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drivers/mtd/chips/cfi_cmdset_0001.c
72.4 KB
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/* * Common Flash Interface support: * Intel Extended Vendor Command Set (ID 0x0001) * * (C) 2000 Red Hat. GPL'd * |
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* |
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* 10/10/2000 Nicolas Pitre <nico@fluxnic.net> |
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* - completely revamped method functions so they are aware and * independent of the flash geometry (buswidth, interleave, etc.) * - scalability vs code size is completely set at compile-time * (see include/linux/mtd/cfi.h for selection) * - optimized write buffer method * 02/05/2002 Christopher Hoover <ch@hpl.hp.com>/<ch@murgatroid.com> * - reworked lock/unlock/erase support for var size flash |
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* 21/03/2007 Rodolfo Giometti <giometti@linux.it> * - auto unlock sectors on resume for auto locking flash on power up |
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*/ #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/init.h> #include <asm/io.h> #include <asm/byteorder.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/interrupt.h> |
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#include <linux/reboot.h> |
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#include <linux/bitmap.h> |
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#include <linux/mtd/xip.h> #include <linux/mtd/map.h> #include <linux/mtd/mtd.h> |
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#include <linux/mtd/cfi.h> /* #define CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE */ /* #define CMDSET0001_DISABLE_WRITE_SUSPEND */ // debugging, turns off buffer write mode if set to 1 #define FORCE_WORD_WRITE 0 |
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/* Intel chips */ |
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#define I82802AB 0x00ad #define I82802AC 0x00ac |
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#define PF38F4476 0x881c |
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/* STMicroelectronics chips */ |
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#define M50LPW080 0x002F |
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#define M50FLW080A 0x0080 #define M50FLW080B 0x0081 |
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/* Atmel chips */ |
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#define AT49BV640D 0x02de |
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#define AT49BV640DT 0x02db |
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static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); |
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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 *); |
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static int cfi_intelext_writev(struct mtd_info *, const struct kvec *, unsigned long, loff_t, size_t *); |
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static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *); static void cfi_intelext_sync (struct mtd_info *); |
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static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); |
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static int cfi_intelext_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len); |
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#ifdef CONFIG_MTD_OTP |
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static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_write_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_lock_user_prot_reg (struct mtd_info *, loff_t, size_t); static int cfi_intelext_get_fact_prot_info (struct mtd_info *, struct otp_info *, size_t); static int cfi_intelext_get_user_prot_info (struct mtd_info *, struct otp_info *, size_t); |
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#endif |
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static int cfi_intelext_suspend (struct mtd_info *); static void cfi_intelext_resume (struct mtd_info *); |
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static int cfi_intelext_reboot (struct notifier_block *, unsigned long, void *); |
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static void cfi_intelext_destroy(struct mtd_info *); struct mtd_info *cfi_cmdset_0001(struct map_info *, int); static struct mtd_info *cfi_intelext_setup (struct mtd_info *); static int cfi_intelext_partition_fixup(struct mtd_info *, struct cfi_private **); static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, |
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size_t *retlen, void **virt, resource_size_t *phys); static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len); |
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static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode); |
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static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode); static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr); #include "fwh_lock.h" /* * *********** SETUP AND PROBE BITS *********** */ static struct mtd_chip_driver cfi_intelext_chipdrv = { .probe = NULL, /* Not usable directly */ .destroy = cfi_intelext_destroy, .name = "cfi_cmdset_0001", .module = THIS_MODULE }; /* #define DEBUG_LOCK_BITS */ /* #define DEBUG_CFI_FEATURES */ #ifdef DEBUG_CFI_FEATURES static void cfi_tell_features(struct cfi_pri_intelext *extp) { int i; |
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printk(" Extended Query version %c.%c ", extp->MajorVersion, extp->MinorVersion); |
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printk(" Feature/Command Support: %4.4X ", extp->FeatureSupport); printk(" - Chip Erase: %s ", extp->FeatureSupport&1?"supported":"unsupported"); printk(" - Suspend Erase: %s ", extp->FeatureSupport&2?"supported":"unsupported"); printk(" - Suspend Program: %s ", extp->FeatureSupport&4?"supported":"unsupported"); printk(" - Legacy Lock/Unlock: %s ", extp->FeatureSupport&8?"supported":"unsupported"); printk(" - Queued Erase: %s ", extp->FeatureSupport&16?"supported":"unsupported"); printk(" - Instant block lock: %s ", extp->FeatureSupport&32?"supported":"unsupported"); printk(" - Protection Bits: %s ", extp->FeatureSupport&64?"supported":"unsupported"); printk(" - Page-mode read: %s ", extp->FeatureSupport&128?"supported":"unsupported"); printk(" - Synchronous read: %s ", extp->FeatureSupport&256?"supported":"unsupported"); printk(" - Simultaneous operations: %s ", extp->FeatureSupport&512?"supported":"unsupported"); |
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printk(" - Extended Flash Array: %s ", extp->FeatureSupport&1024?"supported":"unsupported"); for (i=11; i<32; i++) { |
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if (extp->FeatureSupport & (1<<i)) |
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printk(" - Unknown Bit %X: supported ", i); } |
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printk(" Supported functions after Suspend: %2.2X ", extp->SuspendCmdSupport); printk(" - Program after Erase Suspend: %s ", extp->SuspendCmdSupport&1?"supported":"unsupported"); for (i=1; i<8; i++) { if (extp->SuspendCmdSupport & (1<<i)) printk(" - Unknown Bit %X: supported ", i); } |
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printk(" Block Status Register Mask: %4.4X ", extp->BlkStatusRegMask); printk(" - Lock Bit Active: %s ", extp->BlkStatusRegMask&1?"yes":"no"); |
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printk(" - Lock-Down Bit Active: %s ", extp->BlkStatusRegMask&2?"yes":"no"); for (i=2; i<3; i++) { |
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if (extp->BlkStatusRegMask & (1<<i)) printk(" - Unknown Bit %X Active: yes ",i); } |
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printk(" - EFA Lock Bit: %s ", extp->BlkStatusRegMask&16?"yes":"no"); printk(" - EFA Lock-Down Bit: %s ", extp->BlkStatusRegMask&32?"yes":"no"); for (i=6; i<16; i++) { if (extp->BlkStatusRegMask & (1<<i)) printk(" - Unknown Bit %X Active: yes ",i); } |
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printk(" Vcc Logic Supply Optimum Program/Erase Voltage: %d.%d V ", |
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extp->VccOptimal >> 4, extp->VccOptimal & 0xf); if (extp->VppOptimal) |
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printk(" Vpp Programming Supply Optimum Program/Erase Voltage: %d.%d V ", |
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extp->VppOptimal >> 4, extp->VppOptimal & 0xf); } #endif |
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/* Atmel chips don't use the same PRI format as Intel chips */ |
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static void fixup_convert_atmel_pri(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *extp = cfi->cmdset_priv; struct cfi_pri_atmel atmel_pri; uint32_t features = 0; /* Reverse byteswapping */ extp->FeatureSupport = cpu_to_le32(extp->FeatureSupport); extp->BlkStatusRegMask = cpu_to_le16(extp->BlkStatusRegMask); extp->ProtRegAddr = cpu_to_le16(extp->ProtRegAddr); memcpy(&atmel_pri, extp, sizeof(atmel_pri)); memset((char *)extp + 5, 0, sizeof(*extp) - 5); printk(KERN_ERR "atmel Features: %02x ", atmel_pri.Features); if (atmel_pri.Features & 0x01) /* chip erase supported */ features |= (1<<0); if (atmel_pri.Features & 0x02) /* erase suspend supported */ features |= (1<<1); if (atmel_pri.Features & 0x04) /* program suspend supported */ features |= (1<<2); if (atmel_pri.Features & 0x08) /* simultaneous operations supported */ features |= (1<<9); if (atmel_pri.Features & 0x20) /* page mode read supported */ features |= (1<<7); if (atmel_pri.Features & 0x40) /* queued erase supported */ features |= (1<<4); if (atmel_pri.Features & 0x80) /* Protection bits supported */ features |= (1<<6); extp->FeatureSupport = features; /* burst write mode not supported */ cfi->cfiq->BufWriteTimeoutTyp = 0; cfi->cfiq->BufWriteTimeoutMax = 0; } |
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static void fixup_at49bv640dx_lock(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *cfip = cfi->cmdset_priv; cfip->FeatureSupport |= (1 << 5); mtd->flags |= MTD_POWERUP_LOCK; } |
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#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE |
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/* Some Intel Strata Flash prior to FPO revision C has bugs in this area */ |
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static void fixup_intel_strataflash(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
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struct cfi_pri_intelext *extp = cfi->cmdset_priv; |
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printk(KERN_WARNING "cfi_cmdset_0001: Suspend " "erase on write disabled. "); extp->SuspendCmdSupport &= ~1; } #endif #ifdef CMDSET0001_DISABLE_WRITE_SUSPEND |
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static void fixup_no_write_suspend(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *cfip = cfi->cmdset_priv; if (cfip && (cfip->FeatureSupport&4)) { cfip->FeatureSupport &= ~4; printk(KERN_WARNING "cfi_cmdset_0001: write suspend disabled "); } } #endif |
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static void fixup_st_m28w320ct(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
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cfi->cfiq->BufWriteTimeoutTyp = 0; /* Not supported */ cfi->cfiq->BufWriteTimeoutMax = 0; /* Not supported */ } |
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static void fixup_st_m28w320cb(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
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/* Note this is done after the region info is endian swapped */ cfi->cfiq->EraseRegionInfo[1] = (cfi->cfiq->EraseRegionInfo[1] & 0xffff0000) | 0x3e; }; |
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static void fixup_use_point(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; if (!mtd->point && map_is_linear(map)) { mtd->point = cfi_intelext_point; mtd->unpoint = cfi_intelext_unpoint; } } |
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static void fixup_use_write_buffers(struct mtd_info *mtd) |
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{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; if (cfi->cfiq->BufWriteTimeoutTyp) { printk(KERN_INFO "Using buffer write method " ); mtd->write = cfi_intelext_write_buffers; |
