]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/mmc/host/sdhci-pci-core.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[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/string.h>
16 #include <linux/delay.h>
17 #include <linux/highmem.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
20 #include <linux/dma-mapping.h>
21 #include <linux/slab.h>
22 #include <linux/device.h>
23 #include <linux/mmc/host.h>
24 #include <linux/mmc/mmc.h>
25 #include <linux/scatterlist.h>
26 #include <linux/io.h>
27 #include <linux/gpio.h>
28 #include <linux/pm_runtime.h>
29 #include <linux/mmc/slot-gpio.h>
30 #include <linux/mmc/sdhci-pci-data.h>
31 #include <linux/acpi.h>
32
33 #include "sdhci.h"
34 #include "sdhci-pci.h"
35
36 static int sdhci_pci_enable_dma(struct sdhci_host *host);
37 static void sdhci_pci_hw_reset(struct sdhci_host *host);
38
39 #ifdef CONFIG_PM_SLEEP
40 static int __sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
41 {
42 int i, ret;
43
44 for (i = 0; i < chip->num_slots; i++) {
45 struct sdhci_pci_slot *slot = chip->slots[i];
46 struct sdhci_host *host;
47
48 if (!slot)
49 continue;
50
51 host = slot->host;
52
53 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
54 mmc_retune_needed(host->mmc);
55
56 ret = sdhci_suspend_host(host);
57 if (ret)
58 goto err_pci_suspend;
59
60 if (host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ)
61 sdhci_enable_irq_wakeups(host);
62 }
63
64 return 0;
65
66 err_pci_suspend:
67 while (--i >= 0)
68 sdhci_resume_host(chip->slots[i]->host);
69 return ret;
70 }
71
72 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
73 {
74 mmc_pm_flag_t pm_flags = 0;
75 int i;
76
77 for (i = 0; i < chip->num_slots; i++) {
78 struct sdhci_pci_slot *slot = chip->slots[i];
79
80 if (slot)
81 pm_flags |= slot->host->mmc->pm_flags;
82 }
83
84 return device_init_wakeup(&chip->pdev->dev,
85 (pm_flags & MMC_PM_KEEP_POWER) &&
86 (pm_flags & MMC_PM_WAKE_SDIO_IRQ));
87 }
88
89 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
90 {
91 int ret;
92
93 ret = __sdhci_pci_suspend_host(chip);
94 if (ret)
95 return ret;
96
97 sdhci_pci_init_wakeup(chip);
98
99 return 0;
100 }
101
102 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
103 {
104 struct sdhci_pci_slot *slot;
105 int i, ret;
106
107 for (i = 0; i < chip->num_slots; i++) {
108 slot = chip->slots[i];
109 if (!slot)
110 continue;
111
112 ret = sdhci_resume_host(slot->host);
113 if (ret)
114 return ret;
115 }
116
117 return 0;
118 }
119 #endif
120
121 #ifdef CONFIG_PM
122 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
123 {
124 struct sdhci_pci_slot *slot;
125 struct sdhci_host *host;
126 int i, ret;
127
128 for (i = 0; i < chip->num_slots; i++) {
129 slot = chip->slots[i];
130 if (!slot)
131 continue;
132
133 host = slot->host;
134
135 ret = sdhci_runtime_suspend_host(host);
136 if (ret)
137 goto err_pci_runtime_suspend;
138
139 if (chip->rpm_retune &&
140 host->tuning_mode != SDHCI_TUNING_MODE_3)
141 mmc_retune_needed(host->mmc);
142 }
143
144 return 0;
145
146 err_pci_runtime_suspend:
147 while (--i >= 0)
148 sdhci_runtime_resume_host(chip->slots[i]->host);
149 return ret;
150 }
151
152 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
153 {
154 struct sdhci_pci_slot *slot;
155 int i, ret;
156
157 for (i = 0; i < chip->num_slots; i++) {
158 slot = chip->slots[i];
159 if (!slot)
160 continue;
161
162 ret = sdhci_runtime_resume_host(slot->host);
163 if (ret)
164 return ret;
165 }
166
167 return 0;
168 }
169 #endif
170
171 /*****************************************************************************\
172 * *
173 * Hardware specific quirk handling *
174 * *
175 \*****************************************************************************/
176
177 static int ricoh_probe(struct sdhci_pci_chip *chip)
178 {
179 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
180 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
181 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
182 return 0;
183 }
184
185 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
186 {
187 slot->host->caps =
188 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
189 & SDHCI_TIMEOUT_CLK_MASK) |
190
191 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
192 & SDHCI_CLOCK_BASE_MASK) |
193
194 SDHCI_TIMEOUT_CLK_UNIT |
195 SDHCI_CAN_VDD_330 |
196 SDHCI_CAN_DO_HISPD |
197 SDHCI_CAN_DO_SDMA;
198 return 0;
199 }
200
201 #ifdef CONFIG_PM_SLEEP
202 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
203 {
204 /* Apply a delay to allow controller to settle */
205 /* Otherwise it becomes confused if card state changed
206 during suspend */
207 msleep(500);
208 return sdhci_pci_resume_host(chip);
209 }
210 #endif
211
212 static const struct sdhci_pci_fixes sdhci_ricoh = {
213 .probe = ricoh_probe,
214 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
215 SDHCI_QUIRK_FORCE_DMA |
216 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
217 };
218
219 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
220 .probe_slot = ricoh_mmc_probe_slot,
221 #ifdef CONFIG_PM_SLEEP
222 .resume = ricoh_mmc_resume,
223 #endif
224 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
225 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
226 SDHCI_QUIRK_NO_CARD_NO_RESET |
227 SDHCI_QUIRK_MISSING_CAPS
228 };
229
230 static const struct sdhci_pci_fixes sdhci_ene_712 = {
231 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
232 SDHCI_QUIRK_BROKEN_DMA,
233 };
234
235 static const struct sdhci_pci_fixes sdhci_ene_714 = {
236 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
237 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
238 SDHCI_QUIRK_BROKEN_DMA,
239 };
240
241 static const struct sdhci_pci_fixes sdhci_cafe = {
242 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
243 SDHCI_QUIRK_NO_BUSY_IRQ |
244 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
245 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
246 };
247
248 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
249 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
250 };
251
252 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
253 {
254 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
255 return 0;
256 }
257
258 /*
259 * ADMA operation is disabled for Moorestown platform due to
260 * hardware bugs.
