1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
10 * Thanks to the following companies for their support:
12 * - JMicron (hardware and technical support)
15 #include <linux/bitfield.h>
16 #include <linux/string.h>
17 #include <linux/delay.h>
18 #include <linux/highmem.h>
19 #include <linux/module.h>
20 #include <linux/pci.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/slab.h>
23 #include <linux/device.h>
24 #include <linux/mmc/host.h>
25 #include <linux/mmc/mmc.h>
26 #include <linux/scatterlist.h>
28 #include <linux/gpio.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/mmc/slot-gpio.h>
31 #include <linux/mmc/sdhci-pci-data.h>
32 #include <linux/acpi.h>
37 #include "sdhci-pci.h"
39 static void sdhci_pci_hw_reset(struct sdhci_host *host);
41 #ifdef CONFIG_PM_SLEEP
42 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
44 mmc_pm_flag_t pm_flags = 0;
45 bool cap_cd_wake = false;
48 for (i = 0; i < chip->num_slots; i++) {
49 struct sdhci_pci_slot *slot = chip->slots[i];
52 pm_flags |= slot->host->mmc->pm_flags;
53 if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
58 if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
59 return device_wakeup_enable(&chip->pdev->dev);
60 else if (!cap_cd_wake)
61 return device_wakeup_disable(&chip->pdev->dev);
66 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
70 sdhci_pci_init_wakeup(chip);
72 for (i = 0; i < chip->num_slots; i++) {
73 struct sdhci_pci_slot *slot = chip->slots[i];
74 struct sdhci_host *host;
81 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
82 mmc_retune_needed(host->mmc);
84 ret = sdhci_suspend_host(host);
88 if (device_may_wakeup(&chip->pdev->dev))
89 mmc_gpio_set_cd_wake(host->mmc, true);
96 sdhci_resume_host(chip->slots[i]->host);
100 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
102 struct sdhci_pci_slot *slot;
105 for (i = 0; i < chip->num_slots; i++) {
106 slot = chip->slots[i];
110 ret = sdhci_resume_host(slot->host);
114 mmc_gpio_set_cd_wake(slot->host->mmc, false);
120 static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip)
124 ret = cqhci_suspend(chip->slots[0]->host->mmc);
128 return sdhci_pci_suspend_host(chip);
131 static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip)
135 ret = sdhci_pci_resume_host(chip);
139 return cqhci_resume(chip->slots[0]->host->mmc);
144 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
146 struct sdhci_pci_slot *slot;
147 struct sdhci_host *host;
150 for (i = 0; i < chip->num_slots; i++) {
151 slot = chip->slots[i];
157 ret = sdhci_runtime_suspend_host(host);
159 goto err_pci_runtime_suspend;
161 if (chip->rpm_retune &&
162 host->tuning_mode != SDHCI_TUNING_MODE_3)
163 mmc_retune_needed(host->mmc);
168 err_pci_runtime_suspend:
170 sdhci_runtime_resume_host(chip->slots[i]->host);
174 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
176 struct sdhci_pci_slot *slot;
179 for (i = 0; i < chip->num_slots; i++) {
180 slot = chip->slots[i];
184 ret = sdhci_runtime_resume_host(slot->host);
192 static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip)
196 ret = cqhci_suspend(chip->slots[0]->host->mmc);
200 return sdhci_pci_runtime_suspend_host(chip);
203 static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip)
207 ret = sdhci_pci_runtime_resume_host(chip);
211 return cqhci_resume(chip->slots[0]->host->mmc);
215 static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask)
220 if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
223 cqhci_irq(host->mmc, intmask, cmd_error, data_error);
228 static void sdhci_pci_dumpregs(struct mmc_host *mmc)
230 sdhci_dumpregs(mmc_priv(mmc));
233 /*****************************************************************************\
235 * Hardware specific quirk handling *
237 \*****************************************************************************/
239 static int ricoh_probe(struct sdhci_pci_chip *chip)
241 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
242 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
243 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
247 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
250 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
251 & SDHCI_TIMEOUT_CLK_MASK) |
253 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
254 & SDHCI_CLOCK_BASE_MASK) |
256 SDHCI_TIMEOUT_CLK_UNIT |
263 #ifdef CONFIG_PM_SLEEP
264 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
266 /* Apply a delay to allow controller to settle */
267 /* Otherwise it becomes confused if card state changed
270 return sdhci_pci_resume_host(chip);
274 static const struct sdhci_pci_fixes sdhci_ricoh = {
275 .probe = ricoh_probe,
276 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
277 SDHCI_QUIRK_FORCE_DMA |
278 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
281 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
282 .probe_slot = ricoh_mmc_probe_slot,
283 #ifdef CONFIG_PM_SLEEP
284 .resume = ricoh_mmc_resume,
286 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
287 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
288 SDHCI_QUIRK_NO_CARD_NO_RESET |
289 SDHCI_QUIRK_MISSING_CAPS
292 static const struct sdhci_pci_fixes sdhci_ene_712 = {
293 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
294 SDHCI_QUIRK_BROKEN_DMA,
297 static const struct sdhci_pci_fixes sdhci_ene_714 = {
298 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
299 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
300 SDHCI_QUIRK_BROKEN_DMA,
303 static const struct sdhci_pci_fixes sdhci_cafe = {
304 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
305 SDHCI_QUIRK_NO_BUSY_IRQ |
306 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
307 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
