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274 lines
9.6 KiB
C
274 lines
9.6 KiB
C
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/*
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**********************************************************************
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*
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* uC/MMC
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*
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* (c) Copyright 2005 - 2007, Ingenic Semiconductor, Inc
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* All rights reserved.
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*
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***********************************************************************
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----------------------------------------------------------------------
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File : mmc_protocol.h
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Purpose : MMC protocol definitions.
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----------------------------------------------------------------------
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Version-Date-----Author-Explanation
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----------------------------------------------------------------------
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1.00.00 20060831 WeiJianli First release
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----------------------------------------------------------------------
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Known problems or limitations with current version
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----------------------------------------------------------------------
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(none)
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---------------------------END-OF-HEADER------------------------------
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*/
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#ifndef __MMC_PROTOCOL__
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#define __MMC_PROTOCOL__
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/* Standard MMC/SD clock speeds */
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#define MMC_CLOCK_SLOW 400000 /* 400 kHz for initial setup */
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#define MMC_CLOCK_FAST 20000000 /* 20 MHz for maximum for normal operation */
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#define SD_CLOCK_FAST 24000000 /* 24 MHz for SD Cards */
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/* Extra MMC commands for state control */
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/* Use negative numbers to disambiguate */
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#define MMC_CIM_RESET -1
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/* Standard MMC commands (3.1) type argument response */
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/* class 1 */
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#define MMC_GO_IDLE_STATE 0 /* bc */
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#define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
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#define MMC_ALL_SEND_CID 2 /* bcr R2 */
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#define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
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#define MMC_SET_DSR 4 /* bc [31:16] RCA */
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#define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
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#define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
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#define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
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#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
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#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
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#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
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#define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
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/* class 2 */
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#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
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#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
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#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
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/* class 3 */
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#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
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/* class 4 */
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#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
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#define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
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#define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
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#define MMC_PROGRAM_CID 26 /* adtc R1 */
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#define MMC_PROGRAM_CSD 27 /* adtc R1 */
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/* class 6 */
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#define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
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#define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
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#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
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/* class 5 */
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#define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
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#define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
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#define MMC_ERASE 37 /* ac R1b */
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/* class 9 */
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#define MMC_FAST_IO 39 /* ac <Complex> R4 */
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#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
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/* class 7 */
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#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
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/* class 8 */
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#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
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#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1b */
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/* SD class */
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#define SD_SEND_OP_COND 41 /* bcr [31:0] OCR R3 */
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#define SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
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#define SEND_SCR 51 /* adtc [31:0] staff R1 */
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/* Don't change the order of these; they are used in dispatch tables */
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enum mmc_rsp_t {
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RESPONSE_NONE = 0,
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RESPONSE_R1 = 1,
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RESPONSE_R1B = 2,
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RESPONSE_R2_CID = 3,
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RESPONSE_R2_CSD = 4,
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RESPONSE_R3 = 5,
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RESPONSE_R4 = 6,
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RESPONSE_R5 = 7,
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RESPONSE_R6 = 8,
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};
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/*
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MMC status in R1
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Type
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e : error bit
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s : status bit
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r : detected and set for the actual command response
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x : detected and set during command execution. the host must poll
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the card by sending status command in order to read these bits.