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mtd->writev = cfi_intelext_writev; |
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} } |
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/* * Some chips power-up with all sectors locked by default. */ |
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static void fixup_unlock_powerup_lock(struct mtd_info *mtd) |
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{ |
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struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *cfip = cfi->cmdset_priv; if (cfip->FeatureSupport&32) { printk(KERN_INFO "Using auto-unlock on power-up/resume " ); mtd->flags |= MTD_POWERUP_LOCK; } |
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} |
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static struct cfi_fixup cfi_fixup_table[] = { |
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{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri }, { CFI_MFR_ATMEL, AT49BV640D, fixup_at49bv640dx_lock }, { CFI_MFR_ATMEL, AT49BV640DT, fixup_at49bv640dx_lock }, |
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#ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE |
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{ CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash }, |
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#endif #ifdef CMDSET0001_DISABLE_WRITE_SUSPEND |
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{ CFI_MFR_ANY, CFI_ID_ANY, fixup_no_write_suspend }, |
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#endif #if !FORCE_WORD_WRITE |
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{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers }, |
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#endif |
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{ CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct }, { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb }, { CFI_MFR_INTEL, CFI_ID_ANY, fixup_unlock_powerup_lock }, { 0, 0, NULL } |
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}; static struct cfi_fixup jedec_fixup_table[] = { |
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{ CFI_MFR_INTEL, I82802AB, fixup_use_fwh_lock }, { CFI_MFR_INTEL, I82802AC, fixup_use_fwh_lock }, { CFI_MFR_ST, M50LPW080, fixup_use_fwh_lock }, { CFI_MFR_ST, M50FLW080A, fixup_use_fwh_lock }, { CFI_MFR_ST, M50FLW080B, fixup_use_fwh_lock }, { 0, 0, NULL } |
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}; static struct cfi_fixup fixup_table[] = { /* The CFI vendor ids and the JEDEC vendor IDs appear * to be common. It is like the devices id's are as * well. This table is to pick all cases where * we know that is the case. */ |
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{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_point }, { 0, 0, NULL } |
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}; |
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static void cfi_fixup_major_minor(struct cfi_private *cfi, struct cfi_pri_intelext *extp) { |
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if (cfi->mfr == CFI_MFR_INTEL && |
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cfi->id == PF38F4476 && extp->MinorVersion == '3') extp->MinorVersion = '1'; } |
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static inline struct cfi_pri_intelext * read_pri_intelext(struct map_info *map, __u16 adr) { |
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struct cfi_private *cfi = map->fldrv_priv; |
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struct cfi_pri_intelext *extp; |
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unsigned int extra_size = 0; |
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unsigned int extp_size = sizeof(*extp); again: extp = (struct cfi_pri_intelext *)cfi_read_pri(map, adr, extp_size, "Intel/Sharp"); if (!extp) return NULL; |
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cfi_fixup_major_minor(cfi, extp); |
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if (extp->MajorVersion != '1' || |
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(extp->MinorVersion < '0' || extp->MinorVersion > '5')) { |
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printk(KERN_ERR " Unknown Intel/Sharp Extended Query " "version %c.%c. ", extp->MajorVersion, extp->MinorVersion); kfree(extp); return NULL; } |
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/* 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); |
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if (extp->MinorVersion >= '0') { extra_size = 0; |
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/* Protection Register info */ |
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extra_size += (extp->NumProtectionFields - 1) * sizeof(struct cfi_intelext_otpinfo); |
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} |
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if (extp->MinorVersion >= '1') { |
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/* Burst Read info */ |
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extra_size += 2; if (extp_size < sizeof(*extp) + extra_size) goto need_more; |
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extra_size += extp->extra[extra_size - 1]; } if (extp->MinorVersion >= '3') { int nb_parts, i; |
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/* Number of hardware-partitions */ extra_size += 1; if (extp_size < sizeof(*extp) + extra_size) goto need_more; nb_parts = extp->extra[extra_size - 1]; |
638d98384 {MTD] add support... |
410 411 412 |
/* skip the sizeof(partregion) field in CFI 1.4 */ if (extp->MinorVersion >= '4') extra_size += 2; |
1da177e4c Linux-2.6.12-rc2 |
413 414 415 416 417 418 419 420 421 422 |
for (i = 0; i < nb_parts; i++) { struct cfi_intelext_regioninfo *rinfo; rinfo = (struct cfi_intelext_regioninfo *)&extp->extra[extra_size]; extra_size += sizeof(*rinfo); if (extp_size < sizeof(*extp) + extra_size) goto need_more; rinfo->NumIdentPartitions=le16_to_cpu(rinfo->NumIdentPartitions); extra_size += (rinfo->NumBlockTypes - 1) * sizeof(struct cfi_intelext_blockinfo); } |
638d98384 {MTD] add support... |
423 424 |
if (extp->MinorVersion >= '4') extra_size += sizeof(struct cfi_intelext_programming_regioninfo); |
1da177e4c Linux-2.6.12-rc2 |
425 426 427 428 429 430 431 432 |
if (extp_size < sizeof(*extp) + extra_size) { need_more: extp_size = sizeof(*extp) + extra_size; kfree(extp); if (extp_size > 4096) { printk(KERN_ERR "%s: cfi_pri_intelext is too fat ", |
cb53b3b99 [MTD] replace rem... |
433 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
434 435 436 437 438 |
return NULL; } goto again; } } |
1f948b43f [MTD] chips: Clea... |
439 |
|
1da177e4c Linux-2.6.12-rc2 |
440 441 |
return extp; } |
1da177e4c Linux-2.6.12-rc2 |
442 443 444 445 446 |
struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) { struct cfi_private *cfi = map->fldrv_priv; struct mtd_info *mtd; int i; |
95b93a0cd [MTD] replace kma... |
447 |
mtd = kzalloc(sizeof(*mtd), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
448 449 450 451 452 |
if (!mtd) { printk(KERN_ERR "Failed to allocate memory for MTD device "); return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
453 454 455 456 457 458 459 460 461 462 |
mtd->priv = map; mtd->type = MTD_NORFLASH; /* Fill in the default mtd operations */ mtd->erase = cfi_intelext_erase_varsize; mtd->read = cfi_intelext_read; mtd->write = cfi_intelext_write_words; mtd->sync = cfi_intelext_sync; mtd->lock = cfi_intelext_lock; mtd->unlock = cfi_intelext_unlock; |
9938424f0 mtd: add an ioctl... |
463 |
mtd->is_locked = cfi_intelext_is_locked; |
1da177e4c Linux-2.6.12-rc2 |
464 465 466 467 |
mtd->suspend = cfi_intelext_suspend; mtd->resume = cfi_intelext_resume; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; |
17ffc7ba6 [MTD] Initialize ... |
468 |
mtd->writesize = 1; |
13ce77f46 mtd: cfi: fix wri... |
469 |
mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; |
963a6fb0a [MTD] Add reboot ... |
470 471 |
mtd->reboot_notifier.notifier_call = cfi_intelext_reboot; |
1da177e4c Linux-2.6.12-rc2 |
472 |
if (cfi->cfi_mode == CFI_MODE_CFI) { |
1f948b43f [MTD] chips: Clea... |
473 |
/* |
1da177e4c Linux-2.6.12-rc2 |
474 475 476 477 478 479 480 481 482 483 484 485 486 487 |
* 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. */ __u16 adr = primary?cfi->cfiq->P_ADR:cfi->cfiq->A_ADR; struct cfi_pri_intelext *extp; extp = read_pri_intelext(map, adr); if (!extp) { kfree(mtd); return NULL; } /* Install our own private info structure */ |
1f948b43f [MTD] chips: Clea... |
488 |
cfi->cmdset_priv = extp; |
1da177e4c Linux-2.6.12-rc2 |
489 490 491 492 493 494 |
cfi_fixup(mtd, cfi_fixup_table); #ifdef DEBUG_CFI_FEATURES /* Tell the user about it in lots of lovely detail */ cfi_tell_features(extp); |
1f948b43f [MTD] chips: Clea... |
495 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
496 497 498 499 500 501 502 503 504 505 506 507 508 509 |
if(extp->SuspendCmdSupport & 1) { printk(KERN_NOTICE "cfi_cmdset_0001: Erase suspend on write enabled "); } } else if (cfi->cfi_mode == CFI_MODE_JEDEC) { /* Apply jedec specific fixups */ cfi_fixup(mtd, jedec_fixup_table); } /* Apply generic fixups */ cfi_fixup(mtd, fixup_table); for (i=0; i< cfi->numchips; i++) { |
2a5bd5967 [MTD] Fix default... |
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 |
if (cfi->cfiq->WordWriteTimeoutTyp) cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp; else cfi->chips[i].word_write_time = 50000; if (cfi->cfiq->BufWriteTimeoutTyp) cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp; /* No default; if it isn't specified, we won't use it */ if (cfi->cfiq->BlockEraseTimeoutTyp) cfi->chips[i].erase_time = 1000<<cfi->cfiq->BlockEraseTimeoutTyp; else cfi->chips[i].erase_time = 2000000; |
e93cafe45 [MTD] [NOR] cfi_c... |
526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 |
if (cfi->cfiq->WordWriteTimeoutTyp && cfi->cfiq->WordWriteTimeoutMax) cfi->chips[i].word_write_time_max = 1<<(cfi->cfiq->WordWriteTimeoutTyp + cfi->cfiq->WordWriteTimeoutMax); else cfi->chips[i].word_write_time_max = 50000 * 8; if (cfi->cfiq->BufWriteTimeoutTyp && cfi->cfiq->BufWriteTimeoutMax) cfi->chips[i].buffer_write_time_max = 1<<(cfi->cfiq->BufWriteTimeoutTyp + cfi->cfiq->BufWriteTimeoutMax); if (cfi->cfiq->BlockEraseTimeoutTyp && cfi->cfiq->BlockEraseTimeoutMax) cfi->chips[i].erase_time_max = 1000<<(cfi->cfiq->BlockEraseTimeoutTyp + cfi->cfiq->BlockEraseTimeoutMax); else cfi->chips[i].erase_time_max = 2000000 * 8; |
1da177e4c Linux-2.6.12-rc2 |
547 |
cfi->chips[i].ref_point_counter = 0; |
c314b6f1f [PATCH] cfi: init... |
548 |
init_waitqueue_head(&(cfi->chips[i].wq)); |
1f948b43f [MTD] chips: Clea... |
549 |
} |
1da177e4c Linux-2.6.12-rc2 |
550 551 |
map->fldrv = &cfi_intelext_chipdrv; |
1f948b43f [MTD] chips: Clea... |
552 |
|
1da177e4c Linux-2.6.12-rc2 |
553 554 |
return cfi_intelext_setup(mtd); } |
a15bdeef1 Remove use of int... |
555 556 557 558 559 |
struct mtd_info *cfi_cmdset_0003(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001"))); struct mtd_info *cfi_cmdset_0200(struct map_info *map, int primary) __attribute__((alias("cfi_cmdset_0001"))); EXPORT_SYMBOL_GPL(cfi_cmdset_0001); EXPORT_SYMBOL_GPL(cfi_cmdset_0003); EXPORT_SYMBOL_GPL(cfi_cmdset_0200); |
1da177e4c Linux-2.6.12-rc2 |
560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 |
static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; unsigned long offset = 0; int i,j; unsigned long devsize = (1<<cfi->cfiq->DevSize) * cfi->interleave; //printk(KERN_DEBUG "number of CFI chips: %d ", cfi->numchips); mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; |
1f948b43f [MTD] chips: Clea... |
575 |
mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) |
1da177e4c Linux-2.6.12-rc2 |
576 |
* mtd->numeraseregions, GFP_KERNEL); |
1f948b43f [MTD] chips: Clea... |
577 |
if (!mtd->eraseregions) { |
1da177e4c Linux-2.6.12-rc2 |
578 579 580 581 |
printk(KERN_ERR "Failed to allocate memory for MTD erase region info "); goto setup_err; } |
1f948b43f [MTD] chips: Clea... |
582 |
|
1da177e4c Linux-2.6.12-rc2 |
583 584 585 586 587 588 589 590 591 592 593 594 |
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; } for (j=0; j<cfi->numchips; j++) { mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].offset = (j*devsize)+offset; mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].erasesize = ersize; mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].numblocks = ernum; |
0ecbc81ad [MTD] [NOR] Suppo... |
595 |
mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].lockmap = kmalloc(ernum / 8 + 1, GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
596 597 598 599 600 601 602 603 604 605 606 607 |
} offset += (ersize * ernum); } if (offset != devsize) { /* Argh */ printk(KERN_WARNING "Sum of regions (%lx) != total size of set of interleaved chips (%lx) ", offset, devsize); goto setup_err; } for (i=0; i<mtd->numeraseregions;i++){ |
69423d99f [MTD] update inte... |
608 609 610 |
printk(KERN_DEBUG "erase region %d: offset=0x%llx,size=0x%x,blocks=%d ", i,(unsigned long long)mtd->eraseregions[i].offset, |
1da177e4c Linux-2.6.12-rc2 |
611 612 613 |
mtd->eraseregions[i].erasesize, mtd->eraseregions[i].numblocks); } |
f77814dd5 [MTD] Support for... |
614 |
#ifdef CONFIG_MTD_OTP |
1da177e4c Linux-2.6.12-rc2 |
615 |
mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg; |
f77814dd5 [MTD] Support for... |
616 617 618 619 620 |
mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg; mtd->write_user_prot_reg = cfi_intelext_write_user_prot_reg; mtd->lock_user_prot_reg = cfi_intelext_lock_user_prot_reg; mtd->get_fact_prot_info = cfi_intelext_get_fact_prot_info; mtd->get_user_prot_info = cfi_intelext_get_user_prot_info; |
1da177e4c Linux-2.6.12-rc2 |
621 622 623 624 625 626 627 628 |
#endif /* This function has the potential to distort the reality a bit and therefore should be called last. */ if (cfi_intelext_partition_fixup(mtd, &cfi) != 0) goto setup_err; __module_get(THIS_MODULE); |
963a6fb0a [MTD] Add reboot ... |
629 |
register_reboot_notifier(&mtd->reboot_notifier); |
1da177e4c Linux-2.6.12-rc2 |
630 631 632 |
return mtd; setup_err: |
17fabf156 mtd: cfi: remove ... |
633 634 |
kfree(mtd->eraseregions); kfree(mtd); |
1da177e4c Linux-2.6.12-rc2 |
635 636 637 638 639 640 641 642 643 644 645 646 |
kfree(cfi->cmdset_priv); return NULL; } static int cfi_intelext_partition_fixup(struct mtd_info *mtd, struct cfi_private **pcfi) { struct map_info *map = mtd->priv; struct cfi_private *cfi = *pcfi; struct cfi_pri_intelext *extp = cfi->cmdset_priv; /* |
8f1a866fc [MTD] [CHIPS] fix... |
647 |
* Probing of multi-partition flash chips. |
1da177e4c Linux-2.6.12-rc2 |
648 649 650 651 652 653 654 655 656 |
* * To support multiple partitions when available, we simply arrange * for each of them to have their own flchip structure even if they * are on the same physical chip. This means completely recreating * a new cfi_private structure right here which is a blatent code * layering violation, but this is still the least intrusive * arrangement at this point. This can be rearranged in the future * if someone feels motivated enough. --nico */ |
638d98384 {MTD] add support... |
657 |
if (extp && extp->MajorVersion == '1' && extp->MinorVersion >= '3' |
1da177e4c Linux-2.6.12-rc2 |
658 659 660 661 662 663 664 |
&& extp->FeatureSupport & (1 << 9)) { struct cfi_private *newcfi; struct flchip *chip; struct flchip_shared *shared; int offs, numregions, numparts, partshift, numvirtchips, i, j; /* Protection Register info */ |
72b56a2d7 [MTD] Add OTP basisc |
665 666 |
offs = (extp->NumProtectionFields - 1) * sizeof(struct cfi_intelext_otpinfo); |
1da177e4c Linux-2.6.12-rc2 |
667 668 |
/* Burst Read info */ |
6f6ed056d [MTD] chips/cfi_c... |
669 |
offs += extp->extra[offs+1]+2; |
1da177e4c Linux-2.6.12-rc2 |
670 671 672 673 |
/* Number of partition regions */ numregions = extp->extra[offs]; offs += 1; |
638d98384 {MTD] add support... |
674 675 676 |
/* skip the sizeof(partregion) field in CFI 1.4 */ if (extp->MinorVersion >= '4') offs += 2; |
1da177e4c Linux-2.6.12-rc2 |
677 678 679 680 681 682 683 684 685 686 |
/* Number of hardware partitions */ numparts = 0; for (i = 0; i < numregions; i++) { struct cfi_intelext_regioninfo *rinfo; rinfo = (struct cfi_intelext_regioninfo *)&extp->extra[offs]; numparts += rinfo->NumIdentPartitions; offs += sizeof(*rinfo) + (rinfo->NumBlockTypes - 1) * sizeof(struct cfi_intelext_blockinfo); } |
fe224668d [MTD] [NOR] Fix I... |
687 688 |
if (!numparts) numparts = 1; |
638d98384 {MTD] add support... |
689 690 691 692 |
/* Programming Region info */ if (extp->MinorVersion >= '4') { struct cfi_intelext_programming_regioninfo *prinfo; prinfo = (struct cfi_intelext_programming_regioninfo *)&extp->extra[offs]; |
28318776a [MTD] Introduce w... |
693 |
mtd->writesize = cfi->interleave << prinfo->ProgRegShift; |
5fa433942 [MTD] Introduce M... |
694 |
mtd->flags &= ~MTD_BIT_WRITEABLE; |
638d98384 {MTD] add support... |
695 696 |
printk(KERN_DEBUG "%s: program region size/ctrl_valid/ctrl_inval = %d/%d/%d ", |
28318776a [MTD] Introduce w... |
697 |
map->name, mtd->writesize, |
d41608557 [MTD] [NOR] Intel... |
698 699 |
cfi->interleave * prinfo->ControlValid, cfi->interleave * prinfo->ControlInvalid); |
638d98384 {MTD] add support... |
700 |
} |
1da177e4c Linux-2.6.12-rc2 |
701 702 703 704 705 706 707 708 709 710 711 |
/* * All functions below currently rely on all chips having * the same geometry so we'll just assume that all hardware * partitions are of the same size too. */ partshift = cfi->chipshift - __ffs(numparts); if ((1 << partshift) < mtd->erasesize) { printk( KERN_ERR "%s: bad number of hw partitions (%d) ", |
cb53b3b99 [MTD] replace rem... |
712 |
__func__, numparts); |
1da177e4c Linux-2.6.12-rc2 |
713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 |
return -EINVAL; } numvirtchips = cfi->numchips * numparts; newcfi = kmalloc(sizeof(struct cfi_private) + numvirtchips * sizeof(struct flchip), GFP_KERNEL); if (!newcfi) return -ENOMEM; shared = kmalloc(sizeof(struct flchip_shared) * cfi->numchips, GFP_KERNEL); if (!shared) { kfree(newcfi); return -ENOMEM; } memcpy(newcfi, cfi, sizeof(struct cfi_private)); newcfi->numchips = numvirtchips; newcfi->chipshift = partshift; chip = &newcfi->chips[0]; for (i = 0; i < cfi->numchips; i++) { shared[i].writing = shared[i].erasing = NULL; |
8ae664184 mtd: change struc... |
732 |
mutex_init(&shared[i].lock); |
1da177e4c Linux-2.6.12-rc2 |
733 734 735 736 737 738 739 |
for (j = 0; j < numparts; j++) { *chip = cfi->chips[i]; chip->start += j << partshift; chip->priv = &shared[i]; /* those should be reset too since they create memory references. */ init_waitqueue_head(&chip->wq); |
c4e773764 mtd: fix a huge l... |
740 |
mutex_init(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 |
chip++; } } printk(KERN_DEBUG "%s: %d set(s) of %d interleaved chips " "--> %d partitions of %d KiB ", map->name, cfi->numchips, cfi->interleave, newcfi->numchips, 1<<(newcfi->chipshift-10)); map->fldrv_priv = newcfi; *pcfi = newcfi; kfree(cfi); } return 0; } /* * *********** CHIP ACCESS FUNCTIONS *********** */ |
5a37cf19e [MTD] [NOR] Fix d... |
762 |
static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode) |
1da177e4c Linux-2.6.12-rc2 |
763 764 765 766 |
{ DECLARE_WAITQUEUE(wait, current); struct cfi_private *cfi = map->fldrv_priv; map_word status, status_OK = CMD(0x80), status_PWS = CMD(0x01); |
1da177e4c Linux-2.6.12-rc2 |
767 |
struct cfi_pri_intelext *cfip = cfi->cmdset_priv; |
5a37cf19e [MTD] [NOR] Fix d... |
768 |
unsigned long timeo = jiffies + HZ; |
1da177e4c Linux-2.6.12-rc2 |
769 |
|
3afe7eb37 [MTD] [NOR] fix c... |
770 771 772 |
/* Prevent setting state FL_SYNCING for chip in suspended state. */ if (mode == FL_SYNCING && chip->oldstate != FL_READY) goto sleep; |
1da177e4c Linux-2.6.12-rc2 |
773 774 775 776 777 778 779 780 781 782 783 784 |
switch (chip->state) { case FL_STATUS: for (;;) { status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; /* At this point we're fine with write operations in other partitions as they don't conflict. */ if (chip->priv && map_word_andequal(map, status, status_PWS, status_PWS)) break; |
c4e773764 mtd: fix a huge l... |
785 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
786 |
cfi_udelay(1); |
c4e773764 mtd: fix a huge l... |
787 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
788 |
/* Someone else might have been playing with it. */ |
5a37cf19e [MTD] [NOR] Fix d... |
789 |
return -EAGAIN; |
1da177e4c Linux-2.6.12-rc2 |
790 |
} |
fb6d080c6 mtd: fix broken s... |
791 |
/* Fall through */ |
1da177e4c Linux-2.6.12-rc2 |
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 |
case FL_READY: case FL_CFI_QUERY: case FL_JEDEC_QUERY: return 0; case FL_ERASING: if (!cfip || !(cfip->FeatureSupport & 2) || !(mode == FL_READY || mode == FL_POINT || (mode == FL_WRITING && (cfip->SuspendCmdSupport & 1)))) goto sleep; /* Erase suspend */ map_write(map, CMD(0xB0), adr); /* If the flash has finished erasing, then 'erase suspend' * appears to make some (28F320) flash devices switch to * 'read' mode. Make sure that we switch to 'read status' * mode so we get the right data. --rmk */ map_write(map, CMD(0x70), adr); chip->oldstate = FL_ERASING; chip->state = FL_ERASE_SUSPENDING; chip->erase_suspended = 1; for (;;) { status = map_read(map, adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; if (time_after(jiffies, timeo)) { |
100f2341e mtd: fix hang-up ... |
823 824 825 |
/* Urgh. Resume and pretend we weren't here. * Make sure we're in 'read status' mode if it had finished */ put_chip(map, chip, adr); |
4843653ca [MTD] cleanups to... |
826 827 828 |
printk(KERN_ERR "%s: Chip not ready after erase " "suspended: status = 0x%lx ", map->name, status.x[0]); |
1da177e4c Linux-2.6.12-rc2 |
829 830 |
return -EIO; } |
c4e773764 mtd: fix a huge l... |
831 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
832 |
cfi_udelay(1); |
c4e773764 mtd: fix a huge l... |
833 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
834 835 836 837 838 839 840 841 842 843 844 845 846 |
/* Nobody will touch it while it's in state FL_ERASE_SUSPENDING. So we can just loop here. */ } chip->state = FL_STATUS; return 0; case FL_XIP_WHILE_ERASING: if (mode != FL_READY && mode != FL_POINT && (mode != FL_WRITING || !cfip || !(cfip->SuspendCmdSupport&1))) goto sleep; chip->oldstate = chip->state; chip->state = FL_READY; return 0; |
fb6d080c6 mtd: fix broken s... |
847 848 849 |
case FL_SHUTDOWN: /* The machine is rebooting now,so no one can get chip anymore */ return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
850 851 852 853 |
case FL_POINT: /* Only if there's no operation suspended... */ if (mode == FL_READY && chip->oldstate == FL_READY) return 0; |
fb6d080c6 mtd: fix broken s... |
854 |
/* Fall through */ |
1da177e4c Linux-2.6.12-rc2 |
855 856 857 858 |
default: sleep: set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
859 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
860 861 |
schedule(); remove_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
862 |
mutex_lock(&chip->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
863 864 865 866 867 868 869 |
return -EAGAIN; } } static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode) { int ret; |
6c24e4161 [MTD] [NOR] Preve... |
870 |
DECLARE_WAITQUEUE(wait, current); |
5a37cf19e [MTD] [NOR] Fix d... |
871 872 |
retry: |
3afe7eb37 [MTD] [NOR] fix c... |
873 874 875 |
if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING || mode == FL_OTP_WRITE || mode == FL_SHUTDOWN) && chip->state != FL_SYNCING) { |
5a37cf19e [MTD] [NOR] Fix d... |
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 |
/* * OK. We have possibility for contention on the write/erase * operations which are global to the real chip and not per * partition. So let's fight it over in the partition which * currently has authority on the operation. * * The rules are as follows: * * - any write operation must own shared->writing. * * - any erase operation must own _both_ shared->writing and * shared->erasing. * * - contention arbitration is handled in the owner's context. * * The 'shared' struct can be read and/or written only when * its lock is taken. */ struct flchip_shared *shared = chip->priv; struct flchip *contender; |
8ae664184 mtd: change struc... |
896 |
mutex_lock(&shared->lock); |
5a37cf19e [MTD] [NOR] Fix d... |
897 898 899 900 901 902 903 904 905 906 907 |
contender = shared->writing; if (contender && contender != chip) { /* * The engine to perform desired operation on this * partition is already in use by someone else. * Let's fight over it in the context of the chip * currently using it. If it is possible to suspend, * that other partition will do just that, otherwise * it'll happily send us to sleep. In any case, when * get_chip returns success we're clear to go ahead. */ |
c4e773764 mtd: fix a huge l... |
908 |
ret = mutex_trylock(&contender->mutex); |
8ae664184 mtd: change struc... |
909 |
mutex_unlock(&shared->lock); |
5a37cf19e [MTD] [NOR] Fix d... |
910 911 |
if (!ret) goto retry; |
c4e773764 mtd: fix a huge l... |
