diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/mtd/cfi.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/mtd/cfi.h | 564 |
1 files changed, 0 insertions, 564 deletions
diff --git a/ANDROID_3.4.5/include/linux/mtd/cfi.h b/ANDROID_3.4.5/include/linux/mtd/cfi.h deleted file mode 100644 index 37ef6b19..00000000 --- a/ANDROID_3.4.5/include/linux/mtd/cfi.h +++ /dev/null @@ -1,564 +0,0 @@ -/* - * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org> et al. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#ifndef __MTD_CFI_H__ -#define __MTD_CFI_H__ - -#include <linux/delay.h> -#include <linux/types.h> -#include <linux/bug.h> -#include <linux/interrupt.h> -#include <linux/mtd/flashchip.h> -#include <linux/mtd/map.h> -#include <linux/mtd/cfi_endian.h> -#include <linux/mtd/xip.h> - -#ifdef CONFIG_MTD_CFI_I1 -#define cfi_interleave(cfi) 1 -#define cfi_interleave_is_1(cfi) (cfi_interleave(cfi) == 1) -#else -#define cfi_interleave_is_1(cfi) (0) -#endif - -#ifdef CONFIG_MTD_CFI_I2 -# ifdef cfi_interleave -# undef cfi_interleave -# define cfi_interleave(cfi) ((cfi)->interleave) -# else -# define cfi_interleave(cfi) 2 -# endif -#define cfi_interleave_is_2(cfi) (cfi_interleave(cfi) == 2) -#else -#define cfi_interleave_is_2(cfi) (0) -#endif - -#ifdef CONFIG_MTD_CFI_I4 -# ifdef cfi_interleave -# undef cfi_interleave -# define cfi_interleave(cfi) ((cfi)->interleave) -# else -# define cfi_interleave(cfi) 4 -# endif -#define cfi_interleave_is_4(cfi) (cfi_interleave(cfi) == 4) -#else -#define cfi_interleave_is_4(cfi) (0) -#endif - -#ifdef CONFIG_MTD_CFI_I8 -# ifdef cfi_interleave -# undef cfi_interleave -# define cfi_interleave(cfi) ((cfi)->interleave) -# else -# define cfi_interleave(cfi) 8 -# endif -#define cfi_interleave_is_8(cfi) (cfi_interleave(cfi) == 8) -#else -#define cfi_interleave_is_8(cfi) (0) -#endif - -#ifndef cfi_interleave -#warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. -static inline int cfi_interleave(void *cfi) -{ - BUG(); - return 0; -} -#endif - -static inline int cfi_interleave_supported(int i) -{ - switch (i) { -#ifdef CONFIG_MTD_CFI_I1 - case 1: -#endif -#ifdef CONFIG_MTD_CFI_I2 - case 2: -#endif -#ifdef CONFIG_MTD_CFI_I4 - case 4: -#endif -#ifdef CONFIG_MTD_CFI_I8 - case 8: -#endif - return 1; - - default: - return 0; - } -} - - -/* NB: these values must represents the number of bytes needed to meet the - * device type (x8, x16, x32). Eg. a 32 bit device is 4 x 8 bytes. - * These numbers are used in calculations. - */ -#define CFI_DEVICETYPE_X8 (8 / 8) -#define CFI_DEVICETYPE_X16 (16 / 8) -#define CFI_DEVICETYPE_X32 (32 / 8) -#define CFI_DEVICETYPE_X64 (64 / 8) - - -/* Device Interface Code Assignments from the "Common Flash Memory Interface - * Publication 100" dated December 1, 2001. - */ -#define CFI_INTERFACE_X8_ASYNC 0x0000 -#define CFI_INTERFACE_X16_ASYNC 0x0001 -#define CFI_INTERFACE_X8_BY_X16_ASYNC 0x0002 -#define CFI_INTERFACE_X32_ASYNC 0x0003 -#define CFI_INTERFACE_X16_BY_X32_ASYNC 0x0005 -#define CFI_INTERFACE_NOT_ALLOWED 0xffff - - -/* NB: We keep these structures in memory in HOST byteorder, except - * where individually noted. - */ - -/* Basic Query Structure */ -struct cfi_ident { - uint8_t qry[3]; - uint16_t P_ID; - uint16_t P_ADR; - uint16_t A_ID; - uint16_t A_ADR; - uint8_t VccMin; - uint8_t VccMax; - uint8_t VppMin; - uint8_t VppMax; - uint8_t WordWriteTimeoutTyp; - uint8_t BufWriteTimeoutTyp; - uint8_t BlockEraseTimeoutTyp; - uint8_t ChipEraseTimeoutTyp; - uint8_t WordWriteTimeoutMax; - uint8_t BufWriteTimeoutMax; - uint8_t BlockEraseTimeoutMax; - uint8_t ChipEraseTimeoutMax; - uint8_t DevSize; - uint16_t InterfaceDesc; - uint16_t MaxBufWriteSize; - uint8_t