/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2011 by Amaury Pouly * * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include "system.h" #include "sd.h" #include "mmc.h" #include "sdmmc.h" #include "ssp-imx233.h" #include "pinctrl-imx233.h" #include "partitions-imx233.h" #include "button-target.h" #include "disk.h" #include "usb.h" #include "debug.h" #include "string.h" #include "ata_idle_notify.h" #include "led.h" #include "regs/ssp.h" /** NOTE For convenience, this drivers relies on the many similar commands * between SD and MMC. The following assumptions are made: * - SD_SEND_STATUS = MMC_SEND_STATUS * - SD_SELECT_CARD = MMC_SELECT_CARD * - SD_TRAN = MMC_TRAN * - MMC_WRITE_MULTIPLE_BLOCK = SD_WRITE_MULTIPLE_BLOCK * - MMC_READ_MULTIPLE_BLOCK = SD_READ_MULTIPLE_BLOCK * - SD_STOP_TRANSMISSION = MMC_STOP_TRANSMISSION * - SD_DESELECT_CARD = MMC_DESELECT_CARD */ #if SD_SEND_STATUS != MMC_SEND_STATUS || SD_SELECT_CARD != MMC_SELECT_CARD || \ SD_TRAN != MMC_TRAN || MMC_WRITE_MULTIPLE_BLOCK != SD_WRITE_MULTIPLE_BLOCK || \ MMC_READ_MULTIPLE_BLOCK != SD_READ_MULTIPLE_BLOCK || \ SD_STOP_TRANSMISSION != MMC_STOP_TRANSMISSION || \ SD_DESELECT_CARD != MMC_DESELECT_CARD #error SD/MMC mismatch #endif /* static configuration */ struct sdmmc_config_t { const char *name; /* name(for debug) */ int flags; /* flags */ int power_pin; /* power pin */ int power_delay; /* extra power up delay */ int wp_pin; /* write protect pin */ int ssp; /* associated ssp block */ int mode; /* mode (SD vs MMC) */ }; /* flags */ #define POWER_PIN (1 << 0) #define POWER_INVERTED (1 << 1) #define REMOVABLE (1 << 2) #define DETECT_INVERTED (1 << 3) #define POWER_DELAY (1 << 4) #define WINDOW (1 << 5) #define WP_PIN (1 << 6) #define WP_INVERTED (1 << 7) #define PROBE (1 << 8) /* modes */ #define SD_MODE 0 #define MMC_MODE 1 #define PIN(bank,pin) ((bank) << 5 | (pin)) #define PIN2BANK(v) ((v) >> 5) #define PIN2PIN(v) ((v) & 0x1f) const struct sdmmc_config_t sdmmc_config[] = { #ifdef SANSA_FUZEPLUS /* The Fuze+ uses pin #B0P8 for power */ { .name = "microSD", .flags = POWER_PIN | POWER_INVERTED | REMOVABLE, .power_pin = PIN(0, 8), .ssp = 1, .mode = SD_MODE, }, /* The Fuze+ uses pin #B1P29 for power */ { .name = "eMMC", .flags = POWER_PIN | POWER_INVERTED | WINDOW | POWER_DELAY, .power_pin = PIN(1, 29), .power_delay = HZ / 5, /* extra delay, to ramp up voltage? */ .ssp = 2, .mode = MMC_MODE, }, #elif defined(CREATIVE_ZENXFI2) { .name = "internal/SD", .flags = WINDOW | PROBE, .ssp = 2, .mode = SD_MODE, }, /* The Zen X-Fi2 uses pin B1P29 for power */ { .name = "microSD", .flags = POWER_PIN | REMOVABLE | DETECT_INVERTED, .power_pin = PIN(1, 29), .ssp = 1, .mode = SD_MODE, }, #elif defined(CREATIVE_ZENXFI3) { .name = "internal/SD", .flags = WINDOW, .ssp = 2, .mode = SD_MODE, }, /* The Zen X-Fi3 uses pin #B0P07 for power */ { .name = "microSD", .flags = POWER_PIN | POWER_INVERTED | REMOVABLE | POWER_DELAY, .power_pin = PIN(0, 7), .power_delay = HZ / 10, /* extra delay, to ramp up voltage? */ .ssp = 1, .mode = SD_MODE, }, #elif defined(CREATIVE_ZENXFI) || defined(CREATIVE_ZEN) { .name = "internal/SD", .flags = WINDOW, .ssp = 2, .mode = SD_MODE, }, /* The Zen X-Fi uses pin #B0P10 for power*/ { .name = "SD", .flags = POWER_PIN | REMOVABLE | DETECT_INVERTED | POWER_DELAY | WP_PIN, .power_pin = PIN(0, 10), .wp_pin = PIN(0, 11), .power_delay = HZ / 10, /* extra delay, to ramp up voltage? */ .ssp = 1, .mode = SD_MODE, }, #elif