-# $Id: Kconfig,v 1.10 2005/07/11 10:39:27 gleixner Exp $
+# $Id: Kconfig,v 1.11 2005/11/07 11:14:19 gleixner Exp $
menu "Memory Technology Devices (MTD)"
will provide the generic support for MTD drivers to register
themselves with the kernel and for potential users of MTD devices
to enumerate the devices which are present and obtain a handle on
- them. It will also allow you to select individual drivers for
+ them. It will also allow you to select individual drivers for
particular hardware and users of MTD devices. If unsure, say N.
config MTD_DEBUG
If you need code which can detect and parse this table, and register
MTD 'partitions' corresponding to each image in the table, enable
- this option.
+ this option.
You will still need the parsing functions to be called by the driver
- for your particular device. It won't happen automatically. The
- SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
+ for your particular device. It won't happen automatically. The
+ SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
example.
config MTD_REDBOOT_DIRECTORY_BLOCK
partition table. A zero or positive value gives an absolete
erase block number. A negative value specifies a number of
sectors before the end of the device.
-
+
For example "2" means block number 2, "-1" means the last
block and "-2" means the penultimate block.
-
+
config MTD_REDBOOT_PARTS_UNALLOCATED
bool " Include unallocated flash regions"
depends on MTD_REDBOOT_PARTS
---help---
Allow generic configuration of the MTD paritition tables via the kernel
command line. Multiple flash resources are supported for hardware where
- different kinds of flash memory are available.
+ different kinds of flash memory are available.
You will still need the parsing functions to be called by the driver
- for your particular device. It won't happen automatically. The
- SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
+ for your particular device. It won't happen automatically. The
+ SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
example.
The format for the command line is as follows:
<mtddef> := <mtd-id>:<partdef>[,<partdef>]
<partdef> := <size>[@offset][<name>][ro]
<mtd-id> := unique id used in mapping driver/device
- <size> := standard linux memsize OR "-" to denote all
+ <size> := standard linux memsize OR "-" to denote all
remaining space
<name> := (NAME)
- Due to the way Linux handles the command line, no spaces are
- allowed in the partition definition, including mtd id's and partition
+ Due to the way Linux handles the command line, no spaces are
+ allowed in the partition definition, including mtd id's and partition
names.
Examples:
tristate "INFTL (Inverse NAND Flash Translation Layer) support"
depends on MTD
---help---
- This provides support for the Inverse NAND Flash Translation
+ This provides support for the Inverse NAND Flash Translation
Layer which is used on M-Systems' newer DiskOnChip devices. It
uses a kind of pseudo-file system on a flash device to emulate
a block device with 512-byte sectors, on top of which you put
tristate "Resident Flash Disk (Flash Translation Layer) support"
depends on MTD
---help---
- This provides support for the flash translation layer known
- as the Resident Flash Disk (RFD), as used by the Embedded BIOS
+ This provides support for the flash translation layer known
+ as the Resident Flash Disk (RFD), as used by the Embedded BIOS
of General Software. There is a blurb at:
http://www.gensw.com/pages/prod/bios/rfd.htm
/*======================================================================
drivers/mtd/afs.c: ARM Flash Layout/Partitioning
-
+
Copyright (C) 2000 ARM Limited
-
+
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- This is access code for flashes using ARM's flash partitioning
+
+ This is access code for flashes using ARM's flash partitioning
standards.
- $Id: afs.c,v 1.13 2004/02/27 22:09:59 rmk Exp $
+ $Id: afs.c,v 1.15 2005/11/07 11:14:19 gleixner Exp $
======================================================================*/
return ret;
}
-static int parse_afs_partitions(struct mtd_info *mtd,
+static int parse_afs_partitions(struct mtd_info *mtd,
struct mtd_partition **pparts,
unsigned long origin)
{
/*
- * $Id: cmdlinepart.c,v 1.18 2005/06/07 15:04:26 joern Exp $
+ * $Id: cmdlinepart.c,v 1.19 2005/11/07 11:14:19 gleixner Exp $
*
* Read flash partition table from command line
*
* Copyright 2002 SYSGO Real-Time Solutions GmbH
*
* The format for the command line is as follows:
- *
+ *
* mtdparts=<mtddef>[;<mtddef]
* <mtddef> := <mtd-id>:<partdef>[,<partdef>]
* <partdef> := <size>[@offset][<name>][ro]
* <mtd-id> := unique name used in mapping driver/device (mtd->name)
* <size> := standard linux memsize OR "-" to denote all remaining space
* <name> := '(' NAME ')'
- *
+ *
* Examples:
- *
+ *
* 1 NOR Flash, with 1 single writable partition:
* edb7312-nor:-
- *
+ *
* 1 NOR Flash with 2 partitions, 1 NAND with one
* edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
*/
/*
* Parse one partition definition for an MTD. Since there can be many
- * comma separated partition definitions, this function calls itself
+ * comma separated partition definitions, this function calls itself
* recursively until no more partition definitions are found. Nice side
* effect: the memory to keep the mtd_partition structs and the names
* is allocated upon the last definition being found. At that point the
* syntax has been verified ok.
*/
-static struct mtd_partition * newpart(char *s,
+static struct mtd_partition * newpart(char *s,
char **retptr,
int *num_parts,
- int this_part,
- unsigned char **extra_mem_ptr,
+ int this_part,
+ unsigned char **extra_mem_ptr,
int extra_mem_size)
{
struct mtd_partition *parts;
mask_flags = 0; /* this is going to be a regular partition */
delim = 0;
/* check for offset */
- if (*s == '@')
+ if (*s == '@')
{
s++;
offset = memparse(s, &s);
{
delim = ')';
}
-
+
if (delim)
{
char *p;
name = NULL;
name_len = 13; /* Partition_000 */
}
-
+
/* record name length for memory allocation later */
extra_mem_size += name_len + 1;
/* test for options */
- if (strncmp(s, "ro", 2) == 0)
+ if (strncmp(s, "ro", 2) == 0)
{
mask_flags |= MTD_WRITEABLE;
s += 2;
return NULL;
}
/* more partitions follow, parse them */
- if ((parts = newpart(s + 1, &s, num_parts,
+ if ((parts = newpart(s + 1, &s, num_parts,
this_part + 1, &extra_mem, extra_mem_size)) == 0)
return NULL;
}
extra_mem += name_len + 1;
dbg(("partition %d: name <%s>, offset %x, size %x, mask flags %x\n",
- this_part,
+ this_part,
parts[this_part].name,
parts[this_part].offset,
parts[this_part].size,
return parts;
}
-/*
- * Parse the command line.
+/*
+ * Parse the command line.
*/
static int mtdpart_setup_real(char *s)
{
dbg(("parsing <%s>\n", p+1));
- /*
+ /*
* parse one mtd. have it reserve memory for the
* struct cmdline_mtd_partition and the mtd-id string.
*/
&num_parts, /* out: number of parts */
0, /* first partition */
(unsigned char**)&this_mtd, /* out: extra mem */
- mtd_id_len + 1 + sizeof(*this_mtd) +
+ mtd_id_len + 1 + sizeof(*this_mtd) +
sizeof(void*)-1 /*alignment*/);
if(!parts)
{
}
/* align this_mtd */
- this_mtd = (struct cmdline_mtd_partition *)
+ this_mtd = (struct cmdline_mtd_partition *)
ALIGN((unsigned long)this_mtd, sizeof(void*));
- /* enter results */
+ /* enter results */
this_mtd->parts = parts;
this_mtd->num_parts = num_parts;
this_mtd->mtd_id = (char*)(this_mtd + 1);
strlcpy(this_mtd->mtd_id, mtd_id, mtd_id_len + 1);
/* link into chain */
- this_mtd->next = partitions;
+ this_mtd->next = partitions;
partitions = this_mtd;
- dbg(("mtdid=<%s> num_parts=<%d>\n",
+ dbg(("mtdid=<%s> num_parts=<%d>\n",
this_mtd->mtd_id, this_mtd->num_parts));
-
+
/* EOS - we're done */
if (*s == 0)
* information. It returns partitions for the requested mtd device, or
* the first one in the chain if a NULL mtd_id is passed in.
*/
-static int parse_cmdline_partitions(struct mtd_info *master,
+static int parse_cmdline_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
unsigned long origin)
{
part->parts[i].size = master->size - offset;
if (offset + part->parts[i].size > master->size)
{
- printk(KERN_WARNING ERRP
+ printk(KERN_WARNING ERRP
"%s: partitioning exceeds flash size, truncating\n",
part->mtd_id);
part->parts[i].size = master->size - offset;
}
-/*
- * This is the handler for our kernel parameter, called from
+/*
+ * This is the handler for our kernel parameter, called from
* main.c::checksetup(). Note that we can not yet kmalloc() anything,
* so we only save the commandline for later processing.
