diff options
91 files changed, 4671 insertions, 2226 deletions
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index a8c8cce50633..6fbc41d98c1e 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl @@ -275,16 +275,13 @@ int __init board_init (void) int err = 0; /* Allocate memory for MTD device structure and private data */ - board_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip), GFP_KERNEL); + board_mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!board_mtd) { printk ("Unable to allocate NAND MTD device structure.\n"); err = -ENOMEM; goto out; } - /* Initialize structures */ - memset ((char *) board_mtd, 0, sizeof(struct mtd_info) + sizeof(struct nand_chip)); - /* map physical adress */ baseaddr = (unsigned long)ioremap(CHIP_PHYSICAL_ADDRESS, 1024); if(!baseaddr){ diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index fbec8cd55e38..8848e8ac705d 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -278,6 +278,14 @@ config SSFDC This enables read only access to SmartMedia formatted NAND flash. You can mount it with FAT file system. +config MTD_OOPS + tristate "Log panic/oops to an MTD buffer" + depends on MTD + help + This enables panic and oops messages to be logged to a circular + buffer in a flash partition where it can be read back at some + later point. + source "drivers/mtd/chips/Kconfig" source "drivers/mtd/maps/Kconfig" diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 6d958a4566ff..7f0b04b4caa7 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_NFTL) += nftl.o obj-$(CONFIG_INFTL) += inftl.o obj-$(CONFIG_RFD_FTL) += rfd_ftl.o obj-$(CONFIG_SSFDC) += ssfdc.o +obj-$(CONFIG_MTD_OOPS) += mtdoops.o nftl-objs := nftlcore.o nftlmount.o inftl-objs := inftlcore.o inftlmount.o diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 2f19fa78d24a..3aa3dca56ae6 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -526,7 +526,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, struct cfi_pri_intelext *extp = cfi->cmdset_priv; /* - * Probing of multi-partition flash ships. + * Probing of multi-partition flash chips. * * To support multiple partitions when available, we simply arrange * for each of them to have their own flchip structure even if they @@ -653,7 +653,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr resettime: timeo = jiffies + HZ; retry: - if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING || mode == FL_OTP_WRITE)) { + if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING || mode == FL_OTP_WRITE || mode == FL_SHUTDOWN)) { /* * OK. We have possibility for contension on the write/erase * operations which are global to the real chip and not per @@ -798,6 +798,9 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr if (mode == FL_READY && chip->oldstate == FL_READY) return 0; + case FL_SHUTDOWN: + /* The machine is rebooting now,so no one can get chip anymore */ + return -EIO; default: sleep: set_current_state(TASK_UNINTERRUPTIBLE); @@ -1166,28 +1169,34 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; - unsigned long ofs; + unsigned long ofs, last_end = 0; int chipnum; int ret = 0; if (!map->virt || (from + len > mtd->size)) return -EINVAL; - *mtdbuf = (void *)map->virt + from; - *retlen = 0; - /* Now lock the chip(s) to POINT state */ /* ofs: offset within the first chip that the first read should start */ chipnum = (from >> cfi->chipshift); ofs = from - (chipnum << cfi->chipshift); + *mtdbuf = (void *)map->virt + cfi->chips[chipnum].start + ofs; + *retlen = 0; + while (len) { unsigned long thislen; if (chipnum >= cfi->numchips) break; + /* We cannot point across chips that are virtually disjoint */ + if (!last_end) + last_end = cfi->chips[chipnum].start; + else if (cfi->chips[chipnum].start != last_end) + break; + if ((len + ofs -1) >> cfi->chipshift) thislen = (1<<cfi->chipshift) - ofs; else @@ -1201,6 +1210,7 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si len -= thislen; ofs = 0; + last_end += 1 << cfi->chipshift; chipnum++; } return 0; @@ -1780,7 +1790,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, return ret; } -int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) +static int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) { unsigned long ofs, len; int ret; @@ -1930,7 +1940,7 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len) printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n", __FUNCTION__, ofs, len); cfi_varsize_frob(mtd, do_printlockstatus_oneblock, - ofs, len, 0); + ofs, len, NULL); #endif ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, @@ -1940,7 +1950,7 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len) printk(KERN_DEBUG "%s: lock status after, ret=%d\n", __FUNCTION__, ret); cfi_varsize_frob(mtd, do_printlockstatus_oneblock, - ofs, len, 0); + ofs, len, NULL); #endif return ret; @@ -1954,7 +1964,7 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X\n", __FUNCTION__, ofs, len); cfi_varsize_frob(mtd, do_printlockstatus_oneblock, - ofs, len, 0); + ofs, len, NULL); #endif ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, @@ -1964,7 +1974,7 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) printk(KERN_DEBUG "%s: lock status after, ret=%d\n", __FUNCTION__, ret); cfi_varsize_frob(mtd, do_printlockstatus_oneblock, - ofs, len, 0); + ofs, len, NULL); #endif return ret; @@ -2255,7 +2265,7 @@ static void cfi_intelext_save_locks(struct mtd_info *mtd) adr = region->offset + block * len; status = cfi_varsize_frob(mtd, - do_getlockstatus_oneblock, adr, len, 0); + do_getlockstatus_oneblock, adr, len, NULL); if (status) set_bit(block, region->lockmap); else @@ -2402,10 +2412,10 @@ static int cfi_intelext_reset(struct mtd_info *mtd) and switch to array mode so any bootloader in flash is accessible for soft reboot. */ spin_lock(chip->mutex); - ret = get_chip(map, chip, chip->start, FL_SYNCING); + ret = get_chip(map, chip, chip->start, FL_SHUTDOWN); if (!ret) { map_write(map, CMD(0xff), chip->start); - chip->state = FL_READY; + chip->state = FL_SHUTDOWN; } spin_unlock(chip->mutex); } diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 1f6445840461..389acc600f5e 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -1609,7 +1609,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, } -int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) +static int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) { unsigned long ofs, len; int ret; diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index 58e561e87699..a67b23b87fc0 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -17,7 +17,6 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/interrupt.h> -#include <linux/init.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> @@ -70,6 +69,7 @@ /* Fujitsu */ #define MBM29F040C 0x00A4 +#define MBM29F800BA 0x2258 #define MBM29LV650UE 0x22D7 #define MBM29LV320TE 0x22F6 #define MBM29LV320BE 0x22F9 @@ -129,6 +129,7 @@ #define LH28F640BF 0x00b0 /* ST - www.st.com */ +#define M29F800AB 0x0058 #define M29W800DT 0x00D7 #define M29W800DB 0x005B #define M29W160DT 0x22C4 @@ -646,6 +647,23 @@ static const struct amd_flash_info jedec_table[] = { } }, { .mfr_id = MANUFACTURER_FUJITSU, + .dev_id = MBM29F800BA, + .name = "Fujitsu MBM29F800BA", + .uaddr = { + [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */ + [1] = MTD_UADDR_0x0555_0x02AA, /* x16 */ + }, + .DevSize = SIZE_1MiB, + .CmdSet = P_ID_AMD_STD, + .NumEraseRegions= 4, + .regions = { + ERASEINFO(0x04000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x08000,1), + ERASEINFO(0x10000,15), + } + }, { + .mfr_id = MANUFACTURER_FUJITSU, .dev_id = MBM29LV650UE, .name = "Fujitsu MBM29LV650UE", .uaddr = { @@ -1510,6 +1528,23 @@ static const struct amd_flash_info jedec_table[] = { ERASEINFO(0x1000,256) } + }, { + .mfr_id = MANUFACTURER_ST, + .dev_id = M29F800AB, + .name = "ST M29F800AB", + .uaddr = { + [0] = MTD_UADDR_0x0AAA_0x0555, /* x8 */ + [1] = MTD_UADDR_0x0555_0x02AA, /* x16 */ + }, + .DevSize = SIZE_1MiB, + .CmdSet = P_ID_AMD_STD, + .NumEraseRegions= 4, + .regions = { + ERASEINFO(0x04000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x08000,1), + ERASEINFO(0x10000,15), + } }, { .mfr_id = MANUFACTURER_ST, /* FIXME - CFI device? */ .dev_id = M29W800DT, diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index ff642f8fbee7..811d56fd890f 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -60,21 +60,22 @@ config MTD_DATAFLASH Sometimes DataFlash chips are packaged inside MMC-format cards; at this writing, the MMC stack won't handle those. -config MTD_DATAFLASH26 - tristate "AT91RM9200 DataFlash AT26xxx" - depends on MTD && ARCH_AT91RM9200 && AT91_SPI - help - This enables access to the DataFlash chip (AT26xxx) on an - AT91RM9200-based board. - If you have such a board and such a DataFlash, say 'Y'. - config MTD_M25P80 - tristate "Support for M25 SPI Flash" + tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)" depends on SPI_MASTER && EXPERIMENTAL help - This enables access to ST M25P80 and similar SPI flash chips, - used for program and data storage. Set up your spi devices - with the right board-specific platform data. + This enables access to most modern SPI flash chips, used for + program and data storage. Series supported include Atmel AT26DF, + Spansion S25SL, SST 25VF, ST M25P, and Winbond W25X. Other chips + are supported as well. See the driver source for the current list, + or to add other chips. + + Note that the original DataFlash chips (AT45 series, not AT26DF), + need an entirely different driver. + + Set up your spi devices with the right board-specific platform data, + if you want to specify device partitioning or to use a device which + doesn't support the JEDEC ID instruction. config MTD_SLRAM tristate "Uncached system RAM" diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile index 8ab568b3f533..0f788d5c4bf8 100644 --- a/drivers/mtd/devices/Makefile +++ b/drivers/mtd/devices/Makefile @@ -16,5 +16,4 @@ obj-$(CONFIG_MTD_MTDRAM) += mtdram.o obj-$(CONFIG_MTD_LART) += lart.o obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o -obj-$(CONFIG_MTD_DATAFLASH26) += at91_dataflash26.o obj-$(CONFIG_MTD_M25P80) += m25p80.o diff --git a/drivers/mtd/devices/at91_dataflash26.c b/drivers/mtd/devices/at91_dataflash26.c deleted file mode 100644 index 64ce37f986fc..000000000000 --- a/drivers/mtd/devices/at91_dataflash26.c +++ /dev/null @@ -1,485 +0,0 @@ -/* - * Atmel DataFlash driver for Atmel AT91RM9200 (Thunder) - * This is a largely modified version of at91_dataflash.c that - * supports AT26xxx dataflash chips. The original driver supports - * AT45xxx chips. - * - * Note: This driver was only tested with an AT26F004. It should be - * easy to make it work with other AT26xxx dataflash devices, though. - * - * Copyright (C) 2007 Hans J. Koch <hjk@linutronix.de> - * original Copyright (C) SAN People (Pty) Ltd - * - * 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/config.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/mtd/mtd.h> - -#include <asm/arch/at91_spi.h> - -#define DATAFLASH_MAX_DEVICES 4 /* max number of dataflash devices */ - -#define MANUFACTURER_ID_ATMEL 0x1F - -/* command codes */ - -#define AT26_OP_READ_STATUS 0x05 -#define AT26_OP_READ_DEV_ID 0x9F -#define AT26_OP_ERASE_PAGE_4K 0x20 -#define AT26_OP_READ_ARRAY_FAST 0x0B -#define AT26_OP_SEQUENTIAL_WRITE 0xAF -#define AT26_OP_WRITE_ENABLE 0x06 -#define AT26_OP_WRITE_DISABLE 0x04 -#define AT26_OP_SECTOR_PROTECT 0x36 -#define AT26_OP_SECTOR_UNPROTECT 0x39 - -/* status register bits */ - -#define AT26_STATUS_BUSY 0x01 -#define AT26_STATUS_WRITE_ENABLE 0x02 - -struct dataflash_local -{ - int spi; /* SPI chip-select number */ - unsigned int page_size; /* number of bytes per page */ -}; - - -/* Detected DataFlash devices */ -static struct mtd_info* mtd_devices[DATAFLASH_MAX_DEVICES]; -static int nr_devices = 0; - -/* Allocate a single SPI transfer descriptor. We're assuming that if multiple - SPI transfers occur at the same time, spi_access_bus() will serialize them. - If this is not valid, then either (i) each dataflash 'priv' structure - needs it's own transfer descriptor, (ii) we lock this one, or (iii) use - another mechanism. */ -static struct spi_transfer_list* spi_transfer_desc; - -/* - * Perform a SPI transfer to access the DataFlash device. - */ -static int do_spi_transfer(int nr, char* tx, int tx_len, char* rx, int rx_len, - char* txnext, int txnext_len, char* rxnext, int rxnext_len) -{ - struct spi_transfer_list* list = spi_transfer_desc; - - list->tx[0] = tx; list->txlen[0] = tx_len; - list->rx[0] = rx; list->rxlen[0] = rx_len; - - list->tx[1] = txnext; list->txlen[1] = txnext_len; - list->rx[1] = rxnext; list->rxlen[1] = rxnext_len; - - list->nr_transfers = nr; - /* Note: spi_transfer() always returns 0, there are no error checks */ - return spi_transfer(list); -} - -/* - * Return the status of the DataFlash device. - */ -static unsigned char at91_dataflash26_status(void) -{ - unsigned char command[2]; - - command[0] = AT26_OP_READ_STATUS; - command[1] = 0; - - do_spi_transfer(1, command, 2, command, 2, NULL, 0, NULL, 0); - - return command[1]; -} - -/* - * Poll the DataFlash device until it is READY. - */ -static unsigned char at91_dataflash26_waitready(void) -{ - unsigned char status; - - while (1) { - status = at91_dataflash26_status(); - if (!(status & AT26_STATUS_BUSY)) - return status; - } -} - -/* - * Enable/disable write access - */ - static void at91_dataflash26_write_enable(int enable) -{ - unsigned char cmd[2]; - - DEBUG(MTD_DEBUG_LEVEL3, "write_enable: enable=%i\n", enable); - - if (enable) - cmd[0] = AT26_OP_WRITE_ENABLE; - else - cmd[0] = AT26_OP_WRITE_DISABLE; - cmd[1] = 0; - - do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0); -} - -/* - * Protect/unprotect sector - */ - static void at91_dataflash26_sector_protect(loff_t addr, int protect) -{ - unsigned char cmd[4]; - - DEBUG(MTD_DEBUG_LEVEL3, "sector_protect: addr=0x%06x prot=%d\n", - addr, protect); - - if (protect) - cmd[0] = AT26_OP_SECTOR_PROTECT; - else - cmd[0] = AT26_OP_SECTOR_UNPROTECT; - cmd[1] = (addr & 0x00FF0000) >> 16; - cmd[2] = (addr & 0x0000FF00) >> 8; - cmd[3] = (addr & 0x000000FF); - - do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0); -} - -/* - * Erase blocks of flash. - */ -static int at91_dataflash26_erase(struct mtd_info *mtd, - struct erase_info *instr) -{ - struct dataflash_local *priv = (struct dataflash_local *) mtd->priv; - unsigned char cmd[4]; - - DEBUG(MTD_DEBUG_LEVEL1, "dataflash_erase: addr=0x%06x len=%i\n", - instr->addr, instr->len); - - /* Sanity checks */ - if (priv->page_size != 4096) - return -EINVAL; /* Can't handle other sizes at the moment */ - - if ( ((instr->len % mtd->erasesize) != 0) - || ((instr->len % priv->page_size) != 0) - || ((instr->addr % priv->page_size) != 0) - || ((instr->addr + instr->len) > mtd->size)) - return -EINVAL; - - spi_access_bus(priv->spi); - - while (instr->len > 0) { - at91_dataflash26_write_enable(1); - at91_dataflash26_sector_protect(instr->addr, 0); - at91_dataflash26_write_enable(1); - cmd[0] = AT26_OP_ERASE_PAGE_4K; - cmd[1] = (instr->addr & 0x00FF0000) >> 16; - cmd[2] = (instr->addr & 0x0000FF00) >> 8; - cmd[3] = (instr->addr & 0x000000FF); - - DEBUG(MTD_DEBUG_LEVEL3, "ERASE: (0x%02x) 0x%02x 0x%02x" - "0x%02x\n", - cmd[0], cmd[1], cmd[2], cmd[3]); - - do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0); - at91_dataflash26_waitready(); - - instr->addr += priv->page_size; /* next page */ - instr->len -= priv->page_size; - } - - at91_dataflash26_write_enable(0); - spi_release_bus(priv->spi); - - /* Inform MTD subsystem that erase is complete */ - instr->state = MTD_ERASE_DONE; - if (instr->callback) - instr->callback(instr); - - return 0; -} - -/* - * Read from the DataFlash device. - * from : Start offset in flash device - * len : Number of bytes to read - * retlen : Number of bytes actually read - * buf : Buffer that will receive data - */ -static int at91_dataflash26_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - struct dataflash_local *priv = (struct dataflash_local *) mtd->priv; - unsigned char cmd[5]; - - DEBUG(MTD_DEBUG_LEVEL1, "dataflash_read: %lli .. %lli\n", - from, from+len); - - *retlen = 0; - - /* Sanity checks */ - if (!len) - return 0; - if (from + len > mtd->size) - return -EINVAL; - - cmd[0] = AT26_OP_READ_ARRAY_FAST; - cmd[1] = (from & 0x00FF0000) >> 16; - cmd[2] = (from & 0x0000FF00) >> 8; - cmd[3] = (from & 0x000000FF); - /* cmd[4] is a "Don't care" byte */ - - DEBUG(MTD_DEBUG_LEVEL3, "READ: (0x%02x) 0x%02x 0x%02x 0x%02x\n", - cmd[0], cmd[1], cmd[2], cmd[3]); - - spi_access_bus(priv->spi); - do_spi_transfer(2, cmd, 5, cmd, 5, buf, len, buf, len); - spi_release_bus(priv->spi); - - *retlen = len; - return 0; -} - -/* - * Write to the DataFlash device. - * to : Start offset in flash device - * len : Number of bytes to write - * retlen : Number of bytes actually written - * buf : Buffer containing the data - */ -static int at91_dataflash26_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - struct dataflash_local *priv = (struct dataflash_local *) mtd->priv; - unsigned int addr, buf_index = 0; - int ret = -EIO, sector, last_sector; - unsigned char status, cmd[5]; - - DEBUG(MTD_DEBUG_LEVEL1, "dataflash_write: %lli .. %lli\n", to, to+len); - - *retlen = 0; - - /* Sanity checks */ - if (!len) - return 0; - if (to + len > mtd->size) - return -EINVAL; - - spi_access_bus(priv->spi); - - addr = to; - last_sector = -1; - - while (buf_index < len) { - sector = addr / priv->page_size; - /* Write first byte if a new sector begins */ - if (sector != last_sector) { - at91_dataflash26_write_enable(1); - at91_dataflash26_sector_protect(addr, 0); - at91_dataflash26_write_enable(1); - - /* Program first byte of a new sector */ - cmd[0] = AT26_OP_SEQUENTIAL_WRITE; - cmd[1] = (addr & 0x00FF0000) >> 16; - cmd[2] = (addr & 0x0000FF00) >> 8; - cmd[3] = (addr & 0x000000FF); - cmd[4] = buf[buf_index++]; - do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0); - status = at91_dataflash26_waitready(); - addr++; - /* On write errors, the chip resets the write enable - flag. This also happens after the last byte of a - sector is successfully programmed. */ - if ( ( !(status & AT26_STATUS_WRITE_ENABLE)) - && ((addr % priv->page_size) != 0) ) { - DEBUG(MTD_DEBUG_LEVEL1, - "write error1: addr=0x%06x, " - "status=0x%02x\n", addr, status); - goto write_err; - } - (*retlen)++; - last_sector = sector; - } - - /* Write subsequent bytes in the same sector */ - cmd[0] = AT26_OP_SEQUENTIAL_WRITE; - cmd[1] = buf[buf_index++]; - do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0); - status = at91_dataflash26_waitready(); - addr++; - - if ( ( !(status & AT26_STATUS_WRITE_ENABLE)) - && ((addr % priv->page_size) != 0) ) { - DEBUG(MTD_DEBUG_LEVEL1, "write error2: addr=0x%06x, " - "status=0x%02x\n", addr, status); - goto write_err; - } - - (*retlen)++; - } - - ret = 0; - at91_dataflash26_write_enable(0); -write_err: - spi_release_bus(priv->spi); - return ret; -} - -/* - * Initialize and register DataFlash device with MTD subsystem. - */ -static int __init add_dataflash(int channel, char *name, int nr_pages, - int pagesize) -{ - struct mtd_info *device; - struct dataflash_local *priv; - - if (nr_devices >= DATAFLASH_MAX_DEVICES) { - printk(KERN_ERR "at91_dataflash26: Too many devices " - "detected\n"); - return 0; - } - - device = kzalloc(sizeof(struct mtd_info) + strlen(name) + 8, - GFP_KERNEL); - if (!device) - return -ENOMEM; - - device->name = (char *)&device[1]; - sprintf(device->name, "%s.spi%d", name, channel); - device->size = nr_pages * pagesize; - device->erasesize = pagesize; - device->owner = THIS_MODULE; - device->type = MTD_DATAFLASH; - device->flags = MTD_CAP_NORFLASH; - device->erase = at91_dataflash26_erase; - device->read = at91_dataflash26_read; - device->write = at91_dataflash26_write; - - priv = (struct dataflash_local *)kzalloc(sizeof(struct dataflash_local), - GFP_KERNEL); - if (!priv) { - kfree(device); - return -ENOMEM; - } - - priv->spi = channel; - priv->page_size = pagesize; - device->priv = priv; - - mtd_devices[nr_devices] = device; - nr_devices++; - printk(KERN_INFO "at91_dataflash26: %s detected [spi%i] (%i bytes)\n", - name, channel, device->size); - - return add_mtd_device(device); -} - -/* - * Detect and initialize DataFlash device connected to specified SPI channel. - * - */ - -struct dataflash26_types { - unsigned char id0; - unsigned char id1; - char *name; - int pagesize; - int nr_pages; -}; - -struct dataflash26_types df26_types[] = { - { - .id0 = 0x04, - .id1 = 0x00, - .name = "AT26F004", - .pagesize = 4096, - .nr_pages = 128, - }, - { - .id0 = 0x45, - .id1 = 0x01, - .name = "AT26DF081A", /* Not tested ! */ - .pagesize = 4096, - .nr_pages = 256, - }, -}; - -static int __init at91_dataflash26_detect(int channel) -{ - unsigned char status, cmd[5]; - int i; - - spi_access_bus(channel); - status = at91_dataflash26_status(); - - if (status == 0 || status == 0xff) { - printk(KERN_ERR "at91_dataflash26_detect: status error %d\n", - status); - spi_release_bus(channel); - return -ENODEV; - } - - cmd[0] = AT26_OP_READ_DEV_ID; - do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0); - spi_release_bus(channel); - - if (cmd[1] != MANUFACTURER_ID_ATMEL) - return -ENODEV; - - for (i = 0; i < ARRAY_SIZE(df26_types); i++) { - if ( cmd[2] == df26_types[i].id0 - && cmd[3] == df26_types[i].id1) - return add_dataflash(channel, - df26_types[i].name, - df26_types[i].nr_pages, - df26_types[i].pagesize); - } - - printk(KERN_ERR "at91_dataflash26_detect: Unsupported device " - "(0x%02x/0x%02x)\n", cmd[2], cmd[3]); - return -ENODEV; -} - -static int __init at91_dataflash26_init(void) -{ - spi_transfer_desc = kmalloc(sizeof(struct spi_transfer_list), - GFP_KERNEL); - if (!spi_transfer_desc) - return -ENOMEM; - - /* DataFlash (SPI chip select 0) */ - at91_dataflash26_detect(0); - -#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD - /* DataFlash card (SPI chip select 3) */ - at91_dataflash26_detect(3); -#endif - return 0; -} - -static void __exit at91_dataflash26_exit(void) -{ - int i; - - for (i = 0; i < DATAFLASH_MAX_DEVICES; i++) { - if (mtd_devices[i]) { - del_mtd_device(mtd_devices[i]); - kfree(mtd_devices[i]->priv); - kfree(mtd_devices[i]); - } - } - nr_devices = 0; - kfree(spi_transfer_desc); -} - -module_init(at91_dataflash26_init); -module_exit(at91_dataflash26_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Hans J. Koch"); -MODULE_DESCRIPTION("DataFlash AT26xxx driver for Atmel AT91RM9200"); diff --git a/drivers/mtd/devices/docprobe.c b/drivers/mtd/devices/docprobe.c index 54aa75907640..d8cc94ec4e50 100644 --- a/drivers/mtd/devices/docprobe.c +++ b/drivers/mtd/devices/docprobe.c @@ -81,9 +81,7 @@ static unsigned long __initdata doc_locations[] = { #endif /* CONFIG_MTD_DOCPROBE_HIGH */ #elif defined(__PPC__) 0xe4000000, -#elif defined(CONFIG_MOMENCO_OCELOT_G) - 0xff000000, -##else +#else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif 0xffffffff }; diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 78c2511ae9e0..98df5bcc02f3 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -1,5 +1,5 @@ /* - * MTD SPI driver for ST M25Pxx flash chips + * MTD SPI driver for ST M25Pxx (and similar) serial flash chips * * Author: Mike Lavender, mike@steroidmicros.com * @@ -19,33 +19,32 @@ #include <linux/module.h> #include <linux/device.h> #include <linux/interrupt.h> -#include <linux/interrupt.h> +#include <linux/mutex.h> + #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> + #include <linux/spi/spi.h> #include <linux/spi/flash.h> -#include <asm/semaphore.h> - - -/* NOTE: AT 25F and SST 25LF series are very similar, - * but commands for sector erase and chip id differ... - */ #define FLASH_PAGESIZE 256 /* Flash opcodes. */ -#define OPCODE_WREN 6 /* Write enable */ -#define OPCODE_RDSR 5 /* Read status register */ -#define OPCODE_READ 3 /* Read data bytes */ -#define OPCODE_PP 2 /* Page program */ -#define OPCODE_SE 0xd8 /* Sector erase */ -#define OPCODE_RES 0xab /* Read Electronic Signature */ +#define OPCODE_WREN 0x06 /* Write enable */ +#define OPCODE_RDSR 0x05 /* Read status register */ +#define OPCODE_READ 0x03 /* Read data bytes (low frequency) */ +#define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */ +#define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */ +#define OPCODE_BE_4K 0x20 /* Erase 4KiB block */ +#define OPCODE_BE_32K 0x52 /* Erase 32KiB block */ +#define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */ #define OPCODE_RDID 0x9f /* Read JEDEC ID */ /* Status Register bits. */ #define SR_WIP 1 /* Write in progress */ #define SR_WEL 2 /* Write enable latch */ +/* meaning of other SR_* bits may differ between vendors */ #define SR_BP0 4 /* Block protect 0 */ #define SR_BP1 8 /* Block protect 1 */ #define SR_BP2 0x10 /* Block protect 2 */ @@ -65,9 +64,10 @@ struct m25p { struct spi_device *spi; - struct semaphore lock; + struct mutex lock; struct mtd_info mtd; - unsigned partitioned; + unsigned partitioned:1; + u8 erase_opcode; u8 command[4]; }; @@ -150,8 +150,9 @@ static int wait_till_ready(struct m25p *flash) */ static int erase_sector(struct m25p *flash, u32 offset) { - DEBUG(MTD_DEBUG_LEVEL3, "%s: %s at 0x%08x\n", flash->spi->dev.bus_id, - __FUNCTION__, offset); + DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB at 0x%08x\n", + flash->spi->dev.bus_id, __FUNCTION__, + flash->mtd.erasesize / 1024, offset); /* Wait until finished previous write command. */ if (wait_till_ready(flash)) @@ -161,7 +162,7 @@ static int erase_sector(struct m25p *flash, u32 offset) write_enable(flash); /* Set up command buffer. */ - flash->command[0] = OPCODE_SE; + flash->command[0] = flash->erase_opcode; flash->command[1] = offset >> 16; flash->command[2] = offset >> 8; flash->command[3] = offset; @@ -201,13 +202,17 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr) addr = instr->addr; len = instr->len; - down(&flash->lock); + mutex_lock(&flash->lock); + + /* REVISIT in some cases we could speed up erasing large regions + * by using OPCODE_SE instead of OPCODE_BE_4K + */ /* now erase those sectors */ while (len) { if (erase_sector(flash, addr)) { instr->state = MTD_ERASE_FAILED; - up(&flash->lock); + mutex_unlock(&flash->lock); return -EIO; } @@ -215,7 +220,7 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr) len -= mtd->erasesize; } - up(&flash->lock); + mutex_unlock(&flash->lock); instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); @@ -260,16 +265,19 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, if (retlen) *retlen = 0; - down(&flash->lock); + mutex_lock(&flash->lock); /* Wait till previous write/erase is done. */ if (wait_till_ready(flash)) { /* REVISIT status return?? */ - up(&flash->lock); + mutex_unlock(&flash->lock); return 1; } - /* NOTE: OPCODE_FAST_READ (if available) is faster... */ + /* FIXME switch to OPCODE_FAST_READ. It's required for higher + * clocks; and at this writing, every chip this driver handles + * supports that opcode. + */ /* Set up the write data buffer. */ flash->command[0] = OPCODE_READ; @@ -281,7 +289,7 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, *retlen = m.actual_length - sizeof(flash->command); - up(&flash->lock); + mutex_unlock(&flash->lock); return 0; } @@ -323,7 +331,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, t[1].tx_buf = buf; spi_message_add_tail(&t[1], &m); - down(&flash->lock); + mutex_lock(&flash->lock); /* Wait until finished previous write command. */ if (wait_till_ready(flash)) @@ -381,10 +389,10 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, if (retlen) *retlen += m.actual_length - sizeof(flash->command); - } - } + } + } - up(&flash->lock); + mutex_unlock(&flash->lock); return 0; } @@ -398,24 +406,118 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, struct flash_info { char *name; - u8 id; - u16 jedec_id; + + /* JEDEC id zero means "no ID" (most older chips); otherwise it has + * a high byte of zero plus three data bytes: the manufacturer id, + * then a two byte device id. + */ + u32 jedec_id; + + /* The size listed here is what works with OPCODE_SE, which isn't + * necessarily called a "sector" by the vendor. + */ unsigned sector_size; - unsigned n_sectors; + u16 n_sectors; + + u16 flags; +#define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */ }; + +/* NOTE: double check command sets and memory organization when you add + * more flash chips. This current list focusses on newer chips, which + * have been converging on command sets which including JEDEC ID. + */ static struct flash_info __devinitdata m25p_data [] = { - /* REVISIT: fill in JEDEC ids, for parts that have them */ - { "m25p05", 0x05, 0x2010, 32 * 1024, 2 }, - { "m25p10", 0x10, 0x2011, 32 * 1024, 4 }, - { "m25p20", 0x11, 0x2012, 64 * 1024, 4 }, - { "m25p40", 0x12, 0x2013, 64 * 1024, 8 }, - { "m25p80", 0x13, 0x0000, 64 * 1024, 16 }, - { "m25p16", 0x14, 0x2015, 64 * 1024, 32 }, - { "m25p32", 0x15, 0x2016, 64 * 1024, 64 }, - { "m25p64", 0x16, 0x2017, 64 * 1024, 128 }, + + /* Atmel -- some are (confusingly) marketed as "DataFlash" */ + { "at25fs010", 0x1f6601, 32 * 1024, 4, SECT_4K, }, + { "at25fs040", 0x1f6604, 64 * 1024, 8, SECT_4K, }, + + { "at25df041a", 0x1f4401, 64 * 1024, 8, SECT_4K, }, + + { "at26f004", 0x1f0400, 64 * 1024, 8, SECT_4K, }, + { "at26df081a", 0x1f4501, 64 * 1024, 16, SECT_4K, }, + { "at26df161a", 0x1f4601, 64 * 1024, 32, SECT_4K, }, + { "at26df321", 0x1f4701, 64 * 1024, 64, SECT_4K, }, + + /* Spansion -- single (large) sector size only, at least + * for the chips listed here (without boot sectors). + */ + { "s25sl004a", 0x010212, 64 * 1024, 8, }, + { "s25sl008a", 0x010213, 64 * 1024, 16, }, + { "s25sl016a", 0x010214, 64 * 1024, 32, }, + { "s25sl032a", 0x010215, 64 * 1024, 64, }, + { "s25sl064a", 0x010216, 64 * 1024, 128, }, + + /* SST -- large erase sizes are "overlays", "sectors" are 4K */ + { "sst25vf040b", 0xbf258d, 64 * 1024, 8, SECT_4K, }, + { "sst25vf080b", 0xbf258e, 64 * 1024, 16, SECT_4K, }, + { "sst25vf016b", 0xbf2541, 64 * 1024, 32, SECT_4K, }, + { "sst25vf032b", 0xbf254a, 64 * 1024, 64, SECT_4K, }, + + /* ST Microelectronics -- newer production may have feature updates */ + { "m25p05", 0x202010, 32 * 1024, 2, }, + { "m25p10", 0x202011, 32 * 1024, 4, }, + { "m25p20", 0x202012, 64 * 1024, 4, }, + { "m25p40", 0x202013, 64 * 1024, 8, }, + { "m25p80", 0, 64 * 1024, 16, }, + { "m25p16", 0x202015, 64 * 1024, 32, }, + { "m25p32", 0x202016, 64 * 1024, 64, }, + { "m25p64", 0x202017, 64 * 1024, 128, }, + { "m25p128", 0x202018, 256 * 1024, 64, }, + + { "m45pe80", 0x204014, 64 * 1024, 16, }, + { "m45pe16", 0x204015, 64 * 1024, 32, }, + + { "m25pe80", 0x208014, 64 * 1024, 16, }, + { "m25pe16", 0x208015, 64 * 1024, 32, SECT_4K, }, + + /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ + { "w25x10", 0xef3011, 64 * 1024, 2, SECT_4K, }, + { "w25x20", 0xef3012, 64 * 1024, 4, SECT_4K, }, + { "w25x40", 0xef3013, 64 * 1024, 8, SECT_4K, }, + { "w25x80", 0xef3014, 64 * 1024, 16, SECT_4K, }, + { "w25x16", 0xef3015, 64 * 1024, 32, SECT_4K, }, + { "w25x32", 0xef3016, 64 * 1024, 64, SECT_4K, }, + { "w25x64", 0xef3017, 64 * 1024, 128, SECT_4K, }, }; +static struct flash_info *__devinit jedec_probe(struct spi_device *spi) +{ + int tmp; + u8 code = OPCODE_RDID; + u8 id[3]; + u32 jedec; + struct flash_info *info; + + /* JEDEC also defines an optional "extended device information" + * string for after vendor-specific data, after the three bytes + * we use here. Supporting some chips might require using it. + */ + tmp = spi_write_then_read(spi, &code, 1, id, 3); + if (tmp < 0) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n", + spi->dev.bus_id, tmp); + return NULL; + } + jedec = id[0]; + jedec = jedec << 8; + jedec |= id[1]; + jedec = jedec << 8; + jedec |= id[2]; + + for (tmp = 0, info = m25p_data; + tmp < ARRAY_SIZE(m25p_data); + tmp++, info++) { + if (info->jedec_id == jedec) + return info; + } + dev_err(&spi->dev, "unrecognized JEDEC id %06x\n", jedec); + return NULL; +} + + /* * board specific setup should have ensured the SPI clock used here * matches what the READ command supports, at least until this driver @@ -429,37 +531,51 @@ static int __devinit m25p_probe(struct spi_device *spi) unsigned i; /* Platform data helps sort out which chip type we have, as - * well as how this board partitions it. + * well as how this board partitions it. If we don't have + * a chip ID, try the JEDEC id commands; they'll work for most + * newer chips, even if we don't recognize the