_nand.c + * + * (C) 2005, 2006 Red Hat Inc. + * + * Author: David Woodhouse <dwmw2@infradead.org> + * Tom Sylla <tom.sylla@amd.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Overview: + * This is a device driver for the NAND flash controller found on + * the AMD CS5535/CS5536 companion chipsets for the Geode processor. + * + */ + +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> + +#include <asm/msr.h> +#include <asm/io.h> + +#define NR_CS553X_CONTROLLERS 4 + +#define MSR_DIVIL_GLD_CAP 0x51400000 /* DIVIL capabilitiies */ +#define CAP_CS5535 0x2df000ULL +#define CAP_CS5536 0x5df500ULL + +/* NAND Timing MSRs */ +#define MSR_NANDF_DATA 0x5140001b /* NAND Flash Data Timing MSR */ +#define MSR_NANDF_CTL 0x5140001c /* NAND Flash Control Timing */ +#define MSR_NANDF_RSVD 0x5140001d /* Reserved */ + +/* NAND BAR MSRs */ +#define MSR_DIVIL_LBAR_FLSH0 0x51400010 /* Flash Chip Select 0 */ +#define MSR_DIVIL_LBAR_FLSH1 0x51400011 /* Flash Chip Select 1 */ +#define MSR_DIVIL_LBAR_FLSH2 0x51400012 /* Flash Chip Select 2 */ +#define MSR_DIVIL_LBAR_FLSH3 0x51400013 /* Flash Chip Select 3 */ + /* Each made up of... */ +#define FLSH_LBAR_EN (1ULL<<32) +#define FLSH_NOR_NAND (1ULL<<33) /* 1 for NAND */ +#define FLSH_MEM_IO (1ULL<<34) /* 1 for MMIO */ + /* I/O BARs have BASE_ADDR in bits 15:4, IO_MASK in 47:36 */ + /* MMIO BARs have BASE_ADDR in bits 31:12, MEM_MASK in 63:44 */ + +/* Pin function selection MSR (IDE vs. flash on the IDE pins) */ +#define MSR_DIVIL_BALL_OPTS 0x51400015 +#define PIN_OPT_IDE (1<<0) /* 0 for flash, 1 for IDE */ + +/* Registers within the NAND flash controller BAR -- memory mapped */ +#define MM_NAND_DATA 0x00 /* 0 to 0x7ff, in fact */ +#define MM_NAND_CTL 0x800 /* Any even address 0x800-0x80e */ +#define MM_NAND_IO 0x801 /* Any odd address 0x801-0x80f */ +#define MM_NAND_STS 0x810 +#define MM_NAND_ECC_LSB 0x811 +#define MM_NAND_ECC_MSB 0x812 +#define MM_NAND_ECC_COL 0x813 +#define MM_NAND_LAC 0x814 +#define MM_NAND_ECC_CTL 0x815 + +/* Registers within the NAND flash controller BAR -- I/O mapped */ +#define IO_NAND_DATA 0x00 /* 0 to 3, in fact */ +#define IO_NAND_CTL 0x04 +#define IO_NAND_IO 0x05 +#define IO_NAND_STS 0x06 +#define IO_NAND_ECC_CTL 0x08 +#define IO_NAND_ECC_LSB 0x09 +#define IO_NAND_ECC_MSB 0x0a +#define IO_NAND_ECC_COL 0x0b +#define IO_NAND_LAC 0x0c + +#define CS_NAND_CTL_DIST_EN (1<<4) /* Enable NAND Distract interrupt */ +#define CS_NAND_CTL_RDY_INT_MASK (1<<3) /* Enable RDY/BUSY# interrupt */ +#define CS_NAND_CTL_ALE (1<<2) +#define CS_NAND_CTL_CLE (1<<1) +#define CS_NAND_CTL_CE (1<<0) /* Keep low; 1 to reset */ + +#define CS_NAND_STS_FLASH_RDY (1<<3) +#define CS_NAND_CTLR_BUSY (1<<2) +#define CS_NAND_CMD_COMP (1<<1) +#define CS_NAND_DIST_ST (1<<0) + +#define CS_NAND_ECC_PARITY (1<<2) +#define CS_NAND_ECC_CLRECC (1<<1) +#define CS_NAND_ECC_ENECC (1<<0) + +static void cs553x_read_buf(struct mtd_info *mtd, u_char *buf, int len) +{ + struct nand_chip *this = mtd->priv; + + while (unlikely(len > 0x800)) { + memcpy_fromio(buf, this->IO_ADDR_R, 0x800); + buf += 0x800; + len -= 0x800; + } + memcpy_fromio(buf, this->IO_ADDR_R, len); +} + +static void cs553x_write_buf(struct mtd_info *mtd, const u_char *buf, int len) +{ + struct nand_chip *this = mtd->priv; + + while (unlikely(len > 0x800)) { + memcpy_toio(this->IO_ADDR_R, buf, 0x800); + buf += 0x800; + len -= 0x800; + } + memcpy_toio(this->IO_ADDR_R, buf, len); +} + +static unsigned char cs553x_read_byte(struct mtd_info *mtd) +{ + struct nand_chip *this = mtd->priv; + return readb(this->IO_ADDR_R); +} + +static void cs553x_write_byte(struct mtd_info *mtd, u_char byte) +{ + struct nand_chip *this = mtd->priv; + int i = 100000; + + while (i && readb(this->IO_ADDR_R + MM_NAND_STS) & CS_NAND_CTLR_BUSY) { + udelay(1); + i--; + } + writeb(byte, this->IO_ADDR_W + 0x801); +} + +static void cs553x_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + void __iomem *mmio_base = this->IO_ADDR_R; + if (ctrl & NAND_CTRL_CHANGE) { + unsigned char ctl = (ctrl & ~NAND_CTRL_CHANGE ) ^ 0x01; + writeb(ctl, mmio_base + MM_NAND_CTL); + } + if (cmd != NAND_CMD_NONE) + cs553x_write_byte(mtd, cmd); +} + +static int cs553x_device_ready(struct mtd_info *mtd) +{ + struct nand_chip *this = mtd->priv; + void __iomem *mmio_base = this->IO_ADDR_R; + unsigned char foo = readb(mmio_base + MM_NAND_STS); + + return (foo & CS_NAND_STS_FLASH_RDY) && !(foo & CS_NAND_CTLR_BUSY); +} + +static void cs_enable_hwecc(struct mtd_info *mtd, int mode) +{ + struct nand_chip *this = mtd->priv; + void __iomem *mmio_base = this->IO_ADDR_R; + + writeb(0x07, mmio_base + MM_NAND_ECC_CTL); +} + +static int cs_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) +{ + uint32_t ecc; + struct nand_chip *this = mtd->priv; + void __iomem *mmio_base = this->IO_ADDR_R; + + ecc = readl(mmio_base + MM_NAND_STS); + + ecc_code[1] = ecc >> 8; + ecc_code[0] = ecc >> 16; + ecc_code[2] = ecc >> 24; + return 0; +} + +static struct mtd_info *cs553x_mtd[4]; + +static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) +{ + int err = 0; + struct nand_chip *this; + struct mtd_info *new_mtd; + + printk(KERN_NOTICE "Probing CS553x NAND controller CS#%d at %sIO 0x%08lx\n", cs, mmio?"MM":"P", adr); + + if (!mmio) { + printk(KERN_NOTICE "PIO mode not yet implemented for CS553X NAND controller\n"); + return -ENXIO; + } + + /* Allocate memory for MTD device structure and private data */ + new_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); + if (!new_mtd) { + printk(KERN_WARNING "Unable to allocate CS553X NAND MTD device structure.\n"); + err = -ENOMEM; + goto out; + } + + /* Get pointer to private data */ + this = (struct nand_chip *)(&new_mtd[1]); + + /* Initialize structures */ + memset(new_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); + + /* Link the private data with the MTD structure */ + new_mtd->priv = this; + new_mtd->owner = THIS_MODULE; + + /* map physical address */ + this->IO_ADDR_R = this->IO_ADDR_W = ioremap(adr, 4096); + if (!this->IO_ADDR_R) { + printk(KERN_WARNING "ioremap cs553x NAND @0x%08lx failed\n", adr); + err = -EIO; + goto out_mtd; + } + + this->cmd_ctrl = cs553x_hwcontrol; + this->dev_ready = cs553x_device_ready; + this->read_byte = cs553x_read_byte; + this->read_buf = cs553x_read_buf; + this->write_buf = cs553x_write_buf; + + this->chip_delay = 0; + + this->ecc.mode = NAND_ECC_HW; + this->ecc.size = 256; + this->ecc.bytes = 3; + this->ecc.hwctl = cs_enable_hwecc; + this->ecc.calculate = cs_calculate_ecc; + this->ecc.correct = nand_correct_data; + + /* Enable the following for a flash based bad block table */ + this->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR; + + /* Scan to find existance of the device */ + if (nand_scan(new_mtd, 1)) { + err = -ENXIO; + goto out_ior; + } + + cs553x_mtd[cs] = new_mtd; + goto out; + +out_ior: + iounmap((void *)this->IO_ADDR_R); +out_mtd: + kfree(new_mtd); +out: + return err; +} + +static int is_geode(void) +{ + /* These are the CPUs which will have a CS553[56] companion chip */ + if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD && + boot_cpu_data.x86 == 5 && + boot_cpu_data.x86_model == 10) + return 1; /* Geode LX */ + + if ((boot_cpu_data.x86_vendor == X86_VENDOR_NSC || + boot_cpu_data.x86_vendor == X86_VENDOR_CYRIX) && + boot_cpu_data.x86 == 5 && + boot_cpu_data.x86_model == 5) + return 1; /* Geode GX (née GX2) */ + + return 0; +} + +static int __init cs553x_init(void) +{ + int err = -ENXIO; + int i; + uint64_t val; + + /* If the CPU isn't a Geode GX or LX, abort */ + if (!is_geode()) + return -ENXIO; + + /* If it doesn't have the CS553[56], abort */ + rdmsrl(MSR_DIVIL_GLD_CAP, val); + val &= ~0xFFULL; + if (val != CAP_CS5535 && val != CAP_CS5536) + return -ENXIO; + + /* If it doesn't have the NAND controller enabled, abort */ + rdmsrl(MSR_DIVIL_BALL_OPTS, val); + if (val & 1) { + printk(KERN_INFO "CS553x NAND controller: Flash I/O not enabled in MSR_DIVIL_BALL_OPTS.\n"); + return -ENXIO; + } + + for (i = 0; i < NR_CS553X_CONTROLLERS; i++) { + rdmsrl(MSR_DIVIL_LBAR_FLSH0 + i, val); + + if ((val & (FLSH_LBAR_EN|FLSH_NOR_NAND)) == (FLSH_LBAR_EN|FLSH_NOR_NAND)) + err = cs553x_init_one(i, !!(val & FLSH_MEM_IO), val & 0xFFFFFFFF); + } + + /* Register all devices together here. This means we can easily hack it to + do mtdconcat etc. if we want to. */ + for (i = 0; i < NR_CS553X_CONTROLLERS; i++) { + if (cs553x_mtd[i]) { + add_mtd_device(cs553x_mtd[i]); + + /* If any devices registered, return success. Else the last error. */ + err = 0; + } + } + + return err; +} + +module_init(cs553x_init); + +static void __exit cs553x_cleanup(void) +{ + int i; + + for (i = 0; i < NR_CS553X_CONTROLLERS; i++) { + struct mtd_info *mtd = cs553x_mtd[i]; + struct nand_chip *this; + void __iomem *mmio_base; + + if (!mtd) + break; + + this = cs553x_mtd[i]->priv; + mmio_base = this->IO_ADDR_R; + + /* Release resources, unregister device */ + nand_release(cs553x_mtd[i]); + cs553x_mtd[i] = NULL; + + /* unmap physical adress */ + iounmap(mmio_base); + + /* Free the MTD device structure */ + kfree(mtd); + } +} + +module_exit(cs553x_cleanup); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); +MODULE_DESCRIPTION("NAND controller driver for AMD CS5535/CS5536 companion chip"); diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index ec5e45e4e4ef..6107f532855b 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -58,10 +58,10 @@ static unsigned long __initdata doc_locations[] = { 0xe4000000, #elif defined(CONFIG_MOMENCO_OCELOT) 0x2f000000, - 0xff000000, + 0xff000000, #elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C) - 0xff000000, -##else + 0xff000000, +#else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif 0xffffffff }; @@ -73,7 +73,7 @@ struct doc_priv { unsigned long physadr; u_char ChipID; u_char CDSNControl; - int chips_per_floor; /* The number of chips detected on each floor */ + int chips_per_floor; /* The number of chips detected on each floor */ int curfloor; int curchip; int mh0_page; @@ -84,6 +84,7 @@ struct doc_priv { /* This is the syndrome computed by the HW ecc generator upon reading an empty page, one with all 0xff for data and stored ecc code. */ static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a }; + /* This is the ecc value computed by the HW ecc generator upon writing an empty page, one with all 0xff for data. */ static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 }; @@ -94,28 +95,29 @@ static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 }; #define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil) #define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k) -static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd); +static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int bitmask); static void doc200x_select_chip(struct mtd_info *mtd, int chip); -static int debug=0; +static int debug = 0; module_param(debug, int, 0); -static int try_dword=1; +static int try_dword = 1; module_param(try_dword, int, 0); -static int no_ecc_failures=0; +static int no_ecc_failures = 0; module_param(no_ecc_failures, int, 0); -static int no_autopart=0; +static int no_autopart = 0; module_param(no_autopart, int, 0); -static int show_firmware_partition=0; +static int show_firmware_partition = 0; module_param(show_firmware_partition, int, 0); #ifdef MTD_NAND_DISKONCHIP_BBTWRITE -static int inftl_bbt_write=1; +static int inftl_bbt_write = 1; #else -static int inftl_bbt_write=0; +static int inftl_bbt_write = 0; #endif module_param(inftl_bbt_write, int, 0); @@ -123,7 +125,6 @@ static unsigned long doc_config_location = CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDR module_param(doc_config_location, ulong, 0); MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip"); - /* Sector size for HW ECC */ #define SECTOR_SIZE 512 /* The sector bytes are packed into NB_DATA 10 bit words */ @@ -147,7 +148,7 @@ static struct rs_control *rs_decoder; * some comments, improved a minor bit and converted it to make use * of the generic Reed-Solomon libary. tglx */ -static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) +static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc) { int i, j, nerr, errpos[8]; uint8_t parity; @@ -168,18 +169,18 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) * s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0] * where x = alpha^(FCR + i) */ - for(j = 1; j < NROOTS; j++) { - if(ds[j] == 0) + for (j = 1; j < NROOTS; j++) { + if (ds[j] == 0) continue; tmp = rs->index_of[ds[j]]; - for(i = 0; i < NROOTS; i++) + for (i = 0; i < NROOTS; i++) s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)]; } /* Calc s[i] = s[i] / alpha^(v + i) */ for (i = 0; i < NROOTS; i++) { if (syn[i]) - syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i)); + syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i)); } /* Call the decoder library */ nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval); @@ -193,7 +194,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) * but they are given by the design of the de/encoder circuit * in the DoC ASIC's. */ - for(i = 0;i < nerr; i++) { + for (i = 0; i < nerr; i++) { int index, bitpos, pos = 1015 - errpos[i]; uint8_t val; if (pos >= NB_DATA && pos < 1019) @@ -205,8 +206,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) can be modified since pos is even */ index = (pos >> 3) ^ 1; bitpos = pos & 7; - if ((index >= 0 && index < SECTOR_SIZE) || - index == (SECTOR_SIZE + 1)) { + if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) { val = (uint8_t) (errval[i] >> (2 + bitpos)); parity ^= val; if (index < SECTOR_SIZE) @@ -216,9 +216,8 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) bitpos = (bitpos + 10) & 7; if (bitpos == 0) bitpos = 8; - if ((index >= 0 && index < SECTOR_SIZE) || - index == (SECTOR_SIZE + 1)) { - val = (uint8_t)(errval[i] << (8 - bitpos)); + if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) { + val = (uint8_t) (errval[i] << (8 - bitpos)); parity ^= val; if (index < SECTOR_SIZE) data[index] ^= val; @@ -250,10 +249,11 @@ static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) /* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */ static int _DoC_WaitReady(struct doc_priv *doc) { - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; unsigned long timeo = jiffies + (HZ * 10); - if(debug) printk("_DoC_WaitReady...\n"); + if (debug) + printk("_DoC_WaitReady...\n"); /* Out-of-line routine to wait for chip response */ if (DoC_is_MillenniumPlus(doc)) { while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) { @@ -280,7 +280,7 @@ static int _DoC_WaitReady(struct doc_priv *doc) static inline int DoC_WaitReady(struct doc_priv *doc) { - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int ret = 0; if (DoC_is_MillenniumPlus(doc)) { @@ -298,7 +298,8 @@ static inline int DoC_WaitReady(struct doc_priv *doc) DoC_Delay(doc, 2); } - if(debug) printk("DoC_WaitReady OK\n"); + if (debug) + printk("DoC_WaitReady OK\n"); return ret; } @@ -306,9 +307,10 @@ static void doc2000_write_byte(struct mtd_info *mtd, u_char datum) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; - if(debug)printk("write_byte %02x\n", datum); + if (debug) + printk("write_byte %02x\n", datum); WriteDOC(datum, docptr, CDSNSlowIO); WriteDOC(datum, docptr, 2k_CDSN_IO); } @@ -317,77 +319,78 @@ static u_char doc2000_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; u_char ret; ReadDOC(docptr, CDSNSlowIO); DoC_Delay(doc, 2); ret = ReadDOC(docptr, 2k_CDSN_IO); - if (debug) printk("read_byte returns %02x\n", ret); + if (debug) + printk("read_byte returns %02x\n", ret); return ret; } -static void doc2000_writebuf(struct mtd_info *mtd, - const u_char *buf, int len) +static void doc2000_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - if (debug)printk("writebuf of %d bytes: ", len); - for (i=0; i < len; i++) { + if (debug) + printk("writebuf of %d bytes: ", len); + for (i = 0; i < len; i++) { WriteDOC_(buf[i], docptr, DoC_2k_CDSN_IO + i); if (debug && i < 16) printk("%02x ", buf[i]); } - if (debug) printk("\n"); + if (debug) + printk("\n"); } -static void doc2000_readbuf(struct mtd_info *mtd, - u_char *buf, int len) +static void doc2000_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; - int i; + void __iomem *docptr = doc->virtadr; + int i; - if (debug)printk("readbuf of %d bytes: ", len); + if (debug) + printk("readbuf of %d bytes: ", len); - for (i=0; i < len; i++) { + for (i = 0; i < len; i++) { buf[i] = ReadDOC(docptr, 2k_CDSN_IO + i); } } -static void doc2000_readbuf_dword(struct mtd_info *mtd, - u_char *buf, int len) +static void doc2000_readbuf_dword(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; - int i; + void __iomem *docptr = doc->virtadr; + int i; - if (debug) printk("readbuf_dword of %d bytes: ", len); + if (debug) + printk("readbuf_dword of %d bytes: ", len); - if (unlikely((((unsigned long)buf)|len) & 3)) { - for (i=0; i < len; i++) { - *(uint8_t *)(&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i); + if (unlikely((((unsigned long)buf) | len) & 3)) { + for (i = 0; i < len; i++) { + *(uint8_t *) (&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i); } } else { - for (i=0; i < len; i+=4) { - *(uint32_t*)(&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i); + for (i = 0; i < len; i += 4) { + *(uint32_t *) (&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i); } } } -static int doc2000_verifybuf(struct mtd_info *mtd, - const u_char *buf, int len) +static int doc2000_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - for (i=0; i < len; i++) + for (i = 0; i < len; i++) if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO)) return -EFAULT; return 0; @@ -400,12 +403,10 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr) uint16_t ret; doc200x_select_chip(mtd, nr); - doc200x_hwcontrol(mtd, NAND_CTL_SETCLE); - this->write_byte(mtd, NAND_CMD_READID); - doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE); - doc200x_hwcontrol(mtd, NAND_CTL_SETALE); - this->write_byte(mtd, 0); - doc200x_hwcontrol(mtd, NAND_CTL_CLRALE); + doc200x_hwcontrol(mtd, NAND_CMD_READID, + NAND_CTRL_CLE | NAND_CTRL_CHANGE); + doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE); + doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* We cant' use dev_ready here, but at least we wait for the * command to complete @@ -423,12 +424,11 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr) } ident; void __iomem *docptr = doc->virtadr; - doc200x_hwcontrol(mtd, NAND_CTL_SETCLE); - doc2000_write_byte(mtd, NAND_CMD_READID); - doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE); - doc200x_hwcontrol(mtd, NAND_CTL_SETALE); - doc2000_write_byte(mtd, 0); - doc200x_hwcontrol(mtd, NAND_CTL_CLRALE); + doc200x_hwcontrol(mtd, NAND_CMD_READID, + NAND_CTRL_CLE | NAND_CTRL_CHANGE); + doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE); + doc200x_hwcontrol(mtd, NAND_CMD_NONE, + NAND_NCE | NAND_CTRL_CHANGE); udelay(50); @@ -464,7 +464,7 @@ static void __init doc2000_count_chips(struct mtd_info *mtd) printk(KERN_DEBUG "Detected %d chips per floor.\n", i); } -static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state) +static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this) { struct doc_priv *doc = this->priv; @@ -482,7 +482,7 @@ static void doc2001_write_byte(struct mtd_info *mtd, u_char datum) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; WriteDOC(datum, docptr, CDSNSlowIO); WriteDOC(datum, docptr, Mil_CDSN_IO); @@ -493,7 +493,7 @@ static u_char doc2001_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; //ReadDOC(docptr, CDSNSlowIO); /* 11.4.5 -- delay twice to allow extended length cycle */ @@ -503,50 +503,47 @@ static u_char doc2001_read_byte(struct mtd_info *mtd) return ReadDOC(docptr, LastDataRead); } -static void doc2001_writebuf(struct mtd_info *mtd, - const u_char *buf, int len) +static void doc2001_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - for (i=0; i < len; i++) + for (i = 0; i < len; i++) WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i); /* Terminate write pipeline */ WriteDOC(0x00, docptr, WritePipeTerm); } -static void doc2001_readbuf(struct mtd_info *mtd, - u_char *buf, int len) +static void doc2001_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; /* Start read pipeline */ ReadDOC(docptr, ReadPipeInit); - for (i=0; i < len-1; i++) + for (i = 0; i < len - 1; i++) buf[i] = ReadDOC(docptr, Mil_CDSN_IO + (i & 0xff)); /* Terminate read pipeline */ buf[i] = ReadDOC(docptr, LastDataRead); } -static int doc2001_verifybuf(struct mtd_info *mtd, - const u_char *buf, int len) +static int doc2001_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; /* Start read pipeline */ ReadDOC(docptr, ReadPipeInit); - for (i=0; i < len-1; i++) + for (i = 0; i < len - 1; i++) if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) { ReadDOC(docptr, LastDataRead); return i; @@ -560,87 +557,90 @@ static u_char doc2001plus_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; u_char ret; - ReadDOC(docptr, Mplus_ReadPipeInit); - ReadDOC(docptr, Mplus_ReadPipeInit); - ret = ReadDOC(docptr, Mplus_LastDataRead); - if (debug) printk("read_byte returns %02x\n", ret); + ReadDOC(docptr, Mplus_ReadPipeInit); + ReadDOC(docptr, Mplus_ReadPipeInit); + ret = ReadDOC(docptr, Mplus_LastDataRead); + if (debug) + printk("read_byte returns %02x\n", ret); return ret; } -static void doc2001plus_writebuf(struct mtd_info *mtd, - const u_char *buf, int len) +static void doc2001plus_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - if (debug)printk("writebuf of %d bytes: ", len); - for (i=0; i < len; i++) { + if (debug) + printk("writebuf of %d bytes: ", len); + for (i = 0; i < len; i++) { WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i); if (debug && i < 16) printk("%02x ", buf[i]); } - if (debug) printk("\n"); + if (debug) + printk("\n"); } -static void doc2001plus_readbuf(struct mtd_info *mtd, - u_char *buf, int len) +static void doc2001plus_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - if (debug)printk("readbuf of %d bytes: ", len); + if (debug) + printk("readbuf of %d bytes: ", len); /* Start read pipeline */ ReadDOC(docptr, Mplus_ReadPipeInit); ReadDOC(docptr, Mplus_ReadPipeInit); - for (i=0; i < len-2; i++) { + for (i = 0; i < len - 2; i++) { buf[i] = ReadDOC(docptr, Mil_CDSN_IO); if (debug && i < 16) printk("%02x ", buf[i]); } /* Terminate read pipeline */ - buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead); + buf[len - 2] = ReadDOC(docptr, Mplus_LastDataRead); if (debug && i < 16) - printk("%02x ", buf[len-2]); - buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead); + printk("%02x ", buf[len - 2]); + buf[len - 1] = ReadDOC(docptr, Mplus_LastDataRead); if (debug && i < 16) - printk("%02x ", buf[len-1]); - if (debug) printk("\n"); + printk("%02x ", buf[len - 1]); + if (debug) + printk("\n"); } -static int doc2001plus_verifybuf(struct mtd_info *mtd, - const u_char *buf, int len) +static int doc2001plus_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; - if (debug)printk("verifybuf of %d bytes: ", len); + if (debug) + printk("verifybuf of %d bytes: ", len); /* Start read pipeline */ ReadDOC(docptr, Mplus_ReadPipeInit); ReadDOC(docptr, Mplus_ReadPipeInit); - for (i=0; i < len-2; i++) + for (i = 0; i < len - 2; i++) if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) { ReadDOC(docptr, Mplus_LastDataRead); ReadDOC(docptr, Mplus_LastDataRead); return i; } - if (buf[len-2] != ReadDOC(docptr, Mplus_LastDataRead)) - return len-2; - if (buf[len-1] != ReadDOC(docptr, Mplus_LastDataRead)) - return len-1; + if (buf[len - 2] != ReadDOC(docptr, Mplus_LastDataRead)) + return len - 2; + if (buf[len - 1] != ReadDOC(docptr, Mplus_LastDataRead)) + return len - 1; return 0; } @@ -648,10 +648,11 @@ static void doc2001plus_select_chip(struct mtd_info *mtd, int chip) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int floor = 0; - if(debug)printk("select chip (%d)\n", chip); + if (debug) + printk("select chip (%d)\n", chip); if (chip == -1) { /* Disable flash internally */ @@ -660,7 +661,7 @@ static void doc2001plus_select_chip(struct mtd_info *mtd, int chip) } floor = chip / doc->chips_per_floor; - chip -= (floor * doc->chips_per_floor); + chip -= (floor * doc->chips_per_floor); /* Assert ChipEnable and deassert WriteProtect */ WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect); @@ -674,72 +675,61 @@ static void doc200x_select_chip(struct mtd_info *mtd, int chip) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int floor = 0; - if(debug)printk("select chip (%d)\n", chip); + if (debug) + printk("select chip (%d)\n", chip); if (chip == -1) return; floor = chip / doc->chips_per_floor; - chip -= (floor * doc->chips_per_floor); + chip -= (floor * doc->chips_per_floor); /* 11.4.4 -- deassert CE before changing chip */ - doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE); + doc200x_hwcontrol(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE); WriteDOC(floor, docptr, FloorSelect); WriteDOC(chip, docptr, CDSNDeviceSelect); - doc200x_hwcontrol(mtd, NAND_CTL_SETNCE); + doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); doc->curchip = chip; doc->curfloor = floor; } -static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd) +#define CDSN_CTRL_MSK (CDSN_CTRL_CE | CDSN_CTRL_CLE | CDSN_CTRL_ALE) + +static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; - switch(cmd) { - case NAND_CTL_SETNCE: - doc->CDSNControl |= CDSN_CTRL_CE; - break; - case NAND_CTL_CLRNCE: - doc->CDSNControl &= ~CDSN_CTRL_CE; - break; - case NAND_CTL_SETCLE: - doc->CDSNControl |= CDSN_CTRL_CLE; - break; - case NAND_CTL_CLRCLE: - doc->CDSNControl &= ~CDSN_CTRL_CLE; - break; - case NAND_CTL_SETALE: - doc->CDSNControl |= CDSN_CTRL_ALE; - break; - case NAND_CTL_CLRALE: - doc->CDSNControl &= ~CDSN_CTRL_ALE; - break; - case NAND_CTL_SETWP: - doc->CDSNControl |= CDSN_CTRL_WP; - break; - case NAND_CTL_CLRWP: - doc->CDSNControl &= ~CDSN_CTRL_WP; - break; + if (ctrl & NAND_CTRL_CHANGE) { + doc->CDSNControl &= ~CDSN_CTRL_MSK; + doc->CDSNControl |= ctrl & CDSN_CTRL_MSK; + if (debug) + printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl); + WriteDOC(doc->CDSNControl, docptr, CDSNControl); + /* 11.4.3 -- 4 NOPs after CSDNControl write */ + DoC_Delay(doc, 4); + } + if (cmd != NAND_CMD_NONE) { + if (DoC_is_2000(doc)) + doc2000_write_byte(mtd, cmd); + else + doc2001_write_byte(mtd, cmd); } - if (debug)printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl); - WriteDOC(doc->CDSNControl, docptr, CDSNControl); - /* 11.4.3 -- 4 NOPs after CSDNControl write */ - DoC_Delay(doc, 4); } -static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) +static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int column, int page_addr) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* * Must terminate write pipeline before sending any commands @@ -756,9 +746,9 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col if (command == NAND_CMD_SEQIN) { int readcmd; - if (column >= mtd->oobblock) { + if (column >= mtd->writesize) { /* OOB area */ - column -= mtd->oobblock; + column -= mtd->writesize; readcmd = NAND_CMD_READOOB; } else if (column < 256) { /* First 256 bytes --> READ0 */ @@ -782,25 +772,26 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col WriteDOC(column, docptr, Mplus_FlashAddress); } if (page_addr != -1) { - WriteDOC((unsigned char) (page_addr & 0xff), docptr, Mplus_FlashAddress); - WriteDOC((unsigned char) ((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress); + WriteDOC((unsigned char)(page_addr & 0xff), docptr, Mplus_FlashAddress); + WriteDOC((unsigned char)((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress); /* One more address cycle for higher density devices */ if (this->chipsize & 0x0c000000) { - WriteDOC((unsigned char) ((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress); + WriteDOC((unsigned char)((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress); printk("high density\n"); } } WriteDOC(0, docptr, Mplus_WritePipeTerm); WriteDOC(0, docptr, Mplus_WritePipeTerm); /* deassert ALE */ - if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || command == NAND_CMD_READOOB || command == NAND_CMD_READID) + if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || + command == NAND_CMD_READOOB || command == NAND_CMD_READID) WriteDOC(0, docptr, Mplus_FlashControl); } /* * program and erase have their own busy handlers * status and sequential in needs no delay - */ + */ switch (command) { case NAND_CMD_PAGEPROG: @@ -817,55 +808,57 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd); WriteDOC(0, docptr, Mplus_WritePipeTerm); WriteDOC(0, docptr, Mplus_WritePipeTerm); - while ( !(this->read_byte(mtd) & 0x40)); + while (!(this->read_byte(mtd) & 0x40)) ; return; - /* This applies to read commands */ + /* This applies to read commands */ default: /* * If we don't have access to the busy pin, we apply the given * command delay - */ + */ if (!this->dev_ready) { - udelay (this->chip_delay); + udelay(this->chip_delay); return; } } /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ - ndelay (100); + ndelay(100); /* wait until command is processed */ - while (!this->dev_ready(mtd)); + while (!this->dev_ready(mtd)) ; } static int doc200x_dev_ready(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; if (DoC_is_MillenniumPlus(doc)) { /* 11.4.2 -- must NOP four times before checking FR/B# */ DoC_Delay(doc, 4); if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) { - if(debug) + if (debug) printk("not ready\n"); return 0; } - if (debug)printk("was ready\n"); + if (debug) + printk("was ready\n"); return 1; } else { /* 11.4.2 -- must NOP four times before checking FR/B# */ DoC_Delay(doc, 4); if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) { - if(debug) + if (debug) printk("not ready\n"); return 0; } /* 11.4.2 -- Must NOP twice if it's ready */ DoC_Delay(doc, 2); - if (debug)printk("was ready\n"); + if (debug) + printk("was ready\n"); return 1; } } @@ -881,10 +874,10 @@ static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* Prime the ECC engine */ - switch(mode) { + switch (mode) { case NAND_ECC_READ: WriteDOC(DOC_ECC_RESET, docptr, ECCConf); WriteDOC(DOC_ECC_EN, docptr, ECCConf); @@ -900,10 +893,10 @@ static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* Prime the ECC engine */ - switch(mode) { + switch (mode) { case NAND_ECC_READ: WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf); WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf); @@ -916,12 +909,11 @@ static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode) } /* This code is only called on write */ -static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, - unsigned char *ecc_code) +static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, unsigned char *ecc_code) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; int emptymatch = 1; @@ -961,7 +953,8 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, often. It could be optimized away by examining the data in the writebuf routine, and remembering the result. */ for (i = 0; i < 512; i++) { - if (dat[i] == 0xff) continue; + if (dat[i] == 0xff) + continue; emptymatch = 0; break; } @@ -969,17 +962,20 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, /* If emptymatch still =1, we do have an all-0xff data buffer. Return all-0xff ecc value instead of the computed one, so it'll look just like a freshly-erased page. */ - if (emptymatch) memset(ecc_code, 0xff, 6); + if (emptymatch) + memset(ecc_code, 0xff, 6); #endif return 0; } -static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) +static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *isnull) { int i, ret = 0; struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; + uint8_t calc_ecc[6]; volatile u_char dummy; int emptymatch = 1; @@ -1012,18 +1008,20 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ all-0xff data and stored ecc block. Check the stored ecc. */ if (emptymatch) { for (i = 0; i < 6; i++) { - if (read_ecc[i] == 0xff) continue; + if (read_ecc[i] == 0xff) + continue; emptymatch = 0; break; } } /* If emptymatch still =1, check the data block. */ if (emptymatch) { - /* Note: this somewhat expensive test should not be triggered - often. It could be optimized away by examining the data in - the readbuf routine, and remembering the result. */ + /* Note: this somewhat expensive test should not be triggered + often. It could be optimized away by examining the data in + the readbuf routine, and remembering the result. */ for (i = 0; i < 512; i++) { - if (dat[i] == 0xff) continue; + if (dat[i] == 0xff) + continue; emptymatch = 0; break; } @@ -1032,7 +1030,8 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ erased block, in which case the ECC will not come out right. We'll suppress the error and tell the caller everything's OK. Because it is. */ - if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc); + if (!emptymatch) + ret = doc_ecc_decode(rs_decoder, dat, calc_ecc); if (ret > 0) printk(KERN_ERR "doc200x_correct_data corrected %d errors\n", ret); } @@ -1059,11 +1058,10 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ * safer. The only problem with it is that any code that parses oobfree must * be able to handle out-of-order segments. */ -static struct nand_oobinfo doc200x_oobinfo = { - .useecc = MTD_NANDECC_AUTOPLACE, - .eccbytes = 6, - .eccpos = {0, 1, 2, 3, 4, 5}, - .oobfree = { {8, 8}, {6, 2} } +static struct nand_ecclayout doc200x_oobinfo = { + .eccbytes = 6, + .eccpos = {0, 1, 2, 3, 4, 5}, + .oobfree = {{8, 8}, {6, 2}} }; /* Find the (I)NFTL Media Header, and optionally also the mirror media header. @@ -1072,8 +1070,7 @@ static struct nand_oobinfo doc200x_oobinfo = { either "ANAND" or "BNAND". If findmirror=1, also look for the mirror media header. The page #s of the found media headers are placed in mh0_page and mh1_page in the DOC private structure. */ -static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, - const char *id, int findmirror) +static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const char *id, int findmirror) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; @@ -1082,17 +1079,19 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, size_t retlen; for (offs = 0; offs < mtd->size; offs += mtd->erasesize) { - ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf); - if (retlen != mtd->oobblock) continue; + ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf); + if (retlen != mtd->writesize) + continue; if (ret) { - printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", - offs); + printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", offs); } - if (memcmp(buf, id, 6)) continue; + if (memcmp(buf, id, 6)) + continue; printk(KERN_INFO "Found DiskOnChip %s Media Header at 0x%x\n", id, offs); if (doc->mh0_page == -1) { doc->mh0_page = offs >> this->page_shift; - if (!findmirror) return 1; + if (!findmirror) + return 1; continue; } doc->mh1_page = offs >> this->page_shift; @@ -1105,8 +1104,8 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, /* Only one mediaheader was found. We want buf to contain a mediaheader on return, so we'll have to re-read the one we found. */ offs = doc->mh0_page << this->page_shift; - ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf); - if (retlen != mtd->oobblock) { + ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf); + if (retlen != mtd->writesize) { /* Insanity. Give up. */ printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n"); return 0; @@ -1114,8 +1113,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, return 1; } -static inline int __init nftl_partscan(struct mtd_info *mtd, - struct mtd_partition *parts) +static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; @@ -1127,13 +1125,14 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, unsigned blocks, maxblocks; int offs, numheaders; - buf = kmalloc(mtd->oobblock, GFP_KERNEL); + buf = kmalloc(mtd->writesize, GFP_KERNEL); if (!buf) { printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n"); return 0; } - if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out; - mh = (struct NFTLMediaHeader *) buf; + if (!(numheaders = find_media_headers(mtd, buf, "ANAND", 1))) + goto out; + mh = (struct NFTLMediaHeader *)buf; mh->NumEraseUnits = le16_to_cpu(mh->NumEraseUnits); mh->FirstPhysicalEUN = le16_to_cpu(mh->FirstPhysicalEUN); @@ -1155,8 +1154,8 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, /* Auto-determine UnitSizeFactor. The constraints are: - There can be at most 32768 virtual blocks. - There can be at most (virtual block size - page size) - virtual blocks (because MediaHeader+BBT must fit in 1). - */ + virtual blocks (because MediaHeader+BBT must fit in 1). + */ mh->UnitSizeFactor = 0xff; while (blocks > maxblocks) { blocks >>= 1; @@ -1211,14 +1210,13 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, } ret = numparts; -out: + out: kfree(buf); return ret; } /* This is a stripped-down copy of the code in inftlmount.c */ -static inline int __init inftl_partscan(struct mtd_info *mtd, - struct mtd_partition *parts) +static inline int __init inftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; @@ -1235,15 +1233,16 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, if (inftl_bbt_write) end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift); - buf = kmalloc(mtd->oobblock, GFP_KERNEL); + buf = kmalloc(mtd->writesize, GFP_KERNEL); if (!buf) { printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n"); return 0; } - if (!find_media_headers(mtd, buf, "BNAND", 0)) goto out; + if (!find_media_headers(mtd, buf, "BNAND", 0)) + goto out; doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift); - mh = (struct INFTLMediaHeader *) buf; + mh = (struct INFTLMediaHeader *)buf; mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks); mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions); @@ -1319,8 +1318,10 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, parts[numparts].offset = ip->firstUnit << vshift; parts[numparts].size = (1 + ip->lastUnit - ip->firstUnit) << vshift; numparts++; - if (ip->lastUnit > lastvunit) lastvunit = ip->lastUnit; - if (ip->flags & INFTL_LAST) break; + if (ip->lastUnit > lastvunit) + lastvunit = ip->lastUnit; + if (ip->flags & INFTL_LAST) + break; } lastvunit++; if ((lastvunit << vshift) < end) { @@ -1330,7 +1331,7 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, numparts++; } ret = numparts; -out: + out: kfree(buf); return ret; } @@ -1342,11 +1343,12 @@ static int __init nftl_scan_bbt(struct mtd_info *mtd) struct doc_priv *doc = this->priv; struct mtd_partition parts[2]; - memset((char *) parts, 0, sizeof(parts)); + memset((char *)parts, 0, sizeof(parts)); /* On NFTL, we have to find the media headers before we can read the BBTs, since they're stored in the media header eraseblocks. */ numparts = nftl_partscan(mtd, parts); - if (!numparts) return -EIO; + if (!numparts) + return -EIO; this->bbt_td->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT | NAND_BBT_SAVECONTENT | NAND_BBT_WRITE | NAND_BBT_VERSION; @@ -1393,8 +1395,7 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd) this->bbt_td->pages[0] = 2; this->bbt_md = NULL; } else { - this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | - NAND_BBT_VERSION; + this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION; if (inftl_bbt_write) this->bbt_td->options |= NAND_BBT_WRITE; this->bbt_td->offs = 8; @@ -1404,8 +1405,7 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd) this->bbt_td->reserved_block_code = 0x01; this->bbt_td->pattern = "MSYS_BBT"; - this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | - NAND_BBT_VERSION; + this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION; if (inftl_bbt_write) this->bbt_md->options |= NAND_BBT_WRITE; this->bbt_md->offs = 8; @@ -1420,12 +1420,13 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd) At least as nand_bbt.c is currently written. */ if ((ret = nand_scan_bbt(mtd, NULL))) return ret; - memset((char *) parts, 0, sizeof(parts)); + memset((char *)parts, 0, sizeof(parts)); numparts = inftl_partscan(mtd, parts); /* At least for now, require the INFTL Media Header. We could probably do without it for non-INFTL use, since all it gives us is autopartitioning, but I want to give it more thought. */ - if (!numparts) return -EIO; + if (!numparts) + return -EIO; add_mtd_device(mtd); #ifdef CONFIG_MTD_PARTITIONS if (!no_autopart) @@ -1439,7 +1440,6 @@ static inline int __init doc2000_init(struct mtd_info *mtd) struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - this->write_byte = doc2000_write_byte; this->read_byte = doc2000_read_byte; this->write_buf = doc2000_writebuf; this->read_buf = doc2000_readbuf; @@ -1457,7 +1457,6 @@ static inline int __init doc2001_init(struct mtd_info *mtd) struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - this->write_byte = doc2001_write_byte; this->read_byte = doc2001_read_byte; this->write_buf = doc2001_writebuf; this->read_buf = doc2001_readbuf; @@ -1489,16 +1488,15 @@ static inline int __init doc2001plus_init(struct mtd_info *mtd) struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - this->write_byte = NULL; this->read_byte = doc2001plus_read_byte; this->write_buf = doc2001plus_writebuf; this->read_buf = doc2001plus_readbuf; this->verify_buf = doc2001plus_verifybuf; this->scan_bbt = inftl_scan_bbt; - this->hwcontrol = NULL; + this->cmd_ctrl = NULL; this->select_chip = doc2001plus_select_chip; this->cmdfunc = doc2001plus_command; - this->enable_hwecc = doc2001plus_enable_hwecc; + this->ecc.hwctl = doc2001plus_enable_hwecc; doc->chips_per_floor = 1; mtd->name = "DiskOnChip Millennium Plus"; @@ -1535,20 +1533,16 @@ static int __init doc_probe(unsigned long physadr) save_control = ReadDOC(virtadr, DOCControl); /* Reset the DiskOnChip ASIC */ - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, - virtadr, DOCControl); - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, - virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl); /* Enable the DiskOnChip ASIC */ - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, - virtadr, DOCControl); - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, - virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl); ChipID = ReadDOC(virtadr, ChipID); - switch(ChipID) { + switch (ChipID) { case DOC_ChipID_Doc2k: reg = DoC_2k_ECCStatus; break; @@ -1564,15 +1558,13 @@ static int __init doc_probe(unsigned long physadr) ReadDOC(virtadr, Mplus_Power); /* Reset the Millennium Plus ASIC */ - tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | - DOC_MODE_BDECT; + tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT; WriteDOC(tmp, virtadr, Mplus_DOCControl); WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm); mdelay(1); /* Enable the Millennium Plus ASIC */ - tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | - DOC_MODE_BDECT; + tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT; WriteDOC(tmp, virtadr, Mplus_DOCControl); WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm); mdelay(1); @@ -1596,7 +1588,7 @@ static int __init doc_probe(unsigned long physadr) goto notfound; } /* Check the TOGGLE bit in the ECC register */ - tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; + tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; tmpb = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; tmpc = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; if ((tmp == tmpb) || (tmp != tmpc)) { @@ -1626,11 +1618,11 @@ static int __init doc_probe(unsigned long physadr) if (ChipID == DOC_ChipID_DocMilPlus16) { WriteDOC(~newval, virtadr, Mplus_AliasResolution); oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution); - WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it + WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it } else { WriteDOC(~newval, virtadr, AliasResolution); oldval = ReadDOC(doc->virtadr, AliasResolution); - WriteDOC(newval, virtadr, AliasResolution); // restore it + WriteDOC(newval, virtadr, AliasResolution); // restore it } newval = ~newval; if (oldval == newval) { @@ -1642,10 +1634,8 @@ static int __init doc_probe(unsigned long physadr) printk(KERN_NOTICE "DiskOnChip found at 0x%lx\n", physadr); len = sizeof(struct mtd_info) + - sizeof(struct nand_chip) + - sizeof(struct doc_priv) + - (2 * sizeof(struct nand_bbt_descr)); - mtd = kmalloc(len, GFP_KERNEL); + sizeof(struct nand_chip) + sizeof(struct doc_priv) + (2 * sizeof(struct nand_bbt_descr)); + mtd = kmalloc(len, GFP_KERNEL); if (!mtd) { printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len); ret = -ENOMEM; @@ -1663,17 +1653,19 @@ static int __init doc_probe(unsigned long physadr) nand->priv = doc; nand->select_chip = doc200x_select_chip; - nand->hwcontrol = doc200x_hwcontrol; + nand->cmd_ctrl = doc200x_hwcontrol; nand->dev_ready = doc200x_dev_ready; nand->waitfunc = doc200x_wait; nand->block_bad = doc200x_block_bad; - nand->enable_hwecc = doc200x_enable_hwecc; - nand->calculate_ecc = doc200x_calculate_ecc; - nand->correct_data = doc200x_correct_data; + nand->ecc.hwctl = doc200x_enable_hwecc; + nand->ecc.calculate = doc200x_calculate_ecc; + nand->ecc.correct = doc200x_correct_data; - nand->autooob = &doc200x_oobinfo; - nand->eccmode = NAND_ECC_HW6_512; - nand->options = NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME; + nand->ecc.layout = &doc200x_oobinfo; + nand->ecc.mode = NAND_ECC_HW_SYNDROME; + nand->ecc.size = 512; + nand->ecc.bytes = 6; + nand->options = NAND_USE_FLASH_BBT; doc->physadr = physadr; doc->virtadr = virtadr; @@ -1707,18 +1699,18 @@ static int __init doc_probe(unsigned long physadr) doclist = mtd; return 0; -notfound: + notfound: /* Put back the contents of the DOCControl register, in case it's not actually a DiskOnChip. */ WriteDOC(save_control, virtadr, DOCControl); -fail: + fail: iounmap(virtadr); return ret; } static void release_nanddoc(void) { - struct mtd_info *mtd, *nextmtd; + struct mtd_info *mtd, *nextmtd; struct nand_chip *nand; struct doc_priv *doc; @@ -1747,8 +1739,8 @@ static int __init init_nanddoc(void) * generator polinomial degree = 4 */ rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS); - if (!rs_decoder) { - printk (KERN_ERR "DiskOnChip: Could not create a RS decoder\n"); + if (!rs_decoder) { + printk(KERN_ERR "DiskOnChip: Could not create a RS decoder\n"); return -ENOMEM; } @@ -1758,7 +1750,7 @@ static int __init init_nanddoc(void) if (ret < 0) goto outerr; } else { - for (i=0; (doc_locations[i] != 0xffffffff); i++) { + for (i = 0; (doc_locations[i] != 0xffffffff); i++) { doc_probe(doc_locations[i]); } } @@ -1770,7 +1762,7 @@ static int __init init_nanddoc(void) goto outerr; } return 0; -outerr: + outerr: free_rs(rs_decoder); return ret; } diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c index 9b1fd2f387fa..516c0e5e564c 100644 --- a/drivers/mtd/nand/edb7312.c +++ b/drivers/mtd/nand/edb7312.c @@ -1,7 +1,7 @@ /* * drivers/mtd/nand/edb7312.c * - * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) + * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) * * Derived from drivers/mtd/nand/autcpu12.c * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) @@ -25,7 +25,7 @@ #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> #include <asm/io.h> -#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */ +#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */ #include <asm/sizes.h> #include <asm/hardware/clps7111.h> @@ -54,51 +54,45 @@ static struct mtd_info *ep7312_mtd = NULL; */ static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE; -static void __iomem * ep7312_pxdr = (void __iomem *) EP7312_PXDR; -static void __iomem * ep7312_pxddr = (void __iomem *) EP7312_PXDDR; +static void __iomem *ep7312_pxdr = (void __iomem *)EP7312_PXDR; +static void __iomem *ep7312_pxddr = (void __iomem *)EP7312_PXDDR; #ifdef CONFIG_MTD_PARTITIONS /* * Define static partitions for flash device */ static struct mtd_partition partition_info[] = { - { .name = "EP7312 Nand Flash", - .offset = 0, - .size = 8*1024*1024 } + {.name = "EP7312 Nand Flash", + .offset = 0, + .size = 8 * 1024 * 1024} }; + #define NUM_PARTITIONS 1 #endif - /* * hardware specific access to control-lines + * + * NAND_NCE: bit 0 -> bit 7 + * NAND_CLE: bit 1 -> bit 4 + * NAND_ALE: bit 2 -> bit 5 */ -static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd) +static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { - switch(cmd) { - - case NAND_CTL_SETCLE: - clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr); - break; - case NAND_CTL_CLRCLE: - clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr); - break; - - case NAND_CTL_SETALE: - clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr); - break; - case NAND_CTL_CLRALE: - clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr); - break; - - case NAND_CTL_SETNCE: - clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr); - break; - case NAND_CTL_CLRNCE: - clps_writeb((clps_readb(ep7312_pxdr) | 0x80) | 0x40, ep7312_pxdr); - break; + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned char bits; + + bits = (ctrl & (NAND_CLE | NAND_ALE)) << 3; + bits = (ctrl & NAND_NCE) << 7; + + clps_writeb((clps_readb(ep7312_pxdr) & 0xB0) | 0x10, + ep7312_pxdr); } + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } /* @@ -108,6 +102,7 @@ static int ep7312_device_ready(struct mtd_info *mtd) { return 1; } + #ifdef CONFIG_MTD_PARTITIONS const char *part_probes[] = { "cmdlinepart", NULL }; #endif @@ -115,18 +110,16 @@ const char *part_probes[] = { "cmdlinepart", NULL }; /* * Main initialization routine */ -static int __init ep7312_init (void) +static int __init ep7312_init(void) { struct nand_chip *this; const char *part_type = 0; int mtd_parts_nb = 0; struct mtd_partition *mtd_parts = 0; - void __iomem * ep7312_fio_base; + void __iomem *ep7312_fio_base; /* Allocate memory for MTD device structure and private data */ - ep7312_mtd = kmalloc(sizeof(struct mtd_info) + - sizeof(struct nand_chip), - GFP_KERNEL); + ep7312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!ep7312_mtd) { printk("Unable to allocate EDB7312 NAND MTD device structure.