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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> | |
81f8a7be | 14 | #include <linux/of.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
0205a904 | 16 | #include <linux/stat.h> |
0cb403a2 | 17 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
18 | |
19 | #include <linux/mmc/host.h> | |
20 | #include <linux/mmc/card.h> | |
21 | #include <linux/mmc/mmc.h> | |
22 | ||
23 | #include "core.h" | |
436f8daa | 24 | #include "host.h" |
4101c16a | 25 | #include "bus.h" |
7ea239d9 | 26 | #include "mmc_ops.h" |
4c4cb171 | 27 | #include "sd_ops.h" |
7ea239d9 | 28 | |
fe1b5700 UH |
29 | #define DEFAULT_CMD6_TIMEOUT_MS 500 |
30 | ||
7ea239d9 PO |
31 | static const unsigned int tran_exp[] = { |
32 | 10000, 100000, 1000000, 10000000, | |
33 | 0, 0, 0, 0 | |
34 | }; | |
35 | ||
36 | static const unsigned char tran_mant[] = { | |
37 | 0, 10, 12, 13, 15, 20, 25, 30, | |
38 | 35, 40, 45, 50, 55, 60, 70, 80, | |
39 | }; | |
40 | ||
41 | static const unsigned int tacc_exp[] = { | |
42 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
43 | }; | |
44 | ||
45 | static const unsigned int tacc_mant[] = { | |
46 | 0, 10, 12, 13, 15, 20, 25, 30, | |
47 | 35, 40, 45, 50, 55, 60, 70, 80, | |
48 | }; | |
49 | ||
5320226a P |
50 | static const struct mmc_fixup mmc_ext_csd_fixups[] = { |
51 | /* | |
52 | * Certain Hynix eMMC 4.41 cards might get broken when HPI feature | |
53 | * is used so disable the HPI feature for such buggy cards. | |
54 | */ | |
55 | MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, | |
56 | 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), | |
57 | ||
58 | END_FIXUP | |
59 | }; | |
60 | ||
7ea239d9 PO |
61 | #define UNSTUFF_BITS(resp,start,size) \ |
62 | ({ \ | |
63 | const int __size = size; \ | |
64 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
65 | const int __off = 3 - ((start) / 32); \ | |
66 | const int __shft = (start) & 31; \ | |
67 | u32 __res; \ | |
68 | \ | |
69 | __res = resp[__off] >> __shft; \ | |
70 | if (__size + __shft > 32) \ | |
71 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
72 | __res & __mask; \ | |
73 | }) | |
74 | ||
75 | /* | |
76 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
77 | */ | |
bd766312 | 78 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
79 | { |
80 | u32 *resp = card->raw_cid; | |
81 | ||
82 | /* | |
83 | * The selection of the format here is based upon published | |
84 | * specs from sandisk and from what people have reported. | |
85 | */ | |
86 | switch (card->csd.mmca_vsn) { | |
87 | case 0: /* MMC v1.0 - v1.2 */ | |
88 | case 1: /* MMC v1.4 */ | |
89 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
90 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
91 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
92 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
93 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
94 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
95 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
96 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
97 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
98 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
99 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
100 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
101 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
102 | break; | |
103 | ||
104 | case 2: /* MMC v2.0 - v2.2 */ | |
105 | case 3: /* MMC v3.1 - v3.3 */ | |
106 | case 4: /* MMC v4 */ | |
107 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
108 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
109 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
110 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
111 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
112 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
113 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
114 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 115 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
116 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
117 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
118 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
119 | break; | |
120 | ||
121 | default: | |
a3c76eb9 | 122 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 123 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 124 | return -EINVAL; |
7ea239d9 | 125 | } |
bd766312 PO |
126 | |
127 | return 0; | |
7ea239d9 PO |
128 | } |
129 | ||
dfe86cba AH |
130 | static void mmc_set_erase_size(struct mmc_card *card) |
131 | { | |
132 | if (card->ext_csd.erase_group_def & 1) | |
133 | card->erase_size = card->ext_csd.hc_erase_size; | |
134 | else | |
135 | card->erase_size = card->csd.erase_size; | |
136 | ||
137 | mmc_init_erase(card); | |
138 | } | |
139 | ||
7ea239d9 PO |
140 | /* |
141 | * Given a 128-bit response, decode to our card CSD structure. | |
142 | */ | |
bd766312 | 143 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
144 | { |
145 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 146 | unsigned int e, m, a, b; |
7ea239d9 PO |
147 | u32 *resp = card->raw_csd; |
148 | ||
149 | /* | |
150 | * We only understand CSD structure v1.1 and v1.2. | |
151 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 152 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 153 | */ |
6da24b78 KP |
154 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
155 | if (csd->structure == 0) { | |
a3c76eb9 | 156 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 157 | mmc_hostname(card->host), csd->structure); |
bd766312 | 158 | return -EINVAL; |
7ea239d9 PO |
159 | } |
160 | ||
161 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
162 | m = UNSTUFF_BITS(resp, 115, 4); | |
163 | e = UNSTUFF_BITS(resp, 112, 3); | |
164 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
165 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
166 | ||
167 | m = UNSTUFF_BITS(resp, 99, 4); | |
168 | e = UNSTUFF_BITS(resp, 96, 3); | |
169 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
170 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
171 | ||
172 | e = UNSTUFF_BITS(resp, 47, 3); | |
173 | m = UNSTUFF_BITS(resp, 62, 12); | |
174 | csd->capacity = (1 + m) << (e + 2); | |
175 | ||
176 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
177 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
178 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
179 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 180 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
181 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
182 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
183 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 184 | |
dfe86cba AH |
185 | if (csd->write_blkbits >= 9) { |
186 | a = UNSTUFF_BITS(resp, 42, 5); | |
187 | b = UNSTUFF_BITS(resp, 37, 5); | |
188 | csd->erase_size = (a + 1) * (b + 1); | |
189 | csd->erase_size <<= csd->write_blkbits - 9; | |
190 | } | |
191 | ||
bd766312 | 192 | return 0; |
7ea239d9 PO |
193 | } |
194 | ||
96cf5f02 SJ |
195 | static void mmc_select_card_type(struct mmc_card *card) |
196 | { | |
197 | struct mmc_host *host = card->host; | |
0a5b6438 | 198 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 199 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 200 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 201 | unsigned int avail_type = 0; |
96cf5f02 | 202 | |
2415c0ef SJ |
203 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
204 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 205 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
206 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
207 | } | |
96cf5f02 SJ |
208 | |
209 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 210 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 211 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
212 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
213 | } | |
96cf5f02 | 214 | |
2415c0ef SJ |
215 | if (caps & MMC_CAP_1_8V_DDR && |
216 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 217 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
218 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
219 | } | |
220 | ||
221 | if (caps & MMC_CAP_1_2V_DDR && | |
222 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
223 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
224 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
225 | } | |
96cf5f02 | 226 | |
2415c0ef SJ |
227 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
228 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 229 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
230 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
231 | } | |
232 | ||
233 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
234 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 235 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
236 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
237 | } | |
96cf5f02 | 238 | |
0a5b6438 SJ |
239 | if (caps2 & MMC_CAP2_HS400_1_8V && |
240 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
241 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
242 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
243 | } | |
244 | ||
245 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
246 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
247 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
248 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
249 | } | |
250 | ||
81ac2af6 SL |
251 | if ((caps2 & MMC_CAP2_HS400_ES) && |
252 | card->ext_csd.strobe_support && | |
253 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
254 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
255 | ||
96cf5f02 | 256 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 257 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 258 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
259 | } |
260 | ||
b4493eea GS |
261 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
262 | { | |
994324bb GS |
263 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
264 | ||
265 | /* | |
