Commit | Line | Data |
---|---|---|
7ea239d9 | 1 | /* |
70f10482 | 2 | * linux/drivers/mmc/core/mmc.c |
7ea239d9 PO |
3 | * |
4 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. | |
5 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. | |
6 | * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/err.h> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
0205a904 | 15 | #include <linux/stat.h> |
0cb403a2 | 16 | #include <linux/pm_runtime.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" | |
4101c16a | 23 | #include "bus.h" |
7ea239d9 | 24 | #include "mmc_ops.h" |
4c4cb171 | 25 | #include "sd_ops.h" |
7ea239d9 PO |
26 | |
27 | static const unsigned int tran_exp[] = { | |
28 | 10000, 100000, 1000000, 10000000, | |
29 | 0, 0, 0, 0 | |
30 | }; | |
31 | ||
32 | static const unsigned char tran_mant[] = { | |
33 | 0, 10, 12, 13, 15, 20, 25, 30, | |
34 | 35, 40, 45, 50, 55, 60, 70, 80, | |
35 | }; | |
36 | ||
37 | static const unsigned int tacc_exp[] = { | |
38 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
39 | }; | |
40 | ||
41 | static const unsigned int tacc_mant[] = { | |
42 | 0, 10, 12, 13, 15, 20, 25, 30, | |
43 | 35, 40, 45, 50, 55, 60, 70, 80, | |
44 | }; | |
45 | ||
46 | #define UNSTUFF_BITS(resp,start,size) \ | |
47 | ({ \ | |
48 | const int __size = size; \ | |
49 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
50 | const int __off = 3 - ((start) / 32); \ | |
51 | const int __shft = (start) & 31; \ | |
52 | u32 __res; \ | |
53 | \ | |
54 | __res = resp[__off] >> __shft; \ | |
55 | if (__size + __shft > 32) \ | |
56 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
57 | __res & __mask; \ | |
58 | }) | |
59 | ||
60 | /* | |
61 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
62 | */ | |
bd766312 | 63 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
64 | { |
65 | u32 *resp = card->raw_cid; | |
66 | ||
67 | /* | |
68 | * The selection of the format here is based upon published | |
69 | * specs from sandisk and from what people have reported. | |
70 | */ | |
71 | switch (card->csd.mmca_vsn) { | |
72 | case 0: /* MMC v1.0 - v1.2 */ | |
73 | case 1: /* MMC v1.4 */ | |
74 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
75 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
76 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
77 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
78 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
79 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
80 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
81 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
82 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
83 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
84 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
85 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
86 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
87 | break; | |
88 | ||
89 | case 2: /* MMC v2.0 - v2.2 */ | |
90 | case 3: /* MMC v3.1 - v3.3 */ | |
91 | case 4: /* MMC v4 */ | |
92 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
93 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
94 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
95 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
96 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
97 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
98 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
99 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 100 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
101 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
102 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
103 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
104 | break; | |
105 | ||
106 | default: | |
a3c76eb9 | 107 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 108 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 109 | return -EINVAL; |
7ea239d9 | 110 | } |
bd766312 PO |
111 | |
112 | return 0; | |
7ea239d9 PO |
113 | } |
114 | ||
dfe86cba AH |
115 | static void mmc_set_erase_size(struct mmc_card *card) |
116 | { | |
117 | if (card->ext_csd.erase_group_def & 1) | |
118 | card->erase_size = card->ext_csd.hc_erase_size; | |
119 | else | |
120 | card->erase_size = card->csd.erase_size; | |
121 | ||
122 | mmc_init_erase(card); | |
123 | } | |
124 | ||
7ea239d9 PO |
125 | /* |
126 | * Given a 128-bit response, decode to our card CSD structure. | |
127 | */ | |
bd766312 | 128 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
129 | { |
130 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 131 | unsigned int e, m, a, b; |
7ea239d9 PO |
132 | u32 *resp = card->raw_csd; |
133 | ||
134 | /* | |
135 | * We only understand CSD structure v1.1 and v1.2. | |
136 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 137 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 138 | */ |
6da24b78 KP |
139 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
140 | if (csd->structure == 0) { | |
a3c76eb9 | 141 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 142 | mmc_hostname(card->host), csd->structure); |
bd766312 | 143 | return -EINVAL; |
7ea239d9 PO |
144 | } |
145 | ||
146 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
147 | m = UNSTUFF_BITS(resp, 115, 4); | |
148 | e = UNSTUFF_BITS(resp, 112, 3); | |
149 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
150 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
151 | ||
152 | m = UNSTUFF_BITS(resp, 99, 4); | |
153 | e = UNSTUFF_BITS(resp, 96, 3); | |
154 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
155 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
156 | ||
157 | e = UNSTUFF_BITS(resp, 47, 3); | |
158 | m = UNSTUFF_BITS(resp, 62, 12); | |
159 | csd->capacity = (1 + m) << (e + 2); | |
160 | ||
161 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
162 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
163 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
164 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 165 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
166 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
167 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
168 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 169 | |
dfe86cba AH |
170 | if (csd->write_blkbits >= 9) { |
171 | a = UNSTUFF_BITS(resp, 42, 5); | |
172 | b = UNSTUFF_BITS(resp, 37, 5); | |
173 | csd->erase_size = (a + 1) * (b + 1); | |
174 | csd->erase_size <<= csd->write_blkbits - 9; | |
175 | } | |
176 | ||
bd766312 | 177 | return 0; |
7ea239d9 PO |
178 | } |
179 | ||
96cf5f02 SJ |
180 | static void mmc_select_card_type(struct mmc_card *card) |
181 | { | |
182 | struct mmc_host *host = card->host; | |
0a5b6438 | 183 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 184 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 185 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 186 | unsigned int avail_type = 0; |
96cf5f02 | 187 | |
2415c0ef SJ |
188 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
189 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 190 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
191 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
192 | } | |
96cf5f02 SJ |
193 | |
194 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 195 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 196 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
197 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
198 | } | |
96cf5f02 | 199 | |
2415c0ef SJ |
200 | if (caps & MMC_CAP_1_8V_DDR && |
201 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 202 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
203 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
204 | } | |
205 | ||
206 | if (caps & MMC_CAP_1_2V_DDR && | |
207 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
208 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
209 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
210 | } | |
96cf5f02 | 211 | |
2415c0ef SJ |
212 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
213 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 214 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
215 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
216 | } | |
217 | ||
218 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
219 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 220 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
221 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
222 | } | |
96cf5f02 | 223 | |
0a5b6438 SJ |
224 | if (caps2 & MMC_CAP2_HS400_1_8V && |
225 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
226 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
227 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
228 | } | |
229 | ||
230 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
231 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
