diff options
Diffstat (limited to 'package/uboot-xburst/files/cpu/mips/jz_mmc.c')
| -rw-r--r-- | package/uboot-xburst/files/cpu/mips/jz_mmc.c | 1416 |
1 files changed, 0 insertions, 1416 deletions
diff --git a/package/uboot-xburst/files/cpu/mips/jz_mmc.c b/package/uboot-xburst/files/cpu/mips/jz_mmc.c deleted file mode 100644 index b3c4e99604..0000000000 --- a/package/uboot-xburst/files/cpu/mips/jz_mmc.c +++ /dev/null @@ -1,1416 +0,0 @@ -/* - * (C) Copyright 2003 - * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <config.h> -#include <common.h> -#include <part.h> - -#if defined CONFIG_JZ4740 -#include <asm-mips/jz4740.h> - -#include "jz_mmc.h" - -#define CFG_MMC_BASE 0x80600000 -static int sd2_0 = 0; - -/* - * GPIO definition - */ -#if defined(CONFIG_SAKC) - -#define __msc_init_io() \ -do { \ - __gpio_as_input(GPIO_SD_CD_N); \ -} while (0) - -#else -#define __msc_init_io() \ -do { \ - __gpio_as_output(GPIO_SD_VCC_EN_N); \ - __gpio_as_input(GPIO_SD_CD_N); \ -} while (0) - -#define __msc_enable_power() \ -do { \ - __gpio_clear_pin(GPIO_SD_VCC_EN_N); \ -} while (0) - -#define __msc_disable_power() \ -do { \ - __gpio_set_pin(GPIO_SD_VCC_EN_N); \ -} while (0) - -#endif /* CONFIG_SAKE */ - -#define __msc_card_detected() \ -({ \ - int detected = 1; \ - __gpio_as_input(GPIO_SD_CD_N); \ - __gpio_disable_pull(GPIO_SD_CD_N); \ - if (!__gpio_get_pin(GPIO_SD_CD_N)) \ - detected = 0; \ - detected; \ -}) - -/* - * Local functions - */ - -#ifdef CONFIG_MMC -extern int -fat_register_device(block_dev_desc_t *dev_desc, int part_no); - -static block_dev_desc_t mmc_dev; - -block_dev_desc_t * mmc_get_dev(int dev) -{ - return ((block_dev_desc_t *)&mmc_dev); -} - -/* - * FIXME needs to read cid and csd info to determine block size - * and other parameters - */ -static uchar mmc_buf[MMC_BLOCK_SIZE]; -static int mmc_ready = 0; -static mmc_csd_t mmc_csd; -static int use_4bit; /* Use 4-bit data bus */ -/* - * MMC Events - */ -#define MMC_EVENT_NONE 0x00 /* No events */ -#define MMC_EVENT_RX_DATA_DONE 0x01 /* Rx data done */ -#define MMC_EVENT_TX_DATA_DONE 0x02 /* Tx data done */ -#define MMC_EVENT_PROG_DONE 0x04 /* Programming is done */ - - -#define MMC_IRQ_MASK() \ -do { \ - REG_MSC_IMASK = 0xffff; \ - REG_MSC_IREG = 0xffff; \ -} while (0) - -/* Stop the MMC clock and wait while it happens */ -static inline int jz_mmc_stop_clock(void) -{ - int timeout = 1000; - - REG_MSC_STRPCL = MSC_STRPCL_CLOCK_CONTROL_STOP; - - while (timeout && (REG_MSC_STAT & MSC_STAT_CLK_EN)) { - timeout--; - if (timeout == 0) { - return MMC_ERROR_TIMEOUT; - } - udelay(1); - } - return MMC_NO_ERROR; -} - -/* Start the MMC clock and operation */ -static inline int jz_mmc_start_clock(void) -{ - REG_MSC_STRPCL = MSC_STRPCL_CLOCK_CONTROL_START | MSC_STRPCL_START_OP; - return MMC_NO_ERROR; -} - -static inline u32 jz_mmc_calc_clkrt(int is_sd, u32 rate) -{ - u32 clkrt; - u32 clk_src = is_sd ? 24000000: 16000000; - - clkrt = 0; - while (rate < clk_src) - { - clkrt ++; - clk_src >>= 1; - } - return clkrt; -} - -/* Set the MMC clock frequency */ -void jz_mmc_set_clock(int sd, u32 rate) -{ - jz_mmc_stop_clock(); - - /* Select clock source of MSC */ - __cpm_select_msc_clk(sd); - - /* Set clock dividor of MSC */ - REG_MSC_CLKRT = jz_mmc_calc_clkrt(sd, rate); -} - -static int jz_mmc_check_status(struct mmc_request *request) -{ - u32 status = REG_MSC_STAT; - - /* Checking for response or data timeout */ - if (status & (MSC_STAT_TIME_OUT_RES | MSC_STAT_TIME_OUT_READ)) { - printf("MMC/SD timeout, MMC_STAT 0x%x CMD %d\n", status, request->cmd); - return MMC_ERROR_TIMEOUT; - } - - /* Checking for CRC error */ - if (status & (MSC_STAT_CRC_READ_ERROR | MSC_STAT_CRC_WRITE_ERROR | MSC_STAT_CRC_RES_ERR)) { - printf("MMC/CD CRC error, MMC_STAT 0x%x\n", status); - return MMC_ERROR_CRC; - } - - return MMC_NO_ERROR; -} - -/* Obtain response to the command and store it to response buffer */ -static void jz_mmc_get_response(struct mmc_request *request) -{ - int i; - u8 *buf; - u32 data; - - DEBUG(3, "fetch response for request %d, cmd %d\n", request->rtype, request->cmd); - - buf = request->response; - request->result = MMC_NO_ERROR; - - switch (request->rtype) { - case RESPONSE_R1: case RESPONSE_R1B: case RESPONSE_R6: - case RESPONSE_R3: case RESPONSE_R4: case RESPONSE_R5: - { - data = REG_MSC_RES; - buf[0] = (data >> 8) & 0xff; - buf[1] = data & 0xff; - data = REG_MSC_RES; - buf[2] = (data >> 8) & 0xff; - buf[3] = data & 0xff; - data = REG_MSC_RES; - buf[4] = data & 0xff; - - DEBUG(3, "request %d, response [%02x %02x %02x %02x %02x]\n", - request->rtype, buf[0], buf[1], buf[2], buf[3], buf[4]); - break; - } - case RESPONSE_R2_CID: case RESPONSE_R2_CSD: - { - for (i = 0; i < 16; i += 2) { - data = REG_MSC_RES; - buf[i] = (data >> 8) & 0xff; - buf[i+1] = data & 0xff; - } - DEBUG(3, "request %d, response [", request->rtype); -#if CONFIG_MMC_DEBUG_VERBOSE > 2 - if (g_mmc_debug >= 3) { - int n; - for (n = 0; n < 17; n++) - printk("%02x ", buf[n]); - printk("]\n"); - } -#endif - break; - } - case RESPONSE_NONE: - DEBUG(3, "No response\n"); - break; - - default: - DEBUG(3, "unhandled response type for request %d\n", request->rtype); - break; - } -} - -static int jz_mmc_receive_data(struct mmc_request *req) -{ - u32 stat, timeout, data, cnt; - u8 *buf = req->buffer; - u32 wblocklen = (u32)(req->block_len + 3) >> 2; /* length in word */ - - timeout = 0x3ffffff; - - while (timeout) { - timeout--; - stat = REG_MSC_STAT; - - if (stat & MSC_STAT_TIME_OUT_READ) - return MMC_ERROR_TIMEOUT; - else if (stat & MSC_STAT_CRC_READ_ERROR) - return MMC_ERROR_CRC; - else if (!(stat & MSC_STAT_DATA_FIFO_EMPTY) - || (stat & MSC_STAT_DATA_FIFO_AFULL)) { - /* Ready to read data */ - break; - } - udelay(1); - } - if (!timeout) - return MMC_ERROR_TIMEOUT; - - /* Read data from RXFIFO. It could be FULL or PARTIAL FULL */ - cnt = wblocklen; - while (cnt) { - data = REG_MSC_RXFIFO; - { - *buf++ = (u8)(data >> 0); - *buf++ = (u8)(data >> 8); - *buf++ = (u8)(data >> 16); - *buf++ = (u8)(data >> 24); - } - cnt --; - while (cnt && (REG_MSC_STAT & MSC_STAT_DATA_FIFO_EMPTY)) - ; - } - return MMC_NO_ERROR; -} - -static int jz_mmc_transmit_data(struct mmc_request *req) -{ -#if 0 - u32 nob = req->nob; - u32 wblocklen = (u32)(req->block_len + 3) >> 2; /* length in word */ - u8 *buf = req->buffer; - u32 *wbuf = (u32 *)buf; - u32 waligned = (((u32)buf & 0x3) == 0); /* word aligned ? */ - u32 stat, timeout, data, cnt; - - for (nob; nob >= 1; nob--) { - timeout = 0x3FFFFFF; - - while (timeout) { - timeout--; - stat = REG_MSC_STAT; - - if (stat & (MSC_STAT_CRC_WRITE_ERROR | MSC_STAT_CRC_WRITE_ERROR_NOSTS)) - return MMC_ERROR_CRC; - else if (!(stat & MSC_STAT_DATA_FIFO_FULL)) { - /* Ready to write data */ - break; - } - - udelay(1); - } - - if (!timeout) - return MMC_ERROR_TIMEOUT; - - /* Write data to TXFIFO */ - cnt = wblocklen; - while (cnt) { - while (REG_MSC_STAT & MSC_STAT_DATA_FIFO_FULL) - ; - - if (waligned) { - REG_MSC_TXFIFO = *wbuf++; - } - else { - data = *buf++ | (*buf++ << 8) | (*buf++ << 16) | (*buf++ << 24); - REG_MSC_TXFIFO = data; - } - - cnt--; - } - } -#endif - return MMC_NO_ERROR; -} - - -/* - * Name: int jz_mmc_exec_cmd() - * Function: send command to the card, and get a response - * Input: struct mmc_request *req : MMC/SD request - * Output: 0: right >0: error code - */ -int jz_mmc_exec_cmd(struct mmc_request *request) -{ - u32 cmdat = 0, events = 0; - int retval, timeout = 0x3fffff; - - /* Indicate we have no result yet */ - request->result = MMC_NO_RESPONSE; - if (request->cmd == MMC_CIM_RESET) { - /* On reset, 1-bit bus width */ - use_4bit = 0; - - /* Reset MMC/SD controller */ - __msc_reset(); - - /* On reset, drop MMC clock down */ - jz_mmc_set_clock(0, MMC_CLOCK_SLOW); - - /* On reset, stop MMC clock */ - jz_mmc_stop_clock(); - } - if (request->cmd == MMC_SEND_OP_COND) { - DEBUG(3, "Have an MMC card\n"); - /* always use 1bit for MMC */ - use_4bit = 0; - } - if (request->cmd == SET_BUS_WIDTH) { - if (request->arg == 0x2) { - printf("Use 4-bit bus width\n"); - use_4bit = 1; - } - else { - printf("Use 1-bit bus width\n"); - use_4bit = 0; - } - } - - /* stop clock */ - jz_mmc_stop_clock(); - - /* mask all interrupts */ - REG_MSC_IMASK = 0xffff; - - /* clear status */ - REG_MSC_IREG = 0xffff; - - /* use 4-bit bus width when possible */ - if (use_4bit) - cmdat |= MSC_CMDAT_BUS_WIDTH_4BIT; - - /* Set command type and events */ - switch (request->cmd) { - /* MMC core extra command */ - case MMC_CIM_RESET: - cmdat |= MSC_CMDAT_INIT; /* Initialization sequence sent prior to command */ - break; - - /* bc - broadcast - no response */ - case MMC_GO_IDLE_STATE: - case MMC_SET_DSR: - break; - - /* bcr - broadcast with response */ - case MMC_SEND_OP_COND: - case MMC_ALL_SEND_CID: - case MMC_GO_IRQ_STATE: - break; - - /* adtc - addressed with data transfer */ - case MMC_READ_DAT_UNTIL_STOP: - case MMC_READ_SINGLE_BLOCK: - case MMC_READ_MULTIPLE_BLOCK: - case SEND_SCR: - cmdat |= MSC_CMDAT_DATA_EN | MSC_CMDAT_READ; - events = MMC_EVENT_RX_DATA_DONE; - break; - - case MMC_WRITE_DAT_UNTIL_STOP: - case MMC_WRITE_BLOCK: - case MMC_WRITE_MULTIPLE_BLOCK: - case MMC_PROGRAM_CID: - case MMC_PROGRAM_CSD: - case MMC_SEND_WRITE_PROT: - case MMC_GEN_CMD: - case MMC_LOCK_UNLOCK: - cmdat |= MSC_CMDAT_DATA_EN | MSC_CMDAT_WRITE; - events = MMC_EVENT_TX_DATA_DONE | MMC_EVENT_PROG_DONE; - - break; - - case MMC_STOP_TRANSMISSION: - events = MMC_EVENT_PROG_DONE; - break; - - /* ac - no data transfer */ - default: - break; - } - - /* Set response type */ - switch (request->rtype) { - case RESPONSE_NONE: - break; - - case RESPONSE_R1B: - cmdat |= MSC_CMDAT_BUSY; - /*FALLTHRU*/ - case RESPONSE_R1: - cmdat |= MSC_CMDAT_RESPONSE_R1; - break; - case RESPONSE_R2_CID: - case RESPONSE_R2_CSD: - cmdat |= MSC_CMDAT_RESPONSE_R2; - break; - case RESPONSE_R3: - cmdat |= MSC_CMDAT_RESPONSE_R3; - break; - case RESPONSE_R4: - cmdat |= MSC_CMDAT_RESPONSE_R4; - break; - case RESPONSE_R5: - cmdat |= MSC_CMDAT_RESPONSE_R5; - break; - case RESPONSE_R6: - cmdat |= MSC_CMDAT_RESPONSE_R6; - break; - default: - break; - } - - /* Set command index */ - if (request->cmd == MMC_CIM_RESET) { - REG_MSC_CMD = MMC_GO_IDLE_STATE; - } else { - REG_MSC_CMD = request->cmd; - } - - /* Set argument */ - REG_MSC_ARG = request->arg; - - /* Set block length and nob */ - if (request->cmd == SEND_SCR) { /* get SCR from DataFIFO */ - REG_MSC_BLKLEN = 8; - REG_MSC_NOB = 1; - } else { - REG_MSC_BLKLEN = request->block_len; - REG_MSC_NOB = request->nob; - } - - /* Set command */ - REG_MSC_CMDAT = cmdat; - - DEBUG(1, "Send cmd %d cmdat: %x arg: %x resp %d\n", request->cmd, - cmdat, request->arg, request->rtype); - - /* Start MMC/SD clock and send command to card */ - jz_mmc_start_clock(); - - /* Wait for command completion */ - while (timeout-- && !(REG_MSC_STAT & MSC_STAT_END_CMD_RES)) - ; - - if (timeout == 0) - return MMC_ERROR_TIMEOUT; - - REG_MSC_IREG = MSC_IREG_END_CMD_RES; /* clear flag */ - - /* Check for status */ - retval = jz_mmc_check_status(request); - if (retval) { - return retval; - } - - /* Complete command with no response */ - if (request->rtype == RESPONSE_NONE) { - return MMC_NO_ERROR; - } - - /* Get response */ - jz_mmc_get_response(request); - - /* Start data operation */ - if (events & (MMC_EVENT_RX_DATA_DONE | MMC_EVENT_TX_DATA_DONE)) { - if (events & MMC_EVENT_RX_DATA_DONE) { - if (request->cmd == SEND_SCR) { - /* SD card returns SCR register as data. - MMC core expect it in the response buffer, - after normal response. */ - request->buffer = (u8 *)((u32)request->response + 5); - } - jz_mmc_receive_data(request); - } - - if (events & MMC_EVENT_TX_DATA_DONE) { - jz_mmc_transmit_data(request); - } - - /* Wait for Data Done */ - while (!(REG_MSC_IREG & MSC_IREG_DATA_TRAN_DONE)) - ; - REG_MSC_IREG = MSC_IREG_DATA_TRAN_DONE; /* clear status */ - } - - /* Wait for Prog Done event */ - if (events & MMC_EVENT_PROG_DONE) { - while (!(REG_MSC_IREG & MSC_IREG_PRG_DONE)) - ; - REG_MSC_IREG = MSC_IREG_PRG_DONE; /* clear status */ - } - - /* Command completed */ - - return MMC_NO_ERROR; /* return successfully */ -} - -int mmc_block_read(u8 *dst, ulong src, ulong len) -{ - - struct mmc_request request; - struct mmc_response_r1 r1; - int retval; - - if (len == 0) { - return 0; - } - mmc_simple_cmd(&request, MMC_SEND_STATUS, mmcinfo.rca, RESPONSE_R1); - retval = mmc_unpack_r1(&request, &r1, 0); - if (retval && (retval != MMC_ERROR_STATE_MISMATCH)) { - return retval; - } - - mmc_simple_cmd(&request, MMC_SET_BLOCKLEN, len, RESPONSE_R1); - if ((retval = mmc_unpack_r1(&request, &r1, 0))) { - return retval; - } - - if (sd2_0) - src /= len; - - mmc_send_cmd(&request, MMC_READ_SINGLE_BLOCK, src, 1,len, RESPONSE_R1, dst); - if ((retval = mmc_unpack_r1(&request, &r1, 0))) { - return retval; - } - return retval; -} - -int mmc_block_write(ulong dst, uchar *src, int len) -{ - return 0; -} - -int mmc_read(ulong src, uchar *dst, int size) -{ - ulong end, part_start, part_end, part_len, aligned_start, aligned_end; - ulong mmc_block_size, mmc_block_address; - - if (size == 0) { - return 0; - } - - if (!mmc_ready) { - printf("MMC card is not ready\n"); - return -1; - } - - mmc_block_size = MMC_BLOCK_SIZE; - mmc_block_address = ~(mmc_block_size - 1); - - src -= CFG_MMC_BASE; - end = src + size; - part_start = ~mmc_block_address & src; - part_end = ~mmc_block_address & end; - aligned_start = mmc_block_address & src; - aligned_end = mmc_block_address & end; - /* all block aligned accesses */ - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if (part_start) { - part_len = mmc_block_size - part_start; - debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) { - return -1; - } - memcpy(dst, mmc_buf+part_start, part_len); - dst += part_len; - src += part_len; - } - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) { - debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - - if ((mmc_block_read((uchar *)(dst), src, mmc_block_size)) < 0) { - return -1; - } - } - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - - if (part_end && src < end) { - if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { - return -1; - } - memcpy(dst, mmc_buf, part_end); - } - return 0; - -} - -int mmc_write(uchar *src, ulong dst, int size) -{ - ulong end, part_start, part_end, part_len, aligned_start, aligned_end; - ulong mmc_block_size, mmc_block_address; - - if (size == 0) { - return 0; - } - - if (!mmc_ready) { - printf("MMC card is not ready\n"); - return -1; - } - - mmc_block_size = MMC_BLOCK_SIZE; - mmc_block_address = ~(mmc_block_size - 1); - - dst -= CFG_MMC_BASE; - end = dst + size; - part_start = ~mmc_block_address & dst; - part_end = ~mmc_block_address & end; - aligned_start = mmc_block_address & dst; - aligned_end = mmc_block_address & end; - - /* all block aligned accesses */ - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if (part_start) { - part_len = mmc_block_size - part_start; - debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - (ulong)src, dst, end, part_start, part_end, aligned_start, aligned_end); - if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) { - return -1; - } - memcpy(mmc_buf+part_start, src, part_len); - if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < 0) { - return -1; - } - dst += part_len; - src += part_len; - } - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) { - debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if ((mmc_block_write(dst, (uchar *)src, mmc_block_size)) < 0) { - return -1; - } - } - debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if (part_end && dst < end) { - debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", - src, (ulong)dst, end, part_start, part_end, aligned_start, aligned_end); - if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { - return -1; - } - memcpy(mmc_buf, src, part_end); - if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0) { - return -1; - } - } - return 0; -} - -ulong mmc_bread(int dev_num, ulong blknr, ulong blkcnt, ulong *dst) -{ - ulong src; - int mmc_block_size = MMC_BLOCK_SIZE; - - src = blknr * mmc_block_size + CFG_MMC_BASE; - mmc_read(src, (uchar *)dst, blkcnt*mmc_block_size); - return blkcnt; -} - -int mmc_select_card(void) -{ - struct mmc_request request; - struct mmc_response_r1 r1; - int retval; - - mmc_simple_cmd(&request, MMC_SELECT_CARD, mmcinfo.rca, RESPONSE_R1B); - retval = mmc_unpack_r1(&request, &r1, 0); - if (retval) { - return retval; - } - - if (mmcinfo.sd) { - mmc_simple_cmd(&request, MMC_APP_CMD, mmcinfo.rca, RESPONSE_R1); - retval = mmc_unpack_r1(&request,&r1,0); - if (retval) { - return retval; - } -#if defined(MMC_BUS_WIDTH_1BIT) - mmc_simple_cmd(&request, SET_BUS_WIDTH, 1, RESPONSE_R1); -#else - mmc_simple_cmd(&request, SET_BUS_WIDTH, 2, RESPONSE_R1); -#endif - retval = mmc_unpack_r1(&request,&r1,0); - if (retval) { - return retval; - } - } - return 0; -} - -/* - * Configure card - */ -static void mmc_configure_card(void) -{ - u32 rate; - - /* Get card info */ - if (sd2_0) - mmcinfo.block_num = (mmcinfo.csd.c_size + 1) << 10; - else - mmcinfo.block_num = (mmcinfo.csd.c_size + 1) * (1 << (mmcinfo.csd.c_size_mult + 2)); - - mmcinfo.block_len = 1 << mmcinfo.csd.read_bl_len; - - /* Fix the clock rate */ - rate = mmc_tran_speed(mmcinfo.csd.tran_speed); - if (rate < MMC_CLOCK_SLOW) - rate = MMC_CLOCK_SLOW; - if ((mmcinfo.sd == 0) && (rate > MMC_CLOCK_FAST)) - rate = MMC_CLOCK_FAST; - if ((mmcinfo.sd) && (rate > SD_CLOCK_FAST)) - rate = SD_CLOCK_FAST; - - DEBUG(2,"mmc_configure_card: block_len=%d block_num=%d rate=%d\n", mmcinfo.block_len, mmcinfo.block_num, rate); - - jz_mmc_set_clock(mmcinfo.sd, rate); -} - -/* - * State machine routines to initialize card(s) - */ - -/* - CIM_SINGLE_CARD_ACQ (frequency at 400 kHz) - --- Must enter from GO_IDLE_STATE --- - 1. SD_SEND_OP_COND (SD Card) [CMD55] + [CMD41] - 