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> | |
81f8a7be | 14 | #include <linux/of.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
0205a904 | 16 | #include <linux/stat.h> |
0cb403a2 | 17 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
18 | |
19 | #include <linux/mmc/host.h> | |
20 | #include <linux/mmc/card.h> | |
21 | #include <linux/mmc/mmc.h> | |
22 | ||
23 | #include "core.h" | |
4101c16a | 24 | #include "bus.h" |
7ea239d9 | 25 | #include "mmc_ops.h" |
4c4cb171 | 26 | #include "sd_ops.h" |
7ea239d9 PO |
27 | |
28 | static const unsigned int tran_exp[] = { | |
29 | 10000, 100000, 1000000, 10000000, | |
30 | 0, 0, 0, 0 | |
31 | }; | |
32 | ||
33 | static const unsigned char tran_mant[] = { | |
34 | 0, 10, 12, 13, 15, 20, 25, 30, | |
35 | 35, 40, 45, 50, 55, 60, 70, 80, | |
36 | }; | |
37 | ||
38 | static const unsigned int tacc_exp[] = { | |
39 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
40 | }; | |
41 | ||
42 | static const unsigned int tacc_mant[] = { | |
43 | 0, 10, 12, 13, 15, 20, 25, 30, | |
44 | 35, 40, 45, 50, 55, 60, 70, 80, | |
45 | }; | |
46 | ||
47 | #define UNSTUFF_BITS(resp,start,size) \ | |
48 | ({ \ | |
49 | const int __size = size; \ | |
50 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
51 | const int __off = 3 - ((start) / 32); \ | |
52 | const int __shft = (start) & 31; \ | |
53 | u32 __res; \ | |
54 | \ | |
55 | __res = resp[__off] >> __shft; \ | |
56 | if (__size + __shft > 32) \ | |
57 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
58 | __res & __mask; \ | |
59 | }) | |
60 | ||
61 | /* | |
62 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
63 | */ | |
bd766312 | 64 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
65 | { |
66 | u32 *resp = card->raw_cid; | |
67 | ||
68 | /* | |
69 | * The selection of the format here is based upon published | |
70 | * specs from sandisk and from what people have reported. | |
71 | */ | |
72 | switch (card->csd.mmca_vsn) { | |
73 | case 0: /* MMC v1.0 - v1.2 */ | |
74 | case 1: /* MMC v1.4 */ | |
75 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
76 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
77 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
78 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
79 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
80 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
81 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
82 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
83 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
84 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
85 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
86 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
87 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
88 | break; | |
89 | ||
90 | case 2: /* MMC v2.0 - v2.2 */ | |
91 | case 3: /* MMC v3.1 - v3.3 */ | |
92 | case 4: /* MMC v4 */ | |
93 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
94 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
95 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
96 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
97 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
98 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
99 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
100 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 101 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
102 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
103 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
104 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
105 | break; | |
106 | ||
107 | default: | |
a3c76eb9 | 108 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 109 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 110 | return -EINVAL; |
7ea239d9 | 111 | } |
bd766312 PO |
112 | |
113 | return 0; | |
7ea239d9 PO |
114 | } |
115 | ||
dfe86cba AH |
116 | static void mmc_set_erase_size(struct mmc_card *card) |
117 | { | |
118 | if (card->ext_csd.erase_group_def & 1) | |
119 | card->erase_size = card->ext_csd.hc_erase_size; | |
120 | else | |
121 | card->erase_size = card->csd.erase_size; | |
122 | ||
123 | mmc_init_erase(card); | |
124 | } | |
125 | ||
7ea239d9 PO |
126 | /* |
127 | * Given a 128-bit response, decode to our card CSD structure. | |
128 | */ | |
bd766312 | 129 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
130 | { |
131 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 132 | unsigned int e, m, a, b; |
7ea239d9 PO |
133 | u32 *resp = card->raw_csd; |
134 | ||
135 | /* | |
136 | * We only understand CSD structure v1.1 and v1.2. | |
137 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 138 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 139 | */ |
6da24b78 KP |
140 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
141 | if (csd->structure == 0) { | |
a3c76eb9 | 142 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 143 | mmc_hostname(card->host), csd->structure); |
bd766312 | 144 | return -EINVAL; |
7ea239d9 PO |
145 | } |
146 | ||
147 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
148 | m = UNSTUFF_BITS(resp, 115, 4); | |
149 | e = UNSTUFF_BITS(resp, 112, 3); | |
150 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
151 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
152 | ||
153 | m = UNSTUFF_BITS(resp, 99, 4); | |
154 | e = UNSTUFF_BITS(resp, 96, 3); | |
155 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
156 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
157 | ||
158 | e = UNSTUFF_BITS(resp, 47, 3); | |
159 | m = UNSTUFF_BITS(resp, 62, 12); | |
160 | csd->capacity = (1 + m) << (e + 2); | |
161 | ||
162 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
163 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
164 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
165 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 166 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
167 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
168 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
169 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 170 | |
dfe86cba AH |
171 | if (csd->write_blkbits >= 9) { |
172 | a = UNSTUFF_BITS(resp, 42, 5); | |
173 | b = UNSTUFF_BITS(resp, 37, 5); | |
174 | csd->erase_size = (a + 1) * (b + 1); | |
175 | csd->erase_size <<= csd->write_blkbits - 9; | |
176 | } | |
177 | ||
bd766312 | 178 | return 0; |
7ea239d9 PO |
179 | } |
180 | ||
96cf5f02 SJ |
181 | static void mmc_select_card_type(struct mmc_card *card) |
182 | { | |
183 | struct mmc_host *host = card->host; | |
0a5b6438 | 184 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 185 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 186 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 187 | unsigned int avail_type = 0; |
96cf5f02 | 188 | |
2415c0ef SJ |
189 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
190 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 191 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
192 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
193 | } | |
96cf5f02 SJ |
194 | |
195 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 196 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 197 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
198 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
199 | } | |
96cf5f02 | 200 | |
2415c0ef SJ |
201 | if (caps & MMC_CAP_1_8V_DDR && |
202 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 203 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
204 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
205 | } | |
206 | ||
207 | if (caps & MMC_CAP_1_2V_DDR && | |
208 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
209 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
210 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
211 | } | |
96cf5f02 | 212 | |
2415c0ef SJ |
213 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
214 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 215 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
216 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
217 | } | |
218 | ||
219 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
220 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 221 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
222 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
223 | } | |
96cf5f02 | 224 | |
0a5b6438 SJ |
225 | if (caps2 & MMC_CAP2_HS400_1_8V && |
226 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
227 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
228 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
229 | } | |
230 | ||
231 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
232 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
233 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
234 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
