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[mirror_ubuntu-bionic-kernel.git] / drivers / mmc / host / sdhci-pci-core.c
1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
2 *
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 *
10 * Thanks to the following companies for their support:
11 *
12 * - JMicron (hardware and technical support)
13 */
14
15 #include <linux/delay.h>
16 #include <linux/highmem.h>
17 #include <linux/module.h>
18 #include <linux/pci.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/device.h>
22 #include <linux/mmc/host.h>
23 #include <linux/mmc/mmc.h>
24 #include <linux/scatterlist.h>
25 #include <linux/io.h>
26 #include <linux/gpio.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/mmc/slot-gpio.h>
29 #include <linux/mmc/sdhci-pci-data.h>
30 #include <linux/acpi.h>
31
32 #include "sdhci.h"
33 #include "sdhci-pci.h"
34 #include "sdhci-pci-o2micro.h"
35
36 static int sdhci_pci_enable_dma(struct sdhci_host *host);
37 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width);
38 static void sdhci_pci_hw_reset(struct sdhci_host *host);
39 static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
40 struct mmc_card *card,
41 unsigned int max_dtr, int host_drv,
42 int card_drv, int *drv_type);
43
44 /*****************************************************************************\
45 * *
46 * Hardware specific quirk handling *
47 * *
48 \*****************************************************************************/
49
50 static int ricoh_probe(struct sdhci_pci_chip *chip)
51 {
52 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
53 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
54 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
55 return 0;
56 }
57
58 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
59 {
60 slot->host->caps =
61 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
62 & SDHCI_TIMEOUT_CLK_MASK) |
63
64 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
65 & SDHCI_CLOCK_BASE_MASK) |
66
67 SDHCI_TIMEOUT_CLK_UNIT |
68 SDHCI_CAN_VDD_330 |
69 SDHCI_CAN_DO_HISPD |
70 SDHCI_CAN_DO_SDMA;
71 return 0;
72 }
73
74 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
75 {
76 /* Apply a delay to allow controller to settle */
77 /* Otherwise it becomes confused if card state changed
78 during suspend */
79 msleep(500);
80 return 0;
81 }
82
83 static const struct sdhci_pci_fixes sdhci_ricoh = {
84 .probe = ricoh_probe,
85 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
86 SDHCI_QUIRK_FORCE_DMA |
87 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
88 };
89
90 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
91 .probe_slot = ricoh_mmc_probe_slot,
92 .resume = ricoh_mmc_resume,
93 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
94 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
95 SDHCI_QUIRK_NO_CARD_NO_RESET |
96 SDHCI_QUIRK_MISSING_CAPS
97 };
98
99 static const struct sdhci_pci_fixes sdhci_ene_712 = {
100 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
101 SDHCI_QUIRK_BROKEN_DMA,
102 };
103
104 static const struct sdhci_pci_fixes sdhci_ene_714 = {
105 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
106 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
107 SDHCI_QUIRK_BROKEN_DMA,
108 };
109
110 static const struct sdhci_pci_fixes sdhci_cafe = {
111 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
112 SDHCI_QUIRK_NO_BUSY_IRQ |
113 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
114 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
115 };
116
117 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
118 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
119 };
120
121 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
122 {
123 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
124 return 0;
125 }
126
127 /*
128 * ADMA operation is disabled for Moorestown platform due to
129 * hardware bugs.
130 */
131 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
132 {
133 /*
134 * slots number is fixed here for MRST as SDIO3/5 are never used and
135 * have hardware bugs.
136 */
137 chip->num_slots = 1;
138 return 0;
139 }
140
141 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
142 {
143 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
144 return 0;
145 }
146
147 #ifdef CONFIG_PM
148
149 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
150 {
151 struct sdhci_pci_slot *slot = dev_id;
152 struct sdhci_host *host = slot->host;
153
154 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
155 return IRQ_HANDLED;
156 }
157
158 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
159 {
160 int err, irq, gpio = slot->cd_gpio;
161
162 slot->cd_gpio = -EINVAL;
163 slot->cd_irq = -EINVAL;
164
165 if (!gpio_is_valid(gpio))
166 return;
167
168 err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
169 if (err < 0)
170 goto out;
171
172 err = gpio_direction_input(gpio);
173 if (err < 0)
174 goto out_free;
175
176 irq = gpio_to_irq(gpio);
177 if (irq < 0)
178 goto out_free;
179
180 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
181 IRQF_TRIGGER_FALLING, "sd_cd", slot);
182 if (err)
183 goto out_free;
184
185 slot->cd_gpio = gpio;
186 slot->cd_irq = irq;
187
188 return;
189
190 out_free:
191 devm_gpio_free(&slot->chip->pdev->dev, gpio);
192 out:
193 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
194 }
195
196 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
197 {
198 if (slot->cd_irq >= 0)
199 free_irq(slot->cd_irq, slot);
200 }
201
202 #else
203
204 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
205 {
206 }
207
208 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
209 {
210 }
211
212 #endif
213
214 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
215 {
216 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
217 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
218 MMC_CAP2_HC_ERASE_SZ;
219 return 0;
220 }
221
222 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
223 {
224 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
225 return 0;
226 }
227
228 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
229 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
230 .probe_slot = mrst_hc_probe_slot,
231 };
232
233 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
234 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
235 .probe = mrst_hc_probe,
236 };
237
238 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
239 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
240 .allow_runtime_pm = true,
241 .own_cd_for_runtime_pm = true,
242 };
243
244 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
245 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
246 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
247 .allow_runtime_pm = true,
248 .probe_slot = mfd_sdio_probe_slot,
249 };
250
251 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
252 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
253 .allow_runtime_pm = true,
254 .probe_slot = mfd_emmc_probe_slot,
255 };
256
257 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
258 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
259 .probe_slot = pch_hc_probe_slot,
260 };
261
262 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
263 {
264 u8 reg;
265
266 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
267 reg |= 0x10;
268 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
269 /* For eMMC, minimum is 1us but give it 9us for good measure */
270 udelay(9);
271 reg &= ~0x10;
272 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
273 /* For eMMC, minimum is 200us but give it 300us for good measure */
274 usleep_range(300, 1000);
275 }
276
277 static int spt_select_drive_strength(struct sdhci_host *host,
278 struct mmc_card *card,
279 unsigned int max_dtr,
280 int host_drv, int card_drv, int *drv_type)
281 {
282 int drive_strength;
283
284 if (sdhci_pci_spt_drive_strength > 0)
285 drive_strength = sdhci_pci_spt_drive_strength & 0xf;
286 else
287 drive_strength = 0; /* Default 50-ohm */
288
289 if ((mmc_driver_type_mask(drive_strength) & card_drv) == 0)
290 drive_strength = 0; /* Default 50-ohm */
291
292 return drive_strength;
293 }
294
295 /* Try to read the drive strength from the card */
296 static void spt_read_drive_strength(struct sdhci_host *host)
297 {
298 u32 val, i, t;
299 u16 m;
300
301 if (sdhci_pci_spt_drive_strength)
302 return;
303
304 sdhci_pci_spt_drive_strength = -1;
305
306 m = sdhci_readw(host, SDHCI_HOST_CONTROL2) & 0x7;
307 if (m != 3 && m != 5)
308 return;
309 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
310 if (val & 0x3)
311 return;