912 |
mutex_unlock(&chip->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
913 |
ret = chip_ready(map, contender, contender->start, mode); |
c4e773764 mtd: fix a huge l... |
914 |
mutex_lock(&chip->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
915 916 |
if (ret == -EAGAIN) { |
c4e773764 mtd: fix a huge l... |
917 |
mutex_unlock(&contender->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
918 919 920 |
goto retry; } if (ret) { |
c4e773764 mtd: fix a huge l... |
921 |
mutex_unlock(&contender->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
922 923 |
return ret; } |
8ae664184 mtd: change struc... |
924 |
mutex_lock(&shared->lock); |
3afe7eb37 [MTD] [NOR] fix c... |
925 926 927 928 929 |
/* We should not own chip if it is already * in FL_SYNCING state. Put contender and retry. */ if (chip->state == FL_SYNCING) { put_chip(map, contender, contender->start); |
c4e773764 mtd: fix a huge l... |
930 |
mutex_unlock(&contender->mutex); |
3afe7eb37 [MTD] [NOR] fix c... |
931 932 |
goto retry; } |
c4e773764 mtd: fix a huge l... |
933 |
mutex_unlock(&contender->mutex); |
5a37cf19e [MTD] [NOR] Fix d... |
934 |
} |
6c24e4161 [MTD] [NOR] Preve... |
935 936 937 938 |
/* Check if we already have suspended erase * on this chip. Sleep. */ if (mode == FL_ERASING && shared->erasing && shared->erasing->oldstate == FL_ERASING) { |
8ae664184 mtd: change struc... |
939 |
mutex_unlock(&shared->lock); |
6c24e4161 [MTD] [NOR] Preve... |
940 941 |
set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
942 |
mutex_unlock(&chip->mutex); |
6c24e4161 [MTD] [NOR] Preve... |
943 944 |
schedule(); remove_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
945 |
mutex_lock(&chip->mutex); |
6c24e4161 [MTD] [NOR] Preve... |
946 947 |
goto retry; } |
5a37cf19e [MTD] [NOR] Fix d... |
948 949 950 951 |
/* We now own it */ shared->writing = chip; if (mode == FL_ERASING) shared->erasing = chip; |
8ae664184 mtd: change struc... |
952 |
mutex_unlock(&shared->lock); |
1da177e4c Linux-2.6.12-rc2 |
953 |
} |
5a37cf19e [MTD] [NOR] Fix d... |
954 955 956 957 958 |
ret = chip_ready(map, chip, adr, mode); if (ret == -EAGAIN) goto retry; return ret; |
1da177e4c Linux-2.6.12-rc2 |
959 960 961 962 963 964 965 966 |
} static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr) { struct cfi_private *cfi = map->fldrv_priv; if (chip->priv) { struct flchip_shared *shared = chip->priv; |
8ae664184 mtd: change struc... |
967 |
mutex_lock(&shared->lock); |
1da177e4c Linux-2.6.12-rc2 |
968 969 970 971 972 973 |
if (shared->writing == chip && chip->oldstate == FL_READY) { /* We own the ability to write, but we're done */ shared->writing = shared->erasing; if (shared->writing && shared->writing != chip) { /* give back ownership to who we loaned it from */ struct flchip *loaner = shared->writing; |
c4e773764 mtd: fix a huge l... |
974 |
mutex_lock(&loaner->mutex); |
8ae664184 mtd: change struc... |
975 |
mutex_unlock(&shared->lock); |
c4e773764 mtd: fix a huge l... |
976 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
977 |
put_chip(map, loaner, loaner->start); |
c4e773764 mtd: fix a huge l... |
978 979 |
mutex_lock(&chip->mutex); mutex_unlock(&loaner->mutex); |
1da177e4c Linux-2.6.12-rc2 |
980 981 982 983 984 985 986 987 988 989 990 991 992 |
wake_up(&chip->wq); return; } shared->erasing = NULL; shared->writing = NULL; } else if (shared->erasing == chip && shared->writing != chip) { /* * We own the ability to erase without the ability * to write, which means the erase was suspended * and some other partition is currently writing. * Don't let the switch below mess things up since * we don't have ownership to resume anything. */ |
8ae664184 mtd: change struc... |
993 |
mutex_unlock(&shared->lock); |
1da177e4c Linux-2.6.12-rc2 |
994 995 996 |
wake_up(&chip->wq); return; } |
8ae664184 mtd: change struc... |
997 |
mutex_unlock(&shared->lock); |
1da177e4c Linux-2.6.12-rc2 |
998 999 1000 1001 |
} switch(chip->oldstate) { case FL_ERASING: |
1f948b43f [MTD] chips: Clea... |
1002 |
/* What if one interleaved chip has finished and the |
1da177e4c Linux-2.6.12-rc2 |
1003 |
other hasn't? The old code would leave the finished |
1f948b43f [MTD] chips: Clea... |
1004 |
one in READY mode. That's bad, and caused -EROFS |
1da177e4c Linux-2.6.12-rc2 |
1005 1006 |
errors to be returned from do_erase_oneblock because that's the only bit it checked for at the time. |
1f948b43f [MTD] chips: Clea... |
1007 |
As the state machine appears to explicitly allow |
1da177e4c Linux-2.6.12-rc2 |
1008 |
sending the 0x70 (Read Status) command to an erasing |
1f948b43f [MTD] chips: Clea... |
1009 |
chip and expecting it to be ignored, that's what we |
1da177e4c Linux-2.6.12-rc2 |
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 |
do. */ map_write(map, CMD(0xd0), adr); map_write(map, CMD(0x70), adr); chip->oldstate = FL_READY; chip->state = FL_ERASING; break; case FL_XIP_WHILE_ERASING: chip->state = chip->oldstate; chip->oldstate = FL_READY; break; case FL_READY: case FL_STATUS: case FL_JEDEC_QUERY: /* We should really make set_vpp() count, rather than doing this */ DISABLE_VPP(map); break; default: |
4843653ca [MTD] cleanups to... |
1029 1030 |
printk(KERN_ERR "%s: put_chip() called with oldstate %d!! ", map->name, chip->oldstate); |
1da177e4c Linux-2.6.12-rc2 |
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 |
} wake_up(&chip->wq); } #ifdef CONFIG_MTD_XIP /* * No interrupt what so ever can be serviced while the flash isn't in array * mode. This is ensured by the xip_disable() and xip_enable() functions * enclosing any code path where the flash is known not to be in array mode. * And within a XIP disabled code path, only functions marked with __xipram * may be called and nothing else (it's a good thing to inspect generated * assembly to make sure inline functions were actually inlined and that gcc * didn't emit calls to its own support functions). Also configuring MTD CFI * support to a single buswidth and a single interleave is also recommended. |
1da177e4c Linux-2.6.12-rc2 |
1046 1047 1048 1049 1050 1051 1052 |
*/ static void xip_disable(struct map_info *map, struct flchip *chip, unsigned long adr) { /* TODO: chips with no XIP use should ignore and return */ (void) map_read(map, adr); /* ensure mmu mapping is up to date */ |
1da177e4c Linux-2.6.12-rc2 |
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 |
local_irq_disable(); } static void __xipram xip_enable(struct map_info *map, struct flchip *chip, unsigned long adr) { struct cfi_private *cfi = map->fldrv_priv; if (chip->state != FL_POINT && chip->state != FL_READY) { map_write(map, CMD(0xff), adr); chip->state = FL_READY; } (void) map_read(map, adr); |
97f927a4d [MTD] XIP cleanup |
1065 |
xip_iprefetch(); |
1da177e4c Linux-2.6.12-rc2 |
1066 |
local_irq_enable(); |
1da177e4c Linux-2.6.12-rc2 |
1067 1068 1069 1070 |
} /* * When a delay is required for the flash operation to complete, the |
c172471b7 cfi_cmdset_0001: ... |
1071 1072 1073 1074 1075 1076 1077 |
* xip_wait_for_operation() 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 or write 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 of the delay period. |
1da177e4c Linux-2.6.12-rc2 |
1078 1079 1080 |
* * Warning: this function _will_ fool interrupt latency tracing tools. */ |
c172471b7 cfi_cmdset_0001: ... |
1081 1082 |
static int __xipram xip_wait_for_operation( struct map_info *map, struct flchip *chip, |
e93cafe45 [MTD] [NOR] cfi_c... |
1083 |
unsigned long adr, unsigned int chip_op_time_max) |
1da177e4c Linux-2.6.12-rc2 |
1084 1085 1086 1087 |
{ struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *cfip = cfi->cmdset_priv; map_word status, OK = CMD(0x80); |
c172471b7 cfi_cmdset_0001: ... |
1088 |
unsigned long usec, suspended, start, done; |
1da177e4c Linux-2.6.12-rc2 |
1089 |
flstate_t oldstate, newstate; |
c172471b7 cfi_cmdset_0001: ... |
1090 |
start = xip_currtime(); |
e93cafe45 [MTD] [NOR] cfi_c... |
1091 |
usec = chip_op_time_max; |
c172471b7 cfi_cmdset_0001: ... |
1092 1093 1094 |
if (usec == 0) usec = 500000; done = 0; |
1da177e4c Linux-2.6.12-rc2 |
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 |
do { cpu_relax(); if (xip_irqpending() && cfip && ((chip->state == FL_ERASING && (cfip->FeatureSupport&2)) || (chip->state == FL_WRITING && (cfip->FeatureSupport&4))) && (cfi_interleave_is_1(cfi) || chip->oldstate == FL_READY)) { /* * Let's suspend the erase or write 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 * we resume the whole thing at once). Yes, it * can happen! */ |
c172471b7 cfi_cmdset_0001: ... |
1111 |
usec -= done; |
1da177e4c Linux-2.6.12-rc2 |
1112 1113 |
map_write(map, CMD(0xb0), adr); map_write(map, CMD(0x70), adr); |
1da177e4c Linux-2.6.12-rc2 |
1114 1115 1116 1117 1118 1119 1120 1121 1122 |
suspended = xip_currtime(); do { if (xip_elapsed_since(suspended) > 100000) { /* * The chip doesn't want to suspend * after waiting for 100 msecs. * This is a critical error but there * is not much we can do here. */ |
c172471b7 cfi_cmdset_0001: ... |
1123 |
return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 |
} status = map_read(map, adr); } while (!map_word_andequal(map, status, OK, OK)); /* Suspend succeeded */ oldstate = chip->state; if (oldstate == FL_ERASING) { if (!map_word_bitsset(map, status, CMD(0x40))) break; newstate = FL_XIP_WHILE_ERASING; chip->erase_suspended = 1; } else { if (!map_word_bitsset(map, status, CMD(0x04))) break; newstate = FL_XIP_WHILE_WRITING; chip->write_suspended = 1; } chip->state = newstate; map_write(map, CMD(0xff), adr); (void) map_read(map, adr); |
ca5c23c3b [MTD] XIP: Use ge... |
1144 |
xip_iprefetch(); |
1da177e4c Linux-2.6.12-rc2 |
1145 |
local_irq_enable(); |
c4e773764 mtd: fix a huge l... |
1146 |
mutex_unlock(&chip->mutex); |
ca5c23c3b [MTD] XIP: Use ge... |
1147 |
xip_iprefetch(); |
1da177e4c Linux-2.6.12-rc2 |
1148 1149 1150 1151 1152 1153 1154 1155 |
cond_resched(); /* * We're back. However someone else might have * decided to go write to the chip if we are in * a suspended erase state. If so let's wait * until it's done. */ |
c4e773764 mtd: fix a huge l... |
1156 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1157 1158 1159 1160 |
while (chip->state != newstate) { DECLARE_WAITQUEUE(wait, current); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
1161 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1162 1163 |
schedule(); remove_wait_queue(&chip->wq, &wait); |
c4e773764 mtd: fix a huge l... |
1164 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 |
} /* Disallow XIP again */ local_irq_disable(); /* Resume the write or erase operation */ map_write(map, CMD(0xd0), adr); map_write(map, CMD(0x70), adr); chip->state = oldstate; start = xip_currtime(); } else if (usec >= 1000000/HZ) { /* * Try to save on CPU power when waiting delay * is at least a system timer tick period. * No need to be extremely accurate here. */ xip_cpu_idle(); } status = map_read(map, adr); |
c172471b7 cfi_cmdset_0001: ... |
1183 |
done = xip_elapsed_since(start); |
1da177e4c Linux-2.6.12-rc2 |
1184 |
} while (!map_word_andequal(map, status, OK, OK) |
c172471b7 cfi_cmdset_0001: ... |
1185 |
&& done < usec); |
1da177e4c Linux-2.6.12-rc2 |
1186 |
|
c172471b7 cfi_cmdset_0001: ... |
1187 1188 |
return (done >= usec) ? -ETIME : 0; } |
1da177e4c Linux-2.6.12-rc2 |
1189 1190 1191 1192 1193 |
/* * The INVALIDATE_CACHED_RANGE() macro is normally used in parallel while * the flash is actively programming or erasing since we have to poll for * the operation to complete anyway. We can't do that in a generic way with |
6da70124a [MTD] CFI flash l... |
1194 |
* a XIP setup so do it before the actual flash operation in this case |
c172471b7 cfi_cmdset_0001: ... |
1195 |
* and stub it out from INVAL_CACHE_AND_WAIT. |
1da177e4c Linux-2.6.12-rc2 |
1196 |
*/ |
6da70124a [MTD] CFI flash l... |
1197 1198 |
#define XIP_INVAL_CACHED_RANGE(map, from, size) \ INVALIDATE_CACHED_RANGE(map, from, size) |
e93cafe45 [MTD] [NOR] cfi_c... |
1199 1200 |
#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec, usec_max) \ xip_wait_for_operation(map, chip, cmd_adr, usec_max) |
1da177e4c Linux-2.6.12-rc2 |
1201 1202 1203 1204 1205 |
#else #define xip_disable(map, chip, adr) #define xip_enable(map, chip, adr) |
1da177e4c Linux-2.6.12-rc2 |
1206 |
#define XIP_INVAL_CACHED_RANGE(x...) |
c172471b7 cfi_cmdset_0001: ... |
1207 1208 1209 1210 1211 |
#define INVAL_CACHE_AND_WAIT inval_cache_and_wait_for_operation static int inval_cache_and_wait_for_operation( struct map_info *map, struct flchip *chip, unsigned long cmd_adr, unsigned long inval_adr, int inval_len, |
