static struct list_head mmc_devices;
static int cur_dev_num = -1;
+static int mmc_dev_count;
__weak int board_mmc_getwp(struct mmc *mmc)
{
if (!mmc_host_is_spi(mmc))
cmd.cmdarg = mmc->rca << 16;
- do {
+ while (1) {
err = mmc_send_cmd(mmc, &cmd, NULL);
if (!err) {
if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
} else if (--retries < 0)
return err;
- udelay(1000);
+ if (timeout-- <= 0)
+ break;
- } while (timeout--);
+ udelay(1000);
+ }
#ifdef CONFIG_MMC_TRACE
status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
return 0;
}
- if (mmc_set_blocklen(mmc, mmc->read_bl_len))
+ if (mmc_set_blocklen(mmc, mmc->read_bl_len)) {
+ debug("%s: Failed to set blocklen\n", __func__);
return 0;
+ }
do {
cur = (blocks_todo > mmc->cfg->b_max) ?
mmc->cfg->b_max : blocks_todo;
- if(mmc_read_blocks(mmc, dst, start, cur) != cur)
+ if (mmc_read_blocks(mmc, dst, start, cur) != cur) {
+ debug("%s: Failed to read blocks\n", __func__);
return 0;
+ }
blocks_todo -= cur;
start += cur;
dst += cur * mmc->read_bl_len;
int err;
struct mmc_cmd cmd;
- do {
+ while (1) {
cmd.cmdidx = MMC_CMD_APP_CMD;
cmd.resp_type = MMC_RSP_R1;
cmd.cmdarg = 0;
if (err)
return err;
- udelay(1000);
- } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--);
+ if (cmd.response[0] & OCR_BUSY)
+ break;
- if (timeout <= 0)
- return UNUSABLE_ERR;
+ if (timeout-- <= 0)
+ return UNUSABLE_ERR;
+
+ udelay(1000);
+ }
if (mmc->version != SD_VERSION_2)
mmc->version = SD_VERSION_1_0;
return 0;
}
-/* We pass in the cmd since otherwise the init seems to fail */
-static int mmc_send_op_cond_iter(struct mmc *mmc, struct mmc_cmd *cmd,
- int use_arg)
+static int mmc_send_op_cond_iter(struct mmc *mmc, int use_arg)
{
+ struct mmc_cmd cmd;
int err;
- cmd->cmdidx = MMC_CMD_SEND_OP_COND;
- cmd->resp_type = MMC_RSP_R3;
- cmd->cmdarg = 0;
- if (use_arg && !mmc_host_is_spi(mmc)) {
- cmd->cmdarg =
+ cmd.cmdidx = MMC_CMD_SEND_OP_COND;
+ cmd.resp_type = MMC_RSP_R3;
+ cmd.cmdarg = 0;
+ if (use_arg && !mmc_host_is_spi(mmc))
+ cmd.cmdarg = OCR_HCS |
(mmc->cfg->voltages &
- (mmc->op_cond_response & OCR_VOLTAGE_MASK)) |
- (mmc->op_cond_response & OCR_ACCESS_MODE);
+ (mmc->ocr & OCR_VOLTAGE_MASK)) |
+ (mmc->ocr & OCR_ACCESS_MODE);
- if (mmc->cfg->host_caps & MMC_MODE_HC)
- cmd->cmdarg |= OCR_HCS;
- }
- err = mmc_send_cmd(mmc, cmd, NULL);
+ err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
return err;
- mmc->op_cond_response = cmd->response[0];
+ mmc->ocr = cmd.response[0];
return 0;
}
static int mmc_send_op_cond(struct mmc *mmc)
{
- struct mmc_cmd cmd;
int err, i;
/* Some cards seem to need this */
mmc_go_idle(mmc);
- /* Asking to the card its capabilities */
- mmc->op_cond_pending = 1;
+ /* Asking to the card its capabilities */
for (i = 0; i < 2; i++) {
- err = mmc_send_op_cond_iter(mmc, &cmd, i != 0);
+ err = mmc_send_op_cond_iter(mmc, i != 0);
if (err)
return err;
/* exit if not busy (flag seems to be inverted) */
- if (mmc->op_cond_response & OCR_BUSY)
- return 0;
+ if (mmc->ocr & OCR_BUSY)
+ break;
}
- return IN_PROGRESS;
+ mmc->op_cond_pending = 1;
+ return 0;
}
static int mmc_complete_op_cond(struct mmc *mmc)
{
struct mmc_cmd cmd;
int timeout = 1000;
- uint start;
+ unsigned long start;
int err;
mmc->op_cond_pending = 0;