*
/* This version ported to the Linux-MTD system by dwmw2@infradead.org
- * $Id: ftl.c,v 1.55 2005/01/17 13:47:21 hvr Exp $
+ * $Id: ftl.c,v 1.58 2005/11/07 11:14:19 gleixner Exp $
*
* Fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* - fixes some leaks on failure in build_maps and ftl_notify_add, cleanups
Use of the FTL format for non-PCMCIA applications may be an
infringement of these patents. For additional information,
contact M-Systems (http://www.m-sys.com) directly.
-
+
======================================================================*/
#include <linux/mtd/blktrans.h>
#include <linux/module.h>
Scan_header() checks to see if a memory region contains an FTL
partition. build_maps() reads all the erase unit headers, builds
the erase unit map, and then builds the virtual page map.
-
+
======================================================================*/
static int scan_header(partition_t *part)
(offset + sizeof(header)) < max_offset;
offset += part->mbd.mtd->erasesize ? : 0x2000) {
- err = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &ret,
+ err = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &ret,
(unsigned char *)&header);
-
- if (err)
+
+ if (err)
return err;
if (strcmp(header.DataOrgTuple+3, "FTL100") == 0) break;
for (i = 0; i < le16_to_cpu(part->header.NumEraseUnits); i++) {
offset = ((i + le16_to_cpu(part->header.FirstPhysicalEUN))
<< part->header.EraseUnitSize);
- ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &retval,
+ ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(header), &retval,
(unsigned char *)&header);
-
- if (ret)
+
+ if (ret)
goto out_XferInfo;
ret = -1;
"don't add up!\n");
goto out_XferInfo;
}
-
+
/* Set up virtual page map */
blocks = le32_to_cpu(header.FormattedSize) >> header.BlockSize;
part->VirtualBlockMap = vmalloc(blocks * sizeof(u_int32_t));
part->EUNInfo[i].Free = 0;
part->EUNInfo[i].Deleted = 0;
offset = part->EUNInfo[i].Offset + le32_to_cpu(header.BAMOffset);
-
- ret = part->mbd.mtd->read(part->mbd.mtd, offset,
- part->BlocksPerUnit * sizeof(u_int32_t), &retval,
+
+ ret = part->mbd.mtd->read(part->mbd.mtd, offset,
+ part->BlocksPerUnit * sizeof(u_int32_t), &retval,
(unsigned char *)part->bam_cache);
-
- if (ret)
+
+ if (ret)
goto out_bam_cache;
for (j = 0; j < part->BlocksPerUnit; j++) {
part->EUNInfo[i].Deleted++;
}
}
-
+
ret = 0;
goto out;
Erase_xfer() schedules an asynchronous erase operation for a
transfer unit.
-
+
======================================================================*/
static int erase_xfer(partition_t *part,
xfer->state = XFER_ERASING;
/* Is there a free erase slot? Always in MTD. */
-
-
+
+
erase=kmalloc(sizeof(struct erase_info), GFP_KERNEL);
- if (!erase)
+ if (!erase)
return -ENOMEM;
erase->mtd = part->mbd.mtd;
erase->addr = xfer->Offset;
erase->len = 1 << part->header.EraseUnitSize;
erase->priv = (u_long)part;
-
+
ret = part->mbd.mtd->erase(part->mbd.mtd, erase);
if (!ret)
Prepare_xfer() takes a freshly erased transfer unit and gives
it an appropriate header.
-
+
======================================================================*/
static void ftl_erase_callback(struct erase_info *erase)
partition_t *part;
struct xfer_info_t *xfer;
int i;
-
+
/* Look up the transfer unit */
part = (partition_t *)(erase->priv);
xfer = &part->XferInfo[i];
xfer->state = XFER_FAILED;
-
+
DEBUG(1, "ftl_cs: preparing xfer unit at 0x%x\n", xfer->Offset);
/* Write the transfer unit header */
for (i = 0; i < nbam; i++, offset += sizeof(u_int32_t)) {
- ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
+ ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
&retlen, (u_char *)&ctl);
if (ret)
}
xfer->state = XFER_PREPARED;
return 0;
-
+
} /* prepare_xfer */
/*======================================================================
All data blocks are copied to the corresponding blocks in the
target unit, so the virtual block map does not need to be
updated.
-
+
======================================================================*/
static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
xfer = &part->XferInfo[xferunit];
DEBUG(2, "ftl_cs: copying block 0x%x to 0x%x\n",
eun->Offset, xfer->Offset);
-
-
+
+
/* Read current BAM */
if (part->bam_index != srcunit) {
offset = eun->Offset + le32_to_cpu(part->header.BAMOffset);
- ret = part->mbd.mtd->read(part->mbd.mtd, offset,
+ ret = part->mbd.mtd->read(part->mbd.mtd, offset,
part->BlocksPerUnit * sizeof(u_int32_t),
&retlen, (u_char *) (part->bam_cache));
part->bam_index = 0xffff;
if (ret) {
- printk( KERN_WARNING "ftl: Failed to read BAM cache in copy_erase_unit()!\n");
+ printk( KERN_WARNING "ftl: Failed to read BAM cache in copy_erase_unit()!\n");
return ret;
}
}
-
+
/* Write the LogicalEUN for the transfer unit */
xfer->state = XFER_UNKNOWN;
offset = xfer->Offset + 20; /* Bad! */
ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int16_t),
&retlen, (u_char *) &unit);
-
+
if (ret) {
printk( KERN_WARNING "ftl: Failed to write back to BAM cache in copy_erase_unit()!\n");
return ret;
}
-
+
/* Copy all data blocks from source unit to transfer unit */
src = eun->Offset; dest = xfer->Offset;
}
/* Write the BAM to the transfer unit */
- ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + le32_to_cpu(part->header.BAMOffset),
- part->BlocksPerUnit * sizeof(int32_t), &retlen,
+ ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + le32_to_cpu(part->header.BAMOffset),
+ part->BlocksPerUnit * sizeof(int32_t), &retlen,
(u_char *)part->bam_cache);
if (ret) {
printk( KERN_WARNING "ftl: Error writing BAM in copy_erase_unit\n");
return ret;
}
-
+
/* All clear? Then update the LogicalEUN again */
ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + 20, sizeof(u_int16_t),
&retlen, (u_char *)&srcunitswap);
if (ret) {
printk(KERN_WARNING "ftl: Error writing new LogicalEUN in copy_erase_unit\n");
return ret;
- }
-
-
+ }
+
+
/* Update the maps and usage stats*/
i = xfer->EraseCount;
xfer->EraseCount = eun->EraseCount;
part->FreeTotal += free;
eun->Free = free;
eun->Deleted = 0;
-
+
/* Now, the cache should be valid for the new block */
part->bam_index = srcunit;
-
+
return 0;
} /* copy_erase_unit */
oldest data unit instead. This means that we generally postpone
the next reclaimation as long as possible, but shuffle static
stuff around a bit for wear leveling.
-
+
======================================================================*/
static int reclaim_block(partition_t *part)
else
DEBUG(1, "ftl_cs: reclaim failed: no "
"suitable transfer units!\n");
-
+
return -EIO;
}
}
returns the block index -- the erase unit is just the currently
cached unit. If there are no free blocks, it returns 0 -- this
is never a valid data block because it contains the header.
-
+
======================================================================*/
#ifdef PSYCHO_DEBUG
u_int32_t blk;
size_t retlen;
int ret;
-
+
/* Find an erase unit with some free space */
stop = (part->bam_index == 0xffff) ? 0 : part->bam_index;
eun = stop;
if (part->EUNInfo[eun].Free == 0)
return 0;
-
+
/* Is this unit's BAM cached? */
if (eun != part->bam_index) {
/* Invalidate cache */
part->bam_index = 0xffff;
- ret = part->mbd.mtd->read(part->mbd.mtd,
+ ret = part->mbd.mtd->read(part->mbd.mtd,
part->EUNInfo[eun].Offset + le32_to_cpu(part->header.BAMOffset),
part->BlocksPerUnit * sizeof(u_int32_t),
&retlen, (u_char *) (part->bam_cache));
-
+
if (ret) {
printk(KERN_WARNING"ftl: Error reading BAM in find_free\n");
return 0;
}
DEBUG(2, "ftl_cs: found free block at %d in %d\n", blk, eun);
return blk;
-
+
} /* find_free */
/*======================================================================
Read a series of sectors from an FTL partition.
