]> Git Repo - linux.git/blob - drivers/mmc/host/sdhci-pci-core.c
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux.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/bitfield.h>
16 #include <linux/string.h>
17 #include <linux/delay.h>
18 #include <linux/highmem.h>
19 #include <linux/module.h>
20 #include <linux/pci.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/slab.h>
23 #include <linux/device.h>
24 #include <linux/mmc/host.h>
25 #include <linux/mmc/mmc.h>
26 #include <linux/scatterlist.h>
27 #include <linux/io.h>
28 #include <linux/gpio.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/mmc/slot-gpio.h>
31 #include <linux/mmc/sdhci-pci-data.h>
32 #include <linux/acpi.h>
33
34 #include "cqhci.h"
35
36 #include "sdhci.h"
37 #include "sdhci-pci.h"
38
39 static void sdhci_pci_hw_reset(struct sdhci_host *host);
40
41 #ifdef CONFIG_PM_SLEEP
42 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
43 {
44         mmc_pm_flag_t pm_flags = 0;
45         bool cap_cd_wake = false;
46         int i;
47
48         for (i = 0; i < chip->num_slots; i++) {
49                 struct sdhci_pci_slot *slot = chip->slots[i];
50
51                 if (slot) {
52                         pm_flags |= slot->host->mmc->pm_flags;
53                         if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
54                                 cap_cd_wake = true;
55                 }
56         }
57
58         if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
59                 return device_wakeup_enable(&chip->pdev->dev);
60         else if (!cap_cd_wake)
61                 return device_wakeup_disable(&chip->pdev->dev);
62
63         return 0;
64 }
65
66 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
67 {
68         int i, ret;
69
70         sdhci_pci_init_wakeup(chip);
71
72         for (i = 0; i < chip->num_slots; i++) {
73                 struct sdhci_pci_slot *slot = chip->slots[i];
74                 struct sdhci_host *host;
75
76                 if (!slot)
77                         continue;
78
79                 host = slot->host;
80
81                 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
82                         mmc_retune_needed(host->mmc);
83
84                 ret = sdhci_suspend_host(host);
85                 if (ret)
86                         goto err_pci_suspend;
87
88                 if (device_may_wakeup(&chip->pdev->dev))
89                         mmc_gpio_set_cd_wake(host->mmc, true);
90         }
91
92         return 0;
93
94 err_pci_suspend:
95         while (--i >= 0)
96                 sdhci_resume_host(chip->slots[i]->host);
97         return ret;
98 }
99
100 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
101 {
102         struct sdhci_pci_slot *slot;
103         int i, ret;
104
105         for (i = 0; i < chip->num_slots; i++) {
106                 slot = chip->slots[i];
107                 if (!slot)
108                         continue;
109
110                 ret = sdhci_resume_host(slot->host);
111                 if (ret)
112                         return ret;
113
114                 mmc_gpio_set_cd_wake(slot->host->mmc, false);
115         }
116
117         return 0;
118 }
119
120 static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
121 {
122         int ret;
123
124         ret = cqhci_suspend(chip->slots[0]->host->mmc);
125         if (ret)
126                 return ret;
127
128         return sdhci_pci_suspend_host(chip);
129 }
130
131 static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
132 {
133         int ret;
134
135         ret = sdhci_pci_resume_host(chip);
136         if (ret)
137                 return ret;
138
139         return cqhci_resume(chip->slots[0]->host->mmc);
140 }
141 #endif
142
143 #ifdef CONFIG_PM
144 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
145 {
146         struct sdhci_pci_slot *slot;
147         struct sdhci_host *host;
148         int i, ret;
149
150         for (i = 0; i < chip->num_slots; i++) {
151                 slot = chip->slots[i];
152                 if (!slot)
153                         continue;
154
155                 host = slot->host;
156
157                 ret = sdhci_runtime_suspend_host(host);
158                 if (ret)
159                         goto err_pci_runtime_suspend;
160
161                 if (chip->rpm_retune &&
162                     host->tuning_mode != SDHCI_TUNING_MODE_3)
163                         mmc_retune_needed(host->mmc);
164         }
165
166         return 0;
167
168 err_pci_runtime_suspend:
169         while (--i >= 0)
170                 sdhci_runtime_resume_host(chip->slots[i]->host);
171         return ret;
172 }
173
174 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
175 {
176         struct sdhci_pci_slot *slot;
177         int i, ret;
178
179         for (i = 0; i < chip->num_slots; i++) {
180                 slot = chip->slots[i];
181                 if (!slot)
182                         continue;
183
184                 ret = sdhci_runtime_resume_host(slot->host);
185                 if (ret)
186                         return ret;
187         }
188
189         return 0;
190 }
191
192 static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
193 {
194         int ret;
195
196         ret = cqhci_suspend(chip->slots[0]->host->mmc);
197         if (ret)
198                 return ret;
199
200         return sdhci_pci_runtime_suspend_host(chip);
201 }
202
203 static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
204 {
205         int ret;
206
207         ret = sdhci_pci_runtime_resume_host(chip);
208         if (ret)
209                 return ret;
210
211         return cqhci_resume(chip->slots[0]->host->mmc);
212 }
213 #endif
214
215 static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
216 {
217         int cmd_error = 0;
218         int data_error = 0;
219
220         if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
221                 return intmask;
222
223         cqhci_irq(host->mmc, intmask, cmd_error, data_error);
224
225         return 0;
226 }
227
228 static void sdhci_pci_dumpregs(struct mmc_host *mmc)
229 {
230         sdhci_dumpregs(mmc_priv(mmc));
231 }
232
233 /*****************************************************************************\
234  *                                                                           *
235  * Hardware specific quirk handling                                          *
236  *                                                                           *
237 \*****************************************************************************/
238
239 static int ricoh_probe(struct sdhci_pci_chip *chip)
240 {
241         if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
242             chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
243                 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
244         return 0;
245 }
246
247 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
248 {
249         slot->host->caps =
250                 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
251                         & SDHCI_TIMEOUT_CLK_MASK) |
252
253                 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
254                         & SDHCI_CLOCK_BASE_MASK) |
255
256                 SDHCI_TIMEOUT_CLK_UNIT |
257                 SDHCI_CAN_VDD_330 |
258                 SDHCI_CAN_DO_HISPD |
259                 SDHCI_CAN_DO_SDMA;
260         return 0;
261 }
262
263 #ifdef CONFIG_PM_SLEEP
264 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
265 {
266         /* Apply a delay to allow controller to settle */
267         /* Otherwise it becomes confused if card state changed
268                 during suspend */
269         msleep(500);
270         return sdhci_pci_resume_host(chip);
271 }
272 #endif
273
274 static const struct sdhci_pci_fixes sdhci_ricoh = {
275         .probe          = ricoh_probe,
276         .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR |
277                           SDHCI_QUIRK_FORCE_DMA |
278                           SDHCI_QUIRK_CLOCK_BEFORE_RESET,
279 };
280
281 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
282         .probe_slot     = ricoh_mmc_probe_slot,
283 #ifdef CONFIG_PM_SLEEP
284         .resume         = ricoh_mmc_resume,
285 #endif
286         .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR |
287                           SDHCI_QUIRK_CLOCK_BEFORE_RESET |
288                           SDHCI_QUIRK_NO_CARD_NO_RESET |
289                           SDHCI_QUIRK_MISSING_CAPS
290 };
291
292 static const struct sdhci_pci_fixes sdhci_ene_712 = {
293         .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
294                           SDHCI_QUIRK_BROKEN_DMA,
295 };
296
297 static const struct sdhci_pci_fixes sdhci_ene_714 = {
298         .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
299                           SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
300                           SDHCI_QUIRK_BROKEN_DMA,
301 };
302
303 static const struct sdhci_pci_fixes sdhci_cafe = {
304         .quirks         = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
305                           SDHCI_QUIRK_NO_BUSY_IRQ |
306                           SDHCI_QUIRK_BROKEN_CARD_DETECTION |
307                           SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
308 };
309
310 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
311         .quirks         = SDHCI_QUIRK_NO_HISPD_BIT,
312 };
313
314 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
315 {
316         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
317         return 0;
318 }
319
320 /*
321  * ADMA operation is disabled for Moorestown platform due to
322  * hardware bugs.
