*
* (C) 2000 Red Hat. GPL'd
*
- * $Id: cfi_cmdset_0001.c,v 1.126 2003/06/23 07:45:48 dwmw2 Exp $
+ * $Id: cfi_cmdset_0001.c,v 1.154 2004/08/09 13:19:43 dwmw2 Exp $
*
*
* 10/10/2000 Nicolas Pitre <nico@cam.org>
#include <linux/mtd/compatmac.h>
#include <linux/mtd/cfi.h>
+/* #define CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE */
+
// debugging, turns off buffer write mode if set to 1
#define FORCE_WORD_WRITE 0
static int cfi_intelext_read (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_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_read_fact_prot_reg (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_erase_varsize(struct mtd_info *, struct erase_info *);
struct mtd_info *cfi_cmdset_0001(struct map_info *, int);
static struct mtd_info *cfi_intelext_setup (struct map_info *);
+static int cfi_intelext_partition_fixup(struct map_info *, struct cfi_private **);
static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char **mtdbuf);
static void cfi_tell_features(struct cfi_pri_intelext *extp)
{
int i;
- 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(" - Suspend Program: %s\n", extp->FeatureSupport&4?"supported":"unsupported");
- printk(" - Legacy Lock/Unlock: %s\n", extp->FeatureSupport&8?"supported":"unsupported");
- printk(" - Queued Erase: %s\n", extp->FeatureSupport&16?"supported":"unsupported");
- printk(" - Instant block lock: %s\n", extp->FeatureSupport&32?"supported":"unsupported");
- printk(" - Protection Bits: %s\n", extp->FeatureSupport&64?"supported":"unsupported");
- printk(" - Page-mode read: %s\n", extp->FeatureSupport&128?"supported":"unsupported");
- printk(" - Synchronous read: %s\n", extp->FeatureSupport&256?"supported":"unsupported");
- for (i=9; i<32; i++) {
+ 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(" - Suspend Program: %s\n", extp->FeatureSupport&4?"supported":"unsupported");
+ printk(" - Legacy Lock/Unlock: %s\n", extp->FeatureSupport&8?"supported":"unsupported");
+ printk(" - Queued Erase: %s\n", extp->FeatureSupport&16?"supported":"unsupported");
+ printk(" - Instant block lock: %s\n", extp->FeatureSupport&32?"supported":"unsupported");
+ printk(" - Protection Bits: %s\n", extp->FeatureSupport&64?"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(" - Unknown Bit %X: supported\n", i);
}
}
printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n",
- extp->VccOptimal >> 8, extp->VccOptimal & 0xf);
+ extp->VccOptimal >> 4, extp->VccOptimal & 0xf);
if (extp->VppOptimal)
printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n",
- extp->VppOptimal >> 8, extp->VppOptimal & 0xf);
+ 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 */
+static void fixup_intel_strataflash(struct map_info *map, void* param)
+{
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+
+ printk(KERN_WARNING "cfi_cmdset_0001: Suspend "
+ "erase on write disabled.\n");
+ extp->SuspendCmdSupport &= ~1;
+}
+#endif
+
+static void fixup_st_m28w320ct(struct map_info *map, void* param)
+{
+ struct cfi_private *cfi = map->fldrv_priv;
+
+ cfi->cfiq->BufWriteTimeoutTyp = 0; /* Not supported */
+ cfi->cfiq->BufWriteTimeoutMax = 0; /* Not supported */
}
+
+static void fixup_st_m28w320cb(struct map_info *map, void* param)
+{
+ 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;
+};
+
+static struct cfi_fixup fixup_table[] = {
+#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
+ {
+ CFI_MFR_ANY, CFI_ID_ANY,
+ fixup_intel_strataflash, NULL
+ },
#endif
+ {
+ 0x0020, /* STMicroelectronics */
+ 0x00ba, /* M28W320CT */
+ fixup_st_m28w320ct, NULL
+ }, {
+ 0x0020, /* STMicroelectronics */
+ 0x00bb, /* M28W320CB */
+ fixup_st_m28w320cb, NULL
+ }, {
+ 0, 0, NULL, NULL
+ }
+};
/* This routine is made available to other mtd code via
* inter_module_register. It must only be accessed through