261 */
262 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
263 {
264 /*
265 * slots number is fixed here for MRST as SDIO3/5 are never used and
266 * have hardware bugs.
267 */
268 chip->num_slots = 1;
269 return 0;
270 }
271
272 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
273 {
274 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
275 return 0;
276 }
277
278 #ifdef CONFIG_PM
279
280 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
281 {
282 struct sdhci_pci_slot *slot = dev_id;
283 struct sdhci_host *host = slot->host;
284
285 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
286 return IRQ_HANDLED;
287 }
288
289 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
290 {
291 int err, irq, gpio = slot->cd_gpio;
292
293 slot->cd_gpio = -EINVAL;
294 slot->cd_irq = -EINVAL;
295
296 if (!gpio_is_valid(gpio))
297 return;
298
299 err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
300 if (err < 0)
301 goto out;
302
303 err = gpio_direction_input(gpio);
304 if (err < 0)
305 goto out_free;
306
307 irq = gpio_to_irq(gpio);
308 if (irq < 0)
309 goto out_free;
310
311 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
312 IRQF_TRIGGER_FALLING, "sd_cd", slot);
313 if (err)
314 goto out_free;
315
316 slot->cd_gpio = gpio;
317 slot->cd_irq = irq;
318
319 return;
320
321 out_free:
322 devm_gpio_free(&slot->chip->pdev->dev, gpio);
323 out:
324 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
325 }
326
327 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
328 {
329 if (slot->cd_irq >= 0)
330 free_irq(slot->cd_irq, slot);
331 }
332
333 #else
334
335 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
336 {
337 }
338
339 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
340 {
341 }
342
343 #endif
344
345 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
346 {
347 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
348 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
349 return 0;
350 }
351
352 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
353 {
354 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
355 return 0;
356 }
357
358 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
359 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
360 .probe_slot = mrst_hc_probe_slot,
361 };
362
363 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
364 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
365 .probe = mrst_hc_probe,
366 };
367
368 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
369 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
370 .allow_runtime_pm = true,
371 .own_cd_for_runtime_pm = true,
372 };
373
374 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
375 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
376 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
377 .allow_runtime_pm = true,
378 .probe_slot = mfd_sdio_probe_slot,
379 };
380
381 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
382 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
383 .allow_runtime_pm = true,
384 .probe_slot = mfd_emmc_probe_slot,
385 };
386
387 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
388 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
389 .probe_slot = pch_hc_probe_slot,
390 };
391
392 enum {
393 INTEL_DSM_FNS = 0,
394 INTEL_DSM_V18_SWITCH = 3,
395 INTEL_DSM_DRV_STRENGTH = 9,
396 INTEL_DSM_D3_RETUNE = 10,
397 };
398
399 struct intel_host {
400 u32 dsm_fns;
401 int drv_strength;
402 bool d3_retune;
403 };
404
405 static const guid_t intel_dsm_guid =
406 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
407 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
408
409 static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
410 unsigned int fn, u32 *result)
411 {
412 union acpi_object *obj;
413 int err = 0;
414 size_t len;
415
416 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
417 if (!obj)
418 return -EOPNOTSUPP;
419
420 if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
421 err = -EINVAL;
422 goto out;
423 }
424
425 len = min_t(size_t, obj->buffer.length, 4);
426
427 *result = 0;
428 memcpy(result, obj->buffer.pointer, len);
429 out:
430 ACPI_FREE(obj);
431
432 return err;
433 }
434
435 static int intel_dsm(struct intel_host *intel_host, struct device *dev,
436 unsigned int fn, u32 *result)
437 {
438 if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
439 return -EOPNOTSUPP;
440
441 return __intel_dsm(intel_host, dev, fn, result);
442 }
443
444 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
445 struct mmc_host *mmc)
446 {
447 int err;
448 u32 val;
449
450 intel_host->d3_retune = true;
451
452 err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
453 if (err) {
454 pr_debug("%s: DSM not supported, error %d\n",
455 mmc_hostname(mmc), err);
456 return;
457 }
458
459 pr_debug("%s: DSM function mask %#x\n",
460 mmc_hostname(mmc), intel_host->dsm_fns);
461
462 err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
463 intel_host->drv_strength = err ? 0 : val;
464
465 err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
466 intel_host->d3_retune = err ? true : !!val;
467 }
468
469 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
470 {
471 u8 reg;
472
473 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
474 reg |= 0x10;
475 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
476 /* For eMMC, minimum is 1us but give it 9us for good measure */
477 udelay(9);
478 reg &= ~0x10;
479 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
480 /* For eMMC, minimum is 200us but give it 300us for good measure */
481 usleep_range(300, 1000);
482 }
483
484 static int intel_select_drive_strength(struct mmc_card *card,
485 unsigned int max_dtr, int host_drv,
486 int card_drv, int *drv_type)
487 {
488 struct sdhci_host *host = mmc_priv(card->host);
489 struct sdhci_pci_slot *slot = sdhci_priv(host);
490 struct intel_host *intel_host = sdhci_pci_priv(slot);
491
492 return intel_host->drv_strength;
493 }
494
495 static int bxt_get_cd(struct mmc_host *mmc)
496 {
497 int gpio_cd = mmc_gpio_get_cd(mmc);
498 struct sdhci_host *host = mmc_priv(mmc);
499 unsigned long flags;
500 int ret = 0;
501
502 if (!gpio_cd)
503 return 0;
504
505 spin_lock_irqsave(&host->lock, flags);
506
507 if (host->flags & SDHCI_DEVICE_DEAD)
508 goto out;
509
510 ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
511 out:
512 spin_unlock_irqrestore(&host->lock, flags);
513
514 return ret;
515 }
516
517 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
518 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
519
520 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
521 unsigned short vdd)
522 {
523 int cntr;
524 u8 reg;
525
526 sdhci_set_power(host, mode, vdd);
527
528 if (mode == MMC_POWER_OFF)
529 return;
530
531 /*
532 * Bus power might not enable after D3 -> D0 transition due to the
533 * present state not yet having propagated. Retry for up to 2ms.
