tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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/device.h>
14#include <linux/mmc/core.h>
15#include <linux/mod_devicetable.h>
16
17struct mmc_cid {
18 unsigned int manfid;
19 char prod_name[8];
20 unsigned char prv;
21 unsigned int serial;
22 unsigned short oemid;
23 unsigned short year;
24 unsigned char hwrev;
25 unsigned char fwrev;
26 unsigned char month;
27};
28
29struct mmc_csd {
30 unsigned char structure;
31 unsigned char mmca_vsn;
32 unsigned short cmdclass;
33 unsigned short tacc_clks;
34 unsigned int tacc_ns;
35 unsigned int c_size;
36 unsigned int r2w_factor;
37 unsigned int max_dtr;
38 unsigned int erase_size; /* In sectors */
39 unsigned int read_blkbits;
40 unsigned int write_blkbits;
41 unsigned int capacity;
42 unsigned int read_partial:1,
43 read_misalign:1,
44 write_partial:1,
45 write_misalign:1;
46};
47
48struct mmc_ext_csd {
49 u8 rev;
50 u8 erase_group_def;
51 u8 sec_feature_support;
52 u8 rel_sectors;
53 u8 rel_param;
54 u8 part_config;
55 u8 cache_ctrl;
56 u8 rst_n_function;
57 u8 max_packed_writes;
58 u8 max_packed_reads;
59 u8 packed_event_en;
60 unsigned int part_time; /* Units: ms */
61 unsigned int sa_timeout; /* Units: 100ns */
62 unsigned int generic_cmd6_time; /* Units: 10ms */
63 unsigned int power_off_longtime; /* Units: ms */
64 u8 power_off_notification; /* state */
65 unsigned int hs_max_dtr;
66 unsigned int hs200_max_dtr;
67#define MMC_HIGH_26_MAX_DTR 26000000
68#define MMC_HIGH_52_MAX_DTR 52000000
69#define MMC_HIGH_DDR_MAX_DTR 52000000
70#define MMC_HS200_MAX_DTR 200000000
71 unsigned int sectors;
72 unsigned int hc_erase_size; /* In sectors */
73 unsigned int hc_erase_timeout; /* In milliseconds */
74 unsigned int sec_trim_mult; /* Secure trim multiplier */
75 unsigned int sec_erase_mult; /* Secure erase multiplier */
76 unsigned int trim_timeout; /* In milliseconds */
77 bool enhanced_area_en; /* enable bit */
78 unsigned long long enhanced_area_offset; /* Units: Byte */
79 unsigned int enhanced_area_size; /* Units: KB */
80 unsigned int cache_size; /* Units: KB */
81 bool hpi_en; /* HPI enablebit */
82 bool hpi; /* HPI support bit */
83 unsigned int hpi_cmd; /* cmd used as HPI */
84 bool bkops; /* background support bit */
85 bool bkops_en; /* background enable bit */
86 unsigned int data_sector_size; /* 512 bytes or 4KB */
87 unsigned int data_tag_unit_size; /* DATA TAG UNIT size */
88 unsigned int boot_ro_lock; /* ro lock support */
89 bool boot_ro_lockable;
90 u8 raw_exception_status; /* 54 */
91 u8 raw_partition_support; /* 160 */
92 u8 raw_rpmb_size_mult; /* 168 */
93 u8 raw_erased_mem_count; /* 181 */
94 u8 raw_ext_csd_structure; /* 194 */
95 u8 raw_card_type; /* 196 */
96 u8 out_of_int_time; /* 198 */
97 u8 raw_pwr_cl_52_195; /* 200 */
98 u8 raw_pwr_cl_26_195; /* 201 */
99 u8 raw_pwr_cl_52_360; /* 202 */
100 u8 raw_pwr_cl_26_360; /* 203 */
101 u8 raw_s_a_timeout; /* 217 */
102 u8 raw_hc_erase_gap_size; /* 221 */
103 u8 raw_erase_timeout_mult; /* 223 */
104 u8 raw_hc_erase_grp_size; /* 224 */
105 u8 raw_sec_trim_mult; /* 229 */
106 u8 raw_sec_erase_mult; /* 230 */
107 u8 raw_sec_feature_support;/* 231 */
108 u8 raw_trim_mult; /* 232 */
109 u8 raw_pwr_cl_200_195; /* 236 */
