diff options
Diffstat (limited to 'drivers/mtd/chips')
| -rw-r--r-- | drivers/mtd/chips/Kconfig | 22 | ||||
| -rw-r--r-- | drivers/mtd/chips/Makefile | 4 | ||||
| -rw-r--r-- | drivers/mtd/chips/amd_flash.c | 80 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0001.c | 487 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 160 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0020.c | 183 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_probe.c | 98 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_util.c | 25 | ||||
| -rw-r--r-- | drivers/mtd/chips/chipreg.c | 6 | ||||
| -rw-r--r-- | drivers/mtd/chips/fwh_lock.h | 6 | ||||
| -rw-r--r-- | drivers/mtd/chips/gen_probe.c | 33 | ||||
| -rw-r--r-- | drivers/mtd/chips/jedec.c | 206 | ||||
| -rw-r--r-- | drivers/mtd/chips/jedec_probe.c | 48 | ||||
| -rw-r--r-- | drivers/mtd/chips/map_absent.c | 8 | ||||
| -rw-r--r-- | drivers/mtd/chips/sharp.c | 23 |
15 files changed, 746 insertions, 643 deletions
diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index df95d2158b1..eafa23f5cbd 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -1,5 +1,5 @@ # drivers/mtd/chips/Kconfig -# $Id: Kconfig,v 1.15 2005/06/06 23:04:35 tpoynor Exp $ +# $Id: Kconfig,v 1.18 2005/11/07 11:14:22 gleixner Exp $ menu "RAM/ROM/Flash chip drivers" depends on MTD!=n @@ -39,7 +39,7 @@ config MTD_CFI_ADV_OPTIONS If you need to specify a specific endianness for access to flash chips, or if you wish to reduce the size of the kernel by including support for only specific arrangements of flash chips, say 'Y'. This - option does not directly affect the code, but will enable other + option does not directly affect the code, but will enable other configuration options which allow you to do so. If unsure, say 'N'. @@ -56,7 +56,7 @@ config MTD_CFI_NOSWAP data bits when writing the 'magic' commands to the chips. Saying 'NO', which is the default when CONFIG_MTD_CFI_ADV_OPTIONS isn't enabled, means that the CPU will not do any swapping; the chips - are expected to be wired to the CPU in 'host-endian' form. + are expected to be wired to the CPU in 'host-endian' form. Specific arrangements are possible with the BIG_ENDIAN_BYTE and LITTLE_ENDIAN_BYTE, if the bytes are reversed. @@ -79,10 +79,10 @@ config MTD_CFI_GEOMETRY bool "Specific CFI Flash geometry selection" depends on MTD_CFI_ADV_OPTIONS help - This option does not affect the code directly, but will enable + This option does not affect the code directly, but will enable some other configuration options which would allow you to reduce - the size of the kernel by including support for only certain - arrangements of CFI chips. If unsure, say 'N' and all options + the size of the kernel by including support for only certain + arrangements of CFI chips. If unsure, say 'N' and all options which are supported by the current code will be enabled. config MTD_MAP_BANK_WIDTH_1 @@ -197,7 +197,7 @@ config MTD_CFI_AMDSTD help The Common Flash Interface defines a number of different command sets which a CFI-compliant chip may claim to implement. This code - provides support for one of those command sets, used on chips + provides support for one of those command sets, used on chips including the AMD Am29LV320. config MTD_CFI_AMDSTD_RETRY @@ -237,14 +237,14 @@ config MTD_RAM tristate "Support for RAM chips in bus mapping" depends on MTD help - This option enables basic support for RAM chips accessed through + This option enables basic support for RAM chips accessed through a bus mapping driver. config MTD_ROM tristate "Support for ROM chips in bus mapping" depends on MTD help - This option enables basic support for ROM chips accessed through + This option enables basic support for ROM chips accessed through a bus mapping driver. config MTD_ABSENT @@ -275,7 +275,7 @@ config MTD_AMDSTD depends on MTD && MTD_OBSOLETE_CHIPS help This option enables support for flash chips using AMD-compatible - commands, including some which are not CFI-compatible and hence + commands, including some which are not CFI-compatible and hence cannot be used with the CONFIG_MTD_CFI_AMDSTD option. It also works on AMD compatible chips that do conform to CFI. @@ -285,7 +285,7 @@ config MTD_SHARP depends on MTD && MTD_OBSOLETE_CHIPS help This option enables support for flash chips using Sharp-compatible - commands, including some which are not CFI-compatible and hence + commands, including some which are not CFI-compatible and hence cannot be used with the CONFIG_MTD_CFI_INTELxxx options. config MTD_JEDEC diff --git a/drivers/mtd/chips/Makefile b/drivers/mtd/chips/Makefile index 6830489828c..8afe3092c4e 100644 --- a/drivers/mtd/chips/Makefile +++ b/drivers/mtd/chips/Makefile @@ -1,7 +1,7 @@ # # linux/drivers/chips/Makefile # -# $Id: Makefile.common,v 1.4 2004/07/12 16:07:30 dwmw2 Exp $ +# $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $ # *** BIG UGLY NOTE *** # @@ -11,7 +11,7 @@ # the CFI command set drivers are linked before gen_probe.o obj-$(CONFIG_MTD) += chipreg.o -obj-$(CONFIG_MTD_AMDSTD) += amd_flash.o +obj-$(CONFIG_MTD_AMDSTD) += amd_flash.o obj-$(CONFIG_MTD_CFI) += cfi_probe.o obj-$(CONFIG_MTD_CFI_UTIL) += cfi_util.o obj-$(CONFIG_MTD_CFI_STAA) += cfi_cmdset_0020.o diff --git a/drivers/mtd/chips/amd_flash.c b/drivers/mtd/chips/amd_flash.c index 2dafeba3f3d..fdb91b6f1d9 100644 --- a/drivers/mtd/chips/amd_flash.c +++ b/drivers/mtd/chips/amd_flash.c @@ -3,7 +3,7 @@ * * Author: Jonas Holmberg <jonas.holmberg@axis.com> * - * $Id: amd_flash.c,v 1.27 2005/02/04 07:43:09 jonashg Exp $ + * $Id: amd_flash.c,v 1.28 2005/11/07 11:14:22 gleixner Exp $ * * Copyright (c) 2001 Axis Communications AB * @@ -93,9 +93,9 @@ #define D6_MASK 0x40 struct amd_flash_private { - int device_type; - int interleave; - int numchips; + int device_type; + int interleave; + int numchips; unsigned long chipshift; // const char *im_name; struct flchip chips[0]; @@ -253,7 +253,7 @@ static int amd_flash_do_unlock(struct mtd_info *mtd, loff_t ofs, size_t len, int i; int retval = 0; int lock_status; - + map = mtd->priv; /* Pass the whole chip through sector by sector and check for each @@ -273,7 +273,7 @@ static int amd_flash_do_unlock(struct mtd_info *mtd, loff_t ofs, size_t len, unlock_sector(map, eraseoffset, is_unlock); lock_status = is_sector_locked(map, eraseoffset); - + if (is_unlock && lock_status) { printk("Cannot unlock sector at address %x length %xx\n", eraseoffset, merip->erasesize); @@ -305,7 +305,7 @@ static int amd_flash_lock(struct mtd_info *mtd, loff_t ofs, size_t len) /* * Reads JEDEC manufacturer ID and device ID and returns the index of the first * matching table entry (-1 if not found or alias for already found chip). - */ + */ static int probe_new_chip(struct mtd_info *mtd, __u32 base, struct flchip *chips, struct amd_flash_private *private, @@ -636,7 +636,7 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 }, { .offset = 0x1F0000, .erasesize = 0x02000, .numblocks = 8 } } - } + } }; struct mtd_info *mtd; @@ -701,7 +701,7 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) * mtd->numeraseregions, GFP_KERNEL); - if (!mtd->eraseregions) { + if (!mtd->eraseregions) { printk(KERN_WARNING "%s: Failed to allocate " "memory for MTD erase region info\n", map->name); kfree(mtd); @@ -739,12 +739,12 @@ static struct mtd_info *amd_flash_probe(struct map_info *map) mtd->type = MTD_NORFLASH; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; - mtd->erase = amd_flash_erase; - mtd->read = amd_flash_read; - mtd->write = amd_flash_write; - mtd->sync = amd_flash_sync; - mtd->suspend = amd_flash_suspend; - mtd->resume = amd_flash_resume; + mtd->erase = amd_flash_erase; + mtd->read = amd_flash_read; + mtd->write = amd_flash_write; + mtd->sync = amd_flash_sync; + mtd->suspend = amd_flash_suspend; + mtd->resume = amd_flash_resume; mtd->lock = amd_flash_lock; mtd->unlock = amd_flash_unlock; @@ -789,7 +789,7 @@ retry: map->name, chip->state); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); schedule(); @@ -802,7 +802,7 @@ retry: timeo = jiffies + HZ; goto retry; - } + } adr += chip->start; @@ -889,7 +889,7 @@ retry: map->name, chip->state); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); schedule(); @@ -901,7 +901,7 @@ retry: timeo = jiffies + HZ; goto retry; - } + } chip->state = FL_WRITING; @@ -911,7 +911,7 @@ retry: wide_write(map, datum, adr); times_left = 500000; - while (times_left-- && flash_is_busy(map, adr, private->interleave)) { + while (times_left-- && flash_is_busy(map, adr, private->interleave)) { if (need_resched()) { spin_unlock_bh(chip->mutex); schedule(); @@ -989,7 +989,7 @@ static int amd_flash_write(struct mtd_info *mtd, loff_t to , size_t len, if (ret) { return ret; } - + ofs += n; buf += n; (*retlen) += n; @@ -1002,7 +1002,7 @@ static int amd_flash_write(struct mtd_info *mtd, loff_t to , size_t len, } } } - + /* We are now aligned, write as much as possible. */ while(len >= map->buswidth) { __u32 datum; @@ -1063,7 +1063,7 @@ static int amd_flash_write(struct mtd_info *mtd, loff_t to , size_t len, if (ret) { return ret; } - + (*retlen) += n; } @@ -1085,7 +1085,7 @@ retry: if (chip->state != FL_READY){ set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); schedule(); @@ -1098,7 +1098,7 @@ retry: timeo = jiffies + HZ; goto retry; - } + } chip->state = FL_ERASING; @@ -1106,30 +1106,30 @@ retry: ENABLE_VPP(map); send_cmd(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA); send_cmd_to_addr(map, chip->start, CMD_SECTOR_ERASE_UNLOCK_DATA_2, adr); - + timeo = jiffies + (HZ * 20); spin_unlock_bh(chip->mutex); msleep(1000); spin_lock_bh(chip->mutex); - + while (flash_is_busy(map, adr, private->interleave)) { if (chip->state != FL_ERASING) { /* Someone's suspended the erase. Sleep */ set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); printk(KERN_INFO "%s: erase suspended. Sleeping\n", map->name); schedule(); remove_wait_queue(&chip->wq, &wait); - + if (signal_pending(current)) { return -EINTR; } - + timeo = jiffies + (HZ*2); /* FIXME */ spin_lock_bh(chip->mutex); continue; @@ -1145,7 +1145,7 @@ retry: return -EIO; } - + /* Latency issues. Drop the lock, wait a while and retry */ spin_unlock_bh(chip->mutex); @@ -1153,7 +1153,7 @@ retry: schedule(); else udelay(1); - + spin_lock_bh(chip->mutex); } @@ -1180,7 +1180,7 @@ retry: return -EIO; } } - + DISABLE_VPP(map); chip->state = FL_READY; wake_up(&chip->wq); @@ -1246,7 +1246,7 @@ static int amd_flash_erase(struct mtd_info *mtd, struct erase_info *instr) * with the erase region at that address. */ - while ((i < mtd->numeraseregions) && + while ((i < mtd->numeraseregions) && ((instr->addr + instr->len) >= regions[i].offset)) { i++; } @@ -1293,10 +1293,10 @@ static int amd_flash_erase(struct mtd_info *mtd, struct erase_info *instr) } } } - + instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); - + return 0; } @@ -1324,7 +1324,7 @@ static void amd_flash_sync(struct mtd_info *mtd) case FL_JEDEC_QUERY: chip->oldstate = chip->state; chip->state = FL_SYNCING; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1335,13 +1335,13 @@ static void amd_flash_sync(struct mtd_info *mtd) default: /* Not an idle state */ add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); schedule(); remove_wait_queue(&chip->wq, &wait); - + goto retry; } } @@ -1351,7 +1351,7 @@ static void amd_flash_sync(struct mtd_info *mtd) chip = &private->chips[i]; spin_lock_bh(chip->mutex); - + if (chip->state == FL_SYNCING) { chip->state = chip->oldstate; wake_up(&chip->wq); diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 0cfcd88468e..143f01a4c17 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -4,9 +4,9 @@ * * (C) 2000 Red Hat. GPL'd * - * $Id: cfi_cmdset_0001.c,v 1.178 2005/05/19 17:05:43 nico Exp $ + * $Id: cfi_cmdset_0001.c,v 1.185 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.) @@ -51,6 +51,7 @@ static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); static int cfi_intelext_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); +static int cfi_intelext_writev(struct mtd_info *, const struct kvec *, unsigned long, loff_t, size_t *); static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *); static void cfi_intelext_sync (struct mtd_info *); static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len); @@ -105,6 +106,7 @@ static struct mtd_chip_driver cfi_intelext_chipdrv = { static void cfi_tell_features(struct cfi_pri_intelext *extp) { int i; + printk(" Extended Query version %c.