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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> |
7ea239d9 PO |
16 | |
17 | #include <linux/mmc/host.h> | |
18 | #include <linux/mmc/card.h> | |
19 | #include <linux/mmc/mmc.h> | |
20 | ||
21 | #include "core.h" | |
4101c16a | 22 | #include "bus.h" |
7ea239d9 | 23 | #include "mmc_ops.h" |
4c4cb171 | 24 | #include "sd_ops.h" |
7ea239d9 PO |
25 | |
26 | static const unsigned int tran_exp[] = { | |
27 | 10000, 100000, 1000000, 10000000, | |
28 | 0, 0, 0, 0 | |
29 | }; | |
30 | ||
31 | static const unsigned char tran_mant[] = { | |
32 | 0, 10, 12, 13, 15, 20, 25, 30, | |
33 | 35, 40, 45, 50, 55, 60, 70, 80, | |
34 | }; | |
35 | ||
36 | static const unsigned int tacc_exp[] = { | |
37 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
38 | }; | |
39 | ||
40 | static const unsigned int tacc_mant[] = { | |
41 | 0, 10, 12, 13, 15, 20, 25, 30, | |
42 | 35, 40, 45, 50, 55, 60, 70, 80, | |
43 | }; | |
44 | ||
45 | #define UNSTUFF_BITS(resp,start,size) \ | |
46 | ({ \ | |
47 | const int __size = size; \ | |
48 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
49 | const int __off = 3 - ((start) / 32); \ | |
50 | const int __shft = (start) & 31; \ | |
51 | u32 __res; \ | |
52 | \ | |
53 | __res = resp[__off] >> __shft; \ | |
54 | if (__size + __shft > 32) \ | |
55 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
56 | __res & __mask; \ | |
57 | }) | |
58 | ||
59 | /* | |
60 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
61 | */ | |
bd766312 | 62 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
63 | { |
64 | u32 *resp = card->raw_cid; | |
65 | ||
66 | /* | |
67 | * The selection of the format here is based upon published | |
68 | * specs from sandisk and from what people have reported. | |
69 | */ | |
70 | switch (card->csd.mmca_vsn) { | |
71 | case 0: /* MMC v1.0 - v1.2 */ | |
72 | case 1: /* MMC v1.4 */ | |
73 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
74 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
75 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
76 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
77 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
78 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
79 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
80 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
81 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
82 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
83 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
84 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
85 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
86 | break; | |
87 | ||
88 | case 2: /* MMC v2.0 - v2.2 */ | |
89 | case 3: /* MMC v3.1 - v3.3 */ | |
90 | case 4: /* MMC v4 */ | |
91 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
92 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
93 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
94 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
95 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
96 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
97 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
98 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
99 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); | |
100 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
101 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
102 | break; | |
103 | ||
104 | default: | |
a3c76eb9 | 105 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 106 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 107 | return -EINVAL; |
7ea239d9 | 108 | } |
bd766312 PO |
109 | |
110 | return 0; | |
7ea239d9 PO |
111 | } |
112 | ||
dfe86cba AH |
113 | static void mmc_set_erase_size(struct mmc_card *card) |
114 | { | |
115 | if (card->ext_csd.erase_group_def & 1) | |
116 | card->erase_size = card->ext_csd.hc_erase_size; | |
117 | else | |
118 | card->erase_size = card->csd.erase_size; | |
119 | ||
120 | mmc_init_erase(card); | |
121 | } | |
122 | ||
7ea239d9 PO |
123 | /* |
124 | * Given a 128-bit response, decode to our card CSD structure. | |
125 | */ | |
bd766312 | 126 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
127 | { |
128 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 129 | unsigned int e, m, a, b; |
7ea239d9 PO |
130 | u32 *resp = card->raw_csd; |
131 | ||
132 | /* | |
133 | * We only understand CSD structure v1.1 and v1.2. | |
134 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 135 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 136 | */ |
6da24b78 KP |
137 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
138 | if (csd->structure == 0) { | |
a3c76eb9 | 139 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 140 | mmc_hostname(card->host), csd->structure); |
bd766312 | 141 | return -EINVAL; |
7ea239d9 PO |
142 | } |
143 | ||
144 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
145 | m = UNSTUFF_BITS(resp, 115, 4); | |
146 | e = UNSTUFF_BITS(resp, 112, 3); | |
147 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
148 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
149 | ||
150 | m = UNSTUFF_BITS(resp, 99, 4); | |
151 | e = UNSTUFF_BITS(resp, 96, 3); | |
152 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
153 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
154 | ||
155 | e = UNSTUFF_BITS(resp, 47, 3); | |
156 | m = UNSTUFF_BITS(resp, 62, 12); | |
157 | csd->capacity = (1 + m) << (e + 2); | |
158 | ||
159 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
160 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
161 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
162 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
163 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
164 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
165 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 166 | |
dfe86cba AH |
167 | if (csd->write_blkbits >= 9) { |
168 | a = UNSTUFF_BITS(resp, 42, 5); | |
169 | b = UNSTUFF_BITS(resp, 37, 5); | |
170 | csd->erase_size = (a + 1) * (b + 1); | |
171 | csd->erase_size <<= csd->write_blkbits - 9; | |
172 | } | |
173 | ||
bd766312 | 174 | return 0; |
7ea239d9 PO |
175 | } |
176 | ||
177 | /* | |
08ee80cc | 178 | * Read extended CSD. |
7ea239d9 | 179 | */ |
08ee80cc | 180 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
181 | { |
182 | int err; | |
183 | u8 *ext_csd; | |
184 | ||
185 | BUG_ON(!card); | |
08ee80cc PR |
186 | BUG_ON(!new_ext_csd); |
187 | ||
188 | *new_ext_csd = NULL; | |
7ea239d9 | 189 | |
7ea239d9 | 190 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 191 | return 0; |
7ea239d9 PO |
192 | |
193 | /* | |
194 | * As the ext_csd is so large and mostly unused, we don't store the | |
195 | * raw block in mmc_card. | |
196 | */ | |
197 | ext_csd = kmalloc(512, GFP_KERNEL); | |
198 | if (!ext_csd) { | |
a3c76eb9 | 199 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 200 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 201 | return -ENOMEM; |
7ea239d9 PO |
202 | } |
203 | ||
204 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 205 | if (err) { |
08ee80cc PR |
206 | kfree(ext_csd); |
207 | *new_ext_csd = NULL; | |
208 | ||
d08ebedd WM |
