path: root/bsp/allwinner/libraries/sunxi-hal/hal/source/sdmmc/core.c

/*
 * Copyright (C) 2017 ALLWINNERTECH TECHNOLOGY CO., LTD. All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *    1. Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the
 *       distribution.
 *    3. Neither the name of ALLWINNERTECH TECHNOLOGY CO., LTD. nor the names of
 *       its contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stddef.h>
#include <stdint.h>

#include "hal_sdhost.h"
#include "sdmmc.h"
#ifdef CONFIG_USE_SDIO
#include "sdio.h"
#endif

#include "hal/hal_base.h"

#include "_sd_define.h"

#include "_sdhost.h"
#include "_core.h"
#ifdef CONFIG_USE_SDIO
#include "_sdio.h"
#endif
#ifdef CONFIG_USE_SD
#include "_sd.h"
#endif
#ifdef CONFIG_USE_MMC
#include "_mmc.h"
#endif

hal_spinlock_t sdmmc_lock;

/**
 *  mmc_wait_for_req - start a request and wait for completion
 *  @host: MMC host to start command
 *  @mrq: MMC request to start
 *
 *  Start a new MMC custom command request for a host, and wait
 *  for the command to complete. Does not attempt to parse the
 *  response.
 */
int32_t mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
{
    mrq->cmd->data = mrq->data;
    return HAL_SDC_Request(host, mrq);
}

/**
 *  mmc_wait_for_cmd - start a command and wait for completion
 *  @host: MMC host to start command
 *  @cmd: MMC command to start
 *  @retries: maximum number of retries
 *
 *  Start a new MMC command for a host, and wait for the command
 *  to complete.  Return any error that occurred while the command
 *  was executing.  Do not attempt to parse the response.
 */
int32_t mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd)
{
    struct mmc_request mrq = {0};

    SDC_Memset(cmd->resp, 0, sizeof(cmd->resp));

    mrq.cmd = cmd;

    return mmc_wait_for_req(host, &mrq);
}

/**
 *  mmc_align_data_size - pads a transfer size to a more optimal value
 *  @card: the MMC card associated with the data transfer
 *  @sz: original transfer size
 *
 *  Pads the original data size with a number of extra bytes in
 *  order to avoid controller bugs and/or performance hits
 *  (e.g. some controllers revert to PIO for certain sizes).
 *
 *  Returns the improved size, which might be unmodified.
 *
 *  Note that this function is only relevant when issuing a
 *  single scatter gather entry.
 */
int32_t mmc_align_data_size(struct mmc_card *card, uint32_t sz)
{
    /*
     * FIXME: We don't have a system for the controller to tell
     * the core about its problems yet, so for now we just 32-bit
     * align the size.
     */
    sz = ((sz + 3) / 4) * 4;

    return sz;
}

static inline void mmc_host_clk_hold(struct mmc_host *host)
{
    HAL_SDC_Clk_PWR_Opt(host, 1, 0);
}

static inline void mmc_host_clk_release(struct mmc_host *host)
{
    HAL_SDC_Clk_PWR_Opt(host, 0, 0);
}

/*
 * Apply power to the MMC stack.  This is a two-stage process.
 * First, we enable power to the card without the clock running.
 * We then wait a bit for the power to stabilise.  Finally,
 * enable the bus drivers and clock to the card.
 *
 * We must _NOT_ enable the clock prior to power stablising.
 *
 * If a host does all the power sequencing itself, ignore the
 * initial MMC_POWER_UP stage.
 */
static void mmc_power_up(struct mmc_host *host)
{
    //int bit;

    mmc_host_clk_hold(host);

    /* If ocr is set, we use it */
    //if (host->ocr)
    //  bit = ffs(host->ocr) - 1;
    //else
    //  bit = fls(host->ocr_avail) - 1;

    /*This delay should be sufficient to allow the power supply
    *to reach the minimum voltage
    * according to figure 6-5 of sd3.0 spec,about 40 ms
    */
    mmc_mdelay(40);

    /*
     * This delay must be at least 74 clock sizes, or 1 ms, or the
     * time required to reach a stable voltage.
     */
    mmc_mdelay(5);
    HAL_SDC_PowerOn(host);

    mmc_host_clk_release(host);
}

static void mmc_power_off(struct mmc_host *host)
{
    mmc_host_clk_hold(host);

    /*
     * For eMMC 4.5 device send AWAKE command before
     * POWER_OFF_NOTIFY command, because in sleep state
     * eMMC 4.5 devices respond to only RESET and AWAKE cmd
     */
    //if (host->card && mmc_card_is_sleep(host->card)) {
    //  mmc_poweroff_notify(host);
    //}

