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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 | ||
08ee80cc PR |
336 | /* |
337 | * Decode extended CSD. | |
338 | */ | |
076ec38a | 339 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 340 | { |
e0c368d5 NJ |
341 | int err = 0, idx; |
342 | unsigned int part_size; | |
81f8a7be HG |
343 | struct device_node *np; |
344 | bool broken_hpi = false; | |
08ee80cc | 345 | |
6da24b78 | 346 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 347 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 348 | if (card->csd.structure == 3) { |
f39b2dd9 | 349 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 350 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 351 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 352 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
353 | err = -EINVAL; |
354 | goto out; | |
355 | } | |
356 | } | |
357 | ||
81f8a7be HG |
358 | np = mmc_of_find_child_device(card->host, 0); |
359 | if (np && of_device_is_compatible(np, "mmc-card")) | |
360 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
361 | of_node_put(np); | |
362 | ||
03a59437 RI |
363 | /* |
364 | * The EXT_CSD format is meant to be forward compatible. As long | |
365 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
366 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
367 | */ | |
b1ebe384 | 368 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 369 | |
f39b2dd9 PR |
370 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
371 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
372 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
373 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 374 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
375 | card->ext_csd.sectors = |
376 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
377 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
378 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
379 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
380 | |
381 | /* Cards with density > 2GiB are sector addressed */ | |
382 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
383 | mmc_card_set_blockaddr(card); |
384 | } | |
96cf5f02 | 385 | |
f39b2dd9 | 386 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 387 | mmc_select_card_type(card); |
7ea239d9 | 388 | |
f39b2dd9 PR |
389 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
390 | card->ext_csd.raw_erase_timeout_mult = | |
391 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
392 | card->ext_csd.raw_hc_erase_grp_size = | |
393 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
394 | if (card->ext_csd.rev >= 3) { |
395 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
396 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
397 | ||
398 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
399 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
400 | |
401 | /* Sleep / awake timeout in 100ns units */ | |
402 | if (sa_shift > 0 && sa_shift <= 0x17) | |
403 | card->ext_csd.sa_timeout = | |
404 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
405 | card->ext_csd.erase_group_def = |
406 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
407 | card->ext_csd.hc_erase_timeout = 300 * | |
408 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
409 | card->ext_csd.hc_erase_size = | |
410 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
411 | |
412 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
413 | |
414 | /* | |
415 | * There are two boot regions of equal size, defined in | |
416 | * multiples of 128K. | |
417 | */ | |
e0c368d5 NJ |
418 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
419 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
420 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
421 | mmc_part_add(card, part_size, | |
422 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
423 | "boot%d", idx, true, |
424 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
425 | } |
426 | } | |
dfe86cba AH |
427 | } |
428 | ||
f39b2dd9 | 429 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 430 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
431 | card->ext_csd.raw_sec_trim_mult = |
432 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
433 | card->ext_csd.raw_sec_erase_mult = | |
434 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
435 | card->ext_csd.raw_sec_feature_support = | |
436 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
437 | card->ext_csd.raw_trim_mult = | |
438 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 439 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 440 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 441 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
442 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
443 | EXT_CSD_PART_SETTING_COMPLETED) | |
444 | card->ext_csd.partition_setting_completed = 1; | |
445 | else | |
446 | card->ext_csd.partition_setting_completed = 0; | |
447 | ||
b4493eea | 448 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 449 | |
b4493eea | 450 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 451 | |
dfe86cba AH |
452 | card->ext_csd.sec_trim_mult = |
453 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
454 | card->ext_csd.sec_erase_mult = | |
455 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
456 | card->ext_csd.sec_feature_support = | |
457 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
458 | card->ext_csd.trim_timeout = 300 * | |
459 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
460 | |
461 | /* | |
462 | * Note that the call to mmc_part_add above defaults to read | |
463 | * only. If this default assumption is changed, the call must | |
464 | * take into account the value of boot_locked below. | |
465 | */ | |
466 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
467 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
468 | |
469 | /* Save power class values */ | |
470 | card->ext_csd.raw_pwr_cl_52_195 = | |
471 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
472 | card->ext_csd.raw_pwr_cl_26_195 = | |
473 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
474 | card->ext_csd.raw_pwr_cl_52_360 = | |
475 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
476 | card->ext_csd.raw_pwr_cl_26_360 = | |
477 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
478 | card->ext_csd.raw_pwr_cl_200_195 = | |
479 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
480 | card->ext_csd.raw_pwr_cl_200_360 = | |
481 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
482 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
483 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
484 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
485 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
486 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
487 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
488 | } |
489 | ||
b2499518 | 490 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
491 | /* Adjust production date as per JEDEC JESD84-B451 */ |
492 | if (card->cid.year < 2010) | |
493 | card->cid.year += 16; | |
494 | ||
950d56ac JC |
495 | /* check whether the eMMC card supports BKOPS */ |
496 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
497 | card->ext_csd.bkops = 1; | |
0501be64 AS |
498 | card->ext_csd.man_bkops_en = |
499 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
500 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
501 | card->ext_csd.raw_bkops_status = |
502 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 AS |
503 | if (!card->ext_csd.man_bkops_en) |
504 | pr_info("%s: MAN_BKOPS_EN bit is not set\n", | |
950d56ac JC |
505 | mmc_hostname(card->host)); |
506 | } | |
507 | ||
eb0d8f13 | 508 | /* check whether the eMMC card supports HPI */ |
81f8a7be | 509 | if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { |
eb0d8f13 JC |
510 | card->ext_csd.hpi = 1; |
511 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
