path: root/drivers/renesas/common/emmc/emmc_std.h

/*
 * Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef EMMC_STD_H
#define EMMC_STD_H

#include "emmc_hal.h"

#ifndef FALSE
#define FALSE	0U
#endif
#ifndef TRUE
#define TRUE	1U
#endif

/* 64bit registers */
#define SETR_64(r, v)			(*(volatile uint64_t *)(r) = (v))
#define GETR_64(r)			(*(volatile uint64_t *)(r))

/* 32bit registers */
#define SETR_32(r, v)			(*(volatile uint32_t *)(r) = (v))
#define GETR_32(r)			(*(volatile uint32_t *)(r))

/* 16bit registers */
#define SETR_16(r, v)			(*(volatile uint16_t *)(r) = (v))
#define GETR_16(r)			(*(volatile uint16_t *)(r))

/* 8bit registers */
#define SETR_8(r, v)			(*(volatile uint8_t *)(r) = (v))
#define GETR_8(r)			(*(volatile uint8_t *)(r))

/* CSD register Macros */
#define EMMC_GET_CID(x, y)	(emmc_bit_field(mmc_drv_obj.cid_data, (x), (y)))

#define EMMC_CID_MID()			(EMMC_GET_CID(127, 120))
#define EMMC_CID_CBX()			(EMMC_GET_CID(113, 112))
#define EMMC_CID_OID()			(EMMC_GET_CID(111, 104))
#define EMMC_CID_PNM1()			(EMMC_GET_CID(103, 88))
#define EMMC_CID_PNM2()			(EMMC_GET_CID(87, 56))
#define EMMC_CID_PRV()			(EMMC_GET_CID(55, 48))
#define EMMC_CID_PSN()			(EMMC_GET_CID(47, 16))
#define EMMC_CID_MDT()			(EMMC_GET_CID(15, 8))
#define EMMC_CID_CRC()			(EMMC_GET_CID(7, 1))

/* CSD register Macros */
#define EMMC_GET_CSD(x, y)	(emmc_bit_field(mmc_drv_obj.csd_data, (x), (y)))

#define EMMC_CSD_CSD_STRUCTURE()	(EMMC_GET_CSD(127, 126))
#define EMMC_CSD_SPEC_VARS()		(EMMC_GET_CSD(125, 122))
#define EMMC_CSD_TAAC()			(EMMC_GET_CSD(119, 112))
#define EMMC_CSD_NSAC()			(EMMC_GET_CSD(111, 104))
#define EMMC_CSD_TRAN_SPEED()		(EMMC_GET_CSD(103, 96))
#define EMMC_CSD_CCC()			(EMMC_GET_CSD(95, 84))
#define EMMC_CSD_READ_BL_LEN()		(EMMC_GET_CSD(83, 80))
#define EMMC_CSD_READ_BL_PARTIAL()	(EMMC_GET_CSD(79, 79))
#define EMMC_CSD_WRITE_BLK_MISALIGN()	(EMMC_GET_CSD(78, 78))
#define EMMC_CSD_READ_BLK_MISALIGN()	(EMMC_GET_CSD(77, 77))
#define EMMC_CSD_DSR_IMP()		(EMMC_GET_CSD(76, 76))
#define EMMC_CSD_C_SIZE()		(EMMC_GET_CSD(73, 62))
#define EMMC_CSD_VDD_R_CURR_MIN()	(EMMC_GET_CSD(61, 59))
#define EMMC_CSD_VDD_R_CURR_MAX()	(EMMC_GET_CSD(58, 56))
#define EMMC_CSD_VDD_W_CURR_MIN()	(EMMC_GET_CSD(55, 53))
#define EMMC_CSD_VDD_W_CURR_MAX()	(EMMC_GET_CSD(52, 50))
#define EMMC_CSD_C_SIZE_MULT()		(EMMC_GET_CSD(49, 47))
#define EMMC_CSD_ERASE_GRP_SIZE()	(EMMC_GET_CSD(46, 42))
#define EMMC_CSD_ERASE_GRP_MULT()	(EMMC_GET_CSD(41, 37))
#define EMMC_CSD_WP_GRP_SIZE()		(EMMC_GET_CSD(36, 32))
#define EMMC_CSD_WP_GRP_ENABLE()	(EMMC_GET_CSD(31, 31))
#define EMMC_CSD_DEFALT_ECC()		(EMMC_GET_CSD(30, 29))
#define EMMC_CSD_R2W_FACTOR()		(EMMC_GET_CSD(28, 26))
#define EMMC_CSD_WRITE_BL_LEN()		(EMMC_GET_CSD(25, 22))
#define EMMC_CSD_WRITE_BL_PARTIAL()	(EMMC_GET_CSD(21, 21))
#define EMMC_CSD_CONTENT_PROT_APP()	(EMMC_GET_CSD(16, 16))
#define EMMC_CSD_FILE_FORMAT_GRP()	(EMMC_GET_CSD(15, 15))
#define EMMC_CSD_COPY()			(EMMC_GET_CSD(14, 14))
#define EMMC_CSD_PERM_WRITE_PROTECT()	(EMMC_GET_CSD(13, 13))
#define EMMC_CSD_TMP_WRITE_PROTECT()	(EMMC_GET_CSD(12, 12))
#define EMMC_CSD_FILE_FORMAT()		(EMMC_GET_CSD(11, 10))
#define EMMC_CSD_ECC()			(EMMC_GET_CSD(9, 8))
#define EMMC_CSD_CRC()			(EMMC_GET_CSD(7, 1))