232 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
233 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
234 | } | |
235 | ||
96cf5f02 | 236 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 237 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 238 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
239 | } |
240 | ||
b4493eea GS |
241 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
242 | { | |
994324bb GS |
243 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
244 | ||
245 | /* | |
246 | * Disable these attributes by default | |
247 | */ | |
248 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
249 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
250 | |
251 | /* | |
252 | * Enhanced area feature support -- check whether the eMMC | |
253 | * card has the Enhanced area enabled. If so, export enhanced | |
254 | * area offset and size to user by adding sysfs interface. | |
255 | */ | |
256 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
257 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
258 | if (card->ext_csd.partition_setting_completed) { |
259 | hc_erase_grp_sz = | |
260 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
261 | hc_wp_grp_sz = | |
262 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 263 | |
994324bb GS |
264 | /* |
265 | * calculate the enhanced data area offset, in bytes | |
266 | */ | |
267 | card->ext_csd.enhanced_area_offset = | |
268 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
269 | (ext_csd[137] << 8) + ext_csd[136]; | |
270 | if (mmc_card_blockaddr(card)) | |
271 | card->ext_csd.enhanced_area_offset <<= 9; | |
272 | /* | |
273 | * calculate the enhanced data area size, in kilobytes | |
274 | */ | |
275 | card->ext_csd.enhanced_area_size = | |
276 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
277 | ext_csd[140]; | |
278 | card->ext_csd.enhanced_area_size *= | |
279 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
280 | card->ext_csd.enhanced_area_size <<= 9; | |
281 | } else { | |
282 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
283 | mmc_hostname(card->host)); | |
284 | } | |
b4493eea GS |
285 | } |
286 | } | |
287 | ||
288 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
289 | { | |
b4493eea | 290 | int idx; |
994324bb GS |
291 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
292 | unsigned int part_size; | |
b4493eea GS |
293 | |
294 | /* | |
295 | * General purpose partition feature support -- | |
296 | * If ext_csd has the size of general purpose partitions, | |
297 | * set size, part_cfg, partition name in mmc_part. | |
298 | */ | |
299 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
300 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
301 | hc_erase_grp_sz = |
302 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
303 | hc_wp_grp_sz = | |
304 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
305 | |
306 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
307 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
308 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
309 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
310 | continue; | |
994324bb GS |
311 | if (card->ext_csd.partition_setting_completed == 0) { |
312 | pr_warn("%s: has partition size defined without partition complete\n", | |
313 | mmc_hostname(card->host)); | |
314 | break; | |
315 | } | |
b4493eea GS |
316 | part_size = |
317 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
318 | << 16) + | |
319 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
320 | << 8) + | |
321 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
322 | part_size *= (size_t)(hc_erase_grp_sz * | |
323 | hc_wp_grp_sz); | |
324 | mmc_part_add(card, part_size << 19, | |
325 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
326 | "gp%d", idx, false, | |
327 | MMC_BLK_DATA_AREA_GP); | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
08ee80cc PR |
332 | /* |
333 | * Decode extended CSD. | |
334 | */ | |
076ec38a | 335 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 336 | { |
e0c368d5 NJ |
337 | int err = 0, idx; |
338 | unsigned int part_size; | |
08ee80cc | 339 | |
6da24b78 | 340 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 341 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 342 | if (card->csd.structure == 3) { |
f39b2dd9 | 343 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 344 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 345 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 346 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
347 | err = -EINVAL; |
348 | goto out; | |
349 | } | |
350 | } | |
351 | ||
03a59437 RI |
352 | /* |
353 | * The EXT_CSD format is meant to be forward compatible. As long | |
354 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
355 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
356 | */ | |
b1ebe384 | 357 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 358 | |
f39b2dd9 PR |
359 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
360 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
361 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
362 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 363 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
364 | card->ext_csd.sectors = |
365 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
366 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
367 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
368 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
369 | |
370 | /* Cards with density > 2GiB are sector addressed */ | |
371 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
372 | mmc_card_set_blockaddr(card); |
373 | } | |
96cf5f02 | 374 | |
f39b2dd9 | 375 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 376 | mmc_select_card_type(card); |
7ea239d9 | 377 | |
f39b2dd9 PR |
378 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
379 | card->ext_csd.raw_erase_timeout_mult = | |
380 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
381 | card->ext_csd.raw_hc_erase_grp_size = | |
382 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
383 | if (card->ext_csd.rev >= 3) { |
384 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
385 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
386 | ||
387 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
388 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
389 | |
390 | /* Sleep / awake timeout in 100ns units */ | |
391 | if (sa_shift > 0 && sa_shift <= 0x17) | |
392 | card->ext_csd.sa_timeout = | |
393 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
394 | card->ext_csd.erase_group_def = |
395 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
396 | card->ext_csd.hc_erase_timeout = 300 * | |
397 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
398 | card->ext_csd.hc_erase_size = | |
399 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
400 | |
401 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
402 | |
403 | /* | |
404 | * There are two boot regions of equal size, defined in | |
405 | * multiples of 128K. | |
406 | */ | |
e0c368d5 NJ |
407 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
408 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
409 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
410 | mmc_part_add(card, part_size, | |
411 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
412 | "boot%d", idx, true, |
413 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
414 | } |
415 | } | |
dfe86cba AH |
416 | } |
417 | ||
f39b2dd9 | 418 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 419 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
420 | card->ext_csd.raw_sec_trim_mult = |
421 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
422 | card->ext_csd.raw_sec_erase_mult = | |
423 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
424 | card->ext_csd.raw_sec_feature_support = | |
425 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
426 | card->ext_csd.raw_trim_mult = | |
427 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 428 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 429 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
430 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
431 | EXT_CSD_PART_SETTING_COMPLETED) | |
432 | card->ext_csd.partition_setting_completed = 1; | |
433 | else | |
434 | card->ext_csd.partition_setting_completed = 0; | |
435 | ||
b4493eea | 436 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 437 | |
b4493eea | 438 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 439 | |
dfe86cba AH |
440 | card->ext_csd.sec_trim_mult = |
441 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
442 | card->ext_csd.sec_erase_mult = | |
443 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
444 | card->ext_csd.sec_feature_support = | |
445 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
