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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> |
7ea239d9 PO |
15 | |
16 | #include <linux/mmc/host.h> | |
17 | #include <linux/mmc/card.h> | |
18 | #include <linux/mmc/mmc.h> | |
19 | ||
20 | #include "core.h" | |
4facdde1 | 21 | #include "card.h" |
436f8daa | 22 | #include "host.h" |
4101c16a | 23 | #include "bus.h" |
7ea239d9 | 24 | #include "mmc_ops.h" |
28fc64af | 25 | #include "quirks.h" |
4c4cb171 | 26 | #include "sd_ops.h" |
52c8212d | 27 | #include "pwrseq.h" |
7ea239d9 | 28 | |
fe1b5700 | 29 | #define DEFAULT_CMD6_TIMEOUT_MS 500 |
e3ae3401 | 30 | #define MIN_CACHE_EN_TIMEOUT_MS 1600 |
fe1b5700 | 31 | |
7ea239d9 PO |
32 | static const unsigned int tran_exp[] = { |
33 | 10000, 100000, 1000000, 10000000, | |
34 | 0, 0, 0, 0 | |
35 | }; | |
36 | ||
37 | static const unsigned char tran_mant[] = { | |
38 | 0, 10, 12, 13, 15, 20, 25, 30, | |
39 | 35, 40, 45, 50, 55, 60, 70, 80, | |
40 | }; | |
41 | ||
4406ae21 | 42 | static const unsigned int taac_exp[] = { |
7ea239d9 PO |
43 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
44 | }; | |
45 | ||
4406ae21 | 46 | static const unsigned int taac_mant[] = { |
7ea239d9 PO |
47 | 0, 10, 12, 13, 15, 20, 25, 30, |
48 | 35, 40, 45, 50, 55, 60, 70, 80, | |
49 | }; | |
50 | ||
51 | #define UNSTUFF_BITS(resp,start,size) \ | |
52 | ({ \ | |
53 | const int __size = size; \ | |
54 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
55 | const int __off = 3 - ((start) / 32); \ | |
56 | const int __shft = (start) & 31; \ | |
57 | u32 __res; \ | |
58 | \ | |
59 | __res = resp[__off] >> __shft; \ | |
60 | if (__size + __shft > 32) \ | |
61 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
62 | __res & __mask; \ | |
63 | }) | |
64 | ||
65 | /* | |
66 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
67 | */ | |
bd766312 | 68 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
69 | { |
70 | u32 *resp = card->raw_cid; | |
71 | ||
72 | /* | |
73 | * The selection of the format here is based upon published | |
74 | * specs from sandisk and from what people have reported. | |
75 | */ | |
76 | switch (card->csd.mmca_vsn) { | |
77 | case 0: /* MMC v1.0 - v1.2 */ | |
78 | case 1: /* MMC v1.4 */ | |
79 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
80 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
81 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
82 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
83 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
84 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
85 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
86 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
87 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
88 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
89 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
90 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
91 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
92 | break; | |
93 | ||
94 | case 2: /* MMC v2.0 - v2.2 */ | |
95 | case 3: /* MMC v3.1 - v3.3 */ | |
96 | case 4: /* MMC v4 */ | |
97 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
98 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
99 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
100 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
101 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
102 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
103 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
104 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 105 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
106 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
107 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
108 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
109 | break; | |
110 | ||
111 | default: | |
a3c76eb9 | 112 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 113 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 114 | return -EINVAL; |
7ea239d9 | 115 | } |
bd766312 PO |
116 | |
117 | return 0; | |
7ea239d9 PO |
118 | } |
119 | ||
dfe86cba AH |
120 | static void mmc_set_erase_size(struct mmc_card *card) |
121 | { | |
122 | if (card->ext_csd.erase_group_def & 1) | |
123 | card->erase_size = card->ext_csd.hc_erase_size; | |
124 | else | |
125 | card->erase_size = card->csd.erase_size; | |
126 | ||
127 | mmc_init_erase(card); | |
128 | } | |
129 | ||
7ea239d9 PO |
130 | /* |
131 | * Given a 128-bit response, decode to our card CSD structure. | |
132 | */ | |
bd766312 | 133 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
134 | { |
135 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 136 | unsigned int e, m, a, b; |
7ea239d9 PO |
137 | u32 *resp = card->raw_csd; |
138 | ||
139 | /* | |
140 | * We only understand CSD structure v1.1 and v1.2. | |
141 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 142 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 143 | */ |
6da24b78 KP |
144 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
145 | if (csd->structure == 0) { | |
a3c76eb9 | 146 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 147 | mmc_hostname(card->host), csd->structure); |
bd766312 | 148 | return -EINVAL; |
7ea239d9 PO |
149 | } |
150 | ||
151 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
152 | m = UNSTUFF_BITS(resp, 115, 4); | |
153 | e = UNSTUFF_BITS(resp, 112, 3); | |
4406ae21 SL |
154 | csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; |
155 | csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
7ea239d9 PO |
156 | |
157 | m = UNSTUFF_BITS(resp, 99, 4); | |
158 | e = UNSTUFF_BITS(resp, 96, 3); | |
159 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
160 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
161 | ||
162 | e = UNSTUFF_BITS(resp, 47, 3); | |
163 | m = UNSTUFF_BITS(resp, 62, 12); | |
164 | csd->capacity = (1 + m) << (e + 2); | |
165 | ||
166 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
167 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
168 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
169 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 170 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
171 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
172 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
173 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 174 | |
dfe86cba AH |
175 | if (csd->write_blkbits >= 9) { |
176 | a = UNSTUFF_BITS(resp, 42, 5); | |
177 | b = UNSTUFF_BITS(resp, 37, 5); | |
178 | csd->erase_size = (a + 1) * (b + 1); | |
179 | csd->erase_size <<= csd->write_blkbits - 9; | |
180 | } | |
181 | ||
bd766312 | 182 | return 0; |
7ea239d9 PO |
183 | } |
184 | ||
96cf5f02 SJ |
185 | static void mmc_select_card_type(struct mmc_card *card) |
186 | { | |
187 | struct mmc_host *host = card->host; | |
0a5b6438 | 188 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 189 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 190 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 191 | unsigned int avail_type = 0; |
96cf5f02 | 192 | |
2415c0ef SJ |
193 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
194 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 195 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
196 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
197 | } | |
96cf5f02 SJ |
198 | |
199 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 200 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 201 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
202 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
203 | } | |
96cf5f02 | 204 | |
20f921bb | 205 | if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && |
2415c0ef | 206 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { |
96cf5f02 | 207 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
208 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
209 | } | |
210 | ||
211 | if (caps & MMC_CAP_1_2V_DDR && | |
212 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
213 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
214 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
215 | } | |
96cf5f02 | 216 | |
2415c0ef SJ |
217 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
218 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 219 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
220 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
221 | } | |
222 | ||
223 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
224 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 225 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
226 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
227 | } | |
96cf5f02 | 228 | |
0a5b6438 SJ |
229 | if (caps2 & MMC_CAP2_HS400_1_8V && |
230 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
231 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
232 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
233 | } | |
234 | ||
235 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
236 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
237 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
238 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
239 | } | |
240 | ||
81ac2af6 SL |
241 | if ((caps2 & MMC_CAP2_HS400_ES) && |
242 | card->ext_csd.strobe_support && | |
243 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
244 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
245 | ||
96cf5f02 | 246 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 247 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 248 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
249 | } |
250 | ||
b4493eea GS |
251 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
252 | { | |
994324bb GS |
253 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
254 | ||
255 | /* | |
256 | * Disable these attributes by default | |
257 | */ | |
258 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
259 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
260 | |
261 | /* | |
262 | * Enhanced area feature support -- check whether the eMMC | |
263 | * card has the Enhanced area enabled. If so, export enhanced | |
264 | * area offset and size to user by adding sysfs interface. | |
265 | */ | |
266 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
267 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
268 | if (card->ext_csd.partition_setting_completed) { |
269 | hc_erase_grp_sz = | |
270 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
271 | hc_wp_grp_sz = | |
272 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 273 | |
994324bb GS |
274 | /* |
275 | * calculate the enhanced data area offset, in bytes | |
276 | */ | |
277 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
278 | (((unsigned long long)ext_csd[139]) << 24) + |
279 | (((unsigned long long)ext_csd[138]) << 16) + | |