particular chip. */ data = spi->dev.platform_data; - if (!data || !data->type) { - /* FIXME some chips can identify themselves with RES - * or JEDEC get-id commands. Try them ... - */ - DEBUG(MTD_DEBUG_LEVEL1, "%s: no chip id\n", - spi->dev.bus_id); - return -ENODEV; - } + if (data && data->type) { + for (i = 0, info = m25p_data; + i < ARRAY_SIZE(m25p_data); + i++, info++) { + if (strcmp(data->type, info->name) == 0) + break; + } - for (i = 0, info = m25p_data; i < ARRAY_SIZE(m25p_data); i++, info++) { - if (strcmp(data->type, info->name) == 0) - break; - } - if (i == ARRAY_SIZE(m25p_data)) { - DEBUG(MTD_DEBUG_LEVEL1, "%s: unrecognized id %s\n", - spi->dev.bus_id, data->type); + /* unrecognized chip? */ + if (i == ARRAY_SIZE(m25p_data)) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: unrecognized id %s\n", + spi->dev.bus_id, data->type); + info = NULL; + + /* recognized; is that chip really what's there? */ + } else if (info->jedec_id) { + struct flash_info *chip = jedec_probe(spi); + + if (!chip || chip != info) { + dev_warn(&spi->dev, "found %s, expected %s\n", + chip ? chip->name : "UNKNOWN", + info->name); + info = NULL; + } + } + } else + info = jedec_probe(spi); + + if (!info) return -ENODEV; - } flash = kzalloc(sizeof *flash, GFP_KERNEL); if (!flash) return -ENOMEM; flash->spi = spi; - init_MUTEX(&flash->lock); + mutex_init(&flash->lock); dev_set_drvdata(&spi->dev, flash); - if (data->name) + if (data && data->name) flash->mtd.name = data->name; else flash->mtd.name = spi->dev.bus_id; @@ -468,17 +584,25 @@ static int __devinit m25p_probe(struct spi_device *spi) 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; flash->mtd.erase = m25p80_erase; flash->mtd.read = m25p80_read; flash->mtd.write = m25p80_write; + /* prefer "small sector" erase if possible */ + if (info->flags & SECT_4K) { + flash->erase_opcode = OPCODE_BE_4K; + flash->mtd.erasesize = 4096; + } else { + flash->erase_opcode = OPCODE_SE; + flash->mtd.erasesize = info->sector_size; + } + dev_info(&spi->dev, "%s (%d Kbytes)\n", info->name, flash->mtd.size / 1024); DEBUG(MTD_DEBUG_LEVEL2, - "mtd .name = %s, .size = 0x%.8x (%uM) " - ".erasesize = 0x%.8x (%uK) .numeraseregions = %d\n", + "mtd .name = %s, .size = 0x%.8x (%uMiB) " + ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n", flash->mtd.name, flash->mtd.size, flash->mtd.size / (1024*1024), flash->mtd.erasesize, flash->mtd.erasesize / 1024, @@ -488,7 +612,7 @@ static int __devinit m25p_probe(struct spi_device *spi) for (i = 0; i < flash->mtd.numeraseregions; i++) DEBUG(MTD_DEBUG_LEVEL2, "mtd.eraseregions[%d] = { .offset = 0x%.8x, " - ".erasesize = 0x%.8x (%uK), " + ".erasesize = 0x%.8x (%uKiB), " ".numblocks = %d }\n", i, flash->mtd.eraseregions[i].offset, flash->mtd.eraseregions[i].erasesize, @@ -516,14 +640,14 @@ static int __devinit m25p_probe(struct spi_device *spi) } if (nr_parts > 0) { - for (i = 0; i < data->nr_parts; i++) { + for (i = 0; i < nr_parts; i++) { DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = " "{.name = %s, .offset = 0x%.8x, " - ".size = 0x%.8x (%uK) }\n", - i, data->parts[i].name, - data->parts[i].offset, - data->parts[i].size, - data->parts[i].size / 1024); + ".size = 0x%.8x (%uKiB) }\n", + i, parts[i].name, + parts[i].offset, + parts[i].size, + parts[i].size / 1024); } flash->partitioned = 1; return add_mtd_partitions(&flash->mtd, parts, nr_parts); @@ -560,6 +684,11 @@ static struct spi_driver m25p80_driver = { }, .probe = m25p_probe, .remove = __devexit_p(m25p_remove), + + /* REVISIT: many of these chips have deep power-down modes, which + * should clearly be entered on suspend() to minimize power use. + * And also when they're otherwise idle... + */ }; diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index a987e917f4e0..a5ed6d232c35 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/delay.h> #include <linux/device.h> +#include <linux/mutex.h> #include <linux/spi/spi.h> #include <linux/spi/flash.h> @@ -89,7 +90,7 @@ struct dataflash { unsigned short page_offset; /* offset in flash address */ unsigned int page_size; /* of bytes per page */ - struct semaphore lock; + struct mutex lock; struct spi_device *spi; struct mtd_info mtd; @@ -167,7 +168,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) x.len = 4; spi_message_add_tail(&x, &msg); - down(&priv->lock); + mutex_lock(&priv->lock); while (instr->len > 0) { unsigned int pageaddr; int status; @@ -210,7 +211,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) instr->len -= priv->page_size; } } - up(&priv->lock); + mutex_unlock(&priv->lock); /* Inform MTD subsystem that erase is complete */ instr->state = MTD_ERASE_DONE; @@ -266,7 +267,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, x[1].len = len; spi_message_add_tail(&x[1], &msg); - down(&priv->lock); + mutex_lock(&priv->lock); /* Continuous read, max clock = f(car) which may be less than * the peak rate available. Some chips support commands with @@ -279,7 +280,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, /* plus 4 "don't care" bytes */ status = spi_sync(priv->spi, &msg); - up(&priv->lock); + mutex_unlock(&priv->lock); if (status >= 0) { *retlen = msg.actual_length - 8; @@ -336,7 +337,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, else writelen = len; - down(&priv->lock); + mutex_lock(&priv->lock); while (remaining > 0) { DEBUG(MTD_DEBUG_LEVEL3, "write @ %i:%i len=%i\n", pageaddr, offset, writelen); @@ -441,7 +442,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, else writelen = remaining; } - up(&priv->lock); + mutex_unlock(&priv->lock); return status; } @@ -463,7 +464,7 @@ add_dataflash(struct spi_device *spi, char *name, if (!priv) return -ENOMEM; - init_MUTEX(&priv->lock); + mutex_init(&priv->lock); priv->spi = spi; priv->page_size = pagesize; priv->page_offset = pageoffset; diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c index e8f686f7a357..7060a0895ce2 100644 --- a/drivers/mtd/devices/pmc551.c +++ b/drivers/mtd/devices/pmc551.c @@ -30,8 +30,8 @@ * * Notes: * Due to what I assume is more buggy SROM, the 64M PMC551 I - * have available claims that all 4 of it's DRAM banks have 64M - * of ram configured (making a grand total of 256M onboard). + * have available claims that all 4 of its DRAM banks have 64MiB + * of ram configured (making a grand total of 256MiB onboard). * This is slightly annoying since the BAR0 size reflects the * aperture size, not the dram size, and the V370PDC supplies no * other method for memory size discovery. This problem is @@ -70,7 +70,7 @@ * made the memory unusable, added a fix to code to touch up * the DRAM some. * - * Bugs/FIXME's: + * Bugs/FIXMEs: * * MUST fix the init function to not spin on a register * waiting for it to set .. this does not safely handle busted * devices that never reset the register correctly which will @@ -562,10 +562,10 @@ static u32 fixup_pmc551(struct pci_dev *dev) /* * Some screen fun */ - printk(KERN_DEBUG "pmc551: %d%c (0x%x) of %sprefetchable memory at " + printk(KERN_DEBUG "pmc551: %d%sB (0x%x) of %sprefetchable memory at " "0x%llx\n", (size < 1024) ? size : (size < 1048576) ? size >> 10 : size >> 20, - (size < 1024) ? 'B' : (size < 1048576) ? 'K' : 'M', size, + (size < 1024) ? "" : (size < 1048576) ? "Ki" : "Mi", size, ((dcmd & (0x1 << 3)) == 0) ? "non-" : "", (unsigned long long)pci_resource_start(dev, 0)); @@ -649,14 +649,10 @@ MODULE_DESCRIPTION(PMC551_VERSION); * Stuff these outside the ifdef so as to not bust compiled in driver support */ static int msize = 0; -#if defined(CONFIG_MTD_PMC551_APERTURE_SIZE) -static int asize = CONFIG_MTD_PMC551_APERTURE_SIZE; -#else static int asize = 0; -#endif module_param(msize, int, 0); -MODULE_PARM_DESC(msize, "memory size in Megabytes [1 - 1024]"); +MODULE_PARM_DESC(msize, "memory size in MiB [1 - 1024]"); module_param(asize, int, 0); MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]"); @@ -799,8 +795,7 @@ static int __init init_pmc551(void) mtd->owner = THIS_MODULE; if (add_mtd_device(mtd)) { - printk(KERN_NOTICE "pmc551: Failed to register new " - "device\n"); + printk(KERN_NOTICE "pmc551: Failed to register new device\n"); pci_iounmap(PCI_Device, priv->start); kfree(mtd->priv); kfree(mtd); @@ -811,13 +806,13 @@ static int __init init_pmc551(void) pci_dev_get(PCI_Device); printk(KERN_NOTICE "Registered pmc551 memory device.\n"); - printk(KERN_NOTICE "Mapped %dM of memory from 0x%p to 0x%p\n", + printk(KERN_NOTICE "Mapped %dMiB of memory from 0x%p to 0x%p\n", priv->asize >> 20, priv->start, priv->start + priv->asize); - printk(KERN_NOTICE "Total memory is %d%c\n", + printk(KERN_NOTICE "Total memory is %d%sB\n", (length < 1024) ? length : (length < 1048576) ? length >> 10 : length >> 20, - (length < 1024) ? 'B' : (length < 1048576) ? 'K' : 'M'); + (length < 1024) ? "" : (length < 1048576) ? "Ki" : "Mi"); priv->nextpmc551 = pmc551list; pmc551list = mtd; found++; @@ -850,7 +845,7 @@ static void __exit cleanup_pmc551(void) pmc551list = priv->nextpmc551; if (priv->start) { - printk(KERN_DEBUG "pmc551: unmapping %dM starting at " + printk(KERN_DEBUG "pmc551: unmapping %dMiB starting at " "0x%p\n", priv->asize >> 20, priv->start); pci_iounmap(priv->dev, priv->start); } diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index ecac0e438f49..b8917beeb650 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -580,14 +580,13 @@ int INFTL_mount(struct INFTLrecord *s) logical_block = block = BLOCK_NIL; /* Temporary buffer to store ANAC numbers. */ - ANACtable = kmalloc(s->nb_blocks * sizeof(u8), GFP_KERNEL); + ANACtable = kcalloc(s->nb_blocks, sizeof(u8), GFP_KERNEL); if (!ANACtable) { printk(KERN_WARNING "INFTL: allocation of ANACtable " "failed (%zd bytes)\n", s->nb_blocks * sizeof(u8)); return -ENOMEM; } - memset(ANACtable, 0, s->nb_blocks); /* * First pass is to explore each physical unit, and construct the diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 6cd132c75187..2a2a125b0c76 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -163,20 +163,12 @@ config MTD_SBC_GXX More info at <http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>. -config MTD_LUBBOCK - tristate "CFI Flash device mapped on Intel Lubbock XScale eval board" - depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS - help - This provides a driver for the on-board flash of the Intel - 'Lubbock' XScale evaluation board. - -config MTD_MAINSTONE - tristate "CFI Flash device mapped on Intel Mainstone XScale eval board" - depends on MACH_MAINSTONE && MTD_CFI_INTELEXT +config MTD_PXA2XX + tristate "CFI Flash device mapped on Intel XScale PXA2xx based boards" + depends on (PXA25x || PXA27x) && MTD_CFI_INTELEXT select MTD_PARTITIONS help - This provides a driver for the on-board flash of the Intel - 'Mainstone PXA27x evaluation board. + This provides a driver for the NOR flash attached to a PXA2xx chip. config MTD_OCTAGON tristate "JEDEC Flash device mapped on Octagon 5066 SBC" @@ -354,7 +346,7 @@ config MTD_CFI_FLAGADM config MTD_WALNUT tristate "Flash device mapped on IBM 405GP Walnut" - depends on MTD_JEDECPROBE && WALNUT + depends on MTD_JEDECPROBE && WALNUT && !PPC_MERGE help This enables access routines for the flash chips on the IBM 405GP Walnut board. If you have one of these boards and would like to @@ -370,7 +362,7 @@ config MTD_EBONY config MTD_OCOTEA tristate "Flash devices mapped on IBM 440GX Ocotea" - depends on MTD_CFI && OCOTEA + depends on MTD_CFI && OCOTEA && !PPC_MERGE help This enables access routines for the flash chips on the IBM 440GX Ocotea board. If you have one of these boards and would like to @@ -384,22 +376,6 @@ config MTD_REDWOOD Redwood board. If you have one of these boards and would like to use the flash chips on it, say 'Y'. -config MTD_TQM834x - tristate "Flash device mapped on TQ Components TQM834x Boards" - depends on MTD_CFI && TQM834x - help - This enables access routines for the flash chips on the - TQ Components TQM834x boards. If you have one of these boards - and would like to use the flash chips on it, say 'Y'. - -config MTD_OCELOT - tristate "Momenco Ocelot boot flash device" - depends on MOMENCO_OCELOT - help - This enables access routines for the boot flash device and for the - NVRAM on the Momenco Ocelot board. If you have one of these boards - and would like access to either of these, say 'Y'. - config MTD_SOLUTIONENGINE tristate "CFI Flash device mapped on Hitachi SolutionEngine" depends on SUPERH && MTD_CFI && MTD_REDBOOT_PARTS @@ -605,6 +581,13 @@ config MTD_SHARP_SL help This enables access to the flash chip on the Sharp SL Series of PDAs. +config MTD_INTEL_VR_NOR + tristate "NOR flash on Intel Vermilion Range Expansion Bus CS0" + depends on PCI + help + Map driver for a NOR flash bank located on the Expansion Bus of the + Intel Vermilion Range chipset. + config MTD_PLATRAM tristate "Map driver for platform device RAM (mtd-ram)" select MTD_RAM diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index 970b189271a2..316382a1401b 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -20,8 +20,7 @@ obj-$(CONFIG_MTD_ESB2ROM) += esb2rom.o obj-$(CONFIG_MTD_ICHXROM) += ichxrom.o obj-$(CONFIG_MTD_CK804XROM) += ck804xrom.o obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o -obj-$(CONFIG_MTD_LUBBOCK) += lubbock-flash.o -obj-$(CONFIG_MTD_MAINSTONE) += mainstone-flash.o +obj-$(CONFIG_MTD_PXA2XX) += pxa2xx-flash.o obj-$(CONFIG_MTD_MBX860) += mbx860.o obj-$(CONFIG_MTD_CEIVA) += ceiva.o obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o @@ -43,7 +42,6 @@ obj-$(CONFIG_MTD_SUN_UFLASH) += sun_uflash.o obj-$(CONFIG_MTD_VMAX) += vmax301.o obj-$(CONFIG_MTD_SCx200_DOCFLASH)+= scx200_docflash.o obj-$(CONFIG_MTD_DBOX2) += dbox2-flash.o -obj-$(CONFIG_MTD_OCELOT) += ocelot.o obj-$(CONFIG_MTD_SOLUTIONENGINE)+= solutionengine.o obj-$(CONFIG_MTD_PCI) += pci.o obj-$(CONFIG_MTD_ALCHEMY) += alchemy-flash.o @@ -70,4 +68,4 @@ obj-$(CONFIG_MTD_SHARP_SL) += sharpsl-flash.o obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o -obj-$(CONFIG_MTD_TQM834x) += tqm834x.o +obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c index 84fbe0e8c47e..82811bcb0436 100644 --- a/drivers/mtd/maps/alchemy-flash.c +++ b/drivers/mtd/maps/alchemy-flash.c @@ -75,13 +75,6 @@ #define BOARD_FLASH_WIDTH 2 /* 16-bits */ #endif -#ifdef CONFIG_MIPS_HYDROGEN3 -#define BOARD_MAP_NAME "Hydrogen3 Flash" -#define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ -#define BOARD_FLASH_WIDTH 4 /* 32-bits */ -#define USE_LOCAL_ACCESSORS /* why? */ -#endif - #ifdef CONFIG_MIPS_BOSPORUS #define BOARD_MAP_NAME "Bosporus Flash" #define BOARD_FLASH_SIZE 0x01000000 /* 16MB */ @@ -130,13 +123,6 @@ int __init alchemy_mtd_init(void) window_addr = 0x20000000 - BOARD_FLASH_SIZE; window_size = BOARD_FLASH_SIZE; -#ifdef CONFIG_MIPS_MIRAGE_WHY - /* Boot ROM flash bank only; no user bank */ - window_addr = 0x1C000000; - window_size = 0x04000000; - /* USERFS from 0x1C00 0000 to 0x1FC00000 */ - alchemy_partitions[0].size = 0x03C00000; -#endif /* * Static partition definition selection diff --git a/drivers/mtd/maps/intel_vr_nor.c b/drivers/mtd/maps/intel_vr_nor.c new file mode 100644 index 000000000000..1e7814ae212a --- /dev/null +++ b/drivers/mtd/maps/intel_vr_nor.c @@ -0,0 +1,298 @@ +/* + * drivers/mtd/maps/intel_vr_nor.c + * + * An MTD map driver for a NOR flash bank on the Expansion Bus of the Intel + * Vermilion Range chipset. + * + * The Vermilion Range Expansion Bus supports four chip selects, each of which + * has 64MiB of address space. The 2nd BAR of the Expansion Bus PCI Device + * is a 256MiB memory region containing the address spaces for all four of the + * chip selects, with start addresses hardcoded on 64MiB boundaries. + * + * This map driver only supports NOR flash on chip select 0. The buswidth + * (either 8 bits or 16 bits) is determined by reading the Expansion Bus Timing + * and Control Register for Chip Select 0 (EXP_TIMING_CS0). This driver does + * not modify the value in the EXP_TIMING_CS0 register except to enable writing + * and disable boot acceleration. The timing parameters in the register are + * assumed to have been properly initialized by the BIOS. The reset default + * timing parameters are maximally conservative (slow), so access to the flash + * will be slower than it should be if the BIOS has not initialized the timing + * parameters. + * + * Author: Andy Lowe <alowe@mvista.com> + * + * 2006 (c) MontaVista Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/cfi.h> +#include <linux/mtd/flashchip.h> + +#define DRV_NAME "vr_nor" + +struct vr_nor_mtd { + void __iomem *csr_base; + struct map_info map; + struct mtd_info *info; + int nr_parts; + struct pci_dev *dev; +}; + +/* Expansion Bus Configuration and Status Registers are in BAR 0 */ +#define EXP_CSR_MBAR 0 +/* Expansion Bus Memory Window is BAR 1 */ +#define EXP_WIN_MBAR 1 +/* Maximum address space for Chip Select 0 is 64MiB */ +#define CS0_SIZE 0x04000000 +/* Chip Select 0 is at offset 0 in the Memory Window */ +#define CS0_START 0x0 +/* Chip Select 0 Timing Register is at offset 0 in CSR */ +#define EXP_TIMING_CS0 0x00 +#define TIMING_CS_EN (1 << 31) /* Chip Select Enable */ +#define TIMING_BOOT_ACCEL_DIS (1 << 8) /* Boot Acceleration Disable */ +#define TIMING_WR_EN (1 << 1) /* Write Enable */ +#define TIMING_BYTE_EN (1 << 0) /* 8-bit vs 16-bit bus */ +#define TIMING_MASK 0x3FFF0000 + +static void __devexit vr_nor_destroy_partitions(struct vr_nor_mtd *p) +{ + if (p->nr_parts > 0) { +#if defined(CONFIG_MTD_PARTITIONS) || defined(CONFIG_MTD_PARTITIONS_MODULE) + del_mtd_partitions(p->info); +#endif + } else + del_mtd_device(p->info); +} + +static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p) +{ + int err = 0; +#if defined(CONFIG_MTD_PARTITIONS) || defined(CONFIG_MTD_PARTITIONS_MODULE) + struct mtd_partition *parts; + static const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + + /* register the flash bank */ +#if defined(CONFIG_MTD_PARTITIONS) || defined(CONFIG_MTD_PARTITIONS_MODULE) + /* partition the flash bank */ + p->nr_parts = parse_mtd_partitions(p->info, part_probes, &parts, 0); + if (p->nr_parts > 0) + err = add_mtd_partitions(p->info, parts, p->nr_parts); +#endif + if (p->nr_parts <= 0) + err = add_mtd_device(p->info); + + return err; +} + +static void __devexit vr_nor_destroy_mtd_setup(struct vr_nor_mtd *p) +{ + map_destroy(p->info); +} + +static int __devinit vr_nor_mtd_setup(struct vr_nor_mtd *p) +{ + static const char *probe_types[] = + { "cfi_probe", "jedec_probe", NULL }; + const char **type; + + for (type = probe_types; !p->info && *type; type++) + p->info = do_map_probe(*type, &p->map); + if (!p->info) + return -ENODEV; + + p->info->owner = THIS_MODULE; + + return 0; +} + +static void __devexit vr_nor_destroy_maps(struct vr_nor_mtd *p) +{ + unsigned int exp_timing_cs0; + + /* write-protect the flash bank */ + exp_timing_cs0 = readl(p->csr_base + EXP_TIMING_CS0); + exp_timing_cs0 &= ~TIMING_WR_EN; + writel(exp_timing_cs0, p->csr_base + EXP_TIMING_CS0); + + /* unmap the flash window */ + iounmap(p->map.virt); + + /* unmap the csr window */ + iounmap(p->csr_base); +} + +/* + * Initialize the map_info structure and map the flash. + * Returns 0 on success, nonzero otherwise. + */ +static int __devinit vr_nor_init_maps(struct vr_nor_mtd *p) +{ + unsigned long csr_phys, csr_len; + unsigned long win_phys, win_len; + unsigned int exp_timing_cs0; + int err; + + csr_phys = pci_resource_start(p->dev, EXP_CSR_MBAR); + csr_len = pci_resource_len(p->dev, EXP_CSR_MBAR); + win_phys = pci_resource_start(p->dev, EXP_WIN_MBAR); + win_len = pci_resource_len(p->dev, EXP_WIN_MBAR); + + if (!csr_phys || !csr_len || !win_phys || !win_len) + return -ENODEV; + + if (win_len < (CS0_START + CS0_SIZE)) + return -ENXIO; + + p->csr_base = ioremap_nocache(csr_phys, csr_len); + if (!p->csr_base) + return -ENOMEM; + + exp_timing_cs0 = readl(p->csr_base + EXP_TIMING_CS0); + if (!(exp_timing_cs0 & TIMING_CS_EN)) { + dev_warn(&p->dev->dev, "Expansion Bus Chip Select 0 " + "is disabled.\n"); + err = -ENODEV; + goto release; + } + if ((exp_timing_cs0 & TIMING_MASK) == TIMING_MASK) { + dev_warn(&p->dev->dev, "Expansion Bus Chip Select 0 " + "is configured for maximally slow access times.\n"); + } + p->map.name = DRV_NAME; + p->map.bankwidth = (exp_timing_cs0 & TIMING_BYTE_EN) ? 1 : 2; + p->map.phys = win_phys + CS0_START; + p->map.size = CS0_SIZE; + p->map.virt = ioremap_nocache(p->map.phys, p->map.size); + if (!p->map.virt) { + err = -ENOMEM; + goto release; + } + simple_map_init(&p->map); + + /* Enable writes to flash bank */ + exp_timing_cs0 |= TIMING_BOOT_ACCEL_DIS | TIMING_WR_EN; + writel(exp_timing_cs0, p->csr_base + EXP_TIMING_CS0); + + return 0; + + release: + iounmap(p->csr_base); + return err; +} + +static struct pci_device_id vr_nor_pci_ids[] = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x500D)}, + {0,} +}; + +static void __devexit vr_nor_pci_remove(struct pci_dev *dev) +{ + struct vr_nor_mtd *p = pci_get_drvdata(dev); + + pci_set_drvdata(dev, NULL); + vr_nor_destroy_partitions(p); + vr_nor_destroy_mtd_setup(p); + vr_nor_destroy_maps(p); + kfree(p); + pci_release_regions(dev); + pci_disable_device(dev); +} + +static int __devinit +vr_nor_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct vr_nor_mtd *p = NULL; + unsigned int exp_timing_cs0; + int err; + + err = pci_enable_device(dev); + if (err) + goto out; + + err = pci_request_regions(dev, DRV_NAME); + if (err) + goto disable_dev; + + p = kzalloc(sizeof(*p), GFP_KERNEL); + err = -ENOMEM; + if (!p) + goto release; + + p->dev = dev; + + err = vr_nor_init_maps(p); + if (err) + goto release; + + err = vr_nor_mtd_setup(p); + if (err) + goto destroy_maps; + + err = vr_nor_init_partitions(p); + if (err) + goto destroy_mtd_setup; + + pci_set_drvdata(dev, p); + + return 0; + + destroy_mtd_setup: + map_destroy(p->info); + + destroy_maps: + /* write-protect the flash bank */ + exp_timing_cs0 = readl(p->csr_base + EXP_TIMING_CS0); + exp_timing_cs0 &= ~TIMING_WR_EN; + writel(exp_timing_cs0, p->csr_base + EXP_TIMING_CS0); + + /* unmap the flash window */ + iounmap(p->map.virt); + + /* unmap the csr window */ + iounmap(p->csr_base); + + release: + kfree(p); + pci_release_regions(dev); + + disable_dev: + pci_disable_device(dev); + + out: + return err; +} + +static struct pci_driver vr_nor_pci_driver = { + .name = DRV_NAME, + .probe = vr_nor_pci_probe, + .remove = __devexit_p(vr_nor_pci_remove), + .id_table = vr_nor_pci_ids, +}; + +static int __init vr_nor_mtd_init(void) +{ + return pci_register_driver(&vr_nor_pci_driver); +} + +static void __exit vr_nor_mtd_exit(void) +{ + pci_unregister_driver(&vr_nor_pci_driver); +} + +module_init(vr_nor_mtd_init); +module_exit(vr_nor_mtd_exit); + +MODULE_AUTHOR("Andy Lowe"); +MODULE_DESCRIPTION("MTD map driver for NOR flash on Intel Vermilion Range"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, vr_nor_pci_ids); diff --git a/drivers/mtd/maps/lubbock-flash.c b/drivers/mtd/maps/lubbock-flash.c deleted file mode 100644 index e8560683b973..000000000000 --- a/drivers/mtd/maps/lubbock-flash.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * $Id: lubbock-flash.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $ - * - * Map driver for the Lubbock developer platform. - * - * Author: Nicolas Pitre - * Copyright: (C) 2001 MontaVista Software Inc. - * - * 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/types.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> -#include <asm/hardware.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/lubbock.h> -#include <asm/cacheflush.h> - -#define ROM_ADDR 0x00000000 -#define FLASH_ADDR 0x04000000 - -#define WINDOW_SIZE 64*1024*1024 - -static void lubbock_map_inval_cache(struct map_info *map, unsigned long from, ssize_t len) -{ - flush_ioremap_region(map->phys, map->cached, from, len); -} - -static struct map_info lubbock_maps[2] = { { - .size = WINDOW_SIZE, - .phys = 0x00000000, - .inval_cache = lubbock_map_inval_cache, -}, { - .size = WINDOW_SIZE, - .phys = 0x04000000, - .inval_cache = lubbock_map_inval_cache, -} }; - -static struct mtd_partition lubbock_partitions[] = { - { - .name = "Bootloader", - .size = 0x00040000, - .offset = 0, - .mask_flags = MTD_WRITEABLE /* force read-only */ - },{ - .name = "Kernel", - .size = 0x00100000, - .offset = 0x00040000, - },{ - .name = "Filesystem", - .size = MTDPART_SIZ_FULL, - .offset = 0x00140000 - } -}; - -static struct mtd_info *mymtds[2]; -static struct mtd_partition *parsed_parts[2]; -static int nr_parsed_parts[2]; - -static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; - -static int __init init_lubbock(void) -{ - int flashboot = (LUB_CONF_SWITCHES & 1); - int ret = 0, i; - - lubbock_maps[0].bankwidth = lubbock_maps[1].bankwidth = - (BOOT_DEF & 1) ? 2 : 4; - - /* Compensate for the nROMBT switch which swaps the flash banks */ - printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", - flashboot?"Flash":"ROM", flashboot); - - lubbock_maps[flashboot^1].name = "Lubbock Application Flash"; - lubbock_maps[flashboot].name = "Lubbock Boot ROM"; - - for (i = 0; i < 2; i++) { - lubbock_maps[i].virt = ioremap(lubbock_maps[i].phys, WINDOW_SIZE); - if (!lubbock_maps[i].virt) { - printk(KERN_WARNING "Failed to ioremap %s\n", lubbock_maps[i].name); - if (!ret) - ret = -ENOMEM; - continue; - } - lubbock_maps[i].cached = ioremap_cached(lubbock_maps[i].phys, WINDOW_SIZE); - if (!lubbock_maps[i].cached) - printk(KERN_WARNING "Failed to ioremap cached %s\n", lubbock_maps[i].name); - simple_map_init(&lubbock_maps[i]); - - printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n", - lubbock_maps[i].name, lubbock_maps[i].phys, - lubbock_maps[i].bankwidth * 8); - - mymtds[i] = do_map_probe("cfi_probe", &lubbock_maps[i]); - - if (!mymtds[i]) { - iounmap((void *)lubbock_maps[i].virt); - if (lubbock_maps[i].cached) - iounmap(lubbock_maps[i].cached); - if (!ret) - ret = -EIO; - continue; - } - mymtds[i]->owner = THIS_MODULE; - - ret = parse_mtd_partitions(mymtds[i], probes, - &parsed_parts[i], 0); - - if (ret > 0) - nr_parsed_parts[i] = ret; - } - - if (!mymtds[0] && !mymtds[1]) - return ret; - - for (i = 0; i < 2; i++) { - if (!mymtds[i]) { - printk(KERN_WARNING "%s is absent. Skipping\n", lubbock_maps[i].name); - } else if (nr_parsed_parts[i]) { - add_mtd_partitions(mymtds[i], parsed_parts[i], nr_parsed_parts[i]); - } else if (!i) { - printk("Using static partitions on %s\n", lubbock_maps[i].name); - add_mtd_partitions(mymtds[i], lubbock_partitions, ARRAY_SIZE(lubbock_partitions)); - } else { - printk("Registering %s as whole device\n", lubbock_maps[i].name); - add_mtd_device(mymtds[i]); - } - } - return 0; -} - -static void __exit cleanup_lubbock(void) -{ - int i; - for (i = 0; i < 2; i++) { - if (!mymtds[i]) - continue; - - if (nr_parsed_parts[i] || !i) - del_mtd_partitions(mymtds[i]); - else - del_mtd_device(mymtds[i]); - - map_destroy(mymtds[i]); - iounmap((void *)lubbock_maps[i].virt); - if (lubbock_maps[i].cached) - iounmap(lubbock_maps[i].cached); - - kfree(parsed_parts[i]); - } -} - -module_init(init_lubbock); -module_exit(cleanup_lubbock); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); -MODULE_DESCRIPTION("MTD map driver for Intel Lubbock"); diff --git a/drivers/mtd/maps/mainstone-flash.c b/drivers/mtd/maps/mainstone-flash.c deleted file mode 100644 index d76487d82dcd..000000000000 --- a/drivers/mtd/maps/mainstone-flash.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * $Id: $ - * - * Map driver for the Mainstone developer platform. - * - * Author: Nicolas Pitre - * Copyright: (C) 2001 MontaVista Software Inc. - * - * 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/types.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> -#include <asm/hardware.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/mainstone.h> -#include <asm/cacheflush.h> - - -#define ROM_ADDR 0x00000000 -#define FLASH_ADDR 0x04000000 - -#define WINDOW_SIZE 0x04000000 - -static void mainstone_map_inval_cache(struct map_info *map, unsigned long from, - ssize_t len) -{ - flush_ioremap_region(map->phys, map->cached, from, len); -} - -static struct map_info mainstone_maps[2] = { { - .size = WINDOW_SIZE, - .phys = PXA_CS0_PHYS, - .inval_cache = mainstone_map_inval_cache, -}, { - .size = WINDOW_SIZE, - .phys = PXA_CS1_PHYS, - .inval_cache = mainstone_map_inval_cache, -} }; - -static struct mtd_partition mainstone_partitions[] = { - { - .name = "Bootloader", - .size = 0x00040000, - .offset = 0, - .mask_flags = MTD_WRITEABLE /* force read-only */ - },{ - .name = "Kernel", - .size = 0x00400000, - .offset = 0x00040000, - },{ - .name = "Filesystem", - .size = MTDPART_SIZ_FULL, - .offset = 0x00440000 - } -}; - -static struct mtd_info *mymtds[2]; -static struct mtd_partition *parsed_parts[2]; -static int nr_parsed_parts[2]; - -static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; - -static int __init init_mainstone(void) -{ - int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */ - int ret = 0, i; - - mainstone_maps[0].bankwidth = (BOOT_DEF & 1) ? 2 : 4; - mainstone_maps[1].bankwidth = 4; - - /* Compensate for SW7 which swaps the flash banks */ - mainstone_maps[SW7].name = "processor flash"; - mainstone_maps[SW7 ^ 1].name = "main board flash"; - - printk(KERN_NOTICE "Mainstone configured to boot from %s\n", - mainstone_maps[0].name); - - for (i = 0; i < 2; i++) { - mainstone_maps[i].virt = ioremap(mainstone_maps[i].phys, - WINDOW_SIZE); - if (!mainstone_maps[i].virt) { - printk(KERN_WARNING "Failed to ioremap %s\n", - mainstone_maps[i].name); - if (!ret) - ret = -ENOMEM; - continue; - } - mainstone_maps[i].cached = - ioremap_cached(mainstone_maps[i].phys, WINDOW_SIZE); - if (!mainstone_maps[i].cached) - printk(KERN_WARNING "Failed to ioremap cached %s\n", - mainstone_maps[i].name); - simple_map_init(&mainstone_maps[i]); - - printk(KERN_NOTICE - "Probing %s at physical address 0x%08lx" - " (%d-bit bankwidth)\n", - mainstone_maps[i].name, mainstone_maps[i].phys, - mainstone_maps[i].bankwidth * 8); - - mymtds[i] = do_map_probe("cfi_probe", &mainstone_maps[i]); - - if (!mymtds[i]) { - iounmap((void *)mainstone_maps[i].virt); - if (mainstone_maps[i].cached) - iounmap(mainstone_maps[i].cached); - if (!ret) - ret = -EIO; - continue; - } - mymtds[i]->owner = THIS_MODULE; - - ret = parse_mtd_partitions(mymtds[i], probes, - &parsed_parts[i], 0); - - if (ret > 0) - nr_parsed_parts[i] = ret; - } - - if (!mymtds[0] && !mymtds[1]) - return ret; - - for (i = 0; i < 2; i++) { - if (!mymtds[i]) { - printk(KERN_WARNING "%s is absent. Skipping\n", - mainstone_maps[i].name); - } else if (nr_parsed_parts[i]) { - add_mtd_partitions(mymtds[i], parsed_parts[i], - nr_parsed_parts[i]); - } else if (!i) { - printk("Using static partitions on %s\n", - mainstone_maps[i].name); - add_mtd_partitions(mymtds[i], mainstone_partitions, - ARRAY_SIZE(mainstone_partitions)); - } else { - printk("Registering %s as whole device\n", - mainstone_maps[i].name); - add_mtd_device(mymtds[i]); - } - } - return 0; -} - -static void __exit cleanup_mainstone(void) -{ - int i; - for (i = 0; i < 2; i++) { - if (!mymtds[i]) - continue; - - if (nr_parsed_parts[i] || !i) - del_mtd_partitions(mymtds[i]); - else - del_mtd_device(mymtds[i]); - - map_destroy(mymtds[i]); - iounmap((void *)mainstone_maps[i].virt); - if (mainstone_maps[i].cached) - iounmap(mainstone_maps[i].cached); - kfree(parsed_parts[i]); - } -} - -module_init(init_mainstone); -module_exit(cleanup_mainstone); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); -MODULE_DESCRIPTION("MTD map driver for Intel Mainstone"); diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c index 7b96cd02f82b..0c9b305a72e0 100644 --- a/drivers/mtd/maps/nettel.c +++ b/drivers/mtd/maps/nettel.c @@ -158,68 +158,11 @@ static struct notifier_block nettel_notifier_block = { nettel_reboot_notifier, NULL, 0 }; -/* - * Erase the configuration file system. - * Used to support the software reset button. - */ -static void nettel_erasecallback(struct erase_info *done) -{ - wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; - wake_up(wait_q); -} - -static struct erase_info nettel_erase; - -int nettel_eraseconfig(void) -{ - struct mtd_info *mtd; - DECLARE_WAITQUEUE(wait, current); - wait_queue_head_t wait_q; - int ret; - - init_waitqueue_head(&wait_q); - mtd = get_mtd_device(NULL, 2); - if (!IS_ERR(mtd)) { - nettel_erase.mtd = mtd; - nettel_erase.callback = nettel_erasecallback; - nettel_erase.callback = NULL; - nettel_erase.addr = 0; - nettel_erase.len = mtd->size; - nettel_erase.priv = (u_long) &wait_q; - nettel_erase.priv = 0; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&wait_q, &wait); - - ret = mtd->erase(mtd, &nettel_erase); - if (ret) { - set_current_state(TASK_RUNNING); - remove_wait_queue(&wait_q, &wait); - put_mtd_device(mtd); - return(ret); - } - - schedule(); /* Wait for erase to finish. */ - remove_wait_queue(&wait_q, &wait); - - put_mtd_device(mtd); - } - - return(0); -} - -#else - -int nettel_eraseconfig(void) -{ - return(0); -} - #endif /****************************************************************************/ -int __init nettel_init(void) +static int __init nettel_init(void) { volatile unsigned long *amdpar; unsigned long amdaddr, maxsize; @@ -421,10 +364,6 @@ int __init nettel_init(void) intel_mtd->owner = THIS_MODULE; -#ifndef CONFIG_BLK_DEV_INITRD - ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, 1); -#endif - num_intel_partitions = sizeof(nettel_intel_partitions) / sizeof(nettel_intel_partitions[0]); @@ -477,7 +416,7 @@ out_unmap2: /****************************************************************************/ -void __exit nettel_cleanup(void) +static void __exit nettel_cleanup(void) { #ifdef CONFIG_MTD_CFI_INTELEXT unregister_reboot_notifier(&nettel_notifier_block); diff --git a/drivers/mtd/maps/ocelot.c b/drivers/mtd/maps/ocelot.c deleted file mode 100644 index 6977963d7897..000000000000 --- a/drivers/mtd/maps/ocelot.