312 sdhci_writel(host, 0x007f0023, SDHCI_INT_ENABLE);
313 sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
314 sdhci_writew(host, 0x10, SDHCI_TRANSFER_MODE);
315 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
316 sdhci_writew(host, 512, SDHCI_BLOCK_SIZE);
317 sdhci_writew(host, 1, SDHCI_BLOCK_COUNT);
318 sdhci_writel(host, 0, SDHCI_ARGUMENT);
319 sdhci_writew(host, 0x83b, SDHCI_COMMAND);
320 for (i = 0; i < 1000; i++) {
321 val = sdhci_readl(host, SDHCI_INT_STATUS);
322 if (val & 0xffff8000)
323 return;
324 if (val & 0x20)
325 break;
326 udelay(1);
327 }
328 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
329 if (!(val & 0x800))
330 return;
331 for (i = 0; i < 47; i++)
332 val = sdhci_readl(host, SDHCI_BUFFER);
333 t = val & 0xf00;
334 if (t != 0x200 && t != 0x300)
335 return;
336
337 sdhci_pci_spt_drive_strength = 0x10 | ((val >> 12) & 0xf);
338 }
339
340 static int bxt_get_cd(struct mmc_host *mmc)
341 {
342 int gpio_cd = mmc_gpio_get_cd(mmc);
343 struct sdhci_host *host = mmc_priv(mmc);
344 unsigned long flags;
345 int ret = 0;
346
347 if (!gpio_cd)
348 return 0;
349
350 spin_lock_irqsave(&host->lock, flags);
351
352 if (host->flags & SDHCI_DEVICE_DEAD)
353 goto out;
354
355 ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
356 out:
357 spin_unlock_irqrestore(&host->lock, flags);
358
359 return ret;
360 }
361
362 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
363 {
364 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
365 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
366 MMC_CAP_CMD_DURING_TFR |
367 MMC_CAP_WAIT_WHILE_BUSY;
368 slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
369 slot->hw_reset = sdhci_pci_int_hw_reset;
370 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
371 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
372 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_SPT_EMMC) {
373 spt_read_drive_strength(slot->host);
374 slot->select_drive_strength = spt_select_drive_strength;
375 }
376 return 0;
377 }
378
379 #ifdef CONFIG_ACPI
380 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
381 {
382 acpi_status status;
383 unsigned long long max_freq;
384
385 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
386 "MXFQ", NULL, &max_freq);
387 if (ACPI_FAILURE(status)) {
388 dev_err(&slot->chip->pdev->dev,
389 "MXFQ not found in acpi table\n");
390 return -EINVAL;
391 }
392
393 slot->host->mmc->f_max = max_freq * 1000000;
394
395 return 0;
396 }
397 #else
398 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
399 {
400 return 0;
401 }
402 #endif
403
404 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
405 {
406 int err;
407
408 err = ni_set_max_freq(slot);
409 if (err)
410 return err;
411
412 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
413 MMC_CAP_WAIT_WHILE_BUSY;
414 return 0;
415 }
416
417 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
418 {
419 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
420 MMC_CAP_WAIT_WHILE_BUSY;
421 return 0;
422 }
423
424 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
425 {
426 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
427 slot->cd_idx = 0;
428 slot->cd_override_level = true;
429 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
430 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
431 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
432 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) {
433 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
434 slot->host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
435 }
436
437 return 0;
438 }
439
440 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
441 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
442
443 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
444 unsigned short vdd)
445 {
446 int cntr;
447 u8 reg;
448
449 sdhci_set_power(host, mode, vdd);
450
451 if (mode == MMC_POWER_OFF)
452 return;
453
454 spin_unlock_irq(&host->lock);
455
456 /*
457 * Bus power might not enable after D3 -> D0 transition due to the
458 * present state not yet having propagated. Retry for up to 2ms.
459 */
460 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
461 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
462 if (reg & SDHCI_POWER_ON)
463 break;
464 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
465 reg |= SDHCI_POWER_ON;
466 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
467 }
468
469 spin_lock_irq(&host->lock);
470 }
471
472 static const struct sdhci_ops sdhci_intel_byt_ops = {
473 .set_clock = sdhci_set_clock,
474 .set_power = sdhci_intel_set_power,
475 .enable_dma = sdhci_pci_enable_dma,
476 .set_bus_width = sdhci_pci_set_bus_width,
477 .reset = sdhci_reset,
478 .set_uhs_signaling = sdhci_set_uhs_signaling,
479 .hw_reset = sdhci_pci_hw_reset,
480 .select_drive_strength = sdhci_pci_select_drive_strength,
481 };
482
483 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
484 .allow_runtime_pm = true,
485 .probe_slot = byt_emmc_probe_slot,
486 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
487 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
488 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
489 SDHCI_QUIRK2_STOP_WITH_TC,
490 .ops = &sdhci_intel_byt_ops,
491 };
492
493 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
494 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
495 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
496 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
497 .allow_runtime_pm = true,
498 .probe_slot = ni_byt_sdio_probe_slot,
499 .ops = &sdhci_intel_byt_ops,
500 };
501
502 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
503 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
504 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
505 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
506 .allow_runtime_pm = true,
507 .probe_slot = byt_sdio_probe_slot,
508 .ops = &sdhci_intel_byt_ops,
509 };
510
511 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
512 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
513 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
514 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
515 SDHCI_QUIRK2_STOP_WITH_TC,
516 .allow_runtime_pm = true,
517 .own_cd_for_runtime_pm = true,
518 .probe_slot = byt_sd_probe_slot,
519 .ops = &sdhci_intel_byt_ops,
520 };
521
522 /* Define Host controllers for Intel Merrifield platform */
523 #define INTEL_MRFLD_EMMC_0 0
524 #define INTEL_MRFLD_EMMC_1 1
525 #define INTEL_MRFLD_SD 2
526 #define INTEL_MRFLD_SDIO 3
527
528 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
529 {
530 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
531
532 switch (func) {
533 case INTEL_MRFLD_EMMC_0:
534 case INTEL_MRFLD_EMMC_1:
535 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
536 MMC_CAP_8_BIT_DATA |
537 MMC_CAP_1_8V_DDR;
538 break;
539 case INTEL_MRFLD_SD:
540 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
541 break;
542 case INTEL_MRFLD_SDIO:
543 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
544 MMC_CAP_POWER_OFF_CARD;
545 break;
546 default:
547 return -ENODEV;
548 }
549 return 0;
550 }
551
552 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
553 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
554 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
555 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
556 .allow_runtime_pm = true,
557 .probe_slot = intel_mrfld_mmc_probe_slot,
558 };
559
560 /* O2Micro extra registers */
561 #define O2_SD_LOCK_WP 0xD3
562 #define O2_SD_MULTI_VCC3V 0xEE
563 #define O2_SD_CLKREQ 0xEC
564 #define O2_SD_CAPS 0xE0
565 #define O2_SD_ADMA1 0xE2
566 #define O2_SD_ADMA2 0xE7
567 #define O2_SD_INF_MOD 0xF1
568
569 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
570 {
571 u8 scratch;
572 int ret;
573
574 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
575 if (ret)
576 return ret;
577
578 /*
579 * Turn PMOS on [bit 0], set over current detection to 2.4 V
580 * [bit 1:2] and enable over current debouncing [bit 6].
581 */
582 if (on)
583 scratch |= 0x47;
584 else
585 scratch &= ~0x47;
586
587 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
588 }
589
590 static int jmicron_probe(struct sdhci_pci_chip *chip)
591 {
592 int ret;
593 u16 mmcdev = 0;
594
595 if (chip->pdev->revision == 0) {
596 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
597 SDHCI_QUIRK_32BIT_DMA_SIZE |
598 SDHCI_QUIRK_32BIT_ADMA_SIZE |
599 SDHCI_QUIRK_RESET_AFTER_REQUEST |
600 SDHCI_QUIRK_BROKEN_SMALL_PIO;
601 }
602
603 /*
604 * JMicron chips can have two interfaces to the same hardware
605 * in order to work around limitations in Microsoft's driver.
