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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> |
7ea239d9 PO |
15 | |
16 | #include <linux/mmc/host.h> | |
17 | #include <linux/mmc/card.h> | |
18 | #include <linux/mmc/mmc.h> | |
19 | ||
20 | #include "core.h" | |
4101c16a | 21 | #include "bus.h" |
7ea239d9 | 22 | #include "mmc_ops.h" |
4c4cb171 | 23 | #include "sd_ops.h" |
7ea239d9 PO |
24 | |
25 | static const unsigned int tran_exp[] = { | |
26 | 10000, 100000, 1000000, 10000000, | |
27 | 0, 0, 0, 0 | |
28 | }; | |
29 | ||
30 | static const unsigned char tran_mant[] = { | |
31 | 0, 10, 12, 13, 15, 20, 25, 30, | |
32 | 35, 40, 45, 50, 55, 60, 70, 80, | |
33 | }; | |
34 | ||
35 | static const unsigned int tacc_exp[] = { | |
36 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
37 | }; | |
38 | ||
39 | static const unsigned int tacc_mant[] = { | |
40 | 0, 10, 12, 13, 15, 20, 25, 30, | |
41 | 35, 40, 45, 50, 55, 60, 70, 80, | |
42 | }; | |
43 | ||
44 | #define UNSTUFF_BITS(resp,start,size) \ | |
45 | ({ \ | |
46 | const int __size = size; \ | |
47 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
48 | const int __off = 3 - ((start) / 32); \ | |
49 | const int __shft = (start) & 31; \ | |
50 | u32 __res; \ | |
51 | \ | |
52 | __res = resp[__off] >> __shft; \ | |
53 | if (__size + __shft > 32) \ | |
54 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
55 | __res & __mask; \ | |
56 | }) | |
57 | ||
58 | /* | |
59 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
60 | */ | |
bd766312 | 61 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
62 | { |
63 | u32 *resp = card->raw_cid; | |
64 | ||
65 | /* | |
66 | * The selection of the format here is based upon published | |
67 | * specs from sandisk and from what people have reported. | |
68 | */ | |
69 | switch (card->csd.mmca_vsn) { | |
70 | case 0: /* MMC v1.0 - v1.2 */ | |
71 | case 1: /* MMC v1.4 */ | |
72 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
73 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
74 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
75 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
76 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
77 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
78 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
79 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
80 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
81 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
82 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
83 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
84 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
85 | break; | |
86 | ||
87 | case 2: /* MMC v2.0 - v2.2 */ | |
88 | case 3: /* MMC v3.1 - v3.3 */ | |
89 | case 4: /* MMC v4 */ | |
90 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
91 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
92 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
93 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
94 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
95 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
96 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
97 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
98 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); | |
99 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
100 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
101 | break; | |
102 | ||
103 | default: | |
a3c76eb9 | 104 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 105 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 106 | return -EINVAL; |
7ea239d9 | 107 | } |
bd766312 PO |
108 | |
109 | return 0; | |
7ea239d9 PO |
110 | } |
111 | ||
dfe86cba AH |
112 | static void mmc_set_erase_size(struct mmc_card *card) |
113 | { | |
114 | if (card->ext_csd.erase_group_def & 1) | |
115 | card->erase_size = card->ext_csd.hc_erase_size; | |
116 | else | |
117 | card->erase_size = card->csd.erase_size; | |
118 | ||
119 | mmc_init_erase(card); | |
120 | } | |
121 | ||
7ea239d9 PO |
122 | /* |
123 | * Given a 128-bit response, decode to our card CSD structure. | |
124 | */ | |
bd766312 | 125 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
126 | { |
127 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 128 | unsigned int e, m, a, b; |
7ea239d9 PO |
129 | u32 *resp = card->raw_csd; |
130 | ||
131 | /* | |
132 | * We only understand CSD structure v1.1 and v1.2. | |
133 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 134 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 135 | */ |
6da24b78 KP |
136 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
137 | if (csd->structure == 0) { | |
a3c76eb9 | 138 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 139 | mmc_hostname(card->host), csd->structure); |
bd766312 | 140 | return -EINVAL; |
7ea239d9 PO |
141 | } |
142 | ||
143 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
144 | m = UNSTUFF_BITS(resp, 115, 4); | |
145 | e = UNSTUFF_BITS(resp, 112, 3); | |
146 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
147 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
148 | ||
149 | m = UNSTUFF_BITS(resp, 99, 4); | |
150 | e = UNSTUFF_BITS(resp, 96, 3); | |
151 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
152 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
153 | ||
154 | e = UNSTUFF_BITS(resp, 47, 3); | |
155 | m = UNSTUFF_BITS(resp, 62, 12); | |
156 | csd->capacity = (1 + m) << (e + 2); | |
157 | ||
158 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
159 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
160 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
161 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
162 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
163 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
164 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 165 | |
dfe86cba AH |
166 | if (csd->write_blkbits >= 9) { |
167 | a = UNSTUFF_BITS(resp, 42, 5); | |
168 | b = UNSTUFF_BITS(resp, 37, 5); | |
