Some manual fixups for clashing kfree() cleanups etc.
*
* (C) 2000 Red Hat. GPL'd
*
- * $Id: cfi_cmdset_0001.c,v 1.178 2005/05/19 17:05:43 nico Exp $
+ * $Id: cfi_cmdset_0001.c,v 1.185 2005/11/07 11:14:22 gleixner Exp $
+ *
*
- *
* 10/10/2000 Nicolas Pitre <nico@cam.org>
* - completely revamped method functions so they are aware and
* independent of the flash geometry (buswidth, interleave, etc.)
static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
static int cfi_intelext_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+ static int cfi_intelext_writev(struct mtd_info *, const struct kvec *, unsigned long, loff_t, size_t *);
static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *);
static void cfi_intelext_sync (struct mtd_info *);
static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
static void cfi_tell_features(struct cfi_pri_intelext *extp)
{
int i;
+ printk(" Extended Query version %c.%c\n", extp->MajorVersion, extp->MinorVersion);
printk(" Feature/Command Support: %4.4X\n", extp->FeatureSupport);
printk(" - Chip Erase: %s\n", extp->FeatureSupport&1?"supported":"unsupported");
printk(" - Suspend Erase: %s\n", extp->FeatureSupport&2?"supported":"unsupported");
printk(" - Page-mode read: %s\n", extp->FeatureSupport&128?"supported":"unsupported");
printk(" - Synchronous read: %s\n", extp->FeatureSupport&256?"supported":"unsupported");
printk(" - Simultaneous operations: %s\n", extp->FeatureSupport&512?"supported":"unsupported");
- for (i=10; i<32; i++) {
- if (extp->FeatureSupport & (1<<i))
+ printk(" - Extended Flash Array: %s\n", extp->FeatureSupport&1024?"supported":"unsupported");
+ for (i=11; i<32; i++) {
+ if (extp->FeatureSupport & (1<<i))
printk(" - Unknown Bit %X: supported\n", i);
}
-
+
printk(" Supported functions after Suspend: %2.2X\n", extp->SuspendCmdSupport);
printk(" - Program after Erase Suspend: %s\n", extp->SuspendCmdSupport&1?"supported":"unsupported");
for (i=1; i<8; i++) {
if (extp->SuspendCmdSupport & (1<<i))
printk(" - Unknown Bit %X: supported\n", i);
}
-
+
printk(" Block Status Register Mask: %4.4X\n", extp->BlkStatusRegMask);
printk(" - Lock Bit Active: %s\n", extp->BlkStatusRegMask&1?"yes":"no");
- printk(" - Valid Bit Active: %s\n", extp->BlkStatusRegMask&2?"yes":"no");
- for (i=2; i<16; i++) {
+ printk(" - Lock-Down Bit Active: %s\n", extp->BlkStatusRegMask&2?"yes":"no");
+ for (i=2; i<3; i++) {
if (extp->BlkStatusRegMask & (1<<i))
printk(" - Unknown Bit %X Active: yes\n",i);
}
-
- printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n",
+ printk(" - EFA Lock Bit: %s\n", extp->BlkStatusRegMask&16?"yes":"no");
+ printk(" - EFA Lock-Down Bit: %s\n", extp->BlkStatusRegMask&32?"yes":"no");
+ for (i=6; i<16; i++) {
+ if (extp->BlkStatusRegMask & (1<<i))
+ printk(" - Unknown Bit %X Active: yes\n",i);
+ }
+
+ printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n",
extp->VccOptimal >> 4, extp->VccOptimal & 0xf);
if (extp->VppOptimal)
- printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n",
+ printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n",
extp->VppOptimal >> 4, extp->VppOptimal & 0xf);
}
#endif
#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- /* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
+ /* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
static void fixup_intel_strataflash(struct mtd_info *mtd, void* param)
{
struct map_info *map = mtd->priv;
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
-
+
cfi->cfiq->BufWriteTimeoutTyp = 0; /* Not supported */
cfi->cfiq->BufWriteTimeoutMax = 0; /* Not supported */
}
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
-
+
/* Note this is done after the region info is endian swapped */
cfi->cfiq->EraseRegionInfo[1] =
(cfi->cfiq->EraseRegionInfo[1] & 0xffff0000) | 0x3e;
if (cfi->cfiq->BufWriteTimeoutTyp) {
printk(KERN_INFO "Using buffer write method\n" );
mtd->write = cfi_intelext_write_buffers;
+ mtd->writev = cfi_intelext_writev;
}
}
static struct cfi_fixup cfi_fixup_table[] = {
#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
+ { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL },
#endif
#ifdef CMDSET0001_DISABLE_WRITE_SUSPEND
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_no_write_suspend, NULL },
if (!extp)
return NULL;
+ if (extp->MajorVersion != '1' ||
+ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
+ printk(KERN_ERR " Unknown Intel/Sharp Extended Query "
+ "version %c.%c.\n", extp->MajorVersion,
+ extp->MinorVersion);
+ kfree(extp);
+ return NULL;
+ }
+
/* Do some byteswapping if necessary */
extp->FeatureSupport = le32_to_cpu(extp->FeatureSupport);
extp->BlkStatusRegMask = le16_to_cpu(extp->BlkStatusRegMask);
extp->ProtRegAddr = le16_to_cpu(extp->ProtRegAddr);
- if (extp->MajorVersion == '1' && extp->MinorVersion == '3') {
+ if (extp->MajorVersion == '1' && extp->MinorVersion >= '3') {
unsigned int extra_size = 0;
int nb_parts, i;
sizeof(struct cfi_intelext_otpinfo);
/* Burst Read info */
- extra_size += 6;
+ extra_size += 2;
+ if (extp_size < sizeof(*extp) + extra_size)
+ goto need_more;
+ extra_size += extp->extra[extra_size-1];
/* Number of hardware-partitions */
extra_size += 1;
goto need_more;
nb_parts = extp->extra[extra_size - 1];
+ /* skip the sizeof(partregion) field in CFI 1.4 */
+ if (extp->MinorVersion >= '4')
+ extra_size += 2;
+
for (i = 0; i < nb_parts; i++) {
struct cfi_intelext_regioninfo *rinfo;
rinfo = (struct cfi_intelext_regioninfo *)&extp->extra[extra_size];
* sizeof(struct cfi_intelext_blockinfo);
}
+ if (extp->MinorVersion >= '4')
+ extra_size += sizeof(struct cfi_intelext_programming_regioninfo);
+
if (extp_size < sizeof(*extp) + extra_size) {
need_more:
extp_size = sizeof(*extp) + extra_size;
goto again;
}
}
-
+
return extp;
}
mtd->reboot_notifier.notifier_call = cfi_intelext_reboot;
if (cfi->cfi_mode == CFI_MODE_CFI) {
- /*
+ /*
* It's a real CFI chip, not one for which the probe
* routine faked a CFI structure. So we read the feature
* table from it.
}
/* Install our own private info structure */
- cfi->cmdset_priv = extp;
+ cfi->cmdset_priv = extp;
cfi_fixup(mtd, cfi_fixup_table);
#ifdef DEBUG_CFI_FEATURES
/* Tell the user about it in lots of lovely detail */
cfi_tell_features(extp);
- #endif
+ #endif
if(extp->SuspendCmdSupport & 1) {
printk(KERN_NOTICE "cfi_cmdset_0001: Erase suspend on write enabled\n");
cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp;
cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp;
cfi->chips[i].ref_point_counter = 0;
- }
+ }
map->fldrv = &cfi_intelext_chipdrv;
-
+
return cfi_intelext_setup(mtd);
}
mtd->size = devsize * cfi->numchips;
mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips;
- mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info)
+ mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info)
* mtd->numeraseregions, GFP_KERNEL);
- if (!mtd->eraseregions) {
+ if (!mtd->eraseregions) {
printk(KERN_ERR "Failed to allocate memory for MTD erase region info\n");
goto setup_err;
}
-
+
for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
unsigned long ernum, ersize;
ersize = ((cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff) * cfi->interleave;
}
for (i=0; i<mtd->numeraseregions;i++){
- printk(KERN_DEBUG "%d: offset=0x%x,size=0x%x,blocks=%d\n",
+ printk(KERN_DEBUG "erase region %d: offset=0x%x,size=0x%x,blocks=%d\n",
i,mtd->eraseregions[i].offset,
mtd->eraseregions[i].erasesize,
mtd->eraseregions[i].numblocks);
setup_err:
if(mtd) {
- if(mtd->eraseregions)
- kfree(mtd->eraseregions);
+ kfree(mtd->eraseregions);
kfree(mtd);
}
kfree(cfi->cmdset_priv);
* arrangement at this point. This can be rearranged in the future
* if someone feels motivated enough. --nico
*/
- if (extp && extp->MajorVersion == '1' && extp->MinorVersion == '3'
+ if (extp && extp->MajorVersion == '1' && extp->MinorVersion >= '3'
&& extp->FeatureSupport & (1 << 9)) {
struct cfi_private *newcfi;
struct flchip *chip;
sizeof(struct cfi_intelext_otpinfo);
/* Burst Read info */
- offs += 6;
+ offs += extp->extra[offs+1]+2;
/* Number of partition regions */
numregions = extp->extra[offs];
offs += 1;
+ /* skip the sizeof(partregion) field in CFI 1.4 */
+ if (extp->MinorVersion >= '4')
+ offs += 2;
+
/* Number of hardware partitions */
numparts = 0;
for (i = 0; i < numregions; i++) {
sizeof(struct cfi_intelext_blockinfo);
}
+ /* Programming Region info */
+ if (extp->MinorVersion >= '4') {
+ struct cfi_intelext_programming_regioninfo *prinfo;
+ prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs];
+ MTD_PROGREGION_SIZE(mtd) = cfi->interleave << prinfo->ProgRegShift;
+ MTD_PROGREGION_CTRLMODE_VALID(mtd) = cfi->interleave * prinfo->ControlValid;
+ MTD_PROGREGION_CTRLMODE_INVALID(mtd) = cfi->interleave * prinfo->ControlInvalid;
+ mtd->flags |= MTD_PROGRAM_REGIONS;
+ printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d\n",
+ map->name, MTD_PROGREGION_SIZE(mtd),
+ MTD_PROGREGION_CTRLMODE_VALID(mtd),
+ MTD_PROGREGION_CTRLMODE_INVALID(mtd));
+ }
+
/*
* All functions below currently rely on all chips having
* the same geometry so we'll just assume that all hardware
break;
if (time_after(jiffies, timeo)) {
- printk(KERN_ERR "Waiting for chip to be ready timed out. Status %lx\n",
- status.x[0]);
+ printk(KERN_ERR "%s: Waiting for chip to be ready timed out. Status %lx\n",
+ map->name, status.x[0]);
return -EIO;
}
spin_unlock(chip->mutex);
/* Someone else might have been playing with it. */
goto retry;
}
-
+
case FL_READY:
case FL_CFI_QUERY:
case FL_JEDEC_QUERY:
map_write(map, CMD(0x70), adr);
chip->state = FL_ERASING;
chip->oldstate = FL_READY;
- printk(KERN_ERR "Chip not ready after erase "
- "suspended: status = 0x%lx\n", status.x[0]);
+ printk(KERN_ERR "%s: Chip not ready after erase "
+ "suspended: status = 0x%lx\n", map->name, status.x[0]);
return -EIO;
}
switch(chip->oldstate) {
case FL_ERASING:
chip->state = chip->oldstate;
- /* What if one interleaved chip has finished and the
+ /* What if one interleaved chip has finished and the
other hasn't? The old code would leave the finished
- one in READY mode. That's bad, and caused -EROFS
+ one in READY mode. That's bad, and caused -EROFS
errors to be returned from do_erase_oneblock because
that's the only bit it checked for at the time.
- As the state machine appears to explicitly allow
+ As the state machine appears to explicitly allow
sending the 0x70 (Read Status) command to an erasing
- chip and expecting it to be ignored, that's what we
+ chip and expecting it to be ignored, that's what we
do. */
map_write(map, CMD(0xd0), adr);
map_write(map, CMD(0x70), adr);
DISABLE_VPP(map);
break;
default:
- printk(KERN_ERR "put_chip() called with oldstate %d!!\n", chip->oldstate);
+ printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", map->name, chip->oldstate);
}
wake_up(&chip->wq);
}
adr += chip->start;
- /* Ensure cmd read/writes are aligned. */
- cmd_addr = adr & ~(map_bankwidth(map)-1);
+ /* Ensure cmd read/writes are aligned. */
+ cmd_addr = adr & ~(map_bankwidth(map)-1);
spin_lock(chip->mutex);
if (!map->virt || (from + len > mtd->size))
return -EINVAL;
-
+
*mtdbuf = (void *)map->virt + from;
*retlen = 0;
*retlen += thislen;
len -= thislen;
-
+
ofs = 0;
chipnum++;
}
if(chip->ref_point_counter == 0)
chip->state = FL_READY;
} else
- printk(KERN_ERR "Warning: unpoint called on non pointed region\n"); /* Should this give an error? */
+ printk(KERN_ERR "%s: Warning: unpoint called on non pointed region\n", map->name); /* Should this give an error? */
put_chip(map, chip, chip->start);
spin_unlock(chip->mutex);
adr += chip->start;
- /* Ensure cmd read/writes are aligned. */
- cmd_addr = adr & ~(map_bankwidth(map)-1);
+ /* Ensure cmd read/writes are aligned. */
+ cmd_addr = adr & ~(map_bankwidth(map)-1);
spin_lock(chip->mutex);
ret = get_chip(map, chip, cmd_addr, FL_READY);
*retlen += thislen;
len -= thislen;
buf += thislen;
-
+
ofs = 0;
chipnum++;
}
adr += chip->start;
- /* Let's determine this according to the interleave only once */
+ /* Let's determine those according to the interleave only once */
status_OK = CMD(0x80);
switch (mode) {
- case FL_WRITING: write_cmd = CMD(0x40); break;
- case FL_OTP_WRITE: write_cmd = CMD(0xc0); break;
- default: return -EINVAL;
+ case FL_WRITING:
+ write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41);
+ break;
+ case FL_OTP_WRITE:
+ write_cmd = CMD(0xc0);
+ break;
+ default:
+ return -EINVAL;
}
spin_lock(chip->mutex);
status = map_read(map, adr);
if (map_word_andequal(map, status, status_OK, status_OK))
break;
-
+
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
+ map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
xip_enable(map, chip, adr);
- printk(KERN_ERR "waiting for chip to be ready timed out in word write\n");
+ printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
ret = -EIO;
goto out;
}
if (!z) {
chip->word_write_time--;
if (!chip->word_write_time)
- chip->word_write_time++;
+ chip->word_write_time = 1;
}
- if (z > 1)
+ if (z > 1)
chip->word_write_time++;
/* Done and happy. */
chip->state = FL_STATUS;
- /* check for lock bit */
- if (map_word_bitsset(map, status, CMD(0x02))) {
- /* clear status */
+ /* check for errors */
+ if (map_word_bitsset(map, status, CMD(0x1a))) {
+ unsigned long chipstatus = MERGESTATUS(status);
+
+ /* reset status */
map_write(map, CMD(0x50), adr);
- /* put back into read status register mode */
map_write(map, CMD(0x70), adr);
- ret = -EROFS;
+ xip_enable(map, chip, adr);
+
+ if (chipstatus & 0x02) {
+ ret = -EROFS;
+ } else if (chipstatus & 0x08) {
+ printk(KERN_ERR "%s: word write error (bad VPP)\n", map->name);
+ ret = -EIO;
+ } else {
+ printk(KERN_ERR "%s: word write error (status 0x%lx)\n", map->name, chipstatus);
+ ret = -EINVAL;
+ }
+
+ goto out;
}
xip_enable(map, chip, adr);
out: put_chip(map, chip, adr);
spin_unlock(chip->mutex);
-
return ret;
}
ret = do_write_oneword(map, &cfi->chips[chipnum],
bus_ofs, datum, FL_WRITING);
- if (ret)
+ if (ret)
return ret;
len -= n;
(*retlen) += n;
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
}
}
-
+
while(len >= map_bankwidth(map)) {
map_word datum = map_word_load(map, buf);
len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, datum, FL_WRITING);
- if (ret)
+ if (ret)
return ret;
-
+
(*retlen) += len;
}
}
- static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
- unsigned long adr, const u_char *buf, int len)
+ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
+ unsigned long adr, const struct kvec **pvec,
+ unsigned long *pvec_seek, int len)
{
struct cfi_private *cfi = map->fldrv_priv;
- map_word status, status_OK;
+ map_word status, status_OK, write_cmd, datum;
unsigned long cmd_adr, timeo;
- int wbufsize, z, ret=0, bytes, words;
+ int wbufsize, z, ret=0, word_gap, words;
+ const struct kvec *vec;
+ unsigned long vec_seek;
wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
adr += chip->start;
cmd_adr = adr & ~(wbufsize-1);
-
+
/* Let's determine this according to the interleave only once */
status_OK = CMD(0x80);
+ write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9);
spin_lock(chip->mutex);
ret = get_chip(map, chip, cmd_adr, FL_WRITING);
xip_disable(map, chip, cmd_adr);
/* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set
- [...], the device will not accept any more Write to Buffer commands".
