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u-boot/include/mmc.h
Simon Glass b8aa463e9b bootstd: mmc: Add a bootdev driver 
Add a bootdev driver for MMC. It mostly just calls the bootdev helper
function.

Add a function to obtain the block device for an MMC controller.

Fix up the comment for mmc_get_blk_desc() while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-04-25 10:00:04 -04:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2008,2010 Freescale Semiconductor, Inc
* Andy Fleming
*
* Based (loosely) on the Linux code
*/
#ifndef _MMC_H_
#define _MMC_H_
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/sizes.h>
#include <linux/compiler.h>
#include <linux/dma-direction.h>
#include <part.h>
struct bd_info;
#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
#define MMC_SUPPORTS_TUNING
#endif
#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
#define MMC_SUPPORTS_TUNING
#endif
/* SD/MMC version bits; 8 flags, 8 major, 8 minor, 8 change */
#define SD_VERSION_SD (1U << 31)
#define MMC_VERSION_MMC (1U << 30)
#define MAKE_SDMMC_VERSION(a, b, c) \
((((u32)(a)) << 16) | ((u32)(b) << 8) | (u32)(c))
#define MAKE_SD_VERSION(a, b, c) \
(SD_VERSION_SD | MAKE_SDMMC_VERSION(a, b, c))
#define MAKE_MMC_VERSION(a, b, c) \
(MMC_VERSION_MMC | MAKE_SDMMC_VERSION(a, b, c))
#define EXTRACT_SDMMC_MAJOR_VERSION(x) \
(((u32)(x) >> 16) & 0xff)
#define EXTRACT_SDMMC_MINOR_VERSION(x) \
(((u32)(x) >> 8) & 0xff)
#define EXTRACT_SDMMC_CHANGE_VERSION(x) \
((u32)(x) & 0xff)
#define SD_VERSION_3 MAKE_SD_VERSION(3, 0, 0)
#define SD_VERSION_2 MAKE_SD_VERSION(2, 0, 0)
#define SD_VERSION_1_0 MAKE_SD_VERSION(1, 0, 0)
#define SD_VERSION_1_10 MAKE_SD_VERSION(1, 10, 0)
#define MMC_VERSION_UNKNOWN MAKE_MMC_VERSION(0, 0, 0)
#define MMC_VERSION_1_2 MAKE_MMC_VERSION(1, 2, 0)
#define MMC_VERSION_1_4 MAKE_MMC_VERSION(1, 4, 0)
#define MMC_VERSION_2_2 MAKE_MMC_VERSION(2, 2, 0)
#define MMC_VERSION_3 MAKE_MMC_VERSION(3, 0, 0)
#define MMC_VERSION_4 MAKE_MMC_VERSION(4, 0, 0)
#define MMC_VERSION_4_1 MAKE_MMC_VERSION(4, 1, 0)
#define MMC_VERSION_4_2 MAKE_MMC_VERSION(4, 2, 0)
#define MMC_VERSION_4_3 MAKE_MMC_VERSION(4, 3, 0)
#define MMC_VERSION_4_4 MAKE_MMC_VERSION(4, 4, 0)
#define MMC_VERSION_4_41 MAKE_MMC_VERSION(4, 4, 1)
#define MMC_VERSION_4_5 MAKE_MMC_VERSION(4, 5, 0)
#define MMC_VERSION_5_0 MAKE_MMC_VERSION(5, 0, 0)
#define MMC_VERSION_5_1 MAKE_MMC_VERSION(5, 1, 0)
#define MMC_CAP(mode) (1 << mode)
#define MMC_MODE_HS (MMC_CAP(MMC_HS) | MMC_CAP(SD_HS))
#define MMC_MODE_HS_52MHz MMC_CAP(MMC_HS_52)
#define MMC_MODE_DDR_52MHz MMC_CAP(MMC_DDR_52)
#define MMC_MODE_HS200 MMC_CAP(MMC_HS_200)