e93cafe45 [MTD] [NOR] cfi_c... |
1212 |
unsigned int chip_op_time, unsigned int chip_op_time_max) |
c172471b7 cfi_cmdset_0001: ... |
1213 1214 1215 |
{ struct cfi_private *cfi = map->fldrv_priv; map_word status, status_OK = CMD(0x80); |
46a1652c2 [MTD] Fixes of pe... |
1216 |
int chip_state = chip->state; |
998453fbf [MTD] [NOR] Fix -... |
1217 |
unsigned int timeo, sleep_time, reset_timeo; |
c172471b7 cfi_cmdset_0001: ... |
1218 |
|
c4e773764 mtd: fix a huge l... |
1219 |
mutex_unlock(&chip->mutex); |
c172471b7 cfi_cmdset_0001: ... |
1220 1221 |
if (inval_len) INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len); |
c4e773764 mtd: fix a huge l... |
1222 |
mutex_lock(&chip->mutex); |
c172471b7 cfi_cmdset_0001: ... |
1223 |
|
e93cafe45 [MTD] [NOR] cfi_c... |
1224 |
timeo = chip_op_time_max; |
46a1652c2 [MTD] Fixes of pe... |
1225 1226 |
if (!timeo) timeo = 500000; |
998453fbf [MTD] [NOR] Fix -... |
1227 |
reset_timeo = timeo; |
46a1652c2 [MTD] Fixes of pe... |
1228 |
sleep_time = chip_op_time / 2; |
c172471b7 cfi_cmdset_0001: ... |
1229 |
|
c172471b7 cfi_cmdset_0001: ... |
1230 |
for (;;) { |
ecf3fde07 mtd: fix race in ... |
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 |
if (chip->state != chip_state) { /* Someone's suspended the operation: sleep */ DECLARE_WAITQUEUE(wait, current); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&chip->wq, &wait); mutex_unlock(&chip->mutex); schedule(); remove_wait_queue(&chip->wq, &wait); mutex_lock(&chip->mutex); continue; } |
c172471b7 cfi_cmdset_0001: ... |
1242 1243 1244 |
status = map_read(map, cmd_adr); if (map_word_andequal(map, status, status_OK, status_OK)) break; |
1da177e4c Linux-2.6.12-rc2 |
1245 |
|
ecf3fde07 mtd: fix race in ... |
1246 |
if (chip->erase_suspended && chip_state == FL_ERASING) { |
25985edce Fix common misspe... |
1247 |
/* Erase suspend occurred while sleep: reset timeout */ |
ecf3fde07 mtd: fix race in ... |
1248 1249 1250 1251 |
timeo = reset_timeo; chip->erase_suspended = 0; } if (chip->write_suspended && chip_state == FL_WRITING) { |
25985edce Fix common misspe... |
1252 |
/* Write suspend occurred while sleep: reset timeout */ |
ecf3fde07 mtd: fix race in ... |
1253 1254 1255 |
timeo = reset_timeo; chip->write_suspended = 0; } |
46a1652c2 [MTD] Fixes of pe... |
1256 |
if (!timeo) { |
c172471b7 cfi_cmdset_0001: ... |
1257 1258 1259 1260 |
map_write(map, CMD(0x70), cmd_adr); chip->state = FL_STATUS; return -ETIME; } |
46a1652c2 [MTD] Fixes of pe... |
1261 |
/* OK Still waiting. Drop the lock, wait a while and retry. */ |
c4e773764 mtd: fix a huge l... |
1262 |
mutex_unlock(&chip->mutex); |
46a1652c2 [MTD] Fixes of pe... |
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 |
if (sleep_time >= 1000000/HZ) { /* * Half of the normal delay still remaining * can be performed with a sleeping delay instead * of busy waiting. */ msleep(sleep_time/1000); timeo -= sleep_time; sleep_time = 1000000/HZ; } else { udelay(1); cond_resched(); timeo--; } |
c4e773764 mtd: fix a huge l... |
1277 |
mutex_lock(&chip->mutex); |
46a1652c2 [MTD] Fixes of pe... |
1278 |
} |
c172471b7 cfi_cmdset_0001: ... |
1279 1280 1281 1282 1283 |
/* Done and happy. */ chip->state = FL_STATUS; return 0; } |
6da70124a [MTD] CFI flash l... |
1284 |
|
1da177e4c Linux-2.6.12-rc2 |
1285 |
#endif |
e93cafe45 [MTD] [NOR] cfi_c... |
1286 1287 |
#define WAIT_TIMEOUT(map, chip, adr, udelay, udelay_max) \ INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay, udelay_max); |
c172471b7 cfi_cmdset_0001: ... |
1288 |
|
1da177e4c Linux-2.6.12-rc2 |
1289 1290 1291 1292 1293 1294 1295 |
static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len) { unsigned long cmd_addr; struct cfi_private *cfi = map->fldrv_priv; int ret = 0; adr += chip->start; |
1f948b43f [MTD] chips: Clea... |
1296 1297 |
/* Ensure cmd read/writes are aligned. */ cmd_addr = adr & ~(map_bankwidth(map)-1); |
1da177e4c Linux-2.6.12-rc2 |
1298 |
|
c4e773764 mtd: fix a huge l... |
1299 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 |
ret = get_chip(map, chip, cmd_addr, FL_POINT); if (!ret) { if (chip->state != FL_POINT && chip->state != FL_READY) map_write(map, CMD(0xff), cmd_addr); chip->state = FL_POINT; chip->ref_point_counter++; } |
c4e773764 mtd: fix a huge l... |
1310 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1311 1312 1313 |
return ret; } |
a98889f3d [MTD][NOR] Add ph... |
1314 1315 |
static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, void **virt, resource_size_t *phys) |
1da177e4c Linux-2.6.12-rc2 |
1316 1317 1318 |
{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
097f2576e [MTD] fix CFI poi... |
1319 |
unsigned long ofs, last_end = 0; |
1da177e4c Linux-2.6.12-rc2 |
1320 1321 1322 1323 1324 |
int chipnum; int ret = 0; if (!map->virt || (from + len > mtd->size)) return -EINVAL; |
1f948b43f [MTD] chips: Clea... |
1325 |
|
1da177e4c Linux-2.6.12-rc2 |
1326 1327 1328 1329 1330 |
/* Now lock the chip(s) to POINT state */ /* ofs: offset within the first chip that the first read should start */ chipnum = (from >> cfi->chipshift); ofs = from - (chipnum << cfi->chipshift); |
a98889f3d [MTD][NOR] Add ph... |
1331 |
*virt = map->virt + cfi->chips[chipnum].start + ofs; |
097f2576e [MTD] fix CFI poi... |
1332 |
*retlen = 0; |
a98889f3d [MTD][NOR] Add ph... |
1333 1334 |
if (phys) *phys = map->phys + cfi->chips[chipnum].start + ofs; |
097f2576e [MTD] fix CFI poi... |
1335 |
|
1da177e4c Linux-2.6.12-rc2 |
1336 1337 1338 1339 1340 |
while (len) { unsigned long thislen; if (chipnum >= cfi->numchips) break; |
097f2576e [MTD] fix CFI poi... |
1341 1342 1343 1344 1345 |
/* We cannot point across chips that are virtually disjoint */ if (!last_end) last_end = cfi->chips[chipnum].start; else if (cfi->chips[chipnum].start != last_end) break; |
1da177e4c Linux-2.6.12-rc2 |
1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 |
if ((len + ofs -1) >> cfi->chipshift) thislen = (1<<cfi->chipshift) - ofs; else thislen = len; ret = do_point_onechip(map, &cfi->chips[chipnum], ofs, thislen); if (ret) break; *retlen += thislen; len -= thislen; |
1f948b43f [MTD] chips: Clea... |
1357 |
|
1da177e4c Linux-2.6.12-rc2 |
1358 |
ofs = 0; |
097f2576e [MTD] fix CFI poi... |
1359 |
last_end += 1 << cfi->chipshift; |
1da177e4c Linux-2.6.12-rc2 |
1360 1361 1362 1363 |
chipnum++; } return 0; } |
a98889f3d [MTD][NOR] Add ph... |
1364 |
static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len) |
1da177e4c Linux-2.6.12-rc2 |
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 |
{ struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; unsigned long ofs; int chipnum; /* Now unlock the chip(s) POINT state */ /* ofs: offset within the first chip that the first read should start */ chipnum = (from >> cfi->chipshift); ofs = from - (chipnum << cfi->chipshift); while (len) { unsigned long thislen; struct flchip *chip; chip = &cfi->chips[chipnum]; if (chipnum >= cfi->numchips) break; if ((len + ofs -1) >> cfi->chipshift) thislen = (1<<cfi->chipshift) - ofs; else thislen = len; |
c4e773764 mtd: fix a huge l... |
1389 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1390 1391 1392 1393 1394 |
if (chip->state == FL_POINT) { chip->ref_point_counter--; if(chip->ref_point_counter == 0) chip->state = FL_READY; } else |
4843653ca [MTD] cleanups to... |
1395 1396 |
printk(KERN_ERR "%s: Warning: unpoint called on non pointed region ", map->name); /* Should this give an error? */ |
1da177e4c Linux-2.6.12-rc2 |
1397 1398 |
put_chip(map, chip, chip->start); |
c4e773764 mtd: fix a huge l... |
1399 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 |
len -= thislen; ofs = 0; chipnum++; } } static inline int do_read_onechip(struct map_info *map, struct flchip *chip, loff_t adr, size_t len, u_char *buf) { unsigned long cmd_addr; struct cfi_private *cfi = map->fldrv_priv; int ret; adr += chip->start; |
1f948b43f [MTD] chips: Clea... |
1414 1415 |
/* Ensure cmd read/writes are aligned. */ cmd_addr = adr & ~(map_bankwidth(map)-1); |
1da177e4c Linux-2.6.12-rc2 |
1416 |
|
c4e773764 mtd: fix a huge l... |
1417 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1418 1419 |
ret = get_chip(map, chip, cmd_addr, FL_READY); if (ret) { |
c4e773764 mtd: fix a huge l... |
1420 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 |
return ret; } if (chip->state != FL_POINT && chip->state != FL_READY) { map_write(map, CMD(0xff), cmd_addr); chip->state = FL_READY; } map_copy_from(map, buf, adr, len); put_chip(map, chip, cmd_addr); |
c4e773764 mtd: fix a huge l... |
1433 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 |
return 0; } static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; unsigned long ofs; int chipnum; int ret = 0; /* ofs: offset within the first chip that the first read should start */ chipnum = (from >> cfi->chipshift); ofs = from - (chipnum << cfi->chipshift); *retlen = 0; while (len) { unsigned long thislen; if (chipnum >= cfi->numchips) break; if ((len + ofs -1) >> cfi->chipshift) thislen = (1<<cfi->chipshift) - ofs; else thislen = len; ret = do_read_onechip(map, &cfi->chips[chipnum], ofs, thislen, buf); if (ret) break; *retlen += thislen; len -= thislen; buf += thislen; |
1f948b43f [MTD] chips: Clea... |
1469 |
|
1da177e4c Linux-2.6.12-rc2 |
1470 1471 1472 1473 1474 |
ofs = 0; chipnum++; } return ret; } |
1da177e4c Linux-2.6.12-rc2 |
1475 |
static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, |
f77814dd5 [MTD] Support for... |
1476 |
unsigned long adr, map_word datum, int mode) |
1da177e4c Linux-2.6.12-rc2 |
1477 1478 |
{ struct cfi_private *cfi = map->fldrv_priv; |
c172471b7 cfi_cmdset_0001: ... |
1479 1480 |
map_word status, write_cmd; int ret=0; |
1da177e4c Linux-2.6.12-rc2 |
1481 1482 |
adr += chip->start; |
f77814dd5 [MTD] Support for... |
1483 |
switch (mode) { |
638d98384 {MTD] add support... |
1484 |
case FL_WRITING: |
b5d194cea mtd: cfi_cmdset_0... |
1485 |
write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0x40) : CMD(0x41); |
638d98384 {MTD] add support... |
1486 1487 1488 1489 1490 1491 |
break; case FL_OTP_WRITE: write_cmd = CMD(0xc0); break; default: return -EINVAL; |
f77814dd5 [MTD] Support for... |
1492 |
} |
1da177e4c Linux-2.6.12-rc2 |
1493 |
|
c4e773764 mtd: fix a huge l... |
1494 |
mutex_lock(&chip->mutex); |
f77814dd5 [MTD] Support for... |
1495 |
ret = get_chip(map, chip, adr, mode); |
1da177e4c Linux-2.6.12-rc2 |
1496 |
if (ret) { |
c4e773764 mtd: fix a huge l... |
1497 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1498 1499 1500 1501 1502 1503 |
return ret; } XIP_INVAL_CACHED_RANGE(map, adr, map_bankwidth(map)); ENABLE_VPP(map); xip_disable(map, chip, adr); |
f77814dd5 [MTD] Support for... |
1504 |
map_write(map, write_cmd, adr); |
1da177e4c Linux-2.6.12-rc2 |
1505 |
map_write(map, datum, adr); |
f77814dd5 [MTD] Support for... |
1506 |
chip->state = mode; |
1da177e4c Linux-2.6.12-rc2 |
1507 |
|
c172471b7 cfi_cmdset_0001: ... |
1508 1509 |
ret = INVAL_CACHE_AND_WAIT(map, chip, adr, adr, map_bankwidth(map), |
e93cafe45 [MTD] [NOR] cfi_c... |
1510 1511 |
chip->word_write_time, chip->word_write_time_max); |
c172471b7 cfi_cmdset_0001: ... |
1512 1513 1514 1515 1516 |
if (ret) { xip_enable(map, chip, adr); printk(KERN_ERR "%s: word write error (status timeout) ", map->name); goto out; |
1da177e4c Linux-2.6.12-rc2 |
1517 |
} |
1da177e4c Linux-2.6.12-rc2 |
1518 |
|
4843653ca [MTD] cleanups to... |
1519 |
/* check for errors */ |
c172471b7 cfi_cmdset_0001: ... |
1520 |
status = map_read(map, adr); |
4843653ca [MTD] cleanups to... |
1521 1522 1523 1524 |
if (map_word_bitsset(map, status, CMD(0x1a))) { unsigned long chipstatus = MERGESTATUS(status); /* reset status */ |
1da177e4c Linux-2.6.12-rc2 |
1525 |
map_write(map, CMD(0x50), adr); |
1da177e4c Linux-2.6.12-rc2 |
1526 |
map_write(map, CMD(0x70), adr); |
4843653ca [MTD] cleanups to... |
1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 |
xip_enable(map, chip, adr); if (chipstatus & 0x02) { ret = -EROFS; } else if (chipstatus & 0x08) { printk(KERN_ERR "%s: word write error (bad VPP) ", map->name); ret = -EIO; } else { printk(KERN_ERR "%s: word write error (status 0x%lx) ", map->name, chipstatus); ret = -EINVAL; } goto out; |
1da177e4c Linux-2.6.12-rc2 |
1542 1543 1544 1545 |
} xip_enable(map, chip, adr); out: put_chip(map, chip, adr); |
c4e773764 mtd: fix a huge l... |
1546 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 |