+ [...], the device will not accept any more Write to Buffer commands".
So we must check here and reset those bits if they're set. Otherwise
we're just pissing in the wind */
if (chip->state != FL_STATUS)
z = 0;
for (;;) {
- map_write(map, CMD(0xe8), cmd_adr);
+ map_write(map, write_cmd, cmd_adr);
status = map_read(map, cmd_adr);
if (map_word_andequal(map, status, status_OK, status_OK))
map_write(map, CMD(0x50), cmd_adr);
map_write(map, CMD(0x70), cmd_adr);
xip_enable(map, chip, cmd_adr);
- printk(KERN_ERR "Chip not ready for buffer write. status = %lx, Xstatus = %lx\n",
- status.x[0], Xstatus.x[0]);
+ printk(KERN_ERR "%s: Chip not ready for buffer write. status = %lx, Xstatus = %lx\n",
+ map->name, status.x[0], Xstatus.x[0]);
ret = -EIO;
goto out;
}
}
+ /* Figure out the number of words to write */
+ word_gap = (-adr & (map_bankwidth(map)-1));
+ words = (len - word_gap + map_bankwidth(map) - 1) / map_bankwidth(map);
+ if (!word_gap) {
+ words--;
+ } else {
+ word_gap = map_bankwidth(map) - word_gap;
+ adr -= word_gap;
+ datum = map_word_ff(map);
+ }
+
/* Write length of data to come */
- bytes = len & (map_bankwidth(map)-1);
- words = len / map_bankwidth(map);
- map_write(map, CMD(words - !bytes), cmd_adr );
+ map_write(map, CMD(words), cmd_adr );
/* Write data */
- z = 0;
- while(z < words * map_bankwidth(map)) {
- map_word datum = map_word_load(map, buf);
- map_write(map, datum, adr+z);
+ vec = *pvec;
+ vec_seek = *pvec_seek;
+ do {
+ int n = map_bankwidth(map) - word_gap;
+ if (n > vec->iov_len - vec_seek)
+ n = vec->iov_len - vec_seek;
+ if (n > len)
+ n = len;
- z += map_bankwidth(map);
- buf += map_bankwidth(map);
- }
+ if (!word_gap && len < map_bankwidth(map))
+ datum = map_word_ff(map);
- if (bytes) {
- map_word datum;
+ datum = map_word_load_partial(map, datum,
+ vec->iov_base + vec_seek,
+ word_gap, n);
- datum = map_word_ff(map);
- datum = map_word_load_partial(map, datum, buf, 0, bytes);
- map_write(map, datum, adr+z);
- }
+ len -= n;
+ word_gap += n;
+ if (!len || word_gap == map_bankwidth(map)) {
+ map_write(map, datum, adr);
+ adr += map_bankwidth(map);
+ word_gap = 0;
+ }
+
+ vec_seek += n;
+ if (vec_seek == vec->iov_len) {
+ vec++;
+ vec_seek = 0;
+ }
+ } while (len);
+ *pvec = vec;
+ *pvec_seek = vec_seek;
/* GO GO GO */
map_write(map, CMD(0xd0), cmd_adr);
chip->state = FL_WRITING;
- INVALIDATE_CACHE_UDELAY(map, chip,
+ INVALIDATE_CACHE_UDELAY(map, chip,
cmd_adr, len,
chip->buffer_write_time);
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
+ map_write(map, CMD(0x70), cmd_adr);
chip->state = FL_STATUS;
xip_enable(map, chip, cmd_adr);
- printk(KERN_ERR "waiting for chip to be ready timed out in bufwrite\n");
+ printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name);
ret = -EIO;
goto out;
}
-
+
/* Latency issues. Drop the lock, wait a while and retry */
z++;
UDELAY(map, chip, cmd_adr, 1);
if (!z) {
chip->buffer_write_time--;
if (!chip->buffer_write_time)
- chip->buffer_write_time++;
+ chip->buffer_write_time = 1;
}
- if (z > 1)
+ if (z > 1)
chip->buffer_write_time++;
/* Done and happy. */
chip->state = FL_STATUS;
- /* check for lock bit */
- if (map_word_bitsset(map, status, CMD(0x02))) {
- /* clear status */
+ /* check for errors */
+ if (map_word_bitsset(map, status, CMD(0x1a))) {
+ unsigned long chipstatus = MERGESTATUS(status);
+
+ /* reset status */
map_write(map, CMD(0x50), cmd_adr);
- /* put back into read status register mode */
- map_write(map, CMD(0x70), adr);
- ret = -EROFS;
+ map_write(map, CMD(0x70), cmd_adr);
+ xip_enable(map, chip, cmd_adr);
+
+ if (chipstatus & 0x02) {
+ ret = -EROFS;
+ } else if (chipstatus & 0x08) {
+ printk(KERN_ERR "%s: buffer write error (bad VPP)\n", map->name);
+ ret = -EIO;
+ } else {
+ printk(KERN_ERR "%s: buffer write error (status 0x%lx)\n", map->name, chipstatus);
+ ret = -EINVAL;
+ }
+
+ goto out;
}
xip_enable(map, chip, cmd_adr);
return ret;
}
- static int cfi_intelext_write_buffers (struct mtd_info *mtd, loff_t to,
- size_t len, size_t *retlen, const u_char *buf)
+ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t *retlen)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
int wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
int ret = 0;
int chipnum;
- unsigned long ofs;
+ unsigned long ofs, vec_seek, i;
+ size_t len = 0;
+
+ for (i = 0; i < count; i++)
+ len += vecs[i].iov_len;
*retlen = 0;
if (!len)
return 0;
chipnum = to >> cfi->chipshift;
- ofs = to - (chipnum << cfi->chipshift);
-
- /* If it's not bus-aligned, do the first word write */
- if (ofs & (map_bankwidth(map)-1)) {
- size_t local_len = (-ofs)&(map_bankwidth(map)-1);
- if (local_len > len)
- local_len = len;
- ret = cfi_intelext_write_words(mtd, to, local_len,
- retlen, buf);
- if (ret)
- return ret;
- ofs += local_len;
- buf += local_len;
- len -= local_len;
-
- if (ofs >> cfi->chipshift) {
- chipnum ++;
- ofs = 0;
- if (chipnum == cfi->numchips)
- return 0;
- }
- }
+ ofs = to - (chipnum << cfi->chipshift);
+ vec_seek = 0;
- while(len) {
+ do {
/* We must not cross write block boundaries */
int size = wbufsize - (ofs & (wbufsize-1));
if (size > len)
size = len;
- ret = do_write_buffer(map, &cfi->chips[chipnum],
- ofs, buf, size);
+ ret = do_write_buffer(map, &cfi->chips[chipnum],
+ ofs, &vecs, &vec_seek, size);
if (ret)
return ret;
ofs += size;
- buf += size;
(*retlen) += size;
len -= size;
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
}
- }
+ } while (len);
+
return 0;
}
+ static int cfi_intelext_write_buffers (struct mtd_info *mtd, loff_t to,
+ size_t len, size_t *retlen, const u_char *buf)
+ {
+ struct kvec vec;
+
+ vec.iov_base = (void *) buf;
+ vec.iov_len = len;
+
+ return cfi_intelext_writev(mtd, &vec, 1, to, retlen);
+ }
+
static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
unsigned long adr, int len, void *thunk)
{
status = map_read(map, adr);
if (map_word_andequal(map, status, status_OK, status_OK))
break;
-
+
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
- map_word Xstatus;
map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
- Xstatus = map_read(map, adr);
- /* Clear status bits */
- map_write(map, CMD(0x50), adr);
- map_write(map, CMD(0x70), adr);
xip_enable(map, chip, adr);
- printk(KERN_ERR "waiting for erase at %08lx to complete timed out. status = %lx, Xstatus = %lx.\n",
- adr, status.x[0], Xstatus.x[0]);
+ printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name);
ret = -EIO;
goto out;
}
-
+
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1000000/HZ);
}
chip->state = FL_STATUS;
status = map_read(map, adr);
- /* check for lock bit */
+ /* check for errors */
if (map_word_bitsset(map, status, CMD(0x3a))) {
- unsigned long chipstatus;
+ unsigned long chipstatus = MERGESTATUS(status);
/* Reset the error bits */
map_write(map, CMD(0x50), adr);
map_write(map, CMD(0x70), adr);
xip_enable(map, chip, adr);
- chipstatus = MERGESTATUS(status);
-
if ((chipstatus & 0x30) == 0x30) {
- printk(KERN_NOTICE "Chip reports improper command sequence: status 0x%lx\n", chipstatus);
- ret = -EIO;
+ printk(KERN_ERR "%s: block erase error: (bad command sequence, status 0x%lx)\n", map->name, chipstatus);
+ ret = -EINVAL;
} else if (chipstatus & 0x02) {
/* Protection bit set */
ret = -EROFS;
} else if (chipstatus & 0x8) {
/* Voltage */
- printk(KERN_WARNING "Chip reports voltage low on erase: status 0x%lx\n", chipstatus);
+ printk(KERN_ERR "%s: block erase error: (bad VPP)\n", map->name);
ret = -EIO;
- } else if (chipstatus & 0x20) {
- if (retries--) {
- printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
- timeo = jiffies + HZ;
- put_chip(map, chip, adr);
- spin_unlock(chip->mutex);
- goto retry;
- }
- printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%lx\n", adr, chipstatus);
+ } else if (chipstatus & 0x20 && retries--) {
+ printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
+ timeo = jiffies + HZ;
+ put_chip(map, chip, adr);
+ spin_unlock(chip->mutex);
+ goto retry;
+ } else {
+ printk(KERN_ERR "%s: block erase failed at 0x%08lx (status 0x%lx)\n", map->name, adr, chipstatus);
ret = -EIO;
}
- } else {
- xip_enable(map, chip, adr);
- ret = 0;
+
+ goto out;
}
+ xip_enable(map, chip, adr);
out: put_chip(map, chip, adr);
spin_unlock(chip->mutex);
return ret;
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
-
+
return 0;
}
if (!ret) {
chip->oldstate = chip->state;
chip->state = FL_SYNCING;
- /* No need to wake_up() on this state change -
+ /* No need to wake_up() on this state change -
* as the whole point is that nobody can do anything
* with the chip now anyway.
*/
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_SYNCING) {
chip->state = chip->oldstate;
chip->oldstate = FL_READY;
ENABLE_VPP(map);
xip_disable(map, chip, adr);
-
+
map_write(map, CMD(0x60), adr);
if (thunk == DO_XXLOCK_ONEBLOCK_LOCK) {
map_write(map, CMD(0x01), adr);
status = map_read(map, adr);
if (map_word_andequal(map, status, status_OK, status_OK))
break;
-
+
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
- map_word Xstatus;
map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
- Xstatus = map_read(map, adr);
xip_enable(map, chip, adr);
- printk(KERN_ERR "waiting for unlock to complete timed out. status = %lx, Xstatus = %lx.\n",
- status.x[0], Xstatus.x[0]);
+ printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name);
put_chip(map, chip, adr);
spin_unlock(chip->mutex);
return -EIO;
}
-
+
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1);
}
-
+
/* Done and happy. */
chip->state = FL_STATUS;
xip_enable(map, chip, adr);
ofs, len, 0);
#endif
- ret = cfi_varsize_frob(mtd, do_xxlock_oneblock,
+ ret = cfi_varsize_frob(mtd, do_xxlock_oneblock,
ofs, len, DO_XXLOCK_ONEBLOCK_LOCK);
-
+
#ifdef DEBUG_LOCK_BITS
printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
__FUNCTION__, ret);
ret = cfi_varsize_frob(mtd, do_xxlock_oneblock,
ofs, len, DO_XXLOCK_ONEBLOCK_UNLOCK);
-
+
#ifdef DEBUG_LOCK_BITS
printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
__FUNCTION__, ret);
- cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
+ cfi_varsize_frob(mtd, do_printlockstatus_oneblock,
ofs, len, 0);
#endif
-
+
return ret;
}
#ifdef CONFIG_MTD_OTP
- typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip,
+ typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip,
u_long data_offset, u_char *buf, u_int size,
u_long prot_offset, u_int groupno, u_int groupsize);
datum = map_word_load_partial(map, datum, buf, gap, n);
ret = do_write_oneword(map, chip, bus_ofs, datum, FL_OTP_WRITE);
- if (ret)
+ if (ret)
return ret;
offset += n;
NULL, do_otp_lock, 1);
}
- static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd,
+ static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd,
struct otp_info *buf, size_t len)
{
size_t retlen;
if (chip->oldstate == FL_READY) {
chip->oldstate = chip->state;
chip->state = FL_PM_SUSPENDED;
- /* No need to wake_up() on this state change -
+ /* No need to wake_up() on this state change -
* as the whole point is that nobody can do anything
* with the chip now anyway.
*/
if (ret) {
for (i--; i >=0; i--) {
chip = &cfi->chips[i];
-
+
spin_lock(chip->mutex);
-
+
if (chip->state == FL_PM_SUSPENDED) {
/* No need to force it into a known state here,
because we're returning failure, and it didn't
}
spin_unlock(chip->mutex);
}
- }
-
+ }
+
return ret;
}
struct flchip *chip;
for (i=0; i<cfi->numchips; i++) {
-
+
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
/* Go to known state. Chip may have been power cycled */
if (chip->state == FL_PM_SUSPENDED) {
map_write(map, CMD(0xFF), cfi->chips[i].start);
struct flchip *chip = &cfi->chips[i];
/* force the completion of any ongoing operation
- and switch to array mode so any bootloader in
+ and switch to array mode so any bootloader in
flash is accessible for soft reboot. */
spin_lock(chip->mutex);
ret = get_chip(map, chip, chip->start, FL_SYNCING);
kfree(mtd->eraseregions);
}
- static char im_name_1[]="cfi_cmdset_0001";
- static char im_name_3[]="cfi_cmdset_0003";
+ static char im_name_0001[] = "cfi_cmdset_0001";
+ static char im_name_0003[] = "cfi_cmdset_0003";
+ static char im_name_0200[] = "cfi_cmdset_0200";
static int __init cfi_intelext_init(void)
{
- inter_module_register(im_name_1, THIS_MODULE, &cfi_cmdset_0001);
- inter_module_register(im_name_3, THIS_MODULE, &cfi_cmdset_0001);
+ inter_module_register(im_name_0001, THIS_MODULE, &cfi_cmdset_0001);
+ inter_module_register(im_name_0003, THIS_MODULE, &cfi_cmdset_0001);
+ inter_module_register(im_name_0200, THIS_MODULE, &cfi_cmdset_0001);
return 0;
}
static void __exit cfi_intelext_exit(void)
{
- inter_module_unregister(im_name_1);
- inter_module_unregister(im_name_3);
+ inter_module_unregister(im_name_0001);
+ inter_module_unregister(im_name_0003);
+ inter_module_unregister(im_name_0200);
}
module_init(cfi_intelext_init);
*
* 4_by_16 work by Carolyn J. Smith
*
- * XIP support hooks by Vitaly Wool (based on code for Intel flash
+ * XIP support hooks by Vitaly Wool (based on code for Intel flash
* by Nicolas Pitre)
- *
+ *
* Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
*
* This code is GPL
*
- * $Id: cfi_cmdset_0002.c,v 1.118 2005/07/04 22:34:29 gleixner Exp $
+ * $Id: cfi_cmdset_0002.c,v 1.122 2005/11/07 11:14:22 gleixner Exp $
*
*/
};
printk(" Silicon revision: %d\n", extp->SiliconRevision >> 1);
- printk(" Address sensitive unlock: %s\n",
+ printk(" Address sensitive unlock: %s\n",
(extp->SiliconRevision & 1) ? "Not required" : "Required");
if (extp->EraseSuspend < ARRAY_SIZE(erase_suspend))
else
printk(" Page mode: %d word page\n", extp->PageMode << 2);
- printk(" Vpp Supply Minimum Program/Erase Voltage: %d.%d V\n",
+ printk(" Vpp Supply Minimum Program/Erase Voltage: %d.%d V\n",
extp->VppMin >> 4, extp->VppMin & 0xf);
- printk(" Vpp Supply Maximum Program/Erase Voltage: %d.%d V\n",
+ printk(" Vpp Supply Maximum Program/Erase Voltage: %d.%d V\n",
extp->VppMax >> 4, extp->VppMax & 0xf);
if (extp->TopBottom < ARRAY_SIZE(top_bottom))
((cfi->cfiq->EraseRegionInfo[0] & 0xffff) == 0)) {
mtd->erase = cfi_amdstd_erase_chip;
}
-
+
}
static struct cfi_fixup cfi_fixup_table[] = {
if (cfi->cfi_mode==CFI_MODE_CFI){
unsigned char bootloc;
- /*
+ /*
* It's a real CFI chip, not one for which the probe
* routine faked a CFI structure. So we read the feature
* table from it.