323  */
324 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
325 {
326         /*
327          * slots number is fixed here for MRST as SDIO3/5 are never used and
328          * have hardware bugs.
329          */
330         chip->num_slots = 1;
331         return 0;
332 }
333
334 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
335 {
336         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
337         return 0;
338 }
339
340 #ifdef CONFIG_PM
341
342 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
343 {
344         struct sdhci_pci_slot *slot = dev_id;
345         struct sdhci_host *host = slot->host;
346
347         mmc_detect_change(host->mmc, msecs_to_jiffies(200));
348         return IRQ_HANDLED;
349 }
350
351 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
352 {
353         int err, irq, gpio = slot->cd_gpio;
354
355         slot->cd_gpio = -EINVAL;
356         slot->cd_irq = -EINVAL;
357
358         if (!gpio_is_valid(gpio))
359                 return;
360
361         err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
362         if (err < 0)
363                 goto out;
364
365         err = gpio_direction_input(gpio);
366         if (err < 0)
367                 goto out_free;
368
369         irq = gpio_to_irq(gpio);
370         if (irq < 0)
371                 goto out_free;
372
373         err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
374                           IRQF_TRIGGER_FALLING, "sd_cd", slot);
375         if (err)
376                 goto out_free;
377
378         slot->cd_gpio = gpio;
379         slot->cd_irq = irq;
380
381         return;
382
383 out_free:
384         devm_gpio_free(&slot->chip->pdev->dev, gpio);
385 out:
386         dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
387 }
388
389 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
390 {
391         if (slot->cd_irq >= 0)
392                 free_irq(slot->cd_irq, slot);
393 }
394
395 #else
396
397 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
398 {
399 }
400
401 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
402 {
403 }
404
405 #endif
406
407 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
408 {
409         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
410         slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
411         return 0;
412 }
413
414 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
415 {
416         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
417         return 0;
418 }
419
420 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
421         .quirks         = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
422         .probe_slot     = mrst_hc_probe_slot,
423 };
424
425 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
426         .quirks         = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
427         .probe          = mrst_hc_probe,
428 };
429
430 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
431         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
432         .allow_runtime_pm = true,
433         .own_cd_for_runtime_pm = true,
434 };
435
436 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
437         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
438         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
439         .allow_runtime_pm = true,
440         .probe_slot     = mfd_sdio_probe_slot,
441 };
442
443 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
444         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
445         .allow_runtime_pm = true,
446         .probe_slot     = mfd_emmc_probe_slot,
447 };
448
449 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
450         .quirks         = SDHCI_QUIRK_BROKEN_ADMA,
451         .probe_slot     = pch_hc_probe_slot,
452 };
453
454 enum {
455         INTEL_DSM_FNS           =  0,
456         INTEL_DSM_V18_SWITCH    =  3,
457         INTEL_DSM_V33_SWITCH    =  4,
458         INTEL_DSM_DRV_STRENGTH  =  9,
459         INTEL_DSM_D3_RETUNE     = 10,
460 };
461
462 struct intel_host {
463         u32     dsm_fns;
464         int     drv_strength;
465         bool    d3_retune;
466         bool    rpm_retune_ok;
467         u32     glk_rx_ctrl1;
468         u32     glk_tun_val;
469 };
470
471 static const guid_t intel_dsm_guid =
472         GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
473                   0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
474
475 static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
476                        unsigned int fn, u32 *result)
477 {
478         union acpi_object *obj;
479         int err = 0;
480         size_t len;
481
482         obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
483         if (!obj)
484                 return -EOPNOTSUPP;
485
486         if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
487                 err = -EINVAL;
488                 goto out;
489         }
490
491         len = min_t(size_t, obj->buffer.length, 4);
492
493         *result = 0;
494         memcpy(result, obj->buffer.pointer, len);
495 out:
496         ACPI_FREE(obj);
497
498         return err;
499 }
500
501 static int intel_dsm(struct intel_host *intel_host, struct device *dev,
502                      unsigned int fn, u32 *result)
503 {
504         if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
505                 return -EOPNOTSUPP;
506
507         return __intel_dsm(intel_host, dev, fn, result);
508 }
509
510 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
511                            struct mmc_host *mmc)
512 {
513         int err;
514         u32 val;
515
516         intel_host->d3_retune = true;
517
518         err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
519         if (err) {
520                 pr_debug("%s: DSM not supported, error %d\n",
521                          mmc_hostname(mmc), err);
522                 return;
523         }
524
525         pr_debug("%s: DSM function mask %#x\n",
526                  mmc_hostname(mmc), intel_host->dsm_fns);
527
528         err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
529         intel_host->drv_strength = err ? 0 : val;
530
531         err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
532         intel_host->d3_retune = err ? true : !!val;
533 }
534
535 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
536 {
537         u8 reg;
538
539         reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
540         reg |= 0x10;
541         sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
542         /* For eMMC, minimum is 1us but give it 9us for good measure */
543         udelay(9);
544         reg &= ~0x10;
545         sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
546         /* For eMMC, minimum is 200us but give it 300us for good measure */
547         usleep_range(300, 1000);
548 }
549
550 static int intel_select_drive_strength(struct mmc_card *card,
551                                        unsigned int max_dtr, int host_drv,
552                                        int card_drv, int *drv_type)
553 {
554         struct sdhci_host *host = mmc_priv(card->host);
555         struct sdhci_pci_slot *slot = sdhci_priv(host);
556         struct intel_host *intel_host = sdhci_pci_priv(slot);
557
558         return intel_host->drv_strength;
559 }
560
561 static int bxt_get_cd(struct mmc_host *mmc)
562 {
563         int gpio_cd = mmc_gpio_get_cd(mmc);
564         struct sdhci_host *host = mmc_priv(mmc);
565         unsigned long flags;
566         int ret = 0;
567
568         if (!gpio_cd)
569                 return 0;
570
571         spin_lock_irqsave(&host->lock, flags);
572
573         if (host->flags & SDHCI_DEVICE_DEAD)
574                 goto out;
575
576         ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
577 out:
578         spin_unlock_irqrestore(&host->lock, flags);
579
580         return ret;
581 }
582
583 #define SDHCI_INTEL_PWR_TIMEOUT_CNT     20
584 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY  100
585
586 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
587                                   unsigned short vdd)
588 {
589         int cntr;
590         u8 reg;
591
592         sdhci_set_power(host, mode, vdd);
593
594         if (mode == MMC_POWER_OFF)
595                 return;
596
597         /*
598          * Bus power might not enable after D3 -> D0 transition due to the
599          * present state not yet having propagated. Retry for up to 2ms.
