Loading...
Note: File does not exist in v3.15.
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/scatterlist.h>
21#include <linux/io.h>
22#include <linux/iopoll.h>
23#include <linux/gpio.h>
24#include <linux/gpio/machine.h>
25#include <linux/pm_runtime.h>
26#include <linux/pm_qos.h>
27#include <linux/debugfs.h>
28#include <linux/acpi.h>
29#include <linux/dmi.h>
30
31#include <linux/mmc/host.h>
32#include <linux/mmc/mmc.h>
33#include <linux/mmc/slot-gpio.h>
34
35#ifdef CONFIG_X86
36#include <asm/iosf_mbi.h>
37#endif
38
39#include "cqhci.h"
40
41#include "sdhci.h"
42#include "sdhci-cqhci.h"
43#include "sdhci-pci.h"
44#include "sdhci-uhs2.h"
45
46static void sdhci_pci_hw_reset(struct sdhci_host *host);
47
48#ifdef CONFIG_PM_SLEEP
49static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
50{
51 mmc_pm_flag_t pm_flags = 0;
52 bool cap_cd_wake = false;
53 int i;
54
55 for (i = 0; i < chip->num_slots; i++) {
56 struct sdhci_pci_slot *slot = chip->slots[i];
57
58 if (slot) {
59 pm_flags |= slot->host->mmc->pm_flags;
60 if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
61 cap_cd_wake = true;
62 }
63 }
64
65 if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
66 return device_wakeup_enable(&chip->pdev->dev);
67 else if (!cap_cd_wake)
68 device_wakeup_disable(&chip->pdev->dev);
69
70 return 0;
71}
72
73static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
74{
75 int i, ret;
76
77 sdhci_pci_init_wakeup(chip);
78
79 for (i = 0; i < chip->num_slots; i++) {
80 struct sdhci_pci_slot *slot = chip->slots[i];
81 struct sdhci_host *host;
82
83 if (!slot)
84 continue;
85
86 host = slot->host;
87
88 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
89 mmc_retune_needed(host->mmc);
90
91 ret = sdhci_suspend_host(host);
92 if (ret)
93 goto err_pci_suspend;
94
95 if (device_may_wakeup(&chip->pdev->dev))
96 mmc_gpio_set_cd_wake(host->mmc, true);
97 }
98
99 return 0;
100
101err_pci_suspend:
102 while (--i >= 0)
103 sdhci_resume_host(chip->slots[i]->host);
104 return ret;
105}
106
107int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
108{
109 struct sdhci_pci_slot *slot;
110 int i, ret;
111
112 for (i = 0; i < chip->num_slots; i++) {
113 slot = chip->slots[i];
114 if (!slot)
115 continue;
116
117 ret = sdhci_resume_host(slot->host);
118 if (ret)
119 return ret;
120
121 mmc_gpio_set_cd_wake(slot->host->mmc, false);
122 }
123
124 return 0;
125}
126
127static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
128{
129 int ret;
130
131 ret = cqhci_suspend(chip->slots[0]->host->mmc);
132 if (ret)
133 return ret;
134
135 return sdhci_pci_suspend_host(chip);
136}
137
138static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
139{
140 int ret;
141
142 ret = sdhci_pci_resume_host(chip);
143 if (ret)
144 return ret;
145
146 return cqhci_resume(chip->slots[0]->host->mmc);
147}
148#endif
149
150#ifdef CONFIG_PM
151static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
152{
153 struct sdhci_pci_slot *slot;
154 struct sdhci_host *host;
155 int i, ret;
156
157 for (i = 0; i < chip->num_slots; i++) {
158 slot = chip->slots[i];
159 if (!slot)
160 continue;
161
162 host = slot->host;
163
164 ret = sdhci_runtime_suspend_host(host);
165 if (ret)
166 goto err_pci_runtime_suspend;
167
168 if (chip->rpm_retune &&
169 host->tuning_mode != SDHCI_TUNING_MODE_3)
170 mmc_retune_needed(host->mmc);
171 }
172
173 return 0;
174
175err_pci_runtime_suspend:
176 while (--i >= 0)
177 sdhci_runtime_resume_host(chip->slots[i]->host, 0);
178 return ret;
179}
180
181static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
182{
183 struct sdhci_pci_slot *slot;
184 int i, ret;
185
186 for (i = 0; i < chip->num_slots; i++) {
187 slot = chip->slots[i];
188 if (!slot)
189 continue;
190
191 ret = sdhci_runtime_resume_host(slot->host, 0);
192 if (ret)
193 return ret;
194 }
195
196 return 0;
197}
198
199static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
200{
201 int ret;
202
203 ret = cqhci_suspend(chip->slots[0]->host->mmc);
204 if (ret)
205 return ret;
206
207 return sdhci_pci_runtime_suspend_host(chip);
208}
209
210static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
211{
212 int ret;
213
214 ret = sdhci_pci_runtime_resume_host(chip);
215 if (ret)
216 return ret;
217
218 return cqhci_resume(chip->slots[0]->host->mmc);
219}
220#endif
221
222static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
223{
224 int cmd_error = 0;
225 int data_error = 0;
226
227 if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
228 return intmask;
229
230 cqhci_irq(host->mmc, intmask, cmd_error, data_error);
231
232 return 0;
233}
234
235static void sdhci_pci_dumpregs(struct mmc_host *mmc)
236{
237 sdhci_dumpregs(mmc_priv(mmc));
238}
239
240/*****************************************************************************\
241 * *
242 * Hardware specific quirk handling *
243 * *
244\*****************************************************************************/
245
246static int ricoh_probe(struct sdhci_pci_chip *chip)
247{
248 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
249 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
250 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
251 return 0;
252}
253
254static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
255{
256 u32 caps =
257 FIELD_PREP(SDHCI_TIMEOUT_CLK_MASK, 0x21) |
258 FIELD_PREP(SDHCI_CLOCK_BASE_MASK, 0x21) |
259 SDHCI_TIMEOUT_CLK_UNIT |
260 SDHCI_CAN_VDD_330 |
261 SDHCI_CAN_DO_HISPD |
262 SDHCI_CAN_DO_SDMA;
263 u32 caps1 = 0;
264
265 __sdhci_read_caps(slot->host, NULL, &caps, &caps1);
266 return 0;
267}
268
269#ifdef CONFIG_PM_SLEEP
270static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
271{
272 /* Apply a delay to allow controller to settle */
273 /* Otherwise it becomes confused if card state changed
274 during suspend */
275 msleep(500);
276 return sdhci_pci_resume_host(chip);
277}
278#endif
279
280static const struct sdhci_pci_fixes sdhci_ricoh = {
281 .probe = ricoh_probe,
282 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
283 SDHCI_QUIRK_FORCE_DMA |
284 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
285};
286
287static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
288 .probe_slot = ricoh_mmc_probe_slot,
289#ifdef CONFIG_PM_SLEEP
290 .resume = ricoh_mmc_resume,
291#endif
292 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
293 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
294 SDHCI_QUIRK_NO_CARD_NO_RESET,
295};
296
297static void ene_714_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
298{
299 struct sdhci_host *host = mmc_priv(mmc);
300
301 sdhci_set_ios(mmc, ios);
302
303 /*
304 * Some (ENE) controllers misbehave on some ios operations,
305 * signalling timeout and CRC errors even on CMD0. Resetting
306 * it on each ios seems to solve the problem.
307 */
308 if (!(host->flags & SDHCI_DEVICE_DEAD))
309 sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
310}
311
312static int ene_714_probe_slot(struct sdhci_pci_slot *slot)
313{
314 slot->host->mmc_host_ops.set_ios = ene_714_set_ios;
315 return 0;
316}
317
318static const struct sdhci_pci_fixes sdhci_ene_712 = {
319 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
320 SDHCI_QUIRK_BROKEN_DMA,
321};
322
323static const struct sdhci_pci_fixes sdhci_ene_714 = {
324 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
325 SDHCI_QUIRK_BROKEN_DMA,
326 .probe_slot = ene_714_probe_slot,
327};
328
329static const struct sdhci_pci_fixes sdhci_cafe = {
330 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
331 SDHCI_QUIRK_NO_BUSY_IRQ |
332 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
333 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
334};
335
336static const struct sdhci_pci_fixes sdhci_intel_qrk = {
337 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
338};
339
340static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
341{
342 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
343 return 0;
344}
345
346/*
347 * ADMA operation is disabled for Moorestown platform due to
348 * hardware bugs.
349 */
350static int mrst_hc_probe(struct sdhci_pci_chip *chip)
351{
352 /*
353 * slots number is fixed here for MRST as SDIO3/5 are never used and
354 * have hardware bugs.