/* sector access */
#define EMMC_4B_BOUNDARY_CHECK_MASK	0x00000003
#define EMMC_SECTOR_SIZE_SHIFT		9U	/* 512 = 2^9 */
#define EMMC_SECTOR_SIZE		512
#define EMMC_BLOCK_LENGTH		512
#define EMMC_BLOCK_LENGTH_DW		128
#define EMMC_BUF_SIZE_SHIFT		3U	/* 8byte = 2^3 */

/* eMMC specification clock */
#define EMMC_CLOCK_SPEC_400K		400000UL	 /* initialize clock 400KHz */
#define EMMC_CLOCK_SPEC_20M		20000000UL	 /* normal speed 20MHz */
#define EMMC_CLOCK_SPEC_26M		26000000UL	 /* high speed 26MHz */
#define EMMC_CLOCK_SPEC_52M		52000000UL	 /* high speed 52MHz */
#define EMMC_CLOCK_SPEC_100M		100000000UL	 /* high speed 100MHz */

/* EMMC driver error code. (extended HAL_MEMCARD_RETURN) */
typedef enum {
	EMMC_ERR = 0,				/* unknown error */
	EMMC_SUCCESS,				/* OK */
	EMMC_ERR_FROM_DMAC,			/* DMAC allocation error */
	EMMC_ERR_FROM_DMAC_TRANSFER,		/* DMAC transfer error */
	EMMC_ERR_CARD_STATUS_BIT,		/* card status error */
	EMMC_ERR_CMD_TIMEOUT,			/* command timeout error */
	EMMC_ERR_DATA_TIMEOUT,			/* data timeout error */
	EMMC_ERR_CMD_CRC,			/* command CRC error */
	EMMC_ERR_DATA_CRC,			/* data CRC error */
	EMMC_ERR_PARAM,				/* parameter error */
	EMMC_ERR_RESPONSE,			/* response error */
	EMMC_ERR_RESPONSE_BUSY,			/* response busy error */
	EMMC_ERR_TRANSFER,			/* data transfer error */
	EMMC_ERR_READ_SECTOR,			/* read sector error */
	EMMC_ERR_WRITE_SECTOR,			/* write sector error */
	EMMC_ERR_STATE,				/* state error */
	EMMC_ERR_TIMEOUT,			/* timeout error */
	EMMC_ERR_ILLEGAL_CARD,			/* illegal card */
	EMMC_ERR_CARD_BUSY,			/* Busy state */
	EMMC_ERR_CARD_STATE,			/* card state error */
	EMMC_ERR_SET_TRACE,			/* trace information error */
	EMMC_ERR_FROM_TIMER,			/* Timer error */
	EMMC_ERR_FORCE_TERMINATE,		/* Force terminate */
	EMMC_ERR_CARD_POWER,			/* card power fail */
	EMMC_ERR_ERASE_SECTOR,			/* erase sector error */
	EMMC_ERR_INFO2				/* exec cmd error info2 */
} EMMC_ERROR_CODE;