169 | csd->erase_size = (a + 1) * (b + 1); | |
170 | csd->erase_size <<= csd->write_blkbits - 9; | |
171 | } | |
172 | ||
bd766312 | 173 | return 0; |
7ea239d9 PO |
174 | } |
175 | ||
176 | /* | |
08ee80cc | 177 | * Read extended CSD. |
7ea239d9 | 178 | */ |
08ee80cc | 179 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
180 | { |
181 | int err; | |
182 | u8 *ext_csd; | |
183 | ||
184 | BUG_ON(!card); | |
08ee80cc PR |
185 | BUG_ON(!new_ext_csd); |
186 | ||
187 | *new_ext_csd = NULL; | |
7ea239d9 | 188 | |
7ea239d9 | 189 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 190 | return 0; |
7ea239d9 PO |
191 | |
192 | /* | |
193 | * As the ext_csd is so large and mostly unused, we don't store the | |
194 | * raw block in mmc_card. | |
195 | */ | |
196 | ext_csd = kmalloc(512, GFP_KERNEL); | |
197 | if (!ext_csd) { | |
a3c76eb9 | 198 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 199 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 200 | return -ENOMEM; |
7ea239d9 PO |
201 | } |
202 | ||
203 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 204 | if (err) { |
08ee80cc PR |
205 | kfree(ext_csd); |
206 | *new_ext_csd = NULL; | |
207 | ||
d08ebedd WM |
208 | /* If the host or the card can't do the switch, |
209 | * fail more gracefully. */ | |
210 | if ((err != -EINVAL) | |
211 | && (err != -ENOSYS) | |
212 | && (err != -EFAULT)) | |
08ee80cc | 213 | return err; |
adf66a0d | 214 | |
7ea239d9 PO |
215 | /* |
216 | * High capacity cards should have this "magic" size | |
217 | * stored in their CSD. | |
218 | */ | |
219 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 220 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
221 | "on a possible high capacity card. " |
222 | "Card will be ignored.\n", | |
223 | mmc_hostname(card->host)); | |
224 | } else { | |
a3c76eb9 | 225 | pr_warning("%s: unable to read " |
7ea239d9 PO |
226 | "EXT_CSD, performance might " |
227 | "suffer.\n", | |
228 | mmc_hostname(card->host)); | |
17b0429d | 229 | err = 0; |
7ea239d9 | 230 | } |
08ee80cc PR |
231 | } else |
232 | *new_ext_csd = ext_csd; | |
adf66a0d | 233 | |
08ee80cc PR |
234 | return err; |
235 | } | |
236 | ||
237 | /* | |
238 | * Decode extended CSD. | |
239 | */ | |
240 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
241 | { | |
e0c368d5 NJ |
242 | int err = 0, idx; |
243 | unsigned int part_size; | |
244 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
245 | |
246 | BUG_ON(!card); | |
247 | ||
248 | if (!ext_csd) | |
249 | return 0; | |
7ea239d9 | 250 | |
6da24b78 | 251 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 252 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 253 | if (card->csd.structure == 3) { |
f39b2dd9 | 254 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 255 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 256 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 257 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
258 | err = -EINVAL; |
259 | goto out; | |
260 | } | |
261 | } | |
262 | ||
b1ebe384 | 263 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
38ca2850 | 264 | if (card->ext_csd.rev > 6) { |
a3c76eb9 | 265 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 266 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
267 | err = -EINVAL; |
268 | goto out; | |
d7604d76 PO |
269 | } |
270 | ||
f39b2dd9 PR |
271 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
272 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
273 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
274 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 275 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
276 | card->ext_csd.sectors = |
277 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
278 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
279 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
280 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
281 | |
282 | /* Cards with density > 2GiB are sector addressed */ | |
283 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
284 | mmc_card_set_blockaddr(card); |
285 | } | |
f39b2dd9 | 286 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
7198f3c9 | 287 | switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { |
dfc13e84 HP |
288 | case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 | |
289 | EXT_CSD_CARD_TYPE_26: | |
290 | card->ext_csd.hs_max_dtr = 52000000; | |
291 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52; | |
292 | break; | |
293 | case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 | | |
294 | EXT_CSD_CARD_TYPE_26: | |
295 | card->ext_csd.hs_max_dtr = 52000000; | |
296 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V; | |
297 | break; | |
298 | case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 | | |
299 | EXT_CSD_CARD_TYPE_26: | |
300 | card->ext_csd.hs_max_dtr = 52000000; | |
301 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V; | |
302 | break; | |
7ea239d9 PO |
303 | case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: |
304 | card->ext_csd.hs_max_dtr = 52000000; | |
305 | break; | |
306 | case EXT_CSD_CARD_TYPE_26: | |
307 | card->ext_csd.hs_max_dtr = 26000000; | |
308 | break; | |
309 | default: | |
310 | /* MMC v4 spec says this cannot happen */ | |
a3c76eb9 | 311 | pr_warning("%s: card is mmc v4 but doesn't " |
7ea239d9 PO |
312 | "support any high-speed modes.\n", |
313 | mmc_hostname(card->host)); | |
7ea239d9 PO |
314 | } |
315 | ||
f39b2dd9 PR |
316 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
317 | card->ext_csd.raw_erase_timeout_mult = | |
318 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
319 | card->ext_csd.raw_hc_erase_grp_size = | |
320 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
321 | if (card->ext_csd.rev >= 3) { |
322 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
323 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
324 | ||
325 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
326 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
