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Diffstat (limited to 'drivers/mtd/chips/cfi_cmdset_0002.c')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0002.c156
1 files changed, 83 insertions, 73 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 0e64750..aed10bd 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -10,14 +10,14 @@
*
* 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 $
*
*/
@@ -93,7 +93,7 @@ static void cfi_tell_features(struct cfi_pri_amdstd *extp)
};
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))
@@ -118,9 +118,9 @@ static void cfi_tell_features(struct cfi_pri_amdstd *extp)
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))
@@ -177,7 +177,7 @@ static void fixup_use_erase_chip(struct mtd_info *mtd, void *param)
((cfi->cfiq->EraseRegionInfo[0] & 0xffff) == 0)) {
mtd->erase = cfi_amdstd_erase_chip;
}
-
+
}
static struct cfi_fixup cfi_fixup_table[] = {
@@ -239,7 +239,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
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.
@@ -253,8 +253,18 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
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);
@@ -262,7 +272,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
#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)) {
@@ -273,11 +283,11 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
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;
@@ -288,11 +298,11 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
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;
@@ -310,10 +320,10 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
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);
}
@@ -326,24 +336,24 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *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;
}
@@ -429,7 +439,7 @@ static int __xipram chip_good(struct map_info *map, unsigned long addr, map_word
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);
}
@@ -461,7 +471,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
/* Someone else might have been playing with it. */
goto retry;
}
-
+
case FL_READY:
case FL_CFI_QUERY:
case FL_JEDEC_QUERY:
@@ -504,7 +514,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
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);
@@ -607,7 +617,7 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip,
* 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
@@ -631,9 +641,9 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip,
((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
@@ -769,8 +779,8 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof
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);
@@ -850,7 +860,7 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi
#endif
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock(chip->mutex);
schedule();
@@ -862,7 +872,7 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi
timeo = jiffies + HZ;
goto retry;
- }
+ }
adr += chip->start;
@@ -871,14 +881,14 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi
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);
@@ -987,7 +997,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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 */
@@ -1003,16 +1013,16 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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);
}
@@ -1022,7 +1032,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
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;
@@ -1090,27 +1100,27 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len,
/* 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;
@@ -1128,7 +1138,7 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len,
len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
@@ -1166,12 +1176,12 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len,
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;
}
@@ -1183,7 +1193,7 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t 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;
@@ -1213,7 +1223,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
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);
@@ -1247,8 +1257,8 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
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 */
@@ -1264,13 +1274,13 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
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);
@@ -1342,7 +1352,7 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
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;
@@ -1353,7 +1363,7 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
len -= size;
if (ofs >> cfi->chipshift) {
- chipnum ++;
+ chipnum ++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
@@ -1570,7 +1580,7 @@ int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr)
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
-
+
return 0;
}
@@ -1593,7 +1603,7 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
-
+
return 0;
}
@@ -1620,7 +1630,7 @@ static void cfi_amdstd_sync (struct mtd_info *mtd)
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.
*/
@@ -1631,13 +1641,13 @@ static void cfi_amdstd_sync (struct mtd_info *mtd)
default:
/* Not an idle state */
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock(chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
-
+
goto retry;
}
}
@@ -1648,7 +1658,7 @@ static void cfi_amdstd_sync (struct mtd_info *mtd)
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_SYNCING) {
chip->state = chip->oldstate;
wake_up(&chip->wq);
@@ -1678,7 +1688,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd)
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.
*/
@@ -1699,7 +1709,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd)
chip = &cfi->chips[i];
spin_lock(chip->mutex);
-
+
if (chip->state == FL_PM_SUSPENDED) {
chip->state = chip->oldstate;
wake_up(&chip->wq);
@@ -1707,7 +1717,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd)
spin_unlock(chip->mutex);
}
}
-
+
return ret;
}
@@ -1720,11 +1730,11 @@ static void cfi_amdstd_resume(struct mtd_info *mtd)
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);
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