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 #include <linux/genhd.h>
  16
  17 struct mmc_cid {
  18         unsigned int            manfid;
  19         char                    prod_name[8];
  20         unsigned int            serial;
  21         unsigned short          oemid;
  22         unsigned short          year;
  23         unsigned char           hwrev;
  24         unsigned char           fwrev;
  25         unsigned char           month;
  26 };
  27
  28 struct mmc_csd {
  29         unsigned char           structure;
  30         unsigned char           mmca_vsn;
  31         unsigned short          cmdclass;
  32         unsigned short          tacc_clks;
  33         unsigned int            tacc_ns;
  34         unsigned int            c_size;
  35         unsigned int            r2w_factor;
  36         unsigned int            max_dtr;
  37         unsigned int            erase_size;             /* In sectors */
  38         unsigned int            read_blkbits;
  39         unsigned int            write_blkbits;
  40         unsigned int            capacity;
  41         unsigned int            read_partial:1,
  42                                 read_misalign:1,
  43                                 write_partial:1,
  44                                 write_misalign:1;
  45 };
  46
  47 struct mmc_ext_csd {
  48         u8                      rev;
  49         u8                      erase_group_def;
  50         u8                      sec_feature_support;
  51         u8                      rel_sectors;
  52         u8                      rel_param;
  53         u8                      part_config;
  54         u8                      cache_ctrl;
  55         u8                      rst_n_function;
  56         unsigned int            part_time;              /* Units: ms */
  57         unsigned int            sa_timeout;             /* Units: 100ns */
  58         unsigned int            generic_cmd6_time;      /* Units: 10ms */
  59         unsigned int            power_off_longtime;     /* Units: ms */
  60         unsigned int            hs_max_dtr;
  61         unsigned int            sectors;
  62         unsigned int            card_type;
  63         unsigned int            hc_erase_size;          /* In sectors */
  64         unsigned int            hc_erase_timeout;       /* In milliseconds */
  65         unsigned int            sec_trim_mult;  /* Secure trim multiplier  */
  66         unsigned int            sec_erase_mult; /* Secure erase multiplier */
  67         unsigned int            trim_timeout;           /* In milliseconds */
  68         bool                    enhanced_area_en;       /* enable bit */
  69         unsigned long long      enhanced_area_offset;   /* Units: Byte */
  70         unsigned int            enhanced_area_size;     /* Units: KB */
  71         unsigned int            cache_size;             /* Units: KB */
  72         u8                      raw_partition_support;  /* 160 */
  73         u8                      raw_erased_mem_count;   /* 181 */
  74         u8                      raw_ext_csd_structure;  /* 194 */
  75         u8                      raw_card_type;          /* 196 */
  76         u8                      raw_s_a_timeout;                /* 217 */
  77         u8                      raw_hc_erase_gap_size;  /* 221 */
  78         u8                      raw_erase_timeout_mult; /* 223 */
  79         u8                      raw_hc_erase_grp_size;  /* 224 */
  80         u8                      raw_sec_trim_mult;      /* 229 */
  81         u8                      raw_sec_erase_mult;     /* 230 */
  82         u8                      raw_sec_feature_support;/* 231 */
  83         u8                      raw_trim_mult;          /* 232 */
  84         u8                      raw_sectors[4];         /* 212 - 4 bytes */
  85
  86         unsigned int            feature_support;
  87 #define MMC_DISCARD_FEATURE     BIT(0)                  /* CMD38 feature */
  88 };
  89
  90 struct sd_scr {
  91         unsigned char           sda_vsn;
  92         unsigned char           sda_spec3;
  93         unsigned char           bus_widths;
  94 #define SD_SCR_BUS_WIDTH_1      (1<<0)
  95 #define SD_SCR_BUS_WIDTH_4      (1<<2)
  96         unsigned char           cmds;