310 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
311 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
314 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
316 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
321 * ADMA operation is disabled for Moorestown platform due to
324 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
327 * slots number is fixed here for MRST as SDIO3/5 are never used and
328 * have hardware bugs.
334 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
336 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
342 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
344 struct sdhci_pci_slot *slot = dev_id;
345 struct sdhci_host *host = slot->host;
347 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
351 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
353 int err, irq, gpio = slot->cd_gpio;
355 slot->cd_gpio = -EINVAL;
356 slot->cd_irq = -EINVAL;
358 if (!gpio_is_valid(gpio))
361 err = devm_gpio_request(&slot->chip->pdev->dev, gpio, "sd_cd");
365 err = gpio_direction_input(gpio);
369 irq = gpio_to_irq(gpio);
373 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
374 IRQF_TRIGGER_FALLING, "sd_cd", slot);
378 slot->cd_gpio = gpio;
384 devm_gpio_free(&slot->chip->pdev->dev, gpio);
386 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
389 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
391 if (slot->cd_irq >= 0)
392 free_irq(slot->cd_irq, slot);
397 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
401 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
407 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
409 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
410 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC;
414 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
416 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
420 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
421 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
422 .probe_slot = mrst_hc_probe_slot,
425 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
426 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
427 .probe = mrst_hc_probe,
430 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
431 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
432 .allow_runtime_pm = true,
433 .own_cd_for_runtime_pm = true,
436 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
437 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
438 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
439 .allow_runtime_pm = true,
440 .probe_slot = mfd_sdio_probe_slot,
443 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
444 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
445 .allow_runtime_pm = true,
446 .probe_slot = mfd_emmc_probe_slot,
449 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
450 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
451 .probe_slot = pch_hc_probe_slot,
456 INTEL_DSM_V18_SWITCH = 3,
457 INTEL_DSM_V33_SWITCH = 4,
458 INTEL_DSM_DRV_STRENGTH = 9,
459 INTEL_DSM_D3_RETUNE = 10,
471 static const guid_t intel_dsm_guid =
472 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F,
473 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61);
475 static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
476 unsigned int fn, u32 *result)
478 union acpi_object *obj;
482 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
486 if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
491 len = min_t(size_t, obj->buffer.length, 4);
494 memcpy(result, obj->buffer.pointer, len);
501 static int intel_dsm(struct intel_host *intel_host, struct device *dev,
502 unsigned int fn, u32 *result)
504 if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
507 return __intel_dsm(intel_host, dev, fn, result);
510 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
511 struct mmc_host *mmc)
516 intel_host->d3_retune = true;
518 err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
520 pr_debug("%s: DSM not supported, error %d\n",
521 mmc_hostname(mmc), err);
525 pr_debug("%s: DSM function mask %#x\n",
526 mmc_hostname(mmc), intel_host->dsm_fns);
528 err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
529 intel_host->drv_strength = err ? 0 : val;
531 err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
532 intel_host->d3_retune = err ? true : !!val;
535 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
539 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
541 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
542 /* For eMMC, minimum is 1us but give it 9us for good measure */
545 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
546 /* For eMMC, minimum is 200us but give it 300us for good measure */
547 usleep_range(300, 1000);
550 static int intel_select_drive_strength(struct mmc_card *card,
551 unsigned int max_dtr, int host_drv,
552 int card_drv, int *drv_type)
554 struct sdhci_host *host = mmc_priv(card->host);
555 struct sdhci_pci_slot *slot = sdhci_priv(host);
556 struct intel_host *intel_host = sdhci_pci_priv(slot);
558 return intel_host->drv_strength;
561 static int bxt_get_cd(struct mmc_host *mmc)
563 int gpio_cd = mmc_gpio_get_cd(mmc);
564 struct sdhci_host *host = mmc_priv(mmc);
571 spin_lock_irqsave(&host->lock, flags);
573 if (host->flags & SDHCI_DEVICE_DEAD)
576 ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
578 spin_unlock_irqrestore(&host->lock, flags);
583 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
584 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
586 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
592 sdhci_set_power(host, mode, vdd);
594 if (mode == MMC_POWER_OFF)
598 * Bus power might not enable after D3 -> D0 transition due to the
599 * present state not yet having propagated. Retry for up to 2ms.
