diff options
Diffstat (limited to 'drivers/mtd')
67 files changed, 3919 insertions, 529 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index a304b34c263..26f75c29944 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -164,9 +164,15 @@ config MTD_CHAR memory chips, and also use ioctl() to obtain information about the device, or to erase parts of it. +config MTD_BLKDEVS + tristate "Common interface to block layer for MTD 'translation layers'" + depends on MTD && BLOCK + default n + config MTD_BLOCK tristate "Caching block device access to MTD devices" depends on MTD && BLOCK + select MTD_BLKDEVS ---help--- Although most flash chips have an erase size too large to be useful as block devices, it is possible to use MTD devices which are based @@ -189,6 +195,7 @@ config MTD_BLOCK config MTD_BLOCK_RO tristate "Readonly block device access to MTD devices" depends on MTD_BLOCK!=y && MTD && BLOCK + select MTD_BLKDEVS help This allows you to mount read-only file systems (such as cramfs) from an MTD device, without the overhead (and danger) of the caching @@ -200,6 +207,7 @@ config MTD_BLOCK_RO config FTL tristate "FTL (Flash Translation Layer) support" depends on MTD && BLOCK + select MTD_BLKDEVS ---help--- This provides support for the original Flash Translation Layer which is part of the PCMCIA specification. It uses a kind of pseudo- @@ -216,6 +224,7 @@ config FTL config NFTL tristate "NFTL (NAND Flash Translation Layer) support" depends on MTD && BLOCK + select MTD_BLKDEVS ---help--- This provides support for the NAND Flash Translation Layer which is used on M-Systems' DiskOnChip devices. It uses a kind of pseudo- @@ -239,6 +248,7 @@ config NFTL_RW config INFTL tristate "INFTL (Inverse NAND Flash Translation Layer) support" depends on MTD && BLOCK + select MTD_BLKDEVS ---help--- This provides support for the Inverse NAND Flash Translation Layer which is used on M-Systems' newer DiskOnChip devices. It @@ -256,6 +266,7 @@ config INFTL config RFD_FTL tristate "Resident Flash Disk (Flash Translation Layer) support" depends on MTD && BLOCK + select MTD_BLKDEVS ---help--- This provides support for the flash translation layer known as the Resident Flash Disk (RFD), as used by the Embedded BIOS @@ -265,8 +276,8 @@ config RFD_FTL config SSFDC tristate "NAND SSFDC (SmartMedia) read only translation layer" - depends on MTD - default n + depends on MTD && BLOCK + select MTD_BLKDEVS help This enables read only access to SmartMedia formatted NAND flash. You can mount it with FAT file system. diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 1e36b9aed98..c130e6261ad 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -15,13 +15,14 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o # 'Users' - code which presents functionality to userspace. obj-$(CONFIG_MTD_CHAR) += mtdchar.o -obj-$(CONFIG_MTD_BLOCK) += mtdblock.o mtd_blkdevs.o -obj-$(CONFIG_MTD_BLOCK_RO) += mtdblock_ro.o mtd_blkdevs.o -obj-$(CONFIG_FTL) += ftl.o mtd_blkdevs.o -obj-$(CONFIG_NFTL) += nftl.o mtd_blkdevs.o -obj-$(CONFIG_INFTL) += inftl.o mtd_blkdevs.o -obj-$(CONFIG_RFD_FTL) += rfd_ftl.o mtd_blkdevs.o -obj-$(CONFIG_SSFDC) += ssfdc.o mtd_blkdevs.o +obj-$(CONFIG_MTD_BLKDEVS) += mtd_blkdevs.o +obj-$(CONFIG_MTD_BLOCK) += mtdblock.o +obj-$(CONFIG_MTD_BLOCK_RO) += mtdblock_ro.o +obj-$(CONFIG_FTL) += ftl.o +obj-$(CONFIG_NFTL) += nftl.o +obj-$(CONFIG_INFTL) += inftl.o +obj-$(CONFIG_RFD_FTL) += rfd_ftl.o +obj-$(CONFIG_SSFDC) += ssfdc.o nftl-objs := nftlcore.o