diff options
Diffstat (limited to '')
144 files changed, 2849 insertions, 2236 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index eed06d068fd1..14f11f8b9e5f 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -1,5 +1,3 @@ -# $Id: Kconfig,v 1.11 2005/11/07 11:14:19 gleixner Exp $ - menuconfig MTD tristate "Memory Technology Device (MTD) support" depends on HAS_IOMEM diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c index 52d51eb91c16..d072ca5be689 100644 --- a/drivers/mtd/afs.c +++ b/drivers/mtd/afs.c @@ -21,8 +21,6 @@ This is access code for flashes using ARM's flash partitioning standards. - $Id: afs.c,v 1.15 2005/11/07 11:14:19 gleixner Exp $ - ======================================================================*/ #include <linux/module.h> diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index fcd1aeccdf93..5f1b472137a0 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -4,8 +4,6 @@ * * (C) 2000 Red Hat. GPL'd * - * $Id: cfi_cmdset_0001.c,v 1.186 2005/11/23 22:07:52 nico Exp $ - * * * 10/10/2000 Nicolas Pitre <nico@cam.org> * - completely revamped method functions so they are aware and @@ -50,6 +48,8 @@ #define I82802AC 0x00ac #define MANUFACTURER_ST 0x0020 #define M50LPW080 0x002F +#define M50FLW080A 0x0080 +#define M50FLW080B 0x0081 #define AT49BV640D 0x02de static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); @@ -204,7 +204,7 @@ static void fixup_intel_strataflash(struct mtd_info *mtd, void* param) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; - struct cfi_pri_amdstd *extp = cfi->cmdset_priv; + struct cfi_pri_intelext *extp = cfi->cmdset_priv; printk(KERN_WARNING "cfi_cmdset_0001: Suspend " "erase on write disabled.\n"); @@ -301,6 +301,8 @@ static struct cfi_fixup jedec_fixup_table[] = { { MANUFACTURER_INTEL, I82802AB, fixup_use_fwh_lock, NULL, }, { MANUFACTURER_INTEL, I82802AC, fixup_use_fwh_lock, NULL, }, { MANUFACTURER_ST, M50LPW080, fixup_use_fwh_lock, NULL, }, + { MANUFACTURER_ST, M50FLW080A, fixup_use_fwh_lock, NULL, }, + { MANUFACTURER_ST, M50FLW080B, fixup_use_fwh_lock, NULL, }, { 0, 0, NULL, NULL } }; static struct cfi_fixup fixup_table[] = { @@ -1147,7 +1149,7 @@ static int inval_cache_and_wait_for_operation( struct cfi_private *cfi = map->fldrv_priv; map_word status, status_OK = CMD(0x80); int chip_state = chip->state; - unsigned int timeo, sleep_time; + unsigned int timeo, sleep_time, reset_timeo; spin_unlock(chip->mutex); if (inval_len) @@ -1158,6 +1160,7 @@ static int inval_cache_and_wait_for_operation( timeo = chip_op_time * 8; if (!timeo) timeo = 500000; + reset_timeo = timeo; sleep_time = chip_op_time / 2; for (;;) { @@ -1199,6 +1202,12 @@ static int inval_cache_and_wait_for_operation( remove_wait_queue(&chip->wq, &wait); spin_lock(chip->mutex); } + if (chip->erase_suspended || chip->write_suspended) { + /* Suspend has occured while sleep: reset timeout */ + timeo = reset_timeo; + chip->erase_suspended = 0; + chip->write_suspended = 0; + } } /* Done and happy. */ diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index f7fcc6389533..a972cc6be436 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -16,9 +16,6 @@ * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com * * This code is GPL - * - * $Id: cfi_cmdset_0002.c,v 1.122 2005/11/07 11:14:22 gleixner Exp $ - * */ #include <linux/module.h> diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index 1b720cc571f3..d4714dd9f7ab 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -4,8 +4,6 @@ * * (C) 2000 Red Hat. GPL'd * - * $Id: cfi_cmdset_0020.c,v 1.22 2005/11/07 11:14:22 gleixner Exp $ - * * 10/10/2000 Nicolas Pitre <nico@cam.org> * - completely revamped method functions so they are aware and * independent of the flash geometry (buswidth, interleave, etc.) diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index a4463a91ce31..c418e92e1d92 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -1,7 +1,6 @@ /* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: cfi_probe.c,v 1.86 2005/11/29 14:48:31 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c index 72e0022a47bf..0ee457018016 100644 --- a/drivers/mtd/chips/cfi_util.c +++ b/drivers/mtd/chips/cfi_util.c @@ -6,9 +6,6 @@ * Copyright (C) 2003 STMicroelectronics Limited * * This code is covered by the GPL. - * - * $Id: cfi_util.c,v 1.10 2005/11/07 11:14:23 gleixner Exp $ - * */ #include <linux/module.h> diff --git a/drivers/mtd/chips/chipreg.c b/drivers/mtd/chips/chipreg.c index 2174c97549f0..c85760968227 100644 --- a/drivers/mtd/chips/chipreg.c +++ b/drivers/mtd/chips/chipreg.c @@ -1,6 +1,4 @@ /* - * $Id: chipreg.c,v 1.17 2004/11/16 18:29:00 dwmw2 Exp $ - * * Registration for chip drivers * */ diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c index d338b8c92780..f061885b2812 100644 --- a/drivers/mtd/chips/gen_probe.c +++ b/drivers/mtd/chips/gen_probe.c @@ -2,7 +2,6 @@ * Routines common to all CFI-type probes. * (C) 2001-2003 Red Hat, Inc. * GPL'd - * $Id: gen_probe.c,v 1.24 2005/11/07 11:14:23 gleixner Exp $ */ #include <linux/kernel.h> @@ -71,8 +70,8 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi interleave and device type, etc. */ if (!genprobe_new_chip(map, cp, &cfi)) { /* The probe didn't like it */ - printk(KERN_DEBUG "%s: Found no %s device at location zero\n", - cp->name, map->name); + pr_debug("%s: Found no %s device at location zero\n", + cp->name, map->name); return NULL; } diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index aa07575eb288..dbba5abf0db8 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -1,7 +1,6 @@ /* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: jedec_probe.c,v 1.66 2005/11/07 11:14:23 gleixner Exp $ See JEDEC (http://www.jedec.org/) standard JESD21C (section 3.5) for the standard this probe goes back to. @@ -26,6 +25,7 @@ /* Manufacturers */ #define MANUFACTURER_AMD 0x0001 #define MANUFACTURER_ATMEL 0x001f +#define MANUFACTURER_EON 0x001c #define MANUFACTURER_FUJITSU 0x0004 #define MANUFACTURER_HYUNDAI 0x00AD #define MANUFACTURER_INTEL 0x0089 @@ -37,6 +37,7 @@ #define MANUFACTURER_ST 0x0020 #define MANUFACTURER_TOSHIBA 0x0098 #define MANUFACTURER_WINBOND 0x00da +#define CONTINUATION_CODE 0x007f /* AMD */ @@ -58,6 +59,8 @@ #define AM29LV040B 0x004F #define AM29F032B 0x0041 #define AM29F002T 0x00B0 +#define AM29SL800DB 0x226B +#define AM29SL800DT 0x22EA /* Atmel */ #define AT49BV512 0x0003 @@ -67,6 +70,10 @@ #define AT49BV32X 0x00C8 #define AT49BV32XT 0x00C9 +/* Eon */ +#define EN29SL800BB 0x226B +#define EN29SL800BT 0x22EA + /* Fujitsu */ #define MBM29F040C 0x00A4 #define MBM29F800BA 0x2258 @@ -141,6 +148,8 @@ #define M50FW080 0x002D #define M50FW016 0x002E #define M50LPW080 0x002F +#define M50FLW080A 0x0080 +#define M50FLW080B 0x0081 /* SST */ #define SST29EE020 0x0010 @@ -191,6 +200,7 @@ enum uaddr { MTD_UADDR_0x0555_0x0AAA, MTD_UADDR_0x5555_0x2AAA, MTD_UADDR_0x0AAA_0x0555, + MTD_UADDR_0xAAAA_0x5555, MTD_UADDR_DONT_CARE, /* Requires an arbitrary address */ MTD_UADDR_UNNECESSARY, /* Does not require any address */ }; @@ -238,6 +248,11 @@ static const struct unlock_addr unlock_addrs[] = { .addr2 = 0x0555 }, + [MTD_UADDR_0xAAAA_0x5555] = { + .addr1 = 0xaaaa, + .addr2 = 0x5555 + }, + [MTD_UADDR_DONT_CARE] = { .addr1 = 0x0000, /* Doesn't matter which address */ .addr2 = 0x0000 /* is used - must be last entry */ @@ -522,6 +537,36 @@ static const struct amd_flash_info jedec_table[] = { ERASEINFO(0x04000,1), } }, { + .mfr_id = MANUFACTURER_AMD, + .dev_id = AM29SL800DT, + .name = "AMD AM29SL800DT", + .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_0x0AAA_0x0555, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_AMD_STD, + .nr_regions = 4, + .regions = { + ERASEINFO(0x10000,15), + ERASEINFO(0x08000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x04000,1), + } + }, { + .mfr_id = MANUFACTURER_AMD, + .dev_id = AM29SL800DB, + .name = "AMD AM29SL800DB", + .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_0x0AAA_0x0555, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_AMD_STD, + .nr_regions = 4, + .regions = { + ERASEINFO(0x04000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x08000,1), + ERASEINFO(0x10000,15), + } + }, { .mfr_id = MANUFACTURER_ATMEL, .dev_id = AT49BV512, .name = "Atmel AT49BV512", @@ -599,6 +644,36 @@ static const struct amd_flash_info jedec_table[] = { ERASEINFO(0x02000,8) } }, { + .mfr_id = MANUFACTURER_EON, + .dev_id = EN29SL800BT, + .name = "Eon EN29SL800BT", + .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_0x0AAA_0x0555, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_AMD_STD, + .nr_regions = 4, + .regions = { + ERASEINFO(0x10000,15), + ERASEINFO(0x08000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x04000,1), + } + }, { + .mfr_id = MANUFACTURER_EON, + .dev_id = EN29SL800BB, + .name = "Eon EN29SL800BB", + .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_0x0AAA_0x0555, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_AMD_STD, + .nr_regions = 4, + .regions = { + ERASEINFO(0x04000,1), + ERASEINFO(0x02000,2), + ERASEINFO(0x08000,1), + ERASEINFO(0x10000,15), + } + }, { .mfr_id = MANUFACTURER_FUJITSU, .dev_id = MBM29F040C, .name = "Fujitsu MBM29F040C", @@ -1392,8 +1467,8 @@ static const struct amd_flash_info jedec_table[] = { .mfr_id = MANUFACTURER_SST, /* should be CFI */ .dev_id = SST39LF160, .name = "SST 39LF160", - .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, - .uaddr = MTD_UADDR_0x5555_0x2AAA, /* ???? */ + .devtypes = CFI_DEVICETYPE_X16, + .uaddr = MTD_UADDR_0xAAAA_0x5555, .dev_size = SIZE_2MiB, .cmd_set = P_ID_AMD_STD, .nr_regions = 2, @@ -1405,8 +1480,8 @@ static const struct amd_flash_info jedec_table[] = { .mfr_id = MANUFACTURER_SST, /* should be CFI */ .dev_id = SST39VF1601, .name = "SST 39VF1601", - .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, - .uaddr = MTD_UADDR_0x5555_0x2AAA, /* ???? */ + .devtypes = CFI_DEVICETYPE_X16, + .uaddr = MTD_UADDR_0xAAAA_0x5555, .dev_size = SIZE_2MiB, .cmd_set = P_ID_AMD_STD, .nr_regions = 2, @@ -1590,6 +1665,36 @@ static const struct amd_flash_info jedec_table[] = { .nr_regions = 1, .regions = { ERASEINFO(0x10000,16), + }, + }, { + .mfr_id = MANUFACTURER_ST, + .dev_id = M50FLW080A, + .name = "ST M50FLW080A", + .devtypes = CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_UNNECESSARY, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_INTEL_EXT, + .nr_regions = 4, + .regions = { + ERASEINFO(0x1000,16), + ERASEINFO(0x10000,13), + ERASEINFO(0x1000,16), + ERASEINFO(0x1000,16), + } + }, { + .mfr_id = MANUFACTURER_ST, + .dev_id = M50FLW080B, + .name = "ST M50FLW080B", + .devtypes = CFI_DEVICETYPE_X8, + .uaddr = MTD_UADDR_UNNECESSARY, + .dev_size = SIZE_1MiB, + .cmd_set = P_ID_INTEL_EXT, + .nr_regions = 4, + .regions = { + ERASEINFO(0x1000,16), + ERASEINFO(0x1000,16), + ERASEINFO(0x10000,13), + ERASEINFO(0x1000,16), } }, { .mfr_id = MANUFACTURER_TOSHIBA, @@ -1696,9 +1801,21 @@ static inline u32 jedec_read_mfr(struct map_info *map, uint32_t base, { map_word result; unsigned long mask; - u32 ofs = cfi_build_cmd_addr(0, cfi_interleave(cfi), cfi->device_type); - mask = (1 << (cfi->device_type * 8)) -1; - result = map_read(map, base + ofs); + int bank = 0; + + /* According to JEDEC "Standard Manufacturer's Identification Code" + * (http://www.jedec.org/download/search/jep106W.pdf) + * several first banks can contain 0x7f instead of actual ID + */ + do { + uint32_t ofs = cfi_build_cmd_addr(0 + (bank << 8), + cfi_interleave(cfi), + cfi->device_type); + mask = (1 << (cfi->device_type * 8)) - 1; + result = map_read(map, base + ofs); + bank++; + } while ((result.x[0] & mask) == CONTINUATION_CODE); + return result.x[0] & mask; } diff --git a/drivers/mtd/chips/map_absent.c b/drivers/mtd/chips/map_absent.c index fc478c0f93f5..494d30d0631a 100644 --- a/drivers/mtd/chips/map_absent.c +++ b/drivers/mtd/chips/map_absent.c @@ -1,7 +1,6 @@ /* * Common code to handle absent "placeholder" devices * Copyright 2001 Resilience Corporation <ebrower@resilience.com> - * $Id: map_absent.c,v 1.6 2005/11/07 11:14:23 gleixner Exp $ * * This map driver is used to allocate "placeholder" MTD * devices on systems that have socketed/removable media. diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index 5cb6d5263661..072dd8abf33a 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -1,7 +1,6 @@ /* * Common code to handle map devices which are simple RAM * (C) 2000 Red Hat. GPL'd. - * $Id: map_ram.c,v 1.22 2005/01/05 18:05:12 dwmw2 Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c index cb27f855074c..821d0ed6bae3 100644 --- a/drivers/mtd/chips/map_rom.c +++ b/drivers/mtd/chips/map_rom.c @@ -1,7 +1,6 @@ /* * Common code to handle map devices which are simple ROM * (C) 2000 Red Hat. GPL'd. - * $Id: map_rom.c,v 1.23 2005/01/05 18:05:12 dwmw2 Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c index e472a0e9de9d..71bc07f149b7 100644 --- a/drivers/mtd/cmdlinepart.c +++ b/drivers/mtd/cmdlinepart.c @@ -1,6 +1,4 @@ /* - * $Id: cmdlinepart.c,v 1.19 2005/11/07 11:14:19 gleixner Exp $ - * * Read flash partition table from command line * * Copyright 2002 SYSGO Real-Time Solutions GmbH @@ -308,7 +306,7 @@ static int parse_cmdline_partitions(struct mtd_info *master, unsigned long offset; int i; struct cmdline_mtd_partition *part; - char *mtd_id = master->name; + const char *mtd_id = master->name; /* parse command line */ if (!cmdline_parsed) diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index 35ed1103dbb2..9c613f06623c 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -1,5 +1,4 @@ # drivers/mtd/maps/Kconfig -# $Id: Kconfig,v 1.18 2005/11/07 11:14:24 gleixner Exp $ menu "Self-contained MTD device drivers" depends on MTD!=n diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile index 0f788d5c4bf8..0993d5cf3923 100644 --- a/drivers/mtd/devices/Makefile +++ b/drivers/mtd/devices/Makefile @@ -1,7 +1,6 @@ # # linux/drivers/devices/Makefile # -# $Id: Makefile.common,v 1.7 2004/12/22 17:51:15 joern Exp $ obj-$(CONFIG_MTD_DOC2000) += doc2000.o obj-$(CONFIG_MTD_DOC2001) += doc2001.o diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 519d942e7940..91fbba767635 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -1,6 +1,4 @@ /* - * $Id: block2mtd.c,v 1.30 2005/11/29 14:48:32 gleixner Exp $ - * * block2mtd.c - create an mtd from a block device * * Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk> @@ -20,9 +18,6 @@ #include <linux/mutex.h> #include <linux/mount.h> -#define VERSION "$Revision: 1.30 $" - - #define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args) #define INFO(fmt, args...) printk(KERN_INFO "block2mtd: " fmt "\n" , ## args) @@ -241,6 +236,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) { struct block_device *bdev; struct block2mtd_dev *dev; + char *name; if (!devname) return NULL; @@ -279,12 +275,13 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) /* Setup the MTD structure */ /* make the name contain the block device in */ - dev->mtd.name = kmalloc(sizeof("block2mtd: ") + strlen(devname), + name = kmalloc(sizeof("block2mtd: ") + strlen(devname) + 1, GFP_KERNEL); - if (!dev->mtd.name) + if (!name) goto devinit_err; - sprintf(dev->mtd.name, "block2mtd: %s", devname); + sprintf(name, "block2mtd: %s", devname); + dev->mtd.name = name; dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK; dev->mtd.erasesize = erase_size; @@ -451,7 +448,6 @@ MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\""); static int __init block2mtd_init(void) { int ret = 0; - INFO("version " VERSION); #ifndef MODULE if (strlen(block2mtd_paramline)) diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index 846989f292e3..50de839c77a9 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -3,8 +3,6 @@ * Linux driver for Disk-On-Chip 2000 and Millennium * (c) 1999 Machine Vision Holdings, Inc. * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org> - * - * $Id: doc2000.c,v 1.67 2005/11/07 11:14:24 gleixner Exp $ */ #include <linux/kernel.h> diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c index 6413efc045e0..e32c568c1145 100644 --- a/drivers/mtd/devices/doc2001.c +++ b/drivers/mtd/devices/doc2001.c @@ -3,8 +3,6 @@ * Linux driver for Disk-On-Chip Millennium * (c) 1999 Machine Vision Holdings, Inc. * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org> - * - * $Id: doc2001.c,v 1.49 2005/11/07 11:14:24 gleixner Exp $ */ #include <linux/kernel.h> diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c index 83be3461658f..d853f891b586 100644 --- a/drivers/mtd/devices/doc2001plus.c +++ b/drivers/mtd/devices/doc2001plus.c @@ -6,8 +6,6 @@ * (c) 1999 Machine Vision Holdings, Inc. * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org> * - * $Id: doc2001plus.c,v 1.14 2005/11/07 11:14:24 gleixner Exp $ - * * Released under GPL */ diff --git a/drivers/mtd/devices/docecc.c b/drivers/mtd/devices/docecc.c index fd8a8daba3a8..874e51b110a2 100644 --- a/drivers/mtd/devices/docecc.c +++ b/drivers/mtd/devices/docecc.c @@ -7,8 +7,6 @@ * Author: Fabrice Bellard (fabrice.bellard@netgem.com) * Copyright (C) 2000 Netgem S.A. * - * $Id: docecc.c,v 1.7 2005/11/07 11:14:25 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/drivers/mtd/devices/docprobe.c b/drivers/mtd/devices/docprobe.c index d8cc94ec4e50..6e62922942b1 100644 --- a/drivers/mtd/devices/docprobe.c +++ b/drivers/mtd/devices/docprobe.c @@ -4,9 +4,6 @@ /* (C) 1999 Machine Vision Holdings, Inc. */ /* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> */ -/* $Id: docprobe.c,v 1.46 2005/11/07 11:14:25 gleixner Exp $ */ - - /* DOC_PASSIVE_PROBE: In order to ensure that the BIOS checksum is correct at boot time, and @@ -79,8 +76,6 @@ static unsigned long __initdata doc_locations[] = { 0xe0000, 0xe2000, 0xe4000, 0xe6000, 0xe8000, 0xea000, 0xec000, 0xee000, #endif /* CONFIG_MTD_DOCPROBE_HIGH */ -#elif defined(__PPC__) - 0xe4000000, #else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c index 1d324e5c412d..f4bda4cee495 100644 --- a/drivers/mtd/devices/lart.c +++ b/drivers/mtd/devices/lart.c @@ -2,8 +2,6 @@ /* * MTD driver for the 28F160F3 Flash Memory (non-CFI) on LART. * - * $Id: lart.c,v 1.9 2005/11/07 11:14:25 gleixner Exp $ - * * Author: Abraham vd Merwe <abraham@2d3d.co.za> * * Copyright (c) 2001, 2d3D, Inc. diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index b402269301f6..b35c3333e210 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -33,6 +33,7 @@ /* Flash opcodes. */ #define OPCODE_WREN 0x06 /* Write enable */ #define OPCODE_RDSR 0x05 /* Read status register */ +#define OPCODE_WRSR 0x01 /* Write status register 1 byte */ #define OPCODE_NORM_READ 0x03 /* Read data bytes (low frequency) */ #define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */ #define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */ @@ -112,6 +113,17 @@ static int read_sr(struct m25p *flash) return val; } +/* + * Write status register 1 byte + * Returns negative if error occurred. + */ +static int write_sr(struct m25p *flash, u8 val) +{ + flash->command[0] = OPCODE_WRSR; + flash->command[1] = val; + + return spi_write(flash->spi, flash->command, 2); +} /* * Set write enable latch with Write Enable command. @@ -589,6 +601,16 @@ static int __devinit m25p_probe(struct spi_device *spi) mutex_init(&flash->lock); dev_set_drvdata(&spi->dev, flash); + /* + * Atmel serial flash tend to power up + * with the software protection bits set + */ + + if (info->jedec_id >> 16 == 0x1f) { + write_enable(flash); + write_sr(flash, 0); + } + if (data && data->name) flash->mtd.name = data->name; else diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c index 9cff119a2024..6a9a24a80a6d 100644 --- a/drivers/mtd/devices/ms02-nv.c +++ b/drivers/mtd/devices/ms02-nv.c @@ -5,8 +5,6 @@ * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. - * - * $Id: ms02-nv.c,v 1.11 2005/11/14 13:41:47 macro Exp $ */ #include <linux/init.h> diff --git a/drivers/mtd/devices/ms02-nv.h b/drivers/mtd/devices/ms02-nv.h index 8a6eef7cfee3..04deafd3a771 100644 --- a/drivers/mtd/devices/ms02-nv.h +++ b/drivers/mtd/devices/ms02-nv.h @@ -9,8 +9,6 @@ * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. - * - * $Id: ms02-nv.h,v 1.3 2003/08/19 09:25:36 dwmw2 Exp $ */ #include <linux/ioport.h> diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index b35e4813a3a5..54e36bfc2c3b 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -82,7 +82,7 @@ struct dataflash { - u8 command[4]; + uint8_t command[4]; char name[24]; unsigned partitioned:1; @@ -150,7 +150,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) struct spi_transfer x = { .tx_dma = 0, }; struct spi_message msg; unsigned blocksize = priv->page_size << 3; - u8 *command; + uint8_t *command; DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n", spi->dev.bus_id, @@ -182,8 +182,8 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) pageaddr = pageaddr << priv->page_offset; command[0] = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE; - command[1] = (u8)(pageaddr >> 16); - command[2] = (u8)(pageaddr >> 8); + command[1] = (uint8_t)(pageaddr >> 16); + command[2] = (uint8_t)(pageaddr >> 8); command[3] = 0; DEBUG(MTD_DEBUG_LEVEL3, "ERASE %s: (%x) %x %x %x [%i]\n", @@ -234,7 +234,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, struct spi_transfer x[2] = { { .tx_dma = 0, }, }; struct spi_message msg; unsigned int addr; - u8 *command; + uint8_t *command; int status; DEBUG(MTD_DEBUG_LEVEL2, "%s: read 0x%x..0x%x\n", @@ -274,9 +274,9 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, * fewer "don't care" bytes. Both buffers stay unchanged. */ command[0] = OP_READ_CONTINUOUS; - command[1] = (u8)(addr >> 16); - command[2] = (u8)(addr >> 8); - command[3] = (u8)(addr >> 0); + command[1] = (uint8_t)(addr >> 16); + command[2] = (uint8_t)(addr >> 8); + command[3] = (uint8_t)(addr >> 0); /* plus 4 "don't care" bytes */ status = spi_sync(priv->spi, &msg); @@ -311,7 +311,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, size_t remaining = len; u_char *writebuf = (u_char *) buf; int status = -EINVAL; - u8 *command; + uint8_t *command; DEBUG(MTD_DEBUG_LEVEL2, "%s: write 0x%x..0x%x\n", spi->dev.bus_id, (unsigned)to, (unsigned)(to + len)); @@ -487,7 +487,9 @@ add_dataflash(struct spi_device *spi, char *name, device->write = dataflash_write; device->priv = priv; - dev_info(&spi->dev, "%s (%d KBytes)\n", name, device->size/1024); + dev_info(&spi->dev, "%s (%d KBytes) pagesize %d bytes, " + "erasesize %d bytes\n", name, device->size/1024, + pagesize, pagesize * 8); /* 8 pages = 1 block */ dev_set_drvdata(&spi->dev, priv); if (mtd_has_partitions()) { @@ -521,7 +523,7 @@ add_dataflash(struct spi_device *spi, char *name, * * Device Density ID code #Pages PageSize Offset * AT45DB011B 1Mbit (128K) xx0011xx (0x0c) 512 264 9 - * AT45DB021B 2Mbit (256K) xx0101xx (0x14) 1025 264 9 + * AT45DB021B 2Mbit (256K) xx0101xx (0x14) 1024 264 9 * AT45DB041B 4Mbit (512K) xx0111xx (0x1c) 2048 264 9 * AT45DB081B 8Mbit (1M) xx1001xx (0x24) 4096 264 9 * AT45DB0161B 16Mbit (2M) xx1011xx (0x2c) 4096 528 10 @@ -529,9 +531,114 @@ add_dataflash(struct spi_device *spi, char *name, * AT45DB0642 64Mbit (8M) xx111xxx (0x3c) 8192 1056 11 * AT45DB1282 128Mbit (16M) xx0100xx (0x10) 16384 1056 11 */ + +struct flash_info { + char *name; + + /* JEDEC id zero means "no ID" (most older chips); otherwise it has + * a high byte of zero plus three data bytes: the manufacturer id, + * then a two byte device id. + */ + uint32_t jedec_id; + + /* The size listed here is what works with OPCODE_SE, which isn't + * necessarily called a "sector" by the vendor. + */ + unsigned nr_pages; + uint16_t pagesize; + uint16_t pageoffset; + + uint16_t flags; +#define SUP_POW2PS 0x02 +#define IS_POW2PS 0x01 +}; + +static struct flash_info __devinitdata dataflash_data [] = { + + { "at45db011d", 0x1f2200, 512, 264, 9, SUP_POW2PS}, + { "at45db011d", 0x1f2200, 512, 256, 8, SUP_POW2PS | IS_POW2PS}, + + { "at45db021d", 0x1f2300, 1024, 264, 9, SUP_POW2PS}, + { "at45db021d", 0x1f2300, 1024, 256, 8, SUP_POW2PS | IS_POW2PS}, + + { "at45db041d", 0x1f2400, 2048, 264, 9, SUP_POW2PS}, + { "at45db041d", 0x1f2400, 2048, 256, 8, SUP_POW2PS | IS_POW2PS}, + + { "at45db081d", 0x1f2500, 4096, 264, 9, SUP_POW2PS}, + { "at45db081d", 0x1f2500, 4096, 256, 8, SUP_POW2PS | IS_POW2PS}, + + { "at45db161d", 0x1f2600, 4096, 528, 10, SUP_POW2PS}, + { "at45db161d", 0x1f2600, 4096, 512, 9, SUP_POW2PS | IS_POW2PS}, + + { "at45db321c", 0x1f2700, 8192, 528, 10, }, + + { "at45db321d", 0x1f2701, 8192, 528, 10, SUP_POW2PS}, + { "at45db321d", 0x1f2701, 8192, 512, 9, SUP_POW2PS | IS_POW2PS}, + + { "at45db641d", 0x1f2800, 8192, 1056, 11, SUP_POW2PS}, + { "at45db641d", 0x1f2800, 8192, 1024, 10, SUP_POW2PS | IS_POW2PS}, +}; + +static struct flash_info *__devinit jedec_probe(struct spi_device *spi) +{ + int tmp; + uint8_t code = OP_READ_ID; + uint8_t id[3]; + uint32_t jedec; + struct flash_info *info; + int status; + + + /* JEDEC also defines an optional "extended device information" + * string for after vendor-specific data, after the three bytes + * we use here. Supporting some chips might require using it. + */ + tmp = spi_write_then_read(spi, &code, 1, id, 3); + if (tmp < 0) { + DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n", + spi->dev.bus_id, tmp); + return NULL; + } + jedec = id[0]; + jedec = jedec << 8; + jedec |= id[1]; + jedec = jedec << 8; + jedec |= id[2]; + + for (tmp = 0, info = dataflash_data; + tmp < ARRAY_SIZE(dataflash_data); + tmp++, info++) { + if (info->jedec_id == jedec) { + if (info->flags & SUP_POW2PS) { + status = dataflash_status(spi); + if (status & 0x1) + /* return power of 2 pagesize */ + return ++info; + else + return info; + } + } + } + return NULL; +} + static int __devinit dataflash_probe(struct spi_device *spi) { int status; + struct flash_info *info; + + /* + * Try to detect dataflash by JEDEC ID. + * If it succeeds we know we have either a C or D part. + * D will support power of 2 pagesize option. + */ + + info = jedec_probe(spi); + + if (info != NULL) + return add_dataflash(spi, info->name, info->nr_pages, + info->pagesize, info->pageoffset); + status = dataflash_status(spi); if (status <= 0 || status == 0xff) { @@ -551,16 +658,16 @@ static int __devinit dataflash_probe(struct spi_device *spi) status = add_dataflash(spi, "AT45DB011B", 512, 264, 9); break; case 0x14: /* 0 1 0 1 x x */ - status = add_dataflash(spi, "AT45DB021B", 1025, 264, 9); + status = add_dataflash(spi, "AT45DB021B", 1024, 264, 9); break; case 0x1c: /* 0 1 1 1 x x */ - status = add_dataflash(spi, "AT45DB041x", 2048, 264, 9); + status = add_dataflash(spi, "AT45DB041B", 2048, 264, 9); break; case 0x24: /* 1 0 0 1 x x */ status = add_dataflash(spi, "AT45DB081B", 4096, 264, 9); break; case 0x2c: /* 1 0 1 1 x x */ - status = add_dataflash(spi, "AT45DB161x", 4096, 528, 10); + status = add_dataflash(spi, "AT45DB161B", 4096, 528, 10); break; case 0x34: /* 1 1 0 1 x x */ status = add_dataflash(spi, "AT45DB321x", 8192, 528, 10); diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index 0399be178620..3aaca88847d3 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -1,6 +1,5 @@ /* * mtdram - a test mtd device - * $Id: mtdram.c,v 1.37 2005/04/21 03:42:11 joern Exp $ * Author: Alexander Larsson <alex@cendio.se> * * Copyright (c) 1999 Alexander Larsson <alex@cendio.se> diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index c7987b1c5e01..088fbb7595b5 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -1,6 +1,4 @@ /** - * $Id: phram.c,v 1.16 2005/11/07 11:14:25 gleixner Exp $ - * * Copyright (c) ???? Jochen Schäuble <psionic@psionic.de> * Copyright (c) 2003-2004 Joern Engel <joern@wh.fh-wedel.de> * diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c index bc9981749064..d38bca64bb15 100644 --- a/drivers/mtd/devices/pmc551.c +++ b/drivers/mtd/devices/pmc551.c @@ -1,6 +1,4 @@ /* - * $Id: pmc551.c,v 1.32 2005/11/07 11:14:25 gleixner Exp $ - * * PMC551 PCI Mezzanine Ram Device * * Author: diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index cb86db746f28..a425d09f35a0 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -1,7 +1,5 @@ /*====================================================================== - $Id: slram.c,v 1.36 2005/11/07 11:14:25 gleixner Exp $ - This driver provides a method to access memory not used by the kernel itself (i.e. if the kernel commandline mem=xxx is used). To actually use slram at least mtdblock or mtdchar is required (for block or diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index 4a79b187b568..f34f20c78911 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -1,5 +1,4 @@ /* This version ported to the Linux-MTD system by dwmw2@infradead.org - * $Id: ftl.c,v 1.59 2005/11/29 14:48:31 gleixner Exp $ * * Fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br> * - fixes some leaks on failure in build_maps and ftl_notify_add, cleanups @@ -130,10 +129,6 @@ typedef struct partition_t { u_int16_t DataUnits; u_int32_t BlocksPerUnit; erase_unit_header_t header; -#if 0 - region_info_t region; - memory_handle_t handle; -#endif } partition_t; /* Partition state flags */ @@ -1082,8 +1077,6 @@ static struct mtd_blktrans_ops ftl_tr = { static int init_ftl(void) { - DEBUG(0, "$Id: ftl.c,v 1.59 2005/11/29 14:48:31 gleixner Exp $\n"); - return register_mtd_blktrans(&ftl_tr); } diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index b0e396504e67..c4f9d3378b24 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -7,8 +7,6 @@ * (c) 1999 Machine Vision Holdings, Inc. * Author: David Woodhouse <dwmw2@infradead.org> * - * $Id: inftlcore.c,v 1.19 2005/11/07 11:14:20 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -953,9 +951,6 @@ static struct mtd_blktrans_ops inftl_tr = { static int __init init_inftl(void) { - printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.19 $, " - "inftlmount.c %s\n", inftlmountrev); - return register_mtd_blktrans(&inftl_tr); } diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index c551d2f0779c..9113628ed1ef 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -8,8 +8,6 @@ * Author: Fabrice Bellard (fabrice.bellard@netgem.com) * Copyright (C) 2000 Netgem S.A. * - * $Id: inftlmount.c,v 1.18 2005/11/07 11:14:20 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -39,8 +37,6 @@ #include <linux/mtd/inftl.h> #include <linux/mtd/compatmac.h> -char inftlmountrev[]="$Revision: 1.18 $"; - /* * find_boot_record: Find the INFTL Media Header and its Spare copy which * contains the various device information of the INFTL partition and diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 17bc87a43ff4..df8e00bba07b 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -1,5 +1,4 @@ # drivers/mtd/maps/Kconfig -# $Id: Kconfig,v 1.61 2005/11/07 11:14:26 gleixner Exp $ menu "Mapping drivers for chip access" depends on MTD!=n @@ -258,13 +257,6 @@ config MTD_ALCHEMY help Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards -config MTD_MTX1 - tristate "4G Systems MTX-1 Flash device" - depends on MIPS_MTX1 && MTD_CFI - help - Flash memory access on 4G Systems MTX-1 Board. If you have one of - these boards and would like to use the flash chips on it, say 'Y'. - config MTD_DILNETPC tristate "CFI Flash device mapped on DIL/Net PC" depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT @@ -517,6 +509,17 @@ config MTD_PCMCIA_ANONYMOUS If unsure, say N. +config MTD_BFIN_ASYNC + tristate "Blackfin BF533-STAMP Flash Chip Support" + depends on BFIN533_STAMP && MTD_CFI + select MTD_PARTITIONS + default y + help + Map driver which allows for simultaneous utilization of + ethernet and CFI parallel flash. + + If compiled as a module, it will be called bfin-async-flash. + config MTD_UCLINUX tristate "Generic uClinux RAM/ROM filesystem support" depends on MTD_PARTITIONS && !MMU @@ -546,24 +549,6 @@ config MTD_DMV182 help Map driver for Dy-4 SVME/DMV-182 board. -config MTD_BAST - tristate "Map driver for Simtec BAST (EB2410ITX) or Thorcom VR1000" - depends on ARCH_BAST || MACH_VR1000 - select MTD_PARTITIONS - select MTD_MAP_BANK_WIDTH_16 - select MTD_JEDECPROBE - help - Map driver for NOR flash on the Simtec BAST (EB2410ITX), or the - Thorcom VR1000 - - Note, this driver *cannot* over-ride the WP link on the - board, or currently detect the state of the link. - -config MTD_BAST_MAXSIZE - int "Maximum size for BAST flash area (MiB)" - depends on MTD_BAST - default "4" - config MTD_SHARP_SL tristate "ROM mapped on Sharp SL Series" depends on ARCH_PXA diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index 957fb5f70f5e..6cda6df973e5 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -1,7 +1,6 @@ # # linux/drivers/maps/Makefile # -# $Id: Makefile.common,v 1.34 2005/11/07 11:14:26 gleixner Exp $ ifeq ($(CONFIG_MTD_COMPLEX_MAPPINGS),y) obj-$(CONFIG_MTD) += map_funcs.o @@ -10,7 +9,6 @@ endif # Chip mappings obj-$(CONFIG_MTD_CDB89712) += cdb89712.o obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o -obj-$(CONFIG_MTD_BAST) += bast-flash.o obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o obj-$(CONFIG_MTD_DC21285) += dc21285.o obj-$(CONFIG_MTD_DILNETPC) += dilnetpc.o @@ -65,5 +63,5 @@ obj-$(CONFIG_MTD_DMV182) += dmv182.o obj-$(CONFIG_MTD_SHARP_SL) += sharpsl-flash.o obj-$(CONFIG_MTD_PLATRAM) += plat-ram.o obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o -obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o obj-$(CONFIG_MTD_INTEL_VR_NOR) += intel_vr_nor.o +obj-$(CONFIG_MTD_BFIN_ASYNC) += bfin-async-flash.o diff --git a/drivers/mtd/maps/amd76xrom.c b/drivers/mtd/maps/amd76xrom.c index 728aed6ad722..948b86f35ef4 100644 --- a/drivers/mtd/maps/amd76xrom.c +++ b/drivers/mtd/maps/amd76xrom.c @@ -2,7 +2,6 @@ * amd76xrom.c * * Normal mappings of chips in physical memory - * $Id: amd76xrom.c,v 1.21 2005/11/07 11:14:26 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/autcpu12-nvram.c b/drivers/mtd/maps/autcpu12-nvram.c index 7ed3424dd959..cf32267263df 100644 --- a/drivers/mtd/maps/autcpu12-nvram.c +++ b/drivers/mtd/maps/autcpu12-nvram.c @@ -2,8 +2,6 @@ * NV-RAM memory access on autcpu12 * (C) 2002 Thomas Gleixner (gleixner@autronix.de) * - * $Id: autcpu12-nvram.c,v 1.9 2005/11/07 11:14:26 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/drivers/mtd/maps/bast-flash.c b/drivers/mtd/maps/bast-flash.c deleted file mode 100644 index 1f492062f8ca..000000000000 --- a/drivers/mtd/maps/bast-flash.c +++ /dev/null @@ -1,226 +0,0 @@ -/* linux/drivers/mtd/maps/bast-flash.c - * - * Copyright (c) 2004-2005 Simtec Electronics - * Ben Dooks <ben@simtec.co.uk> - * - * Simtec Bast (EB2410ITX) NOR MTD Mapping driver - * - * Changelog: - * 20-Sep-2004 BJD Initial version - * 17-Jan-2005 BJD Add whole device if no partitions found - * - * $Id: bast-flash.c,v 1.5 2005/11/07 11:14:26 gleixner Exp $ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/ioport.h> -#include <linux/device.