#include <div64.h>
#include "mmc_private.h"
-static const unsigned int sd_au_size[] = {
- 0, SZ_16K / 512, SZ_32K / 512,
- SZ_64K / 512, SZ_128K / 512, SZ_256K / 512,
- SZ_512K / 512, SZ_1M / 512, SZ_2M / 512,
- SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512,
- SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512,
-};
+static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage);
+static int mmc_power_cycle(struct mmc *mmc);
+static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps);
#if CONFIG_IS_ENABLED(MMC_TINY)
static struct mmc mmc_static;
#endif
#if !CONFIG_IS_ENABLED(DM_MMC)
+
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
+{
+ return -ENOSYS;
+}
+#endif
+
__weak int board_mmc_getwp(struct mmc *mmc)
{
return -1;
static uint mmc_mode2freq(struct mmc *mmc, enum bus_mode mode)
{
static const int freqs[] = {
+ [MMC_LEGACY] = 25000000,
[SD_LEGACY] = 25000000,
[MMC_HS] = 26000000,
[SD_HS] = 50000000,
+ [MMC_HS_52] = 52000000,
+ [MMC_DDR_52] = 52000000,
[UHS_SDR12] = 25000000,
[UHS_SDR25] = 50000000,
[UHS_SDR50] = 100000000,
- [UHS_SDR104] = 208000000,
[UHS_DDR50] = 50000000,
- [MMC_HS_52] = 52000000,
- [MMC_DDR_52] = 52000000,
+ [UHS_SDR104] = 208000000,
[MMC_HS_200] = 200000000,
};
{
mmc->selected_mode = mode;
mmc->tran_speed = mmc_mode2freq(mmc, mode);
- debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode),
- mmc->tran_speed / 1000000);
+ mmc->ddr_mode = mmc_is_mode_ddr(mode);
+ pr_debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode),
+ mmc->tran_speed / 1000000);
return 0;
}
(cmd.response[0] & MMC_STATUS_CURR_STATE) !=
MMC_STATE_PRG)
break;
- else if (cmd.response[0] & MMC_STATUS_MASK) {
+
+ if (cmd.response[0] & MMC_STATUS_MASK) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("Status Error: 0x%08X\n",
- cmd.response[0]);
+ pr_err("Status Error: 0x%08X\n",
+ cmd.response[0]);
#endif
return -ECOMM;
}
mmc_trace_state(mmc, &cmd);
if (timeout <= 0) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("Timeout waiting card ready\n");
+ pr_err("Timeout waiting card ready\n");
#endif
return -ETIMEDOUT;
}
int mmc_set_blocklen(struct mmc *mmc, int len)
{
struct mmc_cmd cmd;
+ int err;
if (mmc->ddr_mode)
return 0;
cmd.resp_type = MMC_RSP_R1;
cmd.cmdarg = len;
- return mmc_send_cmd(mmc, &cmd, NULL);
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+
+#ifdef CONFIG_MMC_QUIRKS
+ if (err && (mmc->quirks & MMC_QUIRK_RETRY_SET_BLOCKLEN)) {
+ int retries = 4;
+ /*
+ * It has been seen that SET_BLOCKLEN may fail on the first
+ * attempt, let's try a few more time
+ */
+ do {
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (!err)
+ break;
+ } while (retries--);
+ }
+#endif
+
+ return err;
+}
+
+#ifdef MMC_SUPPORTS_TUNING
+static const u8 tuning_blk_pattern_4bit[] = {
+ 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
+ 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
+ 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
+ 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
+ 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
+ 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
+ 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
+ 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
+};
+
+static const u8 tuning_blk_pattern_8bit[] = {
+ 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
+ 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
+ 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
+ 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
+ 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
+ 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
+ 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
+ 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
+ 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
+ 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
+ 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
+ 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
+ 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
+ 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
+ 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
+ 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
+};
+
+int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error)
+{
+ struct mmc_cmd cmd;
+ struct mmc_data data;
+ const u8 *tuning_block_pattern;
+ int size, err;
+
+ if (mmc->bus_width == 8) {
+ tuning_block_pattern = tuning_blk_pattern_8bit;
+ size = sizeof(tuning_blk_pattern_8bit);
+ } else if (mmc->bus_width == 4) {
+ tuning_block_pattern = tuning_blk_pattern_4bit;
+ size = sizeof(tuning_blk_pattern_4bit);
+ } else {
+ return -EINVAL;
+ }
+
+ ALLOC_CACHE_ALIGN_BUFFER(u8, data_buf, size);
+
+ cmd.cmdidx = opcode;
+ cmd.cmdarg = 0;
+ cmd.resp_type = MMC_RSP_R1;
+
+ data.dest = (void *)data_buf;
+ data.blocks = 1;
+ data.blocksize = size;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_send_cmd(mmc, &cmd, &data);
+ if (err)
+ return err;
+
+ if (memcmp(data_buf, tuning_block_pattern, size))
+ return -EIO;
+
+ return 0;
}
+#endif
static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
lbaint_t blkcnt)
cmd.resp_type = MMC_RSP_R1b;
if (mmc_send_cmd(mmc, &cmd, NULL)) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("mmc fail to send stop cmd\n");
+ pr_err("mmc fail to send stop cmd\n");
#endif
return 0;
}
if ((start + blkcnt) > block_dev->lba) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
- start + blkcnt, block_dev->lba);
+ pr_err("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
+ start + blkcnt, block_dev->lba);
#endif
return 0;
}
if (mmc_set_blocklen(mmc, mmc->read_bl_len)) {
- debug("%s: Failed to set blocklen\n", __func__);
+ pr_debug("%s: Failed to set blocklen\n", __func__);
return 0;
}
cur = (blocks_todo > mmc->cfg->b_max) ?
mmc->cfg->b_max : blocks_todo;
if (mmc_read_blocks(mmc, dst, start, cur) != cur) {
- debug("%s: Failed to read blocks\n", __func__);
+ pr_debug("%s: Failed to read blocks\n", __func__);
return 0;
}
blocks_todo -= cur;
return 0;
}
-static int sd_send_op_cond(struct mmc *mmc)
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+static int mmc_switch_voltage(struct mmc *mmc, int signal_voltage)
+{
+ struct mmc_cmd cmd;
+ int err = 0;
+
+ /*
+ * Send CMD11 only if the request is to switch the card to
+ * 1.8V signalling.
