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path: root/drivers/mtd/chips/cfi_cmdset_0001.c
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Diffstat (limited to 'drivers/mtd/chips/cfi_cmdset_0001.c')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c460
1 files changed, 251 insertions, 209 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5fbf29e1e64..a7543ba3e19 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -21,7 +21,6 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
-#include <linux/init.h>
#include <asm/io.h>
#include <asm/byteorder.h>
@@ -34,7 +33,6 @@
#include <linux/mtd/xip.h>
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
-#include <linux/mtd/compatmac.h>
#include <linux/mtd/cfi.h>
/* #define CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE */
@@ -54,6 +52,11 @@
/* Atmel chips */
#define AT49BV640D 0x02de
#define AT49BV640DT 0x02db
+/* Sharp chips */
+#define LH28F640BFHE_PTTL90 0x00b0
+#define LH28F640BFHE_PBTL90 0x00b1
+#define LH28F640BFHE_PTTL70A 0x00b2
+#define LH28F640BFHE_PBTL70A 0x00b3
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 *);
@@ -63,15 +66,17 @@ 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, uint64_t len);
static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_intelext_is_locked(struct mtd_info *mtd, loff_t ofs,
+ uint64_t len);
#ifdef CONFIG_MTD_OTP
static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_intelext_write_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_intelext_lock_user_prot_reg (struct mtd_info *, loff_t, size_t);
-static int cfi_intelext_get_fact_prot_info (struct mtd_info *,
- struct otp_info *, size_t);
-static int cfi_intelext_get_user_prot_info (struct mtd_info *,
- struct otp_info *, size_t);
+static int cfi_intelext_get_fact_prot_info(struct mtd_info *, size_t,
+ size_t *, struct otp_info *);
+static int cfi_intelext_get_user_prot_info(struct mtd_info *, size_t,
+ size_t *, struct otp_info *);
#endif
static int cfi_intelext_suspend (struct mtd_info *);
static void cfi_intelext_resume (struct mtd_info *);
@@ -86,7 +91,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *, struct cfi_private **
static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys);
-static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
@@ -161,7 +166,7 @@ static void cfi_tell_features(struct cfi_pri_intelext *extp)
#endif
/* Atmel chips don't use the same PRI format as Intel chips */
-static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+static void fixup_convert_atmel_pri(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -201,7 +206,7 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
cfi->cfiq->BufWriteTimeoutMax = 0;
}
-static void fixup_at49bv640dx_lock(struct mtd_info *mtd, void *param)
+static void fixup_at49bv640dx_lock(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -213,7 +218,7 @@ static void fixup_at49bv640dx_lock(struct mtd_info *mtd, void *param)
#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
/* 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)
+static void fixup_intel_strataflash(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -226,7 +231,7 @@ static void fixup_intel_strataflash(struct mtd_info *mtd, void* param)
#endif
#ifdef CMDSET0001_DISABLE_WRITE_SUSPEND
-static void fixup_no_write_suspend(struct mtd_info *mtd, void* param)
+static void fixup_no_write_suspend(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -239,7 +244,7 @@ static void fixup_no_write_suspend(struct mtd_info *mtd, void* param)
}
#endif
-static void fixup_st_m28w320ct(struct mtd_info *mtd, void* param)
+static void fixup_st_m28w320ct(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -248,7 +253,7 @@ static void fixup_st_m28w320ct(struct mtd_info *mtd, void* param)
cfi->cfiq->BufWriteTimeoutMax = 0; /* Not supported */
}
-static void fixup_st_m28w320cb(struct mtd_info *mtd, void* param)
+static void fixup_st_m28w320cb(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -258,30 +263,60 @@ static void fixup_st_m28w320cb(struct mtd_info *mtd, void* param)
(cfi->cfiq->EraseRegionInfo[1] & 0xffff0000) | 0x3e;
};
-static void fixup_use_point(struct mtd_info *mtd, void *param)
