[MTD] [CHIPS] Remove MTD_OBSOLETE_CHIPS (jedec, amd_flash, sharp)

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

drivers/mtd/chips/Kconfig

@@ -1,5 +1,4 @@
 # drivers/mtd/chips/Kconfig
-# $Id: Kconfig,v 1.18 2005/11/07 11:14:22 gleixner Exp $
 
 menu "RAM/ROM/Flash chip drivers"
 	depends on MTD!=n
@@ -231,45 +230,6 @@ config MTD_ABSENT
 	  the system regardless of media presence.  Device nodes created
 	  with this driver will return -ENODEV upon access.
 
-config MTD_OBSOLETE_CHIPS
-	bool "Older (theoretically obsoleted now) drivers for non-CFI chips"
-	help
-	  This option does not enable any code directly, but will allow you to
-	  select some other chip drivers which are now considered obsolete,
-	  because the generic CONFIG_JEDECPROBE code above should now detect
-	  the chips which are supported by these drivers, and allow the generic
-	  CFI-compatible drivers to drive the chips. Say 'N' here unless you have
-	  already tried the CONFIG_JEDECPROBE method and reported its failure
-	  to the MTD mailing list at <linux-mtd@lists.infradead.org>
-
-config MTD_AMDSTD
-	tristate "AMD compatible flash chip support (non-CFI)"
-	depends on MTD_OBSOLETE_CHIPS && BROKEN
-	help
-	  This option enables support for flash chips using AMD-compatible
-	  commands, including some which are not CFI-compatible and hence
-	  cannot be used with the CONFIG_MTD_CFI_AMDSTD option.
-
-	  It also works on AMD compatible chips that do conform to CFI.
-
-config MTD_SHARP
-	tristate "pre-CFI Sharp chip support"
-	depends on MTD_OBSOLETE_CHIPS
-	help
-	  This option enables support for flash chips using Sharp-compatible
-	  commands, including some which are not CFI-compatible and hence
-	  cannot be used with the CONFIG_MTD_CFI_INTELxxx options.
-
-config MTD_JEDEC
-	tristate "JEDEC device support"
-	depends on MTD_OBSOLETE_CHIPS && BROKEN
-	help
-	  Enable older JEDEC flash interface devices for self
-	  programming flash.  It is commonly used in older AMD chips.  It is
-	  only called JEDEC because the JEDEC association
-	  <http://www.jedec.org/> distributes the identification codes for the
-	  chips.
-
 config MTD_XIP
 	bool "XIP aware MTD support"
 	depends on !SMP && (MTD_CFI_INTELEXT || MTD_CFI_AMDSTD) && EXPERIMENTAL && ARCH_MTD_XIP

drivers/mtd/chips/Makefile

@@ -1,19 +1,15 @@
 #
 # linux/drivers/chips/Makefile
 #
-# $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $
 
 obj-$(CONFIG_MTD)		+= chipreg.o
-obj-$(CONFIG_MTD_AMDSTD)	+= amd_flash.o
 obj-$(CONFIG_MTD_CFI)		+= cfi_probe.o
 obj-$(CONFIG_MTD_CFI_UTIL)	+= cfi_util.o
 obj-$(CONFIG_MTD_CFI_STAA)	+= cfi_cmdset_0020.o
 obj-$(CONFIG_MTD_CFI_AMDSTD)	+= cfi_cmdset_0002.o
 obj-$(CONFIG_MTD_CFI_INTELEXT)	+= cfi_cmdset_0001.o
 obj-$(CONFIG_MTD_GEN_PROBE)	+= gen_probe.o
-obj-$(CONFIG_MTD_JEDEC)		+= jedec.o
 obj-$(CONFIG_MTD_JEDECPROBE)	+= jedec_probe.o
 obj-$(CONFIG_MTD_RAM)		+= map_ram.o
 obj-$(CONFIG_MTD_ROM)		+= map_rom.o
-obj-$(CONFIG_MTD_SHARP)		+= sharp.o
 obj-$(CONFIG_MTD_ABSENT)	+= map_absent.o

drivers/mtd/chips/amd_flash.c

@@ -1,1396 +0,0 @@
-/*
- * MTD map driver for AMD compatible flash chips (non-CFI)
- *
- * Author: Jonas Holmberg <jonas.holmberg@axis.com>
- *
- * $Id: amd_flash.c,v 1.28 2005/11/07 11:14:22 gleixner Exp $
- *
- * Copyright (c) 2001 Axis Communications AB
- *
- * This file is under GPL.
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/flashchip.h>
-
-/* There's no limit. It exists only to avoid realloc. */
-#define MAX_AMD_CHIPS 8
-
-#define DEVICE_TYPE_X8	(8 / 8)
-#define DEVICE_TYPE_X16	(16 / 8)
-#define DEVICE_TYPE_X32	(32 / 8)
-
-/* Addresses */
-#define ADDR_MANUFACTURER		0x0000
-#define ADDR_DEVICE_ID			0x0001
-#define ADDR_SECTOR_LOCK		0x0002
-#define ADDR_HANDSHAKE			0x0003
-#define ADDR_UNLOCK_1			0x0555
-#define ADDR_UNLOCK_2			0x02AA
-
-/* Commands */
-#define CMD_UNLOCK_DATA_1		0x00AA
-#define CMD_UNLOCK_DATA_2		0x0055
-#define CMD_MANUFACTURER_UNLOCK_DATA	0x0090
-#define CMD_UNLOCK_BYPASS_MODE		0x0020
-#define CMD_PROGRAM_UNLOCK_DATA		0x00A0
-#define CMD_RESET_DATA			0x00F0
-#define CMD_SECTOR_ERASE_UNLOCK_DATA	0x0080
-#define CMD_SECTOR_ERASE_UNLOCK_DATA_2	0x0030
-
-#define CMD_UNLOCK_SECTOR		0x0060
-
-/* Manufacturers */
-#define MANUFACTURER_AMD	0x0001
-#define MANUFACTURER_ATMEL	0x001F
-#define MANUFACTURER_FUJITSU	0x0004
-#define MANUFACTURER_ST		0x0020
-#define MANUFACTURER_SST	0x00BF
-#define MANUFACTURER_TOSHIBA	0x0098
-
-/* AMD */
-#define AM29F800BB	0x2258
-#define AM29F800BT	0x22D6
-#define AM29LV800BB	0x225B
-#define AM29LV800BT	0x22DA
-#define AM29LV160DT	0x22C4
-#define AM29LV160DB	0x2249
-#define AM29BDS323D     0x22D1
-
-/* Atmel */
-#define AT49xV16x	0x00C0
-#define AT49xV16xT	0x00C2
-
-/* Fujitsu */
-#define MBM29LV160TE	0x22C4
-#define MBM29LV160BE	0x2249
-#define MBM29LV800BB	0x225B
-
-/* ST - www.st.com */
-#define M29W800T	0x00D7
-#define M29W160DT	0x22C4
-#define M29W160DB	0x2249
-
-/* SST */
-#define SST39LF800	0x2781
-#define SST39LF160	0x2782
-
-/* Toshiba */
-#define TC58FVT160	0x00C2
-#define TC58FVB160	0x0043
-
-#define D6_MASK	0x40
-
-struct amd_flash_private {
-	int device_type;
-	int interleave;
-	int numchips;
-	unsigned long chipshift;
-	struct flchip chips[0];
-};
-
-struct amd_flash_info {
-	const __u16 mfr_id;
-	const __u16 dev_id;
-	const char *name;
-	const u_long size;
-	const int numeraseregions;
-	const struct mtd_erase_region_info regions[4];
-};
-
-
-
-static int amd_flash_read(struct mtd_info *, loff_t, size_t, size_t *,
-			  u_char *);
-static int amd_flash_write(struct mtd_info *, loff_t, size_t, size_t *,
-			   const u_char *);
-static int amd_flash_erase(struct mtd_info *, struct erase_info *);
-static void amd_flash_sync(struct mtd_info *);
-static int amd_flash_suspend(struct mtd_info *);
-static void amd_flash_resume(struct mtd_info *);
-static void amd_flash_destroy(struct mtd_info *);
-static struct mtd_info *amd_flash_probe(struct map_info *map);
-
-
-static struct mtd_chip_driver amd_flash_chipdrv = {
-	.probe = amd_flash_probe,
-	.destroy = amd_flash_destroy,
-	.name = "amd_flash",
-	.module = THIS_MODULE
-};
-
-static inline __u32 wide_read(struct map_info *map, __u32 addr)
-{
-	if (map->buswidth == 1) {
-		return map_read8(map, addr);
-	} else if (map->buswidth == 2) {
-		return map_read16(map, addr);
-	} else if (map->buswidth == 4) {
-		return map_read32(map, addr);
-        }
-
-	return 0;
-}
-
-static inline void wide_write(struct map_info *map, __u32 val, __u32 addr)
-{
-	if (map->buswidth == 1) {
-		map_write8(map, val, addr);
-	} else if (map->buswidth == 2) {
-		map_write16(map, val, addr);
-	} else if (map->buswidth == 4) {
-		map_write32(map, val, addr);
-	}
-}
-
-static inline __u32 make_cmd(struct map_info *map, __u32 cmd)
-{
-	const struct amd_flash_private *private = map->fldrv_priv;
-	if ((private->interleave == 2) &&
-	    (private->device_type == DEVICE_TYPE_X16)) {
-		cmd |= (cmd << 16);
-	}
-
-	return cmd;
-}
-
-static inline void send_unlock(struct map_info *map, unsigned long base)
-{
-	wide_write(map, (CMD_UNLOCK_DATA_1 << 16) | CMD_UNLOCK_DATA_1,
-		   base + (map->buswidth * ADDR_UNLOCK_1));
-	wide_write(map, (CMD_UNLOCK_DATA_2 << 16) | CMD_UNLOCK_DATA_2,
-		   base + (map->buswidth * ADDR_UNLOCK_2));
-}
-
-static inline void send_cmd(struct map_info *map, unsigned long base, __u32 cmd)
-{
-	send_unlock(map, base);
-	wide_write(map, make_cmd(map, cmd),
-		   base + (map->buswidth * ADDR_UNLOCK_1));
-}
-
-static inline void send_cmd_to_addr(struct map_info *map, unsigned long base,
-				    __u32 cmd, unsigned long addr)
-{
-	send_unlock(map, base);
-	wide_write(map, make_cmd(map, cmd), addr);
-}
-
-static inline int flash_is_busy(struct map_info *map, unsigned long addr,
-				int interleave)
-{
-
-	if ((interleave == 2) && (map->buswidth == 4)) {
-		__u32 read1, read2;
-
-		read1 = wide_read(map, addr);
-		read2 = wide_read(map, addr);
-
-		return (((read1 >> 16) & D6_MASK) !=
-			((read2 >> 16) & D6_MASK)) ||
-		       (((read1 & 0xffff) & D6_MASK) !=
-			((read2 & 0xffff) & D6_MASK));
-	}
-
-	return ((wide_read(map, addr) & D6_MASK) !=
-		(wide_read(map, addr) & D6_MASK));
-}
-
-static inline void unlock_sector(struct map_info *map, unsigned long sect_addr,
-				 int unlock)
-{
-	/* Sector lock address. A6 = 1 for unlock, A6 = 0 for lock */
-	int SLA = unlock ?