280 | (((unsigned long long)ext_csd[137]) << 8) + | |
281 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
282 | if (mmc_card_blockaddr(card)) |
283 | card->ext_csd.enhanced_area_offset <<= 9; | |
284 | /* | |
285 | * calculate the enhanced data area size, in kilobytes | |
286 | */ | |
287 | card->ext_csd.enhanced_area_size = | |
288 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
289 | ext_csd[140]; | |
290 | card->ext_csd.enhanced_area_size *= | |
291 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
292 | card->ext_csd.enhanced_area_size <<= 9; | |
293 | } else { | |
294 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
295 | mmc_hostname(card->host)); | |
296 | } | |
b4493eea GS |
297 | } |
298 | } | |
299 | ||
4facdde1 UH |
300 | static void mmc_part_add(struct mmc_card *card, unsigned int size, |
301 | unsigned int part_cfg, char *name, int idx, bool ro, | |
302 | int area_type) | |
303 | { | |
304 | card->part[card->nr_parts].size = size; | |
305 | card->part[card->nr_parts].part_cfg = part_cfg; | |
306 | sprintf(card->part[card->nr_parts].name, name, idx); | |
307 | card->part[card->nr_parts].force_ro = ro; | |
308 | card->part[card->nr_parts].area_type = area_type; | |
309 | card->nr_parts++; | |
310 | } | |
311 | ||
b4493eea GS |
312 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) |
313 | { | |
b4493eea | 314 | int idx; |
994324bb GS |
315 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
316 | unsigned int part_size; | |
b4493eea GS |
317 | |
318 | /* | |
319 | * General purpose partition feature support -- | |
320 | * If ext_csd has the size of general purpose partitions, | |
321 | * set size, part_cfg, partition name in mmc_part. | |
322 | */ | |
323 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
324 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
325 | hc_erase_grp_sz = |
326 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
327 | hc_wp_grp_sz = | |
328 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
329 | |
330 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
331 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
332 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
333 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
334 | continue; | |
994324bb GS |
335 | if (card->ext_csd.partition_setting_completed == 0) { |
336 | pr_warn("%s: has partition size defined without partition complete\n", | |
337 | mmc_hostname(card->host)); | |
338 | break; | |
339 | } | |
b4493eea GS |
340 | part_size = |
341 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
342 | << 16) + | |
343 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
344 | << 8) + | |
345 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
346 | part_size *= (size_t)(hc_erase_grp_sz * | |
347 | hc_wp_grp_sz); | |
348 | mmc_part_add(card, part_size << 19, | |
349 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
350 | "gp%d", idx, false, | |
351 | MMC_BLK_DATA_AREA_GP); | |
352 | } | |
353 | } | |
354 | } | |
355 | ||
1c447116 AH |
356 | /* Minimum partition switch timeout in milliseconds */ |
357 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
358 | ||
08ee80cc PR |
359 | /* |
360 | * Decode extended CSD. | |
361 | */ | |
076ec38a | 362 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 363 | { |
e0c368d5 NJ |
364 | int err = 0, idx; |
365 | unsigned int part_size; | |
81f8a7be HG |
366 | struct device_node *np; |
367 | bool broken_hpi = false; | |
08ee80cc | 368 | |
6da24b78 | 369 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 370 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 371 | if (card->csd.structure == 3) { |
f39b2dd9 | 372 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 373 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 374 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 375 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
376 | err = -EINVAL; |
377 | goto out; | |
378 | } | |
379 | } | |
380 | ||
81f8a7be HG |
381 | np = mmc_of_find_child_device(card->host, 0); |
382 | if (np && of_device_is_compatible(np, "mmc-card")) | |
383 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
384 | of_node_put(np); | |
385 | ||
03a59437 RI |
386 | /* |
387 | * The EXT_CSD format is meant to be forward compatible. As long | |
388 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
389 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
390 | */ | |
b1ebe384 | 391 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 392 | |
5320226a P |
393 | /* fixup device after ext_csd revision field is updated */ |
394 | mmc_fixup_device(card, mmc_ext_csd_fixups); | |
395 | ||
f39b2dd9 PR |
396 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
397 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
398 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
399 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 400 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
401 | card->ext_csd.sectors = |
402 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
403 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
404 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
405 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
406 | |
407 | /* Cards with density > 2GiB are sector addressed */ | |
408 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
409 | mmc_card_set_blockaddr(card); |
410 | } | |
96cf5f02 | 411 | |
81ac2af6 | 412 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 413 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 414 | mmc_select_card_type(card); |
7ea239d9 | 415 | |
f39b2dd9 PR |
416 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
417 | card->ext_csd.raw_erase_timeout_mult = | |
418 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
419 | card->ext_csd.raw_hc_erase_grp_size = | |
420 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
421 | if (card->ext_csd.rev >= 3) { |
422 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
423 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
424 | ||
425 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
426 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
427 | /* Some eMMC set the value too low so set a minimum */ |
428 | if (card->ext_csd.part_time && | |
429 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
430 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
431 | |
432 | /* Sleep / awake timeout in 100ns units */ | |
433 | if (sa_shift > 0 && sa_shift <= 0x17) | |
434 | card->ext_csd.sa_timeout = | |
435 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
436 | card->ext_csd.erase_group_def = |
437 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
438 | card->ext_csd.hc_erase_timeout = 300 * | |
439 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
440 | card->ext_csd.hc_erase_size = | |
441 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
442 | |
443 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
444 | |
445 | /* | |
446 | * There are two boot regions of equal size, defined in | |
447 | * multiples of 128K. | |
448 | */ | |
e0c368d5 NJ |
449 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
450 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
451 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
452 | mmc_part_add(card, part_size, | |
453 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
454 | "boot%d", idx, true, |
455 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
456 | } |
457 | } | |
dfe86cba AH |
458 | } |
459 | ||
f39b2dd9 | 460 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 461 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
462 | card->ext_csd.raw_sec_trim_mult = |
463 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
464 | card->ext_csd.raw_sec_erase_mult = | |
465 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
466 | card->ext_csd.raw_sec_feature_support = | |
467 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
468 | card->ext_csd.raw_trim_mult = | |
469 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 470 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 471 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 472 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
473 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
474 | EXT_CSD_PART_SETTING_COMPLETED) | |
475 | card->ext_csd.partition_setting_completed = 1; | |
476 | else | |
477 | card->ext_csd.partition_setting_completed = 0; | |
478 | ||
b4493eea | 479 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 480 | |
b4493eea | 481 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 482 | |
dfe86cba AH |
483 | card->ext_csd.sec_trim_mult = |
484 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
485 | card->ext_csd.sec_erase_mult = | |
486 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
487 | card->ext_csd.sec_feature_support = | |
488 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
489 | card->ext_csd.trim_timeout = 300 * | |
490 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
491 | |
492 | /* | |
493 | * Note that the call to mmc_part_add above defaults to read | |
494 | * only. If this default assumption is changed, the call must | |
495 | * take into account the value of boot_locked below. | |
496 | */ | |
497 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
498 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
499 | |
500 | /* Save power class values */ | |
501 | card->ext_csd.raw_pwr_cl_52_195 = | |
502 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
503 | card->ext_csd.raw_pwr_cl_26_195 = | |
504 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
505 | card->ext_csd.raw_pwr_cl_52_360 = | |
506 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
507 | card->ext_csd.raw_pwr_cl_26_360 = | |
508 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
509 | card->ext_csd.raw_pwr_cl_200_195 = | |
510 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
511 | card->ext_csd.raw_pwr_cl_200_360 = | |
512 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
513 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
514 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
515 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
516 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
517 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
518 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
519 | } |
520 | ||
b2499518 | 521 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
522 | /* Adjust production date as per JEDEC JESD84-B451 */ |
523 | if (card->cid.year < 2010) | |
524 | card->cid.year += 16; | |
525 | ||
950d56ac | 526 | /* check whether the eMMC card supports BKOPS */ |
ba9f39a7 | 527 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { |
950d56ac | 528 | card->ext_csd.bkops = 1; |
0501be64 AS |
529 | card->ext_csd.man_bkops_en = |