446 | card->ext_csd.trim_timeout = 300 * | |
447 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
448 | |
449 | /* | |
450 | * Note that the call to mmc_part_add above defaults to read | |
451 | * only. If this default assumption is changed, the call must | |
452 | * take into account the value of boot_locked below. | |
453 | */ | |
454 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
455 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
456 | |
457 | /* Save power class values */ | |
458 | card->ext_csd.raw_pwr_cl_52_195 = | |
459 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
460 | card->ext_csd.raw_pwr_cl_26_195 = | |
461 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
462 | card->ext_csd.raw_pwr_cl_52_360 = | |
463 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
464 | card->ext_csd.raw_pwr_cl_26_360 = | |
465 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
466 | card->ext_csd.raw_pwr_cl_200_195 = | |
467 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
468 | card->ext_csd.raw_pwr_cl_200_360 = | |
469 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
470 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
471 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
472 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
473 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
474 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
475 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
476 | } |
477 | ||
b2499518 | 478 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
479 | /* Adjust production date as per JEDEC JESD84-B451 */ |
480 | if (card->cid.year < 2010) | |
481 | card->cid.year += 16; | |
482 | ||
950d56ac JC |
483 | /* check whether the eMMC card supports BKOPS */ |
484 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
485 | card->ext_csd.bkops = 1; | |
486 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
487 | card->ext_csd.raw_bkops_status = | |
488 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
489 | if (!card->ext_csd.bkops_en) | |
490 | pr_info("%s: BKOPS_EN bit is not set\n", | |
491 | mmc_hostname(card->host)); | |
492 | } | |
493 | ||
eb0d8f13 JC |
494 | /* check whether the eMMC card supports HPI */ |
495 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
496 | card->ext_csd.hpi = 1; | |
497 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
498 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
499 | else | |
500 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
501 | /* | |
502 | * Indicate the maximum timeout to close | |
503 | * a command interrupted by HPI | |
504 | */ | |
505 | card->ext_csd.out_of_int_time = | |
506 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
507 | } | |
508 | ||
f4c5522b | 509 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 510 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
511 | |
512 | /* | |
513 | * RPMB regions are defined in multiples of 128K. | |
514 | */ | |
515 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 516 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
517 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
518 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
519 | "rpmb", 0, false, | |
520 | MMC_BLK_DATA_AREA_RPMB); | |
521 | } | |
b2499518 | 522 | } |
f4c5522b | 523 | |
5238acbe | 524 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
525 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
526 | card->erased_byte = 0xFF; | |
527 | else | |
528 | card->erased_byte = 0x0; | |
529 | ||
336c716a | 530 | /* eMMC v4.5 or later */ |
bec8726a | 531 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
532 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
533 | ||
b23cf0bd SJ |
534 | card->ext_csd.generic_cmd6_time = 10 * |
535 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
536 | card->ext_csd.power_off_longtime = 10 * |
537 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 538 | |
336c716a SJ |
539 | card->ext_csd.cache_size = |
540 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
541 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
542 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
543 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
544 | |
545 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
546 | card->ext_csd.data_sector_size = 4096; | |
547 | else | |
548 | card->ext_csd.data_sector_size = 512; | |
549 | ||
550 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
551 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
552 | card->ext_csd.data_tag_unit_size = | |
553 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
554 | (card->ext_csd.data_sector_size); | |
555 | } else { | |
556 | card->ext_csd.data_tag_unit_size = 0; | |
557 | } | |
abd9ac14 SJ |
558 | |
559 | card->ext_csd.max_packed_writes = | |
560 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
561 | card->ext_csd.max_packed_reads = | |
562 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
563 | } else { |
564 | card->ext_csd.data_sector_size = 512; | |
336c716a | 565 | } |
881d1c25 | 566 | |
0f762426 GG |
567 | /* eMMC v5 or later */ |
568 | if (card->ext_csd.rev >= 7) { | |
569 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
570 | MMC_FIRMWARE_LEN); | |
571 | card->ext_csd.ffu_capable = | |
572 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
573 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
574 | } | |
7ea239d9 | 575 | out: |
08ee80cc PR |
576 | return err; |
577 | } | |
578 | ||
076ec38a UH |
579 | static int mmc_read_ext_csd(struct mmc_card *card) |
580 | { | |
c197787c | 581 | u8 *ext_csd; |
076ec38a UH |
582 | int err; |
583 | ||
c197787c UH |
584 | if (!mmc_can_ext_csd(card)) |
585 | return 0; | |
586 | ||
076ec38a | 587 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
588 | if (err) { |
589 | /* If the host or the card can't do the switch, | |
590 | * fail more gracefully. */ | |
591 | if ((err != -EINVAL) | |
592 | && (err != -ENOSYS) | |
593 | && (err != -EFAULT)) | |
594 | return err; | |
595 | ||
596 | /* | |
597 | * High capacity cards should have this "magic" size | |
598 | * stored in their CSD. | |
599 | */ | |
600 | if (card->csd.capacity == (4096 * 512)) { | |
601 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
602 | mmc_hostname(card->host)); | |
603 | } else { | |
604 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
605 | mmc_hostname(card->host)); | |
606 | err = 0; | |
607 | } | |
608 | ||
076ec38a | 609 | return err; |
c197787c | 610 | } |
076ec38a UH |
611 | |
612 | err = mmc_decode_ext_csd(card, ext_csd); | |
613 | kfree(ext_csd); | |
614 | return err; | |
615 | } | |
616 | ||
f39b2dd9 | 617 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
618 | { |
619 | u8 *bw_ext_csd; | |
620 | int err; | |
621 | ||
f39b2dd9 PR |
622 | if (bus_width == MMC_BUS_WIDTH_1) |
623 | return 0; | |
624 | ||
08ee80cc | 625 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
626 | if (err) |
627 | return err; | |
08ee80cc | 628 | |
08ee80cc | 629 | /* only compare read only fields */ |
dd13b4ed | 630 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 631 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 632 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 633 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 634 | (card->ext_csd.rev == |
08ee80cc | 635 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 636 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 637 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 638 | (card->ext_csd.raw_card_type == |
08ee80cc | 639 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 640 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 641 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 642 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 643 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 644 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 645 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 646 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 647 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 648 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 649 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 650 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 651 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 652 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 653 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 654 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 655 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
656 | (card->ext_csd.raw_sectors[0] == |
657 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
658 | (card->ext_csd.raw_sectors[1] == | |
659 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
660 | (card->ext_csd.raw_sectors[2] == | |
661 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
662 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