return NULL;
}
+ if (extp->MajorVersion != '1' ||
+ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
+ printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query "
+ "version %c.%c.\n", extp->MajorVersion,
+ extp->MinorVersion);
+ kfree(extp);
+ kfree(mtd);
+ return NULL;
+ }
+
/* Install our own private info structure */
- cfi->cmdset_priv = extp;
+ cfi->cmdset_priv = extp;
/* Apply cfi device specific fixups */
cfi_fixup(mtd, cfi_fixup_table);
#ifdef DEBUG_CFI_FEATURES
/* Tell the user about it in lots of lovely detail */
cfi_tell_features(extp);
- #endif
+ #endif
bootloc = extp->TopBottom;
if ((bootloc != 2) && (bootloc != 3)) {
if (bootloc == 3 && cfi->cfiq->NumEraseRegions > 1) {
printk(KERN_WARNING "%s: Swapping erase regions for broken CFI table.\n", map->name);
-
+
for (i=0; i<cfi->cfiq->NumEraseRegions / 2; i++) {
int j = (cfi->cfiq->NumEraseRegions-1)-i;
__u32 swap;
-
+
swap = cfi->cfiq->EraseRegionInfo[i];
cfi->cfiq->EraseRegionInfo[i] = cfi->cfiq->EraseRegionInfo[j];
cfi->cfiq->EraseRegionInfo[j] = swap;
cfi->addr_unlock2 = 0x2aa;
/* Modify the unlock address if we are in compatibility mode */
if ( /* x16 in x8 mode */
- ((cfi->device_type == CFI_DEVICETYPE_X8) &&
+ ((cfi->device_type == CFI_DEVICETYPE_X8) &&
(cfi->cfiq->InterfaceDesc == 2)) ||
/* x32 in x16 mode */
((cfi->device_type == CFI_DEVICETYPE_X16) &&
- (cfi->cfiq->InterfaceDesc == 4)))
+ (cfi->cfiq->InterfaceDesc == 4)))
{
cfi->addr_unlock1 = 0xaaa;
cfi->addr_unlock2 = 0x555;
cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp;
cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp;
cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp;
- }
-
+ }
+
map->fldrv = &cfi_amdstd_chipdrv;
-
+
return cfi_amdstd_setup(mtd);
}
unsigned long offset = 0;
int i,j;
- printk(KERN_NOTICE "number of %s chips: %d\n",
+ printk(KERN_NOTICE "number of %s chips: %d\n",
(cfi->cfi_mode == CFI_MODE_CFI)?"CFI":"JEDEC",cfi->numchips);
- /* Select the correct geometry setup */
+ /* Select the correct geometry setup */
mtd->size = devsize * cfi->numchips;
mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips;
mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info)
* mtd->numeraseregions, GFP_KERNEL);
- if (!mtd->eraseregions) {
+ if (!mtd->eraseregions) {
printk(KERN_WARNING "Failed to allocate memory for MTD erase region info\n");
goto setup_err;
}
-
+
for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
unsigned long ernum, ersize;
ersize = ((cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff) * cfi->interleave;
ernum = (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1;
-
+
if (mtd->erasesize < ersize) {
mtd->erasesize = ersize;
}
setup_err:
if(mtd) {
- if(mtd->eraseregions)
- kfree(mtd->eraseregions);
+ kfree(mtd->eraseregions);
kfree(mtd);
}
kfree(cfi->cmdset_priv);
oldd = map_read(map, addr);
curd = map_read(map, addr);
- return map_word_equal(map, oldd, curd) &&
+ return map_word_equal(map, oldd, curd) &&
map_word_equal(map, curd, expected);
}
/* Someone else might have been playing with it. */
goto retry;
}
-
+
case FL_READY:
case FL_CFI_QUERY:
case FL_JEDEC_QUERY:
printk(KERN_ERR "MTD %s(): chip not ready after erase suspend\n", __func__);
return -EIO;
}
-
+
spin_unlock(chip->mutex);
cfi_udelay(1);
spin_lock(chip->mutex);
* When a delay is required for the flash operation to complete, the
* xip_udelay() function is polling for both the given timeout and pending
* (but still masked) hardware interrupts. Whenever there is an interrupt
- * pending then the flash erase operation is suspended, array mode restored
+ * pending then the flash erase operation is suspended, array mode restored
* and interrupts unmasked. Task scheduling might also happen at that
* point. The CPU eventually returns from the interrupt or the call to
* schedule() and the suspended flash operation is resumed for the remaining
((chip->state == FL_ERASING && (extp->EraseSuspend & 2))) &&
(cfi_interleave_is_1(cfi) || chip->oldstate == FL_READY)) {
/*
- * Let's suspend the erase operation when supported.
- * Note that we currently don't try to suspend
- * interleaved chips if there is already another
+ * Let's suspend the erase operation when supported.
+ * Note that we currently don't try to suspend
+ * interleaved chips if there is already another
* operation suspended (imagine what happens
* when one chip was already done with the current
* operation while another chip suspended it, then
adr += chip->start;
- /* Ensure cmd read/writes are aligned. */
- cmd_addr = adr & ~(map_bankwidth(map)-1);
+ /* Ensure cmd read/writes are aligned. */
+ cmd_addr = adr & ~(map_bankwidth(map)-1);
spin_lock(chip->mutex);
ret = get_chip(map, chip, cmd_addr, FL_READY);
#endif
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock(chip->mutex);
schedule();
timeo = jiffies + HZ;
goto retry;
- }
+ }
adr += chip->start;
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x88, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
-
+
map_copy_from(map, buf, adr, len);
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x90, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x00, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
-
+
wake_up(&chip->wq);
spin_unlock(chip->mutex);
chip->word_write_time);
/* See comment above for timeout value. */
- timeo = jiffies + uWriteTimeout;
+ timeo = jiffies + uWriteTimeout;
for (;;) {
if (chip->state != FL_WRITING) {
/* Someone's suspended the write. Sleep */
continue;
}
- if (chip_ready(map, adr))
- break;
-
- if (time_after(jiffies, timeo)) {
+ if (time_after(jiffies, timeo) && !chip_ready(map, adr)){
xip_enable(map, chip, adr);
printk(KERN_WARNING "MTD %s(): software timeout\n", __func__);
xip_disable(map, chip, adr);
- break;
+ break;
}
+ if (chip_ready(map, adr))
+ break;
+
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1);
}
map_write( map, CMD(0xF0), chip->start );
/* FIXME - should have reset delay before continuing */
- if (++retry_cnt <= MAX_WORD_RETRIES)
+ if (++retry_cnt <= MAX_WORD_RETRIES)
goto retry;
ret = -EIO;
/* Number of bytes to copy from buffer */
n = min_t(int, len, map_bankwidth(map)-i);
-
+
tmp_buf = map_word_load_partial(map, tmp_buf, buf, i, n);
- ret = do_write_oneword(map, &cfi->chips[chipnum],
+ ret = do_write_oneword(map, &cfi->chips[chipnum],
bus_ofs, tmp_buf);
- if (ret)
+ if (ret)
return ret;
-
+
ofs += n;
buf += n;
(*retlen) += n;
len -= n;
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
}
}
-
+
/* We are now aligned, write as much as possible */
while(len >= map_bankwidth(map)) {
map_word datum;
len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
spin_unlock(cfi->chips[chipnum].mutex);
tmp_buf = map_word_load_partial(map, tmp_buf, buf, 0, len);
-
- ret = do_write_oneword(map, &cfi->chips[chipnum],
+
+ ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, tmp_buf);
- if (ret)
+ if (ret)
return ret;
-
+
(*retlen) += len;
}
* FIXME: interleaved mode not tested, and probably not supported!
*/
static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
- unsigned long adr, const u_char *buf,
+ unsigned long adr, const u_char *buf,
int len)
{
struct cfi_private *cfi = map->fldrv_priv;
XIP_INVAL_CACHED_RANGE(map, adr, len);
ENABLE_VPP(map);
xip_disable(map, chip, cmd_adr);
-
+
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
//cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
adr, map_bankwidth(map),
chip->word_write_time);
- timeo = jiffies + uWriteTimeout;
-
+ timeo = jiffies + uWriteTimeout;
+
for (;;) {
if (chip->state != FL_WRITING) {
/* Someone's suspended the write. Sleep */
continue;
}
+ if (time_after(jiffies, timeo) && !chip_ready(map, adr))
+ break;
+
if (chip_ready(map, adr)) {
xip_enable(map, chip, adr);
goto op_done;
}
-
- if( time_after(jiffies, timeo))
- break;
/* Latency issues. Drop the lock, wait a while and retry */
UDELAY(map, chip, adr, 1);
if (size % map_bankwidth(map))
size -= size % map_bankwidth(map);
- ret = do_write_buffer(map, &cfi->chips[chipnum],
+ ret = do_write_buffer(map, &cfi->chips[chipnum],
ofs, buf, size);
if (ret)
return ret;
len -= size;
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
-
+
return 0;
}
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
-
+
return 0;
}
case FL_JEDEC_QUERY:
chip->oldstate = chip->state;
chip->state = FL_SYNCING;
- /* No need to wake_up() on this state change -
+ /* No need to wake_up() on this state change -
* as the whole point is that nobody can do anything
* with the chip now anyway.
*/
default:
/* Not an idle state */
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock(chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
-
+
goto retry;
}
}
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_SYNCING) {
chip->state = chip->oldstate;
wake_up(&chip->wq);
case FL_JEDEC_QUERY:
chip->oldstate = chip->state;
chip->state = FL_PM_SUSPENDED;
- /* No need to wake_up() on this state change -
+ /* No need to wake_up() on this state change -
* as the whole point is that nobody can do anything
* with the chip now anyway.
*/
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_PM_SUSPENDED) {
chip->state = chip->oldstate;
wake_up(&chip->wq);
spin_unlock(chip->mutex);
}
}
-
+
return ret;
}
struct flchip *chip;
for (i=0; i<cfi->numchips; i++) {
-
+
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_PM_SUSPENDED) {
chip->state = FL_READY;
map_write(map, CMD(0xF0), chip->start);
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
+
kfree(cfi->cmdset_priv);
kfree(cfi->cfiq);
kfree(cfi);
/*
- * $Id: blkmtd.c,v 1.24 2004/11/16 18:29:01 dwmw2 Exp $
+ * $Id: blkmtd.c,v 1.27 2005/11/07 11:14:24 gleixner Exp $
*
* blkmtd.c - use a block device as a fake MTD
*
/* Default erase size in K, always make it a multiple of PAGE_SIZE */
#define CONFIG_MTD_BLKDEV_ERASESIZE (128 << 10) /* 128KiB */
- #define VERSION "$Revision: 1.24 $"
+ #define VERSION "$Revision: 1.27 $"
/* Info for the block device */
struct blkmtd_dev {
unlock_page(page);
page_cache_release(page);
} while (bvec >= bio->bi_io_vec);
-
+
complete((struct completion*)bio->bi_private);
return 0;
}
unlock_page(page);
return 0;
}
-
+
ClearPageUptodate(page);
ClearPageError(page);
{
DEBUG(2, "blkmtd: free_device() dev = %p\n", dev);
if(dev) {
- if(dev->mtd_info.eraseregions)
- kfree(dev->mtd_info.eraseregions);
- if(dev->mtd_info.name)
- kfree(dev->mtd_info.name);
-
+ kfree(dev->mtd_info.eraseregions);
+ kfree(dev->mtd_info.name);
if(dev->blkdev) {
invalidate_inode_pages(dev->blkdev->bd_inode->i_mapping);
close_bdev_excl(dev->blkdev);
dev->mtd_info.erasesize >> 10,
readonly ? "(read-only)" : "");
}
-
+
return dev;
devinit_err:
- /*
+ /*
* 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 );
}
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;
}
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);
}
"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 1.16 2004/11/22 13:50:53 kalev 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: 1.16 $";
+ char inftlmountrev[]="$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)
{
/* 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_ERR "INFTL: Out of memory.\n");
+ 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) {
/*
* amd76xrom.c
*
* Normal mappings of chips in physical memory
- * $Id: amd76xrom.c,v 1.20 2005/03/18 14:04:35 gleixner Exp $
+ * $Id: amd76xrom.c,v 1.21 2005/11/07 11:14:26 gleixner Exp $
*/
#include <linux/module.h>
list_del(&map->list);
kfree(map);
}
- if (window->rsrc.parent)
+ if (window->rsrc.parent)
release_resource(&window->rsrc);
if (window->virt) {
window->phys = 0xffff0000; /* 64KiB */
}
window->size = 0xffffffffUL - window->phys + 1UL;
-
+
/*
* Try to reserve the window mem region. If this fails then
* it is likely due to a fragment of the window being
/* Enable writes through the rom window */
pci_read_config_byte(pdev, 0x40, &byte);
pci_write_config_byte(pdev, 0x40, byte | 1);
-
+
/* FIXME handle registers 0x80 - 0x8C the bios region locks */
/* For write accesses caches are useless */
MOD_NAME, map->map.phys);
/* There is no generic VPP support */
- for(map->map.bankwidth = 32; map->map.bankwidth;
+ for(map->map.bankwidth = 32; map->map.bankwidth;
map->map.bankwidth >>= 1)
{
char **probe_type;
for(i = 0; i < cfi->numchips; i++) {
cfi->chips[i].start += offset;
}
-
+
/* Now that the mtd devices is complete claim and export it */
map->mtd->owner = THIS_MODULE;
if (add_mtd_device(map->mtd)) {
out:
/* Free any left over map structures */
- if (map) {
- kfree(map);
- }
+ kfree(map);
/* See if I have any map structures */
if (list_empty(&window->maps)) {
amd76xrom_cleanup(window);
}
static struct pci_device_id amd76xrom_pci_tbl[] = {
- { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410,
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410,
PCI_ANY_ID, PCI_ANY_ID, },
- { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7440,
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7440,
PCI_ANY_ID, PCI_ANY_ID, },
{ PCI_VENDOR_ID_AMD, 0x7468 }, /* amd8111 support */
{ 0, }
* 20-Sep-2004 BJD Initial version
* 17-Jan-2005 BJD Add whole device if no partitions found
*
- * $Id: bast-flash.c,v 1.2 2005/01/18 11:13:47 bjd Exp $
+ * $Id: bast-flash.c,v 1.5 2005/11/07 11:14:26 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
local_irq_save(flags);
val = __raw_readb(BAST_VA_CTRL3);
-
+
if (to)
val |= BAST_CPLD_CTRL3_ROMWEN;
else
dev_set_drvdata(dev, NULL);
- if (info == NULL)
+ if (info == NULL)
return 0;
if (info->map.virt != NULL)
map_destroy(info->mtd);
}
- if (info->partitions)
- kfree(info->partitions);
+ kfree(info->partitions);
if (info->area) {
release_resource(info->area);
kfree(info->area);
}
-
+
kfree(info);
return 0;
info->map.phys = res->start;
info->map.size = res->end - res->start + 1;
- info->map.name = dev->bus_id;
+ info->map.name = dev->bus_id;
info->map.bankwidth = 2;
-
+
if (info->map.size > AREA_MAXSIZE)
info->map.size = AREA_MAXSIZE;
pr_debug("%s: area %08lx, size %ld\n", __FUNCTION__,
info->map.phys, info->map.size);
-
+
info->area = request_mem_region(res->start, info->map.size,
pdev->name);
if (info->area == NULL) {
err = -EIO;
goto exit_error;
}
-
+
simple_map_init(&info->map);
/* enable the write to the flash area */
err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0);
if (err > 0) {
err = add_mtd_partitions(info->mtd, info->partitions, err);
- if (err)
+ if (err)
printk(KERN_ERR PFX "cannot add/parse partitions\n");
} else {
err = add_mtd_device(info->mtd);
static struct device_driver bast_flash_driver = {
.name = "bast-nor",
+ .owner = THIS_MODULE,
.bus = &platform_bus_type,
.probe = bast_flash_probe,
.remove = bast_flash_remove,
* ichxrom.c
*
* Normal mappings of chips in physical memory
- * $Id: ichxrom.c,v 1.18 2005/07/07 10:26:20 dwmw2 Exp $
+ * $Id: ichxrom.c,v 1.19 2005/11/07 11:14:27 gleixner Exp $
*/
#include <linux/module.h>
* you can only really attach a FWH to an ICHX there
* a number of simplifications you can make.