#define MMC_MODE_HS400 MMC_CAP(MMC_HS_400)
#define MMC_MODE_HS400_ES MMC_CAP(MMC_HS_400_ES)
#define MMC_CAP_NONREMOVABLE BIT(14)
#define MMC_CAP_NEEDS_POLL BIT(15)
#define MMC_CAP_CD_ACTIVE_HIGH BIT(16)
#define MMC_MODE_8BIT BIT(30)
#define MMC_MODE_4BIT BIT(29)
#define MMC_MODE_1BIT BIT(28)
#define MMC_MODE_SPI BIT(27)
#define SD_DATA_4BIT 0x00040000
#define IS_SD(x) ((x)->version & SD_VERSION_SD)
#define IS_MMC(x) ((x)->version & MMC_VERSION_MMC)
#define MMC_DATA_READ 1
#define MMC_DATA_WRITE 2
#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_SEND_TUNING_BLOCK 19
#define MMC_CMD_SEND_TUNING_BLOCK_HS200 21
#define MMC_CMD_SET_BLOCK_COUNT 23
#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 MMC_CMD_RES_MAN 62
#define MMC_CMD62_ARG1 0xefac62ec
#define MMC_CMD62_ARG2 0xcbaea7
#define SD_CMD_SEND_RELATIVE_ADDR 3
#define SD_CMD_SWITCH_FUNC 6
#define SD_CMD_SEND_IF_COND 8
#define SD_CMD_SWITCH_UHS18V 11
#define SD_CMD_APP_SET_BUS_WIDTH 6
#define SD_CMD_APP_SD_STATUS 13
#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
static inline bool mmc_is_tuning_cmd(uint cmdidx)
{
if ((cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) ||
(cmdidx == MMC_CMD_SEND_TUNING_BLOCK))
return true;
return false;
}
/* SCR definitions in different words */
#define SD_HIGHSPEED_BUSY 0x00020000
#define SD_HIGHSPEED_SUPPORTED 0x00020000
#define UHS_SDR12_BUS_SPEED 0
#define HIGH_SPEED_BUS_SPEED 1
#define UHS_SDR25_BUS_SPEED 1
#define UHS_SDR50_BUS_SPEED 2
#define UHS_SDR104_BUS_SPEED 3
#define UHS_DDR50_BUS_SPEED 4
#define SD_MODE_UHS_SDR12 BIT(UHS_SDR12_BUS_SPEED)
#define SD_MODE_UHS_SDR25 BIT(UHS_SDR25_BUS_SPEED)
#define SD_MODE_UHS_SDR50 BIT(UHS_SDR50_BUS_SPEED)
#define SD_MODE_UHS_SDR104 BIT(UHS_SDR104_BUS_SPEED)
#define SD_MODE_UHS_DDR50 BIT(UHS_DDR50_BUS_SPEED)
#define OCR_BUSY 0x80000000
#define OCR_HCS 0x40000000
#define OCR_S18R 0x1000000
#define OCR_VOLTAGE_MASK 0x007FFF80
#define OCR_ACCESS_MODE 0x60000000
#define MMC_ERASE_ARG 0x00000000
#define MMC_SECURE_ERASE_ARG 0x80000000
#define MMC_TRIM_ARG 0x00000001
#define MMC_DISCARD_ARG 0x00000003
#define MMC_SECURE_TRIM1_ARG 0x80000001
#define MMC_SECURE_TRIM2_ARG 0x80008000
#define MMC_STATUS_MASK (~0x0206BF7F)
#define MMC_STATUS_SWITCH_ERROR (1 << 7)
#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_STATE_TRANS (4 << 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_ENH_START_ADDR 136 /* R/W */
#define EXT_CSD_ENH_SIZE_MULT 140 /* R/W */
#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
#define EXT_CSD_PARTITION_SETTING 155 /* R/W */
#define EXT_CSD_PARTITIONS_ATTRIBUTE 156 /* R/W */