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * $Id: ocelot.c,v 1.17 2005/11/07 11:14:27 gleixner Exp $ - * - * Flash on Momenco Ocelot - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <asm/io.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#define OCELOT_PLD 0x2c000000 -#define FLASH_WINDOW_ADDR 0x2fc00000 -#define FLASH_WINDOW_SIZE 0x00080000 -#define FLASH_BUSWIDTH 1 -#define NVRAM_WINDOW_ADDR 0x2c800000 -#define NVRAM_WINDOW_SIZE 0x00007FF0 -#define NVRAM_BUSWIDTH 1 - -static unsigned int cacheflush = 0; - -static struct mtd_info *flash_mtd; -static struct mtd_info *nvram_mtd; - -static void ocelot_ram_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) -{ - struct map_info *map = mtd->priv; - size_t done = 0; - - /* If we use memcpy, it does word-wide writes. Even though we told the - GT64120A that it's an 8-bit wide region, word-wide writes don't work. - We end up just writing the first byte of the four to all four bytes. - So we have this loop instead */ - *retlen = len; - while(len) { - __raw_writeb(*(unsigned char *) from, map->virt + to); - from++; - to++; - len--; - } -} - -static struct mtd_partition *parsed_parts; - -struct map_info ocelot_flash_map = { - .name = "Ocelot boot flash", - .size = FLASH_WINDOW_SIZE, - .bankwidth = FLASH_BUSWIDTH, - .phys = FLASH_WINDOW_ADDR, -}; - -struct map_info ocelot_nvram_map = { - .name = "Ocelot NVRAM", - .size = NVRAM_WINDOW_SIZE, - .bankwidth = NVRAM_BUSWIDTH, - .phys = NVRAM_WINDOW_ADDR, -}; - -static const char *probes[] = { "RedBoot", NULL }; - -static int __init init_ocelot_maps(void) -{ - void *pld; - int nr_parts; - unsigned char brd_status; - - printk(KERN_INFO "Momenco Ocelot MTD mappings: Flash 0x%x at 0x%x, NVRAM 0x%x at 0x%x\n", - FLASH_WINDOW_SIZE, FLASH_WINDOW_ADDR, NVRAM_WINDOW_SIZE, NVRAM_WINDOW_ADDR); - - /* First check whether the flash jumper is present */ - pld = ioremap(OCELOT_PLD, 0x10); - if (!pld) { - printk(KERN_NOTICE "Failed to ioremap Ocelot PLD\n"); - return -EIO; - } - brd_status = readb(pld+4); - iounmap(pld); - - /* Now ioremap the NVRAM space */ - ocelot_nvram_map.virt = ioremap_nocache(NVRAM_WINDOW_ADDR, NVRAM_WINDOW_SIZE); - if (!ocelot_nvram_map.virt) { - printk(KERN_NOTICE "Failed to ioremap Ocelot NVRAM space\n"); - return -EIO; - } - - simple_map_init(&ocelot_nvram_map); - - /* And do the RAM probe on it to get an MTD device */ - nvram_mtd = do_map_probe("map_ram", &ocelot_nvram_map); - if (!nvram_mtd) { - printk("NVRAM probe failed\n"); - goto fail_1; - } - nvram_mtd->owner = THIS_MODULE; - nvram_mtd->erasesize = 16; - /* Override the write() method */ - nvram_mtd->write = ocelot_ram_write; - - /* Now map the flash space */ - ocelot_flash_map.virt = ioremap_nocache(FLASH_WINDOW_ADDR, FLASH_WINDOW_SIZE); - if (!ocelot_flash_map.virt) { - printk(KERN_NOTICE "Failed to ioremap Ocelot flash space\n"); - goto fail_2; - } - /* Now the cached version */ - ocelot_flash_map.cached = (unsigned long)__ioremap(FLASH_WINDOW_ADDR, FLASH_WINDOW_SIZE, 0); - - simple_map_init(&ocelot_flash_map); - - /* Only probe for flash if the write jumper is present */ - if (brd_status & 0x40) { - flash_mtd = do_map_probe("jedec", &ocelot_flash_map); - } else { - printk(KERN_NOTICE "Ocelot flash write jumper not present. Treating as ROM\n"); - } - /* If that failed or the jumper's absent, pretend it's ROM */ - if (!flash_mtd) { - flash_mtd = do_map_probe("map_rom", &ocelot_flash_map); - /* If we're treating it as ROM, set the erase size */ - if (flash_mtd) - flash_mtd->erasesize = 0x10000; - } - if (!flash_mtd) - goto fail3; - - add_mtd_device(nvram_mtd); - - flash_mtd->owner = THIS_MODULE; - nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_parts, 0); - - if (nr_parts > 0) - add_mtd_partitions(flash_mtd, parsed_parts, nr_parts); - else - add_mtd_device(flash_mtd); - - return 0; - - fail3: - iounmap((void *)ocelot_flash_map.virt); - if (ocelot_flash_map.cached) - iounmap((void *)ocelot_flash_map.cached); - fail_2: - map_destroy(nvram_mtd); - fail_1: - iounmap((void *)ocelot_nvram_map.virt); - - return -ENXIO; -} - -static void __exit cleanup_ocelot_maps(void) -{ - del_mtd_device(nvram_mtd); - map_destroy(nvram_mtd); - iounmap((void *)ocelot_nvram_map.virt); - - if (parsed_parts) - del_mtd_partitions(flash_mtd); - else - del_mtd_device(flash_mtd); - map_destroy(flash_mtd); - iounmap((void *)ocelot_flash_map.virt); - if (ocelot_flash_map.cached) - iounmap((void *)ocelot_flash_map.cached); -} - -module_init(init_ocelot_maps); -module_exit(cleanup_ocelot_maps); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.com>"); -MODULE_DESCRIPTION("MTD map driver for Momenco Ocelot board"); diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index cf75a566442e..aeed9ea79714 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -232,7 +232,6 @@ static int __devinit of_flash_probe(struct of_device *dev, info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) goto err_out; - memset(info, 0, sizeof(*info)); dev_set_drvdata(&dev->dev, info); diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c index 7e0377ec1c40..02bde8c982ec 100644 --- a/drivers/mtd/maps/pmcmsp-flash.c +++ b/drivers/mtd/maps/pmcmsp-flash.c @@ -73,13 +73,16 @@ int __init init_msp_flash(void) return -ENXIO; printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt); - msp_flash = (struct mtd_info **)kmalloc( - fcnt * sizeof(struct map_info *), GFP_KERNEL); - msp_parts = (struct mtd_partition **)kmalloc( - fcnt * sizeof(struct mtd_partition *), GFP_KERNEL); - msp_maps = (struct map_info *)kmalloc( - fcnt * sizeof(struct mtd_info), GFP_KERNEL); - memset(msp_maps, 0, fcnt * sizeof(struct mtd_info)); + + msp_flash = kmalloc(fcnt * sizeof(struct map_info *), GFP_KERNEL); + msp_parts = kmalloc(fcnt * sizeof(struct mtd_partition *), GFP_KERNEL); + msp_maps = kcalloc(fcnt, sizeof(struct mtd_info), GFP_KERNEL); + if (!msp_flash || !msp_parts || !msp_maps) { + kfree(msp_maps); + kfree(msp_parts); + kfree(msp_flash); + return -ENOMEM; + } /* loop over the flash devices, initializing each */ for (i = 0; i < fcnt; i++) { @@ -95,9 +98,8 @@ int __init init_msp_flash(void) continue; } - msp_parts[i] = (struct mtd_partition *)kmalloc( - pcnt * sizeof(struct mtd_partition), GFP_KERNEL); - memset(msp_parts[i], 0, pcnt * sizeof(struct mtd_partition)); + msp_parts[i] = kcalloc(pcnt, sizeof(struct mtd_partition), + GFP_KERNEL); /* now initialize the devices proper */ flash_name[5] = '0' + i; diff --git a/drivers/mtd/maps/pmcmsp-ramroot.c b/drivers/mtd/maps/pmcmsp-ramroot.c index 18049bceba8d..30de5c0c09a9 100644 --- a/drivers/mtd/maps/pmcmsp-ramroot.c +++ b/drivers/mtd/maps/pmcmsp-ramroot.c @@ -79,7 +79,6 @@ static int __init init_rrmap(void) rr_mtd->owner = THIS_MODULE; add_mtd_device(rr_mtd); - ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, rr_mtd->index); return 0; } diff --git a/drivers/mtd/maps/pq2fads.c b/drivers/mtd/maps/pq2fads.c deleted file mode 100644 index fb78d87cc130..000000000000 --- a/drivers/mtd/maps/pq2fads.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * drivers/mtd/maps/pq2fads.c - * - * Mapping for the flash SIMM on 8272ADS and PQ2FADS board - * - * Author: Vitaly Bordug <vbordug@ru.mvista.com> - * - * 2005 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <asm/io.h> -#include <asm/ppcboot.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> -#include <linux/mtd/physmap.h> - -/* - NOTE: bank width and interleave relative to the installed flash - should have been chosen within MTD_CFI_GEOMETRY options. - */ -#define PQ2FADS_BANK_WIDTH 4 - -static struct mtd_partition pq2fads_partitions[] = { - { -#ifdef CONFIG_ADS8272 - .name = "HRCW", - .size = 0x40000, - .offset = 0, - .mask_flags = MTD_WRITEABLE, /* force read-only */ - }, { - .name = "User FS", - .size = 0x5c0000, - .offset = 0x40000, -#else - .name = "User FS", - .size = 0x600000, - .offset = 0, -#endif - }, { - .name = "uImage", - .size = 0x100000, - .offset = 0x600000, - .mask_flags = MTD_WRITEABLE, /* force read-only */ - }, { - .name = "bootloader", - .size = 0x40000, - .offset = 0x700000, - .mask_flags = MTD_WRITEABLE, /* force read-only */ - }, { - .name = "bootloader env", - .size = 0x40000, - .offset = 0x740000, - .mask_flags = MTD_WRITEABLE, /* force read-only */ - } -}; - - -/* pointer to MPC885ADS board info data */ -extern unsigned char __res[]; - -static int __init init_pq2fads_mtd(void) -{ - bd_t *bd = (bd_t *)__res; - physmap_configure(bd->bi_flashstart, bd->bi_flashsize, PQ2FADS_BANK_WIDTH, NULL); - - physmap_set_partitions(pq2fads_partitions, - sizeof (pq2fads_partitions) / - sizeof (pq2fads_partitions[0])); - return 0; -} - -static void __exit cleanup_pq2fads_mtd(void) -{ -} - -module_init(init_pq2fads_mtd); -module_exit(cleanup_pq2fads_mtd); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("MTD map and partitions for MPC8272ADS boards"); diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c new file mode 100644 index 000000000000..cb933ac475d5 --- /dev/null +++ b/drivers/mtd/maps/pxa2xx-flash.c @@ -0,0 +1,200 @@ +/* + * Map driver for Intel XScale PXA2xx platforms. + * + * Author: Nicolas Pitre + * Copyright: (C) 2001 MontaVista Software Inc. + * + * 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/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> + +#include <asm/io.h> +#include <asm/hardware.h> + +#include <asm/mach/flash.h> + +static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from, + ssize_t len) +{ + consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE); +} + +struct pxa2xx_flash_info { + struct mtd_partition *parts; + int nr_parts; + struct mtd_info *mtd; + struct map_info map; +}; + + +static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; + + +static int __init pxa2xx_flash_probe(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct flash_platform_data *flash = pdev->dev.platform_data; + struct pxa2xx_flash_info *info; + struct mtd_partition *parts; + struct resource *res; + int ret = 0; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENODEV; + + info = kmalloc(sizeof(struct pxa2xx_flash_info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + memset(info, 0, sizeof(struct pxa2xx_flash_info)); + info->map.name = (char *) flash->name; + info->map.bankwidth = flash->width; + info->map.phys = res->start; + info->map.size = res->end - res->start + 1; + info->parts = flash->parts; + info->nr_parts = flash->nr_parts; + + info->map.virt = ioremap(info->map.phys, info->map.size); + if (!info->map.virt) { + printk(KERN_WARNING "Failed to ioremap %s\n", + info->map.name); + return -ENOMEM; + } + info->map.cached = + ioremap_cached(info->map.phys, info->map.size); + if (!info->map.cached) + printk(KERN_WARNING "Failed to ioremap cached %s\n", + info->map.name); + info->map.inval_cache = pxa2xx_map_inval_cache; + simple_map_init(&info->map); + + printk(KERN_NOTICE + "Probing %s at physical address 0x%08lx" + " (%d-bit bankwidth)\n", + info->map.name, (unsigned long)info->map.phys, + info->map.bankwidth * 8); + + info->mtd = do_map_probe(flash->map_name, &info->map); + + if (!info->mtd) { + iounmap((void *)info->map.virt); + if (info->map.cached) + iounmap(info->map.cached); + return -EIO; + } + info->mtd->owner = THIS_MODULE; + +#ifdef CONFIG_MTD_PARTITIONS + ret = parse_mtd_partitions(info->mtd, probes, &parts, 0); + + if (ret > 0) { + info->nr_parts = ret; + info->parts = parts; + } +#endif + + if (info->nr_parts) { + add_mtd_partitions(info->mtd, info->parts, + info->nr_parts); + } else { + printk("Registering %s as whole device\n", + info->map.name); + add_mtd_device(info->mtd); + } + + dev_set_drvdata(dev, info); + return 0; +} + +static int __exit pxa2xx_flash_remove(struct device *dev) +{ + struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + + dev_set_drvdata(dev, NULL); + +#ifdef CONFIG_MTD_PARTITIONS + if (info->nr_parts) + del_mtd_partitions(info->mtd); + else +#endif + del_mtd_device(info->mtd); + + map_destroy(info->mtd); + iounmap(info->map.virt); + if (info->map.cached) + iounmap(info->map.cached); + kfree(info->parts); + kfree(info); + return 0; +} + +#ifdef CONFIG_PM +static int pxa2xx_flash_suspend(struct device *dev, pm_message_t state) +{ + struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + int ret = 0; + + if (info->mtd && info->mtd->suspend) + ret = info->mtd->suspend(info->mtd); + return ret; +} + +static int pxa2xx_flash_resume(struct device *dev) +{ + struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + + if (info->mtd && info->mtd->resume) + info->mtd->resume(info->mtd); + return 0; +} +static void pxa2xx_flash_shutdown(struct device *dev) +{ + struct pxa2xx_flash_info *info = dev_get_drvdata(dev); + + if (info && info->mtd->suspend(info->mtd) == 0) + info->mtd->resume(info->mtd); +} +#else +#define pxa2xx_flash_suspend NULL +#define pxa2xx_flash_resume NULL +#define pxa2xx_flash_shutdown NULL +#endif + +static struct device_driver pxa2xx_flash_driver = { + .name = "pxa2xx-flash", + .bus = &platform_bus_type, + .probe = pxa2xx_flash_probe, + .remove = __exit_p(pxa2xx_flash_remove), + .suspend = pxa2xx_flash_suspend, + .resume = pxa2xx_flash_resume, + .shutdown = pxa2xx_flash_shutdown, +}; + +static int __init init_pxa2xx_flash(void) +{ + return driver_register(&pxa2xx_flash_driver); +} + +static void __exit cleanup_pxa2xx_flash(void) +{ + driver_unregister(&pxa2xx_flash_driver); +} + +module_init(init_pxa2xx_flash); +module_exit(cleanup_pxa2xx_flash); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); +MODULE_DESCRIPTION("MTD map driver for Intel XScale PXA2xx"); diff --git a/drivers/mtd/maps/tqm834x.c b/drivers/mtd/maps/tqm834x.c deleted file mode 100644 index 9adc970e55e6..000000000000 --- a/drivers/mtd/maps/tqm834x.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * drivers/mtd/maps/tqm834x.c - * - * MTD mapping driver for TQM834x boards - * - * Copyright 2005 Wolfgang Denk, DENX Software Engineering, <wd@denx.de>. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - * - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <asm/io.h> -#include <asm/ppcboot.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#define FLASH_BANK_MAX 2 - -extern unsigned char __res[]; - -/* trivial struct to describe partition information */ -struct mtd_part_def -{ - int nums; - unsigned char *type; - struct mtd_partition* mtd_part; -}; - -static struct mtd_info* mtd_banks[FLASH_BANK_MAX]; -static struct map_info* map_banks[FLASH_BANK_MAX]; -static struct mtd_part_def part_banks[FLASH_BANK_MAX]; - -static unsigned long num_banks; -static unsigned long start_scan_addr; - -#ifdef CONFIG_MTD_PARTITIONS -/* - * The following defines the partition layout of TQM834x boards. - * - * See include/linux/mtd/partitions.h for definition of the - * mtd_partition structure. - * - * Assume minimal initial size of 4 MiB per bank, will be updated - * later in init_tqm834x_mtd() routine. - */ - -/* Partition definition for the first flash bank which is always present. */ -static struct mtd_partition tqm834x_partitions_bank1[] = { - { - .name = "u-boot", /* u-boot firmware */ - .offset = 0x00000000, - .size = 0x00040000, /* 256 KiB */ - /*mask_flags: MTD_WRITEABLE, * force read-only */ - }, - { - .name = "env", /* u-boot environment */ - .offset = 0x00040000, - .size = 0x00020000, /* 128 KiB */ - /*mask_flags: MTD_WRITEABLE, * force read-only */ - }, - { - .name = "kernel", /* linux kernel image */ - .offset = 0x00060000, - .size = 0x00100000, /* 1 MiB */ - /*mask_flags: MTD_WRITEABLE, * force read-only */ - }, - { - .name = "initrd", /* ramdisk image */ - .offset = 0x00160000, - .size = 0x00200000, /* 2 MiB */ - }, - { - .name = "user", /* user data */ - .offset = 0x00360000, - .size = 0x000a0000, /* remaining space */ - /* NOTE: this parttion size is re-calcated in */ - /* init_tqm834x_mtd() to cover actual remaining space. */ - }, -}; - -/* Partition definition for the second flash bank which may be present on some - * TQM834x boards. - */ -static struct mtd_partition tqm834x_partitions_bank2[] = { - { - .name = "jffs2", /* jffs2 filesystem */ - .offset = 0x00000000, - .size = 0x00400000, /* whole device */ - /* NOTE: this parttion size is re-calcated in */ - /* init_tqm834x_mtd() to cover actual device size. */ - }, -}; - -#endif /* CONFIG_MTD_PARTITIONS */ - -static int __init init_tqm834x_mtd(void) -{ - int idx = 0, ret = 0; - unsigned long flash_addr, flash_size, mtd_size = 0; - - /* pointer to TQM834x board info data */ - bd_t *bd = (bd_t *)__res; -#ifdef CONFIG_MTD_CMDLINE_PARTS - int n; - char mtdid[4]; - const char *part_probes[] = { "cmdlinepart", NULL }; -#endif - - flash_addr = bd->bi_flashstart; - flash_size = bd->bi_flashsize; - - /* request maximum flash size address space */ - start_scan_addr = (unsigned long)ioremap(flash_addr, flash_size); - if (!start_scan_addr) { - printk("%s: Failed to ioremap address: 0x%lx\n", - __FUNCTION__, flash_addr); - return -EIO; - } - - for(idx = 0 ; idx < FLASH_BANK_MAX ; idx++) { - if (mtd_size >= flash_size) - break; - - pr_debug("%s: chip probing count %d\n", __FUNCTION__, idx); - - map_banks[idx] = kzalloc(sizeof(struct map_info), GFP_KERNEL); - if (map_banks[idx] == NULL) { - ret = -ENOMEM; - goto error_mem; - } - map_banks[idx]->name = kzalloc(16, GFP_KERNEL); - if (map_banks[idx]->name == NULL) { - ret = -ENOMEM; - goto error_mem; - } - - sprintf(map_banks[idx]->name, "TQM834x-%d", idx); - map_banks[idx]->size = flash_size; - map_banks[idx]->bankwidth = 4; - - simple_map_init(map_banks[idx]); - - map_banks[idx]->virt = (void __iomem *) - (start_scan_addr + ((idx > 0) ? - (mtd_banks[idx-1] ? mtd_banks[idx-1]->size : 0) : 0)); - map_banks[idx]->phys = - flash_addr + ((idx > 0) ? - (mtd_banks[idx-1] ? mtd_banks[idx-1]->size : 0) : 0); - - /* start to probe flash chips */ - mtd_banks[idx] = do_map_probe("cfi_probe", map_banks[idx]); - if (mtd_banks[idx]) { - mtd_banks[idx]->owner = THIS_MODULE; - mtd_size += mtd_banks[idx]->size; - num_banks++; - pr_debug("%s: bank %ld, name: %s, size: %d bytes \n", - __FUNCTION__, num_banks, - mtd_banks[idx]->name, mtd_banks[idx]->size); - } - } - - /* no supported flash chips found */ - if (!num_banks) { - printk("TQM834x: No supported flash chips found!\n"); - ret = -ENXIO; - goto error_mem; - } - -#ifdef CONFIG_MTD_PARTITIONS - /* - * Select static partition definitions - */ - n = ARRAY_SIZE(tqm834x_partitions_bank1); - part_banks[0].mtd_part = tqm834x_partitions_bank1; - part_banks[0].type = "static image bank1"; - part_banks[0].nums = n; - - /* update last partition size to cover actual remaining space */ - tqm834x_partitions_bank1[n - 1].size = - mtd_banks[0]->size - - tqm834x_partitions_bank1[n - 1].offset; - - /* check if we have second bank? */ - if (num_banks == 2) { - n = ARRAY_SIZE(tqm834x_partitions_bank2); - part_banks[1].mtd_part = tqm834x_partitions_bank2; - part_banks[1].type = "static image bank2"; - part_banks[1].nums = n; - - /* update last partition size to cover actual remaining space */ - tqm834x_partitions_bank2[n - 1].size = - mtd_banks[1]->size - - tqm834x_partitions_bank2[n - 1].offset; - } - - for(idx = 0; idx < num_banks ; idx++) { -#ifdef CONFIG_MTD_CMDLINE_PARTS - sprintf(mtdid, "%d", idx); - n = parse_mtd_partitions(mtd_banks[idx], - part_probes, - &part_banks[idx].mtd_part, - 0); - pr_debug("%s: %d command line partitions on bank %s\n", - __FUNCTION__, n, mtdid); - if (n > 0) { - part_banks[idx].type = "command line"; - part_banks[idx].nums = n; - } -#endif /* CONFIG_MTD_CMDLINE_PARTS */ - if (part_banks[idx].nums == 0) { - printk(KERN_NOTICE - "TQM834x flash bank %d: no partition info " - "available, registering whole device\n", idx); - add_mtd_device(mtd_banks[idx]); - } else { - printk(KERN_NOTICE - "TQM834x flash bank %d: Using %s partition " - "definition\n", idx, part_banks[idx].type); - add_mtd_partitions(mtd_banks[idx], - part_banks[idx].mtd_part, - part_banks[idx].nums); - } - } -#else /* ! CONFIG_MTD_PARTITIONS */ - printk(KERN_NOTICE "TQM834x flash: registering %d flash banks " - "at once\n", num_banks); - - for(idx = 0 ; idx < num_banks ; idx++) - add_mtd_device(mtd_banks[idx]); - -#endif /* CONFIG_MTD_PARTITIONS */ - - return 0; -error_mem: - for (idx = 0 ; idx < FLASH_BANK_MAX ; idx++) { - if (map_banks[idx] != NULL) { - if (map_banks[idx]->name != NULL) { - kfree(map_banks[idx]->name); - map_banks[idx]->name = NULL; - } - kfree(map_banks[idx]); - map_banks[idx] = NULL; - } - } - - iounmap((void *)start_scan_addr); - - return ret; -} - -static void __exit cleanup_tqm834x_mtd(void) -{ - unsigned int idx = 0; - for(idx = 0 ; idx < num_banks ; idx++) { - /* destroy mtd_info previously allocated */ - if (mtd_banks[idx]) { - del_mtd_partitions(mtd_banks[idx]); - map_destroy(mtd_banks[idx]); - } - - /* release map_info not used anymore */ - kfree(map_banks[idx]->name); - kfree(map_banks[idx]); - } - - if (start_scan_addr) { - iounmap((void *)start_scan_addr); - start_scan_addr = 0; - } -} - -module_init(init_tqm834x_mtd); -module_exit(cleanup_tqm834x_mtd); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Wolfgang Denk <wd@denx.de>"); -MODULE_DESCRIPTION("MTD map driver for TQM834x boards"); diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index ef89780eb9d6..74d9d30edabd 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -24,10 +24,9 @@ #include <linux/kthread.h> #include <asm/uaccess.h> -static LIST_HEAD(blktrans_majors); +#include "mtdcore.h" -extern struct mutex mtd_table_mutex; -extern struct mtd_info *mtd_table[]; +static LIST_HEAD(blktrans_majors); struct mtd_blkcore_priv { struct task_struct *thread; @@ -202,7 +201,7 @@ static int blktrans_ioctl(struct inode *inode, struct file *file, } } -struct block_device_operations mtd_blktrans_ops = { +static struct block_device_operations mtd_blktrans_ops = { .owner = THIS_MODULE, .open = blktrans_open, .release = blktrans_release, diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index d091b2430b48..22ed96c4b7bd 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -136,7 +136,8 @@ static int mtd_close(struct inode *inode, struct file *file) DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n"); - if (mtd->sync) + /* Only sync if opened RW */ + if ((file->f_mode & 2) && mtd->sync) mtd->sync(mtd); put_mtd_device(mtd); diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 41844ea02462..96be7ef62f35 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -178,7 +178,7 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs, /* Check alignment */ if (mtd->writesize > 1) { - loff_t __to = to; + uint64_t __to = to; if (do_div(__to, mtd->writesize) || (total_len % mtd->writesize)) return -EINVAL; } diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index c153b64a8300..6c2645e28371 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -22,6 +22,8 @@ #include <linux/mtd/mtd.h> +#include "mtdcore.h" + /* These are exported solely for the purpose of mtd_blkdevs.c. You should not use them for _anything_ else */ DEFINE_MUTEX(mtd_table_mutex); diff --git a/drivers/mtd/mtdcore.h b/drivers/mtd/mtdcore.h new file mode 100644 index 000000000000..a33251f4b872 --- /dev/null +++ b/drivers/mtd/mtdcore.h @@ -0,0 +1,11 @@ +/* linux/drivers/mtd/mtdcore.h + * + * Header file for driver private mtdcore exports + * + */ + +/* These are exported solely for the purpose of mtd_blkdevs.c. You + should not use them for _anything_ else */ + +extern struct mutex mtd_table_mutex; +extern struct mtd_info *mtd_table[MAX_MTD_DEVICES]; diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c new file mode 100644 index 000000000000..f8af627f0b98 --- /dev/null +++ b/drivers/mtd/mtdoops.c @@ -0,0 +1,376 @@ +/* + * MTD Oops/Panic logger + * + * Copyright (C) 2007 Nokia Corporation. All rights reserved. + * + * Author: Richard Purdie <rpurdie@openedhand.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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/console.h> +#include <linux/vmalloc.h> +#include <linux/workqueue.h> +#include <linux/sched.h> +#include <linux/wait.h> +#include <linux/mtd/mtd.h> + +#define OOPS_PAGE_SIZE 4096 + +static struct mtdoops_context { + int mtd_index; + struct work_struct work; + struct mtd_info *mtd; + int oops_pages; + int nextpage; + int nextcount; + + void *oops_buf; + int ready; + int writecount; +} oops_cxt; + +static void mtdoops_erase_callback(struct erase_info *done) +{ + wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; + wake_up(wait_q); +} + +static int mtdoops_erase_block(struct mtd_info *mtd, int offset) +{ + struct erase_info erase; + DECLARE_WAITQUEUE(wait, current); + wait_queue_head_t wait_q; + int ret; + + init_waitqueue_head(&wait_q); + erase.mtd = mtd; + erase.callback = mtdoops_erase_callback; + erase.addr = offset; + if (mtd->erasesize < OOPS_PAGE_SIZE) + erase.len = OOPS_PAGE_SIZE; + else + erase.len = mtd->erasesize; + erase.priv = (u_long)&wait_q; + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&wait_q, &wait); + + ret = mtd->erase(mtd, &erase); + if (ret) { + set_current_state(TASK_RUNNING); + remove_wait_queue(&wait_q, &wait); + printk (KERN_WARNING "mtdoops: erase of region [0x%x, 0x%x] " + "on \"%s\" failed\n", + erase.addr, erase.len, mtd->name); + return ret; + } + + schedule(); /* Wait for erase to finish. */ + remove_wait_queue(&wait_q, &wait); + + return 0; +} + +static int mtdoops_inc_counter(struct mtdoops_context *cxt) +{ + struct mtd_info *mtd = cxt->mtd; + size_t retlen; + u32 count; + int ret; + + cxt->nextpage++; + if (cxt->nextpage > cxt->oops_pages) + cxt->nextpage = 0; + cxt->nextcount++; + if (cxt->nextcount == 0xffffffff) + cxt->nextcount = 0; + + ret = mtd->read(mtd, cxt->nextpage * OOPS_PAGE_SIZE, 4, + &retlen, (u_char *) &count); + if ((retlen != 4) || (ret < 0)) { + printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)" + ", err %d.\n", cxt->nextpage * OOPS_PAGE_SIZE, + retlen, ret); + return 1; + } + + /* See if we need to erase the next block */ + if (count != 0xffffffff) + return 1; + + printk(KERN_DEBUG "mtdoops: Ready %d, %d (no erase)\n", + cxt->nextpage, cxt->nextcount); + cxt->ready = 1; + return 0; +} + +static void mtdoops_prepare(struct mtdoops_context *cxt) +{ + struct mtd_info *mtd = cxt->mtd; + int i = 0, j, ret, mod; + + /* We were unregistered */ + if (!mtd) + return; + + mod = (cxt->nextpage * OOPS_PAGE_SIZE) % mtd->erasesize; + if (mod != 0) { + cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / OOPS_PAGE_SIZE); + if (cxt->nextpage > cxt->oops_pages) + cxt->nextpage = 0; + } + + while (mtd->block_isbad && + mtd->block_isbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE)) { +badblock: + printk(KERN_WARNING "mtdoops: Bad block at %08x\n", + cxt->nextpage * OOPS_PAGE_SIZE); + i++; + cxt->nextpage = cxt->nextpage + (mtd->erasesize / OOPS_PAGE_SIZE); + if (cxt->nextpage > cxt->oops_pages) + cxt->nextpage = 0; + if (i == (cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE))) { + printk(KERN_ERR "mtdoops: All blocks bad!\n"); + return; + } + } + + for (j = 0, ret = -1; (j < 3) && (ret < 0); j++) + ret = mtdoops_erase_block(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + + if (ret < 0) { + if (mtd->block_markbad) + mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + goto badblock; + } + + printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount); + + cxt->ready = 1; +} + +static void mtdoops_workfunc(struct work_struct *work) +{ + struct mtdoops_context *cxt = + container_of(work, struct mtdoops_context, work); + + mtdoops_prepare(cxt); +} + +static int find_next_position(struct mtdoops_context *cxt) +{ + struct mtd_info *mtd = cxt->mtd; + int page, maxpos = 0; + u32 count, maxcount = 0xffffffff; + size_t retlen; + + for (page = 0; page < cxt->oops_pages; page++) { + mtd->read(mtd, page * OOPS_PAGE_SIZE, 4, &retlen, (u_char *) &count); + if (count == 0xffffffff) + continue; + if (maxcount == 0xffffffff) { + maxcount = count; + maxpos = page; + } else if ((count < 0x40000000) && (maxcount > 0xc0000000)) { + maxcount = count; + maxpos = page; + } else if ((count > maxcount) && (count < 0xc0000000)) { + maxcount = count; + maxpos = page; + } else if ((count > maxcount) && (count > 0xc0000000) + && (maxcount > 0x80000000)) { + maxcount = count; + maxpos = page; + } + } + if (maxcount == 0xffffffff) { + cxt->nextpage = 0; + cxt->nextcount = 1; + cxt->ready = 1; + printk(KERN_DEBUG "mtdoops: Ready %d, %d (first init)\n", + cxt->nextpage, cxt->nextcount); + return 0; + } + + cxt->nextpage = maxpos; + cxt->nextcount = maxcount; + + return mtdoops_inc_counter(cxt); +} + + +static void mtdoops_notify_add(struct mtd_info *mtd) +{ + struct mtdoops_context *cxt = &oops_cxt; + int ret; + + if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0) + return; + + if (mtd->size < (mtd->erasesize * 2)) { + printk(KERN_ERR "MTD partition %d not big enough for mtdoops\n", + mtd->index); + return; + } + + cxt->mtd = mtd; + cxt->oops_pages = mtd->size / OOPS_PAGE_SIZE; + + ret = find_next_position(cxt); + if (ret == 1) + mtdoops_prepare(cxt); + + printk(KERN_DEBUG "mtdoops: Attached to MTD device %d\n", mtd->index); +} + +static void mtdoops_notify_remove(struct mtd_info *mtd) +{ + struct mtdoops_context *cxt = &oops_cxt; + + if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0) + return; + + cxt->mtd = NULL; + flush_scheduled_work(); +} + +static void mtdoops_console_sync(void) +{ + struct mtdoops_context *cxt = &oops_cxt; + struct mtd_info *mtd = cxt->mtd; + size_t retlen; + int ret; + + if (!cxt->ready || !mtd) + return; + + if (cxt->writecount == 0) + return; + + if (cxt->writecount < OOPS_PAGE_SIZE) + memset(cxt->oops_buf + cxt->writecount, 0xff, + OOPS_PAGE_SIZE - cxt->writecount); + + ret = mtd->write(mtd, cxt->nextpage * OOPS_PAGE_SIZE, + OOPS_PAGE_SIZE, &retlen, cxt->oops_buf); + cxt->ready = 0; + cxt->writecount = 0; + + if ((retlen != OOPS_PAGE_SIZE) || (ret < 0)) + printk(KERN_ERR "mtdoops: Write failure at %d (%td of %d written), err %d.