355 */
356 chip->num_slots = 1;
357 return 0;
358}
359
360static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
361{
362 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
363 return 0;
364}
365
366static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
367{
368 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
369 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
370 return 0;
371}
372
373static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
374{
375 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
376 return 0;
377}
378
379static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
380 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
381 .probe_slot = mrst_hc_probe_slot,
382};
383
384static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
385 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
386 .probe = mrst_hc_probe,
387};
388
389static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
390 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
391 .allow_runtime_pm = true,
392 .own_cd_for_runtime_pm = true,
393};
394
395static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
396 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
397 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
398 .allow_runtime_pm = true,
399 .probe_slot = mfd_sdio_probe_slot,
400};
401
402static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
403 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
404 .allow_runtime_pm = true,
405 .probe_slot = mfd_emmc_probe_slot,
406};
407
408static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
409 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
410 .probe_slot = pch_hc_probe_slot,
411};
412
413#ifdef CONFIG_X86
414
415#define BYT_IOSF_SCCEP 0x63
416#define BYT_IOSF_OCP_NETCTRL0 0x1078
417#define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
418
419static void byt_ocp_setting(struct pci_dev *pdev)
420{
421 u32 val = 0;
422
423 if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC &&
424 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO &&
425 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD &&
426 pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2)
427 return;
428
429 if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
430 &val)) {
431 dev_err(&pdev->dev, "%s read error\n", __func__);
432 return;
433 }
434
435 if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
436 return;
437
438 val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
439
440 if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
441 val)) {
442 dev_err(&pdev->dev, "%s write error\n", __func__);
443 return;
444 }
445
446 dev_dbg(&pdev->dev, "%s completed\n", __func__);
447}
448
449#else
450
451static inline void byt_ocp_setting(struct pci_dev *pdev)
452{
453}
454
455#endif
456
457enum {
458 INTEL_DSM_FNS = 0,
459 INTEL_DSM_V18_SWITCH = 3,
460 INTEL_DSM_V33_SWITCH = 4,
461 INTEL_DSM_DRV_STRENGTH = 9,
462 INTEL_DSM_D3_RETUNE = 10,
463};
464
465struct intel_host {
466 u32 dsm_fns;
467 int drv_strength;
468 bool d3_retune;
469 bool rpm_retune_ok;
470 bool needs_pwr_off;
471 u32 glk_rx_ctrl1;
472 u32 glk_tun_val;
473 u32 active_ltr;
474 u32 idle_ltr;
475};
476
477static const guid_t intel_dsm_guid =
478 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
479 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
480
481static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
482 unsigned int fn, u32 *result)
483{
484 union acpi_object *obj;
485 int err = 0;
486 size_t len;
487
488 obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL,
489 ACPI_TYPE_BUFFER);
490 if (!obj)
491 return -EOPNOTSUPP;
492
493 if (obj->buffer.length < 1) {
494 err = -EINVAL;
495 goto out;
496 }
497
498 len = min_t(size_t, obj->buffer.length, 4);
499
500 *result = 0;
501 memcpy(result, obj->buffer.pointer, len);
502out:
503 ACPI_FREE(obj);
504
505 return err;
506}
507
508static int intel_dsm(struct intel_host *intel_host, struct device *dev,
509 unsigned int fn, u32 *result)
510{
511 if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
512 return -EOPNOTSUPP;
513
514 return __intel_dsm(intel_host, dev, fn, result);
515}
516
517static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
518 struct mmc_host *mmc)
519{
520 int err;
521 u32 val;
522
523 intel_host->d3_retune = true;
524
525 err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
526 if (err) {
527 pr_debug("%s: DSM not supported, error %d\n",
528 mmc_hostname(mmc), err);
529 return;
530 }
531
532 pr_debug("%s: DSM function mask %#x\n",
533 mmc_hostname(mmc), intel_host->dsm_fns);
534
535 err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
536 intel_host->drv_strength = err ? 0 : val;
537
538 err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
539 intel_host->d3_retune = err ? true : !!val;
540}
541
542static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
543{
544 u8 reg;
545
546 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
547 reg |= 0x10;
548 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
549 /* For eMMC, minimum is 1us but give it 9us for good measure */
550 udelay(9);
551 reg &= ~0x10;
552 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
553 /* For eMMC, minimum is 200us but give it 300us for good measure */
554 usleep_range(300, 1000);
555}
556
557static int intel_select_drive_strength(struct mmc_card *card,
558 unsigned int max_dtr, int host_drv,
559 int card_drv, int *drv_type)
560{
561 struct sdhci_host *host = mmc_priv(card->host);
562 struct sdhci_pci_slot *slot = sdhci_priv(host);
563 struct intel_host *intel_host = sdhci_pci_priv(slot);
564
565 if (!(mmc_driver_type_mask(intel_host->drv_strength) & card_drv))
566 return 0;
567
568 return intel_host->drv_strength;
569}
570
571static int bxt_get_cd(struct mmc_host *mmc)
572{
573 int gpio_cd = mmc_gpio_get_cd(mmc);
574
575 if (!gpio_cd)
576 return 0;
577
578 return sdhci_get_cd_nogpio(mmc);
579}
580
581static int mrfld_get_cd(struct mmc_host *mmc)
582{
583 return sdhci_get_cd_nogpio(mmc);
584}
585
586#define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
587#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
588
589static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
590 unsigned short vdd)
591{
592 struct sdhci_pci_slot *slot = sdhci_priv(host);
593 struct intel_host *intel_host = sdhci_pci_priv(slot);
594 int cntr;
595 u8 reg;
596
597 /*
598 * Bus power may control card power, but a full reset still may not
599 * reset the power, whereas a direct write to SDHCI_POWER_CONTROL can.
600 * That might be needed to initialize correctly, if the card was left
601 * powered on previously.
602 */
603 if (intel_host->needs_pwr_off) {
604 intel_host->needs_pwr_off = false;
605 if (mode != MMC_POWER_OFF) {
606 sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
607 usleep_range(10000, 12500);
608 }
609 }
610
611 sdhci_set_power(host, mode, vdd);
612
613 if (mode == MMC_POWER_OFF)
614 return;
615
616 /*
617 * Bus power might not enable after D3 -> D0 transition due to the
618 * present state not yet having propagated. Retry for up to 2ms.
619 */
620 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
621 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
622 if (reg & SDHCI_POWER_ON)
623 break;
624 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
625 reg |= SDHCI_POWER_ON;
626 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
627 }
628}
629
630static void sdhci_intel_set_uhs_signaling(struct sdhci_host *host,
631 unsigned int timing)
632{
633 /* Set UHS timing to SDR25 for High Speed mode */
634 if (timing == MMC_TIMING_MMC_HS || timing == MMC_TIMING_SD_HS)
635 timing = MMC_TIMING_UHS_SDR25;
636 sdhci_set_uhs_signaling(host, timing);
637}
638
639#define INTEL_HS400_ES_REG 0x78
640#define INTEL_HS400_ES_BIT BIT(0)
641
642static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
643 struct mmc_ios *ios)
644{
645 struct sdhci_host *host = mmc_priv(mmc);
646 u32 val;
647
648 val = sdhci_readl(host, INTEL_HS400_ES_REG);
649 if (ios->enhanced_strobe)
650 val |= INTEL_HS400_ES_BIT;
651 else
652 val &= ~INTEL_HS400_ES_BIT;
653 sdhci_writel(host, val, INTEL_HS400_ES_REG);
654}
655
656static int intel_start_signal_voltage_switch(struct mmc_host *mmc,
657 struct mmc_ios *ios)
658{
659 struct device *dev = mmc_dev(mmc);
660 struct sdhci_host *host = mmc_priv(mmc);
661 struct sdhci_pci_slot *slot = sdhci_priv(host);
662 struct intel_host *intel_host = sdhci_pci_priv(slot);
663 unsigned int fn;
664 u32 result = 0;
665 int err;
666
667 err = sdhci_start_signal_voltage_switch(mmc, ios);
668 if (err)
669 return err;
670
671 switch (ios->signal_voltage) {
672 case MMC_SIGNAL_VOLTAGE_330:
673 fn = INTEL_DSM_V33_SWITCH;
674 break;
675 case MMC_SIGNAL_VOLTAGE_180:
676 fn = INTEL_DSM_V18_SWITCH;
677 break;
678 default:
679 return 0;
680 }
681
682 err = intel_dsm(intel_host, dev, fn, &result);
683 pr_debug("%s: %s DSM fn %u error %d result %u\n",
684 mmc_hostname(mmc), __func__, fn, err, result);
685
686 return 0;
687}
688
689static const struct sdhci_ops sdhci_intel_byt_ops = {
690 .set_clock = sdhci_set_clock,
691 .set_power = sdhci_intel_set_power,
692 .enable_dma = sdhci_pci_enable_dma,
693 .set_bus_width = sdhci_set_bus_width,
694 .reset = sdhci_reset,
695 .set_uhs_signaling = sdhci_intel_set_uhs_signaling,
696 .hw_reset = sdhci_pci_hw_reset,
697};
698
699static const struct sdhci_ops sdhci_intel_glk_ops = {
700 .set_clock = sdhci_set_clock,
701 .set_power = sdhci_intel_set_power,
702 .enable_dma = sdhci_pci_enable_dma,
703 .set_bus_width = sdhci_set_bus_width,
704 .reset = sdhci_and_cqhci_reset,
705 .set_uhs_signaling = sdhci_intel_set_uhs_signaling,
706 .hw_reset = sdhci_pci_hw_reset,
707 .irq = sdhci_cqhci_irq,
708};
709
710static void byt_read_dsm(struct sdhci_pci_slot *slot)
711{
712 struct intel_host *intel_host = sdhci_pci_priv(slot);
713 struct device *dev = &slot->chip->pdev->dev;
714 struct mmc_host *mmc = slot->host->mmc;
715
716 intel_dsm_init(intel_host, dev, mmc);
717 slot->chip->rpm_retune = intel_host->d3_retune;
718}
719
720static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
721{
722 int err = sdhci_execute_tuning(mmc, opcode);
723 struct sdhci_host *host = mmc_priv(mmc);
724
725 if (err)
726 return err;
727
728 /*
729 * Tuning can leave the IP in an active state (Buffer Read Enable bit
730 * set) which prevents the entry to low power states (i.e. S0i3). Data
731 * reset will clear it.
