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 #include <linux/mod_devicetable.h>
  15
  16 struct mmc_cid {
  17         unsigned int            manfid;
  18         char                    prod_name[8];
  19         unsigned int            serial;
  20         unsigned short          oemid;
  21         unsigned short          year;
  22         unsigned char           hwrev;
  23         unsigned char           fwrev;
  24         unsigned char           month;
  25 };
  26
  27 struct mmc_csd {
  28         unsigned char           structure;
  29         unsigned char           mmca_vsn;
  30         unsigned short          cmdclass;
  31         unsigned short          tacc_clks;
  32         unsigned int            tacc_ns;
  33         unsigned int            c_size;
  34         unsigned int            r2w_factor;
  35         unsigned int            max_dtr;
  36         unsigned int            erase_size;             /* In sectors */
  37         unsigned int            read_blkbits;
  38         unsigned int            write_blkbits;
  39         unsigned int            capacity;
  40         unsigned int            read_partial:1,
  41                                 read_misalign:1,
  42                                 write_partial:1,
  43                                 write_misalign:1;
  44 };
  45
  46 struct mmc_ext_csd {
  47         u8                      rev;
  48         u8                      erase_group_def;
  49         u8                      sec_feature_support;
  50         u8                      rel_sectors;
  51         u8                      rel_param;
  52         u8                      part_config;
  53         unsigned int            part_time;              /* Units: ms */
  54         unsigned int            sa_timeout;             /* Units: 100ns */
  55         unsigned int            hs_max_dtr;
  56         unsigned int            sectors;
  57         unsigned int            card_type;
  58         unsigned int            hc_erase_size;          /* In sectors */
  59         unsigned int            hc_erase_timeout;       /* In milliseconds */
  60         unsigned int            sec_trim_mult;  /* Secure trim multiplier  */
  61         unsigned int            sec_erase_mult; /* Secure erase multiplier */
  62         unsigned int            trim_timeout;           /* In milliseconds */
  63         bool                    enhanced_area_en;       /* enable bit */
  64         unsigned long long      enhanced_area_offset;   /* Units: Byte */
  65         unsigned int            enhanced_area_size;     /* Units: KB */
  66         unsigned int            boot_size;              /* in bytes */
  67         u8                      raw_partition_support;  /* 160 */
  68         u8                      raw_erased_mem_count;   /* 181 */
  69         u8                      raw_ext_csd_structure;  /* 194 */
  70         u8                      raw_card_type;          /* 196 */
  71         u8                      raw_s_a_timeout;                /* 217 */
  72         u8                      raw_hc_erase_gap_size;  /* 221 */
  73         u8                      raw_erase_timeout_mult; /* 223 */
  74         u8                      raw_hc_erase_grp_size;  /* 224 */
  75         u8                      raw_sec_trim_mult;      /* 229 */
  76         u8                      raw_sec_erase_mult;     /* 230 */
  77         u8                      raw_sec_feature_support;/* 231 */
  78         u8                      raw_trim_mult;          /* 232 */
  79         u8                      raw_sectors[4];         /* 212 - 4 bytes */
  80 };
  81
  82 struct sd_scr {
  83         unsigned char           sda_vsn;
  84         unsigned char           sda_spec3;
  85         unsigned char           bus_widths;
  86 #define SD_SCR_BUS_WIDTH_1      (1<<0)
  87 #define SD_SCR_BUS_WIDTH_4      (1<<2)
  88         unsigned char           cmds;
  89 #define SD_SCR_CMD20_SUPPORT   (1<<0)
  90 #define SD_SCR_CMD23_SUPPORT   (1<<1)
  91 };
  92
  93 struct sd_ssr {
  94         unsigned int            au;                     /* In sectors */
  95         unsigned int            erase_timeout;          /* In milliseconds */
  96         unsigned int            erase_offset;           /* In milliseconds */
  97 };
  98
  99 struct sd_switch_caps {
 100         unsigned int            hs_max_dtr;
 101         unsigned int            uhs_max_dtr;
 102 #define UHS_SDR104_MAX_DTR      208000000
 103 #define UHS_SDR50_MAX_DTR       100000000
 104 #define UHS_DDR50_MAX_DTR       50000000
 105 #define UHS_SDR25_MAX_DTR       UHS_DDR50_MAX_DTR
 106 #define UHS_SDR12_MAX_DTR       25000000