+static int is_LH28F640BF(struct cfi_private *cfi)
+{
+ /* Sharp LH28F640BF Family */
+ if (cfi->mfr == CFI_MFR_SHARP && (
+ cfi->id == LH28F640BFHE_PTTL90 || cfi->id == LH28F640BFHE_PBTL90 ||
+ cfi->id == LH28F640BFHE_PTTL70A || cfi->id == LH28F640BFHE_PBTL70A))
+ return 1;
+ return 0;
+}
+
+static void fixup_LH28F640BF(struct mtd_info *mtd)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_intelext *extp = cfi->cmdset_priv;
+
+ /* Reset the Partition Configuration Register on LH28F640BF
+ * to a single partition (PCR = 0x000): PCR is embedded into A0-A15. */
+ if (is_LH28F640BF(cfi)) {
+ printk(KERN_INFO "Reset Partition Config. Register: 1 Partition of 4 planes\n");
+ map_write(map, CMD(0x60), 0);
+ map_write(map, CMD(0x04), 0);
+
+ /* We have set one single partition thus
+ * Simultaneous Operations are not allowed */
+ printk(KERN_INFO "cfi_cmdset_0001: Simultaneous Operations disabled\n");
+ extp->FeatureSupport &= ~512;
+ }
+}
+
+static void fixup_use_point(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
- if (!mtd->point && map_is_linear(map)) {
- mtd->point = cfi_intelext_point;
- mtd->unpoint = cfi_intelext_unpoint;
+ if (!mtd->_point && map_is_linear(map)) {
+ mtd->_point = cfi_intelext_point;
+ mtd->_unpoint = cfi_intelext_unpoint;
}
}
-static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
+static void fixup_use_write_buffers(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
if (cfi->cfiq->BufWriteTimeoutTyp) {
printk(KERN_INFO "Using buffer write method\n" );
- mtd->write = cfi_intelext_write_buffers;
- mtd->writev = cfi_intelext_writev;
+ mtd->_write = cfi_intelext_write_buffers;
+ mtd->_writev = cfi_intelext_writev;
}
}
/*
* Some chips power-up with all sectors locked by default.
*/
-static void fixup_unlock_powerup_lock(struct mtd_info *mtd, void *param)
+static void fixup_unlock_powerup_lock(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
@@ -294,31 +329,33 @@ static void fixup_unlock_powerup_lock(struct mtd_info *mtd, void *param)
}
static struct cfi_fixup cfi_fixup_table[] = {
- { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
- { CFI_MFR_ATMEL, AT49BV640D, fixup_at49bv640dx_lock, NULL },
- { CFI_MFR_ATMEL, AT49BV640DT, fixup_at49bv640dx_lock, NULL },
+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri },
+ { CFI_MFR_ATMEL, AT49BV640D, fixup_at49bv640dx_lock },
+ { CFI_MFR_ATMEL, AT49BV640DT, fixup_at49bv640dx_lock },
#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 },
#endif
#ifdef CMDSET0001_DISABLE_WRITE_SUSPEND
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_no_write_suspend, NULL },
+ { CFI_MFR_ANY, CFI_ID_ANY, fixup_no_write_suspend },
#endif
#if !FORCE_WORD_WRITE
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL },
+ { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers },
#endif
- { CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct, NULL },
- { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb, NULL },
- { CFI_MFR_INTEL, CFI_ID_ANY, fixup_unlock_powerup_lock, NULL, },
- { 0, 0, NULL, NULL }
+ { CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct },
+ { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb },
+ { CFI_MFR_INTEL, CFI_ID_ANY, fixup_unlock_powerup_lock },
+ { CFI_MFR_SHARP, CFI_ID_ANY, fixup_unlock_powerup_lock },
+ { CFI_MFR_SHARP, CFI_ID_ANY, fixup_LH28F640BF },
+ { 0, 0, NULL }
};
static struct cfi_fixup jedec_fixup_table[] = {
- { CFI_MFR_INTEL, I82802AB, fixup_use_fwh_lock, NULL, },
- { CFI_MFR_INTEL, I82802AC, fixup_use_fwh_lock, NULL, },
- { CFI_MFR_ST, M50LPW080, fixup_use_fwh_lock, NULL, },
- { CFI_MFR_ST, M50FLW080A, fixup_use_fwh_lock, NULL, },
- { CFI_MFR_ST, M50FLW080B, fixup_use_fwh_lock, NULL, },
- { 0, 0, NULL, NULL }
+ { CFI_MFR_INTEL, I82802AB, fixup_use_fwh_lock },
+ { CFI_MFR_INTEL, I82802AC, fixup_use_fwh_lock },
+ { CFI_MFR_ST, M50LPW080, fixup_use_fwh_lock },
+ { CFI_MFR_ST, M50FLW080A, fixup_use_fwh_lock },
+ { CFI_MFR_ST, M50FLW080B, fixup_use_fwh_lock },
+ { 0, 0, NULL }
};
static struct cfi_fixup fixup_table[] = {
/* The CFI vendor ids and the JEDEC vendor IDs appear
@@ -326,8 +363,8 @@ static struct cfi_fixup fixup_table[] = {
* well. This table is to pick all cases where
* we know that is the case.