601 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
602 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
603 if (reg & SDHCI_POWER_ON)
605 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
606 reg |= SDHCI_POWER_ON;
607 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
611 #define INTEL_HS400_ES_REG 0x78
612 #define INTEL_HS400_ES_BIT BIT(0)
614 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc,
617 struct sdhci_host *host = mmc_priv(mmc);
620 val = sdhci_readl(host, INTEL_HS400_ES_REG);
621 if (ios->enhanced_strobe)
622 val |= INTEL_HS400_ES_BIT;
624 val &= ~INTEL_HS400_ES_BIT;
625 sdhci_writel(host, val, INTEL_HS400_ES_REG);
628 static int intel_start_signal_voltage_switch(struct mmc_host *mmc,
631 struct device *dev = mmc_dev(mmc);
632 struct sdhci_host *host = mmc_priv(mmc);
633 struct sdhci_pci_slot *slot = sdhci_priv(host);
634 struct intel_host *intel_host = sdhci_pci_priv(slot);
639 err = sdhci_start_signal_voltage_switch(mmc, ios);
643 switch (ios->signal_voltage) {
644 case MMC_SIGNAL_VOLTAGE_330:
645 fn = INTEL_DSM_V33_SWITCH;
647 case MMC_SIGNAL_VOLTAGE_180:
648 fn = INTEL_DSM_V18_SWITCH;
654 err = intel_dsm(intel_host, dev, fn, &result);
655 pr_debug("%s: %s DSM fn %u error %d result %u\n",
656 mmc_hostname(mmc), __func__, fn, err, result);
661 static const struct sdhci_ops sdhci_intel_byt_ops = {
662 .set_clock = sdhci_set_clock,
663 .set_power = sdhci_intel_set_power,
664 .enable_dma = sdhci_pci_enable_dma,
665 .set_bus_width = sdhci_set_bus_width,
666 .reset = sdhci_reset,
667 .set_uhs_signaling = sdhci_set_uhs_signaling,
668 .hw_reset = sdhci_pci_hw_reset,
671 static const struct sdhci_ops sdhci_intel_glk_ops = {
672 .set_clock = sdhci_set_clock,
673 .set_power = sdhci_intel_set_power,
674 .enable_dma = sdhci_pci_enable_dma,
675 .set_bus_width = sdhci_set_bus_width,
676 .reset = sdhci_reset,
677 .set_uhs_signaling = sdhci_set_uhs_signaling,
678 .hw_reset = sdhci_pci_hw_reset,
679 .irq = sdhci_cqhci_irq,
682 static void byt_read_dsm(struct sdhci_pci_slot *slot)
684 struct intel_host *intel_host = sdhci_pci_priv(slot);
685 struct device *dev = &slot->chip->pdev->dev;
686 struct mmc_host *mmc = slot->host->mmc;
688 intel_dsm_init(intel_host, dev, mmc);
689 slot->chip->rpm_retune = intel_host->d3_retune;
692 static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
694 int err = sdhci_execute_tuning(mmc, opcode);
695 struct sdhci_host *host = mmc_priv(mmc);
701 * Tuning can leave the IP in an active state (Buffer Read Enable bit
702 * set) which prevents the entry to low power states (i.e. S0i3). Data
703 * reset will clear it.