-		(sect_addr |  (0x40 * map->buswidth)) :
-		(sect_addr & ~(0x40 * map->buswidth)) ;
-
-	__u32 cmd = make_cmd(map, CMD_UNLOCK_SECTOR);
-
-	wide_write(map, make_cmd(map, CMD_RESET_DATA), 0);
-	wide_write(map, cmd, SLA); /* 1st cycle: write cmd to any address */
-	wide_write(map, cmd, SLA); /* 2nd cycle: write cmd to any address */
-	wide_write(map, cmd, SLA); /* 3rd cycle: write cmd to SLA */
-}
-
-static inline int is_sector_locked(struct map_info *map,
-				   unsigned long sect_addr)
-{
-	int status;
-
-	wide_write(map, CMD_RESET_DATA, 0);
-	send_cmd(map, sect_addr, CMD_MANUFACTURER_UNLOCK_DATA);
-
-	/* status is 0x0000 for unlocked and 0x0001 for locked */
-	status = wide_read(map, sect_addr + (map->buswidth * ADDR_SECTOR_LOCK));
-	wide_write(map, CMD_RESET_DATA, 0);
-	return status;
-}
-
-static int amd_flash_do_unlock(struct mtd_info *mtd, loff_t ofs, size_t len,
-			       int is_unlock)
-{
-	struct map_info *map;
-	struct mtd_erase_region_info *merip;
-	int eraseoffset, erasesize, eraseblocks;
-	int i;
-	int retval = 0;
-	int lock_status;
-
-	map = mtd->priv;
-
-	/* Pass the whole chip through sector by sector and check for each
-	   sector if the sector and the given interval overlap */
-	for(i = 0; i < mtd->numeraseregions; i++) {
-		merip = &mtd->eraseregions[i];
-
-		eraseoffset = merip->offset;
-		erasesize = merip->erasesize;
-		eraseblocks = merip->numblocks;
-
-		if (ofs > eraseoffset + erasesize)
-			continue;
-
-		while (eraseblocks > 0) {
-			if (ofs < eraseoffset + erasesize && ofs + len > eraseoffset) {
-				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);
-					retval = -1;
-				} else if (!is_unlock && !lock_status) {
-					printk("Cannot lock sector at address %x length %x\n",
-					       eraseoffset, merip->erasesize);
-					retval = -1;
-				}
-			}
-			eraseoffset += erasesize;
-			eraseblocks --;
-		}
-	}
-	return retval;
-}
-
-static int amd_flash_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
-{
-	return amd_flash_do_unlock(mtd, ofs, len, 1);
-}
-
-static int amd_flash_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
-{
-	return amd_flash_do_unlock(mtd, ofs, len, 0);
-}
-
-
-/*
- * 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,
-			  const struct amd_flash_info *table, int table_size)
-{
-	__u32 mfr_id;
-	__u32 dev_id;
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private temp;
-	int i;
-
-	temp.device_type = DEVICE_TYPE_X16;	// Assume X16 (FIXME)
-	temp.interleave = 2;
-	map->fldrv_priv = &temp;
-
-	/* Enter autoselect mode. */
-	send_cmd(map, base, CMD_RESET_DATA);
-	send_cmd(map, base, CMD_MANUFACTURER_UNLOCK_DATA);
-
-	mfr_id = wide_read(map, base + (map->buswidth * ADDR_MANUFACTURER));
-	dev_id = wide_read(map, base + (map->buswidth * ADDR_DEVICE_ID));
-
-	if ((map->buswidth == 4) && ((mfr_id >> 16) == (mfr_id & 0xffff)) &&
-	    ((dev_id >> 16) == (dev_id & 0xffff))) {
-		mfr_id &= 0xffff;
-		dev_id &= 0xffff;
-	} else {
-		temp.interleave = 1;
-	}
-
-	for (i = 0; i < table_size; i++) {
-		if ((mfr_id == table[i].mfr_id) &&
-		    (dev_id == table[i].dev_id)) {
-			if (chips) {
-				int j;
-
-				/* Is this an alias for an already found chip?
-				 * In that case that chip should be in
-				 * autoselect mode now.
-				 */
-				for (j = 0; j < private->numchips; j++) {
-					__u32 mfr_id_other;
-					__u32 dev_id_other;
-
-					mfr_id_other =
-						wide_read(map, chips[j].start +
-							       (map->buswidth *
-								ADDR_MANUFACTURER
-							       ));
-					dev_id_other =
-						wide_read(map, chips[j].start +
-					    		       (map->buswidth *
-							        ADDR_DEVICE_ID));
-					if (temp.interleave == 2) {
-						mfr_id_other &= 0xffff;
-						dev_id_other &= 0xffff;
-					}
-					if ((mfr_id_other == mfr_id) &&
-					    (dev_id_other == dev_id)) {
-
-						/* Exit autoselect mode. */
-						send_cmd(map, base,
-							 CMD_RESET_DATA);
-
-						return -1;
-					}
-				}
-
-				if (private->numchips == MAX_AMD_CHIPS) {
-					printk(KERN_WARNING
-					       "%s: Too many flash chips "
-					       "detected. Increase "
-					       "MAX_AMD_CHIPS from %d.\n",
-					       map->name, MAX_AMD_CHIPS);
-
-					return -1;
-				}
-
-				chips[private->numchips].start = base;
-				chips[private->numchips].state = FL_READY;
-				chips[private->numchips].mutex =
-					&chips[private->numchips]._spinlock;
-				private->numchips++;
-			}
-
-			printk("%s: Found %d x %ldMiB %s at 0x%x\n", map->name,
-			       temp.interleave, (table[i].size)/(1024*1024),
-			       table[i].name, base);
-
-			mtd->size += table[i].size * temp.interleave;
-			mtd->numeraseregions += table[i].numeraseregions;
-
-			break;
-		}
-	}
-
-	/* Exit autoselect mode. */
-	send_cmd(map, base, CMD_RESET_DATA);
-
-	if (i == table_size) {
-		printk(KERN_DEBUG "%s: unknown flash device at 0x%x, "
-		       "mfr id 0x%x, dev id 0x%x\n", map->name,
-		       base, mfr_id, dev_id);
-		map->fldrv_priv = NULL;
-
-		return -1;
-	}
-
-	private->device_type = temp.device_type;
-	private->interleave = temp.interleave;
-
-	return i;
-}
-
-
-
-static struct mtd_info *amd_flash_probe(struct map_info *map)
-{
-	static const struct amd_flash_info table[] = {
-	{
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29LV160DT,
-		.name = "AMD AM29LV160DT",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
-			{ .offset = 0x1F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x1F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x1FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29LV160DB,
-		.name = "AMD AM29LV160DB",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_TOSHIBA,
-		.dev_id = TC58FVT160,
-		.name = "Toshiba TC58FVT160",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
-			{ .offset = 0x1F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x1F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x1FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_FUJITSU,
-		.dev_id = MBM29LV160TE,
-		.name = "Fujitsu MBM29LV160TE",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
-			{ .offset = 0x1F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x1F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x1FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_TOSHIBA,
-		.dev_id = TC58FVB160,
-		.name = "Toshiba TC58FVB160",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_FUJITSU,
-		.dev_id = MBM29LV160BE,
-		.name = "Fujitsu MBM29LV160BE",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29LV800BB,
-		.name = "AMD AM29LV800BB",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29F800BB,
-		.name = "AMD AM29F800BB",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29LV800BT,
-		.name = "AMD AM29LV800BT",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
-			{ .offset = 0x0F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x0F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x0FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29F800BT,
-		.name = "AMD AM29F800BT",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
-			{ .offset = 0x0F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x0F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x0FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29LV800BB,
-		.name = "AMD AM29LV800BB",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
-			{ .offset = 0x0F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x0F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x0FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_FUJITSU,
-		.dev_id = MBM29LV800BB,
-		.name = "Fujitsu MBM29LV800BB",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_ST,
-		.dev_id = M29W800T,
-		.name = "ST M29W800T",
-		.size = 0x00100000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
-			{ .offset = 0x0F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x0F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x0FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_ST,
-		.dev_id = M29W160DT,
-		.name = "ST M29W160DT",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
-			{ .offset = 0x1F0000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x1F8000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x1FC000, .erasesize = 0x04000, .numblocks =  1 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_ST,
-		.dev_id = M29W160DB,
-		.name = "ST M29W160DB",
-		.size = 0x00200000,
-		.numeraseregions = 4,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x04000, .numblocks =  1 },
-			{ .offset = 0x004000, .erasesize = 0x02000, .numblocks =  2 },
-			{ .offset = 0x008000, .erasesize = 0x08000, .numblocks =  1 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_AMD,
-		.dev_id = AM29BDS323D,
-		.name = "AMD AM29BDS323D",
-		.size = 0x00400000,
-		.numeraseregions = 3,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 48 },
-			{ .offset = 0x300000, .erasesize = 0x10000, .numblocks = 15 },
-			{ .offset = 0x3f0000, .erasesize = 0x02000, .numblocks =  8 },
-		}
-	}, {
-		.mfr_id = MANUFACTURER_ATMEL,
-		.dev_id = AT49xV16x,
-		.name = "Atmel AT49xV16x",
-		.size = 0x00200000,
-		.numeraseregions = 2,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x02000, .numblocks =  8 },
-			{ .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
-		}
-	}, {
-		.mfr_id = MANUFACTURER_ATMEL,
-		.dev_id = AT49xV16xT,
-		.name = "Atmel AT49xV16xT",
-		.size = 0x00200000,
-		.numeraseregions = 2,
-		.regions = {
-			{ .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
-			{ .offset = 0x1F0000, .erasesize = 0x02000, .numblocks =  8 }
-		}
-	}
-	};
-
-	struct mtd_info *mtd;
-	struct flchip chips[MAX_AMD_CHIPS];
-	int table_pos[MAX_AMD_CHIPS];
-	struct amd_flash_private temp;
-	struct amd_flash_private *private;
-	u_long size;
-	unsigned long base;
-	int i;
-	int reg_idx;
-	int offset;
-
-	mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
-	if (!mtd) {
-		printk(KERN_WARNING
-		       "%s: kmalloc failed for info structure\n", map->name);
-		return NULL;
-	}
-	mtd->priv = map;
-
-	memset(&temp, 0, sizeof(temp));
-
-	printk("%s: Probing for AMD compatible flash...\n", map->name);
-
-	if ((table_pos[0] = probe_new_chip(mtd, 0, NULL, &temp, table,
-					   ARRAY_SIZE(table)))
-	    == -1) {
-		printk(KERN_WARNING
-		       "%s: Found no AMD compatible device at location zero\n",
-		       map->name);
-		kfree(mtd);
-
-		return NULL;
-	}
-
-	chips[0].start = 0;
-	chips[0].state = FL_READY;
-	chips[0].mutex = &chips[0]._spinlock;
-	temp.numchips = 1;
-	for (size = mtd->size; size > 1; size >>= 1) {
-		temp.chipshift++;
-	}
-	switch (temp.interleave) {
-		case 2:
-			temp.chipshift += 1;
-			break;
-		case 4:
-			temp.chipshift += 2;
-			break;
-	}
-