{
struct cfi_private *cfi = map->fldrv_priv;
int i;
- __u32 base = cfi->chips[0].start;
if (cfi->cfi_mode == CFI_MODE_CFI) {
/*
*/
__u16 adr = primary?cfi->cfiq->P_ADR:cfi->cfiq->A_ADR;
struct cfi_pri_intelext *extp;
- int ofs_factor = cfi->interleave * cfi->device_type;
- //printk(" Intel/Sharp Extended Query Table at 0x%4.4X\n", adr);
- if (!adr)
+ extp = (struct cfi_pri_intelext*)cfi_read_pri(map, adr, sizeof(*extp), "Intel/Sharp");
+ if (!extp)
return NULL;
-
- /* Switch it into Query Mode */
- cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL);
-
- extp = kmalloc(sizeof(*extp), GFP_KERNEL);
- if (!extp) {
- printk(KERN_ERR "Failed to allocate memory\n");
- return NULL;
- }
-
- /* Read in the Extended Query Table */
- for (i=0; i<sizeof(*extp); i++) {
- ((unsigned char *)extp)[i] =
- cfi_read_query(map, (base+((adr+i)*ofs_factor)));
- }
-
- if (extp->MajorVersion != '1' ||
- (extp->MinorVersion < '0' || extp->MinorVersion > '3')) {
- printk(KERN_WARNING " Unknown IntelExt 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);
+
+ /* Install our own private info structure */
+ cfi->cmdset_priv = extp;
+
+ cfi_fixup(map, fixup_table);
#ifdef DEBUG_CFI_FEATURES
/* Tell the user about it in lots of lovely detail */
#endif
if(extp->SuspendCmdSupport & 1) {
-//#define CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
-#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
-/* Some Intel Strata Flash prior to FPO revision C has bugs in this area */
- printk(KERN_WARNING "cfi_cmdset_0001: Suspend "
- "erase on write disabled.\n");
- extp->SuspendCmdSupport &= ~1;
-#else
printk(KERN_NOTICE "cfi_cmdset_0001: Erase suspend on write enabled\n");
-#endif
}
- /* Install our own private info structure */
- cfi->cmdset_priv = extp;
}
for (i=0; i< cfi->numchips; i++) {
map->fldrv = &cfi_intelext_chipdrv;
- /* Make sure it's in read mode */
- cfi_send_gen_cmd(0xff, 0x55, base, map, cfi, cfi->device_type, NULL);
return cfi_intelext_setup(map);
}
printk(KERN_INFO "Using word write method\n" );
mtd->write = cfi_intelext_write_words;
}
+#if 0
mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
+#endif
mtd->sync = cfi_intelext_sync;
mtd->lock = cfi_intelext_lock;
mtd->unlock = cfi_intelext_unlock;
mtd->flags = MTD_CAP_NORFLASH;
map->fldrv = &cfi_intelext_chipdrv;
mtd->name = map->name;
+
+ /* This function has the potential to distort the reality
+ a bit and therefore should be called last. */
+ if (cfi_intelext_partition_fixup(map, &cfi) != 0)
+ goto setup_err;
+
__module_get(THIS_MODULE);
return mtd;
kfree(mtd);
}
kfree(cfi->cmdset_priv);
- kfree(cfi->cfiq);
return NULL;
}
+static int cfi_intelext_partition_fixup(struct map_info *map,
+ struct cfi_private **pcfi)
+{
+ struct cfi_private *cfi = *pcfi;
+ struct cfi_pri_intelext *extp = cfi->cmdset_priv;
+
+ /*
+ * Probing of multi-partition flash ships.
+ *
+ * This is extremely crude at the moment and should probably be
+ * extracted entirely from the Intel extended query data instead.
+ * Right now a L18 flash is assumed if multiple operations is
+ * detected.
+ *
+ * To support multiple partitions when available, we simply arrange
+ * for each of them to have their own flchip structure even if they
+ * are on the same physical chip. This means completely recreating
+ * a new cfi_private structure right here which is a blatent code
+ * layering violation, but this is still the least intrusive
+ * arrangement at this point. This can be rearranged in the future
+ * if someone feels motivated enough. --nico
+ */
+ if (extp && extp->FeatureSupport & (1 << 9)) {
+ struct cfi_private *newcfi;
+ struct flchip *chip;
+ struct flchip_shared *shared;
+ int numparts, partshift, numvirtchips, i, j;
+
+ /*
+ * The L18 flash memory array is divided
+ * into multiple 8-Mbit partitions.