*
- * Also you can page firmware hubs if an 8MB window isn't enough
+ * Also you can page firmware hubs if an 8MB window isn't enough
* but don't currently handle that case either.
*/
window->pdev = pdev;
window->phys = 0xfff00000;
}
else if ((byte & 0x80) == 0x80) {
- window->phys = 0xfff80000;
+ window->phys = 0xfff80000;
}
if (window->phys == 0) {
* in a factory setting. So in-place programming
* needs to use a different method.
*/
- for(map->map.bankwidth = 32; map->map.bankwidth;
+ for(map->map.bankwidth = 32; map->map.bankwidth;
map->map.bankwidth >>= 1)
{
char **probe_type;
for(i = 0; i < cfi->numchips; i++) {
cfi->chips[i].start += offset;
}
-
+
/* Now that the mtd devices is complete claim and export it */
map->mtd->owner = THIS_MODULE;
if (add_mtd_device(map->mtd)) {
out:
/* Free any left over map structures */
- if (map) {
- kfree(map);
- }
+ kfree(map);
+
/* See if I have any map structures */
if (list_empty(&window->maps)) {
ichxrom_cleanup(window);
}
static struct pci_device_id ichxrom_pci_tbl[] __devinitdata = {
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
PCI_ANY_ID, PCI_ANY_ID, },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
PCI_ANY_ID, PCI_ANY_ID, },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
PCI_ANY_ID, PCI_ANY_ID, },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0,
PCI_ANY_ID, PCI_ANY_ID, },
/*======================================================================
drivers/mtd/maps/integrator-flash.c: ARM Integrator flash map driver
-
+
Copyright (C) 2000 ARM Limited
Copyright (C) 2003 Deep Blue Solutions Ltd.
-
+
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: integrator-flash.c,v 1.18 2004/11/01 13:26:15 rmk Exp $
+ $Id: integrator-flash.c,v 1.20 2005/11/07 11:14:27 gleixner Exp $
======================================================================*/
del_mtd_partitions(info->mtd);
map_destroy(info->mtd);
}
- if (info->parts)
- kfree(info->parts);
+ kfree(info->parts);
no_device:
iounmap(base);
del_mtd_partitions(info->mtd);
map_destroy(info->mtd);
}
- if (info->parts)
- kfree(info->parts);
+ kfree(info->parts);
iounmap(info->map.virt);
release_resource(info->res);
/*
* Flash memory access on iPAQ Handhelds (either SA1100 or PXA250 based)
- *
+ *
* (C) 2000 Nicolas Pitre <nico@cam.org>
* (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com>
* (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes
- *
- * $Id: ipaq-flash.c,v 1.3 2004/11/04 13:24:15 gleixner Exp $
+ *
+ * $Id: ipaq-flash.c,v 1.5 2005/11/07 11:14:27 gleixner Exp $
*/
#include <linux/config.h>
#ifndef CONFIG_LAB
mask_flags: MTD_WRITEABLE, /* force read-only */
#endif
- },
+ },
{
name: "H3XXX root jffs2",
#ifndef CONFIG_LAB
static void h3xxx_set_vpp(struct map_info *map, int vpp)
{
static int nest = 0;
-
+
spin_lock(&ipaq_vpp_lock);
if (vpp)
nest++;
SA1100_CS3_PHYS,
SA1100_CS4_PHYS,
SA1100_CS5_PHYS,
- #else
+ #else
PXA_CS0_PHYS,
PXA_CS1_PHYS,
PXA_CS2_PHYS,
/* Default flash bankwidth */
// ipaq_map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4;
-
+
if (machine_is_h1900())
{
/* For our intents, the h1900 is not a real iPAQ, so we special-case it. */
else
for(i=0; i<MAX_IPAQ_CS; i++)
ipaq_map[i].bankwidth = 4;
-
+
/*
* Static partition definition selection
*/
return -ENXIO;
} else
printk(KERN_NOTICE "iPAQ flash: found %d bytes\n", my_sub_mtd[i]->size);
-
+
/* do we really need this debugging? --joshua 20030703 */
// printk("my_sub_mtd[%d]=%p\n", i, my_sub_mtd[i]);
my_sub_mtd[i]->owner = THIS_MODULE;
#else
mymtd = my_sub_mtd[0];
- /*
+ /*
*In the very near future, command line partition parsing
* will use the device name as 'mtd-id' instead of a value
* passed to the parse_cmdline_partitions() routine. Since
- * the bootldr says 'ipaq', make sure it continues to work.
+ * the bootldr says 'ipaq', make sure it continues to work.
*/
mymtd->name = "ipaq";
*/
i = parse_mtd_partitions(mymtd, part_probes, &parsed_parts, 0);
-
+
if (i > 0) {
nb_parts = parsed_nr_parts = i;
parts = parsed_parts;
#endif
map_destroy(mymtd);
#ifdef CONFIG_MTD_CONCAT
- for(i=0; i<MAX_IPAQ_CS; i++)
+ for(i=0; i<MAX_IPAQ_CS; i++)
#else
- for(i=1; i<MAX_IPAQ_CS; i++)
- #endif
+ for(i=1; i<MAX_IPAQ_CS; i++)
+ #endif
{
if (my_sub_mtd[i])
map_destroy(my_sub_mtd[i]);
}
- if (parsed_parts)
- kfree(parsed_parts);
+ kfree(parsed_parts);
}
}
ipaq_map[0].phys = 0x0;
ipaq_map[0].virt = __ioremap(0x0, 0x04000000, 0, 1);
ipaq_map[0].bankwidth = 2;
-
+
printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
mymtd = do_map_probe("jedec_probe", &ipaq_map[0]);
if (!mymtd)
return -ENODEV;
add_mtd_device(mymtd);
printk(KERN_NOTICE "iPAQ flash: registered h1910 flash\n");
-
+
return 0;
}
/*
- * $Id: iq80310.c,v 1.20 2004/11/04 13:24:15 gleixner Exp $
+ * $Id: iq80310.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $
*
* Mapping for the Intel XScale IQ80310 evaluation board
*
* Author: Nicolas Pitre
* Copyright: (C) 2001 MontaVista Software Inc.
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
- if (parsed_parts)
- kfree(parsed_parts);
+ kfree(parsed_parts);
}
if (iq80310_map.virt)
iounmap((void *)iq80310_map.virt);
/*
- * $Id: ixp2000.c,v 1.6 2005/03/18 14:07:46 gleixner Exp $
+ * $Id: ixp2000.c,v 1.9 2005/11/07 11:14:27 gleixner Exp $
*
* drivers/mtd/maps/ixp2000.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
+ *
*/
#include <linux/module.h>
};
static inline unsigned long flash_bank_setup(struct map_info *map, unsigned long ofs)
- {
- unsigned long (*set_bank)(unsigned long) =
+ {
+ unsigned long (*set_bank)(unsigned long) =
(unsigned long(*)(unsigned long))map->map_priv_2;
return (set_bank ? set_bank(ofs) : ofs);
#ifdef __ARMEB__
/*
- * Rev A0 and A1 of IXP2400 silicon have a broken addressing unit which
- * causes the lower address bits to be XORed with 0x11 on 8 bit accesses
+ * Rev A0 and A1 of IXP2400 silicon have a broken addressing unit which
+ * causes the lower address bits to be XORed with 0x11 on 8 bit accesses
* and XORed with 0x10 on 16 bit accesses. See the spec update, erratum 44.
*/
static int erratum44_workaround = 0;
unsigned long from, ssize_t len)
{
from = flash_bank_setup(map, from);
- while(len--)
+ while(len--)
*(__u8 *) to++ = *(__u8 *)(map->map_priv_1 + from++);
}
if (info->map.map_priv_1)
iounmap((void *) info->map.map_priv_1);
- if (info->partitions) {
- kfree(info->partitions); }
+ kfree(info->partitions);
if (info->res) {
release_resource(info->res);
static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
struct platform_device *dev = to_platform_device(_dev);
struct ixp2000_flash_data *ixp_data = dev->dev.platform_data;
- struct flash_platform_data *plat;
+ struct flash_platform_data *plat;
struct ixp2000_flash_info *info;
unsigned long window_size;
int err = -1;
-
+
if (!ixp_data)
return -ENODEV;
return -ENODEV;
window_size = dev->resource->end - dev->resource->start + 1;
- dev_info(_dev, "Probe of IXP2000 flash(%d banks x %dMiB)\n",
+ dev_info(_dev, "Probe of IXP2000 flash(%d banks x %dMiB)\n",
ixp_data->nr_banks, ((u32)window_size >> 20));
if (plat->width != 1) {
if(!info) {
err = -ENOMEM;
goto Error;
- }
+ }
memzero(info, sizeof(struct ixp2000_flash_info));
dev_set_drvdata(&dev->dev, info);
* not attempt to do a direct access on us.
*/
info->map.phys = NO_XIP;
-
+
info->nr_banks = ixp_data->nr_banks;
info->map.size = ixp_data->nr_banks * window_size;
info->map.bankwidth = 1;
/*
* map_priv_2 is used to store a ptr to to the bank_setup routine
*/
- info->map.map_priv_2 = (void __iomem *) ixp_data->bank_setup;
+ info->map.map_priv_2 = (unsigned long) ixp_data->bank_setup;
info->map.name = dev->dev.bus_id;
info->map.read = ixp2000_flash_read8;
info->map.copy_from = ixp2000_flash_copy_from;
info->map.copy_to = ixp2000_flash_copy_to;
- info->res = request_mem_region(dev->resource->start,
- dev->resource->end - dev->resource->start + 1,
+ info->res = request_mem_region(dev->resource->start,
+ dev->resource->end - dev->resource->start + 1,
dev->dev.bus_id);
if (!info->res) {
dev_err(_dev, "Could not reserve memory region\n");
goto Error;
}
- info->map.map_priv_1 = ioremap(dev->resource->start,
+ info->map.map_priv_1 = (unsigned long) ioremap(dev->resource->start,
dev->resource->end - dev->resource->start + 1);
if (!info->map.map_priv_1) {
dev_err(_dev, "Failed to ioremap flash region\n");
/*
- * $Id: ixp4xx.c,v 1.7 2004/11/04 13:24:15 gleixner Exp $
+ * $Id: ixp4xx.c,v 1.12 2005/11/07 11:14:27 gleixner Exp $
*
* drivers/mtd/maps/ixp4xx.c
*
static map_word ixp4xx_read16(struct map_info *map, unsigned long ofs)
{
map_word val;
- val.x[0] = *(__u16 *) (map->map_priv_1 + ofs);
+ val.x[0] = le16_to_cpu(readw(map->virt + ofs));
return val;
}
{
int i;
u8 *dest = (u8 *) to;
- u16 *src = (u16 *) (map->map_priv_1 + from);
+ void __iomem *src = map->virt + from;
u16 data;
for (i = 0; i < (len / 2); i++) {
- data = src[i];
+ data = le16_to_cpu(readw(src + 2*i));
dest[i * 2] = BYTE0(data);
dest[i * 2 + 1] = BYTE1(data);
}
if (len & 1)
- dest[len - 1] = BYTE0(src[i]);
+ dest[len - 1] = BYTE0(le16_to_cpu(readw(src + 2*i)));
}
- /*
+ /*
* Unaligned writes are ignored, causing the 8-bit
* probe to fail and proceed to the 16-bit probe (which succeeds).
*/
static void ixp4xx_probe_write16(struct map_info *map, map_word d, unsigned long adr)
{
if (!(adr & 1))
- *(__u16 *) (map->map_priv_1 + adr) = d.x[0];
+ writew(cpu_to_le16(d.x[0]), map->virt + adr);
}
- /*
+ /*
* Fast write16 function without the probing check above
*/
static void ixp4xx_write16(struct map_info *map, map_word d, unsigned long adr)
{
- *(__u16 *) (map->map_priv_1 + adr) = d.x[0];
+ writew(cpu_to_le16(d.x[0]), map->virt + adr);
}
struct ixp4xx_flash_info {
struct platform_device *dev = to_platform_device(_dev);
struct flash_platform_data *plat = dev->dev.platform_data;
struct ixp4xx_flash_info *info = dev_get_drvdata(&dev->dev);
- map_word d;
dev_set_drvdata(&dev->dev, NULL);
if(!info)
return 0;
- /*
- * This is required for a soft reboot to work.
- */
- d.x[0] = 0xff;
- ixp4xx_write16(&info->map, d, 0x55 * 0x2);
-
if (info->mtd) {
del_mtd_partitions(info->mtd);
map_destroy(info->mtd);
}
- if (info->map.map_priv_1)
- iounmap((void *) info->map.map_priv_1);
+ if (info->map.virt)
+ iounmap(info->map.virt);
- if (info->partitions)
- kfree(info->partitions);
+ kfree(info->partitions);
if (info->res) {
release_resource(info->res);
if (plat->exit)
plat->exit();
- /* Disable flash write */
- *IXP4XX_EXP_CS0 &= ~IXP4XX_FLASH_WRITABLE;
-
return 0;
}
if(!info) {
err = -ENOMEM;
goto Error;
- }
+ }
memzero(info, sizeof(struct ixp4xx_flash_info));
dev_set_drvdata(&dev->dev, info);
- /*
- * Enable flash write
- * TODO: Move this out to board specific code
- */
- *IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
-
/*
* Tell the MTD layer we're not 1:1 mapped so that it does
* not attempt to do a direct access on us.
info->map.write = ixp4xx_probe_write16,
info->map.copy_from = ixp4xx_copy_from,
- info->res = request_mem_region(dev->resource->start,
- dev->resource->end - dev->resource->start + 1,
+ info->res = request_mem_region(dev->resource->start,
+ dev->resource->end - dev->resource->start + 1,
"IXP4XXFlash");
if (!info->res) {
printk(KERN_ERR "IXP4XXFlash: Could not reserve memory region\n");
goto Error;
}
- info->map.map_priv_1 = ioremap(dev->resource->start,
- dev->resource->end - dev->resource->start + 1);
- if (!info->map.map_priv_1) {
+ info->map.virt = ioremap(dev->resource->start,
+ dev->resource->end - dev->resource->start + 1);
+ if (!info->map.virt) {
printk(KERN_ERR "IXP4XXFlash: Failed to ioremap region\n");
err = -EIO;
goto Error;
goto Error;
}
info->mtd->owner = THIS_MODULE;
-
+
/* Use the fast version */
info->map.write = ixp4xx_write16,
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MTD map driver for Intel IXP4xx systems");
MODULE_AUTHOR("Deepak Saxena");
-
/*
- * $Id: lubbock-flash.c,v 1.19 2004/11/04 13:24:15 gleixner Exp $
+ * $Id: lubbock-flash.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $
*
* Map driver for the Lubbock developer platform.
*
* Author: Nicolas Pitre
* Copyright: (C) 2001 MontaVista Software Inc.