*/
- { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_point, NULL },
- { 0, 0, NULL, NULL }
+ { CFI_MFR_ANY, CFI_ID_ANY, fixup_use_point },
+ { 0, 0, NULL }
};
static void cfi_fixup_major_minor(struct cfi_private *cfi,
@@ -434,25 +471,25 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
int i;
mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
- if (!mtd) {
- printk(KERN_ERR "Failed to allocate memory for MTD device\n");
+ if (!mtd)
return NULL;
- }
mtd->priv = map;
mtd->type = MTD_NORFLASH;
/* Fill in the default mtd operations */
- mtd->erase = cfi_intelext_erase_varsize;
- mtd->read = cfi_intelext_read;
- mtd->write = cfi_intelext_write_words;
- mtd->sync = cfi_intelext_sync;
- mtd->lock = cfi_intelext_lock;
- mtd->unlock = cfi_intelext_unlock;
- mtd->suspend = cfi_intelext_suspend;
- mtd->resume = cfi_intelext_resume;
+ mtd->_erase = cfi_intelext_erase_varsize;
+ mtd->_read = cfi_intelext_read;
+ mtd->_write = cfi_intelext_write_words;
+ mtd->_sync = cfi_intelext_sync;
+ mtd->_lock = cfi_intelext_lock;
+ mtd->_unlock = cfi_intelext_unlock;
+ mtd->_is_locked = cfi_intelext_is_locked;
+ mtd->_suspend = cfi_intelext_suspend;
+ mtd->_resume = cfi_intelext_resume;
mtd->flags = MTD_CAP_NORFLASH;
mtd->name = map->name;
mtd->writesize = 1;
+ mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
mtd->reboot_notifier.notifier_call = cfi_intelext_reboot;
@@ -561,10 +598,8 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips;
mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info)
* mtd->numeraseregions, GFP_KERNEL);
- if (!mtd->eraseregions) {
- printk(KERN_ERR "Failed to allocate memory for MTD erase region info\n");
+ if (!mtd->eraseregions)
goto setup_err;
- }
for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
unsigned long ernum, ersize;
@@ -597,12 +632,12 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
}
#ifdef CONFIG_MTD_OTP
- mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
- mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
- mtd->write_user_prot_reg = cfi_intelext_write_user_prot_reg;
- mtd->lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
- mtd->get_fact_prot_info = cfi_intelext_get_fact_prot_info;
- mtd->get_user_prot_info = cfi_intelext_get_user_prot_info;
+ mtd->_read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
+ mtd->_read_user_prot_reg = cfi_intelext_read_user_prot_reg;
+ mtd->_write_user_prot_reg = cfi_intelext_write_user_prot_reg;
+ mtd->_lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
+ mtd->_get_fact_prot_info = cfi_intelext_get_fact_prot_info;
+ mtd->_get_user_prot_info = cfi_intelext_get_user_prot_info;
#endif
/* This function has the potential to distort the reality
@@ -615,10 +650,8 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
return mtd;
setup_err:
- if(mtd) {
- kfree(mtd->eraseregions);
- kfree(mtd);
- }
+ kfree(mtd->eraseregions);
+ kfree(mtd);
kfree(cfi->cmdset_priv);
return NULL;
}
@@ -719,7 +752,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
chip = &newcfi->chips[0];
for (i = 0; i < cfi->numchips; i++) {
shared[i].writing = shared[i].erasing = NULL;
- spin_lock_init(&shared[i].lock);
+ mutex_init(&shared[i].lock);
for (j = 0; j < numparts; j++) {
*chip = cfi->chips[i];
chip->start += j << partshift;
@@ -727,8 +760,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
/* those should be reset too since
they create memory references. */
init_waitqueue_head(&chip->wq);
- spin_lock_init(&chip->_spinlock);
- chip->mutex = &chip->_spinlock;
+ mutex_init(&chip->mutex);
chip++;
}
}
@@ -774,9 +806,9 @@ static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long
if (chip->priv && map_word_andequal(map, status, status_PWS, status_PWS))
break;
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
cfi_udelay(1);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
/* Someone else might have been playing with it. */
return -EAGAIN;
}
