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         u8                      cache_ctrl;
  54         u8                      rst_n_function;
  55         unsigned int            part_time;              /* Units: ms */
  56         unsigned int            sa_timeout;             /* Units: 100ns */
  57         unsigned int            generic_cmd6_time;      /* Units: 10ms */
  58         unsigned int            power_off_longtime;     /* Units: ms */
  59         unsigned int            hs_max_dtr;
  60         unsigned int            sectors;
  61         unsigned int            card_type;
  62         unsigned int            hc_erase_size;          /* In sectors */
  63         unsigned int            hc_erase_timeout;       /* In milliseconds */
  64         unsigned int            sec_trim_mult;  /* Secure trim multiplier  */
  65         unsigned int            sec_erase_mult; /* Secure erase multiplier */
  66         unsigned int            trim_timeout;           /* In milliseconds */
  67         bool                    enhanced_area_en;       /* enable bit */
  68         unsigned long long      enhanced_area_offset;   /* Units: Byte */
  69         unsigned int            enhanced_area_size;     /* Units: KB */
  70         unsigned int            cache_size;             /* Units: KB */
  71         bool                    hpi_en;                 /* HPI enablebit */
  72         bool                    hpi;                    /* HPI support bit */
  73         unsigned int            hpi_cmd;                /* cmd used as HPI */
  74         unsigned int            boot_ro_lock;           /* ro lock support */
  75         bool                    boot_ro_lockable;
  76         u8                      raw_partition_support;  /* 160 */
  77         u8                      raw_erased_mem_count;   /* 181 */
  78         u8                      raw_ext_csd_structure;  /* 194 */
  79         u8                      raw_card_type;          /* 196 */
  80         u8                      out_of_int_time;        /* 198 */
  81         u8                      raw_s_a_timeout;                /* 217 */
  82         u8                      raw_hc_erase_gap_size;  /* 221 */
  83         u8                      raw_erase_timeout_mult; /* 223 */
  84         u8                      raw_hc_erase_grp_size;  /* 224 */
  85         u8                      raw_sec_trim_mult;      /* 229 */
  86         u8                      raw_sec_erase_mult;     /* 230 */
  87         u8                      raw_sec_feature_support;/* 231 */
  88         u8                      raw_trim_mult;          /* 232 */
  89         u8                      raw_sectors[4];         /* 212 - 4 bytes */
  90
  91         unsigned int            feature_support;
  92 #define MMC_DISCARD_FEATURE     BIT(0)                  /* CMD38 feature */
  93 };
  94
  95 struct sd_scr {
  96         unsigned char           sda_vsn;
  97         unsigned char           sda_spec3;
  98         unsigned char           bus_widths;
  99 #define SD_SCR_BUS_WIDTH_1      (1<<0)
 100 #define SD_SCR_BUS_WIDTH_4      (1<<2)
 101         unsigned char           cmds;