600          */
601         for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
602                 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
603                 if (reg & SDHCI_POWER_ON)
604                         break;
605                 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
606                 reg |= SDHCI_POWER_ON;
607                 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
608         }
609 }
610
611 #define INTEL_HS400_ES_REG 0x78
612 #define INTEL_HS400_ES_BIT BIT(0)
613
614 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
615                                         struct mmc_ios *ios)
616 {
617         struct sdhci_host *host = mmc_priv(mmc);
618         u32 val;
619
620         val = sdhci_readl(host, INTEL_HS400_ES_REG);
621         if (ios->enhanced_strobe)
622                 val |= INTEL_HS400_ES_BIT;
623         else
624                 val &= ~INTEL_HS400_ES_BIT;
625         sdhci_writel(host, val, INTEL_HS400_ES_REG);
626 }
627
628 static int intel_start_signal_voltage_switch(struct mmc_host *mmc,
629                                              struct mmc_ios *ios)
630 {
631         struct device *dev = mmc_dev(mmc);
632         struct sdhci_host *host = mmc_priv(mmc);
633         struct sdhci_pci_slot *slot = sdhci_priv(host);
634         struct intel_host *intel_host = sdhci_pci_priv(slot);
635         unsigned int fn;
636         u32 result = 0;
637         int err;
638
639         err = sdhci_start_signal_voltage_switch(mmc, ios);
640         if (err)
641                 return err;
642
643         switch (ios->signal_voltage) {
644         case MMC_SIGNAL_VOLTAGE_330:
645                 fn = INTEL_DSM_V33_SWITCH;
646                 break;
647         case MMC_SIGNAL_VOLTAGE_180:
648                 fn = INTEL_DSM_V18_SWITCH;
649                 break;
650         default:
651                 return 0;
652         }
653
654         err = intel_dsm(intel_host, dev, fn, &result);
655         pr_debug("%s: %s DSM fn %u error %d result %u\n",
656                  mmc_hostname(mmc), __func__, fn, err, result);
657
658         return 0;
659 }
660
661 static const struct sdhci_ops sdhci_intel_byt_ops = {
662         .set_clock              = sdhci_set_clock,
663         .set_power              = sdhci_intel_set_power,
664         .enable_dma             = sdhci_pci_enable_dma,
665         .set_bus_width          = sdhci_set_bus_width,
666         .reset                  = sdhci_reset,
667         .set_uhs_signaling      = sdhci_set_uhs_signaling,
668         .hw_reset               = sdhci_pci_hw_reset,
669 };
670
671 static const struct sdhci_ops sdhci_intel_glk_ops = {
672         .set_clock              = sdhci_set_clock,
673         .set_power              = sdhci_intel_set_power,
674         .enable_dma             = sdhci_pci_enable_dma,
675         .set_bus_width          = sdhci_set_bus_width,
676         .reset                  = sdhci_reset,
677         .set_uhs_signaling      = sdhci_set_uhs_signaling,
678         .hw_reset               = sdhci_pci_hw_reset,
679         .irq                    = sdhci_cqhci_irq,
680 };
681
682 static void byt_read_dsm(struct sdhci_pci_slot *slot)
683 {
684         struct intel_host *intel_host = sdhci_pci_priv(slot);
685         struct device *dev = &slot->chip->pdev->dev;
686         struct mmc_host *mmc = slot->host->mmc;
687
688         intel_dsm_init(intel_host, dev, mmc);
689         slot->chip->rpm_retune = intel_host->d3_retune;
690 }
691
692 static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
693 {
694         int err = sdhci_execute_tuning(mmc, opcode);
695         struct sdhci_host *host = mmc_priv(mmc);
696
697         if (err)
698                 return err;
699
700         /*
701          * Tuning can leave the IP in an active state (Buffer Read Enable bit
702          * set) which prevents the entry to low power states (i.e. S0i3). Data
703          * reset will clear it.
704          */
705         sdhci_reset(host, SDHCI_RESET_DATA);
706
707         return 0;
708 }
709
710 static void byt_probe_slot(struct sdhci_pci_slot *slot)
711 {
712         struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
713
714         byt_read_dsm(slot);
715
716         ops->execute_tuning = intel_execute_tuning;
717         ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
718 }
719
720 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
721 {
722         byt_probe_slot(slot);
723         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
724                                  MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
725                                  MMC_CAP_CMD_DURING_TFR |
726                                  MMC_CAP_WAIT_WHILE_BUSY;
727         slot->hw_reset = sdhci_pci_int_hw_reset;
728         if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
729                 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
730         slot->host->mmc_host_ops.select_drive_strength =
731                                                 intel_select_drive_strength;
732         return 0;
733 }
734
735 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
736 {
737         int ret = byt_emmc_probe_slot(slot);
738
739         slot->host->mmc->caps2 |= MMC_CAP2_CQE;
740
741         if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
742                 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
743                 slot->host->mmc_host_ops.hs400_enhanced_strobe =
744                                                 intel_hs400_enhanced_strobe;
745                 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
746         }
747
748         return ret;
749 }
750
751 static const struct cqhci_host_ops glk_cqhci_ops = {
752         .enable         = sdhci_cqe_enable,
753         .disable        = sdhci_cqe_disable,
754         .dumpregs       = sdhci_pci_dumpregs,
755 };
756
757 static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
758 {
759         struct device *dev = &slot->chip->pdev->dev;
760         struct sdhci_host *host = slot->host;
761         struct cqhci_host *cq_host;
762         bool dma64;
763         int ret;
764
765         ret = sdhci_setup_host(host);
766         if (ret)
767                 return ret;
768
769         cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
770         if (!cq_host) {
771                 ret = -ENOMEM;
772                 goto cleanup;
773         }
774
775         cq_host->mmio = host->ioaddr + 0x200;
776         cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
777         cq_host->ops = &glk_cqhci_ops;
778
779         dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
780         if (dma64)
781                 cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
782
783         ret = cqhci_init(cq_host, host->mmc, dma64);
784         if (ret)
785                 goto cleanup;
786
787         ret = __sdhci_add_host(host);
788         if (ret)
789                 goto cleanup;
790
791         return 0;
792
793 cleanup:
794         sdhci_cleanup_host(host);
795         return ret;
796 }
797
798 #ifdef CONFIG_PM
799 #define GLK_RX_CTRL1    0x834
800 #define GLK_TUN_VAL     0x840
801 #define GLK_PATH_PLL    GENMASK(13, 8)
802 #define GLK_DLY         GENMASK(6, 0)
803 /* Workaround firmware failing to restore the tuning value */
804 static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp)
805 {
806         struct sdhci_pci_slot *slot = chip->slots[0];
807         struct intel_host *intel_host = sdhci_pci_priv(slot);
808         struct sdhci_host *host = slot->host;
809         u32 glk_rx_ctrl1;
810         u32 glk_tun_val;
811         u32 dly;
812
813         if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc))
814                 return;
815
816         glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1);
817         glk_tun_val = sdhci_readl(host, GLK_TUN_VAL);
818
819         if (susp) {
820                 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1;
821                 intel_host->glk_tun_val = glk_tun_val;
822                 return;
823         }
824
825         if (!intel_host->glk_tun_val)
826                 return;
827
828         if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) {
829                 intel_host->rpm_retune_ok = true;
830                 return;
831         }
832
833         dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) +
834                                   (intel_host->glk_tun_val << 1));
835         if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1))
836                 return;
837
838         glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly;
839         sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1);
840
841         intel_host->rpm_retune_ok = true;
842         chip->rpm_retune = true;
843         mmc_retune_needed(host->mmc);
844         pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc));
845 }
846
847 static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp)
848 {
849         if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
850             !chip->rpm_retune)
851                 glk_rpm_retune_wa(chip, susp);
852 }
853
854 static int glk_runtime_suspend(struct sdhci_pci_chip *chip)
855 {
856         glk_rpm_retune_chk(chip, true);
857
858         return sdhci_cqhci_runtime_suspend(chip);
859 }
860
861 static int glk_runtime_resume(struct sdhci_pci_chip *chip)
862 {
863         glk_rpm_retune_chk(chip, false);
864
865         return sdhci_cqhci_runtime_resume(chip);
866 }
867 #endif
868
869 #ifdef CONFIG_ACPI
870 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
871 {
872         acpi_status status;
873         unsigned long long max_freq;
874
875         status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
876                                        "MXFQ", NULL, &max_freq);
877         if (ACPI_FAILURE(status)) {
878                 dev_err(&slot->chip->pdev->dev,
879                         "MXFQ not found in acpi table\n");
880                 return -EINVAL;
881         }
882
883         slot->host->mmc->f_max = max_freq * 1000000;