+ */
+ numparts = 1 << (cfi->cfiq->DevSize - 20);
+ partshift = 20 + __ffs(cfi->interleave);
+ numvirtchips = cfi->numchips * numparts;
+
+ newcfi = kmalloc(sizeof(struct cfi_private) + numvirtchips * sizeof(struct flchip), GFP_KERNEL);
+ if (!newcfi)
+ return -ENOMEM;
+ shared = kmalloc(sizeof(struct flchip_shared) * cfi->numchips, GFP_KERNEL);
+ if (!shared) {
+ kfree(newcfi);
+ return -ENOMEM;
+ }
+ memcpy(newcfi, cfi, sizeof(struct cfi_private));
+ newcfi->numchips = numvirtchips;
+ newcfi->chipshift = partshift;
+
+ chip = &newcfi->chips[0];
+ for (i = 0; i < cfi->numchips; i++) {
+ shared[i].writing = shared[i].erasing = NULL;
+ spin_lock_init(&shared[i].lock);
+ for (j = 0; j < numparts; j++) {
+ *chip = cfi->chips[i];
+ chip->start += j << partshift;
+ chip->priv = &shared[i];
+ /* those should be reset too since
+ they create memory references. */
+ init_waitqueue_head(&chip->wq);
+ spin_lock_init(&chip->_spinlock);
+ chip->mutex = &chip->_spinlock;
+ chip++;
+ }
+ }
+
+ printk(KERN_DEBUG "%s: %d sets of %d interleaved chips "
+ "--> %d partitions of %#x bytes\n",
+ map->name, cfi->numchips, cfi->interleave,
+ newcfi->numchips, 1<<newcfi->chipshift);
+
+ map->fldrv_priv = newcfi;
+ *pcfi = newcfi;
+ kfree(cfi);
+ }
+
+ return 0;
+}
+
/*
* *********** CHIP ACCESS FUNCTIONS ***********
*/
{
DECLARE_WAITQUEUE(wait, current);
struct cfi_private *cfi = map->fldrv_priv;
- cfi_word status, status_OK = CMD(0x80);
+ map_word status, status_OK = CMD(0x80), status_PWS = CMD(0x01);
unsigned long timeo;
- struct cfi_pri_intelext *cfip = (struct cfi_pri_intelext *)cfi->cmdset_priv;
+ struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
resettime:
timeo = jiffies + HZ;
retry:
+ if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING)) {
+ /*
+ * OK. We have possibility for contension on the write/erase
+ * operations which are global to the real chip and not per
+ * partition. So let's fight it over in the partition which
+ * currently has authority on the operation.
+ *
+ * The rules are as follows:
+ *
+ * - any write operation must own shared->writing.
+ *
+ * - any erase operation must own _both_ shared->writing and
+ * shared->erasing.
+ *
+ * - contension arbitration is handled in the owner's context.
+ *
+ * The 'shared' struct can be read when its lock is taken.
+ * However any writes to it can only be made when the current
+ * owner's lock is also held.
+ */
+ struct flchip_shared *shared = chip->priv;
+ struct flchip *contender;
+ spin_lock(&shared->lock);
+ contender = shared->writing;
+ if (contender && contender != chip) {
+ /*
+ * The engine to perform desired operation on this
+ * partition is already in use by someone else.
+ * Let's fight over it in the context of the chip
+ * currently using it. If it is possible to suspend,
+ * that other partition will do just that, otherwise
+ * it'll happily send us to sleep. In any case, when
+ * get_chip returns success we're clear to go ahead.
+ */
+ int ret = spin_trylock(contender->mutex);
+ spin_unlock(&shared->lock);
+ if (!ret)
+ goto retry;
+ spin_unlock(chip->mutex);
+ ret = get_chip(map, contender, contender->start, mode);
+ spin_lock(chip->mutex);
+ if (ret) {
+ spin_unlock(contender->mutex);
+ return ret;
+ }
+ timeo = jiffies + HZ;
+ spin_lock(&shared->lock);
+ }
+
+ /* We now own it */
+ shared->writing = chip;
+ if (mode == FL_ERASING)
+ shared->erasing = chip;
+ if (contender && contender != chip)
+ spin_unlock(contender->mutex);
+ spin_unlock(&shared->lock);
+ }
+
switch (chip->state) {
case FL_STATUS:
for (;;) {
- status = cfi_read(map, adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
+ break;
+
+ /* At this point we're fine with write operations
+ in other partitions as they don't conflict. */
+ if (chip->priv && map_word_andequal(map, status, status_PWS, status_PWS))
break;
if (time_after(jiffies, timeo)) {
- printk(KERN_ERR "Waiting for chip to be ready timed out. Status %llx\n",