-	/* Find out if there are any more chips in the map. */
-	for (base = (1 << temp.chipshift);
-	     base < map->size;
-	     base += (1 << temp.chipshift)) {
-	     	int numchips = temp.numchips;
-		table_pos[numchips] = probe_new_chip(mtd, base, chips,
-			&temp, table, ARRAY_SIZE(table));
-	}
-
-	mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) *
-				    mtd->numeraseregions, GFP_KERNEL);
-	if (!mtd->eraseregions) {
-		printk(KERN_WARNING "%s: Failed to allocate "
-		       "memory for MTD erase region info\n", map->name);
-		kfree(mtd);
-		map->fldrv_priv = NULL;
-		return NULL;
-	}
-
-	reg_idx = 0;
-	offset = 0;
-	for (i = 0; i < temp.numchips; i++) {
-		int dev_size;
-		int j;
-
-		dev_size = 0;
-		for (j = 0; j < table[table_pos[i]].numeraseregions; j++) {
-			mtd->eraseregions[reg_idx].offset = offset +
-				(table[table_pos[i]].regions[j].offset *
-				 temp.interleave);
-			mtd->eraseregions[reg_idx].erasesize =
-				table[table_pos[i]].regions[j].erasesize *
-				temp.interleave;
-			mtd->eraseregions[reg_idx].numblocks =
-				table[table_pos[i]].regions[j].numblocks;
-			if (mtd->erasesize <
-			    mtd->eraseregions[reg_idx].erasesize) {
-				mtd->erasesize =
-					mtd->eraseregions[reg_idx].erasesize;
-			}
-			dev_size += mtd->eraseregions[reg_idx].erasesize *
-				    mtd->eraseregions[reg_idx].numblocks;
-			reg_idx++;
-		}
-		offset += dev_size;
-	}
-	mtd->type = MTD_NORFLASH;
-	mtd->writesize = 1;
-	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->lock = amd_flash_lock;
-	mtd->unlock = amd_flash_unlock;
-
-	private = kmalloc(sizeof(*private) + (sizeof(struct flchip) *
-					      temp.numchips), GFP_KERNEL);
-	if (!private) {
-		printk(KERN_WARNING
-		       "%s: kmalloc failed for private structure\n", map->name);
-		kfree(mtd);
-		map->fldrv_priv = NULL;
-		return NULL;
-	}
-	memcpy(private, &temp, sizeof(temp));
-	memcpy(private->chips, chips,
-	       sizeof(struct flchip) * private->numchips);
-	for (i = 0; i < private->numchips; i++) {
-		init_waitqueue_head(&private->chips[i].wq);
-		spin_lock_init(&private->chips[i]._spinlock);
-	}
-
-	map->fldrv_priv = private;
-
-	map->fldrv = &amd_flash_chipdrv;
-
-	__module_get(THIS_MODULE);
-	return mtd;
-}
-
-
-
-static inline int read_one_chip(struct map_info *map, struct flchip *chip,
-			       loff_t adr, size_t len, u_char *buf)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	unsigned long timeo = jiffies + HZ;
-
-retry:
-	spin_lock_bh(chip->mutex);
-
-	if (chip->state != FL_READY){
-		printk(KERN_INFO "%s: waiting for chip to read, state = %d\n",
-		       map->name, chip->state);
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		spin_unlock_bh(chip->mutex);
-
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		if(signal_pending(current)) {
-			return -EINTR;
-		}
-
-		timeo = jiffies + HZ;
-
-		goto retry;
-	}
-
-	adr += chip->start;
-
-	chip->state = FL_READY;
-
-	map_copy_from(map, buf, adr, len);
-
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-
-	return 0;
-}
-
-
-
-static int amd_flash_read(struct mtd_info *mtd, loff_t from, size_t len,
-			  size_t *retlen, u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private *private = map->fldrv_priv;
-	unsigned long ofs;
-	int chipnum;
-	int ret = 0;
-
-	if ((from + len) > mtd->size) {
-		printk(KERN_WARNING "%s: read request past end of device "
-		       "(0x%lx)\n", map->name, (unsigned long)from + len);
-
-		return -EINVAL;
-	}
-
-	/* Offset within the first chip that the first read should start. */
-	chipnum = (from >> private->chipshift);
-	ofs = from - (chipnum <<  private->chipshift);
-
-	*retlen = 0;
-
-	while (len) {
-		unsigned long this_len;
-
-		if (chipnum >= private->numchips) {
-			break;
-		}
-
-		if ((len + ofs - 1) >> private->chipshift) {
-			this_len = (1 << private->chipshift) - ofs;
-		} else {
-			this_len = len;
-		}
-
-		ret = read_one_chip(map, &private->chips[chipnum], ofs,
-				    this_len, buf);
-		if (ret) {
-			break;
-		}
-
-		*retlen += this_len;
-		len -= this_len;
-		buf += this_len;
-
-		ofs = 0;
-		chipnum++;
-	}
-
-	return ret;
-}
-
-
-
-static int write_one_word(struct map_info *map, struct flchip *chip,
-			  unsigned long adr, __u32 datum)
-{
-	unsigned long timeo = jiffies + HZ;
-	struct amd_flash_private *private = map->fldrv_priv;
-	DECLARE_WAITQUEUE(wait, current);
-	int ret = 0;
-	int times_left;
-
-retry:
-	spin_lock_bh(chip->mutex);
-
-	if (chip->state != FL_READY){
-		printk("%s: waiting for chip to write, state = %d\n",
-		       map->name, chip->state);
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		spin_unlock_bh(chip->mutex);
-
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-		printk(KERN_INFO "%s: woke up to write\n", map->name);
-		if(signal_pending(current))
-			return -EINTR;
-
-		timeo = jiffies + HZ;
-
-		goto retry;
-	}
-
-	chip->state = FL_WRITING;
-
-	adr += chip->start;
-	ENABLE_VPP(map);
-	send_cmd(map, chip->start, CMD_PROGRAM_UNLOCK_DATA);
-	wide_write(map, datum, adr);
-
-	times_left = 500000;
-	while (times_left-- && flash_is_busy(map, adr, private->interleave)) {
-		if (need_resched()) {
-			spin_unlock_bh(chip->mutex);
-			schedule();
-			spin_lock_bh(chip->mutex);
-		}
-	}
-
-	if (!times_left) {
-		printk(KERN_WARNING "%s: write to 0x%lx timed out!\n",
-		       map->name, adr);
-		ret = -EIO;
-	} else {
-		__u32 verify;
-		if ((verify = wide_read(map, adr)) != datum) {
-			printk(KERN_WARNING "%s: write to 0x%lx failed. "
-			       "datum = %x, verify = %x\n",
-			       map->name, adr, datum, verify);
-			ret = -EIO;
-		}
-	}
-
-	DISABLE_VPP(map);
-	chip->state = FL_READY;
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-
-	return ret;
-}
-
-
-
-static int amd_flash_write(struct mtd_info *mtd, loff_t to , size_t len,
-			   size_t *retlen, const u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private *private = map->fldrv_priv;
-	int ret = 0;
-	int chipnum;
-	unsigned long ofs;
-	unsigned long chipstart;
-
-	*retlen = 0;
-	if (!len) {
-		return 0;
-	}
-
-	chipnum = to >> private->chipshift;
-	ofs = to  - (chipnum << private->chipshift);
-	chipstart = private->chips[chipnum].start;
-
-	/* If it's not bus-aligned, do the first byte write. */
-	if (ofs & (map->buswidth - 1)) {
-		unsigned long bus_ofs = ofs & ~(map->buswidth - 1);
-		int i = ofs - bus_ofs;
-		int n = 0;
-		u_char tmp_buf[4];
-		__u32 datum;
-
-		map_copy_from(map, tmp_buf,
-			       bus_ofs + private->chips[chipnum].start,
-			       map->buswidth);
-		while (len && i < map->buswidth)
-			tmp_buf[i++] = buf[n++], len--;
-
-		if (map->buswidth == 2) {
-			datum = *(__u16*)tmp_buf;
-		} else if (map->buswidth == 4) {
-			datum = *(__u32*)tmp_buf;
-		} else {
-			return -EINVAL;  /* should never happen, but be safe */
-		}
-
-		ret = write_one_word(map, &private->chips[chipnum], bus_ofs,
-				     datum);
-		if (ret) {
-			return ret;
-		}
-
-		ofs += n;
-		buf += n;
-		(*retlen) += n;
-
-		if (ofs >> private->chipshift) {
-			chipnum++;
-			ofs = 0;
-			if (chipnum == private->numchips) {
-				return 0;
-			}
-		}
-	}
-
-	/* We are now aligned, write as much as possible. */
-	while(len >= map->buswidth) {
-		__u32 datum;
-
-		if (map->buswidth == 1) {
-			datum = *(__u8*)buf;
-		} else if (map->buswidth == 2) {
-			datum = *(__u16*)buf;
-		} else if (map->buswidth == 4) {
-			datum = *(__u32*)buf;
-		} else {
-			return -EINVAL;
-		}
-
-		ret = write_one_word(map, &private->chips[chipnum], ofs, datum);
-
-		if (ret) {
-			return ret;
-		}
-
-		ofs += map->buswidth;
-		buf += map->buswidth;
-		(*retlen) += map->buswidth;
-		len -= map->buswidth;
-
-		if (ofs >> private->chipshift) {
-			chipnum++;
-			ofs = 0;
-			if (chipnum == private->numchips) {
-				return 0;
-			}
-			chipstart = private->chips[chipnum].start;
-		}
-	}
-
-	if (len & (map->buswidth - 1)) {
-		int i = 0, n = 0;
-		u_char tmp_buf[2];
-		__u32 datum;
-
-		map_copy_from(map, tmp_buf,
-			       ofs + private->chips[chipnum].start,
-			       map->buswidth);
-		while (len--) {
-			tmp_buf[i++] = buf[n++];
-		}
-
-		if (map->buswidth == 2) {
-			datum = *(__u16*)tmp_buf;
-		} else if (map->buswidth == 4) {
-			datum = *(__u32*)tmp_buf;
-		} else {
-			return -EINVAL;  /* should never happen, but be safe */
-		}
-
-		ret = write_one_word(map, &private->chips[chipnum], ofs, datum);
-
-		if (ret) {
-			return ret;
-		}
-
-		(*retlen) += n;
-	}
-
-	return 0;
-}
-
-
-
-static inline int erase_one_block(struct map_info *map, struct flchip *chip,
-				  unsigned long adr, u_long size)
-{
-	unsigned long timeo = jiffies + HZ;
-	struct amd_flash_private *private = map->fldrv_priv;
-	DECLARE_WAITQUEUE(wait, current);
-
-retry:
-	spin_lock_bh(chip->mutex);
-
-	if (chip->state != FL_READY){
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		spin_unlock_bh(chip->mutex);
-
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		if (signal_pending(current)) {
-			return -EINTR;
-		}
-
-		timeo = jiffies + HZ;
-
-		goto retry;
-	}
-
-	chip->state = FL_ERASING;
-
-	adr += chip->start;
-	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;
-		}
-
-		/* OK Still waiting */
-		if (time_after(jiffies, timeo)) {
-			chip->state = FL_READY;
-			spin_unlock_bh(chip->mutex);
-			printk(KERN_WARNING "%s: waiting for erase to complete "
-			       "timed out.\n", map->name);
-			DISABLE_VPP(map);
-
-			return -EIO;
-		}
-
-		/* Latency issues. Drop the lock, wait a while and retry */
-		spin_unlock_bh(chip->mutex);
-
-		if (need_resched())
-			schedule();
-		else
-			udelay(1);
-
-		spin_lock_bh(chip->mutex);
-	}
-
-	/* Verify every single word */
-	{
-		int address;
-		int error = 0;
-		__u8 verify;
-
-		for (address = adr; address < (adr + size); address++) {
-			if ((verify = map_read8(map, address)) != 0xFF) {
-				error = 1;
-				break;
-			}
-		}
-		if (error) {
-			chip->state = FL_READY;
-			spin_unlock_bh(chip->mutex);
-			printk(KERN_WARNING
-			       "%s: verify error at 0x%x, size %ld.\n",
-			       map->name, address, size);
-			DISABLE_VPP(map);
-
-			return -EIO;
-		}
-	}
-
-	DISABLE_VPP(map);
-	chip->state = FL_READY;
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-
-	return 0;
-}
-
-
-
-static int amd_flash_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private *private = map->fldrv_priv;
-	unsigned long adr, len;
-	int chipnum;
-	int ret = 0;
-	int i;
-	int first;
-	struct mtd_erase_region_info *regions = mtd->eraseregions;
-
-	if (instr->addr > mtd->size) {
-		return -EINVAL;
-	}
-
-	if ((instr->len + instr->addr) > mtd->size) {
-		return -EINVAL;
-	}
-
-	/* Check that both start and end of the requested erase are
-	 * aligned with the erasesize at the appropriate addresses.