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> -#include <asm/mach/flash.h> - -#include <asm/arch/map.h> -#include <asm/arch/bast-map.h> -#include <asm/arch/bast-cpld.h> - -#ifdef CONFIG_MTD_BAST_MAXSIZE -#define AREA_MAXSIZE (CONFIG_MTD_BAST_MAXSIZE * SZ_1M) -#else -#define AREA_MAXSIZE (32 * SZ_1M) -#endif - -#define PFX "bast-flash: " - -struct bast_flash_info { - struct mtd_info *mtd; - struct map_info map; - struct mtd_partition *partitions; - struct resource *area; -}; - -static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; - -static void bast_flash_setrw(int to) -{ - unsigned int val; - unsigned long flags; - - local_irq_save(flags); - val = __raw_readb(BAST_VA_CTRL3); - - if (to) - val |= BAST_CPLD_CTRL3_ROMWEN; - else - val &= ~BAST_CPLD_CTRL3_ROMWEN; - - pr_debug("new cpld ctrl3=%02x\n", val); - - __raw_writeb(val, BAST_VA_CTRL3); - local_irq_restore(flags); -} - -static int bast_flash_remove(struct platform_device *pdev) -{ - struct bast_flash_info *info = platform_get_drvdata(pdev); - - platform_set_drvdata(pdev, NULL); - - if (info == NULL) - return 0; - - if (info->map.virt != NULL) - iounmap(info->map.virt); - - if (info->mtd) { - del_mtd_partitions(info->mtd); - map_destroy(info->mtd); - } - - kfree(info->partitions); - - if (info->area) { - release_resource(info->area); - kfree(info->area); - } - - kfree(info); - - return 0; -} - -static int bast_flash_probe(struct platform_device *pdev) -{ - struct bast_flash_info *info; - struct resource *res; - int err = 0; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (info == NULL) { - printk(KERN_ERR PFX "no memory for flash info\n"); - err = -ENOMEM; - goto exit_error; - } - - memzero(info, sizeof(*info)); - platform_set_drvdata(pdev, info); - - res = pdev->resource; /* assume that the flash has one resource */ - - info->map.phys = res->start; - info->map.size = res->end - res->start + 1; - info->map.name = pdev->dev.bus_id; - info->map.bankwidth = 2; - - if (info->map.size > AREA_MAXSIZE) - info->map.size = AREA_MAXSIZE; - - pr_debug("%s: area %08lx, size %ld\n", __func__, - info->map.phys, info->map.size); - - info->area = request_mem_region(res->start, info->map.size, - pdev->name); - if (info->area == NULL) { - printk(KERN_ERR PFX "cannot reserve flash memory region\n"); - err = -ENOENT; - goto exit_error; - } - - info->map.virt = ioremap(res->start, info->map.size); - pr_debug("%s: virt at %08x\n", __func__, (int)info->map.virt); - - if (info->map.virt == 0) { - printk(KERN_ERR PFX "failed to ioremap() region\n"); - err = -EIO; - goto exit_error; - } - - simple_map_init(&info->map); - - /* enable the write to the flash area */ - - bast_flash_setrw(1); - - /* probe for the device(s) */ - - info->mtd = do_map_probe("jedec_probe", &info->map); - if (info->mtd == NULL) - info->mtd = do_map_probe("cfi_probe", &info->map); - - if (info->mtd == NULL) { - printk(KERN_ERR PFX "map_probe() failed\n"); - err = -ENXIO; - goto exit_error; - } - - /* mark ourselves as the owner */ - info->mtd->owner = THIS_MODULE; - - err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0); - if (err > 0) { - err = add_mtd_partitions(info->mtd, info->partitions, err); - if (err) - printk(KERN_ERR PFX "cannot add/parse partitions\n"); - } else { - err = add_mtd_device(info->mtd); - } - - if (err == 0) - return 0; - - /* fall through to exit error */ - - exit_error: - bast_flash_remove(pdev); - return err; -} - -static struct platform_driver bast_flash_driver = { - .probe = bast_flash_probe, - .remove = bast_flash_remove, - .driver = { - .name = "bast-nor", - .owner = THIS_MODULE, - }, -}; - -static int __init bast_flash_init(void) -{ - printk("BAST NOR-Flash Driver, (c) 2004 Simtec Electronics\n"); - return platform_driver_register(&bast_flash_driver); -} - -static void __exit bast_flash_exit(void) -{ - platform_driver_unregister(&bast_flash_driver); -} - -module_init(bast_flash_init); -module_exit(bast_flash_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); -MODULE_DESCRIPTION("BAST MTD Map driver"); -MODULE_ALIAS("platform:bast-nor"); diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c new file mode 100644 index 000000000000..6fec86aaed7e --- /dev/null +++ b/drivers/mtd/maps/bfin-async-flash.c @@ -0,0 +1,219 @@ +/* + * drivers/mtd/maps/bfin-async-flash.c + * + * Handle the case where flash memory and ethernet mac/phy are + * mapped onto the same async bank. The BF533-STAMP does this + * for example. All board-specific configuration goes in your + * board resources file. + * + * Copyright 2000 Nicolas Pitre <nico@cam.org> + * Copyright 2005-2008 Analog Devices Inc. + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <linux/platform_device.h> +#include <linux/types.h> + +#include <asm/blackfin.h> +#include <linux/gpio.h> +#include <linux/io.h> +#include <asm/unaligned.h> + +#define pr_devinit(fmt, args...) ({ static const __devinitconst char __fmt[] = fmt; printk(__fmt, ## args); }) + +#define DRIVER_NAME "bfin-async-flash" + +struct async_state { + struct mtd_info *mtd; + struct map_info map; + int enet_flash_pin; + uint32_t flash_ambctl0, flash_ambctl1; + uint32_t save_ambctl0, save_ambctl1; + unsigned long irq_flags; +}; + +static void switch_to_flash(struct async_state *state) +{ + local_irq_save(state->irq_flags); + + gpio_set_value(state->enet_flash_pin, 0); + + state->save_ambctl0 = bfin_read_EBIU_AMBCTL0(); + state->save_ambctl1 = bfin_read_EBIU_AMBCTL1(); + bfin_write_EBIU_AMBCTL0(state->flash_ambctl0); + bfin_write_EBIU_AMBCTL1(state->flash_ambctl1); + SSYNC(); +} + +static void switch_back(struct async_state *state) +{ + bfin_write_EBIU_AMBCTL0(state->save_ambctl0); + bfin_write_EBIU_AMBCTL1(state->save_ambctl1); + SSYNC(); + + gpio_set_value(state->enet_flash_pin, 1); + + local_irq_restore(state->irq_flags); +} + +static map_word bfin_read(struct map_info *map, unsigned long ofs) +{ + struct async_state *state = (struct async_state *)map->map_priv_1; + uint16_t word; + map_word test; + + switch_to_flash(state); + + word = readw(map->virt + ofs); + + switch_back(state); + + test.x[0] = word; + return test; +} + +static void bfin_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) +{ + struct async_state *state = (struct async_state *)map->map_priv_1; + + switch_to_flash(state); + + memcpy(to, map->virt + from, len); + + switch_back(state); +} + +static void bfin_write(struct map_info *map, map_word d1, unsigned long ofs) +{ + struct async_state *state = (struct async_state *)map->map_priv_1; + uint16_t d; + + d = d1.x[0]; + + switch_to_flash(state); + + writew(d, map->virt + ofs); + SSYNC(); + + switch_back(state); +} + +static void bfin_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) +{ + struct async_state *state = (struct async_state *)map->map_priv_1; + + switch_to_flash(state); + + memcpy(map->virt + to, from, len); + SSYNC(); + + switch_back(state); +} + +#ifdef CONFIG_MTD_PARTITIONS +static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; +#endif + +static int __devinit bfin_flash_probe(struct platform_device *pdev) +{ + int ret; + struct physmap_flash_data *pdata = pdev->dev.platform_data; + struct resource *memory = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct resource *flash_ambctl = platform_get_resource(pdev, IORESOURCE_MEM, 1); + struct async_state *state; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + + state->map.name = DRIVER_NAME; + state->map.read = bfin_read; + state->map.copy_from = bfin_copy_from; + state->map.write = bfin_write; + state->map.copy_to = bfin_copy_to; + state->map.bankwidth = pdata->width; + state->map.size = memory->end - memory->start + 1; + state->map.virt = (void __iomem *)memory->start; + state->map.phys = memory->start; + state->map.map_priv_1 = (unsigned long)state; + state->enet_flash_pin = platform_get_irq(pdev, 0); + state->flash_ambctl0 = flash_ambctl->start; + state->flash_ambctl1 = flash_ambctl->end; + + if (gpio_request(state->enet_flash_pin, DRIVER_NAME)) { + pr_devinit(KERN_ERR DRIVER_NAME ": Failed to request gpio %d\n", state->enet_flash_pin); + return -EBUSY; + } + gpio_direction_output(state->enet_flash_pin, 1); + + pr_devinit(KERN_NOTICE DRIVER_NAME ": probing %d-bit flash bus\n", state->map.bankwidth * 8); + state->mtd = do_map_probe(memory->name, &state->map); + if (!state->mtd) + return -ENXIO; + +#ifdef CONFIG_MTD_PARTITIONS + ret = parse_mtd_partitions(state->mtd, part_probe_types, &pdata->parts, 0); + if (ret > 0) { + pr_devinit(KERN_NOTICE DRIVER_NAME ": Using commandline partition definition\n"); + add_mtd_partitions(state->mtd, pdata->parts, ret); + + } else if (pdata->nr_parts) { + pr_devinit(KERN_NOTICE DRIVER_NAME ": Using board partition definition\n"); + add_mtd_partitions(state->mtd, pdata->parts, pdata->nr_parts); + + } else +#endif + { + pr_devinit(KERN_NOTICE DRIVER_NAME ": no partition info available, registering whole flash at once\n"); + add_mtd_device(state->mtd); + } + + platform_set_drvdata(pdev, state); + + return 0; +} + +static int __devexit bfin_flash_remove(struct platform_device *pdev) +{ + struct async_state *state = platform_get_drvdata(pdev); + gpio_free(state->enet_flash_pin); +#ifdef CONFIG_MTD_PARTITIONS + del_mtd_partitions(state->mtd); +#endif + map_destroy(state->mtd); + kfree(state); + return 0; +} + +static struct platform_driver bfin_flash_driver = { + .probe = bfin_flash_probe, + .remove = __devexit_p(bfin_flash_remove), + .driver = { + .name = DRIVER_NAME, + }, +}; + +static int __init bfin_flash_init(void) +{ + return platform_driver_register(&bfin_flash_driver); +} +module_init(bfin_flash_init); + +static void __exit bfin_flash_exit(void) +{ + platform_driver_unregister(&bfin_flash_driver); +} +module_exit(bfin_flash_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MTD map driver for Blackfins with flash/ethernet on same async bank"); diff --git a/drivers/mtd/maps/cdb89712.c b/drivers/mtd/maps/cdb89712.c index 9f17bb6c5a9d..cb507da0a87d 100644 --- a/drivers/mtd/maps/cdb89712.c +++ b/drivers/mtd/maps/cdb89712.c @@ -1,7 +1,6 @@ /* * Flash on Cirrus CDB89712 * - * $Id: cdb89712.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/ceiva.c b/drivers/mtd/maps/ceiva.c index 629e6e2641a8..6464d487eb1a 100644 --- a/drivers/mtd/maps/ceiva.c +++ b/drivers/mtd/maps/ceiva.c @@ -11,7 +11,6 @@ * * (C) 2000 Nicolas Pitre <nico@cam.org> * - * $Id: ceiva.c,v 1.11 2004/09/16 23:27:12 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c index 65e5ee552010..0ecc3f6d735b 100644 --- a/drivers/mtd/maps/cfi_flagadm.c +++ b/drivers/mtd/maps/cfi_flagadm.c @@ -1,8 +1,6 @@ /* * Copyright © 2001 Flaga hf. Medical Devices, Kári DavÃðsson <kd@flaga.is> * - * $Id: cfi_flagadm.c,v 1.15 2005/11/07 11:14:26 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c index 92a9c7fac993..e115667bf1d0 100644 --- a/drivers/mtd/maps/dbox2-flash.c +++ b/drivers/mtd/maps/dbox2-flash.c @@ -1,6 +1,4 @@ /* - * $Id: dbox2-flash.c,v 1.14 2005/11/07 11:14:26 gleixner Exp $ - * * D-Box 2 flash driver */ diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c index b32bb9347d71..3aa018c092f8 100644 --- a/drivers/mtd/maps/dc21285.c +++ b/drivers/mtd/maps/dc21285.c @@ -4,8 +4,6 @@ * (C) 2000 Nicolas Pitre <nico@cam.org> * * This code is GPL - * - * $Id: dc21285.c,v 1.24 2005/11/07 11:14:26 gleixner Exp $ */ #include <linux/module.h> #include <linux/types.h> diff --git a/drivers/mtd/maps/dilnetpc.c b/drivers/mtd/maps/dilnetpc.c index 1c3b34ad7325..0713e3a5a22c 100644 --- a/drivers/mtd/maps/dilnetpc.c +++ b/drivers/mtd/maps/dilnetpc.c @@ -14,8 +14,6 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * - * $Id: dilnetpc.c,v 1.20 2005/11/07 11:14:26 gleixner Exp $ - * * The DIL/Net PC is a tiny embedded PC board made by SSV Embedded Systems * featuring the AMD Elan SC410 processor. There are two variants of this * board: DNP/1486 and ADNP/1486. The DNP version has 2 megs of flash diff --git a/drivers/mtd/maps/dmv182.c b/drivers/mtd/maps/dmv182.c index e0558b0b2fe6..d171674eb2ed 100644 --- a/drivers/mtd/maps/dmv182.c +++ b/drivers/mtd/maps/dmv182.c @@ -4,8 +4,6 @@ * * Flash map driver for the Dy4 SVME182 board * - * $Id: dmv182.c,v 1.6 2005/11/07 11:14:26 gleixner Exp $ - * * Copyright 2003-2004, TimeSys Corporation * * Based on the SVME181 flash map, by Tom Nelson, Dot4, Inc. for TimeSys Corp. diff --git a/drivers/mtd/maps/ebony.c b/drivers/mtd/maps/ebony.c index 1488bb92f26f..d92b7c70d3ed 100644 --- a/drivers/mtd/maps/ebony.c +++ b/drivers/mtd/maps/ebony.c @@ -1,6 +1,4 @@ /* - * $Id: ebony.c,v 1.16 2005/11/07 11:14:26 gleixner Exp $ - * * Mapping for Ebony user flash * * Matt Porter <mporter@kernel.crashing.org> diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c index 1c5b97c89685..9433738c1664 100644 --- a/drivers/mtd/maps/edb7312.c +++ b/drivers/mtd/maps/edb7312.c @@ -1,6 +1,4 @@ /* - * $Id: edb7312.c,v 1.14 2005/11/07 11:14:27 gleixner Exp $ - * * Handle mapping of the NOR flash on Cogent EDB7312 boards * * Copyright 2002 SYSGO Real-Time Solutions GmbH diff --git a/drivers/mtd/maps/fortunet.c b/drivers/mtd/maps/fortunet.c index 7c50c271651c..a8e3fde4cbd5 100644 --- a/drivers/mtd/maps/fortunet.c +++ b/drivers/mtd/maps/fortunet.c @@ -1,6 +1,5 @@ /* fortunet.c memory map * - * $Id: fortunet.c,v 1.11 2005/11/07 11:14:27 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c index 6dde3182d64a..ef8915474462 100644 --- a/drivers/mtd/maps/h720x-flash.c +++ b/drivers/mtd/maps/h720x-flash.c @@ -2,8 +2,6 @@ * Flash memory access on Hynix GMS30C7201/HMS30C7202 based * evaluation boards * - * $Id: h720x-flash.c,v 1.12 2005/11/07 11:14:27 gleixner Exp $ - * * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com> * 2003 Thomas Gleixner <tglx@linutronix.de> */ diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c index 2c884c49e84a..aeb6c916e23f 100644 --- a/drivers/mtd/maps/ichxrom.c +++ b/drivers/mtd/maps/ichxrom.c @@ -2,7 +2,6 @@ * ichxrom.c * * Normal mappings of chips in physical memory - * $Id: ichxrom.c,v 1.19 2005/11/07 11:14:27 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c index a0b4dc7155dc..2682ab51a367 100644 --- a/drivers/mtd/maps/impa7.c +++ b/drivers/mtd/maps/impa7.c @@ -1,6 +1,4 @@ /* - * $Id: impa7.c,v 1.14 2005/11/07 11:14:27 gleixner Exp $ - * * Handle mapping of the NOR flash on implementa A7 boards * * Copyright 2002 SYSGO Real-Time Solutions GmbH diff --git a/drivers/mtd/maps/integrator-flash.c b/drivers/mtd/maps/integrator-flash.c index 325c8880c437..ee361aaadb1e 100644 --- a/drivers/mtd/maps/integrator-flash.c +++ b/drivers/mtd/maps/integrator-flash.c @@ -22,8 +22,6 @@ This is access code for flashes using ARM's flash partitioning standards. - $Id: integrator-flash.c,v 1.20 2005/11/07 11:14:27 gleixner Exp $ - ======================================================================*/ #include <linux/module.h> diff --git a/drivers/mtd/maps/ipaq-flash.c b/drivers/mtd/maps/ipaq-flash.c index f27c132794c3..a806119797e0 100644 --- a/drivers/mtd/maps/ipaq-flash.c +++ b/drivers/mtd/maps/ipaq-flash.c @@ -4,8 +4,6 @@ * (C) 2000 Nicolas Pitre <nico@cam.org> * (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com> * (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes - * - * $Id: ipaq-flash.c,v 1.5 2005/11/07 11:14:27 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c index c8396b8574c4..c2264792a20b 100644 --- a/drivers/mtd/maps/ixp2000.c +++ b/drivers/mtd/maps/ixp2000.c @@ -1,6 +1,4 @@ /* - * $Id: ixp2000.c,v 1.9 2005/11/07 11:14:27 gleixner Exp $ - * * drivers/mtd/maps/ixp2000.c * * Mapping for the Intel XScale IXP2000 based systems diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c index 01f19a4714b5..9c7a5fbd4e51 100644 --- a/drivers/mtd/maps/ixp4xx.c +++ b/drivers/mtd/maps/ixp4xx.c @@ -1,6 +1,4 @@ /* - * $Id: ixp4xx.c,v 1.13 2005/11/16 16:23:21 dvrabel Exp $ - * * drivers/mtd/maps/ixp4xx.c * * MTD Map file for IXP4XX based systems. Please do not make per-board diff --git a/drivers/mtd/maps/l440gx.c b/drivers/mtd/maps/l440gx.c index 67620adf4811..9e054503c4cf 100644 --- a/drivers/mtd/maps/l440gx.c +++ b/drivers/mtd/maps/l440gx.c @@ -1,6 +1,4 @@ /* - * $Id: l440gx.c,v 1.18 2005/11/07 11:14:27 gleixner Exp $ - * * BIOS Flash chip on Intel 440GX board. * * Bugs this currently does not work under linuxBIOS. diff --git a/drivers/mtd/maps/map_funcs.c b/drivers/mtd/maps/map_funcs.c index 9105e6ca0aa6..3f268370eeca 100644 --- a/drivers/mtd/maps/map_funcs.c +++ b/drivers/mtd/maps/map_funcs.c @@ -1,6 +1,4 @@ /* - * $Id: map_funcs.c,v 1.10 2005/06/06 23:04:36 tpoynor Exp $ - * * Out-of-line map I/O functions for simple maps when CONFIG_COMPLEX_MAPPINGS * is enabled. */ diff --git a/drivers/mtd/maps/mbx860.c b/drivers/mtd/maps/mbx860.c index 06b118727846..706f67394b07 100644 --- a/drivers/mtd/maps/mbx860.c +++ b/drivers/mtd/maps/mbx860.c @@ -1,6 +1,4 @@ /* - * $Id: mbx860.c,v 1.9 2005/11/07 11:14:27 gleixner Exp $ - * * Handle mapping of the flash on MBX860 boards * * Author: Anton Todorov diff --git a/drivers/mtd/maps/mtx-1_flash.c b/drivers/mtd/maps/mtx-1_flash.c deleted file mode 100644 index 2a8fde9b92f0..000000000000 --- a/drivers/mtd/maps/mtx-1_flash.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Flash memory access on 4G Systems MTX-1 boards - * - * $Id: mtx-1_flash.c,v 1.2 2005/11/07 11:14:27 gleixner Exp $ - * - * (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz> - * (C) 2005 Joern Engel <joern@wohnheim.fh-wedel.de> - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/kernel.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> - -static struct map_info mtx1_map = { - .name = "MTX-1 flash", - .bankwidth = 4, - .size = 0x2000000, - .phys = 0x1E000000, -}; - -static struct mtd_partition mtx1_partitions[] = { - { - .name = "filesystem", - .size = 0x01C00000, - .offset = 0, - },{ - .name = "yamon", - .size = 0x00100000, - .offset = MTDPART_OFS_APPEND, - .mask_flags = MTD_WRITEABLE, - },{ - .name = "kernel", - .size = 0x002c0000, - .offset = MTDPART_OFS_APPEND, - },{ - .name = "yamon env", - .size = 0x00040000, - .offset = MTDPART_OFS_APPEND, - } -}; - -static struct mtd_info *mtx1_mtd; - -int __init mtx1_mtd_init(void) -{ - int ret = -ENXIO; - - simple_map_init(&mtx1_map); - - mtx1_map.virt = ioremap(mtx1_map.phys, mtx1_map.size); - if (!mtx1_map.virt) - return -EIO; - - mtx1_mtd = do_map_probe("cfi_probe", &mtx1_map); - if (!mtx1_mtd) - goto err; - - mtx1_mtd->owner = THIS_MODULE; - - ret = add_mtd_partitions(mtx1_mtd, mtx1_partitions, - ARRAY_SIZE(mtx1_partitions)); - if (ret) - goto err; - - return 0; - -err: - iounmap(mtx1_map.virt); - return ret; -} - -static void __exit mtx1_mtd_cleanup(void) -{ - if (mtx1_mtd) { - del_mtd_partitions(mtx1_mtd); - map_destroy(mtx1_mtd); - } - if (mtx1_map.virt) - iounmap(mtx1_map.virt); -} - -module_init(mtx1_mtd_init); -module_exit(mtx1_mtd_cleanup); - -MODULE_AUTHOR("Bruno Randolf <bruno.randolf@4g-systems.biz>"); -MODULE_DESCRIPTION("MTX-1 flash map"); -MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/maps/netsc520.c b/drivers/mtd/maps/netsc520.c index 95dcab2146ad..c0cb319b2b70 100644 --- a/drivers/mtd/maps/netsc520.c +++ b/drivers/mtd/maps/netsc520.c @@ -3,8 +3,6 @@ * Copyright (C) 2001 Mark Langsdorf (mark.langsdorf@amd.com) * based on sc520cdp.c by Sysgo Real-Time Solutions GmbH * - * $Id: netsc520.c,v 1.14 2005/11/07 11:14:27 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c index 0c9b305a72e0..965e6c6d6ab0 100644 --- a/drivers/mtd/maps/nettel.c +++ b/drivers/mtd/maps/nettel.c @@ -5,8 +5,6 @@ * * (C) Copyright 2000-2001, Greg Ungerer (gerg@snapgear.com) * (C) Copyright 2001-2002, SnapGear (www.snapgear.com) - * - * $Id: nettel.c,v 1.12 2005/11/29 14:30:00 gleixner Exp $ */ /****************************************************************************/ diff --git a/drivers/mtd/maps/octagon-5066.c b/drivers/mtd/maps/octagon-5066.c index a6642db3d325..43e04c1d22a9 100644 --- a/drivers/mtd/maps/octagon-5066.c +++ b/drivers/mtd/maps/octagon-5066.c @@ -1,4 +1,3 @@ -// $Id: octagon-5066.c,v 1.28 2005/11/07 11:14:27 gleixner Exp $ /* ###################################################################### Octagon 5066 MTD Driver. diff --git a/drivers/mtd/maps/omap-toto-flash.c b/drivers/mtd/maps/omap-toto-flash.c index e6e391efbeb6..0a60ebbc2175 100644 --- a/drivers/mtd/maps/omap-toto-flash.c +++ b/drivers/mtd/maps/omap-toto-flash.c @@ -4,8 +4,6 @@ * jzhang@ti.com (C) 2003 Texas Instruments. * * (C) 2002 MontVista Software, Inc. - * - * $Id: omap-toto-flash.c,v 1.5 2005/11/07 11:14:27 gleixner Exp $ */ #include <linux/module.h> diff --git a/drivers/mtd/maps/omap_nor.c b/drivers/mtd/maps/omap_nor.c index c12d8056bebd..68eec6c6c517 100644 --- a/drivers/mtd/maps/omap_nor.c +++ b/drivers/mtd/maps/omap_nor.c @@ -60,13 +60,22 @@ struct omapflash_info { static void omap_set_vpp(struct map_info *map, int enable) { static int count; - - if (enable) { - if (count++ == 0) - OMAP_EMIFS_CONFIG_REG |= OMAP_EMIFS_CONFIG_WP; - } else { - if (count && (--count == 0)) - OMAP_EMIFS_CONFIG_REG &= ~OMAP_EMIFS_CONFIG_WP; + u32 l; + + if (cpu_class_is_omap1()) { + if (enable) { + if (count++ == 0) { + l = omap_readl(EMIFS_CONFIG); + l |= OMAP_EMIFS_CONFIG_WP; + omap_writel(l, EMIFS_CONFIG); + } + } else { + if (count && (--count == 0)) { + l = omap_readl(EMIFS_CONFIG); + l &= ~OMAP_EMIFS_CONFIG_WP; + omap_writel(l, EMIFS_CONFIG); + } + } } } diff --git a/drivers/mtd/maps/pci.c b/drivers/mtd/maps/pci.c index d2ab1bae9c34..5c6a25c90380 100644 --- a/drivers/mtd/maps/pci.c +++ b/drivers/mtd/maps/pci.c @@ -7,8 +7,6 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * - * $Id: pci.c,v 1.14 2005/11/17 08:20:27 dwmw2 Exp $ - * * Generic PCI memory map driver. We support the following boards: * - Intel IQ80310 ATU. * - Intel EBSA285 (blank rom programming mode). Tested working 27/09/2001 diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index 1912d968718b..90924fb00481 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -1,6 +1,4 @@ /* - * $Id: pcmciamtd.c,v 1.55 2005/11/07 11:14:28 gleixner Exp $ - * * pcmciamtd.c - MTD driver for PCMCIA flash memory cards * * Author: Simon Evans <spse@secret.org.uk> @@ -48,7 +46,6 @@ static const int debug = 0; #define DRIVER_DESC "PCMCIA Flash memory card driver" -#define DRIVER_VERSION "$Revision: 1.55 $" /* Size of the PCMCIA address space: 26 bits = 64 MB */ #define MAX_PCMCIA_ADDR 0x4000000 @@ -498,17 +495,14 @@ static int pcmciamtd_config(struct pcmcia_device *link) int i; config_info_t t; static char *probes[] = { "jedec_probe", "cfi_probe" }; - cisinfo_t cisinfo; int new_name = 0; DEBUG(3, "link=0x%p", link); DEBUG(2, "Validating CIS"); - ret = pcmcia_validate_cis(link, &cisinfo); + ret = pcmcia_validate_cis(link, NULL); if(ret != CS_SUCCESS) { cs_error(link, GetTupleData, ret); - } else { - DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); } card_settings(dev, link, &new_name); @@ -563,9 +557,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); /* Get write protect status */ - CS_CHECK(GetStatus, pcmcia_get_status(link, &status)); - DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", - status.CardState, (unsigned long)link->win); + DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win); dev->win_base = ioremap(req.Base, req.Size); if(!dev->win_base) { err("ioremap(%lu, %u) failed", req.Base, req.Size); @@ -790,7 +782,7 @@ static struct pcmcia_driver pcmciamtd_driver = { static int __init init_pcmciamtd(void) { - info(DRIVER_DESC " " DRIVER_VERSION); + info(DRIVER_DESC); if(bankwidth && bankwidth != 1 && bankwidth != 2) { info("bad bankwidth (%d), using default", bankwidth); diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index 183255fcfdcb..42d844f8f6bf 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -1,6 +1,4 @@ /* - * $Id: physmap.c,v 1.39 2005/11/29 14:49:36 gleixner Exp $ - * * Normal mappings of chips in physical memory * * Copyright (C) 2003 MontaVista Software Inc. @@ -203,7 +201,19 @@ static int physmap_flash_suspend(struct platform_device *dev, pm_message_t state int i; for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++) - ret |= info->mtd[i]->suspend(info->mtd[i]); + if (info->mtd[i]->suspend) { + ret = info->mtd[i]->suspend(info->mtd[i]); + if (ret) + goto fail; + } + + return 0; +fail: + for (--i; i >= 0; --i) + if (info->mtd[i]->suspend) { + BUG_ON(!info->mtd[i]->resume); + info->mtd[i]->resume(info->mtd[i]); + } return ret; } @@ -214,7 +224,8 @@ static int physmap_flash_resume(struct platform_device *dev) int i; for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++) - info->mtd[i]->resume(info->mtd[i]); + if (info->mtd[i]->resume) + info->mtd[i]->resume(info->mtd[i]); return 0; } @@ -225,8 +236,9 @@ static void physmap_flash_shutdown(struct platform_device *dev) int i; for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++) - if (info->mtd[i]->suspend(info->mtd[i]) == 0) - info->mtd[i]->resume(info->mtd[i]); + if (info->mtd[i]->suspend && info->mtd[i]->resume) + if (info->mtd[i]->suspend(info->mtd[i]) == 0) + info->mtd[i]->resume(info->mtd[i]); } #else #define physmap_flash_suspend NULL diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c index 3eb2643b2328..e7dd9c8a965e 100644 --- a/drivers/mtd/maps/plat-ram.c +++ b/drivers/mtd/maps/plat-ram.c @@ -6,8 +6,6 @@ * * Generic platfrom device based RAM map * - * $Id: plat-ram.c,v 1.7 2005/11/07 11:14:28 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/drivers/mtd/maps/redwood.c b/drivers/mtd/maps/redwood.c index 4d858b3d5f82..de002eb1a7fe 100644 --- a/drivers/mtd/maps/redwood.c +++ b/drivers/mtd/maps/redwood.c @@ -1,6 +1,4 @@ /* - * $Id: redwood.c,v 1.11 2005/11/07 11:14:28 gleixner Exp $ - * * drivers/mtd/maps/redwood.c * * FLASH map for the IBM Redwood 4/5/6 boards. diff --git a/drivers/mtd/maps/rpxlite.c b/drivers/mtd/maps/rpxlite.c index 809a0c8e7aaf..14d90edb4430 100644 --- a/drivers/mtd/maps/rpxlite.c +++ b/drivers/mtd/maps/rpxlite.c @@ -1,6 +1,4 @@ /* - * $Id: rpxlite.c,v 1.22 2004/11/04 13:24:15 gleixner Exp $ - * * Handle mapping of the flash on the RPX Lite and CLLF boards */ diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index c7d5a52a2d55..e177a43dfff0 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -2,8 +2,6 @@ * Flash memory access on SA11x0 based devices * * (C) 2000 Nicolas Pitre <nico@cam.org> - * - * $Id: sa1100-flash.c,v 1.51 2005/11/07 11:14:28 gleixner Exp $ */ #include <linux/module.h> #include <linux/types.h> diff --git a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c index b8c1331b7a04..6e1e99cd2b59 100644 --- a/drivers/mtd/maps/sbc8240.c +++ b/drivers/mtd/maps/sbc8240.c @@ -4,9 +4,6 @@ * Carolyn Smith, Tektronix, Inc. * * This code is GPLed - * - * $Id: sbc8240.c,v 1.5 2005/11/07 11:14:28 gleixner Exp $ - * */ /* diff --git a/drivers/mtd/maps/sbc_gxx.c b/drivers/mtd/maps/sbc_gxx.c index 7cc4041d096d..1b1c0b7e11ef 100644 --- a/drivers/mtd/maps/sbc_gxx.c +++ b/drivers/mtd/maps/sbc_gxx.c @@ -17,8 +17,6 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - $Id: sbc_gxx.c,v 1.35 2005/11/07 11:14:28 gleixner Exp $ - The SBC-MediaGX / SBC-GXx has up to 16 MiB of Intel StrataFlash (28F320/28F640) in x8 mode. diff --git a/drivers/mtd/maps/sc520cdp.c b/drivers/mtd/maps/sc520cdp.c index 4045e372b90d..85c1e56309ec 100644 --- a/drivers/mtd/maps/sc520cdp.c +++ b/drivers/mtd/maps/sc520cdp.c @@ -16,8 +16,6 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * - * $Id: sc520cdp.c,v 1.23 2005/11/17 08:20:27 dwmw2 Exp $ - * * * The SC520CDP is an evaluation board for the Elan SC520 processor available * from AMD. It has two banks of 32-bit Flash ROM, each 8 Megabytes in size, diff --git a/drivers/mtd/maps/scb2_flash.c b/drivers/mtd/maps/scb2_flash.c index 0fc5584324e3..21169e6d646c 100644 --- a/drivers/mtd/maps/scb2_flash.c +++ b/drivers/mtd/maps/scb2_flash.c @@ -1,6 +1,5 @@ /* * MTD map driver for BIOS Flash on Intel SCB2 boards - * $Id: scb2_flash.c,v 1.12 2005/03/18 14:04:35 gleixner Exp $ * Copyright (C) 2002 Sun Microsystems, Inc. * Tim Hockin <thockin@sun.com> * diff --git a/drivers/mtd/maps/scx200_docflash.c b/drivers/mtd/maps/scx200_docflash.c index 5e2bce22f37c..b5391ebb736e 100644 --- a/drivers/mtd/maps/scx200_docflash.c +++ b/drivers/mtd/maps/scx200_docflash.c @@ -2,8 +2,6 @@ Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com> - $Id: scx200_docflash.c,v 1.12 2005/11/07 11:14:28 gleixner Exp $ - National Semiconductor SCx200 flash mapped with DOCCS */ diff --git a/drivers/mtd/maps/sharpsl-flash.c b/drivers/mtd/maps/sharpsl-flash.c index 917dc778f24e..026eab028189 100644 --- a/drivers/mtd/maps/sharpsl-flash.c +++ b/drivers/mtd/maps/sharpsl-flash.c @@ -4,8 +4,6 @@ * Copyright (C) 2001 Lineo Japan, Inc. * Copyright (C) 2002 SHARP * - * $Id: sharpsl-flash.c,v 1.7 2005/11/07 11:14:28 gleixner Exp $ - * * based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp * Handle mapping of the flash on the RPX Lite and CLLF boards * diff --git a/drivers/mtd/maps/solutionengine.c b/drivers/mtd/maps/solutionengine.c index d76ceef453ce..0eb41d9c6786 100644 --- a/drivers/mtd/maps/solutionengine.c +++ b/drivers/mtd/maps/solutionengine.c @@ -1,6 +1,4 @@ /* - * $Id: solutionengine.c,v 1.15 2005/11/07 11:14:28 gleixner Exp $ - * * Flash and EPROM on Hitachi Solution Engine and similar boards. * * (C) 2001 Red Hat, Inc. diff --git a/drivers/mtd/maps/sun_uflash.c b/drivers/mtd/maps/sun_uflash.c index 001af7f7ddda..0d7c88396c88 100644 --- a/drivers/mtd/maps/sun_uflash.c +++ b/drivers/mtd/maps/sun_uflash.c @@ -1,4 +1,4 @@ -/* $Id: sun_uflash.c,v 1.13 2005/11/07 11:14:28 gleixner Exp $ +/* * * sun_uflash - Driver implementation for user-programmable flash * present on many Sun Microsystems SME boardsets. diff --git a/drivers/mtd/maps/tqm8xxl.c b/drivers/mtd/maps/tqm8xxl.c index 521734057314..a5d3d8531faa 100644 --- a/drivers/mtd/maps/tqm8xxl.c +++ b/drivers/mtd/maps/tqm8xxl.c @@ -2,8 +2,6 @@ * Handle mapping of the flash memory access routines * on TQM8xxL based devices. * - * $Id: tqm8xxl.c,v 1.15 2005/11/07 11:14:28 gleixner Exp $ - * * based on rpxlite.c * * Copyright(C) 2001 Kirk Lee <kirk@hpc.ee.ntu.edu.tw> diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c index b47270e850bc..e2147bf11c88 100644 --- a/drivers/mtd/maps/ts5500_flash.c +++ b/drivers/mtd/maps/ts5500_flash.c @@ -22,8 +22,6 @@ * - Drive A and B use the resident flash disk (RFD) flash translation layer. * - If you have created your own jffs file system and the bios overwrites * it during boot, try disabling Drive A: and B: in the boot order. - * - * $Id: ts5500_flash.c,v 1.5 2005/11/07 11:14:28 gleixner Exp $ */ #include <linux/init.h> diff --git a/drivers/mtd/maps/tsunami_flash.c b/drivers/mtd/maps/tsunami_flash.c index 0f915ac3102e..77a8bfc02577 100644 --- a/drivers/mtd/maps/tsunami_flash.c +++ b/drivers/mtd/maps/tsunami_flash.c @@ -2,7 +2,6 @@ * tsunami_flash.c * * flash chip on alpha ds10... - * $Id: tsunami_flash.c,v 1.10 2005/11/07 11:14:29 gleixner Exp $ */ #include <asm/io.h> #include <asm/core_tsunami.h> diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c index c42f4b83f686..0dc645f8152f 100644 --- a/drivers/mtd/maps/uclinux.c +++ b/drivers/mtd/maps/uclinux.c @@ -4,8 +4,6 @@ * uclinux.c -- generic memory mapped MTD driver for uclinux * * (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com) - * - * $Id: uclinux.c,v 1.12 2005/11/07 11:14:29 gleixner Exp $ */ /****************************************************************************/ @@ -15,6 +13,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/fs.h> +#include <linux/mm.h> #include <linux/major.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> diff --git a/drivers/mtd/maps/vmax301.c b/drivers/mtd/maps/vmax301.c index b3e487395435..5a0c9a353b0f 100644 --- a/drivers/mtd/maps/vmax301.c +++ b/drivers/mtd/maps/vmax301.c @@ -1,4 +1,3 @@ -// $Id: vmax301.c,v 1.32 2005/11/07 11:14:29 gleixner Exp $ /* ###################################################################### Tempustech VMAX SBC301 MTD Driver. diff --git a/drivers/mtd/maps/walnut.c b/drivers/mtd/maps/walnut.c index ca932122fb64..e243476c8171 100644 --- a/drivers/mtd/maps/walnut.c +++ b/drivers/mtd/maps/walnut.c @@ -1,6 +1,4 @@ /* - * $Id: walnut.c,v 1.3 2005/11/07 11:14:29 gleixner Exp $ - * * Mapping for Walnut flash * (used ebony.c as a "framework") * diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c index ac5b8105b6ef..413b0cf9bbd2 100644 --- a/drivers/mtd/maps/wr_sbc82xx_flash.c +++ b/drivers/mtd/maps/wr_sbc82xx_flash.c @@ -1,6 +1,4 @@ /* - * $Id: wr_sbc82xx_flash.c,v 1.8 2005/11/07 11:14:29 gleixner Exp $ - * * Map for flash chips on Wind River PowerQUICC II SBC82xx board. * * Copyright (C) 2004 Red Hat, Inc. diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 839eed8430a2..9ff007c4962c 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -1,6 +1,4 @@ /* - * $Id: mtd_blkdevs.c,v 1.27 2005/11/07 11:14:20 gleixner Exp $ - * * (C) 2003 David Woodhouse <dwmw2@infradead.org> * * Interface to Linux 2.5 block layer for MTD 'translation layers'. @@ -212,7 +210,7 @@ static struct block_device_operations mtd_blktrans_ops = { int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) { struct mtd_blktrans_ops *tr = new->tr; - struct list_head *this; + struct mtd_blktrans_dev *d; int last_devnum = -1; struct gendisk *gd; @@ -221,8 +219,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) BUG(); } - list_for_each(this, &tr->devs) { - struct mtd_blktrans_dev *d = list_entry(this, struct mtd_blktrans_dev, list); + list_for_each_entry(d, &tr->devs, list) { if (new->devnum == -1) { /* Use first free number */ if (d->devnum != last_devnum+1) { @@ -309,33 +306,24 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old) static void blktrans_notify_remove(struct mtd_info *mtd) { - struct list_head *this, *this2, *next; - - list_for_each(this, &blktrans_majors) { - struct mtd_blktrans_ops *tr = list_entry(this, struct mtd_blktrans_ops, list); - - list_for_each_safe(this2, next, &tr->devs) { - struct mtd_blktrans_dev *dev = list_entry(this2, struct mtd_blktrans_dev, list); + struct mtd_blktrans_ops *tr; + struct mtd_blktrans_dev *dev, *next; + list_for_each_entry(tr, &blktrans_majors, list) + list_for_each_entry_safe(dev, next, &tr->devs, list) if (dev->mtd == mtd) tr->remove_dev(dev); - } - } } static void blktrans_notify_add(struct mtd_info *mtd) { - struct list_head *this; + struct mtd_blktrans_ops *tr; if (mtd->type == MTD_ABSENT) return; - list_for_each(this, &blktrans_majors) { - struct mtd_blktrans_ops *tr = list_entry(this, struct mtd_blktrans_ops, list); - + list_for_each_entry(tr, &blktrans_majors, list) tr->add_mtd(tr, mtd); - } - } static struct mtd_notifier blktrans_notifier = { @@ -406,7 +394,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr) int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr) { - struct list_head *this, *next; + struct mtd_blktrans_dev *dev, *next; mutex_lock(&mtd_table_mutex); @@ -416,10 +404,8 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr) /* Remove it from the list of active majors */ list_del(&tr->list); - list_for_each_safe(this, next, &tr->devs) { - struct mtd_blktrans_dev *dev = list_entry(this, struct mtd_blktrans_dev, list); + list_for_each_entry_safe(dev, next, &tr->devs, list) tr->remove_dev(dev); - } blk_cleanup_queue(tr->blkcore_priv->rq); unregister_blkdev(tr->major, tr->name); diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 952da30b1745..208c6faa0358 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -1,8 +1,6 @@ /* * Direct MTD block device access * - * $Id: mtdblock.c,v 1.68 2005/11/07 11:14:20 gleixner Exp $ - * * (C) 2000-2003 Nicolas Pitre <nico@cam.org> * (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> */ diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c index f79dbb49b1a2..852165f8b1c3 100644 --- a/drivers/mtd/mtdblock_ro.c +++ b/drivers/mtd/mtdblock_ro.c @@ -1,6 +1,4 @@ /* - * $Id: mtdblock_ro.c,v 1.19 2004/11/16 18:28:59 dwmw2 Exp $ - * * (C) 2003 David Woodhouse <dwmw2@infradead.org> * * Simple read-only (writable only for RAM) mtdblock driver diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 5d3ac512ce16..d2f331876e4c 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1,6 +1,4 @@ /* - * $Id: mtdchar.c,v 1.76 2005/11/07 11:14:20 gleixner Exp $ - * * Character-device access to raw MTD devices. * */ @@ -14,6 +12,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/smp_lock.h> #include <linux/mtd/mtd.h> #include <linux/mtd/compatmac.h> @@ -27,10 +26,13 @@ static void mtd_notify_add(struct mtd_info* mtd) if (!mtd) return; - device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2), "mtd%d", mtd->index); + device_create_drvdata(mtd_class, NULL, + MKDEV(MTD_CHAR_MAJOR, mtd->index*2), + NULL, "mtd%d", mtd->index); - device_create(mtd_class, NULL, - MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1), "mtd%dro", mtd->index); + device_create_drvdata(mtd_class, NULL, + MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1), + NULL, "mtd%dro", mtd->index); } static void mtd_notify_remove(struct mtd_info* mtd) @@ -86,6 +88,7 @@ static int mtd_open(struct inode *inode, struct file *file) { int minor = iminor(inode); int devnum = minor >> 1; + int ret = 0; struct mtd_info *mtd; struct mtd_file_info *mfi; @@ -98,31 +101,39 @@ static int mtd_open(struct inode *inode, struct file *file) if ((file->f_mode & 2) && (minor & 1)) return -EACCES; + lock_kernel(); mtd = get_mtd_device(NULL, devnum); - if (IS_ERR(mtd)) - return PTR_ERR(mtd); + if (IS_ERR(mtd)) { + ret = PTR_ERR(mtd); + goto out; + } if (MTD_ABSENT == mtd->type) { put_mtd_device(mtd); - return -ENODEV; + ret = -ENODEV; + goto out; } /* You can't open it RW if it's not a writeable device */ if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) { put_mtd_device(mtd); - return -EACCES; + ret = -EACCES; + goto out; } mfi = kzalloc(sizeof(*mfi), GFP_KERNEL); if (!mfi) { put_mtd_device(mtd); - return -ENOMEM; + ret = -ENOMEM; + goto out; } mfi->mtd = mtd; file->private_data = mfi; - return 0; +out: + unlock_kernel(); + return ret; } /* mtd_open */ /*====================================================================*/ @@ -481,6 +492,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, { struct mtd_oob_buf buf; struct mtd_oob_ops ops; + struct mtd_oob_buf __user *user_buf = argp; uint32_t retlen; if(!