#define EXT_CSD_MAX_ENH_SIZE_MULT 157 /* R */
#define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
#define EXT_CSD_BKOPS_EN 163 /* R/W & R/W/E */
#define EXT_CSD_WR_REL_PARAM 166 /* R */
#define EXT_CSD_WR_REL_SET 167 /* R/W */
#define EXT_CSD_RPMB_MULT 168 /* RO */
#define EXT_CSD_USER_WP 171 /* R/W & R/W/C_P & R/W/E_P */
#define EXT_CSD_BOOT_WP 173 /* R/W & R/W/C_P */
#define EXT_CSD_BOOT_WP_STATUS 174 /* R */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_BOOT_BUS_WIDTH 177
#define EXT_CSD_PART_CONF 179 /* R/W */
#define EXT_CSD_BUS_WIDTH 183 /* R/W */
#define EXT_CSD_STROBE_SUPPORT 184 /* 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_PART_SWITCH_TIME 199 /* RO */
#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
#define EXT_CSD_BOOT_MULT 226 /* RO */
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
#define EXT_CSD_BKOPS_SUPPORT 502 /* 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_CARD_TYPE_DDR_1_8V (1 << 2)
#define EXT_CSD_CARD_TYPE_DDR_1_2V (1 << 3)
#define EXT_CSD_CARD_TYPE_DDR_52 (EXT_CSD_CARD_TYPE_DDR_1_8V \
| EXT_CSD_CARD_TYPE_DDR_1_2V)
#define EXT_CSD_CARD_TYPE_HS200_1_8V BIT(4) /* Card can run at 200MHz */
/* SDR mode @1.8V I/O */
#define EXT_CSD_CARD_TYPE_HS200_1_2V BIT(5) /* Card can run at 200MHz */
/* SDR mode @1.2V I/O */
#define EXT_CSD_CARD_TYPE_HS200 (EXT_CSD_CARD_TYPE_HS200_1_8V | \
EXT_CSD_CARD_TYPE_HS200_1_2V)
#define EXT_CSD_CARD_TYPE_HS400_1_8V BIT(6)
#define EXT_CSD_CARD_TYPE_HS400_1_2V BIT(7)
#define EXT_CSD_CARD_TYPE_HS400 (EXT_CSD_CARD_TYPE_HS400_1_8V | \
EXT_CSD_CARD_TYPE_HS400_1_2V)
#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 EXT_CSD_DDR_BUS_WIDTH_4 5 /* Card is in 4 bit DDR mode */
#define EXT_CSD_DDR_BUS_WIDTH_8 6 /* Card is in 8 bit DDR mode */
#define EXT_CSD_DDR_FLAG BIT(2) /* Flag for DDR mode */
#define EXT_CSD_BUS_WIDTH_STROBE BIT(7) /* Enhanced strobe mode */
#define EXT_CSD_TIMING_LEGACY 0 /* no high speed */
#define EXT_CSD_TIMING_HS 1 /* HS */
#define EXT_CSD_TIMING_HS200 2 /* HS200 */
#define EXT_CSD_TIMING_HS400 3 /* HS400 */
#define EXT_CSD_DRV_STR_SHIFT 4 /* Driver Strength shift */
#define EXT_CSD_BOOT_ACK_ENABLE (1 << 6)
#define EXT_CSD_BOOT_PARTITION_ENABLE (1 << 3)
#define EXT_CSD_PARTITION_ACCESS_ENABLE (1 << 0)
#define EXT_CSD_PARTITION_ACCESS_DISABLE (0 << 0)
#define EXT_CSD_BOOT_ACK(x) (x << 6)
#define EXT_CSD_BOOT_PART_NUM(x) (x << 3)
#define EXT_CSD_PARTITION_ACCESS(x) (x << 0)
#define EXT_CSD_EXTRACT_BOOT_ACK(x) (((x) >> 6) & 0x1)
#define EXT_CSD_EXTRACT_BOOT_PART(x) (((x) >> 3) & 0x7)
#define EXT_CSD_EXTRACT_PARTITION_ACCESS(x) ((x) & 0x7)