/* Function number */
#define EMMC_FUNCNO_NONE				0U
#define EMMC_FUNCNO_DRIVER_INIT				1U
#define EMMC_FUNCNO_CARD_POWER_ON			2U
#define EMMC_FUNCNO_MOUNT				3U
#define EMMC_FUNCNO_CARD_INIT				4U
#define EMMC_FUNCNO_HIGH_SPEED				5U
#define EMMC_FUNCNO_BUS_WIDTH				6U
#define EMMC_FUNCNO_MULTI_BOOT_SELECT_PARTITION		7U
#define EMMC_FUNCNO_MULTI_BOOT_READ_SECTOR		8U
#define EMMC_FUNCNO_TRANS_DATA_READ_SECTOR		9U
#define EMMC_FUNCNO_UBOOT_IMAGE_SELECT_PARTITION	10U
#define EMMC_FUNCNO_UBOOT_IMAGE_READ_SECTOR		11U
#define EMMC_FUNCNO_SET_CLOCK				12U
#define EMMC_FUNCNO_EXEC_CMD				13U
#define EMMC_FUNCNO_READ_SECTOR				14U
#define EMMC_FUNCNO_WRITE_SECTOR			15U
#define EMMC_FUNCNO_ERASE_SECTOR			16U
#define EMMC_FUNCNO_GET_PERTITION_ACCESS		17U
/*
 * Response
 * R1
 * Type 'E' bit and bit14(must be 0). ignore bit22
 */
#define EMMC_R1_ERROR_MASK			0xFDBFE080U
/* Ignore bit23 (Not check CRC error) */
#define EMMC_R1_ERROR_MASK_WITHOUT_CRC		(0xFD3FE080U)
#define EMMC_R1_STATE_MASK			0x00001E00U	/* [12:9] */
#define EMMC_R1_READY				0x00000100U	/* bit8 */
#define EMMC_R1_STATE_SHIFT			9

/* R4 */
#define EMMC_R4_RCA_MASK			0xFFFF0000UL
#define EMMC_R4_STATUS				0x00008000UL

/* CSD */
#define EMMC_TRANSPEED_FREQ_UNIT_MASK		0x07	/* bit[2:0] */
#define EMMC_TRANSPEED_FREQ_UNIT_SHIFT		0
#define EMMC_TRANSPEED_MULT_MASK		0x78	/* bit[6:3] */
#define EMMC_TRANSPEED_MULT_SHIFT		3

/* OCR */
#define EMMC_HOST_OCR_VALUE			0x40FF8080
#define EMMC_OCR_STATUS_BIT			0x80000000L	/* Card power up status bit */
#define EMMC_OCR_ACCESS_MODE_MASK		0x60000000L	/* bit[30:29] */
#define EMMC_OCR_ACCESS_MODE_SECT		0x40000000L
#define EMMC_OCR_ACCESS_MODE_BYTE		0x00000000L