@@ -812,20 +844,17 @@ static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long
break;
if (time_after(jiffies, timeo)) {
- /* Urgh. Resume and pretend we weren't here. */
- map_write(map, CMD(0xd0), adr);
- /* Make sure we're in 'read status' mode if it had finished */
- map_write(map, CMD(0x70), adr);
- chip->state = FL_ERASING;
- chip->oldstate = FL_READY;
+ /* Urgh. Resume and pretend we weren't here.
+ * Make sure we're in 'read status' mode if it had finished */
+ put_chip(map, chip, adr);
printk(KERN_ERR "%s: Chip not ready after erase "
"suspended: status = 0x%lx\n", map->name, status.x[0]);
return -EIO;
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
cfi_udelay(1);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
/* Nobody will touch it while it's in state FL_ERASE_SUSPENDING.
So we can just loop here. */
}
@@ -852,10 +881,10 @@ static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long
sleep:
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
return -EAGAIN;
}
}
@@ -889,7 +918,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
*/
struct flchip_shared *shared = chip->priv;
struct flchip *contender;
- spin_lock(&shared->lock);
+ mutex_lock(&shared->lock);
contender = shared->writing;
if (contender && contender != chip) {
/*
@@ -901,45 +930,45 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
* it'll happily send us to sleep. In any case, when
* get_chip returns success we're clear to go ahead.
*/
- ret = spin_trylock(contender->mutex);
- spin_unlock(&shared->lock);
+ ret = mutex_trylock(&contender->mutex);
+ mutex_unlock(&shared->lock);
if (!ret)
goto retry;
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
ret = chip_ready(map, contender, contender->start, mode);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
if (ret == -EAGAIN) {
- spin_unlock(contender->mutex);
+ mutex_unlock(&contender->mutex);
goto retry;
}
if (ret) {
- spin_unlock(contender->mutex);
+ mutex_unlock(&contender->mutex);
return ret;
}
- spin_lock(&shared->lock);
+ mutex_lock(&shared->lock);
/* We should not own chip if it is already
* in FL_SYNCING state. Put contender and retry. */
if (chip->state == FL_SYNCING) {
put_chip(map, contender, contender->start);
- spin_unlock(contender->mutex);
+ mutex_unlock(&contender->mutex);
goto retry;
}
- spin_unlock(contender->mutex);
+ mutex_unlock(&contender->mutex);
}
/* Check if we already have suspended erase
* on this chip. Sleep. */
if (mode == FL_ERASING && shared->erasing
&& shared->erasing->oldstate == FL_ERASING) {
- spin_unlock(&shared->lock);
+ mutex_unlock(&shared->lock);
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
goto retry;
}
@@ -947,7 +976,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
shared->writing = chip;
if (mode == FL_ERASING)
shared->erasing = chip;
- spin_unlock(&shared->lock);
+ mutex_unlock(&shared->lock);
}
ret = chip_ready(map, chip, adr, mode);
if (ret == -EAGAIN)
@@ -962,19 +991,19 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
if (chip->priv) {
struct flchip_shared *shared = chip->priv;
- spin_lock(&shared->lock);
+ mutex_lock(&shared->lock);
if (shared->writing == chip && chip->oldstate == FL_READY) {
/* We own the ability to write, but we're done */
shared->writing = shared->erasing;
if (shared->writing && shared->writing != chip) {
/* give back ownership to who we loaned it from */
struct flchip *loaner = shared->writing;
- spin_lock(loaner->mutex);
- spin_unlock(&shared->lock);
- spin_unlock(chip->mutex);
+ mutex_lock(&loaner->mutex);
+ mutex_unlock(&shared->lock);
+ mutex_unlock(&chip->mutex);
put_chip(map, loaner, loaner->start);
- spin_lock(chip->mutex);
- spin_unlock(loaner->mutex);
+ mutex_lock(&chip->mutex);
+ mutex_unlock(&loaner->mutex);
wake_up(&chip->wq);
return;
}
@@ -988,16 +1017,15 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
* Don't let the switch below mess things up since
* we don't have ownership to resume anything.