530 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
531 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
532 | card->ext_csd.raw_bkops_status = |
533 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
6962c2fb UY |
534 | if (card->ext_csd.man_bkops_en) |
535 | pr_debug("%s: MAN_BKOPS_EN bit is set\n", | |
950d56ac | 536 | mmc_hostname(card->host)); |
efff8e78 UY |
537 | card->ext_csd.auto_bkops_en = |
538 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
539 | EXT_CSD_AUTO_BKOPS_MASK); | |
540 | if (card->ext_csd.auto_bkops_en) | |
541 | pr_debug("%s: AUTO_BKOPS_EN bit is set\n", | |
542 | mmc_hostname(card->host)); | |
950d56ac JC |
543 | } |
544 | ||
eb0d8f13 | 545 | /* check whether the eMMC card supports HPI */ |
5320226a P |
546 | if (!mmc_card_broken_hpi(card) && |
547 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { | |
eb0d8f13 JC |
548 | card->ext_csd.hpi = 1; |
549 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
550 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
551 | else | |
552 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
553 | /* | |
554 | * Indicate the maximum timeout to close | |
555 | * a command interrupted by HPI | |
556 | */ | |
557 | card->ext_csd.out_of_int_time = | |
558 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
559 | } | |
560 | ||
f4c5522b | 561 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 562 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
563 | |
564 | /* | |
565 | * RPMB regions are defined in multiples of 128K. | |
566 | */ | |
567 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 568 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
569 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
570 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
571 | "rpmb", 0, false, | |
572 | MMC_BLK_DATA_AREA_RPMB); | |
573 | } | |
b2499518 | 574 | } |
f4c5522b | 575 | |
5238acbe | 576 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
577 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
578 | card->erased_byte = 0xFF; | |
579 | else | |
580 | card->erased_byte = 0x0; | |
581 | ||
336c716a | 582 | /* eMMC v4.5 or later */ |
fe1b5700 | 583 | card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; |
bec8726a | 584 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
585 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
586 | ||
b23cf0bd SJ |
587 | card->ext_csd.generic_cmd6_time = 10 * |
588 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
589 | card->ext_csd.power_off_longtime = 10 * |
590 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 591 | |
336c716a SJ |
592 | card->ext_csd.cache_size = |
593 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
594 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
595 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
596 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
597 | |
598 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
599 | card->ext_csd.data_sector_size = 4096; | |
600 | else | |
601 | card->ext_csd.data_sector_size = 512; | |
602 | ||
603 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
604 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
605 | card->ext_csd.data_tag_unit_size = | |
606 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
607 | (card->ext_csd.data_sector_size); | |
608 | } else { | |
609 | card->ext_csd.data_tag_unit_size = 0; | |
610 | } | |
abd9ac14 SJ |
611 | |
612 | card->ext_csd.max_packed_writes = | |
613 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
614 | card->ext_csd.max_packed_reads = | |
615 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
616 | } else { |
617 | card->ext_csd.data_sector_size = 512; | |
336c716a | 618 | } |
881d1c25 | 619 | |
0f762426 GG |
620 | /* eMMC v5 or later */ |
621 | if (card->ext_csd.rev >= 7) { | |
622 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
623 | MMC_FIRMWARE_LEN); | |
624 | card->ext_csd.ffu_capable = | |
625 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
626 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
46bc5c40 JL |
627 | |
628 | card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; | |
629 | card->ext_csd.device_life_time_est_typ_a = | |
630 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; | |
631 | card->ext_csd.device_life_time_est_typ_b = | |
632 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; | |
0f762426 | 633 | } |
925ff3a7 AH |
634 | |
635 | /* eMMC v5.1 or later */ | |
636 | if (card->ext_csd.rev >= 8) { | |
637 | card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & | |
638 | EXT_CSD_CMDQ_SUPPORTED; | |
639 | card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & | |
640 | EXT_CSD_CMDQ_DEPTH_MASK) + 1; | |
641 | /* Exclude inefficiently small queue depths */ | |
642 | if (card->ext_csd.cmdq_depth <= 2) { | |
643 | card->ext_csd.cmdq_support = false; | |
644 | card->ext_csd.cmdq_depth = 0; | |
645 | } | |
646 | if (card->ext_csd.cmdq_support) { | |
647 | pr_debug("%s: Command Queue supported depth %u\n", | |
648 | mmc_hostname(card->host), | |
649 | card->ext_csd.cmdq_depth); | |
650 | } | |
651 | } | |
7ea239d9 | 652 | out: |
08ee80cc PR |
653 | return err; |
654 | } | |
655 | ||
076ec38a UH |
656 | static int mmc_read_ext_csd(struct mmc_card *card) |
657 | { | |
c197787c | 658 | u8 *ext_csd; |
076ec38a UH |
659 | int err; |
660 | ||
c197787c UH |
661 | if (!mmc_can_ext_csd(card)) |
662 | return 0; | |
663 | ||
076ec38a | 664 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
665 | if (err) { |
666 | /* If the host or the card can't do the switch, | |
667 | * fail more gracefully. */ | |
668 | if ((err != -EINVAL) | |
669 | && (err != -ENOSYS) | |
670 | && (err != -EFAULT)) | |
671 | return err; | |
672 | ||
673 | /* | |
674 | * High capacity cards should have this "magic" size | |
675 | * stored in their CSD. | |
676 | */ | |
677 | if (card->csd.capacity == (4096 * 512)) { | |
678 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
679 | mmc_hostname(card->host)); | |
680 | } else { | |
681 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
682 | mmc_hostname(card->host)); | |
683 | err = 0; | |
684 | } | |
685 | ||
076ec38a | 686 | return err; |
c197787c | 687 | } |
076ec38a UH |
688 | |
689 | err = mmc_decode_ext_csd(card, ext_csd); | |
690 | kfree(ext_csd); | |
691 | return err; | |
692 | } | |
693 | ||
f39b2dd9 | 694 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
695 | { |
696 | u8 *bw_ext_csd; | |
697 | int err; | |
698 | ||
f39b2dd9 PR |
699 | if (bus_width == MMC_BUS_WIDTH_1) |
700 | return 0; | |
701 | ||
08ee80cc | 702 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
703 | if (err) |
704 | return err; | |
08ee80cc | 705 | |
08ee80cc | 706 | /* only compare read only fields */ |
dd13b4ed | 707 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 708 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 709 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 710 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 711 | (card->ext_csd.rev == |
08ee80cc | 712 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 713 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 714 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 715 | (card->ext_csd.raw_card_type == |
08ee80cc | 716 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 717 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 718 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 719 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 720 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 721 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 722 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 723 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 724 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 725 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 726 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 727 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 728 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 729 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 730 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 731 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 732 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
733 | (card->ext_csd.raw_sectors[0] == |
734 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
735 | (card->ext_csd.raw_sectors[1] == | |
736 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
737 | (card->ext_csd.raw_sectors[2] == | |
738 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
739 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
740 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
741 | (card->ext_csd.raw_pwr_cl_52_195 == | |
742 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
743 | (card->ext_csd.raw_pwr_cl_26_195 == | |
744 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
745 | (card->ext_csd.raw_pwr_cl_52_360 == | |
746 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
747 | (card->ext_csd.raw_pwr_cl_26_360 == | |
748 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
749 | (card->ext_csd.raw_pwr_cl_200_195 == | |
750 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
751 | (card->ext_csd.raw_pwr_cl_200_360 == | |
752 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
753 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
754 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
755 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
756 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
757 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
758 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
759 | ||
08ee80cc PR |
760 | if (err) |
761 | err = -EINVAL; | |
762 | ||
00b41b58 | 763 | kfree(bw_ext_csd); |
7ea239d9 PO |
764 | return err; |
765 | } | |
766 | ||
51ec92e2 PO |
767 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
768 | card->raw_cid[2], card->raw_cid[3]); | |
769 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
770 | card->raw_csd[2], card->raw_csd[3]); | |
771 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
772 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
773 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 774 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
775 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
776 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
777 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
778 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 779 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
04fa0540 | 780 | MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); |
80a780a1 | 781 | MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); |
46bc5c40 JL |
782 | MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", |