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
int flashboot = (LUB_CONF_SWITCHES & 1);
int ret = 0, i;
- lubbock_maps[0].bankwidth = lubbock_maps[1].bankwidth =
+ lubbock_maps[0].bankwidth = lubbock_maps[1].bankwidth =
(BOOT_DEF & 1) ? 2 : 4;
/* Compensate for the nROMBT switch which swaps the flash banks */
simple_map_init(&lubbock_maps[i]);
printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
- lubbock_maps[i].name, lubbock_maps[i].phys,
+ lubbock_maps[i].name, lubbock_maps[i].phys,
lubbock_maps[i].bankwidth * 8);
mymtds[i] = do_map_probe("cfi_probe", &lubbock_maps[i]);
-
+
if (!mymtds[i]) {
iounmap((void *)lubbock_maps[i].virt);
if (lubbock_maps[i].cached)
if (!mymtds[0] && !mymtds[1])
return ret;
-
+
for (i = 0; i < 2; i++) {
if (!mymtds[i]) {
printk(KERN_WARNING "%s is absent. Skipping\n", lubbock_maps[i].name);
if (nr_parsed_parts[i] || !i)
del_mtd_partitions(mymtds[i]);
else
- del_mtd_device(mymtds[i]);
+ del_mtd_device(mymtds[i]);
map_destroy(mymtds[i]);
iounmap((void *)lubbock_maps[i].virt);
if (lubbock_maps[i].cached)
iounmap(lubbock_maps[i].cached);
- if (parsed_parts[i])
- kfree(parsed_parts[i]);
+ kfree(parsed_parts[i]);
}
}
*
* (C) 2002 MontVista Software, Inc.
*
- * $Id: omap-toto-flash.c,v 1.3 2004/09/16 23:27:13 gleixner Exp $
+ * $Id: omap-toto-flash.c,v 1.5 2005/11/07 11:14:27 gleixner Exp $
*/
#include <linux/config.h>
.virt = (void __iomem *)OMAP_TOTO_FLASH_BASE,
};
-
+
static struct mtd_partition toto_flash_partitions[] = {
{
.name = "BootLoader",
.name = "EnvArea", /* bottom 64KiB for env vars */
.size = MTDPART_SIZ_FULL,
.offset = MTDPART_OFS_APPEND,
- }
+ }
};
static struct mtd_partition *parsed_parts;
static struct mtd_info *flash_mtd;
-
- static int __init init_flash (void)
+
+ static int __init init_flash (void)
{
struct mtd_partition *parts;
int nb_parts = 0;
int parsed_nr_parts = 0;
const char *part_type;
-
+
/*
* Static partition definition selection
*/
flash_mtd = do_map_probe("jedec_probe", &omap_toto_map_flash);
if (!flash_mtd)
return -ENXIO;
-
+
if (parsed_nr_parts > 0) {
parts = parsed_parts;
nb_parts = parsed_nr_parts;
}
return 0;
}
-
- int __init omap_toto_mtd_init(void)
+
+ int __init omap_toto_mtd_init(void)
{
int status;
return status;
}
- static void __exit omap_toto_mtd_cleanup(void)
+ static void __exit omap_toto_mtd_cleanup(void)
{
if (flash_mtd) {
del_mtd_partitions(flash_mtd);
map_destroy(flash_mtd);
- if (parsed_parts)
- kfree(parsed_parts);
+ kfree(parsed_parts);
}
}
/*
* Flash memory access on SA11x0 based devices
- *
+ *
* (C) 2000 Nicolas Pitre <nico@cam.org>
- *
- * $Id: sa1100-flash.c,v 1.47 2004/11/01 13:44:36 rmk Exp $
+ *
+ * $Id: sa1100-flash.c,v 1.51 2005/11/07 11:14:28 gleixner Exp $
*/
#include <linux/config.h>
#include <linux/module.h>
#endif
}
- if (info->parts)
- kfree(info->parts);
+ kfree(info->parts);
for (i = info->num_subdev - 1; i >= 0; i--)
sa1100_destroy_subdev(&info->subdev[i]);
- /* $Id: sun_uflash.c,v 1.11 2004/11/04 13:24:15 gleixner Exp $
+ /* $Id: sun_uflash.c,v 1.13 2005/11/07 11:14:28 gleixner Exp $
*
* sun_uflash - Driver implementation for user-programmable flash
* present on many Sun Microsystems SME boardsets.
iTmp = prom_getproperty(
edev->prom_node, "reg", (void *)regs, sizeof(regs));
if ((iTmp % sizeof(regs[0])) != 0) {
- printk("%s: Strange reg property size %d\n",
+ printk("%s: Strange reg property size %d\n",
UFLASH_DEVNAME, iTmp);
return -ENODEV;
}
* can work on supporting it.
*/
printk("%s: unsupported device at 0x%lx (%d regs): " \
- "email ebrower@usa.net\n",
+ "email ebrower@usa.net\n",
UFLASH_DEVNAME, edev->resource[0].start, nregs);
return -ENODEV;
}
printk("%s: unable to kmalloc new device\n", UFLASH_DEVNAME);
return(-ENOMEM);
}
-
+
/* copy defaults and tweak parameters */
memcpy(&pdev->map, &uflash_map_templ, sizeof(uflash_map_templ));
pdev->map.size = regs[0].reg_size;
list_for_each(udevlist, &device_list) {
udev = list_entry(udevlist, struct uflash_dev, list);
- DEBUG(2, "%s: removing device %s\n",
+ DEBUG(2, "%s: removing device %s\n",
UFLASH_DEVNAME, udev->name);
if(0 != udev->mtd) {
iounmap(udev->map.virt);
udev->map.virt = NULL;
}
- if(0 != udev->name) {
- kfree(udev->name);
- }
+ kfree(udev->name);
kfree(udev);
- }
+ }
}
module_init(uflash_init);
/*
- * Handle mapping of the flash memory access routines
+ * Handle mapping of the flash memory access routines
* on TQM8xxL based devices.
*
- * $Id: tqm8xxl.c,v 1.13 2004/10/20 22:21:53 dwmw2 Exp $
+ * $Id: tqm8xxl.c,v 1.15 2005/11/07 11:14:28 gleixner Exp $
*
* based on rpxlite.c
*
* Copyright(C) 2001 Kirk Lee <kirk@hpc.ee.ntu.edu.tw>
*
* This code is GPLed
- *
+ *
*/
/*
* 2MiB 512Kx16 2MiB 0
* 4MiB 1Mx16 4MiB 0
* 8MiB 1Mx16 4MiB 4MiB
- * Thus, we choose CONFIG_MTD_CFI_I2 & CONFIG_MTD_CFI_B4 at
+ * Thus, we choose CONFIG_MTD_CFI_I2 & CONFIG_MTD_CFI_B4 at
* kernel configuration.
*/
#include <linux/config.h>
* Here are partition information for all known TQM8xxL series devices.
* See include/linux/mtd/partitions.h for definition of the mtd_partition
* structure.
- *
+ *
* The *_max_flash_size is the maximum possible mapped flash size which
- * is not necessarily the actual flash size. It must correspond to the
+ * is not necessarily the actual flash size. It must correspond to the
* value specified in the mapping definition defined by the
* "struct map_desc *_io_desc" for the corresponding machine.
*/
for (idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
if(mtd_size >= flash_size)
break;
-
+
printk(KERN_INFO "%s: chip probing count %d\n", __FUNCTION__, idx);
-
+
map_banks[idx] = (struct map_info *)kmalloc(sizeof(struct map_info), GFP_KERNEL);
if(map_banks[idx] == NULL) {
ret = -ENOMEM;
mtd_size += mtd_banks[idx]->size;
num_banks++;
- printk(KERN_INFO "%s: bank%d, name:%s, size:%dbytes \n", __FUNCTION__, num_banks,
+ printk(KERN_INFO "%s: bank%d, name:%s, size:%dbytes \n", __FUNCTION__, num_banks,
mtd_banks[idx]->name, mtd_banks[idx]->size);
}
}
} else {
printk(KERN_NOTICE "TQM flash%d: Using %s partition definition\n",
idx, part_banks[idx].type);
- add_mtd_partitions(mtd_banks[idx], part_banks[idx].mtd_part,
+ add_mtd_partitions(mtd_banks[idx], part_banks[idx].mtd_part,
part_banks[idx].nums);
}
}
error_mem:
for(idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
if(map_banks[idx] != NULL) {
- if(map_banks[idx]->name != NULL) {
- kfree(map_banks[idx]->name);
- map_banks[idx]->name = NULL;
- }
+ kfree(map_banks[idx]->name);
+ map_banks[idx]->name = NULL;
kfree(map_banks[idx]);
map_banks[idx] = NULL;
}
* This is the generic MTD driver for NAND flash devices. It should be
* capable of working with almost all NAND chips currently available.
* Basic support for AG-AND chips is provided.
- *
+ *
* Additional technical information is available on
* http://www.linux-mtd.infradead.org/tech/nand.html
- *
+ *
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
* 2002 Thomas Gleixner (tglx@linutronix.de)
*
- * 02-08-2004 tglx: support for strange chips, which cannot auto increment
+ * 02-08-2004 tglx: support for strange chips, which cannot auto increment
* pages on read / read_oob
*
* 03-17-2004 tglx: Check ready before auto increment check. Simon Bayes
* Make reads over block boundaries work too
*
* 04-14-2004 tglx: first working version for 2k page size chips
- *
+ *
* 05-19-2004 tglx: Basic support for Renesas AG-AND chips
*
* 09-24-2004 tglx: add support for hardware controllers (e.g. ECC) shared
*
* 12-05-2004 dmarlin: add workaround for Renesas AG-AND chips "disturb" issue.
* Basically, any block not rewritten may lose data when surrounding blocks
- * are rewritten many times. JFFS2 ensures this doesn't happen for blocks
+ * are rewritten many times. JFFS2 ensures this doesn't happen for blocks
* it uses, but the Bad Block Table(s) may not be rewritten. To ensure they
* do not lose data, force them to be rewritten when some of the surrounding
- * blocks are erased. Rather than tracking a specific nearby block (which
- * could itself go bad), use a page address 'mask' to select several blocks
+ * blocks are erased. Rather than tracking a specific nearby block (which
+ * could itself go bad), use a page address 'mask' to select several blocks
* in the same area, and rewrite the BBT when any of them are erased.
*
- * 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas
+ * 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas
* AG-AND chips. If there was a sudden loss of power during an erase operation,
* a "device recovery" operation must be performed when power is restored
* to ensure correct operation.
*
- * 01-20-2005 dmarlin: added support for optional hardware specific callback routine to
+ * 01-20-2005 dmarlin: added support for optional hardware specific callback routine to
* perform extra error status checks on erase and write failures. This required
* adding a wrapper function for nand_read_ecc.
*
+ * 08-20-2005 vwool: suspend/resume added
+ *
* Credits:
- * David Woodhouse for adding multichip support
- *
+ * David Woodhouse for adding multichip support
+ *
* Aleph One Ltd. and Toby Churchill Ltd. for supporting the
* rework for 2K page size chips
*
* The AG-AND chips have nice features for speed improvement,
* which are not supported yet. Read / program 4 pages in one go.
*
- * $Id: nand_base.c,v 1.147 2005/07/15 07:18:06 gleixner Exp $
+ * $Id: nand_base.c,v 1.150 2005/09/15 13:58:48 vwool Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 24,
.eccpos = {
- 40, 41, 42, 43, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 54, 55,
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63},
.oobfree = { {2, 38} }
};
static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf,
struct nand_oobinfo *oobsel, int mode);
#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
- static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
+ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode);
#else
#define nand_verify_pages(...) (0)
#endif
-
- static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state);
+
+ static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state);
/**
* nand_release_device - [GENERIC] release chip
* @mtd: MTD device structure
- *
- * Deselect, release chip lock and wake up anyone waiting on the device
+ *
+ * Deselect, release chip lock and wake up anyone waiting on the device
*/
static void nand_release_device (struct mtd_info *mtd)
{
* nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip
* @mtd: MTD device structure
*
- * Default read function for 16bit buswith with
+ * Default read function for 16bit buswith with
* endianess conversion
*/
static u_char nand_read_byte16(struct mtd_info *mtd)
* nand_read_word - [DEFAULT] read one word from the chip
* @mtd: MTD device structure
*
- * Default read function for 16bit buswith without
+ * Default read function for 16bit buswith without
* endianess conversion
*/
static u16 nand_read_word(struct mtd_info *mtd)
* @mtd: MTD device structure
* @word: data word to write
*
- * Default write function for 16bit buswith without
+ * Default write function for 16bit buswith without
* endianess conversion
*/
static void nand_write_word(struct mtd_info *mtd, u16 word)
struct nand_chip *this = mtd->priv;
switch(chip) {
case -1:
- this->hwcontrol(mtd, NAND_CTL_CLRNCE);
+ this->hwcontrol(mtd, NAND_CTL_CLRNCE);
break;
case 0:
this->hwcontrol(mtd, NAND_CTL_SETNCE);
}
/**
- * nand_read_buf - [DEFAULT] read chip data into buffer
+ * nand_read_buf - [DEFAULT] read chip data into buffer
* @mtd: MTD device structure
* @buf: buffer to store date
* @len: number of bytes to read
}
/**
- * nand_verify_buf - [DEFAULT] Verify chip data against buffer
+ * nand_verify_buf - [DEFAULT] Verify chip data against buffer
* @mtd: MTD device structure
* @buf: buffer containing the data to compare
* @len: number of bytes to compare
struct nand_chip *this = mtd->priv;
u16 *p = (u16 *) buf;
len >>= 1;
-
+
for (i=0; i<len; i++)
writew(p[i], this->IO_ADDR_W);
-
+
}
/**
- * nand_read_buf16 - [DEFAULT] read chip data into buffer
+ * nand_read_buf16 - [DEFAULT] read chip data into buffer
* @mtd: MTD device structure
* @buf: buffer to store date
* @len: number of bytes to read
}
/**
- * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer
+ * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer
* @mtd: MTD device structure
* @buf: buffer containing the data to compare
* @len: number of bytes to compare
* @ofs: offset from device start
* @getchip: 0, if the chip is already selected
*
- * Check, if the block is bad.
+ * Check, if the block is bad.
*/
static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
{
/* Select the NAND device */
this->select_chip(mtd, chipnr);
- } else
- page = (int) ofs;
+ } else
+ page = (int) ofs;
if (this->options & NAND_BUSWIDTH_16) {
this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask);
bad = cpu_to_le16(this->read_word(mtd));
if (this->badblockpos & 0x1)
- bad >>= 1;
+ bad >>= 8;
if ((bad & 0xFF) != 0xff)
res = 1;
} else {
if (this->read_byte(mtd) != 0xff)
res = 1;
}
-
+
if (getchip) {
/* Deselect and wake up anyone waiting on the device */
nand_release_device(mtd);
- }
-
+ }
+
return res;
}
u_char buf[2] = {0, 0};
size_t retlen;
int block;
-
+
/* Get block number */
block = ((int) ofs) >> this->bbt_erase_shift;
if (this->bbt)
/* Do we have a flash based bad block table ? */
if (this->options & NAND_USE_FLASH_BBT)
return nand_update_bbt (mtd, ofs);
-
+
/* We write two bytes, so we dont have to mess with 16 bit access */
ofs += mtd->oobsize + (this->badblockpos & ~0x01);
return nand_write_oob (mtd, ofs , 2, &retlen, buf);
}
- /**
+ /**
* nand_check_wp - [GENERIC] check if the chip is write protected
* @mtd: MTD device structure
- * Check, if the device is write protected
+ * Check, if the device is write protected
*
- * The function expects, that the device is already selected
+ * The function expects, that the device is already selected
*/
static int nand_check_wp (struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
/* Check the WP bit */
this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
- return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
+ return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
}
/**
static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
{
struct nand_chip *this = mtd->priv;
-
+
if (!this->bbt)
return this->block_bad(mtd, ofs, getchip);
-
+
/* Return info from the table */
return nand_isbad_bbt (mtd, ofs, allowbbt);
}
- /*
+ /*
* Wait for the ready pin, after a command
* The timeout is catched later.