return ret; } static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t len, size_t *retlen, const u_char *buf) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; int ret = 0; int chipnum; unsigned long ofs; *retlen = 0; if (!len) return 0; chipnum = to >> cfi->chipshift; ofs = to - (chipnum << cfi->chipshift); /* If it's not bus-aligned, do the first byte write */ if (ofs & (map_bankwidth(map)-1)) { unsigned long bus_ofs = ofs & ~(map_bankwidth(map)-1); int gap = ofs - bus_ofs; int n; map_word datum; n = min_t(int, len, map_bankwidth(map)-gap); datum = map_word_ff(map); datum = map_word_load_partial(map, datum, buf, gap, n); ret = do_write_oneword(map, &cfi->chips[chipnum], |
f77814dd5 [MTD] Support for... |
1578 |
bus_ofs, datum, FL_WRITING); |
1f948b43f [MTD] chips: Clea... |
1579 |
if (ret) |
1da177e4c Linux-2.6.12-rc2 |
1580 1581 1582 1583 1584 1585 1586 1587 |
return ret; len -= n; ofs += n; buf += n; (*retlen) += n; if (ofs >> cfi->chipshift) { |
1f948b43f [MTD] chips: Clea... |
1588 |
chipnum ++; |
1da177e4c Linux-2.6.12-rc2 |
1589 1590 1591 1592 1593 |
ofs = 0; if (chipnum == cfi->numchips) return 0; } } |
1f948b43f [MTD] chips: Clea... |
1594 |
|
1da177e4c Linux-2.6.12-rc2 |
1595 1596 1597 1598 |
while(len >= map_bankwidth(map)) { map_word datum = map_word_load(map, buf); ret = do_write_oneword(map, &cfi->chips[chipnum], |
f77814dd5 [MTD] Support for... |
1599 |
ofs, datum, FL_WRITING); |
1da177e4c Linux-2.6.12-rc2 |
1600 1601 1602 1603 1604 1605 1606 1607 1608 |
if (ret) return ret; ofs += map_bankwidth(map); buf += map_bankwidth(map); (*retlen) += map_bankwidth(map); len -= map_bankwidth(map); if (ofs >> cfi->chipshift) { |
1f948b43f [MTD] chips: Clea... |
1609 |
chipnum ++; |
1da177e4c Linux-2.6.12-rc2 |
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 |
ofs = 0; if (chipnum == cfi->numchips) return 0; } } if (len & (map_bankwidth(map)-1)) { map_word datum; datum = map_word_ff(map); datum = map_word_load_partial(map, datum, buf, 0, len); ret = do_write_oneword(map, &cfi->chips[chipnum], |
f77814dd5 [MTD] Support for... |
1623 |
ofs, datum, FL_WRITING); |
1f948b43f [MTD] chips: Clea... |
1624 |
if (ret) |
1da177e4c Linux-2.6.12-rc2 |
1625 |
return ret; |
1f948b43f [MTD] chips: Clea... |
1626 |
|
1da177e4c Linux-2.6.12-rc2 |
1627 1628 1629 1630 1631 |
(*retlen) += len; } return 0; } |
1f948b43f [MTD] chips: Clea... |
1632 |
static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, |
e102d54ab [MTD] writev supp... |
1633 1634 |
unsigned long adr, const struct kvec **pvec, unsigned long *pvec_seek, int len) |
1da177e4c Linux-2.6.12-rc2 |
1635 1636 |
{ struct cfi_private *cfi = map->fldrv_priv; |
c172471b7 cfi_cmdset_0001: ... |
1637 1638 1639 |
map_word status, write_cmd, datum; unsigned long cmd_adr; int ret, wbufsize, word_gap, words; |
e102d54ab [MTD] writev supp... |
1640 1641 |
const struct kvec *vec; unsigned long vec_seek; |
646fd1278 cache invalidatio... |
1642 1643 |
unsigned long initial_adr; int initial_len = len; |
1da177e4c Linux-2.6.12-rc2 |
1644 1645 1646 |
wbufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; adr += chip->start; |
646fd1278 cache invalidatio... |
1647 |
initial_adr = adr; |
1da177e4c Linux-2.6.12-rc2 |
1648 |
cmd_adr = adr & ~(wbufsize-1); |
638d98384 {MTD] add support... |
1649 |
|
1da177e4c Linux-2.6.12-rc2 |
1650 |
/* Let's determine this according to the interleave only once */ |
b5d194cea mtd: cfi_cmdset_0... |
1651 |
write_cmd = (cfi->cfiq->P_ID != P_ID_INTEL_PERFORMANCE) ? CMD(0xe8) : CMD(0xe9); |
1da177e4c Linux-2.6.12-rc2 |
1652 |
|
c4e773764 mtd: fix a huge l... |
1653 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1654 1655 |
ret = get_chip(map, chip, cmd_adr, FL_WRITING); if (ret) { |
c4e773764 mtd: fix a huge l... |
1656 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1657 1658 |
return ret; } |
646fd1278 cache invalidatio... |
1659 |
XIP_INVAL_CACHED_RANGE(map, initial_adr, initial_len); |
1da177e4c Linux-2.6.12-rc2 |
1660 1661 |
ENABLE_VPP(map); xip_disable(map, chip, cmd_adr); |
151e76590 [MTD] Fix legacy ... |
1662 |
/* §4.8 of the 28FxxxJ3A datasheet says "Any time SR.4 and/or SR.5 is set |
1f948b43f [MTD] chips: Clea... |
1663 |
[...], the device will not accept any more Write to Buffer commands". |
1da177e4c Linux-2.6.12-rc2 |
1664 1665 |
So we must check here and reset those bits if they're set. Otherwise we're just pissing in the wind */ |
6e7a6809c cfi-cmdset-0001: ... |
1666 |
if (chip->state != FL_STATUS) { |
1da177e4c Linux-2.6.12-rc2 |
1667 |
map_write(map, CMD(0x70), cmd_adr); |
6e7a6809c cfi-cmdset-0001: ... |
1668 1669 |
chip->state = FL_STATUS; } |
1da177e4c Linux-2.6.12-rc2 |
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 |
status = map_read(map, cmd_adr); if (map_word_bitsset(map, status, CMD(0x30))) { xip_enable(map, chip, cmd_adr); printk(KERN_WARNING "SR.4 or SR.5 bits set in buffer write (status %lx). Clearing. ", status.x[0]); xip_disable(map, chip, cmd_adr); map_write(map, CMD(0x50), cmd_adr); map_write(map, CMD(0x70), cmd_adr); } chip->state = FL_WRITING_TO_BUFFER; |
c172471b7 cfi_cmdset_0001: ... |
1681 |
map_write(map, write_cmd, cmd_adr); |
e93cafe45 [MTD] [NOR] cfi_c... |
1682 |
ret = WAIT_TIMEOUT(map, chip, cmd_adr, 0, 0); |
c172471b7 cfi_cmdset_0001: ... |
1683 1684 1685 1686 1687 |
if (ret) { /* Argh. Not ready for write to buffer */ map_word Xstatus = map_read(map, cmd_adr); map_write(map, CMD(0x70), cmd_adr); chip->state = FL_STATUS; |
1da177e4c Linux-2.6.12-rc2 |
1688 |
status = map_read(map, cmd_adr); |
c172471b7 cfi_cmdset_0001: ... |
1689 1690 1691 1692 1693 1694 1695 |
map_write(map, CMD(0x50), cmd_adr); map_write(map, CMD(0x70), cmd_adr); xip_enable(map, chip, cmd_adr); printk(KERN_ERR "%s: Chip not ready for buffer write. Xstatus = %lx, status = %lx ", map->name, Xstatus.x[0], status.x[0]); goto out; |
1da177e4c Linux-2.6.12-rc2 |
1696 |
} |
e102d54ab [MTD] writev supp... |
1697 1698 |
/* Figure out the number of words to write */ word_gap = (-adr & (map_bankwidth(map)-1)); |
c8872b069 [MTD] Use DIV_ROU... |
1699 |
words = DIV_ROUND_UP(len - word_gap, map_bankwidth(map)); |
e102d54ab [MTD] writev supp... |
1700 1701 1702 1703 1704 1705 1706 |
if (!word_gap) { words--; } else { word_gap = map_bankwidth(map) - word_gap; adr -= word_gap; datum = map_word_ff(map); } |
1da177e4c Linux-2.6.12-rc2 |
1707 |
/* Write length of data to come */ |
e102d54ab [MTD] writev supp... |
1708 |
map_write(map, CMD(words), cmd_adr ); |
1da177e4c Linux-2.6.12-rc2 |
1709 1710 |
/* Write data */ |
e102d54ab [MTD] writev supp... |
1711 1712 1713 1714 1715 1716 1717 1718 |
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; |
1da177e4c Linux-2.6.12-rc2 |
1719 |
|
e102d54ab [MTD] writev supp... |
1720 1721 |
if (!word_gap && len < map_bankwidth(map)) datum = map_word_ff(map); |
1da177e4c Linux-2.6.12-rc2 |
1722 |
|
e102d54ab [MTD] writev supp... |
1723 |
datum = map_word_load_partial(map, datum, |
1f948b43f [MTD] chips: Clea... |
1724 |
vec->iov_base + vec_seek, |
e102d54ab [MTD] writev supp... |
1725 |
word_gap, n); |
1da177e4c Linux-2.6.12-rc2 |
1726 |
|
e102d54ab [MTD] writev supp... |
1727 1728 1729 1730 1731 1732 1733 |
len -= n; word_gap += n; if (!len || word_gap == map_bankwidth(map)) { map_write(map, datum, adr); adr += map_bankwidth(map); word_gap = 0; } |
1da177e4c Linux-2.6.12-rc2 |
1734 |
|
e102d54ab [MTD] writev supp... |
1735 1736 1737 1738 1739 1740 1741 1742 |
vec_seek += n; if (vec_seek == vec->iov_len) { vec++; vec_seek = 0; } } while (len); *pvec = vec; *pvec_seek = vec_seek; |
1da177e4c Linux-2.6.12-rc2 |
1743 1744 1745 1746 |
/* GO GO GO */ map_write(map, CMD(0xd0), cmd_adr); chip->state = FL_WRITING; |
c172471b7 cfi_cmdset_0001: ... |
1747 |
ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, |
646fd1278 cache invalidatio... |
1748 |
initial_adr, initial_len, |
e93cafe45 [MTD] [NOR] cfi_c... |
1749 1750 |
chip->buffer_write_time, chip->buffer_write_time_max); |
c172471b7 cfi_cmdset_0001: ... |
1751 1752 1753 1754 1755 1756 1757 |
if (ret) { map_write(map, CMD(0x70), cmd_adr); chip->state = FL_STATUS; xip_enable(map, chip, cmd_adr); printk(KERN_ERR "%s: buffer write error (status timeout) ", map->name); goto out; |
1da177e4c Linux-2.6.12-rc2 |
1758 |
} |
1da177e4c Linux-2.6.12-rc2 |
1759 |
|
4843653ca [MTD] cleanups to... |
1760 |
/* check for errors */ |
c172471b7 cfi_cmdset_0001: ... |
1761 |
status = map_read(map, cmd_adr); |
4843653ca [MTD] cleanups to... |
1762 1763 1764 1765 |
if (map_word_bitsset(map, status, CMD(0x1a))) { unsigned long chipstatus = MERGESTATUS(status); /* reset status */ |
1da177e4c Linux-2.6.12-rc2 |
1766 |
map_write(map, CMD(0x50), cmd_adr); |
4843653ca [MTD] cleanups to... |
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 |
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) ", map->name); ret = -EIO; } else { printk(KERN_ERR "%s: buffer write error (status 0x%lx) ", map->name, chipstatus); ret = -EINVAL; } goto out; |
1da177e4c Linux-2.6.12-rc2 |
1783 1784 1785 1786 |
} xip_enable(map, chip, cmd_adr); out: put_chip(map, chip, cmd_adr); |
c4e773764 mtd: fix a huge l... |
1787 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1788 1789 |
return ret; } |
e102d54ab [MTD] writev supp... |
1790 1791 |
static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen) |
1da177e4c Linux-2.6.12-rc2 |
1792 1793 1794 1795 1796 1797 |
{ 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; |
e102d54ab [MTD] writev supp... |
1798 1799 1800 1801 1802 |
unsigned long ofs, vec_seek, i; size_t len = 0; for (i = 0; i < count; i++) len += vecs[i].iov_len; |
1da177e4c Linux-2.6.12-rc2 |
1803 1804 1805 1806 1807 1808 |
*retlen = 0; if (!len) return 0; chipnum = to >> cfi->chipshift; |
e102d54ab [MTD] writev supp... |
1809 1810 |
ofs = to - (chipnum << cfi->chipshift); vec_seek = 0; |
1da177e4c Linux-2.6.12-rc2 |
1811 |
|
e102d54ab [MTD] writev supp... |
1812 |
do { |
1da177e4c Linux-2.6.12-rc2 |
1813 1814 1815 1816 1817 |
/* We must not cross write block boundaries */ int size = wbufsize - (ofs & (wbufsize-1)); if (size > len) size = len; |
1f948b43f [MTD] chips: Clea... |
1818 |
ret = do_write_buffer(map, &cfi->chips[chipnum], |
e102d54ab [MTD] writev supp... |
1819 |
ofs, &vecs, &vec_seek, size); |
1da177e4c Linux-2.6.12-rc2 |
1820 1821 1822 1823 |
if (ret) return ret; ofs += size; |
1da177e4c Linux-2.6.12-rc2 |
1824 1825 1826 1827 |
(*retlen) += size; len -= size; if (ofs >> cfi->chipshift) { |
1f948b43f [MTD] chips: Clea... |
1828 |
chipnum ++; |
1da177e4c Linux-2.6.12-rc2 |
1829 1830 1831 1832 |
ofs = 0; if (chipnum == cfi->numchips) return 0; } |
df54b52c4 CHIPS: Fix potent... |
1833 1834 1835 1836 |
/* Be nice and reschedule with the chip in a usable state for other processes. */ cond_resched(); |
e102d54ab [MTD] writev supp... |
1837 |
} while (len); |
1da177e4c Linux-2.6.12-rc2 |
1838 1839 |
return 0; } |
e102d54ab [MTD] writev supp... |
1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 |
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); } |
1da177e4c Linux-2.6.12-rc2 |
1850 1851 1852 1853 |
static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; |
c172471b7 cfi_cmdset_0001: ... |
1854 |
map_word status; |
1da177e4c Linux-2.6.12-rc2 |
1855 |
int retries = 3; |
c172471b7 cfi_cmdset_0001: ... |
1856 |
int ret; |
1da177e4c Linux-2.6.12-rc2 |
1857 1858 |
adr += chip->start; |
1da177e4c Linux-2.6.12-rc2 |
1859 |
retry: |
c4e773764 mtd: fix a huge l... |
1860 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1861 1862 |
ret = get_chip(map, chip, adr, FL_ERASING); if (ret) { |
c4e773764 mtd: fix a huge l... |
1863 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 |
return ret; } XIP_INVAL_CACHED_RANGE(map, adr, len); ENABLE_VPP(map); xip_disable(map, chip, adr); /* Clear the status register first */ map_write(map, CMD(0x50), adr); /* Now erase */ map_write(map, CMD(0x20), adr); map_write(map, CMD(0xD0), adr); chip->state = FL_ERASING; chip->erase_suspended = 0; |
c172471b7 cfi_cmdset_0001: ... |
1879 1880 |
ret = INVAL_CACHE_AND_WAIT(map, chip, adr, adr, len, |
e93cafe45 [MTD] [NOR] cfi_c... |
1881 1882 |
chip->erase_time, chip->erase_time_max); |
c172471b7 cfi_cmdset_0001: ... |
1883 1884 1885 1886 1887 1888 1889 |
if (ret) { map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; xip_enable(map, chip, adr); printk(KERN_ERR "%s: block erase error: (status timeout) ", map->name); goto out; |
1da177e4c Linux-2.6.12-rc2 |
1890 1891 1892 1893 1894 1895 |
} /* We've broken this before. It doesn't hurt to be safe */ map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; status = map_read(map, adr); |
4843653ca [MTD] cleanups to... |
1896 |
/* check for errors */ |
1da177e4c Linux-2.6.12-rc2 |
1897 |
if (map_word_bitsset(map, status, CMD(0x3a))) { |
4843653ca [MTD] cleanups to... |
1898 |
unsigned long chipstatus = MERGESTATUS(status); |