-
+
======================================================================*/
static int ftl_read(partition_t *part, caddr_t buffer,
u_long i;
int ret;
size_t offset, retlen;
-
+
DEBUG(2, "ftl_cs: ftl_read(0x%p, 0x%lx, %ld)\n",
part, sector, nblocks);
if (!(part->state & FTL_FORMATTED)) {
/*======================================================================
Write a series of sectors to an FTL partition
-
+
======================================================================*/
static int set_bam_entry(partition_t *part, u_int32_t log_addr,
blk = (log_addr % bsize) / SECTOR_SIZE;
offset = (part->EUNInfo[eun].Offset + blk * sizeof(u_int32_t) +
le32_to_cpu(part->header.BAMOffset));
-
+
#ifdef PSYCHO_DEBUG
ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(u_int32_t),
&retlen, (u_char *)&old_addr);
if (ret)
return ret;
}
-
+
bsize = 1 << part->header.EraseUnitSize;
virt_addr = sector * SECTOR_SIZE | BLOCK_DATA;
log_addr = part->bam_index * bsize + blk * SECTOR_SIZE;
part->EUNInfo[part->bam_index].Free--;
part->FreeTotal--;
- if (set_bam_entry(part, log_addr, 0xfffffffe))
+ if (set_bam_entry(part, log_addr, 0xfffffffe))
return -EIO;
part->EUNInfo[part->bam_index].Deleted++;
offset = (part->EUNInfo[part->bam_index].Offset +
blk * SECTOR_SIZE);
- ret = part->mbd.mtd->write(part->mbd.mtd, offset, SECTOR_SIZE, &retlen,
+ ret = part->mbd.mtd->write(part->mbd.mtd, offset, SECTOR_SIZE, &retlen,
buffer);
if (ret) {
offset);
return -EIO;
}
-
+
/* Only delete the old entry when the new entry is ready */
old_addr = part->VirtualBlockMap[sector+i];
if (old_addr != 0xffffffff) {
return -EIO;
part->VirtualBlockMap[sector+i] = log_addr;
part->EUNInfo[part->bam_index].Deleted--;
-
+
buffer += SECTOR_SIZE;
virt_addr += SECTOR_SIZE;
}
partition_t *partition;
partition = kmalloc(sizeof(partition_t), GFP_KERNEL);
-
+
if (!partition) {
printk(KERN_WARNING "No memory to scan for FTL on %s\n",
mtd->name);
return;
- }
+ }
memset(partition, 0, sizeof(partition_t));
partition->mbd.mtd = mtd;
- if ((scan_header(partition) == 0) &&
+ if ((scan_header(partition) == 0) &&
(build_maps(partition) == 0)) {
-
+
partition->state = FTL_FORMATTED;
#ifdef PCMCIA_DEBUG
printk(KERN_INFO "ftl_cs: opening %d KiB FTL partition\n",
int init_ftl(void)
{
- DEBUG(0, "$Id: ftl.c,v 1.55 2005/01/17 13:47:21 hvr Exp $\n");
+ DEBUG(0, "$Id: ftl.c,v 1.58 2005/11/07 11:14:19 gleixner Exp $\n");
return register_mtd_blktrans(&ftl_tr);
}
-/*
+/*
* 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 1.18 2004/11/16 18:28:59 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
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 );
}
"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_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE,
- &retlen, movebuf);
+ &retlen, movebuf);
if (ret < 0) {
ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE),
SECTORSIZE, &retlen, movebuf);
- if (ret != -EIO)
+ if (ret != -EIO)
DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
"away on retry?\n");
}
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
}
/*
- * 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)
* 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];
"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];
}
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;
static int __init init_inftl(void)
{
- printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.18 $, "
+ printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.19 $, "
"inftlmount.c %s\n", inftlmountrev);
return register_mtd_blktrans(&inftl_tr);
-/*
+/*
* 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 1.17 2005/08/08 08:56:19 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: 1.17 $";
+char inftlmountrev[]="$Revision: 1.18 $";
/*
* find_boot_record: Find the INFTL Media Header and its Spare copy which
inftl->nb_boot_blocks);
return -1;
}
-
+
inftl->mbd.size = inftl->numvunits *
(inftl->EraseSize / SECTORSIZE);
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;
*
* Return: 0 when succeed, -1 on error.
*
- * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
+ * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
*/
int INFTL_formatblock(struct INFTLrecord *inftl, int block)
{
printk(KERN_ERR "INFTL: Out of memory.\n");
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) {
/*
/*
- * $Id: mtd_blkdevs.c,v 1.26 2005/07/29 19:42:04 tpoynor Exp $
+ * $Id: mtd_blkdevs.c,v 1.27 2005/11/07 11:14:20 gleixner Exp $
*
* (C) 2003 David Woodhouse <dwmw2@infradead.org>
*
daemonize("%sd", tr->name);
/* daemonize() doesn't do this for us since some kernel threads
- actually want to deal with signals. We can't just call
+ actually want to deal with signals. We can't just call
exit_sighand() since that'll cause an oops when we finally
do exit. */
spin_lock_irq(¤t->sighand->siglock);
spin_unlock_irq(¤t->sighand->siglock);
spin_lock_irq(rq->queue_lock);
-
+
while (!tr->blkcore_priv->exiting) {
struct request *req;
struct mtd_blktrans_dev *dev;
if (!try_module_get(tr->owner))
goto out_tr;
- /* FIXME: Locking. A hot pluggable device can go away
+ /* FIXME: Locking. A hot pluggable device can go away
(del_mtd_device can be called for it) without its module
being unloaded. */
dev->mtd->usecount++;
}
-static int blktrans_ioctl(struct inode *inode, struct file *file,
+static int blktrans_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct mtd_blktrans_dev *dev = inode->i_bdev->bd_disk->private_data;
/* Required number was free */
list_add_tail(&new->list, &d->list);
goto added;
- }
+ }
last_devnum = d->devnum;
}
if (new->devnum == -1)
gd->major = tr->major;
gd->first_minor = (new->devnum) << tr->part_bits;
gd->fops = &mtd_blktrans_ops;
-
+
if (tr->part_bits)
if (new->devnum < 26)
snprintf(gd->disk_name, sizeof(gd->disk_name),
set_disk_ro(gd, 1);
add_disk(gd);
-
+
return 0;
}
del_gendisk(old->blkcore_priv);
put_disk(old->blkcore_priv);
-
+
return 0;
}
.add = blktrans_notify_add,
.remove = blktrans_notify_remove,
};
-
+
int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
{
int ret, i;
- /* Register the notifier if/when the first device type is
+ /* Register the notifier if/when the first device type is
registered, to prevent the link/init ordering from fucking
us over. */
if (!blktrans_notifier.list.next)
kfree(tr->blkcore_priv);
up(&mtd_table_mutex);
return ret;
- }
+ }
INIT_LIST_HEAD(&tr->devs);
list_add(&tr->list, &blktrans_majors);
-/*
+/*
* Direct MTD block device access
*
- * $Id: mtdblock.c,v 1.67 2005/11/06 10:04:37 gleixner Exp $
+ * $Id: mtdblock.c,v 1.68 2005/11/07 11:14:20 gleixner Exp $
*
* (C) 2000-2003 Nicolas Pitre <nico@cam.org>
* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
/*
* Cache stuff...
- *
+ *
* Since typical flash erasable sectors are much larger than what Linux's
* buffer cache can handle, we must implement read-modify-write on flash
* sectors for each block write requests. To avoid over-erasing flash sectors
wake_up(wait_q);
}
-static int erase_write (struct mtd_info *mtd, unsigned long pos,
+static int erase_write (struct mtd_info *mtd, unsigned long pos,
int len, const char *buf)
{
struct erase_info erase;
return 0;
DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: writing cached data for \"%s\" "
- "at 0x%lx, size 0x%x\n", mtd->name,
+ "at 0x%lx, size 0x%x\n", mtd->name,
mtdblk->cache_offset, mtdblk->cache_size);
-
- ret = erase_write (mtd, mtdblk->cache_offset,
+
+ ret = erase_write (mtd, mtdblk->cache_offset,
mtdblk->cache_size, mtdblk->cache_data);
if (ret)
return ret;
/*
* Here we could argubly set the cache state to STATE_CLEAN.