 102 #define SD_SCR_CMD20_SUPPORT   (1<<0)
 103 #define SD_SCR_CMD23_SUPPORT   (1<<1)
 104 };
 105
 106 struct sd_ssr {
 107         unsigned int            au;                     /* In sectors */
 108         unsigned int            erase_timeout;          /* In milliseconds */
 109         unsigned int            erase_offset;           /* In milliseconds */
 110 };
 111
 112 struct sd_switch_caps {
 113         unsigned int            hs_max_dtr;
 114         unsigned int            uhs_max_dtr;
 115 #define HIGH_SPEED_MAX_DTR      50000000
 116 #define UHS_SDR104_MAX_DTR      208000000
 117 #define UHS_SDR50_MAX_DTR       100000000
 118 #define UHS_DDR50_MAX_DTR       50000000
 119 #define UHS_SDR25_MAX_DTR       UHS_DDR50_MAX_DTR
 120 #define UHS_SDR12_MAX_DTR       25000000
 121         unsigned int            sd3_bus_mode;
 122 #define UHS_SDR12_BUS_SPEED     0
 123 #define HIGH_SPEED_BUS_SPEED    1
 124 #define UHS_SDR25_BUS_SPEED     1
 125 #define UHS_SDR50_BUS_SPEED     2
 126 #define UHS_SDR104_BUS_SPEED    3
 127 #define UHS_DDR50_BUS_SPEED     4
 128
 129 #define SD_MODE_HIGH_SPEED      (1 << HIGH_SPEED_BUS_SPEED)
 130 #define SD_MODE_UHS_SDR12       (1 << UHS_SDR12_BUS_SPEED)
 131 #define SD_MODE_UHS_SDR25       (1 << UHS_SDR25_BUS_SPEED)
 132 #define SD_MODE_UHS_SDR50       (1 << UHS_SDR50_BUS_SPEED)
 133 #define SD_MODE_UHS_SDR104      (1 << UHS_SDR104_BUS_SPEED)
 134 #define SD_MODE_UHS_DDR50       (1 << UHS_DDR50_BUS_SPEED)
 135         unsigned int            sd3_drv_type;
 136 #define SD_DRIVER_TYPE_B        0x01
 137 #define SD_DRIVER_TYPE_A        0x02
 138 #define SD_DRIVER_TYPE_C        0x04
 139 #define SD_DRIVER_TYPE_D        0x08
 140         unsigned int            sd3_curr_limit;
 141 #define SD_SET_CURRENT_LIMIT_200        0
 142 #define SD_SET_CURRENT_LIMIT_400        1
 143 #define SD_SET_CURRENT_LIMIT_600        2
 144 #define SD_SET_CURRENT_LIMIT_800        3
 145
 146 #define SD_MAX_CURRENT_200      (1 << SD_SET_CURRENT_LIMIT_200)
 147 #define SD_MAX_CURRENT_400      (1 << SD_SET_CURRENT_LIMIT_400)
 148 #define SD_MAX_CURRENT_600      (1 << SD_SET_CURRENT_LIMIT_600)
 149 #define SD_MAX_CURRENT_800      (1 << SD_SET_CURRENT_LIMIT_800)
 150 };
 151
 152 struct sdio_cccr {
 153         unsigned int            sdio_vsn;
 154         unsigned int            sd_vsn;
 155         unsigned int            multi_block:1,
 156                                 low_speed:1,
 157                                 wide_bus:1,
 158                                 high_power:1,
 159                                 high_speed:1,
 160                                 disable_cd:1;
 161 };
 162
 163 struct sdio_cis {
 164         unsigned short          vendor;
 165         unsigned short          device;
 166         unsigned short          blksize;
 167         unsigned int            max_dtr;
 168 };
 169
 170 struct mmc_host;
 171 struct sdio_func;
 172 struct sdio_func_tuple;
 173
 174 #define SDIO_MAX_FUNCS          7
 175
 176 /* The number of MMC physical partitions.  These consist of:
 177  * boot partitions (2), general purpose partitions (4) in MMC v4.4.