defined(CREATIVE_ZENMOZAIC) { .name = "internal/SD", .flags = WINDOW, .ssp = 2, .mode = SD_MODE, } #elif defined(CREATIVE_ZENXFISTYLE) { .name = "internal/SD", .flags = WINDOW, .ssp = 2, .mode = SD_MODE }, #elif defined(SONY_NWZE370) || defined(SONY_NWZE360) /* The Sony NWZ-E370 uses #B1P29 for power */ { .name = "internal/SD", .flags = POWER_PIN | POWER_INVERTED | WINDOW, .power_pin = PIN(1, 29), .ssp = 2, .mode = MMC_MODE }, #else #error You need to write the sd/mmc config! #endif }; /* drive status */ struct sdmmc_status_t { int bus_width; /* bus width (1, 4 or 8) */ bool hs_capable; /* HS capable device */ bool hs_enabled; /* HS enabled */ bool has_sbc; /* support SET_BLOCK_COUNT */ }; #define SDMMC_NUM_DRIVES (sizeof(sdmmc_config) / sizeof(sdmmc_config[0])) #define SDMMC_CONF(drive) sdmmc_config[drive] #define SDMMC_FLAGS(drive) SDMMC_CONF(drive).flags #define SDMMC_SSP(drive) SDMMC_CONF(drive).ssp #define SDMMC_MODE(drive) SDMMC_CONF(drive).mode /** WARNING * to be consistent with all our SD drivers, the .rca field of sdmmc_card_info * in reality holds (rca << 16) because all command arguments actually require * the RCA is the 16-bit msb. Be careful that this is not the actuall RCA ! */ /* common */ static sector_t window_start[SDMMC_NUM_DRIVES]; static sector_t window_end[SDMMC_NUM_DRIVES]; static uint8_t aligned_buffer[SDMMC_NUM_DRIVES][512] CACHEALIGN_ATTR; static tCardInfo sdmmc_card_info[SDMMC_NUM_DRIVES]; static struct mutex mutex[SDMMC_NUM_DRIVES]; static int disk_last_activity[SDMMC_NUM_DRIVES]; static struct sdmmc_status_t sdmmc_status[SDMMC_NUM_DRIVES]; #define MIN_YIELD_PERIOD 5 #define SDMMC_INFO(drive) sdmmc_card_info[drive] #define SDMMC_RCA(drive) SDMMC_INFO(drive).rca #define SDMMC_STATUS(drive) sdmmc_status[drive] /* sd only */ #if CONFIG_STORAGE & STORAGE_SD static int sd_first_drive; static unsigned _sd_num_drives; static int sd_map[SDMMC_NUM_DRIVES]; /* sd->sdmmc map */ #endif /* mmc only */ #if CONFIG_STORAGE & STORAGE_MMC static int mmc_first_drive; static unsigned _mmc_num_drives; static int mmc_map[SDMMC_NUM_DRIVES]; /* mmc->sdmmc map */ #endif static int init_drive(int drive); /* WARNING NOTE BUG FIXME * There are three numbering schemes involved in the driver: * - the sdmmc indexes into sdmmc_config[] * - the sd drive indexes * - the mmc drive indexes * By convention, [drive] refers to a sdmmc index whereas sd_drive/mmc_drive * refer to sd/mmc drive indexes. We keep two maps sd->sdmmc and mmc->sdmmc * to find the sdmmc index from the sd or mmc one */ static inline int sdmmc_removable(int drive) { return SDMMC_FLAGS(drive) & REMOVABLE; } static int sdmmc_present(int drive) { if(sdmmc_removable(drive)) return imx233_ssp_sdmmc_detect(SDMMC_SSP(drive)); else return true; } static void sdmmc_detect_callback(int ssp) { /* This is called only if the state was stable for 300ms - check state * and post appropriate event. */ long evid = imx233_ssp_sdmmc_detect(ssp) ? SYS_HOTSWAP_INSERTED : SYS_HOTSWAP_EXTRACTED; /* Have to reverse lookup the ssp */ for (unsigned drive = 0; drive < SDMMC_NUM_DRIVES; drive++) { if (SDMMC_SSP(drive) != ssp) continue; int first_drive, *map; switch (SDMMC_MODE(drive)) { #if (CONFIG_STORAGE & STORAGE_MMC) case MMC_MODE: first_drive = mmc_first_drive; map = mmc_map; break; #endif #if (CONFIG_STORAGE & STORAGE_SD) case SD_MODE: first_drive = sd_first_drive; map = sd_map; break; #endif default: continue; } /* message requires logical drive number as data */ queue_broadcast(evid, first_drive + map[drive]); } imx233_ssp_sdmmc_setup_detect(ssp, true, sdmmc_detect_callback, false, imx233_ssp_sdmmc_is_detect_inverted(ssp)); } static void sdmmc_enable_pullups(int drive, bool pullup) { /* setup pins, never use alternatives pin on SSP1 because no device use it * but this could be made a flag */ int bus_width = SDMMC_MODE(drive) == MMC_MODE ? 