783 | card->ext_csd.device_life_time_est_typ_a, | |
784 | card->ext_csd.device_life_time_est_typ_b); | |
51ec92e2 | 785 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
786 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
787 | card->ext_csd.enhanced_area_offset); | |
788 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
789 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
790 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
c892b0d8 | 791 | MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); |
974e85e9 | 792 | MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); |
b658af71 | 793 | MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); |
51ec92e2 | 794 | |
0f762426 GG |
795 | static ssize_t mmc_fwrev_show(struct device *dev, |
796 | struct device_attribute *attr, | |
797 | char *buf) | |
798 | { | |
799 | struct mmc_card *card = mmc_dev_to_card(dev); | |
800 | ||
801 | if (card->ext_csd.rev < 7) { | |
802 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
803 | } else { | |
804 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
805 | card->ext_csd.fwrev); | |
806 | } | |
807 | } | |
808 | ||
809 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
810 | ||
6825a606 BP |
811 | static ssize_t mmc_dsr_show(struct device *dev, |
812 | struct device_attribute *attr, | |
813 | char *buf) | |
814 | { | |
815 | struct mmc_card *card = mmc_dev_to_card(dev); | |
816 | struct mmc_host *host = card->host; | |
817 | ||
818 | if (card->csd.dsr_imp && host->dsr_req) | |
819 | return sprintf(buf, "0x%x\n", host->dsr); | |
820 | else | |
821 | /* return default DSR value */ | |
822 | return sprintf(buf, "0x%x\n", 0x404); | |
823 | } | |
824 | ||
825 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); | |
826 | ||
51ec92e2 PO |
827 | static struct attribute *mmc_std_attrs[] = { |
828 | &dev_attr_cid.attr, | |
829 | &dev_attr_csd.attr, | |
830 | &dev_attr_date.attr, | |
dfe86cba AH |
831 | &dev_attr_erase_size.attr, |
832 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 833 | &dev_attr_fwrev.attr, |
0f762426 | 834 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
835 | &dev_attr_hwrev.attr, |
836 | &dev_attr_manfid.attr, | |
837 | &dev_attr_name.attr, | |
838 | &dev_attr_oemid.attr, | |
51e7e8b6 | 839 | &dev_attr_prv.attr, |
04fa0540 | 840 | &dev_attr_rev.attr, |
46bc5c40 JL |
841 | &dev_attr_pre_eol_info.attr, |
842 | &dev_attr_life_time.attr, | |
51ec92e2 | 843 | &dev_attr_serial.attr, |
709de99d CD |
844 | &dev_attr_enhanced_area_offset.attr, |
845 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
846 | &dev_attr_raw_rpmb_size_mult.attr, |
847 | &dev_attr_rel_sectors.attr, | |
5fb06af7 | 848 | &dev_attr_ocr.attr, |
974e85e9 | 849 | &dev_attr_rca.attr, |
6825a606 | 850 | &dev_attr_dsr.attr, |
b658af71 | 851 | &dev_attr_cmdq_en.attr, |
51ec92e2 PO |
852 | NULL, |
853 | }; | |
d1e58212 | 854 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
855 | |
856 | static struct device_type mmc_type = { | |
d1e58212 | 857 | .groups = mmc_std_groups, |
51ec92e2 PO |
858 | }; |
859 | ||
b87d8dbf G |
860 | /* |
861 | * Select the PowerClass for the current bus width | |
862 | * If power class is defined for 4/8 bit bus in the | |
863 | * extended CSD register, select it by executing the | |
864 | * mmc_switch command. | |
865 | */ | |
2385049d SJ |
866 | static int __mmc_select_powerclass(struct mmc_card *card, |
867 | unsigned int bus_width) | |
b87d8dbf | 868 | { |
2385049d SJ |
869 | struct mmc_host *host = card->host; |
870 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 871 | unsigned int pwrclass_val = 0; |
2385049d | 872 | int err = 0; |
b87d8dbf | 873 | |
b87d8dbf G |
874 | switch (1 << host->ios.vdd) { |
875 | case MMC_VDD_165_195: | |
2385049d SJ |
876 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
877 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
878 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 879 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
880 | ext_csd->raw_pwr_cl_52_195 : |
881 | ext_csd->raw_pwr_cl_ddr_52_195; | |
882 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
883 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 884 | break; |
93fc5a47 SJ |
885 | case MMC_VDD_27_28: |
886 | case MMC_VDD_28_29: | |
887 | case MMC_VDD_29_30: | |
888 | case MMC_VDD_30_31: | |
889 | case MMC_VDD_31_32: | |
b87d8dbf G |
890 | case MMC_VDD_32_33: |
891 | case MMC_VDD_33_34: | |
892 | case MMC_VDD_34_35: | |
893 | case MMC_VDD_35_36: | |
2385049d SJ |
894 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
895 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
896 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 897 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
898 | ext_csd->raw_pwr_cl_52_360 : |
899 | ext_csd->raw_pwr_cl_ddr_52_360; | |
900 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
901 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
902 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
903 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
904 | break; |
905 | default: | |
6606110d JP |
906 | pr_warn("%s: Voltage range not supported for power class\n", |
907 | mmc_hostname(host)); | |
b87d8dbf G |
908 | return -EINVAL; |
909 | } | |
910 | ||
b87d8dbf G |
911 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
912 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
913 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
914 | else | |
915 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
916 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
917 | ||
918 | /* If the power class is different from the default value */ | |
919 | if (pwrclass_val > 0) { | |
920 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
921 | EXT_CSD_POWER_CLASS, | |
922 | pwrclass_val, | |
71fe3eb0 | 923 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
924 | } |
925 | ||
926 | return err; | |
927 | } | |
928 | ||
2385049d SJ |
929 | static int mmc_select_powerclass(struct mmc_card *card) |
930 | { | |
931 | struct mmc_host *host = card->host; | |
932 | u32 bus_width, ext_csd_bits; | |
933 | int err, ddr; | |
934 | ||
935 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 936 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
937 | return 0; |
938 | ||
939 | bus_width = host->ios.bus_width; | |
940 | /* Power class values are defined only for 4/8 bit bus */ | |
941 | if (bus_width == MMC_BUS_WIDTH_1) | |
942 | return 0; | |
943 | ||
944 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
945 | if (ddr) | |
946 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
947 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
948 | else | |
949 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
950 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
951 | ||
952 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
953 | if (err) | |
954 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
955 | mmc_hostname(host), 1 << bus_width, ddr); | |
956 | ||
957 | return err; | |
958 | } | |
959 | ||
a4924c71 | 960 | /* |
577fb131 | 961 | * Set the bus speed for the selected speed mode. |
a4924c71 | 962 | */ |
577fb131 SJ |
963 | static void mmc_set_bus_speed(struct mmc_card *card) |
964 | { | |
965 | unsigned int max_dtr = (unsigned int)-1; | |
966 | ||
0a5b6438 SJ |
967 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
968 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
969 | max_dtr = card->ext_csd.hs200_max_dtr; |
970 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
971 | max_dtr = card->ext_csd.hs_max_dtr; | |
972 | else if (max_dtr > card->csd.max_dtr) | |
973 | max_dtr = card->csd.max_dtr; | |
974 | ||
975 | mmc_set_clock(card->host, max_dtr); | |
976 | } | |
977 | ||
978 | /* | |
979 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
980 | * If the bus width is changed successfully, return the selected width value. | |
981 | * Zero is returned instead of error value if the wide width is not supported. | |
982 | */ | |
983 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 984 | { |
a4924c71 | 985 | static unsigned ext_csd_bits[] = { |
a4924c71 | 986 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 987 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
988 | }; |
989 | static unsigned bus_widths[] = { | |
a4924c71 | 990 | MMC_BUS_WIDTH_8, |
577fb131 | 991 | MMC_BUS_WIDTH_4, |
a4924c71 | 992 | }; |
577fb131 SJ |
993 | struct mmc_host *host = card->host; |
994 | unsigned idx, bus_width = 0; | |
995 | int err = 0; | |
a4924c71 | 996 | |
1c2d26e3 | 997 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
998 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
999 | return 0; | |
a4924c71 | 1000 | |
577fb131 | 1001 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
1002 | |
1003 | /* | |
1004 | * Unlike SD, MMC cards dont have a configuration register to notify | |
1005 | * supported bus width. So bus test command should be run to identify | |
1006 | * the supported bus width or compare the ext csd values of current | |
1007 | * bus width and ext csd values of 1 bit mode read earlier. | |
1008 | */ | |
577fb131 | 1009 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
1010 | /* |
1011 | * Host is capable of 8bit transfer, then switch | |
1012 | * the device to work in 8bit transfer mode. If the | |
1013 | * mmc switch command returns error then switch to | |
1014 | * 4bit transfer mode. On success set the corresponding | |
1015 | * bus width on the host. | |
1016 | */ | |
1017 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1018 | EXT_CSD_BUS_WIDTH, | |
1019 | ext_csd_bits[idx], | |
1020 | card->ext_csd.generic_cmd6_time); | |
1021 | if (err) | |
1022 | continue; | |
1023 | ||
577fb131 SJ |
1024 | bus_width = bus_widths[idx]; |
1025 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 1026 | |
577fb131 SJ |
1027 | /* |
1028 | * If controller can't handle bus width test, | |
1029 | * compare ext_csd previously read in 1 bit mode | |
1030 | * against ext_csd at new bus width | |
1031 | */ | |
a4924c71 | 1032 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 1033 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 1034 | else |
577fb131 SJ |
1035 | err = mmc_bus_test(card, bus_width); |
1036 | ||
1037 | if (!err) { | |
1038 | err = bus_width; | |
a4924c71 | 1039 | break; |
577fb131 SJ |
1040 | } else { |
1041 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 1042 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 1043 | } |
a4924c71 G |
1044 | } |
1045 | ||
577fb131 SJ |
1046 | return err; |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * Switch to the high-speed mode | |
1051 | */ | |
1052 | static int mmc_select_hs(struct mmc_card *card) | |
1053 | { | |
1054 | int err; | |
1055 | ||
1056 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1057 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