884
885         return 0;
886 }
887 #else
888 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
889 {
890         return 0;
891 }
892 #endif
893
894 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
895 {
896         int err;
897
898         byt_probe_slot(slot);
899
900         err = ni_set_max_freq(slot);
901         if (err)
902                 return err;
903
904         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
905                                  MMC_CAP_WAIT_WHILE_BUSY;
906         return 0;
907 }
908
909 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
910 {
911         byt_probe_slot(slot);
912         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
913                                  MMC_CAP_WAIT_WHILE_BUSY;
914         return 0;
915 }
916
917 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
918 {
919         byt_probe_slot(slot);
920         slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
921                                  MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
922         slot->cd_idx = 0;
923         slot->cd_override_level = true;
924         if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
925             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
926             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
927             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
928                 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
929
930         if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI &&
931             slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3)
932                 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V;
933
934         return 0;
935 }
936
937 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
938         .allow_runtime_pm = true,
939         .probe_slot     = byt_emmc_probe_slot,
940         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
941         .quirks2        = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
942                           SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
943                           SDHCI_QUIRK2_STOP_WITH_TC,
944         .ops            = &sdhci_intel_byt_ops,
945         .priv_size      = sizeof(struct intel_host),
946 };
947
948 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
949         .allow_runtime_pm       = true,
950         .probe_slot             = glk_emmc_probe_slot,
951         .add_host               = glk_emmc_add_host,
952 #ifdef CONFIG_PM_SLEEP
953         .suspend                = sdhci_cqhci_suspend,
954         .resume                 = sdhci_cqhci_resume,
955 #endif
956 #ifdef CONFIG_PM
957         .runtime_suspend        = glk_runtime_suspend,
958         .runtime_resume         = glk_runtime_resume,
959 #endif
960         .quirks                 = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
961         .quirks2                = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
962                                   SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
963                                   SDHCI_QUIRK2_STOP_WITH_TC,
964         .ops                    = &sdhci_intel_glk_ops,
965         .priv_size              = sizeof(struct intel_host),
966 };
967
968 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
969         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
970         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
971                           SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
972         .allow_runtime_pm = true,
973         .probe_slot     = ni_byt_sdio_probe_slot,
974         .ops            = &sdhci_intel_byt_ops,
975         .priv_size      = sizeof(struct intel_host),
976 };
977
978 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
979         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
980         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
981                         SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
982         .allow_runtime_pm = true,
983         .probe_slot     = byt_sdio_probe_slot,
984         .ops            = &sdhci_intel_byt_ops,
985         .priv_size      = sizeof(struct intel_host),
986 };
987
988 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
989         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
990         .quirks2        = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
991                           SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
992                           SDHCI_QUIRK2_STOP_WITH_TC,
993         .allow_runtime_pm = true,
994         .own_cd_for_runtime_pm = true,
995         .probe_slot     = byt_sd_probe_slot,
996         .ops            = &sdhci_intel_byt_ops,
997         .priv_size      = sizeof(struct intel_host),
998 };
999
1000 /* Define Host controllers for Intel Merrifield platform */
1001 #define INTEL_MRFLD_EMMC_0      0
1002 #define INTEL_MRFLD_EMMC_1      1
1003 #define INTEL_MRFLD_SD          2
1004 #define INTEL_MRFLD_SDIO        3
1005
1006 #ifdef CONFIG_ACPI
1007 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
1008 {
1009         struct acpi_device *device, *child;
1010
1011         device = ACPI_COMPANION(&slot->chip->pdev->dev);
1012         if (!device)
1013                 return;
1014
1015         acpi_device_fix_up_power(device);
1016         list_for_each_entry(child, &device->children, node)
1017                 if (child->status.present && child->status.enabled)
1018                         acpi_device_fix_up_power(child);
1019 }
1020 #else
1021 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
1022 #endif
1023
1024 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
1025 {
1026         unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
1027
1028         switch (func) {
1029         case INTEL_MRFLD_EMMC_0:
1030         case INTEL_MRFLD_EMMC_1:
1031                 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1032                                          MMC_CAP_8_BIT_DATA |
1033                                          MMC_CAP_1_8V_DDR;
1034                 break;
1035         case INTEL_MRFLD_SD:
1036                 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
1037                 break;
1038         case INTEL_MRFLD_SDIO:
1039                 /* Advertise 2.0v for compatibility with the SDIO card's OCR */
1040                 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195;
1041                 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1042                                          MMC_CAP_POWER_OFF_CARD;
1043                 break;
1044         default:
1045                 return -ENODEV;
1046         }
1047
1048         intel_mrfld_mmc_fix_up_power_slot(slot);
1049         return 0;
1050 }
1051
1052 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
1053         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1054         .quirks2        = SDHCI_QUIRK2_BROKEN_HS200 |
1055                         SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1056         .allow_runtime_pm = true,
1057         .probe_slot     = intel_mrfld_mmc_probe_slot,
1058 };
1059
1060 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
1061 {
1062         u8 scratch;
1063         int ret;
1064
1065         ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
1066         if (ret)
1067                 return ret;
1068
1069         /*
1070          * Turn PMOS on [bit 0], set over current detection to 2.4 V
1071          * [bit 1:2] and enable over current debouncing [bit 6].
1072          */
1073         if (on)
1074                 scratch |= 0x47;
1075         else
1076                 scratch &= ~0x47;
1077
1078         return pci_write_config_byte(chip->pdev, 0xAE, scratch);
1079 }
1080
1081 static int jmicron_probe(struct sdhci_pci_chip *chip)
1082 {
1083         int ret;
1084         u16 mmcdev = 0;
1085
1086         if (chip->pdev->revision == 0) {
1087                 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
1088                           SDHCI_QUIRK_32BIT_DMA_SIZE |
1089                           SDHCI_QUIRK_32BIT_ADMA_SIZE |
1090                           SDHCI_QUIRK_RESET_AFTER_REQUEST |
1091                           SDHCI_QUIRK_BROKEN_SMALL_PIO;
1092         }
1093
1094         /*
1095          * JMicron chips can have two interfaces to the same hardware
1096          * in order to work around limitations in Microsoft's driver.
1097          * We need to make sure we only bind to one of them.
1098          *
1099          * This code assumes two things:
1100          *
1101          * 1. The PCI code adds subfunctions in order.
1102          *
1103          * 2. The MMC interface has a lower subfunction number
1104          *    than the SD interface.
1105          */
1106         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
1107                 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
1108         else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
1109                 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
1110
1111         if (mmcdev) {
1112                 struct pci_dev *sd_dev;
1113
1114                 sd_dev = NULL;
1115                 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
1116                                                 mmcdev, sd_dev)) != NULL) {
1117                         if ((PCI_SLOT(chip->pdev->devfn) ==
1118                                 PCI_SLOT(sd_dev->devfn)) &&
1119                                 (chip->pdev->bus == sd_dev->bus))
1120                                 break;
1121                 }
1122
1123                 if (sd_dev) {
1124                         pci_dev_put(sd_dev);
1125                         dev_info(&chip->pdev->dev, "Refusing to bind to "
1126                                 "secondary interface.\n");
1127                         return -ENODEV;
1128                 }
1129         }
1130
1131         /*
1132          * JMicron chips need a bit of a nudge to enable the power
1133          * output pins.