nftlmount.o inftl-objs := inftlcore.o inftlmount.o diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c index 6a45be04564..52d51eb91c1 100644 --- a/drivers/mtd/afs.c +++ b/drivers/mtd/afs.c @@ -207,11 +207,10 @@ static int parse_afs_partitions(struct mtd_info *mtd, if (!sz) return ret; - parts = kmalloc(sz, GFP_KERNEL); + parts = kzalloc(sz, GFP_KERNEL); if (!parts) return -ENOMEM; - memset(parts, 0, sz); str = (char *)(parts + idx); /* diff --git a/drivers/mtd/chips/amd_flash.c b/drivers/mtd/chips/amd_flash.c index 16eaca69fb5..e7999f15d85 100644 --- a/drivers/mtd/chips/amd_flash.c +++ b/drivers/mtd/chips/amd_flash.c @@ -643,13 +643,12 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) int reg_idx; int offset; - mtd = (struct mtd_info*)kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) { printk(KERN_WARNING "%s: kmalloc failed for info structure\n", map->name); return NULL; } - memset(mtd, 0, sizeof(*mtd)); mtd->priv = map; memset(&temp, 0, sizeof(temp)); diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 296159ec518..f69184a92eb 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -337,12 +337,11 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) struct mtd_info *mtd; int i; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) { printk(KERN_ERR "Failed to allocate memory for MTD device\n"); return NULL; } - memset(mtd, 0, sizeof(*mtd)); mtd->priv = map; mtd->type = MTD_NORFLASH; @@ -2224,6 +2223,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd) case FL_CFI_QUERY: case FL_JEDEC_QUERY: if (chip->oldstate == FL_READY) { + /* place the chip in a known state before suspend */ + map_write(map, CMD(0xFF), cfi->chips[i].start); chip->oldstate = chip->state; chip->state = FL_PM_SUSPENDED; /* No need to wake_up() on this state change - diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 702ae4cd869..e3acd398fb3 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -48,6 +48,7 @@ #define MANUFACTURER_ATMEL 0x001F #define MANUFACTURER_SST 0x00BF #define SST49LF004B 0x0060 +#define SST49LF040B 0x0050 #define SST49LF008A 0x005a #define AT49BV6416 0x00d6 @@ -233,6 +234,7 @@ static struct cfi_fixup cfi_fixup_table[] = { }; static struct cfi_fixup jedec_fixup_table[] = { { MANUFACTURER_SST, SST49LF004B, fixup_use_fwh_lock, NULL, }, + { MANUFACTURER_SST, SST49LF040B, fixup_use_fwh_lock, NULL, }, { MANUFACTURER_SST, SST49LF008A, fixup_use_fwh_lock, NULL, }, { 0, 0, NULL, NULL } }; @@ -255,12 +257,11 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) struct mtd_info *mtd; int i; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) { printk(KERN_WARNING "Failed to allocate memory for MTD device\n"); return NULL; } - memset(mtd, 0, sizeof(*mtd)); mtd->priv = map; mtd->type = MTD_NORFLASH; @@ -519,10 +520,12 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr if (mode == FL_WRITING) /* FIXME: Erase-suspend-program appears broken. */ goto sleep; - if (!(mode == FL_READY || mode == FL_POINT + if (!