| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * MultiMediaCard (MMC), eMMC and Secure Digital (SD) common code which |
| * transitions the card from the standby state to the transfer state. The |
| * common code supports read operations, erase and write operations are in |
| * a separate modules. This code is controller independent. |
| */ |
| |
| #include <commonlib/storage.h> |
| #include "sd_mmc.h" |
| #include "storage.h" |
| #include <string.h> |
| |
| #define DECIMAL_CAPACITY_MULTIPLIER 1000ULL |
| #define HEX_CAPACITY_MULTIPLIER 1024ULL |
| |
| struct capacity { |
| const char *const units; |
| uint64_t bytes; |
| }; |
| |
| static void display_capacity(struct storage_media *media, int partition_number) |
| { |
| uint64_t capacity; |
| uint64_t decimal_divisor; |
| const char *decimal_units; |
| uint64_t hex_divisor; |
| const char *hex_units; |
| int index; |
| const char *name; |
| const char *separator; |
| const struct capacity decimal_list[] = { |
| {"TB", DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER |
| * DECIMAL_CAPACITY_MULTIPLIER |
| * DECIMAL_CAPACITY_MULTIPLIER}, |
| {"GB", DECIMAL_CAPACITY_MULTIPLIER * DECIMAL_CAPACITY_MULTIPLIER |
| * DECIMAL_CAPACITY_MULTIPLIER}, |
| {"MB", DECIMAL_CAPACITY_MULTIPLIER |
| * DECIMAL_CAPACITY_MULTIPLIER}, |
| {"KB", DECIMAL_CAPACITY_MULTIPLIER}, |
| {"B", 1} |
| }; |
| const struct capacity hex_list[] = { |
| {"TiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER |
| * HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER}, |
| {"GiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER |
| * HEX_CAPACITY_MULTIPLIER}, |
| {"MiB", HEX_CAPACITY_MULTIPLIER * HEX_CAPACITY_MULTIPLIER}, |
| {"KiB", HEX_CAPACITY_MULTIPLIER}, |
| {"B", 1} |
| }; |
| |
| /* Get the partition name */ |
| capacity = media->capacity[partition_number]; |
| name = storage_partition_name(media, partition_number); |
| separator = ""; |
| if (CONFIG(COMMONLIB_STORAGE_MMC) && !IS_SD(media)) |
| separator = ": "; |
| |
| /* Determine the decimal divisor for the capacity */ |
| for (index = 0; index < ARRAY_SIZE(decimal_list) - 1; index++) { |
| if (capacity >= decimal_list[index].bytes) |
| break; |
| } |
| decimal_divisor = decimal_list[index].bytes; |
| decimal_units = decimal_list[index].units; |
| |
| /* Determine the hex divisor for the capacity */ |
| for (index = 0; index < ARRAY_SIZE(hex_list) - 1; index++) { |
| if (capacity >= hex_list[index].bytes) |
| break; |
| } |
| hex_divisor = hex_list[index].bytes; |
| hex_units = hex_list[index].units; |
| |
| /* Display the capacity */ |
| sdhc_debug("%3lld.%03lld %sytes (%3lld.%03lld %sytes)%s%s\n", |
| capacity / decimal_divisor, |
| (capacity / (decimal_divisor / 1000)) % 1000, |
| decimal_units, |
| capacity / hex_divisor, |
| ((capacity / (hex_divisor / 1024)) * 1000 / 1024) % 1000, |
| hex_units, |
| separator, |
| name); |
| } |
| |
| void storage_display_setup(struct storage_media *media) |
| { |
| int partition_number; |
| |
| /* Display the device info */ |
| sd_mmc_debug("Man %06x Snr %u ", |
| media->cid[0] >> 24, |
| (((media->cid[2] & 0xffff) << 16) | |
| ((media->cid[3] >> 16) & 0xffff))); |
| sd_mmc_debug("Product %c%c%c%c", media->cid[0] & 0xff, |
| (media->cid[1] >> 24), (media->cid[1] >> 16) & 0xff, |
| (media->cid[1] >> 8) & 0xff); |
| if (!IS_SD(media)) /* eMMC product string is longer */ |
| sd_mmc_debug("%c%c", media->cid[1] & 0xff, |
| (media->cid[2] >> 24) & 0xff); |