209 | /* If the host or the card can't do the switch, |
210 | * fail more gracefully. */ | |
211 | if ((err != -EINVAL) | |
212 | && (err != -ENOSYS) | |
213 | && (err != -EFAULT)) | |
08ee80cc | 214 | return err; |
adf66a0d | 215 | |
7ea239d9 PO |
216 | /* |
217 | * High capacity cards should have this "magic" size | |
218 | * stored in their CSD. | |
219 | */ | |
220 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 221 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
222 | "on a possible high capacity card. " |
223 | "Card will be ignored.\n", | |
224 | mmc_hostname(card->host)); | |
225 | } else { | |
a3c76eb9 | 226 | pr_warning("%s: unable to read " |
7ea239d9 PO |
227 | "EXT_CSD, performance might " |
228 | "suffer.\n", | |
229 | mmc_hostname(card->host)); | |
17b0429d | 230 | err = 0; |
7ea239d9 | 231 | } |
08ee80cc PR |
232 | } else |
233 | *new_ext_csd = ext_csd; | |
adf66a0d | 234 | |
08ee80cc PR |
235 | return err; |
236 | } | |
237 | ||
96cf5f02 SJ |
238 | static void mmc_select_card_type(struct mmc_card *card) |
239 | { | |
240 | struct mmc_host *host = card->host; | |
241 | u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; | |
5f1a4dd0 | 242 | u32 caps = host->caps, caps2 = host->caps2; |
96cf5f02 SJ |
243 | unsigned int hs_max_dtr = 0; |
244 | ||
245 | if (card_type & EXT_CSD_CARD_TYPE_26) | |
246 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; | |
247 | ||
248 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
249 | card_type & EXT_CSD_CARD_TYPE_52) | |
250 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; | |
251 | ||
252 | if ((caps & MMC_CAP_1_8V_DDR && | |
253 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || | |
254 | (caps & MMC_CAP_1_2V_DDR && | |
255 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) | |
256 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
257 | ||
258 | if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && | |
259 | card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || | |
260 | (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
261 | card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) | |
262 | hs_max_dtr = MMC_HS200_MAX_DTR; | |
263 | ||
264 | card->ext_csd.hs_max_dtr = hs_max_dtr; | |
265 | card->ext_csd.card_type = card_type; | |
266 | } | |
267 | ||
08ee80cc PR |
268 | /* |
269 | * Decode extended CSD. | |
270 | */ | |
271 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
272 | { | |
e0c368d5 NJ |
273 | int err = 0, idx; |
274 | unsigned int part_size; | |
275 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
276 | |
277 | BUG_ON(!card); | |
278 | ||
279 | if (!ext_csd) | |
280 | return 0; | |
7ea239d9 | 281 | |
6da24b78 | 282 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 283 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 284 | if (card->csd.structure == 3) { |
f39b2dd9 | 285 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 286 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 287 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 288 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
289 | err = -EINVAL; |
290 | goto out; | |
291 | } | |
292 | } | |
293 | ||
b1ebe384 | 294 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
38ca2850 | 295 | if (card->ext_csd.rev > 6) { |
a3c76eb9 | 296 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 297 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
298 | err = -EINVAL; |
299 | goto out; | |
d7604d76 PO |
300 | } |
301 | ||
f39b2dd9 PR |
302 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
303 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
304 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
305 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 306 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
307 | card->ext_csd.sectors = |
308 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
309 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
310 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
311 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
312 | |
313 | /* Cards with density > 2GiB are sector addressed */ | |
314 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
315 | mmc_card_set_blockaddr(card); |
316 | } | |
96cf5f02 | 317 | |
f39b2dd9 | 318 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 319 | mmc_select_card_type(card); |
7ea239d9 | 320 | |
f39b2dd9 PR |
321 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
322 | card->ext_csd.raw_erase_timeout_mult = | |
323 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
324 | card->ext_csd.raw_hc_erase_grp_size = | |
325 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
326 | if (card->ext_csd.rev >= 3) { |
327 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
328 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
329 | ||
330 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
331 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
332 | |
333 | /* Sleep / awake timeout in 100ns units */ | |
334 | if (sa_shift > 0 && sa_shift <= 0x17) | |
335 | card->ext_csd.sa_timeout = | |
336 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
337 | card->ext_csd.erase_group_def = |
338 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
339 | card->ext_csd.hc_erase_timeout = 300 * | |
340 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
341 | card->ext_csd.hc_erase_size = | |
342 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
343 | |
344 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
345 | |
346 | /* | |
347 | * There are two boot regions of equal size, defined in | |
348 | * multiples of 128K. | |
349 | */ | |
e0c368d5 NJ |
350 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
351 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
352 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
353 | mmc_part_add(card, part_size, | |
354 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
355 | "boot%d", idx, true, |
356 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
357 | } |
358 | } | |
dfe86cba AH |
359 | } |
360 | ||
f39b2dd9 | 361 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 362 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
363 | card->ext_csd.raw_sec_trim_mult = |
364 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
365 | card->ext_csd.raw_sec_erase_mult = | |
366 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
367 | card->ext_csd.raw_sec_feature_support = | |
368 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
369 | card->ext_csd.raw_trim_mult = | |
370 | ext_csd[EXT_CSD_TRIM_MULT]; | |
dfe86cba | 371 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
372 | /* |
373 | * Enhanced area feature support -- check whether the eMMC | |
374 | * card has the Enhanced area enabled. If so, export enhanced | |
375 | * area offset and size to user by adding sysfs interface. | |
376 | */ | |
5238acbe | 377 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
709de99d | 378 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && |
f39b2dd9 | 379 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 380 | hc_erase_grp_sz = |
709de99d | 381 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 382 | hc_wp_grp_sz = |
709de99d CD |
