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Commit | Line | Data |
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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" | |
436f8daa | 24 | #include "host.h" |
4101c16a | 25 | #include "bus.h" |
7ea239d9 | 26 | #include "mmc_ops.h" |
4c4cb171 | 27 | #include "sd_ops.h" |
7ea239d9 PO |
28 | |
29 | static const unsigned int tran_exp[] = { | |
30 | 10000, 100000, 1000000, 10000000, | |
31 | 0, 0, 0, 0 | |
32 | }; | |
33 | ||
34 | static const unsigned char tran_mant[] = { | |
35 | 0, 10, 12, 13, 15, 20, 25, 30, | |
36 | 35, 40, 45, 50, 55, 60, 70, 80, | |
37 | }; | |
38 | ||
39 | static const unsigned int tacc_exp[] = { | |
40 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
41 | }; | |
42 | ||
43 | static const unsigned int tacc_mant[] = { | |
44 | 0, 10, 12, 13, 15, 20, 25, 30, | |
45 | 35, 40, 45, 50, 55, 60, 70, 80, | |
46 | }; | |
47 | ||
48 | #define UNSTUFF_BITS(resp,start,size) \ | |
49 | ({ \ | |
50 | const int __size = size; \ | |
51 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
52 | const int __off = 3 - ((start) / 32); \ | |
53 | const int __shft = (start) & 31; \ | |
54 | u32 __res; \ | |
55 | \ | |
56 | __res = resp[__off] >> __shft; \ | |
57 | if (__size + __shft > 32) \ | |
58 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
59 | __res & __mask; \ | |
60 | }) | |
61 | ||
62 | /* | |
63 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
64 | */ | |
bd766312 | 65 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
66 | { |
67 | u32 *resp = card->raw_cid; | |
68 | ||
69 | /* | |
70 | * The selection of the format here is based upon published | |
71 | * specs from sandisk and from what people have reported. | |
72 | */ | |
73 | switch (card->csd.mmca_vsn) { | |
74 | case 0: /* MMC v1.0 - v1.2 */ | |
75 | case 1: /* MMC v1.4 */ | |
76 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
77 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
78 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
79 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
80 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
81 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
82 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
83 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
84 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
85 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
86 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
87 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
88 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
89 | break; | |
90 | ||
91 | case 2: /* MMC v2.0 - v2.2 */ | |
92 | case 3: /* MMC v3.1 - v3.3 */ | |
93 | case 4: /* MMC v4 */ | |
94 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
95 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
96 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
97 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
98 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
99 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
100 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
101 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 102 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
103 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
104 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
105 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
106 | break; | |
107 | ||
108 | default: | |
a3c76eb9 | 109 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 110 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 111 | return -EINVAL; |
7ea239d9 | 112 | } |
bd766312 PO |
113 | |
114 | return 0; | |
7ea239d9 PO |
115 | } |
116 | ||
dfe86cba AH |
117 | static void mmc_set_erase_size(struct mmc_card *card) |
118 | { | |
119 | if (card->ext_csd.erase_group_def & 1) | |
120 | card->erase_size = card->ext_csd.hc_erase_size; | |
121 | else | |
122 | card->erase_size = card->csd.erase_size; | |
123 | ||
124 | mmc_init_erase(card); | |
125 | } | |
126 | ||
7ea239d9 PO |
127 | /* |
128 | * Given a 128-bit response, decode to our card CSD structure. | |
129 | */ | |
bd766312 | 130 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
131 | { |
132 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 133 | unsigned int e, m, a, b; |
7ea239d9 PO |
134 | u32 *resp = card->raw_csd; |
135 | ||
136 | /* | |
137 | * We only understand CSD structure v1.1 and v1.2. | |
138 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 139 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 140 | */ |
6da24b78 KP |
141 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
142 | if (csd->structure == 0) { | |
a3c76eb9 | 143 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 144 | mmc_hostname(card->host), csd->structure); |
bd766312 | 145 | return -EINVAL; |
7ea239d9 PO |
146 | } |
147 | ||
148 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
149 | m = UNSTUFF_BITS(resp, 115, 4); | |
150 | e = UNSTUFF_BITS(resp, 112, 3); | |
151 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
152 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
153 | ||
154 | m = UNSTUFF_BITS(resp, 99, 4); | |
155 | e = UNSTUFF_BITS(resp, 96, 3); | |
156 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
157 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
158 | ||
159 | e = UNSTUFF_BITS(resp, 47, 3); | |
160 | m = UNSTUFF_BITS(resp, 62, 12); | |
161 | csd->capacity = (1 + m) << (e + 2); | |
162 | ||
163 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
164 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
165 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
166 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 167 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
168 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
169 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
170 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 171 | |
dfe86cba AH |
172 | if (csd->write_blkbits >= 9) { |
173 | a = UNSTUFF_BITS(resp, 42, 5); | |
174 | b = UNSTUFF_BITS(resp, 37, 5); | |
175 | csd->erase_size = (a + 1) * (b + 1); | |
176 | csd->erase_size <<= csd->write_blkbits - 9; | |
177 | } | |
178 | ||
bd766312 | 179 | return 0; |
7ea239d9 PO |
180 | } |
181 | ||
96cf5f02 SJ |
182 | static void mmc_select_card_type(struct mmc_card *card) |
183 | { | |
184 | struct mmc_host *host = card->host; | |
0a5b6438 | 185 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 186 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 187 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 188 | unsigned int avail_type = 0; |
96cf5f02 | 189 | |
2415c0ef SJ |
190 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
191 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 192 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
193 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
194 | } | |
96cf5f02 SJ |
195 | |
196 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 197 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 198 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
199 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
200 | } | |
96cf5f02 | 201 | |
2415c0ef SJ |
202 | if (caps & MMC_CAP_1_8V_DDR && |
203 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 204 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
205 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
206 | } | |
207 | ||
208 | if (caps & MMC_CAP_1_2V_DDR && | |
209 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
210 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
211 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
212 | } | |
96cf5f02 | 213 | |
2415c0ef SJ |
214 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
215 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 216 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
217 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
218 | } | |
219 | ||
220 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
221 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 222 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
223 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
224 | } | |
96cf5f02 | 225 | |
0a5b6438 SJ |
226 | if (caps2 & MMC_CAP2_HS400_1_8V && |
227 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
228 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
229 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
230 | } | |
231 | ||
232 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
233 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
234 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
235 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
236 | } | |
237 | ||
96cf5f02 | 238 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 239 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 240 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
241 | } |
242 | ||
b4493eea GS |
243 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
244 | { | |
994324bb GS |
245 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
246 | ||
247 | /* | |
248 | * Disable these attributes by default | |
249 | */ | |
250 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
251 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
252 | |
253 | /* | |
254 | * Enhanced area feature support -- check whether the eMMC | |
255 | * card has the Enhanced area enabled. If so, export enhanced | |
256 | * area offset and size to user by adding sysfs interface. | |
257 | */ | |
258 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
