Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
7ea239d9 | 2 | /* |
70f10482 | 3 | * linux/drivers/mmc/core/mmc.c |
7ea239d9 PO |
4 | * |
5 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. | |
6 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. | |
7 | * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. | |
7ea239d9 PO |
8 | */ |
9 | ||
10 | #include <linux/err.h> | |
81f8a7be | 11 | #include <linux/of.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
0205a904 | 13 | #include <linux/stat.h> |
0cb403a2 | 14 | #include <linux/pm_runtime.h> |
ac9d2555 | 15 | #include <linux/random.h> |
f5d8a5fe | 16 | #include <linux/sysfs.h> |
7ea239d9 PO |
17 | |
18 | #include <linux/mmc/host.h> | |
19 | #include <linux/mmc/card.h> | |
20 | #include <linux/mmc/mmc.h> | |
21 | ||
22 | #include "core.h" | |
4facdde1 | 23 | #include "card.h" |
436f8daa | 24 | #include "host.h" |
4101c16a | 25 | #include "bus.h" |
7ea239d9 | 26 | #include "mmc_ops.h" |
28fc64af | 27 | #include "quirks.h" |
4c4cb171 | 28 | #include "sd_ops.h" |
52c8212d | 29 | #include "pwrseq.h" |
7ea239d9 | 30 | |
fe1b5700 | 31 | #define DEFAULT_CMD6_TIMEOUT_MS 500 |
e3ae3401 | 32 | #define MIN_CACHE_EN_TIMEOUT_MS 1600 |
8ae11ede | 33 | #define CACHE_FLUSH_TIMEOUT_MS 30000 /* 30s */ |
fe1b5700 | 34 | |
7ea239d9 PO |
35 | static const unsigned int tran_exp[] = { |
36 | 10000, 100000, 1000000, 10000000, | |
37 | 0, 0, 0, 0 | |
38 | }; | |
39 | ||
40 | static const unsigned char tran_mant[] = { | |
41 | 0, 10, 12, 13, 15, 20, 25, 30, | |
42 | 35, 40, 45, 50, 55, 60, 70, 80, | |
43 | }; | |
44 | ||
4406ae21 | 45 | static const unsigned int taac_exp[] = { |
7ea239d9 PO |
46 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
47 | }; | |
48 | ||
4406ae21 | 49 | static const unsigned int taac_mant[] = { |
7ea239d9 PO |
50 | 0, 10, 12, 13, 15, 20, 25, 30, |
51 | 35, 40, 45, 50, 55, 60, 70, 80, | |
52 | }; | |
53 | ||
54 | #define UNSTUFF_BITS(resp,start,size) \ | |
55 | ({ \ | |
56 | const int __size = size; \ | |
57 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
58 | const int __off = 3 - ((start) / 32); \ | |
59 | const int __shft = (start) & 31; \ | |
60 | u32 __res; \ | |
61 | \ | |
62 | __res = resp[__off] >> __shft; \ | |
63 | if (__size + __shft > 32) \ | |
64 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
65 | __res & __mask; \ | |
66 | }) | |
67 | ||
68 | /* | |
69 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
70 | */ | |
bd766312 | 71 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
72 | { |
73 | u32 *resp = card->raw_cid; | |
74 | ||
ac9d2555 LW |
75 | /* |
76 | * Add the raw card ID (cid) data to the entropy pool. It doesn't | |
77 | * matter that not all of it is unique, it's just bonus entropy. | |
78 | */ | |
79 | add_device_randomness(&card->raw_cid, sizeof(card->raw_cid)); | |
80 | ||
7ea239d9 PO |
81 | /* |
82 | * The selection of the format here is based upon published | |
83 | * specs from sandisk and from what people have reported. | |
84 | */ | |
85 | switch (card->csd.mmca_vsn) { | |
86 | case 0: /* MMC v1.0 - v1.2 */ | |
87 | case 1: /* MMC v1.4 */ | |
88 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
89 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
90 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
91 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
92 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
93 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
94 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
95 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
96 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
97 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
98 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
99 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
100 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
101 | break; | |
102 | ||
103 | case 2: /* MMC v2.0 - v2.2 */ | |
104 | case 3: /* MMC v3.1 - v3.3 */ | |
105 | case 4: /* MMC v4 */ | |
106 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
421b605e | 107 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); |
7ea239d9 PO |
108 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
109 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
110 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
111 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
112 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
113 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 114 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
115 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
116 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
117 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
118 | break; | |
119 | ||
120 | default: | |
a3c76eb9 | 121 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 122 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 123 | return -EINVAL; |
7ea239d9 | 124 | } |
bd766312 PO |
125 | |
126 | return 0; | |
7ea239d9 PO |
127 | } |
128 | ||
dfe86cba AH |
129 | static void mmc_set_erase_size(struct mmc_card *card) |
130 | { | |
131 | if (card->ext_csd.erase_group_def & 1) | |
132 | card->erase_size = card->ext_csd.hc_erase_size; | |
133 | else | |
134 | card->erase_size = card->csd.erase_size; | |
135 | ||
136 | mmc_init_erase(card); | |
137 | } | |
138 | ||
e4df56ad LG |
139 | |
140 | static void mmc_set_wp_grp_size(struct mmc_card *card) | |
141 | { | |
142 | if (card->ext_csd.erase_group_def & 1) | |
143 | card->wp_grp_size = card->ext_csd.hc_erase_size * | |
144 | card->ext_csd.raw_hc_erase_gap_size; | |
145 | else | |
146 | card->wp_grp_size = card->csd.erase_size * | |
147 | (card->csd.wp_grp_size + 1); | |
148 | } | |
149 | ||
7ea239d9 PO |
150 | /* |
151 | * Given a 128-bit response, decode to our card CSD structure. | |
152 | */ | |
bd766312 | 153 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
154 | { |
155 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 156 | unsigned int e, m, a, b; |
7ea239d9 PO |
157 | u32 *resp = card->raw_csd; |
158 | ||
159 | /* | |
160 | * We only understand CSD structure v1.1 and v1.2. | |
161 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 162 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 163 | */ |
6da24b78 KP |
164 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
165 | if (csd->structure == 0) { | |
a3c76eb9 | 166 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 167 | mmc_hostname(card->host), csd->structure); |
bd766312 | 168 | return -EINVAL; |
7ea239d9 PO |
169 | } |
170 | ||
171 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
172 | m = UNSTUFF_BITS(resp, 115, 4); | |
173 | e = UNSTUFF_BITS(resp, 112, 3); | |
4406ae21 SL |
174 | csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; |
175 | csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
7ea239d9 PO |
176 | |
177 | m = UNSTUFF_BITS(resp, 99, 4); | |
178 | e = UNSTUFF_BITS(resp, 96, 3); | |
179 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
180 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
181 | ||
182 | e = UNSTUFF_BITS(resp, 47, 3); | |
183 | m = UNSTUFF_BITS(resp, 62, 12); | |
184 | csd->capacity = (1 + m) << (e + 2); | |
185 | ||
186 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
187 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
188 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
189 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 190 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
191 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
192 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
193 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 194 | |
dfe86cba AH |
195 | if (csd->write_blkbits >= 9) { |
196 | a = UNSTUFF_BITS(resp, 42, 5); | |
197 | b = UNSTUFF_BITS(resp, 37, 5); | |
198 | csd->erase_size = (a + 1) * (b + 1); | |
199 | csd->erase_size <<= csd->write_blkbits - 9; | |
e4df56ad | 200 | csd->wp_grp_size = UNSTUFF_BITS(resp, 32, 5); |
dfe86cba AH |
201 | } |
202 | ||
bd766312 | 203 | return 0; |
7ea239d9 PO |
204 | } |
205 | ||
96cf5f02 SJ |
206 | static void mmc_select_card_type(struct mmc_card *card) |
207 | { | |
208 | struct mmc_host *host = card->host; | |
0a5b6438 | 209 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 210 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 211 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 212 | unsigned int avail_type = 0; |
96cf5f02 | 213 | |
2415c0ef SJ |
214 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
215 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 216 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
217 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
218 | } | |
96cf5f02 SJ |
219 | |
220 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 221 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 222 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
223 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
224 | } | |
96cf5f02 | 225 | |
20f921bb | 226 | if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && |
2415c0ef | 227 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { |
96cf5f02 | 228 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
229 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
230 | } | |
231 | ||
232 | if (caps & MMC_CAP_1_2V_DDR && | |
233 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
234 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
235 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
236 | } | |
96cf5f02 | 237 | |
2415c0ef SJ |
238 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
239 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 240 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
241 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
242 | } | |
243 | ||
244 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
245 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 246 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
247 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
248 | } | |
96cf5f02 | 249 | |
0a5b6438 SJ |
250 | if (caps2 & MMC_CAP2_HS400_1_8V && |
251 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
252 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
253 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
254 | } | |
255 | ||
256 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
257 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
258 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
259 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
260 | } | |
261 | ||
81ac2af6 SL |
262 | if ((caps2 & MMC_CAP2_HS400_ES) && |
263 | card->ext_csd.strobe_support && | |
264 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
265 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
266 | ||
96cf5f02 | 267 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 268 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 269 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
270 | } |
271 | ||
b4493eea GS |
272 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
273 | { | |
994324bb GS |
274 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
275 | ||
276 | /* | |
277 | * Disable these attributes by default | |
278 | */ | |
279 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
280 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
281 | |
282 | /* | |
283 | * Enhanced area feature support -- check whether the eMMC | |
284 | * card has the Enhanced area enabled. If so, export enhanced | |
