include/linux/mmc/card.h

   1 /*
   2  *  linux/include/linux/mmc/card.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  *  Card driver specific definitions.
   9  */
  10 #ifndef LINUX_MMC_CARD_H
  11 #define LINUX_MMC_CARD_H
  12
  13 #include <linux/mmc/core.h>
  14
  15 struct mmc_cid {
  16         unsigned int            manfid;
  17         char                    prod_name[8];
  18         unsigned int            serial;
  19         unsigned short          oemid;
  20         unsigned short          year;
  21         unsigned char           hwrev;
  22         unsigned char           fwrev;
  23         unsigned char           month;
  24 };
  25
  26 struct mmc_csd {
  27         unsigned char           mmca_vsn;
  28         unsigned short          cmdclass;
  29         unsigned short          tacc_clks;
  30         unsigned int            tacc_ns;
  31         unsigned int            r2w_factor;
  32         unsigned int            max_dtr;
  33         unsigned int            read_blkbits;
  34         unsigned int            write_blkbits;
  35         unsigned int            capacity;
  36         unsigned int            read_partial:1,
  37                                 read_misalign:1,
  38                                 write_partial:1,
  39                                 write_misalign:1;
  40 };
  41
  42 struct mmc_ext_csd {
  43         u8                      rev;
  44         unsigned int            sa_timeout;             /* Units: 100ns */
  45         unsigned int            hs_max_dtr;
  46         unsigned int            sectors;
  47 };
  48
  49 struct sd_scr {
  50         unsigned char           sda_vsn;
  51         unsigned char           bus_widths;
  52 #define SD_SCR_BUS_WIDTH_1      (1<<0)
  53 #define SD_SCR_BUS_WIDTH_4      (1<<2)
  54 };
  55
  56 struct sd_switch_caps {
  57         unsigned int            hs_max_dtr;
  58 };
  59
  60 struct sdio_cccr {
  61         unsigned int            sdio_vsn;
  62         unsigned int            sd_vsn;
  63         unsigned int            multi_block:1,
  64                                 low_speed:1,
  65                                 wide_bus:1,
  66                                 high_power:1,
  67                                 high_speed:1,
  68                                 disable_cd:1;
  69 };
  70
  71 struct sdio_cis {
  72         unsigned short          vendor;
  73         unsigned short          device;
  74         unsigned short          blksize;
  75         unsigned int            max_dtr;
  76 };
  77
  78 struct mmc_host;
  79 struct sdio_func;
  80 struct sdio_func_tuple;
  81
  82 #define SDIO_MAX_FUNCS          7
  83
  84 /*
  85  * MMC device
  86  */
  87 struct mmc_card {
  88         struct mmc_host         *host;          /* the host this device belongs to */
  89         struct device           dev;            /* the device */
  90         unsigned int            rca;            /* relative card address of device */
  91         unsigned int            type;           /* card type */
  92 #define MMC_TYPE_MMC            0               /* MMC card */
  93 #define MMC_TYPE_SD             1               /* SD card */
  94 #define MMC_TYPE_SDIO           2               /* SDIO card */
  95         unsigned int            state;          /* (our) card state */
  96 #define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
  97 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
  98 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
  99 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
 100         unsigned int            quirks;         /* card quirks */
 101 #define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 102 #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1)    /* use func->cur_blksize */
 103                                                 /* for byte mode */
 104
 105         u32                     raw_cid[4];     /* raw card CID */
 106         u32                     raw_csd[4];     /* raw card CSD */
 107         u32                     raw_scr[2];     /* raw card SCR */
 108         struct mmc_cid          cid;            /* card identification */
 109         struct mmc_csd          csd;            /* card specific */
 110         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
 111         struct sd_scr           scr;            /* extra SD information */
 112         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
 113
 114         unsigned int            sdio_funcs;     /* number of SDIO functions */
 115         struct sdio_cccr        cccr;           /* common card info */
 116         struct sdio_cis         cis;            /* common tuple info */
 117         struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 118         unsigned                num_info;       /* number of info strings */
 119         const char              **info;         /* info strings */
 120         struct sdio_func_tuple  *tuples;        /* unknown common tuples */
 121
 122         struct dentry           *debugfs_root;
 123 };
 124
 125 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
 126 #define mmc_card_sd(c)          ((c)->type == MMC_TYPE_SD)
 127 #define mmc_card_sdio(c)        ((c)->type == MMC_TYPE_SDIO)
 128
 129 #define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
 130 #define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
 131 #define mmc_card_highspeed(c)   ((c)->state & MMC_STATE_HIGHSPEED)
 132 #define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
 133
 134 #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
 135 #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
 136 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 137 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 138
 139 static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
 140 {
 141         return c->quirks & MMC_QUIRK_LENIENT_FN0;
 142 }
 143
 144 static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
 145 {
 146         return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 147 }
 148
 149 #define mmc_card_name(c)        ((c)->cid.prod_name)
 150 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 151
 152 #define mmc_list_to_card(l)     container_of(l, struct mmc_card, node)
 153 #define mmc_get_drvdata(c)      dev_get_drvdata(&(c)->dev)
 154 #define mmc_set_drvdata(c,d)    dev_set_drvdata(&(c)->dev, d)
 155
 156 /*
 157  * MMC device driver (e.g., Flash card, I/O card...)
 158  */
 159 struct mmc_driver {
 160         struct device_driver drv;
 161         int (*probe)(struct mmc_card *);
 162         void (*remove)(struct mmc_card *);
 163         int (*suspend)(struct mmc_card *, pm_message_t);
 164         int (*resume)(struct mmc_card *);
 165 };
 166
 167 extern int mmc_register_driver(struct mmc_driver *);
 168 extern void mmc_unregister_driver(struct mmc_driver *);
 169
 170 #endif