- * However this could lead to inconsistency since we will not
- * be notified if this content is altered on the flash by other
+ * However this could lead to inconsistency since we will not
+ * be notified if this content is altered on the flash by other
* means. Let's declare it empty and leave buffering tasks to
* the buffer cache instead.
*/
}
-static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
+static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos,
int len, const char *buf)
{
struct mtd_info *mtd = mtdblk->mtd;
DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: write on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
-
+
if (!sect_size)
return MTD_WRITE (mtd, pos, len, &retlen, buf);
unsigned long sect_start = (pos/sect_size)*sect_size;
unsigned int offset = pos - sect_start;
unsigned int size = sect_size - offset;
- if( size > len )
+ if( size > len )
size = len;
if (size == sect_size) {
- /*
+ /*
* We are covering a whole sector. Thus there is no
* need to bother with the cache while it may still be
* useful for other partial writes.
if (mtdblk->cache_state == STATE_DIRTY &&
mtdblk->cache_offset != sect_start) {
ret = write_cached_data(mtdblk);
- if (ret)
+ if (ret)
return ret;
}
}
-static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
+static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos,
int len, char *buf)
{
struct mtd_info *mtd = mtdblk->mtd;
size_t retlen;
int ret;
- DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
+ DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n",
mtd->name, pos, len);
-
+
if (!sect_size)
return MTD_READ (mtd, pos, len, &retlen, buf);
unsigned long sect_start = (pos/sect_size)*sect_size;
unsigned int offset = pos - sect_start;
unsigned int size = sect_size - offset;
- if (size > len)
+ if (size > len)
size = len;
/*
int dev = mbd->devnum;
DEBUG(MTD_DEBUG_LEVEL1,"mtdblock_open\n");
-
+
if (mtdblks[dev]) {
mtdblks[dev]->count++;
return 0;
}
-
+
/* OK, it's not open. Create cache info for it */
mtdblk = kmalloc(sizeof(struct mtdblk_dev), GFP_KERNEL);
if (!mtdblk)
}
mtdblks[dev] = mtdblk;
-
+
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
-}
+}
static int mtdblock_flush(struct mtd_blktrans_dev *dev)
{
/*
- * $Id: mtdchar.c,v 1.75 2005/11/06 10:04:37 gleixner Exp $
+ * $Id: mtdchar.c,v 1.76 2005/11/07 11:14:20 gleixner Exp $
*
* Character-device access to raw MTD devices.
*
class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
NULL, "mtd%d", mtd->index);
-
+
class_device_create(mtd_class, NULL,
MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
NULL, "mtd%dro", mtd->index);
return -EACCES;
mtd = get_mtd_device(NULL, devnum);
-
+
if (!mtd)
return -ENODEV;
-
+
if (MTD_ABSENT == mtd->type) {
put_mtd_device(mtd);
return -ENODEV;
}
file->private_data = mtd;
-
+
/* You can't open it RW if it's not a writeable device */
if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) {
put_mtd_device(mtd);
return -EACCES;
}
-
+
return 0;
} /* mtd_open */
DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n");
mtd = TO_MTD(file);
-
+
if (mtd->sync)
mtd->sync(mtd);
-
+
put_mtd_device(mtd);
return 0;
int ret=0;
int len;
char *kbuf;
-
+
DEBUG(MTD_DEBUG_LEVEL0,"MTD_read\n");
if (*ppos + count > mtd->size)
if (!count)
return 0;
-
+
/* FIXME: Use kiovec in 2.5 to lock down the user's buffers
and pass them directly to the MTD functions */
while (count) {
- if (count > MAX_KMALLOC_SIZE)
+ if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
kbuf=kmalloc(len,GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
-
+
switch (MTD_MODE(file)) {
case MTD_MODE_OTP_FACT:
ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf);
}
/* Nand returns -EBADMSG on ecc errors, but it returns
* the data. For our userspace tools it is important
- * to dump areas with ecc errors !
+ * to dump areas with ecc errors !
* Userspace software which accesses NAND this way
* must be aware of the fact that it deals with NAND
*/
kfree(kbuf);
return ret;
}
-
+
kfree(kbuf);
}
int len;
DEBUG(MTD_DEBUG_LEVEL0,"MTD_write\n");
-
+
if (*ppos == mtd->size)
return -ENOSPC;
-
+
if (*ppos + count > mtd->size)
count = mtd->size - *ppos;
return 0;
while (count) {
- if (count > MAX_KMALLOC_SIZE)
+ if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
kfree(kbuf);
return -EFAULT;
}
-
+
switch (MTD_MODE(file)) {
case MTD_MODE_OTP_FACT:
ret = -EROFS;
kfree(kbuf);
return ret;
}
-
+
kfree(kbuf);
}
void __user *argp = (void __user *)arg;
int ret = 0;
u_long size;
-
+
DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT;
if (!access_ok(VERIFY_WRITE, argp, size))
return -EFAULT;
}
-
+
switch (cmd) {
case MEMGETREGIONCOUNT:
if (copy_to_user(argp, &(mtd->numeraseregions), sizeof(int)))
erase->mtd = mtd;
erase->callback = mtdchar_erase_callback;
erase->priv = (unsigned long)&waitq;
-
+
/*
FIXME: Allow INTERRUPTIBLE. Which means
not having the wait_queue head on the stack.
-
+
If the wq_head is on the stack, and we
leave because we got interrupted, then the
wq_head is no longer there when the
struct mtd_oob_buf buf;
void *databuf;
ssize_t retlen;
-
+
if(!(file->f_mode & 2))
return -EPERM;
if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
return -EFAULT;
-
+
if (buf.length > 0x4096)
return -EINVAL;
databuf = kmalloc(buf.length, GFP_KERNEL);
if (!databuf)
return -ENOMEM;
-
+
if (copy_from_user(databuf, buf.ptr, buf.length)) {
kfree(databuf);
return -EFAULT;
if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
return -EFAULT;
-
+
if (buf.length > 0x4096)
return -EINVAL;
databuf = kmalloc(buf.length, GFP_KERNEL);
if (!databuf)
return -ENOMEM;
-
+
ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf);
if (put_user(retlen, (uint32_t __user *)argp))
ret = -EFAULT;
else if (retlen && copy_to_user(buf.ptr, databuf, retlen))
ret = -EFAULT;
-
+
kfree(databuf);
break;
}
case MEMGETBADBLOCK:
{
loff_t offs;
-
+
if (copy_from_user(&offs, argp, sizeof(loff_t)))
return -EFAULT;
if (!mtd->block_isbad)
*
* This code is GPL
*
- * $Id: mtdconcat.c,v 1.10 2005/11/06 10:04:37 gleixner Exp $
+ * $Id: mtdconcat.c,v 1.11 2005/11/07 11:14:20 gleixner Exp $
*/
#include <linux/kernel.h>
*/
#define CONCAT(x) ((struct mtd_concat *)(x))
-/*
+/*
* MTD methods which look up the relevant subdevice, translate the
* effective address and pass through to the subdevice.
*/
return &concat->mtd;
}
-/*
+/*
* This function destroys an MTD object obtained from concat_mtd_devs()
*/
/*
- * $Id: mtdcore.c,v 1.46 2005/08/11 17:13:43 gleixner Exp $
+ * $Id: mtdcore.c,v 1.47 2005/11/07 11:14:20 gleixner Exp $
*
* Core registration and callback routines for MTD
* drivers and users.
#include <linux/mtd/mtd.h>
-/* These are exported solely for the purpose of mtd_blkdevs.c. You
+/* These are exported solely for the purpose of mtd_blkdevs.c. You
should not use them for _anything_ else */
DECLARE_MUTEX(mtd_table_mutex);
struct mtd_info *mtd_table[MAX_MTD_DEVICES];
struct mtd_notifier *not = list_entry(this, struct mtd_notifier, list);
not->add(mtd);
}
-
+
up(&mtd_table_mutex);
/* We _know_ we aren't being removed, because
our caller is still holding us here. So none
__module_get(THIS_MODULE);
return 0;
}
-
+
up(&mtd_table_mutex);
return 1;
}
int del_mtd_device (struct mtd_info *mtd)
{
int ret;
-
+
down(&mtd_table_mutex);
if (mtd_table[mtd->index] != mtd) {
ret = -ENODEV;
} else if (mtd->usecount) {
- printk(KERN_NOTICE "Removing MTD device #%d (%s) with use count %d\n",
+ printk(KERN_NOTICE "Removing MTD device #%d (%s) with use count %d\n",
mtd->index, mtd->name, mtd->usecount);
ret = -EBUSY;
} else {
list_add(&new->list, &mtd_notifiers);
__module_get(THIS_MODULE);
-
+
for (i=0; i< MAX_MTD_DEVICES; i++)
if (mtd_table[i])
new->add(mtd_table[i]);
for (i=0; i< MAX_MTD_DEVICES; i++)
if (mtd_table[i])
old->remove(mtd_table[i]);
-
+
list_del(&old->list);
up(&mtd_table_mutex);
return 0;
* both, return the num'th driver only if its address matches. Return NULL
* if not.