259 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
260 | if (card->ext_csd.partition_setting_completed) { |
261 | hc_erase_grp_sz = | |
262 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
263 | hc_wp_grp_sz = | |
264 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 265 | |
994324bb GS |
266 | /* |
267 | * calculate the enhanced data area offset, in bytes | |
268 | */ | |
269 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
270 | (((unsigned long long)ext_csd[139]) << 24) + |
271 | (((unsigned long long)ext_csd[138]) << 16) + | |
272 | (((unsigned long long)ext_csd[137]) << 8) + | |
273 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
274 | if (mmc_card_blockaddr(card)) |
275 | card->ext_csd.enhanced_area_offset <<= 9; | |
276 | /* | |
277 | * calculate the enhanced data area size, in kilobytes | |
278 | */ | |
279 | card->ext_csd.enhanced_area_size = | |
280 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
281 | ext_csd[140]; | |
282 | card->ext_csd.enhanced_area_size *= | |
283 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
284 | card->ext_csd.enhanced_area_size <<= 9; | |
285 | } else { | |
286 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
287 | mmc_hostname(card->host)); | |
288 | } | |
b4493eea GS |
289 | } |
290 | } | |
291 | ||
292 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
293 | { | |
b4493eea | 294 | int idx; |
994324bb GS |
295 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
296 | unsigned int part_size; | |
b4493eea GS |
297 | |
298 | /* | |
299 | * General purpose partition feature support -- | |
300 | * If ext_csd has the size of general purpose partitions, | |
301 | * set size, part_cfg, partition name in mmc_part. | |
302 | */ | |
303 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
304 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
305 | hc_erase_grp_sz = |
306 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
307 | hc_wp_grp_sz = | |
308 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
309 | |
310 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
311 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
312 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
313 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
314 | continue; | |
994324bb GS |
315 | if (card->ext_csd.partition_setting_completed == 0) { |
316 | pr_warn("%s: has partition size defined without partition complete\n", | |
317 | mmc_hostname(card->host)); | |
318 | break; | |
319 | } | |
b4493eea GS |
320 | part_size = |
321 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
322 | << 16) + | |
323 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
324 | << 8) + | |
325 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
326 | part_size *= (size_t)(hc_erase_grp_sz * | |
327 | hc_wp_grp_sz); | |
328 | mmc_part_add(card, part_size << 19, | |
329 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
330 | "gp%d", idx, false, | |
331 | MMC_BLK_DATA_AREA_GP); | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
1c447116 AH |
336 | /* Minimum partition switch timeout in milliseconds */ |
337 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
338 | ||
08ee80cc PR |
339 | /* |
340 | * Decode extended CSD. | |
341 | */ | |
076ec38a | 342 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 343 | { |
e0c368d5 NJ |
344 | int err = 0, idx; |
345 | unsigned int part_size; | |
81f8a7be HG |
346 | struct device_node *np; |
347 | bool broken_hpi = false; | |
08ee80cc | 348 | |
6da24b78 | 349 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 350 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 351 | if (card->csd.structure == 3) { |
f39b2dd9 | 352 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 353 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 354 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 355 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
356 | err = -EINVAL; |
357 | goto out; | |
358 | } | |
359 | } | |
360 | ||
81f8a7be HG |
361 | np = mmc_of_find_child_device(card->host, 0); |
362 | if (np && of_device_is_compatible(np, "mmc-card")) | |
363 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
364 | of_node_put(np); | |
365 | ||
03a59437 RI |
366 | /* |
367 | * The EXT_CSD format is meant to be forward compatible. As long | |
368 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
369 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
370 | */ | |
b1ebe384 | 371 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 372 | |
f39b2dd9 PR |
373 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
374 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
375 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
376 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 377 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
378 | card->ext_csd.sectors = |
379 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
380 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
381 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
382 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
383 | |
384 | /* Cards with density > 2GiB are sector addressed */ | |
385 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
386 | mmc_card_set_blockaddr(card); |
387 | } | |
96cf5f02 | 388 | |
f39b2dd9 | 389 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 390 | mmc_select_card_type(card); |
7ea239d9 | 391 | |
f39b2dd9 PR |
392 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
393 | card->ext_csd.raw_erase_timeout_mult = | |
394 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
395 | card->ext_csd.raw_hc_erase_grp_size = | |
396 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
397 | if (card->ext_csd.rev >= 3) { |
398 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
399 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
400 | ||
401 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
402 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
403 | /* Some eMMC set the value too low so set a minimum */ |
404 | if (card->ext_csd.part_time && | |
405 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
406 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
407 | |
408 | /* Sleep / awake timeout in 100ns units */ | |
409 | if (sa_shift > 0 && sa_shift <= 0x17) | |
410 | card->ext_csd.sa_timeout = | |
411 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
412 | card->ext_csd.erase_group_def = |
413 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
414 | card->ext_csd.hc_erase_timeout = 300 * | |
415 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
416 | card->ext_csd.hc_erase_size = | |
417 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
418 | |
419 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
420 | |
421 | /* | |
422 | * There are two boot regions of equal size, defined in | |
423 | * multiples of 128K. | |
424 | */ | |
e0c368d5 NJ |
425 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
426 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
427 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
428 | mmc_part_add(card, part_size, | |
429 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
430 | "boot%d", idx, true, |
431 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
432 | } |
433 | } | |
dfe86cba AH |
434 | } |
435 | ||
f39b2dd9 | 436 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 437 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
438 | card->ext_csd.raw_sec_trim_mult = |
439 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
440 | card->ext_csd.raw_sec_erase_mult = | |
441 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
442 | card->ext_csd.raw_sec_feature_support = | |
443 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
444 | card->ext_csd.raw_trim_mult = | |
445 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 446 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 447 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 448 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
449 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
450 | EXT_CSD_PART_SETTING_COMPLETED) | |
451 | card->ext_csd.partition_setting_completed = 1; | |
452 | else | |
453 | card->ext_csd.partition_setting_completed = 0; | |
454 | ||
b4493eea | 455 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 456 | |
b4493eea | 457 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 458 | |
dfe86cba AH |
459 | card->ext_csd.sec_trim_mult = |
460 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
461 | card->ext_csd.sec_erase_mult = | |
462 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
463 | card->ext_csd.sec_feature_support = | |
464 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
465 | card->ext_csd.trim_timeout = 300 * | |
466 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
467 | |
468 | /* | |
469 | * Note that the call to mmc_part_add above defaults to read | |
470 | * only. If this default assumption is changed, the call must | |
471 | * take into account the value of boot_locked below. | |
472 | */ | |
473 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
474 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
475 | |
476 | /* Save power class values */ | |
477 | card->ext_csd.raw_pwr_cl_52_195 = | |
478 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
479 | card->ext_csd.raw_pwr_cl_26_195 = | |
480 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
481 | card->ext_csd.raw_pwr_cl_52_360 = | |
482 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