\n", + cxt->nextpage * OOPS_PAGE_SIZE, retlen, OOPS_PAGE_SIZE, ret); + + ret = mtdoops_inc_counter(cxt); + if (ret == 1) + schedule_work(&cxt->work); +} + +static void +mtdoops_console_write(struct console *co, const char *s, unsigned int count) +{ + struct mtdoops_context *cxt = co->data; + struct mtd_info *mtd = cxt->mtd; + int i; + + if (!oops_in_progress) { + mtdoops_console_sync(); + return; + } + + if (!cxt->ready || !mtd) + return; + + if (cxt->writecount == 0) { + u32 *stamp = cxt->oops_buf; + *stamp = cxt->nextcount; + cxt->writecount = 4; + } + + if ((count + cxt->writecount) > OOPS_PAGE_SIZE) + count = OOPS_PAGE_SIZE - cxt->writecount; + + for (i = 0; i < count; i++, s++) + *((char *)(cxt->oops_buf) + cxt->writecount + i) = *s; + + cxt->writecount = cxt->writecount + count; +} + +static int __init mtdoops_console_setup(struct console *co, char *options) +{ + struct mtdoops_context *cxt = co->data; + + if (cxt->mtd_index != -1) + return -EBUSY; + if (co->index == -1) + return -EINVAL; + + cxt->mtd_index = co->index; + return 0; +} + +static struct mtd_notifier mtdoops_notifier = { + .add = mtdoops_notify_add, + .remove = mtdoops_notify_remove, +}; + +static struct console mtdoops_console = { + .name = "ttyMTD", + .write = mtdoops_console_write, + .setup = mtdoops_console_setup, + .unblank = mtdoops_console_sync, + .flags = CON_PRINTBUFFER, + .index = -1, + .data = &oops_cxt, +}; + +static int __init mtdoops_console_init(void) +{ + struct mtdoops_context *cxt = &oops_cxt; + + cxt->mtd_index = -1; + cxt->oops_buf = vmalloc(OOPS_PAGE_SIZE); + + if (!cxt->oops_buf) { + printk(KERN_ERR "Failed to allocate oops buffer workspace\n"); + return -ENOMEM; + } + + INIT_WORK(&cxt->work, mtdoops_workfunc); + + register_console(&mtdoops_console); + register_mtd_user(&mtdoops_notifier); + return 0; +} + +static void __exit mtdoops_console_exit(void) +{ + struct mtdoops_context *cxt = &oops_cxt; + + unregister_mtd_user(&mtdoops_notifier); + unregister_console(&mtdoops_console); + vfree(cxt->oops_buf); +} + + +subsys_initcall(mtdoops_console_init); +module_exit(mtdoops_console_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>"); +MODULE_DESCRIPTION("MTD Oops/Panic console logger/driver"); diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index f1d60b6f048e..8f9c3baeb38e 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -91,6 +91,25 @@ config MTD_NAND_AU1550 This enables the driver for the NAND flash controller on the AMD/Alchemy 1550 SOC. +config MTD_NAND_BF5XX + tristate "Blackfin on-chip NAND Flash Controller driver" + depends on BF54x && MTD_NAND + help + This enables the Blackfin on-chip NAND flash controller + + No board specific support is done by this driver, each board + must advertise a platform_device for the driver to attach. + + This driver can also be built as a module. If so, the module + will be called bf5xx-nand. + +config MTD_NAND_BF5XX_HWECC + bool "BF5XX NAND Hardware ECC" + depends on MTD_NAND_BF5XX + help + Enable the use of the BF5XX's internal ECC generator when + using NAND. + config MTD_NAND_RTC_FROM4 tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)" depends on SH_SOLUTION_ENGINE @@ -134,10 +153,10 @@ config MTD_NAND_S3C2410_HWECC config MTD_NAND_NDFC tristate "NDFC NanD Flash Controller" - depends on 44x + depends on 4xx && !PPC_MERGE select MTD_NAND_ECC_SMC help - NDFC Nand Flash Controllers are integrated in EP44x SoCs + NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs config MTD_NAND_S3C2410_CLKSTOP bool "S3C2410 NAND IDLE clock stop" @@ -237,7 +256,7 @@ config MTD_NAND_CAFE select REED_SOLOMON select REED_SOLOMON_DEC16 help - Use NAND flash attached to the CAFÉ chip designed for the $100 + Use NAND flash attached to the CAFÉ chip designed for the OLPC laptop. config MTD_NAND_CS553X @@ -280,5 +299,11 @@ config MTD_NAND_PLATFORM devices. You will need to provide platform-specific functions via platform_data. +config MTD_ALAUDA + tristate "MTD driver for Olympus MAUSB-10 and Fijufilm DPC-R1" + depends on MTD_NAND && USB + help + These two (and possibly other) Alauda-based cardreaders for + SmartMedia and xD allow raw flash access. endif # MTD_NAND diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index edba1db14bfa..3ad6c0165da3 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_MTD_NAND_TOTO) += toto.o obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o +obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o obj-$(CONFIG_MTD_NAND_S3C2410) += s3c2410.o obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o @@ -27,5 +28,6 @@ obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o +obj-$(CONFIG_MTD_ALAUDA) += alauda.o nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c new file mode 100644 index 000000000000..257937cd99bf --- /dev/null +++ b/drivers/mtd/nand/alauda.c @@ -0,0 +1,742 @@ +/* + * MTD driver for Alauda chips + * + * Copyright (C) 2007 Joern Engel <joern@logfs.org> + * + * Based on drivers/usb/usb-skeleton.c which is: + * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) + * and on drivers/usb/storage/alauda.c, which is: + * (c) 2005 Daniel Drake <dsd@gentoo.org> + * + * Idea and initial work by Arnd Bergmann <arnd@arndb.de> + */ +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/kref.h> +#include <linux/usb.h> +#include <linux/mutex.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand_ecc.h> + +/* Control commands */ +#define ALAUDA_GET_XD_MEDIA_STATUS 0x08 +#define ALAUDA_ACK_XD_MEDIA_CHANGE 0x0a +#define ALAUDA_GET_XD_MEDIA_SIG 0x86 + +/* Common prefix */ +#define ALAUDA_BULK_CMD 0x40 + +/* The two ports */ +#define ALAUDA_PORT_XD 0x00 +#define ALAUDA_PORT_SM 0x01 + +/* Bulk commands */ +#define ALAUDA_BULK_READ_PAGE 0x84 +#define ALAUDA_BULK_READ_OOB 0x85 /* don't use, there's a chip bug */ +#define ALAUDA_BULK_READ_BLOCK 0x94 +#define ALAUDA_BULK_ERASE_BLOCK 0xa3 +#define ALAUDA_BULK_WRITE_PAGE 0xa4 +#define ALAUDA_BULK_WRITE_BLOCK 0xb4 +#define ALAUDA_BULK_RESET_MEDIA 0xe0 + +/* Address shifting */ +#define PBA_LO(pba) ((pba & 0xF) << 5) +#define PBA_HI(pba) (pba >> 3) +#define PBA_ZONE(pba) (pba >> 11) + +#define TIMEOUT HZ + +static struct usb_device_id alauda_table [] = { + { USB_DEVICE(0x0584, 0x0008) }, /* Fujifilm DPC-R1 */ + { USB_DEVICE(0x07b4, 0x010a) }, /* Olympus MAUSB-10 */ + { } +}; +MODULE_DEVICE_TABLE(usb, alauda_table); + +struct alauda_card { + u8 id; /* id byte */ + u8 chipshift; /* 1<<chipshift total size */ + u8 pageshift; /* 1<<pageshift page size */ + u8 blockshift; /* 1<<blockshift block size */ +}; + +struct alauda { + struct usb_device *dev; + struct usb_interface *interface; + struct mtd_info *mtd; + struct alauda_card *card; + struct mutex card_mutex; + u32 pagemask; + u32 bytemask; + u32 blockmask; + unsigned int write_out; + unsigned int bulk_in; + unsigned int bulk_out; + u8 port; + struct kref kref; +}; + +static struct alauda_card alauda_card_ids[] = { + /* NAND flash */ + { 0x6e, 20, 8, 12}, /* 1 MB */ + { 0xe8, 20, 8, 12}, /* 1 MB */ + { 0xec, 20, 8, 12}, /* 1 MB */ + { 0x64, 21, 8, 12}, /* 2 MB */ + { 0xea, 21, 8, 12}, /* 2 MB */ + { 0x6b, 22, 9, 13}, /* 4 MB */ + { 0xe3, 22, 9, 13}, /* 4 MB */ + { 0xe5, 22, 9, 13}, /* 4 MB */ + { 0xe6, 23, 9, 13}, /* 8 MB */ + { 0x73, 24, 9, 14}, /* 16 MB */ + { 0x75, 25, 9, 14}, /* 32 MB */ + { 0x76, 26, 9, 14}, /* 64 MB */ + { 0x79, 27, 9, 14}, /* 128 MB */ + { 0x71, 28, 9, 14}, /* 256 MB */ + + /* MASK ROM */ + { 0x5d, 21, 9, 13}, /* 2 MB */ + { 0xd5, 22, 9, 13}, /* 4 MB */ + { 0xd6, 23, 9, 13}, /* 8 MB */ + { 0x57, 24, 9, 13}, /* 16 MB */ + { 0x58, 25, 9, 13}, /* 32 MB */ + { } +}; + +static struct alauda_card *get_card(u8 id) +{ + struct alauda_card *card; + + for (card = alauda_card_ids; card->id; card++) + if (card->id == id) + return card; + return NULL; +} + +static void alauda_delete(struct kref *kref) +{ + struct alauda *al = container_of(kref, struct alauda, kref); + + if (al->mtd) { + del_mtd_device(al->mtd); + kfree(al->mtd); + } + usb_put_dev(al->dev); + kfree(al); +} + +static int alauda_get_media_status(struct alauda *al, void *buf) +{ + int ret; + + mutex_lock(&al->card_mutex); + ret = usb_control_msg(al->dev, usb_rcvctrlpipe(al->dev, 0), + ALAUDA_GET_XD_MEDIA_STATUS, 0xc0, 0, 1, buf, 2, HZ); + mutex_unlock(&al->card_mutex); + return ret; +} + +static int alauda_ack_media(struct alauda *al) +{ + int ret; + + mutex_lock(&al->card_mutex); + ret = usb_control_msg(al->dev, usb_sndctrlpipe(al->dev, 0), + ALAUDA_ACK_XD_MEDIA_CHANGE, 0x40, 0, 1, NULL, 0, HZ); + mutex_unlock(&al->card_mutex); + return ret; +} + +static int alauda_get_media_signatures(struct alauda *al, void *buf) +{ + int ret; + + mutex_lock(&al->card_mutex); + ret = usb_control_msg(al->dev, usb_rcvctrlpipe(al->dev, 0), + ALAUDA_GET_XD_MEDIA_SIG, 0xc0, 0, 0, buf, 4, HZ); + mutex_unlock(&al->card_mutex); + return ret; +} + +static void alauda_reset(struct alauda *al) +{ + u8 command[] = { + ALAUDA_BULK_CMD, ALAUDA_BULK_RESET_MEDIA, 0, 0, + 0, 0, 0, 0, al->port + }; + mutex_lock(&al->card_mutex); + usb_bulk_msg(al->dev, al->bulk_out, command, 9, NULL, HZ); + mutex_unlock(&al->card_mutex); +} + +static void correct_data(void *buf, void *read_ecc, + int *corrected, int *uncorrected) +{ + u8 calc_ecc[3]; + int err; + + nand_calculate_ecc(NULL, buf, calc_ecc); + err = nand_correct_data(NULL, buf, read_ecc, calc_ecc); + if (err) { + if (err > 0) + (*corrected)++; + else + (*uncorrected)++; + } +} + +struct alauda_sg_request { + struct urb *urb[3]; + struct completion comp; +}; + +static void alauda_complete(struct urb *urb) +{ + struct completion *comp = urb->context; + + if (comp) + complete(comp); +} + +static int __alauda_read_page(struct mtd_info *mtd, loff_t from, void *buf, + void *oob) +{ + struct alauda_sg_request sg; + struct alauda *al = mtd->priv; + u32 pba = from >> al->card->blockshift; + u32 page = (from >> al->card->pageshift) & al->pagemask; + u8 command[] = { + ALAUDA_BULK_CMD, ALAUDA_BULK_READ_PAGE, PBA_HI(pba), + PBA_ZONE(pba), 0, PBA_LO(pba) + page, 1, 0, al->port + }; + int i, err; + + for (i=0; i<3; i++) + sg.urb[i] = NULL; + + err = -ENOMEM; + for (i=0; i<3; i++) { + sg.urb[i] = usb_alloc_urb(0, GFP_NOIO); + if (!sg.urb[i]) + goto out; + } + init_completion(&sg.comp); + usb_fill_bulk_urb(sg.urb[0], al->dev, al->bulk_out, command, 9, + alauda_complete, NULL); + usb_fill_bulk_urb(sg.urb[1], al->dev, al->bulk_in, buf, mtd->writesize, + alauda_complete, NULL); + usb_fill_bulk_urb(sg.urb[2], al->dev, al->bulk_in, oob, 16, + alauda_complete, &sg.comp); + + mutex_lock(&al->card_mutex); + for (i=0; i<3; i++) { + err = usb_submit_urb(sg.urb[i], GFP_NOIO); + if (err) + goto cancel; + } + if (!wait_for_completion_timeout(&sg.comp, TIMEOUT)) { + err = -ETIMEDOUT; +cancel: + for (i=0; i<3; i++) { + usb_kill_urb(sg.urb[i]); + } + } + mutex_unlock(&al->card_mutex); + +out: + usb_free_urb(sg.urb[0]); + usb_free_urb(sg.urb[1]); + usb_free_urb(sg.urb[2]); + return err; +} + +static int alauda_read_page(struct mtd_info *mtd, loff_t from, + void *buf, u8 *oob, int *corrected, int *uncorrected) +{ + int err; + + err = __alauda_read_page(mtd, from, buf, oob); + if (err) + return err; + correct_data(buf, oob+13, corrected, uncorrected); + correct_data(buf+256, oob+8, corrected, uncorrected); + return 0; +} + +static int alauda_write_page(struct mtd_info *mtd, loff_t to, void *buf, + void *oob) +{ + struct alauda_sg_request sg; + struct alauda *al = mtd->priv; + u32 pba = to >> al->card->blockshift; + u32 page = (to >> al->card->pageshift) & al->pagemask; + u8 command[] = { + ALAUDA_BULK_CMD, ALAUDA_BULK_WRITE_PAGE, PBA_HI(pba), + PBA_ZONE(pba), 0, PBA_LO(pba) + page, 32, 0, al->port + }; + int i, err; + + for (i=0; i<3; i++) + sg.urb[i] = NULL; + + err = -ENOMEM; + for (i=0; i<3; i++) { + sg.urb[i] = usb_alloc_urb(0, GFP_NOIO); + if (!sg.urb[i]) + goto out; + } + init_completion(&sg.comp); + usb_fill_bulk_urb(sg.urb[0], al->dev, al->bulk_out, command, 9, + alauda_complete, NULL); + usb_fill_bulk_urb(sg.urb[1], al->dev, al->write_out, buf,mtd->writesize, + alauda_complete, NULL); + usb_fill_bulk_urb(sg.urb[2], al->dev, al->write_out, oob, 16, + alauda_complete, &sg.comp); + + mutex_lock(&al->card_mutex); + for (i=0; i<3; i++) { + err = usb_submit_urb(sg.urb[i], GFP_NOIO); + if (err) + goto cancel; + } + if (!wait_for_completion_timeout(&sg.comp, TIMEOUT)) { + err = -ETIMEDOUT; +cancel: + for (i=0; i<3; i++) { + usb_kill_urb(sg.urb[i]); + } + } + mutex_unlock(&al->card_mutex); + +out: + usb_free_urb(sg.urb[0]); + usb_free_urb(sg.urb[1]); + usb_free_urb(sg.urb[2]); + return err; +} + +static int alauda_erase_block(struct mtd_info *mtd, loff_t ofs) +{ + struct alauda_sg_request sg; + struct alauda *al = mtd->priv; + u32 pba = ofs >> al->card->blockshift; + u8 command[] = { + ALAUDA_BULK_CMD, ALAUDA_BULK_ERASE_BLOCK, PBA_HI(pba), + PBA_ZONE(pba), 0, PBA_LO(pba), 0x02, 0, al->port + }; + u8 buf[2]; + int i, err; + + for (i=0; i<2; i++) + sg.urb[i] = NULL; + + err = -ENOMEM; + for (i=0; i<2; i++) { + sg.urb[i] = usb_alloc_urb(0, GFP_NOIO); + if (!sg.urb[i]) + goto out; + } + init_completion(&sg.comp); + usb_fill_bulk_urb(sg.urb[0], al->dev, al->bulk_out, command, 9, + alauda_complete, NULL); + usb_fill_bulk_urb(sg.urb[1], al->dev, al->bulk_in, buf, 2, + alauda_complete, &sg.comp); + + mutex_lock(&al->card_mutex); + for (i=0; i<2; i++) { + err = usb_submit_urb(sg.urb[i], GFP_NOIO); + if (err) + goto cancel; + } + if (!wait_for_completion_timeout(&sg.comp, TIMEOUT)) { + err = -ETIMEDOUT; +cancel: + for (i=0; i<2; i++) { + usb_kill_urb(sg.urb[i]); + } + } + mutex_unlock(&al->card_mutex); + +out: + usb_free_urb(sg.urb[0]); + usb_free_urb(sg.urb[1]); + return err; +} + +static int alauda_read_oob(struct mtd_info *mtd, loff_t from, void *oob) +{ + static u8 ignore_buf[512]; /* write only */ + + return __alauda_read_page(mtd, from, ignore_buf, oob); +} + +static int popcount8(u8 c) +{ + int ret = 0; + + for ( ; c; c>>=1) + ret += c & 1; + return ret; +} + +static int alauda_isbad(struct mtd_info *mtd, loff_t ofs) +{ + u8 oob[16]; + int err; + + err = alauda_read_oob(mtd, ofs, oob); + if (err) + return err; + + /* A block is marked bad if two or more bits are zero */ + return popcount8(oob[5]) >= 7 ? 0 : 1; +} + +static int alauda_bounce_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct alauda *al = mtd->priv; + void *bounce_buf; + int err, corrected=0, uncorrected=0; + + bounce_buf = kmalloc(mtd->writesize, GFP_KERNEL); + if (!bounce_buf) + return -ENOMEM; + + *retlen = len; + while (len) { + u8 oob[16]; + size_t byte = from & al->bytemask; + size_t cplen = min(len, mtd->writesize - byte); + + err = alauda_read_page(mtd, from, bounce_buf, oob, + &corrected, &uncorrected); + if (err) + goto out; + + memcpy(buf, bounce_buf + byte, cplen); + buf += cplen; + from += cplen; + len -= cplen; + } + err = 0; + if (corrected) + err = -EUCLEAN; + if (uncorrected) + err = -EBADMSG; +out: + kfree(bounce_buf); + return err; +} + +static int alauda_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct alauda *al = mtd->priv; + int err, corrected=0, uncorrected=0; + + if ((from & al->bytemask) || (len & al->bytemask)) + return alauda_bounce_read(mtd, from, len, retlen, buf); + + *retlen = len; + while (len) { + u8 oob[16]; + + err = alauda_read_page(mtd, from, buf, oob, + &corrected, &uncorrected); + if (err) + return err; + + buf += mtd->writesize; + from += mtd->writesize; + len -= mtd->writesize; + } + err = 0; + if (corrected) + err = -EUCLEAN; + if (uncorrected) + err = -EBADMSG; + return err; +} + +static int alauda_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) +{ + struct alauda *al = mtd->priv; + int err; + + if ((to & al->bytemask) || (len & al->bytemask)) + return -EINVAL; + + *retlen = len; + while (len) { + u32 page = (to >> al->card->pageshift) & al->pagemask; + u8 oob[16] = { 'h', 'e', 'l', 'l', 'o', 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + /* don't write to bad blocks */ + if (page == 0) { + err = alauda_isbad(mtd, to); + if (err) { + return -EIO; + } + } + nand_calculate_ecc(mtd, buf, &oob[13]); + nand_calculate_ecc(mtd, buf+256, &oob[8]); + + err = alauda_write_page(mtd, to, (void*)buf, oob); + if (err) + return err; + + buf += mtd->writesize; + to += mtd->writesize; + len -= mtd->writesize; + } + return 0; +} + +static int __alauda_erase(struct mtd_info *mtd, struct erase_info *instr) +{ + struct alauda *al = mtd->priv; + u32 ofs = instr->addr; + u32 len = instr->len; + int err; + + if ((ofs & al->blockmask) || (len & al->blockmask)) + return -EINVAL; + + while (len) { + /* don't erase bad blocks */ + err = alauda_isbad(mtd, ofs); + if (err > 0) + err = -EIO; + if (err < 0) + return err; + + err = alauda_erase_block(mtd, ofs); + if (err < 0) + return err; + + ofs += mtd->erasesize; + len -= mtd->erasesize; + } + return 0; +} + +static int alauda_erase(struct mtd_info *mtd, struct erase_info *instr) +{ + int err; + + err = __alauda_erase(mtd, instr); + instr->state = err ? MTD_ERASE_FAILED : MTD_ERASE_DONE; + mtd_erase_callback(instr); + return err; +} + +static int alauda_init_media(struct alauda *al) +{ + u8 buf[4], *b0=buf, *b1=buf+1; + struct alauda_card *card; + struct mtd_info *mtd; + int err; + + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); + if (!mtd) + return -ENOMEM; + + for (;;) { + err = alauda_get_media_status(al, buf); + if (err < 0) + goto error; + if (*b0 & 0x10) + break; + msleep(20); + } + + err = alauda_ack_media(al); + if (err) + goto error; + + msleep(10); + + err = alauda_get_media_status(al, buf); + if (err < 0) + goto error; + + if (*b0 != 0x14) { + /* media not ready */ + err = -EIO; + goto error; + } + err = alauda_get_media_signatures(al, buf); + if (err < 0) + goto error; + + card = get_card(*b1); + if (!card) { + printk(KERN_ERR"Alauda: unknown card id %02x\n", *b1); + err = -EIO; + goto error; + } + printk(KERN_INFO"pagesize=%x\nerasesize=%x\nsize=%xMiB\n", + 1<<card->pageshift, 1<<card->blockshift, + 1<<(card->chipshift-20)); + al->card = card; + al->pagemask = (1 << (card->blockshift - card->pageshift)) - 1; + al->bytemask = (1 << card->pageshift) - 1; + al->blockmask = (1 << card->blockshift) - 1; + + mtd->name = "alauda"; + mtd->size = 1<<card->chipshift; + mtd->erasesize = 1<<card->blockshift; + mtd->writesize = 1<<card->pageshift; + mtd->type = MTD_NANDFLASH; + mtd->flags = MTD_CAP_NANDFLASH; + mtd->read = alauda_read; + mtd->write = alauda_write; + mtd->erase = alauda_erase; + mtd->block_isbad = alauda_isbad; + mtd->priv = al; + mtd->owner = THIS_MODULE; + + err = add_mtd_device(mtd); + if (err) { + err = -ENFILE; + goto error; + } + + al->mtd = mtd; + alauda_reset(al); /* no clue whether this is necessary */ + return 0; +error: + kfree(mtd); + return err; +} + +static int alauda_check_media(struct alauda *al) +{ + u8 buf[2], *b0 = buf, *b1 = buf+1; + int err; + + err = alauda_get_media_status(al, buf); + if (err < 0) + return err; + + if ((*b1 & 0x01) == 0) { + /* door open */ + return -EIO; + } + if ((*b0 & 0x80) || ((*b0 & 0x1F) == 0x10)) { + /* no media ? */ + return -EIO; + } + if (*b0 & 0x08) { + /* media change ? */ + return alauda_init_media(al); + } + return 0; +} + +static int alauda_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct alauda *al; + struct usb_host_interface *iface; + struct usb_endpoint_descriptor *ep, + *ep_in=NULL, *ep_out=NULL, *ep_wr=NULL; + int i, err = -ENOMEM; + + al = kzalloc(2*sizeof(*al), GFP_KERNEL); + if (!al) + goto error; + + kref_init(&al->kref); + usb_set_intfdata(interface, al); + + al->dev = usb_get_dev(interface_to_usbdev(interface)); + al->interface = interface; + + iface = interface->cur_altsetting; + for (i = 0; i < iface->desc.bNumEndpoints; ++i) { + ep = &iface->endpoint[i].desc; + + if (usb_endpoint_is_bulk_in(ep)) { + ep_in = ep; + } else if (usb_endpoint_is_bulk_out(ep)) { + if (i==0) + ep_wr = ep; + else + ep_out = ep; + } + } + err = -EIO; + if (!ep_wr || !ep_in || !ep_out) + goto error; + + al->write_out = usb_sndbulkpipe(al->dev, + ep_wr->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + al->bulk_in = usb_rcvbulkpipe(al->dev, + ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + al->bulk_out = usb_sndbulkpipe(al->dev, + ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + + /* second device is identical up to now */ + memcpy(al+1, al, sizeof(*al)); + + mutex_init(&al[0].card_mutex); + mutex_init(&al[1].card_mutex); + + al[0].port = ALAUDA_PORT_XD; + al[1].port = ALAUDA_PORT_SM; + + info("alauda probed"); + alauda_check_media(al); + alauda_check_media(al+1); + + return 0; + +error: + if (al) + kref_put(&al->kref, alauda_delete); + return err; +} + +static void alauda_disconnect(struct usb_interface *interface) +{ + struct alauda *al; + + al = usb_get_intfdata(interface); + usb_set_intfdata(interface, NULL); + + /* FIXME: prevent more I/O from starting */ + + /* decrement our usage count */ + if (al) + kref_put(&al->kref, alauda_delete); + + info("alauda gone"); +} + +static struct usb_driver alauda_driver = { + .name = "alauda", + .probe = alauda_probe, + .disconnect = alauda_disconnect, + .id_table = alauda_table, +}; + +static int __init alauda_init(void) +{ + return usb_register(&alauda_driver); +} + +static void __exit alauda_exit(void) +{ + usb_deregister(&alauda_driver); +} + +module_init(alauda_init); +module_exit(alauda_exit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c new file mode 100644 index 000000000000..1657ecd74881 --- /dev/null +++ b/drivers/mtd/nand/bf5xx_nand.c @@ -0,0 +1,788 @@ +/* linux/drivers/mtd/nand/bf5xx_nand.c + * + * Copyright 2006-2007 Analog Devices Inc. + * http://blackfin.uclinux.org/ + * Bryan Wu <bryan.wu@analog.com> + * + * Blackfin BF5xx on-chip NAND flash controler driver + * + * Derived from drivers/mtd/nand/s3c2410.c + * Copyright (c) 2007 Ben Dooks <ben@simtec.co.uk> + * + * Derived from drivers/mtd/nand/cafe.c + * Copyright © 2006 Red Hat, Inc. + * Copyright © 2006 David Woodhouse <dwmw2@infradead.org> + * + * Changelog: + * 12-Jun-2007 Bryan Wu: Initial version + * 18-Jul-2007 Bryan Wu: + * - ECC_HW and ECC_SW supported + * - DMA supported in ECC_HW + * - YAFFS tested as rootfs in both ECC_HW and ECC_SW + * + * TODO: + * Enable JFFS2 over NAND as rootfs + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/bitops.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> + +#include <asm/blackfin.h> +#include <asm/dma.h> +#include <asm/cacheflush.h> +#include <asm/nand.h> +#include <asm/portmux.h> + +#define DRV_NAME "bf5xx-nand" +#define DRV_VERSION "1.2" +#define DRV_AUTHOR "Bryan Wu <bryan.wu@analog.com>" +#define DRV_DESC "BF5xx on-chip NAND FLash Controller Driver" + +#ifdef CONFIG_MTD_NAND_BF5XX_HWECC +static int hardware_ecc = 1; +#else +static int hardware_ecc; +#endif + +static unsigned short bfin_nfc_pin_req[] = {P_NAND_CE, P_NAND_RB, 0}; + +/* + * Data structures for bf5xx nand flash controller driver + */ + +/* bf5xx nand info */ +struct bf5xx_nand_info { + /* mtd info */ + struct nand_hw_control controller; + struct mtd_info mtd; + struct nand_chip chip; + + /* platform info */ + struct bf5xx_nand_platform *platform; + + /* device info */ + struct device *device; + + /* DMA stuff */ + struct completion dma_completion; +}; + +/* + * Conversion functions + */ +static struct bf5xx_nand_info *mtd_to_nand_info(struct mtd_info *mtd) +{ + return container_of(mtd, struct bf5xx_nand_info, mtd); +} + +static struct bf5xx_nand_info *to_nand_info(struct platform_device *pdev) +{ + return platform_get_drvdata(pdev); +} + +static struct bf5xx_nand_platform *to_nand_plat(struct platform_device *pdev) +{ + return pdev->dev.platform_data; +} + +/* + * struct nand_chip interface function pointers + */ + +/* + * bf5xx_nand_hwcontrol + * + * Issue command and address cycles to the chip + */ +static void bf5xx_nand_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + if (cmd == NAND_CMD_NONE) + return; + + while (bfin_read_NFC_STAT() & WB_FULL) + cpu_relax(); + + if (ctrl & NAND_CLE) + bfin_write_NFC_CMD(cmd); + else + bfin_write_NFC_ADDR(cmd); + SSYNC(); +} + +/* + * bf5xx_nand_devready() + * + * returns 0 if the nand is busy, 1 if it is ready + */ +static int bf5xx_nand_devready(struct mtd_info *mtd) +{ + unsigned short val = bfin_read_NFC_IRQSTAT(); + + if ((val & NBUSYIRQ) == NBUSYIRQ) + return 1; + else + return 0; +} + +/* + * ECC functions + * These allow the bf5xx to use the controller's ECC + * generator block to ECC the data as it passes through + */ + +/* + * ECC error correction function + */ +static int bf5xx_nand_correct_data_256(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *calc_ecc) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + u32 syndrome[5]; + u32 calced, stored; + int i; + unsigned short failing_bit, failing_byte; + u_char data; + + calced = calc_ecc[0] | (calc_ecc[1] << 8) | (calc_ecc[2] << 16); + stored = read_ecc[0] | (read_ecc[1] << 8) | (read_ecc[2] << 16); + + syndrome[0] = (calced ^ stored); + + /* + * syndrome 0: all zero + * No error in data + * No action + */ + if (!syndrome[0] || !calced || !stored) + return 0; + + /* + * sysdrome 0: only one bit is one + * ECC data was incorrect + * No action + */ + if (hweight32(syndrome[0]) == 1) { + dev_err(info->device, "ECC data was incorrect!\n"); + return 1; + } + + syndrome[1] = (calced & 0x7FF) ^ (stored & 0x7FF); + syndrome[2] = (calced & 0x7FF) ^ ((calced >> 11) & 0x7FF); + syndrome[3] = (stored & 0x7FF) ^ ((stored >> 11) & 0x7FF); + syndrome[4] = syndrome[2] ^ syndrome[3]; + + for (i = 0; i < 5; i++) + dev_info(info->device, "syndrome[%d] 0x%08x\n", i, syndrome[i]); + + dev_info(info->device, + "calced[0x%08x], stored[0x%08x]\n", + calced, stored); + + /* + * sysdrome 0: exactly 11 bits are one, each parity + * and parity' pair is 1 & 0 or 0 & 1. + * 1-bit correctable error + * Correct the error + */ + if (hweight32(syndrome[0]) == 11 && syndrome[4] == 0x7FF) { + dev_info(info->device, + "1-bit correctable error, correct it.\n"); + dev_info(info->device, + "syndrome[1] 0x%08x\n", syndrome[1]); + + failing_bit = syndrome[1] & 0x7; + failing_byte = syndrome[1] >> 0x3; + data = *(dat + failing_byte); + data = data ^ (0x1 << failing_bit); + *(dat + failing_byte) = data; + + return 0; + } + + /* + * sysdrome 0: random data + * More than 1-bit error, non-correctable error + * Discard data, mark bad block + */ + dev_err(info->device, + "More than 1-bit error, non-correctable error.\n"); + dev_err(info->device, + "Please discard data, mark bad block\n"); + + return 1; +} + +static int bf5xx_nand_correct_data(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *calc_ecc) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + struct bf5xx_nand_platform *plat = info->platform; + unsigned short page_size = (plat->page_size ? 512 : 256); + int ret; + + ret = bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc); + + /* If page size is 512, correct second 256 bytes */ + if (page_size == 512) { + dat += 256; + read_ecc += 8; + calc_ecc += 8; + ret = bf5xx_nand_correct_data_256(mtd, dat, read_ecc, calc_ecc); + } + + return ret; +} + +static void bf5xx_nand_enable_hwecc(struct mtd_info *mtd, int mode) +{ + return; +} + +static int bf5xx_nand_calculate_ecc(struct mtd_info *mtd, + const u_char *dat, u_char *ecc_code) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + struct bf5xx_nand_platform *plat = info->platform; + u16 page_size = (plat->page_size ? 512 : 256); + u16 ecc0, ecc1; + u32 code[2]; + u8 *p; + int bytes = 3, i; + + /* first 4 bytes ECC code for 256 page size */ + ecc0 = bfin_read_NFC_ECC0(); + ecc1 = bfin_read_NFC_ECC1(); + + code[0] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11); + + dev_dbg(info->device, "returning ecc 0x%08x\n", code[0]); + + /* second 4 bytes ECC code for 512 page size */ + if (page_size == 512) { + ecc0 = bfin_read_NFC_ECC2(); + ecc1 = bfin_read_NFC_ECC3(); + code[1] = (ecc0 & 0x3FF) | ((ecc1 & 0x3FF) << 11); + bytes = 6; + dev_dbg(info->device, "returning ecc 0x%08x\n", code[1]); + } + + p = (u8 *)code; + for (i = 0; i < bytes; i++) + ecc_code[i] = p[i]; + + return 0; +} + +/* + * PIO mode for buffer writing and reading + */ +static void bf5xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) +{ + int i; + unsigned short val; + + /* + * Data reads are requested by first writing to NFC_DATA_RD + * and then reading back from NFC_READ. + */ + for (i = 0; i < len; i++) { + while (bfin_read_NFC_STAT() & WB_FULL) + cpu_relax(); + + /* Contents do not matter */ + bfin_write_NFC_DATA_RD(0x0000); + SSYNC(); + + while ((bfin_read_NFC_IRQSTAT() & RD_RDY) != RD_RDY) + cpu_relax(); + + buf[i] = bfin_read_NFC_READ(); + + val = bfin_read_NFC_IRQSTAT(); + val |= RD_RDY; + bfin_write_NFC_IRQSTAT(val); + SSYNC(); + } +} + +static uint8_t bf5xx_nand_read_byte(struct mtd_info *mtd) +{ + uint8_t val; + + bf5xx_nand_read_buf(mtd, &val, 1); + + return val; +} + +static void bf5xx_nand_write_buf(struct mtd_info *mtd, + const uint8_t *buf, int len) +{ + int i; + + for (i = 0; i < len; i++) { + while (bfin_read_NFC_STAT() & WB_FULL) + cpu_relax(); + + bfin_write_NFC_DATA_WR(buf[i]); + SSYNC(); + } +} + +static void bf5xx_nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) +{ + int i; + u16 *p = (u16 *) buf; + len >>= 1; + + /* + * Data reads are requested by first writing to NFC_DATA_RD + * and then reading back from NFC_READ. + */ + bfin_write_NFC_DATA_RD(0x5555); + + SSYNC(); + + for (i = 0; i < len; i++) + p[i] = bfin_read_NFC_READ(); +} + +static void bf5xx_nand_write_buf16(struct mtd_info *mtd, + const uint8_t *buf, int len) +{ + int i; + u16 *p = (u16 *) buf; + len >>= 1; + + for (i = 0; i < len; i++) + bfin_write_NFC_DATA_WR(p[i]); + + SSYNC(); +} + +/* + * DMA functions for buffer writing and reading + */ +static irqreturn_t bf5xx_nand_dma_irq(int irq, void *dev_id) +{ + struct bf5xx_nand_info *info = dev_id; + + clear_dma_irqstat(CH_NFC); + disable_dma(CH_NFC); + complete(&info->dma_completion); + + return IRQ_HANDLED; +} + +static int bf5xx_nand_dma_rw(struct mtd_info *mtd, + uint8_t *buf, int is_read) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + struct bf5xx_nand_platform *plat = info->platform; + unsigned short page_size = (plat->page_size ? 512 : 256); + unsigned short val; + + dev_dbg(info->device, " mtd->%p, buf->%p, is_read %d\n", + mtd, buf, is_read); + + /* + * Before starting a dma transfer, be sure to invalidate/flush + * the cache over the address range of your DMA buffer to + * prevent cache coherency problems. Otherwise very subtle bugs + * can be introduced to your driver. + */ + if (is_read) + invalidate_dcache_range((unsigned int)buf, + (unsigned int)(buf + page_size)); + else + flush_dcache_range((unsigned int)buf, + (unsigned int)(buf + page_size)); + + /* + * This register must be written before each page is + * transferred to generate the correct ECC register + * values. + */ + bfin_write_NFC_RST(0x1); + SSYNC(); + + disable_dma(CH_NFC); + clear_dma_irqstat(CH_NFC); + + /* setup DMA register with Blackfin DMA API */ + set_dma_config(CH_NFC, 0x0); + set_dma_start_addr(CH_NFC, (unsigned long) buf); + set_dma_x_count(CH_NFC, (page_size >> 2)); + set_dma_x_modify(CH_NFC, 4); + + /* setup write or read operation */ + val = DI_EN | WDSIZE_32; + if (is_read) + val |= WNR; + set_dma_config(CH_NFC, val); + enable_dma(CH_NFC); + + /* Start PAGE read/write operation */ + if (is_read) + bfin_write_NFC_PGCTL(0x1); + else + bfin_write_NFC_PGCTL(0x2); + wait_for_completion(&info->dma_completion); + + return 0; +} + +static void bf5xx_nand_dma_read_buf(struct mtd_info *mtd, + uint8_t *buf, int len) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + struct bf5xx_nand_platform *plat = info->platform; + unsigned short page_size = (plat->page_size ? 512 : 256); + + dev_dbg(info->device, "mtd->%p, buf->%p, int %d\n", mtd, buf, len); + + if (len == page_size) + bf5xx_nand_dma_rw(mtd, buf, 1); + else + bf5xx_nand_read_buf(mtd, buf, len); +} + +static void bf5xx_nand_dma_write_buf(struct mtd_info *mtd, + const uint8_t *buf, int len) +{ + struct bf5xx_nand_info *info = mtd_to_nand_info(mtd); + struct bf5xx_nand_platform *plat = info->platform; + unsigned short page_size = (plat->page_size ? 512 : 256); + + dev_dbg(info->device, "mtd->%p, buf->%p, len %d\n", mtd, buf, len); + + if (len == page_size) + bf5xx_nand_dma_rw(mtd, (uint8_t *)buf, 0); + else + bf5xx_nand_write_buf(mtd, buf, len); +} + +/* + * System initialization functions + */ + +static int bf5xx_nand_dma_init(struct bf5xx_nand_info *info) +{ + int ret; + unsigned short val; + + /* Do not use dma */ + if (!hardware_ecc) + return 0; + + init_completion(&info->dma_completion); + + /* Setup DMAC1 channel mux for NFC which shared with SDH */ + val = bfin_read_DMAC1_PERIMUX(); + val &= 0xFFFE; + bfin_write_DMAC1_PERIMUX(val); + SSYNC(); + + /* Request NFC DMA channel */ + ret = request_dma(CH_NFC, "BF5XX NFC driver"); + if (ret < 0) { + dev_err(info->device, " unable to get DMA channel\n"); + return ret; + } + + set_dma_callback(CH_NFC, (void *) bf5xx_nand_dma_irq, (void *) info); + + /* Turn off the DMA channel first */ + disable_dma(CH_NFC); + return 0; +} + +/* + * BF5XX NFC hardware initialization + * - pin mux setup + * - clear interrupt status + */ +static int bf5xx_nand_hw_init(struct bf5xx_nand_info *info) +{ + int err = 0; + unsigned short val; + struct bf5xx_nand_platform *plat = info->platform; + + /* setup NFC_CTL register */ + dev_info(info->device, + "page_size=%d, data_width=%d, wr_dly=%d, rd_dly=%d\n", + (plat->page_size ? 512 : 256), + (plat->data_width ? 