235 | } | |
236 | ||
96cf5f02 | 237 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 238 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 239 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
240 | } |
241 | ||
b4493eea GS |
242 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
243 | { | |
994324bb GS |
244 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
245 | ||
246 | /* | |
247 | * Disable these attributes by default | |
248 | */ | |
249 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
250 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
251 | |
252 | /* | |
253 | * Enhanced area feature support -- check whether the eMMC | |
254 | * card has the Enhanced area enabled. If so, export enhanced | |
255 | * area offset and size to user by adding sysfs interface. | |
256 | */ | |
257 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
258 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
259 | if (card->ext_csd.partition_setting_completed) { |
260 | hc_erase_grp_sz = | |
261 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
262 | hc_wp_grp_sz = | |
263 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 264 | |
994324bb GS |
265 | /* |
266 | * calculate the enhanced data area offset, in bytes | |
267 | */ | |
268 | card->ext_csd.enhanced_area_offset = | |
269 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
270 | (ext_csd[137] << 8) + ext_csd[136]; | |
271 | if (mmc_card_blockaddr(card)) | |
272 | card->ext_csd.enhanced_area_offset <<= 9; | |
273 | /* | |
274 | * calculate the enhanced data area size, in kilobytes | |
275 | */ | |
276 | card->ext_csd.enhanced_area_size = | |
277 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
278 | ext_csd[140]; | |
279 | card->ext_csd.enhanced_area_size *= | |
280 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
281 | card->ext_csd.enhanced_area_size <<= 9; | |
282 | } else { | |
283 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
284 | mmc_hostname(card->host)); | |
285 | } | |
b4493eea GS |
286 | } |
287 | } | |
288 | ||
289 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
290 | { | |
b4493eea | 291 | int idx; |
994324bb GS |
292 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
293 | unsigned int part_size; | |
b4493eea GS |
294 | |
295 | /* | |
296 | * General purpose partition feature support -- | |
297 | * If ext_csd has the size of general purpose partitions, | |
298 | * set size, part_cfg, partition name in mmc_part. | |
299 | */ | |
300 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
301 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
302 | hc_erase_grp_sz = |
303 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
304 | hc_wp_grp_sz = | |
305 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
306 | |
307 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
308 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
309 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
310 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
311 | continue; | |
994324bb GS |
312 | if (card->ext_csd.partition_setting_completed == 0) { |
313 | pr_warn("%s: has partition size defined without partition complete\n", | |
314 | mmc_hostname(card->host)); | |
315 | break; | |
316 | } | |
b4493eea GS |
317 | part_size = |
318 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
319 | << 16) + | |
320 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
321 | << 8) + | |
322 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
323 | part_size *= (size_t)(hc_erase_grp_sz * | |
324 | hc_wp_grp_sz); | |
325 | mmc_part_add(card, part_size << 19, | |
326 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
327 | "gp%d", idx, false, | |
328 | MMC_BLK_DATA_AREA_GP); | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
08ee80cc PR |
333 | /* |
334 | * Decode extended CSD. | |
335 | */ | |
076ec38a | 336 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 337 | { |
e0c368d5 NJ |
338 | int err = 0, idx; |
339 | unsigned int part_size; | |
81f8a7be HG |
340 | struct device_node *np; |
341 | bool broken_hpi = false; | |
08ee80cc | 342 | |
6da24b78 | 343 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 344 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 345 | if (card->csd.structure == 3) { |
f39b2dd9 | 346 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 347 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 348 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 349 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
350 | err = -EINVAL; |
351 | goto out; | |
352 | } | |
353 | } | |
354 | ||
81f8a7be HG |
355 | np = mmc_of_find_child_device(card->host, 0); |
356 | if (np && of_device_is_compatible(np, "mmc-card")) | |
357 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
358 | of_node_put(np); | |
359 | ||
03a59437 RI |
360 | /* |
361 | * The EXT_CSD format is meant to be forward compatible. As long | |
362 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
363 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
364 | */ | |
b1ebe384 | 365 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 366 | |
f39b2dd9 PR |
367 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
368 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
369 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
370 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 371 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
372 | card->ext_csd.sectors = |
373 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
374 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
375 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
376 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
377 | |
378 | /* Cards with density > 2GiB are sector addressed */ | |
379 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
380 | mmc_card_set_blockaddr(card); |
381 | } | |
96cf5f02 | 382 | |
f39b2dd9 | 383 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 384 | mmc_select_card_type(card); |
7ea239d9 | 385 | |
f39b2dd9 PR |
386 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
387 | card->ext_csd.raw_erase_timeout_mult = | |
388 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
389 | card->ext_csd.raw_hc_erase_grp_size = | |
390 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
391 | if (card->ext_csd.rev >= 3) { |
392 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
393 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
394 | ||
395 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
396 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
397 | |
398 | /* Sleep / awake timeout in 100ns units */ | |
399 | if (sa_shift > 0 && sa_shift <= 0x17) | |
400 | card->ext_csd.sa_timeout = | |
401 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
402 | card->ext_csd.erase_group_def = |
403 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
404 | card->ext_csd.hc_erase_timeout = 300 * | |
405 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
406 | card->ext_csd.hc_erase_size = | |
407 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
408 | |
409 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
410 | |
411 | /* | |
412 | * There are two boot regions of equal size, defined in | |
413 | * multiples of 128K. | |
414 | */ | |
e0c368d5 NJ |
415 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
416 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
417 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
418 | mmc_part_add(card, part_size, | |
419 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
420 | "boot%d", idx, true, |
421 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
422 | } |
423 | } | |
dfe86cba AH |
424 | } |
425 | ||
f39b2dd9 | 426 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 427 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
428 | card->ext_csd.raw_sec_trim_mult = |
429 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
430 | card->ext_csd.raw_sec_erase_mult = | |
431 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
432 | card->ext_csd.raw_sec_feature_support = | |
433 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
434 | card->ext_csd.raw_trim_mult = | |
435 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 436 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 437 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
438 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
439 | EXT_CSD_PART_SETTING_COMPLETED) | |
440 | card->ext_csd.partition_setting_completed = 1; | |
441 | else | |
442 | card->ext_csd.partition_setting_completed = 0; | |
443 | ||
b4493eea | 444 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 445 | |
b4493eea | 446 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 447 | |
dfe86cba AH |
448 | card->ext_csd.sec_trim_mult = |
449 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