+ */
+ if (signal_voltage == MMC_SIGNAL_VOLTAGE_330)
+ return mmc_set_signal_voltage(mmc, signal_voltage);
+
+ cmd.cmdidx = SD_CMD_SWITCH_UHS18V;
+ cmd.cmdarg = 0;
+ cmd.resp_type = MMC_RSP_R1;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ return err;
+
+ if (!mmc_host_is_spi(mmc) && (cmd.response[0] & MMC_STATUS_ERROR))
+ return -EIO;
+
+ /*
+ * The card should drive cmd and dat[0:3] low immediately
+ * after the response of cmd11, but wait 100 us to be sure
+ */
+ err = mmc_wait_dat0(mmc, 0, 100);
+ if (err == -ENOSYS)
+ udelay(100);
+ else if (err)
+ return -ETIMEDOUT;
+
+ /*
+ * During a signal voltage level switch, the clock must be gated
+ * for 5 ms according to the SD spec
+ */
+ mmc_set_clock(mmc, mmc->clock, true);
+
+ err = mmc_set_signal_voltage(mmc, signal_voltage);
+ if (err)
+ return err;
+
+ /* Keep clock gated for at least 10 ms, though spec only says 5 ms */
+ mdelay(10);
+ mmc_set_clock(mmc, mmc->clock, false);
+
+ /*
+ * Failure to switch is indicated by the card holding
+ * dat[0:3] low. Wait for at least 1 ms according to spec
+ */
+ err = mmc_wait_dat0(mmc, 1, 1000);
+ if (err == -ENOSYS)
+ udelay(1000);
+ else if (err)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+#endif
+
+static int sd_send_op_cond(struct mmc *mmc, bool uhs_en)
{
int timeout = 1000;
int err;
if (mmc->version == SD_VERSION_2)
cmd.cmdarg |= OCR_HCS;
+ if (uhs_en)
+ cmd.cmdarg |= OCR_S18R;
+
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
mmc->ocr = cmd.response[0];
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ if (uhs_en && !(mmc_host_is_spi(mmc)) && (cmd.response[0] & 0x41000000)
+ == 0x41000000) {
+ err = mmc_switch_voltage(mmc, MMC_SIGNAL_VOLTAGE_180);
+ if (err)
+ return err;
+ }
+#endif
+
mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
mmc->rca = 0;
}
-static int mmc_change_freq(struct mmc *mmc)
+static int mmc_set_card_speed(struct mmc *mmc, enum bus_mode mode)
{
- ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
- char cardtype;
int err;
+ int speed_bits;
- mmc->card_caps = 0;
+ ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
- if (mmc_host_is_spi(mmc))
- return 0;
+ switch (mode) {
+ case MMC_HS:
+ case MMC_HS_52:
+ case MMC_DDR_52:
+ speed_bits = EXT_CSD_TIMING_HS;
+ break;
+#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
+ case MMC_HS_200:
+ speed_bits = EXT_CSD_TIMING_HS200;
+ break;
+#endif
+ case MMC_LEGACY:
+ speed_bits = EXT_CSD_TIMING_LEGACY;
+ break;
+ default:
+ return -EINVAL;
+ }
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
+ speed_bits);
+ if (err)
+ return err;
- /* Only version 4 supports high-speed */
- if (mmc->version < MMC_VERSION_4)
- return 0;
+ if ((mode == MMC_HS) || (mode == MMC_HS_52)) {
+ /* Now check to see that it worked */
+ err = mmc_send_ext_csd(mmc, test_csd);
+ if (err)
+ return err;
- mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT;
+ /* No high-speed support */
+ if (!test_csd[EXT_CSD_HS_TIMING])
+ return -ENOTSUPP;
+ }
- err = mmc_send_ext_csd(mmc, ext_csd);
+ return 0;
+}
- if (err)
- return err;
+static int mmc_get_capabilities(struct mmc *mmc)
+{
+ u8 *ext_csd = mmc->ext_csd;
+ char cardtype;
- cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0xf;
+ mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(MMC_LEGACY);
- err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1);
+ if (mmc_host_is_spi(mmc))
+ return 0;
- if (err)
- return err;
+ /* Only version 4 supports high-speed */
+ if (mmc->version < MMC_VERSION_4)
+ return 0;
- /* Now check to see that it worked */
- err = mmc_send_ext_csd(mmc, ext_csd);
+ if (!ext_csd) {
+ pr_err("No ext_csd found!\n"); /* this should enver happen */
+ return -ENOTSUPP;
+ }
- if (err)
- return err;
+ mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT;
- /* No high-speed support */
- if (!ext_csd[EXT_CSD_HS_TIMING])
- return 0;
+ cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0x3f;
+ mmc->cardtype = cardtype;
- /* High Speed is set, there are two types: 52MHz and 26MHz */
+#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
+ if (cardtype & (EXT_CSD_CARD_TYPE_HS200_1_2V |
+ EXT_CSD_CARD_TYPE_HS200_1_8V)) {
+ mmc->card_caps |= MMC_MODE_HS200;
+ }
+#endif
if (cardtype & EXT_CSD_CARD_TYPE_52) {
- if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
+ if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
mmc->card_caps |= MMC_MODE_DDR_52MHz;
- mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
- } else {
- mmc->card_caps |= MMC_MODE_HS;
+ mmc->card_caps |= MMC_MODE_HS_52MHz;
}
+ if (cardtype & EXT_CSD_CARD_TYPE_26)
+ mmc->card_caps |= MMC_MODE_HS;
return 0;
}
return 0;
}
+#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
+static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num)
+{
+ int forbidden = 0;
+ bool change = false;
+
+ if (part_num & PART_ACCESS_MASK)
+ forbidden = MMC_CAP(MMC_HS_200);
+
+ if (MMC_CAP(mmc->selected_mode) & forbidden) {
+ pr_debug("selected mode (%s) is forbidden for part %d\n",
+ mmc_mode_name(mmc->selected_mode), part_num);
+ change = true;
+ } else if (mmc->selected_mode != mmc->best_mode) {
+ pr_debug("selected mode is not optimal\n");