#define EXT_CSD_BOOT_BUS_WIDTH_MODE(x) (x << 3)
#define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
#define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
#define EXT_CSD_PARTITION_SETTING_COMPLETED (1 << 0)
#define EXT_CSD_ENH_USR (1 << 0) /* user data area is enhanced */
#define EXT_CSD_ENH_GP(x) (1 << ((x)+1)) /* GP part (x+1) is enhanced */
#define EXT_CSD_HS_CTRL_REL (1 << 0) /* host controlled WR_REL_SET */
#define EXT_CSD_WR_DATA_REL_USR (1 << 0) /* user data area WR_REL */
#define EXT_CSD_WR_DATA_REL_GP(x) (1 << ((x)+1)) /* GP part (x+1) WR_REL */
#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)
#define ENHNCD_SUPPORT (0x2)
#define PART_ENH_ATTRIB (0x1f)
#define MMC_QUIRK_RETRY_SEND_CID BIT(0)
#define MMC_QUIRK_RETRY_SET_BLOCKLEN BIT(1)
#define MMC_QUIRK_RETRY_APP_CMD BIT(2)
enum mmc_voltage {
MMC_SIGNAL_VOLTAGE_000 = 0,
MMC_SIGNAL_VOLTAGE_120 = 1,
MMC_SIGNAL_VOLTAGE_180 = 2,
MMC_SIGNAL_VOLTAGE_330 = 4,
};
#define MMC_ALL_SIGNAL_VOLTAGE (MMC_SIGNAL_VOLTAGE_120 |\
MMC_SIGNAL_VOLTAGE_180 |\
MMC_SIGNAL_VOLTAGE_330)
/* Maximum block size for MMC */
#define MMC_MAX_BLOCK_LEN 512
/* The number of MMC physical partitions. These consist of:
* boot partitions (2), general purpose partitions (4) in MMC v4.4.
*/
#define MMC_NUM_BOOT_PARTITION 2
#define MMC_PART_RPMB 3 /* RPMB partition number */
/* timing specification used */
#define MMC_TIMING_LEGACY 0
#define MMC_TIMING_MMC_HS 1
#define MMC_TIMING_SD_HS 2
#define MMC_TIMING_UHS_SDR12 3
#define MMC_TIMING_UHS_SDR25 4
#define MMC_TIMING_UHS_SDR50 5
#define MMC_TIMING_UHS_SDR104 6
#define MMC_TIMING_UHS_DDR50 7
#define MMC_TIMING_MMC_DDR52 8
#define MMC_TIMING_MMC_HS200 9
#define MMC_TIMING_MMC_HS400 10
/* Driver model support */
/**
* struct mmc_uclass_priv - Holds information about a device used by the uclass
*/
struct mmc_uclass_priv {
struct mmc *mmc;
};
/**
* mmc_get_mmc_dev() - get the MMC struct pointer for a device
*
* Provided that the device is already probed and ready for use, this value
* will be available.
*
* @dev: Device
* Return: associated mmc struct pointer if available, else NULL
*/
struct mmc *mmc_get_mmc_dev(const struct udevice *dev);
/* End of driver model support */
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;
};
/* forward decl. */
struct mmc;
#if CONFIG_IS_ENABLED(DM_MMC)
struct dm_mmc_ops {
/**
* deferred_probe() - Some configurations that need to be deferred
* to just before enumerating the device
*
* @dev: Device to init
* @return 0 if Ok, -ve if error
*/
int (*deferred_probe)(struct udevice *dev);
/**
* reinit() - Re-initialization to clear old configuration for
* mmc rescan.
