Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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#define MMC_HIGH_26_MAX_DTR 26000000
67#define MMC_HIGH_52_MAX_DTR 52000000
68#define MMC_HIGH_DDR_MAX_DTR 52000000
69#define MMC_HS200_MAX_DTR 200000000
70 unsigned int sectors;
71 unsigned int card_type;
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_s_a_timeout; /* 217 */
98 u8 raw_hc_erase_gap_size; /* 221 */
99 u8 raw_erase_timeout_mult; /* 223 */
100 u8 raw_hc_erase_grp_size; /* 224 */
101 u8 raw_sec_trim_mult; /* 229 */
102 u8 raw_sec_erase_mult; /* 230 */
103 u8 raw_sec_feature_support;/* 231 */
104 u8 raw_trim_mult; /* 232 */
105 u8 raw_bkops_status; /* 246 */
106 u8 raw_sectors[4]; /* 212 - 4 bytes */
107
108 unsigned int feature_support;
109#define MMC_DISCARD_FEATURE BIT(0) /* CMD38 feature */
110};
111
112struct sd_scr {
113 unsigned char sda_vsn;
114 unsigned char sda_spec3;
115 unsigned char bus_widths;
116#define SD_SCR_BUS_WIDTH_1 (1<<0)
117#define SD_SCR_BUS_WIDTH_4 (1<<2)
118 unsigned char cmds;
119#define SD_SCR_CMD20_SUPPORT (1<<0)
120#define SD_SCR_CMD23_SUPPORT (1<<1)
121};
122
123struct sd_ssr {
124 unsigned int au; /* In sectors */
125 unsigned int erase_timeout; /* In milliseconds */
126 unsigned int erase_offset; /* In milliseconds */
127};
128
129struct sd_switch_caps {
130 unsigned int hs_max_dtr;
131 unsigned int uhs_max_dtr;
132#define HIGH_SPEED_MAX_DTR 50000000
133#define UHS_SDR104_MAX_DTR 208000000
134#define UHS_SDR50_MAX_DTR 100000000
135#define UHS_DDR50_MAX_DTR 50000000
136#define UHS_SDR25_MAX_DTR UHS_DDR50_MAX_DTR
137#define UHS_SDR12_MAX_DTR 25000000
138 unsigned int sd3_bus_mode;
139#define UHS_SDR12_BUS_SPEED 0
140#define HIGH_SPEED_BUS_SPEED 1
141#define UHS_SDR25_BUS_SPEED 1
142#define UHS_SDR50_BUS_SPEED 2
143#define UHS_SDR104_BUS_SPEED 3
144#define UHS_DDR50_BUS_SPEED 4
145
146#define SD_MODE_HIGH_SPEED (1 << HIGH_SPEED_BUS_SPEED)
147#define SD_MODE_UHS_SDR12 (1 << UHS_SDR12_BUS_SPEED)
148#define SD_MODE_UHS_SDR25 (1 << UHS_SDR25_BUS_SPEED)
149#define SD_MODE_UHS_SDR50 (1 << UHS_SDR50_BUS_SPEED)
150#define SD_MODE_UHS_SDR104 (1 << UHS_SDR104_BUS_SPEED)
151#define SD_MODE_UHS_DDR50 (1 << UHS_DDR50_BUS_SPEED)
152 unsigned int sd3_drv_type;
153#define SD_DRIVER_TYPE_B 0x01
154#define SD_DRIVER_TYPE_A 0x02
155#define SD_DRIVER_TYPE_C 0x04
156#define SD_DRIVER_TYPE_D 0x08
157 unsigned int sd3_curr_limit;
158#define SD_SET_CURRENT_LIMIT_200 0
159#define SD_SET_CURRENT_LIMIT_400 1
160#define SD_SET_CURRENT_LIMIT_600 2
161#define SD_SET_CURRENT_LIMIT_800 3
162#define SD_SET_CURRENT_NO_CHANGE (-1)
163
164#define SD_MAX_CURRENT_200 (1 << SD_SET_CURRENT_LIMIT_200)
165#define SD_MAX_CURRENT_400 (1 << SD_SET_CURRENT_LIMIT_400)
166#define SD_MAX_CURRENT_600 (1 << SD_SET_CURRENT_LIMIT_600)
167#define SD_MAX_CURRENT_800 (1 << SD_SET_CURRENT_LIMIT_800)
168};
169
170struct sdio_cccr {
171 unsigned int sdio_vsn;
172 unsigned int sd_vsn;
173 unsigned int multi_block:1,
174 low_speed:1,
175 wide_bus:1,
176 high_power:1,
177 high_speed:1,
178 disable_cd:1;
179};
180
181struct sdio_cis {
182 unsigned short vendor;
183 unsigned short device;
184 unsigned short blksize;
185 unsigned int max_dtr;
186};
187
188struct mmc_host;
189struct sdio_func;
190struct sdio_func_tuple;
191
192#define SDIO_MAX_FUNCS 7
193
194enum mmc_blk_status {
195 MMC_BLK_SUCCESS = 0,
196 MMC_BLK_PARTIAL,
197 MMC_BLK_CMD_ERR,
198 MMC_BLK_RETRY,
199 MMC_BLK_ABORT,