483 | card->ext_csd.raw_pwr_cl_26_360 = | |
484 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
485 | card->ext_csd.raw_pwr_cl_200_195 = | |
486 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
487 | card->ext_csd.raw_pwr_cl_200_360 = | |
488 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
489 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
490 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
491 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
492 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
493 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
494 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
495 | } |
496 | ||
b2499518 | 497 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
498 | /* Adjust production date as per JEDEC JESD84-B451 */ |
499 | if (card->cid.year < 2010) | |
500 | card->cid.year += 16; | |
501 | ||
950d56ac JC |
502 | /* check whether the eMMC card supports BKOPS */ |
503 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
504 | card->ext_csd.bkops = 1; | |
0501be64 AS |
505 | card->ext_csd.man_bkops_en = |
506 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
507 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
508 | card->ext_csd.raw_bkops_status = |
509 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 | 510 | if (!card->ext_csd.man_bkops_en) |
4ec96b4c | 511 | pr_debug("%s: MAN_BKOPS_EN bit is not set\n", |
950d56ac JC |
512 | mmc_hostname(card->host)); |
513 | } | |
514 | ||
eb0d8f13 | 515 | /* check whether the eMMC card supports HPI */ |
81f8a7be | 516 | if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { |
eb0d8f13 JC |
517 | card->ext_csd.hpi = 1; |
518 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
519 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
520 | else | |
521 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
522 | /* | |
523 | * Indicate the maximum timeout to close | |
524 | * a command interrupted by HPI | |
525 | */ | |
526 | card->ext_csd.out_of_int_time = | |
527 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
528 | } | |
529 | ||
f4c5522b | 530 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 531 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
532 | |
533 | /* | |
534 | * RPMB regions are defined in multiples of 128K. | |
535 | */ | |
536 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 537 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
538 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
539 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
540 | "rpmb", 0, false, | |
541 | MMC_BLK_DATA_AREA_RPMB); | |
542 | } | |
b2499518 | 543 | } |
f4c5522b | 544 | |
5238acbe | 545 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
546 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
547 | card->erased_byte = 0xFF; | |
548 | else | |
549 | card->erased_byte = 0x0; | |
550 | ||
336c716a | 551 | /* eMMC v4.5 or later */ |
bec8726a | 552 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
553 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
554 | ||
b23cf0bd SJ |
555 | card->ext_csd.generic_cmd6_time = 10 * |
556 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
557 | card->ext_csd.power_off_longtime = 10 * |
558 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 559 | |
336c716a SJ |
560 | card->ext_csd.cache_size = |
561 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
562 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
563 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
564 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
565 | |
566 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
567 | card->ext_csd.data_sector_size = 4096; | |
568 | else | |
569 | card->ext_csd.data_sector_size = 512; | |
570 | ||
571 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
572 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
573 | card->ext_csd.data_tag_unit_size = | |
574 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
575 | (card->ext_csd.data_sector_size); | |
576 | } else { | |
577 | card->ext_csd.data_tag_unit_size = 0; | |
578 | } | |
abd9ac14 SJ |
579 | |
580 | card->ext_csd.max_packed_writes = | |
581 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
582 | card->ext_csd.max_packed_reads = | |
583 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
584 | } else { |
585 | card->ext_csd.data_sector_size = 512; | |
336c716a | 586 | } |
881d1c25 | 587 | |
0f762426 GG |
588 | /* eMMC v5 or later */ |
589 | if (card->ext_csd.rev >= 7) { | |
590 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
591 | MMC_FIRMWARE_LEN); | |
592 | card->ext_csd.ffu_capable = | |
593 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
594 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
595 | } | |
7ea239d9 | 596 | out: |
08ee80cc PR |
597 | return err; |
598 | } | |
599 | ||
076ec38a UH |
600 | static int mmc_read_ext_csd(struct mmc_card *card) |
601 | { | |
c197787c | 602 | u8 *ext_csd; |
076ec38a UH |
603 | int err; |
604 | ||
c197787c UH |
605 | if (!mmc_can_ext_csd(card)) |
606 | return 0; | |
607 | ||
076ec38a | 608 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
609 | if (err) { |
610 | /* If the host or the card can't do the switch, | |
611 | * fail more gracefully. */ | |
612 | if ((err != -EINVAL) | |
613 | && (err != -ENOSYS) | |
614 | && (err != -EFAULT)) | |
615 | return err; | |
616 | ||
617 | /* | |
618 | * High capacity cards should have this "magic" size | |
619 | * stored in their CSD. | |
620 | */ | |
621 | if (card->csd.capacity == (4096 * 512)) { | |
622 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
623 | mmc_hostname(card->host)); | |
624 | } else { | |
625 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
626 | mmc_hostname(card->host)); | |
627 | err = 0; | |
628 | } | |
629 | ||
076ec38a | 630 | return err; |
c197787c | 631 | } |
076ec38a UH |
632 | |
633 | err = mmc_decode_ext_csd(card, ext_csd); | |
634 | kfree(ext_csd); | |
635 | return err; | |
636 | } | |
637 | ||
f39b2dd9 | 638 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
639 | { |
640 | u8 *bw_ext_csd; | |
641 | int err; | |
642 | ||
f39b2dd9 PR |
643 | if (bus_width == MMC_BUS_WIDTH_1) |
644 | return 0; | |
645 | ||
08ee80cc | 646 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
647 | if (err) |
648 | return err; | |
08ee80cc | 649 | |
08ee80cc | 650 | /* only compare read only fields */ |
dd13b4ed | 651 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 652 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 653 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 654 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 655 | (card->ext_csd.rev == |
08ee80cc | 656 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 657 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 658 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 659 | (card->ext_csd.raw_card_type == |
08ee80cc | 660 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 661 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 662 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 663 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 664 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 665 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 666 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 667 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 668 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 669 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 670 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 671 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 672 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 673 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 674 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 675 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 676 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
677 | (card->ext_csd.raw_sectors[0] == |
678 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
679 | (card->ext_csd.raw_sectors[1] == | |
680 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
681 | (card->ext_csd.raw_sectors[2] == | |
682 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
683 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
684 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
685 | (card->ext_csd.raw_pwr_cl_52_195 == | |
686 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
687 | (card->ext_csd.raw_pwr_cl_26_195 == | |
688 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
689 | (card->ext_csd.raw_pwr_cl_52_360 == | |
690 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
691 | (card->ext_csd.raw_pwr_cl_26_360 == | |
692 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
693 | (card->ext_csd.raw_pwr_cl_200_195 == | |
694 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
695 | (card->ext_csd.raw_pwr_cl_200_360 == | |
696 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
697 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
698 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
699 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
700 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
701 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
702 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
703 | ||
08ee80cc PR |
704 | if (err) |
705 | err = -EINVAL; | |
706 | ||
00b41b58 | 707 | kfree(bw_ext_csd); |
7ea239d9 PO |
708 | return err; |
709 | } | |
710 | ||
51ec92e2 PO |
711 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
712 | card->raw_cid[2], card->raw_cid[3]); | |