\n"); return -ENOMEM; @@ -134,21 +127,22 @@ static int __init ep7312_init (void) /* map physical adress */ ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K); - if(!ep7312_fio_base) { + if (!ep7312_fio_base) { printk("ioremap EDB7312 NAND flash failed\n"); kfree(ep7312_mtd); return -EIO; } /* Get pointer to private data */ - this = (struct nand_chip *) (&ep7312_mtd[1]); + this = (struct nand_chip *)(&ep7312_mtd[1]); /* Initialize structures */ - memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(ep7312_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ ep7312_mtd->priv = this; + ep7312_mtd->owner = THIS_MODULE; /* * Set GPIO Port B control register so that the pins are configured @@ -159,22 +153,20 @@ static int __init ep7312_init (void) /* insert callbacks */ this->IO_ADDR_R = ep7312_fio_base; this->IO_ADDR_W = ep7312_fio_base; - this->hwcontrol = ep7312_hwcontrol; + this->cmd_ctrl = ep7312_hwcontrol; this->dev_ready = ep7312_device_ready; /* 15 us command delay time */ this->chip_delay = 15; /* Scan to find existence of the device */ - if (nand_scan (ep7312_mtd, 1)) { + if (nand_scan(ep7312_mtd, 1)) { iounmap((void *)ep7312_fio_base); - kfree (ep7312_mtd); + kfree(ep7312_mtd); return -ENXIO; } - #ifdef CONFIG_MTD_PARTITIONS ep7312_mtd->name = "edb7312-nand"; - mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, - &mtd_parts, 0); + mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; else @@ -193,24 +185,23 @@ static int __init ep7312_init (void) /* Return happy */ return 0; } + module_init(ep7312_init); /* * Clean up routine */ -static void __exit ep7312_cleanup (void) +static void __exit ep7312_cleanup(void) { - struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1]; + struct nand_chip *this = (struct nand_chip *)&ep7312_mtd[1]; /* Release resources, unregister device */ - nand_release (ap7312_mtd); - - /* Free internal data buffer */ - kfree (this->data_buf); + nand_release(ap7312_mtd); /* Free the MTD device structure */ - kfree (ep7312_mtd); + kfree(ep7312_mtd); } + module_exit(ep7312_cleanup); MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c index f68f7a99a630..2d585d2d090c 100644 --- a/drivers/mtd/nand/h1910.c +++ b/drivers/mtd/nand/h1910.c @@ -4,7 +4,7 @@ * Copyright (C) 2003 Joshua Wise (joshua@joshuawise.com) * * Derived from drivers/mtd/nand/edb7312.c - * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) + * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) * * $Id: h1910.c,v 1.6 2005/11/07 11:14:30 gleixner Exp $ @@ -26,7 +26,7 @@ #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> #include <asm/io.h> -#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */ +#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */ #include <asm/sizes.h> #include <asm/arch/h1900-gpio.h> #include <asm/arch/ipaq.h> @@ -45,47 +45,29 @@ static struct mtd_info *h1910_nand_mtd = NULL; * Define static partitions for flash device */ static struct mtd_partition partition_info[] = { - { name: "h1910 NAND Flash", - offset: 0, - size: 16*1024*1024 } + {name:"h1910 NAND Flash", + offset:0, + size:16 * 1024 * 1024} }; + #define NUM_PARTITIONS 1 #endif - /* * hardware specific access to control-lines + * + * NAND_NCE: bit 0 - don't care + * NAND_CLE: bit 1 - address bit 2 + * NAND_ALE: bit 2 - address bit 3 */ -static void h1910_hwcontrol(struct mtd_info *mtd, int cmd) +static void h1910_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { - struct nand_chip* this = (struct nand_chip *) (mtd->priv); - - switch(cmd) { - - case NAND_CTL_SETCLE: - this->IO_ADDR_R |= (1 << 2); - this->IO_ADDR_W |= (1 << 2); - break; - case NAND_CTL_CLRCLE: - this->IO_ADDR_R &= ~(1 << 2); - this->IO_ADDR_W &= ~(1 << 2); - break; - - case NAND_CTL_SETALE: - this->IO_ADDR_R |= (1 << 3); - this->IO_ADDR_W |= (1 << 3); - break; - case NAND_CTL_CLRALE: - this->IO_ADDR_R &= ~(1 << 3); - this->IO_ADDR_W &= ~(1 << 3); - break; - - case NAND_CTL_SETNCE: - break; - case NAND_CTL_CLRNCE: - break; - } + struct nand_chip *chip = mtd->priv; + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1)); } /* @@ -101,7 +83,7 @@ static int h1910_device_ready(struct mtd_info *mtd) /* * Main initialization routine */ -static int __init h1910_init (void) +static int __init h1910_init(void) { struct nand_chip *this; const char *part_type = 0; @@ -119,24 +101,23 @@ static int __init h1910_init (void) } /* Allocate memory for MTD device structure and private data */ - h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + - sizeof(struct nand_chip), - GFP_KERNEL); + h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!h1910_nand_mtd) { printk("Unable to allocate h1910 NAND MTD device structure.\n"); - iounmap ((void *) nandaddr); + iounmap((void *)nandaddr); return -ENOMEM; } /* Get pointer to private data */ - this = (struct nand_chip *) (&h1910_nand_mtd[1]); + this = (struct nand_chip *)(&h1910_nand_mtd[1]); /* Initialize structures */ - memset((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(h1910_nand_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ h1910_nand_mtd->priv = this; + h1910_nand_mtd->owner = THIS_MODULE; /* * Enable VPEN @@ -146,31 +127,28 @@ static int __init h1910_init (void) /* insert callbacks */ this->IO_ADDR_R = nandaddr; this->IO_ADDR_W = nandaddr; - this->hwcontrol = h1910_hwcontrol; + this->cmd_ctrl = h1910_hwcontrol; this->dev_ready = NULL; /* unknown whether that was correct or not so we will just do it like this */ /* 15 us command delay time */ this->chip_delay = 50; - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; this->options = NAND_NO_AUTOINCR; /* Scan to find existence of the device */ - if (nand_scan (h1910_nand_mtd, 1)) { + if (nand_scan(h1910_nand_mtd, 1)) { printk(KERN_NOTICE "No NAND device - returning -ENXIO\n"); - kfree (h1910_nand_mtd); - iounmap ((void *) nandaddr); + kfree(h1910_nand_mtd); + iounmap((void *)nandaddr); return -ENXIO; } - #ifdef CONFIG_MTD_CMDLINE_PARTS - mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts, - "h1910-nand"); + mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts, "h1910-nand"); if (mtd_parts_nb > 0) - part_type = "command line"; + part_type = "command line"; else - mtd_parts_nb = 0; + mtd_parts_nb = 0; #endif - if (mtd_parts_nb == 0) - { + if (mtd_parts_nb == 0) { mtd_parts = partition_info; mtd_parts_nb = NUM_PARTITIONS; part_type = "static"; @@ -183,24 +161,26 @@ static int __init h1910_init (void) /* Return happy */ return 0; } + module_init(h1910_init); /* * Clean up routine */ -static void __exit h1910_cleanup (void) +static void __exit h1910_cleanup(void) { - struct nand_chip *this = (struct nand_chip *) &h1910_nand_mtd[1]; + struct nand_chip *this = (struct nand_chip *)&h1910_nand_mtd[1]; /* Release resources, unregister device */ - nand_release (h1910_nand_mtd); + nand_release(h1910_nand_mtd); /* Release io resource */ - iounmap ((void *) this->IO_ADDR_W); + iounmap((void *)this->IO_ADDR_W); /* Free the MTD device structure */ - kfree (h1910_nand_mtd); + kfree(h1910_nand_mtd); } + module_exit(h1910_cleanup); MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 95e96fa1fceb..27083ed0a017 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -10,67 +10,31 @@ * http://www.linux-mtd.infradead.org/tech/nand.html * * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) - * 2002 Thomas Gleixner (tglx@linutronix.de) + * 2002-2006 Thomas Gleixner (tglx@linutronix.de) * - * 02-08-2004 tglx: support for strange chips, which cannot auto increment - * pages on read / read_oob - * - * 03-17-2004 tglx: Check ready before auto increment check. Simon Bayes - * pointed this out, as he marked an auto increment capable chip - * as NOAUTOINCR in the board driver. - * Make reads over block boundaries work too - * - * 04-14-2004 tglx: first working version for 2k page size chips - * - * 05-19-2004 tglx: Basic support for Renesas AG-AND chips - * - * 09-24-2004 tglx: add support for hardware controllers (e.g. ECC) shared - * among multiple independend devices. Suggestions and initial patch - * from Ben Dooks <ben-mtd@fluff.org> - * - * 12-05-2004 dmarlin: add workaround for Renesas AG-AND chips "disturb" issue. - * Basically, any block not rewritten may lose data when surrounding blocks - * are rewritten many times. JFFS2 ensures this doesn't happen for blocks - * it uses, but the Bad Block Table(s) may not be rewritten. To ensure they - * do not lose data, force them to be rewritten when some of the surrounding - * blocks are erased. Rather than tracking a specific nearby block (which - * could itself go bad), use a page address 'mask' to select several blocks - * in the same area, and rewrite the BBT when any of them are erased. - * - * 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas - * AG-AND chips. If there was a sudden loss of power during an erase operation, - * a "device recovery" operation must be performed when power is restored - * to ensure correct operation. - * - * 01-20-2005 dmarlin: added support for optional hardware specific callback routine to - * perform extra error status checks on erase and write failures. This required - * adding a wrapper function for nand_read_ecc. - * - * 08-20-2005 vwool: suspend/resume added - * - * Credits: + * Credits: * David Woodhouse for adding multichip support * * Aleph One Ltd. and Toby Churchill Ltd. for supporting the * rework for 2K page size chips * - * TODO: + * TODO: * Enable cached programming for 2k page size chips * Check, if mtd->ecctype should be set to MTD_ECC_HW * if we have HW ecc support. * The AG-AND chips have nice features for speed improvement, * which are not supported yet. Read / program 4 pages in one go. * - * $Id: nand_base.c,v 1.150 2005/09/15 13:58:48 vwool Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ +#include <linux/module.h> #include <linux/delay.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/types.h> @@ -88,75 +52,46 @@ #endif /* Define default oob placement schemes for large and small page devices */ -static struct nand_oobinfo nand_oob_8 = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout nand_oob_8 = { .eccbytes = 3, .eccpos = {0, 1, 2}, - .oobfree = { {3, 2}, {6, 2} } + .oobfree = { + {.offset = 3, + .length = 2}, + {.offset = 6, + .length = 2}} }; -static struct nand_oobinfo nand_oob_16 = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout nand_oob_16 = { .eccbytes = 6, .eccpos = {0, 1, 2, 3, 6, 7}, - .oobfree = { {8, 8} } + .oobfree = { + {.offset = 8, + . length = 8}} }; -static struct nand_oobinfo nand_oob_64 = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout nand_oob_64 = { .eccbytes = 24, .eccpos = { - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63}, - .oobfree = { {2, 38} } + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63}, + .oobfree = { + {.offset = 2, + .length = 38}} }; -/* This is used for padding purposes in nand_write_oob */ -static u_char ffchars[] = { - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, -}; +static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, + int new_state); + +static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops); /* - * NAND low-level MTD interface functions + * For devices which display every fart in the system on a seperate LED. Is + * compiled away when LED support is disabled. */ -static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len); -static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len); -static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len); - -static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); -static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, - size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); -static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); -static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf); -static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, - size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); -static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf); -static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t * retlen); -static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel); -static int nand_erase (struct mtd_info *mtd, struct erase_info *instr); -static void nand_sync (struct mtd_info *mtd); - -/* Some internal functions */ -static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, - struct nand_oobinfo *oobsel, int mode); -#ifdef CONFIG_MTD_NAND_VERIFY_WRITE -static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, - u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode); -#else -#define nand_verify_pages(...) (0) -#endif - -static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state); +DEFINE_LED_TRIGGER(nand_led_trigger); /** * nand_release_device - [GENERIC] release chip @@ -164,27 +99,19 @@ static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int ne * * Deselect, release chip lock and wake up anyone waiting on the device */ -static void nand_release_device (struct mtd_info *mtd) +static void nand_release_device(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; /* De-select the NAND device */ - this->select_chip(mtd, -1); - - if (this->controller) { - /* Release the controller and the chip */ - spin_lock(&this->controller->lock); - this->controller->active = NULL; - this->state = FL_READY; - wake_up(&this->controller->wq); - spin_unlock(&this->controller->lock); - } else { - /* Release the chip */ - spin_lock(&this->chip_lock); - this->state = FL_READY; - wake_up(&this->wq); - spin_unlock(&this->chip_lock); - } + chip->select_chip(mtd, -1); + + /* Release the controller and the chip */ + spin_lock(&chip->controller->lock); + chip->controller->active = NULL; + chip->state = FL_READY; + wake_up(&chip->controller->wq); + spin_unlock(&chip->controller->lock); } /** @@ -193,23 +120,10 @@ static void nand_release_device (struct mtd_info *mtd) * * Default read function for 8bit buswith */ -static u_char nand_read_byte(struct mtd_info *mtd) -{ - struct nand_chip *this = mtd->priv; - return readb(this->IO_ADDR_R); -} - -/** - * nand_write_byte - [DEFAULT] write one byte to the chip - * @mtd: MTD device structure - * @byte: pointer to data byte to write - * - * Default write function for 8it buswith - */ -static void nand_write_byte(struct mtd_info *mtd, u_char byte) +static uint8_t nand_read_byte(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; - writeb(byte, this->IO_ADDR_W); + struct nand_chip *chip = mtd->priv; + return readb(chip->IO_ADDR_R); } /** @@ -219,24 +133,10 @@ static void nand_write_byte(struct mtd_info *mtd, u_char byte) * Default read function for 16bit buswith with * endianess conversion */ -static u_char nand_read_byte16(struct mtd_info *mtd) +static uint8_t nand_read_byte16(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; - return (u_char) cpu_to_le16(readw(this->IO_ADDR_R)); -} - -/** - * nand_write_byte16 - [DEFAULT] write one byte endianess aware to the chip - * @mtd: MTD device structure - * @byte: pointer to data byte to write - * - * Default write function for 16bit buswith with - * endianess conversion - */ -static void nand_write_byte16(struct mtd_info *mtd, u_char byte) -{ - struct nand_chip *this = mtd->priv; - writew(le16_to_cpu((u16) byte), this->IO_ADDR_W); + struct nand_chip *chip = mtd->priv; + return (uint8_t) cpu_to_le16(readw(chip->IO_ADDR_R)); } /** @@ -248,22 +148,8 @@ static void nand_write_byte16(struct mtd_info *mtd, u_char byte) */ static u16 nand_read_word(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; - return readw(this->IO_ADDR_R); -} - -/** - * nand_write_word - [DEFAULT] write one word to the chip - * @mtd: MTD device structure - * @word: data word to write - * - * Default write function for 16bit buswith without - * endianess conversion - */ -static void nand_write_word(struct mtd_info *mtd, u16 word) -{ - struct nand_chip *this = mtd->priv; - writew(word, this->IO_ADDR_W); + struct nand_chip *chip = mtd->priv; + return readw(chip->IO_ADDR_R); } /** @@ -273,15 +159,15 @@ static void nand_write_word(struct mtd_info *mtd, u16 word) * * Default select function for 1 chip devices. */ -static void nand_select_chip(struct mtd_info *mtd, int chip) +static void nand_select_chip(struct mtd_info *mtd, int chipnr) { - struct nand_chip *this = mtd->priv; - switch(chip) { + struct nand_chip *chip = mtd->priv; + + switch (chipnr) { case -1: - this->hwcontrol(mtd, NAND_CTL_CLRNCE); + chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE); break; case 0: - this->hwcontrol(mtd, NAND_CTL_SETNCE); break; default: @@ -297,13 +183,13 @@ static void nand_select_chip(struct mtd_info *mtd, int chip) * * Default write function for 8bit buswith */ -static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) +static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - for (i=0; i<len; i++) - writeb(buf[i], this->IO_ADDR_W); + for (i = 0; i < len; i++) + writeb(buf[i], chip->IO_ADDR_W); } /** @@ -314,13 +200,13 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) * * Default read function for 8bit buswith */ -static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) +static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - for (i=0; i<len; i++) - buf[i] = readb(this->IO_ADDR_R); + for (i = 0; i < len; i++) + buf[i] = readb(chip->IO_ADDR_R); } /** @@ -331,15 +217,14 @@ static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) * * Default verify function for 8bit buswith */ -static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) +static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - for (i=0; i<len; i++) - if (buf[i] != readb(this->IO_ADDR_R)) + for (i = 0; i < len; i++) + if (buf[i] != readb(chip->IO_ADDR_R)) return -EFAULT; - return 0; } @@ -351,15 +236,15 @@ static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) * * Default write function for 16bit buswith */ -static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) +static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) - writew(p[i], this->IO_ADDR_W); + for (i = 0; i < len; i++) + writew(p[i], chip->IO_ADDR_W); } @@ -371,15 +256,15 @@ static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) * * Default read function for 16bit buswith */ -static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len) +static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) - p[i] = readw(this->IO_ADDR_R); + for (i = 0; i < len; i++) + p[i] = readw(chip->IO_ADDR_R); } /** @@ -390,15 +275,15 @@ static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len) * * Default verify function for 16bit buswith */ -static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) +static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { int i; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; u16 *p = (u16 *) buf; len >>= 1; - for (i=0; i<len; i++) - if (p[i] != readw(this->IO_ADDR_R)) + for (i = 0; i < len; i++) + if (p[i] != readw(chip->IO_ADDR_R)) return -EFAULT; return 0; @@ -415,38 +300,37 @@ static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) { int page, chipnr, res = 0; - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; u16 bad; if (getchip) { - page = (int)(ofs >> this->page_shift); - chipnr = (int)(ofs >> this->chip_shift); + page = (int)(ofs >> chip->page_shift); + chipnr = (int)(ofs >> chip->chip_shift); - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_READING); + nand_get_device(chip, mtd, FL_READING); /* Select the NAND device */ - this->select_chip(mtd, chipnr); + chip->select_chip(mtd, chipnr); } else - page = (int) ofs; + page = (int)ofs; - if (this->options & NAND_BUSWIDTH_16) { - this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask); - bad = cpu_to_le16(this->read_word(mtd)); - if (this->badblockpos & 0x1) + if (chip->options & NAND_BUSWIDTH_16) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE, + page & chip->pagemask); + bad = cpu_to_le16(chip->read_word(mtd)); + if (chip->badblockpos & 0x1) bad >>= 8; if ((bad & 0xFF) != 0xff) res = 1; } else { - this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask); - if (this->read_byte(mtd) != 0xff) + chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, + page & chip->pagemask); + if (chip->read_byte(mtd) != 0xff) res = 1; } - if (getchip) { - /* Deselect and wake up anyone waiting on the device */ + if (getchip) nand_release_device(mtd); - } return res; } @@ -461,23 +345,33 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) */ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) { - struct nand_chip *this = mtd->priv; - u_char buf[2] = {0, 0}; - size_t retlen; - int block; + struct nand_chip *chip = mtd->priv; + uint8_t buf[2] = { 0, 0 }; + int block, ret; /* Get block number */ - block = ((int) ofs) >> this->bbt_erase_shift; - if (this->bbt) - this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); + block = ((int)ofs) >> chip->bbt_erase_shift; + if (chip->bbt) + chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); /* Do we have a flash based bad block table ? */ - if (this->options & NAND_USE_FLASH_BBT) - return nand_update_bbt (mtd, ofs); + if (chip->options & NAND_USE_FLASH_BBT) + ret = nand_update_bbt(mtd, ofs); + else { + /* We write two bytes, so we dont have to mess with 16 bit + * access + */ + ofs += mtd->oobsize; + chip->ops.len = 2; + chip->ops.datbuf = NULL; + chip->ops.oobbuf = buf; + chip->ops.ooboffs = chip->badblockpos & ~0x01; - /* We write two bytes, so we dont have to mess with 16 bit access */ - ofs += mtd->oobsize + (this->badblockpos & ~0x01); - return nand_write_oob (mtd, ofs , 2, &retlen, buf); + ret = nand_do_write_oob(mtd, ofs, &chip->ops); + } + if (!ret) + mtd->ecc_stats.badblocks++; + return ret; } /** @@ -487,12 +381,12 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) * * The function expects, that the device is already selected */ -static int nand_check_wp (struct mtd_info *mtd) +static int nand_check_wp(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; /* Check the WP bit */ - this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); - return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1; + chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); + return (chip->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1; } /** @@ -505,32 +399,31 @@ static int nand_check_wp (struct mtd_info *mtd) * Check, if the block is bad. Either by reading the bad block table or * calling of the scan function. */ -static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) +static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, + int allowbbt) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - if (!this->bbt) - return this->block_bad(mtd, ofs, getchip); + if (!chip->bbt) + return chip->block_bad(mtd, ofs, getchip); /* Return info from the table */ - return nand_isbad_bbt (mtd, ofs, allowbbt); + return nand_isbad_bbt(mtd, ofs, allowbbt); } -DEFINE_LED_TRIGGER(nand_led_trigger); - /* * Wait for the ready pin, after a command * The timeout is catched later. */ static void nand_wait_ready(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; - unsigned long timeo = jiffies + 2; + struct nand_chip *chip = mtd->priv; + unsigned long timeo = jiffies + 2; led_trigger_event(nand_led_trigger, LED_FULL); /* wait until command is processed or timeout occures */ do { - if (this->dev_ready(mtd)) + if (chip->dev_ready(mtd)) break; touch_softlockup_watchdog(); } while (time_before(jiffies, timeo)); @@ -547,21 +440,21 @@ static void nand_wait_ready(struct mtd_info *mtd) * Send command to NAND device. This function is used for small page * devices (256/512 Bytes per page) */ -static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) +static void nand_command(struct mtd_info *mtd, unsigned int command, + int column, int page_addr) { - register struct nand_chip *this = mtd->priv; + register struct nand_chip *chip = mtd->priv; + int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE; - /* Begin command latch cycle */ - this->hwcontrol(mtd, NAND_CTL_SETCLE); /* * Write out the command to the device. */ if (command == NAND_CMD_SEQIN) { int readcmd; - if (column >= mtd->oobblock) { + if (column >= mtd->writesize) { /* OOB area */ - column -= mtd->oobblock; + column -= mtd->writesize; readcmd = NAND_CMD_READOOB; } else if (column < 256) { /* First 256 bytes --> READ0 */ @@ -570,38 +463,37 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in column -= 256; readcmd = NAND_CMD_READ1; } - this->write_byte(mtd, readcmd); + chip->cmd_ctrl(mtd, readcmd, ctrl); + ctrl &= ~NAND_CTRL_CHANGE; } - this->write_byte(mtd, command); - - /* Set ALE and clear CLE to start address cycle */ - this->hwcontrol(mtd, NAND_CTL_CLRCLE); + chip->cmd_ctrl(mtd, command, ctrl); - if (column != -1 || page_addr != -1) { - this->hwcontrol(mtd, NAND_CTL_SETALE); - - /* Serially input address */ - if (column != -1) { - /* Adjust columns for 16 bit buswidth */ - if (this->options & NAND_BUSWIDTH_16) - column >>= 1; - this->write_byte(mtd, column); - } - if (page_addr != -1) { - this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); - this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); - /* One more address cycle for devices > 32MiB */ - if (this->chipsize > (32 << 20)) - this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0x0f)); - } - /* Latch in address */ - this->hwcontrol(mtd, NAND_CTL_CLRALE); + /* + * Address cycle, when necessary + */ + ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE; + /* Serially input address */ + if (column != -1) { + /* Adjust columns for 16 bit buswidth */ + if (chip->options & NAND_BUSWIDTH_16) + column >>= 1; + chip->cmd_ctrl(mtd, column, ctrl); + ctrl &= ~NAND_CTRL_CHANGE; + } + if (page_addr != -1) { + chip->cmd_ctrl(mtd, page_addr, ctrl); + ctrl &= ~NAND_CTRL_CHANGE; + chip->cmd_ctrl(mtd, page_addr >> 8, ctrl); + /* One more address cycle for devices > 32MiB */ + if (chip->chipsize > (32 << 20)) + chip->cmd_ctrl(mtd, page_addr >> 16, ctrl); } + chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* * program and erase have their own busy handlers * status and sequential in needs no delay - */ + */ switch (command) { case NAND_CMD_PAGEPROG: @@ -612,29 +504,30 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in return; case NAND_CMD_RESET: - if (this->dev_ready) + if (chip->dev_ready) break; - udelay(this->chip_delay); - this->hwcontrol(mtd, NAND_CTL_SETCLE); - this->write_byte(mtd, NAND_CMD_STATUS); - this->hwcontrol(mtd, NAND_CTL_CLRCLE); - while ( !(this->read_byte(mtd) & NAND_STATUS_READY)); + udelay(chip->chip_delay); + chip->cmd_ctrl(mtd, NAND_CMD_STATUS, + NAND_CTRL_CLE | NAND_CTRL_CHANGE); + chip->cmd_ctrl(mtd, + NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); + while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ; return; - /* This applies to read commands */ + /* This applies to read commands */ default: /* * If we don't have access to the busy pin, we apply the given * command delay - */ - if (!this->dev_ready) { - udelay (this->chip_delay); + */ + if (!chip->dev_ready) { + udelay(chip->chip_delay); return; } } /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ - ndelay (100); + ndelay(100); nand_wait_ready(mtd); } @@ -646,50 +539,49 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in * @column: the column address for this command, -1 if none * @page_addr: the page address for this command, -1 if none * - * Send command to NAND device. This is the version for the new large page devices - * We dont have the seperate regions as we have in the small page devices. - * We must emulate NAND_CMD_READOOB to keep the code compatible. + * Send command to NAND device. This is the version for the new large page + * devices We dont have the separate regions as we have in the small page + * devices. We must emulate NAND_CMD_READOOB to keep the code compatible. * */ -static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr) +static void nand_command_lp(struct mtd_info *mtd, unsigned int command, + int column, int page_addr) { - register struct nand_chip *this = mtd->priv; + register struct nand_chip *chip = mtd->priv; /* Emulate NAND_CMD_READOOB */ if (command == NAND_CMD_READOOB) { - column += mtd->oobblock; + column += mtd->writesize; command = NAND_CMD_READ0; } - - /* Begin command latch cycle */ - this->hwcontrol(mtd, NAND_CTL_SETCLE); - /* Write out the command to the device. */ - this->write_byte(mtd, (command & 0xff)); - /* End command latch cycle */ - this->hwcontrol(mtd, NAND_CTL_CLRCLE); + /* Command latch cycle */ + chip->cmd_ctrl(mtd, command & 0xff, + NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); if (column != -1 || page_addr != -1) { - this->hwcontrol(mtd, NAND_CTL_SETALE); + int ctrl = NAND_CTRL_CHANGE | NAND_NCE | NAND_ALE; /* Serially input address */ if (column != -1) { /* Adjust columns for 16 bit buswidth */ - if (this->options & NAND_BUSWIDTH_16) + if (chip->options & NAND_BUSWIDTH_16) column >>= 1; - this->write_byte(mtd, column & 0xff); - this->write_byte(mtd, column >> 8); + chip->cmd_ctrl(mtd, column, ctrl); + ctrl &= ~NAND_CTRL_CHANGE; + chip->cmd_ctrl(mtd, column >> 8, ctrl); } if (page_addr != -1) { - this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); - this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); + chip->cmd_ctrl(mtd, page_addr, ctrl); + chip->cmd_ctrl(mtd, page_addr >> 8, + NAND_NCE | NAND_ALE); /* One more address cycle for devices > 128MiB */ - if (this->chipsize > (128 << 20)) - this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0xff)); + if (chip->chipsize > (128 << 20)) + chip->cmd_ctrl(mtd, page_addr >> 16, + NAND_NCE | NAND_ALE); } - /* Latch in address */ - this->hwcontrol(mtd, NAND_CTL_CLRALE); } + chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* * program and erase have their own busy handlers @@ -702,55 +594,62 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: case NAND_CMD_SEQIN: + case NAND_CMD_RNDIN: case NAND_CMD_STATUS: case NAND_CMD_DEPLETE1: return; - /* - * read error status commands require only a short delay - */ + /* + * read error status commands require only a short delay + */ case NAND_CMD_STATUS_ERROR: case NAND_CMD_STATUS_ERROR0: case NAND_CMD_STATUS_ERROR1: case NAND_CMD_STATUS_ERROR2: case NAND_CMD_STATUS_ERROR3: - udelay(this->chip_delay); + udelay(chip->chip_delay); return; case NAND_CMD_RESET: - if (this->dev_ready) + if (chip->dev_ready) break; - udelay(this->chip_delay); - this->hwcontrol(mtd, NAND_CTL_SETCLE); - this->write_byte(mtd, NAND_CMD_STATUS); - this->hwcontrol(mtd, NAND_CTL_CLRCLE); - while ( !(this->read_byte(mtd) & NAND_STATUS_READY)); + udelay(chip->chip_delay); + chip->cmd_ctrl(mtd, NAND_CMD_STATUS, + NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); + chip->cmd_ctrl(mtd, NAND_CMD_NONE, + NAND_NCE | NAND_CTRL_CHANGE); + while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ; + return; + + case NAND_CMD_RNDOUT: + /* No ready / busy check necessary */ + chip->cmd_ctrl(mtd, NAND_CMD_RNDOUTSTART, + NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); + chip->cmd_ctrl(mtd, NAND_CMD_NONE, + NAND_NCE | NAND_CTRL_CHANGE); return; case NAND_CMD_READ0: - /* Begin command latch cycle */ - this->hwcontrol(mtd, NAND_CTL_SETCLE); - /* Write out the start read command */ - this->write_byte(mtd, NAND_CMD_READSTART); - /* End command latch cycle */ - this->hwcontrol(mtd, NAND_CTL_CLRCLE); - /* Fall through into ready check */ - - /* This applies to read commands */ + chip->cmd_ctrl(mtd, NAND_CMD_READSTART, + NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); + chip->cmd_ctrl(mtd, NAND_CMD_NONE, + NAND_NCE | NAND_CTRL_CHANGE); + + /* This applies to read commands */ default: /* * If we don't have access to the busy pin, we apply the given * command delay - */ - if (!this->dev_ready) { - udelay (this->chip_delay); + */ + if (!chip->dev_ready) { + udelay(chip->chip_delay); return; } } /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ - ndelay (100); + ndelay(100); nand_wait_ready(mtd); } @@ -763,34 +662,28 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, * * Get the device and lock it for exclusive access */ -static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) +static int +nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) { - struct nand_chip *active; - spinlock_t *lock; - wait_queue_head_t *wq; - DECLARE_WAITQUEUE (wait, current); - - lock = (this->controller) ? &this->controller->lock : &this->chip_lock; - wq = (this->controller) ? &this->controller->wq : &this->wq; -retry: - active = this; + spinlock_t *lock = &chip->controller->lock; + wait_queue_head_t *wq = &chip->controller->wq; + DECLARE_WAITQUEUE(wait, current); + retry: spin_lock(lock); /* Hardware controller shared among independend devices */ - if (this->controller) { - if (this->controller->active) - active = this->controller->active; - else - this->controller->active = this; - } - if (active == this && this->state == FL_READY) { - this->state = new_state; + /* Hardware controller shared among independend devices */ + if (!chip->controller->active) + chip->controller->active = chip; + + if (chip->controller->active == chip && chip->state == FL_READY) { + chip->state = new_state; spin_unlock(lock); return 0; } if (new_state == FL_PM_SUSPENDED) { spin_unlock(lock); - return (this->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; + return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; } set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(wq, &wait); @@ -804,540 +697,339 @@ retry: * nand_wait - [DEFAULT] wait until the command is done * @mtd: MTD device structure * @this: NAND chip structure - * @state: state to select the max. timeout value * * Wait for command done. This applies to erase and program only * Erase can take up to 400ms and program up to 20ms according to * general NAND and SmartMedia specs * */ -static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) +static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) { - unsigned long timeo = jiffies; - int status; + unsigned long timeo = jiffies; + int status, state = chip->state; if (state == FL_ERASING) - timeo += (HZ * 400) / 1000; + timeo += (HZ * 400) / 1000; else - timeo += (HZ * 20) / 1000; + timeo += (HZ * 20) / 1000; led_trigger_event(nand_led_trigger, LED_FULL); /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ - ndelay (100); + ndelay(100); - if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) - this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1); + if ((state == FL_ERASING) && (chip->options & NAND_IS_AND)) + chip->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1); else - this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); + chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); while (time_before(jiffies, timeo)) { - /* Check, if we were interrupted */ - if (this->state != state) - return 0; - - if (this->dev_ready) { - if (this->dev_ready(mtd)) + if (chip->dev_ready) { + if (chip->dev_ready(mtd)) break; } else { - if (this->read_byte(mtd) & NAND_STATUS_READY) + if (chip->read_byte(mtd) & NAND_STATUS_READY) break; } cond_resched(); } led_trigger_event(nand_led_trigger, LED_OFF); - status = (int) this->read_byte(mtd); + status = (int)chip->read_byte(mtd); return status; } /** - * nand_write_page - [GENERIC] write one page - * @mtd: MTD device structure - * @this: NAND chip structure - * @page: startpage inside the chip, must be called with (page & this->pagemask) - * @oob_buf: out of band data buffer - * @oobsel: out of band selecttion structre - * @cached: 1 = enable cached programming if supported by chip - * - * Nand_page_program function is used for write and writev ! - * This function will always program a full page of data - * If you call it with a non page aligned buffer, you're lost :) - * - * Cached programming is not supported yet. + * nand_read_page_raw - [Intern] read raw page data without ecc + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data */ -static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, - u_char *oob_buf, struct nand_oobinfo *oobsel, int cached) +static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf) { - int i, status; - u_char ecc_code[32]; - int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; - int *oob_config = oobsel->eccpos; - int datidx = 0, eccidx = 0, eccsteps = this->eccsteps; - int eccbytes = 0; - - /* FIXME: Enable cached programming */ - cached = 0; + chip->read_buf(mtd, buf, mtd->writesize); + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + return 0; +} - /* Send command to begin auto page programming */ - this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page); +/** + * nand_read_page_swecc - {REPLACABLE] software ecc based page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + */ +static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf) +{ + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *p = buf; + uint8_t *ecc_calc = chip->buffers.ecccalc; + uint8_t *ecc_code = chip->buffers.ecccode; + int *eccpos = chip->ecc.layout->eccpos; - /* Write out complete page of data, take care of eccmode */ - switch (eccmode) { - /* No ecc, write all */ - case NAND_ECC_NONE: - printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n"); - this->write_buf(mtd, this->data_poi, mtd->oobblock); - break; + nand_read_page_raw(mtd, chip, buf); - /* Software ecc 3/256, write all */ - case NAND_ECC_SOFT: - for (; eccsteps; eccsteps--) { - this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code); - for (i = 0; i < 3; i++, eccidx++) - oob_buf[oob_config[eccidx]] = ecc_code[i]; - datidx += this->eccsize; - } - this->write_buf(mtd, this->data_poi, mtd->oobblock); - break; - default: - eccbytes = this->eccbytes; - for (; eccsteps; eccsteps--) { - /* enable hardware ecc logic for write */ - this->enable_hwecc(mtd, NAND_ECC_WRITE); - this->write_buf(mtd, &this->data_poi[datidx], this->eccsize); - this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code); - for (i = 0; i < eccbytes; i++, eccidx++) - oob_buf[oob_config[eccidx]] = ecc_code[i]; - /* If the hardware ecc provides syndromes then - * the ecc code must be written immidiately after - * the data bytes (words) */ - if (this->options & NAND_HWECC_SYNDROME) - this->write_buf(mtd, ecc_code, eccbytes); - datidx += this->eccsize; - } - break; - } + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) + chip->ecc.calculate(mtd, p, &ecc_calc[i]); - /* Write out OOB data */ - if (this->options & NAND_HWECC_SYNDROME) - this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes); - else - this->write_buf(mtd, oob_buf, mtd->oobsize); + for (i = 0; i < chip->ecc.total; i++) + ecc_code[i] = chip->oob_poi[eccpos[i]]; - /* Send command to actually program the data */ - this->cmdfunc (mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1); + eccsteps = chip->ecc.steps; + p = buf; - if (!cached) { - /* call wait ready function */ - status = this->waitfunc (mtd, this, FL_WRITING); + for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + int stat; - /* See if operation failed and additional status checks are available */ - if ((status & NAND_STATUS_FAIL) && (this->errstat)) { - status = this->errstat(mtd, this, FL_WRITING, status, page); - } - - /* See if device thinks it succeeded */ - if (status & NAND_STATUS_FAIL) { - DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page); - return -EIO; - } - } else { - /* FIXME: Implement cached programming ! */ - /* wait until cache is ready*/ - // status = this->waitfunc (mtd, this, FL_CACHEDRPG); + stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]); + if (stat == -1) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; } return 0; } -#ifdef CONFIG_MTD_NAND_VERIFY_WRITE /** - * nand_verify_pages - [GENERIC] verify the chip contents after a write - * @mtd: MTD device structure - * @this: NAND chip structure - * @page: startpage inside the chip, must be called with (page & this->pagemask) - * @numpages: number of pages to verify - * @oob_buf: out of band data buffer - * @oobsel: out of band selecttion structre - * @chipnr: number of the current chip - * @oobmode: 1 = full buffer verify, 0 = ecc only + * nand_read_page_hwecc - {REPLACABLE] hardware ecc based page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data * - * The NAND device assumes that it is always writing to a cleanly erased page. - * Hence, it performs its internal write verification only on bits that - * transitioned from 1 to 0. The device does NOT verify the whole page on a - * byte by byte basis. It is possible that the page was not completely erased - * or the page is becoming unusable due to wear. The read with ECC would catch - * the error later when the ECC page check fails, but we would rather catch - * it early in the page write stage. Better