534 */
535 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
536 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
537 if (reg & SDHCI_POWER_ON)
538 break;
539 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
540 reg |= SDHCI_POWER_ON;
541 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
542 }
543 }
544
545 #define INTEL_HS400_ES_REG 0x78
546 #define INTEL_HS400_ES_BIT BIT(0)
547
548 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
549 struct mmc_ios *ios)
550 {
551 struct sdhci_host *host = mmc_priv(mmc);
552 u32 val;
553
554 val = sdhci_readl(host, INTEL_HS400_ES_REG);
555 if (ios->enhanced_strobe)
556 val |= INTEL_HS400_ES_BIT;
557 else
558 val &= ~INTEL_HS400_ES_BIT;
559 sdhci_writel(host, val, INTEL_HS400_ES_REG);
560 }
561
562 static void sdhci_intel_voltage_switch(struct sdhci_host *host)
563 {
564 struct sdhci_pci_slot *slot = sdhci_priv(host);
565 struct intel_host *intel_host = sdhci_pci_priv(slot);
566 struct device *dev = &slot->chip->pdev->dev;
567 u32 result = 0;
568 int err;
569
570 err = intel_dsm(intel_host, dev, INTEL_DSM_V18_SWITCH, &result);
571 pr_debug("%s: %s DSM error %d result %u\n",
572 mmc_hostname(host->mmc), __func__, err, result);
573 }
574
575 static const struct sdhci_ops sdhci_intel_byt_ops = {
576 .set_clock = sdhci_set_clock,
577 .set_power = sdhci_intel_set_power,
578 .enable_dma = sdhci_pci_enable_dma,
579 .set_bus_width = sdhci_set_bus_width,
580 .reset = sdhci_reset,
581 .set_uhs_signaling = sdhci_set_uhs_signaling,
582 .hw_reset = sdhci_pci_hw_reset,
583 .voltage_switch = sdhci_intel_voltage_switch,
584 };
585
586 static void byt_read_dsm(struct sdhci_pci_slot *slot)
587 {
588 struct intel_host *intel_host = sdhci_pci_priv(slot);
589 struct device *dev = &slot->chip->pdev->dev;
590 struct mmc_host *mmc = slot->host->mmc;
591
592 intel_dsm_init(intel_host, dev, mmc);
593 slot->chip->rpm_retune = intel_host->d3_retune;
594 }
595
596 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
597 {
598 byt_read_dsm(slot);
599 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
600 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
601 MMC_CAP_CMD_DURING_TFR |
602 MMC_CAP_WAIT_WHILE_BUSY;
603 slot->hw_reset = sdhci_pci_int_hw_reset;
604 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
605 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
606 slot->host->mmc_host_ops.select_drive_strength =
607 intel_select_drive_strength;
608 return 0;
609 }
610
611 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
612 {
613 int ret = byt_emmc_probe_slot(slot);
614
615 if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
616 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
617 slot->host->mmc_host_ops.hs400_enhanced_strobe =
618 intel_hs400_enhanced_strobe;
619 }
620
621 return ret;
622 }
623
624 #ifdef CONFIG_ACPI
625 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
626 {
627 acpi_status status;
628 unsigned long long max_freq;
629
630 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
631 "MXFQ", NULL, &max_freq);
632 if (ACPI_FAILURE(status)) {
633 dev_err(&slot->chip->pdev->dev,
634 "MXFQ not found in acpi table\n");
635 return -EINVAL;
636 }
637
638 slot->host->mmc->f_max = max_freq * 1000000;
639
640 return 0;
641 }
642 #else
643 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
644 {
645 return 0;
646 }
647 #endif
648
649 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
650 {
651 int err;
652
653 byt_read_dsm(slot);
654
655 err = ni_set_max_freq(slot);
656 if (err)
657 return err;
658
659 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
660 MMC_CAP_WAIT_WHILE_BUSY;
661 return 0;
662 }
663
664 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
665 {
666 byt_read_dsm(slot);
667 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
668 MMC_CAP_WAIT_WHILE_BUSY;
669 return 0;
670 }
671
672 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
673 {
674 byt_read_dsm(slot);
675 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
676 MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
677 slot->cd_idx = 0;
678 slot->cd_override_level = true;
679 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
680 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
681 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
682 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
683 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
684
685 return 0;
686 }
687
688 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
689 .allow_runtime_pm = true,
690 .probe_slot = byt_emmc_probe_slot,
691 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
692 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
693 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
694 SDHCI_QUIRK2_STOP_WITH_TC,
695 .ops = &sdhci_intel_byt_ops,
696 .priv_size = sizeof(struct intel_host),
697 };
698
699 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
700 .allow_runtime_pm = true,
701 .probe_slot = glk_emmc_probe_slot,
702 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
703 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
704 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
705 SDHCI_QUIRK2_STOP_WITH_TC,
706 .ops = &sdhci_intel_byt_ops,
707 .priv_size = sizeof(struct intel_host),
708 };
709
710 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
711 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
712 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
713 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
714 .allow_runtime_pm = true,
715 .probe_slot = ni_byt_sdio_probe_slot,
716 .ops = &sdhci_intel_byt_ops,
717 .priv_size = sizeof(struct intel_host),
718 };
719
720 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
721 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
722 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
723 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
