-/*
+/*
* inftlmount.c -- INFTL mount code with extensive checks.
*
* Author: Greg Ungerer (gerg@snapgear.com)
* (C) Copyright 2002-2003, Greg Ungerer (gerg@snapgear.com)
*
* Based heavily on the nftlmount.c code which is:
- * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
+ * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
* Copyright (C) 2000 Netgem S.A.
*
- * $Id: inftlmount.c,v 1.11 2003/06/23 07:39:21 dwmw2 Exp $
+ * $Id: inftlmount.c,v 1.18 2005/11/07 11:14:20 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <linux/mtd/inftl.h>
#include <linux/mtd/compatmac.h>
-char inftlmountrev[]="$Revision: 1.11 $";
+char inftlmountrev[]="$Revision: 1.18 $";
/*
* find_boot_record: Find the INFTL Media Header and its Spare copy which
{
struct inftl_unittail h1;
//struct inftl_oob oob;
- unsigned int i, block, boot_record_count = 0;
+ unsigned int i, block;
u8 buf[SECTORSIZE];
struct INFTLMediaHeader *mh = &inftl->MediaHdr;
struct INFTLPartition *ip;
- int retlen;
+ size_t retlen;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: find_boot_record(inftl=0x%x)\n",
- (int)inftl);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: find_boot_record(inftl=%p)\n", inftl);
/*
* Assume logical EraseSize == physical erasesize for starting the
inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
inftl->MediaUnit = BLOCK_NIL;
- inftl->SpareMediaUnit = BLOCK_NIL;
/* Search for a valid boot record */
for (block = 0; block < inftl->nb_blocks; block++) {
* Check for BNAND header first. Then whinge if it's found
* but later checks fail.
*/
- if ((ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize,
- SECTORSIZE, &retlen, buf))) {
+ ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize,
+ SECTORSIZE, &retlen, buf);
+ /* We ignore ret in case the ECC of the MediaHeader is invalid
+ (which is apparently acceptable) */
+ if (retlen != SECTORSIZE) {
static int warncount = 5;
if (warncount) {
continue;
}
- if (boot_record_count) {
- /*
- * We've already processed one. So we just check if
- * this one is the same as the first one we found.
- */
- if (memcmp(mh, buf, sizeof(struct INFTLMediaHeader))) {
- printk(KERN_WARNING "INFTL: Media Headers at "
- "0x%x and 0x%x disagree.\n",
- inftl->MediaUnit * inftl->EraseSize,
- block * inftl->EraseSize);
- return -1;
- }
- if (boot_record_count == 1)
- inftl->SpareMediaUnit = block;
-
- /*
- * Mark this boot record (INFTL MediaHeader) block as
- * reserved.
- */
- inftl->PUtable[block] = BLOCK_RESERVED;
-
- boot_record_count++;
- continue;
- }
/*
* This is the first we've seen.
* Copy the media header structure into place.
*/
memcpy(mh, buf, sizeof(struct INFTLMediaHeader));
+
+ /* Read the spare media header at offset 4096 */
+ MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize + 4096,
+ SECTORSIZE, &retlen, buf);
+ if (retlen != SECTORSIZE) {
+ printk(KERN_WARNING "INFTL: Unable to read spare "
+ "Media Header\n");
+ return -1;
+ }
+ /* Check if this one is the same as the first one we found. */
+ if (memcmp(mh, buf, sizeof(struct INFTLMediaHeader))) {
+ printk(KERN_WARNING "INFTL: Primary and spare Media "
+ "Headers disagree.\n");
+ return -1;
+ }
+
mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
mh->NoOfBDTLPartitions = le32_to_cpu(mh->NoOfBDTLPartitions);
"UnitSizeFactor 0x%02x is experimental\n",
mh->BlockMultiplierBits);
inftl->EraseSize = inftl->mbd.mtd->erasesize <<
- (0xff - mh->BlockMultiplierBits);
+ mh->BlockMultiplierBits;
inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+ block >>= mh->BlockMultiplierBits;
}
/* Scan the partitions */
if (ip->Reserved0 != ip->firstUnit) {
struct erase_info *instr = &inftl->instr;
+ instr->mtd = inftl->mbd.mtd;
+
/*
* Most likely this is using the
* undocumented qiuck mount feature.
