diff options
Diffstat (limited to 'drivers/mtd')
44 files changed, 3092 insertions, 1605 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index e7563a9872d..5fbf29e1e64 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -43,15 +43,17 @@ // debugging, turns off buffer write mode if set to 1 #define FORCE_WORD_WRITE 0 -#define MANUFACTURER_INTEL 0x0089 +/* Intel chips */ #define I82802AB 0x00ad #define I82802AC 0x00ac #define PF38F4476 0x881c -#define MANUFACTURER_ST 0x0020 +/* STMicroelectronics chips */ #define M50LPW080 0x002F #define M50FLW080A 0x0080 #define M50FLW080B 0x0081 +/* Atmel chips */ #define AT49BV640D 0x02de +#define AT49BV640DT 0x02db static int cfi_intelext_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); @@ -199,6 +201,16 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param) cfi->cfiq->BufWriteTimeoutMax = 0; } +static void fixup_at49bv640dx_lock(struct mtd_info *mtd, void *param) +{ + 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; +} + #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE /* Some Intel Strata Flash prior to FPO revision C has bugs in this area */ static void fixup_intel_strataflash(struct mtd_info *mtd, void* param) @@ -283,6 +295,8 @@ static void fixup_unlock_powerup_lock(struct mtd_info *mtd, void *param) static struct cfi_fixup cfi_fixup_table[] = { { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL }, + { CFI_MFR_ATMEL, AT49BV640D, fixup_at49bv640dx_lock, NULL }, + { CFI_MFR_ATMEL, AT49BV640DT, fixup_at49bv640dx_lock, NULL }, #ifdef CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE { CFI_MFR_ANY, CFI_ID_ANY, fixup_intel_strataflash, NULL }, #endif @@ -294,16 +308,16 @@ static struct cfi_fixup cfi_fixup_table[] = { #endif { CFI_MFR_ST, 0x00ba, /* M28W320CT */ fixup_st_m28w320ct, NULL }, { CFI_MFR_ST, 0x00bb, /* M28W320CB */ fixup_st_m28w320cb, NULL }, - { MANUFACTURER_INTEL, CFI_ID_ANY, fixup_unlock_powerup_lock, NULL, }, + { CFI_MFR_INTEL, CFI_ID_ANY, fixup_unlock_powerup_lock, NULL, }, { 0, 0, NULL, NULL } }; static struct cfi_fixup jedec_fixup_table[] = { - { MANUFACTURER_INTEL, I82802AB, fixup_use_fwh_lock, NULL, }, - { MANUFACTURER_INTEL, I82802AC, fixup_use_fwh_lock, NULL, }, - { MANUFACTURER_ST, M50LPW080, fixup_use_fwh_lock, NULL, }, - { MANUFACTURER_ST, M50FLW080A, fixup_use_fwh_lock, NULL, }, - { MANUFACTURER_ST, M50FLW080B, fixup_use_fwh_lock, NULL, }, + { CFI_MFR_INTEL, I82802AB, fixup_use_fwh_lock, NULL, }, + { CFI_MFR_INTEL, I82802AC, fixup_use_fwh_lock, NULL, }, + { CFI_MFR_ST, M50LPW080, fixup_use_fwh_lock, NULL, }, + { CFI_MFR_ST, M50FLW080A, fixup_use_fwh_lock, NULL, }, + { CFI_MFR_ST, M50FLW080B, fixup_use_fwh_lock, NULL, }, { 0, 0, NULL, NULL } }; static struct cfi_fixup fixup_table[] = { @@ -319,7 +333,7 @@ static struct cfi_fixup fixup_table[] = { static void cfi_fixup_major_minor(struct cfi_private *cfi, struct cfi_pri_intelext *extp) { - if (cfi->mfr == MANUFACTURER_INTEL && + if (cfi->mfr == CFI_MFR_INTEL && cfi->id == PF38F4476 && extp->MinorVersion == '3') extp->MinorVersion = '1'; } @@ -2235,7 +2249,7 @@ static int cfi_intelext_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, /* Some chips have OTP located in the _top_ partition only. For example: Intel 28F256L18T (T means top-parameter device) */ - if (cfi->mfr == MANUFACTURER_INTEL) { + if (cfi->mfr == CFI_MFR_INTEL) { switch (cfi->id) { case 0x880b: case 0x880c: @@ -2564,6 +2578,7 @@ static int cfi_intelext_reset(struct mtd_info *mtd) if (!ret) { map_write(map, CMD(0xff), chip->start); chip->state = FL_SHUTDOWN; + put_chip(map, chip, chip->start); } spin_unlock(chip->mutex); } diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 94bb61e1904..f3600e8d538 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -490,10 +490,6 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) } #endif - /* FIXME: erase-suspend-program is broken. See - http://lists.infradead.org/pipermail/linux-mtd/2003-December/009001.html */ - printk(KERN_NOTICE "cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.\n"); - __module_get(THIS_MODULE); return mtd; @@ -573,7 +569,6 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr if (time_after(jiffies, timeo)) { printk(KERN_ERR "Waiting for chip to be ready timed out.\n"); - spin_unlock(chip->mutex); return -EIO; } spin_unlock(chip->mutex); @@ -589,15 +584,9 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr return 0; case FL_ERASING: - if (mode == FL_WRITING) /* FIXME: Erase-suspend-program appears broken. */ - goto sleep; - - if (!( mode == FL_READY - || mode == FL_POINT - || !cfip - || (mode == FL_WRITING && (cfip->EraseSuspend & 0x2)) - || (mode == FL_WRITING && (cfip->EraseSuspend & 0x1) - ))) + if (!cfip || !(cfip->EraseSuspend & (0x1|0x2)) || + !(mode == FL_READY || mode == FL_POINT || + (mode == FL_WRITING && (cfip->EraseSuspend & 0x2)))) goto sleep; /* We could check to see if we're trying to access the sector diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c index c5a84fda541..ca584d0380b 100755 --- a/drivers/mtd/chips/cfi_util.c +++ b/drivers/mtd/chips/cfi_util.c @@ -71,6 +71,13 @@ int __xipram cfi_qry_mode_on(uint32_t base, struct map_info *map, cfi_send_gen_cmd(0x98, 0x555, base, map, cfi, cfi->device_type, NULL); if (cfi_qry_present(map, base, cfi)) return 1; + /* some old SST chips, e.g. 39VF160x/39VF320x */ + cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0xAA, 0x5555, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0x55, 0x2AAA, base, map, cfi, cfi->device_type, NULL); + cfi_send_gen_cmd(0x98, 0x5555, base, map, cfi, cfi->device_type, NULL); + if (cfi_qry_present(map, base, cfi)) + return 1; /* QRY not found */ return 0; } diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index 736a3be265f..1bec5e1ce6a 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -142,8 +142,8 @@ /* ST - www.st.com */ #define M29F800AB 0x0058 -#define M29W800DT 0x00D7 -#define M29W800DB 0x005B +#define M29W800DT 0x22D7 +#define M29W800DB 0x225B #define M29W400DT 0x00EE #define M29W400DB 0x00EF #define M29W160DT 0x22C4 @@ -1575,7 +1575,7 @@ static const struct amd_flash_info jedec_table[] = { .dev_id = M29W800DT, .name = "ST M29W800DT", .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, - .uaddr = MTD_UADDR_0x5555_0x2AAA, /* ???? */ + .uaddr = MTD_UADDR_0x0AAA_0x0555, .dev_size = SIZE_1MiB, .cmd_set = P_ID_AMD_STD, .nr_regions = 4, @@ -1590,7 +1590,7 @@ static const struct amd_flash_info jedec_table[] = { .dev_id = M29W800DB, .name = "ST M29W800DB", .devtypes = CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8, - .uaddr = MTD_UADDR_0x5555_0x2AAA, /* ???? */ + .uaddr = MTD_UADDR_0x0AAA_0x0555, .dev_size = SIZE_1MiB, .cmd_set = P_ID_AMD_STD, .nr_regions = 4, diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 4c19269de91..f3f4768d6e1 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -22,6 +22,7 @@ #include <linux/mutex.h> #include <linux/math64.h> #include <linux/sched.h> +#include <linux/mod_devicetable.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -29,9 +30,6 @@ #include <linux/spi/spi.h> #include <linux/spi/flash.h> - -#define FLASH_PAGESIZE 256 - /* Flash opcodes. */ #define OPCODE_WREN 0x06 /* Write enable */ #define OPCODE_RDSR 0x05 /* Read status register */ @@ -61,7 +59,7 @@ /* Define max times to check status register before we give up. */ #define MAX_READY_WAIT_JIFFIES (40 * HZ) /* M25P16 specs 40s max chip erase */ -#define CMD_SIZE 4 +#define MAX_CMD_SIZE 4 #ifdef CONFIG_M25PXX_USE_FAST_READ #define OPCODE_READ OPCODE_FAST_READ @@ -78,8 +76,10 @@ struct m25p { struct mutex lock; struct mtd_info mtd; unsigned partitioned:1; + u16 page_size; + u16 addr_width; u8 erase_opcode; - u8 command[CMD_SIZE + FAST_READ_DUMMY_BYTE]; + u8 *command; }; static inline struct m25p *mtd_to_m25p(struct mtd_info *mtd) @@ -198,6 +198,19 @@ static int erase_chip(struct m25p *flash) return 0; } +static void m25p_addr2cmd(struct m25p *flash, unsigned int addr, u8 *cmd) +{ + /* opcode is in cmd[0] */ + cmd[1] = addr >> (flash->addr_width * 8 - 8); + cmd[2] = addr >> (flash->addr_width * 8 - 16); + cmd[3] = addr >> (flash->addr_width * 8 - 24); +} + +static int m25p_cmdsz(struct m25p *flash) +{ + return 1 + flash->addr_width; +} + /* * Erase one sector of flash memory at offset ``offset'' which is any * address within the sector which should be erased. @@ -219,11 +232,9 @@ static int erase_sector(struct m25p *flash, u32 offset) /* Set up command buffer. */ flash->command[0] = flash->erase_opcode; - flash->command[1] = offset >> 16; - flash->command[2] = offset >> 8; - flash->command[3] = offset; + m25p_addr2cmd(flash, offset, flash->command); - spi_write(flash->spi, flash->command, CMD_SIZE); + spi_write(flash->spi, flash->command, m25p_cmdsz(flash)); return 0; } @@ -325,7 +336,7 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, * Should add 1 byte DUMMY_BYTE. */ t[0].tx_buf = flash->command; - t[0].len = CMD_SIZE + FAST_READ_DUMMY_BYTE; + t[0].len = m25p_cmdsz(flash) + FAST_READ_DUMMY_BYTE; spi_message_add_tail(&t[0], &m); t[1].rx_buf = buf; @@ -352,13 +363,11 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, /* Set up the write data buffer. */ flash->command[0] = OPCODE_READ; - flash->command[1] = from >> 16; - flash->command[2] = from >> 8; - flash->command[3] = from; + m25p_addr2cmd(flash, from, flash->command); spi_sync(flash->spi, &m); - *retlen = m.actual_length - CMD_SIZE - FAST_READ_DUMMY_BYTE; + *retlen = m.actual_length - m25p_cmdsz(flash) - FAST_READ_DUMMY_BYTE; mutex_unlock(&flash->lock); @@ -396,7 +405,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, memset(t, 0, (sizeof t)); t[0].tx_buf = flash->command; - t[0].len = CMD_SIZE; + t[0].len = m25p_cmdsz(flash); spi_message_add_tail(&t[0], &m); t[1].tx_buf = buf; @@ -414,41 +423,36 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, /* Set up the opcode in the write buffer. */ flash->command[0] = OPCODE_PP; - flash->command[1] = to >> 16; - flash->command[2] = to >> 8; - flash->command[3] = to; + m25p_addr2cmd(flash, to, flash->command); - /* what page do we start with? */ - page_offset = to % FLASH_PAGESIZE; + page_offset = to & (flash->page_size - 1); /* do all the bytes fit onto one page? */ - if (page_offset + len <= FLASH_PAGESIZE) { + if (page_offset + len <= flash->page_size) { t[1].len = len; spi_sync(flash->spi, &m); - *retlen = m.actual_length - CMD_SIZE; + *retlen = m.actual_length - m25p_cmdsz(flash); } else { u32 i; /* the size of data remaining on the first page */ - page_size = FLASH_PAGESIZE - page_offset; + page_size = flash->page_size - page_offset; t[1].len = page_size; spi_sync(flash->spi, &m); - *retlen = m.actual_length - CMD_SIZE; + *retlen = m.actual_length - m25p_cmdsz(flash); - /* write everything in PAGESIZE chunks */ + /* write everything in flash->page_size chunks */ for (i = page_size; i < len; i += page_size) { page_size = len - i; - if (page_size > FLASH_PAGESIZE) - page_size = FLASH_PAGESIZE; + if (page_size > flash->page_size) + page_size = flash->page_size; /* write the next page to flash */ - flash->command[1] = (to + i) >> 16; - flash->command[2] = (to + i) >> 8; - flash->command[3] = (to + i); + m25p_addr2cmd(flash, to + i, flash->command); t[1].tx_buf = buf + i; t[1].len = page_size; @@ -460,7 +464,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, spi_sync(flash->spi, &m); if (retlen) - *retlen += m.actual_length - CMD_SIZE; + *retlen += m.actual_length - m25p_cmdsz(flash); } } @@ -492,7 +496,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, memset(t, 0, (sizeof t)); t[0].tx_buf = flash->command; - t[0].len = CMD_SIZE; + t[0].len = m25p_cmdsz(flash); spi_message_add_tail(&t[0], &m); t[1].tx_buf = buf; @@ -511,9 +515,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, /* Start write from odd address. */ if (actual) { flash->command[0] = OPCODE_BP; - flash->command[1] = to >> 16; - flash->command[2] = to >> 8; - flash->command[3] = to; + m25p_addr2cmd(flash, to, flash->command); /* write one byte. */ t[1].len = 1; @@ -521,17 +523,15 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, ret = wait_till_ready(flash); if (ret) goto time_out; - *retlen += m.actual_length - CMD_SIZE; + *retlen += m.actual_length - m25p_cmdsz(flash); } to += actual; flash->command[0] = OPCODE_AAI_WP; - flash->command[1] = to >> 16; - flash->command[2] = to >> 8; - flash->command[3] = to; + m25p_addr2cmd(flash, to, flash->command); /* Write out most of the data here. */ - cmd_sz = CMD_SIZE; + cmd_sz = m25p_cmdsz(flash); for (; actual < len - 1; actual += 2) { t[0].len = cmd_sz; /* write two bytes. */ @@ -555,10 +555,8 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, if (actual != len) { write_enable(flash); flash->command[0] = OPCODE_BP; - flash->command[1] = to >> 16; - flash->command[2] = to >> 8; - flash->command[3] = to; - t[0].len = CMD_SIZE; + m25p_addr2cmd(flash, to, flash->command); + t[0].len = m25p_cmdsz(flash); t[1].len = 1; t[1].tx_buf = buf + actual; @@ -566,7 +564,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, ret = wait_till_ready(flash); if (ret) goto time_out; - *retlen += m.actual_length - CMD_SIZE; + *retlen += m.actual_length - m25p_cmdsz(flash); write_disable(flash); } @@ -582,8 +580,6 @@ time_out: */ struct flash_info { - char *name; - /* JEDEC id zero means "no ID" (most older chips); otherwise it has * a high byte of zero plus three data bytes: the manufacturer id, * then a two byte device id. @@ -597,87 +593,119 @@ struct flash_info { unsigned sector_size; u16 n_sectors; + u16 page_size; + u16 addr_width; + u16 flags; #define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */ +#define M25P_NO_ERASE 0x02 /* No erase command needed */ }; +#define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ + ((kernel_ulong_t)&(struct flash_info) { \ + .jedec_id = (_jedec_id), \ + .ext_id = (_ext_id), \ + .sector_size = (_sector_size), \ + .n_sectors = (_n_sectors), \ + .page_size = 256, \ + .addr_width = 3, \ + .flags = (_flags), \ + }) + +#define CAT25_INFO(_sector_size, _n_sectors, _page_size, _addr_width) \ + ((kernel_ulong_t)&(struct flash_info) { \ + .sector_size = (_sector_size), \ + .n_sectors = (_n_sectors), \ + .page_size = (_page_size), \ + .addr_width = (_addr_width), \ + .flags = M25P_NO_ERASE, \ + }) /* NOTE: double check command sets and memory organization when you add * more flash chips. This current list focusses on newer chips, which * have been converging on command sets which including JEDEC ID. */ -static struct flash_info __devinitdata m25p_data [] = { - +static const struct spi_device_id m25p_ids[] = { /* Atmel -- some are (confusingly) marketed as "DataFlash" */ - { "at25fs010", 0x1f6601, 0, 32 * 1024, 4, SECT_4K, }, - { "at25fs040", 0x1f6604, 0, 64 * 1024, 8, SECT_4K, }, + { "at25fs010", INFO(0x1f6601, 0, 32 * 1024, 4, SECT_4K) }, + { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) }, - { "at25df041a", 0x1f4401, 0, 64 * 1024, 8, SECT_4K, }, - { "at25df641", 0x1f4800, 0, 64 * 1024, 128, SECT_4K, }, + { "at25df041a", INFO(0x1f4401, 0, 64 * 1024, 8, SECT_4K) }, + { "at25df641", INFO(0x1f4800, 0, 64 * 1024, 128, SECT_4K) }, - { "at26f004", 0x1f0400, 0, 64 * 1024, 8, SECT_4K, }, - { "at26df081a", 0x1f4501, 0, 64 * 1024, 16, SECT_4K, }, - { "at26df161a", 0x1f4601, 0, 64 * 1024, 32, SECT_4K, }, - { "at26df321", 0x1f4701, 0, 64 * 1024, 64, SECT_4K, }, + { "at26f004", INFO(0x1f0400, 0, 64 * 1024, 8, SECT_4K) }, + { "at26df081a", INFO(0x1f4501, 0, 64 * 1024, 16, SECT_4K) }, + { "at26df161a", INFO(0x1f4601, 0, 64 * 1024, 32, SECT_4K) }, + { "at26df321", INFO(0x1f4701, 0, 64 * 1024, 64, SECT_4K) }, /* Macronix */ - { "mx25l3205d", 0xc22016, 0, 64 * 1024, 64, }, - { "mx25l6405d", 0xc22017, 0, 64 * 1024, 128, }, - { "mx25l12805d", 0xc22018, 0, 64 * 1024, 256, }, - { "mx25l12855e", 0xc22618, 0, 64 * 1024, 256, }, + { "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) }, + { "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 0) }, + { "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 0) }, + { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) }, + { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) }, /* Spansion -- single (large) sector size only, at least * for the chips listed here (without boot sectors). */ - { "s25sl004a", 0x010212, 0, 64 * 1024, 8, }, - { "s25sl008a", 0x010213, 0, 64 * 1024, 16, }, - { "s25sl016a", 0x010214, 0, 64 * 1024, 32, }, - { "s25sl032a", 0x010215, 0, 64 * 1024, 64, }, - { "s25sl064a", 0x010216, 0, 64 * 1024, 128, }, - { "s25sl12800", 0x012018, 0x0300, 256 * 1024, 64, }, - { "s25sl12801", 0x012018, 0x0301, 64 * 1024, 256, }, - { "s25fl129p0", 0x012018, 0x4d00, 256 * 1024, 64, }, - { "s25fl129p1", 0x012018, 0x4d01, 64 * 1024, 256, }, + { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8, 0) }, + { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16, 0) }, + { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32, 0) }, + { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) }, + { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) }, + { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) }, + { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) }, + { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) }, + { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, 0) }, /* SST -- large erase sizes are "overlays", "sectors" are 4K */ - { "sst25vf040b", 0xbf258d, 0, 64 * 1024, 8, SECT_4K, }, - { "sst25vf080b", 0xbf258e, 0, 64 * 1024, 16, SECT_4K, }, - { "sst25vf016b", 0xbf2541, 0, 64 * 1024, 32, SECT_4K, }, - { "sst25vf032b", 0xbf254a, 0, 64 * 1024, 64, SECT_4K, }, - { "sst25wf512", 0xbf2501, 0, 64 * 1024, 1, SECT_4K, }, - { "sst25wf010", 0xbf2502, 0, 64 * 1024, 2, SECT_4K, }, - { "sst25wf020", 0xbf2503, 0, 64 * 1024, 4, SECT_4K, }, - { "sst25wf040", 0xbf2504, 0, 64 * 1024, 8, SECT_4K, }, + { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K) }, + { "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K) }, + { "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K) }, + { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K) }, + { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K) }, + { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K) }, + { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K) }, + { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K) }, /* ST Microelectronics -- newer production may have feature updates */ - { "m25p05", 0x202010, 0, 32 * 1024, 2, }, - { "m25p10", 0x202011, 0, 32 * 1024, 4, }, - { "m25p20", 0x202012, 0, 64 * 1024, 4, }, - { "m25p40", 0x202013, 0, 64 * 1024, 8, }, - { "m25p80", 0, 0, 64 * 1024, 16, }, - { "m25p16", 0x202015, 0, 64 * 1024, 32, }, - { "m25p32", 0x202016, 0, 64 * 1024, 64, }, - { "m25p64", 0x202017, 0, 64 * 1024, 128, }, - { "m25p128", 0x202018, 0, 256 * 1024, 64, }, - - { "m45pe10", 0x204011, 0, 64 * 1024, 2, }, - { "m45pe80", 0x204014, 0, 64 * 1024, 16, }, - { "m45pe16", 0x204015, 0, 64 * 1024, 32, }, - - { "m25pe80", 0x208014, 0, 64 * 1024, 16, }, - { "m25pe16", 0x208015, 0, 64 * 1024, 32, SECT_4K, }, + { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) }, + { "m25p10", INFO(0x202011, 0, 32 * 1024, 4, 0) }, + { "m25p20", INFO(0x202012, 0, 64 * 1024, 4, 0) }, + { "m25p40", INFO(0x202013, 0, 64 * 1024, 8, 0) }, + { "m25p80", INFO(0x202014, 0, 64 * 1024, 16, 0) }, + { "m25p16", INFO(0x202015, 0, 64 * 1024, 32, 0) }, + { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) }, + { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) }, + { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) }, + + { "m45pe10", INFO(0x204011, 0, 64 * 1024, 2, 0) }, + { "m45pe80", INFO(0x204014, 0, 64 * 1024, 16, 0) }, + { "m45pe16", INFO(0x204015, 0, 64 * 1024, 32, 0) }, + + { "m25pe80", INFO(0x208014, 0, 64 * 1024, 16, 0) }, + { "m25pe16", INFO(0x208015, 0, 64 * 1024, 32, SECT_4K) }, /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ - { "w25x10", 0xef3011, 0, 64 * 1024, 2, SECT_4K, }, - { "w25x20", 0xef3012, 0, 64 * 1024, 4, SECT_4K, }, - { "w25x40", 0xef3013, 0, 64 * 1024, 8, SECT_4K, }, - { "w25x80", 0xef3014, 0, 64 * 1024, 16, SECT_4K, }, - { "w25x16", 0xef3015, 0, 64 * 1024, 32, SECT_4K, }, - { "w25x32", 0xef3016, 0, 64 * 1024, 64, SECT_4K, }, - { "w25x64", 0xef3017, 0, 64 * 1024, 128, SECT_4K, }, + { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, + { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) }, + { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) }, + { "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) }, + { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) }, + { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) }, + { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, + + /* Catalyst / On Semiconductor -- non-JEDEC */ + { "cat25c11", CAT25_INFO( 16, 8, 16, 1) }, + { "cat25c03", CAT25_INFO( 32, 8, 16, 2) }, + { "cat25c09", CAT25_INFO( 128, 8, 32, 2) }, + { "cat25c17", CAT25_INFO( 256, 8, 32, 2) }, + { "cat25128", CAT25_INFO(2048, 8, 64, 2) }, + { }, }; +MODULE_DEVICE_TABLE(spi, m25p_ids); -static struct flash_info *__devinit jedec_probe(struct spi_device *spi) +static const struct spi_device_id *__devinit jedec_probe(struct spi_device *spi) { int tmp; u8 code = OPCODE_RDID; @@ -702,18 +730,24 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi) jedec = jedec << 8; jedec |= id[2]; + /* + * Some chips (like Numonyx M25P80) have JEDEC and non-JEDEC variants, + * which depend on technology process. Officially RDID command doesn't + * exist for non-JEDEC chips, but for compatibility they return ID 0. + */ + if (jedec == 0) + return NULL; + ext_jedec = id[3] << 8 | id[4]; - for (tmp = 0, info = m25p_data; - tmp < ARRAY_SIZE(m25p_data); - tmp++, info++) { + for (tmp = 0; tmp < ARRAY_SIZE(m25p_ids) - 1; tmp++) { + info = (void *)m25p_ids[tmp].driver_data; if (info->jedec_id == jedec) { if (info->ext_id != 0 && info->ext_id != ext_jedec) continue; - return info; + return &m25p_ids[tmp]; } } - dev_err(&spi->dev, "unrecognized JEDEC id %06x\n", jedec); return NULL; } @@ -725,6 +759,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi) */ static int __devinit m25p_probe(struct spi_device *spi) { + const struct spi_device_id *id = spi_get_device_id(spi); struct flash_platform_data *data; struct m25p *flash; struct flash_info *info; @@ -737,50 +772,65 @@ static int __devinit m25p_probe(struct spi_device *spi) */ data = spi->dev.platform_data; if (data && data->type) { - for (i = 0, info = m25p_data; - i < ARRAY_SIZE(m25p_data); - i++, info++) { - if (strcmp(data->type, info->name) == 0) - break; - } + const struct spi_device_id *plat_id; - /* unrecognized chip? */ - if (i == ARRAY_SIZE(m25p_data)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: unrecognized id %s\n", - dev_name(&spi->dev), data->type); - info = NULL; - - /* recognized; is that chip really what's there? */ - } else if (info->jedec_id) { - struct flash_info *chip = jedec_probe(spi); - - if (!chip || chip != info) { - dev_warn(&spi->dev, "found %s, expected %s\n", - chip ? chip->name : "UNKNOWN", - info->name); - info = NULL; - } + for (i = 0; i < ARRAY_SIZE(m25p_ids) - 1; i++) { + plat_id = &m25p_ids[i]; + if (strcmp(data->type, plat_id->name)) + continue; + break; } - } else - info = jedec_probe(spi); - if (!info) - return -ENODEV; + if (plat_id) + id = plat_id; + else + dev_warn(&spi->dev, "unrecognized id %s\n", data->type); + } + + info = (void *)id->driver_data; + + if (info->jedec_id) { + const struct spi_device_id *jid; + + jid = jedec_probe(spi); + if (!jid) { + dev_info(&spi->dev, "non-JEDEC variant of %s\n", + id->name); + } else if (jid != id) { + /* + * JEDEC knows better, so overwrite platform ID. We + * can't trust partitions any longer, but we'll let + * mtd apply them anyway, since some partitions may be + * marked read-only, and we don't want to lose that + * information, even if it's not 100% accurate. + */ + dev_warn(&spi->dev, "found %s, expected %s\n", + jid->name, id->name); + id = jid; + info = (void *)jid->driver_data; + } + } flash = kzalloc(sizeof *flash, GFP_KERNEL); if (!flash) return -ENOMEM; + flash->command = kmalloc(MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE, GFP_KERNEL); + if (!flash->command) { + kfree(flash); + return -ENOMEM; + } flash->spi = spi; mutex_init(&flash->lock); dev_set_drvdata(&spi->dev, flash); /* - * Atmel serial flash tend to power up - * with the software protection bits set + * Atmel and SST serial flash tend to power + * up with the software protection bits set */ - if (info->jedec_id >> 16 == 0x1f) { + if (info->jedec_id >> 16 == 0x1f || + info->jedec_id >> 16 == 0xbf) { write_enable(flash); write_sr(flash, 0); } @@ -812,9 +862,14 @@ static int __devinit m25p_probe(struct spi_device *spi) flash->mtd.erasesize = info->sector_size; } + if (info->flags & M25P_NO_ERASE) + flash->mtd.flags |= MTD_NO_ERASE; + flash->mtd.dev.parent = &spi->dev; + flash->page_size = info->page_size; + flash->addr_width = info->addr_width; - dev_info(&spi->dev, "%s (%lld Kbytes)\n", info->name, + dev_info(&spi->dev, "%s (%lld Kbytes)\n", id->name, (long long)flash->mtd.size >> 10); DEBUG(MTD_DEBUG_LEVEL2, @@ -888,8 +943,10 @@ static int __devexit m25p_remove(struct spi_device *spi) status = del_mtd_partitions(&flash->mtd); else status = del_mtd_device(&flash->mtd); - if (status == 0) + if (status == 0) { + kfree(flash->command); kfree(flash); + } return 0; } @@ -900,6 +957,7 @@ static struct spi_driver m25p80_driver = { .bus = &spi_bus_type, .owner = THIS_MODULE, }, + .id_table = m25p_ids, .probe = m25p_probe, .remove = __devexit_p(m25p_remove), diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 93e3627be74..19817404ce7 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -636,6 +636,7 @@ add_dataflash_otp(struct spi_device *spi, char *name, struct mtd_info *device; struct flash_platform_data *pdata = spi->dev.platform_data; char *otp_tag = ""; + int err = 0; priv = kzalloc(sizeof *priv, GFP_KERNEL); if (!priv) @@ -693,13 +694,23 @@ add_dataflash_otp(struct spi_device *spi, char *name, if (nr_parts > 0) { priv->partitioned = 1; - return add_mtd_partitions(device, parts, nr_parts); + err = add_mtd_partitions(device, parts, nr_parts); + goto out; } } else if (pdata && pdata->nr_parts) dev_warn(&spi->dev, "ignoring %d default partitions on %s\n", pdata->nr_parts, device->name); - return add_mtd_device(device) == 1 ? -ENODEV : 0; + if (add_mtd_device(device) == 1) + err = -ENODEV; + +out: + if (!err) + return 0; + + dev_set_drvdata(&spi->dev, NULL); + kfree(priv); + return err; } static inline int __devinit @@ -932,8 +943,10 @@ static int __devexit dataflash_remove(struct spi_device *spi) status = del_mtd_partitions(&flash->mtd); else status = del_mtd_device(&flash->mtd); - if (status == 0) + if (status == 0) { + dev_set_drvdata(&spi->dev, NULL); kfree(flash); + } return status; } diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 847e214ade5..4c364d44ad5 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -359,12 +359,6 @@ config MTD_SA1100 the SA1100 and SA1110, including the Assabet and the Compaq iPAQ. If you have such a board, say 'Y'. -config MTD_IPAQ - tristate "CFI Flash device mapped on Compaq/HP iPAQ" - depends on IPAQ_HANDHELD && MTD_CFI - help - This provides a driver for the on-board flash of the iPAQ. - config MTD_DC21285 tristate "CFI Flash device mapped on DC21285 Footbridge" depends on MTD_CFI && ARCH_FOOTBRIDGE && MTD_COMPLEX_MAPPINGS diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index ae2f6dbe43c..ce315214ff2 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -24,12 +24,12 @@ obj-$(CONFIG_MTD_CEIVA) += ceiva.o obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o obj-$(CONFIG_MTD_PHYSMAP) += physmap.o obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o +obj-$(CONFIG_MTD_PISMO) += pismo.o obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o -obj-$(CONFIG_MTD_IPAQ) += ipaq-flash.o obj-$(CONFIG_MTD_SBC_GXX) += sbc_gxx.o obj-$(CONFIG_MTD_SC520CDP) += sc520cdp.o obj-$(CONFIG_MTD_NETSC520) += netsc520.o diff --git a/drivers/mtd/maps/ipaq-flash.c b/drivers/mtd/maps/ipaq-flash.c deleted file mode 100644 index 76708e796b7..00000000000 --- a/drivers/mtd/maps/ipaq-flash.c +++ /dev/null @@ -1,460 +0,0 @@ -/* - * Flash memory access on iPAQ Handhelds (either SA1100 or PXA250 based) - * - * (C) 2000 Nicolas Pitre <nico@fluxnic.net> - * (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com> - * (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <asm/page.h> -#include <asm/mach-types.h> -#include <asm/system.h> -#include <asm/errno.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> -#ifdef CONFIG_MTD_CONCAT -#include <linux/mtd/concat.h> -#endif - -#include <mach/hardware.h> -#include <mach/h3600.h> -#include <asm/io.h> - - -#ifndef CONFIG_IPAQ_HANDHELD -#error This is for iPAQ Handhelds only -#endif -#ifdef CONFIG_SA1100_JORNADA56X - -static void jornada56x_set_vpp(struct map_info *map, int vpp) -{ - if (vpp) - GPSR = GPIO_GPIO26; - else - GPCR = GPIO_GPIO26; - GPDR |= GPIO_GPIO26; -} - -#endif - -#ifdef CONFIG_SA1100_JORNADA720 - -static void jornada720_set_vpp(struct map_info *map, int vpp) -{ - if (vpp) - PPSR |= 0x80; - else - PPSR &= ~0x80; - PPDR |= 0x80; -} - -#endif - -#define MAX_IPAQ_CS 2 /* Number of CS we are going to test */ - -#define IPAQ_MAP_INIT(X) \ - { \ - name: "IPAQ flash " X, \ - } - - -static struct map_info ipaq_map[MAX_IPAQ_CS] = { - IPAQ_MAP_INIT("bank 1"), - IPAQ_MAP_INIT("bank 2") -}; - -static struct mtd_info *my_sub_mtd[MAX_IPAQ_CS] = { - NULL, - NULL -}; - -/* - * Here are partition information for all known IPAQ-based devices. - * See include/linux/mtd/partitions.h for definition of the mtd_partition - * structure. - * - * The *_max_flash_size is the maximum possible mapped flash size which - * is not necessarily the actual flash size. It must be no more than - * the value specified in the "struct map_desc *_io_desc" mapping - * definition for the corresponding machine. - * - * Please keep these in alphabetical order, and formatted as per existing - * entries. Thanks. - */ - -#ifdef CONFIG_IPAQ_HANDHELD -static unsigned long h3xxx_max_flash_size = 0x04000000; -static struct mtd_partition h3xxx_partitions[] = { - { - name: "H3XXX boot firmware", -#ifndef CONFIG_LAB - size: 0x00040000, -#else - size: 0x00080000, -#endif - offset: 0, -#ifndef CONFIG_LAB - mask_flags: MTD_WRITEABLE, /* force read-only */ -#endif - }, - { - name: "H3XXX root jffs2", -#ifndef CONFIG_LAB - size: 0x2000000 - 2*0x40000, /* Warning, this is fixed later */ - offset: 0x00040000, -#else - size: 0x2000000 - 0x40000 - 0x80000, /* Warning, this is fixed later */ - offset: 0x00080000, -#endif - }, - { - name: "asset", - size: 0x40000, - offset: 0x2000000 - 0x40000, /* Warning, this is fixed later */ - mask_flags: MTD_WRITEABLE, /* force read-only */ - } -}; - -#ifndef CONFIG_MTD_CONCAT -static struct mtd_partition h3xxx_partitions_bank2[] = { - /* this is used only on 2 CS machines when concat is not present */ - { - name: "second H3XXX root jffs2", - size: 0x1000000 - 0x40000, /* Warning, this is fixed later */ - offset: 0x00000000, - }, - { - name: "second asset", - size: 0x40000, - offset: 0x1000000 - 0x40000, /* Warning, this is fixed later */ - mask_flags: MTD_WRITEABLE, /* force read-only */ - } -}; -#endif - -static DEFINE_SPINLOCK(ipaq_vpp_lock); - -static void h3xxx_set_vpp(struct map_info *map, int vpp) -{ - static int nest = 0; - - spin_lock(&ipaq_vpp_lock); - if (vpp) - nest++; - else - nest--; - if (nest) - assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 1); - else - assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 0); - spin_unlock(&ipaq_vpp_lock); -} - -#endif - -#if defined(CONFIG_SA1100_JORNADA56X) || defined(CONFIG_SA1100_JORNADA720) -static unsigned long jornada_max_flash_size = 0x02000000; -static struct mtd_partition jornada_partitions[] = { - { - name: "Jornada boot firmware", - size: 0x00040000, - offset: 0, - mask_flags: MTD_WRITEABLE, /* force read-only */ - }, { - name: "Jornada root jffs2", - size: MTDPART_SIZ_FULL, - offset: 0x00040000, - } -}; -#endif - - -static struct mtd_partition *parsed_parts; -static struct mtd_info *mymtd; - -static unsigned long cs_phys[] = { -#ifdef CONFIG_ARCH_SA1100 - SA1100_CS0_PHYS, - SA1100_CS1_PHYS, - SA1100_CS2_PHYS, - SA1100_CS3_PHYS, - SA1100_CS4_PHYS, - SA1100_CS5_PHYS, -#else - PXA_CS0_PHYS, - PXA_CS1_PHYS, - PXA_CS2_PHYS, - PXA_CS3_PHYS, - PXA_CS4_PHYS, - PXA_CS5_PHYS, -#endif -}; - -static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL }; - -static int __init h1900_special_case(void); - -static int __init ipaq_mtd_init(void) -{ - struct mtd_partition *parts = NULL; - int nb_parts = 0; - int parsed_nr_parts = 0; - const char *part_type; - int i; /* used when we have >1 flash chips */ - unsigned long tot_flashsize = 0; /* used when we have >1 flash chips */ - - /* Default flash bankwidth */ - // ipaq_map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4; - - if (machine_is_h1900()) - { - /* For our intents, the h1900 is not a real iPAQ, so we special-case it. */ - return h1900_special_case(); - } - - if (machine_is_h3100() || machine_is_h1900()) - for(i=0; i<MAX_IPAQ_CS; i++) - ipaq_map[i].bankwidth = 2; - else - for(i=0; i<MAX_IPAQ_CS; i++) - ipaq_map[i].bankwidth = 4; - - /* - * Static partition definition selection - */ - part_type = "static"; - - simple_map_init(&ipaq_map[0]); - simple_map_init(&ipaq_map[1]); - -#ifdef CONFIG_IPAQ_HANDHELD - if (machine_is_ipaq()) { - parts = h3xxx_partitions; - nb_parts = ARRAY_SIZE(h3xxx_partitions); - for(i=0; i<MAX_IPAQ_CS; i++) { - ipaq_map[i].size = h3xxx_max_flash_size; - ipaq_map[i].set_vpp = h3xxx_set_vpp; - ipaq_map[i].phys = cs_phys[i]; - ipaq_map[i].virt = ioremap(cs_phys[i], 0x04000000); - if (machine_is_h3100 () || machine_is_h1900()) - ipaq_map[i].bankwidth = 2; - } - if (machine_is_h3600()) { - /* No asset partition here */ - h3xxx_partitions[1].size += 0x40000; - nb_parts--; - } - } -#endif -#ifdef CONFIG_ARCH_H5400 - if (machine_is_h5400()) { - ipaq_map[0].size = 0x02000000; - ipaq_map[1].size = 0x02000000; - ipaq_map[1].phys = 0x02000000; - ipaq_map[1].virt = ipaq_map[0].virt + 0x02000000; - } -#endif -#ifdef CONFIG_ARCH_H1900 - if (machine_is_h1900()) { - ipaq_map[0].size = 0x00400000; - ipaq_map[1].size = 0x02000000; - ipaq_map[1].phys = 0x00080000; - ipaq_map[1].virt = ipaq_map[0].virt + 0x00080000; - } -#endif - -#ifdef CONFIG_SA1100_JORNADA56X - if (machine_is_jornada56x()) { - parts = jornada_partitions; - nb_parts = ARRAY_SIZE(jornada_partitions); - ipaq_map[0].size = jornada_max_flash_size; - ipaq_map[0].set_vpp = jornada56x_set_vpp; - ipaq_map[0].virt = (__u32)ioremap(0x0, 0x04000000); - } -#endif -#ifdef CONFIG_SA1100_JORNADA720 - if (machine_is_jornada720()) { - parts = jornada_partitions; - nb_parts = ARRAY_SIZE(jornada_partitions); - ipaq_map[0].size = jornada_max_flash_size; - ipaq_map[0].set_vpp = jornada720_set_vpp; - } -#endif - - - if (machine_is_ipaq()) { /* for iPAQs only */ - for(i=0; i<MAX_IPAQ_CS; i++) { - printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with CFI.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt); - my_sub_mtd[i] = do_map_probe("cfi_probe", &ipaq_map[i]); - if (!my_sub_mtd[i]) { - printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt); - my_sub_mtd[i] = do_map_probe("jedec_probe", &ipaq_map[i]); - } - if (!my_sub_mtd[i]) { - printk(KERN_NOTICE "iPAQ flash: failed to find flash.\n"); - if (i) - break; - else - return -ENXIO; - } else - printk(KERN_NOTICE "iPAQ flash: found %d bytes\n", my_sub_mtd[i]->size); - - /* do we really need this debugging? --joshua 20030703 */ - // printk("my_sub_mtd[%d]=%p\n", i, my_sub_mtd[i]); - my_sub_mtd[i]->owner = THIS_MODULE; - tot_flashsize += my_sub_mtd[i]->size; - } -#ifdef CONFIG_MTD_CONCAT - /* fix the asset location */ -# ifdef CONFIG_LAB - h3xxx_partitions[1].size = tot_flashsize - 0x40000 - 0x80000 /* extra big boot block */; -# else - h3xxx_partitions[1].size = tot_flashsize - 2 * 0x40000; -# endif - h3xxx_partitions[2].offset = tot_flashsize - 0x40000; - /* and concat the devices */ - mymtd = mtd_concat_create(&my_sub_mtd[0], i, - "ipaq"); - if (!mymtd) { - printk("Cannot create iPAQ concat device\n"); - return -ENXIO; - } -#else - mymtd = my_sub_mtd[0]; - - /* - *In the very near future, command line partition parsing - * will use the device name as 'mtd-id' instead of a value - * passed to the parse_cmdline_partitions() routine. Since - * the bootldr says 'ipaq', make sure it continues to work. - */ - mymtd->name = "ipaq"; - - if ((machine_is_h3600())) { -# ifdef CONFIG_LAB - h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x80000; -# else - h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000; -# endif - nb_parts = 2; - } else { -# ifdef CONFIG_LAB - h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000 - 0x80000; /* extra big boot block */ -# else - h3xxx_partitions[1].size = my_sub_mtd[0]->size - 2*0x40000; -# endif - h3xxx_partitions[2].offset = my_sub_mtd[0]->size - 0x40000; - } - - if (my_sub_mtd[1]) { -# ifdef CONFIG_LAB - h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x80000; -# else - h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x40000; -# endif - h3xxx_partitions_bank2[1].offset = my_sub_mtd[1]->size - 0x40000; - } -#endif - } - else { - /* - * Now let's probe for the actual flash. Do it here since - * specific machine settings might have been set above. - */ - printk(KERN_NOTICE "IPAQ flash: probing %d-bit flash bus, window=%lx\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt); - mymtd = do_map_probe("cfi_probe", &ipaq_map[0]); - if (!mymtd) - return -ENXIO; - mymtd->owner = THIS_MODULE; - } - - - /* - * Dynamic partition selection stuff (might override the static ones) - */ - - i = parse_mtd_partitions(mymtd, part_probes, &parsed_parts, 0); - - if (i > 0) { - nb_parts = parsed_nr_parts = i; - parts = parsed_parts; - part_type = "dynamic"; - } - - if (!parts) { - printk(KERN_NOTICE "IPAQ flash: no partition info available, registering whole flash at once\n"); - add_mtd_device(mymtd); -#ifndef CONFIG_MTD_CONCAT - if (my_sub_mtd[1]) - add_mtd_device(my_sub_mtd[1]); -#endif - } else { - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - add_mtd_partitions(mymtd, parts, nb_parts); -#ifndef CONFIG_MTD_CONCAT - if (my_sub_mtd[1]) - add_mtd_partitions(my_sub_mtd[1], h3xxx_partitions_bank2, ARRAY_SIZE(h3xxx_partitions_bank2)); -#endif - } - - return 0; -} - -static void __exit ipaq_mtd_cleanup(void) -{ - int i; - - if (mymtd) { - del_mtd_partitions(mymtd); -#ifndef CONFIG_MTD_CONCAT - if (my_sub_mtd[1]) - del_mtd_partitions(my_sub_mtd[1]); -#endif - map_destroy(mymtd); -#ifdef CONFIG_MTD_CONCAT - for(i=0; i<MAX_IPAQ_CS; i++) -#else - for(i=1; i<MAX_IPAQ_CS; i++) -#endif - { - if (my_sub_mtd[i]) - map_destroy(my_sub_mtd[i]); - } - kfree(parsed_parts); - } -} - -static int __init h1900_special_case(void) -{ - /* The iPAQ h1900 is a special case - it has weird ROM. */ - simple_map_init(&ipaq_map[0]); - ipaq_map[0].size = 0x80000; - ipaq_map[0].set_vpp = h3xxx_set_vpp; - ipaq_map[0].phys = 0x0; - ipaq_map[0].virt = ioremap(0x0, 0x04000000); - ipaq_map[0].bankwidth = 2; - - printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt); - mymtd = do_map_probe("jedec_probe", &ipaq_map[0]); - if (!mymtd) - return -ENODEV; - add_mtd_device(mymtd); - printk(KERN_NOTICE "iPAQ flash: registered h1910 flash\n"); - - return 0; -} - -module_init(ipaq_mtd_init); -module_exit(ipaq_mtd_cleanup); - -MODULE_AUTHOR("Jamey Hicks"); -MODULE_DESCRIPTION("IPAQ CFI map driver"); -MODULE_LICENSE("MIT"); diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c index 7214b876feb..7b051529741 100644 --- a/drivers/mtd/maps/ixp4xx.c +++ b/drivers/mtd/maps/ixp4xx.c @@ -210,7 +210,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev) * not attempt to do a direct access on us. */ info->map.phys = NO_XIP; - info->map.size = dev->resource->end - dev->resource->start + 1; + info->map.size = resource_size(dev->resource); /* * We only support 16-bit accesses for now. If and when @@ -224,7 +224,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev) info->map.copy_from = ixp4xx_copy_from, info->res = request_mem_region(dev->resource->start, - dev->resource->end - dev->resource->start + 1, + resource_size(dev->resource), "IXP4XXFlash"); if (!info->res) { printk(KERN_ERR "IXP4XXFlash: Could not reserve memory region\n"); @@ -233,7 +233,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev) } info->map.virt = ioremap(dev->resource->start, - dev->resource->end - dev->resource->start + 1); + resource_size(dev->resource)); if (!info->map.virt) { printk(KERN_ERR "IXP4XXFlash: Failed to ioremap region\n"); err = -EIO; diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index 380648e9051..d9603f7f965 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -48,23 +48,22 @@ static int physmap_flash_remove(struct platform_device *dev) if (info->cmtd) { #ifdef CONFIG_MTD_PARTITIONS - if (info->nr_parts || physmap_data->nr_parts) + if (info->nr_parts || physmap_data->nr_parts) { del_mtd_partitions(info->cmtd); - else + + if (info->nr_parts) + kfree(info->parts); + } else { del_mtd_device(info->cmtd); + } #else del_mtd_device(info->cmtd); #endif - } -#ifdef CONFIG_MTD_PARTITIONS - if (info->nr_parts) - kfree(info->parts); -#endif - #ifdef CONFIG_MTD_CONCAT - if (info->cmtd != info->mtd[0]) - mtd_concat_destroy(info->cmtd); + if (info->cmtd != info->mtd[0]) + mtd_concat_destroy(info->cmtd); #endif + } for (i = 0; i < MAX_RESOURCES; i++) { if (info->mtd[i] != NULL) @@ -130,7 +129,7 @@ static int physmap_flash_probe(struct platform_device *dev) info->map[i].size); if (info->map[i].virt == NULL) { dev_err(&dev->dev, "Failed to ioremap flash region\n"); - err = EIO; + err = -EIO; goto err_out; } diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index d7a47574d21..f3af87e08ec 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -248,7 +248,7 @@ static void sa1100_destroy(struct sa_info *info, struct flash_platform_data *pla plat->exit(); } -static struct sa_info *__init +static struct sa_info *__devinit sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *plat) { struct sa_info *info; diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c index 1f73297e777..82afad0ddd7 100644 --- a/drivers/mtd/maps/vmu-flash.c +++ b/drivers/mtd/maps/vmu-flash.c @@ -612,16 +612,15 @@ static int __devinit vmu_connect(struct maple_device *mdev) test_flash_data = be32_to_cpu(mdev->devinfo.function); /* Need to count how many bits are set - to find out which - * function_data element has details of the memory card: - * using Brian Kernighan's/Peter Wegner's method */ - for (c = 0; test_flash_data; c++) - test_flash_data &= test_flash_data - 1; + * function_data element has details of the memory card + */ + c = hweight_long(test_flash_data); basic_flash_data = be32_to_cpu(mdev->devinfo.function_data[c - 1]); card = kmalloc(sizeof(struct memcard), GFP_KERNEL); if (!card) { - error = ENOMEM; + error = -ENOMEM; goto fail_nomem; } diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 64e2b379a35..c82e09bbc5f 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -84,9 +84,6 @@ static int mtd_blktrans_thread(void *arg) struct request_queue *rq = tr->blkcore_priv->rq; struct request *req = NULL; - /* we might get involved when memory gets low, so use PF_MEMALLOC */ - current->flags |= PF_MEMALLOC; - spin_lock_irq(rq->queue_lock); while (!kthread_should_stop()) { @@ -381,7 +378,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr) tr->blkcore_priv->thread = kthread_run(mtd_blktrans_thread, tr, "%sd", tr->name); if (IS_ERR(tr->blkcore_priv->thread)) { - int ret = PTR_ERR(tr->blkcore_priv->thread); + ret = PTR_ERR(tr->blkcore_priv->thread); blk_cleanup_queue(tr->blkcore_priv->rq); unregister_blkdev(tr->major, tr->name); kfree(tr->blkcore_priv); diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 467a4f177bf..c356c0a30c3 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -447,7 +447,7 @@ struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num) for (i=0; i< MAX_MTD_DEVICES; i++) if (mtd_table[i] == mtd) ret = mtd_table[i]; - } else if (num < MAX_MTD_DEVICES) { + } else if (num >= 0 && num < MAX_MTD_DEVICES) { ret = mtd_table[num]; if (mtd && mtd != ret) ret = NULL; diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 1060337c06d..a714ec48276 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -29,14 +29,34 @@ #include <linux/sched.h> #include <linux/wait.h> #include <linux/delay.h> -#include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/mtd/mtd.h> +#include <linux/kmsg_dump.h> + +/* Maximum MTD partition size */ +#define MTDOOPS_MAX_MTD_SIZE (8 * 1024 * 1024) #define MTDOOPS_KERNMSG_MAGIC 0x5d005d00 -#define OOPS_PAGE_SIZE 4096 +#define MTDOOPS_HEADER_SIZE 8 + +static unsigned long record_size = 4096; +module_param(record_size, ulong, 0400); +MODULE_PARM_DESC(record_size, + "record size for MTD OOPS pages in bytes (default 4096)"); + +static char mtddev[80]; +module_param_string(mtddev, mtddev, 80, 0400); +MODULE_PARM_DESC(mtddev, + "name or index number of the MTD device to use"); + +static int dump_oops = 1; +module_param(dump_oops, int, 0600); +MODULE_PARM_DESC(dump_oops, + "set to 1 to dump oopses, 0 to only dump panics (default 1)"); static struct mtdoops_context { + struct kmsg_dumper dump; + int mtd_index; struct work_struct work_erase; struct work_struct work_write; @@ -44,28 +64,43 @@ static struct mtdoops_context { int oops_pages; int nextpage; int nextcount; - char *name; + unsigned long *oops_page_used; void *oops_buf; - - /* writecount and disabling ready are spin lock protected */ - spinlock_t writecount_lock; - int ready; - int writecount; } oops_cxt; +static void mark_page_used(struct mtdoops_context *cxt, int page) +{ + set_bit(page, cxt->oops_page_used); +} + +static void mark_page_unused(struct mtdoops_context *cxt, int page) +{ + clear_bit(page, cxt->oops_page_used); +} + +static int page_is_used(struct mtdoops_context *cxt, int page) +{ + return test_bit(page, cxt->oops_page_used); +} + static void mtdoops_erase_callback(struct erase_info *done) { wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; wake_up(wait_q); } -static int mtdoops_erase_block(struct mtd_info *mtd, int offset) +static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) { + struct mtd_info *mtd = cxt->mtd; + u32 start_page_offset = mtd_div_by_eb(offset, mtd) * mtd->erasesize; + u32 start_page = start_page_offset / record_size; + u32 erase_pages = mtd->erasesize / record_size; struct erase_info erase; DECLARE_WAITQUEUE(wait, current); wait_queue_head_t wait_q; int ret; + int page; init_waitqueue_head(&wait_q); erase.mtd = mtd; @@ -81,25 +116,24 @@ static int mtdoops_erase_block(struct mtd_info *mtd, int offset) if (ret) { set_current_state(TASK_RUNNING); remove_wait_queue(&wait_q, &wait); - printk (KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] " - "on \"%s\" failed\n", - (unsigned long long)erase.addr, (unsigned long long)erase.len, mtd->name); + printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n", + (unsigned long long)erase.addr, + (unsigned long long)erase.len, mtddev); return ret; } schedule(); /* Wait for erase to finish. */ remove_wait_queue(&wait_q, &wait); + /* Mark pages as unused */ + for (page = start_page; page < start_page + erase_pages; page++) + mark_page_unused(cxt, page); + return 0; } static void mtdoops_inc_counter(struct mtdoops_context *cxt) { - struct mtd_info *mtd = cxt->mtd; - size_t retlen; - u32 count; - int ret; - cxt->nextpage++; if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; @@ -107,25 +141,13 @@ static void mtdoops_inc_counter(struct mtdoops_context *cxt) if (cxt->nextcount == 0xffffffff) cxt->nextcount = 0; - ret = mtd->read(mtd, cxt->nextpage * OOPS_PAGE_SIZE, 4, - &retlen, (u_char *) &count); - if ((retlen != 4) || ((ret < 0) && (ret != -EUCLEAN))) { - printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)" - ", err %d.