8 : 4; if(SDMMC_SSP(drive) == 1) imx233_ssp_setup_ssp1_sd_mmc_pins(pullup, bus_width, false); else imx233_ssp_setup_ssp2_sd_mmc_pins(pullup, bus_width); } static void sdmmc_power(int drive, bool on) { /* power chip if needed */ if(SDMMC_FLAGS(drive) & POWER_PIN) { int bank = PIN2BANK(SDMMC_CONF(drive).power_pin); int pin = PIN2PIN(SDMMC_CONF(drive).power_pin); imx233_pinctrl_acquire(bank, pin, "sdmmc_power"); imx233_pinctrl_set_function(bank, pin, PINCTRL_FUNCTION_GPIO); imx233_pinctrl_enable_gpio(bank, pin, true); if(SDMMC_FLAGS(drive) & POWER_INVERTED) imx233_pinctrl_set_gpio(bank, pin, !on); else imx233_pinctrl_set_gpio(bank, pin, on); } if(SDMMC_FLAGS(drive) & POWER_DELAY) sleep(SDMMC_CONF(drive).power_delay); /* enable pullups for identification */ sdmmc_enable_pullups(drive, true); } #define MCI_NO_RESP 0 #define MCI_RESP (1<<0) #define MCI_LONG_RESP (1<<1) #define MCI_ACMD (1<<2) /* sd only */ #define MCI_NOCRC (1<<3) #define MCI_BUSY (1<<4) static bool send_cmd(int drive, uint8_t cmd, uint32_t arg, uint32_t flags, uint32_t *resp) { if((flags & MCI_ACMD) && !send_cmd(drive, SD_APP_CMD, SDMMC_RCA(drive), MCI_RESP, resp)) return false; enum imx233_ssp_resp_t resp_type = (flags & MCI_LONG_RESP) ? SSP_LONG_RESP : (flags & MCI_RESP) ? SSP_SHORT_RESP : SSP_NO_RESP; enum imx233_ssp_error_t ret = imx233_ssp_sd_mmc_transfer(SDMMC_SSP(drive), cmd, arg, resp_type, NULL, 0, !!(flags & MCI_BUSY), false, resp); if(resp_type == SSP_LONG_RESP) { /* Our SD codes assume most significant word first, so reverse resp */ uint32_t tmp = resp[0]; resp[0] = resp[3]; resp[3] = tmp; tmp = resp[1]; resp[1] = resp[2]; resp[2] = tmp; } return ret == SSP_SUCCESS; } static int wait_for_state(int drive, unsigned state) { uint32_t response; unsigned int timeout = current_tick + 5*HZ; int cmd_retry = 10; int next_yield = current_tick + MIN_YIELD_PERIOD; while (1) { /* NOTE: rely on SD_SEND_STATUS=MMC_SEND_STATUS */ while(!send_cmd(drive, SD_SEND_STATUS, SDMMC_RCA(drive), MCI_RESP, &response) && cmd_retry > 0) cmd_retry--; if(cmd_retry <= 0) return -1; if(((response >> 9) & 0xf) == state) return 0; if(TIME_AFTER(current_tick, timeout)) return -10 * ((response >> 9) & 0xf); if(TIME_AFTER(current_tick, next_yield)) { yield(); next_yield = current_tick + MIN_YIELD_PERIOD; } } return 0; } #if CONFIG_STORAGE & STORAGE_SD static int init_sd_card(int drive) { int ssp = SDMMC_SSP(drive); sdmmc_power(drive, false); sdmmc_power(drive, true); imx233_ssp_start(ssp); imx233_ssp_softreset(ssp); imx233_ssp_set_mode(ssp, BV_SSP_CTRL1_SSP_MODE__SD_MMC); /* SSPCLK @ 96MHz * gives bitrate of 96000 / 240 / 1 = 400kHz */ imx233_ssp_set_timings(ssp, 240, 0, 0xffff); imx233_ssp_sd_mmc_power_up_sequence(ssp); imx233_ssp_set_bus_width(ssp, 1); imx233_ssp_set_block_size(ssp, 9); SDMMC_RCA(drive) = 0; bool sd_v2 = false, sd_hs = false; uint32_t resp; long init_timeout; /* go to idle state */ if(!send_cmd(drive, SD_GO_IDLE_STATE, 0, MCI_NO_RESP, NULL)) return -1; /* CMD8 Check for v2 sd card. Must be sent before using ACMD41 Non v2 cards will not respond to this command */ if(send_cmd(drive, SD_SEND_IF_COND, 0x1AA, MCI_RESP, &resp)) if((resp & 0xFFF) == 0x1AA) sd_v2 = true; /* timeout for initialization is 1sec, from SD Specification 2.00 */ init_timeout = current_tick + HZ; do { /* this timeout is the only valid error for this loop*/ if(TIME_AFTER(current_tick, init_timeout)) return -2; /* ACMD41 For v2 cards set HCS bit[30] & send host voltage range to all */ if(!send_cmd(drive, SD_APP_OP_COND, (0x00FF8000 | (sd_v2 ? 