(file->f_mode & 2)) @@ -524,8 +536,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file, if (ops.oobretlen > 0xFFFFFFFFU) ret = -EOVERFLOW; retlen = ops.oobretlen; - if (copy_to_user(&((struct mtd_oob_buf *)argp)->length, - &retlen, sizeof(buf.length))) + if (copy_to_user(&user_buf->length, &retlen, sizeof(buf.length))) ret = -EFAULT; kfree(ops.oobbuf); @@ -579,29 +590,29 @@ static int mtd_ioctl(struct inode *inode, struct file *file, case MEMLOCK: { - struct erase_info_user info; + struct erase_info_user einfo; - if (copy_from_user(&info, argp, sizeof(info))) + if (copy_from_user(&einfo, argp, sizeof(einfo))) return -EFAULT; if (!mtd->lock) ret = -EOPNOTSUPP; else - ret = mtd->lock(mtd, info.start, info.length); + ret = mtd->lock(mtd, einfo.start, einfo.length); break; } case MEMUNLOCK: { - struct erase_info_user info; + struct erase_info_user einfo; - if (copy_from_user(&info, argp, sizeof(info))) + if (copy_from_user(&einfo, argp, sizeof(einfo))) return -EFAULT; if (!mtd->unlock) ret = -EOPNOTSUPP; else - ret = mtd->unlock(mtd, info.start, info.length); + ret = mtd->unlock(mtd, einfo.start, einfo.length); break; } @@ -701,15 +712,15 @@ static int mtd_ioctl(struct inode *inode, struct file *file, case OTPLOCK: { - struct otp_info info; + struct otp_info oinfo; if (mfi->mode != MTD_MODE_OTP_USER) return -EINVAL; - if (copy_from_user(&info, argp, sizeof(info))) + if (copy_from_user(&oinfo, argp, sizeof(oinfo))) return -EFAULT; if (!mtd->lock_user_prot_reg) return -EOPNOTSUPP; - ret = mtd->lock_user_prot_reg(mtd, info.start, info.length); + ret = mtd->lock_user_prot_reg(mtd, oinfo.start, oinfo.length); break; } #endif diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index d563dcd4b264..2972a5edb73d 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -6,8 +6,6 @@ * NAND support by Christian Gan <cgan@iders.ca> * * This code is GPL - * - * $Id: mtdconcat.c,v 1.11 2005/11/07 11:14:20 gleixner Exp $ */ #include <linux/kernel.h> diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index f7e7890e5bc6..a9d246949820 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -1,6 +1,4 @@ /* - * $Id: mtdcore.c,v 1.47 2005/11/07 11:14:20 gleixner Exp $ - * * Core registration and callback routines for MTD * drivers and users. * @@ -53,7 +51,7 @@ int add_mtd_device(struct mtd_info *mtd) for (i=0; i < MAX_MTD_DEVICES; i++) if (!mtd_table[i]) { - struct list_head *this; + struct mtd_notifier *not; mtd_table[i] = mtd; mtd->index = i; @@ -72,10 +70,8 @@ int add_mtd_device(struct mtd_info *mtd) DEBUG(0, "mtd: Giving out device %d to %s\n",i, mtd->name); /* No need to get a refcount on the module containing the notifier, since we hold the mtd_table_mutex */ - list_for_each(this, &mtd_notifiers) { - struct mtd_notifier *not = list_entry(this, struct mtd_notifier, list); + list_for_each_entry(not, &mtd_notifiers, list) not->add(mtd); - } mutex_unlock(&mtd_table_mutex); /* We _know_ we aren't being removed, because @@ -113,14 +109,12 @@ int del_mtd_device (struct mtd_info *mtd) mtd->index, mtd->name, mtd->usecount); ret = -EBUSY; } else { - struct list_head *this; + struct mtd_notifier *not; /* No need to get a refcount on the module containing the notifier, since we hold the mtd_table_mutex */ - list_for_each(this, &mtd_notifiers) { - struct mtd_notifier *not = list_entry(this, struct mtd_notifier, list); + list_for_each_entry(not, &mtd_notifiers, list) not->remove(mtd); - } mtd_table[mtd->index] = NULL; diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 07c701169344..edb90b58a9b1 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -5,8 +5,6 @@ * * This code is GPL * - * $Id: mtdpart.c,v 1.55 2005/11/07 11:14:20 gleixner Exp $ - * * 02-21-2002 Thomas Gleixner <gleixner@autronix.de> * added support for read_oob, write_oob */ @@ -46,8 +44,8 @@ struct mtd_part { * to the _real_ device. */ -static int part_read (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) +static int part_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); int res; @@ -56,7 +54,7 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len, len = 0; else if (from + len > mtd->size) len = mtd->size - from; - res = part->master->read (part->master, from + part->offset, + res = part->master->read(part->master, from + part->offset, len, retlen, buf); if (unlikely(res)) { if (res == -EUCLEAN) @@ -67,8 +65,8 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len, return res; } -static int part_point (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, void **virt, resource_size_t *phys) +static int part_point(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, void **virt, resource_size_t *phys) { struct mtd_part *part = PART(mtd); if (from >= mtd->size) @@ -87,7 +85,7 @@ static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len) } static int part_read_oob(struct mtd_info *mtd, loff_t from, - struct mtd_oob_ops *ops) + struct mtd_oob_ops *ops) { struct mtd_part *part = PART(mtd); int res; @@ -107,38 +105,38 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from, return res; } -static int part_read_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) +static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->read_user_prot_reg (part->master, from, + return part->master->read_user_prot_reg(part->master, from, len, retlen, buf); } -static int part_get_user_prot_info (struct mtd_info *mtd, - struct otp_info *buf, size_t len) +static int part_get_user_prot_info(struct mtd_info *mtd, + struct otp_info *buf, size_t len) { struct mtd_part *part = PART(mtd); - return part->master->get_user_prot_info (part->master, buf, len); + return part->master->get_user_prot_info(part->master, buf, len); } -static int part_read_fact_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) +static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->read_fact_prot_reg (part->master, from, + return part->master->read_fact_prot_reg(part->master, from, len, retlen, buf); } -static int part_get_fact_prot_info (struct mtd_info *mtd, - struct otp_info *buf, size_t len) +static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, + size_t len) { struct mtd_part *part = PART(mtd); - return part->master->get_fact_prot_info (part->master, buf, len); + return part->master->get_fact_prot_info(part->master, buf, len); } -static int part_write (struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) +static int part_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) { struct mtd_part *part = PART(mtd); if (!(mtd->flags & MTD_WRITEABLE)) @@ -147,12 +145,12 @@ static int part_write (struct mtd_info *mtd, loff_t to, size_t len, len = 0; else if (to + len > mtd->size) len = mtd->size - to; - return part->master->write (part->master, to + part->offset, + return part->master->write(part->master, to + part->offset, len, retlen, buf); } -static int part_panic_write (struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) +static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) { struct mtd_part *part = PART(mtd); if (!(mtd->flags & MTD_WRITEABLE)) @@ -161,12 +159,12 @@ static int part_panic_write (struct mtd_info *mtd, loff_t to, size_t len, len = 0; else if (to + len > mtd->size) len = mtd->size - to; - return part->master->panic_write (part->master, to + part->offset, + return part->master->panic_write(part->master, to + part->offset, len, retlen, buf); } static int part_write_oob(struct mtd_info *mtd, loff_t to, - struct mtd_oob_ops *ops) + struct mtd_oob_ops *ops) { struct mtd_part *part = PART(mtd); @@ -180,31 +178,32 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to, return part->master->write_oob(part->master, to + part->offset, ops); } -static int part_write_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) +static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len, size_t *retlen, u_char *buf) { struct mtd_part *part = PART(mtd); - return part->master->write_user_prot_reg (part->master, from, + return part->master->write_user_prot_reg(part->master, from, len, retlen, buf); } -static int part_lock_user_prot_reg (struct mtd_info *mtd, loff_t from, size_t len) +static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, + size_t len) { struct mtd_part *part = PART(mtd); - return part->master->lock_user_prot_reg (part->master, from, len); + return part->master->lock_user_prot_reg(part->master, from, len); } -static int part_writev (struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen) +static int part_writev(struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t *retlen) { struct mtd_part *part = PART(mtd); if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; - return part->master->writev (part->master, vecs, count, + return part->master->writev(part->master, vecs, count, to + part->offset, retlen); } -static int part_erase (struct mtd_info *mtd, struct erase_info *instr) +static int part_erase(struct mtd_info *mtd, struct erase_info *instr) { struct mtd_part *part = PART(mtd); int ret; @@ -236,7 +235,7 @@ void mtd_erase_callback(struct erase_info *instr) } EXPORT_SYMBOL_GPL(mtd_erase_callback); -static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len) +static int part_lock(struct mtd_info *mtd, loff_t ofs, size_t len) { struct mtd_part *part = PART(mtd); if ((len + ofs) > mtd->size) @@ -244,7 +243,7 @@ static int part_lock (struct mtd_info *mtd, loff_t ofs, size_t len) return part->master->lock(part->master, ofs + part->offset, len); } -static int part_unlock (struct mtd_info *mtd, loff_t ofs, size_t len) +static int part_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) { struct mtd_part *part = PART(mtd); if ((len + ofs) > mtd->size) @@ -270,7 +269,7 @@ static void part_resume(struct mtd_info *mtd) part->master->resume(part->master); } -static int part_block_isbad (struct mtd_info *mtd, loff_t ofs) +static int part_block_isbad(struct mtd_info *mtd, loff_t ofs) { struct mtd_part *part = PART(mtd); if (ofs >= mtd->size) @@ -279,7 +278,7 @@ static int part_block_isbad (struct mtd_info *mtd, loff_t ofs) return part->master->block_isbad(part->master, ofs); } -static int part_block_markbad (struct mtd_info *mtd, loff_t ofs) +static int part_block_markbad(struct mtd_info *mtd, loff_t ofs) { struct mtd_part *part = PART(mtd); int res; @@ -302,229 +301,237 @@ static int part_block_markbad (struct mtd_info *mtd, loff_t ofs) int del_mtd_partitions(struct mtd_info *master) { - struct list_head *node; - struct mtd_part *slave; + struct mtd_part *slave, *next; - for (node = mtd_partitions.next; - node != &mtd_partitions; - node = node->next) { - slave = list_entry(node, struct mtd_part, list); + list_for_each_entry_safe(slave, next, &mtd_partitions, list) if (slave->master == master) { - struct list_head *prev = node->prev; - __list_del(prev, node->next); - if(slave->registered) + list_del(&slave->list); + if (slave->registered) del_mtd_device(&slave->mtd); kfree(slave); - node = prev; } - } return 0; } +EXPORT_SYMBOL(del_mtd_partitions); -/* - * This function, given a master MTD object and a partition table, creates - * and registers slave MTD objects which are bound to the master according to - * the partition definitions. - * (Q: should we register the master MTD object as well?) - */ - -int add_mtd_partitions(struct mtd_info *master, - const struct mtd_partition *parts, - int nbparts) +static struct mtd_part *add_one_partition(struct mtd_info *master, + const struct mtd_partition *part, int partno, + u_int32_t cur_offset) { struct mtd_part *slave; - u_int32_t cur_offset = 0; - int i; - - printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); - - for (i = 0; i < nbparts; i++) { - /* allocate the partition structure */ - slave = kzalloc (sizeof(*slave), GFP_KERNEL); - if (!slave) { - printk ("memory allocation error while creating partitions for \"%s\"\n", - master->name); - del_mtd_partitions(master); - return -ENOMEM; - } - list_add(&slave->list, &mtd_partitions); + /* allocate the partition structure */ + slave = kzalloc(sizeof(*slave), GFP_KERNEL); + if (!slave) { + printk(KERN_ERR"memory allocation error while creating partitions for \"%s\"\n", + master->name); + del_mtd_partitions(master); + return NULL; + } + list_add(&slave->list, &mtd_partitions); - /* set up the MTD object for this partition */ - slave->mtd.type = master->type; - slave->mtd.flags = master->flags & ~parts[i].mask_flags; - slave->mtd.size = parts[i].size; - slave->mtd.writesize = master->writesize; - slave->mtd.oobsize = master->oobsize; - slave->mtd.oobavail = master->oobavail; - slave->mtd.subpage_sft = master->subpage_sft; + /* set up the MTD object for this partition */ + slave->mtd.type = master->type; + slave->mtd.flags = master->flags & ~part->mask_flags; + slave->mtd.size = part->size; + slave->mtd.writesize = master->writesize; + slave->mtd.oobsize = master->oobsize; + slave->mtd.oobavail = master->oobavail; + slave->mtd.subpage_sft = master->subpage_sft; - slave->mtd.name = parts[i].name; - slave->mtd.owner = master->owner; + slave->mtd.name = part->name; + slave->mtd.owner = master->owner; - slave->mtd.read = part_read; - slave->mtd.write = part_write; + slave->mtd.read = part_read; + slave->mtd.write = part_write; - if (master->panic_write) - slave->mtd.panic_write = part_panic_write; + if (master->panic_write) + slave->mtd.panic_write = part_panic_write; - if(master->point && master->unpoint){ - slave->mtd.point = part_point; - slave->mtd.unpoint = part_unpoint; - } + if (master->point && master->unpoint) { + slave->mtd.point = part_point; + slave->mtd.unpoint = part_unpoint; + } - if (master->read_oob) - slave->mtd.read_oob = part_read_oob; - if (master->write_oob) - slave->mtd.write_oob = part_write_oob; - if(master->read_user_prot_reg) - slave->mtd.read_user_prot_reg = part_read_user_prot_reg; - if(master->read_fact_prot_reg) - slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; - if(master->write_user_prot_reg) - slave->mtd.write_user_prot_reg = part_write_user_prot_reg; - if(master->lock_user_prot_reg) - slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; - if(master->get_user_prot_info) - slave->mtd.get_user_prot_info = part_get_user_prot_info; - if(master->get_fact_prot_info) - slave->mtd.get_fact_prot_info = part_get_fact_prot_info; - if (master->sync) - slave->mtd.sync = part_sync; - if (!i && master->suspend && master->resume) { - slave->mtd.suspend = part_suspend; - slave->mtd.resume = part_resume; + if (master->read_oob) + slave->mtd.read_oob = part_read_oob; + if (master->write_oob) + slave->mtd.write_oob = part_write_oob; + if (master->read_user_prot_reg) + slave->mtd.read_user_prot_reg = part_read_user_prot_reg; + if (master->read_fact_prot_reg) + slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; + if (master->write_user_prot_reg) + slave->mtd.write_user_prot_reg = part_write_user_prot_reg; + if (master->lock_user_prot_reg) + slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; + if (master->get_user_prot_info) + slave->mtd.get_user_prot_info = part_get_user_prot_info; + if (master->get_fact_prot_info) + slave->mtd.get_fact_prot_info = part_get_fact_prot_info; + if (master->sync) + slave->mtd.sync = part_sync; + if (!partno && master->suspend && master->resume) { + slave->mtd.suspend = part_suspend; + slave->mtd.resume = part_resume; + } + if (master->writev) + slave->mtd.writev = part_writev; + if (master->lock) + slave->mtd.lock = part_lock; + if (master->unlock) + slave->mtd.unlock = part_unlock; + if (master->block_isbad) + slave->mtd.block_isbad = part_block_isbad; + if (master->block_markbad) + slave->mtd.block_markbad = part_block_markbad; + slave->mtd.erase = part_erase; + slave->master = master; + slave->offset = part->offset; + slave->index = partno; + + if (slave->offset == MTDPART_OFS_APPEND) + slave->offset = cur_offset; + if (slave->offset == MTDPART_OFS_NXTBLK) { + slave->offset = cur_offset; + if ((cur_offset % master->erasesize) != 0) { + /* Round up to next erasesize */ + slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize; + printk(KERN_NOTICE "Moving partition %d: " + "0x%08x -> 0x%08x\n", partno, + cur_offset, slave->offset); } - if (master->writev) - slave->mtd.writev = part_writev; - if (master->lock) - slave->mtd.lock = part_lock; - if (master->unlock) - slave->mtd.unlock = part_unlock; - if (master->block_isbad) - slave->mtd.block_isbad = part_block_isbad; - if (master->block_markbad) - slave->mtd.block_markbad = part_block_markbad; - slave->mtd.erase = part_erase; - slave->master = master; - slave->offset = parts[i].offset; - slave->index = i; - - if (slave->offset == MTDPART_OFS_APPEND) - slave->offset = cur_offset; - if (slave->offset == MTDPART_OFS_NXTBLK) { - slave->offset = cur_offset; - if ((cur_offset % master->erasesize) != 0) { - /* Round up to next erasesize */ - slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize; - printk(KERN_NOTICE "Moving partition %d: " - "0x%08x -> 0x%08x\n", i, - cur_offset, slave->offset); + } + if (slave->mtd.size == MTDPART_SIZ_FULL) + slave->mtd.size = master->size - slave->offset; + + printk(KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset, + slave->offset + slave->mtd.size, slave->mtd.name); + + /* let's do some sanity checks */ + if (slave->offset >= master->size) { + /* let's register it anyway to preserve ordering */ + slave->offset = 0; + slave->mtd.size = 0; + printk(KERN_ERR"mtd: partition \"%s\" is out of reach -- disabled\n", + part->name); + goto out_register; + } + if (slave->offset + slave->mtd.size > master->size) { + slave->mtd.size = master->size - slave->offset; + printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n", + part->name, master->name, slave->mtd.size); + } + if (master->numeraseregions > 1) { + /* Deal with variable erase size stuff */ + int i, max = master->numeraseregions; + u32 end = slave->offset + slave->mtd.size; + struct mtd_erase_region_info *regions = master->eraseregions; + + /* Find the first erase regions which is part of this + * partition. */ + for (i = 0; i < max && regions[i].offset <= slave->offset; i++) + ; + /* The loop searched for the region _behind_ the first one */ + i--; + + /* Pick biggest erasesize */ + for (; i < max && regions[i].offset < end; i++) { + if (slave->mtd.erasesize < regions[i].erasesize) { + slave->mtd.erasesize = regions[i].erasesize; } } - if (slave->mtd.size == MTDPART_SIZ_FULL) - slave->mtd.size = master->size - slave->offset; - cur_offset = slave->offset + slave->mtd.size; + BUG_ON(slave->mtd.erasesize == 0); + } else { + /* Single erase size */ + slave->mtd.erasesize = master->erasesize; + } - printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset, - slave->offset + slave->mtd.size, slave->mtd.name); + if ((slave->mtd.flags & MTD_WRITEABLE) && + (slave->offset % slave->mtd.erasesize)) { + /* Doesn't start on a boundary of major erase size */ + /* FIXME: Let it be writable if it is on a boundary of + * _minor_ erase size though */ + slave->mtd.flags &= ~MTD_WRITEABLE; + printk(KERN_WARNING"mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n", + part->name); + } + if ((slave->mtd.flags & MTD_WRITEABLE) && + (slave->mtd.size % slave->mtd.erasesize)) { + slave->mtd.flags &= ~MTD_WRITEABLE; + printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n", + part->name); + } - /* let's do some sanity checks */ - if (slave->offset >= master->size) { - /* let's register it anyway to preserve ordering */ - slave->offset = 0; - slave->mtd.size = 0; - printk ("mtd: partition \"%s\" is out of reach -- disabled\n", - parts[i].name); - } - if (slave->offset + slave->mtd.size > master->size) { - slave->mtd.size = master->size - slave->offset; - printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n", - parts[i].name, master->name, slave->mtd.size); - } - if (master->numeraseregions>1) { - /* Deal with variable erase size stuff */ - int i; - struct mtd_erase_region_info *regions = master->eraseregions; - - /* Find the first erase regions which is part of this partition. */ - for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++) - ; - - for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) { - if (slave->mtd.erasesize < regions[i].erasesize) { - slave->mtd.erasesize = regions[i].erasesize; - } - } - } else { - /* Single erase size */ - slave->mtd.erasesize = master->erasesize; - } + slave->mtd.ecclayout = master->ecclayout; + if (master->block_isbad) { + uint32_t offs = 0; - if ((slave->mtd.flags & MTD_WRITEABLE) && - (slave->offset % slave->mtd.erasesize)) { - /* Doesn't start on a boundary of major erase size */ - /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */ - slave->mtd.flags &= ~MTD_WRITEABLE; - printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n", - parts[i].name); - } - if ((slave->mtd.flags & MTD_WRITEABLE) && - (slave->mtd.size % slave->mtd.erasesize)) { - slave->mtd.flags &= ~MTD_WRITEABLE; - printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n", - parts[i].name); + while (offs < slave->mtd.size) { + if (master->block_isbad(master, + offs + slave->offset)) + slave->mtd.ecc_stats.badblocks++; + offs += slave->mtd.erasesize; } + } - slave->mtd.ecclayout = master->ecclayout; - if (master->block_isbad) { - uint32_t offs = 0; +out_register: + if (part->mtdp) { + /* store the object pointer (caller may or may not register it*/ + *part->mtdp = &slave->mtd; + slave->registered = 0; + } else { + /* register our partition */ + add_mtd_device(&slave->mtd); + slave->registered = 1; + } + return slave; +} - while(offs < slave->mtd.size) { - if (master->block_isbad(master, - offs + slave->offset)) - slave->mtd.ecc_stats.badblocks++; - offs += slave->mtd.erasesize; - } - } +/* + * This function, given a master MTD object and a partition table, creates + * and registers slave MTD objects which are bound to the master according to + * the partition definitions. + * (Q: should we register the master MTD object as well?) + */ - if(parts[i].mtdp) - { /* store the object pointer (caller may or may not register it */ - *parts[i].mtdp = &slave->mtd; - slave->registered = 0; - } - else - { - /* register our partition */ - add_mtd_device(&slave->mtd); - slave->registered = 1; - } +int add_mtd_partitions(struct mtd_info *master, + const struct mtd_partition *parts, + int nbparts) +{ + struct mtd_part *slave; + u_int32_t cur_offset = 0; + int i; + + printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); + + for (i = 0; i < nbparts; i++) { + slave = add_one_partition(master, parts + i, i, cur_offset); + if (!slave) + return -ENOMEM; + cur_offset = slave->offset + slave->mtd.size; } return 0; } - EXPORT_SYMBOL(add_mtd_partitions); -EXPORT_SYMBOL(del_mtd_partitions); static DEFINE_SPINLOCK(part_parser_lock); static LIST_HEAD(part_parsers); static struct mtd_part_parser *get_partition_parser(const char *name) { - struct list_head *this; - void *ret = NULL; - spin_lock(&part_parser_lock); + struct mtd_part_parser *p, *ret = NULL; - list_for_each(this, &part_parsers) { - struct mtd_part_parser *p = list_entry(this, struct mtd_part_parser, list); + spin_lock(&part_parser_lock); + list_for_each_entry(p, &part_parsers, list) if (!strcmp(p->name, name) && try_module_get(p->owner)) { ret = p; break; } - } + spin_unlock(&part_parser_lock); return ret; @@ -538,6 +545,7 @@ int register_mtd_parser(struct mtd_part_parser *p) return 0; } +EXPORT_SYMBOL_GPL(register_mtd_parser); int deregister_mtd_parser(struct mtd_part_parser *p) { @@ -546,6 +554,7 @@ int deregister_mtd_parser(struct mtd_part_parser *p) spin_unlock(&part_parser_lock); return 0; } +EXPORT_SYMBOL_GPL(deregister_mtd_parser); int parse_mtd_partitions(struct mtd_info *master, const char **types, struct mtd_partition **pparts, unsigned long origin) @@ -573,7 +582,4 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types, } return ret; } - EXPORT_SYMBOL_GPL(parse_mtd_partitions); -EXPORT_SYMBOL_GPL(register_mtd_parser); -EXPORT_SYMBOL_GPL(deregister_mtd_parser); diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 5076faf9ca66..71406e517857 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -1,5 +1,4 @@ # drivers/mtd/nand/Kconfig -# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $ menuconfig MTD_NAND tristate "NAND Device Support" @@ -272,22 +271,23 @@ config MTD_NAND_CS553X If you say "m", the module will be called "cs553x_nand.ko". -config MTD_NAND_AT91 - bool "Support for NAND Flash / SmartMedia on AT91" - depends on ARCH_AT91 +config MTD_NAND_ATMEL + tristate "Support for NAND Flash / SmartMedia on AT91 and AVR32" + depends on ARCH_AT91 || AVR32 help Enables support for NAND Flash / Smart Media Card interface - on Atmel AT91 processors. + on Atmel AT91 and AVR32 processors. choice - prompt "ECC management for NAND Flash / SmartMedia on AT91" - depends on MTD_NAND_AT91 + prompt "ECC management for NAND Flash / SmartMedia on AT91 / AVR32" + depends on MTD_NAND_ATMEL -config MTD_NAND_AT91_ECC_HW +config MTD_NAND_ATMEL_ECC_HW bool "Hardware ECC" - depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 + depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 || AVR32 help - Uses hardware ECC provided by the at91sam9260/at91sam9263 chip - instead of software ECC. + Use hardware ECC instead of software ECC when the chip + supports it. + The hardware ECC controller is capable of single bit error correction and 2-bit random detection per page. @@ -297,16 +297,16 @@ config MTD_NAND_AT91_ECC_HW If unsure, say Y -config MTD_NAND_AT91_ECC_SOFT +config MTD_NAND_ATMEL_ECC_SOFT bool "Software ECC" help - Uses software ECC. + Use software ECC. NB : hardware and software ECC schemes are incompatible. If you switch from one to another, you'll have to erase your mtd partition. -config MTD_NAND_AT91_ECC_NONE +config MTD_NAND_ATMEL_ECC_NONE bool "No ECC (testing only, DANGEROUS)" depends on DEBUG_KERNEL help diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index a6e74a46992a..d772581de573 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -1,7 +1,6 @@ # # linux/drivers/nand/Makefile # -# $Id: Makefile.common,v 1.15 2004/11/26 12:28:22 dedekind Exp $ obj-$(CONFIG_MTD_NAND) += nand.o nand_ecc.o obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o @@ -24,7 +23,7 @@ obj-$(CONFIG_MTD_NAND_TS7250) += ts7250.o obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o obj-$(CONFIG_MTD_NAND_NDFC) += ndfc.o -obj-$(CONFIG_MTD_NAND_AT91) += at91_nand.o +obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c deleted file mode 100644 index 0adb287027a2..000000000000 --- a/drivers/mtd/nand/at91_nand.c +++ /dev/null @@ -1,594 +0,0 @@ -/* - * drivers/mtd/nand/at91_nand.c - * - * Copyright (C) 2003 Rick Bronson - * - * Derived from drivers/mtd/nand/autcpu12.c - * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) - * - * Derived from drivers/mtd/spia.c - * Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com) - * - * - * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263 - * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright (C) 2007 - * - * Derived from Das U-Boot source code - * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) - * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/partitions.h> - -#include <asm/io.h> -#include <asm/sizes.h> - -#include <asm/hardware.h> -#include <asm/arch/board.h> -#include <asm/arch/gpio.h> - -#ifdef CONFIG_MTD_NAND_AT91_ECC_HW -#define hard_ecc 1 -#else -#define hard_ecc 0 -#endif - -#ifdef CONFIG_MTD_NAND_AT91_ECC_NONE -#define no_ecc 1 -#else -#define no_ecc 0 -#endif - -/* Register access macros */ -#define ecc_readl(add, reg) \ - __raw_readl(add + AT91_ECC_##reg) -#define ecc_writel(add, reg, value) \ - __raw_writel((value), add + AT91_ECC_##reg) - -#include <asm/arch/at91_ecc.h> /* AT91SAM9260/3 ECC registers */ - -/* oob layout for large page size - * bad block info is on bytes 0 and 1 - * the bytes have to be consecutives to avoid - * several NAND_CMD_RNDOUT during read - */ -static struct nand_ecclayout at91_oobinfo_large = { - .eccbytes = 4, - .eccpos = {60, 61, 62, 63}, - .oobfree = { - {2, 58} - }, -}; - -/* oob layout for small page size - * bad block info is on bytes 4 and 5 - * the bytes have to be consecutives to avoid - * several NAND_CMD_RNDOUT during read - */ -static struct nand_ecclayout at91_oobinfo_small = { - .eccbytes = 4, - .eccpos = {0, 1, 2, 3}, - .oobfree = { - {6, 10} - }, -}; - -struct at91_nand_host { - struct nand_chip nand_chip; - struct mtd_info mtd; - void __iomem *io_base; - struct at91_nand_data *board; - struct device *dev; - void __iomem *ecc; -}; - -/* - * Enable NAND. - */ -static void at91_nand_enable(struct at91_nand_host *host) -{ - if (host->board->enable_pin) - at91_set_gpio_value(host->board->enable_pin, 0); -} - -/* - * Disable NAND. - */ -static void at91_nand_disable(struct at91_nand_host *host) -{ - if (host->board->enable_pin) - at91_set_gpio_value(host->board->enable_pin, 1); -} - -/* - * Hardware specific access to control-lines - */ -static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) -{ - struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; - - if (ctrl & NAND_CTRL_CHANGE) { - if (ctrl & NAND_NCE) - at91_nand_enable(host); - else - at91_nand_disable(host); - } - if (cmd == NAND_CMD_NONE) - return; - - if (ctrl & NAND_CLE) - writeb(cmd, host->io_base + (1 << host->board->cle)); - else - writeb(cmd, host->io_base + (1 << host->board->ale)); -} - -/* - * Read the Device Ready pin. - */ -static int at91_nand_device_ready(struct mtd_info *mtd) -{ - struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; - - return at91_get_gpio_value(host->board->rdy_pin); -} - -/* - * write oob for small pages - */ -static int at91_nand_write_oob_512(struct mtd_info *mtd, - struct nand_chip *chip, int page) -{ - int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; - int eccsize = chip->ecc.size, length = mtd->oobsize; - int len, pos, status = 0; - const uint8_t *bufpoi = chip->oob_poi; - - pos = eccsize + chunk; - - chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page); - len = min_t(int, length, chunk); - chip->write_buf(mtd, bufpoi, len); - bufpoi += len; - length -= len; - if (length > 0) - chip->write_buf(mtd, bufpoi, length); - - chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); - status = chip->waitfunc(mtd, chip); - - return status & NAND_STATUS_FAIL ? -EIO : 0; - -} - -/* - * read oob for small pages - */ -static int at91_nand_read_oob_512(struct mtd_info *mtd, - struct nand_chip *chip, int page, int sndcmd) -{ - if (sndcmd) { - chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); - sndcmd = 0; - } - chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); - return sndcmd; -} - -/* - * Calculate HW ECC - * - * function called after a write - * - * mtd: MTD block structure - * dat: raw data (unused) - * ecc_code: buffer for ECC - */ -static int at91_nand_calculate(struct mtd_info *mtd, - const u_char *dat, unsigned char *ecc_code) -{ - struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; - uint32_t *eccpos = nand_chip->ecc.layout->eccpos; - unsigned int ecc_value; - - /* get the first 2 ECC bytes */ - ecc_value = ecc_readl(host->ecc, PR); - - ecc_code[eccpos[0]] = ecc_value & 0xFF; - ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF; - - /* get the last 2 ECC bytes */ - ecc_value = ecc_readl(host->ecc, NPR) & AT91_ECC_NPARITY; - - ecc_code[eccpos[2]] = ecc_value & 0xFF; - ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF; - - return 0; -} - -/* - * HW ECC read page function - * - * mtd: mtd info structure - * chip: nand chip info structure - * buf: buffer to store read data - */ -static int at91_nand_read_page(struct mtd_info *mtd, - struct nand_chip *chip, uint8_t *buf) -{ - int eccsize = chip->ecc.size; - int eccbytes = chip->ecc.bytes; - uint32_t *eccpos = chip->ecc.layout->eccpos; - uint8_t *p = buf; - uint8_t *oob = chip->oob_poi; - uint8_t *ecc_pos; - int stat; - - /* read the page */ - chip->read_buf(mtd, p, eccsize); - - /* move to ECC position if needed */ - if (eccpos[0] != 0) { - /* This only works on large pages - * because the ECC controller waits for - * NAND_CMD_RNDOUTSTART after the - * NAND_CMD_RNDOUT. - * anyway, for small pages, the eccpos[0] == 0 - */ - chip->cmdfunc(mtd, NAND_CMD_RNDOUT, - mtd->writesize + eccpos[0], -1); - } - - /* the ECC controller needs to read the ECC just after the data */ - ecc_pos = oob + eccpos[0]; - chip->read_buf(mtd, ecc_pos, eccbytes); - - /* check if there's an error */ - stat = chip->ecc.correct(mtd, p, oob, NULL); - - if (stat < 0) - mtd->ecc_stats.failed++; - else - mtd->ecc_stats.corrected += stat; - - /* get back to oob start (end of page) */ - chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); - - /* read the oob */ - chip->read_buf(mtd, oob, mtd->oobsize); - - return 0; -} - -/* - * HW ECC Correction - * - * function called after a read - * - * mtd: MTD block structure - * dat: raw data read from the chip - * read_ecc: ECC from the chip (unused) - * isnull: unused - * - * Detect and correct a 1 bit error for a page - */ -static int at91_nand_correct(struct mtd_info *mtd, u_char *dat, - u_char *read_ecc, u_char *isnull) -{ - struct nand_chip *nand_chip = mtd->priv; - struct at91_nand_host *host = nand_chip->priv; - unsigned int ecc_status; - unsigned int ecc_word, ecc_bit; - - /* get the status from the Status Register */ - ecc_status = ecc_readl(host->ecc, SR); - - /* if there's no error */ - if (likely(!