606 * We need to make sure we only bind to one of them.
607 *
608 * This code assumes two things:
609 *
610 * 1. The PCI code adds subfunctions in order.
611 *
612 * 2. The MMC interface has a lower subfunction number
613 * than the SD interface.
614 */
615 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
616 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
617 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
618 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
619
620 if (mmcdev) {
621 struct pci_dev *sd_dev;
622
623 sd_dev = NULL;
624 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
625 mmcdev, sd_dev)) != NULL) {
626 if ((PCI_SLOT(chip->pdev->devfn) ==
627 PCI_SLOT(sd_dev->devfn)) &&
628 (chip->pdev->bus == sd_dev->bus))
629 break;
630 }
631
632 if (sd_dev) {
633 pci_dev_put(sd_dev);
634 dev_info(&chip->pdev->dev, "Refusing to bind to "
635 "secondary interface.\n");
636 return -ENODEV;
637 }
638 }
639
640 /*
641 * JMicron chips need a bit of a nudge to enable the power
642 * output pins.
643 */
644 ret = jmicron_pmos(chip, 1);
645 if (ret) {
646 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
647 return ret;
648 }
649
650 /* quirk for unsable RO-detection on JM388 chips */
651 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
652 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
653 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
654
655 return 0;
656 }
657
658 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
659 {
660 u8 scratch;
661
662 scratch = readb(host->ioaddr + 0xC0);
663
664 if (on)
665 scratch |= 0x01;
666 else
667 scratch &= ~0x01;
668
669 writeb(scratch, host->ioaddr + 0xC0);
670 }
671
672 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
673 {
674 if (slot->chip->pdev->revision == 0) {
675 u16 version;
676
677 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
678 version = (version & SDHCI_VENDOR_VER_MASK) >>
679 SDHCI_VENDOR_VER_SHIFT;
680
681 /*
682 * Older versions of the chip have lots of nasty glitches
683 * in the ADMA engine. It's best just to avoid it
684 * completely.
685 */
686 if (version < 0xAC)
687 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
688 }
689
690 /* JM388 MMC doesn't support 1.8V while SD supports it */
691 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
692 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
693 MMC_VDD_29_30 | MMC_VDD_30_31 |
694 MMC_VDD_165_195; /* allow 1.8V */
695 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
696 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
697 }
698
699 /*
700 * The secondary interface requires a bit set to get the
701 * interrupts.
702 */
703 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
704 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
705 jmicron_enable_mmc(slot->host, 1);
706
707 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
708
709 return 0;
710 }
711
712 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
713 {
714 if (dead)
715 return;
716
717 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
718 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
719 jmicron_enable_mmc(slot->host, 0);
720 }
721
722 static int jmicron_suspend(struct sdhci_pci_chip *chip)
723 {
724 int i;
725
726 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
727 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
728 for (i = 0; i < chip->num_slots; i++)
729 jmicron_enable_mmc(chip->slots[i]->host, 0);
730 }
731
732 return 0;
733 }
734
735 static int jmicron_resume(struct sdhci_pci_chip *chip)
736 {
737 int ret, i;
738
739 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
740 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
741 for (i = 0; i < chip->num_slots; i++)
742 jmicron_enable_mmc(chip->slots[i]->host, 1);
743 }
744
745 ret = jmicron_pmos(chip, 1);
746 if (ret) {
747 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
748 return ret;
749 }
750
751 return 0;
752 }
753
754 static const struct sdhci_pci_fixes sdhci_o2 = {
755 .probe = sdhci_pci_o2_probe,
756 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
757 .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
758 .probe_slot = sdhci_pci_o2_probe_slot,
759 .resume = sdhci_pci_o2_resume,
760 };
761
762 static const struct sdhci_pci_fixes sdhci_jmicron = {
763 .probe = jmicron_probe,
764
765 .probe_slot = jmicron_probe_slot,
766 .remove_slot = jmicron_remove_slot,
767
768 .suspend = jmicron_suspend,
769 .resume = jmicron_resume,
770 };
771
772 /* SysKonnect CardBus2SDIO extra registers */
773 #define SYSKT_CTRL 0x200
774 #define SYSKT_RDFIFO_STAT 0x204
775 #define SYSKT_WRFIFO_STAT 0x208
776 #define SYSKT_POWER_DATA 0x20c
777 #define SYSKT_POWER_330 0xef
778 #define SYSKT_POWER_300 0xf8
779 #define SYSKT_POWER_184 0xcc
780 #define SYSKT_POWER_CMD 0x20d
781 #define SYSKT_POWER_START (1 << 7)
782 #define SYSKT_POWER_STATUS 0x20e
783 #define SYSKT_POWER_STATUS_OK (1 << 0)
784 #define SYSKT_BOARD_REV 0x210
785 #define SYSKT_CHIP_REV 0x211
786 #define SYSKT_CONF_DATA 0x212
787 #define SYSKT_CONF_DATA_1V8 (1 << 2)
788 #define SYSKT_CONF_DATA_2V5 (1 << 1)
789 #define SYSKT_CONF_DATA_3V3 (1 << 0)
790
791 static int syskt_probe(struct sdhci_pci_chip *chip)
792 {
793 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
794 chip->pdev->class &= ~0x0000FF;
795 chip->pdev->class |= PCI_SDHCI_IFDMA;
796 }
797 return 0;
798 }
799
800 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
801 {
802 int tm, ps;
803
804 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
805 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
806 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
807 "board rev %d.%d, chip rev %d.%d\n",
808 board_rev >> 4, board_rev & 0xf,
809 chip_rev >> 4, chip_rev & 0xf);
810 if (chip_rev >= 0x20)
811 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
812
813 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
814 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
815 udelay(50);
816 tm = 10; /* Wait max 1 ms */
817 do {
818 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
819 if (ps & SYSKT_POWER_STATUS_OK)
820 break;
821 udelay(100);
822 } while (--tm);
823 if (!tm) {
824 dev_err(&slot->chip->pdev->dev,
825 "power regulator never stabilized");
826 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
827 return -ENODEV;
828 }
829
830 return 0;
831 }
832
833 static const struct sdhci_pci_fixes sdhci_syskt = {
834 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
835 .probe = syskt_probe,
836 .probe_slot = syskt_probe_slot,
837 };
838
839 static int via_probe(struct sdhci_pci_chip *chip)
840 {
841 if (chip->pdev->revision == 0x10)
842 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
843
844 return 0;
845 }
846
847 static const struct sdhci_pci_fixes sdhci_via = {
848 .probe = via_probe,
849 };
850
851 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
852 {
853 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