( mode == FL_READY + || mode == FL_POINT || !cfip || (mode == FL_WRITING && (cfip->EraseSuspend & 0x2)) - || (mode == FL_WRITING && (cfip->EraseSuspend & 0x1)))) + || (mode == FL_WRITING && (cfip->EraseSuspend & 0x1) + ))) goto sleep; /* We could check to see if we're trying to access the sector diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index fae70a5db54..d56849f5f10 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -172,7 +172,7 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) int i,j; unsigned long devsize = (1<<cfi->cfiq->DevSize) * cfi->interleave; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); //printk(KERN_DEBUG "number of CFI chips: %d\n", cfi->numchips); if (!mtd) { @@ -181,7 +181,6 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) return NULL; } - memset(mtd, 0, sizeof(*mtd)); mtd->priv = map; mtd->type = MTD_NORFLASH; mtd->size = devsize * cfi->numchips; diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c index cdb0f590b40..2eb696d7b97 100644 --- a/drivers/mtd/chips/gen_probe.c +++ b/drivers/mtd/chips/gen_probe.c @@ -40,7 +40,7 @@ struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp) if (mtd) { if (mtd->size > map->size) { printk(KERN_WARNING "Reducing visibility of %ldKiB chip to %ldKiB\n", - (unsigned long)mtd->size >> 10, + (unsigned long)mtd->size >> 10, (unsigned long)map->size >> 10); mtd->size = map->size; } @@ -113,13 +113,12 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi } mapsize = (max_chips + BITS_PER_LONG-1) / BITS_PER_LONG; - chip_map = kmalloc(mapsize, GFP_KERNEL); + chip_map = kzalloc(mapsize, GFP_KERNEL); if (!chip_map) { printk(KERN_WARNING "%s: kmalloc failed for CFI chip map\n", map->name); kfree(cfi.cfiq); return NULL; } - memset (chip_map, 0, mapsize); set_bit(0, chip_map); /* Mark first chip valid */ diff --git a/drivers/mtd/chips/jedec.c b/drivers/mtd/chips/jedec.c index 2c3f019197c..14e57b2bf84 100644 --- a/drivers/mtd/chips/jedec.c +++ b/drivers/mtd/chips/jedec.c @@ -116,11 +116,10 @@ static struct mtd_info *jedec_probe(struct map_info *map) char Part[200]; memset(&priv,0,sizeof(priv)); - MTD = kmalloc(sizeof(struct mtd_info) + sizeof(struct jedec_private), GFP_KERNEL); + MTD = kzalloc(sizeof(struct mtd_info) + sizeof(struct jedec_private), GFP_KERNEL); if (!MTD) return NULL; - memset(MTD, 0, sizeof(struct mtd_info) + sizeof(struct jedec_private)); priv = (struct jedec_private *)&MTD[1]; my_bank_size = map->size; diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index 1154dac715a..58e561e8769 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -154,6 +154,7 @@ #define SST39SF010A 0x00B5 #define SST39SF020A 0x00B6 #define SST49LF004B 0x0060 +#define SST49LF040B 0x0050 #define SST49LF008A 0x005a #define SST49LF030A 0x001C #define SST49LF040A 0x0051 @@ -1401,6 +1402,20 @@ static const struct amd_flash_info jedec_table[] = { } }, { .mfr_id = MANUFACTURER_SST, + .dev_id = SST49LF040B, + .name = "SST 49LF040B", + .uaddr = { + [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */ + }, + .DevSize = SIZE_512KiB, + .CmdSet = P_ID_AMD_STD, + .NumEraseRegions= 1, + .regions = { + ERASEINFO(0x01000,128), + } + }, { + + .mfr_id = MANUFACTURER_SST, .dev_id = SST49LF004B, .name = "SST 49LF004B", .uaddr = { @@ -1874,7 +1889,7 @@ static int cfi_jedec_setup(struct cfi_private *p_cfi, int index) /* - * There is a BIG problem properly ID'ing the JEDEC devic and guaranteeing + * There is a BIG problem properly ID'ing the JEDEC device and guaranteeing * the mapped address, unlock addresses, and proper chip ID. This function * attempts to minimize errors. It is doubtfull that this probe will ever * be perfect - consequently there should be some module parameters that diff --git a/drivers/mtd/chips/map_absent.c b/drivers/mtd/chips/map_absent.c index ac01a949b68..fc478c0f93f 100644 --- a/drivers/mtd/chips/map_absent.c +++ b/drivers/mtd/chips/map_absent.c @@ -47,13 +47,11 @@ static struct mtd_info *map_absent_probe(struct map_info *map) { struct mtd_info *mtd; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) { return NULL; } - memset(mtd, 0, sizeof(*mtd)); - map->fldrv = &map_absent_chipdrv; mtd->priv = map; mtd->name = map->name; diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index 3a66680abfd..5cb6d526366 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -55,12 +55,10 @@ static struct mtd_info *map_ram_probe(struct map_info *map) #endif /* OK. It seems to be RAM. */ - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) return NULL; - memset(mtd, 0, sizeof(*mtd)); - map->fldrv = &mapram_chipdrv; mtd->priv = map; mtd->name = map->name; diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c index 1b328b1378f..cb27f855074 100644 --- a/drivers/mtd/chips/map_rom.c +++ b/drivers/mtd/chips/map_rom.c @@ -31,12 +31,10 @@ static struct mtd_info *map_rom_probe(struct map_info *map) { struct mtd_info *mtd; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if (!mtd) return NULL; - memset(mtd, 0, sizeof(*mtd)); - map->fldrv = &maprom_chipdrv; mtd->priv = map; mtd->name = map->name; diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c index 967abbecdff..c9cd3d21ccf 100644 --- a/drivers/mtd/chips/sharp.c +++ b/drivers/mtd/chips/sharp.c @@ -112,18 +112,16 @@ static struct mtd_info *sharp_probe(struct map_info *map) struct sharp_info *sharp = NULL; int width; - mtd = kmalloc(sizeof(*mtd), GFP_KERNEL); + mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); if(!mtd) return NULL; - sharp = kmalloc(sizeof(*sharp), GFP_KERNEL); + sharp = kzalloc(sizeof(*sharp), GFP_KERNEL); if(!sharp) { kfree(mtd); return NULL; } - memset(mtd, 0, sizeof(*mtd)); - width = sharp_probe_map(map,mtd); if(!width){ kfree(mtd); @@ -143,7 +141,6 @@ static struct mtd_info *sharp_probe(struct map_info *map) mtd->writesize = 1; mtd->name = map->name; - memset(sharp, 0, sizeof(*sharp)); sharp->chipshift = 23; sharp->numchips = 1; sharp->chips[0].start = 0; diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c index a7a7bfe3387..23fab14f163 100644 --- a/drivers/mtd/cmdlinepart.c +++ b/drivers/mtd/cmdlinepart.c @@ -163,13 +163,12 @@ static struct mtd_partition * newpart(char *s, *num_parts = this_part + 1; alloc_size = *num_parts * sizeof(struct mtd_partition) + extra_mem_size; - parts = kmalloc(alloc_size, GFP_KERNEL); + parts = kzalloc(alloc_size, GFP_KERNEL); if (!parts) { printk(KERN_ERR ERRP "out of memory\n"); return NULL; } - memset(parts, 0, alloc_size); extra_mem = (unsigned char *)(parts + *num_parts); } /* enter this partition (offset will be calculated later if it is zero at this point) */ @@ -346,7 +345,7 @@ static int parse_cmdline_partitions(struct mtd_info *master, * * This function needs to be visible for bootloaders. */ -int mtdpart_setup(char *s) +static int mtdpart_setup(char *s) { cmdline = s; return 1; diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 401c6a294ba..6d917a4daa9 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -295,10 +295,9 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) if (!devname) return NULL; - dev = kmalloc(sizeof(struct block2mtd_dev), GFP_KERNEL); + dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL); if (!dev) return NULL; - memset(dev, 0, sizeof(*dev)); /* Get a handle on the device */ bdev = open_bdev_excl(devname, O_RDWR, NULL); diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c index 08dfb899b27..9cff119a202 100644 --- a/drivers/mtd/devices/ms02-nv.c +++ b/drivers/mtd/device |