%c\n", extp->MajorVersion, extp->MinorVersion); printk(" Feature/Command Support: %4.4X\n", extp->FeatureSupport); printk(" - Chip Erase: %s\n", extp->FeatureSupport&1?"supported":"unsupported"); printk(" - Suspend Erase: %s\n", extp->FeatureSupport&2?"supported":"unsupported"); @@ -116,36 +118,43 @@ static void cfi_tell_features(struct cfi_pri_intelext *extp) printk(" - Page-mode read: %s\n", extp->FeatureSupport&128?"supported":"unsupported"); printk(" - Synchronous read: %s\n", extp->FeatureSupport&256?"supported":"unsupported"); printk(" - Simultaneous operations: %s\n", extp->FeatureSupport&512?"supported":"unsupported"); - for (i=10; i<32; i++) { - if (extp->FeatureSupport & (1<<i)) + printk(" - Extended Flash Array: %s\n", extp->FeatureSupport&1024?"supported":"unsupported"); + for (i=11; i<32; i++) { + if (extp->FeatureSupport & (1<<i)) printk(" - Unknown Bit %X: supported\n", i); } - + printk(" Supported functions after Suspend: %2.2X\n", extp->SuspendCmdSupport); printk(" - Program after Erase Suspend: %s\n", extp->SuspendCmdSupport&1?"supported":"unsupported"); for (i=1; i<8; i++) { if (extp->SuspendCmdSupport & (1<<i)) printk(" - Unknown Bit %X: supported\n", i); } - + printk(" Block Status Register Mask: %4.4X\n", extp->BlkStatusRegMask); printk(" - Lock Bit Active: %s\n", extp->BlkStatusRegMask&1?"yes":"no"); - printk(" - Valid Bit Active: %s\n", extp->BlkStatusRegMask&2?"yes":"no"); - for (i=2; i<16; i++) { + printk(" - Lock-Down Bit Active: %s\n", extp->BlkStatusRegMask&2?"yes":"no"); + for (i=2; i<3; i++) { if (extp->BlkStatusRegMask & (1<<i)) printk(" - Unknown Bit %X Active: yes\n",i); } - - printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n", + printk(" - EFA Lock Bit: %s\n", extp->BlkStatusRegMask&16?"yes":"no"); + printk(" - EFA Lock-Down Bit: %s\n", extp->BlkStatusRegMask&32?"yes":"no"); + for (i=6; i<16; i++) { + if (extp->BlkStatusRegMask & (1<<i)) + printk(" - Unknown Bit %X Active: yes\n",i); + } + + printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n", extp->VccOptimal >> 4, extp->VccOptimal & 0xf); if (extp->VppOptimal) - printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n", + printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n", extp->VppOptimal >> 4, extp->VppOptimal & 0xf); } #endif #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE -/* Some Intel Strata Flash prior to FPO revision C has bugs in this area */ +/* Some Intel Strata Flash prior to FPO revision C has bugs in this area */ static void fixup_intel_strataflash(struct mtd_info *mtd, void* param) { struct map_info *map = mtd->priv; @@ -176,7 +185,7 @@ static void fixup_st_m28w320ct(struct mtd_info *mtd, void* param) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; - + cfi->cfiq->BufWriteTimeoutTyp = 0; /* Not supported */ cfi->cfiq->BufWriteTimeoutMax = 0; /* Not supported */ } @@ -185,7 +194,7 @@ static void fixup_st_m28w320cb(struct mtd_info *mtd, void* param) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; - + /* Note this is done after the region info is endian swapped */ cfi->cfiq->EraseRegionInfo[1] = (cfi->cfiq->EraseRegionInfo[1] & 0xffff0000) | 0x3e; @@ -207,12 +216,13 @@ static void fixup_use_write_buffers(struct mtd_info *mtd, void *param) if (cfi->cfiq->BufWriteTimeoutTyp) { printk(KERN_INFO "Using buffer write method\n" ); mtd->write = cfi_intelext_write_buffers; + mtd->writev = cfi_intelext_writev; } } static struct cfi_fixup cfi_fixup_table[] = { #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE - { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL }, + { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL }, #endif #ifdef CMDSET0001_DISABLE_WRITE_SUSPEND { CFI_MFR_ANY, CFI_ID_ANY, fixup_no_write_suspend, NULL }, @@ -252,12 +262,21 @@ read_pri_intelext(struct map_info *map, __u16 adr) if (!extp) return NULL; + if (extp->MajorVersion != '1' || + (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { + printk(KERN_ERR " Unknown Intel/Sharp Extended Query " + "version %c.%c.\n", extp->MajorVersion, + extp->MinorVersion); + kfree(extp); + return NULL; + } + /* Do some byteswapping if necessary */ extp->FeatureSupport = le32_to_cpu(extp->FeatureSupport); extp->BlkStatusRegMask = le16_to_cpu(extp->BlkStatusRegMask); extp->ProtRegAddr = le16_to_cpu(extp->ProtRegAddr); - if (extp->MajorVersion == '1' && extp->MinorVersion == '3') { + if (extp->MajorVersion == '1' && extp->MinorVersion >= '3') { unsigned int extra_size = 0; int nb_parts, i; @@ -266,7 +285,10 @@ read_pri_intelext(struct map_info *map, __u16 adr) sizeof(struct cfi_intelext_otpinfo); /* Burst Read info */ - extra_size += 6; + extra_size += 2; + if (extp_size < sizeof(*extp) + extra_size) + goto need_more; + extra_size += extp->extra[extra_size-1]; /* Number of hardware-partitions */ extra_size += 1; @@ -274,6 +296,10 @@ read_pri_intelext(struct map_info *map, __u16 adr) goto need_more; nb_parts = extp->extra[extra_size - 1]; + /* skip the sizeof(partregion) field in CFI 1.4 */ + if (extp->MinorVersion >= '4') + extra_size += 2; + for (i = 0; i < nb_parts; i++) { struct cfi_intelext_regioninfo *rinfo; rinfo = (struct cfi_intelext_regioninfo *)&extp->extra[extra_size]; @@ -285,6 +311,9 @@ read_pri_intelext(struct map_info *map, __u16 adr) * sizeof(struct cfi_intelext_blockinfo); } + if (extp->MinorVersion >= '4') + extra_size += sizeof(struct cfi_intelext_programming_regioninfo); + if (extp_size < sizeof(*extp) + extra_size) { need_more: extp_size = sizeof(*extp) + extra_size; @@ -298,7 +327,7 @@ read_pri_intelext(struct map_info *map, __u16 adr) goto again; } } - + return extp; } @@ -339,7 +368,7 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) mtd->reboot_notifier.notifier_call = cfi_intelext_reboot; if (cfi->cfi_mode == CFI_MODE_CFI) { - /* + /* * It's a real CFI chip, not one for which the probe * routine faked a CFI structure. So we read the feature * table from it. @@ -354,14 +383,14 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) } /* Install our own private info structure */ - cfi->cmdset_priv = extp; + cfi->cmdset_priv = extp; cfi_fixup(mtd, cfi_fixup_table); #ifdef DEBUG_CFI_FEATURES /* Tell the user about it in lots of lovely detail */ cfi_tell_features(extp); -#endif +#endif if(extp->SuspendCmdSupport & 1) { printk(KERN_NOTICE "cfi_cmdset_0001: Erase suspend on write enabled\n"); @@ -379,10 +408,10 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp; cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp; cfi->chips[i].ref_point_counter = 0; - } + } map->fldrv = &cfi_intelext_chipdrv; - + return cfi_intelext_setup(mtd); } @@ -399,13 +428,13 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) + mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) * mtd->numeraseregions, GFP_KERNEL); - if (!mtd->eraseregions) { + if (!mtd->eraseregions) { printk(KERN_ERR "Failed to allocate memory for MTD erase region info\n"); goto setup_err; } - + for (i=0; i<cfi->cfiq->NumEraseRegions; i++) { unsigned long ernum, ersize; ersize = ((cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff) * cfi->interleave; @@ -429,7 +458,7 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) } for (i=0; i<mtd->numeraseregions;i++){ - printk(KERN_DEBUG "%d: offset=0x%x,size=0x%x,blocks=%d\n", + printk(KERN_DEBUG "erase region %d: offset=0x%x,size=0x%x,blocks=%d\n", i,mtd->eraseregions[i].offset, mtd->eraseregions[i].erasesize, mtd->eraseregions[i].numblocks); @@ -455,8 +484,7 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) setup_err: if(mtd) { - if(mtd->eraseregions) - kfree(mtd->eraseregions); + kfree(mtd->eraseregions); kfree(mtd); } kfree(cfi->cmdset_priv); @@ -481,7 +509,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, * arrangement at this point. This can be rearranged in the future * if someone feels motivated enough. --nico */ - if (extp && extp->MajorVersion == '1' && extp->MinorVersion == '3' + if (extp && extp->MajorVersion == '1' && extp->MinorVersion >= '3' && extp->FeatureSupport & (1 << 9)) { struct cfi_private *newcfi; struct flchip *chip; @@ -493,12 +521,16 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, sizeof(struct cfi_intelext_otpinfo); /* Burst Read info */ - offs += 6; + offs += extp->extra[offs+1]+2; /* Number of partition regions */ numregions = extp->extra[offs]; offs += 1; + /* skip the sizeof(partregion) field in CFI 1.4 */ + if (extp->MinorVersion >= '4') + offs += 2; + /* Number of hardware partitions */ numparts = 0; for (i = 0; i < numregions; i++) { @@ -510,6 +542,20 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, sizeof(struct cfi_intelext_blockinfo); } + /* Programming Region info */ + if (extp->MinorVersion >= '4') { + struct cfi_intelext_programming_regioninfo *prinfo; + prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs]; + MTD_PROGREGION_SIZE(mtd) = cfi->interleave << prinfo->ProgRegShift; + MTD_PROGREGION_CTRLMODE_VALID(mtd) = cfi->interleave * prinfo->ControlValid; + MTD_PROGREGION_CTRLMODE_INVALID(mtd) = cfi->interleave * prinfo->ControlInvalid; + mtd->flags |= MTD_PROGRAM_REGIONS; + printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d\n", + map->name, MTD_PROGREGION_SIZE(mtd), + MTD_PROGREGION_CTRLMODE_VALID(mtd), + MTD_PROGREGION_CTRLMODE_INVALID(mtd)); + } + /* * All functions below currently rely on all chips having * the same geometry so we'll just assume that all hardware @@ -654,8 +700,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr break; if (time_after(jiffies, timeo)) { - printk(KERN_ERR "Waiting for chip to be ready timed out. Status %lx\n", - status.x[0]); + printk(KERN_ERR "%s: Waiting for chip to be ready timed out. Status %lx\n", + map->name, status.x[0]); return -EIO; } spin_unlock(chip->mutex); @@ -664,7 +710,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr /* Someone else might have been playing with it. */ goto retry; } - + case FL_READY: case FL_CFI_QUERY: case FL_JEDEC_QUERY: @@ -702,8 +748,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr map_write(map, CMD(0x70), adr); chip->state = FL_ERASING; chip->oldstate = FL_READY; - printk(KERN_ERR "Chip not ready after erase " - "suspended: status = 0x%lx\n", status.x[0]); + printk(KERN_ERR "%s: Chip not ready after erase " + "suspended: status = 0x%lx\n", map->name, status.x[0]); return -EIO; } @@ -783,14 +829,14 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad switch(chip->oldstate) { case FL_ERASING: chip->state = chip->oldstate; - /* What if one interleaved chip has finished and the + /* What if one interleaved chip has finished and the other hasn't? The old code would leave the finished - one in READY mode. That's bad, and caused -EROFS + one in READY mode. That's bad, and caused -EROFS errors to be returned from do_erase_oneblock because that's the only bit it checked for at the time. - As the state machine appears to explicitly allow + As the state machine appears to explicitly allow sending the 0x70 (Read Status) command to an erasing - chip and expecting it to be ignored, that's what we + chip and expecting it to be ignored, that's what we do. */ map_write(map, CMD(0xd0), adr); map_write(map, CMD(0x70), adr); @@ -810,7 +856,7 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad DISABLE_VPP(map); break; default: - printk(KERN_ERR "put_chip() called with oldstate %d!!\n", chip->oldstate); + printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", map->name, chip->oldstate); } wake_up(&chip->wq); } @@ -1026,8 +1072,8 @@ static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t a adr += chip->start; - /* Ensure cmd read/writes are aligned. */ - cmd_addr = adr & ~(map_bankwidth(map)-1); + /* Ensure cmd read/writes are aligned. */ + cmd_addr = adr & ~(map_bankwidth(map)-1); spin_lock(chip->mutex); @@ -1055,7 +1101,7 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si if (!map->virt || (from + len > mtd->size)) return -EINVAL; - + *mtdbuf = (void *)map->virt + from; *retlen = 0; @@ -1082,7 +1128,7 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si *retlen += thislen; len -= thislen; - + ofs = 0; chipnum++; } @@ -1121,7 +1167,7 @@ static void cfi_intelext_unpoint (struct mtd_info *mtd, u_char *addr, loff_t fro if(chip->ref_point_counter == 0) chip->state = FL_READY; } else - printk(KERN_ERR "Warning: unpoint called on non pointed region\n"); /* Should this give an error? */ + printk(KERN_ERR "%s: Warning: unpoint called on non pointed region\n", map->name); /* Should this give an error? */ put_chip(map, chip, chip->start); spin_unlock(chip->mutex); @@ -1140,8 +1186,8 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof adr += chip->start; - /* Ensure cmd read/writes are aligned. */ - cmd_addr = adr & ~(map_bankwidth(map)-1); + /* Ensure cmd read/writes are aligned. */ + cmd_addr = adr & ~(map_bankwidth(map)-1); spin_lock(chip->mutex); ret = get_chip(map, chip, cmd_addr, FL_READY); @@ -1196,7 +1242,7 @@ static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, siz *retlen += thislen; len -= thislen; buf += thislen; - + ofs = 0; chipnum++; } @@ -1213,12 +1259,17 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, adr += chip->start; - /* Let's determine this according to the interleave only once */ + /* Let's determine those according to the interleave only once */ status_OK = CMD(0x80); switch (mode) { - case FL_WRITING: write_cmd = CMD(0x40); break; - case FL_OTP_WRITE: write_cmd = CMD(0xc0); break; - default: return -EINVAL; + case FL_WRITING: + write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0x40) : CMD(0x41); + break; + case FL_OTP_WRITE: + write_cmd = CMD(0xc0); + break; + default: + return -EINVAL; } spin_lock(chip->mutex); @@ -1259,12 +1310,13 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { + map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; xip_enable(map, chip, adr); - printk(KERN_ERR "waiting for chip to be ready timed out in word write\n"); + printk(KERN_ERR "%s: word write error (status timeout)\n", map->name); ret = -EIO; goto out; } @@ -1276,27 +1328,39 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, if (!z) { chip->word_write_time--; if (!chip->word_write_time) - chip->word_write_time++; + chip->word_write_time = 1; } - if (z > 1) + if (z > 1) chip->word_write_time++; /* Done and happy. */ chip->state = FL_STATUS; - /* check for lock bit */ - if (map_word_bitsset(map, status, CMD(0x02))) { - /* clear status */ + /* check for errors */ + if (map_word_bitsset(map, status, CMD(0x1a))) { + unsigned long chipstatus = MERGESTATUS(status); + + /* reset status */ map_write(map, CMD(0x50), adr); - /* put back into read status register mode */ map_write(map, CMD(0x70), adr); - ret = -EROFS; + xip_enable(map, chip, adr); + + if (chipstatus & 0x02) { + ret = -EROFS; + } else if (chipstatus & 0x08) { + printk(KERN_ERR "%s: word write error (bad VPP)\n", map->name); + ret = -EIO; + } else { + printk(KERN_ERR "%s: word write error (status 0x%lx)\n", map->name, chipstatus); + ret = -EINVAL; + } + + goto out; } xip_enable(map, chip, adr); out: put_chip(map, chip, adr); spin_unlock(chip->mutex); - return ret; } @@ -1329,7 +1393,7 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le ret = do_write_oneword(map, &cfi->chips[chipnum], bus_ofs, datum, FL_WRITING); - if (ret) + if (ret) return ret; len -= n; @@ -1338,13 +1402,13 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le (*retlen) += n; if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; } } - + while(len >= map_bankwidth(map)) { map_word datum = map_word_load(map, buf); @@ -1359,7 +1423,7 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le len -= map_bankwidth(map); if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; @@ -1374,9 +1438,9 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le ret = do_write_oneword(map, &cfi->chips[chipnum], ofs, datum, FL_WRITING); - if (ret) + if (ret) return ret; - + (*retlen) += len; } @@ -1384,20 +1448,24 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le } -static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, - unsigned long adr, const u_char *buf, int len) +static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, + unsigned long adr, const struct kvec **pvec, + unsigned long *pvec_seek, int len) { struct cfi_private *cfi = map->fldrv_priv; - map_word status, status_OK; + map_word status, status_OK, write_cmd, datum; unsigned long cmd_adr, timeo; - int wbufsize, z, ret=0, bytes, words; + int wbufsize, z, ret=0, word_gap, words; + const