854 return 0;
855 }
856
857 static const struct sdhci_pci_fixes sdhci_rtsx = {
858 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
859 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
860 SDHCI_QUIRK2_BROKEN_DDR50,
861 .probe_slot = rtsx_probe_slot,
862 };
863
864 /*AMD chipset generation*/
865 enum amd_chipset_gen {
866 AMD_CHIPSET_BEFORE_ML,
867 AMD_CHIPSET_CZ,
868 AMD_CHIPSET_NL,
869 AMD_CHIPSET_UNKNOWN,
870 };
871
872 /* AMD registers */
873 #define AMD_SD_AUTO_PATTERN 0xB8
874 #define AMD_MSLEEP_DURATION 4
875 #define AMD_SD_MISC_CONTROL 0xD0
876 #define AMD_MAX_TUNE_VALUE 0x0B
877 #define AMD_AUTO_TUNE_SEL 0x10800
878 #define AMD_FIFO_PTR 0x30
879 #define AMD_BIT_MASK 0x1F
880
881 static void amd_tuning_reset(struct sdhci_host *host)
882 {
883 unsigned int val;
884
885 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
886 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
887 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
888
889 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
890 val &= ~SDHCI_CTRL_EXEC_TUNING;
891 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
892 }
893
894 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
895 {
896 unsigned int val;
897
898 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
899 val &= ~AMD_BIT_MASK;
900 val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
901 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
902 }
903
904 static void amd_enable_manual_tuning(struct pci_dev *pdev)
905 {
906 unsigned int val;
907
908 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
909 val |= AMD_FIFO_PTR;
910 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
911 }
912
913 static int amd_execute_tuning(struct sdhci_host *host, u32 opcode)
914 {
915 struct sdhci_pci_slot *slot = sdhci_priv(host);
916 struct pci_dev *pdev = slot->chip->pdev;
917 u8 valid_win = 0;
918 u8 valid_win_max = 0;
919 u8 valid_win_end = 0;
920 u8 ctrl, tune_around;
921
922 amd_tuning_reset(host);
923
924 for (tune_around = 0; tune_around < 12; tune_around++) {
925 amd_config_tuning_phase(pdev, tune_around);
926
927 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
928 valid_win = 0;
929 msleep(AMD_MSLEEP_DURATION);
930 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
931 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
932 } else if (++valid_win > valid_win_max) {
933 valid_win_max = valid_win;
934 valid_win_end = tune_around;
935 }
936 }
937
938 if (!valid_win_max) {
939 dev_err(&pdev->dev, "no tuning point found\n");
940 return -EIO;
941 }
942
943 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
944
945 amd_enable_manual_tuning(pdev);
946
947 host->mmc->retune_period = 0;
948
949 return 0;
950 }
951
952 static int amd_probe(struct sdhci_pci_chip *chip)
953 {
954 struct pci_dev *smbus_dev;
955 enum amd_chipset_gen gen;
956
957 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
958 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
959 if (smbus_dev) {
960 gen = AMD_CHIPSET_BEFORE_ML;
961 } else {
962 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
963 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
964 if (smbus_dev) {
965 if (smbus_dev->revision < 0x51)
966 gen = AMD_CHIPSET_CZ;
967 else
968 gen = AMD_CHIPSET_NL;
969 } else {
970 gen = AMD_CHIPSET_UNKNOWN;
971 }
972 }
973
974 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
975 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
976
977 return 0;
978 }
979
980 static const struct sdhci_ops amd_sdhci_pci_ops = {
981 .set_clock = sdhci_set_clock,
982 .enable_dma = sdhci_pci_enable_dma,
983 .set_bus_width = sdhci_pci_set_bus_width,
984 .reset = sdhci_reset,
985 .set_uhs_signaling = sdhci_set_uhs_signaling,
986 .platform_execute_tuning = amd_execute_tuning,
987 };
988
989 static const struct sdhci_pci_fixes sdhci_amd = {
990 .probe = amd_probe,
991 .ops = &amd_sdhci_pci_ops,
992 };
993
994 static const struct pci_device_id pci_ids[] = {
995 {
996 .vendor = PCI_VENDOR_ID_RICOH,
997 .device = PCI_DEVICE_ID_RICOH_R5C822,
998 .subvendor = PCI_ANY_ID,
999 .subdevice = PCI_ANY_ID,
1000 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
1001 },
1002
1003 {
1004 .vendor = PCI_VENDOR_ID_RICOH,
1005 .device = 0x843,
1006 .subvendor = PCI_ANY_ID,
1007 .subdevice = PCI_ANY_ID,
1008 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
1009 },
1010
1011 {
1012 .vendor = PCI_VENDOR_ID_RICOH,
1013 .device = 0xe822,
1014 .subvendor = PCI_ANY_ID,
1015 .subdevice = PCI_ANY_ID,
1016 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
1017 },
1018
1019 {
1020 .vendor = PCI_VENDOR_ID_RICOH,
1021 .device = 0xe823,
1022 .subvendor = PCI_ANY_ID,
1023 .subdevice = PCI_ANY_ID,
1024 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
1025 },
1026
1027 {
1028 .vendor = PCI_VENDOR_ID_ENE,
1029 .device = PCI_DEVICE_ID_ENE_CB712_SD,
1030 .subvendor = PCI_ANY_ID,
1031 .subdevice = PCI_ANY_ID,
1032 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
1033 },
1034
1035 {
1036 .vendor = PCI_VENDOR_ID_ENE,
1037 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
1038 .subvendor = PCI_ANY_ID,
1039 .subdevice = PCI_ANY_ID,
1040 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
1041 },
1042
1043 {
1044 .vendor = PCI_VENDOR_ID_ENE,
1045 .device = PCI_DEVICE_ID_ENE_CB714_SD,
1046 .subvendor = PCI_ANY_ID,
1047 .subdevice = PCI_ANY_ID,
1048 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
1049 },
1050
1051 {
1052 .vendor = PCI_VENDOR_ID_ENE,
1053 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
1054 .subvendor = PCI_ANY_ID,
1055 .subdevice = PCI_ANY_ID,
1056 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
1057 },
1058
1059 {
1060 .vendor = PCI_VENDOR_ID_MARVELL,
1061 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
1062 .subvendor = PCI_ANY_ID,
1063 .subdevice = PCI_ANY_ID,
1064 .driver_data = (kernel_ulong_t)&sdhci_cafe,
1065 },
1066
1067 {
1068 .vendor = PCI_VENDOR_ID_JMICRON,
1069 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
1070 .subvendor = PCI_ANY_ID,
1071 .subdevice = PCI_ANY_ID,
1072 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
1073 },
1074
1075 {
1076 .vendor = PCI_VENDOR_ID_JMICRON,
1077 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
1078 .subvendor = PCI_ANY_ID,
1079 .subdevice = PCI_ANY_ID,
1080 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
1081 },
1082
1083 {
1084 .vendor = PCI_VENDOR_ID_JMICRON,
1085 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
1086 .subvendor = PCI_ANY_ID,
1087 .subdevice = PCI_ANY_ID,
1088 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
1089 },
1090
1091 {
1092 .vendor = PCI_VENDOR_ID_JMICRON,
1093 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
1094 .subvendor = PCI_ANY_ID,
1095 .subdevice = PCI_ANY_ID,
1096 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
1097 },
1098
1099 {
1100 .vendor = PCI_VENDOR_ID_SYSKONNECT,
1101 .device = 0x8000,