705 sdhci_reset(host, SDHCI_RESET_DATA);
710 static void byt_probe_slot(struct sdhci_pci_slot *slot)
712 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
716 ops->execute_tuning = intel_execute_tuning;
717 ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
720 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
722 byt_probe_slot(slot);
723 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
724 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
725 MMC_CAP_CMD_DURING_TFR |
726 MMC_CAP_WAIT_WHILE_BUSY;
727 slot->hw_reset = sdhci_pci_int_hw_reset;
728 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
729 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
730 slot->host->mmc_host_ops.select_drive_strength =
731 intel_select_drive_strength;
735 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)
737 int ret = byt_emmc_probe_slot(slot);
739 slot->host->mmc->caps2 |= MMC_CAP2_CQE;
741 if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) {
742 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES,
743 slot->host->mmc_host_ops.hs400_enhanced_strobe =
744 intel_hs400_enhanced_strobe;
745 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
751 static const struct cqhci_host_ops glk_cqhci_ops = {
752 .enable = sdhci_cqe_enable,
753 .disable = sdhci_cqe_disable,
754 .dumpregs = sdhci_pci_dumpregs,
757 static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
759 struct device *dev = &slot->chip->pdev->dev;
760 struct sdhci_host *host = slot->host;
761 struct cqhci_host *cq_host;
765 ret = sdhci_setup_host(host);
769 cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
775 cq_host->mmio = host->ioaddr + 0x200;
776 cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ;
777 cq_host->ops = &glk_cqhci_ops;
779 dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
781 cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
783 ret = cqhci_init(cq_host, host->mmc, dma64);
787 ret = __sdhci_add_host(host);
794 sdhci_cleanup_host(host);
799 #define GLK_RX_CTRL1 0x834
800 #define GLK_TUN_VAL 0x840
801 #define GLK_PATH_PLL GENMASK(13, 8)
802 #define GLK_DLY GENMASK(6, 0)
803 /* Workaround firmware failing to restore the tuning value */
804 static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp)
806 struct sdhci_pci_slot *slot = chip->slots[0];
807 struct intel_host *intel_host = sdhci_pci_priv(slot);
808 struct sdhci_host *host = slot->host;
813 if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc))
816 glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1);
817 glk_tun_val = sdhci_readl(host, GLK_TUN_VAL);
820 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1;
821 intel_host->glk_tun_val = glk_tun_val;
825 if (!intel_host->glk_tun_val)
828 if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) {
829 intel_host->rpm_retune_ok = true;
833 dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) +
834 (intel_host->glk_tun_val << 1));
835 if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1))
838 glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly;
839 sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1);
841 intel_host->rpm_retune_ok = true;
842 chip->rpm_retune = true;
843 mmc_retune_needed(host->mmc);
844 pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc));
847 static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp)
849 if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
851 glk_rpm_retune_wa(chip, susp);
854 static int glk_runtime_suspend(struct sdhci_pci_chip *chip)
856 glk_rpm_retune_chk(chip, true);
858 return sdhci_cqhci_runtime_suspend(chip);
861 static int glk_runtime_resume(struct sdhci_pci_chip *chip)
863 glk_rpm_retune_chk(chip, false);
865 return sdhci_cqhci_runtime_resume(chip);
870 static int ni_set_max_freq(struct sdhci_pci_slot *slot)
873 unsigned long long max_freq;
875 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev),
876 "MXFQ", NULL, &max_freq);
877 if (ACPI_FAILURE(status)) {
878 dev_err(&slot->chip->pdev->dev,
879 "MXFQ not found in acpi table\n");
883 slot->host->mmc->f_max = max_freq * 1000000;
888 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot)
894 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
898 byt_probe_slot(slot);
900 err = ni_set_max_freq(slot);
904 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
905 MMC_CAP_WAIT_WHILE_BUSY;
909 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
911 byt_probe_slot(slot);
912 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
913 MMC_CAP_WAIT_WHILE_BUSY;
917 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
919 byt_probe_slot(slot);
920 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
921 MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE;
923 slot->cd_override_level = true;
924 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
925 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
926 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
927 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
928 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
930 if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI &&
931 slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3)
932 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V;