512 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
513 | else | |
514 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
515 | /* | |
516 | * Indicate the maximum timeout to close | |
517 | * a command interrupted by HPI | |
518 | */ | |
519 | card->ext_csd.out_of_int_time = | |
520 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
521 | } | |
522 | ||
f4c5522b | 523 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 524 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
525 | |
526 | /* | |
527 | * RPMB regions are defined in multiples of 128K. | |
528 | */ | |
529 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 530 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
531 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
532 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
533 | "rpmb", 0, false, | |
534 | MMC_BLK_DATA_AREA_RPMB); | |
535 | } | |
b2499518 | 536 | } |
f4c5522b | 537 | |
5238acbe | 538 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
539 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
540 | card->erased_byte = 0xFF; | |
541 | else | |
542 | card->erased_byte = 0x0; | |
543 | ||
336c716a | 544 | /* eMMC v4.5 or later */ |
bec8726a | 545 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
546 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
547 | ||
b23cf0bd SJ |
548 | card->ext_csd.generic_cmd6_time = 10 * |
549 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
550 | card->ext_csd.power_off_longtime = 10 * |
551 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 552 | |
336c716a SJ |
553 | card->ext_csd.cache_size = |
554 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
555 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
556 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
557 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
558 | |
559 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
560 | card->ext_csd.data_sector_size = 4096; | |
561 | else | |
562 | card->ext_csd.data_sector_size = 512; | |
563 | ||
564 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
565 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
566 | card->ext_csd.data_tag_unit_size = | |
567 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
568 | (card->ext_csd.data_sector_size); | |
569 | } else { | |
570 | card->ext_csd.data_tag_unit_size = 0; | |
571 | } | |
abd9ac14 SJ |
572 | |
573 | card->ext_csd.max_packed_writes = | |
574 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
575 | card->ext_csd.max_packed_reads = | |
576 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
577 | } else { |
578 | card->ext_csd.data_sector_size = 512; | |
336c716a | 579 | } |
881d1c25 | 580 | |
0f762426 GG |
581 | /* eMMC v5 or later */ |
582 | if (card->ext_csd.rev >= 7) { | |
583 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
584 | MMC_FIRMWARE_LEN); | |
585 | card->ext_csd.ffu_capable = | |
586 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
587 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
588 | } | |
7ea239d9 | 589 | out: |
08ee80cc PR |
590 | return err; |
591 | } | |
592 | ||
076ec38a UH |
593 | static int mmc_read_ext_csd(struct mmc_card *card) |
594 | { | |
c197787c | 595 | u8 *ext_csd; |
076ec38a UH |
596 | int err; |
597 | ||
c197787c UH |
598 | if (!mmc_can_ext_csd(card)) |
599 | return 0; | |
600 | ||
076ec38a | 601 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
602 | if (err) { |
603 | /* If the host or the card can't do the switch, | |
604 | * fail more gracefully. */ | |
605 | if ((err != -EINVAL) | |
606 | && (err != -ENOSYS) | |
607 | && (err != -EFAULT)) | |
608 | return err; | |
609 | ||
610 | /* | |
611 | * High capacity cards should have this "magic" size | |
612 | * stored in their CSD. | |
613 | */ | |
614 | if (card->csd.capacity == (4096 * 512)) { | |
615 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
616 | mmc_hostname(card->host)); | |
617 | } else { | |
618 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
619 | mmc_hostname(card->host)); | |
620 | err = 0; | |
621 | } | |
622 | ||
076ec38a | 623 | return err; |
c197787c | 624 | } |
076ec38a UH |
625 | |
626 | err = mmc_decode_ext_csd(card, ext_csd); | |
627 | kfree(ext_csd); | |
628 | return err; | |
629 | } | |
630 | ||
f39b2dd9 | 631 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
632 | { |
633 | u8 *bw_ext_csd; | |
634 | int err; | |
635 | ||
f39b2dd9 PR |
636 | if (bus_width == MMC_BUS_WIDTH_1) |
637 | return 0; | |
638 | ||
08ee80cc | 639 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
640 | if (err) |
641 | return err; | |
08ee80cc | 642 | |
08ee80cc | 643 | /* only compare read only fields */ |
dd13b4ed | 644 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 645 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 646 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 647 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 648 | (card->ext_csd.rev == |
08ee80cc | 649 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 650 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 651 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 652 | (card->ext_csd.raw_card_type == |
08ee80cc | 653 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 654 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 655 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 656 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 657 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 658 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 659 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 660 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 661 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 662 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 663 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 664 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 665 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 666 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 667 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 668 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 669 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
670 | (card->ext_csd.raw_sectors[0] == |
671 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
672 | (card->ext_csd.raw_sectors[1] == | |
673 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
674 | (card->ext_csd.raw_sectors[2] == | |
675 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
676 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
677 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
678 | (card->ext_csd.raw_pwr_cl_52_195 == | |
679 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
680 | (card->ext_csd.raw_pwr_cl_26_195 == | |
681 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
682 | (card->ext_csd.raw_pwr_cl_52_360 == | |
683 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
684 | (card->ext_csd.raw_pwr_cl_26_360 == | |
685 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
686 | (card->ext_csd.raw_pwr_cl_200_195 == | |
687 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
688 | (card->ext_csd.raw_pwr_cl_200_360 == | |
689 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
690 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
691 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
692 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
693 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
694 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
695 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
696 | ||
08ee80cc PR |
697 | if (err) |
698 | err = -EINVAL; | |
699 | ||
00b41b58 | 700 | kfree(bw_ext_csd); |
7ea239d9 PO |
701 | return err; |
702 | } | |
703 | ||
51ec92e2 PO |
704 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
705 | card->raw_cid[2], card->raw_cid[3]); | |
706 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