53e60650 UH |
1058 | card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, |
1059 | true, true, true); | |
67d35960 JL |
1060 | if (err) |
1061 | pr_warn("%s: switch to high-speed failed, err:%d\n", | |
1062 | mmc_hostname(card->host), err); | |
1063 | ||
577fb131 SJ |
1064 | return err; |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * Activate wide bus and DDR if supported. | |
1069 | */ | |
1070 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1071 | { | |
1072 | struct mmc_host *host = card->host; | |
1073 | u32 bus_width, ext_csd_bits; | |
1074 | int err = 0; | |
1075 | ||
1076 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1077 | return 0; | |
1078 | ||
1079 | bus_width = host->ios.bus_width; | |
1080 | if (bus_width == MMC_BUS_WIDTH_1) | |
1081 | return 0; | |
1082 | ||
1083 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1084 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1085 | ||
e173f891 UH |
1086 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1087 | EXT_CSD_BUS_WIDTH, | |
1088 | ext_csd_bits, | |
1089 | card->ext_csd.generic_cmd6_time, | |
1090 | MMC_TIMING_MMC_DDR52, | |
1091 | true, true, true); | |
577fb131 | 1092 | if (err) { |
4b75bffc | 1093 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1094 | mmc_hostname(host), 1 << bus_width); |
1095 | return err; | |
1096 | } | |
1097 | ||
1098 | /* | |
1099 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1100 | * signaling. | |
1101 | * | |
1102 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1103 | * | |
1104 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1105 | * in the JEDEC spec for DDR. | |
1106 | * | |
312449ef CD |
1107 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1108 | * host controller can support this, like some of the SDHCI | |
1109 | * controller which connect to an eMMC device. Some of these | |
1110 | * host controller still needs to use 1.8v vccq for supporting | |
1111 | * DDR mode. | |
1112 | * | |
1113 | * So the sequence will be: | |
1114 | * if (host and device can both support 1.2v IO) | |
1115 | * use 1.2v IO; | |
1116 | * else if (host and device can both support 1.8v IO) | |
1117 | * use 1.8v IO; | |
1118 | * so if host and device can only support 3.3v IO, this is the | |
1119 | * last choice. | |
577fb131 SJ |
1120 | * |
1121 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1122 | */ | |
20f921bb | 1123 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { |
4e74b6b3 | 1124 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
20f921bb UH |
1125 | if (!err) |
1126 | return 0; | |
1127 | } | |
577fb131 | 1128 | |
20f921bb UH |
1129 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && |
1130 | host->caps & MMC_CAP_1_8V_DDR) | |
4e74b6b3 | 1131 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
312449ef CD |
1132 | |
1133 | /* make sure vccq is 3.3v after switching disaster */ | |
1134 | if (err) | |
4e74b6b3 | 1135 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); |
312449ef | 1136 | |
577fb131 SJ |
1137 | return err; |
1138 | } | |
1139 | ||
0a5b6438 SJ |
1140 | static int mmc_select_hs400(struct mmc_card *card) |
1141 | { | |
1142 | struct mmc_host *host = card->host; | |
51b12f77 | 1143 | unsigned int max_dtr; |
0a5b6438 | 1144 | int err = 0; |
cc4f414c | 1145 | u8 val; |
0a5b6438 SJ |
1146 | |
1147 | /* | |
1148 | * HS400 mode requires 8-bit bus width | |
1149 | */ | |
1150 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1151 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1152 | return 0; | |
1153 | ||
51b12f77 | 1154 | /* Switch card to HS mode */ |
adb24d42 | 1155 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1156 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1157 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1158 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1159 | true, false, true); |
0a5b6438 | 1160 | if (err) { |
4b75bffc | 1161 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1162 | mmc_hostname(host), err); |
1163 | return err; | |
1164 | } | |
1165 | ||
51b12f77 AH |
1166 | /* Set host controller to HS timing */ |
1167 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1168 | ||
ba6c7ac3 SH |
1169 | /* Prepare host to downgrade to HS timing */ |
1170 | if (host->ops->hs400_downgrade) | |
1171 | host->ops->hs400_downgrade(host); | |
1172 | ||
649c6059 ZX |
1173 | /* Reduce frequency to HS frequency */ |
1174 | max_dtr = card->ext_csd.hs_max_dtr; | |
1175 | mmc_set_clock(host, max_dtr); | |
1176 | ||
08573eaf CJ |
1177 | err = mmc_switch_status(card); |
1178 | if (err) | |
1179 | goto out_err; | |
d2302933 | 1180 | |
cc14eec0 YZ |
1181 | if (host->ops->hs400_prepare_ddr) |
1182 | host->ops->hs400_prepare_ddr(host); | |
1183 | ||
d2302933 | 1184 | /* Switch card to DDR */ |
0a5b6438 SJ |
1185 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1186 | EXT_CSD_BUS_WIDTH, | |
1187 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1188 | card->ext_csd.generic_cmd6_time); | |
1189 | if (err) { | |
4b75bffc | 1190 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1191 | mmc_hostname(host), err); |
1192 | return err; | |
1193 | } | |
1194 | ||
d2302933 | 1195 | /* Switch card to HS400 */ |
cc4f414c AH |
1196 | val = EXT_CSD_TIMING_HS400 | |
1197 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1198 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1199 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1200 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1201 | true, false, true); |
0a5b6438 | 1202 | if (err) { |
4b75bffc | 1203 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1204 | mmc_hostname(host), err); |
1205 | return err; | |
1206 | } | |
1207 | ||
d2302933 | 1208 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1209 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1210 | mmc_set_bus_speed(card); | |
1211 | ||
b0e370b9 WS |
1212 | if (host->ops->hs400_complete) |
1213 | host->ops->hs400_complete(host); | |
1214 | ||
08573eaf CJ |
1215 | err = mmc_switch_status(card); |
1216 | if (err) | |
1217 | goto out_err; | |
d2302933 | 1218 | |
0a5b6438 | 1219 | return 0; |
d2302933 AH |
1220 | |
1221 | out_err: | |
1222 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1223 | __func__, err); | |
1224 | return err; | |
0a5b6438 SJ |
1225 | } |
1226 | ||
6376f69d AH |
1227 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1228 | { | |
1229 | return mmc_select_hs400(card); | |
1230 | } | |
1231 | ||
6376f69d AH |
1232 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1233 | { | |
1234 | struct mmc_host *host = card->host; | |
6376f69d AH |
1235 | unsigned int max_dtr; |
1236 | int err; | |
cc4f414c | 1237 | u8 val; |
6376f69d | 1238 | |
6376f69d AH |
1239 | /* Reduce frequency to HS */ |
1240 | max_dtr = card->ext_csd.hs_max_dtr; | |
1241 | mmc_set_clock(host, max_dtr); | |
1242 | ||
1243 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1244 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1245 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1246 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1247 | true, false, true); |
6376f69d AH |
1248 | if (err) |
1249 | goto out_err; | |
1250 | ||
1251 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1252 | ||
08573eaf CJ |
1253 | err = mmc_switch_status(card); |
1254 | if (err) | |
1255 | goto out_err; | |
6376f69d AH |
1256 | |
1257 | /* Switch HS DDR to HS */ | |
1258 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1259 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
aa33ce3c | 1260 | 0, true, false, true); |
6376f69d AH |
1261 | if (err) |
1262 | goto out_err; | |
1263 | ||
1264 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1265 | ||
ba6c7ac3 SH |
1266 | if (host->ops->hs400_downgrade) |
1267 | host->ops->hs400_downgrade(host); | |
1268 | ||
08573eaf CJ |
1269 | err = mmc_switch_status(card); |
1270 | if (err) | |
1271 | goto out_err; | |
6376f69d AH |
1272 | |
1273 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1274 | val = EXT_CSD_TIMING_HS200 | |
1275 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1276 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1277 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1278 | true, false, true); |
6376f69d AH |
1279 | if (err) |
1280 | goto out_err; | |
1281 | ||
1282 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1283 | ||
ef3d2322 AH |
1284 | /* |
1285 | * For HS200, CRC errors are not a reliable way to know the switch | |
1286 | * failed. If there really is a problem, we would expect tuning will | |
1287 | * fail and the result ends up the same. | |
1288 | */ | |
1289 | err = __mmc_switch_status(card, false); | |
08573eaf CJ |
1290 | if (err) |
1291 | goto out_err; | |
6376f69d AH |
1292 | |
1293 | mmc_set_bus_speed(card); | |
1294 | ||
c8a4e30d UH |
1295 | /* Prepare tuning for HS400 mode. */ |
1296 | if (host->ops->prepare_hs400_tuning) | |
1297 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1298 | ||
6376f69d AH |
1299 | return 0; |
1300 | ||
1301 | out_err: | |
1302 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1303 | __func__, err); | |
1304 | return err; | |
1305 | } | |
1306 | ||
fb458864 CM |
1307 | static void mmc_select_driver_type(struct mmc_card *card) |
1308 | { | |
be17f1ce | 1309 | int card_drv_type, drive_strength, drv_type = 0; |
6186d06c | 1310 | int fixed_drv_type = card->host->fixed_drv_type; |
fb458864 CM |
1311 | |
1312 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1313 | mmc_driver_type_mask(0); | |
1314 | ||
6186d06c WS |
1315 | if (fixed_drv_type >= 0) |
1316 | drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) | |
1317 | ? fixed_drv_type : 0; | |
1318 | else | |
1319 | drive_strength = mmc_select_drive_strength(card, | |
1320 | card->ext_csd.hs200_max_dtr, | |
1321 | card_drv_type, &drv_type); | |
fb458864 CM |
1322 | |
1323 | card->drive_strength = drive_strength; | |
1324 | ||
1325 | if (drv_type) | |
1326 | mmc_set_driver_type(card->host, drv_type); | |
1327 | } | |
1328 | ||
81ac2af6 SL |
1329 | static int mmc_select_hs400es(struct mmc_card *card) |
1330 | { | |
1331 | struct mmc_host *host = card->host; | |
92ddd959 | 1332 | int err = -EINVAL; |
81ac2af6 SL |
1333 | u8 val; |
1334 | ||
1335 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { | |
1336 | err = -ENOTSUPP; | |
1337 | goto out_err; | |
1338 | } | |
1339 | ||
1720d354 | 1340 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) |
4e74b6b3 | 1341 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
1720d354 SL |
1342 | |
1343 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) | |
4e74b6b3 | 1344 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
1720d354 SL |
1345 | |
1346 | /* If fails try again during next card power cycle */ | |
1347 | if (err) | |
1348 | goto out_err; | |
1349 | ||