327 | |
328 | /* Sleep / awake timeout in 100ns units */ | |
329 | if (sa_shift > 0 && sa_shift <= 0x17) | |
330 | card->ext_csd.sa_timeout = | |
331 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
332 | card->ext_csd.erase_group_def = |
333 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
334 | card->ext_csd.hc_erase_timeout = 300 * | |
335 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
336 | card->ext_csd.hc_erase_size = | |
337 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
338 | |
339 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
340 | |
341 | /* | |
342 | * There are two boot regions of equal size, defined in | |
343 | * multiples of 128K. | |
344 | */ | |
e0c368d5 NJ |
345 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
346 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
347 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
348 | mmc_part_add(card, part_size, | |
349 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
350 | "boot%d", idx, true); | |
351 | } | |
352 | } | |
dfe86cba AH |
353 | } |
354 | ||
f39b2dd9 PR |
355 | card->ext_csd.raw_hc_erase_gap_size = |
356 | ext_csd[EXT_CSD_PARTITION_ATTRIBUTE]; | |
357 | card->ext_csd.raw_sec_trim_mult = | |
358 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
359 | card->ext_csd.raw_sec_erase_mult = | |
360 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
361 | card->ext_csd.raw_sec_feature_support = | |
362 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
363 | card->ext_csd.raw_trim_mult = | |
364 | ext_csd[EXT_CSD_TRIM_MULT]; | |
dfe86cba | 365 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
366 | /* |
367 | * Enhanced area feature support -- check whether the eMMC | |
368 | * card has the Enhanced area enabled. If so, export enhanced | |
369 | * area offset and size to user by adding sysfs interface. | |
370 | */ | |
5238acbe | 371 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
709de99d | 372 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && |
f39b2dd9 | 373 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 374 | hc_erase_grp_sz = |
709de99d | 375 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 376 | hc_wp_grp_sz = |
709de99d CD |
377 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
378 | ||
379 | card->ext_csd.enhanced_area_en = 1; | |
380 | /* | |
381 | * calculate the enhanced data area offset, in bytes | |
382 | */ | |
383 | card->ext_csd.enhanced_area_offset = | |
384 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
385 | (ext_csd[137] << 8) + ext_csd[136]; | |
386 | if (mmc_card_blockaddr(card)) | |
387 | card->ext_csd.enhanced_area_offset <<= 9; | |
388 | /* | |
389 | * calculate the enhanced data area size, in kilobytes | |
390 | */ | |
391 | card->ext_csd.enhanced_area_size = | |
392 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
393 | ext_csd[140]; | |
394 | card->ext_csd.enhanced_area_size *= | |
395 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
396 | card->ext_csd.enhanced_area_size <<= 9; | |
397 | } else { | |
398 | /* | |
399 | * If the enhanced area is not enabled, disable these | |
400 | * device attributes. | |
401 | */ | |
402 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
403 | card->ext_csd.enhanced_area_size = -EINVAL; | |
404 | } | |
e0c368d5 NJ |
405 | |
406 | /* | |
407 | * General purpose partition feature support -- | |
408 | * If ext_csd has the size of general purpose partitions, | |
409 | * set size, part_cfg, partition name in mmc_part. | |
410 | */ | |
411 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
412 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
413 | if (card->ext_csd.enhanced_area_en != 1) { | |
414 | hc_erase_grp_sz = | |
415 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
416 | hc_wp_grp_sz = | |
417 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
418 | ||
419 | card->ext_csd.enhanced_area_en = 1; | |
420 | } | |
421 | ||
422 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
423 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
424 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
425 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
426 | continue; | |
427 | part_size = | |
428 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
429 | << 16) + | |
430 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
431 | << 8) + | |
432 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
433 | part_size *= (size_t)(hc_erase_grp_sz * | |
434 | hc_wp_grp_sz); | |
435 | mmc_part_add(card, part_size << 19, | |
436 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
437 | "gp%d", idx, false); | |
438 | } | |
439 | } | |
dfe86cba AH |
440 | card->ext_csd.sec_trim_mult = |
441 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
442 | card->ext_csd.sec_erase_mult = | |
443 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
444 | card->ext_csd.sec_feature_support = | |
445 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
446 | card->ext_csd.trim_timeout = 300 * | |
447 | ext_csd[EXT_CSD_TRIM_MULT]; | |
b1ebe384 JL |
448 | } |
449 | ||
b2499518 | 450 | if (card->ext_csd.rev >= 5) { |
eb0d8f13 JC |
451 | /* check whether the eMMC card supports HPI */ |
452 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
453 | card->ext_csd.hpi = 1; | |
454 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
455 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
456 | else | |
457 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
458 | /* | |
459 | * Indicate the maximum timeout to close | |
460 | * a command interrupted by HPI | |
461 | */ | |
462 | card->ext_csd.out_of_int_time = | |
463 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
464 | } | |
465 | ||
f4c5522b | 466 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 AH |
467 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
468 | } | |
f4c5522b | 469 | |
5238acbe | 470 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
471 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