*/
if (this->dev_ready(mtd))
return;
touch_softlockup_watchdog();
- } while (time_before(jiffies, timeo));
+ } while (time_before(jiffies, timeo));
}
/**
/* Latch in address */
this->hwcontrol(mtd, NAND_CTL_CLRALE);
}
-
- /*
- * program and erase have their own busy handlers
+
+ /*
+ * program and erase have their own busy handlers
* status and sequential in needs no delay
*/
switch (command) {
-
+
case NAND_CMD_PAGEPROG:
case NAND_CMD_ERASE1:
case NAND_CMD_ERASE2:
return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (this->dev_ready)
break;
udelay(this->chip_delay);
this->hwcontrol(mtd, NAND_CTL_SETCLE);
while ( !(this->read_byte(mtd) & NAND_STATUS_READY));
return;
- /* This applies to read commands */
+ /* This applies to read commands */
default:
- /*
+ /*
* If we don't have access to the busy pin, we apply the given
* command delay
*/
if (!this->dev_ready) {
udelay (this->chip_delay);
return;
- }
+ }
}
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
column += mtd->oobblock;
command = NAND_CMD_READ0;
}
-
-
+
+
/* Begin command latch cycle */
this->hwcontrol(mtd, NAND_CTL_SETCLE);
/* Write out the command to the device. */
column >>= 1;
this->write_byte(mtd, column & 0xff);
this->write_byte(mtd, column >> 8);
- }
+ }
if (page_addr != -1) {
this->write_byte(mtd, (unsigned char) (page_addr & 0xff));
this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
/* Latch in address */
this->hwcontrol(mtd, NAND_CTL_CLRALE);
}
-
- /*
- * program and erase have their own busy handlers
+
+ /*
+ * program and erase have their own busy handlers
* status, sequential in, and deplete1 need no delay
*/
switch (command) {
-
+
case NAND_CMD_CACHEDPROG:
case NAND_CMD_PAGEPROG:
case NAND_CMD_ERASE1:
case NAND_CMD_DEPLETE1:
return;
- /*
+ /*
* read error status commands require only a short delay
*/
case NAND_CMD_STATUS_ERROR:
return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (this->dev_ready)
break;
udelay(this->chip_delay);
this->hwcontrol(mtd, NAND_CTL_SETCLE);
/* End command latch cycle */
this->hwcontrol(mtd, NAND_CTL_CLRCLE);
/* Fall through into ready check */
-
- /* This applies to read commands */
+
+ /* This applies to read commands */
default:
- /*
+ /*
* If we don't have access to the busy pin, we apply the given
* command delay
*/
if (!this->dev_ready) {
udelay (this->chip_delay);
return;
- }
+ }
}
/* Apply this short delay always to ensure that we do wait tWB in
* nand_get_device - [GENERIC] Get chip for selected access
* @this: the nand chip descriptor
* @mtd: MTD device structure
- * @new_state: the state which is requested
+ * @new_state: the state which is requested
*
* Get the device and lock it for exclusive access
*/
- static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state)
+ static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state)
{
struct nand_chip *active;
spinlock_t *lock;
if (active == this && this->state == FL_READY) {
this->state = new_state;
spin_unlock(lock);
- return;
+ return 0;
+ }
+ if (new_state == FL_PM_SUSPENDED) {
+ spin_unlock(lock);
+ return (this->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN;
}
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(wq, &wait);
* @state: state to select the max. timeout value
*
* Wait for command done. This applies to erase and program only
- * Erase can take up to 400ms and program up to 20ms according to
+ * Erase can take up to 400ms and program up to 20ms according to
* general NAND and SmartMedia specs
*
*/
unsigned long timeo = jiffies;
int status;
-
+
if (state == FL_ERASING)
timeo += (HZ * 400) / 1000;
else
if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1);
- else
+ else
this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
- while (time_before(jiffies, timeo)) {
+ while (time_before(jiffies, timeo)) {
/* Check, if we were interrupted */
if (this->state != state)
return 0;
if (this->dev_ready) {
if (this->dev_ready(mtd))
- break;
+ break;
} else {
if (this->read_byte(mtd) & NAND_STATUS_READY)
break;
*
* Cached programming is not supported yet.
*/
- static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page,
+ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page,
u_char *oob_buf, struct nand_oobinfo *oobsel, int cached)
{
int i, status;
int *oob_config = oobsel->eccpos;
int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
int eccbytes = 0;
-
+
/* FIXME: Enable cached programming */
cached = 0;
-
+
/* Send command to begin auto page programming */
this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page);
printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
this->write_buf(mtd, this->data_poi, mtd->oobblock);
break;
-
+
/* Software ecc 3/256, write all */
case NAND_ECC_SOFT:
for (; eccsteps; eccsteps--) {
}
break;
}
-
+
/* Write out OOB data */
if (this->options & NAND_HWECC_SYNDROME)
this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes);
- else
+ else
this->write_buf(mtd, oob_buf, mtd->oobsize);
/* Send command to actually program the data */
/* wait until cache is ready*/
// status = this->waitfunc (mtd, this, FL_CACHEDRPG);
}
- return 0;
+ return 0;
}
#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
* @oobmode: 1 = full buffer verify, 0 = ecc only
*
* The NAND device assumes that it is always writing to a cleanly erased page.
- * Hence, it performs its internal write verification only on bits that
+ * Hence, it performs its internal write verification only on bits that
* transitioned from 1 to 0. The device does NOT verify the whole page on a
- * byte by byte basis. It is possible that the page was not completely erased
- * or the page is becoming unusable due to wear. The read with ECC would catch
- * the error later when the ECC page check fails, but we would rather catch
+ * byte by byte basis. It is possible that the page was not completely erased
+ * or the page is becoming unusable due to wear. The read with ECC would catch
+ * the error later when the ECC page check fails, but we would rather catch
* it early in the page write stage. Better to write no data than invalid data.
*/
- static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
+ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages,
u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode)
{
int i, j, datidx = 0, oobofs = 0, res = -EIO;
int eccsteps = this->eccsteps;
- int hweccbytes;
+ int hweccbytes;
u_char oobdata[64];
hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0;
if (oobsel->useecc != MTD_NANDECC_OFF && !hweccbytes) {
int ecccnt = oobsel->eccbytes;
-
+
for (i = 0; i < ecccnt; i++) {
int idx = oobsel->eccpos[i];
if (oobdata[idx] != oob_buf[oobofs + idx] ) {
goto out;
}
}
- }
+ }
}
oobofs += mtd->oobsize - hweccbytes * eccsteps;
page++;
numpages--;
- /* Apply delay or wait for ready/busy pin
+ /* Apply delay or wait for ready/busy pin
* Do this before the AUTOINCR check, so no problems
* arise if a chip which does auto increment
* is marked as NOAUTOINCR by the board driver.
* Do this also before returning, so the chip is
* ready for the next command.
*/
- if (!this->dev_ready)
+ if (!this->dev_ready)
udelay (this->chip_delay);
else
nand_wait_ready(mtd);
/* All done, return happy */
if (!numpages)
return 0;
-
-
- /* Check, if the chip supports auto page increment */
+
+
+ /* Check, if the chip supports auto page increment */
if (!NAND_CANAUTOINCR(this))
this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
}
- /*
+ /*
* Terminate the read command. We come here in case of an error
* So we must issue a reset command.
*/
- out:
+ out:
this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1);
return res;
}
* NAND read with ECC
*/
int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * oob_buf,
+ size_t * retlen, u_char * buf, u_char * oob_buf,
struct nand_oobinfo *oobsel, int flags)
{
/* Autoplace of oob data ? Use the default placement scheme */
if (oobsel->useecc == MTD_NANDECC_AUTOPLACE)
oobsel = this->autooob;
-
+
eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
oob_config = oobsel->eccpos;
end = mtd->oobblock;
ecc = this->eccsize;
eccbytes = this->eccbytes;
-
+
if ((eccmode == NAND_ECC_NONE) || (this->options & NAND_HWECC_SYNDROME))
compareecc = 0;
oobreadlen = mtd->oobsize;
- if (this->options & NAND_HWECC_SYNDROME)
+ if (this->options & NAND_HWECC_SYNDROME)
oobreadlen -= oobsel->eccbytes;
/* Loop until all data read */
while (read < len) {
-
+
int aligned = (!col && (len - read) >= end);
- /*
+ /*
* If the read is not page aligned, we have to read into data buffer
* due to ecc, else we read into return buffer direct
*/
if (aligned)
data_poi = &buf[read];
- else
+ else
data_poi = this->data_buf;
-
- /* Check, if we have this page in the buffer
+
+ /* Check, if we have this page in the buffer
*
* FIXME: Make it work when we must provide oob data too,
* check the usage of data_buf oob field
if (sndcmd) {
this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
sndcmd = 0;
- }
+ }
/* get oob area, if we have no oob buffer from fs-driver */
if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE ||
oob_data = &this->data_buf[end];
eccsteps = this->eccsteps;
-
+
switch (eccmode) {
case NAND_ECC_NONE: { /* No ECC, Read in a page */
static unsigned long lastwhinge = 0;
this->read_buf(mtd, data_poi, end);
break;
}
-
+
case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */
this->read_buf(mtd, data_poi, end);
- for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc)
+ for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc)
this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
- break;
+ break;
default:
for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) {
* does the error correction on the fly */
ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]);
if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
- DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: "
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: "
"Failed ECC read, page 0x%08x on chip %d\n", page, chipnr);
ecc_failed++;
}
} else {
this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
- }
+ }
}
- break;
+ break;
}
/* read oobdata */
/* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */
if (!compareecc)
- goto readoob;
-
+ goto readoob;
+
/* Pick the ECC bytes out of the oob data */
for (j = 0; j < oobsel->eccbytes; j++)
ecc_code[j] = oob_data[oob_config[j]];
/* correct data, if neccecary */
for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) {
ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]);
-
+
/* Get next chunk of ecc bytes */
j += eccbytes;
-
- /* Check, if we have a fs supplied oob-buffer,
+
+ /* Check, if we have a fs supplied oob-buffer,
* This is the legacy mode. Used by YAFFS1
* Should go away some day
*/
- if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) {
+ if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) {
int *p = (int *)(&oob_data[mtd->oobsize]);
p[i] = ecc_status;
}
-
- if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
+
+ if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page);
ecc_failed++;
}
- }
+ }
readoob:
/* check, if we have a fs supplied oob-buffer */
}
readdata:
/* Partial page read, transfer data into fs buffer */
- if (!aligned) {
+ if (!aligned) {
for (j = col; j < end && read < len; j++)
buf[read++] = data_poi[j];
- this->pagebuf = realpage;
- } else
+ this->pagebuf = realpage;
+ } else
read += mtd->oobblock;
- /* Apply delay or wait for ready/busy pin
+ /* Apply delay or wait for ready/busy pin
* Do this before the AUTOINCR check, so no problems
* arise if a chip which does auto increment
* is marked as NOAUTOINCR by the board driver.
*/
- if (!this->dev_ready)
+ if (!this->dev_ready)
udelay (this->chip_delay);
else
nand_wait_ready(mtd);
-
+
if (read == len)
- break;
+ break;
/* For subsequent reads align to page boundary. */
col = 0;
this->select_chip(mtd, -1);
this->select_chip(mtd, chipnr);
}
- /* Check, if the chip supports auto page increment
- * or if we have hit a block boundary.
- */
+ /* Check, if the chip supports auto page increment
+ * or if we have hit a block boundary.
+ */
if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
- sndcmd = 1;
+ sndcmd = 1;
}
/* Deselect and wake up anyone waiting on the device */
/* Shift to get page */
page = (int)(from >> this->page_shift);
chipnr = (int)(from >> this->chip_shift);
-
+
/* Mask to get column */
col = from & (mtd->oobsize - 1);
/* Send the read command */
this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask);
- /*
+ /*
* Read the data, if we read more than one page
* oob data, let the device transfer the data !
*/
this->select_chip(mtd, -1);
this->select_chip(mtd, chipnr);
}
-
- /* Apply delay or wait for ready/busy pin
+
+ /* Apply delay or wait for ready/busy pin
* Do this before the AUTOINCR check, so no problems
* arise if a chip which does auto increment
* is marked as NOAUTOINCR by the board driver.
*/
- if (!this->dev_ready)
+ if (!this->dev_ready)
udelay (this->chip_delay);
else
nand_wait_ready(mtd);
- /* Check, if the chip supports auto page increment
- * or if we have hit a block boundary.
- */
+ /* Check, if the chip supports auto page increment
+ * or if we have hit a block boundary.
+ */
if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) {
/* For subsequent page reads set offset to 0 */
this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask);
nand_get_device (this, mtd , FL_READING);
this->select_chip (mtd, chip);
-
+
/* Add requested oob length */
len += ooblen;
-
+
while (len) {
if (sndcmd)
this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask);
- sndcmd = 0;
+ sndcmd = 0;
this->read_buf (mtd, &buf[cnt], pagesize);
len -= pagesize;
cnt += pagesize;
page++;
-
- if (!this->dev_ready)
+
+ if (!this->dev_ready)
udelay (this->chip_delay);
else
nand_wait_ready(mtd);
-
- /* Check, if the chip supports auto page increment */
+
+ /* Check, if the chip supports auto page increment */
if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
sndcmd = 1;
}
}
- /**
- * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer
+ /**
+ * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer
* @mtd: MTD device structure
* @fsbuf: buffer given by fs driver
* @oobsel: out of band selection structre
int i, len, ofs;
/* Zero copy fs supplied buffer */
- if (fsbuf && !autoplace)
+ if (fsbuf && !autoplace)
return fsbuf;
/* Check, if the buffer must be filled with ff again */
- if (this->oobdirty) {
- memset (this->oob_buf, 0xff,
+ if (this->oobdirty) {
+ memset (this->oob_buf, 0xff,
mtd->oobsize << (this->phys_erase_shift - this->page_shift));
this->oobdirty = 0;
- }
-
+ }
+
/* If we have no autoplacement or no fs buffer use the internal one */
if (!autoplace || !fsbuf)
return this->oob_buf;
-
+
/* Walk through the pages and place the data */
this->oobdirty = 1;
ofs = 0;
{
return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL));
}
-
+
/**
* nand_write_ecc - [MTD Interface] NAND write with ECC
* @mtd: MTD device structure
return -EINVAL;
}
- /* reject writes, which are not page aligned */
+ /* reject writes, which are not page aligned */
if (NOTALIGNED (to) || NOTALIGNED(len)) {
printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
return -EINVAL;
goto out;
/* if oobsel is NULL, use chip defaults */
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
-
+ if (oobsel == NULL)
+ oobsel = &mtd->oobinfo;
+
/* Autoplace of oob data ? Use the default placement scheme */
if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) {
oobsel = this->autooob;
autoplace = 1;
- }
+ }
if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
autoplace = 1;
totalpages = len >> this->page_shift;
page = (int) (to >> this->page_shift);
/* Invalidate the page cache, if we write to the cached page */
- if (page <= this->pagebuf && this->pagebuf < (page + totalpages))
+ if (page <= this->pagebuf && this->pagebuf < (page + totalpages))
this->pagebuf = -1;
-
+
/* Set it relative to chip */
page &= this->pagemask;
startpage = page;
if (ret) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret);
goto out;
- }
+ }
/* Next oob page */
oob += mtd->oobsize;
/* Update written bytes count */
written += mtd->oobblock;
- if (written == len)
+ if (written == len)
goto cmp;
-
+
/* Increment page address */
page++;
if (!(page & (ppblock - 1))){
int ofs;
this->data_poi = bufstart;
- ret = nand_verify_pages (mtd, this, startpage,
+ ret = nand_verify_pages (mtd, this, startpage,
page - startpage,
oobbuf, oobsel, chipnr, (eccbuf != NULL));
if (ret) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
goto out;
- }
+ }
*retlen = written;
ofs = autoplace ? mtd->oobavail : mtd->oobsize;
numpages = min (totalpages, ppblock);
page &= this->pagemask;
startpage = page;
- oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel,
+ oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel,
autoplace, numpages);
+ oob = 0;
/* Check, if we cross a chip boundary */
if (!page) {
chipnr++;
oobbuf, oobsel, chipnr, (eccbuf != NULL));
if (!ret)
*retlen = written;
- else
+ else
DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret);
out:
/* Check, if it is write protected */
if (nand_check_wp(mtd))
goto out;
-
+
/* Invalidate the page cache, if we write to the cached page */
if (page == this->pagebuf)
this->pagebuf = -1;
*
* NAND write with kvec. This just calls the ecc function
*/
- static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
+ static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
loff_t to, size_t * retlen)
{
- return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL));
+ return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL));
}
/**
*
* NAND write with iovec with ecc
*/
- static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
+ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count,
loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel)
{
int i, page, len, total_len, ret = -EIO, written = 0, chipnr;
return -EINVAL;
}
- /* reject writes, which are not page aligned */
+ /* reject writes, which are not page aligned */
if (NOTALIGNED (to) || NOTALIGNED(total_len)) {
printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n");
return -EINVAL;
goto out;
/* if oobsel is NULL, use chip defaults */
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
+ if (oobsel == NULL)
+ oobsel = &mtd->oobinfo;
/* Autoplace of oob data ? Use the default placement scheme */
if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) {
oobsel = this->autooob;
autoplace = 1;
- }
+ }
if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
autoplace = 1;
/* Setup start page */
page = (int) (to >> this->page_shift);
/* Invalidate the page cache, if we write to the cached page */
- if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift))
+ if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift))
this->pagebuf = -1;
startpage = page & this->pagemask;
oob = 0;
for (i = 1; i <= numpages; i++) {
/* Write one page. If this is the last page to write
- * then use the real pageprogram command, else select
+ * then use the real pageprogram command, else select
* cached programming if supported by the chip.