110 u8 raw_pwr_cl_200_360; /* 237 */
111 u8 raw_pwr_cl_ddr_52_195; /* 238 */
112 u8 raw_pwr_cl_ddr_52_360; /* 239 */
113 u8 raw_pwr_cl_ddr_200_360; /* 253 */
114 u8 raw_bkops_status; /* 246 */
115 u8 raw_sectors[4]; /* 212 - 4 bytes */
116
117 unsigned int feature_support;
118#define MMC_DISCARD_FEATURE BIT(0) /* CMD38 feature */
119};
120
121struct sd_scr {
122 unsigned char sda_vsn;
123 unsigned char sda_spec3;
124 unsigned char bus_widths;
125#define SD_SCR_BUS_WIDTH_1 (1<<0)
126#define SD_SCR_BUS_WIDTH_4 (1<<2)
127 unsigned char cmds;
128#define SD_SCR_CMD20_SUPPORT (1<<0)
129#define SD_SCR_CMD23_SUPPORT (1<<1)
130};
131
132struct sd_ssr {
133 unsigned int au; /* In sectors */
134 unsigned int erase_timeout; /* In milliseconds */
135 unsigned int erase_offset; /* In milliseconds */
136};
137
138struct sd_switch_caps {
139 unsigned int hs_max_dtr;
140 unsigned int uhs_max_dtr;
141#define HIGH_SPEED_MAX_DTR 50000000
142#define UHS_SDR104_MAX_DTR 208000000
143#define UHS_SDR50_MAX_DTR 100000000
144#define UHS_DDR50_MAX_DTR 50000000
145#define UHS_SDR25_MAX_DTR UHS_DDR50_MAX_DTR
146#define UHS_SDR12_MAX_DTR 25000000
147 unsigned int sd3_bus_mode;
148#define UHS_SDR12_BUS_SPEED 0
149#define HIGH_SPEED_BUS_SPEED 1
150#define UHS_SDR25_BUS_SPEED 1
151#define UHS_SDR50_BUS_SPEED 2
152#define UHS_SDR104_BUS_SPEED 3
153#define UHS_DDR50_BUS_SPEED 4
154
155#define SD_MODE_HIGH_SPEED (1 << HIGH_SPEED_BUS_SPEED)
156#define SD_MODE_UHS_SDR12 (1 << UHS_SDR12_BUS_SPEED)
157#define SD_MODE_UHS_SDR25 (1 << UHS_SDR25_BUS_SPEED)
158#define SD_MODE_UHS_SDR50 (1 << UHS_SDR50_BUS_SPEED)
159#define SD_MODE_UHS_SDR104 (1 << UHS_SDR104_BUS_SPEED)
160#define SD_MODE_UHS_DDR50 (1 << UHS_DDR50_BUS_SPEED)
161 unsigned int sd3_drv_type;
162#define SD_DRIVER_TYPE_B 0x01
163#define SD_DRIVER_TYPE_A 0x02
164#define SD_DRIVER_TYPE_C 0x04
165#define SD_DRIVER_TYPE_D 0x08
166 unsigned int sd3_curr_limit;
167#define SD_SET_CURRENT_LIMIT_200 0
168#define SD_SET_CURRENT_LIMIT_400 1
169#define SD_SET_CURRENT_LIMIT_600 2
170#define SD_SET_CURRENT_LIMIT_800 3
171#define SD_SET_CURRENT_NO_CHANGE (-1)
172
173#define SD_MAX_CURRENT_200 (1 << SD_SET_CURRENT_LIMIT_200)
174#define SD_MAX_CURRENT_400 (1 << SD_SET_CURRENT_LIMIT_400)
175#define SD_MAX_CURRENT_600 (1 << SD_SET_CURRENT_LIMIT_600)
176#define SD_MAX_CURRENT_800 (1 << SD_SET_CURRENT_LIMIT_800)
177};
178
179struct sdio_cccr {
180 unsigned int sdio_vsn;
181 unsigned int sd_vsn;
182 unsigned int multi_block:1,
183 low_speed:1,
184 wide_bus:1,
185 high_power:1,
186 high_speed:1,
187 disable_cd:1;
188};
189
190struct sdio_cis {
191 unsigned short vendor;
192 unsigned short device;
193 unsigned short blksize;
194 unsigned int max_dtr;
195};
196
197struct mmc_host;
198struct mmc_ios;
199struct sdio_func;
200struct sdio_func_tuple;
201
202#define SDIO_MAX_FUNCS 7
203
204enum mmc_blk_status {
205 MMC_BLK_SUCCESS = 0,
206 MMC_BLK_PARTIAL,
207 MMC_BLK_CMD_ERR,
208 MMC_BLK_RETRY,
209 MMC_BLK_ABORT,
210 MMC_BLK_DATA_ERR,
211 MMC_BLK_ECC_ERR,
212 MMC_BLK_NOMEDIUM,
213 MMC_BLK_NEW_REQUEST,
214};
215
216/* The number of MMC physical partitions. These consist of:
217 * boot partitions (2), general purpose partitions (4) in MMC v4.4.
218 */
219#define MMC_NUM_BOOT_PARTITION 2
220#define MMC_NUM_GP_PARTITION 4