*
* @dev: Device to reinit
* @return 0 if Ok, -ve if error
*/
int (*reinit)(struct udevice *dev);
/**
* send_cmd() - Send a command to the MMC device
*
* @dev: Device to receive the command
* @cmd: Command to send
* @data: Additional data to send/receive
* @return 0 if OK, -ve on error
*/
int (*send_cmd)(struct udevice *dev, struct mmc_cmd *cmd,
struct mmc_data *data);
/**
* set_ios() - Set the I/O speed/width for an MMC device
*
* @dev: Device to update
* @return 0 if OK, -ve on error
*/
int (*set_ios)(struct udevice *dev);
/**
* get_cd() - See whether a card is present
*
* @dev: Device to check
* @return 0 if not present, 1 if present, -ve on error
*/
int (*get_cd)(struct udevice *dev);
/**
* get_wp() - See whether a card has write-protect enabled
*
* @dev: Device to check
* @return 0 if write-enabled, 1 if write-protected, -ve on error
*/
int (*get_wp)(struct udevice *dev);
#ifdef MMC_SUPPORTS_TUNING
/**
* execute_tuning() - Start the tuning process
*
* @dev: Device to start the tuning
* @opcode: Command opcode to send
* @return 0 if OK, -ve on error
*/
int (*execute_tuning)(struct udevice *dev, uint opcode);
#endif
/**
* wait_dat0() - wait until dat0 is in the target state
* (CLK must be running during the wait)
*
* @dev: Device to check
* @state: target state
* @timeout_us: timeout in us
* @return 0 if dat0 is in the target state, -ve on error
*/
int (*wait_dat0)(struct udevice *dev, int state, int timeout_us);
#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
/* set_enhanced_strobe() - set HS400 enhanced strobe */
int (*set_enhanced_strobe)(struct udevice *dev);
#endif
/**
* host_power_cycle - host specific tasks in power cycle sequence
* Called between mmc_power_off() and
* mmc_power_on()
*
* @dev: Device to check
* @return 0 if not present, 1 if present, -ve on error
*/
int (*host_power_cycle)(struct udevice *dev);
/**
* get_b_max - get maximum length of single transfer
* Called before reading blocks from the card,
* useful for system which have e.g. DMA limits
* on various memory ranges.
*
* @dev: Device to check
* @dst: Destination buffer in memory
* @blkcnt: Total number of blocks in this transfer
* @return maximum number of blocks for this transfer
*/
int (*get_b_max)(struct udevice *dev, void *dst, lbaint_t blkcnt);
/**
* hs400_prepare_ddr - prepare to switch to DDR mode
*
* @dev: Device to check
* @return 0 if success, -ve on error
*/
int (*hs400_prepare_ddr)(struct udevice *dev);
};
#define mmc_get_ops(dev) ((struct dm_mmc_ops *)(dev)->driver->ops)
/* Transition functions for compatibility */
int mmc_set_ios(struct mmc *mmc);
int mmc_getcd(struct mmc *mmc);
int mmc_getwp(struct mmc *mmc);
int mmc_execute_tuning(struct mmc *mmc, uint opcode);
int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us);
int mmc_set_enhanced_strobe(struct mmc *mmc);
int mmc_host_power_cycle(struct mmc *mmc);
int mmc_deferred_probe(struct mmc *mmc);
int mmc_reinit(struct mmc *mmc);
int mmc_get_b_max(struct mmc *mmc, void *dst, lbaint_t blkcnt);
int mmc_hs400_prepare_ddr(struct mmc *mmc);
#else
struct mmc_ops {
int (*send_cmd)(struct mmc *mmc,
struct mmc_cmd *cmd, struct mmc_data *data);
int (*set_ios)(struct mmc *mmc);
int (*init)(struct mmc *mmc);
int (*getcd)(struct mmc *mmc);
int (*getwp)(struct mmc *mmc);
int (*host_power_cycle)(struct mmc *mmc);
int (*get_b_max)(struct mmc *mmc, void *dst, lbaint_t blkcnt);
};
static inline int mmc_hs400_prepare_ddr(struct mmc *mmc)
{
return 0;
}
#endif
struct mmc_config {
const char *name;
#if !CONFIG_IS_ENABLED(DM_MMC)
const struct mmc_ops *ops;
#endif
uint host_caps;
uint voltages;
uint f_min;
uint f_max;
uint b_max;
unsigned char part_type;
#ifdef CONFIG_MMC_PWRSEQ
struct udevice *pwr_dev;
#endif
};
struct sd_ssr {
unsigned int au; /* In sectors */
unsigned int erase_timeout; /* In milliseconds */
unsigned int erase_offset; /* In milliseconds */
};
enum bus_mode {
MMC_LEGACY,
MMC_HS,
SD_HS,
MMC_HS_52,
MMC_DDR_52,
UHS_SDR12,
UHS_SDR25,
UHS_SDR50,
UHS_DDR50,
UHS_SDR104,
MMC_HS_200,
MMC_HS_400,
MMC_HS_400_ES,
MMC_MODES_END
};
const char *mmc_mode_name(enum bus_mode mode);
void mmc_dump_capabilities(const char *text, uint caps);
static inline bool mmc_is_mode_ddr(enum bus_mode mode)
{
if (mode == MMC_DDR_52)
return true;
#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
else if (mode == UHS_DDR50)
return true;
#endif
#if CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
else if (mode == MMC_HS_400)
return true;
#endif
#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
else if (mode == MMC_HS_400_ES)
return true;
#endif
else
return false;
}
#define UHS_CAPS (MMC_CAP(UHS_SDR12) | MMC_CAP(UHS_SDR25) | \
MMC_CAP(UHS_SDR50) | MMC_CAP(UHS_SDR104) | \
MMC_CAP(UHS_DDR50))
static inline bool supports_uhs(uint caps)
{
#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
return (caps & UHS_CAPS) ? true : false;
#else
return false;
#endif
}
/*
* With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device
* with mmc_get_mmc_dev().