200 MMC_BLK_DATA_ERR,
201 MMC_BLK_ECC_ERR,
202 MMC_BLK_NOMEDIUM,
203 MMC_BLK_NEW_REQUEST,
204};
205
206/* The number of MMC physical partitions. These consist of:
207 * boot partitions (2), general purpose partitions (4) in MMC v4.4.
208 */
209#define MMC_NUM_BOOT_PARTITION 2
210#define MMC_NUM_GP_PARTITION 4
211#define MMC_NUM_PHY_PARTITION 6
212#define MAX_MMC_PART_NAME_LEN 20
213
214/*
215 * MMC Physical partitions
216 */
217struct mmc_part {
218 unsigned int size; /* partition size (in bytes) */
219 unsigned int part_cfg; /* partition type */
220 char name[MAX_MMC_PART_NAME_LEN];
221 bool force_ro; /* to make boot parts RO by default */
222 unsigned int area_type;
223#define MMC_BLK_DATA_AREA_MAIN (1<<0)
224#define MMC_BLK_DATA_AREA_BOOT (1<<1)
225#define MMC_BLK_DATA_AREA_GP (1<<2)
226#define MMC_BLK_DATA_AREA_RPMB (1<<3)
227};
228
229/*
230 * MMC device
231 */
232struct mmc_card {
233 struct mmc_host *host; /* the host this device belongs to */
234 struct device dev; /* the device */
235 unsigned int rca; /* relative card address of device */
236 unsigned int type; /* card type */
237#define MMC_TYPE_MMC 0 /* MMC card */
238#define MMC_TYPE_SD 1 /* SD card */
239#define MMC_TYPE_SDIO 2 /* SDIO card */
240#define MMC_TYPE_SD_COMBO 3 /* SD combo (IO+mem) card */
241 unsigned int state; /* (our) card state */
242#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
243#define MMC_STATE_READONLY (1<<1) /* card is read-only */
244#define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
245#define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
246#define MMC_STATE_HIGHSPEED_DDR (1<<4) /* card is in high speed mode */
247#define MMC_STATE_ULTRAHIGHSPEED (1<<5) /* card is in ultra high speed mode */
248#define MMC_CARD_SDXC (1<<6) /* card is SDXC */
249#define MMC_CARD_REMOVED (1<<7) /* card has been removed */
250#define MMC_STATE_HIGHSPEED_200 (1<<8) /* card is in HS200 mode */
251#define MMC_STATE_DOING_BKOPS (1<<10) /* card is doing BKOPS */
252 unsigned int quirks; /* card quirks */
253#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
254#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */
255 /* for byte mode */
256#define MMC_QUIRK_NONSTD_SDIO (1<<2) /* non-standard SDIO card attached */
257 /* (missing CIA registers) */
258#define MMC_QUIRK_BROKEN_CLK_GATING (1<<3) /* clock gating the sdio bus will make card fail */
259#define MMC_QUIRK_NONSTD_FUNC_IF (1<<4) /* SDIO card has nonstd function interfaces */
260#define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */
261#define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */
262#define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */
263#define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512 bytes in */
264#define MMC_QUIRK_LONG_READ_TIME (1<<9) /* Data read time > CSD says */
265#define MMC_QUIRK_SEC_ERASE_TRIM_BROKEN (1<<10) /* Skip secure for erase/trim */
266 /* byte mode */
267
268 unsigned int erase_size; /* erase size in sectors */
269 unsigned int erase_shift; /* if erase unit is power 2 */
270 unsigned int pref_erase; /* in sectors */
271 u8 erased_byte; /* value of erased bytes */
272
273 u32 raw_cid[4]; /* raw card CID */
274 u32 raw_csd[4]; /* raw card CSD */
275 u32 raw_scr[2]; /* raw card SCR */
276 struct mmc_cid cid; /* card identification */
277 struct mmc_csd csd; /* card specific */
278 struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */
279 struct sd_scr scr; /* extra SD information */
280 struct sd_ssr ssr; /* yet more SD information */
281 struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
282
283 unsigned int sdio_funcs; /* number of SDIO functions */
284 struct sdio_cccr cccr; /* common card info */
285 struct sdio_cis cis; /* common tuple info */
286 struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
287 struct sdio_func *sdio_single_irq; /* SDIO function when only one IRQ active */
288 unsigned num_info; /* number of info strings */
289 const char **info; /* info strings */
290 struct sdio_func_tuple *tuples; /* unknown common tuples */
291
292 unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */
293
294 struct dentry *debugfs_root;
295 struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
296 unsigned int nr_parts;
297};
298
299/*
300 * This function fill contents in mmc_part.
301 */
302static inline void mmc_part_add(struct mmc_card *card, unsigned int size,
303 unsigned int part_cfg, char *name, int idx, bool ro,
304 int area_type)
305{
306 card->part[card->nr_parts].size = size;
307 card->part[card->nr_parts].part_cfg = part_cfg;
308 sprintf(card->part[card->nr_parts].name, name, idx);
309 card->part[card->nr_parts].force_ro = ro;
310 card->part[card->nr_parts].area_type = area_type;
311 card->nr_parts++;
312}
313
314static inline bool mmc_large_sector(struct mmc_card *card)
315{
316 return card->ext_csd.data_sector_size == 4096;
317}
318
319/*
320 * The world is not perfect and supplies us with broken mmc/sdio devices.
321 * For at least some of these bugs we need a work-around.
322 */
323
324struct mmc_fixup {
325 /* CID-specific fields. */
326 const char *name;
327
328 /* Valid revision range */
329 u64 rev_start, rev_end;
330
331 unsigned int manfid;
332 unsigned short oemid;
333
334 /* SDIO-specfic fields. You can use SDIO_ANY_ID here of course */
335 u16 cis_vendor, cis_device;
336
337 void (*vendor_fixup)(struct mmc_card *card, int data);
338 int data;
339};
340
341#define CID_MANFID_ANY (-1u)
342#define CID_OEMID_ANY ((unsigned short) -1)
343#define CID_NAME_ANY (NULL)
344
345#define END_FIXUP { 0 }
346
347#define _FIXUP_EXT(_name, _manfid, _oemid, _rev_start, _rev_end, \
348 _cis_vendor, _cis_device, \
349 _fixup, _data) \
350 { \
351 .name = (_name), \
352 .manfid = (_manfid), \
353 .oemid = (_oemid), \
354 .rev_start = (_rev_start), \
355 .rev_end = (_rev_end), \
356 .cis_vendor = (_cis_vendor), \
357 .cis_device = (_cis_device), \
358 .vendor_fixup = (_fixup), \
359 .data = (_data), \
360 }
361
362#define MMC_FIXUP_REV(_name, _manfid, _oemid, _rev_start, _rev_end, \
363 _fixup, _data) \
364 _FIXUP_EXT(_name, _manfid, \
365 _oemid, _rev_start, _rev_end, \
366 SDIO_ANY_ID, SDIO_ANY_ID, \
367 _fixup, _data) \
368
369#define MMC_FIXUP(_name, _manfid, _oemid, _fixup, _data) \
370 MMC_FIXUP_REV(_name, _manfid, _oemid, 0, -1ull, _fixup, _data)
371
372#define SDIO_FIXUP(_vendor, _device, _fixup, _data) \
373 _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_ANY, \
374 CID_OEMID_ANY, 0, -1ull, \
375 _vendor, _device, \
376 _fixup, _data) \
377
378#define cid_rev(hwrev, fwrev, year, month) \
379 (((u64) hwrev) << 40 | \
380 ((u64) fwrev) << 32 | \
381 ((u64) year) << 16 | \
382 ((u64) month))
383
384#define cid_rev_card(card) \
385 cid_rev(card->cid.hwrev, \
386 card->cid.fwrev, \
387 card->cid.year, \
388 card->cid.month)
389
390/*
391 * Unconditionally quirk add/remove.