383 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
384 | ||
385 | card->ext_csd.enhanced_area_en = 1; | |
386 | /* | |
387 | * calculate the enhanced data area offset, in bytes | |
388 | */ | |
389 | card->ext_csd.enhanced_area_offset = | |
390 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
391 | (ext_csd[137] << 8) + ext_csd[136]; | |
392 | if (mmc_card_blockaddr(card)) | |
393 | card->ext_csd.enhanced_area_offset <<= 9; | |
394 | /* | |
395 | * calculate the enhanced data area size, in kilobytes | |
396 | */ | |
397 | card->ext_csd.enhanced_area_size = | |
398 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
399 | ext_csd[140]; | |
400 | card->ext_csd.enhanced_area_size *= | |
401 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
402 | card->ext_csd.enhanced_area_size <<= 9; | |
403 | } else { | |
404 | /* | |
405 | * If the enhanced area is not enabled, disable these | |
406 | * device attributes. | |
407 | */ | |
408 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
409 | card->ext_csd.enhanced_area_size = -EINVAL; | |
410 | } | |
e0c368d5 NJ |
411 | |
412 | /* | |
413 | * General purpose partition feature support -- | |
414 | * If ext_csd has the size of general purpose partitions, | |
415 | * set size, part_cfg, partition name in mmc_part. | |
416 | */ | |
417 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
418 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
419 | if (card->ext_csd.enhanced_area_en != 1) { | |
420 | hc_erase_grp_sz = | |
421 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
422 | hc_wp_grp_sz = | |
423 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
424 | ||
425 | card->ext_csd.enhanced_area_en = 1; | |
426 | } | |
427 | ||
428 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
429 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
430 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
431 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
432 | continue; | |
433 | part_size = | |
434 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
435 | << 16) + | |
436 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
437 | << 8) + | |
438 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
439 | part_size *= (size_t)(hc_erase_grp_sz * | |
440 | hc_wp_grp_sz); | |
441 | mmc_part_add(card, part_size << 19, | |
442 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
add710ea JR |
443 | "gp%d", idx, false, |
444 | MMC_BLK_DATA_AREA_GP); | |
e0c368d5 NJ |
445 | } |
446 | } | |
dfe86cba AH |
447 | card->ext_csd.sec_trim_mult = |
448 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
449 | card->ext_csd.sec_erase_mult = | |
450 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
451 | card->ext_csd.sec_feature_support = | |
452 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
453 | card->ext_csd.trim_timeout = 300 * | |
454 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
455 | |
456 | /* | |
457 | * Note that the call to mmc_part_add above defaults to read | |
458 | * only. If this default assumption is changed, the call must | |
459 | * take into account the value of boot_locked below. | |
460 | */ | |
461 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
462 | card->ext_csd.boot_ro_lockable = true; | |
b1ebe384 JL |
463 | } |
464 | ||
b2499518 | 465 | if (card->ext_csd.rev >= 5) { |
950d56ac JC |
466 | /* check whether the eMMC card supports BKOPS */ |
467 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
468 | card->ext_csd.bkops = 1; | |
469 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
470 | card->ext_csd.raw_bkops_status = | |
471 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
472 | if (!card->ext_csd.bkops_en) | |
473 | pr_info("%s: BKOPS_EN bit is not set\n", | |
474 | mmc_hostname(card->host)); | |
475 | } | |
476 | ||
eb0d8f13 JC |
477 | /* check whether the eMMC card supports HPI */ |
478 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
479 | card->ext_csd.hpi = 1; | |
480 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
481 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
482 | else | |
483 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
484 | /* | |
485 | * Indicate the maximum timeout to close | |
486 | * a command interrupted by HPI | |
487 | */ | |
488 | card->ext_csd.out_of_int_time = | |
489 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
490 | } | |
491 | ||
f4c5522b | 492 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 493 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
494 | |
495 | /* | |
496 | * RPMB regions are defined in multiples of 128K. | |
497 | */ | |
498 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 499 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
500 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
501 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
502 | "rpmb", 0, false, | |
503 | MMC_BLK_DATA_AREA_RPMB); | |
504 | } | |
b2499518 | 505 | } |
f4c5522b | 506 | |
5238acbe | 507 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
508 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
509 | card->erased_byte = 0xFF; | |
510 | else | |
511 | card->erased_byte = 0x0; | |
512 | ||
336c716a | 513 | /* eMMC v4.5 or later */ |
bec8726a | 514 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
515 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
516 | ||
b23cf0bd SJ |
517 | card->ext_csd.generic_cmd6_time = 10 * |
518 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
519 | card->ext_csd.power_off_longtime = 10 * |
520 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 521 | |
336c716a SJ |
522 | card->ext_csd.cache_size = |
523 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
524 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
525 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
526 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
527 | |
528 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
529 | card->ext_csd.data_sector_size = 4096; | |
530 | else | |
531 | card->ext_csd.data_sector_size = 512; | |
532 | ||
533 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
534 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
535 | card->ext_csd.data_tag_unit_size = | |
536 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
537 | (card->ext_csd.data_sector_size); | |
538 | } else { | |
539 | card->ext_csd.data_tag_unit_size = 0; | |
540 | } | |
a5075eb9 SD |
541 | } else { |
542 | card->ext_csd.data_sector_size = 512; | |
336c716a | 543 | } |
881d1c25 | 544 | |
7ea239d9 | 545 | out: |
08ee80cc PR |
546 | return err; |
547 | } | |
548 | ||
549 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
550 | { | |
7ea239d9 | 551 | kfree(ext_csd); |
08ee80cc PR |
552 | } |
553 | ||
7ea239d9 | 554 | |
f39b2dd9 | 555 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
556 | { |
557 | u8 *bw_ext_csd; | |
558 | int err; | |
559 | ||
f39b2dd9 PR |
560 | if (bus_width == MMC_BUS_WIDTH_1) |
561 | return 0; | |
562 | ||
08ee80cc | 563 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 564 | |
f39b2dd9 | 565 | if (err || bw_ext_csd == NULL) { |
f6f44590 | 566 | err = -EINVAL; |
08ee80cc PR |
567 | goto out; |
568 | } | |
569 | ||
08ee80cc | 570 | /* only compare read only fields */ |
