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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> | |
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); | |
165 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
166 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
167 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 168 | |
dfe86cba AH |
169 | if (csd->write_blkbits >= 9) { |
170 | a = UNSTUFF_BITS(resp, 42, 5); | |
171 | b = UNSTUFF_BITS(resp, 37, 5); | |
172 | csd->erase_size = (a + 1) * (b + 1); | |
173 | csd->erase_size <<= csd->write_blkbits - 9; | |
174 | } | |
175 | ||
bd766312 | 176 | return 0; |
7ea239d9 PO |
177 | } |
178 | ||
179 | /* | |
08ee80cc | 180 | * Read extended CSD. |
7ea239d9 | 181 | */ |
08ee80cc | 182 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
183 | { |
184 | int err; | |
185 | u8 *ext_csd; | |
186 | ||
187 | BUG_ON(!card); | |
08ee80cc PR |
188 | BUG_ON(!new_ext_csd); |
189 | ||
190 | *new_ext_csd = NULL; | |
7ea239d9 | 191 | |
7ea239d9 | 192 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 193 | return 0; |
7ea239d9 PO |
194 | |
195 | /* | |
196 | * As the ext_csd is so large and mostly unused, we don't store the | |
197 | * raw block in mmc_card. | |
198 | */ | |
199 | ext_csd = kmalloc(512, GFP_KERNEL); | |
200 | if (!ext_csd) { | |
a3c76eb9 | 201 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 202 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 203 | return -ENOMEM; |
7ea239d9 PO |
204 | } |
205 | ||
206 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 207 | if (err) { |
08ee80cc PR |
208 | kfree(ext_csd); |
209 | *new_ext_csd = NULL; | |
210 | ||
d08ebedd WM |
211 | /* If the host or the card can't do the switch, |
212 | * fail more gracefully. */ | |
213 | if ((err != -EINVAL) | |
214 | && (err != -ENOSYS) | |
215 | && (err != -EFAULT)) | |
08ee80cc | 216 | return err; |
adf66a0d | 217 | |
7ea239d9 PO |
218 | /* |
219 | * High capacity cards should have this "magic" size | |
220 | * stored in their CSD. | |
221 | */ | |
222 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 223 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
224 | "on a possible high capacity card. " |
225 | "Card will be ignored.\n", | |
226 | mmc_hostname(card->host)); | |
227 | } else { | |
a3c76eb9 | 228 | pr_warning("%s: unable to read " |
7ea239d9 PO |
229 | "EXT_CSD, performance might " |
230 | "suffer.\n", | |
231 | mmc_hostname(card->host)); | |
17b0429d | 232 | err = 0; |
7ea239d9 | 233 | } |
08ee80cc PR |
234 | } else |
235 | *new_ext_csd = ext_csd; | |
adf66a0d | 236 | |
08ee80cc PR |
237 | return err; |
238 | } | |
239 | ||
96cf5f02 SJ |
240 | static void mmc_select_card_type(struct mmc_card *card) |
241 | { | |
242 | struct mmc_host *host = card->host; | |
243 | u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; | |
5f1a4dd0 | 244 | u32 caps = host->caps, caps2 = host->caps2; |
96cf5f02 SJ |
245 | unsigned int hs_max_dtr = 0; |
246 | ||
247 | if (card_type & EXT_CSD_CARD_TYPE_26) | |
248 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; | |
249 | ||
250 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
251 | card_type & EXT_CSD_CARD_TYPE_52) | |
252 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; | |
253 | ||
254 | if ((caps & MMC_CAP_1_8V_DDR && | |
255 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || | |
256 | (caps & MMC_CAP_1_2V_DDR && | |
257 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) | |
258 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
259 | ||
260 | if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && | |
261 | card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || | |
262 | (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
263 | card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) | |
264 | hs_max_dtr = MMC_HS200_MAX_DTR; | |
265 | ||
266 | card->ext_csd.hs_max_dtr = hs_max_dtr; | |
267 | card->ext_csd.card_type = card_type; | |
268 | } | |
269 | ||
08ee80cc PR |
270 | /* |
271 | * Decode extended CSD. | |
272 | */ | |
273 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
274 | { | |
e0c368d5 NJ |
275 | int err = 0, idx; |
276 | unsigned int part_size; | |
277 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
278 | |
279 | BUG_ON(!card); | |
280 | ||
281 | if (!ext_csd) | |
282 | return 0; | |
7ea239d9 | 283 | |
6da24b78 | 284 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 285 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 286 | if (card->csd.structure == 3) { |
f39b2dd9 | 287 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 288 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 289 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 290 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
291 | err = -EINVAL; |
292 | goto out; | |
293 | } | |
294 | } | |
295 | ||
b1ebe384 | 296 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
6636bad8 | 297 | if (card->ext_csd.rev > 7) { |
a3c76eb9 | 298 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 299 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
300 | err = -EINVAL; |
301 | goto out; | |
d7604d76 PO |
302 | } |
303 | ||
f39b2dd9 PR |
304 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
305 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
306 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
307 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 308 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
309 | card->ext_csd.sectors = |
310 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
311 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
312 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
313 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
314 | |
315 | /* Cards with density > 2GiB are sector addressed */ | |
316 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
317 | mmc_card_set_blockaddr(card); |
318 | } | |
96cf5f02 | 319 | |
f39b2dd9 | 320 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 321 | mmc_select_card_type(card); |
7ea239d9 | 322 | |
f39b2dd9 PR |
323 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
324 | card->ext_csd.raw_erase_timeout_mult = | |
325 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
326 | card->ext_csd.raw_hc_erase_grp_size = | |
327 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
328 | if (card->ext_csd.rev >= 3) { |
329 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
330 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
331 | ||
332 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
333 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
334 | |
335 | /* Sleep / awake timeout in 100ns units */ | |
336 | if (sa_shift > 0 && sa_shift <= 0x17) | |
337 | card->ext_csd.sa_timeout = | |
338 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
339 | card->ext_csd.erase_group_def = |
340 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
341 | card->ext_csd.hc_erase_timeout = 300 * | |
342 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
343 | card->ext_csd.hc_erase_size = | |
344 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
345 | |
346 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
347 | |
348 | /* | |
349 | * There are two boot regions of equal size, defined in | |
350 | * multiples of 128K. | |
351 | */ | |
e0c368d5 NJ |