663 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
664 | (card->ext_csd.raw_pwr_cl_52_195 == | |
665 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
666 | (card->ext_csd.raw_pwr_cl_26_195 == | |
667 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
668 | (card->ext_csd.raw_pwr_cl_52_360 == | |
669 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
670 | (card->ext_csd.raw_pwr_cl_26_360 == | |
671 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
672 | (card->ext_csd.raw_pwr_cl_200_195 == | |
673 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
674 | (card->ext_csd.raw_pwr_cl_200_360 == | |
675 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
676 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
677 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
678 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
679 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
680 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
681 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
682 | ||
08ee80cc PR |
683 | if (err) |
684 | err = -EINVAL; | |
685 | ||
00b41b58 | 686 | kfree(bw_ext_csd); |
7ea239d9 PO |
687 | return err; |
688 | } | |
689 | ||
51ec92e2 PO |
690 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
691 | card->raw_cid[2], card->raw_cid[3]); | |
692 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
693 | card->raw_csd[2], card->raw_csd[3]); | |
694 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
695 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
696 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 697 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
698 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
699 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
700 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
701 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 702 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 703 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
704 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
705 | card->ext_csd.enhanced_area_offset); | |
706 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
707 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
708 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 709 | |
0f762426 GG |
710 | static ssize_t mmc_fwrev_show(struct device *dev, |
711 | struct device_attribute *attr, | |
712 | char *buf) | |
713 | { | |
714 | struct mmc_card *card = mmc_dev_to_card(dev); | |
715 | ||
716 | if (card->ext_csd.rev < 7) { | |
717 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
718 | } else { | |
719 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
720 | card->ext_csd.fwrev); | |
721 | } | |
722 | } | |
723 | ||
724 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
725 | ||
51ec92e2 PO |
726 | static struct attribute *mmc_std_attrs[] = { |
727 | &dev_attr_cid.attr, | |
728 | &dev_attr_csd.attr, | |
729 | &dev_attr_date.attr, | |
dfe86cba AH |
730 | &dev_attr_erase_size.attr, |
731 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 732 | &dev_attr_fwrev.attr, |
0f762426 | 733 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
734 | &dev_attr_hwrev.attr, |
735 | &dev_attr_manfid.attr, | |
736 | &dev_attr_name.attr, | |
737 | &dev_attr_oemid.attr, | |
51e7e8b6 | 738 | &dev_attr_prv.attr, |
51ec92e2 | 739 | &dev_attr_serial.attr, |
709de99d CD |
740 | &dev_attr_enhanced_area_offset.attr, |
741 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
742 | &dev_attr_raw_rpmb_size_mult.attr, |
743 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
744 | NULL, |
745 | }; | |
d1e58212 | 746 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
747 | |
748 | static struct device_type mmc_type = { | |
d1e58212 | 749 | .groups = mmc_std_groups, |
51ec92e2 PO |
750 | }; |
751 | ||
b87d8dbf G |
752 | /* |
753 | * Select the PowerClass for the current bus width | |
754 | * If power class is defined for 4/8 bit bus in the | |
755 | * extended CSD register, select it by executing the | |
756 | * mmc_switch command. | |
757 | */ | |
2385049d SJ |
758 | static int __mmc_select_powerclass(struct mmc_card *card, |
759 | unsigned int bus_width) | |
b87d8dbf | 760 | { |
2385049d SJ |
761 | struct mmc_host *host = card->host; |
762 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 763 | unsigned int pwrclass_val = 0; |
2385049d | 764 | int err = 0; |
b87d8dbf | 765 | |
b87d8dbf G |
766 | switch (1 << host->ios.vdd) { |
767 | case MMC_VDD_165_195: | |
2385049d SJ |
768 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
769 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
770 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 771 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
772 | ext_csd->raw_pwr_cl_52_195 : |
773 | ext_csd->raw_pwr_cl_ddr_52_195; | |
774 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
775 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 776 | break; |
93fc5a47 SJ |
777 | case MMC_VDD_27_28: |
778 | case MMC_VDD_28_29: | |
779 | case MMC_VDD_29_30: | |
780 | case MMC_VDD_30_31: | |
781 | case MMC_VDD_31_32: | |
b87d8dbf G |
782 | case MMC_VDD_32_33: |
783 | case MMC_VDD_33_34: | |
784 | case MMC_VDD_34_35: | |
785 | case MMC_VDD_35_36: | |
2385049d SJ |
786 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
787 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
788 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 789 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
790 | ext_csd->raw_pwr_cl_52_360 : |
791 | ext_csd->raw_pwr_cl_ddr_52_360; | |
792 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
793 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
794 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
795 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
796 | break; |
797 | default: | |
6606110d JP |
798 | pr_warn("%s: Voltage range not supported for power class\n", |
799 | mmc_hostname(host)); | |
b87d8dbf G |
800 | return -EINVAL; |
801 | } | |
802 | ||
b87d8dbf G |
803 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
804 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
805 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
806 | else | |
807 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
808 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
809 | ||
810 | /* If the power class is different from the default value */ | |
811 | if (pwrclass_val > 0) { | |
812 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
813 | EXT_CSD_POWER_CLASS, | |
814 | pwrclass_val, | |
71fe3eb0 | 815 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
816 | } |
817 | ||
818 | return err; | |
819 | } | |
820 | ||
2385049d SJ |
821 | static int mmc_select_powerclass(struct mmc_card *card) |
822 | { | |
823 | struct mmc_host *host = card->host; | |
824 | u32 bus_width, ext_csd_bits; | |
825 | int err, ddr; | |
826 | ||
827 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 828 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
829 | return 0; |
830 | ||
831 | bus_width = host->ios.bus_width; | |
832 | /* Power class values are defined only for 4/8 bit bus */ | |
833 | if (bus_width == MMC_BUS_WIDTH_1) | |
834 | return 0; | |
835 | ||
836 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
837 | if (ddr) | |
838 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
839 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
840 | else | |
841 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
842 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
843 | ||
844 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
845 | if (err) | |
846 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
847 | mmc_hostname(host), 1 << bus_width, ddr); | |
848 | ||
849 | return err; | |
850 | } | |
851 | ||
a4924c71 | 852 | /* |
577fb131 | 853 | * Set the bus speed for the selected speed mode. |
a4924c71 | 854 | */ |
577fb131 SJ |
855 | static void mmc_set_bus_speed(struct mmc_card *card) |
856 | { | |
857 | unsigned int max_dtr = (unsigned int)-1; | |
858 | ||
0a5b6438 SJ |
859 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
860 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
861 | max_dtr = card->ext_csd.hs200_max_dtr; |
862 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
863 | max_dtr = card->ext_csd.hs_max_dtr; | |
864 | else if (max_dtr > card->csd.max_dtr) | |
865 | max_dtr = card->csd.max_dtr; | |
866 | ||
867 | mmc_set_clock(card->host, max_dtr); | |
868 | } | |
869 | ||
870 | /* | |
871 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
872 | * If the bus width is changed successfully, return the selected width value. | |
873 | * Zero is returned instead of error value if the wide width is not supported. | |
874 | */ | |
875 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 876 | { |
a4924c71 | 877 | static unsigned ext_csd_bits[] = { |