struct kvec *vec; + unsigned long vec_seek; wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; adr += chip->start; cmd_adr = adr & ~(wbufsize-1); - + /* Let's determine this according to the interleave only once */ status_OK = CMD(0x80); + write_cmd = (cfi->cfiq->P_ID != 0x0200) ? CMD(0xe8) : CMD(0xe9); spin_lock(chip->mutex); ret = get_chip(map, chip, cmd_adr, FL_WRITING); @@ -1411,7 +1479,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, xip_disable(map, chip, cmd_adr); /* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set - [...], the device will not accept any more Write to Buffer commands". + [...], the device will not accept any more Write to Buffer commands". So we must check here and reset those bits if they're set. Otherwise we're just pissing in the wind */ if (chip->state != FL_STATUS) @@ -1429,7 +1497,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, z = 0; for (;;) { - map_write(map, CMD(0xe8), cmd_adr); + map_write(map, write_cmd, cmd_adr); status = map_read(map, cmd_adr); if (map_word_andequal(map, status, status_OK, status_OK)) @@ -1447,41 +1515,66 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, map_write(map, CMD(0x50), cmd_adr); map_write(map, CMD(0x70), cmd_adr); xip_enable(map, chip, cmd_adr); - printk(KERN_ERR "Chip not ready for buffer write. status = %lx, Xstatus = %lx\n", - status.x[0], Xstatus.x[0]); + printk(KERN_ERR "%s: Chip not ready for buffer write. status = %lx, Xstatus = %lx\n", + map->name, status.x[0], Xstatus.x[0]); ret = -EIO; goto out; } } + /* Figure out the number of words to write */ + word_gap = (-adr & (map_bankwidth(map)-1)); + words = (len - word_gap + map_bankwidth(map) - 1) / map_bankwidth(map); + if (!word_gap) { + words--; + } else { + word_gap = map_bankwidth(map) - word_gap; + adr -= word_gap; + datum = map_word_ff(map); + } + /* Write length of data to come */ - bytes = len & (map_bankwidth(map)-1); - words = len / map_bankwidth(map); - map_write(map, CMD(words - !bytes), cmd_adr ); + map_write(map, CMD(words), cmd_adr ); /* Write data */ - z = 0; - while(z < words * map_bankwidth(map)) { - map_word datum = map_word_load(map, buf); - map_write(map, datum, adr+z); + vec = *pvec; + vec_seek = *pvec_seek; + do { + int n = map_bankwidth(map) - word_gap; + if (n > vec->iov_len - vec_seek) + n = vec->iov_len - vec_seek; + if (n > len) + n = len; - z += map_bankwidth(map); - buf += map_bankwidth(map); - } + if (!word_gap && len < map_bankwidth(map)) + datum = map_word_ff(map); - if (bytes) { - map_word datum; + datum = map_word_load_partial(map, datum, + vec->iov_base + vec_seek, + word_gap, n); - datum = map_word_ff(map); - datum = map_word_load_partial(map, datum, buf, 0, bytes); - map_write(map, datum, adr+z); - } + len -= n; + word_gap += n; + if (!len || word_gap == map_bankwidth(map)) { + map_write(map, datum, adr); + adr += map_bankwidth(map); + word_gap = 0; + } + + vec_seek += n; + if (vec_seek == vec->iov_len) { + vec++; + vec_seek = 0; + } + } while (len); + *pvec = vec; + *pvec_seek = vec_seek; /* GO GO GO */ map_write(map, CMD(0xd0), cmd_adr); chip->state = FL_WRITING; - INVALIDATE_CACHE_UDELAY(map, chip, + INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, len, chip->buffer_write_time); @@ -1507,13 +1600,14 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, /* OK Still waiting */ if (time_after(jiffies, timeo)) { + map_write(map, CMD(0x70), cmd_adr); chip->state = FL_STATUS; xip_enable(map, chip, cmd_adr); - printk(KERN_ERR "waiting for chip to be ready timed out in bufwrite\n"); + printk(KERN_ERR "%s: buffer write error (status timeout)\n", map->name); ret = -EIO; goto out; } - + /* Latency issues. Drop the lock, wait a while and retry */ z++; UDELAY(map, chip, cmd_adr, 1); @@ -1521,21 +1615,34 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, if (!z) { chip->buffer_write_time--; if (!chip->buffer_write_time) - chip->buffer_write_time++; + chip->buffer_write_time = 1; } - if (z > 1) + if (z > 1) chip->buffer_write_time++; /* Done and happy. */ chip->state = FL_STATUS; - /* check for lock bit */ - if (map_word_bitsset(map, status, CMD(0x02))) { - /* clear status */ + /* check for errors */ + if (map_word_bitsset(map, status, CMD(0x1a))) { + unsigned long chipstatus = MERGESTATUS(status); + + /* reset status */ map_write(map, CMD(0x50), cmd_adr); - /* put back into read status register mode */ - map_write(map, CMD(0x70), adr); - ret = -EROFS; + map_write(map, CMD(0x70), cmd_adr); + xip_enable(map, chip, cmd_adr); + + if (chipstatus & 0x02) { + ret = -EROFS; + } else if (chipstatus & 0x08) { + printk(KERN_ERR "%s: buffer write error (bad VPP)\n", map->name); + ret = -EIO; + } else { + printk(KERN_ERR "%s: buffer write error (status 0x%lx)\n", map->name, chipstatus); + ret = -EINVAL; + } + + goto out; } xip_enable(map, chip, cmd_adr); @@ -1544,70 +1651,65 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, return ret; } -static int cfi_intelext_write_buffers (struct mtd_info *mtd, loff_t to, - size_t len, size_t *retlen, const u_char *buf) +static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t *retlen) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; int wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; int ret = 0; int chipnum; - unsigned long ofs; + unsigned long ofs, vec_seek, i; + size_t len = 0; + + for (i = 0; i < count; i++) + len += vecs[i].iov_len; *retlen = 0; if (!len) return 0; chipnum = to >> cfi->chipshift; - ofs = to - (chipnum << cfi->chipshift); - - /* If it's not bus-aligned, do the first word write */ - if (ofs & (map_bankwidth(map)-1)) { - size_t local_len = (-ofs)&(map_bankwidth(map)-1); - if (local_len > len) - local_len = len; - ret = cfi_intelext_write_words(mtd, to, local_len, - retlen, buf); - if (ret) - return ret; - ofs += local_len; - buf += local_len; - len -= local_len; - - if (ofs >> cfi->chipshift) { - chipnum ++; - ofs = 0; - if (chipnum == cfi->numchips) - return 0; - } - } + ofs = to - (chipnum << cfi->chipshift); + vec_seek = 0; - while(len) { + do { /* We must not cross write block boundaries */ int size = wbufsize - (ofs & (wbufsize-1)); if (size > len) size = len; - ret = do_write_buffer(map, &cfi->chips[chipnum], - ofs, buf, size); + ret = do_write_buffer(map, &cfi->chips[chipnum], + ofs, &vecs, &vec_seek, size); if (ret) return ret; ofs += size; - buf += size; (*retlen) += size; len -= size; if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; } - } + } while (len); + return 0; } +static int cfi_intelext_write_buffers (struct mtd_info *mtd, loff_t to, + size_t len, size_t *retlen, const u_char *buf) +{ + struct kvec vec; + + vec.iov_base = (void *) buf; + vec.iov_len = len; + + return cfi_intelext_writev(mtd, &vec, 1, to, retlen); +} + static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { @@ -1673,23 +1775,17 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { - map_word Xstatus; map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; - Xstatus = map_read(map, adr); - /* Clear status bits */ - map_write(map, CMD(0x50), adr); - map_write(map, CMD(0x70), adr); xip_enable(map, chip, adr); - printk(KERN_ERR "waiting for erase at %08lx to complete timed out. status = %lx, Xstatus = %lx.\n", - adr, status.x[0], Xstatus.x[0]); + printk(KERN_ERR "%s: block erase error: (status timeout)\n", map->name); ret = -EIO; goto out; } - + /* Latency issues. Drop the lock, wait a while and retry */ UDELAY(map, chip, adr, 1000000/HZ); } @@ -1699,43 +1795,40 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, chip->state = FL_STATUS; status = map_read(map, adr); - /* check for lock bit */ + /* check for errors */ if (map_word_bitsset(map, status, CMD(0x3a))) { - unsigned long chipstatus; + unsigned long chipstatus = MERGESTATUS(status); /* Reset the error bits */ map_write(map, CMD(0x50), adr); map_write(map, CMD(0x70), adr); xip_enable(map, chip, adr); - chipstatus = MERGESTATUS(status); - if ((chipstatus & 0x30) == 0x30) { - printk(KERN_NOTICE "Chip reports improper command sequence: status 0x%lx\n", chipstatus); - ret = -EIO; + printk(KERN_ERR "%s: block erase error: (bad command sequence, status 0x%lx)\n", map->name, chipstatus); + ret = -EINVAL; } else if (chipstatus & 0x02) { /* Protection bit set */ ret = -EROFS; } else if (chipstatus & 0x8) { /* Voltage */ - printk(KERN_WARNING "Chip reports voltage low on erase: status 0x%lx\n", chipstatus); + printk(KERN_ERR "%s: block erase error: (bad VPP)\n", map->name); ret = -EIO; - } else if (chipstatus & 0x20) { - if (retries--) { - printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus); - timeo = jiffies + HZ; - put_chip(map, chip, adr); - spin_unlock(chip->mutex); - goto retry; - } - printk(KERN_DEBUG "Chip erase failed at 0x%08lx: status 0x%lx\n", adr, chipstatus); + } else if (chipstatus & 0x20 && retries--) { + printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus); + timeo = jiffies + HZ; + put_chip(map, chip, adr); + spin_unlock(chip->mutex); + goto retry; + } else { + printk(KERN_ERR "%s: block erase failed at 0x%08lx (status 0x%lx)\n", map->name, adr, chipstatus); ret = -EIO; } - } else { - xip_enable(map, chip, adr); - ret = 0; + + goto out; } + xip_enable(map, chip, adr); out: put_chip(map, chip, adr); spin_unlock(chip->mutex); return ret; @@ -1755,7 +1848,7 @@ int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); - + return 0; } @@ -1776,7 +1869,7 @@ static void cfi_intelext_sync (struct mtd_info *mtd) if (!ret) { chip->oldstate = chip->state; chip->state = FL_SYNCING; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1790,7 +1883,7 @@ static void cfi_intelext_sync (struct mtd_info *mtd) chip = &cfi->chips[i]; spin_lock(chip->mutex); - + if (chip->state == FL_SYNCING) { chip->state = chip->oldstate; chip->oldstate = FL_READY; @@ -1847,7 +1940,7 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip ENABLE_VPP(map); xip_disable(map, chip, adr); - + map_write(map, CMD(0x60), adr); if (thunk == DO_XXLOCK_ONEBLOCK_LOCK) { map_write(map, CMD(0x01), adr); @@ -1875,25 +1968,22 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { - map_word Xstatus; map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; - Xstatus = map_read(map, adr); xip_enable(map, chip, adr); - printk(KERN_ERR "waiting for unlock to complete timed out. status = %lx, Xstatus = %lx.\n", - status.x[0], Xstatus.x[0]); + printk(KERN_ERR "%s: block unlock error: (status timeout)\n", map->name); put_chip(map, chip, adr); spin_unlock(chip->mutex); return -EIO; } - + /* Latency issues. Drop the lock, wait a while and retry */ UDELAY(map, chip, adr, 1); } - + /* Done and happy. */ chip->state = FL_STATUS; xip_enable(map, chip, adr); @@ -1913,9 +2003,9 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len) ofs, len, 0); #endif - ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, + ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, ofs, len, DO_XXLOCK_ONEBLOCK_LOCK); - + #ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status after, ret=%d\n", __FUNCTION__, ret); @@ -1939,20 +2029,20 @@ static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, ofs, len, DO_XXLOCK_ONEBLOCK_UNLOCK); - + #ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status after, ret=%d\n", __FUNCTION__, ret); - cfi_varsize_frob(mtd, do_printlockstatus_oneblock, + cfi_varsize_frob(mtd, do_printlockstatus_oneblock, ofs, len, 0); #endif - + return ret; } #ifdef CONFIG_MTD_OTP -typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip, +typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip, u_long data_offset, u_char *buf, u_int size, u_long prot_offset, u_int groupno, u_int groupsize); @@ -2003,7 +2093,7 @@ do_otp_write(struct map_info *map, struct flchip *chip, u_long offset, datum = map_word_load_partial(map, datum, buf, gap, n); ret = do_write_oneword(map, chip, bus_ofs, datum, FL_OTP_WRITE); - if (ret) + if (ret) return ret; offset += n; @@ -2196,7 +2286,7 @@ static int cfi_intelext_lock_user_prot_reg(struct mtd_info *mtd, NULL, do_otp_lock, 1); } -static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd, +static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf, size_t len) { size_t retlen; @@ -2239,7 +2329,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd) if (chip->oldstate == FL_READY) { chip->oldstate = chip->state; chip->state = FL_PM_SUSPENDED; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -2267,9 +2357,9 @@ static int cfi_intelext_suspend(struct mtd_info *mtd) if (ret) { for (i--; i >=0; i--) { chip = &cfi->chips[i]; - + spin_lock(chip->mutex); - + if (chip->state == FL_PM_SUSPENDED) { /* No need to force it into a known state here, because we're returning failure, and it didn't @@ -2280,8 +2370,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd) } spin_unlock(chip->mutex); } - } - + } + return ret; } @@ -2293,11 +2383,11 @@ static void cfi_intelext_resume(struct mtd_info *mtd) struct flchip *chip; for (i=0; i<cfi->numchips; i++) { - + chip = &cfi->chips[i]; spin_lock(chip->mutex); - + /* Go to known state. Chip may have been power cycled */ if (chip->state == FL_PM_SUSPENDED) { map_write(map, CMD(0xFF), cfi->chips[i].start); @@ -2319,7 +2409,7 @@ static int cfi_intelext_reset(struct mtd_info *mtd) struct flchip *chip = &cfi->chips[i]; /* force the completion of any ongoing operation - and switch to array mode so any bootloader in + and switch to array mode so any bootloader in flash is accessible for soft reboot. */ spin_lock(chip->mutex); ret = get_chip(map, chip, chip->start, FL_SYNCING); @@ -2356,20 +2446,23 @@ static void cfi_intelext_destroy(struct mtd_info *mtd) kfree(mtd->eraseregions); } -static char im_name_1[]="cfi_cmdset_0001"; -static char im_name_3[]="cfi_cmdset_0003"; +static char im_name_0001[] = "cfi_cmdset_0001"; +static char im_name_0003[] = "cfi_cmdset_0003"; +static char im_name_0200[] = "cfi_cmdset_0200"; static int __init cfi_intelext_init(void) { - inter_module_register(im_name_1, THIS_MODULE, &cfi_cmdset_0001); - inter_module_register(im_name_3, THIS_MODULE, &cfi_cmdset_0001); + inter_module_register(im_name_0001, THIS_MODULE, &cfi_cmdset_0001); + inter_module_register(im_name_0003, THIS_MODULE, &cfi_cmdset_0001); + inter_module_register(im_name_0200, THIS_MODULE, &cfi_cmdset_0001); return 0; } static void __exit cfi_intelext_exit(void) { - inter_module_unregister(im_name_1); - inter_module_unregister(im_name_3); + inter_module_unregister(im_name_0001); + inter_module_unregister(im_name_0003); + inter_module_unregister(im_name_0200); } module_init(cfi_intelext_init); diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 8505f118f2d..aed10bd5c3c 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -10,14 +10,14 @@ * * 4_by_16 work by Carolyn J. Smith * - * XIP support hooks by Vitaly Wool (based on code for Intel flash + * XIP support hooks by Vitaly Wool (based on code for Intel flash * by Nicolas Pitre) - * + * * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com * * This code is GPL * - * $Id: cfi_cmdset_0002.c,v 1.118 2005/07/04 22:34:29 gleixner Exp $ + * $Id: cfi_cmdset_0002.c,v 1.122 2005/11/07 11:14:22 gleixner Exp $ * */ @@ -93,7 +93,7 @@ static void cfi_tell_features(struct cfi_pri_amdstd *extp) }; printk(" Silicon revision: %d\n", extp->SiliconRevision >> 1); - printk(" Address sensitive unlock: %s\n", + printk(" Address sensitive unlock: %s\n", (extp->SiliconRevision & 1) ? "Not required" : "Required"); if (extp->EraseSuspend < ARRAY_SIZE(erase_suspend)) @@ -118,9 +118,9 @@ static void cfi_tell_features(struct cfi_pri_amdstd *extp) else printk(" Page mode: %d word page\n", extp->PageMode << 2); - printk(" Vpp Supply Minimum Program/Erase Voltage: %d.