472 | card->erased_byte = 0xFF; | |
473 | else | |
474 | card->erased_byte = 0x0; | |
475 | ||
336c716a | 476 | /* eMMC v4.5 or later */ |
bec8726a | 477 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
478 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
479 | ||
b23cf0bd SJ |
480 | card->ext_csd.generic_cmd6_time = 10 * |
481 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
482 | card->ext_csd.power_off_longtime = 10 * |
483 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 484 | |
336c716a SJ |
485 | card->ext_csd.cache_size = |
486 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
487 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
488 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
489 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
490 | } | |
881d1c25 | 491 | |
7ea239d9 | 492 | out: |
08ee80cc PR |
493 | return err; |
494 | } | |
495 | ||
496 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
497 | { | |
7ea239d9 | 498 | kfree(ext_csd); |
08ee80cc PR |
499 | } |
500 | ||
7ea239d9 | 501 | |
f39b2dd9 | 502 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
503 | { |
504 | u8 *bw_ext_csd; | |
505 | int err; | |
506 | ||
f39b2dd9 PR |
507 | if (bus_width == MMC_BUS_WIDTH_1) |
508 | return 0; | |
509 | ||
08ee80cc | 510 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 511 | |
f39b2dd9 | 512 | if (err || bw_ext_csd == NULL) { |
08ee80cc PR |
513 | if (bus_width != MMC_BUS_WIDTH_1) |
514 | err = -EINVAL; | |
515 | goto out; | |
516 | } | |
517 | ||
518 | if (bus_width == MMC_BUS_WIDTH_1) | |
519 | goto out; | |
520 | ||
521 | /* only compare read only fields */ | |
f39b2dd9 | 522 | err = (!(card->ext_csd.raw_partition_support == |
08ee80cc | 523 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 524 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 525 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 526 | (card->ext_csd.rev == |
08ee80cc | 527 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 528 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 529 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 530 | (card->ext_csd.raw_card_type == |
08ee80cc | 531 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 532 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 533 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 534 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 535 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 536 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 537 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 538 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 539 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 540 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 541 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 542 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 543 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 544 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 545 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 546 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 547 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
548 | (card->ext_csd.raw_sectors[0] == |
549 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
550 | (card->ext_csd.raw_sectors[1] == | |
551 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
552 | (card->ext_csd.raw_sectors[2] == | |
553 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
554 | (card->ext_csd.raw_sectors[3] == | |
555 | bw_ext_csd[EXT_CSD_SEC_CNT + 3])); | |
08ee80cc PR |
556 | if (err) |
557 | err = -EINVAL; | |
558 | ||
559 | out: | |
560 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
561 | return err; |
562 | } | |
563 | ||
51ec92e2 PO |
564 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
565 | card->raw_cid[2], card->raw_cid[3]); | |
566 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
567 | card->raw_csd[2], card->raw_csd[3]); | |
568 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
569 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
570 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
571 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
572 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
573 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
574 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
575 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
576 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); | |
709de99d CD |
577 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
578 | card->ext_csd.enhanced_area_offset); | |
579 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
51ec92e2 PO |
580 | |
581 | static struct attribute *mmc_std_attrs[] = { | |
582 | &dev_attr_cid.attr, | |
583 | &dev_attr_csd.attr, | |
584 | &dev_attr_date.attr, | |
dfe86cba AH |
585 | &dev_attr_erase_size.attr, |
586 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
587 | &dev_attr_fwrev.attr, |
588 | &dev_attr_hwrev.attr, | |
589 | &dev_attr_manfid.attr, | |
590 | &dev_attr_name.attr, | |
591 | &dev_attr_oemid.attr, | |
592 | &dev_attr_serial.attr, | |
709de99d CD |
593 | &dev_attr_enhanced_area_offset.attr, |
594 | &dev_attr_enhanced_area_size.attr, | |
51ec92e2 PO |
595 | NULL, |
596 | }; | |
597 | ||
598 | static struct attribute_group mmc_std_attr_group = { | |
599 | .attrs = mmc_std_attrs, | |
600 | }; | |
601 | ||
a4dbd674 | 602 | static const struct attribute_group *mmc_attr_groups[] = { |
51ec92e2 PO |
603 | &mmc_std_attr_group, |
604 | NULL, | |
605 | }; | |
606 | ||
607 | static struct device_type mmc_type = { | |
608 | .groups = mmc_attr_groups, | |
609 | }; | |
610 | ||
b87d8dbf G |
611 | /* |
612 | * Select the PowerClass for the current bus width | |
613 | * If power class is defined for 4/8 bit bus in the | |
614 | * extended CSD register, select it by executing the | |
615 | * mmc_switch command. | |
616 | */ | |
617 | static int mmc_select_powerclass(struct mmc_card *card, | |