1<<30 : 0)), MCI_ACMD|MCI_NOCRC|MCI_RESP, (uint32_t*)&SDMMC_INFO(drive).ocr)) return -100; } while(!(SDMMC_INFO(drive).ocr & (1<<31))); /* CMD2 send CID */ if(!send_cmd(drive, SD_ALL_SEND_CID, 0, MCI_RESP|MCI_LONG_RESP, (uint32_t*)SDMMC_INFO(drive).cid)) return -3; /* CMD3 send RCA */ if(!send_cmd(drive, SD_SEND_RELATIVE_ADDR, 0, MCI_RESP, (uint32_t*)&SDMMC_INFO(drive).rca)) return -4; /* CMD9 send CSD */ if(!send_cmd(drive, SD_SEND_CSD, SDMMC_RCA(drive), MCI_RESP|MCI_LONG_RESP, (uint32_t*)SDMMC_INFO(drive).csd)) return -9; sd_parse_csd(&SDMMC_INFO(drive)); window_start[drive] = 0; window_end[drive] = SDMMC_INFO(drive).numblocks; /* CMD7 w/rca: Select card to put it in TRAN state */ if(!send_cmd(drive, SD_SELECT_CARD, SDMMC_RCA(drive), MCI_RESP, &resp)) return -12; if(wait_for_state(drive, SD_TRAN)) return -13; /* ACMD6: set bus width to 4-bit */ if(!send_cmd(drive, SD_SET_BUS_WIDTH, 2, MCI_RESP|MCI_ACMD, &resp)) return -15; /* ACMD42: disconnect the pull-up resistor on CD/DAT3 */ if(!send_cmd(drive, SD_SET_CLR_CARD_DETECT, 0, MCI_RESP|MCI_ACMD, &resp)) return -17; /* Switch to 4-bit */ imx233_ssp_set_bus_width(ssp, 4); SDMMC_STATUS(drive).bus_width = 4; /* Try to switch V2 cards to HS timings, non HS seem to ignore this */ if(sd_v2) { /* only transfer 64 bytes */ imx233_ssp_set_block_size(ssp, /*log2(64)*/6); /* CMD6 switch to HS */ if(imx233_ssp_sd_mmc_transfer(ssp, SD_SWITCH_FUNC, 0x80fffff1, SSP_SHORT_RESP, aligned_buffer[drive], 1, true, true, NULL)) return -12; imx233_ssp_set_block_size(ssp, /*log2(512)*/9); if((aligned_buffer[drive][16] & 0xf) == 1) sd_hs = true; } /* probe for CMD23 support */ SDMMC_STATUS(drive).has_sbc = false; /* ACMD51, only transfer 8 bytes */ imx233_ssp_set_block_size(ssp, /*log2(8)*/3); if(send_cmd(drive, SD_APP_CMD, SDMMC_RCA(drive), MCI_RESP, &resp)) { if(imx233_ssp_sd_mmc_transfer(ssp, SD_SEND_SCR, 0, SSP_SHORT_RESP, aligned_buffer[drive], 1, true, true, NULL) == SSP_SUCCESS) { if(aligned_buffer[drive][3] & 2) SDMMC_STATUS(drive).has_sbc = true; } } imx233_ssp_set_block_size(ssp, /*log2(512)*/9); /* SSPCLK @ 96MHz * gives bitrate of 96 / 4 / 1 = 24MHz * gives bitrate of 96 / 2 / 1 = 48MHz */ SDMMC_STATUS(drive).hs_capable = sd_hs; SDMMC_STATUS(drive).hs_enabled = false; if(/*sd_hs*/false) imx233_ssp_set_timings(ssp, 2, 0, 0xffff); else imx233_ssp_set_timings(ssp, 4, 0, 0xffff); /* deselect card */ if(!send_cmd(drive, SD_DESELECT_CARD, 0, MCI_NO_RESP, NULL)) return -13; /* successfully initialised */ SDMMC_INFO(drive).initialized = 1; return 0; } int sd_event(long id, intptr_t data) { int rc = 0; switch (id) { #ifdef HAVE_HOTSWAP case SYS_HOTSWAP_INSERTED: case SYS_HOTSWAP_EXTRACTED:; const int drive = sd_map[data]; /* Skip non-removable drivers */ if(!sdmmc_removable(drive)) { rc = -1; break; } mutex_lock(&mutex[drive]); /* lock-out card activity */ /* Force card init for new card, re-init for re-inserted one or * clear if the last attempt to init failed with an error. */ SDMMC_INFO(drive).initialized = 0; if(id == SYS_HOTSWAP_INSERTED) rc = init_drive(drive); /* unlock card */ mutex_unlock(&mutex[drive]); /* Access is now safe */ break; #endif /* HAVE_HOTSWAP */ default: rc = storage_event_default_handler(id, data, sd_last_disk_activity(), STORAGE_SD); break; } return rc; } #endif /* CONFIG_STORAGE & STORAGE_SD */ #if CONFIG_STORAGE & STORAGE_MMC static int init_mmc_drive(int drive) { int ssp = SDMMC_SSP(drive); /* we can choose the RCA of mmc cards: pick drive. Following our convention, * .rca is actually RCA << 16 */ SDMMC_RCA(drive) = drive << 16; sdmmc_power(drive, false); sdmmc_power(drive, true); imx233_ssp_start(ssp); imx233_ssp_softreset(ssp); imx233_ssp_set_mode(ssp, BV_SSP_CTRL1_SSP_MODE__SD_MMC); /* SSPCLK @ 96MHz * gives bitrate of 96000 / 240 / 1 = 400kHz */ imx233_ssp_set_timings(ssp, 240, 0, 0xffff); imx233_ssp_sd_mmc_power_up_sequence(ssp); imx233_ssp_set_bus_width(ssp, 1); imx233_ssp_set_block_size(ssp, 9); /* go to idle state */ if(!send_cmd(drive, MMC_GO_IDLE_STATE, 0, MCI_NO_RESP, NULL)) return -1; /* send op cond until the card respond with busy bit set; it must complete within 1sec */ unsigned timeout = current_tick + HZ; bool ret = false; do { uint32_t ocr; ret = send_cmd(drive, MMC_SEND_OP_COND, 0x40ff8000, MCI_RESP, &ocr); if(ret && ocr & (1 << 31)) break; }while(!TIME_AFTER(current_tick, timeout)); if(!ret) return -2; /* get CID */ uint32_t cid[4]; if(!send_cmd(drive, MMC_ALL_SEND_CID, 0, MCI_LONG_RESP, cid)) return -3; /* Set RCA */ uint32_t status; if(!send_cmd(drive, MMC_SET_RELATIVE_ADDR, SDMMC_RCA(drive), MCI_RESP, &status)) return -4; /* Select card */ if(!send_cmd(drive, MMC_SELECT_CARD, SDMMC_RCA(drive), MCI_RESP, &status)) return -5; /* Check TRAN state */ if(wait_for_state(drive, MMC_TRAN)) return -6; /* Switch to 8-bit bus */ if(!send_cmd(drive, MMC_SWITCH, 0x3b70200, MCI_RESP|MCI_BUSY, &status)) return -8; /* switch error ? */ if(status & 0x80) return -9; imx233_ssp_set_bus_width(ssp, 8); /* Switch to high speed mode */ if(!send_cmd(drive, MMC_SWITCH, 0x3b90100, MCI_RESP|MCI_BUSY, &status)) return -10; /* switch error ?*/ if(status & 0x80) return -11; /* SSPCLK @ 96MHz * gives bitrate of 96 / 2 / 1 = 48MHz */ imx233_ssp_set_timings(ssp, 2, 0, 0xffff); SDMMC_STATUS(drive).bus_width = 8; SDMMC_STATUS(drive).hs_capable = true; SDMMC_STATUS(drive).hs_enabled = true; /* read extended CSD */ { uint8_t *ext_csd = aligned_buffer[drive]; if(imx233_ssp_sd_mmc_transfer(ssp, 8, 0, SSP_SHORT_RESP, aligned_buffer[drive], 1, true, true, &status)) return -12; uint32_t *sec_count = (void *)&ext_csd[212]; window_start[drive] = 0; window_end[drive] = *sec_count; } /* deselect card */ if(!send_cmd(drive, MMC_DESELECT_CARD, 0, MCI_NO_RESP, NULL)) return -13; /* MMC always support CMD23 */ SDMMC_STATUS(drive).has_sbc = true; SDMMC_INFO(drive).initialized = 1; return 0; } int mmc_event(long id, intptr_t data) { return storage_event_default_handler(id, data, mmc_last_disk_activity(), STORAGE_MMC); } #endif /* CONFIG_STORAGE & STORAGE_MMC */ /* low-level function, don't call directly! */ static int __xfer_sectors(int drive, sector_t start, int count, void *buf, bool read) { uint32_t resp; int ret = 0; while(count != 0) { int this_count = MIN(count, IMX233_MAX_SINGLE_DMA_XFER_SIZE / 512); bool need_stop = true; if(SDMMC_STATUS(drive).has_sbc && send_cmd(drive, 23, this_count, MCI_RESP, &resp)) need_stop = false; /* Set bank_start to the correct unit (blocks or bytes). * MMC drives use block addressing, SD cards bytes or blocks */ sector_t bank_start = start; if(SDMMC_MODE(drive) == SD_MODE && !