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