to write no data than invalid data. + * Not for syndrome calculating ecc controllers which need a special oob layout */ -static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, - u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode) +static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf) { - int i, j, datidx = 0, oobofs = 0, res = -EIO; - int eccsteps = this->eccsteps; - int hweccbytes; - u_char oobdata[64]; - - hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0; - - /* Send command to read back the first page */ - this->cmdfunc (mtd, NAND_CMD_READ0, 0, page); - - for(;;) { - for (j = 0; j < eccsteps; j++) { - /* Loop through and verify the data */ - if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) { - DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); - goto out; - } - datidx += mtd->eccsize; - /* Have we a hw generator layout ? */ - if (!hweccbytes) - continue; - if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) { - DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); - goto out; - } - oobofs += hweccbytes; - } + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *p = buf; + uint8_t *ecc_calc = chip->buffers.ecccalc; + uint8_t *ecc_code = chip->buffers.ecccode; + int *eccpos = chip->ecc.layout->eccpos; + + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + chip->ecc.hwctl(mtd, NAND_ECC_READ); + chip->read_buf(mtd, p, eccsize); + chip->ecc.calculate(mtd, p, &ecc_calc[i]); + } + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); - /* check, if we must compare all data or if we just have to - * compare the ecc bytes - */ - if (oobmode) { - if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) { - DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); - goto out; - } - } else { - /* Read always, else autoincrement fails */ - this->read_buf(mtd, oobdata, mtd->oobsize - hweccbytes * eccsteps); - - if (oobsel->useecc != MTD_NANDECC_OFF && !hweccbytes) { - int ecccnt = oobsel->eccbytes; - - for (i = 0; i < ecccnt; i++) { - int idx = oobsel->eccpos[i]; - if (oobdata[idx] != oob_buf[oobofs + idx] ) { - DEBUG (MTD_DEBUG_LEVEL0, - "%s: Failed ECC write " - "verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i); - goto out; - } - } - } - } - oobofs += mtd->oobsize - hweccbytes * eccsteps; - page++; - numpages--; - - /* Apply delay or wait for ready/busy pin - * Do this before the AUTOINCR check, so no problems - * arise if a chip which does auto increment - * is marked as NOAUTOINCR by the board driver. - * Do this also before returning, so the chip is - * ready for the next command. - */ - if (!this->dev_ready) - udelay (this->chip_delay); - else - nand_wait_ready(mtd); + for (i = 0; i < chip->ecc.total; i++) + ecc_code[i] = chip->oob_poi[eccpos[i]]; - /* All done, return happy */ - if (!numpages) - return 0; + eccsteps = chip->ecc.steps; + p = buf; + for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + int stat; - /* Check, if the chip supports auto page increment */ - if (!NAND_CANAUTOINCR(this)) - this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); + stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]); + if (stat == -1) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; } - /* - * Terminate the read command. We come here in case of an error - * So we must issue a reset command. - */ -out: - this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1); - return res; + return 0; } -#endif /** - * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc - * @mtd: MTD device structure - * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data + * nand_read_page_syndrome - {REPLACABLE] hardware ecc syndrom based page read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data * - * This function simply calls nand_do_read_ecc with oob buffer and oobsel = NULL - * and flags = 0xff + * The hw generator calculates the error syndrome automatically. Therefor + * we need a special oob layout and handling. */ -static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) +static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf) { - return nand_do_read_ecc (mtd, from, len, retlen, buf, NULL, &mtd->oobinfo, 0xff); -} + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *p = buf; + uint8_t *oob = chip->oob_poi; + + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + int stat; + + chip->ecc.hwctl(mtd, NAND_ECC_READ); + chip->read_buf(mtd, p, eccsize); + + if (chip->ecc.prepad) { + chip->read_buf(mtd, oob, chip->ecc.prepad); + oob += chip->ecc.prepad; + } + + chip->ecc.hwctl(mtd, NAND_ECC_READSYN); + chip->read_buf(mtd, oob, eccbytes); + stat = chip->ecc.correct(mtd, p, oob, NULL); + + if (stat == -1) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; + + oob += eccbytes; + + if (chip->ecc.postpad) { + chip->read_buf(mtd, oob, chip->ecc.postpad); + oob += chip->ecc.postpad; + } + } + + /* Calculate remaining oob bytes */ + i = mtd->oobsize - (oob - chip->oob_poi); + if (i) + chip->read_buf(mtd, oob, i); + return 0; +} /** - * nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc - * @mtd: MTD device structure - * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data - * @oob_buf: filesystem supplied oob data buffer - * @oobsel: oob selection structure - * - * This function simply calls nand_do_read_ecc with flags = 0xff + * nand_transfer_oob - [Internal] Transfer oob to client buffer + * @chip: nand chip structure + * @ops: oob ops structure */ -static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, - size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel) +static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, + struct mtd_oob_ops *ops) { - /* use userspace supplied oobinfo, if zero */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - return nand_do_read_ecc(mtd, from, len, retlen, buf, oob_buf, oobsel, 0xff); + size_t len = ops->ooblen; + + switch(ops->mode) { + + case MTD_OOB_PLACE: + case MTD_OOB_RAW: + memcpy(oob, chip->oob_poi + ops->ooboffs, len); + return oob + len; + + case MTD_OOB_AUTO: { + struct nand_oobfree *free = chip->ecc.layout->oobfree; + uint32_t boffs = 0, roffs = ops->ooboffs; + size_t bytes = 0; + + for(; free->length && len; free++, len -= bytes) { + /* Read request not from offset 0 ? */ + if (unlikely(roffs)) { + if (roffs >= free->length) { + roffs -= free->length; + continue; + } + boffs = free->offset + roffs; + bytes = min_t(size_t, len, + (free->length - roffs)); + roffs = 0; + } else { + bytes = min_t(size_t, len, free->length); + boffs = free->offset; + } + memcpy(oob, chip->oob_poi + boffs, bytes); + oob += bytes; + } + return oob; + } + default: + BUG(); + } + return NULL; } - /** - * nand_do_read_ecc - [MTD Interface] Read data with ECC + * nand_do_read_ops - [Internal] Read data with ECC + * * @mtd: MTD device structure * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data - * @oob_buf: filesystem supplied oob data buffer (can be NULL) - * @oobsel: oob selection structure - * @flags: flag to indicate if nand_get_device/nand_release_device should be preformed - * and how many corrected error bits are acceptable: - * bits 0..7 - number of tolerable errors - * bit 8 - 0 == do not get/release chip, 1 == get/release chip * - * NAND read with ECC + * Internal function. Called with chip held. */ -int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, - size_t * retlen, u_char * buf, u_char * oob_buf, - struct nand_oobinfo *oobsel, int flags) +static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { + int chipnr, page, realpage, col, bytes, aligned; + struct nand_chip *chip = mtd->priv; + struct mtd_ecc_stats stats; + int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; + int sndcmd = 1; + int ret = 0; + uint32_t readlen = ops->len; + uint8_t *bufpoi, *oob, *buf; - int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1; - int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0; - struct nand_chip *this = mtd->priv; - u_char *data_poi, *oob_data = oob_buf; - u_char ecc_calc[32]; - u_char ecc_code[32]; - int eccmode, eccsteps; - int *oob_config, datidx; - int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; - int eccbytes; - int compareecc = 1; - int oobreadlen; - - - DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); - - /* Do not allow reads past end of device */ - if ((from + len) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n"); - *retlen = 0; - return -EINVAL; - } - - /* Grab the lock and see if the device is available */ - if (flags & NAND_GET_DEVICE) - nand_get_device (this, mtd, FL_READING); - - /* Autoplace of oob data ? Use the default placement scheme */ - if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) - oobsel = this->autooob; - - eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; - oob_config = oobsel->eccpos; - - /* Select the NAND device */ - chipnr = (int)(from >> this->chip_shift); - this->select_chip(mtd, chipnr); - - /* First we calculate the starting page */ - realpage = (int) (from >> this->page_shift); - page = realpage & this->pagemask; - - /* Get raw starting column */ - col = from & (mtd->oobblock - 1); - - end = mtd->oobblock; - ecc = this->eccsize; - eccbytes = this->eccbytes; - - if ((eccmode == NAND_ECC_NONE) || (this->options & NAND_HWECC_SYNDROME)) - compareecc = 0; - - oobreadlen = mtd->oobsize; - if (this->options & NAND_HWECC_SYNDROME) - oobreadlen -= oobsel->eccbytes; + stats = mtd->ecc_stats; - /* Loop until all data read */ - while (read < len) { + chipnr = (int)(from >> chip->chip_shift); + chip->select_chip(mtd, chipnr); - int aligned = (!col && (len - read) >= end); - /* - * If the read is not page aligned, we have to read into data buffer - * due to ecc, else we read into return buffer direct - */ - if (aligned) - data_poi = &buf[read]; - else - data_poi = this->data_buf; + realpage = (int)(from >> chip->page_shift); + page = realpage & chip->pagemask; - /* Check, if we have this page in the buffer - * - * FIXME: Make it work when we must provide oob data too, - * check the usage of data_buf oob field - */ - if (realpage == this->pagebuf && !oob_buf) { - /* aligned read ? */ - if (aligned) - memcpy (data_poi, this->data_buf, end); - goto readdata; - } + col = (int)(from & (mtd->writesize - 1)); + chip->oob_poi = chip->buffers.oobrbuf; - /* Check, if we must send the read command */ - if (sndcmd) { - this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); - sndcmd = 0; - } + buf = ops->datbuf; + oob = ops->oobbuf; - /* get oob area, if we have no oob buffer from fs-driver */ - if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE || - oobsel->useecc == MTD_NANDECC_AUTOPL_USR) - oob_data = &this->data_buf[end]; + while(1) { + bytes = min(mtd->writesize - col, readlen); + aligned = (bytes == mtd->writesize); - eccsteps = this->eccsteps; + /* Is the current page in the buffer ? */ + if (realpage != chip->pagebuf || oob) { + bufpoi = aligned ? buf : chip->buffers.databuf; - switch (eccmode) { - case NAND_ECC_NONE: { /* No ECC, Read in a page */ - static unsigned long lastwhinge = 0; - if ((lastwhinge / HZ) != (jiffies / HZ)) { - printk (KERN_WARNING "Reading data from NAND FLASH without ECC is not recommended\n"); - lastwhinge = jiffies; + if (likely(sndcmd)) { + chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); + sndcmd = 0; } - this->read_buf(mtd, data_poi, end); - break; - } - case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */ - this->read_buf(mtd, data_poi, end); - for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc) - this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); - break; + /* Now read the page into the buffer */ + ret = chip->ecc.read_page(mtd, chip, bufpoi); + if (ret < 0) + break; - default: - for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) { - this->enable_hwecc(mtd, NAND_ECC_READ); - this->read_buf(mtd, &data_poi[datidx], ecc); - - /* HW ecc with syndrome calculation must read the - * syndrome from flash immidiately after the data */ - if (!compareecc) { - /* Some hw ecc generators need to know when the - * syndrome is read from flash */ - this->enable_hwecc(mtd, NAND_ECC_READSYN); - this->read_buf(mtd, &oob_data[i], eccbytes); - /* We calc error correction directly, it checks the hw - * generator for an error, reads back the syndrome and - * does the error correction on the fly */ - ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]); - if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " - "Failed ECC read, page 0x%08x on chip %d\n", page, chipnr); - ecc_failed++; - } - } else { - this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); - } + /* Transfer not aligned data */ + if (!aligned) { + chip->pagebuf = realpage; + memcpy(buf, chip->buffers.databuf + col, bytes); } - break; - } - - /* read oobdata */ - this->read_buf(mtd, &oob_data[mtd->oobsize - oobreadlen], oobreadlen); - - /* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */ - if (!compareecc) - goto readoob; - - /* Pick the ECC bytes out of the oob data */ - for (j = 0; j < oobsel->eccbytes; j++) - ecc_code[j] = oob_data[oob_config[j]]; - /* correct data, if neccecary */ - for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) { - ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]); + buf += bytes; - /* Get next chunk of ecc bytes */ - j += eccbytes; - - /* Check, if we have a fs supplied oob-buffer, - * This is the legacy mode. Used by YAFFS1 - * Should go away some day - */ - if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) { - int *p = (int *)(&oob_data[mtd->oobsize]); - p[i] = ecc_status; + if (unlikely(oob)) { + /* Raw mode does data:oob:data:oob */ + if (ops->mode != MTD_OOB_RAW) + oob = nand_transfer_oob(chip, oob, ops); + else + buf = nand_transfer_oob(chip, buf, ops); } - if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page); - ecc_failed++; + if (!(chip->options & NAND_NO_READRDY)) { + /* + * Apply delay or wait for ready/busy pin. Do + * this before the AUTOINCR check, so no + * problems arise if a chip which does auto + * increment is marked as NOAUTOINCR by the + * board driver. + */ + if (!chip->dev_ready) + udelay(chip->chip_delay); + else + nand_wait_ready(mtd); } + } else { + memcpy(buf, chip->buffers.databuf + col, bytes); + buf += bytes; } - readoob: - /* check, if we have a fs supplied oob-buffer */ - if (oob_buf) { - /* without autoplace. Legacy mode used by YAFFS1 */ - switch(oobsel->useecc) { - case MTD_NANDECC_AUTOPLACE: - case MTD_NANDECC_AUTOPL_USR: - /* Walk through the autoplace chunks */ - for (i = 0; oobsel->oobfree[i][1]; i++) { - int from = oobsel->oobfree[i][0]; - int num = oobsel->oobfree[i][1]; - memcpy(&oob_buf[oob], &oob_data[from], num); - oob += num; - } - break; - case MTD_NANDECC_PLACE: - /* YAFFS1 legacy mode */ - oob_data += this->eccsteps * sizeof (int); - default: - oob_data += mtd->oobsize; - } - } - readdata: - /* Partial page read, transfer data into fs buffer */ - if (!aligned) { - for (j = col; j < end && read < len; j++) - buf[read++] = data_poi[j]; - this->pagebuf = realpage; - } else - read += mtd->oobblock; - - /* Apply delay or wait for ready/busy pin - * Do this before the AUTOINCR check, so no problems - * arise if a chip which does auto increment - * is marked as NOAUTOINCR by the board driver. - */ - if (!this->dev_ready) - udelay (this->chip_delay); - else - nand_wait_ready(mtd); + readlen -= bytes; - if (read == len) + if (!readlen) break; /* For subsequent reads align to page boundary. */ @@ -1345,701 +1037,775 @@ int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, /* Increment page address */ realpage++; - page = realpage & this->pagemask; + page = realpage & chip->pagemask; /* Check, if we cross a chip boundary */ if (!page) { chipnr++; - this->select_chip(mtd, -1); - this->select_chip(mtd, chipnr); + chip->select_chip(mtd, -1); + chip->select_chip(mtd, chipnr); } + /* Check, if the chip supports auto page increment * or if we have hit a block boundary. - */ - if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) + */ + if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) sndcmd = 1; } - /* Deselect and wake up anyone waiting on the device */ - if (flags & NAND_GET_DEVICE) - nand_release_device(mtd); + ops->retlen = ops->len - (size_t) readlen; - /* - * Return success, if no ECC failures, else -EBADMSG - * fs driver will take care of that, because - * retlen == desired len and result == -EBADMSG - */ - *retlen = read; - return ecc_failed ? -EBADMSG : 0; + if (ret) + return ret; + + if (mtd->ecc_stats.failed - stats.failed) + return -EBADMSG; + + return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; } /** - * nand_read_oob - [MTD Interface] NAND read out-of-band + * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc * @mtd: MTD device structure * @from: offset to read from * @len: number of bytes to read * @retlen: pointer to variable to store the number of read bytes * @buf: the databuffer to put data * - * NAND read out-of-band data from the spare area + * Get hold of the chip and call nand_do_read */ -static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) +static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, uint8_t *buf) { - int i, col, page, chipnr; - struct nand_chip *this = mtd->priv; - int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; + struct nand_chip *chip = mtd->priv; + int ret; - DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + /* Do not allow reads past end of device */ + if ((from + len) > mtd->size) + return -EINVAL; + if (!len) + return 0; - /* Shift to get page */ - page = (int)(from >> this->page_shift); - chipnr = (int)(from >> this->chip_shift); + nand_get_device(chip, mtd, FL_READING); - /* Mask to get column */ - col = from & (mtd->oobsize - 1); + chip->ops.len = len; + chip->ops.datbuf = buf; + chip->ops.oobbuf = NULL; - /* Initialize return length value */ - *retlen = 0; + ret = nand_do_read_ops(mtd, from, &chip->ops); - /* Do not allow reads past end of device */ - if ((from + len) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n"); - *retlen = 0; - return -EINVAL; + nand_release_device(mtd); + + *retlen = chip->ops.retlen; + return ret; +} + +/** + * nand_read_oob_std - [REPLACABLE] the most common OOB data read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read + * @sndcmd: flag whether to issue read command or not + */ +static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd) +{ + if (sndcmd) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); + sndcmd = 0; } + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + return sndcmd; +} - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd , FL_READING); +/** + * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC + * with syndromes + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read + * @sndcmd: flag whether to issue read command or not + */ +static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd) +{ + uint8_t *buf = chip->oob_poi; + int length = mtd->oobsize; + int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; + int eccsize = chip->ecc.size; + uint8_t *bufpoi = buf; + int i, toread, sndrnd = 0, pos; + + chip->cmdfunc(mtd, NAND_CMD_READ0, chip->ecc.size, page); + for (i = 0; i < chip->ecc.steps; i++) { + if (sndrnd) { + pos = eccsize + i * (eccsize + chunk); + if (mtd->writesize > 512) + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, pos, -1); + else + chip->cmdfunc(mtd, NAND_CMD_READ0, pos, page); + } else + sndrnd = 1; + toread = min_t(int, length, chunk); + chip->read_buf(mtd, bufpoi, toread); + bufpoi += toread; + length -= toread; + } + if (length > 0) + chip->read_buf(mtd, bufpoi, length); - /* Select the NAND device */ - this->select_chip(mtd, chipnr); + return 1; +} + +/** + * nand_write_oob_std - [REPLACABLE] the most common OOB data write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write + */ +static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, + int page) +{ + int status = 0; + const uint8_t *buf = chip->oob_poi; + int length = mtd->oobsize; + + chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page); + chip->write_buf(mtd, buf, length); + /* Send command to program the OOB data */ + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + + status = chip->waitfunc(mtd, chip); + + return status; +} + +/** + * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC + * with syndrome - only for large page flash ! + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write + */ +static int nand_write_oob_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, int page) +{ + int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; + int eccsize = chip->ecc.size, length = mtd->oobsize; + int i, len, pos, status = 0, sndcmd = 0, steps = chip->ecc.steps; + const uint8_t *bufpoi = chip->oob_poi; - /* Send the read command */ - this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask); /* - * Read the data, if we read more than one page - * oob data, let the device transfer the data ! + * data-ecc-data-ecc ... ecc-oob + * or + * data-pad-ecc-pad-data-pad .... ecc-pad-oob */ - i = 0; - while (i < len) { - int thislen = mtd->oobsize - col; - thislen = min_t(int, thislen, len); - this->read_buf(mtd, &buf[i], thislen); - i += thislen; - - /* Read more ? */ - if (i < len) { - page++; - col = 0; - - /* Check, if we cross a chip boundary */ - if (!(page & this->pagemask)) { - chipnr++; - this->select_chip(mtd, -1); - this->select_chip(mtd, chipnr); - } - - /* Apply delay or wait for ready/busy pin - * Do this before the AUTOINCR check, so no problems - * arise if a chip which does auto increment - * is marked as NOAUTOINCR by the board driver. - */ - if (!this->dev_ready) - udelay (this->chip_delay); - else - nand_wait_ready(mtd); + if (!chip->ecc.prepad && !chip->ecc.postpad) { + pos = steps * (eccsize + chunk); + steps = 0; + } else + pos = eccsize + chunk; - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. - */ - if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) { - /* For subsequent page reads set offset to 0 */ - this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask); + chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page); + for (i = 0; i < steps; i++) { + if (sndcmd) { + if (mtd->writesize <= 512) { + uint32_t fill = 0xFFFFFFFF; + + len = eccsize; + while (len > 0) { + int num = min_t(int, len, 4); + chip->write_buf(mtd, (uint8_t *)&fill, + num); + len -= num; + } + } else { + pos = eccsize + i * (eccsize + chunk); + chip->cmdfunc(mtd, NAND_CMD_RNDIN, pos, -1); } - } + } else + sndcmd = 1; + len = min_t(int, length, chunk); + chip->write_buf(mtd, bufpoi, len); + bufpoi += len; + length -= len; } + if (length > 0) + chip->write_buf(mtd, bufpoi, length); - /* Deselect and wake up anyone waiting on the device */ - nand_release_device(mtd); + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + status = chip->waitfunc(mtd, chip); - /* Return happy */ - *retlen = len; - return 0; + return status & NAND_STATUS_FAIL ? -EIO : 0; } /** - * nand_read_raw - [GENERIC] Read raw data including oob into buffer + * nand_do_read_oob - [Intern] NAND read out-of-band * @mtd: MTD device structure - * @buf: temporary buffer * @from: offset to read from - * @len: number of bytes to read - * @ooblen: number of oob data bytes to read + * @ops: oob operations description structure * - * Read raw data including oob into buffer + * NAND read out-of-band data from the spare area */ -int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen) +static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { - struct nand_chip *this = mtd->priv; - int page = (int) (from >> this->page_shift); - int chip = (int) (from >> this->chip_shift); - int sndcmd = 1; - int cnt = 0; - int pagesize = mtd->oobblock + mtd->oobsize; - int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; + int page, realpage, chipnr, sndcmd = 1; + struct nand_chip *chip = mtd->priv; + int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; + int readlen = ops->len; + uint8_t *buf = ops->oobbuf; - /* Do not allow reads past end of device */ - if ((from + len) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt read beyond end of device\n"); - return -EINVAL; - } + DEBUG(MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08Lx, len = %i\n", + (unsigned long long)from, readlen); - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd , FL_READING); + chipnr = (int)(from >> chip->chip_shift); + chip->select_chip(mtd, chipnr); - this->select_chip (mtd, chip); + /* Shift to get page */ + realpage = (int)(from >> chip->page_shift); + page = realpage & chip->pagemask; - /* Add requested oob length */ - len += ooblen; + chip->oob_poi = chip->buffers.oobrbuf; - while (len) { - if (sndcmd) - this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask); - sndcmd = 0; + while(1) { + sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); + buf = nand_transfer_oob(chip, buf, ops); - this->read_buf (mtd, &buf[cnt], pagesize); + readlen -= ops->ooblen; + if (!readlen) + break; - len -= pagesize; - cnt += pagesize; - page++; + if (!(chip->options & NAND_NO_READRDY)) { + /* + * Apply delay or wait for ready/busy pin. Do this + * before the AUTOINCR check, so no problems arise if a + * chip which does auto increment is marked as + * NOAUTOINCR by the board driver. + */ + if (!chip->dev_ready) + udelay(chip->chip_delay); + else + nand_wait_ready(mtd); + } - if (!this->dev_ready) - udelay (this->chip_delay); - else - nand_wait_ready(mtd); + /* Increment page address */ + realpage++; - /* Check, if the chip supports auto page increment */ - if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) + page = realpage & chip->pagemask; + /* Check, if we cross a chip boundary */ + if (!page) { + chipnr++; + chip->select_chip(mtd, -1); + chip->select_chip(mtd, chipnr); + } + + /* Check, if the chip supports auto page increment + * or if we have hit a block boundary. + */ + if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) sndcmd = 1; } - /* Deselect and wake up anyone waiting on the device */ - nand_release_device(mtd); + ops->retlen = ops->len; return 0; } - /** - * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer + * nand_read_oob - [MTD Interface] NAND read data and/or out-of-band * @mtd: MTD device structure - * @fsbuf: buffer given by fs driver - * @oobsel: out of band selection structre - * @autoplace: 1 = place given buffer into the oob bytes - * @numpages: number of pages to prepare - * - * Return: - * 1. Filesystem buffer available and autoplacement is off, - * return filesystem buffer - * 2. No filesystem buffer or autoplace is off, return internal - * buffer - * 3. Filesystem buffer is given and autoplace selected - * put data from fs buffer into internal buffer and - * retrun internal buffer - * - * Note: The internal buffer is filled with 0xff. This must - * be done only once, when no autoplacement happens - * Autoplacement sets the buffer dirty flag, which - * forces the 0xff fill before using the buffer again. + * @from: offset to read from + * @ops: oob operation description structure * -*/ -static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel, - int autoplace, int numpages) + * NAND read data and/or out-of-band data + */ +static int nand_read_oob(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { - struct nand_chip *this = mtd->priv; - int i, len, ofs; - - /* Zero copy fs supplied buffer */ - if (fsbuf && !autoplace) - return fsbuf; - - /* Check, if the buffer must be filled with ff again */ - if (this->oobdirty) { - memset (this->oob_buf, 0xff, - mtd->oobsize << (this->phys_erase_shift - this->page_shift)); - this->oobdirty = 0; + int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf) = NULL; + struct nand_chip *chip = mtd->priv; + int ret = -ENOTSUPP; + + ops->retlen = 0; + + /* Do not allow reads past end of device */ + if ((from + ops->len) > mtd->size) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: " + "Attempt read beyond end of device\n"); + return -EINVAL; } - /* If we have no autoplacement or no fs buffer use the internal one */ - if (!autoplace || !fsbuf) - return this->oob_buf; - - /* Walk through the pages and place the data */ - this->oobdirty = 1; - ofs = 0; - while (numpages--) { - for (i = 0, len = 0; len < mtd->oobavail; i++) { - int to = ofs + oobsel->oobfree[i][0]; - int num = oobsel->oobfree[i][1]; - memcpy (&this->oob_buf[to], fsbuf, num); - len += num; - fsbuf += num; - } - ofs += mtd->oobavail; + nand_get_device(chip, mtd, FL_READING); + + switch(ops->mode) { + case MTD_OOB_PLACE: + case MTD_OOB_AUTO: + break; + + case MTD_OOB_RAW: + /* Replace the read_page algorithm temporary */ + read_page = chip->ecc.read_page; + chip->ecc.read_page = nand_read_page_raw; + break; + + default: + goto out; } - return this->oob_buf; + + if (!ops->datbuf) + ret = nand_do_read_oob(mtd, from, ops); + else + ret = nand_do_read_ops(mtd, from, ops); + + if (unlikely(ops->mode == MTD_OOB_RAW)) + chip->ecc.read_page = read_page; + out: + nand_release_device(mtd); + return ret; } -#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0 /** - * nand_write - [MTD Interface] compability function for nand_write_ecc - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write - * - * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL - * -*/ -static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) + * nand_write_page_raw - [Intern] raw page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + */ +static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) { - return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL)); + chip->write_buf(mtd, buf, mtd->writesize); + chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); } /** - * nand_write_ecc - [MTD Interface] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write - * @eccbuf: filesystem supplied oob data buffer - * @oobsel: oob selection structure - * - * NAND write with ECC + * nand_write_page_swecc - {REPLACABLE] software ecc based page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer */ -static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, - size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel) +static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) { - int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr; - int autoplace = 0, numpages, totalpages; - struct nand_chip *this = mtd->priv; - u_char *oobbuf, *bufstart; - int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *ecc_calc = chip->buffers.ecccalc; + const uint8_t *p = buf; + int *eccpos = chip->ecc.layout->eccpos; - DEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + /* Software ecc calculation */ + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) + chip->ecc.calculate(mtd, p, &ecc_calc[i]); - /* Initialize retlen, in case of early exit */ - *retlen = 0; + for (i = 0; i < chip->ecc.total; i++) + chip->oob_poi[eccpos[i]] = ecc_calc[i]; - /* Do not allow write past end of device */ - if ((to + len) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n"); - return -EINVAL; - } + nand_write_page_raw(mtd, chip, buf); +} - /* reject writes, which are not page aligned */ - if (NOTALIGNED (to) || NOTALIGNED(len)) { - printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); - return -EINVAL; +/** + * nand_write_page_hwecc - {REPLACABLE] hardware ecc based page write function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + */ +static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) +{ + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + uint8_t *ecc_calc = chip->buffers.ecccalc; + const uint8_t *p = buf; + int *eccpos = chip->ecc.layout->eccpos; + + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { + chip->ecc.hwctl(mtd, NAND_ECC_WRITE); + chip->write_buf(mtd, p, eccsize); + chip->ecc.calculate(mtd, p, &ecc_calc[i]); } - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_WRITING); + for (i = 0; i < chip->ecc.total; i++) + chip->oob_poi[eccpos[i]] = ecc_calc[i]; - /* Calculate chipnr */ - chipnr = (int)(to >> this->chip_shift); - /* Select the NAND device */ - this->select_chip(mtd, chipnr); + chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); +} - /* Check, if it is write protected */ - if (nand_check_wp(mtd)) - goto out; +/** + * nand_write_page_syndrome - {REPLACABLE] hardware ecc syndrom based page write + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer + * + * The hw generator calculates the error syndrome automatically. Therefor + * we need a special oob layout and handling. + */ +static void nand_write_page_syndrome(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf) +{ + int i, eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + int eccsteps = chip->ecc.steps; + const uint8_t *p = buf; + uint8_t *oob = chip->oob_poi; - /* if oobsel is NULL, use chip defaults */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; + for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) { - /* Autoplace of oob data ? Use the default placement scheme */ - if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { - oobsel = this->autooob; - autoplace = 1; - } - if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) - autoplace = 1; + chip->ecc.hwctl(mtd, NAND_ECC_WRITE); + chip->write_buf(mtd, p, eccsize); - /* Setup variables and oob buffer */ - totalpages = len >> this->page_shift; - page = (int) (to >> this->page_shift); - /* Invalidate the page cache, if we write to the cached page */ - if (page <= this->pagebuf && this->pagebuf < (page + totalpages)) - this->pagebuf = -1; - - /* Set it relative to chip */ - page &= this->pagemask; - startpage = page; - /* Calc number of pages we can write in one go */ - numpages = min (ppblock - (startpage & (ppblock - 1)), totalpages); - oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages); - bufstart = (u_char *)buf; - - /* Loop until all data is written */ - while (written < len) { - - this->data_poi = (u_char*) &buf[written]; - /* Write one page. If this is the last page to write - * or the last page in this block, then use the - * real pageprogram command, else select cached programming - * if supported by the chip. - */ - ret = nand_write_page (mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0)); - if (ret) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret); - goto out; + if (chip->ecc.prepad) { + chip->write_buf(mtd, oob, chip->ecc.prepad); + oob += chip->ecc.prepad; } - /* Next oob page */ - oob += mtd->oobsize; - /* Update written bytes count */ - written += mtd->oobblock; - if (written == len) - goto cmp; - /* Increment page address */ - page++; - - /* Have we hit a block boundary ? Then we have to verify and - * if verify is ok, we have to setup the oob buffer for - * the next pages. - */ - if (!(page & (ppblock - 1))){ - int ofs; - this->data_poi = bufstart; - ret = nand_verify_pages (mtd, this, startpage, - page - startpage, - oobbuf, oobsel, chipnr, (eccbuf != NULL)); - if (ret) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); - goto out; - } - *retlen = written; - - ofs = autoplace ? mtd->oobavail : mtd->oobsize; - if (eccbuf) - eccbuf += (page - startpage) * ofs; - totalpages -= page - startpage; - numpages = min (totalpages, ppblock); - page &= this->pagemask; - startpage = page; - oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, - autoplace, numpages); - oob = 0; - /* Check, if we cross a chip boundary */ - if (!page) { - chipnr++; - this->select_chip(mtd, -1); - this->select_chip(mtd, chipnr); - } + chip->ecc.calculate(mtd, p, oob); + chip->write_buf(mtd, oob, eccbytes); + oob += eccbytes; + + if (chip->ecc.postpad) { + chip->write_buf(mtd, oob, chip->ecc.postpad); + oob += chip->ecc.postpad; } } - /* Verify the remaining pages */ -cmp: - this->data_poi = bufstart; - ret = nand_verify_pages (mtd, this, startpage, totalpages, - oobbuf, oobsel, chipnr, (eccbuf != NULL)); - if (!ret) - *retlen = written; - else - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); -out: - /* Deselect and wake up anyone waiting on the device */ - nand_release_device(mtd); - - return ret; + /* Calculate remaining oob bytes */ + i = mtd->oobsize - (oob - chip->oob_poi); + if (i) + chip->write_buf(mtd, oob, i); } - /** - * nand_write_oob - [MTD Interface] NAND write out-of-band + * nand_write_page - [INTERNAL] write one page * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes + * @chip: NAND chip descriptor * @buf: the data to write - * - * NAND write out-of-band + * @page: page number to write + * @cached: cached programming */ -static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) +static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int page, int cached) { - int column, page, status, ret = -EIO, chipnr; - struct nand_chip *this = mtd->priv; + int status; - DEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page); - /* Shift to get page */ - page = (int) (to >> this->page_shift); - chipnr = (int) (to >> this->chip_shift); + chip->ecc.write_page(mtd, chip, buf); - /* Mask to get column */ - column = to & (mtd->oobsize - 1); + /* + * Cached progamming disabled for now, Not sure if its worth the + * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s) + */ + cached = 0; - /* Initialize return length value */ - *retlen = 0; + if (!cached || !(chip->options & NAND_CACHEPRG)) { - /* Do not allow write past end of page */ - if ((column + len) > mtd->oobsize) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n"); - return -EINVAL; + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + status = chip->waitfunc(mtd, chip); + /* + * See if operation failed and additional status checks are + * available + */ + if ((status & NAND_STATUS_FAIL) && (chip->errstat)) + status = chip->errstat(mtd, chip, FL_WRITING, status, + page); + + if (status & NAND_STATUS_FAIL) + return -EIO; + } else { + chip->cmdfunc(mtd, NAND_CMD_CACHEDPROG, -1, -1); + status = chip->waitfunc(mtd, chip); } - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_WRITING); +#ifdef CONFIG_MTD_NAND_VERIFY_WRITE + /* Send command to read back the data */ + chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); - /* Select the NAND device */ - this->select_chip(mtd, chipnr); + if (chip->verify_buf(mtd, buf, mtd->writesize)) + return -EIO; +#endif + return 0; +} + +/** + * nand_fill_oob - [Internal] Transfer client buffer to oob + * @chip: nand chip structure + * @oob: oob data buffer + * @ops: oob ops structure + */ +static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, + struct mtd_oob_ops *ops) +{ + size_t len = ops->ooblen; + + switch(ops->mode) { + + case MTD_OOB_PLACE: + case MTD_OOB_RAW: + memcpy(chip->oob_poi + ops->ooboffs, oob, len); + return oob + len; + + case MTD_OOB_AUTO: { + struct nand_oobfree *free = chip->ecc.layout->oobfree; + uint32_t boffs = 0, woffs = ops->ooboffs; + size_t bytes = 0; + + for(; free->length && len; free++, len -= bytes) { + /* Write request not from offset 0 ? */ + if (unlikely(woffs)) { + if (woffs >= free->length) { + woffs -= free->length; + continue; + } + boffs = free->offset + woffs; + bytes = min_t(size_t, len, + (free->length - woffs)); + woffs = 0; + } else { + bytes = min_t(size_t, len, free->length); + boffs = free->offset; + } + memcpy(chip->oob_poi + woffs, oob, bytes); + oob += bytes; + } + return oob; + } + default: + BUG(); + } + return NULL; +} + +#define NOTALIGNED(x) (x & (mtd->writesize-1)) != 0 + +/** + * nand_do_write_ops - [Internal] NAND write with ECC + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operations description structure + * + * NAND write with ECC + */ +static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) +{ + int chipnr, realpage, page, blockmask; + struct nand_chip *chip = mtd->priv; + uint32_t writelen = ops->len; + uint8_t *oob = ops->oobbuf; + uint8_t *buf = ops->datbuf; + int bytes = mtd->writesize; + int ret; - /* Reset the chip. Some chips (like the Toshiba TC5832DC found - in one of my DiskOnChip 2000 test units) will clear the whole - data page too if we don't do this. I have no clue why, but - I seem to have 'fixed' it in the doc2000 driver in - August 1999. dwmw2. */ - this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + ops->retlen = 0; + + /* reject writes, which are not page aligned */ + if (NOTALIGNED(to) || NOTALIGNED(ops->len)) { + printk(KERN_NOTICE "nand_write: " + "Attempt to write not page aligned data\n"); + return -EINVAL; + } + + if (!writelen) + return 0; /* Check, if it is write protected */ if (nand_check_wp(mtd)) - goto out; + return -EIO; - /* Invalidate the page cache, if we write to the cached page */ - if (page == this->pagebuf) - this->pagebuf = -1; - - if (NAND_MUST_PAD(this)) { - /* Write out desired data */ - this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask); - /* prepad 0xff for partial programming */ - this->write_buf(mtd, ffchars, column); - /* write data */ - this->write_buf(mtd, buf, len); - /* postpad 0xff for partial programming */ - this->write_buf(mtd, ffchars, mtd->oobsize - (len+column)); - } else { - /* Write out desired data */ - this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask); - /* write data */ - this->write_buf(mtd, buf, len); - } - /* Send command to program the OOB data */ - this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1); + chipnr = (int)(to >> chip->chip_shift); + chip->select_chip(mtd, chipnr); - status = this->waitfunc (mtd, this, FL_WRITING); + realpage = (int)(to >> chip->page_shift); + page = realpage & chip->pagemask; + blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; - /* See if device thinks it succeeded */ - if (status & NAND_STATUS_FAIL) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page); - ret = -EIO; - goto out; - } - /* Return happy */ - *retlen = len; + /* Invalidate the page cache, when we write to the cached page */ + if (to <= (chip->pagebuf << chip->page_shift) && + (chip->pagebuf << chip->page_shift) < (to + ops->len)) + chip->pagebuf = -1; -#ifdef CONFIG_MTD_NAND_VERIFY_WRITE - /* Send command to read back the data */ - this->cmdfunc (mtd, NAND_CMD_READOOB, column, page & this->pagemask); + chip->oob_poi = chip->buffers.oobwbuf; - if (this->verify_buf(mtd, buf, len)) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write verify, page 0x%08x\n", page); - ret = -EIO; - goto out; + while(1) { + int cached = writelen > bytes && page != blockmask; + + if (unlikely(oob)) + oob = nand_fill_oob(chip, oob, ops); + + ret = nand_write_page(mtd, chip, buf, page, cached); + if (ret) + break; + + writelen -= bytes; + if (!writelen) + break; + + buf += bytes; + realpage++; + + page = realpage & chip->pagemask; + /* Check, if we cross a chip boundary */ + if (!page) { + chipnr++; + chip->select_chip(mtd, -1); + chip->select_chip(mtd, chipnr); + } } -#endif - ret = 0; -out: - /* Deselect and wake up anyone waiting on the device */ - nand_release_device(mtd); + if (unlikely(oob)) + memset(chip->oob_poi, 0xff, mtd->oobsize); + + ops->retlen = ops->len - writelen; return ret; } - /** - * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc + * nand_write - [MTD Interface] NAND write with ECC * @mtd: MTD device structure - * @vecs: the iovectors to write - * @count: number of vectors * @to: offset to write to + * @len: number of bytes to write * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write * - * NAND write with kvec. This just calls the ecc function + * NAND write with ECC */ -static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, - loff_t to, size_t * retlen) +static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const uint8_t *buf) { - return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL)); + struct nand_chip *chip = mtd->priv; + int ret; + + /* Do not allow reads past end of device */ + if ((to + len) > mtd->size) + return -EINVAL; + if (!len) + return 0; + + nand_get_device(chip, mtd, FL_WRITING); + + chip->ops.len = len; + chip->ops.datbuf = (uint8_t *)buf; + chip->ops.oobbuf = NULL; + + ret = nand_do_write_ops(mtd, to, &chip->ops); + + nand_release_device(mtd); + + *retlen = chip->ops.retlen; + return ret; } /** - * nand_writev_ecc - [MTD Interface] write with iovec with ecc + * nand_do_write_oob - [MTD Interface] NAND write out-of-band * @mtd: MTD device structure - * @vecs: the iovectors to write - * @count: number of vectors * @to: offset to write to - * @retlen: pointer to variable to store the number of written bytes - * @eccbuf: filesystem supplied oob data buffer - * @oobsel: oob selection structure + * @ops: oob operation description structure * - * NAND write with iovec with ecc + * NAND write out-of-band */ -static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, - loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel) +static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) { - int i, page, len, total_len, ret = -EIO, written = 0, chipnr; - int oob, numpages, autoplace = 0, startpage; - struct nand_chip *this = mtd->priv; - int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); - u_char *oobbuf, *bufstart; - - /* Preset written len for early exit */ - *retlen = 0; - - /* Calculate total length of data */ - total_len = 0; - for (i = 0; i < count; i++) - total_len += (int) vecs[i].iov_len; + int chipnr, page, status; + struct nand_chip *chip = mtd->priv; - DEBUG (MTD_DEBUG_LEVEL3, - "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count); + DEBUG(MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", + (unsigned int)to, (int)ops->len); /* Do