Commit | Line | Data |
---|---|---|
7ea239d9 | 1 | /* |
70f10482 | 2 | * linux/drivers/mmc/core/mmc.c |
7ea239d9 PO |
3 | * |
4 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. | |
5 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. | |
6 | * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/err.h> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
0205a904 | 15 | #include <linux/stat.h> |
0cb403a2 | 16 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
17 | |
18 | #include <linux/mmc/host.h> | |
19 | #include <linux/mmc/card.h> | |
20 | #include <linux/mmc/mmc.h> | |
21 | ||
22 | #include "core.h" | |
4101c16a | 23 | #include "bus.h" |
7ea239d9 | 24 | #include "mmc_ops.h" |
4c4cb171 | 25 | #include "sd_ops.h" |
7ea239d9 PO |
26 | |
27 | static const unsigned int tran_exp[] = { | |
28 | 10000, 100000, 1000000, 10000000, | |
29 | 0, 0, 0, 0 | |
30 | }; | |
31 | ||
32 | static const unsigned char tran_mant[] = { | |
33 | 0, 10, 12, 13, 15, 20, 25, 30, | |
34 | 35, 40, 45, 50, 55, 60, 70, 80, | |
35 | }; | |
36 | ||
37 | static const unsigned int tacc_exp[] = { | |
38 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
39 | }; | |
40 | ||
41 | static const unsigned int tacc_mant[] = { | |
42 | 0, 10, 12, 13, 15, 20, 25, 30, | |
43 | 35, 40, 45, 50, 55, 60, 70, 80, | |
44 | }; | |
45 | ||
46 | #define UNSTUFF_BITS(resp,start,size) \ | |
47 | ({ \ | |
48 | const int __size = size; \ | |
49 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
50 | const int __off = 3 - ((start) / 32); \ | |
51 | const int __shft = (start) & 31; \ | |
52 | u32 __res; \ | |
53 | \ | |
54 | __res = resp[__off] >> __shft; \ | |
55 | if (__size + __shft > 32) \ | |
56 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
57 | __res & __mask; \ | |
58 | }) | |
59 | ||
60 | /* | |
61 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
62 | */ | |
bd766312 | 63 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
64 | { |
65 | u32 *resp = card->raw_cid; | |
66 | ||
67 | /* | |
68 | * The selection of the format here is based upon published | |
69 | * specs from sandisk and from what people have reported. | |
70 | */ | |
71 | switch (card->csd.mmca_vsn) { | |
72 | case 0: /* MMC v1.0 - v1.2 */ | |
73 | case 1: /* MMC v1.4 */ | |
74 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
75 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
76 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
77 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
78 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
79 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
80 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
81 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
82 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
83 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
84 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
85 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
86 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
87 | break; | |
88 | ||
89 | case 2: /* MMC v2.0 - v2.2 */ | |
90 | case 3: /* MMC v3.1 - v3.3 */ | |
91 | case 4: /* MMC v4 */ | |
92 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
93 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
94 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
95 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
96 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
97 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
98 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
99 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 100 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
101 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
102 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
103 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
104 | break; | |
105 | ||
106 | default: | |
a3c76eb9 | 107 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 108 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 109 | return -EINVAL; |
7ea239d9 | 110 | } |
bd766312 PO |
111 | |
112 | return 0; | |
7ea239d9 PO |
113 | } |
114 | ||
dfe86cba AH |
115 | static void mmc_set_erase_size(struct mmc_card *card) |
116 | { | |
117 | if (card->ext_csd.erase_group_def & 1) | |
118 | card->erase_size = card->ext_csd.hc_erase_size; | |
119 | else | |
120 | card->erase_size = card->csd.erase_size; | |
121 | ||
122 | mmc_init_erase(card); | |
123 | } | |
124 | ||
7ea239d9 PO |
125 | /* |
126 | * Given a 128-bit response, decode to our card CSD structure. | |
127 | */ | |
bd766312 | 128 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
129 | { |
130 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 131 | unsigned int e, m, a, b; |
7ea239d9 PO |
132 | u32 *resp = card->raw_csd; |
133 | ||
134 | /* | |
135 | * We only understand CSD structure v1.1 and v1.2. | |
136 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 137 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 138 | */ |
6da24b78 KP |
139 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
140 | if (csd->structure == 0) { | |
a3c76eb9 | 141 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 142 | mmc_hostname(card->host), csd->structure); |
bd766312 | 143 | return -EINVAL; |
7ea239d9 PO |
144 | } |
145 | ||
146 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
147 | m = UNSTUFF_BITS(resp, 115, 4); | |
148 | e = UNSTUFF_BITS(resp, 112, 3); | |
149 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
150 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
151 | ||
152 | m = UNSTUFF_BITS(resp, 99, 4); | |
153 | e = UNSTUFF_BITS(resp, 96, 3); | |
154 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
155 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
156 | ||
157 | e = UNSTUFF_BITS(resp, 47, 3); | |
158 | m = UNSTUFF_BITS(resp, 62, 12); | |
159 | csd->capacity = (1 + m) << (e + 2); | |
160 | ||
161 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
162 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
163 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
164 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 165 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
166 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
167 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
168 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 169 | |
dfe86cba AH |
170 | if (csd->write_blkbits >= 9) { |
171 | a = UNSTUFF_BITS(resp, 42, 5); | |
172 | b = UNSTUFF_BITS(resp, 37, 5); | |
173 | csd->erase_size = (a + 1) * (b + 1); | |
174 | csd->erase_size <<= csd->write_blkbits - 9; | |
175 | } | |
176 | ||
bd766312 | 177 | return 0; |
7ea239d9 PO |
178 | } |
179 | ||
180 | /* | |
08ee80cc | 181 | * Read extended CSD. |
7ea239d9 | 182 | */ |
08ee80cc | 183 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
184 | { |
185 | int err; | |
186 | u8 *ext_csd; | |
187 | ||
188 | BUG_ON(!card); | |
08ee80cc PR |
189 | BUG_ON(!new_ext_csd); |
190 | ||
191 | *new_ext_csd = NULL; | |
7ea239d9 | 192 | |
7ea239d9 | 193 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 194 | return 0; |
7ea239d9 PO |
195 | |
196 | /* | |
197 | * As the ext_csd is so large and mostly unused, we don't store the | |
198 | * raw block in mmc_card. | |
199 | */ | |
200 | ext_csd = kmalloc(512, GFP_KERNEL); | |
201 | if (!ext_csd) { | |
a3c76eb9 | 202 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 203 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 204 | return -ENOMEM; |
7ea239d9 PO |
205 | } |
206 | ||
207 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 208 | if (err) { |
08ee80cc PR |
209 | kfree(ext_csd); |
210 | *new_ext_csd = NULL; | |
211 | ||
d08ebedd WM |
212 | /* If the host or the card can't do the switch, |
213 | * fail more gracefully. */ | |
214 | if ((err != -EINVAL) | |
215 | && (err != -ENOSYS) | |
216 | && (err != -EFAULT)) | |
08ee80cc | 217 | return err; |
adf66a0d | 218 | |
7ea239d9 PO |
219 | /* |
220 | * High capacity cards should have this "magic" size | |
221 | * stored in their CSD. | |
222 | */ | |
223 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 224 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
225 | "on a possible high capacity card. " |
226 | "Card will be ignored.\n", | |
227 | mmc_hostname(card->host)); | |
228 | } else { | |
6606110d | 229 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", |
7ea239d9 | 230 | mmc_hostname(card->host)); |
17b0429d | 231 | err = 0; |
7ea239d9 | 232 | } |
08ee80cc PR |
233 | } else |
234 | *new_ext_csd = ext_csd; | |
adf66a0d | 235 | |
08ee80cc PR |
236 | return err; |
237 | } | |
238 | ||
96cf5f02 SJ |
239 | static void mmc_select_card_type(struct mmc_card *card) |
240 | { | |
241 | struct mmc_host *host = card->host; | |
0a5b6438 | 242 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 243 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 244 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 245 | unsigned int avail_type = 0; |
96cf5f02 | 246 | |
2415c0ef SJ |
247 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
248 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 249 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