-	 */
-
-	i = 0;
-
-        /* Skip all erase regions which are ended before the start of
-           the requested erase. Actually, to save on the calculations,
-           we skip to the first erase region which starts after the
-           start of the requested erase, and then go back one.
-        */
-
-        while ((i < mtd->numeraseregions) &&
-	       (instr->addr >= regions[i].offset)) {
-               i++;
-	}
-        i--;
-
-	/* OK, now i is pointing at the erase region in which this
-	 * erase request starts. Check the start of the requested
-	 * erase range is aligned with the erase size which is in
-	 * effect here.
-	 */
-
-	if (instr->addr & (regions[i].erasesize-1)) {
-		return -EINVAL;
-	}
-
-	/* Remember the erase region we start on. */
-
-	first = i;
-
-	/* Next, check that the end of the requested erase is aligned
-	 * with the erase region at that address.
-	 */
-
-	while ((i < mtd->numeraseregions) &&
-	       ((instr->addr + instr->len) >= regions[i].offset)) {
-                i++;
-	}
-
-	/* As before, drop back one to point at the region in which
-	 * the address actually falls.
-	 */
-
-	i--;
-
-	if ((instr->addr + instr->len) & (regions[i].erasesize-1)) {
-                return -EINVAL;
-	}
-
-	chipnum = instr->addr >> private->chipshift;
-	adr = instr->addr - (chipnum << private->chipshift);
-	len = instr->len;
-
-	i = first;
-
-	while (len) {
-		ret = erase_one_block(map, &private->chips[chipnum], adr,
-				      regions[i].erasesize);
-
-		if (ret) {
-			return ret;
-		}
-
-		adr += regions[i].erasesize;
-		len -= regions[i].erasesize;
-
-		if ((adr % (1 << private->chipshift)) ==
-		    ((regions[i].offset + (regions[i].erasesize *
-		    			   regions[i].numblocks))
-		     % (1 << private->chipshift))) {
-			i++;
-		}
-
-		if (adr >> private->chipshift) {
-			adr = 0;
-			chipnum++;
-			if (chipnum >= private->numchips) {
-				break;
-			}
-		}
-	}
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
-}
-
-
-
-static void amd_flash_sync(struct mtd_info *mtd)
-{
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private *private = map->fldrv_priv;
-	int i;
-	struct flchip *chip;
-	int ret = 0;
-	DECLARE_WAITQUEUE(wait, current);
-
-	for (i = 0; !ret && (i < private->numchips); i++) {
-		chip = &private->chips[i];
-
-	retry:
-		spin_lock_bh(chip->mutex);
-
-		switch(chip->state) {
-		case FL_READY:
-		case FL_STATUS:
-		case FL_CFI_QUERY:
-		case FL_JEDEC_QUERY:
-			chip->oldstate = chip->state;
-			chip->state = FL_SYNCING;
-			/* No need to wake_up() on this state change -
-			 * as the whole point is that nobody can do anything
-			 * with the chip now anyway.
-			 */
-		case FL_SYNCING:
-			spin_unlock_bh(chip->mutex);
-			break;
-
-		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;
-		}
-	}
-
-	/* Unlock the chips again */
-	for (i--; i >= 0; i--) {
-		chip = &private->chips[i];
-
-		spin_lock_bh(chip->mutex);
-
-		if (chip->state == FL_SYNCING) {
-			chip->state = chip->oldstate;
-			wake_up(&chip->wq);
-		}
-		spin_unlock_bh(chip->mutex);
-	}
-}
-
-
-
-static int amd_flash_suspend(struct mtd_info *mtd)
-{
-printk("amd_flash_suspend(): not implemented!\n");
-	return -EINVAL;
-}
-
-
-
-static void amd_flash_resume(struct mtd_info *mtd)
-{
-printk("amd_flash_resume(): not implemented!\n");
-}
-
-
-
-static void amd_flash_destroy(struct mtd_info *mtd)
-{
-	struct map_info *map = mtd->priv;
-	struct amd_flash_private *private = map->fldrv_priv;
-	kfree(private);
-}
-
-int __init amd_flash_init(void)
-{
-	register_mtd_chip_driver(&amd_flash_chipdrv);
-	return 0;
-}
-
-void __exit amd_flash_exit(void)
-{
-	unregister_mtd_chip_driver(&amd_flash_chipdrv);
-}
-
-module_init(amd_flash_init);
-module_exit(amd_flash_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jonas Holmberg <jonas.holmberg@axis.com>");
-MODULE_DESCRIPTION("Old MTD chip driver for AMD flash chips");

drivers/mtd/chips/jedec.c

@@ -1,935 +0,0 @@
-
-/* JEDEC Flash Interface.
- * This is an older type of interface for self programming flash. It is
- * commonly use in older AMD chips and is obsolete compared with CFI.
- * It is called JEDEC because the JEDEC association distributes the ID codes
- * for the chips.
- *
- * See the AMD flash databook for information on how to operate the interface.
- *
- * This code does not support anything wider than 8 bit flash chips, I am
- * not going to guess how to send commands to them, plus I expect they will
- * all speak CFI..
- *
- * $Id: jedec.c,v 1.22 2005/01/05 18:05:11 dwmw2 Exp $
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/mtd/jedec.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/compatmac.h>
-
-static struct mtd_info *jedec_probe(struct map_info *);
-static int jedec_probe8(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv);
-static int jedec_probe16(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv);
-static int jedec_probe32(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv);
-static void jedec_flash_chip_scan(struct jedec_private *priv,unsigned long start,
-			    unsigned long len);
-static int flash_erase(struct mtd_info *mtd, struct erase_info *instr);
-static int flash_write(struct mtd_info *mtd, loff_t start, size_t len,
-		       size_t *retlen, const u_char *buf);
-
-static unsigned long my_bank_size;
-
-/* Listing of parts and sizes. We need this table to learn the sector
-   size of the chip and the total length */
-static const struct JEDECTable JEDEC_table[] = {
-	{
-		.jedec		= 0x013D,
-		.name		= "AMD Am29F017D",
-		.size		= 2*1024*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{
-		.jedec		= 0x01AD,
-		.name		= "AMD Am29F016",
-		.size		= 2*1024*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{
-		.jedec		= 0x01D5,
-		.name		= "AMD Am29F080",
-		.size		= 1*1024*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{
-		.jedec		= 0x01A4,
-		.name		= "AMD Am29F040",
-		.size		= 512*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{
-		.jedec		= 0x20E3,
-		.name		= "AMD Am29W040B",
-		.size		= 512*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{
-		.jedec		= 0xC2AD,
-		.name		= "Macronix MX29F016",
-		.size		= 2*1024*1024,
-		.sectorsize	= 64*1024,
-		.capabilities	= MTD_CAP_NORFLASH
-	},
-	{ .jedec = 0x0 }
-};
-
-static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id);
-static void jedec_sync(struct mtd_info *mtd) {};
-static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len,
-		      size_t *retlen, u_char *buf);
-static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len,
-			     size_t *retlen, u_char *buf);
-
-static struct mtd_info *jedec_probe(struct map_info *map);
-
-
-
-static struct mtd_chip_driver jedec_chipdrv = {
-	.probe	= jedec_probe,
-	.name	= "jedec",
-	.module	= THIS_MODULE
-};
-
-/* Probe entry point */
-
-static struct mtd_info *jedec_probe(struct map_info *map)
-{
-   struct mtd_info *MTD;
-   struct jedec_private *priv;
-   unsigned long Base;
-   unsigned long SectorSize;
-   unsigned count;
-   unsigned I,Uniq;
-   char Part[200];
-   memset(&priv,0,sizeof(priv));
-
-   MTD = kzalloc(sizeof(struct mtd_info) + sizeof(struct jedec_private), GFP_KERNEL);
-   if (!MTD)
-	   return NULL;
-
-   priv = (struct jedec_private *)&MTD[1];
-
-   my_bank_size = map->size;
-
-   if (map->size/my_bank_size > MAX_JEDEC_CHIPS)
-   {
-      printk("mtd: Increase MAX_JEDEC_CHIPS, too many banks.\n");
-      kfree(MTD);
-      return NULL;
-   }
-
-   for (Base = 0; Base < map->size; Base += my_bank_size)
-   {
-      // Perhaps zero could designate all tests?