 178  */
 179 #define MMC_NUM_BOOT_PARTITION  2
 180 #define MMC_NUM_GP_PARTITION    4
 181 #define MMC_NUM_PHY_PARTITION   6
 182 #define MAX_MMC_PART_NAME_LEN   20
 183
 184 /*
 185  * MMC Physical partitions
 186  */
 187 struct mmc_part {
 188         unsigned int    size;   /* partition size (in bytes) */
 189         unsigned int    part_cfg;       /* partition type */
 190         char    name[MAX_MMC_PART_NAME_LEN];
 191         bool    force_ro;       /* to make boot parts RO by default */
 192         unsigned int    area_type;
 193 #define MMC_BLK_DATA_AREA_MAIN  (1<<0)
 194 #define MMC_BLK_DATA_AREA_BOOT  (1<<1)
 195 #define MMC_BLK_DATA_AREA_GP    (1<<2)
 196 };
 197
 198 /*
 199  * MMC device
 200  */
 201 struct mmc_card {
 202         struct mmc_host         *host;          /* the host this device belongs to */
 203         struct device           dev;            /* the device */
 204         unsigned int            rca;            /* relative card address of device */
 205         unsigned int            type;           /* card type */
 206 #define MMC_TYPE_MMC            0               /* MMC card */
 207 #define MMC_TYPE_SD             1               /* SD card */
 208 #define MMC_TYPE_SDIO           2               /* SDIO card */
 209 #define MMC_TYPE_SD_COMBO       3               /* SD combo (IO+mem) card */
 210         unsigned int            state;          /* (our) card state */
 211 #define MMC_STATE_PRESENT       (1<<0)          /* present in sysfs */
 212 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 213 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 214 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
 215 #define MMC_STATE_HIGHSPEED_DDR (1<<4)          /* card is in high speed mode */
 216 #define MMC_STATE_ULTRAHIGHSPEED (1<<5)         /* card is in ultra high speed mode */
 217 #define MMC_CARD_SDXC           (1<<6)          /* card is SDXC */
 218 #define MMC_CARD_REMOVED        (1<<7)          /* card has been removed */
 219 #define MMC_STATE_HIGHSPEED_200 (1<<8)          /* card is in HS200 mode */
 220         unsigned int            quirks;         /* card quirks */
 221 #define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 222 #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1)    /* use func->cur_blksize */
 223                                                 /* for byte mode */
 224 #define MMC_QUIRK_NONSTD_SDIO   (1<<2)          /* non-standard SDIO card attached */
 225                                                 /* (missing CIA registers) */
 226 #define MMC_QUIRK_BROKEN_CLK_GATING (1<<3)      /* clock gating the sdio bus will make card fail */
 227 #define MMC_QUIRK_NONSTD_FUNC_IF (1<<4)         /* SDIO card has nonstd function interfaces */
 228 #define MMC_QUIRK_DISABLE_CD    (1<<5)          /* disconnect CD/DAT[3] resistor */
 229 #define MMC_QUIRK_INAND_CMD38   (1<<6)          /* iNAND devices have broken CMD38 */
 230 #define MMC_QUIRK_BLK_NO_CMD23  (1<<7)          /* Avoid CMD23 for regular multiblock */
 231 #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8)   /* Avoid sending 512 bytes in */
 232 #define MMC_QUIRK_LONG_READ_TIME (1<<9)         /* Data read time > CSD says */
 233                                                 /* byte mode */
 234         unsigned int    poweroff_notify_state;  /* eMMC4.5 notify feature */
 235 #define MMC_NO_POWER_NOTIFICATION       0
 236 #define MMC_POWERED_ON                  1
 237 #define MMC_POWEROFF_SHORT              2
 238 #define MMC_POWEROFF_LONG               3
 239
 240         unsigned int            erase_size;     /* erase size in sectors */
 241         unsigned int            erase_shift;    /* if erase unit is power 2 */
 242         unsigned int            pref_erase;     /* in sectors */
 243         u8                      erased_byte;    /* value of erased bytes */
 244
 245         u32                     raw_cid[4];     /* raw card CID */
 246         u32                     raw_csd[4];     /* raw card CSD */
 247         u32                     raw_scr[2];     /* raw card SCR */
 248         struct mmc_cid          cid;            /* card identification */
 249         struct mmc_csd          csd;            /* card specific */
 250         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
 251         struct sd_scr           scr;            /* extra SD information */
 252         struct sd_ssr           ssr;            /* yet more SD information */
 253         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
 254
 255         unsigned int            sdio_funcs;     /* number of SDIO functions */
 256         struct sdio_cccr        cccr;           /* common card info */
 257         struct sdio_cis         cis;            /* common tuple info */
 258         struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 259         struct sdio_func        *sdio_single_irq; /* SDIO function when only one IRQ active */
 260         unsigned                num_info;       /* number of info strings */
 261         const char              **info;         /* info strings */
 262         struct sdio_func_tuple  *tuples;        /* unknown common tuples */
 263
 264         unsigned int            sd_bus_speed;   /* Bus Speed Mode set for the card */
 265
 266         struct dentry           *debugfs_root;
 267         struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
 268         unsigned int    nr_parts;
 269 };
 270
 271 /*
 272  * This function fill contents in mmc_part.
