#include <part.h>
#include <malloc.h>
#include <linux/list.h>
-#include <mmc.h>
#include <div64.h>
+/* Set block count limit because of 16 bit register limit on some hardware*/
+#ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
+#define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
+#endif
+
static struct list_head mmc_devices;
static int cur_dev_num = -1;
int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
{
+#ifdef CONFIG_MMC_TRACE
+ int ret;
+ int i;
+ u8 *ptr;
+
+ printf("CMD_SEND:%d\n", cmd->cmdidx);
+ printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
+ printf("\t\tFLAG\t\t\t %d\n", cmd->flags);
+ ret = mmc->send_cmd(mmc, cmd, data);
+ switch (cmd->resp_type) {
+ case MMC_RSP_NONE:
+ printf("\t\tMMC_RSP_NONE\n");
+ break;
+ case MMC_RSP_R1:
+ printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ case MMC_RSP_R1b:
+ printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ case MMC_RSP_R2:
+ printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
+ cmd->response[0]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[1]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[2]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[3]);
+ printf("\n");
+ printf("\t\t\t\t\tDUMPING DATA\n");
+ for (i = 0; i < 4; i++) {
+ int j;
+ printf("\t\t\t\t\t%03d - ", i*4);
+ ptr = &cmd->response[i];
+ ptr += 3;
+ for (j = 0; j < 4; j++)
+ printf("%02X ", *ptr--);
+ printf("\n");
+ }
+ break;
+ case MMC_RSP_R3:
+ printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ default:
+ printf("\t\tERROR MMC rsp not supported\n");
+ break;
+ }
+ return ret;
+#else
return mmc->send_cmd(mmc, cmd, data);
+#endif
+}
+
+int mmc_send_status(struct mmc *mmc, int timeout)
+{
+ struct mmc_cmd cmd;
+ int err;
+#ifdef CONFIG_MMC_TRACE
+ int status;
+#endif
+
+ cmd.cmdidx = MMC_CMD_SEND_STATUS;
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.cmdarg = 0;
+ cmd.flags = 0;
+
+ do {
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ return err;
+ else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA)
+ break;
+
+ udelay(1000);
+
+ if (cmd.response[0] & MMC_STATUS_MASK) {
+ printf("Status Error: 0x%08X\n", cmd.response[0]);
+ return COMM_ERR;
+ }
+ } while (timeout--);
+
+#ifdef CONFIG_MMC_TRACE
+ status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
+ printf("CURR STATE:%d\n", status);
+#endif
+ if (!timeout) {
+ printf("Timeout waiting card ready\n");
+ return TIMEOUT;
+ }
+
+ return 0;
}
int mmc_set_blocklen(struct mmc *mmc, int len)
}
static ulong
-mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
+mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src)
{
struct mmc_cmd cmd;
struct mmc_data data;
- int err;
- int stoperr = 0;
- struct mmc *mmc = find_mmc_device(dev_num);
- int blklen;
-
- if (!mmc)
- return -1;
-
- blklen = mmc->write_bl_len;
+ int timeout = 1000;
if ((start + blkcnt) > mmc->block_dev.lba) {
- printf("MMC: block number 0x%x exceeds max(0x%x)",
+ printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
start + blkcnt, mmc->block_dev.lba);
return 0;
}
- err = mmc_set_blocklen(mmc, mmc->write_bl_len);
-
- if (err) {
- printf("set write bl len failed\n\r");
- return err;
- }
if (blkcnt > 1)
cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
if (mmc->high_capacity)
cmd.cmdarg = start;
else
- cmd.cmdarg = start * blklen;
+ cmd.cmdarg = start * mmc->write_bl_len;
cmd.resp_type = MMC_RSP_R1;
cmd.flags = 0;
data.src = src;
data.blocks = blkcnt;
- data.blocksize = blklen;
+ data.blocksize = mmc->write_bl_len;
data.flags = MMC_DATA_WRITE;
- err = mmc_send_cmd(mmc, &cmd, &data);
-
- if (err) {
- printf("mmc write failed\n\r");
- return err;
+ if (mmc_send_cmd(mmc, &cmd, &data)) {
+ printf("mmc write failed\n");
+ return 0;
}
- if (blkcnt > 1) {
+ /* SPI multiblock writes terminate using a special
+ * token, not a STOP_TRANSMISSION request.