352 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
353 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
354 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
355 | mmc_part_add(card, part_size, | |
356 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
357 | "boot%d", idx, true, |
358 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
359 | } |
360 | } | |
dfe86cba AH |
361 | } |
362 | ||
f39b2dd9 | 363 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 364 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
365 | card->ext_csd.raw_sec_trim_mult = |
366 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
367 | card->ext_csd.raw_sec_erase_mult = | |
368 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
369 | card->ext_csd.raw_sec_feature_support = | |
370 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
371 | card->ext_csd.raw_trim_mult = | |
372 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 373 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 374 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
375 | /* |
376 | * Enhanced area feature support -- check whether the eMMC | |
377 | * card has the Enhanced area enabled. If so, export enhanced | |
378 | * area offset and size to user by adding sysfs interface. | |
379 | */ | |
380 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
f39b2dd9 | 381 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 382 | hc_erase_grp_sz = |
709de99d | 383 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 384 | hc_wp_grp_sz = |
709de99d CD |
385 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
386 | ||
387 | card->ext_csd.enhanced_area_en = 1; | |
388 | /* | |
389 | * calculate the enhanced data area offset, in bytes | |
390 | */ | |
391 | card->ext_csd.enhanced_area_offset = | |
392 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
393 | (ext_csd[137] << 8) + ext_csd[136]; | |
394 | if (mmc_card_blockaddr(card)) | |
395 | card->ext_csd.enhanced_area_offset <<= 9; | |
396 | /* | |
397 | * calculate the enhanced data area size, in kilobytes | |
398 | */ | |
399 | card->ext_csd.enhanced_area_size = | |
400 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
401 | ext_csd[140]; | |
402 | card->ext_csd.enhanced_area_size *= | |
403 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
404 | card->ext_csd.enhanced_area_size <<= 9; | |
405 | } else { | |
406 | /* | |
407 | * If the enhanced area is not enabled, disable these | |
408 | * device attributes. | |
409 | */ | |
410 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
411 | card->ext_csd.enhanced_area_size = -EINVAL; | |
412 | } | |
e0c368d5 NJ |
413 | |
414 | /* | |
415 | * General purpose partition feature support -- | |
416 | * If ext_csd has the size of general purpose partitions, | |
417 | * set size, part_cfg, partition name in mmc_part. | |
418 | */ | |
419 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
420 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
421 | if (card->ext_csd.enhanced_area_en != 1) { | |
422 | hc_erase_grp_sz = | |
423 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
424 | hc_wp_grp_sz = | |
425 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
426 | ||
427 | card->ext_csd.enhanced_area_en = 1; | |
428 | } | |
429 | ||
430 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
431 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
432 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
433 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
434 | continue; | |
435 | part_size = | |
436 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
437 | << 16) + | |
438 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
439 | << 8) + | |
440 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
441 | part_size *= (size_t)(hc_erase_grp_sz * | |
442 | hc_wp_grp_sz); | |
443 | mmc_part_add(card, part_size << 19, | |
444 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
add710ea JR |
445 | "gp%d", idx, false, |
446 | MMC_BLK_DATA_AREA_GP); | |
e0c368d5 NJ |
447 | } |
448 | } | |
dfe86cba AH |
449 | card->ext_csd.sec_trim_mult = |
450 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
451 | card->ext_csd.sec_erase_mult = | |
452 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
453 | card->ext_csd.sec_feature_support = | |
454 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
455 | card->ext_csd.trim_timeout = 300 * | |
456 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
457 | |
458 | /* | |
459 | * Note that the call to mmc_part_add above defaults to read | |
460 | * only. If this default assumption is changed, the call must | |
461 | * take into account the value of boot_locked below. | |
462 | */ | |
463 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
464 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
465 | |
466 | /* Save power class values */ | |
467 | card->ext_csd.raw_pwr_cl_52_195 = | |
468 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
469 | card->ext_csd.raw_pwr_cl_26_195 = | |
470 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
471 | card->ext_csd.raw_pwr_cl_52_360 = | |
472 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
473 | card->ext_csd.raw_pwr_cl_26_360 = | |
474 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
475 | card->ext_csd.raw_pwr_cl_200_195 = | |
476 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
477 | card->ext_csd.raw_pwr_cl_200_360 = | |
478 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
479 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
480 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
481 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
482 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
b1ebe384 JL |
483 | } |
484 | ||
b2499518 | 485 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
486 | /* Adjust production date as per JEDEC JESD84-B451 */ |
487 | if (card->cid.year < 2010) | |
488 | card->cid.year += 16; | |
489 | ||
950d56ac JC |
490 | /* check whether the eMMC card supports BKOPS */ |
491 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
492 | card->ext_csd.bkops = 1; | |
493 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
494 | card->ext_csd.raw_bkops_status = | |
495 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
496 | if (!card->ext_csd.bkops_en) | |
497 | pr_info("%s: BKOPS_EN bit is not set\n", | |
498 | mmc_hostname(card->host)); | |
499 | } | |
500 | ||
eb0d8f13 JC |
501 | /* check whether the eMMC card supports HPI */ |
502 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
503 | card->ext_csd.hpi = 1; | |
504 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
505 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
506 | else | |
507 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
508 | /* | |
509 | * Indicate the maximum timeout to close | |
510 | * a command interrupted by HPI | |
511 | */ | |
512 | card->ext_csd.out_of_int_time = | |
513 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
514 | } | |
515 | ||
f4c5522b | 516 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 517 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
518 | |
519 | /* | |
520 | * RPMB regions are defined in multiples of 128K. | |
521 | */ | |
522 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 523 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
