Unit MMC

Return to Unit Reference

Description

---

Ultibo MMC/SD interface unit

This unit implements the standards based part of the SD/MMC specification including the standard SDHCI interfaces.

For each platform a SDHCI module needs to be provided that implements the platform specific parts of the SDHCI interface.

This is similar in model to USB and other interfaces in Ultibo, where the generic interface unit requires a platform specific module to register with it in order to communicate with platform specific devices.

The SD/MMC interfaces are 2 tier (ie Host and Device) whereas the USB interface is 3 tier (Host, Device and Driver).

Constants

---

MMC specific constants MMC_*

MMC_NAME_PREFIX = 'MMC';	Name prefix for MMC Devices
MMC_DEVICE_DESCRIPTION = 'MMC/SD Device';	Description of MMC/SD device
MMC_STORAGE_DESCRIPTION = 'MMC/SD Storage Device';	Description of MMC/SD storage device
MMC_STATUS_TIMER_INTERVAL = 1000;
MMC_DEFAULT_BLOCKSIZE = 512;
MMC_DEFAULT_BLOCKSHIFT = 9;

MMC device type MMC_TYPE_*

MMC_TYPE_NONE = 0;
MMC_TYPE_MMC = 1;	An MMC specification card
MMC_TYPE_SD = 2;	An SD specification card
MMC_TYPE_SDIO = 3;	An SDIO specification card
MMC_TYPE_SD_COMBO = 4;	An SD/SDIO combination card
MMC_TYPE_MAX = 4;

MMC device state MMC_STATE_*

MMC_STATE_EJECTED = 0;
MMC_STATE_INSERTED = 1;
MMC_STATE_MAX = 1;

MMC device flag MMC_FLAG_*

MMC_FLAG_NONE = $00000000;
MMC_FLAG_CARD_PRESENT = $00000001;
MMC_FLAG_WRITE_PROTECT = $00000002;
MMC_FLAG_HIGH_CAPACITY = $00000004;	High Capacity (SDHC)
MMC_FLAG_EXT_CAPACITY = $00000008;	Extended Capacity (SDXC)
MMC_FLAG_UHS_I = $00000010;	Ultra High Speed (UHS-I)
MMC_FLAG_UHS_II = $00000020;	Ultra High Speed (UHS-II)
MMC_FLAG_BLOCK_ADDRESSED = $00000040;	Block Addressed (SDHC/SDXC and others)
MMC_FLAG_AUTO_BLOCK_COUNT = $00000080;	Auto CMD23 (Set Block Count)
MMC_FLAG_AUTO_COMMAND_STOP = $00000100;	Auto CMD12 (Stop Transmission)
MMC_FLAG_DDR_MODE = $00000200;
MMC_FLAG_NON_REMOVABLE = $00000400;	Device is non removable, only check for presence once.

MMC/SD status code MMC_STATUS_*

MMC_STATUS_SUCCESS = 0;	Function successful
MMC_STATUS_TIMEOUT = 1;	The operation timed out
MMC_STATUS_NO_MEDIA = 2;	No media present in device
MMC_STATUS_HARDWARE_ERROR = 3;	Hardware error of some form occurred
MMC_STATUS_INVALID_DATA = 4;	Invalid data was received
MMC_STATUS_INVALID_PARAMETER = 5;	An invalid parameter was passed to the function
MMC_STATUS_INVALID_SEQUENCE = 6;	Invalid sequence encountered
MMC_STATUS_OUT_OF_MEMORY = 7;	No memory available for operation
MMC_STATUS_UNSUPPORTED_REQUEST = 8;	The request is unsupported
MMC_STATUS_NOT_PROCESSED = 9;	The MMC transfer has not yet been processed

MMC/SD version SD_VERSION_*, MMC_VERSION_*

SD_VERSION_SD = $00020000;
SD_VERSION_1_0 = (SD_VERSION_SD or $0100);
SD_VERSION_1_10 = (SD_VERSION_SD or $010a);
SD_VERSION_2 = (SD_VERSION_SD or $0200);
SD_VERSION_3 = (SD_VERSION_SD or $0300);
SD_VERSION_4 = (SD_VERSION_SD or $0400);
MMC_VERSION_MMC = $00010000;
MMC_VERSION_1_2 = (MMC_VERSION_MMC or $0102);
MMC_VERSION_1_4 = (MMC_VERSION_MMC or $0104);
MMC_VERSION_2_2 = (MMC_VERSION_MMC or $0202);
MMC_VERSION_3 = (MMC_VERSION_MMC or $0300);
MMC_VERSION_4 = (MMC_VERSION_MMC or $0400);
MMC_VERSION_4_1 = (MMC_VERSION_MMC or $0401);
MMC_VERSION_4_2 = (MMC_VERSION_MMC or $0402);
MMC_VERSION_4_3 = (MMC_VERSION_MMC or $0403);
MMC_VERSION_4_41 = (MMC_VERSION_MMC or $0429);
MMC_VERSION_4_5 = (MMC_VERSION_MMC or $0405);
MMC_VERSION_5_0 = (MMC_VERSION_MMC or $0500);
MMC_VERSION_UNKNOWN = (MMC_VERSION_MMC);

MMC/SD capabilities MMC_CAP_*

From: /include/linux/mmc/host.h
MMC_CAP_4_BIT_DATA = (1 shl 0);	Can the host do 4 bit transfers
MMC_CAP_MMC_HIGHSPEED = (1 shl 1);	Can do MMC high-speed timing
MMC_CAP_SD_HIGHSPEED = (1 shl 2);	Can do SD high-speed timing
MMC_CAP_SDIO_IRQ = (1 shl 3);	Can signal pending SDIO IRQs
MMC_CAP_SPI = (1 shl 4);	Talks only SPI protocols
MMC_CAP_NEEDS_POLL = (1 shl 5);	Needs polling for card-detection
MMC_CAP_8_BIT_DATA = (1 shl 6);	Can the host do 8 bit transfers
MMC_CAP_AGGRESSIVE_PM = (1 shl 7);	Suspend = (e)MMC/SD at idle
MMC_CAP_NONREMOVABLE = (1 shl 8);	Nonremovable eg. eMMC
MMC_CAP_WAIT_WHILE_BUSY = (1 shl 9);	Waits while card is busy
MMC_CAP_3_3V_DDR = (1 shl 11);	Host supports eMMC DDR 3.3V
MMC_CAP_1_8V_DDR = (1 shl 12);	Host supports eMMC DDR 1.8V
MMC_CAP_1_2V_DDR = (1 shl 13);	Host supports eMMC DDR 1.2V
MMC_CAP_DDR = (MMC_CAP_3_3V_DDR or MMC_CAP_1_8V_DDR or MMC_CAP_1_2V_DDR);
MMC_CAP_POWER_OFF_CARD = (1 shl 14);	Can power off after boot
MMC_CAP_BUS_WIDTH_TEST = (1 shl 15);	CMD14/CMD19 bus width ok
MMC_CAP_UHS_SDR12 = (1 shl 16);	Host supports UHS SDR12 mode
MMC_CAP_UHS_SDR25 = (1 shl 17);	Host supports UHS SDR25 mode
MMC_CAP_UHS_SDR50 = (1 shl 18);	Host supports UHS SDR50 mode
MMC_CAP_UHS_SDR104 = (1 shl 19);	Host supports UHS SDR104 mode
MMC_CAP_UHS_DDR50 = (1 shl 20);	Host supports UHS DDR50 mode
MMC_CAP_UHS = (MMC_CAP_UHS_SDR12 or MMC_CAP_UHS_SDR25 or MMC_CAP_UHS_SDR50 or MMC_CAP_UHS_SDR104 or MMC_CAP_UHS_DDR50);
MMC_CAP_SYNC_RUNTIME_PM = (1 shl 21);	Synced runtime PM suspends
MMC_CAP_NEED_RSP_BUSY = (1 shl 22);	Commands with R1B can't use R1
MMC_CAP_DRIVER_TYPE_A = (1 shl 23);	Host supports Driver Type A
MMC_CAP_DRIVER_TYPE_C = (1 shl 24);	Host supports Driver Type C
MMC_CAP_DRIVER_TYPE_D = (1 shl 25);	Host supports Driver Type D
MMC_CAP_DONE_COMPLETE = (1 shl 27);	RW reqs can be completed within mmc_request_done()
MMC_CAP_CD_WAKE = (1 shl 28);	Enable card detect wake
MMC_CAP_CMD_DURING_TFR = (1 shl 29);	Commands during data transfer
MMC_CAP_CMD23 = (1 shl 30);	CMD23 supported
MMC_CAP_HW_RESET = (1 shl 31);	Reset the eMMC card via RST_n

MMC/SD direction MMC_DATA_*

MMC_DATA_READ = 1;
MMC_DATA_WRITE = 2;

MMC/SD bus width MMC_BUS_WIDTH_*

MMC_BUS_WIDTH_1 = 0;
MMC_BUS_WIDTH_4 = 2;
MMC_BUS_WIDTH_8 = 3;

MMC bus speed (Hz) MMC_BUS_SPEED_*

MMC_BUS_SPEED_DEFAULT = 0;
MMC_BUS_SPEED_HS26 = 26000000;
MMC_BUS_SPEED_HS52 = 52000000;
MMC_BUS_SPEED_DDR = 52000000;
MMC_BUS_SPEED_HS200 = 200000000;

MMC/SD timing MMC_TIMING_*

From: /include/linux/mmc/host.h
MMC_TIMING_LEGACY = 0;
MMC_TIMING_MMC_HS = 1;
MMC_TIMING_SD_HS = 2;
MMC_TIMING_UHS_SDR12 = 3;
MMC_TIMING_UHS_SDR25 = 4;
MMC_TIMING_UHS_SDR50 = 5;
MMC_TIMING_UHS_SDR104 = 6;
MMC_TIMING_UHS_DDR50 = 7;
MMC_TIMING_MMC_DDR52 = 8;
MMC_TIMING_MMC_HS200 = 9;
MMC_TIMING_MMC_HS400 = 10;

MMC command MMC_CMD_*

From: /include/linux/mmc/mmc.h
Class 1
MMC_CMD_GO_IDLE_STATE = 0;
MMC_CMD_SEND_OP_COND = 1;
MMC_CMD_ALL_SEND_CID = 2;
MMC_CMD_SET_RELATIVE_ADDR = 3;
MMC_CMD_SET_DSR = 4;
MMC_CMD_SLEEP_AWAKE = 5;
MMC_CMD_SWITCH = 6;
MMC_CMD_SELECT_CARD = 7;
MMC_CMD_SEND_EXT_CSD = 8;
MMC_CMD_SEND_CSD = 9;
MMC_CMD_SEND_CID = 10;
MMC_CMD_READ_DAT_UNTIL_STOP = 11;
MMC_CMD_STOP_TRANSMISSION = 12;
MMC_CMD_SEND_STATUS = 13;
MMC_CMD_BUS_TEST_R = 14;
MMC_CMD_GO_INACTIVE_STATE = 15;
MMC_CMD_BUS_TEST_W = 19;
MMC_CMD_SPI_READ_OCR = 58;
MMC_CMD_SPI_CRC_ON_OFF = 59;
Class 2
MMC_CMD_SET_BLOCKLEN = 16;
MMC_CMD_READ_SINGLE_BLOCK = 17;
MMC_CMD_READ_MULTIPLE_BLOCK = 18;
MMC_CMD_SEND_TUNING_BLOCK = 19;
MMC_CMD_SEND_TUNING_BLOCK_HS200 = 21;
Class 3
MMC_CMD_WRITE_DAT_UNTIL_STOP = 20;
Class 4
MMC_CMD_SET_BLOCK_COUNT = 23;
MMC_CMD_WRITE_SINGLE_BLOCK = 24;
MMC_CMD_WRITE_MULTIPLE_BLOCK = 25;
MMC_CMD_PROGRAM_CID = 26;
MMC_CMD_PROGRAM_CSD = 27;
Class 6
MMC_CMD_SET_WRITE_PROT = 28;
MMC_CMD_CLR_WRITE_PROT = 29;
MMC_CMD_SEND_WRITE_PROT = 30;
Class 5
MMC_CMD_ERASE_GROUP_START = 35;
MMC_CMD_ERASE_GROUP_END = 36;
MMC_CMD_ERASE = 38;
Class 9
MMC_CMD_FAST_IO = 39;
MMC_CMD_GO_IRQ_STATE = 40;
Class 7
MMC_CMD_LOCK_UNLOCK = 42;
Class 8
MMC_CMD_APP_CMD = 55;
MMC_CMD_GEN_CMD = 56;
MMC_CMD_RES_MAN = 62;
MMC_CMD62_ARG1 = $EFAC62EC;
MMC_CMD62_ARG2 = $00CBAEA7;

MMC response type MMC_RSP_*

From: /include/linux/mmc/mmc.h
Native
MMC_RSP_PRESENT = (1 shl 0);
MMC_RSP_136 = (1 shl 1);	136 bit response
MMC_RSP_CRC = (1 shl 2);	Expect valid crc
MMC_RSP_BUSY = (1 shl 3);	Card may send busy
MMC_RSP_OPCODE = (1 shl 4);	Response contains opcode
These are the native response types, and correspond to valid bit patterns of the above flags. One additional valid pattern is all zeros, which means we don't expect a response.
MMC_RSP_NONE = (0);
MMC_RSP_R1 = (MMC_RSP_PRESENT or MMC_RSP_CRC or MMC_RSP_OPCODE);
MMC_RSP_R1B = (MMC_RSP_PRESENT or MMC_RSP_CRC or MMC_RSP_OPCODE or MMC_RSP_BUSY);
MMC_RSP_R2 = (MMC_RSP_PRESENT or MMC_RSP_136 or MMC_RSP_CRC);
MMC_RSP_R3 = (MMC_RSP_PRESENT);
MMC_RSP_R4 = (MMC_RSP_PRESENT);
MMC_RSP_R5 = (MMC_RSP_PRESENT or MMC_RSP_CRC or MMC_RSP_OPCODE);
MMC_RSP_R6 = (MMC_RSP_PRESENT or MMC_RSP_CRC or MMC_RSP_OPCODE);
MMC_RSP_R7 = (MMC_RSP_PRESENT or MMC_RSP_CRC or MMC_RSP_OPCODE);
SPI
MMC_RSP_SPI_S1 = (1 shl 7);	One status byte
MMC_RSP_SPI_S2 = (1 shl 8);	Second byte
MMC_RSP_SPI_B4 = (1 shl 9);	Four data bytes
MMC_RSP_SPI_BUSY = (1 shl 10);	Card may send busy
These are the SPI response types for MMC, SD, and SDIO cards. Commands return R1, with maybe more info. Zero is an error type, callers must always provide the appropriate MMC_RSP_SPI_Rx flags.
MMC_RSP_SPI_R1 = (MMC_RSP_SPI_S1);
MMC_RSP_SPI_R1B = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_BUSY);
MMC_RSP_SPI_R2 = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_S2);
MMC_RSP_SPI_R3 = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_B4);
MMC_RSP_SPI_R4 = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_B4);
MMC_RSP_SPI_R5 = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_S2);
MMC_RSP_SPI_R7 = (MMC_RSP_SPI_S1 or MMC_RSP_SPI_B4);