%d V\n", + printk(" Vpp Supply Minimum Program/Erase Voltage: %d.%d V\n", extp->VppMin >> 4, extp->VppMin & 0xf); - printk(" Vpp Supply Maximum Program/Erase Voltage: %d.%d V\n", + printk(" Vpp Supply Maximum Program/Erase Voltage: %d.%d V\n", extp->VppMax >> 4, extp->VppMax & 0xf); if (extp->TopBottom < ARRAY_SIZE(top_bottom)) @@ -177,7 +177,7 @@ static void fixup_use_erase_chip(struct mtd_info *mtd, void *param) ((cfi->cfiq->EraseRegionInfo[0] & 0xffff) == 0)) { mtd->erase = cfi_amdstd_erase_chip; } - + } static struct cfi_fixup cfi_fixup_table[] = { @@ -239,7 +239,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) if (cfi->cfi_mode==CFI_MODE_CFI){ unsigned char bootloc; - /* + /* * It's a real CFI chip, not one for which the probe * routine faked a CFI structure. So we read the feature * table from it. @@ -253,8 +253,18 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) return NULL; } + if (extp->MajorVersion != '1' || + (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { + printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query " + "version %c.%c.\n", extp->MajorVersion, + extp->MinorVersion); + kfree(extp); + kfree(mtd); + return NULL; + } + /* Install our own private info structure */ - cfi->cmdset_priv = extp; + cfi->cmdset_priv = extp; /* Apply cfi device specific fixups */ cfi_fixup(mtd, cfi_fixup_table); @@ -262,7 +272,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) #ifdef DEBUG_CFI_FEATURES /* Tell the user about it in lots of lovely detail */ cfi_tell_features(extp); -#endif +#endif bootloc = extp->TopBottom; if ((bootloc != 2) && (bootloc != 3)) { @@ -273,11 +283,11 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) if (bootloc == 3 && cfi->cfiq->NumEraseRegions > 1) { printk(KERN_WARNING "%s: Swapping erase regions for broken CFI table.\n", map->name); - + for (i=0; i<cfi->cfiq->NumEraseRegions / 2; i++) { int j = (cfi->cfiq->NumEraseRegions-1)-i; __u32 swap; - + swap = cfi->cfiq->EraseRegionInfo[i]; cfi->cfiq->EraseRegionInfo[i] = cfi->cfiq->EraseRegionInfo[j]; cfi->cfiq->EraseRegionInfo[j] = swap; @@ -288,11 +298,11 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) cfi->addr_unlock2 = 0x2aa; /* Modify the unlock address if we are in compatibility mode */ if ( /* x16 in x8 mode */ - ((cfi->device_type == CFI_DEVICETYPE_X8) && + ((cfi->device_type == CFI_DEVICETYPE_X8) && (cfi->cfiq->InterfaceDesc == 2)) || /* x32 in x16 mode */ ((cfi->device_type == CFI_DEVICETYPE_X16) && - (cfi->cfiq->InterfaceDesc == 4))) + (cfi->cfiq->InterfaceDesc == 4))) { cfi->addr_unlock1 = 0xaaa; cfi->addr_unlock2 = 0x555; @@ -310,10 +320,10 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp; cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp; cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp; - } - + } + map->fldrv = &cfi_amdstd_chipdrv; - + return cfi_amdstd_setup(mtd); } @@ -326,24 +336,24 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) unsigned long offset = 0; int i,j; - printk(KERN_NOTICE "number of %s chips: %d\n", + printk(KERN_NOTICE "number of %s chips: %d\n", (cfi->cfi_mode == CFI_MODE_CFI)?"CFI":"JEDEC",cfi->numchips); - /* Select the correct geometry setup */ + /* Select the correct geometry setup */ mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) * mtd->numeraseregions, GFP_KERNEL); - if (!mtd->eraseregions) { + if (!mtd->eraseregions) { printk(KERN_WARNING "Failed to allocate memory for MTD erase region info\n"); goto setup_err; } - + for (i=0; i<cfi->cfiq->NumEraseRegions; i++) { unsigned long ernum, ersize; ersize = ((cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff) * cfi->interleave; ernum = (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1; - + if (mtd->erasesize < ersize) { mtd->erasesize = ersize; } @@ -378,8 +388,7 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) setup_err: if(mtd) { - if(mtd->eraseregions) - kfree(mtd->eraseregions); + kfree(mtd->eraseregions); kfree(mtd); } kfree(cfi->cmdset_priv); @@ -430,7 +439,7 @@ static int __xipram chip_good(struct map_info *map, unsigned long addr, map_word oldd = map_read(map, addr); curd = map_read(map, addr); - return map_word_equal(map, oldd, curd) && + return map_word_equal(map, oldd, curd) && map_word_equal(map, curd, expected); } @@ -462,7 +471,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr /* Someone else might have been playing with it. */ goto retry; } - + case FL_READY: case FL_CFI_QUERY: case FL_JEDEC_QUERY: @@ -505,7 +514,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr printk(KERN_ERR "MTD %s(): chip not ready after erase suspend\n", __func__); return -EIO; } - + spin_unlock(chip->mutex); cfi_udelay(1); spin_lock(chip->mutex); @@ -608,7 +617,7 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip, * When a delay is required for the flash operation to complete, the * xip_udelay() function is polling for both the given timeout and pending * (but still masked) hardware interrupts. Whenever there is an interrupt - * pending then the flash erase operation is suspended, array mode restored + * pending then the flash erase operation is suspended, array mode restored * and interrupts unmasked. Task scheduling might also happen at that * point. The CPU eventually returns from the interrupt or the call to * schedule() and the suspended flash operation is resumed for the remaining @@ -632,9 +641,9 @@ static void __xipram xip_udelay(struct map_info *map, struct flchip *chip, ((chip->state == FL_ERASING && (extp->EraseSuspend & 2))) && (cfi_interleave_is_1(cfi) || chip->oldstate == FL_READY)) { /* - * Let's suspend the erase operation when supported. - * Note that we currently don't try to suspend - * interleaved chips if there is already another + * Let's suspend the erase operation when supported. + * Note that we currently don't try to suspend + * interleaved chips if there is already another * operation suspended (imagine what happens * when one chip was already done with the current * operation while another chip suspended it, then @@ -770,8 +779,8 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof adr += chip->start; - /* Ensure cmd read/writes are aligned. */ - cmd_addr = adr & ~(map_bankwidth(map)-1); + /* Ensure cmd read/writes are aligned. */ + cmd_addr = adr & ~(map_bankwidth(map)-1); spin_lock(chip->mutex); ret = get_chip(map, chip, cmd_addr, FL_READY); @@ -851,7 +860,7 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi #endif set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); - + spin_unlock(chip->mutex); schedule(); @@ -863,7 +872,7 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi timeo = jiffies + HZ; goto retry; - } + } adr += chip->start; @@ -872,14 +881,14 @@ static inline int do_read_secsi_onechip(struct map_info *map, struct flchip *chi cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x88, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); - + map_copy_from(map, buf, adr, len); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x90, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x00, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); - + wake_up(&chip->wq); spin_unlock(chip->mutex); @@ -988,7 +997,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, chip->word_write_time); /* See comment above for timeout value. */ - timeo = jiffies + uWriteTimeout; + timeo = jiffies + uWriteTimeout; for (;;) { if (chip->state != FL_WRITING) { /* Someone's suspended the write. Sleep */ @@ -1004,16 +1013,16 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, continue; } - if (chip_ready(map, adr)) - break; - - if (time_after(jiffies, timeo)) { + if (time_after(jiffies, timeo) && !chip_ready(map, adr)){ xip_enable(map, chip, adr); printk(KERN_WARNING "MTD %s(): software timeout\n", __func__); xip_disable(map, chip, adr); - break; + break; } + if (chip_ready(map, adr)) + break; + /* Latency issues. Drop the lock, wait a while and retry */ UDELAY(map, chip, adr, 1); } @@ -1023,7 +1032,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, map_write( map, CMD(0xF0), chip->start ); /* FIXME - should have reset delay before continuing */ - if (++retry_cnt <= MAX_WORD_RETRIES) + if (++retry_cnt <= MAX_WORD_RETRIES) goto retry; ret = -EIO; @@ -1091,27 +1100,27 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, /* Number of bytes to copy from buffer */ n = min_t(int, len, map_bankwidth(map)-i); - + tmp_buf = map_word_load_partial(map, tmp_buf, buf, i, n); - ret = do_write_oneword(map, &cfi->chips[chipnum], + ret = do_write_oneword(map, &cfi->chips[chipnum], bus_ofs, tmp_buf); - if (ret) + if (ret) return ret; - + ofs += n; buf += n; (*retlen) += n; len -= n; if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; } } - + /* We are now aligned, write as much as possible */ while(len >= map_bankwidth(map)) { map_word datum; @@ -1129,7 +1138,7 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, len -= map_bankwidth(map); if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; @@ -1167,12 +1176,12 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, spin_unlock(cfi->chips[chipnum].mutex); tmp_buf = map_word_load_partial(map, tmp_buf, buf, 0, len); - - ret = do_write_oneword(map, &cfi->chips[chipnum], + + ret = do_write_oneword(map, &cfi->chips[chipnum], ofs, tmp_buf); - if (ret) + if (ret) return ret; - + (*retlen) += len; } @@ -1184,7 +1193,7 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len, * FIXME: interleaved mode not tested, and probably not supported! */ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, - unsigned long adr, const u_char *buf, + unsigned long adr, const u_char *buf, int len) { struct cfi_private *cfi = map->fldrv_priv; @@ -1214,7 +1223,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, XIP_INVAL_CACHED_RANGE(map, adr, len); ENABLE_VPP(map); xip_disable(map, chip, cmd_adr); - + cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL); //cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); @@ -1248,8 +1257,8 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, adr, map_bankwidth(map), chip->word_write_time); - timeo = jiffies + uWriteTimeout; - + timeo = jiffies + uWriteTimeout; + for (;;) { if (chip->state != FL_WRITING) { /* Someone's suspended the write. Sleep */ @@ -1265,13 +1274,13 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, continue; } + if (time_after(jiffies, timeo) && !chip_ready(map, adr)) + break; + if (chip_ready(map, adr)) { xip_enable(map, chip, adr); goto op_done; } - - if( time_after(jiffies, timeo)) - break; /* Latency issues. Drop the lock, wait a while and retry */ UDELAY(map, chip, adr, 1); @@ -1343,7 +1352,7 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len, if (size % map_bankwidth(map)) size -= size % map_bankwidth(map); - ret = do_write_buffer(map, &cfi->chips[chipnum], + ret = do_write_buffer(map, &cfi->chips[chipnum], ofs, buf, size); if (ret) return ret; @@ -1354,7 +1363,7 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len, len -= size; if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; @@ -1571,7 +1580,7 @@ int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); - + return 0; } @@ -1594,7 +1603,7 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr) instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); - + return 0; } @@ -1621,7 +1630,7 @@ static void cfi_amdstd_sync (struct mtd_info *mtd) case FL_JEDEC_QUERY: chip->oldstate = chip->state; chip->state = FL_SYNCING; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1632,13 +1641,13 @@ static void cfi_amdstd_sync (struct mtd_info *mtd) default: /* Not an idle state */ add_wait_queue(&chip->wq, &wait); - + spin_unlock(chip->mutex); schedule(); remove_wait_queue(&chip->wq, &wait); - + goto retry; } } @@ -1649,7 +1658,7 @@ static void cfi_amdstd_sync (struct mtd_info *mtd) chip = &cfi->chips[i]; spin_lock(chip->mutex); - + if (chip->state == FL_SYNCING) { chip->state = chip->oldstate; wake_up(&chip->wq); @@ -1679,7 +1688,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd) case FL_JEDEC_QUERY: chip->oldstate = chip->state; chip->state = FL_PM_SUSPENDED; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1700,7 +1709,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd) chip = &cfi->chips[i]; spin_lock(chip->mutex); - + if (chip->state == FL_PM_SUSPENDED) { chip->state = chip->oldstate; wake_up(&chip->wq); @@ -1708,7 +1717,7 @@ static int cfi_amdstd_suspend(struct mtd_info *mtd) spin_unlock(chip->mutex); } } - + return ret; } @@ -1721,11 +1730,11 @@ static void cfi_amdstd_resume(struct mtd_info *mtd) struct flchip *chip; for (i=0; i<cfi->numchips; i++) { - + chip = &cfi->chips[i]; spin_lock(chip->mutex); - + if (chip->state == FL_PM_SUSPENDED) { chip->state = FL_READY; map_write(map, CMD(0xF0), chip->start); @@ -1742,6 +1751,7 @@ static void cfi_amdstd_destroy(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; + kfree(cfi->cmdset_priv); kfree(cfi->cfiq); kfree(cfi); diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index c894f880157..c4a19d2dc67 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -4,8 +4,8 @@ * * (C) 2000 Red Hat. GPL'd * - * $Id: cfi_cmdset_0020.c,v 1.19 2005/07/13 15:52:45 dwmw2 Exp $ - * + * $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.) @@ -81,17 +81,17 @@ static void cfi_tell_features(struct cfi_pri_intelext *extp) printk(" - Page-mode read: %s\n", extp->FeatureSupport&128?"supported":"unsupported"); printk(" - Synchronous read: %s\n", extp->FeatureSupport&256?"supported":"unsupported"); for (i=9; i<32; i++) { - if (extp->FeatureSupport & (1<<i)) + if (extp->FeatureSupport & (1<<i)) printk(" - Unknown Bit %X: supported\n", i); } - + printk(" Supported functions after Suspend: %2.2X\n", extp->SuspendCmdSupport); printk(" - Program after Erase Suspend: %s\n", extp->SuspendCmdSupport&1?"supported":"unsupported"); for (i=1; i<8; i++) { if (extp->SuspendCmdSupport & (1<<i)) printk(" - Unknown Bit %X: supported\n", i); } - + printk(" Block Status Register Mask: %4.4X\n", extp->BlkStatusRegMask); printk(" - Lock Bit Active: %s\n", extp->BlkStatusRegMask&1?"yes":"no"); printk(" - Valid Bit Active: %s\n", extp->BlkStatusRegMask&2?"yes":"no"); @@ -99,11 +99,11 @@ static void cfi_tell_features(struct cfi_pri_intelext *extp) if (extp->BlkStatusRegMask & (1<<i)) printk(" - Unknown Bit %X Active: yes\n",i); } - - printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n", + + printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V\n", extp->VccOptimal >> 8, extp->VccOptimal & 0xf); if (extp->VppOptimal) - printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n", + printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V\n", extp->VppOptimal >> 8, extp->VppOptimal & 0xf); } #endif @@ -121,7 +121,7 @@ struct mtd_info *cfi_cmdset_0020(struct map_info *map, int primary) int i; if (cfi->cfi_mode) { - /* + /* * It's a real CFI chip, not one for which the probe * routine faked a CFI structure. So we read the feature * table from it. @@ -133,24 +133,33 @@ struct mtd_info *cfi_cmdset_0020(struct map_info *map, int primary) if (!extp) return NULL; + if (extp->MajorVersion != '1' || + (extp->MinorVersion < '0' || extp->MinorVersion > '3')) { + printk(KERN_ERR " Unknown ST Microelectronics" + " Extended Query version %c.