    /*
     * Reset ocr mask to be the highest possible voltage supported for
     * this mmc host. This value will be used at next power up.
     */
    //host->ocr = 1 << (fls(host->ocr_avail) - 1);
    HAL_SDC_PowerOff(host);
    /*
     * Some configurations, such as the 802.11 SDIO card in the OLPC
     * XO-1.5, require a short delay after poweroff before the card
     * can be successfully turned on again.
     */
    mmc_mdelay(1);

    mmc_host_clk_release(host);
}

static int32_t mmc_go_idle(struct mmc_host *host)
{
    int32_t err;
    struct mmc_command cmd = {0};

    cmd.opcode = MMC_GO_IDLE_STATE;
    cmd.arg = 0;
    cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC;

    err = mmc_wait_for_cmd(host, &cmd);

    mmc_mdelay(1);

    return err;
}

int32_t mmc_send_status(struct mmc_card *card, uint32_t *status)
{
    int32_t err;
    struct mmc_command cmd = {0};

    cmd.opcode = MMC_SEND_STATUS;
    cmd.arg = card->rca << 16;
    cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;

    err = mmc_wait_for_cmd(card->host, &cmd);
    if (err)
        return err;

    /* NOTE: callers are required to understand the difference
     * between "native" and SPI format status words!
     */
    if (status)
        *status = cmd.resp[0];

    return 0;
}

#if ((defined CONFIG_USE_SD) || (defined CONFIG_USE_MMC))
int32_t mmc_sd_switch(struct mmc_card *card, uint8_t mode, uint8_t group,
                             uint16_t value, uint8_t *resp)
{
    struct mmc_request mrq;
    struct mmc_command cmd = {0};
    struct mmc_data data = {0};
    struct scatterlist sg;

    /* NOTE: caller guarantees resp is heap-allocated */

    mode = !!mode;
    value &= 0xF;

    mrq.cmd = &cmd;
    mrq.data = &data;

    cmd.opcode = SD_SWITCH;
    cmd.arg = mode << 31 | 0x00FFFFFF;
    cmd.arg &= ~(0xF << (group * 4));
    cmd.arg |= value << (group * 4);
    cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;

    data.blksz = 64;
    data.blocks = 1;
    data.flags = MMC_DATA_READ;
    data.sg = &sg;
    data.sg_len = 1;

    sg.len = 64;
    sg.buffer = resp;

    if (mmc_wait_for_req(card->host, &mrq)) {
        return -1;
    }

    return 0;
}

static int32_t mmc_switch(struct mmc_card *card, uint8_t set, uint8_t index, uint8_t value)
{
    struct mmc_command cmd = {0};
    int32_t ret;
    uint32_t status = 0;

    cmd.opcode = MMC_SWITCH;
    cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set;
    cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;

    if (mmc_wait_for_cmd(card->host, &cmd)) {
        return -1;
    }

    /* Must check status to be sure of no errors */
    do {
        ret = mmc_send_status(card, &status);
        if (ret)
            return ret;
    } while (R1_CURRENT_STATE(status) == R1_STATE_PRG);

    if (status & 0xFDFFA000)
        SD_LOGW("unexpected status %x after switch", (unsigned int)status);
    if (status & R1_SWITCH_ERROR)
        return -1;

    return 0;
}

int32_t mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
{
    int32_t err;
    struct mmc_command cmd = {0};

    if (!host || (card && (card->host != host))) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s,%d err", __func__, __LINE__);
        return -1;
    }

    cmd.opcode = MMC_APP_CMD;

    if (card) {
        cmd.arg = card->rca << 16;
        cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
    } else {
        cmd.arg = 0;
        cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_BCR;
    }

    err = mmc_wait_for_cmd(host, &cmd);
    if (err)
        return err;

    /* Check that card supported application commands */
    if (!(cmd.resp[0] & R1_APP_CMD))
        return -1;

    return 0;
}

/**
 *  mmc_wait_for_app_cmd - start an application command and wait for
 *                 completion
 *  @host: MMC host to start command
 *  @card: Card to send MMC_APP_CMD to
 *  @cmd: MMC command to start
 *
 *  Sends a MMC_APP_CMD, checks the card response, sends the command
 *  in the parameter and waits for it to complete. Return any error
 *  that occurred while the command was executing.  Do not attempt to
 *  parse the response.
 */
int32_t mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
                             struct mmc_command *cmd)
{
    struct mmc_request mrq = {NULL};

    int32_t i, err;

    if (!cmd) {
        SD_LOGE("%s,%d err", __func__, __LINE__);
        return -1;
    }

    err = -1;

    /*
     * We have to resend MMC_APP_CMD for each attempt so
     * we cannot use the retries field in mmc_command.
     */
    for (i = 0; i <= MMC_CMD_RETRIES; i++) {
        err = mmc_app_cmd(host, card);
        if (err) {
            continue;
        }

        SDC_Memset(&mrq, 0, sizeof(struct mmc_request));