- (long long)status);
- spin_unlock(chip->mutex);
+ printk(KERN_ERR "Waiting for chip to be ready timed out. Status %lx\n",
+ status.x[0]);
return -EIO;
}
spin_unlock(chip->mutex);
/* Erase suspend */
- cfi_write(map, CMD(0xB0), adr);
+ map_write(map, CMD(0xB0), adr);
/* If the flash has finished erasing, then 'erase suspend'
* appears to make some (28F320) flash devices switch to
* 'read' mode. Make sure that we switch to 'read status'
* mode so we get the right data. --rmk
*/
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
chip->oldstate = FL_ERASING;
chip->state = FL_ERASE_SUSPENDING;
chip->erase_suspended = 1;
for (;;) {
- status = cfi_read(map, adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
if (time_after(jiffies, timeo)) {
/* Urgh. Resume and pretend we weren't here. */
- cfi_write(map, CMD(0xd0), adr);
+ map_write(map, CMD(0xd0), adr);
/* Make sure we're in 'read status' mode if it had finished */
- cfi_write(map, CMD(0x70), adr);
+ 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%x\n", status);
+ "suspended: status = 0x%lx\n", status.x[0]);
return -EIO;
}
{
struct cfi_private *cfi = map->fldrv_priv;
+ if (chip->priv) {
+ struct flchip_shared *shared = chip->priv;
+ spin_lock(&shared->lock);
+ if (shared->writing == chip) {
+ /* 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);
+ put_chip(map, loaner, loaner->start);
+ spin_lock(chip->mutex);
+ spin_unlock(loaner->mutex);
+ } else {
+ if (chip->oldstate != FL_ERASING) {
+ shared->erasing = NULL;
+ if (chip->oldstate != FL_WRITING)
+ shared->writing = NULL;
+ }
+ spin_unlock(&shared->lock);
+ }
+ }
+ }
+
switch(chip->oldstate) {
case FL_ERASING:
chip->state = chip->oldstate;
sending the 0x70 (Read Status) command to an erasing
chip and expecting it to be ignored, that's what we
do. */
- cfi_write(map, CMD(0xd0), adr);
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0xd0), adr);
+ map_write(map, CMD(0x70), adr);
chip->oldstate = FL_READY;
chip->state = FL_ERASING;
break;
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;
adr += chip->start;
/* Ensure cmd read/writes are aligned. */
- cmd_addr = adr & ~(CFIDEV_BUSWIDTH-1);
+ cmd_addr = adr & ~(map_bankwidth(map)-1);
spin_lock(chip->mutex);
if (!ret) {
if (chip->state != FL_POINT && chip->state != FL_READY)
- cfi_write(map, CMD(0xff), cmd_addr);
+ map_write(map, CMD(0xff), cmd_addr);
chip->state = FL_POINT;
chip->ref_point_counter++;
int chipnum;
int ret = 0;
- if (from + len > mtd->size)
+ if (!map->virt || (from + len > mtd->size))
return -EINVAL;
*mtdbuf = (void *)map->virt + from;
- if(*mtdbuf == NULL)
- return -EINVAL; /* can not point this region */
*retlen = 0;
/* Now lock the chip(s) to POINT state */
adr += chip->start;
/* Ensure cmd read/writes are aligned. */
- cmd_addr = adr & ~(CFIDEV_BUSWIDTH-1);
+ cmd_addr = adr & ~(map_bankwidth(map)-1);
spin_lock(chip->mutex);
ret = get_chip(map, chip, cmd_addr, FL_READY);
}
if (chip->state != FL_POINT && chip->state != FL_READY) {
- cfi_write(map, CMD(0xff), cmd_addr);
+ map_write(map, CMD(0xff), cmd_addr);
chip->state = FL_READY;
}
}
return ret;
}
-
+#if 0
static int cfi_intelext_read_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, int base_offst, int reg_sz)
{
struct map_info *map = mtd->priv;
}
if (chip->state != FL_JEDEC_QUERY) {
- cfi_write(map, CMD(0x90), chip->start);
+ map_write(map, CMD(0x90), chip->start);
chip->state = FL_JEDEC_QUERY;
}
return cfi_intelext_read_prot_reg(mtd, from, len, retlen, buf, base_offst, reg_sz);
}
+#endif
-
-static int do_write_oneword(struct map_info *map, struct flchip *chip, unsigned long adr, cfi_word datum)
+static int do_write_oneword(struct map_info *map, struct flchip *chip, unsigned long adr, map_word datum)
{
struct cfi_private *cfi = map->fldrv_priv;
- cfi_word status, status_OK;
+ map_word status, status_OK;
unsigned long timeo;
int z, ret=0;
}
ENABLE_VPP(map);