not allow write past end of page */ - if ((to + total_len) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n"); + if ((ops->ooboffs + ops->len) > mtd->oobsize) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: " + "Attempt to write past end of page\n"); return -EINVAL; } - /* reject writes, which are not page aligned */ - if (NOTALIGNED (to) || NOTALIGNED(total_len)) { - printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); - return -EINVAL; - } + chipnr = (int)(to >> chip->chip_shift); + chip->select_chip(mtd, chipnr); - /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_WRITING); + /* Shift to get page */ + page = (int)(to >> chip->page_shift); - /* Get the current chip-nr */ - chipnr = (int) (to >> this->chip_shift); - /* Select the NAND device */ - this->select_chip(mtd, chipnr); + /* + * Reset the chip. Some chips (like the Toshiba TC5832DC found in one + * of my DiskOnChip 2000 test units) will clear the whole data page too + * if we don't do this. I have no clue why, but I seem to have 'fixed' + * it in the doc2000 driver in August 1999. dwmw2. + */ + chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); /* Check, if it is write protected */ if (nand_check_wp(mtd)) - goto out; + return -EROFS; - /* if oobsel is NULL, use chip defaults */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; + /* Invalidate the page cache, if we write to the cached page */ + if (page == chip->pagebuf) + chip->pagebuf = -1; - /* Autoplace of oob data ? Use the default placement scheme */ - if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { - oobsel = this->autooob; - autoplace = 1; - } - if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) - autoplace = 1; + chip->oob_poi = chip->buffers.oobwbuf; + memset(chip->oob_poi, 0xff, mtd->oobsize); + nand_fill_oob(chip, ops->oobbuf, ops); + status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); + memset(chip->oob_poi, 0xff, mtd->oobsize); - /* Setup start page */ - page = (int) (to >> this->page_shift); - /* Invalidate the page cache, if we write to the cached page */ - if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift)) - this->pagebuf = -1; + if (status) + return status; - startpage = page & this->pagemask; + ops->retlen = ops->len; - /* Loop until all kvec' data has been written */ - len = 0; - while (count) { - /* If the given tuple is >= pagesize then - * write it out from the iov - */ - if ((vecs->iov_len - len) >= mtd->oobblock) { - /* Calc number of pages we can write - * out of this iov in one go */ - numpages = (vecs->iov_len - len) >> this->page_shift; - /* Do not cross block boundaries */ - numpages = min (ppblock - (startpage & (ppblock - 1)), numpages); - oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); - bufstart = (u_char *)vecs->iov_base; - bufstart += len; - this->data_poi = bufstart; - oob = 0; - for (i = 1; i <= numpages; i++) { - /* Write one page. If this is the last page to write - * then use the real pageprogram command, else select - * cached programming if supported by the chip. - */ - ret = nand_write_page (mtd, this, page & this->pagemask, - &oobbuf[oob], oobsel, i != numpages); - if (ret) - goto out; - this->data_poi += mtd->oobblock; - len += mtd->oobblock; - oob += mtd->oobsize; - page++; - } - /* Check, if we have to switch to the next tuple */ - if (len >= (int) vecs->iov_len) { - vecs++; - len = 0; - count--; - } - } else { - /* We must use the internal buffer, read data out of each - * tuple until we have a full page to write - */ - int cnt = 0; - while (cnt < mtd->oobblock) { - if (vecs->iov_base != NULL && vecs->iov_len) - this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++]; - /* Check, if we have to switch to the next tuple */ - if (len >= (int) vecs->iov_len) { - vecs++; - len = 0; - count--; - } - } - this->pagebuf = page; - this->data_poi = this->data_buf; - bufstart = this->data_poi; - numpages = 1; - oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); - ret = nand_write_page (mtd, this, page & this->pagemask, - oobbuf, oobsel, 0); - if (ret) - goto out; - page++; - } + return 0; +} - this->data_poi = bufstart; - ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0); - if (ret) - goto out; +/** + * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operation description structure + */ +static int nand_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) +{ + void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf) = NULL; + struct nand_chip *chip = mtd->priv; + int ret = -ENOTSUPP; - written += mtd->oobblock * numpages; - /* All done ? */ - if (!count) - break; + ops->retlen = 0; - startpage = page & this->pagemask; - /* Check, if we cross a chip boundary */ - if (!startpage) { - chipnr++; - this->select_chip(mtd, -1); - this->select_chip(mtd, chipnr); - } + /* Do not allow writes past end of device */ + if ((to + ops->len) > mtd->size) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: " + "Attempt read beyond end of device\n"); + return -EINVAL; } - ret = 0; -out: - /* Deselect and wake up anyone waiting on the device */ - nand_release_device(mtd); - *retlen = written; + nand_get_device(chip, mtd, FL_WRITING); + + switch(ops->mode) { + case MTD_OOB_PLACE: + case MTD_OOB_AUTO: + break; + + case MTD_OOB_RAW: + /* Replace the write_page algorithm temporary */ + write_page = chip->ecc.write_page; + chip->ecc.write_page = nand_write_page_raw; + break; + + default: + goto out; + } + + if (!ops->datbuf) + ret = nand_do_write_oob(mtd, to, ops); + else + ret = nand_do_write_ops(mtd, to, ops); + + if (unlikely(ops->mode == MTD_OOB_RAW)) + chip->ecc.write_page = write_page; + out: + nand_release_device(mtd); return ret; } @@ -2050,12 +1816,12 @@ out: * * Standard erase command for NAND chips */ -static void single_erase_cmd (struct mtd_info *mtd, int page) +static void single_erase_cmd(struct mtd_info *mtd, int page) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; /* Send commands to erase a block */ - this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); - this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page); + chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1); } /** @@ -2066,15 +1832,15 @@ static void single_erase_cmd (struct mtd_info *mtd, int page) * AND multi block erase command function * Erase 4 consecutive blocks */ -static void multi_erase_cmd (struct mtd_info *mtd, int page) +static void multi_erase_cmd(struct mtd_info *mtd, int page) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; /* Send commands to erase a block */ - this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); - this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); - this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); - this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); - this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page); + chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1); } /** @@ -2084,79 +1850,82 @@ static void multi_erase_cmd (struct mtd_info *mtd, int page) * * Erase one ore more blocks */ -static int nand_erase (struct mtd_info *mtd, struct erase_info *instr) +static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) { - return nand_erase_nand (mtd, instr, 0); + return nand_erase_nand(mtd, instr, 0); } #define BBT_PAGE_MASK 0xffffff3f /** - * nand_erase_intern - [NAND Interface] erase block(s) + * nand_erase_nand - [Internal] erase block(s) * @mtd: MTD device structure * @instr: erase instruction * @allowbbt: allow erasing the bbt area * * Erase one ore more blocks */ -int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt) +int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, + int allowbbt) { int page, len, status, pages_per_block, ret, chipnr; - struct nand_chip *this = mtd->priv; - int rewrite_bbt[NAND_MAX_CHIPS]={0}; /* flags to indicate the page, if bbt needs to be rewritten. */ - unsigned int bbt_masked_page; /* bbt mask to compare to page being erased. */ - /* It is used to see if the current page is in the same */ - /* 256 block group and the same bank as the bbt. */ + struct nand_chip *chip = mtd->priv; + int rewrite_bbt[NAND_MAX_CHIPS]={0}; + unsigned int bbt_masked_page = 0xffffffff; - DEBUG (MTD_DEBUG_LEVEL3, - "nand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len); + DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n", + (unsigned int)instr->addr, (unsigned int)instr->len); /* Start address must align on block boundary */ - if (instr->addr & ((1 << this->phys_erase_shift) - 1)) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n"); + if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n"); return -EINVAL; } /* Length must align on block boundary */ - if (instr->len & ((1 << this->phys_erase_shift) - 1)) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n"); + if (instr->len & ((1 << chip->phys_erase_shift) - 1)) { + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: " + "Length not block aligned\n"); return -EINVAL; } /* Do not allow erase past end of device */ if ((instr->len + instr->addr) > mtd->size) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n"); + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: " + "Erase past end of device\n"); return -EINVAL; } instr->fail_addr = 0xffffffff; /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_ERASING); + nand_get_device(chip, mtd, FL_ERASING); /* Shift to get first page */ - page = (int) (instr->addr >> this->page_shift); - chipnr = (int) (instr->addr >> this->chip_shift); + page = (int)(instr->addr >> chip->page_shift); + chipnr = (int)(instr->addr >> chip->chip_shift); /* Calculate pages in each block */ - pages_per_block = 1 << (this->phys_erase_shift - this->page_shift); + pages_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); /* Select the NAND device */ - this->select_chip(mtd, chipnr); + chip->select_chip(mtd, chipnr); - /* Check the WP bit */ /* Check, if it is write protected */ if (nand_check_wp(mtd)) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n"); + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: " + "Device is write protected!!!\n"); instr->state = MTD_ERASE_FAILED; goto erase_exit; } - /* if BBT requires refresh, set the BBT page mask to see if the BBT should be rewritten */ - if (this->options & BBT_AUTO_REFRESH) { - bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK; - } else { - bbt_masked_page = 0xffffffff; /* should not match anything */ - } + /* + * If BBT requires refresh, set the BBT page mask to see if the BBT + * should be rewritten. Otherwise the mask is set to 0xffffffff which + * can not be matched. This is also done when the bbt is actually + * erased to avoid recusrsive updates + */ + if (chip->options & BBT_AUTO_REFRESH && !allowbbt) + bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK; /* Loop through the pages */ len = instr->len; @@ -2164,64 +1933,77 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb instr->state = MTD_ERASING; while (len) { - /* Check if we have a bad block, we do not erase bad blocks ! */ - if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) { - printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page); + /* + * heck if we have a bad block, we do not erase bad blocks ! + */ + if (nand_block_checkbad(mtd, ((loff_t) page) << + chip->page_shift, 0, allowbbt)) { + printk(KERN_WARNING "nand_erase: attempt to erase a " + "bad block at page 0x%08x\n", page); instr->state = MTD_ERASE_FAILED; goto erase_exit; } - /* Invalidate the page cache, if we erase the block which contains - the current cached page */ - if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block)) - this->pagebuf = -1; + /* + * Invalidate the page cache, if we erase the block which + * contains the current cached page + */ + if (page <= chip->pagebuf && chip->pagebuf < + (page + pages_per_block)) + chip->pagebuf = -1; - this->erase_cmd (mtd, page & this->pagemask); + chip->erase_cmd(mtd, page & chip->pagemask); - status = this->waitfunc (mtd, this, FL_ERASING); + status = chip->waitfunc(mtd, chip); - /* See if operation failed and additional status checks are available */ - if ((status & NAND_STATUS_FAIL) && (this->errstat)) { - status = this->errstat(mtd, this, FL_ERASING, status, page); - } + /* + * See if operation failed and additional status checks are + * available + */ + if ((status & NAND_STATUS_FAIL) && (chip->errstat)) + status = chip->errstat(mtd, chip, FL_ERASING, + status, page); /* See if block erase succeeded */ if (status & NAND_STATUS_FAIL) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page); + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: " + "Failed erase, page 0x%08x\n", page); instr->state = MTD_ERASE_FAILED; - instr->fail_addr = (page << this->page_shift); + instr->fail_addr = (page << chip->page_shift); goto erase_exit; } - /* if BBT requires refresh, set the BBT rewrite flag to the page being erased */ - if (this->options & BBT_AUTO_REFRESH) { - if (((page & BBT_PAGE_MASK) == bbt_masked_page) && - (page != this->bbt_td->pages[chipnr])) { - rewrite_bbt[chipnr] = (page << this->page_shift); - } - } + /* + * If BBT requires refresh, set the BBT rewrite flag to the + * page being erased + */ + if (bbt_masked_page != 0xffffffff && + (page & BBT_PAGE_MASK) == bbt_masked_page) + rewrite_bbt[chipnr] = (page << chip->page_shift); /* Increment page address and decrement length */ - len -= (1 << this->phys_erase_shift); + len -= (1 << chip->phys_erase_shift); page += pages_per_block; /* Check, if we cross a chip boundary */ - if (len && !(page & this->pagemask)) { + if (len && !(page & chip->pagemask)) { chipnr++; - this->select_chip(mtd, -1); - this->select_chip(mtd, chipnr); - - /* if BBT requires refresh and BBT-PERCHIP, - * set the BBT page mask to see if this BBT should be rewritten */ - if ((this->options & BBT_AUTO_REFRESH) && (this->bbt_td->options & NAND_BBT_PERCHIP)) { - bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK; - } + chip->select_chip(mtd, -1); + chip->select_chip(mtd, chipnr); + /* + * If BBT requires refresh and BBT-PERCHIP, set the BBT + * page mask to see if this BBT should be rewritten + */ + if (bbt_masked_page != 0xffffffff && + (chip->bbt_td->options & NAND_BBT_PERCHIP)) + bbt_masked_page = chip->bbt_td->pages[chipnr] & + BBT_PAGE_MASK; } } instr->state = MTD_ERASE_DONE; -erase_exit: + erase_exit: ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; /* Do call back function */ @@ -2231,16 +2013,21 @@ erase_exit: /* Deselect and wake up anyone waiting on the device */ nand_release_device(mtd); - /* if BBT requires refresh and erase was successful, rewrite any selected bad block tables */ - if ((this->options & BBT_AUTO_REFRESH) && (!ret)) { - for (chipnr = 0; chipnr < this->numchips; chipnr++) { - if (rewrite_bbt[chipnr]) { - /* update the BBT for chip */ - DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n", - chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]); - nand_update_bbt (mtd, rewrite_bbt[chipnr]); - } - } + /* + * If BBT requires refresh and erase was successful, rewrite any + * selected bad block tables + */ + if (bbt_masked_page == 0xffffffff || ret) + return ret; + + for (chipnr = 0; chipnr < chip->numchips; chipnr++) { + if (!rewrite_bbt[chipnr]) + continue; + /* update the BBT for chip */ + DEBUG(MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt " + "(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr], + chip->bbt_td->pages[chipnr]); + nand_update_bbt(mtd, rewrite_bbt[chipnr]); } /* Return more or less happy */ @@ -2253,51 +2040,50 @@ erase_exit: * * Sync is actually a wait for chip ready function */ -static void nand_sync (struct mtd_info *mtd) +static void nand_sync(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - DEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n"); + DEBUG(MTD_DEBUG_LEVEL3, "nand_sync: called\n"); /* Grab the lock and see if the device is available */ - nand_get_device (this, mtd, FL_SYNCING); + nand_get_device(chip, mtd, FL_SYNCING); /* Release it and go back */ - nand_release_device (mtd); + nand_release_device(mtd); } - /** - * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad + * nand_block_isbad - [MTD Interface] Check if block at offset is bad * @mtd: MTD device structure * @ofs: offset relative to mtd start */ -static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs) +static int nand_block_isbad(struct mtd_info *mtd, loff_t offs) { /* Check for invalid offset */ - if (ofs > mtd->size) + if (offs > mtd->size) return -EINVAL; - return nand_block_checkbad (mtd, ofs, 1, 0); + return nand_block_checkbad(mtd, offs, 1, 0); } /** - * nand_block_markbad - [MTD Interface] Mark the block at the given offset as bad + * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad * @mtd: MTD device structure * @ofs: offset relative to mtd start */ -static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs) +static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; int ret; - if ((ret = nand_block_isbad(mtd, ofs))) { - /* If it was bad already, return success and do nothing. */ + if ((ret = nand_block_isbad(mtd, ofs))) { + /* If it was bad already, return success and do nothing. */ if (ret > 0) return 0; - return ret; - } + return ret; + } - return this->block_markbad(mtd, ofs); + return chip->block_markbad(mtd, ofs); } /** @@ -2306,9 +2092,9 @@ static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs) */ static int nand_suspend(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - return nand_get_device (this, mtd, FL_PM_SUSPENDED); + return nand_get_device(chip, mtd, FL_PM_SUSPENDED); } /** @@ -2317,373 +2103,385 @@ static int nand_suspend(struct mtd_info *mtd) */ static void nand_resume(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; - if (this->state == FL_PM_SUSPENDED) + if (chip->state == FL_PM_SUSPENDED) nand_release_device(mtd); else - printk(KERN_ERR "resume() called for the chip which is not " - "in suspended state\n"); - + printk(KERN_ERR "nand_resume() called for a chip which is not " + "in suspended state\n"); } - -/** - * nand_scan - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure - * @maxchips: Number of chips to scan for - * - * This fills out all the not initialized function pointers - * with the defaults. - * The flash ID is read and the mtd/chip structures are - * filled with the appropriate values. Buffers are allocated if - * they are not provided by the board driver - * +/* + * Set default functions */ -int nand_scan (struct mtd_info *mtd, int maxchips) +static void nand_set_defaults(struct nand_chip *chip, int busw) { - int i, nand_maf_id, nand_dev_id, busw, maf_id; - struct nand_chip *this = mtd->priv; - - /* Get buswidth to select the correct functions*/ - busw = this->options & NAND_BUSWIDTH_16; - /* check for proper chip_delay setup, set 20us if not */ - if (!this->chip_delay) - this->chip_delay = 20; + if (!chip->chip_delay) + chip->chip_delay = 20; /* check, if a user supplied command function given */ - if (this->cmdfunc == NULL) - this->cmdfunc = nand_command; + if (chip->cmdfunc == NULL) + chip->cmdfunc = nand_command; /* check, if a user supplied wait function given */ - if (this->waitfunc == NULL) - this->waitfunc = nand_wait; - - if (!this->select_chip) - this->select_chip = nand_select_chip; - if (!this->write_byte) - this->write_byte = busw ? nand_write_byte16 : nand_write_byte; - if (!this->read_byte) - this->read_byte = busw ? nand_read_byte16 : nand_read_byte; - if (!this->write_word) - this->write_word = nand_write_word; - if (!this->read_word) - this->read_word = nand_read_word; - if (!this->block_bad) - this->block_bad = nand_block_bad; - if (!this->block_markbad) - this->block_markbad = nand_default_block_markbad; - if (!this->write_buf) - this->write_buf = busw ? nand_write_buf16 : nand_write_buf; - if (!this->read_buf) - this->read_buf = busw ? nand_read_buf16 : nand_read_buf; - if (!this->verify_buf) - this->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf; - if (!this->scan_bbt) - this->scan_bbt = nand_default_bbt; + if (chip->waitfunc == NULL) + chip->waitfunc = nand_wait; + + if (!chip->select_chip) + chip->select_chip = nand_select_chip; + if (!chip->read_byte) + chip->read_byte = busw ? nand_read_byte16 : nand_read_byte; + if (!chip->read_word) + chip->read_word = nand_read_word; + if (!chip->block_bad) + chip->block_bad = nand_block_bad; + if (!chip->block_markbad) + chip->block_markbad = nand_default_block_markbad; + if (!chip->write_buf) + chip->write_buf = busw ? nand_write_buf16 : nand_write_buf; + if (!chip->read_buf) + chip->read_buf = busw ? nand_read_buf16 : nand_read_buf; + if (!chip->verify_buf) + chip->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf; + if (!chip->scan_bbt) + chip->scan_bbt = nand_default_bbt; + + if (!chip->controller) { + chip->controller = &chip->hwcontrol; + spin_lock_init(&chip->controller->lock); + init_waitqueue_head(&chip->controller->wq); + } + +} + +/* + * Get the flash and manufacturer id and lookup if the type is supported + */ +static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, + struct nand_chip *chip, + int busw, int *maf_id) +{ + struct nand_flash_dev *type = NULL; + int i, dev_id, maf_idx; /* Select the device */ - this->select_chip(mtd, 0); + chip->select_chip(mtd, 0); /* Send the command for reading device ID */ - this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); + chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); /* Read manufacturer and device IDs */ - nand_maf_id = this->read_byte(mtd); - nand_dev_id = this->read_byte(mtd); + *maf_id = chip->read_byte(mtd); + dev_id = chip->read_byte(mtd); - /* Print and store flash device information */ + /* Lookup the flash id */ for (i = 0; nand_flash_ids[i].name != NULL; i++) { + if (dev_id == nand_flash_ids[i].id) { + type = &nand_flash_ids[i]; + break; + } + } - if (nand_dev_id != nand_flash_ids[i].id) - continue; + if (!type) + return ERR_PTR(-ENODEV); + + if (!mtd->name) + mtd->name = type->name; + + chip->chipsize = type->chipsize << 20; + + /* Newer devices have all the information in additional id bytes */ + if (!type->pagesize) { + int extid; + /* The 3rd id byte contains non relevant data ATM */ + extid = chip->read_byte(mtd); + /* The 4th id byte is the important one */ + extid = chip->read_byte(mtd); + /* Calc pagesize */ + mtd->writesize = 1024 << (extid & 0x3); + extid >>= 2; + /* Calc oobsize */ + mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9); + extid >>= 2; + /* Calc blocksize. Blocksize is multiples of 64KiB */ + mtd->erasesize = (64 * 1024) << (extid & 0x03); + extid >>= 2; + /* Get buswidth information */ + busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; - if (!mtd->name) mtd->name = nand_flash_ids[i].name; - this->chipsize = nand_flash_ids[i].chipsize << 20; - - /* New devices have all the information in additional id bytes */ - if (!nand_flash_ids[i].pagesize) { - int extid; - /* The 3rd id byte contains non relevant data ATM */ - extid = this->read_byte(mtd); - /* The 4th id byte is the important one */ - extid = this->read_byte(mtd); - /* Calc pagesize */ - mtd->oobblock = 1024 << (extid & 0x3); - extid >>= 2; - /* Calc oobsize */ - mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9); - extid >>= 2; - /* Calc blocksize. Blocksize is multiples of 64KiB */ - mtd->erasesize = (64 * 1024) << (extid & 0x03); - extid >>= 2; - /* Get buswidth information */ - busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; + } else { + /* + * Old devices have chip data hardcoded in the device id table + */ + mtd->erasesize = type->erasesize; + mtd->writesize = type->pagesize; + mtd->oobsize = mtd->writesize / 32; + busw = type->options & NAND_BUSWIDTH_16; + } - } else { - /* Old devices have this data hardcoded in the - * device id table */ - mtd->erasesize = nand_flash_ids[i].erasesize; - mtd->oobblock = nand_flash_ids[i].pagesize; - mtd->oobsize = mtd->oobblock / 32; - busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16; - } + /* Try to identify manufacturer */ + for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_id++) { + if (nand_manuf_ids[maf_idx].id == *maf_id) + break; + } - /* Try to identify manufacturer */ - for (maf_id = 0; nand_manuf_ids[maf_id].id != 0x0; maf_id++) { - if (nand_manuf_ids[maf_id].id == nand_maf_id) - break; - } + /* + * Check, if buswidth is correct. Hardware drivers should set + * chip correct ! + */ + if (busw != (chip->options & NAND_BUSWIDTH_16)) { + printk(KERN_INFO "NAND device: Manufacturer ID:" + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, + dev_id, nand_manuf_ids[maf_idx].name, mtd->name); + printk(KERN_WARNING "NAND bus width %d instead %d bit\n", + (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, + busw ? 16 : 8); + return ERR_PTR(-EINVAL); + } - /* Check, if buswidth is correct. Hardware drivers should set - * this correct ! */ - if (busw != (this->options & NAND_BUSWIDTH_16)) { - printk (KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, - nand_manuf_ids[maf_id].name , mtd->name); - printk (KERN_WARNING - "NAND bus width %d instead %d bit\n", - (this->options & NAND_BUSWIDTH_16) ? 16 : 8, - busw ? 16 : 8); - this->select_chip(mtd, -1); - return 1; - } + /* Calculate the address shift from the page size */ + chip->page_shift = ffs(mtd->writesize) - 1; + /* Convert chipsize to number of pages per chip -1. */ + chip->pagemask = (chip->chipsize >> chip->page_shift) - 1; - /* Calculate the address shift from the page size */ - this->page_shift = ffs(mtd->oobblock) - 1; - this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1; - this->chip_shift = ffs(this->chipsize) - 1; - - /* Set the bad block position */ - this->badblockpos = mtd->oobblock > 512 ? - NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS; - - /* Get chip options, preserve non chip based options */ - this->options &= ~NAND_CHIPOPTIONS_MSK; - this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK; - /* Set this as a default. Board drivers can override it, if neccecary */ - this->options |= NAND_NO_AUTOINCR; - /* Check if this is a not a samsung device. Do not clear the options - * for chips which are not having an extended id. - */ - if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize) - this->options &= ~NAND_SAMSUNG_LP_OPTIONS; + chip->bbt_erase_shift = chip->phys_erase_shift = + ffs(mtd->erasesize) - 1; + chip->chip_shift = ffs(chip->chipsize) - 1; - /* Check for AND chips with 4 page planes */ - if (this->options & NAND_4PAGE_ARRAY) - this->erase_cmd = multi_erase_cmd; - else - this->erase_cmd = single_erase_cmd; + /* Set the bad block position */ + chip->badblockpos = mtd->writesize > 512 ? + NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS; - /* Do not replace user supplied command function ! */ - if (mtd->oobblock > 512 && this->cmdfunc == nand_command) - this->cmdfunc = nand_command_lp; + /* Get chip options, preserve non chip based options */ + chip->options &= ~NAND_CHIPOPTIONS_MSK; + chip->options |= type->options & NAND_CHIPOPTIONS_MSK; - printk (KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, - nand_manuf_ids[maf_id].name , nand_flash_ids[i].name); - break; - } + /* + * Set chip as a default. Board drivers can override it, if necessary + */ + chip->options |= NAND_NO_AUTOINCR; + + /* Check if chip is a not a samsung device. Do not clear the + * options for chips which are not having an extended id. + */ + if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) + chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; + + /* Check for AND chips with 4 page planes */ + if (chip->options & NAND_4PAGE_ARRAY) + chip->erase_cmd = multi_erase_cmd; + else + chip->erase_cmd = single_erase_cmd; + + /* Do not replace user supplied command function ! */ + if (mtd->writesize > 512 && chip->cmdfunc == nand_command) + chip->cmdfunc = nand_command_lp; + + printk(KERN_INFO "NAND device: Manufacturer ID:" + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, dev_id, + nand_manuf_ids[maf_idx].name, type->name); + + return type; +} + +/* module_text_address() isn't exported, and it's mostly a pointless + test if this is a module _anyway_ -- they'd have to try _really_ hard + to call us from in-kernel code if the core NAND support is modular. */ +#ifdef MODULE +#define caller_is_module() (1) +#else +#define caller_is_module() \ + module_text_address((unsigned long)__builtin_return_address(0)) +#endif - if (!nand_flash_ids[i].name) { - printk (KERN_WARNING "No NAND device found!!!\n"); - this->select_chip(mtd, -1); - return 1; +/** + * nand_scan - [NAND Interface] Scan for the NAND device + * @mtd: MTD device structure + * @maxchips: Number of chips to scan for + * + * This fills out all the uninitialized function pointers + * with the defaults. + * The flash ID is read and the mtd/chip structures are + * filled with the appropriate values. + * The mtd->owner field must be set to the module of the caller + * + */ +int nand_scan(struct mtd_info *mtd, int maxchips) +{ + int i, busw, nand_maf_id; + struct nand_chip *chip = mtd->priv; + struct nand_flash_dev *type; + + /* Many callers got this wrong, so check for it for a while... */ + if (!mtd->owner && caller_is_module()) { + printk(KERN_CRIT "nand_scan() called with NULL mtd->owner!\n"); + BUG(); } - for (i=1; i < maxchips; i++) { - this->select_chip(mtd, i); + /* Get buswidth to select the correct functions */ + busw = chip->options & NAND_BUSWIDTH_16; + /* Set the default functions */ + nand_set_defaults(chip, busw); - /* Send the command for reading device ID */ - this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); + /* Read the flash type */ + type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id); + + if (IS_ERR(type)) { + printk(KERN_WARNING "No NAND device found!!!\n"); + chip->select_chip(mtd, -1); + return PTR_ERR(type); + } + /* Check for a chip array */ + for (i = 1; i < maxchips; i++) { + chip->select_chip(mtd, i); + /* Send the command for reading device ID */ + chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); /* Read manufacturer and device IDs */ - if (nand_maf_id != this->read_byte(mtd) || - nand_dev_id != this->read_byte(mtd)) + if (nand_maf_id != chip->read_byte(mtd) || + type->id != chip->read_byte(mtd)) break; } if (i > 1) printk(KERN_INFO "%d NAND chips detected\n", i); - /* Allocate buffers, if neccecary */ - if (!this->oob_buf) { - size_t len; - len = mtd->oobsize << (this->phys_erase_shift - this->page_shift); - this->oob_buf = kmalloc (len, GFP_KERNEL); - if (!this->oob_buf) { - printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n"); - return -ENOMEM; - } - this->options |= NAND_OOBBUF_ALLOC; - } + /* Store the number of chips and calc total size for mtd */ + chip->numchips = i; + mtd->size = i * chip->chipsize; - if (!this->data_buf) { - size_t len; - len = mtd->oobblock + mtd->oobsize; - this->data_buf = kmalloc (len, GFP_KERNEL); - if (!this->data_buf) { - if (this->options & NAND_OOBBUF_ALLOC) - kfree (this->oob_buf); - printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n"); - return -ENOMEM; - } - this->options |= NAND_DATABUF_ALLOC; - } + /* Preset the internal oob write buffer */ + memset(chip->buffers.oobwbuf, 0xff, mtd->oobsize); - /* Store the number of chips and calc total size for mtd */ - this->numchips = i; - mtd->size = i * this->chipsize; - /* Convert chipsize to number of pages per chip -1. */ - this->pagemask = (this->chipsize >> this->page_shift) - 1; - /* Preset the internal oob buffer */ - memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift)); - - /* If no default placement scheme is given, select an - * appropriate one */ - if (!this->autooob) { - /* Select the appropriate default oob placement scheme for - * placement agnostic filesystems */ + /* + * If no default placement scheme is given, select an appropriate one + */ + if (!chip->ecc.layout) { switch (mtd->oobsize) { case 8: - this->autooob = &nand_oob_8; + chip->ecc.layout = &nand_oob_8; break; case 16: - this->autooob = &nand_oob_16; + chip->ecc.layout = &nand_oob_16; break; case 64: - this->autooob = &nand_oob_64; + chip->ecc.layout = &nand_oob_64; break; default: - printk (KERN_WARNING "No oob scheme defined for oobsize %d\n", - mtd->oobsize); + printk(KERN_WARNING "No oob scheme defined for " + "oobsize %d\n", mtd->oobsize); BUG(); } } - /* The number of bytes available for the filesystem to place fs dependend - * oob data */ - mtd->oobavail = 0; - for (i = 0; this->autooob->oobfree[i][1]; i++) - mtd->oobavail += this->autooob->oobfree[i][1]; - /* - * check ECC mode, default to software - * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize - * fallback to software ECC - */ - this->eccsize = 256; /* set default eccsize */ - this->eccbytes = 3; - - switch (this->eccmode) { - case NAND_ECC_HW12_2048: - if (mtd->oobblock < 2048) { - printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n", - mtd->oobblock); - this->eccmode = NAND_ECC_SOFT; - this->calculate_ecc = nand_calculate_ecc; - this->correct_data = nand_correct_data; - } else - this->eccsize = 2048; - break; - - case NAND_ECC_HW3_512: - case NAND_ECC_HW6_512: - case NAND_ECC_HW8_512: - if (mtd->oobblock == 256) { - printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n"); - this->eccmode = NAND_ECC_SOFT; - this->calculate_ecc = nand_calculate_ecc; - this->correct_data = nand_correct_data; - } else - this->eccsize = 512; /* set eccsize to 512 */ - break; + * check ECC mode, default to software if 3byte/512byte hardware ECC is + * selected and we have 256 byte pagesize fallback to software ECC + */ + switch (chip->ecc.mode) { + case NAND_ECC_HW: + /* Use standard hwecc read page function ? */ + if (!chip->ecc.read_page) + chip->ecc.read_page = nand_read_page_hwecc; + if (!chip->ecc.write_page) + chip->ecc.write_page = nand_write_page_hwecc; + if (!chip->ecc.read_oob) + chip->ecc.read_oob = nand_read_oob_std; + if (!chip->ecc.write_oob) + chip->ecc.write_oob = nand_write_oob_std; + + case NAND_ECC_HW_SYNDROME: + if (!chip->ecc.calculate || !chip->ecc.correct || + !chip->ecc.hwctl) { + printk(KERN_WARNING "No ECC functions supplied, " + "Hardware ECC not possible\n"); + BUG(); + } + /* Use standard syndrome read/write page function ? */ + if (!chip->ecc.read_page) + chip->ecc.read_page = nand_read_page_syndrome; + if (!chip->ecc.write_page) + chip->ecc.write_page = nand_write_page_syndrome; + if (!chip->ecc.read_oob) + chip->ecc.read_oob = nand_read_oob_syndrome; + if (!chip->ecc.write_oob) + chip->ecc.write_oob = nand_write_oob_syndrome; + + if (mtd->writesize >= chip->ecc.size) + break; + printk(KERN_WARNING "%d byte HW ECC not possible on " + "%d byte page size, fallback to SW ECC\n", + chip->ecc.size, mtd->writesize); + chip->ecc.mode = NAND_ECC_SOFT; - case NAND_ECC_HW3_256: + case NAND_ECC_SOFT: + chip->ecc.calculate = nand_calculate_ecc; + chip->ecc.correct = nand_correct_data; + chip->ecc.read_page = nand_read_page_swecc; + chip->ecc.write_page = nand_write_page_swecc; + chip->ecc.read_oob = nand_read_oob_std; + chip->ecc.write_oob = nand_write_oob_std; + chip->ecc.size = 256; + chip->ecc.bytes = 3; break; case NAND_ECC_NONE: - printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n"); - this->eccmode = NAND_ECC_NONE; + printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. " + "This is not recommended !!\n"); + chip->ecc.read_page = nand_read_page_raw; + chip->ecc.write_page = nand_write_page_raw; + chip->ecc.read_oob = nand_read_oob_std; + chip->ecc.write_oob = nand_write_oob_std; + chip->ecc.size = mtd->writesize; + chip->ecc.bytes = 0; break; - - case NAND_ECC_SOFT: - this->calculate_ecc = nand_calculate_ecc; - this->correct_data = nand_correct_data; - break; - default: - printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode); - BUG(); - } - - /* Check hardware ecc function availability and adjust number of ecc bytes per - * calculation step - */ - switch (this->eccmode) { - case NAND_ECC_HW12_2048: - this->eccbytes += 4; - case NAND_ECC_HW8_512: - this->eccbytes += 2; - case NAND_ECC_HW6_512: - this->eccbytes += 3; - case NAND_ECC_HW3_512: - case NAND_ECC_HW3_256: - if (this->calculate_ecc && this->correct_data && this->enable_hwecc) - break; - printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n"); + printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n", + chip->ecc.mode); BUG(); } - mtd->eccsize = this->eccsize; - - /* Set the number of read / write steps for one page to ensure ECC generation */ - switch (this->eccmode) { - case NAND_ECC_HW12_2048: - this->eccsteps = mtd->oobblock / 2048; - break; - case NAND_ECC_HW3_512: - case NAND_ECC_HW6_512: - case NAND_ECC_HW8_512: - this->eccsteps = mtd->oobblock / 512; - break; - case NAND_ECC_HW3_256: - case NAND_ECC_SOFT: - this->eccsteps = mtd->oobblock / 256; - break; + /* + * The number of bytes available for a client to place data into + * the out of band area + */ + chip->ecc.layout->oobavail = 0; + for (i = 0; chip->ecc.layout->oobfree[i].length; i++) + chip->ecc.layout->oobavail += + chip->ecc.layout->oobfree[i].length; - case NAND_ECC_NONE: - this->eccsteps = 1; - break; + /* + * Set the number of read / write steps for one page depending on ECC + * mode + */ + chip->ecc.steps = mtd->writesize / chip->ecc.size; + if(chip->ecc.steps * chip->ecc.size != mtd->writesize) { + printk(KERN_WARNING "Invalid ecc parameters\n"); + BUG(); } + chip->ecc.total = chip->ecc.steps * chip->ecc.bytes; - /* Initialize state, waitqueue and spinlock */ - this->state = FL_READY; - init_waitqueue_head (&this->wq); - spin_lock_init (&this->chip_lock); + /* Initialize state */ + chip->state = FL_READY; /* De-select the device */ - this->select_chip(mtd, -1); + chip->select_chip(mtd, -1); /* Invalidate the pagebuffer reference */ - this->pagebuf = -1; + chip->pagebuf = -1; /* Fill in remaining MTD driver data */ mtd->type = MTD_NANDFLASH; - mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC; + mtd->flags = MTD_CAP_NANDFLASH; mtd->ecctype = MTD_ECC_SW; mtd->erase = nand_erase; mtd->point = NULL; mtd->unpoint = NULL; mtd->read = nand_read; mtd->write = nand_write; - mtd->read_ecc = nand_read_ecc; - mtd->write_ecc = nand_write_ecc; mtd->read_oob = nand_read_oob; mtd->write_oob = nand_write_oob; - mtd->readv = NULL; - mtd->writev = nand_writev; - mtd->writev_ecc = nand_writev_ecc; mtd->sync = nand_sync; mtd->lock = NULL; mtd->unlock = NULL; @@ -2692,47 +2490,38 @@ int nand_scan (struct mtd_info *mtd, int maxchips) mtd->block_isbad = nand_block_isbad; mtd->block_markbad = nand_block_markbad; - /* and make the autooob the default one */ - memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo)); - - mtd->owner = THIS_MODULE; + /* propagate ecc.layout to mtd_info */ + mtd->ecclayout = chip->ecc.layout; /* Check, if we should skip the bad block table scan */ - if (this->options & NAND_SKIP_BBTSCAN) + if (chip->options & NAND_SKIP_BBTSCAN) return 0; /* Build bad block table */ - return this->scan_bbt (mtd); + return chip->scan_bbt(mtd); } /** * nand_release - [NAND Interface] Free resources held by the NAND device * @mtd: MTD device structure */ -void nand_release (struct mtd_info *mtd) +void nand_release(struct mtd_info *mtd) { - struct nand_chip *this = mtd->priv; + struct nand_chip *chip = mtd->priv; #ifdef CONFIG_MTD_PARTITIONS /* Deregister partitions */ - del_mtd_partitions (mtd); + del_mtd_partitions(mtd); #endif /* Deregister the device */ - del_mtd_device (mtd); + del_mtd_device(mtd); /* Free bad block table memory */ - kfree (this->bbt); - /* Buffer allocated by nand_scan ? */ - if (this->options & NAND_OOBBUF_ALLOC) - kfree (this->oob_buf); - /* Buffer allocated by nand_scan ? */ - if (this->options & NAND_DATABUF_ALLOC) - kfree (this->data_buf); + kfree(chip->bbt); } -EXPORT_SYMBOL_GPL (nand_scan); -EXPORT_SYMBOL_GPL (nand_release); - +EXPORT_SYMBOL_GPL(nand_scan); +EXPORT_SYMBOL_GPL(nand_release); static int __init nand_base_init(void) { @@ -2748,6 +2537,6 @@ static void __exit nand_base_exit(void) module_init(nand_base_init); module_exit(nand_base_exit); -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR ("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>"); -MODULE_DESCRIPTION ("Generic NAND flash driver code"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>"); +MODULE_DESCRIPTION("Generic NAND flash driver code"); diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index ca286999fe08..a612c4ea8194 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -48,7 +48,7 @@ * * Following assumptions are made: * - bbts start at a page boundary, if autolocated on a block boundary - * - the space neccecary for a bbt in FLASH does not exceed a block boundary + * - the space necessary for a bbt in FLASH does not exceed a block boundary * */ @@ -60,7 +60,7 @@ #include <linux/mtd/compatmac.h> #include <linux/bitops.h> #include <linux/delay.h> - +#include <linux/vmalloc.h> /** * check_pattern - [GENERIC] check if a pattern is in the buffer @@ -75,7 +75,7 @@ * pattern area contain 0xff * */ -static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) +static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) { int i, end = 0; uint8_t *p = buf; @@ -116,7 +116,7 @@ static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_des * no optional empty check * */ -static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td) +static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) { int i; uint8_t *p = buf; @@ -142,8 +142,8 @@ static int check_short_pattern (uint8_t *buf, struct nand_bbt_descr *td) * Read the bad block table starting from page. * */ -static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, - int bits, int offs, int reserved_block_code) +static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, + int bits, int offs, int reserved_block_code) { int res, i, j, act = 0; struct nand_chip *this = mtd->priv; @@ -152,17 +152,17 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, uint8_t msk = (uint8_t) ((1 << bits) - 1); totlen = (num * bits) >> 3; - from = ((loff_t)page) << this->page_shift; + from = ((loff_t) page) << this->page_shift; while (totlen) { - len = min (totlen, (size_t) (1 << this->bbt_erase_shift)); - res = mtd->read_ecc (mtd, from, len, &retlen, buf, NULL, this->autooob); + len = min(totlen, (size_t) (1 << this->bbt_erase_shift)); + res = mtd->read(mtd, from, len, &retlen, buf); if (res < 0) { if (retlen != len) { - printk (KERN_INFO "nand_bbt: Error reading bad block table\n"); + printk(KERN_INFO "nand_bbt: Error reading bad block table\n"); return res; } - printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); + printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); } /* Analyse data */ @@ -172,22 +172,23 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, uint8_t tmp = (dat >> j) & msk; if (tmp == msk) continue; - if (reserved_block_code && - (tmp == reserved_block_code)) { - printk (KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n", - ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + if (reserved_block_code && (tmp == reserved_block_code)) { + printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n", + ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); + mtd->ecc_stats.bbtblocks++; continue; } /* Leave it for now, if its matured we can move this * message to MTD_DEBUG_LEVEL0 */ - printk (KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", - ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", + ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); /* Factory marked bad or worn out ? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); else this->bbt[offs + (act >> 3)] |= 0x1 << (act & 0x06); + mtd->ecc_stats.badblocks++; } } totlen -= len; @@ -207,7 +208,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, * Read the bad block table for all chips starting at a given page * We assume that the bbt bits are in consecutive order. */ -static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) +static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) { struct nand_chip *this = mtd->priv; int res = 0, i; @@ -231,6 +232,42 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des return 0; } +/* + * Scan read raw data from flash + */ +static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, + size_t len) +{ + struct mtd_oob_ops ops; + + ops.mode = MTD_OOB_RAW; + ops.ooboffs = 0; + ops.ooblen = mtd->oobsize; + ops.oobbuf = buf; + ops.datbuf = buf; + ops.len = len; + + return mtd->read_oob(mtd, offs, &ops); +} + +/* + * Scan write data with oob to flash + */ +static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len, + uint8_t *buf, uint8_t *oob) +{ + struct mtd_oob_ops ops; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = 0; + ops.ooblen = mtd->oobsize; + ops.datbuf = buf; + ops.oobbuf = oob; + ops.len = len; + + return mtd->write_oob(mtd, offs, &ops); +} + /** * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page * @mtd: MTD device structure @@ -242,28 +279,85 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des * We assume that the bbt bits are in consecutive order. * */ -static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, - struct nand_bbt_descr *md) +static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, struct nand_bbt_descr *md) { struct nand_chip *this = mtd->priv; /* Read the primary version, if available */ if (td->options & NAND_BBT_VERSION) { - nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); - td->version[0] = buf[mtd->oobblock + td->veroffs]; - printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); + scan_read_raw(mtd, buf, td->pages[0] << this->page_shift, + mtd->writesize); + td->version[0] = buf[mtd->writesize + td->veroffs]; + printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", + td->pages[0], td->version[0]); } /* Read the mirror version, if available */ if (md && (md->options & NAND_BBT_VERSION)) { - nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); - md->version[0] = buf[mtd->oobblock + md->veroffs]; - printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); + scan_read_raw(mtd, buf, md->pages[0] << this->page_shift, + mtd->writesize); + md->version[0] = buf[mtd->writesize + md->veroffs]; + printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", + md->pages[0], md->version[0]); } - return 1; } +/* + * Scan a given block full + */ +static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, + loff_t offs, uint8_t *buf, size_t readlen, + int scanlen, int len) +{ + int ret, j; + + ret = scan_read_raw(mtd, buf, offs, readlen); + if (ret) + return ret; + + for (j = 0; j < len; j++, buf += scanlen) { + if (check_pattern(buf, scanlen, mtd->writesize, bd)) + return 1; + } + return 0; +} + +/* + * Scan a given block partially + */ +static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, + loff_t offs, uint8_t *buf, int len) +{ + struct mtd_oob_ops ops; + int j, ret; + + ops.len = mtd->oobsize; + ops.ooblen = mtd->oobsize; + ops.oobbuf = buf; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.mode = MTD_OOB_PLACE; + + for (j = 0; j < len; j++) { + /* + * Read the full oob until read_oob is fixed to + * handle single byte reads for 16 bit + * buswidth + */ + ret = mtd->read_oob(mtd, offs, &ops); + if (ret) + return ret; + + if (check_short_pattern(buf, bd)) + return 1; + + offs += mtd->writesize; + } + return 0; +} + /** * create_bbt - [GENERIC] Create a bad block table by scanning the device * @mtd: MTD device structure @@ -275,15 +369,16 @@ static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_de * Create a bad block table by scanning the device * for the given good/bad block identify pattern */ -static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) +static int create_bbt(struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *bd, int chip) { struct nand_chip *this = mtd->priv; - int i, j, numblocks, len, scanlen; + int i, numblocks, len, scanlen; int startblock; loff_t from; - size_t readlen, ooblen; + size_t readlen; - printk (KERN_INFO "Scanning device for bad blocks\n"); + printk(KERN_INFO "Scanning device for bad blocks\n"); if (bd->options & NAND_BBT_SCANALLPAGES) len = 1 << (this->bbt_erase_shift - this->page_shift); @@ -296,25 +391,24 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr if (!(bd->options & NAND_BBT_SCANEMPTY)) { /* We need only read few bytes from the OOB area */ - scanlen = ooblen = 0; + scanlen = 0; readlen = bd->len; } else { /* Full page content should be read */ - scanlen = mtd->oobblock + mtd->oobsize; - readlen = len * mtd->oobblock; - ooblen = len * mtd->oobsize; + scanlen = mtd->writesize + mtd->oobsize; + readlen = len * mtd->writesize; } if (chip == -1) { - /* Note that numblocks is 2 * (real numblocks) here, see i+=2 below as it - * makes shifting and masking less painful */ + /* Note that numblocks is 2 * (real numblocks) here, see i+=2 + * below as it makes shifting and masking less painful */ numblocks = mtd->size >> (this->bbt_erase_shift - 1); startblock = 0; from = 0; } else { if (chip >= this->numchips) { - printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", - chip + 1, this->numchips); + printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", + chip + 1, this->numchips); return -EINVAL; } numblocks = this->chipsize >> (this->bbt_erase_shift - 1); @@ -326,36 +420,22 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr for (i = startblock; i < numblocks;) { int ret; - if (bd->options & NAND_BBT_SCANEMPTY) - if ((ret = nand_read_raw (mtd, buf, from, readlen, ooblen))) - return ret; - - for (j = 0; j < len; j++) { - if (!(bd->options & NAND_BBT_SCANEMPTY)) { - size_t retlen; - - /* Read the full oob until read_oob is fixed to - * handle single byte reads for 16 bit buswidth */ - ret = mtd->read_oob(mtd, from + j * mtd->oobblock, - mtd->oobsize, &retlen, buf); - if (ret) - return ret; - - if (check_short_pattern (buf, bd)) { - this->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", - i >> 1, (unsigned int) from); - break; - } - } else { - if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { - this->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", - i >> 1, (unsigned int) from); - break; - } - } + if (bd->options & NAND_BBT_SCANALLPAGES) + ret = scan_block_full(mtd, bd, from, buf, readlen, + scanlen, len); + else + ret = scan_block_fast(mtd, bd, from, buf, len); + + if (ret < 0) + return ret; + + if (ret) { + this->bbt[i >> 3] |= 0x03 << (i & 0x6); + printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n", + i >> 1, (unsigned int)from); + mtd->ecc_stats.badblocks++; } + i += 2; from += (1 << this->bbt_erase_shift); } @@ -374,22 +454,23 @@ static int create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr * block. * If the option NAND_BBT_PERCHIP is given, each chip is searched * for a bbt, which contains the bad block information of this chip. - * This is neccecary to provide support for certain DOC devices. + * This is necessary to provide support for certain DOC devices. * * The bbt ident pattern resides in the oob area of the first page * in a block. */ -static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) +static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) { struct nand_chip *this = mtd->priv; int i, chips; int bits, startblock, block, dir; - int scanlen = mtd->oobblock + mtd->oobsize; + int scanlen = mtd->writesize + mtd->oobsize; int bbtblocks; + int blocktopage = this->bbt_erase_shift - this->page_shift; /* Search direction top -> down ? */ if (td->options & NAND_BBT_LASTBLOCK) { - startblock = (mtd->size >> this->bbt_erase_shift) -1; + startblock = (mtd->size >> this->bbt_erase_shift) - 1; dir = -1; } else { startblock = 0; @@ -415,13 +496,16 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr td->pages[i] = -1; /* Scan the maximum number of blocks */ for (block = 0; block < td->maxblocks; block++) { + int actblock = startblock + dir * block; + loff_t offs = actblock << this->bbt_erase_shift; + /* Read first page */ - nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); - if (!check_pattern(buf, scanlen, mtd->oobblock, td)) { - td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift); + scan_read_raw(mtd, buf, offs, mtd->writesize); + if (!check_pattern(buf, scanlen, mtd->writesize, td)) { + td->pages[i] = actblock << blocktopage; if (td->options & NAND_BBT_VERSION) { - td->version[i] = buf[mtd->oobblock + td->veroffs]; + td->version[i] = buf[mtd->writesize + td->veroffs]; } break; } @@ -431,9 +515,10 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /* Check, if we found a bbt for each requested chip */ for (i = 0; i < chips; i++) { if (td->pages[i] == -1) - printk (KERN_WARNING "Bad block table not found for chip %d\n", i); + printk(KERN_WARNING "Bad block table not found for chip %d\n", i); else - printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); + printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], + td->version[i]); } return 0; } @@ -447,21 +532,19 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr * * Search and read the bad block table(s) */ -static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, - struct nand_bbt_descr *td, struct nand_bbt_descr *md) +static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) { /* Search the primary table */ - search_bbt (mtd, buf, td); + search_bbt(mtd, buf, td); /* Search the mirror table */ if (md) - search_bbt (mtd, buf, md); + search_bbt(mtd, buf, md); /* Force result check */ return 1; } - /** * write_bbt - [GENERIC] (Re)write the bad block table * @@ -474,25 +557,31 @@ static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, * (Re)write the bad block table * */ -static int write_bbt (struct mtd_info *mtd, uint8_t *buf, - struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) +static int write_bbt(struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, struct nand_bbt_descr *md, + int chipsel) { struct nand_chip *this = mtd->priv; - struct nand_oobinfo oobinfo; struct erase_info einfo; int i, j, res, chip = 0; int bits, startblock, dir, page, offs, numblocks, sft, sftmsk; - int nrchips, bbtoffs, pageoffs; + int nrchips, bbtoffs, pageoffs, ooboffs; uint8_t msk[4]; uint8_t rcode = td->reserved_block_code; size_t retlen, len = 0; loff_t to; + struct mtd_oob_ops ops; + + ops.ooblen = mtd->oobsize; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.mode = MTD_OOB_PLACE; if (!rcode) rcode = 0xff; /* Write bad block table per chip rather than per device ? */ if (td->options & NAND_BBT_PERCHIP) { - numblocks = (int) (this->chipsize >> this->bbt_erase_shift); + numblocks = (int)(this->chipsize >> this->bbt_erase_shift); /* Full device write or specific chip ? */ if (chipsel == -1) { nrchips = this->numchips; @@ -501,7 +590,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, chip = chipsel; } } else { - numblocks = (int) (mtd->size >> this->bbt_erase_shift); + numblocks = (int)(mtd->size >> this->bbt_erase_shift); nrchips = 1; } @@ -530,27 +619,38 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, for (i = 0; i < td->maxblocks; i++) { int block = startblock + dir * i; /* Check, if the block is bad */ - switch ((this->bbt[block >> 2] >> (2 * (block & 0x03))) & 0x03) { + switch ((this->bbt[block >> 2] >> + (2 * (block & 0x03))) & 0x03) { case 0x01: case 0x03: continue; } - page = block << (this->bbt_erase_shift - this->page_shift); + page = block << + (this->bbt_erase_shift - this->page_shift); /* Check, if the block is used by the mirror table */ if (!md || md->pages[chip] != page) goto write; } - printk (KERN_ERR "No space left to write bad block table\n"); + printk(KERN_ERR "No space left to write bad block table\n"); return -ENOSPC; -write: + write: /* Set up shift count and masks for the flash table */ bits = td->options & NAND_BBT_NRBITS_MSK; + msk[2] = ~rcode; switch (bits) { - case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x01; break; - case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x03; break; - case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C; msk[2] = ~rcode; msk[3] = 0x0f; break; - case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; msk[2] = ~rcode; msk[3] = 0xff; break; + case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01; + msk[3] = 0x01; + break; + case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01; + msk[3] = 0x03; + break; + case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C; + msk[3] = 0x0f; + break; + case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; + msk[3] = 0xff; + break; default: return -EINVAL; } @@ -558,82 +658,92 @@ write: to = ((loff_t) page) << this->page_shift; - memcpy (&oobinfo, this->autooob, sizeof(oobinfo)); - oobinfo.useecc = MTD_NANDECC_PLACEONLY; - /* Must we save the block contents ? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); len = 1 << this->bbt_erase_shift; - res = mtd->read_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); + res = mtd->read(mtd, to, len, &retlen, buf); if (res < 0) { if (retlen != len) { - printk (KERN_INFO "nand_bbt: Error reading block for writing the bad block table\n"); + printk(KERN_INFO "nand_bbt: Error " + "reading block for writing " + "the bad block table\n"); return res; } - printk (KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n"); + printk(KERN_WARNING "nand_bbt: ECC error " + "while reading block for writing " + "bad block table\n"); } + /* Read oob data */ + ops.len = (len >> this->page_shift) * mtd->oobsize; + ops.oobbuf = &buf[len]; + res = mtd->read_oob(mtd, to + mtd->writesize, &ops); + if (res < 0 || ops.retlen != ops.len) + goto outerr; + /* Calc the byte offset in the buffer */ pageoffs = page - (int)(to >> this->page_shift); offs = pageoffs << this->page_shift; /* Preset the bbt area with 0xff */ - memset (&buf[offs], 0xff, (size_t)(numblocks >> sft)); - /* Preset the bbt's oob area with 0xff */ - memset (&buf[len + pageoffs * mtd->oobsize], 0xff, - ((len >> this->page_shift) - pageoffs) * mtd->oobsize); - if (td->options & NAND_BBT_VERSION) { - buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip]; - } + memset(&buf[offs], 0xff, (size_t) (numblocks >> sft)); + ooboffs = len + (pageoffs * mtd->oobsize); + } else { /* Calc length */ len = (size_t) (numblocks >> sft); /* Make it page aligned ! */ - len = (len + (mtd->oobblock-1)) & ~(mtd->oobblock-1); + len = (len + (mtd->writesize - 1)) & + ~(mtd->writesize - 1); /* Preset the buffer with 0xff */ - memset (buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize); + memset(buf, 0xff, len + + (len >> this->page_shift)* mtd->oobsize); offs = 0; + ooboffs = len; /* Pattern is located in oob area of first page */ - memcpy (&buf[len + td->offs], td->pattern, td->len); - if (td->options & NAND_BBT_VERSION) { - buf[len + td->veroffs] = td->version[chip]; - } + memcpy(&buf[ooboffs + td->offs], td->pattern, td->len); } + if (td->options & NAND_BBT_VERSION) + buf[ooboffs + td->veroffs] = td->version[chip]; + /* walk through the memory table */ - for (i = 0; i < numblocks; ) { + for (i = 0; i < numblocks;) { uint8_t dat; dat = this->bbt[bbtoffs + (i >> 2)]; - for (j = 0; j < 4; j++ , i++) { + for (j = 0; j < 4; j++, i++) { int sftcnt = (i << (3 - sft)) & sftmsk; /* Do not store the reserved bbt blocks ! */ - buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); + buf[offs + (i >> sft)] &= + ~(msk[dat & 0x03] << sftcnt); dat >>= 2; } } - memset (&einfo, 0, sizeof (einfo)); + memset(&einfo, 0, sizeof(einfo)); einfo.mtd = mtd; - einfo.addr = (unsigned long) to; + einfo.addr = (unsigned long)to; einfo.len = 1 << this->bbt_erase_shift; - res = nand_erase_nand (mtd, &einfo, 1); - if (res < 0) { - printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res); - return res; - } + res = nand_erase_nand(mtd, &einfo, 1); + if (res < 0) + goto outerr; - res = mtd->write_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); - if (res < 0) { - printk (KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res); - return res; - } - printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", - (unsigned int) to, td->version[chip]); + res = scan_write_bbt(mtd, to, len, buf, &buf[len]); + if (res < 0) + goto outerr; + + printk(KERN_DEBUG "Bad block table written to 0x%08x, version " + "0x%02X\n", (unsigned int)to, td->version[chip]); /* Mark it as used */ td->pages[chip] = page; } return 0; + + outerr: + printk(KERN_WARNING + "nand_bbt: Error while writing bad block table %d\n", res); + return res; } /** @@ -644,27 +754,27 @@ write: * The function creates a memory based bbt by scanning the device * for manufacturer / software marked good / bad blocks */ -static inline int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) +static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; bd->options &= ~NAND_BBT_SCANEMPTY; - return create_bbt (mtd, this->data_buf, bd, -1); + return create_bbt(mtd, this->buffers.databuf, bd, -1); } /** - * check_create - [GENERIC] create and write bbt(s) if neccecary + * check_create - [GENERIC] create and write bbt(s) if necessary * @mtd: MTD device structure * @buf: temporary buffer * @bd: descriptor for the good/bad block search pattern * * The function checks the results of the previous call to read_bbt - * and creates / updates the bbt(s) if neccecary - * Creation is neccecary if no bbt was found for the chip/device - * Update is neccecary if one of the tables is missing or the + * and creates / updates the bbt(s) if necessary + * Creation is necessary if no bbt was found for the chip/device + * Update is necessary if one of the tables is missing or the * version nr. of one table is less than the other */ -static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) +static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) { int i, chips, writeops, chipsel, res; struct nand_chip *this = mtd->priv; @@ -732,35 +842,35 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des rd = td; goto writecheck; } -create: + create: /* Create the bad block table by scanning the device ? */ if (!(td->options & NAND_BBT_CREATE)) continue; /* Create the table in memory by scanning the chip(s) */ - create_bbt (mtd, buf, bd, chipsel); + create_bbt(mtd, buf, bd, chipsel); td->version[i] = 1; if (md) md->version[i] = 1; -writecheck: + writecheck: /* read back first ? */ if (rd) - read_abs_bbt (mtd, buf, rd, chipsel); + read_abs_bbt(mtd, buf, rd, chipsel); /* If they weren't versioned, read both. */ if (rd2) - read_abs_bbt (mtd, buf, rd2, chipsel); + read_abs_bbt(mtd, buf, rd2, chipsel); /* Write the bad block table to the device ? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { - res = write_bbt (mtd, buf, td, md, chipsel); + res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) return res; } /* Write the mirror bad block table to the device ? */ if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { - res = write_bbt (mtd, buf, md, td, chipsel); + res = write_bbt(mtd, buf, md, td, chipsel); if (res < 0) return res; } @@ -777,7 +887,7 @@ writecheck: * accidental erasures / writes. The regions are identified by * the mark 0x02. */ -static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) +static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) { struct nand_chip *this = mtd->priv; int i, j, chips, block, nrblocks, update; @@ -795,7 +905,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) for (i = 0; i < chips; i++) { if ((td->options & NAND_BBT_ABSPAGE) || !(td->options & NAND_BBT_WRITE)) { - if (td->pages[i] == -1) continue; + if (td->pages[i] == -1) + continue; block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift); block <<= 1; oldval = this->bbt[(block >> 3)]; @@ -815,7 +926,8 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) oldval = this->bbt[(block >> 3)]; newval = oldval | (0x2 << (block & 0x06)); this->bbt[(block >> 3)] = newval; - if (oldval != newval) update = 1; + if (oldval != newval) + update = 1; block += 2; } /* If we want reserved blocks to be recorded to flash, and some @@ -840,7 +952,7 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) * by calling the nand_free_bbt function. * */ -int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) +int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; int len, res = 0; @@ -850,21 +962,21 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) len = mtd->size >> (this->bbt_erase_shift + 2); /* Allocate memory (2bit per block) */ - this->bbt = kmalloc (len, GFP_KERNEL); + this->bbt = kmalloc(len, GFP_KERNEL); if (!this->bbt) { - printk (KERN_ERR "nand_scan_bbt: Out of memory\n"); + printk(KERN_ERR "nand_scan_bbt: Out of memory\n"); return -ENOMEM; } /* Clear the memory bad block table */ - memset (this->bbt, 0x00, len); + memset(this->bbt, 0x00, len); /* If no primary table decriptor is given, scan the device * to build a memory based bad block table */ if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { - printk (KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); - kfree (this->bbt); + printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); + kfree(this->bbt); this->bbt = NULL; } return res; @@ -873,35 +985,34 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) /* Allocate a temporary buffer for one eraseblock incl. oob */ len = (1 << this->bbt_erase_shift); len += (len >> this->page_shift) * mtd->oobsize; - buf = kmalloc (len, GFP_KERNEL); + buf = vmalloc(len); if (!buf) { - printk (KERN_ERR "nand_bbt: Out of memory\n"); - kfree (this->bbt); + printk(KERN_ERR "nand_bbt: Out of memory\n"); + kfree(this->bbt); this->bbt = NULL; return -ENOMEM; } /* Is the bbt at a given page ? */ if (td->options & NAND_BBT_ABSPAGE) { - res = read_abs_bbts (mtd, buf, td, md); + res = read_abs_bbts(mtd, buf, td, md); } else { /* Search the bad block table using a pattern in oob */ - res = search_read_bbts (mtd, buf, td, md); + res = search_read_bbts(mtd, buf, td, md); } if (res) - res = check_create (mtd, buf, bd); + res = check_create(mtd, buf, bd); /* Prevent the bbt regions from erasing / writing */ - mark_bbt_region (mtd, td); + mark_bbt_region(mtd, td); if (md) - mark_bbt_region (mtd, md); + mark_bbt_region(mtd, md); - kfree (buf); + vfree(buf); return res; } - /** * nand_update_bbt - [NAND Interface] update bad block table(s) * @mtd: MTD device structure @@ -909,7 +1020,7 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) * * The function updates the bad block table(s) */ -int nand_update_bbt (struct mtd_info *mtd, loff_t offs) +int nand_update_bbt(struct mtd_info *mtd, loff_t offs) { struct nand_chip *this = mtd->priv; int len, res = 0, writeops = 0; @@ -925,9 +1036,9 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) /* Allocate a temporary buffer for one eraseblock incl. oob */ len = (1 << this->bbt_erase_shift); len += (len >> this->page_shift) * mtd->oobsize; - buf = kmalloc (len, GFP_KERNEL); + buf = kmalloc(len, GFP_KERNEL); if (!buf) { - printk (KERN_ERR "nand_update_bbt: Out of memory\n"); + printk(KERN_ERR "nand_update_bbt: Out of memory\n"); return -ENOMEM; } @@ -935,7 +1046,7 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) /* Do we have a bbt per chip ? */ if (td->options & NAND_BBT_PERCHIP) { - chip = (int) (offs >> this->chip_shift); + chip = (int)(offs >> this->chip_shift); chipsel = chip; } else { chip = 0; @@ -948,17 +1059,17 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) /* Write the bad block table to the device ? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { - res = write_bbt (mtd, buf, td, md, chipsel); + res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) goto out; } /* Write the mirror bad block table to the device ? */ if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { - res = write_bbt (mtd, buf, md, td, chipsel); + res = write_bbt(mtd, buf, md, td, chipsel); } -out: - kfree (buf); + out: + kfree(buf); return res; } @@ -981,14 +1092,14 @@ static struct nand_bbt_descr largepage_memorybased = { }; static struct nand_bbt_descr smallpage_flashbased = { - .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES, + .options = NAND_BBT_SCAN2NDPAGE, .offs = 5, .len = 1, .pattern = scan_ff_pattern }; static struct nand_bbt_descr largepage_flashbased = { - .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES, + .options = NAND_BBT_SCAN2NDPAGE, .offs = 0, .len = 2, .pattern = scan_ff_pattern @@ -1036,7 +1147,7 @@ static struct nand_bbt_descr bbt_mirror_descr = { * support for the device and calls the nand_scan_bbt function * */ -int nand_default_bbt (struct mtd_info *mtd) +int nand_default_bbt(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; @@ -1046,7 +1157,7 @@ int nand_default_bbt (struct mtd_info *mtd) * of the good / bad information, so we _must_ store * this information in a good / bad table during * startup - */ + */ if (this->options & NAND_IS_AND) { /* Use the default pattern descriptors */ if (!this->bbt_td) { @@ -1054,10 +1165,9 @@ int nand_default_bbt (struct mtd_info *mtd) this->bbt_md = &bbt_mirror_descr; } this->options |= NAND_USE_FLASH_BBT; - return nand_scan_bbt (mtd, &agand_flashbased); + return nand_scan_bbt(mtd, &agand_flashbased); } - /* Is a flash based bad block table requested ? */ if (this->options & NAND_USE_FLASH_BBT) { /* Use the default pattern descriptors */ @@ -1066,18 +1176,17 @@ int nand_default_bbt (struct mtd_info *mtd) this->bbt_md = &bbt_mirror_descr; } if (!this->badblock_pattern) { - this->badblock_pattern = (mtd->oobblock > 512) ? - &largepage_flashbased : &smallpage_flashbased; + this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased; } } else { this->bbt_td = NULL; this->bbt_md = NULL; if (!this->badblock_pattern) { - this->badblock_pattern = (mtd->oobblock > 512) ? - &largepage_memorybased : &smallpage_memorybased; + this->badblock_pattern = (mtd->writesize > 512) ? + &largepage_memorybased : &smallpage_memorybased; } } - return nand_scan_bbt (mtd, this->badblock_pattern); + return nand_scan_bbt(mtd, this->badblock_pattern); } /** @@ -1087,26 +1196,29 @@ int nand_default_bbt (struct mtd_info *mtd) * @allowbbt: allow access to bad block table region * */ -int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt) +int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) { struct nand_chip *this = mtd->priv; int block; - uint8_t res; + uint8_t res; /* Get block number * 2 */ - block = (int) (offs >> (this->bbt_erase_shift - 1)); + block = (int)(offs >> (this->bbt_erase_shift - 1)); res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; - DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", - (unsigned int)offs, block >> 1, res); + DEBUG(MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", + (unsigned int)offs, block >> 1, res); switch ((int)res) { - case 0x00: return 0; - case 0x01: return 1; - case 0x02: return allowbbt ? 0 : 1; + case 0x00: + return 0; + case 0x01: + return 1; + case 0x02: + return allowbbt ? 0 : 1; } return 1; } -EXPORT_SYMBOL (nand_scan_bbt); -EXPORT_SYMBOL (nand_default_bbt); +EXPORT_SYMBOL(nand_scan_bbt); +EXPORT_SYMBOL(nand_default_bbt); diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c index 40ac909150a3..2a163e4084df 100644 --- a/drivers/mtd/nand/nand_ecc.c +++ b/drivers/mtd/nand/nand_ecc.c @@ -7,6 +7,8 @@ * Copyright (C) 2000-2004 Steven J. Hill (sjhill@realitydiluted.com) * Toshiba America Electronics Components, Inc. * + * Copyright (C) 2006 Thomas Gleixner <tglx@linutronix.de> + * * $Id: nand_ecc.c,v 1.15 2005/11/07 11:14:30 gleixner Exp $ * * This file is free software; you can redistribute it and/or modify it @@ -62,90 +64,76 @@ static const u_char nand_ecc_precalc_table[] = { 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00 }; - /** - * nand_trans_result - [GENERIC] create non-inverted ECC - * @reg2: line parity reg 2 - * @reg3: line parity reg 3 - * @ecc_code: ecc - * - * Creates non-inverted ECC code from line parity - */ -static void nand_trans_result(u_char reg2, u_char reg3, - u_char *ecc_code) -{ - u_char a, b, i, tmp1, tmp2; - - /* Initialize variables */ - a = b = 0x80; - tmp1 = tmp2 = 0; - - /* Calculate first ECC byte */ - for (i = 0; i < 4; i++) { - if (reg3 & a) /* LP15,13,11,9 --> ecc_code[0] */ - tmp1 |= b; - b >>= 1; - if (reg2 & a) /* LP14,12,10,8 --> ecc_code[0] */ - tmp1 |= b; - b >>= 1; - a >>= 1; - } - - /* Calculate second ECC byte */ - b = 0x80; - for (i = 0; i < 4; i++) { - if (reg3 & a) /* LP7,5,3,1 --> ecc_code[1] */ - tmp2 |= b; - b >>= 1; - if (reg2 & a) /* LP6,4,2,0 --> ecc_code[1] */ - tmp2 |= b; - b >>= 1; - a >>= 1; - } - - /* Store two of the ECC bytes */ - ecc_code[0] = tmp1; - ecc_code[1] = tmp2; -} - -/** - * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code for 256 byte block + * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code + * for 256 byte block * @mtd: MTD block structure * @dat: raw data * @ecc_code: buffer for ECC */ -int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) +int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, + u_char *ecc_code) { - u_char idx, reg1, reg2, reg3; - int j; + uint8_t idx, reg1, reg2, reg3, tmp1, tmp2; + int i; /* Initialize variables */ reg1 = reg2 = reg3 = 0; - ecc_code[0] = ecc_code[1] = ecc_code[2] = 0; /* Build up column parity */ - for(j = 0; j < 256; j++) { - + for(i = 0; i < 256; i++) { /* Get CP0 - CP5 from table */ - idx = nand_ecc_precalc_table[dat[j]]; + idx = nand_ecc_precalc_table[*dat++]; reg1 ^= (idx & 0x3f); /* All bit XOR = 1 ? */ if (idx & 0x40) { - reg3 ^= (u_char) j; - reg2 ^= ~((u_char) j); + reg3 ^= (uint8_t) i; + reg2 ^= ~((uint8_t) i); } } /* Create non-inverted ECC code from line parity */ - nand_trans_result(reg2, reg3, ecc_code); + tmp1 = (reg3 & 0x80) >> 0; /* B7 -> B7 */ + tmp1 |= (reg2 & 0x80) >> 1; /* B7 -> B6 */ + tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */ + tmp1 |= (reg2 & 0x40) >> 2; /* B6 -> B4 */ + tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */ + tmp1 |= (reg2 & 0x20) >> 3; /* B5 -> B2 */ + tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */ + tmp1 |= (reg2 & 0x10) >> 4; /* B4 -> B0 */ + + tmp2 = (reg3 & 0x08) << 4; /* B3 -> B7 */ + tmp2 |= (reg2 & 0x08) << 3; /* B3 -> B6 */ + tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */ + tmp2 |= (reg2 & 0x04) << 2; /* B2 -> B4 */ + tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */ + tmp2 |= (reg2 & 0x02) << 1; /* B1 -> B2 */ + tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */ + tmp2 |= (reg2 & 0x01) << 0; /* B7 -> B0 */ /* Calculate final ECC code */ - ecc_code[0] = ~ecc_code[0]; - ecc_code[1] = ~ecc_code[1]; +#ifdef CONFIG_NAND_ECC_SMC + ecc_code[0] = ~tmp2; + ecc_code[1] = ~tmp1; +#else + ecc_code[0] = ~tmp1; + ecc_code[1] = ~tmp2; +#endif ecc_code[2] = ((~reg1) << 2) | 0x03; + return 0; } +EXPORT_SYMBOL(nand_calculate_ecc); + +static inline int countbits(uint32_t byte) +{ + int res = 0; + + for (;byte; byte >>= 1) + res += byte & 0x01; + return res; +} /** * nand_correct_data - [NAND Interface] Detect and correct bit error(s) @@ -156,93 +144,54 @@ int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code * * Detect and correct a 1 bit error for 256 byte block */ -int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) +int nand_correct_data(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *calc_ecc) { - u_char a, b, c, d1, d2, d3, add, bit, i; + uint8_t s0, s1, s2; + +#ifdef CONFIG_NAND_ECC_SMC + s0 = calc_ecc[0] ^ read_ecc[0]; + s1 = calc_ecc[1] ^ read_ecc[1]; + s2 = calc_ecc[2] ^ read_ecc[2]; +#else + s1 = calc_ecc[0] ^ read_ecc[0]; + s0 = calc_ecc[1] ^ read_ecc[1]; + s2 = calc_ecc[2] ^ read_ecc[2]; +#endif + if ((s0 | s1 | s2) == 0) + return 0; - /* Do error detection */ - d1 = calc_ecc[0] ^ read_ecc[0]; - d2 = calc_ecc[1] ^ read_ecc[1]; - d3 = calc_ecc[2] ^ read_ecc[2]; + /* Check for a single bit error */ + if( ((s0 ^ (s0 >> 1)) & 0x55) == 0x55 && + ((s1 ^ (s1 >> 1)) & 0x55) == 0x55 && + ((s2 ^ (s2 >> 1)) & 0x54) == 0x54) { - if ((d1 | d2 | d3) == 0) { - /* No errors */ - return 0; - } - else { - a = (d1 ^ (d1 >> 1)) & 0x55; - b = (d2 ^ (d2 >> 1)) & 0x55; - c = (d3 ^ (d3 >> 1)) & 0x54; - - /* Found and will correct single bit error in the data */ - if ((a == 0x55) && (b == 0x55) && (c == 0x54)) { - c = 0x80; - add = 0; - a = 0x80; - for (i=0; i<4; i++) { - if (d1 & c) - add |= a; - c >>= 2; - a >>= 1; - } - c = 0x80; - for (i=0; i<4; i++) { - if (d2 & c) - add |= a; - c >>= 2; - a >>= 1; - } - bit = 0; - b = 0x04; - c = 0x80; - for (i=0; i<3; i++) { - if (d3 & c) - bit |= b; - c >>= 2; - b >>= 1; - } - b = 0x01; - a = dat[add]; - a ^= (b << bit); - dat[add] = a; - return 1; - } - else { - i = 0; - while (d1) { - if (d1 & 0x01) - ++i; - d1 >>= 1; - } - while (d2) { - if (d2 & 0x01) - ++i; - d2 >>= 1; - } - while (d3) { - if (d3 & 0x01) - ++i; - d3 >>= 1; - } - if (i == 1) { - /* ECC Code Error Correction */ - read_ecc[0] = calc_ecc[0]; - read_ecc[1] = calc_ecc[1]; - read_ecc[2] = calc_ecc[2]; - return 2; - } - else { - /* Uncorrectable Error */ - return -1; - } - } + uint32_t byteoffs, bitnum; + + byteoffs = (s1 << 0) & 0x80; + byteoffs |= (s1 << 1) & 0x40; + byteoffs |= (s1 << 2) & 0x20; + byteoffs |= (s1 << 3) & 0x10; + + byteoffs |= (s0 >> 4) & 0x08; + byteoffs |= (s0 >> 3) & 0x04; + byteoffs |= (s0 >> 2) & 0x02; + byteoffs |= (s0 >> 1) & 0x01; + + bitnum = (s2 >> 5) & 0x04; + bitnum |= (s2 >> 4) & 0x02; + bitnum |= (s2 >> 3) & 0x01; + + dat[byteoffs] ^= (1 << bitnum); + + return 1; } - /* Should never happen */ + if(countbits(s0 | ((uint32_t)s1 << 8) | ((uint32_t)s2 <<16)) == 1) + return 1; + return -1; } - -EXPORT_SYMBOL(nand_calculate_ecc); EXPORT_SYMBOL(nand_correct_data); MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index dbc7e55a4247..2e2cdf2fc91d 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -18,99 +18,110 @@ * Name. ID code, pagesize, chipsize in MegaByte, eraseblock size, * options * -* Pagesize; 0, 256, 512 -* 0 get this information from the extended chip ID +* Pagesize; 0, 256, 512 +* 0 get this information from the extended chip ID + 256 256 Byte page size * 512 512 Byte page size */ struct nand_flash_dev nand_flash_ids[] = { - {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, - {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0}, - {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0}, - {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0}, - {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0}, - {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0}, - {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0}, - - {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0}, - {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, - {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, - {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, - - {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, - {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, - {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0}, - {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0}, - {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0}, - {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0}, - {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0}, - {"NAND 128MiB 1,8V 8-bit", 0x39, 512, 128, 0x4000, 0}, - {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0}, - {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0}, - - /* These are the new chips with large page size. The pagesize - * and the erasesize is determined from the extended id bytes - */ + {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, + {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0}, + {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0}, + {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0}, + {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0}, + {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0}, + {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0}, + + {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0}, + {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, + {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, + {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, + + {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, + {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, + {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0}, + {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0}, + {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0}, + {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0}, + {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0}, + {"NAND 128MiB 1,8V 8-bit", 0x39, 512, 128, 0x4000, 0}, + {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0}, + {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0}, + + /* + * These are the new chips with large page size. The pagesize and the + * erasesize is determined from the extended id bytes + */ +#define LP_OPTIONS (NAND_SAMSUNG_LP_OPTIONS | NAND_NO_READRDY | NAND_NO_AUTOINCR) +#define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16) + /*512 Megabit */ - {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, LP_OPTIONS}, + {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, LP_OPTIONS}, + {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, LP_OPTIONS16}, + {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, LP_OPTIONS16}, /* 1 Gigabit */ - {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, LP_OPTIONS}, + {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, LP_OPTIONS}, + {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, LP_OPTIONS16}, + {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, LP_OPTIONS16}, /* 2 Gigabit */ - {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, LP_OPTIONS}, + {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, LP_OPTIONS}, + {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, LP_OPTIONS16}, + {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, LP_OPTIONS16}, /* 4 Gigabit */ - {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, LP_OPTIONS}, + {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, LP_OPTIONS}, + {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, LP_OPTIONS16}, + {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, LP_OPTIONS16}, /* 8 Gigabit */ - {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, LP_OPTIONS}, + {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, LP_OPTIONS}, + {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, LP_OPTIONS16}, + {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, LP_OPTIONS16}, /* 16 Gigabit */ - {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, - {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - - /* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout ! - * The chosen minimum erasesize is 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page planes - * 1 block = 2 pages, but due to plane arrangement the blocks 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7 - * Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go - * There are more speed improvements for reads and writes possible, but not implemented now + {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, LP_OPTIONS}, + {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, LP_OPTIONS}, + {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, LP_OPTIONS16}, + {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, LP_OPTIONS16}, + + /* + * Renesas AND 1 Gigabit. Those chips do not support extended id and + * have a strange page/block layout ! The chosen minimum erasesize is + * 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page + * planes 1 block = 2 pages, but due to plane arrangement the blocks + * 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7 Anyway JFFS2 would + * increase the eraseblock size so we chose a combined one which can be + * erased in one go There are more speed improvements for reads and + * writes possible, but not implemented now */ - {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY | BBT_AUTO_REFRESH}, + {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, + NAND_IS_AND | NAND_NO_AUTOINCR |NAND_NO_READRDY | NAND_4PAGE_ARRAY | + BBT_AUTO_REFRESH + }, {NULL,} }; @@ -125,13 +136,13 @@ struct nand_manufacturers nand_manuf_ids[] = { {NAND_MFR_NATIONAL, "National"}, {NAND_MFR_RENESAS, "Renesas"}, {NAND_MFR_STMICRO, "ST Micro"}, - {NAND_MFR_HYNIX, "Hynix"}, + {NAND_MFR_HYNIX, "Hynix"}, {0x0, "Unknown"} }; -EXPORT_SYMBOL (nand_manuf_ids); -EXPORT_SYMBOL (nand_flash_ids); +EXPORT_SYMBOL(nand_manuf_ids); +EXPORT_SYMBOL(nand_flash_ids); -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR ("Thomas Gleixner <tglx@linutronix.de>"); -MODULE_DESCRIPTION ("Nand device & manufacturer ID's"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>"); +MODULE_DESCRIPTION("Nand device & manufacturer IDs"); diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index a0af92cc7efd..ebd64abc8be8 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -369,7 +369,7 @@ init_nandsim(struct mtd_info *mtd) /* Initialize the NAND flash parameters */ ns->busw = chip->options & NAND_BUSWIDTH_16 ? 16 : 8; ns->geom.totsz = mtd->size; - ns->geom.pgsz = mtd->oobblock; + ns->geom.pgsz = mtd->writesize; ns->geom.oobsz = mtd->oobsize; ns->geom.secsz = mtd->erasesize; ns->geom.pgszoob = ns->geom.pgsz + ns->geom.oobsz; @@ -1071,68 +1071,6 @@ switch_state(struct nandsim *ns) } } -static void -ns_hwcontrol(struct mtd_info *mtd, int cmd) -{ - struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv; - - switch (cmd) { - - /* set CLE line high */ - case NAND_CTL_SETCLE: - NS_DBG("ns_hwcontrol: start command latch cycles\n"); - ns->lines.cle = 1; - break; - - /* set CLE line low */ - case NAND_CTL_CLRCLE: - NS_DBG("ns_hwcontrol: stop command latch cycles\n"); - ns->lines.cle = 0; - break; - - /* set ALE line high */ - case NAND_CTL_SETALE: - NS_DBG("ns_hwcontrol: start address latch cycles\n"); - ns->lines.ale = 1; - break; - - /* set ALE line low */ - case NAND_CTL_CLRALE: - NS_DBG("ns_hwcontrol: stop address latch cycles\n"); - ns->lines.ale = 0; - break; - - /* set WP line high */ - case NAND_CTL_SETWP: - NS_DBG("ns_hwcontrol: enable write protection\n"); - ns->lines.wp = 1; - break; - - /* set WP line low */ - case NAND_CTL_CLRWP: - NS_DBG("ns_hwcontrol: disable write protection\n"); - ns->lines.wp = 0; - break; - - /* set CE line low */ - case NAND_CTL_SETNCE: - NS_DBG("ns_hwcontrol: enable chip\n"); - ns->lines.ce = 1; - break; - - /* set CE line high */ - case NAND_CTL_CLRNCE: - NS_DBG("ns_hwcontrol: disable chip\n"); - ns->lines.ce = 0; - break; - - default: - NS_ERR("hwcontrol: unknown command\n"); - } - - return; -} - static u_char ns_nand_read_byte(struct mtd_info *mtd) { @@ -1359,6 +1297,18 @@ ns_nand_write_byte(struct mtd_info *mtd, u_char byte) return; } +static void ns_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int bitmask) +{ + struct nandsim *ns = ((struct nand_chip *)mtd->priv)->priv; + + ns->lines.cle = bitmask & NAND_CLE ? 1 : 0; + ns->lines.ale = bitmask & NAND_ALE ? 1 : 0; + ns->lines.ce = bitmask & NAND_NCE ? 1 : 0; + + if (cmd != NAND_CMD_NONE) + ns_nand_write_byte(mtd, cmd); +} + static int ns_device_ready(struct mtd_info *mtd) { @@ -1377,17 +1327,6 @@ ns_nand_read_word(struct mtd_info *mtd) } static void -ns_nand_write_word(struct mtd_info *mtd, uint16_t word) -{ - struct nand_chip *chip = (struct nand_chip *)mtd->priv; - - NS_DBG("write_word\n"); - - chip->write_byte(mtd, word & 0xFF); - chip->write_byte(mtd, word >> 8); -} - -static void ns_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) { struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv; @@ -1514,16 +1453,14 @@ static int __init ns_init_module(void) /* * Register simulator's callbacks. */ - chip->hwcontrol = ns_hwcontrol; + chip->cmd_ctrl = ns_hwcontrol; chip->read_byte = ns_nand_read_byte; chip->dev_ready = ns_device_ready; - chip->write_byte = ns_nand_write_byte; chip->write_buf = ns_nand_write_buf; chip->read_buf = ns_nand_read_buf; chip->verify_buf = ns_nand_verify_buf; - chip->write_word = ns_nand_write_word; chip->read_word = ns_nand_read_word; - chip->eccmode = NAND_ECC_SOFT; + chip->ecc.mode = NAND_ECC_SOFT; chip->options |= NAND_SKIP_BBTSCAN; /* @@ -1546,6 +1483,8 @@ static int __init ns_init_module(void) chip->options |= NAND_BUSWIDTH_16; } + nsmtd->owner = THIS_MODULE; + if ((retval = nand_scan(nsmtd, 1)) != 0) { NS_ERR("can't register NAND Simulator\n"); if (retval > 0) diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c new file mode 100644 index 000000000000..fe8d38514ba6 --- /dev/null +++ b/drivers/mtd/nand/ndfc.c @@ -0,0 +1,311 @@ +/* + * drivers/mtd/ndfc.c + * + * Overview: + * Platform independend driver for NDFC (NanD Flash Controller) + * integrated into EP440 cores + * + * Author: Thomas Gleixner + * + * Copyright 2006 IBM + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#include <linux/module.