16 : 8), + plat->wr_dly, plat->rd_dly); + + val = (plat->page_size << NFC_PG_SIZE_OFFSET) | + (plat->data_width << NFC_NWIDTH_OFFSET) | + (plat->rd_dly << NFC_RDDLY_OFFSET) | + (plat->rd_dly << NFC_WRDLY_OFFSET); + dev_dbg(info->device, "NFC_CTL is 0x%04x\n", val); + + bfin_write_NFC_CTL(val); + SSYNC(); + + /* clear interrupt status */ + bfin_write_NFC_IRQMASK(0x0); + SSYNC(); + val = bfin_read_NFC_IRQSTAT(); + bfin_write_NFC_IRQSTAT(val); + SSYNC(); + + if (peripheral_request_list(bfin_nfc_pin_req, DRV_NAME)) { + printk(KERN_ERR DRV_NAME + ": Requesting Peripherals failed\n"); + return -EFAULT; + } + + /* DMA initialization */ + if (bf5xx_nand_dma_init(info)) + err = -ENXIO; + + return err; +} + +/* + * Device management interface + */ +static int bf5xx_nand_add_partition(struct bf5xx_nand_info *info) +{ + struct mtd_info *mtd = &info->mtd; + +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *parts = info->platform->partitions; + int nr = info->platform->nr_partitions; + + return add_mtd_partitions(mtd, parts, nr); +#else + return add_mtd_device(mtd); +#endif +} + +static int bf5xx_nand_remove(struct platform_device *pdev) +{ + struct bf5xx_nand_info *info = to_nand_info(pdev); + struct mtd_info *mtd = NULL; + + platform_set_drvdata(pdev, NULL); + + /* first thing we need to do is release all our mtds + * and their partitions, then go through freeing the + * resources used + */ + mtd = &info->mtd; + if (mtd) { + nand_release(mtd); + kfree(mtd); + } + + peripheral_free_list(bfin_nfc_pin_req); + + /* free the common resources */ + kfree(info); + + return 0; +} + +/* + * bf5xx_nand_probe + * + * called by device layer when it finds a device matching + * one our driver can handled. This code checks to see if + * it can allocate all necessary resources then calls the + * nand layer to look for devices + */ +static int bf5xx_nand_probe(struct platform_device *pdev) +{ + struct bf5xx_nand_platform *plat = to_nand_plat(pdev); + struct bf5xx_nand_info *info = NULL; + struct nand_chip *chip = NULL; + struct mtd_info *mtd = NULL; + int err = 0; + + dev_dbg(&pdev->dev, "(%p)\n", pdev); + + if (!plat) { + dev_err(&pdev->dev, "no platform specific information\n"); + goto exit_error; + } + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (info == NULL) { + dev_err(&pdev->dev, "no memory for flash info\n"); + err = -ENOMEM; + goto exit_error; + } + + platform_set_drvdata(pdev, info); + + spin_lock_init(&info->controller.lock); + init_waitqueue_head(&info->controller.wq); + + info->device = &pdev->dev; + info->platform = plat; + + /* initialise chip data struct */ + chip = &info->chip; + + if (plat->data_width) + chip->options |= NAND_BUSWIDTH_16; + + chip->options |= NAND_CACHEPRG | NAND_SKIP_BBTSCAN; + + chip->read_buf = (plat->data_width) ? + bf5xx_nand_read_buf16 : bf5xx_nand_read_buf; + chip->write_buf = (plat->data_width) ? + bf5xx_nand_write_buf16 : bf5xx_nand_write_buf; + + chip->read_byte = bf5xx_nand_read_byte; + + chip->cmd_ctrl = bf5xx_nand_hwcontrol; + chip->dev_ready = bf5xx_nand_devready; + + chip->priv = &info->mtd; + chip->controller = &info->controller; + + chip->IO_ADDR_R = (void __iomem *) NFC_READ; + chip->IO_ADDR_W = (void __iomem *) NFC_DATA_WR; + + chip->chip_delay = 0; + + /* initialise mtd info data struct */ + mtd = &info->mtd; + mtd->priv = chip; + mtd->owner = THIS_MODULE; + + /* initialise the hardware */ + err = bf5xx_nand_hw_init(info); + if (err != 0) + goto exit_error; + + /* setup hardware ECC data struct */ + if (hardware_ecc) { + if (plat->page_size == NFC_PG_SIZE_256) { + chip->ecc.bytes = 3; + chip->ecc.size = 256; + } else if (plat->page_size == NFC_PG_SIZE_512) { + chip->ecc.bytes = 6; + chip->ecc.size = 512; + } + + chip->read_buf = bf5xx_nand_dma_read_buf; + chip->write_buf = bf5xx_nand_dma_write_buf; + chip->ecc.calculate = bf5xx_nand_calculate_ecc; + chip->ecc.correct = bf5xx_nand_correct_data; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.hwctl = bf5xx_nand_enable_hwecc; + } else { + chip->ecc.mode = NAND_ECC_SOFT; + } + + /* scan hardware nand chip and setup mtd info data struct */ + if (nand_scan(mtd, 1)) { + err = -ENXIO; + goto exit_error; + } + + /* add NAND partition */ + bf5xx_nand_add_partition(info); + + dev_dbg(&pdev->dev, "initialised ok\n"); + return 0; + +exit_error: + bf5xx_nand_remove(pdev); + + if (err == 0) + err = -EINVAL; + return err; +} + +/* PM Support */ +#ifdef CONFIG_PM + +static int bf5xx_nand_suspend(struct platform_device *dev, pm_message_t pm) +{ + struct bf5xx_nand_info *info = platform_get_drvdata(dev); + + return 0; +} + +static int bf5xx_nand_resume(struct platform_device *dev) +{ + struct bf5xx_nand_info *info = platform_get_drvdata(dev); + + if (info) + bf5xx_nand_hw_init(info); + + return 0; +} + +#else +#define bf5xx_nand_suspend NULL +#define bf5xx_nand_resume NULL +#endif + +/* driver device registration */ +static struct platform_driver bf5xx_nand_driver = { + .probe = bf5xx_nand_probe, + .remove = bf5xx_nand_remove, + .suspend = bf5xx_nand_suspend, + .resume = bf5xx_nand_resume, + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init bf5xx_nand_init(void) +{ + printk(KERN_INFO "%s, Version %s (c) 2007 Analog Devices, Inc.\n", + DRV_DESC, DRV_VERSION); + + return platform_driver_register(&bf5xx_nand_driver); +} + +static void __exit bf5xx_nand_exit(void) +{ + platform_driver_unregister(&bf5xx_nand_driver); +} + +module_init(bf5xx_nand_init); +module_exit(bf5xx_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRV_AUTHOR); +MODULE_DESCRIPTION(DRV_DESC); diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 6f32a35eb106..e2832d0b9899 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -623,6 +623,11 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, uint32_t ctrl; int err = 0; + /* Very old versions shared the same PCI ident for all three + functions on the chip. Verify the class too... */ + if ((pdev->class >> 8) != PCI_CLASS_MEMORY_FLASH) + return -ENODEV; + err = pci_enable_device(pdev); if (err) return err; @@ -816,21 +821,57 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev) } static struct pci_device_id cafe_nand_tbl[] = { - { 0x11ab, 0x4100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MEMORY_FLASH << 8, 0xFFFF0 }, - { 0, } + { 0x11ab, 0x4100, PCI_ANY_ID, PCI_ANY_ID }, + { } }; MODULE_DEVICE_TABLE(pci, cafe_nand_tbl); +static int cafe_nand_resume(struct pci_dev *pdev) +{ + uint32_t ctrl; + struct mtd_info *mtd = pci_get_drvdata(pdev); + struct cafe_priv *cafe = mtd->priv; + + /* Start off by resetting the NAND controller completely */ + cafe_writel(cafe, 1, NAND_RESET); + cafe_writel(cafe, 0, NAND_RESET); + cafe_writel(cafe, 0xffffffff, NAND_IRQ_MASK); + + /* Restore timing configuration */ + cafe_writel(cafe, timing[0], NAND_TIMING1); + cafe_writel(cafe, timing[1], NAND_TIMING2); + cafe_writel(cafe, timing[2], NAND_TIMING3); + + /* Disable master reset, enable NAND clock */ + ctrl = cafe_readl(cafe, GLOBAL_CTRL); + ctrl &= 0xffffeff0; + ctrl |= 0x00007000; + cafe_writel(cafe, ctrl | 0x05, GLOBAL_CTRL); + cafe_writel(cafe, ctrl | 0x0a, GLOBAL_CTRL); + cafe_writel(cafe, 0, NAND_DMA_CTRL); + cafe_writel(cafe, 0x7006, GLOBAL_CTRL); + cafe_writel(cafe, 0x700a, GLOBAL_CTRL); + + /* Set up DMA address */ + cafe_writel(cafe, cafe->dmaaddr & 0xffffffff, NAND_DMA_ADDR0); + if (sizeof(cafe->dmaaddr) > 4) + /* Shift in two parts to shut the compiler up */ + cafe_writel(cafe, (cafe->dmaaddr >> 16) >> 16, NAND_DMA_ADDR1); + else + cafe_writel(cafe, 0, NAND_DMA_ADDR1); + + /* Enable NAND IRQ in global IRQ mask register */ + cafe_writel(cafe, 0x80000007, GLOBAL_IRQ_MASK); + return 0; +} + static struct pci_driver cafe_nand_pci_driver = { .name = "CAFÉ NAND", .id_table = cafe_nand_tbl, .probe = cafe_nand_probe, .remove = __devexit_p(cafe_nand_remove), -#ifdef CONFIG_PMx - .suspend = cafe_nand_suspend, .resume = cafe_nand_resume, -#endif }; static int cafe_nand_init(void) diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index e96259f22cca..ab9f5c5db38d 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -56,8 +56,6 @@ static unsigned long __initdata doc_locations[] = { #endif /* CONFIG_MTD_DOCPROBE_HIGH */ #elif defined(__PPC__) 0xe4000000, -#elif defined(CONFIG_MOMENCO_OCELOT_G) - 0xff000000, #else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c index 7e9afc4c7757..bed87290decc 100644 --- a/drivers/mtd/nand/excite_nandflash.c +++ b/drivers/mtd/nand/excite_nandflash.c @@ -27,7 +27,6 @@ #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/err.h> -#include <linux/kernel.h> #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 24ac6778b1a8..b4e0e7723894 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -7,7 +7,7 @@ * Basic support for AG-AND chips is provided. * * Additional technical information is available on - * http://www.linux-mtd.infradead.org/tech/nand.html + * http://www.linux-mtd.infradead.org/doc/nand.html * * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) * 2002-2006 Thomas Gleixner (tglx@linutronix.de) @@ -2069,13 +2069,14 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, erase_exit: ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; - /* Do call back function */ - if (!ret) - mtd_erase_callback(instr); /* Deselect and wake up anyone waiting on the device */ nand_release_device(mtd); + /* Do call back function */ + if (!ret) + mtd_erase_callback(instr); + /* * If BBT requires refresh and erase was successful, rewrite any * selected bad block tables diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index 2fc674a190cf..a3e3ab0185d5 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -141,6 +141,7 @@ struct nand_manufacturers nand_manuf_ids[] = { {NAND_MFR_STMICRO, "ST Micro"}, {NAND_MFR_HYNIX, "Hynix"}, {NAND_MFR_MICRON, "Micron"}, + {NAND_MFR_AMD, "AMD"}, {0x0, "Unknown"} }; diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 205df0f771fe..a7574807dc46 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -1272,7 +1272,13 @@ static int prog_page(struct nandsim *ns, int num) mypage = NS_GET_PAGE(ns); if (mypage->byte == NULL) { NS_DBG("prog_page: allocating page %d\n", ns->regs.row); - mypage->byte = kmalloc(ns->geom.pgszoob, GFP_KERNEL); + /* + * We allocate memory with GFP_NOFS because a flash FS may + * utilize this. If it is holding an FS lock, then gets here, + * then kmalloc runs writeback which goes to the FS again + * and deadlocks. This was seen in practice. + */ + mypage->byte = kmalloc(ns->geom.pgszoob, GFP_NOFS); if (mypage->byte == NULL) { NS_ERR("prog_page: error allocating memory for page %d\n", ns->regs.row); return -1; diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index fd7a8d5ba29a..1c0e89f00e8d 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -24,7 +24,11 @@ #include <linux/platform_device.h> #include <asm/io.h> +#ifdef CONFIG_40x +#include <asm/ibm405.h> +#else #include <asm/ibm44x.h> +#endif struct ndfc_nand_mtd { struct mtd_info mtd; @@ -230,7 +234,11 @@ static int ndfc_nand_probe(struct platform_device *pdev) struct ndfc_controller *ndfc = &ndfc_ctrl; unsigned long long phys = settings->ndfc_erpn | res->start; +#ifndef CONFIG_PHYS_64BIT + ndfc->ndfcbase = ioremap((phys_addr_t)phys, res->end - res->start + 1); +#else ndfc->ndfcbase = ioremap64(phys, res->end - res->start + 1); +#endif if (!ndfc->ndfcbase) { printk(KERN_ERR "NDFC: ioremap failed\n"); return -EIO; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 5fac4c421a20..b79a9cf2d162 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -60,8 +60,8 @@ #include <asm/io.h> -#include <asm/arch/regs-nand.h> -#include <asm/arch/nand.h> +#include <asm/plat-s3c/regs-nand.h> +#include <asm/plat-s3c/nand.h> #ifdef CONFIG_MTD_NAND_S3C2410_HWECC static int hardware_ecc = 1; diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig index c257d397d08a..cb41cbca64f7 100644 --- a/drivers/mtd/onenand/Kconfig +++ b/drivers/mtd/onenand/Kconfig @@ -40,4 +40,27 @@ config MTD_ONENAND_OTP OTP block is fully-guaranteed to be a valid block. +config MTD_ONENAND_2X_PROGRAM + bool "OneNAND 2X program support" + help + The 2X Program is an extension of Program Operation. + Since the device is equipped with two DataRAMs, and two-plane NAND + Flash memory array, these two component enables simultaneous program + of 4KiB. Plane1 has only even blocks such as block0, block2, block4 + while Plane2 has only odd blocks such as block1, block3, block5. + So MTD regards it as 4KiB page size and 256KiB block size + + Now the following chips support it. (KFXXX16Q2M) + Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M, + Mux: KFM2G16Q2M, KFN4G16Q2M, + + And more recent chips + +config MTD_ONENAND_SIM + tristate "OneNAND simulator support" + depends on MTD_PARTITIONS + help + The simulator may simulate various OneNAND flash chips for the + OneNAND MTD layer. + endif # MTD_ONENAND diff --git a/drivers/mtd/onenand/Makefile b/drivers/mtd/onenand/Makefile index 269cfe467345..4d2eacfd7e11 100644 --- a/drivers/mtd/onenand/Makefile +++ b/drivers/mtd/onenand/Makefile @@ -8,4 +8,7 @@ obj-$(CONFIG_MTD_ONENAND) += onenand.o # Board specific. obj-$(CONFIG_MTD_ONENAND_GENERIC) += generic.o +# Simulator +obj-$(CONFIG_MTD_ONENAND_SIM) += onenand_sim.o + onenand-objs = onenand_base.o onenand_bbt.o diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 0537fac8de74..b2c40f67db83 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -206,6 +206,15 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le default: block = (int) (addr >> this->erase_shift); page = (int) (addr >> this->page_shift); + + if (ONENAND_IS_2PLANE(this)) { + /* Make the even block number */ + block &= ~1; + /* Is it the odd plane? */ + if (addr & this->writesize) + block++; + page >>= 1; + } page &= this->page_mask; break; } @@ -216,8 +225,12 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le value = onenand_bufferram_address(this, block); this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); - /* Switch to the next data buffer */ - ONENAND_SET_NEXT_BUFFERRAM(this); + if (ONENAND_IS_2PLANE(this)) + /* It is always BufferRAM0 */ + ONENAND_SET_BUFFERRAM0(this); + else + /* Switch to the next data buffer */ + ONENAND_SET_NEXT_BUFFERRAM(this); return 0; } @@ -247,6 +260,8 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le break; default: + if (ONENAND_IS_2PLANE(this) && cmd == ONENAND_CMD_PROG) + cmd = ONENAND_CMD_2X_PROG; dataram = ONENAND_CURRENT_BUFFERRAM(this); break; } @@ -318,12 +333,14 @@ static int onenand_wait(struct mtd_info *mtd, int state) if (interrupt & ONENAND_INT_READ) { int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); if (ecc) { - printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc); if (ecc & ONENAND_ECC_2BIT_ALL) { + printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc); mtd->ecc_stats.failed++; return ecc; - } else if (ecc & ONENAND_ECC_1BIT_ALL) + } else if (ecc & ONENAND_ECC_1BIT_ALL) { + printk(KERN_INFO "onenand_wait: correctable ECC error = 0x%04x\n", ecc); mtd->ecc_stats.corrected++; + } } } else if (state == FL_READING) { printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); @@ -445,8 +462,9 @@ static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area) struct onenand_chip *this = mtd->priv; if (ONENAND_CURRENT_BUFFERRAM(this)) { + /* Note: the 'this->writesize' is a real page size */ if (area == ONENAND_DATARAM) - return mtd->writesize; + return this->writesize; if (area == ONENAND_SPARERAM) return mtd->oobsize; } @@ -572,6 +590,30 @@ static int onenand_write_bufferram(struct mtd_info *mtd, int area, } /** + * onenand_get_2x_blockpage - [GENERIC] Get blockpage at 2x program mode + * @param mtd MTD data structure + * @param addr address to check + * @return blockpage address + * + * Get blockpage address at 2x program mode + */ +static int onenand_get_2x_blockpage(struct mtd_info *mtd, loff_t addr) +{ + struct onenand_chip *this = mtd->priv; + int blockpage, block, page; + + /* Calculate the even block number */ + block = (int) (addr >> this->erase_shift) & ~1; + /* Is it the odd plane? */ + if (addr & this->writesize) + block++; + page = (int) (addr >> (this->page_shift + 1)) & this->page_mask; + blockpage = (block << 7) | page; + + return blockpage; +} + +/** * onenand_check_bufferram - [GENERIC] Check BufferRAM information * @param mtd MTD data structure * @param addr address to check @@ -585,7 +627,10 @@ static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) int blockpage, found = 0; unsigned int i; - blockpage = (int) (addr >> this->page_shift); + if (ONENAND_IS_2PLANE(this)) + blockpage = onenand_get_2x_blockpage(mtd, addr); + else + blockpage = (int) (addr >> this->page_shift); /* Is there valid data? */ i = ONENAND_CURRENT_BUFFERRAM(this); @@ -625,7 +670,10 @@ static void onenand_update_bufferram(struct mtd_info *mtd, loff_t addr, int blockpage; unsigned int i; - blockpage = (int) (addr >> this->page_shift); + if (ONENAND_IS_2PLANE(this)) + blockpage = onenand_get_2x_blockpage(mtd, addr); + else + blockpage = (int) (addr >> this->page_shift); /* Invalidate another BufferRAM */ i = ONENAND_NEXT_BUFFERRAM(this); @@ -717,36 +765,86 @@ static void onenand_release_device(struct mtd_info *mtd) } /** - * onenand_read - [MTD Interface] Read data from flash + * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer + * @param mtd MTD device structure + * @param buf destination address + * @param column oob offset to read from + * @param thislen oob length to read + */ +static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int column, + int thislen) +{ + struct onenand_chip *this = mtd->priv; + struct nand_oobfree *free; + int readcol = column; + int readend = column + thislen; + int lastgap = 0; + unsigned int i; + uint8_t *oob_buf = this->oob_buf; + + free = this->ecclayout->oobfree; + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { + if (readcol >= lastgap) + readcol += free->offset - lastgap; + if (readend >= lastgap) + readend += free->offset - lastgap; + lastgap = free->offset + free->length; + } + this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); + free = this->ecclayout->oobfree; + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { + int free_end = free->offset + free->length; + if (free->offset < readend && free_end > readcol) { + int st = max_t(int,free->offset,readcol); + int ed = min_t(int,free_end,readend); + int n = ed - st; + memcpy(buf, oob_buf + st, n); + buf += n; + } else if (column == 0) + break; + } + return 0; +} + +/** + * onenand_read_ops_nolock - [OneNAND Interface] OneNAND read main and/or out-of-band * @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 ops: oob operation description structure * - * Read with ecc -*/ -static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) + * OneNAND read main and/or out-of-band data + */ +static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { struct onenand_chip *this = mtd->priv; struct mtd_ecc_stats stats; - int read = 0, column; - int thislen; + size_t len = ops->len; + size_t ooblen = ops->ooblen; + u_char *buf = ops->datbuf; + u_char *oobbuf = ops->oobbuf; + int read = 0, column, thislen; + int oobread = 0, oobcolumn, thisooblen, oobsize; int ret = 0, boundary = 0; + int writesize = this->writesize; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_read: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + + if (ops->mode == MTD_OOB_AUTO) + oobsize = this->ecclayout->oobavail; + else + oobsize = mtd->oobsize; + + oobcolumn = from & (mtd->oobsize - 1); /* Do not allow reads past end of device */ if ((from + len) > mtd->size) { - printk(KERN_ERR "onenand_read: Attempt read beyond end of device\n"); - *retlen = 0; + printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n"); + ops->retlen = 0; + ops->oobretlen = 0; return -EINVAL; } - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_READING); - stats = mtd->ecc_stats; /* Read-while-load method */ @@ -754,22 +852,22 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, /* Do first load to bufferRAM */ if (read < len) { if (!onenand_check_bufferram(mtd, from)) { - this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize); + this->command(mtd, ONENAND_CMD_READ, from, writesize); ret = this->wait(mtd, FL_READING); onenand_update_bufferram(mtd, from, !ret); } } - thislen = min_t(int, mtd->writesize, len - read); - column = from & (mtd->writesize - 1); - if (column + thislen > mtd->writesize) - thislen = mtd->writesize - column; + thislen = min_t(int, writesize, len - read); + column = from & (writesize - 1); + if (column + thislen > writesize) + thislen = writesize - column; while (!ret) { /* If there is more to load then start next load */ from += thislen; if (read + thislen < len) { - this->command(mtd, ONENAND_CMD_READ, from, mtd->writesize); + this->command(mtd, ONENAND_CMD_READ, from, writesize); /* * Chip boundary handling in DDP * Now we issued chip 1 read and pointed chip 1 @@ -785,6 +883,21 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, } /* While load is going, read from last bufferRAM */ this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen); + + /* Read oob area if needed */ + if (oobbuf) { + thisooblen = oobsize - oobcolumn; + thisooblen = min_t(int, thisooblen, ooblen - oobread); + + if (ops->mode == MTD_OOB_AUTO) + onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); + else + this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); + oobread += thisooblen; + oobbuf += thisooblen; + oobcolumn = 0; + } + /* See if we are done */ read += thislen; if (read == len) @@ -794,7 +907,7 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, this->write_word(ONENAND_DDP_CHIP1, this->base + ONENAND_REG_START_ADDRESS2); ONENAND_SET_NEXT_BUFFERRAM(this); buf += thislen; - thislen = min_t(int, mtd->writesize, len - read); + thislen = min_t(int, writesize, len - read); column = 0; cond_resched(); /* Now wait for load */ @@ -802,15 +915,13 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, onenand_update_bufferram(mtd, from, !ret); } - /* Deselect and wake up anyone waiting on the device */ - onenand_release_device(mtd); - /* * Return success, if no ECC failures, else -EBADMSG * fs driver will take care of that, because * retlen == desired len and result == -EBADMSG */ - *retlen = read; + ops->retlen = read; + ops->oobretlen = oobread; if (mtd->ecc_stats.failed - stats.failed) return -EBADMSG; @@ -822,69 +933,29 @@ static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, } /** - * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer - * @param mtd MTD device structure - * @param buf destination address - * @param column oob offset to read from - * @param thislen oob length to read - */ -static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int column, - int thislen) -{ - struct onenand_chip *this = mtd->priv; - struct nand_oobfree *free; - int readcol = column; - int readend = column + thislen; - int lastgap = 0; - unsigned int i; - uint8_t *oob_buf = this->oob_buf; - - free = this->ecclayout->oobfree; - for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { - if (readcol >= lastgap) - readcol += free->offset - lastgap; - if (readend >= lastgap) - readend += free->offset - lastgap; - lastgap = free->offset + free->length; - } - this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); - free = this->ecclayout->oobfree; - for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { - int free_end = free->offset + free->length; - if (free->offset < readend && free_end > readcol) { - int st = max_t(int,free->offset,readcol); - int ed = min_t(int,free_end,readend); - int n = ed - st; - memcpy(buf, oob_buf + st, n); - buf += n; - } else if (column == 0) - break; - } - return 0; -} - -/** - * onenand_do_read_oob - [MTD Interface] OneNAND read out-of-band + * onenand_read_oob_nolock - [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 - * @param retlen pointer to variable to store the number of read bytes - * @param buf the databuffer to put data - * @param mode operation mode + * @param ops: oob operation description structure * * OneNAND read out-of-band data from the spare area */ -static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf, mtd_oob_mode_t mode) +static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) { struct onenand_chip *this = mtd->priv; int read = 0, thislen, column, oobsize; + size_t len = ops->ooblen; + mtd_oob_mode_t mode = ops->mode; + u_char *buf = ops->oobbuf; int ret = 0; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + from += ops->ooboffs; + + DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); /* Initialize return length value */ - *retlen = 0; + ops->oobretlen = 0; if (mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -894,7 +965,7 @@ static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, column = from & (mtd->oobsize - 1); if (unlikely(column >= oobsize)) { - printk(KERN_ERR "onenand_read_oob: Attempted to start read outside oob\n"); + printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n"); return -EINVAL; } @@ -902,13 +973,10 @@ static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, if (unlikely(from >= mtd->size || column + len > ((mtd->size >> this->page_shift) - (from >> this->page_shift)) * oobsize)) { - printk(KERN_ERR "onenand_read_oob: Attempted to read beyond end of device\n"); + printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n"); return -EINVAL; } - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_READING); - while (read < len) { cond_resched(); @@ -928,7 +996,7 @@ static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); if (ret) { - printk(KERN_ERR "onenand_read_oob: read failed = 0x%x\n", ret); + printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret); break; } @@ -947,22 +1015,52 @@ static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, } } - /* Deselect and wake up anyone waiting on the device */ + ops->oobretlen = read; + return ret; +} + +/** + * 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 + * + * Read with ecc +*/ +static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct mtd_oob_ops ops = { + .len = len, + .ooblen = 0, + .datbuf = buf, + .oobbuf = NULL, + }; + int ret; + + onenand_get_device(mtd, FL_READING); + ret = onenand_read_ops_nolock(mtd, from, &ops); onenand_release_device(mtd); - *retlen = read; + *retlen = ops.retlen; return ret; } /** - * onenand_read_oob - [MTD Interface] NAND write data and/or out-of-band + * onenand_read_oob - [MTD Interface] Read main and/or out-of-band * @param mtd: MTD device structure * @param from: offset to read from * @param ops: oob operation description structure + + * Read main and/or out-of-band */ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { + int ret; + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_AUTO: @@ -972,8 +1070,15 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, default: return -EINVAL; } - return onenand_do_read_oob(mtd, from + ops->ooboffs, ops->ooblen, - &ops->oobretlen, ops->oobbuf, ops->mode); + + onenand_get_device(mtd, FL_READING); + if (ops->datbuf) + ret = onenand_read_ops_nolock(mtd, from, ops); + else + ret = onenand_read_oob_nolock(mtd, from, ops); + onenand_release_device(mtd); + + return ret; } /** @@ -1079,7 +1184,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, /* Read more? */ if (read < len) { /* Update Page size */ - from += mtd->writesize; + from += this->writesize; column = 0; } } @@ -1097,7 +1202,6 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, * @param mtd MTD device structure * @param buf the databuffer to verify * @param to offset to read from - * */ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) { @@ -1125,7 +1229,6 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to * @param buf the databuffer to verify * @param addr offset to read from * @param len number of bytes to read and compare - * */ static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) { @@ -1135,12 +1238,12 @@ static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, int thislen, column; while (len != 0) { - thislen = min_t(int, mtd->writesize, len); - column = addr & (mtd->writesize - 1); - if (column + thislen > mtd->writesize) - thislen = mtd->writesize - column; + thislen = min_t(int, this->writesize, len); + column = addr & (this->writesize - 1); + if (column + thislen > this->writesize) + thislen = this->writesize - column; - this->command(mtd, ONENAND_CMD_READ, addr, mtd->writesize); + this->command(mtd, ONENAND_CMD_READ, addr, this->writesize); onenand_update_bufferram(mtd, addr, 0); @@ -1171,50 +1274,101 @@ static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, #define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0) /** - * onenand_write - [MTD Interface] write buffer to FLASH + * onenand_fill_auto_oob - [Internal] oob auto-placement transfer + * @param mtd MTD device structure + * @param oob_buf oob buffer + * @param buf source address + * @param column oob offset to write to + * @param thislen oob length to write + */ +static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, + const u_char *buf, int column, int thislen) +{ + struct onenand_chip *this = mtd->priv; + struct nand_oobfree *free; + int writecol = column; + int writeend = column + thislen; + int lastgap = 0; + unsigned int i; + + free = this->ecclayout->oobfree; + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { + if (writecol >= lastgap) + writecol += free->offset - lastgap; + if (writeend >= lastgap) + writeend += free->offset - lastgap; + lastgap = free->offset + free->length; + } + free = this->ecclayout->oobfree; + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { + int free_end = free->offset + free->length; + if (free->offset < writeend && free_end > writecol) { + int st = max_t(int,free->offset,writecol); + int ed = min_t(int,free_end,writeend); + int n = ed - st; + memcpy(oob_buf + st, buf, n); + buf += n; + } else if (column == 0) + break; + } + return 0; +} + +/** + * onenand_write_ops_nolock - [OneNAND Interface] write main and/or out-of-band * @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 ops oob operation description structure * - * Write with ECC + * Write main and/or oob with ECC */ -static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) +static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) { struct onenand_chip *this = mtd->priv; - int written = 0; + int written = 0, column, thislen, subpage; + int oobwritten = 0, oobcolumn, thisooblen, oobsize; + size_t len = ops->len; + size_t ooblen = ops->ooblen; + const u_char *buf = ops->datbuf; + const u_char *oob = ops->oobbuf; + u_char *oobbuf; int ret = 0; - int column, subpage; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_write: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ - *retlen = 0; + ops->retlen = 0; + ops->oobretlen = 0; /* Do not allow writes past end of device */ if (unlikely((to + len) > mtd->size)) { - printk(KERN_ERR "onenand_write: Attempt write to past end of device\n"); + printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n"); return -EINVAL; } /* Reject writes, which are not page aligned */ if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(len))) { - printk(KERN_ERR "onenand_write: Attempt to write not page aligned data\n"); + printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n"); return -EINVAL; } - column = to & (mtd->writesize - 1); + if (ops->mode == MTD_OOB_AUTO) + oobsize = this->ecclayout->oobavail; + else + oobsize = mtd->oobsize; - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_WRITING); + oobcolumn = to & (mtd->oobsize - 1); + + column = to & (mtd->writesize - 1); /* Loop until all data write */ while (written < len) { - int thislen = min_t(int, mtd->writesize - column, len - written); u_char *wbuf = (u_char *) buf; + thislen = min_t(int, mtd->writesize - column, len - written); + thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); + cond_resched(); this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); @@ -1228,7 +1382,25 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, } this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); - this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); + + if (oob) { + oobbuf = this->oob_buf; + + /* We send data to spare ram with oobsize + * to prevent byte access */ + memset(oobbuf, 0xff, mtd->oobsize); + if (ops->mode == MTD_OOB_AUTO) + onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); + else + memcpy(oobbuf + oobcolumn, oob, thisooblen); + + oobwritten += thisooblen; + oob += thisooblen; + oobcolumn = 0; + } else + oobbuf = (u_char *) ffchars; + + this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); @@ -1236,16 +1408,20 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, /* In partial page write we don't update bufferram */ onenand_update_bufferram(mtd, to, !ret && !subpage); + if (ONENAND_IS_2PLANE(this)) { + ONENAND_SET_BUFFERRAM1(this); + onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage); + } if (ret) { - printk(KERN_ERR "onenand_write: write filaed %d\n", ret); + printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); break; } /* Only check verify write turn on */ ret = onenand_verify(mtd, (u_char *) wbuf, to, thislen); if (ret) { - printk(KERN_ERR "onenand_write: verify failed %d\n", ret); + printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); break; } @@ -1262,54 +1438,14 @@ static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, /* Deselect and wake up anyone waiting on the device */ onenand_release_device(mtd); - *retlen = written; + ops->retlen = written; return ret; } -/** - * onenand_fill_auto_oob - [Internal] oob auto-placement transfer - * @param mtd MTD device structure - * @param oob_buf oob buffer - * @param buf source address - * @param column oob offset to write to - * @param thislen oob length to write - */ -static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, - const u_char *buf, int column, int thislen) -{ - struct onenand_chip *this = mtd->priv; - struct nand_oobfree *free; - int writecol = column; - int writeend = column + thislen; - int lastgap = 0; - unsigned int i; - - free = this->ecclayout->oobfree; - for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { - if (writecol >= lastgap) - writecol += free->offset - lastgap; - if (writeend >= lastgap) - writeend += free->offset - lastgap; - lastgap = free->offset + free->length; - } - free = this->ecclayout->oobfree; - for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { - int free_end = free->offset + free->length; - if (free->offset < writeend && free_end > writecol) { - int st = max_t(int,free->offset,writecol); - int ed = min_t(int,free_end,writeend); - int n = ed - st; - memcpy(oob_buf + st, buf, n); - buf += n; - } else if (column == 0) - break; - } - return 0; -} /** - * onenand_do_write_oob - [Internal] OneNAND write out-of-band + * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write @@ -1319,18 +1455,23 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, * * OneNAND write out-of-band */ -static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf, mtd_oob_mode_t mode) +static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) { struct onenand_chip *this = mtd->priv; int column, ret = 0, oobsize; int written = 0; u_char *oobbuf; + size_t len = ops->ooblen; + const u_char *buf = ops->oobbuf; + mtd_oob_mode_t mode = ops->mode; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + to += ops->ooboffs; + + DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ - *retlen = 0; + ops->oobretlen = 0; if (mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -1340,13 +1481,13 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, column = to & (mtd->oobsize - 1); if (unlikely(column >= oobsize)) { - printk(KERN_ERR "onenand_write_oob: Attempted to start write outside oob\n"); + printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n"); return -EINVAL; } /* For compatibility with NAND: Do not allow write past end of page */ if (unlikely(column + len > oobsize)) { - printk(KERN_ERR "onenand_write_oob: " + printk(KERN_ERR "onenand_write_oob_nolock: " "Attempt to write past end of page\n"); return -EINVAL; } @@ -1355,13 +1496,10 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, if (unlikely(to >= mtd->size || column + len > ((mtd->size >> this->page_shift) - (to >> this->page_shift)) * oobsize)) { - printk(KERN_ERR "onenand_write_oob: Attempted to write past end of device\n"); + printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n"); return -EINVAL; } - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_WRITING); - oobbuf = this->oob_buf; /* Loop until all data write */ @@ -1384,16 +1522,20 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); onenand_update_bufferram(mtd, to, 0); + if (ONENAND_IS_2PLANE(this)) { + ONENAND_SET_BUFFERRAM1(this); + onenand_update_bufferram(mtd, to + this->writesize, 0); + } ret = this->wait(mtd, FL_WRITING); if (ret) { - printk(KERN_ERR "onenand_write_oob: write failed %d\n", ret); + printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret); break; } ret = onenand_verify_oob(mtd, oobbuf, to); if (ret) { - printk(KERN_ERR "onenand_write_oob: verify failed %d\n", ret); + printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret); break; } @@ -1406,11 +1548,37 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, column = 0; } - /* Deselect and wake up anyone waiting on the device */ - onenand_release_device(mtd); + ops->oobretlen = written; + + return ret; +} + +/** + * 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 + * + * Write with ECC + */ +static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) +{ + struct mtd_oob_ops ops = { + .len = len, + .ooblen = 0, + .datbuf = (u_char *) buf, + .oobbuf = NULL, + }; + int ret; - *retlen = written; + onenand_get_device(mtd, FL_WRITING); + ret = onenand_write_ops_nolock(mtd, to, &ops); + onenand_release_device(mtd); + *retlen = ops.retlen; return ret; } @@ -1423,6 +1591,8 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, static int onenand_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) { + int ret; + switch (ops->mode) { case MTD_OOB_PLACE: case MTD_OOB_AUTO: @@ -1432,21 +1602,27 @@ static int onenand_write_oob(struct mtd_info *mtd, loff_t to, default: return -EINVAL; } - return onenand_do_write_oob(mtd, to + ops->ooboffs, ops->ooblen, - &ops->oobretlen, ops->oobbuf, ops->mode); + + onenand_get_device(mtd, FL_WRITING); + if (ops->datbuf) + ret = onenand_write_ops_nolock(mtd, to, ops); + else + ret = onenand_write_oob_nolock(mtd, to, ops); + onenand_release_device(mtd); + + return ret; } /** - * onenand_block_checkbad - [GENERIC] Check if a block is marked bad + * onenand_block_isbad_nolock - [GENERIC] Check if a block is marked bad * @param mtd MTD device structure * @param ofs offset from device start - * @param getchip 0, if the chip is already selected * @param allowbbt 1, if its allowed to access the bbt area * * Check, if the block is bad. Either by reading the bad block table or * calling of the scan function. */ -static int onenand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) +static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allowbbt) { struct onenand_chip *this = mtd->priv; struct bbm_info *bbm = this->bbm; @@ -1507,7 +1683,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) cond_resched(); /* Check if we have a bad block, we do not erase bad blocks */ - if (onenand_block_checkbad(mtd, addr, 0, 0)) { + if (onenand_block_isbad_nolock(mtd, addr, 0)) { printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%08x\n", (unsigned int) addr); instr->state = MTD_ERASE_FAILED; goto erase_exit; @@ -1571,11 +1747,16 @@ static void onenand_sync(struct mtd_info *mtd) */ static int onenand_block_isbad(struct mtd_info *mtd, loff_t ofs) { + int ret; + /* Check for invalid offset */ if (ofs > mtd->size) return -EINVAL; - return onenand_block_checkbad(mtd, ofs, 1, 0); + onenand_get_device(mtd, FL_READING); + ret = onenand_block_isbad_nolock(mtd, ofs, 0); + onenand_release_device(mtd); + return ret; } /** @@ -1591,7 +1772,12 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) struct onenand_chip *this = mtd->priv; struct bbm_info *bbm = this->bbm; u_char buf[2] = {0, 0}; - size_t retlen; + struct mtd_oob_ops ops = { + .mode = MTD_OOB_PLACE, + .ooblen = 2, + .oobbuf = buf, + .ooboffs = 0, + }; int block; /* Get block number */ @@ -1601,7 +1787,7 @@ 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 onenand_do_write_oob(mtd, ofs , 2, &retlen, buf, MTD_OOB_PLACE); + return onenand_write_oob_nolock(mtd, ofs, &ops); } /** @@ -1624,7 +1810,10 @@ static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) return ret; } - return this->block_markbad(mtd, ofs); + onenand_get_device(mtd, FL_WRITING); + ret = this->block_markbad(mtd, ofs); + onenand_release_device(mtd); + return ret; } /** @@ -1823,13 +2012,19 @@ 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; + struct mtd_oob_ops ops = { + .len = len, + .ooblen = 0, + .datbuf = buf, + .oobbuf = NULL, + }; 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); + ret = onenand_read_ops_nolock(mtd, from, &ops); /* Exit OTP access mode */ this->command(mtd, ONENAND_CMD_RESET, 0, 0); @@ -1841,19 +2036,20 @@ static int do_otp_read(struct mtd_info *mtd, loff_t from, size_t len, /** * do_otp_write - [DEFAULT] Write OTP block area * @param mtd MTD device structure - * @param from The offset to write + * @param to 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, +static int do_otp_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, u_char *buf) { struct onenand_chip *this = mtd->priv; unsigned char *pbuf = buf; int ret; + struct mtd_oob_ops ops; /* Force buffer page aligned */ if (len < mtd->writesize) { @@ -1867,7 +2063,12 @@ static int do_otp_write(struct mtd_info *mtd, loff_t from, size_t len, this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); this->wait(mtd, FL_OTPING); - ret = mtd->write(mtd, from, len, retlen, pbuf); + ops.len = len; + ops.ooblen = 0; + ops.datbuf = pbuf; + ops.oobbuf = NULL; + ret = onenand_write_ops_nolock(mtd, to, &ops); + *retlen = ops.retlen; /* Exit OTP access mode */ this->command(mtd, ONENAND_CMD_RESET, 0, 0); @@ -1890,13 +2091,21 @@ 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; + struct mtd_oob_ops ops = { + .mode = MTD_OOB_PLACE, + .ooblen = len, + .oobbuf = buf, + .ooboffs = 0, + }; 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, MTD_OOB_PLACE); + ret = onenand_write_oob_nolock(mtd, from, &ops); + + *retlen = ops.oobretlen; /* Exit OTP access mode */ this->command(mtd, ONENAND_CMD_RESET, 0, 0); @@ -1943,13 +2152,16 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, if (((mtd->writesize * otp_pages) - (from + len)) < 0) return 0; + onenand_get_device(mtd, FL_OTPING); 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; + if (len <= 0) { + ret = -ENOSPC; + break; + } otpinfo = (struct otp_info *) buf; otpinfo->start = from; @@ -1969,13 +2181,14 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, len -= size; *retlen += size; - if (ret < 0) - return ret; + if (ret) + break; } otp_pages--; } + onenand_release_device(mtd); - return 0; + return ret; } /** @@ -2107,6 +2320,7 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, * * Check and set OneNAND features * - lock scheme + * - two plane */ static void onenand_check_features(struct mtd_info *mtd) { @@ -2118,19 +2332,35 @@ static void onenand_check_features(struct mtd_info *mtd) process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT; /* Lock scheme */ - if (density >= ONENAND_DEVICE_DENSITY_1Gb) { + switch (density) { + case ONENAND_DEVICE_DENSITY_4Gb: + this->options |= ONENAND_HAS_2PLANE; + + case ONENAND_DEVICE_DENSITY_2Gb: + /* 2Gb DDP don't have 2 plane */ + if (!ONENAND_IS_DDP(this)) + this->options |= ONENAND_HAS_2PLANE; + this->options |= ONENAND_HAS_UNLOCK_ALL; + + case ONENAND_DEVICE_DENSITY_1Gb: /* A-Die has all block unlock */ - if (process) { - printk(KERN_DEBUG "Chip support all block unlock\n"); + if (process) this->options |= ONENAND_HAS_UNLOCK_ALL; - } - } else { - /* Some OneNAND has continues lock scheme */ - if (!process) { - printk(KERN_DEBUG "Lock scheme is Continues Lock\n"); + break; + + default: + /* Some OneNAND has continuous lock scheme */ + if (!process) this->options |= ONENAND_HAS_CONT_LOCK; - } + break; } + + if (this->options & ONENAND_HAS_CONT_LOCK) + printk(KERN_DEBUG "Lock scheme is Continuous Lock\n"); + if (this->options & ONENAND_HAS_UNLOCK_ALL) + printk(KERN_DEBUG "Chip support all block unlock\n"); + if (this->options & ONENAND_HAS_2PLANE) + printk(KERN_DEBUG "Chip has 2 plane\n"); } /** @@ -2154,7 +2384,7 @@ static void onenand_print_device_info(int device, int version) (16 << density), vcc ? "2.65/3.3" : "1.8", device); - printk(KERN_DEBUG "OneNAND version = 0x%04x\n", version); + printk(KERN_INFO "OneNAND version = 0x%04x\n", version); } static const struct onenand_manufacturers onenand_manuf_ids[] = { @@ -2257,6 +2487,8 @@ static int onenand_probe(struct mtd_info *mtd) this->erase_shift = ffs(mtd->erasesize) - 1; this->page_shift = ffs(mtd->writesize) - 1; this->page_mask = (1 << (this->erase_shift - this->page_shift)) - 1; + /* It's real page size */ + this->writesize = mtd->writesize; /* REVIST: Multichip handling */ @@ -2265,6 +2497,17 @@ static int onenand_probe(struct mtd_info *mtd) /* Check OneNAND features */ onenand_check_features(mtd); + /* + * We emulate the 4KiB page and 256KiB erase block size + * But oobsize is still 64 bytes. + * It is only valid if you turn on 2X program support, + * Otherwise it will be ignored by compiler. + */ + if (ONENAND_IS_2PLANE(this)) { + mtd->writesize <<= 1; + mtd->erasesize <<= 1; + } + return 0; } diff --git a/drivers/mtd/onenand/onenand_sim.c b/drivers/mtd/onenand/onenand_sim.c new file mode 100644 index 000000000000..0d89ad5776fa --- /dev/null +++ b/drivers/mtd/onenand/onenand_sim.c @@ -0,0 +1,495 @@ +/* + * linux/drivers/mtd/onenand/onenand_sim.c + * + * The OneNAND simulator + * + * Copyright © 2005-2007 Samsung Electronics + * Kyungmin Park <kyungmin.park@samsung.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. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/vmalloc.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/onenand.h> + +#include <linux/io.h> + +#ifndef CONFIG_ONENAND_SIM_MANUFACTURER +#define CONFIG_ONENAND_SIM_MANUFACTURER 0xec +#endif +#ifndef CONFIG_ONENAND_SIM_DEVICE_ID +#define CONFIG_ONENAND_SIM_DEVICE_ID 0x04 +#endif +#ifndef CONFIG_ONENAND_SIM_VERSION_ID +#define CONFIG_ONENAND_SIM_VERSION_ID 0x1e +#endif + +static int manuf_id = CONFIG_ONENAND_SIM_MANUFACTURER; +static int device_id = CONFIG_ONENAND_SIM_DEVICE_ID; +static int version_id = CONFIG_ONENAND_SIM_VERSION_ID; + +struct onenand_flash { + void __iomem *base; + void __iomem *data; +}; + +#define ONENAND_CORE(flash) (flash->data) +#define ONENAND_CORE_SPARE(flash, this, offset) \ + ((flash->data) + (this->chipsize) + (offset >> 5)) + +#define ONENAND_MAIN_AREA(this, offset) \ + (this->base + ONENAND_DATARAM + offset) + +#define ONENAND_SPARE_AREA(this, offset) \ + (this->base + ONENAND_SPARERAM + offset) + +#define ONENAND_GET_WP_STATUS(this) \ + (readw(this->base + ONENAND_REG_WP_STATUS)) + +#define ONENAND_SET_WP_STATUS(v, this) \ + (writew(v, this->base + ONENAND_REG_WP_STATUS)) + +/* It has all 0xff chars */ +#define MAX_ONENAND_PAGESIZE (2048 + 64) +static unsigned char *ffchars; + +static struct mtd_partition os_partitions[] = { + { + .name = "OneNAND simulator partition", + .offset = 0, + .size = MTDPART_SIZ_FULL, + }, +}; + +/* + * OneNAND simulator mtd + */ +struct onenand_info { + struct mtd_info mtd; + struct mtd_partition *parts; + struct onenand_chip onenand; + struct onenand_flash flash; +}; + +static struct onenand_info *info; + +#define DPRINTK(format, args...) \ +do { \ + printk(KERN_DEBUG "%s[%d]: " format "\n", __func__, \ + __LINE__, ##args); \ +} while (0) + +/** + * onenand_lock_handle - Handle Lock scheme + * @param this OneNAND device structure + * @param cmd The command to be sent + * + * Send lock command to OneNAND device. + * The lock scheme is depends on chip type. + */ +static void onenand_lock_handle(struct onenand_chip *this, int cmd) +{ + int block_lock_scheme; + int status; + + status = ONENAND_GET_WP_STATUS(this); + block_lock_scheme = !(this->options & ONENAND_HAS_CONT_LOCK); + + switch (cmd) { + case ONENAND_CMD_UNLOCK: + if (block_lock_scheme) + ONENAND_SET_WP_STATUS(ONENAND_WP_US, this); + else + ONENAND_SET_WP_STATUS(status | ONENAND_WP_US, this); + break; + + case ONENAND_CMD_LOCK: + if (block_lock_scheme) + ONENAND_SET_WP_STATUS(ONENAND_WP_LS, this); + else + ONENAND_SET_WP_STATUS(status | ONENAND_WP_LS, this); + break; + + case ONENAND_CMD_LOCK_TIGHT: + if (block_lock_scheme) + ONENAND_SET_WP_STATUS(ONENAND_WP_LTS, this); + else + ONENAND_SET_WP_STATUS(status | ONENAND_WP_LTS, this); + break; + + default: + break; + } +} + +/** + * onenand_bootram_handle - Handle BootRAM area + * @param this OneNAND device structure + * @param cmd The command to be sent + * + * Emulate BootRAM area. It is possible to do basic operation using BootRAM. + */ +static void onenand_bootram_handle(struct onenand_chip *this, int cmd) +{ + switch (cmd) { + case ONENAND_CMD_READID: + writew(manuf_id, this->base); + writew(device_id, this->base + 2); + writew(version_id, this->base + 4); + break; + + default: + /* REVIST: Handle other commands */ + break; + } +} + +/** + * onenand_update_interrupt - Set interrupt register + * @param this OneNAND device structure + * @param cmd The command to be sent + * + * Update interrupt register. The status is depends on command. + */ +static void onenand_update_interrupt(struct onenand_chip *this, int cmd) +{ + int interrupt = ONENAND_INT_MASTER; + + switch (cmd) { + case ONENAND_CMD_READ: + case ONENAND_CMD_READOOB: + interrupt |= ONENAND_INT_READ; + break; + + case ONENAND_CMD_PROG: + case ONENAND_CMD_PROGOOB: + interrupt |= ONENAND_INT_WRITE; + break; + + case ONENAND_CMD_ERASE: + interrupt |= ONENAND_INT_ERASE; + break; + + case ONENAND_CMD_RESET: + interrupt |= ONENAND_INT_RESET; + break; + + default: + break; + } + + writew(interrupt, this->base + ONENAND_REG_INTERRUPT); +} + +/** + * onenand_check_overwrite - Check over-write if happend + * @param dest The destination pointer + * @param src The source pointer + * @param count The length to be check + * @return 0 on same, otherwise 1 + * + * Compare the source with destination + */ +static int onenand_check_overwrite(void *dest, void *src, size_t count) +{ + unsigned int *s = (unsigned int *) src; + unsigned int *d = (unsigned int *) dest; + int i; + + count >>= 2; + for (i = 0; i < count; i++) + if ((*s++ ^ *d++) != 0) + return 1; + + return 0; +} + +/** + * onenand_data_handle - Handle OneNAND Core and DataRAM + * @param this OneNAND device structure + * @param cmd The command to be sent + * @param dataram Which dataram used + * @param offset The offset to OneNAND Core + * + * Copy data from OneNAND Core to DataRAM (read) + * Copy data from DataRAM to OneNAND Core (write) + * Erase the OneNAND Core (erase) + */ +static void onenand_data_handle(struct onenand_chip *this, int cmd, + int dataram, unsigned int offset) +{ + struct mtd_info *mtd = &info->mtd; + struct onenand_flash *flash = this->priv; + int main_offset, spare_offset; + void __iomem *src; + void __iomem *dest; + unsigned int i; + + if (dataram) { + main_offset = mtd->writesize; + spare_offset = mtd->oobsize; + } else { + main_offset = 0; + spare_offset = 0; + } + + switch (cmd) { + case ONENAND_CMD_READ: + src = ONENAND_CORE(flash) + offset; + dest = ONENAND_MAIN_AREA(this, main_offset); + memcpy(dest, src, mtd->writesize); + /* Fall through */ + + case ONENAND_CMD_READOOB: + src = ONENAND_CORE_SPARE(flash, this, offset); + dest = ONENAND_SPARE_AREA(this, spare_offset); + memcpy(dest, src, mtd->oobsize); + break; + + case ONENAND_CMD_PROG: + src = ONENAND_MAIN_AREA(this, main_offset); + dest = ONENAND_CORE(flash) + offset; + /* To handle partial write */ + for (i = 0; i < (1 << mtd->subpage_sft); i++) { + int off = i * this->subpagesize; + if (!memcmp(src + off, ffchars, this->subpagesize)) + continue; + if (memcmp(dest + off, ffchars, this->subpagesize) && + onenand_check_overwrite(dest + off, src + off, this->subpagesize)) + printk(KERN_ERR "over-write happend at 0x%08x\n", offset); + memcpy(dest + off, src + off, this->subpagesize); + } + /* Fall through */ + + case ONENAND_CMD_PROGOOB: + src = ONENAND_SPARE_AREA(this, spare_offset); + /* Check all data is 0xff chars */ + if (!memcmp(src, ffchars, mtd->oobsize)) + break; + + dest = ONENAND_CORE_SPARE(flash, this, offset); + if (memcmp(dest, ffchars, mtd->oobsize) && + onenand_check_overwrite(dest, src, mtd->oobsize)) + printk(KERN_ERR "OOB: over-write happend at 0x%08x\n", + offset); + memcpy(dest, src, mtd->oobsize); + break; + + case ONENAND_CMD_ERASE: + memset(ONENAND_CORE(flash) + offset, 0xff, mtd->erasesize); + memset(ONENAND_CORE_SPARE(flash, this, offset), 0xff, + (mtd->erasesize >> 5)); + break; + + default: + break; + } +} + +/** + * onenand_command_handle - Handle command + * @param this OneNAND device structure + * @param cmd The command to be sent + * + * Emulate OneNAND command. + */ +static void onenand_command_handle(struct onenand_chip *this, int cmd) +{ + unsigned long offset = 0; + int block = -1, page = -1, bufferram = -1; + int dataram = 0; + + switch (cmd) { + case ONENAND_CMD_UNLOCK: + case ONENAND_CMD_LOCK: + case ONENAND_CMD_LOCK_TIGHT: + case ONENAND_CMD_UNLOCK_ALL: + onenand_lock_handle(this, cmd); + break; + + case ONENAND_CMD_BUFFERRAM: + /* Do nothing */ + return; + + default: + block = (int) readw(this->base + ONENAND_REG_START_ADDRESS1); + if (block & (1 << ONENAND_DDP_SHIFT)) { + block &= ~(1 << ONENAND_DDP_SHIFT); + /* The half of chip block */ + block += this->chipsize >> (this->erase_shift + 1); + } + if (cmd == ONENAND_CMD_ERASE) + break; + + page = (int) readw(this->base + ONENAND_REG_START_ADDRESS8); + page = (page >> ONENAND_FPA_SHIFT); + bufferram = (int) readw(this->base + ONENAND_REG_START_BUFFER); + bufferram >>= ONENAND_BSA_SHIFT; + bufferram &= ONENAND_BSA_DATARAM1; + dataram = (bufferram == ONENAND_BSA_DATARAM1) ? 1 : 0; + break; + } + + if (block != -1) + offset += block << this->erase_shift; + + if (page != -1) + offset += page << this->page_shift; + + onenand_data_handle(this, cmd, dataram, offset); + + onenand_update_interrupt(this, cmd); +} + +/** + * onenand_writew - [OneNAND Interface] Emulate write operation + * @param value value to write + * @param addr address to write + * + * Write OneNAND register with value + */ +static void onenand_writew(unsigned short value, void __iomem * addr) +{ + struct onenand_chip *this = info->mtd.priv; + + /* BootRAM handling */ + if (addr < this->base + ONENAND_DATARAM) { + onenand_bootram_handle(this, value); + return; + } + /* Command handling */ + if (addr == this->base + ONENAND_REG_COMMAND) + onenand_command_handle(this, value); + + writew(value, addr); +} + +/** + * flash_init - Initialize OneNAND simulator + * @param flash OneNAND simulaotr data strucutres + * + * Initialize OneNAND simulator. + */ +static int __init flash_init(struct onenand_flash *flash) +{ + int density, size; + int buffer_size; + + flash->base = kzalloc(131072, GFP_KERNEL); + if (!flash->base) { + printk(KERN_ERR "Unable to allocate base address.\n"); + return -ENOMEM; + } + + density = device_id >> ONENAND_DEVICE_DENSITY_SHIFT; + size = ((16 << 20) << density); + + ONENAND_CORE(flash) = vmalloc(size + (size >> 5)); + if (!ONENAND_CORE(flash)) { + printk(KERN_ERR "Unable to allocate nand core address.\n"); + kfree(flash->base); + return -ENOMEM; + } + + memset(ONENAND_CORE(flash), 0xff, size + (size >> 5)); + + /* Setup registers */ + writew(manuf_id, flash->base + ONENAND_REG_MANUFACTURER_ID); + writew(device_id, flash->base + ONENAND_REG_DEVICE_ID); + writew(version_id, flash->base + ONENAND_REG_VERSION_ID); + + if (density < 2) + buffer_size = 0x0400; /* 1KiB page */ + else + buffer_size = 0x0800; /* 2KiB page */ + writew(buffer_size, flash->base + ONENAND_REG_DATA_BUFFER_SIZE); + + return 0; +} + +/** + * flash_exit - Clean up OneNAND simulator + * @param flash OneNAND simulaotr data strucutres + * + * Clean up OneNAND simulator. + */ +static void flash_exit(struct onenand_flash *flash) +{ + vfree(ONENAND_CORE(flash)); + kfree(flash->base); + kfree(flash); +} + +static int __init onenand_sim_init(void) +{ + /* Allocate all 0xff chars pointer */ + ffchars = kmalloc(MAX_ONENAND_PAGESIZE, GFP_KERNEL); + if (!ffchars) { + printk(KERN_ERR "Unable to allocate ff chars.\n"); + return -ENOMEM; + } + memset(ffchars, 0xff, MAX_ONENAND_PAGESIZE); + + /* Allocate OneNAND simulator mtd pointer */ + info = kzalloc(sizeof(struct onenand_info), GFP_KERNEL); + if (!info) { + printk(KERN_ERR "Unable to allocate core structures.\n"); + kfree(ffchars); + return -ENOMEM; + } + + /* Override write_word function */ + info->onenand.write_word = onenand_writew; + + if (flash_init(&info->flash)) { + printk(KERN_ERR "Unable to allocat flash.\n"); + kfree(ffchars); + kfree(info); + return -ENOMEM; + } + + info->parts = os_partitions; + + info->onenand.base = info->flash.base; + info->onenand.priv = &info->flash; + + info->mtd.name = "OneNAND simulator"; + info->mtd.priv = &info->onenand; + info->mtd.owner = THIS_MODULE; + + if (onenand_scan(&info->mtd, 1)) { + flash_exit(&info->flash); + kfree(ffchars); + kfree(info); + return -ENXIO; + } + + add_mtd_partitions(&info->mtd, info->parts, ARRAY_SIZE(os_partitions)); + + return 0; +} + +static void __exit onenand_sim_exit(void) +{ + struct onenand_chip *this = info->mtd.priv; + struct onenand_flash *flash = this->priv; + + onenand_release(&info->mtd); + flash_exit(flash); + kfree(ffchars); + kfree(info); +} + +module_init(onenand_sim_init); +module_exit(onenand_sim_exit); + +MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); +MODULE_DESCRIPTION("The OneNAND flash simulator"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c index 006c03aacb55..823fba4e6d2f 100644 --- a/drivers/mtd/rfd_ftl.c +++ b/drivers/mtd/rfd_ftl.c @@ -779,10 +779,8 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) else { if (!mtd->erasesize) { printk(KERN_WARNING PREFIX "please provide block_size"); - kfree(part); - return; - } - else + goto out; + } else part->block_size = mtd->erasesize; } @@ -804,7 +802,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) if (!add_mtd_blktrans_dev((void*)part)) return; } - +out: kfree(part); } diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index 94ee54934411..29c41eeb09fe 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -1314,11 +1314,10 @@ static int paranoid_check_si(const struct ubi_device *ubi, * Make sure that all the physical eraseblocks are in one of the lists * or trees. */ - buf = kmalloc(ubi->peb_count, GFP_KERNEL); + buf = kzalloc(ubi->peb_count, GFP_KERNEL); if (!buf) return -ENOMEM; - memset(buf, 1, ubi->peb_count); for (pnum = 0; pnum < ubi->peb_count; pnum++) { err = ubi_io_is_bad(ubi, pnum); if (err < 0) { @@ -1326,28 +1325,28 @@ static int paranoid_check_si(const struct ubi_device *ubi, return err; } else if (err) - buf[pnum] = 0; + buf[pnum] = 1; } ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) - buf[seb->pnum] = 0; + buf[seb->pnum] = 1; list_for_each_entry(seb, &si->free, u.list) - buf[seb->pnum] = 0; + buf[seb->pnum] = 1; list_for_each_entry(seb, &si->corr, u.list) - buf[seb->pnum] = 0; + buf[seb->pnum] = 1; list_for_each_entry(seb, &si->erase, u.list) - buf[seb->pnum] = 0; + buf[seb->pnum] = 1; list_for_each_entry(seb, &si->alien, u.list) - buf[seb->pnum] = 0; + buf[seb->pnum] = 1; err = 0; for (pnum = 0; pnum < ubi->peb_count; pnum++) - if (buf[pnum]) { + if (!buf[pnum]) { ubi_err("PEB %d is not referred", pnum); err = 1; } diff --git a/fs/Kconfig b/fs/Kconfig index f9eed6d79066..bb02b39380a3 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1225,6 +1225,14 @@ config JFFS2_FS_WRITEBUFFER - NOR flash with transparent ECC - DataFlash +config JFFS2_FS_WBUF_VERIFY + bool "Verify JFFS2 write-buffer reads" + depends on JFFS2_FS_WRITEBUFFER + default n + help + This causes JFFS2 to read back every page written through the + write-buffer, and check for errors. + config JFFS2_SUMMARY bool "JFFS2 summary support (EXPERIMENTAL)" depends on JFFS2_FS && EXPERIMENTAL @@ -1295,52 +1303,71 @@ config JFFS2_ZLIB select ZLIB_DEFLATE depends on JFFS2_FS default y - help - Zlib is designed to be a free, general-purpose, legally unencumbered, - lossless data-compression library for use on virtually any computer - hardware and operating system. See <http://www.gzip.org/zlib/> for - further information. + help + Zlib is designed to be a free, general-purpose, legally unencumbered, + lossless data-compression library for use on virtually any computer + hardware and operating system. See <http://www.gzip.org/zlib/> for + further information. - Say 'Y' if unsure. + Say 'Y' if unsure. + +config JFFS2_LZO + bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS + select LZO_COMPRESS + select LZO_DECOMPRESS + depends on JFFS2_FS + default n + help + minilzo-based compression. Generally works better than Zlib. + + This feature was added in July, 2007. Say 'N' if you need + compatibility with older bootloaders or kernels. config JFFS2_RTIME bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS depends on JFFS2_FS default y - help - Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. + help + Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. config JFFS2_RUBIN bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS depends on JFFS2_FS default n - help - RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. + help + RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. choice - prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS - default JFFS2_CMODE_PRIORITY - depends on JFFS2_FS - help - You can set here the default compression mode of JFFS2 from - the available compression modes. Don't touch if unsure. + prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS + default JFFS2_CMODE_PRIORITY + depends on JFFS2_FS + help + You can set here the default compression mode of JFFS2 from + the available compression modes. Don't touch if unsure. config JFFS2_CMODE_NONE - bool "no compression" - help - Uses no compression. + bool "no compression" + help + Uses no compression. config JFFS2_CMODE_PRIORITY - bool "priority" - help - Tries the compressors in a predefined order and chooses the first - successful one. + bool "priority" + help + Tries the compressors in a predefined order and chooses the first + successful one. config JFFS2_CMODE_SIZE - bool "size (EXPERIMENTAL)" - help - Tries all compressors and chooses the one which has the smallest - result. + bool "size (EXPERIMENTAL)" + help + Tries all compressors and chooses the one which has the smallest + result. + +config JFFS2_CMODE_FAVOURLZO + bool "Favour LZO" + help + Tries all compressors and chooses the one which has the smallest + result but gives some preference to LZO (which has faster + decompression) at the expense of size. endchoice diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile index c32b241e3d91..60e5d49ca03e 100644 --- a/fs/jffs2/Makefile +++ b/fs/jffs2/Makefile @@ -17,4 +17,5 @@ jffs2-$(CONFIG_JFFS2_FS_POSIX_ACL) += acl.o jffs2-$(CONFIG_JFFS2_RUBIN) += compr_rubin.o jffs2-$(CONFIG_JFFS2_RTIME) += compr_rtime.o jffs2-$(CONFIG_JFFS2_ZLIB) += compr_zlib.o +jffs2-$(CONFIG_JFFS2_LZO) += compr_lzo.o jffs2-$(CONFIG_JFFS2_SUMMARY) += summary.o diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 65b3a1b5b88d..8ec9323e830a 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -176,7 +176,7 @@ static void jffs2_iset_acl(struct inode *inode, struct posix_acl **i_acl, struct spin_unlock(&inode->i_lock); } -static struct posix_acl *jffs2_get_acl(struct inode *inode, int type) +struct posix_acl *jffs2_get_acl(struct inode *inode, int type) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); struct posix_acl *acl; @@ -247,8 +247,13 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) if (rc < 0) return rc; if (inode->i_mode != mode) { - inode->i_mode = mode; - jffs2_dirty_inode(inode); + struct iattr attr; + + attr.ia_valid = ATTR_MODE; + attr.ia_mode = mode; + rc = jffs2_do_setattr(inode, &attr); + if (rc < 0) + return rc; } if (rc == 0) acl = NULL; @@ -307,22 +312,16 @@ int jffs2_permission(struct inode *inode, int mask, struct nameidata *nd) return generic_permission(inode, mask, jffs2_check_acl); } -int jffs2_init_acl(struct inode *inode, struct inode *dir) +int jffs2_init_acl(struct inode *inode, struct posix_acl *acl) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); - struct posix_acl *acl = NULL, *clone; + struct posix_acl *clone; mode_t mode; int rc = 0; f->i_acl_access = JFFS2_ACL_NOT_CACHED; f->i_acl_default = JFFS2_ACL_NOT_CACHED; - if (!S_ISLNK(inode->i_mode)) { - acl = jffs2_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) - inode->i_mode &= ~current->fs->umask; - } + if (acl) { if (S_ISDIR(inode->i_mode)) { rc = jffs2_set_acl(inode, ACL_TYPE_DEFAULT, acl); diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h index c84378cee82a..90a2dbf59051 100644 --- a/fs/jffs2/acl.h +++ b/fs/jffs2/acl.h @@ -28,9 +28,10 @@ struct jffs2_acl_header { #define JFFS2_ACL_NOT_CACHED ((void *)-1) +extern struct posix_acl *jffs2_get_acl(struct inode *inode, int type); extern int jffs2_permission(struct inode *, int, struct nameidata *); extern int jffs2_acl_chmod(struct inode *); -extern int jffs2_init_acl(struct inode *, struct inode *); +extern int jffs2_init_acl(struct inode *, struct posix_acl *); extern void jffs2_clear_acl(struct jffs2_inode_info *); extern struct xattr_handler jffs2_acl_access_xattr_handler; @@ -38,6 +39,7 @@ extern struct xattr_handler jffs2_acl_default_xattr_handler; #else +#define jffs2_get_acl(inode, type) (NULL) #define jffs2_permission NULL #define jffs2_acl_chmod(inode) (0) #define jffs2_init_acl(inode,dir) (0) diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c index 504643f2e98b..d568ae846741 100644 --- a/fs/jffs2/background.c +++ b/fs/jffs2/background.c @@ -23,8 +23,8 @@ static int jffs2_garbage_collect_thread(void *); void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c) { spin_lock(&c->erase_completion_lock); - if (c->gc_task && jffs2_thread_should_wake(c)) - send_sig(SIGHUP, c->gc_task, 1); + if (c->gc_task && jffs2_thread_should_wake(c)) + send_sig(SIGHUP, c->gc_task, 1); spin_unlock(&c->erase_completion_lock); } diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c index 0ca2fff2617f..722a6b682951 100644 --- a/fs/jffs2/build.c +++ b/fs/jffs2/build.c @@ -285,6 +285,14 @@ static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c) than actually making progress? */ c->resv_blocks_gcbad = 0;//c->resv_blocks_deletion + 2; + /* What number of 'very dirty' eraseblocks do we allow before we + trigger the GC thread even if we don't _need_ the space. When we + can't mark nodes obsolete on the medium, the old dirty nodes cause + performance problems because we have to inspect and discard them. */ + c->vdirty_blocks_gctrigger = c->resv_blocks_gctrigger; + if (jffs2_can_mark_obsolete(c)) + c->vdirty_blocks_gctrigger *= 10; + /* If there's less than this amount of dirty space, don't bother trying to GC to make more space. It'll be a fruitless task */ c->nospc_dirty_size = c->sector_size + (c->flash_size / 100); @@ -303,6 +311,8 @@ static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c) c->resv_blocks_gcbad, c->resv_blocks_gcbad*c->sector_size/1024); dbg_fsbuild("Amount of dirty space required to GC: %d bytes\n", c->nospc_dirty_size); + dbg_fsbuild("Very dirty blocks before GC triggered: %d\n", + c->vdirty_blocks_gctrigger); } int jffs2_do_mount_fs(struct jffs2_sb_info *c) diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c index 485d065de41f..86739ee53b37 100644 --- a/fs/jffs2/compr.c +++ b/fs/jffs2/compr.c @@ -5,7 +5,7 @@ * Created by Arjan van de Ven <arjanv@redhat.com> * * Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>, - * University of Szeged, Hungary + * University of Szeged, Hungary * * For licensing information, see the file 'LICENCE' in this directory. * @@ -24,6 +24,34 @@ static int jffs2_compression_mode = JFFS2_COMPR_MODE_PRIORITY; /* Statistics for blocks stored without compression */ static uint32_t none_stat_compr_blocks=0,none_stat_decompr_blocks=0,none_stat_compr_size=0; + +/* + * Return 1 to use this compression + */ +static int jffs2_is_best_compression(struct jffs2_compressor *this, + struct jffs2_compressor *best, uint32_t size, uint32_t bestsize) +{ + switch (jffs2_compression_mode) { + case JFFS2_COMPR_MODE_SIZE: + if (bestsize > size) + return 1; + return 0; + case JFFS2_COMPR_MODE_FAVOURLZO: + if ((this->compr == JFFS2_COMPR_LZO) && (bestsize > size)) + return 1; + if ((best->compr != JFFS2_COMPR_LZO) && (bestsize > size)) + return 1; + if ((this->compr == JFFS2_COMPR_LZO) && (bestsize > (size * FAVOUR_LZO_PERCENT / 100))) + return 1; + if ((bestsize * FAVOUR_LZO_PERCENT / 100) > size) + return 1; + + return 0; + } + /* Shouldn't happen */ + return 0; +} + /* jffs2_compress: * @data: Pointer to uncompressed data * @cdata: Pointer to returned pointer to buffer for compressed data @@ -43,121 +71,124 @@ static uint32_t none_stat_compr_blocks=0,none_stat_decompr_blocks=0,none_stat_co * *datalen accordingly to show the amount of data which were compressed. */ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, - unsigned char *data_in, unsigned char **cpage_out, - uint32_t *datalen, uint32_t *cdatalen) + unsigned char *data_in, unsigned char **cpage_out, + uint32_t *datalen, uint32_t *cdatalen) { int ret = JFFS2_COMPR_NONE; - int compr_ret; - struct jffs2_compressor *this, *best=NULL; - unsigned char *output_buf = NULL, *tmp_buf; - uint32_t orig_slen, orig_dlen; - uint32_t best_slen=0, best_dlen=0; + int compr_ret; + struct jffs2_compressor *this, *best=NULL; + unsigned char *output_buf = NULL, *tmp_buf; + uint32_t orig_slen, orig_dlen; + uint32_t best_slen=0, best_dlen=0; - switch (jffs2_compression_mode) { - case JFFS2_COMPR_MODE_NONE: - break; - case JFFS2_COMPR_MODE_PRIORITY: - output_buf = kmalloc(*cdatalen,GFP_KERNEL); - if (!output_buf) { - printk(KERN_WARNING "JFFS2: No memory for compressor allocation. Compression failed.\n"); - goto out; - } - orig_slen = *datalen; - orig_dlen = *cdatalen; - spin_lock(&jffs2_compressor_list_lock); - list_for_each_entry(this, &jffs2_compressor_list, list) { - /* Skip decompress-only backwards-compatibility and disabled modules */ - if ((!this->compress)||(this->disabled)) - continue; + switch (jffs2_compression_mode) { + case JFFS2_COMPR_MODE_NONE: + break; + case JFFS2_COMPR_MODE_PRIORITY: + output_buf = kmalloc(*cdatalen,GFP_KERNEL); + if (!output_buf) { + printk(KERN_WARNING "JFFS2: No memory for compressor allocation. Compression failed.\n"); + goto out; + } + orig_slen = *datalen; + orig_dlen = *cdatalen; + spin_lock(&jffs2_compressor_list_lock); + list_for_each_entry(this, &jffs2_compressor_list, list) { + /* Skip decompress-only backwards-compatibility and disabled modules */ + if ((!this->compress)||(this->disabled)) + continue; - this->usecount++; - spin_unlock(&jffs2_compressor_list_lock); - *datalen = orig_slen; - *cdatalen = orig_dlen; - compr_ret = this->compress(data_in, output_buf, datalen, cdatalen, NULL); - spin_lock(&jffs2_compressor_list_lock); - this->usecount--; - if (!compr_ret) { - ret = this->compr; - this->stat_compr_blocks++; - this->stat_compr_orig_size += *datalen; - this->stat_compr_new_size += *cdatalen; - break; - } - } - spin_unlock(&jffs2_compressor_list_lock); - if (ret == JFFS2_COMPR_NONE) kfree(output_buf); - break; - case JFFS2_COMPR_MODE_SIZE: - orig_slen = *datalen; - orig_dlen = *cdatalen; - spin_lock(&jffs2_compressor_list_lock); - list_for_each_entry(this, &jffs2_compressor_list, list) { - /* Skip decompress-only backwards-compatibility and disabled modules */ - if ((!this->compress)||(this->disabled)) - continue; - /* Allocating memory for output buffer if necessary */ - if ((this->compr_buf_size<orig_dlen)&&(this->compr_buf)) { - spin_unlock(&jffs2_compressor_list_lock); - kfree(this->compr_buf); - spin_lock(&jffs2_compressor_list_lock); - this->compr_buf_size=0; - this->compr_buf=NULL; - } - if (!this->compr_buf) { - spin_unlock(&jffs2_compressor_list_lock); - tmp_buf = kmalloc(orig_dlen,GFP_KERNEL); - spin_lock(&jffs2_compressor_list_lock); - if (!tmp_buf) { - printk(KERN_WARNING "JFFS2: No memory for compressor allocation. (%d bytes)\n",orig_dlen); - continue; - } - else { - this->compr_buf = tmp_buf; - this->compr_buf_size = orig_dlen; - } - } - this->usecount++; - spin_unlock(&jffs2_compressor_list_lock); - *datalen = orig_slen; - *cdatalen = orig_dlen; - compr_ret = this->compress(data_in, this->compr_buf, datalen, cdatalen, NULL); - spin_lock(&jffs2_compressor_list_lock); - this->usecount--; - if (!compr_ret) { - if ((!best_dlen)||(best_dlen>*cdatalen)) { - best_dlen = *cdatalen; - best_slen = *datalen; - best = this; - } - } - } - if (best_dlen) { - *cdatalen = best_dlen; - *datalen = best_slen; - output_buf = best->compr_buf; - best->compr_buf = NULL; - best->compr_buf_size = 0; - best->stat_compr_blocks++; - best->stat_compr_orig_size += best_slen; - best->stat_compr_new_size += best_dlen; - ret = best->compr; - } - spin_unlock(&jffs2_compressor_list_lock); - break; - default: - printk(KERN_ERR "JFFS2: unknow compression mode.\n"); - } + this->usecount++; + spin_unlock(&jffs2_compressor_list_lock); + *datalen = orig_slen; + *cdatalen = orig_dlen; + compr_ret = this->compress(data_in, output_buf, datalen, cdatalen, NULL); + spin_lock(&jffs2_compressor_list_lock); + this->usecount--; + if (!compr_ret) { + ret = this->compr; + this->stat_compr_blocks++; + this->stat_compr_orig_size += *datalen; + this->stat_compr_new_size += *cdatalen; + break; + } + } + spin_unlock(&jffs2_compressor_list_lock); + if (ret == JFFS2_COMPR_NONE) + kfree(output_buf); + break; + case JFFS2_COMPR_MODE_SIZE: + case JFFS2_COMPR_MODE_FAVOURLZO: + orig_slen = *datalen; + orig_dlen = *cdatalen; + spin_lock(&jffs2_compressor_list_lock); + list_for_each_entry(this, &jffs2_compressor_list, list) { + /* Skip decompress-only backwards-compatibility and disabled modules */ + if ((!this->compress)||(this->disabled)) + continue; + /* Allocating memory for output buffer if necessary */ + if ((this->compr_buf_size < orig_slen) && (this->compr_buf)) { + spin_unlock(&jffs2_compressor_list_lock); + kfree(this->compr_buf); + spin_lock(&jffs2_compressor_list_lock); + this->compr_buf_size=0; + this->compr_buf=NULL; + } + if (!this->compr_buf) { + spin_unlock(&jffs2_compressor_list_lock); + tmp_buf = kmalloc(orig_slen, GFP_KERNEL); + spin_lock(&jffs2_compressor_list_lock); + if (!tmp_buf) { + printk(KERN_WARNING "JFFS2: No memory for compressor allocation. (%d bytes)\n", orig_slen); + continue; + } + else { + this->compr_buf = tmp_buf; + this->compr_buf_size = orig_slen; + } + } + this->usecount++; + spin_unlock(&jffs2_compressor_list_lock); + *datalen = orig_slen; + *cdatalen = orig_dlen; + compr_ret = this->compress(data_in, this->compr_buf, datalen, cdatalen, NULL); + spin_lock(&jffs2_compressor_list_lock); + this->usecount--; + if (!compr_ret) { + if (((!best_dlen) || jffs2_is_best_compression(this, best, *cdatalen, best_dlen)) + && (*cdatalen < *datalen)) { + best_dlen = *cdatalen; + best_slen = *datalen; + best = this; + } + } + } + if (best_dlen) { + *cdatalen = best_dlen; + *datalen = best_slen; + output_buf = best->compr_buf; + best->compr_buf = NULL; + best->compr_buf_size = 0; + best->stat_compr_blocks++; + best->stat_compr_orig_size += best_slen; + best->stat_compr_new_size += best_dlen; + ret = best->compr; + } + spin_unlock(&jffs2_compressor_list_lock); + break; + default: + printk(KERN_ERR "JFFS2: unknow compression mode.\n"); + } out: - if (ret == JFFS2_COMPR_NONE) { - *cpage_out = data_in; - *datalen = *cdatalen; - none_stat_compr_blocks++; - none_stat_compr_size += *datalen; - } - else { - *cpage_out = output_buf; - } + if (ret == JFFS2_COMPR_NONE) { + *cpage_out = data_in; + *datalen = *cdatalen; + none_stat_compr_blocks++; + none_stat_compr_size += *datalen; + } + else { + *cpage_out = output_buf; + } return ret; } @@ -165,8 +196,8 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint16_t comprtype, unsigned char *cdata_in, unsigned char *data_out, uint32_t cdatalen, uint32_t datalen) { - struct jffs2_compressor *this; - int ret; + struct jffs2_compressor *this; + int ret; /* Older code had a bug where it would write non-zero 'usercompr' fields. Deal with it. */ @@ -177,32 +208,32 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, case JFFS2_COMPR_NONE: /* This should be special-cased elsewhere, but we might as well deal with it */ memcpy(data_out, cdata_in, datalen); - none_stat_decompr_blocks++; + none_stat_decompr_blocks++; break; case JFFS2_COMPR_ZERO: memset(data_out, 0, datalen); break; default: - spin_lock(&jffs2_compressor_list_lock); - list_for_each_entry(this, &jffs2_compressor_list, list) { - if (comprtype == this->compr) { - this->usecount++; - spin_unlock(&jffs2_compressor_list_lock); - ret = this->decompress(cdata_in, data_out, cdatalen, datalen, NULL); - spin_lock(&jffs2_compressor_list_lock); - if (ret) { - printk(KERN_WARNING "Decompressor \"%s\" returned %d\n", this->name, ret); - } - else { - this->stat_decompr_blocks++; - } - this->usecount--; - spin_unlock(&jffs2_compressor_list_lock); - return ret; - } - } + spin_lock(&jffs2_compressor_list_lock); + list_for_each_entry(this, &jffs2_compressor_list, list) { + if (comprtype == this->compr) { + this->usecount++; + spin_unlock(&jffs2_compressor_list_lock); + ret = this->decompress(cdata_in, data_out, cdatalen, datalen, NULL); + spin_lock(&jffs2_compressor_list_lock); + if (ret) { + printk(KERN_WARNING "Decompressor \"%s\" returned %d\n", this->name, ret); + } + else { + this->stat_decompr_blocks++; + } + this->usecount--; + spin_unlock(&jffs2_compressor_list_lock); + return ret; + } + } printk(KERN_WARNING "JFFS2 compression type 0x%02x not available.\n", comprtype); - spin_unlock(&jffs2_compressor_list_lock); + spin_unlock(&jffs2_compressor_list_lock); return -EIO; } return 0; @@ -210,108 +241,119 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, int jffs2_register_compressor(struct jffs2_compressor *comp) { - struct jffs2_compressor *this; + struct jffs2_compressor *this; - if (!comp->name) { - printk(KERN_WARNING "NULL compressor name at registering JFFS2 compressor. Failed.\n"); - return -1; - } - comp->compr_buf_size=0; - comp->compr_buf=NULL; - comp->usecount=0; - comp->stat_compr_orig_size=0; - comp->stat_compr_new_size=0; - comp->stat_compr_blocks=0; - comp->stat_decompr_blocks=0; - D1(printk(KERN_DEBUG "Registering JFFS2 compressor \"%s\"\n", comp->name)); + if (!comp->name) { + printk(KERN_WARNING "NULL compressor name at registering JFFS2 compressor. Failed.\n"); + return -1; + } + comp->compr_buf_size=0; + comp->compr_buf=NULL; + comp->usecount=0; + comp->stat_compr_orig_size=0; + comp->stat_compr_new_size=0; + comp->stat_compr_blocks=0; + comp->stat_decompr_blocks=0; + D1(printk(KERN_DEBUG "Registering JFFS2 compressor \"%s\"\n", comp->name)); - spin_lock(&jffs2_compressor_list_lock); + spin_lock(&jffs2_compressor_list_lock); - list_for_each_entry(this, &jffs2_compressor_list, list) { - if (this->priority < comp->priority) { - list_add(&comp->list, this->list.prev); - goto out; - } - } - list_add_tail(&comp->list, &jffs2_compressor_list); + list_for_each_entry(this, &jffs2_compressor_list, list) { + if (this->priority < comp->priority) { + list_add(&comp->list, this->list.prev); + goto out; + } + } + list_add_tail(&comp->list, &jffs2_compressor_list); out: - D2(list_for_each_entry(this, &jffs2_compressor_list, list) { - printk(KERN_DEBUG "Compressor \"%s\", prio %d\n", this->name, this->priority); - }) + D2(list_for_each_entry(this, &jffs2_compressor_list, list) { + printk(KERN_DEBUG "Compressor \"%s\", prio %d\n", this->name, this->priority); + }) - spin_unlock(&jffs2_compressor_list_lock); + spin_unlock(&jffs2_compressor_list_lock); - return 0; + return 0; } int jffs2_unregister_compressor(struct jffs2_compressor *comp) { - D2(struct jffs2_compressor *this;) + D2(struct jffs2_compressor *this;) - D1(printk(KERN_DEBUG "Unregistering JFFS2 compressor \"%s\"\n", comp->name)); + D1(printk(KERN_DEBUG "Unregistering JFFS2 compressor \"%s\"\n", comp->name)); - spin_lock(&jffs2_compressor_list_lock); + spin_lock(&jffs2_compressor_list_lock); - if (comp->usecount) { - spin_unlock(&jffs2_compressor_list_lock); - printk(KERN_WARNING "JFFS2: Compressor modul is in use. Unregister failed.\n"); - return -1; - } - list_del(&comp->list); + if (comp->usecount) { + spin_unlock(&jffs2_compressor_list_lock); + printk(KERN_WARNING "JFFS2: Compressor modul is in use. Unregister failed.\n"); + return -1; + } + list_del(&comp->list); - D2(list_for_each_entry(this, &jffs2_compressor_list, list) { - printk(KERN_DEBUG "Compressor \"%s\", prio %d\n", this->name, this->priority); - }) - spin_unlock(&jffs2_compressor_list_lock); - return 0; + D2(list_for_each_entry(this, &jffs2_compressor_list, list) { + printk(KERN_DEBUG "Compressor \"%s\", prio %d\n", this->name, this->priority); + }) + spin_unlock(&jffs2_compressor_list_lock); + return 0; } void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig) { - if (orig != comprbuf) - kfree(comprbuf); + if (orig != comprbuf) + kfree(comprbuf); } int __init jffs2_compressors_init(void) { /* Registering compressors */ #ifdef CONFIG_JFFS2_ZLIB - jffs2_zlib_init(); + jffs2_zlib_init(); #endif #ifdef CONFIG_JFFS2_RTIME - jffs2_rtime_init(); + jffs2_rtime_init(); #endif #ifdef CONFIG_JFFS2_RUBIN - jffs2_rubinmips_init(); - jffs2_dynrubin_init(); + jffs2_rubinmips_init(); + jffs2_dynrubin_init(); +#endif +#ifdef CONFIG_JFFS2_LZO + jffs2_lzo_init(); #endif /* Setting default compression mode */ #ifdef CONFIG_JFFS2_CMODE_NONE - jffs2_compression_mode = JFFS2_COMPR_MODE_NONE; - D1(printk(KERN_INFO "JFFS2: default compression mode: none\n");) + jffs2_compression_mode = JFFS2_COMPR_MODE_NONE; + D1(printk(KERN_INFO "JFFS2: default compression mode: none\n");) #else #ifdef CONFIG_JFFS2_CMODE_SIZE - jffs2_compression_mode = JFFS2_COMPR_MODE_SIZE; - D1(printk(KERN_INFO "JFFS2: default compression mode: size\n");) + jffs2_compression_mode = JFFS2_COMPR_MODE_SIZE; + D1(printk(KERN_INFO "JFFS2: default compression mode: size\n");) +#else +#ifdef CONFIG_JFFS2_CMODE_FAVOURLZO + jffs2_compression_mode = JFFS2_COMPR_MODE_FAVOURLZO; + D1(printk(KERN_INFO "JFFS2: default compression mode: favourlzo\n");) #else - D1(printk(KERN_INFO "JFFS2: default compression mode: priority\n");) + D1(printk(KERN_INFO "JFFS2: default compression mode: priority\n");) +#endif #endif #endif - return 0; + return 0; } int jffs2_compressors_exit(void) { /* Unregistering compressors */ +#ifdef CONFIG_JFFS2_LZO + jffs2_lzo_exit(); +#endif #ifdef CONFIG_JFFS2_RUBIN - jffs2_dynrubin_exit(); - jffs2_rubinmips_exit(); + jffs2_dynrubin_exit(); + jffs2_rubinmips_exit(); #endif #ifdef CONFIG_JFFS2_RTIME - jffs2_rtime_exit(); + jffs2_rtime_exit(); #endif #ifdef CONFIG_JFFS2_ZLIB - jffs2_zlib_exit(); + jffs2_zlib_exit(); #endif - return 0; + return 0; } diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h index 68cc7010dbdf..7d1d72faa774 100644 --- a/fs/jffs2/compr.h +++ b/fs/jffs2/compr.h @@ -2,7 +2,7 @@ * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>, - * University of Szeged, Hungary + * University of Szeged, Hungary * * For licensing information, see the file 'LICENCE' in this directory. * @@ -27,34 +27,38 @@ #define JFFS2_RUBINMIPS_PRIORITY 10 #define JFFS2_DYNRUBIN_PRIORITY 20 #define JFFS2_LZARI_PRIORITY 30 -#define JFFS2_LZO_PRIORITY 40 #define JFFS2_RTIME_PRIORITY 50 #define JFFS2_ZLIB_PRIORITY 60 +#define JFFS2_LZO_PRIORITY 80 + #define JFFS2_RUBINMIPS_DISABLED /* RUBINs will be used only */ -#define JFFS2_DYNRUBIN_DISABLED /* for decompression */ +#define JFFS2_DYNRUBIN_DISABLED /* for decompression */ #define JFFS2_COMPR_MODE_NONE 0 #define JFFS2_COMPR_MODE_PRIORITY 1 #define JFFS2_COMPR_MODE_SIZE 2 +#define JFFS2_COMPR_MODE_FAVOURLZO 3 + +#define FAVOUR_LZO_PERCENT 80 struct jffs2_compressor { - struct list_head list; - int priority; /* used by prirority comr. mode */ - char *name; - char compr; /* JFFS2_COMPR_XXX */ - int (*compress)(unsigned char *data_in, unsigned char *cpage_out, - uint32_t *srclen, uint32_t *destlen, void *model); - int (*decompress)(unsigned char *cdata_in, unsigned char *data_out, - uint32_t cdatalen, uint32_t datalen, void *model); - int usecount; - int disabled; /* if seted the compressor won't compress */ - unsigned char *compr_buf; /* used by size compr. mode */ - uint32_t compr_buf_size; /* used by size compr. mode */ - uint32_t stat_compr_orig_size; - uint32_t stat_compr_new_size; - uint32_t stat_compr_blocks; - uint32_t stat_decompr_blocks; + struct list_head list; + int priority; /* used by prirority comr. mode */ + char *name; + char compr; /* JFFS2_COMPR_XXX */ + int (*compress)(unsigned char *data_in, unsigned char *cpage_out, + uint32_t *srclen, uint32_t *destlen, void *model); + int (*decompress)(unsigned char *cdata_in, unsigned char *data_out, + uint32_t cdatalen, uint32_t datalen, void *model); + int usecount; + int disabled; /* if set the compressor won't compress */ + unsigned char *compr_buf; /* used by size compr. mode */ + uint32_t compr_buf_size; /* used by size compr. mode */ + uint32_t stat_compr_orig_size; + uint32_t stat_compr_new_size; + uint32_t stat_compr_blocks; + uint32_t stat_decompr_blocks; }; int jffs2_register_compressor(struct jffs2_compressor *comp); @@ -64,12 +68,12 @@ int jffs2_compressors_init(void); int jffs2_compressors_exit(void); uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, - unsigned char *data_in, unsigned char **cpage_out, - uint32_t *datalen, uint32_t *cdatalen); + unsigned char *data_in, unsigned char **cpage_out, + uint32_t *datalen, uint32_t *cdatalen); int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, - uint16_t comprtype, unsigned char *cdata_in, - unsigned char *data_out, uint32_t cdatalen, uint32_t datalen); + uint16_t comprtype, unsigned char *cdata_in, + unsigned char *data_out, uint32_t cdatalen, uint32_t datalen); void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig); @@ -90,5 +94,9 @@ void jffs2_rtime_exit(void); int jffs2_zlib_init(void); void jffs2_zlib_exit(void); #endif +#ifdef CONFIG_JFFS2_LZO +int jffs2_lzo_init(void); +void jffs2_lzo_exit(void); +#endif #endif /* __JFFS2_COMPR_H__ */ diff --git a/fs/jffs2/compr_lzo.c b/fs/jffs2/compr_lzo.c new file mode 100644 index 000000000000..47b045797e42 --- /dev/null +++ b/fs/jffs2/compr_lzo.c @@ -0,0 +1,108 @@ +/* + * JFFS2 -- Journalling Flash File System, Version 2. + * + * Copyright © 2007 Nokia Corporation. All rights reserved. + * + * Created by Richard Purdie <rpurdie@openedhand.com> + * + * For licensing information, see the file 'LICENCE' in this directory. + * + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/init.h> +#include <linux/lzo.h> +#include "compr.h" + +static void *lzo_mem; +static void *lzo_compress_buf; +static DEFINE_MUTEX(deflate_mutex); + +static void free_workspace(void) +{ + vfree(lzo_mem); + vfree(lzo_compress_buf); +} + +static int __init alloc_workspace(void) +{ + lzo_mem = vmalloc(LZO1X_MEM_COMPRESS); + lzo_compress_buf = vmalloc(lzo1x_worst_compress(PAGE_SIZE)); + + if (!lzo_mem || !lzo_compress_buf) { + printk(KERN_WARNING "Failed to allocate lzo deflate workspace\n"); + free_workspace(); + return -ENOMEM; + } + + return 0; +} + +static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out, + uint32_t *sourcelen, uint32_t *dstlen, void *model) +{ + size_t compress_size; + int ret; + + mutex_lock(&deflate_mutex); + ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem); + mutex_unlock(&deflate_mutex); + + if (ret != LZO_E_OK) + return -1; + + if (compress_size > *dstlen) + return -1; + + memcpy(cpage_out, lzo_compress_buf, compress_size); + *dstlen = compress_size; + + return 0; +} + +static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out, + uint32_t srclen, uint32_t destlen, void *model) +{ + size_t dl = destlen; + int ret; + + ret = lzo1x_decompress_safe(data_in, srclen, cpage_out, &dl); + + if (ret != LZO_E_OK || dl != destlen) + return -1; + + return 0; +} + +static struct jffs2_compressor jffs2_lzo_comp = { + .priority = JFFS2_LZO_PRIORITY, + .name = "lzo", + .compr = JFFS2_COMPR_LZO, + .compress = &jffs2_lzo_compress, + .decompress = &jffs2_lzo_decompress, + .disabled = 0, +}; + +int __init jffs2_lzo_init(void) +{ + int ret; + + ret = alloc_workspace(); + if (ret < 0) + return ret; + + ret = jffs2_register_compressor(&jffs2_lzo_comp); + if (ret) + free_workspace(); + + return ret; +} + +void jffs2_lzo_exit(void) +{ + jffs2_unregister_compressor(&jffs2_lzo_comp); + free_workspace(); +} diff --git a/fs/jffs2/compr_rtime.c b/fs/jffs2/compr_rtime.c index 0d0bfd2e4e0d..546d1538d076 100644 --- a/fs/jffs2/compr_rtime.c +++ b/fs/jffs2/compr_rtime.c @@ -104,7 +104,7 @@ static int jffs2_rtime_decompress(unsigned char *data_in, } } } - return 0; + return 0; } static struct jffs2_compressor jffs2_rtime_comp = { diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c index ea0431e047d5..c73fa89b5f8a 100644 --- a/fs/jffs2/compr_rubin.c +++ b/fs/jffs2/compr_rubin.c @@ -384,7 +384,7 @@ static int jffs2_rubinmips_decompress(unsigned char *data_in, void *model) { rubin_do_decompress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen); - return 0; + return 0; } static int jffs2_dynrubin_decompress(unsigned char *data_in, @@ -399,7 +399,7 @@ static int jffs2_dynrubin_decompress(unsigned char *data_in, bits[c] = data_in[c]; rubin_do_decompress(256, bits, data_in+8, cpage_out, sourcelen-8, dstlen); - return 0; + return 0; } static struct jffs2_compressor jffs2_rubinmips_comp = { diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c index 2b87fccc1557..cfd301a5edfc 100644 --- a/fs/jffs2/compr_zlib.c +++ b/fs/jffs2/compr_zlib.c @@ -181,7 +181,7 @@ static int jffs2_zlib_decompress(unsigned char *data_in, } zlib_inflateEnd(&inf_strm); mutex_unlock(&inflate_mutex); - return 0; + return 0; } static struct jffs2_compressor jffs2_zlib_comp = { @@ -203,11 +203,11 @@ int __init jffs2_zlib_init(void) ret = alloc_workspaces(); if (ret) - return ret; + return ret; ret = jffs2_register_compressor(&jffs2_zlib_comp); if (ret) - free_workspaces(); + free_workspaces(); return ret; } diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index c1dfca310dd6..8353eb9c1799 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -32,7 +32,7 @@ static int jffs2_mkdir (struct inode *,struct dentry *,int); static int jffs2_rmdir (struct inode *,struct dentry *); static int jffs2_mknod (struct inode *,struct dentry *,int,dev_t); static int jffs2_rename (struct inode *, struct dentry *, - struct inode *, struct dentry *); + struct inode *, struct dentry *); const struct file_operations jffs2_dir_operations = { @@ -182,6 +182,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, struct jffs2_inode_info *f, *dir_f; struct jffs2_sb_info *c; struct inode *inode; + struct posix_acl *acl; int ret; ri = jffs2_alloc_raw_inode(); @@ -192,7 +193,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, D1(printk(KERN_DEBUG "jffs2_create()\n")); - inode = jffs2_new_inode(dir_i, mode, ri); + inode = jffs2_new_inode(dir_i, mode, ri, &acl); if (IS_ERR(inode)) { D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n")); @@ -212,12 +213,12 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, dentry->d_name.name, dentry->d_name.len); if (ret) - goto fail; + goto fail_acl; ret = jffs2_init_security(inode, dir_i); if (ret) - goto fail; - ret = jffs2_init_acl(inode, dir_i); + goto fail_acl; + ret = jffs2_init_acl(inode, acl); if (ret) goto fail; @@ -230,6 +231,8 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages)); return 0; + fail_acl: + posix_acl_release(acl); fail: make_bad_inode(inode); iput(inode); @@ -306,6 +309,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char struct jffs2_full_dirent *fd; int namelen; uint32_t alloclen; + struct posix_acl *acl; int ret, targetlen = strlen(target); /* FIXME: If you care. We'd need to use frags for the target @@ -332,7 +336,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char return ret; } - inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri); + inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri, &acl); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -362,6 +366,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); + posix_acl_release(acl); return PTR_ERR(fn); } @@ -372,6 +377,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); + posix_acl_release(acl); return -ENOMEM; } @@ -389,9 +395,10 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); + posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, dir_i); + ret = jffs2_init_acl(inode, acl); if (ret) { jffs2_clear_inode(inode); return ret; @@ -469,6 +476,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) struct jffs2_full_dirent *fd; int namelen; uint32_t alloclen; + struct posix_acl *acl; int ret; mode |= S_IFDIR; @@ -491,7 +499,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) return ret; } - inode = jffs2_new_inode(dir_i, mode, ri); + inode = jffs2_new_inode(dir_i, mode, ri, &acl); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -518,6 +526,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); + posix_acl_release(acl); return PTR_ERR(fn); } /* No data here. Only a metadata node, which will be @@ -531,9 +540,10 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); + posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, dir_i); + ret = jffs2_init_acl(inode, acl); if (ret) { jffs2_clear_inode(inode); return ret; @@ -629,6 +639,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de union jffs2_device_node dev; int devlen = 0; uint32_t alloclen; + struct posix_acl *acl; int ret; if (!new_valid_dev(rdev)) @@ -655,7 +666,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de return ret; } - inode = jffs2_new_inode(dir_i, mode, ri); + inode = jffs2_new_inode(dir_i, mode, ri, &acl); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -684,6 +695,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); + posix_acl_release(acl); return PTR_ERR(fn); } /* No data here. Only a metadata node, which will be @@ -697,9 +709,10 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); + posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, dir_i); + ret = jffs2_init_acl(inode, acl); if (ret) { jffs2_clear_inode(inode); return ret; @@ -770,7 +783,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de } static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry, - struct inode *new_dir_i, struct dentry *new_dentry) + struct inode *new_dir_i, struct dentry *new_dentry) { int ret; struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dir_i->i_sb); diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index 66e7c2f1e644..a1db9180633f 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -38,8 +38,8 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, #ifdef __ECOS ret = jffs2_flash_erase(c, jeb); if (!ret) { - jffs2_erase_succeeded(c, jeb); - return; + jffs2_erase_succeeded(c, jeb); + return; } bad_offset = jeb->offset; #else /* Linux */ @@ -50,12 +50,14 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL); if (!instr) { printk(KERN_WARNING "kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n"); + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); list_move(&jeb->list, &c->erase_pending_list); c->erasing_size -= c->sector_size; c->dirty_size += c->sector_size; jeb->dirty_size = c->sector_size; spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); return; } @@ -82,12 +84,14 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, if (ret == -ENOMEM || ret == -EAGAIN) { /* Erase failed immediately. Refile it on the list */ D1(printk(KERN_DEBUG "Erase at 0x%08x failed: %d. Refiling on erase_pending_list\n", jeb->offset, ret)); + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); list_move(&jeb->list, &c->erase_pending_list); c->erasing_size -= c->sector_size; c->dirty_size += c->sector_size; jeb->dirty_size = c->sector_size; spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); return; } @@ -114,6 +118,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count) jeb = list_entry(c->erase_complete_list.next, struct jffs2_eraseblock, list); list_del(&jeb->list); spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); jffs2_mark_erased_block(c, jeb); if (!