250 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
251 | } | |
96cf5f02 SJ |
252 | |
253 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 254 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 255 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
256 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
257 | } | |
96cf5f02 | 258 | |
2415c0ef SJ |
259 | if (caps & MMC_CAP_1_8V_DDR && |
260 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 261 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
262 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
263 | } | |
264 | ||
265 | if (caps & MMC_CAP_1_2V_DDR && | |
266 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
267 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
268 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
269 | } | |
96cf5f02 | 270 | |
2415c0ef SJ |
271 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
272 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 273 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
274 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
275 | } | |
276 | ||
277 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
278 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 279 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
280 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
281 | } | |
96cf5f02 | 282 | |
0a5b6438 SJ |
283 | if (caps2 & MMC_CAP2_HS400_1_8V && |
284 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
285 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
286 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
287 | } | |
288 | ||
289 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
290 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
291 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
292 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
293 | } | |
294 | ||
96cf5f02 | 295 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 296 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 297 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
298 | } |
299 | ||
b4493eea GS |
300 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
301 | { | |
994324bb GS |
302 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
303 | ||
304 | /* | |
305 | * Disable these attributes by default | |
306 | */ | |
307 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
308 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
309 | |
310 | /* | |
311 | * Enhanced area feature support -- check whether the eMMC | |
312 | * card has the Enhanced area enabled. If so, export enhanced | |
313 | * area offset and size to user by adding sysfs interface. | |
314 | */ | |
315 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
316 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
317 | if (card->ext_csd.partition_setting_completed) { |
318 | hc_erase_grp_sz = | |
319 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
320 | hc_wp_grp_sz = | |
321 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 322 | |
994324bb GS |
323 | /* |
324 | * calculate the enhanced data area offset, in bytes | |
325 | */ | |
326 | card->ext_csd.enhanced_area_offset = | |
327 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
328 | (ext_csd[137] << 8) + ext_csd[136]; | |
329 | if (mmc_card_blockaddr(card)) | |
330 | card->ext_csd.enhanced_area_offset <<= 9; | |
331 | /* | |
332 | * calculate the enhanced data area size, in kilobytes | |
333 | */ | |
334 | card->ext_csd.enhanced_area_size = | |
335 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
336 | ext_csd[140]; | |
337 | card->ext_csd.enhanced_area_size *= | |
338 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
339 | card->ext_csd.enhanced_area_size <<= 9; | |
340 | } else { | |
341 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
342 | mmc_hostname(card->host)); | |
343 | } | |
b4493eea GS |
344 | } |
345 | } | |
346 | ||
347 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
348 | { | |
b4493eea | 349 | int idx; |
994324bb GS |
350 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
351 | unsigned int part_size; | |
b4493eea GS |
352 | |
353 | /* | |
354 | * General purpose partition feature support -- | |
355 | * If ext_csd has the size of general purpose partitions, | |
356 | * set size, part_cfg, partition name in mmc_part. | |
357 | */ | |
358 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
359 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
360 | hc_erase_grp_sz = |
361 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
362 | hc_wp_grp_sz = | |
363 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
364 | |
365 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
366 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
367 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
368 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
369 | continue; | |
994324bb GS |
370 | if (card->ext_csd.partition_setting_completed == 0) { |
371 | pr_warn("%s: has partition size defined without partition complete\n", | |
372 | mmc_hostname(card->host)); | |
373 | break; | |
374 | } | |
b4493eea GS |
375 | part_size = |
376 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
377 | << 16) + | |
378 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
379 | << 8) + | |
380 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
381 | part_size *= (size_t)(hc_erase_grp_sz * | |
382 | hc_wp_grp_sz); | |
383 | mmc_part_add(card, part_size << 19, | |
384 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
385 | "gp%d", idx, false, | |
386 | MMC_BLK_DATA_AREA_GP); | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
08ee80cc PR |
391 | /* |
392 | * Decode extended CSD. | |
393 | */ | |
394 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
395 | { | |
e0c368d5 NJ |
396 | int err = 0, idx; |
397 | unsigned int part_size; | |
08ee80cc PR |
398 | |
399 | BUG_ON(!card); | |
400 | ||
401 | if (!ext_csd) | |
402 | return 0; | |
7ea239d9 | 403 | |
6da24b78 | 404 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 405 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 406 | if (card->csd.structure == 3) { |
f39b2dd9 | 407 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 408 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 409 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 410 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
411 | err = -EINVAL; |
412 | goto out; | |
413 | } | |
414 | } | |
415 | ||
03a59437 RI |
416 | /* |
417 | * The EXT_CSD format is meant to be forward compatible. As long | |
418 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
419 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
420 | */ | |
b1ebe384 | 421 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 422 | |
f39b2dd9 PR |
423 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
424 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
425 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
426 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 427 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
428 | card->ext_csd.sectors = |
429 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
430 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
431 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
432 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
433 | |
434 | /* Cards with density > 2GiB are sector addressed */ | |
435 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
436 | mmc_card_set_blockaddr(card); |
437 | } | |
96cf5f02 | 438 | |
f39b2dd9 | 439 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 440 | mmc_select_card_type(card); |
7ea239d9 | 441 | |
f39b2dd9 PR |
442 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
443 | card->ext_csd.raw_erase_timeout_mult = | |
444 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
445 | card->ext_csd.raw_hc_erase_grp_size = | |
446 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
447 | if (card->ext_csd.rev >= 3) { |
448 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
449 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
450 | ||
451 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
452 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
453 | |
454 | /* Sleep / awake timeout in 100ns units */ | |
455 | if (sa_shift > 0 && sa_shift <= 0x17) | |
456 | card->ext_csd.sa_timeout = | |
457 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
458 | card->ext_csd.erase_group_def = |
459 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
460 | card->ext_csd.hc_erase_timeout = 300 * | |
461 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
462 | card->ext_csd.hc_erase_size = | |
463 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
464 | |
465 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
466 | |
467 | /* | |
468 | * There are two boot regions of equal size, defined in | |
469 | * multiples of 128K. | |
470 | */ | |
e0c368d5 NJ |
471 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
472 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
473 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
474 | mmc_part_add(card, part_size, | |