266 | * Disable these attributes by default | |
267 | */ | |
268 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
269 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
270 | |
271 | /* | |
272 | * Enhanced area feature support -- check whether the eMMC | |
273 | * card has the Enhanced area enabled. If so, export enhanced | |
274 | * area offset and size to user by adding sysfs interface. | |
275 | */ | |
276 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
277 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
278 | if (card->ext_csd.partition_setting_completed) { |
279 | hc_erase_grp_sz = | |
280 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
281 | hc_wp_grp_sz = | |
282 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 283 | |
994324bb GS |
284 | /* |
285 | * calculate the enhanced data area offset, in bytes | |
286 | */ | |
287 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
288 | (((unsigned long long)ext_csd[139]) << 24) + |
289 | (((unsigned long long)ext_csd[138]) << 16) + | |
290 | (((unsigned long long)ext_csd[137]) << 8) + | |
291 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
292 | if (mmc_card_blockaddr(card)) |
293 | card->ext_csd.enhanced_area_offset <<= 9; | |
294 | /* | |
295 | * calculate the enhanced data area size, in kilobytes | |
296 | */ | |
297 | card->ext_csd.enhanced_area_size = | |
298 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
299 | ext_csd[140]; | |
300 | card->ext_csd.enhanced_area_size *= | |
301 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
302 | card->ext_csd.enhanced_area_size <<= 9; | |
303 | } else { | |
304 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
305 | mmc_hostname(card->host)); | |
306 | } | |
b4493eea GS |
307 | } |
308 | } | |
309 | ||
310 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
311 | { | |
b4493eea | 312 | int idx; |
994324bb GS |
313 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
314 | unsigned int part_size; | |
b4493eea GS |
315 | |
316 | /* | |
317 | * General purpose partition feature support -- | |
318 | * If ext_csd has the size of general purpose partitions, | |
319 | * set size, part_cfg, partition name in mmc_part. | |
320 | */ | |
321 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
322 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
323 | hc_erase_grp_sz = |
324 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
325 | hc_wp_grp_sz = | |
326 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
327 | |
328 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
329 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
330 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
331 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
332 | continue; | |
994324bb GS |
333 | if (card->ext_csd.partition_setting_completed == 0) { |
334 | pr_warn("%s: has partition size defined without partition complete\n", | |
335 | mmc_hostname(card->host)); | |
336 | break; | |
337 | } | |
b4493eea GS |
338 | part_size = |
339 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
340 | << 16) + | |
341 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
342 | << 8) + | |
343 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
344 | part_size *= (size_t)(hc_erase_grp_sz * | |
345 | hc_wp_grp_sz); | |
346 | mmc_part_add(card, part_size << 19, | |
347 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
348 | "gp%d", idx, false, | |
349 | MMC_BLK_DATA_AREA_GP); | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
1c447116 AH |
354 | /* Minimum partition switch timeout in milliseconds */ |
355 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
356 | ||
08ee80cc PR |
357 | /* |
358 | * Decode extended CSD. | |
359 | */ | |
076ec38a | 360 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 361 | { |
e0c368d5 NJ |
362 | int err = 0, idx; |
363 | unsigned int part_size; | |
81f8a7be HG |
364 | struct device_node *np; |
365 | bool broken_hpi = false; | |
08ee80cc | 366 | |
6da24b78 | 367 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 368 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 369 | if (card->csd.structure == 3) { |
f39b2dd9 | 370 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 371 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 372 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 373 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
374 | err = -EINVAL; |
375 | goto out; | |
376 | } | |
377 | } | |
378 | ||
81f8a7be HG |
379 | np = mmc_of_find_child_device(card->host, 0); |
380 | if (np && of_device_is_compatible(np, "mmc-card")) | |
381 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
382 | of_node_put(np); | |
383 | ||
03a59437 RI |
384 | /* |
385 | * The EXT_CSD format is meant to be forward compatible. As long | |
386 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
387 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
388 | */ | |
b1ebe384 | 389 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 390 | |
5320226a P |
391 | /* fixup device after ext_csd revision field is updated */ |
392 | mmc_fixup_device(card, mmc_ext_csd_fixups); | |
393 | ||
f39b2dd9 PR |
394 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
395 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
396 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
397 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 398 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
399 | card->ext_csd.sectors = |
400 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
401 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
402 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
403 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
404 | |
405 | /* Cards with density > 2GiB are sector addressed */ | |
406 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
407 | mmc_card_set_blockaddr(card); |
408 | } | |
96cf5f02 | 409 | |
81ac2af6 | 410 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 411 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 412 | mmc_select_card_type(card); |
7ea239d9 | 413 | |
f39b2dd9 PR |
414 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
415 | card->ext_csd.raw_erase_timeout_mult = | |
416 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
417 | card->ext_csd.raw_hc_erase_grp_size = | |
418 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
419 | if (card->ext_csd.rev >= 3) { |
420 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
421 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
422 | ||
423 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
424 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
425 | /* Some eMMC set the value too low so set a minimum */ |
426 | if (card->ext_csd.part_time && | |
427 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
428 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
429 | |
430 | /* Sleep / awake timeout in 100ns units */ | |
431 | if (sa_shift > 0 && sa_shift <= 0x17) | |
432 | card->ext_csd.sa_timeout = | |
433 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
434 | card->ext_csd.erase_group_def = |
435 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
436 | card->ext_csd.hc_erase_timeout = 300 * | |
437 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
438 | card->ext_csd.hc_erase_size = | |
439 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
440 | |
441 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
442 | |
443 | /* | |
444 | * There are two boot regions of equal size, defined in | |
445 | * multiples of 128K. | |
446 | */ | |
e0c368d5 NJ |
447 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
448 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
449 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
450 | mmc_part_add(card, part_size, | |
451 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
452 | "boot%d", idx, true, |
453 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
454 | } |
455 | } | |
dfe86cba AH |
456 | } |
457 | ||
f39b2dd9 | 458 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 459 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
460 | card->ext_csd.raw_sec_trim_mult = |
461 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
462 | card->ext_csd.raw_sec_erase_mult = | |
463 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
464 | card->ext_csd.raw_sec_feature_support = | |
465 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
466 | card->ext_csd.raw_trim_mult = | |
467 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 468 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 469 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 470 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
471 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
472 | EXT_CSD_PART_SETTING_COMPLETED) | |
473 | card->ext_csd.partition_setting_completed = 1; | |
474 | else | |
475 | card->ext_csd.partition_setting_completed = 0; | |
476 | ||
b4493eea | 477 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 478 | |
b4493eea | 479 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 480 | |
dfe86cba AH |
481 | card->ext_csd.sec_trim_mult = |
482 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
483 | card->ext_csd.sec_erase_mult = | |
484 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
485 | card->ext_csd.sec_feature_support = | |
486 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
487 | card->ext_csd.trim_timeout = 300 * | |
488 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
489 | |
490 | /* | |
491 | * Note that the call to mmc_part_add above defaults to read | |
492 | * only. If this default assumption is changed, the call must | |
493 | * take into account the value of boot_locked below. | |
494 | */ | |
495 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
496 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
497 | |
498 | /* Save power class values */ | |
499 | card->ext_csd.raw_pwr_cl_52_195 = | |
500 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
501 | card->ext_csd.raw_pwr_cl_26_195 = | |
502 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
