rt-thread/components/drivers/include/drivers/mmcsd_core.h

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author        Notes
 * 2011-07-25     weety         first version
 */

#ifndef __CORE_H__
#define __CORE_H__

#include <rtthread.h>
#include <drivers/mmcsd_host.h>
#include <drivers/mmcsd_card.h>
#include <drivers/mmcsd_cmd.h>
#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

#ifdef RT_MMCSD_DBG
#define mmcsd_dbg(fmt, ...)  rt_kprintf(fmt, ##__VA_ARGS__)
#else
#define mmcsd_dbg(fmt, ...)
#endif

struct rt_mmcsd_data
{
    rt_uint32_t  blksize;
    rt_uint32_t  blks;
    rt_uint32_t  *buf;
    rt_int32_t  err;
    rt_uint32_t  flags;
#define DATA_DIR_WRITE  (1 << 0)
#define DATA_DIR_READ   (1 << 1)
#define DATA_STREAM     (1 << 2)

    unsigned int        bytes_xfered;

    struct rt_mmcsd_cmd *stop;      /* stop command */
    struct rt_mmcsd_req *mrq;       /* associated request */

    rt_uint32_t  timeout_ns;
    rt_uint32_t  timeout_clks;

    void *sg; /* scatter list */
    rt_uint16_t sg_len; /* size of scatter list */
    rt_int16_t sg_count; /* mapped sg entries */
    rt_ubase_t host_cookie; /* host driver private data */
};

struct rt_mmcsd_cmd
{
    rt_uint32_t  cmd_code;
    rt_uint32_t  arg;
    rt_uint32_t  resp[4];
    rt_uint32_t  flags;
    /*rsponse types
     *bits:0~3
     */
#define RESP_MASK   (0xF)
#define RESP_NONE   (0)
#define RESP_R1     (1 << 0)
#define RESP_R1B    (2 << 0)
#define RESP_R2     (3 << 0)
#define RESP_R3     (4 << 0)
#define RESP_R4     (5 << 0)
#define RESP_R6     (6 << 0)
#define RESP_R7     (7 << 0)
#define RESP_R5     (8 << 0)    /*SDIO command response type*/
    /*command types
     *bits:4~5
     */
#define CMD_MASK    (3 << 4)        /* command type */
#define CMD_AC      (0 << 4)
#define CMD_ADTC    (1 << 4)
#define CMD_BC      (2 << 4)
#define CMD_BCR     (3 << 4)

#define resp_type(cmd)  ((cmd)->flags & RESP_MASK)

    /*spi rsponse types
     *bits:6~8
     */
#define RESP_SPI_MASK   (0x7 << 6)
#define RESP_SPI_R1 (1 << 6)
#define RESP_SPI_R1B    (2 << 6)
#define RESP_SPI_R2 (3 << 6)
#define RESP_SPI_R3 (4 << 6)
#define RESP_SPI_R4 (5 << 6)
#define RESP_SPI_R5 (6 << 6)
#define RESP_SPI_R7 (7 << 6)

#define spi_resp_type(cmd)  ((cmd)->flags & RESP_SPI_MASK)
    /*
     * These are the command types.
     */
#define cmd_type(cmd)   ((cmd)->flags & CMD_MASK)

    rt_int32_t  retries;            /* max number of retries */
    rt_int32_t  err;
    unsigned int busy_timeout;      /* busy detect timeout in ms */

    struct rt_mmcsd_data *data;
    struct rt_mmcsd_req *mrq;       /* associated request */
};

struct rt_mmcsd_req
{
    struct rt_mmcsd_data  *data;
    struct rt_mmcsd_cmd   *cmd;
    struct rt_mmcsd_cmd   *stop;
    struct rt_mmcsd_cmd *sbc;       /* SET_BLOCK_COUNT for multiblock */
    /* Allow other commands during this ongoing data transfer or busy wait */
    int cap_cmd_during_tfr;
};

/*the following is response bit*/
#define R1_OUT_OF_RANGE     (1 << 31)   /* er, c */
#define R1_ADDRESS_ERROR    (1 << 30)   /* erx, c */
#define R1_BLOCK_LEN_ERROR  (1 << 29)   /* er, c */
#define R1_ERASE_SEQ_ERROR  (1 << 28)   /* er, c */
#define R1_ERASE_PARAM      (1 << 27)   /* ex, c */
#define R1_WP_VIOLATION     (1 << 26)   /* erx, c */
#define R1_CARD_IS_LOCKED   (1 << 25)   /* sx, a */
#define R1_LOCK_UNLOCK_FAILED   (1 << 24)   /* erx, c */
#define R1_COM_CRC_ERROR    (1 << 23)   /* er, b */
#define R1_ILLEGAL_COMMAND  (1 << 22)   /* er, b */
#define R1_CARD_ECC_FAILED  (1 << 21)   /* ex, c */
#define R1_CC_ERROR     (1 << 20)   /* erx, c */
#define R1_ERROR        (1 << 19)   /* erx, c */
#define R1_UNDERRUN     (1 << 18)   /* ex, c */
#define R1_OVERRUN      (1 << 17)   /* ex, c */
#define R1_CID_CSD_OVERWRITE    (1 << 16)   /* erx, c, CID/CSD overwrite */
#define R1_WP_ERASE_SKIP    (1 << 15)   /* sx, c */
#define R1_CARD_ECC_DISABLED    (1 << 14)   /* sx, a */
#define R1_ERASE_RESET      (1 << 13)   /* sr, c */
#define R1_STATUS(x)            (x & 0xFFFFE000)
#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
#define R1_READY_FOR_DATA   (1 << 8)    /* sx, a */
#define R1_APP_CMD          (1 << 5)    /* sr, c */


#define R1_SPI_IDLE     (1 << 0)
#define R1_SPI_ERASE_RESET  (1 << 1)
#define R1_SPI_ILLEGAL_COMMAND  (1 << 2)
#define R1_SPI_COM_CRC      (1 << 3)
#define R1_SPI_ERASE_SEQ    (1 << 4)
#define R1_SPI_ADDRESS      (1 << 5)
#define R1_SPI_PARAMETER    (1 << 6)
/* R1 bit 7 is always zero */
#define R2_SPI_CARD_LOCKED  (1 << 8)
#define R2_SPI_WP_ERASE_SKIP    (1 << 9)    /* or lock/unlock fail */
#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
#define R2_SPI_ERROR        (1 << 10)
#define R2_SPI_CC_ERROR     (1 << 11)
#define R2_SPI_CARD_ECC_ERROR   (1 << 12)
#define R2_SPI_WP_VIOLATION (1 << 13)
#define R2_SPI_ERASE_PARAM  (1 << 14)
#define R2_SPI_OUT_OF_RANGE (1 << 15)   /* or CSD overwrite */
#define R2_SPI_CSD_OVERWRITE    R2_SPI_OUT_OF_RANGE

#define CARD_BUSY   0x80000000  /* Card Power up status bit */

/* R5 response bits */
#define R5_COM_CRC_ERROR    (1 << 15)
#define R5_ILLEGAL_COMMAND  (1 << 14)
#define R5_ERROR            (1 << 11)
#define R5_FUNCTION_NUMBER  (1 << 9)
#define R5_OUT_OF_RANGE     (1 << 8)
#define R5_STATUS(x)        (x & 0xCB00)
#define R5_IO_CURRENT_STATE(x)  ((x & 0x3000) >> 12)

/**
 * fls - find last (most-significant) bit set
 * @x: the word to search
 *
 * This is defined the same way as ffs.
 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
 */

rt_inline rt_uint32_t __rt_fls(rt_uint32_t val)
{
    rt_uint32_t  bit = 32;

    if (!val)
        return 0;
    if (!(val & 0xffff0000u))
    {
        val <<= 16;
        bit -= 16;
    }
    if (!(val & 0xff000000u))
    {
        val <<= 8;
        bit -= 8;
    }
    if (!(val & 0xf0000000u))
    {
        val <<= 4;
        bit -= 4;
    }
    if (!(val & 0xc0000000u))
    {
        val <<= 2;
        bit -= 2;
    }
    if (!(val & 0x80000000u))
    {
        bit -= 1;
    }

    return bit;
}

#define MMCSD_HOST_PLUGED       0
#define MMCSD_HOST_UNPLUGED     1

rt_int32_t mmcsd_excute_tuning(struct rt_mmcsd_card *card);
int mmcsd_wait_cd_changed(rt_int32_t timeout);
void mmcsd_host_lock(struct rt_mmcsd_host *host);
void mmcsd_host_unlock(struct rt_mmcsd_host *host);
void mmcsd_req_complete(struct rt_mmcsd_host *host);
void mmcsd_send_request(struct rt_mmcsd_host *host, struct rt_mmcsd_req *req);
rt_int32_t mmcsd_send_cmd(struct rt_mmcsd_host *host, struct rt_mmcsd_cmd *cmd, int retries);
rt_int32_t mmcsd_go_idle(struct rt_mmcsd_host *host);
rt_int32_t mmcsd_spi_read_ocr(struct rt_mmcsd_host *host, rt_int32_t high_capacity, rt_uint32_t *ocr);
rt_int32_t mmcsd_all_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid);
rt_int32_t mmcsd_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid);
rt_int32_t mmcsd_get_csd(struct rt_mmcsd_card *card, rt_uint32_t *csd);
rt_int32_t mmcsd_select_card(struct rt_mmcsd_card *card);
rt_int32_t mmcsd_deselect_cards(struct rt_mmcsd_card *host);
rt_int32_t mmcsd_spi_use_crc(struct rt_mmcsd_host *host, rt_int32_t use_crc);
void mmcsd_set_chip_select(struct rt_mmcsd_host *host, rt_int32_t mode);
void mmcsd_set_clock(struct rt_mmcsd_host *host, rt_uint32_t clk);
void mmcsd_set_bus_mode(struct rt_mmcsd_host *host, rt_uint32_t mode);
void mmcsd_set_bus_width(struct rt_mmcsd_host *host, rt_uint32_t width);
void mmcsd_set_timing(struct rt_mmcsd_host *host, rt_uint32_t timing);
void mmcsd_set_data_timeout(struct rt_mmcsd_data *data, const struct rt_mmcsd_card *card);
rt_uint32_t mmcsd_select_voltage(struct rt_mmcsd_host *host, rt_uint32_t ocr);
void mmcsd_change(struct rt_mmcsd_host *host);
void mmcsd_detect(void *param);
void mmcsd_host_init(struct rt_mmcsd_host *host);
struct rt_mmcsd_host *mmcsd_alloc_host(void);
void mmcsd_free_host(struct rt_mmcsd_host *host);
int rt_mmcsd_core_init(void);

int rt_mmcsd_blk_init(void);
rt_int32_t read_lba(struct rt_mmcsd_card *card, size_t lba, uint8_t *buffer, size_t count);
rt_int32_t rt_mmcsd_blk_probe(struct rt_mmcsd_card *card);
void rt_mmcsd_blk_remove(struct rt_mmcsd_card *card);

#ifdef __cplusplus
}
#endif

#endif