2 * Header for MultiMediaCard (MMC)
4 * Copyright 2002 Hewlett-Packard Company
6 * Use consistent with the GNU GPL is permitted,
7 * provided that this copyright notice is
8 * preserved in its entirety in all copies and derived works.
10 * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
11 * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
12 * FITNESS FOR ANY PARTICULAR PURPOSE.
14 * Many thanks to Alessandro Rubini and Jonathan Corbet!
16 * Based strongly on code by:
18 * Author: Yong-iL Joh <tolkien@mizi.com>
20 * Author: Andrew Christian
27 /* Standard MMC commands (4.1) type argument response */
29 #define MMC_GO_IDLE_STATE 0 /* bc */
30 #define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
31 #define MMC_ALL_SEND_CID 2 /* bcr R2 */
32 #define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
33 #define MMC_SET_DSR 4 /* bc [31:16] RCA */
34 #define MMC_SWITCH 6 /* ac [31:0] See below R1b */
35 #define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
36 #define MMC_SEND_EXT_CSD 8 /* adtc R1 */
37 #define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
38 #define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
39 #define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
40 #define MMC_STOP_TRANSMISSION 12 /* ac R1b */
41 #define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
42 #define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
43 #define MMC_SPI_READ_OCR 58 /* spi spi_R3 */
44 #define MMC_SPI_CRC_ON_OFF 59 /* spi [0:0] flag spi_R1 */
47 #define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
48 #define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
49 #define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
52 #define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
55 #define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
56 #define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
57 #define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
58 #define MMC_PROGRAM_CID 26 /* adtc R1 */
59 #define MMC_PROGRAM_CSD 27 /* adtc R1 */
62 #define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
63 #define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
64 #define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
67 #define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
68 #define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
69 #define MMC_ERASE 38 /* ac R1b */
72 #define MMC_FAST_IO 39 /* ac <Complex> R4 */
73 #define MMC_GO_IRQ_STATE 40 /* bcr R5 */
76 #define MMC_LOCK_UNLOCK 42 /* adtc R1b */
79 #define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
80 #define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */
83 * MMC_SWITCH argument format:
87 * [23:16] Location of target Byte in EXT_CSD
94 MMC status in R1, for native mode (SPI bits are different)
98 r : detected and set for the actual command response
99 x : detected and set during command execution. the host must poll
100 the card by sending status command in order to read these bits.
102 a : according to the card state
103 b : always related to the previous command. Reception of
104 a valid command will clear it (with a delay of one command)
108 #define R1_OUT_OF_RANGE (1 << 31) /* er, c */
109 #define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
110 #define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
111 #define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
112 #define R1_ERASE_PARAM (1 << 27) /* ex, c */
113 #define R1_WP_VIOLATION (1 << 26) /* erx, c */
114 #define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
115 #define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
116 #define R1_COM_CRC_ERROR (1 << 23) /* er, b */
117 #define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
118 #define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
119 #define R1_CC_ERROR (1 << 20) /* erx, c */
120 #define R1_ERROR (1 << 19) /* erx, c */
121 #define R1_UNDERRUN (1 << 18) /* ex, c */
122 #define R1_OVERRUN (1 << 17) /* ex, c */
123 #define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
124 #define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
125 #define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
126 #define R1_ERASE_RESET (1 << 13) /* sr, c */
127 #define R1_STATUS(x) (x & 0xFFFFE000)
128 #define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
129 #define R1_READY_FOR_DATA (1 << 8) /* sx, a */
130 #define R1_APP_CMD (1 << 5) /* sr, c */
133 * MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS
134 * R1 is the low order byte; R2 is the next highest byte, when present.
136 #define R1_SPI_IDLE (1 << 0)
137 #define R1_SPI_ERASE_RESET (1 << 1)
138 #define R1_SPI_ILLEGAL_COMMAND (1 << 2)
139 #define R1_SPI_COM_CRC (1 << 3)
140 #define R1_SPI_ERASE_SEQ (1 << 4)
141 #define R1_SPI_ADDRESS (1 << 5)
142 #define R1_SPI_PARAMETER (1 << 6)
143 /* R1 bit 7 is always zero */
144 #define R2_SPI_CARD_LOCKED (1 << 8)
145 #define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
146 #define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
147 #define R2_SPI_ERROR (1 << 10)
148 #define R2_SPI_CC_ERROR (1 << 11)
149 #define R2_SPI_CARD_ECC_ERROR (1 << 12)
150 #define R2_SPI_WP_VIOLATION (1 << 13)
151 #define R2_SPI_ERASE_PARAM (1 << 14)
152 #define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
153 #define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE
155 /* These are unpacked versions of the actual responses */
166 u8 write_blk_misalign;
167 u8 read_blk_misalign;
176 struct { /* MMC system specification version 3.1 */
180 struct { /* MMC system specification version 2.2 */
193 u8 perm_write_protect;
194 u8 tmp_write_protect;
200 * OCR bits are mostly in host.h
202 #define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
205 * Card Command Classes (CCC)
207 #define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
208 /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
209 /* (and for SPI, CMD58,59) */
210 #define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
212 #define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
214 #define CCC_STREAM_WRITE (1<<3) /* (3) Stream write commands */
216 #define CCC_BLOCK_WRITE (1<<4) /* (4) Block write commands */
217 /* (CMD16,24,25,26,27) */
218 #define CCC_ERASE (1<<5) /* (5) Ability to erase blocks */
219 /* (CMD32,33,34,35,36,37,38,39) */
220 #define CCC_WRITE_PROT (1<<6) /* (6) Able to write protect blocks */
222 #define CCC_LOCK_CARD (1<<7) /* (7) Able to lock down card */
224 #define CCC_APP_SPEC (1<<8) /* (8) Application specific */
225 /* (CMD55,56,57,ACMD*) */
226 #define CCC_IO_MODE (1<<9) /* (9) I/O mode */
227 /* (CMD5,39,40,52,53) */
228 #define CCC_SWITCH (1<<10) /* (10) High speed switch */
229 /* (CMD6,34,35,36,37,50) */
234 * CSD field definitions
237 #define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
238 #define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
239 #define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */
240 #define CSD_STRUCT_EXT_CSD 3 /* Version is coded in CSD_STRUCTURE in EXT_CSD */
242 #define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
243 #define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
244 #define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
245 #define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 - 3.2 - 3.31 */
246 #define CSD_SPEC_VER_4 4 /* Implements system specification 4.0 - 4.1 */
252 #define EXT_CSD_BUS_WIDTH 183 /* R/W */
253 #define EXT_CSD_HS_TIMING 185 /* R/W */
254 #define EXT_CSD_CARD_TYPE 196 /* RO */
255 #define EXT_CSD_REV 192 /* RO */
256 #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
259 * EXT_CSD field definitions
262 #define EXT_CSD_CMD_SET_NORMAL (1<<0)
263 #define EXT_CSD_CMD_SET_SECURE (1<<1)
264 #define EXT_CSD_CMD_SET_CPSECURE (1<<2)
266 #define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
267 #define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
269 #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
270 #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
271 #define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
274 * MMC_SWITCH access modes
277 #define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
278 #define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits which are 1 in value */
279 #define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits which are 1 in value */
280 #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */
282 #endif /* MMC_MMC_PROTOCOL_H */