summaryrefslogtreecommitdiff
path: root/drivers/mtd/ubi/eba.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/ubi/eba.c')
-rw-r--r--drivers/mtd/ubi/eba.c173
1 files changed, 123 insertions, 50 deletions
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index fce0ff8bdf..6a78f672cd 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -333,9 +333,9 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum);
- down_read(&ubi->fm_sem);
+ down_read(&ubi->fm_eba_sem);
vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED;
- up_read(&ubi->fm_sem);
+ up_read(&ubi->fm_eba_sem);
err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0);
out_unlock:
@@ -415,11 +415,13 @@ retry:
*/
if (err == UBI_IO_BAD_HDR_EBADMSG ||
err == UBI_IO_BAD_HDR) {
- ubi_warn("corrupted VID header at PEB %d, LEB %d:%d",
+ ubi_warn(ubi, "corrupted VID header at PEB %d, LEB %d:%d",
pnum, vol_id, lnum);
err = -EBADMSG;
- } else
+ } else {
+ err = -EINVAL;
ubi_ro_mode(ubi);
+ }
}
goto out_free;
} else if (err == UBI_IO_BITFLIPS)
@@ -434,15 +436,14 @@ retry:
err = ubi_io_read_data(ubi, buf, pnum, offset, len);
if (err) {
- if (err == UBI_IO_BITFLIPS) {
+ if (err == UBI_IO_BITFLIPS)
scrub = 1;
- err = 0;
- } else if (mtd_is_eccerr(err)) {
+ else if (mtd_is_eccerr(err)) {
if (vol->vol_type == UBI_DYNAMIC_VOLUME)
goto out_unlock;
scrub = 1;
if (!check) {
- ubi_msg("force data checking");
+ ubi_msg(ubi, "force data checking");
check = 1;
goto retry;
}
@@ -453,7 +454,7 @@ retry:
if (check) {
uint32_t crc1 = crc32(UBI_CRC32_INIT, buf, len);
if (crc1 != crc) {
- ubi_warn("CRC error: calculated %#08x, must be %#08x",
+ ubi_warn(ubi, "CRC error: calculated %#08x, must be %#08x",
crc1, crc);
err = -EBADMSG;
goto out_unlock;
@@ -473,6 +474,63 @@ out_unlock:
return err;
}
+#ifndef __UBOOT__
+/**
+ * ubi_eba_read_leb_sg - read data into a scatter gather list.
+ * @ubi: UBI device description object
+ * @vol: volume description object
+ * @lnum: logical eraseblock number
+ * @sgl: UBI scatter gather list to store the read data
+ * @offset: offset from where to read
+ * @len: how many bytes to read
+ * @check: data CRC check flag
+ *
+ * This function works exactly like ubi_eba_read_leb(). But instead of
+ * storing the read data into a buffer it writes to an UBI scatter gather
+ * list.
+ */
+int ubi_eba_read_leb_sg(struct ubi_device *ubi, struct ubi_volume *vol,
+ struct ubi_sgl *sgl, int lnum, int offset, int len,
+ int check)
+{
+ int to_read;
+ int ret;
+ struct scatterlist *sg;
+
+ for (;;) {
+ ubi_assert(sgl->list_pos < UBI_MAX_SG_COUNT);
+ sg = &sgl->sg[sgl->list_pos];
+ if (len < sg->length - sgl->page_pos)
+ to_read = len;
+ else
+ to_read = sg->length - sgl->page_pos;
+
+ ret = ubi_eba_read_leb(ubi, vol, lnum,
+ sg_virt(sg) + sgl->page_pos, offset,
+ to_read, check);
+ if (ret < 0)
+ return ret;
+
+ offset += to_read;
+ len -= to_read;
+ if (!len) {
+ sgl->page_pos += to_read;
+ if (sgl->page_pos == sg->length) {
+ sgl->list_pos++;
+ sgl->page_pos = 0;
+ }
+
+ break;
+ }
+
+ sgl->list_pos++;
+ sgl->page_pos = 0;
+ }
+
+ return ret;
+}
+#endif
+
/**
* recover_peb - recover from write failure.
