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Diffstat (limited to 'fs/jffs2/wbuf.c')
-rw-r--r--fs/jffs2/wbuf.c230
1 files changed, 118 insertions, 112 deletions
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index c6a62e162963..1195d06d4373 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -955,158 +955,159 @@ exit:
return ret;
}
+#define NR_OOB_SCAN_PAGES 4
+
/*
- * Check, if the out of band area is empty
+ * Check, if the out of band area is empty
*/
-int jffs2_check_oob_empty( struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, int mode)
+int jffs2_check_oob_empty(struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb, int mode)
{
- unsigned char *buf;
- int ret = 0;
- int i,len,page;
- size_t retlen;
- int oob_size;
-
- /* allocate a buffer for all oob data in this sector */
- oob_size = c->mtd->oobsize;
- len = 4 * oob_size;
- buf = kmalloc(len, GFP_KERNEL);
- if (!buf) {
- printk(KERN_NOTICE "jffs2_check_oob_empty(): allocation of temporary data buffer for oob check failed\n");
- return -ENOMEM;
- }
- /*
- * if mode = 0, we scan for a total empty oob area, else we have
- * to take care of the cleanmarker in the first page of the block
- */
- ret = jffs2_flash_read_oob(c, jeb->offset, len , &retlen, buf);
+ int i, page, ret;
+ int oobsize = c->mtd->oobsize;
+ struct mtd_oob_ops ops;
+
+ ops.len = NR_OOB_SCAN_PAGES * oobsize;
+ ops.ooblen = oobsize;
+ ops.oobbuf = c->oobbuf;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
+
+ ret = c->mtd->read_oob(c->mtd, jeb->offset, &ops);
if (ret) {
- D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Read OOB failed %d for block at %08x\n", ret, jeb->offset));
- goto out;
+ D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Read OOB "
+ "failed %d for block at %08x\n", ret, jeb->offset));
+ return ret;
}
- if (retlen < len) {
- D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Read OOB return short read "
- "(%zd bytes not %d) for block at %08x\n", retlen, len, jeb->offset));
- ret = -EIO;
- goto out;
+ if (ops.retlen < ops.len) {
+ D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Read OOB "
+ "returned short read (%zd bytes not %d) for block "
+ "at %08x\n", ops.retlen, ops.len, jeb->offset));
+ return -EIO;
}
/* Special check for first page */
- for(i = 0; i < oob_size ; i++) {
+ for(i = 0; i < oobsize ; i++) {
/* Yeah, we know about the cleanmarker. */
if (mode && i >= c->fsdata_pos &&
i < c->fsdata_pos + c->fsdata_len)
continue;
- if (buf[i] != 0xFF) {
- D2(printk(KERN_DEBUG "Found %02x at %x in OOB for %08x\n",
- buf[i], i, jeb->offset));
- ret = 1;
- goto out;
+ if (ops.oobbuf[i] != 0xFF) {
+ D2(printk(KERN_DEBUG "Found %02x at %x in OOB for "
+ "%08x\n", ops.oobbuf[i], i, jeb->offset));
+ return 1;
}
}
/* we know, we are aligned :) */
- for (page = oob_size; page < len; page += sizeof(long)) {
- unsigned long dat = *(unsigned long *)(&buf[page]);
- if(dat != -1) {
- ret = 1;
- goto out;
- }
+ for (page = oobsize; page < ops.len; page += sizeof(long)) {
+ long dat = *(long *)(&ops.oobbuf[page]);
+ if(dat != -1)
+ return 1;
}
-
-out:
- kfree(buf);
-
- return ret;
+ return 0;
}
/*
-* Scan for a valid cleanmarker and for bad blocks
-* For virtual blocks (concatenated physical blocks) check the cleanmarker
-* only in the first page of the first physical block, but scan for bad blocks in all
-* physical blocks
-*/
-int jffs2_check_nand_cleanmarker (struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+ * Scan for a valid cleanmarker and for bad blocks
+ */
+int jffs2_check_nand_cleanmarker (struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb)
{
struct jffs2_unknown_node n;
- unsigned char buf[2 * NAND_MAX_OOBSIZE];
- unsigned char *p;
- int ret, i, cnt, retval = 0;
- size_t retlen, offset;
- int oob_size;
-
- offset = jeb->offset;
- oob_size = c->mtd->oobsize;
-
- /* Loop through the physical blocks */
- for (cnt = 0; cnt < (c->sector_size / c->mtd->erasesize); cnt++) {
- /* Check first if the block is bad. */
- if (c->mtd->block_isbad (c->mtd, offset)) {
- D1 (printk (KERN_WARNING "jffs2_check_nand_cleanmarker(): Bad block at %08x\n", jeb->offset));
- return 2;
- }
- /*
- * We read oob data from page 0 and 1 of the block.