450 | card->ext_csd.sec_erase_mult = | |
451 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
452 | card->ext_csd.sec_feature_support = | |
453 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
454 | card->ext_csd.trim_timeout = 300 * | |
455 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
456 | |
457 | /* | |
458 | * Note that the call to mmc_part_add above defaults to read | |
459 | * only. If this default assumption is changed, the call must | |
460 | * take into account the value of boot_locked below. | |
461 | */ | |
462 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
463 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
464 | |
465 | /* Save power class values */ | |
466 | card->ext_csd.raw_pwr_cl_52_195 = | |
467 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
468 | card->ext_csd.raw_pwr_cl_26_195 = | |
469 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
470 | card->ext_csd.raw_pwr_cl_52_360 = | |
471 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
472 | card->ext_csd.raw_pwr_cl_26_360 = | |
473 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
474 | card->ext_csd.raw_pwr_cl_200_195 = | |
475 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
476 | card->ext_csd.raw_pwr_cl_200_360 = | |
477 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
478 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
479 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
480 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
481 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
482 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
483 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
484 | } |
485 | ||
b2499518 | 486 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
487 | /* Adjust production date as per JEDEC JESD84-B451 */ |
488 | if (card->cid.year < 2010) | |
489 | card->cid.year += 16; | |
490 | ||
950d56ac JC |
491 | /* check whether the eMMC card supports BKOPS */ |
492 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
493 | card->ext_csd.bkops = 1; | |
0501be64 AS |
494 | card->ext_csd.man_bkops_en = |
495 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
496 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
497 | card->ext_csd.raw_bkops_status = |
498 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 AS |
499 | if (!card->ext_csd.man_bkops_en) |
500 | pr_info("%s: MAN_BKOPS_EN bit is not set\n", | |
950d56ac JC |
501 | mmc_hostname(card->host)); |
502 | } | |
503 | ||
eb0d8f13 | 504 | /* check whether the eMMC card supports HPI */ |
81f8a7be | 505 | if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { |
eb0d8f13 JC |
506 | card->ext_csd.hpi = 1; |
507 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
508 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
509 | else | |
510 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
511 | /* | |
512 | * Indicate the maximum timeout to close | |
513 | * a command interrupted by HPI | |
514 | */ | |
515 | card->ext_csd.out_of_int_time = | |
516 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
517 | } | |
518 | ||
f4c5522b | 519 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 520 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
521 | |
522 | /* | |
523 | * RPMB regions are defined in multiples of 128K. | |
524 | */ | |
525 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 526 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
527 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
528 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
529 | "rpmb", 0, false, | |
530 | MMC_BLK_DATA_AREA_RPMB); | |
531 | } | |
b2499518 | 532 | } |
f4c5522b | 533 | |
5238acbe | 534 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
535 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
536 | card->erased_byte = 0xFF; | |
537 | else | |
538 | card->erased_byte = 0x0; | |
539 | ||
336c716a | 540 | /* eMMC v4.5 or later */ |
bec8726a | 541 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
542 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
543 | ||
b23cf0bd SJ |
544 | card->ext_csd.generic_cmd6_time = 10 * |
545 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
546 | card->ext_csd.power_off_longtime = 10 * |
547 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 548 | |
336c716a SJ |
549 | card->ext_csd.cache_size = |
550 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
551 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
552 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
553 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
554 | |
555 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
556 | card->ext_csd.data_sector_size = 4096; | |
557 | else | |
558 | card->ext_csd.data_sector_size = 512; | |
559 | ||
560 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
561 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
562 | card->ext_csd.data_tag_unit_size = | |
563 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
564 | (card->ext_csd.data_sector_size); | |
565 | } else { | |
566 | card->ext_csd.data_tag_unit_size = 0; | |
567 | } | |
abd9ac14 SJ |
568 | |
569 | card->ext_csd.max_packed_writes = | |
570 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
571 | card->ext_csd.max_packed_reads = | |
572 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
573 | } else { |
574 | card->ext_csd.data_sector_size = 512; | |
336c716a | 575 | } |
881d1c25 | 576 | |
0f762426 GG |
577 | /* eMMC v5 or later */ |
578 | if (card->ext_csd.rev >= 7) { | |
579 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
580 | MMC_FIRMWARE_LEN); | |
581 | card->ext_csd.ffu_capable = | |
582 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
583 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
584 | } | |
7ea239d9 | 585 | out: |
08ee80cc PR |
586 | return err; |
587 | } | |
588 | ||
076ec38a UH |
589 | static int mmc_read_ext_csd(struct mmc_card *card) |
590 | { | |
c197787c | 591 | u8 *ext_csd; |
076ec38a UH |
592 | int err; |
593 | ||
c197787c UH |
594 | if (!mmc_can_ext_csd(card)) |
595 | return 0; | |
596 | ||
076ec38a | 597 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
598 | if (err) { |
599 | /* If the host or the card can't do the switch, | |
600 | * fail more gracefully. */ | |
601 | if ((err != -EINVAL) | |
602 | && (err != -ENOSYS) | |
603 | && (err != -EFAULT)) | |
604 | return err; | |
605 | ||
606 | /* | |
607 | * High capacity cards should have this "magic" size | |
608 | * stored in their CSD. | |
609 | */ | |
610 | if (card->csd.capacity == (4096 * 512)) { | |
611 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
612 | mmc_hostname(card->host)); | |
613 | } else { | |
614 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
615 | mmc_hostname(card->host)); | |
616 | err = 0; | |
617 | } | |
618 | ||
076ec38a | 619 | return err; |
c197787c | 620 | } |
076ec38a UH |
621 | |
622 | err = mmc_decode_ext_csd(card, ext_csd); | |
623 | kfree(ext_csd); | |
624 | return err; | |
625 | } | |
626 | ||
f39b2dd9 | 627 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
628 | { |
629 | u8 *bw_ext_csd; | |
630 | int err; | |
631 | ||
f39b2dd9 PR |
632 | if (bus_width == MMC_BUS_WIDTH_1) |
633 | return 0; | |
634 | ||
08ee80cc | 635 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
636 | if (err) |
637 | return err; | |
08ee80cc | 638 | |
08ee80cc | 639 | /* only compare read only fields */ |
dd13b4ed | 640 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 641 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 642 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 643 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 644 | (card->ext_csd.rev == |
08ee80cc | 645 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 646 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 647 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 648 | (card->ext_csd.raw_card_type == |
08ee80cc | 649 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 650 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 651 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 652 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 653 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 654 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 655 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 656 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 657 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 658 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 659 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 660 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 661 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 662 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 663 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 664 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 665 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
