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[linux.git] / drivers / mmc / host / sdhci-pci-core.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*  linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
3  *
4  *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
5  *
6  * Thanks to the following companies for their support:
7  *
8  *     - JMicron (hardware and technical support)
9  */
10
11 #include <linux/bitfield.h>
12 #include <linux/string.h>
13 #include <linux/delay.h>
14 #include <linux/highmem.h>
15 #include <linux/module.h>
16 #include <linux/pci.h>
17 #include <linux/dma-mapping.h>
18 #include <linux/slab.h>
19 #include <linux/device.h>
20 #include <linux/mmc/host.h>
21 #include <linux/mmc/mmc.h>
22 #include <linux/scatterlist.h>
23 #include <linux/io.h>
24 #include <linux/iopoll.h>
25 #include <linux/gpio.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/mmc/slot-gpio.h>
28 #include <linux/mmc/sdhci-pci-data.h>
29 #include <linux/acpi.h>
30 #include <linux/dmi.h>
31
32 #ifdef CONFIG_X86
33 #include <asm/iosf_mbi.h>
34 #endif
35
36 #include "cqhci.h"
37
38 #include "sdhci.h"
39 #include "sdhci-pci.h"
40
41 static void sdhci_pci_hw_reset(struct sdhci_host *host);
42
43 #ifdef CONFIG_PM_SLEEP
44 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
45 {
46         mmc_pm_flag_t pm_flags = 0;
47         bool cap_cd_wake = false;
48         int i;
49
50         for (i = 0; i < chip->num_slots; i++) {
51                 struct sdhci_pci_slot *slot = chip->slots[i];
52
53                 if (slot) {
54                         pm_flags |= slot->host->mmc->pm_flags;
55                         if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
56                                 cap_cd_wake = true;
57                 }
58         }
59
60         if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
61                 return device_wakeup_enable(&chip->pdev->dev);
62         else if (!cap_cd_wake)
63                 return device_wakeup_disable(&chip->pdev->dev);
64
65         return 0;
66 }
67
68 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
69 {
70         int i, ret;
71
72         sdhci_pci_init_wakeup(chip);
73
74         for (i = 0; i < chip->num_slots; i++) {
75                 struct sdhci_pci_slot *slot = chip->slots[i];
76                 struct sdhci_host *host;
77
78                 if (!slot)
79                         continue;
80
81                 host = slot->host;
82
83                 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
84                         mmc_retune_needed(host->mmc);
85
86                 ret = sdhci_suspend_host(host);
87                 if (ret)
88                         goto err_pci_suspend;
89
90                 if (device_may_wakeup(&chip->pdev->dev))
91                         mmc_gpio_set_cd_wake(host->mmc, true);
92         }
93
94         return 0;
95
96 err_pci_suspend:
97         while (--i >= 0)
98                 sdhci_resume_host(chip->slots[i]->host);
99         return ret;
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                 mmc_gpio_set_cd_wake(slot->host->mmc, false);
117         }
118
119         return 0;
120 }
121
122 static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
123 {
124         int ret;
125
126         ret = cqhci_suspend(chip->slots[0]->host->mmc);
127         if (ret)
128                 return ret;
129
130         return sdhci_pci_suspend_host(chip);
131 }
132
133 static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
134 {
135         int ret;
136
137         ret = sdhci_pci_resume_host(chip);
138         if (ret)
139                 return ret;
140
141         return cqhci_resume(chip->slots[0]->host->mmc);
142 }
143 #endif
144
145 #ifdef CONFIG_PM
146 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
147 {
148         struct sdhci_pci_slot *slot;
149         struct sdhci_host *host;
150         int i, ret;
151
152         for (i = 0; i < chip->num_slots; i++) {
153                 slot = chip->slots[i];
154                 if (!slot)
155                         continue;
156
157                 host = slot->host;
158
159                 ret = sdhci_runtime_suspend_host(host);
160                 if (ret)
161                         goto err_pci_runtime_suspend;
162
163                 if (chip->rpm_retune &&
164                     host->tuning_mode != SDHCI_TUNING_MODE_3)
165                         mmc_retune_needed(host->mmc);
166         }
167
168         return 0;
169
170 err_pci_runtime_suspend:
171         while (--i >= 0)
172                 sdhci_runtime_resume_host(chip->slots[i]->host, 0);
173         return ret;
174 }
175
176 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
177 {
178         struct sdhci_pci_slot *slot;
179         int i, ret;
180
181         for (i = 0; i < chip->num_slots; i++) {
182                 slot = chip->slots[i];
183                 if (!slot)
184                         continue;
185
186                 ret = sdhci_runtime_resume_host(slot->host, 0);
187                 if (ret)
188                         return ret;
189         }
190
191         return 0;
192 }
193
194 static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
195 {
196         int ret;
197
198         ret = cqhci_suspend(chip->slots[0]->host->mmc);
199         if (ret)
200                 return ret;
201
202         return sdhci_pci_runtime_suspend_host(chip);
203 }
204
205 static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
206 {
207         int ret;
208
209         ret = sdhci_pci_runtime_resume_host(chip);
210         if (ret)
211                 return ret;
212
213         return cqhci_resume(chip->slots[0]->host->mmc);
214 }
215 #endif
216
217 static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
218 {
219         int cmd_error = 0;
220         int data_error = 0;
221
222         if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
223                 return intmask;
224
225         cqhci_irq(host->mmc, intmask, cmd_error, data_error);
226
227         return 0;
228 }
229
230 static void sdhci_pci_dumpregs(struct mmc_host *mmc)
231 {
232         sdhci_dumpregs(mmc_priv(mmc));
233 }
234
235 /*****************************************************************************\
236  *                                                                           *
237  * Hardware specific quirk handling                                          *
238  *                                                                           *
239 \*****************************************************************************/
240
241 static int ricoh_probe(struct sdhci_pci_chip *chip)
242 {
243         if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
244             chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
245                 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
246         return 0;
247 }
248
249 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
250 {
251         slot->host->caps =
252                 FIELD_PREP(SDHCI_TIMEOUT_CLK_MASK, 0x21) |
253                 FIELD_PREP(SDHCI_CLOCK_BASE_MASK, 0x21) |
254                 SDHCI_TIMEOUT_CLK_UNIT |
255                 SDHCI_CAN_VDD_330 |
256                 SDHCI_CAN_DO_HISPD |
257                 SDHCI_CAN_DO_SDMA;
258         return 0;
259 }
260
261 #ifdef CONFIG_PM_SLEEP
262 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
263 {
264         /* Apply a delay to allow controller to settle */
265         /* Otherwise it becomes confused if card state changed
266                 during suspend */
267         msleep(500);
268         return sdhci_pci_resume_host(chip);
269 }
270 #endif
271
272 static const struct sdhci_pci_fixes sdhci_ricoh = {
273         .probe          = ricoh_probe,
274         .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR |
275                           SDHCI_QUIRK_FORCE_DMA |
276                           SDHCI_QUIRK_CLOCK_BEFORE_RESET,
277 };
278
279 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
280         .probe_slot     = ricoh_mmc_probe_slot,
281 #ifdef CONFIG_PM_SLEEP
282         .resume         = ricoh_mmc_resume,
283 #endif
284         .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR |
285                           SDHCI_QUIRK_CLOCK_BEFORE_RESET |
286                           SDHCI_QUIRK_NO_CARD_NO_RESET |
287                           SDHCI_QUIRK_MISSING_CAPS
288 };
289
290 static const struct sdhci_pci_fixes sdhci_ene_712 = {
291         .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
292                           SDHCI_QUIRK_BROKEN_DMA,
293 };
294
295 static const struct sdhci_pci_fixes sdhci_ene_714 = {
296         .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
297                           SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
298                           SDHCI_QUIRK_BROKEN_DMA,
299 };
300
301 static const struct sdhci_pci_fixes sdhci_cafe = {
302         .quirks         = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
303                           SDHCI_QUIRK_NO_BUSY_IRQ |
304                           SDHCI_QUIRK_BROKEN_CARD_DETECTION |
305                           SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
306 };
307
308 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
309         .quirks         = SDHCI_QUIRK_NO_HISPD_BIT,
310 };
311
312 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
313 {
314         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
315         return 0;
316 }
317
318 /*
319  * ADMA operation is disabled for Moorestown platform due to
320  * hardware bugs.
