258daf914c6df301330b70f00d95ac95a44ac545
2 * linux/include/linux/mmc/core.h
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 #ifndef LINUX_MMC_CORE_H
9 #define LINUX_MMC_CORE_H
11 #include <linux/interrupt.h>
12 #include <linux/completion.h>
21 #define MMC_CMD23_ARG_REL_WR (1 << 31)
22 #define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30))
23 #define MMC_CMD23_ARG_TAG_REQ (1 << 29)
25 unsigned int flags
; /* expected response type */
26 #define MMC_RSP_PRESENT (1 << 0)
27 #define MMC_RSP_136 (1 << 1) /* 136 bit response */
28 #define MMC_RSP_CRC (1 << 2) /* expect valid crc */
29 #define MMC_RSP_BUSY (1 << 3) /* card may send busy */
30 #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
32 #define MMC_CMD_MASK (3 << 5) /* non-SPI command type */
33 #define MMC_CMD_AC (0 << 5)
34 #define MMC_CMD_ADTC (1 << 5)
35 #define MMC_CMD_BC (2 << 5)
36 #define MMC_CMD_BCR (3 << 5)
38 #define MMC_RSP_SPI_S1 (1 << 7) /* one status byte */
39 #define MMC_RSP_SPI_S2 (1 << 8) /* second byte */
40 #define MMC_RSP_SPI_B4 (1 << 9) /* four data bytes */
41 #define MMC_RSP_SPI_BUSY (1 << 10) /* card may send busy */
44 * These are the native response types, and correspond to valid bit
45 * patterns of the above flags. One additional valid pattern
46 * is all zeros, which means we don't expect a response.
48 #define MMC_RSP_NONE (0)
49 #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
50 #define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
51 #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
52 #define MMC_RSP_R3 (MMC_RSP_PRESENT)
53 #define MMC_RSP_R4 (MMC_RSP_PRESENT)
54 #define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
55 #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
56 #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
58 #define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
61 * These are the SPI response types for MMC, SD, and SDIO cards.
62 * Commands return R1, with maybe more info. Zero is an error type;
63 * callers must always provide the appropriate MMC_RSP_SPI_Rx flags.
65 #define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
66 #define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
67 #define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
68 #define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
69 #define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
70 #define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
71 #define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
73 #define mmc_spi_resp_type(cmd) ((cmd)->flags & \
74 (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4))
77 * These are the command types.
79 #define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
81 unsigned int retries
; /* max number of retries */
82 int error
; /* command error */
85 * Standard errno values are used for errors, but some have specific
86 * meaning in the MMC layer:
88 * ETIMEDOUT Card took too long to respond
89 * EILSEQ Basic format problem with the received or sent data
90 * (e.g. CRC check failed, incorrect opcode in response
92 * EINVAL Request cannot be performed because of restrictions
93 * in hardware and/or the driver
94 * ENOMEDIUM Host can determine that the slot is empty and is
95 * actively failing requests
98 unsigned int busy_timeout
; /* busy detect timeout in ms */
99 /* Set this flag only for blocking sanitize request */
102 struct mmc_data
*data
; /* data segment associated with cmd */
103 struct mmc_request
*mrq
; /* associated request */
107 unsigned int timeout_ns
; /* data timeout (in ns, max 80ms) */
108 unsigned int timeout_clks
; /* data timeout (in clocks) */
109 unsigned int blksz
; /* data block size */
110 unsigned int blocks
; /* number of blocks */
111 int error
; /* data error */
