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/*

 * Copyright 2008,2010 Freescale Semiconductor, Inc

 * Andy Fleming

 *

 * Based (loosely) on the Linux code

 *

 * See file CREDITS for list of people who contributed to this

 * project.

 *

 * 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 program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,

 * MA 02111-1307 USA

 */

#ifndef _MMC_H_

#define _MMC_H_

#include <sys/types.h>

#define SD_VERSION_SD   0x20000

#define SD_VERSION_2    (SD_VERSION_SD | 0x20)

#define SD_VERSION_1_0  (SD_VERSION_SD | 0x10)

#define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)

#define MMC_VERSION_MMC         0x10000

#define MMC_VERSION_UNKNOWN     (MMC_VERSION_MMC)

#define MMC_VERSION_1_2         (MMC_VERSION_MMC | 0x12)

#define MMC_VERSION_1_4         (MMC_VERSION_MMC | 0x14)

#define MMC_VERSION_2_2         (MMC_VERSION_MMC | 0x22)

#define MMC_VERSION_3           (MMC_VERSION_MMC | 0x30)

#define MMC_VERSION_4           (MMC_VERSION_MMC | 0x40)

#define MMC_MODE_HS             0x001

#define MMC_MODE_HS_52MHz       0x010

#define MMC_MODE_4BIT           0x100

#define MMC_MODE_8BIT           0x200

#define MMC_MODE_SPI            0x400

#define MMC_MODE_HC             0x800

#define MMC_MODE_MASK_WIDTH_BITS (MMC_MODE_4BIT | MMC_MODE_8BIT)

#define MMC_MODE_WIDTH_BITS_SHIFT 8

#define SD_DATA_4BIT    0x00040000

#define IS_SD(x) (x->version & SD_VERSION_SD)

#define MMC_DATA_READ           1

#define MMC_DATA_WRITE          2

#define NO_CARD_ERR             -16 /* No SD/MMC card inserted */

#define UNUSABLE_ERR            -17 /* Unusable Card */

#define COMM_ERR                -18 /* Communications Error */

#define TIMEOUT                 -19

#define MMC_CMD_GO_IDLE_STATE           0

#define MMC_CMD_SEND_OP_COND            1

#define MMC_CMD_ALL_SEND_CID            2

#define MMC_CMD_SET_RELATIVE_ADDR       3

#define MMC_CMD_SET_DSR                 4

#define MMC_CMD_SWITCH                  6

#define MMC_CMD_SELECT_CARD             7

#define MMC_CMD_SEND_EXT_CSD            8

#define MMC_CMD_SEND_CSD                9

#define MMC_CMD_SEND_CID                10

#define MMC_CMD_STOP_TRANSMISSION       12

#define MMC_CMD_SEND_STATUS             13

#define MMC_CMD_SET_BLOCKLEN            16

#define MMC_CMD_READ_SINGLE_BLOCK       17

#define MMC_CMD_READ_MULTIPLE_BLOCK     18

#define MMC_CMD_WRITE_SINGLE_BLOCK      24

#define MMC_CMD_WRITE_MULTIPLE_BLOCK    25

#define MMC_CMD_ERASE_GROUP_START       35

#define MMC_CMD_ERASE_GROUP_END         36

#define MMC_CMD_ERASE                   38

#define MMC_CMD_APP_CMD                 55

#define MMC_CMD_SPI_READ_OCR            58

#define MMC_CMD_SPI_CRC_ON_OFF          59

#define SD_CMD_SEND_RELATIVE_ADDR       3

#define SD_CMD_SWITCH_FUNC              6

#define SD_CMD_SEND_IF_COND             8

#define SD_CMD_APP_SET_BUS_WIDTH        6

#define SD_CMD_ERASE_WR_BLK_START       32

#define SD_CMD_ERASE_WR_BLK_END         33

#define SD_CMD_APP_SEND_OP_COND         41

#define SD_CMD_APP_SEND_SCR             51

/* SCR definitions in different words */

#define SD_HIGHSPEED_BUSY       0x00020000

#define SD_HIGHSPEED_SUPPORTED  0x00020000

#define MMC_HS_TIMING           0x00000100

#define MMC_HS_52MHZ            0x2

#define OCR_BUSY                0x80000000

#define OCR_HCS                 0x40000000

#define OCR_VOLTAGE_MASK        0x007FFF80

#define OCR_ACCESS_MODE         0x60000000

#define SECURE_ERASE            0x80000000

#define MMC_STATUS_MASK         (~0x0206BF7F)

#define MMC_STATUS_RDY_FOR_DATA (1 << 8)

#define MMC_STATUS_CURR_STATE   (0xf << 9)

#define MMC_STATUS_ERROR        (1 << 19)

#define MMC_STATE_PRG           (7 << 9)