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Clear condition
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a : according to the card state
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b : always related to the previous command. Reception of
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a valid command will clear it (with a delay of one command)
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c : clear by read
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*/
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#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
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#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
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#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
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#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
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#define R1_ERASE_PARAM (1 << 27) /* ex, c */
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#define R1_WP_VIOLATION (1 << 26) /* erx, c */
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#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
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#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
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#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
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#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
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#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
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#define R1_CC_ERROR (1 << 20) /* erx, c */
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#define R1_ERROR (1 << 19) /* erx, c */
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#define R1_UNDERRUN (1 << 18) /* ex, c */
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#define R1_OVERRUN (1 << 17) /* ex, c */
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#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
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#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
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#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
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#define R1_ERASE_RESET (1 << 13) /* sr, c */
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#define R1_STATUS(x) (x & 0xFFFFE000)
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#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
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#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
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#define R1_APP_CMD (1 << 7) /* sr, c */
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enum card_state {
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CARD_STATE_EMPTY = -1,
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CARD_STATE_IDLE = 0,
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CARD_STATE_READY = 1,
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CARD_STATE_IDENT = 2,
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CARD_STATE_STBY = 3,
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CARD_STATE_TRAN = 4,
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CARD_STATE_DATA = 5,
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CARD_STATE_RCV = 6,
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CARD_STATE_PRG = 7,
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CARD_STATE_DIS = 8,
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};
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/* These are unpacked versions of the actual responses */
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struct mmc_response_r1 {
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u8 cmd;
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u32 status;
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};
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typedef struct mmc_cid {
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u8 mid;
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u16 oid;
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u8 pnm[7]; /* Product name (we null-terminate) */
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u8 prv;
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u32 psn;
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u8 mdt;
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}mmc_cid_t;
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typedef struct mmc_csd {
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u8 csd_structure;
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u8 spec_vers;
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u8 taac;
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u8 nsac;
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u8 tran_speed;
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u16 ccc;
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u8 read_bl_len;
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u8 read_bl_partial;
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u8 write_blk_misalign;
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u8 read_blk_misalign;
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u8 dsr_imp;
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u16 c_size;
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u8 vdd_r_curr_min;
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u8 vdd_r_curr_max;
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u8 vdd_w_curr_min;
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u8 vdd_w_curr_max;
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u8 c_size_mult;
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union {
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struct { /* MMC system specification version 3.1 */
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u8 erase_grp_size;
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u8 erase_grp_mult;
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} v31;
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struct { /* MMC system specification version 2.2 */
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u8 sector_size;
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u8 erase_grp_size;
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} v22;
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} erase;
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u8 wp_grp_size;
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u8 wp_grp_enable;
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u8 default_ecc;
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u8 r2w_factor;
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u8 write_bl_len;
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u8 write_bl_partial;
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u8 file_format_grp;
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u8 copy;
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u8 perm_write_protect;
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u8 tmp_write_protect;
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u8 file_format;
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u8 ecc;
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}mmc_csd_t;;
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struct mmc_response_r3 {
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u32 ocr;
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};
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#define MMC_VDD_145_150 0x00000001 /* VDD voltage 1.45 - 1.50 */
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#define MMC_VDD_150_155 0x00000002 /* VDD voltage 1.50 - 1.55 */
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#define MMC_VDD_155_160 0x00000004 /* VDD voltage 1.55 - 1.60 */
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#define MMC_VDD_160_165 0x00000008 /* VDD voltage 1.60 - 1.65 */
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#define MMC_VDD_165_170 0x00000010 /* VDD voltage 1.65 - 1.70 */
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#define MMC_VDD_17_18 0x00000020 /* VDD voltage 1.7 - 1.8 */
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#define MMC_VDD_18_19 0x00000040 /* VDD voltage 1.8 - 1.9 */
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#define MMC_VDD_19_20 0x00000080 /* VDD voltage 1.9 - 2.0 */
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#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
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#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
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#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
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#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
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#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
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#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
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#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
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#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
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#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
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#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
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#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
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#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
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#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
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#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
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#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
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/* CSD field definitions */
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#define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
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#define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
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#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 */
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#define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
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#define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
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#define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
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#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 */
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#if MMC_DEBUG_LEVEL
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#define DEBUG(n, args...) \
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do { \
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if (n <= MMC_DEBUG_LEVEL) { \
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printf(args); \
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} \
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} while(0)
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#else
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#define DEBUG(n, args...)
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#endif /* MMC_DEBUG_EN */
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#endif /* __MMC_PROTOCOL__ */
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