        SDC_Memset(cmd->resp, 0, sizeof(cmd->resp));

        mrq.cmd = cmd;
        cmd->data = NULL;

        err = mmc_wait_for_req(host, &mrq);
        if (!err)
            break;
    }

    return err;
}

int32_t mmc_app_set_bus_width(struct mmc_card *card, uint32_t width)
{
    struct mmc_command cmd = {0};

    cmd.opcode = SET_BUS_WIDTH;
    cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;

    switch (width) {
        case MMC_BUS_WIDTH_1:
            cmd.arg = SD_BUS_WIDTH_1;
            break;
        case MMC_BUS_WIDTH_4:
            cmd.arg = SD_BUS_WIDTH_4;
            break;
        default:
            cmd.arg = SD_BUS_WIDTH_1;
    }

    if (mmc_wait_for_app_cmd(card->host, card, &cmd)) {
        return -1;
    }
    card->bus_width = width;

    return 0;
}

int32_t mmc_switch_to_high_speed(struct mmc_card *card)
{
    int32_t err;

#ifdef CONFIG_USE_MMC
    if (card->csd.mmc_spec_ver < MMC_CSD_SPEC_VER_4) {
        SD_LOGD("MMC card doesn't support to switch to high speed mode !!\n");
        return -1;
    }
#endif

    err = mmc_switch(card, MMC_EXT_CSD_CMD_SET_NORMAL, MMC_EXT_CSD_HS_TIMING, 1);
    if (err) {
        SD_LOGD("MMC card failed to switch to high speed mode !!\n");
        return err;
    }

    SD_LOGD("MMC card is switched to high speed!!\n");

    return 0;
}

int32_t __sdmmc_block_rw(struct mmc_card *card, uint32_t blk_num, uint32_t blk_cnt,
                           uint32_t sg_len, struct scatterlist *sg, int write)
{
    struct mmc_command cmd = {0};
    struct mmc_data data = {0};
    struct mmc_request mrq;
    uint32_t status = 0;

    SD_LOGD("%s %s blk_num:%u, blk_cnt:%u, sg_len:%u sg->len:%u\n", __func__,
            write?"wirte":"read", (unsigned int)blk_num, (unsigned int)blk_cnt, (unsigned int)sg_len, (unsigned int)sg->len);

    if (blk_cnt > 1) {
        cmd.opcode = write ? MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
    } else {
        cmd.opcode = write ? MMC_WRITE_SINGLE_BLOCK : MMC_READ_SINGLE_BLOCK;
    }
    cmd.arg = blk_num;
    if (!mmc_card_blockaddr(card))
        cmd.arg <<= 9;
    cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
    cmd.stop = (blk_cnt == 1) ? 0 : 1;

    data.blksz = 512;
    data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
    data.blocks = blk_cnt;

    data.sg = sg;
    data.sg_len = sg_len;

    mrq.cmd = &cmd;
    mrq.data = &data;

    SD_LOGD("starting CMD%u arg 0x%08x flags %x\n", (unsigned int)cmd.opcode, (unsigned int)cmd.arg, (unsigned int)cmd.flags);
    SD_LOGD("  blksz %u blocks %u flags %x\n", (unsigned int)data.blksz, (unsigned int)data.blocks, (unsigned int)data.flags);
    if (mmc_wait_for_req(card->host, &mrq)) {
        SD_LOGE("%s,%d %s sector:%x BSZ:%u Err!!\n", __func__, __LINE__,
            write?"W":"R", (unsigned int)blk_num, (unsigned int)blk_cnt);

        return -1;
    }
    if (write) {
        uint32_t timeout = 0x3ff;
        do {
            if (HAL_SDC_Is_Busy(card->host) && timeout) {
                timeout--;
                continue;
            } else if (HAL_SDC_Is_Busy(card->host)) {
                goto mdelay;
            }
            if (mmc_send_status(card, &status)) {
                break;
            }
mdelay:
            timeout = 0x3ff;
            /* mmc_mdelay(1); // no mdelay will be faster */
        } while (!(status & 0x100));
    }
    return 0;
}
#endif

void mmc_add_card(struct mmc_card *card)
{
    uint8_t spec_ver = 0;
    uint32_t speed_hz = 0;
    const char *type = NULL;
    const char *speed_mode = "";
#if SD_DEBUG
#ifdef SD_SUPPORT_VERSION3
    static const char *const uhs_speeds[] = {
        [UHS_SDR12_BUS_SPEED] = "SDR12 ",
        [UHS_SDR25_BUS_SPEED] = "SDR25 ",
        [UHS_SDR50_BUS_SPEED] = "SDR50 ",
        [UHS_SDR104_BUS_SPEED] = "SDR104 ",
        [UHS_DDR50_BUS_SPEED] = "DDR50 ",
    };
#endif
#endif