+ change = true;
+ }
+
+ if (change)
+ return mmc_select_mode_and_width(mmc,
+ mmc->card_caps & ~forbidden);
+
+ return 0;
+}
+#else
+static inline int mmc_boot_part_access_chk(struct mmc *mmc,
+ unsigned int part_num)
+{
+ return 0;
+}
+#endif
+
int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
{
int ret;
+ ret = mmc_boot_part_access_chk(mmc, part_num);
+ if (ret)
+ return ret;
+
ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
(mmc->part_config & ~PART_ACCESS_MASK)
| (part_num & PART_ACCESS_MASK));
return ret;
}
+#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
int mmc_hwpart_config(struct mmc *mmc,
const struct mmc_hwpart_conf *conf,
enum mmc_hwpart_conf_mode mode)
return -EINVAL;
if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) {
- printf("eMMC >= 4.4 required for enhanced user data area\n");
+ pr_err("eMMC >= 4.4 required for enhanced user data area\n");
return -EMEDIUMTYPE;
}
if (!(mmc->part_support & PART_SUPPORT)) {
- printf("Card does not support partitioning\n");
+ pr_err("Card does not support partitioning\n");
return -EMEDIUMTYPE;
}
if (!mmc->hc_wp_grp_size) {
- printf("Card does not define HC WP group size\n");
+ pr_err("Card does not define HC WP group size\n");
return -EMEDIUMTYPE;
}
if (conf->user.enh_size) {
if (conf->user.enh_size % mmc->hc_wp_grp_size ||
conf->user.enh_start % mmc->hc_wp_grp_size) {
- printf("User data enhanced area not HC WP group "
+ pr_err("User data enhanced area not HC WP group "
"size aligned\n");
return -EINVAL;
}
for (pidx = 0; pidx < 4; pidx++) {
if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) {
- printf("GP%i partition not HC WP group size "
+ pr_err("GP%i partition not HC WP group size "
"aligned\n", pidx+1);
return -EINVAL;
}
}
if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) {
- printf("Card does not support enhanced attribute\n");
+ pr_err("Card does not support enhanced attribute\n");
return -EMEDIUMTYPE;
}
(ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) +
ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT];
if (tot_enh_size_mult > max_enh_size_mult) {
- printf("Total enhanced size exceeds maximum (%u > %u)\n",
+ pr_err("Total enhanced size exceeds maximum (%u > %u)\n",
tot_enh_size_mult, max_enh_size_mult);
return -EMEDIUMTYPE;
}
if (ext_csd[EXT_CSD_PARTITION_SETTING] &
EXT_CSD_PARTITION_SETTING_COMPLETED) {
- printf("Card already partitioned\n");
+ pr_err("Card already partitioned\n");
return -EPERM;
}
return 0;
}
+#endif
#if !CONFIG_IS_ENABLED(DM_MMC)
int mmc_getcd(struct mmc *mmc)
}
-static int sd_change_freq(struct mmc *mmc)
+static int sd_get_capabilities(struct mmc *mmc)
{
int err;
struct mmc_cmd cmd;
ALLOC_CACHE_ALIGN_BUFFER(__be32, switch_status, 16);
struct mmc_data data;
int timeout;
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ u32 sd3_bus_mode;
+#endif
- mmc->card_caps = 0;
+ mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(SD_LEGACY);
if (mmc_host_is_spi(mmc))
return 0;
}
/* If high-speed isn't supported, we return */
- if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED))
- return 0;
+ if (__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)
+ mmc->card_caps |= MMC_CAP(SD_HS);
- /*
- * If the host doesn't support SD_HIGHSPEED, do not switch card to
- * HIGHSPEED mode even if the card support SD_HIGHSPPED.
- * This can avoid furthur problem when the card runs in different
- * mode between the host.
- */
- if (!((mmc->cfg->host_caps & MMC_MODE_HS_52MHz) &&
- (mmc->cfg->host_caps & MMC_MODE_HS)))
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ /* Version before 3.0 don't support UHS modes */
+ if (mmc->version < SD_VERSION_3)
return 0;
- err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)switch_status);
+ sd3_bus_mode = __be32_to_cpu(switch_status[3]) >> 16 & 0x1f;
+ if (sd3_bus_mode & SD_MODE_UHS_SDR104)
+ mmc->card_caps |= MMC_CAP(UHS_SDR104);
+ if (sd3_bus_mode & SD_MODE_UHS_SDR50)
+ mmc->card_caps |= MMC_CAP(UHS_SDR50);
+ if (sd3_bus_mode & SD_MODE_UHS_SDR25)
+ mmc->card_caps |= MMC_CAP(UHS_SDR25);
+ if (sd3_bus_mode & SD_MODE_UHS_SDR12)
+ mmc->card_caps |= MMC_CAP(UHS_SDR12);
+ if (sd3_bus_mode & SD_MODE_UHS_DDR50)
+ mmc->card_caps |= MMC_CAP(UHS_DDR50);
+#endif
+
+ return 0;
+}
+
+static int sd_set_card_speed(struct mmc *mmc, enum bus_mode mode)
+{
+ int err;
+
+ ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
+ int speed;
+
+ switch (mode) {
+ case SD_LEGACY:
+ speed = UHS_SDR12_BUS_SPEED;
+ break;
+ case SD_HS:
+ speed = HIGH_SPEED_BUS_SPEED;
+ break;
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ case UHS_SDR12:
+ speed = UHS_SDR12_BUS_SPEED;
+ break;
+ case UHS_SDR25:
+ speed = UHS_SDR25_BUS_SPEED;
+ break;
+ case UHS_SDR50:
+ speed = UHS_SDR50_BUS_SPEED;
+ break;
+ case UHS_DDR50:
+ speed = UHS_DDR50_BUS_SPEED;
+ break;
+ case UHS_SDR104:
+ speed = UHS_SDR104_BUS_SPEED;
+ break;
+#endif
+ default:
+ return -EINVAL;
+ }
+
+ err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, speed, (u8 *)switch_status);
+ if (err)
+ return err;
+ if (((__be32_to_cpu(switch_status[4]) >> 24) & 0xF) != speed)
+ return -ENOTSUPP;
+
+ return 0;
+}
+
+int sd_select_bus_width(struct mmc *mmc, int w)