1102 .subvendor = PCI_ANY_ID,
1103 .subdevice = PCI_ANY_ID,
1104 .driver_data = (kernel_ulong_t)&sdhci_syskt,
1105 },
1106
1107 {
1108 .vendor = PCI_VENDOR_ID_VIA,
1109 .device = 0x95d0,
1110 .subvendor = PCI_ANY_ID,
1111 .subdevice = PCI_ANY_ID,
1112 .driver_data = (kernel_ulong_t)&sdhci_via,
1113 },
1114
1115 {
1116 .vendor = PCI_VENDOR_ID_REALTEK,
1117 .device = 0x5250,
1118 .subvendor = PCI_ANY_ID,
1119 .subdevice = PCI_ANY_ID,
1120 .driver_data = (kernel_ulong_t)&sdhci_rtsx,
1121 },
1122
1123 {
1124 .vendor = PCI_VENDOR_ID_INTEL,
1125 .device = PCI_DEVICE_ID_INTEL_QRK_SD,
1126 .subvendor = PCI_ANY_ID,
1127 .subdevice = PCI_ANY_ID,
1128 .driver_data = (kernel_ulong_t)&sdhci_intel_qrk,
1129 },
1130
1131 {
1132 .vendor = PCI_VENDOR_ID_INTEL,
1133 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
1134 .subvendor = PCI_ANY_ID,
1135 .subdevice = PCI_ANY_ID,
1136 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
1137 },
1138
1139 {
1140 .vendor = PCI_VENDOR_ID_INTEL,
1141 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
1142 .subvendor = PCI_ANY_ID,
1143 .subdevice = PCI_ANY_ID,
1144 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
1145 },
1146
1147 {
1148 .vendor = PCI_VENDOR_ID_INTEL,
1149 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
1150 .subvendor = PCI_ANY_ID,
1151 .subdevice = PCI_ANY_ID,
1152 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
1153 },
1154
1155 {
1156 .vendor = PCI_VENDOR_ID_INTEL,
1157 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
1158 .subvendor = PCI_ANY_ID,
1159 .subdevice = PCI_ANY_ID,
1160 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
1161 },
1162
1163 {
1164 .vendor = PCI_VENDOR_ID_INTEL,
1165 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
1166 .subvendor = PCI_ANY_ID,
1167 .subdevice = PCI_ANY_ID,
1168 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1169 },
1170
1171 {
1172 .vendor = PCI_VENDOR_ID_INTEL,
1173 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
1174 .subvendor = PCI_ANY_ID,
1175 .subdevice = PCI_ANY_ID,
1176 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1177 },
1178
1179 {
1180 .vendor = PCI_VENDOR_ID_INTEL,
1181 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
1182 .subvendor = PCI_ANY_ID,
1183 .subdevice = PCI_ANY_ID,
1184 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1185 },
1186
1187 {
1188 .vendor = PCI_VENDOR_ID_INTEL,
1189 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
1190 .subvendor = PCI_ANY_ID,
1191 .subdevice = PCI_ANY_ID,
1192 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1193 },
1194
1195 {
1196 .vendor = PCI_VENDOR_ID_INTEL,
1197 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
1198 .subvendor = PCI_ANY_ID,
1199 .subdevice = PCI_ANY_ID,
1200 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1201 },
1202
1203 {
1204 .vendor = PCI_VENDOR_ID_INTEL,
1205 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
1206 .subvendor = PCI_ANY_ID,
1207 .subdevice = PCI_ANY_ID,
1208 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1209 },
1210
1211 {
1212 .vendor = PCI_VENDOR_ID_INTEL,
1213 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
1214 .subvendor = PCI_ANY_ID,
1215 .subdevice = PCI_ANY_ID,
1216 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1217 },
1218
1219 {
1220 .vendor = PCI_VENDOR_ID_INTEL,
1221 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
1222 .subvendor = PCI_VENDOR_ID_NI,
1223 .subdevice = 0x7884,
1224 .driver_data = (kernel_ulong_t)&sdhci_ni_byt_sdio,
1225 },
1226
1227 {
1228 .vendor = PCI_VENDOR_ID_INTEL,
1229 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
1230 .subvendor = PCI_ANY_ID,
1231 .subdevice = PCI_ANY_ID,
1232 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1233 },
1234
1235 {
1236 .vendor = PCI_VENDOR_ID_INTEL,
1237 .device = PCI_DEVICE_ID_INTEL_BYT_SD,
1238 .subvendor = PCI_ANY_ID,
1239 .subdevice = PCI_ANY_ID,
1240 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1241 },
1242
1243 {
1244 .vendor = PCI_VENDOR_ID_INTEL,
1245 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
1246 .subvendor = PCI_ANY_ID,
1247 .subdevice = PCI_ANY_ID,
1248 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1249 },
1250
1251 {
1252 .vendor = PCI_VENDOR_ID_INTEL,
1253 .device = PCI_DEVICE_ID_INTEL_BSW_EMMC,
1254 .subvendor = PCI_ANY_ID,
1255 .subdevice = PCI_ANY_ID,
1256 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1257 },
1258
1259 {
1260 .vendor = PCI_VENDOR_ID_INTEL,
1261 .device = PCI_DEVICE_ID_INTEL_BSW_SDIO,
1262 .subvendor = PCI_ANY_ID,
1263 .subdevice = PCI_ANY_ID,
1264 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1265 },
1266
1267 {
1268 .vendor = PCI_VENDOR_ID_INTEL,
1269 .device = PCI_DEVICE_ID_INTEL_BSW_SD,
1270 .subvendor = PCI_ANY_ID,
1271 .subdevice = PCI_ANY_ID,
1272 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1273 },
1274
1275 {
1276 .vendor = PCI_VENDOR_ID_INTEL,
1277 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
1278 .subvendor = PCI_ANY_ID,
1279 .subdevice = PCI_ANY_ID,
1280 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
1281 },
1282
1283 {
1284 .vendor = PCI_VENDOR_ID_INTEL,
1285 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO1,
1286 .subvendor = PCI_ANY_ID,
1287 .subdevice = PCI_ANY_ID,
1288 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1289 },
1290
1291 {
1292 .vendor = PCI_VENDOR_ID_INTEL,
1293 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO2,
1294 .subvendor = PCI_ANY_ID,
1295 .subdevice = PCI_ANY_ID,
1296 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1297 },
1298
1299 {
1300 .vendor = PCI_VENDOR_ID_INTEL,
1301 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC0,
1302 .subvendor = PCI_ANY_ID,
1303 .subdevice = PCI_ANY_ID,
1304 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1305 },
1306
1307 {
1308 .vendor = PCI_VENDOR_ID_INTEL,
1309 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC1,
1310 .subvendor = PCI_ANY_ID,
1311 .subdevice = PCI_ANY_ID,
1312 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1313 },
1314
1315 {
1316 .vendor = PCI_VENDOR_ID_INTEL,
1317 .device = PCI_DEVICE_ID_INTEL_MRFLD_MMC,
1318 .subvendor = PCI_ANY_ID,
1319 .subdevice = PCI_ANY_ID,
1320 .driver_data = (kernel_ulong_t)&sdhci_intel_mrfld_mmc,
1321 },
1322
1323 {
1324 .vendor = PCI_VENDOR_ID_INTEL,
1325 .device = PCI_DEVICE_ID_INTEL_SPT_EMMC,
1326 .subvendor = PCI_ANY_ID,
1327 .subdevice = PCI_ANY_ID,
1328 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1329 },
1330
1331 {
1332 .vendor = PCI_VENDOR_ID_INTEL,
1333 .device = PCI_DEVICE_ID_INTEL_SPT_SDIO,
1334 .subvendor = PCI_ANY_ID,
1335 .subdevice = PCI_ANY_ID,
1336 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1337 },
1338
1339 {
1340 .vendor = PCI_VENDOR_ID_INTEL,
1341 .device = PCI_DEVICE_ID_INTEL_SPT_SD,
1342 .subvendor = PCI_ANY_ID,
1343 .subdevice = PCI_ANY_ID,
1344 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1345 },
1346