1134          */
1135         ret = jmicron_pmos(chip, 1);
1136         if (ret) {
1137                 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1138                 return ret;
1139         }
1140
1141         /* quirk for unsable RO-detection on JM388 chips */
1142         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
1143             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1144                 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
1145
1146         return 0;
1147 }
1148
1149 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
1150 {
1151         u8 scratch;
1152
1153         scratch = readb(host->ioaddr + 0xC0);
1154
1155         if (on)
1156                 scratch |= 0x01;
1157         else
1158                 scratch &= ~0x01;
1159
1160         writeb(scratch, host->ioaddr + 0xC0);
1161 }
1162
1163 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
1164 {
1165         if (slot->chip->pdev->revision == 0) {
1166                 u16 version;
1167
1168                 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
1169                 version = (version & SDHCI_VENDOR_VER_MASK) >>
1170                         SDHCI_VENDOR_VER_SHIFT;
1171
1172                 /*
1173                  * Older versions of the chip have lots of nasty glitches
1174                  * in the ADMA engine. It's best just to avoid it
1175                  * completely.
1176                  */
1177                 if (version < 0xAC)
1178                         slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
1179         }
1180
1181         /* JM388 MMC doesn't support 1.8V while SD supports it */
1182         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1183                 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
1184                         MMC_VDD_29_30 | MMC_VDD_30_31 |
1185                         MMC_VDD_165_195; /* allow 1.8V */
1186                 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
1187                         MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
1188         }
1189
1190         /*
1191          * The secondary interface requires a bit set to get the
1192          * interrupts.
1193          */
1194         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1195             slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1196                 jmicron_enable_mmc(slot->host, 1);
1197
1198         slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
1199
1200         return 0;
1201 }
1202
1203 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
1204 {
1205         if (dead)
1206                 return;
1207
1208         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1209             slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1210                 jmicron_enable_mmc(slot->host, 0);
1211 }
1212
1213 #ifdef CONFIG_PM_SLEEP
1214 static int jmicron_suspend(struct sdhci_pci_chip *chip)
1215 {
1216         int i, ret;
1217
1218         ret = sdhci_pci_suspend_host(chip);
1219         if (ret)
1220                 return ret;
1221
1222         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1223             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1224                 for (i = 0; i < chip->num_slots; i++)
1225                         jmicron_enable_mmc(chip->slots[i]->host, 0);
1226         }
1227
1228         return 0;
1229 }
1230
1231 static int jmicron_resume(struct sdhci_pci_chip *chip)
1232 {
1233         int ret, i;
1234
1235         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1236             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1237                 for (i = 0; i < chip->num_slots; i++)
1238                         jmicron_enable_mmc(chip->slots[i]->host, 1);
1239         }
1240
1241         ret = jmicron_pmos(chip, 1);
1242         if (ret) {
1243                 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1244                 return ret;
1245         }
1246
1247         return sdhci_pci_resume_host(chip);
1248 }
1249 #endif
1250
1251 static const struct sdhci_pci_fixes sdhci_o2 = {
1252         .probe = sdhci_pci_o2_probe,
1253         .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1254         .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
1255         .probe_slot = sdhci_pci_o2_probe_slot,
1256 #ifdef CONFIG_PM_SLEEP
1257         .resume = sdhci_pci_o2_resume,
1258 #endif
1259 };
1260
1261 static const struct sdhci_pci_fixes sdhci_jmicron = {
1262         .probe          = jmicron_probe,
1263
1264         .probe_slot     = jmicron_probe_slot,
1265         .remove_slot    = jmicron_remove_slot,
1266
1267 #ifdef CONFIG_PM_SLEEP
1268         .suspend        = jmicron_suspend,
1269         .resume         = jmicron_resume,
1270 #endif
1271 };
1272
1273 /* SysKonnect CardBus2SDIO extra registers */
1274 #define SYSKT_CTRL              0x200
1275 #define SYSKT_RDFIFO_STAT       0x204
1276 #define SYSKT_WRFIFO_STAT       0x208
1277 #define SYSKT_POWER_DATA        0x20c
1278 #define   SYSKT_POWER_330       0xef
1279 #define   SYSKT_POWER_300       0xf8
1280 #define   SYSKT_POWER_184       0xcc
1281 #define SYSKT_POWER_CMD         0x20d
1282 #define   SYSKT_POWER_START     (1 << 7)
1283 #define SYSKT_POWER_STATUS      0x20e
1284 #define   SYSKT_POWER_STATUS_OK (1 << 0)
1285 #define SYSKT_BOARD_REV         0x210
1286 #define SYSKT_CHIP_REV          0x211
1287 #define SYSKT_CONF_DATA         0x212
1288 #define   SYSKT_CONF_DATA_1V8   (1 << 2)
1289 #define   SYSKT_CONF_DATA_2V5   (1 << 1)
1290 #define   SYSKT_CONF_DATA_3V3   (1 << 0)
1291
1292 static int syskt_probe(struct sdhci_pci_chip *chip)
1293 {
1294         if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1295                 chip->pdev->class &= ~0x0000FF;
1296                 chip->pdev->class |= PCI_SDHCI_IFDMA;
1297         }
1298         return 0;
1299 }
1300
1301 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1302 {
1303         int tm, ps;
1304
1305         u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1306         u8  chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1307         dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1308                                          "board rev %d.%d, chip rev %d.%d\n",
1309                                          board_rev >> 4, board_rev & 0xf,
1310                                          chip_rev >> 4,  chip_rev & 0xf);
1311         if (chip_rev >= 0x20)
1312                 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1313
1314         writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1315         writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1316         udelay(50);
1317         tm = 10;  /* Wait max 1 ms */
1318         do {
1319                 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1320                 if (ps & SYSKT_POWER_STATUS_OK)
1321                         break;
1322                 udelay(100);
1323         } while (--tm);
1324         if (!tm) {
1325                 dev_err(&slot->chip->pdev->dev,
1326                         "power regulator never stabilized");
1327                 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1328                 return -ENODEV;
1329         }
1330
1331         return 0;
1332 }
1333
1334 static const struct sdhci_pci_fixes sdhci_syskt = {
1335         .quirks         = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1336         .probe          = syskt_probe,
1337         .probe_slot     = syskt_probe_slot,
1338 };
1339
1340 static int via_probe(struct sdhci_pci_chip *chip)
1341 {
1342         if (chip->pdev->revision == 0x10)
1343                 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1344
1345         return 0;
1346 }
1347
1348 static const struct sdhci_pci_fixes sdhci_via = {
1349         .probe          = via_probe,
1350 };
1351
1352 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1353 {
1354         slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1355         return 0;
1356 }
1357
1358 static const struct sdhci_pci_fixes sdhci_rtsx = {
1359         .quirks2        = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1360                         SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1361                         SDHCI_QUIRK2_BROKEN_DDR50,
1362         .probe_slot     = rtsx_probe_slot,
1363 };
1364
1365 /*AMD chipset generation*/
1366 enum amd_chipset_gen {
1367         AMD_CHIPSET_BEFORE_ML,
1368         AMD_CHIPSET_CZ,
1369         AMD_CHIPSET_NL,
1370         AMD_CHIPSET_UNKNOWN,
1371 };
1372
1373 /* AMD registers */
1374 #define AMD_SD_AUTO_PATTERN             0xB8
1375 #define AMD_MSLEEP_DURATION             4
1376 #define AMD_SD_MISC_CONTROL             0xD0
1377 #define AMD_MAX_TUNE_VALUE              0x0B
1378 #define AMD_AUTO_TUNE_SEL               0x10800