+{
+ int err;
+ struct mmc_cmd cmd;
+
+ if ((w != 4) && (w != 1))
+ return -EINVAL;
+
+ cmd.cmdidx = MMC_CMD_APP_CMD;
+ cmd.resp_type = MMC_RSP_R1;
+ cmd.cmdarg = mmc->rca << 16;
+
+ err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
return err;
- if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000)
- mmc->card_caps |= MMC_MODE_HS;
+ cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
+ cmd.resp_type = MMC_RSP_R1;
+ if (w == 4)
+ cmd.cmdarg = 2;
+ else if (w == 1)
+ cmd.cmdarg = 0;
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (err)
+ return err;
return 0;
}
+#if CONFIG_IS_ENABLED(MMC_WRITE)
static int sd_read_ssr(struct mmc *mmc)
{
+ static const unsigned int sd_au_size[] = {
+ 0, SZ_16K / 512, SZ_32K / 512,
+ SZ_64K / 512, SZ_128K / 512, SZ_256K / 512,
+ SZ_512K / 512, SZ_1M / 512, SZ_2M / 512,
+ SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512,
+ SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512,
+ SZ_64M / 512,
+ };
int err, i;
struct mmc_cmd cmd;
ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16);
mmc->ssr.erase_offset = eo * 1000;
}
} else {
- debug("Invalid Allocation Unit Size.\n");
+ pr_debug("Invalid Allocation Unit Size.\n");
}
return 0;
}
-
+#endif
/* frequency bases */
/* divided by 10 to be nice to platforms without floating point */
static const int fbase[] = {
80,
};
+static inline int bus_width(uint cap)
+{
+ if (cap == MMC_MODE_8BIT)
+ return 8;
+ if (cap == MMC_MODE_4BIT)
+ return 4;
+ if (cap == MMC_MODE_1BIT)
+ return 1;
+ pr_warn("invalid bus witdh capability 0x%x\n", cap);
+ return 0;
+}
+
#if !CONFIG_IS_ENABLED(DM_MMC)
-static void mmc_set_ios(struct mmc *mmc)
+#ifdef MMC_SUPPORTS_TUNING
+static int mmc_execute_tuning(struct mmc *mmc, uint opcode)
+{
+ return -ENOTSUPP;
+}
+#endif
+
+static void mmc_send_init_stream(struct mmc *mmc)
+{
+}
+
+static int mmc_set_ios(struct mmc *mmc)
{
+ int ret = 0;
+
if (mmc->cfg->ops->set_ios)
- mmc->cfg->ops->set_ios(mmc);
+ ret = mmc->cfg->ops->set_ios(mmc);
+
+ return ret;
}
#endif
-void mmc_set_clock(struct mmc *mmc, uint clock)
+int mmc_set_clock(struct mmc *mmc, uint clock, bool disable)
{
- if (clock > mmc->cfg->f_max)
- clock = mmc->cfg->f_max;
+ if (!disable) {
+ if (clock > mmc->cfg->f_max)
+ clock = mmc->cfg->f_max;
- if (clock < mmc->cfg->f_min)
- clock = mmc->cfg->f_min;
+ if (clock < mmc->cfg->f_min)
+ clock = mmc->cfg->f_min;
+ }
mmc->clock = clock;
+ mmc->clk_disable = disable;
- mmc_set_ios(mmc);
+ return mmc_set_ios(mmc);
}
-static void mmc_set_bus_width(struct mmc *mmc, uint width)
+static int mmc_set_bus_width(struct mmc *mmc, uint width)
{
mmc->bus_width = width;
- mmc_set_ios(mmc);
+ return mmc_set_ios(mmc);
}
#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG)
{
enum bus_mode mode;
- printf("%s: widths [", text);
+ pr_debug("%s: widths [", text);
if (caps & MMC_MODE_8BIT)
- printf("8, ");
+ pr_debug("8, ");
if (caps & MMC_MODE_4BIT)
- printf("4, ");
- printf("1] modes [");
-
+ pr_debug("4, ");
+ if (caps & MMC_MODE_1BIT)
+ pr_debug("1, ");
+ pr_debug("\b\b] modes [");
for (mode = MMC_LEGACY; mode < MMC_MODES_END; mode++)
if (MMC_CAP(mode) & caps)
- printf("%s, ", mmc_mode_name(mode));
- printf("\b\b]\n");
+ pr_debug("%s, ", mmc_mode_name(mode));
+ pr_debug("\b\b]\n");
}
#endif
-static int sd_select_bus_freq_width(struct mmc *mmc)
+struct mode_width_tuning {
+ enum bus_mode mode;
+ uint widths;
+#ifdef MMC_SUPPORTS_TUNING
+ uint tuning;
+#endif
+};
+
+#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
+int mmc_voltage_to_mv(enum mmc_voltage voltage)
+{
+ switch (voltage) {
+ case MMC_SIGNAL_VOLTAGE_000: return 0;
+ case MMC_SIGNAL_VOLTAGE_330: return 3300;
+ case MMC_SIGNAL_VOLTAGE_180: return 1800;
+ case MMC_SIGNAL_VOLTAGE_120: return 1200;
+ }
+ return -EINVAL;
+}
+
+static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage)
{
int err;
- struct mmc_cmd cmd;
- err = sd_change_freq(mmc);
+ if (mmc->signal_voltage == signal_voltage)
+ return 0;
+
+ mmc->signal_voltage = signal_voltage;
+ err = mmc_set_ios(mmc);
if (err)
- return err;
+ pr_debug("unable to set voltage (err %d)\n", err);
- /* Restrict card's capabilities by what the host can do */
- mmc->card_caps &= mmc->cfg->host_caps;
+ return err;
+}
+#else
+static inline int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage)
+{
+ return 0;
+}
+#endif
- if (mmc->card_caps & MMC_MODE_4BIT) {
- cmd.cmdidx = MMC_CMD_APP_CMD;
- cmd.resp_type = MMC_RSP_R1;
- cmd.cmdarg = mmc->rca << 16;
+static const struct mode_width_tuning sd_modes_by_pref[] = {
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+#ifdef MMC_SUPPORTS_TUNING
+ {
+ .mode = UHS_SDR104,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ .tuning = MMC_CMD_SEND_TUNING_BLOCK
+ },
+#endif
+ {
+ .mode = UHS_SDR50,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+ {
+ .mode = UHS_DDR50,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+ {
+ .mode = UHS_SDR25,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+#endif
+ {
+ .mode = SD_HS,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ {
+ .mode = UHS_SDR12,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+#endif
