From f248bd5d8be37c741ef62386d82e4975723e09c3 Mon Sep 17 00:00:00 2001 From: aleph Date: Thu, 21 Apr 2011 09:15:52 +0000 Subject: [PATCH] mt29f NAND driver: remove kblock interface. A very simple FTL layer will be added to implement kblock interface on top of this low level driver. git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4864 38d2e660-2303-0410-9eaa-f027e97ec537 --- bertos/cpu/cortex-m3/drv/mt29f_sam3.c | 177 +++++++++----------------- bertos/drv/mt29f.h | 48 +++---- 2 files changed, 76 insertions(+), 149 deletions(-) diff --git a/bertos/cpu/cortex-m3/drv/mt29f_sam3.c b/bertos/cpu/cortex-m3/drv/mt29f_sam3.c index 25d4537b..a0a7bfd3 100644 --- a/bertos/cpu/cortex-m3/drv/mt29f_sam3.c +++ b/bertos/cpu/cortex-m3/drv/mt29f_sam3.c @@ -46,7 +46,6 @@ #include #include -#include #include #include @@ -87,12 +86,6 @@ #define MT29F_DATA_ADDR 0x60000000 -struct Mt29fHardware -{ - uint8_t status; -}; - - /* * Translate flash page index plus a byte offset * in the five address cycles format needed by NAND. @@ -108,7 +101,7 @@ struct Mt29fHardware * Fourth BA15 BA14 BA13 BA12 BA11 BA10 BA9 BA8 * Fifth LOW LOW LOW LOW LOW LOW LOW BA16 */ -static void mt29f_getAddrCycles(block_idx_t page, size_t offset, uint32_t *cycle0, uint32_t *cycle1234) +static void getAddrCycles(uint32_t page, size_t offset, uint32_t *cycle0, uint32_t *cycle1234) { ASSERT(offset < MT29F_PAGE_SIZE); @@ -119,17 +112,17 @@ static void mt29f_getAddrCycles(block_idx_t page, size_t offset, uint32_t *cycle } -INLINE bool mt29f_isBusy(void) +INLINE bool nfcIsBusy(void) { return HWREG(NFC_CMD_BASE_ADDR + NFC_CMD_NFCCMD) & 0x8000000; } -INLINE bool mt29f_isCmdDone(void) +INLINE bool isCmdDone(void) { return SMC_SR & SMC_SR_CMDDONE; } -static bool mt29f_waitReadyBusy(void) +static bool waitReadyBusy(void) { time_t start = timer_clock(); @@ -150,7 +143,7 @@ static bool mt29f_waitReadyBusy(void) * Wait for transfer to complete until timeout. * If transfer completes return true, false in case of timeout. */ -static bool mt29f_waitTransferComplete(void) +static bool waitTransferComplete(void) { time_t start = timer_clock(); @@ -171,12 +164,12 @@ static bool mt29f_waitTransferComplete(void) /* * Send command to NAND and wait for completion. */ -static void mt29f_sendCommand(uint32_t cmd, +static void sendCommand(uint32_t cmd, int num_cycles, uint32_t cycle0, uint32_t cycle1234) { reg32_t *cmd_addr; - while (mt29f_isBusy()); + while (nfcIsBusy()); if (num_cycles == 5) SMC_ADDR = cycle0; @@ -184,15 +177,15 @@ static void mt29f_sendCommand(uint32_t cmd, cmd_addr = (reg32_t *)(NFC_CMD_BASE_ADDR + cmd); *cmd_addr = cycle1234; - while (!mt29f_isCmdDone()); + while (!isCmdDone()); } -static bool mt29f_isOperationComplete(void) +static bool isOperationComplete(void) { uint8_t status; - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | MT29F_CSID | NFC_CMD_ACYCLE_NONE | MT29F_CMD_STATUS << 2, 0, 0, 0); @@ -202,38 +195,38 @@ static bool mt29f_isOperationComplete(void) } -static void mt29f_reset(void) +static void chipReset(void) { - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | MT29F_CSID | NFC_CMD_ACYCLE_NONE | MT29F_CMD_RESET << 2, 0, 0, 0); - mt29f_waitReadyBusy(); + waitReadyBusy(); } /** * Erase the whole block containing given page. */ -int mt29f_blockErase(Mt29f *fls, block_idx_t page) +int mt29f_blockErase(Mt29f *chip, uint32_t page) { uint32_t cycle0; uint32_t cycle1234; - mt29f_getAddrCycles(page, 0, &cycle0, &cycle1234); + getAddrCycles(page, 0, &cycle0, &cycle1234); - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | MT29F_CSID | NFC_CMD_ACYCLE_THREE | NFC_CMD_VCMD2 | (MT29F_CMD_ERASE_2 << 10) | (MT29F_CMD_ERASE_1 << 2), 3, 0, cycle1234 >> 8); - mt29f_waitReadyBusy(); + waitReadyBusy(); - if (!mt29f_isOperationComplete()) + if (!isOperationComplete()) { LOG_ERR("mt29f: error erasing block\n"); - fls->hw->status |= MT29F_ERR_ERASE; + chip->status |= MT29F_ERR_ERASE; return -1; } @@ -244,18 +237,18 @@ int mt29f_blockErase(Mt29f *fls, block_idx_t page) /** * Read Device ID and configuration codes. */ -bool mt29f_getDevId(Mt29f *fls, uint8_t dev_id[5]) +bool mt29f_getDevId(Mt29f *chip, uint8_t dev_id[5]) { - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | NFC_CMD_NFCEN | MT29F_CSID | NFC_CMD_ACYCLE_ONE | MT29F_CMD_READID << 2, 1, 0, 0); - mt29f_waitReadyBusy(); - if (!mt29f_waitTransferComplete()) + waitReadyBusy(); + if (!waitTransferComplete()) { LOG_ERR("mt29f: getDevId timeout\n"); - fls->hw->status |= MT29F_ERR_RD_TMOUT; + chip->status |= MT29F_ERR_RD_TMOUT; return false; } @@ -264,78 +257,72 @@ bool mt29f_getDevId(Mt29f *fls, uint8_t dev_id[5]) } -static size_t mt29f_readDirect(struct KBlock *blk, block_idx_t idx, void *buf, size_t offset, size_t size) +size_t mt29f_pageRead(Mt29f *chip, uint32_t page, void *buf, size_t offset, size_t size) { - Mt29f *fls = FLASH_CAST(blk); uint32_t cycle0; uint32_t cycle1234; ASSERT(offset == 0); - ASSERT(size == blk->blk_size); - LOG_INFO("mt29f_readDirect\n"); + LOG_INFO("mt29f_pageRead\n"); - mt29f_getAddrCycles(idx, 0, &cycle0, &cycle1234); + getAddrCycles(page, 0, &cycle0, &cycle1234); - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | NFC_CMD_NFCEN | MT29F_CSID | NFC_CMD_ACYCLE_FIVE | NFC_CMD_VCMD2 | (MT29F_CMD_READ_2 << 10) | (MT29F_CMD_READ_1 << 2), 5, cycle0, cycle1234); - mt29f_waitReadyBusy(); - if (!mt29f_waitTransferComplete()) + waitReadyBusy(); + if (!waitTransferComplete()) { LOG_ERR("mt29f: read timeout\n"); - fls->hw->status |= MT29F_ERR_RD_TMOUT; + chip->status |= MT29F_ERR_RD_TMOUT; return 0; } - if (!kblock_buffered(blk) && (buf != (void *)NFC_SRAM_BASE_ADDR)) - memcpy(buf, (void *)NFC_SRAM_BASE_ADDR, size); + memcpy(buf, (void *)NFC_SRAM_BASE_ADDR, size); return size; } -static size_t mt29f_writeDirect(struct KBlock *blk, block_idx_t idx, const void *_buf, size_t offset, size_t size) +size_t mt29f_pageWrite(Mt29f *chip, uint32_t page, const void *buf, size_t offset, size_t size) { - Mt29f *fls = FLASH_CAST(blk); uint32_t cycle0; uint32_t cycle1234; ASSERT(offset == 0); - ASSERT(size == blk->blk_size); - LOG_INFO("mt29f_writeDirect\n"); + LOG_INFO("mt29f_pageWrite\n"); - if (!kblock_buffered(blk) && (_buf != (void *)NFC_SRAM_BASE_ADDR)) - memcpy((void *)NFC_SRAM_BASE_ADDR, _buf, size); + memcpy((void *)NFC_SRAM_BASE_ADDR, buf, size); - mt29f_getAddrCycles(idx, 0, &cycle0, &cycle1234); + getAddrCycles(page, 0, &cycle0, &cycle1234); - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | NFC_CMD_NFCWR | NFC_CMD_NFCEN | MT29F_CSID | NFC_CMD_ACYCLE_FIVE | MT29F_CMD_WRITE_1 << 2, 5, cycle0, cycle1234); - if (!mt29f_waitTransferComplete()) + if (!waitTransferComplete()) { LOG_ERR("mt29f: write timeout\n"); - fls->hw->status |= MT29F_ERR_WR_TMOUT; + chip->status |= MT29F_ERR_WR_TMOUT; return 0; } - mt29f_sendCommand( + sendCommand( NFC_CMD_NFCCMD | MT29F_CSID | NFC_CMD_ACYCLE_NONE | MT29F_CMD_WRITE_2 << 2, 0, 0, 0); - mt29f_waitReadyBusy(); + waitReadyBusy(); - if (!mt29f_isOperationComplete()) + if (!isOperationComplete()) { LOG_ERR("mt29f: error writing page\n"); - fls->hw->status |= MT29F_ERR_WRITE; + chip->status |= MT29F_ERR_WRITE; return 0; } @@ -343,62 +330,20 @@ static size_t mt29f_writeDirect(struct KBlock *blk, block_idx_t idx, const void } -static int mt29f_error(struct KBlock *blk) +int mt29f_error(Mt29f *chip) { - Mt29f *fls = FLASH_CAST(blk); - return fls->hw->status; + return chip->status; } -static void mt29f_clearerror(struct KBlock *blk) +void mt29f_clearError(Mt29f *chip) { - Mt29f *fls = FLASH_CAST(blk); - fls->hw->status = 0; + chip->status = 0; } -static const KBlockVTable mt29f_buffered_vt = -{ - .readDirect = mt29f_readDirect, - .writeDirect = mt29f_writeDirect, - - .readBuf = kblock_swReadBuf, - .writeBuf = kblock_swWriteBuf, - .load = kblock_swLoad, - .store = kblock_swStore, - - .close = kblock_swClose, - - .error = mt29f_error, - .clearerr = mt29f_clearerror, -}; - - -static const KBlockVTable mt29f_unbuffered_vt = -{ - .readDirect = mt29f_readDirect, - .writeDirect = mt29f_writeDirect, - - .close = kblock_swClose, - - .error = mt29f_error, - .clearerr = mt29f_clearerror, -}; - - -static struct Mt29fHardware mt29f_hw; - - -static void common_init(Mt29f *fls) +static void initPio(Mt29f *chip) { - memset(fls, 0, sizeof(*fls)); - DB(fls->blk.priv.type = KBT_MT29F); - - fls->hw = &mt29f_hw; - - fls->blk.blk_size = MT29F_PAGE_SIZE; - fls->blk.blk_cnt = MT29F_SIZE / MT29F_PAGE_SIZE; - /* * TODO: put following stuff in hw_ file dependent (and configurable cs?) * Parameters for MT29F8G08AAD @@ -420,7 +365,11 @@ static void common_init(Mt29f *fls) PIOD_PUER = MT29F_PINS_PORTD; pmc_periphEnable(SMC_SDRAMC_ID); +} + +static void