\n", cxt->nextpage * OOPS_PAGE_SIZE, - retlen, ret); + if (page_is_used(cxt, cxt->nextpage)) { schedule_work(&cxt->work_erase); return; } - /* See if we need to erase the next block */ - if (count != 0xffffffff) { - schedule_work(&cxt->work_erase); - return; - } - - printk(KERN_DEBUG "mtdoops: Ready %d, %d (no erase)\n", - cxt->nextpage, cxt->nextcount); - cxt->ready = 1; + printk(KERN_DEBUG "mtdoops: ready %d, %d (no erase)\n", + cxt->nextpage, cxt->nextcount); } /* Scheduled work - when we can't proceed without erasing a block */ @@ -140,47 +162,47 @@ static void mtdoops_workfunc_erase(struct work_struct *work) if (!mtd) return; - mod = (cxt->nextpage * OOPS_PAGE_SIZE) % mtd->erasesize; + mod = (cxt->nextpage * record_size) % mtd->erasesize; if (mod != 0) { - cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / OOPS_PAGE_SIZE); + cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / record_size); if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; } while (mtd->block_isbad) { - ret = mtd->block_isbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + ret = mtd->block_isbad(mtd, cxt->nextpage * record_size); if (!ret) break; if (ret < 0) { - printk(KERN_ERR "mtdoops: block_isbad failed, aborting.\n"); + printk(KERN_ERR "mtdoops: block_isbad failed, aborting\n"); return; } badblock: - printk(KERN_WARNING "mtdoops: Bad block at %08x\n", - cxt->nextpage * OOPS_PAGE_SIZE); + printk(KERN_WARNING "mtdoops: bad block at %08lx\n", + cxt->nextpage * record_size); i++; - cxt->nextpage = cxt->nextpage + (mtd->erasesize / OOPS_PAGE_SIZE); + cxt->nextpage = cxt->nextpage + (mtd->erasesize / record_size); if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; - if (i == (cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE))) { - printk(KERN_ERR "mtdoops: All blocks bad!\n"); + if (i == cxt->oops_pages / (mtd->erasesize / record_size)) { + printk(KERN_ERR "mtdoops: all blocks bad!\n"); return; } } for (j = 0, ret = -1; (j < 3) && (ret < 0); j++) - ret = mtdoops_erase_block(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + ret = mtdoops_erase_block(cxt, cxt->nextpage * record_size); if (ret >= 0) { - printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount); - cxt->ready = 1; + printk(KERN_DEBUG "mtdoops: ready %d, %d\n", + cxt->nextpage, cxt->nextcount); return; } - if (mtd->block_markbad && (ret == -EIO)) { - ret = mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + if (mtd->block_markbad && ret == -EIO) { + ret = mtd->block_markbad(mtd, cxt->nextpage * record_size); if (ret < 0) { - printk(KERN_ERR "mtdoops: block_markbad failed, aborting.\n"); + printk(KERN_ERR "mtdoops: block_markbad failed, aborting\n"); return; } } @@ -191,36 +213,37 @@ static void mtdoops_write(struct mtdoops_context *cxt, int panic) { struct mtd_info *mtd = cxt->mtd; size_t retlen; + u32 *hdr; int ret; - if (cxt->writecount < OOPS_PAGE_SIZE) - memset(cxt->oops_buf + cxt->writecount, 0xff, - OOPS_PAGE_SIZE - cxt->writecount); + /* Add mtdoops header to the buffer */ + hdr = cxt->oops_buf; + hdr[0] = cxt->nextcount; + hdr[1] = MTDOOPS_KERNMSG_MAGIC; if (panic) - ret = mtd->panic_write(mtd, cxt->nextpage * OOPS_PAGE_SIZE, - OOPS_PAGE_SIZE, &retlen, cxt->oops_buf); + ret = mtd->panic_write(mtd, cxt->nextpage * record_size, + record_size, &retlen, cxt->oops_buf); else - ret = mtd->write(mtd, cxt->nextpage * OOPS_PAGE_SIZE, - OOPS_PAGE_SIZE, &retlen, cxt->oops_buf); - - cxt->writecount = 0; + ret = mtd->write(mtd, cxt->nextpage * record_size, + record_size, &retlen, cxt->oops_buf); - if ((retlen != OOPS_PAGE_SIZE) || (ret < 0)) - printk(KERN_ERR "mtdoops: Write failure at %d (%td of %d written), err %d.\n", - cxt->nextpage * OOPS_PAGE_SIZE, retlen, OOPS_PAGE_SIZE, ret); + if (retlen != record_size || ret < 0) + printk(KERN_ERR "mtdoops: write failure at %ld (%td of %ld written), error %d\n", + cxt->nextpage * record_size, retlen, record_size, ret); + mark_page_used(cxt, cxt->nextpage); + memset(cxt->oops_buf, 0xff, record_size); mtdoops_inc_counter(cxt); } - static void mtdoops_workfunc_write(struct work_struct *work) { struct mtdoops_context *cxt = container_of(work, struct mtdoops_context, work_write); mtdoops_write(cxt, 0); -} +} static void find_next_position(struct mtdoops_context *cxt) { @@ -230,28 +253,33 @@ static void find_next_position(struct mtdoops_context *cxt) size_t retlen; for (page = 0; page < cxt->oops_pages; page++) { - ret = mtd->read(mtd, page * OOPS_PAGE_SIZE, 8, &retlen, (u_char *) &count[0]); - if ((retlen != 8) || ((ret < 0) && (ret != -EUCLEAN))) { - printk(KERN_ERR "mtdoops: Read failure at %d (%td of 8 read)" - ", err %d.\n", page * OOPS_PAGE_SIZE, retlen, ret); + /* Assume the page is used */ + mark_page_used(cxt, page); + ret = mtd->read(mtd, page * record_size, MTDOOPS_HEADER_SIZE, + &retlen, (u_char *) &count[0]); + if (retlen != MTDOOPS_HEADER_SIZE || + (ret < 0 && ret != -EUCLEAN)) { + printk(KERN_ERR "mtdoops: read failure at %ld (%td of %d read), err %d\n", + page * record_size, retlen, + MTDOOPS_HEADER_SIZE, ret); continue; } - if (count[1] != MTDOOPS_KERNMSG_MAGIC) - continue; + if (count[0] == 0xffffffff && count[1] == 0xffffffff) + mark_page_unused(cxt, page); if (count[0] == 0xffffffff) continue; if (maxcount == 0xffffffff) { maxcount = count[0]; maxpos = page; - } else if ((count[0] < 0x40000000) && (maxcount > 0xc0000000)) { + } else if (count[0] < 0x40000000 && maxcount > 0xc0000000) { maxcount = count[0]; maxpos = page; - } else if ((count[0] > maxcount) && (count[0] < 0xc0000000)) { + } else if (count[0] > maxcount && count[0] < 0xc0000000) { maxcount = count[0]; maxpos = page; - } else if ((count[0] > maxcount) && (count[0] > 0xc0000000) - && (maxcount > 0x80000000)) { + } else if (count[0] > maxcount && count[0] > 0xc0000000 + && maxcount > 0x80000000) { maxcount = count[0]; maxpos = page; } @@ -269,187 +297,170 @@ static void find_next_position(struct mtdoops_context *cxt) mtdoops_inc_counter(cxt); } - -static void mtdoops_notify_add(struct mtd_info *mtd) +static void mtdoops_do_dump(struct kmsg_dumper *dumper, + enum kmsg_dump_reason reason, const char *s1, unsigned long l1, + const char *s2, unsigned long l2) { - struct mtdoops_context *cxt = &oops_cxt; + struct mtdoops_context *cxt = container_of(dumper, + struct mtdoops_context, dump); + unsigned long s1_start, s2_start; + unsigned long l1_cpy, l2_cpy; + char *dst; + + /* Only dump oopses if dump_oops is set */ + if (reason == KMSG_DUMP_OOPS && !dump_oops) + return; - if (cxt->name && !strcmp(mtd->name, cxt->name)) - cxt->mtd_index = mtd->index; + dst = cxt->oops_buf + MTDOOPS_HEADER_SIZE; /* Skip the header */ + l2_cpy = min(l2, record_size - MTDOOPS_HEADER_SIZE); + l1_cpy = min(l1, record_size - MTDOOPS_HEADER_SIZE - l2_cpy); - if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0) - return; + s2_start = l2 - l2_cpy; + s1_start = l1 - l1_cpy; - if (mtd->size < (mtd->erasesize * 2)) { - printk(KERN_ERR "MTD partition %d not big enough for mtdoops\n", - mtd->index); - return; - } + memcpy(dst, s1 + s1_start, l1_cpy); + memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy); - if (mtd->erasesize < OOPS_PAGE_SIZE) { - printk(KERN_ERR "Eraseblock size of MTD partition %d too small\n", - mtd->index); + /* Panics must be written immediately */ + if (reason == KMSG_DUMP_PANIC) { + if (!cxt->mtd->panic_write) + printk(KERN_ERR "mtdoops: Cannot write from panic without panic_write\n"); + else + mtdoops_write(cxt, 1); return; } - cxt->mtd = mtd; - if (mtd->size > INT_MAX) - cxt->oops_pages = INT_MAX / OOPS_PAGE_SIZE; - else - cxt->oops_pages = (int)mtd->size / OOPS_PAGE_SIZE; - - find_next_position(cxt); - - printk(KERN_INFO "mtdoops: Attached to MTD device %d\n", mtd->index); + /* For other cases, schedule work to write it "nicely" */ + schedule_work(&cxt->work_write); } -static void mtdoops_notify_remove(struct mtd_info *mtd) +static void mtdoops_notify_add(struct mtd_info *mtd) { struct mtdoops_context *cxt = &oops_cxt; + u64 mtdoops_pages = div_u64(mtd->size, record_size); + int err; - if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0) - return; - - cxt->mtd = NULL; - flush_scheduled_work(); -} - -static void mtdoops_console_sync(void) -{ - struct mtdoops_context *cxt = &oops_cxt; - struct mtd_info *mtd = cxt->mtd; - unsigned long flags; + if (!strcmp(mtd->name, mtddev)) + cxt->mtd_index = mtd->index; - if (!cxt->ready || !mtd || cxt->writecount == 0) + if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0) return; - /* - * Once ready is 0 and we've held the lock no further writes to the - * buffer will happen - */ - spin_lock_irqsave(&cxt->writecount_lock, flags); - if (!cxt->ready) { - spin_unlock_irqrestore(&cxt->writecount_lock, flags); + if (mtd->size < mtd->erasesize * 2) { + printk(KERN_ERR "mtdoops: MTD partition %d not big enough for mtdoops\n", + mtd->index); return; } - cxt->ready = 0; - spin_unlock_irqrestore(&cxt->writecount_lock, flags); - - if (mtd->panic_write && in_interrupt()) - /* Interrupt context, we're going to panic so try and log */ - mtdoops_write(cxt, 1); - else - schedule_work(&cxt->work_write); -} - -static void -mtdoops_console_write(struct console *co, const char *s, unsigned int count) -{ - struct mtdoops_context *cxt = co->data; - struct mtd_info *mtd = cxt->mtd; - unsigned long flags; - - if (!oops_in_progress) { - mtdoops_console_sync(); + if (mtd->erasesize < record_size) { + printk(KERN_ERR "mtdoops: eraseblock size of MTD partition %d too small\n", + mtd->index); return; } - - if (!cxt->ready || !mtd) + if (mtd->size > MTDOOPS_MAX_MTD_SIZE) { + printk(KERN_ERR "mtdoops: mtd%d is too large (limit is %d MiB)\n", + mtd->index, MTDOOPS_MAX_MTD_SIZE / 1024 / 1024); return; + } - /* Locking on writecount ensures sequential writes to the buffer */ - spin_lock_irqsave(&cxt->writecount_lock, flags); - - /* Check ready status didn't change whilst waiting for the lock */ - if (!cxt->ready) { - spin_unlock_irqrestore(&cxt->writecount_lock, flags); + /* oops_page_used is a bit field */ + cxt->oops_page_used = vmalloc(DIV_ROUND_UP(mtdoops_pages, + BITS_PER_LONG)); + if (!cxt->oops_page_used) { + printk(KERN_ERR "mtdoops: could not allocate page array\n"); return; } - if (cxt->writecount == 0) { - u32 *stamp = cxt->oops_buf; - *stamp++ = cxt->nextcount; - *stamp = MTDOOPS_KERNMSG_MAGIC; - cxt->writecount = 8; + cxt->dump.dump = mtdoops_do_dump; + err = kmsg_dump_register(&cxt->dump); + if (err) { + printk(KERN_ERR "mtdoops: registering kmsg dumper failed, error %d\n", err); + vfree(cxt->oops_page_used); + cxt->oops_page_used = NULL; + return; } - if ((count + cxt->writecount) > OOPS_PAGE_SIZE) - count = OOPS_PAGE_SIZE - cxt->writecount; - - memcpy(cxt->oops_buf + cxt->writecount, s, count); - cxt->writecount += count; - - spin_unlock_irqrestore(&cxt->writecount_lock, flags); - - if (cxt->writecount == OOPS_PAGE_SIZE) - mtdoops_console_sync(); + cxt->mtd = mtd; + cxt->oops_pages = (int)mtd->size / record_size; + find_next_position(cxt); + printk(KERN_INFO "mtdoops: Attached to MTD device %d\n", mtd->index); } -static int __init mtdoops_console_setup(struct console *co, char *options) +static void mtdoops_notify_remove(struct mtd_info *mtd) { - struct mtdoops_context *cxt = co->data; + struct mtdoops_context *cxt = &oops_cxt; - if (cxt->mtd_index != -1 || cxt->name) - return -EBUSY; - if (options) { - cxt->name = kstrdup(options, GFP_KERNEL); - return 0; - } - if (co->index == -1) - return -EINVAL; + if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0) + return; - cxt->mtd_index = co->index; - return 0; + if (kmsg_dump_unregister(&cxt->dump) < 0) + printk(KERN_WARNING "mtdoops: could not unregister kmsg_dumper\n"); + + cxt->mtd = NULL; + flush_scheduled_work(); } + static struct mtd_notifier mtdoops_notifier = { .add = mtdoops_notify_add, .remove = mtdoops_notify_remove, }; -static struct console mtdoops_console = { - .name = "ttyMTD", - .write = mtdoops_console_write, - .setup = mtdoops_console_setup, - .unblank = mtdoops_console_sync, - .index = -1, - .data = &oops_cxt, -}; - -static int __init mtdoops_console_init(void) +static int __init mtdoops_init(void) { struct mtdoops_context *cxt = &oops_cxt; + int mtd_index; + char *endp; + if (strlen(mtddev) == 0) { + printk(KERN_ERR "mtdoops: mtd device (mtddev=name/number) must be supplied\n"); + return -EINVAL; + } + if ((record_size & 4095) != 0) { + printk(KERN_ERR "mtdoops: record_size must be a multiple of 4096\n"); + return -EINVAL; + } + if (record_size < 4096) { + printk(KERN_ERR "mtdoops: record_size must be over 4096 bytes\n"); + return -EINVAL; + } + + /* Setup the MTD device to use */ cxt->mtd_index = -1; - cxt->oops_buf = vmalloc(OOPS_PAGE_SIZE); - spin_lock_init(&cxt->writecount_lock); + mtd_index = simple_strtoul(mtddev, &endp, 0); + if (*endp == '\0') + cxt->mtd_index = mtd_index; + if (cxt->mtd_index > MAX_MTD_DEVICES) { + printk(KERN_ERR "mtdoops: invalid mtd device number (%u) given\n", + mtd_index); + return -EINVAL; + } + cxt->oops_buf = vmalloc(record_size); if (!cxt->oops_buf) { - printk(KERN_ERR "Failed to allocate mtdoops buffer workspace\n"); + printk(KERN_ERR "mtdoops: failed to allocate buffer workspace\n"); return -ENOMEM; } + memset(cxt->oops_buf, 0xff, record_size); INIT_WORK(&cxt->work_erase, mtdoops_workfunc_erase); INIT_WORK(&cxt->work_write, mtdoops_workfunc_write); - register_console(&mtdoops_console); register_mtd_user(&mtdoops_notifier); return 0; } -static void __exit mtdoops_console_exit(void) +static void __exit mtdoops_exit(void) { struct mtdoops_context *cxt = &oops_cxt; unregister_mtd_user(&mtdoops_notifier); - unregister_console(&mtdoops_console); - kfree(cxt->name); vfree(cxt->oops_buf); + vfree(cxt->oops_page_used); } -subsys_initcall(mtdoops_console_init); -module_exit(mtdoops_console_exit); +module_init(mtdoops_init); +module_exit(mtdoops_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>"); diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 0e35e1aefd2..7678538344f 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -201,6 +201,22 @@ config MTD_NAND_S3C2410_CLKSTOP when the is NAND chip selected or released, but will save approximately 5mA of power when there is nothing happening. +config MTD_NAND_BCM_UMI + tristate "NAND Flash support for BCM Reference Boards" + depends on ARCH_BCMRING && MTD_NAND + help + This enables the NAND flash controller on the BCM UMI block. + + No board specfic support is done by this driver, each board + must advertise a platform_device for the driver to attach. + +config MTD_NAND_BCM_UMI_HWCS + bool "BCM UMI NAND Hardware CS" + depends on MTD_NAND_BCM_UMI + help + Enable the use of the BCM UMI block's internal CS using NAND. + This should only be used if you know the external NAND CS can toggle. + config MTD_NAND_DISKONCHIP tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)" depends on EXPERIMENTAL diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 6950d3dabf1..460a1f39a8d 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -42,5 +42,6 @@ obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o obj-$(CONFIG_MTD_NAND_W90P910) += w90p910_nand.o obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o +obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c index 6d9649159a1..2d6773281fd 100644 --- a/drivers/mtd/nand/alauda.c +++ b/drivers/mtd/nand/alauda.c @@ -372,15 +372,6 @@ static int alauda_read_oob(struct mtd_info *mtd, loff_t from, void *oob) return __alauda_read_page(mtd, from, ignore_buf, oob); } -static int popcount8(u8 c) -{ - int ret = 0; - - for ( ; c; c>>=1) - ret += c & 1; - return ret; -} - static int alauda_isbad(struct mtd_info *mtd, loff_t ofs) { u8 oob[16]; @@ -391,7 +382,7 @@ static int alauda_isbad(struct mtd_info *mtd, loff_t ofs) return err; /* A block is marked bad if two or more bits are zero */ - return popcount8(oob[5]) >= 7 ? 0 : 1; + return hweight8(oob[5]) >= 7 ? 0 : 1; } static int alauda_bounce_read(struct mtd_info *mtd, loff_t from, size_t len, diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index f8e9975c86e..524e6c9e067 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -192,7 +192,6 @@ static int atmel_nand_calculate(struct mtd_info *mtd, { struct nand_chip *nand_chip = mtd->priv; struct atmel_nand_host *host = nand_chip->priv; - uint32_t *eccpos = nand_chip->ecc.layout->eccpos; unsigned int ecc_value; /* get the first 2 ECC bytes */ @@ -464,7 +463,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (host->board->det_pin) { if (gpio_get_value(host->board->det_pin)) { printk(KERN_INFO "No SmartMedia card inserted.\n"); - res = ENXIO; + res = -ENXIO; goto err_no_card; } } @@ -535,7 +534,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if ((!partitions) || (num_partitions == 0)) { printk(KERN_ERR "atmel_nand: No partitions defined, or unsupported device.\n"); - res = ENXIO; + res = -ENXIO; goto err_no_partitions; } diff --git a/drivers/mtd/nand/bcm_umi_bch.c b/drivers/mtd/nand/bcm_umi_bch.c new file mode 100644 index 00000000000..a930666d068 --- /dev/null +++ b/drivers/mtd/nand/bcm_umi_bch.c @@ -0,0 +1,213 @@ +/***************************************************************************** +* Copyright 2004 - 2009 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +/* ---- Include Files ---------------------------------------------------- */ +#include "nand_bcm_umi.h" + +/* ---- External Variable Declarations ----------------------------------- */ +/* ---- External Function Prototypes ------------------------------------- */ +/* ---- Public Variables ------------------------------------------------- */ +/* ---- Private Constants and Types -------------------------------------- */ + +/* ---- Private Function Prototypes -------------------------------------- */ +static int bcm_umi_bch_read_page_hwecc(struct mtd_info *mtd, + struct nand_chip *chip, uint8_t *buf, int page); +static void bcm_umi_bch_write_page_hwecc(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf); + +/* ---- Private Variables ------------------------------------------------ */ + +/* +** nand_hw_eccoob +** New oob placement block for use with hardware ecc generation. +*/ +static struct nand_ecclayout nand_hw_eccoob_512 = { + /* Reserve 5 for BI indicator */ + .oobfree = { +#if (NAND_ECC_NUM_BYTES > 3) + {.offset = 0, .length = 2} +#else + {.offset = 0, .length = 5}, + {.offset = 6, .length = 7} +#endif + } +}; + +/* +** We treat the OOB for a 2K page as if it were 4 512 byte oobs, +** except the BI is at byte 0. +*/ +static struct nand_ecclayout nand_hw_eccoob_2048 = { + /* Reserve 0 as BI indicator */ + .oobfree = { +#if (NAND_ECC_NUM_BYTES > 10) + {.offset = 1, .length = 2}, +#elif (NAND_ECC_NUM_BYTES > 7) + {.offset = 1, .length = 5}, + {.offset = 16, .length = 6}, + {.offset = 32, .length = 6}, + {.offset = 48, .length = 6} +#else + {.offset = 1, .length = 8}, + {.offset = 16, .length = 9}, + {.offset = 32, .length = 9}, + {.offset = 48, .length = 9} +#endif + } +}; + +/* We treat the OOB for a 4K page as if it were 8 512 byte oobs, + * except the BI is at byte 0. */ +static struct nand_ecclayout nand_hw_eccoob_4096 = { + /* Reserve 0 as BI indicator */ + .oobfree = { +#if (NAND_ECC_NUM_BYTES > 10) + {.offset = 1, .length = 2}, + {.offset = 16, .length = 3}, + {.offset = 32, .length = 3}, + {.offset = 48, .length = 3}, + {.offset = 64, .length = 3}, + {.offset = 80, .length = 3}, + {.offset = 96, .length = 3}, + {.offset = 112, .length = 3} +#else + {.offset = 1, .length = 5}, + {.offset = 16, .length = 6}, + {.offset = 32, .length = 6}, + {.offset = 48, .length = 6}, + {.offset = 64, .length = 6}, + {.offset = 80, .length = 6}, + {.offset = 96, .length = 6}, + {.offset = 112, .length = 6} +#endif + } +}; + +/* ---- Private Functions ------------------------------------------------ */ +/* ==== Public Functions ================================================= */ + +/**************************************************************************** +* +* bcm_umi_bch_read_page_hwecc - hardware ecc based page read function +* @mtd: mtd info structure +* @chip: nand chip info structure +* @buf: buffer to store read data +* +***************************************************************************/ +static int bcm_umi_bch_read_page_hwecc(struct mtd_info *mtd, + struct nand_chip *chip, uint8_t * buf, + int page) +{ + int sectorIdx = 0; + int eccsize = chip->ecc.size; + int eccsteps = chip->ecc.steps; + uint8_t *datap = buf; + uint8_t eccCalc[NAND_ECC_NUM_BYTES]; + int sectorOobSize = mtd->oobsize / eccsteps; + int stat; + + for (sectorIdx = 0; sectorIdx < eccsteps; + sectorIdx++, datap += eccsize) { + if (sectorIdx > 0) { + /* Seek to page location within sector */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, sectorIdx * eccsize, + -1); + } + + /* Enable hardware ECC before reading the buf */ + nand_bcm_umi_bch_enable_read_hwecc(); + + /* Read in data */ + bcm_umi_nand_read_buf(mtd, datap, eccsize); + + /* Pause hardware ECC after reading the buf */ + nand_bcm_umi_bch_pause_read_ecc_calc(); + + /* Read the OOB ECC */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, + mtd->writesize + sectorIdx * sectorOobSize, -1); + nand_bcm_umi_bch_read_oobEcc(mtd->writesize, eccCalc, + NAND_ECC_NUM_BYTES, + chip->oob_poi + + sectorIdx * sectorOobSize); + + /* Correct any ECC detected errors */ + stat = + nand_bcm_umi_bch_correct_page(datap, eccCalc, + NAND_ECC_NUM_BYTES); + + /* Update Stats */ + if (stat < 0) { +#if defined(NAND_BCM_UMI_DEBUG) + printk(KERN_WARNING "%s uncorr_err sectorIdx=%d\n", + __func__, sectorIdx); + printk(KERN_WARNING + "%s data %02x %02x %02x %02x " + "%02x %02x %02x %02x\n", + __func__, datap[0], datap[1], datap[2], datap[3], + datap[4], datap[5], datap[6], datap[7]); + printk(KERN_WARNING + "%s ecc %02x %02x %02x %02x " + "%02x %02x %02x %02x %02x %02x " + "%02x %02x %02x\n", + __func__, eccCalc[0], eccCalc[1], eccCalc[2], + eccCalc[3], eccCalc[4], eccCalc[5], eccCalc[6], + eccCalc[7], eccCalc[8], eccCalc[9], eccCalc[10], + eccCalc[11], eccCalc[12]); + BUG(); +#endif + mtd->ecc_stats.failed++; + } else { +#if defined(NAND_BCM_UMI_DEBUG) + if (stat > 0) { + printk(KERN_INFO + "%s %d correctable_errors detected\n", + __func__, stat); + } +#endif + mtd->ecc_stats.corrected += stat; + } + } + return 0; +} + +/**************************************************************************** +* +* bcm_umi_bch_write_page_hwecc - hardware ecc based page write function +* @mtd: mtd info structure +* @chip: nand chip info structure +* @buf: data buffer +* +***************************************************************************/ +static void bcm_umi_bch_write_page_hwecc(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf) +{ + int sectorIdx = 0; + int eccsize = chip->ecc.size; + int eccsteps = chip->ecc.steps; + const uint8_t *datap = buf; + uint8_t *oobp = chip->oob_poi; + int sectorOobSize = mtd->oobsize / eccsteps; + + for (sectorIdx = 0; sectorIdx < eccsteps; + sectorIdx++, datap += eccsize, oobp += sectorOobSize) { + /* Enable hardware ECC before writing the buf */ + nand_bcm_umi_bch_enable_write_hwecc(); + bcm_umi_nand_write_buf(mtd, datap, eccsize); + nand_bcm_umi_bch_write_oobEcc(mtd->writesize, oobp, + NAND_ECC_NUM_BYTES); + } + + bcm_umi_nand_write_buf(mtd, chip->oob_poi, mtd->oobsize); +} diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c new file mode 100644 index 00000000000..087bcd745bb --- /dev/null +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -0,0 +1,581 @@ +/***************************************************************************** +* Copyright 2004 - 2009 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +/* ---- Include Files ---------------------------------------------------- */ +#include <linux/version.