713 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
714 | card->raw_csd[2], card->raw_csd[3]); | |
715 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
716 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
717 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 718 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
719 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
720 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
721 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
722 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 723 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 724 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
725 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
726 | card->ext_csd.enhanced_area_offset); | |
727 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
728 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
729 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 730 | |
0f762426 GG |
731 | static ssize_t mmc_fwrev_show(struct device *dev, |
732 | struct device_attribute *attr, | |
733 | char *buf) | |
734 | { | |
735 | struct mmc_card *card = mmc_dev_to_card(dev); | |
736 | ||
737 | if (card->ext_csd.rev < 7) { | |
738 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
739 | } else { | |
740 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
741 | card->ext_csd.fwrev); | |
742 | } | |
743 | } | |
744 | ||
745 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
746 | ||
51ec92e2 PO |
747 | static struct attribute *mmc_std_attrs[] = { |
748 | &dev_attr_cid.attr, | |
749 | &dev_attr_csd.attr, | |
750 | &dev_attr_date.attr, | |
dfe86cba AH |
751 | &dev_attr_erase_size.attr, |
752 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 753 | &dev_attr_fwrev.attr, |
0f762426 | 754 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
755 | &dev_attr_hwrev.attr, |
756 | &dev_attr_manfid.attr, | |
757 | &dev_attr_name.attr, | |
758 | &dev_attr_oemid.attr, | |
51e7e8b6 | 759 | &dev_attr_prv.attr, |
51ec92e2 | 760 | &dev_attr_serial.attr, |
709de99d CD |
761 | &dev_attr_enhanced_area_offset.attr, |
762 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
763 | &dev_attr_raw_rpmb_size_mult.attr, |
764 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
765 | NULL, |
766 | }; | |
d1e58212 | 767 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
768 | |
769 | static struct device_type mmc_type = { | |
d1e58212 | 770 | .groups = mmc_std_groups, |
51ec92e2 PO |
771 | }; |
772 | ||
b87d8dbf G |
773 | /* |
774 | * Select the PowerClass for the current bus width | |
775 | * If power class is defined for 4/8 bit bus in the | |
776 | * extended CSD register, select it by executing the | |
777 | * mmc_switch command. | |
778 | */ | |
2385049d SJ |
779 | static int __mmc_select_powerclass(struct mmc_card *card, |
780 | unsigned int bus_width) | |
b87d8dbf | 781 | { |
2385049d SJ |
782 | struct mmc_host *host = card->host; |
783 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 784 | unsigned int pwrclass_val = 0; |
2385049d | 785 | int err = 0; |
b87d8dbf | 786 | |
b87d8dbf G |
787 | switch (1 << host->ios.vdd) { |
788 | case MMC_VDD_165_195: | |
2385049d SJ |
789 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
790 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
791 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 792 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
793 | ext_csd->raw_pwr_cl_52_195 : |
794 | ext_csd->raw_pwr_cl_ddr_52_195; | |
795 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
796 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 797 | break; |
93fc5a47 SJ |
798 | case MMC_VDD_27_28: |
799 | case MMC_VDD_28_29: | |
800 | case MMC_VDD_29_30: | |
801 | case MMC_VDD_30_31: | |
802 | case MMC_VDD_31_32: | |
b87d8dbf G |
803 | case MMC_VDD_32_33: |
804 | case MMC_VDD_33_34: | |
805 | case MMC_VDD_34_35: | |
806 | case MMC_VDD_35_36: | |
2385049d SJ |
807 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
808 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
809 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 810 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
811 | ext_csd->raw_pwr_cl_52_360 : |
812 | ext_csd->raw_pwr_cl_ddr_52_360; | |
813 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
814 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
815 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
816 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
817 | break; |
818 | default: | |
6606110d JP |
819 | pr_warn("%s: Voltage range not supported for power class\n", |
820 | mmc_hostname(host)); | |
b87d8dbf G |
821 | return -EINVAL; |
822 | } | |
823 | ||
b87d8dbf G |
824 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
825 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
826 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
827 | else | |
828 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
829 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
830 | ||
831 | /* If the power class is different from the default value */ | |
832 | if (pwrclass_val > 0) { | |
833 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
834 | EXT_CSD_POWER_CLASS, | |
835 | pwrclass_val, | |
71fe3eb0 | 836 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
837 | } |
838 | ||
839 | return err; | |
840 | } | |
841 | ||
2385049d SJ |
842 | static int mmc_select_powerclass(struct mmc_card *card) |
843 | { | |
844 | struct mmc_host *host = card->host; | |
845 | u32 bus_width, ext_csd_bits; | |
846 | int err, ddr; | |
847 | ||
848 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 849 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
850 | return 0; |
851 | ||
852 | bus_width = host->ios.bus_width; | |
853 | /* Power class values are defined only for 4/8 bit bus */ | |
854 | if (bus_width == MMC_BUS_WIDTH_1) | |
855 | return 0; | |
856 | ||
857 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
858 | if (ddr) | |
859 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
860 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
861 | else | |
862 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
863 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
864 | ||
865 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
866 | if (err) | |
867 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
868 | mmc_hostname(host), 1 << bus_width, ddr); | |
869 | ||
870 | return err; | |
871 | } | |
872 | ||
a4924c71 | 873 | /* |
577fb131 | 874 | * Set the bus speed for the selected speed mode. |
a4924c71 | 875 | */ |
577fb131 SJ |
876 | static void mmc_set_bus_speed(struct mmc_card *card) |
877 | { | |
878 | unsigned int max_dtr = (unsigned int)-1; | |
879 | ||
0a5b6438 SJ |
880 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
881 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
882 | max_dtr = card->ext_csd.hs200_max_dtr; |
883 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
884 | max_dtr = card->ext_csd.hs_max_dtr; | |
885 | else if (max_dtr > card->csd.max_dtr) | |
886 | max_dtr = card->csd.max_dtr; | |
887 | ||
888 | mmc_set_clock(card->host, max_dtr); | |
889 | } | |
890 | ||
891 | /* | |
892 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
893 | * If the bus width is changed successfully, return the selected width value. | |
894 | * Zero is returned instead of error value if the wide width is not supported. | |
895 | */ | |
896 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 897 | { |
a4924c71 | 898 | static unsigned ext_csd_bits[] = { |
a4924c71 | 899 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 900 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
901 | }; |
902 | static unsigned bus_widths[] = { | |
a4924c71 | 903 | MMC_BUS_WIDTH_8, |
577fb131 | 904 | MMC_BUS_WIDTH_4, |
a4924c71 | 905 | }; |
577fb131 SJ |
906 | struct mmc_host *host = card->host; |
907 | unsigned idx, bus_width = 0; | |
908 | int err = 0; | |
a4924c71 | 909 | |
1c2d26e3 | 910 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
911 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
912 | return 0; | |
a4924c71 | 913 | |
577fb131 | 914 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
915 | |
916 | /* | |
917 | * Unlike SD, MMC cards dont have a configuration register to notify | |
918 | * supported bus width. So bus test command should be run to identify | |
919 | * the supported bus width or compare the ext csd values of current | |
920 | * bus width and ext csd values of 1 bit mode read earlier. | |
921 | */ | |
577fb131 | 922 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
923 | /* |
924 | * Host is capable of 8bit transfer, then switch | |
925 | * the device to work in 8bit transfer mode. If the | |
926 | * mmc switch command returns error then switch to | |
927 | * 4bit transfer mode. On success set the corresponding | |
928 | * bus width on the host. | |
929 | */ | |
930 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
931 | EXT_CSD_BUS_WIDTH, | |
932 | ext_csd_bits[idx], | |
933 | card->ext_csd.generic_cmd6_time); | |
934 | if (err) | |
935 | continue; | |
936 | ||
577fb131 SJ |
937 | bus_width = bus_widths[idx]; |
938 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 939 | |
577fb131 SJ |
940 | /* |
941 | * If controller can't handle bus width test, | |
942 | * compare ext_csd previously read in 1 bit mode | |
943 | * against ext_csd at new bus width | |
944 | */ | |
a4924c71 | 945 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 946 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 947 | else |