707 | card->raw_csd[2], card->raw_csd[3]); | |
708 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
709 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
710 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 711 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
712 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
713 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
714 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
715 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 716 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 717 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
718 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
719 | card->ext_csd.enhanced_area_offset); | |
720 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
721 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
722 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 723 | |
0f762426 GG |
724 | static ssize_t mmc_fwrev_show(struct device *dev, |
725 | struct device_attribute *attr, | |
726 | char *buf) | |
727 | { | |
728 | struct mmc_card *card = mmc_dev_to_card(dev); | |
729 | ||
730 | if (card->ext_csd.rev < 7) { | |
731 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
732 | } else { | |
733 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
734 | card->ext_csd.fwrev); | |
735 | } | |
736 | } | |
737 | ||
738 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
739 | ||
51ec92e2 PO |
740 | static struct attribute *mmc_std_attrs[] = { |
741 | &dev_attr_cid.attr, | |
742 | &dev_attr_csd.attr, | |
743 | &dev_attr_date.attr, | |
dfe86cba AH |
744 | &dev_attr_erase_size.attr, |
745 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 746 | &dev_attr_fwrev.attr, |
0f762426 | 747 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
748 | &dev_attr_hwrev.attr, |
749 | &dev_attr_manfid.attr, | |
750 | &dev_attr_name.attr, | |
751 | &dev_attr_oemid.attr, | |
51e7e8b6 | 752 | &dev_attr_prv.attr, |
51ec92e2 | 753 | &dev_attr_serial.attr, |
709de99d CD |
754 | &dev_attr_enhanced_area_offset.attr, |
755 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
756 | &dev_attr_raw_rpmb_size_mult.attr, |
757 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
758 | NULL, |
759 | }; | |
d1e58212 | 760 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
761 | |
762 | static struct device_type mmc_type = { | |
d1e58212 | 763 | .groups = mmc_std_groups, |
51ec92e2 PO |
764 | }; |
765 | ||
b87d8dbf G |
766 | /* |
767 | * Select the PowerClass for the current bus width | |
768 | * If power class is defined for 4/8 bit bus in the | |
769 | * extended CSD register, select it by executing the | |
770 | * mmc_switch command. | |
771 | */ | |
2385049d SJ |
772 | static int __mmc_select_powerclass(struct mmc_card *card, |
773 | unsigned int bus_width) | |
b87d8dbf | 774 | { |
2385049d SJ |
775 | struct mmc_host *host = card->host; |
776 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 777 | unsigned int pwrclass_val = 0; |
2385049d | 778 | int err = 0; |
b87d8dbf | 779 | |
b87d8dbf G |
780 | switch (1 << host->ios.vdd) { |
781 | case MMC_VDD_165_195: | |
2385049d SJ |
782 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
783 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
784 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 785 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
786 | ext_csd->raw_pwr_cl_52_195 : |
787 | ext_csd->raw_pwr_cl_ddr_52_195; | |
788 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
789 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 790 | break; |
93fc5a47 SJ |
791 | case MMC_VDD_27_28: |
792 | case MMC_VDD_28_29: | |
793 | case MMC_VDD_29_30: | |
794 | case MMC_VDD_30_31: | |
795 | case MMC_VDD_31_32: | |
b87d8dbf G |
796 | case MMC_VDD_32_33: |
797 | case MMC_VDD_33_34: | |
798 | case MMC_VDD_34_35: | |
799 | case MMC_VDD_35_36: | |
2385049d SJ |
800 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
801 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
802 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 803 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
804 | ext_csd->raw_pwr_cl_52_360 : |
805 | ext_csd->raw_pwr_cl_ddr_52_360; | |
806 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
807 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
808 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
809 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
810 | break; |
811 | default: | |
6606110d JP |
812 | pr_warn("%s: Voltage range not supported for power class\n", |
813 | mmc_hostname(host)); | |
b87d8dbf G |
814 | return -EINVAL; |
815 | } | |
816 | ||
b87d8dbf G |
817 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
818 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
819 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
820 | else | |
821 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
822 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
823 | ||
824 | /* If the power class is different from the default value */ | |
825 | if (pwrclass_val > 0) { | |
826 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
827 | EXT_CSD_POWER_CLASS, | |
828 | pwrclass_val, | |
71fe3eb0 | 829 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
830 | } |
831 | ||
832 | return err; | |
833 | } | |
834 | ||
2385049d SJ |
835 | static int mmc_select_powerclass(struct mmc_card *card) |
836 | { | |
837 | struct mmc_host *host = card->host; | |
838 | u32 bus_width, ext_csd_bits; | |
839 | int err, ddr; | |
840 | ||
841 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 842 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
843 | return 0; |
844 | ||
845 | bus_width = host->ios.bus_width; | |
846 | /* Power class values are defined only for 4/8 bit bus */ | |
847 | if (bus_width == MMC_BUS_WIDTH_1) | |
848 | return 0; | |
849 | ||
850 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
851 | if (ddr) | |
852 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
853 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
854 | else | |
855 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
856 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
857 | ||
858 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
859 | if (err) | |
860 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
861 | mmc_hostname(host), 1 << bus_width, ddr); | |
862 | ||
863 | return err; | |
864 | } | |
865 | ||
a4924c71 | 866 | /* |
577fb131 | 867 | * Set the bus speed for the selected speed mode. |
a4924c71 | 868 | */ |
577fb131 SJ |
869 | static void mmc_set_bus_speed(struct mmc_card *card) |
870 | { | |
871 | unsigned int max_dtr = (unsigned int)-1; | |
872 | ||
0a5b6438 SJ |
873 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
874 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
875 | max_dtr = card->ext_csd.hs200_max_dtr; |
876 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
877 | max_dtr = card->ext_csd.hs_max_dtr; | |
878 | else if (max_dtr > card->csd.max_dtr) | |
879 | max_dtr = card->csd.max_dtr; | |
880 | ||
881 | mmc_set_clock(card->host, max_dtr); | |
882 | } | |
883 | ||
884 | /* | |
885 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
886 | * If the bus width is changed successfully, return the selected width value. | |
887 | * Zero is returned instead of error value if the wide width is not supported. | |
888 | */ | |
889 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 890 | { |
a4924c71 | 891 | static unsigned ext_csd_bits[] = { |
a4924c71 | 892 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 893 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
894 | }; |
895 | static unsigned bus_widths[] = { | |
a4924c71 | 896 | MMC_BUS_WIDTH_8, |
577fb131 | 897 | MMC_BUS_WIDTH_4, |
a4924c71 | 898 | }; |
577fb131 SJ |
899 | struct mmc_host *host = card->host; |
900 | unsigned idx, bus_width = 0; | |
901 | int err = 0; | |
a4924c71 | 902 | |
1c2d26e3 | 903 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