a4924c71 | 878 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 879 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
880 | }; |
881 | static unsigned bus_widths[] = { | |
a4924c71 | 882 | MMC_BUS_WIDTH_8, |
577fb131 | 883 | MMC_BUS_WIDTH_4, |
a4924c71 | 884 | }; |
577fb131 SJ |
885 | struct mmc_host *host = card->host; |
886 | unsigned idx, bus_width = 0; | |
887 | int err = 0; | |
a4924c71 | 888 | |
1c2d26e3 | 889 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
890 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
891 | return 0; | |
a4924c71 | 892 | |
577fb131 | 893 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
894 | |
895 | /* | |
896 | * Unlike SD, MMC cards dont have a configuration register to notify | |
897 | * supported bus width. So bus test command should be run to identify | |
898 | * the supported bus width or compare the ext csd values of current | |
899 | * bus width and ext csd values of 1 bit mode read earlier. | |
900 | */ | |
577fb131 | 901 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
902 | /* |
903 | * Host is capable of 8bit transfer, then switch | |
904 | * the device to work in 8bit transfer mode. If the | |
905 | * mmc switch command returns error then switch to | |
906 | * 4bit transfer mode. On success set the corresponding | |
907 | * bus width on the host. | |
908 | */ | |
909 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
910 | EXT_CSD_BUS_WIDTH, | |
911 | ext_csd_bits[idx], | |
912 | card->ext_csd.generic_cmd6_time); | |
913 | if (err) | |
914 | continue; | |
915 | ||
577fb131 SJ |
916 | bus_width = bus_widths[idx]; |
917 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 918 | |
577fb131 SJ |
919 | /* |
920 | * If controller can't handle bus width test, | |
921 | * compare ext_csd previously read in 1 bit mode | |
922 | * against ext_csd at new bus width | |
923 | */ | |
a4924c71 | 924 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 925 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 926 | else |
577fb131 SJ |
927 | err = mmc_bus_test(card, bus_width); |
928 | ||
929 | if (!err) { | |
930 | err = bus_width; | |
a4924c71 | 931 | break; |
577fb131 SJ |
932 | } else { |
933 | pr_warn("%s: switch to bus width %d failed\n", | |
934 | mmc_hostname(host), ext_csd_bits[idx]); | |
935 | } | |
a4924c71 G |
936 | } |
937 | ||
577fb131 SJ |
938 | return err; |
939 | } | |
940 | ||
941 | /* | |
942 | * Switch to the high-speed mode | |
943 | */ | |
944 | static int mmc_select_hs(struct mmc_card *card) | |
945 | { | |
946 | int err; | |
947 | ||
948 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
949 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
950 | card->ext_csd.generic_cmd6_time, | |
951 | true, true, true); | |
a4924c71 | 952 | if (!err) |
577fb131 SJ |
953 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
954 | ||
955 | return err; | |
956 | } | |
957 | ||
958 | /* | |
959 | * Activate wide bus and DDR if supported. | |
960 | */ | |
961 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
962 | { | |
963 | struct mmc_host *host = card->host; | |
964 | u32 bus_width, ext_csd_bits; | |
965 | int err = 0; | |
966 | ||
967 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
968 | return 0; | |
969 | ||
970 | bus_width = host->ios.bus_width; | |
971 | if (bus_width == MMC_BUS_WIDTH_1) | |
972 | return 0; | |
973 | ||
974 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
975 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
976 | ||
977 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
978 | EXT_CSD_BUS_WIDTH, | |
979 | ext_csd_bits, | |
980 | card->ext_csd.generic_cmd6_time); | |
981 | if (err) { | |
4b75bffc | 982 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
983 | mmc_hostname(host), 1 << bus_width); |
984 | return err; | |
985 | } | |
986 | ||
987 | /* | |
988 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
989 | * signaling. | |
990 | * | |
991 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
992 | * | |
993 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
994 | * in the JEDEC spec for DDR. | |
995 | * | |
312449ef CD |
996 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
997 | * host controller can support this, like some of the SDHCI | |
998 | * controller which connect to an eMMC device. Some of these | |
999 | * host controller still needs to use 1.8v vccq for supporting | |
1000 | * DDR mode. | |
1001 | * | |
1002 | * So the sequence will be: | |
1003 | * if (host and device can both support 1.2v IO) | |
1004 | * use 1.2v IO; | |
1005 | * else if (host and device can both support 1.8v IO) | |
1006 | * use 1.8v IO; | |
1007 | * so if host and device can only support 3.3v IO, this is the | |
1008 | * last choice. | |
577fb131 SJ |
1009 | * |
1010 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1011 | */ | |
312449ef CD |
1012 | err = -EINVAL; |
1013 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1014 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1015 | |
312449ef CD |
1016 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1017 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1018 | ||
1019 | /* make sure vccq is 3.3v after switching disaster */ | |
1020 | if (err) | |
1021 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1022 | ||
1023 | if (!err) | |
1024 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1025 | |
1026 | return err; | |
1027 | } | |
1028 | ||
0a5b6438 SJ |
1029 | static int mmc_select_hs400(struct mmc_card *card) |
1030 | { | |
1031 | struct mmc_host *host = card->host; | |
1032 | int err = 0; | |
1033 | ||
1034 | /* | |
1035 | * HS400 mode requires 8-bit bus width | |
1036 | */ | |
1037 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1038 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1039 | return 0; | |
1040 | ||
1041 | /* | |
1042 | * Before switching to dual data rate operation for HS400, | |
1043 | * it is required to convert from HS200 mode to HS mode. | |
1044 | */ | |
1045 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1046 | mmc_set_bus_speed(card); | |
1047 | ||
1048 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1049 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1050 | card->ext_csd.generic_cmd6_time, | |
1051 | true, true, true); | |
1052 | if (err) { | |
4b75bffc | 1053 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1054 | mmc_hostname(host), err); |
1055 | return err; | |
1056 | } | |
1057 | ||
1058 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1059 | EXT_CSD_BUS_WIDTH, | |
1060 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1061 | card->ext_csd.generic_cmd6_time); | |
1062 | if (err) { | |
4b75bffc | 1063 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1064 | mmc_hostname(host), err); |
1065 | return err; | |
1066 | } | |
1067 | ||
1068 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1069 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, | |
1070 | card->ext_csd.generic_cmd6_time, | |
1071 | true, true, true); | |
1072 | if (err) { | |
4b75bffc | 1073 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1074 | mmc_hostname(host), err); |
1075 | return err; | |
1076 | } | |
1077 | ||
1078 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1079 | mmc_set_bus_speed(card); | |
1080 | ||
1081 | return 0; | |
1082 | } | |
1083 | ||
577fb131 SJ |
1084 | /* |
1085 | * For device supporting HS200 mode, the following sequence | |
1086 | * should be done before executing the tuning process. | |
1087 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1088 | * 2. switch to HS200 mode | |
1089 | * 3. set the clock to > 52Mhz and <=200MHz | |
1090 | */ | |
1091 | static int mmc_select_hs200(struct mmc_card *card) | |
1092 | { | |
1093 | struct mmc_host *host = card->host; | |
1094 | int err = -EINVAL; | |
1095 | ||
1096 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1097 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1098 | ||
1099 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1100 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1101 | ||
1102 | /* If fails try again during next card power cycle */ | |
1103 | if (err) | |
1104 | goto err; | |
1105 | ||
1106 | /* | |
1107 | * Set the bus width(4 or 8) with host's support and | |
1108 | * switch to HS200 mode if bus width is set successfully. | |
1109 | */ | |
1110 | err = mmc_select_bus_width(card); | |
1111 | if (!IS_ERR_VALUE(err)) { | |
4509f847 | 1112 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
577fb131 SJ |
1113 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, |
1114 | card->ext_csd.generic_cmd6_time, | |
1115 | true, true, true); | |
1116 | if (!err) | |
1117 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1118 | } | |
a4924c71 G |
1119 | err: |
1120 | return err; | |
1121 | } | |
1122 | ||
577fb131 SJ |
1123 | /* |
1124 | * Activate High Speed or HS200 mode if supported. | |