524 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
525 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
526 | "rpmb", 0, false, | |
527 | MMC_BLK_DATA_AREA_RPMB); | |
528 | } | |
b2499518 | 529 | } |
f4c5522b | 530 | |
5238acbe | 531 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
532 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
533 | card->erased_byte = 0xFF; | |
534 | else | |
535 | card->erased_byte = 0x0; | |
536 | ||
336c716a | 537 | /* eMMC v4.5 or later */ |
bec8726a | 538 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
539 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
540 | ||
b23cf0bd SJ |
541 | card->ext_csd.generic_cmd6_time = 10 * |
542 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
543 | card->ext_csd.power_off_longtime = 10 * |
544 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 545 | |
336c716a SJ |
546 | card->ext_csd.cache_size = |
547 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
548 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
549 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
550 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
551 | |
552 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
553 | card->ext_csd.data_sector_size = 4096; | |
554 | else | |
555 | card->ext_csd.data_sector_size = 512; | |
556 | ||
557 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
558 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
559 | card->ext_csd.data_tag_unit_size = | |
560 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
561 | (card->ext_csd.data_sector_size); | |
562 | } else { | |
563 | card->ext_csd.data_tag_unit_size = 0; | |
564 | } | |
abd9ac14 SJ |
565 | |
566 | card->ext_csd.max_packed_writes = | |
567 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
568 | card->ext_csd.max_packed_reads = | |
569 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
570 | } else { |
571 | card->ext_csd.data_sector_size = 512; | |
336c716a | 572 | } |
881d1c25 | 573 | |
7ea239d9 | 574 | out: |
08ee80cc PR |
575 | return err; |
576 | } | |
577 | ||
578 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
579 | { | |
7ea239d9 | 580 | kfree(ext_csd); |
08ee80cc PR |
581 | } |
582 | ||
7ea239d9 | 583 | |
f39b2dd9 | 584 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
585 | { |
586 | u8 *bw_ext_csd; | |
587 | int err; | |
588 | ||
f39b2dd9 PR |
589 | if (bus_width == MMC_BUS_WIDTH_1) |
590 | return 0; | |
591 | ||
08ee80cc | 592 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 593 | |
f39b2dd9 | 594 | if (err || bw_ext_csd == NULL) { |
f6f44590 | 595 | err = -EINVAL; |
08ee80cc PR |
596 | goto out; |
597 | } | |
598 | ||
08ee80cc | 599 | /* only compare read only fields */ |
dd13b4ed | 600 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 601 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 602 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 603 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 604 | (card->ext_csd.rev == |
08ee80cc | 605 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 606 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 607 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 608 | (card->ext_csd.raw_card_type == |
08ee80cc | 609 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 610 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 611 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 612 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 613 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 614 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 615 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 616 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 617 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 618 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 619 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 620 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 621 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 622 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 623 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 624 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 625 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
626 | (card->ext_csd.raw_sectors[0] == |
627 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
628 | (card->ext_csd.raw_sectors[1] == | |
629 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
630 | (card->ext_csd.raw_sectors[2] == | |
631 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
632 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
633 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
634 | (card->ext_csd.raw_pwr_cl_52_195 == | |
635 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
636 | (card->ext_csd.raw_pwr_cl_26_195 == | |
637 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
638 | (card->ext_csd.raw_pwr_cl_52_360 == | |
639 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
640 | (card->ext_csd.raw_pwr_cl_26_360 == | |
641 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
642 | (card->ext_csd.raw_pwr_cl_200_195 == | |
643 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
644 | (card->ext_csd.raw_pwr_cl_200_360 == | |
645 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
646 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
647 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
648 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
649 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); | |
08ee80cc PR |
650 | if (err) |
651 | err = -EINVAL; | |
652 | ||
653 | out: | |
654 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
655 | return err; |
656 | } | |
657 | ||
51ec92e2 PO |
658 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
659 | card->raw_cid[2], card->raw_cid[3]); | |
660 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
661 | card->raw_csd[2], card->raw_csd[3]); | |
662 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
663 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
664 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
665 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
666 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
667 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
668 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
669 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 670 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 671 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
672 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
673 | card->ext_csd.enhanced_area_offset); | |
674 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
675 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
676 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 PO |
677 | |
678 | static struct attribute *mmc_std_attrs[] = { | |
679 | &dev_attr_cid.attr, | |
680 | &dev_attr_csd.attr, | |
681 | &dev_attr_date.attr, | |
dfe86cba AH |
682 | &dev_attr_erase_size.attr, |
683 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
684 | &dev_attr_fwrev.attr, |
685 | &dev_attr_hwrev.attr, | |
686 | &dev_attr_manfid.attr, | |
687 | &dev_attr_name.attr, | |
688 | &dev_attr_oemid.attr, | |
51e7e8b6 | 689 | &dev_attr_prv.attr, |
51ec92e2 | 690 | &dev_attr_serial.attr, |
709de99d CD |
691 | &dev_attr_enhanced_area_offset.attr, |