577fb131 SJ |
948 | err = mmc_bus_test(card, bus_width); |
949 | ||
950 | if (!err) { | |
951 | err = bus_width; | |
a4924c71 | 952 | break; |
577fb131 SJ |
953 | } else { |
954 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 955 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 956 | } |
a4924c71 G |
957 | } |
958 | ||
577fb131 SJ |
959 | return err; |
960 | } | |
961 | ||
962 | /* | |
963 | * Switch to the high-speed mode | |
964 | */ | |
965 | static int mmc_select_hs(struct mmc_card *card) | |
966 | { | |
967 | int err; | |
968 | ||
969 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
970 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
971 | card->ext_csd.generic_cmd6_time, | |
972 | true, true, true); | |
a4924c71 | 973 | if (!err) |
577fb131 SJ |
974 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
975 | ||
976 | return err; | |
977 | } | |
978 | ||
979 | /* | |
980 | * Activate wide bus and DDR if supported. | |
981 | */ | |
982 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
983 | { | |
984 | struct mmc_host *host = card->host; | |
985 | u32 bus_width, ext_csd_bits; | |
986 | int err = 0; | |
987 | ||
988 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
989 | return 0; | |
990 | ||
991 | bus_width = host->ios.bus_width; | |
992 | if (bus_width == MMC_BUS_WIDTH_1) | |
993 | return 0; | |
994 | ||
995 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
996 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
997 | ||
998 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
999 | EXT_CSD_BUS_WIDTH, | |
1000 | ext_csd_bits, | |
1001 | card->ext_csd.generic_cmd6_time); | |
1002 | if (err) { | |
4b75bffc | 1003 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1004 | mmc_hostname(host), 1 << bus_width); |
1005 | return err; | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1010 | * signaling. | |
1011 | * | |
1012 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1013 | * | |
1014 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1015 | * in the JEDEC spec for DDR. | |
1016 | * | |
312449ef CD |
1017 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1018 | * host controller can support this, like some of the SDHCI | |
1019 | * controller which connect to an eMMC device. Some of these | |
1020 | * host controller still needs to use 1.8v vccq for supporting | |
1021 | * DDR mode. | |
1022 | * | |
1023 | * So the sequence will be: | |
1024 | * if (host and device can both support 1.2v IO) | |
1025 | * use 1.2v IO; | |
1026 | * else if (host and device can both support 1.8v IO) | |
1027 | * use 1.8v IO; | |
1028 | * so if host and device can only support 3.3v IO, this is the | |
1029 | * last choice. | |
577fb131 SJ |
1030 | * |
1031 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1032 | */ | |
312449ef CD |
1033 | err = -EINVAL; |
1034 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1035 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1036 | |
312449ef CD |
1037 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1038 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1039 | ||
1040 | /* make sure vccq is 3.3v after switching disaster */ | |
1041 | if (err) | |
1042 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1043 | ||
1044 | if (!err) | |
1045 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1046 | |
1047 | return err; | |
1048 | } | |
1049 | ||
974007aa AH |
1050 | /* Caller must hold re-tuning */ |
1051 | static int mmc_switch_status(struct mmc_card *card) | |
1052 | { | |
1053 | u32 status; | |
1054 | int err; | |
1055 | ||
1056 | err = mmc_send_status(card, &status); | |
1057 | if (err) | |
1058 | return err; | |
1059 | ||
1060 | return mmc_switch_status_error(card->host, status); | |
1061 | } | |
1062 | ||
0a5b6438 SJ |
1063 | static int mmc_select_hs400(struct mmc_card *card) |
1064 | { | |
1065 | struct mmc_host *host = card->host; | |
d2302933 | 1066 | bool send_status = true; |
51b12f77 | 1067 | unsigned int max_dtr; |
0a5b6438 | 1068 | int err = 0; |
cc4f414c | 1069 | u8 val; |
0a5b6438 SJ |
1070 | |
1071 | /* | |
1072 | * HS400 mode requires 8-bit bus width | |
1073 | */ | |
1074 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1075 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1076 | return 0; | |
1077 | ||
d2302933 AH |
1078 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) |
1079 | send_status = false; | |
1080 | ||
51b12f77 AH |
1081 | /* Reduce frequency to HS frequency */ |
1082 | max_dtr = card->ext_csd.hs_max_dtr; | |
1083 | mmc_set_clock(host, max_dtr); | |
0a5b6438 | 1084 | |
51b12f77 | 1085 | /* Switch card to HS mode */ |
adb24d42 | 1086 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1087 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1088 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1089 | card->ext_csd.generic_cmd6_time, |
d2302933 | 1090 | true, send_status, true); |
0a5b6438 | 1091 | if (err) { |
4b75bffc | 1092 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1093 | mmc_hostname(host), err); |
1094 | return err; | |
1095 | } | |
1096 | ||
51b12f77 AH |
1097 | /* Set host controller to HS timing */ |
1098 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1099 | ||
d2302933 AH |
1100 | if (!send_status) { |
1101 | err = mmc_switch_status(card); | |
1102 | if (err) | |
1103 | goto out_err; | |
1104 | } | |
1105 | ||
1106 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1107 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1108 | EXT_CSD_BUS_WIDTH, | |
1109 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1110 | card->ext_csd.generic_cmd6_time); | |
1111 | if (err) { | |
4b75bffc | 1112 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1113 | mmc_hostname(host), err); |
1114 | return err; | |
1115 | } | |
1116 | ||
d2302933 | 1117 | /* Switch card to HS400 */ |
cc4f414c AH |
1118 | val = EXT_CSD_TIMING_HS400 | |
1119 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1120 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1121 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1122 | card->ext_csd.generic_cmd6_time, |
d2302933 | 1123 | true, send_status, true); |
0a5b6438 | 1124 | if (err) { |
4b75bffc | 1125 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1126 | mmc_hostname(host), err); |
1127 | return err; | |
1128 | } | |
1129 | ||
d2302933 | 1130 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1131 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1132 | mmc_set_bus_speed(card); | |
1133 | ||
d2302933 AH |
1134 | if (!send_status) { |
1135 | err = mmc_switch_status(card); | |
1136 | if (err) | |
1137 | goto out_err; | |
1138 | } | |
1139 | ||
0a5b6438 | 1140 | return 0; |
d2302933 AH |
1141 | |
1142 | out_err: | |
1143 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1144 | __func__, err); | |
1145 | return err; | |
0a5b6438 SJ |
1146 | } |
1147 | ||
6376f69d AH |
1148 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1149 | { | |
1150 | return mmc_select_hs400(card); | |
1151 | } | |
1152 | ||
6376f69d AH |
1153 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1154 | { | |
1155 | struct mmc_host *host = card->host; | |
1156 | bool send_status = true; | |
1157 | unsigned int max_dtr; | |
1158 | int err; | |
cc4f414c | 1159 | u8 val; |
6376f69d AH |
1160 | |
1161 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) | |
1162 | send_status = false; | |
1163 | ||
1164 | /* Reduce frequency to HS */ | |
1165 | max_dtr = card->ext_csd.hs_max_dtr; | |
1166 | mmc_set_clock(host, max_dtr); | |
1167 | ||
1168 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1169 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1170 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c | 1171 | val, card->ext_csd.generic_cmd6_time, |
6376f69d AH |
1172 | true, send_status, true); |
1173 | if (err) | |
1174 | goto out_err; | |
1175 | ||
1176 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1177 | ||
1178 | if (!send_status) { | |
1179 | err = mmc_switch_status(card); | |
1180 | if (err) | |
1181 | goto out_err; | |
1182 | } | |
1183 | ||
1184 | /* Switch HS DDR to HS */ | |
1185 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1186 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
1187 | true, send_status, true); | |
1188 | if (err) | |
1189 | goto out_err; | |
1190 | ||
1191 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1192 | ||
1193 | if (!send_status) { | |
1194 | err = mmc_switch_status(card); | |
1195 | if (err) | |
1196 | goto out_err; | |
1197 | } | |
1198 | ||
1199 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1200 | val = EXT_CSD_TIMING_HS200 | |
1201 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1202 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c AH |
1203 | val, card->ext_csd.generic_cmd6_time, true, |
1204 | send_status, true); | |
6376f69d AH |
1205 | if (err) |
1206 | goto out_err; | |
1207 | ||
1208 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1209 | ||
1210 | if (!send_status) { | |
1211 | err = mmc_switch_status(card); | |
1212 | if (err) | |
1213 | goto out_err; | |
1214 | } | |
1215 | ||
1216 | mmc_set_bus_speed(card); | |
1217 | ||
1218 | return 0; | |
1219 | ||
1220 | out_err: | |
1221 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1222 | __func__, err); | |
1223 | return err; | |
1224 | } | |
1225 | ||
cc4f414c AH |
1226 | static void mmc_select_driver_type(struct mmc_card *card) |
1227 | { | |
1228 | int card_drv_type, drive_strength, drv_type; | |
1229 | ||
1230 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1231 | mmc_driver_type_mask(0); | |