321  */
322 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
323 {
324         /*
325          * slots number is fixed here for MRST as SDIO3/5 are never used and
326          * have hardware bugs.
327          */
328         chip->num_slots = 1;
329         return 0;
330 }
331
332 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
333 {
334         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
335         return 0;
336 }
337
338 #ifdef CONFIG_PM
339
340 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
341 {
342         struct sdhci_pci_slot *slot = dev_id;
343         struct sdhci_host *host = slot->host;
344
345         mmc_detect_change(host->mmc, msecs_to_jiffies(200));
346         return IRQ_HANDLED;
347 }
348
349 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
350 {
351         int err, irq, gpio = slot->cd_gpio;
352
353         slot->cd_gpio = -EINVAL;
354         slot->cd_irq = -EINVAL;
355
356         if (!gpio_is_valid(gpio))
357                 return;
358
359         err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
360         if (err < 0)
361                 goto out;
362
363         err = gpio_direction_input(gpio);
364         if (err < 0)
365                 goto out_free;
366
367         irq = gpio_to_irq(gpio);
368         if (irq < 0)
369                 goto out_free;
370
371         err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
372                           IRQF_TRIGGER_FALLING, "sd_cd", slot);
373         if (err)
374                 goto out_free;
375
376         slot->cd_gpio = gpio;
377         slot->cd_irq = irq;
378
379         return;
380
381 out_free:
382         devm_gpio_free(&slot->chip->pdev->dev, gpio);
383 out:
384         dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
385 }
386
387 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
388 {
389         if (slot->cd_irq >= 0)
390                 free_irq(slot->cd_irq, slot);
391 }
392
393 #else
394
395 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
396 {
397 }
398
399 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
400 {
401 }
402
403 #endif
404
405 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
406 {
407         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
408         slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
409         return 0;
410 }
411
412 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
413 {
414         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
415         return 0;
416 }
417
418 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
419         .quirks         = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
420         .probe_slot     = mrst_hc_probe_slot,
421 };
422
423 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
424         .quirks         = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
425         .probe          = mrst_hc_probe,
426 };
427
428 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
429         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
430         .allow_runtime_pm = true,
431         .own_cd_for_runtime_pm = true,
432 };
433
434 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
435         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
436         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
437         .allow_runtime_pm = true,
438         .probe_slot     = mfd_sdio_probe_slot,
439 };
440
441 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
442         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
443         .allow_runtime_pm = true,
444         .probe_slot     = mfd_emmc_probe_slot,
445 };
446
447 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
448         .quirks         = SDHCI_QUIRK_BROKEN_ADMA,
449         .probe_slot     = pch_hc_probe_slot,
450 };
451
452 #ifdef CONFIG_X86
453
454 #define BYT_IOSF_SCCEP                  0x63
455 #define BYT_IOSF_OCP_NETCTRL0           0x1078
456 #define BYT_IOSF_OCP_TIMEOUT_BASE       GENMASK(10, 8)
457
458 static void byt_ocp_setting(struct pci_dev *pdev)
459 {
460         u32 val = 0;
461
462         if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC &&
463             pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO &&
464             pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD &&
465             pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2)
466                 return;
467
468         if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
469                           &val)) {
470                 dev_err(&pdev->dev, "%s read error\n", __func__);
471                 return;
472         }
473
474         if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
475                 return;
476
477         val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
478
479         if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
480                            val)) {
481                 dev_err(&pdev->dev, "%s write error\n", __func__);
482                 return;
483         }
484
485         dev_dbg(&pdev->dev, "%s completed\n", __func__);
486 }
487
488 #else
489
490 static inline void byt_ocp_setting(struct pci_dev *pdev)
491 {
492 }
493
494 #endif
495
496 enum {
497         INTEL_DSM_FNS           =  0,
498         INTEL_DSM_V18_SWITCH    =  3,
499         INTEL_DSM_V33_SWITCH    =  4,
500         INTEL_DSM_DRV_STRENGTH  =  9,
501         INTEL_DSM_D3_RETUNE     = 10,
502 };
503
504 struct intel_host {
505         u32     dsm_fns;
506         int     drv_strength;
507         bool    d3_retune;
508         bool    rpm_retune_ok;
509         u32     glk_rx_ctrl1;
510         u32     glk_tun_val;
511 };
512
513 static const guid_t intel_dsm_guid =
514         GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
515                   0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
516
517 static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
518                        unsigned int fn, u32 *result)
519 {
520         union acpi_object *obj;
521         int err = 0;
522         size_t len;
523
524         obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
525         if (!obj)
526                 return -EOPNOTSUPP;
527
528         if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
529                 err = -EINVAL;
530                 goto out;
531         }
532
533         len = min_t(size_t, obj->buffer.length, 4);
534
535         *result = 0;
536         memcpy(result, obj->buffer.pointer, len);
537 out:
538         ACPI_FREE(obj);
539
540         return err;
541 }
542
543 static int intel_dsm(struct intel_host *intel_host, struct device *dev,
544                      unsigned int fn, u32 *result)
545 {
546         if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
547                 return -EOPNOTSUPP;
548
549         return __intel_dsm(intel_host, dev, fn, result);
550 }
551
552 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
553                            struct mmc_host *mmc)
554 {
555         int err;
556         u32 val;
557
558         intel_host->d3_retune = true;
559
560         err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
561         if (err) {
562                 pr_debug("%s: DSM not supported, error %d\n",
563                          mmc_hostname(mmc), err);
564                 return;
565         }
566
567         pr_debug("%s: DSM function mask %#x\n",
568                  mmc_hostname(mmc), intel_host->dsm_fns);
569
570         err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
571         intel_host->drv_strength = err ? 0 : val;
572
573         err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
574         intel_host->d3_retune = err ? true : !!val;
575 }
576
577 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
578 {
579         u8 reg;
580
581         reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
582         reg |= 0x10;
583         sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
584         /* For eMMC, minimum is 1us but give it 9us for good measure */
585         udelay(9);
586         reg &= ~0x10;
587         sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
588         /* For eMMC, minimum is 200us but give it 300us for good measure */
589         usleep_range(300, 1000);
590 }
591
592 static int intel_select_drive_strength(struct mmc_card *card,
593                                        unsigned int max_dtr, int host_drv,
594                                        int card_drv, int *drv_type)
595 {
596         struct sdhci_host *host = mmc_priv(card->host);
597         struct sdhci_pci_slot *slot = sdhci_priv(host);
598         struct intel_host *intel_host = sdhci_pci_priv(slot);
599
600         if (!(mmc_driver_type_mask(intel_host->drv_strength) & card_drv))
601                 return 0;
602
603         return intel_host->drv_strength;
604 }
605
606 static int bxt_get_cd(struct mmc_host *mmc)
607 {
608         int gpio_cd = mmc_gpio_get_cd(mmc);
609         struct sdhci_host *host = mmc_priv(mmc);
610         unsigned long flags;
611         int ret = 0;
612
613         if (!gpio_cd)
614                 return 0;
615
616         spin_lock_irqsave(&host->lock, flags);
617
618         if (host->flags & SDHCI_DEVICE_DEAD)
619                 goto out;
620
621         ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
622 out:
623         spin_unlock_irqrestore(&host->lock, flags);
624
625         return ret;
626 }
627
628 #define SDHCI_INTEL_PWR_TIMEOUT_CNT     20
629 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY  100
630
631 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
632                                   unsigned short vdd)
633 {
634         int cntr;
635         u8 reg;
636
637         sdhci_set_power(host, mode, vdd);
638
639         if (mode == MMC_POWER_OFF)
640                 return;
641
642         /*
643          * Bus power might not enable after D3 -> D0 transition due to the
644          * present state not yet having propagated. Retry for up to 2ms.