1125 | */ | |
1126 | static int mmc_select_timing(struct mmc_card *card) | |
1127 | { | |
1128 | int err = 0; | |
1129 | ||
148bcab2 | 1130 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1131 | goto bus_speed; |
1132 | ||
1133 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1134 | err = mmc_select_hs200(card); | |
1135 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1136 | err = mmc_select_hs(card); | |
1137 | ||
1138 | if (err && err != -EBADMSG) | |
1139 | return err; | |
1140 | ||
1141 | if (err) { | |
1142 | pr_warn("%s: switch to %s failed\n", | |
1143 | mmc_card_hs(card) ? "high-speed" : | |
1144 | (mmc_card_hs200(card) ? "hs200" : ""), | |
1145 | mmc_hostname(card->host)); | |
1146 | err = 0; | |
1147 | } | |
1148 | ||
1149 | bus_speed: | |
1150 | /* | |
1151 | * Set the bus speed to the selected bus timing. | |
1152 | * If timing is not selected, backward compatible is the default. | |
1153 | */ | |
1154 | mmc_set_bus_speed(card); | |
1155 | return err; | |
1156 | } | |
1157 | ||
1158 | /* | |
1159 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1160 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1161 | */ |
1162 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1163 | { | |
1164 | struct mmc_host *host = card->host; | |
1165 | int err = 0; | |
1166 | ||
0a5b6438 SJ |
1167 | /* |
1168 | * Timing should be adjusted to the HS400 target | |
1169 | * operation frequency for tuning process | |
1170 | */ | |
1171 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1172 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1173 | if (host->ops->prepare_hs400_tuning) | |
1174 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1175 | ||
577fb131 SJ |
1176 | if (host->ops->execute_tuning) { |
1177 | mmc_host_clk_hold(host); | |
1178 | err = host->ops->execute_tuning(host, | |
1179 | MMC_SEND_TUNING_BLOCK_HS200); | |
1180 | mmc_host_clk_release(host); | |
1181 | ||
1182 | if (err) | |
4b75bffc | 1183 | pr_err("%s: tuning execution failed\n", |
577fb131 SJ |
1184 | mmc_hostname(host)); |
1185 | } | |
1186 | ||
1187 | return err; | |
1188 | } | |
1189 | ||
7ea239d9 | 1190 | /* |
6abaa0c9 PO |
1191 | * Handle the detection and initialisation of a card. |
1192 | * | |
8769392b | 1193 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1194 | * we're trying to reinitialise. |
7ea239d9 | 1195 | */ |
8c75deae | 1196 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1197 | struct mmc_card *oldcard) |
7ea239d9 PO |
1198 | { |
1199 | struct mmc_card *card; | |
577fb131 | 1200 | int err; |
7ea239d9 | 1201 | u32 cid[4]; |
b676f039 | 1202 | u32 rocr; |
7ea239d9 PO |
1203 | |
1204 | BUG_ON(!host); | |
d84075c8 | 1205 | WARN_ON(!host->claimed); |
7ea239d9 | 1206 | |
44669034 SNX |
1207 | /* Set correct bus mode for MMC before attempting init */ |
1208 | if (!mmc_host_is_spi(host)) | |
1209 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1210 | ||
7ea239d9 PO |
1211 | /* |
1212 | * Since we're changing the OCR value, we seem to | |
1213 | * need to tell some cards to go back to the idle | |
1214 | * state. We wait 1ms to give cards time to | |
1215 | * respond. | |
c3805467 | 1216 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1217 | */ |
1218 | mmc_go_idle(host); | |
1219 | ||
1220 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1221 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1222 | if (err) |
6abaa0c9 | 1223 | goto err; |
7ea239d9 | 1224 | |
af517150 DB |
1225 | /* |
1226 | * For SPI, enable CRC as appropriate. | |
1227 | */ | |
1228 | if (mmc_host_is_spi(host)) { | |
1229 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1230 | if (err) | |
1231 | goto err; | |
1232 | } | |
1233 | ||
7ea239d9 PO |
1234 | /* |
1235 | * Fetch CID from card. | |
1236 | */ | |
af517150 DB |
1237 | if (mmc_host_is_spi(host)) |
1238 | err = mmc_send_cid(host, cid); | |
1239 | else | |
1240 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1241 | if (err) |
7ea239d9 PO |
1242 | goto err; |
1243 | ||
6abaa0c9 | 1244 | if (oldcard) { |
adf66a0d PO |
1245 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1246 | err = -ENOENT; | |
6abaa0c9 | 1247 | goto err; |
adf66a0d | 1248 | } |
6abaa0c9 PO |
1249 | |
1250 | card = oldcard; | |
1251 | } else { | |
1252 | /* | |
1253 | * Allocate card structure. | |
1254 | */ | |
51ec92e2 | 1255 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1256 | if (IS_ERR(card)) { |
1257 | err = PTR_ERR(card); | |
6abaa0c9 | 1258 | goto err; |
adf66a0d | 1259 | } |
7ea239d9 | 1260 | |
69041150 | 1261 | card->ocr = ocr; |
6abaa0c9 PO |
1262 | card->type = MMC_TYPE_MMC; |
1263 | card->rca = 1; | |
1264 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1265 | } | |
7ea239d9 | 1266 | |
eac86321 DA |
1267 | /* |
1268 | * Call the optional HC's init_card function to handle quirks. | |
1269 | */ | |
1270 | if (host->ops->init_card) | |
1271 | host->ops->init_card(host, card); | |
1272 | ||
7ea239d9 | 1273 | /* |
af517150 | 1274 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1275 | */ |
af517150 DB |
1276 | if (!mmc_host_is_spi(host)) { |
1277 | err = mmc_set_relative_addr(card); | |
1278 | if (err) | |
1279 | goto free_card; | |
7ea239d9 | 1280 | |
af517150 DB |
1281 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1282 | } | |
7ea239d9 | 1283 | |
6abaa0c9 PO |
1284 | if (!oldcard) { |
1285 | /* | |
1286 | * Fetch CSD from card. | |
1287 | */ | |
1288 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1289 | if (err) |
6abaa0c9 | 1290 | goto free_card; |
7ea239d9 | 1291 | |
bd766312 | 1292 | err = mmc_decode_csd(card); |
adf66a0d | 1293 | if (err) |
bd766312 PO |
1294 | goto free_card; |
1295 | err = mmc_decode_cid(card); | |
adf66a0d | 1296 | if (err) |
bd766312 | 1297 | goto free_card; |
6abaa0c9 | 1298 | } |
7ea239d9 | 1299 | |
3d705d14 SH |
1300 | /* |
1301 | * handling only for cards supporting DSR and hosts requesting | |
1302 | * DSR configuration | |
1303 | */ | |
1304 | if (card->csd.dsr_imp && host->dsr_req) | |
1305 | mmc_set_dsr(host); | |
1306 | ||
7ea239d9 | 1307 | /* |
89a73cf5 | 1308 | * Select card, as all following commands rely on that. |
7ea239d9 | 1309 | */ |
af517150 DB |
1310 | if (!mmc_host_is_spi(host)) { |
1311 | err = mmc_select_card(card); | |
1312 | if (err) | |
1313 | goto free_card; | |
1314 | } | |
7ea239d9 | 1315 | |
6abaa0c9 | 1316 | if (!oldcard) { |
076ec38a UH |
1317 | /* Read extended CSD. */ |
1318 | err = mmc_read_ext_csd(card); | |
17b0429d | 1319 | if (err) |
6abaa0c9 | 1320 | goto free_card; |
b676f039 PR |
1321 | |
1322 | /* If doing byte addressing, check if required to do sector | |
1323 | * addressing. Handle the case of <2GB cards needing sector | |
1324 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1325 | * ocr register has bit 30 set for sector addressing. | |
1326 | */ | |
1327 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1328 | mmc_card_set_blockaddr(card); | |
1329 | ||
dfe86cba AH |
1330 | /* Erase size depends on CSD and Extended CSD */ |
1331 | mmc_set_erase_size(card); | |
6abaa0c9 | 1332 | } |
7ea239d9 | 1333 | |
709de99d CD |
1334 | /* |
1335 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1336 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1337 | */ |
69803d4f | 1338 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1339 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1340 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1341 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1342 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1343 | |
1344 | if (err && err != -EBADMSG) | |
1345 | goto free_card; | |
1346 | ||
1347 | if (err) { | |
1348 | err = 0; | |
1349 | /* | |
1350 | * Just disable enhanced area off & sz | |
1351 | * will try to enable ERASE_GROUP_DEF | |
1352 | * during next time reinit | |
1353 | */ | |
1354 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1355 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1356 | } else { | |
1357 | card->ext_csd.erase_group_def = 1; | |
1358 | /* | |
1359 | * enable ERASE_GRP_DEF successfully. | |
1360 | * This will affect the erase size, so | |
1361 | * here need to reset erase size | |
1362 | */ | |
1363 | mmc_set_erase_size(card); | |
1364 | } | |
1365 | } | |
1366 | ||
41e2a489 PR |
1367 | /* |
1368 | * Ensure eMMC user default partition is enabled | |
1369 | */ | |
371a689f AW |
1370 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1371 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1372 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1373 | card->ext_csd.part_config, | |
1374 | card->ext_csd.part_time); | |
1375 | if (err && err != -EBADMSG) | |
1376 | goto free_card; | |
41e2a489 PR |
1377 | } |
1378 | ||
bec8726a | 1379 | /* |
43235679 | 1380 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1381 | */ |