392 */
393
394static inline void __maybe_unused add_quirk(struct mmc_card *card, int data)
395{
396 card->quirks |= data;
397}
398
399static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
400{
401 card->quirks &= ~data;
402}
403
404#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
405#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
406#define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO)
407
408#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
409#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
410#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED)
411#define mmc_card_hs200(c) ((c)->state & MMC_STATE_HIGHSPEED_200)
412#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
413#define mmc_card_ddr_mode(c) ((c)->state & MMC_STATE_HIGHSPEED_DDR)
414#define mmc_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
415#define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
416#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
417#define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED))
418#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
419
420#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
421#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
422#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
423#define mmc_card_set_hs200(c) ((c)->state |= MMC_STATE_HIGHSPEED_200)
424#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
425#define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
426#define mmc_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
427#define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
428#define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
429#define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
430#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS)
431#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS)
432
433/*
434 * Quirk add/remove for MMC products.
435 */
436
437static inline void __maybe_unused add_quirk_mmc(struct mmc_card *card, int data)
438{
439 if (mmc_card_mmc(card))
440 card->quirks |= data;
441}
442
443static inline void __maybe_unused remove_quirk_mmc(struct mmc_card *card,
444 int data)
445{
446 if (mmc_card_mmc(card))
447 card->quirks &= ~data;
448}
449
450/*
451 * Quirk add/remove for SD products.
452 */
453
454static inline void __maybe_unused add_quirk_sd(struct mmc_card *card, int data)
455{
456 if (mmc_card_sd(card))
457 card->quirks |= data;
458}
459
460static inline void __maybe_unused remove_quirk_sd(struct mmc_card *card,
461 int data)
462{
463 if (mmc_card_sd(card))
464 card->quirks &= ~data;
465}
466
467static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
468{
469 return c->quirks & MMC_QUIRK_LENIENT_FN0;
470}
471
472static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
473{
474 return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
475}
476
477static inline int mmc_card_disable_cd(const struct mmc_card *c)
478{
479 return c->quirks & MMC_QUIRK_DISABLE_CD;
480}
481
482static inline int mmc_card_nonstd_func_interface(const struct mmc_card *c)
483{
484 return c->quirks & MMC_QUIRK_NONSTD_FUNC_IF;
485}
486
487static inline int mmc_card_broken_byte_mode_512(const struct mmc_card *c)
488{
489 return c->quirks & MMC_QUIRK_BROKEN_BYTE_MODE_512;
490}
491
492static inline int mmc_card_long_read_time(const struct mmc_card *c)
493{
494 return c->quirks & MMC_QUIRK_LONG_READ_TIME;
495}
496
497#define mmc_card_name(c) ((c)->cid.prod_name)
498#define mmc_card_id(c) (dev_name(&(c)->dev))
499
500#define mmc_dev_to_card(d) container_of(d, struct mmc_card, dev)
501
502#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
503#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
504#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
505
506/*
507 * MMC device driver (e.g., Flash card, I/O card...)
508 */
509struct mmc_driver {
510 struct device_driver drv;
511 int (*probe)(struct mmc_card *);
512 void (*remove)(struct mmc_card *);
513 int (*suspend)(struct mmc_card *);
514 int (*resume)(struct mmc_card *);
515};
516
517extern int mmc_register_driver(struct mmc_driver *);
518extern void mmc_unregister_driver(struct mmc_driver *);
519
520extern void mmc_fixup_device(struct mmc_card *card,
521 const struct mmc_fixup *table);
522
523#endif /* LINUX_MMC_CARD_H */