*/
- spin_unlock(&shared->lock);
+ mutex_unlock(&shared->lock);
wake_up(&chip->wq);
return;
}
- spin_unlock(&shared->lock);
+ mutex_unlock(&shared->lock);
}
switch(chip->oldstate) {
case FL_ERASING:
- chip->state = chip->oldstate;
/* 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
@@ -1021,8 +1049,6 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
case FL_READY:
case FL_STATUS:
case FL_JEDEC_QUERY:
- /* We should really make set_vpp() count, rather than doing this */
- DISABLE_VPP(map);
break;
default:
printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", map->name, chip->oldstate);
@@ -1144,7 +1170,7 @@ static int __xipram xip_wait_for_operation(
(void) map_read(map, adr);
xip_iprefetch();
local_irq_enable();
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
xip_iprefetch();
cond_resched();
@@ -1154,15 +1180,15 @@ static int __xipram xip_wait_for_operation(
* a suspended erase state. If so let's wait
* until it's done.
*/
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
while (chip->state != newstate) {
DECLARE_WAITQUEUE(wait, current);
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
}
/* Disallow XIP again */
local_irq_disable();
@@ -1218,10 +1244,10 @@ static int inval_cache_and_wait_for_operation(
int chip_state = chip->state;
unsigned int timeo, sleep_time, reset_timeo;
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
if (inval_len)
INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
timeo = chip_op_time_max;
if (!timeo)
@@ -1230,10 +1256,32 @@ static int inval_cache_and_wait_for_operation(
sleep_time = chip_op_time / 2;
for (;;) {
+ if (chip->state != chip_state) {
+ /* Someone's suspended the operation: sleep */
+ DECLARE_WAITQUEUE(wait, current);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&chip->wq, &wait);
+ mutex_unlock(&chip->mutex);
+ schedule();
+ remove_wait_queue(&chip->wq, &wait);
+ mutex_lock(&chip->mutex);
+ continue;
+ }
+
status = map_read(map, cmd_adr);
if (map_word_andequal(map, status, status_OK, status_OK))
break;
+ if (chip->erase_suspended && chip_state == FL_ERASING) {
+ /* Erase suspend occurred while sleep: reset timeout */
+ timeo = reset_timeo;
+ chip->erase_suspended = 0;
+ }
+ if (chip->write_suspended && chip_state == FL_WRITING) {
+ /* Write suspend occurred while sleep: reset timeout */
+ timeo = reset_timeo;
+ chip->write_suspended = 0;
+ }
if (!timeo) {
map_write(map, CMD(0x70), cmd_adr);
chip->state = FL_STATUS;
@@ -1241,7 +1289,7 @@ static int inval_cache_and_wait_for_operation(
}
/* OK Still waiting. Drop the lock, wait a while and retry. */
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
if (sleep_time >= 1000000/HZ) {
/*
* Half of the normal delay still remaining
@@ -1256,28 +1304,7 @@ static int inval_cache_and_wait_for_operation(
cond_resched();
timeo--;
}
- spin_lock(chip->mutex);
-
- while (chip->state != chip_state) {
- /* Someone's suspended the operation: sleep */
- DECLARE_WAITQUEUE(wait, current);
- set_current_state(TASK_UNINTERRUPTIBLE);
- add_wait_queue(&chip->wq, &wait);
- spin_unlock(chip->mutex);
- schedule();
- remove_wait_queue(&chip->wq, &wait);
- spin_lock(chip->mutex);
- }
- if (chip->erase_suspended && chip_state == FL_ERASING) {
- /* Erase suspend occured while sleep: reset timeout */
- timeo = reset_timeo;
- chip->erase_suspended = 0;
- }
- if (chip->write_suspended && chip_state == FL_WRITING) {
- /* Write suspend occured while sleep: reset timeout */
- timeo = reset_timeo;
- chip->write_suspended = 0;
- }
+ mutex_lock(&chip->mutex);
}
/* Done and happy. */