503 | card->ext_csd.raw_pwr_cl_52_360 = | |
504 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
505 | card->ext_csd.raw_pwr_cl_26_360 = | |
506 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
507 | card->ext_csd.raw_pwr_cl_200_195 = | |
508 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
509 | card->ext_csd.raw_pwr_cl_200_360 = | |
510 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
511 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
512 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
513 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
514 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
515 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
516 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
517 | } |
518 | ||
b2499518 | 519 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
520 | /* Adjust production date as per JEDEC JESD84-B451 */ |
521 | if (card->cid.year < 2010) | |
522 | card->cid.year += 16; | |
523 | ||
950d56ac | 524 | /* check whether the eMMC card supports BKOPS */ |
5320226a P |
525 | if (!mmc_card_broken_hpi(card) && |
526 | ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
950d56ac | 527 | card->ext_csd.bkops = 1; |
0501be64 AS |
528 | card->ext_csd.man_bkops_en = |
529 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
530 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
531 | card->ext_csd.raw_bkops_status = |
532 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 | 533 | if (!card->ext_csd.man_bkops_en) |
4ec96b4c | 534 | pr_debug("%s: MAN_BKOPS_EN bit is not set\n", |
950d56ac JC |
535 | mmc_hostname(card->host)); |
536 | } | |
537 | ||
eb0d8f13 | 538 | /* check whether the eMMC card supports HPI */ |
5320226a P |
539 | if (!mmc_card_broken_hpi(card) && |
540 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { | |
eb0d8f13 JC |
541 | card->ext_csd.hpi = 1; |
542 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
543 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
544 | else | |
545 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
546 | /* | |
547 | * Indicate the maximum timeout to close | |
548 | * a command interrupted by HPI | |
549 | */ | |
550 | card->ext_csd.out_of_int_time = | |
551 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
552 | } | |
553 | ||
f4c5522b | 554 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 555 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
556 | |
557 | /* | |
558 | * RPMB regions are defined in multiples of 128K. | |
559 | */ | |
560 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 561 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
562 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
563 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
564 | "rpmb", 0, false, | |
565 | MMC_BLK_DATA_AREA_RPMB); | |
566 | } | |
b2499518 | 567 | } |
f4c5522b | 568 | |
5238acbe | 569 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
570 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
571 | card->erased_byte = 0xFF; | |
572 | else | |
573 | card->erased_byte = 0x0; | |
574 | ||
336c716a | 575 | /* eMMC v4.5 or later */ |
fe1b5700 | 576 | card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; |
bec8726a | 577 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
578 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
579 | ||
b23cf0bd SJ |
580 | card->ext_csd.generic_cmd6_time = 10 * |
581 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
582 | card->ext_csd.power_off_longtime = 10 * |
583 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 584 | |
336c716a SJ |
585 | card->ext_csd.cache_size = |
586 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
587 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
588 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
589 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
590 | |
591 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
592 | card->ext_csd.data_sector_size = 4096; | |
593 | else | |
594 | card->ext_csd.data_sector_size = 512; | |
595 | ||
596 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
597 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
598 | card->ext_csd.data_tag_unit_size = | |
599 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
600 | (card->ext_csd.data_sector_size); | |
601 | } else { | |
602 | card->ext_csd.data_tag_unit_size = 0; | |
603 | } | |
abd9ac14 SJ |
604 | |
605 | card->ext_csd.max_packed_writes = | |
606 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
607 | card->ext_csd.max_packed_reads = | |
608 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
609 | } else { |
610 | card->ext_csd.data_sector_size = 512; | |
336c716a | 611 | } |
881d1c25 | 612 | |
0f762426 GG |
613 | /* eMMC v5 or later */ |
614 | if (card->ext_csd.rev >= 7) { | |
615 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
616 | MMC_FIRMWARE_LEN); | |
617 | card->ext_csd.ffu_capable = | |
618 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
619 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
620 | } | |
7ea239d9 | 621 | out: |
08ee80cc PR |
622 | return err; |
623 | } | |
624 | ||
076ec38a UH |
625 | static int mmc_read_ext_csd(struct mmc_card *card) |
626 | { | |
c197787c | 627 | u8 *ext_csd; |
076ec38a UH |
628 | int err; |
629 | ||
c197787c UH |
630 | if (!mmc_can_ext_csd(card)) |
631 | return 0; | |
632 | ||
076ec38a | 633 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
634 | if (err) { |
635 | /* If the host or the card can't do the switch, | |
636 | * fail more gracefully. */ | |
637 | if ((err != -EINVAL) | |
638 | && (err != -ENOSYS) | |
639 | && (err != -EFAULT)) | |
640 | return err; | |
641 | ||
642 | /* | |
643 | * High capacity cards should have this "magic" size | |
644 | * stored in their CSD. | |
645 | */ | |
646 | if (card->csd.capacity == (4096 * 512)) { | |
647 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
648 | mmc_hostname(card->host)); | |
649 | } else { | |
650 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
651 | mmc_hostname(card->host)); | |
652 | err = 0; | |
653 | } | |
654 | ||
076ec38a | 655 | return err; |
c197787c | 656 | } |
076ec38a UH |
657 | |
658 | err = mmc_decode_ext_csd(card, ext_csd); | |
659 | kfree(ext_csd); | |
660 | return err; | |
661 | } | |
662 | ||
f39b2dd9 | 663 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
664 | { |
665 | u8 *bw_ext_csd; | |
666 | int err; | |
667 | ||
f39b2dd9 PR |
668 | if (bus_width == MMC_BUS_WIDTH_1) |
669 | return 0; | |
670 | ||
08ee80cc | 671 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
672 | if (err) |
673 | return err; | |
08ee80cc | 674 | |
08ee80cc | 675 | /* only compare read only fields */ |
dd13b4ed | 676 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 677 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 678 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 679 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 680 | (card->ext_csd.rev == |
08ee80cc | 681 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 682 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 683 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 684 | (card->ext_csd.raw_card_type == |
08ee80cc | 685 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 686 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 687 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 688 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 689 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 690 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 691 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 692 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 693 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 694 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 695 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 696 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 697 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 698 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 699 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 700 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 701 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
702 | (card->ext_csd.raw_sectors[0] == |
703 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
704 | (card->ext_csd.raw_sectors[1] == | |
705 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
706 | (card->ext_csd.raw_sectors[2] == | |
707 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
708 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
709 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
710 | (card->ext_csd.raw_pwr_cl_52_195 == | |
711 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
712 | (card->ext_csd.raw_pwr_cl_26_195 == | |
713 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
714 | (card->ext_csd.raw_pwr_cl_52_360 == | |
715 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
716 | (card->ext_csd.raw_pwr_cl_26_360 == | |
717 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
718 | (card->ext_csd.raw_pwr_cl_200_195 == | |
719 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
720 | (card->ext_csd.raw_pwr_cl_200_360 == | |
721 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
722 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
723 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
724 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
725 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
726 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
727 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
728 | ||
08ee80cc PR |
729 | if (err) |
730 | err = -EINVAL; | |
731 | ||
00b41b58 | 732 | kfree(bw_ext_csd); |
7ea239d9 PO |
733 | return err; |
734 | } | |
735 | ||
51ec92e2 PO |
736 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
737 | card->raw_cid[2], card->raw_cid[3]); | |
738 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
739 | card->raw_csd[2], card->raw_csd[3]); | |
740 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
741 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