285 | * area offset and size to user by adding sysfs interface. | |
286 | */ | |
287 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
288 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
289 | if (card->ext_csd.partition_setting_completed) { |
290 | hc_erase_grp_sz = | |
291 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
292 | hc_wp_grp_sz = | |
293 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 294 | |
994324bb GS |
295 | /* |
296 | * calculate the enhanced data area offset, in bytes | |
297 | */ | |
298 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
299 | (((unsigned long long)ext_csd[139]) << 24) + |
300 | (((unsigned long long)ext_csd[138]) << 16) + | |
301 | (((unsigned long long)ext_csd[137]) << 8) + | |
302 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
303 | if (mmc_card_blockaddr(card)) |
304 | card->ext_csd.enhanced_area_offset <<= 9; | |
305 | /* | |
306 | * calculate the enhanced data area size, in kilobytes | |
307 | */ | |
308 | card->ext_csd.enhanced_area_size = | |
309 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
310 | ext_csd[140]; | |
311 | card->ext_csd.enhanced_area_size *= | |
312 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
313 | card->ext_csd.enhanced_area_size <<= 9; | |
314 | } else { | |
315 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
316 | mmc_hostname(card->host)); | |
317 | } | |
b4493eea GS |
318 | } |
319 | } | |
320 | ||
f3d7c229 | 321 | static void mmc_part_add(struct mmc_card *card, u64 size, |
4facdde1 UH |
322 | unsigned int part_cfg, char *name, int idx, bool ro, |
323 | int area_type) | |
324 | { | |
325 | card->part[card->nr_parts].size = size; | |
326 | card->part[card->nr_parts].part_cfg = part_cfg; | |
327 | sprintf(card->part[card->nr_parts].name, name, idx); | |
328 | card->part[card->nr_parts].force_ro = ro; | |
329 | card->part[card->nr_parts].area_type = area_type; | |
330 | card->nr_parts++; | |
331 | } | |
332 | ||
b4493eea GS |
333 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) |
334 | { | |
b4493eea | 335 | int idx; |
994324bb | 336 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
f3d7c229 | 337 | u64 part_size; |
b4493eea GS |
338 | |
339 | /* | |
340 | * General purpose partition feature support -- | |
341 | * If ext_csd has the size of general purpose partitions, | |
342 | * set size, part_cfg, partition name in mmc_part. | |
343 | */ | |
344 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
345 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
346 | hc_erase_grp_sz = |
347 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
348 | hc_wp_grp_sz = | |
349 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
350 | |
351 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
352 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
353 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
354 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
355 | continue; | |
994324bb GS |
356 | if (card->ext_csd.partition_setting_completed == 0) { |
357 | pr_warn("%s: has partition size defined without partition complete\n", | |
358 | mmc_hostname(card->host)); | |
359 | break; | |
360 | } | |
b4493eea GS |
361 | part_size = |
362 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
363 | << 16) + | |
364 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
365 | << 8) + | |
366 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
f3d7c229 | 367 | part_size *= (hc_erase_grp_sz * hc_wp_grp_sz); |
b4493eea GS |
368 | mmc_part_add(card, part_size << 19, |
369 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
370 | "gp%d", idx, false, | |
371 | MMC_BLK_DATA_AREA_GP); | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
1c447116 AH |
376 | /* Minimum partition switch timeout in milliseconds */ |
377 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
378 | ||
08ee80cc PR |
379 | /* |
380 | * Decode extended CSD. | |
381 | */ | |
076ec38a | 382 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 383 | { |
e0c368d5 | 384 | int err = 0, idx; |
f3d7c229 | 385 | u64 part_size; |
81f8a7be HG |
386 | struct device_node *np; |
387 | bool broken_hpi = false; | |
08ee80cc | 388 | |
6da24b78 | 389 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 390 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 391 | if (card->csd.structure == 3) { |
f39b2dd9 | 392 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 393 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 394 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 395 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
396 | err = -EINVAL; |
397 | goto out; | |
398 | } | |
399 | } | |
400 | ||
81f8a7be HG |
401 | np = mmc_of_find_child_device(card->host, 0); |
402 | if (np && of_device_is_compatible(np, "mmc-card")) | |
403 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
404 | of_node_put(np); | |
405 | ||
03a59437 RI |
406 | /* |
407 | * The EXT_CSD format is meant to be forward compatible. As long | |
408 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
409 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
410 | */ | |
b1ebe384 | 411 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 412 | |
5320226a P |
413 | /* fixup device after ext_csd revision field is updated */ |
414 | mmc_fixup_device(card, mmc_ext_csd_fixups); | |
415 | ||
f39b2dd9 PR |
416 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
417 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
418 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
419 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 420 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
421 | card->ext_csd.sectors = |
422 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
423 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
424 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
425 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
426 | |
427 | /* Cards with density > 2GiB are sector addressed */ | |
428 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
429 | mmc_card_set_blockaddr(card); |
430 | } | |
96cf5f02 | 431 | |
81ac2af6 | 432 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 433 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
7ea239d9 | 434 | |
f39b2dd9 PR |
435 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
436 | card->ext_csd.raw_erase_timeout_mult = | |
437 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
438 | card->ext_csd.raw_hc_erase_grp_size = | |
439 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
dc913385 DO |
440 | card->ext_csd.raw_boot_mult = |
441 | ext_csd[EXT_CSD_BOOT_MULT]; | |
b1ebe384 JL |
442 | if (card->ext_csd.rev >= 3) { |
443 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
444 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
445 | ||
446 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
447 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
448 | |
449 | /* Sleep / awake timeout in 100ns units */ | |
450 | if (sa_shift > 0 && sa_shift <= 0x17) | |
451 | card->ext_csd.sa_timeout = | |
452 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
453 | card->ext_csd.erase_group_def = |
454 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
455 | card->ext_csd.hc_erase_timeout = 300 * | |
456 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
457 | card->ext_csd.hc_erase_size = | |
458 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
459 | |
460 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
461 | |
462 | /* | |
463 | * There are two boot regions of equal size, defined in | |
464 | * multiples of 128K. | |
465 | */ | |
e0c368d5 NJ |
466 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
467 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
468 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
469 | mmc_part_add(card, part_size, | |
470 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
471 | "boot%d", idx, true, |
472 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
473 | } |
474 | } | |
dfe86cba AH |
475 | } |
476 | ||
f39b2dd9 | 477 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 478 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
479 | card->ext_csd.raw_sec_trim_mult = |
480 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
481 | card->ext_csd.raw_sec_erase_mult = | |
482 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
483 | card->ext_csd.raw_sec_feature_support = | |
484 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
485 | card->ext_csd.raw_trim_mult = | |
486 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 487 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 488 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 489 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
490 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
491 | EXT_CSD_PART_SETTING_COMPLETED) | |
492 | card->ext_csd.partition_setting_completed = 1; | |
493 | else | |
494 | card->ext_csd.partition_setting_completed = 0; | |
495 | ||
b4493eea | 496 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 497 | |
b4493eea | 498 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 499 | |
dfe86cba AH |
500 | card->ext_csd.sec_trim_mult = |
501 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
502 | card->ext_csd.sec_erase_mult = | |
503 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
504 | card->ext_csd.sec_feature_support = | |
505 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
506 | card->ext_csd.trim_timeout = 300 * | |
507 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
508 | |
509 | /* | |
510 | * Note that the call to mmc_part_add above defaults to read | |
511 | * only. If this default assumption is changed, the call must | |
512 | * take into account the value of boot_locked below. | |
513 | */ | |
514 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
515 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
516 | |
517 | /* Save power class values */ | |
518 | card->ext_csd.raw_pwr_cl_52_195 = | |
519 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
520 | card->ext_csd.raw_pwr_cl_26_195 = | |
521 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
522 | card->ext_csd.raw_pwr_cl_52_360 = | |
523 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
524 | card->ext_csd.raw_pwr_cl_26_360 = | |
525 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
526 | card->ext_csd.raw_pwr_cl_200_195 = | |
527 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
528 | card->ext_csd.raw_pwr_cl_200_360 = | |
529 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
530 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
531 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
532 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
533 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
534 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
535 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
536 | } |
537 | ||
b2499518 | 538 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
539 | /* Adjust production date as per JEDEC JESD84-B451 */ |
540 | if (card->cid.year < 2010) | |
541 | card->cid.year += 16; | |
542 | ||
950d56ac | 543 | /* check whether the eMMC card supports BKOPS */ |
ba9f39a7 | 544 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { |
950d56ac | 545 | card->ext_csd.bkops = 1; |
0501be64 AS |
546 | card->ext_csd.man_bkops_en = |
547 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
548 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
549 | card->ext_csd.raw_bkops_status = |