dd13b4ed | 571 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 572 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 573 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 574 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 575 | (card->ext_csd.rev == |
08ee80cc | 576 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 577 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 578 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 579 | (card->ext_csd.raw_card_type == |
08ee80cc | 580 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 581 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 582 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 583 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 584 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 585 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 586 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 587 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 588 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 589 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 590 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 591 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 592 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 593 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 594 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 595 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 596 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
597 | (card->ext_csd.raw_sectors[0] == |
598 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
599 | (card->ext_csd.raw_sectors[1] == | |
600 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
601 | (card->ext_csd.raw_sectors[2] == | |
602 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
603 | (card->ext_csd.raw_sectors[3] == | |
604 | bw_ext_csd[EXT_CSD_SEC_CNT + 3])); | |
08ee80cc PR |
605 | if (err) |
606 | err = -EINVAL; | |
607 | ||
608 | out: | |
609 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
610 | return err; |
611 | } | |
612 | ||
51ec92e2 PO |
613 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
614 | card->raw_cid[2], card->raw_cid[3]); | |
615 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
616 | card->raw_csd[2], card->raw_csd[3]); | |
617 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
618 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
619 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
620 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
621 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
622 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
623 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
624 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
625 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); | |
709de99d CD |
626 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
627 | card->ext_csd.enhanced_area_offset); | |
628 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
629 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
630 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 PO |
631 | |
632 | static struct attribute *mmc_std_attrs[] = { | |
633 | &dev_attr_cid.attr, | |
634 | &dev_attr_csd.attr, | |
635 | &dev_attr_date.attr, | |
dfe86cba AH |
636 | &dev_attr_erase_size.attr, |
637 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
638 | &dev_attr_fwrev.attr, |
639 | &dev_attr_hwrev.attr, | |
640 | &dev_attr_manfid.attr, | |
641 | &dev_attr_name.attr, | |
642 | &dev_attr_oemid.attr, | |
643 | &dev_attr_serial.attr, | |
709de99d CD |
644 | &dev_attr_enhanced_area_offset.attr, |
645 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
646 | &dev_attr_raw_rpmb_size_mult.attr, |
647 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
648 | NULL, |
649 | }; | |
650 | ||
651 | static struct attribute_group mmc_std_attr_group = { | |
652 | .attrs = mmc_std_attrs, | |
653 | }; | |
654 | ||
a4dbd674 | 655 | static const struct attribute_group *mmc_attr_groups[] = { |
51ec92e2 PO |
656 | &mmc_std_attr_group, |
657 | NULL, | |
658 | }; | |
659 | ||
660 | static struct device_type mmc_type = { | |
661 | .groups = mmc_attr_groups, | |
662 | }; | |
663 | ||
b87d8dbf G |
664 | /* |
665 | * Select the PowerClass for the current bus width | |
666 | * If power class is defined for 4/8 bit bus in the | |
667 | * extended CSD register, select it by executing the | |
668 | * mmc_switch command. | |
669 | */ | |
670 | static int mmc_select_powerclass(struct mmc_card *card, | |
671 | unsigned int bus_width, u8 *ext_csd) | |
672 | { | |
673 | int err = 0; | |
674 | unsigned int pwrclass_val; | |
675 | unsigned int index = 0; | |
676 | struct mmc_host *host; | |
677 | ||
678 | BUG_ON(!card); | |
679 | ||
680 | host = card->host; | |
681 | BUG_ON(!host); | |
682 | ||
683 | if (ext_csd == NULL) | |
684 | return 0; | |
685 | ||
686 | /* Power class selection is supported for versions >= 4.0 */ | |
687 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
688 | return 0; | |
689 | ||
690 | /* Power class values are defined only for 4/8 bit bus */ | |
691 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
692 | return 0; | |
693 | ||
694 | switch (1 << host->ios.vdd) { | |
695 | case MMC_VDD_165_195: | |
696 | if (host->ios.clock <= 26000000) | |
697 | index = EXT_CSD_PWR_CL_26_195; | |
698 | else if (host->ios.clock <= 52000000) | |
699 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
700 | EXT_CSD_PWR_CL_52_195 : | |
701 | EXT_CSD_PWR_CL_DDR_52_195; | |
702 | else if (host->ios.clock <= 200000000) | |
703 | index = EXT_CSD_PWR_CL_200_195; | |
704 | break; | |
93fc5a47 SJ |
705 | case MMC_VDD_27_28: |
706 | case MMC_VDD_28_29: | |
707 | case MMC_VDD_29_30: | |
708 | case MMC_VDD_30_31: | |
709 | case MMC_VDD_31_32: | |
b87d8dbf G |
710 | case MMC_VDD_32_33: |
711 | case MMC_VDD_33_34: | |
712 | case MMC_VDD_34_35: | |
713 | case MMC_VDD_35_36: | |
714 | if (host->ios.clock <= 26000000) | |
715 | index = EXT_CSD_PWR_CL_26_360; | |
716 | else if (host->ios.clock <= 52000000) | |
717 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
718 | EXT_CSD_PWR_CL_52_360 : | |
719 | EXT_CSD_PWR_CL_DDR_52_360; | |
720 | else if (host->ios.clock <= 200000000) | |
721 | index = EXT_CSD_PWR_CL_200_360; | |
722 | break; | |
723 | default: | |
724 | pr_warning("%s: Voltage range not supported " | |
725 | "for power class.\n", mmc_hostname(host)); | |
726 | return -EINVAL; | |
727 | } | |
728 | ||
729 | pwrclass_val = ext_csd[index]; | |
730 | ||
731 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) | |
732 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
733 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
734 | else | |
735 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
736 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
737 | ||
738 | /* If the power class is different from the default value */ | |
739 | if (pwrclass_val > 0) { | |
740 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
741 | EXT_CSD_POWER_CLASS, | |
742 | pwrclass_val, | |
71fe3eb0 | 743 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
744 | } |
745 | ||
746 | return err; | |
747 | } | |
748 | ||
a4924c71 G |
749 | /* |