732 */
733 sdhci_reset(host, SDHCI_RESET_DATA);
734
735 return 0;
736}
737
738#define INTEL_ACTIVELTR 0x804
739#define INTEL_IDLELTR 0x808
740
741#define INTEL_LTR_REQ BIT(15)
742#define INTEL_LTR_SCALE_MASK GENMASK(11, 10)
743#define INTEL_LTR_SCALE_1US (2 << 10)
744#define INTEL_LTR_SCALE_32US (3 << 10)
745#define INTEL_LTR_VALUE_MASK GENMASK(9, 0)
746
747static void intel_cache_ltr(struct sdhci_pci_slot *slot)
748{
749 struct intel_host *intel_host = sdhci_pci_priv(slot);
750 struct sdhci_host *host = slot->host;
751
752 intel_host->active_ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
753 intel_host->idle_ltr = readl(host->ioaddr + INTEL_IDLELTR);
754}
755
756static void intel_ltr_set(struct device *dev, s32 val)
757{
758 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
759 struct sdhci_pci_slot *slot = chip->slots[0];
760 struct intel_host *intel_host = sdhci_pci_priv(slot);
761 struct sdhci_host *host = slot->host;
762 u32 ltr;
763
764 pm_runtime_get_sync(dev);
765
766 /*
767 * Program latency tolerance (LTR) accordingly what has been asked
768 * by the PM QoS layer or disable it in case we were passed
769 * negative value or PM_QOS_LATENCY_ANY.
770 */
771 ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
772
773 if (val == PM_QOS_LATENCY_ANY || val < 0) {
774 ltr &= ~INTEL_LTR_REQ;
775 } else {
776 ltr |= INTEL_LTR_REQ;
777 ltr &= ~INTEL_LTR_SCALE_MASK;
778 ltr &= ~INTEL_LTR_VALUE_MASK;
779
780 if (val > INTEL_LTR_VALUE_MASK) {
781 val >>= 5;
782 if (val > INTEL_LTR_VALUE_MASK)
783 val = INTEL_LTR_VALUE_MASK;
784 ltr |= INTEL_LTR_SCALE_32US | val;
785 } else {
786 ltr |= INTEL_LTR_SCALE_1US | val;
787 }
788 }
789
790 if (ltr == intel_host->active_ltr)
791 goto out;
792
793 writel(ltr, host->ioaddr + INTEL_ACTIVELTR);
794 writel(ltr, host->ioaddr + INTEL_IDLELTR);
795
796 /* Cache the values into lpss structure */
797 intel_cache_ltr(slot);
798out:
799 pm_runtime_put_autosuspend(dev);
800}
801
802static bool intel_use_ltr(struct sdhci_pci_chip *chip)
803{
804 switch (chip->pdev->device) {
805 case PCI_DEVICE_ID_INTEL_BYT_EMMC:
806 case PCI_DEVICE_ID_INTEL_BYT_EMMC2:
807 case PCI_DEVICE_ID_INTEL_BYT_SDIO:
808 case PCI_DEVICE_ID_INTEL_BYT_SD:
809 case PCI_DEVICE_ID_INTEL_BSW_EMMC:
810 case PCI_DEVICE_ID_INTEL_BSW_SDIO:
811 case PCI_DEVICE_ID_INTEL_BSW_SD:
812 return false;
813 default:
814 return true;
815 }
816}
817
818static void intel_ltr_expose(struct sdhci_pci_chip *chip)
819{
820 struct device *dev = &chip->pdev->dev;
821
822 if (!intel_use_ltr(chip))
823 return;
824
825 dev->power.set_latency_tolerance = intel_ltr_set;
826 dev_pm_qos_expose_latency_tolerance(dev);
827}
828
829static void intel_ltr_hide(struct sdhci_pci_chip *chip)
830{
831 struct device *dev = &chip->pdev->dev;
832
833 if (!intel_use_ltr(chip))
834 return;
835
836 dev_pm_qos_hide_latency_tolerance(dev);
837 dev->power.set_latency_tolerance = NULL;
838}
839
840static void byt_probe_slot(struct sdhci_pci_slot *slot)
841{
842 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
843 struct device *dev = &slot->chip->pdev->dev;
844 struct mmc_host *mmc = slot->host->mmc;
845
846 byt_read_dsm(slot);
847
848 byt_ocp_setting(slot->chip->pdev);
849
850 ops->execute_tuning = intel_execute_tuning;
851 ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
852
853 device_property_read_u32(dev, "max-frequency", &mmc->f_max);
854
855 if (!mmc->slotno) {
856 slot->chip->slots[mmc->slotno] = slot;
857 intel_ltr_expose(slot->chip);
858 }
859}
860
861static void byt_add_debugfs(struct sdhci_pci_slot *slot)
862{
863 struct intel_host *intel_host = sdhci_pci_priv(slot);
864 struct mmc_host *mmc = slot->host->mmc;
865 struct dentry *dir = mmc->debugfs_root;
866
867 if (!intel_use_ltr(slot->chip))
868 return;
869
870 debugfs_create_x32("active_ltr", 0444, dir, &intel_host->active_ltr);
871 debugfs_create_x32("idle_ltr", 0444, dir, &intel_host->idle_ltr);
872
873 intel_cache_ltr(slot);
874}
875
876static int byt_add_host(struct sdhci_pci_slot *slot)
877{
878 int ret = sdhci_add_host(slot->host);
879
880 if (!ret)
881 byt_add_debugfs(slot);
882 return ret;
883}
884
885static void byt_remove_slot(struct sdhci_pci_slot *slot, int dead)
886{
887 struct mmc_host *mmc = slot->host->mmc;
888
889 if (!mmc->slotno)
890 intel_ltr_hide(slot->chip);
891}
892
893static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
894{
895 byt_probe_slot(slot);
896 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
897 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
898 MMC_CAP_CMD_DURING_TFR |
899 MMC_CAP_WAIT_WHILE_BUSY;
900 slot->hw_reset = sdhci_pci_int_hw_reset;
901 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
902 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
903 slot->host->mmc_host_ops.select_drive_strength =
904 intel_select_drive_strength;
905 return 0;
906}
907
908static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
909{
910 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
911 (dmi_match(DMI_BIOS_VENDOR, "LENOVO") ||
912 dmi_match(DMI_SYS_VENDOR, "IRBIS"));
913}
914
915static bool jsl_broken_hs400es(struct sdhci_pci_slot *slot)
916{
917 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_JSL_EMMC &&
918 dmi_match(DMI_BIOS_VENDOR, "ASUSTeK COMPUTER INC.");
919}
920
921static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
922{
923 int ret = byt_emmc_probe_slot(slot);
924
925 if (!glk_broken_cqhci(slot))
926 slot->host->mmc->caps2 |= MMC_CAP2_CQE;
927
928 if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
929 if (!jsl_broken_hs400es(slot)) {
930 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES;
931 slot->host->mmc_host_ops.hs400_enhanced_strobe =
932 intel_hs400_enhanced_strobe;
933 }
934 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
935 }
936
937 return ret;
938}
939
940static const struct cqhci_host_ops glk_cqhci_ops = {
941 .enable = sdhci_cqe_enable,
942 .disable = sdhci_cqe_disable,
943 .dumpregs = sdhci_pci_dumpregs,
944};
945
946static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
947{
948 struct device *dev = &slot->chip->pdev->dev;
949 struct sdhci_host *host = slot->host;
950 struct cqhci_host *cq_host;
951 bool dma64;
952 int ret;
953
954 ret = sdhci_setup_host(host);
955 if (ret)
956 return ret;
957
958 cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
959 if (!cq_host) {
960 ret = -ENOMEM;
961 goto cleanup;
962 }
963
964 cq_host->mmio = host->ioaddr + 0x200;
965 cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
966 cq_host->ops = &glk_cqhci_ops;
967
968 dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
969 if (dma64)
970 cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
971
972 ret = cqhci_init(cq_host, host->mmc, dma64);
973 if (ret)
974 goto cleanup;
975
976 ret = __sdhci_add_host(host);
977 if (ret)
978 goto cleanup;
979
980 byt_add_debugfs(slot);
981
982 return 0;
983
984cleanup:
985 sdhci_cleanup_host(host);
986 return ret;
987}
988
989#ifdef CONFIG_PM
990#define GLK_RX_CTRL1 0x834
991#define GLK_TUN_VAL 0x840
992#define GLK_PATH_PLL GENMASK(13, 8)
993#define GLK_DLY GENMASK(6, 0)
994/* Workaround firmware failing to restore the tuning value */
995static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp)
996{
997 struct sdhci_pci_slot *slot = chip->slots[0];
998 struct intel_host *intel_host = sdhci_pci_priv(slot);
999 struct sdhci_host *host = slot->host;
1000 u32 glk_rx_ctrl1;
1001 u32 glk_tun_val;
1002 u32 dly;
1003
1004 if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc))
1005 return;
1006
1007 glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1);
1008 glk_tun_val = sdhci_readl(host, GLK_TUN_VAL);
1009
1010 if (susp) {
1011 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1;
1012 intel_host->glk_tun_val = glk_tun_val;
1013 return;
1014 }
1015
1016 if (!intel_host->glk_tun_val)
1017 return;
1018
1019 if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) {
1020 intel_host->rpm_retune_ok = true;
1021 return;
1022 }
1023
1024 dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) +
1025 (intel_host->glk_tun_val << 1));
1026 if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1))
1027 return;
1028
1029 glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly;
1030 sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1);
1031
1032 intel_host->rpm_retune_ok = true;
1033 chip->rpm_retune = true;
1034 mmc_retune_needed(host->mmc);
1035 pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc));
1036}
1037