550 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
6962c2fb UY |
551 | if (card->ext_csd.man_bkops_en) |
552 | pr_debug("%s: MAN_BKOPS_EN bit is set\n", | |
950d56ac | 553 | mmc_hostname(card->host)); |
efff8e78 UY |
554 | card->ext_csd.auto_bkops_en = |
555 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
556 | EXT_CSD_AUTO_BKOPS_MASK); | |
557 | if (card->ext_csd.auto_bkops_en) | |
558 | pr_debug("%s: AUTO_BKOPS_EN bit is set\n", | |
559 | mmc_hostname(card->host)); | |
950d56ac JC |
560 | } |
561 | ||
eb0d8f13 | 562 | /* check whether the eMMC card supports HPI */ |
5320226a P |
563 | if (!mmc_card_broken_hpi(card) && |
564 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { | |
eb0d8f13 JC |
565 | card->ext_csd.hpi = 1; |
566 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
567 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
568 | else | |
569 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
570 | /* | |
571 | * Indicate the maximum timeout to close | |
572 | * a command interrupted by HPI | |
573 | */ | |
574 | card->ext_csd.out_of_int_time = | |
575 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
576 | } | |
577 | ||
f4c5522b | 578 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 579 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
580 | |
581 | /* | |
582 | * RPMB regions are defined in multiples of 128K. | |
583 | */ | |
584 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 585 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
586 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
587 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
588 | "rpmb", 0, false, | |
589 | MMC_BLK_DATA_AREA_RPMB); | |
590 | } | |
b2499518 | 591 | } |
f4c5522b | 592 | |
5238acbe | 593 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
594 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
595 | card->erased_byte = 0xFF; | |
596 | else | |
597 | card->erased_byte = 0x0; | |
598 | ||
336c716a | 599 | /* eMMC v4.5 or later */ |
fe1b5700 | 600 | card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; |
bec8726a | 601 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
602 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
603 | ||
b23cf0bd SJ |
604 | card->ext_csd.generic_cmd6_time = 10 * |
605 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
606 | card->ext_csd.power_off_longtime = 10 * |
607 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 608 | |
336c716a SJ |
609 | card->ext_csd.cache_size = |
610 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
611 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
612 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
613 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
614 | |
615 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
616 | card->ext_csd.data_sector_size = 4096; | |
617 | else | |
618 | card->ext_csd.data_sector_size = 512; | |
619 | ||
620 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
621 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
622 | card->ext_csd.data_tag_unit_size = | |
623 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
624 | (card->ext_csd.data_sector_size); | |
625 | } else { | |
626 | card->ext_csd.data_tag_unit_size = 0; | |
627 | } | |
a5075eb9 SD |
628 | } else { |
629 | card->ext_csd.data_sector_size = 512; | |
336c716a | 630 | } |
881d1c25 | 631 | |
66fbaccc AH |
632 | /* |
633 | * GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined | |
634 | * when accessing a specific field", so use it here if there is no | |
635 | * PARTITION_SWITCH_TIME. | |
636 | */ | |
637 | if (!card->ext_csd.part_time) | |
638 | card->ext_csd.part_time = card->ext_csd.generic_cmd6_time; | |
639 | /* Some eMMC set the value too low so set a minimum */ | |
640 | if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
641 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
642 | ||
0f762426 GG |
643 | /* eMMC v5 or later */ |
644 | if (card->ext_csd.rev >= 7) { | |
645 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
646 | MMC_FIRMWARE_LEN); | |
647 | card->ext_csd.ffu_capable = | |
648 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
649 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
46bc5c40 JL |
650 | |
651 | card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; | |
652 | card->ext_csd.device_life_time_est_typ_a = | |
653 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; | |
654 | card->ext_csd.device_life_time_est_typ_b = | |
655 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; | |
0f762426 | 656 | } |
925ff3a7 AH |
657 | |
658 | /* eMMC v5.1 or later */ | |
659 | if (card->ext_csd.rev >= 8) { | |
660 | card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & | |
661 | EXT_CSD_CMDQ_SUPPORTED; | |
662 | card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & | |
663 | EXT_CSD_CMDQ_DEPTH_MASK) + 1; | |
664 | /* Exclude inefficiently small queue depths */ | |
665 | if (card->ext_csd.cmdq_depth <= 2) { | |
666 | card->ext_csd.cmdq_support = false; | |
667 | card->ext_csd.cmdq_depth = 0; | |
668 | } | |
669 | if (card->ext_csd.cmdq_support) { | |
670 | pr_debug("%s: Command Queue supported depth %u\n", | |
671 | mmc_hostname(card->host), | |
672 | card->ext_csd.cmdq_depth); | |
673 | } | |
064f7e58 KK |
674 | card->ext_csd.enhanced_rpmb_supported = |
675 | (card->ext_csd.rel_param & | |
676 | EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); | |
925ff3a7 | 677 | } |
7ea239d9 | 678 | out: |
08ee80cc PR |
679 | return err; |
680 | } | |
681 | ||
076ec38a UH |
682 | static int mmc_read_ext_csd(struct mmc_card *card) |
683 | { | |
c197787c | 684 | u8 *ext_csd; |
076ec38a UH |
685 | int err; |
686 | ||
c197787c UH |
687 | if (!mmc_can_ext_csd(card)) |
688 | return 0; | |
689 | ||
076ec38a | 690 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
691 | if (err) { |
692 | /* If the host or the card can't do the switch, | |
693 | * fail more gracefully. */ | |
694 | if ((err != -EINVAL) | |
695 | && (err != -ENOSYS) | |
696 | && (err != -EFAULT)) | |
697 | return err; | |
698 | ||
699 | /* | |
700 | * High capacity cards should have this "magic" size | |
701 | * stored in their CSD. | |
702 | */ | |
703 | if (card->csd.capacity == (4096 * 512)) { | |
704 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
705 | mmc_hostname(card->host)); | |
706 | } else { | |
707 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
708 | mmc_hostname(card->host)); | |
709 | err = 0; | |
710 | } | |
711 | ||
076ec38a | 712 | return err; |
c197787c | 713 | } |
076ec38a UH |
714 | |
715 | err = mmc_decode_ext_csd(card, ext_csd); | |
716 | kfree(ext_csd); | |
717 | return err; | |
718 | } | |
719 | ||
f39b2dd9 | 720 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
721 | { |
722 | u8 *bw_ext_csd; | |
723 | int err; | |
724 | ||
f39b2dd9 PR |
725 | if (bus_width == MMC_BUS_WIDTH_1) |
726 | return 0; | |
727 | ||
08ee80cc | 728 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
729 | if (err) |
730 | return err; | |
08ee80cc | 731 | |
08ee80cc | 732 | /* only compare read only fields */ |
dd13b4ed | 733 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 734 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 735 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 736 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 737 | (card->ext_csd.rev == |
08ee80cc | 738 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 739 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 740 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 741 | (card->ext_csd.raw_card_type == |
08ee80cc | 742 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 743 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 744 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 745 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 746 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 747 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 748 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 749 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 750 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 751 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 752 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 753 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 754 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 755 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 756 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 757 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 758 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
759 | (card->ext_csd.raw_sectors[0] == |
760 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
761 | (card->ext_csd.raw_sectors[1] == | |
762 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
763 | (card->ext_csd.raw_sectors[2] == | |
764 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
765 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
766 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
767 | (card->ext_csd.raw_pwr_cl_52_195 == | |
768 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
769 | (card->ext_csd.raw_pwr_cl_26_195 == | |
770 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
771 | (card->ext_csd.raw_pwr_cl_52_360 == | |
772 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
773 | (card->ext_csd.raw_pwr_cl_26_360 == | |
774 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
775 | (card->ext_csd.raw_pwr_cl_200_195 == | |
776 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
777 | (card->ext_csd.raw_pwr_cl_200_360 == | |
778 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
779 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
780 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
781 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
782 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
783 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
784 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
785 | ||
08ee80cc PR |
786 | if (err) |
787 | err = -EINVAL; | |
788 | ||
00b41b58 | 789 | kfree(bw_ext_csd); |
7ea239d9 PO |
790 | return err; |
791 | } | |
792 | ||
51ec92e2 PO |
793 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
794 | card->raw_cid[2], card->raw_cid[3]); | |
795 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
796 | card->raw_csd[2], card->raw_csd[3]); | |
797 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
798 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
799 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
e4df56ad | 800 | MMC_DEV_ATTR(wp_grp_size, "%u\n", card->wp_grp_size << 9); |
0f762426 | 801 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
802 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
803 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
804 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
805 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 806 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
04fa0540 | 807 | MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); |
80a780a1 | 808 | MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); |
46bc5c40 JL |
809 | MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", |
810 | card->ext_csd.device_life_time_est_typ_a, | |
811 | card->ext_csd.device_life_time_est_typ_b); | |
51ec92e2 | 812 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
813 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
814 | card->ext_csd.enhanced_area_offset); | |
815 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 | 816 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