904 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
905 | return 0; | |
a4924c71 | 906 | |
577fb131 | 907 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
908 | |
909 | /* | |
910 | * Unlike SD, MMC cards dont have a configuration register to notify | |
911 | * supported bus width. So bus test command should be run to identify | |
912 | * the supported bus width or compare the ext csd values of current | |
913 | * bus width and ext csd values of 1 bit mode read earlier. | |
914 | */ | |
577fb131 | 915 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
916 | /* |
917 | * Host is capable of 8bit transfer, then switch | |
918 | * the device to work in 8bit transfer mode. If the | |
919 | * mmc switch command returns error then switch to | |
920 | * 4bit transfer mode. On success set the corresponding | |
921 | * bus width on the host. | |
922 | */ | |
923 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
924 | EXT_CSD_BUS_WIDTH, | |
925 | ext_csd_bits[idx], | |
926 | card->ext_csd.generic_cmd6_time); | |
927 | if (err) | |
928 | continue; | |
929 | ||
577fb131 SJ |
930 | bus_width = bus_widths[idx]; |
931 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 932 | |
577fb131 SJ |
933 | /* |
934 | * If controller can't handle bus width test, | |
935 | * compare ext_csd previously read in 1 bit mode | |
936 | * against ext_csd at new bus width | |
937 | */ | |
a4924c71 | 938 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 939 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 940 | else |
577fb131 SJ |
941 | err = mmc_bus_test(card, bus_width); |
942 | ||
943 | if (!err) { | |
944 | err = bus_width; | |
a4924c71 | 945 | break; |
577fb131 SJ |
946 | } else { |
947 | pr_warn("%s: switch to bus width %d failed\n", | |
948 | mmc_hostname(host), ext_csd_bits[idx]); | |
949 | } | |
a4924c71 G |
950 | } |
951 | ||
577fb131 SJ |
952 | return err; |
953 | } | |
954 | ||
955 | /* | |
956 | * Switch to the high-speed mode | |
957 | */ | |
958 | static int mmc_select_hs(struct mmc_card *card) | |
959 | { | |
960 | int err; | |
961 | ||
962 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
963 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
964 | card->ext_csd.generic_cmd6_time, | |
965 | true, true, true); | |
a4924c71 | 966 | if (!err) |
577fb131 SJ |
967 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
968 | ||
969 | return err; | |
970 | } | |
971 | ||
972 | /* | |
973 | * Activate wide bus and DDR if supported. | |
974 | */ | |
975 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
976 | { | |
977 | struct mmc_host *host = card->host; | |
978 | u32 bus_width, ext_csd_bits; | |
979 | int err = 0; | |
980 | ||
981 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
982 | return 0; | |
983 | ||
984 | bus_width = host->ios.bus_width; | |
985 | if (bus_width == MMC_BUS_WIDTH_1) | |
986 | return 0; | |
987 | ||
988 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
989 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
990 | ||
991 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
992 | EXT_CSD_BUS_WIDTH, | |
993 | ext_csd_bits, | |
994 | card->ext_csd.generic_cmd6_time); | |
995 | if (err) { | |
4b75bffc | 996 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
997 | mmc_hostname(host), 1 << bus_width); |
998 | return err; | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1003 | * signaling. | |
1004 | * | |
1005 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1006 | * | |
1007 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1008 | * in the JEDEC spec for DDR. | |
1009 | * | |
312449ef CD |
1010 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1011 | * host controller can support this, like some of the SDHCI | |
1012 | * controller which connect to an eMMC device. Some of these | |
1013 | * host controller still needs to use 1.8v vccq for supporting | |
1014 | * DDR mode. | |
1015 | * | |
1016 | * So the sequence will be: | |
1017 | * if (host and device can both support 1.2v IO) | |
1018 | * use 1.2v IO; | |
1019 | * else if (host and device can both support 1.8v IO) | |
1020 | * use 1.8v IO; | |
1021 | * so if host and device can only support 3.3v IO, this is the | |
1022 | * last choice. | |
577fb131 SJ |
1023 | * |
1024 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1025 | */ | |
312449ef CD |
1026 | err = -EINVAL; |
1027 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1028 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1029 | |
312449ef CD |
1030 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1031 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1032 | ||
1033 | /* make sure vccq is 3.3v after switching disaster */ | |
1034 | if (err) | |
1035 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1036 | ||
1037 | if (!err) | |
1038 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1039 | |
1040 | return err; | |
1041 | } | |
1042 | ||
974007aa AH |
1043 | /* Caller must hold re-tuning */ |
1044 | static int mmc_switch_status(struct mmc_card *card) | |
1045 | { | |
1046 | u32 status; | |
1047 | int err; | |
1048 | ||
1049 | err = mmc_send_status(card, &status); | |
1050 | if (err) | |
1051 | return err; | |
1052 | ||
1053 | return mmc_switch_status_error(card->host, status); | |
1054 | } | |
1055 | ||
0a5b6438 SJ |
1056 | static int mmc_select_hs400(struct mmc_card *card) |
1057 | { | |
1058 | struct mmc_host *host = card->host; | |
d2302933 | 1059 | bool send_status = true; |
51b12f77 | 1060 | unsigned int max_dtr; |
0a5b6438 | 1061 | int err = 0; |
cc4f414c | 1062 | u8 val; |
0a5b6438 SJ |
1063 | |
1064 | /* | |
1065 | * HS400 mode requires 8-bit bus width | |
1066 | */ | |
1067 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1068 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1069 | return 0; | |
1070 | ||
d2302933 AH |
1071 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) |
1072 | send_status = false; | |
1073 | ||
51b12f77 AH |
1074 | /* Reduce frequency to HS frequency */ |
1075 | max_dtr = card->ext_csd.hs_max_dtr; | |
1076 | mmc_set_clock(host, max_dtr); | |
0a5b6438 | 1077 | |
51b12f77 | 1078 | /* Switch card to HS mode */ |
cc4f414c AH |
1079 | val = EXT_CSD_TIMING_HS | |
1080 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1081 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1082 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1083 | card->ext_csd.generic_cmd6_time, |
d2302933 | 1084 | true, send_status, true); |
0a5b6438 | 1085 | if (err) { |
4b75bffc | 1086 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1087 | mmc_hostname(host), err); |
1088 | return err; | |
1089 | } | |
1090 | ||
51b12f77 AH |
1091 | /* Set host controller to HS timing */ |
1092 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1093 | ||
d2302933 AH |
1094 | if (!send_status) { |
1095 | err = mmc_switch_status(card); | |
1096 | if (err) | |
1097 | goto out_err; | |
1098 | } | |
1099 | ||
1100 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1101 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1102 | EXT_CSD_BUS_WIDTH, | |
1103 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1104 | card->ext_csd.generic_cmd6_time); | |
1105 | if (err) { | |
4b75bffc | 1106 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1107 | mmc_hostname(host), err); |
1108 | return err; | |
1109 | } | |
1110 | ||
d2302933 | 1111 | /* Switch card to HS400 */ |
cc4f414c AH |
1112 | val = EXT_CSD_TIMING_HS400 | |
1113 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1114 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1115 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1116 | card->ext_csd.generic_cmd6_time, |
d2302933 | 1117 | true, send_status, true); |
0a5b6438 | 1118 | if (err) { |
4b75bffc | 1119 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1120 | mmc_hostname(host), err); |
1121 | return err; | |
1122 | } | |
1123 | ||