692 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
693 | &dev_attr_raw_rpmb_size_mult.attr, |
694 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
695 | NULL, |
696 | }; | |
697 | ||
698 | static struct attribute_group mmc_std_attr_group = { | |
699 | .attrs = mmc_std_attrs, | |
700 | }; | |
701 | ||
a4dbd674 | 702 | static const struct attribute_group *mmc_attr_groups[] = { |
51ec92e2 PO |
703 | &mmc_std_attr_group, |
704 | NULL, | |
705 | }; | |
706 | ||
707 | static struct device_type mmc_type = { | |
708 | .groups = mmc_attr_groups, | |
709 | }; | |
710 | ||
b87d8dbf G |
711 | /* |
712 | * Select the PowerClass for the current bus width | |
713 | * If power class is defined for 4/8 bit bus in the | |
714 | * extended CSD register, select it by executing the | |
715 | * mmc_switch command. | |
716 | */ | |
717 | static int mmc_select_powerclass(struct mmc_card *card, | |
60443712 | 718 | unsigned int bus_width) |
b87d8dbf G |
719 | { |
720 | int err = 0; | |
60443712 | 721 | unsigned int pwrclass_val = 0; |
b87d8dbf G |
722 | struct mmc_host *host; |
723 | ||
724 | BUG_ON(!card); | |
725 | ||
726 | host = card->host; | |
727 | BUG_ON(!host); | |
728 | ||
b87d8dbf G |
729 | /* Power class selection is supported for versions >= 4.0 */ |
730 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
731 | return 0; | |
732 | ||
733 | /* Power class values are defined only for 4/8 bit bus */ | |
734 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
735 | return 0; | |
736 | ||
737 | switch (1 << host->ios.vdd) { | |
738 | case MMC_VDD_165_195: | |
739 | if (host->ios.clock <= 26000000) | |
60443712 | 740 | pwrclass_val = card->ext_csd.raw_pwr_cl_26_195; |
b87d8dbf | 741 | else if (host->ios.clock <= 52000000) |
60443712 FS |
742 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
743 | card->ext_csd.raw_pwr_cl_52_195 : | |
744 | card->ext_csd.raw_pwr_cl_ddr_52_195; | |
b87d8dbf | 745 | else if (host->ios.clock <= 200000000) |
60443712 | 746 | pwrclass_val = card->ext_csd.raw_pwr_cl_200_195; |
b87d8dbf | 747 | break; |
93fc5a47 SJ |
748 | case MMC_VDD_27_28: |
749 | case MMC_VDD_28_29: | |
750 | case MMC_VDD_29_30: | |
751 | case MMC_VDD_30_31: | |
752 | case MMC_VDD_31_32: | |
b87d8dbf G |
753 | case MMC_VDD_32_33: |
754 | case MMC_VDD_33_34: | |
755 | case MMC_VDD_34_35: | |
756 | case MMC_VDD_35_36: | |
757 | if (host->ios.clock <= 26000000) | |
60443712 | 758 | pwrclass_val = card->ext_csd.raw_pwr_cl_26_360; |
b87d8dbf | 759 | else if (host->ios.clock <= 52000000) |
60443712 FS |
760 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
761 | card->ext_csd.raw_pwr_cl_52_360 : | |
762 | card->ext_csd.raw_pwr_cl_ddr_52_360; | |
b87d8dbf | 763 | else if (host->ios.clock <= 200000000) |
60443712 | 764 | pwrclass_val = card->ext_csd.raw_pwr_cl_200_360; |
b87d8dbf G |
765 | break; |
766 | default: | |
767 | pr_warning("%s: Voltage range not supported " | |
768 | "for power class.\n", mmc_hostname(host)); | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
b87d8dbf G |
772 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
773 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
774 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
775 | else | |
776 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
777 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
778 | ||
779 | /* If the power class is different from the default value */ | |
780 | if (pwrclass_val > 0) { | |
781 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
782 | EXT_CSD_POWER_CLASS, | |
783 | pwrclass_val, | |
71fe3eb0 | 784 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
785 | } |
786 | ||
787 | return err; | |
788 | } | |
789 | ||
a4924c71 G |
790 | /* |
791 | * Selects the desired buswidth and switch to the HS200 mode | |
792 | * if bus width set without error | |
793 | */ | |
794 | static int mmc_select_hs200(struct mmc_card *card) | |
795 | { | |
10942aa4 | 796 | int idx, err = -EINVAL; |
a4924c71 G |
797 | struct mmc_host *host; |
798 | static unsigned ext_csd_bits[] = { | |
799 | EXT_CSD_BUS_WIDTH_4, | |
800 | EXT_CSD_BUS_WIDTH_8, | |
801 | }; | |
802 | static unsigned bus_widths[] = { | |
803 | MMC_BUS_WIDTH_4, | |
804 | MMC_BUS_WIDTH_8, | |
805 | }; | |
806 | ||
807 | BUG_ON(!card); | |
808 | ||
809 | host = card->host; | |
810 | ||
811 | if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && | |
10942aa4 | 812 | host->caps2 & MMC_CAP2_HS200_1_2V_SDR) |
567c8903 | 813 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
10942aa4 SJ |
814 | |
815 | if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && | |
816 | host->caps2 & MMC_CAP2_HS200_1_8V_SDR) | |
567c8903 | 817 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
a4924c71 G |
818 | |
819 | /* If fails try again during next card power cycle */ | |
820 | if (err) | |
821 | goto err; | |
822 | ||
823 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; | |
824 | ||
825 | /* | |
826 | * Unlike SD, MMC cards dont have a configuration register to notify | |
827 | * supported bus width. So bus test command should be run to identify | |
828 | * the supported bus width or compare the ext csd values of current | |
829 | * bus width and ext csd values of 1 bit mode read earlier. | |
830 | */ | |
831 | for (; idx >= 0; idx--) { | |
832 | ||
833 | /* | |
834 | * Host is capable of 8bit transfer, then switch | |
835 | * the device to work in 8bit transfer mode. If the | |
836 | * mmc switch command returns error then switch to | |
837 | * 4bit transfer mode. On success set the corresponding | |
838 | * bus width on the host. | |
839 | */ | |
840 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
841 | EXT_CSD_BUS_WIDTH, | |
842 | ext_csd_bits[idx], | |
843 | card->ext_csd.generic_cmd6_time); | |
844 | if (err) | |
845 | continue; | |
846 | ||
847 | mmc_set_bus_width(card->host, bus_widths[idx]); | |
848 | ||
849 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
850 | err = mmc_compare_ext_csds(card, bus_widths[idx]); | |
851 | else | |
852 | err = mmc_bus_test(card, bus_widths[idx]); | |
853 | if (!err) | |
854 | break; | |
855 | } | |
856 | ||
857 | /* switch to HS200 mode if bus width set successfully */ | |
858 | if (!err) | |
4509f847 | 859 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
57de31f6 UH |
860 | EXT_CSD_HS_TIMING, 2, |
861 | card->ext_csd.generic_cmd6_time, | |
862 | true, true, true); | |
a4924c71 G |
863 | err: |
864 | return err; | |
865 | } | |
866 | ||
7ea239d9 | 867 | /* |
6abaa0c9 PO |
868 | * Handle the detection and initialisation of a card. |
869 | * | |
8769392b | 870 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 871 | * we're trying to reinitialise. |
7ea239d9 | 872 | */ |
8c75deae | 873 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 874 | struct mmc_card *oldcard) |
7ea239d9 PO |
875 | { |
876 | struct mmc_card *card; | |
25d5c699 | 877 | int err, ddr = 0; |
7ea239d9 PO |
878 | u32 cid[4]; |
879 | unsigned int max_dtr; | |
b676f039 | 880 | u32 rocr; |
08ee80cc | 881 | u8 *ext_csd = NULL; |
7ea239d9 PO |
882 | |
883 | BUG_ON(!host); | |
d84075c8 | 884 | WARN_ON(!host->claimed); |
7ea239d9 | 885 | |
44669034 SNX |
886 | /* Set correct bus mode for MMC before attempting init */ |
887 | if (!mmc_host_is_spi(host)) | |
888 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