064f7e58 KK |
817 | MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", |
818 | card->ext_csd.enhanced_rpmb_supported); | |
188cc042 | 819 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); |
c892b0d8 | 820 | MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); |
974e85e9 | 821 | MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); |
b658af71 | 822 | MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); |
51ec92e2 | 823 | |
0f762426 GG |
824 | static ssize_t mmc_fwrev_show(struct device *dev, |
825 | struct device_attribute *attr, | |
826 | char *buf) | |
827 | { | |
828 | struct mmc_card *card = mmc_dev_to_card(dev); | |
829 | ||
f5d8a5fe SS |
830 | if (card->ext_csd.rev < 7) |
831 | return sysfs_emit(buf, "0x%x\n", card->cid.fwrev); | |
832 | else | |
833 | return sysfs_emit(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
834 | card->ext_csd.fwrev); | |
0f762426 GG |
835 | } |
836 | ||
837 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
838 | ||
6825a606 BP |
839 | static ssize_t mmc_dsr_show(struct device *dev, |
840 | struct device_attribute *attr, | |
841 | char *buf) | |
842 | { | |
843 | struct mmc_card *card = mmc_dev_to_card(dev); | |
844 | struct mmc_host *host = card->host; | |
845 | ||
846 | if (card->csd.dsr_imp && host->dsr_req) | |
f5d8a5fe | 847 | return sysfs_emit(buf, "0x%x\n", host->dsr); |
6825a606 BP |
848 | else |
849 | /* return default DSR value */ | |
f5d8a5fe | 850 | return sysfs_emit(buf, "0x%x\n", 0x404); |
6825a606 BP |
851 | } |
852 | ||
853 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); | |
854 | ||
51ec92e2 PO |
855 | static struct attribute *mmc_std_attrs[] = { |
856 | &dev_attr_cid.attr, | |
857 | &dev_attr_csd.attr, | |
858 | &dev_attr_date.attr, | |
dfe86cba AH |
859 | &dev_attr_erase_size.attr, |
860 | &dev_attr_preferred_erase_size.attr, | |
e4df56ad | 861 | &dev_attr_wp_grp_size.attr, |
51ec92e2 | 862 | &dev_attr_fwrev.attr, |
0f762426 | 863 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
864 | &dev_attr_hwrev.attr, |
865 | &dev_attr_manfid.attr, | |
866 | &dev_attr_name.attr, | |
867 | &dev_attr_oemid.attr, | |
51e7e8b6 | 868 | &dev_attr_prv.attr, |
04fa0540 | 869 | &dev_attr_rev.attr, |
46bc5c40 JL |
870 | &dev_attr_pre_eol_info.attr, |
871 | &dev_attr_life_time.attr, | |
51ec92e2 | 872 | &dev_attr_serial.attr, |
709de99d CD |
873 | &dev_attr_enhanced_area_offset.attr, |
874 | &dev_attr_enhanced_area_size.attr, | |
188cc042 | 875 | &dev_attr_raw_rpmb_size_mult.attr, |
064f7e58 | 876 | &dev_attr_enhanced_rpmb_supported.attr, |
188cc042 | 877 | &dev_attr_rel_sectors.attr, |
5fb06af7 | 878 | &dev_attr_ocr.attr, |
974e85e9 | 879 | &dev_attr_rca.attr, |
6825a606 | 880 | &dev_attr_dsr.attr, |
b658af71 | 881 | &dev_attr_cmdq_en.attr, |
51ec92e2 PO |
882 | NULL, |
883 | }; | |
d1e58212 | 884 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 | 885 | |
68f5630a | 886 | static const struct device_type mmc_type = { |
d1e58212 | 887 | .groups = mmc_std_groups, |
51ec92e2 PO |
888 | }; |
889 | ||
b87d8dbf G |
890 | /* |
891 | * Select the PowerClass for the current bus width | |
892 | * If power class is defined for 4/8 bit bus in the | |
893 | * extended CSD register, select it by executing the | |
894 | * mmc_switch command. | |
895 | */ | |
2385049d SJ |
896 | static int __mmc_select_powerclass(struct mmc_card *card, |
897 | unsigned int bus_width) | |
b87d8dbf | 898 | { |
2385049d SJ |
899 | struct mmc_host *host = card->host; |
900 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 901 | unsigned int pwrclass_val = 0; |
2385049d | 902 | int err = 0; |
b87d8dbf | 903 | |
b87d8dbf G |
904 | switch (1 << host->ios.vdd) { |
905 | case MMC_VDD_165_195: | |
2385049d SJ |
906 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
907 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
908 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 909 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
910 | ext_csd->raw_pwr_cl_52_195 : |
911 | ext_csd->raw_pwr_cl_ddr_52_195; | |
912 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
913 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 914 | break; |
93fc5a47 SJ |
915 | case MMC_VDD_27_28: |
916 | case MMC_VDD_28_29: | |
917 | case MMC_VDD_29_30: | |
918 | case MMC_VDD_30_31: | |
919 | case MMC_VDD_31_32: | |
b87d8dbf G |
920 | case MMC_VDD_32_33: |
921 | case MMC_VDD_33_34: | |
922 | case MMC_VDD_34_35: | |
923 | case MMC_VDD_35_36: | |
2385049d SJ |
924 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
925 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
926 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 927 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
928 | ext_csd->raw_pwr_cl_52_360 : |
929 | ext_csd->raw_pwr_cl_ddr_52_360; | |
930 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
931 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
932 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
933 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
934 | break; |
935 | default: | |
6606110d JP |
936 | pr_warn("%s: Voltage range not supported for power class\n", |
937 | mmc_hostname(host)); | |
b87d8dbf G |
938 | return -EINVAL; |
939 | } | |
940 | ||
b87d8dbf G |
941 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
942 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
943 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
944 | else | |
945 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
946 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
947 | ||
948 | /* If the power class is different from the default value */ | |
949 | if (pwrclass_val > 0) { | |
950 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
951 | EXT_CSD_POWER_CLASS, | |
952 | pwrclass_val, | |
71fe3eb0 | 953 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
954 | } |
955 | ||
956 | return err; | |
957 | } | |
958 | ||
2385049d SJ |
959 | static int mmc_select_powerclass(struct mmc_card *card) |
960 | { | |
961 | struct mmc_host *host = card->host; | |
962 | u32 bus_width, ext_csd_bits; | |
963 | int err, ddr; | |
964 | ||
965 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 966 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
967 | return 0; |
968 | ||
969 | bus_width = host->ios.bus_width; | |
970 | /* Power class values are defined only for 4/8 bit bus */ | |
971 | if (bus_width == MMC_BUS_WIDTH_1) | |
972 | return 0; | |
973 | ||
974 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
975 | if (ddr) | |
976 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
977 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
978 | else | |
979 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
980 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
981 | ||
982 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
983 | if (err) | |
984 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
985 | mmc_hostname(host), 1 << bus_width, ddr); | |
986 | ||
987 | return err; | |
988 | } | |
989 | ||
a4924c71 | 990 | /* |
577fb131 | 991 | * Set the bus speed for the selected speed mode. |
a4924c71 | 992 | */ |
577fb131 SJ |
993 | static void mmc_set_bus_speed(struct mmc_card *card) |
994 | { | |
995 | unsigned int max_dtr = (unsigned int)-1; | |
996 | ||
0a5b6438 SJ |
997 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
998 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
999 | max_dtr = card->ext_csd.hs200_max_dtr; |
1000 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
1001 | max_dtr = card->ext_csd.hs_max_dtr; | |
1002 | else if (max_dtr > card->csd.max_dtr) | |
1003 | max_dtr = card->csd.max_dtr; | |
1004 | ||
1005 | mmc_set_clock(card->host, max_dtr); | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
1010 | * If the bus width is changed successfully, return the selected width value. | |
1011 | * Zero is returned instead of error value if the wide width is not supported. | |
1012 | */ | |
1013 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 1014 | { |
a4924c71 | 1015 | static unsigned ext_csd_bits[] = { |
a4924c71 | 1016 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 1017 | EXT_CSD_BUS_WIDTH_4, |
ff3206d2 | 1018 | EXT_CSD_BUS_WIDTH_1, |
a4924c71 G |
1019 | }; |
1020 | static unsigned bus_widths[] = { | |
a4924c71 | 1021 | MMC_BUS_WIDTH_8, |
577fb131 | 1022 | MMC_BUS_WIDTH_4, |
ff3206d2 | 1023 | MMC_BUS_WIDTH_1, |
a4924c71 | 1024 | }; |
577fb131 SJ |
1025 | struct mmc_host *host = card->host; |
1026 | unsigned idx, bus_width = 0; | |
1027 | int err = 0; | |
a4924c71 | 1028 | |
1c2d26e3 | 1029 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
1030 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
1031 | return 0; | |
a4924c71 | 1032 | |
577fb131 | 1033 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
1034 | |
1035 | /* | |
1036 | * Unlike SD, MMC cards dont have a configuration register to notify | |
1037 | * supported bus width. So bus test command should be run to identify | |
1038 | * the supported bus width or compare the ext csd values of current | |
1039 | * bus width and ext csd values of 1 bit mode read earlier. | |
1040 | */ | |
577fb131 | 1041 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
1042 | /* |
1043 | * Host is capable of 8bit transfer, then switch | |
1044 | * the device to work in 8bit transfer mode. If the | |
1045 | * mmc switch command returns error then switch to | |
1046 | * 4bit transfer mode. On success set the corresponding | |
1047 | * bus width on the host. | |
1048 | */ | |
1049 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1050 | EXT_CSD_BUS_WIDTH, | |
1051 | ext_csd_bits[idx], | |
1052 | card->ext_csd.generic_cmd6_time); | |
1053 | if (err) | |
1054 | continue; | |
1055 | ||
577fb131 SJ |
1056 | bus_width = bus_widths[idx]; |
1057 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 1058 | |
577fb131 SJ |
1059 | /* |
1060 | * If controller can't handle bus width test, | |
1061 | * compare ext_csd previously read in 1 bit mode | |
1062 | * against ext_csd at new bus width | |
1063 | */ | |
a4924c71 | 1064 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 1065 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 1066 | else |
577fb131 SJ |
1067 | err = mmc_bus_test(card, bus_width); |
1068 | ||
1069 | if (!err) { | |
1070 | err = bus_width; | |
a4924c71 | 1071 | break; |
577fb131 SJ |
1072 | } else { |
1073 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 1074 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 1075 | } |
a4924c71 G |
1076 | } |
1077 | ||
577fb131 SJ |
1078 | return err; |
1079 | } | |
1080 | ||
1081 | /* | |
1082 | * Switch to the high-speed mode | |
1083 | */ | |
1084 | static int mmc_select_hs(struct mmc_card *card) | |
1085 | { | |
1086 | int err; | |
1087 | ||
1088 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1089 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
53e60650 | 1090 | card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, |
5e52a168 | 1091 | true, true, MMC_CMD_RETRIES); |
67d35960 JL |
1092 | if (err) |
1093 | pr_warn("%s: switch to high-speed failed, err:%d\n", | |
1094 | mmc_hostname(card->host), err); | |
1095 | ||
577fb131 SJ |
1096 | return err; |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * Activate wide bus and DDR if supported. | |
1101 | */ | |
1102 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1103 | { | |
1104 | struct mmc_host *host = card->host; | |
1105 | u32 bus_width, ext_csd_bits; | |
1106 | int err = 0; | |
1107 | ||