/* EXT_CSD */
#define EMMC_EXT_CSD_S_CMD_SET				504
#define EMMC_EXT_CSD_INI_TIMEOUT_AP			241
#define EMMC_EXT_CSD_PWR_CL_DDR_52_360			239
#define EMMC_EXT_CSD_PWR_CL_DDR_52_195			238
#define EMMC_EXT_CSD_MIN_PERF_DDR_W_8_52		235
#define EMMC_EXT_CSD_MIN_PERF_DDR_R_8_52		234
#define EMMC_EXT_CSD_TRIM_MULT				232
#define EMMC_EXT_CSD_SEC_FEATURE_SUPPORT		231
#define EMMC_EXT_CSD_SEC_ERASE_MULT			229
#define EMMC_EXT_CSD_BOOT_INFO				228
#define EMMC_EXT_CSD_BOOT_SIZE_MULTI			226
#define EMMC_EXT_CSD_ACC_SIZE				225
#define EMMC_EXT_CSD_HC_ERASE_GRP_SIZE			224
#define EMMC_EXT_CSD_ERASE_TIMEOUT_MULT			223
#define EMMC_EXT_CSD_PEL_WR_SEC_C			222
#define EMMC_EXT_CSD_HC_WP_GRP_SIZE			221
#define EMMC_EXT_CSD_S_C_VCC				220
#define EMMC_EXT_CSD_S_C_VCCQ				219
#define EMMC_EXT_CSD_S_A_TIMEOUT			217
#define EMMC_EXT_CSD_SEC_COUNT				215
#define EMMC_EXT_CSD_MIN_PERF_W_8_52			210
#define EMMC_EXT_CSD_MIN_PERF_R_8_52			209
#define EMMC_EXT_CSD_MIN_PERF_W_8_26_4_52		208
#define EMMC_EXT_CSD_MIN_PERF_R_8_26_4_52		207
#define EMMC_EXT_CSD_MIN_PERF_W_4_26			206
#define EMMC_EXT_CSD_MIN_PERF_R_4_26			205
#define EMMC_EXT_CSD_PWR_CL_26_360			203
#define EMMC_EXT_CSD_PWR_CL_52_360			202
#define EMMC_EXT_CSD_PWR_CL_26_195			201
#define EMMC_EXT_CSD_PWR_CL_52_195			200
#define EMMC_EXT_CSD_CARD_TYPE				196
#define EMMC_EXT_CSD_CSD_STRUCTURE			194
#define EMMC_EXT_CSD_EXT_CSD_REV			192
#define EMMC_EXT_CSD_CMD_SET				191
#define EMMC_EXT_CSD_CMD_SET_REV			189
#define EMMC_EXT_CSD_POWER_CLASS			187
#define EMMC_EXT_CSD_HS_TIMING				185
#define EMMC_EXT_CSD_BUS_WIDTH				183
#define EMMC_EXT_CSD_ERASED_MEM_CONT			181
#define EMMC_EXT_CSD_PARTITION_CONFIG			179
#define EMMC_EXT_CSD_BOOT_CONFIG_PROT			178
#define EMMC_EXT_CSD_BOOT_BUS_WIDTH			177
#define EMMC_EXT_CSD_ERASE_GROUP_DEF			175
#define EMMC_EXT_CSD_BOOT_WP				173
#define EMMC_EXT_CSD_USER_WP				171
#define EMMC_EXT_CSD_FW_CONFIG				169
#define EMMC_EXT_CSD_RPMB_SIZE_MULT			168
#define EMMC_EXT_CSD_RST_n_FUNCTION			162
#define EMMC_EXT_CSD_PARTITIONING_SUPPORT		160
#define EMMC_EXT_CSD_MAX_ENH_SIZE_MULT			159
#define EMMC_EXT_CSD_PARTITIONS_ATTRIBUTE		156
#define EMMC_EXT_CSD_PARTITION_SETTING_COMPLETED	155
#define EMMC_EXT_CSD_GP_SIZE_MULT			154
#define EMMC_EXT_CSD_ENH_SIZE_MULT			142
#define EMMC_EXT_CSD_ENH_START_ADDR			139
#define EMMC_EXT_CSD_SEC_BAD_BLK_MGMNT			134