1347 {
1348 .vendor = PCI_VENDOR_ID_INTEL,
1349 .device = PCI_DEVICE_ID_INTEL_DNV_EMMC,
1350 .subvendor = PCI_ANY_ID,
1351 .subdevice = PCI_ANY_ID,
1352 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1353 },
1354
1355 {
1356 .vendor = PCI_VENDOR_ID_INTEL,
1357 .device = PCI_DEVICE_ID_INTEL_BXT_EMMC,
1358 .subvendor = PCI_ANY_ID,
1359 .subdevice = PCI_ANY_ID,
1360 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1361 },
1362
1363 {
1364 .vendor = PCI_VENDOR_ID_INTEL,
1365 .device = PCI_DEVICE_ID_INTEL_BXT_SDIO,
1366 .subvendor = PCI_ANY_ID,
1367 .subdevice = PCI_ANY_ID,
1368 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1369 },
1370
1371 {
1372 .vendor = PCI_VENDOR_ID_INTEL,
1373 .device = PCI_DEVICE_ID_INTEL_BXT_SD,
1374 .subvendor = PCI_ANY_ID,
1375 .subdevice = PCI_ANY_ID,
1376 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1377 },
1378
1379 {
1380 .vendor = PCI_VENDOR_ID_INTEL,
1381 .device = PCI_DEVICE_ID_INTEL_BXTM_EMMC,
1382 .subvendor = PCI_ANY_ID,
1383 .subdevice = PCI_ANY_ID,
1384 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1385 },
1386
1387 {
1388 .vendor = PCI_VENDOR_ID_INTEL,
1389 .device = PCI_DEVICE_ID_INTEL_BXTM_SDIO,
1390 .subvendor = PCI_ANY_ID,
1391 .subdevice = PCI_ANY_ID,
1392 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1393 },
1394
1395 {
1396 .vendor = PCI_VENDOR_ID_INTEL,
1397 .device = PCI_DEVICE_ID_INTEL_BXTM_SD,
1398 .subvendor = PCI_ANY_ID,
1399 .subdevice = PCI_ANY_ID,
1400 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1401 },
1402
1403 {
1404 .vendor = PCI_VENDOR_ID_INTEL,
1405 .device = PCI_DEVICE_ID_INTEL_APL_EMMC,
1406 .subvendor = PCI_ANY_ID,
1407 .subdevice = PCI_ANY_ID,
1408 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1409 },
1410
1411 {
1412 .vendor = PCI_VENDOR_ID_INTEL,
1413 .device = PCI_DEVICE_ID_INTEL_APL_SDIO,
1414 .subvendor = PCI_ANY_ID,
1415 .subdevice = PCI_ANY_ID,
1416 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1417 },
1418
1419 {
1420 .vendor = PCI_VENDOR_ID_INTEL,
1421 .device = PCI_DEVICE_ID_INTEL_APL_SD,
1422 .subvendor = PCI_ANY_ID,
1423 .subdevice = PCI_ANY_ID,
1424 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1425 },
1426
1427 {
1428 .vendor = PCI_VENDOR_ID_INTEL,
1429 .device = PCI_DEVICE_ID_INTEL_GLK_EMMC,
1430 .subvendor = PCI_ANY_ID,
1431 .subdevice = PCI_ANY_ID,
1432 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1433 },
1434
1435 {
1436 .vendor = PCI_VENDOR_ID_INTEL,
1437 .device = PCI_DEVICE_ID_INTEL_GLK_SDIO,
1438 .subvendor = PCI_ANY_ID,
1439 .subdevice = PCI_ANY_ID,
1440 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1441 },
1442
1443 {
1444 .vendor = PCI_VENDOR_ID_INTEL,
1445 .device = PCI_DEVICE_ID_INTEL_GLK_SD,
1446 .subvendor = PCI_ANY_ID,
1447 .subdevice = PCI_ANY_ID,
1448 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1449 },
1450
1451 {
1452 .vendor = PCI_VENDOR_ID_O2,
1453 .device = PCI_DEVICE_ID_O2_8120,
1454 .subvendor = PCI_ANY_ID,
1455 .subdevice = PCI_ANY_ID,
1456 .driver_data = (kernel_ulong_t)&sdhci_o2,
1457 },
1458
1459 {
1460 .vendor = PCI_VENDOR_ID_O2,
1461 .device = PCI_DEVICE_ID_O2_8220,
1462 .subvendor = PCI_ANY_ID,
1463 .subdevice = PCI_ANY_ID,
1464 .driver_data = (kernel_ulong_t)&sdhci_o2,
1465 },
1466
1467 {
1468 .vendor = PCI_VENDOR_ID_O2,
1469 .device = PCI_DEVICE_ID_O2_8221,
1470 .subvendor = PCI_ANY_ID,
1471 .subdevice = PCI_ANY_ID,
1472 .driver_data = (kernel_ulong_t)&sdhci_o2,
1473 },
1474
1475 {
1476 .vendor = PCI_VENDOR_ID_O2,
1477 .device = PCI_DEVICE_ID_O2_8320,
1478 .subvendor = PCI_ANY_ID,
1479 .subdevice = PCI_ANY_ID,
1480 .driver_data = (kernel_ulong_t)&sdhci_o2,
1481 },
1482
1483 {
1484 .vendor = PCI_VENDOR_ID_O2,
1485 .device = PCI_DEVICE_ID_O2_8321,
1486 .subvendor = PCI_ANY_ID,
1487 .subdevice = PCI_ANY_ID,
1488 .driver_data = (kernel_ulong_t)&sdhci_o2,
1489 },
1490
1491 {
1492 .vendor = PCI_VENDOR_ID_O2,
1493 .device = PCI_DEVICE_ID_O2_FUJIN2,
1494 .subvendor = PCI_ANY_ID,
1495 .subdevice = PCI_ANY_ID,
1496 .driver_data = (kernel_ulong_t)&sdhci_o2,
1497 },
1498
1499 {
1500 .vendor = PCI_VENDOR_ID_O2,
1501 .device = PCI_DEVICE_ID_O2_SDS0,
1502 .subvendor = PCI_ANY_ID,
1503 .subdevice = PCI_ANY_ID,
1504 .driver_data = (kernel_ulong_t)&sdhci_o2,
1505 },
1506
1507 {
1508 .vendor = PCI_VENDOR_ID_O2,
1509 .device = PCI_DEVICE_ID_O2_SDS1,
1510 .subvendor = PCI_ANY_ID,
1511 .subdevice = PCI_ANY_ID,
1512 .driver_data = (kernel_ulong_t)&sdhci_o2,
1513 },
1514
1515 {
1516 .vendor = PCI_VENDOR_ID_O2,
1517 .device = PCI_DEVICE_ID_O2_SEABIRD0,
1518 .subvendor = PCI_ANY_ID,
1519 .subdevice = PCI_ANY_ID,
1520 .driver_data = (kernel_ulong_t)&sdhci_o2,
1521 },
1522
1523 {
1524 .vendor = PCI_VENDOR_ID_O2,
1525 .device = PCI_DEVICE_ID_O2_SEABIRD1,
1526 .subvendor = PCI_ANY_ID,
1527 .subdevice = PCI_ANY_ID,
1528 .driver_data = (kernel_ulong_t)&sdhci_o2,
1529 },
1530 {
1531 .vendor = PCI_VENDOR_ID_AMD,
1532 .device = PCI_ANY_ID,
1533 .class = PCI_CLASS_SYSTEM_SDHCI << 8,
1534 .class_mask = 0xFFFF00,
1535 .subvendor = PCI_ANY_ID,
1536 .subdevice = PCI_ANY_ID,
1537 .driver_data = (kernel_ulong_t)&sdhci_amd,
1538 },
1539 { /* Generic SD host controller */
1540 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
1541 },
1542
1543 { /* end: all zeroes */ },
1544 };
1545
1546 MODULE_DEVICE_TABLE(pci, pci_ids);
1547
1548 /*****************************************************************************\
1549 * *
1550 * SDHCI core callbacks *
1551 * *
1552 \*****************************************************************************/
1553
1554 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1555 {
1556 struct sdhci_pci_slot *slot;
1557 struct pci_dev *pdev;
1558
1559 slot = sdhci_priv(host);
1560 pdev = slot->chip->pdev;
1561
1562 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1563 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1564 (host->flags & SDHCI_USE_SDMA)) {
1565 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1566 "doesn't fully claim to support it.\n");
1567 }
1568
1569 pci_set_master(pdev);
1570
1571 return 0;
1572 }
1573
1574 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width)
1575 {
1576 u8 ctrl;
1577
1578 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
1579
1580 switch (width) {
1581 case MMC_BUS_WIDTH_8:
1582 ctrl |= SDHCI_CTRL_8BITBUS;
1583 ctrl &= ~SDHCI_CTRL_4BITBUS;
1584 break;
1585 case MMC_BUS_WIDTH_4:
1586 ctrl |= SDHCI_CTRL_4BITBUS;
1587 ctrl &= ~SDHCI_CTRL_8BITBUS;
1588 break;
1589 default:
1590 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
1591 break;
1592 }
1593
1594 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
1595 }
1596
1597 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1598 {
1599 struct sdhci_pci_slot *slot = sdhci_priv(host);
1600 int rst_n_gpio = slot->rst_n_gpio;
1601
1602 if (!gpio_is_valid(rst_n_gpio))
1603 return;
1604 gpio_set_value_cansleep(rst_n_gpio, 0);
1605 /* For eMMC, minimum is 1us but give it 10us for good measure */
