LCOV - code coverage report
Current view: top level - include/linux/mmc - core.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2014-02-18 Functions: 0 0 -
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  *  linux/include/linux/mmc/core.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 LINUX_MMC_CORE_H
       9                 :            : #define LINUX_MMC_CORE_H
      10                 :            : 
      11                 :            : #include <linux/interrupt.h>
      12                 :            : #include <linux/completion.h>
      13                 :            : 
      14                 :            : struct request;
      15                 :            : struct mmc_data;
      16                 :            : struct mmc_request;
      17                 :            : 
      18                 :            : struct mmc_command {
      19                 :            :         u32                     opcode;
      20                 :            :         u32                     arg;
      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)
      24                 :            :         u32                     resp[4];
      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 */
      31                 :            : 
      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)
      37                 :            : 
      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 */
      42                 :            : 
      43                 :            : /*
      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.
      47                 :            :  */
      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)
      57                 :            : 
      58                 :            : #define mmc_resp_type(cmd)      ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
      59                 :            : 
      60                 :            : /*
      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.
      64                 :            :  */
      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)
      72                 :            : 
      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))
      75                 :            : 
      76                 :            : /*
      77                 :            :  * These are the command types.
      78                 :            :  */
      79                 :            : #define mmc_cmd_type(cmd)       ((cmd)->flags & MMC_CMD_MASK)
      80                 :            : 
      81                 :            :         unsigned int            retries;        /* max number of retries */
      82                 :            :         unsigned int            error;          /* command error */
      83                 :            : 
      84                 :            : /*
      85                 :            :  * Standard errno values are used for errors, but some have specific
      86                 :            :  * meaning in the MMC layer:
      87                 :            :  *
      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
      91                 :            :  *              or bad end bit)
      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
      96                 :            :  */
      97                 :            : 
      98                 :            :         unsigned int            cmd_timeout_ms; /* in milliseconds */
      99                 :            :         /* Set this flag only for blocking sanitize request */
     100                 :            :         bool                    sanitize_busy;
     101                 :            : 
     102                 :            :         struct mmc_data         *data;          /* data segment associated with cmd */
     103                 :            :         struct mmc_request      *mrq;           /* associated request */
     104                 :            : };
     105                 :            : 
     106                 :            : struct mmc_data {
     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                 :            :         unsigned int            error;          /* data error */
     112                 :            :         unsigned int            flags;
     113                 :            : 
     114                 :            : #define MMC_DATA_WRITE  (1 << 8)
     115                 :            : #define MMC_DATA_READ   (1 << 9)
     116                 :            : #define MMC_DATA_STREAM (1 << 10)
     117                 :            : 
     118                 :            :         unsigned int            bytes_xfered;
     119                 :            : 
     120                 :            :         struct mmc_command      *stop;          /* stop command */
     121                 :            :         struct mmc_request      *mrq;           /* associated request */
     122                 :            : 
     123                 :            :         unsigned int            sg_len;         /* size of scatter list */
     124                 :            :         struct scatterlist      *sg;            /* I/O scatter list */
     125                 :            :         s32                     host_cookie;    /* host private data */
     126                 :            : };
     127                 :            : 
     128                 :            : struct mmc_host;
     129                 :            : struct mmc_request {
     130                 :            :         struct mmc_command      *sbc;           /* SET_BLOCK_COUNT for multiblock */
     131                 :            :         struct mmc_command      *cmd;
     132                 :            :         struct mmc_data         *data;
     133                 :            :         struct mmc_command      *stop;
     134                 :            : 
     135                 :            :         struct completion       completion;
     136                 :            :         void                    (*done)(struct mmc_request *);/* completion function */
     137                 :            :         struct mmc_host         *host;
     138                 :            : };
     139                 :            : 
     140                 :            : struct mmc_card;
     141                 :            : struct mmc_async_req;
     142                 :            : 
     143                 :            : extern int mmc_stop_bkops(struct mmc_card *);
     144                 :            : extern int mmc_read_bkops_status(struct mmc_card *);
     145                 :            : extern struct mmc_async_req *mmc_start_req(struct mmc_host *,
     146                 :            :                                            struct mmc_async_req *, int *);
     147                 :            : extern int mmc_interrupt_hpi(struct mmc_card *);
     148                 :            : extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
     149                 :            : extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
     150                 :            : extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *);
     151                 :            : extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
     152                 :            :         struct mmc_command *, int);
     153                 :            : extern void mmc_start_bkops(struct mmc_card *card, bool from_exception);
     154                 :            : extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, bool,
     155                 :            :                         bool);
     156                 :            : extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int);
     157                 :            : extern int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
     158                 :            : 
     159                 :            : #define MMC_ERASE_ARG           0x00000000
     160                 :            : #define MMC_SECURE_ERASE_ARG    0x80000000
     161                 :            : #define MMC_TRIM_ARG            0x00000001
     162                 :            : #define MMC_DISCARD_ARG         0x00000003
     163                 :            : #define MMC_SECURE_TRIM1_ARG    0x80000001
     164                 :            : #define MMC_SECURE_TRIM2_ARG    0x80008000
     165                 :            : 
     166                 :            : #define MMC_SECURE_ARGS         0x80000000
     167                 :            : #define MMC_TRIM_ARGS           0x00008001
     168                 :            : 
     169                 :            : extern int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
     170                 :            :                      unsigned int arg);
     171                 :            : extern int mmc_can_erase(struct mmc_card *card);
     172                 :            : extern int mmc_can_trim(struct mmc_card *card);
     173                 :            : extern int mmc_can_discard(struct mmc_card *card);
     174                 :            : extern int mmc_can_sanitize(struct mmc_card *card);
     175                 :            : extern int mmc_can_secure_erase_trim(struct mmc_card *card);
     176                 :            : extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
     177                 :            :                                    unsigned int nr);
     178                 :            : extern unsigned int mmc_calc_max_discard(struct mmc_card *card);
     179                 :            : 
     180                 :            : extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
     181                 :            : extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
     182                 :            :                               bool is_rel_write);
     183                 :            : extern int mmc_hw_reset(struct mmc_host *host);
     184                 :            : extern int mmc_hw_reset_check(struct mmc_host *host);
     185                 :            : extern int mmc_can_reset(struct mmc_card *card);
     186                 :            : 
     187                 :            : extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *);
     188                 :            : extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int);
     189                 :            : 
     190                 :            : extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
     191                 :            : extern void mmc_release_host(struct mmc_host *host);
     192                 :            : 
     193                 :            : extern void mmc_get_card(struct mmc_card *card);
     194                 :            : extern void mmc_put_card(struct mmc_card *card);
     195                 :            : 
     196                 :            : extern int mmc_flush_cache(struct mmc_card *);
     197                 :            : 
     198                 :            : extern int mmc_detect_card_removed(struct mmc_host *host);
     199                 :            : 
     200                 :            : /**
     201                 :            :  *      mmc_claim_host - exclusively claim a host
     202                 :            :  *      @host: mmc host to claim
     203                 :            :  *
     204                 :            :  *      Claim a host for a set of operations.
     205                 :            :  */
     206                 :            : static inline void mmc_claim_host(struct mmc_host *host)
     207                 :            : {
     208                 :      87231 :         __mmc_claim_host(host, NULL);
     209                 :            : }
     210                 :            : 
     211                 :            : struct device_node;
     212                 :            : extern u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
     213                 :            : extern int mmc_of_parse_voltage(struct device_node *np, u32 *mask);
     214                 :            : 
     215                 :            : #endif /* LINUX_MMC_CORE_H */

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