+ {
+ .mode = SD_LEGACY,
+ .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
+ }
+};
- err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err)
- return err;
+#define for_each_sd_mode_by_pref(caps, mwt) \
+ for (mwt = sd_modes_by_pref;\
+ mwt < sd_modes_by_pref + ARRAY_SIZE(sd_modes_by_pref);\
+ mwt++) \
+ if (caps & MMC_CAP(mwt->mode))
- cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
- cmd.resp_type = MMC_RSP_R1;
- cmd.cmdarg = 2;
- err = mmc_send_cmd(mmc, &cmd, NULL);
- if (err)
- return err;
+static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps)
+{
+ int err;
+ uint widths[] = {MMC_MODE_4BIT, MMC_MODE_1BIT};
+ const struct mode_width_tuning *mwt;
+#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
+ bool uhs_en = (mmc->ocr & OCR_S18R) ? true : false;
+#else
+ bool uhs_en = false;
+#endif
+ uint caps;
- mmc_set_bus_width(mmc, 4);
- }
+#ifdef DEBUG
+ mmc_dump_capabilities("sd card", card_caps);
+ mmc_dump_capabilities("host", mmc->host_caps);
+#endif
- err = sd_read_ssr(mmc);
- if (err)
- return err;
+ /* Restrict card's capabilities by what the host can do */
+ caps = card_caps & mmc->host_caps;
+
+ if (!uhs_en)
+ caps &= ~UHS_CAPS;
+
+ for_each_sd_mode_by_pref(caps, mwt) {
+ uint *w;
+
+ for (w = widths; w < widths + ARRAY_SIZE(widths); w++) {
+ if (*w & caps & mwt->widths) {
+ pr_debug("trying mode %s width %d (at %d MHz)\n",
+ mmc_mode_name(mwt->mode),
+ bus_width(*w),
+ mmc_mode2freq(mmc, mwt->mode) / 1000000);
+
+ /* configure the bus width (card + host) */
+ err = sd_select_bus_width(mmc, bus_width(*w));
+ if (err)
+ goto error;
+ mmc_set_bus_width(mmc, bus_width(*w));
+
+ /* configure the bus mode (card) */
+ err = sd_set_card_speed(mmc, mwt->mode);
+ if (err)
+ goto error;
+
+ /* configure the bus mode (host) */
+ mmc_select_mode(mmc, mwt->mode);
+ mmc_set_clock(mmc, mmc->tran_speed, false);
+
+#ifdef MMC_SUPPORTS_TUNING
+ /* execute tuning if needed */
+ if (mwt->tuning && !mmc_host_is_spi(mmc)) {
+ err = mmc_execute_tuning(mmc,
+ mwt->tuning);
+ if (err) {
+ pr_debug("tuning failed\n");
+ goto error;
+ }
+ }
+#endif
- if (mmc->card_caps & MMC_MODE_HS)
- mmc_select_mode(mmc, SD_HS);
- else
- mmc_select_mode(mmc, SD_LEGACY);
+#if CONFIG_IS_ENABLED(MMC_WRITE)
+ err = sd_read_ssr(mmc);
+ if (!err)
+ pr_warn("unable to read ssr\n");
+#endif
+ if (!err)
+ return 0;
- return 0;
+error:
+ /* revert to a safer bus speed */
+ mmc_select_mode(mmc, SD_LEGACY);
+ mmc_set_clock(mmc, mmc->tran_speed, false);
+ }
+ }
+ }
+
+ pr_err("unable to select a mode\n");
+ return -ENOTSUPP;
}
/*
const u8 *ext_csd = mmc->ext_csd;
ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
+ if (mmc->version < MMC_VERSION_4)
+ return 0;
+
err = mmc_send_ext_csd(mmc, test_csd);
if (err)
return err;
return -EBADMSG;
}
-static int mmc_select_bus_freq_width(struct mmc *mmc)
+#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
+static int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode,
+ uint32_t allowed_mask)
+{
+ u32 card_mask = 0;
+
+ switch (mode) {
+ case MMC_HS_200:
+ if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_8V)
+ card_mask |= MMC_SIGNAL_VOLTAGE_180;
+ if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_2V)
+ card_mask |= MMC_SIGNAL_VOLTAGE_120;
+ break;
+ case MMC_DDR_52:
+ if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
+ card_mask |= MMC_SIGNAL_VOLTAGE_330 |
+ MMC_SIGNAL_VOLTAGE_180;
+ if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_2V)
+ card_mask |= MMC_SIGNAL_VOLTAGE_120;
+ break;
+ default:
+ card_mask |= MMC_SIGNAL_VOLTAGE_330;
+ break;
+ }
+
+ while (card_mask & allowed_mask) {
+ enum mmc_voltage best_match;
+
+ best_match = 1 << (ffs(card_mask & allowed_mask) - 1);
+ if (!mmc_set_signal_voltage(mmc, best_match))
+ return 0;
+
+ allowed_mask &= ~best_match;
+ }
+
+ return -ENOTSUPP;
+}
+#else
+static inline int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode,
+ uint32_t allowed_mask)
+{
+ return 0;
+}
+#endif
+
+static const struct mode_width_tuning mmc_modes_by_pref[] = {
+#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
+ {
+ .mode = MMC_HS_200,
+ .widths = MMC_MODE_8BIT | MMC_MODE_4BIT,
+ .tuning = MMC_CMD_SEND_TUNING_BLOCK_HS200
+ },
+#endif
+ {
+ .mode = MMC_DDR_52,
+ .widths = MMC_MODE_8BIT | MMC_MODE_4BIT,
+ },
+ {
+ .mode = MMC_HS_52,
+ .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+ {
+ .mode = MMC_HS,
+ .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
+ },
+ {
+ .mode = MMC_LEGACY,
+ .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
+ }
+};
+
+#define for_each_mmc_mode_by_pref(caps, mwt) \
+ for (mwt = mmc_modes_by_pref;\
+ mwt < mmc_modes_by_pref + ARRAY_SIZE(mmc_modes_by_pref);\
+ mwt++) \
+ if (caps & MMC_CAP(mwt->mode))
+
+static const struct ext_csd_bus_width {
+ uint cap;
+ bool is_ddr;
+ uint ext_csd_bits;
+} ext_csd_bus_width[] = {
+ {MMC_MODE_8BIT, true, EXT_CSD_DDR_BUS_WIDTH_8},
+ {MMC_MODE_4BIT, true, EXT_CSD_DDR_BUS_WIDTH_4},
+ {MMC_MODE_8BIT, false, EXT_CSD_BUS_WIDTH_8},
+ {MMC_MODE_4BIT, false, EXT_CSD_BUS_WIDTH_4},
+ {MMC_MODE_1BIT, false, EXT_CSD_BUS_WIDTH_1},
+};
+
+#define for_each_supported_width(caps, ddr, ecbv) \