1232 | ||
1233 | drive_strength = mmc_select_drive_strength(card, | |
1234 | card->ext_csd.hs200_max_dtr, | |
1235 | card_drv_type, &drv_type); | |
1236 | ||
1237 | card->drive_strength = drive_strength; | |
1238 | ||
1239 | if (drv_type) | |
1240 | mmc_set_driver_type(card->host, drv_type); | |
1241 | } | |
1242 | ||
577fb131 SJ |
1243 | /* |
1244 | * For device supporting HS200 mode, the following sequence | |
1245 | * should be done before executing the tuning process. | |
1246 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1247 | * 2. switch to HS200 mode | |
1248 | * 3. set the clock to > 52Mhz and <=200MHz | |
1249 | */ | |
1250 | static int mmc_select_hs200(struct mmc_card *card) | |
1251 | { | |
1252 | struct mmc_host *host = card->host; | |
1815e61b | 1253 | bool send_status = true; |
e51534c8 | 1254 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1255 | int err = -EINVAL; |
cc4f414c | 1256 | u8 val; |
577fb131 | 1257 | |
e51534c8 | 1258 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 SJ |
1259 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
1260 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1261 | ||
1262 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1263 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1264 | ||
1265 | /* If fails try again during next card power cycle */ | |
1266 | if (err) | |
e51534c8 | 1267 | return err; |
577fb131 | 1268 | |
cc4f414c AH |
1269 | mmc_select_driver_type(card); |
1270 | ||
1815e61b AH |
1271 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) |
1272 | send_status = false; | |
1273 | ||
577fb131 SJ |
1274 | /* |
1275 | * Set the bus width(4 or 8) with host's support and | |
1276 | * switch to HS200 mode if bus width is set successfully. | |
1277 | */ | |
1278 | err = mmc_select_bus_width(card); | |
1279 | if (!IS_ERR_VALUE(err)) { | |
cc4f414c AH |
1280 | val = EXT_CSD_TIMING_HS200 | |
1281 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1282 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1283 | EXT_CSD_HS_TIMING, val, |
577fb131 | 1284 | card->ext_csd.generic_cmd6_time, |
1815e61b AH |
1285 | true, send_status, true); |
1286 | if (err) | |
1287 | goto err; | |
1288 | old_timing = host->ios.timing; | |
1289 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1290 | if (!send_status) { | |
1291 | err = mmc_switch_status(card); | |
1292 | /* | |
1293 | * mmc_select_timing() assumes timing has not changed if | |
1294 | * it is a switch error. | |
1295 | */ | |
1296 | if (err == -EBADMSG) | |
1297 | mmc_set_timing(host, old_timing); | |
1298 | } | |
577fb131 | 1299 | } |
a4924c71 | 1300 | err: |
e51534c8 DA |
1301 | if (err) { |
1302 | /* fall back to the old signal voltage, if fails report error */ | |
1303 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) | |
1304 | err = -EIO; | |
1305 | ||
1815e61b AH |
1306 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1307 | __func__, err); | |
e51534c8 | 1308 | } |
a4924c71 G |
1309 | return err; |
1310 | } | |
1311 | ||
577fb131 SJ |
1312 | /* |
1313 | * Activate High Speed or HS200 mode if supported. | |
1314 | */ | |
1315 | static int mmc_select_timing(struct mmc_card *card) | |
1316 | { | |
1317 | int err = 0; | |
1318 | ||
148bcab2 | 1319 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1320 | goto bus_speed; |
1321 | ||
1322 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1323 | err = mmc_select_hs200(card); | |
1324 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1325 | err = mmc_select_hs(card); | |
1326 | ||
1327 | if (err && err != -EBADMSG) | |
1328 | return err; | |
1329 | ||
577fb131 SJ |
1330 | bus_speed: |
1331 | /* | |
1332 | * Set the bus speed to the selected bus timing. | |
1333 | * If timing is not selected, backward compatible is the default. | |
1334 | */ | |
1335 | mmc_set_bus_speed(card); | |
0400ed0a | 1336 | return 0; |
577fb131 SJ |
1337 | } |
1338 | ||
1339 | /* | |
1340 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1341 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1342 | */ |
1343 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1344 | { | |
1345 | struct mmc_host *host = card->host; | |
577fb131 | 1346 | |
0a5b6438 SJ |
1347 | /* |
1348 | * Timing should be adjusted to the HS400 target | |
1349 | * operation frequency for tuning process | |
1350 | */ | |
1351 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1352 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1353 | if (host->ops->prepare_hs400_tuning) | |
1354 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1355 | ||
63e415c6 | 1356 | return mmc_execute_tuning(card); |
577fb131 SJ |
1357 | } |
1358 | ||
7ea239d9 | 1359 | /* |
6abaa0c9 PO |
1360 | * Handle the detection and initialisation of a card. |
1361 | * | |
8769392b | 1362 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1363 | * we're trying to reinitialise. |
7ea239d9 | 1364 | */ |
8c75deae | 1365 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1366 | struct mmc_card *oldcard) |
7ea239d9 PO |
1367 | { |
1368 | struct mmc_card *card; | |
577fb131 | 1369 | int err; |
7ea239d9 | 1370 | u32 cid[4]; |
b676f039 | 1371 | u32 rocr; |
7ea239d9 PO |
1372 | |
1373 | BUG_ON(!host); | |
d84075c8 | 1374 | WARN_ON(!host->claimed); |
7ea239d9 | 1375 | |
44669034 SNX |
1376 | /* Set correct bus mode for MMC before attempting init */ |
1377 | if (!mmc_host_is_spi(host)) | |
1378 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1379 | ||
7ea239d9 PO |
1380 | /* |
1381 | * Since we're changing the OCR value, we seem to | |
1382 | * need to tell some cards to go back to the idle | |
1383 | * state. We wait 1ms to give cards time to | |
1384 | * respond. | |
c3805467 | 1385 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1386 | */ |
1387 | mmc_go_idle(host); | |
1388 | ||
1389 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1390 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1391 | if (err) |
6abaa0c9 | 1392 | goto err; |
7ea239d9 | 1393 | |
af517150 DB |
1394 | /* |
1395 | * For SPI, enable CRC as appropriate. | |
1396 | */ | |
1397 | if (mmc_host_is_spi(host)) { | |
1398 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1399 | if (err) | |
1400 | goto err; | |
1401 | } | |
1402 | ||
7ea239d9 PO |
1403 | /* |
1404 | * Fetch CID from card. | |
1405 | */ | |
af517150 DB |
1406 | if (mmc_host_is_spi(host)) |
1407 | err = mmc_send_cid(host, cid); | |
1408 | else | |
1409 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1410 | if (err) |
7ea239d9 PO |
1411 | goto err; |
1412 | ||
6abaa0c9 | 1413 | if (oldcard) { |
adf66a0d PO |
1414 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1415 | err = -ENOENT; | |
6abaa0c9 | 1416 | goto err; |
adf66a0d | 1417 | } |
6abaa0c9 PO |
1418 | |
1419 | card = oldcard; | |
1420 | } else { | |
1421 | /* | |
1422 | * Allocate card structure. | |
1423 | */ | |
51ec92e2 | 1424 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1425 | if (IS_ERR(card)) { |
1426 | err = PTR_ERR(card); | |
6abaa0c9 | 1427 | goto err; |
adf66a0d | 1428 | } |
7ea239d9 | 1429 | |
69041150 | 1430 | card->ocr = ocr; |
6abaa0c9 PO |
1431 | card->type = MMC_TYPE_MMC; |
1432 | card->rca = 1; | |
1433 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1434 | } | |
7ea239d9 | 1435 | |
eac86321 DA |
1436 | /* |
1437 | * Call the optional HC's init_card function to handle quirks. | |
1438 | */ | |
1439 | if (host->ops->init_card) | |
1440 | host->ops->init_card(host, card); | |
1441 | ||
7ea239d9 | 1442 | /* |
af517150 | 1443 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1444 | */ |
af517150 DB |
1445 | if (!mmc_host_is_spi(host)) { |
1446 | err = mmc_set_relative_addr(card); | |
1447 | if (err) | |
1448 | goto free_card; | |
7ea239d9 | 1449 | |
af517150 DB |
1450 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1451 | } | |
7ea239d9 | 1452 | |
6abaa0c9 PO |
1453 | if (!oldcard) { |
1454 | /* | |
1455 | * Fetch CSD from card. | |
1456 | */ | |
1457 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1458 | if (err) |
6abaa0c9 | 1459 | goto free_card; |
7ea239d9 | 1460 | |
bd766312 | 1461 | err = mmc_decode_csd(card); |
adf66a0d | 1462 | if (err) |
bd766312 PO |
1463 | goto free_card; |
1464 | err = mmc_decode_cid(card); | |
adf66a0d | 1465 | if (err) |
bd766312 | 1466 | goto free_card; |
6abaa0c9 | 1467 | } |
7ea239d9 | 1468 | |
3d705d14 SH |
1469 | /* |
1470 | * handling only for cards supporting DSR and hosts requesting | |
1471 | * DSR configuration | |
1472 | */ | |
1473 | if (card->csd.dsr_imp && host->dsr_req) | |
1474 | mmc_set_dsr(host); | |
1475 | ||
7ea239d9 | 1476 | /* |
89a73cf5 | 1477 | * Select card, as all following commands rely on that. |
7ea239d9 | 1478 | */ |
af517150 DB |
1479 | if (!mmc_host_is_spi(host)) { |
1480 | err = mmc_select_card(card); | |
1481 | if (err) | |
1482 | goto free_card; | |
1483 | } | |
7ea239d9 | 1484 | |
6abaa0c9 | 1485 | if (!oldcard) { |
076ec38a UH |
1486 | /* Read extended CSD. */ |
1487 | err = mmc_read_ext_csd(card); | |
17b0429d | 1488 | if (err) |
6abaa0c9 | 1489 | goto free_card; |
b676f039 | 1490 | |
87e88659 MY |
1491 | /* |
1492 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1493 | * addressing. Handle the case of <2GB cards needing sector |
1494 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1495 | * ocr register has bit 30 set for sector addressing. | |
1496 | */ | |
87e88659 | 1497 | if (rocr & BIT(30)) |
b676f039 PR |
1498 | mmc_card_set_blockaddr(card); |
1499 | ||
dfe86cba AH |
1500 | /* Erase size depends on CSD and Extended CSD */ |