NumEraseRegions; - uint32_t EraseRegionInfo[0]; /* Not host ordered */ -} __attribute__((packed)); - -/* Extended Query Structure for both PRI and ALT */ - -struct cfi_extquery { - uint8_t pri[3]; - uint8_t MajorVersion; - uint8_t MinorVersion; -} __attribute__((packed)); - -/* Vendor-Specific PRI for Intel/Sharp Extended Command Set (0x0001) */ - -struct cfi_pri_intelext { - uint8_t pri[3]; - uint8_t MajorVersion; - uint8_t MinorVersion; - uint32_t FeatureSupport; /* if bit 31 is set then an additional uint32_t feature - block follows - FIXME - not currently supported */ - uint8_t SuspendCmdSupport; - uint16_t BlkStatusRegMask; - uint8_t VccOptimal; - uint8_t VppOptimal; - uint8_t NumProtectionFields; - uint16_t ProtRegAddr; - uint8_t FactProtRegSize; - uint8_t UserProtRegSize; - uint8_t extra[0]; -} __attribute__((packed)); - -struct cfi_intelext_otpinfo { - uint32_t ProtRegAddr; - uint16_t FactGroups; - uint8_t FactProtRegSize; - uint16_t UserGroups; - uint8_t UserProtRegSize; -} __attribute__((packed)); - -struct cfi_intelext_blockinfo { - uint16_t NumIdentBlocks; - uint16_t BlockSize; - uint16_t MinBlockEraseCycles; - uint8_t BitsPerCell; - uint8_t BlockCap; -} __attribute__((packed)); - -struct cfi_intelext_regioninfo { - uint16_t NumIdentPartitions; - uint8_t NumOpAllowed; - uint8_t NumOpAllowedSimProgMode; - uint8_t NumOpAllowedSimEraMode; - uint8_t NumBlockTypes; - struct cfi_intelext_blockinfo BlockTypes[1]; -} __attribute__((packed)); - -struct cfi_intelext_programming_regioninfo { - uint8_t ProgRegShift; - uint8_t Reserved1; - uint8_t ControlValid; - uint8_t Reserved2; - uint8_t ControlInvalid; - uint8_t Reserved3; -} __attribute__((packed)); - -/* Vendor-Specific PRI for AMD/Fujitsu Extended Command Set (0x0002) */ - -struct cfi_pri_amdstd { - uint8_t pri[3]; - uint8_t MajorVersion; - uint8_t MinorVersion; - uint8_t SiliconRevision; /* bits 1-0: Address Sensitive Unlock */ - uint8_t EraseSuspend; - uint8_t BlkProt; - uint8_t TmpBlkUnprotect; - uint8_t BlkProtUnprot; - uint8_t SimultaneousOps; - uint8_t BurstMode; - uint8_t PageMode; - uint8_t VppMin; - uint8_t VppMax; - uint8_t TopBottom; -} __attribute__((packed)); - -/* Vendor-Specific PRI for Atmel chips (command set 0x0002) */ - -struct cfi_pri_atmel { - uint8_t pri[3]; - uint8_t MajorVersion; - uint8_t MinorVersion; - uint8_t Features; - uint8_t BottomBoot; - uint8_t BurstMode; - uint8_t PageMode; -} __attribute__((packed)); - -struct cfi_pri_query { - uint8_t NumFields; - uint32_t ProtField[1]; /* Not host ordered */ -} __attribute__((packed)); - -struct cfi_bri_query { - uint8_t PageModeReadCap; - uint8_t NumFields; - uint32_t ConfField[1]; /* Not host ordered */ -} __attribute__((packed)); - -#define P_ID_NONE 0x0000 -#define P_ID_INTEL_EXT 0x0001 -#define P_ID_AMD_STD 0x0002 -#define P_ID_INTEL_STD 0x0003 -#define P_ID_AMD_EXT 0x0004 -#define P_ID_WINBOND 0x0006 -#define P_ID_ST_ADV 0x0020 -#define P_ID_MITSUBISHI_STD 0x0100 -#define P_ID_MITSUBISHI_EXT 0x0101 -#define P_ID_SST_PAGE 0x0102 -#define P_ID_SST_OLD 0x0701 -#define P_ID_INTEL_PERFORMANCE 0x0200 -#define P_ID_INTEL_DATA 0x0210 -#define P_ID_RESERVED 0xffff - - -#define CFI_MODE_CFI 1 -#define CFI_MODE_JEDEC 0 - -struct cfi_private { - uint16_t cmdset; - void *cmdset_priv; - int interleave; - int device_type; - int cfi_mode; /* Are we a JEDEC device pretending to be CFI? */ - int addr_unlock1; - int addr_unlock2; - struct mtd_info *(*cmdset_setup)(struct map_info *); - struct cfi_ident *cfiq; /* For now only one. We insist that all devs - must be of the same type. */ - int mfr, id; - int numchips; - map_word sector_erase_cmd; - unsigned long chipshift; /* Because they're of the same type */ - const char *im_name; /* inter_module name for cmdset_setup */ - struct flchip chips[0]; /* per-chip data structure for each chip */ -}; - -/* - * Returns the command address according to the given geometry. - */ -static inline uint32_t cfi_build_cmd_addr(uint32_t cmd_ofs, - struct map_info *map, struct cfi_private *cfi) -{ - unsigned bankwidth = map_bankwidth(map); - unsigned interleave = cfi_interleave(cfi); - unsigned type = cfi->device_type; - uint32_t addr; - - addr = (cmd_ofs * type) * interleave; - - /* Modify the unlock address if we are in compatibility mode. - * For 16bit devices on 8 bit busses - * and 32bit devices on 16 bit busses - * set the low bit of the alternating bit sequence of the address. - */ - if (((type * interleave) > bankwidth) && ((cmd_ofs & 0xff) == 0xaa)) - addr |= (type >> 1)*interleave; - - return addr; -} - -/* - * Transforms the CFI command for the given geometry (bus width & interleave). - * It looks too long to be inline, but in the common case it should almost all - * get optimised away. - */ -static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cfi_private *cfi) -{ - map_word val = { {0} }; - int wordwidth, words_per_bus, chip_mode, chips_per_word; - unsigned long onecmd; - int i; - - /* We do it this way to give the compiler a fighting chance - of optimising away all the crap for 'bankwidth' larger than - an unsigned long, in the common case where that support is - disabled */ - if (map_bankwidth_is_large(map)) { - wordwidth = sizeof(unsigned long); - words_per_bus = (map_bankwidth(map)) / wordwidth; // i.e. normally 1 - } else { - wordwidth = map_bankwidth(map); - words_per_bus = 1; - } - - chip_mode = map_bankwidth(map) / cfi_interleave(cfi); - chips_per_word = wordwidth * cfi_interleave(cfi) / map_bankwidth(map); - - /* First, determine what the bit-pattern should be for a single - device, according to chip mode and endianness... */ - switch (chip_mode) { - default: BUG(); - case 1: - onecmd = cmd; - break; - case 2: - onecmd = cpu_to_cfi16(map, cmd); - break; - case 4: - onecmd = cpu_to_cfi32(map, cmd); - break; - } - - /* Now replicate it across the size of an unsigned long, or - just to the bus width as appropriate */ - switch (chips_per_word) { - default: BUG(); -#if BITS_PER_LONG >= 64 - case 8: - onecmd |= (onecmd << (chip_mode * 32)); -#endif - case 4: - onecmd |= (onecmd << (chip_mode * 16)); - case 2: - onecmd |= (onecmd << (chip_mode * 8)); - case 1: - ; - } - - /* And finally, for the multi-word case, replicate it - in all words in the structure */ - for (i=0; i < words_per_bus; i++) { - val.x[i] = onecmd; - } - - return val; -} -#define CMD(x) cfi_build_cmd((x), map, cfi) - - -static inline unsigned long cfi_merge_status(map_word val, struct map_info *map, - struct cfi_private *cfi) -{ - int wordwidth, words_per_bus, chip_mode, chips_per_word; - unsigned long onestat, res = 0; - int i; - - /* We do it this way to give the compiler a fighting chance - of optimising away all the crap for 'bankwidth' larger than - an unsigned long, in the common case where that support is - disabled */ - if (map_bankwidth_is_large(map)) { - wordwidth = sizeof(unsigned long); - words_per_bus = (map_bankwidth(map)) / wordwidth; // i.e. normally 1 - } else { - wordwidth = map_bankwidth(map); - words_per_bus = 1; - } - - chip_mode = map_bankwidth(map) / cfi_interleave(cfi); - chips_per_word = wordwidth * cfi_interleave(cfi) / map_bankwidth(map); - - onestat = val.x[0]; - /* Or all status words together */ - for (i=1; i < words_per_bus; i++) { - onestat |= val.x[i]; - } - - res = onestat; - switch(chips_per_word) { - default: BUG(); -#if BITS_PER_LONG >= 64 - case 8: - res |= (onestat >> (chip_mode * 32)); -#endif - case 4: - res |= (onestat >> (chip_mode * 16)); - case 2: - res |= (onestat >> (chip_mode * 8)); - case 1: - ; - } - - /* Last, determine what the bit-pattern should be for a single - device, according to chip mode and endianness... */ - switch (chip_mode) { - case 1: - break; - case 2: - res = cfi16_to_cpu(map, res); - break; - case 4: - res = cfi32_to_cpu(map, res); - break; - default: BUG(); - } - return res; -} - -#define MERGESTATUS(x) cfi_merge_status((x), map, cfi) - - -/* - * Sends a CFI command to a bank of flash for the given geometry. - * - * Returns the offset in flash where the command was written. - * If prev_val is non-null, it will be set to the value at the command address, - * before the command was written. - */ -static inline uint32_t cfi_send_gen_cmd(u_char cmd, uint32_t cmd_addr, uint32_t base, - struct map_info *map, struct cfi_private *cfi, - int type, map_word *prev_val) -{ - map_word val; - uint32_t addr = base + cfi_build_cmd_addr(cmd_addr, map, cfi); - val = cfi_build_cmd(cmd, map, cfi); - - if (prev_val) - *prev_val = map_read(map, addr); - - map_write(map, val, addr); - - return addr - base; -} - -static inline uint8_t cfi_read_query(struct map_info *map, uint32_t addr) -{ - map_word val = map_read(map, addr); - - if (map_bankwidth_is_1(map)) { - return val.x[0]; - } else if (map_bankwidth_is_2(map)) { - return cfi16_to_cpu(map, val.x[0]); - } else { - /* No point in a 64-bit byteswap since that would just be - swapping the responses from different chips, and we are - only interested in one chip (a representative sample) */ - return cfi32_to_cpu(map, val.x[0]); - } -} - -static inline uint16_t cfi_read_query16(struct map_info *map, uint32_t addr) -{ - map_word val = map_read(map, addr); - - if (map_bankwidth_is_1(map)) { - return val.x[0] & 0xff; - } else if (map_bankwidth_is_2(map)) { - return cfi16_to_cpu(map, val.x[0]); - } else { - /* No point in a 64-bit byteswap since that would just be - swapping the responses from different chips, and we are - only interested in one chip (a representative sample) */ - return cfi32_to_cpu(map, val.x[0]); - } -} - -static inline void cfi_udelay(int us) -{ - if (us >= 1000) { - msleep((us+999)/1000); - } else { - udelay(us); - cond_resched(); - } -} - -int __xipram cfi_qry_present(struct map_info *map, __u32 base, - struct cfi_private *cfi); -int __xipram cfi_qry_mode_on(uint32_t base, struct map_info *map, - struct cfi_private *cfi); -void __xipram cfi_qry_mode_off(uint32_t base, struct map_info *map, - struct cfi_private *cfi); - -struct cfi_extquery *cfi_read_pri(struct map_info *map, uint16_t adr, uint16_t size, - const char* name); -struct cfi_fixup { - uint16_t mfr; - uint16_t id; - void (*fixup)(struct mtd_info *mtd); -}; - -#define CFI_MFR_ANY 0xFFFF -#define CFI_ID_ANY 0xFFFF -#define CFI_MFR_CONTINUATION 0x007F - -#define CFI_MFR_AMD 0x0001 -#define CFI_MFR_AMIC 0x0037 -#define CFI_MFR_ATMEL 0x001F -#define CFI_MFR_EON 0x001C -#define CFI_MFR_FUJITSU 0x0004 -#define CFI_MFR_HYUNDAI 0x00AD -#define CFI_MFR_INTEL 0x0089 -#define CFI_MFR_MACRONIX 0x00C2 -#define CFI_MFR_NEC 0x0010 -#define CFI_MFR_PMC 0x009D -#define CFI_MFR_SAMSUNG 0x00EC -#define CFI_MFR_SHARP 0x00B0 -#define CFI_MFR_SST 0x00BF -#define CFI_MFR_ST 0x0020 /* STMicroelectronics */ -#define CFI_MFR_TOSHIBA 0x0098 -#define CFI_MFR_WINBOND 0x00DA - -void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups); - -typedef int (*varsize_frob_t)(struct map_info *map, struct flchip *chip, - unsigned long adr, int len, void *thunk); - -int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob, - loff_t ofs, size_t len, void *thunk); - - -#endif /* __MTD_CFI_H__ */ |