*/
-
+
struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)
{
struct mtd_info *ret = NULL;
*
* This code is GPL
*
- * $Id: mtdpart.c,v 1.54 2005/09/30 14:49:08 dedekind Exp $
+ * $Id: mtdpart.c,v 1.55 2005/11/07 11:14:20 gleixner Exp $
*
* 02-21-2002 Thomas Gleixner <gleixner@autronix.de>
* added support for read_oob, write_oob
- */
+ */
#include <linux/module.h>
#include <linux/types.h>
*/
#define PART(x) ((struct mtd_part *)(x))
-
-/*
+
+/*
* MTD methods which simply translate the effective address and pass through
* to the _real_ device.
*/
-static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- if (part->master->read_ecc == NULL)
- return part->master->read (part->master, from + part->offset,
+ if (part->master->read_ecc == NULL)
+ return part->master->read (part->master, from + part->offset,
len, retlen, buf);
else
- return part->master->read_ecc (part->master, from + part->offset,
+ return part->master->read_ecc (part->master, from + part->offset,
len, retlen, buf, NULL, &mtd->oobinfo);
}
-static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char **buf)
{
struct mtd_part *part = PART(mtd);
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- return part->master->point (part->master, from + part->offset,
+ return part->master->point (part->master, from + part->offset,
len, retlen, buf);
}
static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
}
-static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel)
{
struct mtd_part *part = PART(mtd);
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- return part->master->read_ecc (part->master, from + part->offset,
+ return part->master->read_ecc (part->master, from + part->offset,
len, retlen, buf, eccbuf, oobsel);
}
-static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_read_oob (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
- return part->master->read_oob (part->master, from + part->offset,
+ return part->master->read_oob (part->master, from + part->offset,
len, retlen, buf);
}
-static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
- return part->master->read_user_prot_reg (part->master, from,
+ return part->master->read_user_prot_reg (part->master, from,
len, retlen, buf);
}
return part->master->get_user_prot_info (part->master, buf, len);
}
-static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
- return part->master->read_fact_prot_reg (part->master, from,
+ return part->master->read_fact_prot_reg (part->master, from,
len, retlen, buf);
}
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
- if (part->master->write_ecc == NULL)
- return part->master->write (part->master, to + part->offset,
+ if (part->master->write_ecc == NULL)
+ return part->master->write (part->master, to + part->offset,
len, retlen, buf);
else
- return part->master->write_ecc (part->master, to + part->offset,
+ return part->master->write_ecc (part->master, to + part->offset,
len, retlen, buf, NULL, &mtd->oobinfo);
-
+
}
static int part_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
- return part->master->write_ecc (part->master, to + part->offset,
+ return part->master->write_ecc (part->master, to + part->offset,
len, retlen, buf, eccbuf, oobsel);
}
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
- return part->master->write_oob (part->master, to + part->offset,
+ return part->master->write_oob (part->master, to + part->offset,
len, retlen, buf);
}
-static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
+static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
- return part->master->write_user_prot_reg (part->master, from,
+ return part->master->write_user_prot_reg (part->master, from,
len, retlen, buf);
}
-static int part_lock_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len)
+static int part_lock_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len)
{
struct mtd_part *part = PART(mtd);
return part->master->lock_user_prot_reg (part->master, from, len);
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
- if (part->master->writev_ecc == NULL)
+ if (part->master->writev_ecc == NULL)
return part->master->writev (part->master, vecs, count,
to + part->offset, retlen);
else
unsigned long count, loff_t from, size_t *retlen)
{
struct mtd_part *part = PART(mtd);
- if (part->master->readv_ecc == NULL)
+ if (part->master->readv_ecc == NULL)
return part->master->readv (part->master, vecs, count,
from + part->offset, retlen);
else
return part->master->readv_ecc (part->master, vecs, count,
- from + part->offset, retlen,
+ from + part->offset, retlen,
NULL, &mtd->oobinfo);
}
if (oobsel == NULL)
oobsel = &mtd->oobinfo;
return part->master->readv_ecc (part->master, vecs, count,
- from + part->offset, retlen,
+ from + part->offset, retlen,
eccbuf, oobsel);
}
static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len)
{
struct mtd_part *part = PART(mtd);
- if ((len + ofs) > mtd->size)
+ if ((len + ofs) > mtd->size)
return -EINVAL;
return part->master->lock(part->master, ofs + part->offset, len);
}
static int part_unlock (struct mtd_info *mtd, loff_t ofs, size_t len)
{
struct mtd_part *part = PART(mtd);
- if ((len + ofs) > mtd->size)
+ if ((len + ofs) > mtd->size)
return -EINVAL;
return part->master->unlock(part->master, ofs + part->offset, len);
}
return part->master->block_markbad(part->master, ofs);
}
-/*
- * This function unregisters and destroy all slave MTD objects which are
+/*
+ * This function unregisters and destroy all slave MTD objects which are
* attached to the given master MTD object.
*/
* (Q: should we register the master MTD object as well?)
*/
-int add_mtd_partitions(struct mtd_info *master,
+int add_mtd_partitions(struct mtd_info *master,
const struct mtd_partition *parts,
int nbparts)
{
slave->mtd.point = part_point;
slave->mtd.unpoint = part_unpoint;
}
-
+
if (master->read_ecc)
slave->mtd.read_ecc = part_read_ecc;
if (master->write_ecc)
if (slave->mtd.size == MTDPART_SIZ_FULL)
slave->mtd.size = master->size - slave->offset;
cur_offset = slave->offset + slave->mtd.size;
-
- printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
+
+ printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
slave->offset + slave->mtd.size, slave->mtd.name);
/* let's do some sanity checks */
/* Deal with variable erase size stuff */
int i;
struct mtd_erase_region_info *regions = master->eraseregions;
-
+
/* Find the first erase regions which is part of this partition. */
for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
;
slave->mtd.erasesize = master->erasesize;
}
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
+ if ((slave->mtd.flags & MTD_WRITEABLE) &&
(slave->offset % slave->mtd.erasesize)) {
/* Doesn't start on a boundary of major erase size */
/* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */
printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
parts[i].name);
}
- if ((slave->mtd.flags & MTD_WRITEABLE) &&
+ if ((slave->mtd.flags & MTD_WRITEABLE) &&
(slave->mtd.size % slave->mtd.erasesize)) {
slave->mtd.flags &= ~MTD_WRITEABLE;
printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
parts[i].name);
}
- /* copy oobinfo from master */
+ /* copy oobinfo from master */
memcpy(&slave->mtd.oobinfo, &master->oobinfo, sizeof(slave->mtd.oobinfo));
if(parts[i].mtdp)
return 0;
}
-int parse_mtd_partitions(struct mtd_info *master, const char **types,
+int parse_mtd_partitions(struct mtd_info *master, const char **types,
struct mtd_partition **pparts, unsigned long origin)
{
struct mtd_part_parser *parser;
int ret = 0;
-
+
for ( ; ret <= 0 && *types; types++) {
parser = get_partition_parser(*types);
#ifdef CONFIG_KMOD
}
ret = (*parser->parse_fn)(master, pparts, origin);
if (ret > 0) {
- printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",
+ printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",
ret, parser->name, master->name);
}
put_partition_parser(parser);
/* Linux driver for NAND Flash Translation Layer */
/* (c) 1999 Machine Vision Holdings, Inc. */
/* Author: David Woodhouse <dwmw2@infradead.org> */
-/* $Id: nftlcore.c,v 1.97 2004/11/16 18:28:59 dwmw2 Exp $ */
+/* $Id: nftlcore.c,v 1.98 2005/11/07 11:14:21 gleixner Exp $ */
/*
The contents of this file are distributed under the GNU General
if (nftl->mbd.size != nftl->heads * nftl->cylinders * nftl->sectors) {
/*
- Oh no we don't have
+ Oh no we don't have
mbd.size == heads * cylinders * sectors
*/
printk(KERN_WARNING "NFTL: cannot calculate a geometry to "
"match size of 0x%lx.\n", nftl->mbd.size);
printk(KERN_WARNING "NFTL: using C:%d H:%d S:%d "
"(== 0x%lx sects)\n",
- nftl->cylinders, nftl->heads , nftl->sectors,
+ nftl->cylinders, nftl->heads , nftl->sectors,
(long)nftl->cylinders * (long)nftl->heads *
(long)nftl->sectors );
}
if (!silly--) {
printk("Argh! No free blocks found! LastFreeEUN = %d, "
- "FirstEUN = %d\n", nftl->LastFreeEUN,
+ "FirstEUN = %d\n", nftl->LastFreeEUN,
le16_to_cpu(nftl->MediaHdr.FirstPhysicalEUN));
return 0xffff;
}
"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.