724 .allow_runtime_pm = true,
725 .probe_slot = byt_sdio_probe_slot,
726 .ops = &sdhci_intel_byt_ops,
727 .priv_size = sizeof(struct intel_host),
728 };
729
730 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
731 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
732 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
733 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
734 SDHCI_QUIRK2_STOP_WITH_TC,
735 .allow_runtime_pm = true,
736 .own_cd_for_runtime_pm = true,
737 .probe_slot = byt_sd_probe_slot,
738 .ops = &sdhci_intel_byt_ops,
739 .priv_size = sizeof(struct intel_host),
740 };
741
742 /* Define Host controllers for Intel Merrifield platform */
743 #define INTEL_MRFLD_EMMC_0 0
744 #define INTEL_MRFLD_EMMC_1 1
745 #define INTEL_MRFLD_SD 2
746 #define INTEL_MRFLD_SDIO 3
747
748 #ifdef CONFIG_ACPI
749 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
750 {
751 struct acpi_device *device, *child;
752
753 device = ACPI_COMPANION(&slot->chip->pdev->dev);
754 if (!device)
755 return;
756
757 acpi_device_fix_up_power(device);
758 list_for_each_entry(child, &device->children, node)
759 if (child->status.present && child->status.enabled)
760 acpi_device_fix_up_power(child);
761 }
762 #else
763 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
764 #endif
765
766 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
767 {
768 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
769
770 switch (func) {
771 case INTEL_MRFLD_EMMC_0:
772 case INTEL_MRFLD_EMMC_1:
773 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
774 MMC_CAP_8_BIT_DATA |
775 MMC_CAP_1_8V_DDR;
776 break;
777 case INTEL_MRFLD_SD:
778 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
779 break;
780 case INTEL_MRFLD_SDIO:
781 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
782 MMC_CAP_POWER_OFF_CARD;
783 break;
784 default:
785 return -ENODEV;
786 }
787
788 intel_mrfld_mmc_fix_up_power_slot(slot);
789 return 0;
790 }
791
792 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
793 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
794 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
795 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
796 .allow_runtime_pm = true,
797 .probe_slot = intel_mrfld_mmc_probe_slot,
798 };
799
800 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
801 {
802 u8 scratch;
803 int ret;
804
805 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
806 if (ret)
807 return ret;
808
809 /*
810 * Turn PMOS on [bit 0], set over current detection to 2.4 V
811 * [bit 1:2] and enable over current debouncing [bit 6].
812 */
813 if (on)
814 scratch |= 0x47;
815 else
816 scratch &= ~0x47;
817
818 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
819 }
820
821 static int jmicron_probe(struct sdhci_pci_chip *chip)
822 {
823 int ret;
824 u16 mmcdev = 0;
825
826 if (chip->pdev->revision == 0) {
827 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
828 SDHCI_QUIRK_32BIT_DMA_SIZE |
829 SDHCI_QUIRK_32BIT_ADMA_SIZE |
830 SDHCI_QUIRK_RESET_AFTER_REQUEST |
831 SDHCI_QUIRK_BROKEN_SMALL_PIO;
832 }
833
834 /*
835 * JMicron chips can have two interfaces to the same hardware
836 * in order to work around limitations in Microsoft's driver.
837 * We need to make sure we only bind to one of them.
838 *
839 * This code assumes two things:
840 *
841 * 1. The PCI code adds subfunctions in order.
842 *
843 * 2. The MMC interface has a lower subfunction number
844 * than the SD interface.
845 */
846 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
847 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
848 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
849 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
850
851 if (mmcdev) {
852 struct pci_dev *sd_dev;
853
854 sd_dev = NULL;
855 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
856 mmcdev, sd_dev)) != NULL) {
857 if ((PCI_SLOT(chip->pdev->devfn) ==
858 PCI_SLOT(sd_dev->devfn)) &&
859 (chip->pdev->bus == sd_dev->bus))
860 break;
861 }
862
863 if (sd_dev) {
864 pci_dev_put(sd_dev);
865 dev_info(&chip->pdev->dev, "Refusing to bind to "
866 "secondary interface.\n");
867 return -ENODEV;
868 }
869 }
870
871 /*
872 * JMicron chips need a bit of a nudge to enable the power
873 * output pins.
874 */
875 ret = jmicron_pmos(chip, 1);
876 if (ret) {
877 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
878 return ret;
879 }
880
881 /* quirk for unsable RO-detection on JM388 chips */
882 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
883 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
884 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
885
886 return 0;
887 }
888
889 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
890 {
891 u8 scratch;
892
893 scratch = readb(host->ioaddr + 0xC0);
894
895 if (on)
896 scratch |= 0x01;
897 else
898 scratch &= ~0x01;
899
900 writeb(scratch, host->ioaddr + 0xC0);
901 }
902
903 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
904 {
905 if (slot->chip->pdev->revision == 0) {
906 u16 version;
907
908 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
909 version = (version & SDHCI_VENDOR_VER_MASK) >>
910 SDHCI_VENDOR_VER_SHIFT;
911
912 /*
913 * Older versions of the chip have lots of nasty glitches
914 * in the ADMA engine. It's best just to avoid it
915 * completely.
916 */
917 if (version < 0xAC)
918 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
919 }
920
921 /* JM388 MMC doesn't support 1.8V while SD supports it */
922 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
923 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
924 MMC_VDD_29_30 | MMC_VDD_30_31 |
925 MMC_VDD_165_195; /* allow 1.8V */
926 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
927 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
928 }
929
930 /*
931 * The secondary interface requires a bit set to get the
932 * interrupts.