475 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
476 | "boot%d", idx, true, |
477 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
478 | } |
479 | } | |
dfe86cba AH |
480 | } |
481 | ||
f39b2dd9 | 482 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 483 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
484 | card->ext_csd.raw_sec_trim_mult = |
485 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
486 | card->ext_csd.raw_sec_erase_mult = | |
487 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
488 | card->ext_csd.raw_sec_feature_support = | |
489 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
490 | card->ext_csd.raw_trim_mult = | |
491 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 492 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 493 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
494 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
495 | EXT_CSD_PART_SETTING_COMPLETED) | |
496 | card->ext_csd.partition_setting_completed = 1; | |
497 | else | |
498 | card->ext_csd.partition_setting_completed = 0; | |
499 | ||
b4493eea | 500 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 501 | |
b4493eea | 502 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 503 | |
dfe86cba AH |
504 | card->ext_csd.sec_trim_mult = |
505 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
506 | card->ext_csd.sec_erase_mult = | |
507 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
508 | card->ext_csd.sec_feature_support = | |
509 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
510 | card->ext_csd.trim_timeout = 300 * | |
511 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
512 | |
513 | /* | |
514 | * Note that the call to mmc_part_add above defaults to read | |
515 | * only. If this default assumption is changed, the call must | |
516 | * take into account the value of boot_locked below. | |
517 | */ | |
518 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
519 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
520 | |
521 | /* Save power class values */ | |
522 | card->ext_csd.raw_pwr_cl_52_195 = | |
523 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
524 | card->ext_csd.raw_pwr_cl_26_195 = | |
525 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
526 | card->ext_csd.raw_pwr_cl_52_360 = | |
527 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
528 | card->ext_csd.raw_pwr_cl_26_360 = | |
529 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
530 | card->ext_csd.raw_pwr_cl_200_195 = | |
531 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
532 | card->ext_csd.raw_pwr_cl_200_360 = | |
533 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
534 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
535 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
536 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
537 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
538 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
539 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
540 | } |
541 | ||
b2499518 | 542 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
543 | /* Adjust production date as per JEDEC JESD84-B451 */ |
544 | if (card->cid.year < 2010) | |
545 | card->cid.year += 16; | |
546 | ||
950d56ac JC |
547 | /* check whether the eMMC card supports BKOPS */ |
548 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
549 | card->ext_csd.bkops = 1; | |
550 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
551 | card->ext_csd.raw_bkops_status = | |
552 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
553 | if (!card->ext_csd.bkops_en) | |
554 | pr_info("%s: BKOPS_EN bit is not set\n", | |
555 | mmc_hostname(card->host)); | |
556 | } | |
557 | ||
eb0d8f13 JC |
558 | /* check whether the eMMC card supports HPI */ |
559 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
560 | card->ext_csd.hpi = 1; | |
561 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
562 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
563 | else | |
564 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
565 | /* | |
566 | * Indicate the maximum timeout to close | |
567 | * a command interrupted by HPI | |
568 | */ | |
569 | card->ext_csd.out_of_int_time = | |
570 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
571 | } | |
572 | ||
f4c5522b | 573 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 574 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
575 | |
576 | /* | |
577 | * RPMB regions are defined in multiples of 128K. | |
578 | */ | |
579 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 580 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
581 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
582 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
583 | "rpmb", 0, false, | |
584 | MMC_BLK_DATA_AREA_RPMB); | |
585 | } | |
b2499518 | 586 | } |
f4c5522b | 587 | |
5238acbe | 588 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
589 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
590 | card->erased_byte = 0xFF; | |
591 | else | |
592 | card->erased_byte = 0x0; | |
593 | ||
336c716a | 594 | /* eMMC v4.5 or later */ |
bec8726a | 595 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
596 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
597 | ||
b23cf0bd SJ |
598 | card->ext_csd.generic_cmd6_time = 10 * |
599 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
600 | card->ext_csd.power_off_longtime = 10 * |
601 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 602 | |
336c716a SJ |
603 | card->ext_csd.cache_size = |
604 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
605 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
606 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
607 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
608 | |
609 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
610 | card->ext_csd.data_sector_size = 4096; | |
611 | else | |
612 | card->ext_csd.data_sector_size = 512; | |
613 | ||
614 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
615 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
616 | card->ext_csd.data_tag_unit_size = | |
617 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
618 | (card->ext_csd.data_sector_size); | |
619 | } else { | |
620 | card->ext_csd.data_tag_unit_size = 0; | |
621 | } | |
abd9ac14 SJ |
622 | |
623 | card->ext_csd.max_packed_writes = | |
624 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
625 | card->ext_csd.max_packed_reads = | |
626 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
627 | } else { |
628 | card->ext_csd.data_sector_size = 512; | |
336c716a | 629 | } |
881d1c25 | 630 | |
0f762426 GG |
631 | /* eMMC v5 or later */ |
632 | if (card->ext_csd.rev >= 7) { | |
633 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
634 | MMC_FIRMWARE_LEN); | |
635 | card->ext_csd.ffu_capable = | |
636 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
637 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
638 | } | |
7ea239d9 | 639 | out: |
08ee80cc PR |
640 | return err; |
641 | } | |
642 | ||
f39b2dd9 | 643 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
644 | { |
645 | u8 *bw_ext_csd; | |
646 | int err; | |
647 | ||
f39b2dd9 PR |
648 | if (bus_width == MMC_BUS_WIDTH_1) |
649 | return 0; | |
650 | ||
08ee80cc | 651 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 652 | |
f39b2dd9 | 653 | if (err || bw_ext_csd == NULL) { |
f6f44590 | 654 | err = -EINVAL; |
08ee80cc PR |
655 | goto out; |
656 | } | |
657 | ||
08ee80cc | 658 | /* only compare read only fields */ |
dd13b4ed | 659 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 660 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 661 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 662 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 663 | (card->ext_csd.rev == |
08ee80cc | 664 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 665 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 666 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 667 | (card->ext_csd.raw_card_type == |
08ee80cc | 668 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 669 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 670 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 671 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 672 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 673 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 674 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 675 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 676 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 677 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 678 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 679 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 680 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 681 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 682 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 683 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 684 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
685 | (card->ext_csd.raw_sectors[0] == |
686 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