666 | (card->ext_csd.raw_sectors[0] == |
667 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
668 | (card->ext_csd.raw_sectors[1] == | |
669 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
670 | (card->ext_csd.raw_sectors[2] == | |
671 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
672 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
673 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
674 | (card->ext_csd.raw_pwr_cl_52_195 == | |
675 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
676 | (card->ext_csd.raw_pwr_cl_26_195 == | |
677 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
678 | (card->ext_csd.raw_pwr_cl_52_360 == | |
679 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
680 | (card->ext_csd.raw_pwr_cl_26_360 == | |
681 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
682 | (card->ext_csd.raw_pwr_cl_200_195 == | |
683 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
684 | (card->ext_csd.raw_pwr_cl_200_360 == | |
685 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
686 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
687 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
688 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
689 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
690 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
691 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
692 | ||
08ee80cc PR |
693 | if (err) |
694 | err = -EINVAL; | |
695 | ||
00b41b58 | 696 | kfree(bw_ext_csd); |
7ea239d9 PO |
697 | return err; |
698 | } | |
699 | ||
51ec92e2 PO |
700 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
701 | card->raw_cid[2], card->raw_cid[3]); | |
702 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
703 | card->raw_csd[2], card->raw_csd[3]); | |
704 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
705 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
706 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 707 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
708 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
709 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
710 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
711 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 712 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 713 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
714 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
715 | card->ext_csd.enhanced_area_offset); | |
716 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
717 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
718 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 719 | |
0f762426 GG |
720 | static ssize_t mmc_fwrev_show(struct device *dev, |
721 | struct device_attribute *attr, | |
722 | char *buf) | |
723 | { | |
724 | struct mmc_card *card = mmc_dev_to_card(dev); | |
725 | ||
726 | if (card->ext_csd.rev < 7) { | |
727 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
728 | } else { | |
729 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
730 | card->ext_csd.fwrev); | |
731 | } | |
732 | } | |
733 | ||
734 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
735 | ||
51ec92e2 PO |
736 | static struct attribute *mmc_std_attrs[] = { |
737 | &dev_attr_cid.attr, | |
738 | &dev_attr_csd.attr, | |
739 | &dev_attr_date.attr, | |
dfe86cba AH |
740 | &dev_attr_erase_size.attr, |
741 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 742 | &dev_attr_fwrev.attr, |
0f762426 | 743 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
744 | &dev_attr_hwrev.attr, |
745 | &dev_attr_manfid.attr, | |
746 | &dev_attr_name.attr, | |
747 | &dev_attr_oemid.attr, | |
51e7e8b6 | 748 | &dev_attr_prv.attr, |
51ec92e2 | 749 | &dev_attr_serial.attr, |
709de99d CD |
750 | &dev_attr_enhanced_area_offset.attr, |
751 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
752 | &dev_attr_raw_rpmb_size_mult.attr, |
753 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
754 | NULL, |
755 | }; | |
d1e58212 | 756 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
757 | |
758 | static struct device_type mmc_type = { | |
d1e58212 | 759 | .groups = mmc_std_groups, |
51ec92e2 PO |
760 | }; |
761 | ||
b87d8dbf G |
762 | /* |
763 | * Select the PowerClass for the current bus width | |
764 | * If power class is defined for 4/8 bit bus in the | |
765 | * extended CSD register, select it by executing the | |
766 | * mmc_switch command. | |
767 | */ | |
2385049d SJ |
768 | static int __mmc_select_powerclass(struct mmc_card *card, |
769 | unsigned int bus_width) | |
b87d8dbf | 770 | { |
2385049d SJ |
771 | struct mmc_host *host = card->host; |
772 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 773 | unsigned int pwrclass_val = 0; |
2385049d | 774 | int err = 0; |
b87d8dbf | 775 | |
b87d8dbf G |
776 | switch (1 << host->ios.vdd) { |
777 | case MMC_VDD_165_195: | |
2385049d SJ |
778 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
779 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
780 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 781 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
782 | ext_csd->raw_pwr_cl_52_195 : |
783 | ext_csd->raw_pwr_cl_ddr_52_195; | |
784 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
785 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 786 | break; |
93fc5a47 SJ |
787 | case MMC_VDD_27_28: |
788 | case MMC_VDD_28_29: | |
789 | case MMC_VDD_29_30: | |
790 | case MMC_VDD_30_31: | |
791 | case MMC_VDD_31_32: | |
b87d8dbf G |
792 | case MMC_VDD_32_33: |
793 | case MMC_VDD_33_34: | |
794 | case MMC_VDD_34_35: | |
795 | case MMC_VDD_35_36: | |
2385049d SJ |
796 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
797 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
798 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 799 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
800 | ext_csd->raw_pwr_cl_52_360 : |
801 | ext_csd->raw_pwr_cl_ddr_52_360; | |
802 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
803 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
804 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
805 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
806 | break; |
807 | default: | |
6606110d JP |
808 | pr_warn("%s: Voltage range not supported for power class\n", |
809 | mmc_hostname(host)); | |
b87d8dbf G |
810 | return -EINVAL; |
811 | } | |
812 | ||
b87d8dbf G |
813 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
814 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
815 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
816 | else | |
817 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
818 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
819 | ||
820 | /* If the power class is different from the default value */ | |
821 | if (pwrclass_val > 0) { | |
822 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
823 | EXT_CSD_POWER_CLASS, | |
824 | pwrclass_val, | |
71fe3eb0 | 825 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
826 | } |
827 | ||
828 | return err; | |
829 | } | |
830 | ||
2385049d SJ |
831 | static int mmc_select_powerclass(struct mmc_card *card) |
832 | { | |
833 | struct mmc_host *host = card->host; | |
834 | u32 bus_width, ext_csd_bits; | |
835 | int err, ddr; | |
836 | ||
837 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 838 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
839 | return 0; |
840 | ||
841 | bus_width = host->ios.bus_width; | |
842 | /* Power class values are defined only for 4/8 bit bus */ | |
843 | if (bus_width == MMC_BUS_WIDTH_1) | |
844 | return 0; | |
845 | ||
846 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
847 | if (ddr) | |
848 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
849 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
850 | else | |
851 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
852 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
853 | ||
854 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
855 | if (err) | |
856 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
857 | mmc_hostname(host), 1 << bus_width, ddr); | |
858 | ||
859 | return err; | |
860 | } | |
861 | ||
a4924c71 | 862 | /* |
577fb131 | 863 | * Set the bus speed for the selected speed mode. |
a4924c71 | 864 | */ |
577fb131 SJ |
865 | static void mmc_set_bus_speed(struct mmc_card *card) |
866 | { | |
867 | unsigned int max_dtr = (unsigned int)-1; | |
868 | ||
0a5b6438 SJ |
869 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
870 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
871 | max_dtr = card->ext_csd.hs200_max_dtr; |
872 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
873 | max_dtr = card->ext_csd.hs_max_dtr; | |
874 | else if (max_dtr > card->csd.max_dtr) | |
875 | max_dtr = card->csd.max_dtr; | |
876 | ||
877 | mmc_set_clock(card->host, max_dtr); | |