#define EMMC_EXT_CSD_CARD_TYPE_26MHZ			0x01
#define EMMC_EXT_CSD_CARD_TYPE_52MHZ			0x02
#define EMMC_EXT_CSD_CARD_TYPE_DDR_52MHZ_12V		0x04
#define EMMC_EXT_CSD_CARD_TYPE_DDR_52MHZ_18V		0x08
#define EMMC_EXT_CSD_CARD_TYPE_52MHZ_MASK		0x0e

/* SWITCH (CMD6) argument */
#define EXTCSD_ACCESS_BYTE	(BIT25 | BIT24)
#define EXTCSD_SET_BITS		BIT24

#define HS_TIMING_ADD		(185 << 16)	/* H'b9 */
#define HS_TIMING_1		(1 << 8)
#define HS_TIMING_HS200		(2 << 8)
#define HS_TIMING_HS400		(3 << 8)

#define BUS_WIDTH_ADD		(183 << 16)	/* H'b7 */
#define BUS_WIDTH_1		(0 << 8)
#define BUS_WIDTH_4		(1 << 8)
#define BUS_WIDTH_8		(2 << 8)
#define BUS_WIDTH_4DDR		(5 << 8)
#define BUS_WIDTH_8DDR		(6 << 8)

#define EMMC_SWITCH_HS_TIMING		(EXTCSD_ACCESS_BYTE | HS_TIMING_ADD |\
					 HS_TIMING_1)		/* H'03b90100 */
#define EMMC_SWITCH_HS_TIMING_OFF	(EXTCSD_ACCESS_BYTE |\
					 HS_TIMING_ADD)		/* H'03b90000 */

#define EMMC_SWITCH_BUS_WIDTH_1		(EXTCSD_ACCESS_BYTE | BUS_WIDTH_ADD |\
					 BUS_WIDTH_1)		/* H'03b70000 */
#define EMMC_SWITCH_BUS_WIDTH_4		(EXTCSD_ACCESS_BYTE | BUS_WIDTH_ADD |\
					 BUS_WIDTH_4)		/* H'03b70100 */
#define EMMC_SWITCH_BUS_WIDTH_8		(EXTCSD_ACCESS_BYTE | BUS_WIDTH_ADD |\
					 BUS_WIDTH_8)		/* H'03b70200 */
#define EMMC_SWITCH_BUS_WIDTH_4DDR	(EXTCSD_ACCESS_BYTE | BUS_WIDTH_ADD |\
					 BUS_WIDTH_4DDR)	/* H'03b70500 */
#define EMMC_SWITCH_BUS_WIDTH_8DDR	(EXTCSD_ACCESS_BYTE | BUS_WIDTH_ADD |\
					 BUS_WIDTH_8DDR)	/* H'03b70600 */
/* Partition config = 0x00 */
#define EMMC_SWITCH_PARTITION_CONFIG	0x03B30000UL

#define TIMING_HIGH_SPEED		1UL
#define EMMC_BOOT_PARTITION_EN_MASK	0x38U
#define EMMC_BOOT_PARTITION_EN_SHIFT	3U

/* Bus width */
#define EMMC_BUSWIDTH_1BIT		CE_CMD_SET_DATW_1BIT
#define EMMC_BUSWIDTH_4BIT		CE_CMD_SET_DATW_4BIT
#define EMMC_BUSWIDTH_8BIT		CE_CMD_SET_DATW_8BIT

/* for st_mmc_base */
#define EMMC_MAX_RESPONSE_LENGTH	17
#define EMMC_MAX_CID_LENGTH		16
#define EMMC_MAX_CSD_LENGTH		16
#define EMMC_MAX_EXT_CSD_LENGTH		512U
#define EMMC_RES_REG_ALIGNED		4U
#define EMMC_BUF_REG_ALIGNED		8U