750 | * Selects the desired buswidth and switch to the HS200 mode | |
751 | * if bus width set without error | |
752 | */ | |
753 | static int mmc_select_hs200(struct mmc_card *card) | |
754 | { | |
10942aa4 | 755 | int idx, err = -EINVAL; |
a4924c71 G |
756 | struct mmc_host *host; |
757 | static unsigned ext_csd_bits[] = { | |
758 | EXT_CSD_BUS_WIDTH_4, | |
759 | EXT_CSD_BUS_WIDTH_8, | |
760 | }; | |
761 | static unsigned bus_widths[] = { | |
762 | MMC_BUS_WIDTH_4, | |
763 | MMC_BUS_WIDTH_8, | |
764 | }; | |
765 | ||
766 | BUG_ON(!card); | |
767 | ||
768 | host = card->host; | |
769 | ||
770 | if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && | |
10942aa4 SJ |
771 | host->caps2 & MMC_CAP2_HS200_1_2V_SDR) |
772 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); | |
773 | ||
774 | if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && | |
775 | host->caps2 & MMC_CAP2_HS200_1_8V_SDR) | |
776 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 0); | |
a4924c71 G |
777 | |
778 | /* If fails try again during next card power cycle */ | |
779 | if (err) | |
780 | goto err; | |
781 | ||
782 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; | |
783 | ||
784 | /* | |
785 | * Unlike SD, MMC cards dont have a configuration register to notify | |
786 | * supported bus width. So bus test command should be run to identify | |
787 | * the supported bus width or compare the ext csd values of current | |
788 | * bus width and ext csd values of 1 bit mode read earlier. | |
789 | */ | |
790 | for (; idx >= 0; idx--) { | |
791 | ||
792 | /* | |
793 | * Host is capable of 8bit transfer, then switch | |
794 | * the device to work in 8bit transfer mode. If the | |
795 | * mmc switch command returns error then switch to | |
796 | * 4bit transfer mode. On success set the corresponding | |
797 | * bus width on the host. | |
798 | */ | |
799 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
800 | EXT_CSD_BUS_WIDTH, | |
801 | ext_csd_bits[idx], | |
802 | card->ext_csd.generic_cmd6_time); | |
803 | if (err) | |
804 | continue; | |
805 | ||
806 | mmc_set_bus_width(card->host, bus_widths[idx]); | |
807 | ||
808 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
809 | err = mmc_compare_ext_csds(card, bus_widths[idx]); | |
810 | else | |
811 | err = mmc_bus_test(card, bus_widths[idx]); | |
812 | if (!err) | |
813 | break; | |
814 | } | |
815 | ||
816 | /* switch to HS200 mode if bus width set successfully */ | |
817 | if (!err) | |
818 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
819 | EXT_CSD_HS_TIMING, 2, 0); | |
820 | err: | |
821 | return err; | |
822 | } | |
823 | ||
7ea239d9 | 824 | /* |
6abaa0c9 PO |
825 | * Handle the detection and initialisation of a card. |
826 | * | |
8769392b | 827 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 828 | * we're trying to reinitialise. |
7ea239d9 | 829 | */ |
8c75deae | 830 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 831 | struct mmc_card *oldcard) |
7ea239d9 PO |
832 | { |
833 | struct mmc_card *card; | |
25d5c699 | 834 | int err, ddr = 0; |
7ea239d9 PO |
835 | u32 cid[4]; |
836 | unsigned int max_dtr; | |
b676f039 | 837 | u32 rocr; |
08ee80cc | 838 | u8 *ext_csd = NULL; |
7ea239d9 PO |
839 | |
840 | BUG_ON(!host); | |
d84075c8 | 841 | WARN_ON(!host->claimed); |
7ea239d9 | 842 | |
44669034 SNX |
843 | /* Set correct bus mode for MMC before attempting init */ |
844 | if (!mmc_host_is_spi(host)) | |
845 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
846 | ||
7ea239d9 PO |
847 | /* |
848 | * Since we're changing the OCR value, we seem to | |
849 | * need to tell some cards to go back to the idle | |
850 | * state. We wait 1ms to give cards time to | |
851 | * respond. | |
c3805467 | 852 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
853 | */ |
854 | mmc_go_idle(host); | |
855 | ||
856 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 857 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 858 | if (err) |
6abaa0c9 | 859 | goto err; |
7ea239d9 | 860 | |
af517150 DB |
861 | /* |
862 | * For SPI, enable CRC as appropriate. | |
863 | */ | |
864 | if (mmc_host_is_spi(host)) { | |
865 | err = mmc_spi_set_crc(host, use_spi_crc); | |
866 | if (err) | |
867 | goto err; | |
868 | } | |
869 | ||
7ea239d9 PO |
870 | /* |
871 | * Fetch CID from card. | |
872 | */ | |
af517150 DB |
873 | if (mmc_host_is_spi(host)) |
874 | err = mmc_send_cid(host, cid); | |
875 | else | |
876 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 877 | if (err) |
7ea239d9 PO |
878 | goto err; |
879 | ||
6abaa0c9 | 880 | if (oldcard) { |
adf66a0d PO |
881 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
882 | err = -ENOENT; | |
6abaa0c9 | 883 | goto err; |
adf66a0d | 884 | } |
6abaa0c9 PO |
885 | |
886 | card = oldcard; | |
887 | } else { | |
888 | /* | |
889 | * Allocate card structure. | |
890 | */ | |
51ec92e2 | 891 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
892 | if (IS_ERR(card)) { |
893 | err = PTR_ERR(card); | |
6abaa0c9 | 894 | goto err; |
adf66a0d | 895 | } |
7ea239d9 | 896 | |
6abaa0c9 PO |
897 | card->type = MMC_TYPE_MMC; |
898 | card->rca = 1; | |
899 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
900 | } | |
7ea239d9 PO |
901 | |
902 | /* | |
af517150 | 903 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 904 | */ |
af517150 DB |
905 | if (!mmc_host_is_spi(host)) { |
906 | err = mmc_set_relative_addr(card); | |
907 | if (err) | |
908 | goto free_card; | |
7ea239d9 | 909 | |
af517150 DB |
910 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
911 | } | |
7ea239d9 | 912 | |
6abaa0c9 PO |
913 | if (!oldcard) { |
914 | /* | |
915 | * Fetch CSD from card. | |
916 | */ | |
917 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 918 | if (err) |
6abaa0c9 | 919 | goto free_card; |
7ea239d9 | 920 | |
bd766312 | 921 | err = mmc_decode_csd(card); |
adf66a0d | 922 | if (err) |
bd766312 PO |
923 | goto free_card; |
924 | err = mmc_decode_cid(card); | |
adf66a0d | 925 | if (err) |
bd766312 | 926 | goto free_card; |
6abaa0c9 | 927 | } |
7ea239d9 PO |
928 | |
929 | /* | |
89a73cf5 | 930 | * Select card, as all following commands rely on that. |
7ea239d9 | 931 | */ |
af517150 DB |
932 | if (!mmc_host_is_spi(host)) { |
933 | err = mmc_select_card(card); | |
934 | if (err) | |
935 | goto free_card; | |
936 | } | |
7ea239d9 | 937 | |
6abaa0c9 PO |
938 | if (!oldcard) { |
939 | /* | |
af517150 | 940 | * Fetch and process extended CSD. |
6abaa0c9 | 941 | */ |
08ee80cc PR |
942 | |
943 | err = mmc_get_ext_csd(card, &ext_csd); | |
944 | if (err) | |
945 | goto free_card; | |
946 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 947 | if (err) |
6abaa0c9 | 948 | goto free_card; |
b676f039 PR |
949 | |
950 | /* If doing byte addressing, check if required to do sector | |
951 | * addressing. Handle the case of <2GB cards needing sector | |
952 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
953 | * ocr register has bit 30 set for sector addressing. | |
954 | */ | |
955 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
956 | mmc_card_set_blockaddr(card); | |
957 | ||
dfe86cba AH |
958 | /* Erase size depends on CSD and Extended CSD */ |
959 | mmc_set_erase_size(card); | |
6abaa0c9 | 960 | } |
7ea239d9 | 961 | |
709de99d CD |