*
* TODO struct mmc should be in mmc_private but it's hard to fix right now
*/
struct mmc {
#if !CONFIG_IS_ENABLED(BLK)
struct list_head link;
#endif
const struct mmc_config *cfg; /* provided configuration */
uint version;
void *priv;
uint has_init;
int high_capacity;
bool clk_disable; /* true if the clock can be turned off */
uint bus_width;
uint clock;
uint saved_clock;
enum mmc_voltage signal_voltage;
uint card_caps;
uint host_caps;
uint ocr;
uint dsr;
uint dsr_imp;
uint scr[2];
uint csd[4];
uint cid[4];
ushort rca;
u8 part_support;
u8 part_attr;
u8 wr_rel_set;
u8 part_config;
u8 gen_cmd6_time; /* units: 10 ms */
u8 part_switch_time; /* units: 10 ms */
uint tran_speed;
uint legacy_speed; /* speed for the legacy mode provided by the card */
uint read_bl_len;
#if CONFIG_IS_ENABLED(MMC_WRITE)
uint write_bl_len;
uint erase_grp_size; /* in 512-byte sectors */
#endif
#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
uint hc_wp_grp_size; /* in 512-byte sectors */
#endif
#if CONFIG_IS_ENABLED(MMC_WRITE)
struct sd_ssr ssr; /* SD status register */
#endif
u64 capacity;
u64 capacity_user;
u64 capacity_boot;
u64 capacity_rpmb;
u64 capacity_gp[4];
#ifndef CONFIG_SPL_BUILD
u64 enh_user_start;
u64 enh_user_size;
#endif
#if !CONFIG_IS_ENABLED(BLK)
struct blk_desc block_dev;
#endif
char op_cond_pending; /* 1 if we are waiting on an op_cond command */
char init_in_progress; /* 1 if we have done mmc_start_init() */
char preinit; /* start init as early as possible */
int ddr_mode;
#if CONFIG_IS_ENABLED(DM_MMC)
struct udevice *dev; /* Device for this MMC controller */
#if CONFIG_IS_ENABLED(DM_REGULATOR)
struct udevice *vmmc_supply; /* Main voltage regulator (Vcc)*/
struct udevice *vqmmc_supply; /* IO voltage regulator (Vccq)*/
#endif
#endif
u8 *ext_csd;
u32 cardtype; /* cardtype read from the MMC */
enum mmc_voltage current_voltage;
enum bus_mode selected_mode; /* mode currently used */
enum bus_mode best_mode; /* best mode is the supported mode with the
* highest bandwidth. It may not always be the
* operating mode due to limitations when
* accessing the boot partitions
*/
u32 quirks;
u8 hs400_tuning;
enum bus_mode user_speed_mode; /* input speed mode from user */
};
#if CONFIG_IS_ENABLED(DM_MMC)
#define mmc_to_dev(_mmc) _mmc->dev
#else
#define mmc_to_dev(_mmc) NULL
#endif
struct mmc_hwpart_conf {
struct {
uint enh_start; /* in 512-byte sectors */
uint enh_size; /* in 512-byte sectors, if 0 no enh area */
unsigned wr_rel_change : 1;
unsigned wr_rel_set : 1;
} user;
struct {
uint size; /* in 512-byte sectors */
unsigned enhanced : 1;
unsigned wr_rel_change : 1;
unsigned wr_rel_set : 1;
} gp_part[4];
};
enum mmc_hwpart_conf_mode {
MMC_HWPART_CONF_CHECK,
MMC_HWPART_CONF_SET,
MMC_HWPART_CONF_COMPLETE,
};
struct mmc *mmc_create(const struct mmc_config *cfg, void *priv);
/**
* mmc_bind() - Set up a new MMC device ready for probing
*
* A child block device is bound with the IF_TYPE_MMC interface type. This
* allows the device to be used with CONFIG_BLK
*
* @dev: MMC device to set up
* @mmc: MMC struct
* @cfg: MMC configuration
* Return: 0 if OK, -ve on error
*/
int mmc_bind(struct udevice *dev, struct mmc *mmc,
const struct mmc_config *cfg);
void mmc_destroy(struct mmc *mmc);
/**
* mmc_unbind() - Unbind a MMC device's child block device
*
* @dev: MMC device