(ecc_status & AT91_ECC_RECERR))) - return 0; - - /* get error bit offset (4 bits) */ - ecc_bit = ecc_readl(host->ecc, PR) & AT91_ECC_BITADDR; - /* get word address (12 bits) */ - ecc_word = ecc_readl(host->ecc, PR) & AT91_ECC_WORDADDR; - ecc_word >>= 4; - - /* if there are multiple errors */ - if (ecc_status & AT91_ECC_MULERR) { - /* check if it is a freshly erased block - * (filled with 0xff) */ - if ((ecc_bit == AT91_ECC_BITADDR) - && (ecc_word == (AT91_ECC_WORDADDR >> 4))) { - /* the block has just been erased, return OK */ - return 0; - } - /* it doesn't seems to be a freshly - * erased block. - * We can't correct so many errors */ - dev_dbg(host->dev, "at91_nand : multiple errors detected." - " Unable to correct.\n"); - return -EIO; - } - - /* if there's a single bit error : we can correct it */ - if (ecc_status & AT91_ECC_ECCERR) { - /* there's nothing much to do here. - * the bit error is on the ECC itself. - */ - dev_dbg(host->dev, "at91_nand : one bit error on ECC code." - " Nothing to correct\n"); - return 0; - } - - dev_dbg(host->dev, "at91_nand : one bit error on data." - " (word offset in the page :" - " 0x%x bit offset : 0x%x)\n", - ecc_word, ecc_bit); - /* correct the error */ - if (nand_chip->options & NAND_BUSWIDTH_16) { - /* 16 bits words */ - ((unsigned short *) dat)[ecc_word] ^= (1 << ecc_bit); - } else { - /* 8 bits words */ - dat[ecc_word] ^= (1 << ecc_bit); - } - dev_dbg(host->dev, "at91_nand : error corrected\n"); - return 1; -} - -/* - * Enable HW ECC : unsused - */ -static void at91_nand_hwctl(struct mtd_info *mtd, int mode) { ; } - -#ifdef CONFIG_MTD_PARTITIONS -static const char *part_probes[] = { "cmdlinepart", NULL }; -#endif - -/* - * Probe for the NAND device. - */ -static int __init at91_nand_probe(struct platform_device *pdev) -{ - struct at91_nand_host *host; - struct mtd_info *mtd; - struct nand_chip *nand_chip; - struct resource *regs; - struct resource *mem; - int res; - -#ifdef CONFIG_MTD_PARTITIONS - struct mtd_partition *partitions = NULL; - int num_partitions = 0; -#endif - - /* Allocate memory for the device structure (and zero it) */ - host = kzalloc(sizeof(struct at91_nand_host), GFP_KERNEL); - if (!host) { - printk(KERN_ERR "at91_nand: failed to allocate device structure.\n"); - return -ENOMEM; - } - - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem) { - printk(KERN_ERR "at91_nand: can't get I/O resource mem\n"); - return -ENXIO; - } - - host->io_base = ioremap(mem->start, mem->end - mem->start + 1); - if (host->io_base == NULL) { - printk(KERN_ERR "at91_nand: ioremap failed\n"); - kfree(host); - return -EIO; - } - - mtd = &host->mtd; - nand_chip = &host->nand_chip; - host->board = pdev->dev.platform_data; - host->dev = &pdev->dev; - - nand_chip->priv = host; /* link the private data structures */ - mtd->priv = nand_chip; - mtd->owner = THIS_MODULE; - - /* Set address of NAND IO lines */ - nand_chip->IO_ADDR_R = host->io_base; - nand_chip->IO_ADDR_W = host->io_base; - nand_chip->cmd_ctrl = at91_nand_cmd_ctrl; - - if (host->board->rdy_pin) - nand_chip->dev_ready = at91_nand_device_ready; - - regs = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!regs && hard_ecc) { - printk(KERN_ERR "at91_nand: can't get I/O resource " - "regs\nFalling back on software ECC\n"); - } - - nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */ - if (no_ecc) - nand_chip->ecc.mode = NAND_ECC_NONE; - if (hard_ecc && regs) { - host->ecc = ioremap(regs->start, regs->end - regs->start + 1); - if (host->ecc == NULL) { - printk(KERN_ERR "at91_nand: ioremap failed\n"); - res = -EIO; - goto err_ecc_ioremap; - } - nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME; - nand_chip->ecc.calculate = at91_nand_calculate; - nand_chip->ecc.correct = at91_nand_correct; - nand_chip->ecc.hwctl = at91_nand_hwctl; - nand_chip->ecc.read_page = at91_nand_read_page; - nand_chip->ecc.bytes = 4; - nand_chip->ecc.prepad = 0; - nand_chip->ecc.postpad = 0; - } - - nand_chip->chip_delay = 20; /* 20us command delay time */ - - if (host->board->bus_width_16) /* 16-bit bus width */ - nand_chip->options |= NAND_BUSWIDTH_16; - - platform_set_drvdata(pdev, host); - at91_nand_enable(host); - - if (host->board->det_pin) { - if (at91_get_gpio_value(host->board->det_pin)) { - printk ("No SmartMedia card inserted.\n"); - res = ENXIO; - goto out; - } - } - - /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1)) { - res = -ENXIO; - goto out; - } - - if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) { - /* ECC is calculated for the whole page (1 step) */ - nand_chip->ecc.size = mtd->writesize; - - /* set ECC page size and oob layout */ - switch (mtd->writesize) { - case 512: - nand_chip->ecc.layout = &at91_oobinfo_small; - nand_chip->ecc.read_oob = at91_nand_read_oob_512; - nand_chip->ecc.write_oob = at91_nand_write_oob_512; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_528); - break; - case 1024: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_1056); - break; - case 2048: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_2112); - break; - case 4096: - nand_chip->ecc.layout = &at91_oobinfo_large; - ecc_writel(host->ecc, MR, AT91_ECC_PAGESIZE_4224); - break; - default: - /* page size not handled by HW ECC */ - /* switching back to soft ECC */ - nand_chip->ecc.mode = NAND_ECC_SOFT; - nand_chip->ecc.calculate = NULL; - nand_chip->ecc.correct = NULL; - nand_chip->ecc.hwctl = NULL; - nand_chip->ecc.read_page = NULL; - nand_chip->ecc.postpad = 0; - nand_chip->ecc.prepad = 0; - nand_chip->ecc.bytes = 0; - break; - } - } - - /* second phase scan */ - if (nand_scan_tail(mtd)) { - res = -ENXIO; - goto out; - } - -#ifdef CONFIG_MTD_PARTITIONS -#ifdef CONFIG_MTD_CMDLINE_PARTS - mtd->name = "at91_nand"; - num_partitions = parse_mtd_partitions(mtd, part_probes, - &partitions, 0); -#endif - if (num_partitions <= 0 && host->board->partition_info) - partitions = host->board->partition_info(mtd->size, - &num_partitions); - - if ((!partitions) || (num_partitions == 0)) { - printk(KERN_ERR "at91_nand: No parititions defined, or unsupported device.\n"); - res = ENXIO; - goto release; - } - - res = add_mtd_partitions(mtd, partitions, num_partitions); -#else - res = add_mtd_device(mtd); -#endif - - if (!res) - return res; - -#ifdef CONFIG_MTD_PARTITIONS -release: -#endif - nand_release(mtd); - -out: - iounmap(host->ecc); - -err_ecc_ioremap: - at91_nand_disable(host); - platform_set_drvdata(pdev, NULL); - iounmap(host->io_base); - kfree(host); - return res; -} - -/* - * Remove a NAND device. - */ -static int __devexit at91_nand_remove(struct platform_device *pdev) -{ - struct at91_nand_host *host = platform_get_drvdata(pdev); - struct mtd_info *mtd = &host->mtd; - - nand_release(mtd); - - at91_nand_disable(host); - - iounmap(host->io_base); - iounmap(host->ecc); - kfree(host); - - return 0; -} - -static struct platform_driver at91_nand_driver = { - .probe = at91_nand_probe, - .remove = at91_nand_remove, - .driver = { - .name = "at91_nand", - .owner = THIS_MODULE, - }, -}; - -static int __init at91_nand_init(void) -{ - return platform_driver_register(&at91_nand_driver); -} - - -static void __exit at91_nand_exit(void) -{ - platform_driver_unregister(&at91_nand_driver); -} - - -module_init(at91_nand_init); -module_exit(at91_nand_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Rick Bronson"); -MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91RM9200 / AT91SAM9"); -MODULE_ALIAS("platform:at91_nand"); diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c new file mode 100644 index 000000000000..99aec46e2145 --- /dev/null +++ b/drivers/mtd/nand/atmel_nand.c @@ -0,0 +1,650 @@ +/* + * Copyright (C) 2003 Rick Bronson + * + * Derived from drivers/mtd/nand/autcpu12.c + * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) + * + * Derived from drivers/mtd/spia.c + * Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com) + * + * + * Add Hardware ECC support for AT91SAM9260 / AT91SAM9263 + * Richard Genoud (richard.genoud@gmail.com), Adeneo Copyright (C) 2007 + * + * Derived from Das U-Boot source code + * (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c) + * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> + +#include <linux/gpio.h> +#include <linux/io.h> + +#include <asm/arch/board.h> +#include <asm/arch/cpu.h> + +#ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW +#define hard_ecc 1 +#else +#define hard_ecc 0 +#endif + +#ifdef CONFIG_MTD_NAND_ATMEL_ECC_NONE +#define no_ecc 1 +#else +#define no_ecc 0 +#endif + +/* Register access macros */ +#define ecc_readl(add, reg) \ + __raw_readl(add + ATMEL_ECC_##reg) +#define ecc_writel(add, reg, value) \ + __raw_writel((value), add + ATMEL_ECC_##reg) + +#include "atmel_nand_ecc.h" /* Hardware ECC registers */ + +/* oob layout for large page size + * bad block info is on bytes 0 and 1 + * the bytes have to be consecutives to avoid + * several NAND_CMD_RNDOUT during read + */ +static struct nand_ecclayout atmel_oobinfo_large = { + .eccbytes = 4, + .eccpos = {60, 61, 62, 63}, + .oobfree = { + {2, 58} + }, +}; + +/* oob layout for small page size + * bad block info is on bytes 4 and 5 + * the bytes have to be consecutives to avoid + * several NAND_CMD_RNDOUT during read + */ +static struct nand_ecclayout atmel_oobinfo_small = { + .eccbytes = 4, + .eccpos = {0, 1, 2, 3}, + .oobfree = { + {6, 10} + }, +}; + +struct atmel_nand_host { + struct nand_chip nand_chip; + struct mtd_info mtd; + void __iomem *io_base; + struct atmel_nand_data *board; + struct device *dev; + void __iomem *ecc; +}; + +/* + * Enable NAND. + */ +static void atmel_nand_enable(struct atmel_nand_host *host) +{ + if (host->board->enable_pin) + gpio_set_value(host->board->enable_pin, 0); +} + +/* + * Disable NAND. + */ +static void atmel_nand_disable(struct atmel_nand_host *host) +{ + if (host->board->enable_pin) + gpio_set_value(host->board->enable_pin, 1); +} + +/* + * Hardware specific access to control-lines + */ +static void atmel_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) +{ + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + if (ctrl & NAND_NCE) + atmel_nand_enable(host); + else + atmel_nand_disable(host); + } + if (cmd == NAND_CMD_NONE) + return; + + if (ctrl & NAND_CLE) + writeb(cmd, host->io_base + (1 << host->board->cle)); + else + writeb(cmd, host->io_base + (1 << host->board->ale)); +} + +/* + * Read the Device Ready pin. + */ +static int atmel_nand_device_ready(struct mtd_info *mtd) +{ + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + + return gpio_get_value(host->board->rdy_pin); +} + +/* + * Minimal-overhead PIO for data access. + */ +static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_readsb(nand_chip->IO_ADDR_R, buf, len); +} + +static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2); +} + +static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_writesb(nand_chip->IO_ADDR_W, buf, len); +} + +static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct nand_chip *nand_chip = mtd->priv; + + __raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2); +} + +/* + * write oob for small pages + */ +static int atmel_nand_write_oob_512(struct mtd_info *mtd, + struct nand_chip *chip, int page) +{ + int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad; + int eccsize = chip->ecc.size, length = mtd->oobsize; + int len, pos, status = 0; + const uint8_t *bufpoi = chip->oob_poi; + + pos = eccsize + chunk; + + chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page); + len = min_t(int, length, chunk); + chip->write_buf(mtd, bufpoi, len); + bufpoi += len; + length -= len; + if (length > 0) + chip->write_buf(mtd, bufpoi, length); + + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + status = chip->waitfunc(mtd, chip); + + return status & NAND_STATUS_FAIL ? -EIO : 0; + +} + +/* + * read oob for small pages + */ +static int atmel_nand_read_oob_512(struct mtd_info *mtd, + struct nand_chip *chip, int page, int sndcmd) +{ + if (sndcmd) { + chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); + sndcmd = 0; + } + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + return sndcmd; +} + +/* + * Calculate HW ECC + * + * function called after a write + * + * mtd: MTD block structure + * dat: raw data (unused) + * ecc_code: buffer for ECC + */ +static int atmel_nand_calculate(struct mtd_info *mtd, + const u_char *dat, unsigned char *ecc_code) +{ + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + uint32_t *eccpos = nand_chip->ecc.layout->eccpos; + unsigned int ecc_value; + + /* get the first 2 ECC bytes */ + ecc_value = ecc_readl(host->ecc, PR); + + ecc_code[eccpos[0]] = ecc_value & 0xFF; + ecc_code[eccpos[1]] = (ecc_value >> 8) & 0xFF; + + /* get the last 2 ECC bytes */ + ecc_value = ecc_readl(host->ecc, NPR) & ATMEL_ECC_NPARITY; + + ecc_code[eccpos[2]] = ecc_value & 0xFF; + ecc_code[eccpos[3]] = (ecc_value >> 8) & 0xFF; + + return 0; +} + +/* + * HW ECC read page function + * + * mtd: mtd info structure + * chip: nand chip info structure + * buf: buffer to store read data + */ +static int atmel_nand_read_page(struct mtd_info *mtd, + struct nand_chip *chip, uint8_t *buf) +{ + int eccsize = chip->ecc.size; + int eccbytes = chip->ecc.bytes; + uint32_t *eccpos = chip->ecc.layout->eccpos; + uint8_t *p = buf; + uint8_t *oob = chip->oob_poi; + uint8_t *ecc_pos; + int stat; + + /* + * Errata: ALE is incorrectly wired up to the ECC controller + * on the AP7000, so it will include the address cycles in the + * ECC calculation. + * + * Workaround: Reset the parity registers before reading the + * actual data. + */ + if (cpu_is_at32ap7000()) { + struct atmel_nand_host *host = chip->priv; + ecc_writel(host->ecc, CR, ATMEL_ECC_RST); + } + + /* read the page */ + chip->read_buf(mtd, p, eccsize); + + /* move to ECC position if needed */ + if (eccpos[0] != 0) { + /* This only works on large pages + * because the ECC controller waits for + * NAND_CMD_RNDOUTSTART after the + * NAND_CMD_RNDOUT. + * anyway, for small pages, the eccpos[0] == 0 + */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, + mtd->writesize + eccpos[0], -1); + } + + /* the ECC controller needs to read the ECC just after the data */ + ecc_pos = oob + eccpos[0]; + chip->read_buf(mtd, ecc_pos, eccbytes); + + /* check if there's an error */ + stat = chip->ecc.correct(mtd, p, oob, NULL); + + if (stat < 0) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; + + /* get back to oob start (end of page) */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); + + /* read the oob */ + chip->read_buf(mtd, oob, mtd->oobsize); + + return 0; +} + +/* + * HW ECC Correction + * + * function called after a read + * + * mtd: MTD block structure + * dat: raw data read from the chip + * read_ecc: ECC from the chip (unused) + * isnull: unused + * + * Detect and correct a 1 bit error for a page + */ +static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *isnull) +{ + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + unsigned int ecc_status; + unsigned int ecc_word, ecc_bit; + + /* get the status from the Status Register */ + ecc_status = ecc_readl(host->ecc, SR); + + /* if there's no error */ + if (likely(!(ecc_status & ATMEL_ECC_RECERR))) + return 0; + + /* get error bit offset (4 bits) */ + ecc_bit = ecc_readl(host->ecc, PR) & ATMEL_ECC_BITADDR; + /* get word address (12 bits) */ + ecc_word = ecc_readl(host->ecc, PR) & ATMEL_ECC_WORDADDR; + ecc_word >>= 4; + + /* if there are multiple errors */ + if (ecc_status & ATMEL_ECC_MULERR) { + /* check if it is a freshly erased block + * (filled with 0xff) */ + if ((ecc_bit == ATMEL_ECC_BITADDR) + && (ecc_word == (ATMEL_ECC_WORDADDR >> 4))) { + /* the block has just been erased, return OK */ + return 0; + } + /* it doesn't seems to be a freshly + * erased block. + * We can't correct so many errors */ + dev_dbg(host->dev, "atmel_nand : multiple errors detected." + " Unable to correct.\n"); + return -EIO; + } + + /* if there's a single bit error : we can correct it */ + if (ecc_status & ATMEL_ECC_ECCERR) { + /* there's nothing much to do here. + * the bit error is on the ECC itself. + */ + dev_dbg(host->dev, "atmel_nand : one bit error on ECC code." + " Nothing to correct\n"); + return 0; + } + + dev_dbg(host->dev, "atmel_nand : one bit error on data." + " (word offset in the page :" + " 0x%x bit offset : 0x%x)\n", + ecc_word, ecc_bit); + /* correct the error */ + if (nand_chip->options & NAND_BUSWIDTH_16) { + /* 16 bits words */ + ((unsigned short *) dat)[ecc_word] ^= (1 << ecc_bit); + } else { + /* 8 bits words */ + dat[ecc_word] ^= (1 << ecc_bit); + } + dev_dbg(host->dev, "atmel_nand : error corrected\n"); + return 1; +} + +/* + * Enable HW ECC : unused on most chips + */ +static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) +{ + if (cpu_is_at32ap7000()) { + struct nand_chip *nand_chip = mtd->priv; + struct atmel_nand_host *host = nand_chip->priv; + ecc_writel(host->ecc, CR, ATMEL_ECC_RST); + } +} + +#ifdef CONFIG_MTD_PARTITIONS +static const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + +/* + * Probe for the NAND device. + */ +static int __init atmel_nand_probe(struct platform_device *pdev) +{ + struct atmel_nand_host *host; + struct mtd_info *mtd; + struct nand_chip *nand_chip; + struct resource *regs; + struct resource *mem; + int res; + +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *partitions = NULL; + int num_partitions = 0; +#endif + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + printk(KERN_ERR "atmel_nand: can't get I/O resource mem\n"); + return -ENXIO; + } + + /* Allocate memory for the device structure (and zero it) */ + host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL); + if (!host) { + printk(KERN_ERR "atmel_nand: failed to allocate device structure.\n"); + return -ENOMEM; + } + + host->io_base = ioremap(mem->start, mem->end - mem->start + 1); + if (host->io_base == NULL) { + printk(KERN_ERR "atmel_nand: ioremap failed\n"); + res = -EIO; + goto err_nand_ioremap; + } + + mtd = &host->mtd; + nand_chip = &host->nand_chip; + host->board = pdev->dev.platform_data; + host->dev = &pdev->dev; + + nand_chip->priv = host; /* link the private data structures */ + mtd->priv = nand_chip; + mtd->owner = THIS_MODULE; + + /* Set address of NAND IO lines */ + nand_chip->IO_ADDR_R = host->io_base; + nand_chip->IO_ADDR_W = host->io_base; + nand_chip->cmd_ctrl = atmel_nand_cmd_ctrl; + + if (host->board->rdy_pin) + nand_chip->dev_ready = atmel_nand_device_ready; + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!regs && hard_ecc) { + printk(KERN_ERR "atmel_nand: can't get I/O resource " + "regs\nFalling back on software ECC\n"); + } + + nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */ + if (no_ecc) + nand_chip->ecc.mode = NAND_ECC_NONE; + if (hard_ecc && regs) { + host->ecc = ioremap(regs->start, regs->end - regs->start + 1); + if (host->ecc == NULL) { + printk(KERN_ERR "atmel_nand: ioremap failed\n"); + res = -EIO; + goto err_ecc_ioremap; + } + nand_chip->ecc.mode = NAND_ECC_HW_SYNDROME; + nand_chip->ecc.calculate = atmel_nand_calculate; + nand_chip->ecc.correct = atmel_nand_correct; + nand_chip->ecc.hwctl = atmel_nand_hwctl; + nand_chip->ecc.read_page = atmel_nand_read_page; + nand_chip->ecc.bytes = 4; + nand_chip->ecc.prepad = 0; + nand_chip->ecc.postpad = 0; + } + + nand_chip->chip_delay = 20; /* 20us command delay time */ + + if (host->board->bus_width_16) { /* 16-bit bus width */ + nand_chip->options |= NAND_BUSWIDTH_16; + nand_chip->read_buf = atmel_read_buf16; + nand_chip->write_buf = atmel_write_buf16; + } else { + nand_chip->read_buf = atmel_read_buf; + nand_chip->write_buf = atmel_write_buf; + } + + platform_set_drvdata(pdev, host); + atmel_nand_enable(host); + + if (host->board->det_pin) { + if (gpio_get_value(host->board->det_pin)) { + printk("No SmartMedia card inserted.\n"); + res = ENXIO; + goto err_no_card; + } + } + + /* first scan to find the device and get the page size */ + if (nand_scan_ident(mtd, 1)) { + res = -ENXIO; + goto err_scan_ident; + } + + if (nand_chip->ecc.mode == NAND_ECC_HW_SYNDROME) { + /* ECC is calculated for the whole page (1 step) */ + nand_chip->ecc.size = mtd->writesize; + + /* set ECC page size and oob layout */ + switch (mtd->writesize) { + case 512: + nand_chip->ecc.layout = &atmel_oobinfo_small; + nand_chip->ecc.read_oob = atmel_nand_read_oob_512; + nand_chip->ecc.write_oob = atmel_nand_write_oob_512; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_528); + break; + case 1024: + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_1056); + break; + case 2048: + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_2112); + break; + case 4096: + nand_chip->ecc.layout = &atmel_oobinfo_large; + ecc_writel(host->ecc, MR, ATMEL_ECC_PAGESIZE_4224); + break; + default: + /* page size not handled by HW ECC */ + /* switching back to soft ECC */ + nand_chip->ecc.mode = NAND_ECC_SOFT; + nand_chip->ecc.calculate = NULL; + nand_chip->ecc.correct = NULL; + nand_chip->ecc.hwctl = NULL; + nand_chip->ecc.read_page = NULL; + nand_chip->ecc.postpad = 0; + nand_chip->ecc.prepad = 0; + nand_chip->ecc.bytes = 0; + break; + } + } + + /* second phase scan */ + if (nand_scan_tail(mtd)) { + res = -ENXIO; + goto err_scan_tail; + } + +#ifdef CONFIG_MTD_PARTITIONS +#ifdef CONFIG_MTD_CMDLINE_PARTS + mtd->name = "atmel_nand"; + num_partitions = parse_mtd_partitions(mtd, part_probes, + &partitions, 0); +#endif + if (num_partitions <= 0 && host->board->partition_info) + partitions = host->board->partition_info(mtd->size, + &num_partitions); + + if ((!partitions) || (num_partitions == 0)) { + printk(KERN_ERR "atmel_nand: No parititions defined, or unsupported device.\n"); + res = ENXIO; + goto err_no_partitions; + } + + res = add_mtd_partitions(mtd, partitions, num_partitions); +#else + res = add_mtd_device(mtd); +#endif + + if (!res) + return res; + +#ifdef CONFIG_MTD_PARTITIONS +err_no_partitions: +#endif + nand_release(mtd); +err_scan_tail: +err_scan_ident: +err_no_card: + atmel_nand_disable(host); + platform_set_drvdata(pdev, NULL); + if (host->ecc) + iounmap(host->ecc); +err_ecc_ioremap: + iounmap(host->io_base); +err_nand_ioremap: + kfree(host); + return res; +} + +/* + * Remove a NAND device. + */ +static int __exit atmel_nand_remove(struct platform_device *pdev) +{ + struct atmel_nand_host *host = platform_get_drvdata(pdev); + struct mtd_info *mtd = &host->mtd; + + nand_release(mtd); + + atmel_nand_disable(host); + + if (host->ecc) + iounmap(host->ecc); + iounmap(host->io_base); + kfree(host); + + return 0; +} + +static struct platform_driver atmel_nand_driver = { + .remove = __exit_p(atmel_nand_remove), + .driver = { + .name = "atmel_nand", + .owner = THIS_MODULE, + }, +}; + +static int __init atmel_nand_init(void) +{ + return platform_driver_probe(&atmel_nand_driver, atmel_nand_probe); +} + + +static void __exit atmel_nand_exit(void) +{ + platform_driver_unregister(&atmel_nand_driver); +} + + +module_init(atmel_nand_init); +module_exit(atmel_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Rick Bronson"); +MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32"); +MODULE_ALIAS("platform:atmel_nand"); diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h new file mode 100644 index 000000000000..1ee7f993db1c --- /dev/null +++ b/drivers/mtd/nand/atmel_nand_ecc.h @@ -0,0 +1,36 @@ +/* + * Error Corrected Code Controller (ECC) - System peripherals regsters. + * Based on AT91SAM9260 datasheet revision B. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef ATMEL_NAND_ECC_H +#define ATMEL_NAND_ECC_H + +#define ATMEL_ECC_CR 0x00 /* Control register */ +#define ATMEL_ECC_RST (1 << 0) /* Reset parity */ + +#define ATMEL_ECC_MR 0x04 /* Mode register */ +#define ATMEL_ECC_PAGESIZE (3 << 0) /* Page Size */ +#define ATMEL_ECC_PAGESIZE_528 (0) +#define ATMEL_ECC_PAGESIZE_1056 (1) +#define ATMEL_ECC_PAGESIZE_2112 (2) +#define ATMEL_ECC_PAGESIZE_4224 (3) + +#define ATMEL_ECC_SR 0x08 /* Status register */ +#define ATMEL_ECC_RECERR (1 << 0) /* Recoverable Error */ +#define ATMEL_ECC_ECCERR (1 << 1) /* ECC Single Bit Error */ +#define ATMEL_ECC_MULERR (1 << 2) /* Multiple Errors */ + +#define ATMEL_ECC_PR 0x0c /* Parity register */ +#define ATMEL_ECC_BITADDR (0xf << 0) /* Bit Error Address */ +#define ATMEL_ECC_WORDADDR (0xfff << 4) /* Word Error Address */ + +#define ATMEL_ECC_NPR 0x10 /* NParity register */ +#define ATMEL_ECC_NPARITY (0xffff << 0) /* NParity */ + +#endif diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index 09e421a96893..761946ea45b1 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -3,8 +3,6 @@ * * Copyright (C) 2004 Embedded Edge, LLC * - * $Id: au1550nd.c,v 1.13 2005/11/07 11:14:30 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. @@ -604,8 +602,6 @@ module_init(au1xxx_nand_init); */ static void __exit au1550_cleanup(void) { - struct nand_chip *this = (struct nand_chip *)&au1550_mtd[1]; - /* Release resources, unregister device */ nand_release(au1550_mtd); diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c index dd38011ee0b7..553dd7e9b41c 100644 --- a/drivers/mtd/nand/autcpu12.c +++ b/drivers/mtd/nand/autcpu12.c @@ -6,8 +6,6 @@ * Derived from drivers/mtd/spia.c * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) * - * $Id: autcpu12.c,v 1.23 2005/11/07 11:14:30 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index da6ceaa80ba1..95345d051579 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -626,10 +626,12 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, { struct mtd_info *mtd; struct cafe_priv *cafe; - struct mtd_partition *parts; uint32_t ctrl; - int nr_parts; int err = 0; +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *parts; + int nr_parts; +#endif /* Very old versions shared the same PCI ident for all three functions on the chip. Verify the class too... */ diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c index cb663ef245d5..fc8529bedfdf 100644 --- a/drivers/mtd/nand/cmx270_nand.c +++ b/drivers/mtd/nand/cmx270_nand.c @@ -20,9 +20,11 @@ #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> +#include <linux/gpio.h> #include <asm/io.h> #include <asm/irq.h> +#include <asm/mach-types.h> #include <asm/arch/hardware.h> #include <asm/arch/pxa-regs.h> @@ -30,20 +32,6 @@ #define GPIO_NAND_CS (11) #define GPIO_NAND_RB (89) -/* This macro needed to ensure in-order operation of GPIO and local - * bus. Without both asm command and dummy uncached read there're - * states when NAND access is broken. I've looked for such macro(s) in - * include/asm-arm but found nothing approptiate. - * dmac_clean_range is close, but is makes cache invalidation - * unnecessary here and it cannot be used in module - */ -#define DRAIN_WB() \ - do { \ - unsigned char dummy; \ - asm volatile ("mcr p15, 0, r0, c7, c10, 4":::"r0"); \ - dummy=*((unsigned char*)UNCACHED_ADDR); \ - } while(0) - /* MTD structure for CM-X270 board */ static struct mtd_info *cmx270_nand_mtd; @@ -103,14 +91,14 @@ static int cmx270_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) static inline void nand_cs_on(void) { - GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS); + gpio_set_value(GPIO_NAND_CS, 0); } static void nand_cs_off(void) { - DRAIN_WB(); + dsb(); - GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS); + gpio_set_value(GPIO_NAND_CS, 1); } /* @@ -122,7 +110,7 @@ static void cmx270_hwcontrol(struct mtd_info *mtd, int dat, struct nand_chip* this = mtd->priv; unsigned int nandaddr = (unsigned int)this->IO_ADDR_W; - DRAIN_WB(); + dsb(); if (ctrl & NAND_CTRL_CHANGE) { if ( ctrl & NAND_ALE ) @@ -139,12 +127,12 @@ static void cmx270_hwcontrol(struct mtd_info *mtd, int dat, nand_cs_off(); } - DRAIN_WB(); + dsb(); this->IO_ADDR_W = (void __iomem*)nandaddr; if (dat != NAND_CMD_NONE) writel((dat << 16), this->IO_ADDR_W); - DRAIN_WB(); + dsb(); } /* @@ -152,9 +140,9 @@ static void cmx270_hwcontrol(struct mtd_info *mtd, int dat, */ static int cmx270_device_ready(struct mtd_info *mtd) { - DRAIN_WB(); + dsb(); - return (GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB)); + return (gpio_get_value(GPIO_NAND_RB)); } /* @@ -168,20 +156,40 @@ static int cmx270_init(void) int mtd_parts_nb = 0; int ret; + if (!machine_is_armcore()) + return -ENODEV; + + ret = gpio_request(GPIO_NAND_CS, "NAND CS"); + if (ret) { + pr_warning("CM-X270: failed to request NAND CS gpio\n"); + return ret; + } + + gpio_direction_output(GPIO_NAND_CS, 1); + + ret = gpio_request(GPIO_NAND_RB, "NAND R/B"); + if (ret) { + pr_warning("CM-X270: failed to request NAND R/B gpio\n"); + goto err_gpio_request; + } + + gpio_direction_input(GPIO_NAND_RB); + /* Allocate memory for MTD device structure and private data */ cmx270_nand_mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); if (!cmx270_nand_mtd) { - printk("Unable to allocate CM-X270 NAND MTD device structure.\n"); - return -ENOMEM; + pr_debug("Unable to allocate CM-X270 NAND MTD device structure.