initSmc(Mt29f *chip) +{ SMC_SETUP0 = SMC_SETUP_NWE_SETUP(0) | SMC_SETUP_NCS_WR_SETUP(0) | SMC_SETUP_NRD_SETUP(0) @@ -455,25 +404,19 @@ static void common_init(Mt29f *fls) SMC_CTRL = 0; SMC_CTRL = SMC_CTRL_NFCEN; - mt29f_reset(); + // Enable ECC, 1 ECC per 256 bytes + SMC_ECC_CTRL = SMC_ECC_CTRL_SWRST; + SMC_ECC_MD = SMC_ECC_MD_ECC_PAGESIZE_PS2048_64 | SMC_ECC_MD_TYPCORREC_C256B; } -void mt29f_init(Mt29f *fls) +void mt29f_init(Mt29f *chip) { - common_init(fls); - fls->blk.priv.vt = &mt29f_buffered_vt; - fls->blk.priv.flags |= KB_BUFFERED; - fls->blk.priv.buf = (void *)NFC_SRAM_BASE_ADDR; - - // Load the first block in the cache - mt29f_readDirect(&fls->blk, 0, (void *)NFC_SRAM_BASE_ADDR, 0, MT29F_PAGE_SIZE); -} + initPio(chip); + initSmc(chip); + mt29f_clearError(chip); -void mt29f_initUnbuffered(Mt29f *fls) -{ - common_init(fls); - fls->blk.priv.vt = &mt29f_unbuffered_vt; + chipReset(); } diff --git a/bertos/drv/mt29f.h b/bertos/drv/mt29f.h index 9548423d..9f5fd1b6 100644 --- a/bertos/drv/mt29f.h +++ b/bertos/drv/mt29f.h @@ -41,15 +41,15 @@ * * Example usage: * \code -* Mt29f fls; -* mt29f_init(&fls); +* Mt29f chip; +* mt29f_init(&chip); * // enable access only on desired blocks * // start block = 50, num blocks = 20 -* kblock_trim(&fls.blk, 50, 20); +* kblock_trim(&chip.blk, 50, 20); * // ... * // now write to the flash * // block number is automatically converted -* kblock_write(&fls.blk, 0, buf, 0, 128); +* kblock_write(&chip.blk, 0, buf, 0, 128); * \endcode * * \author Stefano Fedrigo @@ -65,17 +65,13 @@ #include "cfg/cfg_mt29f.h" #include -#include +//#include -#include -#include -#include - -#include +//#include /** - * \name Error codes + * \name Error codes. * \{ */ #define MT29F_ERR_ERASE BV(1) ///< Error erasing a block @@ -84,34 +80,22 @@ #define MT29F_ERR_WR_TMOUT BV(2) ///< Write timeout /** \} */ -struct Mt29fHardware; /** - * MT29F KBlock context structure. + * MT29F context. */ typedef struct Mt29f { - KBlock blk; ///< KBlock context - struct Mt29fHardware *hw; + uint8_t status; } Mt29f; -/* - * Kblock type ID. - */ -#define KBT_MT29F MAKE_ID('M', 'T', '2', '9') - -/** - * Convert + ASSERT from generic KBlock to Flash. - */ -INLINE Mt29f *FLASH_CAST(KBlock *fls) -{ - ASSERT(fls->priv.type == KBT_MT29F); - return (Mt29f *)fls; -} +void mt29f_init(Mt29f *chip); +bool mt29f_getDevId(Mt29f *chip, uint8_t dev_id[5]); +int mt29f_blockErase(Mt29f *chip, uint32_t blk); +size_t mt29f_pageRead(Mt29f *chip, uint32_t page, void *buf, size_t offset, size_t size); +size_t mt29f_pageWrite(Mt29f *chip, uint32_t page, const void *buf, size_t offset, size_t size); +int mt29f_error(Mt29f *chip); +void mt29f_clearError(Mt29f *chip); -void mt29f_init(Mt29f *fls); -void mt29f_initUnbuffered(Mt29f *fls); -int mt29f_blockErase(Mt29f *fls, block_idx_t page); -bool mt29f_getDevId(Mt29f *fls, uint8_t dev_id[5]); #endif /* DRV_MT29F_H */ -- 2.25.1