889 | ||
7ea239d9 PO |
890 | /* |
891 | * Since we're changing the OCR value, we seem to | |
892 | * need to tell some cards to go back to the idle | |
893 | * state. We wait 1ms to give cards time to | |
894 | * respond. | |
c3805467 | 895 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
896 | */ |
897 | mmc_go_idle(host); | |
898 | ||
899 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 900 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 901 | if (err) |
6abaa0c9 | 902 | goto err; |
7ea239d9 | 903 | |
af517150 DB |
904 | /* |
905 | * For SPI, enable CRC as appropriate. | |
906 | */ | |
907 | if (mmc_host_is_spi(host)) { | |
908 | err = mmc_spi_set_crc(host, use_spi_crc); | |
909 | if (err) | |
910 | goto err; | |
911 | } | |
912 | ||
7ea239d9 PO |
913 | /* |
914 | * Fetch CID from card. | |
915 | */ | |
af517150 DB |
916 | if (mmc_host_is_spi(host)) |
917 | err = mmc_send_cid(host, cid); | |
918 | else | |
919 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 920 | if (err) |
7ea239d9 PO |
921 | goto err; |
922 | ||
6abaa0c9 | 923 | if (oldcard) { |
adf66a0d PO |
924 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
925 | err = -ENOENT; | |
6abaa0c9 | 926 | goto err; |
adf66a0d | 927 | } |
6abaa0c9 PO |
928 | |
929 | card = oldcard; | |
930 | } else { | |
931 | /* | |
932 | * Allocate card structure. | |
933 | */ | |
51ec92e2 | 934 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
935 | if (IS_ERR(card)) { |
936 | err = PTR_ERR(card); | |
6abaa0c9 | 937 | goto err; |
adf66a0d | 938 | } |
7ea239d9 | 939 | |
69041150 | 940 | card->ocr = ocr; |
6abaa0c9 PO |
941 | card->type = MMC_TYPE_MMC; |
942 | card->rca = 1; | |
943 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
944 | } | |
7ea239d9 PO |
945 | |
946 | /* | |
af517150 | 947 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 948 | */ |
af517150 DB |
949 | if (!mmc_host_is_spi(host)) { |
950 | err = mmc_set_relative_addr(card); | |
951 | if (err) | |
952 | goto free_card; | |
7ea239d9 | 953 | |
af517150 DB |
954 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
955 | } | |
7ea239d9 | 956 | |
6abaa0c9 PO |
957 | if (!oldcard) { |
958 | /* | |
959 | * Fetch CSD from card. | |
960 | */ | |
961 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 962 | if (err) |
6abaa0c9 | 963 | goto free_card; |
7ea239d9 | 964 | |
bd766312 | 965 | err = mmc_decode_csd(card); |
adf66a0d | 966 | if (err) |
bd766312 PO |
967 | goto free_card; |
968 | err = mmc_decode_cid(card); | |
adf66a0d | 969 | if (err) |
bd766312 | 970 | goto free_card; |
6abaa0c9 | 971 | } |
7ea239d9 PO |
972 | |
973 | /* | |
89a73cf5 | 974 | * Select card, as all following commands rely on that. |
7ea239d9 | 975 | */ |
af517150 DB |
976 | if (!mmc_host_is_spi(host)) { |
977 | err = mmc_select_card(card); | |
978 | if (err) | |
979 | goto free_card; | |
980 | } | |
7ea239d9 | 981 | |
6abaa0c9 PO |
982 | if (!oldcard) { |
983 | /* | |
af517150 | 984 | * Fetch and process extended CSD. |
6abaa0c9 | 985 | */ |
08ee80cc PR |
986 | |
987 | err = mmc_get_ext_csd(card, &ext_csd); | |
988 | if (err) | |
989 | goto free_card; | |
990 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 991 | if (err) |
6abaa0c9 | 992 | goto free_card; |
b676f039 PR |
993 | |
994 | /* If doing byte addressing, check if required to do sector | |
995 | * addressing. Handle the case of <2GB cards needing sector | |
996 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
997 | * ocr register has bit 30 set for sector addressing. | |
998 | */ | |
999 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1000 | mmc_card_set_blockaddr(card); | |
1001 | ||
dfe86cba AH |
1002 | /* Erase size depends on CSD and Extended CSD */ |
1003 | mmc_set_erase_size(card); | |
6abaa0c9 | 1004 | } |
7ea239d9 | 1005 | |
709de99d CD |
1006 | /* |
1007 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1008 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1009 | */ |
83bb24aa AH |
1010 | if (card->ext_csd.enhanced_area_en || |
1011 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { | |
709de99d | 1012 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1013 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1014 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1015 | |
1016 | if (err && err != -EBADMSG) | |
1017 | goto free_card; | |
1018 | ||
1019 | if (err) { | |
1020 | err = 0; | |
1021 | /* | |
1022 | * Just disable enhanced area off & sz | |
1023 | * will try to enable ERASE_GROUP_DEF | |
1024 | * during next time reinit | |
1025 | */ | |
1026 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1027 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1028 | } else { | |
1029 | card->ext_csd.erase_group_def = 1; | |
1030 | /* | |
1031 | * enable ERASE_GRP_DEF successfully. | |
1032 | * This will affect the erase size, so | |
1033 | * here need to reset erase size | |
1034 | */ | |
1035 | mmc_set_erase_size(card); | |
1036 | } | |
1037 | } | |
1038 | ||
41e2a489 PR |
1039 | /* |
1040 | * Ensure eMMC user default partition is enabled | |
1041 | */ | |
371a689f AW |
1042 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1043 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1044 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1045 | card->ext_csd.part_config, | |
1046 | card->ext_csd.part_time); | |
1047 | if (err && err != -EBADMSG) | |
1048 | goto free_card; | |
41e2a489 PR |
1049 | } |
1050 | ||
bec8726a | 1051 | /* |
43235679 | 1052 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1053 | */ |
43235679 | 1054 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1055 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1056 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1057 | EXT_CSD_POWER_ON, | |
1058 | card->ext_csd.generic_cmd6_time); | |
1059 | if (err && err != -EBADMSG) | |
1060 | goto free_card; | |
bec8726a | 1061 | |
96a85d54 G |
1062 | /* |
1063 | * The err can be -EBADMSG or 0, | |
1064 | * so check for success and update the flag | |
1065 | */ | |
1066 | if (!err) | |
e6c08586 | 1067 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1068 | } |
bec8726a | 1069 | |
89a73cf5 PO |
1070 | /* |
1071 | * Activate high speed (if supported) | |
1072 | */ | |
a4924c71 G |
1073 | if (card->ext_csd.hs_max_dtr != 0) { |
1074 | err = 0; | |
1075 | if (card->ext_csd.hs_max_dtr > 52000000 && | |
1076 | host->caps2 & MMC_CAP2_HS200) | |
1077 | err = mmc_select_hs200(card); | |
1078 | else if (host->caps & MMC_CAP_MMC_HIGHSPEED) | |
4509f847 UH |
1079 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1080 | EXT_CSD_HS_TIMING, 1, | |
1081 | card->ext_csd.generic_cmd6_time, | |
1082 | true, true, true); | |
a4924c71 | 1083 | |
ef0b27d4 | 1084 | if (err && err != -EBADMSG) |
89a73cf5 PO |
1085 | goto free_card; |
1086 | ||
ef0b27d4 | 1087 | if (err) { |
a3c76eb9 | 1088 | pr_warning("%s: switch to highspeed failed\n", |
ef0b27d4 AH |
1089 | mmc_hostname(card->host)); |
1090 | err = 0; | |
1091 | } else { | |
a4924c71 G |
1092 | if (card->ext_csd.hs_max_dtr > 52000000 && |
1093 | host->caps2 & MMC_CAP2_HS200) { | |
1094 | mmc_card_set_hs200(card); | |
1095 | mmc_set_timing(card->host, | |
1096 | MMC_TIMING_MMC_HS200); | |
1097 | } else { | |
1098 | mmc_card_set_highspeed(card); | |
1099 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1100 | } | |
ef0b27d4 | 1101 | } |