1da177e4c Linux-2.6.12-rc2 |
1899 1900 1901 1902 1903 |
/* Reset the error bits */ map_write(map, CMD(0x50), adr); map_write(map, CMD(0x70), adr); xip_enable(map, chip, adr); |
1da177e4c Linux-2.6.12-rc2 |
1904 |
if ((chipstatus & 0x30) == 0x30) { |
4843653ca [MTD] cleanups to... |
1905 1906 1907 |
printk(KERN_ERR "%s: block erase error: (bad command sequence, status 0x%lx) ", map->name, chipstatus); ret = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1908 1909 1910 1911 1912 |
} else if (chipstatus & 0x02) { /* Protection bit set */ ret = -EROFS; } else if (chipstatus & 0x8) { /* Voltage */ |
4843653ca [MTD] cleanups to... |
1913 1914 |
printk(KERN_ERR "%s: block erase error: (bad VPP) ", map->name); |
1da177e4c Linux-2.6.12-rc2 |
1915 |
ret = -EIO; |
4843653ca [MTD] cleanups to... |
1916 1917 1918 |
} else if (chipstatus & 0x20 && retries--) { printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying... ", adr, chipstatus); |
4843653ca [MTD] cleanups to... |
1919 |
put_chip(map, chip, adr); |
c4e773764 mtd: fix a huge l... |
1920 |
mutex_unlock(&chip->mutex); |
4843653ca [MTD] cleanups to... |
1921 1922 1923 1924 |
goto retry; } else { printk(KERN_ERR "%s: block erase failed at 0x%08lx (status 0x%lx) ", map->name, adr, chipstatus); |
1da177e4c Linux-2.6.12-rc2 |
1925 1926 |
ret = -EIO; } |
4843653ca [MTD] cleanups to... |
1927 1928 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1929 |
} |
4843653ca [MTD] cleanups to... |
1930 |
xip_enable(map, chip, adr); |
1da177e4c Linux-2.6.12-rc2 |
1931 |
out: put_chip(map, chip, adr); |
c4e773764 mtd: fix a huge l... |
1932 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1933 1934 |
return ret; } |
029a9eb1f [MTD] [NOR] cfi_c... |
1935 |
static int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) |
1da177e4c Linux-2.6.12-rc2 |
1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 |
{ unsigned long ofs, len; int ret; ofs = instr->addr; len = instr->len; ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL); if (ret) return ret; instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); |
1f948b43f [MTD] chips: Clea... |
1949 |
|
1da177e4c Linux-2.6.12-rc2 |
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 |
return 0; } static void cfi_intelext_sync (struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; int i; struct flchip *chip; int ret = 0; for (i=0; !ret && i<cfi->numchips; i++) { chip = &cfi->chips[i]; |
c4e773764 mtd: fix a huge l... |
1963 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1964 1965 1966 1967 1968 |
ret = get_chip(map, chip, chip->start, FL_SYNCING); if (!ret) { chip->oldstate = chip->state; chip->state = FL_SYNCING; |
1f948b43f [MTD] chips: Clea... |
1969 |
/* No need to wake_up() on this state change - |
1da177e4c Linux-2.6.12-rc2 |
1970 1971 1972 1973 |
* as the whole point is that nobody can do anything * with the chip now anyway. */ } |
c4e773764 mtd: fix a huge l... |
1974 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1975 1976 1977 1978 1979 1980 |
} /* Unlock the chips again */ for (i--; i >=0; i--) { chip = &cfi->chips[i]; |
c4e773764 mtd: fix a huge l... |
1981 |
mutex_lock(&chip->mutex); |
1f948b43f [MTD] chips: Clea... |
1982 |
|
1da177e4c Linux-2.6.12-rc2 |
1983 1984 |
if (chip->state == FL_SYNCING) { chip->state = chip->oldstate; |
09c793354 [MTD] cfi_cmdset_... |
1985 |
chip->oldstate = FL_READY; |
1da177e4c Linux-2.6.12-rc2 |
1986 1987 |
wake_up(&chip->wq); } |
c4e773764 mtd: fix a huge l... |
1988 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
1989 1990 |
} } |
0ecbc81ad [MTD] [NOR] Suppo... |
1991 |
static int __xipram do_getlockstatus_oneblock(struct map_info *map, |
1da177e4c Linux-2.6.12-rc2 |
1992 1993 1994 1995 1996 1997 |
struct flchip *chip, unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; int status, ofs_factor = cfi->interleave * cfi->device_type; |
c25bb1f59 [MTD] CFI DEBUG_L... |
1998 |
adr += chip->start; |
1da177e4c Linux-2.6.12-rc2 |
1999 |
xip_disable(map, chip, adr+(2*ofs_factor)); |
c25bb1f59 [MTD] CFI DEBUG_L... |
2000 |
map_write(map, CMD(0x90), adr+(2*ofs_factor)); |
1da177e4c Linux-2.6.12-rc2 |
2001 2002 2003 |
chip->state = FL_JEDEC_QUERY; status = cfi_read_query(map, adr+(2*ofs_factor)); xip_enable(map, chip, 0); |
0ecbc81ad [MTD] [NOR] Suppo... |
2004 2005 2006 2007 2008 2009 2010 2011 2012 |
return status; } #ifdef DEBUG_LOCK_BITS static int __xipram do_printlockstatus_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { |
1da177e4c Linux-2.6.12-rc2 |
2013 2014 |
printk(KERN_DEBUG "block status register for 0x%08lx is %x ", |
0ecbc81ad [MTD] [NOR] Suppo... |
2015 |
adr, do_getlockstatus_oneblock(map, chip, adr, len, thunk)); |
1da177e4c Linux-2.6.12-rc2 |
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 |
return 0; } #endif #define DO_XXLOCK_ONEBLOCK_LOCK ((void *) 1) #define DO_XXLOCK_ONEBLOCK_UNLOCK ((void *) 2) static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip, unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; |
9a6e73ec4 [MTD] cfi_cmdset_... |
2027 |
struct cfi_pri_intelext *extp = cfi->cmdset_priv; |
c172471b7 cfi_cmdset_0001: ... |
2028 |
int udelay; |
1da177e4c Linux-2.6.12-rc2 |
2029 2030 2031 |
int ret; adr += chip->start; |
c4e773764 mtd: fix a huge l... |
2032 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2033 2034 |
ret = get_chip(map, chip, adr, FL_LOCKING); if (ret) { |
c4e773764 mtd: fix a huge l... |
2035 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2036 2037 2038 2039 2040 |
return ret; } ENABLE_VPP(map); xip_disable(map, chip, adr); |
1f948b43f [MTD] chips: Clea... |
2041 |
|
1da177e4c Linux-2.6.12-rc2 |
2042 2043 2044 2045 2046 2047 2048 2049 2050 |
map_write(map, CMD(0x60), adr); if (thunk == DO_XXLOCK_ONEBLOCK_LOCK) { map_write(map, CMD(0x01), adr); chip->state = FL_LOCKING; } else if (thunk == DO_XXLOCK_ONEBLOCK_UNLOCK) { map_write(map, CMD(0xD0), adr); chip->state = FL_UNLOCKING; } else BUG(); |
9a6e73ec4 [MTD] cfi_cmdset_... |
2051 2052 2053 2054 |
/* * If Instant Individual Block Locking supported then no need * to delay. */ |
c172471b7 cfi_cmdset_0001: ... |
2055 |
udelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1000000/HZ : 0; |
9a6e73ec4 [MTD] cfi_cmdset_... |
2056 |
|
e93cafe45 [MTD] [NOR] cfi_c... |
2057 |
ret = WAIT_TIMEOUT(map, chip, adr, udelay, udelay * 100); |
c172471b7 cfi_cmdset_0001: ... |
2058 2059 2060 2061 2062 2063 2064 |
if (ret) { map_write(map, CMD(0x70), adr); chip->state = FL_STATUS; xip_enable(map, chip, adr); printk(KERN_ERR "%s: block unlock error: (status timeout) ", map->name); goto out; |
1da177e4c Linux-2.6.12-rc2 |
2065 |
} |
1f948b43f [MTD] chips: Clea... |
2066 |
|
1da177e4c Linux-2.6.12-rc2 |
2067 |
xip_enable(map, chip, adr); |
c172471b7 cfi_cmdset_0001: ... |
2068 |
out: put_chip(map, chip, adr); |
c4e773764 mtd: fix a huge l... |
2069 |
mutex_unlock(&chip->mutex); |
c172471b7 cfi_cmdset_0001: ... |
2070 |
return ret; |
1da177e4c Linux-2.6.12-rc2 |
2071 |
} |
69423d99f [MTD] update inte... |
2072 |
static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
1da177e4c Linux-2.6.12-rc2 |
2073 2074 2075 2076 2077 2078 |
{ int ret; #ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X ", |
cb53b3b99 [MTD] replace rem... |
2079 |
__func__, ofs, len); |
1da177e4c Linux-2.6.12-rc2 |
2080 |
cfi_varsize_frob(mtd, do_printlockstatus_oneblock, |
1da1caf8d [MTD] [NOR] Use N... |
2081 |
ofs, len, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2082 |
#endif |
1f948b43f [MTD] chips: Clea... |
2083 |
ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, |
1da177e4c Linux-2.6.12-rc2 |
2084 |
ofs, len, DO_XXLOCK_ONEBLOCK_LOCK); |
1f948b43f [MTD] chips: Clea... |
2085 |
|
1da177e4c Linux-2.6.12-rc2 |
2086 2087 2088 |
#ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status after, ret=%d ", |
cb53b3b99 [MTD] replace rem... |
2089 |
__func__, ret); |
1da177e4c Linux-2.6.12-rc2 |
2090 |
cfi_varsize_frob(mtd, do_printlockstatus_oneblock, |
1da1caf8d [MTD] [NOR] Use N... |
2091 |
ofs, len, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2092 2093 2094 2095 |
#endif return ret; } |
69423d99f [MTD] update inte... |
2096 |
static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
1da177e4c Linux-2.6.12-rc2 |
2097 2098 2099 2100 2101 2102 |
{ int ret; #ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status before, ofs=0x%08llx, len=0x%08X ", |
cb53b3b99 [MTD] replace rem... |
2103 |
__func__, ofs, len); |
1da177e4c Linux-2.6.12-rc2 |
2104 |
cfi_varsize_frob(mtd, do_printlockstatus_oneblock, |
1da1caf8d [MTD] [NOR] Use N... |
2105 |
ofs, len, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2106 2107 2108 2109 |
#endif ret = cfi_varsize_frob(mtd, do_xxlock_oneblock, ofs, len, DO_XXLOCK_ONEBLOCK_UNLOCK); |
1f948b43f [MTD] chips: Clea... |
2110 |
|
1da177e4c Linux-2.6.12-rc2 |
2111 2112 2113 |
#ifdef DEBUG_LOCK_BITS printk(KERN_DEBUG "%s: lock status after, ret=%d ", |
cb53b3b99 [MTD] replace rem... |
2114 |
__func__, ret); |
1f948b43f [MTD] chips: Clea... |
2115 |
cfi_varsize_frob(mtd, do_printlockstatus_oneblock, |
1da1caf8d [MTD] [NOR] Use N... |
2116 |
ofs, len, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2117 |
#endif |
1f948b43f [MTD] chips: Clea... |
2118 |
|
1da177e4c Linux-2.6.12-rc2 |
2119 2120 |
return ret; } |
9938424f0 mtd: add an ioctl... |
2121 2122 2123 2124 2125 2126 |
static int cfi_intelext_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) { return cfi_varsize_frob(mtd, do_getlockstatus_oneblock, ofs, len, NULL) ? 1 : 0; } |
f77814dd5 [MTD] Support for... |
2127 |
#ifdef CONFIG_MTD_OTP |
1f948b43f [MTD] chips: Clea... |
2128 |
typedef int (*otp_op_t)(struct map_info *map, struct flchip *chip, |
f77814dd5 [MTD] Support for... |
2129 2130 2131 2132 2133 2134 2135 2136 2137 |
u_long data_offset, u_char *buf, u_int size, u_long prot_offset, u_int groupno, u_int groupsize); static int __xipram do_otp_read(struct map_info *map, struct flchip *chip, u_long offset, u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz) { struct cfi_private *cfi = map->fldrv_priv; int ret; |
c4e773764 mtd: fix a huge l... |
2138 |
mutex_lock(&chip->mutex); |
f77814dd5 [MTD] Support for... |
2139 2140 |
ret = get_chip(map, chip, chip->start, FL_JEDEC_QUERY); if (ret) { |
c4e773764 mtd: fix a huge l... |
2141 |
mutex_unlock(&chip->mutex); |
f77814dd5 [MTD] Support for... |
2142 2143 2144 2145 |
return ret; } /* let's ensure we're not reading back cached data from array mode */ |
6da70124a [MTD] CFI flash l... |
2146 |
INVALIDATE_CACHED_RANGE(map, chip->start + offset, size); |
f77814dd5 [MTD] Support for... |
2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 |
xip_disable(map, chip, chip->start); if (chip->state != FL_JEDEC_QUERY) { map_write(map, CMD(0x90), chip->start); chip->state = FL_JEDEC_QUERY; } map_copy_from(map, buf, chip->start + offset, size); xip_enable(map, chip, chip->start); /* then ensure we don't keep OTP data in the cache */ |
6da70124a [MTD] CFI flash l... |
2157 |
INVALIDATE_CACHED_RANGE(map, chip->start + offset, size); |
f77814dd5 [MTD] Support for... |
2158 2159 |
put_chip(map, chip, chip->start); |
c4e773764 mtd: fix a huge l... |
2160 |
mutex_unlock(&chip->mutex); |
f77814dd5 [MTD] Support for... |
2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 |
return 0; } static int do_otp_write(struct map_info *map, struct flchip *chip, u_long offset, u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz) { int ret; while (size) { unsigned long bus_ofs = offset & ~(map_bankwidth(map)-1); int gap = offset - bus_ofs; int n = min_t(int, size, map_bankwidth(map)-gap); map_word datum = map_word_ff(map); datum = map_word_load_partial(map, datum, buf, gap, n); ret = do_write_oneword(map, chip, bus_ofs, datum, FL_OTP_WRITE); |
1f948b43f [MTD] chips: Clea... |
2178 |
if (ret) |
f77814dd5 [MTD] Support for... |
2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 |
return ret; offset += n; buf += n; size -= n; } return 0; } static int do_otp_lock(struct map_info *map, struct flchip *chip, u_long offset, u_char *buf, u_int size, u_long prot, u_int grpno, u_int grpsz) { struct cfi_private *cfi = map->fldrv_priv; map_word datum; /* make sure area matches group boundaries */ |
332d71f76 [MTD] Make OTP ac... |
2197 |
if (size != grpsz) |
f77814dd5 [MTD] Support for... |
2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 |