inftl->nb_boot_blocks);
return -1;
}
-
+
inftl->mbd.size = inftl->numvunits *
(inftl->EraseSize / SECTORSIZE);
inftl->PUtable = kmalloc(inftl->nb_blocks * sizeof(u16), GFP_KERNEL);
if (!inftl->PUtable) {
printk(KERN_WARNING "INFTL: allocation of PUtable "
- "failed (%d bytes)\n",
+ "failed (%zd bytes)\n",
inftl->nb_blocks * sizeof(u16));
return -ENOMEM;
}
if (!inftl->VUtable) {
kfree(inftl->PUtable);
printk(KERN_WARNING "INFTL: allocation of VUtable "
- "failed (%d bytes)\n",
+ "failed (%zd bytes)\n",
inftl->nb_blocks * sizeof(u16));
return -ENOMEM;
}
-
+
/* Mark the blocks before INFTL MediaHeader as reserved */
for (i = 0; i < inftl->nb_boot_blocks; i++)
inftl->PUtable[i] = BLOCK_RESERVED;
/* Mark this boot record (NFTL MediaHeader) block as reserved */
inftl->PUtable[block] = BLOCK_RESERVED;
-#if 0
/* Read Bad Erase Unit Table and modify PUtable[] accordingly */
for (i = 0; i < inftl->nb_blocks; i++) {
- if ((i & (SECTORSIZE - 1)) == 0) {
- /* read one sector for every SECTORSIZE of blocks */
- if ((ret = MTD_READECC(inftl->mbd.mtd,
- block * inftl->EraseSize + i + SECTORSIZE,
- SECTORSIZE, &retlen, buf,
- (char *)&oob, NULL)) < 0) {
- printk(KERN_WARNING "INFTL: read of "
- "bad sector table failed "
- "(err %d)\n", ret);
- kfree(inftl->VUtable);
- kfree(inftl->PUtable);
- return -1;
- }
+ int physblock;
+ /* If any of the physical eraseblocks are bad, don't
+ use the unit. */
+ for (physblock = 0; physblock < inftl->EraseSize; physblock += inftl->mbd.mtd->erasesize) {
+ if (inftl->mbd.mtd->block_isbad(inftl->mbd.mtd, i * inftl->EraseSize + physblock))
+ inftl->PUtable[i] = BLOCK_RESERVED;
}
- /* Mark the Bad Erase Unit as RESERVED in PUtable */
- if (buf[i & (SECTORSIZE - 1)] != 0xff)
- inftl->PUtable[i] = BLOCK_RESERVED;
}
-#endif
inftl->MediaUnit = block;
- boot_record_count++;
+ return 0;
}
-
- return boot_record_count ? 0 : -1;
+
+ /* Not found. */
+ return -1;
}
static int memcmpb(void *a, int c, int n)
static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address,
int len, int check_oob)
{
- int i, retlen;
- u8 buf[SECTORSIZE];
+ u8 buf[SECTORSIZE + inftl->mbd.mtd->oobsize];
+ size_t retlen;
+ int i;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: check_free_sectors(inftl=0x%x,"
- "address=0x%x,len=%d,check_oob=%d)\n", (int)inftl,
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: check_free_sectors(inftl=%p,"
+ "address=0x%x,len=%d,check_oob=%d)\n", inftl,
address, len, check_oob);
for (i = 0; i < len; i += SECTORSIZE) {
- /*
- * We want to read the sector without ECC check here since a
- * free sector does not have ECC syndrome on it yet.
- */
- if (MTD_READ(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf) < 0)
+ if (MTD_READECC(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &inftl->oobinfo) < 0)
return -1;
if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
return -1;
if (check_oob) {
- if (MTD_READOOB(inftl->mbd.mtd, address,
- inftl->mbd.mtd->oobsize, &retlen, buf) < 0)
- return -1;
- if (memcmpb(buf, 0xff, inftl->mbd.mtd->oobsize) != 0)
+ if (memcmpb(buf + SECTORSIZE, 0xff, inftl->mbd.mtd->oobsize) != 0)
return -1;
}
address += SECTORSIZE;
*
* Return: 0 when succeed, -1 on error.