1501 | mmc_set_erase_size(card); | |
6abaa0c9 | 1502 | } |
7ea239d9 | 1503 | |
709de99d CD |
1504 | /* |
1505 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1506 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1507 | */ |
69803d4f | 1508 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1509 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1510 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1511 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1512 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1513 | |
1514 | if (err && err != -EBADMSG) | |
1515 | goto free_card; | |
1516 | ||
1517 | if (err) { | |
1518 | err = 0; | |
1519 | /* | |
1520 | * Just disable enhanced area off & sz | |
1521 | * will try to enable ERASE_GROUP_DEF | |
1522 | * during next time reinit | |
1523 | */ | |
1524 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1525 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1526 | } else { | |
1527 | card->ext_csd.erase_group_def = 1; | |
1528 | /* | |
1529 | * enable ERASE_GRP_DEF successfully. | |
1530 | * This will affect the erase size, so | |
1531 | * here need to reset erase size | |
1532 | */ | |
1533 | mmc_set_erase_size(card); | |
1534 | } | |
1535 | } | |
1536 | ||
41e2a489 PR |
1537 | /* |
1538 | * Ensure eMMC user default partition is enabled | |
1539 | */ | |
371a689f AW |
1540 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1541 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1542 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1543 | card->ext_csd.part_config, | |
1544 | card->ext_csd.part_time); | |
1545 | if (err && err != -EBADMSG) | |
1546 | goto free_card; | |
41e2a489 PR |
1547 | } |
1548 | ||
bec8726a | 1549 | /* |
43235679 | 1550 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1551 | */ |
43235679 | 1552 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1553 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1554 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1555 | EXT_CSD_POWER_ON, | |
1556 | card->ext_csd.generic_cmd6_time); | |
1557 | if (err && err != -EBADMSG) | |
1558 | goto free_card; | |
bec8726a | 1559 | |
96a85d54 G |
1560 | /* |
1561 | * The err can be -EBADMSG or 0, | |
1562 | * so check for success and update the flag | |
1563 | */ | |
1564 | if (!err) | |
e6c08586 | 1565 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1566 | } |
bec8726a | 1567 | |
89a73cf5 | 1568 | /* |
577fb131 | 1569 | * Select timing interface |
dfc13e84 | 1570 | */ |
577fb131 SJ |
1571 | err = mmc_select_timing(card); |
1572 | if (err) | |
1573 | goto free_card; | |
dfc13e84 | 1574 | |
a4924c71 | 1575 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1576 | err = mmc_hs200_tuning(card); |
1577 | if (err) | |
4b75bffc | 1578 | goto free_card; |
0a5b6438 SJ |
1579 | |
1580 | err = mmc_select_hs400(card); | |
1581 | if (err) | |
4b75bffc | 1582 | goto free_card; |
577fb131 SJ |
1583 | } else if (mmc_card_hs(card)) { |
1584 | /* Select the desired bus width optionally */ | |
1585 | err = mmc_select_bus_width(card); | |
1586 | if (!IS_ERR_VALUE(err)) { | |
1587 | err = mmc_select_hs_ddr(card); | |
1588 | if (err) | |
4b75bffc | 1589 | goto free_card; |
ef0b27d4 | 1590 | } |
89a73cf5 PO |
1591 | } |
1592 | ||
2385049d SJ |
1593 | /* |
1594 | * Choose the power class with selected bus interface | |
1595 | */ | |
1596 | mmc_select_powerclass(card); | |
1597 | ||
52d0974e SJ |
1598 | /* |
1599 | * Enable HPI feature (if supported) | |
1600 | */ | |
1601 | if (card->ext_csd.hpi) { | |
1602 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1603 | EXT_CSD_HPI_MGMT, 1, | |
1604 | card->ext_csd.generic_cmd6_time); | |
1605 | if (err && err != -EBADMSG) | |
1606 | goto free_card; | |
1607 | if (err) { | |
6606110d JP |
1608 | pr_warn("%s: Enabling HPI failed\n", |
1609 | mmc_hostname(card->host)); | |
52d0974e SJ |
1610 | err = 0; |
1611 | } else | |
1612 | card->ext_csd.hpi_en = 1; | |
1613 | } | |
1614 | ||
881d1c25 SJ |
1615 | /* |
1616 | * If cache size is higher than 0, this indicates | |
1617 | * the existence of cache and it can be turned on. | |
1618 | */ | |
7536d3f8 | 1619 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1620 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1621 | EXT_CSD_CACHE_CTRL, 1, |
1622 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1623 | if (err && err != -EBADMSG) |
1624 | goto free_card; | |
1625 | ||
1626 | /* | |
1627 | * Only if no error, cache is turned on successfully. | |
1628 | */ | |
8bc0678b | 1629 | if (err) { |
6606110d JP |
1630 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1631 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1632 | card->ext_csd.cache_ctrl = 0; |
1633 | err = 0; | |
1634 | } else { | |
1635 | card->ext_csd.cache_ctrl = 1; | |
1636 | } | |
881d1c25 SJ |
1637 | } |
1638 | ||
abd9ac14 SJ |
1639 | /* |
1640 | * The mandatory minimum values are defined for packed command. | |
1641 | * read: 5, write: 3 | |
1642 | */ | |
1643 | if (card->ext_csd.max_packed_writes >= 3 && | |
1644 | card->ext_csd.max_packed_reads >= 5 && | |
1645 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1646 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1647 | EXT_CSD_EXP_EVENTS_CTRL, | |
1648 | EXT_CSD_PACKED_EVENT_EN, | |
1649 | card->ext_csd.generic_cmd6_time); | |
1650 | if (err && err != -EBADMSG) | |
1651 | goto free_card; | |
1652 | if (err) { | |
1653 | pr_warn("%s: Enabling packed event failed\n", | |
1654 | mmc_hostname(card->host)); | |
1655 | card->ext_csd.packed_event_en = 0; | |
1656 | err = 0; | |
1657 | } else { | |
1658 | card->ext_csd.packed_event_en = 1; | |
1659 | } | |
1660 | } | |
1661 | ||
6abaa0c9 PO |
1662 | if (!oldcard) |
1663 | host->card = card; | |
1664 | ||
17b0429d | 1665 | return 0; |
6abaa0c9 PO |
1666 | |
1667 | free_card: | |
1668 | if (!oldcard) | |
1669 | mmc_remove_card(card); | |
1670 | err: | |
adf66a0d | 1671 | return err; |
6abaa0c9 PO |
1672 | } |
1673 | ||
07a68216 UH |
1674 | static int mmc_can_sleep(struct mmc_card *card) |
1675 | { | |
1676 | return (card && card->ext_csd.rev >= 3); | |
1677 | } | |
1678 | ||
1679 | static int mmc_sleep(struct mmc_host *host) | |
1680 | { | |
1681 | struct mmc_command cmd = {0}; | |
1682 | struct mmc_card *card = host->card; | |
cb962e04 | 1683 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1684 | int err; |
1685 | ||
436f8daa AH |
1686 | /* Re-tuning can't be done once the card is deselected */ |
1687 | mmc_retune_hold(host); | |
1688 | ||
07a68216 UH |
1689 | err = mmc_deselect_cards(host); |
1690 | if (err) | |
436f8daa | 1691 | goto out_release; |
07a68216 UH |
1692 | |
1693 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1694 | cmd.arg = card->rca << 16; | |
1695 | cmd.arg |= 1 << 15; | |
1696 | ||
cb962e04 UH |
1697 | /* |
1698 | * If the max_busy_timeout of the host is specified, validate it against | |
1699 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1700 | * from doing hw busy detection, which is done by converting to a R1 | |
1701 | * response instead of a R1B. | |
1702 | */ | |
1703 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1704 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1705 | } else { | |
1706 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1707 | cmd.busy_timeout = timeout_ms; | |
1708 | } | |
1709 | ||
07a68216 UH |
1710 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1711 | if (err) | |
436f8daa | 1712 | goto out_release; |
07a68216 UH |
1713 | |
1714 | /* | |
1715 | * If the host does not wait while the card signals busy, then we will | |
1716 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1717 | * SEND_STATUS command to poll the status because that command (and most | |
1718 | * others) is invalid while the card sleeps. | |
1719 | */ | |
cb962e04 UH |
1720 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1721 | mmc_delay(timeout_ms); | |
07a68216 | 1722 | |
436f8daa AH |
1723 | out_release: |
1724 | mmc_retune_release(host); | |
07a68216 UH |
1725 | return err; |
1726 | } | |
1727 | ||
e6c08586 UH |
1728 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1729 | { | |
1730 | return card && | |
1731 | mmc_card_mmc(card) && | |
1732 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1733 | } | |
1734 | ||
1735 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1736 | { | |
1737 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1738 | int err; | |
1739 | ||
1740 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1741 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1742 | timeout = card->ext_csd.power_off_longtime; | |
1743 | ||
878e200b UH |
1744 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1745 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1746 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1747 | if (err) |
1748 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1749 | mmc_hostname(card->host), timeout); | |
1750 | ||
1751 | /* Disable the power off notification after the switch operation. */ | |
1752 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1753 | ||
1754 | return err; | |
1755 | } | |
1756 | ||
6abaa0c9 PO |
1757 | /* |
1758 | * Host is being removed. Free up the current card. | |
1759 | */ | |
1760 | static void mmc_remove(struct mmc_host *host) | |
1761 | { | |
1762 | BUG_ON(!host); | |
1763 | BUG_ON(!host->card); | |
1764 | ||
1765 | mmc_remove_card(host->card); | |
1766 | host->card = NULL; | |
1767 | } | |
1768 | ||
d3049504 AH |
1769 | /* |
1770 | * Card detection - card is alive. | |
1771 | */ | |