878 | } | |
879 | ||
880 | /* | |
881 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
882 | * If the bus width is changed successfully, return the selected width value. | |
883 | * Zero is returned instead of error value if the wide width is not supported. | |
884 | */ | |
885 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 886 | { |
a4924c71 | 887 | static unsigned ext_csd_bits[] = { |
a4924c71 | 888 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 889 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
890 | }; |
891 | static unsigned bus_widths[] = { | |
a4924c71 | 892 | MMC_BUS_WIDTH_8, |
577fb131 | 893 | MMC_BUS_WIDTH_4, |
a4924c71 | 894 | }; |
577fb131 SJ |
895 | struct mmc_host *host = card->host; |
896 | unsigned idx, bus_width = 0; | |
897 | int err = 0; | |
a4924c71 | 898 | |
1c2d26e3 | 899 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
900 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
901 | return 0; | |
a4924c71 | 902 | |
577fb131 | 903 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
904 | |
905 | /* | |
906 | * Unlike SD, MMC cards dont have a configuration register to notify | |
907 | * supported bus width. So bus test command should be run to identify | |
908 | * the supported bus width or compare the ext csd values of current | |
909 | * bus width and ext csd values of 1 bit mode read earlier. | |
910 | */ | |
577fb131 | 911 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
912 | /* |
913 | * Host is capable of 8bit transfer, then switch | |
914 | * the device to work in 8bit transfer mode. If the | |
915 | * mmc switch command returns error then switch to | |
916 | * 4bit transfer mode. On success set the corresponding | |
917 | * bus width on the host. | |
918 | */ | |
919 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
920 | EXT_CSD_BUS_WIDTH, | |
921 | ext_csd_bits[idx], | |
922 | card->ext_csd.generic_cmd6_time); | |
923 | if (err) | |
924 | continue; | |
925 | ||
577fb131 SJ |
926 | bus_width = bus_widths[idx]; |
927 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 928 | |
577fb131 SJ |
929 | /* |
930 | * If controller can't handle bus width test, | |
931 | * compare ext_csd previously read in 1 bit mode | |
932 | * against ext_csd at new bus width | |
933 | */ | |
a4924c71 | 934 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 935 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 936 | else |
577fb131 SJ |
937 | err = mmc_bus_test(card, bus_width); |
938 | ||
939 | if (!err) { | |
940 | err = bus_width; | |
a4924c71 | 941 | break; |
577fb131 SJ |
942 | } else { |
943 | pr_warn("%s: switch to bus width %d failed\n", | |
944 | mmc_hostname(host), ext_csd_bits[idx]); | |
945 | } | |
a4924c71 G |
946 | } |
947 | ||
577fb131 SJ |
948 | return err; |
949 | } | |
950 | ||
951 | /* | |
952 | * Switch to the high-speed mode | |
953 | */ | |
954 | static int mmc_select_hs(struct mmc_card *card) | |
955 | { | |
956 | int err; | |
957 | ||
958 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
959 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
960 | card->ext_csd.generic_cmd6_time, | |
961 | true, true, true); | |
a4924c71 | 962 | if (!err) |
577fb131 SJ |
963 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
964 | ||
965 | return err; | |
966 | } | |
967 | ||
968 | /* | |
969 | * Activate wide bus and DDR if supported. | |
970 | */ | |
971 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
972 | { | |
973 | struct mmc_host *host = card->host; | |
974 | u32 bus_width, ext_csd_bits; | |
975 | int err = 0; | |
976 | ||
977 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
978 | return 0; | |
979 | ||
980 | bus_width = host->ios.bus_width; | |
981 | if (bus_width == MMC_BUS_WIDTH_1) | |
982 | return 0; | |
983 | ||
984 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
985 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
986 | ||
987 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
988 | EXT_CSD_BUS_WIDTH, | |
989 | ext_csd_bits, | |
990 | card->ext_csd.generic_cmd6_time); | |
991 | if (err) { | |
4b75bffc | 992 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
993 | mmc_hostname(host), 1 << bus_width); |
994 | return err; | |
995 | } | |
996 | ||
997 | /* | |
998 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
999 | * signaling. | |
1000 | * | |
1001 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1002 | * | |
1003 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1004 | * in the JEDEC spec for DDR. | |
1005 | * | |
312449ef CD |
1006 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1007 | * host controller can support this, like some of the SDHCI | |
1008 | * controller which connect to an eMMC device. Some of these | |
1009 | * host controller still needs to use 1.8v vccq for supporting | |
1010 | * DDR mode. | |
1011 | * | |
1012 | * So the sequence will be: | |
1013 | * if (host and device can both support 1.2v IO) | |
1014 | * use 1.2v IO; | |
1015 | * else if (host and device can both support 1.8v IO) | |
1016 | * use 1.8v IO; | |
1017 | * so if host and device can only support 3.3v IO, this is the | |
1018 | * last choice. | |
577fb131 SJ |
1019 | * |
1020 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1021 | */ | |
312449ef CD |
1022 | err = -EINVAL; |
1023 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1024 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1025 | |
312449ef CD |
1026 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1027 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1028 | ||
1029 | /* make sure vccq is 3.3v after switching disaster */ | |
1030 | if (err) | |
1031 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1032 | ||
1033 | if (!err) | |
1034 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1035 | |
1036 | return err; | |
1037 | } | |
1038 | ||
0a5b6438 SJ |
1039 | static int mmc_select_hs400(struct mmc_card *card) |
1040 | { | |
1041 | struct mmc_host *host = card->host; | |
1042 | int err = 0; | |
1043 | ||
1044 | /* | |
1045 | * HS400 mode requires 8-bit bus width | |
1046 | */ | |
1047 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1048 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1049 | return 0; | |
1050 | ||
1051 | /* | |
1052 | * Before switching to dual data rate operation for HS400, | |
1053 | * it is required to convert from HS200 mode to HS mode. | |
1054 | */ | |
1055 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1056 | mmc_set_bus_speed(card); | |
1057 | ||
1058 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1059 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1060 | card->ext_csd.generic_cmd6_time, | |
1061 | true, true, true); | |
1062 | if (err) { | |
4b75bffc | 1063 | pr_err("%s: switch to high-speed from hs200 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_BUS_WIDTH, | |
1070 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1071 | card->ext_csd.generic_cmd6_time); | |
1072 | if (err) { | |
4b75bffc | 1073 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1074 | mmc_hostname(host), err); |
1075 | return err; | |
1076 | } | |
1077 | ||
1078 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1079 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, | |
1080 | card->ext_csd.generic_cmd6_time, | |
1081 | true, true, true); | |
1082 | if (err) { | |
4b75bffc | 1083 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1084 | mmc_hostname(host), err); |
1085 | return err; | |
1086 | } | |
1087 | ||
1088 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1089 | mmc_set_bus_speed(card); | |
1090 | ||
1091 | return 0; | |
1092 | } | |
1093 | ||
577fb131 SJ |
1094 | /* |
1095 | * For device supporting HS200 mode, the following sequence | |
1096 | * should be done before executing the tuning process. | |
1097 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1098 | * 2. switch to HS200 mode | |
1099 | * 3. set the clock to > 52Mhz and <=200MHz | |
1100 | */ | |
1101 | static int mmc_select_hs200(struct mmc_card *card) | |
1102 | { | |
1103 | struct mmc_host *host = card->host; | |
1104 | int err = -EINVAL; | |
1105 | ||
1106 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1107 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1108 | ||
1109 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1110 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1111 | ||
1112 | /* If fails try again during next card power cycle */ | |
1113 | if (err) | |
1114 | goto err; | |
1115 | ||
1116 | /* | |
1117 | * Set the bus width(4 or 8) with host's support and | |
1118 | * switch to HS200 mode if bus width is set successfully. | |
1119 | */ | |
1120 | err = mmc_select_bus_width(card); | |
1121 | if (!IS_ERR_VALUE(err)) { | |
4509f847 | 1122 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
577fb131 SJ |
1123 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, |