645          */
646         for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
647                 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
648                 if (reg & SDHCI_POWER_ON)
649                         break;
650                 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
651                 reg |= SDHCI_POWER_ON;
652                 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
653         }
654 }
655
656 #define INTEL_HS400_ES_REG 0x78
657 #define INTEL_HS400_ES_BIT BIT(0)
658
659 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
660                                         struct mmc_ios *ios)
661 {
662         struct sdhci_host *host = mmc_priv(mmc);
663         u32 val;
664
665         val = sdhci_readl(host, INTEL_HS400_ES_REG);
666         if (ios->enhanced_strobe)
667                 val |= INTEL_HS400_ES_BIT;
668         else
669                 val &= ~INTEL_HS400_ES_BIT;
670         sdhci_writel(host, val, INTEL_HS400_ES_REG);
671 }
672
673 static int intel_start_signal_voltage_switch(struct mmc_host *mmc,
674                                              struct mmc_ios *ios)
675 {
676         struct device *dev = mmc_dev(mmc);
677         struct sdhci_host *host = mmc_priv(mmc);
678         struct sdhci_pci_slot *slot = sdhci_priv(host);
679         struct intel_host *intel_host = sdhci_pci_priv(slot);
680         unsigned int fn;
681         u32 result = 0;
682         int err;
683
684         err = sdhci_start_signal_voltage_switch(mmc, ios);
685         if (err)
686                 return err;
687
688         switch (ios->signal_voltage) {
689         case MMC_SIGNAL_VOLTAGE_330:
690                 fn = INTEL_DSM_V33_SWITCH;
691                 break;
692         case MMC_SIGNAL_VOLTAGE_180:
693                 fn = INTEL_DSM_V18_SWITCH;
694                 break;
695         default:
696                 return 0;
697         }
698
699         err = intel_dsm(intel_host, dev, fn, &result);
700         pr_debug("%s: %s DSM fn %u error %d result %u\n",
701                  mmc_hostname(mmc), __func__, fn, err, result);
702
703         return 0;
704 }
705
706 static const struct sdhci_ops sdhci_intel_byt_ops = {
707         .set_clock              = sdhci_set_clock,
708         .set_power              = sdhci_intel_set_power,
709         .enable_dma             = sdhci_pci_enable_dma,
710         .set_bus_width          = sdhci_set_bus_width,
711         .reset                  = sdhci_reset,
712         .set_uhs_signaling      = sdhci_set_uhs_signaling,
713         .hw_reset               = sdhci_pci_hw_reset,
714 };
715
716 static const struct sdhci_ops sdhci_intel_glk_ops = {
717         .set_clock              = sdhci_set_clock,
718         .set_power              = sdhci_intel_set_power,
719         .enable_dma             = sdhci_pci_enable_dma,
720         .set_bus_width          = sdhci_set_bus_width,
721         .reset                  = sdhci_reset,
722         .set_uhs_signaling      = sdhci_set_uhs_signaling,
723         .hw_reset               = sdhci_pci_hw_reset,
724         .irq                    = sdhci_cqhci_irq,
725 };
726
727 static void byt_read_dsm(struct sdhci_pci_slot *slot)
728 {
729         struct intel_host *intel_host = sdhci_pci_priv(slot);
730         struct device *dev = &slot->chip->pdev->dev;
731         struct mmc_host *mmc = slot->host->mmc;
732
733         intel_dsm_init(intel_host, dev, mmc);
734         slot->chip->rpm_retune = intel_host->d3_retune;
735 }
736
737 static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
738 {
739         int err = sdhci_execute_tuning(mmc, opcode);
740         struct sdhci_host *host = mmc_priv(mmc);
741
742         if (err)
743                 return err;
744
745         /*
746          * Tuning can leave the IP in an active state (Buffer Read Enable bit
747          * set) which prevents the entry to low power states (i.e. S0i3). Data
748          * reset will clear it.
749          */
750         sdhci_reset(host, SDHCI_RESET_DATA);
751
752         return 0;
753 }
754
755 static void byt_probe_slot(struct sdhci_pci_slot *slot)
756 {
757         struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
758         struct device *dev = &slot->chip->pdev->dev;
759         struct mmc_host *mmc = slot->host->mmc;
760
761         byt_read_dsm(slot);
762
763         byt_ocp_setting(slot->chip->pdev);
764
765         ops->execute_tuning = intel_execute_tuning;
766         ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
767
768         device_property_read_u32(dev, "max-frequency", &mmc->f_max);
769 }
770
771 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
772 {
773         byt_probe_slot(slot);
774         slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
775                                  MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
776                                  MMC_CAP_CMD_DURING_TFR |
777                                  MMC_CAP_WAIT_WHILE_BUSY;
778         slot->hw_reset = sdhci_pci_int_hw_reset;
779         if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
780                 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
781         slot->host->mmc_host_ops.select_drive_strength =
782                                                 intel_select_drive_strength;
783         return 0;
784 }
785
786 static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
787 {
788         return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
789                dmi_match(DMI_BIOS_VENDOR, "LENOVO");
790 }
791
792 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
793 {
794         int ret = byt_emmc_probe_slot(slot);
795
796         if (!glk_broken_cqhci(slot))
797                 slot->host->mmc->caps2 |= MMC_CAP2_CQE;
798
799         if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
800                 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
801                 slot->host->mmc_host_ops.hs400_enhanced_strobe =
802                                                 intel_hs400_enhanced_strobe;
803                 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
804         }
805
806         return ret;
807 }
808
809 static const struct cqhci_host_ops glk_cqhci_ops = {
810         .enable         = sdhci_cqe_enable,
811         .disable        = sdhci_cqe_disable,
812         .dumpregs       = sdhci_pci_dumpregs,
813 };
814
815 static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
816 {
817         struct device *dev = &slot->chip->pdev->dev;
818         struct sdhci_host *host = slot->host;
819         struct cqhci_host *cq_host;
820         bool dma64;
821         int ret;
822
823         ret = sdhci_setup_host(host);
824         if (ret)
825                 return ret;
826
827         cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
828         if (!cq_host) {
829                 ret = -ENOMEM;
830                 goto cleanup;
831         }
832
833         cq_host->mmio = host->ioaddr + 0x200;
834         cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
835         cq_host->ops = &glk_cqhci_ops;
836
837         dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
838         if (dma64)
839                 cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
840
841         ret = cqhci_init(cq_host, host->mmc, dma64);
842         if (ret)
843                 goto cleanup;
844
845         ret = __sdhci_add_host(host);
846         if (ret)
847                 goto cleanup;
848
849         return 0;
850
851 cleanup:
852         sdhci_cleanup_host(host);
853         return ret;
854 }
855
856 #ifdef CONFIG_PM
857 #define GLK_RX_CTRL1    0x834
858 #define GLK_TUN_VAL     0x840
859 #define GLK_PATH_PLL    GENMASK(13, 8)
860 #define GLK_DLY         GENMASK(6, 0)
861 /* Workaround firmware failing to restore the tuning value */
862 static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp)
863 {
864         struct sdhci_pci_slot *slot = chip->slots[0];
865         struct intel_host *intel_host = sdhci_pci_priv(slot);
866         struct sdhci_host *host = slot->host;
867         u32 glk_rx_ctrl1;
868         u32 glk_tun_val;
869         u32 dly;
870
871         if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc))
872                 return;
873
874         glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1);
875         glk_tun_val = sdhci_readl(host, GLK_TUN_VAL);
876
877         if (susp) {
878                 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1;
879                 intel_host->glk_tun_val = glk_tun_val;
880                 return;
881         }
882
883         if (!intel_host->glk_tun_val)
884                 return;
885
886         if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) {
887                 intel_host->rpm_retune_ok = true;
888                 return;
889         }
890
891         dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) +
892                                   (intel_host->glk_tun_val << 1));
893         if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1))
894                 return;
895
896         glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly;
897         sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1);
898
899         intel_host->rpm_retune_ok = true;
900         chip->rpm_retune = true;
901         mmc_retune_needed(host->mmc);
902         pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc));
903 }
904
905 static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp)
906 {
907         if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
908             !chip->rpm_retune)
909                 glk_rpm_retune_wa(chip, susp);
910 }
911
912 static int glk_runtime_suspend(struct sdhci_pci_chip *chip)
913 {
914         glk_rpm_retune_chk(chip, true);
915
916         return sdhci_cqhci_runtime_suspend(chip);
917 }
918
919 static int glk_runtime_resume(struct sdhci_pci_chip *chip)
920 {
921         glk_rpm_retune_chk(chip, false);
922
923         return sdhci_cqhci_runtime_resume(chip);
924 }
925 #endif
926
927 #ifdef CONFIG_ACPI
928 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
929 {
930         acpi_status status;
931         unsigned long long max_freq;
932
933         status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