1038static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp)
1039{
1040 if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
1041 !chip->rpm_retune)
1042 glk_rpm_retune_wa(chip, susp);
1043}
1044
1045static int glk_runtime_suspend(struct sdhci_pci_chip *chip)
1046{
1047 glk_rpm_retune_chk(chip, true);
1048
1049 return sdhci_cqhci_runtime_suspend(chip);
1050}
1051
1052static int glk_runtime_resume(struct sdhci_pci_chip *chip)
1053{
1054 glk_rpm_retune_chk(chip, false);
1055
1056 return sdhci_cqhci_runtime_resume(chip);
1057}
1058#endif
1059
1060#ifdef CONFIG_ACPI
1061static int ni_set_max_freq(struct sdhci_pci_slot *slot)
1062{
1063 acpi_status status;
1064 unsigned long long max_freq;
1065
1066 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
1067 "MXFQ", NULL, &max_freq);
1068 if (ACPI_FAILURE(status)) {
1069 dev_err(&slot->chip->pdev->dev,
1070 "MXFQ not found in acpi table\n");
1071 return -EINVAL;
1072 }
1073
1074 slot->host->mmc->f_max = max_freq * 1000000;
1075
1076 return 0;
1077}
1078#else
1079static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
1080{
1081 return 0;
1082}
1083#endif
1084
1085static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
1086{
1087 int err;
1088
1089 byt_probe_slot(slot);
1090
1091 err = ni_set_max_freq(slot);
1092 if (err)
1093 return err;
1094
1095 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
1096 MMC_CAP_WAIT_WHILE_BUSY;
1097 return 0;
1098}
1099
1100static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
1101{
1102 byt_probe_slot(slot);
1103 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
1104 MMC_CAP_WAIT_WHILE_BUSY;
1105 return 0;
1106}
1107
1108static void byt_needs_pwr_off(struct sdhci_pci_slot *slot)
1109{
1110 struct intel_host *intel_host = sdhci_pci_priv(slot);
1111 u8 reg = sdhci_readb(slot->host, SDHCI_POWER_CONTROL);
1112
1113 intel_host->needs_pwr_off = reg & SDHCI_POWER_ON;
1114}
1115
1116static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
1117{
1118 byt_probe_slot(slot);
1119 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
1120 MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
1121 slot->cd_idx = 0;
1122 slot->cd_override_level = true;
1123 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
1124 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
1125 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
1126 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
1127 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
1128
1129 if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI &&
1130 slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3)
1131 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V;
1132
1133 byt_needs_pwr_off(slot);
1134
1135 return 0;
1136}
1137
1138#ifdef CONFIG_PM_SLEEP
1139
1140static int byt_resume(struct sdhci_pci_chip *chip)
1141{
1142 byt_ocp_setting(chip->pdev);
1143
1144 return sdhci_pci_resume_host(chip);
1145}
1146
1147#endif
1148
1149#ifdef CONFIG_PM
1150
1151static int byt_runtime_resume(struct sdhci_pci_chip *chip)
1152{
1153 byt_ocp_setting(chip->pdev);
1154
1155 return sdhci_pci_runtime_resume_host(chip);
1156}
1157
1158#endif
1159
1160static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
1161#ifdef CONFIG_PM_SLEEP
1162 .resume = byt_resume,
1163#endif
1164#ifdef CONFIG_PM
1165 .runtime_resume = byt_runtime_resume,
1166#endif
1167 .allow_runtime_pm = true,
1168 .probe_slot = byt_emmc_probe_slot,
1169 .add_host = byt_add_host,
1170 .remove_slot = byt_remove_slot,
1171 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1172 SDHCI_QUIRK_NO_LED,
1173 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1174 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1175 SDHCI_QUIRK2_STOP_WITH_TC,
1176 .ops = &sdhci_intel_byt_ops,
1177 .priv_size = sizeof(struct intel_host),
1178};
1179
1180static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
1181 .allow_runtime_pm = true,
1182 .probe_slot = glk_emmc_probe_slot,
1183 .add_host = glk_emmc_add_host,
1184 .remove_slot = byt_remove_slot,
1185#ifdef CONFIG_PM_SLEEP
1186 .suspend = sdhci_cqhci_suspend,
1187 .resume = sdhci_cqhci_resume,
1188#endif
1189#ifdef CONFIG_PM
1190 .runtime_suspend = glk_runtime_suspend,
1191 .runtime_resume = glk_runtime_resume,
1192#endif
1193 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1194 SDHCI_QUIRK_NO_LED,
1195 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1196 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
1197 SDHCI_QUIRK2_STOP_WITH_TC,
1198 .ops = &sdhci_intel_glk_ops,
1199 .priv_size = sizeof(struct intel_host),
1200};
1201
1202static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
1203#ifdef CONFIG_PM_SLEEP
1204 .resume = byt_resume,
1205#endif
1206#ifdef CONFIG_PM
1207 .runtime_resume = byt_runtime_resume,
1208#endif
1209 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1210 SDHCI_QUIRK_NO_LED,
1211 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1212 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1213 .allow_runtime_pm = true,
1214 .probe_slot = ni_byt_sdio_probe_slot,
1215 .add_host = byt_add_host,
1216 .remove_slot = byt_remove_slot,
1217 .ops = &sdhci_intel_byt_ops,
1218 .priv_size = sizeof(struct intel_host),
1219};
1220
1221static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
1222#ifdef CONFIG_PM_SLEEP
1223 .resume = byt_resume,
1224#endif
1225#ifdef CONFIG_PM
1226 .runtime_resume = byt_runtime_resume,
1227#endif
1228 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1229 SDHCI_QUIRK_NO_LED,
1230 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
1231 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1232 .allow_runtime_pm = true,
1233 .probe_slot = byt_sdio_probe_slot,
1234 .add_host = byt_add_host,
1235 .remove_slot = byt_remove_slot,
1236 .ops = &sdhci_intel_byt_ops,
1237 .priv_size = sizeof(struct intel_host),
1238};
1239
1240/* DMI quirks for devices with missing or broken CD GPIO info */
1241static const struct gpiod_lookup_table vexia_edu_atla10_cd_gpios = {
1242 .dev_id = "0000:00:12.0",
1243 .table = {
1244 GPIO_LOOKUP("INT33FC:00", 38, "cd", GPIO_ACTIVE_HIGH),
1245 { }
1246 },
1247};
1248
1249static const struct dmi_system_id sdhci_intel_byt_cd_gpio_override[] = {
1250 {
1251 /* Vexia Edu Atla 10 tablet 9V version */
1252 .matches = {
1253 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
1254 DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
1255 /* Above strings are too generic, also match on BIOS date */
1256 DMI_MATCH(DMI_BIOS_DATE, "08/25/2014"),
1257 },
1258 .driver_data = (void *)&vexia_edu_atla10_cd_gpios,
1259 },
1260 { }
1261};
1262
1263static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
1264#ifdef CONFIG_PM_SLEEP
1265 .resume = byt_resume,
1266#endif
1267#ifdef CONFIG_PM
1268 .runtime_resume = byt_runtime_resume,
1269#endif
1270 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
1271 SDHCI_QUIRK_NO_LED,
1272 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
1273 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1274 SDHCI_QUIRK2_STOP_WITH_TC,
1275 .allow_runtime_pm = true,
1276 .own_cd_for_runtime_pm = true,
1277 .probe_slot = byt_sd_probe_slot,
1278 .add_host = byt_add_host,
1279 .remove_slot = byt_remove_slot,
1280 .ops = &sdhci_intel_byt_ops,
1281 .cd_gpio_override = sdhci_intel_byt_cd_gpio_override,
1282 .priv_size = sizeof(struct intel_host),
1283};
1284
1285/* Define Host controllers for Intel Merrifield platform */
1286#define INTEL_MRFLD_EMMC_0 0
1287#define INTEL_MRFLD_EMMC_1 1
1288#define INTEL_MRFLD_SD 2
1289#define INTEL_MRFLD_SDIO 3
1290
1291#ifdef CONFIG_ACPI
1292static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
1293{
1294 struct acpi_device *device;
1295
1296 device = ACPI_COMPANION(&slot->chip->pdev->dev);
1297 if (device)
1298 acpi_device_fix_up_power_extended(device);
1299}
1300#else
1301static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
1302#endif
1303
1304static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
1305{
1306 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
1307
1308 switch (func) {
1309 case INTEL_MRFLD_EMMC_0:
1310 case INTEL_MRFLD_EMMC_1:
1311 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1312 MMC_CAP_8_BIT_DATA |
1313 MMC_CAP_1_8V_DDR;
1314 break;
1315 case INTEL_MRFLD_SD:
1316 slot->cd_idx = 0;
1317 slot->cd_override_level = true;
1318 /*
1319 * There are two PCB designs of SD card slot with the opposite
1320 * card detection sense. Quirk this out by ignoring GPIO state
1321 * completely in the custom ->get_cd() callback.
