| 1 | /* |
| 2 | * linux/include/linux/mmc/mmc.h |
| 3 | * |
| 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. |
| 7 | */ |
| 8 | #ifndef MMC_H |
| 9 | #define MMC_H |
| 10 | |
| 11 | /* removed by scsuh */ |
| 12 | #if 0 |
| 13 | #include <linux/list.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/device.h> |
| 16 | |
| 17 | struct request; |
| 18 | struct mmc_data; |
| 19 | struct mmc_request; |
| 20 | #endif |
| 21 | |
| 22 | #define MMC_RSP_PRESENT (1 << 0) |
| 23 | #define MMC_RSP_136 (1 << 1) /* 136 bit response */ |
| 24 | #define MMC_RSP_CRC (1 << 2) /* expect valid crc */ |
| 25 | #define MMC_RSP_BUSY (1 << 3) /* card may send busy */ |
| 26 | #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */ |
| 27 | #define MMC_CMD_MASK (3 << 5) /* command type */ |
| 28 | #define MMC_CMD_AC (0 << 5) |
| 29 | #define MMC_CMD_ADTC (1 << 5) |
| 30 | #define MMC_CMD_BC (2 << 5) |
| 31 | #define MMC_CMD_BCR (3 << 5) |
| 32 | |
| 33 | /* |
| 34 | * These are the response types, and correspond to valid bit |
| 35 | * patterns of the above flags. One additional valid pattern |
| 36 | * is all zeros, which means we don't expect a response. |
| 37 | */ |
| 38 | #define MMC_RSP_NONE (0) |
| 39 | #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
| 40 | #define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY) |
| 41 | #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC) |
| 42 | #define MMC_RSP_R3 (MMC_RSP_PRESENT) |
| 43 | #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC) |
| 44 | |
| 45 | #define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE)) |
| 46 | |
| 47 | /* |
| 48 | * These are the command types. |
| 49 | */ |
| 50 | #define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK) |
| 51 | |
| 52 | #define MMC_ERR_NONE 0 |
| 53 | #define MMC_ERR_TIMEOUT 1 |
| 54 | #define MMC_ERR_BADCRC 2 |
| 55 | #define MMC_ERR_FIFO 3 |
| 56 | #define MMC_ERR_FAILED 4 |
| 57 | #define MMC_ERR_INVALID 5 |
| 58 | |
| 59 | struct mmc_command { |
| 60 | u32 opcode; |
| 61 | u32 arg; |
| 62 | u32 resp[4]; |
| 63 | unsigned int flags; /* expected response type */ |
| 64 | struct mmc_data *data; /* data segment associated with cmd */ |
| 65 | struct mmc_request *mrq; /* associated request */ |
| 66 | unsigned int retries; /* max number of retries */ |
| 67 | unsigned int error; /* command error */ |
| 68 | |
| 69 | }; |
| 70 | |
| 71 | struct mmc_data { |
| 72 | unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */ |
| 73 | unsigned int timeout_clks; /* data timeout (in clocks) */ |
| 74 | unsigned int blksz_bits; /* data block size */ |
| 75 | unsigned int blksz; /* data block size */ |
| 76 | unsigned int blocks; /* number of blocks */ |
| 77 | unsigned int error; /* data error */ |
| 78 | unsigned int flags; |
| 79 | |
| 80 | #define MMC_DATA_WRITE (1 << 8) |
| 81 | #define MMC_DATA_READ (1 << 9) |
| 82 | #define MMC_DATA_STREAM (1 << 10) |
| 83 | #define MMC_DATA_MULTI (1 << 11) |
| 84 | |
| 85 | unsigned int bytes_xfered; |
| 86 | |
| 87 | struct mmc_command *stop; /* stop command */ |
| 88 | struct mmc_request *mrq; /* associated request */ |
| 89 | |
| 90 | unsigned int sg_len; /* size of scatter list */ |
| 91 | struct scatterlist *sg; /* I/O scatter list */ |
| 92 | }; |
| 93 | |
| 94 | struct mmc_request { |
| 95 | struct mmc_command *cmd; |
| 96 | struct mmc_data *data; |
| 97 | struct mmc_command *stop; |
| 98 | |
| 99 | void *done_data; /* completion data */ |
| 100 | void (*done)(struct mmc_request *);/* completion function */ |
| 101 | }; |
| 102 | |
| 103 | struct mmc_host; |
| 104 | struct mmc_card; |
| 105 | |
| 106 | extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *); |
| 107 | extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); |
| 108 | extern int mmc_wait_for_app_cmd(struct mmc_host *, unsigned int, |
| 109 | struct mmc_command *, int); |
| 110 | |
| 111 | extern int __mmc_claim_host(struct mmc_host *host, struct mmc_card *card); |
| 112 | |
| 113 | static inline void mmc_claim_host(struct mmc_host *host) |
| 114 | { |
| 115 | __mmc_claim_host(host, (struct mmc_card *)-1); |
| 116 | } |
| 117 | |
| 118 | extern void mmc_release_host(struct mmc_host *host); |
| 119 | |
| 120 | #endif |
| 121 | |