1606 udelay(10);
1607 gpio_set_value_cansleep(rst_n_gpio, 1);
1608 /* For eMMC, minimum is 200us but give it 300us for good measure */
1609 usleep_range(300, 1000);
1610 }
1611
1612 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1613 {
1614 struct sdhci_pci_slot *slot = sdhci_priv(host);
1615
1616 if (slot->hw_reset)
1617 slot->hw_reset(host);
1618 }
1619
1620 static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
1621 struct mmc_card *card,
1622 unsigned int max_dtr, int host_drv,
1623 int card_drv, int *drv_type)
1624 {
1625 struct sdhci_pci_slot *slot = sdhci_priv(host);
1626
1627 if (!slot->select_drive_strength)
1628 return 0;
1629
1630 return slot->select_drive_strength(host, card, max_dtr, host_drv,
1631 card_drv, drv_type);
1632 }
1633
1634 static const struct sdhci_ops sdhci_pci_ops = {
1635 .set_clock = sdhci_set_clock,
1636 .enable_dma = sdhci_pci_enable_dma,
1637 .set_bus_width = sdhci_pci_set_bus_width,
1638 .reset = sdhci_reset,
1639 .set_uhs_signaling = sdhci_set_uhs_signaling,
1640 .hw_reset = sdhci_pci_hw_reset,
1641 .select_drive_strength = sdhci_pci_select_drive_strength,
1642 };
1643
1644 /*****************************************************************************\
1645 * *
1646 * Suspend/resume *
1647 * *
1648 \*****************************************************************************/
1649
1650 #ifdef CONFIG_PM_SLEEP
1651 static int sdhci_pci_suspend(struct device *dev)
1652 {
1653 struct pci_dev *pdev = to_pci_dev(dev);
1654 struct sdhci_pci_chip *chip;
1655 struct sdhci_pci_slot *slot;
1656 mmc_pm_flag_t slot_pm_flags;
1657 mmc_pm_flag_t pm_flags = 0;
1658 int i, ret;
1659
1660 chip = pci_get_drvdata(pdev);
1661 if (!chip)
1662 return 0;
1663
1664 for (i = 0; i < chip->num_slots; i++) {
1665 slot = chip->slots[i];
1666 if (!slot)
1667 continue;
1668
1669 ret = sdhci_suspend_host(slot->host);
1670
1671 if (ret)
1672 goto err_pci_suspend;
1673
1674 slot_pm_flags = slot->host->mmc->pm_flags;
1675 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1676 sdhci_enable_irq_wakeups(slot->host);
1677
1678 pm_flags |= slot_pm_flags;
1679 }
1680
1681 if (chip->fixes && chip->fixes->suspend) {
1682 ret = chip->fixes->suspend(chip);
1683 if (ret)
1684 goto err_pci_suspend;
1685 }
1686
1687 if (pm_flags & MMC_PM_KEEP_POWER) {
1688 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1689 device_init_wakeup(dev, true);
1690 else
1691 device_init_wakeup(dev, false);
1692 } else
1693 device_init_wakeup(dev, false);
1694
1695 return 0;
1696
1697 err_pci_suspend:
1698 while (--i >= 0)
1699 sdhci_resume_host(chip->slots[i]->host);
1700 return ret;
1701 }
1702
1703 static int sdhci_pci_resume(struct device *dev)
1704 {
1705 struct pci_dev *pdev = to_pci_dev(dev);
1706 struct sdhci_pci_chip *chip;
1707 struct sdhci_pci_slot *slot;
1708 int i, ret;
1709
1710 chip = pci_get_drvdata(pdev);
1711 if (!chip)
1712 return 0;
1713
1714 if (chip->fixes && chip->fixes->resume) {
1715 ret = chip->fixes->resume(chip);
1716 if (ret)
1717 return ret;
1718 }
1719
1720 for (i = 0; i < chip->num_slots; i++) {
1721 slot = chip->slots[i];
1722 if (!slot)
1723 continue;
1724
1725 ret = sdhci_resume_host(slot->host);
1726 if (ret)
1727 return ret;
1728 }
1729
1730 return 0;
1731 }
1732 #endif
1733
1734 #ifdef CONFIG_PM
1735 static int sdhci_pci_runtime_suspend(struct device *dev)
1736 {
1737 struct pci_dev *pdev = to_pci_dev(dev);
1738 struct sdhci_pci_chip *chip;
1739 struct sdhci_pci_slot *slot;
1740 int i, ret;
1741
1742 chip = pci_get_drvdata(pdev);
1743 if (!chip)
1744 return 0;
1745
1746 for (i = 0; i < chip->num_slots; i++) {
1747 slot = chip->slots[i];
1748 if (!slot)
1749 continue;
1750
1751 ret = sdhci_runtime_suspend_host(slot->host);
1752
1753 if (ret)
1754 goto err_pci_runtime_suspend;
1755 }
1756
1757 if (chip->fixes && chip->fixes->suspend) {
1758 ret = chip->fixes->suspend(chip);
1759 if (ret)
1760 goto err_pci_runtime_suspend;
1761 }
1762
1763 return 0;
1764
1765 err_pci_runtime_suspend:
1766 while (--i >= 0)
1767 sdhci_runtime_resume_host(chip->slots[i]->host);
1768 return ret;
1769 }
1770
1771 static int sdhci_pci_runtime_resume(struct device *dev)
1772 {
1773 struct pci_dev *pdev = to_pci_dev(dev);
1774 struct sdhci_pci_chip *chip;
1775 struct sdhci_pci_slot *slot;
1776 int i, ret;
1777
1778 chip = pci_get_drvdata(pdev);
1779 if (!chip)
1780 return 0;
1781
1782 if (chip->fixes && chip->fixes->resume) {
1783 ret = chip->fixes->resume(chip);
1784 if (ret)
1785 return ret;
1786 }
1787
1788 for (i = 0; i < chip->num_slots; i++) {
1789 slot = chip->slots[i];
1790 if (!slot)
1791 continue;
1792
1793 ret = sdhci_runtime_resume_host(slot->host);
1794 if (ret)
1795 return ret;
1796 }
1797
1798 return 0;
1799 }
1800 #endif
1801
1802 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1803 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1804 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1805 sdhci_pci_runtime_resume, NULL)
1806 };
1807
1808 /*****************************************************************************\
1809 * *
1810 * Device probing/removal *
1811 * *
1812 \*****************************************************************************/
1813
1814 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1815 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1816 int slotno)
1817 {
1818 struct sdhci_pci_slot *slot;
1819 struct sdhci_host *host;
1820 int ret, bar = first_bar + slotno;
1821
1822 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1823 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1824 return ERR_PTR(-ENODEV);
1825 }
1826
1827 if (pci_resource_len(pdev, bar) < 0x100) {
1828 dev_err(&pdev->dev, "Invalid iomem size. You may "
1829 "experience problems.\n");
1830 }
1831
1832 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1833 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1834 return ERR_PTR(-ENODEV);
1835 }
1836
1837 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1838 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1839 return ERR_PTR(-ENODEV);
1840 }
1841
1842 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1843 if (IS_ERR(host)) {
1844 dev_err(&pdev->dev, "cannot allocate host\n");
1845 return ERR_CAST(host);
1846 }
1847
1848 slot = sdhci_priv(host);
1849
1850 slot->chip = chip;
1851 slot->host = host;
1852 slot->rst_n_gpio = -EINVAL;
1853 slot->cd_gpio = -EINVAL;
1854 slot->cd_idx = -1;
1855
1856 /* Retrieve platform data if there is any */
1857 if (*sdhci_pci_get_data)
1858 slot->data = sdhci_pci_get_data(pdev, slotno);
1859
1860 if (slot->data) {
1861 if (slot->data->setup) {
1862 ret = slot->data->setup(slot->data);
1863 if (ret) {
1864 dev_err(&pdev->dev, "platform setup failed\n");
1865 goto free;
1866 }
1867 }
1868 slot->rst_n_gpio = slot->data->rst_n_gpio;
1869 slot->cd_gpio = slot->data->cd_gpio;
1870 }
1871
1872 host->hw_name = "PCI";
1873 host->ops = chip->fixes && chip->fixes->ops ?