    switch (card->type) {
#ifdef CONFIG_USE_MMC
    case MMC_TYPE_MMC:
        type = "MMC";
        if (card->csd.mmc_spec_ver == 4)
            spec_ver = 0x40;
        else
            spec_ver = 0x31;
        speed_hz = mmc_mmc_get_max_clock(card);
        break;
#endif
#ifdef CONFIG_USE_SD
    case MMC_TYPE_SD:
        type = "SD";
        if (mmc_card_blockaddr(card)) {
            if (mmc_card_ext_capacity(card))
                type = "SDXC";
            else
                type = "SDHC";
        }
        if (card->scr.sda_vsn == 0)
            spec_ver = 0x10;
        else if (card->scr.sda_vsn == 1)
            spec_ver = 0x11;
        else if (card->scr.sda_vsn == 2 && card->scr.sda_spec3)
            spec_ver = 0x30;
        else
            spec_ver = 0x20;
        if (card->scr.sda_vsn == 2 && card->scr.sda_spec3 && card->scr.sda_spec4)
            spec_ver = 0x40;
        if (card->scr.sda_vsn == 2 && card->scr.sda_spec3 && card->scr.sda_spec5)
            spec_ver = 0x50;
        speed_hz = mmc_sd_get_max_clock(card);
        break;
#endif
#ifdef CONFIG_USE_SDIO
    case MMC_TYPE_SDIO:
        type = "SDIO";
        spec_ver = 0x10;
        speed_hz = mmc_sdio_get_max_clock(card);
        break;
#endif
#ifdef CONFIG_USE_SD_COMBO
    case MMC_TYPE_SD_COMBO:
        type = "SD-combo";
        if (mmc_card_blockaddr(card))
            type = "SDHC-combo";
        break;
#endif
    default:
        type = "?";
        break;
    }

#ifdef SD_SUPPORT_VERSION3
    if (mmc_sd_card_uhs(card) &&
        (card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
        speed_mode = uhs_speeds[card->sd_bus_speed];
    else
#endif
    if (card->sd_bus_speed == HIGH_SPEED_BUS_SPEED)
        speed_mode = "HS: 50 MHz";
    else
        speed_mode = "DS: 25 MHz";

    SD_LOGN("\n============= card information ==============\n");
    SD_LOGN("Card Type     : %s\n", type);
    SD_LOGN("Card Spec Ver : %x.%x\n", spec_ver>>4, spec_ver&0xf);
    SD_LOGN("Card RCA      : 0x%04x \n", (unsigned int)card->rca);
    SD_LOGN("Card OCR      : 0x%x\n", (unsigned int)card->ocr.ocr);
    SD_LOGN("    vol_window  : 0x%08x\n", (unsigned int)card->ocr.vol_window);
    SD_LOGN("    to_1v8_acpt : %x\n", (unsigned int)card->ocr.to_1v8_acpt);
    SD_LOGN("    high_capac  : %x\n", (unsigned int)card->ocr.high_capacity);
    SD_LOGN("Card CSD      :\n");
    SD_LOGN("    speed       : %u KHz\n", (unsigned int)speed_hz/1000);
#if ((defined CONFIG_USE_SD) || (defined CONFIG_USE_MMC))
    SD_LOGN("    cmd class   : 0x%x\n", (unsigned int)card->csd.cmdclass);
    SD_LOGN("    capacity    : %dMB\n", (unsigned int)card->csd.capacity/1024);
    SD_LOGN("Card CUR_STA  :\n");
    SD_LOGN("    speed_mode  : %s\n", speed_mode);
    SD_LOGN("    bus_width   : %d\n", (unsigned int)card->bus_width);
    SD_LOGN("    speed_class : %d\n", (unsigned int)card->speed_class);
#else
    (void)speed_mode;
#endif
    SD_LOGN("=============================================\n");
    (void)spec_ver;
    (void)type;
    (void)speed_hz;
    (void)speed_mode;

    mmc_card_set_present(card);
}

#if ((defined CONFIG_USE_SD) || (defined CONFIG_USE_MMC))
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
{
    struct mmc_command cmd = {0};

    if (mmc_card_blockaddr(card) || mmc_card_ddr_mode(card))
        return 0;

    cmd.opcode = MMC_SET_BLOCKLEN;
    cmd.arg = blocklen;
    cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
    return mmc_wait_for_cmd(card->host, &cmd);
}