933 */
934 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
935 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
936 jmicron_enable_mmc(slot->host, 1);
937
938 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
939
940 return 0;
941 }
942
943 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
944 {
945 if (dead)
946 return;
947
948 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
949 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
950 jmicron_enable_mmc(slot->host, 0);
951 }
952
953 #ifdef CONFIG_PM_SLEEP
954 static int jmicron_suspend(struct sdhci_pci_chip *chip)
955 {
956 int i, ret;
957
958 ret = __sdhci_pci_suspend_host(chip);
959 if (ret)
960 return ret;
961
962 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
963 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
964 for (i = 0; i < chip->num_slots; i++)
965 jmicron_enable_mmc(chip->slots[i]->host, 0);
966 }
967
968 sdhci_pci_init_wakeup(chip);
969
970 return 0;
971 }
972
973 static int jmicron_resume(struct sdhci_pci_chip *chip)
974 {
975 int ret, i;
976
977 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
978 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
979 for (i = 0; i < chip->num_slots; i++)
980 jmicron_enable_mmc(chip->slots[i]->host, 1);
981 }
982
983 ret = jmicron_pmos(chip, 1);
984 if (ret) {
985 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
986 return ret;
987 }
988
989 return sdhci_pci_resume_host(chip);
990 }
991 #endif
992
993 static const struct sdhci_pci_fixes sdhci_o2 = {
994 .probe = sdhci_pci_o2_probe,
995 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
996 .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
997 .probe_slot = sdhci_pci_o2_probe_slot,
998 #ifdef CONFIG_PM_SLEEP
999 .resume = sdhci_pci_o2_resume,
1000 #endif
1001 };
1002
1003 static const struct sdhci_pci_fixes sdhci_jmicron = {
1004 .probe = jmicron_probe,
1005
1006 .probe_slot = jmicron_probe_slot,
1007 .remove_slot = jmicron_remove_slot,
1008
1009 #ifdef CONFIG_PM_SLEEP
1010 .suspend = jmicron_suspend,
1011 .resume = jmicron_resume,
1012 #endif
1013 };
1014
1015 /* SysKonnect CardBus2SDIO extra registers */
1016 #define SYSKT_CTRL 0x200
1017 #define SYSKT_RDFIFO_STAT 0x204
1018 #define SYSKT_WRFIFO_STAT 0x208
1019 #define SYSKT_POWER_DATA 0x20c
1020 #define SYSKT_POWER_330 0xef
1021 #define SYSKT_POWER_300 0xf8
1022 #define SYSKT_POWER_184 0xcc
1023 #define SYSKT_POWER_CMD 0x20d
1024 #define SYSKT_POWER_START (1 << 7)
1025 #define SYSKT_POWER_STATUS 0x20e
1026 #define SYSKT_POWER_STATUS_OK (1 << 0)
1027 #define SYSKT_BOARD_REV 0x210
1028 #define SYSKT_CHIP_REV 0x211
1029 #define SYSKT_CONF_DATA 0x212
1030 #define SYSKT_CONF_DATA_1V8 (1 << 2)
1031 #define SYSKT_CONF_DATA_2V5 (1 << 1)
1032 #define SYSKT_CONF_DATA_3V3 (1 << 0)
1033
1034 static int syskt_probe(struct sdhci_pci_chip *chip)
1035 {
1036 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1037 chip->pdev->class &= ~0x0000FF;
1038 chip->pdev->class |= PCI_SDHCI_IFDMA;
1039 }
1040 return 0;
1041 }
1042
1043 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1044 {
1045 int tm, ps;
1046
1047 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1048 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1049 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1050 "board rev %d.%d, chip rev %d.%d\n",
1051 board_rev >> 4, board_rev & 0xf,
1052 chip_rev >> 4, chip_rev & 0xf);
1053 if (chip_rev >= 0x20)
1054 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1055
1056 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1057 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1058 udelay(50);
1059 tm = 10; /* Wait max 1 ms */
1060 do {
1061 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1062 if (ps & SYSKT_POWER_STATUS_OK)
1063 break;
1064 udelay(100);
1065 } while (--tm);
1066 if (!tm) {
1067 dev_err(&slot->chip->pdev->dev,
1068 "power regulator never stabilized");
1069 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1070 return -ENODEV;
1071 }
1072
1073 return 0;
1074 }
1075
1076 static const struct sdhci_pci_fixes sdhci_syskt = {
1077 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1078 .probe = syskt_probe,
1079 .probe_slot = syskt_probe_slot,
1080 };
1081
1082 static int via_probe(struct sdhci_pci_chip *chip)
1083 {
1084 if (chip->pdev->revision == 0x10)
1085 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1086
1087 return 0;
1088 }
1089
1090 static const struct sdhci_pci_fixes sdhci_via = {
1091 .probe = via_probe,
1092 };
1093
1094 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1095 {
1096 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1097 return 0;
1098 }
1099
1100 static const struct sdhci_pci_fixes sdhci_rtsx = {
1101 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1102 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1103 SDHCI_QUIRK2_BROKEN_DDR50,
1104 .probe_slot = rtsx_probe_slot,
1105 };
1106
1107 /*AMD chipset generation*/
1108 enum amd_chipset_gen {
1109 AMD_CHIPSET_BEFORE_ML,
1110 AMD_CHIPSET_CZ,
1111 AMD_CHIPSET_NL,
1112 AMD_CHIPSET_UNKNOWN,
1113 };
1114
1115 /* AMD registers */
1116 #define AMD_SD_AUTO_PATTERN 0xB8
1117 #define AMD_MSLEEP_DURATION 4
1118 #define AMD_SD_MISC_CONTROL 0xD0
1119 #define AMD_MAX_TUNE_VALUE 0x0B
1120 #define AMD_AUTO_TUNE_SEL 0x10800
1121 #define AMD_FIFO_PTR 0x30
1122 #define AMD_BIT_MASK 0x1F
1123
1124 static void amd_tuning_reset(struct sdhci_host *host)
1125 {
1126 unsigned int val;
1127
1128 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1129 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1130 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1131
1132 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1133 val &= ~SDHCI_CTRL_EXEC_TUNING;
1134 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1135 }
1136
1137 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1138 {
1139 unsigned int val;
1140
1141 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1142 val &= ~AMD_BIT_MASK;
1143 val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1144 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1145 }
1146
1147 static void amd_enable_manual_tuning(struct pci_dev *pdev)
1148 {
1149 unsigned int val;
1150
1151 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1152 val |= AMD_FIFO_PTR;