*/
if (block == 2) {
foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1;
if (foldmark == FOLD_MARK_IN_PROGRESS) {
- DEBUG(MTD_DEBUG_LEVEL1,
+ DEBUG(MTD_DEBUG_LEVEL1,
"Write Inhibited on EUN %d\n", thisEUN);
inplace = 0;
} else {
if (!BlockFreeFound[block])
BlockMap[block] = thisEUN;
else
- printk(KERN_WARNING
+ printk(KERN_WARNING
"SECTOR_USED found after SECTOR_FREE "
"in Virtual Unit Chain %d for block %d\n",
thisVUC, block);
if (!BlockFreeFound[block])
BlockMap[block] = BLOCK_NIL;
else
- printk(KERN_WARNING
+ printk(KERN_WARNING
"SECTOR_DELETED found after SECTOR_FREE "
"in Virtual Unit Chain %d for block %d\n",
thisVUC, block);
thisVUC);
return BLOCK_NIL;
}
-
+
thisEUN = nftl->ReplUnitTable[thisEUN];
}
if (inplace) {
/* We're being asked to be a fold-in-place. Check
that all blocks which actually have data associated
- with them (i.e. BlockMap[block] != BLOCK_NIL) are
+ with them (i.e. BlockMap[block] != BLOCK_NIL) are
either already present or SECTOR_FREE in the target
block. If not, we're going to have to fold out-of-place
anyway.
"block %d was %x lastEUN, "
"and is in EUN %d (%s) %d\n",
thisVUC, block, BlockLastState[block],
- BlockMap[block],
+ BlockMap[block],
BlockMap[block]== targetEUN ? "==" : "!=",
targetEUN);
inplace = 0;
inplace = 0;
}
}
-
+
if (!inplace) {
DEBUG(MTD_DEBUG_LEVEL1, "Cannot fold Virtual Unit Chain %d in place. "
"Trying out-of-place\n", thisVUC);
/* We need to find a targetEUN to fold into. */
targetEUN = NFTL_findfreeblock(nftl, 1);
if (targetEUN == BLOCK_NIL) {
- /* Ouch. Now we're screwed. We need to do a
+ /* Ouch. Now we're screwed. We need to do a
fold-in-place of another chain to make room
for this one. We need a better way of selecting
- which chain to fold, because makefreeblock will
+ which chain to fold, because makefreeblock will
only ask us to fold the same one again.
*/
printk(KERN_WARNING
chain by selecting the longer one */
oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
oob.u.c.unused = 0xffffffff;
- MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
+ MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
8, &retlen, (char *)&oob.u);
}
happen in case of media errors or deleted blocks) */
if (BlockMap[block] == BLOCK_NIL)
continue;
-
+
ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
- 512, &retlen, movebuf);
+ 512, &retlen, movebuf);
if (ret < 0) {
ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block])
+ (block * 512), 512, &retlen,
- movebuf);
- if (ret != -EIO)
+ movebuf);
+ if (ret != -EIO)
printk("Error went away on retry.\n");
}
memset(&oob, 0xff, sizeof(struct nftl_oob));
MTD_WRITEECC(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + (block * 512),
512, &retlen, movebuf, (char *)&oob, &nftl->oobinfo);
}
-
+
/* add the header so that it is now a valid chain */
oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum
= cpu_to_le16(thisVUC);
oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff;
-
- MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 8,
+
+ MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 8,
8, &retlen, (char *)&oob.u);
/* OK. We've moved the whole lot into the new block. Now we have to free the original blocks. */
- /* At this point, we have two different chains for this Virtual Unit, and no way to tell
+ /* At this point, we have two different chains for this Virtual Unit, and no way to tell
them apart. If we crash now, we get confused. However, both contain the same data, so we
shouldn't actually lose data in this case. It's just that when we load up on a medium which
has duplicate chains, we need to free one of the chains because it's not necessary any more.
thisEUN = nftl->EUNtable[thisVUC];
DEBUG(MTD_DEBUG_LEVEL1,"Want to erase\n");
- /* For each block in the old chain (except the targetEUN of course),
+ /* For each block in the old chain (except the targetEUN of course),
free it and make it available for future use */
while (thisEUN <= nftl->lastEUN && thisEUN != targetEUN) {
unsigned int EUNtmp;
}
thisEUN = EUNtmp;
}
-
+
/* Make this the new start of chain for thisVUC */
nftl->ReplUnitTable[targetEUN] = BLOCK_NIL;
nftl->EUNtable[thisVUC] = targetEUN;
static u16 NFTL_makefreeblock( struct NFTLrecord *nftl , 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
return NFTL_foldchain (nftl, LongestChain, pendingblock);
}
-/* NFTL_findwriteunit: Return the unit number into which we can write
+/* NFTL_findwriteunit: Return the unit number into which we can write
for this block. Make it available if it isn't already
*/
static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
a free space for the block in question.
*/
- /* This condition catches the 0x[7f]fff cases, as well as
+ /* This condition catches the 0x[7f]fff cases, as well as
being a sanity check for past-end-of-media access
*/
lastEUN = BLOCK_NIL;
MTD_READOOB(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
8, &retlen, (char *)&bci);
-
+
DEBUG(MTD_DEBUG_LEVEL2, "Status of block %d in EUN %d is %x\n",
block , writeEUN, le16_to_cpu(bci.Status));
break;
default:
// Invalid block. Don't use it any more. Must implement.
- break;
+ break;
}
-
- if (!silly--) {
+
+ if (!silly--) {
printk(KERN_WARNING
"Infinite loop in Virtual Unit Chain 0x%x\n",
thisVUC);
writeEUN = nftl->ReplUnitTable[writeEUN];
}
- /* 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. */
/* Try to find an already-free block */
/* First remember the start of this chain */
//u16 startEUN = nftl->EUNtable[thisVUC];
-
+
//printk("Write to VirtualUnitChain %d, calling makefreeblock()\n", thisVUC);
writeEUN = NFTL_makefreeblock(nftl, 0xffff);
if (writeEUN == BLOCK_NIL) {
- /* OK, we accept that the above comment is
+ /* OK, we accept that the above comment is
lying - there may have been free blocks
last time we called NFTL_findfreeblock(),
but they are reserved for when we're
}
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.
*/
printk(KERN_WARNING "Cannot make free space.\n");
return BLOCK_NIL;
- }
+ }
//printk("Restarting scan\n");
lastEUN = BLOCK_NIL;
continue;
}
/* We've found a free block. Insert it into the chain. */
-
+
if (lastEUN != BLOCK_NIL) {
thisVUC |= 0x8000; /* It's a replacement block */
} else {
static int __init init_nftl(void)
{
- printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.97 $, nftlmount.c %s\n", nftlmountrev);
+ printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.98 $, nftlmount.c %s\n", nftlmountrev);
return register_mtd_blktrans(&nftl_tr);
}
-/*
+/*
* NFTL mount code with extensive checks
*
- * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
+ * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
* Copyright (C) 2000 Netgem S.A.
*
- * $Id: nftlmount.c,v 1.40 2004/11/22 14:38:29 kalev Exp $
+ * $Id: nftlmount.c,v 1.41 2005/11/07 11:14:21 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 SECTORSIZE 512
-char nftlmountrev[]="$Revision: 1.40 $";
+char nftlmountrev[]="$Revision: 1.41 $";
/* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the
* various device information of the NFTL partition and Bad Unit Table. Update
struct NFTLMediaHeader *mh = &nftl->MediaHdr;
unsigned int i;
- /* Assume logical EraseSize == physical erasesize for starting the scan.
+ /* Assume logical EraseSize == physical erasesize for starting the scan.
