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237 lines
8.1 KiB
237 lines
8.1 KiB
/* |
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* linux/include/linux/mmc/core.h |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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*/ |
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#ifndef LINUX_MMC_CORE_H |
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#define LINUX_MMC_CORE_H |
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#include <linux/interrupt.h> |
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#include <linux/completion.h> |
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struct request; |
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struct mmc_data; |
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struct mmc_request; |
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struct mmc_command { |
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u32 opcode; |
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u32 arg; |
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#define MMC_CMD23_ARG_REL_WR (1 << 31) |
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#define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30)) |
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#define MMC_CMD23_ARG_TAG_REQ (1 << 29) |
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u32 resp[4]; |
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unsigned int flags; /* expected response type */ |
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#define MMC_RSP_PRESENT (1 << 0) |
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#define MMC_RSP_136 (1 << 1) /* 136 bit response */ |
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#define MMC_RSP_CRC (1 << 2) /* expect valid crc */ |
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#define MMC_RSP_BUSY (1 << 3) /* card may send busy */ |
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#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */ |
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#define MMC_CMD_MASK (3 << 5) /* non-SPI command type */ |
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#define MMC_CMD_AC (0 << 5) |
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#define MMC_CMD_ADTC (1 << 5) |
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#define MMC_CMD_BC (2 << 5) |
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#define MMC_CMD_BCR (3 << 5) |
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#define MMC_RSP_SPI_S1 (1 << 7) /* one status byte */ |
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#define MMC_RSP_SPI_S2 (1 << 8) /* second byte */ |
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#define MMC_RSP_SPI_B4 (1 << 9) /* four data bytes */ |
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#define MMC_RSP_SPI_BUSY (1 << 10) /* card may send busy */ |
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/* |
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* These are the native response types, and correspond to valid bit |
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* patterns of the above flags. One additional valid pattern |
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* is all zeros, which means we don't expect a response. |
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*/ |
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#define MMC_RSP_NONE (0) |
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#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
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#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY) |
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#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC) |
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#define MMC_RSP_R3 (MMC_RSP_PRESENT) |
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#define MMC_RSP_R4 (MMC_RSP_PRESENT) |
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#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
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#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
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#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE) |
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#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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/* |
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* These are the SPI response types for MMC, SD, and SDIO cards. |
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* Commands return R1, with maybe more info. Zero is an error type; |
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* callers must always provide the appropriate MMC_RSP_SPI_Rx flags. |
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*/ |
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#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1) |
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#define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY) |
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#define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2) |
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#define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
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#define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
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#define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2) |
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#define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4) |
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#define mmc_spi_resp_type(cmd) ((cmd)->flags & \ |
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(MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4)) |
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/* |
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* These are the command types. |
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*/ |
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#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK) |
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unsigned int retries; /* max number of retries */ |
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int error; /* command error */ |
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/* |
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* Standard errno values are used for errors, but some have specific |
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* meaning in the MMC layer: |
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* |
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* ETIMEDOUT Card took too long to respond |
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* EILSEQ Basic format problem with the received or sent data |
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* (e.g. CRC check failed, incorrect opcode in response |
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* or bad end bit) |
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* EINVAL Request cannot be performed because of restrictions |
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* in hardware and/or the driver |
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* ENOMEDIUM Host can determine that the slot is empty and is |
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* actively failing requests |
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*/ |
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unsigned int busy_timeout; /* busy detect timeout in ms */ |
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/* Set this flag only for blocking sanitize request */ |
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bool sanitize_busy; |
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struct mmc_data *data; /* data segment associated with cmd */ |
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struct mmc_request *mrq; /* associated request */ |
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}; |
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struct mmc_data { |
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unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */ |
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unsigned int timeout_clks; /* data timeout (in clocks) */ |
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unsigned int blksz; /* data block size */ |
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unsigned int blocks; /* number of blocks */ |
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int error; /* data error */ |
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unsigned int flags; |
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#define MMC_DATA_WRITE (1 << 8) |
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#define MMC_DATA_READ (1 << 9) |
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#define MMC_DATA_STREAM (1 << 10) |