*/
- ret = nand_write_page (mtd, this, page & this->pagemask,
+ ret = nand_write_page (mtd, this, page & this->pagemask,
&oobbuf[oob], oobsel, i != numpages);
if (ret)
goto out;
count--;
}
} else {
- /* We must use the internal buffer, read data out of each
+ /* We must use the internal buffer, read data out of each
* tuple until we have a full page to write
*/
int cnt = 0;
while (cnt < mtd->oobblock) {
- if (vecs->iov_base != NULL && vecs->iov_len)
+ if (vecs->iov_base != NULL && vecs->iov_len)
this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];
/* Check, if we have to switch to the next tuple */
if (len >= (int) vecs->iov_len) {
count--;
}
}
- this->pagebuf = page;
- this->data_poi = this->data_buf;
+ this->pagebuf = page;
+ this->data_poi = this->data_buf;
bufstart = this->data_poi;
- numpages = 1;
+ numpages = 1;
oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages);
ret = nand_write_page (mtd, this, page & this->pagemask,
oobbuf, oobsel, 0);
ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
if (ret)
goto out;
-
+
written += mtd->oobblock * numpages;
/* All done ? */
if (!count)
{
return nand_erase_nand (mtd, instr, 0);
}
-
+
#define BBT_PAGE_MASK 0xffffff3f
/**
* nand_erase_intern - [NAND Interface] erase block(s)
instr->state = MTD_ERASE_FAILED;
goto erase_exit;
}
-
- /* Invalidate the page cache, if we erase the block which contains
+
+ /* Invalidate the page cache, if we erase the block which contains
the current cached page */
if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block))
this->pagebuf = -1;
this->erase_cmd (mtd, page & this->pagemask);
-
+
status = this->waitfunc (mtd, this, FL_ERASING);
/* See if operation failed and additional status checks are available */
/* if BBT requires refresh, set the BBT rewrite flag to the page being erased */
if (this->options & BBT_AUTO_REFRESH) {
- if (((page & BBT_PAGE_MASK) == bbt_masked_page) &&
+ if (((page & BBT_PAGE_MASK) == bbt_masked_page) &&
(page != this->bbt_td->pages[chipnr])) {
rewrite_bbt[chipnr] = (page << this->page_shift);
}
}
-
+
/* Increment page address and decrement length */
len -= (1 << this->phys_erase_shift);
page += pages_per_block;
this->select_chip(mtd, -1);
this->select_chip(mtd, chipnr);
- /* if BBT requires refresh and BBT-PERCHIP,
+ /* if BBT requires refresh and BBT-PERCHIP,
* set the BBT page mask to see if this BBT should be rewritten */
if ((this->options & BBT_AUTO_REFRESH) && (this->bbt_td->options & NAND_BBT_PERCHIP)) {
bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
for (chipnr = 0; chipnr < this->numchips; chipnr++) {
if (rewrite_bbt[chipnr]) {
/* update the BBT for chip */
- DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]);
nand_update_bbt (mtd, rewrite_bbt[chipnr]);
}
static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs)
{
/* Check for invalid offset */
- if (ofs > mtd->size)
+ if (ofs > mtd->size)
return -EINVAL;
-
+
return nand_block_checkbad (mtd, ofs, 1, 0);
}
return this->block_markbad(mtd, ofs);
}
+ /**
+ * nand_suspend - [MTD Interface] Suspend the NAND flash
+ * @mtd: MTD device structure
+ */
+ static int nand_suspend(struct mtd_info *mtd)
+ {
+ struct nand_chip *this = mtd->priv;
+
+ return nand_get_device (this, mtd, FL_PM_SUSPENDED);
+ }
+
+ /**
+ * nand_resume - [MTD Interface] Resume the NAND flash
+ * @mtd: MTD device structure
+ */
+ static void nand_resume(struct mtd_info *mtd)
+ {
+ struct nand_chip *this = mtd->priv;
+
+ if (this->state == FL_PM_SUSPENDED)
+ nand_release_device(mtd);
+ else
+ printk(KERN_ERR "resume() called for the chip which is not "
+ "in suspended state\n");
+
+ }
+
+
/**
* nand_scan - [NAND Interface] Scan for the NAND device
* @mtd: MTD device structure
/* Print and store flash device information */
for (i = 0; nand_flash_ids[i].name != NULL; i++) {
-
- if (nand_dev_id != nand_flash_ids[i].id)
+
+ if (nand_dev_id != nand_flash_ids[i].id)
continue;
if (!mtd->name) mtd->name = nand_flash_ids[i].name;
this->chipsize = nand_flash_ids[i].chipsize << 20;
-
+
/* New devices have all the information in additional id bytes */
if (!nand_flash_ids[i].pagesize) {
int extid;
mtd->oobblock = 1024 << (extid & 0x3);
extid >>= 2;
/* Calc oobsize */
- mtd->oobsize = (8 << (extid & 0x03)) * (mtd->oobblock / 512);
+ mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock >> 9);
extid >>= 2;
/* Calc blocksize. Blocksize is multiples of 64KiB */
mtd->erasesize = (64 * 1024) << (extid & 0x03);
extid >>= 2;
/* Get buswidth information */
busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
-
+
} else {
/* Old devices have this data hardcoded in the
* device id table */
* this correct ! */
if (busw != (this->options & NAND_BUSWIDTH_16)) {
printk (KERN_INFO "NAND device: Manufacturer ID:"
- " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
nand_manuf_ids[maf_id].name , mtd->name);
- printk (KERN_WARNING
- "NAND bus width %d instead %d bit\n",
+ printk (KERN_WARNING
+ "NAND bus width %d instead %d bit\n",
(this->options & NAND_BUSWIDTH_16) ? 16 : 8,
busw ? 16 : 8);
this->select_chip(mtd, -1);
- return 1;
+ return 1;
}
-
- /* Calculate the address shift from the page size */
+
+ /* Calculate the address shift from the page size */
this->page_shift = ffs(mtd->oobblock) - 1;
this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1;
this->chip_shift = ffs(this->chipsize) - 1;
/* Set the bad block position */
- this->badblockpos = mtd->oobblock > 512 ?
+ this->badblockpos = mtd->oobblock > 512 ?
NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
/* Get chip options, preserve non chip based options */
this->options |= NAND_NO_AUTOINCR;
/* Check if this is a not a samsung device. Do not clear the options
* for chips which are not having an extended id.
- */
+ */
if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize)
this->options &= ~NAND_SAMSUNG_LP_OPTIONS;
-
+
/* Check for AND chips with 4 page planes */
if (this->options & NAND_4PAGE_ARRAY)
this->erase_cmd = multi_erase_cmd;
/* Do not replace user supplied command function ! */
if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
this->cmdfunc = nand_command_lp;
-
+
printk (KERN_INFO "NAND device: Manufacturer ID:"
- " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id,
nand_manuf_ids[maf_id].name , nand_flash_ids[i].name);
break;
}
}
if (i > 1)
printk(KERN_INFO "%d NAND chips detected\n", i);
-
+
/* Allocate buffers, if neccecary */
if (!this->oob_buf) {
size_t len;
}
this->options |= NAND_OOBBUF_ALLOC;
}
-
+
if (!this->data_buf) {
size_t len;
len = mtd->oobblock + mtd->oobsize;
if (!this->autooob) {
/* Select the appropriate default oob placement scheme for
* placement agnostic filesystems */
- switch (mtd->oobsize) {
+ switch (mtd->oobsize) {
case 8:
this->autooob = &nand_oob_8;
break;
BUG();
}
}
-
+
/* The number of bytes available for the filesystem to place fs dependend
* oob data */
mtd->oobavail = 0;
for (i = 0; this->autooob->oobfree[i][1]; i++)
mtd->oobavail += this->autooob->oobfree[i][1];
- /*
+ /*
* check ECC mode, default to software
* if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize
- * fallback to software ECC
+ * fallback to software ECC
*/
- this->eccsize = 256; /* set default eccsize */
+ this->eccsize = 256; /* set default eccsize */
this->eccbytes = 3;
switch (this->eccmode) {
this->eccsize = 2048;
break;
- case NAND_ECC_HW3_512:
- case NAND_ECC_HW6_512:
- case NAND_ECC_HW8_512:
+ case NAND_ECC_HW3_512:
+ case NAND_ECC_HW6_512:
+ case NAND_ECC_HW8_512:
if (mtd->oobblock == 256) {
printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n");
this->eccmode = NAND_ECC_SOFT;
this->calculate_ecc = nand_calculate_ecc;
this->correct_data = nand_correct_data;
- } else
+ } else
this->eccsize = 512; /* set eccsize to 512 */
break;
-
+
case NAND_ECC_HW3_256:
break;
-
- case NAND_ECC_NONE:
+
+ case NAND_ECC_NONE:
printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n");
this->eccmode = NAND_ECC_NONE;
break;
- case NAND_ECC_SOFT:
+ case NAND_ECC_SOFT:
this->calculate_ecc = nand_calculate_ecc;
this->correct_data = nand_correct_data;
break;
default:
printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
- BUG();
- }
+ BUG();
+ }
- /* Check hardware ecc function availability and adjust number of ecc bytes per
+ /* Check hardware ecc function availability and adjust number of ecc bytes per
* calculation step
*/
switch (this->eccmode) {
case NAND_ECC_HW12_2048:
this->eccbytes += 4;
- case NAND_ECC_HW8_512:
+ case NAND_ECC_HW8_512:
this->eccbytes += 2;
- case NAND_ECC_HW6_512:
+ case NAND_ECC_HW6_512:
this->eccbytes += 3;
- case NAND_ECC_HW3_512:
+ case NAND_ECC_HW3_512:
case NAND_ECC_HW3_256:
if (this->calculate_ecc && this->correct_data && this->enable_hwecc)
break;
printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n");
- BUG();
+ BUG();
}
-
+
mtd->eccsize = this->eccsize;
-
+
/* Set the number of read / write steps for one page to ensure ECC generation */
switch (this->eccmode) {
case NAND_ECC_HW12_2048:
this->eccsteps = mtd->oobblock / 512;
break;
case NAND_ECC_HW3_256:
- case NAND_ECC_SOFT:
+ case NAND_ECC_SOFT:
this->eccsteps = mtd->oobblock / 256;
break;
-
- case NAND_ECC_NONE:
+
+ case NAND_ECC_NONE:
this->eccsteps = 1;
break;
}
-
+
/* Initialize state, waitqueue and spinlock */
this->state = FL_READY;
init_waitqueue_head (&this->wq);
mtd->sync = nand_sync;
mtd->lock = NULL;
mtd->unlock = NULL;
- mtd->suspend = NULL;
- mtd->resume = NULL;
+ mtd->suspend = nand_suspend;
+ mtd->resume = nand_resume;
mtd->block_isbad = nand_block_isbad;
mtd->block_markbad = nand_block_markbad;
memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
mtd->owner = THIS_MODULE;
-
+
/* Check, if we should skip the bad block table scan */
if (this->options & NAND_SKIP_BBTSCAN)
return 0;
}
/**
- * nand_release - [NAND Interface] Free resources held by the NAND device
+ * nand_release - [NAND Interface] Free resources held by the NAND device
* @mtd: MTD device structure
*/
void nand_release (struct mtd_info *mtd)
/* Deregister the device */
del_mtd_device (mtd);
- /* Free bad block table memory, if allocated */
- if (this->bbt)
- kfree (this->bbt);
+ /* Free bad block table memory */
+ kfree (this->bbt);
/* Buffer allocated by nand_scan ? */
if (this->options & NAND_OOBBUF_ALLOC)
kfree (this->oob_buf);
/* 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 (add_mtd_blktrans_dev(&nftl->mbd)) {
- if (nftl->ReplUnitTable)
- kfree(nftl->ReplUnitTable);
- if (nftl->EUNtable)
- kfree(nftl->EUNtable);
+ kfree(nftl->ReplUnitTable);
+ kfree(nftl->EUNtable);
kfree(nftl);
return;
}
DEBUG(MTD_DEBUG_LEVEL1, "NFTL: remove_dev (i=%d)\n", dev->devnum);
del_mtd_blktrans_dev(dev);
- if (nftl->ReplUnitTable)
- kfree(nftl->ReplUnitTable);
- if (nftl->EUNtable)
- kfree(nftl->EUNtable);
+ kfree(nftl->ReplUnitTable);
+ kfree(nftl->EUNtable);
kfree(nftl);
}
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);
}
config HFS_FS
tristate "Apple Macintosh file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
+ select NLS
help
If you say Y here, you will be able to mount Macintosh-formatted
floppy disks and hard drive partitions with full read-write access.
- NOR flash with transparent ECC
- DataFlash
+ config JFFS2_SUMMARY
+ bool "JFFS2 summary support (EXPERIMENTAL)"
+ depends on JFFS2_FS && EXPERIMENTAL
+ default n
+ help
+ This feature makes it possible to use summary information
+ for faster filesystem mount.
+
+ The summary information can be inserted into a filesystem image
+ by the utility 'sumtool'.
+
+ If unsure, say 'N'.
+
config JFFS2_COMPRESSION_OPTIONS
bool "Advanced compression options for JFFS2"
depends on JFFS2_FS
default y
help
Zlib is designed to be a free, general-purpose, legally unencumbered,
- lossless data-compression library for use on virtually any computer
+ lossless data-compression library for use on virtually any computer
hardware and operating system. See <http://www.gzip.org/zlib/> for
further information.