2. SEND_OP_COND (Full Range) [CMD1] {optional} - 3. SEND_OP_COND (Set Range ) [CMD1] - If busy, delay and repeat step 2 - 4. ALL_SEND_CID [CMD2] - If timeout, set an error (no cards found) - 5. SET_RELATIVE_ADDR [CMD3] - 6. SEND_CSD [CMD9] - 7. SET_DSR [CMD4] Only call this if (csd.dsr_imp). - 8. Set clock frequency (check available in csd.tran_speed) - */ - -#define MMC_INIT_DOING 0 -#define MMC_INIT_PASSED 1 -#define MMC_INIT_FAILED 2 - -static int mmc_init_card_state(struct mmc_request *request) -{ - struct mmc_response_r1 r1; - struct mmc_response_r3 r3; - int retval; - int ocr = 0x40300000; - int limit_41 = 0; - - DEBUG(2,"mmc_init_card_state\n"); - - switch (request->cmd) { - case MMC_GO_IDLE_STATE: /* No response to parse */ - if (mmcinfo.sd) - mmc_simple_cmd(request, 8, 0x1aa, RESPONSE_R1); - else - mmc_simple_cmd(request, MMC_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3); - break; - - case 8: - retval = mmc_unpack_r1(request,&r1,mmcinfo.state); - mmc_simple_cmd(request, MMC_APP_CMD, 0, RESPONSE_R1); - break; - - case MMC_APP_CMD: - retval = mmc_unpack_r1(request,&r1,mmcinfo.state); - if (retval & (limit_41 < 100)) { - DEBUG(0, "mmc_init_card_state: unable to MMC_APP_CMD error=%d (%s)\n", - retval, mmc_result_to_string(retval)); - limit_41++; - mmc_simple_cmd(request, SD_SEND_OP_COND, ocr, RESPONSE_R3); - } else if (limit_41 < 100) { - limit_41++; - mmc_simple_cmd(request, SD_SEND_OP_COND, ocr, RESPONSE_R3); - } else{ - /* reset the card to idle*/ - mmc_simple_cmd(request, MMC_GO_IDLE_STATE, 0, RESPONSE_NONE); - mmcinfo.sd = 0; - } - break; - - case SD_SEND_OP_COND: - retval = mmc_unpack_r3(request, &r3); - if (retval) { - /* Try MMC card */ - mmc_simple_cmd(request, MMC_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3); - break; - } - - DEBUG(2,"mmc_init_card_state: read ocr value = 0x%08x\n", r3.ocr); - - if(!(r3.ocr & MMC_CARD_BUSY || ocr == 0)){ - udelay(10000); - mmc_simple_cmd(request, MMC_APP_CMD, 0, RESPONSE_R1); - } - else { - /* Set the data bus width to 4 bits */ - mmcinfo.sd = 1; /* SD Card ready */ - mmcinfo.state = CARD_STATE_READY; - mmc_simple_cmd(request, MMC_ALL_SEND_CID, 0, RESPONSE_R2_CID); - } - break; - - case MMC_SEND_OP_COND: - retval = mmc_unpack_r3(request, &r3); - if (retval) { - DEBUG(0,"mmc_init_card_state: failed SEND_OP_COND error=%d (%s)\n", - retval, mmc_result_to_string(retval)); - return MMC_INIT_FAILED; - } - - DEBUG(2,"mmc_init_card_state: read ocr value = 0x%08x\n", r3.ocr); - if (!(r3.ocr & MMC_CARD_BUSY)) { - mmc_simple_cmd(request, MMC_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3); - } - else { - mmcinfo.sd = 0; /* MMC Card ready */ - mmcinfo.state = CARD_STATE_READY; - mmc_simple_cmd(request, MMC_ALL_SEND_CID, 0, RESPONSE_R2_CID); - } - break; - - case MMC_ALL_SEND_CID: - retval = mmc_unpack_cid( request, &mmcinfo.cid ); - mmc_dev.if_type = IF_TYPE_MMC; - mmc_dev.part_type = PART_TYPE_DOS; - mmc_dev.dev = 0; - mmc_dev.lun = 0; - mmc_dev.type = 0; - /* FIXME fill in the correct size (is set to 32MByte) */ - mmc_dev.blksz = 512; - mmc_dev.lba = 0x10000; - mmc_dev.removable = 0; - - /*FIXME:ignore CRC error for CMD2/CMD9/CMD10 */ - if ( retval && (retval != MMC_ERROR_CRC)) { - DEBUG(0,"mmc_init_card_state: unable to ALL_SEND_CID error=%d (%s)\n", - retval, mmc_result_to_string(retval)); - return MMC_INIT_FAILED; - } - mmcinfo.state = CARD_STATE_IDENT; - if(mmcinfo.sd) - mmc_simple_cmd(request, MMC_SET_RELATIVE_ADDR, 0, RESPONSE_R6); - else - mmc_simple_cmd(request, MMC_SET_RELATIVE_ADDR, ID_TO_RCA(mmcinfo.id) << 16, RESPONSE_R1); - break; - - case MMC_SET_RELATIVE_ADDR: - if (mmcinfo.sd) { - retval = mmc_unpack_r6(request, &r1, mmcinfo.state, &mmcinfo.rca); - mmcinfo.rca = mmcinfo.rca << 16; - DEBUG(2, "mmc_init_card_state: Get RCA from SD: 0x%04x Status: %x\n", mmcinfo.rca, r1.status); - } else { - retval = mmc_unpack_r1(request,&r1,mmcinfo.state); - mmcinfo.rca = ID_TO_RCA(mmcinfo.id) << 16; - } - if (retval) { - DEBUG(0, "mmc_init_card_state: unable to SET_RELATIVE_ADDR error=%d (%s)\n", - retval, mmc_result_to_string(retval)); - return MMC_INIT_FAILED; - } - - mmcinfo.state = CARD_STATE_STBY; - mmc_simple_cmd(request, MMC_SEND_CSD, mmcinfo.rca, RESPONSE_R2_CSD); - - break; - - case MMC_SEND_CSD: - retval = mmc_unpack_csd(request, &mmcinfo.csd); - mmc_csd_t *csd = (mmc_csd_t *)retval; - memcpy(&mmc_csd, csd, sizeof(csd)); - mmc_ready = 1; - - printf("MMC card is ready\n"); - /* FIXME add