742 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 743 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
744 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
745 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
746 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
747 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 748 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 749 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
750 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
751 | card->ext_csd.enhanced_area_offset); | |
752 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
753 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
754 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
5fb06af7 | 755 | MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); |
51ec92e2 | 756 | |
0f762426 GG |
757 | static ssize_t mmc_fwrev_show(struct device *dev, |
758 | struct device_attribute *attr, | |
759 | char *buf) | |
760 | { | |
761 | struct mmc_card *card = mmc_dev_to_card(dev); | |
762 | ||
763 | if (card->ext_csd.rev < 7) { | |
764 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
765 | } else { | |
766 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
767 | card->ext_csd.fwrev); | |
768 | } | |
769 | } | |
770 | ||
771 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
772 | ||
6825a606 BP |
773 | static ssize_t mmc_dsr_show(struct device *dev, |
774 | struct device_attribute *attr, | |
775 | char *buf) | |
776 | { | |
777 | struct mmc_card *card = mmc_dev_to_card(dev); | |
778 | struct mmc_host *host = card->host; | |
779 | ||
780 | if (card->csd.dsr_imp && host->dsr_req) | |
781 | return sprintf(buf, "0x%x\n", host->dsr); | |
782 | else | |
783 | /* return default DSR value */ | |
784 | return sprintf(buf, "0x%x\n", 0x404); | |
785 | } | |
786 | ||
787 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); | |
788 | ||
51ec92e2 PO |
789 | static struct attribute *mmc_std_attrs[] = { |
790 | &dev_attr_cid.attr, | |
791 | &dev_attr_csd.attr, | |
792 | &dev_attr_date.attr, | |
dfe86cba AH |
793 | &dev_attr_erase_size.attr, |
794 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 795 | &dev_attr_fwrev.attr, |
0f762426 | 796 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
797 | &dev_attr_hwrev.attr, |
798 | &dev_attr_manfid.attr, | |
799 | &dev_attr_name.attr, | |
800 | &dev_attr_oemid.attr, | |
51e7e8b6 | 801 | &dev_attr_prv.attr, |
51ec92e2 | 802 | &dev_attr_serial.attr, |
709de99d CD |
803 | &dev_attr_enhanced_area_offset.attr, |
804 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
805 | &dev_attr_raw_rpmb_size_mult.attr, |
806 | &dev_attr_rel_sectors.attr, | |
5fb06af7 | 807 | &dev_attr_ocr.attr, |
6825a606 | 808 | &dev_attr_dsr.attr, |
51ec92e2 PO |
809 | NULL, |
810 | }; | |
d1e58212 | 811 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
812 | |
813 | static struct device_type mmc_type = { | |
d1e58212 | 814 | .groups = mmc_std_groups, |
51ec92e2 PO |
815 | }; |
816 | ||
b87d8dbf G |
817 | /* |
818 | * Select the PowerClass for the current bus width | |
819 | * If power class is defined for 4/8 bit bus in the | |
820 | * extended CSD register, select it by executing the | |
821 | * mmc_switch command. | |
822 | */ | |
2385049d SJ |
823 | static int __mmc_select_powerclass(struct mmc_card *card, |
824 | unsigned int bus_width) | |
b87d8dbf | 825 | { |
2385049d SJ |
826 | struct mmc_host *host = card->host; |
827 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 828 | unsigned int pwrclass_val = 0; |
2385049d | 829 | int err = 0; |
b87d8dbf | 830 | |
b87d8dbf G |
831 | switch (1 << host->ios.vdd) { |
832 | case MMC_VDD_165_195: | |
2385049d SJ |
833 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
834 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
835 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 836 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
837 | ext_csd->raw_pwr_cl_52_195 : |
838 | ext_csd->raw_pwr_cl_ddr_52_195; | |
839 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
840 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 841 | break; |
93fc5a47 SJ |
842 | case MMC_VDD_27_28: |
843 | case MMC_VDD_28_29: | |
844 | case MMC_VDD_29_30: | |
845 | case MMC_VDD_30_31: | |
846 | case MMC_VDD_31_32: | |
b87d8dbf G |
847 | case MMC_VDD_32_33: |
848 | case MMC_VDD_33_34: | |
849 | case MMC_VDD_34_35: | |
850 | case MMC_VDD_35_36: | |
2385049d SJ |
851 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
852 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
853 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 854 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
855 | ext_csd->raw_pwr_cl_52_360 : |
856 | ext_csd->raw_pwr_cl_ddr_52_360; | |
857 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
858 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
859 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
860 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
861 | break; |
862 | default: | |
6606110d JP |
863 | pr_warn("%s: Voltage range not supported for power class\n", |
864 | mmc_hostname(host)); | |
b87d8dbf G |
865 | return -EINVAL; |
866 | } | |
867 | ||
b87d8dbf G |
868 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
869 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
870 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
871 | else | |
872 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
873 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
874 | ||
875 | /* If the power class is different from the default value */ | |
876 | if (pwrclass_val > 0) { | |
877 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
878 | EXT_CSD_POWER_CLASS, | |
879 | pwrclass_val, | |
71fe3eb0 | 880 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
881 | } |
882 | ||
883 | return err; | |
884 | } | |
885 | ||
2385049d SJ |
886 | static int mmc_select_powerclass(struct mmc_card *card) |
887 | { | |
888 | struct mmc_host *host = card->host; | |
889 | u32 bus_width, ext_csd_bits; | |
890 | int err, ddr; | |
891 | ||
892 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 893 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
894 | return 0; |
895 | ||
896 | bus_width = host->ios.bus_width; | |
897 | /* Power class values are defined only for 4/8 bit bus */ | |
898 | if (bus_width == MMC_BUS_WIDTH_1) | |
899 | return 0; | |
900 | ||
901 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
902 | if (ddr) | |
903 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
904 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
905 | else | |
906 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
907 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
908 | ||
909 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
910 | if (err) | |
911 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
912 | mmc_hostname(host), 1 << bus_width, ddr); | |
913 | ||
914 | return err; | |
915 | } | |
916 | ||
a4924c71 | 917 | /* |
577fb131 | 918 | * Set the bus speed for the selected speed mode. |
a4924c71 | 919 | */ |
577fb131 SJ |
920 | static void mmc_set_bus_speed(struct mmc_card *card) |
921 | { | |
922 | unsigned int max_dtr = (unsigned int)-1; | |
923 | ||
0a5b6438 SJ |
924 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
925 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
926 | max_dtr = card->ext_csd.hs200_max_dtr; |
927 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
928 | max_dtr = card->ext_csd.hs_max_dtr; | |
929 | else if (max_dtr > card->csd.max_dtr) | |
930 | max_dtr = card->csd.max_dtr; | |
931 | ||
932 | mmc_set_clock(card->host, max_dtr); | |
933 | } | |
934 | ||
935 | /* | |
936 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
937 | * If the bus width is changed successfully, return the selected width value. | |
938 | * Zero is returned instead of error value if the wide width is not supported. | |
939 | */ | |
940 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 941 | { |
a4924c71 | 942 | static unsigned ext_csd_bits[] = { |
a4924c71 | 943 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 944 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
945 | }; |
946 | static unsigned bus_widths[] = { | |
a4924c71 | 947 | MMC_BUS_WIDTH_8, |
577fb131 | 948 | MMC_BUS_WIDTH_4, |
a4924c71 | 949 | }; |
577fb131 SJ |
950 | struct mmc_host *host = card->host; |
951 | unsigned idx, bus_width = 0; | |
952 | int err = 0; | |
a4924c71 | 953 | |
1c2d26e3 | 954 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
955 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
956 | return 0; | |
a4924c71 | 957 | |
577fb131 | 958 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
959 | |
960 | /* | |
961 | * Unlike SD, MMC cards dont have a configuration register to notify | |
962 | * supported bus width. So bus test command should be run to identify | |
963 | * the supported bus width or compare the ext csd values of current | |
964 | * bus width and ext csd values of 1 bit mode read earlier. | |
965 | */ | |
577fb131 | 966 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
967 | /* |
968 | * Host is capable of 8bit transfer, then switch | |
969 | * the device to work in 8bit transfer mode. If the | |
970 | * mmc switch command returns error then switch to | |
971 | * 4bit transfer mode. On success set the corresponding | |
972 | * bus width on the host. | |
973 | */ | |
974 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
975 | EXT_CSD_BUS_WIDTH, | |
976 | ext_csd_bits[idx], | |
977 | card->ext_csd.generic_cmd6_time); | |
978 | if (err) | |
979 | continue; | |
980 | ||
577fb131 SJ |
981 | bus_width = bus_widths[idx]; |
982 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 983 | |
577fb131 SJ |
984 | /* |
985 | * If controller can't handle bus width test, | |
986 | * compare ext_csd previously read in 1 bit mode | |
987 | * against ext_csd at new bus width | |
988 | */ | |
a4924c71 | 989 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 990 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 991 | else |
577fb131 SJ |
992 | err = mmc_bus_test(card, bus_width); |
993 | ||
994 | if (!err) { | |
995 | err = bus_width; | |