-      if (map->buswidth == 0)
-	 map->buswidth = 1;
-
-      if (map->buswidth == 1){
-	 if (jedec_probe8(map,Base,priv) == 0) {
-		 printk("did recognize jedec chip\n");
-		 kfree(MTD);
-	         return NULL;
-	 }
-      }
-      if (map->buswidth == 2)
-	 jedec_probe16(map,Base,priv);
-      if (map->buswidth == 4)
-	 jedec_probe32(map,Base,priv);
-   }
-
-   // Get the biggest sector size
-   SectorSize = 0;
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-	   //	   printk("priv->chips[%d].jedec is %x\n",I,priv->chips[I].jedec);
-	   //	   printk("priv->chips[%d].sectorsize is %lx\n",I,priv->chips[I].sectorsize);
-      if (priv->chips[I].sectorsize > SectorSize)
-	 SectorSize = priv->chips[I].sectorsize;
-   }
-
-   // Quickly ensure that the other sector sizes are factors of the largest
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-      if ((SectorSize/priv->chips[I].sectorsize)*priv->chips[I].sectorsize != SectorSize)
-      {
-	 printk("mtd: Failed. Device has incompatible mixed sector sizes\n");
-	 kfree(MTD);
-	 return NULL;
-      }
-   }
-
-   /* Generate a part name that includes the number of different chips and
-      other configuration information */
-   count = 1;
-   strlcpy(Part,map->name,sizeof(Part)-10);
-   strcat(Part," ");
-   Uniq = 0;
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-      const struct JEDECTable *JEDEC;
-
-      if (priv->chips[I+1].jedec == priv->chips[I].jedec)
-      {
-	 count++;
-	 continue;
-      }
-
-      // Locate the chip in the jedec table
-      JEDEC = jedec_idtoinf(priv->chips[I].jedec >> 8,priv->chips[I].jedec);
-      if (JEDEC == 0)
-      {
-	 printk("mtd: Internal Error, JEDEC not set\n");
-	 kfree(MTD);
-	 return NULL;
-      }
-
-      if (Uniq != 0)
-	 strcat(Part,",");
-      Uniq++;
-
-      if (count != 1)
-	 sprintf(Part+strlen(Part),"%x*[%s]",count,JEDEC->name);
-      else
-	 sprintf(Part+strlen(Part),"%s",JEDEC->name);
-      if (strlen(Part) > sizeof(Part)*2/3)
-	 break;
-      count = 1;
-   }
-
-   /* Determine if the chips are organized in a linear fashion, or if there
-      are empty banks. Note, the last bank does not count here, only the
-      first banks are important. Holes on non-bank boundaries can not exist
-      due to the way the detection algorithm works. */
-   if (priv->size < my_bank_size)
-      my_bank_size = priv->size;
-   priv->is_banked = 0;
-   //printk("priv->size is %x, my_bank_size is %x\n",priv->size,my_bank_size);
-   //printk("priv->bank_fill[0] is %x\n",priv->bank_fill[0]);
-   if (!priv->size) {
-	   printk("priv->size is zero\n");
-	   kfree(MTD);
-	   return NULL;
-   }
-   if (priv->size/my_bank_size) {
-	   if (priv->size/my_bank_size == 1) {
-		   priv->size = my_bank_size;
-	   }
-	   else {
-		   for (I = 0; I != priv->size/my_bank_size - 1; I++)
-		   {
-		      if (priv->bank_fill[I] != my_bank_size)
-			 priv->is_banked = 1;
-
-		      /* This even could be eliminated, but new de-optimized read/write
-			 functions have to be written */
-		      printk("priv->bank_fill[%d] is %lx, priv->bank_fill[0] is %lx\n",I,priv->bank_fill[I],priv->bank_fill[0]);
-		      if (priv->bank_fill[I] != priv->bank_fill[0])
-		      {
-			 printk("mtd: Failed. Cannot handle unsymmetric banking\n");
-			 kfree(MTD);
-			 return NULL;
-		      }
-		   }
-	   }
-   }
-   if (priv->is_banked == 1)
-      strcat(Part,", banked");
-
-   //   printk("Part: '%s'\n",Part);
-
-   memset(MTD,0,sizeof(*MTD));
-  // strlcpy(MTD->name,Part,sizeof(MTD->name));
-   MTD->name = map->name;
-   MTD->type = MTD_NORFLASH;
-   MTD->flags = MTD_CAP_NORFLASH;
-   MTD->writesize = 1;
-   MTD->erasesize = SectorSize*(map->buswidth);
-   //   printk("MTD->erasesize is %x\n",(unsigned int)MTD->erasesize);
-   MTD->size = priv->size;
-   //   printk("MTD->size is %x\n",(unsigned int)MTD->size);
-   //MTD->module = THIS_MODULE; // ? Maybe this should be the low level module?
-   MTD->erase = flash_erase;
-   if (priv->is_banked == 1)
-      MTD->read = jedec_read_banked;
-   else
-      MTD->read = jedec_read;
-   MTD->write = flash_write;
-   MTD->sync = jedec_sync;
-   MTD->priv = map;
-   map->fldrv_priv = priv;
-   map->fldrv = &jedec_chipdrv;
-   __module_get(THIS_MODULE);
-   return MTD;
-}
-
-/* Helper for the JEDEC function, JEDEC numbers all have odd parity */
-static int checkparity(u_char C)
-{
-   u_char parity = 0;
-   while (C != 0)
-   {
-      parity ^= C & 1;
-      C >>= 1;
-   }
-
-   return parity == 1;
-}
-
-
-/* Take an array of JEDEC numbers that represent interleved flash chips
-   and process them. Check to make sure they are good JEDEC numbers, look
-   them up and then add them to the chip list */
-static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count,
-		  unsigned long base,struct jedec_private *priv)
-{
-   unsigned I,J;
-   unsigned long Size;
-   unsigned long SectorSize;
-   const struct JEDECTable *JEDEC;
-
-   // Test #2 JEDEC numbers exhibit odd parity
-   for (I = 0; I != Count; I++)
-   {
-      if (checkparity(Mfg[I]) == 0 || checkparity(Id[I]) == 0)
-	 return 0;
-   }
-
-   // Finally, just make sure all the chip sizes are the same
-   JEDEC = jedec_idtoinf(Mfg[0],Id[0]);
-
-   if (JEDEC == 0)
-   {
-      printk("mtd: Found JEDEC flash chip, but do not have a table entry for %x:%x\n",Mfg[0],Mfg[1]);
-      return 0;
-   }
-
-   Size = JEDEC->size;
-   SectorSize = JEDEC->sectorsize;
-   for (I = 0; I != Count; I++)
-   {
-      JEDEC = jedec_idtoinf(Mfg[0],Id[0]);
-      if (JEDEC == 0)
-      {
-	 printk("mtd: Found JEDEC flash chip, but do not have a table entry for %x:%x\n",Mfg[0],Mfg[1]);
-	 return 0;
-      }
-
-      if (Size != JEDEC->size || SectorSize != JEDEC->sectorsize)
-      {
-	 printk("mtd: Failed. Interleved flash does not have matching characteristics\n");
-	 return 0;
-      }
-   }
-
-   // Load the Chips
-   for (I = 0; I != MAX_JEDEC_CHIPS; I++)
-   {
-      if (priv->chips[I].jedec == 0)
-	 break;
-   }
-
-   if (I + Count > MAX_JEDEC_CHIPS)
-   {
-      printk("mtd: Device has too many chips. Increase MAX_JEDEC_CHIPS\n");
-      return 0;
-   }
-
-   // Add them to the table
-   for (J = 0; J != Count; J++)
-   {
-      unsigned long Bank;
-
-      JEDEC = jedec_idtoinf(Mfg[J],Id[J]);
-      priv->chips[I].jedec = (Mfg[J] << 8) | Id[J];
-      priv->chips[I].size = JEDEC->size;
-      priv->chips[I].sectorsize = JEDEC->sectorsize;
-      priv->chips[I].base = base + J;
-      priv->chips[I].datashift = J*8;
-      priv->chips[I].capabilities = JEDEC->capabilities;
-      priv->chips[I].offset = priv->size + J;
-
-      // log2 n :|
-      priv->chips[I].addrshift = 0;
-      for (Bank = Count; Bank != 1; Bank >>= 1, priv->chips[I].addrshift++);
-
-      // Determine how filled this bank is.
-      Bank = base & (~(my_bank_size-1));
-      if (priv->bank_fill[Bank/my_bank_size] < base +
-	  (JEDEC->size << priv->chips[I].addrshift) - Bank)
-	 priv->bank_fill[Bank/my_bank_size] =  base + (JEDEC->size << priv->chips[I].addrshift) - Bank;
-      I++;
-   }
-
-   priv->size += priv->chips[I-1].size*Count;
-
-   return priv->chips[I-1].size;
-}
-
-/* Lookup the chip information from the JEDEC ID table. */
-static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id)
-{
-   __u16 Id = (mfr << 8) | id;
-   unsigned long I = 0;
-   for (I = 0; JEDEC_table[I].jedec != 0; I++)
-      if (JEDEC_table[I].jedec == Id)
-	 return JEDEC_table + I;
-   return NULL;
-}
-
-// Look for flash using an 8 bit bus interface
-static int jedec_probe8(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv)
-{
-   #define flread(x) map_read8(map,base+x)
-   #define flwrite(v,x) map_write8(map,v,base+x)
-
-   const unsigned long AutoSel1 = 0xAA;
-   const unsigned long AutoSel2 = 0x55;
-   const unsigned long AutoSel3 = 0x90;
-   const unsigned long Reset = 0xF0;
-   __u32 OldVal;
-   __u8 Mfg[1];
-   __u8 Id[1];
-   unsigned I;
-   unsigned long Size;
-
-   // Wait for any write/erase operation to settle
-   OldVal = flread(base);
-   for (I = 0; OldVal != flread(base) && I < 10000; I++)
-      OldVal = flread(base);
-
-   // Reset the chip
-   flwrite(Reset,0x555);
-
-   // Send the sequence
-   flwrite(AutoSel1,0x555);
-   flwrite(AutoSel2,0x2AA);
-   flwrite(AutoSel3,0x555);
-
-   //  Get the JEDEC numbers
-   Mfg[0] = flread(0);
-   Id[0] = flread(1);
-   //   printk("Mfg is %x, Id is %x\n",Mfg[0],Id[0]);
-
-   Size = handle_jedecs(map,Mfg,Id,1,base,priv);
-   //   printk("handle_jedecs Size is %x\n",(unsigned int)Size);
-   if (Size == 0)
-   {
-      flwrite(Reset,0x555);
-      return 0;
-   }
-
-
-   // Reset.