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> + +#include <asm/mach-types.h> +#include <asm/system.h> + +#include <mach/reg_nand.h> +#include <mach/reg_umi.h> + +#include "nand_bcm_umi.h" + +#include <mach/memory_settings.h> + +#define USE_DMA 1 +#include <mach/dma.h> +#include <linux/dma-mapping.h> +#include <linux/completion.h> + +/* ---- External Variable Declarations ----------------------------------- */ +/* ---- External Function Prototypes ------------------------------------- */ +/* ---- Public Variables ------------------------------------------------- */ +/* ---- Private Constants and Types -------------------------------------- */ +static const __devinitconst char gBanner[] = KERN_INFO \ + "BCM UMI MTD NAND Driver: 1.00\n"; + +#ifdef CONFIG_MTD_PARTITIONS +const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + +#if NAND_ECC_BCH +static uint8_t scan_ff_pattern[] = { 0xff }; + +static struct nand_bbt_descr largepage_bbt = { + .options = 0, + .offs = 0, + .len = 1, + .pattern = scan_ff_pattern +}; +#endif + +/* +** Preallocate a buffer to avoid having to do this every dma operation. +** This is the size of the preallocated coherent DMA buffer. +*/ +#if USE_DMA +#define DMA_MIN_BUFLEN 512 +#define DMA_MAX_BUFLEN PAGE_SIZE +#define USE_DIRECT_IO(len) (((len) < DMA_MIN_BUFLEN) || \ + ((len) > DMA_MAX_BUFLEN)) + +/* + * The current NAND data space goes from 0x80001900 to 0x80001FFF, + * which is only 0x700 = 1792 bytes long. This is too small for 2K, 4K page + * size NAND flash. Need to break the DMA down to multiple 1Ks. + * + * Need to make sure REG_NAND_DATA_PADDR + DMA_MAX_LEN < 0x80002000 + */ +#define DMA_MAX_LEN 1024 + +#else /* !USE_DMA */ +#define DMA_MIN_BUFLEN 0 +#define DMA_MAX_BUFLEN 0 +#define USE_DIRECT_IO(len) 1 +#endif +/* ---- Private Function Prototypes -------------------------------------- */ +static void bcm_umi_nand_read_buf(struct mtd_info *mtd, u_char * buf, int len); +static void bcm_umi_nand_write_buf(struct mtd_info *mtd, const u_char * buf, + int len); + +/* ---- Private Variables ------------------------------------------------ */ +static struct mtd_info *board_mtd; +static void __iomem *bcm_umi_io_base; +static void *virtPtr; +static dma_addr_t physPtr; +static struct completion nand_comp; + +/* ---- Private Functions ------------------------------------------------ */ +#if NAND_ECC_BCH +#include "bcm_umi_bch.c" +#else +#include "bcm_umi_hamming.c" +#endif + +#if USE_DMA + +/* Handler called when the DMA finishes. */ +static void nand_dma_handler(DMA_Device_t dev, int reason, void *userData) +{ + complete(&nand_comp); +} + +static int nand_dma_init(void) +{ + int rc; + + rc = dma_set_device_handler(DMA_DEVICE_NAND_MEM_TO_MEM, + nand_dma_handler, NULL); + if (rc != 0) { + printk(KERN_ERR "dma_set_device_handler failed: %d\n", rc); + return rc; + } + + virtPtr = + dma_alloc_coherent(NULL, DMA_MAX_BUFLEN, &physPtr, GFP_KERNEL); + if (virtPtr == NULL) { + printk(KERN_ERR "NAND - Failed to allocate memory for DMA buffer\n"); + return -ENOMEM; + } + + return 0; +} + +static void nand_dma_term(void) +{ + if (virtPtr != NULL) + dma_free_coherent(NULL, DMA_MAX_BUFLEN, virtPtr, physPtr); +} + +static void nand_dma_read(void *buf, int len) +{ + int offset = 0; + int tmp_len = 0; + int len_left = len; + DMA_Handle_t hndl; + + if (virtPtr == NULL) + panic("nand_dma_read: virtPtr == NULL\n"); + + if ((void *)physPtr == NULL) + panic("nand_dma_read: physPtr == NULL\n"); + + hndl = dma_request_channel(DMA_DEVICE_NAND_MEM_TO_MEM); + if (hndl < 0) { + printk(KERN_ERR + "nand_dma_read: unable to allocate dma channel: %d\n", + (int)hndl); + panic("\n"); + } + + while (len_left > 0) { + if (len_left > DMA_MAX_LEN) { + tmp_len = DMA_MAX_LEN; + len_left -= DMA_MAX_LEN; + } else { + tmp_len = len_left; + len_left = 0; + } + + init_completion(&nand_comp); + dma_transfer_mem_to_mem(hndl, REG_NAND_DATA_PADDR, + physPtr + offset, tmp_len); + wait_for_completion(&nand_comp); + + offset += tmp_len; + } + + dma_free_channel(hndl); + + if (buf != NULL) + memcpy(buf, virtPtr, len); +} + +static void nand_dma_write(const void *buf, int len) +{ + int offset = 0; + int tmp_len = 0; + int len_left = len; + DMA_Handle_t hndl; + + if (buf == NULL) + panic("nand_dma_write: buf == NULL\n"); + + if (virtPtr == NULL) + panic("nand_dma_write: virtPtr == NULL\n"); + + if ((void *)physPtr == NULL) + panic("nand_dma_write: physPtr == NULL\n"); + + memcpy(virtPtr, buf, len); + + + hndl = dma_request_channel(DMA_DEVICE_NAND_MEM_TO_MEM); + if (hndl < 0) { + printk(KERN_ERR + "nand_dma_write: unable to allocate dma channel: %d\n", + (int)hndl); + panic("\n"); + } + + while (len_left > 0) { + if (len_left > DMA_MAX_LEN) { + tmp_len = DMA_MAX_LEN; + len_left -= DMA_MAX_LEN; + } else { + tmp_len = len_left; + len_left = 0; + } + + init_completion(&nand_comp); + dma_transfer_mem_to_mem(hndl, physPtr + offset, + REG_NAND_DATA_PADDR, tmp_len); + wait_for_completion(&nand_comp); + + offset += tmp_len; + } + + dma_free_channel(hndl); +} + +#endif + +static int nand_dev_ready(struct mtd_info *mtd) +{ + return nand_bcm_umi_dev_ready(); +} + +/**************************************************************************** +* +* bcm_umi_nand_inithw +* +* This routine does the necessary hardware (board-specific) +* initializations. This includes setting up the timings, etc. +* +***************************************************************************/ +int bcm_umi_nand_inithw(void) +{ + /* Configure nand timing parameters */ + REG_UMI_NAND_TCR &= ~0x7ffff; + REG_UMI_NAND_TCR |= HW_CFG_NAND_TCR; + +#if !defined(CONFIG_MTD_NAND_BCM_UMI_HWCS) + /* enable software control of CS */ + REG_UMI_NAND_TCR |= REG_UMI_NAND_TCR_CS_SWCTRL; +#endif + + /* keep NAND chip select asserted */ + REG_UMI_NAND_RCSR |= REG_UMI_NAND_RCSR_CS_ASSERTED; + + REG_UMI_NAND_TCR &= ~REG_UMI_NAND_TCR_WORD16; + /* enable writes to flash */ + REG_UMI_MMD_ICR |= REG_UMI_MMD_ICR_FLASH_WP; + + writel(NAND_CMD_RESET, bcm_umi_io_base + REG_NAND_CMD_OFFSET); + nand_bcm_umi_wait_till_ready(); + +#if NAND_ECC_BCH + nand_bcm_umi_bch_config_ecc(NAND_ECC_NUM_BYTES); +#endif + + return 0; +} + +/* Used to turn latch the proper register for access. */ +static void bcm_umi_nand_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + /* send command to hardware */ + struct nand_chip *chip = mtd->priv; + if (ctrl & NAND_CTRL_CHANGE) { + if (ctrl & NAND_CLE) { + chip->IO_ADDR_W = bcm_umi_io_base + REG_NAND_CMD_OFFSET; + goto CMD; + } + if (ctrl & NAND_ALE) { + chip->IO_ADDR_W = + bcm_umi_io_base + REG_NAND_ADDR_OFFSET; + goto CMD; + } + chip->IO_ADDR_W = bcm_umi_io_base + REG_NAND_DATA8_OFFSET; + } + +CMD: + /* Send command to chip directly */ + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W); +} + +static void bcm_umi_nand_write_buf(struct mtd_info *mtd, const u_char * buf, + int len) +{ + if (USE_DIRECT_IO(len)) { + /* Do it the old way if the buffer is small or too large. + * Probably quicker than starting and checking dma. */ + int i; + struct nand_chip *this = mtd->priv; + + for (i = 0; i < len; i++) + writeb(buf[i], this->IO_ADDR_W); + } +#if USE_DMA + else + nand_dma_write(buf, len); +#endif +} + +static void bcm_umi_nand_read_buf(struct mtd_info *mtd, u_char * buf, int len) +{ + if (USE_DIRECT_IO(len)) { + int i; + struct nand_chip *this = mtd->priv; + + for (i = 0; i < len; i++) + buf[i] = readb(this->IO_ADDR_R); + } +#if USE_DMA + else + nand_dma_read(buf, len); +#endif +} + +static uint8_t readbackbuf[NAND_MAX_PAGESIZE]; +static int bcm_umi_nand_verify_buf(struct mtd_info *mtd, const u_char * buf, + int len) +{ + /* + * Try to readback page with ECC correction. This is necessary + * for MLC parts which may have permanently stuck bits. + */ + struct nand_chip *chip = mtd->priv; + int ret = chip->ecc.read_page(mtd, chip, readbackbuf, 0); + if (ret < 0) + return -EFAULT; + else { + if (memcmp(readbackbuf, buf, len) == 0) + return 0; + + return -EFAULT; + } + return 0; +} + +static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) +{ + struct nand_chip *this; + struct resource *r; + int err = 0; + + printk(gBanner); + + /* Allocate memory for MTD device structure and private data */ + board_mtd = + kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), + GFP_KERNEL); + if (!board_mtd) { + printk(KERN_WARNING + "Unable to allocate NAND MTD device structure.\n"); + return -ENOMEM; + } + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (!r) + return -ENXIO; + + /* map physical adress */ + bcm_umi_io_base = ioremap(r->start, r->end - r->start + 1); + + if (!bcm_umi_io_base) { + printk(KERN_ERR "ioremap to access BCM UMI NAND chip failed\n"); + kfree(board_mtd); + return -EIO; + } + + /* Get pointer to private data */ + this = (struct nand_chip *)(&board_mtd[1]); + + /* Initialize structures */ + memset((char *)board_mtd, 0, sizeof(struct mtd_info)); + memset((char *)this, 0, sizeof(struct nand_chip)); + + /* Link the private data with the MTD structure */ + board_mtd->priv = this; + + /* Initialize the NAND hardware. */ + if (bcm_umi_nand_inithw() < 0) { + printk(KERN_ERR "BCM UMI NAND chip could not be initialized\n"); + iounmap(bcm_umi_io_base); + kfree(board_mtd); + return -EIO; + } + + /* Set address of NAND IO lines */ + this->IO_ADDR_W = bcm_umi_io_base + REG_NAND_DATA8_OFFSET; + this->IO_ADDR_R = bcm_umi_io_base + REG_NAND_DATA8_OFFSET; + + /* Set command delay time, see datasheet for correct value */ + this->chip_delay = 0; + /* Assign the device ready function, if available */ + this->dev_ready = nand_dev_ready; + this->options = 0; + + this->write_buf = bcm_umi_nand_write_buf; + this->read_buf = bcm_umi_nand_read_buf; + this->verify_buf = bcm_umi_nand_verify_buf; + + this->cmd_ctrl = bcm_umi_nand_hwcontrol; + this->ecc.mode = NAND_ECC_HW; + this->ecc.size = 512; + this->ecc.bytes = NAND_ECC_NUM_BYTES; +#if NAND_ECC_BCH + this->ecc.read_page = bcm_umi_bch_read_page_hwecc; + this->ecc.write_page = bcm_umi_bch_write_page_hwecc; +#else + this->ecc.correct = nand_correct_data512; + this->ecc.calculate = bcm_umi_hamming_get_hw_ecc; + this->ecc.hwctl = bcm_umi_hamming_enable_hwecc; +#endif + +#if USE_DMA + err = nand_dma_init(); + if (err != 0) + return err; +#endif + + /* Figure out the size of the device that we have. + * We need to do this to figure out which ECC + * layout we'll be using. + */ + + err = nand_scan_ident(board_mtd, 1); + if (err) { + printk(KERN_ERR "nand_scan failed: %d\n", err); + iounmap(bcm_umi_io_base); + kfree(board_mtd); + return err; + } + + /* Now that we know the nand size, we can setup the ECC layout */ + + switch (board_mtd->writesize) { /* writesize is the pagesize */ + case 4096: + this->ecc.layout = &nand_hw_eccoob_4096; + break; + case 2048: + this->ecc.layout = &nand_hw_eccoob_2048; + break; + case 512: + this->ecc.layout = &nand_hw_eccoob_512; + break; + default: + { + printk(KERN_ERR "NAND - Unrecognized pagesize: %d\n", + board_mtd->writesize); + return -EINVAL; + } + } + +#if NAND_ECC_BCH + if (board_mtd->writesize > 512) { + if (this->options & NAND_USE_FLASH_BBT) + largepage_bbt.options = NAND_BBT_SCAN2NDPAGE; + this->badblock_pattern = &largepage_bbt; + } +#endif + + /* Now finish off the scan, now that ecc.layout has been initialized. */ + + err = nand_scan_tail(board_mtd); + if (err) { + printk(KERN_ERR "nand_scan failed: %d\n", err); + iounmap(bcm_umi_io_base); + kfree(board_mtd); + return err; + } + + /* Register the partitions */ + { + int nr_partitions; + struct mtd_partition *partition_info; + + board_mtd->name = "bcm_umi-nand"; + nr_partitions = + parse_mtd_partitions(board_mtd, part_probes, + &partition_info, 0); + + if (nr_partitions <= 0) { + printk(KERN_ERR "BCM UMI NAND: Too few partitions - %d\n", + nr_partitions); + iounmap(bcm_umi_io_base); + kfree(board_mtd); + return -EIO; + } + add_mtd_partitions(board_mtd, partition_info, nr_partitions); + } + + /* Return happy */ + return 0; +} + +static int bcm_umi_nand_remove(struct platform_device *pdev) +{ +#if USE_DMA + nand_dma_term(); +#endif + + /* Release resources, unregister device */ + nand_release(board_mtd); + + /* unmap physical adress */ + iounmap(bcm_umi_io_base); + + /* Free the MTD device structure */ + kfree(board_mtd); + + return 0; +} + +#ifdef CONFIG_PM +static int bcm_umi_nand_suspend(struct platform_device *pdev, + pm_message_t state) +{ + printk(KERN_ERR "MTD NAND suspend is being called\n"); + return 0; +} + +static int bcm_umi_nand_resume(struct platform_device *pdev) +{ + printk(KERN_ERR "MTD NAND resume is being called\n"); + return 0; +} +#else +#define bcm_umi_nand_suspend NULL +#define bcm_umi_nand_resume NULL +#endif + +static struct platform_driver nand_driver = { + .driver = { + .name = "bcm-nand", + .owner = THIS_MODULE, + }, + .probe = bcm_umi_nand_probe, + .remove = bcm_umi_nand_remove, + .suspend = bcm_umi_nand_suspend, + .resume = bcm_umi_nand_resume, +}; + +static int __init nand_init(void) +{ + return platform_driver_register(&nand_driver); +} + +static void __exit nand_exit(void) +{ + platform_driver_unregister(&nand_driver); +} + +module_init(nand_init); +module_exit(nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Broadcom"); +MODULE_DESCRIPTION("BCM UMI MTD NAND driver"); diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index f13f5b9afaf..fe3eba87de4 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -591,6 +591,8 @@ static int __init nand_davinci_probe(struct platform_device *pdev) /* options such as NAND_USE_FLASH_BBT or 16-bit widths */ info->chip.options = pdata->options; + info->chip.bbt_td = pdata->bbt_td; + info->chip.bbt_md = pdata->bbt_md; info->ioaddr = (uint32_t __force) vaddr; @@ -599,7 +601,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev) info->mask_chipsel = pdata->mask_chipsel; /* use nandboot-capable ALE/CLE masks by default */ - info->mask_ale = pdata->mask_cle ? : MASK_ALE; + info->mask_ale = pdata->mask_ale ? : MASK_ALE; info->mask_cle = pdata->mask_cle ? : MASK_CLE; /* Set address of hardware control function */ diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c index 72446fb48d4..af6a6a5399e 100644 --- a/drivers/mtd/nand/excite_nandflash.c +++ b/drivers/mtd/nand/excite_nandflash.c @@ -128,7 +128,7 @@ static int excite_nand_devready(struct mtd_info *mtd) * The binding to the mtd and all allocated * resources are released. */ -static int __exit excite_nand_remove(struct platform_device *dev) +static int __devexit excite_nand_remove(struct platform_device *dev) { struct excite_nand_drvdata * const this = platform_get_drvdata(dev); diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index ddd37d2554e..ae30fb6eed9 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -237,12 +237,15 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) ctrl->use_mdr = 0; - dev_vdbg(ctrl->dev, - "fsl_elbc_run_command: stat=%08x mdr=%08x fmr=%08x\n", - ctrl->status, ctrl->mdr, in_be32(&lbc->fmr)); + if (ctrl->status != LTESR_CC) { + dev_info(ctrl->dev, + "command failed: fir %x fcr %x status %x mdr %x\n", + in_be32(&lbc->fir), in_be32(&lbc->fcr), + ctrl->status, ctrl->mdr); + return -EIO; + } - /* returns 0 on success otherwise non-zero) */ - return ctrl->status == LTESR_CC ? 0 : -EIO; + return 0; } static void fsl_elbc_do_read(struct nand_chip *chip, int oob) @@ -253,17 +256,17 @@ static void fsl_elbc_do_read(struct nand_chip *chip, int oob) if (priv->page_size) { out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | + (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_CA << FIR_OP1_SHIFT) | (FIR_OP_PA << FIR_OP2_SHIFT) | - (FIR_OP_CW1 << FIR_OP3_SHIFT) | + (FIR_OP_CM1 << FIR_OP3_SHIFT) | (FIR_OP_RBW << FIR_OP4_SHIFT)); out_be32(&lbc->fcr, (NAND_CMD_READ0 << FCR_CMD0_SHIFT) | (NAND_CMD_READSTART << FCR_CMD1_SHIFT)); } else { out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | + (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_CA << FIR_OP1_SHIFT) | (FIR_OP_PA << FIR_OP2_SHIFT) | (FIR_OP_RBW << FIR_OP3_SHIFT)); @@ -332,7 +335,7 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, case NAND_CMD_READID: dev_vdbg(ctrl->dev, "fsl_elbc_cmdfunc: NAND_CMD_READID.\n"); - out_be32(&lbc->fir, (FIR_OP_CW0 << FIR_OP0_SHIFT) | + out_be32(&lbc->fir, (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_UA << FIR_OP1_SHIFT) | (FIR_OP_RBW << FIR_OP2_SHIFT)); out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT); @@ -359,16 +362,20 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, dev_vdbg(ctrl->dev, "fsl_elbc_cmdfunc: NAND_CMD_ERASE2.\n"); out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | + (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_PA << FIR_OP1_SHIFT) | - (FIR_OP_CM1 << FIR_OP2_SHIFT)); + (FIR_OP_CM2 << FIR_OP2_SHIFT) | + (FIR_OP_CW1 << FIR_OP3_SHIFT) | + (FIR_OP_RS << FIR_OP4_SHIFT)); out_be32(&lbc->fcr, (NAND_CMD_ERASE1 << FCR_CMD0_SHIFT) | - (NAND_CMD_ERASE2 << FCR_CMD1_SHIFT)); + (NAND_CMD_STATUS << FCR_CMD1_SHIFT) | + (NAND_CMD_ERASE2 << FCR_CMD2_SHIFT)); out_be32(&lbc->fbcr, 0); ctrl->read_bytes = 0; + ctrl->use_mdr = 1; fsl_elbc_run_command(mtd); return; @@ -383,40 +390,41 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, ctrl->column = column; ctrl->oob = 0; + ctrl->use_mdr = 1; - if (priv->page_size) { - fcr = (NAND_CMD_SEQIN << FCR_CMD0_SHIFT) | - (NAND_CMD_PAGEPROG << FCR_CMD1_SHIFT); + fcr = (NAND_CMD_STATUS << FCR_CMD1_SHIFT) | + (NAND_CMD_SEQIN << FCR_CMD2_SHIFT) | + (NAND_CMD_PAGEPROG << FCR_CMD3_SHIFT); + if (priv->page_size) { out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | + (FIR_OP_CM2 << FIR_OP0_SHIFT) | (FIR_OP_CA << FIR_OP1_SHIFT) | (FIR_OP_PA << FIR_OP2_SHIFT) | (FIR_OP_WB << FIR_OP3_SHIFT) | - (FIR_OP_CW1 << FIR_OP4_SHIFT)); + (FIR_OP_CM3 << FIR_OP4_SHIFT) | + (FIR_OP_CW1 << FIR_OP5_SHIFT) | + (FIR_OP_RS << FIR_OP6_SHIFT)); } else { - fcr = (NAND_CMD_PAGEPROG << FCR_CMD1_SHIFT) | - (NAND_CMD_SEQIN << FCR_CMD2_SHIFT); - out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | + (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_CM2 << FIR_OP1_SHIFT) | (FIR_OP_CA << FIR_OP2_SHIFT) | (FIR_OP_PA << FIR_OP3_SHIFT) | (FIR_OP_WB << FIR_OP4_SHIFT) | - (FIR_OP_CW1 << FIR_OP5_SHIFT)); + (FIR_OP_CM3 << FIR_OP5_SHIFT) | + (FIR_OP_CW1 << FIR_OP6_SHIFT) | + (FIR_OP_RS << FIR_OP7_SHIFT)); if (column >= mtd->writesize) { /* OOB area --> READOOB */ column -= mtd->writesize; fcr |= NAND_CMD_READOOB << FCR_CMD0_SHIFT; ctrl->oob = 1; - } else if (column < 256) { + } else { + WARN_ON(column != 0); /* First 256 bytes --> READ0 */ fcr |= NAND_CMD_READ0 << FCR_CMD0_SHIFT; - } else { - /* Second 256 bytes --> READ1 */ - fcr |= NAND_CMD_READ1 << FCR_CMD0_SHIFT; } } @@ -628,22 +636,6 @@ static int fsl_elbc_wait(struct mtd_info *mtd, struct nand_chip *chip) { struct fsl_elbc_mtd *priv = chip->priv; struct fsl_elbc_ctrl *ctrl = priv->ctrl; - struct fsl_lbc_regs __iomem *lbc = ctrl->regs; - - if (ctrl->status != LTESR_CC) - return NAND_STATUS_FAIL; - - /* Use READ_STATUS command, but wait for the device to be ready */ - ctrl->use_mdr = 0; - out_be32(&lbc->fir, - (FIR_OP_CW0 << FIR_OP0_SHIFT) | - (FIR_OP_RBW << FIR_OP1_SHIFT)); - out_be32(&lbc->fcr, NAND_CMD_STATUS << FCR_CMD0_SHIFT); - out_be32(&lbc->fbcr, 1); - set_addr(mtd, 0, 0, 0); - ctrl->read_bytes = 1; - - fsl_elbc_run_command(mtd); if (ctrl->status != LTESR_CC) return NAND_STATUS_FAIL; @@ -651,8 +643,7 @@ static int fsl_elbc_wait(struct mtd_info *mtd, struct nand_chip *chip) /* The chip always seems to report that it is * write-protected, even when it is not. */ - setbits8(ctrl->addr, NAND_STATUS_WP); - return fsl_elbc_read_byte(mtd); + return (ctrl->mdr & 0xff) | NAND_STATUS_WP; } static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) @@ -946,6 +937,13 @@ static int __devinit fsl_elbc_ctrl_init(struct fsl_elbc_ctrl *ctrl) { struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + /* + * NAND transactions can tie up the bus for a long time, so set the + * bus timeout to max by clearing LBCR[BMT] (highest base counter + * value) and setting LBCR[BMTPS] to the highest prescaler value. + */ + clrsetbits_be32(&lbc->lbcr, LBCR_BMT, 15); + /* clear event registers */ setbits32(&lbc->ltesr, LTESR_NAND_MASK); out_be32(&lbc->lteatr, 0); diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index d120cd8d726..071a60cb420 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -112,7 +112,7 @@ static void fun_select_chip(struct mtd_info *mtd, int mchip_nr) if (mchip_nr == -1) { chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE); - } else if (mchip_nr >= 0) { + } else if (mchip_nr >= 0 && mchip_nr < NAND_MAX_CHIPS) { fun->mchip_number = mchip_nr; chip->IO_ADDR_R = fun->io_base + fun->mchip_offsets[mchip_nr]; chip->IO_ADDR_W = chip->IO_ADDR_R; diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 65b26d5a5c0..45dec5770da 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -33,9 +33,13 @@ #include <asm/mach/flash.h> #include <mach/mxc_nand.h> +#include <mach/hardware.h> #define DRIVER_NAME "mxc_nand" +#define nfc_is_v21() (cpu_is_mx25() || cpu_is_mx35()) +#define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27()) + /* Addresses for NFC registers */ #define NFC_BUF_SIZE 0xE00 #define NFC_BUF_ADDR 0xE04 @@ -46,24 +50,14 @@ #define NFC_RSLTMAIN_AREA 0xE0E #define NFC_RSLTSPARE_AREA 0xE10 #define NFC_WRPROT 0xE12 -#define NFC_UNLOCKSTART_BLKADDR 0xE14 -#define NFC_UNLOCKEND_BLKADDR 0xE16 +#define NFC_V1_UNLOCKSTART_BLKADDR 0xe14 +#define NFC_V1_UNLOCKEND_BLKADDR 0xe16 +#define NFC_V21_UNLOCKSTART_BLKADDR 0xe20 +#define NFC_V21_UNLOCKEND_BLKADDR 0xe22 #define NFC_NF_WRPRST 0xE18 #define NFC_CONFIG1 0xE1A #define NFC_CONFIG2 0xE1C -/* Addresses for NFC RAM BUFFER Main area 0 */ -#define MAIN_AREA0 0x000 -#define MAIN_AREA1 0x200 -#define MAIN_AREA2 0x400 -#define MAIN_AREA3 0x600 - -/* Addresses for NFC SPARE BUFFER Spare area 0 */ -#define SPARE_AREA0 0x800 -#define SPARE_AREA1 0x810 -#define SPARE_AREA2 0x820 -#define SPARE_AREA3 0x830 - /* Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register * for Command operation */ #define NFC_CMD 0x1 @@ -106,48 +100,66 @@ struct mxc_nand_host { struct mtd_partition *parts; struct device *dev; + void *spare0; + void *main_area0; + void *main_area1; + + void __iomem *base; void __iomem *regs; - int spare_only; int status_request; - int pagesize_2k; - uint16_t col_addr; struct clk *clk; int clk_act; int irq; wait_queue_head_t irq_waitq; -}; - -/* Define delays in microsec for NAND device operations */ -#define TROP_US_DELAY 2000 -/* Macros to get byte and bit positions of ECC */ -#define COLPOS(x) ((x) >> 3) -#define BITPOS(x) ((x) & 0xf) -/* Define single bit Error positions in Main & Spare area */ -#define MAIN_SINGLEBIT_ERROR 0x4 -#define SPARE_SINGLEBIT_ERROR 0x1 - -/* OOB placement block for use with hardware ecc generation */ -static struct nand_ecclayout nand_hw_eccoob_8 = { - .eccbytes = 5, - .eccpos = {6, 7, 8, 9, 10}, - .oobfree = {{0, 5}, {11, 5}, } + uint8_t *data_buf; + unsigned int buf_start; + int spare_len; }; -static struct nand_ecclayout nand_hw_eccoob_16 = { +/* OOB placement block for use with hardware ecc generation */ +static struct nand_ecclayout nandv1_hw_eccoob_smallpage = { .eccbytes = 5, .eccpos = {6, 7, 8, 9, 10}, - .oobfree = {{0, 5}, {11, 5}, } + .oobfree = {{0, 5}, {12, 4}, } }; -static struct nand_ecclayout nand_hw_eccoob_64 = { +static struct nand_ecclayout nandv1_hw_eccoob_largepage = { .eccbytes = 20, .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26, 38, 39, 40, 41, 42, 54, 55, 56, 57, 58}, .