2 **********************************************************************
6 * (c) Copyright 2005 - 2007, Ingenic Semiconductor, Inc
9 ***********************************************************************
11 ----------------------------------------------------------------------
13 Purpose : MMC protocol definitions.
15 ----------------------------------------------------------------------
16 Version-Date-----Author-Explanation
17 ----------------------------------------------------------------------
18 1.00.00 20060831 WeiJianli First release
20 ----------------------------------------------------------------------
21 Known problems or limitations with current version
22 ----------------------------------------------------------------------
24 ---------------------------END-OF-HEADER------------------------------
27 #ifndef __MMC_PROTOCOL__
28 #define __MMC_PROTOCOL__
30 /* Standard MMC/SD clock speeds */
31 #define MMC_CLOCK_SLOW 400000 /* 400 kHz for initial setup */
32 #define MMC_CLOCK_FAST 20000000 /* 20 MHz for maximum for normal operation */
33 #define SD_CLOCK_FAST 24000000 /* 24 MHz for SD Cards */
35 /* Extra MMC commands for state control */
36 /* Use negative numbers to disambiguate */
37 #define MMC_CIM_RESET -1
39 /* Standard MMC commands (3.1) type argument response */
41 #define MMC_GO_IDLE_STATE 0 /* bc */
42 #define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
43 #define MMC_ALL_SEND_CID 2 /* bcr R2 */
44 #define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
45 #define MMC_SET_DSR 4 /* bc [31:16] RCA */
46 #define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
47 #define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
48 #define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
49 #define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
50 #define MMC_STOP_TRANSMISSION 12 /* ac R1b */
51 #define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
52 #define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
55 #define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
56 #define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
57 #define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
60 #define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
63 #define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
64 #define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
65 #define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
66 #define MMC_PROGRAM_CID 26 /* adtc R1 */
67 #define MMC_PROGRAM_CSD 27 /* adtc R1 */
70 #define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
71 #define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
72 #define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
75 #define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
76 #define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
77 #define MMC_ERASE 37 /* ac R1b */
80 #define MMC_FAST_IO 39 /* ac <Complex> R4 */
81 #define MMC_GO_IRQ_STATE 40 /* bcr R5 */
84 #define MMC_LOCK_UNLOCK 42 /* adtc R1b */
87 #define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
88 #define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1b */
91 #define SD_SEND_OP_COND 41 /* bcr [31:0] OCR R3 */
92 #define SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
93 #define SEND_SCR 51 /* adtc [31:0] staff R1 */
95 /* Don't change the order of these; they are used in dispatch tables */
114 r : detected and set for the actual command response
115 x : detected and set during command execution. the host must poll
116 the card by sending status command in order to read these bits.
118 a : according to the card state
119 b : always related to the previous command. Reception of
120 a valid command will clear it (with a delay of one command)
124 #define R1_OUT_OF_RANGE (1 << 31) /* er, c */
125 #define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
126 #define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
127 #define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
128 #define R1_ERASE_PARAM (1 << 27) /* ex, c */
129 #define R1_WP_VIOLATION (1 << 26) /* erx, c */
130 #define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
131 #define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
132 #define R1_COM_CRC_ERROR (1 << 23) /* er, b */
133 #define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
134 #define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
135 #define R1_CC_ERROR (1 << 20) /* erx, c */
136 #define R1_ERROR (1 << 19) /* erx, c */
137 #define R1_UNDERRUN (1 << 18) /* ex, c */
138 #define R1_OVERRUN (1 << 17) /* ex, c */
139 #define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
140 #define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
141 #define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
142 #define R1_ERASE_RESET (1 << 13) /* sr, c */
143 #define R1_STATUS(x) (x & 0xFFFFE000)
144 #define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
145 #define R1_READY_FOR_DATA (1 << 8) /* sx, a */
146 #define R1_APP_CMD (1 << 7) /* sr, c */
149 CARD_STATE_EMPTY
= -1,
151 CARD_STATE_READY
= 1,
152 CARD_STATE_IDENT
= 2,
161 /* These are unpacked versions of the actual responses */
163 struct mmc_response_r1
{
168 typedef struct mmc_cid
{
171 u8 pnm
[7]; /* Product name (we null-terminate) */
177 typedef struct mmc_csd
{
186 u8 write_blk_misalign
;
187 u8 read_blk_misalign
;
196 struct { /* MMC system specification version 3.1 */
200 struct { /* MMC system specification version 2.2 */
213 u8 perm_write_protect
;
214 u8 tmp_write_protect
;
219 struct mmc_response_r3
{
223 #define MMC_VDD_145_150 0x00000001 /* VDD voltage 1.45 - 1.50 */
224 #define MMC_VDD_150_155 0x00000002 /* VDD voltage 1.50 - 1.55 */
225 #define MMC_VDD_155_160 0x00000004 /* VDD voltage 1.55 - 1.60 */
226 #define MMC_VDD_160_165 0x00000008 /* VDD voltage 1.60 - 1.65 */
227 #define MMC_VDD_165_170 0x00000010 /* VDD voltage 1.65 - 1.70 */
228 #define MMC_VDD_17_18 0x00000020 /* VDD voltage 1.7 - 1.8 */
229 #define MMC_VDD_18_19 0x00000040 /* VDD voltage 1.8 - 1.9 */
230 #define MMC_VDD_19_20 0x00000080 /* VDD voltage 1.9 - 2.0 */
231 #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
232 #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
233 #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
234 #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
235 #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
236 #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
237 #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
238 #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
239 #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
240 #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
241 #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
242 #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
243 #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
244 #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
245 #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
246 #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
247 #define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
250 /* CSD field definitions */
252 #define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
253 #define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
254 #define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 */
256 #define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
257 #define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
258 #define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
259 #define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 */
263 #define DEBUG(n, args...) \
265 if (n <= MMC_DEBUG_LEVEL) { \
270 #define DEBUG(n, args...)
271 #endif /* MMC_DEBUG_EN */
273 #endif /* __MMC_PROTOCOL__ */
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