-   flwrite(Reset,0x555);
-
-   return 1;
-
-   #undef flread
-   #undef flwrite
-}
-
-// Look for flash using a 16 bit bus interface (ie 2 8-bit chips)
-static int jedec_probe16(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv)
-{
-   return 0;
-}
-
-// Look for flash using a 32 bit bus interface (ie 4 8-bit chips)
-static int jedec_probe32(struct map_info *map,unsigned long base,
-		  struct jedec_private *priv)
-{
-   #define flread(x) map_read32(map,base+((x)<<2))
-   #define flwrite(v,x) map_write32(map,v,base+((x)<<2))
-
-   const unsigned long AutoSel1 = 0xAAAAAAAA;
-   const unsigned long AutoSel2 = 0x55555555;
-   const unsigned long AutoSel3 = 0x90909090;
-   const unsigned long Reset = 0xF0F0F0F0;
-   __u32 OldVal;
-   __u8 Mfg[4];
-   __u8 Id[4];
-   unsigned I;
-   unsigned long Size;
-
-   // Wait for any write/erase operation to settle
-   OldVal = flread(base);
-   for (I = 0; OldVal != flread(base) && I < 10000; I++)
-      OldVal = flread(base);
-
-   // Reset the chip
-   flwrite(Reset,0x555);
-
-   // Send the sequence
-   flwrite(AutoSel1,0x555);
-   flwrite(AutoSel2,0x2AA);
-   flwrite(AutoSel3,0x555);
-
-   // Test #1, JEDEC numbers are readable from 0x??00/0x??01
-   if (flread(0) != flread(0x100) ||
-       flread(1) != flread(0x101))
-   {
-      flwrite(Reset,0x555);
-      return 0;
-   }
-
-   // Split up the JEDEC numbers
-   OldVal = flread(0);
-   for (I = 0; I != 4; I++)
-      Mfg[I] = (OldVal >> (I*8));
-   OldVal = flread(1);
-   for (I = 0; I != 4; I++)
-      Id[I] = (OldVal >> (I*8));
-
-   Size = handle_jedecs(map,Mfg,Id,4,base,priv);
-   if (Size == 0)
-   {
-      flwrite(Reset,0x555);
-      return 0;
-   }
-
-   /* Check if there is address wrap around within a single bank, if this
-      returns JEDEC numbers then we assume that it is wrap around. Notice
-      we call this routine with the JEDEC return still enabled, if two or
-      more flashes have a truncated address space the probe test will still
-      work */
-   if (base + (Size<<2)+0x555 < map->size &&
-       base + (Size<<2)+0x555 < (base & (~(my_bank_size-1))) + my_bank_size)
-   {
-      if (flread(base+Size) != flread(base+Size + 0x100) ||
-	  flread(base+Size + 1) != flread(base+Size + 0x101))
-      {
-	 jedec_probe32(map,base+Size,priv);
-      }
-   }
-
-   // Reset.
-   flwrite(0xF0F0F0F0,0x555);
-
-   return 1;
-
-   #undef flread
-   #undef flwrite
-}
-
-/* Linear read. */
-static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len,
-		      size_t *retlen, u_char *buf)
-{
-   struct map_info *map = mtd->priv;
-
-   map_copy_from(map, buf, from, len);
-   *retlen = len;
-   return 0;
-}
-
-/* Banked read. Take special care to jump past the holes in the bank
-   mapping. This version assumes symetry in the holes.. */
-static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len,
-			     size_t *retlen, u_char *buf)
-{
-   struct map_info *map = mtd->priv;
-   struct jedec_private *priv = map->fldrv_priv;
-
-   *retlen = 0;
-   while (len > 0)
-   {
-      // Determine what bank and offset into that bank the first byte is
-      unsigned long bank = from & (~(priv->bank_fill[0]-1));
-      unsigned long offset = from & (priv->bank_fill[0]-1);
-      unsigned long get = len;
-      if (priv->bank_fill[0] - offset < len)
-	 get = priv->bank_fill[0] - offset;
-
-      bank /= priv->bank_fill[0];
-      map_copy_from(map,buf + *retlen,bank*my_bank_size + offset,get);
-
-      len -= get;
-      *retlen += get;
-      from += get;
-   }
-   return 0;
-}
-
-/* Pass the flags value that the flash return before it re-entered read
-   mode. */
-static void jedec_flash_failed(unsigned char code)
-{
-   /* Bit 5 being high indicates that there was an internal device
-      failure, erasure time limits exceeded or something */
-   if ((code & (1 << 5)) != 0)
-   {
-      printk("mtd: Internal Flash failure\n");
-      return;
-   }
-   printk("mtd: Programming didn't take\n");
-}
-
-/* This uses the erasure function described in the AMD Flash Handbook,
-   it will work for flashes with a fixed sector size only. Flashes with
-   a selection of sector sizes (ie the AMD Am29F800B) will need a different
-   routine. This routine tries to parallize erasing multiple chips/sectors
-   where possible */
-static int flash_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-   // Does IO to the currently selected chip
-   #define flread(x) map_read8(map,chip->base+((x)<<chip->addrshift))
-   #define flwrite(v,x) map_write8(map,v,chip->base+((x)<<chip->addrshift))
-
-   unsigned long Time = 0;
-   unsigned long NoTime = 0;
-   unsigned long start = instr->addr, len = instr->len;
-   unsigned int I;
-   struct map_info *map = mtd->priv;
-   struct jedec_private *priv = map->fldrv_priv;
-
-   // Verify the arguments..
-   if (start + len > mtd->size ||
-       (start % mtd->erasesize) != 0 ||
-       (len % mtd->erasesize) != 0 ||
-       (len/mtd->erasesize) == 0)
-      return -EINVAL;
-
-   jedec_flash_chip_scan(priv,start,len);
-
-   // Start the erase sequence on each chip
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-      unsigned long off;
-      struct jedec_flash_chip *chip = priv->chips + I;
-
-      if (chip->length == 0)
-	 continue;
-
-      if (chip->start + chip->length > chip->size)
-      {
-	 printk("DIE\n");
-	 return -EIO;
-      }
-
-      flwrite(0xF0,chip->start + 0x555);
-      flwrite(0xAA,chip->start + 0x555);
-      flwrite(0x55,chip->start + 0x2AA);
-      flwrite(0x80,chip->start + 0x555);
-      flwrite(0xAA,chip->start + 0x555);
-      flwrite(0x55,chip->start + 0x2AA);
-
-      /* Once we start selecting the erase sectors the delay between each
-         command must not exceed 50us or it will immediately start erasing
-         and ignore the other sectors */
-      for (off = 0; off < len; off += chip->sectorsize)
-      {
-	 // Check to make sure we didn't timeout
-	 flwrite(0x30,chip->start + off);
-	 if (off == 0)
-	    continue;
-	 if ((flread(chip->start + off) & (1 << 3)) != 0)
-	 {
-	    printk("mtd: Ack! We timed out the erase timer!\n");
-	    return -EIO;
-	 }
-      }
-   }
-
-   /* We could split this into a timer routine and return early, performing
-      background erasure.. Maybe later if the need warrents */
-
-   /* Poll the flash for erasure completion, specs say this can take as long
-      as 480 seconds to do all the sectors (for a 2 meg flash).
-      Erasure time is dependent on chip age, temp and wear.. */
-
-   /* This being a generic routine assumes a 32 bit bus. It does read32s
-      and bundles interleved chips into the same grouping. This will work
-      for all bus widths */
-   Time = 0;
-   NoTime = 0;
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-      struct jedec_flash_chip *chip = priv->chips + I;
-      unsigned long off = 0;
-      unsigned todo[4] = {0,0,0,0};
-      unsigned todo_left = 0;
-      unsigned J;
-
-      if (chip->length == 0)
-	 continue;
-
-      /* Find all chips in this data line, realistically this is all
-         or nothing up to the interleve count */
-      for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++)
-      {
-	 if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) ==
-	     (chip->base & (~((1<<chip->addrshift)-1))))
-	 {
-	    todo_left++;
-	    todo[priv->chips[J].base & ((1<<chip->addrshift)-1)] = 1;
-	 }
-      }
-
-      /*      printk("todo: %x %x %x %x\n",(short)todo[0],(short)todo[1],
-	      (short)todo[2],(short)todo[3]);
-      */
-      while (1)
-      {
-	 __u32 Last[4];
-	 unsigned long Count = 0;
-
-	 /* During erase bit 7 is held low and bit 6 toggles, we watch this,
-	    should it stop toggling or go high then the erase is completed,
-  	    or this is not really flash ;> */
-	 switch (map->buswidth) {
-	 case 1:
-	    Last[0] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[1] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[2] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    break;
-	 case 2:
-	    Last[0] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[1] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[2] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    break;
-	 case 3:
-	    Last[0] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[1] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    Last[2] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
-	    break;
-	 }
-	 Count = 3;
-	 while (todo_left != 0)
-	 {
-	    for (J = 0; J != 4; J++)
-	    {
-	       __u8 Byte1 = (Last[(Count-1)%4] >> (J*8)) & 0xFF;
-	       __u8 Byte2 = (Last[(Count-2)%4] >> (J*8)) & 0xFF;
-	       __u8 Byte3 = (Last[(Count-3)%4] >> (J*8)) & 0xFF;
-	       if (todo[J] == 0)
-		  continue;
-
-	       if ((Byte1 & (1 << 7)) == 0 && Byte1 != Byte2)
-	       {
-//		  printk("Check %x %x %x\n",(short)J,(short)Byte1,(short)Byte2);
-		  continue;
-	       }
-
-	       if (Byte1 == Byte2)
-	       {
-		  jedec_flash_failed(Byte3);
-		  return -EIO;
-	       }
-
-	       todo[J] = 0;
-	       todo_left--;
-	    }
-
-/*	    if (NoTime == 0)
-	       Time += HZ/10 - schedule_timeout(HZ/10);*/
-	    NoTime = 0;
-
-	    switch (map->buswidth) {
-	    case 1:
-	       Last[Count % 4] = map_read8(map,(chip->base >> chip->addrshift) + chip->start + off);
-	      break;
-	    case 2:
-	       Last[Count % 4] = map_read16(map,(chip->base >> chip->addrshift) + chip->start + off);
-	      break;
-	    case 4:
-	       Last[Count % 4] = map_read32(map,(chip->base >> chip->addrshift) + chip->start + off);
-	      break;
-	    }
-	    Count++;
-
-/*	    // Count time, max of 15s per sector (according to AMD)
-	    if (Time > 15*len/mtd->erasesize*HZ)
-	    {
-	       printk("mtd: Flash Erase Timed out\n");
-	       return -EIO;
-	    }	    */
-	 }
-
-	 // Skip to the next chip if we used chip erase
-	 if (chip->length == chip->size)
-	    off = chip->size;
-	 else
-	    off += chip->sectorsize;
-
-	 if (off >= chip->length)
-	    break;
-	 NoTime = 1;
-      }
-
-      for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++)
-      {
-	 if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) ==
-	     (chip->base & (~((1<<chip->addrshift)-1))))
-	    priv->chips[J].length = 0;
-      }
-   }
-
-   //printk("done\n");
-   instr->state = MTD_ERASE_DONE;
-   mtd_erase_callback(instr);
-   return 0;
-
-   #undef flread
-   #undef flwrite
-}
-
-/* This is the simple flash writing function. It writes to every byte, in
-   sequence. It takes care of how to properly address the flash if
-   the flash is interleved. It can only be used if all the chips in the
-   array are identical!*/
-static int flash_write(struct mtd_info *mtd, loff_t start, size_t len,
-		       size_t *retlen, const u_char *buf)
-{
-   /* Does IO to the currently selected chip. It takes the bank addressing
-      base (which is divisible by the chip size) adds the necessary lower bits
-      of addrshift (interleave index) and then adds the control register index. */
-   #define flread(x) map_read8(map,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift))
-   #define flwrite(v,x) map_write8(map,v,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift))
-
-   struct map_info *map = mtd->priv;
-   struct jedec_private *priv = map->fldrv_priv;
-   unsigned long base;
-   unsigned long off;
-   size_t save_len = len;
-
-   if (start + len > mtd->size)
-      return -EIO;
-
-   //printk("Here");
-
-   //printk("flash_write: start is %x, len is %x\n",start,(unsigned long)len);
-   while (len != 0)
-   {
-      struct jedec_flash_chip *chip = priv->chips;
-      unsigned long bank;
-      unsigned long boffset;
-
-      // Compute the base of the flash.