962 | /* |
963 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 964 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 965 | */ |
83bb24aa AH |
966 | if (card->ext_csd.enhanced_area_en || |
967 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { | |
709de99d | 968 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
969 | EXT_CSD_ERASE_GROUP_DEF, 1, |
970 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
971 | |
972 | if (err && err != -EBADMSG) | |
973 | goto free_card; | |
974 | ||
975 | if (err) { | |
976 | err = 0; | |
977 | /* | |
978 | * Just disable enhanced area off & sz | |
979 | * will try to enable ERASE_GROUP_DEF | |
980 | * during next time reinit | |
981 | */ | |
982 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
983 | card->ext_csd.enhanced_area_size = -EINVAL; | |
984 | } else { | |
985 | card->ext_csd.erase_group_def = 1; | |
986 | /* | |
987 | * enable ERASE_GRP_DEF successfully. | |
988 | * This will affect the erase size, so | |
989 | * here need to reset erase size | |
990 | */ | |
991 | mmc_set_erase_size(card); | |
992 | } | |
993 | } | |
994 | ||
41e2a489 PR |
995 | /* |
996 | * Ensure eMMC user default partition is enabled | |
997 | */ | |
371a689f AW |
998 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
999 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1000 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1001 | card->ext_csd.part_config, | |
1002 | card->ext_csd.part_time); | |
1003 | if (err && err != -EBADMSG) | |
1004 | goto free_card; | |
41e2a489 PR |
1005 | } |
1006 | ||
bec8726a G |
1007 | /* |
1008 | * If the host supports the power_off_notify capability then | |
1009 | * set the notification byte in the ext_csd register of device | |
1010 | */ | |
1011 | if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && | |
a80f1627 | 1012 | (card->ext_csd.rev >= 6)) { |
bec8726a G |
1013 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1014 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1015 | EXT_CSD_POWER_ON, | |
1016 | card->ext_csd.generic_cmd6_time); | |
1017 | if (err && err != -EBADMSG) | |
1018 | goto free_card; | |
bec8726a | 1019 | |
96a85d54 G |
1020 | /* |
1021 | * The err can be -EBADMSG or 0, | |
1022 | * so check for success and update the flag | |
1023 | */ | |
1024 | if (!err) | |
e6c08586 | 1025 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1026 | } |
bec8726a | 1027 | |
89a73cf5 PO |
1028 | /* |
1029 | * Activate high speed (if supported) | |
1030 | */ | |
a4924c71 G |
1031 | if (card->ext_csd.hs_max_dtr != 0) { |
1032 | err = 0; | |
1033 | if (card->ext_csd.hs_max_dtr > 52000000 && | |
1034 | host->caps2 & MMC_CAP2_HS200) | |
1035 | err = mmc_select_hs200(card); | |
1036 | else if (host->caps & MMC_CAP_MMC_HIGHSPEED) | |
1037 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
7488e924 G |
1038 | EXT_CSD_HS_TIMING, 1, |
1039 | card->ext_csd.generic_cmd6_time); | |
a4924c71 | 1040 | |
ef0b27d4 | 1041 | if (err && err != -EBADMSG) |
89a73cf5 PO |
1042 | goto free_card; |
1043 | ||
ef0b27d4 | 1044 | if (err) { |
a3c76eb9 | 1045 | pr_warning("%s: switch to highspeed failed\n", |
ef0b27d4 AH |
1046 | mmc_hostname(card->host)); |
1047 | err = 0; | |
1048 | } else { | |
a4924c71 G |
1049 | if (card->ext_csd.hs_max_dtr > 52000000 && |
1050 | host->caps2 & MMC_CAP2_HS200) { | |
1051 | mmc_card_set_hs200(card); | |
1052 | mmc_set_timing(card->host, | |
1053 | MMC_TIMING_MMC_HS200); | |
1054 | } else { | |
1055 | mmc_card_set_highspeed(card); | |
1056 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1057 | } | |
ef0b27d4 | 1058 | } |
89a73cf5 PO |
1059 | } |
1060 | ||
7ea239d9 PO |
1061 | /* |
1062 | * Compute bus speed. | |
1063 | */ | |
1064 | max_dtr = (unsigned int)-1; | |
1065 | ||
a4924c71 | 1066 | if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { |
7ea239d9 PO |
1067 | if (max_dtr > card->ext_csd.hs_max_dtr) |
1068 | max_dtr = card->ext_csd.hs_max_dtr; | |
ccb52a00 AC |
1069 | if (mmc_card_highspeed(card) && (max_dtr > 52000000)) |
1070 | max_dtr = 52000000; | |
7ea239d9 PO |
1071 | } else if (max_dtr > card->csd.max_dtr) { |
1072 | max_dtr = card->csd.max_dtr; | |
1073 | } | |
1074 | ||
1075 | mmc_set_clock(host, max_dtr); | |
1076 | ||
dfc13e84 | 1077 | /* |
0f8d8ea6 | 1078 | * Indicate DDR mode (if supported). |
dfc13e84 HP |
1079 | */ |
1080 | if (mmc_card_highspeed(card)) { | |
1081 | if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
4c4cb171 PR |
1082 | && ((host->caps & (MMC_CAP_1_8V_DDR | |
1083 | MMC_CAP_UHS_DDR50)) | |
1084 | == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 1085 | ddr = MMC_1_8V_DDR_MODE; |
dfc13e84 | 1086 | else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
4c4cb171 PR |
1087 | && ((host->caps & (MMC_CAP_1_2V_DDR | |
1088 | MMC_CAP_UHS_DDR50)) | |
1089 | == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 1090 | ddr = MMC_1_2V_DDR_MODE; |
dfc13e84 HP |
1091 | } |
1092 | ||
a4924c71 G |
1093 | /* |
1094 | * Indicate HS200 SDR mode (if supported). | |
1095 | */ | |
1096 | if (mmc_card_hs200(card)) { | |
1097 | u32 ext_csd_bits; | |
1098 | u32 bus_width = card->host->ios.bus_width; | |
1099 | ||
1100 | /* | |
1101 | * For devices supporting HS200 mode, the bus width has | |
1102 | * to be set before executing the tuning function. If | |
1103 | * set before tuning, then device will respond with CRC | |
1104 | * errors for responses on CMD line. So for HS200 the | |
1105 | * sequence will be | |
1106 | * 1. set bus width 4bit / 8 bit (1 bit not supported) | |
1107 | * 2. switch to HS200 mode | |
1108 | * 3. set the clock to > 52Mhz <=200MHz and | |
1109 | * 4. execute tuning for HS200 | |
1110 | */ | |
1111 | if ((host->caps2 & MMC_CAP2_HS200) && | |
52d0974e SJ |
1112 | card->host->ops->execute_tuning) { |
1113 | mmc_host_clk_hold(card->host); | |
a4924c71 G |
1114 | err = card->host->ops->execute_tuning(card->host, |
1115 | MMC_SEND_TUNING_BLOCK_HS200); | |
52d0974e SJ |
1116 | mmc_host_clk_release(card->host); |
1117 | } | |
a4924c71 G |
1118 | if (err) { |
1119 | pr_warning("%s: tuning execution failed\n", | |
1120 | mmc_hostname(card->host)); | |
1121 | goto err; | |
1122 | } | |
1123 | ||
1124 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1125 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
1126 | err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); | |
93fc5a47 | 1127 | if (err) |
87f761b6 V |
1128 | pr_warning("%s: power class selection to bus width %d" |
1129 | " failed\n", mmc_hostname(card->host), | |
1130 | 1 << bus_width); | |
a4924c71 G |
1131 | } |
1132 | ||
89a73cf5 | 1133 | /* |
0f8d8ea6 | 1134 | * Activate wide bus and DDR (if supported). |
89a73cf5 | 1135 | */ |
a4924c71 | 1136 | if (!mmc_card_hs200(card) && |
7488e924 | 1137 | (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && |
b30f8af3 | 1138 | (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { |
22113efd AL |
1139 | static unsigned ext_csd_bits[][2] = { |
1140 | { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, | |
1141 | { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, | |
1142 | { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, | |
1143 | }; | |
1144 | static unsigned bus_widths[] = { | |
1145 | MMC_BUS_WIDTH_8, | |
