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5#ifndef LINUX_MMC_CORE_H
6#define LINUX_MMC_CORE_H
7
8#include <linux/completion.h>
9#include <linux/types.h>
10
11struct mmc_data;
12struct mmc_request;
13
14enum mmc_blk_status {
15 MMC_BLK_SUCCESS = 0,
16 MMC_BLK_PARTIAL,
17 MMC_BLK_CMD_ERR,
18 MMC_BLK_RETRY,
19 MMC_BLK_ABORT,
20 MMC_BLK_DATA_ERR,
21 MMC_BLK_ECC_ERR,
22 MMC_BLK_NOMEDIUM,
23 MMC_BLK_NEW_REQUEST,
24};
25
26struct mmc_command {
27 u32 opcode;
28 u32 arg;
29#define MMC_CMD23_ARG_REL_WR (1 << 31)
30#define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30))
31#define MMC_CMD23_ARG_TAG_REQ (1 << 29)
32 u32 resp[4];
33 unsigned int flags;
34#define MMC_RSP_PRESENT (1 << 0)
35#define MMC_RSP_136 (1 << 1)
36#define MMC_RSP_CRC (1 << 2)
37#define MMC_RSP_BUSY (1 << 3)
38#define MMC_RSP_OPCODE (1 << 4)
39
40#define MMC_CMD_MASK (3 << 5)
41#define MMC_CMD_AC (0 << 5)
42#define MMC_CMD_ADTC (1 << 5)
43#define MMC_CMD_BC (2 << 5)
44#define MMC_CMD_BCR (3 << 5)
45
46#define MMC_RSP_SPI_S1 (1 << 7)
47#define MMC_RSP_SPI_S2 (1 << 8)
48#define MMC_RSP_SPI_B4 (1 << 9)
49#define MMC_RSP_SPI_BUSY (1 << 10)
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51
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54
55
56#define MMC_RSP_NONE (0)
57#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
58#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
59#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
60#define MMC_RSP_R3 (MMC_RSP_PRESENT)
61#define MMC_RSP_R4 (MMC_RSP_PRESENT)
62#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
63#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
64#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
65
66
67#define MMC_RSP_R1_NO_CRC (MMC_RSP_PRESENT|MMC_RSP_OPCODE)
68
69#define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
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75
76#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
77#define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
78#define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
79#define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
80#define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
81#define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
82#define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
83
84#define mmc_spi_resp_type(cmd) ((cmd)->flags & \
85 (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4))
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87
88
89
90#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
91
92 unsigned int retries;
93 int error;
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107
108
109 unsigned int busy_timeout;
110 struct mmc_data *data;
111 struct mmc_request *mrq;
112};
113
114struct mmc_data {
115 unsigned int timeout_ns;
116 unsigned int timeout_clks;
117 unsigned int blksz;
118 unsigned int blocks;
119 unsigned int blk_addr;
120 int error;
121 unsigned int flags;
122
123#define MMC_DATA_WRITE BIT(8)
124#define MMC_DATA_READ BIT(9)
125
126#define MMC_DATA_QBR BIT(10)
127#define MMC_DATA_PRIO BIT(11)
128#define MMC_DATA_REL_WR BIT(12)
129#define MMC_DATA_DAT_TAG BIT(13)
130#define MMC_DATA_FORCED_PRG BIT(14)
131
132 unsigned int bytes_xfered;
133
134 struct mmc_command *stop;
135 struct mmc_request *mrq;
136
137 unsigned int sg_len;
138 int sg_count;
139 struct scatterlist *sg;
140 s32 host_cookie;
141};
142
143struct mmc_host;
144struct mmc_request {
145 struct mmc_command *sbc;
146 struct mmc_command *cmd;
147 struct mmc_data *data;
148 struct mmc_command *stop;
149
150 struct completion completion;
151 struct completion cmd_completion;
152 void (*done)(struct mmc_request *);
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156
157
158 void (*recovery_notifier)(struct mmc_request *);
159 struct mmc_host *host;
160
161
162 bool cap_cmd_during_tfr;
163
164 int tag;
165};
166
167struct mmc_card;
168
169void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq);
170int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd,
171 int retries);
172
173int mmc_hw_reset(struct mmc_host *host);
174int mmc_sw_reset(struct mmc_host *host);
175void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card);
176
177#endif
178