 273  */
 274 static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
 275                         unsigned int part_cfg, char *name, int idx, bool ro,
 276                         int area_type)
 277 {
 278         card->part[card->nr_parts].size = size;
 279         card->part[card->nr_parts].part_cfg = part_cfg;
 280         sprintf(card->part[card->nr_parts].name, name, idx);
 281         card->part[card->nr_parts].force_ro = ro;
 282         card->part[card->nr_parts].area_type = area_type;
 283         card->nr_parts++;
 284 }
 285
 286 /*
 287  *  The world is not perfect and supplies us with broken mmc/sdio devices.
 288  *  For at least some of these bugs we need a work-around.
 289  */
 290
 291 struct mmc_fixup {
 292         /* CID-specific fields. */
 293         const char *name;
 294
 295         /* Valid revision range */
 296         u64 rev_start, rev_end;
 297
 298         unsigned int manfid;
 299         unsigned short oemid;
 300
 301         /* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
 302         u16 cis_vendor, cis_device;
 303
 304         void (*vendor_fixup)(struct mmc_card *card, int data);
 305         int data;
 306 };
 307
 308 #define CID_MANFID_ANY (-1u)
 309 #define CID_OEMID_ANY ((unsigned short) -1)
 310 #define CID_NAME_ANY (NULL)
 311
 312 #define END_FIXUP { 0 }
 313
 314 #define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end,        \
 315                    _cis_vendor, _cis_device,                            \
 316                    _fixup, _data)                                       \
 317         {                                                  \
 318                 .name = (_name),                           \
 319                 .manfid = (_manfid),                       \
 320                 .oemid = (_oemid),                         \
 321                 .rev_start = (_rev_start),                 \
 322                 .rev_end = (_rev_end),                     \
 323                 .cis_vendor = (_cis_vendor),               \
 324                 .cis_device = (_cis_device),               \
 325                 .vendor_fixup = (_fixup),                  \
 326                 .data = (_data),                           \
 327          }
 328
 329 #define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end,     \
 330                       _fixup, _data)                                    \
 331         _FIXUP_EXT(_name, _manfid,                                      \
 332                    _oemid, _rev_start, _rev_end,                        \
 333                    SDIO_ANY_ID, SDIO_ANY_ID,                            \
 334                    _fixup, _data)                                       \
 335
 336 #define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
 337         MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
 338
 339 #define SDIO_FIXUP(_vendor, _device, _fixup, _data)                     \
 340         _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY,                        \
 341                     CID_OEMID_ANY, 0, -1ull,                            \
 342                    _vendor, _device,                                    \
 343                    _fixup, _data)                                       \
 344
 345 #define cid_rev(hwrev, fwrev, year, month)      \
 346         (((u64) hwrev) << 40 |                  \
 347          ((u64) fwrev) << 32 |                  \
 348          ((u64) year) << 16 |                   \
 349          ((u64) month))
 350
 351 #define cid_rev_card(card)                \
 352         cid_rev(card->cid.hwrev,          \
 353                     card->cid.fwrev,      \
 354                     card->cid.year,       \
 355                     card->cid.month)
 356
 357 /*
 358  * Unconditionally quirk add/remove.