--count) { @@ -134,6 +139,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count) jffs2_free_jeb_node_refs(c, jeb); list_add(&jeb->list, &c->erasing_list); spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); jffs2_erase_block(c, jeb); @@ -142,23 +148,25 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count) } /* Be nice */ - cond_resched(); + yield(); + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); } spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); done: D1(printk(KERN_DEBUG "jffs2_erase_pending_blocks completed\n")); - - up(&c->erase_free_sem); } static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) { D1(printk(KERN_DEBUG "Erase completed successfully at 0x%08x\n", jeb->offset)); + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); list_move_tail(&jeb->list, &c->erase_complete_list); spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); /* Ensure that kupdated calls us again to mark them clean */ jffs2_erase_pending_trigger(c); } @@ -172,22 +180,26 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock failed too many times. */ if (!jffs2_write_nand_badblock(c, jeb, bad_offset)) { /* We'd like to give this block another try. */ + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); list_move(&jeb->list, &c->erase_pending_list); c->erasing_size -= c->sector_size; c->dirty_size += c->sector_size; jeb->dirty_size = c->sector_size; spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); return; } } + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); c->erasing_size -= c->sector_size; c->bad_size += c->sector_size; list_move(&jeb->list, &c->bad_list); c->nr_erasing_blocks--; spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); wake_up(&c->erase_wait); } @@ -317,6 +329,33 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl size_t retlen; int ret = -EIO; + if (c->mtd->point) { + unsigned long *wordebuf; + + ret = c->mtd->point(c->mtd, jeb->offset, c->sector_size, &retlen, (unsigned char **)&ebuf); + if (ret) { + D1(printk(KERN_DEBUG "MTD point failed %d\n", ret)); + goto do_flash_read; + } + if (retlen < c->sector_size) { + /* Don't muck about if it won't let us point to the whole erase sector */ + D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", retlen)); + c->mtd->unpoint(c->mtd, ebuf, jeb->offset, retlen); + goto do_flash_read; + } + wordebuf = ebuf-sizeof(*wordebuf); + retlen /= sizeof(*wordebuf); + do { + if (*++wordebuf != ~0) + break; + } while(--retlen); + c->mtd->unpoint(c->mtd, ebuf, jeb->offset, c->sector_size); + if (retlen) + printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08tx\n", + *wordebuf, jeb->offset + c->sector_size-retlen*sizeof(*wordebuf)); + return 0; + } + do_flash_read: ebuf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!ebuf) { printk(KERN_WARNING "Failed to allocate page buffer for verifying erase at 0x%08x. Refiling\n", jeb->offset); @@ -362,7 +401,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb { size_t retlen; int ret; - uint32_t bad_offset; + uint32_t uninitialized_var(bad_offset); switch (jffs2_block_check_erase(c, jeb, &bad_offset)) { case -EAGAIN: goto refile; @@ -417,6 +456,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL, c->cleanmarker_size, NULL); } + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); c->erasing_size -= c->sector_size; c->free_size += jeb->free_size; @@ -429,23 +469,28 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb c->nr_erasing_blocks--; c->nr_free_blocks++; spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); wake_up(&c->erase_wait); return; filebad: + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); /* Stick it on a list (any list) so erase_failed can take it right off again. Silly, but shouldn't happen often. */ list_add(&jeb->list, &c->erasing_list); spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); jffs2_erase_failed(c, jeb, bad_offset); return; refile: /* Stick it back on the list from whence it came and come back later */ jffs2_erase_pending_trigger(c); + down(&c->erase_free_sem); spin_lock(&c->erase_completion_lock); list_add(&jeb->list, &c->erase_complete_list); spin_unlock(&c->erase_completion_lock); + up(&c->erase_free_sem); return; } diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 8bc727b71696..ed85f9afdbc8 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -24,7 +24,7 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c); -static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) +int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) { struct jffs2_full_dnode *old_metadata, *new_metadata; struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); @@ -36,10 +36,8 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) unsigned int ivalid; uint32_t alloclen; int ret; + D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino)); - ret = inode_change_ok(inode, iattr); - if (ret) - return ret; /* Special cases - we don't want more than one data node for these types on the medium at any time. So setattr @@ -183,9 +181,14 @@ int jffs2_setattr(struct dentry *dentry, struct iattr *iattr) { int rc; + rc = inode_change_ok(dentry->d_inode, iattr); + if (rc) + return rc; + rc = jffs2_do_setattr(dentry->d_inode, iattr); if (!rc && (iattr->ia_valid & ATTR_MODE)) rc = jffs2_acl_chmod(dentry->d_inode); + return rc; } @@ -399,7 +402,8 @@ void jffs2_write_super (struct super_block *sb) /* jffs2_new_inode: allocate a new inode and inocache, add it to the hash, fill in the raw_inode while you're at it. */ -struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri) +struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri, + struct posix_acl **acl) { struct inode *inode; struct super_block *sb = dir_i->i_sb; @@ -431,7 +435,23 @@ struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_i } else { ri->gid = cpu_to_je16(current->fsgid); } - ri->mode = cpu_to_jemode(mode); + + /* POSIX ACLs have to be processed now, at least partly. + The umask is only applied if there's no default ACL */ + if (!S_ISLNK(mode)) { + *acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT); + if (IS_ERR(*acl)) { + make_bad_inode(inode); + iput(inode); + inode = (void *)*acl; + *acl = NULL; + return inode; + } + if (!(*acl)) + mode &= ~current->fs->umask; + } else { + *acl = NULL; + } ret = jffs2_do_new_inode (c, f, mode, ri); if (ret) { make_bad_inode(inode); diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index 2d99e06ab223..32ff0373aa04 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -122,6 +122,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) struct jffs2_inode_cache *ic; struct jffs2_eraseblock *jeb; struct jffs2_raw_node_ref *raw; + uint32_t gcblock_dirty; int ret = 0, inum, nlink; int xattr = 0; @@ -236,6 +237,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) } raw = jeb->gc_node; + gcblock_dirty = jeb->dirty_size; while(ref_obsolete(raw)) { D1(printk(KERN_DEBUG "Node at 0x%08x is obsolete... skipping\n", ref_offset(raw))); @@ -282,7 +284,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) } else { ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic, raw); } - goto release_sem; + goto test_gcnode; } #endif @@ -376,7 +378,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) if (ret != -EBADFD) { spin_unlock(&c->inocache_lock); - goto release_sem; + goto test_gcnode; } /* Fall through if it wanted us to, with inocache_lock held */ @@ -407,6 +409,12 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) jffs2_gc_release_inode(c, f); + test_gcnode: + if (jeb->dirty_size == gcblock_dirty && !ref_obsolete(jeb->gc_node)) { + /* Eep. This really should never happen. GC is broken */ + printk(KERN_ERR "Error garbage collecting node at %08x!\n", ref_offset(jeb->gc_node)); + ret = -ENOSPC; + } release_sem: up(&c->alloc_sem); @@ -556,7 +564,7 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c, node = kmalloc(rawlen, GFP_KERNEL); if (!node) - return -ENOMEM; + return -ENOMEM; ret = jffs2_flash_read(c, ref_offset(raw), rawlen, &retlen, (char *)node); if (!ret && retlen != rawlen) @@ -598,10 +606,15 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c, goto bail; } + if (strnlen(node->d.name, node->d.nsize) != node->d.nsize) { + printk(KERN_WARNING "Name in dirent node at 0x%08x contains zeroes\n", ref_offset(raw)); + goto bail; + } + if (node->d.nsize) { crc = crc32(0, node->d.name, node->d.nsize); if (je32_to_cpu(node->d.name_crc) != crc) { - printk(KERN_WARNING "Name CRC failed on REF_PRISTINE dirent ode at 0x%08x: Read 0x%08x, calculated 0x%08x\n", + printk(KERN_WARNING "Name CRC failed on REF_PRISTINE dirent node at 0x%08x: Read 0x%08x, calculated 0x%08x\n", ref_offset(raw), je32_to_cpu(node->d.name_crc), crc); goto bail; } @@ -624,7 +637,7 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c, if (ret || (retlen != rawlen)) { printk(KERN_NOTICE "Write of %d bytes at 0x%08x failed. returned %d, retlen %zd\n", - rawlen, phys_ofs, ret, retlen); + rawlen, phys_ofs, ret, retlen); if (retlen) { jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, rawlen, NULL); } else { diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h index b13298a824ed..3a2197f3c812 100644 --- a/fs/jffs2/jffs2_fs_sb.h +++ b/fs/jffs2/jffs2_fs_sb.h @@ -69,6 +69,8 @@ struct jffs2_sb_info { uint8_t resv_blocks_gctrigger; /* ... wake up the GC thread */ uint8_t resv_blocks_gcbad; /* ... pick a block from the bad_list to GC */ uint8_t resv_blocks_gcmerge; /* ... merge pages when garbage collecting */ + /* Number of 'very dirty' blocks before we trigger immediate GC */ + uint8_t vdirty_blocks_gctrigger; uint32_t nospc_dirty_size; @@ -106,6 +108,9 @@ struct jffs2_sb_info { uint32_t wbuf_pagesize; /* 0 for NOR and other flashes with no wbuf */ +#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY + unsigned char *wbuf_verify; /* read-back buffer for verification */ +#endif #ifdef CONFIG_JFFS2_FS_WRITEBUFFER unsigned char *wbuf; /* Write-behind buffer for NAND flash */ uint32_t wbuf_ofs; diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index bc5509fe577b..ec1aae9e695e 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -127,7 +127,7 @@ static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_nod return ((struct jffs2_inode_cache *)raw); } - /* flash_offset & 3 always has to be zero, because nodes are + /* flash_offset & 3 always has to be zero, because nodes are always aligned at 4 bytes. So we have a couple of extra bits to play with, which indicate the node's status; see below: */ #define REF_UNCHECKED 0 /* We haven't yet checked the CRC or built its inode */ diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index dbc908ad622b..a0313fa8748e 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -154,7 +154,7 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, while(ret == -EAGAIN) { ret = jffs2_do_reserve_space(c, minsize, len, sumsize); if (ret) { - D1(printk(KERN_DEBUG "jffs2_reserve_space_gc: looping, ret is %d\n", ret)); + D1(printk(KERN_DEBUG "jffs2_reserve_space_gc: looping, ret is %d\n", ret)); } } spin_unlock(&c->erase_completion_lock); @@ -423,7 +423,12 @@ struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c, even after refiling c->nextblock */ if ((c->nextblock || ((ofs & 3) != REF_OBSOLETE)) && (jeb != c->nextblock || (ofs & ~3) != jeb->offset + (c->sector_size - jeb->free_size))) { - printk(KERN_WARNING "argh. node added in wrong place\n"); + printk(KERN_WARNING "argh. node added in wrong place at 0x%08x(%d)\n", ofs & ~3, ofs & 3); + if (c->nextblock) + printk(KERN_WARNING "nextblock 0x%08x", c->nextblock->offset); + else + printk(KERN_WARNING "No nextblock"); + printk(", expected at %08x\n", jeb->offset + (c->sector_size - jeb->free_size)); return ERR_PTR(-EINVAL); } #endif @@ -717,6 +722,8 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c) { int ret = 0; uint32_t dirty; + int nr_very_dirty = 0; + struct jffs2_eraseblock *jeb; if (c->unchecked_size) { D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): unchecked_size %d, checked_ino #%d\n", @@ -738,8 +745,18 @@ int jffs2_thread_should_wake(struct jffs2_sb_info *c) (dirty > c->nospc_dirty_size)) ret = 1; - D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x: %s\n", - c->nr_free_blocks, c->nr_erasing_blocks, c->dirty_size, ret?"yes":"no")); + list_for_each_entry(jeb, &c->very_dirty_list, list) { + nr_very_dirty++; + if (nr_very_dirty == c->vdirty_blocks_gctrigger) { + ret = 1; + /* In debug mode, actually go through and count them all */ + D1(continue); + break; + } + } + + D1(printk(KERN_DEBUG "jffs2_thread_should_wake(): nr_free_blocks %d, nr_erasing_blocks %d, dirty_size 0x%x, vdirty_blocks %d: %s\n", + c->nr_free_blocks, c->nr_erasing_blocks, c->dirty_size, nr_very_dirty, ret?"yes":"no")); return ret; } diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index 80daea96bbc2..f6743a915cf3 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -173,12 +173,15 @@ int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long); extern const struct inode_operations jffs2_symlink_inode_operations; /* fs.c */ +struct posix_acl; + int jffs2_setattr (struct dentry *, struct iattr *); +int jffs2_do_setattr (struct inode *, struct iattr *); void jffs2_read_inode (struct inode *); void jffs2_clear_inode (struct inode *); void jffs2_dirty_inode(struct inode *inode); struct inode *jffs2_new_inode (struct inode *dir_i, int mode, - struct jffs2_raw_inode *ri); + struct jffs2_raw_inode *ri, struct posix_acl **acl); int jffs2_statfs (struct dentry *, struct kstatfs *); void jffs2_write_super (struct super_block *); int jffs2_remount_fs (struct super_block *, int *, char *); diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index b5baa356fed2..2eae5d2dbebe 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -65,7 +65,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer); if (!err && retlen < tn->csize) { JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize); - c->mtd->unpoint(c->mtd, buffer, ofs, len); + c->mtd->unpoint(c->mtd, buffer, ofs, retlen); } else if (err) JFFS2_WARNING("MTD point failed: error code %d.\n", err); else @@ -211,7 +211,7 @@ static void jffs2_kill_tn(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info * * ordering. * * Returns 0 if the node was handled (including marking it obsolete) - * < 0 an if error occurred + * < 0 an if error occurred */ static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c, struct jffs2_readinode_info *rii, @@ -862,8 +862,8 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re JFFS2_ERROR("REF_UNCHECKED but unknown node at %#08x\n", ref_offset(ref)); JFFS2_ERROR("Node is {%04x,%04x,%08x,%08x}. Please report this error.\n", - je16_to_cpu(un->magic), je16_to_cpu(un->nodetype), - je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc)); + je16_to_cpu(un->magic), je16_to_cpu(un->nodetype), + je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc)); jffs2_mark_node_obsolete(c, ref); return 0; } diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 6c75cd433342..272872d27fd5 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -101,7 +101,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c) if (!ret && pointlen < c->mtd->size) { /* Don't muck about if it won't let us point to the whole flash */ D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen)); - c->mtd->unpoint(c->mtd, flashbuf, 0, c->mtd->size); + c->mtd->unpoint(c->mtd, flashbuf, 0, pointlen); flashbuf = NULL; } if (ret) @@ -863,7 +863,7 @@ scan_more: switch (je16_to_cpu(node->nodetype) & JFFS2_COMPAT_MASK) { case JFFS2_FEATURE_ROCOMPAT: printk(KERN_NOTICE "Read-only compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs); - c->flags |= JFFS2_SB_FLAG_RO; + c->flags |= JFFS2_SB_FLAG_RO; if (!(jffs2_is_readonly(c))) return -EROFS; if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(node->totlen))))) @@ -1004,6 +1004,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo { struct jffs2_full_dirent *fd; struct jffs2_inode_cache *ic; + uint32_t checkedlen; uint32_t crc; int err; @@ -1024,12 +1025,18 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo pseudo_random += je32_to_cpu(rd->version); - fd = jffs2_alloc_full_dirent(rd->nsize+1); + /* Should never happen. Did. (OLPC trac #4184)*/ + checkedlen = strnlen(rd->name, rd->nsize); + if (checkedlen < rd->nsize) { + printk(KERN_ERR "Dirent at %08x has zeroes in name. Truncating to %d chars\n", + ofs, checkedlen); + } + fd = jffs2_alloc_full_dirent(checkedlen+1); if (!fd) { return -ENOMEM; } - memcpy(&fd->name, rd->name, rd->nsize); - fd->name[rd->nsize] = 0; + memcpy(&fd->name, rd->name, checkedlen); + fd->name[checkedlen] = 0; crc = crc32(0, fd->name, rd->nsize); if (crc != je32_to_cpu(rd->name_crc)) { @@ -1055,7 +1062,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo fd->next = NULL; fd->version = je32_to_cpu(rd->version); fd->ino = je32_to_cpu(rd->ino); - fd->nhash = full_name_hash(fd->name, rd->nsize); + fd->nhash = full_name_hash(fd->name, checkedlen); fd->type = rd->type; jffs2_add_fd_to_list(c, fd, &ic->scan_dents); diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c index bc9f6ba10823..02c39c64ecb3 100644 --- a/fs/jffs2/security.c +++ b/fs/jffs2/security.c @@ -38,9 +38,9 @@ int jffs2_init_security(struct inode *inode, struct inode *dir) } rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0); - kfree(name); - kfree(value); - return rc; + kfree(name); + kfree(value); + return rc; } /* ---- XATTR Handler for "security.*" ----------------- */ diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index d828b296392a..629af01e5ade 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -2,10 +2,10 @@ * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>, - * Zoltan Sogor <weth@inf.u-szeged.hu>, - * Patrik Kluba <pajko@halom.u-szeged.hu>, - * University of Szeged, Hungary - * 2006 KaiGai Kohei <kaigai@ak.jp.nec.com> + * Zoltan Sogor <weth@inf.u-szeged.hu>, + * Patrik Kluba <pajko@halom.u-szeged.hu>, + * University of Szeged, Hungary + * 2006 KaiGai Kohei <kaigai@ak.jp.nec.com> * * For licensing information, see the file 'LICENCE' in this directory. * @@ -429,6 +429,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras case JFFS2_NODETYPE_DIRENT: { struct jffs2_sum_dirent_flash *spd; + int checkedlen; spd = sp; dbg_summary("Dirent at 0x%08x-0x%08x\n", @@ -436,12 +437,25 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras jeb->offset + je32_to_cpu(spd->offset) + je32_to_cpu(spd->totlen)); - fd = jffs2_alloc_full_dirent(spd->nsize+1); + /* This should never happen, but https://dev.laptop.org/ticket/4184 */ + checkedlen = strnlen(spd->name, spd->nsize); + if (!checkedlen) { + printk(KERN_ERR "Dirent at %08x has zero at start of name. Aborting mount.\n", + jeb->offset + je32_to_cpu(spd->offset)); + return -EIO; + } + if (checkedlen < spd->nsize) { + printk(KERN_ERR "Dirent at %08x has zeroes in name. Truncating to %d chars\n", + jeb->offset + je32_to_cpu(spd->offset), checkedlen); + } + + + fd = jffs2_alloc_full_dirent(checkedlen+1); if (!fd) return -ENOMEM; - memcpy(&fd->name, spd->name, spd->nsize); - fd->name[spd->nsize] = 0; + memcpy(&fd->name, spd->name, checkedlen); + fd->name[checkedlen] = 0; ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino)); if (!ic) { @@ -455,7 +469,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras fd->next = NULL; fd->version = je32_to_cpu(spd->version); fd->ino = je32_to_cpu(spd->ino); - fd->nhash = full_name_hash(fd->name, spd->nsize); + fd->nhash = full_name_hash(fd->name, checkedlen); fd->type = spd->type; jffs2_add_fd_to_list(c, fd, &ic->scan_dents); diff --git a/fs/jffs2/summary.h b/fs/jffs2/summary.h index 0c6669e21390..8bf34f2fa5ce 100644 --- a/fs/jffs2/summary.h +++ b/fs/jffs2/summary.h @@ -2,9 +2,9 @@ * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>, - * Zoltan Sogor <weth@inf.u-szeged.hu>, - * Patrik Kluba <pajko@halom.u-szeged.hu>, - * University of Szeged, Hungary + * Zoltan Sogor <weth@inf.u-szeged.hu>, + * Patrik Kluba <pajko@halom.u-szeged.hu>, + * University of Szeged, Hungary * * For licensing information, see the file 'LICENCE' in this directory. * diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index 91d1d0f1c66c..d1d4f27464ba 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -220,6 +220,47 @@ static struct jffs2_raw_node_ref **jffs2_incore_replace_raw(struct jffs2_sb_info return NULL; } +#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY +static int jffs2_verify_write(struct jffs2_sb_info *c, unsigned char *buf, + uint32_t ofs) +{ + int ret; + size_t retlen; + char *eccstr; + + ret = c->mtd->read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify); + if (ret && ret != -EUCLEAN && ret != -EBADMSG) { + printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x failed: %d\n", c->wbuf_ofs, ret); + return ret; + } else if (retlen != c->wbuf_pagesize) { + printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x gave short read: %zd not %d.\n", ofs, retlen, c->wbuf_pagesize); + return -EIO; + } + if (!memcmp(buf, c->wbuf_verify, c->wbuf_pagesize)) + return 0; + + if (ret == -EUCLEAN) + eccstr = "corrected"; + else if (ret == -EBADMSG) + eccstr = "correction failed"; + else + eccstr = "OK or unused"; + + printk(KERN_WARNING "Write verify error (ECC %s) at %08x. Wrote:\n", + eccstr, c->wbuf_ofs); + print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, + c->wbuf, c->wbuf_pagesize, 0); + + printk(KERN_WARNING "Read back:\n"); + print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, + c->wbuf_verify, c->wbuf_pagesize, 0); + + return -EIO; +} +#else +#define jffs2_verify_write(c,b,o) (0) +#endif + /* Recover from failure to write wbuf. Recover the nodes up to the * wbuf, not the one which we were starting to try to write. */ @@ -380,7 +421,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c) ret = c->mtd->write(c->mtd, ofs, towrite, &retlen, rewrite_buf); - if (ret || retlen != towrite) { + if (ret || retlen != towrite || jffs2_verify_write(c, rewrite_buf, ofs)) { /* Argh. We tried. Really we did. */ printk(KERN_CRIT "Recovery of wbuf failed due to a second write error\n"); kfree(buf); @@ -587,15 +628,16 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad) ret = c->mtd->write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen, c->wbuf); - if (ret || retlen != c->wbuf_pagesize) { - if (ret) - printk(KERN_WARNING "jffs2_flush_wbuf(): Write failed with %d\n",ret); - else { - printk(KERN_WARNING "jffs2_flush_wbuf(): Write was short: %zd instead of %d\n", - retlen, c->wbuf_pagesize); - ret = -EIO; - } - + if (ret) { + printk(KERN_WARNING "jffs2_flush_wbuf(): Write failed with %d\n", ret); + goto wfail; + } else if (retlen != c->wbuf_pagesize) { + printk(KERN_WARNING "jffs2_flush_wbuf(): Write was short: %zd instead of %d\n", + retlen, c->wbuf_pagesize); + ret = -EIO; + goto wfail; + } else if ((ret = jffs2_verify_write(c, c->wbuf, c->wbuf_ofs))) { + wfail: jffs2_wbuf_recover(c); return ret; @@ -966,8 +1008,8 @@ exit: #define NR_OOB_SCAN_PAGES 4 -/* For historical reasons we use only 12 bytes for OOB clean marker */ -#define OOB_CM_SIZE 12 +/* For historical reasons we use only 8 bytes for OOB clean marker */ +#define OOB_CM_SIZE 8 static const struct jffs2_unknown_node oob_cleanmarker = { @@ -1021,8 +1063,8 @@ int jffs2_check_oob_empty(struct jffs2_sb_info *c, /* * Check for a valid cleanmarker. * Returns: 0 if a valid cleanmarker was found - * 1 if no cleanmarker was found - * negative error code if an error occurred + * 1 if no cleanmarker was found + * negative error code if an error occurred */ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) @@ -1138,11 +1180,22 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c) return -ENOMEM; } +#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY + c->wbuf_verify = kmalloc(c->wbuf_pagesize, GFP_KERNEL); + if (!c->wbuf_verify) { + kfree(c->oobbuf); + kfree(c->wbuf); + return -ENOMEM; + } +#endif return 0; } void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c) { +#ifdef CONFIG_JFFS2_FS_WBUF_VERIFY + kfree(c->wbuf_verify); +#endif kfree(c->wbuf); kfree(c->oobbuf); } diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c index 664c164aa67c..2f5695446d0f 100644 --- a/fs/jffs2/write.c +++ b/fs/jffs2/write.c @@ -215,6 +215,17 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff BUG(); }); + if (strnlen(name, namelen) != namelen) { + /* This should never happen, but seems to have done on at least one + occasion: https://dev.laptop.org/ticket/4184 */ + printk(KERN_CRIT "Error in jffs2_write_dirent() -- name contains zero bytes!\n"); + printk(KERN_CRIT "Directory inode #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x\n", + je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino), + je32_to_cpu(rd->name_crc)); + WARN_ON(1); + return ERR_PTR(-EIO); + } + vecs[0].iov_base = rd; vecs[0].iov_len = sizeof(*rd); vecs[1].iov_base = (unsigned char *)name; @@ -226,7 +237,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff fd->version = je32_to_cpu(rd->version); fd->ino = je32_to_cpu(rd->ino); - fd->nhash = full_name_hash(name, strlen(name)); + fd->nhash = full_name_hash(name, namelen); fd->type = rd->type; memcpy(fd->name, name, namelen); fd->name[namelen]=0; diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h index 3b0ff2925937..6e3b5ddfb7ab 100644 --- a/fs/jffs2/xattr.h +++ b/fs/jffs2/xattr.h @@ -75,7 +75,7 @@ extern void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c); extern void jffs2_clear_xattr_subsystem(struct jffs2_sb_info *c); extern struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c, - uint32_t xid, uint32_t version); + uint32_t xid, uint32_t version); extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); extern void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c index 40942bc516bb..8bbeab90ada1 100644 --- a/fs/jffs2/xattr_user.c +++ b/fs/jffs2/xattr_user.c @@ -17,7 +17,7 @@ #include "nodelist.h" static int jffs2_user_getxattr(struct inode *inode, const char *name, - void *buffer, size_t size) + void *buffer, size_t size) { if (!strcmp(name, "")) return -EINVAL; @@ -25,7 +25,7 @@ static int jffs2_user_getxattr(struct inode *inode, const char *name, } static int jffs2_user_setxattr(struct inode *inode, const char *name, const void *buffer, - size_t size, int flags) + size_t size, int flags) { if (!strcmp(name, "")) return -EINVAL; diff --git a/include/asm-blackfin/mach-bf548/dma.h b/include/asm-blackfin/mach-bf548/dma.h index fcc8b4c34c6a..14cb10cc24ae 100644 --- a/include/asm-blackfin/mach-bf548/dma.h +++ b/include/asm-blackfin/mach-bf548/dma.h @@ -55,6 +55,7 @@ #define CH_SPORT3_RX 20 #define CH_SPORT3_TX 21 #define CH_SDH 22 +#define CH_NFC 22 #define CH_SPI2 23 #define CH_MEM_STREAM0_DEST 24 diff --git a/include/asm-blackfin/nand.h b/include/asm-blackfin/nand.h new file mode 100644 index 000000000000..afbaafa793f1 --- /dev/null +++ b/include/asm-blackfin/nand.h @@ -0,0 +1,47 @@ +/* linux/include/asm-blackfin/nand.h + * + * Copyright (c) 2007 Analog Devices, Inc. + * Bryan Wu <bryan.wu@analog.com> + * + * BF5XX - NAND flash controller platfrom_device info + * + * 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. + */ + +/* struct bf5xx_nand_platform + * + * define a interface between platfrom board specific code and + * bf54x NFC driver. + * + * nr_partitions = number of partitions pointed to be partitoons (or zero) + * partitions = mtd partition list + */ + +#define NFC_PG_SIZE_256 0 +#define NFC_PG_SIZE_512 1 +#define NFC_PG_SIZE_OFFSET 9 + +#define NFC_NWIDTH_8 0 +#define NFC_NWIDTH_16 1 +#define NFC_NWIDTH_OFFSET 8 + +#define NFC_RDDLY_OFFSET 4 +#define NFC_WRDLY_OFFSET 0 + +#define NFC_STAT_NBUSY 1 + +struct bf5xx_nand_platform { + /* NAND chip information */ + unsigned short page_size; + unsigned short data_width; + + /* RD/WR strobe delay timing information, all times in SCLK cycles */ + unsigned short rd_dly; + unsigned short wr_dly; + + /* NAND MTD partition information */ + int nr_partitions; + struct mtd_partition *partitions; +}; diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h index 840631fa5ff1..6b563cae23df 100644 --- a/include/linux/jffs2.h +++ b/include/linux/jffs2.h @@ -46,6 +46,7 @@ #define JFFS2_COMPR_COPY 0x04 #define JFFS2_COMPR_DYNRUBIN 0x05 #define JFFS2_COMPR_ZLIB 0x06 +#define JFFS2_COMPR_LZO 0x07 /* Compatibility flags. */ #define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */ #define JFFS2_NODE_ACCURATE 0x2000 diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index 123948b14547..e17c5343cf51 100644 --- a/include/linux/mtd/cfi.h +++ b/include/linux/mtd/cfi.h @@ -57,6 +57,15 @@ #define cfi_interleave_is_8(cfi) (0) #endif +#ifndef cfi_interleave +#warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. +static inline int cfi_interleave(void *cfi) +{ + BUG(); + return 0; +} +#endif + static inline int cfi_interleave_supported(int i) { switch (i) { diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h index a293a3b78e05..39e7d2a1be9a 100644 --- a/include/linux/mtd/flashchip.h +++ b/include/linux/mtd/flashchip.h @@ -40,6 +40,7 @@ typedef enum { FL_POINT, FL_XIP_WHILE_ERASING, FL_XIP_WHILE_WRITING, + FL_SHUTDOWN, FL_UNKNOWN } flstate_t; diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index 81f3a314dd76..a9fae032ba81 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -125,7 +125,15 @@ #endif #ifndef map_bankwidth -#error "No bus width supported. What's the point?" +#warning "No CONFIG_MTD_MAP_BANK_WIDTH_xx selected. No NOR chip support can work" +static inline int map_bankwidth(void *map) +{ + BUG(); + return 0; +} +#define map_bankwidth_is_large(map) (0) +#define map_words(map) (0) +#define MAX_MAP_BANKWIDTH 1 #endif static inline int map_bankwidth_supported(int w) diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index fd64ccfbce02..783fc983417c 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -133,6 +133,13 @@ struct mtd_info { int numeraseregions; struct mtd_erase_region_info *eraseregions; + /* + * Erase is an asynchronous operation. Device drivers are supposed + * to call instr->callback() whenever the operation completes, even + * if it completes with a failure. + * Callers are supposed to pass a callback function and wait for it + * to be called before writing to the block. + */ int (*erase) (struct mtd_info *mtd, struct erase_info *instr); /* This stuff for eXecute-In-Place */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index d2365c8dcacc..c42bc7f533a5 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -432,6 +432,7 @@ struct nand_chip { #define NAND_MFR_STMICRO 0x20 #define NAND_MFR_HYNIX 0xad #define NAND_MFR_MICRON 0x2c +#define NAND_MFR_AMD 0x01 /** * struct nand_flash_dev - NAND Flash Device ID Structure diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index a56d24ada505..fd0a260e070b 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -60,6 +60,7 @@ struct onenand_bufferram { * @erase_shift: [INTERN] number of address bits in a block * @page_shift: [INTERN] number of address bits in a page * @page_mask: [INTERN] a page per block mask + * @writesize: [INTERN] a real page size * @bufferram_index: [INTERN] BufferRAM index * @bufferram: [INTERN] BufferRAM info * @readw: [REPLACEABLE] hardware specific function for read short @@ -100,6 +101,7 @@ struct onenand_chip { unsigned int erase_shift; unsigned int page_shift; unsigned int page_mask; + unsigned int writesize; unsigned int bufferram_index; struct onenand_bufferram bufferram[MAX_BUFFERRAM]; @@ -140,6 +142,8 @@ struct onenand_chip { #define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1) #define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1) #define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1) +#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0) +#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1) #define ONENAND_GET_SYS_CFG1(this) \ (this->read_word(this->base + ONENAND_REG_SYS_CFG1)) @@ -149,6 +153,13 @@ struct onenand_chip { #define ONENAND_IS_DDP(this) \ (this->device_id & ONENAND_DEVICE_IS_DDP) +#ifdef CONFIG_MTD_ONENAND_2X_PROGRAM +#define ONENAND_IS_2PLANE(this) \ + (this->options & ONENAND_HAS_2PLANE) +#else +#define ONENAND_IS_2PLANE(this) (0) +#endif + /* Check byte access in OneNAND */ #define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1) @@ -157,6 +168,7 @@ struct onenand_chip { */ #define ONENAND_HAS_CONT_LOCK (0x0001) #define ONENAND_HAS_UNLOCK_ALL (0x0002) +#define ONENAND_HAS_2PLANE (0x0004) #define ONENAND_PAGEBUF_ALLOC (0x1000) #define ONENAND_OOBBUF_ALLOC (0x2000) diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h index af94719890e7..c46161f4eee3 100644 --- a/include/linux/mtd/onenand_regs.h +++ b/include/linux/mtd/onenand_regs.h @@ -74,6 +74,8 @@ #define ONENAND_DEVICE_DENSITY_512Mb (0x002) #define ONENAND_DEVICE_DENSITY_1Gb (0x003) +#define ONENAND_DEVICE_DENSITY_2Gb (0x004) +#define ONENAND_DEVICE_DENSITY_4Gb (0x005) /* * Version ID Register F002h (R) @@ -111,6 +113,8 @@ #define ONENAND_CMD_READOOB (0x13) #define ONENAND_CMD_PROG (0x80) #define ONENAND_CMD_PROGOOB (0x1A) +#define ONENAND_CMD_2X_PROG (0x7D) +#define ONENAND_CMD_2X_CACHE_PROG (0x7F) #define ONENAND_CMD_UNLOCK (0x23) #define ONENAND_CMD_LOCK (0x2A) #define ONENAND_CMD_LOCK_TIGHT (0x2C) |