1772 | static int mmc_alive(struct mmc_host *host) | |
1773 | { | |
1774 | return mmc_send_status(host->card, NULL); | |
1775 | } | |
1776 | ||
6abaa0c9 PO |
1777 | /* |
1778 | * Card detection callback from host. | |
1779 | */ | |
1780 | static void mmc_detect(struct mmc_host *host) | |
1781 | { | |
1782 | int err; | |
1783 | ||
1784 | BUG_ON(!host); | |
1785 | BUG_ON(!host->card); | |
1786 | ||
e94cfef6 | 1787 | mmc_get_card(host->card); |
6abaa0c9 PO |
1788 | |
1789 | /* | |
1790 | * Just check if our card has been removed. | |
1791 | */ | |
d3049504 | 1792 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1793 | |
e94cfef6 | 1794 | mmc_put_card(host->card); |
6abaa0c9 | 1795 | |
17b0429d | 1796 | if (err) { |
4101c16a | 1797 | mmc_remove(host); |
6abaa0c9 PO |
1798 | |
1799 | mmc_claim_host(host); | |
1800 | mmc_detach_bus(host); | |
7f7e4129 | 1801 | mmc_power_off(host); |
6abaa0c9 PO |
1802 | mmc_release_host(host); |
1803 | } | |
1804 | } | |
1805 | ||
03d071fc | 1806 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1807 | { |
c3805467 | 1808 | int err = 0; |
03d071fc UH |
1809 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1810 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1811 | |
6abaa0c9 PO |
1812 | BUG_ON(!host); |
1813 | BUG_ON(!host->card); | |
7ea239d9 | 1814 | |
6abaa0c9 | 1815 | mmc_claim_host(host); |
881d926d | 1816 | |
9ec775f7 UH |
1817 | if (mmc_card_suspended(host->card)) |
1818 | goto out; | |
1819 | ||
39b9431b UH |
1820 | if (mmc_card_doing_bkops(host->card)) { |
1821 | err = mmc_stop_bkops(host->card); | |
1822 | if (err) | |
1823 | goto out; | |
1824 | } | |
1825 | ||
10e5d965 | 1826 | err = mmc_flush_cache(host->card); |
881d926d ME |
1827 | if (err) |
1828 | goto out; | |
1829 | ||
43235679 | 1830 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1831 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1832 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1833 | else if (mmc_can_sleep(host->card)) |
1834 | err = mmc_sleep(host); | |
e6c08586 | 1835 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1836 | err = mmc_deselect_cards(host); |
95cdfb72 | 1837 | |
9ec775f7 | 1838 | if (!err) { |
74590263 | 1839 | mmc_power_off(host); |
9ec775f7 UH |
1840 | mmc_card_set_suspended(host->card); |
1841 | } | |
881d926d ME |
1842 | out: |
1843 | mmc_release_host(host); | |
c3805467 | 1844 | return err; |
6abaa0c9 | 1845 | } |
7ea239d9 | 1846 | |
03d071fc | 1847 | /* |
0cb403a2 | 1848 | * Suspend callback |
03d071fc UH |
1849 | */ |
1850 | static int mmc_suspend(struct mmc_host *host) | |
1851 | { | |
0cb403a2 UH |
1852 | int err; |
1853 | ||
1854 | err = _mmc_suspend(host, true); | |
1855 | if (!err) { | |
1856 | pm_runtime_disable(&host->card->dev); | |
1857 | pm_runtime_set_suspended(&host->card->dev); | |
1858 | } | |
1859 | ||
1860 | return err; | |
03d071fc UH |
1861 | } |
1862 | ||
6abaa0c9 | 1863 | /* |
6abaa0c9 PO |
1864 | * This function tries to determine if the same card is still present |
1865 | * and, if so, restore all state to it. | |
1866 | */ | |
0cb403a2 | 1867 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1868 | { |
9ec775f7 | 1869 | int err = 0; |
6abaa0c9 PO |
1870 | |
1871 | BUG_ON(!host); | |
1872 | BUG_ON(!host->card); | |
1873 | ||
1874 | mmc_claim_host(host); | |
9ec775f7 UH |
1875 | |
1876 | if (!mmc_card_suspended(host->card)) | |
1877 | goto out; | |
1878 | ||
69041150 | 1879 | mmc_power_up(host, host->card->ocr); |
69041150 | 1880 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1881 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1882 | |
9ec775f7 UH |
1883 | out: |
1884 | mmc_release_host(host); | |
95cdfb72 | 1885 | return err; |
6abaa0c9 PO |
1886 | } |
1887 | ||
9ec775f7 UH |
1888 | /* |
1889 | * Shutdown callback | |
1890 | */ | |
1891 | static int mmc_shutdown(struct mmc_host *host) | |
1892 | { | |
1893 | int err = 0; | |
1894 | ||
1895 | /* | |
1896 | * In a specific case for poweroff notify, we need to resume the card | |
1897 | * before we can shutdown it properly. | |
1898 | */ | |
1899 | if (mmc_can_poweroff_notify(host->card) && | |
1900 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1901 | err = _mmc_resume(host); |
9ec775f7 UH |
1902 | |
1903 | if (!err) | |
1904 | err = _mmc_suspend(host, false); | |
1905 | ||
1906 | return err; | |
1907 | } | |
c4d770d7 | 1908 | |
0cb403a2 UH |
1909 | /* |
1910 | * Callback for resume. | |
1911 | */ | |
1912 | static int mmc_resume(struct mmc_host *host) | |
1913 | { | |
0cb403a2 | 1914 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 1915 | return 0; |
0cb403a2 UH |
1916 | } |
1917 | ||
c4d770d7 UH |
1918 | /* |
1919 | * Callback for runtime_suspend. | |
1920 | */ | |
1921 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1922 | { | |
1923 | int err; | |
1924 | ||
1925 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1926 | return 0; | |
1927 | ||
0cb403a2 | 1928 | err = _mmc_suspend(host, true); |
0cc81a8c | 1929 | if (err) |
f42cf8d6 | 1930 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 1931 | mmc_hostname(host), err); |
c4d770d7 | 1932 | |
c4d770d7 UH |
1933 | return err; |
1934 | } | |
1935 | ||
1936 | /* | |
1937 | * Callback for runtime_resume. | |
1938 | */ | |
1939 | static int mmc_runtime_resume(struct mmc_host *host) | |
1940 | { | |
1941 | int err; | |
1942 | ||
0cb403a2 | 1943 | err = _mmc_resume(host); |
520322d9 | 1944 | if (err && err != -ENOMEDIUM) |
c29536e8 | 1945 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
1946 | mmc_hostname(host), err); |
1947 | ||
c4d770d7 UH |
1948 | return 0; |
1949 | } | |
1950 | ||
f855a371 JR |
1951 | int mmc_can_reset(struct mmc_card *card) |
1952 | { | |
1953 | u8 rst_n_function; | |
1954 | ||
1955 | rst_n_function = card->ext_csd.rst_n_function; | |
1956 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
1957 | return 0; | |
1958 | return 1; | |
1959 | } | |
1960 | EXPORT_SYMBOL(mmc_can_reset); | |
1961 | ||
1962 | static int mmc_reset(struct mmc_host *host) | |
1963 | { | |
1964 | struct mmc_card *card = host->card; | |
f855a371 | 1965 | |
437db4c6 AH |
1966 | /* |
1967 | * In the case of recovery, we can't expect flushing the cache to work | |
1968 | * always, but we have a go and ignore errors. | |
1969 | */ | |
1970 | mmc_flush_cache(host->card); | |
1971 | ||
4e6c7178 GG |
1972 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
1973 | mmc_can_reset(card)) { | |
1974 | /* If the card accept RST_n signal, send it. */ | |
1975 | mmc_set_clock(host, host->f_init); | |
1976 | host->ops->hw_reset(host); | |
1977 | /* Set initial state and call mmc_set_ios */ | |
1978 | mmc_set_initial_state(host); | |
1979 | } else { | |
1980 | /* Do a brute force power cycle */ | |
1981 | mmc_power_cycle(host, card->ocr); | |
1982 | } | |
364549dd | 1983 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
1984 | } |
1985 | ||
6abaa0c9 PO |
1986 | static const struct mmc_bus_ops mmc_ops = { |
1987 | .remove = mmc_remove, | |
1988 | .detect = mmc_detect, | |
1989 | .suspend = mmc_suspend, | |
1990 | .resume = mmc_resume, | |
c4d770d7 UH |
1991 | .runtime_suspend = mmc_runtime_suspend, |
1992 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 1993 | .alive = mmc_alive, |
486fdbbc | 1994 | .shutdown = mmc_shutdown, |
f855a371 | 1995 | .reset = mmc_reset, |
6abaa0c9 PO |
1996 | }; |
1997 | ||
1998 | /* | |
1999 | * Starting point for MMC card init. | |
2000 | */ | |
807e8e40 | 2001 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2002 | { |
2003 | int err; | |
69041150 | 2004 | u32 ocr, rocr; |
6abaa0c9 PO |
2005 | |
2006 | BUG_ON(!host); | |
d84075c8 | 2007 | WARN_ON(!host->claimed); |
6abaa0c9 | 2008 | |
44669034 SNX |
2009 | /* Set correct bus mode for MMC before attempting attach */ |
2010 | if (!mmc_host_is_spi(host)) | |
2011 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2012 | ||
807e8e40 AR |
2013 | err = mmc_send_op_cond(host, 0, &ocr); |
2014 | if (err) | |
2015 | return err; | |
2016 | ||
2501c917 | 2017 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2018 | if (host->ocr_avail_mmc) |
2019 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2020 | |
af517150 DB |
2021 | /* |
2022 | * We need to get OCR a different way for SPI. | |
2023 | */ | |
2024 | if (mmc_host_is_spi(host)) { | |
2025 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2026 | if (err) | |
2027 | goto err; | |
2028 | } | |
2029 | ||
69041150 | 2030 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2031 | |
2032 | /* | |
2033 | * Can we support the voltage of the card? | |
2034 | */ | |
69041150 | 2035 | if (!rocr) { |
109b5bed | 2036 | err = -EINVAL; |
6abaa0c9 | 2037 | goto err; |
109b5bed | 2038 | } |
6abaa0c9 PO |
2039 | |
2040 | /* | |
2041 | * Detect and init the card. | |
2042 | */ | |
69041150 | 2043 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2044 | if (err) |
6abaa0c9 PO |
2045 | goto err; |
2046 | ||
2047 | mmc_release_host(host); | |
4101c16a | 2048 | err = mmc_add_card(host->card); |
7ea239d9 | 2049 | if (err) |
2986d0bf | 2050 | goto remove_card; |
7ea239d9 | 2051 | |
2860d060 | 2052 | mmc_claim_host(host); |
7ea239d9 PO |
2053 | return 0; |
2054 | ||
2986d0bf | 2055 | remove_card: |
6abaa0c9 | 2056 | mmc_remove_card(host->card); |
2986d0bf | 2057 | mmc_claim_host(host); |
807e8e40 | 2058 | host->card = NULL; |
7ea239d9 PO |
2059 | err: |
2060 | mmc_detach_bus(host); | |
7ea239d9 | 2061 | |
a3c76eb9 | 2062 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2063 | mmc_hostname(host), err); |
2064 | ||
adf66a0d | 2065 | return err; |
7ea239d9 | 2066 | } |