MMC response value MMC_RSP_R1_*, MMC_RSP_R2_*

R1 - MMC status in R1, for native mode (SPI bits are different)
MMC_RSP_R1_OUT_OF_RANGE = (1 shl 31);
MMC_RSP_R1_ADDRESS_ERROR = (1 shl 30);
MMC_RSP_R1_BLOCK_LEN_ERROR = (1 shl 29);
MMC_RSP_R1_ERASE_SEQ_ERROR = (1 shl 28);
MMC_RSP_R1_ERASE_PARAM = (1 shl 27);
MMC_RSP_R1_WP_VIOLATION = (1 shl 26);
MMC_RSP_R1_CARD_IS_LOCKED = (1 shl 25);
MMC_RSP_R1_LOCK_UNLOCK_FAILED = (1 shl 24);
MMC_RSP_R1_COM_CRC_ERROR = (1 shl 23);
MMC_RSP_R1_ILLEGAL_COMMAND = (1 shl 22);
MMC_RSP_R1_CARD_ECC_FAILED = (1 shl 21);
MMC_RSP_R1_CC_ERROR = (1 shl 20);
MMC_RSP_R1_ERROR = (1 shl 19);
MMC_RSP_R1_UNDERRUN = (1 shl 18);
MMC_RSP_R1_OVERRUN = (1 shl 17);
MMC_RSP_R1_CID_CSD_OVERWRITE = (1 shl 16);
MMC_RSP_R1_WP_ERASE_SKIP = (1 shl 15);
MMC_RSP_R1_CARD_ECC_DISABLED = (1 shl 14);
MMC_RSP_R1_ERASE_RESET = (1 shl 13);
MMC_RSP_R1_READY_FOR_DATA = (1 shl 8);
MMC_RSP_R1_SWITCH_ERROR = (1 shl 7);
MMC_RSP_R1_EXCEPTION_EVENT = (1 shl 6);
MMC_RSP_R1_APP_CMD = (1 shl 5);
MMC_RSP_R1_AKE_SEQ_ERROR = (1 shl 3);
R1 SPI - MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS. R1 is the low order byte, R2 is the next highest byte, when present.
MMC_RSP_R1_SPI_IDLE = (1 shl 0);
MMC_RSP_R1_SPI_ERASE_RESET = (1 shl 1);
MMC_RSP_R1_SPI_ILLEGAL_COMMAND = (1 shl 2);
MMC_RSP_R1_SPI_COM_CRC = (1 shl 3);
MMC_RSP_R1_SPI_ERASE_SEQ = (1 shl 4);
MMC_RSP_R1_SPI_ADDRESS = (1 shl 5);
MMC_RSP_R1_SPI_PARAMETER = (1 shl 6);
R1 bit 7 is always zero
R2 SPI - See above
MMC_RSP_R2_SPI_CARD_LOCKED = (1 shl 8);
MMC_RSP_R2_SPI_WP_ERASE_SKIP = (1 shl 9);	Or lock/unlock fail
MMC_RSP_R2_SPI_LOCK_UNLOCK_FAIL = MMC_RSP_R2_SPI_WP_ERASE_SKIP;
MMC_RSP_R2_SPI_ERROR = (1 shl 10);
MMC_RSP_R2_SPI_CC_ERROR = (1 shl 11);
MMC_RSP_R2_SPI_CARD_ECC_ERROR = (1 shl 12);
MMC_RSP_R2_SPI_WP_VIOLATION = (1 shl 13);
MMC_RSP_R2_SPI_ERASE_PARAM = (1 shl 14);
MMC_RSP_R2_SPI_OUT_OF_RANGE = (1 shl 15);	Or CSD overwrite
MMC_RSP_R2_SPI_CSD_OVERWRITE = MMC_RSP_R2_SPI_OUT_OF_RANGE;

MMC operation condition register (OCR) value MMC_OCR_*

See: Section 5.1 of SD Physical Layer Simplified Specification V4.10
MMC_OCR_BUSY = $80000000;	Busy Status - 0 = Initializing/1 = Initialization Complete
MMC_OCR_HCS = $40000000;	Card Capacity Status - 0 = SDSC/1 = SDHC or SDXC
MMC_OCR_UHS_II = $20000000;	UHS-II Card Status - 0 = Non UHS-II Card/1 = UHS-II Card
MMC_OCR_S18A = $01000000;	Switching to 1.8V Accepted - 0 = Continue current voltage signaling/1 = Ready for switching signal voltage
MMC_OCR_VOLTAGE_MASK = $007FFF80;
MMC_OCR_ACCESS_MODE = $60000000;

MMC card status register (CSR) value MMC_CARD_STATUS_*

See: Section 4.10.1 of SD Physical Layer Simplified Specification Version 4.10
Note: These map to the Native mode R1 response values
MMC_CARD_STATUS_MASK = not($0206BF7F);
MMC_CARD_STATUS_ERROR = (1 shl 19);
MMC_CARD_STATUS_CURRENT_STATE = ($0F shl 9);	See MMC_CURRENT_STATE_ definitions below
MMC_CARD_STATUS_READY_FOR_DATA = (1 shl 8);
MMC_CARD_STATUS_SWITCH_ERROR = (1 shl 7);

MMC current state value MMC_CURRENT_STATE_*

From Card Status Register or R1 Response
MMC_CURRENT_STATE_IDLE = (0 shl 9);
MMC_CURRENT_STATE_READY = (1 shl 9);
MMC_CURRENT_STATE_IDENT = (2 shl 9);
MMC_CURRENT_STATE_STBY = (3 shl 9);
MMC_CURRENT_STATE_TRAN = (4 shl 9);
MMC_CURRENT_STATE_DATA = (5 shl 9);
MMC_CURRENT_STATE_RCV = (6 shl 9);
MMC_CURRENT_STATE_PRG = (7 shl 9);
MMC_CURRENT_STATE_DIS = (8 shl 9);

MMC card identification data (CID) value MMC_CID_*

See: Section 5.2 of SD Physical Layer Simplified Specification Version 4.10
MMC CID Fields
MMC_CID_MID = 1;	Manufacturer Id
MMC_CID_OID = 2;	OEM/Application Id
MMC_CID_PNM0 = 3;	Product name (Byte 0)
MMC_CID_PNM1 = 4;	Product name (Byte 1)
MMC_CID_PNM2 = 5;	Product name (Byte 2)
MMC_CID_PNM3 = 6;	Product name (Byte 3)
MMC_CID_PNM4 = 7;	Product name (Byte 4)
MMC_CID_PNM5 = 8;	Product name (Byte 5)
MMC_CID_PNM6 = 9;	Product name (Byte 6)
MMC_CID_PRV = 10;	Product revision
MMC_CID_HRV = 11;	Hardware revision
MMC_CID_FRV = 12;	Firmware revision
MMC_CID_PSN = 13;	Product serial number
MMC_CID_MDT_YEAR = 14;	Manufacturing year
MMC_CID_MDT_MONTH = 15;	Manufacturing month
MMC_CID_CRC = 16;	CRC

MMC card specific data (CSD) value MMC_CSD_*

See: Section 5.3 of SD Physical Layer Simplified Specification Version 4.10
MMC CSD Fields
MMC_CSD_STRUCTURE = 1;
MMC_CSD_SPECVER = 2;	MMC/eMMC Only
MMC_CSD_TAAC_UNIT = 3;
MMC_CSD_TAAC_VALUE = 4;
MMC_CSD_NSAC = 5;
MMC_CSD_TRAN_SPEED_UNIT = 6;
MMC_CSD_TRAN_SPEED_VALUE = 37;
MMC_CSD_CCC = 7;
MMC_CSD_READ_BL_LEN = 8;
MMC_CSD_READ_BL_PARTIAL = 9;
MMC_CSD_WRITE_BLK_MISALIGN = 10;
MMC_CSD_READ_BLK_MISALIGN = 11;
MMC_CSD_DSR_IMP = 12;
MMC_CSD_C_SIZE = 13;
MMC_CSD_VDD_R_CURR_MIN = 14;
MMC_CSD_VDD_R_CURR_MAX = 15;
MMC_CSD_VDD_W_CURR_MIN = 16;
MMC_CSD_VDD_W_CURR_MAX = 17;
MMC_CSD_C_SIZE_MULT = 18;
MMC_CSD_ERASE_BLK_EN = 19;	SD Specification
MMC_CSD_SECTOR_SIZE = 20;	MMC/eMMC Specification/SD Specification
MMC_CSD_ERASE_GRP_SIZE = 21;	MMC/eMMC Specification
MMC_CSD_ERASE_GRP_MULT = 22;	MMC/eMMC Specification
MMC_CSD_WP_GRP_SIZE = 23;
MMC_CSD_WP_GRP_ENABLE = 24;
MMC_CSD_DEFAULT_ECC = 25;	MMC/eMMC Only
MMC_CSD_R2W_FACTOR = 26;
MMC_CSD_WRITE_BL_LEN = 27;
MMC_CSD_WRITE_BL_PARTIAL = 28;
MMC_CSD_CONTENT_PROT_APP = 29;	MMC/eMMC Only
MMC_CSD_FILE_FORMAT_GRP = 30;
MMC_CSD_COPY = 31;
MMC_CSD_PERM_WRITE_PROTECT = 32;
MMC_CSD_TMP_WRITE_PROTECT = 33;
MMC_CSD_FILE_FORMAT = 34;
MMC_CSD_ECC = 35;	MMC/eMMC Only
MMC_CSD_CRC = 36;

MMC CSD structure value MMC_CSD_STRUCT_*

MMC_CSD_STRUCT_VER_1_0 = 0;	Valid for system specification 1.0 - 1.2
MMC_CSD_STRUCT_VER_1_1 = 1;	Valid for system specification 1.4 - 2.2
MMC_CSD_STRUCT_VER_1_2 = 2;	Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1
MMC_CSD_STRUCT_EXT_CSD = 3;	Version is coded in CSD_STRUCTURE in EXT_CSD

MMC CSD spec version value MMC_CSD_SPEC_VER_*

MMC_CSD_SPEC_VER_0 = 0;	Implements system specification 1.0 - 1.2
MMC_CSD_SPEC_VER_1 = 1;	Implements system specification 1.4
MMC_CSD_SPEC_VER_2 = 2;	Implements system specification 2.0 - 2.2
MMC_CSD_SPEC_VER_3 = 3;	Implements system specification 3.1 - 3.2 - 3.31
MMC_CSD_SPEC_VER_4 = 4;	Implements system specification 4.0 - 4.1

MMC CSD TAAC time unit MMC_CSD_TAAC_UNITS*

MMC_CSD_TAAC_UNITS:array[0..7] of LongWord = (
1,
10,
100,
1000,
10000,
100000,
1000000,
10000000);

MMC CSD TAAC time value MMC_CSD_TAAC_VALUES*

MMC_CSD_TAAC_VALUES:array[0..15] of LongWord = (
0,
10,
12,
13,
15,
20,
25,
30,
35,
40,
45,
50,
55,
60,
70,
80);

MMC CSD card command class (CCC) value MMC_CCC_*

See: Table 4-21 (Page 68) of SD Physical Layer Simplified Specification V4.10
MMC_CCC_BASIC = (1 shl 0);	(Class 0) Basic protocol functions (CMD0,1,2,3,4,7,9,10,12,13,15) (and for SPI, CMD58,59)
MMC_CCC_STREAM_READ = (1 shl 1);	(Class 1) Stream read commands (CMD11)
MMC_CCC_BLOCK_READ = (1 shl 2);	(Class 2) Block read commands (CMD16,17,18)
MMC_CCC_STREAM_WRITE = (1 shl 3);	(Class 3) Stream write commands (CMD20)
MMC_CCC_BLOCK_WRITE = (1 shl 4);	(Class 4) Block write commands (CMD16,24,25,26,27)
MMC_CCC_ERASE = (1 shl 5);	(Class 5) Ability to erase blocks (CMD32,33,34,35,36,37,38,39)
MMC_CCC_WRITE_PROT = (1 shl 6);	(Class 6) Ability to write protect blocks (CMD28,29,30)
MMC_CCC_LOCK_CARD = (1 shl 7);	(Class 7) Ability to lock down card (CMD16,CMD42)
MMC_CCC_APP_SPEC = (1 shl 8);	(Class 8) Application specific (CMD55,56,57,ACMD*)
MMC_CCC_IO_MODE = (1 shl 9);	(Class 9) I/O mode (CMD5,39,40,52,53)
MMC_CCC_SWITCH = (1 shl 10);	(Class 10) High speed switch (CMD6,34,35,36,37,50)
MMC_CCC_EXTENSION = (1 shl 11);	(Class 11) Extension (CMD?)

MMC CSD transfer speed rate unit MMC_CSD_TRAN_SPEED_UNITS*

MMC_CSD_TRAN_SPEED_UNITS:array[0..7] of LongWord = (
10000,
100000,
1000000,
10000000,
0,
0,
0,
0);

MMC CSD transfer speed time value MMC_CSD_TRAN_SPEED_VALUES*

MMC_CSD_TRAN_SPEED_VALUES:array[0..15] of LongWord = (
0,
10,
12,
13,
15,
20,
25,
30,
35,
40,
45,
50,
55,
60,
70,
80);
SECURE_ERASE = $80000000;	Used by MMC_CMD_ERASE

MMC voltage value MMC_VDD_*

MMC_VDD_165_195 = $00000080;	VDD voltage 1.65 - 1.95
MMC_VDD_20_21 = $00000100;	VDD voltage 2.0 ~ 2.1
MMC_VDD_21_22 = $00000200;	VDD voltage 2.1 ~ 2.2
MMC_VDD_22_23 = $00000400;	VDD voltage 2.2 ~ 2.3
MMC_VDD_23_24 = $00000800;	VDD voltage 2.3 ~ 2.4
MMC_VDD_24_25 = $00001000;	VDD voltage 2.4 ~ 2.5
MMC_VDD_25_26 = $00002000;	VDD voltage 2.5 ~ 2.6
MMC_VDD_26_27 = $00004000;	VDD voltage 2.6 ~ 2.7
MMC_VDD_27_28 = $00008000;	VDD voltage 2.7 ~ 2.8
MMC_VDD_28_29 = $00010000;	VDD voltage 2.8 ~ 2.9
MMC_VDD_29_30 = $00020000;	VDD voltage 2.9 ~ 3.0
MMC_VDD_30_31 = $00040000;	VDD voltage 3.0 ~ 3.1
MMC_VDD_31_32 = $00080000;	VDD voltage 3.1 ~ 3.2
MMC_VDD_32_33 = $00100000;	VDD voltage 3.2 ~ 3.3
MMC_VDD_33_34 = $00200000;	VDD voltage 3.3 ~ 3.4
MMC_VDD_34_35 = $00400000;	VDD voltage 3.4 ~ 3.5
MMC_VDD_35_36 = $00800000;	VDD voltage 3.5 ~ 3.6

MMC switch mode value MMC_SWITCH_MODE_*

MMC_SWITCH_MODE_CMD_SET = $00;	Change the command set
MMC_SWITCH_MODE_SET_BITS = $01;	Set bits in EXT_CSD byte addressed by index which are 1 in value field
MMC_SWITCH_MODE_CLEAR_BITS = $02;	Clear bits in EXT_CSD byte addressed by index, which are 1 in value field
MMC_SWITCH_MODE_WRITE_BYTE = $03;	Set target byte to value

MMC EXT_CSD field EXT_CSD_*

EXT_CSD_CMDQ_MODE_EN = 15;	R/W
EXT_CSD_FLUSH_CACHE = 32;	W
EXT_CSD_CACHE_CTRL = 33;	R/W
EXT_CSD_POWER_OFF_NOTIFICATION = 34;	R/W
EXT_CSD_PACKED_FAILURE_INDEX = 35;	RO
EXT_CSD_PACKED_CMD_STATUS = 36;	RO
EXT_CSD_EXP_EVENTS_STATUS = 54;/code>	RO, 2 bytes
<code>EXT_CSD_EXP_EVENTS_CTRL = 56;	R/W, 2 bytes
EXT_CSD_DATA_SECTOR_SIZE = 61;	R
EXT_CSD_ENH_START_ADDR = 136;	R/W
EXT_CSD_ENH_SIZE_MULT = 140;	R/W
EXT_CSD_GP_SIZE_MULT = 143;	R/W
EXT_CSD_PARTITION_SETTING_COMPLETED = 155;	R/W
EXT_CSD_PARTITION_ATTRIBUTE = 156;	R/W
EXT_CSD_MAX_ENH_SIZE_MULT = 157;	R
EXT_CSD_PARTITION_SUPPORT = 160;	RO
EXT_CSD_HPI_MGMT = 161;	R/W
EXT_CSD_RST_N_FUNCTION = 162;	R/W
EXT_CSD_BKOPS_EN = 163;	R/W
EXT_CSD_BKOPS_START = 164;	W
EXT_CSD_SANITIZE_START = 165;	W
EXT_CSD_WR_REL_PARAM = 166;	RO
EXT_CSD_WR_REL_SET = 167;	R/W
EXT_CSD_RPMB_MULT = 168;	RO
EXT_CSD_FW_CONFIG = 169;	R/W
EXT_CSD_BOOT_WP = 173;	R/W
EXT_CSD_ERASE_GROUP_DEF = 175;	R/W
EXT_CSD_BOOT_BUS_CONDITIONS = 177;	R/W/E
EXT_CSD_PART_CONFIG = 179;	R/W
EXT_CSD_ERASED_MEM_CONT = 181;	RO
EXT_CSD_BUS_WIDTH = 183;	R/W
EXT_CSD_STROBE_SUPPORT = 184	RO
EXT_CSD_HS_TIMING = 185;	R/W
EXT_CSD_POWER_CLASS = 187;	R/W
EXT_CSD_REV = 192;	RO
EXT_CSD_STRUCTURE = 194;	RO
EXT_CSD_CARD_TYPE = 196;	RO
EXT_CSD_DRIVER_STRENGTH = 197;	RO
EXT_CSD_OUT_OF_INTERRUPT_TIME = 198;	RO
EXT_CSD_PART_SWITCH_TIME = 199;	RO
EXT_CSD_PWR_CL_52_195 = 200;	RO
EXT_CSD_PWR_CL_26_195 = 201;	RO
EXT_CSD_PWR_CL_52_360 = 202;	RO
EXT_CSD_PWR_CL_26_360 = 203;	RO
EXT_CSD_SEC_CNT = 212;	RO, 4 bytes
EXT_CSD_S_A_TIMEOUT = 217;	RO
EXT_CSD_REL_WR_SEC_C = 222;	RO
EXT_CSD_HC_WP_GRP_SIZE = 221;	RO
EXT_CSD_ERASE_TIMEOUT_MULT = 223;	RO
EXT_CSD_HC_ERASE_GRP_SIZE = 224;	RO
EXT_CSD_BOOT_SIZE_MULT = 226;	RO
EXT_CSD_SEC_TRIM_MULT = 229;	RO
EXT_CSD_SEC_ERASE_MULT = 230;	RO
EXT_CSD_SEC_FEATURE_SUPPORT = 231;	RO
EXT_CSD_TRIM_MULT = 232;	RO
EXT_CSD_PWR_CL_200_195 = 236;	RO
EXT_CSD_PWR_CL_200_360 = 237;	RO
EXT_CSD_PWR_CL_DDR_52_195 = 238;	RO
EXT_CSD_PWR_CL_DDR_52_360 = 239;	RO
EXT_CSD_BKOPS_STATUS = 246;	RO
EXT_CSD_POWER_OFF_LONG_TIME = 247;	RO
EXT_CSD_GENERIC_CMD6_TIME = 248;	RO
EXT_CSD_CACHE_SIZE = 249;	RO, 4 bytes
EXT_CSD_PWR_CL_DDR_200_360 = 253;	RO
EXT_CSD_FIRMWARE_VERSION = 254;	RO, 8 bytes
EXT_CSD_PRE_EOL_INFO = 267;	RO
EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A = 268;	RO
EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B = 269;	RO
EXT_CSD_CMDQ_DEPTH = 307;	RO
EXT_CSD_CMDQ_SUPPORT = 308;	RO
EXT_CSD_SUPPORTED_MODE = 493;	RO
EXT_CSD_TAG_UNIT_SIZE = 498;	RO
EXT_CSD_DATA_TAG_SUPPORT = 499;	RO
EXT_CSD_MAX_PACKED_WRITES = 500;	RO
EXT_CSD_MAX_PACKED_READS = 501;	RO
EXT_CSD_BKOPS_SUPPORT = 502;	RO
EXT_CSD_HPI_FEATURES = 503;	RO

MMC EXT_CSD field definition EXT_CSD_*

EXT_CSD_WR_REL_PARAM_EN = (1 shl 2);
EXT_CSD_BOOT_WP_B_PWR_WP_DIS = $40;
EXT_CSD_BOOT_WP_B_PERM_WP_DIS = $10;
EXT_CSD_BOOT_WP_B_PERM_WP_EN = $04;
EXT_CSD_BOOT_WP_B_PWR_WP_EN = $01;
EXT_CSD_PART_CONFIG_ACC_MASK = $07;
EXT_CSD_PART_CONFIG_ACC_BOOT0 = $01;
EXT_CSD_PART_CONFIG_ACC_RPMB = $03;
EXT_CSD_PART_CONFIG_ACC_GP0 = $04;
EXT_CSD_PART_SETTING_COMPLETED = $01;
EXT_CSD_PART_SUPPORT_PART_EN = $01;
EXT_CSD_CMD_SET_NORMAL = (1 shl 0);
EXT_CSD_CMD_SET_SECURE = (1 shl 1);
EXT_CSD_CMD_SET_CPSECURE = (1 shl 2);
EXT_CSD_CARD_TYPE_HS_26 = (1 shl 0);	Card can run at 26MHz
EXT_CSD_CARD_TYPE_HS_52 = (1 shl 1);	Card can run at 52MHz
EXT_CSD_CARD_TYPE_HS = (EXT_CSD_CARD_TYPE_HS_26 or EXT_CSD_CARD_TYPE_HS_52);
EXT_CSD_CARD_TYPE_DDR_1_8V = (1 shl 2);	Card can run at 52MHz / DDR mode @1.8V or 3V I/O
EXT_CSD_CARD_TYPE_DDR_1_2V = (1 shl 3);	Card can run at 52MHz / DDR mode @1.2V I/O
EXT_CSD_CARD_TYPE_DDR_52 = (EXT_CSD_CARD_TYPE_DDR_1_8V or EXT_CSD_CARD_TYPE_DDR_1_2V);
EXT_CSD_CARD_TYPE_HS200_1_8V = (1 shl 4);	Card can run at 200MHz
EXT_CSD_CARD_TYPE_HS200_1_2V = (1 shl 5);	Card can run at 200MHz / SDR mode @1.2V I/O
EXT_CSD_CARD_TYPE_HS200 = (EXT_CSD_CARD_TYPE_HS200_1_8V or EXT_CSD_CARD_TYPE_HS200_1_2V);
EXT_CSD_CARD_TYPE_HS400_1_8V = (1 shl 6);	Card can run at 200MHz DDR, 1.8V
EXT_CSD_CARD_TYPE_HS400_1_2V = (1 shl 7);	Card can run at 200MHz DDR, 1.2V
EXT_CSD_CARD_TYPE_HS400 = (EXT_CSD_CARD_TYPE_HS400_1_8V or EXT_CSD_CARD_TYPE_HS400_1_2V);
EXT_CSD_CARD_TYPE_HS400ES = (1 shl 8);	Card can run at HS400ES
EXT_CSD_BUS_WIDTH_1 = 0;	Card is in 1 bit mode
EXT_CSD_BUS_WIDTH_4 = 1;	Card is in 4 bit mode
EXT_CSD_BUS_WIDTH_8 = 2;	Card is in 8 bit mode
EXT_CSD_DDR_BUS_WIDTH_4 = 5;	Card is in 4 bit DDR mode
EXT_CSD_DDR_BUS_WIDTH_8 = 6;	Card is in 8 bit DDR mode
EXT_CSD_BUS_WIDTH_STROBE = 1 shl 7;	Enhanced strobe mode
EXT_CSD_TIMING_BC = 0;	Backwards compatility
EXT_CSD_TIMING_HS = 1;	High speed
EXT_CSD_TIMING_HS200 = 2;	HS200
EXT_CSD_TIMING_HS400 = 3;	HS400
EXT_CSD_DRV_STR_SHIFT = 4;	Driver Strength shift
EXT_CSD_SEC_ER_EN = 1 shl 0;
EXT_CSD_SEC_BD_BLK_EN = 1 shl 2;
EXT_CSD_SEC_GB_CL_EN = 1 shl 4;
EXT_CSD_SEC_SANITIZE = 1 shl 6;	v4.5 only
EXT_CSD_RST_N_EN_MASK = $03;
EXT_CSD_RST_N_ENABLED = 1;	RST_n is enabled on card
EXT_CSD_NO_POWER_NOTIFICATION = 0;
EXT_CSD_POWER_ON = 1;
EXT_CSD_POWER_OFF_SHORT = 2;
EXT_CSD_POWER_OFF_LONG = 3;
EXT_CSD_PWR_CL_8BIT_MASK = $F0;	8 bit PWR CLS
EXT_CSD_PWR_CL_4BIT_MASK = $0F;	8 bit PWR CLS
EXT_CSD_PWR_CL_8BIT_SHIFT = 4;
EXT_CSD_PWR_CL_4BIT_SHIFT = 0;
EXT_CSD_PACKED_EVENT_EN = 1 shl 3;

MMC EXT_CSD exception event status field EXT_CSD_*

EXT_CSD_URGENT_BKOPS = 1 shl 0;
EXT_CSD_DYNCAP_NEEDED = 1 shl 1;
EXT_CSD_SYSPOOL_EXHAUSTED = 1 shl 2;
EXT_CSD_PACKED_FAILURE = 1 shl 3;
EXT_CSD_PACKED_GENERIC_ERROR = 1 shl 0;
EXT_CSD_PACKED_INDEXED_ERROR = 1 shl 1;

MMC EXT_CSD BKOPS status level EXT_CSD_BKOPS_*

EXT_CSD_BKOPS_LEVEL_2 = $02;

MMC EXT_CSD BKOPS mode EXT_CSD_*_BKOPS_

EXT_CSD_MANUAL_BKOPS_MASK = $01;
EXT_CSD_AUTO_BKOPS_MASK = $02;

MMC EXT_CSD command queue EXT_CSD_CMDQ_*

EXT_CSD_CMDQ_MODE_ENABLED = 1 shl 0;
EXT_CSD_CMDQ_DEPTH_MASK = $1F;
EXT_CSD_CMDQ_SUPPORTED = 1 shl 0;

MMC EXT_CSD high speed max MMC_HIGH_*

MMC_HIGH_26_MAX_DTR = 26000000;
MMC_HIGH_52_MAX_DTR = 52000000;
MMC_HIGH_DDR_MAX_DTR = 52000000;
MMC_HS200_MAX_DTR = 200000000;

MMC EXT_CSD minimum partition switch timeout MMC_MIN_PART_*

MMC_MIN_PART_SWITCH_TIME = 300;

Milliseconds

MMC miscellaneous MMCPART_*, MMC_MAX_*

MMCPART_NOAVAILABLE = ($ff);
PART_ACCESS_MASK = ($07);
PART_SUPPORT = ($01);
ENHNCD_SUPPORT = ($02);
PART_ENH_ATTRIB = ($1f);
Maximum block size for MMC
MMC_MAX_BLOCK_LEN = 512;
Maximum block count for MMC
MMC_MAX_BLOCK_COUNT = 65535;
The number of MMC physical partitions. These consist of: boot partitions (2), general purpose partitions (4) in MMC v4.4.
MMC_NUM_BOOT_PARTITION = 2;
MMC_PART_RPMB = 3;	RPMB partition number

MMC logging MMC_LOG_*

MMC_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG;	MMC debugging messages
MMC_LOG_LEVEL_INFO = LOG_LEVEL_INFO;	MMC informational messages, such as a device being attached or detached
MMC_LOG_LEVEL_WARN = LOG_LEVEL_WARN;	MMC warning messages
MMC_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR;	MMC error messages
MMC_LOG_LEVEL_NONE = LOG_LEVEL_NONE;	No MMC messages

SD specific constants SD_*

SD_DEFAULT_BLOCKSIZE = 512;
SD_DEFAULT_BLOCKSHIFT = 9;

SD bus width SD_BUS_WIDTH_*

SD_BUS_WIDTH_1 = 0;
SD_BUS_WIDTH_4 = 2;

SD bus speed (Hz) SD_BUS_SPEED_*

SD_BUS_SPEED_DEFAULT = 25000000;
SD_BUS_SPEED_HS = 50000000;
SD_BUS_SPEED_UHS_SDR12 = 25000000;
SD_BUS_SPEED_UHS_SDR25 = 50000000;
SD_BUS_SPEED_UHS_DDR50 = 50000000;
SD_BUS_SPEED_UHS_SDR50 = 100000000;
SD_BUS_SPEED_UHS_SDR104 = 208000000;

SD command SD_CMD_*

From: /include/linux/mmc/sd.h
Class 0
SD_CMD_SEND_RELATIVE_ADDR = 3;
SD_CMD_SEND_IF_COND = 8;
SD_CMD_SWITCH_VOLTAGE = 11;
Class 10
SD_CMD_SWITCH = 6;	See: 4.3.10 Switch Function Command
Class 5
SD_CMD_ERASE_WR_BLK_START = 32;
SD_CMD_ERASE_WR_BLK_END = 33;
Application commands
SD_CMD_APP_SET_BUS_WIDTH = 6;
SD_CMD_APP_SD_STATUS = 13;
SD_CMD_APP_SEND_NUM_WR_BLKS = 22;
SD_CMD_APP_SEND_OP_COND = 41;
SD_CMD_APP_SEND_SCR = 51;
SD_CMD_SWITCH argument format:
[31] Check (0) or switch (1)
[30:24] Reserved (0)
[23:20] Function group 6
[19:16] Function group 5
[15:12] Function group 4
[11:8] Function group 3
[7:4] Function group 2
[3:0] Function group 1

SD switch mode value SD_SWITCH_MODE_*

SD_SWITCH_MODE_CHECK = 0;
SD_SWITCH_MODE_SWITCH = 1;

SD switch function group SD_SWITCH_FUNCTION_GROUP_*

SD_SWITCH_FUNCTION_GROUP_ACCESS = 0;	Access Mode
SD_SWITCH_FUNCTION_GROUP_COMMAND = 1;	Command System
SD_SWITCH_FUNCTION_GROUP_DRIVER = 2;	Driver Strength
SD_SWITCH_FUNCTION_GROUP_POWER = 3;	Power Limit

SD switch access mode SD_SWITCH_ACCESS_MODE_*

SD_SWITCH_ACCESS_MODE_DEF = 0;	Default SDR12
SD_SWITCH_ACCESS_MODE_HS = 1;	High Speed SDR25
SD_SWITCH_ACCESS_MODE_SDR50 = 2;	SDR50 (1.8V only)
SD_SWITCH_ACCESS_MODE_SDR104 = 3;	SDR104 (1.8V only)
SD_SWITCH_ACCESS_MODE_DDR50 = 4;	DDR50 (1.8V only)

SD switch command system SD_SWITCH_COMMAND_SYSTEM_*

SD_SWITCH_COMMAND_SYSTEM_DEF = 0;	Default
SD_SWITCH_COMMAND_SYSTEM_EC = 1;	For eC
SD_SWITCH_COMMAND_SYSTEM_OTP = 3;	OTP
SD_SWITCH_COMMAND_SYSTEM_ASSD = 4;	ASSD

SD switch driver strength SD_SWITCH_DRIVER_STRENGTH_*

SD_SWITCH_DRIVER_STRENGTH_DEF = 0;	Default Type B
SD_SWITCH_DRIVER_STRENGTH_TYPE_A = 1;	Type A
SD_SWITCH_DRIVER_STRENGTH_TYPE_C = 2;	Type C
SD_SWITCH_DRIVER_STRENGTH_TYPE_D = 3;	Type D

SD switch power limit SD_SWITCH_POWER_LIMIT_*

SD_SWITCH_POWER_LIMIT_DEF = 0;	Default 0.72W
SD_SWITCH_POWER_LIMIT_144 = 1;	1.44W
SD_SWITCH_POWER_LIMIT_216 = 2;	2.16W (Embedded only)
SD_SWITCH_POWER_LIMIT_216 = 2;	2.16W (Embedded only)
SD_SWITCH_POWER_LIMIT_288 = 3;	2.88W (Embedded only)
SD_SWITCH_POWER_LIMIT_180 = 4;	1.80W

SD send interface condition value SD_SEND_IF_COND_*

SD_SEND_IF_COND_CHECK_PATTERN = $AA;
SD_SEND_IF_COND_VOLTAGE_MASK = $00FF8000;	MMC_VDD_27_28, MMC_VDD_28_29, MMC_VDD_29_30, MMC_VDD_30_31, MMC_VDD_31_32, MMC_VDD_32_33, MMC_VDD_33_34, MMC_VDD_34_35, MMC_VDD_35_36
SD_CMD_SEND_IF_COND argument format:
[31:12] Reserved (0)
[11:8] Host Voltage Supply Flags
[7:0] Check Pattern (0xAA)

SD send operation condition value SD_SEND_OP_COND_*

SD_SEND_OP_COND_VOLTAGE_MASK = $00FF8000;

MMC_VDD_27_28, MMC_VDD_28_29, MMC_VDD_29_30, MMC_VDD_30_31, MMC_VDD_31_32, MMC_VDD_32_33, MMC_VDD_33_34, MMC_VDD_34_35, MMC_VDD_35_36

SD operation condition register value SD_OCR_*

See: Section 5.1 of SD Physical Layer Simplified Specification V4.10
SD_OCR_CCS = $40000000;	Card Capacity Status - 0 = SDSC/1 = SDHC or SDXC
SD_OCR_CCS = $40000000;	Card Capacity Status - 0 = SDSC/1 = SDHC or SDXC
SD_OCR_UHS_II = $20000000;	UHS-II Card Status - 0 = Non UHS-II Card/1 = UHS-II Card
SD_OCR_XPC = $10000000;	SDXC Power Control
SD_OCR_S18A = $01000000;	1.8V Switching Accepted

SD CSD structure value SD_CSD_STRUCT_*

SD_CSD_STRUCT_VER_1_0 = 0;	Standard Capacity
SD_CSD_STRUCT_VER_2_0 = 1;	High Capacity and Extended Capacity

SD status register (SSR) value SD_SSR_*

See: Section 4.10.2 of SD Physical Layer Simplified Specification Version 4.10
SD SSR Fields
SD_SSR_DAT_BUS_WIDTH = 1;
SD_SSR_SECURED_MODE = 2;
SD_SSR_SD_CARD_TYPE = 3;
SD_SSR_SIZE_OF_PROTECTED_AREA = 4;
SD_SSR_SPEED_CLASS = 5;
SD_SSR_PERFORMANCE_MOVE = 6;
SD_SSR_AU_SIZE = 7;
SD_SSR_ERASE_SIZE = 8;
SD_SSR_ERASE_TIMEOUT = 9;
SD_SSR_ERASE_OFFSET = 10;
SD_SSR_UHS_SPEED_GRADE = 11;
SD_SSR_UHS_AU_SIZE = 12;

SD SSR bus width value SD_SSR_BUS_WIDTH_*

SD_SSR_BUS_WIDTH_1 = 0;	1 (default)
SD_SSR_BUS_WIDTH_4 = 2;	4 bit width

SD SSR card type value SD_SSR_CARD_TYPE_*

SD_SSR_CARD_TYPE_RW = $0000;	Regular SD RD/WR Card
SD_SSR_CARD_TYPE_ROM = $0001;	SD ROM Card
SD_SSR_CARD_TYPE_OTP = $0002;	OTP

SD SSR speed class value SD_SSR_SPEED_CLASS_*

SD_SSR_SPEED_CLASS_0 = $00;	Class 0
SD_SSR_SPEED_CLASS_2 = $01;	Class 2
SD_SSR_SPEED_CLASS_4 = $02;	Class 4
SD_SSR_SPEED_CLASS_6 = $03;	Class 6
SD_SSR_SPEED_CLASS_10 = $04;	Class 10

SD SSR AU size value SD_SSR_AU_SIZE_*

SD_SSR_AU_SIZE_VALUES:array[0..15] of LongWord = (
0,	Not Defined
$00004000,	16 KB
$00008000,	32 KB
$00010000,	64 KB
$00020000,	128 KB
$00040000,	256 KB
$00080000,	512 KB
$00100000,	1 MB
$00200000,	2 MB
$00400000,	4 MB
$00800000,	8 MB
$00800000 + $00400000,	12 MB
$01000000,	16 MB
$01000000 + $00800000,	24 MB
$02000000,	32 MB
$04000000);	64 MB

SD SSR UHS speed grade value SD_SSR_UHS_SPEED_*

SD_SSR_UHS_SPEED_GRADE_0 = 0;	Less than 10MB/sec
SD_SSR_UHS_SPEED_GRADE_1 = 1;	10MB/sec and above

SD SSR UHS AU size value SD_SSR_UHS_AU_SIZE_*

SD_SSR_UHS_AU_SIZE_VALUES:array[0..15] of LongWord = (
0,	Not Defined
0,	Not Used
0,	Not Used
0,	Not Used
0,	Not Used
0,	Not Used
0,	Not Used
$00100000,	1 MB
$00200000,	2 MB
$00400000,	4 MB
$00800000,	8 MB
$00800000 + $00400000,	12 MB
$01000000,	16 MB
$01000000 + $00800000,	24 MB
$02000000,	32 MB
$04000000);	64 MB

SD switch status value SD_SWITCH_*

See: Section 4.3.10 of SD Physical Layer Simplified Specification Version 4.10
SD Switch Fields
SD_SWITCH_MAXIMUM_CURRENT = 1;
SD_SWITCH_GROUP6_SUPPORT = 2;
SD_SWITCH_GROUP5_SUPPORT = 3;
SD_SWITCH_GROUP4_SUPPORT = 4;
SD_SWITCH_GROUP3_SUPPORT = 5;
SD_SWITCH_GROUP2_SUPPORT = 6;
SD_SWITCH_GROUP1_SUPPORT = 7;
SD_SWITCH_GROUP6_SELECTION = 8;
SD_SWITCH_GROUP5_SELECTION = 9;
SD_SWITCH_GROUP4_SELECTION = 10;
SD_SWITCH_GROUP3_SELECTION = 11;
SD_SWITCH_GROUP2_SELECTION = 12;
SD_SWITCH_GROUP1_SELECTION = 13;
SD_SWITCH_STRUCT_VERSION = 14;
SD_SWITCH_GROUP6_BUSY_STATUS = 15;
SD_SWITCH_GROUP5_BUSY_STATUS = 16;
SD_SWITCH_GROUP4_BUSY_STATUS = 17;
SD_SWITCH_GROUP3_BUSY_STATUS = 18;
SD_SWITCH_GROUP2_BUSY_STATUS = 19;
SD_SWITCH_GROUP1_BUSY_STATUS = 20;
SD Switch Access Mode (Bus Speed) Support (Group 1)
SD_SWITCH_GROUP1_SDR12 = (1 shl 0);
SD_SWITCH_GROUP1_HS = (1 shl 1);
SD_SWITCH_GROUP1_SDR25 = (1 shl 1);
SD_SWITCH_GROUP1_SDR50 = (1 shl 2);
SD_SWITCH_GROUP1_SDR104 = (1 shl 3);
SD_SWITCH_GROUP1_DDR50 = (1 shl 4);
SD Switch Driver Strength Support (Group 3)
SD_SWITCH_GROUP3_TYPE_B = (1 shl 0);
SD_SWITCH_GROUP3_TYPE_A = (1 shl 1);
SD_SWITCH_GROUP3_TYPE_C = (1 shl 2);
SD_SWITCH_GROUP3_TYPE_D = (1 shl 3);
SD Switch Structure Versions
SD_SWITCH_STRUCT_VER_0 = 0;	Bits 511:376 are defined (SD_SWITCH_MAXIMUM_CURRENT to SD_SWITCH_GROUP1_SELECTION)
SD_SWITCH_STRUCT_VER_1 = 1;	Bits 511:272 are defined (SD_SWITCH_MAXIMUM_CURRENT to SD_SWITCH_GROUP1_BUSY_STATUS

SD configuration register (SCR) value SD_SCR_*

See: Section 5.6 of SD Physical Layer Simplified Specification Version 4.10
SD SCR Fields
SD_SCR_STRUCTURE = 1;
SD_SCR_SD_SPEC = 2;
SD_SCR_DATA_STAT_AFTER_ERASE = 3;
SD_SCR_SD_SECURITY = 4;
SD_SCR_SD_BUS_WIDTHS = 5;
SD_SCR_SD_SPEC3 = 6;
SD_SCR_EX_SECURITY = 7;
SD_SCR_SD_SPEC4 = 8;
SD_SCR_CMD_SUPPORT = 9;

SD SCR structure value SD_SCR_STRUCT_*

SD_SCR_STRUCT_VER_1_0 = 0;

Valid for system specification 1.01 - 4.0

SD SCR spec version value SD_SCR_SPEC_VER_*

SD_SCR_SPEC_VER_0 = 0;	Implements system specification 1.0 - 1.01
SD_SCR_SPEC_VER_1 = 1;	Implements system specification 1.10
SD_SCR_SPEC_VER_2 = 2;	Implements system specification 2.00-4.0X

SD SCR security value SD_SCR_SECURITY_*

SD_SCR_SECURITY_VER_0 = 0;	No Security
SD_SCR_SECURITY_VER_2 = 2;	SDSC Card (Security Version 1.01)
SD_SCR_SECURITY_VER_3 = 3;	SDHC Card (Security Version 2.00)
SD_SCR_SECURITY_VER_4 = 4;	SDXC Card (Security Version 3.xx)

SD SCR bus width value SD_SCR_BUS_WIDTH_*

SD_SCR_BUS_WIDTH_1 = (1 shl 0);	1 bit (DAT0)
SD_SCR_BUS_WIDTH_4 = (1 shl 2); {4 bit (DAT0-3)}	4 bit (DAT0-3)

SD SCR extended security value SD_SCR_EX_SECURITY_*

SD_SCR_EX_SECURITY_VER_0 = 0;

Extended Security is not supported

SD SCR command support value SD_SCR_*_SUPPORT

SD_SCR_CMD20_SUPPORT = (1 shl 0);	Mandatory for SDXC card
SD_SCR_CMD23_SUPPORT = (1 shl 1);	Mandatory for UHS104 card
SD_SCR_CMD48_49_SUPPORT = (1 shl 2);	Optional
SD_SCR_CMD58_59_SUPPORT = (1 shl 3);	Optional (If CMD58/59 is supported, CMD48/49 shall be supported)

SDIO device state SDIO_STATE_*

SDIO_STATE_DETACHED = 0;
SDIO_STATE_DETACHING = 1;
SDIO_STATE_ATTACHING = 2;
SDIO_STATE_ATTACHED = 3;
SDIO_STATE_MAX = 3;
SDIO_STATE_NAMES:array[SDIO_STATE_DETACHED..SDIO_STATE_MAX] of String = ('SDIO_STATE_DETACHED', 'SDIO_STATE_DETACHING', 'SDIO_STATE_ATTACHING', 'SDIO_STATE_ATTACHED');

SDIO device status SDIO_STATUS_*

SDIO_STATUS_UNBOUND = 0;
SDIO_STATUS_BOUND = 1;
SDIO_STATUS_MAX = 1;
SDIO_STATUS_NAMES:array[SDIO_STATUS_UNBOUND..SDIO_STATUS_MAX] of String = ('SDIO_STATUS_UNBOUND', 'SDIO_STATUS_BOUND');

SDIO command SDIO_CMD_*

From: /include/linux/mmc/sdio.h
SDIO_CMD_SEND_OP_COND = 5;
SDIO_CMD_RW_DIRECT = 52;
SDIO_CMD_RW_EXTENDED = 53;
SDIO_CMD_RW_DIRECT argument format:
[31] R/W flag
[30:28] Function number
[27] RAW flag
[25:9] Register address
[7:0] Data
SDIO_CMD_RW_EXTENDED argument format:
[31] R/W flag
[30:28] Function number
[27] Block mode
[26] Increment address
[25:9] Register address
[8:0] Byte/block count

SDIO response value SDIO_RSP_*

From: /include/linux/mmc/sdio.h
R4
SDIO_RSP_R4_18V_PRESENT = (1 shl 24);
SDIO_RSP_R4_MEMORY_PRESENT = (1 shl 27);
R5
SDIO_RSP_R5_COM_CRC_ERROR = (1 shl 15);
SDIO_RSP_R5_ILLEGAL_COMMAND = (1 shl 14);
SDIO_RSP_R5_ERROR = (1 shl 11);
SDIO_RSP_R5_FUNCTION_NUMBER = (1 shl 9);
SDIO_RSP_R5_OUT_OF_RANGE = (1 shl 8);

SDIO card common control registers (CCCR) SDIO_CCCR_*

SDIO_CCCR_CCCR = $00;
SDIO_CCCR_SD = $01;
SDIO_CCCR_IOEx = $02;
SDIO_CCCR_IORx = $03;
SDIO_CCCR_IENx = $04;	Function/Master Interrupt Enable
SDIO_CCCR_INTx = $05;	Function Interrupt Pending
SDIO_CCCR_ABORT = $06;	function abort/card reset
SDIO_CCCR_IF = $07;	bus interface controls
SDIO_CCCR_CAPS = $08;
SDIO_CCCR_CIS = $09;	common CIS pointer (3 bytes)
Following 4 regs are valid only if SBS is set
SDIO_CCCR_SUSPEND = $0c;
SDIO_CCCR_SELx = $0d;
SDIO_CCCR_EXECx = $0e;
SDIO_CCCR_READYx = $0f;
SDIO_CCCR_BLKSIZE = $10;
SDIO_CCCR_POWER = $12;
SDIO_CCCR_SPEED = $13;
SDIO_CCCR_UHS = $14;
SDIO_CCCR_DRIVE_STRENGTH = $15;

SDIO revision SDIO_*_REV_*

SDIO CCCR Register values
SDIO_CCCR_REV_1_00 = 0;	CCCR/FBR Version 1.00
SDIO_CCCR_REV_1_10 = 1;	CCCR/FBR Version 1.10
SDIO_CCCR_REV_1_20 = 2;	CCCR/FBR Version 1.20
SDIO_CCCR_REV_3_00 = 3;	CCCR/FBR Version 3.00
SDIO_SDIO_REV_1_00 = 0;	SDIO Spec Version 1.00
SDIO_SDIO_REV_1_10 = 1;	SDIO Spec Version 1.10
SDIO_SDIO_REV_1_20 = 2;	SDIO Spec Version 1.20
SDIO_SDIO_REV_2_00 = 3;	SDIO Spec Version 2.00
SDIO_SDIO_REV_3_00 = 4;	SDIO Spec Version 3.00
SDIO CCCR SD Register values
SDIO_SD_REV_1_01 = 0;	SD Physical Spec Version 1.01
SDIO_SD_REV_1_10 = 1;	SD Physical Spec Version 1.10
SDIO_SD_REV_2_00 = 2;	SD Physical Spec Version 2.00
SDIO_SD_REV_3_00 = 3;	SD Physical Spev Version 3.00

SDIO bus width SDIO_BUS_*

SDIO CCCR IF Register values
SDIO_BUS_WIDTH_MASK = $03;	data bus width setting
SDIO_BUS_WIDTH_1BIT = $00;
SDIO_BUS_WIDTH_RESERVED = $01;
SDIO_BUS_WIDTH_4BIT = $02;
SDIO_BUS_ECSI = $20;	Enable continuous SPI interrupt
SDIO_BUS_SCSI = $40;	Support continuous SPI interrupt
SDIO_BUS_ASYNC_INT = $20;
SDIO_BUS_CD_DISABLE = $80;	disable pull-up on DAT3 (pin 1)

SDIO CCCR caps register value SDIO_CCCR_CAP_*

SDIO_CCCR_CAP_SDC = $01;	can do CMD52 while data transfer
SDIO_CCCR_CAP_SMB = $02;	can do multi-block xfers (CMD53)
SDIO_CCCR_CAP_SRW = $04;	supports read-wait protocol
SDIO_CCCR_CAP_SBS = $08;	supports suspend/resume
SDIO_CCCR_CAP_S4MI = $10;	interrupt during 4-bit CMD53
SDIO_CCCR_CAP_E4MI = $20;	enable ints during 4-bit CMD53
SDIO_CCCR_CAP_LSC = $40;	low speed card
SDIO_CCCR_CAP_4BLS = $80;	4 bit low speed card

SDIO CCCR power register value SDIO_POWER_*

SDIO_POWER_SMPC = $01;	Supports Master Power Control
SDIO_POWER_EMPC = $02;	Enable Master Power Control

SDIO CCCR speed register value SDIO_SPEED_*

SDIO_SPEED_SHS = $01;	Supports High-Speed mode
SDIO_SPEED_BSS_SHIFT = 1;
SDIO_SPEED_BSS_MASK = (7 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_SDR12 = (0 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_SDR25 = (1 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_SDR50 = (2 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_SDR104 = (3 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_DDR50 = (4 shl SDIO_SPEED_BSS_SHIFT);
SDIO_SPEED_EHS = SDIO_SPEED_SDR25;	Enable High-Speed

SDIO CCCR UHS register value SDIO_UHS_*

SDIO_UHS_SDR50 = $01;
SDIO_UHS_SDR104 = $02;
SDIO_UHS_DDR50 = $04;

SDIO CCCR drive strength register value SDIO_DRIVE_*

SDIO_SDTx_MASK = $07;
SDIO_DRIVE_SDTA = (1 shl 0);
SDIO_DRIVE_SDTC = (1 shl 1);
SDIO_DRIVE_SDTD = (1 shl 2);
SDIO_DRIVE_DTSx_MASK = $03;
SDIO_DRIVE_DTSx_SHIFT = 4;
SDIO_DTSx_SET_TYPE_B = (0 shl SDIO_DRIVE_DTSx_SHIFT);
SDIO_DTSx_SET_TYPE_A = (1 shl SDIO_DRIVE_DTSx_SHIFT);
SDIO_DTSx_SET_TYPE_C = (2 shl SDIO_DRIVE_DTSx_SHIFT);
SDIO_DTSx_SET_TYPE_D = (3 shl SDIO_DRIVE_DTSx_SHIFT);

SDIO function basic register (FBR) SDIO_FBR_*

SDIO_FBR_BASE(f) ((f) * $100)	base of function f's FBRs
SDIO_FBR_STD_IF = $00;
SDIO_FBR_STD_IF_EXT = $01;
SDIO_FBR_POWER = $02;
SDIO_FBR_CIS = $09;	CIS pointer (3 bytes)
SDIO_FBR_CSA = $0C;	CSA pointer (3 bytes)
SDIO_FBR_BLKSIZE = $10;	block size (2 bytes)
SDIO FBR IF Register values
SDIO_FBR_SUPPORTS_CSA = $40;	supports Code Storage Area
SDIO_FBR_ENABLE_CSA = $80;	enable Code Storage Area
SDIO FBR POWER Register values
SDIO_FBR_POWER_SPS = $01;	Supports Power Selection
SDIO_FBR_POWER_EPS = $02;	Enable (low) Power Selection

SDHCI specific constants SDHCI_*

SDHCI_NAME_PREFIX = 'SDHCI';

Name prefix for SDHCI Devices

SDHCI host type SDHCI_TYPE_*

SDHCI_TYPE_NONE = 0;
SDHCI_TYPE_MMC = 1;	An MMC specification host controller
SDHCI_TYPE_SD = 2;	An SD specification host controller
SDHCI_TYPE_MMCI = 3;	An MMCI specification host controller
SDHCI_TYPE_MAX = 3;
SDHCI Type Names
SDHCI_TYPE_NAMES:array[SDHCI_TYPE_NONE..SDHCI_TYPE_MAX] of String = (
'SDHCI_TYPE_NONE',
'SDHCI_TYPE_MMC',
'SDHCI_TYPE_SD',
'SDHCI_TYPE_MMCI');

SDHCI host state SDHCI_STATE_*

SDHCI_STATE_DISABLED = 0;
SDHCI_STATE_ENABLED = 1;
SDHCI_STATE_MAX = 1;
SDHCI State Names
SDHCI_STATE_NAMES:array[SDHCI_STATE_DISABLED..SDHCI_STATE_MAX] of String = (
'SDHCI_STATE_DISABLED',
'SDHCI_STATE_ENABLED');

SDHCI host flag SDHCI_FLAG_*

SDHCI_FLAG_NONE = $00000000;
SDHCI_FLAG_SDMA = $00000001;	Host Controller supports SDMA specification
SDHCI_FLAG_ADMA = $00000002;	Host Controller supports ADMA specification
SDHCI_FLAG_SPI = $00000004;	Host Controller uses SPI interface
SDHCI_FLAG_CRC_ENABLE = $00000008;
SDHCI_FLAG_NON_STANDARD = $00000010;	Host Controller uses a non standard interface (not supporting SDHCI register layout)
SDHCI_FLAG_AUTO_CMD12 = $00000020;	Host Controller supports Auto CMD12 (Stop Transmission)
SDHCI_FLAG_AUTO_CMD23 = $00000040;	Host Controller supports Auto CMD23 (Set Block Count)
SDHCI_FLAG_64_BIT_DMA = $00000080;	Host Controller supports 64-bit ADMA
SDHCI_FLAG_EXTERNAL_DMA = $00000100;	Host Controller requires external DMA engine to perform transfers

SDHCI controller register SDHCI_DMA_*, SDHCI_BLOCK_*

SDHCI_DMA_ADDRESS = $00;
SDHCI_BLOCK_SIZE = $04;
SDHCI_BLOCK_COUNT = $06;
SDHCI_ARGUMENT = $08;
SDHCI_TRANSFER_MODE = $0C;
SDHCI_COMMAND = $0E;
SDHCI_RESPONSE = $10;
SDHCI_BUFFER = $20;
SDHCI_PRESENT_STATE = $24;
SDHCI_HOST_CONTROL = $28;
SDHCI_POWER_CONTROL = $29;
SDHCI_BLOCK_GAP_CONTROL = $2A;
SDHCI_WAKE_UP_CONTROL = $2B;
SDHCI_CLOCK_CONTROL = $2C;
SDHCI_TIMEOUT_CONTROL = $2E;
SDHCI_SOFTWARE_RESET = $2F;
SDHCI_INT_STATUS = $30;
SDHCI_INT_ENABLE = $34;
SDHCI_SIGNAL_ENABLE = $38;
SDHCI_ACMD12_ERR = $3C;
3E-3F reserved
SDHCI_CAPABILITIES = $40;
SDHCI_CAPABILITIES_1 = $44;
SDHCI_MAX_CURRENT = $48;
4C-4F reserved for more max current
SDHCI_SET_ACMD12_ERROR = $50;
SDHCI_SET_INT_ERROR = $52;
SDHCI_ADMA_ERROR = $54;
55-57 reserved
SDHCI_ADMA_ADDRESS = $58;
60-FB reserved
SDHCI_SLOT_INT_STATUS = $FC;
SDHCI_HOST_VERSION = $FE;

SDHCI transfer mode SDHCI_TRNS_*

SDHCI_TRNS_DMA = $01;
SDHCI_TRNS_BLK_CNT_EN = $02;
SDHCI_TRNS_AUTO_CMD12 = $04;	SDHCI_TRNS_ACMD12
SDHCI_TRNS_AUTO_CMD23 = $08;
SDHCI_TRNS_READ = $10;
SDHCI_TRNS_MULTI = $20;

SDHCI command value SDHCI_CMD_*

SDHCI_CMD_RESP_MASK = $03;
SDHCI_CMD_CRC = $08;
SDHCI_CMD_INDEX = $10;
SDHCI_CMD_DATA = $20;
SDHCI_CMD_ABORTCMD = $C0;

SDHCI command response value SDHCI_CMD_RESP_*

SDHCI_CMD_RESP_NONE = $00;
SDHCI_CMD_RESP_LONG = $01;
SDHCI_CMD_RESP_SHORT = $02;
SDHCI_CMD_RESP_SHORT_BUSY = $03;

SDHCI present state value SDHCI_DATA_*, SDHCI_CARD_*

SDHCI_CMD_INHIBIT = $00000001;
SDHCI_DATA_INHIBIT = $00000002;
SDHCI_DOING_WRITE = $00000100;
SDHCI_DOING_READ = $00000200;
SDHCI_SPACE_AVAILABLE = $00000400;
SDHCI_DATA_AVAILABLE = $00000800;
SDHCI_CARD_PRESENT = $00010000;
SDHCI_CARD_STATE_STABLE = $00020000;
SDHCI_CARD_DETECT_PIN_LEVEL = $00040000;
SDHCI_WRITE_PROTECT = $00080000;	Set if Write Enabled/Clear if Write Protected

SDHCI host control value SDHCI_CTRL_*

SDHCI_CTRL_LED = $01;
SDHCI_CTRL_4BITBUS = $02;
SDHCI_CTRL_HISPD = $04;
SDHCI_CTRL_DMA_MASK = $18;
SDHCI_CTRL_SDMA = $00;
SDHCI_CTRL_ADMA1 = $08;
SDHCI_CTRL_ADMA32 = $10;
SDHCI_CTRL_ADMA64 = $18;
SDHCI_CTRL_8BITBUS = $20;
SDHCI_CTRL_CD_TEST_INS = $40;
SDHCI_CTRL_CD_TEST = $80;

SDHCI power control value SDHCI_POWER_*

SDHCI_POWER_ON = $01;
SDHCI_POWER_180 = $0A;
SDHCI_POWER_300 = $0C;
SDHCI_POWER_330 = $0E;

SDHCI wakeup control value SDHCI_WAKE_*

SDHCI_WAKE_ON_INT = $01;
SDHCI_WAKE_ON_INSERT = $02;
SDHCI_WAKE_ON_REMOVE = $04;

SDHCI clock control value SDHCI_CLOCK_*

SDHCI_DIVIDER_SHIFT = 8;
SDHCI_DIVIDER_HI_SHIFT = 6;
SDHCI_DIV_MASK = $FF;
SDHCI_DIV_MASK_LEN = 8;
SDHCI_DIV_HI_MASK = $0300;
SDHCI_CLOCK_CARD_EN = $0004;
SDHCI_CLOCK_INT_STABLE = $0002;
SDHCI_CLOCK_INT_EN = $0001;

SDHCI software reset value SDHCI_RESET_*

SDHCI_RESET_ALL = $01;
SDHCI_RESET_CMD = $02;
SDHCI_RESET_DATA = $04;

SDHCI interrupt value SDHCI_INT_*

SDHCI_INT_RESPONSE = $00000001;
SDHCI_INT_DATA_END = $00000002;
SDHCI_INT_BLK_GAP = $00000004;
SDHCI_INT_DMA_END = $00000008;
SDHCI_INT_SPACE_AVAIL = $00000010;
SDHCI_INT_DATA_AVAIL = $00000020;
SDHCI_INT_CARD_INSERT = $00000040;
SDHCI_INT_CARD_REMOVE = $00000080;
SDHCI_INT_CARD_INT = $00000100;
SDHCI_INT_ERROR = $00008000;
SDHCI_INT_TIMEOUT = $00010000;
SDHCI_INT_CRC = $00020000;
SDHCI_INT_END_BIT = $00040000;
SDHCI_INT_INDEX = $00080000;
SDHCI_INT_DATA_TIMEOUT = $00100000;
SDHCI_INT_DATA_CRC = $00200000;
SDHCI_INT_DATA_END_BIT = $00400000;
SDHCI_INT_BUS_POWER = $00800000;
SDHCI_INT_ACMD12ERR = $01000000;
SDHCI_INT_ADMA_ERROR = $02000000;
SDHCI_INT_NORMAL_MASK = $00007FFF;
SDHCI_INT_ERROR_MASK = $FFFF8000;
SDHCI_INT_CMD_MASK = (SDHCI_INT_RESPONSE or SDHCI_INT_TIMEOUT or SDHCI_INT_CRC or SDHCI_INT_END_BIT or SDHCI_INT_INDEX);
SDHCI_INT_DATA_MASK = (SDHCI_INT_DATA_END or SDHCI_INT_DMA_END or SDHCI_INT_DATA_AVAIL or SDHCI_INT_SPACE_AVAIL or SDHCI_INT_DATA_TIMEOUT or SDHCI_INT_DATA_CRC or SDHCI_INT_DATA_END_BIT or SDHCI_INT_ADMA_ERROR or SDHCI_INT_BLK_GAP);
SDHCI_INT_ALL_MASK = (LongWord(-1));

SDHCI capabilities value SDHCI_*_MASK*, SDHCI_*SHIFT

SDHCI_TIMEOUT_CLK_MASK = $0000003F;
SDHCI_TIMEOUT_CLK_SHIFT = 0;
SDHCI_TIMEOUT_CLK_UNIT = $00000080;
SDHCI_CLOCK_BASE_MASK = $00003F00;
SDHCI_CLOCK_V3_BASE_MASK = $0000FF00;
SDHCI_CLOCK_BASE_SHIFT = 8;
SDHCI_CLOCK_BASE_MULTIPLIER = 1000000;
SDHCI_MAX_BLOCK_MASK = $00030000;
SDHCI_MAX_BLOCK_SHIFT = 16;
SDHCI_CAN_DO_8BIT = $00040000;
SDHCI_CAN_DO_ADMA2 = $00080000;
SDHCI_CAN_DO_ADMA1 = $00100000;
SDHCI_CAN_DO_HISPD = $00200000;
SDHCI_CAN_DO_SDMA = $00400000;
SDHCI_CAN_VDD_330 = $01000000;
SDHCI_CAN_VDD_300 = $02000000;
SDHCI_CAN_VDD_180 = $04000000;
SDHCI_CAN_64BIT_V4 = $08000000;
SDHCI_CAN_64BIT = $10000000;

SDHCI host version value SDHCI_*_VER_*

SDHCI_VENDOR_VER_MASK = $FF00;
SDHCI_VENDOR_VER_SHIFT = 8;
SDHCI_SPEC_VER_MASK = $00FF;
SDHCI_SPEC_VER_SHIFT = 0;
SDHCI_SPEC_100 = 0;
SDHCI_SPEC_200 = 1;
SDHCI_SPEC_300 = 2;
SDHCI_SPEC_400 = 3;
SDHCI_SPEC_410 = 4;
SDHCI_SPEC_420 = 5;

SDHCI clock divider SDHCI_MAX_CLOCK_DIV_*

SDHCI_MAX_CLOCK_DIV_SPEC_200 = 256;
SDHCI_MAX_CLOCK_DIV_SPEC_300 = 2046;

SDHCI quirks/bug SDHCI_QUIRK*

From Linux /include/linux/mmc/sdhci.h
SDHCI_QUIRK_CLOCK_BEFORE_RESET = (1 shl 0);	Controller doesn't honor resets unless we touch the clock register
SDHCI_QUIRK_FORCE_DMA = (1 shl 1);	Controller has bad caps bits, but really supports DMA
SDHCI_QUIRK_NO_CARD_NO_RESET = (1 shl 2);	Controller doesn't like to be reset when there is no card inserted
SDHCI_QUIRK_SINGLE_POWER_WRITE = (1 shl 3);	Controller doesn't like clearing the power reg before a change
SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS = (1 shl 4);	Controller has flaky internal state so reset it on each ios change
SDHCI_QUIRK_BROKEN_DMA = (1 shl 5);	Controller has an unusable DMA engine
SDHCI_QUIRK_BROKEN_ADMA = (1 shl 6);	Controller has an unusable ADMA engine
SDHCI_QUIRK_32BIT_DMA_ADDR = (1 shl 7);	Controller can only DMA from 32-bit aligned addresses
SDHCI_QUIRK_32BIT_DMA_SIZE = (1 shl 8);	Controller can only DMA chunk sizes that are a multiple of 32 bits
SDHCI_QUIRK_32BIT_ADMA_SIZE = (1 shl 9);	Controller can only ADMA chunks that are a multiple of 32 bits
SDHCI_QUIRK_RESET_AFTER_REQUEST = (1 shl 10);	Controller needs to be reset after each request to stay stable
SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER = (1 shl 11);	Controller needs voltage and power writes to happen separately
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL = (1 shl 12);	Controller provides an incorrect timeout value for transfers
SDHCI_QUIRK_BROKEN_SMALL_PIO = (1 shl 13);	Controller has an issue with buffer bits for small transfers
SDHCI_QUIRK_NO_BUSY_IRQ = (1 shl 14);	Controller does not provide transfer-complete interrupt when not busy
SDHCI_QUIRK_BROKEN_CARD_DETECTION = (1 shl 15);	Controller has unreliable card detection
SDHCI_QUIRK_INVERTED_WRITE_PROTECT = (1 shl 16);	Controller reports inverted write-protect state
SDHCI_QUIRK_PIO_NEEDS_DELAY = (1 shl 18);	Controller does not like fast PIO transfers
SDHCI_QUIRK_FORCE_BLK_SZ_2048 = (1 shl 20);	Controller has to be forced to use block size of 2048 bytes
SDHCI_QUIRK_NO_MULTIBLOCK = (1 shl 21);	Controller cannot do multi-block transfers
SDHCI_QUIRK_FORCE_1_BIT_DATA = (1 shl 22);	Controller can only handle 1-bit data transfers
SDHCI_QUIRK_DELAY_AFTER_POWER = (1 shl 23);	Controller needs 10ms delay between applying power and clock
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK = (1 shl 24);	Controller uses SDCLK instead of TMCLK for data timeouts
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN = (1 shl 25);	Controller reports wrong base clock capability
SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC = (1 shl 26);	Controller cannot support End Attribute in NOP ADMA descriptor
SDHCI_QUIRK_MISSING_CAPS = (1 shl 27);	Controller is missing device caps. Use caps provided by host
SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 = (1 shl 28);	Controller uses Auto CMD12 command to stop the transfer
SDHCI_QUIRK_NO_HISPD_BIT = (1 shl 29);	Controller doesn't have HISPD bit field in HI-SPEED SD card
SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC = (1 shl 30);	Controller treats ADMA descriptors with length 0000h incorrectly
SDHCI_QUIRK_UNSTABLE_RO_DETECT = (1 shl 31);	The read-only detection via SDHCI_PRESENT_STATE register is unstable
SDHCI_QUIRK2_HOST_OFF_CARD_ON = (1 shl 0);
SDHCI_QUIRK2_HOST_NO_CMD23 = (1 shl 1);
SDHCI_QUIRK2_NO_1_8_V = (1 shl 2);	The system physically doesn't support 1.8v, even if the host does
SDHCI_QUIRK2_PRESET_VALUE_BROKEN = (1 shl 3);
SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON = (1 shl 4);
SDHCI_QUIRK2_BROKEN_HOST_CONTROL = (1 shl 5);	Controller has a non-standard host control register
SDHCI_QUIRK2_BROKEN_HS200 = (1 shl 6);	Controller does not support HS200
SDHCI_QUIRK2_BROKEN_DDR50 = (1 shl 7);	Controller does not support DDR50
SDHCI_QUIRK2_STOP_WITH_TC = (1 shl 8);	Stop command(CMD12) can set Transfer Complete when not using MMC_RSP_BUSY
SDHCI_QUIRK2_BROKEN_64_BIT_DMA = (1 shl 9);	Controller does not support 64-bit DMA
SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD = (1 shl 10);	Need clear transfer mode register before send cmd
SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 = (1 shl 11);	Capability register bit-63 indicates HS400 support
SDHCI_QUIRK2_TUNING_WORK_AROUND = (1 shl 12);	Forced tuned clock
SDHCI_QUIRK2_SUPPORT_SINGLE = (1 shl 13);	Disable the block count for single block transactions
SDHCI_QUIRK2_ACMD23_BROKEN = (1 shl 14);	Controller broken with using ACMD23
SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN = (1 shl 15);	Broken Clock divider zero in controller
SDHCI_QUIRK2_RSP_136_HAS_CRC = (1 shl 16);	Controller has CRC in 136 bit Command Response
SDHCI_QUIRK2_DISABLE_HW_TIMEOUT = (1 shl 17);	Disable HW timeout if the requested timeout is more than the maximum obtainable timeout
SDHCI_QUIRK2_USE_32BIT_BLK_CNT = (1 shl 18);	32-bit block count may not support eMMC where upper bits of CMD23 are used for other purposes. Support 16-bit block count by default otherwise, SDHCI_QUIRK2_USE_32BIT_BLK_CNT can be selected to use 32-bit block count

SDHCI host SDMA buffer boundary SDHCI_DEFAULT_BOUNDARY_*

Valid values from 4K to 512K in powers of 2
SDHCI_DEFAULT_BOUNDARY_SIZE = (512 * 1024);
SDHCI_DEFAULT_BOUNDARY_ARG = (7);

SDHCI timeout value SDHCI_TIMEOUT_VALUE*

SDHCI_TIMEOUT_VALUE = $0E;

Type definitions

---

MMC command

PMMCCommand = ^TMMCCommand;

TMMCCommand = record

Command Properties
Command:Word;
Argument:LongWord;
ResponseType:LongWord;
Response:array[0..3] of LongWord;
Status:LongWord;
Data:PMMCData;
Host Properties
DataCompleted:Boolean;
BusyCompleted:Boolean;
TuningCompleted:Boolean;
CommandCompleted:Boolean;

MMC data

PMMCData = ^TMMCData;

TMMCData = record

Data Properties
Data:Pointer;
Flags:LongWord;
BlockSize:LongWord;
BlockCount:LongWord;
Host Properties
BlockOffset:LongWord;
BlocksRemaining:LongWord;
BytesRemaining:LongWord;
BytesTransfered:LongWord;

MMC card identification data (CID)

PMMCCardIdentificationData = ^TMMCCardIdentificationData;

TMMCCardIdentificationData = record

Note: See: Section 5.2 of SD Physical Layer Simplified Specification Version 4.10
ManufacturerId:Byte;
OEMId:Word;
ProductName:array[0..7] of Char;	Max 0 to 6, 1 extra for null terminator
ProductRevision:Byte;
HardwareRevision:Byte;
FirmwareRevision:Byte;
ProductSerialNumber:LongWord;
ManufacturingMonth:Byte;
ManufacturingYear:Word;
CRC:Byte;	CRC7 checksum

MMC card specific erase data (CSD)

TMMCCardSpecificSDEraseData = record

Note: See: Section 5.3 of SD Physical Layer Simplified Specification Version 4.10 (Defined here for CSD)
EraseBlockEnable:Boolean;	Erase single block enable
SectorSize:Byte;	Erase sector size

MMC card specific MMC22 erase data

TMMCCardSpecificMMC22EraseData = record

SectorSize:Byte;	Erase sector size
EraseGroupSize:Byte;	Erase group size

MMC card specific MMC31 erase data

TMMCCardSpecificMMC31EraseData = record

EraseGroupSize:Byte;	Erase group size
EraseGroupMultiplier:Byte;	Erase group size multiplier

MMC card specific erase data

TMMCCardSpecificEraseData = record

case Integer of
0:(MMC22:TMMCCardSpecificMMC22EraseData);
1:(MMC31:TMMCCardSpecificMMC31EraseData);
2:(SD:TMMCCardSpecificSDEraseData);

MMC card specific data

PMMCCardSpecificData = ^TMMCCardSpecificData;

TMMCCardSpecificData = record

Card Values
CSDStructure:Byte;	CSD structure version
SpecVersion:Byte;	System specification version (MMC/eMMC Only)
TAAC:Byte;	Data read access-time-1
NSAC:Byte;	Data read access-time-2 in CLK cycles (NSAC*100)
TransferSpeed:Byte;	Max. data transfer rate
CCC:Word;	Card command classes
ReadBlockLength:Byte;	Max. read data block length
ReadBlockPartial:Boolean;	Partial blocks for read allowed
WriteBlockMisalign:Boolean;	Write block misalignment
ReadBlockMisalign:Boolean;	Read block misalignment
DSRImplemented:Boolean;	DSR implemented
DeviceSize:Word;	Device size
VDDReadCurrentMin:Byte;	Max. read current @VDD min
VDDReadCurrentMax:Byte;	Max. read current @VDD max
VDDWriteCurrentMin:Byte;	Max. write current @VDD min
VDDWriteCurrentMax:Byte;	Max. write current @VDD max
DeviceSizeMultiplier:Byte;	Device size multiplier
Erase:TMMCCardSpecificEraseData;	Erase group details
WriteProtectGroupSize:Byte;	Write protect group size
WriteProtectGroupEnable:Boolean;	Write protect group enable
DefaultECC:Byte;	Manufacturer default ECC (MMC/eMMC Only)
ReadToWriteFactor:Byte;	Write speed factor
WriteBlockLength:Byte;	Max. write data block length
WriteBlockPartial:Boolean;	Partial blocks for write allowed
ContentProtectApplication:Boolean;	Content protection application (MMC/eMMC Only)
FileFormatGroup:Byte;	File format group
CopyFlag:Boolean;	Copy flag
PermanentWriteProtect:Boolean;	Permanent write protection
TemporaryWriteProtect:Boolean;	Temporary write protection
FileFormat:Byte;	File format
ECC:Byte;	ECC code (MMC/eMMC Only)
CRC:Byte;	CRC
Calculated Values
DataAccessTime:LongWord;	In Nanoseconds
DataAccessClocks:Word;	In Clock cycles
DataTransferRate:LongWord;	In Hz
EraseSize:LongWord;	In Sectors
BlockSize:LongWord;	"Normalized" Block Size
BlockCount:LongWord;	In "Normalized" Blocks
BlockShift:LongWord;	"Normalized" Block Shift

MMC extended card specific data

PMMCExtendedCardSpecificData = ^TMMCExtendedCardSpecificData;

TMMCExtendedCardSpecificData = record

Card Values
Revision:Byte;	Extended CSD revision (192)
PartitionSupport:Byte;	Partitioning Support (160)
EraseGroupDef:Byte;	High-density erase group definition (175)
PartConfig:Byte;	Partition configuration (179)
StrobeSupport:Byte;	Strobe Support (184)
CSDStructure:Byte;	CSD STRUCTURE (194)
CardType:Byte;	Device type (196)
DriverStrength:Byte;	I/O Driver Strength (197)
SectorCount:array[0..3] of Byte;	Sector Count (212 - 4 bytes)
SATimeout:Byte;	Sleep/awake timeout (217)
HCEraseGapSize:Byte;	High-capacity write protect group size (221)
ReliableSectors:Byte;	Reliable write sector count (222)
EraseTimeoutMult:Byte;	High-capacity erase timeout (223)
HCEraseGrpSize:Byte;	High-capacity erase unit size (224)
SecTRIMMult:Byte;	Secure TRIM Multiplier (229)
SecEraseMult:Byte;	Secure Erase Multiplier (230)
SecFeatureSupport:Byte;	Secure Feature support (231)
TRIMMult:Byte;	TRIM Multiplier (232)
Calculated Values
Sectors:LongWord;
SleepAwakeTime:LongWord;	100ns
PartitionSwitchTime:LongWord;	ms
HCEraseSize:LongWord;	Sectors
HCEraseTimeout:LongWord;	Milliseconds
DataSectorSize:LongWord;	512 bytes or 4KB

SD status data (SSR)

PSDStatusData = ^TSDStatusData;

TSDStatusData = record

Note: See: Section 4.10.2 of SD Physical Layer Simplified Specification Version 4.10 (Defined here for MMC Device)
Card Values
BusWidth:Byte;	Shows the currently defined data bus width that was defined by SET_BUS_WIDTH command
SecuredMode:Boolean;	Card is in Secured Mode of operation (refer to the "Part 3 Security Specification")
CardType:Word;	In the future, the 8 LSBs will be used to define different variations of an SD Memory Card (Each bit will define different SD Types). The 8 MSBs will be used to define SD Cards that do not comply with the Physical Layer Specification
ProtectedSize:LongWord;	Size of protected area
SpeedClass:Byte;	Speed Class of the card
PerformanceMove:Byte;	Performance of move indicated by 1 [MB/s] step
EraseSize:Word;	Number of AUs to be erased at a time
EraseTimeout:Byte;	Timeout value for erasing areas specified by UNIT_OF_ERASE_AU
EraseOffset:Byte;	Fixed offset value added to erase time
UHSSpeedGrade:Byte;	Speed Grade for UHS mode
Calculated Values
AllocationUnitSize:Byte;	Size of Allocation Unit
UHSAllocationUnitSize:Byte;	Size of Allocation Unit for UHS mode

SD switch data

PSDSwitchData = ^TSDSwitchData;

TSDSwitchData = record

Note: See: Section 4.3.10 of SD Physical Layer Simplified Specification Version 4.10
Card Values
MaximumCurrent:Word;	Maximum Current/Power Consumption
Group6Support:Word;	Support Bits of Functions in Function Group 6
Group5Support:Word;	Support Bits of Functions in Function Group 5
Group4Support:Word;	Support Bits of Functions in Function Group 4
Group3Support:Word;	Support Bits of Functions in Function Group 3
Group2Support:Word;	Support Bits of Functions in Function Group 2
Group1Support:Word;	Support Bits of Functions in Function Group 1
Group6Selection:Byte;	Function Selection of Function Group 6
Group5Selection:Byte;	Function Selection of Function Group 5
Group4Selection:Byte;	Function Selection of Function Group 4
Group3Selection:Byte;	Function Selection of Function Group 3
Group2Selection:Byte;	Function Selection of Function Group 2
Group1Selection:Byte;	Function Selection of Function Group 1
StructureVersion:Byte;	Data Structure Version
Group6BusyStatus:Word;	Busy Status of functions in group 6
Group5BusyStatus:Word;	Busy Status of functions in group 5
Group4BusyStatus:Word;	Busy Status of functions in group 4
Group3BusyStatus:Word;	Busy Status of functions in group 3
Group2BusyStatus:Word;	Busy Status of functions in group 2
Group1BusyStatus:Word;	Busy Status of functions in group 1

SD configuration data (SCR)

PSDConfigurationData = ^TSDConfigurationData;

TSDConfigurationData = record

Note: See: Section 5.6 of SD Physical Layer Simplified Specification Version 4.10 (Defined here for MMC Device)
Card Values
SCRStructure:Byte;	SCR Structure version
SpecVersion:Byte;	SD Memory Card - Spec. Version
DataAfterErase:Byte;	Data status after erases
Security:Byte;	CPRM Security Support
SpecVersion3:Boolean;	Spec. Version 3.00 or higher
ExtendedSecurity:Byte;	Extended Security Support
SpecVersion4:Boolean;	Spec. Version 4.00 or higher
CommandSupport:Byte;	Command Support bits
Calculated Values
ErasedByte:Byte;	Value after Erase

MMC enumeration callback

TMMCEnumerate = function(MMC:PMMCDevice; Data:Pointer):LongWord;

MMC notification callback

TMMCNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;

MMC device initialize

TMMCDeviceInitialize = function(MMC:PMMCDevice):LongWord;

MMC device deinitialize

TMMCDeviceDeinitialize = function(MMC:PMMCDevice):LongWord;

MMC device get card detect

TMMCDeviceGetCardDetect = function(MMC:PMMCDevice):LongWord;

MMC device get write protect

TMMCDeviceGetWriteProtect = function(MMC:PMMCDevice):LongWord;

MMC device send command

TMMCDeviceSendCommand = function(MMC:PMMCDevice; Command:PMMCCommand):LongWord;

MMC device set IOS

TMMCDeviceSetIOS = function(MMC:PMMCDevice):LongWord;

MMC device types

PMMCDevice = ^TMMCDevice;

TMMCDevice = record

Device Properties
Device:TDevice;	The Device entry for this MMC
MMC Properties
MMCId:LongWord;	Unique Id of this MMC in the MMC table
MMCState:LongWord;	MMC state (eg MMC_STATE_INSERTED)
DeviceInitialize:TMMCDeviceInitialize;	A Device specific DeviceInitialize method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceDeinitialize:TMMCDeviceDeinitialize;	A Device specific DeviceDeinitialize method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceGetCardDetect:TMMCDeviceGetCardDetect;	A Device specific DeviceGetCardDetect method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceGetWriteProtect:TMMCDeviceGetWriteProtect;	A Device specific DeviceGetWriteProtect method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceSendCommand:TMMCDeviceSendCommand;	A Device specific DeviceSendCommand method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceSetIOS:TMMCDeviceSetIOS;	A Device specific DeviceSetIOS method implementing a standard MMC device interface (Or nil if the default method is suitable)
Statistics Properties
CommandCount:LongWord;
CommandErrors:LongWord;
Driver Properties
Lock:TMutexHandle;	Device lock
Version:LongWord;
Clock:LongWord;
Timing:LongWord;
BusWidth:LongWord;
Voltages:LongWord;
Capabilities:LongWord;
Register Properties
See: Table 3-2: SD Memory Card Registers of SD Physical Layer Simplified Specification Version 4.10
InterfaceCondition:LongWord;	Interface Condition Result
OperationCondition:LongWord;	Operation Condition Register (OCR) See: Section 5.1 of SD Physical Layer Simplified Specification Version 4.10
RelativeCardAddress:LongWord;	Relative Card Address (RCA) (Word) See: Section 5.4 of SD Physical Layer Simplified Specification Version 4.10
CardSpecific:array[0..3] of LongWord;	Card Specific Data (CSD) See: Section 5.3 of SD Physical Layer Simplified Specification Version 4.10
CardIdentification:array[0..3] of LongWord;	Card Identification Data (CID) See: Section 5.2 of SD Physical Layer Simplified Specification Version 4.10
ExtendedCardSpecific:PByte;	Extended Card Specific Data (EXTCSD) See: Section 7.4 of Embedded Multi-Media Card (eMMC) Electrical Standard 5.1
CardStatus:LongWord;	Card Status Register (CSR) See: Section 4.10.1 of SD Physical Layer Simplified Specification Version 4.10
DriverStage:LongWord;	Driver Stage Register (DSR) (Word) See: Section 5.5 of SD Physical Layer Simplified Specification Version 4.10
SDStatus:array[0..15] of LongWord;	SD Status Register (SSR) See: Section 4.10.2 of SD Physical Layer Simplified Specification Version 4.10
SDSwitch:array[0..15] of LongWord;	SD Switch Status See: Section 4.3.10 of SD Physical Layer Simplified Specification Version 4.10
SDConfiguration:array[0..1] of LongWord;	SD Configuration Register (SCR) See: Section 5.6 of SD Physical Layer Simplified Specification Version 4.10
Configuration Properties
CardSpecificData:TMMCCardSpecificData;
CardIdentificationData:TMMCCardIdentificationData;
ExtendedCardSpecificData:TMMCExtendedCardSpecificData;
SDStatusData:TSDStatusData;
SDSwitchData:TSDSwitchData;
SDConfigurationData:TSDConfigurationData;
Storage Properties
Storage:PStorageDevice;	The Storage entry for this MMC (Where Applicable)
Internal Properties
Prev:PMMCDevice;	Previous entry in MMC table
Next:PMMCDevice;	Next entry in MMC table

SDIO driver

PSDIODriver = ^TSDIODriver;

TSDIODriver = record

Driver Properties
Driver:TDriver;	The Driver entry for this SDIO Driver
SDIO Properties
DriverBind:TSDIODriverBind;	A Driver specific DriverBind method implementing the standard SDIO driver interface
DriverUnbind:TSDIODriverUnbind;	A Driver specific DriverUnbind method implementing the standard SDIO driver interface
Interface Properties
Lock:TMutexHandle;	Driver lock
Internal Properties
Prev:PSDIODriver;	Previous entry in Driver table
Next:PSDIODriver;	Next entry in Driver table

SDIO driver enumeration callback

TSDIODriverEnumerate = function(Driver:PSDIODriver;Data:Pointer):LongWord;

SDIO driver bind callback

TSDIODriverBind = function(Device:PSDIODevice):LongWord;

SDIO driver unbind callback

TSDIODriverUnbind = function(Device:PSDIODevice):LongWord;

SDIO device

PSDIODevice = ^TSDIODevice;

TSDIODevice = record

MMC Properties
MMC:TMMCDevice;	The MMC device entry for this SDIO device
SDIO Properties
SDIOState:LongWord;	SDIO device state (eg SDIO_STATE_ATTACHED)
SDIOStatus:LongWord;	SDIO device status (eg SDIO_STATUS_BOUND)
Host:PDevice;	Host controller this SDIO device is connected to
Driver:PSDIODriver;	Driver this SDIO device is bound to, if any.

SDIO device bind callback

TSDIODeviceBind = function(Device:PSDIODevice):LongWord;

SDIO device unbind callback

TSDIODeviceUnbind = function(Device:PSDIODevice; Driver:PSDIODriver):LongWord;

SDIO device enumeration callback

TSDIODeviceEnumerate = function(Device:PSDIODevice; Data:Pointer):LongWord;

SDIO device notification callback

TSDIODeviceNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;

SDHCI enumeration callback

TSDHCIEnumerate = function(SDHCI:PSDHCIHost; Data:Pointer):LongWord;

SDHCI notification callback

TSDHCINotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;

SDHCI host start

TSDHCIHostStart = function(SDHCI:PSDHCIHost):LongWord;

SDHCI host stop

TSDHCIHostStop = function(SDHCI:PSDHCIHost):LongWord;

SDHCI host read byte

TSDHCIHostReadByte = function(SDHCI:PSDHCIHost; Reg:LongWord):Byte;

SDHCI host read word

TSDHCIHostReadWord = function(SDHCI:PSDHCIHost; Reg:LongWord):Word;

SDHCI host read long

TSDHCIHostReadLong = function(SDHCI:PSDHCIHost; Reg:LongWord):LongWord;

SDHCI host write byte

TSDHCIHostWriteByte = procedure(SDHCI:PSDHCIHost; Reg:LongWord; Value:Byte);

SDHCI host write word

TSDHCIHostWriteWord = procedure(SDHCI:PSDHCIHost; Reg:LongWord; Value:Word);

SDHCI host write long

TSDHCIHostWriteLong = procedure(SDHCI:PSDHCIHost; Reg:LongWord; Value:LongWord);

SDHCI host reset

TSDHCIHostReset = function(SDHCI:PSDHCIHost; Mask:Byte):LongWord;

SDHCI host hardware reset

TSDHCIHostHardwareReset = function(SDHCI:PSDHCIHost):LongWord;

SDHCI host set power

TSDHCIHostSetPower = function(SDHCI:PSDHCIHost; Power:Word):LongWord;

SDHCI host set clock

TSDHCIHostSetClock = function(SDHCI:PSDHCIHost; Clock:LongWord):LongWord;

SDHCI host set clock divider

TSDHCIHostSetClockDivider = function(SDHCI:PSDHCIHost; Index:Integer; Divider:LongWord):LongWord;

SDHCI host set control register

TSDHCIHostSetControlRegister = function(SDHCI:PSDHCIHost):LongWord;

SDHCI host types

PSDHCIHost = ^TSDHCIHost;

TSDHCIHost = record

Device Properties
Device:TDevice;	The Device entry for this SDHCI
SDHCI Properties
SDHCIId:LongWord;	Unique Id of this SDHCI in the SDHCI table
SDHCIState:LongWord;	SDHCI state (eg SDHCI_STATE_ENABLED)
HostStart:TSDHCIHostStart;	A Host specific HostStart method implementing a standard SDHCI host interface
HostStop:TSDHCIHostStop;	A Host specific HostStop method implementing a standard SDHCI host interface
HostReadByte:TSDHCIHostReadByte;	A Host specific HostReadByte method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostReadWord:TSDHCIHostReadWord;	A Host specific HostReadWord method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostReadLong:TSDHCIHostReadLong;	A Host specific HostReadLong method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostWriteByte:TSDHCIHostWriteByte;	A Host specific HostWriteByte method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostWriteWord:TSDHCIHostWriteWord;	A Host specific HostWriteWord method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostWriteLong:TSDHCIHostWriteLong;	A Host specific HostWriteLong method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostReset:TSDHCIHostReset;	A Host specific HostReset method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostHardwareReset:TSDHCIHostHardwareReset;	A Host specific HostHardwareReset method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostSetPower:TSDHCIHostSetPower;	A Host specific HostSetPower method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostSetClock:TSDHCIHostSetClock;	A Host specific HostSetClock method implementing a standard SDHCI host interface (Or nil if the default method is suitable)
HostSetClockDivider:TSDHCIHostSetClockDivider;
HostSetControlRegister:TSDHCIHostSetControlRegister;
DeviceInitialize:TMMCDeviceInitialize;	A Device specific DeviceInitialize method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceDeinitialize:TMMCDeviceDeinitialize;	A Device specific DeviceDeinitialize method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceGetCardDetect:TMMCDeviceGetCardDetect;	A Device specific DeviceGetCardDetect method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceGetWriteProtect:TMMCDeviceGetWriteProtect;	A Device specific DeviceGetWriteProtect method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceSendCommand:TMMCDeviceSendCommand;	A Device specific DeviceSendCommand method implementing a standard MMC device interface (Or nil if the default method is suitable)
DeviceSetIOS:TMMCDeviceSetIOS;	A Device specific DeviceSetIOS method implementing a standard MMC device interface (Or nil if the default method is suitable)
Driver Properties
Lock:TMutexHandle;	Host lock
Address:Pointer;	Host register base address
Version:LongWord;	Host version information
Quirks:LongWord;	Host quirks/bugs flags
Quirks2:LongWord;	Host additional quirks/bugs flags
Clock:LongWord;	Host current clock
BusWidth:LongWord;	Host current bus width
Interrupts:LongWord;	Host interrupts to be handled
Voltages:LongWord;	Host configured voltage flags
Capabilities:LongWord;	Host configured capabilities flags
MinimumFrequency:LongWord;	Host configured minimum frequency
MaximumFrequency:LongWord;	Host configured maximum frequency
MaximumBlockCount:LongWord;	Host configured maximum block count
Command:PMMCCommand;	Currently processing command
Wait:TSemaphoreHandle;	Command completed semaphore
Configuration Properties
PresetVoltages:LongWord;	Host predefined voltage flags
PresetCapabilities:LongWord;	Host predefined capabilities flags
ClockMinimum:LongWord;	Host predefined minimum clock frequency
ClockMaximum:LongWord;	Host predefined maximum clock frequency
DriverStageRegister:LongWord;	Host predefined driver stage register (DSR)
Statistics Properties
InterruptCount:LongWord;	Number of interrupt requests received by the host
Internal Properties
Prev:PSDHCIHost;	Previous entry in SDHCI table
Next:PSDHCIHost;	Next entry in SDHCI table

Public variables

---

MMC logging

MMC_DEFAULT_LOG_LEVEL:LongWord = MMC_LOG_LEVEL_DEBUG;

Minimum level for MMC messages. Only messages with level greater than or equal to this will be printed.

MMC_LOG_ENABLED:Boolean;

Function declarations

---

Initialization functions

procedure MMCInit;

Description: To be documented

Note	None documented

function MMCStart:LongWord;

Description: To be documented

Note	None documented

function MMCStop:LongWord;

Description: To be documented

Note	None documented

procedure MMCAsyncStart(SDHCI:PSDHCIHost);

Description: To be documented

Note	None documented

MMC functions

function MMCDeviceReadBlocks(MMC:PMMCDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceWriteBlocks(MMC:PMMCDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceEraseBlocks(MMC:PMMCDevice; const Start,Count:Int64):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceGoIdle(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetClock(MMC:PMMCDevice; Clock:LongWord):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetBusWidth(MMC:PMMCDevice; Width:LongWord):LongWord;

Description: To be documented

Reference	Section 3.4 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf

function MMCDeviceSetBlockLength(MMC:PMMCDevice; Length:LongWord):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetBlockCount(MMC:PMMCDevice; Count:LongWord; Relative:Boolean):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetDriverStage(MMC:PMMCDevice; DriverStage:LongWord):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceStopTransmission(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSelectCard(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceDeselectCard(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSwitch(MMC:PMMCDevice; Setting,Index,Value:Byte):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendCardStatus(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendCardSpecific(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceDecodeCardSpecific(MMC:PMMCDevice):LongWord;

Description: Given a 128-bit response, decode to our card CSD structure

Note	None documented

function MMCDeviceSendCardIdentification(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendAllCardIdentification(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceDecodeCardIdentification(MMC:PMMCDevice):LongWord;

Description: Given a 128-bit response, decode to our card CID structure

Note	None documented

function MMCDeviceGetExtendedCardSpecific(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendExtendedCardSpecific(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceDecodeExtendedCardSpecific(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetRelativeAddress(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSPISetCRC(MMC:PMMCDevice; Enable:Boolean):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSPIReadOperationCondition(MMC:PMMCDevice; HighCapacity:Boolean):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceInsert(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceRemove(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceInitialize(MMC:PMMCDevice):LongWord;

Description: To be documented

Reference	Section 3.6 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf

function MMCDeviceDeinitialize(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceGetCardDetect(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceGetWriteProtect(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSendCommand(MMC:PMMCDevice; Command:PMMCCommand):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceSetIOS(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceCreate:PMMCDevice;

Description: Create a new MMC entry

Return	Pointer to new MMC entry or nil if MMC could not be created

function MMCDeviceCreateEx(Size:LongWord):PMMCDevice;

Description: Create a new MMC entry

Size	Size in bytes to allocate for new MMC (Including the MMC entry)
Return	Pointer to new MMC entry or nil if MMC could not be created

function MMCDeviceDestroy(MMC:PMMCDevice):LongWord;

Description: Destroy an existing MMC entry

Note	None documented

function MMCDeviceRegister(MMC:PMMCDevice):LongWord;

Description: Register a new MMC in the MMC table

Note	None documented

function MMCDeviceDeregister(MMC:PMMCDevice):LongWord;

Description: Deregister a MMC from the MMC table

Note	None documented

function MMCDeviceFind(MMCId:LongWord):PMMCDevice;

Description: To be documented

Note	None documented

function MMCDeviceFindByDevice(Device:PDevice):PMMCDevice;

Description: Find an MMC/SD device by the matching DeviceData property

Device	The device entry to match with the DeviceData value
Return	The MMC/SD device matched or nil if none found

function MMCDeviceFindByName(const Name:String):PMMCDevice; inline;

Description: To be documented

Note	None documented

function MMCDeviceFindByDescription(const Description:String):PMMCDevice; inline;

Description: To be documented

Note	None documented

function MMCDeviceEnumerate(Callback:TMMCEnumerate; Data:Pointer):LongWord;

Description: To be documented

Note	None documented

function MMCDeviceNotification(MMC:PMMCDevice; Callback:TMMCNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;

Description: To be documented

Note	None documented

SD functions

function SDDeviceSwitch(MMC:PMMCDevice; Mode,Group:Integer; Value:Byte; Buffer:Pointer):LongWord;

Description: To be documented

Buffer	Buffer must point to a 64 byte buffer for Switch Status information
Note	See 4.3.10 of SD Physical Layer Simplified Specification V4.10

function SDDeviceSwitchHighspeed(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceSetBusSpeed(MMC:PMMCDevice; Speed:LongWord):LongWord;

Description: To be documented

Note	None documented

function SDDeviceSetBusWidth(MMC:PMMCDevice; Width:LongWord):LongWord;

Description: To be documented

Note	See Table 4-30 in Section 4.7.4 of SD Physical Layer Simplified Specification V4.10

function SDDeviceSendInterfaceCondition(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	See 4.3.13 of SD Physical Layer Simplified Specification V4.10. CMD8 (SEND_IF_COND) must be invoked to support SD 2.0 cards. The card must be in Idle State before issuing this command. This command will fail harmlessly for SD 1.0 cards.

function SDDeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;

Description: To be documented

Note	See 4.2.3.1 of SD Physical Layer Simplified Specification V4.10

function SDDeviceGetCardSpecific(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceDecodeCardSpecific(MMC:PMMCDevice):LongWord;

Description: Given a 128-bit response, decode to our card CSD structure

Note	None documented

function SDDeviceGetCardIdentification(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceDecodeCardIdentification(MMC:PMMCDevice):LongWord;

Description: Given a 128-bit response, decode to our card CID structure

Note	None documented

function SDDeviceSendSDStatus(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceDecodeSDStatus(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceSendSDSwitch(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceDecodeSDSwitch(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceSendSDConfiguration(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceDecodeSDConfiguration(MMC:PMMCDevice):LongWord;

Description: Given a 64-bit response, decode to our card SCR structure

Note	None documented

function SDDeviceSendRelativeAddress(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	None documented

function SDDeviceSendApplicationCommand(MMC:PMMCDevice; Command:PMMCCommand):LongWord;

Description: To be documented

Note	None documented

SDIO functions

function SDIODeviceReset(MMC:PMMCDevice):LongWord;

Description: To be documented

Note	See SDIO Simplified Specification V2.0, 4.4 Reset for SDIO

function SDIODeviceSendOperationCondition(MMC:PMMCDevice; Probe:Boolean):LongWord;

Description: To be documented

Note	None documented

function SDIODeviceReadWriteDirect(MMC:PMMCDevice; Write:Boolean; Operation,Address:LongWord; Input:Byte; Output:PByte):LongWord;

Description: To be documented

Note	None documented

function SDIODeviceReadWriteExtended(MMC:PMMCDevice; Write:Boolean; Operation,Address:LongWord; Increment:Boolean; Buffer:Pointer; BlockCount,BlockSize:LongWord):LongWord;

Description: To be documented

Note	None documented

SDHCI functions

function SDHCIHostReset(SDHCI:PSDHCIHost; Mask:Byte):LongWord;

Description: To be documented

Reference	Section 3.3 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf

function SDHCIHostSetPower(SDHCI:PSDHCIHost; Power:Word):LongWord;

Description: To be documented

Reference	Section 3.3 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf

function SDHCIHostSetClock(SDHCI:PSDHCIHost; Clock:LongWord):LongWord;

Description: To be documented

Reference	Section 3.2 of SD Host Controller Simplified Specification V3.0 partA2_300.pdf

function SDHCIHostTransferPIO(SDHCI:PSDHCIHost):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostTransferDMA(SDHCI:PSDHCIHost):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostFinishCommand(SDHCI:PSDHCIHost):LongWord;

Description: Called by Interrupt Command handler when an SDHCI_INT_RESPONSE is received

Note	None documented

function SDHCIHostFinishData(SDHCI:PSDHCIHost):LongWord;

Description: Called by Interrupt Data handler when data is received

Note	None documented

function SDHCIHostCommandInterrupt(SDHCI:PSDHCIHost; InterruptMask:LongWord; var ReturnMask:LongWord):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostDataInterrupt(SDHCI:PSDHCIHost; InterruptMask:LongWord):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostStart(SDHCI:PSDHCIHost):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostStop(SDHCI:PSDHCIHost):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostReadByte(SDHCI:PSDHCIHost; Reg:LongWord):Byte; inline;

Description: To be documented

Note	None documented

function SDHCIHostReadWord(SDHCI:PSDHCIHost; Reg:LongWord):Word; inline;

Description: To be documented

Note	None documented

function SDHCIHostReadLong(SDHCI:PSDHCIHost; Reg:LongWord):LongWord; inline;

Description: To be documented

Note	None documented

procedure SDHCIHostWriteByte(SDHCI:PSDHCIHost; Reg:LongWord; Value:Byte); inline;

Description: To be documented

Note	None documented

procedure SDHCIHostWriteWord(SDHCI:PSDHCIHost; Reg:LongWord; Value:Word); inline;

Description: To be documented

Note	None documented

procedure SDHCIHostWriteLong(SDHCI:PSDHCIHost; Reg:LongWord; Value:LongWord); inline;

Description: To be documented

Note	None documented

function SDHCIHostSetClockDivider(SDHCI:PSDHCIHost; Index:Integer; Divider:LongWord):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostSetControlRegister(SDHCI:PSDHCIHost):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostCreate:PSDHCIHost;

Description: Create a new SDHCI entry

Return	Pointer to new SDHCI entry or nil if SDHCI could not be created

function SDHCIHostCreateEx(Size:LongWord):PSDHCIHost;

Description: Create a new SDHCI entry

Size	Size in bytes to allocate for new SDHCI (Including the SDHCI entry)
Return	Pointer to new SDHCI entry or nil if SDHCI could not be created

function SDHCIHostDestroy(SDHCI:PSDHCIHost):LongWord;

Description: Destroy an existing SDHCI entry

Note	None documented

function SDHCIHostRegister(SDHCI:PSDHCIHost):LongWord;

Description: Register a new SDHCI in the SDHCI table

Note	None documented

function SDHCIHostDeregister(SDHCI:PSDHCIHost):LongWord;

Description: Deregister a SDHCI from the SDHCI table

Note	None documented

function SDHCIHostFind(SDHCIId:LongWord):PSDHCIHost;

Description: To be documented

Note	None documented

function SDHCIHostEnumerate(Callback:TSDHCIEnumerate; Data:Pointer):LongWord;

Description: To be documented

Note	None documented

function SDHCIHostNotification(SDHCI:PSDHCIHost; Callback:TSDHCINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;

Description: To be documented

Note	None documented

MMC helper functions

function MMCGetCount:LongWord; inline;

Description: Get the current MMC count

Note	None documented

function MMCDeviceCheck(MMC:PMMCDevice):PMMCDevice;

Description: Check if the supplied MMC is in the MMC table

Note	None documented

function MMCIsSD(MMC:PMMCDevice):Boolean;

Description: To be documented

Note	None documented

function MMCGetCIDValue(MMC:PMMCDevice; Version,Value:LongWord):LongWord;

Description: Extract a CID field value from the 128 bit Card Identification register

Note	None documented

function MMCGetCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract a CSD field value from the 128 bit Card Specific register

Note	None documented

function MMCGetExtendedCSDValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract an Extended CSD field value from the 512 byte Extended Card Specific register

Note	None documented

function MMCExtractBits(Buffer:Pointer; Start,Size:LongWord):LongWord;

Description: To be documented

Start	Start is the starting bit to extract
Size	Size is the number of bits to extract
Note	Start is the LSB so to extract 8 bits from 127 to 120 then Start would be 120 and Size would be 8

function MMCExtractBitsEx(Buffer:Pointer; Length,Start,Size:LongWord):LongWord;

Description: To be documented

Length	Length is the size of the buffer in LongWords
Start	Start is the starting bit to extract
Size	Size is the number of bits to extract
Note	Start is the LSB so to extract 8 bits from 127 to 120 then Start would be 120 and Size would be 8. For a 128 bit buffer (16 bytes) Length would be 4. For a 512 bit buffer (64 bytes) Length would be 16.

function MMCIsMultiCommand(Command:Word):Boolean;

Description: To be documented

Note	None documented

function MMCStatusToString(Status:LongWord):String;

Description: Translates an MMC status code into a string describing it

Note	None documented

function MMCDeviceTypeToString(MMCType:LongWord):String;

Description: To be documented

Note	None documented

function MMCDeviceStateToString(MMCState:LongWord):String;

Description: To be documented

Note	None documented

procedure MMCLog(Level:LongWord; MMC:PMMCDevice; const AText:String);

Description: To be documented

Note	None documented

procedure MMCLogInfo(MMC:PMMCDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure MMCLogWarn(MMC:PMMCDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure MMCLogError(MMC:PMMCDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure MMCLogDebug(MMC:PMMCDevice; const AText:String); inline;

Description: To be documented

Note	None documented

SD helper functions

function SDGetMaxClock(MMC:PMMCDevice):LongWord;

Description: Determine the Maximum Clock (DTR) for the current card

Note	None documented

function SDGetCIDValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract a CID field value from the 128 bit Card Identification register

Note	None documented

function SDGetCSDValue(MMC:PMMCDevice; Version,Value:LongWord):LongWord;

Description: Extract a CSD field value from the 128 bit Card Specific register

Note	None documented

function SDGetSCRValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract an SCR field value from the 64 bit SD Configuration register

Note	None documented

function SDGetSSRValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract an SCR field value from the 512 bit SD Status register

Note	None documented

function SDGetSwitchValue(MMC:PMMCDevice; Value:LongWord):LongWord;

Description: Extract a Switch field value from the 512 bit SD Switch status

Note	None documented

SDHCI helper functions

function SDHCIGetCount:LongWord; inline;

Description: Get the current SDHCI count

Note	None documented

function SDHCIHostCheck(SDHCI:PSDHCIHost):PSDHCIHost;

Description: Check if the supplied SDHCI is in the SDHCI table

Note	None documented

function SDHCIIsSPI(SDHCI:PSDHCIHost):Boolean;

Description: To be documented

Note	None documented

function SDHCIGetVersion(SDHCI:PSDHCIHost):Word;

Description: To be documented

Note	None documented

function SDHCIGetCommand(Command:Word):Word;

Description: To be documented

Note	None documented

function SDHCIMakeCommand(Command,Flags:Word):Word;

Description: To be documented

Note	None documented

function SDHCIMakeBlockSize(DMA,BlockSize:Word):Word;

Description: To be documented

Note	None documented

function SDHCIDeviceTypeToString(SDHCIType:LongWord):String;

Description: To be documented

Note	None documented

function SDHCIDeviceStateToString(SDHCIState:LongWord):String;

Description: To be documented

Note	None documented

MMC storage functions

function MMCStorageDeviceRead(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function MMCStorageDeviceWrite(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function MMCStorageDeviceErase(Storage:PStorageDevice; const Start,Count:Int64):LongWord;

Description: To be documented

Note	None documented

function MMCStorageDeviceControl(Storage:PStorageDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;

Description: To be documented

Note	None documented

Return to Unit Reference