| sd_mmc_debug(" Revision %d.%d\n", (media->cid[2] >> 20) & 0xf, |
| (media->cid[2] >> 16) & 0xf); |
| |
| /* Display the erase block size */ |
| sdhc_debug("Erase block size: 0x%08x\n", media->erase_blocks |
| * media->write_bl_len); |
| |
| /* Display the partition capacities */ |
| if (CONFIG(SDHC_DEBUG)) { |
| for (partition_number = 0; partition_number |
| < ARRAY_SIZE(media->capacity); partition_number++) { |
| if (!media->capacity[partition_number]) |
| continue; |
| display_capacity(media, partition_number); |
| } |
| } |
| } |
| |
| int storage_startup(struct storage_media *media) |
| { |
| int err; |
| uint64_t capacity; |
| uint64_t cmult, csize; |
| struct mmc_command cmd; |
| struct sd_mmc_ctrlr *ctrlr = media->ctrlr; |
| |
| /* Determine the storage capacity */ |
| if (media->high_capacity) { |
| cmult = 8; |
| csize = sd_mmc_extract_uint32_bits(media->csd, 58, 22); |
| } else { |
| csize = sd_mmc_extract_uint32_bits(media->csd, 54, 12); |
| cmult = sd_mmc_extract_uint32_bits(media->csd, 78, 3); |
| } |
| capacity = (csize + 1) << (cmult + 2); |
| capacity *= media->read_bl_len; |
| media->capacity[0] = capacity; |
| |
| /* Limit the block size to 512 bytes */ |
| if (media->read_bl_len > 512) |
| media->read_bl_len = 512; |
| if (media->write_bl_len > 512) |
| media->write_bl_len = 512; |
| |
| /* Get the erase size in blocks */ |
| media->erase_blocks = |
| (sd_mmc_extract_uint32_bits(media->csd, 47, 3) + 1) |
| * (sd_mmc_extract_uint32_bits(media->csd, 42, 5) + 1); |
| |
| /* Select the card, and put it into Transfer Mode */ |
| cmd.cmdidx = MMC_CMD_SELECT_CARD; |
| cmd.resp_type = CARD_RSP_R1; |
| cmd.cmdarg = media->rca << 16; |
| cmd.flags = 0; |
| err = ctrlr->send_cmd(ctrlr, &cmd, NULL); |
| if (err) |
| return err; |
| |
| /* Increase the bus frequency */ |
| if (CONFIG(COMMONLIB_STORAGE_SD) && IS_SD(media)) |
| err = sd_change_freq(media); |
| else if (CONFIG(COMMONLIB_STORAGE_MMC)) { |
| err = mmc_change_freq(media); |
| if (!err) |
| mmc_update_capacity(media); |
| } |
| if (err) |
| return err; |
| |
| /* Restrict card's capabilities by what the controller can do */ |
| media->caps &= ctrlr->caps; |
| |
| /* Increase the bus width if possible */ |
| if (CONFIG(COMMONLIB_STORAGE_SD) && IS_SD(media)) |
| err = sd_set_bus_width(media); |
| else if (CONFIG(COMMONLIB_STORAGE_MMC)) |
| err = mmc_set_bus_width(media); |
| if (err) |
| return err; |
| |
| /* Display the card setup */ |
| storage_display_setup(media); |
| return 0; |
| } |
| |
| int storage_setup_media(struct storage_media *media, struct sd_mmc_ctrlr *ctrlr) |
| { |
| int err; |
| |
| memset(media, 0, sizeof(*media)); |
| media->ctrlr = ctrlr; |
| |
| err = sd_mmc_enter_standby(media); |
| if (err) |
| return err; |
| return storage_startup(media); |
| } |
| |
| static int storage_read(struct storage_media *media, void *dest, uint32_t start, |
| uint32_t block_count) |
| { |
| struct mmc_command cmd; |
| struct sd_mmc_ctrlr *ctrlr = media->ctrlr; |
| |
| cmd.resp_type = CARD_RSP_R1; |
| cmd.flags = 0; |
| |
| if (block_count > 1) |
| cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; |
| else |
| cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; |
| |
| if (media->high_capacity) |
| cmd.cmdarg = start; |
| else |
| cmd.cmdarg = start * media->read_bl_len; |
| |
| struct mmc_data data; |
| data.dest = dest; |
| data.blocks = block_count; |
| data.blocksize = media->read_bl_len; |