@@ -1302,7 +1329,7 @@ static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t a
/* Ensure cmd read/writes are aligned. */
cmd_addr = adr & ~(map_bankwidth(map)-1);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, cmd_addr, FL_POINT);
@@ -1313,7 +1340,7 @@ static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t a
chip->state = FL_POINT;
chip->ref_point_counter++;
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1327,7 +1354,7 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
int chipnum;
int ret = 0;
- if (!map->virt || (from + len > mtd->size))
+ if (!map->virt)
return -EINVAL;
/* Now lock the chip(s) to POINT state */
@@ -1337,7 +1364,6 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
ofs = from - (chipnum << cfi->chipshift);
*virt = map->virt + cfi->chips[chipnum].start + ofs;
- *retlen = 0;
if (phys)
*phys = map->phys + cfi->chips[chipnum].start + ofs;
@@ -1372,12 +1398,12 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
return 0;
}
-static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
unsigned long ofs;
- int chipnum;
+ int chipnum, err = 0;
/* Now unlock the chip(s) POINT state */
@@ -1385,7 +1411,7 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
- while (len) {
+ while (len && !err) {
unsigned long thislen;
struct flchip *chip;
@@ -1398,21 +1424,25 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
else
thislen = len;
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
if (chip->state == FL_POINT) {
chip->ref_point_counter--;
if(chip->ref_point_counter == 0)
chip->state = FL_READY;
- } else
- printk(KERN_ERR "%s: Warning: unpoint called on non pointed region\n", map->name); /* Should this give an error? */
+ } else {
+ printk(KERN_ERR "%s: Error: unpoint called on non pointed region\n", map->name);
+ err = -EINVAL;
+ }
put_chip(map, chip, chip->start);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
len -= thislen;
ofs = 0;
chipnum++;
}
+
+ return err;
}
static inline int do_read_onechip(struct map_info *map, struct flchip *chip, loff_t adr, size_t len, u_char *buf)
@@ -1426,10 +1456,10 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof
/* Ensure cmd read/writes are aligned. */
cmd_addr = adr & ~(map_bankwidth(map)-1);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, cmd_addr, FL_READY);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1443,7 +1473,7 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof
put_chip(map, chip, cmd_addr);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return 0;
}
@@ -1459,8 +1489,6 @@ static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, siz
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
- *retlen = 0;
-
while (len) {
unsigned long thislen;
@@ -1497,7 +1525,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
switch (mode) {
case FL_WRITING:
- write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41);
+ write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0x40) : CMD(0x41);
break;
case FL_OTP_WRITE:
write_cmd = CMD(0xc0);
@@ -1506,10 +1534,10 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
return -EINVAL;
}
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, mode);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1554,8 +1582,9 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, adr);
- out: put_chip(map, chip, adr);
- spin_unlock(chip->mutex);
+ out: DISABLE_VPP(map);
+ put_chip(map, chip, adr);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1568,10 +1597,6 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
int chipnum;