+ */
+ if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
cmd.cmdarg = 0;
cmd.resp_type = MMC_RSP_R1b;
cmd.flags = 0;
- stoperr = mmc_send_cmd(mmc, &cmd, NULL);
+ if (mmc_send_cmd(mmc, &cmd, NULL)) {
+ printf("mmc fail to send stop cmd\n");
+ return 0;
+ }
+
+ /* Waiting for the ready status */
+ mmc_send_status(mmc, timeout);
}
return blkcnt;
}
-int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum)
+static ulong
+mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
+{
+ lbaint_t cur, blocks_todo = blkcnt;
+
+ struct mmc *mmc = find_mmc_device(dev_num);
+ if (!mmc)
+ return 0;
+
+ if (mmc_set_blocklen(mmc, mmc->write_bl_len))
+ return 0;
+
+ do {
+ cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
+ if(mmc_write_blocks(mmc, start, cur, src) != cur)
+ return 0;
+ blocks_todo -= cur;
+ start += cur;
+ src += cur * mmc->write_bl_len;
+ } while (blocks_todo > 0);
+
+ return blkcnt;
+}
+
+int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt)
{
struct mmc_cmd cmd;
struct mmc_data data;
+ int timeout = 1000;
- cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
+ if (blkcnt > 1)
+ cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
+ else
+ cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
if (mmc->high_capacity)
- cmd.cmdarg = blocknum;
+ cmd.cmdarg = start;
else
- cmd.cmdarg = blocknum * mmc->read_bl_len;
+ cmd.cmdarg = start * mmc->read_bl_len;
cmd.resp_type = MMC_RSP_R1;
cmd.flags = 0;
data.dest = dst;
- data.blocks = 1;
+ data.blocks = blkcnt;
data.blocksize = mmc->read_bl_len;
data.flags = MMC_DATA_READ;
- return mmc_send_cmd(mmc, &cmd, &data);
-}
-
-int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
-{
- char *buffer;
- int i;
- int blklen = mmc->read_bl_len;
- int startblock = lldiv(src, mmc->read_bl_len);
- int endblock = lldiv(src + size - 1, mmc->read_bl_len);
- int err = 0;
-
- /* Make a buffer big enough to hold all the blocks we might read */
- buffer = malloc(blklen);
-
- if (!buffer) {
- printf("Could not allocate buffer for MMC read!\n");
- return -1;
- }
-
- /* We always do full block reads from the card */
- err = mmc_set_blocklen(mmc, mmc->read_bl_len);
-
- if (err)
- goto free_buffer;
-
- for (i = startblock; i <= endblock; i++) {
- int segment_size;
- int offset;
-
- err = mmc_read_block(mmc, buffer, i);
-
- if (err)
- goto free_buffer;
-
- /*
- * The first block may not be aligned, so we
- * copy from the desired point in the block
- */
- offset = (src & (blklen - 1));
- segment_size = MIN(blklen - offset, size);
+ if (mmc_send_cmd(mmc, &cmd, &data))
+ return 0;
- memcpy(dst, buffer + offset, segment_size);
+ if (blkcnt > 1) {
+ cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
+ cmd.cmdarg = 0;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.flags = 0;
+ if (mmc_send_cmd(mmc, &cmd, NULL)) {
+ printf("mmc fail to send stop cmd\n");
+ return 0;
+ }
- dst += segment_size;
- src += segment_size;
- size -= segment_size;
+ /* Waiting for the ready status */
+ mmc_send_status(mmc, timeout);
}
-free_buffer:
- free(buffer);
-
- return err;
+ return blkcnt;
}
static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst)
{
- int err;
- int i;
- struct mmc *mmc = find_mmc_device(dev_num);
+ lbaint_t cur, blocks_todo = blkcnt;
+
+ if (blkcnt == 0)
+ return 0;
+ struct mmc *mmc = find_mmc_device(dev_num);
if (!mmc)
return 0;
if ((start + blkcnt) > mmc->block_dev.lba) {
- printf("MMC: block number 0x%x exceeds max(0x%x)",
+ printf("MMC: block number 0x%lx exceeds max(0x%lx)\n",
start + blkcnt, mmc->block_dev.lba);
return 0;
}
- /* We always do full block reads from the card */
- err = mmc_set_blocklen(mmc, mmc->read_bl_len);
- if (err) {
+ if (mmc_set_blocklen(mmc, mmc->read_bl_len))
return 0;
- }