%c.\n", + extp->MajorVersion, extp->MinorVersion); + kfree(extp); + return NULL; + } + /* Do some byteswapping if necessary */ extp->FeatureSupport = cfi32_to_cpu(extp->FeatureSupport); extp->BlkStatusRegMask = cfi32_to_cpu(extp->BlkStatusRegMask); - + #ifdef DEBUG_CFI_FEATURES /* Tell the user about it in lots of lovely detail */ cfi_tell_features(extp); -#endif +#endif /* Install our own private info structure */ cfi->cmdset_priv = extp; - } + } for (i=0; i< cfi->numchips; i++) { cfi->chips[i].word_write_time = 128; cfi->chips[i].buffer_write_time = 128; cfi->chips[i].erase_time = 1024; - } + } return cfi_staa_setup(map); } @@ -178,15 +187,15 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) + mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) * mtd->numeraseregions, GFP_KERNEL); - if (!mtd->eraseregions) { + if (!mtd->eraseregions) { printk(KERN_ERR "Failed to allocate memory for MTD erase region info\n"); kfree(cfi->cmdset_priv); kfree(mtd); return NULL; } - + for (i=0; i<cfi->cfiq->NumEraseRegions; i++) { unsigned long ernum, ersize; ersize = ((cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff) * cfi->interleave; @@ -219,7 +228,7 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) mtd->eraseregions[i].numblocks); } - /* Also select the correct geometry setup too */ + /* Also select the correct geometry setup too */ mtd->erase = cfi_staa_erase_varsize; mtd->read = cfi_staa_read; mtd->write = cfi_staa_write_buffers; @@ -250,8 +259,8 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof adr += chip->start; - /* Ensure cmd read/writes are aligned. */ - cmd_addr = adr & ~(map_bankwidth(map)-1); + /* Ensure cmd read/writes are aligned. */ + cmd_addr = adr & ~(map_bankwidth(map)-1); /* Let's determine this according to the interleave only once */ status_OK = CMD(0x80); @@ -267,7 +276,7 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof case FL_ERASING: if (!(((struct cfi_pri_intelext *)cfi->cmdset_priv)->FeatureSupport & 2)) goto sleep; /* We don't support erase suspend */ - + map_write (map, CMD(0xb0), cmd_addr); /* If the flash has finished erasing, then 'erase suspend' * appears to make some (28F320) flash devices switch to @@ -282,7 +291,7 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof status = map_read(map, cmd_addr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + if (time_after(jiffies, timeo)) { /* Urgh */ map_write(map, CMD(0xd0), cmd_addr); @@ -294,17 +303,17 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof "suspended: status = 0x%lx\n", status.x[0]); return -EIO; } - + spin_unlock_bh(chip->mutex); cfi_udelay(1); spin_lock_bh(chip->mutex); } - + suspended = 1; map_write(map, CMD(0xff), cmd_addr); chip->state = FL_READY; break; - + #if 0 case FL_WRITING: /* Not quite yet */ @@ -325,7 +334,7 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof chip->state = FL_READY; break; } - + /* Urgh. Chip not yet ready to talk to us. */ if (time_after(jiffies, timeo)) { spin_unlock_bh(chip->mutex); @@ -355,17 +364,17 @@ static inline int do_read_onechip(struct map_info *map, struct flchip *chip, lof if (suspended) { chip->state = chip->oldstate; - /* What if one interleaved chip has finished and the + /* What if one interleaved chip has finished and the other hasn't? The old code would leave the finished - one in READY mode. That's bad, and caused -EROFS + one in READY mode. That's bad, and caused -EROFS errors to be returned from do_erase_oneblock because that's the only bit it checked for at the time. - As the state machine appears to explicitly allow + As the state machine appears to explicitly allow sending the 0x70 (Read Status) command to an erasing - chip and expecting it to be ignored, that's what we + chip and expecting it to be ignored, that's what we do. */ map_write(map, CMD(0xd0), cmd_addr); - map_write(map, CMD(0x70), cmd_addr); + map_write(map, CMD(0x70), cmd_addr); } wake_up(&chip->wq); @@ -405,14 +414,14 @@ static int cfi_staa_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen += thislen; len -= thislen; buf += thislen; - + ofs = 0; chipnum++; } return ret; } -static inline int do_write_buffer(struct map_info *map, struct flchip *chip, +static inline int do_write_buffer(struct map_info *map, struct flchip *chip, unsigned long adr, const u_char *buf, int len) { struct cfi_private *cfi = map->fldrv_priv; @@ -420,7 +429,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, unsigned long cmd_adr, timeo; DECLARE_WAITQUEUE(wait, current); int wbufsize, z; - + /* M58LW064A requires bus alignment for buffer wriets -- saw */ if (adr & (map_bankwidth(map)-1)) return -EINVAL; @@ -428,10 +437,10 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; adr += chip->start; cmd_adr = adr & ~(wbufsize-1); - + /* Let's determine this according to the interleave only once */ status_OK = CMD(0x80); - + timeo = jiffies + HZ; retry: @@ -439,7 +448,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, printk("%s: chip->state[%d]\n", __FUNCTION__, chip->state); #endif spin_lock_bh(chip->mutex); - + /* Check that the chip's ready to talk to us. * Later, we can actually think about interrupting it * if it's in FL_ERASING state. @@ -448,7 +457,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, switch (chip->state) { case FL_READY: break; - + case FL_CFI_QUERY: case FL_JEDEC_QUERY: map_write(map, CMD(0x70), cmd_adr); @@ -513,7 +522,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, /* Write length of data to come */ map_write(map, CMD(len/map_bankwidth(map)-1), cmd_adr ); - + /* Write data */ for (z = 0; z < len; z += map_bankwidth(map), buf += map_bankwidth(map)) { @@ -560,7 +569,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, printk(KERN_ERR "waiting for chip to be ready timed out in bufwrite\n"); return -EIO; } - + /* Latency issues. Drop the lock, wait a while and retry */ spin_unlock_bh(chip->mutex); cfi_udelay(1); @@ -572,9 +581,9 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, if (!chip->buffer_write_time) chip->buffer_write_time++; } - if (z > 1) + if (z > 1) chip->buffer_write_time++; - + /* Done and happy. */ DISABLE_VPP(map); chip->state = FL_STATUS; @@ -598,7 +607,7 @@ static inline int do_write_buffer(struct map_info *map, struct flchip *chip, return 0; } -static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to, +static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { struct map_info *map = mtd->priv; @@ -620,7 +629,7 @@ static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to, printk("%s: chipnum[%x] wbufsize[%x]\n", __FUNCTION__, chipnum, wbufsize); printk("%s: ofs[%x] len[%x]\n", __FUNCTION__, ofs, len); #endif - + /* Write buffer is worth it only if more than one word to write... */ while (len > 0) { /* We must not cross write block boundaries */ @@ -629,7 +638,7 @@ static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to, if (size > len) size = len; - ret = do_write_buffer(map, &cfi->chips[chipnum], + ret = do_write_buffer(map, &cfi->chips[chipnum], ofs, buf, size); if (ret) return ret; @@ -640,13 +649,13 @@ static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to, len -= size; if (ofs >> cfi->chipshift) { - chipnum ++; + chipnum ++; ofs = 0; if (chipnum == cfi->numchips) return 0; } } - + return 0; } @@ -756,7 +765,7 @@ retry: status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* Urgh. Chip not yet ready to talk to us. */ if (time_after(jiffies, timeo)) { spin_unlock_bh(chip->mutex); @@ -789,7 +798,7 @@ retry: map_write(map, CMD(0x20), adr); map_write(map, CMD(0xD0), adr); chip->state = FL_ERASING; - + spin_unlock_bh(chip->mutex); msleep(1000); spin_lock_bh(chip->mutex); @@ -814,7 +823,7 @@ retry: status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { map_write(map, CMD(0x70), adr); @@ -824,13 +833,13 @@ retry: spin_unlock_bh(chip->mutex); return -EIO; } - + /* Latency issues. Drop the lock, wait a while and retry */ spin_unlock_bh(chip->mutex); cfi_udelay(1); spin_lock_bh(chip->mutex); } - + DISABLE_VPP(map); ret = 0; @@ -855,7 +864,7 @@ retry: /* Reset the error bits */ map_write(map, CMD(0x50), adr); map_write(map, CMD(0x70), adr); - + if ((chipstatus & 0x30) == 0x30) { printk(KERN_NOTICE "Chip reports improper command sequence: status 0x%x\n", chipstatus); ret = -EIO; @@ -904,17 +913,17 @@ int cfi_staa_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) i = 0; - /* Skip all erase regions which are ended before the start of + /* Skip all erase regions which are ended before the start of the requested erase. Actually, to save on the calculations, we skip to the first erase region which starts after the start of the requested erase, and then go back one. */ - + while (i < mtd->numeraseregions && instr->addr >= regions[i].offset) i++; i--; - /* OK, now i is pointing at the erase region in which this + /* OK, now i is pointing at the erase region in which this erase request starts. Check the start of the requested erase range is aligned with the erase size which is in effect here. @@ -937,7 +946,7 @@ int cfi_staa_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) the address actually falls */ i--; - + if ((instr->addr + instr->len) & (regions[i].erasesize-1)) return -EINVAL; @@ -949,7 +958,7 @@ int cfi_staa_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) while(len) { ret = do_erase_oneblock(map, &cfi->chips[chipnum], adr); - + if (ret) return ret; @@ -962,15 +971,15 @@ int cfi_staa_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) if (adr >> cfi->chipshift) { adr = 0; chipnum++; - + if (chipnum >= cfi->numchips) break; } } - + instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); - + return 0; } @@ -996,7 +1005,7 @@ static void cfi_staa_sync (struct mtd_info *mtd) case FL_JEDEC_QUERY: chip->oldstate = chip->state; chip->state = FL_SYNCING; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1007,11 +1016,11 @@ static void cfi_staa_sync (struct mtd_info *mtd) default: /* Not an idle state */ add_wait_queue(&chip->wq, &wait); - + spin_unlock_bh(chip->mutex); schedule(); remove_wait_queue(&chip->wq, &wait); - + goto retry; } } @@ -1022,7 +1031,7 @@ static void cfi_staa_sync (struct mtd_info *mtd) chip = &cfi->chips[i]; spin_lock_bh(chip->mutex); - + if (chip->state == FL_SYNCING) { chip->state = chip->oldstate; wake_up(&chip->wq); @@ -1057,9 +1066,9 @@ retry: case FL_STATUS: status = map_read(map, adr); - if (map_word_andequal(map, status, status_OK, status_OK)) + if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* Urgh. Chip not yet ready to talk to us. */ if (time_after(jiffies, timeo)) { spin_unlock_bh(chip->mutex); @@ -1088,7 +1097,7 @@ retry: map_write(map, CMD(0x60), adr); map_write(map, CMD(0x01), adr); chip->state = FL_LOCKING; - + spin_unlock_bh(chip->mutex); msleep(1000); spin_lock_bh(chip->mutex); @@ -1102,7 +1111,7 @@ retry: status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { map_write(map, CMD(0x70), adr); @@ -1112,13 +1121,13 @@ retry: spin_unlock_bh(chip->mutex); return -EIO; } - + /* Latency issues. Drop the lock, wait a while and retry */ spin_unlock_bh(chip->mutex); cfi_udelay(1); spin_lock_bh(chip->mutex); } - + /* Done and happy. */ chip->state = FL_STATUS; DISABLE_VPP(map); @@ -1162,8 +1171,8 @@ static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len) cfi_send_gen_cmd(0x90, 0x55, 0, map, cfi, cfi->device_type, NULL); printk("after lock: block status register is %x\n",cfi_read_query(map, adr+(2*ofs_factor))); cfi_send_gen_cmd(0xff, 0x55, 0, map, cfi, cfi->device_type, NULL); -#endif - +#endif + if (ret) return ret; @@ -1173,7 +1182,7 @@ static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len) if (adr >> cfi->chipshift) { adr = 0; chipnum++; - + if (chipnum >= cfi->numchips) break; } @@ -1208,7 +1217,7 @@ retry: status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* Urgh. Chip not yet ready to talk to us. */ if (time_after(jiffies, timeo)) { spin_unlock_bh(chip->mutex); @@ -1237,7 +1246,7 @@ retry: map_write(map, CMD(0x60), adr); map_write(map, CMD(0xD0), adr); chip->state = FL_UNLOCKING; - + spin_unlock_bh(chip->mutex); msleep(1000); spin_lock_bh(chip->mutex); @@ -1251,7 +1260,7 @@ retry: status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; - + /* OK Still waiting */ if (time_after(jiffies, timeo)) { map_write(map, CMD(0x70), adr); @@ -1261,13 +1270,13 @@ retry: spin_unlock_bh(chip->mutex); return -EIO; } - + /* Latency issues. Drop the unlock, wait a while and