1108 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1109 | return 0; | |
1110 | ||
1111 | bus_width = host->ios.bus_width; | |
1112 | if (bus_width == MMC_BUS_WIDTH_1) | |
1113 | return 0; | |
1114 | ||
1115 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1116 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1117 | ||
e173f891 UH |
1118 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1119 | EXT_CSD_BUS_WIDTH, | |
1120 | ext_csd_bits, | |
1121 | card->ext_csd.generic_cmd6_time, | |
1122 | MMC_TIMING_MMC_DDR52, | |
5e52a168 | 1123 | true, true, MMC_CMD_RETRIES); |
577fb131 | 1124 | if (err) { |
4b75bffc | 1125 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1126 | mmc_hostname(host), 1 << bus_width); |
1127 | return err; | |
1128 | } | |
1129 | ||
1130 | /* | |
1131 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1132 | * signaling. | |
1133 | * | |
1134 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1135 | * | |
1136 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1137 | * in the JEDEC spec for DDR. | |
1138 | * | |
312449ef CD |
1139 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1140 | * host controller can support this, like some of the SDHCI | |
1141 | * controller which connect to an eMMC device. Some of these | |
1142 | * host controller still needs to use 1.8v vccq for supporting | |
1143 | * DDR mode. | |
1144 | * | |
1145 | * So the sequence will be: | |
1146 | * if (host and device can both support 1.2v IO) | |
1147 | * use 1.2v IO; | |
1148 | * else if (host and device can both support 1.8v IO) | |
1149 | * use 1.8v IO; | |
1150 | * so if host and device can only support 3.3v IO, this is the | |
1151 | * last choice. | |
577fb131 SJ |
1152 | * |
1153 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1154 | */ | |
20f921bb | 1155 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { |
4e74b6b3 | 1156 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
20f921bb UH |
1157 | if (!err) |
1158 | return 0; | |
1159 | } | |
577fb131 | 1160 | |
20f921bb UH |
1161 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && |
1162 | host->caps & MMC_CAP_1_8V_DDR) | |
4e74b6b3 | 1163 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
312449ef CD |
1164 | |
1165 | /* make sure vccq is 3.3v after switching disaster */ | |
1166 | if (err) | |
4e74b6b3 | 1167 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); |
312449ef | 1168 | |
577fb131 SJ |
1169 | return err; |
1170 | } | |
1171 | ||
0a5b6438 SJ |
1172 | static int mmc_select_hs400(struct mmc_card *card) |
1173 | { | |
1174 | struct mmc_host *host = card->host; | |
51b12f77 | 1175 | unsigned int max_dtr; |
0a5b6438 | 1176 | int err = 0; |
cc4f414c | 1177 | u8 val; |
0a5b6438 SJ |
1178 | |
1179 | /* | |
1180 | * HS400 mode requires 8-bit bus width | |
1181 | */ | |
1182 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1183 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1184 | return 0; | |
1185 | ||
51b12f77 | 1186 | /* Switch card to HS mode */ |
adb24d42 | 1187 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1188 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1189 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1190 | card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1191 | false, true, MMC_CMD_RETRIES); |
0a5b6438 | 1192 | if (err) { |
4b75bffc | 1193 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1194 | mmc_hostname(host), err); |
1195 | return err; | |
1196 | } | |
1197 | ||
ba6c7ac3 SH |
1198 | /* Prepare host to downgrade to HS timing */ |
1199 | if (host->ops->hs400_downgrade) | |
1200 | host->ops->hs400_downgrade(host); | |
1201 | ||
24fdcb37 | 1202 | /* Set host controller to HS timing */ |
452f553e | 1203 | mmc_set_timing(host, MMC_TIMING_MMC_HS); |
24fdcb37 | 1204 | |
649c6059 ZX |
1205 | /* Reduce frequency to HS frequency */ |
1206 | max_dtr = card->ext_csd.hs_max_dtr; | |
1207 | mmc_set_clock(host, max_dtr); | |
1208 | ||
60db8a47 | 1209 | err = mmc_switch_status(card, true); |
08573eaf CJ |
1210 | if (err) |
1211 | goto out_err; | |
d2302933 | 1212 | |
cc14eec0 YZ |
1213 | if (host->ops->hs400_prepare_ddr) |
1214 | host->ops->hs400_prepare_ddr(host); | |
1215 | ||
d2302933 | 1216 | /* Switch card to DDR */ |
0a5b6438 SJ |
1217 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1218 | EXT_CSD_BUS_WIDTH, | |
1219 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1220 | card->ext_csd.generic_cmd6_time); | |
1221 | if (err) { | |
4b75bffc | 1222 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1223 | mmc_hostname(host), err); |
1224 | return err; | |
1225 | } | |
1226 | ||
d2302933 | 1227 | /* Switch card to HS400 */ |
cc4f414c AH |
1228 | val = EXT_CSD_TIMING_HS400 | |
1229 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1230 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1231 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1232 | card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1233 | false, true, MMC_CMD_RETRIES); |
0a5b6438 | 1234 | if (err) { |
4b75bffc | 1235 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1236 | mmc_hostname(host), err); |
1237 | return err; | |
1238 | } | |
1239 | ||
d2302933 | 1240 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1241 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1242 | mmc_set_bus_speed(card); | |
1243 | ||
f614fb60 WM |
1244 | if (host->ops->execute_hs400_tuning) { |
1245 | mmc_retune_disable(host); | |
1246 | err = host->ops->execute_hs400_tuning(host, card); | |
1247 | mmc_retune_enable(host); | |
1248 | if (err) | |
1249 | goto out_err; | |
1250 | } | |
1251 | ||
b0e370b9 WS |
1252 | if (host->ops->hs400_complete) |
1253 | host->ops->hs400_complete(host); | |
1254 | ||
60db8a47 | 1255 | err = mmc_switch_status(card, true); |
08573eaf CJ |
1256 | if (err) |
1257 | goto out_err; | |
d2302933 | 1258 | |
0a5b6438 | 1259 | return 0; |
d2302933 AH |
1260 | |
1261 | out_err: | |
1262 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1263 | __func__, err); | |
1264 | return err; | |
0a5b6438 SJ |
1265 | } |
1266 | ||
6376f69d AH |
1267 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1268 | { | |
1269 | return mmc_select_hs400(card); | |
1270 | } | |
1271 | ||
6376f69d AH |
1272 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1273 | { | |
1274 | struct mmc_host *host = card->host; | |
6376f69d AH |
1275 | unsigned int max_dtr; |
1276 | int err; | |
cc4f414c | 1277 | u8 val; |
6376f69d | 1278 | |
6376f69d AH |
1279 | /* Reduce frequency to HS */ |
1280 | max_dtr = card->ext_csd.hs_max_dtr; | |
1281 | mmc_set_clock(host, max_dtr); | |
1282 | ||
1283 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1284 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1285 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1286 | val, card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1287 | false, true, MMC_CMD_RETRIES); |
6376f69d AH |
1288 | if (err) |
1289 | goto out_err; | |
1290 | ||
24fdcb37 WS |
1291 | if (host->ops->hs400_downgrade) |
1292 | host->ops->hs400_downgrade(host); | |
1293 | ||
6376f69d AH |
1294 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); |
1295 | ||
60db8a47 | 1296 | err = mmc_switch_status(card, true); |
08573eaf CJ |
1297 | if (err) |
1298 | goto out_err; | |
6376f69d AH |
1299 | |
1300 | /* Switch HS DDR to HS */ | |
1301 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1302 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
5e52a168 | 1303 | 0, false, true, MMC_CMD_RETRIES); |
6376f69d AH |
1304 | if (err) |
1305 | goto out_err; | |
1306 | ||
1307 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1308 | ||
60db8a47 | 1309 | err = mmc_switch_status(card, true); |
08573eaf CJ |
1310 | if (err) |
1311 | goto out_err; | |
6376f69d AH |
1312 | |
1313 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1314 | val = EXT_CSD_TIMING_HS200 | |
1315 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1316 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1317 | val, card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1318 | false, true, MMC_CMD_RETRIES); |
6376f69d AH |
1319 | if (err) |
1320 | goto out_err; | |
1321 | ||
1322 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1323 | ||
ef3d2322 AH |
1324 | /* |
1325 | * For HS200, CRC errors are not a reliable way to know the switch | |
1326 | * failed. If there really is a problem, we would expect tuning will | |
1327 | * fail and the result ends up the same. | |
1328 | */ | |
60db8a47 | 1329 | err = mmc_switch_status(card, false); |
08573eaf CJ |
1330 | if (err) |
1331 | goto out_err; | |
6376f69d AH |
1332 | |
1333 | mmc_set_bus_speed(card); | |
1334 | ||
c8a4e30d UH |
1335 | /* Prepare tuning for HS400 mode. */ |
1336 | if (host->ops->prepare_hs400_tuning) | |
1337 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1338 | ||
6376f69d AH |
1339 | return 0; |
1340 | ||
1341 | out_err: | |
1342 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1343 | __func__, err); | |
1344 | return err; | |
1345 | } | |
1346 | ||
fb458864 CM |
1347 | static void mmc_select_driver_type(struct mmc_card *card) |
1348 | { | |
be17f1ce | 1349 | int card_drv_type, drive_strength, drv_type = 0; |
6186d06c | 1350 | int fixed_drv_type = card->host->fixed_drv_type; |
fb458864 CM |
1351 | |
1352 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1353 | mmc_driver_type_mask(0); | |
1354 | ||
6186d06c WS |
1355 | if (fixed_drv_type >= 0) |
1356 | drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) | |
1357 | ? fixed_drv_type : 0; | |
1358 | else | |
1359 | drive_strength = mmc_select_drive_strength(card, | |
1360 | card->ext_csd.hs200_max_dtr, | |
1361 | card_drv_type, &drv_type); | |
fb458864 CM |
1362 | |
1363 | card->drive_strength = drive_strength; | |
1364 | ||
1365 | if (drv_type) | |
1366 | mmc_set_driver_type(card->host, drv_type); | |
1367 | } | |
1368 | ||
81ac2af6 SL |
1369 | static int mmc_select_hs400es(struct mmc_card *card) |
1370 | { | |
1371 | struct mmc_host *host = card->host; | |
92ddd959 | 1372 | int err = -EINVAL; |
81ac2af6 SL |
1373 | u8 val; |
1374 | ||
1720d354 | 1375 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) |
4e74b6b3 | 1376 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
1720d354 SL |
1377 | |
1378 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) | |
4e74b6b3 | 1379 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
1720d354 SL |
1380 | |
1381 | /* If fails try again during next card power cycle */ | |
1382 | if (err) | |
1383 | goto out_err; | |
1384 | ||
81ac2af6 | 1385 | err = mmc_select_bus_width(card); |
7f38abf2 HF |
1386 | if (err != MMC_BUS_WIDTH_8) { |
1387 | pr_err("%s: switch to 8bit bus width failed, err:%d\n", | |
1388 | mmc_hostname(host), err); | |
1389 | err = err < 0 ? err : -ENOTSUPP; | |
81ac2af6 | 1390 | goto out_err; |
7f38abf2 | 1391 | } |
81ac2af6 SL |
1392 | |
1393 | /* Switch card to HS mode */ | |
53e60650 UH |
1394 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1395 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1396 | card->ext_csd.generic_cmd6_time, 0, | |
5e52a168 | 1397 | false, true, MMC_CMD_RETRIES); |
53e60650 UH |
1398 | if (err) { |
1399 | pr_err("%s: switch to hs for hs400es failed, err:%d\n", | |
1400 | mmc_hostname(host), err); | |
81ac2af6 | 1401 | goto out_err; |
53e60650 | 1402 | } |
81ac2af6 | 1403 | |
4bc31ede BN |
1404 | /* |
1405 | * Bump to HS timing and frequency. Some cards don't handle | |
1406 | * SEND_STATUS reliably at the initial frequency. | |
1407 | */ | |