- cfi_write(map, CMD(0x40), adr);
- cfi_write(map, datum, adr);
+ map_write(map, CMD(0x40), adr);
+ map_write(map, datum, adr);
chip->state = FL_WRITING;
spin_unlock(chip->mutex);
+ INVALIDATE_CACHED_RANGE(map, adr, map_bankwidth(map));
cfi_udelay(chip->word_write_time);
spin_lock(chip->mutex);
continue;
}
- status = cfi_read(map, adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
/* OK Still waiting */
/* Done and happy. */
chip->state = FL_STATUS;
/* check for lock bit */
- if (status & CMD(0x02)) {
+ if (map_word_bitsset(map, status, CMD(0x02))) {
/* clear status */
- cfi_write(map, CMD(0x50), adr);
+ map_write(map, CMD(0x50), adr);
/* put back into read status register mode */
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
ret = -EROFS;
}
out:
ofs = to - (chipnum << cfi->chipshift);
/* If it's not bus-aligned, do the first byte write */
- if (ofs & (CFIDEV_BUSWIDTH-1)) {
- unsigned long bus_ofs = ofs & ~(CFIDEV_BUSWIDTH-1);
+ if (ofs & (map_bankwidth(map)-1)) {
+ unsigned long bus_ofs = ofs & ~(map_bankwidth(map)-1);
int gap = ofs - bus_ofs;
- int i = 0, n = 0;
- u_char tmp_buf[8];
- cfi_word datum;
-
- while (gap--)
- tmp_buf[i++] = 0xff;
- while (len && i < CFIDEV_BUSWIDTH)
- tmp_buf[i++] = buf[n++], len--;
- while (i < CFIDEV_BUSWIDTH)
- tmp_buf[i++] = 0xff;
-
- if (cfi_buswidth_is_2()) {
- datum = *(__u16*)tmp_buf;
- } else if (cfi_buswidth_is_4()) {
- datum = *(__u32*)tmp_buf;
- } else if (cfi_buswidth_is_8()) {
- datum = *(__u64*)tmp_buf;
- } else {
- return -EINVAL; /* should never happen, but be safe */
- }
+ int n;
+ map_word datum;
+
+ n = min_t(int, len, map_bankwidth(map)-gap);
+ datum = map_word_ff(map);
+ datum = map_word_load_partial(map, datum, buf, gap, n);
ret = do_write_oneword(map, &cfi->chips[chipnum],
bus_ofs, datum);
if (ret)
return ret;
-
+
+ len -= n;
ofs += n;
buf += n;
(*retlen) += n;
}
}
- while(len >= CFIDEV_BUSWIDTH) {
- cfi_word datum;
-
- if (cfi_buswidth_is_1()) {
- datum = *(__u8*)buf;
- } else if (cfi_buswidth_is_2()) {
- datum = *(__u16*)buf;
- } else if (cfi_buswidth_is_4()) {
- datum = *(__u32*)buf;
- } else if (cfi_buswidth_is_8()) {
- datum = *(__u64*)buf;
- } else {
- return -EINVAL;
- }
+ while(len >= map_bankwidth(map)) {
+ map_word datum = map_word_load(map, buf);
ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, datum);
if (ret)
return ret;
- ofs += CFIDEV_BUSWIDTH;
- buf += CFIDEV_BUSWIDTH;
- (*retlen) += CFIDEV_BUSWIDTH;
- len -= CFIDEV_BUSWIDTH;
+ ofs += map_bankwidth(map);
+ buf += map_bankwidth(map);
+ (*retlen) += map_bankwidth(map);
+ len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
chipnum ++;
}
}
- if (len & (CFIDEV_BUSWIDTH-1)) {
- int i = 0, n = 0;
- u_char tmp_buf[8];
- cfi_word datum;
-
- while (len--)
- tmp_buf[i++] = buf[n++];
- while (i < CFIDEV_BUSWIDTH)
- tmp_buf[i++] = 0xff;
-
- if (cfi_buswidth_is_2()) {
- datum = *(__u16*)tmp_buf;
- } else if (cfi_buswidth_is_4()) {
- datum = *(__u32*)tmp_buf;
- } else if (cfi_buswidth_is_8()) {
- datum = *(__u64*)tmp_buf;
- } else {
- return -EINVAL; /* should never happen, but be safe */
- }
+ if (len & (map_bankwidth(map)-1)) {
+ map_word datum;
+
+ datum = map_word_ff(map);
+ datum = map_word_load_partial(map, datum, buf, 0, len);
ret = do_write_oneword(map, &cfi->chips[chipnum],
ofs, datum);
if (ret)
return ret;
- (*retlen) += n;
+ (*retlen) += len;
}
return 0;
unsigned long adr, const u_char *buf, int len)
{
struct cfi_private *cfi = map->fldrv_priv;
- cfi_word status, status_OK;
+ map_word status, status_OK;
unsigned long cmd_adr, timeo;
int wbufsize, z, ret=0, bytes, words;
- wbufsize = CFIDEV_INTERLEAVE << cfi->cfiq->MaxBufWriteSize;
+ wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
adr += chip->start;
cmd_adr = adr & ~(wbufsize-1);
return ret;
}
- if (chip->state != FL_STATUS)
- cfi_write(map, CMD(0x70), cmd_adr);
-
- status = cfi_read(map, 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".