1322 */
1323 slot->host->mmc_host_ops.get_cd = mrfld_get_cd;
1324 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
1325 break;
1326 case INTEL_MRFLD_SDIO:
1327 /* Advertise 2.0v for compatibility with the SDIO card's OCR */
1328 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195;
1329 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1330 MMC_CAP_POWER_OFF_CARD;
1331 break;
1332 default:
1333 return -ENODEV;
1334 }
1335
1336 intel_mrfld_mmc_fix_up_power_slot(slot);
1337 return 0;
1338}
1339
1340static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
1341 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1342 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
1343 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1344 .allow_runtime_pm = true,
1345 .probe_slot = intel_mrfld_mmc_probe_slot,
1346};
1347
1348#define JMB388_SAMPLE_COUNT 5
1349
1350static int jmicron_jmb388_get_ro(struct mmc_host *mmc)
1351{
1352 int i, ro_count;
1353
1354 ro_count = 0;
1355 for (i = 0; i < JMB388_SAMPLE_COUNT; i++) {
1356 if (sdhci_get_ro(mmc) > 0) {
1357 if (++ro_count > JMB388_SAMPLE_COUNT / 2)
1358 return 1;
1359 }
1360 msleep(30);
1361 }
1362 return 0;
1363}
1364
1365static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
1366{
1367 u8 scratch;
1368 int ret;
1369
1370 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
1371 if (ret)
1372 goto fail;
1373
1374 /*
1375 * Turn PMOS on [bit 0], set over current detection to 2.4 V
1376 * [bit 1:2] and enable over current debouncing [bit 6].
1377 */
1378 if (on)
1379 scratch |= 0x47;
1380 else
1381 scratch &= ~0x47;
1382
1383 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
1384
1385fail:
1386 return pcibios_err_to_errno(ret);
1387}
1388
1389static int jmicron_probe(struct sdhci_pci_chip *chip)
1390{
1391 int ret;
1392 u16 mmcdev = 0;
1393
1394 if (chip->pdev->revision == 0) {
1395 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
1396 SDHCI_QUIRK_32BIT_DMA_SIZE |
1397 SDHCI_QUIRK_32BIT_ADMA_SIZE |
1398 SDHCI_QUIRK_RESET_AFTER_REQUEST |
1399 SDHCI_QUIRK_BROKEN_SMALL_PIO;
1400 }
1401
1402 /*
1403 * JMicron chips can have two interfaces to the same hardware
1404 * in order to work around limitations in Microsoft's driver.
1405 * We need to make sure we only bind to one of them.
1406 *
1407 * This code assumes two things:
1408 *
1409 * 1. The PCI code adds subfunctions in order.
1410 *
1411 * 2. The MMC interface has a lower subfunction number
1412 * than the SD interface.
1413 */
1414 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
1415 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
1416 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
1417 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
1418
1419 if (mmcdev) {
1420 struct pci_dev *sd_dev;
1421
1422 sd_dev = NULL;
1423 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
1424 mmcdev, sd_dev)) != NULL) {
1425 if ((PCI_SLOT(chip->pdev->devfn) ==
1426 PCI_SLOT(sd_dev->devfn)) &&
1427 (chip->pdev->bus == sd_dev->bus))
1428 break;
1429 }
1430
1431 if (sd_dev) {
1432 pci_dev_put(sd_dev);
1433 dev_info(&chip->pdev->dev, "Refusing to bind to "
1434 "secondary interface.\n");
1435 return -ENODEV;
1436 }
1437 }
1438
1439 /*
1440 * JMicron chips need a bit of a nudge to enable the power
1441 * output pins.
1442 */
1443 ret = jmicron_pmos(chip, 1);
1444 if (ret) {
1445 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1446 return ret;
1447 }
1448
1449 return 0;
1450}
1451
1452static void jmicron_enable_mmc(struct sdhci_host *host, int on)
1453{
1454 u8 scratch;
1455
1456 scratch = readb(host->ioaddr + 0xC0);
1457
1458 if (on)
1459 scratch |= 0x01;
1460 else
1461 scratch &= ~0x01;
1462
1463 writeb(scratch, host->ioaddr + 0xC0);
1464}
1465
1466static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
1467{
1468 if (slot->chip->pdev->revision == 0) {
1469 u16 version;
1470
1471 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
1472 version = (version & SDHCI_VENDOR_VER_MASK) >>
1473 SDHCI_VENDOR_VER_SHIFT;
1474
1475 /*
1476 * Older versions of the chip have lots of nasty glitches
1477 * in the ADMA engine. It's best just to avoid it
1478 * completely.
1479 */
1480 if (version < 0xAC)
1481 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
1482 }
1483
1484 /* JM388 MMC doesn't support 1.8V while SD supports it */
1485 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1486 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
1487 MMC_VDD_29_30 | MMC_VDD_30_31 |
1488 MMC_VDD_165_195; /* allow 1.8V */
1489 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
1490 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
1491 }
1492
1493 /*
1494 * The secondary interface requires a bit set to get the
1495 * interrupts.
