-/*
+/*
* inftlcore.c -- Linux driver for Inverse Flash Translation Layer (INFTL)
*
* (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
* (c) 1999 Machine Vision Holdings, Inc.
* Author: David Woodhouse <dwmw2@infradead.org>
*
- * $Id: inftlcore.c,v 1.14 2003/06/26 08:28:26 dwmw2 Exp $
+ * $Id: inftlcore.c,v 1.19 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
*/
#define MAX_LOOPS 10000
-extern void INFTL_dumptables(struct INFTLrecord *inftl);
-extern void INFTL_dumpVUchains(struct INFTLrecord *inftl);
-
static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
{
struct INFTLrecord *inftl;
unsigned long temp;
- if (mtd->ecctype != MTD_ECC_RS_DiskOnChip)
+ if (mtd->type != MTD_NANDFLASH)
+ return;
+ /* OK, this is moderately ugly. But probably safe. Alternatives? */
+ if (memcmp(mtd->name, "DiskOnChip", 10))
+ return;
+
+ if (!mtd->block_isbad) {
+ printk(KERN_ERR
+"INFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
+"Please use the new diskonchip driver under the NAND subsystem.\n");
return;
+ }
DEBUG(MTD_DEBUG_LEVEL3, "INFTL: add_mtd for %s\n", mtd->name);
inftl->mbd.devnum = -1;
inftl->mbd.blksize = 512;
inftl->mbd.tr = tr;
+ memcpy(&inftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
+ inftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
if (INFTL_mount(inftl) < 0) {
printk(KERN_WARNING "INFTL: could not mount device\n");
if (inftl->mbd.size != inftl->heads * inftl->cylinders * inftl->sectors) {
/*
- Oh no we don't have
+ Oh no we don't have
mbd.size == heads * cylinders * sectors
*/
printk(KERN_WARNING "INFTL: cannot calculate a geometry to "
"match size of 0x%lx.\n", inftl->mbd.size);
printk(KERN_WARNING "INFTL: using C:%d H:%d S:%d "
"(== 0x%lx sects)\n",
- inftl->cylinders, inftl->heads , inftl->sectors,
+ inftl->cylinders, inftl->heads , inftl->sectors,
(long)inftl->cylinders * (long)inftl->heads *
(long)inftl->sectors );
}
if (add_mtd_blktrans_dev(&inftl->mbd)) {
- if (inftl->PUtable)
- kfree(inftl->PUtable);
- if (inftl->VUtable)
- kfree(inftl->VUtable);
+ kfree(inftl->PUtable);
+ kfree(inftl->VUtable);
kfree(inftl);
return;
}
#ifdef PSYCHO_DEBUG
- printk(KERN_INFO "INFTL: Found new nftl%c\n", nftl->mbd.devnum + 'a');
+ printk(KERN_INFO "INFTL: Found new inftl%c\n", inftl->mbd.devnum + 'a');
#endif
return;
}
del_mtd_blktrans_dev(dev);
- if (inftl->PUtable)
- kfree(inftl->PUtable);
- if (inftl->VUtable)
- kfree(inftl->VUtable);
+ kfree(inftl->PUtable);
+ kfree(inftl->VUtable);
kfree(inftl);
}
u16 pot = inftl->LastFreeEUN;
int silly = inftl->nb_blocks;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findfreeblock(inftl=0x%x,"
- "desperate=%d)\n", (int)inftl, desperate);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findfreeblock(inftl=%p,"
+ "desperate=%d)\n", inftl, desperate);
/*
* Normally, we force a fold to happen before we run out of free
struct inftl_oob oob;
size_t retlen;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=0x%x,thisVUC=%d,"
- "pending=%d)\n", (int)inftl, thisVUC, pendingblock);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d,"
+ "pending=%d)\n", inftl, thisVUC, pendingblock);
memset(BlockMap, 0xff, sizeof(BlockMap));
memset(BlockDeleted, 0, sizeof(BlockDeleted));
"Virtual Unit Chain %d!\n", thisVUC);
return BLOCK_NIL;
}
-
+
/*
* Scan to find the Erase Unit which holds the actual data for each
* 512-byte block within the Chain.