+ for (ecbv = ext_csd_bus_width;\
+ ecbv < ext_csd_bus_width + ARRAY_SIZE(ext_csd_bus_width);\
+ ecbv++) \
+ if ((ddr == ecbv->is_ddr) && (caps & ecbv->cap))
+
+static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps)
{
- /* An array of possible bus widths in order of preference */
- static const unsigned int ext_csd_bits[] = {
- EXT_CSD_DDR_BUS_WIDTH_8,
- EXT_CSD_DDR_BUS_WIDTH_4,
- EXT_CSD_BUS_WIDTH_8,
- EXT_CSD_BUS_WIDTH_4,
- EXT_CSD_BUS_WIDTH_1,
- };
- /* An array to map CSD bus widths to host cap bits */
- static const unsigned int ext_to_hostcaps[] = {
- [EXT_CSD_DDR_BUS_WIDTH_4] =
- MMC_MODE_DDR_52MHz | MMC_MODE_4BIT,
- [EXT_CSD_DDR_BUS_WIDTH_8] =
- MMC_MODE_DDR_52MHz | MMC_MODE_8BIT,
- [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT,
- [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT,
- };
- /* An array to map chosen bus width to an integer */
- static const unsigned int widths[] = {
- 8, 4, 8, 4, 1,
- };
int err;
- int idx;
+ const struct mode_width_tuning *mwt;
+ const struct ext_csd_bus_width *ecbw;
- err = mmc_change_freq(mmc);
- if (err)
- return err;
+#ifdef DEBUG
+ mmc_dump_capabilities("mmc", card_caps);
+ mmc_dump_capabilities("host", mmc->host_caps);
+#endif
/* Restrict card's capabilities by what the host can do */
- mmc->card_caps &= mmc->cfg->host_caps;
+ card_caps &= mmc->host_caps;
/* Only version 4 of MMC supports wider bus widths */
if (mmc->version < MMC_VERSION_4)
return 0;
if (!mmc->ext_csd) {
- debug("No ext_csd found!\n"); /* this should enver happen */
+ pr_debug("No ext_csd found!\n"); /* this should enver happen */
return -ENOTSUPP;
}
- for (idx = 0; idx < ARRAY_SIZE(ext_csd_bits); idx++) {
- unsigned int extw = ext_csd_bits[idx];
- unsigned int caps = ext_to_hostcaps[extw];
- /*
- * If the bus width is still not changed,
- * don't try to set the default again.
- * Otherwise, recover from switch attempts
- * by switching to 1-bit bus width.
- */
- if (extw == EXT_CSD_BUS_WIDTH_1 &&
- mmc->bus_width == 1) {
- err = 0;
- break;
- }
-
- /*
- * Check to make sure the card and controller support
- * these capabilities
- */
- if ((mmc->card_caps & caps) != caps)
- continue;
+ mmc_set_clock(mmc, mmc->legacy_speed, false);
+
+ for_each_mmc_mode_by_pref(card_caps, mwt) {
+ for_each_supported_width(card_caps & mwt->widths,
+ mmc_is_mode_ddr(mwt->mode), ecbw) {
+ enum mmc_voltage old_voltage;
+ pr_debug("trying mode %s width %d (at %d MHz)\n",
+ mmc_mode_name(mwt->mode),
+ bus_width(ecbw->cap),
+ mmc_mode2freq(mmc, mwt->mode) / 1000000);
+ old_voltage = mmc->signal_voltage;
+ err = mmc_set_lowest_voltage(mmc, mwt->mode,
+ MMC_ALL_SIGNAL_VOLTAGE);
+ if (err)
+ continue;
- err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_BUS_WIDTH, extw);
+ /* configure the bus width (card + host) */
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH,
+ ecbw->ext_csd_bits & ~EXT_CSD_DDR_FLAG);
+ if (err)
+ goto error;
+ mmc_set_bus_width(mmc, bus_width(ecbw->cap));
- if (err)
- continue;
+ /* configure the bus speed (card) */
+ err = mmc_set_card_speed(mmc, mwt->mode);
+ if (err)
+ goto error;
+
+ /*
+ * configure the bus width AND the ddr mode (card)
+ * The host side will be taken care of in the next step
+ */
+ if (ecbw->ext_csd_bits & EXT_CSD_DDR_FLAG) {
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH,
+ ecbw->ext_csd_bits);
+ if (err)
+ goto error;
+ }
- mmc->ddr_mode = (caps & MMC_MODE_DDR_52MHz) ? 1 : 0;
- mmc_set_bus_width(mmc, widths[idx]);
+ /* configure the bus mode (host) */
+ mmc_select_mode(mmc, mwt->mode);
+ mmc_set_clock(mmc, mmc->tran_speed, false);
+#ifdef MMC_SUPPORTS_TUNING
+
+ /* execute tuning if needed */
+ if (mwt->tuning) {
+ err = mmc_execute_tuning(mmc, mwt->tuning);
+ if (err) {
+ pr_debug("tuning failed\n");
+ goto error;
+ }
+ }
+#endif
- err = mmc_read_and_compare_ext_csd(mmc);
- if (!err)
- break;
+ /* do a transfer to check the configuration */
+ err = mmc_read_and_compare_ext_csd(mmc);
+ if (!err)
+ return 0;
+error:
+ mmc_set_signal_voltage(mmc, old_voltage);
+ /* if an error occured, revert to a safer bus mode */
+ mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1);
+ mmc_select_mode(mmc, MMC_LEGACY);
+ mmc_set_bus_width(mmc, 1);
+ }
}
- if (err)
- return err;
+ pr_err("unable to select a mode\n");
- if (mmc->card_caps & MMC_MODE_HS_52MHz) {
- if (mmc->ddr_mode)
- mmc_select_mode(mmc, MMC_DDR_52);
- else
- mmc_select_mode(mmc, MMC_HS_52);
- } else if (mmc->card_caps & MMC_MODE_HS)
- mmc_select_mode(mmc, MMC_HS);
-
- return err;
+ return -ENOTSUPP;
}
static int mmc_startup_v4(struct mmc *mmc)
u64 capacity;
bool has_parts = false;
bool part_completed;
- u8 *ext_csd;
+ static const u32 mmc_versions[] = {
+ MMC_VERSION_4,
+ MMC_VERSION_4_1,
+ MMC_VERSION_4_2,
+ MMC_VERSION_4_3,
+ MMC_VERSION_4_4,
+ MMC_VERSION_4_41,
+ MMC_VERSION_4_5,
+ MMC_VERSION_5_0,
+ MMC_VERSION_5_1
+ };
+
+ ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4))
return 0;
- ext_csd = malloc_cache_aligned(MMC_MAX_BLOCK_LEN);
- if (!ext_csd)
- return -ENOMEM;
-
- mmc->ext_csd = ext_csd;
-
/* check ext_csd version and capacity */
err = mmc_send_ext_csd(mmc, ext_csd);
if (err)
- return err;