 107         unsigned int            sd3_bus_mode;
 108 #define UHS_SDR12_BUS_SPEED     0
 109 #define UHS_SDR25_BUS_SPEED     1
 110 #define UHS_SDR50_BUS_SPEED     2
 111 #define UHS_SDR104_BUS_SPEED    3
 112 #define UHS_DDR50_BUS_SPEED     4
 113
 114 #define SD_MODE_UHS_SDR12       (1 << UHS_SDR12_BUS_SPEED)
 115 #define SD_MODE_UHS_SDR25       (1 << UHS_SDR25_BUS_SPEED)
 116 #define SD_MODE_UHS_SDR50       (1 << UHS_SDR50_BUS_SPEED)
 117 #define SD_MODE_UHS_SDR104      (1 << UHS_SDR104_BUS_SPEED)
 118 #define SD_MODE_UHS_DDR50       (1 << UHS_DDR50_BUS_SPEED)
 119         unsigned int            sd3_drv_type;
 120 #define SD_DRIVER_TYPE_B        0x01
 121 #define SD_DRIVER_TYPE_A        0x02
 122 #define SD_DRIVER_TYPE_C        0x04
 123 #define SD_DRIVER_TYPE_D        0x08
 124         unsigned int            sd3_curr_limit;
 125 #define SD_SET_CURRENT_LIMIT_200        0
 126 #define SD_SET_CURRENT_LIMIT_400        1
 127 #define SD_SET_CURRENT_LIMIT_600        2
 128 #define SD_SET_CURRENT_LIMIT_800        3
 129
 130 #define SD_MAX_CURRENT_200      (1 << SD_SET_CURRENT_LIMIT_200)
 131 #define SD_MAX_CURRENT_400      (1 << SD_SET_CURRENT_LIMIT_400)
 132 #define SD_MAX_CURRENT_600      (1 << SD_SET_CURRENT_LIMIT_600)
 133 #define SD_MAX_CURRENT_800      (1 << SD_SET_CURRENT_LIMIT_800)
 134 };
 135
 136 struct sdio_cccr {
 137         unsigned int            sdio_vsn;
 138         unsigned int            sd_vsn;
 139         unsigned int            multi_block:1,
 140                                 low_speed:1,
 141                                 wide_bus:1,
 142                                 high_power:1,
 143                                 high_speed:1,
 144                                 disable_cd:1;
 145 };
 146
 147 struct sdio_cis {
 148         unsigned short          vendor;
 149         unsigned short          device;
 150         unsigned short          blksize;
 151         unsigned int            max_dtr;
 152 };
 153
 154 struct mmc_host;
 155 struct sdio_func;
 156 struct sdio_func_tuple;
 157
 158 #define SDIO_MAX_FUNCS          7
 159
 160 /*
 161  * MMC device
 162  */
 163 struct mmc_card {
 164         struct mmc_host         *host;          /* the host this device belongs to */
 165         struct device           dev;            /* the device */
 166         unsigned int            rca;            /* relative card address of device */
 167         unsigned int            type;           /* card type */
 168 #define MMC_TYPE_MMC            0               /* MMC card */
 169 #define MMC_TYPE_SD             1               /* SD card */
 170 #define MMC_TYPE_SDIO           2               /* SDIO card */
 171 #define MMC_TYPE_SD_COMBO       3               /* SD combo (IO+mem) card */
 172         unsigned int            state;          /* (our) card state */
 173 #define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
 174 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 175 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 176 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
 177 #define MMC_STATE_HIGHSPEED_DDR (1<<4)          /* card is in high speed mode */
 178 #define MMC_STATE_ULTRAHIGHSPEED (1<<5)         /* card is in ultra high speed mode */
 179 #define MMC_CARD_SDXC           (1<<6)          /* card is SDXC */
 180         unsigned int            quirks;         /* card quirks */
 181 #define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 182 #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1)    /* use func->cur_blksize */
 183                                                 /* for byte mode */
 184 #define MMC_QUIRK_NONSTD_SDIO   (1<<2)          /* non-standard SDIO card attached */
 185                                                 /* (missing CIA registers) */
 186 #define MMC_QUIRK_BROKEN_CLK_GATING (1<<3)      /* clock gating the sdio bus will make card fail */
 187 #define MMC_QUIRK_NONSTD_FUNC_IF (1<<4)         /* SDIO card has nonstd function interfaces */
 188 #define MMC_QUIRK_DISABLE_CD    (1<<5)          /* disconnect CD/DAT[3] resistor */
 189 #define MMC_QUIRK_INAND_CMD38   (1<<6)          /* iNAND devices have broken CMD38 */
 190 #define MMC_QUIRK_BLK_NO_CMD23  (1<<7)          /* Avoid CMD23 for regular multiblock */
 191
 192         unsigned int            erase_size;     /* erase size in sectors */
 193         unsigned int            erase_shift;    /* if erase unit is power 2 */
 194         unsigned int            pref_erase;     /* in sectors */
 195         u8                      erased_byte;    /* value of erased bytes */
 196
 197         u32                     raw_cid[4];     /* raw card CID */