d2302933 | 1124 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1125 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1126 | mmc_set_bus_speed(card); | |
1127 | ||
d2302933 AH |
1128 | if (!send_status) { |
1129 | err = mmc_switch_status(card); | |
1130 | if (err) | |
1131 | goto out_err; | |
1132 | } | |
1133 | ||
0a5b6438 | 1134 | return 0; |
d2302933 AH |
1135 | |
1136 | out_err: | |
1137 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1138 | __func__, err); | |
1139 | return err; | |
0a5b6438 SJ |
1140 | } |
1141 | ||
6376f69d AH |
1142 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1143 | { | |
1144 | return mmc_select_hs400(card); | |
1145 | } | |
1146 | ||
6376f69d AH |
1147 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1148 | { | |
1149 | struct mmc_host *host = card->host; | |
1150 | bool send_status = true; | |
1151 | unsigned int max_dtr; | |
1152 | int err; | |
cc4f414c | 1153 | u8 val; |
6376f69d AH |
1154 | |
1155 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) | |
1156 | send_status = false; | |
1157 | ||
1158 | /* Reduce frequency to HS */ | |
1159 | max_dtr = card->ext_csd.hs_max_dtr; | |
1160 | mmc_set_clock(host, max_dtr); | |
1161 | ||
1162 | /* Switch HS400 to HS DDR */ | |
cc4f414c AH |
1163 | val = EXT_CSD_TIMING_HS | |
1164 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1165 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c | 1166 | val, card->ext_csd.generic_cmd6_time, |
6376f69d AH |
1167 | true, send_status, true); |
1168 | if (err) | |
1169 | goto out_err; | |
1170 | ||
1171 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1172 | ||
1173 | if (!send_status) { | |
1174 | err = mmc_switch_status(card); | |
1175 | if (err) | |
1176 | goto out_err; | |
1177 | } | |
1178 | ||
1179 | /* Switch HS DDR to HS */ | |
1180 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1181 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
1182 | true, send_status, true); | |
1183 | if (err) | |
1184 | goto out_err; | |
1185 | ||
1186 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1187 | ||
1188 | if (!send_status) { | |
1189 | err = mmc_switch_status(card); | |
1190 | if (err) | |
1191 | goto out_err; | |
1192 | } | |
1193 | ||
1194 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1195 | val = EXT_CSD_TIMING_HS200 | |
1196 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1197 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c AH |
1198 | val, card->ext_csd.generic_cmd6_time, true, |
1199 | send_status, true); | |
6376f69d AH |
1200 | if (err) |
1201 | goto out_err; | |
1202 | ||
1203 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1204 | ||
1205 | if (!send_status) { | |
1206 | err = mmc_switch_status(card); | |
1207 | if (err) | |
1208 | goto out_err; | |
1209 | } | |
1210 | ||
1211 | mmc_set_bus_speed(card); | |
1212 | ||
1213 | return 0; | |
1214 | ||
1215 | out_err: | |
1216 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1217 | __func__, err); | |
1218 | return err; | |
1219 | } | |
1220 | ||
cc4f414c AH |
1221 | static void mmc_select_driver_type(struct mmc_card *card) |
1222 | { | |
1223 | int card_drv_type, drive_strength, drv_type; | |
1224 | ||
1225 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1226 | mmc_driver_type_mask(0); | |
1227 | ||
1228 | drive_strength = mmc_select_drive_strength(card, | |
1229 | card->ext_csd.hs200_max_dtr, | |
1230 | card_drv_type, &drv_type); | |
1231 | ||
1232 | card->drive_strength = drive_strength; | |
1233 | ||
1234 | if (drv_type) | |
1235 | mmc_set_driver_type(card->host, drv_type); | |
1236 | } | |
1237 | ||
577fb131 SJ |
1238 | /* |
1239 | * For device supporting HS200 mode, the following sequence | |
1240 | * should be done before executing the tuning process. | |
1241 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1242 | * 2. switch to HS200 mode | |
1243 | * 3. set the clock to > 52Mhz and <=200MHz | |
1244 | */ | |
1245 | static int mmc_select_hs200(struct mmc_card *card) | |
1246 | { | |
1247 | struct mmc_host *host = card->host; | |
1815e61b AH |
1248 | bool send_status = true; |
1249 | unsigned int old_timing; | |
577fb131 | 1250 | int err = -EINVAL; |
cc4f414c | 1251 | u8 val; |
577fb131 SJ |
1252 | |
1253 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1254 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1255 | ||
1256 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1257 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1258 | ||
1259 | /* If fails try again during next card power cycle */ | |
1260 | if (err) | |
1261 | goto err; | |
1262 | ||
cc4f414c AH |
1263 | mmc_select_driver_type(card); |
1264 | ||
1815e61b AH |
1265 | if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) |
1266 | send_status = false; | |
1267 | ||
577fb131 SJ |
1268 | /* |
1269 | * Set the bus width(4 or 8) with host's support and | |
1270 | * switch to HS200 mode if bus width is set successfully. | |
1271 | */ | |
1272 | err = mmc_select_bus_width(card); | |
1273 | if (!IS_ERR_VALUE(err)) { | |
cc4f414c AH |
1274 | val = EXT_CSD_TIMING_HS200 | |
1275 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1276 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1277 | EXT_CSD_HS_TIMING, val, |
577fb131 | 1278 | card->ext_csd.generic_cmd6_time, |
1815e61b AH |
1279 | true, send_status, true); |
1280 | if (err) | |
1281 | goto err; | |
1282 | old_timing = host->ios.timing; | |
1283 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1284 | if (!send_status) { | |
1285 | err = mmc_switch_status(card); | |
1286 | /* | |
1287 | * mmc_select_timing() assumes timing has not changed if | |
1288 | * it is a switch error. | |
1289 | */ | |
1290 | if (err == -EBADMSG) | |
1291 | mmc_set_timing(host, old_timing); | |
1292 | } | |
577fb131 | 1293 | } |
a4924c71 | 1294 | err: |
1815e61b AH |
1295 | if (err) |
1296 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1297 | __func__, err); | |
a4924c71 G |
1298 | return err; |
1299 | } | |
1300 | ||
577fb131 SJ |
1301 | /* |
1302 | * Activate High Speed or HS200 mode if supported. | |
1303 | */ | |
1304 | static int mmc_select_timing(struct mmc_card *card) | |
1305 | { | |
1306 | int err = 0; | |
1307 | ||
148bcab2 | 1308 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1309 | goto bus_speed; |
1310 | ||
1311 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1312 | err = mmc_select_hs200(card); | |
1313 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1314 | err = mmc_select_hs(card); | |
1315 | ||
1316 | if (err && err != -EBADMSG) | |
1317 | return err; | |
1318 | ||
1319 | if (err) { | |
1320 | pr_warn("%s: switch to %s failed\n", | |
1321 | mmc_card_hs(card) ? "high-speed" : | |
1322 | (mmc_card_hs200(card) ? "hs200" : ""), | |
1323 | mmc_hostname(card->host)); | |
1324 | err = 0; | |
1325 | } | |
1326 | ||
1327 | bus_speed: | |
1328 | /* | |
1329 | * Set the bus speed to the selected bus timing. | |
1330 | * If timing is not selected, backward compatible is the default. | |
1331 | */ | |
1332 | mmc_set_bus_speed(card); | |
1333 | return err; | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1338 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1339 | */ |
1340 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1341 | { | |
1342 | struct mmc_host *host = card->host; | |
577fb131 | 1343 | |
0a5b6438 SJ |
1344 | /* |
1345 | * Timing should be adjusted to the HS400 target | |
1346 | * operation frequency for tuning process | |
1347 | */ | |
1348 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1349 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1350 | if (host->ops->prepare_hs400_tuning) | |
1351 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1352 | ||
63e415c6 | 1353 | return mmc_execute_tuning(card); |
577fb131 SJ |
1354 | } |
1355 | ||
7ea239d9 | 1356 | /* |
6abaa0c9 PO |
1357 | * Handle the detection and initialisation of a card. |
1358 | * | |
8769392b | 1359 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1360 | * we're trying to reinitialise. |