618 | unsigned int bus_width, u8 *ext_csd) | |
619 | { | |
620 | int err = 0; | |
621 | unsigned int pwrclass_val; | |
622 | unsigned int index = 0; | |
623 | struct mmc_host *host; | |
624 | ||
625 | BUG_ON(!card); | |
626 | ||
627 | host = card->host; | |
628 | BUG_ON(!host); | |
629 | ||
630 | if (ext_csd == NULL) | |
631 | return 0; | |
632 | ||
633 | /* Power class selection is supported for versions >= 4.0 */ | |
634 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
635 | return 0; | |
636 | ||
637 | /* Power class values are defined only for 4/8 bit bus */ | |
638 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
639 | return 0; | |
640 | ||
641 | switch (1 << host->ios.vdd) { | |
642 | case MMC_VDD_165_195: | |
643 | if (host->ios.clock <= 26000000) | |
644 | index = EXT_CSD_PWR_CL_26_195; | |
645 | else if (host->ios.clock <= 52000000) | |
646 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
647 | EXT_CSD_PWR_CL_52_195 : | |
648 | EXT_CSD_PWR_CL_DDR_52_195; | |
649 | else if (host->ios.clock <= 200000000) | |
650 | index = EXT_CSD_PWR_CL_200_195; | |
651 | break; | |
652 | case MMC_VDD_32_33: | |
653 | case MMC_VDD_33_34: | |
654 | case MMC_VDD_34_35: | |
655 | case MMC_VDD_35_36: | |
656 | if (host->ios.clock <= 26000000) | |
657 | index = EXT_CSD_PWR_CL_26_360; | |
658 | else if (host->ios.clock <= 52000000) | |
659 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
660 | EXT_CSD_PWR_CL_52_360 : | |
661 | EXT_CSD_PWR_CL_DDR_52_360; | |
662 | else if (host->ios.clock <= 200000000) | |
663 | index = EXT_CSD_PWR_CL_200_360; | |
664 | break; | |
665 | default: | |
666 | pr_warning("%s: Voltage range not supported " | |
667 | "for power class.\n", mmc_hostname(host)); | |
668 | return -EINVAL; | |
669 | } | |
670 | ||
671 | pwrclass_val = ext_csd[index]; | |
672 | ||
673 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) | |
674 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
675 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
676 | else | |
677 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
678 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
679 | ||
680 | /* If the power class is different from the default value */ | |
681 | if (pwrclass_val > 0) { | |
682 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
683 | EXT_CSD_POWER_CLASS, | |
684 | pwrclass_val, | |
71fe3eb0 | 685 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
686 | } |
687 | ||
688 | return err; | |
689 | } | |
690 | ||
7ea239d9 | 691 | /* |
6abaa0c9 PO |
692 | * Handle the detection and initialisation of a card. |
693 | * | |
8769392b | 694 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 695 | * we're trying to reinitialise. |
7ea239d9 | 696 | */ |
8c75deae | 697 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 698 | struct mmc_card *oldcard) |
7ea239d9 PO |
699 | { |
700 | struct mmc_card *card; | |
25d5c699 | 701 | int err, ddr = 0; |
7ea239d9 PO |
702 | u32 cid[4]; |
703 | unsigned int max_dtr; | |
b676f039 | 704 | u32 rocr; |
08ee80cc | 705 | u8 *ext_csd = NULL; |
7ea239d9 PO |
706 | |
707 | BUG_ON(!host); | |
d84075c8 | 708 | WARN_ON(!host->claimed); |
7ea239d9 | 709 | |
44669034 SNX |
710 | /* Set correct bus mode for MMC before attempting init */ |
711 | if (!mmc_host_is_spi(host)) | |
712 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
713 | ||
7ea239d9 PO |
714 | /* |
715 | * Since we're changing the OCR value, we seem to | |
716 | * need to tell some cards to go back to the idle | |
717 | * state. We wait 1ms to give cards time to | |
718 | * respond. | |
c3805467 | 719 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
720 | */ |
721 | mmc_go_idle(host); | |
722 | ||
723 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 724 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 725 | if (err) |
6abaa0c9 | 726 | goto err; |
7ea239d9 | 727 | |
af517150 DB |
728 | /* |
729 | * For SPI, enable CRC as appropriate. | |
730 | */ | |
731 | if (mmc_host_is_spi(host)) { | |
732 | err = mmc_spi_set_crc(host, use_spi_crc); | |
733 | if (err) | |
734 | goto err; | |
735 | } | |
736 | ||
7ea239d9 PO |
737 | /* |
738 | * Fetch CID from card. | |
739 | */ | |
af517150 DB |
740 | if (mmc_host_is_spi(host)) |
741 | err = mmc_send_cid(host, cid); | |
742 | else | |
743 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 744 | if (err) |
7ea239d9 PO |
745 | goto err; |
746 | ||
6abaa0c9 | 747 | if (oldcard) { |
adf66a0d PO |
748 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
749 | err = -ENOENT; | |
6abaa0c9 | 750 | goto err; |
adf66a0d | 751 | } |
6abaa0c9 PO |
752 | |
753 | card = oldcard; | |
754 | } else { | |
755 | /* | |
756 | * Allocate card structure. | |
757 | */ | |
51ec92e2 | 758 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
759 | if (IS_ERR(card)) { |
760 | err = PTR_ERR(card); | |
6abaa0c9 | 761 | goto err; |
adf66a0d | 762 | } |
7ea239d9 | 763 | |
6abaa0c9 PO |
764 | card->type = MMC_TYPE_MMC; |
765 | card->rca = 1; | |
766 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
767 | } | |
7ea239d9 PO |
768 | |
769 | /* | |
af517150 | 770 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 771 | */ |
af517150 DB |
772 | if (!mmc_host_is_spi(host)) { |
773 | err = mmc_set_relative_addr(card); | |
774 | if (err) | |
775 | goto free_card; | |
7ea239d9 | 776 | |
af517150 DB |
777 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
778 | } | |
7ea239d9 | 779 | |
6abaa0c9 PO |
780 | if (!oldcard) { |
781 | /* | |
782 | * Fetch CSD from card. | |
783 | */ | |
784 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 785 | if (err) |
6abaa0c9 | 786 | goto free_card; |
7ea239d9 | 787 | |
bd766312 | 788 | err = mmc_decode_csd(card); |
adf66a0d | 789 | if (err) |
bd766312 PO |
790 | goto free_card; |
791 | err = mmc_decode_cid(card); | |
adf66a0d | 792 | if (err) |
bd766312 | 793 | goto free_card; |
6abaa0c9 | 794 | } |
7ea239d9 PO |
795 | |
796 | /* | |
89a73cf5 | 797 | * Select card, as all following commands rely on that. |
7ea239d9 | 798 | */ |