934                                        "MXFQ", NULL, &max_freq);
935         if (ACPI_FAILURE(status)) {
936                 dev_err(&slot->chip->pdev->dev,
937                         "MXFQ not found in acpi table\n");
938                 return -EINVAL;
939         }
940
941         slot->host->mmc->f_max = max_freq * 1000000;
942
943         return 0;
944 }
945 #else
946 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
947 {
948         return 0;
949 }
950 #endif
951
952 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
953 {
954         int err;
955
956         byt_probe_slot(slot);
957
958         err = ni_set_max_freq(slot);
959         if (err)
960                 return err;
961
962         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
963                                  MMC_CAP_WAIT_WHILE_BUSY;
964         return 0;
965 }
966
967 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
968 {
969         byt_probe_slot(slot);
970         slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
971                                  MMC_CAP_WAIT_WHILE_BUSY;
972         return 0;
973 }
974
975 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
976 {
977         byt_probe_slot(slot);
978         slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
979                                  MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
980         slot->cd_idx = 0;
981         slot->cd_override_level = true;
982         if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
983             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
984             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
985             slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
986                 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
987
988         if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI &&
989             slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3)
990                 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V;
991
992         return 0;
993 }
994
995 #ifdef CONFIG_PM_SLEEP
996
997 static int byt_resume(struct sdhci_pci_chip *chip)
998 {
999         byt_ocp_setting(chip->pdev);
1000
1001         return sdhci_pci_resume_host(chip);
1002 }
1003
1004 #endif
1005
1006 #ifdef CONFIG_PM
1007
1008 static int byt_runtime_resume(struct sdhci_pci_chip *chip)
1009 {
1010         byt_ocp_setting(chip->pdev);
1011
1012         return sdhci_pci_runtime_resume_host(chip);
1013 }
1014
1015 #endif
1016
1017 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
1018 #ifdef CONFIG_PM_SLEEP
1019         .resume         = byt_resume,
1020 #endif
1021 #ifdef CONFIG_PM
1022         .runtime_resume = byt_runtime_resume,
1023 #endif
1024         .allow_runtime_pm = true,
1025         .probe_slot     = byt_emmc_probe_slot,
1026         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1027                           SDHCI_QUIRK_NO_LED,
1028         .quirks2        = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1029                           SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1030                           SDHCI_QUIRK2_STOP_WITH_TC,
1031         .ops            = &sdhci_intel_byt_ops,
1032         .priv_size      = sizeof(struct intel_host),
1033 };
1034
1035 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
1036         .allow_runtime_pm       = true,
1037         .probe_slot             = glk_emmc_probe_slot,
1038         .add_host               = glk_emmc_add_host,
1039 #ifdef CONFIG_PM_SLEEP
1040         .suspend                = sdhci_cqhci_suspend,
1041         .resume                 = sdhci_cqhci_resume,
1042 #endif
1043 #ifdef CONFIG_PM
1044         .runtime_suspend        = glk_runtime_suspend,
1045         .runtime_resume         = glk_runtime_resume,
1046 #endif
1047         .quirks                 = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1048                                   SDHCI_QUIRK_NO_LED,
1049         .quirks2                = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1050                                   SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1051                                   SDHCI_QUIRK2_STOP_WITH_TC,
1052         .ops                    = &sdhci_intel_glk_ops,
1053         .priv_size              = sizeof(struct intel_host),
1054 };
1055
1056 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
1057 #ifdef CONFIG_PM_SLEEP
1058         .resume         = byt_resume,
1059 #endif
1060 #ifdef CONFIG_PM
1061         .runtime_resume = byt_runtime_resume,
1062 #endif
1063         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1064                           SDHCI_QUIRK_NO_LED,
1065         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1066                           SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1067         .allow_runtime_pm = true,
1068         .probe_slot     = ni_byt_sdio_probe_slot,
1069         .ops            = &sdhci_intel_byt_ops,
1070         .priv_size      = sizeof(struct intel_host),
1071 };
1072
1073 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
1074 #ifdef CONFIG_PM_SLEEP
1075         .resume         = byt_resume,
1076 #endif
1077 #ifdef CONFIG_PM
1078         .runtime_resume = byt_runtime_resume,
1079 #endif
1080         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1081                           SDHCI_QUIRK_NO_LED,
1082         .quirks2        = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1083                         SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1084         .allow_runtime_pm = true,
1085         .probe_slot     = byt_sdio_probe_slot,
1086         .ops            = &sdhci_intel_byt_ops,
1087         .priv_size      = sizeof(struct intel_host),
1088 };
1089
1090 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
1091 #ifdef CONFIG_PM_SLEEP
1092         .resume         = byt_resume,
1093 #endif
1094 #ifdef CONFIG_PM
1095         .runtime_resume = byt_runtime_resume,
1096 #endif
1097         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1098                           SDHCI_QUIRK_NO_LED,
1099         .quirks2        = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
1100                           SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1101                           SDHCI_QUIRK2_STOP_WITH_TC,
1102         .allow_runtime_pm = true,
1103         .own_cd_for_runtime_pm = true,
1104         .probe_slot     = byt_sd_probe_slot,
1105         .ops            = &sdhci_intel_byt_ops,
1106         .priv_size      = sizeof(struct intel_host),
1107 };
1108
1109 /* Define Host controllers for Intel Merrifield platform */
1110 #define INTEL_MRFLD_EMMC_0      0
1111 #define INTEL_MRFLD_EMMC_1      1
1112 #define INTEL_MRFLD_SD          2
1113 #define INTEL_MRFLD_SDIO        3
1114
1115 #ifdef CONFIG_ACPI
1116 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
1117 {
1118         struct acpi_device *device, *child;
1119
1120         device = ACPI_COMPANION(&slot->chip->pdev->dev);
1121         if (!device)
1122                 return;
1123
1124         acpi_device_fix_up_power(device);
1125         list_for_each_entry(child, &device->children, node)
1126                 if (child->status.present && child->status.enabled)
1127                         acpi_device_fix_up_power(child);
1128 }
1129 #else
1130 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
1131 #endif
1132
1133 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
1134 {
1135         unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
1136
1137         switch (func) {
1138         case INTEL_MRFLD_EMMC_0:
1139         case INTEL_MRFLD_EMMC_1:
1140                 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1141                                          MMC_CAP_8_BIT_DATA |
1142                                          MMC_CAP_1_8V_DDR;
1143                 break;
1144         case INTEL_MRFLD_SD:
1145                 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
1146                 break;
1147         case INTEL_MRFLD_SDIO:
1148                 /* Advertise 2.0v for compatibility with the SDIO card's OCR */
1149                 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195;
1150                 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1151                                          MMC_CAP_POWER_OFF_CARD;
1152                 break;
1153         default:
1154                 return -ENODEV;
1155         }
1156
1157         intel_mrfld_mmc_fix_up_power_slot(slot);
1158         return 0;
1159 }
1160
1161 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
1162         .quirks         = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1163         .quirks2        = SDHCI_QUIRK2_BROKEN_HS200 |
1164                         SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1165         .allow_runtime_pm = true,
1166         .probe_slot     = intel_mrfld_mmc_probe_slot,
1167 };
1168
1169 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
1170 {
1171         u8 scratch;
1172         int ret;
1173
1174         ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
1175         if (ret)
1176                 return ret;
1177
1178         /*
1179          * Turn PMOS on [bit 0], set over current detection to 2.4 V
1180          * [bit 1:2] and enable over current debouncing [bit 6].
1181          */
1182         if (on)
1183                 scratch |= 0x47;
1184         else
1185                 scratch &= ~0x47;
1186
1187         return pci_write_config_byte(chip->pdev, 0xAE, scratch);
1188 }
1189
1190 static int jmicron_probe(struct sdhci_pci_chip *chip)
1191 {
1192         int ret;
1193         u16 mmcdev = 0;
1194
1195         if (chip->pdev->revision == 0) {
1196                 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
1197                           SDHCI_QUIRK_32BIT_DMA_SIZE |
1198                           SDHCI_QUIRK_32BIT_ADMA_SIZE |
1199                           SDHCI_QUIRK_RESET_AFTER_REQUEST |
1200                           SDHCI_QUIRK_BROKEN_SMALL_PIO;
1201         }
1202
1203         /*
1204          * JMicron chips can have two interfaces to the same hardware
1205          * in order to work around limitations in Microsoft's driver.
1206          * We need to make sure we only bind to one of them.