"Unit Chain 0x%x\n", thisVUC);
return BLOCK_NIL;
}
-
+
thisEUN = inftl->PUtable[thisEUN];
}
*/
if (BlockMap[block] == BLOCK_NIL)
continue;
-
- ret = MTD_READECC(inftl->mbd.mtd, (inftl->EraseSize *
+
+ ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE,
- &retlen, movebuf, (char *)&oob, NULL);
+ &retlen, movebuf);
if (ret < 0) {
- ret = MTD_READECC(inftl->mbd.mtd, (inftl->EraseSize *
+ ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE),
- SECTORSIZE, &retlen, movebuf, (char *)&oob,
- NULL);
- if (ret != -EIO)
+ SECTORSIZE, &retlen, movebuf);
+ if (ret != -EIO)
DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
"away on retry?\n");
}
+ memset(&oob, 0xff, sizeof(struct inftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
(block * SECTORSIZE), SECTORSIZE, &retlen,
- movebuf, (char *)&oob, NULL);
+ movebuf, (char *)&oob, &inftl->oobinfo);
}
/*
if (INFTL_formatblock(inftl, thisEUN) < 0) {
/*
* Could not erase : mark block as reserved.
- * FixMe: Update Bad Unit Table on disk.
*/
inftl->PUtable[thisEUN] = BLOCK_RESERVED;
} else {
return targetEUN;
}
-u16 INFTL_makefreeblock(struct INFTLrecord *inftl, unsigned pendingblock)
+static u16 INFTL_makefreeblock(struct INFTLrecord *inftl, unsigned pendingblock)
{
/*
- * This is the part that needs some cleverness applied.
+ * This is the part that needs some cleverness applied.
* For now, I'm doing the minimum applicable to actually
* get the thing to work.
* Wear-levelling and other clever stuff needs to be implemented
u16 ChainLength = 0, thislen;
u16 chain, EUN;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_makefreeblock(inftl=0x%x,"
- "pending=%d)\n", (int)inftl, pendingblock);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_makefreeblock(inftl=%p,"
+ "pending=%d)\n", inftl, pendingblock);
for (chain = 0; chain < inftl->nb_blocks; chain++) {
EUN = inftl->VUtable[chain];
}
/*
- * INFTL_findwriteunit: Return the unit number into which we can write
+ * INFTL_findwriteunit: Return the unit number into which we can write
* for this block. Make it available if it isn't already.
*/
static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block)
size_t retlen;
int silly, silly2 = 3;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findwriteunit(inftl=0x%x,"
- "block=%d)\n", (int)inftl, block);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findwriteunit(inftl=%p,"
+ "block=%d)\n", inftl, block);
do {
/*
* Invalid block. Don't use it any more.
* Must implement.
*/
- break;
+ break;
}
-
- if (!silly--) {
+
+ if (!silly--) {
printk(KERN_WARNING "INFTL: infinite loop in "
"Virtual Unit Chain 0x%x\n", thisVUC);
return 0xffff;
/*
- * OK. We didn't find one in the existing chain, or there
+ * OK. We didn't find one in the existing chain, or there
* is no existing chain. Allocate a new one.
*/
writeEUN = INFTL_findfreeblock(inftl, 0);
if (writeEUN == BLOCK_NIL) {
/*
* Ouch. This should never happen - we should
- * always be able to make some room somehow.
- * If we get here, we've allocated more storage
+ * always be able to make some room somehow.
+ * If we get here, we've allocated more storage
* space than actual media, or our makefreeblock
* routine is missing something.
