| /* |
| * linux/include/linux/mmc/core.h |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef LINUX_MMC_CORE_H |
| #define LINUX_MMC_CORE_H |
| |
| #include <linux/interrupt.h> |
| #include <linux/completion.h> |
| |
| struct request; |
| struct mmc_data; |
| struct mmc_request; |
| |
| struct mmc_command { |
| u32 opcode; |
| u32 arg; |
| u32 resp[4]; |
| unsigned int flags; /* expected response type */ |
| #define MMC_RSP_PRESENT (1 << 0) |
| #define MMC_RSP_136 (1 << 1) /* 136 bit response */ |
| #define MMC_RSP_CRC (1 << 2) /* expect valid crc */ |
| #define MMC_RSP_BUSY (1 << 3) /* card may send busy */ |
| #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */ |
| |
| #define MMC_CMD_MASK (3 << 5) /* non-SPI command type */ |
| #define MMC_CMD_AC (0 << 5) |
| #define MMC_CMD_ADTC (1 << 5) |
| #define MMC_CMD_BC (2 << 5) |
| #define MMC_CMD_BCR (3 << 5) |
| |
| #define MMC_RSP_SPI_S1 (1 << 7) /* one status byte */ |
| #define MMC_RSP_SPI_S2 (1 << 8) /* second byte */ |
| #define MMC_RSP_SPI_B4 (1 << 9) /* four data bytes */ |
| #define MMC_RSP_SPI_BUSY (1 << 10) /* card may send busy */ |
| |
| /* |
| * These are the native response types, and correspond to valid bit |
| * patterns of the above flags. One additional valid pattern |
| * is all zeros, which means we don't expect a response. |
| */ |
| #define MMC_RSP_NONE (0) |
| #define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
| #define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY) |
| #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC) |
| #define MMC_RSP_R3 (MMC_RSP_PRESENT) |
| #define MMC_RSP_R4 (MMC_RSP_PRESENT) |
| #define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
| #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
| #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
| |
| #define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE)) |
| |
| /* |
| * These are the SPI response types for MMC, SD, and SDIO cards. |
| * Commands return R1, with maybe more info. Zero is an error type; |
| * callers must always provide the appropriate MMC_RSP_SPI_Rx flags. |
| */ |
| #define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1) |
| #define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY) |
| #define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2) |
| #define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
| #define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
| #define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2) |
| #define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
| |
| #define mmc_spi_resp_type(cmd) ((cmd)->flags & \ |
| (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4)) |
| |
| /* |
| * These are the command types. |
| */ |
| #define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK) |
| |
| unsigned int retries; /* max number of retries */ |
| unsigned int error; /* command error */ |
| |
| /* |
| * Standard errno values are used for errors, but some have specific |
| * meaning in the MMC layer: |
| * |
| * ETIMEDOUT Card took too long to respond |
| * EILSEQ Basic format problem with the received or sent data |
| * (e.g. CRC check failed, incorrect opcode in response |
| * or bad end bit) |
| * EINVAL Request cannot be performed because of restrictions |
| * in hardware and/or the driver |
| * ENOMEDIUM Host can determine that the slot is empty and is |
| * actively failing requests |
| */ |
| |
| unsigned int cmd_timeout_ms; /* in milliseconds */ |
| |
| struct mmc_data *data; /* data segment associated with cmd */ |
| struct mmc_request *mrq; /* associated request */ |
| }; |
| |
| struct mmc_data { |
| unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */ |
| unsigned int timeout_clks; /* data timeout (in clocks) */ |
| unsigned int blksz; /* data block size */ |
| unsigned int blocks; /* number of blocks */ |
| unsigned int error; /* data error */ |
| unsigned int flags; |
| |
| #define MMC_DATA_WRITE (1 << 8) |
| #define MMC_DATA_READ (1 << 9) |
| #define MMC_DATA_STREAM (1 << 10) |
| |
| unsigned int bytes_xfered; |
| |
| struct mmc_command *stop; /* stop command */ |
| struct mmc_request *mrq; /* associated request */ |
| |
| unsigned int sg_len; /* size of scatter list */ |
| struct scatterlist *sg; /* I/O scatter list */ |
| s32 host_cookie; /* host private data */ |
| }; |
| |
| struct mmc_host; |
| struct mmc_request { |
| struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */ |
| struct mmc_command *cmd; |
| struct mmc_data *data; |
| struct mmc_command *stop; |
| |
| struct completion completion; |
| void (*done)(struct mmc_request *);/* completion function */ |
| struct mmc_host *host; |
| }; |
| |
| struct mmc_card; |
| struct mmc_async_req; |
| |
| extern int mmc_stop_bkops(struct mmc_card *); |
| extern int mmc_read_bkops_status(struct mmc_card *); |
| extern struct mmc_async_req *mmc_start_req(struct mmc_host *, |
| struct mmc_async_req *, int *); |
| extern int mmc_interrupt_hpi(struct mmc_card *); |
| extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *); |
| extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); |
| extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *); |
| extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, |
| struct mmc_command *, int); |
| extern void mmc_start_bkops(struct mmc_card *card, bool from_exception); |
| extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, bool); |
| extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); |
| |
| #define MMC_ERASE_ARG 0x00000000 |
| #define MMC_SECURE_ERASE_ARG 0x80000000 |
| #define MMC_TRIM_ARG 0x00000001 |
| #define MMC_DISCARD_ARG 0x00000003 |
| #define MMC_SECURE_TRIM1_ARG 0x80000001 |
| #define MMC_SECURE_TRIM2_ARG 0x80008000 |
| |
| #define MMC_SECURE_ARGS 0x80000000 |
| #define MMC_TRIM_ARGS 0x00008001 |
| |
| extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, |
| unsigned int arg); |
| extern int mmc_can_erase(struct mmc_card *card); |
| extern int mmc_can_trim(struct mmc_card *card); |
| extern int mmc_can_discard(struct mmc_card *card); |
| extern int mmc_can_sanitize(struct mmc_card *card); |
| extern int mmc_can_secure_erase_trim(struct mmc_card *card); |
| extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, |
| unsigned int nr); |
| extern unsigned int mmc_calc_max_discard(struct mmc_card *card); |
| |
| extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); |
| extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, |
| bool is_rel_write); |
| extern int mmc_hw_reset(struct mmc_host *host); |
| extern int mmc_hw_reset_check(struct mmc_host *host); |
| extern int mmc_can_reset(struct mmc_card *card); |
| |
| extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *); |
| extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int); |
| |
| extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort); |
| extern void mmc_release_host(struct mmc_host *host); |
| extern int mmc_try_claim_host(struct mmc_host *host); |
| |
| extern int mmc_flush_cache(struct mmc_card *); |
| |
| extern int mmc_detect_card_removed(struct mmc_host *host); |
| |
| /** |
| * mmc_claim_host - exclusively claim a host |
| * @host: mmc host to claim |
| * |
| * Claim a host for a set of operations. |
| */ |
| static inline void mmc_claim_host(struct mmc_host *host) |
| { |
| __mmc_claim_host(host, NULL); |
| } |
| |
| extern u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); |
| |
| #endif /* LINUX_MMC_CORE_H */ |