/**
 * @brief read SD card.
 * @param card:
 *        @arg card->card handler.
 * @param buf:
 *        @arg buf->for store readed data.
 * @param sblk:
 *        @arg sblk->start block num.
 * @param nblk:
 *        @arg nblk->number of blocks.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_block_read(struct mmc_card *card, uint8_t *buf, uint64_t sblk, uint32_t nblk)
{
    int32_t err;
    struct scatterlist sg = {0};

    if (!card || !card->host) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s,%d err", __func__, __LINE__);
        return -1;
    }

    if (nblk > SDXC_MAX_TRANS_LEN/512) {
        SD_LOGW("%s only support len < %d\n", __func__, SDXC_MAX_TRANS_LEN/512);
        return -1;
    }

    if (card->suspend) {
        SD_LOGW("%s id:%d has suspend\n", __func__, (unsigned int)card->id);
        return -1;
    }

    mmc_claim_host(card->host);

    err = mmc_set_blocklen(card, 512);
    if (err)
        goto out;

    sg.len = 512 * nblk;
    sg.buffer = buf;
    //if ((unsigned int)buf & 0x03) {
    //  SD_LOGW("%s buf not align 4!!!\n", __func__);
    //  return -1;
    //}

    err = __sdmmc_block_rw(card, sblk, nblk, 1, &sg, 0);

out:
    mmc_release_host(card->host);
    return err;
}

/**
 * @brief write SD card.
 * @param card:
 *        @arg card->card handler.
 * @param buf:
 *        @arg buf->data will be write.
 * @param sblk:
 *        @arg sblk->start block num.
 * @param nblk:
 *        @arg nblk->number of blocks.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_block_write(struct mmc_card *card, const uint8_t *buf, uint64_t sblk, uint32_t nblk)
{
    int32_t err;
    struct scatterlist sg = {0};

    if (!card || !card->host) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s,%d err", __func__, __LINE__);
        return -1;
    }

    if (nblk > SDXC_MAX_TRANS_LEN/512) {
        SD_LOGW("%s only support block number < %d\n", __func__, SDXC_MAX_TRANS_LEN/512);
        return -1;
    }

    if (card->suspend) {
        SD_LOGW("%s id:%d has suspend\n", __func__, (unsigned int)card->id);
        return -1;
    }

    mmc_claim_host(card->host);

    err = mmc_set_blocklen(card, 512);
    if (err)
        goto out;

    sg.len = 512 * nblk;
    sg.buffer = (uint8_t *)buf;
    //if ((unsigned int)buf & 0x03) {
    //  SD_LOGW("%s buf not align 4!!!\n", __func__);
    //  return -1;
    //}

    err = __sdmmc_block_rw(card, sblk, nblk, 1, &sg, 1);

out:
    mmc_release_host(card->host);
    return err;
}
#endif

int32_t mmc_send_relative_addr(struct mmc_host *host, uint32_t *rca)
{
    struct mmc_command cmd = {0};

    cmd.opcode = SD_SEND_RELATIVE_ADDR;
    cmd.arg = 0;
    cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;

    do {
        if (mmc_wait_for_cmd(host, &cmd)) {
            return -1;
        }
        *rca = cmd.resp[0] >> 16;
    } while (!*rca);

    return 0;
}

int32_t mmc_send_if_cond(struct mmc_host *host, uint32_t ocr)
{
    struct mmc_command cmd = {0};
    int32_t err;
    static const uint8_t test_pattern = 0xAA;
    uint8_t result_pattern;

    /*
     * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
     * before SD_APP_OP_COND. This command will harmlessly fail for
     * SD 1.0 cards.
     */
    cmd.opcode = SD_SEND_IF_COND;
    cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern;
    cmd.flags = MMC_RSP_SPI_R7 | MMC_RSP_R7 | MMC_CMD_BCR;

    err = mmc_wait_for_cmd(host, &cmd);
    if (err)
        return err;

    result_pattern = cmd.resp[0] & 0xFF;

    if (result_pattern != test_pattern)
        return -1;

    return 0;
}

int32_t mmc_select_card(struct mmc_card *card, uint32_t select)
{
    struct mmc_command cmd = {0};

    cmd.opcode = MMC_SELECT_CARD;
    if (select) {
        cmd.arg = card->rca << 16;
        cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
    } else {
        cmd.arg = 0;
        cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
    }

    if (mmc_wait_for_cmd(card->host, &cmd)) {
        return -1;
    }

    return 0;
}

int32_t mmc_all_send_cid(struct mmc_host *host, uint32_t *cid)
{
    int32_t err;
    struct mmc_command cmd = {0};

    if (!host || !cid) {
        SDC_LOGE_RAW(ROM_ERR_MASK, "%s,%d err", __func__, __LINE__);
        return -1;
    }

    cmd.opcode = MMC_ALL_SEND_CID;
    cmd.arg = 0;
    cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;

    err = mmc_wait_for_cmd(host, &cmd);
    if (err)
        return err;

    HAL_Memcpy(cid, cmd.resp, sizeof(uint32_t) * 4);

    return 0;
}

#ifdef CONFIG_SD_PM
/*
 * Assign a mmc bus handler to a host. Only one bus handler may control a
 * host at any given time.
 */
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops)
{
    unsigned long flags;

    if (!host || !ops) {
        SDC_LOGE_RAW(ROM_ERR_MASK, "%s,%d err", __func__, __LINE__);
        return ;
    }

    flags = HAL_EnterCriticalSection();
    SD_WARN_ON(host->bus_ops);
    host->bus_ops = ops;
    HAL_ExitCriticalSection(flags);
}

