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           structure;
  28         unsigned char           mmca_vsn;
  29         unsigned short          cmdclass;
  30         unsigned short          tacc_clks;
  31         unsigned int            tacc_ns;
  32         unsigned int            r2w_factor;
  33         unsigned int            max_dtr;
  34         unsigned int            erase_size;             /* In sectors */
  35         unsigned int            read_blkbits;
  36         unsigned int            write_blkbits;
  37         unsigned int            capacity;
  38         unsigned int            read_partial:1,
  39                                 read_misalign:1,
  40                                 write_partial:1,
  41                                 write_misalign:1;
  42 };
  43
  44 struct mmc_ext_csd {
  45         u8                      rev;
  46         u8                      erase_group_def;
  47         u8                      sec_feature_support;
  48         unsigned int            sa_timeout;             /* Units: 100ns */
  49         unsigned int            hs_max_dtr;
  50         unsigned int            sectors;
  51         unsigned int            card_type;
  52         unsigned int            hc_erase_size;          /* In sectors */
  53         unsigned int            hc_erase_timeout;       /* In milliseconds */
  54         unsigned int            sec_trim_mult;  /* Secure trim multiplier  */
  55         unsigned int            sec_erase_mult; /* Secure erase multiplier */
  56         unsigned int            trim_timeout;           /* In milliseconds */
  57         bool                    enhanced_area_en;       /* enable bit */
  58         unsigned long long      enhanced_area_offset;   /* Units: Byte */
  59         unsigned int            enhanced_area_size;     /* Units: KB */
  60 };
  61
  62 struct sd_scr {
  63         unsigned char           sda_vsn;
  64         unsigned char           bus_widths;
  65 #define SD_SCR_BUS_WIDTH_1      (1<<0)
  66 #define SD_SCR_BUS_WIDTH_4      (1<<2)
  67 };
  68
  69 struct sd_ssr {
  70         unsigned int            au;                     /* In sectors */
  71         unsigned int            erase_timeout;          /* In milliseconds */
  72         unsigned int            erase_offset;           /* In milliseconds */
  73 };
  74
  75 struct sd_switch_caps {
  76         unsigned int            hs_max_dtr;
  77 };
  78
  79 struct sdio_cccr {
  80         unsigned int            sdio_vsn;
  81         unsigned int            sd_vsn;
  82         unsigned int            multi_block:1,
  83                                 low_speed:1,
  84                                 wide_bus:1,
  85                                 high_power:1,
  86                                 high_speed:1,
  87                                 disable_cd:1;
  88 };
  89
  90 struct sdio_cis {
  91         unsigned short          vendor;
  92         unsigned short          device;
  93         unsigned short          blksize;
  94         unsigned int            max_dtr;
  95 };
  96
  97 struct mmc_host;
  98 struct sdio_func;
  99 struct sdio_func_tuple;
 100
 101 #define SDIO_MAX_FUNCS          7
 102
 103 /*
 104  * MMC device
 105  */
 106 struct mmc_card {
 107         struct mmc_host         *host;          /* the host this device belongs to */
 108         struct device           dev;            /* the device */
 109         unsigned int            rca;            /* relative card address of device */
 110         unsigned int            type;           /* card type */
 111 #define MMC_TYPE_MMC            0               /* MMC card */
 112 #define MMC_TYPE_SD             1               /* SD card */
 113 #define MMC_TYPE_SDIO           2               /* SDIO card */
 114 #define MMC_TYPE_SD_COMBO       3               /* SD combo (IO+mem) card */
 115         unsigned int            state;          /* (our) card state */
 116 #define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
 117 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 118 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 119 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
 120 #define MMC_STATE_HIGHSPEED_DDR (1<<4)          /* card is in high speed mode */
 121         unsigned int            quirks;         /* card quirks */
 122 #define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 123 #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1)    /* use func->cur_blksize */
 124                                                 /* for byte mode */
 125 #define MMC_QUIRK_NONSTD_SDIO   (1<<2)          /* non-standard SDIO card attached */
 126                                                 /* (missing CIA registers) */
 127
 128         unsigned int            erase_size;     /* erase size in sectors */
 129         unsigned int            erase_shift;    /* if erase unit is power 2 */
 130         unsigned int            pref_erase;     /* in sectors */
 131         u8                      erased_byte;    /* value of erased bytes */
 132
 133         u32                     raw_cid[4];     /* raw card CID */
 134         u32                     raw_csd[4];     /* raw card CSD */
 135         u32                     raw_scr[2];     /* raw card SCR */
 136         struct mmc_cid          cid;            /* card identification */
 137         struct mmc_csd          csd;            /* card specific */
 138         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
 139         struct sd_scr           scr;            /* extra SD information */
 140         struct sd_ssr           ssr;            /* yet more SD information */
 141         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
 142
 143         unsigned int            sdio_funcs;     /* number of SDIO functions */
 144         struct sdio_cccr        cccr;           /* common card info */
 145         struct sdio_cis         cis;            /* common tuple info */
 146         struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 147         unsigned                num_info;       /* number of info strings */
 148         const char              **info;         /* info strings */
 149         struct sdio_func_tuple  *tuples;        /* unknown common tuples */
 150
 151         struct dentry           *debugfs_root;
 152 };
 153
 154 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
 155 #define mmc_card_sd(c)          ((c)->type == MMC_TYPE_SD)
 156 #define mmc_card_sdio(c)        ((c)->type == MMC_TYPE_SDIO)
 157
 158 #define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
 159 #define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
 160 #define mmc_card_highspeed(c)   ((c)->state & MMC_STATE_HIGHSPEED)
 161 #define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
 162 #define mmc_card_ddr_mode(c)    ((c)->state & MMC_STATE_HIGHSPEED_DDR)
 163
 164 #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
 165 #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
 166 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 167 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 168 #define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
 169
 170 static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
 171 {
 172         return c->quirks & MMC_QUIRK_LENIENT_FN0;
 173 }
 174
 175 static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
 176 {
 177         return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 178 }
 179
 180 #define mmc_card_name(c)        ((c)->cid.prod_name)
 181 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 182
 183 #define mmc_dev_to_card(d)      container_of(d, struct mmc_card, dev)
 184
 185 #define mmc_list_to_card(l)     container_of(l, struct mmc_card, node)
 186 #define mmc_get_drvdata(c)      dev_get_drvdata(&(c)->dev)
 187 #define mmc_set_drvdata(c,d)    dev_set_drvdata(&(c)->dev, d)
 188
 189 /*
 190  * MMC device driver (e.g., Flash card, I/O card...)
 191  */
 192 struct mmc_driver {
 193         struct device_driver drv;
 194         int (*probe)(struct mmc_card *);
 195         void (*remove)(struct mmc_card *);
 196         int (*suspend)(struct mmc_card *, pm_message_t);
 197         int (*resume)(struct mmc_card *);
 198 };
 199
 200 extern int mmc_register_driver(struct mmc_driver *);
 201 extern void mmc_unregister_driver(struct mmc_driver *);
 202
 203 #endif