- if (ext_csd[EXT_CSD_REV] >= 2) {
+ goto error;
+
+ /* store the ext csd for future reference */
+ if (!mmc->ext_csd)
+ mmc->ext_csd = malloc(MMC_MAX_BLOCK_LEN);
+ if (!mmc->ext_csd)
+ return -ENOMEM;
+ memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN);
+
+ if (ext_csd[EXT_CSD_REV] > ARRAY_SIZE(mmc_versions))
+ return -EINVAL;
+
+ mmc->version = mmc_versions[ext_csd[EXT_CSD_REV]];
+
+ if (mmc->version >= MMC_VERSION_4_2) {
/*
* According to the JEDEC Standard, the value of
* ext_csd's capacity is valid if the value is more
mmc->capacity_user = capacity;
}
- switch (ext_csd[EXT_CSD_REV]) {
- case 1:
- mmc->version = MMC_VERSION_4_1;
- break;
- case 2:
- mmc->version = MMC_VERSION_4_2;
- break;
- case 3:
- mmc->version = MMC_VERSION_4_3;
- break;
- case 5:
- mmc->version = MMC_VERSION_4_41;
- break;
- case 6:
- mmc->version = MMC_VERSION_4_5;
- break;
- case 7:
- mmc->version = MMC_VERSION_5_0;
- break;
- case 8:
- mmc->version = MMC_VERSION_5_1;
- break;
- }
-
/* The partition data may be non-zero but it is only
* effective if PARTITION_SETTING_COMPLETED is set in
* EXT_CSD, so ignore any data if this bit is not set,
mmc->capacity_gp[i] <<= 19;
}
+#ifndef CONFIG_SPL_BUILD
if (part_completed) {
mmc->enh_user_size =
(ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16) +
if (mmc->high_capacity)
mmc->enh_user_start <<= 9;
}
+#endif
/*
* Host needs to enable ERASE_GRP_DEF bit if device is
EXT_CSD_ERASE_GROUP_DEF, 1);
if (err)
- return err;
+ goto error;
ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
}
if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
+#if CONFIG_IS_ENABLED(MMC_WRITE)
/* Read out group size from ext_csd */
mmc->erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
+#endif
/*
* if high capacity and partition setting completed
* SEC_COUNT is valid even if it is smaller than 2 GiB
capacity *= MMC_MAX_BLOCK_LEN;
mmc->capacity_user = capacity;
}
- } else {
+ }
+#if CONFIG_IS_ENABLED(MMC_WRITE)
+ else {
/* Calculate the group size from the csd value. */
int erase_gsz, erase_gmul;
mmc->erase_grp_size = (erase_gsz + 1)
* (erase_gmul + 1);
}
-
+#endif
+#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
mmc->hc_wp_grp_size = 1024
* ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
* ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
+#endif
mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
return 0;
+error:
+ if (mmc->ext_csd) {
+ free(mmc->ext_csd);
+ mmc->ext_csd = NULL;
+ }
+ return err;
}
static int mmc_startup(struct mmc *mmc)
cmd.resp_type = MMC_RSP_R1;
cmd.cmdarg = 1;
err = mmc_send_cmd(mmc, &cmd, NULL);
-
if (err)
return err;
}
err = mmc_send_cmd(mmc, &cmd, NULL);
+#ifdef CONFIG_MMC_QUIRKS
+ if (err && (mmc->quirks & MMC_QUIRK_RETRY_SEND_CID)) {
+ int retries = 4;
+ /*
+ * It has been seen that SEND_CID may fail on the first
+ * attempt, let's try a few more time
+ */
+ do {
+ err = mmc_send_cmd(mmc, &cmd, NULL);
+ if (!err)
+ break;
+ } while (retries--);
+ }
+#endif
+
if (err)
return err;
mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
+#if CONFIG_IS_ENABLED(MMC_WRITE)
if (IS_SD(mmc))
mmc->write_bl_len = mmc->read_bl_len;
else
mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
+#endif
if (mmc->high_capacity) {
csize = (mmc->csd[1] & 0x3f) << 16
if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
+#if CONFIG_IS_ENABLED(MMC_WRITE)
if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
+#endif
if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
cmd.cmdidx = MMC_CMD_SET_DSR;
cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
cmd.resp_type = MMC_RSP_NONE;
if (mmc_send_cmd(mmc, &cmd, NULL))
- printf("MMC: SET_DSR failed\n");
+ pr_warn("MMC: SET_DSR failed\n");
}
/* Select the card, and put it into Transfer Mode */
/*
* For SD, its erase group is always one sector
*/
+#if CONFIG_IS_ENABLED(MMC_WRITE)
mmc->erase_grp_size = 1;
+#endif
mmc->part_config = MMCPART_NOAVAILABLE;
err = mmc_startup_v4(mmc);
if (err)
return err;
- if (IS_SD(mmc))
- err = sd_select_bus_freq_width(mmc);
- else
- err = mmc_select_bus_freq_width(mmc);
+ if (IS_SD(mmc)) {
+ err = sd_get_capabilities(mmc);
+ if (err)
+ return err;
+ err = sd_select_mode_and_width(mmc, mmc->card_caps);
+ } else {
+ err = mmc_get_capabilities(mmc);
+ if (err)
+ return err;
+ mmc_select_mode_and_width(mmc, mmc->card_caps);
+ }
if (err)
return err;
+ mmc->best_mode = mmc->selected_mode;
/* Fix the block length for DDR mode */
if (mmc->ddr_mode) {
mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
+#if CONFIG_IS_ENABLED(MMC_WRITE)
mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
+#endif
}
/* fill in device description */
ret = device_get_supply_regulator(mmc->dev, "vmmc-supply",
&mmc->vmmc_supply);
if (ret)
- debug("%s: No vmmc supply\n", mmc->dev->name);
+ pr_debug("%s: No vmmc supply\n", mmc->dev->name);
ret = device_get_supply_regulator(mmc->dev, "vqmmc-supply",
&mmc->vqmmc_supply);
if (ret)
- debug("%s: No vqmmc supply\n", mmc->dev->name);
+ pr_debug("%s: No vqmmc supply\n", mmc->dev->name);
+#endif
+#else /* !CONFIG_DM_MMC */
+ /*
+ * Driver model should use a regulator, as above, rather than calling
+ * out to board code.
