/* Do the read... */
ret = c->mtd->read(c->mtd, start, c->wbuf_ofs - start, &retlen, buf);
- if (ret == -EBADMSG && retlen == c->wbuf_ofs - start) {
- /* ECC recovered */
+ /* ECC recovered ? */
+ if ((ret == -EUCLEAN || ret == -EBADMSG) &&
+ (retlen == c->wbuf_ofs - start))
ret = 0;
- }
+
if (ret || retlen != c->wbuf_ofs - start) {
printk(KERN_CRIT "Old data are already lost in wbuf recovery. Data loss ensues.\n");
down_read(&c->wbuf_sem);
ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
- if ( (ret == -EBADMSG) && (*retlen == len) ) {
- printk(KERN_WARNING "mtd->read(0x%zx bytes from 0x%llx) returned ECC error\n",
- len, ofs);
+ if ( (ret == -EBADMSG || ret == -EUCLEAN) && (*retlen == len) ) {
+ if (ret == -EBADMSG)
+ printk(KERN_WARNING "mtd->read(0x%zx bytes from 0x%llx)"
+ " returned ECC error\n", len, ofs);
/*
- * We have the raw data without ECC correction in the buffer, maybe
- * we are lucky and all data or parts are correct. We check the node.
- * If data are corrupted node check will sort it out.
- * We keep this block, it will fail on write or erase and the we
- * mark it bad. Or should we do that now? But we should give him a chance.
- * Maybe we had a system crash or power loss before the ecc write or
- * a erase was completed.
+ * We have the raw data without ECC correction in the buffer,
+ * maybe we are lucky and all data or parts are correct. We
+ * check the node. If data are corrupted node check will sort
+ * it out. We keep this block, it will fail on write or erase
+ * and the we mark it bad. Or should we do that now? But we
+ * should give him a chance. Maybe we had a system crash or
+ * power loss before the ecc write or a erase was completed.
* So we return success. :)
*/
- ret = 0;
+ ret = 0;
}
/* if no writebuffer available or write buffer empty, return */
orbf = (c->wbuf_ofs - ofs); /* offset in read buffer */
if (orbf > len) /* is write beyond write buffer ? */
goto exit;
- lwbf = len - orbf; /* number of bytes to copy */
+ lwbf = len - orbf; /* number of bytes to copy */
if (lwbf > c->wbuf_len)
lwbf = c->wbuf_len;
}
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;
}
return 1;
}
-#define NAND_JFFS2_OOB16_FSDALEN 8
-
-static struct nand_oobinfo jffs2_oobinfo_docecc = {
- .useecc = MTD_NANDECC_PLACE,
- .eccbytes = 6,
- .eccpos = {0,1,2,3,4,5}
-};
-
-
static int jffs2_nand_set_oobinfo(struct jffs2_sb_info *c)
{
- struct nand_oobinfo *oinfo = c->mtd->oobinfo;
+ struct nand_ecclayout *oinfo = c->mtd->ecclayout;
/* Do this only, if we have an oob buffer */
if (!c->mtd->oobsize)
c->cleanmarker_size = 0;
/* Should we use autoplacement ? */
- if (oinfo && oinfo->useecc == MTD_NANDECC_AUTOPLACE) {
- D1(printk(KERN_DEBUG "JFFS2 using autoplace on NAND\n"));
- /* Get the position of the free bytes */
- if (!oinfo->oobfree[0][1]) {
- printk (KERN_WARNING "jffs2_nand_set_oobinfo(): Eeep. Autoplacement selected and no empty space in oob\n");
- return -ENOSPC;
- }
- c->fsdata_pos = oinfo->oobfree[0][0];
- c->fsdata_len = oinfo->oobfree[0][1];
- if (c->fsdata_len > 8)
- c->fsdata_len = 8;
- } else {
- /* This is just a legacy fallback and should go away soon */
- switch(c->mtd->ecctype) {
- case MTD_ECC_RS_DiskOnChip:
- printk(KERN_WARNING "JFFS2 using DiskOnChip hardware ECC without autoplacement. Fix it!\n");
- c->oobinfo = &jffs2_oobinfo_docecc;
- c->fsdata_pos = 6;
- c->fsdata_len = NAND_JFFS2_OOB16_FSDALEN;
- c->badblock_pos = 15;
- break;
+ if (!oinfo) {
+ D1(printk(KERN_DEBUG "JFFS2 on NAND. No autoplacment info found\n"));
+ return -EINVAL;
+ }
- default:
- D1(printk(KERN_DEBUG "JFFS2 on NAND. No autoplacment info found\n"));
- return -EINVAL;
- }
+ D1(printk(KERN_DEBUG "JFFS2 using autoplace on NAND\n"));
+ /* Get the position of the free bytes */
+ if (!oinfo->oobfree[0].length) {
+ printk (KERN_WARNING "jffs2_nand_set_oobinfo(): Eeep."
+ " Autoplacement selected and no empty space in oob\n");
+ return -ENOSPC;
}
+ c->fsdata_pos = oinfo->oobfree[0].offset;
+ c->fsdata_len = oinfo->oobfree[0].length;
+ if (c->fsdata_len > 8)
+ c->fsdata_len = 8;
+
return 0;
}
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
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) {
projects / linux-2.6 / blobdiff