 198         u32                     raw_csd[4];     /* raw card CSD */
 199         u32                     raw_scr[2];     /* raw card SCR */
 200         struct mmc_cid          cid;            /* card identification */
 201         struct mmc_csd          csd;            /* card specific */
 202         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
 203         struct sd_scr           scr;            /* extra SD information */
 204         struct sd_ssr           ssr;            /* yet more SD information */
 205         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
 206
 207         unsigned int            sdio_funcs;     /* number of SDIO functions */
 208         struct sdio_cccr        cccr;           /* common card info */
 209         struct sdio_cis         cis;            /* common tuple info */
 210         struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 211         struct sdio_func        *sdio_single_irq; /* SDIO function when only one IRQ active */
 212         unsigned                num_info;       /* number of info strings */
 213         const char              **info;         /* info strings */
 214         struct sdio_func_tuple  *tuples;        /* unknown common tuples */
 215
 216         unsigned int            sd_bus_speed;   /* Bus Speed Mode set for the card */
 217
 218         struct dentry           *debugfs_root;
 219 };
 220
 221 /*
 222  *  The world is not perfect and supplies us with broken mmc/sdio devices.
 223  *  For at least some of these bugs we need a work-around.
 224  */
 225
 226 struct mmc_fixup {
 227         /* CID-specific fields. */
 228         const char *name;
 229
 230         /* Valid revision range */
 231         u64 rev_start, rev_end;
 232
 233         unsigned int manfid;
 234         unsigned short oemid;
 235
 236         /* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
 237         u16 cis_vendor, cis_device;
 238
 239         void (*vendor_fixup)(struct mmc_card *card, int data);
 240         int data;
 241 };
 242
 243 #define CID_MANFID_ANY (-1u)
 244 #define CID_OEMID_ANY ((unsigned short) -1)
 245 #define CID_NAME_ANY (NULL)
 246
 247 #define END_FIXUP { 0 }
 248
 249 #define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end,        \
 250                    _cis_vendor, _cis_device,                            \
 251                    _fixup, _data)                                       \
 252         {                                                  \
 253                 .name = (_name),                           \
 254                 .manfid = (_manfid),                       \
 255                 .oemid = (_oemid),                         \
 256                 .rev_start = (_rev_start),                 \
 257                 .rev_end = (_rev_end),                     \
 258                 .cis_vendor = (_cis_vendor),               \
 259                 .cis_device = (_cis_device),               \
 260                 .vendor_fixup = (_fixup),                  \
 261                 .data = (_data),                           \
 262          }
 263
 264 #define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end,     \
 265                       _fixup, _data)                                    \
 266         _FIXUP_EXT(_name, _manfid,                                      \
 267                    _oemid, _rev_start, _rev_end,                        \
 268                    SDIO_ANY_ID, SDIO_ANY_ID,                            \
 269                    _fixup, _data)                                       \
 270
 271 #define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
 272         MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
 273
 274 #define SDIO_FIXUP(_vendor, _device, _fixup, _data)                     \
 275         _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY,                        \
 276                     CID_OEMID_ANY, 0, -1ull,                            \
 277                    _vendor, _device,                                    \
 278                    _fixup, _data)                                       \
 279
 280 #define cid_rev(hwrev, fwrev, year, month)      \
 281         (((u64) hwrev) << 40 |                  \
 282          ((u64) fwrev) << 32 |                  \
 283          ((u64) year) << 16 |                   \
 284          ((u64) month))
 285
 286 #define cid_rev_card(card)                \
 287         cid_rev(card->cid.hwrev,          \
 288                     card->cid.fwrev,      \
 289                     card->cid.year,       \
 290                     card->cid.month)
 291
 292 /*
 293  * Unconditionally quirk add/remove.