a4924c71 | 996 | break; |
577fb131 SJ |
997 | } else { |
998 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 999 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 1000 | } |
a4924c71 G |
1001 | } |
1002 | ||
577fb131 SJ |
1003 | return err; |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * Switch to the high-speed mode | |
1008 | */ | |
1009 | static int mmc_select_hs(struct mmc_card *card) | |
1010 | { | |
1011 | int err; | |
1012 | ||
1013 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1014 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
aa33ce3c | 1015 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf CJ |
1016 | true, false, true); |
1017 | if (!err) { | |
577fb131 | 1018 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
08573eaf CJ |
1019 | err = mmc_switch_status(card); |
1020 | } | |
577fb131 | 1021 | |
67d35960 JL |
1022 | if (err) |
1023 | pr_warn("%s: switch to high-speed failed, err:%d\n", | |
1024 | mmc_hostname(card->host), err); | |
1025 | ||
577fb131 SJ |
1026 | return err; |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Activate wide bus and DDR if supported. | |
1031 | */ | |
1032 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1033 | { | |
1034 | struct mmc_host *host = card->host; | |
1035 | u32 bus_width, ext_csd_bits; | |
1036 | int err = 0; | |
1037 | ||
1038 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1039 | return 0; | |
1040 | ||
1041 | bus_width = host->ios.bus_width; | |
1042 | if (bus_width == MMC_BUS_WIDTH_1) | |
1043 | return 0; | |
1044 | ||
1045 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1046 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1047 | ||
1048 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1049 | EXT_CSD_BUS_WIDTH, | |
1050 | ext_csd_bits, | |
1051 | card->ext_csd.generic_cmd6_time); | |
1052 | if (err) { | |
4b75bffc | 1053 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1054 | mmc_hostname(host), 1 << bus_width); |
1055 | return err; | |
1056 | } | |
1057 | ||
1058 | /* | |
1059 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1060 | * signaling. | |
1061 | * | |
1062 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1063 | * | |
1064 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1065 | * in the JEDEC spec for DDR. | |
1066 | * | |
312449ef CD |
1067 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1068 | * host controller can support this, like some of the SDHCI | |
1069 | * controller which connect to an eMMC device. Some of these | |
1070 | * host controller still needs to use 1.8v vccq for supporting | |
1071 | * DDR mode. | |
1072 | * | |
1073 | * So the sequence will be: | |
1074 | * if (host and device can both support 1.2v IO) | |
1075 | * use 1.2v IO; | |
1076 | * else if (host and device can both support 1.8v IO) | |
1077 | * use 1.8v IO; | |
1078 | * so if host and device can only support 3.3v IO, this is the | |
1079 | * last choice. | |
577fb131 SJ |
1080 | * |
1081 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1082 | */ | |
312449ef CD |
1083 | err = -EINVAL; |
1084 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1085 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1086 | |
312449ef CD |
1087 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1088 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1089 | ||
1090 | /* make sure vccq is 3.3v after switching disaster */ | |
1091 | if (err) | |
1092 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1093 | ||
1094 | if (!err) | |
1095 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1096 | |
1097 | return err; | |
1098 | } | |
1099 | ||
0a5b6438 SJ |
1100 | static int mmc_select_hs400(struct mmc_card *card) |
1101 | { | |
1102 | struct mmc_host *host = card->host; | |
51b12f77 | 1103 | unsigned int max_dtr; |
0a5b6438 | 1104 | int err = 0; |
cc4f414c | 1105 | u8 val; |
0a5b6438 SJ |
1106 | |
1107 | /* | |
1108 | * HS400 mode requires 8-bit bus width | |
1109 | */ | |
1110 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1111 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1112 | return 0; | |
1113 | ||
51b12f77 | 1114 | /* Switch card to HS mode */ |
adb24d42 | 1115 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1116 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1117 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1118 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1119 | true, false, true); |
0a5b6438 | 1120 | if (err) { |
4b75bffc | 1121 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1122 | mmc_hostname(host), err); |
1123 | return err; | |
1124 | } | |
1125 | ||
51b12f77 AH |
1126 | /* Set host controller to HS timing */ |
1127 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1128 | ||
649c6059 ZX |
1129 | /* Reduce frequency to HS frequency */ |
1130 | max_dtr = card->ext_csd.hs_max_dtr; | |
1131 | mmc_set_clock(host, max_dtr); | |
1132 | ||
08573eaf CJ |
1133 | err = mmc_switch_status(card); |
1134 | if (err) | |
1135 | goto out_err; | |
d2302933 AH |
1136 | |
1137 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1138 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1139 | EXT_CSD_BUS_WIDTH, | |
1140 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1141 | card->ext_csd.generic_cmd6_time); | |
1142 | if (err) { | |
4b75bffc | 1143 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1144 | mmc_hostname(host), err); |
1145 | return err; | |
1146 | } | |
1147 | ||
d2302933 | 1148 | /* Switch card to HS400 */ |
cc4f414c AH |
1149 | val = EXT_CSD_TIMING_HS400 | |
1150 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1151 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1152 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1153 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1154 | true, false, true); |
0a5b6438 | 1155 | if (err) { |
4b75bffc | 1156 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1157 | mmc_hostname(host), err); |
1158 | return err; | |
1159 | } | |
1160 | ||
d2302933 | 1161 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1162 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1163 | mmc_set_bus_speed(card); | |
1164 | ||
08573eaf CJ |
1165 | err = mmc_switch_status(card); |
1166 | if (err) | |
1167 | goto out_err; | |
d2302933 | 1168 | |
0a5b6438 | 1169 | return 0; |
d2302933 AH |
1170 | |
1171 | out_err: | |
1172 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1173 | __func__, err); | |
1174 | return err; | |
0a5b6438 SJ |
1175 | } |
1176 | ||
6376f69d AH |
1177 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1178 | { | |
1179 | return mmc_select_hs400(card); | |
1180 | } | |
1181 | ||
6376f69d AH |
1182 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1183 | { | |
1184 | struct mmc_host *host = card->host; | |
6376f69d AH |
1185 | unsigned int max_dtr; |
1186 | int err; | |
cc4f414c | 1187 | u8 val; |
6376f69d | 1188 | |
6376f69d AH |
1189 | /* Reduce frequency to HS */ |
1190 | max_dtr = card->ext_csd.hs_max_dtr; | |
1191 | mmc_set_clock(host, max_dtr); | |
1192 | ||
1193 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1194 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1195 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1196 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1197 | true, false, true); |
6376f69d AH |
1198 | if (err) |
1199 | goto out_err; | |
1200 | ||
1201 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1202 | ||
08573eaf CJ |
1203 | err = mmc_switch_status(card); |
1204 | if (err) | |
1205 | goto out_err; | |
6376f69d AH |
1206 | |
1207 | /* Switch HS DDR to HS */ | |
1208 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1209 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
aa33ce3c | 1210 | 0, true, false, true); |
6376f69d AH |
1211 | if (err) |
1212 | goto out_err; | |
1213 | ||
1214 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1215 | ||
08573eaf CJ |
1216 | err = mmc_switch_status(card); |
1217 | if (err) | |
1218 | goto out_err; | |
6376f69d AH |
1219 | |
1220 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1221 | val = EXT_CSD_TIMING_HS200 | |
1222 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1223 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1224 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1225 | true, false, true); |
6376f69d AH |
1226 | if (err) |
1227 | goto out_err; | |
1228 | ||
1229 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1230 | ||
08573eaf CJ |
1231 | err = mmc_switch_status(card); |
1232 | if (err) | |
1233 | goto out_err; | |
6376f69d AH |
1234 | |
1235 | mmc_set_bus_speed(card); | |
1236 | ||
1237 | return 0; | |
1238 | ||
1239 | out_err: | |
1240 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1241 | __func__, err); | |
1242 | return err; | |
1243 | } | |
1244 | ||
81ac2af6 SL |
1245 | static int mmc_select_hs400es(struct mmc_card *card) |
1246 | { | |
1247 | struct mmc_host *host = card->host; | |
1248 | int err = 0; | |
1249 | u8 val; | |
1250 | ||
1251 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { | |
1252 | err = -ENOTSUPP; | |
1253 | goto out_err; | |
1254 | } | |
1255 | ||
1720d354 SL |
1256 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) |
1257 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1258 | ||
1259 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) | |
1260 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1261 | ||
1262 | /* If fails try again during next card power cycle */ | |
1263 | if (err) | |
1264 | goto out_err; | |
1265 | ||
81ac2af6 SL |
1266 | err = mmc_select_bus_width(card); |
1267 | if (err < 0) | |
1268 | goto out_err; | |
1269 | ||
1270 | /* Switch card to HS mode */ | |
1271 | err = mmc_select_hs(card); | |
67d35960 | 1272 | if (err) |
81ac2af6 | 1273 | goto out_err; |
81ac2af6 | 1274 | |
4f25580f SL |
1275 | mmc_set_clock(host, card->ext_csd.hs_max_dtr); |
1276 | ||
81ac2af6 SL |
1277 | err = mmc_switch_status(card); |
1278 | if (err) | |
1279 | goto out_err; | |
1280 | ||
1281 | /* Switch card to DDR with strobe bit */ | |
1282 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1283 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1284 | EXT_CSD_BUS_WIDTH, | |