89a73cf5 PO |
1102 | } |
1103 | ||
7ea239d9 PO |
1104 | /* |
1105 | * Compute bus speed. | |
1106 | */ | |
1107 | max_dtr = (unsigned int)-1; | |
1108 | ||
a4924c71 | 1109 | if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { |
7ea239d9 PO |
1110 | if (max_dtr > card->ext_csd.hs_max_dtr) |
1111 | max_dtr = card->ext_csd.hs_max_dtr; | |
ccb52a00 AC |
1112 | if (mmc_card_highspeed(card) && (max_dtr > 52000000)) |
1113 | max_dtr = 52000000; | |
7ea239d9 PO |
1114 | } else if (max_dtr > card->csd.max_dtr) { |
1115 | max_dtr = card->csd.max_dtr; | |
1116 | } | |
1117 | ||
1118 | mmc_set_clock(host, max_dtr); | |
1119 | ||
dfc13e84 | 1120 | /* |
0f8d8ea6 | 1121 | * Indicate DDR mode (if supported). |
dfc13e84 HP |
1122 | */ |
1123 | if (mmc_card_highspeed(card)) { | |
1124 | if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
83cc16d7 | 1125 | && (host->caps & MMC_CAP_1_8V_DDR)) |
49e3b5a4 | 1126 | ddr = MMC_1_8V_DDR_MODE; |
dfc13e84 | 1127 | else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
83cc16d7 | 1128 | && (host->caps & MMC_CAP_1_2V_DDR)) |
49e3b5a4 | 1129 | ddr = MMC_1_2V_DDR_MODE; |
dfc13e84 HP |
1130 | } |
1131 | ||
a4924c71 G |
1132 | /* |
1133 | * Indicate HS200 SDR mode (if supported). | |
1134 | */ | |
1135 | if (mmc_card_hs200(card)) { | |
1136 | u32 ext_csd_bits; | |
1137 | u32 bus_width = card->host->ios.bus_width; | |
1138 | ||
1139 | /* | |
1140 | * For devices supporting HS200 mode, the bus width has | |
1141 | * to be set before executing the tuning function. If | |
1142 | * set before tuning, then device will respond with CRC | |
1143 | * errors for responses on CMD line. So for HS200 the | |
1144 | * sequence will be | |
1145 | * 1. set bus width 4bit / 8 bit (1 bit not supported) | |
1146 | * 2. switch to HS200 mode | |
1147 | * 3. set the clock to > 52Mhz <=200MHz and | |
1148 | * 4. execute tuning for HS200 | |
1149 | */ | |
1150 | if ((host->caps2 & MMC_CAP2_HS200) && | |
52d0974e SJ |
1151 | card->host->ops->execute_tuning) { |
1152 | mmc_host_clk_hold(card->host); | |
a4924c71 G |
1153 | err = card->host->ops->execute_tuning(card->host, |
1154 | MMC_SEND_TUNING_BLOCK_HS200); | |
52d0974e SJ |
1155 | mmc_host_clk_release(card->host); |
1156 | } | |
a4924c71 G |
1157 | if (err) { |
1158 | pr_warning("%s: tuning execution failed\n", | |
1159 | mmc_hostname(card->host)); | |
1160 | goto err; | |
1161 | } | |
1162 | ||
1163 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1164 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
60443712 | 1165 | err = mmc_select_powerclass(card, ext_csd_bits); |
93fc5a47 | 1166 | if (err) |
87f761b6 V |
1167 | pr_warning("%s: power class selection to bus width %d" |
1168 | " failed\n", mmc_hostname(card->host), | |
1169 | 1 << bus_width); | |
a4924c71 G |
1170 | } |
1171 | ||
89a73cf5 | 1172 | /* |
0f8d8ea6 | 1173 | * Activate wide bus and DDR (if supported). |
89a73cf5 | 1174 | */ |
a4924c71 | 1175 | if (!mmc_card_hs200(card) && |
7488e924 | 1176 | (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && |
b30f8af3 | 1177 | (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { |
22113efd AL |
1178 | static unsigned ext_csd_bits[][2] = { |
1179 | { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, | |
1180 | { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, | |
1181 | { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, | |
1182 | }; | |
1183 | static unsigned bus_widths[] = { | |
1184 | MMC_BUS_WIDTH_8, | |
1185 | MMC_BUS_WIDTH_4, | |
1186 | MMC_BUS_WIDTH_1 | |
1187 | }; | |
1188 | unsigned idx, bus_width = 0; | |
1189 | ||
1190 | if (host->caps & MMC_CAP_8_BIT_DATA) | |
1191 | idx = 0; | |
1192 | else | |
1193 | idx = 1; | |
1194 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { | |
1195 | bus_width = bus_widths[idx]; | |
1196 | if (bus_width == MMC_BUS_WIDTH_1) | |
1197 | ddr = 0; /* no DDR for 1-bit width */ | |
60443712 | 1198 | err = mmc_select_powerclass(card, ext_csd_bits[idx][0]); |
b87d8dbf | 1199 | if (err) |
87f761b6 V |
1200 | pr_warning("%s: power class selection to " |
1201 | "bus width %d failed\n", | |
1202 | mmc_hostname(card->host), | |
1203 | 1 << bus_width); | |
b87d8dbf | 1204 | |
22113efd AL |
1205 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1206 | EXT_CSD_BUS_WIDTH, | |
d3a8d95d | 1207 | ext_csd_bits[idx][0], |
b23cf0bd | 1208 | card->ext_csd.generic_cmd6_time); |
22113efd | 1209 | if (!err) { |
4c4cb171 | 1210 | mmc_set_bus_width(card->host, bus_width); |
08ee80cc | 1211 | |
22113efd AL |
1212 | /* |
1213 | * If controller can't handle bus width test, | |
08ee80cc PR |
1214 | * compare ext_csd previously read in 1 bit mode |
1215 | * against ext_csd at new bus width | |
22113efd AL |
1216 | */ |
1217 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
08ee80cc | 1218 | err = mmc_compare_ext_csds(card, |
08ee80cc PR |
1219 | bus_width); |
1220 | else | |
1221 | err = mmc_bus_test(card, bus_width); | |
22113efd AL |
1222 | if (!err) |
1223 | break; | |
1224 | } | |
b30f8af3 JL |
1225 | } |
1226 | ||
22113efd | 1227 | if (!err && ddr) { |
60443712 | 1228 | err = mmc_select_powerclass(card, ext_csd_bits[idx][1]); |
b87d8dbf | 1229 | if (err) |
87f761b6 V |
1230 | pr_warning("%s: power class selection to " |
1231 | "bus width %d ddr %d failed\n", | |
1232 | mmc_hostname(card->host), | |
1233 | 1 << bus_width, ddr); | |
b87d8dbf | 1234 | |
22113efd | 1235 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
d3a8d95d AW |
1236 | EXT_CSD_BUS_WIDTH, |
1237 | ext_csd_bits[idx][1], | |
b23cf0bd | 1238 | card->ext_csd.generic_cmd6_time); |
22113efd | 1239 | } |
ef0b27d4 | 1240 | if (err) { |
a3c76eb9 | 1241 | pr_warning("%s: switch to bus width %d ddr %d " |
22113efd AL |
1242 | "failed\n", mmc_hostname(card->host), |
1243 | 1 << bus_width, ddr); | |
1244 | goto free_card; | |
1245 | } else if (ddr) { | |
4c4cb171 PR |
1246 | /* |
1247 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1248 | * signaling. | |
1249 | * | |
1250 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1251 | * | |
1252 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1253 | * in the JEDEC spec for DDR. | |
1254 | * | |
1255 | * Do not force change in vccq since we are obviously | |
1256 | * working and no change to vccq is needed. | |
1257 | * | |
1258 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1259 | */ | |
913047e9 | 1260 | if (ddr == MMC_1_2V_DDR_MODE) { |
567c8903 JR |
1261 | err = __mmc_set_signal_voltage(host, |
1262 | MMC_SIGNAL_VOLTAGE_120); | |
4c4cb171 PR |
1263 | if (err) |
1264 | goto err; | |
1265 | } | |
22113efd | 1266 | mmc_card_set_ddr_mode(card); |
79f7ae7c | 1267 | mmc_set_timing(card->host, MMC_TIMING_MMC_DDR52); |
4c4cb171 | 1268 | mmc_set_bus_width(card->host, bus_width); |
ef0b27d4 | 1269 | } |
89a73cf5 PO |
1270 | } |
1271 | ||
52d0974e SJ |
1272 | /* |
1273 | * Enable HPI feature (if supported) | |
1274 | */ | |
1275 | if (card->ext_csd.hpi) { | |
1276 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1277 | EXT_CSD_HPI_MGMT, 1, | |
1278 | card->ext_csd.generic_cmd6_time); | |
1279 | if (err && err != -EBADMSG) | |
1280 | goto free_card; | |
1281 | if (err) { | |
1282 | pr_warning("%s: Enabling HPI failed\n", | |
1283 | mmc_hostname(card->host)); | |
1284 | err = 0; | |
1285 | } else | |
1286 | card->ext_csd.hpi_en = 1; | |
1287 | } | |
1288 | ||
881d1c25 SJ |