retry */ spin_unlock_bh(chip->mutex); cfi_udelay(1); spin_lock_bh(chip->mutex); } - + /* Done and happy. */ chip->state = FL_STATUS; DISABLE_VPP(map); @@ -1292,7 +1301,7 @@ static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) { unsigned long temp_adr = adr; unsigned long temp_len = len; - + cfi_send_gen_cmd(0x90, 0x55, 0, map, cfi, cfi->device_type, NULL); while (temp_len) { printk("before unlock %x: block status register is %x\n",temp_adr,cfi_read_query(map, temp_adr+(2*ofs_factor))); @@ -1310,7 +1319,7 @@ static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) printk("after unlock: block status register is %x\n",cfi_read_query(map, adr+(2*ofs_factor))); cfi_send_gen_cmd(0xff, 0x55, 0, map, cfi, cfi->device_type, NULL); #endif - + return ret; } @@ -1334,7 +1343,7 @@ static int cfi_staa_suspend(struct mtd_info *mtd) case FL_JEDEC_QUERY: chip->oldstate = chip->state; chip->state = FL_PM_SUSPENDED; - /* No need to wake_up() on this state change - + /* No need to wake_up() on this state change - * as the whole point is that nobody can do anything * with the chip now anyway. */ @@ -1353,9 +1362,9 @@ static int cfi_staa_suspend(struct mtd_info *mtd) if (ret) { for (i--; i >=0; i--) { chip = &cfi->chips[i]; - + spin_lock_bh(chip->mutex); - + if (chip->state == FL_PM_SUSPENDED) { /* No need to force it into a known state here, because we're returning failure, and it didn't @@ -1365,8 +1374,8 @@ static int cfi_staa_suspend(struct mtd_info *mtd) } spin_unlock_bh(chip->mutex); } - } - + } + return ret; } @@ -1378,11 +1387,11 @@ static void cfi_staa_resume(struct mtd_info *mtd) struct flchip *chip; for (i=0; i<cfi->numchips; i++) { - + chip = &cfi->chips[i]; spin_lock_bh(chip->mutex); - + /* Go to known state. Chip may have been power cycled */ if (chip->state == FL_PM_SUSPENDED) { map_write(map, CMD(0xFF), 0); diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c index cf750038ce6..90eb30e06b7 100644 --- a/drivers/mtd/chips/cfi_probe.c +++ b/drivers/mtd/chips/cfi_probe.c @@ -1,7 +1,7 @@ -/* +/* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: cfi_probe.c,v 1.83 2004/11/16 18:19:02 nico Exp $ + $Id: cfi_probe.c,v 1.84 2005/11/07 11:14:23 gleixner Exp $ */ #include <linux/config.h> @@ -20,7 +20,7 @@ #include <linux/mtd/cfi.h> #include <linux/mtd/gen_probe.h> -//#define DEBUG_CFI +//#define DEBUG_CFI #ifdef DEBUG_CFI static void print_cfi_ident(struct cfi_ident *); @@ -103,7 +103,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, unsigned long *chip_map, struct cfi_private *cfi) { int i; - + if ((base + 0) >= map->size) { printk(KERN_NOTICE "Probe at base[0x00](0x%08lx) past the end of the map(0x%08lx)\n", @@ -128,7 +128,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, } if (!cfi->numchips) { - /* This is the first time we're called. Set up the CFI + /* This is the first time we're called. Set up the CFI stuff accordingly and return */ return cfi_chip_setup(map, cfi); } @@ -138,13 +138,13 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, unsigned long start; if(!test_bit(i, chip_map)) { /* Skip location; no valid chip at this address */ - continue; + continue; } start = i << cfi->chipshift; /* This chip should be in read mode if it's one we've already touched. */ if (qry_present(map, start, cfi)) { - /* Eep. This chip also had the QRY marker. + /* Eep. This chip also had the QRY marker. * Is it an alias for the new one? */ cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); @@ -156,13 +156,13 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, map->name, base, start); return 0; } - /* Yes, it's actually got QRY for data. Most + /* Yes, it's actually got QRY for data. Most * unfortunate. Stick the new chip in read mode * too and if it's the same, assume it's an alias. */ /* FIXME: Use other modes to do a proper check */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); - + if (qry_present(map, base, cfi)) { xip_allowed(base, map); printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", @@ -171,12 +171,12 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, } } } - + /* OK, if we got to here, then none of the previous chips appear to be aliases for the current one. */ set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */ cfi->numchips++; - + /* Put it back into Read Mode */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); @@ -185,11 +185,11 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base, printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n", map->name, cfi->interleave, cfi->device_type*8, base, map->bankwidth*8); - + return 1; } -static int __xipram cfi_chip_setup(struct map_info *map, +static int __xipram cfi_chip_setup(struct map_info *map, struct cfi_private *cfi) { int ofs_factor = cfi->interleave*cfi->device_type; @@ -209,11 +209,11 @@ static int __xipram cfi_chip_setup(struct map_info *map, printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name); return 0; } - - memset(cfi->cfiq,0,sizeof(struct cfi_ident)); - + + memset(cfi->cfiq,0,sizeof(struct cfi_ident)); + cfi->cfi_mode = CFI_MODE_CFI; - + /* Read the CFI info structure */ xip_disable_qry(base, map, cfi); for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++) @@ -231,7 +231,7 @@ static int __xipram cfi_chip_setup(struct map_info *map, cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL); cfi->mfr = cfi_read_query(map, base); - cfi->id = cfi_read_query(map, base + ofs_factor); + cfi->id = cfi_read_query(map, base + ofs_factor); /* Put it back into Read Mode */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); @@ -255,10 +255,10 @@ static int __xipram cfi_chip_setup(struct map_info *map, for (i=0; i<cfi->cfiq->NumEraseRegions; i++) { cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]); - -#ifdef DEBUG_CFI + +#ifdef DEBUG_CFI printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n", - i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff, + i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff, (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1); #endif } @@ -271,33 +271,33 @@ static int __xipram cfi_chip_setup(struct map_info *map, } #ifdef DEBUG_CFI -static char *vendorname(__u16 vendor) +static char *vendorname(__u16 vendor) { switch (vendor) { case P_ID_NONE: return "None"; - + case P_ID_INTEL_EXT: return "Intel/Sharp Extended"; - + case P_ID_AMD_STD: return "AMD/Fujitsu Standard"; - + case P_ID_INTEL_STD: return "Intel/Sharp Standard"; - + case P_ID_AMD_EXT: return "AMD/Fujitsu Extended"; case P_ID_WINBOND: return "Winbond Standard"; - + case P_ID_ST_ADV: return "ST Advanced"; case P_ID_MITSUBISHI_STD: return "Mitsubishi Standard"; - + case P_ID_MITSUBISHI_EXT: return "Mitsubishi Extended"; @@ -306,13 +306,13 @@ static char *vendorname(__u16 vendor) case P_ID_INTEL_PERFORMANCE: return "Intel Performance Code"; - + case P_ID_INTEL_DATA: return "Intel Data"; - + case P_ID_RESERVED: return "Not Allowed / Reserved for Future Use"; - + default: return "Unknown"; } @@ -325,21 +325,21 @@ static void print_cfi_ident(struct cfi_ident *cfip) if (cfip->qry[0] != 'Q' || cfip->qry[1] != 'R' || cfip->qry[2] != 'Y') { printk("Invalid CFI ident structure.\n"); return; - } -#endif + } +#endif printk("Primary Vendor Command Set: %4.4X (%s)\n", cfip->P_ID, vendorname(cfip->P_ID)); if (cfip->P_ADR) printk("Primary Algorithm Table at %4.4X\n", cfip->P_ADR); else printk("No Primary Algorithm Table\n"); - + printk("Alternative Vendor Command Set: %4.4X (%s)\n", cfip->A_ID, vendorname(cfip->A_ID)); if (cfip->A_ADR) printk("Alternate Algorithm Table at %4.4X\n", cfip->A_ADR); else printk("No Alternate Algorithm Table\n"); - - + + printk("Vcc Minimum: %2d.%d V\n", cfip->VccMin >> 4, cfip->VccMin & 0xf); printk("Vcc Maximum: %2d.%d V\n", cfip->VccMax >> 4, cfip->VccMax & 0xf); if (cfip->VppMin) { @@ -348,61 +348,61 @@ static void print_cfi_ident(struct cfi_ident *cfip) } else printk("No Vpp line\n"); - + printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp); printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp)); - + if (cfip->BufWriteTimeoutTyp || cfip->BufWriteTimeoutMax) { printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp); printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp)); } else printk("Full buffer write not supported\n"); - + printk("Typical block erase timeout: %d ms\n", 1<<cfip->BlockEraseTimeoutTyp); printk("Maximum block erase timeout: %d ms\n", (1<<cfip->BlockEraseTimeoutMax) * (1<<cfip->BlockEraseTimeoutTyp)); if (cfip->ChipEraseTimeoutTyp || cfip->ChipEraseTimeoutMax) { - printk("Typical chip erase timeout: %d ms\n", 1<<cfip->ChipEraseTimeoutTyp); + printk("Typical chip erase timeout: %d ms\n", 1<<cfip->ChipEraseTimeoutTyp); printk("Maximum chip erase timeout: %d ms\n", (1<<cfip->ChipEraseTimeoutMax) * (1<<cfip->ChipEraseTimeoutTyp)); } else printk("Chip erase not supported\n"); - + printk("Device size: 0x%X bytes (%d MiB)\n", 1 << cfip->DevSize, 1<< (cfip->DevSize - 20)); printk("Flash Device Interface description: 0x%4.4X\n", cfip->InterfaceDesc); switch(cfip->InterfaceDesc) { case 0: printk(" - x8-only asynchronous interface\n"); break; - + case 1: printk(" - x16-only asynchronous interface\n"); break; - + case 2: printk(" - supports x8 and x16 via BYTE# with asynchronous interface\n"); break; - + case 3: printk(" - x32-only asynchronous interface\n"); break; - + case 4: printk(" - supports x16 and x32 via Word# with asynchronous interface\n"); break; - + case 65535: printk(" - Not Allowed / Reserved\n"); break; - + default: printk(" - Unknown\n"); break; } - + printk("Max. bytes in buffer write: 0x%x\n", 1<< cfip->MaxBufWriteSize); printk("Number of Erase Block Regions: %d\n", cfip->NumEraseRegions); - + } #endif /* DEBUG_CFI */ diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c index 2b2ede2bfcc..d8e7a026ba5 100644 --- a/drivers/mtd/chips/cfi_util.c +++ b/drivers/mtd/chips/cfi_util.c @@ -7,7 +7,7 @@ * * This code is covered by the GPL. * - * $Id: cfi_util.c,v 1.8 2004/12/14 19:55:56 nico Exp $ + * $Id: cfi_util.c,v 1.10 2005/11/07 11:14:23 gleixner Exp $ * */ @@ -56,7 +56,7 @@ __xipram cfi_read_pri(struct map_info *map, __u16 adr, __u16 size, const char* n /* Read in the Extended Query Table */ for (i=0; i<size; i++) { - ((unsigned char *)extp)[i] = + ((unsigned char *)extp)[i] = cfi_read_query(map, base+((adr+i)*ofs_factor)); } @@ -70,15 +70,6 @@ __xipram cfi_read_pri(struct map_info *map, __u16 adr, __u16 size, const char* n local_irq_enable(); #endif - if (extp->MajorVersion != '1' || - (extp->MinorVersion < '0' || extp->MinorVersion > '3')) { - printk(KERN_WARNING " Unknown %s Extended Query " - "version %c.%c.\n", name, extp->MajorVersion, - extp->MinorVersion); - kfree(extp); - extp = NULL; - } - out: return extp; } @@ -122,17 +113,17 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob, i = 0; - /* Skip all erase regions which are ended before the start of + /* Skip all erase regions which are ended before the start of the requested erase. Actually, to save on the calculations, we skip to the first erase region which starts after the start of the requested erase, and then go back one. */ - + while (i < mtd->numeraseregions && ofs >= regions[i].offset) i++; i--; - /* OK, now i is pointing at the erase region in which this + /* OK, now i is pointing at the erase region in which this erase request starts. Check the start of the requested erase range is aligned with the erase size which is in effect here. @@ -155,7 +146,7 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob, the address actually falls */ i--; - + if ((ofs + len) & (regions[i].erasesize-1)) return -EINVAL; @@ -168,7 +159,7 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob, int size = regions[i].erasesize; ret = (*frob)(map, &cfi->chips[chipnum], adr, size, thunk); - + if (ret) return ret; @@ -182,7 +173,7 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob, if (adr >> cfi->chipshift) { adr = 0; chipnum++; - + if (chipnum >= cfi->numchips) break; } diff --git a/drivers/mtd/chips/chipreg.c b/drivers/mtd/chips/chipreg.c index d7d739a108a..c2127840a18 100644 --- a/drivers/mtd/chips/chipreg.c +++ b/drivers/mtd/chips/chipreg.c @@ -41,7 +41,7 @@ static struct mtd_chip_driver *get_mtd_chip_driver (const char *name) list_for_each(pos, &chip_drvs_list) { this = list_entry(pos, typeof(*this), list); - + if (!strcmp(this->name, name)) { ret = this; break; @@ -73,7 +73,7 @@ struct mtd_info *do_map_probe(const char *name, struct map_info *map) ret = drv->probe(map); - /* We decrease the use count here. It may have been a + /* We decrease the use count here. It may have been a probe-only module, which is no longer required from this point, having given us a handle on (and increased the use count of) the actual driver code. @@ -82,7 +82,7 @@ struct mtd_info *do_map_probe(const char *name, struct map_info *map) if (ret) return ret; - + return NULL; } /* diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h index e1a5b76596c..77303ce5dcf 100644 --- a/drivers/mtd/chips/fwh_lock.h +++ b/drivers/mtd/chips/fwh_lock.h @@ -25,7 +25,7 @@ struct fwh_xxlock_thunk { * so this code has not been tested with interleaved chips, * and will likely fail in that context. */ -static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip, +static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; @@ -44,7 +44,7 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip, * - on 64k boundariesand * - bit 1 set high * - block lock registers are 4MiB lower - overflow subtract (danger) - * + * * The address manipulation is first done on the logical address * which is 0 at the start of the chip, and then the offset of * the individual chip is addted to it. Any other order a weird @@ -93,7 +93,7 @@ static int fwh_unlock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len) ret = cfi_varsize_frob(mtd, fwh_xxlock_oneblock, ofs, len, (void *)&FWH_XXLOCK_ONEBLOCK_UNLOCK); - + return ret; } diff --git a/drivers/mtd/chips/gen_probe.c b/drivers/mtd/chips/gen_probe.c index dc065b22f79..41bd59d20d8 100644 --- a/drivers/mtd/chips/gen_probe.c +++ b/drivers/mtd/chips/gen_probe.c @@ -2,7 +2,7 @@ * Routines common to all CFI-type probes. * (C) 2001-2003 Red Hat, Inc. * GPL'd - * $Id: gen_probe.c,v 1.22 2005/01/24 23:49:50 rmk Exp $ + * $Id: gen_probe.c,v 1.24 2005/11/07 11:14:23 gleixner Exp $ */ #include <linux/kernel.h> @@ -26,7 +26,7 @@ struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp) /* First probe the map to see if we have CFI stuff there. */ cfi = genprobe_ident_chips(map, cp); - + if (!cfi) return NULL; @@ -36,12 +36,12 @@ struct mtd_info *mtd_do_chip_probe(struct map_info *map, struct chip_probe *cp) mtd = check_cmd_set(map, 1); /* First the primary cmdset */ if (!mtd) mtd = check_cmd_set(map, 0); /* Then the secondary */ - + if (mtd) return mtd; printk(KERN_WARNING"gen_probe: No supported Vendor Command Set found\n"); - + kfree(cfi->cfiq); kfree(cfi); map->fldrv_priv = NULL; @@ -60,14 +60,14 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi memset(&cfi, 0, sizeof(cfi)); - /* Call the probetype-specific code with all permutations of + /* Call the probetype-specific code with all permutations of 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); return NULL; - } + } #if 0 /* Let the CFI probe routine do this sanity check. The Intel and AMD probe routines won't ever return a broken CFI structure anyway, @@ -92,13 +92,13 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi } else { BUG(); } - + cfi.numchips = 1; - /* - * Allocate memory for bitmap of valid chips. - * Align bitmap storage size to full byte. - */ + /* + * Allocate memory for bitmap of valid chips. + * Align bitmap storage size to full byte. + */ max_chips = map->size >> cfi.chipshift; mapsize = (max_chips / 8) + ((max_chips % 8) ? 