unsigned long ofs;
- *retlen = 0;
- if (!len)
- return 0;
-
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
@@ -1661,13 +1686,19 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
initial_adr = adr;
cmd_adr = adr & ~(wbufsize-1);
+ /* Sharp LH28F640BF chips need the first address for the
+ * Page Buffer Program command. See Table 5 of
+ * LH28F320BF, LH28F640BF, LH28F128BF Series (Appendix FUM00701) */
+ if (is_LH28F640BF(cfi))
+ cmd_adr = adr;
+
/* Let's determine this according to the interleave only once */
- write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9);
+ write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0xe8) : CMD(0xe9);
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, cmd_adr, FL_WRITING);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1797,8 +1828,9 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, cmd_adr);
- out: put_chip(map, chip, cmd_adr);
- spin_unlock(chip->mutex);
+ out: DISABLE_VPP(map);
+ put_chip(map, chip, cmd_adr);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1816,7 +1848,6 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
for (i = 0; i < count; i++)
len += vecs[i].iov_len;
- *retlen = 0;
if (!len)
return 0;
@@ -1877,10 +1908,10 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
adr += chip->start;
retry:
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, FL_ERASING);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1935,8 +1966,9 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
ret = -EIO;
} else if (chipstatus & 0x20 && retries--) {
printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
+ DISABLE_VPP(map);
put_chip(map, chip, adr);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
goto retry;
} else {
printk(KERN_ERR "%s: block erase failed at 0x%08lx (status 0x%lx)\n", map->name, adr, chipstatus);
@@ -1947,8 +1979,9 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, adr);
- out: put_chip(map, chip, adr);
- spin_unlock(chip->mutex);
+ out: DISABLE_VPP(map);
+ put_chip(map, chip, adr);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -1981,7 +2014,7 @@ static void cfi_intelext_sync (struct mtd_info *mtd)
for (i=0; !ret && i<cfi->numchips; i++) {
chip = &cfi->chips[i];
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, chip->start, FL_SYNCING);
if (!ret) {
@@ -1992,7 +2025,7 @@ static void cfi_intelext_sync (struct mtd_info *mtd)
* with the chip now anyway.
*/
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
/* Unlock the chips again */
@@ -2000,14 +2033,14 @@ static void cfi_intelext_sync (struct mtd_info *mtd)
for (i--; i >=0; i--) {
chip = &cfi->chips[i];
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
if (chip->state == FL_SYNCING) {
chip->state = chip->oldstate;
chip->oldstate = FL_READY;
wake_up(&chip->wq);
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
}
@@ -2048,15 +2081,15 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
{
struct cfi_private *cfi = map->fldrv_priv;
struct cfi_pri_intelext *extp = cfi->cmdset_priv;
- int udelay;
+ int mdelay;
int ret;
adr += chip->start;
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, adr, FL_LOCKING);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -2077,9 +2110,17 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
* If Instant Individual Block Locking supported then no need
* to delay.
*/
- udelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1000000/HZ : 0;
+ /*
+ * Unlocking may take up to 1.4 seconds on some Intel flashes. So
+ * lets use a max of 1.5 seconds (1500ms) as timeout.