1289 | /* |
1290 | * If cache size is higher than 0, this indicates | |
1291 | * the existence of cache and it can be turned on. | |
1292 | */ | |
7536d3f8 | 1293 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1294 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1295 | EXT_CSD_CACHE_CTRL, 1, |
1296 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1297 | if (err && err != -EBADMSG) |
1298 | goto free_card; | |
1299 | ||
1300 | /* | |
1301 | * Only if no error, cache is turned on successfully. | |
1302 | */ | |
8bc0678b SJ |
1303 | if (err) { |
1304 | pr_warning("%s: Cache is supported, " | |
1305 | "but failed to turn on (%d)\n", | |
1306 | mmc_hostname(card->host), err); | |
1307 | card->ext_csd.cache_ctrl = 0; | |
1308 | err = 0; | |
1309 | } else { | |
1310 | card->ext_csd.cache_ctrl = 1; | |
1311 | } | |
881d1c25 SJ |
1312 | } |
1313 | ||
abd9ac14 SJ |
1314 | /* |
1315 | * The mandatory minimum values are defined for packed command. | |
1316 | * read: 5, write: 3 | |
1317 | */ | |
1318 | if (card->ext_csd.max_packed_writes >= 3 && | |
1319 | card->ext_csd.max_packed_reads >= 5 && | |
1320 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1321 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1322 | EXT_CSD_EXP_EVENTS_CTRL, | |
1323 | EXT_CSD_PACKED_EVENT_EN, | |
1324 | card->ext_csd.generic_cmd6_time); | |
1325 | if (err && err != -EBADMSG) | |
1326 | goto free_card; | |
1327 | if (err) { | |
1328 | pr_warn("%s: Enabling packed event failed\n", | |
1329 | mmc_hostname(card->host)); | |
1330 | card->ext_csd.packed_event_en = 0; | |
1331 | err = 0; | |
1332 | } else { | |
1333 | card->ext_csd.packed_event_en = 1; | |
1334 | } | |
1335 | } | |
1336 | ||
6abaa0c9 PO |
1337 | if (!oldcard) |
1338 | host->card = card; | |
1339 | ||
08ee80cc | 1340 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1341 | return 0; |
6abaa0c9 PO |
1342 | |
1343 | free_card: | |
1344 | if (!oldcard) | |
1345 | mmc_remove_card(card); | |
1346 | err: | |
08ee80cc | 1347 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1348 | |
adf66a0d | 1349 | return err; |
6abaa0c9 PO |
1350 | } |
1351 | ||
07a68216 UH |
1352 | static int mmc_can_sleep(struct mmc_card *card) |
1353 | { | |
1354 | return (card && card->ext_csd.rev >= 3); | |
1355 | } | |
1356 | ||
1357 | static int mmc_sleep(struct mmc_host *host) | |
1358 | { | |
1359 | struct mmc_command cmd = {0}; | |
1360 | struct mmc_card *card = host->card; | |
cb962e04 | 1361 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1362 | int err; |
1363 | ||
07a68216 UH |
1364 | err = mmc_deselect_cards(host); |
1365 | if (err) | |
1366 | return err; | |
1367 | ||
1368 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1369 | cmd.arg = card->rca << 16; | |
1370 | cmd.arg |= 1 << 15; | |
1371 | ||
cb962e04 UH |
1372 | /* |
1373 | * If the max_busy_timeout of the host is specified, validate it against | |
1374 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1375 | * from doing hw busy detection, which is done by converting to a R1 | |
1376 | * response instead of a R1B. | |
1377 | */ | |
1378 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1379 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1380 | } else { | |
1381 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1382 | cmd.busy_timeout = timeout_ms; | |
1383 | } | |
1384 | ||
07a68216 UH |
1385 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1386 | if (err) | |
1387 | return err; | |
1388 | ||
1389 | /* | |
1390 | * If the host does not wait while the card signals busy, then we will | |
1391 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1392 | * SEND_STATUS command to poll the status because that command (and most | |
1393 | * others) is invalid while the card sleeps. | |
1394 | */ | |
cb962e04 UH |
1395 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1396 | mmc_delay(timeout_ms); | |
07a68216 UH |
1397 | |
1398 | return err; | |
1399 | } | |
1400 | ||
e6c08586 UH |
1401 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1402 | { | |
1403 | return card && | |
1404 | mmc_card_mmc(card) && | |
1405 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1406 | } | |
1407 | ||
1408 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1409 | { | |
1410 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1411 | int err; | |
1412 | ||
1413 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1414 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1415 | timeout = card->ext_csd.power_off_longtime; | |
1416 | ||
878e200b UH |
1417 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1418 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1419 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1420 | if (err) |
1421 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1422 | mmc_hostname(card->host), timeout); | |
1423 | ||
1424 | /* Disable the power off notification after the switch operation. */ | |
1425 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1426 | ||
1427 | return err; | |
1428 | } | |
1429 | ||
6abaa0c9 PO |
1430 | /* |
1431 | * Host is being removed. Free up the current card. | |
1432 | */ | |
1433 | static void mmc_remove(struct mmc_host *host) | |
1434 | { | |
1435 | BUG_ON(!host); | |
1436 | BUG_ON(!host->card); | |
1437 | ||
1438 | mmc_remove_card(host->card); | |
1439 | host->card = NULL; | |
1440 | } | |
1441 | ||
d3049504 AH |
1442 | /* |
1443 | * Card detection - card is alive. | |
1444 | */ | |
1445 | static int mmc_alive(struct mmc_host *host) | |
1446 | { | |
1447 | return mmc_send_status(host->card, NULL); | |
1448 | } | |
1449 | ||
6abaa0c9 PO |
1450 | /* |
1451 | * Card detection callback from host. | |
1452 | */ | |
1453 | static void mmc_detect(struct mmc_host *host) | |
1454 | { | |
1455 | int err; | |
1456 | ||
1457 | BUG_ON(!host); | |
1458 | BUG_ON(!host->card); | |
1459 | ||
e94cfef6 | 1460 | mmc_get_card(host->card); |
6abaa0c9 PO |
1461 | |
1462 | /* | |
1463 | * Just check if our card has been removed. | |
1464 | */ | |
d3049504 | 1465 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1466 | |
e94cfef6 | 1467 | mmc_put_card(host->card); |
6abaa0c9 | 1468 | |
17b0429d | 1469 | if (err) { |
4101c16a | 1470 | mmc_remove(host); |
6abaa0c9 PO |
1471 | |
1472 | mmc_claim_host(host); | |
1473 | mmc_detach_bus(host); | |
7f7e4129 | 1474 | mmc_power_off(host); |
6abaa0c9 PO |
1475 | mmc_release_host(host); |
1476 | } | |
1477 | } | |
1478 | ||
03d071fc | 1479 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1480 | { |
c3805467 | 1481 | int err = 0; |
03d071fc UH |
1482 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1483 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1484 | |
6abaa0c9 PO |
1485 | BUG_ON(!host); |
1486 | BUG_ON(!host->card); | |
7ea239d9 | 1487 | |
6abaa0c9 | 1488 | mmc_claim_host(host); |
881d926d | 1489 | |
9ec775f7 UH |
1490 | if (mmc_card_suspended(host->card)) |
1491 | goto out; | |
1492 | ||
39b9431b UH |
1493 | if (mmc_card_doing_bkops(host->card)) { |
1494 | err = mmc_stop_bkops(host->card); | |
1495 | if (err) | |
1496 | goto out; | |
1497 | } | |
1498 | ||
10e5d965 | 1499 | err = mmc_flush_cache(host->card); |
881d926d ME |
1500 | if (err) |
1501 | goto out; | |
1502 | ||
43235679 | 1503 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1504 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1505 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1506 | else if (mmc_can_sleep(host->card)) |