verbose printout for csd */ - - /*FIXME:ignore CRC error for CMD2/CMD9/CMD10 */ - if (retval && (retval != MMC_ERROR_CRC)) { - DEBUG(0, "mmc_init_card_state: unable to SEND_CSD error=%d (%s)\n", - retval, mmc_result_to_string(retval)); - return MMC_INIT_FAILED; - } - if (mmcinfo.csd.dsr_imp) { - DEBUG(0, "mmc_init_card_state: driver doesn't support setting DSR\n"); - } - mmc_configure_card(); - return MMC_INIT_PASSED; - - default: - DEBUG(0, "mmc_init_card_state: error! Illegal last cmd %d\n", request->cmd); - return MMC_INIT_FAILED; - } - - return MMC_INIT_DOING; -} - -int mmc_init_card(void) -{ - struct mmc_request request; - int retval; - - mmc_simple_cmd(&request, MMC_CIM_RESET, 0, RESPONSE_NONE); /* reset card */ - mmc_simple_cmd(&request, MMC_GO_IDLE_STATE, 0, RESPONSE_NONE); - mmcinfo.sd = 1; /* assuming a SD card */ - - while ((retval = mmc_init_card_state(&request)) == MMC_INIT_DOING) - ; - - if (retval == MMC_INIT_PASSED) - return MMC_NO_ERROR; - else - return MMC_NO_RESPONSE; -} - -int mmc_legacy_init(int verbose) -{ - if (!__msc_card_detected()) - return 1; - - printf("MMC card found\n"); - - /* Step-1: init GPIO */ - __gpio_as_msc(); - - __msc_init_io(); - - /* Step-2: turn on power of card */ -#if !defined(CONFIG_SAKC) - __msc_enable_power(); -#endif - - /* Step-3: Reset MSC Controller. */ - __msc_reset(); - - /* Step-3: mask all IRQs. */ - MMC_IRQ_MASK(); - - /* Step-4: stop MMC/SD clock */ - jz_mmc_stop_clock(); - mmc_init_card(); - mmc_select_card(); - - mmc_dev.block_read = mmc_bread; - fat_register_device(&mmc_dev,1); /* partitions start counting with 1 */ - - return 0; -} - -int mmc_ident(block_dev_desc_t *dev) -{ - return 0; -} - -int mmc2info(ulong addr) -{ - /* FIXME hard codes to 32 MB device */ - if (addr >= CFG_MMC_BASE && addr < CFG_MMC_BASE + 0x02000000) { - return 1; - } - return 0; -} -/* - * Debugging functions - */ - -static char * mmc_result_strings[] = { - "NO_RESPONSE", - "NO_ERROR", - "ERROR_OUT_OF_RANGE", - "ERROR_ADDRESS", - "ERROR_BLOCK_LEN", - "ERROR_ERASE_SEQ", - "ERROR_ERASE_PARAM", - "ERROR_WP_VIOLATION", - "ERROR_CARD_IS_LOCKED", - "ERROR_LOCK_UNLOCK_FAILED", - "ERROR_COM_CRC", - "ERROR_ILLEGAL_COMMAND", - "ERROR_CARD_ECC_FAILED", - "ERROR_CC", - "ERROR_GENERAL", - "ERROR_UNDERRUN", - "ERROR_OVERRUN", - "ERROR_CID_CSD_OVERWRITE", - "ERROR_STATE_MISMATCH", - "ERROR_HEADER_MISMATCH", - "ERROR_TIMEOUT", - "ERROR_CRC", - "ERROR_DRIVER_FAILURE", -}; - -char * mmc_result_to_string(int i) -{ - return mmc_result_strings[i+1]; -} - -static char * card_state_strings[] = { - "empty", - "idle", - "ready", - "ident", - "stby", - "tran", - "data", - "rcv", - "prg", - "dis", -}; - -static inline char * card_state_to_string(int i) -{ - return card_state_strings[i+1]; -} - -/* - * Utility functions - */ - -#define PARSE_U32(_buf,_index) \ - (((u32)_buf[_index]) << 24) | (((u32)_buf[_index+1]) << 16) | \ - (((u32)_buf[_index+2]) << 8) | ((u32)_buf[_index+3]); - -#define PARSE_U16(_buf,_index) \ - (((u16)_buf[_index]) << 8) | ((u16)_buf[_index+1]); - -int mmc_unpack_csd(struct mmc_request *request, struct mmc_csd *csd) -{ - u8 *buf = request->response; - int num = 0; - - if (request->result) - return request->result; - - csd->csd_structure = (buf[1] & 0xc0) >> 6; - if (csd->csd_structure) - sd2_0 = 1; - else - sd2_0 = 0; - - switch (csd->csd_structure) { - case 0 : - csd->taac = buf[2]; - csd->nsac = buf[3]; - csd->tran_speed = buf[4]; - csd->ccc = (((u16)buf[5]) << 4) | ((buf[6] & 0xf0) >> 4); - csd->read_bl_len = buf[6] & 0x0f; - /* for support 2GB card*/ - if (csd->read_bl_len >= 10) - { - num = csd->read_bl_len - 9; - csd->read_bl_len = 9; - } - - csd->read_bl_partial = (buf[7] & 0x80) ? 1 : 0; - csd->write_blk_misalign = (buf[7] & 0x40) ? 1 : 0; - csd->read_blk_misalign = (buf[7] & 0x20) ? 1 : 0; - csd->dsr_imp = (buf[7] & 0x10) ? 1 : 0; - csd->c_size = ((((u16)buf[7]) & 0x03) << 10) | (((u16)buf[8]) << 2) | (((u16)buf[9]) & 0xc0) >> 6; - - if (num) - csd->c_size = csd->c_size << num; - - - csd->vdd_r_curr_min = (buf[9] & 0x38) >> 3; - csd->vdd_r_curr_max = buf[9] & 0x07; - csd->vdd_w_curr_min = (buf[10] & 0xe0) >> 5; - csd->vdd_w_curr_max = (buf[10] & 0x1c) >> 2; - csd->c_size_mult = ((buf[10] & 0x03) << 1) | ((buf[11] & 0x80) >> 7); - switch (csd->csd_structure) { - case CSD_STRUCT_VER_1_0: - case CSD_STRUCT_VER_1_1: - csd->erase.v22.sector_size = (buf[11] & 0x7c) >> 2; - csd->erase.v22.erase_grp_size = ((buf[11] & 0x03) << 3) | ((buf[12] & 0xe0) >> 5); - - break; - case CSD_STRUCT_VER_1_2: - default: - csd->erase.v31.erase_grp_size = (buf[11] & 0x7c) >> 2; - csd->erase.v31.erase_grp_mult = ((buf[11] & 0x03) << 3) | ((buf[12] & 0xe0) >> 5); - break; - } - csd->wp_grp_size = buf[12] & 0x1f; - csd->wp_grp_enable = (buf[13] & 0x80) ? 