1285 | val, | |
1286 | card->ext_csd.generic_cmd6_time); | |
1287 | if (err) { | |
1288 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1289 | mmc_hostname(host), err); | |
1290 | goto out_err; | |
1291 | } | |
1292 | ||
1293 | /* Switch card to HS400 */ | |
1294 | val = EXT_CSD_TIMING_HS400 | | |
1295 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1296 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1297 | EXT_CSD_HS_TIMING, val, | |
aa33ce3c | 1298 | card->ext_csd.generic_cmd6_time, 0, |
81ac2af6 SL |
1299 | true, false, true); |
1300 | if (err) { | |
1301 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1302 | mmc_hostname(host), err); | |
1303 | goto out_err; | |
1304 | } | |
1305 | ||
1306 | /* Set host controller to HS400 timing and frequency */ | |
1307 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1308 | ||
1309 | /* Controller enable enhanced strobe function */ | |
1310 | host->ios.enhanced_strobe = true; | |
1311 | if (host->ops->hs400_enhanced_strobe) | |
1312 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1313 | ||
1314 | err = mmc_switch_status(card); | |
1315 | if (err) | |
1316 | goto out_err; | |
1317 | ||
1318 | return 0; | |
1319 | ||
1320 | out_err: | |
1321 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1322 | __func__, err); | |
1323 | return err; | |
1324 | } | |
1325 | ||
cc4f414c AH |
1326 | static void mmc_select_driver_type(struct mmc_card *card) |
1327 | { | |
1328 | int card_drv_type, drive_strength, drv_type; | |
1329 | ||
1330 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1331 | mmc_driver_type_mask(0); | |
1332 | ||
1333 | drive_strength = mmc_select_drive_strength(card, | |
1334 | card->ext_csd.hs200_max_dtr, | |
1335 | card_drv_type, &drv_type); | |
1336 | ||
1337 | card->drive_strength = drive_strength; | |
1338 | ||
1339 | if (drv_type) | |
1340 | mmc_set_driver_type(card->host, drv_type); | |
1341 | } | |
1342 | ||
577fb131 SJ |
1343 | /* |
1344 | * For device supporting HS200 mode, the following sequence | |
1345 | * should be done before executing the tuning process. | |
1346 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1347 | * 2. switch to HS200 mode | |
1348 | * 3. set the clock to > 52Mhz and <=200MHz | |
1349 | */ | |
1350 | static int mmc_select_hs200(struct mmc_card *card) | |
1351 | { | |
1352 | struct mmc_host *host = card->host; | |
e51534c8 | 1353 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1354 | int err = -EINVAL; |
cc4f414c | 1355 | u8 val; |
577fb131 | 1356 | |
e51534c8 | 1357 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 SJ |
1358 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
1359 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1360 | ||
1361 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1362 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1363 | ||
1364 | /* If fails try again during next card power cycle */ | |
1365 | if (err) | |
e51534c8 | 1366 | return err; |
577fb131 | 1367 | |
cc4f414c AH |
1368 | mmc_select_driver_type(card); |
1369 | ||
577fb131 SJ |
1370 | /* |
1371 | * Set the bus width(4 or 8) with host's support and | |
1372 | * switch to HS200 mode if bus width is set successfully. | |
1373 | */ | |
1374 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1375 | if (err > 0) { |
cc4f414c AH |
1376 | val = EXT_CSD_TIMING_HS200 | |
1377 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1378 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1379 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1380 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1381 | true, false, true); |
1815e61b AH |
1382 | if (err) |
1383 | goto err; | |
1384 | old_timing = host->ios.timing; | |
1385 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
08573eaf CJ |
1386 | |
1387 | err = mmc_switch_status(card); | |
1388 | /* | |
1389 | * mmc_select_timing() assumes timing has not changed if | |
1390 | * it is a switch error. | |
1391 | */ | |
1392 | if (err == -EBADMSG) | |
1393 | mmc_set_timing(host, old_timing); | |
577fb131 | 1394 | } |
a4924c71 | 1395 | err: |
e51534c8 DA |
1396 | if (err) { |
1397 | /* fall back to the old signal voltage, if fails report error */ | |
1398 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) | |
1399 | err = -EIO; | |
1400 | ||
1815e61b AH |
1401 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1402 | __func__, err); | |
e51534c8 | 1403 | } |
a4924c71 G |
1404 | return err; |
1405 | } | |
1406 | ||
577fb131 | 1407 | /* |
81ac2af6 | 1408 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1409 | */ |
1410 | static int mmc_select_timing(struct mmc_card *card) | |
1411 | { | |
1412 | int err = 0; | |
1413 | ||
148bcab2 | 1414 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1415 | goto bus_speed; |
1416 | ||
81ac2af6 SL |
1417 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) |
1418 | err = mmc_select_hs400es(card); | |
1419 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
577fb131 SJ |
1420 | err = mmc_select_hs200(card); |
1421 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1422 | err = mmc_select_hs(card); | |
1423 | ||
1424 | if (err && err != -EBADMSG) | |
1425 | return err; | |
1426 | ||
577fb131 SJ |
1427 | bus_speed: |
1428 | /* | |
1429 | * Set the bus speed to the selected bus timing. | |
1430 | * If timing is not selected, backward compatible is the default. | |
1431 | */ | |
1432 | mmc_set_bus_speed(card); | |
0400ed0a | 1433 | return 0; |
577fb131 SJ |
1434 | } |
1435 | ||
1436 | /* | |
1437 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1438 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1439 | */ |
1440 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1441 | { | |
1442 | struct mmc_host *host = card->host; | |
577fb131 | 1443 | |
0a5b6438 SJ |
1444 | /* |
1445 | * Timing should be adjusted to the HS400 target | |
1446 | * operation frequency for tuning process | |
1447 | */ | |
1448 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1449 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1450 | if (host->ops->prepare_hs400_tuning) | |
1451 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1452 | ||
63e415c6 | 1453 | return mmc_execute_tuning(card); |
577fb131 SJ |
1454 | } |
1455 | ||
7ea239d9 | 1456 | /* |
6abaa0c9 PO |
1457 | * Handle the detection and initialisation of a card. |
1458 | * | |
8769392b | 1459 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1460 | * we're trying to reinitialise. |
7ea239d9 | 1461 | */ |
8c75deae | 1462 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1463 | struct mmc_card *oldcard) |
7ea239d9 PO |
1464 | { |
1465 | struct mmc_card *card; | |
577fb131 | 1466 | int err; |
7ea239d9 | 1467 | u32 cid[4]; |
b676f039 | 1468 | u32 rocr; |
7ea239d9 PO |
1469 | |
1470 | BUG_ON(!host); | |
d84075c8 | 1471 | WARN_ON(!host->claimed); |
7ea239d9 | 1472 | |
44669034 SNX |
1473 | /* Set correct bus mode for MMC before attempting init */ |
1474 | if (!mmc_host_is_spi(host)) | |
1475 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1476 | ||
7ea239d9 PO |
1477 | /* |
1478 | * Since we're changing the OCR value, we seem to | |
1479 | * need to tell some cards to go back to the idle | |
1480 | * state. We wait 1ms to give cards time to | |
1481 | * respond. | |
c3805467 | 1482 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1483 | */ |
1484 | mmc_go_idle(host); | |
1485 | ||
1486 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1487 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1488 | if (err) |
6abaa0c9 | 1489 | goto err; |
7ea239d9 | 1490 | |
af517150 DB |
1491 | /* |
1492 | * For SPI, enable CRC as appropriate. | |
1493 | */ | |
1494 | if (mmc_host_is_spi(host)) { | |
1495 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1496 | if (err) | |
1497 | goto err; | |
1498 | } | |
1499 | ||
7ea239d9 PO |
1500 | /* |
1501 | * Fetch CID from card. | |
1502 | */ | |
af517150 DB |
1503 | if (mmc_host_is_spi(host)) |
1504 | err = mmc_send_cid(host, cid); | |
1505 | else | |
1506 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1507 | if (err) |
7ea239d9 PO |
1508 | goto err; |
1509 | ||
6abaa0c9 | 1510 | if (oldcard) { |
adf66a0d PO |
1511 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1512 | err = -ENOENT; | |
6abaa0c9 | 1513 | goto err; |
adf66a0d | 1514 | } |
6abaa0c9 PO |
1515 | |
1516 | card = oldcard; | |
1517 | } else { | |
1518 | /* | |
1519 | * Allocate card structure. | |
1520 | */ | |
51ec92e2 | 1521 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1522 | if (IS_ERR(card)) { |
1523 | err = PTR_ERR(card); | |
6abaa0c9 | 1524 | goto err; |
adf66a0d | 1525 | } |
7ea239d9 | 1526 | |
69041150 | 1527 | card->ocr = ocr; |
6abaa0c9 PO |
1528 | card->type = MMC_TYPE_MMC; |
1529 | card->rca = 1; | |
1530 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1531 | } | |
7ea239d9 | 1532 | |
eac86321 DA |
1533 | /* |
1534 | * Call the optional HC's init_card function to handle quirks. | |
1535 | */ | |
1536 | if (host->ops->init_card) | |
1537 | host->ops->init_card(host, card); | |
1538 | ||
7ea239d9 | 1539 | /* |
af517150 | 1540 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1541 | */ |
af517150 DB |
1542 | if (!mmc_host_is_spi(host)) { |
1543 | err = mmc_set_relative_addr(card); | |
1544 | if (err) | |
1545 | goto free_card; | |
7ea239d9 | 1546 | |
af517150 DB |
1547 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1548 | } | |
7ea239d9 | 1549 | |
6abaa0c9 PO |
1550 | if (!oldcard) { |
1551 | /* | |
1552 | * Fetch CSD from card. | |
1553 | */ | |
1554 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1555 | if (err) |
6abaa0c9 | 1556 | goto free_card; |
7ea239d9 | 1557 | |
bd766312 | 1558 | err = mmc_decode_csd(card); |
adf66a0d | 1559 | if (err) |
bd766312 PO |
1560 | goto free_card; |
1561 | err = mmc_decode_cid(card); | |
adf66a0d | 1562 | if (err) |
bd766312 | 1563 | goto free_card; |
6abaa0c9 | 1564 | } |
7ea239d9 | 1565 | |
3d705d14 SH |
1566 | /* |
1567 | * handling only for cards supporting DSR and hosts requesting | |
1568 | * DSR configuration | |
1569 | */ | |