af517150 DB |
799 | if (!mmc_host_is_spi(host)) { |
800 | err = mmc_select_card(card); | |
801 | if (err) | |
802 | goto free_card; | |
803 | } | |
7ea239d9 | 804 | |
6abaa0c9 PO |
805 | if (!oldcard) { |
806 | /* | |
af517150 | 807 | * Fetch and process extended CSD. |
6abaa0c9 | 808 | */ |
08ee80cc PR |
809 | |
810 | err = mmc_get_ext_csd(card, &ext_csd); | |
811 | if (err) | |
812 | goto free_card; | |
813 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 814 | if (err) |
6abaa0c9 | 815 | goto free_card; |
b676f039 PR |
816 | |
817 | /* If doing byte addressing, check if required to do sector | |
818 | * addressing. Handle the case of <2GB cards needing sector | |
819 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
820 | * ocr register has bit 30 set for sector addressing. | |
821 | */ | |
822 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
823 | mmc_card_set_blockaddr(card); | |
824 | ||
dfe86cba AH |
825 | /* Erase size depends on CSD and Extended CSD */ |
826 | mmc_set_erase_size(card); | |
6abaa0c9 | 827 | } |
7ea239d9 | 828 | |
709de99d CD |
829 | /* |
830 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 831 | * bit. This bit will be lost every time after a reset or power off. |
709de99d CD |
832 | */ |
833 | if (card->ext_csd.enhanced_area_en) { | |
834 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
b23cf0bd SJ |
835 | EXT_CSD_ERASE_GROUP_DEF, 1, |
836 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
837 | |
838 | if (err && err != -EBADMSG) | |
839 | goto free_card; | |
840 | ||
841 | if (err) { | |
842 | err = 0; | |
843 | /* | |
844 | * Just disable enhanced area off & sz | |
845 | * will try to enable ERASE_GROUP_DEF | |
846 | * during next time reinit | |
847 | */ | |
848 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
849 | card->ext_csd.enhanced_area_size = -EINVAL; | |
850 | } else { | |
851 | card->ext_csd.erase_group_def = 1; | |
852 | /* | |
853 | * enable ERASE_GRP_DEF successfully. | |
854 | * This will affect the erase size, so | |
855 | * here need to reset erase size | |
856 | */ | |
857 | mmc_set_erase_size(card); | |
858 | } | |
859 | } | |
860 | ||
41e2a489 PR |
861 | /* |
862 | * Ensure eMMC user default partition is enabled | |
863 | */ | |
371a689f AW |
864 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
865 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
866 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
867 | card->ext_csd.part_config, | |
868 | card->ext_csd.part_time); | |
869 | if (err && err != -EBADMSG) | |
870 | goto free_card; | |
41e2a489 PR |
871 | } |
872 | ||
bec8726a G |
873 | /* |
874 | * If the host supports the power_off_notify capability then | |
875 | * set the notification byte in the ext_csd register of device | |
876 | */ | |
877 | if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && | |
878 | (card->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION)) { | |
879 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
880 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
881 | EXT_CSD_POWER_ON, | |
882 | card->ext_csd.generic_cmd6_time); | |
883 | if (err && err != -EBADMSG) | |
884 | goto free_card; | |
885 | } | |
886 | ||
887 | if (!err) | |
888 | card->poweroff_notify_state = MMC_POWERED_ON; | |
889 | ||
89a73cf5 PO |
890 | /* |
891 | * Activate high speed (if supported) | |
892 | */ | |
893 | if ((card->ext_csd.hs_max_dtr != 0) && | |
894 | (host->caps & MMC_CAP_MMC_HIGHSPEED)) { | |
895 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
b23cf0bd SJ |
896 | EXT_CSD_HS_TIMING, 1, |
897 | card->ext_csd.generic_cmd6_time); | |
ef0b27d4 | 898 | if (err && err != -EBADMSG) |
89a73cf5 PO |
899 | goto free_card; |
900 | ||
ef0b27d4 | 901 | if (err) { |
a3c76eb9 | 902 | pr_warning("%s: switch to highspeed failed\n", |
ef0b27d4 AH |
903 | mmc_hostname(card->host)); |
904 | err = 0; | |
905 | } else { | |
906 | mmc_card_set_highspeed(card); | |
907 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
908 | } | |
89a73cf5 PO |
909 | } |
910 | ||
eb0d8f13 JC |
911 | /* |
912 | * Enable HPI feature (if supported) | |
913 | */ | |
914 | if (card->ext_csd.hpi) { | |
915 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
916 | EXT_CSD_HPI_MGMT, 1, 0); | |
917 | if (err && err != -EBADMSG) | |
918 | goto free_card; | |
919 | if (err) { | |
920 | pr_warning("%s: Enabling HPI failed\n", | |
921 | mmc_hostname(card->host)); | |
922 | err = 0; | |
923 | } else | |
924 | card->ext_csd.hpi_en = 1; | |
925 | } | |
926 | ||
7ea239d9 PO |
927 | /* |
928 | * Compute bus speed. | |
929 | */ | |
930 | max_dtr = (unsigned int)-1; | |
931 | ||
932 | if (mmc_card_highspeed(card)) { | |
933 | if (max_dtr > card->ext_csd.hs_max_dtr) | |
934 | max_dtr = card->ext_csd.hs_max_dtr; | |
935 | } else if (max_dtr > card->csd.max_dtr) { | |
936 | max_dtr = card->csd.max_dtr; | |
937 | } | |
938 | ||
939 | mmc_set_clock(host, max_dtr); | |
940 | ||
dfc13e84 | 941 | /* |
0f8d8ea6 | 942 | * Indicate DDR mode (if supported). |
dfc13e84 HP |
943 | */ |
944 | if (mmc_card_highspeed(card)) { | |
945 | if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
4c4cb171 PR |
946 | && ((host->caps & (MMC_CAP_1_8V_DDR | |
947 | MMC_CAP_UHS_DDR50)) | |
948 | == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 949 | ddr = MMC_1_8V_DDR_MODE; |
dfc13e84 | 950 | else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
4c4cb171 PR |
951 | && ((host->caps & (MMC_CAP_1_2V_DDR | |
952 | MMC_CAP_UHS_DDR50)) | |
953 | == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 954 | ddr = MMC_1_2V_DDR_MODE; |
dfc13e84 HP |
955 | } |
956 | ||
89a73cf5 | 957 | /* |
0f8d8ea6 | 958 | * Activate wide bus and DDR (if supported). |
89a73cf5 PO |
959 | */ |
960 | if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && | |
b30f8af3 | 961 | (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { |
22113efd AL |
962 | static unsigned ext_csd_bits[][2] = { |
963 | { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, | |