1874 chip->fixes->ops :
1875 &sdhci_pci_ops;
1876 host->quirks = chip->quirks;
1877 host->quirks2 = chip->quirks2;
1878
1879 host->irq = pdev->irq;
1880
1881 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1882 if (ret) {
1883 dev_err(&pdev->dev, "cannot request region\n");
1884 goto cleanup;
1885 }
1886
1887 host->ioaddr = pcim_iomap_table(pdev)[bar];
1888
1889 if (chip->fixes && chip->fixes->probe_slot) {
1890 ret = chip->fixes->probe_slot(slot);
1891 if (ret)
1892 goto cleanup;
1893 }
1894
1895 if (gpio_is_valid(slot->rst_n_gpio)) {
1896 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1897 gpio_direction_output(slot->rst_n_gpio, 1);
1898 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1899 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1900 } else {
1901 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1902 slot->rst_n_gpio = -EINVAL;
1903 }
1904 }
1905
1906 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1907 host->mmc->slotno = slotno;
1908 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1909
1910 if (slot->cd_idx >= 0) {
1911 ret = mmc_gpiod_request_cd(host->mmc, NULL, slot->cd_idx,
1912 slot->cd_override_level, 0, NULL);
1913 if (ret == -EPROBE_DEFER)
1914 goto remove;
1915
1916 if (ret) {
1917 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1918 slot->cd_idx = -1;
1919 }
1920 }
1921
1922 ret = sdhci_add_host(host);
1923 if (ret)
1924 goto remove;
1925
1926 sdhci_pci_add_own_cd(slot);
1927
1928 /*
1929 * Check if the chip needs a separate GPIO for card detect to wake up
1930 * from runtime suspend. If it is not there, don't allow runtime PM.
1931 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1932 */
1933 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1934 !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1935 chip->allow_runtime_pm = false;
1936
1937 return slot;
1938
1939 remove:
1940 if (chip->fixes && chip->fixes->remove_slot)
1941 chip->fixes->remove_slot(slot, 0);
1942
1943 cleanup:
1944 if (slot->data && slot->data->cleanup)
1945 slot->data->cleanup(slot->data);
1946
1947 free:
1948 sdhci_free_host(host);
1949
1950 return ERR_PTR(ret);
1951 }
1952
1953 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1954 {
1955 int dead;
1956 u32 scratch;
1957
1958 sdhci_pci_remove_own_cd(slot);
1959
1960 dead = 0;
1961 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1962 if (scratch == (u32)-1)
1963 dead = 1;
1964
1965 sdhci_remove_host(slot->host, dead);
1966
1967 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1968 slot->chip->fixes->remove_slot(slot, dead);
1969
1970 if (slot->data && slot->data->cleanup)
1971 slot->data->cleanup(slot->data);
1972
1973 sdhci_free_host(slot->host);
1974 }
1975
1976 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1977 {
1978 pm_suspend_ignore_children(dev, 1);
1979 pm_runtime_set_autosuspend_delay(dev, 50);
1980 pm_runtime_use_autosuspend(dev);
1981 pm_runtime_allow(dev);
1982 /* Stay active until mmc core scans for a card */
1983 pm_runtime_put_noidle(dev);
1984 }
1985
1986 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1987 {
1988 pm_runtime_forbid(dev);
1989 pm_runtime_get_noresume(dev);
1990 }
1991
1992 static int sdhci_pci_probe(struct pci_dev *pdev,
1993 const struct pci_device_id *ent)
1994 {
1995 struct sdhci_pci_chip *chip;
1996 struct sdhci_pci_slot *slot;
1997
1998 u8 slots, first_bar;
1999 int ret, i;
2000
2001 BUG_ON(pdev == NULL);
2002 BUG_ON(ent == NULL);
2003
2004 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
2005 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
2006
2007 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
2008 if (ret)
2009 return ret;
2010
2011 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
2012 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
2013 if (slots == 0)
2014 return -ENODEV;
2015
2016 BUG_ON(slots > MAX_SLOTS);
2017
2018 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
2019 if (ret)
2020 return ret;
2021
2022 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
2023
2024 if (first_bar > 5) {
2025 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
2026 return -ENODEV;
2027 }
2028
2029 ret = pcim_enable_device(pdev);
2030 if (ret)
2031 return ret;
2032
2033 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
2034 if (!chip)
2035 return -ENOMEM;
2036
2037 chip->pdev = pdev;
2038 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
2039 if (chip->fixes) {
2040 chip->quirks = chip->fixes->quirks;
2041 chip->quirks2 = chip->fixes->quirks2;
2042 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
2043 }
2044 chip->num_slots = slots;
2045
2046 pci_set_drvdata(pdev, chip);
2047
2048 if (chip->fixes && chip->fixes->probe) {
2049 ret = chip->fixes->probe(chip);
2050 if (ret)
2051 return ret;
2052 }
2053
2054 slots = chip->num_slots; /* Quirk may have changed this */
2055
2056 for (i = 0; i < slots; i++) {
2057 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
2058 if (IS_ERR(slot)) {
2059 for (i--; i >= 0; i--)
2060 sdhci_pci_remove_slot(chip->slots[i]);
2061 return PTR_ERR(slot);
2062 }
2063
2064 chip->slots[i] = slot;
2065 }
2066
2067 if (chip->allow_runtime_pm)
2068 sdhci_pci_runtime_pm_allow(&pdev->dev);
2069
2070 return 0;
2071 }
2072
2073 static void sdhci_pci_remove(struct pci_dev *pdev)
2074 {
2075 int i;
2076 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2077
2078 if (chip->allow_runtime_pm)
2079 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2080
2081 for (i = 0; i < chip->num_slots; i++)
2082 sdhci_pci_remove_slot(chip->slots[i]);
2083 }
2084
2085 static struct pci_driver sdhci_driver = {
2086 .name = "sdhci-pci",
2087 .id_table = pci_ids,
2088 .probe = sdhci_pci_probe,
2089 .remove = sdhci_pci_remove,
2090 .driver = {
2091 .pm = &sdhci_pci_pm_ops
2092 },
2093 };
2094
2095 module_pci_driver(sdhci_driver);
2096
2097 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
2098 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2099 MODULE_LICENSE("GPL");
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