1 : 0; - csd->default_ecc = (buf[13] & 0x60) >> 5; - csd->r2w_factor = (buf[13] & 0x1c) >> 2; - csd->write_bl_len = ((buf[13] & 0x03) << 2) | ((buf[14] & 0xc0) >> 6); - if (csd->write_bl_len >= 10) - csd->write_bl_len = 9; - - csd->write_bl_partial = (buf[14] & 0x20) ? 1 : 0; - csd->file_format_grp = (buf[15] & 0x80) ? 1 : 0; - csd->copy = (buf[15] & 0x40) ? 1 : 0; - csd->perm_write_protect = (buf[15] & 0x20) ? 1 : 0; - csd->tmp_write_protect = (buf[15] & 0x10) ? 1 : 0; - csd->file_format = (buf[15] & 0x0c) >> 2; - csd->ecc = buf[15] & 0x03; - - DEBUG(2," csd_structure=%d spec_vers=%d taac=%02x nsac=%02x tran_speed=%02x\n" - " ccc=%04x read_bl_len=%d read_bl_partial=%d write_blk_misalign=%d\n" - " read_blk_misalign=%d dsr_imp=%d c_size=%d vdd_r_curr_min=%d\n" - " vdd_r_curr_max=%d vdd_w_curr_min=%d vdd_w_curr_max=%d c_size_mult=%d\n" - " wp_grp_size=%d wp_grp_enable=%d default_ecc=%d r2w_factor=%d\n" - " write_bl_len=%d write_bl_partial=%d file_format_grp=%d copy=%d\n" - " perm_write_protect=%d tmp_write_protect=%d file_format=%d ecc=%d\n", - csd->csd_structure, csd->spec_vers, - csd->taac, csd->nsac, csd->tran_speed, - csd->ccc, csd->read_bl_len, - csd->read_bl_partial, csd->write_blk_misalign, - csd->read_blk_misalign, csd->dsr_imp, - csd->c_size, csd->vdd_r_curr_min, - csd->vdd_r_curr_max, csd->vdd_w_curr_min, - csd->vdd_w_curr_max, csd->c_size_mult, - csd->wp_grp_size, csd->wp_grp_enable, - csd->default_ecc, csd->r2w_factor, - csd->write_bl_len, csd->write_bl_partial, - csd->file_format_grp, csd->copy, - csd->perm_write_protect, csd->tmp_write_protect, - csd->file_format, csd->ecc); - switch (csd->csd_structure) { - case CSD_STRUCT_VER_1_0: - case CSD_STRUCT_VER_1_1: - DEBUG(2," V22 sector_size=%d erase_grp_size=%d\n", - csd->erase.v22.sector_size, - csd->erase.v22.erase_grp_size); - break; - case CSD_STRUCT_VER_1_2: - default: - DEBUG(2," V31 erase_grp_size=%d erase_grp_mult=%d\n", - csd->erase.v31.erase_grp_size, - csd->erase.v31.erase_grp_mult); - break; - - } - break; - - case 1 : - csd->taac = 0; - csd->nsac = 0; - csd->tran_speed = buf[4]; - csd->ccc = (((u16)buf[5]) << 4) | ((buf[6] & 0xf0) >> 4); - - csd->read_bl_len = 9; - csd->read_bl_partial = 0; - csd->write_blk_misalign = 0; - csd->read_blk_misalign = 0; - csd->dsr_imp = (buf[7] & 0x10) ? 1 : 0; - csd->c_size = ((((u16)buf[8]) & 0x3f) << 16) | (((u16)buf[9]) << 8) | ((u16)buf[10]) ; - switch (csd->csd_structure) { - case CSD_STRUCT_VER_1_0: - case CSD_STRUCT_VER_1_1: - csd->erase.v22.sector_size = 0x7f; - csd->erase.v22.erase_grp_size = 0; - break; - case CSD_STRUCT_VER_1_2: - default: - csd->erase.v31.erase_grp_size = 0x7f; - csd->erase.v31.erase_grp_mult = 0; - break; - } - csd->wp_grp_size = 0; - csd->wp_grp_enable = 0; - csd->default_ecc = (buf[13] & 0x60) >> 5; - csd->r2w_factor = 4;/* Unused */ - csd->write_bl_len = 9; - - csd->write_bl_partial = 0; - csd->file_format_grp = 0; - csd->copy = (buf[15] & 0x40) ? 1 : 0; - csd->perm_write_protect = (buf[15] & 0x20) ? 1 : 0; - csd->tmp_write_protect = (buf[15] & 0x10) ? 1 : 0; - csd->file_format = 0; - csd->ecc = buf[15] & 0x03; - - DEBUG(2," csd_structure=%d spec_vers=%d taac=%02x nsac=%02x tran_speed=%02x\n" - " ccc=%04x read_bl_len=%d read_bl_partial=%d write_blk_misalign=%d\n" - " read_blk_misalign=%d dsr_imp=%d c_size=%d vdd_r_curr_min=%d\n" - " vdd_r_curr_max=%d vdd_w_curr_min=%d vdd_w_curr_max=%d c_size_mult=%d\n" - " wp_grp_size=%d wp_grp_enable=%d default_ecc=%d r2w_factor=%d\n" - " write_bl_len=%d write_bl_partial=%d file_format_grp=%d copy=%d\n" - " perm_write_protect=%d tmp_write_protect=%d file_format=%d ecc=%d\n", - csd->csd_structure, csd->spec_vers, - csd->taac, csd->nsac, csd->tran_speed, - csd->ccc, csd->read_bl_len, - csd->read_bl_partial, csd->write_blk_misalign, - csd->read_blk_misalign, csd->dsr_imp, - csd->c_size, csd->vdd_r_curr_min, - csd->vdd_r_curr_max, csd->vdd_w_curr_min, - csd->vdd_w_curr_max, csd->c_size_mult, - csd->wp_grp_size, csd->wp_grp_enable, - csd->default_ecc, csd->r2w_factor, - csd->write_bl_len, csd->write_bl_partial, - csd->file_format_grp, csd->copy, - csd->perm_write_protect, csd->tmp_write_protect, - csd->file_format, csd->ecc); - switch (csd->csd_structure) { - case CSD_STRUCT_VER_1_0: - case CSD_STRUCT_VER_1_1: - DEBUG(2," V22 sector_size=%d erase_grp_size=%d\n", - csd->erase.v22.sector_size, - csd->erase.v22.erase_grp_size); - break; - case CSD_STRUCT_VER_1_2: - default: - DEBUG(2," V31 erase_grp_size=%d erase_grp_mult=%d\n", - csd->erase.v31.erase_grp_size, - csd->erase.v31.erase_grp_mult); - break; - } - } - - if (buf[0] != 0x3f) return MMC_ERROR_HEADER_MISMATCH; - - return 0; -} - -int mmc_unpack_r1(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state) -{ - u8 *buf = request->response; - - if (request->result) return request->result; - - r1->cmd = buf[0]; - r1->status = PARSE_U32(buf,1); - - DEBUG(2, "mmc_unpack_r1: cmd=%d status=%08x\n", r1->cmd, r1->status); - - if (R1_STATUS(r1->status)) { - if (r1->status & R1_OUT_OF_RANGE) return MMC_ERROR_OUT_OF_RANGE; - if (r1->status & R1_ADDRESS_ERROR) return MMC_ERROR_ADDRESS; - if (r1->status & R1_BLOCK_LEN_ERROR) return MMC_ERROR_BLOCK_LEN; - if (r1->status & R1_ERASE_SEQ_ERROR) return MMC_ERROR_ERASE_SEQ; - if (r1->status & R1_ERASE_PARAM) return MMC_ERROR_ERASE_PARAM; - if (r1->status & R1_WP_VIOLATION) return MMC_ERROR_WP_VIOLATION; - /*if (r1->status & R1_CARD_IS_LOCKED) return MMC_ERROR_CARD_IS_LOCKED; */ - if (r1->status & R1_LOCK_UNLOCK_FAILED) return MMC_ERROR_LOCK_UNLOCK_FAILED; - if (r1->status & R1_COM_CRC_ERROR) return MMC_ERROR_COM_CRC; - if (r1->status & R1_ILLEGAL_COMMAND) return MMC_ERROR_ILLEGAL_COMMAND; - if (r1->status & R1_CARD_ECC_FAILED) return MMC_ERROR_CARD_ECC_FAILED; - if (r1->status & R1_CC_ERROR) return MMC_ERROR_CC; - if (r1->status & R1_ERROR) return MMC_ERROR_GENERAL; - if (r1->status & R1_UNDERRUN) return MMC_ERROR_UNDERRUN; - if (r1->status & R1_OVERRUN) return MMC_ERROR_OVERRUN; - if (r1->status & R1_CID_CSD_OVERWRITE) return MMC_ERROR_CID_CSD_OVERWRITE; - } - - if (buf[0] != request->cmd) return MMC_ERROR_HEADER_MISMATCH; - - /* This should be last - it's the least dangerous error */ - - return 0; -} - -int mmc_unpack_scr(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, u32 *scr) -{ - u8 *buf = request->response; - if (request->result) return request->result; - - *scr = PARSE_U32(buf, 5); /* Save SCR returned by the SD Card */ - return mmc_unpack_r1(request, r1, state); - -} - -int mmc_unpack_r6(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, int *rca) -{ - u8 *buf = request->response; - - if (request->result) return request->result; - - *rca = PARSE_U16(buf,1); /* Save RCA returned by the SD Card */ - - *(buf+1) = 0; - *(buf+2) = 0; - - return mmc_unpack_r1(request, r1, state); -} - -int mmc_unpack_cid(struct mmc_request *request, struct mmc_cid *cid) -{ - u8 *buf = request->response; - int i; - - if (request->result) return request->result; - - cid->mid = buf[1]; - cid->oid = PARSE_U16(buf,2); - for (i = 0 ; i < 6 ; i++) - cid->pnm[i] = buf[4+i]; - cid->pnm[6] = 0; - cid->prv = buf[10]; - cid->psn = PARSE_U32(buf,11); - cid->mdt = buf[15]; - - DEBUG(2,"mmc_unpack_cid: mid=%d oid=%d pnm=%s prv=%d.%d psn=%08x mdt=%d/%d\n", - cid->mid, cid->oid, cid->pnm, - (cid->prv>>4), (cid->prv&0xf), - cid->psn, (cid->mdt>>4), (cid->mdt&0xf)+1997); - - if (buf[0] != 0x3f) return MMC_ERROR_HEADER_MISMATCH; - return 0; -} - -int mmc_unpack_r3(struct mmc_request *request, struct mmc_response_r3 *r3) -{ - u8 *buf = request->response; - - if (request->result) return request->result; - - r3->ocr = PARSE_U32(buf,1); - DEBUG(2,"mmc_unpack_r3: ocr=%08x\n", r3->ocr); - - if (buf[0] != 0x3f) return MMC_ERROR_HEADER_MISMATCH; - return 0; -} - -#define KBPS 1 -#define MBPS 1000 - -static u32 ts_exp[] = { 100*KBPS, 1*MBPS, 10*MBPS, 100*MBPS, 0, 0, 0, 0 }; -static u32 ts_mul[] = { 0, 1000, 1200, 1300, 1500, 2000, 2500, 3000, - 3500, 4000, 4500, 5000, 5500, 6000, 7000, 8000 }; - -u32 mmc_tran_speed(u8 ts) -{ - u32 rate = ts_exp[(ts & 0x7)] * ts_mul[(ts & 0x78) >> 3]; - - if (rate <= 0) { - DEBUG(0, "mmc_tran_speed: error - unrecognized speed 0x%02x\n", ts); - return 1; - } - - return rate; -} - -void mmc_send_cmd(struct mmc_request *request, int cmd, u32 arg, - u16 nob, u16 block_len, enum mmc_rsp_t rtype, u8 *buffer) -{ - request->cmd = cmd; - request->arg = arg; - request->rtype = rtype; - request->nob = nob; - request->block_len = block_len; - request->buffer = buffer; - request->cnt = nob * block_len; - - jz_mmc_exec_cmd(request); -} - -#endif /* CONFIG_MMC */ -#endif /* CONFIG_JZ4740 */ |