#define MMC_VDD_165_195         0x00000080      /* VDD voltage 1.65 - 1.95 */

#define MMC_VDD_20_21           0x00000100      /* VDD voltage 2.0 ~ 2.1 */

#define MMC_VDD_21_22           0x00000200      /* VDD voltage 2.1 ~ 2.2 */

#define MMC_VDD_22_23           0x00000400      /* VDD voltage 2.2 ~ 2.3 */

#define MMC_VDD_23_24           0x00000800      /* VDD voltage 2.3 ~ 2.4 */

#define MMC_VDD_24_25           0x00001000      /* VDD voltage 2.4 ~ 2.5 */

#define MMC_VDD_25_26           0x00002000      /* VDD voltage 2.5 ~ 2.6 */

#define MMC_VDD_26_27           0x00004000      /* VDD voltage 2.6 ~ 2.7 */

#define MMC_VDD_27_28           0x00008000      /* VDD voltage 2.7 ~ 2.8 */

#define MMC_VDD_28_29           0x00010000      /* VDD voltage 2.8 ~ 2.9 */

#define MMC_VDD_29_30           0x00020000      /* VDD voltage 2.9 ~ 3.0 */

#define MMC_VDD_30_31           0x00040000      /* VDD voltage 3.0 ~ 3.1 */

#define MMC_VDD_31_32           0x00080000      /* VDD voltage 3.1 ~ 3.2 */

#define MMC_VDD_32_33           0x00100000      /* VDD voltage 3.2 ~ 3.3 */

#define MMC_VDD_33_34           0x00200000      /* VDD voltage 3.3 ~ 3.4 */

#define MMC_VDD_34_35           0x00400000      /* VDD voltage 3.4 ~ 3.5 */

#define MMC_VDD_35_36           0x00800000      /* VDD voltage 3.5 ~ 3.6 */

#define MMC_SWITCH_MODE_CMD_SET         0x00 /* Change the command set */

#define MMC_SWITCH_MODE_SET_BITS        0x01 /* Set bits in EXT_CSD byte

                                                addressed by index which are

                                                1 in value field */

#define MMC_SWITCH_MODE_CLEAR_BITS      0x02 /* Clear bits in EXT_CSD byte

                                                addressed by index, which are

                                                1 in value field */

#define MMC_SWITCH_MODE_WRITE_BYTE      0x03 /* Set target byte to value */

#define SD_SWITCH_CHECK         0

#define SD_SWITCH_SWITCH        1

/*

 * EXT_CSD fields

 */

#define EXT_CSD_PARTITIONING_SUPPORT    160     /* RO */

#define EXT_CSD_ERASE_GROUP_DEF         175     /* R/W */

#define EXT_CSD_PART_CONF               179     /* R/W */

#define EXT_CSD_BUS_WIDTH               183     /* R/W */

#define EXT_CSD_HS_TIMING               185     /* R/W */

#define EXT_CSD_REV                     192     /* RO */

#define EXT_CSD_CARD_TYPE               196     /* RO */

#define EXT_CSD_SEC_CNT                 212     /* RO, 4 bytes */

#define EXT_CSD_HC_ERASE_GRP_SIZE       224     /* RO */

#define EXT_CSD_BOOT_MULT               226     /* RO */

/*

 * EXT_CSD field definitions

 */

#define EXT_CSD_CMD_SET_NORMAL          (1 << 0)

#define EXT_CSD_CMD_SET_SECURE          (1 << 1)

#define EXT_CSD_CMD_SET_CPSECURE        (1 << 2)

#define EXT_CSD_CARD_TYPE_26    (1 << 0)        /* Card can run at 26MHz */

#define EXT_CSD_CARD_TYPE_52    (1 << 1)        /* Card can run at 52MHz */

#define EXT_CSD_BUS_WIDTH_1     0        /* Card is in 1 bit mode */

#define EXT_CSD_BUS_WIDTH_4     1       /* Card is in 4 bit mode */

#define EXT_CSD_BUS_WIDTH_8     2       /* Card is in 8 bit mode */

#define R1_ILLEGAL_COMMAND              (1 << 22)

#define R1_APP_CMD                      (1 << 5)

#define MMC_RSP_PRESENT (1 << 0)

#define MMC_RSP_136     (1 << 1)                /* 136 bit response */

#define MMC_RSP_CRC     (1 << 2)                /* expect valid crc */

#define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */

#define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */

#define MMC_RSP_NONE    (0)

#define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)

#define MMC_RSP_R1b     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \

                        MMC_RSP_BUSY)

#define MMC_RSP_R2      (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)

#define MMC_RSP_R3      (MMC_RSP_PRESENT)

#define MMC_RSP_R4      (MMC_RSP_PRESENT)

#define MMC_RSP_R5      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)

#define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)

#define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)

#define MMCPART_NOAVAILABLE     (0xff)

#define PART_ACCESS_MASK        (0x7)

#define PART_SUPPORT            (0x1)

struct mmc_cid {

        unsigned long psn;

        unsigned short oid;

        unsigned char mid;

        unsigned char prv;

        unsigned char mdt;

        char pnm[7];

};

struct mmc_cmd {

        ushort cmdidx;

        uint resp_type;

        uint cmdarg;

        uint response[4];

};

struct mmc_data {

        union {

                char *dest;

                const char *src; /* src buffers don't get written to */

        };

        uint flags;

        uint blocks;

        uint blocksize;

};

struct mmc {

//      struct list_head link;

        char name[32];

        void *priv;

        uint voltages;

        uint version;

        uint has_init;

        uint f_min;

        uint f_max;

        int high_capacity;

        uint bus_width;

        uint clock;

        uint card_caps;

        uint host_caps;

        uint ocr;

        uint scr[2];

        uint csd[4];

        uint cid[4];

        ushort rca;

        char part_config;

        char part_num;

        uint tran_speed;

        uint read_bl_len;

        uint write_bl_len;

        uint erase_grp_size;

        size_t capacity;

//      block_dev_desc_t block_dev;

        int (*send_cmd)(struct mmc *mmc,

                        struct mmc_cmd *cmd, struct mmc_data *data);

        void (*set_ios)(struct mmc *mmc);

        int (*init)(struct mmc *mmc);

        int (*getcd)(struct mmc *mmc);

        uint b_max;

};

int mmc_init(struct mmc *mmc);

size_t mmc_bread(struct mmc *mmc, size_t start, size_t blkcnt, void *dst);

void print_mmcinfo(struct mmc *mmc);

#endif /* _MMC_H_ */