1207          *
1208          * This code assumes two things:
1209          *
1210          * 1. The PCI code adds subfunctions in order.
1211          *
1212          * 2. The MMC interface has a lower subfunction number
1213          *    than the SD interface.
1214          */
1215         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
1216                 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
1217         else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
1218                 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
1219
1220         if (mmcdev) {
1221                 struct pci_dev *sd_dev;
1222
1223                 sd_dev = NULL;
1224                 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
1225                                                 mmcdev, sd_dev)) != NULL) {
1226                         if ((PCI_SLOT(chip->pdev->devfn) ==
1227                                 PCI_SLOT(sd_dev->devfn)) &&
1228                                 (chip->pdev->bus == sd_dev->bus))
1229                                 break;
1230                 }
1231
1232                 if (sd_dev) {
1233                         pci_dev_put(sd_dev);
1234                         dev_info(&chip->pdev->dev, "Refusing to bind to "
1235                                 "secondary interface.\n");
1236                         return -ENODEV;
1237                 }
1238         }
1239
1240         /*
1241          * JMicron chips need a bit of a nudge to enable the power
1242          * output pins.
1243          */
1244         ret = jmicron_pmos(chip, 1);
1245         if (ret) {
1246                 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1247                 return ret;
1248         }
1249
1250         /* quirk for unsable RO-detection on JM388 chips */
1251         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
1252             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1253                 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
1254
1255         return 0;
1256 }
1257
1258 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
1259 {
1260         u8 scratch;
1261
1262         scratch = readb(host->ioaddr + 0xC0);
1263
1264         if (on)
1265                 scratch |= 0x01;
1266         else
1267                 scratch &= ~0x01;
1268
1269         writeb(scratch, host->ioaddr + 0xC0);
1270 }
1271
1272 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
1273 {
1274         if (slot->chip->pdev->revision == 0) {
1275                 u16 version;
1276
1277                 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
1278                 version = (version & SDHCI_VENDOR_VER_MASK) >>
1279                         SDHCI_VENDOR_VER_SHIFT;
1280
1281                 /*
1282                  * Older versions of the chip have lots of nasty glitches
1283                  * in the ADMA engine. It's best just to avoid it
1284                  * completely.
1285                  */
1286                 if (version < 0xAC)
1287                         slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
1288         }
1289
1290         /* JM388 MMC doesn't support 1.8V while SD supports it */
1291         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1292                 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
1293                         MMC_VDD_29_30 | MMC_VDD_30_31 |
1294                         MMC_VDD_165_195; /* allow 1.8V */
1295                 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
1296                         MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
1297         }
1298
1299         /*
1300          * The secondary interface requires a bit set to get the
1301          * interrupts.
1302          */
1303         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1304             slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1305                 jmicron_enable_mmc(slot->host, 1);
1306
1307         slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
1308
1309         return 0;
1310 }
1311
1312 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
1313 {
1314         if (dead)
1315                 return;
1316
1317         if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1318             slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1319                 jmicron_enable_mmc(slot->host, 0);
1320 }
1321
1322 #ifdef CONFIG_PM_SLEEP
1323 static int jmicron_suspend(struct sdhci_pci_chip *chip)
1324 {
1325         int i, ret;
1326
1327         ret = sdhci_pci_suspend_host(chip);
1328         if (ret)
1329                 return ret;
1330
1331         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1332             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1333                 for (i = 0; i < chip->num_slots; i++)
1334                         jmicron_enable_mmc(chip->slots[i]->host, 0);
1335         }
1336
1337         return 0;
1338 }
1339
1340 static int jmicron_resume(struct sdhci_pci_chip *chip)
1341 {
1342         int ret, i;
1343
1344         if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1345             chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1346                 for (i = 0; i < chip->num_slots; i++)
1347                         jmicron_enable_mmc(chip->slots[i]->host, 1);
1348         }
1349
1350         ret = jmicron_pmos(chip, 1);
1351         if (ret) {
1352                 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1353                 return ret;
1354         }
1355
1356         return sdhci_pci_resume_host(chip);
1357 }
1358 #endif
1359
1360 static const struct sdhci_pci_fixes sdhci_jmicron = {
1361         .probe          = jmicron_probe,
1362
1363         .probe_slot     = jmicron_probe_slot,
1364         .remove_slot    = jmicron_remove_slot,
1365
1366 #ifdef CONFIG_PM_SLEEP
1367         .suspend        = jmicron_suspend,
1368         .resume         = jmicron_resume,
1369 #endif
1370 };
1371
1372 /* SysKonnect CardBus2SDIO extra registers */
1373 #define SYSKT_CTRL              0x200
1374 #define SYSKT_RDFIFO_STAT       0x204
1375 #define SYSKT_WRFIFO_STAT       0x208
1376 #define SYSKT_POWER_DATA        0x20c
1377 #define   SYSKT_POWER_330       0xef
1378 #define   SYSKT_POWER_300       0xf8
1379 #define   SYSKT_POWER_184       0xcc
1380 #define SYSKT_POWER_CMD         0x20d
1381 #define   SYSKT_POWER_START     (1 << 7)
1382 #define SYSKT_POWER_STATUS      0x20e
1383 #define   SYSKT_POWER_STATUS_OK (1 << 0)
1384 #define SYSKT_BOARD_REV         0x210
1385 #define SYSKT_CHIP_REV          0x211
1386 #define SYSKT_CONF_DATA         0x212
1387 #define   SYSKT_CONF_DATA_1V8   (1 << 2)
1388 #define   SYSKT_CONF_DATA_2V5   (1 << 1)
1389 #define   SYSKT_CONF_DATA_3V3   (1 << 0)
1390
1391 static int syskt_probe(struct sdhci_pci_chip *chip)
1392 {
1393         if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1394                 chip->pdev->class &= ~0x0000FF;
1395                 chip->pdev->class |= PCI_SDHCI_IFDMA;
1396         }
1397         return 0;
1398 }
1399
1400 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1401 {
1402         int tm, ps;
1403
1404         u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1405         u8  chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1406         dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1407                                          "board rev %d.%d, chip rev %d.%d\n",
1408                                          board_rev >> 4, board_rev & 0xf,
1409                                          chip_rev >> 4,  chip_rev & 0xf);
1410         if (chip_rev >= 0x20)
1411                 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1412
1413         writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1414         writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1415         udelay(50);
1416         tm = 10;  /* Wait max 1 ms */
1417         do {
1418                 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1419                 if (ps & SYSKT_POWER_STATUS_OK)
1420                         break;
1421                 udelay(100);
1422         } while (--tm);
1423         if (!tm) {
1424                 dev_err(&slot->chip->pdev->dev,
1425                         "power regulator never stabilized");
1426                 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1427                 return -ENODEV;
1428         }
1429
1430         return 0;
1431 }
1432
1433 static const struct sdhci_pci_fixes sdhci_syskt = {
1434         .quirks         = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1435         .probe          = syskt_probe,
1436         .probe_slot     = syskt_probe_slot,
1437 };
1438
1439 static int via_probe(struct sdhci_pci_chip *chip)
1440 {
1441         if (chip->pdev->revision == 0x10)
1442                 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1443
1444         return 0;
1445 }
1446
1447 static const struct sdhci_pci_fixes sdhci_via = {
1448         .probe          = via_probe,
1449 };
1450
1451 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1452 {
1453         slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1454         return 0;
1455 }
1456
1457 static const struct sdhci_pci_fixes sdhci_rtsx = {
1458         .quirks2        = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1459                         SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1460                         SDHCI_QUIRK2_BROKEN_DDR50,
1461         .probe_slot     = rtsx_probe_slot,
1462 };
1463
1464 /*AMD chipset generation*/
1465 enum amd_chipset_gen {
1466         AMD_CHIPSET_BEFORE_ML,
1467         AMD_CHIPSET_CZ,
1468         AMD_CHIPSET_NL,
1469         AMD_CHIPSET_UNKNOWN,
1470 };
1471
1472 /* AMD registers */
1473 #define AMD_SD_AUTO_PATTERN             0xB8
1474 #define AMD_MSLEEP_DURATION             4
1475 #define AMD_SD_MISC_CONTROL             0xD0