* Return: 0 if OK, -ve on error
*/
int mmc_unbind(struct udevice *dev);
int mmc_initialize(struct bd_info *bis);
int mmc_init_device(int num);
int mmc_init(struct mmc *mmc);
int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error);
int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data);
int mmc_deinit(struct mmc *mmc);
/**
* mmc_of_parse() - Parse the device tree to get the capabilities of the host
*
* @dev: MMC device
* @cfg: MMC configuration
* Return: 0 if OK, -ve on error
*/
int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg);
#ifdef CONFIG_MMC_PWRSEQ
/**
* mmc_pwrseq_get_power() - get a power device from device tree
*
* @dev: MMC device
* @cfg: MMC configuration
* Return: 0 if OK, -ve on error
*/
int mmc_pwrseq_get_power(struct udevice *dev, struct mmc_config *cfg);
#endif
int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
/**
* mmc_voltage_to_mv() - Convert a mmc_voltage in mV
*
* @voltage: The mmc_voltage to convert
* Return: the value in mV if OK, -EINVAL on error (invalid mmc_voltage value)
*/
int mmc_voltage_to_mv(enum mmc_voltage voltage);
/**
* mmc_set_clock() - change the bus clock
* @mmc: MMC struct
* @clock: bus frequency in Hz
* @disable: flag indicating if the clock must on or off
* Return: 0 if OK, -ve on error
*/
int mmc_set_clock(struct mmc *mmc, uint clock, bool disable);
#define MMC_CLK_ENABLE false
#define MMC_CLK_DISABLE true
struct mmc *find_mmc_device(int dev_num);
int mmc_set_dev(int dev_num);
void print_mmc_devices(char separator);
/**
* get_mmc_num() - get the total MMC device number
*
* Return: 0 if there is no MMC device, else the number of devices
*/
int get_mmc_num(void);
int mmc_switch_part(struct mmc *mmc, unsigned int part_num);
int mmc_hwpart_config(struct mmc *mmc, const struct mmc_hwpart_conf *conf,
enum mmc_hwpart_conf_mode mode);
#if !CONFIG_IS_ENABLED(DM_MMC)
int mmc_getcd(struct mmc *mmc);
int board_mmc_getcd(struct mmc *mmc);
int mmc_getwp(struct mmc *mmc);
int board_mmc_getwp(struct mmc *mmc);
#endif
int mmc_set_dsr(struct mmc *mmc, u16 val);
/* Function to change the size of boot partition and rpmb partitions */
int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
unsigned long rpmbsize);
/* Function to modify the PARTITION_CONFIG field of EXT_CSD */
int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
/* Function to modify the BOOT_BUS_WIDTH field of EXT_CSD */
int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
/* Function to modify the RST_n_FUNCTION field of EXT_CSD */
int mmc_set_rst_n_function(struct mmc *mmc, u8 enable);
/* Functions to read / write the RPMB partition */
int mmc_rpmb_set_key(struct mmc *mmc, void *key);
int mmc_rpmb_get_counter(struct mmc *mmc, unsigned long *counter);
int mmc_rpmb_read(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
/**
* mmc_rpmb_route_frames() - route RPMB data frames
* @mmc Pointer to a MMC device struct
* @req Request data frames
* @reqlen Length of data frames in bytes
* @rsp Supplied buffer for response data frames
* @rsplen Length of supplied buffer for response data frames
*
* The RPMB data frames are routed to/from some external entity, for
* example a Trusted Exectuion Environment in an arm TrustZone protected
* secure world. It's expected that it's the external entity who is in
* control of the RPMB key.