* @ubi: UBI device description object
@@ -504,22 +562,27 @@ retry:
new_pnum = ubi_wl_get_peb(ubi);
if (new_pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
+ up_read(&ubi->fm_eba_sem);
return new_pnum;
}
- ubi_msg("recover PEB %d, move data to PEB %d", pnum, new_pnum);
+ ubi_msg(ubi, "recover PEB %d, move data to PEB %d",
+ pnum, new_pnum);
err = ubi_io_read_vid_hdr(ubi, pnum, vid_hdr, 1);
if (err && err != UBI_IO_BITFLIPS) {
if (err > 0)
err = -EIO;
+ up_read(&ubi->fm_eba_sem);
goto out_put;
}
vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
err = ubi_io_write_vid_hdr(ubi, new_pnum, vid_hdr);
- if (err)
+ if (err) {
+ up_read(&ubi->fm_eba_sem);
goto write_error;
+ }
data_size = offset + len;
mutex_lock(&ubi->buf_mutex);
@@ -528,8 +591,10 @@ retry:
/* Read everything before the area where the write failure happened */
if (offset > 0) {
err = ubi_io_read_data(ubi, ubi->peb_buf, pnum, 0, offset);
- if (err && err != UBI_IO_BITFLIPS)
+ if (err && err != UBI_IO_BITFLIPS) {
+ up_read(&ubi->fm_eba_sem);
goto out_unlock;
+ }
}
memcpy(ubi->peb_buf + offset, buf, len);
@@ -537,18 +602,18 @@ retry:
err = ubi_io_write_data(ubi, ubi->peb_buf, new_pnum, 0, data_size);
if (err) {
mutex_unlock(&ubi->buf_mutex);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
mutex_unlock(&ubi->buf_mutex);
ubi_free_vid_hdr(ubi, vid_hdr);
- down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = new_pnum;
- up_read(&ubi->fm_sem);
+ up_read(&ubi->fm_eba_sem);
ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
- ubi_msg("data was successfully recovered");
+ ubi_msg(ubi, "data was successfully recovered");
return 0;
out_unlock:
@@ -563,13 +628,13 @@ write_error:
* Bad luck? This physical eraseblock is bad too? Crud. Let's try to
* get another one.
*/
- ubi_warn("failed to write to PEB %d", new_pnum);
+ ubi_warn(ubi, "failed to write to PEB %d", new_pnum);
ubi_wl_put_peb(ubi, vol_id, lnum, new_pnum, 1);
if (++tries > UBI_IO_RETRIES) {
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
}
- ubi_msg("try again");
+ ubi_msg(ubi, "try again");
goto retry;
}
@@ -607,7 +672,7 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
err = ubi_io_write_data(ubi, buf, pnum, offset, len);
if (err) {
- ubi_warn("failed to write data to PEB %d", pnum);
+ ubi_warn(ubi, "failed to write data to PEB %d", pnum);
if (err == -EIO && ubi->bad_allowed)
err = recover_peb(ubi, pnum, vol_id, lnum, buf,
offset, len);
@@ -640,6 +705,7 @@ retry:
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
+ up_read(&ubi->fm_eba_sem);
return pnum;
}
@@ -648,23 +714,24 @@ retry:
err = ubi_io_write_vid_hdr(ubi, pnum, vid_hdr);
if (err) {
- ubi_warn("failed to write VID header to LEB %d:%d, PEB %d",
+ ubi_warn(ubi, "failed to write VID header to LEB %d:%d, PEB %d",
vol_id, lnum, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
if (len) {
err = ubi_io_write_data(ubi, buf, pnum, offset, len);
if (err) {
- ubi_warn("failed to write %d bytes at offset %d of LEB %d:%d, PEB %d",
+ ubi_warn(ubi, "failed to write %d bytes at offset %d of LEB %d:%d, PEB %d",
len, offset, vol_id, lnum, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
}
- down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum;
- up_read(&ubi->fm_sem);
+ up_read(&ubi->fm_eba_sem);
leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -692,7 +759,7 @@ write_error:
}
vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
- ubi_msg("try another PEB");
+ ubi_msg(ubi, "try another PEB");
goto retry;
}
@@ -761,6 +828,7 @@ retry:
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
+ up_read(&ubi->fm_eba_sem);
return pnum;
}
@@ -769,22 +837,23 @@ retry:
err = ubi_io_write_vid_hdr(ubi, pnum, vid_hdr);
if (err) {
- ubi_warn("failed to write VID header to LEB %d:%d, PEB %d",
+ ubi_warn(ubi, "failed to write VID header to LEB %d:%d, PEB %d",
vol_id, lnum, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
err = ubi_io_write_data(ubi, buf, pnum, 0, len);
if (err) {
- ubi_warn("failed to write %d bytes of data to PEB %d",
+ ubi_warn(ubi, "failed to write %d bytes of data to PEB %d",
len, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
ubi_assert(vol->eba_tbl[lnum] < 0);
- down_read(&ubi->fm_sem);
vol->eba_tbl[lnum] = pnum;
- up_read(&ubi->fm_sem);
+ up_read(&ubi->fm_eba_sem);
leb_write_unlock(ubi, vol_id, lnum);
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -812,7 +881,7 @@ write_error:
}
vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
- ubi_msg("try another PEB");
+ ubi_msg(ubi, "try another PEB");
goto retry;
}
@@ -836,7 +905,7 @@ write_error:
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum, const void *buf, int len)