1124 | card->ext_csd.generic_cmd6_time, | |
1125 | true, true, true); | |
1126 | if (!err) | |
1127 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1128 | } | |
a4924c71 G |
1129 | err: |
1130 | return err; | |
1131 | } | |
1132 | ||
577fb131 SJ |
1133 | /* |
1134 | * Activate High Speed or HS200 mode if supported. | |
1135 | */ | |
1136 | static int mmc_select_timing(struct mmc_card *card) | |
1137 | { | |
1138 | int err = 0; | |
1139 | ||
148bcab2 | 1140 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1141 | goto bus_speed; |
1142 | ||
1143 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1144 | err = mmc_select_hs200(card); | |
1145 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1146 | err = mmc_select_hs(card); | |
1147 | ||
1148 | if (err && err != -EBADMSG) | |
1149 | return err; | |
1150 | ||
1151 | if (err) { | |
1152 | pr_warn("%s: switch to %s failed\n", | |
1153 | mmc_card_hs(card) ? "high-speed" : | |
1154 | (mmc_card_hs200(card) ? "hs200" : ""), | |
1155 | mmc_hostname(card->host)); | |
1156 | err = 0; | |
1157 | } | |
1158 | ||
1159 | bus_speed: | |
1160 | /* | |
1161 | * Set the bus speed to the selected bus timing. | |
1162 | * If timing is not selected, backward compatible is the default. | |
1163 | */ | |
1164 | mmc_set_bus_speed(card); | |
1165 | return err; | |
1166 | } | |
1167 | ||
1168 | /* | |
1169 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1170 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1171 | */ |
1172 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1173 | { | |
1174 | struct mmc_host *host = card->host; | |
577fb131 | 1175 | |
0a5b6438 SJ |
1176 | /* |
1177 | * Timing should be adjusted to the HS400 target | |
1178 | * operation frequency for tuning process | |
1179 | */ | |
1180 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1181 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1182 | if (host->ops->prepare_hs400_tuning) | |
1183 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1184 | ||
63e415c6 | 1185 | return mmc_execute_tuning(card); |
577fb131 SJ |
1186 | } |
1187 | ||
7ea239d9 | 1188 | /* |
6abaa0c9 PO |
1189 | * Handle the detection and initialisation of a card. |
1190 | * | |
8769392b | 1191 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1192 | * we're trying to reinitialise. |
7ea239d9 | 1193 | */ |
8c75deae | 1194 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1195 | struct mmc_card *oldcard) |
7ea239d9 PO |
1196 | { |
1197 | struct mmc_card *card; | |
577fb131 | 1198 | int err; |
7ea239d9 | 1199 | u32 cid[4]; |
b676f039 | 1200 | u32 rocr; |
7ea239d9 PO |
1201 | |
1202 | BUG_ON(!host); | |
d84075c8 | 1203 | WARN_ON(!host->claimed); |
7ea239d9 | 1204 | |
44669034 SNX |
1205 | /* Set correct bus mode for MMC before attempting init */ |
1206 | if (!mmc_host_is_spi(host)) | |
1207 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1208 | ||
7ea239d9 PO |
1209 | /* |
1210 | * Since we're changing the OCR value, we seem to | |
1211 | * need to tell some cards to go back to the idle | |
1212 | * state. We wait 1ms to give cards time to | |
1213 | * respond. | |
c3805467 | 1214 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1215 | */ |
1216 | mmc_go_idle(host); | |
1217 | ||
1218 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1219 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1220 | if (err) |
6abaa0c9 | 1221 | goto err; |
7ea239d9 | 1222 | |
af517150 DB |
1223 | /* |
1224 | * For SPI, enable CRC as appropriate. | |
1225 | */ | |
1226 | if (mmc_host_is_spi(host)) { | |
1227 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1228 | if (err) | |
1229 | goto err; | |
1230 | } | |
1231 | ||
7ea239d9 PO |
1232 | /* |
1233 | * Fetch CID from card. | |
1234 | */ | |
af517150 DB |
1235 | if (mmc_host_is_spi(host)) |
1236 | err = mmc_send_cid(host, cid); | |
1237 | else | |
1238 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1239 | if (err) |
7ea239d9 PO |
1240 | goto err; |
1241 | ||
6abaa0c9 | 1242 | if (oldcard) { |
adf66a0d PO |
1243 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1244 | err = -ENOENT; | |
6abaa0c9 | 1245 | goto err; |
adf66a0d | 1246 | } |
6abaa0c9 PO |
1247 | |
1248 | card = oldcard; | |
1249 | } else { | |
1250 | /* | |
1251 | * Allocate card structure. | |
1252 | */ | |
51ec92e2 | 1253 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1254 | if (IS_ERR(card)) { |
1255 | err = PTR_ERR(card); | |
6abaa0c9 | 1256 | goto err; |
adf66a0d | 1257 | } |
7ea239d9 | 1258 | |
69041150 | 1259 | card->ocr = ocr; |
6abaa0c9 PO |
1260 | card->type = MMC_TYPE_MMC; |
1261 | card->rca = 1; | |
1262 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1263 | } | |
7ea239d9 | 1264 | |
eac86321 DA |
1265 | /* |
1266 | * Call the optional HC's init_card function to handle quirks. | |
1267 | */ | |
1268 | if (host->ops->init_card) | |
1269 | host->ops->init_card(host, card); | |
1270 | ||
7ea239d9 | 1271 | /* |
af517150 | 1272 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1273 | */ |
af517150 DB |
1274 | if (!mmc_host_is_spi(host)) { |
1275 | err = mmc_set_relative_addr(card); | |
1276 | if (err) | |
1277 | goto free_card; | |
7ea239d9 | 1278 | |
af517150 DB |
1279 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1280 | } | |
7ea239d9 | 1281 | |
6abaa0c9 PO |
1282 | if (!oldcard) { |
1283 | /* | |
1284 | * Fetch CSD from card. | |
1285 | */ | |
1286 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1287 | if (err) |
6abaa0c9 | 1288 | goto free_card; |
7ea239d9 | 1289 | |
bd766312 | 1290 | err = mmc_decode_csd(card); |
adf66a0d | 1291 | if (err) |
bd766312 PO |
1292 | goto free_card; |
1293 | err = mmc_decode_cid(card); | |
adf66a0d | 1294 | if (err) |
bd766312 | 1295 | goto free_card; |
6abaa0c9 | 1296 | } |
7ea239d9 | 1297 | |
3d705d14 SH |
1298 | /* |
1299 | * handling only for cards supporting DSR and hosts requesting | |
1300 | * DSR configuration | |
1301 | */ | |
1302 | if (card->csd.dsr_imp && host->dsr_req) | |
1303 | mmc_set_dsr(host); | |
1304 | ||
7ea239d9 | 1305 | /* |
89a73cf5 | 1306 | * Select card, as all following commands rely on that. |
7ea239d9 | 1307 | */ |
af517150 DB |
1308 | if (!mmc_host_is_spi(host)) { |
1309 | err = mmc_select_card(card); | |
1310 | if (err) | |
1311 | goto free_card; | |
1312 | } | |
7ea239d9 | 1313 | |
6abaa0c9 | 1314 | if (!oldcard) { |
076ec38a UH |
1315 | /* Read extended CSD. */ |
1316 | err = mmc_read_ext_csd(card); | |
17b0429d | 1317 | if (err) |
6abaa0c9 | 1318 | goto free_card; |
b676f039 PR |
1319 | |
1320 | /* If doing byte addressing, check if required to do sector | |
1321 | * addressing. Handle the case of <2GB cards needing sector | |
1322 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1323 | * ocr register has bit 30 set for sector addressing. | |
1324 | */ | |
1325 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1326 | mmc_card_set_blockaddr(card); | |
1327 | ||
dfe86cba AH |
1328 | /* Erase size depends on CSD and Extended CSD */ |
1329 | mmc_set_erase_size(card); | |
6abaa0c9 | 1330 | } |
7ea239d9 | 1331 | |
709de99d CD |
1332 | /* |
1333 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1334 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1335 | */ |
69803d4f | 1336 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1337 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1338 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1339 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1340 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1341 | |
1342 | if (err && err != -EBADMSG) | |
1343 | goto free_card; | |
1344 | ||
1345 | if (err) { | |
1346 | err = 0; | |
1347 | /* | |
1348 | * Just disable enhanced area off & sz | |
1349 | * will try to enable ERASE_GROUP_DEF | |
1350 | * during next time reinit | |
1351 | */ | |
1352 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1353 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1354 | } else { | |
1355 | card->ext_csd.erase_group_def = 1; | |
1356 | /* | |
1357 | * enable ERASE_GRP_DEF successfully. | |
1358 | * This will affect the erase size, so | |
1359 | * here need to reset erase size | |
1360 | */ | |
1361 | mmc_set_erase_size(card); | |
1362 | } | |
1363 | } | |
1364 | ||
41e2a489 PR |
1365 | /* |
1366 | * Ensure eMMC user default partition is enabled | |
1367 | */ | |
371a689f AW |
1368 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1369 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1370 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1371 | card->ext_csd.part_config, | |
1372 | card->ext_csd.part_time); | |
1373 | if (err && err != -EBADMSG) | |
1374 | goto free_card; | |
41e2a489 PR |
1375 | } |
1376 | ||
bec8726a | 1377 | /* |
43235679 | 1378 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1379 | */ |