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, } }; +/* OOB description for 512 byte pages with 16 byte OOB */ +static struct nand_ecclayout nandv2_hw_eccoob_smallpage = { + .eccbytes = 1 * 9, + .eccpos = { + 7, 8, 9, 10, 11, 12, 13, 14, 15 + }, + .oobfree = { + {.offset = 0, .length = 5} + } +}; + +/* OOB description for 2048 byte pages with 64 byte OOB */ +static struct nand_ecclayout nandv2_hw_eccoob_largepage = { + .eccbytes = 4 * 9, + .eccpos = { + 7, 8, 9, 10, 11, 12, 13, 14, 15, + 23, 24, 25, 26, 27, 28, 29, 30, 31, + 39, 40, 41, 42, 43, 44, 45, 46, 47, + 55, 56, 57, 58, 59, 60, 61, 62, 63 + }, + .oobfree = { + {.offset = 2, .length = 4}, + {.offset = 16, .length = 7}, + {.offset = 32, .length = 7}, + {.offset = 48, .length = 7} + } +}; + #ifdef CONFIG_MTD_PARTITIONS static const char *part_probes[] = { "RedBoot", "cmdlinepart", NULL }; #endif @@ -170,10 +182,10 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) /* This function polls the NANDFC to wait for the basic operation to * complete by checking the INT bit of config2 register. */ -static void wait_op_done(struct mxc_nand_host *host, int max_retries, - uint16_t param, int useirq) +static void wait_op_done(struct mxc_nand_host *host, int useirq) { uint32_t tmp; + int max_retries = 2000; if (useirq) { if ((readw(host->regs + NFC_CONFIG2) & NFC_INT) == 0) { @@ -200,8 +212,8 @@ static void wait_op_done(struct mxc_nand_host *host, int max_retries, udelay(1); } if (max_retries < 0) - DEBUG(MTD_DEBUG_LEVEL0, "%s(%d): INT not set\n", - __func__, param); + DEBUG(MTD_DEBUG_LEVEL0, "%s: INT not set\n", + __func__); } } @@ -215,7 +227,7 @@ static void send_cmd(struct mxc_nand_host *host, uint16_t cmd, int useirq) writew(NFC_CMD, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, cmd, useirq); + wait_op_done(host, useirq); } /* This function sends an address (or partial address) to the @@ -229,82 +241,47 @@ static void send_addr(struct mxc_nand_host *host, uint16_t addr, int islast) writew(NFC_ADDR, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, addr, islast); + wait_op_done(host, islast); } -/* This function requests the NANDFC to initate the transfer - * of data currently in the NANDFC RAM buffer to the NAND device. */ -static void send_prog_page(struct mxc_nand_host *host, uint8_t buf_id, - int spare_only) +static void send_page(struct mtd_info *mtd, unsigned int ops) { - DEBUG(MTD_DEBUG_LEVEL3, "send_prog_page (%d)\n", spare_only); - - /* NANDFC buffer 0 is used for page read/write */ - writew(buf_id, host->regs + NFC_BUF_ADDR); - - /* Configure spare or page+spare access */ - if (!host->pagesize_2k) { - uint16_t config1 = readw(host->regs + NFC_CONFIG1); - if (spare_only) - config1 |= NFC_SP_EN; - else - config1 &= ~(NFC_SP_EN); - writew(config1, host->regs + NFC_CONFIG1); - } + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; + int bufs, i; - writew(NFC_INPUT, host->regs + NFC_CONFIG2); + if (nfc_is_v1() && mtd->writesize > 512) + bufs = 4; + else + bufs = 1; - /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, spare_only, true); -} + for (i = 0; i < bufs; i++) { -/* Requests NANDFC to initated the transfer of data from the - * NAND device into in the NANDFC ram buffer. */ -static void send_read_page(struct mxc_nand_host *host, uint8_t buf_id, - int spare_only) -{ - DEBUG(MTD_DEBUG_LEVEL3, "send_read_page (%d)\n", spare_only); + /* NANDFC buffer 0 is used for page read/write */ + writew(i, host->regs + NFC_BUF_ADDR); - /* NANDFC buffer 0 is used for page read/write */ - writew(buf_id, host->regs + NFC_BUF_ADDR); + writew(ops, host->regs + NFC_CONFIG2); - /* Configure spare or page+spare access */ - if (!host->pagesize_2k) { - uint32_t config1 = readw(host->regs + NFC_CONFIG1); - if (spare_only) - config1 |= NFC_SP_EN; - else - config1 &= ~NFC_SP_EN; - writew(config1, host->regs + NFC_CONFIG1); + /* Wait for operation to complete */ + wait_op_done(host, true); } - - writew(NFC_OUTPUT, host->regs + NFC_CONFIG2); - - /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, spare_only, true); } /* Request the NANDFC to perform a read of the NAND device ID. */ static void send_read_id(struct mxc_nand_host *host) { struct nand_chip *this = &host->nand; - uint16_t tmp; /* NANDFC buffer 0 is used for device ID output */ writew(0x0, host->regs + NFC_BUF_ADDR); - /* Read ID into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_ID, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, 0, true); + wait_op_done(host, true); if (this->options & NAND_BUSWIDTH_16) { - void __iomem *main_buf = host->regs + MAIN_AREA0; + void __iomem *main_buf = host->main_area0; /* compress the ID info */ writeb(readb(main_buf + 2), main_buf + 1); writeb(readb(main_buf + 4), main_buf + 2); @@ -312,15 +289,16 @@ static void send_read_id(struct mxc_nand_host *host) writeb(readb(main_buf + 8), main_buf + 4); writeb(readb(main_buf + 10), main_buf + 5); } + memcpy(host->data_buf, host->main_area0, 16); } /* This function requests the NANDFC to perform a read of the * NAND device status and returns the current status. */ static uint16_t get_dev_status(struct mxc_nand_host *host) { - void __iomem *main_buf = host->regs + MAIN_AREA1; + void __iomem *main_buf = host->main_area1; uint32_t store; - uint16_t ret, tmp; + uint16_t ret; /* Issue status request to NAND device */ /* store the main area1 first word, later do recovery */ @@ -329,15 +307,10 @@ static uint16_t get_dev_status(struct mxc_nand_host *host) * corruption of read/write buffer on status requests. */ writew(1, host->regs + NFC_BUF_ADDR); - /* Read status into main buffer */ - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_SP_EN; - writew(tmp, host->regs + NFC_CONFIG1); - writew(NFC_STATUS, host->regs + NFC_CONFIG2); /* Wait for operation to complete */ - wait_op_done(host, TROP_US_DELAY, 0, true); + wait_op_done(host, true); /* Status is placed in first word of main buffer */ /* get status, then recovery area 1 data */ @@ -397,32 +370,14 @@ static u_char mxc_nand_read_byte(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; - uint8_t ret = 0; - uint16_t col, rd_word; - uint16_t __iomem *main_buf = host->regs + MAIN_AREA0; - uint16_t __iomem *spare_buf = host->regs + SPARE_AREA0; + uint8_t ret; /* Check for status request */ if (host->status_request) return get_dev_status(host) & 0xFF; - /* Get column for 16-bit access */ - col = host->col_addr >> 1; - - /* If we are accessing the spare region */ - if (host->spare_only) - rd_word = readw(&spare_buf[col]); - else - rd_word = readw(&main_buf[col]); - - /* Pick upper/lower byte of word from RAM buffer */ - if (host->col_addr & 0x1) - ret = (rd_word >> 8) & 0xFF; - else - ret = rd_word & 0xFF; - - /* Update saved column address */ - host->col_addr++; + ret = *(uint8_t *)(host->data_buf + host->buf_start); + host->buf_start++; return ret; } @@ -431,33 +386,10 @@ static uint16_t mxc_nand_read_word(struct mtd_info *mtd) { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; - uint16_t col, rd_word, ret; - uint16_t __iomem *p; - - DEBUG(MTD_DEBUG_LEVEL3, - "mxc_nand_read_word(col = %d)\n", host->col_addr); - - col = host->col_addr; - /* Adjust saved column address */ - if (col < mtd->writesize && host->spare_only) - col += mtd->writesize; + uint16_t ret; - if (col < mtd->writesize) - p = (host->regs + MAIN_AREA0) + (col >> 1); - else - p = (host->regs + SPARE_AREA0) + ((col - mtd->writesize) >> 1); - - if (col & 1) { - rd_word = readw(p); - ret = (rd_word >> 8) & 0xff; - rd_word = readw(&p[1]); - ret |= (rd_word << 8) & 0xff00; - - } else - ret = readw(p); - - /* Update saved column address */ - host->col_addr = col + 2; + ret = *(uint16_t *)(host->data_buf + host->buf_start); + host->buf_start += 2; return ret; } @@ -470,94 +402,14 @@ static void mxc_nand_write_buf(struct mtd_info *mtd, { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; - int n, col, i = 0; - - DEBUG(MTD_DEBUG_LEVEL3, - "mxc_nand_write_buf(col = %d, len = %d)\n", host->col_addr, - len); - - col = host->col_addr; + u16 col = host->buf_start; + int n = mtd->oobsize + mtd->writesize - col; - /* Adjust saved column address */ - if (col < mtd->writesize && host->spare_only) - col += mtd->writesize; + n = min(n, len); - n = mtd->writesize + mtd->oobsize - col; - n = min(len, n); - - DEBUG(MTD_DEBUG_LEVEL3, - "%s:%d: col = %d, n = %d\n", __func__, __LINE__, col, n); - - while (n) { - void __iomem *p; - - if (col < mtd->writesize) - p = host->regs + MAIN_AREA0 + (col & ~3); - else - p = host->regs + SPARE_AREA0 - - mtd->writesize + (col & ~3); - - DEBUG(MTD_DEBUG_LEVEL3, "%s:%d: p = %p\n", __func__, - __LINE__, p); - - if (((col | (int)&buf[i]) & 3) || n < 16) { - uint32_t data = 0; - - if (col & 3 || n < 4) - data = readl(p); - - switch (col & 3) { - case 0: - if (n) { - data = (data & 0xffffff00) | - (buf[i++] << 0); - n--; - col++; - } - case 1: - if (n) { - data = (data & 0xffff00ff) | - (buf[i++] << 8); - n--; - col++; - } - case 2: - if (n) { - data = (data & 0xff00ffff) | - (buf[i++] << 16); - n--; - col++; - } - case 3: - if (n) { - data = (data & 0x00ffffff) | - (buf[i++] << 24); - n--; - col++; - } - } - - writel(data, p); - } else { - int m = mtd->writesize - col; + memcpy(host->data_buf + col, buf, n); - if (col >= mtd->writesize) - m += mtd->oobsize; - - m = min(n, m) & ~3; - - DEBUG(MTD_DEBUG_LEVEL3, - "%s:%d: n = %d, m = %d, i = %d, col = %d\n", - __func__, __LINE__, n, m, i, col); - - memcpy(p, &buf[i], m); - col += m; - i += m; - n -= m; - } - } - /* Update saved column address */ - host->col_addr = col; + host->buf_start += n; } /* Read the data buffer from the NAND Flash. To read the data from NAND @@ -568,75 +420,14 @@ static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; - int n, col, i = 0; - - DEBUG(MTD_DEBUG_LEVEL3, - "mxc_nand_read_buf(col = %d, len = %d)\n", host->col_addr, len); - - col = host->col_addr; + u16 col = host->buf_start; + int n = mtd->oobsize + mtd->writesize - col; - /* Adjust saved column address */ - if (col < mtd->writesize && host->spare_only) - col += mtd->writesize; + n = min(n, len); - n = mtd->writesize + mtd->oobsize - col; - n = min(len, n); - - while (n) { - void __iomem *p; - - if (col < mtd->writesize) - p = host->regs + MAIN_AREA0 + (col & ~3); - else - p = host->regs + SPARE_AREA0 - - mtd->writesize + (col & ~3); - - if (((col | (int)&buf[i]) & 3) || n < 16) { - uint32_t data; - - data = readl(p); - switch (col & 3) { - case 0: - if (n) { - buf[i++] = (uint8_t) (data); - n--; - col++; - } - case 1: - if (n) { - buf[i++] = (uint8_t) (data >> 8); - n--; - col++; - } - case 2: - if (n) { - buf[i++] = (uint8_t) (data >> 16); - n--; - col++; - } - case 3: - if (n) { - buf[i++] = (uint8_t) (data >> 24); - n--; - col++; - } - } - } else { - int m = mtd->writesize - col; - - if (col >= mtd->writesize) - m += mtd->oobsize; - - m = min(n, m) & ~3; - memcpy(&buf[i], p, m); - col += m; - i += m; - n -= m; - } - } - /* Update saved column address */ - host->col_addr = col; + memcpy(buf, host->data_buf + col, len); + host->buf_start += len; } /* Used by the upper layer to verify the data in NAND Flash @@ -654,23 +445,6 @@ static void mxc_nand_select_chip(struct mtd_info *mtd, int chip) struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; -#ifdef CONFIG_MTD_NAND_MXC_FORCE_CE - if (chip > 0) { - DEBUG(MTD_DEBUG_LEVEL0, - "ERROR: Illegal chip select (chip = %d)\n", chip); - return; - } - - if (chip == -1) { - writew(readw(host->regs + NFC_CONFIG1) & ~NFC_CE, - host->regs + NFC_CONFIG1); - return; - } - - writew(readw(host->regs + NFC_CONFIG1) | NFC_CE, - host->regs + NFC_CONFIG1); -#endif - switch (chip) { case -1: /* Disable the NFC clock */ @@ -692,94 +466,40 @@ static void mxc_nand_select_chip(struct mtd_info *mtd, int chip) } } -/* Used by the upper layer to write command to NAND Flash for - * different operations to be carried out on NAND Flash */ -static void mxc_nand_command(struct mtd_info *mtd, unsigned command, - int column, int page_addr) +/* + * Function to transfer data to/from spare area. + */ +static void copy_spare(struct mtd_info *mtd, bool bfrom) { - struct nand_chip *nand_chip = mtd->priv; - struct mxc_nand_host *host = nand_chip->priv; - int useirq = true; - - DEBUG(MTD_DEBUG_LEVEL3, - "mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n", - command, column, page_addr); - - /* Reset command state information */ - host->status_request = false; - - /* Command pre-processing step */ - switch (command) { - - case NAND_CMD_STATUS: - host->col_addr = 0; - host->status_request = true; - break; - - case NAND_CMD_READ0: - host->col_addr = column; - host->spare_only = false; - useirq = false; - break; - - case NAND_CMD_READOOB: - host->col_addr = column; - host->spare_only = true; - useirq = false; - if (host->pagesize_2k) - command = NAND_CMD_READ0; /* only READ0 is valid */ - break; - - case NAND_CMD_SEQIN: - if (column >= mtd->writesize) { - /* - * FIXME: before send SEQIN command for write OOB, - * We must read one page out. - * For K9F1GXX has no READ1 command to set current HW - * pointer to spare area, we must write the whole page - * including OOB together. - */ - if (host->pagesize_2k) - /* call ourself to read a page */ - mxc_nand_command(mtd, NAND_CMD_READ0, 0, - page_addr); - - host->col_addr = column - mtd->writesize; - host->spare_only = true; - - /* Set program pointer to spare region */ - if (!host->pagesize_2k) - send_cmd(host, NAND_CMD_READOOB, false); - } else { - host->spare_only = false; - host->col_addr = column; - - /* Set program pointer to page start */ - if (!host->pagesize_2k) - send_cmd(host, NAND_CMD_READ0, false); - } - useirq = false; - break; - - case NAND_CMD_PAGEPROG: - send_prog_page(host, 0, host->spare_only); - - if (host->pagesize_2k) { - /* data in 4 areas datas */ - send_prog_page(host, 1, host->spare_only); - send_prog_page(host, 2, host->spare_only); - send_prog_page(host, 3, host->spare_only); - } - - break; + struct nand_chip *this = mtd->priv; + struct mxc_nand_host *host = this->priv; + u16 i, j; + u16 n = mtd->writesize >> 9; + u8 *d = host->data_buf + mtd->writesize; + u8 *s = host->spare0; + u16 t = host->spare_len; + + j = (mtd->oobsize / n >> 1) << 1; + + if (bfrom) { + for (i = 0; i < n - 1; i++) + memcpy(d + i * j, s + i * t, j); + + /* the last section */ + memcpy(d + i * j, s + i * t, mtd->oobsize - i * j); + } else { + for (i = 0; i < n - 1; i++) + memcpy(&s[i * t], &d[i * j], j); - case NAND_CMD_ERASE1: - useirq = false; - break; + /* the last section */ + memcpy(&s[i * t], &d[i * j], mtd->oobsize - i * j); } +} - /* Write out the command to the device. */ - send_cmd(host, command, useirq); +static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) +{ + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; /* Write out column address, if necessary */ if (column != -1) { @@ -791,7 +511,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, * the full page. */ send_addr(host, 0, page_addr == -1); - if (host->pagesize_2k) + if (mtd->writesize > 512) /* another col addr cycle for 2k page */ send_addr(host, 0, false); } @@ -801,7 +521,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, /* paddr_0 - p_addr_7 */ send_addr(host, (page_addr & 0xff), false); - if (host->pagesize_2k) { + if (mtd->writesize > 512) { if (mtd->size >= 0x10000000) { /* paddr_8 - paddr_15 */ send_addr(host, (page_addr >> 8) & 0xff, false); @@ -820,52 +540,136 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, send_addr(host, (page_addr >> 8) & 0xff, true); } } +} + +/* Used by the upper layer to write command to NAND Flash for + * different operations to be carried out on NAND Flash */ +static void mxc_nand_command(struct mtd_info *mtd, unsigned command, + int column, int page_addr) +{ + struct nand_chip *nand_chip = mtd->priv; + struct mxc_nand_host *host = nand_chip->priv; + + DEBUG(MTD_DEBUG_LEVEL3, + "mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n", + command, column, page_addr); + + /* Reset command state information */ + host->status_request = false; - /* Command post-processing step */ + /* Command pre-processing step */ switch (command) { - case NAND_CMD_RESET: + case NAND_CMD_STATUS: + host->buf_start = 0; + host->status_request = true; + + send_cmd(host, command, true); + mxc_do_addr_cycle(mtd, column, page_addr); break; - case NAND_CMD_READOOB: case NAND_CMD_READ0: - if (host->pagesize_2k) { - /* send read confirm command */ + case NAND_CMD_READOOB: + if (command == NAND_CMD_READ0) + host->buf_start = column; + else + host->buf_start = column + mtd->writesize; + + if (mtd->writesize > 512) + command = NAND_CMD_READ0; /* only READ0 is valid */ + + send_cmd(host, command, false); + mxc_do_addr_cycle(mtd, column, page_addr); + + if (mtd->writesize > 512) send_cmd(host, NAND_CMD_READSTART, true); - /* read for each AREA */ - send_read_page(host, 0, host->spare_only); - send_read_page(host, 1, host->spare_only); - send_read_page(host, 2, host->spare_only); - send_read_page(host, 3, host->spare_only); - } else - send_read_page(host, 0, host->spare_only); + + send_page(mtd, NFC_OUTPUT); + + memcpy(host->data_buf, host->main_area0, mtd->writesize); + copy_spare(mtd, true); break; - case NAND_CMD_READID: - host->col_addr = 0; - send_read_id(host); + case NAND_CMD_SEQIN: + if (column >= mtd->writesize) { + /* + * FIXME: before send SEQIN command for write OOB, + * We must read one page out. + * For K9F1GXX has no READ1 command to set current HW + * pointer to spare area, we must write the whole page + * including OOB together. + */ + if (mtd->writesize > 512) + /* call ourself to read a page */ + mxc_nand_command(mtd, NAND_CMD_READ0, 0, + page_addr); + + host->buf_start = column; + + /* Set program pointer to spare region */ + if (mtd->writesize == 512) + send_cmd(host, NAND_CMD_READOOB, false); + } else { + host->buf_start = column; + + /* Set program pointer to page start */ + if (mtd->writesize == 512) + send_cmd(host, NAND_CMD_READ0, false); + } + + send_cmd(host, command, false); + mxc_do_addr_cycle(mtd, column, page_addr); break; case NAND_CMD_PAGEPROG: + memcpy(host->main_area0, host->data_buf, mtd->writesize); + copy_spare(mtd, false); + send_page(mtd, NFC_INPUT); + send_cmd(host, command, true); + mxc_do_addr_cycle(mtd, column, page_addr); break; - case NAND_CMD_STATUS: + case NAND_CMD_READID: + send_cmd(host, command, true); + mxc_do_addr_cycle(mtd, column, page_addr); + send_read_id(host); + host->buf_start = column; break; + case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: + send_cmd(host, command, false); + mxc_do_addr_cycle(mtd, column, page_addr); + break; } } -/* Define some generic bad / good block scan pattern which are used - * while scanning a device for factory marked good / bad blocks. */ -static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; +/* + * The generic flash bbt decriptors overlap with our ecc + * hardware, so define some i.MX specific ones. + */ +static uint8_t bbt_pattern[] = { 'B', 'b', 't', '0' }; +static uint8_t mirror_pattern[] = { '1', 't', 'b', 'B' }; + +static struct nand_bbt_descr bbt_main_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 0, + .len = 4, + .veroffs = 4, + .maxblocks = 4, + .pattern = bbt_pattern, +}; -static struct nand_bbt_descr smallpage_memorybased = { - .options = NAND_BBT_SCAN2NDPAGE, - .offs = 5, - .len = 1, - .pattern = scan_ff_pattern +static struct nand_bbt_descr bbt_mirror_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 0, + .len = 4, + .veroffs = 4, + .maxblocks = 4, + .pattern = mirror_pattern, }; static int __init mxcnd_probe(struct platform_device *pdev) @@ -877,12 +681,16 @@ static int __init mxcnd_probe(struct platform_device *pdev) struct resource *res; uint16_t tmp; int err = 0, nr_parts = 0; + struct nand_ecclayout *oob_smallpage, *oob_largepage; /* Allocate memory for MTD device structure and private data */ - host = kzalloc(sizeof(struct mxc_nand_host), GFP_KERNEL); + host = kzalloc(sizeof(struct mxc_nand_host) + NAND_MAX_PAGESIZE + + NAND_MAX_OOBSIZE, GFP_KERNEL); if (!host) return -ENOMEM; + host->data_buf = (uint8_t *)(host + 1); + host->dev = &pdev->dev; /* structures must be linked */ this = &host->nand; @@ -890,7 +698,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) mtd->priv = this; mtd->owner = THIS_MODULE; mtd->dev.parent = &pdev->dev; - mtd->name = "mxc_nand"; + mtd->name = DRIVER_NAME; /* 50 us command delay time */ this->chip_delay = 5; @@ -920,62 +728,93 @@ static int __init mxcnd_probe(struct platform_device *pdev) goto eres; } - host->regs = ioremap(res->start, res->end - res->start + 1); - if (!host->regs) { + host->base = ioremap(res->start, resource_size(res)); + if (!host->base) { err = -ENOMEM; goto eres; } + host->main_area0 = host->base; + host->main_area1 = host->base + 0x200; + + if (nfc_is_v21()) { + host->regs = host->base + 0x1000; + host->spare0 = host->base + 0x1000; + host->spare_len = 64; + oob_smallpage = &nandv2_hw_eccoob_smallpage; + oob_largepage = &nandv2_hw_eccoob_largepage; + } else if (nfc_is_v1()) { + host->regs = host->base; + host->spare0 = host->base + 0x800; + host->spare_len = 16; + oob_smallpage = &nandv1_hw_eccoob_smallpage; + oob_largepage = &nandv1_hw_eccoob_largepage; + } else + BUG(); + + /* disable interrupt and spare enable */ tmp = readw(host->regs + NFC_CONFIG1); tmp |= NFC_INT_MSK; + tmp &= ~NFC_SP_EN; writew(tmp, host->regs + NFC_CONFIG1); init_waitqueue_head(&host->irq_waitq); host->irq = platform_get_irq(pdev, 0); - err = request_irq(host->irq, mxc_nfc_irq, 0, "mxc_nd", host); + err = request_irq(host->irq, mxc_nfc_irq, 0, DRIVER_NAME, host); if (err) goto eirq; + /* Reset NAND */ + this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + + /* preset operation */ + /* Unlock the internal RAM Buffer */ + writew(0x2, host->regs + NFC_CONFIG); + + /* Blocks to be unlocked */ + if (nfc_is_v21()) { + writew(0x0, host->regs + NFC_V21_UNLOCKSTART_BLKADDR); + writew(0xffff, host->regs + NFC_V21_UNLOCKEND_BLKADDR); + this->ecc.bytes = 9; + } else if (nfc_is_v1()) { + writew(0x0, host->regs + NFC_V1_UNLOCKSTART_BLKADDR); + writew(0x4000, host->regs + NFC_V1_UNLOCKEND_BLKADDR); + this->ecc.bytes = 3; + } else + BUG(); + + /* Unlock Block Command for given address range */ + writew(0x4, host->regs + NFC_WRPROT); + + this->ecc.size = 512; + this->ecc.layout = oob_smallpage; + if (pdata->hw_ecc) { this->ecc.calculate = mxc_nand_calculate_ecc; this->ecc.hwctl = mxc_nand_enable_hwecc; this->ecc.correct = mxc_nand_correct_data; this->ecc.mode = NAND_ECC_HW; - this->ecc.size = 512; - this->ecc.bytes = 3; tmp = readw(host->regs + NFC_CONFIG1); tmp |= NFC_ECC_EN; writew(tmp, host->regs + NFC_CONFIG1); } else { - this->ecc.size = 512; - this->ecc.bytes = 3; - this->ecc.layout = &nand_hw_eccoob_8; this->ecc.mode = NAND_ECC_SOFT; tmp = readw(host->regs + NFC_CONFIG1); tmp &= ~NFC_ECC_EN; writew(tmp, host->regs + NFC_CONFIG1); } - /* Reset NAND */ - this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); - - /* preset operation */ - /* Unlock the internal RAM Buffer */ - writew(0x2, host->regs + NFC_CONFIG); - - /* Blocks to be unlocked */ - writew(0x0, host->regs + NFC_UNLOCKSTART_BLKADDR); - writew(0x4000, host->regs + NFC_UNLOCKEND_BLKADDR); - - /* Unlock Block Command for given address range */ - writew(0x4, host->regs + NFC_WRPROT); - /* NAND bus width determines access funtions used by upper layer */ - if (pdata->width == 2) { + if (pdata->width == 2) this->options |= NAND_BUSWIDTH_16; - this->ecc.layout = &nand_hw_eccoob_16; + + if (pdata->flash_bbt) { + this->bbt_td = &bbt_main_descr; + this->bbt_md = &bbt_mirror_descr; + /* update flash based bbt */ + this->options |= NAND_USE_FLASH_BBT; } /* first scan to find the device and get the page size */ @@ -984,38 +823,8 @@ static int __init mxcnd_probe(struct platform_device *pdev) goto escan; } - if (mtd->writesize == 2048) { - host->pagesize_2k = 1; - this->badblock_pattern = &smallpage_memorybased; - } - - if (this->ecc.mode == NAND_ECC_HW) { - switch (mtd->oobsize) { - case 8: - this->ecc.layout = &nand_hw_eccoob_8; - break; - case 16: - this->ecc.layout = &nand_hw_eccoob_16; - break; - case 64: - this->ecc.layout = &nand_hw_eccoob_64; - break; - default: - /* page size not handled by HW ECC */ - /* switching back to soft ECC */ - this->ecc.size = 512; - this->ecc.bytes = 3; - this->ecc.layout = &nand_hw_eccoob_8; - this->ecc.mode = NAND_ECC_SOFT; - this->ecc.calculate = NULL; - this->ecc.correct = NULL; - this->ecc.hwctl = NULL; - tmp = readw(host->regs + NFC_CONFIG1); - tmp &= ~NFC_ECC_EN; - writew(tmp, host->regs + NFC_CONFIG1); - break; - } - } + if (mtd->writesize == 2048) + this->ecc.layout = oob_largepage; /* second phase scan */ if (nand_scan_tail(mtd)) { @@ -1043,7 +852,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) escan: free_irq(host->irq, host); eirq: - iounmap(host->regs); + iounmap(host->base); eres: clk_put(host->clk); eclk: @@ -1062,7 +871,7 @@ static int __devexit mxcnd_remove(struct platform_device *pdev) nand_release(&host->mtd); free_irq(host->irq, host); - iounmap(host->regs); + iounmap(host->base); kfree(host); return 0; @@ -1113,7 +922,7 @@ static struct platform_driver mxcnd_driver = { .driver = { .name = DRIVER_NAME, }, - .remove = __exit_p(mxcnd_remove), + .remove = __devexit_p(mxcnd_remove), .suspend = mxcnd_suspend, .resume = mxcnd_resume, }; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 2957cc70da3..8f2958fe214 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -428,6 +428,28 @@ static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, return nand_isbad_bbt(mtd, ofs, allowbbt); } +/** + * panic_nand_wait_ready - [GENERIC] Wait for the ready pin after commands. + * @mtd: MTD device structure + * @timeo: Timeout + * + * Helper function for nand_wait_ready used when needing to wait in interrupt + * context. + */ +static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo) +{ + struct nand_chip *chip = mtd->priv; + int i; + + /* Wait for the device to get ready */ + for (i = 0; i < timeo; i++) { + if (chip->dev_ready(mtd)) + break; + touch_softlockup_watchdog(); + mdelay(1); + } +} + /* * Wait for the ready pin, after a command * The timeout is catched later. @@ -437,6 +459,10 @@ void nand_wait_ready(struct mtd_info *mtd) struct nand_chip *chip = mtd->priv; unsigned long timeo = jiffies + 2; + /* 400ms timeout */ + if (in_interrupt() || oops_in_progress) + return panic_nand_wait_ready(mtd, 400); + led_trigger_event(nand_led_trigger, LED_FULL); /* wait until command is processed or timeout occures */ do { @@ -672,6 +698,22 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, } /** + * panic_nand_get_device - [GENERIC] Get chip for selected access + * @chip: the nand chip descriptor + * @mtd: MTD device structure + * @new_state: the state which is requested + * + * Used when in panic, no locks are taken. + */ +static void panic_nand_get_device(struct nand_chip *chip, + struct mtd_info *mtd, int new_state) +{ + /* Hardware controller shared among independend devices */ + chip->controller->active = chip; + chip->state = new_state; +} + +/** * nand_get_device - [GENERIC] Get chip for selected access * @chip: the nand chip descriptor * @mtd: MTD device structure @@ -698,8 +740,14 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) return 0; } if (new_state == FL_PM_SUSPENDED) { - spin_unlock(lock); - return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; + if (chip->controller->active->state == FL_PM_SUSPENDED) { + chip->state = FL_PM_SUSPENDED; + spin_unlock(lock); + return 0; + } else { + spin_unlock(lock); + return -EAGAIN; + } } set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(wq, &wait); @@ -710,6 +758,32 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) } /** + * panic_nand_wait - [GENERIC] wait until the command is done + * @mtd: MTD device structure + * @chip: NAND chip structure + * @timeo: Timeout + * + * Wait for command done. This is a helper function for nand_wait used when + * we are in interrupt context. May happen when in panic and trying to write + * an oops trough mtdoops. + */ +static void panic_nand_wait(struct mtd_info *mtd, struct nand_chip *chip, + unsigned long timeo) +{ + int i; + for (i = 0; i < timeo; i++) { + if (chip->dev_ready) { + if (chip->dev_ready(mtd)) + break; + } else { + if (chip->read_byte(mtd) & NAND_STATUS_READY) + break; + } + mdelay(1); + } +} + +/** * nand_wait - [DEFAULT] wait until the command is done * @mtd: MTD device structure * @chip: NAND chip structure @@ -740,15 +814,19 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) else chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); - while (time_before(jiffies, timeo)) { - if (chip->dev_ready) { - if (chip->dev_ready(mtd)) - break; - } else { - if (chip->read_byte(mtd) & NAND_STATUS_READY) - break; + if (in_interrupt() || oops_in_progress) + panic_nand_wait(mtd, chip, timeo); + else { + while (time_before(jiffies, timeo)) { + if (chip->dev_ready) { + if (chip->dev_ready(mtd)) + break; + } else { + if (chip->read_byte(mtd) & NAND_STATUS_READY) + break; + } + cond_resched(); } - cond_resched(); } led_trigger_event(nand_led_trigger, LED_OFF); @@ -1949,6 +2027,45 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, } /** + * panic_nand_write - [MTD Interface] NAND write with ECC + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write + * + * NAND write with ECC. Used when performing writes in interrupt context, this + * may for example be called by mtdoops when writing an oops while in panic. + */ +static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const uint8_t *buf) +{ + struct nand_chip *chip = mtd->priv; + int ret; + + /* Do not allow reads past end of device */ + if ((to + len) > mtd->size) + return -EINVAL; + if (!len) + return 0; + + /* Wait for the device to get ready. */ + panic_nand_wait(mtd, chip, 400); + + /* Grab the device. */ + panic_nand_get_device(chip, mtd, FL_WRITING); + + chip->ops.len = len; + chip->ops.datbuf = (uint8_t *)buf; + chip->ops.oobbuf = NULL; + + ret = nand_do_write_ops(mtd, to, &chip->ops); + + *retlen = chip->ops.retlen; + return ret; +} + +/** * nand_write - [MTD Interface] NAND write with ECC * @mtd: MTD device structure * @to: offset to write to @@ -2645,7 +2762,8 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips) type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id); if (IS_ERR(type)) { - printk(KERN_WARNING "No NAND device found!!!\n"); + if (!(chip->options & NAND_SCAN_SILENT_NODEV)) + printk(KERN_WARNING "No NAND device found.\n"); chip->select_chip(mtd, -1); return PTR_ERR(type); } @@ -2877,6 +2995,7 @@ int nand_scan_tail(struct mtd_info *mtd) mtd->unpoint = NULL; mtd->read = nand_read; mtd->write = nand_write; + mtd->panic_write = panic_nand_write; mtd->read_oob = nand_read_oob; mtd->write_oob = nand_write_oob; mtd->sync = nand_sync; diff --git a/drivers/mtd/nand/nand_bcm_umi.c b/drivers/mtd/nand/nand_bcm_umi.c new file mode 100644 index 00000000000..46a6bc9c4b7 --- /dev/null +++ b/drivers/mtd/nand/nand_bcm_umi.c @@ -0,0 +1,149 @@ +/***************************************************************************** +* Copyright 2004 - 2009 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +/* ---- Include Files ---------------------------------------------------- */ +#include <mach/reg_umi.h> +#include "nand_bcm_umi.h" +#ifdef BOOT0_BUILD +#include <uart.h> +#endif + +/* ---- External Variable Declarations ----------------------------------- */ +/* ---- External Function Prototypes ------------------------------------- */ +/* ---- Public Variables ------------------------------------------------- */ +/* ---- Private Constants and Types -------------------------------------- */ +/* ---- Private Function Prototypes -------------------------------------- */ +/* ---- Private Variables ------------------------------------------------ */ +/* ---- Private Functions ------------------------------------------------ */ + +#if NAND_ECC_BCH +/**************************************************************************** +* nand_bch_ecc_flip_bit - Routine to flip an errored bit +* +* PURPOSE: +* This is a helper routine that flips the bit (0 -> 1 or 1 -> 0) of the +* errored bit specified +* +* PARAMETERS: +* datap - Container that holds the 512 byte data +* errorLocation - Location of the bit that needs to be flipped +* +* RETURNS: +* None +****************************************************************************/ +static void nand_bcm_umi_bch_ecc_flip_bit(uint8_t *datap, int errorLocation) +{ + int locWithinAByte = (errorLocation & REG_UMI_BCH_ERR_LOC_BYTE) >> 0; + int locWithinAWord = (errorLocation & REG_UMI_BCH_ERR_LOC_WORD) >> 3; + int locWithinAPage = (errorLocation & REG_UMI_BCH_ERR_LOC_PAGE) >> 5; + + uint8_t errorByte = 0; + uint8_t byteMask = 1 << locWithinAByte; + + /* BCH uses big endian, need to change the location + * bits to little endian */ + locWithinAWord = 3 - locWithinAWord; + + errorByte = datap[locWithinAPage * sizeof(uint32_t) + locWithinAWord]; + +#ifdef BOOT0_BUILD + puthexs("\nECC Correct Offset: ", + locWithinAPage * sizeof(uint32_t) + locWithinAWord); + puthexs(" errorByte:", errorByte); + puthex8(" Bit: ", locWithinAByte); +#endif + + if (errorByte & byteMask) { + /* bit needs to be cleared */ + errorByte &= ~byteMask; + } else { + /* bit needs to be set */ + errorByte |= byteMask; + } + + /* write back the value with the fixed bit */ + datap[locWithinAPage * sizeof(uint32_t) + locWithinAWord] = errorByte; +} + +/**************************************************************************** +* nand_correct_page_bch - Routine to correct bit errors when reading NAND +* +* PURPOSE: +* This routine reads the BCH registers to determine if there are any bit +* errors during the read of the last 512 bytes of data + ECC bytes. If +* errors exists, the routine fixes it. +* +* PARAMETERS: +* datap - Container that holds the 512 byte data +* +* RETURNS: +* 0 or greater = Number of errors corrected +* (No errors are found or errors have been fixed) +* -1 = Error(s) cannot be fixed +****************************************************************************/ +int nand_bcm_umi_bch_correct_page(uint8_t *datap, uint8_t *readEccData, + int numEccBytes) +{ + int numErrors; + int errorLocation; + int idx; + uint32_t regValue; + + /* wait for read ECC to be valid */ + regValue = nand_bcm_umi_bch_poll_read_ecc_calc(); + + /* + * read the control status register to determine if there + * are error'ed bits + * see if errors are correctible + */ + if ((regValue & REG_UMI_BCH_CTRL_STATUS_UNCORR_ERR) > 0) { + int i; + + for (i = 0; i < numEccBytes; i++) { + if (readEccData[i] != 0xff) { + /* errors cannot be fixed, return -1 */ + return -1; + } + } + /* If ECC is unprogrammed then we can't correct, + * assume everything OK */ + return 0; + } + + if ((regValue & REG_UMI_BCH_CTRL_STATUS_CORR_ERR) == 0) { + /* no errors */ + return 0; + } + + /* + * Fix errored bits by doing the following: + * 1. Read the number of errors in the control and status register + * 2. Read the error location registers that corresponds to the number + * of errors reported + * 3. Invert the bit in the data + */ + numErrors = (regValue & REG_UMI_BCH_CTRL_STATUS_NB_CORR_ERROR) >> 20; + + for (idx = 0; idx < numErrors; idx++) { + errorLocation = + REG_UMI_BCH_ERR_LOC_ADDR(idx) & REG_UMI_BCH_ERR_LOC_MASK; + + /* Flip bit */ + nand_bcm_umi_bch_ecc_flip_bit(datap, errorLocation); + } + /* Errors corrected */ + return numErrors; +} +#endif diff --git a/drivers/mtd/nand/nand_bcm_umi.h b/drivers/mtd/nand/nand_bcm_umi.h new file mode 100644 index 00000000000..7cec2cd9785 --- /dev/null +++ b/drivers/mtd/nand/nand_bcm_umi.h @@ -0,0 +1,358 @@ +/***************************************************************************** +* Copyright 2003 - 2009 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ +#ifndef NAND_BCM_UMI_H +#define NAND_BCM_UMI_H + +/* ---- Include Files ---------------------------------------------------- */ +#include <mach/reg_umi.h> +#include <mach/reg_nand.h> +#include <cfg_global.h> + +/* ---- Constants and Types ---------------------------------------------- */ +#if (CFG_GLOBAL_CHIP_FAMILY == CFG_GLOBAL_CHIP_FAMILY_BCMRING) +#define NAND_ECC_BCH (CFG_GLOBAL_CHIP_REV > 0xA0) +#else +#define NAND_ECC_BCH 0 +#endif + +#define CFG_GLOBAL_NAND_ECC_BCH_NUM_BYTES 13 + +#if NAND_ECC_BCH +#ifdef BOOT0_BUILD +#define NAND_ECC_NUM_BYTES 13 +#else +#define NAND_ECC_NUM_BYTES CFG_GLOBAL_NAND_ECC_BCH_NUM_BYTES +#endif +#else +#define NAND_ECC_NUM_BYTES 3 +#endif + +#define NAND_DATA_ACCESS_SIZE 512 + +/* ---- Variable Externs ------------------------------------------ */ +/* ---- Function Prototypes --------------------------------------- */ +int nand_bcm_umi_bch_correct_page(uint8_t *datap, uint8_t *readEccData, + int numEccBytes); + +/* Check in device is ready */ +static inline int nand_bcm_umi_dev_ready(void) +{ + return REG_UMI_NAND_RCSR & REG_UMI_NAND_RCSR_RDY; +} + +/* Wait until device is ready */ +static inline void nand_bcm_umi_wait_till_ready(void) +{ + while (nand_bcm_umi_dev_ready() == 0) + ; +} + +/* Enable Hamming ECC */ +static inline void nand_bcm_umi_hamming_enable_hwecc(void) +{ + /* disable and reset ECC, 512 byte page */ + REG_UMI_NAND_ECC_CSR &= ~(REG_UMI_NAND_ECC_CSR_ECC_ENABLE | + REG_UMI_NAND_ECC_CSR_256BYTE); + /* enable ECC */ + REG_UMI_NAND_ECC_CSR |= REG_UMI_NAND_ECC_CSR_ECC_ENABLE; +} + +#if NAND_ECC_BCH +/* BCH ECC specifics */ +#define ECC_BITS_PER_CORRECTABLE_BIT 13 + +/* Enable BCH Read ECC */ +static inline void nand_bcm_umi_bch_enable_read_hwecc(void) +{ + /* disable and reset ECC */ + REG_UMI_BCH_CTRL_STATUS = REG_UMI_BCH_CTRL_STATUS_RD_ECC_VALID; + /* Turn on ECC */ + REG_UMI_BCH_CTRL_STATUS = REG_UMI_BCH_CTRL_STATUS_ECC_RD_EN; +} + +/* Enable BCH Write ECC */ +static inline void nand_bcm_umi_bch_enable_write_hwecc(void) +{ + /* disable and reset ECC */ + REG_UMI_BCH_CTRL_STATUS = REG_UMI_BCH_CTRL_STATUS_WR_ECC_VALID; + /* Turn on ECC */ + REG_UMI_BCH_CTRL_STATUS = REG_UMI_BCH_CTRL_STATUS_ECC_WR_EN; +} + +/* Config number of BCH ECC bytes */ +static inline void nand_bcm_umi_bch_config_ecc(uint8_t numEccBytes) +{ + uint32_t nValue; + uint32_t tValue; + uint32_t kValue; + uint32_t numBits = numEccBytes * 8; + + /* disable and reset ECC */ + REG_UMI_BCH_CTRL_STATUS = + REG_UMI_BCH_CTRL_STATUS_WR_ECC_VALID | + REG_UMI_BCH_CTRL_STATUS_RD_ECC_VALID; + + /* Every correctible bit requires 13 ECC bits */ + tValue = (uint32_t) (numBits / ECC_BITS_PER_CORRECTABLE_BIT); + + /* Total data in number of bits for generating and computing BCH ECC */ + nValue = (NAND_DATA_ACCESS_SIZE + numEccBytes) * 8; + + /* K parameter is used internally. K = N - (T * 13) */ + kValue = nValue - (tValue * ECC_BITS_PER_CORRECTABLE_BIT); + + /* Write the settings */ + REG_UMI_BCH_N = nValue; + REG_UMI_BCH_T = tValue; + REG_UMI_BCH_K = kValue; +} + +/* Pause during ECC read calculation to skip bytes in OOB */ +static inline void nand_bcm_umi_bch_pause_read_ecc_calc(void) +{ + REG_UMI_BCH_CTRL_STATUS = + REG_UMI_BCH_CTRL_STATUS_ECC_RD_EN | + REG_UMI_BCH_CTRL_STATUS_PAUSE_ECC_DEC; +} + +/* Resume during ECC read calculation after skipping bytes in OOB */ +static inline void nand_bcm_umi_bch_resume_read_ecc_calc(void) +{ + REG_UMI_BCH_CTRL_STATUS = REG_UMI_BCH_CTRL_STATUS_ECC_RD_EN; +} + +/* Poll read ECC calc to check when hardware completes */ +static inline uint32_t nand_bcm_umi_bch_poll_read_ecc_calc(void) +{ + uint32_t regVal; + + do { + /* wait for ECC to be valid */ + regVal = REG_UMI_BCH_CTRL_STATUS; + } while ((regVal & REG_UMI_BCH_CTRL_STATUS_RD_ECC_VALID) == 0); + + return regVal; +} + +/* Poll write ECC calc to check when hardware completes */ +static inline void nand_bcm_umi_bch_poll_write_ecc_calc(void) +{ + /* wait for ECC to be valid */ + while ((REG_UMI_BCH_CTRL_STATUS & REG_UMI_BCH_CTRL_STATUS_WR_ECC_VALID) + == 0) + ; +} + +/* Read the OOB and ECC, for kernel write OOB to a buffer */ +#if defined(__KERNEL__) && !defined(STANDALONE) +static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, + uint8_t *eccCalc, int numEccBytes, uint8_t *oobp) +#else +static inline void nand_bcm_umi_bch_read_oobEcc(uint32_t pageSize, + uint8_t *eccCalc, int numEccBytes) +#endif +{ + int eccPos = 0; + int numToRead = 16; /* There are 16 bytes per sector in the OOB */ + + /* ECC is already paused when this function is called */ + + if (pageSize == NAND_DATA_ACCESS_SIZE) { + while (numToRead > numEccBytes) { + /* skip free oob region */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } + + /* read ECC bytes before BI */ + nand_bcm_umi_bch_resume_read_ecc_calc(); + + while (numToRead > 11) { +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp = REG_NAND_DATA8; + eccCalc[eccPos++] = *oobp; + oobp++; +#else + eccCalc[eccPos++] = REG_NAND_DATA8; +#endif + } + + nand_bcm_umi_bch_pause_read_ecc_calc(); + + if (numToRead == 11) { + /* read BI */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } + + /* read ECC bytes */ + nand_bcm_umi_bch_resume_read_ecc_calc(); + while (numToRead) { +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp = REG_NAND_DATA8; + eccCalc[eccPos++] = *oobp; + oobp++; +#else + eccCalc[eccPos++] = REG_NAND_DATA8; +#endif + numToRead--; + } + } else { + /* skip BI */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + + while (numToRead > numEccBytes) { + /* skip free oob region */ +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp++ = REG_NAND_DATA8; +#else + REG_NAND_DATA8; +#endif + numToRead--; + } + + /* read ECC bytes */ + nand_bcm_umi_bch_resume_read_ecc_calc(); + while (numToRead) { +#if defined(__KERNEL__) && !defined(STANDALONE) + *oobp = REG_NAND_DATA8; + eccCalc[eccPos++] = *oobp; + oobp++; +#else + eccCalc[eccPos++] = REG_NAND_DATA8; +#endif + numToRead--; + } + } +} + +/* Helper function to write ECC */ +static inline void NAND_BCM_UMI_ECC_WRITE(int numEccBytes, int eccBytePos, + uint8_t *oobp, uint8_t eccVal) +{ + if (eccBytePos <= numEccBytes) + *oobp = eccVal; +} + +/* Write OOB with ECC */ +static inline void nand_bcm_umi_bch_write_oobEcc(uint32_t pageSize, + uint8_t *oobp, int numEccBytes) +{ + uint32_t eccVal = 0xffffffff; + + /* wait for write ECC to be valid */ + nand_bcm_umi_bch_poll_write_ecc_calc(); + + /* + ** Get the hardware ecc from the 32-bit result registers. + ** Read after 512 byte accesses. Format B3B2B1B0 + ** where B3 = ecc3, etc. + */ + + if (pageSize == NAND_DATA_ACCESS_SIZE) { + /* Now fill in the ECC bytes */ + if (numEccBytes >= 13) + eccVal = REG_UMI_BCH_WR_ECC_3; + + /* Usually we skip CM in oob[0,1] */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 15, &oobp[0], + (eccVal >> 16) & 0xff); + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 14, &oobp[1], + (eccVal >> 8) & 0xff); + + /* Write ECC in oob[2,3,4] */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 13, &oobp[2], + eccVal & 0xff); /* ECC 12 */ + + if (numEccBytes >= 9) + eccVal = REG_UMI_BCH_WR_ECC_2; + + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 12, &oobp[3], + (eccVal >> 24) & 0xff); /* ECC11 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 11, &oobp[4], + (eccVal >> 16) & 0xff); /* ECC10 */ + + /* Always Skip BI in oob[5] */ + } else { + /* Always Skip BI in oob[0] */ + + /* Now fill in the ECC bytes */ + if (numEccBytes >= 13) + eccVal = REG_UMI_BCH_WR_ECC_3; + + /* Usually skip CM in oob[1,2] */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 15, &oobp[1], + (eccVal >> 16) & 0xff); + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 14, &oobp[2], + (eccVal >> 8) & 0xff); + + /* Write ECC in oob[3-15] */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 13, &oobp[3], + eccVal & 0xff); /* ECC12 */ + + if (numEccBytes >= 9) + eccVal = REG_UMI_BCH_WR_ECC_2; + + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 12, &oobp[4], + (eccVal >> 24) & 0xff); /* ECC11 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 11, &oobp[5], + (eccVal >> 16) & 0xff); /* ECC10 */ + } + + /* Fill in the remainder of ECC locations */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 10, &oobp[6], + (eccVal >> 8) & 0xff); /* ECC9 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 9, &oobp[7], + eccVal & 0xff); /* ECC8 */ + + if (numEccBytes >= 5) + eccVal = REG_UMI_BCH_WR_ECC_1; + + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 8, &oobp[8], + (eccVal >> 24) & 0xff); /* ECC7 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 7, &oobp[9], + (eccVal >> 16) & 0xff); /* ECC6 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 6, &oobp[10], + (eccVal >> 8) & 0xff); /* ECC5 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 5, &oobp[11], + eccVal & 0xff); /* ECC4 */ + + if (numEccBytes >= 1) + eccVal = REG_UMI_BCH_WR_ECC_0; + + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 4, &oobp[12], + (eccVal >> 24) & 0xff); /* ECC3 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 3, &oobp[13], + (eccVal >> 16) & 0xff); /* ECC2 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 2, &oobp[14], + (eccVal >> 8) & 0xff); /* ECC1 */ + NAND_BCM_UMI_ECC_WRITE(numEccBytes, 1, &oobp[15], + eccVal & 0xff); /* ECC0 */ +} +#endif + +#endif /* NAND_BCM_UMI_H */ diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c index 92320a64327..271b8e735e8 100644 --- a/drivers/mtd/nand/nand_ecc.c +++ b/drivers/mtd/nand/nand_ecc.c @@ -150,20 +150,19 @@ static const char addressbits[256] = { }; /** - * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256/512-byte + * __nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256/512-byte * block - * @mtd: MTD block structure * @buf: input buffer with raw data + * @eccsize: data bytes per ecc step (256 or 512) * @code: output buffer with ECC */ -int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf, +void __nand_calculate_ecc(const unsigned char *buf, unsigned int eccsize, unsigned char *code) { int i; const uint32_t *bp = (uint32_t *)buf; /* 256 or 512 bytes/ecc */ - const uint32_t eccsize_mult = - (((struct nand_chip *)mtd->priv)->ecc.size) >> 8; + const uint32_t eccsize_mult = eccsize >> 8; uint32_t cur; /* current value in buffer */ /* rp0..rp15..rp17 are the various accumulated parities (per byte) */ uint32_t rp0, rp1, rp2, rp3, rp4, rp5, rp6, rp7; @@ -412,6 +411,22 @@ int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf, (invparity[par & 0x55] << 2) | (invparity[rp17] << 1) | (invparity[rp16] << 0); +} +EXPORT_SYMBOL(__nand_calculate_ecc); + +/** + * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256/512-byte + * block + * @mtd: MTD block structure + * @buf: input buffer with raw data + * @code: output buffer with ECC + */ +int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf, + unsigned char *code) +{ + __nand_calculate_ecc(buf, + ((struct nand_chip *)mtd->priv)->ecc.size, code); + return 0; } EXPORT_SYMBOL(nand_calculate_ecc); diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index cd0711b83ac..7281000fef2 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -161,7 +161,7 @@ MODULE_PARM_DESC(overridesize, "Specifies the NAND Flash size overriding the I MODULE_PARM_DESC(cache_file, "File to use to cache nand pages instead of memory"); /* The largest possible page size */ -#define NS_LARGEST_PAGE_SIZE 2048 +#define NS_LARGEST_PAGE_SIZE 4096 /* The prefix for simulator output */ #define NS_OUTPUT_PREFIX "[nandsim]" @@ -259,7 +259,8 @@ MODULE_PARM_DESC(cache_file, "File to use to cache nand pages instead of mem #define OPT_SMARTMEDIA 0x00000010 /* SmartMedia technology chips */ #define OPT_AUTOINCR 0x00000020 /* page number auto inctimentation is possible */ #define OPT_PAGE512_8BIT 0x00000040 /* 512-byte page chips with 8-bit bus width */ -#define OPT_LARGEPAGE (OPT_PAGE2048) /* 2048-byte page chips */ +#define OPT_PAGE4096 0x00000080 /* 4096-byte page chips */ +#define OPT_LARGEPAGE (OPT_PAGE2048 | OPT_PAGE4096) /* 2048 & 4096-byte page chips */ #define OPT_SMALLPAGE (OPT_PAGE256 | OPT_PAGE512) /* 256 and 512-byte page chips */ /* Remove action bits ftom state */ @@ -588,6 +589,8 @@ static int init_nandsim(struct mtd_info *mtd) ns->options |= OPT_PAGE512_8BIT; } else if (ns->geom.pgsz == 2048) { ns->options |= OPT_PAGE2048; + } else if (ns->geom.pgsz == 4096) { + ns->options |= OPT_PAGE4096; } else { NS_ERR("init_nandsim: unknown page size %u\n", ns->geom.pgsz); return -EIO; diff --git a/drivers/mtd/nand/nomadik_nand.c b/drivers/mtd/nand/nomadik_nand.c index 7c302d55910..66123419f65 100644 --- a/drivers/mtd/nand/nomadik_nand.c +++ b/drivers/mtd/nand/nomadik_nand.c @@ -216,7 +216,7 @@ static int nomadik_nand_resume(struct device *dev) return 0; } -static struct dev_pm_ops nomadik_nand_pm_ops = { +static const struct dev_pm_ops nomadik_nand_pm_ops = { .suspend = nomadik_nand_suspend, .resume = nomadik_nand_resume, }; diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c index 4e16c6f5bdd..8d467315f02 100644 --- a/drivers/mtd/nand/plat_nand.c +++ b/drivers/mtd/nand/plat_nand.c @@ -34,7 +34,12 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) { struct platform_nand_data *pdata = pdev->dev.platform_data; struct plat_nand_data *data; - int res = 0; + struct resource *res; + int err = 0; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENXIO; /* Allocate memory for the device structure (and zero it) */ data = kzalloc(sizeof(struct plat_nand_data), GFP_KERNEL); @@ -43,12 +48,18 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) return -ENOMEM; } - data->io_base = ioremap(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); + if (!request_mem_region(res->start, resource_size(res), + dev_name(&pdev->dev))) { + dev_err(&pdev->dev, "request_mem_region failed\n"); + err = -EBUSY; + goto out_free; + } + + data->io_base = ioremap(res->start, resource_size(res)); if (data->io_base == NULL) { dev_err(&pdev->dev, "ioremap failed\n"); - kfree(data); - return -EIO; + err = -EIO; + goto out_release_io; } data->chip.priv = &data; @@ -74,24 +85,24 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) /* Handle any platform specific setup */ if (pdata->ctrl.probe) { - res = pdata->ctrl.probe(pdev); - if (res) + err = pdata->ctrl.probe(pdev); + if (err) goto out; } /* Scan to find existance of the device */ if (nand_scan(&data->mtd, 1)) { - res = -ENXIO; + err = -ENXIO; goto out; } #ifdef CONFIG_MTD_PARTITIONS if (pdata->chip.part_probe_types) { - res = parse_mtd_partitions(&data->mtd, + err = parse_mtd_partitions(&data->mtd, pdata->chip.part_probe_types, &data->parts, 0); - if (res > 0) { - add_mtd_partitions(&data->mtd, data->parts, res); + if (err > 0) { + add_mtd_partitions(&data->mtd, data->parts, err); return 0; } } @@ -99,14 +110,14 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) pdata->chip.set_parts(data->mtd.size, &pdata->chip); if (pdata->chip.partitions) { data->parts = pdata->chip.partitions; - res = add_mtd_partitions(&data->mtd, data->parts, + err = add_mtd_partitions(&data->mtd, data->parts, pdata->chip.nr_partitions); } else #endif - res = add_mtd_device(&data->mtd); + err = add_mtd_device(&data->mtd); - if (!res) - return res; + if (!err) + return err; nand_release(&data->mtd); out: @@ -114,8 +125,11 @@ out: pdata->ctrl.remove(pdev); platform_set_drvdata(pdev, NULL); iounmap(data->io_base); +out_release_io: + release_mem_region(res->start, resource_size(res)); +out_free: kfree(data); - return res; + return err; } /* @@ -125,6 +139,9 @@ static int __devexit plat_nand_remove(struct platform_device *pdev) { struct plat_nand_data *data = platform_get_drvdata(pdev); struct platform_nand_data *pdata = pdev->dev.platform_data; + struct resource *res; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); nand_release(&data->mtd); #ifdef CONFIG_MTD_PARTITIONS @@ -134,6 +151,7 @@ static int __devexit plat_nand_remove(struct platform_device *pdev) if (pdata->ctrl.remove) pdata->ctrl.remove(pdev); iounmap(data->io_base); + release_mem_region(res->start, resource_size(res)); kfree(data); return 0; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 68b5b3a486a..fa6e9c7fe51 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -774,7 +774,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, chip->select_chip = s3c2410_nand_select_chip; chip->chip_delay = 50; chip->priv = nmtd; - chip->options = 0; + chip->options = set->options; chip->controller = &info->controller; switch (info->cpu_type) { diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c index 73af8324d0d..863513c3b69 100644 --- a/drivers/mtd/nand/txx9ndfmc.c +++ b/drivers/mtd/nand/txx9ndfmc.c @@ -429,11 +429,10 @@ static int __exit txx9ndfmc_remove(struct platform_device *dev) chip = mtd->priv; txx9_priv = chip->priv; + nand_release(mtd); #ifdef CONFIG_MTD_PARTITIONS - del_mtd_partitions(mtd); kfree(drvdata->parts[i]); #endif - del_mtd_device(mtd); kfree(txx9_priv->mtdname); kfree(txx9_priv); } diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index 86c4f6dcdc6..75f38b95811 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -112,10 +112,24 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state) unsigned long timeout; u32 syscfg; - if (state == FL_RESETING) { - int i; + if (state == FL_RESETING || state == FL_PREPARING_ERASE || + state == FL_VERIFYING_ERASE) { + int i = 21; + unsigned int intr_flags = ONENAND_INT_MASTER; + + switch (state) { + case FL_RESETING: + intr_flags |= ONENAND_INT_RESET; + break; + case FL_PREPARING_ERASE: + intr_flags |= ONENAND_INT_ERASE; + break; + case FL_VERIFYING_ERASE: + i = 101; + break; + } - for (i = 0; i < 20; i++) { + while (--i) { udelay(1); intr = read_reg(c, ONENAND_REG_INTERRUPT); if (intr & ONENAND_INT_MASTER) @@ -126,7 +140,7 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state) wait_err("controller error", state, ctrl, intr); return -EIO; } - if (!(intr & ONENAND_INT_RESET)) { + if ((intr & intr_flags) != intr_flags) { wait_err("timeout", state, ctrl, intr); return -EIO; } diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index ff66e4330aa..f63b1db3ffb 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1,17 +1,19 @@ /* * linux/drivers/mtd/onenand/onenand_base.c * - * Copyright (C) 2005-2007 Samsung Electronics + * Copyright © 2005-2009 Samsung Electronics + * Copyright © 2007 Nokia Corporation + * * Kyungmin Park <kyungmin.park@samsung.com> * * Credits: * Adrian Hunter <ext-adrian.hunter@nokia.com>: * auto-placement support, read-while load support, various fixes - * Copyright (C) Nokia Corporation, 2007 * * Vishak G <vishak.g at samsung.com>, Rohit Hagargundgi <h.rohit at samsung.com> * Flex-OneNAND support - * Copyright (C) Samsung Electronics, 2008 + * Amul Kumar Saha <amul.saha at samsung.com> + * OTP support * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -32,6 +34,13 @@ #include <asm/io.h> +/* + * Multiblock erase if number of blocks to erase is 2 or more. + * Maximum number of blocks for simultaneous erase is 64. + */ +#define MB_ERASE_MIN_BLK_COUNT 2 +#define MB_ERASE_MAX_BLK_COUNT 64 + /* Default Flex-OneNAND boundary and lock respectively */ static int flex_bdry[MAX_DIES * 2] = { -1, 0, -1, 0 }; @@ -43,6 +52,18 @@ MODULE_PARM_DESC(flex_bdry, "SLC Boundary information for Flex-OneNAND" " : 0->Set boundary in unlocked status" " : 1->Set boundary in locked status"); +/* Default OneNAND/Flex-OneNAND OTP options*/ +static int otp; + +module_param(otp, int, 0400); +MODULE_PARM_DESC(otp, "Corresponding behaviour of OneNAND in OTP" + "Syntax : otp=LOCK_TYPE" + "LOCK_TYPE : Keys issued, for specific OTP Lock type" + " : 0 -> Default (No Blocks Locked)" + " : 1 -> OTP Block lock" + " : 2 -> 1st Block lock" + " : 3 -> BOTH OTP Block and 1st Block lock"); + /** * onenand_oob_128 - oob info for Flex-Onenand with 4KB page * For now, we expose only 64 out of 80 ecc bytes @@ -339,6 +360,8 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le break; case ONENAND_CMD_ERASE: + case ONENAND_CMD_MULTIBLOCK_ERASE: + case ONENAND_CMD_ERASE_VERIFY: case ONENAND_CMD_BUFFERRAM: case ONENAND_CMD_OTP_ACCESS: block = onenand_block(this, addr); @@ -483,7 +506,7 @@ static int onenand_wait(struct mtd_info *mtd, int state) if (interrupt & flags) break; - if (state != FL_READING) + if (state != FL_READING && state != FL_PREPARING_ERASE) cond_resched(); } /* To get correct interrupt status in timeout case */ @@ -500,25 +523,40 @@ static int onenand_wait(struct mtd_info *mtd, int state) int ecc = onenand_read_ecc(this); if (ecc) { if (ecc & ONENAND_ECC_2BIT_ALL) { - printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc); + printk(KERN_ERR "%s: ECC error = 0x%04x\n", + __func__, ecc); mtd->ecc_stats.failed++; return -EBADMSG; } else if (ecc & ONENAND_ECC_1BIT_ALL) { - printk(KERN_DEBUG "onenand_wait: correctable ECC error = 0x%04x\n", ecc); + printk(KERN_DEBUG "%s: correctable ECC error = 0x%04x\n", + __func__, ecc); mtd->ecc_stats.corrected++; } } } else if (state == FL_READING) { - printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); + printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n", + __func__, ctrl, interrupt); + return -EIO; + } + + if (state == FL_PREPARING_ERASE && !(interrupt & ONENAND_INT_ERASE)) { + printk(KERN_ERR "%s: mb erase timeout! ctrl=0x%04x intr=0x%04x\n", + __func__, ctrl, interrupt); + return -EIO; + } + + if (!(interrupt & ONENAND_INT_MASTER)) { + printk(KERN_ERR "%s: timeout! ctrl=0x%04x intr=0x%04x\n", + __func__, ctrl, interrupt); return -EIO; } /* If there's controller error, it's a real error */ if (ctrl & ONENAND_CTRL_ERROR) { - printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n", - ctrl); + printk(KERN_ERR "%s: controller error = 0x%04x\n", + __func__, ctrl); if (ctrl & ONENAND_CTRL_LOCK) - printk(KERN_ERR "onenand_wait: it's locked error.\n"); + printk(KERN_ERR "%s: it's locked error.\n", __func__); return -EIO; } @@ -1015,7 +1053,8 @@ static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status) /* We are attempting to reread, so decrement stats.failed * which was incremented by onenand_wait due to read failure */ - printk(KERN_INFO "onenand_recover_lsb: Attempting to recover from uncorrectable read\n"); + printk(KERN_INFO "%s: Attempting to recover from uncorrectable read\n", + __func__); mtd->ecc_stats.failed--; /* Issue the LSB page recovery command */ @@ -1046,7 +1085,8 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0; int writesize = this->writesize; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_mlc_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + __func__, (unsigned int) from, (int) len); if (ops->mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -1057,7 +1097,8 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, /* Do not allow reads past end of device */ if (from + len > mtd->size) { - printk(KERN_ERR "onenand_mlc_read_ops_nolock: Attempt read beyond end of device\n"); + printk(KERN_ERR "%s: Attempt read beyond end of device\n", + __func__); ops->retlen = 0; ops->oobretlen = 0; return -EINVAL; @@ -1146,7 +1187,8 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0, boundary = 0; int writesize = this->writesize; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + __func__, (unsigned int) from, (int) len); if (ops->mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -1157,7 +1199,8 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, /* Do not allow reads past end of device */ if ((from + len) > mtd->size) { - printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n"); + printk(KERN_ERR "%s: Attempt read beyond end of device\n", + __func__); ops->retlen = 0; ops->oobretlen = 0; return -EINVAL; @@ -1275,7 +1318,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, from += ops->ooboffs; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + __func__, (unsigned int) from, (int) len); /* Initialize return length value */ ops->oobretlen = 0; @@ -1288,7 +1332,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, column = from & (mtd->oobsize - 1); if (unlikely(column >= oobsize)) { - printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n"); + printk(KERN_ERR "%s: Attempted to start read outside oob\n", + __func__); return -EINVAL; } @@ -1296,7 +1341,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, if (unlikely(from >= mtd->size || column + len > ((mtd->size >> this->page_shift) - (from >> this->page_shift)) * oobsize)) { - printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n"); + printk(KERN_ERR "%s: Attempted to read beyond end of device\n", + __func__); return -EINVAL; } @@ -1319,7 +1365,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, ret = onenand_recover_lsb(mtd, from, ret); if (ret && ret != -EBADMSG) { - printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret); + printk(KERN_ERR "%s: read failed = 0x%x\n", + __func__, ret); break; } @@ -1450,20 +1497,21 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state) if (interrupt & ONENAND_INT_READ) { int ecc = onenand_read_ecc(this); if (ecc & ONENAND_ECC_2BIT_ALL) { - printk(KERN_INFO "onenand_bbt_wait: ecc error = 0x%04x" - ", controller error 0x%04x\n", ecc, ctrl); + printk(KERN_WARNING "%s: ecc error = 0x%04x, " + "controller error 0x%04x\n", + __func__, ecc, ctrl); return ONENAND_BBT_READ_ECC_ERROR; } } else { - printk(KERN_ERR "onenand_bbt_wait: read timeout!" - "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); + printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n", + __func__, ctrl, interrupt); return ONENAND_BBT_READ_FATAL_ERROR; } /* Initial bad block case: 0x2400 or 0x0400 */ if (ctrl & ONENAND_CTRL_ERROR) { - printk(KERN_DEBUG "onenand_bbt_wait: " - "controller error = 0x%04x\n", ctrl); + printk(KERN_DEBUG "%s: controller error = 0x%04x\n", + __func__, ctrl); return ONENAND_BBT_READ_ERROR; } @@ -1487,14 +1535,16 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, size_t len = ops->ooblen; u_char *buf = ops->oobbuf; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %zi\n", + __func__, (unsigned int) from, len); /* Initialize return value */ ops->oobretlen = 0; /* Do not allow reads past end of device */ if (unlikely((from + len) > mtd->size)) { - printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n"); + printk(KERN_ERR "%s: Attempt read beyond end of device\n", + __func__); return ONENAND_BBT_READ_FATAL_ERROR; } @@ -1661,21 +1711,23 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, /* Wait for any existing operation to clear */ onenand_panic_wait(mtd); - DEBUG(MTD_DEBUG_LEVEL3, "onenand_panic_write: to = 0x%08x, len = %i\n", - (unsigned int) to, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ *retlen = 0; /* Do not allow writes past end of device */ if (unlikely((to + len) > mtd->size)) { - printk(KERN_ERR "onenand_panic_write: Attempt write to past end of device\n"); + printk(KERN_ERR "%s: Attempt write to past end of device\n", + __func__); return -EINVAL; } /* Reject writes, which are not page aligned */ if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { - printk(KERN_ERR "onenand_panic_write: Attempt to write not page aligned data\n"); + printk(KERN_ERR "%s: Attempt to write not page aligned data\n", + __func__); return -EINVAL; } @@ -1711,7 +1763,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, } if (ret) { - printk(KERN_ERR "onenand_panic_write: write failed %d\n", ret); + printk(KERN_ERR "%s: write failed %d\n", __func__, ret); break; } @@ -1792,7 +1844,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, u_char *oobbuf; int ret = 0; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ ops->retlen = 0; @@ -1800,13 +1853,15 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /* Do not allow writes past end of device */ if (unlikely((to + len) > mtd->size)) { - printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n"); + printk(KERN_ERR "%s: Attempt write to past end of device\n", + __func__); return -EINVAL; } /* Reject writes, which are not page aligned */ if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { - printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n"); + printk(KERN_ERR "%s: Attempt to write not page aligned data\n", + __func__); return -EINVAL; } @@ -1879,7 +1934,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, onenand_update_bufferram(mtd, prev, !ret && !prev_subpage); if (ret) { written -= prevlen; - printk(KERN_ERR "onenand_write_ops_nolock: write failed %d\n", ret); + printk(KERN_ERR "%s: write failed %d\n", + __func__, ret); break; } @@ -1887,7 +1943,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /* Only check verify write turn on */ ret = onenand_verify(mtd, buf - len, to - len, len); if (ret) - printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); + printk(KERN_ERR "%s: verify failed %d\n", + __func__, ret); break; } @@ -1905,14 +1962,16 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /* In partial page write we don't update bufferram */ onenand_update_bufferram(mtd, to, !ret && !subpage); if (ret) { - printk(KERN_ERR "onenand_write_ops_nolock: write failed %d\n", ret); + printk(KERN_ERR "%s: write failed %d\n", + __func__, ret); break; } /* Only check verify write turn on */ ret = onenand_verify(mtd, buf, to, thislen); if (ret) { - printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); + printk(KERN_ERR "%s: verify failed %d\n", + __func__, ret); break; } @@ -1968,7 +2027,8 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, to += ops->ooboffs; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ ops->oobretlen = 0; @@ -1981,14 +2041,15 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, column = to & (mtd->oobsize - 1); if (unlikely(column >= oobsize)) { - printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n"); + printk(KERN_ERR "%s: Attempted to start write outside oob\n", + __func__); return -EINVAL; } /* For compatibility with NAND: Do not allow write past end of page */ if (unlikely(column + len > oobsize)) { - printk(KERN_ERR "onenand_write_oob_nolock: " - "Attempt to write past end of page\n"); + printk(KERN_ERR "%s: Attempt to write past end of page\n", + __func__); return -EINVAL; } @@ -1996,7 +2057,8 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, if (unlikely(to >= mtd->size || column + len > ((mtd->size >> this->page_shift) - (to >> this->page_shift)) * oobsize)) { - printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n"); + printk(KERN_ERR "%s: Attempted to write past end of device\n", + __func__); return -EINVAL; } @@ -2038,13 +2100,14 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, ret = this->wait(mtd, FL_WRITING); if (ret) { - printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret); + printk(KERN_ERR "%s: write failed %d\n", __func__, ret); break; } ret = onenand_verify_oob(mtd, oobbuf, to); if (ret) { - printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret); + printk(KERN_ERR "%s: verify failed %d\n", + __func__, ret); break; } @@ -2140,78 +2203,186 @@ static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allo return bbm->isbad_bbt(mtd, ofs, allowbbt); } + +static int onenand_multiblock_erase_verify(struct mtd_info *mtd, + struct erase_info *instr) +{ + struct onenand_chip *this = mtd->priv; + loff_t addr = instr->addr; + int len = instr->len; + unsigned int block_size = (1 << this->erase_shift); + int ret = 0; + + while (len) { + this->command(mtd, ONENAND_CMD_ERASE_VERIFY, addr, block_size); + ret = this->wait(mtd, FL_VERIFYING_ERASE); + if (ret) { + printk(KERN_ERR "%s: Failed verify, block %d\n", + __func__, onenand_block(this, addr)); + instr->state = MTD_ERASE_FAILED; + instr->fail_addr = addr; + return -1; + } + len -= block_size; + addr += block_size; + } + return 0; +} + /** - * onenand_erase - [MTD Interface] erase block(s) + * onenand_multiblock_erase - [Internal] erase block(s) using multiblock erase * @param mtd MTD device structure * @param instr erase instruction + * @param region erase region * - * Erase one ore more blocks + * Erase one or more blocks up to 64 block at a time */ -static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) +static int onenand_multiblock_erase(struct mtd_info *mtd, + struct erase_info *instr, + unsigned int block_size) { struct onenand_chip *this = mtd->priv; - unsigned int block_size; loff_t addr = instr->addr; - loff_t len = instr->len; - int ret = 0, i; - struct mtd_erase_region_info *region = NULL; - loff_t region_end = 0; + int len = instr->len; + int eb_count = 0; + int ret = 0; + int bdry_block = 0; - DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len); + instr->state = MTD_ERASING; - /* Do not allow erase past end of device */ - if (unlikely((len + addr) > mtd->size)) { - printk(KERN_ERR "onenand_erase: Erase past end of device\n"); - return -EINVAL; + if (ONENAND_IS_DDP(this)) { + loff_t bdry_addr = this->chipsize >> 1; + if (addr < bdry_addr && (addr + len) > bdry_addr) + bdry_block = bdry_addr >> this->erase_shift; } - if (FLEXONENAND(this)) { - /* Find the eraseregion of this address */ - i = flexonenand_region(mtd, addr); - region = &mtd->eraseregions[i]; + /* Pre-check bbs */ + while (len) { + /* Check if we have a bad block, we do not erase bad blocks */ + if (onenand_block_isbad_nolock(mtd, addr, 0)) { + printk(KERN_WARNING "%s: attempt to erase a bad block " + "at addr 0x%012llx\n", + __func__, (unsigned long long) addr); + instr->state = MTD_ERASE_FAILED; + return -EIO; + } + len -= block_size; + addr += block_size; + } - block_size = region->erasesize; - region_end = region->offset + region->erasesize * region->numblocks; + len = instr->len; + addr = instr->addr; - /* Start address within region must align on block boundary. - * Erase region's start offset is always block start address. - */ - if (unlikely((addr - region->offset) & (block_size - 1))) { - printk(KERN_ERR "onenand_erase: Unaligned address\n"); - return -EINVAL; + /* loop over 64 eb batches */ + while (len) { + struct erase_info verify_instr = *instr; + int max_eb_count = MB_ERASE_MAX_BLK_COUNT; + + verify_instr.addr = addr; + verify_instr.len = 0; + + /* do not cross chip boundary */ + if (bdry_block) { + int this_block = (addr >> this->erase_shift); + + if (this_block < bdry_block) { + max_eb_count = min(max_eb_count, + (bdry_block - this_block)); + } } - } else { - block_size = 1 << this->erase_shift; - /* Start address must align on block boundary */ - if (unlikely(addr & (block_size - 1))) { - printk(KERN_ERR "onenand_erase: Unaligned address\n"); - return -EINVAL; + eb_count = 0; + + while (len > block_size && eb_count < (max_eb_count - 1)) { + this->command(mtd, ONENAND_CMD_MULTIBLOCK_ERASE, + addr, block_size); + onenand_invalidate_bufferram(mtd, addr, block_size); + + ret = this->wait(mtd, FL_PREPARING_ERASE); + if (ret) { + printk(KERN_ERR "%s: Failed multiblock erase, " + "block %d\n", __func__, + onenand_block(this, addr)); + instr->state = MTD_ERASE_FAILED; + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + return -EIO; + } + + len -= block_size; + addr += block_size; + eb_count++; + } + + /* last block of 64-eb series */ + cond_resched(); + this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); + onenand_invalidate_bufferram(mtd, addr, block_size); + + ret = this->wait(mtd, FL_ERASING); + /* Check if it is write protected */ + if (ret) { + printk(KERN_ERR "%s: Failed erase, block %d\n", + __func__, onenand_block(this, addr)); + instr->state = MTD_ERASE_FAILED; + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + return -EIO; + } + + len -= block_size; + addr += block_size; + eb_count++; + + /* verify */ + verify_instr.len = eb_count * block_size; + if (onenand_multiblock_erase_verify(mtd, &verify_instr)) { + instr->state = verify_instr.state; + instr->fail_addr = verify_instr.fail_addr; + return -EIO; } - } - /* Length must align on block boundary */ - if (unlikely(len & (block_size - 1))) { - printk(KERN_ERR "onenand_erase: Length not block aligned\n"); - return -EINVAL; } + return 0; +} - instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; - /* Grab the lock and see if the device is available */ - onenand_get_device(mtd, FL_ERASING); +/** + * onenand_block_by_block_erase - [Internal] erase block(s) using regular erase + * @param mtd MTD device structure + * @param instr erase instruction + * @param region erase region + * @param block_size erase block size + * + * Erase one or more blocks one block at a time + */ +static int onenand_block_by_block_erase(struct mtd_info *mtd, + struct erase_info *instr, + struct mtd_erase_region_info *region, + unsigned int block_size) +{ + struct onenand_chip *this = mtd->priv; + loff_t addr = instr->addr; + int len = instr->len; + loff_t region_end = 0; + int ret = 0; + + if (region) { + /* region is set for Flex-OneNAND */ + region_end = region->offset + region->erasesize * region->numblocks; + } - /* Loop through the blocks */ instr->state = MTD_ERASING; + /* Loop through the blocks */ while (len) { cond_resched(); /* Check if we have a bad block, we do not erase bad blocks */ if (onenand_block_isbad_nolock(mtd, addr, 0)) { - printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%012llx\n", (unsigned