(SDMMC_INFO(drive).ocr & (1<<30))) /* not SDHC */ bank_start *= SD_BLOCK_SIZE; /* issue read/write * NOTE: rely on SD_{READ,WRITE}_MULTIPLE_BLOCK=MMC_{READ,WRITE}_MULTIPLE_BLOCK */ ret = imx233_ssp_sd_mmc_transfer(SDMMC_SSP(drive), read ? SD_READ_MULTIPLE_BLOCK : SD_WRITE_MULTIPLE_BLOCK, bank_start, SSP_SHORT_RESP, buf, this_count, false, read, &resp); if(ret != SSP_SUCCESS) need_stop = true; /* stop transmission * NOTE: rely on SD_STOP_TRANSMISSION=MMC_STOP_TRANSMISSION */ if(need_stop && !send_cmd(drive, SD_STOP_TRANSMISSION, 0, MCI_RESP|MCI_BUSY, &resp)) { ret = -15; break; } if(ret != 0) return ret; count -= this_count; start += this_count; buf += this_count * 512; } return ret; } static int transfer_sectors(int drive, sector_t start, int count, void *buf, bool read) { int ret = 0; /* the function doesn't work when count is 0 */ if(count == 0) return ret; /* update disk activity */ disk_last_activity[drive] = current_tick; /* lock per-drive mutex */ mutex_lock(&mutex[drive]); /* update led status */ led(true); /* for SD cards, init if necessary */ #if CONFIG_STORAGE & STORAGE_SD if(SDMMC_MODE(drive) == SD_MODE && SDMMC_INFO(drive).initialized <= 0) { ret = init_drive(drive); if(SDMMC_INFO(drive).initialized <= 0) goto Lend; } #endif /* check window */ start += window_start[drive]; if((start + count) > window_end[drive]) { ret = -201; goto Lend; } /* select card. * NOTE: rely on SD_SELECT_CARD=MMC_SELECT_CARD */ if(!send_cmd(drive, SD_SELECT_CARD, SDMMC_RCA(drive), MCI_NO_RESP, NULL)) { ret = -20; goto Lend; } /* wait for TRAN state */ /* NOTE: rely on SD_TRAN=MMC_TRAN */ ret = wait_for_state(drive, SD_TRAN); if(ret < 0) goto Ldeselect; /** * NOTE: we need to make sure dma transfers are aligned. This is handled * differently for read and write transfers. We do not repeat it each * time but it should be noted that all transfers are limited by * IMX233_MAX_SINGLE_DMA_XFER_SIZE and thus need to be split if needed. * * Read transfers: * If the buffer is already aligned, transfer everything at once. * Otherwise, transfer all sectors but one to the sub-buffer starting * on the next cache line and then move the data. Then transfer the * last sector to the aligned_buffer and then copy to the buffer. * * Write transfers: * If the buffer is already aligned, transfer everything at once. * Otherwise, copy the first sector to the aligned_buffer and transfer. * Then move all other sectors within the buffer to make it cache * aligned and transfer it. Then move data to pretend the buffer was * never modified. */ if(read) { void *ptr = CACHEALIGN_UP(buf); if(buf != ptr) { /* copy count-1 sector and then move within the buffer */ ret = __xfer_sectors(drive, start, count - 1, ptr, read); memmove(buf, ptr, 512 * (count - 1)); if(ret >= 0) { /* transfer the last sector the aligned_buffer and copy */ ret = __xfer_sectors(drive, start + count - 1, 1, aligned_buffer[drive], read); memcpy(buf + 512 * (count - 1), aligned_buffer[drive], 512); } } else ret = __xfer_sectors(drive, start, count, buf, read); } else { void *ptr = CACHEALIGN_UP(buf); if(buf != ptr) { /* transfer the first sector to aligned_buffer and copy */ memcpy(aligned_buffer[drive], buf, 512); ret = __xfer_sectors(drive, start, 1, aligned_buffer[drive], read); if(ret >= 0) { /* move within the buffer and transfer */ memmove(ptr, buf + 512, 512 * (count - 1)); ret = __xfer_sectors(drive, start + 1, count - 1, ptr, read); /* move back */ memmove(buf + 512, ptr, 512 * (count - 1)); memcpy(buf, aligned_buffer[drive], 512); } } else ret = __xfer_sectors(drive, start, count, buf, read); } /* deselect card */ Ldeselect: /* CMD7 w/rca =0 : deselects card & puts it in STBY state * NOTE: rely on SD_DESELECT_CARD=MMC_DESELECT_CARD */ if(!send_cmd(drive, SD_DESELECT_CARD, 0, MCI_NO_RESP, NULL)) ret = -23; Lend: /* update led status */ led(false); /* release per-drive mutex */ mutex_unlock(&mutex[drive]); return ret; } /* user specifies the sdmmc drive */ static int part_read_fn(intptr_t user, sector_t start, int count, void* buf) { return transfer_sectors(user, start, count, buf, true); } static int init_drive(int drive) { int ret; switch(SDMMC_MODE(drive)) { #if CONFIG_STORAGE & STORAGE_SD case SD_MODE: ret = init_sd_card(drive); break; #endif #if CONFIG_STORAGE & STORAGE_MMC case MMC_MODE: ret = init_mmc_drive(drive); break; #endif default: ret = 0; } if(ret < 0) return ret; /* compute window */ if((SDMMC_FLAGS(drive) & WINDOW) && imx233_partitions_is_window_enabled()) { /* NOTE: at this point the window shows the whole disk so raw disk * accesses can be made to lookup partitions */ ret = imx233_partitions_compute_window(IF_MD_DRV(drive), part_read_fn, IMX233_PART_USER, &window_start[drive], &window_end[drive]); if(ret) panicf("cannot compute partitions window: %d", ret); SDMMC_INFO(drive).numblocks = window_end[drive] - window_start[drive]; } return 0; } static int sdmmc_init(void) { static int is_initialized = false; if(is_initialized) return 0; is_initialized = true; for(unsigned drive = 0; drive < SDMMC_NUM_DRIVES; drive++) mutex_init(&mutex[drive]); for(unsigned drive = 0; drive < SDMMC_NUM_DRIVES; drive++) { if(sdmmc_removable(drive)) imx233_ssp_sdmmc_setup_detect(SDMMC_SSP(drive), true, sdmmc_detect_callback, false, SDMMC_FLAGS(drive) & DETECT_INVERTED); } return 0; } #if CONFIG_STORAGE & STORAGE_SD int sd_init(void) { int ret = sdmmc_init(); if(ret < 0) return ret; _sd_num_drives = 0; for(unsigned drive = 0; drive < SDMMC_NUM_DRIVES; drive++) if(SDMMC_MODE(drive) == SD_MODE) { /* if asked to probe, try to init it and ignore it if it fails */ if(SDMMC_FLAGS(drive) & PROBE) { int ret = init_drive(drive); if(ret < 0) continue; } sd_map[_sd_num_drives++] = drive; } return 0; } tCardInfo *card_get_info_target(int sd_card_no) { return &SDMMC_INFO(sd_map[sd_card_no]); } int sd_num_drives(int first_drive) { sd_first_drive = first_drive; return _sd_num_drives; } bool sd_present(IF_MD_NONVOID(int sd_drive)) { return sdmmc_present(sd_map[IF_MD_DRV(sd_drive)]); } bool sd_removable(IF_MD_NONVOID(int sd_drive)) { return sdmmc_removable(sd_map[IF_MD_DRV(sd_drive)]); } long sd_last_disk_activity(void) { long last = 0; for(unsigned i = 0; i < _sd_num_drives; i++) last = MAX(last, disk_last_activity[sd_map[i]]); return last; } void sd_enable(bool on) { (void) on; } int sd_read_sectors(IF_MD(int sd_drive,) sector_t start, int count, void *buf) { #ifndef HAVE_MULTIDRIVE int sd_drive = 0; #endif return transfer_sectors(sd_map[sd_drive], start, count, buf, true); } int sd_write_sectors(IF_MD(int sd_drive,) sector_t start, int count, const void* buf) { #ifndef HAVE_MULTIDRIVE int sd_drive = 0; #endif return transfer_sectors(sd_map[sd_drive], start, count, (void *)buf, false); } #endif #if CONFIG_STORAGE & STORAGE_MMC int mmc_init(void) { int ret = sdmmc_init(); if(ret < 0) return ret; _mmc_num_drives = 