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unsigned int bytes_xfered; |
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struct mmc_command *stop; /* stop command */ |
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struct mmc_request *mrq; /* associated request */ |
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unsigned int sg_len; /* size of scatter list */ |
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int sg_count; /* mapped sg entries */ |
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struct scatterlist *sg; /* I/O scatter list */ |
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s32 host_cookie; /* host private data */ |
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}; |
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struct mmc_host; |
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struct mmc_request { |
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struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */ |
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struct mmc_command *cmd; |
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struct mmc_data *data; |
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struct mmc_command *stop; |
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struct completion completion; |
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void (*done)(struct mmc_request *);/* completion function */ |
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struct mmc_host *host; |
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#ifdef CONFIG_MTK_EMMC_CQ_SUPPORT |
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struct mmc_async_req *areq; |
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int flags; |
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struct list_head link; |
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struct list_head hlist; |
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#endif |
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#if defined(CONFIG_MTK_HW_FDE) || defined(CONFIG_HIE) |
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unsigned int bi_hw_fde; |
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unsigned int bi_key_idx; |
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bool is_mmc_req; /* request is from mmc layer */ |
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#endif |
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ktime_t io_start; |
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#ifdef CONFIG_BLOCK |
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int lat_hist_enabled; |
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#endif |
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}; |
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struct mmc_card; |
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struct mmc_async_req; |
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extern int mmc_stop_bkops(struct mmc_card *); |
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extern int mmc_read_bkops_status(struct mmc_card *); |
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extern struct mmc_async_req *mmc_start_req(struct mmc_host *, |
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struct mmc_async_req *, int *); |
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extern int mmc_interrupt_hpi(struct mmc_card *); |
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extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *); |
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extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); |
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extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *); |
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extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, |
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struct mmc_command *, int); |
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extern void mmc_start_bkops(struct mmc_card *card, bool from_exception); |
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extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); |
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extern int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error); |
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extern int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd); |
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#define MMC_ERASE_ARG 0x00000000 |
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#define MMC_SECURE_ERASE_ARG 0x80000000 |
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#define MMC_TRIM_ARG 0x00000001 |
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#define MMC_DISCARD_ARG 0x00000003 |
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#define MMC_SECURE_TRIM1_ARG 0x80000001 |
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#define MMC_SECURE_TRIM2_ARG 0x80008000 |
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#define MMC_SECURE_ARGS 0x80000000 |
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#define MMC_TRIM_ARGS 0x00008001 |
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extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, |
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unsigned int arg); |
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extern int mmc_can_erase(struct mmc_card *card); |
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extern int mmc_can_trim(struct mmc_card *card); |
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extern int mmc_can_discard(struct mmc_card *card); |
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extern int mmc_can_sanitize(struct mmc_card *card); |
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extern int mmc_can_secure_erase_trim(struct mmc_card *card); |
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extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, |
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unsigned int nr); |
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extern unsigned int mmc_calc_max_discard(struct mmc_card *card); |
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extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); |
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extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, |
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bool is_rel_write); |
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extern int mmc_hw_reset(struct mmc_host *host); |
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extern int mmc_can_reset(struct mmc_card *card); |
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extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *); |
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extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int); |
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extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort); |
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extern void mmc_release_host(struct mmc_host *host); |
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extern void mmc_get_card(struct mmc_card *card); |
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extern void mmc_put_card(struct mmc_card *card); |
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extern int mmc_flush_cache(struct mmc_card *); |
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extern int mmc_detect_card_removed(struct mmc_host *host); |
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extern int mmc_reinit_oldcard(struct mmc_host *host); |
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#ifdef CONFIG_MTK_EMMC_CQ_SUPPORT |
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extern int mmc_blk_cmdq_switch(struct mmc_card *card, int enable); |
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#endif |
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/** |
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* mmc_claim_host - exclusively claim a host |
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* @host: mmc host to claim |
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* |
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* Claim a host for a set of operations. |
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*/ |
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static inline void mmc_claim_host(struct mmc_host *host) |
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{ |
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__mmc_claim_host(host, NULL); |
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} |
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struct device_node; |
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extern u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); |
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extern int mmc_of_parse_voltage(struct device_node *np, u32 *mask); |
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#endif /* LINUX_MMC_CORE_H */
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