long long) addr); + printk(KERN_WARNING "%s: attempt to erase a bad block " + "at addr 0x%012llx\n", + __func__, (unsigned long long) addr); instr->state = MTD_ERASE_FAILED; - goto erase_exit; + return -EIO; } this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); @@ -2221,11 +2392,11 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) ret = this->wait(mtd, FL_ERASING); /* Check, if it is write protected */ if (ret) { - printk(KERN_ERR "onenand_erase: Failed erase, block %d\n", - onenand_block(this, addr)); + printk(KERN_ERR "%s: Failed erase, block %d\n", + __func__, onenand_block(this, addr)); instr->state = MTD_ERASE_FAILED; instr->fail_addr = addr; - goto erase_exit; + return -EIO; } len -= block_size; @@ -2241,25 +2412,88 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) if (len & (block_size - 1)) { /* FIXME: This should be handled at MTD partitioning level. */ - printk(KERN_ERR "onenand_erase: Unaligned address\n"); - goto erase_exit; + printk(KERN_ERR "%s: Unaligned address\n", + __func__); + return -EIO; } } + } + return 0; +} + +/** + * onenand_erase - [MTD Interface] erase block(s) + * @param mtd MTD device structure + * @param instr erase instruction + * + * Erase one or more blocks + */ +static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) +{ + struct onenand_chip *this = mtd->priv; + unsigned int block_size; + loff_t addr = instr->addr; + loff_t len = instr->len; + int ret = 0; + struct mtd_erase_region_info *region = NULL; + loff_t region_offset = 0; + + DEBUG(MTD_DEBUG_LEVEL3, "%s: start=0x%012llx, len=%llu\n", __func__, + (unsigned long long) instr->addr, (unsigned long long) instr->len); + + /* Do not allow erase past end of device */ + if (unlikely((len + addr) > mtd->size)) { + printk(KERN_ERR "%s: Erase past end of device\n", __func__); + return -EINVAL; + } + + if (FLEXONENAND(this)) { + /* Find the eraseregion of this address */ + int i = flexonenand_region(mtd, addr); + + region = &mtd->eraseregions[i]; + block_size = region->erasesize; + + /* Start address within region must align on block boundary. + * Erase region's start offset is always block start address. + */ + region_offset = region->offset; + } else + block_size = 1 << this->erase_shift; + + /* Start address must align on block boundary */ + if (unlikely((addr - region_offset) & (block_size - 1))) { + printk(KERN_ERR "%s: Unaligned address\n", __func__); + return -EINVAL; + } + /* Length must align on block boundary */ + if (unlikely(len & (block_size - 1))) { + printk(KERN_ERR "%s: Length not block aligned\n", __func__); + return -EINVAL; } - instr->state = MTD_ERASE_DONE; + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; -erase_exit: + /* Grab the lock and see if the device is available */ + onenand_get_device(mtd, FL_ERASING); - ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; + if (region || instr->len < MB_ERASE_MIN_BLK_COUNT * block_size) { + /* region is set for Flex-OneNAND (no mb erase) */ + ret = onenand_block_by_block_erase(mtd, instr, + region, block_size); + } else { + ret = onenand_multiblock_erase(mtd, instr, block_size); + } /* Deselect and wake up anyone waiting on the device */ onenand_release_device(mtd); /* Do call back function */ - if (!ret) + if (!ret) { + instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); + } return ret; } @@ -2272,7 +2506,7 @@ erase_exit: */ static void onenand_sync(struct mtd_info *mtd) { - DEBUG(MTD_DEBUG_LEVEL3, "onenand_sync: called\n"); + DEBUG(MTD_DEBUG_LEVEL3, "%s: called\n", __func__); /* Grab the lock and see if the device is available */ onenand_get_device(mtd, FL_SYNCING); @@ -2406,7 +2640,8 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int /* Check lock status */ status = this->read_word(this->base + ONENAND_REG_WP_STATUS); if (!(status & wp_status_mask)) - printk(KERN_ERR "wp status = 0x%x\n", status); + printk(KERN_ERR "%s: wp status = 0x%x\n", + __func__, status); return 0; } @@ -2435,7 +2670,8 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int /* Check lock status */ status = this->read_word(this->base + ONENAND_REG_WP_STATUS); if (!(status & wp_status_mask)) - printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); + printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n", + __func__, block, status); } return 0; @@ -2502,7 +2738,8 @@ static int onenand_check_lock_status(struct onenand_chip *this) /* Check lock status */ status = this->read_word(this->base + ONENAND_REG_WP_STATUS); if (!(status & ONENAND_WP_US)) { - printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); + printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n", + __func__, block, status); return 0; } } @@ -2557,6 +2794,208 @@ static void onenand_unlock_all(struct mtd_info *mtd) #ifdef CONFIG_MTD_ONENAND_OTP +/** + * onenand_otp_command - Send OTP specific command to OneNAND device + * @param mtd MTD device structure + * @param cmd the command to be sent + * @param addr offset to read from or write to + * @param len number of bytes to read or write + */ +static int onenand_otp_command(struct mtd_info *mtd, int cmd, loff_t addr, + size_t len) +{ + struct onenand_chip *this = mtd->priv; + int value, block, page; + + /* Address translation */ + switch (cmd) { + case ONENAND_CMD_OTP_ACCESS: + block = (int) (addr >> this->erase_shift); + page = -1; + break; + + default: + block = (int) (addr >> this->erase_shift); + page = (int) (addr >> this->page_shift); + + if (ONENAND_IS_2PLANE(this)) { + /* Make the even block number */ + block &= ~1; + /* Is it the odd plane? */ + if (addr & this->writesize) + block++; + page >>= 1; + } + page &= this->page_mask; + break; + } + + if (block != -1) { + /* Write 'DFS, FBA' of Flash */ + value = onenand_block_address(this, block); + this->write_word(value, this->base + + ONENAND_REG_START_ADDRESS1); + } + + if (page != -1) { + /* Now we use page size operation */ + int sectors = 4, count = 4; + int dataram; + + switch (cmd) { + default: + if (ONENAND_IS_2PLANE(this) && cmd == ONENAND_CMD_PROG) + cmd = ONENAND_CMD_2X_PROG; + dataram = ONENAND_CURRENT_BUFFERRAM(this); + break; + } + + /* Write 'FPA, FSA' of Flash */ + value = onenand_page_address(page, sectors); + this->write_word(value, this->base + + ONENAND_REG_START_ADDRESS8); + + /* Write 'BSA, BSC' of DataRAM */ + value = onenand_buffer_address(dataram, sectors, count); + this->write_word(value, this->base + ONENAND_REG_START_BUFFER); + } + + /* Interrupt clear */ + this->write_word(ONENAND_INT_CLEAR, this->base + ONENAND_REG_INTERRUPT); + + /* Write command */ + this->write_word(cmd, this->base + ONENAND_REG_COMMAND); + + return 0; +} + +/** + * onenand_otp_write_oob_nolock - [Internal] OneNAND write out-of-band, specific to OTP + * @param mtd MTD device structure + * @param to offset to write to + * @param len number of bytes to write + * @param retlen pointer to variable to store the number of written bytes + * @param buf the data to write + * + * OneNAND write out-of-band only for OTP + */ +static int onenand_otp_write_oob_nolock(struct mtd_info *mtd, loff_t to, + struct mtd_oob_ops *ops) +{ + struct onenand_chip *this = mtd->priv; + int column, ret = 0, oobsize; + int written = 0; + u_char *oobbuf; + size_t len = ops->ooblen; + const u_char *buf = ops->oobbuf; + int block, value, status; + + to += ops->ooboffs; + + /* Initialize retlen, in case of early exit */ + ops->oobretlen = 0; + + oobsize = mtd->oobsize; + + column = to & (mtd->oobsize - 1); + + oobbuf = this->oob_buf; + + /* Loop until all data write */ + while (written < len) { + int thislen = min_t(int, oobsize, len - written); + + cond_resched(); + + block = (int) (to >> this->erase_shift); + /* + * Write 'DFS, FBA' of Flash + * Add: F100h DQ=DFS, FBA + */ + + value = onenand_block_address(this, block); + this->write_word(value, this->base + + ONENAND_REG_START_ADDRESS1); + + /* + * Select DataRAM for DDP + * Add: F101h DQ=DBS + */ + + value = onenand_bufferram_address(this, block); + this->write_word(value, this->base + + ONENAND_REG_START_ADDRESS2); + ONENAND_SET_NEXT_BUFFERRAM(this); + + /* + * Enter OTP access mode + */ + this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); + this->wait(mtd, FL_OTPING); + + /* We send data to spare ram with oobsize + * to prevent byte access */ + memcpy(oobbuf + column, buf, thislen); + + /* + * Write Data into DataRAM + * Add: 8th Word + * in sector0/spare/page0 + * DQ=XXFCh + */ + this->write_bufferram(mtd, ONENAND_SPARERAM, + oobbuf, 0, mtd->oobsize); + + onenand_otp_command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); + onenand_update_bufferram(mtd, to, 0); + if (ONENAND_IS_2PLANE(this)) { + ONENAND_SET_BUFFERRAM1(this); + onenand_update_bufferram(mtd, to + this->writesize, 0); + } + + ret = this->wait(mtd, FL_WRITING); + if (ret) { + printk(KERN_ERR "%s: write failed %d\n", __func__, ret); + break; + } + + /* Exit OTP access mode */ + this->command(mtd, ONENAND_CMD_RESET, 0, 0); + this->wait(mtd, FL_RESETING); + + status = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); + status &= 0x60; + + if (status == 0x60) { + printk(KERN_DEBUG "\nBLOCK\tSTATUS\n"); + printk(KERN_DEBUG "1st Block\tLOCKED\n"); + printk(KERN_DEBUG "OTP Block\tLOCKED\n"); + } else if (status == 0x20) { + printk(KERN_DEBUG "\nBLOCK\tSTATUS\n"); + printk(KERN_DEBUG "1st Block\tLOCKED\n"); + printk(KERN_DEBUG "OTP Block\tUN-LOCKED\n"); + } else if (status == 0x40) { + printk(KERN_DEBUG "\nBLOCK\tSTATUS\n"); + printk(KERN_DEBUG "1st Block\tUN-LOCKED\n"); + printk(KERN_DEBUG "OTP Block\tLOCKED\n"); + } else { + printk(KERN_DEBUG "Reboot to check\n"); + } + + written += thislen; + if (written == len) + break; + + to += mtd->writesize; + buf += thislen; + column = 0; + } + + ops->oobretlen = written; + + return ret; +} + /* Internal OTP operation */ typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len, size_t *retlen, u_char *buf); @@ -2659,11 +3098,11 @@ static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, struct mtd_oob_ops ops; int ret; - /* Enter OTP access mode */ - this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); - this->wait(mtd, FL_OTPING); - if (FLEXONENAND(this)) { + + /* Enter OTP access mode */ + this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); + this->wait(mtd, FL_OTPING); /* * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of * main area of page 49. @@ -2674,19 +3113,19 @@ static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, ops.oobbuf = NULL; ret = onenand_write_ops_nolock(mtd, mtd->writesize * 49, &ops); *retlen = ops.retlen; + + /* Exit OTP access mode */ + this->command(mtd, ONENAND_CMD_RESET, 0, 0); + this->wait(mtd, FL_RESETING); } else { ops.mode = MTD_OOB_PLACE; ops.ooblen = len; ops.oobbuf = buf; ops.ooboffs = 0; - ret = onenand_write_oob_nolock(mtd, from, &ops); + ret = onenand_otp_write_oob_nolock(mtd, from, &ops); *retlen = ops.oobretlen; } - /* Exit OTP access mode */ - this->command(mtd, ONENAND_CMD_RESET, 0, 0); - this->wait(mtd, FL_RESETING); - return ret; } @@ -2717,16 +3156,21 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, if (density < ONENAND_DEVICE_DENSITY_512Mb) otp_pages = 20; else - otp_pages = 10; + otp_pages = 50; if (mode == MTD_OTP_FACTORY) { from += mtd->writesize * otp_pages; - otp_pages = 64 - otp_pages; + otp_pages = ONENAND_PAGES_PER_BLOCK - otp_pages; } /* Check User/Factory boundary */ - if (((mtd->writesize * otp_pages) - (from + len)) < 0) - return 0; + if (mode == MTD_OTP_USER) { + if (mtd->writesize * otp_pages < from + len) + return 0; + } else { + if (mtd->writesize * otp_pages < len) + return 0; + } onenand_get_device(mtd, FL_OTPING); while (len > 0 && otp_pages > 0) { @@ -2749,13 +3193,12 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, *retlen += sizeof(struct otp_info); } else { size_t tmp_retlen; - int size = len; ret = action(mtd, from, len, &tmp_retlen, buf); - buf += size; - len -= size; - *retlen += size; + buf += tmp_retlen; + len -= tmp_retlen; + *retlen += tmp_retlen; if (ret) break; @@ -2868,21 +3311,11 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, u_char *buf = FLEXONENAND(this) ? this->page_buf : this->oob_buf; size_t retlen; int ret; + unsigned int otp_lock_offset = ONENAND_OTP_LOCK_OFFSET; memset(buf, 0xff, FLEXONENAND(this) ? this->writesize : mtd->oobsize); /* - * Note: OTP lock operation - * OTP block : 0xXXFC - * 1st block : 0xXXF3 (If chip support) - * Both : 0xXXF0 (If chip support) - */ - if (FLEXONENAND(this)) - buf[FLEXONENAND_OTP_LOCK_OFFSET] = 0xFC; - else - buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC; - - /* * Write lock mark to 8th word of sector0 of page0 of the spare0. * We write 16 bytes spare area instead of 2 bytes. * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of @@ -2892,10 +3325,30 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, from = 0; len = FLEXONENAND(this) ? mtd->writesize : 16; + /* + * Note: OTP lock operation + * OTP block : 0xXXFC XX 1111 1100 + * 1st block : 0xXXF3 (If chip support) XX 1111 0011 + * Both : 0xXXF0 (If chip support) XX 1111 0000 + */ + if (FLEXONENAND(this)) + otp_lock_offset = FLEXONENAND_OTP_LOCK_OFFSET; + + /* ONENAND_OTP_AREA | ONENAND_OTP_BLOCK0 | ONENAND_OTP_AREA_BLOCK0 */ + if (otp == 1) + buf[otp_lock_offset] = 0xFC; + else if (otp == 2) + buf[otp_lock_offset] = 0xF3; + else if (otp == 3) + buf[otp_lock_offset] = 0xF0; + else if (otp != 0) + printk(KERN_DEBUG "[OneNAND] Invalid option selected for OTP\n"); + ret = onenand_otp_walk(mtd, from, len, &retlen, buf, do_otp_lock, MTD_OTP_USER); return ret ? : retlen; } + #endif /* CONFIG_MTD_ONENAND_OTP */ /** @@ -3172,7 +3625,8 @@ static int flexonenand_check_blocks_erased(struct mtd_info *mtd, int start, int break; if (i != mtd->oobsize) { - printk(KERN_WARNING "Block %d not erased.\n", block); + printk(KERN_WARNING "%s: Block %d not erased.\n", + __func__, block); return 1; } } @@ -3204,8 +3658,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die, blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0; if (boundary >= blksperdie) { - printk(KERN_ERR "flexonenand_set_boundary: Invalid boundary value. " - "Boundary not changed.\n"); + printk(KERN_ERR "%s: Invalid boundary value. " + "Boundary not changed.\n", __func__); return -EINVAL; } @@ -3214,7 +3668,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die, new = boundary + (die * this->density_mask); ret = flexonenand_check_blocks_erased(mtd, min(old, new) + 1, max(old, new)); if (ret) { - printk(KERN_ERR "flexonenand_set_boundary: Please erase blocks before boundary change\n"); + printk(KERN_ERR "%s: Please erase blocks " + "before boundary change\n", __func__); return ret; } @@ -3227,12 +3682,12 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die, thisboundary = this->read_word(this->base + ONENAND_DATARAM); if ((thisboundary >> FLEXONENAND_PI_UNLOCK_SHIFT) != 3) { - printk(KERN_ERR "flexonenand_set_boundary: boundary locked\n"); + printk(KERN_ERR "%s: boundary locked\n", __func__); ret = 1; goto out; } - printk(KERN_INFO "flexonenand_set_boundary: Changing die %d boundary: %d%s\n", + printk(KERN_INFO "Changing die %d boundary: %d%s\n", die, boundary, lock ? "(Locked)" : "(Unlocked)"); addr = die ? this->diesize[0] : 0; @@ -3243,7 +3698,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die, this->command(mtd, ONENAND_CMD_ERASE, addr, 0); ret = this->wait(mtd, FL_ERASING); if (ret) { - printk(KERN_ERR "flexonenand_set_boundary: Failed PI erase for Die %d\n", die); + printk(KERN_ERR "%s: Failed PI erase for Die %d\n", + __func__, die); goto out; } @@ -3251,7 +3707,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die, this->command(mtd, ONENAND_CMD_PROG, addr, 0); ret = this->wait(mtd, FL_WRITING); if (ret) { - printk(KERN_ERR "flexonenand_set_boundary: Failed PI write for Die %d\n", die); + printk(KERN_ERR "%s: Failed PI write for Die %d\n", + __func__, die); goto out; } @@ -3408,8 +3865,8 @@ static void onenand_resume(struct mtd_info *mtd) if (this->state == FL_PM_SUSPENDED) onenand_release_device(mtd); else - printk(KERN_ERR "resume() called for the chip which is not" - "in suspended state\n"); + printk(KERN_ERR "%s: resume() called for the chip which is not " + "in suspended state\n", __func__); } /** @@ -3464,7 +3921,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) if (!this->page_buf) { this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL); if (!this->page_buf) { - printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n"); + printk(KERN_ERR "%s: Can't allocate page_buf\n", + __func__); return -ENOMEM; } this->options |= ONENAND_PAGEBUF_ALLOC; @@ -3472,7 +3930,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) if (!this->oob_buf) { this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL); if (!this->oob_buf) { - printk(KERN_ERR "onenand_scan(): Can't allocate oob_buf\n"); + printk(KERN_ERR "%s: Can't allocate oob_buf\n", + __func__); if (this->options & ONENAND_PAGEBUF_ALLOC) { this->options &= ~ONENAND_PAGEBUF_ALLOC; kfree(this->page_buf); @@ -3505,8 +3964,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) break; default: - printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n", - mtd->oobsize); + printk(KERN_WARNING "%s: No OOB scheme defined for oobsize %d\n", + __func__, mtd->oobsize); mtd->subpage_sft = 0; /* To prevent kernel oops */ this->ecclayout = &onenand_oob_32; diff --git a/drivers/mtd/tests/Makefile b/drivers/mtd/tests/Makefile index c1d50133500..b44dcab940d 100644 --- a/drivers/mtd/tests/Makefile +++ b/drivers/mtd/tests/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_MTD_TESTS) += mtd_speedtest.o obj-$(CONFIG_MTD_TESTS) += mtd_stresstest.o obj-$(CONFIG_MTD_TESTS) += mtd_subpagetest.o obj-$(CONFIG_MTD_TESTS) += mtd_torturetest.o +obj-$(CONFIG_MTD_TESTS) += mtd_nandecctest.o diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c new file mode 100644 index 00000000000..c1f31051784 --- /dev/null +++ b/drivers/mtd/tests/mtd_nandecctest.c @@ -0,0 +1,87 @@ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/random.h> +#include <linux/string.h> +#include <linux/bitops.h> +#include <linux/jiffies.h> +#include <linux/mtd/nand_ecc.h> + +#if defined(CONFIG_MTD_NAND) || defined(CONFIG_MTD_NAND_MODULE) + +static void inject_single_bit_error(void *data, size_t size) +{ + unsigned long offset = random32() % (size * BITS_PER_BYTE); + + __change_bit(offset, data); +} + +static unsigned char data[512]; +static unsigned char error_data[512]; + +static int nand_ecc_test(const size_t size) +{ + unsigned char code[3]; + unsigned char error_code[3]; + char testname[30]; + + BUG_ON(sizeof(data) < size); + + sprintf(testname, "nand-ecc-%zu", size); + + get_random_bytes(data, size); + + memcpy(error_data, data, size); + inject_single_bit_error(error_data, size); + + __nand_calculate_ecc(data, size, code); + __nand_calculate_ecc(error_data, size, error_code); + __nand_correct_data(error_data, code, error_code, size); + + if (!memcmp(data, error_data, size)) { + printk(KERN_INFO "mtd_nandecctest: ok - %s\n", testname); + return 0; + } + + printk(KERN_ERR "mtd_nandecctest: not ok - %s\n", testname); + + printk(KERN_DEBUG "hexdump of data:\n"); + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, + data, size, false); + printk(KERN_DEBUG "hexdump of error data:\n"); + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, + error_data, size, false); + + return -1; +} + +#else + +static int nand_ecc_test(const size_t size) +{ + return 0; +} + +#endif + +static int __init ecc_test_init(void) +{ + srandom32(jiffies); + + nand_ecc_test(256); + nand_ecc_test(512); + + return 0; +} + +static void __exit ecc_test_exit(void) +{ +} + +module_init(ecc_test_init); +module_exit(ecc_test_exit); + +MODULE_DESCRIPTION("NAND ECC function test module"); +MODULE_AUTHOR("Akinobu Mita"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c index 5553cd4eab2..5813920e79a 100644 --- a/drivers/mtd/tests/mtd_oobtest.c +++ b/drivers/mtd/tests/mtd_oobtest.c @@ -343,7 +343,6 @@ static int scan_for_bad_eraseblocks(void) printk(PRINT_PREF "error: cannot allocate memory\n"); return -ENOMEM; } - memset(bbt, 0 , ebcnt); printk(PRINT_PREF "scanning for bad eraseblocks\n"); for (i = 0; i < ebcnt; ++i) { @@ -392,7 +391,6 @@ static int __init mtd_oobtest_init(void) mtd->writesize, ebcnt, pgcnt, mtd->oobsize); err = -ENOMEM; - mtd->erasesize = mtd->erasesize; readbuf = kmalloc(mtd->erasesize, GFP_KERNEL); if (!readbuf) { printk(PRINT_PREF "error: cannot allocate memory\n"); @@ -476,18 +474,10 @@ static int __init mtd_oobtest_init(void) use_len_max = mtd->ecclayout->oobavail; vary_offset = 1; simple_srand(5); - printk(PRINT_PREF "writing OOBs of whole device\n"); - for (i = 0; i < ebcnt; ++i) { - if (bbt[i]) - continue; - err = write_eraseblock(i); - if (err) - goto out; - if (i % 256 == 0) - printk(PRINT_PREF "written up to eraseblock %u\n", i); - cond_resched(); - } - printk(PRINT_PREF "written %u eraseblocks\n", i); + + err = write_whole_device(); + if (err) + goto out; /* Check all eraseblocks */ use_offset = 0; diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c index 103cac480fe..ce17cbe918c 100644 --- a/drivers/mtd/tests/mtd_pagetest.c +++ b/drivers/mtd/tests/mtd_pagetest.c @@ -523,6 +523,7 @@ static int __init mtd_pagetest_init(void) do_div(tmp, mtd->erasesize); ebcnt = tmp; pgcnt = mtd->erasesize / mtd->writesize; + pgsize = mtd->writesize; printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, " "page size %u, count of eraseblocks %u, pages per " diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c index 88a72e9c8be..277786ebaa2 100644 --- a/drivers/mtd/ubi/kapi.c +++ b/drivers/mtd/ubi/kapi.c @@ -22,6 +22,8 @@ #include <linux/module.h> #include <linux/err.h> +#include <linux/namei.h> +#include <linux/fs.h> #include <asm/div64.h> #include "ubi.h" @@ -280,6 +282,44 @@ struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name, EXPORT_SYMBOL_GPL(ubi_open_volume_nm); /** + * ubi_open_volume_path - open UBI volume by its character device node path. + * @pathname: volume character device node path + * @mode: open mode + * + * This function is similar to 'ubi_open_volume()', but opens a volume the path + * to its character device node. + */ +struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode) +{ + int error, ubi_num, vol_id; + struct ubi_volume_desc *ret; + struct inode *inode; + struct path path; + + dbg_gen("open volume %s, mode %d", pathname, mode); + + if (!pathname || !*pathname) + return ERR_PTR(-EINVAL); + + error = kern_path(pathname, LOOKUP_FOLLOW, &path); + if (error) + return ERR_PTR(error); + + inode = path.dentry->d_inode; + ubi_num = ubi_major2num(imajor(inode)); + vol_id = iminor(inode) - 1; + + if (vol_id >= 0 && ubi_num >= 0) + ret = ubi_open_volume(ubi_num, vol_id, mode); + else + ret = ERR_PTR(-ENODEV); + + path_put(&path); + return ret; +} +EXPORT_SYMBOL_GPL(ubi_open_volume_path); + +/** * ubi_close_volume - close UBI volume. * @desc: volume descriptor */ diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c index 74fdc40c862..c1d7b880c79 100644 --- a/drivers/mtd/ubi/upd.c +++ b/drivers/mtd/ubi/upd.c @@ -147,12 +147,14 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol, } if (bytes == 0) { + err = ubi_wl_flush(ubi); + if (err) + return err; + err = clear_update_marker(ubi, vol, 0); if (err) return err; - err = ubi_wl_flush(ubi); - if (!err) - vol->updating = 0; + vol->updating = 0; } vol->upd_buf = vmalloc(ubi->leb_size); @@ -362,16 +364,16 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol, ubi_assert(vol->upd_received <= vol->upd_bytes); if (vol->upd_received == vol->upd_bytes) { + err = ubi_wl_flush(ubi); + if (err) + return err; /* The update is finished, clear the update marker */ err = clear_update_marker(ubi, vol, vol->upd_bytes); if (err) return err; - err = ubi_wl_flush(ubi); - if (err == 0) { - vol->updating = 0; - err = to_write; - vfree(vol->upd_buf); - } + vol->updating = 0; + err = to_write; + vfree(vol->upd_buf); } return err; |