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/ndfc.h> +#include <linux/mtd/mtd.h> +#include <linux/platform_device.h> + +#include <asm/io.h> +#include <asm/ibm44x.h> + +struct ndfc_nand_mtd { + struct mtd_info mtd; + struct nand_chip chip; + struct platform_nand_chip *pl_chip; +}; + +static struct ndfc_nand_mtd ndfc_mtd[NDFC_MAX_BANKS]; + +struct ndfc_controller { + void __iomem *ndfcbase; + struct nand_hw_control ndfc_control; + atomic_t childs_active; +}; + +static struct ndfc_controller ndfc_ctrl; + +static void ndfc_select_chip(struct mtd_info *mtd, int chip) +{ + uint32_t ccr; + struct ndfc_controller *ndfc = &ndfc_ctrl; + struct nand_chip *nandchip = mtd->priv; + struct ndfc_nand_mtd *nandmtd = nandchip->priv; + struct platform_nand_chip *pchip = nandmtd->pl_chip; + + ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR); + if (chip >= 0) { + ccr &= ~NDFC_CCR_BS_MASK; + ccr |= NDFC_CCR_BS(chip + pchip->chip_offset); + } else + ccr |= NDFC_CCR_RESET_CE; + writel(ccr, ndfc->ndfcbase + NDFC_CCR); +} + +static void ndfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *chip = mtd->priv; + + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_CMD); + else + writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_ALE); +} + +static int ndfc_ready(struct mtd_info *mtd) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + + return __raw_readl(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY; +} + +static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode) +{ + uint32_t ccr; + struct ndfc_controller *ndfc = &ndfc_ctrl; + + ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR); + ccr |= NDFC_CCR_RESET_ECC; + __raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR); + wmb(); +} + +static int ndfc_calculate_ecc(struct mtd_info *mtd, + const u_char *dat, u_char *ecc_code) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + uint32_t ecc; + uint8_t *p = (uint8_t *)&ecc; + + wmb(); + ecc = __raw_readl(ndfc->ndfcbase + NDFC_ECC); + ecc_code[0] = p[1]; + ecc_code[1] = p[2]; + ecc_code[2] = p[3]; + + return 0; +} + +/* + * Speedups for buffer read/write/verify + * + * NDFC allows 32bit read/write of data. So we can speed up the buffer + * functions. No further checking, as nand_base will always read/write + * page aligned. + */ +static void ndfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + uint32_t *p = (uint32_t *) buf; + + for(;len > 0; len -= 4) + *p++ = __raw_readl(ndfc->ndfcbase + NDFC_DATA); +} + +static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + uint32_t *p = (uint32_t *) buf; + + for(;len > 0; len -= 4) + __raw_writel(*p++, ndfc->ndfcbase + NDFC_DATA); +} + +static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + uint32_t *p = (uint32_t *) buf; + + for(;len > 0; len -= 4) + if (*p++ != __raw_readl(ndfc->ndfcbase + NDFC_DATA)) + return -EFAULT; + return 0; +} + +/* + * Initialize chip structure + */ +static void ndfc_chip_init(struct ndfc_nand_mtd *mtd) +{ + struct ndfc_controller *ndfc = &ndfc_ctrl; + struct nand_chip *chip = &mtd->chip; + + chip->IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA; + chip->IO_ADDR_W = ndfc->ndfcbase + NDFC_DATA; + chip->cmd_ctrl = ndfc_hwcontrol; + chip->dev_ready = ndfc_ready; + chip->select_chip = ndfc_select_chip; + chip->chip_delay = 50; + chip->priv = mtd; + chip->options = mtd->pl_chip->options; + chip->controller = &ndfc->ndfc_control; + chip->read_buf = ndfc_read_buf; + chip->write_buf = ndfc_write_buf; + chip->verify_buf = ndfc_verify_buf; + chip->ecc.correct = nand_correct_data; + chip->ecc.hwctl = ndfc_enable_hwecc; + chip->ecc.calculate = ndfc_calculate_ecc; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.size = 256; + chip->ecc.bytes = 3; + chip->ecclayout = mtd->pl_chip->ecclayout; + mtd->mtd.priv = chip; + mtd->mtd.owner = THIS_MODULE; +} + +static int ndfc_chip_probe(struct platform_device *pdev) +{ + struct platform_nand_chip *nc = pdev->dev.platform_data; + struct ndfc_chip_settings *settings = nc->priv; + struct ndfc_controller *ndfc = &ndfc_ctrl; + struct ndfc_nand_mtd *nandmtd; + + if (nc->chip_offset >= NDFC_MAX_BANKS || nc->nr_chips > NDFC_MAX_BANKS) + return -EINVAL; + + /* Set the bank settings */ + __raw_writel(settings->bank_settings, + ndfc->ndfcbase + NDFC_BCFG0 + (nc->chip_offset << 2)); + + nandmtd = &ndfc_mtd[pdev->id]; + if (nandmtd->pl_chip) + return -EBUSY; + + nandmtd->pl_chip = nc; + ndfc_chip_init(nandmtd); + + /* Scan for chips */ + if (nand_scan(&nandmtd->mtd, nc->nr_chips)) { + nandmtd->pl_chip = NULL; + return -ENODEV; + } + +#ifdef CONFIG_MTD_PARTITIONS + printk("Number of partitions %d\n", nc->nr_partitions); + if (nc->nr_partitions) { + /* Add the full device, so complete dumps can be made */ + add_mtd_device(&nandmtd->mtd); + add_mtd_partitions(&nandmtd->mtd, nc->partitions, + nc->nr_partitions); + + } else +#else + add_mtd_device(&nandmtd->mtd); +#endif + + atomic_inc(&ndfc->childs_active); + return 0; +} + +static int ndfc_chip_remove(struct platform_device *pdev) +{ + return 0; +} + +static int ndfc_nand_probe(struct platform_device *pdev) +{ + struct platform_nand_ctrl *nc = pdev->dev.platform_data; + struct ndfc_controller_settings *settings = nc->priv; + struct resource *res = pdev->resource; + struct ndfc_controller *ndfc = &ndfc_ctrl; + unsigned long long phys = settings->ndfc_erpn | res->start; + + ndfc->ndfcbase = ioremap64(phys, res->end - res->start + 1); + if (!ndfc->ndfcbase) { + printk(KERN_ERR "NDFC: ioremap failed\n"); + return -EIO; + } + + __raw_writel(settings->ccr_settings, ndfc->ndfcbase + NDFC_CCR); + + spin_lock_init(&ndfc->ndfc_control.lock); + init_waitqueue_head(&ndfc->ndfc_control.wq); + + platform_set_drvdata(pdev, ndfc); + + printk("NDFC NAND Driver initialized. Chip-Rev: 0x%08x\n", + __raw_readl(ndfc->ndfcbase + NDFC_REVID)); + + return 0; +} + +static int ndfc_nand_remove(struct platform_device *pdev) +{ + struct ndfc_controller *ndfc = platform_get_drvdata(pdev); + + if (atomic_read(&ndfc->childs_active)) + return -EBUSY; + + if (ndfc) { + platform_set_drvdata(pdev, NULL); + iounmap(ndfc_ctrl.ndfcbase); + ndfc_ctrl.ndfcbase = NULL; + } + return 0; +} + +/* driver device registration */ + +static struct platform_driver ndfc_chip_driver = { + .probe = ndfc_chip_probe, + .remove = ndfc_chip_remove, + .driver = { + .name = "ndfc-chip", + .owner = THIS_MODULE, + }, +}; + +static struct platform_driver ndfc_nand_driver = { + .probe = ndfc_nand_probe, + .remove = ndfc_nand_remove, + .driver = { + .name = "ndfc-nand", + .owner = THIS_MODULE, + }, +}; + +static int __init ndfc_nand_init(void) +{ + int ret; + + spin_lock_init(&ndfc_ctrl.ndfc_control.lock); + init_waitqueue_head(&ndfc_ctrl.ndfc_control.wq); + + ret = platform_driver_register(&ndfc_nand_driver); + if (!ret) + ret = platform_driver_register(&ndfc_chip_driver); + return ret; +} + +static void __exit ndfc_nand_exit(void) +{ + platform_driver_unregister(&ndfc_chip_driver); + platform_driver_unregister(&ndfc_nand_driver); +} + +module_init(ndfc_nand_init); +module_exit(ndfc_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>"); +MODULE_DESCRIPTION("Platform driver for NDFC"); diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c index 91a95f34a6ee..22fa65c12ab9 100644 --- a/drivers/mtd/nand/ppchameleonevb.c +++ b/drivers/mtd/nand/ppchameleonevb.c @@ -58,21 +58,21 @@ /* * MTD structure for PPChameleonEVB board */ -static struct mtd_info *ppchameleon_mtd = NULL; +static struct mtd_info *ppchameleon_mtd = NULL; static struct mtd_info *ppchameleonevb_mtd = NULL; /* * Module stuff */ -static unsigned long ppchameleon_fio_pbase = CFG_NAND0_PADDR; +static unsigned long ppchameleon_fio_pbase = CFG_NAND0_PADDR; static unsigned long ppchameleonevb_fio_pbase = CFG_NAND1_PADDR; #ifdef MODULE module_param(ppchameleon_fio_pbase, ulong, 0); module_param(ppchameleonevb_fio_pbase, ulong, 0); #else -__setup("ppchameleon_fio_pbase=",ppchameleon_fio_pbase); -__setup("ppchameleonevb_fio_pbase=",ppchameleonevb_fio_pbase); +__setup("ppchameleon_fio_pbase=", ppchameleon_fio_pbase); +__setup("ppchameleonevb_fio_pbase=", ppchameleonevb_fio_pbase); #endif #ifdef CONFIG_MTD_PARTITIONS @@ -80,82 +80,96 @@ __setup("ppchameleonevb_fio_pbase=",ppchameleonevb_fio_pbase); * Define static partitions for flash devices */ static struct mtd_partition partition_info_hi[] = { - { name: "PPChameleon HI Nand Flash", - offset: 0, - size: 128*1024*1024 } + { .name = "PPChameleon HI Nand Flash", + offset = 0, + .size = 128 * 1024 * 1024 + } }; static struct mtd_partition partition_info_me[] = { - { name: "PPChameleon ME Nand Flash", - offset: 0, - size: 32*1024*1024 } + { .name = "PPChameleon ME Nand Flash", + .offset = 0, + .size = 32 * 1024 * 1024 + } }; static struct mtd_partition partition_info_evb[] = { - { name: "PPChameleonEVB Nand Flash", - offset: 0, - size: 32*1024*1024 } + { .name = "PPChameleonEVB Nand Flash", + .offset = 0, + .size = 32 * 1024 * 1024 + } }; #define NUM_PARTITIONS 1 -extern int parse_cmdline_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - const char *mtd_id); +extern int parse_cmdline_partitions(struct mtd_info *master, struct mtd_partition **pparts, const char *mtd_id); #endif - /* * hardware specific access to control-lines */ -static void ppchameleon_hwcontrol(struct mtd_info *mtdinfo, int cmd) +static void ppchameleon_hwcontrol(struct mtd_info *mtdinfo, int cmd, + unsigned int ctrl) { - switch(cmd) { - - case NAND_CTL_SETCLE: - MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND0_PADDR); - break; - case NAND_CTL_CLRCLE: - MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND0_PADDR); - break; - case NAND_CTL_SETALE: - MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND0_PADDR); - break; - case NAND_CTL_CLRALE: - MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND0_PADDR); - break; - case NAND_CTL_SETNCE: + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { +#error Missing headerfiles. No way to fix this. -tglx + switch (cmd) { + case NAND_CTL_SETCLE: + MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND0_PADDR); + break; + case NAND_CTL_CLRCLE: + MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND0_PADDR); + break; + case NAND_CTL_SETALE: + MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND0_PADDR); + break; + case NAND_CTL_CLRALE: + MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND0_PADDR); + break; + case NAND_CTL_SETNCE: MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND0_PADDR); - break; - case NAND_CTL_CLRNCE: + break; + case NAND_CTL_CLRNCE: MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND0_PADDR); - break; + break; + } } + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } -static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd) +static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd, + unsigned int ctrl) { - switch(cmd) { - - case NAND_CTL_SETCLE: - MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND1_PADDR); - break; - case NAND_CTL_CLRCLE: - MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND1_PADDR); - break; - case NAND_CTL_SETALE: - MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND1_PADDR); - break; - case NAND_CTL_CLRALE: - MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND1_PADDR); - break; - case NAND_CTL_SETNCE: - MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND1_PADDR); - break; - case NAND_CTL_CLRNCE: - MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND1_PADDR); - break; + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { +#error Missing headerfiles. No way to fix this. -tglx + switch (cmd) { + case NAND_CTL_SETCLE: + MACRO_NAND_CTL_SETCLE((unsigned long)CFG_NAND1_PADDR); + break; + case NAND_CTL_CLRCLE: + MACRO_NAND_CTL_CLRCLE((unsigned long)CFG_NAND1_PADDR); + break; + case NAND_CTL_SETALE: + MACRO_NAND_CTL_SETALE((unsigned long)CFG_NAND1_PADDR); + break; + case NAND_CTL_CLRALE: + MACRO_NAND_CTL_CLRALE((unsigned long)CFG_NAND1_PADDR); + break; + case NAND_CTL_SETNCE: + MACRO_NAND_ENABLE_CE((unsigned long)CFG_NAND1_PADDR); + break; + case NAND_CTL_CLRNCE: + MACRO_NAND_DISABLE_CE((unsigned long)CFG_NAND1_PADDR); + break; + } } + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } #ifdef USE_READY_BUSY_PIN @@ -164,15 +178,15 @@ static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd) */ static int ppchameleon_device_ready(struct mtd_info *minfo) { - if (in_be32((volatile unsigned*)GPIO0_IR) & NAND_RB_GPIO_PIN) + if (in_be32((volatile unsigned *)GPIO0_IR) & NAND_RB_GPIO_PIN) return 1; return 0; } static int ppchameleonevb_device_ready(struct mtd_info *minfo) { - if (in_be32((volatile unsigned*)GPIO0_IR) & NAND_EVB_RB_GPIO_PIN) - return 1; + if (in_be32((volatile unsigned *)GPIO0_IR) & NAND_EVB_RB_GPIO_PIN) + return 1; return 0; } #endif @@ -185,7 +199,7 @@ const char *part_probes_evb[] = { "cmdlinepart", NULL }; /* * Main initialization routine */ -static int __init ppchameleonevb_init (void) +static int __init ppchameleonevb_init(void) { struct nand_chip *this; const char *part_type = 0; @@ -194,13 +208,11 @@ static int __init ppchameleonevb_init (void) void __iomem *ppchameleon_fio_base; void __iomem *ppchameleonevb_fio_base; - /********************************* * Processor module NAND (if any) * *********************************/ /* Allocate memory for MTD device structure and private data */ - ppchameleon_mtd = kmalloc(sizeof(struct mtd_info) + - sizeof(struct nand_chip), GFP_KERNEL); + ppchameleon_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!ppchameleon_mtd) { printk("Unable to allocate PPChameleon NAND MTD device structure.\n"); return -ENOMEM; @@ -208,63 +220,65 @@ static int __init ppchameleonevb_init (void) /* map physical address */ ppchameleon_fio_base = ioremap(ppchameleon_fio_pbase, SZ_4M); - if(!ppchameleon_fio_base) { + if (!ppchameleon_fio_base) { printk("ioremap PPChameleon NAND flash failed\n"); kfree(ppchameleon_mtd); return -EIO; } /* Get pointer to private data */ - this = (struct nand_chip *) (&ppchameleon_mtd[1]); + this = (struct nand_chip *)(&ppchameleon_mtd[1]); /* Initialize structures */ - memset((char *) ppchameleon_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(ppchameleon_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ ppchameleon_mtd->priv = this; + ppchameleon_mtd->owner = THIS_MODULE; - /* Initialize GPIOs */ + /* Initialize GPIOs */ /* Pin mapping for NAND chip */ /* - CE GPIO_01 - CLE GPIO_02 - ALE GPIO_03 - R/B GPIO_04 - */ + CE GPIO_01 + CLE GPIO_02 + ALE GPIO_03 + R/B GPIO_04 + */ /* output select */ - out_be32((volatile unsigned*)GPIO0_OSRH, in_be32((volatile unsigned*)GPIO0_OSRH) & 0xC0FFFFFF); + out_be32((volatile unsigned *)GPIO0_OSRH, in_be32((volatile unsigned *)GPIO0_OSRH) & 0xC0FFFFFF); /* three-state select */ - out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xC0FFFFFF); + out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xC0FFFFFF); /* enable output driver */ - out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_nCE_GPIO_PIN | NAND_CLE_GPIO_PIN | NAND_ALE_GPIO_PIN); + out_be32((volatile unsigned *)GPIO0_TCR, + in_be32((volatile unsigned *)GPIO0_TCR) | NAND_nCE_GPIO_PIN | NAND_CLE_GPIO_PIN | NAND_ALE_GPIO_PIN); #ifdef USE_READY_BUSY_PIN /* three-state select */ - out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFF3FFFFF); + out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xFF3FFFFF); /* high-impedecence */ - out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) & (~NAND_RB_GPIO_PIN)); + out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) & (~NAND_RB_GPIO_PIN)); /* input select */ - out_be32((volatile unsigned*)GPIO0_ISR1H, (in_be32((volatile unsigned*)GPIO0_ISR1H) & 0xFF3FFFFF) | 0x00400000); + out_be32((volatile unsigned *)GPIO0_ISR1H, + (in_be32((volatile unsigned *)GPIO0_ISR1H) & 0xFF3FFFFF) | 0x00400000); #endif /* insert callbacks */ this->IO_ADDR_R = ppchameleon_fio_base; this->IO_ADDR_W = ppchameleon_fio_base; - this->hwcontrol = ppchameleon_hwcontrol; + this->cmd_ctrl = ppchameleon_hwcontrol; #ifdef USE_READY_BUSY_PIN this->dev_ready = ppchameleon_device_ready; #endif this->chip_delay = NAND_BIG_DELAY_US; /* ECC mode */ - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; /* Scan to find existence of the device (it could not be mounted) */ - if (nand_scan (ppchameleon_mtd, 1)) { + if (nand_scan(ppchameleon_mtd, 1)) { iounmap((void *)ppchameleon_fio_base); - kfree (ppchameleon_mtd); + kfree(ppchameleon_mtd); goto nand_evb_init; } - #ifndef USE_READY_BUSY_PIN /* Adjust delay if necessary */ if (ppchameleon_mtd->size == NAND_SMALL_SIZE) @@ -275,12 +289,11 @@ static int __init ppchameleonevb_init (void) ppchameleon_mtd->name = "ppchameleon-nand"; mtd_parts_nb = parse_mtd_partitions(ppchameleon_mtd, part_probes, &mtd_parts, 0); if (mtd_parts_nb > 0) - part_type = "command line"; + part_type = "command line"; else - mtd_parts_nb = 0; + mtd_parts_nb = 0; #endif - if (mtd_parts_nb == 0) - { + if (mtd_parts_nb == 0) { if (ppchameleon_mtd->size == NAND_SMALL_SIZE) mtd_parts = partition_info_me; else @@ -293,13 +306,12 @@ static int __init ppchameleonevb_init (void) printk(KERN_NOTICE "Using %s partition definition\n", part_type); add_mtd_partitions(ppchameleon_mtd, mtd_parts, mtd_parts_nb); -nand_evb_init: + nand_evb_init: /**************************** * EVB NAND (always present) * ****************************/ /* Allocate memory for MTD device structure and private data */ - ppchameleonevb_mtd = kmalloc(sizeof(struct mtd_info) + - sizeof(struct nand_chip), GFP_KERNEL); + ppchameleonevb_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!ppchameleonevb_mtd) { printk("Unable to allocate PPChameleonEVB NAND MTD device structure.\n"); return -ENOMEM; @@ -307,77 +319,76 @@ nand_evb_init: /* map physical address */ ppchameleonevb_fio_base = ioremap(ppchameleonevb_fio_pbase, SZ_4M); - if(!ppchameleonevb_fio_base) { + if (!ppchameleonevb_fio_base) { printk("ioremap PPChameleonEVB NAND flash failed\n"); kfree(ppchameleonevb_mtd); return -EIO; } /* Get pointer to private data */ - this = (struct nand_chip *) (&ppchameleonevb_mtd[1]); + this = (struct nand_chip *)(&ppchameleonevb_mtd[1]); /* Initialize structures */ - memset((char *) ppchameleonevb_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(ppchameleonevb_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ ppchameleonevb_mtd->priv = this; - /* Initialize GPIOs */ + /* Initialize GPIOs */ /* Pin mapping for NAND chip */ /* - CE GPIO_14 - CLE GPIO_15 - ALE GPIO_16 - R/B GPIO_31 - */ + CE GPIO_14 + CLE GPIO_15 + ALE GPIO_16 + R/B GPIO_31 + */ /* output select */ - out_be32((volatile unsigned*)GPIO0_OSRH, in_be32((volatile unsigned*)GPIO0_OSRH) & 0xFFFFFFF0); - out_be32((volatile unsigned*)GPIO0_OSRL, in_be32((volatile unsigned*)GPIO0_OSRL) & 0x3FFFFFFF); + out_be32((volatile unsigned *)GPIO0_OSRH, in_be32((volatile unsigned *)GPIO0_OSRH) & 0xFFFFFFF0); + out_be32((volatile unsigned *)GPIO0_OSRL, in_be32((volatile unsigned *)GPIO0_OSRL) & 0x3FFFFFFF); /* three-state select */ - out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFFFFFFF0); - out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0x3FFFFFFF); + out_be32((volatile unsigned *)GPIO0_TSRH, in_be32((volatile unsigned *)GPIO0_TSRH) & 0xFFFFFFF0); + out_be32((volatile unsigned *)GPIO0_TSRL, in_be32((volatile unsigned *)GPIO0_TSRL) & 0x3FFFFFFF); /* enable output driver */ - out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN | + out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN | NAND_EVB_CLE_GPIO_PIN | NAND_EVB_ALE_GPIO_PIN); #ifdef USE_READY_BUSY_PIN /* three-state select */ - out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0xFFFFFFFC); + out_be32((volatile unsigned *)GPIO0_TSRL, in_be32((volatile unsigned *)GPIO0_TSRL) & 0xFFFFFFFC); /* high-impedecence */ - out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) & (~NAND_EVB_RB_GPIO_PIN)); + out_be32((volatile unsigned *)GPIO0_TCR, in_be32((volatile unsigned *)GPIO0_TCR) & (~NAND_EVB_RB_GPIO_PIN)); /* input select */ - out_be32((volatile unsigned*)GPIO0_ISR1L, (in_be32((volatile unsigned*)GPIO0_ISR1L) & 0xFFFFFFFC) | 0x00000001); + out_be32((volatile unsigned *)GPIO0_ISR1L, + (in_be32((volatile unsigned *)GPIO0_ISR1L) & 0xFFFFFFFC) | 0x00000001); #endif /* insert callbacks */ this->IO_ADDR_R = ppchameleonevb_fio_base; this->IO_ADDR_W = ppchameleonevb_fio_base; - this->hwcontrol = ppchameleonevb_hwcontrol; + this->cmd_ctrl = ppchameleonevb_hwcontrol; #ifdef USE_READY_BUSY_PIN this->dev_ready = ppchameleonevb_device_ready; #endif this->chip_delay = NAND_SMALL_DELAY_US; /* ECC mode */ - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; /* Scan to find existence of the device */ - if (nand_scan (ppchameleonevb_mtd, 1)) { + if (nand_scan(ppchameleonevb_mtd, 1)) { iounmap((void *)ppchameleonevb_fio_base); - kfree (ppchameleonevb_mtd); + kfree(ppchameleonevb_mtd); return -ENXIO; } - #ifdef CONFIG_MTD_PARTITIONS ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME; mtd_parts_nb = parse_mtd_partitions(ppchameleonevb_mtd, part_probes_evb, &mtd_parts, 0); if (mtd_parts_nb > 0) - part_type = "command line"; + part_type = "command line"; else - mtd_parts_nb = 0; + mtd_parts_nb = 0; #endif - if (mtd_parts_nb == 0) - { + if (mtd_parts_nb == 0) { mtd_parts = partition_info_evb; mtd_parts_nb = NUM_PARTITIONS; part_type = "static"; @@ -390,18 +401,19 @@ nand_evb_init: /* Return happy */ return 0; } + module_init(ppchameleonevb_init); /* * Clean up routine */ -static void __exit ppchameleonevb_cleanup (void) +static void __exit ppchameleonevb_cleanup(void) { struct nand_chip *this; /* Release resources, unregister device(s) */ - nand_release (ppchameleon_mtd); - nand_release (ppchameleonevb_mtd); + nand_release(ppchameleon_mtd); + nand_release(ppchameleonevb_mtd); /* Release iomaps */ this = (struct nand_chip *) &ppchameleon_mtd[1]; diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c index 4129c03dfd90..f8c49645324d 100644 --- a/drivers/mtd/nand/rtc_from4.c +++ b/drivers/mtd/nand/rtc_from4.c @@ -97,12 +97,12 @@ static struct mtd_info *rtc_from4_mtd = NULL; static void __iomem *rtc_from4_fio_base = (void *)P2SEGADDR(RTC_FROM4_FIO_BASE); static const struct mtd_partition partition_info[] = { - { - .name = "Renesas flash partition 1", - .offset = 0, - .size = MTDPART_SIZ_FULL - }, + { + .name = "Renesas flash partition 1", + .offset = 0, + .size = MTDPART_SIZ_FULL}, }; + #define NUM_PARTITIONS 1 /* @@ -111,8 +111,8 @@ static const struct mtd_partition partition_info[] = { * NAND_BBT_CREATE and/or NAND_BBT_WRITE * */ -static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; -static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; +static uint8_t bbt_pattern[] = { 'B', 'b', 't', '0' }; +static uint8_t mirror_pattern[] = { '1', 't', 'b', 'B' }; static struct nand_bbt_descr rtc_from4_bbt_main_descr = { .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE @@ -134,8 +134,6 @@ static struct nand_bbt_descr rtc_from4_bbt_mirror_descr = { .pattern = mirror_pattern }; - - #ifdef RTC_FROM4_HWECC /* the Reed Solomon control structure */ @@ -144,15 +142,14 @@ static struct rs_control *rs_decoder; /* * hardware specific Out Of Band information */ -static struct nand_oobinfo rtc_from4_nand_oobinfo = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout rtc_from4_nand_oobinfo = { .eccbytes = 32, .eccpos = { - 0, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31}, - .oobfree = { {32, 32} } + 0, 1, 2, 3, 4, 5, 6, 7, + 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, + 24, 25, 26, 27, 28, 29, 30, 31}, + .oobfree = {{32, 32}} }; /* Aargh. I missed the reversed bit order, when I @@ -162,44 +159,42 @@ static struct nand_oobinfo rtc_from4_nand_oobinfo = { * of the ecc byte which we get from the FPGA */ static uint8_t revbits[256] = { - 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, - 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, - 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, - 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, - 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, - 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, - 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, - 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, - 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, - 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, - 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, - 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, - 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, - 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, - 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, - 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, - 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, - 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, - 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, - 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, - 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, - 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, - 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, - 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, - 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, - 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, - 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, - 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, - 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, - 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, - 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, - 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, + 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, + 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, + 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, + 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, + 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, + 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, + 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, + 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, + 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, + 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, + 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, + 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, + 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, + 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, + 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, + 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, + 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, + 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, + 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, + 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, + 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, + 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, + 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, + 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, + 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, + 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, + 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, + 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, + 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, + 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, + 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, + 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, }; #endif - - /* * rtc_from4_hwcontrol - hardware specific access to control-lines * @mtd: MTD device structure @@ -212,35 +207,20 @@ static uint8_t revbits[256] = { * Address lines (A24-A22), so no action is required here. * */ -static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd) +static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { - struct nand_chip* this = (struct nand_chip *) (mtd->priv); - - switch(cmd) { + struct nand_chip *chip = (mtd->priv); - case NAND_CTL_SETCLE: - this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_CLE); - break; - case NAND_CTL_CLRCLE: - this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_CLE); - break; - - case NAND_CTL_SETALE: - this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_ALE); - break; - case NAND_CTL_CLRALE: - this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_ALE); - break; + if (cmd == NAND_CMD_NONE) + return; - case NAND_CTL_SETNCE: - break; - case NAND_CTL_CLRNCE: - break; - - } + if (ctrl & NAND_CLE) + writeb(cmd, chip->IO_ADDR_W | RTC_FROM4_CLE); + else + writeb(cmd, chip->IO_ADDR_W | RTC_FROM4_ALE); } - /* * rtc_from4_nand_select_chip - hardware specific chip select * @mtd: MTD device structure @@ -252,26 +232,25 @@ static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd) */ static void rtc_from4_nand_select_chip(struct mtd_info *mtd, int chip) { - struct nand_chip *this = mtd->priv; + struct nand_chip *this = mtd->priv; this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R & ~RTC_FROM4_NAND_ADDR_MASK); this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_NAND_ADDR_MASK); - switch(chip) { + switch (chip) { - case 0: /* select slot 3 chip */ + case 0: /* select slot 3 chip */ this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R | RTC_FROM4_NAND_ADDR_SLOT3); this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_NAND_ADDR_SLOT3); - break; - case 1: /* select slot 4 chip */ + break; + case 1: /* select slot 4 chip */ this->IO_ADDR_R = (void __iomem *)((unsigned long)this->IO_ADDR_R | RTC_FROM4_NAND_ADDR_SLOT4); this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_NAND_ADDR_SLOT4); - break; + break; - } + } } - /* * rtc_from4_nand_device_ready - hardware specific ready/busy check * @mtd: MTD device structure @@ -290,7 +269,6 @@ static int rtc_from4_nand_device_ready(struct mtd_info *mtd) } - /* * deplete - code to perform device recovery in case there was a power loss * @mtd: MTD device structure @@ -306,24 +284,23 @@ static int rtc_from4_nand_device_ready(struct mtd_info *mtd) */ static void deplete(struct mtd_info *mtd, int chip) { - struct nand_chip *this = mtd->priv; + struct nand_chip *this = mtd->priv; - /* wait until device is ready */ - while (!this->dev_ready(mtd)); + /* wait until device is ready */ + while (!this->dev_ready(mtd)) ; this->select_chip(mtd, chip); /* Send the commands for device recovery, phase 1 */ - this->cmdfunc (mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0000); - this->cmdfunc (mtd, NAND_CMD_DEPLETE2, -1, -1); + this->cmdfunc(mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0000); + this->cmdfunc(mtd, NAND_CMD_DEPLETE2, -1, -1); /* Send the commands for device recovery, phase 2 */ - this->cmdfunc (mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0004); - this->cmdfunc (mtd, NAND_CMD_DEPLETE2, -1, -1); + this->cmdfunc(mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0004); + this->cmdfunc(mtd, NAND_CMD_DEPLETE2, -1, -1); } - #ifdef RTC_FROM4_HWECC /* * rtc_from4_enable_hwecc - hardware specific hardware ECC enable function @@ -335,39 +312,35 @@ static void deplete(struct mtd_info *mtd, int chip) */ static void rtc_from4_enable_hwecc(struct mtd_info *mtd, int mode) { - volatile unsigned short * rs_ecc_ctl = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CTL); + volatile unsigned short *rs_ecc_ctl = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CTL); unsigned short status; switch (mode) { - case NAND_ECC_READ : - status = RTC_FROM4_RS_ECC_CTL_CLR - | RTC_FROM4_RS_ECC_CTL_FD_E; + case NAND_ECC_READ: + status = RTC_FROM4_RS_ECC_CTL_CLR | RTC_FROM4_RS_ECC_CTL_FD_E; *rs_ecc_ctl = status; break; - case NAND_ECC_READSYN : - status = 0x00; + case NAND_ECC_READSYN: + status = 0x00; *rs_ecc_ctl = status; break; - case NAND_ECC_WRITE : - status = RTC_FROM4_RS_ECC_CTL_CLR - | RTC_FROM4_RS_ECC_CTL_GEN - | RTC_FROM4_RS_ECC_CTL_FD_E; + case NAND_ECC_WRITE: + status = RTC_FROM4_RS_ECC_CTL_CLR | RTC_FROM4_RS_ECC_CTL_GEN | RTC_FROM4_RS_ECC_CTL_FD_E; *rs_ecc_ctl = status; break; - default: + default: BUG(); break; } } - /* * rtc_from4_calculate_ecc - hardware specific code to read ECC code * @mtd: MTD device structure @@ -383,7 +356,7 @@ static void rtc_from4_enable_hwecc(struct mtd_info *mtd, int mode) */ static void rtc_from4_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) { - volatile unsigned short * rs_eccn = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECCN); + volatile unsigned short *rs_eccn = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECCN); unsigned short value; int i; @@ -395,7 +368,6 @@ static void rtc_from4_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_c ecc_code[7] |= 0x0f; /* set the last four bits (not used) */ } - /* * rtc_from4_correct_data - hardware specific code to correct data using ECC code * @mtd: MTD device structure @@ -414,7 +386,7 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha unsigned short status; uint16_t par[6], syn[6]; uint8_t ecc[8]; - volatile unsigned short *rs_ecc; + volatile unsigned short *rs_ecc; status = *((volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC_CHK)); @@ -424,23 +396,18 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha /* Read the syndrom pattern from the FPGA and correct the bitorder */ rs_ecc = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC); - for (i = 0; i < 8; i++) { - ecc[i] = revbits[(*rs_ecc) & 0xFF]; - rs_ecc++; - } + for (i = 0; i < 8; i++) { + ecc[i] = revbits[(*rs_ecc) & 0xFF]; + rs_ecc++; + } /* convert into 6 10bit syndrome fields */ - par[5] = rs_decoder->index_of[(((uint16_t)ecc[0] >> 0) & 0x0ff) | - (((uint16_t)ecc[1] << 8) & 0x300)]; - par[4] = rs_decoder->index_of[(((uint16_t)ecc[1] >> 2) & 0x03f) | - (((uint16_t)ecc[2] << 6) & 0x3c0)]; - par[3] = rs_decoder->index_of[(((uint16_t)ecc[2] >> 4) & 0x00f) | - (((uint16_t)ecc[3] << 4) & 0x3f0)]; - par[2] = rs_decoder->index_of[(((uint16_t)ecc[3] >> 6) & 0x003) | - (((uint16_t)ecc[4] << 2) & 0x3fc)]; - par[1] = rs_decoder->index_of[(((uint16_t)ecc[5] >> 0) & 0x0ff) | - (((uint16_t)ecc[6] << 8) & 0x300)]; - par[0] = (((uint16_t)ecc[6] >> 2) & 0x03f) | (((uint16_t)ecc[7] << 6) & 0x3c0); + par[5] = rs_decoder->index_of[(((uint16_t) ecc[0] >> 0) & 0x0ff) | (((uint16_t) ecc[1] << 8) & 0x300)]; + par[4] = rs_decoder->index_of[(((uint16_t) ecc[1] >> 2) & 0x03f) | (((uint16_t) ecc[2] << 6) & 0x3c0)]; + par[3] = rs_decoder->index_of[(((uint16_t) ecc[2] >> 4) & 0x00f) | (((uint16_t) ecc[3] << 4) & 0x3f0)]; + par[2] = rs_decoder->index_of[(((uint16_t) ecc[3] >> 6) & 0x003) | (((uint16_t) ecc[4] << 2) & 0x3fc)]; + par[1] = rs_decoder->index_of[(((uint16_t) ecc[5] >> 0) & 0x0ff) | (((uint16_t) ecc[6] << 8) & 0x300)]; + par[0] = (((uint16_t) ecc[6] >> 2) & 0x03f) | (((uint16_t) ecc[7] << 6) & 0x3c0); /* Convert to computable syndrome */ for (i = 0; i < 6; i++) { @@ -453,16 +420,14 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha syn[i] = rs_decoder->index_of[syn[i]]; } - /* Let the library code do its magic.*/ - res = decode_rs8(rs_decoder, (uint8_t *)buf, par, 512, syn, 0, NULL, 0xff, NULL); + /* Let the library code do its magic. */ + res = decode_rs8(rs_decoder, (uint8_t *) buf, par, 512, syn, 0, NULL, 0xff, NULL); if (res > 0) { - DEBUG (MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: " - "ECC corrected %d errors on read\n", res); + DEBUG(MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: " "ECC corrected %d errors on read\n", res); } return res; } - /** * rtc_from4_errstat - perform additional error status checks * @mtd: MTD device structure @@ -478,54 +443,66 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha * note: see pages 34..37 of data sheet for details. * */ -static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page) +static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, + int state, int status, int page) { - int er_stat=0; - int rtn, retlen; - size_t len; + int er_stat = 0; + int rtn, retlen; + size_t len; uint8_t *buf; - int i; - - this->cmdfunc (mtd, NAND_CMD_STATUS_CLEAR, -1, -1); - - if (state == FL_ERASING) { - for (i=0; i<4; i++) { - if (status & 1<<(i+1)) { - this->cmdfunc (mtd, (NAND_CMD_STATUS_ERROR + i + 1), -1, -1); - rtn = this->read_byte(mtd); - this->cmdfunc (mtd, NAND_CMD_STATUS_RESET, -1, -1); - if (!(rtn & ERR_STAT_ECC_AVAILABLE)) { - er_stat |= 1<<(i+1); /* err_ecc_not_avail */ - } - } + int i; + + this->cmdfunc(mtd, NAND_CMD_STATUS_CLEAR, -1, -1); + + if (state == FL_ERASING) { + + for (i = 0; i < 4; i++) { + if (!(status & 1 << (i + 1))) + continue; + this->cmdfunc(mtd, (NAND_CMD_STATUS_ERROR + i + 1), + -1, -1); + rtn = this->read_byte(mtd); + this->cmdfunc(mtd, NAND_CMD_STATUS_RESET, -1, -1); + + /* err_ecc_not_avail */ + if (!(rtn & ERR_STAT_ECC_AVAILABLE)) + er_stat |= 1 << (i + 1); } + } else if (state == FL_WRITING) { + + unsigned long corrected = mtd->ecc_stats.corrected; + /* single bank write logic */ - this->cmdfunc (mtd, NAND_CMD_STATUS_ERROR, -1, -1); + this->cmdfunc(mtd, NAND_CMD_STATUS_ERROR, -1, -1); rtn = this->read_byte(mtd); - this->cmdfunc (mtd, NAND_CMD_STATUS_RESET, -1, -1); + this->cmdfunc(mtd, NAND_CMD_STATUS_RESET, -1, -1); + if (!(rtn & ERR_STAT_ECC_AVAILABLE)) { - er_stat |= 1<<1; /* err_ecc_not_avail */ - } else { - len = mtd->oobblock; - buf = kmalloc (len, GFP_KERNEL); - if (!buf) { - printk (KERN_ERR "rtc_from4_errstat: Out of memory!\n"); - er_stat = 1; /* if we can't check, assume failed */ - } else { - /* recovery read */ - /* page read */ - rtn = nand_do_read_ecc (mtd, page, len, &retlen, buf, NULL, this->autooob, 1); - if (rtn) { /* if read failed or > 1-bit error corrected */ - er_stat |= 1<<1; /* ECC read failed */ - } - kfree(buf); - } + /* err_ecc_not_avail */ + er_stat |= 1 << 1; + goto out; + } + + len = mtd->writesize; + buf = kmalloc(len, GFP_KERNEL); + if (!buf) { + printk(KERN_ERR "rtc_from4_errstat: Out of memory!\n"); + er_stat = 1; + goto out; } + + /* recovery read */ + rtn = nand_do_read(mtd, page, len, &retlen, buf); + + /* if read failed or > 1-bit error corrected */ + if (rtn || (mtd->ecc_stats.corrected - corrected) > 1) { + er_stat |= 1 << 1; + kfree(buf); } rtn = status; - if (er_stat == 0) { /* if ECC is available */ + if (er_stat == 0) { /* if ECC is available */ rtn = (status & ~NAND_STATUS_FAIL); /* clear the error bit */ } @@ -533,33 +510,32 @@ static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, int s } #endif - /* * Main initialization routine */ -int __init rtc_from4_init (void) +static int __init rtc_from4_init(void) { struct nand_chip *this; unsigned short bcr1, bcr2, wcr2; int i; /* Allocate memory for MTD device structure and private data */ - rtc_from4_mtd = kmalloc(sizeof(struct mtd_info) + sizeof (struct nand_chip), - GFP_KERNEL); + rtc_from4_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!rtc_from4_mtd) { - printk ("Unable to allocate Renesas NAND MTD device structure.\n"); + printk("Unable to allocate Renesas NAND MTD device structure.\n"); return -ENOMEM; } /* Get pointer to private data */ - this = (struct nand_chip *) (&rtc_from4_mtd[1]); + this = (struct nand_chip *)(&rtc_from4_mtd[1]); /* Initialize structures */ - memset((char *) rtc_from4_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(rtc_from4_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ rtc_from4_mtd->priv = this; + rtc_from4_mtd->owner = THIS_MODULE; /* set area 5 as PCMCIA mode to clear the spec of tDH(Data hold time;9ns min) */ bcr1 = *SH77X9_BCR1 & ~0x0002; @@ -580,9 +556,9 @@ int __init rtc_from4_init (void) this->IO_ADDR_R = rtc_from4_fio_base; this->IO_ADDR_W = rtc_from4_fio_base; /* Set address of hardware control function */ - this->hwcontrol = rtc_from4_hwcontrol; + this->cmd_ctrl = rtc_from4_hwcontrol; /* Set address of chip select function */ - this->select_chip = rtc_from4_nand_select_chip; + this->select_chip = rtc_from4_nand_select_chip; /* command delay time (in us) */ this->chip_delay = 100; /* return the status of the Ready/Busy line */ @@ -591,19 +567,20 @@ int __init rtc_from4_init (void) #ifdef RTC_FROM4_HWECC printk(KERN_INFO "rtc_from4_init: using hardware ECC detection.\n"); - this->eccmode = NAND_ECC_HW8_512; - this->options |= NAND_HWECC_SYNDROME; + this->ecc.mode = NAND_ECC_HW_SYNDROME; + this->ecc.size = 512; + this->ecc.bytes = 8; /* return the status of extra status and ECC checks */ this->errstat = rtc_from4_errstat; /* set the nand_oobinfo to support FPGA H/W error detection */ - this->autooob = &rtc_from4_nand_oobinfo; - this->enable_hwecc = rtc_from4_enable_hwecc; - this->calculate_ecc = rtc_from4_calculate_ecc; - this->correct_data = rtc_from4_correct_data; + this->ecc.layout = &rtc_from4_nand_oobinfo; + this->ecc.hwctl = rtc_from4_enable_hwecc; + this->ecc.calculate = rtc_from4_calculate_ecc; + this->ecc.correct = rtc_from4_correct_data; #else printk(KERN_INFO "rtc_from4_init: using software ECC detection.