*
* Author: Jonas Holmberg <jonas.holmberg@axis.com>
*
- * $Id: amd_flash.c,v 1.26 2004/11/20 12:49:04 dwmw2 Exp $
+ * $Id: amd_flash.c,v 1.28 2005/11/07 11:14:22 gleixner Exp $
*
* Copyright (c) 2001 Axis Communications AB
*
#define AM29LV160DT 0x22C4
#define AM29LV160DB 0x2249
#define AM29BDS323D 0x22D1
-#define AM29BDS643D 0x227E
/* Atmel */
#define AT49xV16x 0x00C0
#define D6_MASK 0x40
struct amd_flash_private {
- int device_type;
- int interleave;
- int numchips;
+ int device_type;
+ int interleave;
+ int numchips;
unsigned long chipshift;
// const char *im_name;
struct flchip chips[0];
int i;
int retval = 0;
int lock_status;
-
+
map = mtd->priv;
/* Pass the whole chip through sector by sector and check for each
unlock_sector(map, eraseoffset, is_unlock);
lock_status = is_sector_locked(map, eraseoffset);
-
+
if (is_unlock && lock_status) {
printk("Cannot unlock sector at address %x length %xx\n",
eraseoffset, merip->erasesize);
/*
* Reads JEDEC manufacturer ID and device ID and returns the index of the first
* matching table entry (-1 if not found or alias for already found chip).
- */
+ */
static int probe_new_chip(struct mtd_info *mtd, __u32 base,
struct flchip *chips,
struct amd_flash_private *private,
{ .offset = 0x300000, .erasesize = 0x10000, .numblocks = 15 },
{ .offset = 0x3f0000, .erasesize = 0x02000, .numblocks = 8 },
}
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29BDS643D,
- .name = "AMD AM29BDS643D",
- .size = 0x00800000,
- .numeraseregions = 3,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 96 },
- { .offset = 0x600000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x7f0000, .erasesize = 0x02000, .numblocks = 8 },
- }
}, {
.mfr_id = MANUFACTURER_ATMEL,
.dev_id = AT49xV16x,
{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
{ .offset = 0x1F0000, .erasesize = 0x02000, .numblocks = 8 }
}
- }
+ }
};
struct mtd_info *mtd;
printk("%s: Probing for AMD compatible flash...\n", map->name);
if ((table_pos[0] = probe_new_chip(mtd, 0, NULL, &temp, table,
- sizeof(table)/sizeof(table[0])))
+ ARRAY_SIZE(table)))
== -1) {
printk(KERN_WARNING
"%s: Found no AMD compatible device at location zero\n",
base += (1 << temp.chipshift)) {
int numchips = temp.numchips;
table_pos[numchips] = probe_new_chip(mtd, base, chips,
- &temp, table, sizeof(table)/sizeof(table[0]));
+ &temp, table, ARRAY_SIZE(table));
}
mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) *
mtd->numeraseregions, GFP_KERNEL);
- if (!mtd->eraseregions) {
+ if (!mtd->eraseregions) {
printk(KERN_WARNING "%s: Failed to allocate "
"memory for MTD erase region info\n", map->name);
kfree(mtd);
mtd->type = MTD_NORFLASH;
mtd->flags = MTD_CAP_NORFLASH;
mtd->name = map->name;
- mtd->erase = amd_flash_erase;
- mtd->read = amd_flash_read;
- mtd->write = amd_flash_write;
- mtd->sync = amd_flash_sync;
- mtd->suspend = amd_flash_suspend;
- mtd->resume = amd_flash_resume;
+ mtd->erase = amd_flash_erase;
+ mtd->read = amd_flash_read;
+ mtd->write = amd_flash_write;
+ mtd->sync = amd_flash_sync;
+ mtd->suspend = amd_flash_suspend;
+ mtd->resume = amd_flash_resume;
mtd->lock = amd_flash_lock;
mtd->unlock = amd_flash_unlock;
map->name, chip->state);
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock_bh(chip->mutex);
schedule();
timeo = jiffies + HZ;
goto retry;
- }
+ }
adr += chip->start;
map->name, chip->state);
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock_bh(chip->mutex);
schedule();
timeo = jiffies + HZ;
goto retry;
- }
+ }
chip->state = FL_WRITING;
wide_write(map, datum, adr);
times_left = 500000;
- while (times_left-- && flash_is_busy(map, adr, private->interleave)) {
+ while (times_left-- && flash_is_busy(map, adr, private->interleave)) {
if (need_resched()) {
spin_unlock_bh(chip->mutex);
schedule();
if (ret) {
return ret;
}
-
+
ofs += n;
buf += n;
(*retlen) += n;
}
}
}
-
+
/* We are now aligned, write as much as possible. */
while(len >= map->buswidth) {
__u32 datum;
if (ret) {
return ret;
}
-
+
(*retlen) += n;
}
if (chip->state != FL_READY){
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock_bh(chip->mutex);
schedule();
timeo = jiffies + HZ;
goto retry;
- }
+ }
chip->state = FL_ERASING;
ENABLE_VPP(map);
send_cmd(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA);
send_cmd_to_addr(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA_2, adr);
-
+
timeo = jiffies + (HZ * 20);
spin_unlock_bh(chip->mutex);
msleep(1000);
spin_lock_bh(chip->mutex);
-
+
while (flash_is_busy(map, adr, private->interleave)) {
if (chip->state != FL_ERASING) {
/* Someone's suspended the erase. Sleep */
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
-
+
spin_unlock_bh(chip->mutex);
printk(KERN_INFO "%s: erase suspended. Sleeping\n",
map->name);
schedule();
remove_wait_queue(&chip->wq, &wait);
-
+
if (signal_pending(current)) {
return -EINTR;
}
-
+
timeo = jiffies + (HZ*2); /* FIXME */
spin_lock_bh(chip->mutex);
continue;
return -EIO;
}
-
+
/* Latency issues. Drop the lock, wait a while and retry */
spin_unlock_bh(chip->mutex);
schedule();
else
udelay(1);
-
+
spin_lock_bh(chip->mutex);
}
return -EIO;
}
}
-
+
DISABLE_VPP(map);
chip->state = FL_READY;
wake_up(&chip->wq);
* with the erase region at that address.
*/
- while ((i < mtd->numeraseregions) &&
+ while ((i < mtd->numeraseregions) &&
((instr->addr + instr->len) >= regions[i].offset)) {
i++;
}
}
}
}
-
+
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_bh(chip->mutex);
schedule();
remove_wait_queue(&chip->wq, &wait);
-
+
goto retry;
}
}
chip = &private->chips[i];
spin_lock_bh(chip->mutex);
-
+
if (chip->state == FL_SYNCING) {
chip->state = chip->oldstate;
wake_up(&chip->wq);
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