/*
 * Remove the current bus handler from a host.
 */
void mmc_detach_bus(struct mmc_host *host)
{
    unsigned long flags;

    if (!host) {
        SDC_LOGE_RAW(ROM_ERR_MASK, "%s err\n", __func__);
        return ;
    }

    if (!host->bus_ops)
        return ;

    flags = HAL_EnterCriticalSection();
    host->bus_ops = NULL;
    HAL_ExitCriticalSection(flags);
}

#endif

/**
 * @brief scan or rescan SD card.
 * @param card:
 *        @arg card->card handler.
 * @param sdc_id:
 *        @arg sdc_id->SDC ID which card on.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_rescan(struct mmc_card *card, uint32_t sdc_id)
{
    int32_t err = -1;
    struct mmc_host *host = hal_sdc_open(sdc_id);

    if (!host) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s init sdc host first!!\n", __func__);
        return -1;
    }

    card->host = host;

    mmc_claim_host(host);

    mmc_power_up(host);

    /* set identification clock 400KHz */
    HAL_SDC_Update_Clk(card->host, 400000);

    /* Initialization should be done at 3.3 V I/O voltage. */
    //mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);

    /*
     * sdio_reset sends CMD52 to reset card.  Since we do not know
     * if the card is being re-initialized, just send it.  CMD52
     * should be ignored by SD/eMMC cards.
     */
#ifdef CONFIG_USE_SDIO
    if (!card->type || card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO)
        sdio_reset(host);
#endif
    mmc_go_idle(host);

#ifdef CONFIG_USE_SD
    /* cmd8 for SD2.0 */
    if (mmc_send_if_cond(host, host->ocr_avail)) {
        SD_LOGN("sd1.0 or mmc\n");
    }
#endif

    /* Order's important: probe SDIO, then SD, then MMC */
#ifdef CONFIG_USE_SDIO
    if (!card->type || card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
        SD_LOGN("***** Try sdio *****\n");
        if (!mmc_attach_sdio(card, host)){
            SD_LOGN("***** sdio init ok *****\n");
            err = 0;
            goto out;
        }
    }
#endif
#ifdef CONFIG_USE_SD
    if (!card->type || card->type == MMC_TYPE_SD) {
        SD_LOGN("***** Try sd *****\n");
        if (!mmc_attach_sd(card, host)){
            SD_LOGN("***** sd init ok *****\n");
            err = 0;
            goto out;
        }
    }
#endif
#ifdef CONFIG_USE_MMC
    if (!card->type || card->type == MMC_TYPE_MMC) {
        SD_LOGN("***** Try mmc *****\n");
        if (!mmc_attach_mmc(card, host)){
            SD_LOGN("***** mmc init ok *****\n");
            err = 0;
            goto out;
        }
    }
#endif

    SD_LOGD("Undown Card Detected!!\n");

#ifdef CONFIG_USE_SD
    mmc_deattach_sd(card, host);
#endif

    mmc_power_off(host);

out:
    mmc_release_host(host);
    return err;
}

/**
 * @brief deinit SD card.
 * @param card:
 *        @arg card->card handler.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_card_deinit(struct mmc_card *card)
{
    struct mmc_host *host;

    if (!card || !card->host) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s err\n", __func__);
        return -1;
    }

    host = card->host;

#ifdef CONFIG_USE_SDIO
    if (mmc_card_sdio(card) || mmc_card_sd_combo(card))
        mmc_deattach_sdio(card, host);
#endif
#ifdef CONFIG_USE_SD
    if (mmc_card_sd(card))
        mmc_deattach_sd(card, host);
#endif

    mmc_power_off(host);
    hal_sdc_close(host->sdc_id);

    return 0;
}

static struct mmc_card *card_info[SDC_NUM];

struct sdio_func ** get_mmc_card_func(uint8_t card_id)
{
    struct mmc_card *card = card_info[card_id];
    if(card == NULL) {
        return NULL;
    }else {
        return card->sdio_func;
    }
}