7ea239d9 | 1361 | */ |
8c75deae | 1362 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1363 | struct mmc_card *oldcard) |
7ea239d9 PO |
1364 | { |
1365 | struct mmc_card *card; | |
577fb131 | 1366 | int err; |
7ea239d9 | 1367 | u32 cid[4]; |
b676f039 | 1368 | u32 rocr; |
7ea239d9 PO |
1369 | |
1370 | BUG_ON(!host); | |
d84075c8 | 1371 | WARN_ON(!host->claimed); |
7ea239d9 | 1372 | |
44669034 SNX |
1373 | /* Set correct bus mode for MMC before attempting init */ |
1374 | if (!mmc_host_is_spi(host)) | |
1375 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1376 | ||
7ea239d9 PO |
1377 | /* |
1378 | * Since we're changing the OCR value, we seem to | |
1379 | * need to tell some cards to go back to the idle | |
1380 | * state. We wait 1ms to give cards time to | |
1381 | * respond. | |
c3805467 | 1382 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1383 | */ |
1384 | mmc_go_idle(host); | |
1385 | ||
1386 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1387 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1388 | if (err) |
6abaa0c9 | 1389 | goto err; |
7ea239d9 | 1390 | |
af517150 DB |
1391 | /* |
1392 | * For SPI, enable CRC as appropriate. | |
1393 | */ | |
1394 | if (mmc_host_is_spi(host)) { | |
1395 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1396 | if (err) | |
1397 | goto err; | |
1398 | } | |
1399 | ||
7ea239d9 PO |
1400 | /* |
1401 | * Fetch CID from card. | |
1402 | */ | |
af517150 DB |
1403 | if (mmc_host_is_spi(host)) |
1404 | err = mmc_send_cid(host, cid); | |
1405 | else | |
1406 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1407 | if (err) |
7ea239d9 PO |
1408 | goto err; |
1409 | ||
6abaa0c9 | 1410 | if (oldcard) { |
adf66a0d PO |
1411 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1412 | err = -ENOENT; | |
6abaa0c9 | 1413 | goto err; |
adf66a0d | 1414 | } |
6abaa0c9 PO |
1415 | |
1416 | card = oldcard; | |
1417 | } else { | |
1418 | /* | |
1419 | * Allocate card structure. | |
1420 | */ | |
51ec92e2 | 1421 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1422 | if (IS_ERR(card)) { |
1423 | err = PTR_ERR(card); | |
6abaa0c9 | 1424 | goto err; |
adf66a0d | 1425 | } |
7ea239d9 | 1426 | |
69041150 | 1427 | card->ocr = ocr; |
6abaa0c9 PO |
1428 | card->type = MMC_TYPE_MMC; |
1429 | card->rca = 1; | |
1430 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1431 | } | |
7ea239d9 | 1432 | |
eac86321 DA |
1433 | /* |
1434 | * Call the optional HC's init_card function to handle quirks. | |
1435 | */ | |
1436 | if (host->ops->init_card) | |
1437 | host->ops->init_card(host, card); | |
1438 | ||
7ea239d9 | 1439 | /* |
af517150 | 1440 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1441 | */ |
af517150 DB |
1442 | if (!mmc_host_is_spi(host)) { |
1443 | err = mmc_set_relative_addr(card); | |
1444 | if (err) | |
1445 | goto free_card; | |
7ea239d9 | 1446 | |
af517150 DB |
1447 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1448 | } | |
7ea239d9 | 1449 | |
6abaa0c9 PO |
1450 | if (!oldcard) { |
1451 | /* | |
1452 | * Fetch CSD from card. | |
1453 | */ | |
1454 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1455 | if (err) |
6abaa0c9 | 1456 | goto free_card; |
7ea239d9 | 1457 | |
bd766312 | 1458 | err = mmc_decode_csd(card); |
adf66a0d | 1459 | if (err) |
bd766312 PO |
1460 | goto free_card; |
1461 | err = mmc_decode_cid(card); | |
adf66a0d | 1462 | if (err) |
bd766312 | 1463 | goto free_card; |
6abaa0c9 | 1464 | } |
7ea239d9 | 1465 | |
3d705d14 SH |
1466 | /* |
1467 | * handling only for cards supporting DSR and hosts requesting | |
1468 | * DSR configuration | |
1469 | */ | |
1470 | if (card->csd.dsr_imp && host->dsr_req) | |
1471 | mmc_set_dsr(host); | |
1472 | ||
7ea239d9 | 1473 | /* |
89a73cf5 | 1474 | * Select card, as all following commands rely on that. |
7ea239d9 | 1475 | */ |
af517150 DB |
1476 | if (!mmc_host_is_spi(host)) { |
1477 | err = mmc_select_card(card); | |
1478 | if (err) | |
1479 | goto free_card; | |
1480 | } | |
7ea239d9 | 1481 | |
6abaa0c9 | 1482 | if (!oldcard) { |
076ec38a UH |
1483 | /* Read extended CSD. */ |
1484 | err = mmc_read_ext_csd(card); | |
17b0429d | 1485 | if (err) |
6abaa0c9 | 1486 | goto free_card; |
b676f039 PR |
1487 | |
1488 | /* If doing byte addressing, check if required to do sector | |
1489 | * addressing. Handle the case of <2GB cards needing sector | |
1490 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1491 | * ocr register has bit 30 set for sector addressing. | |
1492 | */ | |
1493 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1494 | mmc_card_set_blockaddr(card); | |
1495 | ||
dfe86cba AH |
1496 | /* Erase size depends on CSD and Extended CSD */ |
1497 | mmc_set_erase_size(card); | |
6abaa0c9 | 1498 | } |
7ea239d9 | 1499 | |
709de99d CD |
1500 | /* |
1501 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1502 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1503 | */ |
69803d4f | 1504 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1505 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1506 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1507 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1508 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1509 | |
1510 | if (err && err != -EBADMSG) | |
1511 | goto free_card; | |
1512 | ||
1513 | if (err) { | |
1514 | err = 0; | |
1515 | /* | |
1516 | * Just disable enhanced area off & sz | |
1517 | * will try to enable ERASE_GROUP_DEF | |
1518 | * during next time reinit | |
1519 | */ | |
1520 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1521 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1522 | } else { | |
1523 | card->ext_csd.erase_group_def = 1; | |
1524 | /* | |
1525 | * enable ERASE_GRP_DEF successfully. | |
1526 | * This will affect the erase size, so | |
1527 | * here need to reset erase size | |
1528 | */ | |
1529 | mmc_set_erase_size(card); | |
1530 | } | |
1531 | } | |
1532 | ||
41e2a489 PR |
1533 | /* |
1534 | * Ensure eMMC user default partition is enabled | |
1535 | */ | |
371a689f AW |
1536 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1537 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1538 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1539 | card->ext_csd.part_config, | |
1540 | card->ext_csd.part_time); | |
1541 | if (err && err != -EBADMSG) | |
1542 | goto free_card; | |
41e2a489 PR |
1543 | } |
1544 | ||
bec8726a | 1545 | /* |
43235679 | 1546 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1547 | */ |
43235679 | 1548 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1549 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1550 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1551 | EXT_CSD_POWER_ON, | |
1552 | card->ext_csd.generic_cmd6_time); | |
1553 | if (err && err != -EBADMSG) | |
1554 | goto free_card; | |
bec8726a | 1555 | |
96a85d54 G |
1556 | /* |
1557 | * The err can be -EBADMSG or 0, | |
1558 | * so check for success and update the flag | |
1559 | */ | |
1560 | if (!err) | |
e6c08586 | 1561 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1562 | } |
bec8726a | 1563 | |
89a73cf5 | 1564 | /* |
577fb131 | 1565 | * Select timing interface |
dfc13e84 | 1566 | */ |
577fb131 SJ |
1567 | err = mmc_select_timing(card); |
1568 | if (err) | |
1569 | goto free_card; | |
dfc13e84 | 1570 | |
a4924c71 | 1571 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1572 | err = mmc_hs200_tuning(card); |
1573 | if (err) | |
4b75bffc | 1574 | goto free_card; |
0a5b6438 SJ |
1575 | |
1576 | err = mmc_select_hs400(card); | |
1577 | if (err) | |
4b75bffc | 1578 | goto free_card; |
577fb131 SJ |
1579 | } else if (mmc_card_hs(card)) { |
1580 | /* Select the desired bus width optionally */ | |
1581 | err = mmc_select_bus_width(card); | |
1582 | if (!IS_ERR_VALUE(err)) { | |
1583 | err = mmc_select_hs_ddr(card); | |
1584 | if (err) | |
4b75bffc | 1585 | goto free_card; |
ef0b27d4 | 1586 | } |
89a73cf5 PO |
1587 | } |
1588 | ||
2385049d SJ |
1589 | /* |