53e60650 | 1408 | mmc_set_timing(host, MMC_TIMING_MMC_HS); |
4bc31ede BN |
1409 | mmc_set_bus_speed(card); |
1410 | ||
60db8a47 | 1411 | err = mmc_switch_status(card, true); |
81ac2af6 SL |
1412 | if (err) |
1413 | goto out_err; | |
1414 | ||
1415 | /* Switch card to DDR with strobe bit */ | |
1416 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1417 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1418 | EXT_CSD_BUS_WIDTH, | |
1419 | val, | |
1420 | card->ext_csd.generic_cmd6_time); | |
1421 | if (err) { | |
1422 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1423 | mmc_hostname(host), err); | |
1424 | goto out_err; | |
1425 | } | |
1426 | ||
fb458864 CM |
1427 | mmc_select_driver_type(card); |
1428 | ||
81ac2af6 SL |
1429 | /* Switch card to HS400 */ |
1430 | val = EXT_CSD_TIMING_HS400 | | |
1431 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1432 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1433 | EXT_CSD_HS_TIMING, val, | |
aa33ce3c | 1434 | card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1435 | false, true, MMC_CMD_RETRIES); |
81ac2af6 SL |
1436 | if (err) { |
1437 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1438 | mmc_hostname(host), err); | |
1439 | goto out_err; | |
1440 | } | |
1441 | ||
1442 | /* Set host controller to HS400 timing and frequency */ | |
1443 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1444 | ||
1445 | /* Controller enable enhanced strobe function */ | |
1446 | host->ios.enhanced_strobe = true; | |
1447 | if (host->ops->hs400_enhanced_strobe) | |
1448 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1449 | ||
60db8a47 | 1450 | err = mmc_switch_status(card, true); |
81ac2af6 SL |
1451 | if (err) |
1452 | goto out_err; | |
1453 | ||
1454 | return 0; | |
1455 | ||
1456 | out_err: | |
1457 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1458 | __func__, err); | |
1459 | return err; | |
1460 | } | |
1461 | ||
577fb131 SJ |
1462 | /* |
1463 | * For device supporting HS200 mode, the following sequence | |
1464 | * should be done before executing the tuning process. | |
1465 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1466 | * 2. switch to HS200 mode | |
1467 | * 3. set the clock to > 52Mhz and <=200MHz | |
1468 | */ | |
1469 | static int mmc_select_hs200(struct mmc_card *card) | |
1470 | { | |
1471 | struct mmc_host *host = card->host; | |
4bc31ede | 1472 | unsigned int old_timing, old_signal_voltage, old_clock; |
577fb131 | 1473 | int err = -EINVAL; |
cc4f414c | 1474 | u8 val; |
577fb131 | 1475 | |
e51534c8 | 1476 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 | 1477 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
4e74b6b3 | 1478 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
577fb131 SJ |
1479 | |
1480 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
4e74b6b3 | 1481 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
577fb131 SJ |
1482 | |
1483 | /* If fails try again during next card power cycle */ | |
1484 | if (err) | |
e51534c8 | 1485 | return err; |
577fb131 | 1486 | |
cc4f414c AH |
1487 | mmc_select_driver_type(card); |
1488 | ||
577fb131 SJ |
1489 | /* |
1490 | * Set the bus width(4 or 8) with host's support and | |
1491 | * switch to HS200 mode if bus width is set successfully. | |
1492 | */ | |
1493 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1494 | if (err > 0) { |
cc4f414c AH |
1495 | val = EXT_CSD_TIMING_HS200 | |
1496 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1497 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1498 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1499 | card->ext_csd.generic_cmd6_time, 0, |
5e52a168 | 1500 | false, true, MMC_CMD_RETRIES); |
1815e61b AH |
1501 | if (err) |
1502 | goto err; | |
4bc31ede BN |
1503 | |
1504 | /* | |
1505 | * Bump to HS timing and frequency. Some cards don't handle | |
1506 | * SEND_STATUS reliably at the initial frequency. | |
1507 | * NB: We can't move to full (HS200) speeds until after we've | |
1508 | * successfully switched over. | |
1509 | */ | |
1815e61b | 1510 | old_timing = host->ios.timing; |
4bc31ede | 1511 | old_clock = host->ios.clock; |
1815e61b | 1512 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); |
4bc31ede | 1513 | mmc_set_clock(card->host, card->ext_csd.hs_max_dtr); |
08573eaf | 1514 | |
ef3d2322 AH |
1515 | /* |
1516 | * For HS200, CRC errors are not a reliable way to know the | |
1517 | * switch failed. If there really is a problem, we would expect | |
1518 | * tuning will fail and the result ends up the same. | |
1519 | */ | |
60db8a47 | 1520 | err = mmc_switch_status(card, false); |
ef3d2322 | 1521 | |
08573eaf CJ |
1522 | /* |
1523 | * mmc_select_timing() assumes timing has not changed if | |
1524 | * it is a switch error. | |
1525 | */ | |
4bc31ede BN |
1526 | if (err == -EBADMSG) { |
1527 | mmc_set_clock(host, old_clock); | |
08573eaf | 1528 | mmc_set_timing(host, old_timing); |
4bc31ede | 1529 | } |
577fb131 | 1530 | } |
a4924c71 | 1531 | err: |
e51534c8 DA |
1532 | if (err) { |
1533 | /* fall back to the old signal voltage, if fails report error */ | |
4e74b6b3 | 1534 | if (mmc_set_signal_voltage(host, old_signal_voltage)) |
e51534c8 DA |
1535 | err = -EIO; |
1536 | ||
1815e61b AH |
1537 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1538 | __func__, err); | |
e51534c8 | 1539 | } |
a4924c71 G |
1540 | return err; |
1541 | } | |
1542 | ||
577fb131 | 1543 | /* |
81ac2af6 | 1544 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1545 | */ |
1546 | static int mmc_select_timing(struct mmc_card *card) | |
1547 | { | |
1548 | int err = 0; | |
1549 | ||
148bcab2 | 1550 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1551 | goto bus_speed; |
1552 | ||
3b6c4728 | 1553 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) { |
81ac2af6 | 1554 | err = mmc_select_hs400es(card); |
3b6c4728 UH |
1555 | goto out; |
1556 | } | |
1557 | ||
1558 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) { | |
577fb131 | 1559 | err = mmc_select_hs200(card); |
3b6c4728 UH |
1560 | if (err == -EBADMSG) |
1561 | card->mmc_avail_type &= ~EXT_CSD_CARD_TYPE_HS200; | |
1562 | else | |
1563 | goto out; | |
1564 | } | |
1565 | ||
1566 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
577fb131 SJ |
1567 | err = mmc_select_hs(card); |
1568 | ||
3b6c4728 | 1569 | out: |
577fb131 SJ |
1570 | if (err && err != -EBADMSG) |
1571 | return err; | |
1572 | ||
577fb131 SJ |
1573 | bus_speed: |
1574 | /* | |
1575 | * Set the bus speed to the selected bus timing. | |
1576 | * If timing is not selected, backward compatible is the default. | |
1577 | */ | |
1578 | mmc_set_bus_speed(card); | |
0400ed0a | 1579 | return 0; |
577fb131 SJ |
1580 | } |
1581 | ||
1582 | /* | |
1583 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1584 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1585 | */ |
1586 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1587 | { | |
1588 | struct mmc_host *host = card->host; | |
577fb131 | 1589 | |
0a5b6438 SJ |
1590 | /* |
1591 | * Timing should be adjusted to the HS400 target | |
1592 | * operation frequency for tuning process | |
1593 | */ | |
1594 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1595 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1596 | if (host->ops->prepare_hs400_tuning) | |
1597 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1598 | ||
63e415c6 | 1599 | return mmc_execute_tuning(card); |
577fb131 SJ |
1600 | } |
1601 | ||
7ea239d9 | 1602 | /* |
6abaa0c9 PO |
1603 | * Handle the detection and initialisation of a card. |
1604 | * | |
8769392b | 1605 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1606 | * we're trying to reinitialise. |
7ea239d9 | 1607 | */ |
8c75deae | 1608 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1609 | struct mmc_card *oldcard) |
7ea239d9 PO |
1610 | { |
1611 | struct mmc_card *card; | |
577fb131 | 1612 | int err; |
7ea239d9 | 1613 | u32 cid[4]; |
b676f039 | 1614 | u32 rocr; |
7ea239d9 | 1615 | |
d84075c8 | 1616 | WARN_ON(!host->claimed); |
7ea239d9 | 1617 | |
44669034 SNX |
1618 | /* Set correct bus mode for MMC before attempting init */ |
1619 | if (!mmc_host_is_spi(host)) | |
1620 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1621 | ||
7ea239d9 PO |
1622 | /* |
1623 | * Since we're changing the OCR value, we seem to | |
1624 | * need to tell some cards to go back to the idle | |
1625 | * state. We wait 1ms to give cards time to | |
1626 | * respond. | |
c3805467 | 1627 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1628 | */ |
1629 | mmc_go_idle(host); | |
1630 | ||
1631 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1632 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1633 | if (err) |
6abaa0c9 | 1634 | goto err; |
7ea239d9 | 1635 | |
af517150 DB |
1636 | /* |
1637 | * For SPI, enable CRC as appropriate. | |
1638 | */ | |
1639 | if (mmc_host_is_spi(host)) { | |
1640 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1641 | if (err) | |
1642 | goto err; | |
1643 | } | |
1644 | ||
7ea239d9 PO |
1645 | /* |
1646 | * Fetch CID from card. | |
1647 | */ | |
a1473732 | 1648 | err = mmc_send_cid(host, cid); |
17b0429d | 1649 | if (err) |
7ea239d9 PO |
1650 | goto err; |
1651 | ||
6abaa0c9 | 1652 | if (oldcard) { |
adf66a0d | 1653 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
099b6481 | 1654 | pr_debug("%s: Perhaps the card was replaced\n", |
1655 | mmc_hostname(host)); | |
adf66a0d | 1656 | err = -ENOENT; |
6abaa0c9 | 1657 | goto err; |
adf66a0d | 1658 | } |
6abaa0c9 PO |
1659 | |
1660 | card = oldcard; | |
1661 | } else { | |
1662 | /* | |
1663 | * Allocate card structure. | |
1664 | */ | |
51ec92e2 | 1665 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1666 | if (IS_ERR(card)) { |
1667 | err = PTR_ERR(card); | |
6abaa0c9 | 1668 | goto err; |
adf66a0d | 1669 | } |
7ea239d9 | 1670 | |
69041150 | 1671 | card->ocr = ocr; |
6abaa0c9 PO |
1672 | card->type = MMC_TYPE_MMC; |
1673 | card->rca = 1; | |
1674 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1675 | } | |
7ea239d9 | 1676 | |
eac86321 DA |
1677 | /* |
1678 | * Call the optional HC's init_card function to handle quirks. | |
1679 | */ | |
1680 | if (host->ops->init_card) | |
1681 | host->ops->init_card(host, card); | |
1682 | ||
7ea239d9 | 1683 | /* |
af517150 | 1684 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1685 | */ |
af517150 DB |
1686 | if (!mmc_host_is_spi(host)) { |
1687 | err = mmc_set_relative_addr(card); | |
1688 | if (err) | |
1689 | goto free_card; | |
7ea239d9 | 1690 | |
af517150 DB |
1691 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1692 | } | |
7ea239d9 | 1693 | |
6abaa0c9 PO |
1694 | if (!oldcard) { |
1695 | /* | |
1696 | * Fetch CSD from card. | |
1697 | */ | |
1698 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1699 | if (err) |
6abaa0c9 | 1700 | goto free_card; |
7ea239d9 | 1701 | |
bd766312 | 1702 | err = mmc_decode_csd(card); |
adf66a0d | 1703 | if (err) |
bd766312 PO |
1704 | goto free_card; |
1705 | err = mmc_decode_cid(card); | |
adf66a0d | 1706 | if (err) |
bd766312 | 1707 | goto free_card; |
6abaa0c9 | 1708 | } |
7ea239d9 | 1709 | |
3d705d14 SH |
1710 | /* |
1711 | * handling only for cards supporting DSR and hosts requesting | |
1712 | * DSR configuration | |
1713 | */ | |
1714 | if (card->csd.dsr_imp && host->dsr_req) | |
1715 | mmc_set_dsr(host); | |
1716 | ||
7ea239d9 | 1717 | /* |
89a73cf5 | 1718 | * Select card, as all following commands rely on that. |
7ea239d9 | 1719 | */ |
af517150 DB |
1720 | if (!mmc_host_is_spi(host)) { |
1721 | err = mmc_select_card(card); | |
1722 | if (err) | |