687 | (card->ext_csd.raw_sectors[1] == | |
688 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
689 | (card->ext_csd.raw_sectors[2] == | |
690 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
691 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
692 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
693 | (card->ext_csd.raw_pwr_cl_52_195 == | |
694 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
695 | (card->ext_csd.raw_pwr_cl_26_195 == | |
696 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
697 | (card->ext_csd.raw_pwr_cl_52_360 == | |
698 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
699 | (card->ext_csd.raw_pwr_cl_26_360 == | |
700 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
701 | (card->ext_csd.raw_pwr_cl_200_195 == | |
702 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
703 | (card->ext_csd.raw_pwr_cl_200_360 == | |
704 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
705 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
706 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
707 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
708 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
709 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
710 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
711 | ||
08ee80cc PR |
712 | if (err) |
713 | err = -EINVAL; | |
714 | ||
715 | out: | |
00b41b58 | 716 | kfree(bw_ext_csd); |
7ea239d9 PO |
717 | return err; |
718 | } | |
719 | ||
51ec92e2 PO |
720 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
721 | card->raw_cid[2], card->raw_cid[3]); | |
722 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
723 | card->raw_csd[2], card->raw_csd[3]); | |
724 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
725 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
726 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 727 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
728 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
729 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
730 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
731 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 732 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 733 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
734 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
735 | card->ext_csd.enhanced_area_offset); | |
736 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
737 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
738 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 739 | |
0f762426 GG |
740 | static ssize_t mmc_fwrev_show(struct device *dev, |
741 | struct device_attribute *attr, | |
742 | char *buf) | |
743 | { | |
744 | struct mmc_card *card = mmc_dev_to_card(dev); | |
745 | ||
746 | if (card->ext_csd.rev < 7) { | |
747 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
748 | } else { | |
749 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
750 | card->ext_csd.fwrev); | |
751 | } | |
752 | } | |
753 | ||
754 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
755 | ||
51ec92e2 PO |
756 | static struct attribute *mmc_std_attrs[] = { |
757 | &dev_attr_cid.attr, | |
758 | &dev_attr_csd.attr, | |
759 | &dev_attr_date.attr, | |
dfe86cba AH |
760 | &dev_attr_erase_size.attr, |
761 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 762 | &dev_attr_fwrev.attr, |
0f762426 | 763 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
764 | &dev_attr_hwrev.attr, |
765 | &dev_attr_manfid.attr, | |
766 | &dev_attr_name.attr, | |
767 | &dev_attr_oemid.attr, | |
51e7e8b6 | 768 | &dev_attr_prv.attr, |
51ec92e2 | 769 | &dev_attr_serial.attr, |
709de99d CD |
770 | &dev_attr_enhanced_area_offset.attr, |
771 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
772 | &dev_attr_raw_rpmb_size_mult.attr, |
773 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
774 | NULL, |
775 | }; | |
d1e58212 | 776 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
777 | |
778 | static struct device_type mmc_type = { | |
d1e58212 | 779 | .groups = mmc_std_groups, |
51ec92e2 PO |
780 | }; |
781 | ||
b87d8dbf G |
782 | /* |
783 | * Select the PowerClass for the current bus width | |
784 | * If power class is defined for 4/8 bit bus in the | |
785 | * extended CSD register, select it by executing the | |
786 | * mmc_switch command. | |
787 | */ | |
2385049d SJ |
788 | static int __mmc_select_powerclass(struct mmc_card *card, |
789 | unsigned int bus_width) | |
b87d8dbf | 790 | { |
2385049d SJ |
791 | struct mmc_host *host = card->host; |
792 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 793 | unsigned int pwrclass_val = 0; |
2385049d | 794 | int err = 0; |
b87d8dbf | 795 | |
b87d8dbf G |
796 | /* Power class selection is supported for versions >= 4.0 */ |
797 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
798 | return 0; | |
799 | ||
800 | /* Power class values are defined only for 4/8 bit bus */ | |
801 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
802 | return 0; | |
803 | ||
804 | switch (1 << host->ios.vdd) { | |
805 | case MMC_VDD_165_195: | |
2385049d SJ |
806 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
807 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
808 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 809 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
810 | ext_csd->raw_pwr_cl_52_195 : |
811 | ext_csd->raw_pwr_cl_ddr_52_195; | |
812 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
813 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 814 | break; |
93fc5a47 SJ |
815 | case MMC_VDD_27_28: |
816 | case MMC_VDD_28_29: | |
817 | case MMC_VDD_29_30: | |
818 | case MMC_VDD_30_31: | |
819 | case MMC_VDD_31_32: | |
b87d8dbf G |
820 | case MMC_VDD_32_33: |
821 | case MMC_VDD_33_34: | |
822 | case MMC_VDD_34_35: | |
823 | case MMC_VDD_35_36: | |
2385049d SJ |
824 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
825 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
826 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 827 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
828 | ext_csd->raw_pwr_cl_52_360 : |
829 | ext_csd->raw_pwr_cl_ddr_52_360; | |
830 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
831 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
832 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
833 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
834 | break; |
835 | default: | |
6606110d JP |
836 | pr_warn("%s: Voltage range not supported for power class\n", |
837 | mmc_hostname(host)); | |
b87d8dbf G |
838 | return -EINVAL; |
839 | } | |
840 | ||
b87d8dbf G |
841 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
842 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
843 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
844 | else | |
845 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
846 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
847 | ||
848 | /* If the power class is different from the default value */ | |
849 | if (pwrclass_val > 0) { | |
850 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
851 | EXT_CSD_POWER_CLASS, | |
852 | pwrclass_val, | |
71fe3eb0 | 853 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
854 | } |
855 | ||
856 | return err; | |
857 | } | |
858 | ||
2385049d SJ |
859 | static int mmc_select_powerclass(struct mmc_card *card) |
860 | { | |
861 | struct mmc_host *host = card->host; | |
862 | u32 bus_width, ext_csd_bits; | |
863 | int err, ddr; | |
864 | ||
865 | /* Power class selection is supported for versions >= 4.0 */ | |
866 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
867 | return 0; | |
868 | ||
869 | bus_width = host->ios.bus_width; | |
870 | /* Power class values are defined only for 4/8 bit bus */ | |
871 | if (bus_width == MMC_BUS_WIDTH_1) | |
872 | return 0; | |
873 | ||
874 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
875 | if (ddr) | |
876 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
877 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
878 | else | |
879 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
880 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
881 | ||
882 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
883 | if (err) | |
884 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
885 | mmc_hostname(host), 1 << bus_width, ddr); | |
886 | ||
887 | return err; | |
888 | } | |
889 | ||
a4924c71 | 890 | /* |
577fb131 | 891 | * Set the bus speed for the selected speed mode. |
a4924c71 | 892 | */ |
577fb131 SJ |
893 | static void mmc_set_bus_speed(struct mmc_card *card) |
894 | { | |
895 | unsigned int max_dtr = (unsigned int)-1; | |
896 | ||
0a5b6438 SJ |
897 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
898 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
899 | max_dtr = card->ext_csd.hs200_max_dtr; |
900 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
901 | max_dtr = card->ext_csd.hs_max_dtr; | |
902 | else if (max_dtr > card->csd.max_dtr) | |
903 | max_dtr = card->csd.max_dtr; | |
904 | ||
905 | mmc_set_clock(card->host, max_dtr); | |
906 | } | |
907 | ||
908 | /* | |
909 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
