diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-06 14:56:26 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-06 14:56:26 -0700 |
commit | 22ae77bc7ac115b9d518d5cbc13d39317079b2b0 (patch) | |
tree | 574b7af678c0b1ad2c891ac5066292746788ece8 /drivers/mtd/onenand | |
parent | e379ec7c42343c6b6ef06a98de7c94db41c1423e (diff) | |
parent | 30bbf1406714cf464c56e96e4ad6a291907f5023 (diff) | |
download | talos-obmc-linux-22ae77bc7ac115b9d518d5cbc13d39317079b2b0.tar.gz talos-obmc-linux-22ae77bc7ac115b9d518d5cbc13d39317079b2b0.zip |
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (53 commits)
[MTD] struct device - replace bus_id with dev_name(), dev_set_name()
[MTD] [NOR] Fixup for Numonyx M29W128 chips
[MTD] mtdpart: Make ecc_stats more realistic.
powerpc/85xx: TQM8548: Update DTS file for multi-chip support
powerpc: NAND: FSL UPM: document new bindings
[MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delays
[MTD] [NAND] FSL-UPM: add multi chip support
[MTD] [NOR] Add device parent info to physmap_of
[MTD] [NAND] Add support for NAND on the Socrates board
[MTD] [NAND] Add support for 4KiB pages.
[MTD] sysfs support should not depend on CONFIG_PROC_FS
[MTD] [NAND] Add parent info for CAFÉ controller
[MTD] support driver model updates
[MTD] driver model updates (part 2)
[MTD] driver model updates
[MTD] [NAND] move gen_nand's probe function to .devinit.text
[MTD] [MAPS] move sa1100 flash's probe function to .devinit.text
[MTD] fix use after free in register_mtd_blktrans
[MTD] [MAPS] Drop now unused sharpsl-flash map
[MTD] ofpart: Check name property to determine partition nodes.
...
Manually fix trivial conflict in drivers/mtd/maps/Makefile
Diffstat (limited to 'drivers/mtd/onenand')
-rw-r--r-- | drivers/mtd/onenand/omap2.c | 6 | ||||
-rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 145 |
2 files changed, 102 insertions, 49 deletions
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index 77a4f1446156..f2e9de1414df 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -294,6 +294,10 @@ static int omap3_onenand_read_bufferram(struct mtd_info *mtd, int area, if (bram_offset & 3 || (size_t)buf & 3 || count < 384) goto out_copy; + /* panic_write() may be in an interrupt context */ + if (in_interrupt()) + goto out_copy; + if (buf >= high_memory) { struct page *p1; @@ -672,6 +676,8 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev) c->mtd.priv = &c->onenand; c->mtd.owner = THIS_MODULE; + c->mtd.dev.parent = &pdev->dev; + if (c->dma_channel >= 0) { struct onenand_chip *this = &c->onenand; diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 529af271db17..30d6999e5f9f 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1455,7 +1455,8 @@ 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, column, thislen, subpage; + int written = 0, column, thislen = 0, subpage = 0; + int prev = 0, prevlen = 0, prev_subpage = 0, first = 1; int oobwritten = 0, oobcolumn, thisooblen, oobsize; size_t len = ops->len; size_t ooblen = ops->ooblen; @@ -1482,6 +1483,10 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, return -EINVAL; } + /* Check zero length */ + if (!len) + return 0; + if (ops->mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; else @@ -1492,79 +1497,121 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, column = to & (mtd->writesize - 1); /* Loop until all data write */ - while (written < len) { - u_char *wbuf = (u_char *) buf; + while (1) { + if (written < len) { + u_char *wbuf = (u_char *) buf; - thislen = min_t(int, mtd->writesize - column, len - written); - thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); + thislen = min_t(int, mtd->writesize - column, len - written); + thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); - cond_resched(); + cond_resched(); - this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); + this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); - /* Partial page write */ - subpage = thislen < mtd->writesize; - if (subpage) { - memset(this->page_buf, 0xff, mtd->writesize); - memcpy(this->page_buf + column, buf, thislen); - wbuf = this->page_buf; - } + /* Partial page write */ + subpage = thislen < mtd->writesize; + if (subpage) { + memset(this->page_buf, 0xff, mtd->writesize); + memcpy(this->page_buf + column, buf, thislen); + wbuf = this->page_buf; + } - this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); + this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); - if (oob) { - oobbuf = this->oob_buf; + 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); + /* 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; + oobwritten += thisooblen; + oob += thisooblen; + oobcolumn = 0; + } else + oobbuf = (u_char *) ffchars; + + this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); } else - oobbuf = (u_char *) ffchars; + ONENAND_SET_NEXT_BUFFERRAM(this); - this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); + /* + * 2 PLANE, MLC, and Flex-OneNAND doesn't support + * write-while-programe feature. + */ + if (!ONENAND_IS_2PLANE(this) && !first) { + ONENAND_SET_PREV_BUFFERRAM(this); - this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); + ret = this->wait(mtd, FL_WRITING); - ret = this->wait(mtd, FL_WRITING); + /* In partial page write we don't update bufferram */ + onenand_update_bufferram(mtd, prev, !ret && !prev_subpage); + if (ret) { + written -= prevlen; + printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); + break; + } - /* 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 (written == len) { + /* Only check verify write turn on */ + ret = onenand_verify(mtd, buf - len, to - len, len); + if (ret) + printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); + break; + } - if (ret) { - printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); - break; + ONENAND_SET_NEXT_BUFFERRAM(this); } - /* Only check verify write turn on */ - ret = onenand_verify(mtd, buf, to, thislen); - if (ret) { - printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); - break; - } + this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); - written += thislen; + /* + * 2 PLANE, MLC, and Flex-OneNAND wait here + */ + if (ONENAND_IS_2PLANE(this)) { + ret = this->wait(mtd, FL_WRITING); - if (written == len) - break; + /* In partial page write we don't update bufferram */ + onenand_update_bufferram(mtd, to, !ret && !subpage); + if (ret) { + printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); + break; + } + + /* Only check verify write turn on */ + ret = onenand_verify(mtd, buf, to, thislen); + if (ret) { + printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); + break; + } + + written += thislen; + + if (written == len) + break; + + } else + written += thislen; column = 0; + prev_subpage = subpage; + prev = to; + prevlen = thislen; to += thislen; buf += thislen; + first = 0; } + /* In error case, clear all bufferrams */ + if (written != len) + onenand_invalidate_bufferram(mtd, 0, -1); + ops->retlen = written; + ops->oobretlen = oobwritten; return ret; } |