1146 | MMC_BUS_WIDTH_4, | |
1147 | MMC_BUS_WIDTH_1 | |
1148 | }; | |
1149 | unsigned idx, bus_width = 0; | |
1150 | ||
1151 | if (host->caps & MMC_CAP_8_BIT_DATA) | |
1152 | idx = 0; | |
1153 | else | |
1154 | idx = 1; | |
1155 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { | |
1156 | bus_width = bus_widths[idx]; | |
1157 | if (bus_width == MMC_BUS_WIDTH_1) | |
1158 | ddr = 0; /* no DDR for 1-bit width */ | |
b87d8dbf G |
1159 | err = mmc_select_powerclass(card, ext_csd_bits[idx][0], |
1160 | ext_csd); | |
1161 | if (err) | |
87f761b6 V |
1162 | pr_warning("%s: power class selection to " |
1163 | "bus width %d failed\n", | |
1164 | mmc_hostname(card->host), | |
1165 | 1 << bus_width); | |
b87d8dbf | 1166 | |
22113efd AL |
1167 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1168 | EXT_CSD_BUS_WIDTH, | |
d3a8d95d | 1169 | ext_csd_bits[idx][0], |
b23cf0bd | 1170 | card->ext_csd.generic_cmd6_time); |
22113efd | 1171 | if (!err) { |
4c4cb171 | 1172 | mmc_set_bus_width(card->host, bus_width); |
08ee80cc | 1173 | |
22113efd AL |
1174 | /* |
1175 | * If controller can't handle bus width test, | |
08ee80cc PR |
1176 | * compare ext_csd previously read in 1 bit mode |
1177 | * against ext_csd at new bus width | |
22113efd AL |
1178 | */ |
1179 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
08ee80cc | 1180 | err = mmc_compare_ext_csds(card, |
08ee80cc PR |
1181 | bus_width); |
1182 | else | |
1183 | err = mmc_bus_test(card, bus_width); | |
22113efd AL |
1184 | if (!err) |
1185 | break; | |
1186 | } | |
b30f8af3 JL |
1187 | } |
1188 | ||
22113efd | 1189 | if (!err && ddr) { |
b87d8dbf G |
1190 | err = mmc_select_powerclass(card, ext_csd_bits[idx][1], |
1191 | ext_csd); | |
1192 | if (err) | |
87f761b6 V |
1193 | pr_warning("%s: power class selection to " |
1194 | "bus width %d ddr %d failed\n", | |
1195 | mmc_hostname(card->host), | |
1196 | 1 << bus_width, ddr); | |
b87d8dbf | 1197 | |
22113efd | 1198 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
d3a8d95d AW |
1199 | EXT_CSD_BUS_WIDTH, |
1200 | ext_csd_bits[idx][1], | |
b23cf0bd | 1201 | card->ext_csd.generic_cmd6_time); |
22113efd | 1202 | } |
ef0b27d4 | 1203 | if (err) { |
a3c76eb9 | 1204 | pr_warning("%s: switch to bus width %d ddr %d " |
22113efd AL |
1205 | "failed\n", mmc_hostname(card->host), |
1206 | 1 << bus_width, ddr); | |
1207 | goto free_card; | |
1208 | } else if (ddr) { | |
4c4cb171 PR |
1209 | /* |
1210 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1211 | * signaling. | |
1212 | * | |
1213 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1214 | * | |
1215 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1216 | * in the JEDEC spec for DDR. | |
1217 | * | |
1218 | * Do not force change in vccq since we are obviously | |
1219 | * working and no change to vccq is needed. | |
1220 | * | |
1221 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1222 | */ | |
913047e9 | 1223 | if (ddr == MMC_1_2V_DDR_MODE) { |
4c4cb171 PR |
1224 | err = mmc_set_signal_voltage(host, |
1225 | MMC_SIGNAL_VOLTAGE_120, 0); | |
1226 | if (err) | |
1227 | goto err; | |
1228 | } | |
22113efd | 1229 | mmc_card_set_ddr_mode(card); |
4c4cb171 PR |
1230 | mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); |
1231 | mmc_set_bus_width(card->host, bus_width); | |
ef0b27d4 | 1232 | } |
89a73cf5 PO |
1233 | } |
1234 | ||
52d0974e SJ |
1235 | /* |
1236 | * Enable HPI feature (if supported) | |
1237 | */ | |
1238 | if (card->ext_csd.hpi) { | |
1239 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1240 | EXT_CSD_HPI_MGMT, 1, | |
1241 | card->ext_csd.generic_cmd6_time); | |
1242 | if (err && err != -EBADMSG) | |
1243 | goto free_card; | |
1244 | if (err) { | |
1245 | pr_warning("%s: Enabling HPI failed\n", | |
1246 | mmc_hostname(card->host)); | |
1247 | err = 0; | |
1248 | } else | |
1249 | card->ext_csd.hpi_en = 1; | |
1250 | } | |
1251 | ||
881d1c25 SJ |
1252 | /* |
1253 | * If cache size is higher than 0, this indicates | |
1254 | * the existence of cache and it can be turned on. | |
1255 | */ | |
1256 | if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && | |
1257 | card->ext_csd.cache_size > 0) { | |
1258 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
8bc0678b SJ |
1259 | EXT_CSD_CACHE_CTRL, 1, |
1260 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1261 | if (err && err != -EBADMSG) |
1262 | goto free_card; | |
1263 | ||
1264 | /* | |
1265 | * Only if no error, cache is turned on successfully. | |
1266 | */ | |
8bc0678b SJ |
1267 | if (err) { |
1268 | pr_warning("%s: Cache is supported, " | |
1269 | "but failed to turn on (%d)\n", | |
1270 | mmc_hostname(card->host), err); | |
1271 | card->ext_csd.cache_ctrl = 0; | |
1272 | err = 0; | |
1273 | } else { | |
1274 | card->ext_csd.cache_ctrl = 1; | |
1275 | } | |
881d1c25 SJ |
1276 | } |
1277 | ||
6abaa0c9 PO |
1278 | if (!oldcard) |
1279 | host->card = card; | |
1280 | ||
08ee80cc | 1281 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1282 | return 0; |
6abaa0c9 PO |
1283 | |
1284 | free_card: | |
1285 | if (!oldcard) | |
1286 | mmc_remove_card(card); | |
1287 | err: | |
08ee80cc | 1288 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1289 | |
adf66a0d | 1290 | return err; |
6abaa0c9 PO |
1291 | } |
1292 | ||
e6c08586 UH |
1293 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1294 | { | |
1295 | return card && | |
1296 | mmc_card_mmc(card) && | |
1297 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1298 | } | |
1299 | ||
1300 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1301 | { | |
1302 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1303 | int err; | |
1304 | ||
1305 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1306 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1307 | timeout = card->ext_csd.power_off_longtime; | |
1308 | ||
1309 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1310 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1311 | notify_type, timeout); | |
1312 | if (err) | |
1313 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1314 | mmc_hostname(card->host), timeout); | |
1315 | ||
1316 | /* Disable the power off notification after the switch operation. */ | |
1317 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1318 | ||
1319 | return err; | |
1320 | } | |
1321 | ||
6abaa0c9 PO |
1322 | /* |
1323 | * Host is being removed. Free up the current card. | |
1324 | */ | |
1325 | static void mmc_remove(struct mmc_host *host) | |
1326 | { | |
1327 | BUG_ON(!host); | |
1328 | BUG_ON(!host->card); | |
1329 | ||
1330 | mmc_remove_card(host->card); | |
1331 | host->card = NULL; | |
1332 | } | |
1333 | ||
d3049504 AH |
1334 | /* |
1335 | * Card detection - card is alive. | |
1336 | */ | |
1337 | static int mmc_alive(struct mmc_host *host) | |
1338 | { | |
1339 | return mmc_send_status(host->card, NULL); | |
1340 | } | |
1341 | ||
6abaa0c9 PO |
1342 | /* |
1343 | * Card detection callback from host. | |
1344 | */ | |
1345 | static void mmc_detect(struct mmc_host *host) | |
1346 | { | |
1347 | int err; | |
1348 | ||
1349 | BUG_ON(!host); | |
1350 | BUG_ON(!host->card); | |
1351 | ||
1352 | mmc_claim_host(host); | |
1353 | ||
1354 | /* | |
1355 | * Just check if our card has been removed. | |