221#define MMC_NUM_PHY_PARTITION 6
222#define MAX_MMC_PART_NAME_LEN 20
223
224/*
225 * MMC Physical partitions
226 */
227struct mmc_part {
228 unsigned int size; /* partition size (in bytes) */
229 unsigned int part_cfg; /* partition type */
230 char name[MAX_MMC_PART_NAME_LEN];
231 bool force_ro; /* to make boot parts RO by default */
232 unsigned int area_type;
233#define MMC_BLK_DATA_AREA_MAIN (1<<0)
234#define MMC_BLK_DATA_AREA_BOOT (1<<1)
235#define MMC_BLK_DATA_AREA_GP (1<<2)
236#define MMC_BLK_DATA_AREA_RPMB (1<<3)
237};
238
239/*
240 * MMC device
241 */
242struct mmc_card {
243 struct mmc_host *host; /* the host this device belongs to */
244 struct device dev; /* the device */
245 u32 ocr; /* the current OCR setting */
246 unsigned int rca; /* relative card address of device */
247 unsigned int type; /* card type */
248#define MMC_TYPE_MMC 0 /* MMC card */
249#define MMC_TYPE_SD 1 /* SD card */
250#define MMC_TYPE_SDIO 2 /* SDIO card */
251#define MMC_TYPE_SD_COMBO 3 /* SD combo (IO+mem) card */
252 unsigned int state; /* (our) card state */
253#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
254#define MMC_STATE_READONLY (1<<1) /* card is read-only */
255#define MMC_STATE_BLOCKADDR (1<<2) /* card uses block-addressing */
256#define MMC_CARD_SDXC (1<<3) /* card is SDXC */
257#define MMC_CARD_REMOVED (1<<4) /* card has been removed */
258#define MMC_STATE_DOING_BKOPS (1<<5) /* card is doing BKOPS */
259#define MMC_STATE_SUSPENDED (1<<6) /* card is suspended */
260 unsigned int quirks; /* card quirks */
261#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
262#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */
263 /* for byte mode */
264#define MMC_QUIRK_NONSTD_SDIO (1<<2) /* non-standard SDIO card attached */
265 /* (missing CIA registers) */
266#define MMC_QUIRK_BROKEN_CLK_GATING (1<<3) /* clock gating the sdio bus will make card fail */
267#define MMC_QUIRK_NONSTD_FUNC_IF (1<<4) /* SDIO card has nonstd function interfaces */
268#define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */
269#define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */
270#define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */
271#define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512 bytes in */
272 /* byte mode */
273#define MMC_QUIRK_LONG_READ_TIME (1<<9) /* Data read time > CSD says */
274#define MMC_QUIRK_SEC_ERASE_TRIM_BROKEN (1<<10) /* Skip secure for erase/trim */
275#define MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */
276
277 unsigned int erase_size; /* erase size in sectors */
278 unsigned int erase_shift; /* if erase unit is power 2 */
279 unsigned int pref_erase; /* in sectors */
280 u8 erased_byte; /* value of erased bytes */
281
282 u32 raw_cid[4]; /* raw card CID */
283 u32 raw_csd[4]; /* raw card CSD */
284 u32 raw_scr[2]; /* raw card SCR */
285 struct mmc_cid cid; /* card identification */
286 struct mmc_csd csd; /* card specific */
287 struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */
288 struct sd_scr scr; /* extra SD information */
289 struct sd_ssr ssr; /* yet more SD information */
290 struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
291
292 unsigned int sdio_funcs; /* number of SDIO functions */