 294  */
 295
 296 static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
 297 {
 298         card->quirks |= data;
 299 }
 300
 301 static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
 302 {
 303         card->quirks &= ~data;
 304 }
 305
 306 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
 307 #define mmc_card_sd(c)          ((c)->type == MMC_TYPE_SD)
 308 #define mmc_card_sdio(c)        ((c)->type == MMC_TYPE_SDIO)
 309
 310 #define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
 311 #define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
 312 #define mmc_card_highspeed(c)   ((c)->state & MMC_STATE_HIGHSPEED)
 313 #define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
 314 #define mmc_card_ddr_mode(c)    ((c)->state & MMC_STATE_HIGHSPEED_DDR)
 315 #define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
 316 #define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
 317
 318 #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
 319 #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
 320 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 321 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 322 #define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
 323 #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 324 #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
 325
 326 /*
 327  * Quirk add/remove for MMC products.
 328  */
 329
 330 static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
 331 {
 332         if (mmc_card_mmc(card))
 333                 card->quirks |= data;
 334 }
 335
 336 static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
 337                                                    int data)
 338 {
 339         if (mmc_card_mmc(card))
 340                 card->quirks &= ~data;
 341 }
 342
 343 /*
 344  * Quirk add/remove for SD products.
 345  */
 346
 347 static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
 348 {
 349         if (mmc_card_sd(card))
 350                 card->quirks |= data;
 351 }
 352
 353 static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
 354                                                    int data)
 355 {
 356         if (mmc_card_sd(card))
 357                 card->quirks &= ~data;
 358 }
 359
 360 static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
 361 {
 362         return c->quirks & MMC_QUIRK_LENIENT_FN0;
 363 }
 364
 365 static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
 366 {
 367         return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 368 }
 369
 370 static inline int mmc_card_disable_cd(const struct mmc_card *c)
 371 {
 372         return c->quirks & MMC_QUIRK_DISABLE_CD;
 373 }
 374
 375 static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
 376 {
 377         return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
 378 }
 379
 380 #define mmc_card_name(c)        ((c)->cid.prod_name)
 381 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 382
 383 #define mmc_dev_to_card(d)      container_of(d, struct mmc_card, dev)
 384
 385 #define mmc_list_to_card(l)     container_of(l, struct mmc_card, node)
 386 #define mmc_get_drvdata(c)      dev_get_drvdata(&(c)->dev)
 387 #define mmc_set_drvdata(c,d)    dev_set_drvdata(&(c)->dev, d)
 388
 389 /*
 390  * MMC device driver (e.g., Flash card, I/O card...)
 391  */
 392 struct mmc_driver {
 393         struct device_driver drv;
 394         int (*probe)(struct mmc_card *);
 395         void (*remove)(struct mmc_card *);
 396         int (*suspend)(struct mmc_card *, pm_message_t);
 397         int (*resume)(struct mmc_card *);
 398 };
 399
 400 extern int mmc_register_driver(struct mmc_driver *);
 401 extern void mmc_unregister_driver(struct mmc_driver *);
 402
 403 extern void mmc_fixup_device(struct mmc_card *card,
 404                              const struct mmc_fixup *table);
 405
 406 #endif /* LINUX_MMC_CARD_H */