So we must check here and reset those bits if they're set. Otherwise
we're just pissing in the wind */
- if (status & CMD(0x30)) {
- printk(KERN_WARNING "SR.4 or SR.5 bits set in buffer write (status %x). Clearing.\n", status);
- cfi_write(map, CMD(0x50), cmd_adr);
- cfi_write(map, CMD(0x70), cmd_adr);
+ if (chip->state != FL_STATUS)
+ map_write(map, CMD(0x70), cmd_adr);
+ status = map_read(map, cmd_adr);
+ if (map_word_bitsset(map, status, CMD(0x30))) {
+ printk(KERN_WARNING "SR.4 or SR.5 bits set in buffer write (status %lx). Clearing.\n", status.x[0]);
+ map_write(map, CMD(0x50), cmd_adr);
+ map_write(map, CMD(0x70), cmd_adr);
}
+
ENABLE_VPP(map);
chip->state = FL_WRITING_TO_BUFFER;
z = 0;
for (;;) {
- cfi_write(map, CMD(0xe8), cmd_adr);
+ map_write(map, CMD(0xe8), cmd_adr);
- status = cfi_read(map, cmd_adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, cmd_adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
spin_unlock(chip->mutex);
if (++z > 20) {
/* Argh. Not ready for write to buffer */
- cfi_write(map, CMD(0x70), cmd_adr);
+ map_write(map, CMD(0x70), cmd_adr);
chip->state = FL_STATUS;
- printk(KERN_ERR "Chip not ready for buffer write. Xstatus = %llx, status = %llx\n", (__u64)status, (__u64)cfi_read(map, cmd_adr));
+ printk(KERN_ERR "Chip not ready for buffer write. Xstatus = %lx, status = %lx\n",
+ status.x[0], map_read(map, cmd_adr).x[0]);
/* Odd. Clear status bits */
- cfi_write(map, CMD(0x50), cmd_adr);
- cfi_write(map, CMD(0x70), cmd_adr);
+ map_write(map, CMD(0x50), cmd_adr);
+ map_write(map, CMD(0x70), cmd_adr);
ret = -EIO;
goto out;
}
}
/* Write length of data to come */
- bytes = len & (CFIDEV_BUSWIDTH-1);
- words = len / CFIDEV_BUSWIDTH;
- cfi_write(map, CMD(words - !bytes), cmd_adr );
+ bytes = len & (map_bankwidth(map)-1);
+ words = len / map_bankwidth(map);
+ map_write(map, CMD(words - !bytes), cmd_adr );
/* Write data */
z = 0;
- while(z < words * CFIDEV_BUSWIDTH) {
- if (cfi_buswidth_is_1()) {
- u8 *b = (u8 *)buf;
-
- map_write8 (map, *b++, adr+z);
- buf = (const u_char *)b;
- } else if (cfi_buswidth_is_2()) {
- u16 *b = (u16 *)buf;
-
- map_write16 (map, *b++, adr+z);
- buf = (const u_char *)b;
- } else if (cfi_buswidth_is_4()) {
- u32 *b = (u32 *)buf;
-
- map_write32 (map, *b++, adr+z);
- buf = (const u_char *)b;
- } else if (cfi_buswidth_is_8()) {
- u64 *b = (u64 *)buf;
-
- map_write64 (map, *b++, adr+z);
- buf = (const u_char *)b;
- } else {
- ret = -EINVAL;
- goto out;
- }
- z += CFIDEV_BUSWIDTH;
+ while(z < words * map_bankwidth(map)) {
+ map_word datum = map_word_load(map, buf);
+ map_write(map, datum, adr+z);
+
+ z += map_bankwidth(map);
+ buf += map_bankwidth(map);
}
+
if (bytes) {
- int i = 0, n = 0;
- u_char tmp_buf[8], *tmp_p = tmp_buf;
-
- while (bytes--)
- tmp_buf[i++] = buf[n++];
- while (i < CFIDEV_BUSWIDTH)
- tmp_buf[i++] = 0xff;
- if (cfi_buswidth_is_2()) {
- u16 *b = (u16 *)tmp_p;
-
- map_write16 (map, *b++, adr+z);
- tmp_p = (u_char *)b;
- } else if (cfi_buswidth_is_4()) {
- u32 *b = (u32 *)tmp_p;
-
- map_write32 (map, *b++, adr+z);
- tmp_p = (u_char *)b;
- } else if (cfi_buswidth_is_8()) {
- u64 *b = (u64 *)tmp_p;
-
- map_write64 (map, *b++, adr+z);
- tmp_p = (u_char *)b;
- } else {
- ret = -EINVAL;
- goto out;
- }
+ map_word datum;
+
+ datum = map_word_ff(map);
+ datum = map_word_load_partial(map, datum, buf, 0, bytes);
+ map_write(map, datum, adr+z);
}
+
/* GO GO GO */
- cfi_write(map, CMD(0xd0), cmd_adr);
+ map_write(map, CMD(0xd0), cmd_adr);
chip->state = FL_WRITING;
spin_unlock(chip->mutex);
+ INVALIDATE_CACHED_RANGE(map, adr, len);
cfi_udelay(chip->buffer_write_time);
spin_lock(chip->mutex);
continue;
}
- status = cfi_read(map, cmd_adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, cmd_adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
/* OK Still waiting */
chip->state = FL_STATUS;
/* check for lock bit */
- if (status & CMD(0x02)) {
+ if (map_word_bitsset(map, status, CMD(0x02))) {
/* clear status */
- cfi_write(map, CMD(0x50), cmd_adr);
+ map_write(map, CMD(0x50), cmd_adr);
/* put back into read status register mode */
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
ret = -EROFS;
}
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
- int wbufsize = CFIDEV_INTERLEAVE << cfi->cfiq->MaxBufWriteSize;