1356 | */ | |
d3049504 | 1357 | err = _mmc_detect_card_removed(host); |
6abaa0c9 PO |
1358 | |
1359 | mmc_release_host(host); | |
1360 | ||
17b0429d | 1361 | if (err) { |
4101c16a | 1362 | mmc_remove(host); |
6abaa0c9 PO |
1363 | |
1364 | mmc_claim_host(host); | |
1365 | mmc_detach_bus(host); | |
7f7e4129 | 1366 | mmc_power_off(host); |
6abaa0c9 PO |
1367 | mmc_release_host(host); |
1368 | } | |
1369 | } | |
1370 | ||
6abaa0c9 PO |
1371 | /* |
1372 | * Suspend callback from host. | |
1373 | */ | |
95cdfb72 | 1374 | static int mmc_suspend(struct mmc_host *host) |
6abaa0c9 | 1375 | { |
c3805467 B |
1376 | int err = 0; |
1377 | ||
6abaa0c9 PO |
1378 | BUG_ON(!host); |
1379 | BUG_ON(!host->card); | |
7ea239d9 | 1380 | |
6abaa0c9 | 1381 | mmc_claim_host(host); |
881d926d ME |
1382 | |
1383 | err = mmc_cache_ctrl(host, 0); | |
1384 | if (err) | |
1385 | goto out; | |
1386 | ||
e6c08586 UH |
1387 | if (mmc_can_poweroff_notify(host->card)) |
1388 | err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); | |
1389 | else if (mmc_card_can_sleep(host)) | |
c3805467 | 1390 | err = mmc_card_sleep(host); |
e6c08586 | 1391 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1392 | err = mmc_deselect_cards(host); |
3e73c36b | 1393 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
95cdfb72 | 1394 | |
881d926d ME |
1395 | out: |
1396 | mmc_release_host(host); | |
c3805467 | 1397 | return err; |
6abaa0c9 | 1398 | } |
7ea239d9 | 1399 | |
6abaa0c9 PO |
1400 | /* |
1401 | * Resume callback from host. | |
1402 | * | |
1403 | * This function tries to determine if the same card is still present | |
1404 | * and, if so, restore all state to it. | |
1405 | */ | |
95cdfb72 | 1406 | static int mmc_resume(struct mmc_host *host) |
6abaa0c9 PO |
1407 | { |
1408 | int err; | |
1409 | ||
1410 | BUG_ON(!host); | |
1411 | BUG_ON(!host->card); | |
1412 | ||
1413 | mmc_claim_host(host); | |
e6c08586 | 1414 | err = mmc_init_card(host, host->ocr, host->card); |
2986d0bf PO |
1415 | mmc_release_host(host); |
1416 | ||
95cdfb72 | 1417 | return err; |
6abaa0c9 PO |
1418 | } |
1419 | ||
12ae637f | 1420 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1421 | { |
12ae637f OBC |
1422 | int ret; |
1423 | ||
3e73c36b | 1424 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
eae1aeee | 1425 | mmc_claim_host(host); |
12ae637f | 1426 | ret = mmc_init_card(host, host->ocr, host->card); |
eae1aeee | 1427 | mmc_release_host(host); |
12ae637f OBC |
1428 | |
1429 | return ret; | |
eae1aeee AH |
1430 | } |
1431 | ||
b1ebe384 JL |
1432 | static int mmc_sleep(struct mmc_host *host) |
1433 | { | |
1434 | struct mmc_card *card = host->card; | |
1435 | int err = -ENOSYS; | |
1436 | ||
1437 | if (card && card->ext_csd.rev >= 3) { | |
1438 | err = mmc_card_sleepawake(host, 1); | |
1439 | if (err < 0) | |
1440 | pr_debug("%s: Error %d while putting card into sleep", | |
1441 | mmc_hostname(host), err); | |
1442 | } | |
1443 | ||
1444 | return err; | |
1445 | } | |
1446 | ||
1447 | static int mmc_awake(struct mmc_host *host) | |
1448 | { | |
1449 | struct mmc_card *card = host->card; | |
1450 | int err = -ENOSYS; | |
1451 | ||
1452 | if (card && card->ext_csd.rev >= 3) { | |
1453 | err = mmc_card_sleepawake(host, 0); | |
1454 | if (err < 0) | |
1455 | pr_debug("%s: Error %d while awaking sleeping card", | |
1456 | mmc_hostname(host), err); | |
1457 | } | |
1458 | ||
1459 | return err; | |
1460 | } | |
1461 | ||
6abaa0c9 | 1462 | static const struct mmc_bus_ops mmc_ops = { |
b1ebe384 JL |
1463 | .awake = mmc_awake, |
1464 | .sleep = mmc_sleep, | |
9feae246 AH |
1465 | .remove = mmc_remove, |
1466 | .detect = mmc_detect, | |
1467 | .suspend = NULL, | |
1468 | .resume = NULL, | |
eae1aeee | 1469 | .power_restore = mmc_power_restore, |
d3049504 | 1470 | .alive = mmc_alive, |
9feae246 AH |
1471 | }; |
1472 | ||
1473 | static const struct mmc_bus_ops mmc_ops_unsafe = { | |
b1ebe384 JL |
1474 | .awake = mmc_awake, |
1475 | .sleep = mmc_sleep, | |
6abaa0c9 PO |
1476 | .remove = mmc_remove, |
1477 | .detect = mmc_detect, | |
1478 | .suspend = mmc_suspend, | |
1479 | .resume = mmc_resume, | |
eae1aeee | 1480 | .power_restore = mmc_power_restore, |
d3049504 | 1481 | .alive = mmc_alive, |
6abaa0c9 PO |
1482 | }; |
1483 | ||
9feae246 AH |
1484 | static void mmc_attach_bus_ops(struct mmc_host *host) |
1485 | { | |
1486 | const struct mmc_bus_ops *bus_ops; | |
1487 | ||
71d7d3d1 | 1488 | if (!mmc_card_is_removable(host)) |
9feae246 AH |
1489 | bus_ops = &mmc_ops_unsafe; |
1490 | else | |
1491 | bus_ops = &mmc_ops; | |
1492 | mmc_attach_bus(host, bus_ops); | |
1493 | } | |
1494 | ||
6abaa0c9 PO |
1495 | /* |
1496 | * Starting point for MMC card init. | |
1497 | */ | |
807e8e40 | 1498 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1499 | { |
1500 | int err; | |
807e8e40 | 1501 | u32 ocr; |
6abaa0c9 PO |
1502 | |
1503 | BUG_ON(!host); | |
d84075c8 | 1504 | WARN_ON(!host->claimed); |
6abaa0c9 | 1505 | |
44669034 SNX |
1506 | /* Set correct bus mode for MMC before attempting attach */ |
1507 | if (!mmc_host_is_spi(host)) | |
1508 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1509 | ||
807e8e40 AR |
1510 | err = mmc_send_op_cond(host, 0, &ocr); |
1511 | if (err) | |
1512 | return err; | |
1513 | ||
9feae246 | 1514 | mmc_attach_bus_ops(host); |
8f230f45 TI |
1515 | if (host->ocr_avail_mmc) |
1516 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1517 | |
af517150 DB |
1518 | /* |
1519 | * We need to get OCR a different way for SPI. | |
1520 | */ | |
1521 | if (mmc_host_is_spi(host)) { | |
1522 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1523 | if (err) | |
1524 | goto err; | |
1525 | } | |
1526 | ||
6abaa0c9 PO |
1527 | /* |
1528 | * Sanity check the voltages that the card claims to | |
1529 | * support. | |
1530 | */ | |
1531 | if (ocr & 0x7F) { | |
a3c76eb9 | 1532 | pr_warning("%s: card claims to support voltages " |
6abaa0c9 PO |
1533 | "below the defined range. These will be ignored.\n", |
1534 | mmc_hostname(host)); | |
1535 | ocr &= ~0x7F; | |
1536 | } | |
1537 | ||
1538 | host->ocr = mmc_select_voltage(host, ocr); | |
1539 | ||
1540 | /* | |
1541 | * Can we support the voltage of the card? | |
1542 | */ | |
109b5bed PO |
1543 | if (!host->ocr) { |
1544 | err = -EINVAL; | |
6abaa0c9 | 1545 | goto err; |
109b5bed | 1546 | } |
6abaa0c9 PO |
1547 | |
1548 | /* | |
1549 | * Detect and init the card. | |
1550 | */ | |
8c75deae | 1551 | err = mmc_init_card(host, host->ocr, NULL); |
17b0429d | 1552 | if (err) |
6abaa0c9 PO |
1553 | goto err; |
1554 | ||
1555 | mmc_release_host(host); | |
4101c16a | 1556 | err = mmc_add_card(host->card); |
807e8e40 | 1557 | mmc_claim_host(host); |
7ea239d9 | 1558 | if (err) |
2986d0bf | 1559 | goto remove_card; |
7ea239d9 PO |
1560 | |
1561 | return 0; | |
1562 | ||
2986d0bf | 1563 | remove_card: |
807e8e40 | 1564 | mmc_release_host(host); |
6abaa0c9 | 1565 | mmc_remove_card(host->card); |
2986d0bf | 1566 | mmc_claim_host(host); |
807e8e40 | 1567 | host->card = NULL; |
7ea239d9 PO |
1568 | err: |
1569 | mmc_detach_bus(host); | |
7ea239d9 | 1570 | |
a3c76eb9 | 1571 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1572 | mmc_hostname(host), err); |
1573 | ||
adf66a0d | 1574 | return err; |
7ea239d9 | 1575 | } |