/* TAAC mask */
#define TAAC_TIME_UNIT_MASK		(0x07)
#define TAAC_MULTIPLIER_FACTOR_MASK	(0x0F)

/* Partition id */
typedef enum {
	PARTITION_ID_USER = 0x0,	/* User Area */
	PARTITION_ID_BOOT_1 = 0x1,	/* boot partition 1 */
	PARTITION_ID_BOOT_2 = 0x2,	/* boot partition 2 */
	PARTITION_ID_RPMB = 0x3,	/* Replay Protected Memory Block */
	PARTITION_ID_GP_1 = 0x4,	/* General Purpose partition 1 */
	PARTITION_ID_GP_2 = 0x5,	/* General Purpose partition 2 */
	PARTITION_ID_GP_3 = 0x6,	/* General Purpose partition 3 */
	PARTITION_ID_GP_4 = 0x7,	/* General Purpose partition 4 */
	PARTITION_ID_MASK = 0x7		/* [2:0] */
} EMMC_PARTITION_ID;

/* card state in R1 response [12:9] */
typedef enum {
	EMMC_R1_STATE_IDLE = 0,
	EMMC_R1_STATE_READY,
	EMMC_R1_STATE_IDENT,
	EMMC_R1_STATE_STBY,
	EMMC_R1_STATE_TRAN,
	EMMC_R1_STATE_DATA,
	EMMC_R1_STATE_RCV,
	EMMC_R1_STATE_PRG,
	EMMC_R1_STATE_DIS,
	EMMC_R1_STATE_BTST,
	EMMC_R1_STATE_SLEP
} EMMC_R1_STATE;

typedef enum {
	ESTATE_BEGIN = 0,
	ESTATE_ISSUE_CMD,
	ESTATE_NON_RESP_CMD,
	ESTATE_RCV_RESP,
	ESTATE_RCV_RESPONSE_BUSY,
	ESTATE_CHECK_RESPONSE_COMPLETE,
	ESTATE_DATA_TRANSFER,
	ESTATE_DATA_TRANSFER_COMPLETE,
	ESTATE_ACCESS_END,
	ESTATE_TRANSFER_ERROR,
	ESTATE_ERROR,
	ESTATE_END
} EMMC_INT_STATE;

/* eMMC boot driver error information */
typedef struct {
	uint16_t num;			/* error no */
	uint16_t code;			/* error code */

	volatile uint32_t info1;	/* SD_INFO1. (hw dependent) */
	volatile uint32_t info2;	/* SD_INFO2. (hw dependent) */
	volatile uint32_t status1;	/* SD_ERR_STS1. (hw dependent) */
	volatile uint32_t status2;	/* SD_ERR_STS2. (hw dependent) */
	volatile uint32_t dm_info1;	/* DM_CM_INFO1. (hw dependent) */
	volatile uint32_t dm_info2;	/* DM_CM_INFO2. (hw dependent) */
} st_error_info;

/* Command information */
typedef struct {
	HAL_MEMCARD_COMMAND cmd;	/* Command information */
	uint32_t arg;			/* argument */
	HAL_MEMCARD_OPERATION dir;	/* direction */
	uint32_t hw;			/* SD_CMD register value. */
} st_command_info;

/* MMC driver base */
typedef struct {
	st_error_info error_info;	/* error information */
	st_command_info cmd_info;	/* command information */

	/* for data transfer */
	uint32_t *buff_address_virtual;		/* Dest or Src buff */
	uint32_t *buff_address_physical;	/* Dest or Src buff */
	HAL_MEMCARD_DATA_WIDTH bus_width;	/* bus width */

	uint32_t trans_size;		/* transfer size for this command */
	uint32_t remain_size;		/* remain size for this command */
	uint32_t response_length;	/* response length for this command */
	uint32_t sector_size;		/* sector_size */