1496 */
1497 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1498 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1499 jmicron_enable_mmc(slot->host, 1);
1500
1501 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
1502
1503 /* Handle unstable RO-detection on JM388 chips */
1504 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
1505 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1506 slot->host->mmc_host_ops.get_ro = jmicron_jmb388_get_ro;
1507
1508 return 0;
1509}
1510
1511static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
1512{
1513 if (dead)
1514 return;
1515
1516 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1517 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1518 jmicron_enable_mmc(slot->host, 0);
1519}
1520
1521#ifdef CONFIG_PM_SLEEP
1522static int jmicron_suspend(struct sdhci_pci_chip *chip)
1523{
1524 int i, ret;
1525
1526 ret = sdhci_pci_suspend_host(chip);
1527 if (ret)
1528 return ret;
1529
1530 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1531 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1532 for (i = 0; i < chip->num_slots; i++)
1533 jmicron_enable_mmc(chip->slots[i]->host, 0);
1534 }
1535
1536 return 0;
1537}
1538
1539static int jmicron_resume(struct sdhci_pci_chip *chip)
1540{
1541 int ret, i;
1542
1543 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1544 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1545 for (i = 0; i < chip->num_slots; i++)
1546 jmicron_enable_mmc(chip->slots[i]->host, 1);
1547 }
1548
1549 ret = jmicron_pmos(chip, 1);
1550 if (ret) {
1551 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1552 return ret;
1553 }
1554
1555 return sdhci_pci_resume_host(chip);
1556}
1557#endif
1558
1559static const struct sdhci_pci_fixes sdhci_jmicron = {
1560 .probe = jmicron_probe,
1561
1562 .probe_slot = jmicron_probe_slot,
1563 .remove_slot = jmicron_remove_slot,
1564
1565#ifdef CONFIG_PM_SLEEP
1566 .suspend = jmicron_suspend,
1567 .resume = jmicron_resume,
1568#endif
1569};
1570
1571/* SysKonnect CardBus2SDIO extra registers */
1572#define SYSKT_CTRL 0x200
1573#define SYSKT_RDFIFO_STAT 0x204
1574#define SYSKT_WRFIFO_STAT 0x208
1575#define SYSKT_POWER_DATA 0x20c
1576#define SYSKT_POWER_330 0xef
1577#define SYSKT_POWER_300 0xf8
1578#define SYSKT_POWER_184 0xcc
1579#define SYSKT_POWER_CMD 0x20d
1580#define SYSKT_POWER_START (1 << 7)
1581#define SYSKT_POWER_STATUS 0x20e
1582#define SYSKT_POWER_STATUS_OK (1 << 0)
1583#define SYSKT_BOARD_REV 0x210
1584#define SYSKT_CHIP_REV 0x211
1585#define SYSKT_CONF_DATA 0x212
1586#define SYSKT_CONF_DATA_1V8 (1 << 2)
1587#define SYSKT_CONF_DATA_2V5 (1 << 1)
1588#define SYSKT_CONF_DATA_3V3 (1 << 0)
1589
1590static int syskt_probe(struct sdhci_pci_chip *chip)
1591{
1592 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1593 chip->pdev->class &= ~0x0000FF;
1594 chip->pdev->class |= PCI_SDHCI_IFDMA;
1595 }
1596 return 0;
1597}
1598
1599static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1600{
1601 int tm, ps;
1602
1603 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1604 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1605 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1606 "board rev %d.%d, chip rev %d.%d\n",
1607 board_rev >> 4, board_rev & 0xf,
1608 chip_rev >> 4, chip_rev & 0xf);
1609 if (chip_rev >= 0x20)
1610 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1611
1612 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1613 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1614 udelay(50);
1615 tm = 10; /* Wait max 1 ms */
1616 do {
1617 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1618 if (ps & SYSKT_POWER_STATUS_OK)
1619 break;
1620 udelay(100);
1621 } while (--tm);
1622 if (!tm) {
1623 dev_err(&slot->chip->pdev->dev,
1624 "power regulator never stabilized");
1625 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1626 return -ENODEV;
1627 }
1628
1629 return 0;
1630}
1631
1632static const struct sdhci_pci_fixes sdhci_syskt = {
1633 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1634 .probe = syskt_probe,
1635 .probe_slot = syskt_probe_slot,
1636};
1637
1638static int via_probe(struct sdhci_pci_chip *chip)
1639{
1640 if (chip->pdev->revision == 0x10)
1641 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1642
1643 return 0;
1644}
1645
1646static const struct sdhci_pci_fixes sdhci_via = {
1647 .probe = via_probe,
1648};
1649
1650static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1651{
1652 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1653 return 0;
1654}
1655
1656static const struct sdhci_pci_fixes sdhci_rtsx = {
1657 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1658 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1659 SDHCI_QUIRK2_BROKEN_DDR50,
1660 .probe_slot = rtsx_probe_slot,
1661};
1662
1663/*AMD chipset generation*/
1664enum amd_chipset_gen {
1665 AMD_CHIPSET_BEFORE_ML,
1666 AMD_CHIPSET_CZ,
1667 AMD_CHIPSET_NL,
1668 AMD_CHIPSET_UNKNOWN,
1669};
1670
1671/* AMD registers */
1672#define AMD_SD_AUTO_PATTERN 0xB8
1673#define AMD_MSLEEP_DURATION 4
1674#define AMD_SD_MISC_CONTROL 0xD0
1675#define AMD_MAX_TUNE_VALUE 0x0B
1676#define AMD_AUTO_TUNE_SEL 0x10800
1677#define AMD_FIFO_PTR 0x30
1678#define AMD_BIT_MASK 0x1F
1679
1680static void amd_tuning_reset(struct sdhci_host *host)
1681{
1682 unsigned int val;
1683
1684 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1685 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1686 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1687
1688 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1689 val &= ~SDHCI_CTRL_EXEC_TUNING;
1690 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1691}
1692
1693static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1694{
1695 unsigned int val;
1696
1697 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1698 val &= ~AMD_BIT_MASK;
1699 val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1700 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1701}
1702
1703static void amd_enable_manual_tuning(struct pci_dev *pdev)
1704{
1705 unsigned int val;
1706
1707 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1708 val |= AMD_FIFO_PTR;
1709 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1710}
1711
1712static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode)
1713{
1714 struct sdhci_pci_slot *slot = sdhci_priv(host);
1715 struct pci_dev *pdev = slot->chip->pdev;
1716 u8 valid_win = 0;
1717 u8 valid_win_max = 0;
1718 u8 valid_win_end = 0;
1719 u8 ctrl, tune_around;
1720
1721 amd_tuning_reset(host);
1722
1723 for (tune_around = 0; tune_around < 12; tune_around++) {
1724 amd_config_tuning_phase(pdev, tune_around);
1725
1726 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1727 valid_win = 0;
1728 msleep(AMD_MSLEEP_DURATION);
1729 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1730 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1731 } else if (++valid_win > valid_win_max) {
1732 valid_win_max = valid_win;
1733 valid_win_end = tune_around;
1734 }
1735 }
1736
1737 if (!valid_win_max) {
1738 dev_err(&pdev->dev, "no tuning point found\n");
1739 return -EIO;
1740 }
1741
1742 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1743
1744 amd_enable_manual_tuning(pdev);
1745
1746 host->mmc->retune_period = 0;
1747
1748 return 0;
1749}
1750
1751static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode)
1752{
1753 struct sdhci_host *host = mmc_priv(mmc);
1754
1755 /* AMD requires custom HS200 tuning */
1756 if (host->timing == MMC_TIMING_MMC_HS200)
1757 return amd_execute_tuning_hs200(host, opcode);
1758
1759 /* Otherwise perform standard SDHCI tuning */
1760 return sdhci_execute_tuning(mmc, opcode);
1761}
1762
1763static int amd_probe_slot(struct sdhci_pci_slot *slot)
1764{
1765 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
1766
1767 ops->execute_tuning = amd_execute_tuning;
1768
1769 return 0;
1770}
1771
1772static int amd_probe(struct sdhci_pci_chip *chip)
1773{
1774 struct pci_dev *smbus_dev;
1775 enum amd_chipset_gen gen;
1776
1777 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1778 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1779 if (smbus_dev) {
1780 gen = AMD_CHIPSET_BEFORE_ML;
1781 } else {
1782 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1783 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1784 if (smbus_dev) {
1785 if (smbus_dev->revision < 0x51)
1786 gen = AMD_CHIPSET_CZ;
1787 else
1788 gen = AMD_CHIPSET_NL;
1789 } else {
1790 gen = AMD_CHIPSET_UNKNOWN;
1791 }
1792 }
1793
1794 pci_dev_put(smbus_dev);
1795
1796 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1797 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1798
1799 return 0;
1800}
1801
1802static u32 sdhci_read_present_state(struct sdhci_host *host)
1803{
1804 return sdhci_readl(host, SDHCI_PRESENT_STATE);
1805}
1806
1807static void amd_sdhci_reset(struct sdhci_host *host, u8 mask)
1808{
1809 struct sdhci_pci_slot *slot = sdhci_priv(host);
1810 struct pci_dev *pdev = slot->chip->pdev;
1811 u32 present_state;
1812
1813 /*
1814 * SDHC 0x7906 requires a hard reset to clear all internal state.
1815 * Otherwise it can get into a bad state where the DATA lines are always
1816 * read as zeros.
1817 */
1818 if (pdev->device == 0x7906 && (mask & SDHCI_RESET_ALL)) {
1819 pci_clear_master(pdev);
1820
1821 pci_save_state(pdev);
1822
1823 pci_set_power_state(pdev, PCI_D3cold);
1824 pr_debug("%s: power_state=%u\n", mmc_hostname(host->mmc),
1825 pdev->current_state);
1826 pci_set_power_state(pdev, PCI_D0);
1827
1828 pci_restore_state(pdev);
1829
1830 /*
1831 * SDHCI_RESET_ALL says the card detect logic should not be
1832 * reset, but since we need to reset the entire controller
1833 * we should wait until the card detect logic has stabilized.
1834 *
1835 * This normally takes about 40ms.