1476 #define AMD_MAX_TUNE_VALUE              0x0B
1477 #define AMD_AUTO_TUNE_SEL               0x10800
1478 #define AMD_FIFO_PTR                    0x30
1479 #define AMD_BIT_MASK                    0x1F
1480
1481 static void amd_tuning_reset(struct sdhci_host *host)
1482 {
1483         unsigned int val;
1484
1485         val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1486         val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1487         sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1488
1489         val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1490         val &= ~SDHCI_CTRL_EXEC_TUNING;
1491         sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1492 }
1493
1494 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1495 {
1496         unsigned int val;
1497
1498         pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1499         val &= ~AMD_BIT_MASK;
1500         val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1501         pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1502 }
1503
1504 static void amd_enable_manual_tuning(struct pci_dev *pdev)
1505 {
1506         unsigned int val;
1507
1508         pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1509         val |= AMD_FIFO_PTR;
1510         pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1511 }
1512
1513 static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode)
1514 {
1515         struct sdhci_pci_slot *slot = sdhci_priv(host);
1516         struct pci_dev *pdev = slot->chip->pdev;
1517         u8 valid_win = 0;
1518         u8 valid_win_max = 0;
1519         u8 valid_win_end = 0;
1520         u8 ctrl, tune_around;
1521
1522         amd_tuning_reset(host);
1523
1524         for (tune_around = 0; tune_around < 12; tune_around++) {
1525                 amd_config_tuning_phase(pdev, tune_around);
1526
1527                 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1528                         valid_win = 0;
1529                         msleep(AMD_MSLEEP_DURATION);
1530                         ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1531                         sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1532                 } else if (++valid_win > valid_win_max) {
1533                         valid_win_max = valid_win;
1534                         valid_win_end = tune_around;
1535                 }
1536         }
1537
1538         if (!valid_win_max) {
1539                 dev_err(&pdev->dev, "no tuning point found\n");
1540                 return -EIO;
1541         }
1542
1543         amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1544
1545         amd_enable_manual_tuning(pdev);
1546
1547         host->mmc->retune_period = 0;
1548
1549         return 0;
1550 }
1551
1552 static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode)
1553 {
1554         struct sdhci_host *host = mmc_priv(mmc);
1555
1556         /* AMD requires custom HS200 tuning */
1557         if (host->timing == MMC_TIMING_MMC_HS200)
1558                 return amd_execute_tuning_hs200(host, opcode);
1559
1560         /* Otherwise perform standard SDHCI tuning */
1561         return sdhci_execute_tuning(mmc, opcode);
1562 }
1563
1564 static int amd_probe_slot(struct sdhci_pci_slot *slot)
1565 {
1566         struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
1567
1568         ops->execute_tuning = amd_execute_tuning;
1569
1570         return 0;
1571 }
1572
1573 static int amd_probe(struct sdhci_pci_chip *chip)
1574 {
1575         struct pci_dev  *smbus_dev;
1576         enum amd_chipset_gen gen;
1577
1578         smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1579                         PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1580         if (smbus_dev) {
1581                 gen = AMD_CHIPSET_BEFORE_ML;
1582         } else {
1583                 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1584                                 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1585                 if (smbus_dev) {
1586                         if (smbus_dev->revision < 0x51)
1587                                 gen = AMD_CHIPSET_CZ;
1588                         else
1589                                 gen = AMD_CHIPSET_NL;
1590                 } else {
1591                         gen = AMD_CHIPSET_UNKNOWN;
1592                 }
1593         }
1594
1595         if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1596                 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1597
1598         return 0;
1599 }
1600
1601 static u32 sdhci_read_present_state(struct sdhci_host *host)
1602 {
1603         return sdhci_readl(host, SDHCI_PRESENT_STATE);
1604 }
1605
1606 static void amd_sdhci_reset(struct sdhci_host *host, u8 mask)
1607 {
1608         struct sdhci_pci_slot *slot = sdhci_priv(host);
1609         struct pci_dev *pdev = slot->chip->pdev;
1610         u32 present_state;
1611
1612         /*
1613          * SDHC 0x7906 requires a hard reset to clear all internal state.
1614          * Otherwise it can get into a bad state where the DATA lines are always
1615          * read as zeros.
1616          */
1617         if (pdev->device == 0x7906 && (mask & SDHCI_RESET_ALL)) {
1618                 pci_clear_master(pdev);
1619
1620                 pci_save_state(pdev);
1621
1622                 pci_set_power_state(pdev, PCI_D3cold);
1623                 pr_debug("%s: power_state=%u\n", mmc_hostname(host->mmc),
1624                         pdev->current_state);
1625                 pci_set_power_state(pdev, PCI_D0);
1626
1627                 pci_restore_state(pdev);
1628
1629                 /*
1630                  * SDHCI_RESET_ALL says the card detect logic should not be
1631                  * reset, but since we need to reset the entire controller
1632                  * we should wait until the card detect logic has stabilized.
1633                  *
1634                  * This normally takes about 40ms.
1635                  */
1636                 readx_poll_timeout(
1637                         sdhci_read_present_state,
1638                         host,
1639                         present_state,
1640                         present_state & SDHCI_CD_STABLE,
1641                         10000,
1642                         100000
1643                 );
1644         }
1645
1646         return sdhci_reset(host, mask);
1647 }
1648
1649 static const struct sdhci_ops amd_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                          = amd_sdhci_reset,
1654         .set_uhs_signaling              = sdhci_set_uhs_signaling,
1655 };
1656
1657 static const struct sdhci_pci_fixes sdhci_amd = {
1658         .probe          = amd_probe,
1659         .ops            = &amd_sdhci_pci_ops,
1660         .probe_slot     = amd_probe_slot,
1661 };
1662
1663 static const struct pci_device_id pci_ids[] = {
1664         SDHCI_PCI_DEVICE(RICOH, R5C822,  ricoh),
1665         SDHCI_PCI_DEVICE(RICOH, R5C843,  ricoh_mmc),
1666         SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1667         SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1668         SDHCI_PCI_DEVICE(ENE, CB712_SD,   ene_712),
1669         SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1670         SDHCI_PCI_DEVICE(ENE, CB714_SD,   ene_714),
1671         SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1672         SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1673         SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD,  jmicron),
1674         SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1675         SDHCI_PCI_DEVICE(JMICRON, JMB388_SD,  jmicron),
1676         SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1677         SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1678         SDHCI_PCI_DEVICE(VIA, 95D0, via),
1679         SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1680         SDHCI_PCI_DEVICE(INTEL, QRK_SD,    intel_qrk),
1681         SDHCI_PCI_DEVICE(INTEL, MRST_SD0,  intel_mrst_hc0),
1682         SDHCI_PCI_DEVICE(INTEL, MRST_SD1,  intel_mrst_hc1_hc2),
1683         SDHCI_PCI_DEVICE(INTEL, MRST_SD2,  intel_mrst_hc1_hc2),
1684         SDHCI_PCI_DEVICE(INTEL, MFD_SD,    intel_mfd_sd),
1685         SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1686         SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1687         SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1688         SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1689         SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1690         SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1691         SDHCI_PCI_DEVICE(INTEL, BYT_EMMC,  intel_byt_emmc),
1692         SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1693         SDHCI_PCI_DEVICE(INTEL, BYT_SDIO,  intel_byt_sdio),
1694         SDHCI_PCI_DEVICE(INTEL, BYT_SD,    intel_byt_sd),
1695         SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1696         SDHCI_PCI_DEVICE(INTEL, BSW_EMMC,  intel_byt_emmc),
1697         SDHCI_PCI_DEVICE(INTEL, BSW_SDIO,  intel_byt_sdio),
1698         SDHCI_PCI_DEVICE(INTEL, BSW_SD,    intel_byt_sd),
1699         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1700         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1701         SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1702         SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1703         SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1704         SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1705         SDHCI_PCI_DEVICE(INTEL, SPT_EMMC,  intel_byt_emmc),
1706         SDHCI_PCI_DEVICE(INTEL, SPT_SDIO,  intel_byt_sdio),
1707         SDHCI_PCI_DEVICE(INTEL, SPT_SD,    intel_byt_sd),
1708         SDHCI_PCI_DEVICE(INTEL, DNV_EMMC,  intel_byt_emmc),
1709         SDHCI_PCI_DEVICE(INTEL, CDF_EMMC,  intel_glk_emmc),
1710         SDHCI_PCI_DEVICE(INTEL, BXT_EMMC,  intel_byt_emmc),