81ac2af6 | 1350 | err = mmc_select_bus_width(card); |
7f38abf2 HF |
1351 | if (err != MMC_BUS_WIDTH_8) { |
1352 | pr_err("%s: switch to 8bit bus width failed, err:%d\n", | |
1353 | mmc_hostname(host), err); | |
1354 | err = err < 0 ? err : -ENOTSUPP; | |
81ac2af6 | 1355 | goto out_err; |
7f38abf2 | 1356 | } |
81ac2af6 SL |
1357 | |
1358 | /* Switch card to HS mode */ | |
53e60650 UH |
1359 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1360 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1361 | card->ext_csd.generic_cmd6_time, 0, | |
1362 | true, false, true); | |
1363 | if (err) { | |
1364 | pr_err("%s: switch to hs for hs400es failed, err:%d\n", | |
1365 | mmc_hostname(host), err); | |
81ac2af6 | 1366 | goto out_err; |
53e60650 | 1367 | } |
81ac2af6 | 1368 | |
53e60650 | 1369 | mmc_set_timing(host, MMC_TIMING_MMC_HS); |
81ac2af6 SL |
1370 | err = mmc_switch_status(card); |
1371 | if (err) | |
1372 | goto out_err; | |
1373 | ||
53e60650 UH |
1374 | mmc_set_clock(host, card->ext_csd.hs_max_dtr); |
1375 | ||
81ac2af6 SL |
1376 | /* Switch card to DDR with strobe bit */ |
1377 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1378 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1379 | EXT_CSD_BUS_WIDTH, | |
1380 | val, | |
1381 | card->ext_csd.generic_cmd6_time); | |
1382 | if (err) { | |
1383 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1384 | mmc_hostname(host), err); | |
1385 | goto out_err; | |
1386 | } | |
1387 | ||
fb458864 CM |
1388 | mmc_select_driver_type(card); |
1389 | ||
81ac2af6 SL |
1390 | /* Switch card to HS400 */ |
1391 | val = EXT_CSD_TIMING_HS400 | | |
1392 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1393 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1394 | EXT_CSD_HS_TIMING, val, | |
aa33ce3c | 1395 | card->ext_csd.generic_cmd6_time, 0, |
81ac2af6 SL |
1396 | true, false, true); |
1397 | if (err) { | |
1398 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1399 | mmc_hostname(host), err); | |
1400 | goto out_err; | |
1401 | } | |
1402 | ||
1403 | /* Set host controller to HS400 timing and frequency */ | |
1404 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1405 | ||
1406 | /* Controller enable enhanced strobe function */ | |
1407 | host->ios.enhanced_strobe = true; | |
1408 | if (host->ops->hs400_enhanced_strobe) | |
1409 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1410 | ||
1411 | err = mmc_switch_status(card); | |
1412 | if (err) | |
1413 | goto out_err; | |
1414 | ||
1415 | return 0; | |
1416 | ||
1417 | out_err: | |
1418 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1419 | __func__, err); | |
1420 | return err; | |
1421 | } | |
1422 | ||
577fb131 SJ |
1423 | /* |
1424 | * For device supporting HS200 mode, the following sequence | |
1425 | * should be done before executing the tuning process. | |
1426 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1427 | * 2. switch to HS200 mode | |
1428 | * 3. set the clock to > 52Mhz and <=200MHz | |
1429 | */ | |
1430 | static int mmc_select_hs200(struct mmc_card *card) | |
1431 | { | |
1432 | struct mmc_host *host = card->host; | |
e51534c8 | 1433 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1434 | int err = -EINVAL; |
cc4f414c | 1435 | u8 val; |
577fb131 | 1436 | |
e51534c8 | 1437 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 | 1438 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
4e74b6b3 | 1439 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
577fb131 SJ |
1440 | |
1441 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
4e74b6b3 | 1442 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
577fb131 SJ |
1443 | |
1444 | /* If fails try again during next card power cycle */ | |
1445 | if (err) | |
e51534c8 | 1446 | return err; |
577fb131 | 1447 | |
cc4f414c AH |
1448 | mmc_select_driver_type(card); |
1449 | ||
577fb131 SJ |
1450 | /* |
1451 | * Set the bus width(4 or 8) with host's support and | |
1452 | * switch to HS200 mode if bus width is set successfully. | |
1453 | */ | |
1454 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1455 | if (err > 0) { |
cc4f414c AH |
1456 | val = EXT_CSD_TIMING_HS200 | |
1457 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1458 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1459 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1460 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1461 | true, false, true); |
1815e61b AH |
1462 | if (err) |
1463 | goto err; | |
1464 | old_timing = host->ios.timing; | |
1465 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
08573eaf | 1466 | |
ef3d2322 AH |
1467 | /* |
1468 | * For HS200, CRC errors are not a reliable way to know the | |
1469 | * switch failed. If there really is a problem, we would expect | |
1470 | * tuning will fail and the result ends up the same. | |
1471 | */ | |
1472 | err = __mmc_switch_status(card, false); | |
1473 | ||
08573eaf CJ |
1474 | /* |
1475 | * mmc_select_timing() assumes timing has not changed if | |
1476 | * it is a switch error. | |
1477 | */ | |
1478 | if (err == -EBADMSG) | |
1479 | mmc_set_timing(host, old_timing); | |
577fb131 | 1480 | } |
a4924c71 | 1481 | err: |
e51534c8 DA |
1482 | if (err) { |
1483 | /* fall back to the old signal voltage, if fails report error */ | |
4e74b6b3 | 1484 | if (mmc_set_signal_voltage(host, old_signal_voltage)) |
e51534c8 DA |
1485 | err = -EIO; |
1486 | ||
1815e61b AH |
1487 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1488 | __func__, err); | |
e51534c8 | 1489 | } |
a4924c71 G |
1490 | return err; |
1491 | } | |
1492 | ||
577fb131 | 1493 | /* |
81ac2af6 | 1494 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1495 | */ |
1496 | static int mmc_select_timing(struct mmc_card *card) | |
1497 | { | |
1498 | int err = 0; | |
1499 | ||
148bcab2 | 1500 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1501 | goto bus_speed; |
1502 | ||
81ac2af6 SL |
1503 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) |
1504 | err = mmc_select_hs400es(card); | |
1505 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
577fb131 SJ |
1506 | err = mmc_select_hs200(card); |
1507 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1508 | err = mmc_select_hs(card); | |
1509 | ||
1510 | if (err && err != -EBADMSG) | |
1511 | return err; | |
1512 | ||
577fb131 SJ |
1513 | bus_speed: |
1514 | /* | |
1515 | * Set the bus speed to the selected bus timing. | |
1516 | * If timing is not selected, backward compatible is the default. | |
1517 | */ | |
1518 | mmc_set_bus_speed(card); | |
0400ed0a | 1519 | return 0; |
577fb131 SJ |
1520 | } |
1521 | ||
1522 | /* | |
1523 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1524 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1525 | */ |
1526 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1527 | { | |
1528 | struct mmc_host *host = card->host; | |
577fb131 | 1529 | |
0a5b6438 SJ |
1530 | /* |
1531 | * Timing should be adjusted to the HS400 target | |
1532 | * operation frequency for tuning process | |
1533 | */ | |
1534 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1535 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1536 | if (host->ops->prepare_hs400_tuning) | |
1537 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1538 | ||
63e415c6 | 1539 | return mmc_execute_tuning(card); |
577fb131 SJ |
1540 | } |
1541 | ||
7ea239d9 | 1542 | /* |
6abaa0c9 PO |
1543 | * Handle the detection and initialisation of a card. |
1544 | * | |
8769392b | 1545 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1546 | * we're trying to reinitialise. |
7ea239d9 | 1547 | */ |
8c75deae | 1548 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1549 | struct mmc_card *oldcard) |
7ea239d9 PO |
1550 | { |
1551 | struct mmc_card *card; | |
577fb131 | 1552 | int err; |
7ea239d9 | 1553 | u32 cid[4]; |
b676f039 | 1554 | u32 rocr; |
7ea239d9 | 1555 | |
d84075c8 | 1556 | WARN_ON(!host->claimed); |
7ea239d9 | 1557 | |
44669034 SNX |
1558 | /* Set correct bus mode for MMC before attempting init */ |
1559 | if (!mmc_host_is_spi(host)) | |
1560 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1561 | ||
7ea239d9 PO |
1562 | /* |
1563 | * Since we're changing the OCR value, we seem to | |
1564 | * need to tell some cards to go back to the idle | |
1565 | * state. We wait 1ms to give cards time to | |
1566 | * respond. | |
c3805467 | 1567 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1568 | */ |
1569 | mmc_go_idle(host); | |
1570 | ||
1571 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1572 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1573 | if (err) |
6abaa0c9 | 1574 | goto err; |
7ea239d9 | 1575 | |
af517150 DB |
1576 | /* |
1577 | * For SPI, enable CRC as appropriate. | |
1578 | */ | |
1579 | if (mmc_host_is_spi(host)) { | |
1580 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1581 | if (err) | |
1582 | goto err; | |
1583 | } | |
1584 | ||
7ea239d9 PO |
1585 | /* |
1586 | * Fetch CID from card. | |
1587 | */ | |
a1473732 | 1588 | err = mmc_send_cid(host, cid); |
17b0429d | 1589 | if (err) |
7ea239d9 PO |
1590 | goto err; |
1591 | ||
6abaa0c9 | 1592 | if (oldcard) { |
adf66a0d | 1593 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
099b6481 | 1594 | pr_debug("%s: Perhaps the card was replaced\n", |
1595 | mmc_hostname(host)); | |
adf66a0d | 1596 | err = -ENOENT; |
6abaa0c9 | 1597 | goto err; |
adf66a0d | 1598 | } |
6abaa0c9 PO |
1599 | |
1600 | card = oldcard; | |
1601 | } else { | |
1602 | /* | |
1603 | * Allocate card structure. | |
1604 | */ | |
51ec92e2 | 1605 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1606 | if (IS_ERR(card)) { |
1607 | err = PTR_ERR(card); | |
6abaa0c9 | 1608 | goto err; |
adf66a0d | 1609 | } |
7ea239d9 | 1610 | |
69041150 | 1611 | card->ocr = ocr; |
6abaa0c9 PO |
1612 | card->type = MMC_TYPE_MMC; |
1613 | card->rca = 1; | |
1614 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1615 | } | |
7ea239d9 | 1616 | |
eac86321 DA |
1617 | /* |
1618 | * Call the optional HC's init_card function to handle quirks. | |
1619 | */ | |
1620 | if (host->ops->init_card) | |
1621 | host->ops->init_card(host, card); | |
1622 | ||
7ea239d9 | 1623 | /* |
af517150 | 1624 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1625 | */ |
af517150 DB |
1626 | if (!mmc_host_is_spi(host)) { |
1627 | err = mmc_set_relative_addr(card); | |
1628 | if (err) | |
1629 | goto free_card; | |
7ea239d9 | 1630 | |
af517150 DB |
1631 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1632 | } | |
7ea239d9 | 1633 | |
6abaa0c9 PO |
1634 | if (!oldcard) { |
1635 | /* | |
1636 | * Fetch CSD from card. | |
1637 | */ | |
1638 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1639 | if (err) |
6abaa0c9 | 1640 | goto free_card; |
7ea239d9 | 1641 | |
bd766312 | 1642 | err = mmc_decode_csd(card); |
adf66a0d | 1643 | if (err) |
bd766312 PO |