293 struct sdio_cccr cccr; /* common card info */
294 struct sdio_cis cis; /* common tuple info */
295 struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
296 struct sdio_func *sdio_single_irq; /* SDIO function when only one IRQ active */
297 unsigned num_info; /* number of info strings */
298 const char **info; /* info strings */
299 struct sdio_func_tuple *tuples; /* unknown common tuples */
300
301 unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */
302 unsigned int mmc_avail_type; /* supported device type by both host and card */
303
304 struct dentry *debugfs_root;
305 struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
306 unsigned int nr_parts;
307};
308
309/*
310 * This function fill contents in mmc_part.
311 */
312static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
313 unsigned int part_cfg, char *name, int idx, bool ro,
314 int area_type)
315{
316 card->part[card->nr_parts].size = size;
317 card->part[card->nr_parts].part_cfg = part_cfg;
318 sprintf(card->part[card->nr_parts].name, name, idx);
319 card->part[card->nr_parts].force_ro = ro;
320 card->part[card->nr_parts].area_type = area_type;
321 card->nr_parts++;
322}
323
324static inline bool mmc_large_sector(struct mmc_card *card)
325{
326 return card->ext_csd.data_sector_size == 4096;
327}
328
329/*
330 * The world is not perfect and supplies us with broken mmc/sdio devices.
331 * For at least some of these bugs we need a work-around.
332 */
333
334struct mmc_fixup {
335 /* CID-specific fields. */
336 const char *name;
337
338 /* Valid revision range */
339 u64 rev_start, rev_end;
340
341 unsigned int manfid;
342 unsigned short oemid;
343
344 /* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
345 u16 cis_vendor, cis_device;
346
347 void (*vendor_fixup)(struct mmc_card *card, int data);
348 int data;
349};
350
351#define CID_MANFID_ANY (-1u)
352#define CID_OEMID_ANY ((unsigned short) -1)
353#define CID_NAME_ANY (NULL)
354
355#define END_FIXUP { NULL }
356
357#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end, \
358 _cis_vendor, _cis_device, \
359 _fixup, _data) \
360 { \
361 .name = (_name), \
362 .manfid = (_manfid), \
363 .oemid = (_oemid), \
364 .rev_start = (_rev_start), \
365 .rev_end = (_rev_end), \
366 .cis_vendor = (_cis_vendor), \
367 .cis_device = (_cis_device), \
368 .vendor_fixup = (_fixup), \
369 .data = (_data), \
370 }
371
372#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end, \
373 _fixup, _data) \
374 _FIXUP_EXT(_name, _manfid, \
375 _oemid, _rev_start, _rev_end, \
376 SDIO_ANY_ID, SDIO_ANY_ID, \
377 _fixup, _data) \
378
379#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
380 MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
381
382#define SDIO_FIXUP(_vendor, _device, _fixup, _data) \
383 _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY, \
384 CID_OEMID_ANY, 0, -1ull, \
385 _vendor, _device, \
386 _fixup, _data) \
387
388#define cid_rev(hwrev, fwrev, year, month) \
389 (((u64) hwrev) << 40 | \
390 ((u64) fwrev) << 32 | \
391 ((u64) year) << 16 | \
392 ((u64) month))
393
394#define cid_rev_card(card) \
395 cid_rev(card->cid.hwrev, \
396 card->cid.fwrev, \
397 card->cid.year, \
398 card->cid.month)
399
400/*
401 * Unconditionally quirk add/remove.