1590 | * Choose the power class with selected bus interface | |
1591 | */ | |
1592 | mmc_select_powerclass(card); | |
1593 | ||
52d0974e SJ |
1594 | /* |
1595 | * Enable HPI feature (if supported) | |
1596 | */ | |
1597 | if (card->ext_csd.hpi) { | |
1598 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1599 | EXT_CSD_HPI_MGMT, 1, | |
1600 | card->ext_csd.generic_cmd6_time); | |
1601 | if (err && err != -EBADMSG) | |
1602 | goto free_card; | |
1603 | if (err) { | |
6606110d JP |
1604 | pr_warn("%s: Enabling HPI failed\n", |
1605 | mmc_hostname(card->host)); | |
52d0974e SJ |
1606 | err = 0; |
1607 | } else | |
1608 | card->ext_csd.hpi_en = 1; | |
1609 | } | |
1610 | ||
881d1c25 SJ |
1611 | /* |
1612 | * If cache size is higher than 0, this indicates | |
1613 | * the existence of cache and it can be turned on. | |
1614 | */ | |
7536d3f8 | 1615 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1616 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1617 | EXT_CSD_CACHE_CTRL, 1, |
1618 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1619 | if (err && err != -EBADMSG) |
1620 | goto free_card; | |
1621 | ||
1622 | /* | |
1623 | * Only if no error, cache is turned on successfully. | |
1624 | */ | |
8bc0678b | 1625 | if (err) { |
6606110d JP |
1626 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1627 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1628 | card->ext_csd.cache_ctrl = 0; |
1629 | err = 0; | |
1630 | } else { | |
1631 | card->ext_csd.cache_ctrl = 1; | |
1632 | } | |
881d1c25 SJ |
1633 | } |
1634 | ||
abd9ac14 SJ |
1635 | /* |
1636 | * The mandatory minimum values are defined for packed command. | |
1637 | * read: 5, write: 3 | |
1638 | */ | |
1639 | if (card->ext_csd.max_packed_writes >= 3 && | |
1640 | card->ext_csd.max_packed_reads >= 5 && | |
1641 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1642 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1643 | EXT_CSD_EXP_EVENTS_CTRL, | |
1644 | EXT_CSD_PACKED_EVENT_EN, | |
1645 | card->ext_csd.generic_cmd6_time); | |
1646 | if (err && err != -EBADMSG) | |
1647 | goto free_card; | |
1648 | if (err) { | |
1649 | pr_warn("%s: Enabling packed event failed\n", | |
1650 | mmc_hostname(card->host)); | |
1651 | card->ext_csd.packed_event_en = 0; | |
1652 | err = 0; | |
1653 | } else { | |
1654 | card->ext_csd.packed_event_en = 1; | |
1655 | } | |
1656 | } | |
1657 | ||
6abaa0c9 PO |
1658 | if (!oldcard) |
1659 | host->card = card; | |
1660 | ||
17b0429d | 1661 | return 0; |
6abaa0c9 PO |
1662 | |
1663 | free_card: | |
1664 | if (!oldcard) | |
1665 | mmc_remove_card(card); | |
1666 | err: | |
adf66a0d | 1667 | return err; |
6abaa0c9 PO |
1668 | } |
1669 | ||
07a68216 UH |
1670 | static int mmc_can_sleep(struct mmc_card *card) |
1671 | { | |
1672 | return (card && card->ext_csd.rev >= 3); | |
1673 | } | |
1674 | ||
1675 | static int mmc_sleep(struct mmc_host *host) | |
1676 | { | |
1677 | struct mmc_command cmd = {0}; | |
1678 | struct mmc_card *card = host->card; | |
cb962e04 | 1679 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1680 | int err; |
1681 | ||
436f8daa AH |
1682 | /* Re-tuning can't be done once the card is deselected */ |
1683 | mmc_retune_hold(host); | |
1684 | ||
07a68216 UH |
1685 | err = mmc_deselect_cards(host); |
1686 | if (err) | |
436f8daa | 1687 | goto out_release; |
07a68216 UH |
1688 | |
1689 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1690 | cmd.arg = card->rca << 16; | |
1691 | cmd.arg |= 1 << 15; | |
1692 | ||
cb962e04 UH |
1693 | /* |
1694 | * If the max_busy_timeout of the host is specified, validate it against | |
1695 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1696 | * from doing hw busy detection, which is done by converting to a R1 | |
1697 | * response instead of a R1B. | |
1698 | */ | |
1699 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1700 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1701 | } else { | |
1702 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1703 | cmd.busy_timeout = timeout_ms; | |
1704 | } | |
1705 | ||
07a68216 UH |
1706 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1707 | if (err) | |
436f8daa | 1708 | goto out_release; |
07a68216 UH |
1709 | |
1710 | /* | |
1711 | * If the host does not wait while the card signals busy, then we will | |
1712 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1713 | * SEND_STATUS command to poll the status because that command (and most | |
1714 | * others) is invalid while the card sleeps. | |
1715 | */ | |
cb962e04 UH |
1716 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1717 | mmc_delay(timeout_ms); | |
07a68216 | 1718 | |
436f8daa AH |
1719 | out_release: |
1720 | mmc_retune_release(host); | |
07a68216 UH |
1721 | return err; |
1722 | } | |
1723 | ||
e6c08586 UH |
1724 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1725 | { | |
1726 | return card && | |
1727 | mmc_card_mmc(card) && | |
1728 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1729 | } | |
1730 | ||
1731 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1732 | { | |
1733 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1734 | int err; | |
1735 | ||
1736 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1737 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1738 | timeout = card->ext_csd.power_off_longtime; | |
1739 | ||
878e200b UH |
1740 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1741 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1742 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1743 | if (err) |
1744 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1745 | mmc_hostname(card->host), timeout); | |
1746 | ||
1747 | /* Disable the power off notification after the switch operation. */ | |
1748 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1749 | ||
1750 | return err; | |
1751 | } | |
1752 | ||
6abaa0c9 PO |
1753 | /* |
1754 | * Host is being removed. Free up the current card. | |
1755 | */ | |
1756 | static void mmc_remove(struct mmc_host *host) | |
1757 | { | |
1758 | BUG_ON(!host); | |
1759 | BUG_ON(!host->card); | |
1760 | ||
1761 | mmc_remove_card(host->card); | |
1762 | host->card = NULL; | |
1763 | } | |
1764 | ||
d3049504 AH |
1765 | /* |
1766 | * Card detection - card is alive. | |
1767 | */ | |
1768 | static int mmc_alive(struct mmc_host *host) | |
1769 | { | |
1770 | return mmc_send_status(host->card, NULL); | |
1771 | } | |
1772 | ||
6abaa0c9 PO |
1773 | /* |
1774 | * Card detection callback from host. | |
1775 | */ | |
1776 | static void mmc_detect(struct mmc_host *host) | |
1777 | { | |
1778 | int err; | |
1779 | ||
1780 | BUG_ON(!host); | |
1781 | BUG_ON(!host->card); | |
1782 | ||
e94cfef6 | 1783 | mmc_get_card(host->card); |
6abaa0c9 PO |
1784 | |
1785 | /* | |
1786 | * Just check if our card has been removed. | |
1787 | */ | |
d3049504 | 1788 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1789 | |
e94cfef6 | 1790 | mmc_put_card(host->card); |
6abaa0c9 | 1791 | |
17b0429d | 1792 | if (err) { |
4101c16a | 1793 | mmc_remove(host); |
6abaa0c9 PO |
1794 | |
1795 | mmc_claim_host(host); | |
1796 | mmc_detach_bus(host); | |
7f7e4129 | 1797 | mmc_power_off(host); |
6abaa0c9 PO |
1798 | mmc_release_host(host); |
1799 | } | |
1800 | } | |
1801 | ||
03d071fc | 1802 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1803 | { |
c3805467 | 1804 | int err = 0; |
03d071fc UH |
1805 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1806 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1807 | |
6abaa0c9 PO |
1808 | BUG_ON(!host); |
1809 | BUG_ON(!host->card); | |
7ea239d9 | 1810 | |
6abaa0c9 | 1811 | mmc_claim_host(host); |
881d926d | 1812 | |
9ec775f7 UH |
1813 | if (mmc_card_suspended(host->card)) |
1814 | goto out; | |
1815 | ||
39b9431b UH |
1816 | if (mmc_card_doing_bkops(host->card)) { |
1817 | err = mmc_stop_bkops(host->card); | |
1818 | if (err) | |
1819 | goto out; | |
1820 | } | |
1821 | ||
10e5d965 | 1822 | err = mmc_flush_cache(host->card); |
881d926d ME |