- for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) {
- err = mmc_read_block(mmc, dst, i);
-
- if (err) {
- printf("block read failed: %d\n", err);
- return i - start;
- }
- }
+ do {
+ cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo;
+ if(mmc_read_blocks(mmc, dst, start, cur) != cur)
+ return 0;
+ blocks_todo -= cur;
+ start += cur;
+ dst += cur * mmc->read_bl_len;
+ } while (blocks_todo > 0);
return blkcnt;
}
* how to manage low voltages SD card is not yet
* specified.
*/
- cmd.cmdarg = mmc->voltages & 0xff8000;
+ cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
+ (mmc->voltages & 0xff8000);
if (mmc->version == SD_VERSION_2)
cmd.cmdarg |= OCR_HCS;
if (mmc->version != SD_VERSION_2)
mmc->version = SD_VERSION_1_0;
+ if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
+ cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
+ cmd.resp_type = MMC_RSP_R3;
+ cmd.cmdarg = 0;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+ }
+
mmc->ocr = cmd.response[0];
mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
int mmc_send_op_cond(struct mmc *mmc)
{
- int timeout = 1000;
+ int timeout = 10000;
struct mmc_cmd cmd;
int err;
/* Some cards seem to need this */
mmc_go_idle(mmc);
+ /* Asking to the card its capabilities */
+ cmd.cmdidx = MMC_CMD_SEND_OP_COND;
+ cmd.resp_type = MMC_RSP_R3;
+ cmd.cmdarg = 0;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+
+ udelay(1000);
+
do {
cmd.cmdidx = MMC_CMD_SEND_OP_COND;
cmd.resp_type = MMC_RSP_R3;
- cmd.cmdarg = OCR_HCS | mmc->voltages;
+ cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 :
+ (mmc->voltages &
+ (cmd.response[0] & OCR_VOLTAGE_MASK)) |
+ (cmd.response[0] & OCR_ACCESS_MODE));
cmd.flags = 0;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (timeout <= 0)
return UNUSABLE_ERR;
+ if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
+ cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
+ cmd.resp_type = MMC_RSP_R3;
+ cmd.cmdarg = 0;
+ cmd.flags = 0;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+ }
+
mmc->version = MMC_VERSION_UNKNOWN;
mmc->ocr = cmd.response[0];
int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
{
struct mmc_cmd cmd;
+ int timeout = 1000;
+ int ret;
cmd.cmdidx = MMC_CMD_SWITCH;
cmd.resp_type = MMC_RSP_R1b;
cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
- (index << 16) |
- (value << 8);
+ (index << 16) |
+ (value << 8);
cmd.flags = 0;
- return mmc_send_cmd(mmc, &cmd, NULL);
+ ret = mmc_send_cmd(mmc, &cmd, NULL);
+
+ /* Waiting for the ready status */
+ mmc_send_status(mmc, timeout);
+
+ return ret;
+
}
int mmc_change_freq(struct mmc *mmc)
mmc->card_caps = 0;
+ if (mmc_host_is_spi(mmc))
+ return 0;
+
/* Only version 4 supports high-speed */
if (mmc->version < MMC_VERSION_4)
return 0;
if (err)
return err;
- if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215])
- mmc->high_capacity = 1;
-
cardtype = ext_csd[196] & 0xf;
err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
mmc->card_caps = 0;
+ if (mmc_host_is_spi(mmc))
+ return 0;
+
/* Read the SCR to find out if this card supports higher speeds */
cmd.cmdidx = MMC_CMD_APP_CMD;
cmd.resp_type = MMC_RSP_R1;
break;
}
+ if (mmc->scr[0] & SD_DATA_4BIT)
+ mmc->card_caps |= MMC_MODE_4BIT;
+
/* Version 1.0 doesn't support switching */
if (mmc->version == SD_VERSION_1_0)
return 0;
break;
}
- if (mmc->scr[0] & SD_DATA_4BIT)
- mmc->card_caps |= MMC_MODE_4BIT;
-
/* If high-speed isn't supported, we return */
if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
return 0;
/* frequency bases */
/* divided by 10 to be nice to platforms without floating point */
-int fbase[] = {
+static const int fbase[] = {
10000,
100000,
1000000,
/* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
* to platforms without floating point.