1836 */
1837 readx_poll_timeout(
1838 sdhci_read_present_state,
1839 host,
1840 present_state,
1841 present_state & SDHCI_CD_STABLE,
1842 10000,
1843 100000
1844 );
1845 }
1846
1847 return sdhci_reset(host, mask);
1848}
1849
1850static const struct sdhci_ops amd_sdhci_pci_ops = {
1851 .set_clock = sdhci_set_clock,
1852 .enable_dma = sdhci_pci_enable_dma,
1853 .set_bus_width = sdhci_set_bus_width,
1854 .reset = amd_sdhci_reset,
1855 .set_uhs_signaling = sdhci_set_uhs_signaling,
1856};
1857
1858static const struct sdhci_pci_fixes sdhci_amd = {
1859 .probe = amd_probe,
1860 .ops = &amd_sdhci_pci_ops,
1861 .probe_slot = amd_probe_slot,
1862};
1863
1864static const struct pci_device_id pci_ids[] = {
1865 SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh),
1866 SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc),
1867 SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1868 SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1869 SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712),
1870 SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1871 SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714),
1872 SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1873 SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1874 SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron),
1875 SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1876 SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron),
1877 SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1878 SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1879 SDHCI_PCI_DEVICE(VIA, 95D0, via),
1880 SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1881 SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk),
1882 SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0),
1883 SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2),
1884 SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2),
1885 SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd),
1886 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1887 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1888 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1889 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1890 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1891 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1892 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc),
1893 SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1894 SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio),
1895 SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd),
1896 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1897 SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc),
1898 SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio),
1899 SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd),
1900 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1901 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1902 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1903 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1904 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1905 SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1906 SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc),
1907 SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio),
1908 SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd),
1909 SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc),
1910 SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc),
1911 SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc),
1912 SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio),
1913 SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd),
1914 SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1915 SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1916 SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd),
1917 SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc),
1918 SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio),
1919 SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd),
1920 SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc),
1921 SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio),
1922 SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd),
1923 SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc),
1924 SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd),
1925 SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
1926 SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc),
1927 SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd),
1928 SDHCI_PCI_DEVICE(INTEL, EHL_EMMC, intel_glk_emmc),
1929 SDHCI_PCI_DEVICE(INTEL, EHL_SD, intel_byt_sd),
1930 SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc),
1931 SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd),
1932 SDHCI_PCI_DEVICE(INTEL, CMLH_SD, intel_byt_sd),
1933 SDHCI_PCI_DEVICE(INTEL, JSL_EMMC, intel_glk_emmc),
1934 SDHCI_PCI_DEVICE(INTEL, JSL_SD, intel_byt_sd),
1935 SDHCI_PCI_DEVICE(INTEL, LKF_EMMC, intel_glk_emmc),
1936 SDHCI_PCI_DEVICE(INTEL, LKF_SD, intel_byt_sd),
1937 SDHCI_PCI_DEVICE(INTEL, ADL_EMMC, intel_glk_emmc),
1938 SDHCI_PCI_DEVICE(O2, 8120, o2),
1939 SDHCI_PCI_DEVICE(O2, 8220, o2),
1940 SDHCI_PCI_DEVICE(O2, 8221, o2),
1941 SDHCI_PCI_DEVICE(O2, 8320, o2),
1942 SDHCI_PCI_DEVICE(O2, 8321, o2),
1943 SDHCI_PCI_DEVICE(O2, FUJIN2, o2),
1944 SDHCI_PCI_DEVICE(O2, SDS0, o2),
1945 SDHCI_PCI_DEVICE(O2, SDS1, o2),
1946 SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1947 SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1948 SDHCI_PCI_DEVICE(O2, GG8_9860, o2),
1949 SDHCI_PCI_DEVICE(O2, GG8_9861, o2),
1950 SDHCI_PCI_DEVICE(O2, GG8_9862, o2),
1951 SDHCI_PCI_DEVICE(O2, GG8_9863, o2),
1952 SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan),
1953 SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
1954 SDHCI_PCI_DEVICE(GLI, 9750, gl9750),
1955 SDHCI_PCI_DEVICE(GLI, 9755, gl9755),
1956 SDHCI_PCI_DEVICE(GLI, 9763E, gl9763e),
1957 SDHCI_PCI_DEVICE(GLI, 9767, gl9767),
1958 SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1959 /* Generic SD host controller */
1960 {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1961 { /* end: all zeroes */ },
1962};
1963
1964MODULE_DEVICE_TABLE(pci, pci_ids);
1965
1966/*****************************************************************************\
1967 * *
1968 * SDHCI core callbacks *
1969 * *
1970\*****************************************************************************/
1971
1972int sdhci_pci_enable_dma(struct sdhci_host *host)
1973{
1974 struct sdhci_pci_slot *slot;
1975 struct pci_dev *pdev;
1976
1977 slot = sdhci_priv(host);
1978 pdev = slot->chip->pdev;
1979
1980 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1981 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1982 (host->flags & SDHCI_USE_SDMA)) {
1983 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1984 "doesn't fully claim to support it.\n");
1985 }
1986
1987 pci_set_master(pdev);
1988
1989 return 0;
1990}
1991
1992static void sdhci_pci_hw_reset(struct sdhci_host *host)
1993{
1994 struct sdhci_pci_slot *slot = sdhci_priv(host);
1995
1996 if (slot->hw_reset)
1997 slot->hw_reset(host);
1998}
1999
2000static const struct sdhci_ops sdhci_pci_ops = {
2001 .set_clock = sdhci_set_clock,
2002 .enable_dma = sdhci_pci_enable_dma,
2003 .set_bus_width = sdhci_set_bus_width,
2004 .reset = sdhci_reset,
2005 .set_uhs_signaling = sdhci_set_uhs_signaling,
2006 .hw_reset = sdhci_pci_hw_reset,
2007};
2008
2009/*****************************************************************************\
2010 * *
2011 * Suspend/resume *
2012 * *
2013\*****************************************************************************/
2014
2015#ifdef CONFIG_PM_SLEEP
2016static int sdhci_pci_suspend(struct device *dev)
2017{
2018 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
2019
2020 if (!chip)
2021 return 0;
2022
2023 if (chip->fixes && chip->fixes->suspend)
2024 return chip->fixes->suspend(chip);
2025
2026 return sdhci_pci_suspend_host(chip);
2027}
2028
2029static int sdhci_pci_resume(struct device *dev)
2030{
2031 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
2032
2033 if (!chip)
2034 return 0;
2035
2036 if (chip->fixes && chip->fixes->resume)
2037 return chip->fixes->resume(chip);
2038
2039 return sdhci_pci_resume_host(chip);
2040}
2041#endif
2042
2043#ifdef CONFIG_PM
2044static int sdhci_pci_runtime_suspend(struct device *dev)
2045{
2046 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
2047
2048 if (!chip)
2049 return 0;
2050
2051 if (chip->fixes && chip->fixes->runtime_suspend)
2052 return chip->fixes->runtime_suspend(chip);
2053
2054 return sdhci_pci_runtime_suspend_host(chip);
2055}
2056
2057static int sdhci_pci_runtime_resume(struct device *dev)
2058{
2059 struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
2060
2061 if (!chip)
2062 return 0;
2063
2064 if (chip->fixes && chip->fixes->runtime_resume)
2065 return chip->fixes->runtime_resume(chip);
2066
2067 return sdhci_pci_runtime_resume_host(chip);
2068}
2069#endif
2070
2071static const struct dev_pm_ops sdhci_pci_pm_ops = {
2072 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
2073 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
2074 sdhci_pci_runtime_resume, NULL)
2075};
2076
2077/*****************************************************************************\
2078 * *
2079 * Device probing/removal *
2080 * *
2081\*****************************************************************************/
2082
2083static struct gpiod_lookup_table *sdhci_pci_add_gpio_lookup_table(
2084 struct sdhci_pci_chip *chip)
2085{
2086 struct gpiod_lookup_table *cd_gpio_lookup_table;
2087 const struct dmi_system_id *dmi_id = NULL;
2088 size_t count;
2089
2090 if (chip->fixes && chip->fixes->cd_gpio_override)
2091 dmi_id = dmi_first_match(chip->fixes->cd_gpio_override);
2092
2093 if (!dmi_id)
2094 return NULL;
2095
2096 cd_gpio_lookup_table = dmi_id->driver_data;
2097 for (count = 0; cd_gpio_lookup_table->table[count].key; count++)
2098 ;
2099
2100 cd_gpio_lookup_table = kmemdup(dmi_id->driver_data,
2101 /* count + 1 terminating entry */
2102 struct_size(cd_gpio_lookup_table, table, count + 1),
2103 GFP_KERNEL);
2104 if (!cd_gpio_lookup_table)
2105 return ERR_PTR(-ENOMEM);
2106
2107 gpiod_add_lookup_table(cd_gpio_lookup_table);
2108 return cd_gpio_lookup_table;
2109}
2110
2111static void sdhci_pci_remove_gpio_lookup_table(struct gpiod_lookup_table *lookup_table)
2112{
2113 if (lookup_table) {
2114 gpiod_remove_lookup_table(lookup_table);
2115 kfree(lookup_table);
2116 }
2117}
2118
2119static struct sdhci_pci_slot *sdhci_pci_probe_slot(
2120 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
2121 int slotno)
2122{
2123 struct sdhci_pci_slot *slot;
2124 struct sdhci_host *host;
2125 int ret, bar = first_bar + slotno;
2126 size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
2127
2128 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
2129 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
2130 return ERR_PTR(-ENODEV);
2131 }
2132
2133 if (pci_resource_len(pdev, bar) < 0x100) {
2134 dev_err(&pdev->dev, "Invalid iomem size. You may "
2135 "experience problems.\n");
2136 }
2137
2138 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
2139 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
2140 return ERR_PTR(-ENODEV);
2141 }
2142
2143 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
2144 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
2145 return ERR_PTR(-ENODEV);
2146 }
2147
2148 host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
2149 if (IS_ERR(host)) {
2150 dev_err(&pdev->dev, "cannot allocate host\n");
2151 return ERR_CAST(host);
2152 }
2153
2154 slot = sdhci_priv(host);
2155
2156 slot->chip = chip;
2157 slot->host = host;
2158 slot->cd_idx = -1;
2159
2160 host->hw_name = "PCI";
2161 host->ops = chip->fixes && chip->fixes->ops ?