910 | * If the bus width is changed successfully, return the selected width value. | |
911 | * Zero is returned instead of error value if the wide width is not supported. | |
912 | */ | |
913 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 914 | { |
a4924c71 | 915 | static unsigned ext_csd_bits[] = { |
a4924c71 | 916 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 917 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
918 | }; |
919 | static unsigned bus_widths[] = { | |
a4924c71 | 920 | MMC_BUS_WIDTH_8, |
577fb131 | 921 | MMC_BUS_WIDTH_4, |
a4924c71 | 922 | }; |
577fb131 SJ |
923 | struct mmc_host *host = card->host; |
924 | unsigned idx, bus_width = 0; | |
925 | int err = 0; | |
a4924c71 | 926 | |
577fb131 SJ |
927 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && |
928 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) | |
929 | return 0; | |
a4924c71 | 930 | |
577fb131 | 931 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
932 | |
933 | /* | |
934 | * Unlike SD, MMC cards dont have a configuration register to notify | |
935 | * supported bus width. So bus test command should be run to identify | |
936 | * the supported bus width or compare the ext csd values of current | |
937 | * bus width and ext csd values of 1 bit mode read earlier. | |
938 | */ | |
577fb131 | 939 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
940 | /* |
941 | * Host is capable of 8bit transfer, then switch | |
942 | * the device to work in 8bit transfer mode. If the | |
943 | * mmc switch command returns error then switch to | |
944 | * 4bit transfer mode. On success set the corresponding | |
945 | * bus width on the host. | |
946 | */ | |
947 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
948 | EXT_CSD_BUS_WIDTH, | |
949 | ext_csd_bits[idx], | |
950 | card->ext_csd.generic_cmd6_time); | |
951 | if (err) | |
952 | continue; | |
953 | ||
577fb131 SJ |
954 | bus_width = bus_widths[idx]; |
955 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 956 | |
577fb131 SJ |
957 | /* |
958 | * If controller can't handle bus width test, | |
959 | * compare ext_csd previously read in 1 bit mode | |
960 | * against ext_csd at new bus width | |
961 | */ | |
a4924c71 | 962 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 963 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 964 | else |
577fb131 SJ |
965 | err = mmc_bus_test(card, bus_width); |
966 | ||
967 | if (!err) { | |
968 | err = bus_width; | |
a4924c71 | 969 | break; |
577fb131 SJ |
970 | } else { |
971 | pr_warn("%s: switch to bus width %d failed\n", | |
972 | mmc_hostname(host), ext_csd_bits[idx]); | |
973 | } | |
a4924c71 G |
974 | } |
975 | ||
577fb131 SJ |
976 | return err; |
977 | } | |
978 | ||
979 | /* | |
980 | * Switch to the high-speed mode | |
981 | */ | |
982 | static int mmc_select_hs(struct mmc_card *card) | |
983 | { | |
984 | int err; | |
985 | ||
986 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
987 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
988 | card->ext_csd.generic_cmd6_time, | |
989 | true, true, true); | |
a4924c71 | 990 | if (!err) |
577fb131 SJ |
991 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
992 | ||
993 | return err; | |
994 | } | |
995 | ||
996 | /* | |
997 | * Activate wide bus and DDR if supported. | |
998 | */ | |
999 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1000 | { | |
1001 | struct mmc_host *host = card->host; | |
1002 | u32 bus_width, ext_csd_bits; | |
1003 | int err = 0; | |
1004 | ||
1005 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1006 | return 0; | |
1007 | ||
1008 | bus_width = host->ios.bus_width; | |
1009 | if (bus_width == MMC_BUS_WIDTH_1) | |
1010 | return 0; | |
1011 | ||
1012 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1013 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1014 | ||
1015 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1016 | EXT_CSD_BUS_WIDTH, | |
1017 | ext_csd_bits, | |
1018 | card->ext_csd.generic_cmd6_time); | |
1019 | if (err) { | |
4b75bffc | 1020 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1021 | mmc_hostname(host), 1 << bus_width); |
1022 | return err; | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1027 | * signaling. | |
1028 | * | |
1029 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1030 | * | |
1031 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1032 | * in the JEDEC spec for DDR. | |
1033 | * | |
312449ef CD |
1034 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1035 | * host controller can support this, like some of the SDHCI | |
1036 | * controller which connect to an eMMC device. Some of these | |
1037 | * host controller still needs to use 1.8v vccq for supporting | |
1038 | * DDR mode. | |
1039 | * | |
1040 | * So the sequence will be: | |
1041 | * if (host and device can both support 1.2v IO) | |
1042 | * use 1.2v IO; | |
1043 | * else if (host and device can both support 1.8v IO) | |
1044 | * use 1.8v IO; | |
1045 | * so if host and device can only support 3.3v IO, this is the | |
1046 | * last choice. | |
577fb131 SJ |
1047 | * |
1048 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1049 | */ | |
312449ef CD |
1050 | err = -EINVAL; |
1051 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1052 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1053 | |
312449ef CD |
1054 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1055 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1056 | ||
1057 | /* make sure vccq is 3.3v after switching disaster */ | |
1058 | if (err) | |
1059 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1060 | ||
1061 | if (!err) | |
1062 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1063 | |
1064 | return err; | |
1065 | } | |
1066 | ||
0a5b6438 SJ |
1067 | static int mmc_select_hs400(struct mmc_card *card) |
1068 | { | |
1069 | struct mmc_host *host = card->host; | |
1070 | int err = 0; | |
1071 | ||
1072 | /* | |
1073 | * HS400 mode requires 8-bit bus width | |
1074 | */ | |
1075 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1076 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1077 | return 0; | |
1078 | ||
1079 | /* | |
1080 | * Before switching to dual data rate operation for HS400, | |
1081 | * it is required to convert from HS200 mode to HS mode. | |
1082 | */ | |
1083 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1084 | mmc_set_bus_speed(card); | |
1085 | ||
1086 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1087 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1088 | card->ext_csd.generic_cmd6_time, | |
1089 | true, true, true); | |
1090 | if (err) { | |
4b75bffc | 1091 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1092 | mmc_hostname(host), err); |
1093 | return err; | |
1094 | } | |
1095 | ||
1096 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1097 | EXT_CSD_BUS_WIDTH, | |
1098 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1099 | card->ext_csd.generic_cmd6_time); | |
1100 | if (err) { | |
4b75bffc | 1101 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1102 | mmc_hostname(host), err); |
1103 | return err; | |
1104 | } | |
1105 | ||
1106 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1107 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, | |
1108 | card->ext_csd.generic_cmd6_time, | |
1109 | true, true, true); | |
1110 | if (err) { | |
4b75bffc | 1111 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1112 | mmc_hostname(host), err); |
1113 | return err; | |
1114 | } | |
1115 | ||
1116 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1117 | mmc_set_bus_speed(card); | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
577fb131 SJ |
1122 | /* |
1123 | * For device supporting HS200 mode, the following sequence | |
1124 | * should be done before executing the tuning process. | |
1125 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1126 | * 2. switch to HS200 mode | |
1127 | * 3. set the clock to > 52Mhz and <=200MHz | |
1128 | */ | |
1129 | static int mmc_select_hs200(struct mmc_card *card) | |
1130 | { | |
1131 | struct mmc_host *host = card->host; | |
1132 | int err = -EINVAL; | |
1133 | ||
1134 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1135 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1136 | ||
1137 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1138 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1139 | ||
1140 | /* If fails try again during next card power cycle */ | |
1141 | if (err) | |
1142 | goto err; | |
1143 | ||
1144 | /* | |
1145 | * Set the bus width(4 or 8) with host's support and | |
1146 | * switch to HS200 mode if bus width is set successfully. | |
1147 | */ | |
1148 | err = mmc_select_bus_width(card); | |
1149 | if (!IS_ERR_VALUE(err)) { | |
4509f847 | 1150 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
577fb131 SJ |
1151 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, |
1152 | card->ext_csd.generic_cmd6_time, | |
1153 | true, true, true); | |
1154 | if (!err) | |
1155 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1156 | } | |
a4924c71 G |
1157 | err: |
1158 | return err; | |
1159 | } | |
1160 | ||
577fb131 SJ |