1644 | goto free_card; |
1645 | err = mmc_decode_cid(card); | |
adf66a0d | 1646 | if (err) |
bd766312 | 1647 | goto free_card; |
6abaa0c9 | 1648 | } |
7ea239d9 | 1649 | |
3d705d14 SH |
1650 | /* |
1651 | * handling only for cards supporting DSR and hosts requesting | |
1652 | * DSR configuration | |
1653 | */ | |
1654 | if (card->csd.dsr_imp && host->dsr_req) | |
1655 | mmc_set_dsr(host); | |
1656 | ||
7ea239d9 | 1657 | /* |
89a73cf5 | 1658 | * Select card, as all following commands rely on that. |
7ea239d9 | 1659 | */ |
af517150 DB |
1660 | if (!mmc_host_is_spi(host)) { |
1661 | err = mmc_select_card(card); | |
1662 | if (err) | |
1663 | goto free_card; | |
1664 | } | |
7ea239d9 | 1665 | |
6abaa0c9 | 1666 | if (!oldcard) { |
076ec38a UH |
1667 | /* Read extended CSD. */ |
1668 | err = mmc_read_ext_csd(card); | |
17b0429d | 1669 | if (err) |
6abaa0c9 | 1670 | goto free_card; |
b676f039 | 1671 | |
87e88659 MY |
1672 | /* |
1673 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1674 | * addressing. Handle the case of <2GB cards needing sector |
1675 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1676 | * ocr register has bit 30 set for sector addressing. | |
1677 | */ | |
87e88659 | 1678 | if (rocr & BIT(30)) |
b676f039 PR |
1679 | mmc_card_set_blockaddr(card); |
1680 | ||
dfe86cba AH |
1681 | /* Erase size depends on CSD and Extended CSD */ |
1682 | mmc_set_erase_size(card); | |
6abaa0c9 | 1683 | } |
7ea239d9 | 1684 | |
d2a47176 UH |
1685 | /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ |
1686 | if (card->ext_csd.rev >= 3) { | |
709de99d | 1687 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1688 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1689 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1690 | |
1691 | if (err && err != -EBADMSG) | |
1692 | goto free_card; | |
1693 | ||
1694 | if (err) { | |
1695 | err = 0; | |
1696 | /* | |
1697 | * Just disable enhanced area off & sz | |
1698 | * will try to enable ERASE_GROUP_DEF | |
1699 | * during next time reinit | |
1700 | */ | |
1701 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1702 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1703 | } else { | |
1704 | card->ext_csd.erase_group_def = 1; | |
1705 | /* | |
1706 | * enable ERASE_GRP_DEF successfully. | |
1707 | * This will affect the erase size, so | |
1708 | * here need to reset erase size | |
1709 | */ | |
1710 | mmc_set_erase_size(card); | |
1711 | } | |
1712 | } | |
1713 | ||
41e2a489 PR |
1714 | /* |
1715 | * Ensure eMMC user default partition is enabled | |
1716 | */ | |
371a689f AW |
1717 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1718 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1719 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1720 | card->ext_csd.part_config, | |
1721 | card->ext_csd.part_time); | |
1722 | if (err && err != -EBADMSG) | |
1723 | goto free_card; | |
41e2a489 PR |
1724 | } |
1725 | ||
bec8726a | 1726 | /* |
43235679 | 1727 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1728 | */ |
43235679 | 1729 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1730 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1731 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1732 | EXT_CSD_POWER_ON, | |
1733 | card->ext_csd.generic_cmd6_time); | |
1734 | if (err && err != -EBADMSG) | |
1735 | goto free_card; | |
bec8726a | 1736 | |
96a85d54 G |
1737 | /* |
1738 | * The err can be -EBADMSG or 0, | |
1739 | * so check for success and update the flag | |
1740 | */ | |
1741 | if (!err) | |
e6c08586 | 1742 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1743 | } |
bec8726a | 1744 | |
01904ff7 AA |
1745 | /* set erase_arg */ |
1746 | if (mmc_can_discard(card)) | |
1747 | card->erase_arg = MMC_DISCARD_ARG; | |
1748 | else if (mmc_can_trim(card)) | |
1749 | card->erase_arg = MMC_TRIM_ARG; | |
1750 | else | |
1751 | card->erase_arg = MMC_ERASE_ARG; | |
1752 | ||
89a73cf5 | 1753 | /* |
577fb131 | 1754 | * Select timing interface |
dfc13e84 | 1755 | */ |
577fb131 SJ |
1756 | err = mmc_select_timing(card); |
1757 | if (err) | |
1758 | goto free_card; | |
dfc13e84 | 1759 | |
a4924c71 | 1760 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1761 | err = mmc_hs200_tuning(card); |
1762 | if (err) | |
4b75bffc | 1763 | goto free_card; |
0a5b6438 SJ |
1764 | |
1765 | err = mmc_select_hs400(card); | |
1766 | if (err) | |
4b75bffc | 1767 | goto free_card; |
773dc118 | 1768 | } else if (!mmc_card_hs400es(card)) { |
577fb131 SJ |
1769 | /* Select the desired bus width optionally */ |
1770 | err = mmc_select_bus_width(card); | |
3d4ef329 | 1771 | if (err > 0 && mmc_card_hs(card)) { |
577fb131 SJ |
1772 | err = mmc_select_hs_ddr(card); |
1773 | if (err) | |
4b75bffc | 1774 | goto free_card; |
ef0b27d4 | 1775 | } |
89a73cf5 PO |
1776 | } |
1777 | ||
2385049d SJ |
1778 | /* |
1779 | * Choose the power class with selected bus interface | |
1780 | */ | |
1781 | mmc_select_powerclass(card); | |
1782 | ||
52d0974e SJ |
1783 | /* |
1784 | * Enable HPI feature (if supported) | |
1785 | */ | |
1786 | if (card->ext_csd.hpi) { | |
1787 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1788 | EXT_CSD_HPI_MGMT, 1, | |
1789 | card->ext_csd.generic_cmd6_time); | |
1790 | if (err && err != -EBADMSG) | |
1791 | goto free_card; | |
1792 | if (err) { | |
6606110d JP |
1793 | pr_warn("%s: Enabling HPI failed\n", |
1794 | mmc_hostname(card->host)); | |
a0741ba4 | 1795 | card->ext_csd.hpi_en = 0; |
52d0974e | 1796 | err = 0; |
a0741ba4 | 1797 | } else { |
52d0974e | 1798 | card->ext_csd.hpi_en = 1; |
a0741ba4 | 1799 | } |
52d0974e SJ |
1800 | } |
1801 | ||
881d1c25 | 1802 | /* |
e3ae3401 UH |
1803 | * If cache size is higher than 0, this indicates the existence of cache |
1804 | * and it can be turned on. Note that some eMMCs from Micron has been | |
1805 | * reported to need ~800 ms timeout, while enabling the cache after | |
1806 | * sudden power failure tests. Let's extend the timeout to a minimum of | |
1807 | * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. | |
881d1c25 | 1808 | */ |
ba9f39a7 | 1809 | if (card->ext_csd.cache_size > 0) { |
e3ae3401 UH |
1810 | unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; |
1811 | ||
1812 | timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); | |
881d1c25 | 1813 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
e3ae3401 | 1814 | EXT_CSD_CACHE_CTRL, 1, timeout_ms); |
881d1c25 SJ |
1815 | if (err && err != -EBADMSG) |
1816 | goto free_card; | |
1817 | ||
1818 | /* | |
1819 | * Only if no error, cache is turned on successfully. | |
1820 | */ | |
8bc0678b | 1821 | if (err) { |
6606110d JP |
1822 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1823 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1824 | card->ext_csd.cache_ctrl = 0; |
1825 | err = 0; | |
1826 | } else { | |
1827 | card->ext_csd.cache_ctrl = 1; | |
1828 | } | |
881d1c25 SJ |
1829 | } |
1830 | ||
98d4f780 AH |
1831 | /* |
1832 | * Enable Command Queue if supported. Note that Packed Commands cannot | |
1833 | * be used with Command Queue. | |
1834 | */ | |
1835 | card->ext_csd.cmdq_en = false; | |
1836 | if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { | |
1837 | err = mmc_cmdq_enable(card); | |
1838 | if (err && err != -EBADMSG) | |
1839 | goto free_card; | |
1840 | if (err) { | |
1841 | pr_warn("%s: Enabling CMDQ failed\n", | |
1842 | mmc_hostname(card->host)); | |
1843 | card->ext_csd.cmdq_support = false; | |
1844 | card->ext_csd.cmdq_depth = 0; | |
1845 | err = 0; | |
1846 | } | |
1847 | } | |
9d4579a8 AH |
1848 | /* |
1849 | * In some cases (e.g. RPMB or mmc_test), the Command Queue must be | |
1850 | * disabled for a time, so a flag is needed to indicate to re-enable the | |
1851 | * Command Queue. | |
1852 | */ | |
1853 | card->reenable_cmdq = card->ext_csd.cmdq_en; | |
1854 | ||
f690f440 AH |
1855 | if (card->ext_csd.cmdq_en && !host->cqe_enabled) { |
1856 | err = host->cqe_ops->cqe_enable(host, card); | |
1857 | if (err) { | |
1858 | pr_err("%s: Failed to enable CQE, error %d\n", | |
1859 | mmc_hostname(host), err); | |
1860 | } else { | |
1861 | host->cqe_enabled = true; | |
1862 | pr_info("%s: Command Queue Engine enabled\n", | |
1863 | mmc_hostname(host)); | |
1864 | } | |
1865 | } | |
1866 | ||
247cfe53 KR |
1867 | if (host->caps2 & MMC_CAP2_AVOID_3_3V && |
1868 | host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { | |
1869 | pr_err("%s: Host failed to negotiate down from 3.3V\n", | |
1870 | mmc_hostname(host)); | |
1871 | err = -EINVAL; | |
1872 | goto free_card; | |
1873 | } | |
1874 | ||
6abaa0c9 PO |
1875 | if (!oldcard) |
1876 | host->card = card; | |
1877 | ||
17b0429d | 1878 | return 0; |
6abaa0c9 PO |
1879 | |
1880 | free_card: | |
1881 | if (!oldcard) | |
1882 | mmc_remove_card(card); | |
1883 | err: | |
adf66a0d | 1884 | return err; |
6abaa0c9 PO |
1885 | } |
1886 | ||
07a68216 UH |
1887 | static int mmc_can_sleep(struct mmc_card *card) |
1888 | { | |
1889 | return (card && card->ext_csd.rev >= 3); | |
1890 | } | |
1891 | ||
1892 | static int mmc_sleep(struct mmc_host *host) | |
1893 | { | |
c7836d15 | 1894 | struct mmc_command cmd = {}; |
07a68216 | 1895 | struct mmc_card *card = host->card; |
cb962e04 | 1896 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1897 | int err; |
1898 | ||
436f8daa AH |
1899 | /* Re-tuning can't be done once the card is deselected */ |
1900 | mmc_retune_hold(host); | |
1901 | ||
07a68216 UH |
1902 | err = mmc_deselect_cards(host); |
1903 | if (err) | |
436f8daa | 1904 | goto out_release; |
07a68216 UH |
1905 | |
1906 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1907 | cmd.arg = card->rca << 16; | |
1908 | cmd.arg |= 1 << 15; | |
1909 | ||
cb962e04 UH |
1910 | /* |
1911 | * If the max_busy_timeout of the host is specified, validate it against | |
1912 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1913 | * from doing hw busy detection, which is done by converting to a R1 | |
1914 | * response instead of a R1B. | |
1915 | */ | |
1916 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1917 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1918 | } else { | |
1919 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1920 | cmd.busy_timeout = timeout_ms; | |
1921 | } | |
1922 | ||
07a68216 UH |
1923 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1924 | if (err) | |
436f8daa | 1925 | goto out_release; |
07a68216 UH |
1926 | |
1927 | /* | |
1928 | * If the host does not wait while the card signals busy, then we will | |
1929 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1930 | * SEND_STATUS command to poll the status because that command (and most | |
1931 | * others) is invalid while the card sleeps. | |
1932 | */ | |
cb962e04 UH |
1933 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1934 | mmc_delay(timeout_ms); | |
07a68216 | 1935 | |
436f8daa AH |