*/
INFTL_dumpVUchains(inftl);
#endif
return BLOCK_NIL;
- }
+ }
}
/*
parity |= (nrbits(prev_block, 16) & 0x1) ? 0x2 : 0;
parity |= (nrbits(anac, 8) & 0x1) ? 0x4 : 0;
parity |= (nrbits(nacs, 8) & 0x1) ? 0x8 : 0;
-
+
oob.u.a.virtualUnitNo = cpu_to_le16(thisVUC);
oob.u.a.prevUnitNo = cpu_to_le16(prev_block);
oob.u.a.ANAC = anac;
oob.u.b.parityPerField = parity;
oob.u.b.discarded = 0xaa;
- MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize +
+ MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize +
SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u);
inftl->PUtable[writeEUN] = inftl->VUtable[thisVUC];
struct inftl_bci bci;
size_t retlen;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_trydeletechain(inftl=0x%x,"
- "thisVUC=%d)\n", (int)inftl, thisVUC);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_trydeletechain(inftl=%p,"
+ "thisVUC=%d)\n", inftl, thisVUC);
memset(BlockUsed, 0, sizeof(BlockUsed));
memset(BlockDeleted, 0, sizeof(BlockDeleted));
"Virtual Unit Chain %d!\n", thisVUC);
return;
}
-
+
/*
* Scan through the Erase Units to determine whether any data is in
* each of the 512-byte blocks within the Chain.
"Unit Chain 0x%x\n", thisVUC);
return;
}
-
+
thisEUN = inftl->PUtable[thisEUN];
}
if (INFTL_formatblock(inftl, thisEUN) < 0) {
/*
* Could not erase : mark block as reserved.
- * FixMe: Update Bad Unit Table on medium.
*/
inftl->PUtable[thisEUN] = BLOCK_RESERVED;
} else {
size_t retlen;
struct inftl_bci bci;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_deleteblock(inftl=0x%x,"
- "block=%d)\n", (int)inftl, block);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_deleteblock(inftl=%p,"
+ "block=%d)\n", inftl, block);
while (thisEUN < inftl->nb_blocks) {
if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
return 0;
}
-static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
+static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
char *buffer)
{
struct INFTLrecord *inftl = (void *)mbd;
unsigned int writeEUN;
unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
size_t retlen;
- u8 eccbuf[6];
+ struct inftl_oob oob;
char *p, *pend;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_writeblock(inftl=0x%x,block=%ld,"
- "buffer=0x%x)\n", (int)inftl, block, (int)buffer);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_writeblock(inftl=%p,block=%ld,"
+ "buffer=%p)\n", inftl, block, buffer);
/* Is block all zero? */
pend = buffer + SECTORSIZE;
return 1;
}
+ memset(&oob, 0xff, sizeof(struct inftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
blockofs, SECTORSIZE, &retlen, (char *)buffer,
- (char *)eccbuf, NULL);
+ (char *)&oob, &inftl->oobinfo);
/*
- * No need to write SECTOR_USED flags since they are written
+ * need to write SECTOR_USED flags since they are not written
* in mtd_writeecc
*/
} else {
struct inftl_bci bci;
size_t retlen;
- DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=0x%x,block=%ld,"
- "buffer=0x%x)\n", (int)inftl, block, (int)buffer);
+ DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=%p,block=%ld,"
+ "buffer=%p)\n", inftl, block, buffer);
while (thisEUN < inftl->nb_blocks) {
if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
} else {
size_t retlen;
loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
- u_char eccbuf[6];
- if (MTD_READECC(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
- buffer, eccbuf, NULL))
+ if (MTD_READ(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
+ buffer))
return -EIO;
}
return 0;
return 0;
}
-struct mtd_blktrans_ops inftl_tr = {
+static struct mtd_blktrans_ops inftl_tr = {
.name = "inftl",
.major = INFTL_MAJOR,
.part_bits = INFTL_PARTN_BITS,
.owner = THIS_MODULE,
};
-extern char inftlmountrev[];
-
-int __init init_inftl(void)
+static int __init init_inftl(void)
{
- printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.14 $, "
+ printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.19 $, "
"inftlmount.c %s\n", inftlmountrev);
return register_mtd_blktrans(&inftl_tr);
git://git.onelab.eu / linux-2.6.git / blobdiff