+ int wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
int ret = 0;
int chipnum;
unsigned long ofs;
ofs = to - (chipnum << cfi->chipshift);
/* If it's not bus-aligned, do the first word write */
- if (ofs & (CFIDEV_BUSWIDTH-1)) {
- size_t local_len = (-ofs)&(CFIDEV_BUSWIDTH-1);
+ 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,
}
}
- /* Write buffer is worth it only if more than one word to write... */
while(len) {
/* We must not cross write block boundaries */
int size = wbufsize - (ofs & (wbufsize-1));
}
typedef int (*varsize_frob_t)(struct map_info *map, struct flchip *chip,
- unsigned long adr, void *thunk);
+ unsigned long adr, int len, void *thunk);
static int cfi_intelext_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob,
loff_t ofs, size_t len, void *thunk)
i=first;
while(len) {
- ret = (*frob)(map, &cfi->chips[chipnum], adr, thunk);
+ unsigned long chipmask;
+ int size = regions[i].erasesize;
+
+ ret = (*frob)(map, &cfi->chips[chipnum], adr, size, thunk);
if (ret)
return ret;
- adr += regions[i].erasesize;
- len -= regions[i].erasesize;
+ adr += size;
+ len -= size;
- if (adr % (1<< cfi->chipshift) == ((regions[i].offset + (regions[i].erasesize * regions[i].numblocks)) %( 1<< cfi->chipshift)))
+ chipmask = (1 << cfi->chipshift) - 1;
+ if ((adr & chipmask) == ((regions[i].offset + size * regions[i].numblocks) & chipmask))
i++;
if (adr >> cfi->chipshift) {
}
-static int do_erase_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, void *thunk)
+static int do_erase_oneblock(struct map_info *map, struct flchip *chip,
+ unsigned long adr, int len, void *thunk)
{
struct cfi_private *cfi = map->fldrv_priv;
- cfi_word status, status_OK;
+ map_word status, status_OK;
unsigned long timeo;
int retries = 3;
DECLARE_WAITQUEUE(wait, current);
ENABLE_VPP(map);
/* Clear the status register first */
- cfi_write(map, CMD(0x50), adr);
+ map_write(map, CMD(0x50), adr);
/* Now erase */
- cfi_write(map, CMD(0x20), adr);
- cfi_write(map, CMD(0xD0), adr);
+ map_write(map, CMD(0x20), adr);
+ map_write(map, CMD(0xD0), adr);
chip->state = FL_ERASING;
chip->erase_suspended = 0;
spin_unlock(chip->mutex);
+ INVALIDATE_CACHED_RANGE(map, adr, len);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((chip->erase_time*HZ)/(2*1000));
spin_lock(chip->mutex);
chip->erase_suspended = 0;
}
- status = cfi_read(map, adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
- printk(KERN_ERR "waiting for erase at %08lx to complete timed out. Xstatus = %llx, status = %llx.\n",
- adr, (__u64)status, (__u64)cfi_read(map, adr));
+ printk(KERN_ERR "waiting for erase at %08lx to complete timed out. Xstatus = %lx, status = %lx.\n",
+ adr, status.x[0], map_read(map, adr).x[0]);
/* Clear status bits */
- cfi_write(map, CMD(0x50), adr);
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x50), adr);
+ map_write(map, CMD(0x70), adr);
DISABLE_VPP(map);
spin_unlock(chip->mutex);
return -EIO;
ret = 0;
/* We've broken this before. It doesn't hurt to be safe */
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
- status = cfi_read(map, adr);
+ status = map_read(map, adr);
/* check for lock bit */
- if (status & CMD(0x3a)) {
- unsigned char chipstatus = status;
- if (status != CMD(status & 0xff)) {
- int i;
- for (i = 1; i<CFIDEV_INTERLEAVE; i++) {
- chipstatus |= status >> (cfi->device_type * 8);
+ if (map_word_bitsset(map, status, CMD(0x3a))) {
+ unsigned char chipstatus = status.x[0];
+ if (!map_word_equal(map, status, CMD(chipstatus))) {
+ int i, w;
+ for (w=0; w<map_words(map); w++) {
+ for (i = 0; i<cfi_interleave(cfi); i++) {
+ chipstatus |= status.x[w] >> (cfi->device_type * 8);
+ }
}
- printk(KERN_WARNING "Status is not identical for all chips: 0x%llx. Merging to give 0x%02x\n", (__u64)status, chipstatus);
+ printk(KERN_WARNING "Status is not identical for all chips: 0x%lx. Merging to give 0x%02x\n",
+ status.x[0], chipstatus);
}
/* Reset the error bits */
- cfi_write(map, CMD(0x50), adr);
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x50), adr);
+ map_write(map, CMD(0x70), adr);
if ((chipstatus & 0x30) == 0x30) {
- printk(KERN_NOTICE "Chip reports improper command sequence: status 0x%llx\n", (__u64)status);
+ printk(KERN_NOTICE "Chip reports improper command sequence: status 0x%x\n", chipstatus);