return -EXDEV; datum = map_word_ff(map); datum = map_word_clr(map, datum, CMD(1 << grpno)); return do_write_oneword(map, chip, prot, datum, FL_OTP_WRITE); } static int cfi_intelext_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, otp_op_t action, int user_regs) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; struct cfi_pri_intelext *extp = cfi->cmdset_priv; struct flchip *chip; struct cfi_intelext_otpinfo *otp; u_long devsize, reg_prot_offset, data_offset; u_int chip_num, chip_step, field, reg_fact_size, reg_user_size; u_int groups, groupno, groupsize, reg_fact_groups, reg_user_groups; int ret; *retlen = 0; /* Check that we actually have some OTP registers */ if (!extp || !(extp->FeatureSupport & 64) || !extp->NumProtectionFields) return -ENODATA; /* we need real chips here not virtual ones */ devsize = (1 << cfi->cfiq->DevSize) * cfi->interleave; chip_step = devsize >> cfi->chipshift; |
dce2b4da6 [MTD] Fix OTP for... |
2228 2229 2230 2231 |
chip_num = 0; /* Some chips have OTP located in the _top_ partition only. For example: Intel 28F256L18T (T means top-parameter device) */ |
b2ef1a2bb mtd: move manufac... |
2232 |
if (cfi->mfr == CFI_MFR_INTEL) { |
dce2b4da6 [MTD] Fix OTP for... |
2233 2234 2235 2236 2237 2238 2239 |
switch (cfi->id) { case 0x880b: case 0x880c: case 0x880d: chip_num = chip_step - 1; } } |
f77814dd5 [MTD] Support for... |
2240 |
|
dce2b4da6 [MTD] Fix OTP for... |
2241 |
for ( ; chip_num < cfi->numchips; chip_num += chip_step) { |
f77814dd5 [MTD] Support for... |
2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 |
chip = &cfi->chips[chip_num]; otp = (struct cfi_intelext_otpinfo *)&extp->extra[0]; /* first OTP region */ field = 0; reg_prot_offset = extp->ProtRegAddr; reg_fact_groups = 1; reg_fact_size = 1 << extp->FactProtRegSize; reg_user_groups = 1; reg_user_size = 1 << extp->UserProtRegSize; while (len > 0) { /* flash geometry fixup */ data_offset = reg_prot_offset + 1; data_offset *= cfi->interleave * cfi->device_type; reg_prot_offset *= cfi->interleave * cfi->device_type; reg_fact_size *= cfi->interleave; reg_user_size *= cfi->interleave; if (user_regs) { groups = reg_user_groups; groupsize = reg_user_size; /* skip over factory reg area */ groupno = reg_fact_groups; data_offset += reg_fact_groups * reg_fact_size; } else { groups = reg_fact_groups; groupsize = reg_fact_size; groupno = 0; } |
332d71f76 [MTD] Make OTP ac... |
2272 |
while (len > 0 && groups > 0) { |
f77814dd5 [MTD] Support for... |
2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 |
if (!action) { /* * Special case: if action is NULL * we fill buf with otp_info records. */ struct otp_info *otpinfo; map_word lockword; len -= sizeof(struct otp_info); if (len <= 0) return -ENOSPC; ret = do_otp_read(map, chip, reg_prot_offset, (u_char *)&lockword, map_bankwidth(map), 0, 0, 0); if (ret) return ret; otpinfo = (struct otp_info *)buf; otpinfo->start = from; otpinfo->length = groupsize; otpinfo->locked = !map_word_bitsset(map, lockword, CMD(1 << groupno)); from += groupsize; buf += sizeof(*otpinfo); *retlen += sizeof(*otpinfo); } else if (from >= groupsize) { from -= groupsize; |
332d71f76 [MTD] Make OTP ac... |
2301 |
data_offset += groupsize; |
f77814dd5 [MTD] Support for... |
2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 |
} else { int size = groupsize; data_offset += from; size -= from; from = 0; if (size > len) size = len; ret = action(map, chip, data_offset, buf, size, reg_prot_offset, groupno, groupsize); if (ret < 0) return ret; buf += size; len -= size; *retlen += size; |
332d71f76 [MTD] Make OTP ac... |
2317 |
data_offset += size; |
f77814dd5 [MTD] Support for... |
2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 |
} groupno++; groups--; } /* next OTP region */ if (++field == extp->NumProtectionFields) break; reg_prot_offset = otp->ProtRegAddr; reg_fact_groups = otp->FactGroups; reg_fact_size = 1 << otp->FactProtRegSize; reg_user_groups = otp->UserGroups; reg_user_size = 1 << otp->UserProtRegSize; otp++; } } return 0; } static int cfi_intelext_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { return cfi_intelext_otp_walk(mtd, from, len, retlen, buf, do_otp_read, 0); } static int cfi_intelext_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { return cfi_intelext_otp_walk(mtd, from, len, retlen, buf, do_otp_read, 1); } static int cfi_intelext_write_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { return cfi_intelext_otp_walk(mtd, from, len, retlen, buf, do_otp_write, 1); } static int cfi_intelext_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len) { size_t retlen; return cfi_intelext_otp_walk(mtd, from, len, &retlen, NULL, do_otp_lock, 1); } |
1f948b43f [MTD] chips: Clea... |
2369 |
static int cfi_intelext_get_fact_prot_info(struct mtd_info *mtd, |
f77814dd5 [MTD] Support for... |
2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 |
struct otp_info *buf, size_t len) { size_t retlen; int ret; ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 0); return ret ? : retlen; } static int cfi_intelext_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf, size_t len) { size_t retlen; int ret; ret = cfi_intelext_otp_walk(mtd, 0, len, &retlen, (u_char *)buf, NULL, 1); return ret ? : retlen; } #endif |
0ecbc81ad [MTD] [NOR] Suppo... |
2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 |
static void cfi_intelext_save_locks(struct mtd_info *mtd) { struct mtd_erase_region_info *region; int block, status, i; unsigned long adr; size_t len; for (i = 0; i < mtd->numeraseregions; i++) { region = &mtd->eraseregions[i]; if (!region->lockmap) continue; for (block = 0; block < region->numblocks; block++){ len = region->erasesize; adr = region->offset + block * len; status = cfi_varsize_frob(mtd, |
029a9eb1f [MTD] [NOR] cfi_c... |
2407 |
do_getlockstatus_oneblock, adr, len, NULL); |
0ecbc81ad [MTD] [NOR] Suppo... |
2408 2409 2410 2411 2412 2413 2414 |
if (status) set_bit(block, region->lockmap); else clear_bit(block, region->lockmap); } } } |
1da177e4c Linux-2.6.12-rc2 |
2415 2416 2417 2418 |
static int cfi_intelext_suspend(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
0ecbc81ad [MTD] [NOR] Suppo... |
2419 |
struct cfi_pri_intelext *extp = cfi->cmdset_priv; |
1da177e4c Linux-2.6.12-rc2 |
2420 2421 2422 |
int i; struct flchip *chip; int ret = 0; |
e619a75ff [MTD] Unlocking a... |
2423 |
if ((mtd->flags & MTD_POWERUP_LOCK) |
0ecbc81ad [MTD] [NOR] Suppo... |
2424 2425 |
&& extp && (extp->FeatureSupport & (1 << 5))) cfi_intelext_save_locks(mtd); |
1da177e4c Linux-2.6.12-rc2 |
2426 2427 |
for (i=0; !ret && i<cfi->numchips; i++) { chip = &cfi->chips[i]; |
c4e773764 mtd: fix a huge l... |
2428 |
mutex_lock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2429 2430 2431 2432 2433 2434 2435 |
switch (chip->state) { case FL_READY: case FL_STATUS: case FL_CFI_QUERY: case FL_JEDEC_QUERY: if (chip->oldstate == FL_READY) { |
a86aaa6dd [MTD] NOR: leave ... |
2436 2437 |
/* place the chip in a known state before suspend */ map_write(map, CMD(0xFF), cfi->chips[i].start); |
1da177e4c Linux-2.6.12-rc2 |
2438 2439 |
chip->oldstate = chip->state; chip->state = FL_PM_SUSPENDED; |
1f948b43f [MTD] chips: Clea... |
2440 |
/* No need to wake_up() on this state change - |
1da177e4c Linux-2.6.12-rc2 |
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 |
* as the whole point is that nobody can do anything * with the chip now anyway. */ } else { /* There seems to be an operation pending. We must wait for it. */ printk(KERN_NOTICE "Flash device refused suspend due to pending operation (oldstate %d) ", chip->oldstate); ret = -EAGAIN; } break; default: /* Should we actually wait? Once upon a time these routines weren't allowed to. Or should we return -EAGAIN, because the upper layers ought to have already shut down anything which was using the device anyway? The latter for now. */ printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d) ", chip->oldstate); ret = -EAGAIN; case FL_PM_SUSPENDED: break; } |
c4e773764 mtd: fix a huge l... |
2462 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2463 2464 2465 2466 2467 2468 2469 |
} /* Unlock the chips again */ if (ret) { for (i--; i >=0; i--) { chip = &cfi->chips[i]; |
1f948b43f [MTD] chips: Clea... |
2470 |
|
c4e773764 mtd: fix a huge l... |
2471 |
mutex_lock(&chip->mutex); |
1f948b43f [MTD] chips: Clea... |
2472 |
|
1da177e4c Linux-2.6.12-rc2 |
2473 2474 2475 2476 2477 2478 2479 2480 |
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 get power cycled */ chip->state = chip->oldstate; chip->oldstate = FL_READY; wake_up(&chip->wq); } |
c4e773764 mtd: fix a huge l... |
2481 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2482 |
} |
1f948b43f [MTD] chips: Clea... |
2483 |
} |
1da177e4c Linux-2.6.12-rc2 |
2484 2485 |
return ret; } |
0ecbc81ad [MTD] [NOR] Suppo... |
2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 |
static void cfi_intelext_restore_locks(struct mtd_info *mtd) { struct mtd_erase_region_info *region; int block, i; unsigned long adr; size_t len; for (i = 0; i < mtd->numeraseregions; i++) { region = &mtd->eraseregions[i]; if (!region->lockmap) continue; for (block = 0; block < region->numblocks; block++) { len = region->erasesize; adr = region->offset + block * len; if (!test_bit(block, region->lockmap)) cfi_intelext_unlock(mtd, adr, len); } } } |
1da177e4c Linux-2.6.12-rc2 |
2507 2508 2509 2510 |
static void cfi_intelext_resume(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
0ecbc81ad [MTD] [NOR] Suppo... |
2511 |
struct cfi_pri_intelext *extp = cfi->cmdset_priv; |
1da177e4c Linux-2.6.12-rc2 |
2512 2513 2514 2515 |
int i; struct flchip *chip; for (i=0; i<cfi->numchips; i++) { |
1f948b43f [MTD] chips: Clea... |
2516 |
|
1da177e4c Linux-2.6.12-rc2 |
2517 |
chip = &cfi->chips[i]; |
c4e773764 mtd: fix a huge l... |
2518 |
mutex_lock(&chip->mutex); |
1f948b43f [MTD] chips: Clea... |
2519 |
|
1da177e4c Linux-2.6.12-rc2 |
2520 2521 2522 2523 2524 2525 |
/* 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); chip->oldstate = chip->state = FL_READY; wake_up(&chip->wq); } |
c4e773764 mtd: fix a huge l... |
2526 |
mutex_unlock(&chip->mutex); |
1da177e4c Linux-2.6.12-rc2 |
2527 |
} |
0ecbc81ad [MTD] [NOR] Suppo... |
2528 |
|
e619a75ff [MTD] Unlocking a... |
2529 |
if ((mtd->flags & MTD_POWERUP_LOCK) |
0ecbc81ad [MTD] [NOR] Suppo... |
2530 2531 |
&& extp && (extp->FeatureSupport & (1 << 5))) cfi_intelext_restore_locks(mtd); |
1da177e4c Linux-2.6.12-rc2 |
2532 |
} |
963a6fb0a [MTD] Add reboot ... |
2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 |
static int cfi_intelext_reset(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; int i, ret; for (i=0; i < cfi->numchips; i++) { struct flchip *chip = &cfi->chips[i]; /* force the completion of any ongoing operation |
1f948b43f [MTD] chips: Clea... |
2543 |
and switch to array mode so any bootloader in |
963a6fb0a [MTD] Add reboot ... |
2544 |
flash is accessible for soft reboot. */ |
c4e773764 mtd: fix a huge l... |
2545 |
mutex_lock(&chip->mutex); |
c4a9f88da [MTD] [NOR] fix c... |
2546 |
ret = get_chip(map, chip, chip->start, FL_SHUTDOWN); |
963a6fb0a [MTD] Add reboot ... |
2547 2548 |
if (!ret) { map_write(map, CMD(0xff), chip->start); |
c4a9f88da [MTD] [NOR] fix c... |
2549 |
chip->state = FL_SHUTDOWN; |
c9f7ec308 mtd: add missing ... |
2550 |
put_chip(map, chip, chip->start); |
963a6fb0a [MTD] Add reboot ... |
2551 |
} |
c4e773764 mtd: fix a huge l... |
2552 |
mutex_unlock(&chip->mutex); |
963a6fb0a [MTD] Add reboot ... |
2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 |
} return 0; } static int cfi_intelext_reboot(struct notifier_block *nb, unsigned long val, void *v) { struct mtd_info *mtd; mtd = container_of(nb, struct mtd_info, reboot_notifier); cfi_intelext_reset(mtd); return NOTIFY_DONE; } |
1da177e4c Linux-2.6.12-rc2 |
2567 2568 2569 2570 |
static void cfi_intelext_destroy(struct mtd_info *mtd) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; |
0ecbc81ad [MTD] [NOR] Suppo... |
2571 2572 |
struct mtd_erase_region_info *region; int i; |
963a6fb0a [MTD] Add reboot ... |
2573 2574 |
cfi_intelext_reset(mtd); unregister_reboot_notifier(&mtd->reboot_notifier); |
1da177e4c Linux-2.6.12-rc2 |
2575 2576 2577 2578 |
kfree(cfi->cmdset_priv); kfree(cfi->cfiq); kfree(cfi->chips[0].priv); kfree(cfi); |
0ecbc81ad [MTD] [NOR] Suppo... |
2579 2580 2581 2582 2583 |
for (i = 0; i < mtd->numeraseregions; i++) { region = &mtd->eraseregions[i]; if (region->lockmap) kfree(region->lockmap); } |
1da177e4c Linux-2.6.12-rc2 |
2584 2585 |
kfree(mtd->eraseregions); } |
1da177e4c Linux-2.6.12-rc2 |
2586 2587 2588 |
MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org> et al."); MODULE_DESCRIPTION("MTD chip driver for Intel/Sharp flash chips"); |
a15bdeef1 Remove use of int... |
2589 2590 |
MODULE_ALIAS("cfi_cmdset_0003"); MODULE_ALIAS("cfi_cmdset_0200"); |