1379 #define AMD_FIFO_PTR                    0x30
1380 #define AMD_BIT_MASK                    0x1F
1381
1382 static void amd_tuning_reset(struct sdhci_host *host)
1383 {
1384         unsigned int val;
1385
1386         val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1387         val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1388         sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1389
1390         val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1391         val &= ~SDHCI_CTRL_EXEC_TUNING;
1392         sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1393 }
1394
1395 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1396 {
1397         unsigned int val;
1398
1399         pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1400         val &= ~AMD_BIT_MASK;
1401         val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1402         pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1403 }
1404
1405 static void amd_enable_manual_tuning(struct pci_dev *pdev)
1406 {
1407         unsigned int val;
1408
1409         pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1410         val |= AMD_FIFO_PTR;
1411         pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1412 }
1413
1414 static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode)
1415 {
1416         struct sdhci_pci_slot *slot = sdhci_priv(host);
1417         struct pci_dev *pdev = slot->chip->pdev;
1418         u8 valid_win = 0;
1419         u8 valid_win_max = 0;
1420         u8 valid_win_end = 0;
1421         u8 ctrl, tune_around;
1422
1423         amd_tuning_reset(host);
1424
1425         for (tune_around = 0; tune_around < 12; tune_around++) {
1426                 amd_config_tuning_phase(pdev, tune_around);
1427
1428                 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1429                         valid_win = 0;
1430                         msleep(AMD_MSLEEP_DURATION);
1431                         ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1432                         sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1433                 } else if (++valid_win > valid_win_max) {
1434                         valid_win_max = valid_win;
1435                         valid_win_end = tune_around;
1436                 }
1437         }
1438
1439         if (!valid_win_max) {
1440                 dev_err(&pdev->dev, "no tuning point found\n");
1441                 return -EIO;
1442         }
1443
1444         amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1445
1446         amd_enable_manual_tuning(pdev);
1447
1448         host->mmc->retune_period = 0;
1449
1450         return 0;
1451 }
1452
1453 static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode)
1454 {
1455         struct sdhci_host *host = mmc_priv(mmc);
1456
1457         /* AMD requires custom HS200 tuning */
1458         if (host->timing == MMC_TIMING_MMC_HS200)
1459                 return amd_execute_tuning_hs200(host, opcode);
1460
1461         /* Otherwise perform standard SDHCI tuning */
1462         return sdhci_execute_tuning(mmc, opcode);
1463 }
1464
1465 static int amd_probe_slot(struct sdhci_pci_slot *slot)
1466 {
1467         struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
1468
1469         ops->execute_tuning = amd_execute_tuning;
1470
1471         return 0;
1472 }
1473
1474 static int amd_probe(struct sdhci_pci_chip *chip)
1475 {
1476         struct pci_dev  *smbus_dev;
1477         enum amd_chipset_gen gen;
1478
1479         smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1480                         PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1481         if (smbus_dev) {
1482                 gen = AMD_CHIPSET_BEFORE_ML;
1483         } else {
1484                 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1485                                 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1486                 if (smbus_dev) {
1487                         if (smbus_dev->revision < 0x51)
1488                                 gen = AMD_CHIPSET_CZ;
1489                         else
1490                                 gen = AMD_CHIPSET_NL;
1491                 } else {
1492                         gen = AMD_CHIPSET_UNKNOWN;
1493                 }
1494         }
1495
1496         if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1497                 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1498
1499         return 0;
1500 }
1501
1502 static const struct sdhci_ops amd_sdhci_pci_ops = {
1503         .set_clock                      = sdhci_set_clock,
1504         .enable_dma                     = sdhci_pci_enable_dma,
1505         .set_bus_width                  = sdhci_set_bus_width,
1506         .reset                          = sdhci_reset,
1507         .set_uhs_signaling              = sdhci_set_uhs_signaling,
1508 };
1509
1510 static const struct sdhci_pci_fixes sdhci_amd = {
1511         .probe          = amd_probe,
1512         .ops            = &amd_sdhci_pci_ops,
1513         .probe_slot     = amd_probe_slot,
1514 };
1515
1516 static const struct pci_device_id pci_ids[] = {
1517         SDHCI_PCI_DEVICE(RICOH, R5C822,  ricoh),
1518         SDHCI_PCI_DEVICE(RICOH, R5C843,  ricoh_mmc),
1519         SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1520         SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1521         SDHCI_PCI_DEVICE(ENE, CB712_SD,   ene_712),
1522         SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1523         SDHCI_PCI_DEVICE(ENE, CB714_SD,   ene_714),
1524         SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1525         SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1526         SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD,  jmicron),
1527         SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1528         SDHCI_PCI_DEVICE(JMICRON, JMB388_SD,  jmicron),
1529         SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1530         SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1531         SDHCI_PCI_DEVICE(VIA, 95D0, via),
1532         SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1533         SDHCI_PCI_DEVICE(INTEL, QRK_SD,    intel_qrk),
1534         SDHCI_PCI_DEVICE(INTEL, MRST_SD0,  intel_mrst_hc0),
1535         SDHCI_PCI_DEVICE(INTEL, MRST_SD1,  intel_mrst_hc1_hc2),
1536         SDHCI_PCI_DEVICE(INTEL, MRST_SD2,  intel_mrst_hc1_hc2),
1537         SDHCI_PCI_DEVICE(INTEL, MFD_SD,    intel_mfd_sd),
1538         SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1539         SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1540         SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1541         SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1542         SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1543         SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1544         SDHCI_PCI_DEVICE(INTEL, BYT_EMMC,  intel_byt_emmc),
1545         SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1546         SDHCI_PCI_DEVICE(INTEL, BYT_SDIO,  intel_byt_sdio),
1547         SDHCI_PCI_DEVICE(INTEL, BYT_SD,    intel_byt_sd),
1548         SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1549         SDHCI_PCI_DEVICE(INTEL, BSW_EMMC,  intel_byt_emmc),
1550         SDHCI_PCI_DEVICE(INTEL, BSW_SDIO,  intel_byt_sdio),
1551         SDHCI_PCI_DEVICE(INTEL, BSW_SD,    intel_byt_sd),
1552         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1553         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1554         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1555         SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1556         SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1557         SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1558         SDHCI_PCI_DEVICE(INTEL, SPT_EMMC,  intel_byt_emmc),
1559         SDHCI_PCI_DEVICE(INTEL, SPT_SDIO,  intel_byt_sdio),
1560         SDHCI_PCI_DEVICE(INTEL, SPT_SD,    intel_byt_sd),
1561         SDHCI_PCI_DEVICE(INTEL, DNV_EMMC,  intel_byt_emmc),
1562         SDHCI_PCI_DEVICE(INTEL, CDF_EMMC,  intel_glk_emmc),
1563         SDHCI_PCI_DEVICE(INTEL, BXT_EMMC,  intel_byt_emmc),
1564         SDHCI_PCI_DEVICE(INTEL, BXT_SDIO,  intel_byt_sdio),
1565         SDHCI_PCI_DEVICE(INTEL, BXT_SD,    intel_byt_sd),
1566         SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1567         SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1568         SDHCI_PCI_DEVICE(INTEL, BXTM_SD,   intel_byt_sd),
1569         SDHCI_PCI_DEVICE(INTEL, APL_EMMC,  intel_byt_emmc),
1570         SDHCI_PCI_DEVICE(INTEL, APL_SDIO,  intel_byt_sdio),
1571         SDHCI_PCI_DEVICE(INTEL, APL_SD,    intel_byt_sd),
1572         SDHCI_PCI_DEVICE(INTEL, GLK_EMMC,  intel_glk_emmc),
1573         SDHCI_PCI_DEVICE(INTEL, GLK_SDIO,  intel_byt_sdio),
1574         SDHCI_PCI_DEVICE(INTEL, GLK_SD,    intel_byt_sd),