{
- int err, pnum, tries = 0, vol_id = vol->vol_id;
+ int err, pnum, old_pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
@@ -879,6 +948,7 @@ retry:
pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
err = pnum;
+ up_read(&ubi->fm_eba_sem);
goto out_leb_unlock;
}
@@ -887,28 +957,30 @@ retry:
err = ubi_io_write_vid_hdr(ubi, pnum, vid_hdr);
if (err) {
- ubi_warn("failed to write VID header to LEB %d:%d, PEB %d",
+ ubi_warn(ubi, "failed to write VID header to LEB %d:%d, PEB %d",
vol_id, lnum, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
err = ubi_io_write_data(ubi, buf, pnum, 0, len);
if (err) {
- ubi_warn("failed to write %d bytes of data to PEB %d",
+ ubi_warn(ubi, "failed to write %d bytes of data to PEB %d",
len, pnum);
+ up_read(&ubi->fm_eba_sem);
goto write_error;
}
- if (vol->eba_tbl[lnum] >= 0) {
- err = ubi_wl_put_peb(ubi, vol_id, lnum, vol->eba_tbl[lnum], 0);
+ old_pnum = vol->eba_tbl[lnum];
+ vol->eba_tbl[lnum] = pnum;
+ up_read(&ubi->fm_eba_sem);
+
+ if (old_pnum >= 0) {
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, old_pnum, 0);
if (err)
goto out_leb_unlock;
}
- down_read(&ubi->fm_sem);
- vol->eba_tbl[lnum] = pnum;
- up_read(&ubi->fm_sem);
-
out_leb_unlock:
leb_write_unlock(ubi, vol_id, lnum);
out_mutex:
@@ -934,7 +1006,7 @@ write_error:
}
vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi));
- ubi_msg("try another PEB");
+ ubi_msg(ubi, "try another PEB");
goto retry;
}
@@ -1057,7 +1129,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
dbg_wl("read %d bytes of data", aldata_size);
err = ubi_io_read_data(ubi, ubi->peb_buf, from, 0, aldata_size);
if (err && err != UBI_IO_BITFLIPS) {
- ubi_warn("error %d while reading data from PEB %d",
+ ubi_warn(ubi, "error %d while reading data from PEB %d",
err, from);
err = MOVE_SOURCE_RD_ERR;
goto out_unlock_buf;
@@ -1107,7 +1179,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
err = ubi_io_read_vid_hdr(ubi, to, vid_hdr, 1);
if (err) {
if (err != UBI_IO_BITFLIPS) {
- ubi_warn("error %d while reading VID header back from PEB %d",
+ ubi_warn(ubi, "error %d while reading VID header back from PEB %d",
err, to);
if (is_error_sane(err))
err = MOVE_TARGET_RD_ERR;
@@ -1134,7 +1206,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
err = ubi_io_read_data(ubi, ubi->peb_buf, to, 0, aldata_size);
if (err) {
if (err != UBI_IO_BITFLIPS) {
- ubi_warn("error %d while reading data back from PEB %d",
+ ubi_warn(ubi, "error %d while reading data back from PEB %d",
err, to);
if (is_error_sane(err))
err = MOVE_TARGET_RD_ERR;
@@ -1146,7 +1218,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
cond_resched();
if (crc != crc32(UBI_CRC32_INIT, ubi->peb_buf, data_size)) {
- ubi_warn("read data back from PEB %d and it is different",
+ ubi_warn(ubi, "read data back from PEB %d and it is different",
to);
err = -EINVAL;
goto out_unlock_buf;
@@ -1154,9 +1226,9 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
}
ubi_assert(vol->eba_tbl[lnum] == from);
- down_read(&ubi->fm_sem);
+ down_read(&ubi->fm_eba_sem);
vol->eba_tbl[lnum] = to;
- up_read(&ubi->fm_sem);
+ up_read(&ubi->fm_eba_sem);
out_unlock_buf:
mutex_unlock(&ubi->buf_mutex);
@@ -1199,10 +1271,10 @@ static void print_rsvd_warning(struct ubi_device *ubi,
return;
}
- ubi_warn("cannot reserve enough PEBs for bad PEB handling, reserved %d, need %d",
+ ubi_warn(ubi, "cannot reserve enough PEBs for bad PEB handling, reserved %d, need %d",
ubi->beb_rsvd_pebs, ubi->beb_rsvd_level);
if (ubi->corr_peb_count)
- ubi_warn("%d PEBs are corrupted and not used",
+ ubi_warn(ubi, "%d PEBs are corrupted and not used",
ubi->corr_peb_count);
}
@@ -1280,7 +1352,7 @@ int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap,
fm_eba[i][j] == UBI_LEB_UNMAPPED)
continue;
- ubi_err("LEB:%i:%i is PEB:%i instead of %i!",
+ ubi_err(ubi, "LEB:%i:%i is PEB:%i instead of %i!",
vol->vol_id, i, fm_eba[i][j],
scan_eba[i][j]);
ubi_assert(0);
@@ -1355,15 +1427,16 @@ int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
* during re-size.
*/
ubi_move_aeb_to_list(av, aeb, &ai->erase);
- vol->eba_tbl[aeb->lnum] = aeb->pnum;
+ else
+ vol->eba_tbl[aeb->lnum] = aeb->pnum;
}
}
if (ubi->avail_pebs < EBA_RESERVED_PEBS) {
- ubi_err("no enough physical eraseblocks (%d, need %d)",
+ ubi_err(ubi, "no enough physical eraseblocks (%d, need %d)",
ubi->avail_pebs, EBA_RESERVED_PEBS);
if (ubi->corr_peb_count)
- ubi_err("%d PEBs are corrupted and not used",
+ ubi_err(ubi, "%d PEBs are corrupted and not used",
ubi->corr_peb_count);
err = -ENOSPC;
goto out_free;
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-25 00:04:45 +0000