1507 | err = mmc_sleep(host); | |
e6c08586 | 1508 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1509 | err = mmc_deselect_cards(host); |
3e73c36b | 1510 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
95cdfb72 | 1511 | |
9ec775f7 | 1512 | if (!err) { |
74590263 | 1513 | mmc_power_off(host); |
9ec775f7 UH |
1514 | mmc_card_set_suspended(host->card); |
1515 | } | |
881d926d ME |
1516 | out: |
1517 | mmc_release_host(host); | |
c3805467 | 1518 | return err; |
6abaa0c9 | 1519 | } |
7ea239d9 | 1520 | |
03d071fc | 1521 | /* |
0cb403a2 | 1522 | * Suspend callback |
03d071fc UH |
1523 | */ |
1524 | static int mmc_suspend(struct mmc_host *host) | |
1525 | { | |
0cb403a2 UH |
1526 | int err; |
1527 | ||
1528 | err = _mmc_suspend(host, true); | |
1529 | if (!err) { | |
1530 | pm_runtime_disable(&host->card->dev); | |
1531 | pm_runtime_set_suspended(&host->card->dev); | |
1532 | } | |
1533 | ||
1534 | return err; | |
03d071fc UH |
1535 | } |
1536 | ||
6abaa0c9 | 1537 | /* |
6abaa0c9 PO |
1538 | * This function tries to determine if the same card is still present |
1539 | * and, if so, restore all state to it. | |
1540 | */ | |
0cb403a2 | 1541 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1542 | { |
9ec775f7 | 1543 | int err = 0; |
6abaa0c9 PO |
1544 | |
1545 | BUG_ON(!host); | |
1546 | BUG_ON(!host->card); | |
1547 | ||
1548 | mmc_claim_host(host); | |
9ec775f7 UH |
1549 | |
1550 | if (!mmc_card_suspended(host->card)) | |
1551 | goto out; | |
1552 | ||
69041150 | 1553 | mmc_power_up(host, host->card->ocr); |
69041150 | 1554 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1555 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1556 | |
9ec775f7 UH |
1557 | out: |
1558 | mmc_release_host(host); | |
95cdfb72 | 1559 | return err; |
6abaa0c9 PO |
1560 | } |
1561 | ||
9ec775f7 UH |
1562 | /* |
1563 | * Shutdown callback | |
1564 | */ | |
1565 | static int mmc_shutdown(struct mmc_host *host) | |
1566 | { | |
1567 | int err = 0; | |
1568 | ||
1569 | /* | |
1570 | * In a specific case for poweroff notify, we need to resume the card | |
1571 | * before we can shutdown it properly. | |
1572 | */ | |
1573 | if (mmc_can_poweroff_notify(host->card) && | |
1574 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1575 | err = _mmc_resume(host); |
9ec775f7 UH |
1576 | |
1577 | if (!err) | |
1578 | err = _mmc_suspend(host, false); | |
1579 | ||
1580 | return err; | |
1581 | } | |
c4d770d7 | 1582 | |
0cb403a2 UH |
1583 | /* |
1584 | * Callback for resume. | |
1585 | */ | |
1586 | static int mmc_resume(struct mmc_host *host) | |
1587 | { | |
4d223782 | 1588 | int err = 0; |
0cb403a2 | 1589 | |
4d223782 UH |
1590 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1591 | err = _mmc_resume(host); | |
1592 | pm_runtime_set_active(&host->card->dev); | |
1593 | pm_runtime_mark_last_busy(&host->card->dev); | |
1594 | } | |
0cb403a2 UH |
1595 | pm_runtime_enable(&host->card->dev); |
1596 | ||
1597 | return err; | |
1598 | } | |
1599 | ||
c4d770d7 UH |
1600 | /* |
1601 | * Callback for runtime_suspend. | |
1602 | */ | |
1603 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1604 | { | |
1605 | int err; | |
1606 | ||
1607 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1608 | return 0; | |
1609 | ||
0cb403a2 | 1610 | err = _mmc_suspend(host, true); |
0cc81a8c | 1611 | if (err) |
c4d770d7 UH |
1612 | pr_err("%s: error %d doing aggessive suspend\n", |
1613 | mmc_hostname(host), err); | |
c4d770d7 | 1614 | |
c4d770d7 UH |
1615 | return err; |
1616 | } | |
1617 | ||
1618 | /* | |
1619 | * Callback for runtime_resume. | |
1620 | */ | |
1621 | static int mmc_runtime_resume(struct mmc_host *host) | |
1622 | { | |
1623 | int err; | |
1624 | ||
4d223782 | 1625 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1626 | return 0; |
1627 | ||
0cb403a2 | 1628 | err = _mmc_resume(host); |
c4d770d7 UH |
1629 | if (err) |
1630 | pr_err("%s: error %d doing aggessive resume\n", | |
1631 | mmc_hostname(host), err); | |
1632 | ||
c4d770d7 UH |
1633 | return 0; |
1634 | } | |
1635 | ||
12ae637f | 1636 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1637 | { |
12ae637f OBC |
1638 | int ret; |
1639 | ||
3e73c36b | 1640 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
eae1aeee | 1641 | mmc_claim_host(host); |
69041150 | 1642 | ret = mmc_init_card(host, host->card->ocr, host->card); |
eae1aeee | 1643 | mmc_release_host(host); |
12ae637f OBC |
1644 | |
1645 | return ret; | |
eae1aeee AH |
1646 | } |
1647 | ||
6abaa0c9 PO |
1648 | static const struct mmc_bus_ops mmc_ops = { |
1649 | .remove = mmc_remove, | |
1650 | .detect = mmc_detect, | |
1651 | .suspend = mmc_suspend, | |
1652 | .resume = mmc_resume, | |
c4d770d7 UH |
1653 | .runtime_suspend = mmc_runtime_suspend, |
1654 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1655 | .power_restore = mmc_power_restore, |
d3049504 | 1656 | .alive = mmc_alive, |
486fdbbc | 1657 | .shutdown = mmc_shutdown, |
6abaa0c9 PO |
1658 | }; |
1659 | ||
1660 | /* | |
1661 | * Starting point for MMC card init. | |
1662 | */ | |
807e8e40 | 1663 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1664 | { |
1665 | int err; | |
69041150 | 1666 | u32 ocr, rocr; |
6abaa0c9 PO |
1667 | |
1668 | BUG_ON(!host); | |
d84075c8 | 1669 | WARN_ON(!host->claimed); |
6abaa0c9 | 1670 | |
44669034 SNX |
1671 | /* Set correct bus mode for MMC before attempting attach */ |
1672 | if (!mmc_host_is_spi(host)) | |
1673 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1674 | ||
807e8e40 AR |
1675 | err = mmc_send_op_cond(host, 0, &ocr); |
1676 | if (err) | |
1677 | return err; | |
1678 | ||
2501c917 | 1679 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
1680 | if (host->ocr_avail_mmc) |
1681 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1682 | |
af517150 DB |
1683 | /* |
1684 | * We need to get OCR a different way for SPI. | |
1685 | */ | |
1686 | if (mmc_host_is_spi(host)) { | |
1687 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1688 | if (err) | |
1689 | goto err; | |
1690 | } | |
1691 | ||
69041150 | 1692 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
1693 | |
1694 | /* | |
1695 | * Can we support the voltage of the card? | |
1696 | */ | |
69041150 | 1697 | if (!rocr) { |
109b5bed | 1698 | err = -EINVAL; |
6abaa0c9 | 1699 | goto err; |
109b5bed | 1700 | } |
6abaa0c9 PO |
1701 | |
1702 | /* | |
1703 | * Detect and init the card. | |
1704 | */ | |
69041150 | 1705 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 1706 | if (err) |
6abaa0c9 PO |
1707 | goto err; |
1708 | ||
1709 | mmc_release_host(host); | |
4101c16a | 1710 | err = mmc_add_card(host->card); |
807e8e40 | 1711 | mmc_claim_host(host); |
7ea239d9 | 1712 | if (err) |
2986d0bf | 1713 | goto remove_card; |
7ea239d9 PO |
1714 | |
1715 | return 0; | |
1716 | ||
2986d0bf | 1717 | remove_card: |
807e8e40 | 1718 | mmc_release_host(host); |
6abaa0c9 | 1719 | mmc_remove_card(host->card); |
2986d0bf | 1720 | mmc_claim_host(host); |
807e8e40 | 1721 | host->card = NULL; |
7ea239d9 PO |
1722 | err: |
1723 | mmc_detach_bus(host); | |
7ea239d9 | 1724 | |
a3c76eb9 | 1725 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1726 | mmc_hostname(host), err); |
1727 | ||
adf66a0d | 1728 | return err; |
7ea239d9 | 1729 | } |