*/
-int multipliers[] = {
+static const int multipliers[] = {
0, /* reserved */
10,
12,
uint mult, freq;
u64 cmult, csize;
struct mmc_cmd cmd;
+ char ext_csd[512];
+ int timeout = 1000;
+
+#ifdef CONFIG_MMC_SPI_CRC_ON
+ if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
+ cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.cmdarg = 1;
+ cmd.flags = 0;
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+ if (err)
+ return err;
+ }
+#endif
/* Put the Card in Identify Mode */
- cmd.cmdidx = MMC_CMD_ALL_SEND_CID;
+ cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
+ MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
cmd.resp_type = MMC_RSP_R2;
cmd.cmdarg = 0;
cmd.flags = 0;
* For SD cards, get the Relatvie Address.
* This also puts the cards into Standby State
*/
- cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
- cmd.cmdarg = mmc->rca << 16;
- cmd.resp_type = MMC_RSP_R6;
- cmd.flags = 0;
+ if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
+ cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
+ cmd.cmdarg = mmc->rca << 16;
+ cmd.resp_type = MMC_RSP_R6;
+ cmd.flags = 0;
- err = mmc_send_cmd(mmc, &cmd, NULL);
+ err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err)
- return err;
+ if (err)
+ return err;
- if (IS_SD(mmc))
- mmc->rca = (cmd.response[0] >> 16) & 0xffff;
+ if (IS_SD(mmc))
+ mmc->rca = (cmd.response[0] >> 16) & 0xffff;
+ }
/* Get the Card-Specific Data */
cmd.cmdidx = MMC_CMD_SEND_CSD;
err = mmc_send_cmd(mmc, &cmd, NULL);
+ /* Waiting for the ready status */
+ mmc_send_status(mmc, timeout);
+
if (err)
return err;
mmc->write_bl_len = 512;
/* Select the card, and put it into Transfer Mode */
- cmd.cmdidx = MMC_CMD_SELECT_CARD;
- cmd.resp_type = MMC_RSP_R1b;
- cmd.cmdarg = mmc->rca << 16;
- cmd.flags = 0;
- err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
+ cmd.cmdidx = MMC_CMD_SELECT_CARD;
+ cmd.resp_type = MMC_RSP_R1b;
+ cmd.cmdarg = mmc->rca << 16;
+ cmd.flags = 0;
+ err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err)
- return err;
+ if (err)
+ return err;
+ }
+
+ if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
+ /* check ext_csd version and capacity */
+ err = mmc_send_ext_csd(mmc, ext_csd);
+ if (!err & (ext_csd[192] >= 2)) {
+ mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 |
+ ext_csd[214] << 16 | ext_csd[215] << 24;
+ mmc->capacity *= 512;
+ }
+ }
if (IS_SD(mmc))
err = sd_change_freq(mmc);
mmc->block_dev.removable = 1;
mmc->block_dev.block_read = mmc_bread;
mmc->block_dev.block_write = mmc_bwrite;
+ if (!mmc->b_max)
+ mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
INIT_LIST_HEAD (&mmc->link);
projects / u-boot / blobdiff