\n"); - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; #endif /* set the bad block tables to support debugging */ @@ -617,7 +594,7 @@ int __init rtc_from4_init (void) } /* Perform 'device recovery' for each chip in case there was a power loss. */ - for (i=0; i < this->numchips; i++) { + for (i = 0; i < this->numchips; i++) { deplete(rtc_from4_mtd, i); } @@ -643,7 +620,7 @@ int __init rtc_from4_init (void) */ rs_decoder = init_rs(10, 0x409, 0, 1, 6); if (!rs_decoder) { - printk (KERN_ERR "Could not create a RS decoder\n"); + printk(KERN_ERR "Could not create a RS decoder\n"); nand_release(rtc_from4_mtd); kfree(rtc_from4_mtd); return -ENOMEM; @@ -652,20 +629,19 @@ int __init rtc_from4_init (void) /* Return happy */ return 0; } -module_init(rtc_from4_init); +module_init(rtc_from4_init); /* * Clean up routine */ -#ifdef MODULE -static void __exit rtc_from4_cleanup (void) +static void __exit rtc_from4_cleanup(void) { /* Release resource, unregister partitions */ nand_release(rtc_from4_mtd); /* Free the MTD device structure */ - kfree (rtc_from4_mtd); + kfree(rtc_from4_mtd); #ifdef RTC_FROM4_HWECC /* Free the reed solomon resources */ @@ -674,10 +650,9 @@ static void __exit rtc_from4_cleanup (void) } #endif } + module_exit(rtc_from4_cleanup); -#endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("d.marlin <dmarlin@redhat.com"); MODULE_DESCRIPTION("Board-specific glue layer for AG-AND flash on Renesas FROM_BOARD4"); - diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 5b55599739f3..2c262fe03d8a 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -18,8 +18,9 @@ * 20-Jun-2005 BJD Updated s3c2440 support, fixed timing bug * 08-Jul-2005 BJD Fix OOPS when no platform data supplied * 20-Oct-2005 BJD Fix timing calculation bug + * 14-Jan-2006 BJD Allow clock to be stopped when idle * - * $Id: s3c2410.c,v 1.20 2005/11/07 11:14:31 gleixner Exp $ + * $Id: s3c2410.c,v 1.23 2006/04/01 18:06:29 bjd Exp $ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -36,9 +37,6 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#include <config/mtd/nand/s3c2410/hwecc.h> -#include <config/mtd/nand/s3c2410/debug.h> - #ifdef CONFIG_MTD_NAND_S3C2410_DEBUG #define DEBUG #endif @@ -73,14 +71,20 @@ static int hardware_ecc = 1; static int hardware_ecc = 0; #endif +#ifdef CONFIG_MTD_NAND_S3C2410_CLKSTOP +static int clock_stop = 1; +#else +static const int clock_stop = 0; +#endif + + /* new oob placement block for use with hardware ecc generation */ -static struct nand_oobinfo nand_hw_eccoob = { - .useecc = MTD_NANDECC_AUTOPLACE, - .eccbytes = 3, - .eccpos = {0, 1, 2 }, - .oobfree = { {8, 8} } +static struct nand_ecclayout nand_hw_eccoob = { + .eccbytes = 3, + .eccpos = {0, 1, 2}, + .oobfree = {{8, 8}} }; /* controller and mtd information */ @@ -135,6 +139,11 @@ static struct s3c2410_platform_nand *to_nand_plat(struct platform_device *dev) return dev->dev.platform_data; } +static inline int allow_clk_stop(struct s3c2410_nand_info *info) +{ + return clock_stop; +} + /* timing calculations */ #define NS_IN_KHZ 1000000 @@ -149,8 +158,7 @@ static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max) pr_debug("result %d from %ld, %d\n", result, clk, wanted); if (result > max) { - printk("%d ns is too big for current clock rate %ld\n", - wanted, clk); + printk("%d ns is too big for current clock rate %ld\n", wanted, clk); return -1; } @@ -164,8 +172,7 @@ static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max) /* controller setup */ -static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, - struct platform_device *pdev) +static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_device *pdev) { struct s3c2410_platform_nand *plat = to_nand_plat(pdev); unsigned long clkrate = clk_get_rate(info->clk); @@ -177,7 +184,7 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, clkrate /= 1000; /* turn clock into kHz for ease of use */ if (plat != NULL) { - tacls = s3c2410_nand_calc_rate(plat->tacls, clkrate, 4); + tacls = s3c2410_nand_calc_rate(plat->tacls, clkrate, 4); twrph0 = s3c2410_nand_calc_rate(plat->twrph0, clkrate, 8); twrph1 = s3c2410_nand_calc_rate(plat->twrph1, clkrate, 8); } else { @@ -193,19 +200,22 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, } printk(KERN_INFO PFX "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n", - tacls, to_ns(tacls, clkrate), - twrph0, to_ns(twrph0, clkrate), - twrph1, to_ns(twrph1, clkrate)); + tacls, to_ns(tacls, clkrate), twrph0, to_ns(twrph0, clkrate), twrph1, to_ns(twrph1, clkrate)); if (!info->is_s3c2440) { - cfg = S3C2410_NFCONF_EN; - cfg |= S3C2410_NFCONF_TACLS(tacls-1); - cfg |= S3C2410_NFCONF_TWRPH0(twrph0-1); - cfg |= S3C2410_NFCONF_TWRPH1(twrph1-1); + cfg = S3C2410_NFCONF_EN; + cfg |= S3C2410_NFCONF_TACLS(tacls - 1); + cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); + cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); } else { - cfg = S3C2440_NFCONF_TACLS(tacls-1); - cfg |= S3C2440_NFCONF_TWRPH0(twrph0-1); - cfg |= S3C2440_NFCONF_TWRPH1(twrph1-1); + cfg = S3C2440_NFCONF_TACLS(tacls - 1); + cfg |= S3C2440_NFCONF_TWRPH0(twrph0 - 1); + cfg |= S3C2440_NFCONF_TWRPH1(twrph1 - 1); + + /* enable the controller and de-assert nFCE */ + + writel(S3C2440_NFCONT_ENABLE | S3C2440_NFCONT_ENABLE, + info->regs + S3C2440_NFCONT); } pr_debug(PFX "NF_CONF is 0x%lx\n", cfg); @@ -229,7 +239,10 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip) info = nmtd->info; bit = (info->is_s3c2440) ? S3C2440_NFCONT_nFCE : S3C2410_NFCONF_nFCE; - reg = info->regs+((info->is_s3c2440) ? S3C2440_NFCONT:S3C2410_NFCONF); + reg = info->regs + ((info->is_s3c2440) ? S3C2440_NFCONT : S3C2410_NFCONF); + + if (chip != -1 && allow_clk_stop(info)) + clk_enable(info->clk); cur = readl(reg); @@ -243,77 +256,51 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip) if (info->platform != NULL) { if (info->platform->select_chip != NULL) - (info->platform->select_chip)(nmtd->set, chip); + (info->platform->select_chip) (nmtd->set, chip); } cur &= ~bit; } writel(cur, reg); + + if (chip == -1 && allow_clk_stop(info)) + clk_disable(info->clk); } -/* command and control functions - * - * Note, these all use tglx's method of changing the IO_ADDR_W field - * to make the code simpler, and use the nand layer's code to issue the - * command and address sequences via the proper IO ports. +/* s3c2410_nand_hwcontrol * + * Issue command and address cycles to the chip */ -static void s3c2410_nand_hwcontrol(struct mtd_info *mtd, int cmd) +static void s3c2410_nand_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); - struct nand_chip *chip = mtd->priv; - - switch (cmd) { - case NAND_CTL_SETNCE: - case NAND_CTL_CLRNCE: - printk(KERN_ERR "%s: called for NCE\n", __FUNCTION__); - break; - - case NAND_CTL_SETCLE: - chip->IO_ADDR_W = info->regs + S3C2410_NFCMD; - break; - - case NAND_CTL_SETALE: - chip->IO_ADDR_W = info->regs + S3C2410_NFADDR; - break; - - /* NAND_CTL_CLRCLE: */ - /* NAND_CTL_CLRALE: */ - default: - chip->IO_ADDR_W = info->regs + S3C2410_NFDATA; - break; - } + + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writeb(cmd, info->regs + S3C2410_NFCMD); + else + writeb(cmd, info->regs + S3C2410_NFADDR); } /* command and control functions */ -static void s3c2440_nand_hwcontrol(struct mtd_info *mtd, int cmd) +static void s3c2440_nand_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); - struct nand_chip *chip = mtd->priv; - - switch (cmd) { - case NAND_CTL_SETNCE: - case NAND_CTL_CLRNCE: - printk(KERN_ERR "%s: called for NCE\n", __FUNCTION__); - break; - - case NAND_CTL_SETCLE: - chip->IO_ADDR_W = info->regs + S3C2440_NFCMD; - break; - - case NAND_CTL_SETALE: - chip->IO_ADDR_W = info->regs + S3C2440_NFADDR; - break; - - /* NAND_CTL_CLRCLE: */ - /* NAND_CTL_CLRALE: */ - default: - chip->IO_ADDR_W = info->regs + S3C2440_NFDATA; - break; - } + + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writeb(cmd, info->regs + S3C2440_NFCMD); + else + writeb(cmd, info->regs + S3C2440_NFADDR); } /* s3c2410_nand_devready() @@ -330,22 +317,16 @@ static int s3c2410_nand_devready(struct mtd_info *mtd) return readb(info->regs + S3C2410_NFSTAT) & S3C2410_NFSTAT_BUSY; } - /* ECC handling functions */ -static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, - u_char *read_ecc, u_char *calc_ecc) +static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) { - pr_debug("s3c2410_nand_correct_data(%p,%p,%p,%p)\n", - mtd, dat, read_ecc, calc_ecc); + pr_debug("s3c2410_nand_correct_data(%p,%p,%p,%p)\n", mtd, dat, read_ecc, calc_ecc); pr_debug("eccs: read %02x,%02x,%02x vs calc %02x,%02x,%02x\n", - read_ecc[0], read_ecc[1], read_ecc[2], - calc_ecc[0], calc_ecc[1], calc_ecc[2]); + read_ecc[0], read_ecc[1], read_ecc[2], calc_ecc[0], calc_ecc[1], calc_ecc[2]); - if (read_ecc[0] == calc_ecc[0] && - read_ecc[1] == calc_ecc[1] && - read_ecc[2] == calc_ecc[2]) + if (read_ecc[0] == calc_ecc[0] && read_ecc[1] == calc_ecc[1] && read_ecc[2] == calc_ecc[2]) return 0; /* we curently have no method for correcting the error */ @@ -378,8 +359,7 @@ static void s3c2440_nand_enable_hwecc(struct mtd_info *mtd, int mode) writel(ctrl | S3C2440_NFCONT_INITECC, info->regs + S3C2440_NFCONT); } -static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, - const u_char *dat, u_char *ecc_code) +static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) { struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); @@ -387,15 +367,12 @@ static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, ecc_code[1] = readb(info->regs + S3C2410_NFECC + 1); ecc_code[2] = readb(info->regs + S3C2410_NFECC + 2); - pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", - ecc_code[0], ecc_code[1], ecc_code[2]); + pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", ecc_code[0], ecc_code[1], ecc_code[2]); return 0; } - -static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, - const u_char *dat, u_char *ecc_code) +static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) { struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); unsigned long ecc = readl(info->regs + S3C2440_NFMECC0); @@ -404,13 +381,11 @@ static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, ecc_code[1] = ecc >> 8; ecc_code[2] = ecc >> 16; - pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", - ecc_code[0], ecc_code[1], ecc_code[2]); + pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", ecc_code[0], ecc_code[1], ecc_code[2]); return 0; } - /* over-ride the standard functions for a little more speed. We can * use read/write block to move the data buffers to/from the controller */ @@ -421,8 +396,7 @@ static void s3c2410_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) readsb(this->IO_ADDR_R, buf, len); } -static void s3c2410_nand_write_buf(struct mtd_info *mtd, - const u_char *buf, int len) +static void s3c2410_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; writesb(this->IO_ADDR_W, buf, len); @@ -459,7 +433,8 @@ static int s3c2410_nand_remove(struct platform_device *pdev) /* free the common resources */ if (info->clk != NULL && !IS_ERR(info->clk)) { - clk_disable(info->clk); + if (!allow_clk_stop(info)) + clk_disable(info->clk); clk_put(info->clk); } @@ -488,9 +463,7 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info, return add_mtd_device(&mtd->mtd); if (set->nr_partitions > 0 && set->partitions != NULL) { - return add_mtd_partitions(&mtd->mtd, - set->partitions, - set->nr_partitions); + return add_mtd_partitions(&mtd->mtd, set->partitions, set->nr_partitions); } return add_mtd_device(&mtd->mtd); @@ -517,7 +490,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, chip->IO_ADDR_R = info->regs + S3C2410_NFDATA; chip->IO_ADDR_W = info->regs + S3C2410_NFDATA; - chip->hwcontrol = s3c2410_nand_hwcontrol; + chip->cmd_ctrl = s3c2410_nand_hwcontrol; chip->dev_ready = s3c2410_nand_devready; chip->write_buf = s3c2410_nand_write_buf; chip->read_buf = s3c2410_nand_read_buf; @@ -530,26 +503,29 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, if (info->is_s3c2440) { chip->IO_ADDR_R = info->regs + S3C2440_NFDATA; chip->IO_ADDR_W = info->regs + S3C2440_NFDATA; - chip->hwcontrol = s3c2440_nand_hwcontrol; + chip->cmd_ctrl = s3c2440_nand_hwcontrol; } nmtd->info = info; nmtd->mtd.priv = chip; + nmtd->mtd.owner = THIS_MODULE; nmtd->set = set; if (hardware_ecc) { - chip->correct_data = s3c2410_nand_correct_data; - chip->enable_hwecc = s3c2410_nand_enable_hwecc; - chip->calculate_ecc = s3c2410_nand_calculate_ecc; - chip->eccmode = NAND_ECC_HW3_512; - chip->autooob = &nand_hw_eccoob; + chip->ecc.correct = s3c2410_nand_correct_data; + chip->ecc.hwctl = s3c2410_nand_enable_hwecc; + chip->ecc.calculate = s3c2410_nand_calculate_ecc; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.size = 512; + chip->ecc.bytes = 3; + chip->ecc.layout = &nand_hw_eccoob; if (info->is_s3c2440) { - chip->enable_hwecc = s3c2440_nand_enable_hwecc; - chip->calculate_ecc = s3c2440_nand_calculate_ecc; + chip->ecc.hwctl = s3c2440_nand_enable_hwecc; + chip->ecc.calculate = s3c2440_nand_calculate_ecc; } } else { - chip->eccmode = NAND_ECC_SOFT; + chip->ecc.mode = NAND_ECC_SOFT; } } @@ -654,13 +630,11 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440) nmtd = info->mtds; for (setno = 0; setno < nr_sets; setno++, nmtd++) { - pr_debug("initialising set %d (%p, info %p)\n", - setno, nmtd, info); + pr_debug("initialising set %d (%p, info %p)\n", setno, nmtd, info); s3c2410_nand_init_chip(info, nmtd, sets); - nmtd->scan_res = nand_scan(&nmtd->mtd, - (sets) ? sets->nr_chips : 1); + nmtd->scan_res = nand_scan(&nmtd->mtd, (sets) ? sets->nr_chips : 1); if (nmtd->scan_res == 0) { s3c2410_nand_add_partition(info, nmtd, sets); @@ -670,6 +644,11 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440) sets++; } + if (allow_clk_stop(info)) { + dev_info(&pdev->dev, "clock idle support enabled\n"); + clk_disable(info->clk); + } + pr_debug("initialised ok\n"); return 0; @@ -681,6 +660,41 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440) return err; } +/* PM Support */ +#ifdef CONFIG_PM + +static int s3c24xx_nand_suspend(struct platform_device *dev, pm_message_t pm) +{ + struct s3c2410_nand_info *info = platform_get_drvdata(dev); + + if (info) { + if (!allow_clk_stop(info)) + clk_disable(info->clk); + } + + return 0; +} + +static int s3c24xx_nand_resume(struct platform_device *dev) +{ + struct s3c2410_nand_info *info = platform_get_drvdata(dev); + + if (info) { + clk_enable(info->clk); + s3c2410_nand_inithw(info, dev); + + if (allow_clk_stop(info)) + clk_disable(info->clk); + } + + return 0; +} + +#else +#define s3c24xx_nand_suspend NULL +#define s3c24xx_nand_resume NULL +#endif + /* driver device registration */ static int s3c2410_nand_probe(struct platform_device *dev) @@ -696,6 +710,8 @@ static int s3c2440_nand_probe(struct platform_device *dev) static struct platform_driver s3c2410_nand_driver = { .probe = s3c2410_nand_probe, .remove = s3c2410_nand_remove, + .suspend = s3c24xx_nand_suspend, + .resume = s3c24xx_nand_resume, .driver = { .name = "s3c2410-nand", .owner = THIS_MODULE, @@ -705,6 +721,8 @@ static struct platform_driver s3c2410_nand_driver = { static struct platform_driver s3c2440_nand_driver = { .probe = s3c2440_nand_probe, .remove = s3c2410_nand_remove, + .suspend = s3c24xx_nand_suspend, + .resume = s3c24xx_nand_resume, .driver = { .name = "s3c2440-nand", .owner = THIS_MODULE, diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index 1924a4f137c7..21743658d150 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -46,7 +46,6 @@ static int sharpsl_phys_base = 0x0C000000; #define FLCLE (1 << 1) #define FLCE0 (1 << 0) - /* * MTD structure for SharpSL */ @@ -60,50 +59,44 @@ static struct mtd_info *sharpsl_mtd = NULL; static int nr_partitions; static struct mtd_partition sharpsl_nand_default_partition_info[] = { { - .name = "System Area", - .offset = 0, - .size = 7 * 1024 * 1024, - }, + .name = "System Area", + .offset = 0, + .size = 7 * 1024 * 1024, + }, { - .name = "Root Filesystem", - .offset = 7 * 1024 * 1024, - .size = 30 * 1024 * 1024, - }, + .name = "Root Filesystem", + .offset = 7 * 1024 * 1024, + .size = 30 * 1024 * 1024, + }, { - .name = "Home Filesystem", - .offset = MTDPART_OFS_APPEND , - .size = MTDPART_SIZ_FULL , - }, + .name = "Home Filesystem", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, }; /* * hardware specific access to control-lines + * ctrl: + * NAND_CNE: bit 0 -> bit 0 & 4 + * NAND_CLE: bit 1 -> bit 1 + * NAND_ALE: bit 2 -> bit 2 + * */ -static void -sharpsl_nand_hwcontrol(struct mtd_info* mtd, int cmd) +static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { - switch (cmd) { - case NAND_CTL_SETCLE: - writeb(readb(FLASHCTL) | FLCLE, FLASHCTL); - break; - case NAND_CTL_CLRCLE: - writeb(readb(FLASHCTL) & ~FLCLE, FLASHCTL); - break; - - case NAND_CTL_SETALE: - writeb(readb(FLASHCTL) | FLALE, FLASHCTL); - break; - case NAND_CTL_CLRALE: - writeb(readb(FLASHCTL) & ~FLALE, FLASHCTL); - break; - - case NAND_CTL_SETNCE: - writeb(readb(FLASHCTL) & ~(FLCE0|FLCE1), FLASHCTL); - break; - case NAND_CTL_CLRNCE: - writeb(readb(FLASHCTL) | (FLCE0|FLCE1), FLASHCTL); - break; + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned char bits = ctrl & 0x07; + + bits |= (ctrl & 0x01) << 4; + writeb((readb(FLASHCTL) & 0x17) | bits, FLASHCTL); } + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; @@ -122,31 +115,26 @@ static struct nand_bbt_descr sharpsl_akita_bbt = { .pattern = scan_ff_pattern }; -static struct nand_oobinfo akita_oobinfo = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout akita_oobinfo = { .eccbytes = 24, .eccpos = { - 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11, - 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23, - 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37}, - .oobfree = { {0x08, 0x09} } + 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11, + 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23, + 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37}, + .oobfree = {{0x08, 0x09}} }; -static int -sharpsl_nand_dev_ready(struct mtd_info* mtd) +static int sharpsl_nand_dev_ready(struct mtd_info *mtd) { return !((readb(FLASHCTL) & FLRYBY) == 0); } -static void -sharpsl_nand_enable_hwecc(struct mtd_info* mtd, int mode) +static void sharpsl_nand_enable_hwecc(struct mtd_info *mtd, int mode) { - writeb(0 ,ECCCLRR); + writeb(0, ECCCLRR); } -static int -sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat, - u_char* ecc_code) +static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, u_char * ecc_code) { ecc_code[0] = ~readb(ECCLPUB); ecc_code[1] = ~readb(ECCLPLB); @@ -154,47 +142,44 @@ sharpsl_nand_calculate_ecc(struct mtd_info* mtd, const u_char* dat, return readb(ECCCNTR) != 0; } - #ifdef CONFIG_MTD_PARTITIONS const char *part_probes[] = { "cmdlinepart", NULL }; #endif - /* * Main initialization routine */ -int __init -sharpsl_nand_init(void) +static int __init sharpsl_nand_init(void) { struct nand_chip *this; - struct mtd_partition* sharpsl_partition_info; + struct mtd_partition *sharpsl_partition_info; int err = 0; /* Allocate memory for MTD device structure and private data */ - sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), - GFP_KERNEL); + sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!sharpsl_mtd) { - printk ("Unable to allocate SharpSL NAND MTD device structure.\n"); + printk("Unable to allocate SharpSL NAND MTD device structure.\n"); return -ENOMEM; } /* map physical adress */ sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000); - if(!sharpsl_io_base){ + if (!sharpsl_io_base) { printk("ioremap to access Sharp SL NAND chip failed\n"); kfree(sharpsl_mtd); return -EIO; } /* Get pointer to private data */ - this = (struct nand_chip *) (&sharpsl_mtd[1]); + this = (struct nand_chip *)(&sharpsl_mtd[1]); /* Initialize structures */ - memset((char *) sharpsl_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(sharpsl_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ sharpsl_mtd->priv = this; + sharpsl_mtd->owner = THIS_MODULE; /* * PXA initialize @@ -205,23 +190,25 @@ sharpsl_nand_init(void) this->IO_ADDR_R = FLASHIO; this->IO_ADDR_W = FLASHIO; /* Set address of hardware control function */ - this->hwcontrol = sharpsl_nand_hwcontrol; + this->cmd_ctrl = sharpsl_nand_hwcontrol; this->dev_ready = sharpsl_nand_dev_ready; /* 15 us command delay time */ this->chip_delay = 15; /* set eccmode using hardware ECC */ - this->eccmode = NAND_ECC_HW3_256; + this->ecc.mode = NAND_ECC_HW; + this->ecc.size = 256; + this->ecc.bytes = 3; this->badblock_pattern = &sharpsl_bbt; if (machine_is_akita() || machine_is_borzoi()) { this->badblock_pattern = &sharpsl_akita_bbt; - this->autooob = &akita_oobinfo; + this->ecc.layout = &akita_oobinfo; } - this->enable_hwecc = sharpsl_nand_enable_hwecc; - this->calculate_ecc = sharpsl_nand_calculate_ecc; - this->correct_data = nand_correct_data; + this->ecc.hwctl = sharpsl_nand_enable_hwecc; + this->ecc.calculate = sharpsl_nand_calculate_ecc; + this->ecc.correct = nand_correct_data; /* Scan to find existence of the device */ - err=nand_scan(sharpsl_mtd,1); + err = nand_scan(sharpsl_mtd, 1); if (err) { iounmap(sharpsl_io_base); kfree(sharpsl_mtd); @@ -230,24 +217,23 @@ sharpsl_nand_init(void) /* Register the partitions */ sharpsl_mtd->name = "sharpsl-nand"; - nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, - &sharpsl_partition_info, 0); + nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0); if (nr_partitions <= 0) { nr_partitions = DEFAULT_NUM_PARTITIONS; sharpsl_partition_info = sharpsl_nand_default_partition_info; if (machine_is_poodle()) { - sharpsl_partition_info[1].size=30 * 1024 * 1024; + sharpsl_partition_info[1].size = 22 * 1024 * 1024; } else if (machine_is_corgi() || machine_is_shepherd()) { - sharpsl_partition_info[1].size=25 * 1024 * 1024; + sharpsl_partition_info[1].size = 25 * 1024 * 1024; } else if (machine_is_husky()) { - sharpsl_partition_info[1].size=53 * 1024 * 1024; + sharpsl_partition_info[1].size = 53 * 1024 * 1024; } else if (machine_is_spitz()) { - sharpsl_partition_info[1].size=5 * 1024 * 1024; + sharpsl_partition_info[1].size = 5 * 1024 * 1024; } else if (machine_is_akita()) { - sharpsl_partition_info[1].size=58 * 1024 * 1024; + sharpsl_partition_info[1].size = 58 * 1024 * 1024; } else if (machine_is_borzoi()) { - sharpsl_partition_info[1].size=32 * 1024 * 1024; + sharpsl_partition_info[1].size = 32 * 1024 * 1024; } } @@ -261,15 +247,15 @@ sharpsl_nand_init(void) /* Return happy */ return 0; } + module_init(sharpsl_nand_init); /* * Clean up routine */ -#ifdef MODULE static void __exit sharpsl_nand_cleanup(void) { - struct nand_chip *this = (struct nand_chip *) &sharpsl_mtd[1]; + struct nand_chip *this = (struct nand_chip *)&sharpsl_mtd[1]; /* Release resources, unregister device */ nand_release(sharpsl_mtd); @@ -279,8 +265,8 @@ static void __exit sharpsl_nand_cleanup(void) /* Free the MTD device structure */ kfree(sharpsl_mtd); } + module_exit(sharpsl_nand_cleanup); -#endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); diff --git a/drivers/mtd/nand/spia.c b/drivers/mtd/nand/spia.c index 9cf1ce718ec1..1f6d429b1583 100644 --- a/drivers/mtd/nand/spia.c +++ b/drivers/mtd/nand/spia.c @@ -39,16 +39,16 @@ static struct mtd_info *spia_mtd = NULL; */ #define SPIA_IO_BASE 0xd0000000 /* Start of EP7212 IO address space */ #define SPIA_FIO_BASE 0xf0000000 /* Address where flash is mapped */ -#define SPIA_PEDR 0x0080 /* - * IO offset to Port E data register - * where the CLE, ALE and NCE pins - * are wired to. - */ -#define SPIA_PEDDR 0x00c0 /* - * IO offset to Port E data direction - * register so we can control the IO - * lines. - */ +#define SPIA_PEDR 0x0080 /* + * IO offset to Port E data register + * where the CLE, ALE and NCE pins + * are wired to. + */ +#define SPIA_PEDDR 0x00c0 /* + * IO offset to Port E data direction + * register so we can control the IO + * lines. + */ /* * Module stuff @@ -69,79 +69,84 @@ module_param(spia_peddr, int, 0); */ static const struct mtd_partition partition_info[] = { { - .name = "SPIA flash partition 1", - .offset = 0, - .size = 2*1024*1024 - }, + .name = "SPIA flash partition 1", + .offset = 0, + .size = 2 * 1024 * 1024}, { - .name = "SPIA flash partition 2", - .offset = 2*1024*1024, - .size = 6*1024*1024 - } + .name = "SPIA flash partition 2", + .offset = 2 * 1024 * 1024, + .size = 6 * 1024 * 1024} }; -#define NUM_PARTITIONS 2 +#define NUM_PARTITIONS 2 /* * hardware specific access to control-lines -*/ -static void spia_hwcontrol(struct mtd_info *mtd, int cmd){ - - switch(cmd){ + * + * ctrl: + * NAND_CNE: bit 0 -> bit 2 + * NAND_CLE: bit 1 -> bit 0 + * NAND_ALE: bit 2 -> bit 1 + */ +static void spia_hwcontrol(struct mtd_info *mtd, int cmd) +{ + struct nand_chip *chip = mtd->priv; - case NAND_CTL_SETCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x01; break; - case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x01; break; + if (ctrl & NAND_CTRL_CHANGE) { + void __iomem *addr = spia_io_base + spia_pedr; + unsigned char bits; - case NAND_CTL_SETALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x02; break; - case NAND_CTL_CLRALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x02; break; + bits = (ctrl & NAND_CNE) << 2; + bits |= (ctrl & NAND_CLE | NAND_ALE) >> 1; + writeb((readb(addr) & ~0x7) | bits, addr); + } - case NAND_CTL_SETNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x04; break; - case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x04; break; - } + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } /* * Main initialization routine */ -int __init spia_init (void) +static int __init spia_init(void) { struct nand_chip *this; /* Allocate memory for MTD device structure and private data */ - spia_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip), - GFP_KERNEL); + spia_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!spia_mtd) { - printk ("Unable to allocate SPIA NAND MTD device structure.\n"); + printk("Unable to allocate SPIA NAND MTD device structure.\n"); return -ENOMEM; } /* Get pointer to private data */ - this = (struct nand_chip *) (&spia_mtd[1]); + this = (struct nand_chip *)(&spia_mtd[1]); /* Initialize structures */ - memset((char *) spia_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(spia_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ spia_mtd->priv = this; + spia_mtd->owner = THIS_MODULE; /* * Set GPIO Port E control register so that the pins are configured * to be outputs for controlling the NAND flash. */ - (*(volatile unsigned char *) (spia_io_base + spia_peddr)) = 0x07; + (*(volatile unsigned char *)(spia_io_base + spia_peddr)) = 0x07; /* Set address of NAND IO lines */ - this->IO_ADDR_R = (void __iomem *) spia_fio_base; - this->IO_ADDR_W = (void __iomem *) spia_fio_base; + this->IO_ADDR_R = (void __iomem *)spia_fio_base; + this->IO_ADDR_W = (void __iomem *)spia_fio_base; /* Set address of hardware control function */ - this->hwcontrol = spia_hwcontrol; + this->cmd_ctrl = spia_hwcontrol; /* 15 us command delay time */ this->chip_delay = 15; /* Scan to find existence of the device */ - if (nand_scan (spia_mtd, 1)) { - kfree (spia_mtd); + if (nand_scan(spia_mtd, 1)) { + kfree(spia_mtd); return -ENXIO; } @@ -151,22 +156,22 @@ int __init spia_init (void) /* Return happy */ return 0; } + module_init(spia_init); /* * Clean up routine */ -#ifdef MODULE -static void __exit spia_cleanup (void) +static void __exit spia_cleanup(void) { /* Release resources, unregister device */ - nand_release (spia_mtd); + nand_release(spia_mtd); /* Free the MTD device structure */ - kfree (spia_mtd); + kfree(spia_mtd); } + module_exit(spia_cleanup); -#endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com"); diff --git a/drivers/mtd/nand/toto.c b/drivers/mtd/nand/toto.c index 7609c43cb3ec..f9e2d4a0ab8c 100644 --- a/drivers/mtd/nand/toto.c +++ b/drivers/mtd/nand/toto.c @@ -32,6 +32,8 @@ #include <asm/arch-omap1510/hardware.h> #include <asm/arch/gpio.h> +#define CONFIG_NAND_WORKAROUND 1 + /* * MTD structure for TOTO board */ @@ -39,25 +41,6 @@ static struct mtd_info *toto_mtd = NULL; static unsigned long toto_io_base = OMAP_FLASH_1_BASE; -#define CONFIG_NAND_WORKAROUND 1 - -#define NAND_NCE 0x4000 -#define NAND_CLE 0x1000 -#define NAND_ALE 0x0002 -#define NAND_MASK (NAND_CLE | NAND_ALE | NAND_NCE) - -#define T_NAND_CTL_CLRALE(iob) gpiosetout(NAND_ALE, 0) -#define T_NAND_CTL_SETALE(iob) gpiosetout(NAND_ALE, NAND_ALE) -#ifdef CONFIG_NAND_WORKAROUND /* "some" dev boards busted, blue wired to rts2 :( */ -#define T_NAND_CTL_CLRCLE(iob) gpiosetout(NAND_CLE, 0); rts2setout(2, 2) -#define T_NAND_CTL_SETCLE(iob) gpiosetout(NAND_CLE, NAND_CLE); rts2setout(2, 0) -#else -#define T_NAND_CTL_CLRCLE(iob) gpiosetout(NAND_CLE, 0) -#define T_NAND_CTL_SETCLE(iob) gpiosetout(NAND_CLE, NAND_CLE) -#endif -#define T_NAND_CTL_SETNCE(iob) gpiosetout(NAND_NCE, 0) -#define T_NAND_CTL_CLRNCE(iob) gpiosetout(NAND_NCE, NAND_NCE) - /* * Define partitions for flash devices */ @@ -91,91 +74,110 @@ static struct mtd_partition partition_info32M[] = { #define NUM_PARTITIONS32M 3 #define NUM_PARTITIONS64M 4 + /* * hardware specific access to control-lines -*/ - -static void toto_hwcontrol(struct mtd_info *mtd, int cmd) + * + * ctrl: + * NAND_NCE: bit 0 -> bit 14 (0x4000) + * NAND_CLE: bit 1 -> bit 12 (0x1000) + * NAND_ALE: bit 2 -> bit 1 (0x0002) + */ +static void toto_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned long bits; - udelay(1); /* hopefully enough time for tc make proceding write to clear */ - switch(cmd){ + /* hopefully enough time for tc make proceding write to clear */ + udelay(1); - case NAND_CTL_SETCLE: T_NAND_CTL_SETCLE(cmd); break; - case NAND_CTL_CLRCLE: T_NAND_CTL_CLRCLE(cmd); break; + bits = (~ctrl & NAND_NCE) << 14; + bits |= (ctrl & NAND_CLE) << 12; + bits |= (ctrl & NAND_ALE) >> 1; - case NAND_CTL_SETALE: T_NAND_CTL_SETALE(cmd); break; - case NAND_CTL_CLRALE: T_NAND_CTL_CLRALE(cmd); break; +#warning Wild guess as gpiosetout() is nowhere defined in the kernel source - tglx + gpiosetout(0x5002, bits); - case NAND_CTL_SETNCE: T_NAND_CTL_SETNCE(cmd); break; - case NAND_CTL_CLRNCE: T_NAND_CTL_CLRNCE(cmd); break; +#ifdef CONFIG_NAND_WORKAROUND + /* "some" dev boards busted, blue wired to rts2 :( */ + rts2setout(2, (ctrl & NAND_CLE) << 1); +#endif + /* allow time to ensure gpio state to over take memory write */ + udelay(1); } - udelay(1); /* allow time to ensure gpio state to over take memory write */ + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); } /* * Main initialization routine */ -int __init toto_init (void) +static int __init toto_init(void) { struct nand_chip *this; int err = 0; /* Allocate memory for MTD device structure and private data */ - toto_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip), - GFP_KERNEL); + toto_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!toto_mtd) { - printk (KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n"); + printk(KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n"); err = -ENOMEM; goto out; } /* Get pointer to private data */ - this = (struct nand_chip *) (&toto_mtd[1]); + this = (struct nand_chip *)(&toto_mtd[1]); /* Initialize structures */ - memset((char *) toto_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(toto_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); /* Link the private data with the MTD structure */ toto_mtd->priv = this; + toto_mtd->owner = THIS_MODULE; /* Set address of NAND IO lines */ this->IO_ADDR_R = toto_io_base; this->IO_ADDR_W = toto_io_base; - this->hwcontrol = toto_hwcontrol; + this->cmd_ctrl = toto_hwcontrol; this->dev_ready = NULL; /* 25 us command delay time */ this->chip_delay = 30; - this->eccmode = NAND_ECC_SOFT; + this->ecc.mode = NAND_ECC_SOFT; - /* Scan to find existance of the device */ - if (nand_scan (toto_mtd, 1)) { + /* Scan to find existance of the device */ + if (nand_scan(toto_mtd, 1)) { err = -ENXIO; goto out_mtd; } /* Register the partitions */ - switch(toto_mtd->size){ - case SZ_64M: add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); break; - case SZ_32M: add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); break; - default: { - printk (KERN_WARNING "Unsupported Nand device\n"); + switch (toto_mtd->size) { + case SZ_64M: + add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); + break; + case SZ_32M: + add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); + break; + default:{ + printk(KERN_WARNING "Unsupported Nand device\n"); err = -ENXIO; goto out_buf; } } - gpioreserve(NAND_MASK); /* claim our gpios */ - archflashwp(0,0); /* open up flash for writing */ + gpioreserve(NAND_MASK); /* claim our gpios */ + archflashwp(0, 0); /* open up flash for writing */ goto out; -out_buf: - kfree (this->data_buf); -out_mtd: - kfree (toto_mtd); -out: + out_mtd: + kfree(toto_mtd); + out: return err; } @@ -184,20 +186,21 @@ module_init(toto_init); /* * Clean up routine */ -static void __exit toto_cleanup (void) +static void __exit toto_cleanup(void) { /* Release resources, unregister device */ - nand_release (toto_mtd); + nand_release(toto_mtd); /* Free the MTD device structure */ - kfree (toto_mtd); + kfree(toto_mtd); /* stop flash writes */ - archflashwp(0,1); + archflashwp(0, 1); /* release gpios to system */ - gpiorelease(NAND_MASK); + gpiorelease(NAND_MASK); } + module_exit(toto_cleanup); MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/ts7250.c b/drivers/mtd/nand/ts7250.c new file mode 100644 index 000000000000..a0b4b1edcb0d --- /dev/null +++ b/drivers/mtd/nand/ts7250.c @@ -0,0 +1,206 @@ +/* + * drivers/mtd/nand/ts7250.c + * + * Copyright (C) 2004 Technologic Systems (support@embeddedARM.com) + * + * Derived from drivers/mtd/nand/edb7312.c + * Copyright (C) 2004 Marius Gröger (mag@sysgo.de) + * + * Derived from drivers/mtd/nand/autcpu12.c + * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) + * + * $Id: ts7250.c,v 1.4 2004/12/30 22:02:07 joff Exp $ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Overview: + * This is a device driver for the NAND flash device found on the + * TS-7250 board which utilizes a Samsung 32 Mbyte part. + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/sizes.h> +#include <asm/mach-types.h> + +/* + * MTD structure for TS7250 board + */ +static struct mtd_info *ts7250_mtd = NULL; + +#ifdef CONFIG_MTD_PARTITIONS +static const char *part_probes[] = { "cmdlinepart", NULL }; + +#define NUM_PARTITIONS 3 + +/* + * Define static partitions for flash device + */ +static struct mtd_partition partition_info32[] = { + { + .name = "TS-BOOTROM", + .offset = 0x00000000, + .size = 0x00004000, + }, { + .name = "Linux", + .offset = 0x00004000, + .size = 0x01d00000, + }, { + .name = "RedBoot", + .offset = 0x01d04000, + .size = 0x002fc000, + }, +}; + +/* + * Define static partitions for flash device + */ +static struct mtd_partition partition_info128[] = { + { + .name = "TS-BOOTROM", + .offset = 0x00000000, + .size = 0x00004000, + }, { + .name = "Linux", + .offset = 0x00004000, + .size = 0x07d00000, + }, { + .name = "RedBoot", + .offset = 0x07d04000, + .size = 0x002fc000, + }, +}; +#endif + + +/* + * hardware specific access to control-lines + * + * ctrl: + * NAND_NCE: bit 0 -> bit 2 + * NAND_CLE: bit 1 -> bit 1 + * NAND_ALE: bit 2 -> bit 0 + */ +static void ts7250_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *chip = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned long addr = TS72XX_NAND_CONTROL_VIRT_BASE; + unsigned char bits; + + bits = (ctrl & NAND_CNE) << 2; + bits |= ctrl & NAND_CLE; + bits |= (ctrl & NAND_ALE) >> 2; + + __raw_writeb((__raw_readb(addr) & ~0x7) | bits, addr); + } + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); +} + +/* + * read device ready pin + */ +static int ts7250_device_ready(struct mtd_info *mtd) +{ + return __raw_readb(TS72XX_NAND_BUSY_VIRT_BASE) & 0x20; +} + +/* + * Main initialization routine + */ +static int __init ts7250_init(void) +{ + struct nand_chip *this; + const char *part_type = 0; + int mtd_parts_nb = 0; + struct mtd_partition *mtd_parts = 0; + + if (!machine_is_ts72xx() || board_is_ts7200()) + return -ENXIO; + + /* Allocate memory for MTD device structure and private data */ + ts7250_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); + if (!ts7250_mtd) { + printk("Unable to allocate TS7250 NAND MTD device structure.\n"); + return -ENOMEM; + } + + /* Get pointer to private data */ + this = (struct nand_chip *)(&ts7250_mtd[1]); + + /* Initialize structures */ + memset(ts7250_mtd, 0, sizeof(struct mtd_info)); + memset(this, 0, sizeof(struct nand_chip)); + + /* Link the private data with the MTD structure */ + ts7250_mtd->priv = this; + ts7250_mtd->owner = THIS_MODULE; + + /* insert callbacks */ + this->IO_ADDR_R = (void *)TS72XX_NAND_DATA_VIRT_BASE; + this->IO_ADDR_W = (void *)TS72XX_NAND_DATA_VIRT_BASE; + this->cmd_ctrl = ts7250_hwcontrol; + this->dev_ready = ts7250_device_ready; + this->chip_delay = 15; + this->ecc.mode = NAND_ECC_SOFT; + + printk("Searching for NAND flash...\n"); + /* Scan to find existence of the device */ + if (nand_scan(ts7250_mtd, 1)) { + kfree(ts7250_mtd); + return -ENXIO; + } +#ifdef CONFIG_MTD_PARTITIONS + ts7250_mtd->name = "ts7250-nand"; + mtd_parts_nb = parse_mtd_partitions(ts7250_mtd, part_probes, &mtd_parts, 0); + if (mtd_parts_nb > 0) + part_type = "command line"; + else + mtd_parts_nb = 0; +#endif + if (mtd_parts_nb == 0) { + mtd_parts = partition_info32; + if (ts7250_mtd->size >= (128 * 0x100000)) + mtd_parts = partition_info128; + mtd_parts_nb = NUM_PARTITIONS; + part_type = "static"; + } + + /* Register the partitions */ + printk(KERN_NOTICE "Using %s partition definition\n", part_type); + add_mtd_partitions(ts7250_mtd, mtd_parts, mtd_parts_nb); + + /* Return happy */ + return 0; +} + +module_init(ts7250_init); + +/* + * Clean up routine + */ +static void __exit ts7250_cleanup(void) +{ + /* Unregister the device */ + del_mtd_device(ts7250_mtd); + + /* Free the MTD device structure */ + kfree(ts7250_mtd); +} + +module_exit(ts7250_cleanup); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jesse Off <joff@embeddedARM.com>"); +MODULE_DESCRIPTION("MTD map driver for Technologic Systems TS-7250 board"); diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index d7cd5fa16ba4..dc7573501d8c 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -70,8 +70,6 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) nftl->mbd.devnum = -1; nftl->mbd.blksize = 512; nftl->mbd.tr = tr; - memcpy(&nftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo)); - nftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY; if (NFTL_mount(nftl) < 0) { printk(KERN_WARNING "NFTL: could not mount device\n"); @@ -136,6 +134,69 @@ static void nftl_remove_dev(struct mtd_blktrans_dev *dev) kfree(nftl); } +/* + * Read oob data from flash + */ +int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs & (mtd->writesize - 1); + ops.ooblen = len; + ops.oobbuf = buf; + ops.datbuf = NULL; + ops.len = len; + + res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + +/* + * Write oob data to flash + */ +int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs & (mtd->writesize - 1); + ops.ooblen = len; + ops.oobbuf = buf; + ops.datbuf = NULL; + ops.len = len; + + res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + +/* + * Write data and oob to flash + */ +static int nftl_write(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf, uint8_t *oob) +{ + struct mtd_oob_ops ops; + int res; + + ops.mode = MTD_OOB_PLACE; + ops.ooboffs = offs; + ops.ooblen = mtd->oobsize; + ops.oobbuf = oob; + ops.datbuf = buf; + ops.len = len; + + res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops); + *retlen = ops.retlen; + return res; +} + #ifdef CONFIG_NFTL_RW /* Actual NFTL access routines */ @@ -185,6 +246,7 @@ static u16 NFTL_findfreeblock(struct NFTLrecord *nftl, int desperate ) static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned pendingblock ) { + struct mtd_info *mtd = nftl->mbd.mtd; u16 BlockMap[MAX_SECTORS_PER_UNIT]; unsigned char BlockLastState[MAX_SECTORS_PER_UNIT]; unsigned char BlockFreeFound[MAX_SECTORS_PER_UNIT]; @@ -194,7 +256,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p unsigned int targetEUN; struct nftl_oob oob; int inplace = 1; - size_t retlen; + size_t retlen; memset(BlockMap, 0xff, sizeof(BlockMap)); memset(BlockFreeFound, 0, sizeof(BlockFreeFound)); @@ -210,21 +272,21 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p /* Scan to find the Erase Unit which holds the actual data for each 512-byte block within the Chain. */ - silly = MAX_LOOPS; + silly = MAX_LOOPS; targetEUN = BLOCK_NIL; while (thisEUN <= nftl->lastEUN ) { - unsigned int status, foldmark; + unsigned int status, foldmark; targetEUN = thisEUN; for (block = 0; block < nftl->EraseSize / 512; block ++) { - MTD_READOOB(nftl->mbd.mtd, - (thisEUN * nftl->EraseSize) + (block * 512), - 16 , &retlen, (char *)&oob); + nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) + + (block * 512), 16 , &retlen, + (char *)&oob); if (block == 2) { - foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1; - if (foldmark == FOLD_MARK_IN_PROGRESS) { - DEBUG(MTD_DEBUG_LEVEL1, - "Write Inhibited on EUN %d\n", thisEUN); + foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1; + if (foldmark == FOLD_MARK_IN_PROGRESS) { + DEBUG(MTD_DEBUG_LEVEL1, + "Write Inhibited on EUN %d\n", thisEUN); inplace = 0; } else { /* There's no other reason not to do inplace, @@ -233,7 +295,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p inplace = 1; } } - status = oob.b.Status | oob.b.Status1; + status = oob.b.Status | oob.b.Status1; BlockLastState[block] = status; switch(status) { @@ -328,15 +390,15 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p return BLOCK_NIL; } } else { - /* We put a fold mark in the chain we are folding only if - we fold in place to help the mount check code. If we do - not fold in place, it is possible to find the valid - chain by selecting the longer one */ - oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS); - oob.u.c.unused = 0xffffffff; - MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8, - 8, &retlen, (char *)&oob.u); - } + /* We put a fold mark in the chain we are folding only if we + fold in place to help the mount check code. If we do not fold in + place, it is possible to find the valid chain by selecting the + longer one */ + oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS); + oob.u.c.unused = 0xffffffff; + nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8, + 8, &retlen, (char *)&oob.u); + } /* OK. We now know the location of every block in the Virtual Unit Chain, and the Erase Unit into which we are supposed to be copying. @@ -353,33 +415,33 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p continue; } - /* copy only in non free block (free blocks can only + /* copy only in non free block (free blocks can only happen in case of media errors or deleted blocks) */ - if (BlockMap[block] == BLOCK_NIL) - continue; - - ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), - 512, &retlen, movebuf); - if (ret < 0) { - ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) - + (block * 512), 512, &retlen, - movebuf); - if (ret != -EIO) - printk("Error went away on retry.\n"); - } + if (BlockMap[block] == BLOCK_NIL) + continue; + + ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), + 512, &retlen, movebuf); + if (ret < 0 && ret != -EUCLEAN) { + ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + + (block * 512), 512, &retlen, + movebuf); + if (ret != -EIO) + printk("Error went away on retry.\n"); + } memset(&oob, 0xff, sizeof(struct nftl_oob)); oob.b.Status = oob.b.Status1 = SECTOR_USED; - MTD_WRITEECC(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + (block * 512), - 512, &retlen, movebuf, (char *)&oob, &nftl->oobinfo); + + nftl_write(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + + (block * 512), 512, &retlen, movebuf, (char *)&oob); } - /* add the header so that it is now a valid chain */ - oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum - = cpu_to_le16(thisVUC); - oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff; + /* add the header so that it is now a valid chain */ + oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC); + oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff; - MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 8, - 8, &retlen, (char *)&oob.u); + nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 8, + 8, &retlen, (char *)&oob.u); /* OK. We've moved the whole lot into the new block. Now we have to free the original blocks. */ @@ -396,18 +458,18 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p while (thisEUN <= nftl->lastEUN && thisEUN != targetEUN) { unsigned int EUNtmp; - EUNtmp = nftl->ReplUnitTable[thisEUN]; + EUNtmp = nftl->ReplUnitTable[thisEUN]; - if (NFTL_formatblock(nftl, thisEUN) < 0) { + if (NFTL_formatblock(nftl, thisEUN) < 0) { /* could not erase : mark block as reserved */ nftl->ReplUnitTable[thisEUN] = BLOCK_RESERVED; - } else { + } else { /* correctly erased : mark it as free */ nftl->ReplUnitTable[thisEUN] = BLOCK_FREE; nftl->numfreeEUNs++; - } - thisEUN = EUNtmp; + } + thisEUN = EUNtmp; } /* Make this the new start of chain for thisVUC */ @@ -473,6 +535,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) { u16 lastEUN; u16 thisVUC = block / (nftl->EraseSize / 512); + struct mtd_info *mtd = nftl->mbd.mtd; unsigned int writeEUN; unsigned long blockofs = (block * 512) & (nftl->EraseSize -1); size_t retlen; @@ -489,21 +552,22 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) */ lastEUN = BLOCK_NIL; writeEUN = nftl->EUNtable[thisVUC]; - silly = MAX_LOOPS; + silly = MAX_LOOPS; while (writeEUN <= nftl->lastEUN) { struct nftl_bci bci; size_t retlen; - unsigned int status; + unsigned int status; lastEUN = writeEUN; - MTD_READOOB(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs, - 8, &retlen, (char *)&bci); + nftl_read_oob(mtd, + (writeEUN * nftl->EraseSize) + blockofs, + 8, &retlen, (char *)&bci); DEBUG(MTD_DEBUG_LEVEL2, "Status of block %d in EUN %d is %x\n", block , writeEUN, le16_to_cpu(bci.Status)); - status = bci.Status | bci.Status1; + status = bci.Status | bci.Status1; switch(status) { case SECTOR_FREE: return writeEUN; @@ -574,10 +638,10 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) /* We've found a free block. Insert it into the chain. */ if (lastEUN != BLOCK_NIL) { - thisVUC |= 0x8000; /* It's a replacement block */ + thisVUC |= 0x8000; /* It's a replacement block */ } else { - /* The first block in a new chain */ - nftl->EUNtable[thisVUC] = writeEUN; + /* The first block in a new chain */ + nftl->EUNtable[thisVUC] = writeEUN; } /* set up the actual EUN we're writing into */ @@ -585,29 +649,29 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) nftl->ReplUnitTable[writeEUN] = BLOCK_NIL; /* ... and on the flash itself */ - MTD_READOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8, - &retlen, (char *)&oob.u); + nftl_read_oob(mtd, writeEUN * nftl->EraseSize + 8, 8, + &retlen, (char *)&oob.u); oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC); - MTD_WRITEOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8, - &retlen, (char *)&oob.u); + nftl_write_oob(mtd, writeEUN * nftl->EraseSize + 8, 8, + &retlen, (char *)&oob.u); - /* we link the new block to the chain only after the + /* we link the new block to the chain only after the block is ready. It avoids the case where the chain could point to a free block */ - if (lastEUN != BLOCK_NIL) { + if (lastEUN != BLOCK_NIL) { /* Both in our cache... */ nftl->ReplUnitTable[lastEUN] = writeEUN; /* ... and on the flash itself */ - MTD_READOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8, - 8, &retlen, (char *)&oob.u); + nftl_read_oob(mtd, (lastEUN * nftl->EraseSize) + 8, + 8, &retlen, (char *)&oob.u); oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = cpu_to_le16(writeEUN); - MTD_WRITEOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8, - 8, &retlen, (char *)&oob.u); + nftl_write_oob(mtd, (lastEUN * nftl->EraseSize) + 8, + 8, &retlen, (char *)&oob.u); } return writeEUN; @@ -639,10 +703,9 @@ static int nftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block, memset(&oob, 0xff, sizeof(struct nftl_oob)); oob.b.Status = oob.b.Status1 = SECTOR_USED; - MTD_WRITEECC(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs, - 512, &retlen, (char *)buffer, (char *)&oob, &nftl->oobinfo); - /* need to write SECTOR_USED flags since they are not written in mtd_writeecc */ + nftl_write(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs, + 512, &retlen, (char *)buffer, (char *)&oob); return 0; } #endif /* CONFIG_NFTL_RW */ @@ -651,20 +714,22 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, char *buffer) { struct NFTLrecord *nftl = (void *)mbd; + struct mtd_info *mtd = nftl->mbd.mtd; u16 lastgoodEUN; u16 thisEUN = nftl->EUNtable[block / (nftl->EraseSize / 512)]; unsigned long blockofs = (block * 512) & (nftl->EraseSize - 1); - unsigned int status; + unsigned int status; int silly = MAX_LOOPS; - size_t retlen; - struct nftl_bci bci; + size_t retlen; + struct nftl_bci bci; lastgoodEUN = BLOCK_NIL; - if (thisEUN != BLOCK_NIL) { + if (thisEUN != BLOCK_NIL) { while (thisEUN < nftl->nb_blocks) { - if (MTD_READOOB(nftl->mbd.mtd, (thisEUN * nftl->EraseSize) + blockofs, - 8, &retlen, (char *)&bci) < 0) + if (nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) + + blockofs, 8, &retlen, + (char *)&bci) < 0) status = SECTOR_IGNORE; else status = bci.Status | bci.Status1; @@ -694,7 +759,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, } thisEUN = nftl->ReplUnitTable[thisEUN]; } - } + } the_end: if (lastgoodEUN == BLOCK_NIL) { @@ -703,7 +768,9 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, } else { loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs; size_t retlen; - if (MTD_READ(nftl->mbd.mtd, ptr, 512, &retlen, buffer)) + int res = mtd->read(mtd, ptr, 512, &retlen, buffer); + + if (res < 0 && res != -EUCLEAN) return -EIO; } return 0; diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index 3b104ebb219a..067262ee8df0 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -33,6 +33,11 @@ char nftlmountrev[]="$Revision: 1.41 $"; +extern int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf); +extern int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, + size_t *retlen, uint8_t *buf); + /* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the * various device information of the NFTL partition and Bad Unit Table. Update * the ReplUnitTable[] table accroding to the Bad Unit Table. ReplUnitTable[] @@ -45,6 +50,7 @@ static int find_boot_record(struct NFTLrecord *nftl) size_t retlen; u8 buf[SECTORSIZE]; struct NFTLMediaHeader *mh = &nftl->MediaHdr; + struct mtd_info *mtd = nftl->mbd.mtd; unsigned int i; /* Assume logical EraseSize == physical erasesize for starting the scan. @@ -65,7 +71,8 @@ static int find_boot_record(struct NFTLrecord *nftl) /* Check for ANAND header first. Then can whinge if it's found but later checks fail */ - ret = MTD_READ(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE, &retlen, buf); + ret = mtd->read(mtd, block * nftl->EraseSize, SECTORSIZE, + &retlen, buf); /* We ignore ret in case the ECC of the MediaHeader is invalid (which is apparently acceptable) */ if (retlen != SECTORSIZE) { @@ -90,8 +97,9 @@ static int find_boot_record(struct NFTLrecord *nftl) } /* To be safer with BIOS, also use erase mark as discriminant */ - if ((ret = MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, - 8, &retlen, (char *)&h1) < 0)) { + if ((ret = nftl_read_oob(mtd, block * nftl->EraseSize + + SECTORSIZE + 8, 8, &retlen, + (char *)&h1) < 0)) { printk(KERN_WARNING "ANAND header found at 0x%x in mtd%d, but OOB data read failed (err %d)\n", block * nftl->EraseSize, nftl->mbd.mtd->index, ret); continue; @@ -109,8 +117,8 @@ static int find_boot_record(struct NFTLrecord *nftl) } /* Finally reread to check ECC */ - if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE, - &retlen, buf, (char *)&oob, NULL) < 0)) { + if ((ret = mtd->read(mtd, block * nftl->EraseSize, SECTORSIZE, + &retlen, buf) < 0)) { printk(KERN_NOTICE "ANAND header found at 0x%x in mtd%d, but ECC read failed (err %d)\n", block * nftl->EraseSize, nftl->mbd.mtd->index, ret); continue; @@ -228,9 +236,9 @@ device is already correct. The new DiskOnChip driver already scanned the bad block table. Just query it. if ((i & (SECTORSIZE - 1)) == 0) { /* read one sector for every SECTORSIZE of blocks */ - if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize + - i + SECTORSIZE, SECTORSIZE, &retlen, buf, - (char *)&oob, NULL)) < 0) { + if ((ret = mtd->read(nftl->mbd.mtd, block * nftl->EraseSize + + i + SECTORSIZE, SECTORSIZE, &retlen, + buf)) < 0) { printk(KERN_NOTICE "Read of bad sector table failed (err %d)\n", ret); kfree(nftl->ReplUnitTable); @@ -268,18 +276,22 @@ static int memcmpb(void *a, int c, int n) static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int len, int check_oob) { - int i; - size_t retlen; u8 buf[SECTORSIZE + nftl->mbd.mtd->oobsize]; + struct mtd_info *mtd = nftl->mbd.mtd; + size_t retlen; + int i; for (i = 0; i < len; i += SECTORSIZE) { - if (MTD_READECC(nftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &nftl->oobinfo) < 0) + if (mtd->read(mtd, address, SECTORSIZE, &retlen, buf)) return -1; if (memcmpb(buf, 0xff, SECTORSIZE) != 0) return -1; if (check_oob) { - if (memcmpb(buf + SECTORSIZE, 0xff, nftl->mbd.mtd->oobsize) != 0) + if(nftl_read_oob(mtd, address, mtd->oobsize, + &retlen, &buf[SECTORSIZE]) < 0) + return -1; + if (memcmpb(buf + SECTORSIZE, 0xff, mtd->oobsize) != 0) return -1; } address += SECTORSIZE; @@ -301,10 +313,11 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) unsigned int nb_erases, erase_mark; struct nftl_uci1 uci; struct erase_info *instr = &nftl->instr; + struct mtd_info *mtd = nftl->mbd.mtd; /* Read the Unit Control Information #1 for Wear-Leveling */ - if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, - 8, &retlen, (char *)&uci) < 0) + if (nftl_read_oob(mtd, block * nftl->EraseSize + SECTORSIZE + 8, + 8, &retlen, (char *)&uci) < 0) goto default_uci1; erase_mark = le16_to_cpu ((uci.EraseMark | uci.EraseMark1)); @@ -321,7 +334,7 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) instr->mtd = nftl->mbd.mtd; instr->addr = block * nftl->EraseSize; instr->len = nftl->EraseSize; - MTD_ERASE(nftl->mbd.mtd, instr); + mtd->erase(mtd, instr); if (instr->state == MTD_ERASE_FAILED) { printk("Error while formatting block %d\n", block); @@ -343,8 +356,8 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) goto fail; uci.WearInfo = le32_to_cpu(nb_erases); - if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8, - &retlen, (char *)&uci) < 0) + if (nftl_write_oob(mtd, block * nftl->EraseSize + SECTORSIZE + + 8, 8, &retlen, (char *)&uci) < 0) goto fail; return 0; fail: @@ -365,6 +378,7 @@ fail: * case. */ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_block) { + struct mtd_info *mtd = nftl->mbd.mtd; unsigned int block, i, status; struct nftl_bci bci; int sectors_per_block; @@ -374,8 +388,9 @@ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_b block = first_block; for (;;) { for (i = 0; i < sectors_per_block; i++) { - if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + i * SECTORSIZE, - 8, &retlen, (char *)&bci) < 0) + if (nftl_read_oob(mtd, + block * nftl->EraseSize + i * SECTORSIZE, + 8, &retlen, (char *)&bci) < 0) status = SECTOR_IGNORE; else status = bci.Status | bci.Status1; @@ -394,9 +409,10 @@ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_b /* sector not free actually : mark it as SECTOR_IGNORE */ bci.Status = SECTOR_IGNORE; bci.Status1 = SECTOR_IGNORE; - MTD_WRITEOOB(nftl->mbd.mtd, - block * nftl->EraseSize + i * SECTORSIZE, - 8, &retlen, (char *)&bci); + nftl_write_oob(mtd, block * + nftl->EraseSize + + i * SECTORSIZE, 8, + &retlen, (char *)&bci); } break; default: @@ -481,13 +497,14 @@ static void format_chain(struct NFTLrecord *nftl, unsigned int first_block) * 1. */ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) { + struct mtd_info *mtd = nftl->mbd.mtd; struct nftl_uci1 h1; unsigned int erase_mark; size_t retlen; /* check erase mark. */ - if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8, - &retlen, (char *)&h1) < 0) + if (nftl_read_oob(mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8, + &retlen, (char *)&h1) < 0) return -1; erase_mark = le16_to_cpu ((h1.EraseMark | h1.EraseMark1)); @@ -501,8 +518,9 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) h1.EraseMark = cpu_to_le16(ERASE_MARK); h1.EraseMark1 = cpu_to_le16(ERASE_MARK); h1.WearInfo = cpu_to_le32(0); - if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8, - &retlen, (char *)&h1) < 0) + if (nftl_write_oob(mtd, + block * nftl->EraseSize + SECTORSIZE + 8, 8, + &retlen, (char *)&h1) < 0) return -1; } else { #if 0 @@ -513,8 +531,8 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) SECTORSIZE, 0) != 0) return -1; - if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + i, - 16, &retlen, buf) < 0) + if (nftl_read_oob(mtd, block * nftl->EraseSize + i, + 16, &retlen, buf) < 0) return -1; if (i == SECTORSIZE) { /* skip erase mark */ @@ -540,11 +558,12 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) */ static int get_fold_mark(struct NFTLrecord *nftl, unsigned int block) { + struct mtd_info *mtd = nftl->mbd.mtd; struct nftl_uci2 uci; size_t retlen; - if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + 2 * SECTORSIZE + 8, - 8, &retlen, (char *)&uci) < 0) + if (nftl_read_oob(mtd, block * nftl->EraseSize + 2 * SECTORSIZE + 8, + 8, &retlen, (char *)&uci) < 0) return 0; return le16_to_cpu((uci.FoldMark | uci.FoldMark1)); @@ -558,6 +577,7 @@ int NFTL_mount(struct NFTLrecord *s) int chain_length, do_format_chain; struct nftl_uci0 h0; struct nftl_uci1 h1; + struct mtd_info *mtd = s->mbd.mtd; size_t retlen; /* search for NFTL MediaHeader and Spare NFTL Media Header */ @@ -582,10 +602,13 @@ int NFTL_mount(struct NFTLrecord *s) for (;;) { /* read the block header. If error, we format the chain */ - if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8, 8, - &retlen, (char *)&h0) < 0 || - MTD_READOOB(s->mbd.mtd, block * s->EraseSize + SECTORSIZE + 8, 8, - &retlen, (char *)&h1) < 0) { + if (nftl_read_oob(mtd, + block * s->EraseSize + 8, 8, + &retlen, (char *)&h0) < 0 || + nftl_read_oob(mtd, + block * s->EraseSize + + SECTORSIZE + 8, 8, + &retlen, (char *)&h1) < 0) { s->ReplUnitTable[block] = BLOCK_NIL; do_format_chain = 1; break; diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig index 126ff6bf63d5..5930a03736d7 100644 --- a/drivers/mtd/onenand/Kconfig +++ b/drivers/mtd/onenand/Kconfig @@ -29,6 +29,20 @@ config MTD_ONENAND_GENERIC help Support for OneNAND flash via platform device driver. +config MTD_ONENAND_OTP + bool "OneNAND OTP Support" + depends on MTD_ONENAND + help + One Block of the NAND Flash Array memory is reserved as + a One-Time Programmable Block memory area. + Also, 1st Block of NAND Flash Array can be used as OTP. + + The OTP block can be read, programmed and locked using the same + operations as any other NAND Flash Array memory block. + OTP block cannot be erased. + + OTP block is fully-guaranteed to be a valid block. + config MTD_ONENAND_SYNC_READ bool "OneNAND Sync. Burst Read Support" depends on ARCH_OMAP diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index a53a73fc2a5a..84ec40d25438 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -23,8 +23,7 @@ /** * onenand_oob_64 - oob info for large (2KB) page */ -static struct nand_oobinfo onenand_oob_64 = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout onenand_oob_64 = { .eccbytes = 20, .eccpos = { 8, 9, 10, 11, 12, @@ -34,14 +33,14 @@ static struct nand_oobinfo onenand_oob_64 = { }, .oobfree = { {2, 3}, {14, 2}, {18, 3}, {30, 2}, - {24, 3}, {46, 2}, {40, 3}, {62, 2} } + {34, 3}, {46, 2}, {50, 3}, {62, 2} + } }; /** * onenand_oob_32 - oob info for middle (1KB) page */ -static struct nand_oobinfo onenand_oob_32 = { - .useecc = MTD_NANDECC_AUTOPLACE, +static struct nand_ecclayout onenand_oob_32 = { .eccbytes = 10, .eccpos = { 8, 9, 10, 11, 12, @@ -190,7 +189,7 @@ static int onenand_buffer_address(int dataram1, int sectors, int count) static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len) { struct onenand_chip *this = mtd->priv; - int value, readcmd = 0; + int value, readcmd = 0, block_cmd = 0; int block, page; /* Now we use page size operation */ int sectors = 4, count = 4; @@ -206,6 +205,8 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le case ONENAND_CMD_ERASE: case ONENAND_CMD_BUFFERRAM: + case ONENAND_CMD_OTP_ACCESS: + block_cmd = 1; block = (int) (addr >> this->erase_shift); page = -1; break; @@ -233,6 +234,12 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le /* Write 'DFS, FBA' of Flash */ value = onenand_block_address(this, block); this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); + + if (block_cmd) { + /* Select DataRAM for DDP */ + value = onenand_bufferram_address(this, block); + this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); + } } if (page != -1) { @@ -301,6 +308,7 @@ static int onenand_wait(struct mtd_info *mtd, int state) if (state != FL_READING) cond_resched(); + touch_softlockup_watchdog(); } /* To get correct interrupt status in timeout case */ interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); @@ -344,7 +352,7 @@ static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area) if (ONENAND_CURRENT_BUFFERRAM(this)) { if (area == ONENAND_DATARAM) - return mtd->oobblock; + return mtd->writesize; if (area == ONENAND_SPARERAM) return mtd->oobsize; } @@ -372,6 +380,17 @@ static int onenand_read_bufferram(struct mtd_info *mtd, int area, bufferram += onenand_bufferram_offset(mtd, area); + if (ONENAND_CHECK_BYTE_ACCESS(count)) { + unsigned short word; + + /* Align with word(16-bit) size */ + count--; + + /* Read word and save byte */ + word = this->read_word(bufferram + offset + count); + buffer[count] = (word & 0xff); + } + memcpy(buffer, bufferram + offset, count); return 0; @@ -399,6 +418,17 @@ static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area, this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ); + if (ONENAND_CHECK_BYTE_ACCESS(count)) { + unsigned short word; + + /* Align with word(16-bit) size */ + count--; + + /* Read word and save byte */ + word = this->read_word(bufferram + offset + count); + buffer[count] = (word & 0xff); + } + memcpy(buffer, bufferram + offset, count); this->mmcontrol(mtd, 0); @@ -426,6 +456,22 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area, bufferram += onenand_bufferram_offset(mtd, area); + if (ONENAND_CHECK_BYTE_ACCESS(count)) { + unsigned short word; + int byte_offset; + + /* Align with word(16-bit) size */ + count--; + + /* Calculate byte access offset */ + byte_offset = offset + count; + + /* Read word and save byte */ + word = this->read_word(bufferram + byte_offset); + word = (word & ~0xff) | buffer[count]; + this->write_word(word, bufferram + byte_offset); + } + memcpy(bufferram + offset, buffer, count); return 0; @@ -549,31 +595,28 @@ static void onenand_release_device(struct mtd_info *mtd) } /** - * onenand_read_ecc - [MTD Interface] Read data with ECC + * onenand_read - [MTD Interface] Read data from flash * @param mtd MTD device structure * @param from offset to read from * @param len number of bytes to read * @param retlen pointer to variable to store the number of read bytes * @param buf the databuffer to put data - * @param oob_buf filesystem supplied oob data buffer - * @param oobsel oob selection structure * - * OneNAND read with ECC - */ -static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf, - u_char *oob_buf, struct nand_oobinfo *oobsel) + * Read with ecc +*/ +static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) { struct onenand_chip *this = mtd->priv; int read = 0, column; int thislen; int ret = 0; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "onenand_read: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); /* Do not allow reads past end of device */ if ((from + len) > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_ecc: Attempt read beyond end of device\n"); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: Attempt read beyond end of device\n"); *retlen = 0; return -EINVAL; } @@ -584,14 +627,14 @@ static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, /* TODO handling oob */ while (read < len) { - thislen = min_t(int, mtd->oobblock, len - read); + thislen = min_t(int, mtd->writesize, len - read); - column = from & (mtd->oobblock - 1); - if (column + thislen > mtd->oobblock) - thislen = mtd->oobblock - column; + column = from & (mtd->writesize - 1); + if (column + thislen > mtd->writesize) + thislen = mtd->writesize - column; if (!onenand_check_bufferram(mtd, from)) { - this->command(mtd, ONENAND_CMD_READ, from, mtd->oobblock); + this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize); ret = this->wait(mtd, FL_READING); /* First copy data and check return value for ECC handling */ @@ -606,7 +649,7 @@ static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, break; if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_read_ecc: read failed = %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_read: read failed = %d\n", ret); goto out; } @@ -628,23 +671,7 @@ out: } /** - * onenand_read - [MTD Interface] MTD compability function for onenand_read_ecc - * @param mtd MTD device structure - * @param from offset to read from - * @param len number of bytes to read - * @param retlen pointer to variable to store the number of read bytes - * @param buf the databuffer to put data - * - * This function simply calls onenand_read_ecc with oob buffer and oobsel = NULL -*/ -static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - return onenand_read_ecc(mtd, from, len, retlen, buf, NULL, NULL); -} - -/** - * onenand_read_oob - [MTD Interface] OneNAND read out-of-band + * onenand_do_read_oob - [MTD Interface] OneNAND read out-of-band * @param mtd MTD device structure * @param from offset to read from * @param len number of bytes to read @@ -653,8 +680,8 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, * * OneNAND read out-of-band data from the spare area */ -static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) +int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) { struct onenand_chip *this = mtd->priv; int read = 0, thislen, column; @@ -704,7 +731,7 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len, /* Read more? */ if (read < len) { /* Page size */ - from += mtd->oobblock; + from += mtd->writesize; column = 0; } } @@ -717,8 +744,53 @@ out: return ret; } +/** + * onenand_read_oob - [MTD Interface] NAND write data and/or out-of-band + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operation description structure + */ +static int onenand_read_oob(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) +{ + BUG_ON(ops->mode != MTD_OOB_PLACE); + + return onenand_do_read_oob(mtd, from + ops->ooboffs, ops->len, + &ops->retlen, ops->oobbuf); +} + #ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE /** + * onenand_verify_oob - [GENERIC] verify the oob contents after a write + * @param mtd MTD device structure + * @param buf the databuffer to verify + * @param to offset to read from + * @param len number of bytes to read and compare + * + */ +static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to, int len) +{ + struct onenand_chip *this = mtd->priv; + char *readp = this->page_buf; + int column = to & (mtd->oobsize - 1); + int status, i; + + this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize); + onenand_update_bufferram(mtd, to, 0); + status = this->wait(mtd, FL_READING); + if (status) + return status; + + this->read_bufferram(mtd, ONENAND_SPARERAM, readp, column, len); + + for(i = 0; i < len; i++) + if (buf[i] != 0xFF && buf[i] != readp[i]) + return -EBADMSG; + + return 0; +} + +/** * onenand_verify_page - [GENERIC] verify the chip contents after a write * @param mtd MTD device structure * @param buf the databuffer to verify @@ -731,7 +803,7 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr) void __iomem *dataram0, *dataram1; int ret = 0; - this->command(mtd, ONENAND_CMD_READ, addr, mtd->oobblock); + this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize); ret = this->wait(mtd, FL_READING); if (ret) @@ -741,53 +813,51 @@ static int onenand_verify_page(struct mtd_info *mtd, u_char *buf, loff_t addr) /* Check, if the two dataram areas are same */ dataram0 = this->base + ONENAND_DATARAM; - dataram1 = dataram0 + mtd->oobblock; + dataram1 = dataram0 + mtd->writesize; - if (memcmp(dataram0, dataram1, mtd->oobblock)) + if (memcmp(dataram0, dataram1, mtd->writesize)) return -EBADMSG; return 0; } #else #define onenand_verify_page(...) (0) +#define onenand_verify_oob(...) (0) #endif -#define NOTALIGNED(x) ((x & (mtd->oobblock - 1)) != 0) +#define NOTALIGNED(x) ((x & (mtd->writesize - 1)) != 0) /** - * onenand_write_ecc - [MTD Interface] OneNAND write with ECC + * onenand_write - [MTD Interface] write buffer to FLASH * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write * @param retlen pointer to variable to store the number of written bytes * @param buf the data to write - * @param eccbuf filesystem supplied oob data buffer - * @param oobsel oob selection structure * - * OneNAND write with ECC + * Write with ECC */ -static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf, - u_char *eccbuf, struct nand_oobinfo *oobsel) +static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) { struct onenand_chip *this = mtd->priv; int written = 0; int ret = 0; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "onenand_write: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ *retlen = 0; /* Do not allow writes past end of device */ if (unlikely((to + len) > mtd->size)) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: Attempt write to past end of device\n"); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt write to past end of device\n"); return -EINVAL; } /* Reject writes, which are not page aligned */ if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(len))) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: Attempt to write not page aligned data\n"); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: Attempt to write not page aligned data\n"); return -EINVAL; } @@ -796,20 +866,20 @@ static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, /* Loop until all data write */ while (written < len) { - int thislen = min_t(int, mtd->oobblock, len - written); + int thislen = min_t(int, mtd->writesize, len - written); - this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock); + this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->writesize); this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen); this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); - this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock); + this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); onenand_update_bufferram(mtd, to, 1); ret = this->wait(mtd, FL_WRITING); if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: write filaed %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: write filaed %d\n", ret); goto out; } @@ -818,7 +888,7 @@ static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, /* Only check verify write turn on */ ret = onenand_verify_page(mtd, (u_char *) buf, to); if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_ecc: verify failed %d\n", ret); + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write: verify failed %d\n", ret); goto out; } @@ -839,24 +909,7 @@ out: } /** - * onenand_write - [MTD Interface] compability function for onenand_write_ecc - * @param mtd MTD device structure - * @param to offset to write to - * @param len number of bytes to write - * @param retlen pointer to variable to store the number of written bytes - * @param buf the data to write - * - * This function simply calls onenand_write_ecc - * with oob buffer and oobsel = NULL - */ -static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - return onenand_write_ecc(mtd, to, len, retlen, buf, NULL, NULL); -} - -/** - * onenand_write_oob - [MTD Interface] OneNAND write out-of-band + * onenand_do_write_oob - [Internal] OneNAND write out-of-band * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write @@ -865,11 +918,11 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, * * OneNAND write out-of-band */ -static int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) +static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) { struct onenand_chip *this = mtd->priv; - int column, status; + int column, ret = 0; int written = 0; DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); @@ -894,16 +947,27 @@ static int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len, this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize); - this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); - this->write_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); + /* We send data to spare ram with oobsize + * to prevent byte access */ + memset(this->page_buf, 0xff, mtd->oobsize); + memcpy(this->page_buf + column, buf, thislen); + this->write_bufferram(mtd, ONENAND_SPARERAM, this->page_buf, 0, mtd->oobsize); this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); onenand_update_bufferram(mtd, to, 0); - status = this->wait(mtd, FL_WRITING); - if (status) + ret = this->wait(mtd, FL_WRITING); + if (ret) { + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: write filaed %d\n", ret); + goto out; + } + + ret = onenand_verify_oob(mtd, buf, to, thislen); + if (ret) { + DEBUG(MTD_DEBUG_LEVEL0, "onenand_write_oob: verify failed %d\n", ret); goto out; + } written += thislen; @@ -920,145 +984,22 @@ out: *retlen = written; - return 0; + return ret; } /** - * onenand_writev_ecc - [MTD Interface] write with iovec with ecc - * @param mtd MTD device structure - * @param vecs the iovectors to write - * @param count number of vectors - * @param to offset to write to - * @param retlen pointer to variable to store the number of written bytes - * @param eccbuf filesystem supplied oob data buffer - * @param oobsel oob selection structure - * - * OneNAND write with iovec with ecc + * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operation description structure */ -static int onenand_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel) +static int onenand_write_oob(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) { - struct onenand_chip *this = mtd->priv; - unsigned char *pbuf; - size_t total_len, len; - int i, written = 0; - int ret = 0; - - /* Preset written len for early exit */ - *retlen = 0; - - /* Calculate total length of data */ - total_len = 0; - for (i = 0; i < count; i++) - total_len += vecs[i].iov_len; - - DEBUG(MTD_DEBUG_LEVEL3, "onenand_writev_ecc: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count); - - /* Do not allow write past end of the device */ - if (unlikely((to + total_len) > mtd->size)) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: Attempted write past end of device\n"); - return -EINVAL; - } - - /* Reject writes, which are not page aligned */ - if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(total_len))) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: Attempt to write not page aligned data\n"); - return -EINVAL; - } - - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_WRITING); - - /* TODO handling oob */ - - /* Loop until all keve's data has been written */ - len = 0; - while (count) { - pbuf = this->page_buf; - /* - * If the given tuple is >= pagesize then - * write it out from the iov - */ - if ((vecs->iov_len - len) >= mtd->oobblock) { - pbuf = vecs->iov_base + len; - - len += mtd->oobblock; - - /* Check, if we have to switch to the next tuple */ - if (len >= (int) vecs->iov_len) { - vecs++; - len = 0; - count--; - } - } else { - int cnt = 0, thislen; - while (cnt < mtd->oobblock) { - thislen = min_t(int, mtd->oobblock - cnt, vecs->iov_len - len); - memcpy(this->page_buf + cnt, vecs->iov_base + len, thislen); - cnt += thislen; - len += thislen; - - /* Check, if we have to switch to the next tuple */ - if (len >= (int) vecs->iov_len) { - vecs++; - len = 0; - count--; - } - } - } - - this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock); + BUG_ON(ops->mode != MTD_OOB_PLACE); - this->write_bufferram(mtd, ONENAND_DATARAM, pbuf, 0, mtd->oobblock); - this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); - - this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock); - - onenand_update_bufferram(mtd, to, 1); - - ret = this->wait(mtd, FL_WRITING); - if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: write failed %d\n", ret); - goto out; - } - - - /* Only check verify write turn on */ - ret = onenand_verify_page(mtd, (u_char *) pbuf, to); - if (ret) { - DEBUG(MTD_DEBUG_LEVEL0, "onenand_writev_ecc: verify failed %d\n", ret); - goto out; - } - - written += mtd->oobblock; - - to += mtd->oobblock; - } - -out: - /* Deselect and wakt up anyone waiting on the device */ - onenand_release_device(mtd); - - *retlen = written; - - return 0; -} - -/** - * onenand_writev - [MTD Interface] compabilty function for onenand_writev_ecc - * @param mtd MTD device structure - * @param vecs the iovectors to write - * @param count number of vectors - * @param to offset to write to - * @param retlen pointer to variable to store the number of written bytes - * - * OneNAND write with kvec. This just calls the ecc function - */ -static int onenand_writev(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen) -{ - return onenand_writev_ecc(mtd, vecs, count, to, retlen, NULL, NULL); + return onenand_do_write_oob(mtd, to + ops->ooboffs, ops->len, + &ops->retlen, ops->oobbuf); } /** @@ -1227,7 +1168,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) /* We write two bytes, so we dont have to mess with 16 bit access */ ofs += mtd->oobsize + (bbm->badblockpos & ~0x01); - return mtd->write_oob(mtd, ofs , 2, &retlen, buf); + return onenand_do_write_oob(mtd, ofs , 2, &retlen, buf); } /** @@ -1324,6 +1265,304 @@ static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) return 0; } +#ifdef CONFIG_MTD_ONENAND_OTP + +/* Interal OTP operation */ +typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len, + size_t *retlen, u_char *buf); + +/** + * do_otp_read - [DEFAULT] Read OTP block area + * @param mtd MTD device structure + * @param from The offset to read + * @param len number of bytes to read + * @param retlen pointer to variable to store the number of readbytes + * @param buf the databuffer to put/get data + * + * Read OTP block area. + */ +static int do_otp_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct onenand_chip *this = mtd->priv; + int ret; + + /* Enter OTP access mode */ + this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); + this->wait(mtd, FL_OTPING); + + ret = mtd->read(mtd, from, len, retlen, buf); + + /* Exit OTP access mode */ + this->command(mtd, ONENAND_CMD_RESET, 0, 0); + this->wait(mtd, FL_RESETING); + + return ret; +} + +/** + * do_otp_write - [DEFAULT] Write OTP block area + * @param mtd MTD device structure + * @param from The offset to write + * @param len number of bytes to write + * @param retlen pointer to variable to store the number of write bytes + * @param buf the databuffer to put/get data + * + * Write OTP block area. + */ +static int do_otp_write(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct onenand_chip *this = mtd->priv; + unsigned char *pbuf = buf; + int ret; + + /* Force buffer page aligned */ + if (len < mtd->writesize) { + memcpy(this->page_buf, buf, len); + memset(this->page_buf + len, 0xff, mtd->writesize - len); + pbuf = this->page_buf; + len = mtd->writesize; + } + + /* Enter OTP access mode */ + this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); + this->wait(mtd, FL_OTPING); + + ret = mtd->write(mtd, from, len, retlen, pbuf); + + /* Exit OTP access mode */ + this->command(mtd, ONENAND_CMD_RESET, 0, 0); + this->wait(mtd, FL_RESETING); + + return ret; +} + +/** + * do_otp_lock - [DEFAULT] Lock OTP block area + * @param mtd MTD device structure + * @param from The offset to lock + * @param len number of bytes to lock + * @param retlen pointer to variable to store the number of lock bytes + * @param buf the databuffer to put/get data + * + * Lock OTP block area. + */ +static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct onenand_chip *this = mtd->priv; + int ret; + + /* Enter OTP access mode */ + this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); + this->wait(mtd, FL_OTPING); + + ret = onenand_do_write_oob(mtd, from, len, retlen, buf); + + /* Exit OTP access mode */ + this->command(mtd, ONENAND_CMD_RESET, 0, 0); + this->wait(mtd, FL_RESETING); + + return ret; +} + +/** + * onenand_otp_walk - [DEFAULT] Handle OTP operation + * @param mtd MTD device structure + * @param from The offset to read/write + * @param len number of bytes to read/write + * @param retlen pointer to variable to store the number of read bytes + * @param buf the databuffer to put/get data + * @param action do given action + * @param mode specify user and factory + * + * Handle OTP operation. + */ +static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf, + otp_op_t action, int mode) +{ + struct onenand_chip *this = mtd->priv; + int otp_pages; + int density; + int ret = 0; + + *retlen = 0; + + density = this->device_id >> ONENAND_DEVICE_DENSITY_SHIFT; + if (density < ONENAND_DEVICE_DENSITY_512Mb) + otp_pages = 20; + else + otp_pages = 10; + + if (mode == MTD_OTP_FACTORY) { + from += mtd->writesize * otp_pages; + otp_pages = 64 - otp_pages; + } + + /* Check User/Factory boundary */ + if (((mtd->writesize * otp_pages) - (from + len)) < 0) + return 0; + + while (len > 0 && otp_pages > 0) { + if (!action) { /* OTP Info functions */ + struct otp_info *otpinfo; + + len -= sizeof(struct otp_info); + if (len <= 0) + return -ENOSPC; + + otpinfo = (struct otp_info *) buf; + otpinfo->start = from; + otpinfo->length = mtd->writesize; + otpinfo->locked = 0; + + from += mtd->writesize; + buf += sizeof(struct otp_info); + *retlen += sizeof(struct otp_info); + } else { + size_t tmp_retlen; + int size = len; + + ret = action(mtd, from, len, &tmp_retlen, buf); + + buf += size; + len -= size; + *retlen += size; + + if (ret < 0) + return ret; + } + otp_pages--; + } + + return 0; +} + +/** + * onenand_get_fact_prot_info - [MTD Interface] Read factory OTP info + * @param mtd MTD device structure + * @param buf the databuffer to put/get data + * @param len number of bytes to read + * + * Read factory OTP info. + */ +static int onenand_get_fact_prot_info(struct mtd_info *mtd, + struct otp_info *buf, size_t len) +{ + size_t retlen; + int ret; + + ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_FACTORY); + + return ret ? : retlen; +} + +/** + * onenand_read_fact_prot_reg - [MTD Interface] Read factory OTP area + * @param mtd MTD device structure + * @param from The offset to read + * @param len number of bytes to read + * @param retlen pointer to variable to store the number of read bytes + * @param buf the databuffer to put/get data + * + * Read factory OTP area. + */ +static int onenand_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) +{ + return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_FACTORY); +} + +/** + * onenand_get_user_prot_info - [MTD Interface] Read user OTP info + * @param mtd MTD device structure + * @param buf the databuffer to put/get data + * @param len number of bytes to read + * + * Read user OTP info. + */ +static int onenand_get_user_prot_info(struct mtd_info *mtd, + struct otp_info *buf, size_t len) +{ + size_t retlen; + int ret; + + ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_USER); + + return ret ? : retlen; +} + +/** + * onenand_read_user_prot_reg - [MTD Interface] Read user OTP area + * @param mtd MTD device structure + * @param from The offset to read + * @param len number of bytes to read + * @param retlen pointer to variable to store the number of read bytes + * @param buf the databuffer to put/get data + * + * Read user OTP area. + */ +static int onenand_read_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) +{ + return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_USER); +} + +/** + * onenand_write_user_prot_reg - [MTD Interface] Write user OTP area + * @param mtd MTD device structure + * @param from The offset to write + * @param len number of bytes to write + * @param retlen pointer to variable to store the number of write bytes + * @param buf the databuffer to put/get data + * + * Write user OTP area. + */ +static int onenand_write_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) +{ + return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_write, MTD_OTP_USER); +} + +/** + * onenand_lock_user_prot_reg - [MTD Interface] Lock user OTP area + * @param mtd MTD device structure + * @param from The offset to lock + * @param len number of bytes to unlock + * + * Write lock mark on spare area in page 0 in OTP block + */ +static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len) +{ + unsigned char oob_buf[64]; + size_t retlen; + int ret; + + memset(oob_buf, 0xff, mtd->oobsize); + /* + * Note: OTP lock operation + * OTP block : 0xXXFC + * 1st block : 0xXXF3 (If chip support) + * Both : 0xXXF0 (If chip support) + */ + oob_buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC; + + /* + * Write lock mark to 8th word of sector0 of page0 of the spare0. + * We write 16 bytes spare area instead of 2 bytes. + */ + from = 0; + len = 16; + + ret = onenand_otp_walk(mtd, from, len, &retlen, oob_buf, do_otp_lock, MTD_OTP_USER); + + return ret ? : retlen; +} +#endif /* CONFIG_MTD_ONENAND_OTP */ + /** * onenand_print_device_info - Print device ID * @param device device ID @@ -1423,15 +1662,15 @@ static int onenand_probe(struct mtd_info *mtd) /* OneNAND page size & block size */ /* The data buffer size is equal to page size */ - mtd->oobblock = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE); - mtd->oobsize = mtd->oobblock >> 5; + mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE); + mtd->oobsize = mtd->writesize >> 5; /* Pagers per block is always 64 in OneNAND */ - mtd->erasesize = mtd->oobblock << 6; + mtd->erasesize = mtd->writesize << 6; this->erase_shift = ffs(mtd->erasesize) - 1; - this->page_shift = ffs(mtd->oobblock) - 1; + this->page_shift = ffs(mtd->writesize) - 1; this->ppb_shift = (this->erase_shift - this->page_shift); - this->page_mask = (mtd->erasesize / mtd->oobblock) - 1; + this->page_mask = (mtd->erasesize / mtd->writesize) - 1; /* REVIST: Multichip handling */ @@ -1475,7 +1714,6 @@ static void onenand_resume(struct mtd_info *mtd) "in suspended state\n"); } - /** * onenand_scan - [OneNAND Interface] Scan for the OneNAND device * @param mtd MTD device structure @@ -1522,7 +1760,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) /* Allocate buffers, if necessary */ if (!this->page_buf) { size_t len; - len = mtd->oobblock + mtd->oobsize; + len = mtd->writesize + mtd->oobsize; this->page_buf = kmalloc(len, GFP_KERNEL); if (!this->page_buf) { printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n"); @@ -1537,40 +1775,42 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) switch (mtd->oobsize) { case 64: - this->autooob = &onenand_oob_64; + this->ecclayout = &onenand_oob_64; break; case 32: - this->autooob = &onenand_oob_32; + this->ecclayout = &onenand_oob_32; break; default: printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n", mtd->oobsize); /* To prevent kernel oops */ - this->autooob = &onenand_oob_32; + this->ecclayout = &onenand_oob_32; break; } - memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo)); + mtd->ecclayout = this->ecclayout; /* Fill in remaining MTD driver data */ mtd->type = MTD_NANDFLASH; - mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC; + mtd->flags = MTD_CAP_NANDFLASH; mtd->ecctype = MTD_ECC_SW; mtd->erase = onenand_erase; mtd->point = NULL; mtd->unpoint = NULL; mtd->read = onenand_read; mtd->write = onenand_write; - mtd->read_ecc = onenand_read_ecc; - mtd->write_ecc = onenand_write_ecc; mtd->read_oob = onenand_read_oob; mtd->write_oob = onenand_write_oob; - mtd->readv = NULL; - mtd->readv_ecc = NULL; - mtd->writev = onenand_writev; - mtd->writev_ecc = onenand_writev_ecc; +#ifdef CONFIG_MTD_ONENAND_OTP + mtd->get_fact_prot_info = onenand_get_fact_prot_info; + mtd->read_fact_prot_reg = onenand_read_fact_prot_reg; + mtd->get_user_prot_info = onenand_get_user_prot_info; + mtd->read_user_prot_reg = onenand_read_user_prot_reg; + mtd->write_user_prot_reg = onenand_write_user_prot_reg; + mtd->lock_user_prot_reg = onenand_lock_user_prot_reg; +#endif mtd->sync = onenand_sync; mtd->lock = NULL; mtd->unlock = onenand_unlock; diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 4510d3361eaa..1b00dac3d7d6 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -17,6 +17,9 @@ #include <linux/mtd/onenand.h> #include <linux/mtd/compatmac.h> +extern int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf); + /** * check_short_pattern - [GENERIC] check if a pattern is in the buffer * @param buf the buffer to search @@ -87,13 +90,13 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /* No need to read pages fully, * just read required OOB bytes */ - ret = mtd->read_oob(mtd, from + j * mtd->oobblock + bd->offs, - readlen, &retlen, &buf[0]); + ret = onenand_do_read_oob(mtd, from + j * mtd->writesize + bd->offs, + readlen, &retlen, &buf[0]); if (ret) return ret; - if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { + if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) { bbm->bbt[i >> 3] |= 0x03 << (i & 0x6); printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n", i >> 1, (unsigned int) from); diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index c077d2ec9cdd..5b58523e4d4e 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -1,5 +1,5 @@ /* - * $Id: redboot.c,v 1.19 2005/12/01 10:03:51 dwmw2 Exp $ + * $Id: redboot.c,v 1.21 2006/03/30 18:34:37 bjd Exp $ * * Parse RedBoot-style Flash Image System (FIS) tables and * produce a Linux partition array to match. @@ -15,14 +15,14 @@ struct fis_image_desc { unsigned char name[16]; // Null terminated name - unsigned long flash_base; // Address within FLASH of image - unsigned long mem_base; // Address in memory where it executes - unsigned long size; // Length of image - unsigned long entry_point; // Execution entry point - unsigned long data_length; // Length of actual data - unsigned char _pad[256-(16+7*sizeof(unsigned long))]; - unsigned long desc_cksum; // Checksum over image descriptor - unsigned long file_cksum; // Checksum over image data + uint32_t flash_base; // Address within FLASH of image + uint32_t mem_base; // Address in memory where it executes + uint32_t size; // Length of image + uint32_t entry_point; // Execution entry point + uint32_t data_length; // Length of actual data + unsigned char _pad[256-(16+7*sizeof(uint32_t))]; + uint32_t desc_cksum; // Checksum over image descriptor + uint32_t file_cksum; // Checksum over image data }; struct fis_list { diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c index a3e00a4635a5..fa4362fb4dd8 100644 --- a/drivers/mtd/rfd_ftl.c +++ b/drivers/mtd/rfd_ftl.c @@ -3,7 +3,7 @@ * * Copyright (C) 2005 Sean Young <sean@mess.org> * - * $Id: rfd_ftl.c,v 1.5 2005/11/07 11:14:21 gleixner Exp $ + * $Id: rfd_ftl.c,v 1.8 2006/01/15 12:51:44 sean Exp $ * * This type of flash translation layer (FTL) is used by the Embedded BIOS * by General Software. It is known as the Resident Flash Disk (RFD), see: @@ -61,6 +61,7 @@ struct block { BLOCK_OK, BLOCK_ERASING, BLOCK_ERASED, + BLOCK_UNUSED, BLOCK_FAILED } state; int free_sectors; @@ -99,10 +100,8 @@ static int build_block_map(struct partition *part, int block_no) block->offset = part->block_size * block_no; if (le16_to_cpu(part->header_cache[0]) != RFD_MAGIC) { - block->state = BLOCK_ERASED; /* assumption */ - block->free_sectors = part->data_sectors_per_block; - part->reserved_block = block_no; - return 1; + block->state = BLOCK_UNUSED; + return -ENOENT; } block->state = BLOCK_OK; @@ -124,7 +123,7 @@ static int build_block_map(struct partition *part, int block_no) entry = 0; if (entry >= part->sector_count) { - printk(KERN_NOTICE PREFIX + printk(KERN_WARNING PREFIX "'%s': unit #%d: entry %d corrupt, " "sector %d out of range\n", part->mbd.mtd->name, block_no, i, entry); @@ -132,7 +131,7 @@ static int build_block_map(struct partition *part, int block_no) } if (part->sector_map[entry] != -1) { - printk(KERN_NOTICE PREFIX + printk(KERN_WARNING PREFIX "'%s': more than one entry for sector %d\n", part->mbd.mtd->name, entry); part->errors = 1; @@ -167,7 +166,7 @@ static int scan_header(struct partition *part) /* each erase block has three bytes header, followed by the map */ part->header_sectors_per_block = ((HEADER_MAP_OFFSET + sectors_per_block) * - sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE; + sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE; part->data_sectors_per_block = sectors_per_block - part->header_sectors_per_block; @@ -226,7 +225,7 @@ static int scan_header(struct partition *part) } if (part->reserved_block == -1) { - printk(KERN_NOTICE PREFIX "'%s': no empty erase unit found\n", + printk(KERN_WARNING PREFIX "'%s': no empty erase unit found\n", part->mbd.mtd->name); part->errors = 1; @@ -315,7 +314,7 @@ static void erase_callback(struct erase_info *erase) rc = -EIO; if (rc) { - printk(KERN_NOTICE PREFIX "'%s': unable to write RFD " + printk(KERN_ERR PREFIX "'%s': unable to write RFD " "header at 0x%lx\n", part->mbd.mtd->name, part->blocks[i].offset); @@ -348,7 +347,7 @@ static int erase_block(struct partition *part, int block) rc = part->mbd.mtd->erase(part->mbd.mtd, erase); if (rc) { - printk(KERN_WARNING PREFIX "erase of region %x,%x on '%s' " + printk(KERN_ERR PREFIX "erase of region %x,%x on '%s' " "failed\n", erase->addr, erase->len, part->mbd.mtd->name); kfree(erase); @@ -383,7 +382,7 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old rc = -EIO; if (rc) { - printk(KERN_NOTICE PREFIX "error reading '%s' at " + printk(KERN_ERR PREFIX "error reading '%s' at " "0x%lx\n", part->mbd.mtd->name, part->blocks[block_no].offset); @@ -423,7 +422,7 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old rc = -EIO; if (rc) { - printk(KERN_NOTICE PREFIX "'%s': Unable to " + printk(KERN_ERR PREFIX "'%s': Unable to " "read sector for relocation\n", part->mbd.mtd->name); @@ -520,7 +519,7 @@ static int reclaim_block(struct partition *part, u_long *old_sector) * because if we fill that one up first it'll have the most chance of having * the least live sectors at reclaim. */ -static int find_free_block(const struct partition *part) +static int find_free_block(struct partition *part) { int block, stop; @@ -533,6 +532,9 @@ static int find_free_block(const struct partition *part) block != part->reserved_block) return block; + if (part->blocks[block].state == BLOCK_UNUSED) + erase_block(part, block); + if (++block >= part->total_blocks) block = 0; @@ -541,7 +543,7 @@ static int find_free_block(const struct partition *part) return -1; } -static int find_writeable_block(struct partition *part, u_long *old_sector) +static int find_writable_block(struct partition *part, u_long *old_sector) { int rc, block; size_t retlen; @@ -570,7 +572,7 @@ static int find_writeable_block(struct partition *part, u_long *old_sector) rc = -EIO; if (rc) { - printk(KERN_NOTICE PREFIX "'%s': unable to read header at " + printk(KERN_ERR PREFIX "'%s': unable to read header at " "0x%lx\n", part->mbd.mtd->name, part->blocks[block].offset); goto err; @@ -602,7 +604,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr) rc = -EIO; if (rc) { - printk(KERN_WARNING PREFIX "error writing '%s' at " + printk(KERN_ERR PREFIX "error writing '%s' at " "0x%lx\n", part->mbd.mtd->name, addr); if (rc) goto err; @@ -652,7 +654,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf, if (part->current_block == -1 || !part->blocks[part->current_block].free_sectors) { - rc = find_writeable_block(part, old_addr); + rc = find_writable_block(part, old_addr); if (rc) goto err; } @@ -675,7 +677,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf, rc = -EIO; if (rc) { - printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n", + printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n", part->mbd.mtd->name, addr); if (rc) goto err; @@ -695,7 +697,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf, rc = -EIO; if (rc) { - printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n", + printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n", part->mbd.mtd->name, addr); if (rc) goto err; @@ -776,7 +778,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) part->block_size = block_size; else { if (!mtd->erasesize) { - printk(KERN_NOTICE PREFIX "please provide block_size"); + printk(KERN_WARNING PREFIX "please provide block_size"); return; } else @@ -791,8 +793,8 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) if (!(mtd->flags & MTD_WRITEABLE)) part->mbd.readonly = 1; else if (part->errors) { - printk(KERN_NOTICE PREFIX "'%s': errors found, " - "setting read-only", mtd->name); + printk(KERN_WARNING PREFIX "'%s': errors found, " + "setting read-only\n", mtd->name); part->mbd.readonly = 1; } |