2162 chip->fixes->ops :
2163 &sdhci_pci_ops;
2164 host->quirks = chip->quirks;
2165 host->quirks2 = chip->quirks2;
2166
2167 host->irq = pdev->irq;
2168
2169 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
2170 if (ret) {
2171 dev_err(&pdev->dev, "cannot request region\n");
2172 goto cleanup;
2173 }
2174
2175 host->ioaddr = pcim_iomap_table(pdev)[bar];
2176
2177 if (chip->fixes && chip->fixes->probe_slot) {
2178 ret = chip->fixes->probe_slot(slot);
2179 if (ret)
2180 goto cleanup;
2181 }
2182
2183 host->mmc->pm_caps = MMC_PM_KEEP_POWER;
2184 host->mmc->slotno = slotno;
2185 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
2186
2187 if (device_can_wakeup(&pdev->dev))
2188 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
2189
2190 if (host->mmc->caps & MMC_CAP_CD_WAKE)
2191 device_init_wakeup(&pdev->dev, true);
2192
2193 if (slot->cd_idx >= 0) {
2194 struct gpiod_lookup_table *cd_gpio_lookup_table;
2195
2196 cd_gpio_lookup_table = sdhci_pci_add_gpio_lookup_table(chip);
2197 if (IS_ERR(cd_gpio_lookup_table)) {
2198 ret = PTR_ERR(cd_gpio_lookup_table);
2199 goto remove;
2200 }
2201
2202 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
2203 slot->cd_override_level, 0);
2204
2205 sdhci_pci_remove_gpio_lookup_table(cd_gpio_lookup_table);
2206
2207 if (ret && ret != -EPROBE_DEFER)
2208 ret = mmc_gpiod_request_cd(host->mmc, NULL,
2209 slot->cd_idx,
2210 slot->cd_override_level,
2211 0);
2212 if (ret == -EPROBE_DEFER)
2213 goto remove;
2214
2215 if (ret) {
2216 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
2217 slot->cd_idx = -1;
2218 }
2219 }
2220
2221 if (chip->fixes && chip->fixes->add_host)
2222 ret = chip->fixes->add_host(slot);
2223 else
2224 ret = sdhci_add_host(host);
2225 if (ret)
2226 goto remove;
2227
2228 /*
2229 * Check if the chip needs a separate GPIO for card detect to wake up
2230 * from runtime suspend. If it is not there, don't allow runtime PM.
2231 */
2232 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && slot->cd_idx < 0)
2233 chip->allow_runtime_pm = false;
2234
2235 return slot;
2236
2237remove:
2238 if (chip->fixes && chip->fixes->remove_slot)
2239 chip->fixes->remove_slot(slot, 0);
2240
2241cleanup:
2242 sdhci_free_host(host);
2243
2244 return ERR_PTR(ret);
2245}
2246
2247static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
2248{
2249 int dead;
2250 u32 scratch;
2251
2252 dead = 0;
2253 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
2254 if (scratch == (u32)-1)
2255 dead = 1;
2256
2257 if (slot->chip->fixes && slot->chip->fixes->remove_host)
2258 slot->chip->fixes->remove_host(slot, dead);
2259 else
2260 sdhci_remove_host(slot->host, dead);
2261
2262 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
2263 slot->chip->fixes->remove_slot(slot, dead);
2264
2265 sdhci_free_host(slot->host);
2266}
2267
2268int sdhci_pci_uhs2_add_host(struct sdhci_pci_slot *slot)
2269{
2270 return sdhci_uhs2_add_host(slot->host);
2271}
2272
2273void sdhci_pci_uhs2_remove_host(struct sdhci_pci_slot *slot, int dead)
2274{
2275 sdhci_uhs2_remove_host(slot->host, dead);
2276}
2277
2278static void sdhci_pci_runtime_pm_allow(struct device *dev)
2279{
2280 pm_suspend_ignore_children(dev, 1);
2281 pm_runtime_set_autosuspend_delay(dev, 50);
2282 pm_runtime_use_autosuspend(dev);
2283 pm_runtime_allow(dev);
2284 /* Stay active until mmc core scans for a card */
2285 pm_runtime_put_noidle(dev);
2286}
2287
2288static void sdhci_pci_runtime_pm_forbid(struct device *dev)
2289{
2290 pm_runtime_forbid(dev);
2291 pm_runtime_get_noresume(dev);
2292}
2293
2294static int sdhci_pci_probe(struct pci_dev *pdev,
2295 const struct pci_device_id *ent)
2296{
2297 struct sdhci_pci_chip *chip;
2298 struct sdhci_pci_slot *slot;
2299
2300 u8 slots, first_bar;
2301 int ret, i;
2302
2303 BUG_ON(pdev == NULL);
2304 BUG_ON(ent == NULL);
2305
2306 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
2307 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
2308
2309 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
2310 if (ret)
2311 return pcibios_err_to_errno(ret);
2312
2313 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
2314 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
2315
2316 BUG_ON(slots > MAX_SLOTS);
2317
2318 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
2319 if (ret)
2320 return pcibios_err_to_errno(ret);
2321
2322 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
2323
2324 if (first_bar > 5) {
2325 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
2326 return -ENODEV;
2327 }
2328
2329 ret = pcim_enable_device(pdev);
2330 if (ret)
2331 return ret;
2332
2333 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
2334 if (!chip)
2335 return -ENOMEM;
2336
2337 chip->pdev = pdev;
2338 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
2339 if (chip->fixes) {
2340 chip->quirks = chip->fixes->quirks;
2341 chip->quirks2 = chip->fixes->quirks2;
2342 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
2343 }
2344 chip->num_slots = slots;
2345 chip->pm_retune = true;
2346 chip->rpm_retune = true;
2347
2348 pci_set_drvdata(pdev, chip);
2349
2350 if (chip->fixes && chip->fixes->probe) {
2351 ret = chip->fixes->probe(chip);
2352 if (ret)
2353 return ret;
2354 }
2355
2356 slots = chip->num_slots; /* Quirk may have changed this */
2357
2358 for (i = 0; i < slots; i++) {
2359 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
2360 if (IS_ERR(slot)) {
2361 for (i--; i >= 0; i--)
2362 sdhci_pci_remove_slot(chip->slots[i]);
2363 return PTR_ERR(slot);
2364 }
2365
2366 chip->slots[i] = slot;
2367 }
2368
2369 if (chip->allow_runtime_pm)
2370 sdhci_pci_runtime_pm_allow(&pdev->dev);
2371
2372 return 0;
2373}
2374
2375static void sdhci_pci_remove(struct pci_dev *pdev)
2376{
2377 int i;
2378 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2379
2380 if (chip->allow_runtime_pm)
2381 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2382
2383 for (i = 0; i < chip->num_slots; i++)
2384 sdhci_pci_remove_slot(chip->slots[i]);
2385}
2386
2387static struct pci_driver sdhci_driver = {
2388 .name = "sdhci-pci",
2389 .id_table = pci_ids,
2390 .probe = sdhci_pci_probe,
2391 .remove = sdhci_pci_remove,
2392 .driver = {
2393 .pm = &sdhci_pci_pm_ops,
2394 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
2395 },
2396};
2397
2398module_pci_driver(sdhci_driver);
2399
2400MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
2401MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2402MODULE_LICENSE("GPL");