\n"); + ret = -ENOMEM; + goto err_kzalloc; } cmx270_nand_io = ioremap(PXA_CS1_PHYS, 12); if (!cmx270_nand_io) { - printk("Unable to ioremap NAND device\n"); + pr_debug("Unable to ioremap NAND device\n"); ret = -EINVAL; - goto err1; + goto err_ioremap; } /* Get pointer to private data */ @@ -209,9 +217,9 @@ static int cmx270_init(void) /* Scan to find existence of the device */ if (nand_scan (cmx270_nand_mtd, 1)) { - printk(KERN_NOTICE "No NAND device\n"); + pr_notice("No NAND device\n"); ret = -ENXIO; - goto err2; + goto err_scan; } #ifdef CONFIG_MTD_CMDLINE_PARTS @@ -229,18 +237,22 @@ static int cmx270_init(void) } /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); + pr_notice("Using %s partition definition\n", part_type); ret = add_mtd_partitions(cmx270_nand_mtd, mtd_parts, mtd_parts_nb); if (ret) - goto err2; + goto err_scan; /* Return happy */ return 0; -err2: +err_scan: iounmap(cmx270_nand_io); -err1: +err_ioremap: kfree(cmx270_nand_mtd); +err_kzalloc: + gpio_free(GPIO_NAND_RB); +err_gpio_request: + gpio_free(GPIO_NAND_CS); return ret; @@ -255,6 +267,9 @@ static void cmx270_cleanup(void) /* Release resources, unregister device */ nand_release(cmx270_nand_mtd); + gpio_free(GPIO_NAND_RB); + gpio_free(GPIO_NAND_CS); + iounmap(cmx270_nand_io); /* Free the MTD device structure */ diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index 0e72153b3297..765d4f0f7c86 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -15,8 +15,6 @@ * converted to the generic Reed-Solomon library by Thomas Gleixner <tglx@linutronix.de> * * Interface to generic NAND code for M-Systems DiskOnChip devices - * - * $Id: diskonchip.c,v 1.55 2005/11/07 11:14:30 gleixner Exp $ */ #include <linux/kernel.h> @@ -54,8 +52,6 @@ static unsigned long __initdata doc_locations[] = { 0xe0000, 0xe2000, 0xe4000, 0xe6000, 0xe8000, 0xea000, 0xec000, 0xee000, #endif /* CONFIG_MTD_DOCPROBE_HIGH */ -#elif defined(__PPC__) - 0xe4000000, #else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c index ba67bbec20d3..387e4352903e 100644 --- a/drivers/mtd/nand/edb7312.c +++ b/drivers/mtd/nand/edb7312.c @@ -6,8 +6,6 @@ * Derived from drivers/mtd/nand/autcpu12.c * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) * - * $Id: edb7312.c,v 1.12 2005/11/07 11:14:30 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c index bed87290decc..ced14b5294d5 100644 --- a/drivers/mtd/nand/excite_nandflash.c +++ b/drivers/mtd/nand/excite_nandflash.c @@ -209,7 +209,7 @@ static int __init excite_nand_probe(struct device *dev) if (likely(!scan_res)) { DEBUG(MTD_DEBUG_LEVEL2, "%s: register partitions\n", module_id); add_mtd_partitions(&drvdata->board_mtd, partition_info, - sizeof partition_info / sizeof partition_info[0]); + ARRAY_SIZE(partition_info)); } else { iounmap(drvdata->regs); kfree(drvdata); diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 4b69aacdf5ca..9dff51351f4f 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -89,7 +89,6 @@ static struct nand_ecclayout fsl_elbc_oob_sp_eccm0 = { .eccbytes = 3, .eccpos = {6, 7, 8}, .oobfree = { {0, 5}, {9, 7} }, - .oobavail = 12, }; /* Small Page FLASH with FMR[ECCM] = 1 */ @@ -97,7 +96,6 @@ static struct nand_ecclayout fsl_elbc_oob_sp_eccm1 = { .eccbytes = 3, .eccpos = {8, 9, 10}, .oobfree = { {0, 5}, {6, 2}, {11, 5} }, - .oobavail = 12, }; /* Large Page FLASH with FMR[ECCM] = 0 */ @@ -105,7 +103,6 @@ static struct nand_ecclayout fsl_elbc_oob_lp_eccm0 = { .eccbytes = 12, .eccpos = {6, 7, 8, 22, 23, 24, 38, 39, 40, 54, 55, 56}, .oobfree = { {1, 5}, {9, 13}, {25, 13}, {41, 13}, {57, 7} }, - .oobavail = 48, }; /* Large Page FLASH with FMR[ECCM] = 1 */ @@ -113,7 +110,48 @@ static struct nand_ecclayout fsl_elbc_oob_lp_eccm1 = { .eccbytes = 12, .eccpos = {8, 9, 10, 24, 25, 26, 40, 41, 42, 56, 57, 58}, .oobfree = { {1, 7}, {11, 13}, {27, 13}, {43, 13}, {59, 5} }, - .oobavail = 48, +}; + +/* + * fsl_elbc_oob_lp_eccm* specify that LP NAND's OOB free area starts at offset + * 1, so we have to adjust bad block pattern. This pattern should be used for + * x8 chips only. So far hardware does not support x16 chips anyway. + */ +static u8 scan_ff_pattern[] = { 0xff, }; + +static struct nand_bbt_descr largepage_memorybased = { + .options = 0, + .offs = 0, + .len = 1, + .pattern = scan_ff_pattern, +}; + +/* + * ELBC may use HW ECC, so that OOB offsets, that NAND core uses for bbt, + * interfere with ECC positions, that's why we implement our own descriptors. + * OOB {11, 5}, works for both SP and LP chips, with ECCM = 1 and ECCM = 0. + */ +static u8 bbt_pattern[] = {'B', 'b', 't', '0' }; +static u8 mirror_pattern[] = {'1', 't', 'b', 'B' }; + +static struct nand_bbt_descr bbt_main_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | + NAND_BBT_2BIT | NAND_BBT_VERSION, + .offs = 11, + .len = 4, + .veroffs = 15, + .maxblocks = 4, + .pattern = bbt_pattern, +}; + +static struct nand_bbt_descr bbt_mirror_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | + NAND_BBT_2BIT | NAND_BBT_VERSION, + .offs = 11, + .len = 4, + .veroffs = 15, + .maxblocks = 4, + .pattern = mirror_pattern, }; /*=================================*/ @@ -687,8 +725,7 @@ static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) chip->ecc.layout = (priv->fmr & FMR_ECCM) ? &fsl_elbc_oob_lp_eccm1 : &fsl_elbc_oob_lp_eccm0; - mtd->ecclayout = chip->ecc.layout; - mtd->oobavail = chip->ecc.layout->oobavail; + chip->badblock_pattern = &largepage_memorybased; } } else { dev_err(ctrl->dev, @@ -752,8 +789,12 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) chip->cmdfunc = fsl_elbc_cmdfunc; chip->waitfunc = fsl_elbc_wait; + chip->bbt_td = &bbt_main_descr; + chip->bbt_md = &bbt_mirror_descr; + /* set up nand options */ - chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR; + chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR | + NAND_USE_FLASH_BBT; chip->controller = &ctrl->controller; chip->priv = priv; @@ -795,8 +836,8 @@ static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv) return 0; } -static int fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, - struct device_node *node) +static int __devinit fsl_elbc_chip_probe(struct fsl_elbc_ctrl *ctrl, + struct device_node *node) { struct fsl_lbc_regs __iomem *lbc = ctrl->regs; struct fsl_elbc_mtd *priv; @@ -917,7 +958,7 @@ static int __devinit fsl_elbc_ctrl_init(struct fsl_elbc_ctrl *ctrl) return 0; } -static int __devexit fsl_elbc_ctrl_remove(struct of_device *ofdev) +static int fsl_elbc_ctrl_remove(struct of_device *ofdev) { struct fsl_elbc_ctrl *ctrl = dev_get_drvdata(&ofdev->dev); int i; @@ -1041,7 +1082,7 @@ static struct of_platform_driver fsl_elbc_ctrl_driver = { }, .match_table = fsl_elbc_match, .probe = fsl_elbc_ctrl_probe, - .remove = __devexit_p(fsl_elbc_ctrl_remove), + .remove = fsl_elbc_ctrl_remove, }; static int __init fsl_elbc_init(void) diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c index 2d585d2d090c..9e59de501c2e 100644 --- a/drivers/mtd/nand/h1910.c +++ b/drivers/mtd/nand/h1910.c @@ -7,8 +7,6 @@ * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) * - * $Id: h1910.c,v 1.6 2005/11/07 11:14:30 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ba1bdf787323..d1129bae6c27 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -798,6 +798,87 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, } /** + * nand_read_subpage - [REPLACABLE] software ecc based sub-page read function + * @mtd: mtd info structure + * @chip: nand chip info structure + * @dataofs offset of requested data within the page + * @readlen data length + * @buf: buffer to store read data + */ +static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi) +{ + int start_step, end_step, num_steps; + uint32_t *eccpos = chip->ecc.layout->eccpos; + uint8_t *p; + int data_col_addr, i, gaps = 0; + int datafrag_len, eccfrag_len, aligned_len, aligned_pos; + int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1; + + /* Column address wihin the page aligned to ECC size (256bytes). */ + start_step = data_offs / chip->ecc.size; + end_step = (data_offs + readlen - 1) / chip->ecc.size; + num_steps = end_step - start_step + 1; + + /* Data size aligned to ECC ecc.size*/ + datafrag_len = num_steps * chip->ecc.size; + eccfrag_len = num_steps * chip->ecc.bytes; + + data_col_addr = start_step * chip->ecc.size; + /* If we read not a page aligned data */ + if (data_col_addr != 0) + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1); + + p = bufpoi + data_col_addr; + chip->read_buf(mtd, p, datafrag_len); + + /* Calculate ECC */ + for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) + chip->ecc.calculate(mtd, p, &chip->buffers->ecccalc[i]); + + /* The performance is faster if to position offsets + according to ecc.pos. Let make sure here that + there are no gaps in ecc positions */ + for (i = 0; i < eccfrag_len - 1; i++) { + if (eccpos[i + start_step * chip->ecc.bytes] + 1 != + eccpos[i + start_step * chip->ecc.bytes + 1]) { + gaps = 1; + break; + } + } + if (gaps) { + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + } else { + /* send the command to read the particular ecc bytes */ + /* take care about buswidth alignment in read_buf */ + aligned_pos = eccpos[start_step * chip->ecc.bytes] & ~(busw - 1); + aligned_len = eccfrag_len; + if (eccpos[start_step * chip->ecc.bytes] & (busw - 1)) + aligned_len++; + if (eccpos[(start_step + num_steps) * chip->ecc.bytes] & (busw - 1)) + aligned_len++; + + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize + aligned_pos, -1); + chip->read_buf(mtd, &chip->oob_poi[aligned_pos], aligned_len); + } + + for (i = 0; i < eccfrag_len; i++) + chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + start_step * chip->ecc.bytes]]; + + p = bufpoi + data_col_addr; + for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) { + int stat; + + stat = chip->ecc.correct(mtd, p, &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]); + if (stat == -1) + mtd->ecc_stats.failed++; + else + mtd->ecc_stats.corrected += stat; + } + return 0; +} + +/** * nand_read_page_hwecc - [REPLACABLE] hardware ecc based page read function * @mtd: mtd info structure * @chip: nand chip info structure @@ -994,6 +1075,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, /* Now read the page into the buffer */ if (unlikely(ops->mode == MTD_OOB_RAW)) ret = chip->ecc.read_page_raw(mtd, chip, bufpoi); + else if (!aligned && NAND_SUBPAGE_READ(chip) && !oob) + ret = chip->ecc.read_subpage(mtd, chip, col, bytes, bufpoi); else ret = chip->ecc.read_page(mtd, chip, bufpoi); if (ret < 0) @@ -1001,7 +1084,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, /* Transfer not aligned data */ if (!aligned) { - chip->pagebuf = realpage; + if (!NAND_SUBPAGE_READ(chip) && !oob) + chip->pagebuf = realpage; memcpy(buf, chip->buffers->databuf + col, bytes); } @@ -2521,6 +2605,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.calculate = nand_calculate_ecc; chip->ecc.correct = nand_correct_data; chip->ecc.read_page = nand_read_page_swecc; + chip->ecc.read_subpage = nand_read_subpage; chip->ecc.write_page = nand_write_page_swecc; chip->ecc.read_oob = nand_read_oob_std; chip->ecc.write_oob = nand_write_oob_std; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 5e121ceaa598..0b1c48595f12 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -6,8 +6,6 @@ * * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de) * - * $Id: nand_bbt.c,v 1.36 2005/11/07 11:14:30 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c index 9003a135e050..918a806a8471 100644 --- a/drivers/mtd/nand/nand_ecc.c +++ b/drivers/mtd/nand/nand_ecc.c @@ -9,8 +9,6 @@ * * Copyright (C) 2006 Thomas Gleixner <tglx@linutronix.de> * - * $Id: nand_ecc.c,v 1.15 2005/11/07 11:14:30 gleixner Exp $ - * * This file is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 or (at your option) any diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index a3e3ab0185d5..69ee2c90eb0b 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -3,8 +3,6 @@ * * Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de) * - * $Id: nand_ids.c,v 1.16 2005/11/07 11:14:31 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index bb885d1fcab5..ecd70e2504f6 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -21,8 +21,6 @@ * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA - * - * $Id: nandsim.c,v 1.8 2005/03/19 15:33:56 dedekind Exp $ */ #include <linux/init.h> @@ -39,6 +37,7 @@ #include <linux/delay.h> #include <linux/list.h> #include <linux/random.h> +#include <asm/div64.h> /* Default simulator parameters values */ #if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE) || \ @@ -298,11 +297,11 @@ struct nandsim { /* NAND flash "geometry" */ struct nandsin_geometry { - uint32_t totsz; /* total flash size, bytes */ + uint64_t totsz; /* total flash size, bytes */ uint32_t secsz; /* flash sector (erase block) size, bytes */ uint pgsz; /* NAND flash page size, bytes */ uint oobsz; /* page OOB area size, bytes */ - uint32_t totszoob; /* total flash size including OOB, bytes */ + uint64_t totszoob; /* total flash size including OOB, bytes */ uint pgszoob; /* page size including OOB , bytes*/ uint secszoob; /* sector size including OOB, bytes */ uint pgnum; /* total number of pages */ @@ -459,6 +458,12 @@ static char *get_partition_name(int i) return kstrdup(buf, GFP_KERNEL); } +static u_int64_t divide(u_int64_t n, u_int32_t d) +{ + do_div(n, d); + return n; +} + /* * Initialize the nandsim structure. * @@ -469,8 +474,8 @@ static int init_nandsim(struct mtd_info *mtd) struct nand_chip *chip = (struct nand_chip *)mtd->priv; struct nandsim *ns = (struct nandsim *)(chip->priv); int i, ret = 0; - u_int32_t remains; - u_int32_t next_offset; + u_int64_t remains; + u_int64_t next_offset; if (NS_IS_INITIALIZED(ns)) { NS_ERR("init_nandsim: nandsim is already initialized\n"); @@ -487,8 +492,8 @@ static int init_nandsim(struct mtd_info *mtd) ns->geom.oobsz = mtd->oobsize; ns->geom.secsz = mtd->erasesize; ns->geom.pgszoob = ns->geom.pgsz + ns->geom.oobsz; - ns->geom.pgnum = ns->geom.totsz / ns->geom.pgsz; - ns->geom.totszoob = ns->geom.totsz + ns->geom.pgnum * ns->geom.oobsz; + ns->geom.pgnum = divide(ns->geom.totsz, ns->geom.pgsz); + ns->geom.totszoob = ns->geom.totsz + (uint64_t)ns->geom.pgnum * ns->geom.oobsz; ns->geom.secshift = ffs(ns->geom.secsz) - 1; ns->geom.pgshift = chip->page_shift; ns->geom.oobshift = ffs(ns->geom.oobsz) - 1; @@ -511,7 +516,7 @@ static int init_nandsim(struct mtd_info *mtd) } if (ns->options & OPT_SMALLPAGE) { - if (ns->geom.totsz < (32 << 20)) { + if (ns->geom.totsz <= (32 << 20)) { ns->geom.pgaddrbytes = 3; ns->geom.secaddrbytes = 2; } else { @@ -537,15 +542,16 @@ static int init_nandsim(struct mtd_info *mtd) remains = ns->geom.totsz; next_offset = 0; for (i = 0; i < parts_num; ++i) { - unsigned long part = parts[i]; - if (!part || part > remains / ns->geom.secsz) { + u_int64_t part_sz = (u_int64_t)parts[i] * ns->geom.secsz; + + if (!part_sz || part_sz > remains) { NS_ERR("bad partition size.\n"); ret = -EINVAL; goto error; } ns->partitions[i].name = get_partition_name(i); ns->partitions[i].offset = next_offset; - ns->partitions[i].size = part * ns->geom.secsz; + ns->partitions[i].size = part_sz; next_offset += ns->partitions[i].size; remains -= ns->partitions[i].size; } @@ -573,7 +579,7 @@ static int init_nandsim(struct mtd_info *mtd) if (ns->busw == 16) NS_WARN("16-bit flashes support wasn't tested\n"); - printk("flash size: %u MiB\n", ns->geom.totsz >> 20); + printk("flash size: %llu MiB\n", ns->geom.totsz >> 20); printk("page size: %u bytes\n", ns->geom.pgsz); printk("OOB area size: %u bytes\n", ns->geom.oobsz); printk("sector size: %u KiB\n", ns->geom.secsz >> 10); @@ -583,7 +589,7 @@ static int init_nandsim(struct mtd_info *mtd) printk("bits in sector size: %u\n", ns->geom.secshift); printk("bits in page size: %u\n", ns->geom.pgshift); printk("bits in OOB size: %u\n", ns->geom.oobshift); - printk("flash size with OOB: %u KiB\n", ns->geom.totszoob >> 10); + printk("flash size with OOB: %llu KiB\n", ns->geom.totszoob >> 10); printk("page address bytes: %u\n", ns->geom.pgaddrbytes); printk("sector address bytes: %u\n", ns->geom.secaddrbytes); printk("options: %#x\n", ns->options); @@ -825,7 +831,7 @@ static int setup_wear_reporting(struct mtd_info *mtd) if (!rptwear) return 0; - wear_eb_count = mtd->size / mtd->erasesize; + wear_eb_count = divide(mtd->size, mtd->erasesize); mem = wear_eb_count * sizeof(unsigned long); if (mem / sizeof(unsigned long) != wear_eb_count) { NS_ERR("Too many erase blocks for wear reporting\n"); @@ -2013,7 +2019,7 @@ static int __init ns_init_module(void) } if (overridesize) { - u_int32_t new_size = nsmtd->erasesize << overridesize; + u_int64_t new_size = (u_int64_t)nsmtd->erasesize << overridesize; if (new_size >> overridesize != nsmtd->erasesize) { NS_ERR("overridesize is too big\n"); goto err_exit; @@ -2021,7 +2027,8 @@ static int __init ns_init_module(void) /* N.B. This relies on nand_scan not doing anything with the size before we change it */ nsmtd->size = new_size; chip->chipsize = new_size; - chip->chip_shift = ffs(new_size) - 1; + chip->chip_shift = ffs(nsmtd->erasesize) + overridesize - 1; + chip->pagemask = (chip->chipsize >> chip->page_shift) - 1; } if ((retval = setup_wear_reporting(nsmtd)) != 0) diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 59e05a1c50cf..ee2ac3948cd8 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -85,6 +85,9 @@ static int __init orion_nand_probe(struct platform_device *pdev) nc->cmd_ctrl = orion_nand_cmd_ctrl; nc->ecc.mode = NAND_ECC_SOFT; + if (board->chip_delay) + nc->chip_delay = board->chip_delay; + if (board->width == 16) nc->options |= NAND_BUSWIDTH_16; diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c index 082073acf20f..cc8658431851 100644 --- a/drivers/mtd/nand/ppchameleonevb.c +++ b/drivers/mtd/nand/ppchameleonevb.c @@ -6,8 +6,6 @@ * Derived from drivers/mtd/nand/edb7312.c * * - * $Id: ppchameleonevb.c,v 1.7 2005/11/07 11:14:31 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c index 26f88215bc47..a033c4cd8e16 100644 --- a/drivers/mtd/nand/rtc_from4.c +++ b/drivers/mtd/nand/rtc_from4.c @@ -6,8 +6,6 @@ * Derived from drivers/mtd/nand/spia.c * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) * - * $Id: rtc_from4.c,v 1.10 2005/11/07 11:14:31 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index b34a460ab679..556139ed1fdf 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -1,26 +1,10 @@ /* linux/drivers/mtd/nand/s3c2410.c * - * Copyright (c) 2004,2005 Simtec Electronics - * http://www.simtec.co.uk/products/SWLINUX/ + * Copyright © 2004-2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ * Ben Dooks <ben@simtec.co.uk> * - * Samsung S3C2410/S3C240 NAND driver - * - * Changelog: - * 21-Sep-2004 BJD Initial version - * 23-Sep-2004 BJD Multiple device support - * 28-Sep-2004 BJD Fixed ECC placement for Hardware mode - * 12-Oct-2004 BJD Fixed errors in use of platform data - * 18-Feb-2005 BJD Fix sparse errors - * 14-Mar-2005 BJD Applied tglx's code reduction patch - * 02-May-2005 BJD Fixed s3c2440 support - * 02-May-2005 BJD Reduced hwcontrol decode - * 20-Jun-2005 BJD Updated s3c2440 support, fixed timing bug - * 08-Jul-2005 BJD Fix OOPS when no platform data supplied - * 20-Oct-2005 BJD Fix timing calculation bug - * 14-Jan-2006 BJD Allow clock to be stopped when idle - * - * $Id: s3c2410.c,v 1.23 2006/04/01 18:06:29 bjd Exp $ + * Samsung S3C2410/S3C2440/S3C2412 NAND driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -52,6 +36,7 @@ #include <linux/err.h> #include <linux/slab.h> #include <linux/clk.h> +#include <linux/cpufreq.h> #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> @@ -120,8 +105,13 @@ struct s3c2410_nand_info { int sel_bit; int mtd_count; unsigned long save_sel; + unsigned long clk_rate; enum s3c_cpu_type cpu_type; + +#ifdef CONFIG_CPU_FREQ + struct notifier_block freq_transition; +#endif }; /* conversion functions */ @@ -179,17 +169,18 @@ static int s3c_nand_calc_rate(int wanted, unsigned long clk, int max) /* controller setup */ -static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, - struct platform_device *pdev) +static int s3c2410_nand_setrate(struct s3c2410_nand_info *info) { - struct s3c2410_platform_nand *plat = to_nand_plat(pdev); - unsigned long clkrate = clk_get_rate(info->clk); + struct s3c2410_platform_nand *plat = info->platform; int tacls_max = (info->cpu_type == TYPE_S3C2412) ? 8 : 4; int tacls, twrph0, twrph1; - unsigned long cfg = 0; + unsigned long clkrate = clk_get_rate(info->clk); + unsigned long set, cfg, mask; + unsigned long flags; /* calculate the timing information for the controller */ + info->clk_rate = clkrate; clkrate /= 1000; /* turn clock into kHz for ease of use */ if (plat != NULL) { @@ -211,28 +202,69 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, dev_info(info->device, "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n", tacls, to_ns(tacls, clkrate), twrph0, to_ns(twrph0, clkrate), twrph1, to_ns(twrph1, clkrate)); + switch (info->cpu_type) { + case TYPE_S3C2410: + mask = (S3C2410_NFCONF_TACLS(3) | + S3C2410_NFCONF_TWRPH0(7) | + S3C2410_NFCONF_TWRPH1(7)); + set = S3C2410_NFCONF_EN; + set |= S3C2410_NFCONF_TACLS(tacls - 1); + set |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); + set |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); + break; + + case TYPE_S3C2440: + case TYPE_S3C2412: + mask = (S3C2410_NFCONF_TACLS(tacls_max - 1) | + S3C2410_NFCONF_TWRPH0(7) | + S3C2410_NFCONF_TWRPH1(7)); + + set = S3C2440_NFCONF_TACLS(tacls - 1); + set |= S3C2440_NFCONF_TWRPH0(twrph0 - 1); + set |= S3C2440_NFCONF_TWRPH1(twrph1 - 1); + break; + + default: + /* keep compiler happy */ + mask = 0; + set = 0; + BUG(); + } + + dev_dbg(info->device, "NF_CONF is 0x%lx\n", cfg); + + local_irq_save(flags); + + cfg = readl(info->regs + S3C2410_NFCONF); + cfg &= ~mask; + cfg |= set; + writel(cfg, info->regs + S3C2410_NFCONF); + + local_irq_restore(flags); + + return 0; +} + +static int s3c2410_nand_inithw(struct s3c2410_nand_info *info) +{ + int ret; + + ret = s3c2410_nand_setrate(info); + if (ret < 0) + return ret; + switch (info->cpu_type) { case TYPE_S3C2410: - cfg = S3C2410_NFCONF_EN; - cfg |= S3C2410_NFCONF_TACLS(tacls - 1); - cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); - cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); + default: break; case TYPE_S3C2440: case TYPE_S3C2412: - cfg = S3C2440_NFCONF_TACLS(tacls - 1); - cfg |= S3C2440_NFCONF_TWRPH0(twrph0 - 1); - cfg |= S3C2440_NFCONF_TWRPH1(twrph1 - 1); - /* enable the controller and de-assert nFCE */ writel(S3C2440_NFCONT_ENABLE, info->regs + S3C2440_NFCONT); } - dev_dbg(info->device, "NF_CONF is 0x%lx\n", cfg); - - writel(cfg, info->regs + S3C2410_NFCONF); return 0; } @@ -513,6 +545,52 @@ static void s3c2440_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int writesl(info->regs + S3C2440_NFDATA, buf, len / 4); } +/* cpufreq driver support */ + +#ifdef CONFIG_CPU_FREQ + +static int s3c2410_nand_cpufreq_transition(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct s3c2410_nand_info *info; + unsigned long newclk; + + info = container_of(nb, struct s3c2410_nand_info, freq_transition); + newclk = clk_get_rate(info->clk); + + if ((val == CPUFREQ_POSTCHANGE && newclk < info->clk_rate) || + (val == CPUFREQ_PRECHANGE && newclk > info->clk_rate)) { + s3c2410_nand_setrate(info); + } + + return 0; +} + +static inline int s3c2410_nand_cpufreq_register(struct s3c2410_nand_info *info) +{ + info->freq_transition.notifier_call = s3c2410_nand_cpufreq_transition; + + return cpufreq_register_notifier(&info->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +} + +static inline void s3c2410_nand_cpufreq_deregister(struct s3c2410_nand_info *info) +{ + cpufreq_unregister_notifier(&info->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); +} + +#else +static inline int s3c2410_nand_cpufreq_register(struct s3c2410_nand_info *info) +{ + return 0; +} + +static inline void s3c2410_nand_cpufreq_deregister(struct s3c2410_nand_info *info) +{ +} +#endif + /* device management functions */ static int s3c2410_nand_remove(struct platform_device *pdev) @@ -524,9 +602,10 @@ static int s3c2410_nand_remove(struct platform_device *pdev) if (info == NULL) return 0; - /* first thing we need to do is release all our mtds - * and their partitions, then go through freeing the - * resources used + s3c2410_nand_cpufreq_deregister(info); + + /* Release all our mtds and their partitions, then go through + * freeing the resources used */ if (info->mtds != NULL) { @@ -691,7 +770,8 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, { struct nand_chip *chip = &nmtd->chip; - printk("%s: chip %p: %d\n", __func__, chip, chip->page_shift); + dev_dbg(info->device, "chip %p => page shift %d\n", + chip, chip->page_shift); if (hardware_ecc) { /* change the behaviour depending on wether we are using @@ -784,7 +864,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, /* initialise the hardware */ - err = s3c2410_nand_inithw(info, pdev); + err = s3c2410_nand_inithw(info); if (err != 0) goto exit_error; @@ -827,6 +907,12 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, sets++; } + err = s3c2410_nand_cpufreq_register(info); + if (err < 0) { + dev_err(&pdev->dev, "failed to init cpufreq support\n"); + goto exit_error; + } + if (allow_clk_stop(info)) { dev_info(&pdev->dev, "clock idle support enabled\n"); clk_disable(info->clk); @@ -874,7 +960,7 @@ static int s3c24xx_nand_resume(struct platform_device *dev) if (info) { clk_enable(info->clk); - s3c2410_nand_inithw(info, dev); + s3c2410_nand_inithw(info); /* Restore the state of the nFCE line. */ diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index 033f8800b1e6..6dba2fb66ae5 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -3,8 +3,6 @@ * * Copyright (C) 2004 Richard Purdie * - * $Id: sharpsl.c,v 1.7 2005/11/07 11:14:31 gleixner Exp $ - * * Based on Sharp's NAND driver sharp_sl.c * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/mtd/nand/spia.c b/drivers/mtd/nand/spia.c index 1f6d429b1583..0cc6d0acb8fe 100644 --- a/drivers/mtd/nand/spia.c +++ b/drivers/mtd/nand/spia.c @@ -8,8 +8,6 @@ * to controllines (due to change in nand.c) * page_cache added * - * $Id: spia.c,v 1.25 2005/11/07 11:14:31 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nand/toto.c b/drivers/mtd/nand/toto.c index f9e2d4a0ab8c..bbf492e6830d 100644 --- a/drivers/mtd/nand/toto.c +++ b/drivers/mtd/nand/toto.c @@ -14,8 +14,6 @@ * Overview: * This is a device driver for the NAND flash device found on the * TI fido board. It supports 32MiB and 64MiB cards - * - * $Id: toto.c,v 1.5 2005/11/07 11:14:31 gleixner Exp $ */ #include <linux/slab.h> diff --git a/drivers/mtd/nand/ts7250.c b/drivers/mtd/nand/ts7250.c index f40081069ab2..807a72752eeb 100644 --- a/drivers/mtd/nand/ts7250.c +++ b/drivers/mtd/nand/ts7250.c @@ -9,8 +9,6 @@ * Derived from drivers/mtd/nand/autcpu12.c * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) * - * $Id: ts7250.c,v 1.4 2004/12/30 22:02:07 joff Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index 0c9ce19ea27a..320b929abe79 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -1,7 +1,6 @@ /* Linux driver for NAND Flash Translation Layer */ /* (c) 1999 Machine Vision Holdings, Inc. */ /* Author: David Woodhouse <dwmw2@infradead.org> */ -/* $Id: nftlcore.c,v 1.98 2005/11/07 11:14:21 gleixner Exp $ */ /* The contents of this file are distributed under the GNU General @@ -803,12 +802,8 @@ static struct mtd_blktrans_ops nftl_tr = { .owner = THIS_MODULE, }; -extern char nftlmountrev[]; - static int __init init_nftl(void) { - printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.98 $, nftlmount.c %s\n", nftlmountrev); - return register_mtd_blktrans(&nftl_tr); } diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index 345e6eff89ce..ccc4f209fbb5 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -4,8 +4,6 @@ * Author: Fabrice Bellard (fabrice.bellard@netgem.com) * Copyright (C) 2000 Netgem S.A. * - * $Id: nftlmount.c,v 1.41 2005/11/07 11:14:21 gleixner Exp $ - * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -31,8 +29,6 @@ #define SECTORSIZE 512 -char nftlmountrev[]="$Revision: 1.41 $"; - /* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the * various device information of the NFTL partition and Bad Unit Table. Update * the ReplUnitTable[] table accroding to the Bad Unit Table. ReplUnitTable[] diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 5d7965f7e9ce..926cf3a4135d 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -325,28 +325,11 @@ static int onenand_wait(struct mtd_info *mtd, int state) ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); - if (ctrl & ONENAND_CTRL_ERROR) { - printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n", ctrl); - if (ctrl & ONENAND_CTRL_LOCK) - printk(KERN_ERR "onenand_wait: it's locked error.\n"); - if (state == FL_READING) { - /* - * A power loss while writing can result in a page - * becoming unreadable. When the device is mounted - * again, reading that page gives controller errors. - * Upper level software like JFFS2 treat -EIO as fatal, - * refusing to mount at all. That means it is necessary - * to treat the error as an ECC error to allow recovery. - * Note that typically in this case, the eraseblock can - * still be erased and rewritten i.e. it has not become - * a bad block. - */ - mtd->ecc_stats.failed++; - return -EBADMSG; - } - return -EIO; - } - + /* + * In the Spec. it checks the controller status first + * However if you get the correct information in case of + * power off recovery (POR) test, it should read ECC status first + */ if (interrupt & ONENAND_INT_READ) { int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); if (ecc) { @@ -364,6 +347,15 @@ static int onenand_wait(struct mtd_info *mtd, int state) return -EIO; } + /* If there's controller error, it's a real error */ + if (ctrl & ONENAND_CTRL_ERROR) { + printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n", + ctrl); + if (ctrl & ONENAND_CTRL_LOCK) + printk(KERN_ERR "onenand_wait: it's locked error.\n"); + return -EIO; + } + return 0; } @@ -1135,22 +1127,26 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state) interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); - /* Initial bad block case: 0x2400 or 0x0400 */ - if (ctrl & ONENAND_CTRL_ERROR) { - printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl); - return ONENAND_BBT_READ_ERROR; - } - if (interrupt & ONENAND_INT_READ) { int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); - if (ecc & ONENAND_ECC_2BIT_ALL) + if (ecc & ONENAND_ECC_2BIT_ALL) { + printk(KERN_INFO "onenand_bbt_wait: ecc error = 0x%04x" + ", controller error 0x%04x\n", ecc, ctrl); return ONENAND_BBT_READ_ERROR; + } } else { printk(KERN_ERR "onenand_bbt_wait: read timeout!" "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); return ONENAND_BBT_READ_FATAL_ERROR; } + /* Initial bad block case: 0x2400 or 0x0400 */ + if (ctrl & ONENAND_CTRL_ERROR) { + printk(KERN_DEBUG "onenand_bbt_wait: " + "controller error = 0x%04x\n", ctrl); + return ONENAND_BBT_READ_ERROR; + } + return 0; } diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index c5030f94f04e..2d600a1bf2aa 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -1,6 +1,4 @@ /* - * $Id: redboot.c,v 1.21 2006/03/30 18:34:37 bjd Exp $ - * * Parse RedBoot-style Flash Image System (FIS) tables and * produce a Linux partition array to match. */ diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c index c84e45465499..e538c0a72abb 100644 --- a/drivers/mtd/rfd_ftl.c +++ b/drivers/mtd/rfd_ftl.c @@ -3,8 +3,6 @@ * * Copyright (C) 2005 Sean Young <sean@mess.org> * - * $Id: rfd_ftl.c,v 1.8 2006/01/15 12:51:44 sean Exp $ - * * This type of flash translation layer (FTL) is used by the Embedded BIOS * by General Software. It is known as the Resident Flash Disk (RFD), see: * diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 961416ac0616..c7630a228310 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -51,14 +51,13 @@ * @name: MTD device name or number string * @vid_hdr_offs: VID header offset */ -struct mtd_dev_param -{ +struct mtd_dev_param { char name[MTD_PARAM_LEN_MAX]; int vid_hdr_offs; }; /* Numbers of elements set in the @mtd_dev_param array */ -static int mtd_devs = 0; +static int mtd_devs; /* MTD devices specification parameters */ static struct mtd_dev_param mtd_dev_param[UBI_MAX_DEVICES]; @@ -160,8 +159,7 @@ void ubi_put_device(struct ubi_device *ubi) } /** - * ubi_get_by_major - get UBI device description object by character device - * major number. + * ubi_get_by_major - get UBI device by character device major number. * @major: major number * * This function is similar to 'ubi_get_device()', but it searches the device @@ -355,15 +353,34 @@ static void kill_volumes(struct ubi_device *ubi) } /** + * free_user_volumes - free all user volumes. + * @ubi: UBI device description object + * + * Normally the volumes are freed at the release function of the volume device + * objects. However, on error paths the volumes have to be freed before the + * device objects have been initialized. + */ +static void free_user_volumes(struct ubi_device *ubi) +{ + int i; + + for (i = 0; i < ubi->vtbl_slots; i++) + if (ubi->volumes[i]) { + kfree(ubi->volumes[i]->eba_tbl); + kfree(ubi->volumes[i]); + } +} + +/** * uif_init - initialize user interfaces for an UBI device. * @ubi: UBI device description object * * This function returns zero in case of success and a negative error code in - * case of failure. + * case of failure. Note, this function destroys all volumes if it failes. */ static int uif_init(struct ubi_device *ubi) { - int i, err; + int i, err, do_free = 0; dev_t dev; sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num); @@ -384,7 +401,7 @@ static int uif_init(struct ubi_device *ubi) ubi_assert(MINOR(dev) == 0); cdev_init(&ubi->cdev, &ubi_cdev_operations); - dbg_msg("%s major is %u", ubi->ubi_name, MAJOR(dev)); + dbg_gen("%s major is %u", ubi->ubi_name, MAJOR(dev)); ubi->cdev.owner = THIS_MODULE; err = cdev_add(&ubi->cdev, dev, 1); @@ -410,10 +427,13 @@ static int uif_init(struct ubi_device *ubi) out_volumes: kill_volumes(ubi); + do_free = 0; out_sysfs: ubi_sysfs_close(ubi); cdev_del(&ubi->cdev); out_unreg: + if (do_free) + free_user_volumes(ubi); unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1); ubi_err("cannot initialize UBI %s, error %d", ubi->ubi_name, err); return err; @@ -422,6 +442,10 @@ out_unreg: /** * uif_close - close user interfaces for an UBI device. * @ubi: UBI device description object + * + * Note, since this function un-registers UBI volume device objects (@vol->dev), + * the memory allocated voe the volumes is freed as well (in the release + * function). */ static void uif_close(struct ubi_device *ubi) { @@ -432,6 +456,21 @@ static void uif_close(struct ubi_device *ubi) } /** + * free_internal_volumes - free internal volumes. + * @ubi: UBI device description object + */ +static void free_internal_volumes(struct ubi_device *ubi) +{ + int i; + + for (i = ubi->vtbl_slots; + i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) { + kfree(ubi->volumes[i]->eba_tbl); + kfree(ubi->volumes[i]); + } +} + +/** * attach_by_scanning - attach an MTD device using scanning method. * @ubi: UBI device descriptor * @@ -475,6 +514,7 @@ static int attach_by_scanning(struct ubi_device *ubi) out_wl: ubi_wl_close(ubi); out_vtbl: + free_internal_volumes(ubi); vfree(ubi->vtbl); out_si: ubi_scan_destroy_si(si); @@ -482,7 +522,7 @@ out_si: } /** - * io_init - initialize I/O unit for a given UBI device. + * io_init - initialize I/O sub-system for a given UBI device. * @ubi: UBI device description object * * If @ubi->vid_hdr_offset or @ubi->leb_start is zero, default offsets are @@ -530,7 +570,11 @@ static int io_init(struct ubi_device *ubi) ubi->min_io_size = ubi->mtd->writesize; ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft; - /* Make sure minimal I/O unit is power of 2 */ + /* + * Make sure minimal I/O unit is power of 2. Note, there is no + * fundamental reason for this assumption. It is just an optimization + * which allows us to avoid costly division operations. + */ if (!is_power_of_2(ubi->min_io_size)) { ubi_err("min. I/O unit (%d) is not power of 2", ubi->min_io_size); @@ -581,7 +625,7 @@ static int io_init(struct ubi_device *ubi) if (ubi->vid_hdr_offset < UBI_EC_HDR_SIZE || ubi->leb_start < ubi->vid_hdr_offset + UBI_VID_HDR_SIZE || ubi->leb_start > ubi->peb_size - UBI_VID_HDR_SIZE || - ubi->leb_start % ubi->min_io_size) { + ubi->leb_start & (ubi->min_io_size - 1)) { ubi_err("bad VID header (%d) or data offsets (%d)", ubi->vid_hdr_offset, ubi->leb_start); return -EINVAL; @@ -646,7 +690,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) /* * Clear the auto-resize flag in the volume in-memory copy of the - * volume table, and 'ubi_resize_volume()' will propogate this change + * volume table, and 'ubi_resize_volume()' will propagate this change * to the flash. */ ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG; @@ -655,7 +699,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) struct ubi_vtbl_record vtbl_rec; /* - * No avalilable PEBs to re-size the volume, clear the flag on + * No available PEBs to re-size the volume, clear the flag on * flash and exit. */ memcpy(&vtbl_rec, &ubi->vtbl[vol_id], @@ -682,13 +726,13 @@ static int autoresize(struct ubi_device *ubi, int vol_id) /** * ubi_attach_mtd_dev - attach an MTD device. - * @mtd_dev: MTD device description object + * @mtd: MTD device description object * @ubi_num: number to assign to the new UBI device * @vid_hdr_offset: VID header offset * * This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number * to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in - * which case this function finds a vacant device nubert and assings it + * which case this function finds a vacant device number and assigns it * automatically. Returns the new UBI device number in case of success and a * negative error code in case of failure. * @@ -698,7 +742,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) { struct ubi_device *ubi; - int i, err; + int i, err, do_free = 1; /* * Check if we already have the same MTD device attached. @@ -735,7 +779,8 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) if (!ubi_devices[ubi_num]) break; if (ubi_num == UBI_MAX_DEVICES) { - dbg_err("only %d UBI devices may be created", UBI_MAX_DEVICES); + dbg_err("only %d UBI devices may be created", + UBI_MAX_DEVICES); return -ENFILE; } } else { @@ -760,6 +805,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) mutex_init(&ubi->buf_mutex); mutex_init(&ubi->ckvol_mutex); + mutex_init(&ubi->mult_mutex); mutex_init(&ubi->volumes_mutex); spin_lock_init(&ubi->volumes_lock); @@ -798,7 +844,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) err = uif_init(ubi); if (err) - goto out_detach; + goto out_nofree; ubi->bgt_thread = kthread_create(ubi_thread, ubi, ubi->bgt_name); if (IS_ERR(ubi->bgt_thread)) { @@ -824,20 +870,22 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) ubi->beb_rsvd_pebs); ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec); - /* Enable the background thread */ - if (!DBG_DISABLE_BGT) { + if (!DBG_DISABLE_BGT) ubi->thread_enabled = 1; - wake_up_process(ubi->bgt_thread); - } + wake_up_process(ubi->bgt_thread); ubi_devices[ubi_num] = ubi; return ubi_num; out_uif: uif_close(ubi); +out_nofree: + do_free = 0; out_detach: - ubi_eba_close(ubi); ubi_wl_close(ubi); + if (do_free) + free_user_volumes(ubi); + free_internal_volumes(ubi); vfree(ubi->vtbl); out_free: vfree(ubi->peb_buf1); @@ -899,8 +947,8 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) kthread_stop(ubi->bgt_thread); uif_close(ubi); - ubi_eba_close(ubi); ubi_wl_close(ubi); + free_internal_volumes(ubi); vfree(ubi->vtbl); put_mtd_device(ubi->mtd); vfree(ubi->peb_buf1); @@ -1044,8 +1092,7 @@ static void __exit ubi_exit(void) module_exit(ubi_exit); /** - * bytes_str_to_int - convert a string representing number of bytes to an - * integer. + * bytes_str_to_int - convert a number of bytes string into an integer. * @str: the string to convert * * This function returns positive resulting integer in case of success and a diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 9d6aae5449b6..03c759b4eeb5 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -39,8 +39,9 @@ #include <linux/stat.h> #include <linux/ioctl.h> #include <linux/capability.h> +#include <linux/uaccess.h> +#include <linux/smp_lock.h> #include <mtd/ubi-user.h> -#include <asm/uaccess.h> #include <asm/div64.h> #include "ubi.h" @@ -103,18 +104,22 @@ static int vol_cdev_open(struct inode *inode, struct file *file) struct ubi_volume_desc *desc; int vol_id = iminor(inode) - 1, mode, ubi_num; + lock_kernel(); ubi_num = ubi_major2num(imajor(inode)); - if (ubi_num < 0) + if (ubi_num < 0) { + unlock_kernel(); return ubi_num; + } if (file->f_mode & FMODE_WRITE) mode = UBI_READWRITE; else mode = UBI_READONLY; - dbg_msg("open volume %d, mode %d", vol_id, mode); + dbg_gen("open volume %d, mode %d", vol_id, mode); desc = ubi_open_volume(ubi_num, vol_id, mode); + unlock_kernel(); if (IS_ERR(desc)) return PTR_ERR(desc); @@ -127,7 +132,7 @@ static int vol_cdev_release(struct inode *inode, struct file *file) struct ubi_volume_desc *desc = file->private_data; struct ubi_volume *vol = desc->vol; - dbg_msg("release volume %d, mode %d", vol->vol_id, desc->mode); + dbg_gen("release volume %d, mode %d", vol->vol_id, desc->mode); if (vol->updating) { ubi_warn("update of volume %d not finished, volume is damaged", @@ -136,7 +141,7 @@ static int vol_cdev_release(struct inode *inode, struct file *file) vol->updating = 0; vfree(vol->upd_buf); } else if (vol->changing_leb) { - dbg_msg("only %lld of %lld bytes received for atomic LEB change" + dbg_gen("only %lld of %lld bytes received for atomic LEB change" " for volume %d:%d, cancel", vol->upd_received, vol->upd_bytes, vol->ubi->ubi_num, vol->vol_id); vol->changing_leb = 0; @@ -178,7 +183,7 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin) return -EINVAL; } - dbg_msg("seek volume %d, offset %lld, origin %d, new offset %lld", + dbg_gen("seek volume %d, offset %lld, origin %d, new offset %lld", vol->vol_id, offset, origin, new_offset); file->f_pos = new_offset; @@ -196,7 +201,7 @@ static ssize_t vol_cdev_read(struct file *file, __user char *buf, size_t count, void *tbuf; uint64_t tmp; - dbg_msg("read %zd bytes from offset %lld of volume %d", + dbg_gen("read %zd bytes from offset %lld of volume %d", count, *offp, vol->vol_id); if (vol->updating) { @@ -211,7 +216,7 @@ static ssize_t vol_cdev_read(struct file *file, __user char *buf, size_t count, return 0; if (vol->corrupted) - dbg_msg("read from corrupted volume %d", vol->vol_id); + dbg_gen("read from corrupted volume %d", vol->vol_id); if (*offp + count > vol->used_bytes) count_save = count = vol->used_bytes - *offp; @@ -280,7 +285,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf, char *tbuf; uint64_t tmp; - dbg_msg("requested: write %zd bytes to offset %lld of volume %u", + dbg_gen("requested: write %zd bytes to offset %lld of volume %u", count, *offp, vol->vol_id); if (vol->vol_type == UBI_STATIC_VOLUME) @@ -290,7 +295,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf, off = do_div(tmp, vol->usable_leb_size); lnum = tmp; - if (off % ubi->min_io_size) { + if (off & (ubi->min_io_size - 1)) { dbg_err("unaligned position"); return -EINVAL; } @@ -299,7 +304,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf, count_save = count = vol->used_bytes - *offp; /* We can write only in fractions of the minimum I/O unit */ - if (count % ubi->min_io_size) { + if (count & (ubi->min_io_size - 1)) { dbg_err("unaligned write length"); return -EINVAL; } @@ -347,7 +352,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf, } #else -#define vol_cdev_direct_write(file, buf, count, offp) -EPERM +#define vol_cdev_direct_write(file, buf, count, offp) (-EPERM) #endif /* CONFIG_MTD_UBI_DEBUG_USERSPACE_IO */ static ssize_t vol_cdev_write(struct file *file, const char __user *buf, @@ -432,7 +437,8 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, break; } - rsvd_bytes = vol->reserved_pebs * (ubi->leb_size-vol->data_pad); + rsvd_bytes = (long long)vol->reserved_pebs * + ubi->leb_size-vol->data_pad; if (bytes < 0 || bytes > rsvd_bytes) { err = -EINVAL; break; @@ -508,7 +514,7 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, break; } - dbg_msg("erase LEB %d:%d", vol->vol_id, lnum); + dbg_gen("erase LEB %d:%d", vol->vol_id, lnum); err = ubi_eba_unmap_leb(ubi, vol, lnum); if (err) break; @@ -559,7 +565,7 @@ static int verify_mkvol_req(const struct ubi_device *ubi, if (req->alignment > ubi->leb_size) goto bad; - n = req->alignment % ubi->min_io_size; + n = req->alignment & (ubi->min_io_size - 1); if (req->alignment != 1 && n) goto bad; @@ -568,6 +574,10 @@ static int verify_mkvol_req(const struct ubi_device *ubi, goto bad; } + n = strnlen(req->name, req->name_len + 1); + if (n != req->name_len) + goto bad; + return 0; bad: @@ -595,6 +605,166 @@ static int verify_rsvol_req(const struct ubi_device *ubi, return 0; } +/** + * rename_volumes - rename UBI volumes. + * @ubi: UBI device description object + * @req: volumes re-name request + * + * This is a helper function for the volume re-name IOCTL which validates the + * the request, opens the volume and calls corresponding volumes management + * function. Returns zero in case of success and a negative error code in case + * of failure. + */ +static int rename_volumes(struct ubi_device *ubi, + struct ubi_rnvol_req *req) +{ + int i, n, err; + struct list_head rename_list; + struct ubi_rename_entry *re, *re1; + + if (req->count < 0 || req->count > UBI_MAX_RNVOL) + return -EINVAL; + + if (req->count == 0) + return 0; + + /* Validate volume IDs and names in the request */ + for (i = 0; i < req->count; i++) { + if (req->ents[i].vol_id < 0 || + req->ents[i].vol_id >= ubi->vtbl_slots) + return -EINVAL; + if (req->ents[i].name_len < 0) + return -EINVAL; + if (req->ents[i].name_len > UBI_VOL_NAME_MAX) + return -ENAMETOOLONG; + req->ents[i].name[req->ents[i].name_len] = '\0'; + n = strlen(req->ents[i].name); + if (n != req->ents[i].name_len) + err = -EINVAL; + } + + /* Make sure volume IDs and names are unique */ + for (i = 0; i < req->count - 1; i++) { + for (n = i + 1; n < req->count; n++) { + if (req->ents[i].vol_id == req->ents[n].vol_id) { + dbg_err("duplicated volume id %d", + req->ents[i].vol_id); + return -EINVAL; + } + if (!strcmp(req->ents[i].name, req->ents[n].name)) { + dbg_err("duplicated volume name \"%s\"", + req->ents[i].name); + return -EINVAL; + } + } + } + + /* Create the re-name list */ + INIT_LIST_HEAD(&rename_list); + for (i = 0; i < req->count; i++) { + int vol_id = req->ents[i].vol_id; + int name_len = req->ents[i].name_len; + const char *name = req->ents[i].name; + + re = kzalloc(sizeof(struct ubi_rename_entry), GFP_KERNEL); + if (!re) { + err = -ENOMEM; + goto out_free; + } + + re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_EXCLUSIVE); + if (IS_ERR(re->desc)) { + err = PTR_ERR(re->desc); + dbg_err("cannot open volume %d, error %d", vol_id, err); + kfree(re); + goto out_free; + } + + /* Skip this re-naming if the name does not really change */ + if (re->desc->vol->name_len == name_len && + !memcmp(re->desc->vol->name, name, name_len)) { + ubi_close_volume(re->desc); + kfree(re); + continue; + } + + re->new_name_len = name_len; + memcpy(re->new_name, name, name_len); + list_add_tail(&re->list, &rename_list); + dbg_msg("will rename volume %d from \"%s\" to \"%s\"", + vol_id, re->desc->vol->name, name); + } + + if (list_empty(&rename_list)) + return 0; + + /* Find out the volumes which have to be removed */ + list_for_each_entry(re, &rename_list, list) { + struct ubi_volume_desc *desc; + int no_remove_needed = 0; + + /* + * Volume @re->vol_id is going to be re-named to + * @re->new_name, while its current name is @name. If a volume + * with name @re->new_name currently exists, it has to be + * removed, unless it is also re-named in the request (@req). + */ + list_for_each_entry(re1, &rename_list, list) { + if (re->new_name_len == re1->desc->vol->name_len && + !memcmp(re->new_name, re1->desc->vol->name, + re1->desc->vol->name_len)) { + no_remove_needed = 1; + break; + } + } + + if (no_remove_needed) + continue; + + /* + * It seems we need to remove volume with name @re->new_name, + * if it exists. + */ + desc = ubi_open_volume_nm(ubi->ubi_num, re->new_name, UBI_EXCLUSIVE); + if (IS_ERR(desc)) { + err = PTR_ERR(desc); + if (err == -ENODEV) + /* Re-naming into a non-existing volume name */ + continue; + + /* The volume exists but busy, or an error occurred */ + dbg_err("cannot open volume \"%s\", error %d", + re->new_name, err); + goto out_free; + } + + re = kzalloc(sizeof(struct ubi_rename_entry), GFP_KERNEL); + if (!re) { + err = -ENOMEM; + ubi_close_volume(desc); + goto out_free; + } + + re->remove = 1; + re->desc = desc; + list_add(&re->list, &rename_list); + dbg_msg("will remove volume %d, name \"%s\"", + re->desc->vol->vol_id, re->desc->vol->name); + } + + mutex_lock(&ubi->volumes_mutex); + err = ubi_rename_volumes(ubi, &rename_list); + mutex_unlock(&ubi->volumes_mutex); + +out_free: + list_for_each_entry_safe(re, re1, &rename_list, list) { + ubi_close_volume(re->desc); + list_del(&re->list); + kfree(re); + } + return err; +} + static int ubi_cdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { @@ -616,19 +786,18 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, { struct ubi_mkvol_req req; - dbg_msg("create volume"); + dbg_gen("create volume"); err = copy_from_user(&req, argp, sizeof(struct ubi_mkvol_req)); if (err) { err = -EFAULT; break; } + req.name[req.name_len] = '\0'; err = verify_mkvol_req(ubi, &req); if (err) break; - req.name[req.name_len] = '\0'; - mutex_lock(&ubi->volumes_mutex); err = ubi_create_volume(ubi, &req); mutex_unlock(&ubi->volumes_mutex); @@ -647,7 +816,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, { int vol_id; - dbg_msg("remove volume"); + dbg_gen("remove volume"); err = get_user(vol_id, (__user int32_t *)argp); if (err) { err = -EFAULT; @@ -661,7 +830,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, } mutex_lock(&ubi->volumes_mutex); - err = ubi_remove_volume(desc); + err = ubi_remove_volume(desc, 0); mutex_unlock(&ubi->volumes_mutex); /* @@ -680,7 +849,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, uint64_t tmp; struct ubi_rsvol_req req; - dbg_msg("re-size volume"); + dbg_gen("re-size volume"); err = copy_from_user(&req, argp, sizeof(struct ubi_rsvol_req)); if (err) { err = -EFAULT; @@ -708,6 +877,32 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, break; } + /* Re-name volumes command */ + case UBI_IOCRNVOL: + { + struct ubi_rnvol_req *req; + + dbg_msg("re-name volumes"); + req = kmalloc(sizeof(struct ubi_rnvol_req), GFP_KERNEL); + if (!req) { + err = -ENOMEM; + break; + }; + + err = copy_from_user(req, argp, sizeof(struct ubi_rnvol_req)); + if (err) { + err = -EFAULT; + kfree(req); + break; + } + + mutex_lock(&ubi->mult_mutex); + err = rename_volumes(ubi, req); + mutex_unlock(&ubi->mult_mutex); + kfree(req); + break; + } + default: err = -ENOTTY; break; @@ -733,7 +928,7 @@ static int ctrl_cdev_ioctl(struct inode *inode, struct file *file, struct ubi_attach_req req; struct mtd_info *mtd; - dbg_msg("attach MTD device"); + dbg_gen("attach MTD device"); err = copy_from_user(&req, argp, sizeof(struct ubi_attach_req)); if (err) { err = -EFAULT; @@ -773,7 +968,7 @@ static int ctrl_cdev_ioctl(struct inode *inode, struct file *file, { int ubi_num; - dbg_msg("dettach MTD device"); + dbg_gen("dettach MTD device"); err = get_user(ubi_num, (__user int32_t *)argp); if (err) { err = -EFAULT; diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c index 56956ec2845f..c0ed60e8ade9 100644 --- a/drivers/mtd/ubi/debug.c +++ b/drivers/mtd/ubi/debug.c @@ -24,7 +24,7 @@ * changes. */ -#ifdef CONFIG_MTD_UBI_DEBUG_MSG +#ifdef CONFIG_MTD_UBI_DEBUG #include "ubi.h" @@ -34,14 +34,19 @@ */ void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { - dbg_msg("erase counter header dump:"); - dbg_msg("magic %#08x", be32_to_cpu(ec_hdr->magic)); - dbg_msg("version %d", (int)ec_hdr->version); - dbg_msg("ec %llu", (long long)be64_to_cpu(ec_hdr->ec)); - dbg_msg("vid_hdr_offset %d", be32_to_cpu(ec_hdr->vid_hdr_offset)); - dbg_msg("data_offset %d", be32_to_cpu(ec_hdr->data_offset)); - dbg_msg("hdr_crc %#08x", be32_to_cpu(ec_hdr->hdr_crc)); - dbg_msg("erase counter header hexdump:"); + printk(KERN_DEBUG "Erase counter header dump:\n"); + printk(KERN_DEBUG "\tmagic %#08x\n", + be32_to_cpu(ec_hdr->magic)); + printk(KERN_DEBUG "\tversion %d\n", (int)ec_hdr->version); + printk(KERN_DEBUG "\tec %llu\n", + (long long)be64_to_cpu(ec_hdr->ec)); + printk(KERN_DEBUG "\tvid_hdr_offset %d\n", + be32_to_cpu(ec_hdr->vid_hdr_offset)); + printk(KERN_DEBUG "\tdata_offset %d\n", + be32_to_cpu(ec_hdr->data_offset)); + printk(KERN_DEBUG "\thdr_crc %#08x\n", + be32_to_cpu(ec_hdr->hdr_crc)); + printk(KERN_DEBUG "erase counter header hexdump:\n"); print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, ec_hdr, UBI_EC_HDR_SIZE, 1); } @@ -52,22 +57,23 @@ void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) */ void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { - dbg_msg("volume identifier header dump:"); - dbg_msg("magic %08x", be32_to_cpu(vid_hdr->magic)); - dbg_msg("version %d", (int)vid_hdr->version); - dbg_msg("vol_type %d", (int)vid_hdr->vol_type); - dbg_msg("copy_flag %d", (int)vid_hdr->copy_flag); - dbg_msg("compat %d", (int)vid_hdr->compat); - dbg_msg("vol_id %d", be32_to_cpu(vid_hdr->vol_id)); - dbg_msg("lnum %d", be32_to_cpu(vid_hdr->lnum)); - dbg_msg("leb_ver %u", be32_to_cpu(vid_hdr->leb_ver)); - dbg_msg("data_size %d", be32_to_cpu(vid_hdr->data_size)); - dbg_msg("used_ebs %d", be32_to_cpu(vid_hdr->used_ebs)); - dbg_msg("data_pad %d", be32_to_cpu(vid_hdr->data_pad)); - dbg_msg("sqnum %llu", + printk(KERN_DEBUG "Volume identifier header dump:\n"); + printk(KERN_DEBUG "\tmagic %08x\n", be32_to_cpu(vid_hdr->magic)); + printk(KERN_DEBUG "\tversion %d\n", (int)vid_hdr->version); + printk(KERN_DEBUG "\tvol_type %d\n", (int)vid_hdr->vol_type); + printk(KERN_DEBUG "\tcopy_flag %d\n", (int)vid_hdr->copy_flag); + printk(KERN_DEBUG "\tcompat %d\n", (int)vid_hdr->compat); + printk(KERN_DEBUG "\tvol_id %d\n", be32_to_cpu(vid_hdr->vol_id)); + printk(KERN_DEBUG "\tlnum %d\n", be32_to_cpu(vid_hdr->lnum)); + printk(KERN_DEBUG "\tdata_size %d\n", be32_to_cpu(vid_hdr->data_size)); + printk(KERN_DEBUG "\tused_ebs %d\n", be32_to_cpu(vid_hdr->used_ebs)); + printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(vid_hdr->data_pad)); + printk(KERN_DEBUG "\tsqnum %llu\n", (unsigned long long)be64_to_cpu(vid_hdr->sqnum)); - dbg_msg("hdr_crc %08x", be32_to_cpu(vid_hdr->hdr_crc)); - dbg_msg("volume identifier header hexdump:"); + printk(KERN_DEBUG "\thdr_crc %08x\n", be32_to_cpu(vid_hdr->hdr_crc)); + printk(KERN_DEBUG "Volume identifier header hexdump:\n"); + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, + vid_hdr, UBI_VID_HDR_SIZE, 1); } /** @@ -76,27 +82,27 @@ void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) */ void ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { - dbg_msg("volume information dump:"); - dbg_msg("vol_id %d", vol->vol_id); - dbg_msg("reserved_pebs %d", vol->reserved_pebs); - dbg_msg("alignment %d", vol->alignment); - dbg_msg("data_pad %d", vol->data_pad); - dbg_msg("vol_type %d", vol->vol_type); - dbg_msg("name_len %d", vol->name_len); - dbg_msg("usable_leb_size %d", vol->usable_leb_size); - dbg_msg("used_ebs %d", vol->used_ebs); - dbg_msg("used_bytes %lld", vol->used_bytes); - dbg_msg("last_eb_bytes %d", vol->last_eb_bytes); - dbg_msg("corrupted %d", vol->corrupted); - dbg_msg("upd_marker %d", vol->upd_marker); + printk(KERN_DEBUG "Volume information dump:\n"); + printk(KERN_DEBUG "\tvol_id %d\n", vol->vol_id); + printk(KERN_DEBUG "\treserved_pebs %d\n", vol->reserved_pebs); + printk(KERN_DEBUG "\talignment %d\n", vol->alignment); + printk(KERN_DEBUG "\tdata_pad %d\n", vol->data_pad); + printk(KERN_DEBUG "\tvol_type %d\n", vol->vol_type); + printk(KERN_DEBUG "\tname_len %d\n", vol->name_len); + printk(KERN_DEBUG "\tusable_leb_size %d\n", vol->usable_leb_size); + printk(KERN_DEBUG "\tused_ebs %d\n", vol->used_ebs); + printk(KERN_DEBUG "\tused_bytes %lld\n", vol->used_bytes); + printk(KERN_DEBUG "\tlast_eb_bytes %d\n", vol->last_eb_bytes); + printk(KERN_DEBUG "\tcorrupted %d\n", vol->corrupted); + printk(KERN_DEBUG "\tupd_marker %d\n", vol->upd_marker); if (vol->name_len <= UBI_VOL_NAME_MAX && strnlen(vol->name, vol->name_len + 1) == vol->name_len) { - dbg_msg("name %s", vol->name); + printk(KERN_DEBUG "\tname %s\n", vol->name); } else { - dbg_msg("the 1st 5 characters of the name: %c%c%c%c%c", - vol->name[0], vol->name[1], vol->name[2], - vol->name[3], vol->name[4]); + printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n", + vol->name[0], vol->name[1], vol->name[2], + vol->name[3], vol->name[4]); } } @@ -109,28 +115,29 @@ void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { int name_len = be16_to_cpu(r->name_len); - dbg_msg("volume table record %d dump:", idx); - dbg_msg("reserved_pebs %d", be32_to_cpu(r->reserved_pebs)); - dbg_msg("alignment %d", be32_to_cpu(r->alignment)); - dbg_msg("data_pad %d", be32_to_cpu(r->data_pad)); - dbg_msg("vol_type %d", (int)r->vol_type); - dbg_msg("upd_marker %d", (int)r->upd_marker); - dbg_msg("name_len %d", name_len); + printk(KERN_DEBUG "Volume table record %d dump:\n", idx); + printk(KERN_DEBUG "\treserved_pebs %d\n", + be32_to_cpu(r->reserved_pebs)); + printk(KERN_DEBUG "\talignment %d\n", be32_to_cpu(r->alignment)); + printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(r->data_pad)); + printk(KERN_DEBUG "\tvol_type %d\n", (int)r->vol_type); + printk(KERN_DEBUG "\tupd_marker %d\n", (int)r->upd_marker); + printk(KERN_DEBUG "\tname_len %d\n", name_len); if (r->name[0] == '\0') { - dbg_msg("name NULL"); + printk(KERN_DEBUG "\tname NULL\n"); return; } if (name_len <= UBI_VOL_NAME_MAX && strnlen(&r->name[0], name_len + 1) == name_len) { - dbg_msg("name %s", &r->name[0]); + printk(KERN_DEBUG "\tname %s\n", &r->name[0]); } else { - dbg_msg("1st 5 characters of the name: %c%c%c%c%c", + printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n", r->name[0], r->name[1], r->name[2], r->name[3], r->name[4]); } - dbg_msg("crc %#08x", be32_to_cpu(r->crc)); + printk(KERN_DEBUG "\tcrc %#08x\n", be32_to_cpu(r->crc)); } /** @@ -139,15 +146,15 @@ void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) */ void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { - dbg_msg("volume scanning information dump:"); - dbg_msg("vol_id %d", sv->vol_id); - dbg_msg("highest_lnum %d", sv->highest_lnum); - dbg_msg("leb_count %d", sv->leb_count); - dbg_msg("compat %d", sv->compat); - dbg_msg("vol_type %d", sv->vol_type); - dbg_msg("used_ebs %d", sv->used_ebs); - dbg_msg("last_data_size %d", sv->last_data_size); - dbg_msg("data_pad %d", sv->data_pad); + printk(KERN_DEBUG "Volume scanning information dump:\n"); + printk(KERN_DEBUG "\tvol_id %d\n", sv->vol_id); + printk(KERN_DEBUG "\thighest_lnum %d\n", sv->highest_lnum); + printk(KERN_DEBUG "\tleb_count %d\n", sv->leb_count); + printk(KERN_DEBUG "\tcompat %d\n", sv->compat); + printk(KERN_DEBUG "\tvol_type %d\n", sv->vol_type); + printk(KERN_DEBUG "\tused_ebs %d\n", sv->used_ebs); + printk(KERN_DEBUG "\tlast_data_size %d\n", sv->last_data_size); + printk(KERN_DEBUG "\tdata_pad %d\n", sv->data_pad); } /** @@ -157,14 +164,13 @@ void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) */ void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type) { - dbg_msg("eraseblock scanning information dump:"); - dbg_msg("ec %d", seb->ec); - dbg_msg("pnum %d", seb->pnum); + printk(KERN_DEBUG "eraseblock scanning information dump:\n"); + printk(KERN_DEBUG "\tec %d\n", seb->ec); + printk(KERN_DEBUG "\tpnum %d\n", seb->pnum); if (type == 0) { - dbg_msg("lnum %d", seb->lnum); - dbg_msg("scrub %d", seb->scrub); - dbg_msg("sqnum %llu", seb->sqnum); - dbg_msg("leb_ver %u", seb->leb_ver); + printk(KERN_DEBUG "\tlnum %d\n", seb->lnum); + printk(KERN_DEBUG "\tscrub %d\n", seb->scrub); + printk(KERN_DEBUG "\tsqnum %llu\n", seb->sqnum); } } @@ -176,16 +182,16 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { char nm[17]; - dbg_msg("volume creation request dump:"); - dbg_msg("vol_id %d", req->vol_id); - dbg_msg("alignment %d", req->alignment); - dbg_msg("bytes %lld", (long long)req->bytes); - dbg_msg("vol_type %d", req->vol_type); - dbg_msg("name_len %d", req->name_len); + printk(KERN_DEBUG "Volume creation request dump:\n"); + printk(KERN_DEBUG "\tvol_id %d\n", req->vol_id); + printk(KERN_DEBUG "\talignment %d\n", req->alignment); + printk(KERN_DEBUG "\tbytes %lld\n", (long long)req->bytes); + printk(KERN_DEBUG "\tvol_type %d\n", req->vol_type); + printk(KERN_DEBUG "\tname_len %d\n", req->name_len); memcpy(nm, req->name, 16); nm[16] = 0; - dbg_msg("the 1st 16 characters of the name: %s", nm); + printk(KERN_DEBUG "\t1st 16 characters of name: %s\n", nm); } -#endif /* CONFIG_MTD_UBI_DEBUG_MSG */ +#endif /* CONFIG_MTD_UBI_DEBUG */ diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h index 8ea99d8c9e1f..78e914d23ece 100644 --- a/drivers/mtd/ubi/debug.h +++ b/drivers/mtd/ubi/debug.h @@ -24,21 +24,16 @@ #ifdef CONFIG_MTD_UBI_DEBUG #include <linux/random.h> -#define ubi_assert(expr) BUG_ON(!(expr)) #define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__) -#else -#define ubi_assert(expr) ({}) -#define dbg_err(fmt, ...) ({}) -#endif -#ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT -#define DBG_DISABLE_BGT 1 -#else -#define DBG_DISABLE_BGT 0 -#endif +#define ubi_assert(expr) do { \ + if (unlikely(!(expr))) { \ + printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \ + __func__, __LINE__, current->pid); \ + ubi_dbg_dump_stack(); \ + } \ +} while (0) -#ifdef CONFIG_MTD_UBI_DEBUG_MSG -/* Generic debugging message */ #define dbg_msg(fmt, ...) \ printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \ current->pid, __func__, ##__VA_ARGS__) @@ -61,36 +56,29 @@ void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv); void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type); void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); +#ifdef CONFIG_MTD_UBI_DEBUG_MSG +/* General debugging messages */ +#define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else - -#define dbg_msg(fmt, ...) ({}) -#define ubi_dbg_dump_stack() ({}) -#define ubi_dbg_dump_ec_hdr(ec_hdr) ({}) -#define ubi_dbg_dump_vid_hdr(vid_hdr) ({}) -#define ubi_dbg_dump_vol_info(vol) ({}) -#define ubi_dbg_dump_vtbl_record(r, idx) ({}) -#define ubi_dbg_dump_sv(sv) ({}) -#define ubi_dbg_dump_seb(seb, type) ({}) -#define ubi_dbg_dump_mkvol_req(req) ({}) - -#endif /* CONFIG_MTD_UBI_DEBUG_MSG */ +#define dbg_gen(fmt, ...) ({}) +#endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_EBA -/* Messages from the eraseblock association unit */ +/* Messages from the eraseblock association sub-system */ #define dbg_eba(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_eba(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_WL -/* Messages from the wear-leveling unit */ +/* Messages from the wear-leveling sub-system */ #define dbg_wl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_wl(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_IO -/* Messages from the input/output unit */ +/* Messages from the input/output sub-system */ #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_io(fmt, ...) ({}) @@ -105,6 +93,12 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); #define UBI_IO_DEBUG 0 #endif +#ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT +#define DBG_DISABLE_BGT 1 +#else +#define DBG_DISABLE_BGT 0 +#endif + #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS /** * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. @@ -149,4 +143,30 @@ static inline int ubi_dbg_is_erase_failure(void) #define ubi_dbg_is_erase_failure() 0 #endif +#else + +#define ubi_assert(expr) ({}) +#define dbg_err(fmt, ...) ({}) +#define dbg_msg(fmt, ...) ({}) +#define dbg_gen(fmt, ...) ({}) +#define dbg_eba(fmt, ...) ({}) +#define dbg_wl(fmt, ...) ({}) +#define dbg_io(fmt, ...) ({}) +#define dbg_bld(fmt, ...) ({}) +#define ubi_dbg_dump_stack() ({}) +#define ubi_dbg_dump_ec_hdr(ec_hdr) ({}) +#define ubi_dbg_dump_vid_hdr(vid_hdr) ({}) +#define ubi_dbg_dump_vol_info(vol) ({}) +#define ubi_dbg_dump_vtbl_record(r, idx) ({}) +#define ubi_dbg_dump_sv(sv) ({}) +#define ubi_dbg_dump_seb(seb, type) ({}) +#define ubi_dbg_dump_mkvol_req(req) ({}) + +#define UBI_IO_DEBUG 0 +#define DBG_DISABLE_BGT 0 +#define ubi_dbg_is_bitflip() 0 +#define ubi_dbg_is_write_failure() 0 +#define ubi_dbg_is_erase_failure() 0 + +#endif /* !CONFIG_MTD_UBI_DEBUG */ #endif /* !__UBI_DEBUG_H__ */ diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 7ce91ca742b1..e04bcf1dff87 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -19,20 +19,20 @@ */ /* - * The UBI Eraseblock Association (EBA) unit. + * The UBI Eraseblock Association (EBA) sub-system. * - * This unit is responsible for I/O to/from logical eraseblock. + * This sub-system is responsible for I/O to/from logical eraseblock. * * Although in this implementation the EBA table is fully kept and managed in * RAM, which assumes poor scalability, it might be (partially) maintained on * flash in future implementations. * - * The EBA unit implements per-logical eraseblock locking. Before accessing a - * logical eraseblock it is locked for reading or writing. The per-logical - * eraseblock locking is implemented by means of the lock tree. The lock tree - * is an RB-tree which refers all the currently locked logical eraseblocks. The - * lock tree elements are &struct ubi_ltree_entry objects. They are indexed by - * (@vol_id, @lnum) pairs. + * The EBA sub-system implements per-logical eraseblock locking. Before + * accessing a logical eraseblock it is locked for reading or writing. The + * per-logical eraseblock locking is implemented by means of the lock tree. The + * lock tree is an RB-tree which refers all the currently locked logical + * eraseblocks. The lock tree elements are &struct ubi_ltree_entry objects. + * They are indexed by (@vol_id, @lnum) pairs. * * EBA also maintains the global sequence counter which is incremented each * time a logical eraseblock is mapped to a physical eraseblock and it is @@ -189,9 +189,7 @@ static struct ubi_ltree_entry *ltree_add_entry(struct ubi_device *ubi, le->users += 1; spin_unlock(&ubi->ltree_lock); - if (le_free) - kfree(le_free); - + kfree(le_free); return le; } @@ -223,22 +221,18 @@ static int leb_read_lock(struct ubi_device *ubi, int vol_id, int lnum) */ static void leb_read_unlock(struct ubi_device *ubi, int vol_id, int lnum) { - int free = 0; struct ubi_ltree_entry *le; spin_lock(&ubi->ltree_lock); le = ltree_lookup(ubi, vol_id, lnum); le->users -= 1; ubi_assert(le->users >= 0); + up_read(&le->mutex); if (le->users == 0) { rb_erase(&le->rb, &ubi->ltree); - free = 1; + kfree(le); } spin_unlock(&ubi->ltree_lock); - - up_read(&le->mutex); - if (free) - kfree(le); } /** @@ -274,7 +268,6 @@ static int leb_write_lock(struct ubi_device *ubi, int vol_id, int lnum) */ static int leb_write_trylock(struct ubi_device *ubi, int vol_id, int lnum) { - int free; struct ubi_ltree_entry *le; le = ltree_add_entry(ubi, vol_id, lnum); @@ -289,12 +282,9 @@ static int leb_write_trylock(struct ubi_device *ubi, int vol_id, int lnum) ubi_assert(le->users >= 0); if (le->users == 0) { rb_erase(&le->rb, &ubi->ltree); - free = 1; - } else - free = 0; - spin_unlock(&ubi->ltree_lock); - if (free) kfree(le); + } + spin_unlock(&ubi->ltree_lock); return 1; } @@ -307,23 +297,18 @@ static int leb_write_trylock(struct ubi_device *ubi, int vol_id, int lnum) */ static void leb_write_unlock(struct ubi_device *ubi, int vol_id, int lnum) { - int free; struct ubi_ltree_entry *le; spin_lock(&ubi->ltree_lock); le = ltree_lookup(ubi, vol_id, lnum); le->users -= 1; ubi_assert(le->users >= 0); + up_write(&le->mutex); if (le->users == 0) { rb_erase(&le->rb, &ubi->ltree); - free = 1; - } else - free = 0; - spin_unlock(&ubi->ltree_lock); - - up_write(&le->mutex); - if (free) kfree(le); + } + spin_unlock(&ubi->ltree_lock); } /** @@ -516,9 +501,8 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum, struct ubi_vid_hdr *vid_hdr; vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) { + if (!vid_hdr) return -ENOMEM; - } mutex_lock(&ubi->buf_mutex); @@ -752,7 +736,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, /* If this is the last LEB @len may be unaligned */ len = ALIGN(data_size, ubi->min_io_size); else - ubi_assert(len % ubi->min_io_size == 0); + ubi_assert(!(len & (ubi->min_io_size - 1))); vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); if (!vid_hdr) @@ -919,7 +903,7 @@ retry: } if (vol->eba_tbl[lnum] >= 0) { - err = ubi_wl_put_peb(ubi, vol->eba_tbl[lnum], 1); + err = ubi_wl_put_peb(ubi, vol->eba_tbl[lnum], 0); if (err) goto out_leb_unlock; } @@ -1141,7 +1125,7 @@ out_unlock_leb: } /** - * ubi_eba_init_scan - initialize the EBA unit using scanning information. + * ubi_eba_init_scan - initialize the EBA sub-system using scanning information. * @ubi: UBI device description object * @si: scanning information * @@ -1156,7 +1140,7 @@ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si) struct ubi_scan_leb *seb; struct rb_node *rb; - dbg_eba("initialize EBA unit"); + dbg_eba("initialize EBA sub-system"); spin_lock_init(&ubi->ltree_lock); mutex_init(&ubi->alc_mutex); @@ -1222,7 +1206,7 @@ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si) ubi->rsvd_pebs += ubi->beb_rsvd_pebs; } - dbg_eba("EBA unit is initialized"); + dbg_eba("EBA sub-system is initialized"); return 0; out_free: @@ -1233,20 +1217,3 @@ out_free: } return err; } - -/** - * ubi_eba_close - close EBA unit. - * @ubi: UBI device description object - */ -void ubi_eba_close(const struct ubi_device *ubi) -{ - int i, num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT; - - dbg_eba("close EBA unit"); - - for (i = 0; i < num_volumes; i++) { - if (!ubi->volumes[i]) - continue; - kfree(ubi->volumes[i]->eba_tbl); - } -} diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c index e909b390069a..605812bb0b1a 100644 --- a/drivers/mtd/ubi/gluebi.c +++ b/drivers/mtd/ubi/gluebi.c @@ -111,7 +111,7 @@ static int gluebi_read(struct mtd_info *mtd, loff_t from, size_t len, struct ubi_device *ubi; uint64_t tmp = from; - dbg_msg("read %zd bytes from offset %lld", len, from); + dbg_gen("read %zd bytes from offset %lld", len, from); if (len < 0 || from < 0 || from + len > mtd->size) return -EINVAL; @@ -162,7 +162,7 @@ static int gluebi_write(struct mtd_info *mtd, loff_t to, size_t len, struct ubi_device *ubi; uint64_t tmp = to; - dbg_msg("write %zd bytes to offset %lld", len, to); + dbg_gen("write %zd bytes to offset %lld", len, to); if (len < 0 || to < 0 || len + to > mtd->size) return -EINVAL; @@ -215,7 +215,7 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr) struct ubi_volume *vol; struct ubi_device *ubi; - dbg_msg("erase %u bytes at offset %u", instr->len, instr->addr); + dbg_gen("erase %u bytes at offset %u", instr->len, instr->addr); if (instr->addr < 0 || instr->addr > mtd->size - mtd->erasesize) return -EINVAL; @@ -249,8 +249,8 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr) if (err) goto out_err; - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); + instr->state = MTD_ERASE_DONE; + mtd_erase_callback(instr); return 0; out_err: @@ -299,12 +299,12 @@ int ubi_create_gluebi(struct ubi_device *ubi, struct ubi_volume *vol) mtd->size = vol->used_bytes; if (add_mtd_device(mtd)) { - ubi_err("cannot not add MTD device\n"); + ubi_err("cannot not add MTD device"); kfree(mtd->name); return -ENFILE; } - dbg_msg("added mtd%d (\"%s\"), size %u, EB size %u", + dbg_gen("added mtd%d (\"%s\"), size %u, EB size %u", mtd->index, mtd->name, mtd->size, mtd->erasesize); return 0; } @@ -322,7 +322,7 @@ int ubi_destroy_gluebi(struct ubi_volume *vol) int err; struct mtd_info *mtd = &vol->gluebi_mtd; - dbg_msg("remove mtd%d", mtd->index); + dbg_gen("remove mtd%d", mtd->index); err = del_mtd_device(mtd); if (err) return err; diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 4ac11df7b048..2fb64be44f1b 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -20,15 +20,15 @@ */ /* - * UBI input/output unit. + * UBI input/output sub-system. * - * This unit provides a uniform way to work with all kinds of the underlying - * MTD devices. It also implements handy functions for reading and writing UBI - * headers. + * This sub-system provides a uniform way to work with all kinds of the + * underlying MTD devices. It also implements handy functions for reading and + * writing UBI headers. * * We are trying to have a paranoid mindset and not to trust to what we read - * from the flash media in order to be more secure and robust. So this unit - * validates every single header it reads from the flash media. + * from the flash media in order to be more secure and robust. So this + * sub-system validates every single header it reads from the flash media. * * Some words about how the eraseblock headers are stored. * @@ -79,11 +79,11 @@ * 512-byte chunks, we have to allocate one more buffer and copy our VID header * to offset 448 of this buffer. * - * The I/O unit does the following trick in order to avoid this extra copy. - * It always allocates a @ubi->vid_hdr_alsize bytes buffer for the VID header - * and returns a pointer to offset @ubi->vid_hdr_shift of this buffer. When the - * VID header is being written out, it shifts the VID header pointer back and - * writes the whole sub-page. + * The I/O sub-system does the following trick in order to avoid this extra + * copy. It always allocates a @ubi->vid_hdr_alsize bytes buffer for the VID + * header and returns a pointer to offset @ubi->vid_hdr_shift of this buffer. + * When the VID header is being written out, it shifts the VID header pointer + * back and writes the whole sub-page. */ #include <linux/crc32.h> @@ -156,15 +156,19 @@ retry: /* * -EUCLEAN is reported if there was a bit-flip which * was corrected, so this is harmless. + * + * We do not report about it here unless debugging is + * enabled. A corresponding message will be printed + * later, when it is has been scrubbed. */ - ubi_msg("fixable bit-flip detected at PEB %d", pnum); + dbg_msg("fixable bit-flip detected at PEB %d", pnum); ubi_assert(len == read); return UBI_IO_BITFLIPS; } if (read != len && retries++ < UBI_IO_RETRIES) { - dbg_io("error %d while reading %d bytes from PEB %d:%d, " - "read only %zd