 359  */
 360
 361 static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
 362 {
 363         card->quirks |= data;
 364 }
 365
 366 static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
 367 {
 368         card->quirks &= ~data;
 369 }
 370
 371 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
 372 #define mmc_card_sd(c)          ((c)->type == MMC_TYPE_SD)
 373 #define mmc_card_sdio(c)        ((c)->type == MMC_TYPE_SDIO)
 374
 375 #define mmc_card_present(c)     ((c)->state & MMC_STATE_PRESENT)
 376 #define mmc_card_readonly(c)    ((c)->state & MMC_STATE_READONLY)
 377 #define mmc_card_highspeed(c)   ((c)->state & MMC_STATE_HIGHSPEED)
 378 #define mmc_card_hs200(c)       ((c)->state & MMC_STATE_HIGHSPEED_200)
 379 #define mmc_card_blockaddr(c)   ((c)->state & MMC_STATE_BLOCKADDR)
 380 #define mmc_card_ddr_mode(c)    ((c)->state & MMC_STATE_HIGHSPEED_DDR)
 381 #define mmc_card_uhs(c)         ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
 382 #define mmc_sd_card_uhs(c)      ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
 383 #define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
 384 #define mmc_card_removed(c)     ((c) && ((c)->state & MMC_CARD_REMOVED))
 385
 386 #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
 387 #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
 388 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 389 #define mmc_card_set_hs200(c)   ((c)->state |= MMC_STATE_HIGHSPEED_200)
 390 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 391 #define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
 392 #define mmc_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 393 #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 394 #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
 395 #define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
 396
 397 /*
 398  * Quirk add/remove for MMC products.
 399  */
 400
 401 static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
 402 {
 403         if (mmc_card_mmc(card))
 404                 card->quirks |= data;
 405 }
 406
 407 static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
 408                                                    int data)
 409 {
 410         if (mmc_card_mmc(card))
 411                 card->quirks &= ~data;
 412 }
 413
 414 /*
 415  * Quirk add/remove for SD products.
 416  */
 417
 418 static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
 419 {
 420         if (mmc_card_sd(card))
 421                 card->quirks |= data;
 422 }
 423
 424 static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
 425                                                    int data)
 426 {
 427         if (mmc_card_sd(card))
 428                 card->quirks &= ~data;
 429 }
 430
 431 static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
 432 {
 433         return c->quirks & MMC_QUIRK_LENIENT_FN0;
 434 }
 435
 436 static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
 437 {
 438         return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 439 }
 440
 441 static inline int mmc_card_disable_cd(const struct mmc_card *c)
 442 {
 443         return c->quirks & MMC_QUIRK_DISABLE_CD;
 444 }
 445
 446 static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
 447 {
 448         return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
 449 }
 450
 451 static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
 452 {
 453         return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
 454 }
 455
 456 static inline int mmc_card_long_read_time(const struct mmc_card *c)
 457 {
 458         return c->quirks & MMC_QUIRK_LONG_READ_TIME;
 459 }
 460
 461 #define mmc_card_name(c)        ((c)->cid.prod_name)
 462 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 463
 464 #define mmc_dev_to_card(d)      container_of(d, struct mmc_card, dev)
 465
 466 #define mmc_list_to_card(l)     container_of(l, struct mmc_card, node)
 467 #define mmc_get_drvdata(c)      dev_get_drvdata(&(c)->dev)
 468 #define mmc_set_drvdata(c,d)    dev_set_drvdata(&(c)->dev, d)
 469
 470 /*
 471  * MMC device driver (e.g., Flash card, I/O card...)
 472  */
 473 struct mmc_driver {
 474         struct device_driver drv;
 475         int (*probe)(struct mmc_card *);
 476         void (*remove)(struct mmc_card *);
 477         int (*suspend)(struct mmc_card *, pm_message_t);
 478         int (*resume)(struct mmc_card *);
 479 };
 480
 481 extern int mmc_register_driver(struct mmc_driver *);
 482 extern void mmc_unregister_driver(struct mmc_driver *);
 483
 484 extern void mmc_fixup_device(struct mmc_card *card,
 485                              const struct mmc_fixup *table);
 486
 487 #endif /* LINUX_MMC_CARD_H */