- * page 0 contains cleanmarker and badblock info
- * page 1 contains failure count of this block
- */
- ret = c->mtd->read_oob (c->mtd, offset, oob_size << 1, &retlen, buf);
+ struct mtd_oob_ops ops;
+ int oobsize = c->mtd->oobsize;
+ unsigned char *p,*b;
+ int i, ret;
+ size_t offset = jeb->offset;
+
+ /* Check first if the block is bad. */
+ if (c->mtd->block_isbad(c->mtd, offset)) {
+ D1 (printk(KERN_WARNING "jffs2_check_nand_cleanmarker()"
+ ": Bad block at %08x\n", jeb->offset));
+ return 2;
+ }
- if (ret) {
- D1 (printk (KERN_WARNING "jffs2_check_nand_cleanmarker(): Read OOB failed %d for block at %08x\n", ret, jeb->offset));
- return ret;
- }
- if (retlen < (oob_size << 1)) {
- D1 (printk (KERN_WARNING "jffs2_check_nand_cleanmarker(): Read OOB return short read (%zd bytes not %d) for block at %08x\n", retlen, oob_size << 1, jeb->offset));
- return -EIO;
- }
+ ops.len = oobsize;
+ ops.ooblen = oobsize;
+ ops.oobbuf = c->oobbuf;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
- /* Check cleanmarker only on the first physical block */
- if (!cnt) {
- n.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
- n.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
- n.totlen = cpu_to_je32 (8);
- p = (unsigned char *) &n;
+ ret = c->mtd->read_oob(c->mtd, offset, &ops);
+ if (ret) {
+ D1 (printk(KERN_WARNING "jffs2_check_nand_cleanmarker(): "
+ "Read OOB failed %d for block at %08x\n",
+ ret, jeb->offset));
+ return ret;
+ }
- for (i = 0; i < c->fsdata_len; i++) {
- if (buf[c->fsdata_pos + i] != p[i]) {
- retval = 1;
- }
- }
- D1(if (retval == 1) {
- printk(KERN_WARNING "jffs2_check_nand_cleanmarker(): Cleanmarker node not detected in block at %08x\n", jeb->offset);
- printk(KERN_WARNING "OOB at %08zx was ", offset);
- for (i=0; i < oob_size; i++) {
- printk("%02x ", buf[i]);
- }
- printk("\n");
- })
- }
- offset += c->mtd->erasesize;
+ if (ops.retlen < ops.len) {
+ D1 (printk (KERN_WARNING "jffs2_check_nand_cleanmarker(): "
+ "Read OOB return short read (%zd bytes not %d) "
+ "for block at %08x\n", ops.retlen, ops.len,
+ jeb->offset));
+ return -EIO;
}
- return retval;
+
+ n.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
+ n.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
+ n.totlen = cpu_to_je32 (8);
+ p = (unsigned char *) &n;
+ b = c->oobbuf + c->fsdata_pos;
+
+ for (i = c->fsdata_len; i; i--) {
+ if (*b++ != *p++)
+ ret = 1;
+ }
+
+ D1(if (ret == 1) {
+ printk(KERN_WARNING "jffs2_check_nand_cleanmarker(): "
+ "Cleanmarker node not detected in block at %08x\n",
+ offset);
+ printk(KERN_WARNING "OOB at %08zx was ", offset);
+ for (i=0; i < oobsize; i++)
+ printk("%02x ", c->oobbuf[i]);
+ printk("\n");
+ });
+ return ret;
}
-int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c,
+ struct jffs2_eraseblock *jeb)
{
- struct jffs2_unknown_node n;
- int ret;
- size_t retlen;
+ struct jffs2_unknown_node n;
+ int ret;
+ struct mtd_oob_ops ops;
n.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
n.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
n.totlen = cpu_to_je32(8);
- ret = jffs2_flash_write_oob(c, jeb->offset + c->fsdata_pos, c->fsdata_len, &retlen, (unsigned char *)&n);
+ ops.len = c->fsdata_len;
+ ops.ooblen = c->fsdata_len;;
+ ops.oobbuf = (uint8_t *)&n;
+ ops.ooboffs = c->fsdata_pos;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
+
+ ret = c->mtd->write_oob(c->mtd, jeb->offset, &ops);
if (ret) {
- D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): Write failed for block at %08x: error %d\n", jeb->offset, ret));
+ D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): "
+ "Write failed for block at %08x: error %d\n",
+ jeb->offset, ret));
return ret;
}
- if (retlen != c->fsdata_len) {
- D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): Short write for block at %08x: %zd not %d\n", jeb->offset, retlen, c->fsdata_len));
- return ret;
+ if (ops.retlen != ops.len) {
+ D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): "
+ "Short write for block at %08x: %zd not %d\n",
+ jeb->offset, ops.retlen, ops.len));
+ return -EIO;
}
return 0;
}
@@ -1185,6 +1186,10 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
if (!c->wbuf)
return -ENOMEM;
+ c->oobbuf = kmalloc(NR_OOB_SCAN_PAGES * c->mtd->oobsize, GFP_KERNEL);
+ if (!c->oobbuf)
+ return -ENOMEM;
+
res = jffs2_nand_set_oobinfo(c);
#ifdef BREAKME
@@ -1202,6 +1207,7 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c)
void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c)
{
kfree(c->wbuf);
+ kfree(c->oobbuf);
}
int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 21:52:55 +0000