43235679 | 1382 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1383 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1384 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1385 | EXT_CSD_POWER_ON, | |
1386 | card->ext_csd.generic_cmd6_time); | |
1387 | if (err && err != -EBADMSG) | |
1388 | goto free_card; | |
bec8726a | 1389 | |
96a85d54 G |
1390 | /* |
1391 | * The err can be -EBADMSG or 0, | |
1392 | * so check for success and update the flag | |
1393 | */ | |
1394 | if (!err) | |
e6c08586 | 1395 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1396 | } |
bec8726a | 1397 | |
89a73cf5 | 1398 | /* |
577fb131 | 1399 | * Select timing interface |
dfc13e84 | 1400 | */ |
577fb131 SJ |
1401 | err = mmc_select_timing(card); |
1402 | if (err) | |
1403 | goto free_card; | |
dfc13e84 | 1404 | |
a4924c71 | 1405 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1406 | err = mmc_hs200_tuning(card); |
1407 | if (err) | |
4b75bffc | 1408 | goto free_card; |
0a5b6438 SJ |
1409 | |
1410 | err = mmc_select_hs400(card); | |
1411 | if (err) | |
4b75bffc | 1412 | goto free_card; |
577fb131 SJ |
1413 | } else if (mmc_card_hs(card)) { |
1414 | /* Select the desired bus width optionally */ | |
1415 | err = mmc_select_bus_width(card); | |
1416 | if (!IS_ERR_VALUE(err)) { | |
1417 | err = mmc_select_hs_ddr(card); | |
1418 | if (err) | |
4b75bffc | 1419 | goto free_card; |
ef0b27d4 | 1420 | } |
89a73cf5 PO |
1421 | } |
1422 | ||
2385049d SJ |
1423 | /* |
1424 | * Choose the power class with selected bus interface | |
1425 | */ | |
1426 | mmc_select_powerclass(card); | |
1427 | ||
52d0974e SJ |
1428 | /* |
1429 | * Enable HPI feature (if supported) | |
1430 | */ | |
1431 | if (card->ext_csd.hpi) { | |
1432 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1433 | EXT_CSD_HPI_MGMT, 1, | |
1434 | card->ext_csd.generic_cmd6_time); | |
1435 | if (err && err != -EBADMSG) | |
1436 | goto free_card; | |
1437 | if (err) { | |
6606110d JP |
1438 | pr_warn("%s: Enabling HPI failed\n", |
1439 | mmc_hostname(card->host)); | |
52d0974e SJ |
1440 | err = 0; |
1441 | } else | |
1442 | card->ext_csd.hpi_en = 1; | |
1443 | } | |
1444 | ||
881d1c25 SJ |
1445 | /* |
1446 | * If cache size is higher than 0, this indicates | |
1447 | * the existence of cache and it can be turned on. | |
1448 | */ | |
7536d3f8 | 1449 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1450 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1451 | EXT_CSD_CACHE_CTRL, 1, |
1452 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1453 | if (err && err != -EBADMSG) |
1454 | goto free_card; | |
1455 | ||
1456 | /* | |
1457 | * Only if no error, cache is turned on successfully. | |
1458 | */ | |
8bc0678b | 1459 | if (err) { |
6606110d JP |
1460 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1461 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1462 | card->ext_csd.cache_ctrl = 0; |
1463 | err = 0; | |
1464 | } else { | |
1465 | card->ext_csd.cache_ctrl = 1; | |
1466 | } | |
881d1c25 SJ |
1467 | } |
1468 | ||
abd9ac14 SJ |
1469 | /* |
1470 | * The mandatory minimum values are defined for packed command. | |
1471 | * read: 5, write: 3 | |
1472 | */ | |
1473 | if (card->ext_csd.max_packed_writes >= 3 && | |
1474 | card->ext_csd.max_packed_reads >= 5 && | |
1475 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1476 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1477 | EXT_CSD_EXP_EVENTS_CTRL, | |
1478 | EXT_CSD_PACKED_EVENT_EN, | |
1479 | card->ext_csd.generic_cmd6_time); | |
1480 | if (err && err != -EBADMSG) | |
1481 | goto free_card; | |
1482 | if (err) { | |
1483 | pr_warn("%s: Enabling packed event failed\n", | |
1484 | mmc_hostname(card->host)); | |
1485 | card->ext_csd.packed_event_en = 0; | |
1486 | err = 0; | |
1487 | } else { | |
1488 | card->ext_csd.packed_event_en = 1; | |
1489 | } | |
1490 | } | |
1491 | ||
6abaa0c9 PO |
1492 | if (!oldcard) |
1493 | host->card = card; | |
1494 | ||
17b0429d | 1495 | return 0; |
6abaa0c9 PO |
1496 | |
1497 | free_card: | |
1498 | if (!oldcard) | |
1499 | mmc_remove_card(card); | |
1500 | err: | |
adf66a0d | 1501 | return err; |
6abaa0c9 PO |
1502 | } |
1503 | ||
07a68216 UH |
1504 | static int mmc_can_sleep(struct mmc_card *card) |
1505 | { | |
1506 | return (card && card->ext_csd.rev >= 3); | |
1507 | } | |
1508 | ||
1509 | static int mmc_sleep(struct mmc_host *host) | |
1510 | { | |
1511 | struct mmc_command cmd = {0}; | |
1512 | struct mmc_card *card = host->card; | |
cb962e04 | 1513 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1514 | int err; |
1515 | ||
07a68216 UH |
1516 | err = mmc_deselect_cards(host); |
1517 | if (err) | |
1518 | return err; | |
1519 | ||
1520 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1521 | cmd.arg = card->rca << 16; | |
1522 | cmd.arg |= 1 << 15; | |
1523 | ||
cb962e04 UH |
1524 | /* |
1525 | * If the max_busy_timeout of the host is specified, validate it against | |
1526 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1527 | * from doing hw busy detection, which is done by converting to a R1 | |
1528 | * response instead of a R1B. | |
1529 | */ | |
1530 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1531 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1532 | } else { | |
1533 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1534 | cmd.busy_timeout = timeout_ms; | |
1535 | } | |
1536 | ||
07a68216 UH |
1537 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1538 | if (err) | |
1539 | return err; | |
1540 | ||
1541 | /* | |
1542 | * If the host does not wait while the card signals busy, then we will | |
1543 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1544 | * SEND_STATUS command to poll the status because that command (and most | |
1545 | * others) is invalid while the card sleeps. | |
1546 | */ | |
cb962e04 UH |
1547 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1548 | mmc_delay(timeout_ms); | |
07a68216 UH |
1549 | |
1550 | return err; | |
1551 | } | |
1552 | ||
e6c08586 UH |
1553 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1554 | { | |
1555 | return card && | |
1556 | mmc_card_mmc(card) && | |
1557 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1558 | } | |
1559 | ||
1560 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1561 | { | |
1562 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1563 | int err; | |
1564 | ||
1565 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1566 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1567 | timeout = card->ext_csd.power_off_longtime; | |
1568 | ||
878e200b UH |
1569 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1570 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1571 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1572 | if (err) |
1573 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1574 | mmc_hostname(card->host), timeout); | |
1575 | ||
1576 | /* Disable the power off notification after the switch operation. */ | |
1577 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1578 | ||
1579 | return err; | |
1580 | } | |
1581 | ||
6abaa0c9 PO |
1582 | /* |
1583 | * Host is being removed. Free up the current card. | |
1584 | */ | |
1585 | static void mmc_remove(struct mmc_host *host) | |
1586 | { | |
1587 | BUG_ON(!host); | |
1588 | BUG_ON(!host->card); | |
1589 | ||
1590 | mmc_remove_card(host->card); | |
1591 | host->card = NULL; | |
1592 | } | |
1593 | ||
d3049504 AH |
1594 | /* |
1595 | * Card detection - card is alive. | |
1596 | */ | |
1597 | static int mmc_alive(struct mmc_host *host) | |
1598 | { | |
1599 | return mmc_send_status(host->card, NULL); | |
1600 | } | |
1601 | ||
6abaa0c9 PO |
1602 | /* |
1603 | * Card detection callback from host. | |
1604 | */ | |
1605 | static void mmc_detect(struct mmc_host *host) | |
1606 | { | |
1607 | int err; | |
1608 | ||
1609 | BUG_ON(!host); | |
1610 | BUG_ON(!host->card); | |
1611 | ||
e94cfef6 | 1612 | mmc_get_card(host->card); |
6abaa0c9 PO |
1613 | |
1614 | /* | |
1615 | * Just check if our card has been removed. | |
1616 | */ | |
d3049504 | 1617 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1618 | |
e94cfef6 | 1619 | mmc_put_card(host->card); |
6abaa0c9 | 1620 | |
17b0429d | 1621 | if (err) { |
4101c16a | 1622 | mmc_remove(host); |
6abaa0c9 PO |
1623 | |
1624 | mmc_claim_host(host); | |
1625 | mmc_detach_bus(host); | |
7f7e4129 | 1626 | mmc_power_off(host); |
6abaa0c9 PO |
1627 | mmc_release_host(host); |
1628 | } | |
1629 | } | |
1630 | ||
03d071fc | 1631 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1632 | { |
c3805467 | 1633 | int err = 0; |
03d071fc UH |
1634 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1635 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1636 | |
6abaa0c9 PO |
1637 | BUG_ON(!host); |
1638 | BUG_ON(!host->card); | |
7ea239d9 | 1639 | |
6abaa0c9 | 1640 | mmc_claim_host(host); |
881d926d | 1641 | |
9ec775f7 UH |
1642 | if (mmc_card_suspended(host->card)) |
1643 | goto out; | |
1644 | ||