1570 | if (card->csd.dsr_imp && host->dsr_req) | |
1571 | mmc_set_dsr(host); | |
1572 | ||
7ea239d9 | 1573 | /* |
89a73cf5 | 1574 | * Select card, as all following commands rely on that. |
7ea239d9 | 1575 | */ |
af517150 DB |
1576 | if (!mmc_host_is_spi(host)) { |
1577 | err = mmc_select_card(card); | |
1578 | if (err) | |
1579 | goto free_card; | |
1580 | } | |
7ea239d9 | 1581 | |
6abaa0c9 | 1582 | if (!oldcard) { |
076ec38a UH |
1583 | /* Read extended CSD. */ |
1584 | err = mmc_read_ext_csd(card); | |
17b0429d | 1585 | if (err) |
6abaa0c9 | 1586 | goto free_card; |
b676f039 | 1587 | |
87e88659 MY |
1588 | /* |
1589 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1590 | * addressing. Handle the case of <2GB cards needing sector |
1591 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1592 | * ocr register has bit 30 set for sector addressing. | |
1593 | */ | |
87e88659 | 1594 | if (rocr & BIT(30)) |
b676f039 PR |
1595 | mmc_card_set_blockaddr(card); |
1596 | ||
dfe86cba AH |
1597 | /* Erase size depends on CSD and Extended CSD */ |
1598 | mmc_set_erase_size(card); | |
6abaa0c9 | 1599 | } |
7ea239d9 | 1600 | |
709de99d CD |
1601 | /* |
1602 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1603 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1604 | */ |
69803d4f | 1605 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1606 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1607 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1608 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1609 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1610 | |
1611 | if (err && err != -EBADMSG) | |
1612 | goto free_card; | |
1613 | ||
1614 | if (err) { | |
1615 | err = 0; | |
1616 | /* | |
1617 | * Just disable enhanced area off & sz | |
1618 | * will try to enable ERASE_GROUP_DEF | |
1619 | * during next time reinit | |
1620 | */ | |
1621 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1622 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1623 | } else { | |
1624 | card->ext_csd.erase_group_def = 1; | |
1625 | /* | |
1626 | * enable ERASE_GRP_DEF successfully. | |
1627 | * This will affect the erase size, so | |
1628 | * here need to reset erase size | |
1629 | */ | |
1630 | mmc_set_erase_size(card); | |
1631 | } | |
1632 | } | |
1633 | ||
41e2a489 PR |
1634 | /* |
1635 | * Ensure eMMC user default partition is enabled | |
1636 | */ | |
371a689f AW |
1637 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1638 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1639 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1640 | card->ext_csd.part_config, | |
1641 | card->ext_csd.part_time); | |
1642 | if (err && err != -EBADMSG) | |
1643 | goto free_card; | |
41e2a489 PR |
1644 | } |
1645 | ||
bec8726a | 1646 | /* |
43235679 | 1647 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1648 | */ |
43235679 | 1649 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1650 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1651 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1652 | EXT_CSD_POWER_ON, | |
1653 | card->ext_csd.generic_cmd6_time); | |
1654 | if (err && err != -EBADMSG) | |
1655 | goto free_card; | |
bec8726a | 1656 | |
96a85d54 G |
1657 | /* |
1658 | * The err can be -EBADMSG or 0, | |
1659 | * so check for success and update the flag | |
1660 | */ | |
1661 | if (!err) | |
e6c08586 | 1662 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1663 | } |
bec8726a | 1664 | |
89a73cf5 | 1665 | /* |
577fb131 | 1666 | * Select timing interface |
dfc13e84 | 1667 | */ |
577fb131 SJ |
1668 | err = mmc_select_timing(card); |
1669 | if (err) | |
1670 | goto free_card; | |
dfc13e84 | 1671 | |
a4924c71 | 1672 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1673 | err = mmc_hs200_tuning(card); |
1674 | if (err) | |
4b75bffc | 1675 | goto free_card; |
0a5b6438 SJ |
1676 | |
1677 | err = mmc_select_hs400(card); | |
1678 | if (err) | |
4b75bffc | 1679 | goto free_card; |
577fb131 SJ |
1680 | } else if (mmc_card_hs(card)) { |
1681 | /* Select the desired bus width optionally */ | |
1682 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1683 | if (err > 0) { |
577fb131 SJ |
1684 | err = mmc_select_hs_ddr(card); |
1685 | if (err) | |
4b75bffc | 1686 | goto free_card; |
ef0b27d4 | 1687 | } |
89a73cf5 PO |
1688 | } |
1689 | ||
2385049d SJ |
1690 | /* |
1691 | * Choose the power class with selected bus interface | |
1692 | */ | |
1693 | mmc_select_powerclass(card); | |
1694 | ||
52d0974e SJ |
1695 | /* |
1696 | * Enable HPI feature (if supported) | |
1697 | */ | |
1698 | if (card->ext_csd.hpi) { | |
1699 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1700 | EXT_CSD_HPI_MGMT, 1, | |
1701 | card->ext_csd.generic_cmd6_time); | |
1702 | if (err && err != -EBADMSG) | |
1703 | goto free_card; | |
1704 | if (err) { | |
6606110d JP |
1705 | pr_warn("%s: Enabling HPI failed\n", |
1706 | mmc_hostname(card->host)); | |
52d0974e SJ |
1707 | err = 0; |
1708 | } else | |
1709 | card->ext_csd.hpi_en = 1; | |
1710 | } | |
1711 | ||
881d1c25 SJ |
1712 | /* |
1713 | * If cache size is higher than 0, this indicates | |
1714 | * the existence of cache and it can be turned on. | |
1715 | */ | |
5320226a P |
1716 | if (!mmc_card_broken_hpi(card) && |
1717 | card->ext_csd.cache_size > 0) { | |
881d1c25 | 1718 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1719 | EXT_CSD_CACHE_CTRL, 1, |
1720 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1721 | if (err && err != -EBADMSG) |
1722 | goto free_card; | |
1723 | ||
1724 | /* | |
1725 | * Only if no error, cache is turned on successfully. | |
1726 | */ | |
8bc0678b | 1727 | if (err) { |
6606110d JP |
1728 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1729 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1730 | card->ext_csd.cache_ctrl = 0; |
1731 | err = 0; | |
1732 | } else { | |
1733 | card->ext_csd.cache_ctrl = 1; | |
1734 | } | |
881d1c25 SJ |
1735 | } |
1736 | ||
abd9ac14 SJ |
1737 | /* |
1738 | * The mandatory minimum values are defined for packed command. | |
1739 | * read: 5, write: 3 | |
1740 | */ | |
1741 | if (card->ext_csd.max_packed_writes >= 3 && | |
1742 | card->ext_csd.max_packed_reads >= 5 && | |
1743 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1744 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1745 | EXT_CSD_EXP_EVENTS_CTRL, | |
1746 | EXT_CSD_PACKED_EVENT_EN, | |
1747 | card->ext_csd.generic_cmd6_time); | |
1748 | if (err && err != -EBADMSG) | |
1749 | goto free_card; | |
1750 | if (err) { | |
1751 | pr_warn("%s: Enabling packed event failed\n", | |
1752 | mmc_hostname(card->host)); | |
1753 | card->ext_csd.packed_event_en = 0; | |
1754 | err = 0; | |
1755 | } else { | |
1756 | card->ext_csd.packed_event_en = 1; | |
1757 | } | |
1758 | } | |
1759 | ||
6abaa0c9 PO |
1760 | if (!oldcard) |
1761 | host->card = card; | |
1762 | ||
17b0429d | 1763 | return 0; |
6abaa0c9 PO |
1764 | |
1765 | free_card: | |
1766 | if (!oldcard) | |
1767 | mmc_remove_card(card); | |
1768 | err: | |
adf66a0d | 1769 | return err; |
6abaa0c9 PO |
1770 | } |
1771 | ||
07a68216 UH |
1772 | static int mmc_can_sleep(struct mmc_card *card) |
1773 | { | |
1774 | return (card && card->ext_csd.rev >= 3); | |
1775 | } | |
1776 | ||
1777 | static int mmc_sleep(struct mmc_host *host) | |
1778 | { | |
1779 | struct mmc_command cmd = {0}; | |
1780 | struct mmc_card *card = host->card; | |
cb962e04 | 1781 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1782 | int err; |
1783 | ||
436f8daa AH |
1784 | /* Re-tuning can't be done once the card is deselected */ |
1785 | mmc_retune_hold(host); | |
1786 | ||
07a68216 UH |
1787 | err = mmc_deselect_cards(host); |
1788 | if (err) | |
436f8daa | 1789 | goto out_release; |
07a68216 UH |
1790 | |
1791 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1792 | cmd.arg = card->rca << 16; | |
1793 | cmd.arg |= 1 << 15; | |
1794 | ||
cb962e04 UH |
1795 | /* |
1796 | * If the max_busy_timeout of the host is specified, validate it against | |
1797 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1798 | * from doing hw busy detection, which is done by converting to a R1 | |
1799 | * response instead of a R1B. | |
1800 | */ | |
1801 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1802 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1803 | } else { | |
1804 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1805 | cmd.busy_timeout = timeout_ms; | |
1806 | } | |
1807 | ||
07a68216 UH |
1808 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1809 | if (err) | |
436f8daa | 1810 | goto out_release; |
07a68216 UH |
1811 | |
1812 | /* | |
1813 | * If the host does not wait while the card signals busy, then we will | |
1814 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1815 | * SEND_STATUS command to poll the status because that command (and most | |
1816 | * others) is invalid while the card sleeps. | |
1817 | */ | |
cb962e04 UH |
1818 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1819 | mmc_delay(timeout_ms); | |
07a68216 | 1820 | |
436f8daa AH |
1821 | out_release: |
1822 | mmc_retune_release(host); | |
07a68216 UH |
1823 | return err; |
1824 | } | |
1825 | ||
e6c08586 UH |
1826 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1827 | { | |
1828 | return card && | |
1829 | mmc_card_mmc(card) && | |
1830 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1831 | } | |
1832 | ||
1833 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1834 | { | |
1835 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1836 | int err; | |
1837 | ||
1838 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1839 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1840 | timeout = card->ext_csd.power_off_longtime; | |
1841 | ||
878e200b UH |
1842 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1843 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
aa33ce3c | 1844 | notify_type, timeout, 0, true, false, false); |
e6c08586 UH |
1845 | if (err) |
1846 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1847 | mmc_hostname(card->host), timeout); | |
1848 | ||
1849 | /* Disable the power off notification after the switch operation. */ | |