1823 | if (err) |
1824 | goto out; | |
1825 | ||
43235679 | 1826 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1827 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1828 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1829 | else if (mmc_can_sleep(host->card)) |
1830 | err = mmc_sleep(host); | |
e6c08586 | 1831 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1832 | err = mmc_deselect_cards(host); |
95cdfb72 | 1833 | |
9ec775f7 | 1834 | if (!err) { |
74590263 | 1835 | mmc_power_off(host); |
9ec775f7 UH |
1836 | mmc_card_set_suspended(host->card); |
1837 | } | |
881d926d ME |
1838 | out: |
1839 | mmc_release_host(host); | |
c3805467 | 1840 | return err; |
6abaa0c9 | 1841 | } |
7ea239d9 | 1842 | |
03d071fc | 1843 | /* |
0cb403a2 | 1844 | * Suspend callback |
03d071fc UH |
1845 | */ |
1846 | static int mmc_suspend(struct mmc_host *host) | |
1847 | { | |
0cb403a2 UH |
1848 | int err; |
1849 | ||
1850 | err = _mmc_suspend(host, true); | |
1851 | if (!err) { | |
1852 | pm_runtime_disable(&host->card->dev); | |
1853 | pm_runtime_set_suspended(&host->card->dev); | |
1854 | } | |
1855 | ||
1856 | return err; | |
03d071fc UH |
1857 | } |
1858 | ||
6abaa0c9 | 1859 | /* |
6abaa0c9 PO |
1860 | * This function tries to determine if the same card is still present |
1861 | * and, if so, restore all state to it. | |
1862 | */ | |
0cb403a2 | 1863 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1864 | { |
9ec775f7 | 1865 | int err = 0; |
6abaa0c9 PO |
1866 | |
1867 | BUG_ON(!host); | |
1868 | BUG_ON(!host->card); | |
1869 | ||
1870 | mmc_claim_host(host); | |
9ec775f7 UH |
1871 | |
1872 | if (!mmc_card_suspended(host->card)) | |
1873 | goto out; | |
1874 | ||
69041150 | 1875 | mmc_power_up(host, host->card->ocr); |
69041150 | 1876 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1877 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1878 | |
9ec775f7 UH |
1879 | out: |
1880 | mmc_release_host(host); | |
95cdfb72 | 1881 | return err; |
6abaa0c9 PO |
1882 | } |
1883 | ||
9ec775f7 UH |
1884 | /* |
1885 | * Shutdown callback | |
1886 | */ | |
1887 | static int mmc_shutdown(struct mmc_host *host) | |
1888 | { | |
1889 | int err = 0; | |
1890 | ||
1891 | /* | |
1892 | * In a specific case for poweroff notify, we need to resume the card | |
1893 | * before we can shutdown it properly. | |
1894 | */ | |
1895 | if (mmc_can_poweroff_notify(host->card) && | |
1896 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1897 | err = _mmc_resume(host); |
9ec775f7 UH |
1898 | |
1899 | if (!err) | |
1900 | err = _mmc_suspend(host, false); | |
1901 | ||
1902 | return err; | |
1903 | } | |
c4d770d7 | 1904 | |
0cb403a2 UH |
1905 | /* |
1906 | * Callback for resume. | |
1907 | */ | |
1908 | static int mmc_resume(struct mmc_host *host) | |
1909 | { | |
4d223782 | 1910 | int err = 0; |
0cb403a2 | 1911 | |
4d223782 UH |
1912 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1913 | err = _mmc_resume(host); | |
1914 | pm_runtime_set_active(&host->card->dev); | |
1915 | pm_runtime_mark_last_busy(&host->card->dev); | |
1916 | } | |
0cb403a2 UH |
1917 | pm_runtime_enable(&host->card->dev); |
1918 | ||
1919 | return err; | |
1920 | } | |
1921 | ||
c4d770d7 UH |
1922 | /* |
1923 | * Callback for runtime_suspend. | |
1924 | */ | |
1925 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1926 | { | |
1927 | int err; | |
1928 | ||
1929 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1930 | return 0; | |
1931 | ||
0cb403a2 | 1932 | err = _mmc_suspend(host, true); |
0cc81a8c | 1933 | if (err) |
f42cf8d6 | 1934 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 1935 | mmc_hostname(host), err); |
c4d770d7 | 1936 | |
c4d770d7 UH |
1937 | return err; |
1938 | } | |
1939 | ||
1940 | /* | |
1941 | * Callback for runtime_resume. | |
1942 | */ | |
1943 | static int mmc_runtime_resume(struct mmc_host *host) | |
1944 | { | |
1945 | int err; | |
1946 | ||
4d223782 | 1947 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1948 | return 0; |
1949 | ||
0cb403a2 | 1950 | err = _mmc_resume(host); |
c4d770d7 | 1951 | if (err) |
f42cf8d6 | 1952 | pr_err("%s: error %d doing aggressive resume\n", |
c4d770d7 UH |
1953 | mmc_hostname(host), err); |
1954 | ||
c4d770d7 UH |
1955 | return 0; |
1956 | } | |
1957 | ||
f855a371 JR |
1958 | int mmc_can_reset(struct mmc_card *card) |
1959 | { | |
1960 | u8 rst_n_function; | |
1961 | ||
1962 | rst_n_function = card->ext_csd.rst_n_function; | |
1963 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
1964 | return 0; | |
1965 | return 1; | |
1966 | } | |
1967 | EXPORT_SYMBOL(mmc_can_reset); | |
1968 | ||
1969 | static int mmc_reset(struct mmc_host *host) | |
1970 | { | |
1971 | struct mmc_card *card = host->card; | |
f855a371 JR |
1972 | |
1973 | if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) | |
1974 | return -EOPNOTSUPP; | |
1975 | ||
1976 | if (!mmc_can_reset(card)) | |
1977 | return -EOPNOTSUPP; | |
1978 | ||
f855a371 JR |
1979 | mmc_set_clock(host, host->f_init); |
1980 | ||
1981 | host->ops->hw_reset(host); | |
1982 | ||
f855a371 JR |
1983 | /* Set initial state and call mmc_set_ios */ |
1984 | mmc_set_initial_state(host); | |
f855a371 | 1985 | |
364549dd | 1986 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
1987 | } |
1988 | ||
6abaa0c9 PO |
1989 | static const struct mmc_bus_ops mmc_ops = { |
1990 | .remove = mmc_remove, | |
1991 | .detect = mmc_detect, | |
1992 | .suspend = mmc_suspend, | |
1993 | .resume = mmc_resume, | |
c4d770d7 UH |
1994 | .runtime_suspend = mmc_runtime_suspend, |
1995 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 1996 | .alive = mmc_alive, |
486fdbbc | 1997 | .shutdown = mmc_shutdown, |
f855a371 | 1998 | .reset = mmc_reset, |
6abaa0c9 PO |
1999 | }; |
2000 | ||
2001 | /* | |
2002 | * Starting point for MMC card init. | |
2003 | */ | |
807e8e40 | 2004 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2005 | { |
2006 | int err; | |
69041150 | 2007 | u32 ocr, rocr; |
6abaa0c9 PO |
2008 | |
2009 | BUG_ON(!host); | |
d84075c8 | 2010 | WARN_ON(!host->claimed); |
6abaa0c9 | 2011 | |
44669034 SNX |
2012 | /* Set correct bus mode for MMC before attempting attach */ |
2013 | if (!mmc_host_is_spi(host)) | |
2014 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2015 | ||
807e8e40 AR |
2016 | err = mmc_send_op_cond(host, 0, &ocr); |
2017 | if (err) | |
2018 | return err; | |
2019 | ||
2501c917 | 2020 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2021 | if (host->ocr_avail_mmc) |
2022 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2023 | |
af517150 DB |
2024 | /* |
2025 | * We need to get OCR a different way for SPI. | |
2026 | */ | |
2027 | if (mmc_host_is_spi(host)) { | |
2028 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2029 | if (err) | |
2030 | goto err; | |
2031 | } | |
2032 | ||
69041150 | 2033 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2034 | |
2035 | /* | |
2036 | * Can we support the voltage of the card? | |
2037 | */ | |
69041150 | 2038 | if (!rocr) { |
109b5bed | 2039 | err = -EINVAL; |
6abaa0c9 | 2040 | goto err; |
109b5bed | 2041 | } |
6abaa0c9 PO |
2042 | |
2043 | /* | |
2044 | * Detect and init the card. | |
2045 | */ | |
69041150 | 2046 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2047 | if (err) |
6abaa0c9 PO |
2048 | goto err; |
2049 | ||
2050 | mmc_release_host(host); | |
4101c16a | 2051 | err = mmc_add_card(host->card); |
7ea239d9 | 2052 | if (err) |
2986d0bf | 2053 | goto remove_card; |
7ea239d9 | 2054 | |
2860d060 | 2055 | mmc_claim_host(host); |
7ea239d9 PO |
2056 | return 0; |
2057 | ||
2986d0bf | 2058 | remove_card: |
6abaa0c9 | 2059 | mmc_remove_card(host->card); |
2986d0bf | 2060 | mmc_claim_host(host); |
807e8e40 | 2061 | host->card = NULL; |
7ea239d9 PO |
2062 | err: |
2063 | mmc_detach_bus(host); | |
7ea239d9 | 2064 | |
a3c76eb9 | 2065 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2066 | mmc_hostname(host), err); |
2067 | ||
adf66a0d | 2068 | return err; |
7ea239d9 | 2069 | } |