1153 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1154 }
1155
1156 static int amd_execute_tuning(struct sdhci_host *host, u32 opcode)
1157 {
1158 struct sdhci_pci_slot *slot = sdhci_priv(host);
1159 struct pci_dev *pdev = slot->chip->pdev;
1160 u8 valid_win = 0;
1161 u8 valid_win_max = 0;
1162 u8 valid_win_end = 0;
1163 u8 ctrl, tune_around;
1164
1165 amd_tuning_reset(host);
1166
1167 for (tune_around = 0; tune_around < 12; tune_around++) {
1168 amd_config_tuning_phase(pdev, tune_around);
1169
1170 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1171 valid_win = 0;
1172 msleep(AMD_MSLEEP_DURATION);
1173 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1174 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1175 } else if (++valid_win > valid_win_max) {
1176 valid_win_max = valid_win;
1177 valid_win_end = tune_around;
1178 }
1179 }
1180
1181 if (!valid_win_max) {
1182 dev_err(&pdev->dev, "no tuning point found\n");
1183 return -EIO;
1184 }
1185
1186 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1187
1188 amd_enable_manual_tuning(pdev);
1189
1190 host->mmc->retune_period = 0;
1191
1192 return 0;
1193 }
1194
1195 static int amd_probe(struct sdhci_pci_chip *chip)
1196 {
1197 struct pci_dev *smbus_dev;
1198 enum amd_chipset_gen gen;
1199
1200 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1201 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1202 if (smbus_dev) {
1203 gen = AMD_CHIPSET_BEFORE_ML;
1204 } else {
1205 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1206 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1207 if (smbus_dev) {
1208 if (smbus_dev->revision < 0x51)
1209 gen = AMD_CHIPSET_CZ;
1210 else
1211 gen = AMD_CHIPSET_NL;
1212 } else {
1213 gen = AMD_CHIPSET_UNKNOWN;
1214 }
1215 }
1216
1217 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1218 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1219
1220 return 0;
1221 }
1222
1223 static const struct sdhci_ops amd_sdhci_pci_ops = {
1224 .set_clock = sdhci_set_clock,
1225 .enable_dma = sdhci_pci_enable_dma,
1226 .set_bus_width = sdhci_set_bus_width,
1227 .reset = sdhci_reset,
1228 .set_uhs_signaling = sdhci_set_uhs_signaling,
1229 .platform_execute_tuning = amd_execute_tuning,
1230 };
1231
1232 static const struct sdhci_pci_fixes sdhci_amd = {
1233 .probe = amd_probe,
1234 .ops = &amd_sdhci_pci_ops,
1235 };
1236
1237 static const struct pci_device_id pci_ids[] = {
1238 SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh),
1239 SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc),
1240 SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1241 SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1242 SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712),
1243 SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1244 SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714),
1245 SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1246 SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1247 SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron),
1248 SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1249 SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron),
1250 SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1251 SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1252 SDHCI_PCI_DEVICE(VIA, 95D0, via),
1253 SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1254 SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk),
1255 SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0),
1256 SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2),
1257 SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2),
1258 SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd),
1259 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1260 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1261 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1262 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1263 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1264 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1265 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc),
1266 SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1267 SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio),
1268 SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd),
1269 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1270 SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc),
1271 SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio),
1272 SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd),
1273 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1274 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1275 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1276 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1277 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1278 SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1279 SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc),
1280 SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio),
1281 SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd),
1282 SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc),
1283 SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc),
1284 SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc),
1285 SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio),
1286 SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd),
1287 SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1288 SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1289 SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd),
1290 SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc),
1291 SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio),
1292 SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd),
1293 SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc),
1294 SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio),
1295 SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd),
1296 SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc),
1297 SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd),
1298 SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
1299 SDHCI_PCI_DEVICE(O2, 8120, o2),
1300 SDHCI_PCI_DEVICE(O2, 8220, o2),
1301 SDHCI_PCI_DEVICE(O2, 8221, o2),