1161 | /* |
1162 | * Activate High Speed or HS200 mode if supported. | |
1163 | */ | |
1164 | static int mmc_select_timing(struct mmc_card *card) | |
1165 | { | |
1166 | int err = 0; | |
1167 | ||
1168 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && | |
1169 | card->ext_csd.hs_max_dtr == 0)) | |
1170 | goto bus_speed; | |
1171 | ||
1172 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1173 | err = mmc_select_hs200(card); | |
1174 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1175 | err = mmc_select_hs(card); | |
1176 | ||
1177 | if (err && err != -EBADMSG) | |
1178 | return err; | |
1179 | ||
1180 | if (err) { | |
1181 | pr_warn("%s: switch to %s failed\n", | |
1182 | mmc_card_hs(card) ? "high-speed" : | |
1183 | (mmc_card_hs200(card) ? "hs200" : ""), | |
1184 | mmc_hostname(card->host)); | |
1185 | err = 0; | |
1186 | } | |
1187 | ||
1188 | bus_speed: | |
1189 | /* | |
1190 | * Set the bus speed to the selected bus timing. | |
1191 | * If timing is not selected, backward compatible is the default. | |
1192 | */ | |
1193 | mmc_set_bus_speed(card); | |
1194 | return err; | |
1195 | } | |
1196 | ||
48d11e06 SB |
1197 | const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE] = { |
1198 | 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, | |
1199 | 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, | |
1200 | 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, | |
1201 | 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, | |
1202 | 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, | |
1203 | 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, | |
1204 | 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, | |
1205 | 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, | |
1206 | }; | |
1207 | EXPORT_SYMBOL(tuning_blk_pattern_4bit); | |
1208 | ||
1209 | const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE] = { | |
1210 | 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, | |
1211 | 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, | |
1212 | 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, | |
1213 | 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, | |
1214 | 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, | |
1215 | 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, | |
1216 | 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, | |
1217 | 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, | |
1218 | 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, | |
1219 | 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, | |
1220 | 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, | |
1221 | 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, | |
1222 | 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, | |
1223 | 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, | |
1224 | 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, | |
1225 | 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, | |
1226 | }; | |
1227 | EXPORT_SYMBOL(tuning_blk_pattern_8bit); | |
1228 | ||
577fb131 SJ |
1229 | /* |
1230 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1231 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1232 | */ |
1233 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1234 | { | |
1235 | struct mmc_host *host = card->host; | |
1236 | int err = 0; | |
1237 | ||
0a5b6438 SJ |
1238 | /* |
1239 | * Timing should be adjusted to the HS400 target | |
1240 | * operation frequency for tuning process | |
1241 | */ | |
1242 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1243 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1244 | if (host->ops->prepare_hs400_tuning) | |
1245 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1246 | ||
577fb131 SJ |
1247 | if (host->ops->execute_tuning) { |
1248 | mmc_host_clk_hold(host); | |
1249 | err = host->ops->execute_tuning(host, | |
1250 | MMC_SEND_TUNING_BLOCK_HS200); | |
1251 | mmc_host_clk_release(host); | |
1252 | ||
1253 | if (err) | |
4b75bffc | 1254 | pr_err("%s: tuning execution failed\n", |
577fb131 SJ |
1255 | mmc_hostname(host)); |
1256 | } | |
1257 | ||
1258 | return err; | |
1259 | } | |
1260 | ||
7ea239d9 | 1261 | /* |
6abaa0c9 PO |
1262 | * Handle the detection and initialisation of a card. |
1263 | * | |
8769392b | 1264 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1265 | * we're trying to reinitialise. |
7ea239d9 | 1266 | */ |
8c75deae | 1267 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1268 | struct mmc_card *oldcard) |
7ea239d9 PO |
1269 | { |
1270 | struct mmc_card *card; | |
577fb131 | 1271 | int err; |
7ea239d9 | 1272 | u32 cid[4]; |
b676f039 | 1273 | u32 rocr; |
08ee80cc | 1274 | u8 *ext_csd = NULL; |
7ea239d9 PO |
1275 | |
1276 | BUG_ON(!host); | |
d84075c8 | 1277 | WARN_ON(!host->claimed); |
7ea239d9 | 1278 | |
44669034 SNX |
1279 | /* Set correct bus mode for MMC before attempting init */ |
1280 | if (!mmc_host_is_spi(host)) | |
1281 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1282 | ||
7ea239d9 PO |
1283 | /* |
1284 | * Since we're changing the OCR value, we seem to | |
1285 | * need to tell some cards to go back to the idle | |
1286 | * state. We wait 1ms to give cards time to | |
1287 | * respond. | |
c3805467 | 1288 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1289 | */ |
1290 | mmc_go_idle(host); | |
1291 | ||
1292 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1293 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1294 | if (err) |
6abaa0c9 | 1295 | goto err; |
7ea239d9 | 1296 | |
af517150 DB |
1297 | /* |
1298 | * For SPI, enable CRC as appropriate. | |
1299 | */ | |
1300 | if (mmc_host_is_spi(host)) { | |
1301 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1302 | if (err) | |
1303 | goto err; | |
1304 | } | |
1305 | ||
7ea239d9 PO |
1306 | /* |
1307 | * Fetch CID from card. | |
1308 | */ | |
af517150 DB |
1309 | if (mmc_host_is_spi(host)) |
1310 | err = mmc_send_cid(host, cid); | |
1311 | else | |
1312 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1313 | if (err) |
7ea239d9 PO |
1314 | goto err; |
1315 | ||
6abaa0c9 | 1316 | if (oldcard) { |
adf66a0d PO |
1317 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1318 | err = -ENOENT; | |
6abaa0c9 | 1319 | goto err; |
adf66a0d | 1320 | } |
6abaa0c9 PO |
1321 | |
1322 | card = oldcard; | |
1323 | } else { | |
1324 | /* | |
1325 | * Allocate card structure. | |
1326 | */ | |
51ec92e2 | 1327 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1328 | if (IS_ERR(card)) { |
1329 | err = PTR_ERR(card); | |
6abaa0c9 | 1330 | goto err; |
adf66a0d | 1331 | } |
7ea239d9 | 1332 | |
69041150 | 1333 | card->ocr = ocr; |
6abaa0c9 PO |
1334 | card->type = MMC_TYPE_MMC; |
1335 | card->rca = 1; | |
1336 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1337 | } | |
7ea239d9 PO |
1338 | |
1339 | /* | |
af517150 | 1340 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1341 | */ |
af517150 DB |
1342 | if (!mmc_host_is_spi(host)) { |
1343 | err = mmc_set_relative_addr(card); | |
1344 | if (err) | |
1345 | goto free_card; | |
7ea239d9 | 1346 | |
af517150 DB |
1347 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1348 | } | |
7ea239d9 | 1349 | |
6abaa0c9 PO |
1350 | if (!oldcard) { |
1351 | /* | |
1352 | * Fetch CSD from card. | |
1353 | */ | |
1354 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1355 | if (err) |
6abaa0c9 | 1356 | goto free_card; |
7ea239d9 | 1357 | |
bd766312 | 1358 | err = mmc_decode_csd(card); |
adf66a0d | 1359 | if (err) |
bd766312 PO |
1360 | goto free_card; |
1361 | err = mmc_decode_cid(card); | |
adf66a0d | 1362 | if (err) |
bd766312 | 1363 | goto free_card; |
6abaa0c9 | 1364 | } |
7ea239d9 | 1365 | |
3d705d14 SH |
1366 | /* |
1367 | * handling only for cards supporting DSR and hosts requesting | |
1368 | * DSR configuration | |
1369 | */ | |
1370 | if (card->csd.dsr_imp && host->dsr_req) | |
1371 | mmc_set_dsr(host); | |
1372 | ||
7ea239d9 | 1373 | /* |
89a73cf5 | 1374 | * Select card, as all following commands rely on that. |
7ea239d9 | 1375 | */ |
af517150 DB |
1376 | if (!mmc_host_is_spi(host)) { |
1377 | err = mmc_select_card(card); | |
1378 | if (err) | |
1379 | goto free_card; | |
1380 | } | |
7ea239d9 | 1381 | |
6abaa0c9 PO |
1382 | if (!oldcard) { |
1383 | /* | |
af517150 | 1384 | * Fetch and process extended CSD. |
6abaa0c9 | 1385 | */ |
08ee80cc PR |
1386 | |
1387 | err = mmc_get_ext_csd(card, &ext_csd); | |
1388 | if (err) | |
1389 | goto free_card; | |
1390 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 1391 | if (err) |
6abaa0c9 | 1392 | goto free_card; |
b676f039 PR |
1393 | |
1394 | /* If doing byte addressing, check if required to do sector | |
1395 | * addressing. Handle the case of <2GB cards needing sector | |
1396 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1397 | * ocr register has bit 30 set for sector addressing. | |
1398 | */ | |
1399 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1400 | mmc_card_set_blockaddr(card); | |
1401 | ||
dfe86cba AH |
1402 | /* Erase size depends on CSD and Extended CSD */ |
1403 | mmc_set_erase_size(card); | |
6abaa0c9 | 1404 | } |
7ea239d9 | 1405 | |
709de99d CD |
1406 | /* |