  97 #define SD_SCR_CMD20_SUPPORT   (1<<0)
  98 #define SD_SCR_CMD23_SUPPORT   (1<<1)
  99 };
 100
 101 struct sd_ssr {
 102         unsigned int            au;                     /* In sectors */
 103         unsigned int            erase_timeout;          /* In milliseconds */
 104         unsigned int            erase_offset;           /* In milliseconds */
 105 };
 106
 107 struct sd_switch_caps {
 108         unsigned int            hs_max_dtr;
 109         unsigned int            uhs_max_dtr;
 110 #define UHS_SDR104_MAX_DTR      208000000
 111 #define UHS_SDR50_MAX_DTR       100000000
 112 #define UHS_DDR50_MAX_DTR       50000000
 113 #define UHS_SDR25_MAX_DTR       UHS_DDR50_MAX_DTR
 114 #define UHS_SDR12_MAX_DTR       25000000
 115         unsigned int            sd3_bus_mode;
 116 #define UHS_SDR12_BUS_SPEED     0
 117 #define UHS_SDR25_BUS_SPEED     1
 118 #define UHS_SDR50_BUS_SPEED     2
 119 #define UHS_SDR104_BUS_SPEED    3
 120 #define UHS_DDR50_BUS_SPEED     4
 121
 122 #define SD_MODE_UHS_SDR12       (1 << UHS_SDR12_BUS_SPEED)
 123 #define SD_MODE_UHS_SDR25       (1 << UHS_SDR25_BUS_SPEED)
 124 #define SD_MODE_UHS_SDR50       (1 << UHS_SDR50_BUS_SPEED)
 125 #define SD_MODE_UHS_SDR104      (1 << UHS_SDR104_BUS_SPEED)
 126 #define SD_MODE_UHS_DDR50       (1 << UHS_DDR50_BUS_SPEED)
 127         unsigned int            sd3_drv_type;
 128 #define SD_DRIVER_TYPE_B        0x01
 129 #define SD_DRIVER_TYPE_A        0x02
 130 #define SD_DRIVER_TYPE_C        0x04
 131 #define SD_DRIVER_TYPE_D        0x08
 132         unsigned int            sd3_curr_limit;
 133 #define SD_SET_CURRENT_LIMIT_200        0
 134 #define SD_SET_CURRENT_LIMIT_400        1
 135 #define SD_SET_CURRENT_LIMIT_600        2
 136 #define SD_SET_CURRENT_LIMIT_800        3
 137
 138 #define SD_MAX_CURRENT_200      (1 << SD_SET_CURRENT_LIMIT_200)
 139 #define SD_MAX_CURRENT_400      (1 << SD_SET_CURRENT_LIMIT_400)
 140 #define SD_MAX_CURRENT_600      (1 << SD_SET_CURRENT_LIMIT_600)
 141 #define SD_MAX_CURRENT_800      (1 << SD_SET_CURRENT_LIMIT_800)
 142 };
 143
 144 struct sdio_cccr {
 145         unsigned int            sdio_vsn;
 146         unsigned int            sd_vsn;
 147         unsigned int            multi_block:1,
 148                                 low_speed:1,
 149                                 wide_bus:1,
 150                                 high_power:1,
 151                                 high_speed:1,
 152                                 disable_cd:1;
 153 };
 154
 155 struct sdio_cis {
 156         unsigned short          vendor;
 157         unsigned short          device;
 158         unsigned short          blksize;
 159         unsigned int            max_dtr;
 160 };
 161
 162 struct mmc_host;
 163 struct sdio_func;
 164 struct sdio_func_tuple;
 165
 166 #define SDIO_MAX_FUNCS          7
 167
 168 /* The number of MMC physical partitions.  These consist of:
 169  * boot partitions (2), general purpose partitions (4) in MMC v4.4.
 170  */
 171 #define MMC_NUM_BOOT_PARTITION  2
 172 #define MMC_NUM_GP_PARTITION    4
 173 #define MMC_NUM_PHY_PARTITION   6
 174
 175 /*
 176  * MMC Physical partitions
 177  */
 178 struct mmc_part {
 179         unsigned int    size;   /* partition size (in bytes) */
 180         unsigned int    part_cfg;       /* partition type */
 181         char    name[DISK_NAME_LEN];
 182         bool    force_ro;       /* to make boot parts RO by default */
 183 };
 184
 185 /*
 186  * MMC device
 187  */
 188 struct mmc_card {
 189         struct mmc_host         *host;          /* the host this device belongs to */
 190         struct device           dev;            /* the device */
 191         unsigned int            rca;            /* relative card address of device */
 192         unsigned int            type;           /* card type */
 193 #define MMC_TYPE_MMC            0               /* MMC card */
 194 #define MMC_TYPE_SD             1               /* SD card */
 195 #define MMC_TYPE_SDIO           2               /* SDIO card */
 196 #define MMC_TYPE_SD_COMBO       3               /* SD combo (IO+mem) card */
 197         unsigned int            state;          /* (our) card state */
 198 #define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
