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