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8#ifndef LINUX_MMC_CORE_H
9#define LINUX_MMC_CORE_H
10
11#include <linux/completion.h>
12#include <linux/types.h>
13
14struct mmc_data;
15struct mmc_request;
16
17enum mmc_blk_status {
18 MMC_BLK_SUCCESS = 0,
19 MMC_BLK_PARTIAL,
20 MMC_BLK_CMD_ERR,
21 MMC_BLK_RETRY,
22 MMC_BLK_ABORT,
23 MMC_BLK_DATA_ERR,
24 MMC_BLK_ECC_ERR,
25 MMC_BLK_NOMEDIUM,
26 MMC_BLK_NEW_REQUEST,
27};
28
29struct mmc_command {
30 u32 opcode;
31 u32 arg;
32#define MMC_CMD23_ARG_REL_WR (1 << 31)
33#define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30))
34#define MMC_CMD23_ARG_TAG_REQ (1 << 29)
35 u32 resp[4];
36 unsigned int flags;
37#define MMC_RSP_PRESENT (1 << 0)
38#define MMC_RSP_136 (1 << 1)
39#define MMC_RSP_CRC (1 << 2)
40#define MMC_RSP_BUSY (1 << 3)
41#define MMC_RSP_OPCODE (1 << 4)
42
43#define MMC_CMD_MASK (3 << 5)
44#define MMC_CMD_AC (0 << 5)
45#define MMC_CMD_ADTC (1 << 5)
46#define MMC_CMD_BC (2 << 5)
47#define MMC_CMD_BCR (3 << 5)
48
49#define MMC_RSP_SPI_S1 (1 << 7)
50#define MMC_RSP_SPI_S2 (1 << 8)
51#define MMC_RSP_SPI_B4 (1 << 9)
52#define MMC_RSP_SPI_BUSY (1 << 10)
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58
59#define MMC_RSP_NONE (0)
60#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
61#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
62#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
63#define MMC_RSP_R3 (MMC_RSP_PRESENT)
64#define MMC_RSP_R4 (MMC_RSP_PRESENT)
65#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
66#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
67#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
68
69
70#define MMC_RSP_R1_NO_CRC (MMC_RSP_PRESENT|MMC_RSP_OPCODE)
71
72#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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79#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
80#define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
81#define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
82#define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
83#define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
84#define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
85#define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
86
87#define mmc_spi_resp_type(cmd) ((cmd)->flags & \
88 (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4))
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93#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
94
95 unsigned int retries;
96 int error;
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112 unsigned int busy_timeout;
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114 bool sanitize_busy;
115
116 struct mmc_data *data;
117 struct mmc_request *mrq;
118};
119
120struct mmc_data {
121 unsigned int timeout_ns;
122 unsigned int timeout_clks;
123 unsigned int blksz;
124 unsigned int blocks;
125 unsigned int blk_addr;
126 int error;
127 unsigned int flags;
128
129#define MMC_DATA_WRITE BIT(8)
130#define MMC_DATA_READ BIT(9)
131
132#define MMC_DATA_QBR BIT(10)
133#define MMC_DATA_PRIO BIT(11)
134#define MMC_DATA_REL_WR BIT(12)
135#define MMC_DATA_DAT_TAG BIT(13)
136#define MMC_DATA_FORCED_PRG BIT(14)
137
138 unsigned int bytes_xfered;
139
140 struct mmc_command *stop;
141 struct mmc_request *mrq;
142
143 unsigned int sg_len;
144 int sg_count;
145 struct scatterlist *sg;
146 s32 host_cookie;
147};
148
149struct mmc_host;
150struct mmc_request {
151 struct mmc_command *sbc;
152 struct mmc_command *cmd;
153 struct mmc_data *data;
154 struct mmc_command *stop;
155
156 struct completion completion;
157 struct completion cmd_completion;
158 void (*done)(struct mmc_request *);
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164 void (*recovery_notifier)(struct mmc_request *);
165 struct mmc_host *host;
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167
168 bool cap_cmd_during_tfr;
169
170 int tag;
171};
172
173struct mmc_card;
174
175void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq);
176int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd,
177 int retries);
178
179int mmc_hw_reset(struct mmc_host *host);
180void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card);
181
182#endif
183