| data.flags = DATA_FLAG_READ; |
| |
| if (ctrlr->send_cmd(ctrlr, &cmd, &data)) |
| return 0; |
| |
| if ((block_count > 1) && !(ctrlr->caps |
| & DRVR_CAP_AUTO_CMD12)) { |
| cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
| cmd.cmdarg = 0; |
| cmd.resp_type = CARD_RSP_R1b; |
| cmd.flags = CMD_FLAG_IGNORE_INHIBIT; |
| if (ctrlr->send_cmd(ctrlr, &cmd, NULL)) { |
| sd_mmc_error("Failed to send stop cmd\n"); |
| return 0; |
| } |
| |
| /* Waiting for the ready status */ |
| sd_mmc_send_status(media, SD_MMC_IO_RETRIES); |
| } |
| |
| return block_count; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // BlockDevice utilities and callbacks |
| |
| int storage_block_setup(struct storage_media *media, uint64_t start, |
| uint64_t count, int is_read) |
| { |
| struct sd_mmc_ctrlr *ctrlr = media->ctrlr; |
| int partition_number; |
| |
| if (count == 0) |
| return 0; |
| |
| uint32_t bl_len = is_read ? media->read_bl_len : |
| media->write_bl_len; |
| |
| /* Validate the block range */ |
| partition_number = media->partition_config & EXT_CSD_PART_ACCESS_MASK; |
| if (((start * bl_len) > media->capacity[partition_number]) |
| || (((start + count) * bl_len) > |
| media->capacity[partition_number])) { |
| sd_mmc_error("Block range exceeds device capacity\n"); |
| return 0; |
| } |
| |
| /* |
| * CMD16 only applies to single data rate mode, and block |
| * length for double data rate is always 512 bytes. |
| */ |
| if ((ctrlr->timing == BUS_TIMING_UHS_DDR50) || |
| (ctrlr->timing == BUS_TIMING_MMC_DDR52) || |
| (ctrlr->timing == BUS_TIMING_MMC_HS400) || |
| (ctrlr->timing == BUS_TIMING_MMC_HS400ES)) |
| return 1; |
| if (sd_mmc_set_blocklen(ctrlr, bl_len)) |
| return 0; |
| |
| return 1; |
| } |
| |
| uint64_t storage_block_read(struct storage_media *media, uint64_t start, |
| uint64_t count, void *buffer) |
| { |
| uint8_t *dest = (uint8_t *)buffer; |
| |
| if (storage_block_setup(media, start, count, 1) == 0) |
| return 0; |
| |
| uint64_t todo = count; |
| struct sd_mmc_ctrlr *ctrlr = media->ctrlr; |
| do { |
| uint32_t cur = (uint32_t)MIN(todo, ctrlr->b_max); |
| if (storage_read(media, dest, start, cur) != cur) |
| return 0; |
| todo -= cur; |
| sd_mmc_trace("%s: Got %d blocks, more %d (total %d) to go.\n", |
| __func__, (int)cur, (int)todo, (int)count); |
| start += cur; |
| dest += cur * media->read_bl_len; |
| } while (todo > 0); |
| return count; |
| } |
| |
| int storage_set_partition(struct storage_media *media, |
| unsigned int partition_number) |
| { |
| int err; |
| |
| /* Select the partition */ |
| err = -1; |
| if (CONFIG(COMMONLIB_STORAGE_SD) && IS_SD(media)) |
| err = sd_set_partition(media, partition_number); |
| else if (CONFIG(COMMONLIB_STORAGE_MMC)) |
| err = mmc_set_partition(media, partition_number); |
| if (err) |
| sd_mmc_error("Invalid partition number!\n"); |
| return err; |
| } |
| |
| const char *storage_partition_name(struct storage_media *media, |
| unsigned int partition_number) |
| { |
| const char *name; |
| |
| /* Get the partition name */ |
| name = NULL; |
| if (CONFIG(COMMONLIB_STORAGE_SD) && IS_SD(media)) |
| name = sd_partition_name(media, partition_number); |
| else if (CONFIG(COMMONLIB_STORAGE_MMC)) |
| name = mmc_partition_name(media, partition_number); |
| return name; |
| } |
| |
| unsigned int storage_get_current_partition(struct storage_media *media) |
| { |
| return media->partition_config & EXT_CSD_PART_ACCESS_MASK; |
| } |