-      off = ((unsigned long)start) % (chip->size << chip->addrshift);
-      base = start - off;
-
-      // Perform banked addressing translation.
-      bank = base & (~(priv->bank_fill[0]-1));
-      boffset = base & (priv->bank_fill[0]-1);
-      bank = (bank/priv->bank_fill[0])*my_bank_size;
-      base = bank + boffset;
-
-    //  printk("Flasing %X %X %X\n",base,chip->size,len);
-     // printk("off is %x, compare with %x\n",off,chip->size << chip->addrshift);
-
-      // Loop over this page
-      for (; off != (chip->size << chip->addrshift) && len != 0; start++, len--, off++,buf++)
-      {
-	 unsigned char oldbyte = map_read8(map,base+off);
-	 unsigned char Last[4];
-	 unsigned long Count = 0;
-
-	 if (oldbyte == *buf) {
-	//	 printk("oldbyte and *buf is %x,len is %x\n",oldbyte,len);
-	    continue;
-	 }
-	 if (((~oldbyte) & *buf) != 0)
-	    printk("mtd: warn: Trying to set a 0 to a 1\n");
-
-	 // Write
-	 flwrite(0xAA,0x555);
-	 flwrite(0x55,0x2AA);
-	 flwrite(0xA0,0x555);
-	 map_write8(map,*buf,base + off);
-	 Last[0] = map_read8(map,base + off);
-	 Last[1] = map_read8(map,base + off);
-	 Last[2] = map_read8(map,base + off);
-
-	 /* Wait for the flash to finish the operation. We store the last 4
-	    status bytes that have been retrieved so we can determine why
-	    it failed. The toggle bits keep toggling when there is a
-	    failure */
-	 for (Count = 3; Last[(Count - 1) % 4] != Last[(Count - 2) % 4] &&
-	      Count < 10000; Count++)
-	    Last[Count % 4] = map_read8(map,base + off);
-	 if (Last[(Count - 1) % 4] != *buf)
-	 {
-	    jedec_flash_failed(Last[(Count - 3) % 4]);
-	    return -EIO;
-	 }
-      }
-   }
-   *retlen = save_len;
-   return 0;
-}
-
-/* This is used to enhance the speed of the erase routine,
-   when things are being done to multiple chips it is possible to
-   parallize the operations, particularly full memory erases of multi
-   chip memories benifit */
-static void jedec_flash_chip_scan(struct jedec_private *priv,unsigned long start,
-		     unsigned long len)
-{
-   unsigned int I;
-
-   // Zero the records
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-      priv->chips[I].start = priv->chips[I].length = 0;
-
-   // Intersect the region with each chip
-   for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++)
-   {
-      struct jedec_flash_chip *chip = priv->chips + I;
-      unsigned long ByteStart;
-      unsigned long ChipEndByte = chip->offset + (chip->size << chip->addrshift);
-
-      // End is before this chip or the start is after it
-      if (start+len < chip->offset ||
-	  ChipEndByte - (1 << chip->addrshift) < start)
-	 continue;
-
-      if (start < chip->offset)
-      {
-	 ByteStart = chip->offset;
-	 chip->start = 0;
-      }
-      else
-      {
-	 chip->start = (start - chip->offset + (1 << chip->addrshift)-1) >> chip->addrshift;
-	 ByteStart = start;
-      }
-
-      if (start + len >= ChipEndByte)
-	 chip->length = (ChipEndByte - ByteStart) >> chip->addrshift;
-      else
-	 chip->length = (start + len - ByteStart + (1 << chip->addrshift)-1) >> chip->addrshift;
-   }
-}
-
-int __init jedec_init(void)
-{
-	register_mtd_chip_driver(&jedec_chipdrv);
-	return 0;
-}
-
-static void __exit jedec_exit(void)
-{
-	unregister_mtd_chip_driver(&jedec_chipdrv);
-}
-
-module_init(jedec_init);
-module_exit(jedec_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jason Gunthorpe <jgg@deltatee.com> et al.");
-MODULE_DESCRIPTION("Old MTD chip driver for JEDEC-compliant flash chips");

drivers/mtd/chips/sharp.c

@@ -1,601 +0,0 @@
-/*
- * MTD chip driver for pre-CFI Sharp flash chips
- *
- * Copyright 2000,2001 David A. Schleef <ds@schleef.org>
- *           2000,2001 Lineo, Inc.
- *
- * $Id: sharp.c,v 1.17 2005/11/29 14:28:28 gleixner Exp $
- *
- * Devices supported:
- *   LH28F016SCT Symmetrical block flash memory, 2Mx8
- *   LH28F008SCT Symmetrical block flash memory, 1Mx8
- *
- * Documentation:
- *   http://www.sharpmeg.com/datasheets/memic/flashcmp/
- *   http://www.sharpmeg.com/datasheets/memic/flashcmp/01symf/16m/016sctl9.pdf
- *   016sctl9.pdf
- *
- * Limitations:
- *   This driver only supports 4x1 arrangement of chips.
- *   Not tested on anything but PowerPC.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/cfi.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-
-#define CMD_RESET		0xffffffff
-#define CMD_READ_ID		0x90909090
-#define CMD_READ_STATUS		0x70707070
-#define CMD_CLEAR_STATUS	0x50505050
-#define CMD_BLOCK_ERASE_1	0x20202020
-#define CMD_BLOCK_ERASE_2	0xd0d0d0d0
-#define CMD_BYTE_WRITE		0x40404040
-#define CMD_SUSPEND		0xb0b0b0b0
-#define CMD_RESUME		0xd0d0d0d0
-#define CMD_SET_BLOCK_LOCK_1	0x60606060
-#define CMD_SET_BLOCK_LOCK_2	0x01010101
-#define CMD_SET_MASTER_LOCK_1	0x60606060
-#define CMD_SET_MASTER_LOCK_2	0xf1f1f1f1
-#define CMD_CLEAR_BLOCK_LOCKS_1	0x60606060
-#define CMD_CLEAR_BLOCK_LOCKS_2	0xd0d0d0d0
-
-#define SR_READY		0x80808080 // 1 = ready
-#define SR_ERASE_SUSPEND	0x40404040 // 1 = block erase suspended
-#define SR_ERROR_ERASE		0x20202020 // 1 = error in block erase or clear lock bits
-#define SR_ERROR_WRITE		0x10101010 // 1 = error in byte write or set lock bit
-#define	SR_VPP			0x08080808 // 1 = Vpp is low
-#define SR_WRITE_SUSPEND	0x04040404 // 1 = byte write suspended
-#define SR_PROTECT		0x02020202 // 1 = lock bit set
-#define SR_RESERVED		0x01010101
-
-#define SR_ERRORS (SR_ERROR_ERASE|SR_ERROR_WRITE|SR_VPP|SR_PROTECT)
-
-/* Configuration options */
-
-#undef AUTOUNLOCK  /* automatically unlocks blocks before erasing */
-
-static struct mtd_info *sharp_probe(struct map_info *);
-
-static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd);
-
-static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf);
-static int sharp_write(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, const u_char *buf);
-static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr);
-static void sharp_sync(struct mtd_info *mtd);
-static int sharp_suspend(struct mtd_info *mtd);
-static void sharp_resume(struct mtd_info *mtd);
-static void sharp_destroy(struct mtd_info *mtd);
-
-static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
-	unsigned long adr, __u32 datum);
-static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr);
-#ifdef AUTOUNLOCK
-static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr);
-#endif
-
-
-struct sharp_info{
-	struct flchip *chip;
-	int bogus;
-	int chipshift;
-	int numchips;
-	struct flchip chips[1];
-};
-
-static void sharp_destroy(struct mtd_info *mtd);
-
-static struct mtd_chip_driver sharp_chipdrv = {
-	.probe		= sharp_probe,
-	.destroy	= sharp_destroy,
-	.name		= "sharp",
-	.module		= THIS_MODULE
-};
-
-
-static struct mtd_info *sharp_probe(struct map_info *map)
-{
-	struct mtd_info *mtd = NULL;
-	struct sharp_info *sharp = NULL;
-	int width;
-
-	mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
-	if(!mtd)
-		return NULL;
-
-	sharp = kzalloc(sizeof(*sharp), GFP_KERNEL);
-	if(!sharp) {
-		kfree(mtd);
-		return NULL;
-	}
-
-	width = sharp_probe_map(map,mtd);
-	if(!width){
-		kfree(mtd);
-		kfree(sharp);
-		return NULL;
-	}
-
-	mtd->priv = map;
-	mtd->type = MTD_NORFLASH;
-	mtd->erase = sharp_erase;
-	mtd->read = sharp_read;
-	mtd->write = sharp_write;
-	mtd->sync = sharp_sync;
-	mtd->suspend = sharp_suspend;
-	mtd->resume = sharp_resume;
-	mtd->flags = MTD_CAP_NORFLASH;
-	mtd->writesize = 1;
-	mtd->name = map->name;
-
-	sharp->chipshift = 23;
-	sharp->numchips = 1;
-	sharp->chips[0].start = 0;
-	sharp->chips[0].state = FL_READY;
-	sharp->chips[0].mutex = &sharp->chips[0]._spinlock;
-	sharp->chips[0].word_write_time = 0;
-	init_waitqueue_head(&sharp->chips[0].wq);
-	spin_lock_init(&sharp->chips[0]._spinlock);
-
-	map->fldrv = &sharp_chipdrv;
-	map->fldrv_priv = sharp;
-
-	__module_get(THIS_MODULE);
-	return mtd;
-}
-
-static inline void sharp_send_cmd(struct map_info *map, unsigned long cmd, unsigned long adr)
-{
-	map_word map_cmd;
-	map_cmd.x[0] = cmd;
-	map_write(map, map_cmd, adr);
-}
-
-static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
-{
-	map_word tmp, read0, read4;
-	unsigned long base = 0;
-	int width = 4;
-
-	tmp = map_read(map, base+0);
-
-	sharp_send_cmd(map, CMD_READ_ID, base+0);
-
-	read0 = map_read(map, base+0);
-	read4 = map_read(map, base+4);
-	if(read0.x[0] == 0x89898989){
-		printk("Looks like sharp flash\n");
-		switch(read4.x[0]){
-		case 0xaaaaaaaa:
-		case 0xa0a0a0a0:
-			/* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/