1723 | goto free_card; | |
1724 | } | |
7ea239d9 | 1725 | |
6abaa0c9 | 1726 | if (!oldcard) { |
076ec38a UH |
1727 | /* Read extended CSD. */ |
1728 | err = mmc_read_ext_csd(card); | |
17b0429d | 1729 | if (err) |
6abaa0c9 | 1730 | goto free_card; |
b676f039 | 1731 | |
87e88659 MY |
1732 | /* |
1733 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1734 | * addressing. Handle the case of <2GB cards needing sector |
1735 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1736 | * ocr register has bit 30 set for sector addressing. | |
1737 | */ | |
87e88659 | 1738 | if (rocr & BIT(30)) |
b676f039 PR |
1739 | mmc_card_set_blockaddr(card); |
1740 | ||
dfe86cba AH |
1741 | /* Erase size depends on CSD and Extended CSD */ |
1742 | mmc_set_erase_size(card); | |
6abaa0c9 | 1743 | } |
7ea239d9 | 1744 | |
6fff35f0 VW |
1745 | /* |
1746 | * Reselect the card type since host caps could have been changed when | |
1747 | * debugging even if the card is not new. | |
1748 | */ | |
1749 | mmc_select_card_type(card); | |
1750 | ||
d2a47176 UH |
1751 | /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ |
1752 | if (card->ext_csd.rev >= 3) { | |
709de99d | 1753 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1754 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1755 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1756 | |
1757 | if (err && err != -EBADMSG) | |
1758 | goto free_card; | |
1759 | ||
1760 | if (err) { | |
709de99d CD |
1761 | /* |
1762 | * Just disable enhanced area off & sz | |
1763 | * will try to enable ERASE_GROUP_DEF | |
1764 | * during next time reinit | |
1765 | */ | |
1766 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1767 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1768 | } else { | |
1769 | card->ext_csd.erase_group_def = 1; | |
1770 | /* | |
1771 | * enable ERASE_GRP_DEF successfully. | |
1772 | * This will affect the erase size, so | |
1773 | * here need to reset erase size | |
1774 | */ | |
1775 | mmc_set_erase_size(card); | |
1776 | } | |
1777 | } | |
e4df56ad | 1778 | mmc_set_wp_grp_size(card); |
41e2a489 PR |
1779 | /* |
1780 | * Ensure eMMC user default partition is enabled | |
1781 | */ | |
371a689f AW |
1782 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1783 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1784 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1785 | card->ext_csd.part_config, | |
1786 | card->ext_csd.part_time); | |
1787 | if (err && err != -EBADMSG) | |
1788 | goto free_card; | |
41e2a489 PR |
1789 | } |
1790 | ||
bec8726a | 1791 | /* |
43235679 | 1792 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1793 | */ |
43235679 | 1794 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1795 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1796 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1797 | EXT_CSD_POWER_ON, | |
1798 | card->ext_csd.generic_cmd6_time); | |
1799 | if (err && err != -EBADMSG) | |
1800 | goto free_card; | |
bec8726a | 1801 | |
96a85d54 G |
1802 | /* |
1803 | * The err can be -EBADMSG or 0, | |
1804 | * so check for success and update the flag | |
1805 | */ | |
1806 | if (!err) | |
e6c08586 | 1807 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1808 | } |
bec8726a | 1809 | |
01904ff7 AA |
1810 | /* set erase_arg */ |
1811 | if (mmc_can_discard(card)) | |
1812 | card->erase_arg = MMC_DISCARD_ARG; | |
1813 | else if (mmc_can_trim(card)) | |
1814 | card->erase_arg = MMC_TRIM_ARG; | |
1815 | else | |
1816 | card->erase_arg = MMC_ERASE_ARG; | |
1817 | ||
89a73cf5 | 1818 | /* |
577fb131 | 1819 | * Select timing interface |
dfc13e84 | 1820 | */ |
577fb131 SJ |
1821 | err = mmc_select_timing(card); |
1822 | if (err) | |
1823 | goto free_card; | |
dfc13e84 | 1824 | |
a4924c71 | 1825 | if (mmc_card_hs200(card)) { |
97a7d87e WS |
1826 | host->doing_init_tune = 1; |
1827 | ||
577fb131 | 1828 | err = mmc_hs200_tuning(card); |
878dbe42 WS |
1829 | if (!err) |
1830 | err = mmc_select_hs400(card); | |
1831 | ||
1832 | host->doing_init_tune = 0; | |
0a5b6438 | 1833 | |
0a5b6438 | 1834 | if (err) |
4b75bffc | 1835 | goto free_card; |
77e01b49 MZ |
1836 | } else if (mmc_card_hs400es(card)) { |
1837 | if (host->ops->execute_hs400_tuning) { | |
1838 | err = host->ops->execute_hs400_tuning(host, card); | |
1839 | if (err) | |
1840 | goto free_card; | |
1841 | } | |
1842 | } else { | |
577fb131 SJ |
1843 | /* Select the desired bus width optionally */ |
1844 | err = mmc_select_bus_width(card); | |
3d4ef329 | 1845 | if (err > 0 && mmc_card_hs(card)) { |
577fb131 SJ |
1846 | err = mmc_select_hs_ddr(card); |
1847 | if (err) | |
4b75bffc | 1848 | goto free_card; |
ef0b27d4 | 1849 | } |
89a73cf5 PO |
1850 | } |
1851 | ||
2385049d SJ |
1852 | /* |
1853 | * Choose the power class with selected bus interface | |
1854 | */ | |
1855 | mmc_select_powerclass(card); | |
1856 | ||
52d0974e SJ |
1857 | /* |
1858 | * Enable HPI feature (if supported) | |
1859 | */ | |
1860 | if (card->ext_csd.hpi) { | |
1861 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1862 | EXT_CSD_HPI_MGMT, 1, | |
1863 | card->ext_csd.generic_cmd6_time); | |
1864 | if (err && err != -EBADMSG) | |
1865 | goto free_card; | |
1866 | if (err) { | |
6606110d JP |
1867 | pr_warn("%s: Enabling HPI failed\n", |
1868 | mmc_hostname(card->host)); | |
a0741ba4 | 1869 | card->ext_csd.hpi_en = 0; |
a0741ba4 | 1870 | } else { |
52d0974e | 1871 | card->ext_csd.hpi_en = 1; |
a0741ba4 | 1872 | } |
52d0974e SJ |
1873 | } |
1874 | ||
881d1c25 | 1875 | /* |
e3ae3401 UH |
1876 | * If cache size is higher than 0, this indicates the existence of cache |
1877 | * and it can be turned on. Note that some eMMCs from Micron has been | |
1878 | * reported to need ~800 ms timeout, while enabling the cache after | |
1879 | * sudden power failure tests. Let's extend the timeout to a minimum of | |
1880 | * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. | |
881d1c25 | 1881 | */ |
ba9f39a7 | 1882 | if (card->ext_csd.cache_size > 0) { |
e3ae3401 UH |
1883 | unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; |
1884 | ||
1885 | timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); | |
881d1c25 | 1886 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
e3ae3401 | 1887 | EXT_CSD_CACHE_CTRL, 1, timeout_ms); |
881d1c25 SJ |
1888 | if (err && err != -EBADMSG) |
1889 | goto free_card; | |
1890 | ||
1891 | /* | |
1892 | * Only if no error, cache is turned on successfully. | |
1893 | */ | |
8bc0678b | 1894 | if (err) { |
6606110d JP |
1895 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1896 | mmc_hostname(card->host), err); | |
8bc0678b | 1897 | card->ext_csd.cache_ctrl = 0; |
8bc0678b SJ |
1898 | } else { |
1899 | card->ext_csd.cache_ctrl = 1; | |
1900 | } | |
881d1c25 SJ |
1901 | } |
1902 | ||
98d4f780 AH |
1903 | /* |
1904 | * Enable Command Queue if supported. Note that Packed Commands cannot | |
1905 | * be used with Command Queue. | |
1906 | */ | |
1907 | card->ext_csd.cmdq_en = false; | |
1908 | if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { | |
1909 | err = mmc_cmdq_enable(card); | |
1910 | if (err && err != -EBADMSG) | |
1911 | goto free_card; | |
1912 | if (err) { | |
1913 | pr_warn("%s: Enabling CMDQ failed\n", | |
1914 | mmc_hostname(card->host)); | |
1915 | card->ext_csd.cmdq_support = false; | |
1916 | card->ext_csd.cmdq_depth = 0; | |
98d4f780 AH |
1917 | } |
1918 | } | |
9d4579a8 AH |
1919 | /* |
1920 | * In some cases (e.g. RPMB or mmc_test), the Command Queue must be | |
1921 | * disabled for a time, so a flag is needed to indicate to re-enable the | |
1922 | * Command Queue. | |
1923 | */ | |
1924 | card->reenable_cmdq = card->ext_csd.cmdq_en; | |
1925 | ||
511ce378 | 1926 | if (host->cqe_ops && !host->cqe_enabled) { |
f690f440 | 1927 | err = host->cqe_ops->cqe_enable(host, card); |
511ce378 | 1928 | if (!err) { |
f690f440 | 1929 | host->cqe_enabled = true; |
511ce378 BW |
1930 | |
1931 | if (card->ext_csd.cmdq_en) { | |
1932 | pr_info("%s: Command Queue Engine enabled\n", | |
1933 | mmc_hostname(host)); | |
1934 | } else { | |
1935 | host->hsq_enabled = true; | |
1936 | pr_info("%s: Host Software Queue enabled\n", | |
1937 | mmc_hostname(host)); | |
1938 | } | |
f690f440 AH |
1939 | } |
1940 | } | |
1941 | ||
247cfe53 KR |
1942 | if (host->caps2 & MMC_CAP2_AVOID_3_3V && |
1943 | host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { | |
1944 | pr_err("%s: Host failed to negotiate down from 3.3V\n", | |
1945 | mmc_hostname(host)); | |
1946 | err = -EINVAL; | |
1947 | goto free_card; | |
1948 | } | |
1949 | ||
6abaa0c9 PO |
1950 | if (!oldcard) |
1951 | host->card = card; | |
1952 | ||
17b0429d | 1953 | return 0; |
6abaa0c9 PO |
1954 | |
1955 | free_card: | |
1956 | if (!oldcard) | |
1957 | mmc_remove_card(card); | |
1958 | err: | |
adf66a0d | 1959 | return err; |
6abaa0c9 PO |
1960 | } |
1961 | ||
07a68216 UH |
1962 | static int mmc_can_sleep(struct mmc_card *card) |
1963 | { | |
783667cc | 1964 | return card->ext_csd.rev >= 3; |
07a68216 UH |
1965 | } |
1966 | ||
6fa79651 UH |
1967 | static int mmc_sleep_busy_cb(void *cb_data, bool *busy) |
1968 | { | |
1969 | struct mmc_host *host = cb_data; | |
1970 | ||
1971 | *busy = host->ops->card_busy(host); | |
1972 | return 0; | |
1973 | } | |
1974 | ||
07a68216 UH |
1975 | static int mmc_sleep(struct mmc_host *host) |
1976 | { | |
c7836d15 | 1977 | struct mmc_command cmd = {}; |
07a68216 | 1978 | struct mmc_card *card = host->card; |
cb962e04 | 1979 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
e62f1e0b | 1980 | bool use_r1b_resp; |
07a68216 UH |
1981 | int err; |
1982 | ||
436f8daa AH |
1983 | /* Re-tuning can't be done once the card is deselected */ |
1984 | mmc_retune_hold(host); | |
1985 | ||
07a68216 UH |
1986 | err = mmc_deselect_cards(host); |
1987 | if (err) | |
436f8daa | 1988 | goto out_release; |
07a68216 UH |
1989 | |
1990 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1991 | cmd.arg = card->rca << 16; | |
1992 | cmd.arg |= 1 << 15; | |
e62f1e0b | 1993 | use_r1b_resp = mmc_prepare_busy_cmd(host, &cmd, timeout_ms); |
cb962e04 | 1994 | |
07a68216 UH |
1995 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1996 | if (err) | |
436f8daa | 1997 | goto out_release; |
07a68216 UH |
1998 | |
1999 | /* | |
6fa79651 UH |
2000 | * If the host does not wait while the card signals busy, then we can |
2001 | * try to poll, but only if the host supports HW polling, as the | |
2002 | * SEND_STATUS cmd is not allowed. If we can't poll, then we simply need | |
2003 | * to wait the sleep/awake timeout. | |
07a68216 | 2004 | */ |
6fa79651 UH |
2005 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY && use_r1b_resp) |
2006 | goto out_release; | |
2007 | ||
2008 | if (!host->ops->card_busy) { | |
cb962e04 | 2009 | mmc_delay(timeout_ms); |
6fa79651 UH |
2010 | goto out_release; |
2011 | } | |
2012 | ||
1760fdb6 | 2013 | err = __mmc_poll_for_busy(host, 0, timeout_ms, &mmc_sleep_busy_cb, host); |
07a68216 | 2014 | |
436f8daa AH |
2015 | out_release: |
2016 | mmc_retune_release(host); | |
07a68216 UH |
2017 | return err; |
2018 | } | |
2019 | ||
e6c08586 UH |
2020 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
2021 | { | |
2022 | return card && | |
2023 | mmc_card_mmc(card) && | |
2024 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
2025 | } | |
2026 | ||
2027 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
2028 | { | |
2029 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
2030 | int err; | |
2031 | ||
2032 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