1302 SDHCI_PCI_DEVICE(O2, 8320, o2),
1303 SDHCI_PCI_DEVICE(O2, 8321, o2),
1304 SDHCI_PCI_DEVICE(O2, FUJIN2, o2),
1305 SDHCI_PCI_DEVICE(O2, SDS0, o2),
1306 SDHCI_PCI_DEVICE(O2, SDS1, o2),
1307 SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1308 SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1309 SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1310 /* Generic SD host controller */
1311 {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1312 { /* end: all zeroes */ },
1313 };
1314
1315 MODULE_DEVICE_TABLE(pci, pci_ids);
1316
1317 /*****************************************************************************\
1318 * *
1319 * SDHCI core callbacks *
1320 * *
1321 \*****************************************************************************/
1322
1323 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1324 {
1325 struct sdhci_pci_slot *slot;
1326 struct pci_dev *pdev;
1327
1328 slot = sdhci_priv(host);
1329 pdev = slot->chip->pdev;
1330
1331 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1332 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1333 (host->flags & SDHCI_USE_SDMA)) {
1334 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1335 "doesn't fully claim to support it.\n");
1336 }
1337
1338 pci_set_master(pdev);
1339
1340 return 0;
1341 }
1342
1343 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1344 {
1345 struct sdhci_pci_slot *slot = sdhci_priv(host);
1346 int rst_n_gpio = slot->rst_n_gpio;
1347
1348 if (!gpio_is_valid(rst_n_gpio))
1349 return;
1350 gpio_set_value_cansleep(rst_n_gpio, 0);
1351 /* For eMMC, minimum is 1us but give it 10us for good measure */
1352 udelay(10);
1353 gpio_set_value_cansleep(rst_n_gpio, 1);
1354 /* For eMMC, minimum is 200us but give it 300us for good measure */
1355 usleep_range(300, 1000);
1356 }
1357
1358 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1359 {
1360 struct sdhci_pci_slot *slot = sdhci_priv(host);
1361
1362 if (slot->hw_reset)
1363 slot->hw_reset(host);
1364 }
1365
1366 static const struct sdhci_ops sdhci_pci_ops = {
1367 .set_clock = sdhci_set_clock,
1368 .enable_dma = sdhci_pci_enable_dma,
1369 .set_bus_width = sdhci_set_bus_width,
1370 .reset = sdhci_reset,
1371 .set_uhs_signaling = sdhci_set_uhs_signaling,
1372 .hw_reset = sdhci_pci_hw_reset,
1373 };
1374
1375 /*****************************************************************************\
1376 * *
1377 * Suspend/resume *
1378 * *
1379 \*****************************************************************************/
1380
1381 #ifdef CONFIG_PM_SLEEP
1382 static int sdhci_pci_suspend(struct device *dev)
1383 {
1384 struct pci_dev *pdev = to_pci_dev(dev);
1385 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1386
1387 if (!chip)
1388 return 0;
1389
1390 if (chip->fixes && chip->fixes->suspend)
1391 return chip->fixes->suspend(chip);
1392
1393 return sdhci_pci_suspend_host(chip);
1394 }
1395
1396 static int sdhci_pci_resume(struct device *dev)
1397 {
1398 struct pci_dev *pdev = to_pci_dev(dev);
1399 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1400
1401 if (!chip)
1402 return 0;
1403
1404 if (chip->fixes && chip->fixes->resume)
1405 return chip->fixes->resume(chip);
1406
1407 return sdhci_pci_resume_host(chip);
1408 }
1409 #endif
1410
1411 #ifdef CONFIG_PM
1412 static int sdhci_pci_runtime_suspend(struct device *dev)
1413 {
1414 struct pci_dev *pdev = to_pci_dev(dev);
1415 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1416
1417 if (!chip)
1418 return 0;
1419
1420 if (chip->fixes && chip->fixes->runtime_suspend)
1421 return chip->fixes->runtime_suspend(chip);
1422
1423 return sdhci_pci_runtime_suspend_host(chip);
1424 }
1425
1426 static int sdhci_pci_runtime_resume(struct device *dev)
1427 {
1428 struct pci_dev *pdev = to_pci_dev(dev);
1429 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1430
1431 if (!chip)
1432 return 0;
1433
1434 if (chip->fixes && chip->fixes->runtime_resume)
1435 return chip->fixes->runtime_resume(chip);
1436
1437 return sdhci_pci_runtime_resume_host(chip);
1438 }
1439 #endif
1440
1441 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1442 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1443 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1444 sdhci_pci_runtime_resume, NULL)
1445 };
1446
1447 /*****************************************************************************\
1448 * *
1449 * Device probing/removal *
1450 * *
1451 \*****************************************************************************/
1452
1453 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1454 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1455 int slotno)
1456 {
1457 struct sdhci_pci_slot *slot;
1458 struct sdhci_host *host;
1459 int ret, bar = first_bar + slotno;
1460 size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
1461
1462 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1463 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1464 return ERR_PTR(-ENODEV);
1465 }
1466
1467 if (pci_resource_len(pdev, bar) < 0x100) {
1468 dev_err(&pdev->dev, "Invalid iomem size. You may "
1469 "experience problems.\n");
1470 }
1471
1472 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1473 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1474 return ERR_PTR(-ENODEV);
1475 }
1476
1477 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1478 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1479 return ERR_PTR(-ENODEV);
1480 }
1481
1482 host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
1483 if (IS_ERR(host)) {
1484 dev_err(&pdev->dev, "cannot allocate host\n");
1485 return ERR_CAST(host);
1486 }
1487
1488 slot = sdhci_priv(host);
1489
1490 slot->chip = chip;
1491 slot->host = host;
1492 slot->rst_n_gpio = -EINVAL;
1493 slot->cd_gpio = -EINVAL;
1494 slot->cd_idx = -1;
1495
1496 /* Retrieve platform data if there is any */
1497 if (*sdhci_pci_get_data)
1498 slot->data = sdhci_pci_get_data(pdev, slotno);
1499
1500 if (slot->data) {
1501 if (slot->data->setup) {
1502 ret = slot->data->setup(slot->data);
1503 if (ret) {
1504 dev_err(&pdev->dev, "platform setup failed\n");
1505 goto free;
1506 }
1507 }
1508 slot->rst_n_gpio = slot->data->rst_n_gpio;
1509 slot->cd_gpio = slot->data->cd_gpio;
1510 }
1511
1512 host->hw_name = "PCI";
1513 host->ops = chip->fixes && chip->fixes->ops ?