43235679 | 1380 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1381 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1382 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1383 | EXT_CSD_POWER_ON, | |
1384 | card->ext_csd.generic_cmd6_time); | |
1385 | if (err && err != -EBADMSG) | |
1386 | goto free_card; | |
bec8726a | 1387 | |
96a85d54 G |
1388 | /* |
1389 | * The err can be -EBADMSG or 0, | |
1390 | * so check for success and update the flag | |
1391 | */ | |
1392 | if (!err) | |
e6c08586 | 1393 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1394 | } |
bec8726a | 1395 | |
89a73cf5 | 1396 | /* |
577fb131 | 1397 | * Select timing interface |
dfc13e84 | 1398 | */ |
577fb131 SJ |
1399 | err = mmc_select_timing(card); |
1400 | if (err) | |
1401 | goto free_card; | |
dfc13e84 | 1402 | |
a4924c71 | 1403 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1404 | err = mmc_hs200_tuning(card); |
1405 | if (err) | |
4b75bffc | 1406 | goto free_card; |
0a5b6438 SJ |
1407 | |
1408 | err = mmc_select_hs400(card); | |
1409 | if (err) | |
4b75bffc | 1410 | goto free_card; |
577fb131 SJ |
1411 | } else if (mmc_card_hs(card)) { |
1412 | /* Select the desired bus width optionally */ | |
1413 | err = mmc_select_bus_width(card); | |
1414 | if (!IS_ERR_VALUE(err)) { | |
1415 | err = mmc_select_hs_ddr(card); | |
1416 | if (err) | |
4b75bffc | 1417 | goto free_card; |
ef0b27d4 | 1418 | } |
89a73cf5 PO |
1419 | } |
1420 | ||
2385049d SJ |
1421 | /* |
1422 | * Choose the power class with selected bus interface | |
1423 | */ | |
1424 | mmc_select_powerclass(card); | |
1425 | ||
52d0974e SJ |
1426 | /* |
1427 | * Enable HPI feature (if supported) | |
1428 | */ | |
1429 | if (card->ext_csd.hpi) { | |
1430 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1431 | EXT_CSD_HPI_MGMT, 1, | |
1432 | card->ext_csd.generic_cmd6_time); | |
1433 | if (err && err != -EBADMSG) | |
1434 | goto free_card; | |
1435 | if (err) { | |
6606110d JP |
1436 | pr_warn("%s: Enabling HPI failed\n", |
1437 | mmc_hostname(card->host)); | |
52d0974e SJ |
1438 | err = 0; |
1439 | } else | |
1440 | card->ext_csd.hpi_en = 1; | |
1441 | } | |
1442 | ||
881d1c25 SJ |
1443 | /* |
1444 | * If cache size is higher than 0, this indicates | |
1445 | * the existence of cache and it can be turned on. | |
1446 | */ | |
7536d3f8 | 1447 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1448 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1449 | EXT_CSD_CACHE_CTRL, 1, |
1450 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1451 | if (err && err != -EBADMSG) |
1452 | goto free_card; | |
1453 | ||
1454 | /* | |
1455 | * Only if no error, cache is turned on successfully. | |
1456 | */ | |
8bc0678b | 1457 | if (err) { |
6606110d JP |
1458 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1459 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1460 | card->ext_csd.cache_ctrl = 0; |
1461 | err = 0; | |
1462 | } else { | |
1463 | card->ext_csd.cache_ctrl = 1; | |
1464 | } | |
881d1c25 SJ |
1465 | } |
1466 | ||
abd9ac14 SJ |
1467 | /* |
1468 | * The mandatory minimum values are defined for packed command. | |
1469 | * read: 5, write: 3 | |
1470 | */ | |
1471 | if (card->ext_csd.max_packed_writes >= 3 && | |
1472 | card->ext_csd.max_packed_reads >= 5 && | |
1473 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1474 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1475 | EXT_CSD_EXP_EVENTS_CTRL, | |
1476 | EXT_CSD_PACKED_EVENT_EN, | |
1477 | card->ext_csd.generic_cmd6_time); | |
1478 | if (err && err != -EBADMSG) | |
1479 | goto free_card; | |
1480 | if (err) { | |
1481 | pr_warn("%s: Enabling packed event failed\n", | |
1482 | mmc_hostname(card->host)); | |
1483 | card->ext_csd.packed_event_en = 0; | |
1484 | err = 0; | |
1485 | } else { | |
1486 | card->ext_csd.packed_event_en = 1; | |
1487 | } | |
1488 | } | |
1489 | ||
6abaa0c9 PO |
1490 | if (!oldcard) |
1491 | host->card = card; | |
1492 | ||
17b0429d | 1493 | return 0; |
6abaa0c9 PO |
1494 | |
1495 | free_card: | |
1496 | if (!oldcard) | |
1497 | mmc_remove_card(card); | |
1498 | err: | |
adf66a0d | 1499 | return err; |
6abaa0c9 PO |
1500 | } |
1501 | ||
07a68216 UH |
1502 | static int mmc_can_sleep(struct mmc_card *card) |
1503 | { | |
1504 | return (card && card->ext_csd.rev >= 3); | |
1505 | } | |
1506 | ||
1507 | static int mmc_sleep(struct mmc_host *host) | |
1508 | { | |
1509 | struct mmc_command cmd = {0}; | |
1510 | struct mmc_card *card = host->card; | |
cb962e04 | 1511 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1512 | int err; |
1513 | ||
07a68216 UH |
1514 | err = mmc_deselect_cards(host); |
1515 | if (err) | |
1516 | return err; | |
1517 | ||
1518 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1519 | cmd.arg = card->rca << 16; | |
1520 | cmd.arg |= 1 << 15; | |
1521 | ||
cb962e04 UH |
1522 | /* |
1523 | * If the max_busy_timeout of the host is specified, validate it against | |
1524 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1525 | * from doing hw busy detection, which is done by converting to a R1 | |
1526 | * response instead of a R1B. | |
1527 | */ | |
1528 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1529 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1530 | } else { | |
1531 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1532 | cmd.busy_timeout = timeout_ms; | |
1533 | } | |
1534 | ||
07a68216 UH |
1535 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1536 | if (err) | |
1537 | return err; | |
1538 | ||
1539 | /* | |
1540 | * If the host does not wait while the card signals busy, then we will | |
1541 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1542 | * SEND_STATUS command to poll the status because that command (and most | |
1543 | * others) is invalid while the card sleeps. | |
1544 | */ | |
cb962e04 UH |
1545 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1546 | mmc_delay(timeout_ms); | |
07a68216 UH |
1547 | |
1548 | return err; | |
1549 | } | |
1550 | ||
e6c08586 UH |
1551 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1552 | { | |
1553 | return card && | |
1554 | mmc_card_mmc(card) && | |
1555 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1556 | } | |
1557 | ||
1558 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1559 | { | |
1560 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1561 | int err; | |
1562 | ||
1563 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1564 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1565 | timeout = card->ext_csd.power_off_longtime; | |
1566 | ||
878e200b UH |
1567 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1568 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1569 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1570 | if (err) |
1571 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1572 | mmc_hostname(card->host), timeout); | |
1573 | ||
1574 | /* Disable the power off notification after the switch operation. */ | |
1575 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1576 | ||
1577 | return err; | |
1578 | } | |
1579 | ||
6abaa0c9 PO |
1580 | /* |
1581 | * Host is being removed. Free up the current card. | |
1582 | */ | |
1583 | static void mmc_remove(struct mmc_host *host) | |
1584 | { | |
1585 | BUG_ON(!host); | |
1586 | BUG_ON(!host->card); | |
1587 | ||
1588 | mmc_remove_card(host->card); | |
1589 | host->card = NULL; | |
1590 | } | |
1591 | ||
d3049504 AH |
1592 | /* |
1593 | * Card detection - card is alive. | |
1594 | */ | |
1595 | static int mmc_alive(struct mmc_host *host) | |
1596 | { | |
1597 | return mmc_send_status(host->card, NULL); | |
1598 | } | |
1599 | ||
6abaa0c9 PO |
1600 | /* |
1601 | * Card detection callback from host. | |
1602 | */ | |
1603 | static void mmc_detect(struct mmc_host *host) | |
1604 | { | |
1605 | int err; | |
1606 | ||
1607 | BUG_ON(!host); | |
1608 | BUG_ON(!host->card); | |
1609 | ||
e94cfef6 | 1610 | mmc_get_card(host->card); |
6abaa0c9 PO |
1611 | |
1612 | /* | |
1613 | * Just check if our card has been removed. | |
1614 | */ | |
d3049504 | 1615 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1616 | |
e94cfef6 | 1617 | mmc_put_card(host->card); |
6abaa0c9 | 1618 | |
17b0429d | 1619 | if (err) { |
4101c16a | 1620 | mmc_remove(host); |
6abaa0c9 PO |
1621 | |
1622 | mmc_claim_host(host); | |
1623 | mmc_detach_bus(host); | |
7f7e4129 | 1624 | mmc_power_off(host); |
6abaa0c9 PO |
1625 | mmc_release_host(host); |
1626 | } | |
1627 | } | |
1628 | ||
03d071fc | 1629 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1630 | { |
c3805467 | 1631 | int err = 0; |
03d071fc UH |
1632 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1633 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1634 | |
6abaa0c9 PO |
1635 | BUG_ON(!host); |
1636 | BUG_ON(!host->card); | |
7ea239d9 | 1637 | |
6abaa0c9 | 1638 | mmc_claim_host(host); |
881d926d | 1639 | |
9ec775f7 UH |
1640 | if (mmc_card_suspended(host->card)) |
1641 | goto out; | |
1642 | ||
39b9431b UH |