We'll sort it out later if we find a MediaHeader which says otherwise */
/* Actually, we won't. The new DiskOnChip driver has already scanned
the MediaHeader and adjusted the virtual erasesize it presents in
if (retlen < 6 || memcmp(buf, "ANAND", 6)) {
/* ANAND\0 not found. Continue */
#if 0
- printk(KERN_DEBUG "ANAND header not found at 0x%x in mtd%d\n",
+ printk(KERN_DEBUG "ANAND header not found at 0x%x in mtd%d\n",
block * nftl->EraseSize, nftl->mbd.mtd->index);
-#endif
+#endif
continue;
}
*/
if (le16_to_cpu(h1.EraseMark | h1.EraseMark1) != ERASE_MARK) {
printk(KERN_NOTICE "ANAND header found at 0x%x in mtd%d, but erase mark not present (0x%04x,0x%04x instead)\n",
- block * nftl->EraseSize, nftl->mbd.mtd->index,
+ block * nftl->EraseSize, nftl->mbd.mtd->index,
le16_to_cpu(h1.EraseMark), le16_to_cpu(h1.EraseMark1));
continue;
}
nftl->nb_boot_blocks = le16_to_cpu(mh->FirstPhysicalEUN);
if ((nftl->nb_boot_blocks + 2) >= nftl->nb_blocks) {
printk(KERN_NOTICE "NFTL Media Header sanity check failed:\n");
- printk(KERN_NOTICE "nb_boot_blocks (%d) + 2 > nb_blocks (%d)\n",
+ printk(KERN_NOTICE "nb_boot_blocks (%d) + 2 > nb_blocks (%d)\n",
nftl->nb_boot_blocks, nftl->nb_blocks);
return -1;
}
nftl->numvunits, nftl->nb_blocks, nftl->nb_boot_blocks);
return -1;
}
-
+
nftl->mbd.size = nftl->numvunits * (nftl->EraseSize / SECTORSIZE);
/* If we're not using the last sectors in the device for some reason,
printk(KERN_NOTICE "NFTL: allocation of ReplUnitTable failed\n");
return -ENOMEM;
}
-
+
/* mark the bios blocks (blocks before NFTL MediaHeader) as reserved */
for (i = 0; i < nftl->nb_boot_blocks; i++)
nftl->ReplUnitTable[i] = BLOCK_RESERVED;
/* mark all remaining blocks as potentially containing data */
- for (; i < nftl->nb_blocks; i++) {
+ for (; i < nftl->nb_blocks; i++) {
nftl->ReplUnitTable[i] = BLOCK_NOTEXPLORED;
}
if (nftl->mbd.mtd->block_isbad(nftl->mbd.mtd, i * nftl->EraseSize))
nftl->ReplUnitTable[i] = BLOCK_RESERVED;
}
-
+
nftl->MediaUnit = block;
boot_record_count++;
-
+
} /* foreach (block) */
-
+
return boot_record_count?0:-1;
}
}
/* check_free_sector: check if a free sector is actually FREE, i.e. All 0xff in data and oob area */
-static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int len,
+static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int len,
int check_oob)
{
int i;
*
* Return: 0 when succeed, -1 on error.
*
- * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
+ * ToDo: 1. Is it neceressary to check_free_sector after erasing ??
*/
int NFTL_formatblock(struct NFTLrecord *nftl, int block)
{
/* verify that the sector is really free. If not, mark
as ignore */
if (memcmpb(&bci, 0xff, 8) != 0 ||
- check_free_sectors(nftl, block * nftl->EraseSize + i * SECTORSIZE,
+ check_free_sectors(nftl, block * nftl->EraseSize + i * SECTORSIZE,
SECTORSIZE, 0) != 0) {
printk("Incorrect free sector %d in block %d: "
"marking it as ignored\n",
size_t retlen;
/* check erase mark. */
- if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
+ if (MTD_READOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
&retlen, (char *)&h1) < 0)
return -1;
h1.EraseMark = cpu_to_le16(ERASE_MARK);
h1.EraseMark1 = cpu_to_le16(ERASE_MARK);
h1.WearInfo = cpu_to_le32(0);
- if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
+ if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
&retlen, (char *)&h1) < 0)
return -1;
} else {
for (;;) {
/* read the block header. If error, we format the chain */
- if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8, 8,
+ if (MTD_READOOB(s->mbd.mtd, block * s->EraseSize + 8, 8,
&retlen, (char *)&h0) < 0 ||
- MTD_READOOB(s->mbd.mtd, block * s->EraseSize + SECTORSIZE + 8, 8,
+ MTD_READOOB(s->mbd.mtd, block * s->EraseSize + SECTORSIZE + 8, 8,
&retlen, (char *)&h1) < 0) {
s->ReplUnitTable[block] = BLOCK_NIL;
do_format_chain = 1;
first_logical_block = logical_block;
} else {
if (logical_block != first_logical_block) {
- printk("Block %d: incorrect logical block: %d expected: %d\n",
+ printk("Block %d: incorrect logical block: %d expected: %d\n",
block, logical_block, first_logical_block);
/* the chain is incorrect : we must format it,
but we need to read it completly */
s->ReplUnitTable[block] = BLOCK_NIL;
break;
} else if (rep_block >= s->nb_blocks) {
- printk("Block %d: referencing invalid block %d\n",
+ printk("Block %d: referencing invalid block %d\n",
block, rep_block);
do_format_chain = 1;
s->ReplUnitTable[block] = BLOCK_NIL;
s->ReplUnitTable[block] = rep_block;
s->EUNtable[first_logical_block] = BLOCK_NIL;
} else {
- printk("Block %d: referencing block %d already in another chain\n",
+ printk("Block %d: referencing block %d already in another chain\n",
block, rep_block);
/* XXX: should handle correctly fold in progress chains */
do_format_chain = 1;
} else {
unsigned int first_block1, chain_to_format, chain_length1;
int fold_mark;
-
+
/* valid chain : get foldmark */
fold_mark = get_fold_mark(s, first_block);
if (fold_mark == 0) {
if (first_block1 != BLOCK_NIL) {
/* XXX: what to do if same length ? */
chain_length1 = calc_chain_length(s, first_block1);
- printk("Two chains at blocks %d (len=%d) and %d (len=%d)\n",
+ printk("Two chains at blocks %d (len=%d) and %d (len=%d)\n",
first_block1, chain_length1, first_block, chain_length);
-
+
if (chain_length >= chain_length1) {
chain_to_format = first_block1;
s->EUNtable[first_logical_block] = first_block;
/*
- * $Id: redboot.c,v 1.17 2004/11/22 11:33:56 ijc Exp $
+ * $Id: redboot.c,v 1.18 2005/11/07 11:14:21 gleixner Exp $
*
* Parse RedBoot-style Flash Image System (FIS) tables and
* produce a Linux partition array to match.