-
+
Say 'Y' if unsure.
config JFFS2_RTIME
default JFFS2_CMODE_PRIORITY
depends on JFFS2_FS
help
- You can set here the default compression mode of JFFS2 from
+ You can set here the default compression mode of JFFS2 from
the available compression modes. Don't touch if unsure.
config JFFS2_CMODE_NONE
config JFFS2_CMODE_PRIORITY
bool "priority"
help
- Tries the compressors in a predefinied order and chooses the first
+ Tries the compressors in a predefinied order and chooses the first
successful one.
config JFFS2_CMODE_SIZE
bool "size (EXPERIMENTAL)"
help
- Tries all compressors and chooses the one which has the smallest
+ Tries all compressors and chooses the one which has the smallest
result.
endchoice
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.92 2005/04/05 12:51:54 dedekind Exp $
+ * $Id: wbuf.c,v 1.100 2005/09/30 13:59:13 dedekind Exp $
*
*/
static unsigned char *brokenbuf;
#endif
+ #define PAGE_DIV(x) ( ((unsigned long)(x) / (unsigned long)(c->wbuf_pagesize)) * (unsigned long)(c->wbuf_pagesize) )
+ #define PAGE_MOD(x) ( (unsigned long)(x) % (unsigned long)(c->wbuf_pagesize) )
+
/* max. erase failures before we mark a block bad */
#define MAX_ERASE_FAILURES 2
- /* two seconds timeout for timed wbuf-flushing */
- #define WBUF_FLUSH_TIMEOUT 2 * HZ
-
struct jffs2_inodirty {
uint32_t ino;
struct jffs2_inodirty *next;
{
D1(printk("About to refile bad block at %08x\n", jeb->offset));
- D2(jffs2_dump_block_lists(c));
/* File the existing block on the bad_used_list.... */
if (c->nextblock == jeb)
c->nextblock = NULL;
c->nr_erasing_blocks++;
jffs2_erase_pending_trigger(c);
}
- D2(jffs2_dump_block_lists(c));
/* Adjust its size counts accordingly */
c->wasted_size += jeb->free_size;
jeb->wasted_size += jeb->free_size;
jeb->free_size = 0;
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+ jffs2_dbg_dump_block_lists_nolock(c);
+ jffs2_dbg_acct_sanity_check_nolock(c,jeb);
+ jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
}
/* Recover from failure to write wbuf. Recover the nodes up to the
/* Find the first node to be recovered, by skipping over every
node which ends before the wbuf starts, or which is obsolete. */
first_raw = &jeb->first_node;
- while (*first_raw &&
+ while (*first_raw &&
(ref_obsolete(*first_raw) ||
(ref_offset(*first_raw)+ref_totlen(c, jeb, *first_raw)) < c->wbuf_ofs)) {
D1(printk(KERN_DEBUG "Skipping node at 0x%08x(%d)-0x%08x which is either before 0x%08x or obsolete\n",
ret = c->mtd->read_ecc(c->mtd, start, c->wbuf_ofs - start, &retlen, buf, NULL, c->oobinfo);
else
ret = c->mtd->read(c->mtd, start, c->wbuf_ofs - start, &retlen, buf);
-
+
if (ret == -EBADMSG && retlen == c->wbuf_ofs - start) {
/* ECC recovered */
ret = 0;
/* ... and get an allocation of space from a shiny new block instead */
- ret = jffs2_reserve_space_gc(c, end-start, &ofs, &len);
+ ret = jffs2_reserve_space_gc(c, end-start, &ofs, &len, JFFS2_SUMMARY_NOSUM_SIZE);
if (ret) {
printk(KERN_WARNING "Failed to allocate space for wbuf recovery. Data loss ensues.\n");
kfree(buf);
if (end-start >= c->wbuf_pagesize) {
/* Need to do another write immediately, but it's possible
that this is just because the wbuf itself is completely
- full, and there's nothing earlier read back from the
- flash. Hence 'buf' isn't necessarily what we're writing
+ full, and there's nothing earlier read back from the
+ flash. Hence 'buf' isn't necessarily what we're writing
from. */
unsigned char *rewrite_buf = buf?:c->wbuf;
uint32_t towrite = (end-start) - ((end-start)%c->wbuf_pagesize);
D1(printk(KERN_DEBUG "Write 0x%x bytes at 0x%08x in wbuf recover\n",
towrite, ofs));
-
+
#ifdef BREAKMEHEADER
static int breakme;
if (breakme++ == 20) {
c->wbuf_ofs = ofs + towrite;
memmove(c->wbuf, rewrite_buf + towrite, c->wbuf_len);
/* Don't muck about with c->wbuf_inodes. False positives are harmless. */
- if (buf)
- kfree(buf);
+ kfree(buf);
} else {
/* OK, now we're left with the dregs in whichever buffer we're using */
if (buf) {
else
jeb->last_node = container_of(first_raw, struct jffs2_raw_node_ref, next_phys);
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+ jffs2_dbg_acct_sanity_check_nolock(c, jeb);
+ jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
- ACCT_SANITY_CHECK(c,new_jeb);
- D1(ACCT_PARANOIA_CHECK(new_jeb));
+ jffs2_dbg_acct_sanity_check_nolock(c, new_jeb);
+ jffs2_dbg_acct_paranoia_check_nolock(c, new_jeb);
spin_unlock(&c->erase_completion_lock);
this happens, if we have a change to a new block,
or if fsync forces us to flush the writebuffer.
if we have a switch to next page, we will not have
- enough remaining space for this.
+ enough remaining space for this.
*/
- if (pad && !jffs2_dataflash(c)) {
+ if (pad ) {
c->wbuf_len = PAD(c->wbuf_len);
/* Pad with JFFS2_DIRTY_BITMASK initially. this helps out ECC'd NOR
with 8 byte page size */
memset(c->wbuf + c->wbuf_len, 0, c->wbuf_pagesize - c->wbuf_len);
-
+
if ( c->wbuf_len + sizeof(struct jffs2_unknown_node) < c->wbuf_pagesize) {
struct jffs2_unknown_node *padnode = (void *)(c->wbuf + c->wbuf_len);
padnode->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
}
/* else jffs2_flash_writev has actually filled in the rest of the
buffer for us, and will deal with the node refs etc. later. */
-
+
#ifdef BREAKME
static int breakme;
if (breakme++ == 20) {
c->mtd->write_ecc(c->mtd, c->wbuf_ofs, c->wbuf_pagesize,
&retlen, brokenbuf, NULL, c->oobinfo);
ret = -EIO;
- } else
+ } else
#endif
-
+
if (jffs2_cleanmarker_oob(c))
ret = c->mtd->write_ecc(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen, c->wbuf, NULL, c->oobinfo);
else
spin_lock(&c->erase_completion_lock);
/* Adjust free size of the block if we padded. */
- if (pad && !jffs2_dataflash(c)) {
+ if (pad) {
struct jffs2_eraseblock *jeb;
jeb = &c->blocks[c->wbuf_ofs / c->sector_size];
D1(printk(KERN_DEBUG "jffs2_flush_wbuf() adjusting free_size of %sblock at %08x\n",
(jeb==c->nextblock)?"next":"", jeb->offset));
- /* wbuf_pagesize - wbuf_len is the amount of space that's to be
+ /* wbuf_pagesize - wbuf_len is the amount of space that's to be
padded. If there is less free space in the block than that,
something screwed up */
if (jeb->free_size < (c->wbuf_pagesize - c->wbuf_len)) {
return 0;
}
- /* Trigger garbage collection to flush the write-buffer.
+ /* Trigger garbage collection to flush the write-buffer.
If ino arg is zero, do it if _any_ real (i.e. not GC) writes are
- outstanding. If ino arg non-zero, do it only if a write for the
+ outstanding. If ino arg non-zero, do it only if a write for the
given inode is outstanding. */
int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
{
return ret;
}
-
- #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
- #define PAGE_DIV(x) ( ((unsigned long)(x) / (unsigned long)(c->wbuf_pagesize)) * (unsigned long)(c->wbuf_pagesize) )
- #define PAGE_MOD(x) ( (unsigned long)(x) % (unsigned long)(c->wbuf_pagesize) )
- #else
- #define PAGE_DIV(x) ( (x) & (~(c->wbuf_pagesize - 1)) )
- #define PAGE_MOD(x) ( (x) & (c->wbuf_pagesize - 1) )
- #endif
-
int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino)
{
struct kvec outvecs[3];
/* If not NAND flash, don't bother */
if (!jffs2_is_writebuffered(c))
return jffs2_flash_direct_writev(c, invecs, count, to, retlen);
-
+
down_write(&c->wbuf_sem);
/* If wbuf_ofs is not initialized, set it to target address */
if (c->wbuf_ofs == 0xFFFFFFFF) {
c->wbuf_ofs = PAGE_DIV(to);
- c->wbuf_len = PAGE_MOD(to);
+ c->wbuf_len = PAGE_MOD(to);
memset(c->wbuf,0xff,c->wbuf_pagesize);
}
memset(c->wbuf,0xff,c->wbuf_pagesize);
}
}
-
- /* Sanity checks on target address.
- It's permitted to write at PAD(c->wbuf_len+c->wbuf_ofs),
- and it's permitted to write at the beginning of a new
+
+ /* Sanity checks on target address.
+ It's permitted to write at PAD(c->wbuf_len+c->wbuf_ofs),
+ and it's permitted to write at the beginning of a new
erase block. Anything else, and you die.
New block starts at xxx000c (0-b = block header)
*/
}
/* set pointer to new block */
c->wbuf_ofs = PAGE_DIV(to);
- c->wbuf_len = PAGE_MOD(to);
- }
+ c->wbuf_len = PAGE_MOD(to);
+ }
if (to != PAD(c->wbuf_ofs + c->wbuf_len)) {
/* We're not writing immediately after the writebuffer. Bad. */
invec = 0;
outvec = 0;
- /* Fill writebuffer first, if already in use */
+ /* Fill writebuffer first, if already in use */
if (c->wbuf_len) {
uint32_t invec_ofs = 0;
- /* adjust alignment offset */
+ /* adjust alignment offset */
if (c->wbuf_len != PAGE_MOD(to)) {
c->wbuf_len = PAGE_MOD(to);
/* take care of alignment to next page */
if (!c->wbuf_len)
c->wbuf_len = c->wbuf_pagesize;
}
-
+
while(c->wbuf_len < c->wbuf_pagesize) {
uint32_t thislen;
-
+
if (invec == count)
goto alldone;
if (thislen >= invecs[invec].iov_len)
thislen = invecs[invec].iov_len;
-
+
invec_ofs = thislen;
memcpy(c->wbuf + c->wbuf_len, invecs[invec].iov_base, thislen);
c->wbuf_len += thislen;
donelen += thislen;
/* Get next invec, if actual did not fill the buffer */
- if (c->wbuf_len < c->wbuf_pagesize)
+ if (c->wbuf_len < c->wbuf_pagesize)
invec++;
- }
-
+ }
+
/* write buffer is full, flush buffer */
ret = __jffs2_flush_wbuf(c, NOPAD);
if (ret) {
/* We did cross a page boundary, so we write some now */
if (jffs2_cleanmarker_oob(c))
- ret = c->mtd->writev_ecc(c->mtd, outvecs, splitvec+1, outvec_to, &wbuf_retlen, NULL, c->oobinfo);
+ ret = c->mtd->writev_ecc(c->mtd, outvecs, splitvec+1, outvec_to, &wbuf_retlen, NULL, c->oobinfo);
else
ret = jffs2_flash_direct_writev(c, outvecs, splitvec+1, outvec_to, &wbuf_retlen);
-
+
if (ret < 0 || wbuf_retlen != PAGE_DIV(totlen)) {
/* At this point we have no problem,
c->wbuf is empty. However refile nextblock to avoid
spin_unlock(&c->erase_completion_lock);
goto exit;
}
-
+
donelen += wbuf_retlen;
c->wbuf_ofs = PAGE_DIV(outvec_to) + PAGE_DIV(totlen);
alldone:
*retlen = donelen;
+ if (jffs2_sum_active()) {
+ int res = jffs2_sum_add_kvec(c, invecs, count, (uint32_t) to);
+ if (res)
+ return res;
+ }
+
if (c->wbuf_len && ino)
jffs2_wbuf_dirties_inode(c, ino);
ret = 0;
-
+
exit:
up_write(&c->wbuf_sem);
return ret;
struct kvec vecs[1];
if (!jffs2_is_writebuffered(c))
- return c->mtd->write(c->mtd, ofs, len, retlen, buf);
+ return jffs2_flash_direct_write(c, ofs, len, retlen, buf);
vecs[0].iov_base = (unsigned char *) buf;
vecs[0].iov_len = len;
if ( (ret == -EBADMSG) && (*retlen == len) ) {
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 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
+ * Maybe we had a system crash or power loss before the ecc write or
* a erase was completed.
* So we return success. :)
*/
ret = 0;
- }
+ }
/* if no writebuffer available or write buffer empty, return */
if (!c->wbuf_pagesize || !c->wbuf_len)
if (owbf > c->wbuf_len) /* is read beyond write buffer ? */
goto exit;
lwbf = c->wbuf_len - owbf; /* number of bytes to copy */
- if (lwbf > len)
+ if (lwbf > len)
lwbf = len;
- } else {
+ } else {
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 */
- if (lwbf > c->wbuf_len)
+ if (lwbf > c->wbuf_len)
lwbf = c->wbuf_len;
- }
+ }
if (lwbf > 0)
memcpy(buf+orbf,c->wbuf+owbf,lwbf);
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
*/
D1(printk(KERN_WARNING "jffs2_check_oob_empty(): Read OOB failed %d for block at %08x\n", ret, jeb->offset));
goto out;
}
-
+
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;
}
-
+
/* Special check for first page */
for(i = 0; i < oob_size ; i++) {
/* Yeah, we know about the cleanmarker. */
- if (mode && i >= c->fsdata_pos &&
+ 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[page+i], page+i, jeb->offset));
- ret = 1;
+ buf[i], i, jeb->offset));
+ ret = 1;
goto out;
}
}
- /* we know, we are aligned :) */
+ /* 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;
+ ret = 1;
goto out;
}
}
out:
- kfree(buf);
-
+ kfree(buf);
+
return ret;
}
n.totlen = cpu_to_je32(8);
ret = jffs2_flash_write_oob(c, jeb->offset + c->fsdata_pos, c->fsdata_len, &retlen, (unsigned char *)&n);
-
+
if (ret) {
D1(printk(KERN_WARNING "jffs2_write_nand_cleanmarker(): Write failed for block at %08x: error %d\n", jeb->offset, ret));
return ret;
return 0;
}
- /*
+ /*
* On NAND we try to mark this block bad. If the block was erased more
* than MAX_ERASE_FAILURES we mark it finaly bad.
* Don't care about failures. This block remains on the erase-pending
D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Marking bad block at %08x\n", bad_offset));
ret = c->mtd->block_markbad(c->mtd, bad_offset);
-
+
if (ret) {
D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Write failed for block at %08x: error %d\n", jeb->offset, ret));
return ret;
/* Do this only, if we have an oob buffer */
if (!c->mtd->oobsize)
return 0;
-
+
/* Cleanmarker is out-of-band, so inline size zero */
c->cleanmarker_size = 0;
c->fsdata_len = NAND_JFFS2_OOB16_FSDALEN;
c->badblock_pos = 15;
break;
-
+
default:
D1(printk(KERN_DEBUG "JFFS2 on NAND. No autoplacment info found\n"));
return -EINVAL;
init_rwsem(&c->wbuf_sem);
c->wbuf_pagesize = c->mtd->oobblock;
c->wbuf_ofs = 0xFFFFFFFF;
-
+
c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
if (!c->wbuf)
return -ENOMEM;
int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
c->cleanmarker_size = 0; /* No cleanmarkers needed */
-
+
/* Initialize write buffer */
init_rwsem(&c->wbuf_sem);
- c->wbuf_pagesize = c->sector_size;
- c->wbuf_ofs = 0xFFFFFFFF;
+
+ c->wbuf_pagesize = c->mtd->erasesize;
+
+ /* Find a suitable c->sector_size
+ * - Not too much sectors
+ * - Sectors have to be at least 4 K + some bytes
+ * - All known dataflashes have erase sizes of 528 or 1056
+ * - we take at least 8 eraseblocks and want to have at least 8K size
+ * - The concatenation should be a power of 2
+ */
+
+ c->sector_size = 8 * c->mtd->erasesize;
+
+ while (c->sector_size < 8192) {
+ c->sector_size *= 2;
+ }
+
+ /* It may be necessary to adjust the flash size */
+ c->flash_size = c->mtd->size;
+
+ if ((c->flash_size % c->sector_size) != 0) {
+ c->flash_size = (c->flash_size / c->sector_size) * c->sector_size;
+ printk(KERN_WARNING "JFFS2 flash size adjusted to %dKiB\n", c->flash_size);
+ };
+
+ c->wbuf_ofs = 0xFFFFFFFF;
c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
if (!c->wbuf)
return -ENOMEM;
- printk(KERN_INFO "JFFS2 write-buffering enabled (%i)\n", c->wbuf_pagesize);
+ printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
return 0;
}
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
+
+ int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
+ /* Cleanmarker currently occupies a whole programming region */
+ c->cleanmarker_size = MTD_PROGREGION_SIZE(c->mtd);
+
+ /* Initialize write buffer */
+ init_rwsem(&c->wbuf_sem);
+ c->wbuf_pagesize = MTD_PROGREGION_SIZE(c->mtd);
+ c->wbuf_ofs = 0xFFFFFFFF;
+
+ c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+ if (!c->wbuf)
+ return -ENOMEM;
+
+ return 0;
+ }
+
+ void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c) {
+ kfree(c->wbuf);
+ }
projects / karo-tx-linux.git / commitdiff