114 #define MMC_DATA_WRITE (1 << 8)
115 #define MMC_DATA_READ (1 << 9)
116 #define MMC_DATA_STREAM (1 << 10)
118 unsigned int bytes_xfered
;
120 struct mmc_command
*stop
; /* stop command */
121 struct mmc_request
*mrq
; /* associated request */
123 unsigned int sg_len
; /* size of scatter list */
124 int sg_count
; /* mapped sg entries */
125 struct scatterlist
*sg
; /* I/O scatter list */
126 s32 host_cookie
; /* host private data */
131 struct mmc_command
*sbc
; /* SET_BLOCK_COUNT for multiblock */
132 struct mmc_command
*cmd
;
133 struct mmc_data
*data
;
134 struct mmc_command
*stop
;
136 struct completion completion
;
137 void (*done
)(struct mmc_request
*);/* completion function */
138 struct mmc_host
*host
;
142 struct mmc_async_req
;
144 extern int mmc_stop_bkops(struct mmc_card
*);
145 extern int mmc_read_bkops_status(struct mmc_card
*);
146 extern struct mmc_async_req
*mmc_start_req(struct mmc_host
*,
147 struct mmc_async_req
*, int *);
148 extern int mmc_interrupt_hpi(struct mmc_card
*);
149 extern void mmc_wait_for_req(struct mmc_host
*, struct mmc_request
*);
150 extern int mmc_wait_for_cmd(struct mmc_host
*, struct mmc_command
*, int);
151 extern int mmc_app_cmd(struct mmc_host
*, struct mmc_card
*);
152 extern int mmc_wait_for_app_cmd(struct mmc_host
*, struct mmc_card
*,
153 struct mmc_command
*, int);
154 extern void mmc_start_bkops(struct mmc_card
*card
, bool from_exception
);
155 extern int __mmc_switch(struct mmc_card
*, u8
, u8
, u8
, unsigned int, bool,
157 extern int mmc_switch(struct mmc_card
*, u8
, u8
, u8
, unsigned int);
158 extern int mmc_send_tuning(struct mmc_host
*host
);
159 extern int mmc_get_ext_csd(struct mmc_card
*card
, u8
**new_ext_csd
);
161 #define MMC_ERASE_ARG 0x00000000
162 #define MMC_SECURE_ERASE_ARG 0x80000000
163 #define MMC_TRIM_ARG 0x00000001
164 #define MMC_DISCARD_ARG 0x00000003
165 #define MMC_SECURE_TRIM1_ARG 0x80000001
166 #define MMC_SECURE_TRIM2_ARG 0x80008000
168 #define MMC_SECURE_ARGS 0x80000000
169 #define MMC_TRIM_ARGS 0x00008001
171 extern int mmc_erase(struct mmc_card
*card
, unsigned int from
, unsigned int nr
,
173 extern int mmc_can_erase(struct mmc_card
*card
);
174 extern int mmc_can_trim(struct mmc_card
*card
);
175 extern int mmc_can_discard(struct mmc_card
*card
);
176 extern int mmc_can_sanitize(struct mmc_card
*card
);
177 extern int mmc_can_secure_erase_trim(struct mmc_card
*card
);
178 extern int mmc_erase_group_aligned(struct mmc_card
*card
, unsigned int from
,
180 extern unsigned int mmc_calc_max_discard(struct mmc_card
*card
);
182 extern int mmc_set_blocklen(struct mmc_card
*card
, unsigned int blocklen
);
183 extern int mmc_set_blockcount(struct mmc_card
*card
, unsigned int blockcount
,
185 extern int mmc_hw_reset(struct mmc_host
*host
);
186 extern int mmc_can_reset(struct mmc_card
*card
);
188 extern void mmc_set_data_timeout(struct mmc_data
*, const struct mmc_card
*);
189 extern unsigned int mmc_align_data_size(struct mmc_card
*, unsigned int);
191 extern int __mmc_claim_host(struct mmc_host
*host
, atomic_t
*abort
);
192 extern void mmc_release_host(struct mmc_host
*host
);
194 extern void mmc_get_card(struct mmc_card
*card
);
195 extern void mmc_put_card(struct mmc_card
*card
);
197 extern int mmc_flush_cache(struct mmc_card
*);
199 extern int mmc_detect_card_removed(struct mmc_host
*host
);
202 * mmc_claim_host - exclusively claim a host
203 * @host: mmc host to claim
205 * Claim a host for a set of operations.
207 static inline void mmc_claim_host(struct mmc_host
*host
)
209 __mmc_claim_host(host
, NULL
);
213 extern u32
mmc_vddrange_to_ocrmask(int vdd_min
, int vdd_max
);
214 extern int mmc_of_parse_voltage(struct device_node
*np
, u32
*mask
);
216 #endif /* LINUX_MMC_CORE_H */
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