 199 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 200 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 201 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
 202 #define MMC_STATE_HIGHSPEED_DDR (1<<4)          /* card is in high speed mode */
 203 #define MMC_STATE_ULTRAHIGHSPEED (1<<5)         /* card is in ultra high speed mode */
 204 #define MMC_CARD_SDXC           (1<<6)          /* card is SDXC */
 205         unsigned int            quirks;         /* card quirks */
 206 #define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 207 #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1)    /* use func->cur_blksize */
 208                                                 /* for byte mode */
 209 #define MMC_QUIRK_NONSTD_SDIO   (1<<2)          /* non-standard SDIO card attached */
 210                                                 /* (missing CIA registers) */
 211 #define MMC_QUIRK_BROKEN_CLK_GATING (1<<3)      /* clock gating the sdio bus will make card fail */
 212 #define MMC_QUIRK_NONSTD_FUNC_IF (1<<4)         /* SDIO card has nonstd function interfaces */
 213 #define MMC_QUIRK_DISABLE_CD    (1<<5)          /* disconnect CD/DAT[3] resistor */
 214 #define MMC_QUIRK_INAND_CMD38   (1<<6)          /* iNAND devices have broken CMD38 */
 215 #define MMC_QUIRK_BLK_NO_CMD23  (1<<7)          /* Avoid CMD23 for regular multiblock */
 216 #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8)   /* Avoid sending 512 bytes in */
 217                                                 /* byte mode */
 218         unsigned int    poweroff_notify_state;  /* eMMC4.5 notify feature */
 219 #define MMC_NO_POWER_NOTIFICATION       0
 220 #define MMC_POWERED_ON                  1
 221 #define MMC_POWEROFF_SHORT              2
 222 #define MMC_POWEROFF_LONG               3
 223
 224         unsigned int            erase_size;     /* erase size in sectors */
 225         unsigned int            erase_shift;    /* if erase unit is power 2 */
 226         unsigned int            pref_erase;     /* in sectors */
 227         u8                      erased_byte;    /* value of erased bytes */
 228
 229         u32                     raw_cid[4];     /* raw card CID */
 230         u32                     raw_csd[4];     /* raw card CSD */
 231         u32                     raw_scr[2];     /* raw card SCR */
 232         struct mmc_cid          cid;            /* card identification */
 233         struct mmc_csd          csd;            /* card specific */
 234         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
 235         struct sd_scr           scr;            /* extra SD information */
 236         struct sd_ssr           ssr;            /* yet more SD information */
 237         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
 238
 239         unsigned int            sdio_funcs;     /* number of SDIO functions */
 240         struct sdio_cccr        cccr;           /* common card info */
 241         struct sdio_cis         cis;            /* common tuple info */
 242         struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 243         struct sdio_func        *sdio_single_irq; /* SDIO function when only one IRQ active */
 244         unsigned                num_info;       /* number of info strings */
 245         const char              **info;         /* info strings */
 246         struct sdio_func_tuple  *tuples;        /* unknown common tuples */
 247
 248         unsigned int            sd_bus_speed;   /* Bus Speed Mode set for the card */
 249
 250         struct dentry           *debugfs_root;
 251         struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
 252         unsigned int    nr_parts;
 253 };
 254
 255 /*
 256  * This function fill contents in mmc_part.
 257  */
 258 static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
 259                         unsigned int part_cfg, char *name, int idx, bool ro)
 260 {
 261         card->part[card->nr_parts].size = size;
 262         card->part[card->nr_parts].part_cfg = part_cfg;
 263         sprintf(card->part[card->nr_parts].name, name, idx);
 264         card->part[card->nr_parts].force_ro = ro;
 265         card->nr_parts++;
 266 }
 267
 268 /*
 269  *  The world is not perfect and supplies us with broken mmc/sdio devices.
 270  *  For at least some of these bugs we need a work-around.