1514 chip->fixes->ops :
1515 &sdhci_pci_ops;
1516 host->quirks = chip->quirks;
1517 host->quirks2 = chip->quirks2;
1518
1519 host->irq = pdev->irq;
1520
1521 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1522 if (ret) {
1523 dev_err(&pdev->dev, "cannot request region\n");
1524 goto cleanup;
1525 }
1526
1527 host->ioaddr = pcim_iomap_table(pdev)[bar];
1528
1529 if (chip->fixes && chip->fixes->probe_slot) {
1530 ret = chip->fixes->probe_slot(slot);
1531 if (ret)
1532 goto cleanup;
1533 }
1534
1535 if (gpio_is_valid(slot->rst_n_gpio)) {
1536 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1537 gpio_direction_output(slot->rst_n_gpio, 1);
1538 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1539 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1540 } else {
1541 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1542 slot->rst_n_gpio = -EINVAL;
1543 }
1544 }
1545
1546 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1547 host->mmc->slotno = slotno;
1548 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1549
1550 if (slot->cd_idx >= 0) {
1551 ret = mmc_gpiod_request_cd(host->mmc, NULL, slot->cd_idx,
1552 slot->cd_override_level, 0, NULL);
1553 if (ret == -EPROBE_DEFER)
1554 goto remove;
1555
1556 if (ret) {
1557 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1558 slot->cd_idx = -1;
1559 }
1560 }
1561
1562 if (chip->fixes && chip->fixes->add_host)
1563 ret = chip->fixes->add_host(slot);
1564 else
1565 ret = sdhci_add_host(host);
1566 if (ret)
1567 goto remove;
1568
1569 sdhci_pci_add_own_cd(slot);
1570
1571 /*
1572 * Check if the chip needs a separate GPIO for card detect to wake up
1573 * from runtime suspend. If it is not there, don't allow runtime PM.
1574 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1575 */
1576 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1577 !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1578 chip->allow_runtime_pm = false;
1579
1580 return slot;
1581
1582 remove:
1583 if (chip->fixes && chip->fixes->remove_slot)
1584 chip->fixes->remove_slot(slot, 0);
1585
1586 cleanup:
1587 if (slot->data && slot->data->cleanup)
1588 slot->data->cleanup(slot->data);
1589
1590 free:
1591 sdhci_free_host(host);
1592
1593 return ERR_PTR(ret);
1594 }
1595
1596 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1597 {
1598 int dead;
1599 u32 scratch;
1600
1601 sdhci_pci_remove_own_cd(slot);
1602
1603 dead = 0;
1604 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1605 if (scratch == (u32)-1)
1606 dead = 1;
1607
1608 sdhci_remove_host(slot->host, dead);
1609
1610 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1611 slot->chip->fixes->remove_slot(slot, dead);
1612
1613 if (slot->data && slot->data->cleanup)
1614 slot->data->cleanup(slot->data);
1615
1616 sdhci_free_host(slot->host);
1617 }
1618
1619 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1620 {
1621 pm_suspend_ignore_children(dev, 1);
1622 pm_runtime_set_autosuspend_delay(dev, 50);
1623 pm_runtime_use_autosuspend(dev);
1624 pm_runtime_allow(dev);
1625 /* Stay active until mmc core scans for a card */
1626 pm_runtime_put_noidle(dev);
1627 }
1628
1629 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1630 {
1631 pm_runtime_forbid(dev);
1632 pm_runtime_get_noresume(dev);
1633 }
1634
1635 static int sdhci_pci_probe(struct pci_dev *pdev,
1636 const struct pci_device_id *ent)
1637 {
1638 struct sdhci_pci_chip *chip;
1639 struct sdhci_pci_slot *slot;
1640
1641 u8 slots, first_bar;
1642 int ret, i;
1643
1644 BUG_ON(pdev == NULL);
1645 BUG_ON(ent == NULL);
1646
1647 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1648 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1649
1650 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1651 if (ret)
1652 return ret;
1653
1654 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1655 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1656 if (slots == 0)
1657 return -ENODEV;
1658
1659 BUG_ON(slots > MAX_SLOTS);
1660
1661 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1662 if (ret)
1663 return ret;
1664
1665 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1666
1667 if (first_bar > 5) {
1668 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1669 return -ENODEV;
1670 }
1671
1672 ret = pcim_enable_device(pdev);
1673 if (ret)
1674 return ret;
1675
1676 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
1677 if (!chip)
1678 return -ENOMEM;
1679
1680 chip->pdev = pdev;
1681 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1682 if (chip->fixes) {
1683 chip->quirks = chip->fixes->quirks;
1684 chip->quirks2 = chip->fixes->quirks2;
1685 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1686 }
1687 chip->num_slots = slots;
1688 chip->pm_retune = true;
1689 chip->rpm_retune = true;
1690
1691 pci_set_drvdata(pdev, chip);
1692
1693 if (chip->fixes && chip->fixes->probe) {
1694 ret = chip->fixes->probe(chip);
1695 if (ret)
1696 return ret;
1697 }
1698
1699 slots = chip->num_slots; /* Quirk may have changed this */
1700
1701 for (i = 0; i < slots; i++) {
1702 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1703 if (IS_ERR(slot)) {
1704 for (i--; i >= 0; i--)
1705 sdhci_pci_remove_slot(chip->slots[i]);
1706 return PTR_ERR(slot);
1707 }
1708
1709 chip->slots[i] = slot;
1710 }
1711
1712 if (chip->allow_runtime_pm)
1713 sdhci_pci_runtime_pm_allow(&pdev->dev);
1714
1715 return 0;
1716 }
1717
1718 static void sdhci_pci_remove(struct pci_dev *pdev)
1719 {
1720 int i;
1721 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1722
1723 if (chip->allow_runtime_pm)
1724 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1725
1726 for (i = 0; i < chip->num_slots; i++)
1727 sdhci_pci_remove_slot(chip->slots[i]);
1728 }
1729
1730 static struct pci_driver sdhci_driver = {
1731 .name = "sdhci-pci",
1732 .id_table = pci_ids,
1733 .probe = sdhci_pci_probe,
1734 .remove = sdhci_pci_remove,
1735 .driver = {
1736 .pm = &sdhci_pci_pm_ops
1737 },
1738 };
1739
1740 module_pci_driver(sdhci_driver);
1741
1742 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1743 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1744 MODULE_LICENSE("GPL");
ubuntu-bionic-kernel mirror