1 : 0); chip_map = kmalloc(mapsize, GFP_KERNEL); @@ -122,7 +122,7 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi } /* - * Now allocate the space for the structures we need to return to + * Now allocate the space for the structures we need to return to * our caller, and copy the appropriate data into them. */ @@ -154,7 +154,7 @@ static struct cfi_private *genprobe_ident_chips(struct map_info *map, struct chi return retcfi; } - + static int genprobe_new_chip(struct map_info *map, struct chip_probe *cp, struct cfi_private *cfi) { @@ -189,7 +189,7 @@ extern cfi_cmdset_fn_t cfi_cmdset_0001; extern cfi_cmdset_fn_t cfi_cmdset_0002; extern cfi_cmdset_fn_t cfi_cmdset_0020; -static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map, +static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map, int primary) { struct cfi_private *cfi = map->fldrv_priv; @@ -199,7 +199,7 @@ static inline struct mtd_info *cfi_cmdset_unknown(struct map_info *map, cfi_cmdset_fn_t *probe_function; sprintf(probename, "cfi_cmdset_%4.4X", type); - + probe_function = inter_module_get_request(probename, probename); if (probe_function) { @@ -221,7 +221,7 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary) { struct cfi_private *cfi = map->fldrv_priv; __u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID; - + if (type == P_ID_NONE || type == P_ID_RESERVED) return NULL; @@ -235,6 +235,7 @@ static struct mtd_info *check_cmd_set(struct map_info *map, int primary) #ifdef CONFIG_MTD_CFI_INTELEXT case 0x0001: case 0x0003: + case 0x0200: return cfi_cmdset_0001(map, primary); #endif #ifdef CONFIG_MTD_CFI_AMDSTD diff --git a/drivers/mtd/chips/jedec.c b/drivers/mtd/chips/jedec.c index 4f6778f3ee3..c40b48dabed 100644 --- a/drivers/mtd/chips/jedec.c +++ b/drivers/mtd/chips/jedec.c @@ -1,6 +1,6 @@ /* JEDEC Flash Interface. - * This is an older type of interface for self programming flash. It is + * This is an older type of interface for self programming flash. It is * commonly use in older AMD chips and is obsolete compared with CFI. * It is called JEDEC because the JEDEC association distributes the ID codes * for the chips. @@ -88,9 +88,9 @@ static const struct JEDECTable JEDEC_table[] = { static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id); static void jedec_sync(struct mtd_info *mtd) {}; -static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len, +static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); -static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len, +static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf); static struct mtd_info *jedec_probe(struct map_info *map); @@ -122,7 +122,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) memset(MTD, 0, sizeof(struct mtd_info) + sizeof(struct jedec_private)); priv = (struct jedec_private *)&MTD[1]; - + my_bank_size = map->size; if (map->size/my_bank_size > MAX_JEDEC_CHIPS) @@ -131,13 +131,13 @@ static struct mtd_info *jedec_probe(struct map_info *map) kfree(MTD); return NULL; } - + for (Base = 0; Base < map->size; Base += my_bank_size) { // Perhaps zero could designate all tests? if (map->buswidth == 0) map->buswidth = 1; - + if (map->buswidth == 1){ if (jedec_probe8(map,Base,priv) == 0) { printk("did recognize jedec chip\n"); @@ -150,7 +150,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) if (map->buswidth == 4) jedec_probe32(map,Base,priv); } - + // Get the biggest sector size SectorSize = 0; for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++) @@ -160,7 +160,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) if (priv->chips[I].sectorsize > SectorSize) SectorSize = priv->chips[I].sectorsize; } - + // Quickly ensure that the other sector sizes are factors of the largest for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++) { @@ -169,9 +169,9 @@ static struct mtd_info *jedec_probe(struct map_info *map) printk("mtd: Failed. Device has incompatible mixed sector sizes\n"); kfree(MTD); return NULL; - } + } } - + /* Generate a part name that includes the number of different chips and other configuration information */ count = 1; @@ -181,13 +181,13 @@ static struct mtd_info *jedec_probe(struct map_info *map) for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++) { const struct JEDECTable *JEDEC; - + if (priv->chips[I+1].jedec == priv->chips[I].jedec) { count++; continue; } - + // Locate the chip in the jedec table JEDEC = jedec_idtoinf(priv->chips[I].jedec >> 8,priv->chips[I].jedec); if (JEDEC == 0) @@ -196,11 +196,11 @@ static struct mtd_info *jedec_probe(struct map_info *map) kfree(MTD); return NULL; } - + if (Uniq != 0) strcat(Part,","); Uniq++; - + if (count != 1) sprintf(Part+strlen(Part),"%x*[%s]",count,JEDEC->name); else @@ -208,7 +208,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) if (strlen(Part) > sizeof(Part)*2/3) break; count = 1; - } + } /* Determine if the chips are organized in a linear fashion, or if there are empty banks. Note, the last bank does not count here, only the @@ -233,7 +233,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) { if (priv->bank_fill[I] != my_bank_size) priv->is_banked = 1; - + /* This even could be eliminated, but new de-optimized read/write functions have to be written */ printk("priv->bank_fill[%d] is %lx, priv->bank_fill[0] is %lx\n",I,priv->bank_fill[I],priv->bank_fill[0]); @@ -242,7 +242,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) printk("mtd: Failed. Cannot handle unsymmetric banking\n"); kfree(MTD); return NULL; - } + } } } } @@ -250,7 +250,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) strcat(Part,", banked"); // printk("Part: '%s'\n",Part); - + memset(MTD,0,sizeof(*MTD)); // strlcpy(MTD->name,Part,sizeof(MTD->name)); MTD->name = map->name; @@ -291,7 +291,7 @@ static int checkparity(u_char C) /* Take an array of JEDEC numbers that represent interleved flash chips and process them. Check to make sure they are good JEDEC numbers, look - them up and then add them to the chip list */ + them up and then add them to the chip list */ static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count, unsigned long base,struct jedec_private *priv) { @@ -306,16 +306,16 @@ static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count, if (checkparity(Mfg[I]) == 0 || checkparity(Id[I]) == 0) return 0; } - + // Finally, just make sure all the chip sizes are the same JEDEC = jedec_idtoinf(Mfg[0],Id[0]); - + if (JEDEC == 0) { printk("mtd: Found JEDEC flash chip, but do not have a table entry for %x:%x\n",Mfg[0],Mfg[1]); return 0; } - + Size = JEDEC->size; SectorSize = JEDEC->sectorsize; for (I = 0; I != Count; I++) @@ -331,7 +331,7 @@ static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count, { printk("mtd: Failed. Interleved flash does not have matching characteristics\n"); return 0; - } + } } // Load the Chips @@ -345,13 +345,13 @@ static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count, { printk("mtd: Device has too many chips. Increase MAX_JEDEC_CHIPS\n"); return 0; - } - + } + // Add them to the table for (J = 0; J != Count; J++) { unsigned long Bank; - + JEDEC = jedec_idtoinf(Mfg[J],Id[J]); priv->chips[I].jedec = (Mfg[J] << 8) | Id[J]; priv->chips[I].size = JEDEC->size; @@ -364,17 +364,17 @@ static int handle_jedecs(struct map_info *map,__u8 *Mfg,__u8 *Id,unsigned Count, // log2 n :| priv->chips[I].addrshift = 0; for (Bank = Count; Bank != 1; Bank >>= 1, priv->chips[I].addrshift++); - + // Determine how filled this bank is. Bank = base & (~(my_bank_size-1)); - if (priv->bank_fill[Bank/my_bank_size] < base + + if (priv->bank_fill[Bank/my_bank_size] < base + (JEDEC->size << priv->chips[I].addrshift) - Bank) priv->bank_fill[Bank/my_bank_size] = base + (JEDEC->size << priv->chips[I].addrshift) - Bank; I++; } priv->size += priv->chips[I-1].size*Count; - + return priv->chips[I-1].size; } @@ -392,7 +392,7 @@ static const struct JEDECTable *jedec_idtoinf(__u8 mfr,__u8 id) // Look for flash using an 8 bit bus interface static int jedec_probe8(struct map_info *map,unsigned long base, struct jedec_private *priv) -{ +{ #define flread(x) map_read8(map,base+x) #define flwrite(v,x) map_write8(map,v,base+x) @@ -410,20 +410,20 @@ static int jedec_probe8(struct map_info *map,unsigned long base, OldVal = flread(base); for (I = 0; OldVal != flread(base) && I < 10000; I++) OldVal = flread(base); - + // Reset the chip - flwrite(Reset,0x555); - + flwrite(Reset,0x555); + // Send the sequence flwrite(AutoSel1,0x555); flwrite(AutoSel2,0x2AA); flwrite(AutoSel3,0x555); - + // Get the JEDEC numbers Mfg[0] = flread(0); Id[0] = flread(1); // printk("Mfg is %x, Id is %x\n",Mfg[0],Id[0]); - + Size = handle_jedecs(map,Mfg,Id,1,base,priv); // printk("handle_jedecs Size is %x\n",(unsigned int)Size); if (Size == 0) @@ -431,13 +431,13 @@ static int jedec_probe8(struct map_info *map,unsigned long base, flwrite(Reset,0x555); return 0; } - + // Reset. flwrite(Reset,0x555); - + return 1; - + #undef flread #undef flwrite } @@ -470,17 +470,17 @@ static int jedec_probe32(struct map_info *map,unsigned long base, OldVal = flread(base); for (I = 0; OldVal != flread(base) && I < 10000; I++) OldVal = flread(base); - + // Reset the chip - flwrite(Reset,0x555); - + flwrite(Reset,0x555); + // Send the sequence flwrite(AutoSel1,0x555); flwrite(AutoSel2,0x2AA); flwrite(AutoSel3,0x555); - + // Test #1, JEDEC numbers are readable from 0x??00/0x??01 - if (flread(0) != flread(0x100) || + if (flread(0) != flread(0x100) || flread(1) != flread(0x101)) { flwrite(Reset,0x555); @@ -494,14 +494,14 @@ static int jedec_probe32(struct map_info *map,unsigned long base, OldVal = flread(1); for (I = 0; I != 4; I++) Id[I] = (OldVal >> (I*8)); - + Size = handle_jedecs(map,Mfg,Id,4,base,priv); if (Size == 0) { flwrite(Reset,0x555); return 0; } - + /* Check if there is address wrap around within a single bank, if this returns JEDEC numbers then we assume that it is wrap around. Notice we call this routine with the JEDEC return still enabled, if two or @@ -519,27 +519,27 @@ static int jedec_probe32(struct map_info *map,unsigned long base, // Reset. flwrite(0xF0F0F0F0,0x555); - + return 1; - + #undef flread #undef flwrite } /* Linear read. */ -static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len, +static int jedec_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct map_info *map = mtd->priv; - + map_copy_from(map, buf, from, len); *retlen = len; - return 0; + return 0; } /* Banked read. Take special care to jump past the holes in the bank mapping. This version assumes symetry in the holes.. */ -static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len, +static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct map_info *map = mtd->priv; @@ -555,17 +555,17 @@ static int jedec_read_banked(struct mtd_info *mtd, loff_t from, size_t len, if (priv->bank_fill[0] - offset < len) get = priv->bank_fill[0] - offset; - bank /= priv->bank_fill[0]; + bank /= priv->bank_fill[0]; map_copy_from(map,buf + *retlen,bank*my_bank_size + offset,get); - + len -= get; *retlen += get; from += get; - } - return 0; + } + return 0; } -/* Pass the flags value that the flash return before it re-entered read +/* Pass the flags value that the flash return before it re-entered read mode. */ static void jedec_flash_failed(unsigned char code) { @@ -579,17 +579,17 @@ static void jedec_flash_failed(unsigned char code) printk("mtd: Programming didn't take\n"); } -/* This uses the erasure function described in the AMD Flash Handbook, +/* This uses the erasure function described in the AMD Flash Handbook, it will work for flashes with a fixed sector size only. Flashes with a selection of sector sizes (ie the AMD Am29F800B) will need a different - routine. This routine tries to parallize erasing multiple chips/sectors + routine. This routine tries to parallize erasing multiple chips/sectors where possible */ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) { // Does IO to the currently selected chip #define flread(x) map_read8(map,chip->base+((x)<<chip->addrshift)) #define flwrite(v,x) map_write8(map,v,chip->base+((x)<<chip->addrshift)) - + unsigned long Time = 0; unsigned long NoTime = 0; unsigned long start = instr->addr, len = instr->len; @@ -603,7 +603,7 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) (len % mtd->erasesize) != 0 || (len/mtd->erasesize) == 0) return -EINVAL; - + jedec_flash_chip_scan(priv,start,len); // Start the erase sequence on each chip @@ -611,16 +611,16 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) { unsigned long off; struct jedec_flash_chip *chip = priv->chips + I; - + if (chip->length == 0) continue; - + if (chip->start + chip->length > chip->size) { printk("DIE\n"); return -EIO; - } - + } + flwrite(0xF0,chip->start + 0x555); flwrite(0xAA,chip->start + 0x555); flwrite(0x55,chip->start + 0x2AA); @@ -628,8 +628,8 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) flwrite(0xAA,chip->start + 0x555); flwrite(0x55,chip->start + 0x2AA); - /* Once we start selecting the erase sectors the delay between each - command must not exceed 50us or it will immediately start erasing + /* Once we start selecting the erase sectors the delay between each + command must not exceed 50us or it will immediately start erasing and ignore the other sectors */ for (off = 0; off < len; off += chip->sectorsize) { @@ -641,19 +641,19 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) { printk("mtd: Ack! We timed out the erase timer!