*
* Returns 0 on success, < 0 on error.
*/
int mmc_rpmb_route_frames(struct mmc *mmc, void *req, unsigned long reqlen,
void *rsp, unsigned long rsplen);
#ifdef CONFIG_CMD_BKOPS_ENABLE
int mmc_set_bkops_enable(struct mmc *mmc);
#endif
/**
* Start device initialization and return immediately; it does not block on
* polling OCR (operation condition register) status. Useful for checking
* the presence of SD/eMMC when no card detect logic is available.
*
* @param mmc Pointer to a MMC device struct
* @param quiet Be quiet, do not print error messages when card is not detected.
* Return: 0 on success, <0 on error.
*/
int mmc_get_op_cond(struct mmc *mmc, bool quiet);
/**
* Start device initialization and return immediately; it does not block on
* polling OCR (operation condition register) status. Then you should call
* mmc_init, which would block on polling OCR status and complete the device
* initializatin.
*
* @param mmc Pointer to a MMC device struct
* Return: 0 on success, <0 on error.
*/
int mmc_start_init(struct mmc *mmc);
/**
* Set preinit flag of mmc device.
*
* This will cause the device to be pre-inited during mmc_initialize(),
* which may save boot time if the device is not accessed until later.
* Some eMMC devices take 200-300ms to init, but unfortunately they
* must be sent a series of commands to even get them to start preparing
* for operation.
*
* @param mmc Pointer to a MMC device struct
* @param preinit preinit flag value
*/
void mmc_set_preinit(struct mmc *mmc, int preinit);
#ifdef CONFIG_MMC_SPI
#define mmc_host_is_spi(mmc) ((mmc)->cfg->host_caps & MMC_MODE_SPI)
#else
#define mmc_host_is_spi(mmc) 0
#endif
#define mmc_dev(x) ((x)->dev)
void board_mmc_power_init(void);
int board_mmc_init(struct bd_info *bis);
int cpu_mmc_init(struct bd_info *bis);
int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr);
# ifdef CONFIG_SYS_MMC_ENV_PART
extern uint mmc_get_env_part(struct mmc *mmc);
# endif
int mmc_get_env_dev(void);
/* Minimum partition switch timeout in units of 10-milliseconds */
#define MMC_MIN_PART_SWITCH_TIME 30 /* 300 ms */
/* Set block count limit because of 16 bit register limit on some hardware*/
#ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
#define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
#endif
/**
* mmc_get_blk_desc() - Get the block descriptor for an MMC device
*
* @mmc: MMC device
* Return: block descriptor if found, else NULL
*/
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
/**
* mmc_get_blk() - Get the block device for an MMC device
*
* @dev: MMC device
* @blkp: Returns pointer to probed block device on sucesss
*
* Return: 0 on success, -ve on error
*/
int mmc_get_blk(struct udevice *dev, struct udevice **blkp);
/**
* mmc_send_ext_csd() - read the extended CSD register
*
* @mmc: MMC device
* @ext_csd a cache aligned buffer of length MMC_MAX_BLOCK_LEN allocated by
* the caller, e.g. using
* ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN)
* Return: 0 for success
*/
int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd);
/**
* mmc_boot_wp() - power on write protect boot partitions
*
* The boot partitions are write protected until the next power cycle.
*
* Return: 0 for success
*/
int mmc_boot_wp(struct mmc *mmc);
static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
{
return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
}
#endif /* _MMC_H_ */
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