0; for(unsigned drive = 0; drive < SDMMC_NUM_DRIVES; drive++) if(SDMMC_MODE(drive) == MMC_MODE) { /* try to init drive, panic on failure or skip if probing */ int ret = init_drive(drive); if(ret < 0) { if(SDMMC_FLAGS(drive) & PROBE) continue; else panicf("init_drive(%d) failed: %d (mmc)", drive, ret); } mmc_map[_mmc_num_drives++] = drive; } return 0; } void mmc_get_info(IF_MD(int mmc_drive,) struct storage_info *info) { #ifndef HAVE_MULTIDRIVE int mmc_drive = 0; #endif int drive = mmc_map[mmc_drive]; info->sector_size = 512; info->num_sectors = window_end[drive] - window_start[drive]; info->vendor = "Rockbox"; info->product = "Internal Storage"; info->revision = "0.00"; } int mmc_num_drives(int first_drive) { mmc_first_drive = first_drive; return _mmc_num_drives; } bool mmc_present(IF_MD_NONVOID(int mmc_drive)) { return sdmmc_present(mmc_map[IF_MD_DRV(mmc_drive)]); } bool mmc_removable(IF_MD_NONVOID(int mmc_drive)) { return sdmmc_removable(mmc_map[IF_MD_DRV(mmc_drive)]); } long mmc_last_disk_activity(void) { long last = 0; for(unsigned i = 0; i < _mmc_num_drives; i++) last = MAX(last, disk_last_activity[mmc_map[i]]); return last; } void mmc_enable(bool on) { (void) on; } void mmc_sleepnow(void) { } bool mmc_disk_is_active(void) { return false; } bool mmc_usb_active(int delayticks) { (void) delayticks; return mmc_disk_is_active(); } int mmc_soft_reset(void) { return 0; } int mmc_flush(void) { return 0; } void mmc_spin(void) { } void mmc_spindown(int seconds) { (void) seconds; } int mmc_spinup_time(void) { return 0; } int mmc_read_sectors(IF_MD(int mmc_drive,) sector_t start, int count, void *buf) { #ifndef HAVE_MULTIDRIVE int mmc_drive = 0; #endif return transfer_sectors(mmc_map[mmc_drive], start, count, buf, true); } int mmc_write_sectors(IF_MD(int mmc_drive,) sector_t start, int count, const void* buf) { #ifndef HAVE_MULTIDRIVE int mmc_drive = 0; #endif return transfer_sectors(mmc_map[mmc_drive], start, count, (void *)buf, false); } tCardInfo *mmc_card_info(int card_no) { return &SDMMC_INFO(mmc_map[card_no]); } #endif /** Information about SD/MMC slot */ struct sdmmc_info_t { int drive; /* drive number (for queries like storage_removable(drive) */ const char *slot_name; /* name of the slot: 'internal' or 'microsd' */ bool window; /* is window enabled for this slot? */ int bus_width; /* current bus width */ bool hs_capable; /* is device high-speed capable? */ bool hs_enabled; /* is high-speed enabled? */ bool has_sbc; /* device support SET_BLOCK_COUNT */ }; struct sdmmc_info_t imx233_sdmmc_get_info(int drive, int storage_drive) { struct sdmmc_info_t info; memset(&info, 0, sizeof(info)); info.drive = storage_drive; info.slot_name = SDMMC_CONF(drive).name; info.window = !!(SDMMC_CONF(drive).flags & WINDOW); info.bus_width = SDMMC_STATUS(drive).bus_width; info.hs_capable = SDMMC_STATUS(drive).hs_capable; info.hs_enabled = SDMMC_STATUS(drive).hs_enabled; info.has_sbc = SDMMC_STATUS(drive).has_sbc; return info; } #if CONFIG_STORAGE & STORAGE_SD /* return information about a particular sd device (use regular drive number) */ struct sdmmc_info_t imx233_sd_get_info(int card_no) { return imx233_sdmmc_get_info(sd_map[card_no], sd_first_drive + card_no); } #endif #if CONFIG_STORAGE & STORAGE_MMC /* return information about a particular mmc device (use regular drive number) */ struct sdmmc_info_t imx233_mmc_get_info(int card_no) { return imx233_sdmmc_get_info(mmc_map[card_no], mmc_first_drive + card_no); } #endif