1575         SDHCI_PCI_DEVICE(INTEL, CNP_EMMC,  intel_glk_emmc),
1576         SDHCI_PCI_DEVICE(INTEL, CNP_SD,    intel_byt_sd),
1577         SDHCI_PCI_DEVICE(INTEL, CNPH_SD,   intel_byt_sd),
1578         SDHCI_PCI_DEVICE(INTEL, ICP_EMMC,  intel_glk_emmc),
1579         SDHCI_PCI_DEVICE(INTEL, ICP_SD,    intel_byt_sd),
1580         SDHCI_PCI_DEVICE(O2, 8120,     o2),
1581         SDHCI_PCI_DEVICE(O2, 8220,     o2),
1582         SDHCI_PCI_DEVICE(O2, 8221,     o2),
1583         SDHCI_PCI_DEVICE(O2, 8320,     o2),
1584         SDHCI_PCI_DEVICE(O2, 8321,     o2),
1585         SDHCI_PCI_DEVICE(O2, FUJIN2,   o2),
1586         SDHCI_PCI_DEVICE(O2, SDS0,     o2),
1587         SDHCI_PCI_DEVICE(O2, SDS1,     o2),
1588         SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1589         SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1590         SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan),
1591         SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
1592         SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1593         /* Generic SD host controller */
1594         {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1595         { /* end: all zeroes */ },
1596 };
1597
1598 MODULE_DEVICE_TABLE(pci, pci_ids);
1599
1600 /*****************************************************************************\
1601  *                                                                           *
1602  * SDHCI core callbacks                                                      *
1603  *                                                                           *
1604 \*****************************************************************************/
1605
1606 int sdhci_pci_enable_dma(struct sdhci_host *host)
1607 {
1608         struct sdhci_pci_slot *slot;
1609         struct pci_dev *pdev;
1610
1611         slot = sdhci_priv(host);
1612         pdev = slot->chip->pdev;
1613
1614         if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1615                 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1616                 (host->flags & SDHCI_USE_SDMA)) {
1617                 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1618                         "doesn't fully claim to support it.\n");
1619         }
1620
1621         pci_set_master(pdev);
1622
1623         return 0;
1624 }
1625
1626 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1627 {
1628         struct sdhci_pci_slot *slot = sdhci_priv(host);
1629         int rst_n_gpio = slot->rst_n_gpio;
1630
1631         if (!gpio_is_valid(rst_n_gpio))
1632                 return;
1633         gpio_set_value_cansleep(rst_n_gpio, 0);
1634         /* For eMMC, minimum is 1us but give it 10us for good measure */
1635         udelay(10);
1636         gpio_set_value_cansleep(rst_n_gpio, 1);
1637         /* For eMMC, minimum is 200us but give it 300us for good measure */
1638         usleep_range(300, 1000);
1639 }
1640
1641 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1642 {
1643         struct sdhci_pci_slot *slot = sdhci_priv(host);
1644
1645         if (slot->hw_reset)
1646                 slot->hw_reset(host);
1647 }
1648
1649 static const struct sdhci_ops sdhci_pci_ops = {
1650         .set_clock      = sdhci_set_clock,
1651         .enable_dma     = sdhci_pci_enable_dma,
1652         .set_bus_width  = sdhci_set_bus_width,
1653         .reset          = sdhci_reset,
1654         .set_uhs_signaling = sdhci_set_uhs_signaling,
1655         .hw_reset               = sdhci_pci_hw_reset,
1656 };
1657
1658 /*****************************************************************************\
1659  *                                                                           *
1660  * Suspend/resume                                                            *
1661  *                                                                           *
1662 \*****************************************************************************/
1663
1664 #ifdef CONFIG_PM_SLEEP
1665 static int sdhci_pci_suspend(struct device *dev)
1666 {
1667         struct pci_dev *pdev = to_pci_dev(dev);
1668         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1669
1670         if (!chip)
1671                 return 0;
1672
1673         if (chip->fixes && chip->fixes->suspend)
1674                 return chip->fixes->suspend(chip);
1675
1676         return sdhci_pci_suspend_host(chip);
1677 }
1678
1679 static int sdhci_pci_resume(struct device *dev)
1680 {
1681         struct pci_dev *pdev = to_pci_dev(dev);
1682         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1683
1684         if (!chip)
1685                 return 0;
1686
1687         if (chip->fixes && chip->fixes->resume)
1688                 return chip->fixes->resume(chip);
1689
1690         return sdhci_pci_resume_host(chip);
1691 }
1692 #endif
1693
1694 #ifdef CONFIG_PM
1695 static int sdhci_pci_runtime_suspend(struct device *dev)
1696 {
1697         struct pci_dev *pdev = to_pci_dev(dev);
1698         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1699
1700         if (!chip)
1701                 return 0;
1702
1703         if (chip->fixes && chip->fixes->runtime_suspend)
1704                 return chip->fixes->runtime_suspend(chip);
1705
1706         return sdhci_pci_runtime_suspend_host(chip);
1707 }
1708
1709 static int sdhci_pci_runtime_resume(struct device *dev)
1710 {
1711         struct pci_dev *pdev = to_pci_dev(dev);
1712         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1713
1714         if (!chip)
1715                 return 0;
1716
1717         if (chip->fixes && chip->fixes->runtime_resume)
1718                 return chip->fixes->runtime_resume(chip);
1719
1720         return sdhci_pci_runtime_resume_host(chip);
1721 }
1722 #endif
1723
1724 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1725         SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1726         SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1727                         sdhci_pci_runtime_resume, NULL)
1728 };
1729
1730 /*****************************************************************************\
1731  *                                                                           *
1732  * Device probing/removal                                                    *
1733  *                                                                           *
1734 \*****************************************************************************/
1735
1736 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1737         struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1738         int slotno)
1739 {
1740         struct sdhci_pci_slot *slot;
1741         struct sdhci_host *host;
1742         int ret, bar = first_bar + slotno;
1743         size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
1744
1745         if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1746                 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1747                 return ERR_PTR(-ENODEV);
1748         }
1749
1750         if (pci_resource_len(pdev, bar) < 0x100) {
1751                 dev_err(&pdev->dev, "Invalid iomem size. You may "
1752                         "experience problems.\n");
1753         }
1754
1755         if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1756                 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1757                 return ERR_PTR(-ENODEV);
1758         }
1759
1760         if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1761                 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1762                 return ERR_PTR(-ENODEV);
1763         }
1764
1765         host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
1766         if (IS_ERR(host)) {
1767                 dev_err(&pdev->dev, "cannot allocate host\n");
1768                 return ERR_CAST(host);
1769         }
1770
1771         slot = sdhci_priv(host);
1772
1773         slot->chip = chip;
1774         slot->host = host;
1775         slot->rst_n_gpio = -EINVAL;
1776         slot->cd_gpio = -EINVAL;
1777         slot->cd_idx = -1;
1778
1779         /* Retrieve platform data if there is any */
1780         if (*sdhci_pci_get_data)
1781                 slot->data = sdhci_pci_get_data(pdev, slotno);
1782
1783         if (slot->data) {
1784                 if (slot->data->setup) {
1785                         ret = slot->data->setup(slot->data);
1786                         if (ret) {
1787                                 dev_err(&pdev->dev, "platform setup failed\n");
1788                                 goto free;
1789                         }
1790                 }
1791                 slot->rst_n_gpio = slot->data->rst_n_gpio;
1792                 slot->cd_gpio = slot->data->cd_gpio;
1793         }
1794
1795         host->hw_name = "PCI";
1796         host->ops = chip->fixes && chip->fixes->ops ?