+ *
+ * See "Clear Block Lock-Bits Time" on page 40 in
+ * "3 Volt Intel StrataFlash Memory" 28F128J3,28F640J3,28F320J3 manual
+ * from February 2003
+ */
+ mdelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1500 : 0;
- ret = WAIT_TIMEOUT(map, chip, adr, udelay, udelay * 100);
+ ret = WAIT_TIMEOUT(map, chip, adr, mdelay, mdelay * 1000);
if (ret) {
map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
@@ -2089,8 +2130,9 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
}
xip_enable(map, chip, adr);
-out: put_chip(map, chip, adr);
- spin_unlock(chip->mutex);
+ out: DISABLE_VPP(map);
+ put_chip(map, chip, adr);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -2142,6 +2184,13 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
return ret;
}
+static int cfi_intelext_is_locked(struct mtd_info *mtd, loff_t ofs,
+ uint64_t len)
+{
+ return cfi_varsize_frob(mtd, do_getlockstatus_oneblock,
+ ofs, len, NULL) ? 1 : 0;
+}
+
#ifdef CONFIG_MTD_OTP
typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip,
@@ -2155,10 +2204,10 @@ do_otp_read(struct map_info *map, struct flchip *chip, u_long offset,
struct cfi_private *cfi = map->fldrv_priv;
int ret;
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, chip->start, FL_JEDEC_QUERY);
if (ret) {
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return ret;
}
@@ -2177,7 +2226,7 @@ do_otp_read(struct map_info *map, struct flchip *chip, u_long offset,
INVALIDATE_CACHED_RANGE(map, chip->start + offset, size);
put_chip(map, chip, chip->start);
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
return 0;
}
@@ -2388,24 +2437,19 @@ static int cfi_intelext_lock_user_prot_reg(struct mtd_info *mtd,
NULL, do_otp_lock, 1);
}
-static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd,
- struct otp_info *buf, size_t len)
-{
- size_t retlen;
- int ret;
+static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd, size_t len,
+ size_t *retlen, struct otp_info *buf)
- ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 0);
- return ret ? : retlen;
+{
+ return cfi_intelext_otp_walk(mtd, 0, len, retlen, (u_char *)buf,
+ NULL, 0);
}
-static int cfi_intelext_get_user_prot_info(struct mtd_info *mtd,
- struct otp_info *buf, size_t len)
+static int cfi_intelext_get_user_prot_info(struct mtd_info *mtd, size_t len,
+ size_t *retlen, struct otp_info *buf)
{
- size_t retlen;
- int ret;
-
- ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 1);
- return ret ? : retlen;
+ return cfi_intelext_otp_walk(mtd, 0, len, retlen, (u_char *)buf,
+ NULL, 1);
}
#endif
@@ -2452,7 +2496,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
for (i=0; !ret && i<cfi->numchips; i++) {
chip = &cfi->chips[i];
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
switch (chip->state) {
case FL_READY:
@@ -2479,12 +2523,12 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
allowed to. Or should we return -EAGAIN, because the upper layers
ought to have already shut down anything which was using the device
anyway? The latter for now. */
- printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->oldstate);
+ printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->state);
ret = -EAGAIN;
case FL_PM_SUSPENDED:
break;
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
/* Unlock the chips again */
@@ -2493,7 +2537,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
for (i--; i >=0; i--) {
chip = &cfi->chips[i];
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
if (chip->state == FL_PM_SUSPENDED) {
/* No need to force it into a known state here,
@@ -2503,7 +2547,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
chip->oldstate = FL_READY;
wake_up(&chip->wq);
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
}
@@ -2522,12 +2566,10 @@ static void cfi_intelext_restore_locks(struct mtd_info *mtd)
if (!region->lockmap)
continue;
- for (block = 0; block < region->numblocks; block++) {
+ for_each_clear_bit(block, region->lockmap, region->numblocks) {
len = region->erasesize;
adr = region->offset + block * len;
-
- if (!test_bit(block, region->lockmap))
- cfi_intelext_unlock(mtd, adr, len);
+ cfi_intelext_unlock(mtd, adr, len);
}
}
}
@@ -2544,7 +2586,7 @@ static void cfi_intelext_resume(struct mtd_info *mtd)
chip = &cfi->chips[i];
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
/* Go to known state. Chip may have been power cycled */
if (chip->state == FL_PM_SUSPENDED) {
@@ -2553,7 +2595,7 @@ static void cfi_intelext_resume(struct mtd_info *mtd)
wake_up(&chip->wq);
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
if ((mtd->flags & MTD_POWERUP_LOCK)
@@ -2573,14 +2615,14 @@ static int cfi_intelext_reset(struct mtd_info *mtd)
/* force the completion of any ongoing operation
and switch to array mode so any bootloader in
flash is accessible for soft reboot. */
- spin_lock(chip->mutex);
+ mutex_lock(&chip->mutex);
ret = get_chip(map, chip, chip->start, FL_SHUTDOWN);
if (!ret) {
map_write(map, CMD(0xff), chip->start);
chip->state = FL_SHUTDOWN;
put_chip(map, chip, chip->start);
}
- spin_unlock(chip->mutex);
+ mutex_unlock(&chip->mutex);
}
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-16 00:02:31 +0000