/**
 * @brief malloc for card_info.
 * @param card_id:
 *        @arg card ID.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_card_create(uint8_t card_id, SDCard_InitTypeDef *param)
{
    int ret = 0;
    struct mmc_card *card = card_info[card_id];

    if (card != NULL) {
        if (card->id == card_id) {
            SD_LOGW_RAW(param->debug_mask, "%s id:%d already!!\n", __func__, card_id);
            return 0;
        } else {
            SD_LOGE_RAW(param->debug_mask, "%s id:%d unvalid card id!!\n", __func__, card_id);
            return -1;
        }
    }

    card = HAL_Malloc(sizeof(struct mmc_card));
    if (card == NULL) {
        SD_LOGE_RAW(param->debug_mask, "%s malloc fail\n", __func__);
        ret = -1;
    } else {
        SDC_Memset(card, 0, sizeof(struct mmc_card));
        SDC_MutexCreate(&card->mutex);
        SDC_MutexLock(&card->mutex, OS_WAIT_FOREVER);
        card->id = card_id;
        printf("card id is %d\n", (unsigned int)card->id);
        card->ref = 0;
        card->debug_mask = param->debug_mask;
        if (param->type < MMC_TYPE_MAX)
            card->type = param->type;
        card_info[card_id] = card;
        SDC_MutexUnlock(&card->mutex);
        SD_LOGN("%s card:%p id:%d\n", __func__, card, (unsigned int)card->id);
    }

    return ret;
}

/**
 * @brief free for card_info.
 * @param card_id:
 *        @arg card ID.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_card_delete(uint8_t card_id)
{
    int ret = -1;
    struct mmc_card *card = card_info[card_id];

    if (card == NULL || card->id != card_id) {
        SD_LOGW_RAW(ROM_WRN_MASK, "%s card not exit! card:%p id:%d del_id:%d\n", \
                __func__, card, (unsigned int)card->id, (unsigned int)card_id);
        return -1;
    }

    SDC_MutexLock(&card->mutex, OS_WAIT_FOREVER);
    if (card->ref != 0) {
        SDC_MutexUnlock(&card->mutex);
        SD_LOGW("%s fail, ref:%d\n", __func__, (unsigned int)card->ref);
        goto out;
    }
    card_info[card_id] = NULL;
    SDC_MutexUnlock(&card->mutex);
    SDC_MutexDelete(&card->mutex);
    SD_LOGN("%s card:%p id:%d\n", __func__, card, (unsigned int)card->id);
    HAL_Free(card);
    ret = 0;

out:

    return ret;
}

/**
 * @brief get pointer of mmc_card.
 * @param card_id:
 *        @arg card ID.
 * @retval  pointer of mmc_card if success or NULL if failed.
 */
struct mmc_card *mmc_card_open(uint8_t card_id)
{
    struct mmc_card *card = card_info[card_id];

    if (card == NULL || card->id != card_id) {
        SD_LOGW_RAW(ROM_WRN_MASK, "%s card not exit! id:%d\n",  __func__, card_id);
        return NULL;
    }

    SDC_MutexLock(&card->mutex, OS_WAIT_FOREVER);
    card->ref++;
    SDC_MutexUnlock(&card->mutex);
    SD_LOGD("%s card:%p id:%d\n", __func__, card, (unsigned int)card->id);

    return card;
}

/**
 * @brief close mmc_card.
 * @param card_id:
 *        @arg card ID.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_card_close(uint8_t card_id)
{
    struct mmc_card *card = card_info[card_id];

    if (card == NULL || card->id != card_id || card->ref <= 0) {
        SD_LOGW_RAW(ROM_WRN_MASK, "%s fail! id:%d\n",  __func__, card_id);
        return -1;
    }

    SDC_MutexLock(&card->mutex, OS_WAIT_FOREVER);
    card->ref--;
    SDC_MutexUnlock(&card->mutex);
    SD_LOGD("%s card:%p id:%d\n", __func__, card, (unsigned int)card->id);

    return 0;
}

extern struct sdio_func *sdio_alloc_func(struct mmc_card *card);
extern int32_t sdio_add_func(struct sdio_func *func, uint32_t id);
extern int mmc_sdio_remove(struct mmc_host *host);
#define SDIO_DEBUG_SAVE_CARD
/**
 * @brief save mmc_card.
 * @param card_id:
 *        @arg card ID.
 * @retval  0 if success or other if failed.
 */
struct mmc_card_info* mmc_card_save(uint8_t card_id)
{
    struct mmc_card_info *s_card_info;
    struct mmc_card *card = card_info[card_id];
    int32_t funcs;
    int32_t i;

    s_card_info = HAL_Malloc(sizeof(struct mmc_card_info));
    if (s_card_info == NULL) {
        SD_LOGE("%s malloc fail\n", __func__);
        goto out;
    }
    //mmc_card_create(uint8_t card_id, SDCard_InitTypeDef *param);
    memcpy(&(s_card_info->card), card, sizeof(struct mmc_card));
#ifdef CONFIG_SDIO_USE_FUNS
    for (i = 0; i < card->sdio_funcs; i++) {
        memcpy(&s_card_info->sdio_func[i], card->sdio_func[i], sizeof(struct sdio_func));
    }
#else
    (void)funcs;
#endif
    s_card_info->sdc_id = card->host->sdc_id;