1850 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1851 | ||
1852 | return err; | |
1853 | } | |
1854 | ||
6abaa0c9 PO |
1855 | /* |
1856 | * Host is being removed. Free up the current card. | |
1857 | */ | |
1858 | static void mmc_remove(struct mmc_host *host) | |
1859 | { | |
1860 | BUG_ON(!host); | |
1861 | BUG_ON(!host->card); | |
1862 | ||
1863 | mmc_remove_card(host->card); | |
1864 | host->card = NULL; | |
1865 | } | |
1866 | ||
d3049504 AH |
1867 | /* |
1868 | * Card detection - card is alive. | |
1869 | */ | |
1870 | static int mmc_alive(struct mmc_host *host) | |
1871 | { | |
1872 | return mmc_send_status(host->card, NULL); | |
1873 | } | |
1874 | ||
6abaa0c9 PO |
1875 | /* |
1876 | * Card detection callback from host. | |
1877 | */ | |
1878 | static void mmc_detect(struct mmc_host *host) | |
1879 | { | |
1880 | int err; | |
1881 | ||
1882 | BUG_ON(!host); | |
1883 | BUG_ON(!host->card); | |
1884 | ||
e94cfef6 | 1885 | mmc_get_card(host->card); |
6abaa0c9 PO |
1886 | |
1887 | /* | |
1888 | * Just check if our card has been removed. | |
1889 | */ | |
d3049504 | 1890 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1891 | |
e94cfef6 | 1892 | mmc_put_card(host->card); |
6abaa0c9 | 1893 | |
17b0429d | 1894 | if (err) { |
4101c16a | 1895 | mmc_remove(host); |
6abaa0c9 PO |
1896 | |
1897 | mmc_claim_host(host); | |
1898 | mmc_detach_bus(host); | |
7f7e4129 | 1899 | mmc_power_off(host); |
6abaa0c9 PO |
1900 | mmc_release_host(host); |
1901 | } | |
1902 | } | |
1903 | ||
03d071fc | 1904 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1905 | { |
c3805467 | 1906 | int err = 0; |
03d071fc UH |
1907 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1908 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1909 | |
6abaa0c9 PO |
1910 | BUG_ON(!host); |
1911 | BUG_ON(!host->card); | |
7ea239d9 | 1912 | |
6abaa0c9 | 1913 | mmc_claim_host(host); |
881d926d | 1914 | |
9ec775f7 UH |
1915 | if (mmc_card_suspended(host->card)) |
1916 | goto out; | |
1917 | ||
39b9431b UH |
1918 | if (mmc_card_doing_bkops(host->card)) { |
1919 | err = mmc_stop_bkops(host->card); | |
1920 | if (err) | |
1921 | goto out; | |
1922 | } | |
1923 | ||
10e5d965 | 1924 | err = mmc_flush_cache(host->card); |
881d926d ME |
1925 | if (err) |
1926 | goto out; | |
1927 | ||
43235679 | 1928 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1929 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1930 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1931 | else if (mmc_can_sleep(host->card)) |
1932 | err = mmc_sleep(host); | |
e6c08586 | 1933 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1934 | err = mmc_deselect_cards(host); |
95cdfb72 | 1935 | |
9ec775f7 | 1936 | if (!err) { |
74590263 | 1937 | mmc_power_off(host); |
9ec775f7 UH |
1938 | mmc_card_set_suspended(host->card); |
1939 | } | |
881d926d ME |
1940 | out: |
1941 | mmc_release_host(host); | |
c3805467 | 1942 | return err; |
6abaa0c9 | 1943 | } |
7ea239d9 | 1944 | |
03d071fc | 1945 | /* |
0cb403a2 | 1946 | * Suspend callback |
03d071fc UH |
1947 | */ |
1948 | static int mmc_suspend(struct mmc_host *host) | |
1949 | { | |
0cb403a2 UH |
1950 | int err; |
1951 | ||
1952 | err = _mmc_suspend(host, true); | |
1953 | if (!err) { | |
1954 | pm_runtime_disable(&host->card->dev); | |
1955 | pm_runtime_set_suspended(&host->card->dev); | |
1956 | } | |
1957 | ||
1958 | return err; | |
03d071fc UH |
1959 | } |
1960 | ||
6abaa0c9 | 1961 | /* |
6abaa0c9 PO |
1962 | * This function tries to determine if the same card is still present |
1963 | * and, if so, restore all state to it. | |
1964 | */ | |
0cb403a2 | 1965 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1966 | { |
9ec775f7 | 1967 | int err = 0; |
6abaa0c9 PO |
1968 | |
1969 | BUG_ON(!host); | |
1970 | BUG_ON(!host->card); | |
1971 | ||
1972 | mmc_claim_host(host); | |
9ec775f7 UH |
1973 | |
1974 | if (!mmc_card_suspended(host->card)) | |
1975 | goto out; | |
1976 | ||
69041150 | 1977 | mmc_power_up(host, host->card->ocr); |
69041150 | 1978 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1979 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1980 | |
9ec775f7 UH |
1981 | out: |
1982 | mmc_release_host(host); | |
95cdfb72 | 1983 | return err; |
6abaa0c9 PO |
1984 | } |
1985 | ||
9ec775f7 UH |
1986 | /* |
1987 | * Shutdown callback | |
1988 | */ | |
1989 | static int mmc_shutdown(struct mmc_host *host) | |
1990 | { | |
1991 | int err = 0; | |
1992 | ||
1993 | /* | |
1994 | * In a specific case for poweroff notify, we need to resume the card | |
1995 | * before we can shutdown it properly. | |
1996 | */ | |
1997 | if (mmc_can_poweroff_notify(host->card) && | |
1998 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1999 | err = _mmc_resume(host); |
9ec775f7 UH |
2000 | |
2001 | if (!err) | |
2002 | err = _mmc_suspend(host, false); | |
2003 | ||
2004 | return err; | |
2005 | } | |
c4d770d7 | 2006 | |
0cb403a2 UH |
2007 | /* |
2008 | * Callback for resume. | |
2009 | */ | |
2010 | static int mmc_resume(struct mmc_host *host) | |
2011 | { | |
0cb403a2 | 2012 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 2013 | return 0; |
0cb403a2 UH |
2014 | } |
2015 | ||
c4d770d7 UH |
2016 | /* |
2017 | * Callback for runtime_suspend. | |
2018 | */ | |
2019 | static int mmc_runtime_suspend(struct mmc_host *host) | |
2020 | { | |
2021 | int err; | |
2022 | ||
2023 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
2024 | return 0; | |
2025 | ||
0cb403a2 | 2026 | err = _mmc_suspend(host, true); |
0cc81a8c | 2027 | if (err) |
f42cf8d6 | 2028 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 2029 | mmc_hostname(host), err); |
c4d770d7 | 2030 | |
c4d770d7 UH |
2031 | return err; |
2032 | } | |
2033 | ||
2034 | /* | |
2035 | * Callback for runtime_resume. | |
2036 | */ | |
2037 | static int mmc_runtime_resume(struct mmc_host *host) | |
2038 | { | |
2039 | int err; | |
2040 | ||
0cb403a2 | 2041 | err = _mmc_resume(host); |
520322d9 | 2042 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2043 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2044 | mmc_hostname(host), err); |
2045 | ||
c4d770d7 UH |
2046 | return 0; |
2047 | } | |
2048 | ||
f855a371 JR |
2049 | int mmc_can_reset(struct mmc_card *card) |
2050 | { | |
2051 | u8 rst_n_function; | |
2052 | ||
2053 | rst_n_function = card->ext_csd.rst_n_function; | |
2054 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2055 | return 0; | |
2056 | return 1; | |
2057 | } | |
2058 | EXPORT_SYMBOL(mmc_can_reset); | |
2059 | ||
2060 | static int mmc_reset(struct mmc_host *host) | |
2061 | { | |
2062 | struct mmc_card *card = host->card; | |
f855a371 | 2063 | |
437db4c6 AH |
2064 | /* |
2065 | * In the case of recovery, we can't expect flushing the cache to work | |
2066 | * always, but we have a go and ignore errors. | |
2067 | */ | |
2068 | mmc_flush_cache(host->card); | |
2069 | ||
4e6c7178 GG |
2070 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
2071 | mmc_can_reset(card)) { | |
2072 | /* If the card accept RST_n signal, send it. */ | |
2073 | mmc_set_clock(host, host->f_init); | |
2074 | host->ops->hw_reset(host); | |
2075 | /* Set initial state and call mmc_set_ios */ | |
2076 | mmc_set_initial_state(host); | |
2077 | } else { | |
2078 | /* Do a brute force power cycle */ | |
2079 | mmc_power_cycle(host, card->ocr); | |
2080 | } | |
364549dd | 2081 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2082 | } |
2083 | ||
6abaa0c9 PO |
2084 | static const struct mmc_bus_ops mmc_ops = { |
2085 | .remove = mmc_remove, | |
2086 | .detect = mmc_detect, | |
2087 | .suspend = mmc_suspend, | |
2088 | .resume = mmc_resume, | |
c4d770d7 UH |
2089 | .runtime_suspend = mmc_runtime_suspend, |
2090 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2091 | .alive = mmc_alive, |
486fdbbc | 2092 | .shutdown = mmc_shutdown, |
f855a371 | 2093 | .reset = mmc_reset, |
6abaa0c9 PO |
2094 | }; |
2095 | ||
2096 | /* | |
2097 | * Starting point for MMC card init. | |
2098 | */ | |
807e8e40 | 2099 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2100 | { |
2101 | int err; | |
69041150 | 2102 | u32 ocr, rocr; |
6abaa0c9 PO |
2103 | |
2104 | BUG_ON(!host); | |
d84075c8 | 2105 | WARN_ON(!host->claimed); |
6abaa0c9 | 2106 | |
44669034 SNX |
2107 | /* Set correct bus mode for MMC before attempting attach */ |
2108 | if (!mmc_host_is_spi(host)) | |
2109 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2110 | ||
807e8e40 AR |
2111 | err = mmc_send_op_cond(host, 0, &ocr); |
2112 | if (err) | |
2113 | return err; | |
2114 | ||
2501c917 | 2115 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2116 | if (host->ocr_avail_mmc) |
2117 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2118 | |
af517150 DB |
2119 | /* |
2120 | * We need to get OCR a different way for SPI. | |
2121 | */ | |
2122 | if (mmc_host_is_spi(host)) { | |
2123 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2124 | if (err) | |
2125 | goto err; | |
2126 | } | |
2127 | ||
69041150 | 2128 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2129 | |
2130 | /* | |
2131 | * Can we support the voltage of the card? | |
2132 | */ | |
69041150 | 2133 | if (!rocr) { |
109b5bed | 2134 | err = -EINVAL; |
6abaa0c9 | 2135 | goto err; |
109b5bed | 2136 | } |
6abaa0c9 PO |
2137 | |
2138 | /* | |
2139 | * Detect and init the card. | |
2140 | */ | |
69041150 | 2141 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2142 | if (err) |
6abaa0c9 PO |
2143 | goto err; |
2144 | ||
2145 | mmc_release_host(host); | |
4101c16a | 2146 | err = mmc_add_card(host->card); |
7ea239d9 | 2147 | if (err) |
2986d0bf | 2148 | goto remove_card; |
7ea239d9 | 2149 | |
2860d060 | 2150 | mmc_claim_host(host); |
7ea239d9 PO |
2151 | return 0; |
2152 | ||
2986d0bf | 2153 | remove_card: |
6abaa0c9 | 2154 | mmc_remove_card(host->card); |
2986d0bf | 2155 | mmc_claim_host(host); |
807e8e40 | 2156 | host->card = NULL; |
7ea239d9 PO |
2157 | err: |
2158 | mmc_detach_bus(host); | |
7ea239d9 | 2159 | |
a3c76eb9 | 2160 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2161 | mmc_hostname(host), err); |
2162 | ||
adf66a0d | 2163 | return err; |
7ea239d9 | 2164 | } |