*
- * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
- * 2. UnitSizeFactor != 0xFF
+ * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
*/
int INFTL_formatblock(struct INFTLrecord *inftl, int block)
{
- int retlen;
+ size_t retlen;
struct inftl_unittail uci;
struct erase_info *instr = &inftl->instr;
+ int physblock;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=0x%x,"
- "block=%d)\n", (int)inftl, block);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=%p,"
+ "block=%d)\n", inftl, block);
memset(instr, 0, sizeof(struct erase_info));
+ /* FIXME: Shouldn't we be setting the 'discarded' flag to zero
+ _first_? */
+
/* Use async erase interface, test return code */
+ instr->mtd = inftl->mbd.mtd;
instr->addr = block * inftl->EraseSize;
- instr->len = inftl->EraseSize;
- MTD_ERASE(inftl->mbd.mtd, instr);
+ instr->len = inftl->mbd.mtd->erasesize;
+ /* Erase one physical eraseblock at a time, even though the NAND api
+ allows us to group them. This way we if we have a failure, we can
+ mark only the failed block in the bbt. */
+ for (physblock = 0; physblock < inftl->EraseSize; physblock += instr->len, instr->addr += instr->len) {
+ MTD_ERASE(inftl->mbd.mtd, instr);
+
+ if (instr->state == MTD_ERASE_FAILED) {
+ printk(KERN_WARNING "INFTL: error while formatting block %d\n",
+ block);
+ goto fail;
+ }
- if (instr->state == MTD_ERASE_FAILED) {
/*
- * Could not format, FixMe: We should update the BadUnitTable
- * both in memory and on disk.
- */
- printk(KERN_WARNING "INFTL: error while formatting block %d\n",
- block);
- return -1;
+ * Check the "freeness" of Erase Unit before updating metadata.
+ * FixMe: is this check really necessary? Since we have check the
+ * return code after the erase operation.
+ */
+ if (check_free_sectors(inftl, instr->addr, instr->len, 1) != 0)
+ goto fail;
}
- /*
- * Check the "freeness" of Erase Unit before updating metadata.
- * FixMe: is this check really necessary? Since we have check the
- * return code after the erase operation.
- */
- if (check_free_sectors(inftl, instr->addr, inftl->EraseSize, 1) != 0)
- return -1;
-
uci.EraseMark = cpu_to_le16(ERASE_MARK);
uci.EraseMark1 = cpu_to_le16(ERASE_MARK);
uci.Reserved[0] = 0;
uci.Reserved[1] = 0;
uci.Reserved[2] = 0;
uci.Reserved[3] = 0;
- if (MTD_WRITEOOB(inftl->mbd.mtd, block * inftl->EraseSize + SECTORSIZE * 2 +
+ instr->addr = block * inftl->EraseSize + SECTORSIZE * 2;
+ if (MTD_WRITEOOB(inftl->mbd.mtd, instr->addr +
8, 8, &retlen, (char *)&uci) < 0)
- return -1;
+ goto fail;
return 0;
+fail:
+ /* could not format, update the bad block table (caller is responsible
+ for setting the PUtable to BLOCK_RESERVED on failure) */
+ inftl->mbd.mtd->block_markbad(inftl->mbd.mtd, instr->addr);
+ return -1;
}
/*
if (INFTL_formatblock(inftl, block) < 0) {
/*
* Cannot format !!!! Mark it as Bad Unit,
- * FixMe: update the BadUnitTable on disk.
*/
inftl->PUtable[block] = BLOCK_RESERVED;
} else {
int chain_length, do_format_chain;
struct inftl_unithead1 h0;
struct inftl_unittail h1;
- int i, retlen;
+ size_t retlen;
+ int i;
u8 *ANACtable, ANAC;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_mount(inftl=0x%x)\n", (int)s);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_mount(inftl=%p)\n", s);
/* Search for INFTL MediaHeader and Spare INFTL Media Header */
if (find_boot_record(s) < 0) {
printk(KERN_WARNING "INFTL: could not find valid boot record?\n");
- return -1;
+ return -ENXIO;
}
/* Init the logical to physical table */
/* Temporary buffer to store ANAC numbers. */
ANACtable = kmalloc(s->nb_blocks * sizeof(u8), GFP_KERNEL);
+ if (!ANACtable) {
+ printk(KERN_WARNING "INFTL: allocation of ANACtable "
+ "failed (%zd bytes)\n",
+ s->nb_blocks * sizeof(u8));
+ return -ENOMEM;
+ }
memset(ANACtable, 0, s->nb_blocks);
/*
for (chain_length = 0; ; chain_length++) {
- if ((chain_length == 0) &&
+ if ((chain_length == 0) &&
(s->PUtable[block] != BLOCK_NOTEXPLORED)) {
/* Nothing to do here, onto next block */
break;
"in virtual chain %d\n",
s->PUtable[block], logical_block);
s->PUtable[block] = BLOCK_NIL;
-
+
}
if (ANACtable[block] != ANAC) {
/*
git://git.onelab.eu / linux-2.6.git / blobdiff