1936 | out_release: |
1937 | mmc_retune_release(host); | |
07a68216 UH |
1938 | return err; |
1939 | } | |
1940 | ||
e6c08586 UH |
1941 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1942 | { | |
1943 | return card && | |
1944 | mmc_card_mmc(card) && | |
1945 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1946 | } | |
1947 | ||
1948 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1949 | { | |
1950 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1951 | int err; | |
1952 | ||
1953 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1954 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1955 | timeout = card->ext_csd.power_off_longtime; | |
1956 | ||
878e200b UH |
1957 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1958 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
aa33ce3c | 1959 | notify_type, timeout, 0, true, false, false); |
e6c08586 UH |
1960 | if (err) |
1961 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1962 | mmc_hostname(card->host), timeout); | |
1963 | ||
1964 | /* Disable the power off notification after the switch operation. */ | |
1965 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1966 | ||
1967 | return err; | |
1968 | } | |
1969 | ||
6abaa0c9 PO |
1970 | /* |
1971 | * Host is being removed. Free up the current card. | |
1972 | */ | |
1973 | static void mmc_remove(struct mmc_host *host) | |
1974 | { | |
6abaa0c9 PO |
1975 | mmc_remove_card(host->card); |
1976 | host->card = NULL; | |
1977 | } | |
1978 | ||
d3049504 AH |
1979 | /* |
1980 | * Card detection - card is alive. | |
1981 | */ | |
1982 | static int mmc_alive(struct mmc_host *host) | |
1983 | { | |
1984 | return mmc_send_status(host->card, NULL); | |
1985 | } | |
1986 | ||
6abaa0c9 PO |
1987 | /* |
1988 | * Card detection callback from host. | |
1989 | */ | |
1990 | static void mmc_detect(struct mmc_host *host) | |
1991 | { | |
1992 | int err; | |
1993 | ||
6c0cedd1 | 1994 | mmc_get_card(host->card, NULL); |
6abaa0c9 PO |
1995 | |
1996 | /* | |
1997 | * Just check if our card has been removed. | |
1998 | */ | |
d3049504 | 1999 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 2000 | |
6c0cedd1 | 2001 | mmc_put_card(host->card, NULL); |
6abaa0c9 | 2002 | |
17b0429d | 2003 | if (err) { |
4101c16a | 2004 | mmc_remove(host); |
6abaa0c9 PO |
2005 | |
2006 | mmc_claim_host(host); | |
2007 | mmc_detach_bus(host); | |
7f7e4129 | 2008 | mmc_power_off(host); |
6abaa0c9 PO |
2009 | mmc_release_host(host); |
2010 | } | |
2011 | } | |
2012 | ||
03d071fc | 2013 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 2014 | { |
c3805467 | 2015 | int err = 0; |
03d071fc UH |
2016 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
2017 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 2018 | |
6abaa0c9 | 2019 | mmc_claim_host(host); |
881d926d | 2020 | |
9ec775f7 UH |
2021 | if (mmc_card_suspended(host->card)) |
2022 | goto out; | |
2023 | ||
10e5d965 | 2024 | err = mmc_flush_cache(host->card); |
881d926d ME |
2025 | if (err) |
2026 | goto out; | |
2027 | ||
43235679 | 2028 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 2029 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 2030 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
2031 | else if (mmc_can_sleep(host->card)) |
2032 | err = mmc_sleep(host); | |
e6c08586 | 2033 | else if (!mmc_host_is_spi(host)) |
85e727ed | 2034 | err = mmc_deselect_cards(host); |
95cdfb72 | 2035 | |
9ec775f7 | 2036 | if (!err) { |
74590263 | 2037 | mmc_power_off(host); |
9ec775f7 UH |
2038 | mmc_card_set_suspended(host->card); |
2039 | } | |
881d926d ME |
2040 | out: |
2041 | mmc_release_host(host); | |
c3805467 | 2042 | return err; |
6abaa0c9 | 2043 | } |
7ea239d9 | 2044 | |
03d071fc | 2045 | /* |
0cb403a2 | 2046 | * Suspend callback |
03d071fc UH |
2047 | */ |
2048 | static int mmc_suspend(struct mmc_host *host) | |
2049 | { | |
0cb403a2 UH |
2050 | int err; |
2051 | ||
2052 | err = _mmc_suspend(host, true); | |
2053 | if (!err) { | |
2054 | pm_runtime_disable(&host->card->dev); | |
2055 | pm_runtime_set_suspended(&host->card->dev); | |
2056 | } | |
2057 | ||
2058 | return err; | |
03d071fc UH |
2059 | } |
2060 | ||
6abaa0c9 | 2061 | /* |
6abaa0c9 PO |
2062 | * This function tries to determine if the same card is still present |
2063 | * and, if so, restore all state to it. | |
2064 | */ | |
0cb403a2 | 2065 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 2066 | { |
9ec775f7 | 2067 | int err = 0; |
6abaa0c9 | 2068 | |
6abaa0c9 | 2069 | mmc_claim_host(host); |
9ec775f7 UH |
2070 | |
2071 | if (!mmc_card_suspended(host->card)) | |
2072 | goto out; | |
2073 | ||
69041150 | 2074 | mmc_power_up(host, host->card->ocr); |
69041150 | 2075 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 2076 | mmc_card_clr_suspended(host->card); |
2986d0bf | 2077 | |
9ec775f7 UH |
2078 | out: |
2079 | mmc_release_host(host); | |
95cdfb72 | 2080 | return err; |
6abaa0c9 PO |
2081 | } |
2082 | ||
9ec775f7 UH |
2083 | /* |
2084 | * Shutdown callback | |
2085 | */ | |
2086 | static int mmc_shutdown(struct mmc_host *host) | |
2087 | { | |
2088 | int err = 0; | |
2089 | ||
2090 | /* | |
2091 | * In a specific case for poweroff notify, we need to resume the card | |
2092 | * before we can shutdown it properly. | |
2093 | */ | |
2094 | if (mmc_can_poweroff_notify(host->card) && | |
2095 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 2096 | err = _mmc_resume(host); |
9ec775f7 UH |
2097 | |
2098 | if (!err) | |
2099 | err = _mmc_suspend(host, false); | |
2100 | ||
2101 | return err; | |
2102 | } | |
c4d770d7 | 2103 | |
0cb403a2 UH |
2104 | /* |
2105 | * Callback for resume. | |
2106 | */ | |
2107 | static int mmc_resume(struct mmc_host *host) | |
2108 | { | |
0cb403a2 | 2109 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 2110 | return 0; |
0cb403a2 UH |
2111 | } |
2112 | ||
c4d770d7 UH |
2113 | /* |
2114 | * Callback for runtime_suspend. | |
2115 | */ | |
2116 | static int mmc_runtime_suspend(struct mmc_host *host) | |
2117 | { | |
2118 | int err; | |
2119 | ||
2120 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
2121 | return 0; | |
2122 | ||
0cb403a2 | 2123 | err = _mmc_suspend(host, true); |
0cc81a8c | 2124 | if (err) |
f42cf8d6 | 2125 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 2126 | mmc_hostname(host), err); |
c4d770d7 | 2127 | |
c4d770d7 UH |
2128 | return err; |
2129 | } | |
2130 | ||
2131 | /* | |
2132 | * Callback for runtime_resume. | |
2133 | */ | |
2134 | static int mmc_runtime_resume(struct mmc_host *host) | |
2135 | { | |
2136 | int err; | |
2137 | ||
0cb403a2 | 2138 | err = _mmc_resume(host); |
520322d9 | 2139 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2140 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2141 | mmc_hostname(host), err); |
2142 | ||
c4d770d7 UH |
2143 | return 0; |
2144 | } | |
2145 | ||
88bed3a6 | 2146 | static int mmc_can_reset(struct mmc_card *card) |
f855a371 JR |
2147 | { |
2148 | u8 rst_n_function; | |
2149 | ||
2150 | rst_n_function = card->ext_csd.rst_n_function; | |
2151 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2152 | return 0; | |
2153 | return 1; | |
2154 | } | |
f855a371 | 2155 | |
3a3db603 | 2156 | static int _mmc_hw_reset(struct mmc_host *host) |
f855a371 JR |
2157 | { |
2158 | struct mmc_card *card = host->card; | |
f855a371 | 2159 | |
437db4c6 AH |
2160 | /* |
2161 | * In the case of recovery, we can't expect flushing the cache to work | |
2162 | * always, but we have a go and ignore errors. | |
2163 | */ | |
2164 | mmc_flush_cache(host->card); | |
2165 | ||
4e6c7178 GG |
2166 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
2167 | mmc_can_reset(card)) { | |
2168 | /* If the card accept RST_n signal, send it. */ | |
2169 | mmc_set_clock(host, host->f_init); | |
2170 | host->ops->hw_reset(host); | |
2171 | /* Set initial state and call mmc_set_ios */ | |
2172 | mmc_set_initial_state(host); | |
2173 | } else { | |
2174 | /* Do a brute force power cycle */ | |
2175 | mmc_power_cycle(host, card->ocr); | |
52c8212d | 2176 | mmc_pwrseq_reset(host); |
4e6c7178 | 2177 | } |
364549dd | 2178 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2179 | } |
2180 | ||
6abaa0c9 PO |
2181 | static const struct mmc_bus_ops mmc_ops = { |
2182 | .remove = mmc_remove, | |
2183 | .detect = mmc_detect, | |
2184 | .suspend = mmc_suspend, | |
2185 | .resume = mmc_resume, | |
c4d770d7 UH |
2186 | .runtime_suspend = mmc_runtime_suspend, |
2187 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2188 | .alive = mmc_alive, |
486fdbbc | 2189 | .shutdown = mmc_shutdown, |
3a3db603 | 2190 | .hw_reset = _mmc_hw_reset, |
6abaa0c9 PO |
2191 | }; |
2192 | ||
2193 | /* | |
2194 | * Starting point for MMC card init. | |
2195 | */ | |
807e8e40 | 2196 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2197 | { |
2198 | int err; | |
69041150 | 2199 | u32 ocr, rocr; |
6abaa0c9 | 2200 | |
d84075c8 | 2201 | WARN_ON(!host->claimed); |
6abaa0c9 | 2202 | |
44669034 SNX |
2203 | /* Set correct bus mode for MMC before attempting attach */ |
2204 | if (!mmc_host_is_spi(host)) | |
2205 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2206 | ||
807e8e40 AR |
2207 | err = mmc_send_op_cond(host, 0, &ocr); |
2208 | if (err) | |
2209 | return err; | |
2210 | ||
2501c917 | 2211 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2212 | if (host->ocr_avail_mmc) |
2213 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2214 | |
af517150 DB |
2215 | /* |
2216 | * We need to get OCR a different way for SPI. | |
2217 | */ | |
2218 | if (mmc_host_is_spi(host)) { | |
2219 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2220 | if (err) | |
2221 | goto err; | |
2222 | } | |
2223 | ||
69041150 | 2224 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2225 | |
2226 | /* | |
2227 | * Can we support the voltage of the card? | |
2228 | */ | |
69041150 | 2229 | if (!rocr) { |
109b5bed | 2230 | err = -EINVAL; |
6abaa0c9 | 2231 | goto err; |
109b5bed | 2232 | } |
6abaa0c9 PO |
2233 | |
2234 | /* | |
2235 | * Detect and init the card. | |
2236 | */ | |
69041150 | 2237 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2238 | if (err) |
6abaa0c9 PO |
2239 | goto err; |
2240 | ||
2241 | mmc_release_host(host); | |
4101c16a | 2242 | err = mmc_add_card(host->card); |
7ea239d9 | 2243 | if (err) |
2986d0bf | 2244 | goto remove_card; |
7ea239d9 | 2245 | |
2860d060 | 2246 | mmc_claim_host(host); |
7ea239d9 PO |
2247 | return 0; |
2248 | ||
2986d0bf | 2249 | remove_card: |
6abaa0c9 | 2250 | mmc_remove_card(host->card); |
2986d0bf | 2251 | mmc_claim_host(host); |
807e8e40 | 2252 | host->card = NULL; |
7ea239d9 PO |
2253 | err: |
2254 | mmc_detach_bus(host); | |
7ea239d9 | 2255 | |
a3c76eb9 | 2256 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2257 | mmc_hostname(host), err); |
2258 | ||
adf66a0d | 2259 | return err; |
7ea239d9 | 2260 | } |