\n"); return -EIO; - } + } } - } + } /* We could split this into a timer routine and return early, performing background erasure.. Maybe later if the need warrents */ /* Poll the flash for erasure completion, specs say this can take as long - as 480 seconds to do all the sectors (for a 2 meg flash). + as 480 seconds to do all the sectors (for a 2 meg flash). Erasure time is dependent on chip age, temp and wear.. */ - + /* This being a generic routine assumes a 32 bit bus. It does read32s - and bundles interleved chips into the same grouping. This will work + and bundles interleved chips into the same grouping. This will work for all bus widths */ Time = 0; NoTime = 0; @@ -664,20 +664,20 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) unsigned todo[4] = {0,0,0,0}; unsigned todo_left = 0; unsigned J; - + if (chip->length == 0) continue; - /* Find all chips in this data line, realistically this is all + /* Find all chips in this data line, realistically this is all or nothing up to the interleve count */ for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++) { - if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) == + if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) == (chip->base & (~((1<<chip->addrshift)-1)))) { todo_left++; todo[priv->chips[J].base & ((1<<chip->addrshift)-1)] = 1; - } + } } /* printk("todo: %x %x %x %x\n",(short)todo[0],(short)todo[1], @@ -687,7 +687,7 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) { __u32 Last[4]; unsigned long Count = 0; - + /* During erase bit 7 is held low and bit 6 toggles, we watch this, should it stop toggling or go high then the erase is completed, or this is not really flash ;> */ @@ -718,23 +718,23 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) __u8 Byte3 = (Last[(Count-3)%4] >> (J*8)) & 0xFF; if (todo[J] == 0) continue; - + if ((Byte1 & (1 << 7)) == 0 && Byte1 != Byte2) { // printk("Check %x %x %x\n",(short)J,(short)Byte1,(short)Byte2); continue; } - + if (Byte1 == Byte2) { jedec_flash_failed(Byte3); return -EIO; } - + todo[J] = 0; todo_left--; } - + /* if (NoTime == 0) Time += HZ/10 - schedule_timeout(HZ/10);*/ NoTime = 0; @@ -751,7 +751,7 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) break; } Count++; - + /* // Count time, max of 15s per sector (according to AMD) if (Time > 15*len/mtd->erasesize*HZ) { @@ -759,38 +759,38 @@ static int flash_erase(struct mtd_info *mtd, struct erase_info *instr) return -EIO; } */ } - + // Skip to the next chip if we used chip erase if (chip->length == chip->size) off = chip->size; else off += chip->sectorsize; - + if (off >= chip->length) break; NoTime = 1; } - + for (J = 0; priv->chips[J].jedec != 0 && J < MAX_JEDEC_CHIPS; J++) { if ((priv->chips[J].base & (~((1<<chip->addrshift)-1))) == (chip->base & (~((1<<chip->addrshift)-1)))) priv->chips[J].length = 0; - } + } } - + //printk("done\n"); instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); return 0; - + #undef flread #undef flwrite } /* This is the simple flash writing function. It writes to every byte, in sequence. It takes care of how to properly address the flash if - the flash is interleved. It can only be used if all the chips in the + the flash is interleved. It can only be used if all the chips in the array are identical!*/ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, size_t *retlen, const u_char *buf) @@ -800,25 +800,25 @@ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, of addrshift (interleave index) and then adds the control register index. */ #define flread(x) map_read8(map,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift)) #define flwrite(v,x) map_write8(map,v,base+(off&((1<<chip->addrshift)-1))+((x)<<chip->addrshift)) - + struct map_info *map = mtd->priv; struct jedec_private *priv = map->fldrv_priv; unsigned long base; unsigned long off; size_t save_len = len; - + if (start + len > mtd->size) return -EIO; - + //printk("Here"); - + //printk("flash_write: start is %x, len is %x\n",start,(unsigned long)len); while (len != 0) { struct jedec_flash_chip *chip = priv->chips; unsigned long bank; unsigned long boffset; - + // Compute the base of the flash. off = ((unsigned long)start) % (chip->size << chip->addrshift); base = start - off; @@ -828,10 +828,10 @@ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, boffset = base & (priv->bank_fill[0]-1); bank = (bank/priv->bank_fill[0])*my_bank_size; base = bank + boffset; - + // printk("Flasing %X %X %X\n",base,chip->size,len); // printk("off is %x, compare with %x\n",off,chip->size << chip->addrshift); - + // Loop over this page for (; off != (chip->size << chip->addrshift) && len != 0; start++, len--, off++,buf++) { @@ -845,7 +845,7 @@ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, } if (((~oldbyte) & *buf) != 0) printk("mtd: warn: Trying to set a 0 to a 1\n"); - + // Write flwrite(0xAA,0x555); flwrite(0x55,0x2AA); @@ -854,10 +854,10 @@ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, Last[0] = map_read8(map,base + off); Last[1] = map_read8(map,base + off); Last[2] = map_read8(map,base + off); - + /* Wait for the flash to finish the operation. We store the last 4 status bytes that have been retrieved so we can determine why - it failed. The toggle bits keep toggling when there is a + it failed. The toggle bits keep toggling when there is a failure */ for (Count = 3; Last[(Count - 1) % 4] != Last[(Count - 2) % 4] && Count < 10000; Count++) @@ -866,7 +866,7 @@ static int flash_write(struct mtd_info *mtd, loff_t start, size_t len, { jedec_flash_failed(Last[(Count - 3) % 4]); return -EIO; - } + } } } *retlen = save_len; @@ -885,24 +885,24 @@ static void jedec_flash_chip_scan(struct jedec_private *priv,unsigned long start // Zero the records for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++) priv->chips[I].start = priv->chips[I].length = 0; - + // Intersect the region with each chip for (I = 0; priv->chips[I].jedec != 0 && I < MAX_JEDEC_CHIPS; I++) { struct jedec_flash_chip *chip = priv->chips + I; unsigned long ByteStart; unsigned long ChipEndByte = chip->offset + (chip->size << chip->addrshift); - + // End is before this chip or the start is after it if (start+len < chip->offset || ChipEndByte - (1 << chip->addrshift) < start) continue; - + if (start < chip->offset) { ByteStart = chip->offset; chip->start = 0; - } + } else { chip->start = (start - chip->offset + (1 << chip->addrshift)-1) >> chip->addrshift; diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index 30da428eb7b..edb306c03c0 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -1,7 +1,7 @@ -/* +/* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. - $Id: jedec_probe.c,v 1.63 2005/02/14 16:30:32 bjd Exp $ + $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. @@ -1719,7 +1719,7 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, static struct mtd_info *jedec_probe(struct map_info *map); -static inline u32 jedec_read_mfr(struct map_info *map, __u32 base, +static inline u32 jedec_read_mfr(struct map_info *map, __u32 base, struct cfi_private *cfi) { map_word result; @@ -1730,7 +1730,7 @@ static inline u32 jedec_read_mfr(struct map_info *map, __u32 base, return result.x[0] & mask; } -static inline u32 jedec_read_id(struct map_info *map, __u32 base, +static inline u32 jedec_read_id(struct map_info *map, __u32 base, struct cfi_private *cfi) { map_word result; @@ -1741,7 +1741,7 @@ static inline u32 jedec_read_id(struct map_info *map, __u32 base, return result.x[0] & mask; } -static inline void jedec_reset(u32 base, struct map_info *map, +static inline void jedec_reset(u32 base, struct map_info *map, struct cfi_private *cfi) { /* Reset */ @@ -1765,7 +1765,7 @@ static inline void jedec_reset(u32 base, struct map_info *map, * so ensure we're in read mode. Send both the Intel and the AMD command * for this. Intel uses 0xff for this, AMD uses 0xff for NOP, so * this should be safe. - */ + */ cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); /* FIXME - should have reset delay before continuing */ } @@ -1807,14 +1807,14 @@ static int cfi_jedec_setup(struct cfi_private *p_cfi, int index) printk("Found: %s\n",jedec_table[index].name); num_erase_regions = jedec_table[index].NumEraseRegions; - + p_cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL); if (!p_cfi->cfiq) { //xx printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name); return 0; } - memset(p_cfi->cfiq,0,sizeof(struct cfi_ident)); + memset(p_cfi->cfiq,0,sizeof(struct cfi_ident)); p_cfi->cfiq->P_ID = jedec_table[index].CmdSet; p_cfi->cfiq->NumEraseRegions = jedec_table[index].NumEraseRegions; @@ -1969,7 +1969,7 @@ static inline int jedec_match( __u32 base, cfi_send_gen_cmd(0x90, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL); /* FIXME - should have a delay before continuing */ - match_done: + match_done: return rc; } @@ -1998,23 +1998,23 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, "Probe at base(0x%08x) past the end of the map(0x%08lx)\n", base, map->size -1); return 0; - + } /* Ensure the unlock addresses we try stay inside the map */ probe_offset1 = cfi_build_cmd_addr( - cfi->addr_unlock1, - cfi_interleave(cfi), + cfi->addr_unlock1, + cfi_interleave(cfi), cfi->device_type); probe_offset2 = cfi_build_cmd_addr( - cfi->addr_unlock1, - cfi_interleave(cfi), + cfi->addr_unlock1, + cfi_interleave(cfi), cfi->device_type); if ( ((base + probe_offset1 + map_bankwidth(map)) >= map->size) || ((base + probe_offset2 + map_bankwidth(map)) >= map->size)) { goto retry; } - + /* Reset */ jedec_reset(base, map, cfi); @@ -2027,13 +2027,13 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, /* FIXME - should have a delay before continuing */ if (!cfi->numchips) { - /* This is the first time we're called. Set up the CFI + /* This is the first time we're called. Set up the CFI stuff accordingly and return */ - + cfi->mfr = jedec_read_mfr(map, base, cfi); cfi->id = jedec_read_id(map, base, cfi); DEBUG(MTD_DEBUG_LEVEL3, - "Search for id:(%02x %02x) interleave(%d) type(%d)\n", + "Search for id:(%02x %02x) interleave(%d) type(%d)\n", cfi->mfr, cfi->id, cfi_interleave(cfi), cfi->device_type); for (i=0; i<sizeof(jedec_table)/sizeof(jedec_table[0]); i++) { if ( jedec_match( base, map, cfi, &jedec_table[i] ) ) { @@ -2062,7 +2062,7 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, return 0; } } - + /* Check each previous chip locations to see if it's an alias */ for (i=0; i < (base >> cfi->chipshift); i++) { unsigned long start; @@ -2083,7 +2083,7 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, map->name, base, start); return 0; } - + /* Yes, it's actually got the device IDs as data. Most * unfortunate. Stick the new chip in read mode * too and if it's the same, assume it's an alias. */ @@ -2097,20 +2097,20 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, } } } - + /* OK, if we got to here, then none of the previous chips appear to be aliases for the current one. */ set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */ cfi->numchips++; - + ok_out: /* Put it back into Read Mode */ jedec_reset(base, map, cfi); printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n", - map->name, cfi_interleave(cfi), cfi->device_type*8, base, + map->name, cfi_interleave(cfi), cfi->device_type*8, base, map->bankwidth*8); - + return 1; } diff --git a/drivers/mtd/chips/map_absent.c b/drivers/mtd/chips/map_absent.c index c6c83833cc3..a611de9b151 100644 --- a/drivers/mtd/chips/map_absent.c +++ b/drivers/mtd/chips/map_absent.c @@ -1,11 +1,11 @@ /* * Common code to handle absent "placeholder" devices * Copyright 2001 Resilience Corporation <ebrower@resilience.com> - * $Id: map_absent.c,v 1.5 2004/11/16 18:29:00 dwmw2 Exp $ + * $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. - * Use of this driver as a fallback preserves the expected + * devices on systems that have socketed/removable media. + * Use of this driver as a fallback preserves the expected * registration of MTD device nodes regardless of probe outcome. * A usage example is as follows: * @@ -80,7 +80,7 @@ static int map_absent_read(struct mtd_info *mtd, loff_t from, size_t len, size_t static int map_absent_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) { *retlen = 0; - return -ENODEV; + return -ENODEV; } static int map_absent_erase(struct mtd_info *mtd, struct erase_info *instr) diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c index c3cf0f63bc9..2d26bdef82d 100644 --- a/drivers/mtd/chips/sharp.c +++ b/drivers/mtd/chips/sharp.c @@ -4,7 +4,7 @@ * Copyright 2000,2001 David A. Schleef <ds@schleef.org> * 2000,2001 Lineo, Inc. * - * $Id: sharp.c,v 1.14 2004/08/09 13:19:43 dwmw2 Exp $ + * $Id: sharp.c,v 1.16 2005/11/07 11:14:23 gleixner Exp $ * * Devices supported: * LH28F016SCT Symmetrical block flash memory, 2Mx8 @@ -31,6 +31,7 @@ #include <linux/mtd/cfi.h> #include <linux/delay.h> #include <linux/init.h> +#include <linux/slab.h> #define CMD_RESET 0xffffffff #define CMD_READ_ID 0x90909090 @@ -214,7 +215,7 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd) /* This function returns with the chip->mutex lock held. */ static int sharp_wait(struct map_info *map, struct flchip *chip) { - __u16 status; + int status, i; unsigned long timeo = jiffies + HZ; DECLARE_WAITQUEUE(wait, current); int adr = 0; @@ -227,13 +228,11 @@ retry: map_write32(map,CMD_READ_STATUS,adr); chip->state = FL_STATUS; case FL_STATUS: - status = map_read32(map,adr); -//printk("status=%08x\n",status); - - udelay(100); - if((status & SR_READY)!=SR_READY){ -//printk(".status=%08x\n",status); - udelay(100); + for(i=0;i<100;i++){ + status = map_read32(map,adr); + if((status & SR_READY)==SR_READY) + break; + udelay(1); } break; default: @@ -460,12 +459,12 @@ static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip, remove_wait_queue(&chip->wq, &wait); //spin_lock_bh(chip->mutex); - + if (signal_pending(current)){ ret = -EINTR; goto out; } - + } ret = -ETIME; out: @@ -564,7 +563,7 @@ static int sharp_suspend(struct mtd_info *mtd) static void sharp_resume(struct mtd_info *mtd) { printk("sharp_resume()\n"); - + } static void sharp_destroy(struct mtd_info *mtd) |