964 | { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, | |
965 | { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, | |
966 | }; | |
967 | static unsigned bus_widths[] = { | |
968 | MMC_BUS_WIDTH_8, | |
969 | MMC_BUS_WIDTH_4, | |
970 | MMC_BUS_WIDTH_1 | |
971 | }; | |
972 | unsigned idx, bus_width = 0; | |
973 | ||
974 | if (host->caps & MMC_CAP_8_BIT_DATA) | |
975 | idx = 0; | |
976 | else | |
977 | idx = 1; | |
978 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { | |
979 | bus_width = bus_widths[idx]; | |
980 | if (bus_width == MMC_BUS_WIDTH_1) | |
981 | ddr = 0; /* no DDR for 1-bit width */ | |
b87d8dbf G |
982 | err = mmc_select_powerclass(card, ext_csd_bits[idx][0], |
983 | ext_csd); | |
984 | if (err) | |
985 | pr_err("%s: power class selection to " | |
986 | "bus width %d failed\n", | |
987 | mmc_hostname(card->host), | |
988 | 1 << bus_width); | |
989 | ||
22113efd AL |
990 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
991 | EXT_CSD_BUS_WIDTH, | |
d3a8d95d | 992 | ext_csd_bits[idx][0], |
b23cf0bd | 993 | card->ext_csd.generic_cmd6_time); |
22113efd | 994 | if (!err) { |
4c4cb171 | 995 | mmc_set_bus_width(card->host, bus_width); |
08ee80cc | 996 | |
22113efd AL |
997 | /* |
998 | * If controller can't handle bus width test, | |
08ee80cc PR |
999 | * compare ext_csd previously read in 1 bit mode |
1000 | * against ext_csd at new bus width | |
22113efd AL |
1001 | */ |
1002 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
08ee80cc | 1003 | err = mmc_compare_ext_csds(card, |
08ee80cc PR |
1004 | bus_width); |
1005 | else | |
1006 | err = mmc_bus_test(card, bus_width); | |
22113efd AL |
1007 | if (!err) |
1008 | break; | |
1009 | } | |
b30f8af3 JL |
1010 | } |
1011 | ||
22113efd | 1012 | if (!err && ddr) { |
b87d8dbf G |
1013 | err = mmc_select_powerclass(card, ext_csd_bits[idx][1], |
1014 | ext_csd); | |
1015 | if (err) | |
1016 | pr_err("%s: power class selection to " | |
1017 | "bus width %d ddr %d failed\n", | |
1018 | mmc_hostname(card->host), | |
1019 | 1 << bus_width, ddr); | |
1020 | ||
22113efd | 1021 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
d3a8d95d AW |
1022 | EXT_CSD_BUS_WIDTH, |
1023 | ext_csd_bits[idx][1], | |
b23cf0bd | 1024 | card->ext_csd.generic_cmd6_time); |
22113efd | 1025 | } |
ef0b27d4 | 1026 | if (err) { |
a3c76eb9 | 1027 | pr_warning("%s: switch to bus width %d ddr %d " |
22113efd AL |
1028 | "failed\n", mmc_hostname(card->host), |
1029 | 1 << bus_width, ddr); | |
1030 | goto free_card; | |
1031 | } else if (ddr) { | |
4c4cb171 PR |
1032 | /* |
1033 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1034 | * signaling. | |
1035 | * | |
1036 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1037 | * | |
1038 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1039 | * in the JEDEC spec for DDR. | |
1040 | * | |
1041 | * Do not force change in vccq since we are obviously | |
1042 | * working and no change to vccq is needed. | |
1043 | * | |
1044 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1045 | */ | |
1046 | if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
1047 | err = mmc_set_signal_voltage(host, | |
1048 | MMC_SIGNAL_VOLTAGE_120, 0); | |
1049 | if (err) | |
1050 | goto err; | |
1051 | } | |
22113efd | 1052 | mmc_card_set_ddr_mode(card); |
4c4cb171 PR |
1053 | mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); |
1054 | mmc_set_bus_width(card->host, bus_width); | |
ef0b27d4 | 1055 | } |
89a73cf5 PO |
1056 | } |
1057 | ||
881d1c25 SJ |
1058 | /* |
1059 | * If cache size is higher than 0, this indicates | |
1060 | * the existence of cache and it can be turned on. | |
1061 | */ | |
1062 | if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && | |
1063 | card->ext_csd.cache_size > 0) { | |
1064 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1065 | EXT_CSD_CACHE_CTRL, 1, 0); | |
1066 | if (err && err != -EBADMSG) | |
1067 | goto free_card; | |
1068 | ||
1069 | /* | |
1070 | * Only if no error, cache is turned on successfully. | |
1071 | */ | |
1072 | card->ext_csd.cache_ctrl = err ? 0 : 1; | |
1073 | } | |
1074 | ||
6abaa0c9 PO |
1075 | if (!oldcard) |
1076 | host->card = card; | |
1077 | ||
08ee80cc | 1078 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1079 | return 0; |
6abaa0c9 PO |
1080 | |
1081 | free_card: | |
1082 | if (!oldcard) | |
1083 | mmc_remove_card(card); | |
1084 | err: | |
08ee80cc | 1085 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1086 | |
adf66a0d | 1087 | return err; |
6abaa0c9 PO |
1088 | } |
1089 | ||
1090 | /* | |
1091 | * Host is being removed. Free up the current card. | |
1092 | */ | |
1093 | static void mmc_remove(struct mmc_host *host) | |
1094 | { | |
1095 | BUG_ON(!host); | |
1096 | BUG_ON(!host->card); | |
1097 | ||
1098 | mmc_remove_card(host->card); | |
1099 | host->card = NULL; | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * Card detection callback from host. | |
1104 | */ | |
1105 | static void mmc_detect(struct mmc_host *host) | |
1106 | { | |
1107 | int err; | |
1108 | ||
1109 | BUG_ON(!host); | |
1110 | BUG_ON(!host->card); | |
1111 | ||
1112 | mmc_claim_host(host); | |
1113 | ||
1114 | /* | |
1115 | * Just check if our card has been removed. | |
1116 | */ | |
1117 | err = mmc_send_status(host->card, NULL); | |
1118 | ||
1119 | mmc_release_host(host); | |
1120 | ||
17b0429d | 1121 | if (err) { |
4101c16a | 1122 | mmc_remove(host); |
6abaa0c9 PO |
1123 | |
1124 | mmc_claim_host(host); | |
1125 | mmc_detach_bus(host); | |
7f7e4129 | 1126 | mmc_power_off(host); |
6abaa0c9 PO |
1127 | mmc_release_host(host); |
1128 | } | |
1129 | } | |
1130 | ||
6abaa0c9 PO |
1131 | /* |
1132 | * Suspend callback from host. | |
1133 | */ | |
95cdfb72 | 1134 | static int mmc_suspend(struct mmc_host *host) |
6abaa0c9 | 1135 | { |
c3805467 B |
1136 | int err = 0; |
1137 | ||
6abaa0c9 PO |
1138 | BUG_ON(!host); |
1139 | BUG_ON(!host->card); | |
7ea239d9 | 1140 | |
6abaa0c9 | 1141 | mmc_claim_host(host); |
c3805467 B |
1142 | if (mmc_card_can_sleep(host)) |