-			/* a0 - LH28F016SCT-Z4  2Mx8, 32 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x200000 * width;
-			return width;
-		case 0xa6a6a6a6:
-			/* a6 - LH28F008SCT-L12 1Mx8, 16 64k blocks*/
-			/* a6 - LH28F008SCR-L85 1Mx8, 16 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x100000 * width;
-			return width;
-#if 0
-		case 0x00000000: /* unknown */
-			/* XX - LH28F004SCT 512kx8, 8 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x80000 * width;
-			return width;
-#endif
-		default:
-			printk("Sort-of looks like sharp flash, 0x%08lx 0x%08lx\n",
-				read0.x[0], read4.x[0]);
-		}
-	}else if((map_read(map, base+0).x[0] == CMD_READ_ID)){
-		/* RAM, probably */
-		printk("Looks like RAM\n");
-		map_write(map, tmp, base+0);
-	}else{
-		printk("Doesn't look like sharp flash, 0x%08lx 0x%08lx\n",
-			read0.x[0], read4.x[0]);
-	}
-
-	return 0;
-}
-
-/* This function returns with the chip->mutex lock held. */
-static int sharp_wait(struct map_info *map, struct flchip *chip)
-{
-	int i;
-	map_word status;
-	unsigned long timeo = jiffies + HZ;
-	DECLARE_WAITQUEUE(wait, current);
-	int adr = 0;
-
-retry:
-	spin_lock_bh(chip->mutex);
-
-	switch(chip->state){
-	case FL_READY:
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		chip->state = FL_STATUS;
-	case FL_STATUS:
-		for(i=0;i<100;i++){
-			status = map_read(map, adr);
-			if((status.x[0] & SR_READY)==SR_READY)
-				break;
-			udelay(1);
-		}
-		break;
-	default:
-		printk("Waiting for chip\n");
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		spin_unlock_bh(chip->mutex);
-
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		if(signal_pending(current))
-			return -EINTR;
-
-		timeo = jiffies + HZ;
-
-		goto retry;
-	}
-
-	sharp_send_cmd(map, CMD_RESET, adr);
-
-	chip->state = FL_READY;
-
-	return 0;
-}
-
-static void sharp_release(struct flchip *chip)
-{
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-}
-
-static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	int chipnum;
-	int ret = 0;
-	int ofs = 0;
-
-	chipnum = (from >> sharp->chipshift);
-	ofs = from & ((1 << sharp->chipshift)-1);
-
-	*retlen = 0;
-
-	while(len){
-		unsigned long thislen;
-
-		if(chipnum>=sharp->numchips)
-			break;
-
-		thislen = len;
-		if(ofs+thislen >= (1<<sharp->chipshift))
-			thislen = (1<<sharp->chipshift) - ofs;
-
-		ret = sharp_wait(map,&sharp->chips[chipnum]);
-		if(ret<0)
-			break;
-
-		map_copy_from(map,buf,ofs,thislen);
-
-		sharp_release(&sharp->chips[chipnum]);
-
-		*retlen += thislen;
-		len -= thislen;
-		buf += thislen;
-
-		ofs = 0;
-		chipnum++;
-	}
-	return ret;
-}
-
-static int sharp_write(struct mtd_info *mtd, loff_t to, size_t len,
-	size_t *retlen, const u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	int ret = 0;
-	int i,j;
-	int chipnum;
-	unsigned long ofs;
-	union { u32 l; unsigned char uc[4]; } tbuf;
-
-	*retlen = 0;
-
-	while(len){
-		tbuf.l = 0xffffffff;
-		chipnum = to >> sharp->chipshift;
-		ofs = to & ((1<<sharp->chipshift)-1);
-
-		j=0;
-		for(i=ofs&3;i<4 && len;i++){
-			tbuf.uc[i] = *buf;
-			buf++;
-			to++;
-			len--;
-			j++;
-		}
-		sharp_write_oneword(map, &sharp->chips[chipnum], ofs&~3, tbuf.l);
-		if(ret<0)
-			return ret;
-		(*retlen)+=j;
-	}
-
-	return 0;
-}
-
-static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
-	unsigned long adr, __u32 datum)
-{
-	int ret;
-	int timeo;
-	int try;
-	int i;
-	map_word data, status;
-
-	status.x[0] = 0;
-	ret = sharp_wait(map,chip);
-
-	for(try=0;try<10;try++){
-		sharp_send_cmd(map, CMD_BYTE_WRITE, adr);
-		/* cpu_to_le32 -> hack to fix the writel be->le conversion */
-		data.x[0] = cpu_to_le32(datum);
-		map_write(map, data, adr);
-
-		chip->state = FL_WRITING;
-
-		timeo = jiffies + (HZ/2);
-
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		for(i=0;i<100;i++){
-			status = map_read(map, adr);
-			if((status.x[0] & SR_READY) == SR_READY)
-				break;
-		}
-		if(i==100){
-			printk("sharp: timed out writing\n");
-		}
-
-		if(!(status.x[0] & SR_ERRORS))
-			break;
-
-		printk("sharp: error writing byte at addr=%08lx status=%08lx\n", adr, status.x[0]);
-
-		sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-	}
-	sharp_send_cmd(map, CMD_RESET, adr);
-	chip->state = FL_READY;
-
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-
-	return 0;
-}
-
-static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	unsigned long adr,len;
-	int chipnum, ret=0;
-
-//printk("sharp_erase()\n");
-	if(instr->addr & (mtd->erasesize - 1))
-		return -EINVAL;
-	if(instr->len & (mtd->erasesize - 1))
-		return -EINVAL;
-	if(instr->len + instr->addr > mtd->size)
-		return -EINVAL;
-
-	chipnum = instr->addr >> sharp->chipshift;
-	adr = instr->addr & ((1<<sharp->chipshift)-1);
-	len = instr->len;
-
-	while(len){
-		ret = sharp_erase_oneblock(map, &sharp->chips[chipnum], adr);
-		if(ret)return ret;
-
-		adr += mtd->erasesize;
-		len -= mtd->erasesize;
-		if(adr >> sharp->chipshift){
-			adr = 0;
-			chipnum++;
-			if(chipnum>=sharp->numchips)
-				break;
-		}
-	}
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
-}
-
-static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int ret;
-	unsigned long timeo;
-	map_word status;
-	DECLARE_WAITQUEUE(wait, current);
-
-	sharp_send_cmd(map, CMD_READ_STATUS, adr);
-	status = map_read(map, adr);
-
-	timeo = jiffies + HZ;
-
-	while(time_before(jiffies, timeo)){
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		status = map_read(map, adr);
-		if((status.x[0] & SR_READY)==SR_READY){
-			ret = 0;
-			goto out;
-		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		//spin_unlock_bh(chip->mutex);
-
-		schedule_timeout(1);
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		//spin_lock_bh(chip->mutex);
-
-		if (signal_pending(current)){
-			ret = -EINTR;
-			goto out;
-		}
-
-	}
-	ret = -ETIME;
-out:
-	return ret;
-}
-
-static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int ret;
-	//int timeo;
-	map_word status;
-	//int i;
-
-//printk("sharp_erase_oneblock()\n");
-
-#ifdef AUTOUNLOCK
-	/* This seems like a good place to do an unlock */
-	sharp_unlock_oneblock(map,chip,adr);
-#endif
-
-	sharp_send_cmd(map, CMD_BLOCK_ERASE_1, adr);
-	sharp_send_cmd(map, CMD_BLOCK_ERASE_2, adr);
-
-	chip->state = FL_ERASING;
-
-	ret = sharp_do_wait_for_ready(map,chip,adr);
-	if(ret<0)return ret;
-
-	sharp_send_cmd(map, CMD_READ_STATUS, adr);
-	status = map_read(map, adr);
-
-	if(!(status.x[0] & SR_ERRORS)){
-		sharp_send_cmd(map, CMD_RESET, adr);
-		chip->state = FL_READY;
-		//spin_unlock_bh(chip->mutex);
-		return 0;
-	}
-
-	printk("sharp: error erasing block at addr=%08lx status=%08lx\n", adr, status.x[0]);
-	sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-
-	//spin_unlock_bh(chip->mutex);
-
-	return -EIO;
-}
-
-#ifdef AUTOUNLOCK
-static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int i;
-	map_word status;
-
-	sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_1, adr);
-	sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_2, adr);
-
-	udelay(100);
-
-	status = map_read(map, adr);
-	printk("status=%08lx\n", status.x[0]);
-
-	for(i=0;i<1000;i++){
-		//sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		status = map_read(map, adr);
-		if((status.x[0] & SR_READY) == SR_READY)
-			break;
-		udelay(100);
-	}
-	if(i==1000){
-		printk("sharp: timed out unlocking block\n");
-	}
-
-	if(!(status.x[0] & SR_ERRORS)){
-		sharp_send_cmd(map, CMD_RESET, adr);
-		chip->state = FL_READY;
-		return;
-	}
-
-	printk("sharp: error unlocking block at addr=%08lx status=%08lx\n", adr, status.x[0]);
-	sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-}
-#endif
-
-static void sharp_sync(struct mtd_info *mtd)
-{
-	//printk("sharp_sync()\n");
-}
-
-static int sharp_suspend(struct mtd_info *mtd)
-{
-	printk("sharp_suspend()\n");
-	return -EINVAL;
-}
-
-static void sharp_resume(struct mtd_info *mtd)
-{
-	printk("sharp_resume()\n");
-
-}
-
-static void sharp_destroy(struct mtd_info *mtd)
-{
-	printk("sharp_destroy()\n");
-
-}
-
-static int __init sharp_probe_init(void)
-{
-	printk("MTD Sharp chip driver <ds@lineo.com>\n");
-
-	register_mtd_chip_driver(&sharp_chipdrv);
-
-	return 0;
-}
-
-static void __exit sharp_probe_exit(void)
-{
-	unregister_mtd_chip_driver(&sharp_chipdrv);
-}
-
-module_init(sharp_probe_init);
-module_exit(sharp_probe_exit);
-
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("David Schleef <ds@schleef.org>");
-MODULE_DESCRIPTION("Old MTD chip driver for pre-CFI Sharp flash chips");