ret = -EIO;
} 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%llx\n", (__u64)status);
+ printk(KERN_WARNING "Chip reports voltage low on erase: status 0x%x\n", chipstatus);
ret = -EIO;
} else if (chipstatus & 0x20) {
if (retries--) {
- printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%llx. Retrying...\n", adr, (__u64)status);
+ printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%x. Retrying...\n", adr, chipstatus);
timeo = jiffies + HZ;
chip->state = FL_STATUS;
spin_unlock(chip->mutex);
goto retry;
}
- printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%llx\n", adr, (__u64)status);
+ printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%x\n", adr, chipstatus);
ret = -EIO;
}
}
ofs = instr->addr;
len = instr->len;
- ret = cfi_intelext_varsize_frob(mtd, do_erase_oneblock, ofs, len, 0);
+ ret = cfi_intelext_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL);
if (ret)
return ret;
instr->state = MTD_ERASE_DONE;
- if (instr->callback)
- instr->callback(instr);
+ mtd_erase_callback(instr);
return 0;
}
}
#ifdef DEBUG_LOCK_BITS
-static int do_printlockstatus_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, void *thunk)
+static int do_printlockstatus_oneblock(struct map_info *map, struct flchip *chip,
+ unsigned long adr, int len, void *thunk)
{
struct cfi_private *cfi = map->fldrv_priv;
int ofs_factor = cfi->interleave * cfi->device_type;
cfi_send_gen_cmd(0x90, 0x55, 0, map, cfi, cfi->device_type, NULL);
printk(KERN_DEBUG "block status register for 0x%08lx is %x\n",
adr, cfi_read_query(map, adr+(2*ofs_factor)));
- cfi_send_gen_cmd(0xff, 0x55, 0, map, cfi, cfi->device_type, NULL);
-
+ chip->state = FL_JEDEC_QUERY;
return 0;
}
#endif
#define DO_XXLOCK_ONEBLOCK_LOCK ((void *) 1)
#define DO_XXLOCK_ONEBLOCK_UNLOCK ((void *) 2)
-static int do_xxlock_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, void *thunk)
+static int do_xxlock_oneblock(struct map_info *map, struct flchip *chip,
+ unsigned long adr, int len, void *thunk)
{
struct cfi_private *cfi = map->fldrv_priv;
- cfi_word status, status_OK;
+ map_word status, status_OK;
unsigned long timeo = jiffies + HZ;
int ret;
}
ENABLE_VPP(map);
- cfi_write(map, CMD(0x60), adr);
+ map_write(map, CMD(0x60), adr);
if (thunk == DO_XXLOCK_ONEBLOCK_LOCK) {
- cfi_write(map, CMD(0x01), adr);
+ map_write(map, CMD(0x01), adr);
chip->state = FL_LOCKING;
} else if (thunk == DO_XXLOCK_ONEBLOCK_UNLOCK) {
- cfi_write(map, CMD(0xD0), adr);
+ map_write(map, CMD(0xD0), adr);
chip->state = FL_UNLOCKING;
} else
BUG();
timeo = jiffies + (HZ*20);
for (;;) {
- status = cfi_read(map, adr);
- if ((status & status_OK) == status_OK)
+ status = map_read(map, adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
break;
/* OK Still waiting */
if (time_after(jiffies, timeo)) {
- cfi_write(map, CMD(0x70), adr);
+ map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
- printk(KERN_ERR "waiting for unlock to complete timed out. Xstatus = %llx, status = %llx.\n", (__u64)status, (__u64)cfi_read(map, adr));
+ printk(KERN_ERR "waiting for unlock to complete timed out. Xstatus = %lx, status = %lx.\n",
+ status.x[0], map_read(map, adr).x[0]);
DISABLE_VPP(map);
spin_unlock(chip->mutex);
return -EIO;
ofs, len, DO_XXLOCK_ONEBLOCK_LOCK);
#ifdef DEBUG_LOCK_BITS
- printk(KERN_DEBUG
- "%s: lock status after, ret=%d\n", __FUNCTION__, ret);
+ printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
+ __FUNCTION__, ret);
cfi_intelext_varsize_frob(mtd, do_printlockstatus_oneblock,
ofs, len, 0);
#endif
ofs, len, DO_XXLOCK_ONEBLOCK_UNLOCK);
#ifdef DEBUG_LOCK_BITS
- printk(KERN_DEBUG "%s: lock status after, ret=%d\n", __FUNCTION__, ret);
+ printk(KERN_DEBUG "%s: lock status after, ret=%d\n",
+ __FUNCTION__, ret);
cfi_intelext_varsize_frob(mtd, do_printlockstatus_oneblock,
ofs, len, 0);
#endif
/* Go to known state. Chip may have been power cycled */
if (chip->state == FL_PM_SUSPENDED) {
- cfi_write(map, CMD(0xFF), 0);
+ map_write(map, CMD(0xFF), cfi->chips[i].start);
chip->state = FL_READY;
wake_up(&chip->wq);
}
struct cfi_private *cfi = map->fldrv_priv;
kfree(cfi->cmdset_priv);
kfree(cfi->cfiq);
+ kfree(cfi->chips[0].priv);
kfree(cfi);
kfree(mtd->eraseregions);
}
git://git.onelab.eu / linux-2.6.git / blobdiff