return 1;
}
-static int parse_redboot_partitions(struct mtd_info *master,
+static int parse_redboot_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
unsigned long fis_origin)
{
*
* Copyright (C) 2005 Sean Young <sean@mess.org>
*
- * $Id: rfd_ftl.c,v 1.4 2005/07/31 22:49:14 sean Exp $
+ * $Id: rfd_ftl.c,v 1.5 2005/11/07 11:14:21 gleixner Exp $
*
* This type of flash translation layer (FTL) is used by the Embedded BIOS
* by General Software. It is known as the Resident Flash Disk (RFD), see:
{
struct block *block = &part->blocks[block_no];
int i;
-
+
block->offset = part->block_size * block_no;
if (le16_to_cpu(part->header_cache[0]) != RFD_MAGIC) {
for (i=0; i<part->data_sectors_per_block; i++) {
u16 entry;
-
+
entry = le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i]);
if (entry == SECTOR_DELETED)
continue;
-
+
if (entry == SECTOR_FREE) {
block->free_sectors++;
continue;
if (entry == SECTOR_ZERO)
entry = 0;
-
+
if (entry >= part->sector_count) {
- printk(KERN_NOTICE PREFIX
+ printk(KERN_NOTICE PREFIX
"'%s': unit #%d: entry %d corrupt, "
"sector %d out of range\n",
part->mbd.mtd->name, block_no, i, entry);
}
if (part->sector_map[entry] != -1) {
- printk(KERN_NOTICE PREFIX
+ printk(KERN_NOTICE PREFIX
"'%s': more than one entry for sector %d\n",
part->mbd.mtd->name, entry);
part->errors = 1;
continue;
}
- part->sector_map[entry] = block->offset +
+ part->sector_map[entry] = block->offset +
(i + part->header_sectors_per_block) * SECTOR_SIZE;
block->used_sectors++;
return -ENOENT;
/* each erase block has three bytes header, followed by the map */
- part->header_sectors_per_block =
- ((HEADER_MAP_OFFSET + sectors_per_block) *
+ part->header_sectors_per_block =
+ ((HEADER_MAP_OFFSET + sectors_per_block) *
sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE;
- part->data_sectors_per_block = sectors_per_block -
+ part->data_sectors_per_block = sectors_per_block -
part->header_sectors_per_block;
- part->header_size = (HEADER_MAP_OFFSET +
+ part->header_size = (HEADER_MAP_OFFSET +
part->data_sectors_per_block) * sizeof(u16);
part->cylinders = (part->data_sectors_per_block *
if (!part->header_cache)
goto err;
- part->blocks = kcalloc(part->total_blocks, sizeof(struct block),
+ part->blocks = kcalloc(part->total_blocks, sizeof(struct block),
GFP_KERNEL);
if (!part->blocks)
goto err;
goto err;
}
- for (i=0; i<part->sector_count; i++)
+ for (i=0; i<part->sector_count; i++)
part->sector_map[i] = -1;
for (i=0, blocks_found=0; i<part->total_blocks; i++) {
- rc = part->mbd.mtd->read(part->mbd.mtd,
+ rc = part->mbd.mtd->read(part->mbd.mtd,
i * part->block_size, part->header_size,
&retlen, (u_char*)part->header_cache);
if (!rc && retlen != part->header_size)
rc = -EIO;
- if (rc)
+ if (rc)
goto err;
if (!build_block_map(part, i))
}
if (part->reserved_block == -1) {
- printk(KERN_NOTICE PREFIX "'%s': no empty erase unit found\n",
+ printk(KERN_NOTICE PREFIX "'%s': no empty erase unit found\n",
part->mbd.mtd->name);
part->errors = 1;
u_long addr;
size_t retlen;
int rc;
-
+
if (sector >= part->sector_count)
return -EIO;
}
} else
memset(buf, 0, SECTOR_SIZE);
-
+
return 0;
-}
+}
static void erase_callback(struct erase_info *erase)
{
if (erase->state != MTD_ERASE_DONE) {
printk(KERN_WARNING PREFIX "erase failed at 0x%x on '%s', "
- "state %d\n", erase->addr,
+ "state %d\n", erase->addr,
part->mbd.mtd->name, erase->state);
part->blocks[i].state = BLOCK_FAILED;
part->blocks[i].used_sectors = 0;
part->blocks[i].erases++;
- rc = part->mbd.mtd->write(part->mbd.mtd,
- part->blocks[i].offset, sizeof(magic), &retlen,
+ rc = part->mbd.mtd->write(part->mbd.mtd,
+ part->blocks[i].offset, sizeof(magic), &retlen,
(u_char*)&magic);
-
+
if (!rc && retlen != sizeof(magic))
rc = -EIO;
if (rc) {
printk(KERN_NOTICE PREFIX "'%s': unable to write RFD "
"header at 0x%lx\n",
- part->mbd.mtd->name,
+ part->mbd.mtd->name,
part->blocks[i].offset);
part->blocks[i].state = BLOCK_FAILED;
}
map = kmalloc(part->header_size, GFP_KERNEL);
if (!map)
goto err2;
-
- rc = part->mbd.mtd->read(part->mbd.mtd,
- part->blocks[block_no].offset, part->header_size,
+
+ rc = part->mbd.mtd->read(part->mbd.mtd,
+ part->blocks[block_no].offset, part->header_size,
&retlen, (u_char*)map);
-
+
if (!rc && retlen != part->header_size)
rc = -EIO;
if (rc) {
printk(KERN_NOTICE PREFIX "error reading '%s' at "
- "0x%lx\n", part->mbd.mtd->name,
+ "0x%lx\n", part->mbd.mtd->name,
part->blocks[block_no].offset);
goto err;
if (entry == SECTOR_FREE || entry == SECTOR_DELETED)
continue;
- if (entry == SECTOR_ZERO)
+ if (entry == SECTOR_ZERO)
entry = 0;
/* already warned about and ignored in build_block_map() */
- if (entry >= part->sector_count)
+ if (entry >= part->sector_count)
continue;
addr = part->blocks[block_no].offset +
}
rc = part->mbd.mtd->read(part->mbd.mtd, addr,
SECTOR_SIZE, &retlen, sector_data);
-
+
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
goto err;
}
-
+
rc = rfd_ftl_writesect((struct mtd_blktrans_dev*)part,
entry, sector_data);
-
- if (rc)
+
+ if (rc)
goto err;
}
return rc;
}
-static int reclaim_block(struct partition *part, u_long *old_sector)
+static int reclaim_block(struct partition *part, u_long *old_sector)
{
int block, best_block, score, old_sector_block;
int rc;
-
+
/* we have a race if sync doesn't exist */
if (part->mbd.mtd->sync)
part->mbd.mtd->sync(part->mbd.mtd);
* more removed sectors is more efficient (have to move
* less).
*/
- if (part->blocks[block].free_sectors)
+ if (part->blocks[block].free_sectors)
return 0;
this_score = part->blocks[block].used_sectors;
- if (block == old_sector_block)
+ if (block == old_sector_block)
this_score--;
else {
/* no point in moving a full block */
- if (part->blocks[block].used_sectors ==
+ if (part->blocks[block].used_sectors ==
part->data_sectors_per_block)
continue;
}
stop = block;
do {
- if (part->blocks[block].free_sectors &&
+ if (part->blocks[block].free_sectors &&
block != part->reserved_block)
return block;
}
}
- rc = part->mbd.mtd->read(part->mbd.mtd, part->blocks[block].offset,
+ rc = part->mbd.mtd->read(part->mbd.mtd, part->blocks[block].offset,
part->header_size, &retlen, (u_char*)part->header_cache);
if (!rc && retlen != part->header_size)
if (rc) {
printk(KERN_NOTICE PREFIX "'%s': unable to read header at "
- "0x%lx\n", part->mbd.mtd->name,
+ "0x%lx\n", part->mbd.mtd->name,
part->blocks[block].offset);
goto err;
}
err:
return rc;
-}
+}
static int mark_sector_deleted(struct partition *part, u_long old_addr)
{
u16 del = const_cpu_to_le16(SECTOR_DELETED);
block = old_addr / part->block_size;
- offset = (old_addr % part->block_size) / SECTOR_SIZE -
+ offset = (old_addr % part->block_size) / SECTOR_SIZE -
part->header_sectors_per_block;
addr = part->blocks[block].offset +
if (rc) {
printk(KERN_WARNING PREFIX "error writing '%s' at "
"0x%lx\n", part->mbd.mtd->name, addr);
- if (rc)
+ if (rc)
goto err;
}
if (block == part->current_block)
i = stop = part->data_sectors_per_block - block->free_sectors;
do {
- if (le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i])
+ if (le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i])
== SECTOR_FREE)
return i;
!part->blocks[part->current_block].free_sectors) {
rc = find_writeable_block(part, old_addr);
- if (rc)
+ if (rc)
goto err;
}
rc = -ENOSPC;
goto err;
}
-
- addr = (i + part->header_sectors_per_block) * SECTOR_SIZE +
+
+ addr = (i + part->header_sectors_per_block) * SECTOR_SIZE +
block->offset;
- rc = part->mbd.mtd->write(part->mbd.mtd,
+ rc = part->mbd.mtd->write(part->mbd.mtd,
addr, SECTOR_SIZE, &retlen, (u_char*)buf);
if (!rc && retlen != SECTOR_SIZE)
if (rc) {
printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
part->mbd.mtd->name, addr);
- if (rc)
+ if (rc)
goto err;
}
if (rc) {
printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
part->mbd.mtd->name, addr);
- if (rc)
+ if (rc)
goto err;
}
block->used_sectors++;
break;
}
- if (i == SECTOR_SIZE)
+ if (i == SECTOR_SIZE)
part->sector_map[sector] = -1;
if (old_addr != -1)
if (!add_mtd_blktrans_dev((void*)part))
return;
- }
+ }
kfree(part);
}
.major = RFD_FTL_MAJOR,
.part_bits = PART_BITS,
.readsect = rfd_ftl_readsect,
- .writesect = rfd_ftl_writesect,
+ .writesect = rfd_ftl_writesect,
.getgeo = rfd_ftl_getgeo,
.add_mtd = rfd_ftl_add_mtd,
.remove_dev = rfd_ftl_remove_dev,
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff