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/*
**********************************************************************
*
* uC/MMC
*
* (c) Copyright 2005 - 2007, Ingenic Semiconductor, Inc
* All rights reserved.
*
***********************************************************************
----------------------------------------------------------------------
File : mmc_protocol.h
Purpose : MMC protocol definitions.
----------------------------------------------------------------------
Version-Date-----Author-Explanation
----------------------------------------------------------------------
1.00.00 20060831 WeiJianli First release
----------------------------------------------------------------------
Known problems or limitations with current version
----------------------------------------------------------------------
(none)
---------------------------END-OF-HEADER------------------------------
*/
#ifndef __MMC_PROTOCOL__
#define __MMC_PROTOCOL__
/* Standard MMC/SD clock speeds */
#define MMC_CLOCK_SLOW 400000 /* 400 kHz for initial setup */
#define MMC_CLOCK_FAST 20000000 /* 20 MHz for maximum for normal operation */
#define SD_CLOCK_FAST 24000000 /* 24 MHz for SD Cards */
/* Extra MMC commands for state control */
/* Use negative numbers to disambiguate */
#define MMC_CIM_RESET -1
/* Standard MMC commands (3.1) type argument response */
/* class 1 */
#define MMC_GO_IDLE_STATE 0 /* bc */
#define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
#define MMC_ALL_SEND_CID 2 /* bcr R2 */
#define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
#define MMC_SET_DSR 4 /* bc [31:16] RCA */
#define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
#define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
#define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
#define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
/* class 2 */
#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
/* class 3 */
#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
/* class 4 */
#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
#define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
#define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
#define MMC_PROGRAM_CID 26 /* adtc R1 */
#define MMC_PROGRAM_CSD 27 /* adtc R1 */
/* class 6 */
#define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
#define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
/* class 5 */
#define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
#define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
#define MMC_ERASE 37 /* ac R1b */
/* class 9 */
#define MMC_FAST_IO 39 /* ac <Complex> R4 */
#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
/* class 7 */
#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
/* class 8 */
#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1b */
/* SD class */
#define SD_SEND_OP_COND 41 /* bcr [31:0] OCR R3 */
#define SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
#define SEND_SCR 51 /* adtc [31:0] staff R1 */
/* Don't change the order of these; they are used in dispatch tables */
enum mmc_rsp_t {
RESPONSE_NONE = 0,
RESPONSE_R1 = 1,
RESPONSE_R1B = 2,
RESPONSE_R2_CID = 3,
RESPONSE_R2_CSD = 4,
RESPONSE_R3 = 5,
RESPONSE_R4 = 6,
RESPONSE_R5 = 7,
RESPONSE_R6 = 8,
};
/*
MMC status in R1
Type
e : error bit
s : status bit
r : detected and set for the actual command response
x : detected and set during command execution. the host must poll
the card by sending status command in order to read these bits.
Clear condition
a : according to the card state
b : always related to the previous command. Reception of
a valid command will clear it (with a delay of one command)
c : clear by read
*/
#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
#define R1_ERASE_PARAM (1 << 27) /* ex, c */
#define R1_WP_VIOLATION (1 << 26) /* erx, c */
#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
#define R1_CC_ERROR (1 << 20) /* erx, c */
#define R1_ERROR (1 << 19) /* erx, c */
#define R1_UNDERRUN (1 << 18) /* ex, c */
#define R1_OVERRUN (1 << 17) /* ex, c */
#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
#define R1_ERASE_RESET (1 << 13) /* sr, c */
#define R1_STATUS(x) (x & 0xFFFFE000)
#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
#define R1_APP_CMD (1 << 7) /* sr, c */
enum card_state {
CARD_STATE_EMPTY = -1,
CARD_STATE_IDLE = 0,
CARD_STATE_READY = 1,
CARD_STATE_IDENT = 2,
CARD_STATE_STBY = 3,
CARD_STATE_TRAN = 4,
CARD_STATE_DATA = 5,
CARD_STATE_RCV = 6,
CARD_STATE_PRG = 7,
CARD_STATE_DIS = 8,
};
/* These are unpacked versions of the actual responses */
struct mmc_response_r1 {
u8 cmd;
u32 status;
};
typedef struct mmc_cid {
u8 mid;
u16 oid;
u8 pnm[7]; /* Product name (we null-terminate) */
u8 prv;
u32 psn;
u8 mdt;
}mmc_cid_t;
typedef struct mmc_csd {
u8 csd_structure;
u8 spec_vers;
u8 taac;
u8 nsac;
u8 tran_speed;
u16 ccc;
u8 read_bl_len;
u8 read_bl_partial;
u8 write_blk_misalign;
u8 read_blk_misalign;
u8 dsr_imp;
u16 c_size;
u8 vdd_r_curr_min;
u8 vdd_r_curr_max;
u8 vdd_w_curr_min;
u8 vdd_w_curr_max;
u8 c_size_mult;
union {
struct { /* MMC system specification version 3.1 */
u8 erase_grp_size;
u8 erase_grp_mult;
} v31;
struct { /* MMC system specification version 2.2 */
u8 sector_size;
u8 erase_grp_size;
} v22;
} erase;
u8 wp_grp_size;
u8 wp_grp_enable;
u8 default_ecc;
u8 r2w_factor;
u8 write_bl_len;
u8 write_bl_partial;
u8 file_format_grp;
u8 copy;
u8 perm_write_protect;
u8 tmp_write_protect;
u8 file_format;
u8 ecc;
}mmc_csd_t;;
struct mmc_response_r3 {
u32 ocr;
};
#define MMC_VDD_145_150 0x00000001 /* VDD voltage 1.45 - 1.50 */
#define MMC_VDD_150_155 0x00000002 /* VDD voltage 1.50 - 1.55 */
#define MMC_VDD_155_160 0x00000004 /* VDD voltage 1.55 - 1.60 */
#define MMC_VDD_160_165 0x00000008 /* VDD voltage 1.60 - 1.65 */
#define MMC_VDD_165_170 0x00000010 /* VDD voltage 1.65 - 1.70 */
#define MMC_VDD_17_18 0x00000020 /* VDD voltage 1.7 - 1.8 */
#define MMC_VDD_18_19 0x00000040 /* VDD voltage 1.8 - 1.9 */
#define MMC_VDD_19_20 0x00000080 /* VDD voltage 1.9 - 2.0 */
#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_CARD_BUSY 0x80000000 /* Card Power up status bit */
/* CSD field definitions */
#define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
#define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 */
#define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
#define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
#define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 */
#if MMC_DEBUG_LEVEL
#define DEBUG(n, args...) \
do { \
if (n <= MMC_DEBUG_LEVEL) { \
printf(args); \
} \
} while(0)
#else
#define DEBUG(n, args...)
#endif /* MMC_DEBUG_EN */
#endif /* __MMC_PROTOCOL__ */
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