1797                     chip->fixes->ops :
1798                     &sdhci_pci_ops;
1799         host->quirks = chip->quirks;
1800         host->quirks2 = chip->quirks2;
1801
1802         host->irq = pdev->irq;
1803
1804         ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1805         if (ret) {
1806                 dev_err(&pdev->dev, "cannot request region\n");
1807                 goto cleanup;
1808         }
1809
1810         host->ioaddr = pcim_iomap_table(pdev)[bar];
1811
1812         if (chip->fixes && chip->fixes->probe_slot) {
1813                 ret = chip->fixes->probe_slot(slot);
1814                 if (ret)
1815                         goto cleanup;
1816         }
1817
1818         if (gpio_is_valid(slot->rst_n_gpio)) {
1819                 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1820                         gpio_direction_output(slot->rst_n_gpio, 1);
1821                         slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1822                         slot->hw_reset = sdhci_pci_gpio_hw_reset;
1823                 } else {
1824                         dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1825                         slot->rst_n_gpio = -EINVAL;
1826                 }
1827         }
1828
1829         host->mmc->pm_caps = MMC_PM_KEEP_POWER;
1830         host->mmc->slotno = slotno;
1831         host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1832
1833         if (device_can_wakeup(&pdev->dev))
1834                 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
1835
1836         if (host->mmc->caps & MMC_CAP_CD_WAKE)
1837                 device_init_wakeup(&pdev->dev, true);
1838
1839         if (slot->cd_idx >= 0) {
1840                 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
1841                                            slot->cd_override_level, 0, NULL);
1842                 if (ret && ret != -EPROBE_DEFER)
1843                         ret = mmc_gpiod_request_cd(host->mmc, NULL,
1844                                                    slot->cd_idx,
1845                                                    slot->cd_override_level,
1846                                                    0, NULL);
1847                 if (ret == -EPROBE_DEFER)
1848                         goto remove;
1849
1850                 if (ret) {
1851                         dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1852                         slot->cd_idx = -1;
1853                 }
1854         }
1855
1856         if (chip->fixes && chip->fixes->add_host)
1857                 ret = chip->fixes->add_host(slot);
1858         else
1859                 ret = sdhci_add_host(host);
1860         if (ret)
1861                 goto remove;
1862
1863         sdhci_pci_add_own_cd(slot);
1864
1865         /*
1866          * Check if the chip needs a separate GPIO for card detect to wake up
1867          * from runtime suspend.  If it is not there, don't allow runtime PM.
1868          * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1869          */
1870         if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1871             !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1872                 chip->allow_runtime_pm = false;
1873
1874         return slot;
1875
1876 remove:
1877         if (chip->fixes && chip->fixes->remove_slot)
1878                 chip->fixes->remove_slot(slot, 0);
1879
1880 cleanup:
1881         if (slot->data && slot->data->cleanup)
1882                 slot->data->cleanup(slot->data);
1883
1884 free:
1885         sdhci_free_host(host);
1886
1887         return ERR_PTR(ret);
1888 }
1889
1890 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1891 {
1892         int dead;
1893         u32 scratch;
1894
1895         sdhci_pci_remove_own_cd(slot);
1896
1897         dead = 0;
1898         scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1899         if (scratch == (u32)-1)
1900                 dead = 1;
1901
1902         sdhci_remove_host(slot->host, dead);
1903
1904         if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1905                 slot->chip->fixes->remove_slot(slot, dead);
1906
1907         if (slot->data && slot->data->cleanup)
1908                 slot->data->cleanup(slot->data);
1909
1910         sdhci_free_host(slot->host);
1911 }
1912
1913 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1914 {
1915         pm_suspend_ignore_children(dev, 1);
1916         pm_runtime_set_autosuspend_delay(dev, 50);
1917         pm_runtime_use_autosuspend(dev);
1918         pm_runtime_allow(dev);
1919         /* Stay active until mmc core scans for a card */
1920         pm_runtime_put_noidle(dev);
1921 }
1922
1923 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1924 {
1925         pm_runtime_forbid(dev);
1926         pm_runtime_get_noresume(dev);
1927 }
1928
1929 static int sdhci_pci_probe(struct pci_dev *pdev,
1930                                      const struct pci_device_id *ent)
1931 {
1932         struct sdhci_pci_chip *chip;
1933         struct sdhci_pci_slot *slot;
1934
1935         u8 slots, first_bar;
1936         int ret, i;
1937
1938         BUG_ON(pdev == NULL);
1939         BUG_ON(ent == NULL);
1940
1941         dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1942                  (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1943
1944         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1945         if (ret)
1946                 return ret;
1947
1948         slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1949         dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1950         if (slots == 0)
1951                 return -ENODEV;
1952
1953         BUG_ON(slots > MAX_SLOTS);
1954
1955         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1956         if (ret)
1957                 return ret;
1958
1959         first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1960
1961         if (first_bar > 5) {
1962                 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1963                 return -ENODEV;
1964         }
1965
1966         ret = pcim_enable_device(pdev);
1967         if (ret)
1968                 return ret;
1969
1970         chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
1971         if (!chip)
1972                 return -ENOMEM;
1973
1974         chip->pdev = pdev;
1975         chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1976         if (chip->fixes) {
1977                 chip->quirks = chip->fixes->quirks;
1978                 chip->quirks2 = chip->fixes->quirks2;
1979                 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1980         }
1981         chip->num_slots = slots;
1982         chip->pm_retune = true;
1983         chip->rpm_retune = true;
1984
1985         pci_set_drvdata(pdev, chip);
1986
1987         if (chip->fixes && chip->fixes->probe) {
1988                 ret = chip->fixes->probe(chip);
1989                 if (ret)
1990                         return ret;
1991         }
1992
1993         slots = chip->num_slots;        /* Quirk may have changed this */
1994
1995         for (i = 0; i < slots; i++) {
1996                 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1997                 if (IS_ERR(slot)) {
1998                         for (i--; i >= 0; i--)
1999                                 sdhci_pci_remove_slot(chip->slots[i]);
2000                         return PTR_ERR(slot);
2001                 }
2002
2003                 chip->slots[i] = slot;
2004         }
2005
2006         if (chip->allow_runtime_pm)
2007                 sdhci_pci_runtime_pm_allow(&pdev->dev);
2008
2009         return 0;
2010 }
2011
2012 static void sdhci_pci_remove(struct pci_dev *pdev)
2013 {
2014         int i;
2015         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2016
2017         if (chip->allow_runtime_pm)
2018                 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2019
2020         for (i = 0; i < chip->num_slots; i++)
2021                 sdhci_pci_remove_slot(chip->slots[i]);
2022 }
2023
2024 static struct pci_driver sdhci_driver = {
2025         .name =         "sdhci-pci",
2026         .id_table =     pci_ids,
2027         .probe =        sdhci_pci_probe,
2028         .remove =       sdhci_pci_remove,
2029         .driver =       {
2030                 .pm =   &sdhci_pci_pm_ops
2031         },
2032 };
2033
2034 module_pci_driver(sdhci_driver);
2035
2036 MODULE_AUTHOR("Pierre Ossman <[email protected]>");
2037 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2038 MODULE_LICENSE("GPL");
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