1711         SDHCI_PCI_DEVICE(INTEL, BXT_SDIO,  intel_byt_sdio),
1712         SDHCI_PCI_DEVICE(INTEL, BXT_SD,    intel_byt_sd),
1713         SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1714         SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1715         SDHCI_PCI_DEVICE(INTEL, BXTM_SD,   intel_byt_sd),
1716         SDHCI_PCI_DEVICE(INTEL, APL_EMMC,  intel_byt_emmc),
1717         SDHCI_PCI_DEVICE(INTEL, APL_SDIO,  intel_byt_sdio),
1718         SDHCI_PCI_DEVICE(INTEL, APL_SD,    intel_byt_sd),
1719         SDHCI_PCI_DEVICE(INTEL, GLK_EMMC,  intel_glk_emmc),
1720         SDHCI_PCI_DEVICE(INTEL, GLK_SDIO,  intel_byt_sdio),
1721         SDHCI_PCI_DEVICE(INTEL, GLK_SD,    intel_byt_sd),
1722         SDHCI_PCI_DEVICE(INTEL, CNP_EMMC,  intel_glk_emmc),
1723         SDHCI_PCI_DEVICE(INTEL, CNP_SD,    intel_byt_sd),
1724         SDHCI_PCI_DEVICE(INTEL, CNPH_SD,   intel_byt_sd),
1725         SDHCI_PCI_DEVICE(INTEL, ICP_EMMC,  intel_glk_emmc),
1726         SDHCI_PCI_DEVICE(INTEL, ICP_SD,    intel_byt_sd),
1727         SDHCI_PCI_DEVICE(INTEL, EHL_EMMC,  intel_glk_emmc),
1728         SDHCI_PCI_DEVICE(INTEL, EHL_SD,    intel_byt_sd),
1729         SDHCI_PCI_DEVICE(INTEL, CML_EMMC,  intel_glk_emmc),
1730         SDHCI_PCI_DEVICE(INTEL, CML_SD,    intel_byt_sd),
1731         SDHCI_PCI_DEVICE(INTEL, CMLH_SD,   intel_byt_sd),
1732         SDHCI_PCI_DEVICE(INTEL, JSL_EMMC,  intel_glk_emmc),
1733         SDHCI_PCI_DEVICE(INTEL, JSL_SD,    intel_byt_sd),
1734         SDHCI_PCI_DEVICE(O2, 8120,     o2),
1735         SDHCI_PCI_DEVICE(O2, 8220,     o2),
1736         SDHCI_PCI_DEVICE(O2, 8221,     o2),
1737         SDHCI_PCI_DEVICE(O2, 8320,     o2),
1738         SDHCI_PCI_DEVICE(O2, 8321,     o2),
1739         SDHCI_PCI_DEVICE(O2, FUJIN2,   o2),
1740         SDHCI_PCI_DEVICE(O2, SDS0,     o2),
1741         SDHCI_PCI_DEVICE(O2, SDS1,     o2),
1742         SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1743         SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1744         SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan),
1745         SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
1746         SDHCI_PCI_DEVICE(GLI, 9750, gl9750),
1747         SDHCI_PCI_DEVICE(GLI, 9755, gl9755),
1748         SDHCI_PCI_DEVICE(GLI, 9763E, gl9763e),
1749         SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1750         /* Generic SD host controller */
1751         {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1752         { /* end: all zeroes */ },
1753 };
1754
1755 MODULE_DEVICE_TABLE(pci, pci_ids);
1756
1757 /*****************************************************************************\
1758  *                                                                           *
1759  * SDHCI core callbacks                                                      *
1760  *                                                                           *
1761 \*****************************************************************************/
1762
1763 int sdhci_pci_enable_dma(struct sdhci_host *host)
1764 {
1765         struct sdhci_pci_slot *slot;
1766         struct pci_dev *pdev;
1767
1768         slot = sdhci_priv(host);
1769         pdev = slot->chip->pdev;
1770
1771         if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1772                 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1773                 (host->flags & SDHCI_USE_SDMA)) {
1774                 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1775                         "doesn't fully claim to support it.\n");
1776         }
1777
1778         pci_set_master(pdev);
1779
1780         return 0;
1781 }
1782
1783 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1784 {
1785         struct sdhci_pci_slot *slot = sdhci_priv(host);
1786         int rst_n_gpio = slot->rst_n_gpio;
1787
1788         if (!gpio_is_valid(rst_n_gpio))
1789                 return;
1790         gpio_set_value_cansleep(rst_n_gpio, 0);
1791         /* For eMMC, minimum is 1us but give it 10us for good measure */
1792         udelay(10);
1793         gpio_set_value_cansleep(rst_n_gpio, 1);
1794         /* For eMMC, minimum is 200us but give it 300us for good measure */
1795         usleep_range(300, 1000);
1796 }
1797
1798 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1799 {
1800         struct sdhci_pci_slot *slot = sdhci_priv(host);
1801
1802         if (slot->hw_reset)
1803                 slot->hw_reset(host);
1804 }
1805
1806 static const struct sdhci_ops sdhci_pci_ops = {
1807         .set_clock      = sdhci_set_clock,
1808         .enable_dma     = sdhci_pci_enable_dma,
1809         .set_bus_width  = sdhci_set_bus_width,
1810         .reset          = sdhci_reset,
1811         .set_uhs_signaling = sdhci_set_uhs_signaling,
1812         .hw_reset               = sdhci_pci_hw_reset,
1813 };
1814
1815 /*****************************************************************************\
1816  *                                                                           *
1817  * Suspend/resume                                                            *
1818  *                                                                           *
1819 \*****************************************************************************/
1820
1821 #ifdef CONFIG_PM_SLEEP
1822 static int sdhci_pci_suspend(struct device *dev)
1823 {
1824         struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1825
1826         if (!chip)
1827                 return 0;
1828
1829         if (chip->fixes && chip->fixes->suspend)
1830                 return chip->fixes->suspend(chip);
1831
1832         return sdhci_pci_suspend_host(chip);
1833 }
1834
1835 static int sdhci_pci_resume(struct device *dev)
1836 {
1837         struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1838
1839         if (!chip)
1840                 return 0;
1841
1842         if (chip->fixes && chip->fixes->resume)
1843                 return chip->fixes->resume(chip);
1844
1845         return sdhci_pci_resume_host(chip);
1846 }
1847 #endif
1848
1849 #ifdef CONFIG_PM
1850 static int sdhci_pci_runtime_suspend(struct device *dev)
1851 {
1852         struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1853
1854         if (!chip)
1855                 return 0;
1856
1857         if (chip->fixes && chip->fixes->runtime_suspend)
1858                 return chip->fixes->runtime_suspend(chip);
1859
1860         return sdhci_pci_runtime_suspend_host(chip);
1861 }
1862
1863 static int sdhci_pci_runtime_resume(struct device *dev)
1864 {
1865         struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
1866
1867         if (!chip)
1868                 return 0;
1869
1870         if (chip->fixes && chip->fixes->runtime_resume)
1871                 return chip->fixes->runtime_resume(chip);
1872
1873         return sdhci_pci_runtime_resume_host(chip);
1874 }
1875 #endif
1876
1877 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1878         SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1879         SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1880                         sdhci_pci_runtime_resume, NULL)
1881 };
1882
1883 /*****************************************************************************\
1884  *                                                                           *
1885  * Device probing/removal                                                    *
1886  *                                                                           *
1887 \*****************************************************************************/
1888
1889 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1890         struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1891         int slotno)
1892 {
1893         struct sdhci_pci_slot *slot;
1894         struct sdhci_host *host;
1895         int ret, bar = first_bar + slotno;
1896         size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
1897
1898         if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1899                 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1900                 return ERR_PTR(-ENODEV);
1901         }
1902
1903         if (pci_resource_len(pdev, bar) < 0x100) {
1904                 dev_err(&pdev->dev, "Invalid iomem size. You may "
1905                         "experience problems.\n");
1906         }
1907
1908         if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1909                 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1910                 return ERR_PTR(-ENODEV);
1911         }
1912
1913         if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1914                 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1915                 return ERR_PTR(-ENODEV);
1916         }
1917
1918         host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
1919         if (IS_ERR(host)) {
1920                 dev_err(&pdev->dev, "cannot allocate host\n");
1921                 return ERR_CAST(host);
1922         }
1923
1924         slot = sdhci_priv(host);
1925
1926         slot->chip = chip;
1927         slot->host = host;
1928         slot->rst_n_gpio = -EINVAL;
1929         slot->cd_gpio = -EINVAL;
1930         slot->cd_idx = -1;
1931
1932         /* Retrieve platform data if there is any */
1933         if (*sdhci_pci_get_data)
1934                 slot->data = sdhci_pci_get_data(pdev, slotno);
1935
1936         if (slot->data) {
1937                 if (slot->data->setup) {
1938                         ret = slot->data->setup(slot->data);
1939                         if (ret) {
1940                                 dev_err(&pdev->dev, "platform setup failed\n");
1941                                 goto free;
1942                         }
1943                 }
1944                 slot->rst_n_gpio = slot->data->rst_n_gpio;
1945                 slot->cd_gpio = slot->data->cd_gpio;
1946         }
1947
1948         host->hw_name = "PCI";
1949         host->ops = chip->fixes && chip->fixes->ops ?