out:
    return s_card_info;
}

static int32_t sdio_init_func_by_func(struct mmc_card *card, uint32_t fn, struct sdio_func *sdio_func)
{
    int32_t ret;
    struct sdio_func *func;

    if (fn > SDIO_MAX_FUNCS)
        SD_LOGE("%s,%d wrong fn:%ld!\n", __func__, __LINE__, HAL_PR_SZ_L(fn));

    func = sdio_alloc_func(card);
    if (!func)
        return -1;

    func->num = fn;
    memcpy(func, sdio_func, sizeof(struct sdio_func));

    card->sdio_func[fn - 1] = func;
    printf("func address %p\n",func);
    return 0;
}
/**
 * @brief restore mmc_card.
 * @param card_id:
 *        @arg card ID.
 * @retval  0 if success or other if failed.
 */
int32_t mmc_card_restore(struct mmc_card_info *s_card_info)
{
    OS_Mutex_t *tmp_mutex;
    uint32_t card_id = s_card_info->card.id;
    uint32_t sdc_id = s_card_info->sdc_id;
    struct mmc_card *card = card_info[card_id];
    int32_t ret;
    struct mmc_host *host = hal_sdc_open(sdc_id);
    int32_t funcs;
    int32_t i;
    int err = -1;
    SDCard_InitTypeDef card_param;

    card_param.debug_mask = (ROM_INF_MASK | \
                         ROM_WRN_MASK | ROM_ERR_MASK | ROM_ANY_MASK);
    if (!host) {
        SD_LOGE_RAW(ROM_ERR_MASK, "%s init sdc host first!!\n", __func__);
        return -1;
    }

    /********reinit mmc_card struct*******/
    if (mmc_card_create(card_id, &card_param))
        goto create_fail;
    card = card_info[card_id];
    tmp_mutex = &card->mutex;
    s_card_info->card.mutex = *tmp_mutex;
    s_card_info->card.ref = 0;
    memcpy(card, &(s_card_info->card), sizeof(struct mmc_card));
    card->host = host;
    /********restore host config*********/
    mmc_claim_host(host);

    mmc_power_up(host);

    {
        /*
         * Switch to high-speed (if supported).
         * state have been restore
         */
        //mmc_card_set_highspeed(card);
        //SD_LOGN("sdio highspeed \n");

        /*
         * Change to the card's maximum speed.
         */
        HAL_SDC_Update_Clk(card->host, mmc_sdio_get_max_clock(card));

    /*
         * Switch to wider bus (if supported).
        */
    /* sd Host Controller Register SDXC_REG_WIDTH */
        HAL_SDC_Set_BusWidth(card->host, MMC_BUS_WIDTH_4);
        SD_LOGN("%s bus width type:%d\n", __func__, MMC_BUS_WIDTH_4);
    }
    card->host->card = card;
    funcs = (card->ocr.ocr >> 28) & 0x7;

    SD_LOGD("Number of I/O Functions: %02lx\n", HAL_PR_SZ_L(funcs));
    /*
     * Initialize (but don't add) all present functions.
     */
#ifdef CONFIG_SDIO_USE_FUNS
    card->sdio_funcs = 0;
    for (i = 0; i < funcs; i++, card->sdio_funcs++) {
        err = sdio_init_func_by_func(card, i + 1, &(s_card_info->sdio_func[i]));
    if (err)
            goto remove;
    }
#endif
    /*
     * First add the card to the driver model...
     */
    mmc_release_host(host);

    if (host->caps & MMC_CAP_SDIO_IRQ) {
        int ret =  OS_SemaphoreCreateBinary(&host->sdio_irq_signal);
        SDC_BUG_ON(ret!=OS_OK);
    }
    mmc_add_card(card_info[card_id]);
#ifdef CONFIG_SDIO_USE_FUNS
    for (i = 0; i < funcs; i++) {
        err = sdio_add_func(host->card->sdio_func[i], i);
        if (err)
            goto remove_added;
    }
#else
    (void)funcs;
#endif

    mmc_claim_host(host);
#ifdef CONFIG_SD_PM
    if (!card->suspend) {
        mmc_attach_bus(host, &sdio_bus_ops);
    }
#endif
    return 0;

#ifdef CONFIG_SDIO_USE_FUNS
remove_added:
    /* Remove without lock if the device has been added. */
    mmc_sdio_remove(host);
#endif
    card->host->card = NULL;
    mmc_claim_host(host);

#ifdef CONFIG_SDIO_USE_FUNS
remove:
    /* And with lock if it hasn't been added. */
    mmc_release_host(host);
    if (host->card) {
        mmc_sdio_remove(host);
        card->host->card = NULL;
    }
    mmc_claim_host(host);
#else
    card->host->card = NULL;
#endif
create_fail:
    SD_LOGE("%s: error %d whilst initialising SDIO card\n", __func__, err);

    return err;
}