- start = get_timer(0);
- do {
- err = mmc_send_op_cond_iter(mmc, &cmd, 1);
- if (err)
- return err;
- if (get_timer(start) > timeout)
- return UNUSABLE_ERR;
- udelay(100);
- } while (!(mmc->op_cond_response & OCR_BUSY));
+ if (!(mmc->ocr & OCR_BUSY)) {
+ start = get_timer_masked();
+ while (1) {
+ err = mmc_send_op_cond_iter(mmc, 1);
+ if (err)
+ return err;
+ if (mmc->ocr & OCR_BUSY)
+ break;
+ if (get_timer(start) > timeout)
+ return UNUSABLE_ERR;
+ udelay(100);
+ }
+ }
if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
if (err)
return err;
+
+ mmc->ocr = cmd.response[0];
}
mmc->version = MMC_VERSION_UNKNOWN;
- mmc->ocr = cmd.response[0];
mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
mmc->rca = 1;
INIT_LIST_HEAD(&mmc->link);
list_add_tail(&mmc->link, &mmc_devices);
+ mmc_dev_count++;
return mmc;
}
if (err == TIMEOUT) {
err = mmc_send_op_cond(mmc);
- if (err && err != IN_PROGRESS) {
+ if (err) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
printf("Card did not respond to voltage select!\n");
#endif
}
}
- if (err == IN_PROGRESS)
+ if (!err)
mmc->init_in_progress = 1;
return err;
{
int err = 0;
+ mmc->init_in_progress = 0;
if (mmc->op_cond_pending)
err = mmc_complete_op_cond(mmc);
mmc->has_init = 0;
else
mmc->has_init = 1;
- mmc->init_in_progress = 0;
return err;
}
int mmc_init(struct mmc *mmc)
{
- int err = IN_PROGRESS;
- unsigned start;
+ int err = 0;
+ unsigned long start;
if (mmc->has_init)
return 0;
if (!mmc->init_in_progress)
err = mmc_start_init(mmc);
- if (!err || err == IN_PROGRESS)
+ if (!err)
err = mmc_complete_init(mmc);
debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
return err;
{
struct mmc *m;
struct list_head *entry;
+ char *mmc_type;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
+ if (m->has_init)
+ mmc_type = IS_SD(m) ? "SD" : "eMMC";
+ else
+ mmc_type = NULL;
+
printf("%s: %d", m->cfg->name, m->block_dev.dev);
+ if (mmc_type)
+ printf(" (%s)", mmc_type);
if (entry->next != &mmc_devices) {
printf("%c", separator);
return cur_dev_num;
}
+int get_mmc_dev_count(void)
+{
+ return mmc_dev_count;
+}
+
void mmc_set_preinit(struct mmc *mmc, int preinit)
{
mmc->preinit = preinit;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
+#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
+ mmc_set_preinit(m, 1);
+#endif
if (m->preinit)
mmc_start_init(m);
}
int mmc_initialize(bd_t *bis)
{
+ static int initialized = 0;
+ if (initialized) /* Avoid initializing mmc multiple times */
+ return 0;
+ initialized = 1;
+
INIT_LIST_HEAD (&mmc_devices);
cur_dev_num = 0;
+#ifndef CONFIG_DM_MMC
if (board_mmc_init(bis) < 0)
cpu_mmc_init(bis);
+#endif
#ifndef CONFIG_SPL_BUILD
print_mmc_devices(',');
*/
int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
{
+ int ret;
+ ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
+
+ ret = mmc_send_ext_csd(mmc, ext_csd);
+ if (ret)
+ return ret;
+
+ if (ext_csd[EXT_CSD_RST_N_FUNCTION] != 0 &&
+ ext_csd[EXT_CSD_RST_N_FUNCTION] != enable) {
+ printf("RST_N_FUNCTION is already set to %u; cannot change to %u\n",
+ ext_csd[EXT_CSD_RST_N_FUNCTION], enable);
+ return -EINVAL;
+ }
return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_RST_N_FUNCTION,
enable);
}
projects / karo-tx-uboot.git / blobdiff