1407 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1408 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1409 | */ |
69803d4f | 1410 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1411 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1412 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1413 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1414 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1415 | |
1416 | if (err && err != -EBADMSG) | |
1417 | goto free_card; | |
1418 | ||
1419 | if (err) { | |
1420 | err = 0; | |
1421 | /* | |
1422 | * Just disable enhanced area off & sz | |
1423 | * will try to enable ERASE_GROUP_DEF | |
1424 | * during next time reinit | |
1425 | */ | |
1426 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1427 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1428 | } else { | |
1429 | card->ext_csd.erase_group_def = 1; | |
1430 | /* | |
1431 | * enable ERASE_GRP_DEF successfully. | |
1432 | * This will affect the erase size, so | |
1433 | * here need to reset erase size | |
1434 | */ | |
1435 | mmc_set_erase_size(card); | |
1436 | } | |
1437 | } | |
1438 | ||
41e2a489 PR |
1439 | /* |
1440 | * Ensure eMMC user default partition is enabled | |
1441 | */ | |
371a689f AW |
1442 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1443 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1444 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1445 | card->ext_csd.part_config, | |
1446 | card->ext_csd.part_time); | |
1447 | if (err && err != -EBADMSG) | |
1448 | goto free_card; | |
41e2a489 PR |
1449 | } |
1450 | ||
bec8726a | 1451 | /* |
43235679 | 1452 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1453 | */ |
43235679 | 1454 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1455 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1456 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1457 | EXT_CSD_POWER_ON, | |
1458 | card->ext_csd.generic_cmd6_time); | |
1459 | if (err && err != -EBADMSG) | |
1460 | goto free_card; | |
bec8726a | 1461 | |
96a85d54 G |
1462 | /* |
1463 | * The err can be -EBADMSG or 0, | |
1464 | * so check for success and update the flag | |
1465 | */ | |
1466 | if (!err) | |
e6c08586 | 1467 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1468 | } |
bec8726a | 1469 | |
89a73cf5 | 1470 | /* |
577fb131 | 1471 | * Select timing interface |
dfc13e84 | 1472 | */ |
577fb131 SJ |
1473 | err = mmc_select_timing(card); |
1474 | if (err) | |
1475 | goto free_card; | |
dfc13e84 | 1476 | |
a4924c71 | 1477 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1478 | err = mmc_hs200_tuning(card); |
1479 | if (err) | |
4b75bffc | 1480 | goto free_card; |
0a5b6438 SJ |
1481 | |
1482 | err = mmc_select_hs400(card); | |
1483 | if (err) | |
4b75bffc | 1484 | goto free_card; |
577fb131 SJ |
1485 | } else if (mmc_card_hs(card)) { |
1486 | /* Select the desired bus width optionally */ | |
1487 | err = mmc_select_bus_width(card); | |
1488 | if (!IS_ERR_VALUE(err)) { | |
1489 | err = mmc_select_hs_ddr(card); | |
1490 | if (err) | |
4b75bffc | 1491 | goto free_card; |
ef0b27d4 | 1492 | } |
89a73cf5 PO |
1493 | } |
1494 | ||
2385049d SJ |
1495 | /* |
1496 | * Choose the power class with selected bus interface | |
1497 | */ | |
1498 | mmc_select_powerclass(card); | |
1499 | ||
52d0974e SJ |
1500 | /* |
1501 | * Enable HPI feature (if supported) | |
1502 | */ | |
1503 | if (card->ext_csd.hpi) { | |
1504 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1505 | EXT_CSD_HPI_MGMT, 1, | |
1506 | card->ext_csd.generic_cmd6_time); | |
1507 | if (err && err != -EBADMSG) | |
1508 | goto free_card; | |
1509 | if (err) { | |
6606110d JP |
1510 | pr_warn("%s: Enabling HPI failed\n", |
1511 | mmc_hostname(card->host)); | |
52d0974e SJ |
1512 | err = 0; |
1513 | } else | |
1514 | card->ext_csd.hpi_en = 1; | |
1515 | } | |
1516 | ||
881d1c25 SJ |
1517 | /* |
1518 | * If cache size is higher than 0, this indicates | |
1519 | * the existence of cache and it can be turned on. | |
1520 | */ | |
7536d3f8 | 1521 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1522 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1523 | EXT_CSD_CACHE_CTRL, 1, |
1524 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1525 | if (err && err != -EBADMSG) |
1526 | goto free_card; | |
1527 | ||
1528 | /* | |
1529 | * Only if no error, cache is turned on successfully. | |
1530 | */ | |
8bc0678b | 1531 | if (err) { |
6606110d JP |
1532 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1533 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1534 | card->ext_csd.cache_ctrl = 0; |
1535 | err = 0; | |
1536 | } else { | |
1537 | card->ext_csd.cache_ctrl = 1; | |
1538 | } | |
881d1c25 SJ |
1539 | } |
1540 | ||
abd9ac14 SJ |
1541 | /* |
1542 | * The mandatory minimum values are defined for packed command. | |
1543 | * read: 5, write: 3 | |
1544 | */ | |
1545 | if (card->ext_csd.max_packed_writes >= 3 && | |
1546 | card->ext_csd.max_packed_reads >= 5 && | |
1547 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1548 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1549 | EXT_CSD_EXP_EVENTS_CTRL, | |
1550 | EXT_CSD_PACKED_EVENT_EN, | |
1551 | card->ext_csd.generic_cmd6_time); | |
1552 | if (err && err != -EBADMSG) | |
1553 | goto free_card; | |
1554 | if (err) { | |
1555 | pr_warn("%s: Enabling packed event failed\n", | |
1556 | mmc_hostname(card->host)); | |
1557 | card->ext_csd.packed_event_en = 0; | |
1558 | err = 0; | |
1559 | } else { | |
1560 | card->ext_csd.packed_event_en = 1; | |
1561 | } | |
1562 | } | |
1563 | ||
6abaa0c9 PO |
1564 | if (!oldcard) |
1565 | host->card = card; | |
1566 | ||
00b41b58 | 1567 | kfree(ext_csd); |
17b0429d | 1568 | return 0; |
6abaa0c9 PO |
1569 | |
1570 | free_card: | |
1571 | if (!oldcard) | |
1572 | mmc_remove_card(card); | |
1573 | err: | |
00b41b58 | 1574 | kfree(ext_csd); |
6abaa0c9 | 1575 | |
adf66a0d | 1576 | return err; |
6abaa0c9 PO |
1577 | } |
1578 | ||
07a68216 UH |
1579 | static int mmc_can_sleep(struct mmc_card *card) |
1580 | { | |
1581 | return (card && card->ext_csd.rev >= 3); | |
1582 | } | |
1583 | ||
1584 | static int mmc_sleep(struct mmc_host *host) | |
1585 | { | |
1586 | struct mmc_command cmd = {0}; | |
1587 | struct mmc_card *card = host->card; | |
cb962e04 | 1588 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1589 | int err; |
1590 | ||
07a68216 UH |
1591 | err = mmc_deselect_cards(host); |
1592 | if (err) | |
1593 | return err; | |
1594 | ||
1595 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1596 | cmd.arg = card->rca << 16; | |
1597 | cmd.arg |= 1 << 15; | |
1598 | ||
cb962e04 UH |
1599 | /* |
1600 | * If the max_busy_timeout of the host is specified, validate it against | |
1601 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1602 | * from doing hw busy detection, which is done by converting to a R1 | |
1603 | * response instead of a R1B. | |
1604 | */ | |
1605 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1606 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1607 | } else { | |
1608 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1609 | cmd.busy_timeout = timeout_ms; | |
1610 | } | |
1611 | ||
07a68216 UH |
1612 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1613 | if (err) | |
1614 | return err; | |
1615 | ||
1616 | /* | |
1617 | * If the host does not wait while the card signals busy, then we will | |
1618 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1619 | * SEND_STATUS command to poll the status because that command (and most | |
1620 | * others) is invalid while the card sleeps. | |
1621 | */ | |
cb962e04 UH |
1622 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1623 | mmc_delay(timeout_ms); | |
07a68216 UH |
1624 | |
1625 | return err; | |
1626 | } | |
1627 | ||
e6c08586 UH |
1628 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1629 | { | |
1630 | return card && | |
1631 | mmc_card_mmc(card) && | |
1632 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1633 | } | |
1634 | ||
1635 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1636 | { | |
1637 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1638 | int err; | |
1639 | ||
1640 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1641 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1642 | timeout = card->ext_csd.power_off_longtime; | |
1643 | ||
878e200b UH |
1644 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1645 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1646 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1647 | if (err) |
1648 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1649 | mmc_hostname(card->host), timeout); | |
1650 | ||
1651 | /* Disable the power off notification after the switch operation. */ | |
1652 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1653 | ||
1654 | return err; | |
1655 | } | |
1656 | ||
6abaa0c9 PO |
1657 | /* |
1658 | * Host is being removed. Free up the current card. | |
1659 | */ | |
1660 | static void mmc_remove(struct mmc_host *host) | |
1661 | { | |
1662 | BUG_ON(!host); | |
1663 | BUG_ON(!host->card); | |
1664 | ||
1665 | mmc_remove_card(host->card); | |
1666 | host->card = NULL; | |
1667 | } | |
1668 | ||