1950                     chip->fixes->ops :
1951                     &sdhci_pci_ops;
1952         host->quirks = chip->quirks;
1953         host->quirks2 = chip->quirks2;
1954
1955         host->irq = pdev->irq;
1956
1957         ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1958         if (ret) {
1959                 dev_err(&pdev->dev, "cannot request region\n");
1960                 goto cleanup;
1961         }
1962
1963         host->ioaddr = pcim_iomap_table(pdev)[bar];
1964
1965         if (chip->fixes && chip->fixes->probe_slot) {
1966                 ret = chip->fixes->probe_slot(slot);
1967                 if (ret)
1968                         goto cleanup;
1969         }
1970
1971         if (gpio_is_valid(slot->rst_n_gpio)) {
1972                 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1973                         gpio_direction_output(slot->rst_n_gpio, 1);
1974                         slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1975                         slot->hw_reset = sdhci_pci_gpio_hw_reset;
1976                 } else {
1977                         dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1978                         slot->rst_n_gpio = -EINVAL;
1979                 }
1980         }
1981
1982         host->mmc->pm_caps = MMC_PM_KEEP_POWER;
1983         host->mmc->slotno = slotno;
1984         host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1985
1986         if (device_can_wakeup(&pdev->dev))
1987                 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
1988
1989         if (host->mmc->caps & MMC_CAP_CD_WAKE)
1990                 device_init_wakeup(&pdev->dev, true);
1991
1992         if (slot->cd_idx >= 0) {
1993                 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
1994                                            slot->cd_override_level, 0);
1995                 if (ret && ret != -EPROBE_DEFER)
1996                         ret = mmc_gpiod_request_cd(host->mmc, NULL,
1997                                                    slot->cd_idx,
1998                                                    slot->cd_override_level,
1999                                                    0);
2000                 if (ret == -EPROBE_DEFER)
2001                         goto remove;
2002
2003                 if (ret) {
2004                         dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
2005                         slot->cd_idx = -1;
2006                 }
2007         }
2008
2009         if (chip->fixes && chip->fixes->add_host)
2010                 ret = chip->fixes->add_host(slot);
2011         else
2012                 ret = sdhci_add_host(host);
2013         if (ret)
2014                 goto remove;
2015
2016         sdhci_pci_add_own_cd(slot);
2017
2018         /*
2019          * Check if the chip needs a separate GPIO for card detect to wake up
2020          * from runtime suspend.  If it is not there, don't allow runtime PM.
2021          * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
2022          */
2023         if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
2024             !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
2025                 chip->allow_runtime_pm = false;
2026
2027         return slot;
2028
2029 remove:
2030         if (chip->fixes && chip->fixes->remove_slot)
2031                 chip->fixes->remove_slot(slot, 0);
2032
2033 cleanup:
2034         if (slot->data && slot->data->cleanup)
2035                 slot->data->cleanup(slot->data);
2036
2037 free:
2038         sdhci_free_host(host);
2039
2040         return ERR_PTR(ret);
2041 }
2042
2043 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
2044 {
2045         int dead;
2046         u32 scratch;
2047
2048         sdhci_pci_remove_own_cd(slot);
2049
2050         dead = 0;
2051         scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
2052         if (scratch == (u32)-1)
2053                 dead = 1;
2054
2055         sdhci_remove_host(slot->host, dead);
2056
2057         if (slot->chip->fixes && slot->chip->fixes->remove_slot)
2058                 slot->chip->fixes->remove_slot(slot, dead);
2059
2060         if (slot->data && slot->data->cleanup)
2061                 slot->data->cleanup(slot->data);
2062
2063         sdhci_free_host(slot->host);
2064 }
2065
2066 static void sdhci_pci_runtime_pm_allow(struct device *dev)
2067 {
2068         pm_suspend_ignore_children(dev, 1);
2069         pm_runtime_set_autosuspend_delay(dev, 50);
2070         pm_runtime_use_autosuspend(dev);
2071         pm_runtime_allow(dev);
2072         /* Stay active until mmc core scans for a card */
2073         pm_runtime_put_noidle(dev);
2074 }
2075
2076 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
2077 {
2078         pm_runtime_forbid(dev);
2079         pm_runtime_get_noresume(dev);
2080 }
2081
2082 static int sdhci_pci_probe(struct pci_dev *pdev,
2083                                      const struct pci_device_id *ent)
2084 {
2085         struct sdhci_pci_chip *chip;
2086         struct sdhci_pci_slot *slot;
2087
2088         u8 slots, first_bar;
2089         int ret, i;
2090
2091         BUG_ON(pdev == NULL);
2092         BUG_ON(ent == NULL);
2093
2094         dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
2095                  (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
2096
2097         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
2098         if (ret)
2099                 return ret;
2100
2101         slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
2102         dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
2103
2104         BUG_ON(slots > MAX_SLOTS);
2105
2106         ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
2107         if (ret)
2108                 return ret;
2109
2110         first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
2111
2112         if (first_bar > 5) {
2113                 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
2114                 return -ENODEV;
2115         }
2116
2117         ret = pcim_enable_device(pdev);
2118         if (ret)
2119                 return ret;
2120
2121         chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
2122         if (!chip)
2123                 return -ENOMEM;
2124
2125         chip->pdev = pdev;
2126         chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
2127         if (chip->fixes) {
2128                 chip->quirks = chip->fixes->quirks;
2129                 chip->quirks2 = chip->fixes->quirks2;
2130                 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
2131         }
2132         chip->num_slots = slots;
2133         chip->pm_retune = true;
2134         chip->rpm_retune = true;
2135
2136         pci_set_drvdata(pdev, chip);
2137
2138         if (chip->fixes && chip->fixes->probe) {
2139                 ret = chip->fixes->probe(chip);
2140                 if (ret)
2141                         return ret;
2142         }
2143
2144         slots = chip->num_slots;        /* Quirk may have changed this */
2145
2146         for (i = 0; i < slots; i++) {
2147                 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
2148                 if (IS_ERR(slot)) {
2149                         for (i--; i >= 0; i--)
2150                                 sdhci_pci_remove_slot(chip->slots[i]);
2151                         return PTR_ERR(slot);
2152                 }
2153
2154                 chip->slots[i] = slot;
2155         }
2156
2157         if (chip->allow_runtime_pm)
2158                 sdhci_pci_runtime_pm_allow(&pdev->dev);
2159
2160         return 0;
2161 }
2162
2163 static void sdhci_pci_remove(struct pci_dev *pdev)
2164 {
2165         int i;
2166         struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2167
2168         if (chip->allow_runtime_pm)
2169                 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2170
2171         for (i = 0; i < chip->num_slots; i++)
2172                 sdhci_pci_remove_slot(chip->slots[i]);
2173 }
2174
2175 static struct pci_driver sdhci_driver = {
2176         .name =         "sdhci-pci",
2177         .id_table =     pci_ids,
2178         .probe =        sdhci_pci_probe,
2179         .remove =       sdhci_pci_remove,
2180         .driver =       {
2181                 .pm =   &sdhci_pci_pm_ops
2182         },
2183 };
2184
2185 module_pci_driver(sdhci_driver);
2186
2187 MODULE_AUTHOR("Pierre Ossman <[email protected]>");
2188 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2189 MODULE_LICENSE("GPL");
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