 271  */
 272
 273 struct mmc_fixup {
 274         /* CID-specific fields. */
 275         const char *name;
 276
 277         /* Valid revision range */
 278         u64 rev_start, rev_end;
 279
 280         unsigned int manfid;
 281         unsigned short oemid;
 282
 283         /* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
 284         u16 cis_vendor, cis_device;
 285
 286         void (*vendor_fixup)(struct mmc_card *card, int data);
 287         int data;
 288 };
 289
 290 #define CID_MANFID_ANY (-1u)
 291 #define CID_OEMID_ANY ((unsigned short) -1)
 292 #define CID_NAME_ANY (NULL)
 293
 294 #define END_FIXUP { 0 }
 295
 296 #define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end,        \
 297                    _cis_vendor, _cis_device,                            \
 298                    _fixup, _data)                                       \
 299         {                                                  \
 300                 .name = (_name),                           \
 301                 .manfid = (_manfid),                       \
 302                 .oemid = (_oemid),                         \
 303                 .rev_start = (_rev_start),                 \
 304                 .rev_end = (_rev_end),                     \
 305                 .cis_vendor = (_cis_vendor),               \
 306                 .cis_device = (_cis_device),               \
 307                 .vendor_fixup = (_fixup),                  \
 308                 .data = (_data),                           \
 309          }
 310
 311 #define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end,     \
 312                       _fixup, _data)                                    \
 313         _FIXUP_EXT(_name, _manfid,                                      \
 314                    _oemid, _rev_start, _rev_end,                        \
 315                    SDIO_ANY_ID, SDIO_ANY_ID,                            \
 316                    _fixup, _data)                                       \
 317
 318 #define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
 319         MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
 320
 321 #define SDIO_FIXUP(_vendor, _device, _fixup, _data)                     \
 322         _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY,                        \
 323                     CID_OEMID_ANY, 0, -1ull,                            \
 324                    _vendor, _device,                                    \
 325                    _fixup, _data)                                       \
 326
 327 #define cid_rev(hwrev, fwrev, year, month)      \
 328         (((u64) hwrev) << 40 |                  \
 329          ((u64) fwrev) << 32 |                  \
 330          ((u64) year) << 16 |                   \
 331          ((u64) month))
 332
 333 #define cid_rev_card(card)                \
 334         cid_rev(card->cid.hwrev,          \
 335                     card->cid.fwrev,      \
 336                     card->cid.year,       \
 337                     card->cid.month)
 338
 339 /*
 340  * Unconditionally quirk add/remove.
 341  */
 342
 343 static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
 344 {
 345         card->quirks |= data;
 346 }
 347
 348 static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
 349 {
 350         card->quirks &= ~data;
 351 }
 352
 353 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
 354 #define mmc_card_sd(c)          ((c)->type == MMC_TYPE_SD)
 355 #define mmc_card_sdio(c)        ((c)->type == MMC_TYPE_SDIO)
 356
 357 #define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
 358 #define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
 359 #define mmc_card_highspeed(c)   ((c)->state & MMC_STATE_HIGHSPEED)
 360 #define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
 361 #define mmc_card_ddr_mode(c)    ((c)->state & MMC_STATE_HIGHSPEED_DDR)
 362 #define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
 363 #define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
 364
 365 #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
 366 #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
 367 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 368 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 369 #define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
 370 #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 371 #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
 372
 373 /*
 374  * Quirk add/remove for MMC products.
 375  */
 376
 377 static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
 378 {
 379         if (mmc_card_mmc(card))
 380                 card->quirks |= data;
 381 }
 382
 383 static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
 384                                                    int data)
 385 {
 386         if (mmc_card_mmc(card))
 387                 card->quirks &= ~data;
 388 }
 389
 390 /*
 391  * Quirk add/remove for SD products.
 392  */
 393
 394 static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
 395 {
 396         if (mmc_card_sd(card))
 397                 card->quirks |= data;
 398 }
 399
 400 static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
 401                                                    int data)
 402 {
 403         if (mmc_card_sd(card))
 404                 card->quirks &= ~data;
 405 }
 406
 407 static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
 408 {
 409         return c->quirks & MMC_QUIRK_LENIENT_FN0;
 410 }
 411
 412 static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
 413 {
 414         return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 415 }
 416
 417 static inline int mmc_card_disable_cd(const struct mmc_card *c)
 418 {
 419         return c->quirks & MMC_QUIRK_DISABLE_CD;
 420 }
 421
 422 static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
 423 {
 424         return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
 425 }
 426
 427 static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
 428 {
 429         return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
 430 }
 431
 432 #define mmc_card_name(c)        ((c)->cid.prod_name)
 433 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 434
 435 #define mmc_dev_to_card(d)      container_of(d, struct mmc_card, dev)
 436
 437 #define mmc_list_to_card(l)     container_of(l, struct mmc_card, node)
 438 #define mmc_get_drvdata(c)      dev_get_drvdata(&(c)->dev)
 439 #define mmc_set_drvdata(c,d)    dev_set_drvdata(&(c)->dev, d)
 440
 441 /*
 442  * MMC device driver (e.g., Flash card, I/O card...)
 443  */
 444 struct mmc_driver {
 445         struct device_driver drv;
 446         int (*probe)(struct mmc_card *);
 447         void (*remove)(struct mmc_card *);
 448         int (*suspend)(struct mmc_card *, pm_message_t);
 449         int (*resume)(struct mmc_card *);
 450 };
 451
 452 extern int mmc_register_driver(struct mmc_driver *);
 453 extern void mmc_unregister_driver(struct mmc_driver *);
 454
 455 extern void mmc_fixup_device(struct mmc_card *card,
 456                              const struct mmc_fixup *table);
 457
 458 #endif /* LINUX_MMC_CARD_H */