d3049504 AH |
1669 | /* |
1670 | * Card detection - card is alive. | |
1671 | */ | |
1672 | static int mmc_alive(struct mmc_host *host) | |
1673 | { | |
1674 | return mmc_send_status(host->card, NULL); | |
1675 | } | |
1676 | ||
6abaa0c9 PO |
1677 | /* |
1678 | * Card detection callback from host. | |
1679 | */ | |
1680 | static void mmc_detect(struct mmc_host *host) | |
1681 | { | |
1682 | int err; | |
1683 | ||
1684 | BUG_ON(!host); | |
1685 | BUG_ON(!host->card); | |
1686 | ||
e94cfef6 | 1687 | mmc_get_card(host->card); |
6abaa0c9 PO |
1688 | |
1689 | /* | |
1690 | * Just check if our card has been removed. | |
1691 | */ | |
d3049504 | 1692 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1693 | |
e94cfef6 | 1694 | mmc_put_card(host->card); |
6abaa0c9 | 1695 | |
17b0429d | 1696 | if (err) { |
4101c16a | 1697 | mmc_remove(host); |
6abaa0c9 PO |
1698 | |
1699 | mmc_claim_host(host); | |
1700 | mmc_detach_bus(host); | |
7f7e4129 | 1701 | mmc_power_off(host); |
6abaa0c9 PO |
1702 | mmc_release_host(host); |
1703 | } | |
1704 | } | |
1705 | ||
03d071fc | 1706 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1707 | { |
c3805467 | 1708 | int err = 0; |
03d071fc UH |
1709 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1710 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1711 | |
6abaa0c9 PO |
1712 | BUG_ON(!host); |
1713 | BUG_ON(!host->card); | |
7ea239d9 | 1714 | |
6abaa0c9 | 1715 | mmc_claim_host(host); |
881d926d | 1716 | |
9ec775f7 UH |
1717 | if (mmc_card_suspended(host->card)) |
1718 | goto out; | |
1719 | ||
39b9431b UH |
1720 | if (mmc_card_doing_bkops(host->card)) { |
1721 | err = mmc_stop_bkops(host->card); | |
1722 | if (err) | |
1723 | goto out; | |
1724 | } | |
1725 | ||
10e5d965 | 1726 | err = mmc_flush_cache(host->card); |
881d926d ME |
1727 | if (err) |
1728 | goto out; | |
1729 | ||
43235679 | 1730 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1731 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1732 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1733 | else if (mmc_can_sleep(host->card)) |
1734 | err = mmc_sleep(host); | |
e6c08586 | 1735 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1736 | err = mmc_deselect_cards(host); |
95cdfb72 | 1737 | |
9ec775f7 | 1738 | if (!err) { |
74590263 | 1739 | mmc_power_off(host); |
9ec775f7 UH |
1740 | mmc_card_set_suspended(host->card); |
1741 | } | |
881d926d ME |
1742 | out: |
1743 | mmc_release_host(host); | |
c3805467 | 1744 | return err; |
6abaa0c9 | 1745 | } |
7ea239d9 | 1746 | |
03d071fc | 1747 | /* |
0cb403a2 | 1748 | * Suspend callback |
03d071fc UH |
1749 | */ |
1750 | static int mmc_suspend(struct mmc_host *host) | |
1751 | { | |
0cb403a2 UH |
1752 | int err; |
1753 | ||
1754 | err = _mmc_suspend(host, true); | |
1755 | if (!err) { | |
1756 | pm_runtime_disable(&host->card->dev); | |
1757 | pm_runtime_set_suspended(&host->card->dev); | |
1758 | } | |
1759 | ||
1760 | return err; | |
03d071fc UH |
1761 | } |
1762 | ||
6abaa0c9 | 1763 | /* |
6abaa0c9 PO |
1764 | * This function tries to determine if the same card is still present |
1765 | * and, if so, restore all state to it. | |
1766 | */ | |
0cb403a2 | 1767 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1768 | { |
9ec775f7 | 1769 | int err = 0; |
6abaa0c9 PO |
1770 | |
1771 | BUG_ON(!host); | |
1772 | BUG_ON(!host->card); | |
1773 | ||
1774 | mmc_claim_host(host); | |
9ec775f7 UH |
1775 | |
1776 | if (!mmc_card_suspended(host->card)) | |
1777 | goto out; | |
1778 | ||
69041150 | 1779 | mmc_power_up(host, host->card->ocr); |
69041150 | 1780 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1781 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1782 | |
9ec775f7 UH |
1783 | out: |
1784 | mmc_release_host(host); | |
95cdfb72 | 1785 | return err; |
6abaa0c9 PO |
1786 | } |
1787 | ||
9ec775f7 UH |
1788 | /* |
1789 | * Shutdown callback | |
1790 | */ | |
1791 | static int mmc_shutdown(struct mmc_host *host) | |
1792 | { | |
1793 | int err = 0; | |
1794 | ||
1795 | /* | |
1796 | * In a specific case for poweroff notify, we need to resume the card | |
1797 | * before we can shutdown it properly. | |
1798 | */ | |
1799 | if (mmc_can_poweroff_notify(host->card) && | |
1800 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1801 | err = _mmc_resume(host); |
9ec775f7 UH |
1802 | |
1803 | if (!err) | |
1804 | err = _mmc_suspend(host, false); | |
1805 | ||
1806 | return err; | |
1807 | } | |
c4d770d7 | 1808 | |
0cb403a2 UH |
1809 | /* |
1810 | * Callback for resume. | |
1811 | */ | |
1812 | static int mmc_resume(struct mmc_host *host) | |
1813 | { | |
4d223782 | 1814 | int err = 0; |
0cb403a2 | 1815 | |
4d223782 UH |
1816 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1817 | err = _mmc_resume(host); | |
1818 | pm_runtime_set_active(&host->card->dev); | |
1819 | pm_runtime_mark_last_busy(&host->card->dev); | |
1820 | } | |
0cb403a2 UH |
1821 | pm_runtime_enable(&host->card->dev); |
1822 | ||
1823 | return err; | |
1824 | } | |
1825 | ||
c4d770d7 UH |
1826 | /* |
1827 | * Callback for runtime_suspend. | |
1828 | */ | |
1829 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1830 | { | |
1831 | int err; | |
1832 | ||
1833 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1834 | return 0; | |
1835 | ||
0cb403a2 | 1836 | err = _mmc_suspend(host, true); |
0cc81a8c | 1837 | if (err) |
c4d770d7 UH |
1838 | pr_err("%s: error %d doing aggessive suspend\n", |
1839 | mmc_hostname(host), err); | |
c4d770d7 | 1840 | |
c4d770d7 UH |
1841 | return err; |
1842 | } | |
1843 | ||
1844 | /* | |
1845 | * Callback for runtime_resume. | |
1846 | */ | |
1847 | static int mmc_runtime_resume(struct mmc_host *host) | |
1848 | { | |
1849 | int err; | |
1850 | ||
4d223782 | 1851 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1852 | return 0; |
1853 | ||
0cb403a2 | 1854 | err = _mmc_resume(host); |
c4d770d7 UH |
1855 | if (err) |
1856 | pr_err("%s: error %d doing aggessive resume\n", | |
1857 | mmc_hostname(host), err); | |
1858 | ||
c4d770d7 UH |
1859 | return 0; |
1860 | } | |
1861 | ||
12ae637f | 1862 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1863 | { |
12ae637f OBC |
1864 | int ret; |
1865 | ||
eae1aeee | 1866 | mmc_claim_host(host); |
69041150 | 1867 | ret = mmc_init_card(host, host->card->ocr, host->card); |
eae1aeee | 1868 | mmc_release_host(host); |
12ae637f OBC |
1869 | |
1870 | return ret; | |
eae1aeee AH |
1871 | } |
1872 | ||
6abaa0c9 PO |
1873 | static const struct mmc_bus_ops mmc_ops = { |
1874 | .remove = mmc_remove, | |
1875 | .detect = mmc_detect, | |
1876 | .suspend = mmc_suspend, | |
1877 | .resume = mmc_resume, | |
c4d770d7 UH |
1878 | .runtime_suspend = mmc_runtime_suspend, |
1879 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1880 | .power_restore = mmc_power_restore, |
d3049504 | 1881 | .alive = mmc_alive, |
486fdbbc | 1882 | .shutdown = mmc_shutdown, |
6abaa0c9 PO |
1883 | }; |
1884 | ||
1885 | /* | |
1886 | * Starting point for MMC card init. | |
1887 | */ | |
807e8e40 | 1888 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1889 | { |
1890 | int err; | |
69041150 | 1891 | u32 ocr, rocr; |
6abaa0c9 PO |
1892 | |
1893 | BUG_ON(!host); | |
d84075c8 | 1894 | WARN_ON(!host->claimed); |
6abaa0c9 | 1895 | |
44669034 SNX |
1896 | /* Set correct bus mode for MMC before attempting attach */ |
1897 | if (!mmc_host_is_spi(host)) | |
1898 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1899 | ||
807e8e40 AR |
1900 | err = mmc_send_op_cond(host, 0, &ocr); |
1901 | if (err) | |
1902 | return err; | |
1903 | ||
2501c917 | 1904 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
1905 | if (host->ocr_avail_mmc) |
1906 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1907 | |
af517150 DB |
1908 | /* |
1909 | * We need to get OCR a different way for SPI. | |
1910 | */ | |
1911 | if (mmc_host_is_spi(host)) { | |
1912 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1913 | if (err) | |
1914 | goto err; | |
1915 | } | |
1916 | ||
69041150 | 1917 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
1918 | |
1919 | /* | |
1920 | * Can we support the voltage of the card? | |
1921 | */ | |
69041150 | 1922 | if (!rocr) { |
109b5bed | 1923 | err = -EINVAL; |
6abaa0c9 | 1924 | goto err; |
109b5bed | 1925 | } |
6abaa0c9 PO |
1926 | |
1927 | /* | |
1928 | * Detect and init the card. | |
1929 | */ | |
69041150 | 1930 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 1931 | if (err) |
6abaa0c9 PO |
1932 | goto err; |
1933 | ||
1934 | mmc_release_host(host); | |
4101c16a | 1935 | err = mmc_add_card(host->card); |
807e8e40 | 1936 | mmc_claim_host(host); |
7ea239d9 | 1937 | if (err) |
2986d0bf | 1938 | goto remove_card; |
7ea239d9 PO |
1939 | |
1940 | return 0; | |
1941 | ||
2986d0bf | 1942 | remove_card: |
807e8e40 | 1943 | mmc_release_host(host); |
6abaa0c9 | 1944 | mmc_remove_card(host->card); |
2986d0bf | 1945 | mmc_claim_host(host); |
807e8e40 | 1946 | host->card = NULL; |
7ea239d9 PO |
1947 | err: |
1948 | mmc_detach_bus(host); | |
7ea239d9 | 1949 | |
a3c76eb9 | 1950 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1951 | mmc_hostname(host), err); |
1952 | ||
adf66a0d | 1953 | return err; |
7ea239d9 | 1954 | } |