bytes, retry", + dbg_io("error %d while reading %d bytes from PEB %d:%d," + " read only %zd bytes, retry", err, len, pnum, offset, read); yield(); goto retry; @@ -187,7 +191,7 @@ retry: ubi_assert(len == read); if (ubi_dbg_is_bitflip()) { - dbg_msg("bit-flip (emulated)"); + dbg_gen("bit-flip (emulated)"); err = UBI_IO_BITFLIPS; } } @@ -391,6 +395,7 @@ static int torture_peb(struct ubi_device *ubi, int pnum) { int err, i, patt_count; + ubi_msg("run torture test for PEB %d", pnum); patt_count = ARRAY_SIZE(patterns); ubi_assert(patt_count > 0); @@ -434,6 +439,7 @@ static int torture_peb(struct ubi_device *ubi, int pnum) } err = patt_count; + ubi_msg("PEB %d passed torture test, do not mark it a bad", pnum); out: mutex_unlock(&ubi->buf_mutex); @@ -699,8 +705,8 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, if (hdr_crc != crc) { if (verbose) { - ubi_warn("bad EC header CRC at PEB %d, calculated %#08x," - " read %#08x", pnum, crc, hdr_crc); + ubi_warn("bad EC header CRC at PEB %d, calculated " + "%#08x, read %#08x", pnum, crc, hdr_crc); ubi_dbg_dump_ec_hdr(ec_hdr); } return UBI_IO_BAD_EC_HDR; @@ -1095,8 +1101,7 @@ fail: } /** - * paranoid_check_peb_ec_hdr - check that the erase counter header of a - * physical eraseblock is in-place and is all right. + * paranoid_check_peb_ec_hdr - check erase counter header. * @ubi: UBI device description object * @pnum: the physical eraseblock number to check * @@ -1174,8 +1179,7 @@ fail: } /** - * paranoid_check_peb_vid_hdr - check that the volume identifier header of a - * physical eraseblock is in-place and is all right. + * paranoid_check_peb_vid_hdr - check volume identifier header. * @ubi: UBI device description object * @pnum: the physical eraseblock number to check * @@ -1256,7 +1260,7 @@ static int paranoid_check_all_ff(struct ubi_device *ubi, int pnum, int offset, fail: ubi_err("paranoid check failed for PEB %d", pnum); - dbg_msg("hex dump of the %d-%d region", offset, offset + len); + ubi_msg("hex dump of the %d-%d region", offset, offset + len); print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, ubi->dbg_peb_buf, len, 1); err = 1; diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c index a70d58823f8d..5d9bcf109c13 100644 --- a/drivers/mtd/ubi/kapi.c +++ b/drivers/mtd/ubi/kapi.c @@ -106,7 +106,7 @@ struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode) struct ubi_device *ubi; struct ubi_volume *vol; - dbg_msg("open device %d volume %d, mode %d", ubi_num, vol_id, mode); + dbg_gen("open device %d volume %d, mode %d", ubi_num, vol_id, mode); if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES) return ERR_PTR(-EINVAL); @@ -215,7 +215,7 @@ struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name, struct ubi_device *ubi; struct ubi_volume_desc *ret; - dbg_msg("open volume %s, mode %d", name, mode); + dbg_gen("open volume %s, mode %d", name, mode); if (!name) return ERR_PTR(-EINVAL); @@ -266,7 +266,7 @@ void ubi_close_volume(struct ubi_volume_desc *desc) struct ubi_volume *vol = desc->vol; struct ubi_device *ubi = vol->ubi; - dbg_msg("close volume %d, mode %d", vol->vol_id, desc->mode); + dbg_gen("close volume %d, mode %d", vol->vol_id, desc->mode); spin_lock(&ubi->volumes_lock); switch (desc->mode) { @@ -323,7 +323,7 @@ int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset, struct ubi_device *ubi = vol->ubi; int err, vol_id = vol->vol_id; - dbg_msg("read %d bytes from LEB %d:%d:%d", len, vol_id, lnum, offset); + dbg_gen("read %d bytes from LEB %d:%d:%d", len, vol_id, lnum, offset); if (vol_id < 0 || vol_id >= ubi->vtbl_slots || lnum < 0 || lnum >= vol->used_ebs || offset < 0 || len < 0 || @@ -388,7 +388,7 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf, struct ubi_device *ubi = vol->ubi; int vol_id = vol->vol_id; - dbg_msg("write %d bytes to LEB %d:%d:%d", len, vol_id, lnum, offset); + dbg_gen("write %d bytes to LEB %d:%d:%d", len, vol_id, lnum, offset); if (vol_id < 0 || vol_id >= ubi->vtbl_slots) return -EINVAL; @@ -397,8 +397,8 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf, return -EROFS; if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 || - offset + len > vol->usable_leb_size || offset % ubi->min_io_size || - len % ubi->min_io_size) + offset + len > vol->usable_leb_size || + offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1)) return -EINVAL; if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM && @@ -438,7 +438,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf, struct ubi_device *ubi = vol->ubi; int vol_id = vol->vol_id; - dbg_msg("atomically write %d bytes to LEB %d:%d", len, vol_id, lnum); + dbg_gen("atomically write %d bytes to LEB %d:%d", len, vol_id, lnum); if (vol_id < 0 || vol_id >= ubi->vtbl_slots) return -EINVAL; @@ -447,7 +447,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf, return -EROFS; if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 || - len > vol->usable_leb_size || len % ubi->min_io_size) + len > vol->usable_leb_size || len & (ubi->min_io_size - 1)) return -EINVAL; if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM && @@ -482,7 +482,7 @@ int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum) struct ubi_device *ubi = vol->ubi; int err; - dbg_msg("erase LEB %d:%d", vol->vol_id, lnum); + dbg_gen("erase LEB %d:%d", vol->vol_id, lnum); if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME) return -EROFS; @@ -542,7 +542,7 @@ int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum) struct ubi_volume *vol = desc->vol; struct ubi_device *ubi = vol->ubi; - dbg_msg("unmap LEB %d:%d", vol->vol_id, lnum); + dbg_gen("unmap LEB %d:%d", vol->vol_id, lnum); if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME) return -EROFS; @@ -579,7 +579,7 @@ int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype) struct ubi_volume *vol = desc->vol; struct ubi_device *ubi = vol->ubi; - dbg_msg("unmap LEB %d:%d", vol->vol_id, lnum); + dbg_gen("unmap LEB %d:%d", vol->vol_id, lnum); if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME) return -EROFS; @@ -621,7 +621,7 @@ int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum) { struct ubi_volume *vol = desc->vol; - dbg_msg("test LEB %d:%d", vol->vol_id, lnum); + dbg_gen("test LEB %d:%d", vol->vol_id, lnum); if (lnum < 0 || lnum >= vol->reserved_pebs) return -EINVAL; @@ -632,3 +632,27 @@ int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum) return vol->eba_tbl[lnum] >= 0; } EXPORT_SYMBOL_GPL(ubi_is_mapped); + +/** + * ubi_sync - synchronize UBI device buffers. + * @ubi_num: UBI device to synchronize + * + * The underlying MTD device may cache data in hardware or in software. This + * function ensures the caches are flushed. Returns zero in case of success and + * a negative error code in case of failure. + */ +int ubi_sync(int ubi_num) +{ + struct ubi_device *ubi; + + ubi = ubi_get_device(ubi_num); + if (!ubi) + return -ENODEV; + + if (ubi->mtd->sync) + ubi->mtd->sync(ubi->mtd); + + ubi_put_device(ubi); + return 0; +} +EXPORT_SYMBOL_GPL(ubi_sync); diff --git a/drivers/mtd/ubi/misc.c b/drivers/mtd/ubi/misc.c index 93e052812012..22ad31402945 100644 --- a/drivers/mtd/ubi/misc.c +++ b/drivers/mtd/ubi/misc.c @@ -37,7 +37,7 @@ int ubi_calc_data_len(const struct ubi_device *ubi, const void *buf, { int i; - ubi_assert(length % ubi->min_io_size == 0); + ubi_assert(!(length & (ubi->min_io_size - 1))); for (i = length - 1; i >= 0; i--) if (((const uint8_t *)buf)[i] != 0xFF) diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index 96d410e106ab..967bb4406df9 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -19,9 +19,9 @@ */ /* - * UBI scanning unit. + * UBI scanning sub-system. * - * This unit is responsible for scanning the flash media, checking UBI + * This sub-system is responsible for scanning the flash media, checking UBI * headers and providing complete information about the UBI flash image. * * The scanning information is represented by a &struct ubi_scan_info' object. @@ -93,8 +93,7 @@ static int add_to_list(struct ubi_scan_info *si, int pnum, int ec, } /** - * validate_vid_hdr - check that volume identifier header is correct and - * consistent. + * validate_vid_hdr - check volume identifier header. * @vid_hdr: the volume identifier header to check * @sv: information about the volume this logical eraseblock belongs to * @pnum: physical eraseblock number the VID header came from @@ -103,7 +102,7 @@ static int add_to_list(struct ubi_scan_info *si, int pnum, int ec, * non-zero if an inconsistency was found and zero if not. * * Note, UBI does sanity check of everything it reads from the flash media. - * Most of the checks are done in the I/O unit. Here we check that the + * Most of the checks are done in the I/O sub-system. Here we check that the * information in the VID header is consistent to the information in other VID * headers of the same volume. */ @@ -247,45 +246,21 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb, struct ubi_vid_hdr *vh = NULL; unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum); - if (seb->sqnum == 0 && sqnum2 == 0) { - long long abs, v1 = seb->leb_ver, v2 = be32_to_cpu(vid_hdr->leb_ver); - + if (sqnum2 == seb->sqnum) { /* - * UBI constantly increases the logical eraseblock version - * number and it can overflow. Thus, we have to bear in mind - * that versions that are close to %0xFFFFFFFF are less then - * versions that are close to %0. - * - * The UBI WL unit guarantees that the number of pending tasks - * is not greater then %0x7FFFFFFF. So, if the difference - * between any two versions is greater or equivalent to - * %0x7FFFFFFF, there was an overflow and the logical - * eraseblock with lower version is actually newer then the one - * with higher version. - * - * FIXME: but this is anyway obsolete and will be removed at - * some point. + * This must be a really ancient UBI image which has been + * created before sequence numbers support has been added. At + * that times we used 32-bit LEB versions stored in logical + * eraseblocks. That was before UBI got into mainline. We do not + * support these images anymore. Well, those images will work + * still work, but only if no unclean reboots happened. */ - dbg_bld("using old crappy leb_ver stuff"); - - if (v1 == v2) { - ubi_err("PEB %d and PEB %d have the same version %lld", - seb->pnum, pnum, v1); - return -EINVAL; - } - - abs = v1 - v2; - if (abs < 0) - abs = -abs; + ubi_err("unsupported on-flash UBI format\n"); + return -EINVAL; + } - if (abs < 0x7FFFFFFF) - /* Non-overflow situation */ - second_is_newer = (v2 > v1); - else - second_is_newer = (v2 < v1); - } else - /* Obviously the LEB with lower sequence counter is older */ - second_is_newer = sqnum2 > seb->sqnum; + /* Obviously the LEB with lower sequence counter is older */ + second_is_newer = !!(sqnum2 > seb->sqnum); /* * Now we know which copy is newer. If the copy flag of the PEB with @@ -293,7 +268,7 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb, * check data CRC. For the second PEB we already have the VID header, * for the first one - we'll need to re-read it from flash. * - * FIXME: this may be optimized so that we wouldn't read twice. + * Note: this may be optimized so that we wouldn't read twice. */ if (second_is_newer) { @@ -379,8 +354,7 @@ out_free_vidh: } /** - * ubi_scan_add_used - add information about a physical eraseblock to the - * scanning information. + * ubi_scan_add_used - add physical eraseblock to the scanning information. * @ubi: UBI device description object * @si: scanning information * @pnum: the physical eraseblock number @@ -400,7 +374,6 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, int bitflips) { int err, vol_id, lnum; - uint32_t leb_ver; unsigned long long sqnum; struct ubi_scan_volume *sv; struct ubi_scan_leb *seb; @@ -409,10 +382,9 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, vol_id = be32_to_cpu(vid_hdr->vol_id); lnum = be32_to_cpu(vid_hdr->lnum); sqnum = be64_to_cpu(vid_hdr->sqnum); - leb_ver = be32_to_cpu(vid_hdr->leb_ver); - dbg_bld("PEB %d, LEB %d:%d, EC %d, sqnum %llu, ver %u, bitflips %d", - pnum, vol_id, lnum, ec, sqnum, leb_ver, bitflips); + dbg_bld("PEB %d, LEB %d:%d, EC %d, sqnum %llu, bitflips %d", + pnum, vol_id, lnum, ec, sqnum, bitflips); sv = add_volume(si, vol_id, pnum, vid_hdr); if (IS_ERR(sv) < 0) @@ -445,25 +417,20 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, */ dbg_bld("this LEB already exists: PEB %d, sqnum %llu, " - "LEB ver %u, EC %d", seb->pnum, seb->sqnum, - seb->leb_ver, seb->ec); - - /* - * Make sure that the logical eraseblocks have different - * versions. Otherwise the image is bad. - */ - if (seb->leb_ver == leb_ver && leb_ver != 0) { - ubi_err("two LEBs with same version %u", leb_ver); - ubi_dbg_dump_seb(seb, 0); - ubi_dbg_dump_vid_hdr(vid_hdr); - return -EINVAL; - } + "EC %d", seb->pnum, seb->sqnum, seb->ec); /* * Make sure that the logical eraseblocks have different * sequence numbers. Otherwise the image is bad. * - * FIXME: remove 'sqnum != 0' check when leb_ver is removed. + * However, if the sequence number is zero, we assume it must + * be an ancient UBI image from the era when UBI did not have + * sequence numbers. We still can attach these images, unless + * there is a need to distinguish between old and new + * eraseblocks, in which case we'll refuse the image in + * 'compare_lebs()'. In other words, we attach old clean + * images, but refuse attaching old images with duplicated + * logical eraseblocks because there was an unclean reboot. */ if (seb->sqnum == sqnum && sqnum != 0) { ubi_err("two LEBs with same sequence number %llu", @@ -503,7 +470,6 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, seb->pnum = pnum; seb->scrub = ((cmp_res & 2) || bitflips); seb->sqnum = sqnum; - seb->leb_ver = leb_ver; if (sv->highest_lnum == lnum) sv->last_data_size = @@ -540,7 +506,6 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, seb->lnum = lnum; seb->sqnum = sqnum; seb->scrub = bitflips; - seb->leb_ver = leb_ver; if (sv->highest_lnum <= lnum) { sv->highest_lnum = lnum; @@ -554,8 +519,7 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si, } /** - * ubi_scan_find_sv - find information about a particular volume in the - * scanning information. + * ubi_scan_find_sv - find volume in the scanning information. * @si: scanning information * @vol_id: the requested volume ID * @@ -584,8 +548,7 @@ struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si, } /** - * ubi_scan_find_seb - find information about a particular logical - * eraseblock in the volume scanning information. + * ubi_scan_find_seb - find LEB in the volume scanning information. * @sv: a pointer to the volume scanning information * @lnum: the requested logical eraseblock * @@ -645,9 +608,9 @@ void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv) * * This function erases physical eraseblock 'pnum', and writes the erase * counter header to it. This function should only be used on UBI device - * initialization stages, when the EBA unit had not been yet initialized. This - * function returns zero in case of success and a negative error code in case - * of failure. + * initialization stages, when the EBA sub-system had not been yet initialized. + * This function returns zero in case of success and a negative error code in + * case of failure. */ int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si, int pnum, int ec) @@ -687,9 +650,10 @@ out_free: * @si: scanning information * * This function returns a free physical eraseblock. It is supposed to be - * called on the UBI initialization stages when the wear-leveling unit is not - * initialized yet. This function picks a physical eraseblocks from one of the - * lists, writes the EC header if it is needed, and removes it from the list. + * called on the UBI initialization stages when the wear-leveling sub-system is + * not initialized yet. This function picks a physical eraseblocks from one of + * the lists, writes the EC header if it is needed, and removes it from the + * list. * * This function returns scanning physical eraseblock information in case of * success and an error code in case of failure. @@ -742,8 +706,7 @@ struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi, } /** - * process_eb - read UBI headers, check them and add corresponding data - * to the scanning information. + * process_eb - read, check UBI headers, and add them to scanning information. * @ubi: UBI device description object * @si: scanning information * @pnum: the physical eraseblock number @@ -751,7 +714,8 @@ struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi, * This function returns a zero if the physical eraseblock was successfully * handled and a negative error code in case of failure. */ -static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si, int pnum) +static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si, + int pnum) { long long uninitialized_var(ec); int err, bitflips = 0, vol_id, ec_corr = 0; @@ -764,8 +728,9 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si, int pnum return err; else if (err) { /* - * FIXME: this is actually duty of the I/O unit to initialize - * this, but MTD does not provide enough information. + * FIXME: this is actually duty of the I/O sub-system to + * initialize this, but MTD does not provide enough + * information. */ si->bad_peb_count += 1; return 0; @@ -930,7 +895,7 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi) for (pnum = 0; pnum < ubi->peb_count; pnum++) { cond_resched(); - dbg_msg("process PEB %d", pnum); + dbg_gen("process PEB %d", pnum); err = process_eb(ubi, si, pnum); if (err < 0) goto out_vidh; @@ -1079,8 +1044,7 @@ void ubi_scan_destroy_si(struct ubi_scan_info *si) #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID /** - * paranoid_check_si - check if the scanning information is correct and - * consistent. + * paranoid_check_si - check the scanning information. * @ubi: UBI device description object * @si: scanning information * @@ -1265,11 +1229,6 @@ static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si) ubi_err("bad data_pad %d", sv->data_pad); goto bad_vid_hdr; } - - if (seb->leb_ver != be32_to_cpu(vidh->leb_ver)) { - ubi_err("bad leb_ver %u", seb->leb_ver); - goto bad_vid_hdr; - } } if (!last_seb) @@ -1299,8 +1258,7 @@ static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si) if (err < 0) { kfree(buf); return err; - } - else if (err) + } else if (err) buf[pnum] = 1; } diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h index 966b9b682a42..61df208e2f20 100644 --- a/drivers/mtd/ubi/scan.h +++ b/drivers/mtd/ubi/scan.h @@ -34,7 +34,6 @@ * @u: unions RB-tree or @list links * @u.rb: link in the per-volume RB-tree of &struct ubi_scan_leb objects * @u.list: link in one of the eraseblock lists - * @leb_ver: logical eraseblock version (obsolete) * * One object of this type is allocated for each physical eraseblock during * scanning. @@ -49,7 +48,6 @@ struct ubi_scan_leb { struct rb_node rb; struct list_head list; } u; - uint32_t leb_ver; }; /** @@ -59,16 +57,16 @@ struct ubi_scan_leb { * @leb_count: number of logical eraseblocks in this volume * @vol_type: volume type * @used_ebs: number of used logical eraseblocks in this volume (only for - * static volumes) + * static volumes) * @last_data_size: amount of data in the last logical eraseblock of this - * volume (always equivalent to the usable logical eraseblock size in case of - * dynamic volumes) + * volume (always equivalent to the usable logical eraseblock + * size in case of dynamic volumes) * @data_pad: how many bytes at the end of logical eraseblocks of this volume - * are not used (due to volume alignment) + * are not used (due to volume alignment) * @compat: compatibility flags of this volume * @rb: link in the volume RB-tree * @root: root of the RB-tree containing all the eraseblock belonging to this - * volume (&struct ubi_scan_leb objects) + * volume (&struct ubi_scan_leb objects) * * One object of this type is allocated for each volume during scanning. */ @@ -92,8 +90,8 @@ struct ubi_scan_volume { * @free: list of free physical eraseblocks * @erase: list of physical eraseblocks which have to be erased * @alien: list of physical eraseblocks which should not be used by UBI (e.g., + * those belonging to "preserve"-compatible internal volumes) * @bad_peb_count: count of bad physical eraseblocks - * those belonging to "preserve"-compatible internal volumes) * @vols_found: number of volumes found during scanning * @highest_vol_id: highest volume ID * @alien_peb_count: count of physical eraseblocks in the @alien list @@ -106,8 +104,8 @@ struct ubi_scan_volume { * @ec_count: a temporary variable used when calculating @mean_ec * * This data structure contains the result of scanning and may be used by other - * UBI units to build final UBI data structures, further error-recovery and so - * on. + * UBI sub-systems to build final UBI data structures, further error-recovery + * and so on. */ struct ubi_scan_info { struct rb_root volumes; @@ -132,8 +130,7 @@ struct ubi_device; struct ubi_vid_hdr; /* - * ubi_scan_move_to_list - move a physical eraseblock from the volume tree to a - * list. + * ubi_scan_move_to_list - move a PEB from the volume tree to a list. * * @sv: volume scanning information * @seb: scanning eraseblock infprmation diff --git a/drivers/mtd/ubi/ubi-media.h b/drivers/mtd/ubi/ubi-media.h index c3185d9fd048..2ad940409053 100644 --- a/drivers/mtd/ubi/ubi-media.h +++ b/drivers/mtd/ubi/ubi-media.h @@ -98,10 +98,11 @@ enum { * Compatibility constants used by internal volumes. * * @UBI_COMPAT_DELETE: delete this internal volume before anything is written - * to the flash + * to the flash * @UBI_COMPAT_RO: attach this device in read-only mode * @UBI_COMPAT_PRESERVE: preserve this internal volume - do not touch its - * physical eraseblocks, don't allow the wear-leveling unit to move them + * physical eraseblocks, don't allow the wear-leveling + * sub-system to move them * @UBI_COMPAT_REJECT: reject this UBI image */ enum { @@ -123,7 +124,7 @@ enum { * struct ubi_ec_hdr - UBI erase counter header. * @magic: erase counter header magic number (%UBI_EC_HDR_MAGIC) * @version: version of UBI implementation which is supposed to accept this - * UBI image + * UBI image * @padding1: reserved for future, zeroes * @ec: the erase counter * @vid_hdr_offset: where the VID header starts @@ -159,24 +160,23 @@ struct ubi_ec_hdr { * struct ubi_vid_hdr - on-flash UBI volume identifier header. * @magic: volume identifier header magic number (%UBI_VID_HDR_MAGIC) * @version: UBI implementation version which is supposed to accept this UBI - * image (%UBI_VERSION) + * image (%UBI_VERSION) * @vol_type: volume type (%UBI_VID_DYNAMIC or %UBI_VID_STATIC) * @copy_flag: if this logical eraseblock was copied from another physical - * eraseblock (for wear-leveling reasons) + * eraseblock (for wear-leveling reasons) * @compat: compatibility of this volume (%0, %UBI_COMPAT_DELETE, - * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT) + * %UBI_COMPAT_IGNORE, %UBI_COMPAT_PRESERVE, or %UBI_COMPAT_REJECT) * @vol_id: ID of this volume * @lnum: logical eraseblock number - * @leb_ver: version of this logical eraseblock (IMPORTANT: obsolete, to be - * removed, kept only for not breaking older UBI users) + * @padding1: reserved for future, zeroes * @data_size: how many bytes of data this logical eraseblock contains * @used_ebs: total number of used logical eraseblocks in this volume * @data_pad: how many bytes at the end of this physical eraseblock are not - * used + * used * @data_crc: CRC checksum of the data stored in this logical eraseblock - * @padding1: reserved for future, zeroes - * @sqnum: sequence number * @padding2: reserved for future, zeroes + * @sqnum: sequence number + * @padding3: reserved for future, zeroes * @hdr_crc: volume identifier header CRC checksum * * The @sqnum is the value of the global sequence counter at the time when this @@ -224,10 +224,6 @@ struct ubi_ec_hdr { * checksum is correct, this physical eraseblock is selected (P1). Otherwise * the older one (P) is selected. * - * Note, there is an obsolete @leb_ver field which was used instead of @sqnum - * in the past. But it is not used anymore and we keep it in order to be able - * to deal with old UBI images. It will be removed at some point. - * * There are 2 sorts of volumes in UBI: user volumes and internal volumes. * Internal volumes are not seen from outside and are used for various internal * UBI purposes. In this implementation there is only one internal volume - the @@ -248,9 +244,9 @@ struct ubi_ec_hdr { * The @data_crc field contains the CRC checksum of the contents of the logical * eraseblock if this is a static volume. In case of dynamic volumes, it does * not contain the CRC checksum as a rule. The only exception is when the - * data of the physical eraseblock was moved by the wear-leveling unit, then - * the wear-leveling unit calculates the data CRC and stores it in the - * @data_crc field. And of course, the @copy_flag is %in this case. + * data of the physical eraseblock was moved by the wear-leveling sub-system, + * then the wear-leveling sub-system calculates the data CRC and stores it in + * the @data_crc field. And of course, the @copy_flag is %in this case. * * The @data_size field is used only for static volumes because UBI has to know * how many bytes of data are stored in this eraseblock. For dynamic volumes, @@ -277,14 +273,14 @@ struct ubi_vid_hdr { __u8 compat; __be32 vol_id; __be32 lnum; - __be32 leb_ver; /* obsolete, to be removed, don't use */ + __u8 padding1[4]; __be32 data_size; __be32 used_ebs; __be32 data_pad; __be32 data_crc; - __u8 padding1[4]; + __u8 padding2[4]; __be64 sqnum; - __u8 padding2[12]; + __u8 padding3[12]; __be32 hdr_crc; } __attribute__ ((packed)); diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 67dcbd11c15c..1c3fa18c26a7 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -74,15 +74,15 @@ #define UBI_IO_RETRIES 3 /* - * Error codes returned by the I/O unit. + * Error codes returned by the I/O sub-system. * * UBI_IO_PEB_EMPTY: the physical eraseblock is empty, i.e. it contains only - * 0xFF bytes + * %0xFF bytes * UBI_IO_PEB_FREE: the physical eraseblock is free, i.e. it contains only a - * valid erase counter header, and the rest are %0xFF bytes + * valid erase counter header, and the rest are %0xFF bytes * UBI_IO_BAD_EC_HDR: the erase counter header is corrupted (bad magic or CRC) * UBI_IO_BAD_VID_HDR: the volume identifier header is corrupted (bad magic or - * CRC) + * CRC) * UBI_IO_BITFLIPS: bit-flips were detected and corrected */ enum { @@ -99,9 +99,9 @@ enum { * @ec: erase counter * @pnum: physical eraseblock number * - * This data structure is used in the WL unit. Each physical eraseblock has a - * corresponding &struct wl_entry object which may be kept in different - * RB-trees. See WL unit for details. + * This data structure is used in the WL sub-system. Each physical eraseblock + * has a corresponding &struct wl_entry object which may be kept in different + * RB-trees. See WL sub-system for details. */ struct ubi_wl_entry { struct rb_node rb; @@ -118,10 +118,10 @@ struct ubi_wl_entry { * @mutex: read/write mutex to implement read/write access serialization to * the (@vol_id, @lnum) logical eraseblock * - * This data structure is used in the EBA unit to implement per-LEB locking. - * When a logical eraseblock is being locked - corresponding + * This data structure is used in the EBA sub-system to implement per-LEB + * locking. When a logical eraseblock is being locked - corresponding * &struct ubi_ltree_entry object is inserted to the lock tree (@ubi->ltree). - * See EBA unit for details. + * See EBA sub-system for details. */ struct ubi_ltree_entry { struct rb_node rb; @@ -131,6 +131,27 @@ struct ubi_ltree_entry { struct rw_semaphore mutex; }; +/** + * struct ubi_rename_entry - volume re-name description data structure. + * @new_name_len: new volume name length + * @new_name: new volume name + * @remove: if not zero, this volume should be removed, not re-named + * @desc: descriptor of the volume + * @list: links re-name entries into a list + * + * This data structure is utilized in the multiple volume re-name code. Namely, + * UBI first creates a list of &struct ubi_rename_entry objects from the + * &struct ubi_rnvol_req request object, and then utilizes this list to do all + * the job. + */ +struct ubi_rename_entry { + int new_name_len; + char new_name[UBI_VOL_NAME_MAX + 1]; + int remove; + struct ubi_volume_desc *desc; + struct list_head list; +}; + struct ubi_volume_desc; /** @@ -206,7 +227,7 @@ struct ubi_volume { int alignment; int data_pad; int name_len; - char name[UBI_VOL_NAME_MAX+1]; + char name[UBI_VOL_NAME_MAX + 1]; int upd_ebs; int ch_lnum; @@ -225,7 +246,7 @@ struct ubi_volume { #ifdef CONFIG_MTD_UBI_GLUEBI /* * Gluebi-related stuff may be compiled out. - * TODO: this should not be built into UBI but should be a separate + * Note: this should not be built into UBI but should be a separate * ubimtd driver which works on top of UBI and emulates MTD devices. */ struct ubi_volume_desc *gluebi_desc; @@ -235,8 +256,7 @@ struct ubi_volume { }; /** - * struct ubi_volume_desc - descriptor of the UBI volume returned when it is - * opened. + * struct ubi_volume_desc - UBI volume descriptor returned when it is opened. * @vol: reference to the corresponding volume description object * @mode: open mode (%UBI_READONLY, %UBI_READWRITE, or %UBI_EXCLUSIVE) */ @@ -273,7 +293,7 @@ struct ubi_wl_entry; * @vtbl_size: size of the volume table in bytes * @vtbl: in-RAM volume table copy * @volumes_mutex: protects on-flash volume table and serializes volume - * changes, like creation, deletion, update, resize + * changes, like creation, deletion, update, re-size and re-name * * @max_ec: current highest erase counter value * @mean_ec: current mean erase counter value @@ -293,6 +313,7 @@ struct ubi_wl_entry; * @move_to, @move_to_put @erase_pending, @wl_scheduled, and @works * fields * @move_mutex: serializes eraseblock moves + * @work_sem: sycnhronizes the WL worker with use tasks * @wl_scheduled: non-zero if the wear-leveling was scheduled * @lookuptbl: a table to quickly find a &struct ubi_wl_entry object for any * physical eraseblock @@ -316,11 +337,11 @@ struct ubi_wl_entry; * @ro_mode: if the UBI device is in read-only mode * @leb_size: logical eraseblock size * @leb_start: starting offset of logical eraseblocks within physical - * eraseblocks + * eraseblocks * @ec_hdr_alsize: size of the EC header aligned to @hdrs_min_io_size * @vid_hdr_alsize: size of the VID header aligned to @hdrs_min_io_size * @vid_hdr_offset: starting offset of the volume identifier header (might be - * unaligned) + * unaligned) * @vid_hdr_aloffset: starting offset of the VID header aligned to * @hdrs_min_io_size * @vid_hdr_shift: contains @vid_hdr_offset - @vid_hdr_aloffset @@ -331,6 +352,8 @@ struct ubi_wl_entry; * @peb_buf1: a buffer of PEB size used for different purposes * @peb_buf2: another buffer of PEB size used for different purposes * @buf_mutex: proptects @peb_buf1 and @peb_buf2 + * @ckvol_mutex: serializes static volume checking when opening + * @mult_mutex: serializes operations on multiple volumes, like re-nameing * @dbg_peb_buf: buffer of PEB size used for debugging * @dbg_buf_mutex: proptects @dbg_peb_buf */ @@ -356,16 +379,16 @@ struct ubi_device { struct mutex volumes_mutex; int max_ec; - /* TODO: mean_ec is not updated run-time, fix */ + /* Note, mean_ec is not updated run-time - should be fixed */ int mean_ec; - /* EBA unit's stuff */ + /* EBA sub-system's stuff */ unsigned long long global_sqnum; spinlock_t ltree_lock; struct rb_root ltree; struct mutex alc_mutex; - /* Wear-leveling unit's stuff */ + /* Wear-leveling sub-system's stuff */ struct rb_root used; struct rb_root free; struct rb_root scrub; @@ -388,7 +411,7 @@ struct ubi_device { int thread_enabled; char bgt_name[sizeof(UBI_BGT_NAME_PATTERN)+2]; - /* I/O unit's stuff */ + /* I/O sub-system's stuff */ long long flash_size; int peb_count; int peb_size; @@ -411,6 +434,7 @@ struct ubi_device { void *peb_buf2; struct mutex buf_mutex; struct mutex ckvol_mutex; + struct mutex mult_mutex; #ifdef CONFIG_MTD_UBI_DEBUG void *dbg_peb_buf; struct mutex dbg_buf_mutex; @@ -427,12 +451,15 @@ extern struct mutex ubi_devices_mutex; /* vtbl.c */ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx, struct ubi_vtbl_record *vtbl_rec); +int ubi_vtbl_rename_volumes(struct ubi_device *ubi, + struct list_head *rename_list); int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si); /* vmt.c */ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req); -int ubi_remove_volume(struct ubi_volume_desc *desc); +int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl); int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs); +int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list); int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol); void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol); @@ -447,7 +474,8 @@ int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol, const void __user *buf, int count); /* misc.c */ -int ubi_calc_data_len(const struct ubi_device *ubi, const void *buf, int length); +int ubi_calc_data_len(const struct ubi_device *ubi, const void *buf, + int length); int ubi_check_volume(struct ubi_device *ubi, int vol_id); void ubi_calculate_reserved(struct ubi_device *ubi); @@ -477,7 +505,6 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, struct ubi_vid_hdr *vid_hdr); int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si); -void ubi_eba_close(const struct ubi_device *ubi); /* wl.c */ int ubi_wl_get_peb(struct ubi_device *ubi, int dtype); diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c index ddaa1a56cc69..8b89cc18ff0b 100644 --- a/drivers/mtd/ubi/upd.c +++ b/drivers/mtd/ubi/upd.c @@ -39,7 +39,7 @@ */ #include <linux/err.