402 */
403
404static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
405{
406 card->quirks |= data;
407}
408
409static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
410{
411 card->quirks &= ~data;
412}
413
414#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
415#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
416#define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO)
417
418#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
419#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
420#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
421#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
422#define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED))
423#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
424#define mmc_card_suspended(c) ((c)->state & MMC_STATE_SUSPENDED)
425
426#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
427#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
428#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
429#define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
430#define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
431#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS)
432#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS)
433#define mmc_card_set_suspended(c) ((c)->state |= MMC_STATE_SUSPENDED)
434#define mmc_card_clr_suspended(c) ((c)->state &= ~MMC_STATE_SUSPENDED)
435
436/*
437 * Quirk add/remove for MMC products.
438 */
439
440static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
441{
442 if (mmc_card_mmc(card))
443 card->quirks |= data;
444}
445
446static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
447 int data)
448{
449 if (mmc_card_mmc(card))
450 card->quirks &= ~data;
451}
452
453/*
454 * Quirk add/remove for SD products.
455 */
456
457static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
458{
459 if (mmc_card_sd(card))
460 card->quirks |= data;
461}
462
463static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
464 int data)
465{
466 if (mmc_card_sd(card))
467 card->quirks &= ~data;
468}
469
470static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
471{
472 return c->quirks & MMC_QUIRK_LENIENT_FN0;
473}
474
475static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
476{
477 return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
478}
479
480static inline int mmc_card_disable_cd(const struct mmc_card *c)
481{
482 return c->quirks & MMC_QUIRK_DISABLE_CD;
483}
484
485static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
486{
487 return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
488}
489
490static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
491{
492 return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
493}
494
495static inline int mmc_card_long_read_time(const struct mmc_card *c)
496{
497 return c->quirks & MMC_QUIRK_LONG_READ_TIME;
498}
499
500static inline int mmc_card_broken_irq_polling(const struct mmc_card *c)
501{
502 return c->quirks & MMC_QUIRK_BROKEN_IRQ_POLLING;
503}
504
505#define mmc_card_name(c) ((c)->cid.prod_name)
506#define mmc_card_id(c) (dev_name(&(c)->dev))
507
508#define mmc_dev_to_card(d) container_of(d, struct mmc_card, dev)
509
510#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
511#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
512#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
513
514/*
515 * MMC device driver (e.g., Flash card, I/O card...)
516 */
517struct mmc_driver {
518 struct device_driver drv;
519 int (*probe)(struct mmc_card *);
520 void (*remove)(struct mmc_card *);
521 int (*suspend)(struct mmc_card *);
522 int (*resume)(struct mmc_card *);
523 void (*shutdown)(struct mmc_card *);
524};
525
526extern int mmc_register_driver(struct mmc_driver *);
527extern void mmc_unregister_driver(struct mmc_driver *);
528
529extern void mmc_fixup_device(struct mmc_card *card,
530 const struct mmc_fixup *table);
531
532#endif /* LINUX_MMC_CARD_H */