2033 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
2034 | timeout = card->ext_csd.power_off_longtime; | |
2035 | ||
878e200b UH |
2036 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
2037 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
5e52a168 | 2038 | notify_type, timeout, 0, false, false, MMC_CMD_RETRIES); |
e6c08586 UH |
2039 | if (err) |
2040 | pr_err("%s: Power Off Notification timed out, %u\n", | |
2041 | mmc_hostname(card->host), timeout); | |
2042 | ||
2043 | /* Disable the power off notification after the switch operation. */ | |
2044 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
2045 | ||
2046 | return err; | |
2047 | } | |
2048 | ||
6abaa0c9 PO |
2049 | /* |
2050 | * Host is being removed. Free up the current card. | |
2051 | */ | |
2052 | static void mmc_remove(struct mmc_host *host) | |
2053 | { | |
6abaa0c9 PO |
2054 | mmc_remove_card(host->card); |
2055 | host->card = NULL; | |
2056 | } | |
2057 | ||
d3049504 AH |
2058 | /* |
2059 | * Card detection - card is alive. | |
2060 | */ | |
2061 | static int mmc_alive(struct mmc_host *host) | |
2062 | { | |
2063 | return mmc_send_status(host->card, NULL); | |
2064 | } | |
2065 | ||
6abaa0c9 PO |
2066 | /* |
2067 | * Card detection callback from host. | |
2068 | */ | |
2069 | static void mmc_detect(struct mmc_host *host) | |
2070 | { | |
2071 | int err; | |
2072 | ||
6c0cedd1 | 2073 | mmc_get_card(host->card, NULL); |
6abaa0c9 PO |
2074 | |
2075 | /* | |
2076 | * Just check if our card has been removed. | |
2077 | */ | |
d3049504 | 2078 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 2079 | |
6c0cedd1 | 2080 | mmc_put_card(host->card, NULL); |
6abaa0c9 | 2081 | |
17b0429d | 2082 | if (err) { |
4101c16a | 2083 | mmc_remove(host); |
6abaa0c9 PO |
2084 | |
2085 | mmc_claim_host(host); | |
2086 | mmc_detach_bus(host); | |
7f7e4129 | 2087 | mmc_power_off(host); |
6abaa0c9 PO |
2088 | mmc_release_host(host); |
2089 | } | |
2090 | } | |
2091 | ||
97fce126 AA |
2092 | static bool _mmc_cache_enabled(struct mmc_host *host) |
2093 | { | |
2094 | return host->card->ext_csd.cache_size > 0 && | |
2095 | host->card->ext_csd.cache_ctrl & 1; | |
2096 | } | |
2097 | ||
8ae11ede UH |
2098 | /* |
2099 | * Flush the internal cache of the eMMC to non-volatile storage. | |
2100 | */ | |
2101 | static int _mmc_flush_cache(struct mmc_host *host) | |
2102 | { | |
2103 | int err = 0; | |
2104 | ||
ed9009ad BH |
2105 | if (mmc_card_broken_cache_flush(host->card) && !host->card->written_flag) |
2106 | return 0; | |
2107 | ||
8ae11ede UH |
2108 | if (_mmc_cache_enabled(host)) { |
2109 | err = mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL, | |
2110 | EXT_CSD_FLUSH_CACHE, 1, | |
2111 | CACHE_FLUSH_TIMEOUT_MS); | |
2112 | if (err) | |
ed9009ad BH |
2113 | pr_err("%s: cache flush error %d\n", mmc_hostname(host), err); |
2114 | else | |
2115 | host->card->written_flag = false; | |
8ae11ede UH |
2116 | } |
2117 | ||
2118 | return err; | |
2119 | } | |
2120 | ||
03d071fc | 2121 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 2122 | { |
c3805467 | 2123 | int err = 0; |
03d071fc UH |
2124 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
2125 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 2126 | |
6abaa0c9 | 2127 | mmc_claim_host(host); |
881d926d | 2128 | |
9ec775f7 UH |
2129 | if (mmc_card_suspended(host->card)) |
2130 | goto out; | |
2131 | ||
8ae11ede | 2132 | err = _mmc_flush_cache(host); |
881d926d ME |
2133 | if (err) |
2134 | goto out; | |
2135 | ||
43235679 | 2136 | if (mmc_can_poweroff_notify(host->card) && |
ec02760b YS |
2137 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || |
2138 | (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND))) | |
03d071fc | 2139 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
2140 | else if (mmc_can_sleep(host->card)) |
2141 | err = mmc_sleep(host); | |
e6c08586 | 2142 | else if (!mmc_host_is_spi(host)) |
85e727ed | 2143 | err = mmc_deselect_cards(host); |
95cdfb72 | 2144 | |
9ec775f7 | 2145 | if (!err) { |
74590263 | 2146 | mmc_power_off(host); |
9ec775f7 UH |
2147 | mmc_card_set_suspended(host->card); |
2148 | } | |
881d926d ME |
2149 | out: |
2150 | mmc_release_host(host); | |
c3805467 | 2151 | return err; |
6abaa0c9 | 2152 | } |
7ea239d9 | 2153 | |
03d071fc | 2154 | /* |
0cb403a2 | 2155 | * Suspend callback |
03d071fc UH |
2156 | */ |
2157 | static int mmc_suspend(struct mmc_host *host) | |
2158 | { | |
0cb403a2 UH |
2159 | int err; |
2160 | ||
2161 | err = _mmc_suspend(host, true); | |
2162 | if (!err) { | |
2163 | pm_runtime_disable(&host->card->dev); | |
2164 | pm_runtime_set_suspended(&host->card->dev); | |
2165 | } | |
2166 | ||
2167 | return err; | |
03d071fc UH |
2168 | } |
2169 | ||
6abaa0c9 | 2170 | /* |
6abaa0c9 PO |
2171 | * This function tries to determine if the same card is still present |
2172 | * and, if so, restore all state to it. | |
2173 | */ | |
0cb403a2 | 2174 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 2175 | { |
9ec775f7 | 2176 | int err = 0; |
6abaa0c9 | 2177 | |
6abaa0c9 | 2178 | mmc_claim_host(host); |
9ec775f7 UH |
2179 | |
2180 | if (!mmc_card_suspended(host->card)) | |
2181 | goto out; | |
2182 | ||
69041150 | 2183 | mmc_power_up(host, host->card->ocr); |
69041150 | 2184 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 2185 | mmc_card_clr_suspended(host->card); |
2986d0bf | 2186 | |
9ec775f7 UH |
2187 | out: |
2188 | mmc_release_host(host); | |
95cdfb72 | 2189 | return err; |
6abaa0c9 PO |
2190 | } |
2191 | ||
9ec775f7 UH |
2192 | /* |
2193 | * Shutdown callback | |
2194 | */ | |
2195 | static int mmc_shutdown(struct mmc_host *host) | |
2196 | { | |
2197 | int err = 0; | |
2198 | ||
2199 | /* | |
2200 | * In a specific case for poweroff notify, we need to resume the card | |
2201 | * before we can shutdown it properly. | |
2202 | */ | |
2203 | if (mmc_can_poweroff_notify(host->card) && | |
2204 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 2205 | err = _mmc_resume(host); |
9ec775f7 UH |
2206 | |
2207 | if (!err) | |
2208 | err = _mmc_suspend(host, false); | |
2209 | ||
2210 | return err; | |
2211 | } | |
c4d770d7 | 2212 | |
0cb403a2 UH |
2213 | /* |
2214 | * Callback for resume. | |
2215 | */ | |
2216 | static int mmc_resume(struct mmc_host *host) | |
2217 | { | |
0cb403a2 | 2218 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 2219 | return 0; |
0cb403a2 UH |
2220 | } |
2221 | ||
c4d770d7 UH |
2222 | /* |
2223 | * Callback for runtime_suspend. | |
2224 | */ | |
2225 | static int mmc_runtime_suspend(struct mmc_host *host) | |
2226 | { | |
2227 | int err; | |
2228 | ||
2229 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
2230 | return 0; | |
2231 | ||
0cb403a2 | 2232 | err = _mmc_suspend(host, true); |
0cc81a8c | 2233 | if (err) |
f42cf8d6 | 2234 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 2235 | mmc_hostname(host), err); |
c4d770d7 | 2236 | |
c4d770d7 UH |
2237 | return err; |
2238 | } | |
2239 | ||
2240 | /* | |
2241 | * Callback for runtime_resume. | |
2242 | */ | |
2243 | static int mmc_runtime_resume(struct mmc_host *host) | |
2244 | { | |
2245 | int err; | |
2246 | ||
0cb403a2 | 2247 | err = _mmc_resume(host); |
520322d9 | 2248 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2249 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2250 | mmc_hostname(host), err); |
2251 | ||
c4d770d7 UH |
2252 | return 0; |
2253 | } | |
2254 | ||
88bed3a6 | 2255 | static int mmc_can_reset(struct mmc_card *card) |
f855a371 JR |
2256 | { |
2257 | u8 rst_n_function; | |
2258 | ||
2259 | rst_n_function = card->ext_csd.rst_n_function; | |
2260 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2261 | return 0; | |
2262 | return 1; | |
2263 | } | |
f855a371 | 2264 | |
3a3db603 | 2265 | static int _mmc_hw_reset(struct mmc_host *host) |
f855a371 JR |
2266 | { |
2267 | struct mmc_card *card = host->card; | |
f855a371 | 2268 | |
437db4c6 AH |
2269 | /* |
2270 | * In the case of recovery, we can't expect flushing the cache to work | |
2271 | * always, but we have a go and ignore errors. | |
2272 | */ | |
8ae11ede | 2273 | _mmc_flush_cache(host); |
437db4c6 | 2274 | |
32f18e59 | 2275 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->card_hw_reset && |
4e6c7178 GG |
2276 | mmc_can_reset(card)) { |
2277 | /* If the card accept RST_n signal, send it. */ | |
2278 | mmc_set_clock(host, host->f_init); | |
32f18e59 | 2279 | host->ops->card_hw_reset(host); |
4e6c7178 GG |
2280 | /* Set initial state and call mmc_set_ios */ |
2281 | mmc_set_initial_state(host); | |
2282 | } else { | |
2283 | /* Do a brute force power cycle */ | |
2284 | mmc_power_cycle(host, card->ocr); | |
52c8212d | 2285 | mmc_pwrseq_reset(host); |
4e6c7178 | 2286 | } |
364549dd | 2287 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2288 | } |
2289 | ||
6abaa0c9 PO |
2290 | static const struct mmc_bus_ops mmc_ops = { |
2291 | .remove = mmc_remove, | |
2292 | .detect = mmc_detect, | |
2293 | .suspend = mmc_suspend, | |
2294 | .resume = mmc_resume, | |
c4d770d7 UH |
2295 | .runtime_suspend = mmc_runtime_suspend, |
2296 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2297 | .alive = mmc_alive, |
486fdbbc | 2298 | .shutdown = mmc_shutdown, |
3a3db603 | 2299 | .hw_reset = _mmc_hw_reset, |
97fce126 | 2300 | .cache_enabled = _mmc_cache_enabled, |
8ae11ede | 2301 | .flush_cache = _mmc_flush_cache, |
6abaa0c9 PO |
2302 | }; |
2303 | ||
2304 | /* | |
2305 | * Starting point for MMC card init. | |
2306 | */ | |
807e8e40 | 2307 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2308 | { |
2309 | int err; | |
69041150 | 2310 | u32 ocr, rocr; |
6abaa0c9 | 2311 | |
d84075c8 | 2312 | WARN_ON(!host->claimed); |
6abaa0c9 | 2313 | |
44669034 SNX |
2314 | /* Set correct bus mode for MMC before attempting attach */ |
2315 | if (!mmc_host_is_spi(host)) | |
2316 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2317 | ||
807e8e40 AR |
2318 | err = mmc_send_op_cond(host, 0, &ocr); |
2319 | if (err) | |
2320 | return err; | |
2321 | ||
2501c917 | 2322 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2323 | if (host->ocr_avail_mmc) |
2324 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2325 | |
af517150 DB |
2326 | /* |
2327 | * We need to get OCR a different way for SPI. | |
2328 | */ | |
2329 | if (mmc_host_is_spi(host)) { | |
2330 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2331 | if (err) | |
2332 | goto err; | |
2333 | } | |
2334 | ||
69041150 | 2335 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2336 | |
2337 | /* | |
2338 | * Can we support the voltage of the card? | |
2339 | */ | |
69041150 | 2340 | if (!rocr) { |
109b5bed | 2341 | err = -EINVAL; |
6abaa0c9 | 2342 | goto err; |
109b5bed | 2343 | } |
6abaa0c9 PO |
2344 | |
2345 | /* | |
2346 | * Detect and init the card. | |
2347 | */ | |
69041150 | 2348 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2349 | if (err) |
6abaa0c9 PO |
2350 | goto err; |
2351 | ||
2352 | mmc_release_host(host); | |
4101c16a | 2353 | err = mmc_add_card(host->card); |
7ea239d9 | 2354 | if (err) |
2986d0bf | 2355 | goto remove_card; |
7ea239d9 | 2356 | |
2860d060 | 2357 | mmc_claim_host(host); |
7ea239d9 PO |
2358 | return 0; |
2359 | ||
2986d0bf | 2360 | remove_card: |
6abaa0c9 | 2361 | mmc_remove_card(host->card); |
2986d0bf | 2362 | mmc_claim_host(host); |
807e8e40 | 2363 | host->card = NULL; |
7ea239d9 PO |
2364 | err: |
2365 | mmc_detach_bus(host); | |
7ea239d9 | 2366 | |
a3c76eb9 | 2367 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2368 | mmc_hostname(host), err); |
2369 | ||
adf66a0d | 2370 | return err; |
7ea239d9 | 2371 | } |