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/div64.h> #include "ubi.h" @@ -56,11 +56,11 @@ static int set_update_marker(struct ubi_device *ubi, struct ubi_volume *vol) int err; struct ubi_vtbl_record vtbl_rec; - dbg_msg("set update marker for volume %d", vol->vol_id); + dbg_gen("set update marker for volume %d", vol->vol_id); if (vol->upd_marker) { ubi_assert(ubi->vtbl[vol->vol_id].upd_marker); - dbg_msg("already set"); + dbg_gen("already set"); return 0; } @@ -92,7 +92,7 @@ static int clear_update_marker(struct ubi_device *ubi, struct ubi_volume *vol, uint64_t tmp; struct ubi_vtbl_record vtbl_rec; - dbg_msg("clear update marker for volume %d", vol->vol_id); + dbg_gen("clear update marker for volume %d", vol->vol_id); memcpy(&vtbl_rec, &ubi->vtbl[vol->vol_id], sizeof(struct ubi_vtbl_record)); @@ -133,7 +133,7 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol, int i, err; uint64_t tmp; - dbg_msg("start update of volume %d, %llu bytes", vol->vol_id, bytes); + dbg_gen("start update of volume %d, %llu bytes", vol->vol_id, bytes); ubi_assert(!vol->updating && !vol->changing_leb); vol->updating = 1; @@ -183,7 +183,7 @@ int ubi_start_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, { ubi_assert(!vol->updating && !vol->changing_leb); - dbg_msg("start changing LEB %d:%d, %u bytes", + dbg_gen("start changing LEB %d:%d, %u bytes", vol->vol_id, req->lnum, req->bytes); if (req->bytes == 0) return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0, @@ -237,16 +237,17 @@ static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, int err; if (vol->vol_type == UBI_DYNAMIC_VOLUME) { - len = ALIGN(len, ubi->min_io_size); - memset(buf + len, 0xFF, len - len); + int l = ALIGN(len, ubi->min_io_size); - len = ubi_calc_data_len(ubi, buf, len); + memset(buf + len, 0xFF, l - len); + len = ubi_calc_data_len(ubi, buf, l); if (len == 0) { - dbg_msg("all %d bytes contain 0xFF - skip", len); + dbg_gen("all %d bytes contain 0xFF - skip", len); return 0; } - err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len, UBI_UNKNOWN); + err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len, + UBI_UNKNOWN); } else { /* * When writing static volume, and this is the last logical @@ -267,6 +268,7 @@ static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, /** * ubi_more_update_data - write more update data. + * @ubi: UBI device description object * @vol: volume description object * @buf: write data (user-space memory buffer) * @count: how much bytes to write @@ -283,7 +285,7 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol, uint64_t tmp; int lnum, offs, err = 0, len, to_write = count; - dbg_msg("write %d of %lld bytes, %lld already passed", + dbg_gen("write %d of %lld bytes, %lld already passed", count, vol->upd_bytes, vol->upd_received); if (ubi->ro_mode) @@ -384,6 +386,7 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol, /** * ubi_more_leb_change_data - accept more data for atomic LEB change. + * @ubi: UBI device description object * @vol: volume description object * @buf: write data (user-space memory buffer) * @count: how much bytes to write @@ -400,7 +403,7 @@ int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol, { int err; - dbg_msg("write %d of %lld bytes, %lld already passed", + dbg_gen("write %d of %lld bytes, %lld already passed", count, vol->upd_bytes, vol->upd_received); if (ubi->ro_mode) @@ -418,7 +421,8 @@ int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol, if (vol->upd_received == vol->upd_bytes) { int len = ALIGN((int)vol->upd_bytes, ubi->min_io_size); - memset(vol->upd_buf + vol->upd_bytes, 0xFF, len - vol->upd_bytes); + memset(vol->upd_buf + vol->upd_bytes, 0xFF, + len - vol->upd_bytes); len = ubi_calc_data_len(ubi, vol->upd_buf, len); err = ubi_eba_atomic_leb_change(ubi, vol, vol->ch_lnum, vol->upd_buf, len, UBI_UNKNOWN); diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c index 5be58d85c639..3531ca9a1e24 100644 --- a/drivers/mtd/ubi/vmt.c +++ b/drivers/mtd/ubi/vmt.c @@ -28,9 +28,9 @@ #include "ubi.h" #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID -static void paranoid_check_volumes(struct ubi_device *ubi); +static int paranoid_check_volumes(struct ubi_device *ubi); #else -#define paranoid_check_volumes(ubi) +#define paranoid_check_volumes(ubi) 0 #endif static ssize_t vol_attribute_show(struct device *dev, @@ -127,6 +127,7 @@ static void vol_release(struct device *dev) { struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev); + kfree(vol->eba_tbl); kfree(vol); } @@ -201,7 +202,7 @@ static void volume_sysfs_close(struct ubi_volume *vol) */ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) { - int i, err, vol_id = req->vol_id, dont_free = 0; + int i, err, vol_id = req->vol_id, do_free = 1; struct ubi_volume *vol; struct ubi_vtbl_record vtbl_rec; uint64_t bytes; @@ -217,7 +218,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) spin_lock(&ubi->volumes_lock); if (vol_id == UBI_VOL_NUM_AUTO) { /* Find unused volume ID */ - dbg_msg("search for vacant volume ID"); + dbg_gen("search for vacant volume ID"); for (i = 0; i < ubi->vtbl_slots; i++) if (!ubi->volumes[i]) { vol_id = i; @@ -232,7 +233,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) req->vol_id = vol_id; } - dbg_msg("volume ID %d, %llu bytes, type %d, name %s", + dbg_gen("volume ID %d, %llu bytes, type %d, name %s", vol_id, (unsigned long long)req->bytes, (int)req->vol_type, req->name); @@ -252,7 +253,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) goto out_unlock; } - /* Calculate how many eraseblocks are requested */ + /* Calculate how many eraseblocks are requested */ vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment; bytes = req->bytes; if (do_div(bytes, vol->usable_leb_size)) @@ -274,7 +275,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) vol->data_pad = ubi->leb_size % vol->alignment; vol->vol_type = req->vol_type; vol->name_len = req->name_len; - memcpy(vol->name, req->name, vol->name_len + 1); + memcpy(vol->name, req->name, vol->name_len); vol->ubi = ubi; /* @@ -349,7 +350,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) vtbl_rec.vol_type = UBI_VID_DYNAMIC; else vtbl_rec.vol_type = UBI_VID_STATIC; - memcpy(vtbl_rec.name, vol->name, vol->name_len + 1); + memcpy(vtbl_rec.name, vol->name, vol->name_len); err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec); if (err) @@ -360,19 +361,19 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req) ubi->vol_count += 1; spin_unlock(&ubi->volumes_lock); - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_sysfs: /* - * We have registered our device, we should not free the volume* + * We have registered our device, we should not free the volume * description object in this function in case of an error - it is * freed by the release function. * * Get device reference to prevent the release function from being * called just after sysfs has been closed. */ - dont_free = 1; + do_free = 0; get_device(&vol->dev); volume_sysfs_close(vol); out_gluebi: @@ -382,17 +383,18 @@ out_gluebi: out_cdev: cdev_del(&vol->cdev); out_mapping: - kfree(vol->eba_tbl); + if (do_free) + kfree(vol->eba_tbl); out_acc: spin_lock(&ubi->volumes_lock); ubi->rsvd_pebs -= vol->reserved_pebs; ubi->avail_pebs += vol->reserved_pebs; out_unlock: spin_unlock(&ubi->volumes_lock); - if (dont_free) - put_device(&vol->dev); - else + if (do_free) kfree(vol); + else + put_device(&vol->dev); ubi_err("cannot create volume %d, error %d", vol_id, err); return err; } @@ -400,19 +402,20 @@ out_unlock: /** * ubi_remove_volume - remove volume. * @desc: volume descriptor + * @no_vtbl: do not change volume table if not zero * * This function removes volume described by @desc. The volume has to be opened * in "exclusive" mode. Returns zero in case of success and a negative error * code in case of failure. The caller has to have the @ubi->volumes_mutex * locked. */ -int ubi_remove_volume(struct ubi_volume_desc *desc) +int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl) { struct ubi_volume *vol = desc->vol; struct ubi_device *ubi = vol->ubi; int i, err, vol_id = vol->vol_id, reserved_pebs = vol->reserved_pebs; - dbg_msg("remove UBI volume %d", vol_id); + dbg_gen("remove UBI volume %d", vol_id); ubi_assert(desc->mode == UBI_EXCLUSIVE); ubi_assert(vol == ubi->volumes[vol_id]); @@ -435,9 +438,11 @@ int ubi_remove_volume(struct ubi_volume_desc *desc) if (err) goto out_err; - err = ubi_change_vtbl_record(ubi, vol_id, NULL); - if (err) - goto out_err; + if (!no_vtbl) { + err = ubi_change_vtbl_record(ubi, vol_id, NULL); + if (err) + goto out_err; + } for (i = 0; i < vol->reserved_pebs; i++) { err = ubi_eba_unmap_leb(ubi, vol, i); @@ -445,8 +450,6 @@ int ubi_remove_volume(struct ubi_volume_desc *desc) goto out_err; } - kfree(vol->eba_tbl); - vol->eba_tbl = NULL; cdev_del(&vol->cdev); volume_sysfs_close(vol); @@ -465,8 +468,9 @@ int ubi_remove_volume(struct ubi_volume_desc *desc) ubi->vol_count -= 1; spin_unlock(&ubi->volumes_lock); - paranoid_check_volumes(ubi); - return 0; + if (!no_vtbl) + err = paranoid_check_volumes(ubi); + return err; out_err: ubi_err("cannot remove volume %d, error %d", vol_id, err); @@ -497,7 +501,7 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs) if (ubi->ro_mode) return -EROFS; - dbg_msg("re-size volume %d to from %d to %d PEBs", + dbg_gen("re-size volume %d to from %d to %d PEBs", vol_id, vol->reserved_pebs, reserved_pebs); if (vol->vol_type == UBI_STATIC_VOLUME && @@ -586,8 +590,8 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs) (long long)vol->used_ebs * vol->usable_leb_size; } - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_acc: if (pebs > 0) { @@ -602,6 +606,44 @@ out_free: } /** + * ubi_rename_volumes - re-name UBI volumes. + * @ubi: UBI device description object + * @rename_list: list of &struct ubi_rename_entry objects + * + * This function re-names or removes volumes specified in the re-name list. + * Returns zero in case of success and a negative error code in case of + * failure. + */ +int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list) +{ + int err; + struct ubi_rename_entry *re; + + err = ubi_vtbl_rename_volumes(ubi, rename_list); + if (err) + return err; + + list_for_each_entry(re, rename_list, list) { + if (re->remove) { + err = ubi_remove_volume(re->desc, 1); + if (err) + break; + } else { + struct ubi_volume *vol = re->desc->vol; + + spin_lock(&ubi->volumes_lock); + vol->name_len = re->new_name_len; + memcpy(vol->name, re->new_name, re->new_name_len + 1); + spin_unlock(&ubi->volumes_lock); + } + } + + if (!err) + err = paranoid_check_volumes(ubi); + return err; +} + +/** * ubi_add_volume - add volume. * @ubi: UBI device description object * @vol: volume description object @@ -615,8 +657,7 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol) int err, vol_id = vol->vol_id; dev_t dev; - dbg_msg("add volume %d", vol_id); - ubi_dbg_dump_vol_info(vol); + dbg_gen("add volume %d", vol_id); /* Register character device for the volume */ cdev_init(&vol->cdev, &ubi_vol_cdev_operations); @@ -650,8 +691,8 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol) return err; } - paranoid_check_volumes(ubi); - return 0; + err = paranoid_check_volumes(ubi); + return err; out_gluebi: err = ubi_destroy_gluebi(vol); @@ -672,7 +713,7 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol) { int err; - dbg_msg("free volume %d", vol->vol_id); + dbg_gen("free volume %d", vol->vol_id); ubi->volumes[vol->vol_id] = NULL; err = ubi_destroy_gluebi(vol); @@ -686,8 +727,10 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol) * paranoid_check_volume - check volume information. * @ubi: UBI device description object * @vol_id: volume ID + * + * Returns zero if volume is all right and a a negative error code if not. */ -static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) +static int paranoid_check_volume(struct ubi_device *ubi, int vol_id) { int idx = vol_id2idx(ubi, vol_id); int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker; @@ -705,16 +748,7 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) goto fail; } spin_unlock(&ubi->volumes_lock); - return; - } - - if (vol->exclusive) { - /* - * The volume may be being created at the moment, do not check - * it (e.g., it may be in the middle of ubi_create_volume(). - */ - spin_unlock(&ubi->volumes_lock); - return; + return 0; } if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 || @@ -727,7 +761,7 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) goto fail; } - n = vol->alignment % ubi->min_io_size; + n = vol->alignment & (ubi->min_io_size - 1); if (vol->alignment != 1 && n) { ubi_err("alignment is not multiple of min I/O unit"); goto fail; @@ -824,31 +858,39 @@ static void paranoid_check_volume(struct ubi_device *ubi, int vol_id) if (alignment != vol->alignment || data_pad != vol->data_pad || upd_marker != vol->upd_marker || vol_type != vol->vol_type || - name_len!= vol->name_len || strncmp(name, vol->name, name_len)) { + name_len != vol->name_len || strncmp(name, vol->name, name_len)) { ubi_err("volume info is different"); goto fail; } spin_unlock(&ubi->volumes_lock); - return; + return 0; fail: ubi_err("paranoid check failed for volume %d", vol_id); - ubi_dbg_dump_vol_info(vol); + if (vol) + ubi_dbg_dump_vol_info(vol); ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id); spin_unlock(&ubi->volumes_lock); - BUG(); + return -EINVAL; } /** * paranoid_check_volumes - check information about all volumes. * @ubi: UBI device description object + * + * Returns zero if volumes are all right and a a negative error code if not. */ -static void paranoid_check_volumes(struct ubi_device *ubi) +static int paranoid_check_volumes(struct ubi_device *ubi) { - int i; + int i, err = 0; - for (i = 0; i < ubi->vtbl_slots; i++) - paranoid_check_volume(ubi, i); + for (i = 0; i < ubi->vtbl_slots; i++) { + err = paranoid_check_volume(ubi, i); + if (err) + break; + } + + return err; } #endif diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c index af36b12be278..217d0e111b2a 100644 --- a/drivers/mtd/ubi/vtbl.c +++ b/drivers/mtd/ubi/vtbl.c @@ -115,8 +115,58 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx, } /** - * vtbl_check - check if volume table is not corrupted and contains sensible - * data. + * ubi_vtbl_rename_volumes - rename UBI volumes in the volume table. + * @ubi: UBI device description object + * @rename_list: list of &struct ubi_rename_entry objects + * + * This function re-names multiple volumes specified in @req in the volume + * table. Returns zero in case of success and a negative error code in case of + * failure. + */ +int ubi_vtbl_rename_volumes(struct ubi_device *ubi, + struct list_head *rename_list) +{ + int i, err; + struct ubi_rename_entry *re; + struct ubi_volume *layout_vol; + + list_for_each_entry(re, rename_list, list) { + uint32_t crc; + struct ubi_volume *vol = re->desc->vol; + struct ubi_vtbl_record *vtbl_rec = &ubi->vtbl[vol->vol_id]; + + if (re->remove) { + memcpy(vtbl_rec, &empty_vtbl_record, + sizeof(struct ubi_vtbl_record)); + continue; + } + + vtbl_rec->name_len = cpu_to_be16(re->new_name_len); + memcpy(vtbl_rec->name, re->new_name, re->new_name_len); + memset(vtbl_rec->name + re->new_name_len, 0, + UBI_VOL_NAME_MAX + 1 - re->new_name_len); + crc = crc32(UBI_CRC32_INIT, vtbl_rec, + UBI_VTBL_RECORD_SIZE_CRC); + vtbl_rec->crc = cpu_to_be32(crc); + } + + layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)]; + for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) { + err = ubi_eba_unmap_leb(ubi, layout_vol, i); + if (err) + return err; + + err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0, + ubi->vtbl_size, UBI_LONGTERM); + if (err) + return err; + } + + return 0; +} + +/** + * vtbl_check - check if volume table is not corrupted and sensible. * @ubi: UBI device description object * @vtbl: volume table * @@ -127,7 +177,7 @@ static int vtbl_check(const struct ubi_device *ubi, const struct ubi_vtbl_record *vtbl) { int i, n, reserved_pebs, alignment, data_pad, vol_type, name_len; - int upd_marker; + int upd_marker, err; uint32_t crc; const char *name; @@ -153,7 +203,7 @@ static int vtbl_check(const struct ubi_device *ubi, if (reserved_pebs == 0) { if (memcmp(&vtbl[i], &empty_vtbl_record, UBI_VTBL_RECORD_SIZE)) { - dbg_err("bad empty record"); + err = 2; goto bad; } continue; @@ -161,56 +211,57 @@ static int vtbl_check(const struct ubi_device *ubi, if (reserved_pebs < 0 || alignment < 0 || data_pad < 0 || name_len < 0) { - dbg_err("negative values"); + err = 3; goto bad; } if (alignment > ubi->leb_size || alignment == 0) { - dbg_err("bad alignment"); + err = 4; goto bad; } - n = alignment % ubi->min_io_size; + n = alignment & (ubi->min_io_size - 1); if (alignment != 1 && n) { - dbg_err("alignment is not multiple of min I/O unit"); + err = 5; goto bad; } n = ubi->leb_size % alignment; if (data_pad != n) { dbg_err("bad data_pad, has to be %d", n); + err = 6; goto bad; } if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) { - dbg_err("bad vol_type"); + err = 7; goto bad; } if (upd_marker != 0 && upd_marker != 1) { - dbg_err("bad upd_marker"); + err = 8; goto bad; } if (reserved_pebs > ubi->good_peb_count) { dbg_err("too large reserved_pebs, good PEBs %d", ubi->good_peb_count); + err = 9; goto bad; } if (name_len > UBI_VOL_NAME_MAX) { - dbg_err("too long volume name, max %d", - UBI_VOL_NAME_MAX); + err = 10; goto bad; } if (name[0] == '\0') { - dbg_err("NULL volume name"); + err = 11; goto bad; } if (name_len != strnlen(name, name_len + 1)) { - dbg_err("bad name_len"); + err = 12; goto bad; } } @@ -235,7 +286,7 @@ static int vtbl_check(const struct ubi_device *ubi, return 0; bad: - ubi_err("volume table check failed, record %d", i); + ubi_err("volume table check failed: record %d, error %d", i, err); ubi_dbg_dump_vtbl_record(&vtbl[i], i); return -EINVAL; } @@ -287,7 +338,6 @@ retry: vid_hdr->data_pad = cpu_to_be32(0); vid_hdr->lnum = cpu_to_be32(copy); vid_hdr->sqnum = cpu_to_be64(++si->max_sqnum); - vid_hdr->leb_ver = cpu_to_be32(old_seb ? old_seb->leb_ver + 1: 0); /* The EC header is already there, write the VID header */ err = ubi_io_write_vid_hdr(ubi, new_seb->pnum, vid_hdr); @@ -370,7 +420,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi, * to LEB 0. */ - dbg_msg("check layout volume"); + dbg_gen("check layout volume"); /* Read both LEB 0 and LEB 1 into memory */ ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) { @@ -384,7 +434,16 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi, err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0, ubi->vtbl_size); if (err == UBI_IO_BITFLIPS || err == -EBADMSG) - /* Scrub the PEB later */ + /* + * Scrub the PEB later. Note, -EBADMSG indicates an + * uncorrectable ECC error, but we have our own CRC and + * the data will be checked later. If the data is OK, + * the PEB will be scrubbed (because we set + * seb->scrub). If the data is not OK, the contents of + * the PEB will be recovered from the second copy, and + * seb->scrub will be cleared in + * 'ubi_scan_add_used()'. + */ seb->scrub = 1; else if (err) goto out_free; @@ -400,7 +459,8 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi, if (!leb_corrupted[0]) { /* LEB 0 is OK */ if (leb[1]) - leb_corrupted[1] = memcmp(leb[0], leb[1], ubi->vtbl_size); + leb_corrupted[1] = memcmp(leb[0], leb[1], + ubi->vtbl_size); if (leb_corrupted[1]) { ubi_warn("volume table copy #2 is corrupted"); err = create_vtbl(ubi, si, 1, leb[0]); @@ -620,30 +680,32 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si, static int check_sv(const struct ubi_volume *vol, const struct ubi_scan_volume *sv) { + int err; + if (sv->highest_lnum >= vol->reserved_pebs) { - dbg_err("bad highest_lnum"); + err = 1; goto bad; } if (sv->leb_count > vol->reserved_pebs) { - dbg_err("bad leb_count"); + err = 2; goto bad; } if (sv->vol_type != vol->vol_type) { - dbg_err("bad vol_type"); + err = 3; goto bad; } if (sv->used_ebs > vol->reserved_pebs) { - dbg_err("bad used_ebs"); + err = 4; goto bad; } if (sv->data_pad != vol->data_pad) { - dbg_err("bad data_pad"); + err = 5; goto bad; } return 0; bad: - ubi_err("bad scanning information"); + ubi_err("bad scanning information, error %d", err); ubi_dbg_dump_sv(sv); ubi_dbg_dump_vol_info(vol); return -EINVAL; @@ -672,14 +734,13 @@ static int check_scanning_info(const struct ubi_device *ubi, return -EINVAL; } - if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT&& + if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT && si->highest_vol_id < UBI_INTERNAL_VOL_START) { ubi_err("too large volume ID %d found by scanning", si->highest_vol_id); return -EINVAL; } - for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) { cond_resched(); @@ -717,8 +778,7 @@ static int check_scanning_info(const struct ubi_device *ubi, } /** - * ubi_read_volume_table - read volume table. - * information. + * ubi_read_volume_table - read the volume table. * @ubi: UBI device description object * @si: scanning information * @@ -797,11 +857,10 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si) out_free: vfree(ubi->vtbl); - for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) - if (ubi->volumes[i]) { - kfree(ubi->volumes[i]); - ubi->volumes[i] = NULL; - } + for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) { + kfree(ubi->volumes[i]); + ubi->volumes[i] = NULL; + } return err; } diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index a471a491f0ab..05d70937b543 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -19,22 +19,22 @@ */ /* - * UBI wear-leveling unit. + * UBI wear-leveling sub-system. * - * This unit is responsible for wear-leveling. It works in terms of physical - * eraseblocks and erase counters and knows nothing about logical eraseblocks, - * volumes, etc. From this unit's perspective all physical eraseblocks are of - * two types - used and free. Used physical eraseblocks are those that were - * "get" by the 'ubi_wl_get_peb()' function, and free physical eraseblocks are - * those that were put by the 'ubi_wl_put_peb()' function. + * This sub-system is responsible for wear-leveling. It works in terms of + * physical* eraseblocks and erase counters and knows nothing about logical + * eraseblocks, volumes, etc. From this sub-system's perspective all physical + * eraseblocks are of two types - used and free. Used physical eraseblocks are + * those that were "get" by the 'ubi_wl_get_peb()' function, and free physical + * eraseblocks are those that were put by the 'ubi_wl_put_peb()' function. * * Physical eraseblocks returned by 'ubi_wl_get_peb()' have only erase counter - * header. The rest of the physical eraseblock contains only 0xFF bytes. + * header. The rest of the physical eraseblock contains only %0xFF bytes. * - * When physical eraseblocks are returned to the WL unit by means of the + * When physical eraseblocks are returned to the WL sub-system by means of the * 'ubi_wl_put_peb()' function, they are scheduled for erasure. The erasure is * done asynchronously in context of the per-UBI device background thread, - * which is also managed by the WL unit. + * which is also managed by the WL sub-system. * * The wear-leveling is ensured by means of moving the contents of used * physical eraseblocks with low erase counter to free physical eraseblocks @@ -43,34 +43,36 @@ * The 'ubi_wl_get_peb()' function accepts data type hints which help to pick * an "optimal" physical eraseblock. For example, when it is known that the * physical eraseblock will be "put" soon because it contains short-term data, - * the WL unit may pick a free physical eraseblock with low erase counter, and - * so forth. + * the WL sub-system may pick a free physical eraseblock with low erase + * counter, and so forth. * - * If the WL unit fails to erase a physical eraseblock, it marks it as bad. + * If the WL sub-system fails to erase a physical eraseblock, it marks it as + * bad. * - * This unit is also responsible for scrubbing. If a bit-flip is detected in a - * physical eraseblock, it has to be moved. Technically this is the same as - * moving it for wear-leveling reasons. + * This sub-system is also responsible for scrubbing. If a bit-flip is detected + * in a physical eraseblock, it has to be moved. Technically this is the same + * as moving it for wear-leveling reasons. * - * As it was said, for the UBI unit all physical eraseblocks are either "free" - * or "used". Free eraseblock are kept in the @wl->free RB-tree, while used - * eraseblocks are kept in a set of different RB-trees: @wl->used, + * As it was said, for the UBI sub-system all physical eraseblocks are either + * "free" or "used". Free eraseblock are kept in the @wl->free RB-tree, while + * used eraseblocks are kept in a set of different RB-trees: @wl->used, * @wl->prot.pnum, @wl->prot.aec, and @wl->scrub. * * Note, in this implementation, we keep a small in-RAM object for each physical * eraseblock. This is surely not a scalable solution. But it appears to be good * enough for moderately large flashes and it is simple. In future, one may - * re-work this unit and make it more scalable. + * re-work this sub-system and make it more scalable. * - * At the moment this unit does not utilize the sequence number, which was - * introduced relatively recently. But it would be wise to do this because the - * sequence number of a logical eraseblock characterizes how old is it. For + * At the moment this sub-system does not utilize the sequence number, which + * was introduced relatively recently. But it would be wise to do this because + * the sequence number of a logical eraseblock characterizes how old is it. For * example, when we move a PEB with low erase counter, and we need to pick the * target PEB, we pick a PEB with the highest EC if our PEB is "old" and we * pick target PEB with an average EC if our PEB is not very "old". This is a - * room for future re-works of the WL unit. + * room for future re-works of the WL sub-system. * - * FIXME: looks too complex, should be simplified (later). + * Note: the stuff with protection trees looks too complex and is difficult to + * understand. Should be fixed. */ #include <linux/slab.h> @@ -92,20 +94,21 @@ /* * Maximum difference between two erase counters. If this threshold is - * exceeded, the WL unit starts moving data from used physical eraseblocks with - * low erase counter to free physical eraseblocks with high erase counter. + * exceeded, the WL sub-system starts moving data from used physical + * eraseblocks with low erase counter to free physical eraseblocks with high + * erase counter. */ #define UBI_WL_THRESHOLD CONFIG_MTD_UBI_WL_THRESHOLD /* - * When a physical eraseblock is moved, the WL unit has to pick the target + * When a physical eraseblock is moved, the WL sub-system has to pick the target * physical eraseblock to move to. The simplest way would be just to pick the * one with the highest erase counter. But in certain workloads this could lead * to an unlimited wear of one or few physical eraseblock. Indeed, imagine a * situation when the picked physical eraseblock is constantly erased after the * data is written to it. So, we have a constant which limits the highest erase - * counter of the free physical eraseblock to pick. Namely, the WL unit does - * not pick eraseblocks with erase counter greater then the lowest erase + * counter of the free physical eraseblock to pick. Namely, the WL sub-system + * does not pick eraseblocks with erase counter greater then the lowest erase * counter plus %WL_FREE_MAX_DIFF. */ #define WL_FREE_MAX_DIFF (2*UBI_WL_THRESHOLD) @@ -123,11 +126,11 @@ * @abs_ec: the absolute erase counter value when the protection ends * @e: the wear-leveling entry of the physical eraseblock under protection * - * When the WL unit returns a physical eraseblock, the physical eraseblock is - * protected from being moved for some "time". For this reason, the physical - * eraseblock is not directly moved from the @wl->free tree to the @wl->used - * tree. There is one more tree in between where this physical eraseblock is - * temporarily stored (@wl->prot). + * When the WL sub-system returns a physical eraseblock, the physical + * eraseblock is protected from being moved for some "time". For this reason, + * the physical eraseblock is not directly moved from the @wl->free tree to the + * @wl->used tree. There is one more tree in between where this physical + * eraseblock is temporarily stored (@wl->prot). * * All this protection stuff is needed because: * o we don't want to move physical eraseblocks just after we have given them @@ -175,7 +178,6 @@ struct ubi_wl_prot_entry { * @list: a link in the list of pending works * @func: worker function * @priv: private data of the worker function - * * @e: physical eraseblock to erase * @torture: if the physical eraseblock has to be tortured * @@ -473,52 +475,47 @@ retry: } switch (dtype) { - case UBI_LONGTERM: - /* - * For long term data we pick a physical eraseblock - * with high erase counter. But the highest erase - * counter we can pick is bounded by the the lowest - * erase counter plus %WL_FREE_MAX_DIFF. - */ - e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF); - protect = LT_PROTECTION; - break; - case UBI_UNKNOWN: - /* - * For unknown data we pick a physical eraseblock with - * medium erase counter. But we by no means can pick a - * physical eraseblock with erase counter greater or - * equivalent than the lowest erase counter plus - * %WL_FREE_MAX_DIFF. - */ - first = rb_entry(rb_first(&ubi->free), - struct ubi_wl_entry, rb); - last = rb_entry(rb_last(&ubi->free), - struct ubi_wl_entry, rb); + case UBI_LONGTERM: + /* + * For long term data we pick a physical eraseblock with high + * erase counter. But the highest erase counter we can pick is + * bounded by the the lowest erase counter plus + * %WL_FREE_MAX_DIFF. + */ + e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF); + protect = LT_PROTECTION; + break; + case UBI_UNKNOWN: + /* + * For unknown data we pick a physical eraseblock with medium + * erase counter. But we by no means can pick a physical + * eraseblock with erase counter greater or equivalent than the + * lowest erase counter plus %WL_FREE_MAX_DIFF. + */ + first = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, rb); + last = rb_entry(rb_last(&ubi->free), struct ubi_wl_entry, rb); - if (last->ec - first->ec < WL_FREE_MAX_DIFF) - e = rb_entry(ubi->free.rb_node, - struct ubi_wl_entry, rb); - else { - medium_ec = (first->ec + WL_FREE_MAX_DIFF)/2; - e = find_wl_entry(&ubi->free, medium_ec); - } - protect = U_PROTECTION; - break; - case UBI_SHORTTERM: - /* - * For short term data we pick a physical eraseblock - * with the lowest erase counter as we expect it will - * be erased soon. - */ - e = rb_entry(rb_first(&ubi->free), - struct ubi_wl_entry, rb); - protect = ST_PROTECTION; - break; - default: - protect = 0; - e = NULL; - BUG(); + if (last->ec - first->ec < WL_FREE_MAX_DIFF) + e = rb_entry(ubi->free.rb_node, + struct ubi_wl_entry, rb); + else { + medium_ec = (first->ec + WL_FREE_MAX_DIFF)/2; + e = find_wl_entry(&ubi->free, medium_ec); + } + protect = U_PROTECTION; + break; + case UBI_SHORTTERM: + /* + * For short term data we pick a physical eraseblock with the + * lowest erase counter as we expect it will be erased soon. + */ + e = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, rb); + protect = ST_PROTECTION; + break; + default: + protect = 0; + e = NULL; + BUG(); } /* @@ -582,7 +579,8 @@ found: * This function returns zero in case of success and a negative error code in * case of failure. */ -static int sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e, int torture) +static int sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e, + int torture) { int err; struct ubi_ec_hdr *ec_hdr; @@ -634,8 +632,7 @@ out_free: } /** - * check_protection_over - check if it is time to stop protecting some - * physical eraseblocks. + * check_protection_over - check if it is time to stop protecting some PEBs. * @ubi: UBI device description object * * This function is called after each erase operation, when the absolute erase @@ -871,6 +868,10 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, } ubi_free_vid_hdr(ubi, vid_hdr); + if (scrubbing && !protect) + ubi_msg("scrubbed PEB %d, data moved to PEB %d", + e1->pnum, e2->pnum); + spin_lock(&ubi->wl_lock); if (protect) prot_tree_add(ubi, e1, pe, protect); @@ -1054,8 +1055,8 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, spin_unlock(&ubi->wl_lock); /* - * One more erase operation has happened, take care about protected - * physical eraseblocks. + * One more erase operation has happened, take care about + * protected physical eraseblocks. */ check_protection_over(ubi); @@ -1136,7 +1137,7 @@ out_ro: } /** - * ubi_wl_put_peb - return a physical eraseblock to the wear-leveling unit. + * ubi_wl_put_peb - return a PEB to the wear-leveling sub-system. * @ubi: UBI device description object * @pnum: physical eraseblock to return * @torture: if this physical eraseblock has to be tortured @@ -1175,11 +1176,11 @@ retry: /* * User is putting the physical eraseblock which was selected * as the target the data is moved to. It may happen if the EBA - * unit already re-mapped the LEB in 'ubi_eba_copy_leb()' but - * the WL unit has not put the PEB to the "used" tree yet, but - * it is about to do this. So we just set a flag which will - * tell the WL worker that the PEB is not needed anymore and - * should be scheduled for erasure. + * sub-system already re-mapped the LEB in 'ubi_eba_copy_leb()' + * but the WL sub-system has not put the PEB to the "used" tree + * yet, but it is about to do this. So we just set a flag which + * will tell the WL worker that the PEB is not needed anymore + * and should be scheduled for erasure. */ dbg_wl("PEB %d is the target of data moving", pnum); ubi_assert(!ubi->move_to_put); @@ -1229,7 +1230,7 @@ int ubi_wl_scrub_peb(struct ubi_device *ubi, int pnum) { struct ubi_wl_entry *e; - ubi_msg("schedule PEB %d for scrubbing", pnum); + dbg_msg("schedule PEB %d for scrubbing", pnum); retry: spin_lock(&ubi->wl_lock); @@ -1368,7 +1369,7 @@ int ubi_thread(void *u) int err; if (kthread_should_stop()) - goto out; + break; if (try_to_freeze()) continue; @@ -1403,7 +1404,6 @@ int ubi_thread(void *u) cond_resched(); } -out: dbg_wl("background thread \"%s\" is killed", ubi->bgt_name); return 0; } @@ -1426,8 +1426,7 @@ static void cancel_pending(struct ubi_device *ubi) } /** - * ubi_wl_init_scan - initialize the wear-leveling unit using scanning - * information. + * ubi_wl_init_scan - initialize the WL sub-system using scanning information. * @ubi: UBI device description object * @si: scanning information * @@ -1584,13 +1583,12 @@ static void protection_trees_destroy(struct ubi_device *ubi) } /** - * ubi_wl_close - close the wear-leveling unit. + * ubi_wl_close - close the wear-leveling sub-system. * @ubi: UBI device description object */ void ubi_wl_close(struct ubi_device *ubi) { - dbg_wl("close the UBI wear-leveling unit"); - + dbg_wl("close the WL sub-system"); cancel_pending(ubi); protection_trees_destroy(ubi); tree_destroy(&ubi->used); @@ -1602,8 +1600,7 @@ void ubi_wl_close(struct ubi_device *ubi) #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID /** - * paranoid_check_ec - make sure that the erase counter of a physical eraseblock - * is correct. + * paranoid_check_ec - make sure that the erase counter of a PEB is correct. * @ubi: UBI device description object * @pnum: the physical eraseblock number to check * @ec: the erase counter to check @@ -1644,13 +1641,12 @@ out_free: } /** - * paranoid_check_in_wl_tree - make sure that a wear-leveling entry is present - * in a WL RB-tree. + * paranoid_check_in_wl_tree - check that wear-leveling entry is in WL RB-tree. * @e: the wear-leveling entry to check * @root: the root of the tree * - * This function returns zero if @e is in the @root RB-tree and %1 if it - * is not. + * This function returns zero if @e is in the @root RB-tree and %1 if it is + * not. */ static int paranoid_check_in_wl_tree(struct ubi_wl_entry *e, struct rb_root *root) |