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nand: Switch to byte-based block access

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Sector-based blk_write() should die; switch to byte-based
blk_pwrite() instead.  Likewise for blk_read().

This file is doing some complex computations to map various
flash page sizes (256, 512, and 2048) atop generic uses of
512-byte sector operations.  Perhaps someone will want to tidy
up the file for fewer gymnastics in managing addresses and
offsets, and less wasteful visits of 256-byte pages, but it
was out of scope for this series, where I just went with the
mechanical conversion.

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2016-05-06 10:26:36 -06:00 committed by Kevin Wolf
parent a7a5b7c0fc
commit 9fc0d361cc
1 changed files with 23 additions and 13 deletions
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36
hw/block/nand.c
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@ -663,7 +663,8 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s)
sector = SECTOR(s->addr);
off = (s->addr & PAGE_MASK) + s->offset;
soff = SECTOR_OFFSET(s->addr);
if (blk_read(s->blk, sector, iobuf, PAGE_SECTORS) < 0) {
if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
PAGE_SECTORS << BDRV_SECTOR_BITS) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
return;
}
@ -675,21 +676,24 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s)
MIN(OOB_SIZE, off + s->iolen - PAGE_SIZE));
}
if (blk_write(s->blk, sector, iobuf, PAGE_SECTORS) < 0) {
if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
PAGE_SECTORS << BDRV_SECTOR_BITS, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n", __func__, sector);
}
} else {
off = PAGE_START(s->addr) + (s->addr & PAGE_MASK) + s->offset;
sector = off >> 9;
soff = off & 0x1ff;
if (blk_read(s->blk, sector, iobuf, PAGE_SECTORS + 2) < 0) {
if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
(PAGE_SECTORS + 2) << BDRV_SECTOR_BITS) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
return;
}
mem_and(iobuf + soff, s->io, s->iolen);
if (blk_write(s->blk, sector, iobuf, PAGE_SECTORS + 2) < 0) {
if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
(PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n", __func__, sector);
}
}
@ -716,17 +720,20 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState *s)
i = SECTOR(addr);
page = SECTOR(addr + (1 << (ADDR_SHIFT + s->erase_shift)));
for (; i < page; i ++)
if (blk_write(s->blk, i, iobuf, 1) < 0) {
if (blk_pwrite(s->blk, i << BDRV_SECTOR_BITS, iobuf,
BDRV_SECTOR_SIZE, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n", __func__, i);
}
} else {
addr = PAGE_START(addr);
page = addr >> 9;
if (blk_read(s->blk, page, iobuf, 1) < 0) {
if (blk_pread(s->blk, page << BDRV_SECTOR_BITS, iobuf,
BDRV_SECTOR_SIZE) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, page);
}
memset(iobuf + (addr & 0x1ff), 0xff, (~addr & 0x1ff) + 1);
if (blk_write(s->blk, page, iobuf, 1) < 0) {
if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS, iobuf,
BDRV_SECTOR_SIZE, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n", __func__, page);
}
@ -734,18 +741,20 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState *s)
i = (addr & ~0x1ff) + 0x200;
for (addr += ((PAGE_SIZE + OOB_SIZE) << s->erase_shift) - 0x200;
i < addr; i += 0x200) {
if (blk_write(s->blk, i >> 9, iobuf, 1) < 0) {
if (blk_pwrite(s->blk, i, iobuf, BDRV_SECTOR_SIZE, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n",
__func__, i >> 9);
}
}
page = i >> 9;
if (blk_read(s->blk, page, iobuf, 1) < 0) {
if (blk_pread(s->blk, page << BDRV_SECTOR_BITS, iobuf,
BDRV_SECTOR_SIZE) < 0) {
printf("%s: read error in sector %" PRIu64 "\n", __func__, page);
}
memset(iobuf, 0xff, ((addr - 1) & 0x1ff) + 1);
if (blk_write(s->blk, page, iobuf, 1) < 0) {
if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS, iobuf,
BDRV_SECTOR_SIZE, 0) < 0) {
printf("%s: write error in sector %" PRIu64 "\n", __func__, page);
}
}
@ -760,7 +769,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s,
if (s->blk) {
if (s->mem_oob) {
if (blk_read(s->blk, SECTOR(addr), s->io, PAGE_SECTORS) < 0) {
if (blk_pread(s->blk, SECTOR(addr) << BDRV_SECTOR_BITS, s->io,
PAGE_SECTORS << BDRV_SECTOR_BITS) < 0) {
printf("%s: read error in sector %" PRIu64 "\n",
__func__, SECTOR(addr));
}
@ -769,8 +779,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s,
OOB_SIZE);
s->ioaddr = s->io + SECTOR_OFFSET(s->addr) + offset;
} else {
if (blk_read(s->blk, PAGE_START(addr) >> 9,
s->io, (PAGE_SECTORS + 2)) < 0) {
if (blk_pread(s->blk, PAGE_START(addr), s->io,
(PAGE_SECTORS + 2) << BDRV_SECTOR_BITS) < 0) {
printf("%s: read error in sector %" PRIu64 "\n",
__func__, PAGE_START(addr) >> 9);
}