39b9431b UH |
1645 | if (mmc_card_doing_bkops(host->card)) { |
1646 | err = mmc_stop_bkops(host->card); | |
1647 | if (err) | |
1648 | goto out; | |
1649 | } | |
1650 | ||
10e5d965 | 1651 | err = mmc_flush_cache(host->card); |
881d926d ME |
1652 | if (err) |
1653 | goto out; | |
1654 | ||
43235679 | 1655 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1656 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1657 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1658 | else if (mmc_can_sleep(host->card)) |
1659 | err = mmc_sleep(host); | |
e6c08586 | 1660 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1661 | err = mmc_deselect_cards(host); |
95cdfb72 | 1662 | |
9ec775f7 | 1663 | if (!err) { |
74590263 | 1664 | mmc_power_off(host); |
9ec775f7 UH |
1665 | mmc_card_set_suspended(host->card); |
1666 | } | |
881d926d ME |
1667 | out: |
1668 | mmc_release_host(host); | |
c3805467 | 1669 | return err; |
6abaa0c9 | 1670 | } |
7ea239d9 | 1671 | |
03d071fc | 1672 | /* |
0cb403a2 | 1673 | * Suspend callback |
03d071fc UH |
1674 | */ |
1675 | static int mmc_suspend(struct mmc_host *host) | |
1676 | { | |
0cb403a2 UH |
1677 | int err; |
1678 | ||
1679 | err = _mmc_suspend(host, true); | |
1680 | if (!err) { | |
1681 | pm_runtime_disable(&host->card->dev); | |
1682 | pm_runtime_set_suspended(&host->card->dev); | |
1683 | } | |
1684 | ||
1685 | return err; | |
03d071fc UH |
1686 | } |
1687 | ||
6abaa0c9 | 1688 | /* |
6abaa0c9 PO |
1689 | * This function tries to determine if the same card is still present |
1690 | * and, if so, restore all state to it. | |
1691 | */ | |
0cb403a2 | 1692 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1693 | { |
9ec775f7 | 1694 | int err = 0; |
6abaa0c9 PO |
1695 | |
1696 | BUG_ON(!host); | |
1697 | BUG_ON(!host->card); | |
1698 | ||
1699 | mmc_claim_host(host); | |
9ec775f7 UH |
1700 | |
1701 | if (!mmc_card_suspended(host->card)) | |
1702 | goto out; | |
1703 | ||
69041150 | 1704 | mmc_power_up(host, host->card->ocr); |
69041150 | 1705 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1706 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1707 | |
9ec775f7 UH |
1708 | out: |
1709 | mmc_release_host(host); | |
95cdfb72 | 1710 | return err; |
6abaa0c9 PO |
1711 | } |
1712 | ||
9ec775f7 UH |
1713 | /* |
1714 | * Shutdown callback | |
1715 | */ | |
1716 | static int mmc_shutdown(struct mmc_host *host) | |
1717 | { | |
1718 | int err = 0; | |
1719 | ||
1720 | /* | |
1721 | * In a specific case for poweroff notify, we need to resume the card | |
1722 | * before we can shutdown it properly. | |
1723 | */ | |
1724 | if (mmc_can_poweroff_notify(host->card) && | |
1725 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1726 | err = _mmc_resume(host); |
9ec775f7 UH |
1727 | |
1728 | if (!err) | |
1729 | err = _mmc_suspend(host, false); | |
1730 | ||
1731 | return err; | |
1732 | } | |
c4d770d7 | 1733 | |
0cb403a2 UH |
1734 | /* |
1735 | * Callback for resume. | |
1736 | */ | |
1737 | static int mmc_resume(struct mmc_host *host) | |
1738 | { | |
4d223782 | 1739 | int err = 0; |
0cb403a2 | 1740 | |
4d223782 UH |
1741 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1742 | err = _mmc_resume(host); | |
1743 | pm_runtime_set_active(&host->card->dev); | |
1744 | pm_runtime_mark_last_busy(&host->card->dev); | |
1745 | } | |
0cb403a2 UH |
1746 | pm_runtime_enable(&host->card->dev); |
1747 | ||
1748 | return err; | |
1749 | } | |
1750 | ||
c4d770d7 UH |
1751 | /* |
1752 | * Callback for runtime_suspend. | |
1753 | */ | |
1754 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1755 | { | |
1756 | int err; | |
1757 | ||
1758 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1759 | return 0; | |
1760 | ||
0cb403a2 | 1761 | err = _mmc_suspend(host, true); |
0cc81a8c | 1762 | if (err) |
c4d770d7 UH |
1763 | pr_err("%s: error %d doing aggessive suspend\n", |
1764 | mmc_hostname(host), err); | |
c4d770d7 | 1765 | |
c4d770d7 UH |
1766 | return err; |
1767 | } | |
1768 | ||
1769 | /* | |
1770 | * Callback for runtime_resume. | |
1771 | */ | |
1772 | static int mmc_runtime_resume(struct mmc_host *host) | |
1773 | { | |
1774 | int err; | |
1775 | ||
4d223782 | 1776 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1777 | return 0; |
1778 | ||
0cb403a2 | 1779 | err = _mmc_resume(host); |
c4d770d7 UH |
1780 | if (err) |
1781 | pr_err("%s: error %d doing aggessive resume\n", | |
1782 | mmc_hostname(host), err); | |
1783 | ||
c4d770d7 UH |
1784 | return 0; |
1785 | } | |
1786 | ||
12ae637f | 1787 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1788 | { |
12ae637f OBC |
1789 | int ret; |
1790 | ||
eae1aeee | 1791 | mmc_claim_host(host); |
69041150 | 1792 | ret = mmc_init_card(host, host->card->ocr, host->card); |
eae1aeee | 1793 | mmc_release_host(host); |
12ae637f OBC |
1794 | |
1795 | return ret; | |
eae1aeee AH |
1796 | } |
1797 | ||
f855a371 JR |
1798 | int mmc_can_reset(struct mmc_card *card) |
1799 | { | |
1800 | u8 rst_n_function; | |
1801 | ||
1802 | rst_n_function = card->ext_csd.rst_n_function; | |
1803 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
1804 | return 0; | |
1805 | return 1; | |
1806 | } | |
1807 | EXPORT_SYMBOL(mmc_can_reset); | |
1808 | ||
1809 | static int mmc_reset(struct mmc_host *host) | |
1810 | { | |
1811 | struct mmc_card *card = host->card; | |
1812 | u32 status; | |
1813 | ||
1814 | if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) | |
1815 | return -EOPNOTSUPP; | |
1816 | ||
1817 | if (!mmc_can_reset(card)) | |
1818 | return -EOPNOTSUPP; | |
1819 | ||
1820 | mmc_host_clk_hold(host); | |
1821 | mmc_set_clock(host, host->f_init); | |
1822 | ||
1823 | host->ops->hw_reset(host); | |
1824 | ||
1825 | /* If the reset has happened, then a status command will fail */ | |
1826 | if (!mmc_send_status(card, &status)) { | |
1827 | mmc_host_clk_release(host); | |
1828 | return -ENOSYS; | |
1829 | } | |
1830 | ||
1831 | /* Set initial state and call mmc_set_ios */ | |
1832 | mmc_set_initial_state(host); | |
1833 | mmc_host_clk_release(host); | |
1834 | ||
1835 | return mmc_power_restore(host); | |
1836 | } | |
1837 | ||
6abaa0c9 PO |
1838 | static const struct mmc_bus_ops mmc_ops = { |
1839 | .remove = mmc_remove, | |
1840 | .detect = mmc_detect, | |
1841 | .suspend = mmc_suspend, | |
1842 | .resume = mmc_resume, | |
c4d770d7 UH |
1843 | .runtime_suspend = mmc_runtime_suspend, |
1844 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1845 | .power_restore = mmc_power_restore, |
d3049504 | 1846 | .alive = mmc_alive, |
486fdbbc | 1847 | .shutdown = mmc_shutdown, |
f855a371 | 1848 | .reset = mmc_reset, |
6abaa0c9 PO |
1849 | }; |
1850 | ||
1851 | /* | |
1852 | * Starting point for MMC card init. | |
1853 | */ | |
807e8e40 | 1854 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1855 | { |
1856 | int err; | |
69041150 | 1857 | u32 ocr, rocr; |
6abaa0c9 PO |
1858 | |
1859 | BUG_ON(!host); | |
d84075c8 | 1860 | WARN_ON(!host->claimed); |
6abaa0c9 | 1861 | |
44669034 SNX |
1862 | /* Set correct bus mode for MMC before attempting attach */ |
1863 | if (!mmc_host_is_spi(host)) | |
1864 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1865 | ||
807e8e40 AR |
1866 | err = mmc_send_op_cond(host, 0, &ocr); |
1867 | if (err) | |
1868 | return err; | |
1869 | ||
2501c917 | 1870 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
1871 | if (host->ocr_avail_mmc) |
1872 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1873 | |
af517150 DB |
1874 | /* |
1875 | * We need to get OCR a different way for SPI. | |
1876 | */ | |
1877 | if (mmc_host_is_spi(host)) { | |
1878 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1879 | if (err) | |
1880 | goto err; | |
1881 | } | |
1882 | ||
69041150 | 1883 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
1884 | |
1885 | /* | |
1886 | * Can we support the voltage of the card? | |
1887 | */ | |
69041150 | 1888 | if (!rocr) { |
109b5bed | 1889 | err = -EINVAL; |
6abaa0c9 | 1890 | goto err; |
109b5bed | 1891 | } |
6abaa0c9 PO |
1892 | |
1893 | /* | |
1894 | * Detect and init the card. | |
1895 | */ | |
69041150 | 1896 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 1897 | if (err) |
6abaa0c9 PO |
1898 | goto err; |
1899 | ||
1900 | mmc_release_host(host); | |
4101c16a | 1901 | err = mmc_add_card(host->card); |
807e8e40 | 1902 | mmc_claim_host(host); |
7ea239d9 | 1903 | if (err) |
2986d0bf | 1904 | goto remove_card; |
7ea239d9 PO |
1905 | |
1906 | return 0; | |
1907 | ||
2986d0bf | 1908 | remove_card: |
807e8e40 | 1909 | mmc_release_host(host); |
6abaa0c9 | 1910 | mmc_remove_card(host->card); |
2986d0bf | 1911 | mmc_claim_host(host); |
807e8e40 | 1912 | host->card = NULL; |
7ea239d9 PO |
1913 | err: |
1914 | mmc_detach_bus(host); | |
7ea239d9 | 1915 | |
a3c76eb9 | 1916 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1917 | mmc_hostname(host), err); |
1918 | ||
adf66a0d | 1919 | return err; |
7ea239d9 | 1920 | } |