1143 | err = mmc_card_sleep(host); | |
1144 | else if (!mmc_host_is_spi(host)) | |
af517150 | 1145 | mmc_deselect_cards(host); |
6abaa0c9 | 1146 | host->card->state &= ~MMC_STATE_HIGHSPEED; |
7ea239d9 | 1147 | mmc_release_host(host); |
95cdfb72 | 1148 | |
c3805467 | 1149 | return err; |
6abaa0c9 | 1150 | } |
7ea239d9 | 1151 | |
6abaa0c9 PO |
1152 | /* |
1153 | * Resume callback from host. | |
1154 | * | |
1155 | * This function tries to determine if the same card is still present | |
1156 | * and, if so, restore all state to it. | |
1157 | */ | |
95cdfb72 | 1158 | static int mmc_resume(struct mmc_host *host) |
6abaa0c9 PO |
1159 | { |
1160 | int err; | |
1161 | ||
1162 | BUG_ON(!host); | |
1163 | BUG_ON(!host->card); | |
1164 | ||
1165 | mmc_claim_host(host); | |
8c75deae | 1166 | err = mmc_init_card(host, host->ocr, host->card); |
2986d0bf PO |
1167 | mmc_release_host(host); |
1168 | ||
95cdfb72 | 1169 | return err; |
6abaa0c9 PO |
1170 | } |
1171 | ||
12ae637f | 1172 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1173 | { |
12ae637f OBC |
1174 | int ret; |
1175 | ||
eae1aeee AH |
1176 | host->card->state &= ~MMC_STATE_HIGHSPEED; |
1177 | mmc_claim_host(host); | |
12ae637f | 1178 | ret = mmc_init_card(host, host->ocr, host->card); |
eae1aeee | 1179 | mmc_release_host(host); |
12ae637f OBC |
1180 | |
1181 | return ret; | |
eae1aeee AH |
1182 | } |
1183 | ||
b1ebe384 JL |
1184 | static int mmc_sleep(struct mmc_host *host) |
1185 | { | |
1186 | struct mmc_card *card = host->card; | |
1187 | int err = -ENOSYS; | |
1188 | ||
1189 | if (card && card->ext_csd.rev >= 3) { | |
1190 | err = mmc_card_sleepawake(host, 1); | |
1191 | if (err < 0) | |
1192 | pr_debug("%s: Error %d while putting card into sleep", | |
1193 | mmc_hostname(host), err); | |
1194 | } | |
1195 | ||
1196 | return err; | |
1197 | } | |
1198 | ||
1199 | static int mmc_awake(struct mmc_host *host) | |
1200 | { | |
1201 | struct mmc_card *card = host->card; | |
1202 | int err = -ENOSYS; | |
1203 | ||
1204 | if (card && card->ext_csd.rev >= 3) { | |
1205 | err = mmc_card_sleepawake(host, 0); | |
1206 | if (err < 0) | |
1207 | pr_debug("%s: Error %d while awaking sleeping card", | |
1208 | mmc_hostname(host), err); | |
1209 | } | |
1210 | ||
1211 | return err; | |
1212 | } | |
1213 | ||
6abaa0c9 | 1214 | static const struct mmc_bus_ops mmc_ops = { |
b1ebe384 JL |
1215 | .awake = mmc_awake, |
1216 | .sleep = mmc_sleep, | |
9feae246 AH |
1217 | .remove = mmc_remove, |
1218 | .detect = mmc_detect, | |
1219 | .suspend = NULL, | |
1220 | .resume = NULL, | |
eae1aeee | 1221 | .power_restore = mmc_power_restore, |
9feae246 AH |
1222 | }; |
1223 | ||
1224 | static const struct mmc_bus_ops mmc_ops_unsafe = { | |
b1ebe384 JL |
1225 | .awake = mmc_awake, |
1226 | .sleep = mmc_sleep, | |
6abaa0c9 PO |
1227 | .remove = mmc_remove, |
1228 | .detect = mmc_detect, | |
1229 | .suspend = mmc_suspend, | |
1230 | .resume = mmc_resume, | |
eae1aeee | 1231 | .power_restore = mmc_power_restore, |
6abaa0c9 PO |
1232 | }; |
1233 | ||
9feae246 AH |
1234 | static void mmc_attach_bus_ops(struct mmc_host *host) |
1235 | { | |
1236 | const struct mmc_bus_ops *bus_ops; | |
1237 | ||
71d7d3d1 | 1238 | if (!mmc_card_is_removable(host)) |
9feae246 AH |
1239 | bus_ops = &mmc_ops_unsafe; |
1240 | else | |
1241 | bus_ops = &mmc_ops; | |
1242 | mmc_attach_bus(host, bus_ops); | |
1243 | } | |
1244 | ||
6abaa0c9 PO |
1245 | /* |
1246 | * Starting point for MMC card init. | |
1247 | */ | |
807e8e40 | 1248 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1249 | { |
1250 | int err; | |
807e8e40 | 1251 | u32 ocr; |
6abaa0c9 PO |
1252 | |
1253 | BUG_ON(!host); | |
d84075c8 | 1254 | WARN_ON(!host->claimed); |
6abaa0c9 | 1255 | |
44669034 SNX |
1256 | /* Set correct bus mode for MMC before attempting attach */ |
1257 | if (!mmc_host_is_spi(host)) | |
1258 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1259 | ||
807e8e40 AR |
1260 | err = mmc_send_op_cond(host, 0, &ocr); |
1261 | if (err) | |
1262 | return err; | |
1263 | ||
9feae246 | 1264 | mmc_attach_bus_ops(host); |
8f230f45 TI |
1265 | if (host->ocr_avail_mmc) |
1266 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1267 | |
af517150 DB |
1268 | /* |
1269 | * We need to get OCR a different way for SPI. | |
1270 | */ | |
1271 | if (mmc_host_is_spi(host)) { | |
1272 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1273 | if (err) | |
1274 | goto err; | |
1275 | } | |
1276 | ||
6abaa0c9 PO |
1277 | /* |
1278 | * Sanity check the voltages that the card claims to | |
1279 | * support. | |
1280 | */ | |
1281 | if (ocr & 0x7F) { | |
a3c76eb9 | 1282 | pr_warning("%s: card claims to support voltages " |
6abaa0c9 PO |
1283 | "below the defined range. These will be ignored.\n", |
1284 | mmc_hostname(host)); | |
1285 | ocr &= ~0x7F; | |
1286 | } | |
1287 | ||
1288 | host->ocr = mmc_select_voltage(host, ocr); | |
1289 | ||
1290 | /* | |
1291 | * Can we support the voltage of the card? | |
1292 | */ | |
109b5bed PO |
1293 | if (!host->ocr) { |
1294 | err = -EINVAL; | |
6abaa0c9 | 1295 | goto err; |
109b5bed | 1296 | } |
6abaa0c9 PO |
1297 | |
1298 | /* | |
1299 | * Detect and init the card. | |
1300 | */ | |
8c75deae | 1301 | err = mmc_init_card(host, host->ocr, NULL); |
17b0429d | 1302 | if (err) |
6abaa0c9 PO |
1303 | goto err; |
1304 | ||
1305 | mmc_release_host(host); | |
4101c16a | 1306 | err = mmc_add_card(host->card); |
807e8e40 | 1307 | mmc_claim_host(host); |
7ea239d9 | 1308 | if (err) |
2986d0bf | 1309 | goto remove_card; |
7ea239d9 PO |
1310 | |
1311 | return 0; | |
1312 | ||
2986d0bf | 1313 | remove_card: |
807e8e40 | 1314 | mmc_release_host(host); |
6abaa0c9 | 1315 | mmc_remove_card(host->card); |
2986d0bf | 1316 | mmc_claim_host(host); |
807e8e40 | 1317 | host->card = NULL; |
7ea239d9 PO |
1318 | err: |
1319 | mmc_detach_bus(host); | |
7ea239d9 | 1320 | |
a3c76eb9 | 1321 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1322 | mmc_hostname(host), err); |
1323 | ||
adf66a0d | 1324 | return err; |
7ea239d9 | 1325 | } |