1643 | if (mmc_card_doing_bkops(host->card)) { |
1644 | err = mmc_stop_bkops(host->card); | |
1645 | if (err) | |
1646 | goto out; | |
1647 | } | |
1648 | ||
10e5d965 | 1649 | err = mmc_flush_cache(host->card); |
881d926d ME |
1650 | if (err) |
1651 | goto out; | |
1652 | ||
43235679 | 1653 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1654 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1655 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1656 | else if (mmc_can_sleep(host->card)) |
1657 | err = mmc_sleep(host); | |
e6c08586 | 1658 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1659 | err = mmc_deselect_cards(host); |
95cdfb72 | 1660 | |
9ec775f7 | 1661 | if (!err) { |
74590263 | 1662 | mmc_power_off(host); |
9ec775f7 UH |
1663 | mmc_card_set_suspended(host->card); |
1664 | } | |
881d926d ME |
1665 | out: |
1666 | mmc_release_host(host); | |
c3805467 | 1667 | return err; |
6abaa0c9 | 1668 | } |
7ea239d9 | 1669 | |
03d071fc | 1670 | /* |
0cb403a2 | 1671 | * Suspend callback |
03d071fc UH |
1672 | */ |
1673 | static int mmc_suspend(struct mmc_host *host) | |
1674 | { | |
0cb403a2 UH |
1675 | int err; |
1676 | ||
1677 | err = _mmc_suspend(host, true); | |
1678 | if (!err) { | |
1679 | pm_runtime_disable(&host->card->dev); | |
1680 | pm_runtime_set_suspended(&host->card->dev); | |
1681 | } | |
1682 | ||
1683 | return err; | |
03d071fc UH |
1684 | } |
1685 | ||
6abaa0c9 | 1686 | /* |
6abaa0c9 PO |
1687 | * This function tries to determine if the same card is still present |
1688 | * and, if so, restore all state to it. | |
1689 | */ | |
0cb403a2 | 1690 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1691 | { |
9ec775f7 | 1692 | int err = 0; |
6abaa0c9 PO |
1693 | |
1694 | BUG_ON(!host); | |
1695 | BUG_ON(!host->card); | |
1696 | ||
1697 | mmc_claim_host(host); | |
9ec775f7 UH |
1698 | |
1699 | if (!mmc_card_suspended(host->card)) | |
1700 | goto out; | |
1701 | ||
69041150 | 1702 | mmc_power_up(host, host->card->ocr); |
69041150 | 1703 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1704 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1705 | |
9ec775f7 UH |
1706 | out: |
1707 | mmc_release_host(host); | |
95cdfb72 | 1708 | return err; |
6abaa0c9 PO |
1709 | } |
1710 | ||
9ec775f7 UH |
1711 | /* |
1712 | * Shutdown callback | |
1713 | */ | |
1714 | static int mmc_shutdown(struct mmc_host *host) | |
1715 | { | |
1716 | int err = 0; | |
1717 | ||
1718 | /* | |
1719 | * In a specific case for poweroff notify, we need to resume the card | |
1720 | * before we can shutdown it properly. | |
1721 | */ | |
1722 | if (mmc_can_poweroff_notify(host->card) && | |
1723 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1724 | err = _mmc_resume(host); |
9ec775f7 UH |
1725 | |
1726 | if (!err) | |
1727 | err = _mmc_suspend(host, false); | |
1728 | ||
1729 | return err; | |
1730 | } | |
c4d770d7 | 1731 | |
0cb403a2 UH |
1732 | /* |
1733 | * Callback for resume. | |
1734 | */ | |
1735 | static int mmc_resume(struct mmc_host *host) | |
1736 | { | |
4d223782 | 1737 | int err = 0; |
0cb403a2 | 1738 | |
4d223782 UH |
1739 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1740 | err = _mmc_resume(host); | |
1741 | pm_runtime_set_active(&host->card->dev); | |
1742 | pm_runtime_mark_last_busy(&host->card->dev); | |
1743 | } | |
0cb403a2 UH |
1744 | pm_runtime_enable(&host->card->dev); |
1745 | ||
1746 | return err; | |
1747 | } | |
1748 | ||
c4d770d7 UH |
1749 | /* |
1750 | * Callback for runtime_suspend. | |
1751 | */ | |
1752 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1753 | { | |
1754 | int err; | |
1755 | ||
1756 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1757 | return 0; | |
1758 | ||
0cb403a2 | 1759 | err = _mmc_suspend(host, true); |
0cc81a8c | 1760 | if (err) |
f42cf8d6 | 1761 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 1762 | mmc_hostname(host), err); |
c4d770d7 | 1763 | |
c4d770d7 UH |
1764 | return err; |
1765 | } | |
1766 | ||
1767 | /* | |
1768 | * Callback for runtime_resume. | |
1769 | */ | |
1770 | static int mmc_runtime_resume(struct mmc_host *host) | |
1771 | { | |
1772 | int err; | |
1773 | ||
4d223782 | 1774 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1775 | return 0; |
1776 | ||
0cb403a2 | 1777 | err = _mmc_resume(host); |
c4d770d7 | 1778 | if (err) |
f42cf8d6 | 1779 | pr_err("%s: error %d doing aggressive resume\n", |
c4d770d7 UH |
1780 | mmc_hostname(host), err); |
1781 | ||
c4d770d7 UH |
1782 | return 0; |
1783 | } | |
1784 | ||
12ae637f | 1785 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1786 | { |
12ae637f OBC |
1787 | int ret; |
1788 | ||
eae1aeee | 1789 | mmc_claim_host(host); |
69041150 | 1790 | ret = mmc_init_card(host, host->card->ocr, host->card); |
eae1aeee | 1791 | mmc_release_host(host); |
12ae637f OBC |
1792 | |
1793 | return ret; | |
eae1aeee AH |
1794 | } |
1795 | ||
f855a371 JR |
1796 | int mmc_can_reset(struct mmc_card *card) |
1797 | { | |
1798 | u8 rst_n_function; | |
1799 | ||
1800 | rst_n_function = card->ext_csd.rst_n_function; | |
1801 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
1802 | return 0; | |
1803 | return 1; | |
1804 | } | |
1805 | EXPORT_SYMBOL(mmc_can_reset); | |
1806 | ||
1807 | static int mmc_reset(struct mmc_host *host) | |
1808 | { | |
1809 | struct mmc_card *card = host->card; | |
1810 | u32 status; | |
1811 | ||
1812 | if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) | |
1813 | return -EOPNOTSUPP; | |
1814 | ||
1815 | if (!mmc_can_reset(card)) | |
1816 | return -EOPNOTSUPP; | |
1817 | ||
1818 | mmc_host_clk_hold(host); | |
1819 | mmc_set_clock(host, host->f_init); | |
1820 | ||
1821 | host->ops->hw_reset(host); | |
1822 | ||
1823 | /* If the reset has happened, then a status command will fail */ | |
1824 | if (!mmc_send_status(card, &status)) { | |
1825 | mmc_host_clk_release(host); | |
1826 | return -ENOSYS; | |
1827 | } | |
1828 | ||
1829 | /* Set initial state and call mmc_set_ios */ | |
1830 | mmc_set_initial_state(host); | |
1831 | mmc_host_clk_release(host); | |
1832 | ||
1833 | return mmc_power_restore(host); | |
1834 | } | |
1835 | ||
6abaa0c9 PO |
1836 | static const struct mmc_bus_ops mmc_ops = { |
1837 | .remove = mmc_remove, | |
1838 | .detect = mmc_detect, | |
1839 | .suspend = mmc_suspend, | |
1840 | .resume = mmc_resume, | |
c4d770d7 UH |
1841 | .runtime_suspend = mmc_runtime_suspend, |
1842 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1843 | .power_restore = mmc_power_restore, |
d3049504 | 1844 | .alive = mmc_alive, |
486fdbbc | 1845 | .shutdown = mmc_shutdown, |
f855a371 | 1846 | .reset = mmc_reset, |
6abaa0c9 PO |
1847 | }; |
1848 | ||
1849 | /* | |
1850 | * Starting point for MMC card init. | |
1851 | */ | |
807e8e40 | 1852 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1853 | { |
1854 | int err; | |
69041150 | 1855 | u32 ocr, rocr; |
6abaa0c9 PO |
1856 | |
1857 | BUG_ON(!host); | |
d84075c8 | 1858 | WARN_ON(!host->claimed); |
6abaa0c9 | 1859 | |
44669034 SNX |
1860 | /* Set correct bus mode for MMC before attempting attach */ |
1861 | if (!mmc_host_is_spi(host)) | |
1862 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1863 | ||
807e8e40 AR |
1864 | err = mmc_send_op_cond(host, 0, &ocr); |
1865 | if (err) | |
1866 | return err; | |
1867 | ||
2501c917 | 1868 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
1869 | if (host->ocr_avail_mmc) |
1870 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1871 | |
af517150 DB |
1872 | /* |
1873 | * We need to get OCR a different way for SPI. | |
1874 | */ | |
1875 | if (mmc_host_is_spi(host)) { | |
1876 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1877 | if (err) | |
1878 | goto err; | |
1879 | } | |
1880 | ||
69041150 | 1881 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
1882 | |
1883 | /* | |
1884 | * Can we support the voltage of the card? | |
1885 | */ | |
69041150 | 1886 | if (!rocr) { |
109b5bed | 1887 | err = -EINVAL; |
6abaa0c9 | 1888 | goto err; |
109b5bed | 1889 | } |
6abaa0c9 PO |
1890 | |
1891 | /* | |
1892 | * Detect and init the card. | |
1893 | */ | |
69041150 | 1894 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 1895 | if (err) |
6abaa0c9 PO |
1896 | goto err; |
1897 | ||
1898 | mmc_release_host(host); | |
4101c16a | 1899 | err = mmc_add_card(host->card); |
807e8e40 | 1900 | mmc_claim_host(host); |
7ea239d9 | 1901 | if (err) |
2986d0bf | 1902 | goto remove_card; |
7ea239d9 PO |
1903 | |
1904 | return 0; | |
1905 | ||
2986d0bf | 1906 | remove_card: |
807e8e40 | 1907 | mmc_release_host(host); |
6abaa0c9 | 1908 | mmc_remove_card(host->card); |
2986d0bf | 1909 | mmc_claim_host(host); |
807e8e40 | 1910 | host->card = NULL; |
7ea239d9 PO |
1911 | err: |
1912 | mmc_detach_bus(host); | |
7ea239d9 | 1913 | |
a3c76eb9 | 1914 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1915 | mmc_hostname(host), err); |
1916 | ||
adf66a0d | 1917 | return err; |
7ea239d9 | 1918 | } |