+++ /dev/null
-/*
- * (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
- */
-#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)
-
-#define __msc_card_detected() \
-({ \
- int detected = 1; \
- __gpio_as_input(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) {
- DEBUG(2, "Use 4-bit bus width\n");
- use_4bit = 1;
- }
- else {
- DEBUG(2, "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;
- }
- mmc_simple_cmd(&request, SET_BUS_WIDTH, 2, RESPONSE_R1);
- 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 */
- __msc_enable_power();
-
- /* 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 */
projects / openwrt / svn-archive / archive.git / commitdiff