	/* clock */
	uint32_t base_clock;		/* MMC host controller clock */
	/*
	 * Max freq (Card Spec)[Hz]. It changes dynamically by CSD and
	 * EXT_CSD.
	 */
	uint32_t max_freq;
	/* request freq [Hz] (400K, 26MHz, 52MHz, etc) */
	uint32_t request_freq;
	/* current MMC clock[Hz] (the closest frequency supported by HW) */
	uint32_t current_freq;

	/* state flag */
	/* presence status of the memory card */
	HAL_MEMCARD_PRESENCE_STATUS card_present;

	uint32_t card_power_enable;
	uint32_t clock_enable;
	/* True : initialize complete. */
	uint32_t initialize;
	/* True : sector access, FALSE : byte access */
	uint32_t access_mode;
	/* True : mount complete. */
	uint32_t mount;
	/* True : selected card. */
	uint32_t selected;
	/* 0: DMA, 1:PIO */
	HAL_MEMCARD_DATA_TRANSFER_MODE transfer_mode;

	/* loaded ISSW image No. ISSW have copy image. */
	uint32_t image_num;
	/* card state */
	EMMC_R1_STATE current_state;
	/* True : during command processing */
	volatile uint32_t during_cmd_processing;
	/* True : during transfer */
	volatile uint32_t during_transfer;
	/* True : during transfer (DMA) */
	volatile uint32_t during_dma_transfer;
	/* True : occurred DMAC error */
	volatile uint32_t dma_error_flag;
	/* force terminate flag */
	volatile uint32_t force_terminate;
	/* state machine blocking flag : True or False */
	volatile uint32_t state_machine_blocking;
	/* True : get partition access processing */
	volatile uint32_t get_partition_access_flag;

	EMMC_PARTITION_ID boot_partition_en;	/* Boot partition */
	EMMC_PARTITION_ID partition_access;	/* Current access partition */

	/* timeout */
	uint32_t hs_timing;

	/* read and write data timeout */
	uint32_t data_timeout;

	/* retry */
	uint32_t retries_after_fail;

	/* interrupt */
	volatile uint32_t int_event1;	/* interrupt SD_INFO1 Event */
	volatile uint32_t int_event2;	/* interrupt SD_INFO2 Event */
	volatile uint32_t dm_event1;	/* interrupt DM_CM_INFO1 Event */
	volatile uint32_t dm_event2;	/* interrupt DM_CM_INFO2 Event */

	/* response */
	uint32_t *response;		/* buffer ptr for executing command. */
	uint32_t r1_card_status;	/* R1 response data */
	uint32_t r3_ocr;		/* R3 response data */
	uint32_t r4_resp;		/* R4 response data */
	uint32_t r5_resp;		/* R5 response data */

	/* True : clock mode is low. (MMC clock = Max26MHz) */
	uint32_t low_clock_mode_enable;

	uint32_t reserved2;
	uint32_t reserved3;
	uint32_t reserved4;

	/* CSD registers (4byte align) */
	uint8_t csd_data[EMMC_MAX_CSD_LENGTH]			/* CSD */
	    __attribute__ ((aligned(EMMC_RES_REG_ALIGNED)));
	/* CID registers (4byte align) */
	uint8_t cid_data[EMMC_MAX_CID_LENGTH]			/* CID */
	    __attribute__ ((aligned(EMMC_RES_REG_ALIGNED)));
	/* EXT CSD registers (8byte align) */
	uint8_t ext_csd_data[EMMC_MAX_EXT_CSD_LENGTH]		/* EXT_CSD */
	    __attribute__ ((aligned(EMMC_BUF_REG_ALIGNED)));
	/* Response registers (4byte align) */
	uint8_t response_data[EMMC_MAX_RESPONSE_LENGTH]		/* other response */
	    __attribute__ ((aligned(EMMC_RES_REG_ALIGNED)));
} st_mmc_base;

typedef int (*func) (void);

uint32_t emmc_get_csd_time(void);

#define MMC_DEBUG
#endif /* EMMC_STD_H */