+ */
+ board_mmc_power_init();
+#endif
+ return 0;
+}
+
+/*
+ * put the host in the initial state:
+ * - turn on Vdd (card power supply)
+ * - configure the bus width and clock to minimal values
+ */
+static void mmc_set_initial_state(struct mmc *mmc)
+{
+ int err;
+
+ /* First try to set 3.3V. If it fails set to 1.8V */
+ err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_330);
+ if (err != 0)
+ err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_180);
+ if (err != 0)
+ pr_warn("mmc: failed to set signal voltage\n");
+
+ mmc_select_mode(mmc, MMC_LEGACY);
+ mmc_set_bus_width(mmc, 1);
+ mmc_set_clock(mmc, 0, false);
+}
+static int mmc_power_on(struct mmc *mmc)
+{
+#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR)
if (mmc->vmmc_supply) {
- ret = regulator_set_enable(mmc->vmmc_supply, true);
+ int ret = regulator_set_enable(mmc->vmmc_supply, true);
+
if (ret) {
puts("Error enabling VMMC supply\n");
return ret;
}
}
#endif
-#else /* !CONFIG_DM_MMC */
- /*
- * Driver model should use a regulator, as above, rather than calling
- * out to board code.
- */
- board_mmc_power_init();
+ return 0;
+}
+
+static int mmc_power_off(struct mmc *mmc)
+{
+ mmc_set_clock(mmc, 0, true);
+#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR)
+ if (mmc->vmmc_supply) {
+ int ret = regulator_set_enable(mmc->vmmc_supply, false);
+
+ if (ret) {
+ pr_debug("Error disabling VMMC supply\n");
+ return ret;
+ }
+ }
#endif
return 0;
}
+static int mmc_power_cycle(struct mmc *mmc)
+{
+ int ret;
+
+ ret = mmc_power_off(mmc);
+ if (ret)
+ return ret;
+ /*
+ * SD spec recommends at least 1ms of delay. Let's wait for 2ms
+ * to be on the safer side.
+ */
+ udelay(2000);
+ return mmc_power_on(mmc);
+}
+
int mmc_start_init(struct mmc *mmc)
{
bool no_card;
+ bool uhs_en = supports_uhs(mmc->cfg->host_caps);
int err;
+ /*
+ * all hosts are capable of 1 bit bus-width and able to use the legacy
+ * timings.
+ */
+ mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) |
+ MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT;
+
+#if !defined(CONFIG_MMC_BROKEN_CD)
/* we pretend there's no card when init is NULL */
no_card = mmc_getcd(mmc) == 0;
+#else
+ no_card = 0;
+#endif
#if !CONFIG_IS_ENABLED(DM_MMC)
no_card = no_card || (mmc->cfg->ops->init == NULL);
#endif
if (no_card) {
mmc->has_init = 0;
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("MMC: no card present\n");
+ pr_err("MMC: no card present\n");
#endif
return -ENOMEDIUM;
}
if (err)
return err;
+#ifdef CONFIG_MMC_QUIRKS
+ mmc->quirks = MMC_QUIRK_RETRY_SET_BLOCKLEN |
+ MMC_QUIRK_RETRY_SEND_CID;
+#endif
+
+ err = mmc_power_cycle(mmc);
+ if (err) {
+ /*
+ * if power cycling is not supported, we should not try
+ * to use the UHS modes, because we wouldn't be able to
+ * recover from an error during the UHS initialization.
+ */
+ pr_debug("Unable to do a full power cycle. Disabling the UHS modes for safety\n");
+ uhs_en = false;
+ mmc->host_caps &= ~UHS_CAPS;
+ err = mmc_power_on(mmc);
+ }
+ if (err)
+ return err;
+
#if CONFIG_IS_ENABLED(DM_MMC)
/* The device has already been probed ready for use */
#else
return err;
#endif
mmc->ddr_mode = 0;
- mmc_set_bus_width(mmc, 1);
- mmc_set_clock(mmc, 1);
+
+retry:
+ mmc_set_initial_state(mmc);
+ mmc_send_init_stream(mmc);
/* Reset the Card */
err = mmc_go_idle(mmc);
err = mmc_send_if_cond(mmc);
/* Now try to get the SD card's operating condition */
- err = sd_send_op_cond(mmc);
+ err = sd_send_op_cond(mmc, uhs_en);
+ if (err && uhs_en) {
+ uhs_en = false;
+ mmc_power_cycle(mmc);
+ goto retry;
+ }
/* If the command timed out, we check for an MMC card */
if (err == -ETIMEDOUT) {
if (err) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
- printf("Card did not respond to voltage select!\n");
+ pr_err("Card did not respond to voltage select!\n");
#endif
return -EOPNOTSUPP;
}
if (!err)
err = mmc_complete_init(mmc);
if (err)
- printf("%s: %d, time %lu\n", __func__, err, get_timer(start));
+ pr_info("%s: %d, time %lu\n", __func__, err, get_timer(start));
return err;
}
mmc->preinit = preinit;
}
-#if CONFIG_IS_ENABLED(DM_MMC) && defined(CONFIG_SPL_BUILD)
-static int mmc_probe(bd_t *bis)
-{
- return 0;
-}
-#elif CONFIG_IS_ENABLED(DM_MMC)
+#if CONFIG_IS_ENABLED(DM_MMC)
static int mmc_probe(bd_t *bis)
{
int ret, i;
uclass_foreach_dev(dev, uc) {
ret = device_probe(dev);
if (ret)
- printf("%s - probe failed: %d\n", dev->name, ret);
+ pr_err("%s - probe failed: %d\n", dev->name, ret);
}
return 0;
projects / people / ms / u-boot.git / blobdiff