937 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
938 .allow_runtime_pm = true,
939 .probe_slot = byt_emmc_probe_slot,
940 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
941 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
942 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
943 SDHCI_QUIRK2_STOP_WITH_TC,
944 .ops = &sdhci_intel_byt_ops,
945 .priv_size = sizeof(struct intel_host),
948 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
949 .allow_runtime_pm = true,
950 .probe_slot = glk_emmc_probe_slot,
951 .add_host = glk_emmc_add_host,
952 #ifdef CONFIG_PM_SLEEP
953 .suspend = sdhci_cqhci_suspend,
954 .resume = sdhci_cqhci_resume,
957 .runtime_suspend = glk_runtime_suspend,
958 .runtime_resume = glk_runtime_resume,
960 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
961 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
962 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
963 SDHCI_QUIRK2_STOP_WITH_TC,
964 .ops = &sdhci_intel_glk_ops,
965 .priv_size = sizeof(struct intel_host),
968 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
969 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
970 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
971 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
972 .allow_runtime_pm = true,
973 .probe_slot = ni_byt_sdio_probe_slot,
974 .ops = &sdhci_intel_byt_ops,
975 .priv_size = sizeof(struct intel_host),
978 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
979 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
980 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
981 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
982 .allow_runtime_pm = true,
983 .probe_slot = byt_sdio_probe_slot,
984 .ops = &sdhci_intel_byt_ops,
985 .priv_size = sizeof(struct intel_host),
988 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
989 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
990 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
991 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
992 SDHCI_QUIRK2_STOP_WITH_TC,
993 .allow_runtime_pm = true,
994 .own_cd_for_runtime_pm = true,
995 .probe_slot = byt_sd_probe_slot,
996 .ops = &sdhci_intel_byt_ops,
997 .priv_size = sizeof(struct intel_host),
1000 /* Define Host controllers for Intel Merrifield platform */
1001 #define INTEL_MRFLD_EMMC_0 0
1002 #define INTEL_MRFLD_EMMC_1 1
1003 #define INTEL_MRFLD_SD 2
1004 #define INTEL_MRFLD_SDIO 3
1007 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot)
1009 struct acpi_device *device, *child;
1011 device = ACPI_COMPANION(&slot->chip->pdev->dev);
1015 acpi_device_fix_up_power(device);
1016 list_for_each_entry(child, &device->children, node)
1017 if (child->status.present && child->status.enabled)
1018 acpi_device_fix_up_power(child);
1021 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {}
1024 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
1026 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
1029 case INTEL_MRFLD_EMMC_0:
1030 case INTEL_MRFLD_EMMC_1:
1031 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1032 MMC_CAP_8_BIT_DATA |
1035 case INTEL_MRFLD_SD:
1036 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
1038 case INTEL_MRFLD_SDIO:
1039 /* Advertise 2.0v for compatibility with the SDIO card's OCR */
1040 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195;
1041 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
1042 MMC_CAP_POWER_OFF_CARD;
1048 intel_mrfld_mmc_fix_up_power_slot(slot);
1052 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = {
1053 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1054 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
1055 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
1056 .allow_runtime_pm = true,
1057 .probe_slot = intel_mrfld_mmc_probe_slot,
1060 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
1065 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
1070 * Turn PMOS on [bit 0], set over current detection to 2.4 V
1071 * [bit 1:2] and enable over current debouncing [bit 6].
1078 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
1081 static int jmicron_probe(struct sdhci_pci_chip *chip)
1086 if (chip->pdev->revision == 0) {
1087 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
1088 SDHCI_QUIRK_32BIT_DMA_SIZE |
1089 SDHCI_QUIRK_32BIT_ADMA_SIZE |
1090 SDHCI_QUIRK_RESET_AFTER_REQUEST |
1091 SDHCI_QUIRK_BROKEN_SMALL_PIO;
1095 * JMicron chips can have two interfaces to the same hardware
1096 * in order to work around limitations in Microsoft's driver.
1097 * We need to make sure we only bind to one of them.
1099 * This code assumes two things:
1101 * 1. The PCI code adds subfunctions in order.
1103 * 2. The MMC interface has a lower subfunction number
1104 * than the SD interface.
1106 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
1107 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
1108 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
1109 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
1112 struct pci_dev *sd_dev;
1115 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
1116 mmcdev, sd_dev)) != NULL) {
1117 if ((PCI_SLOT(chip->pdev->devfn) ==
1118 PCI_SLOT(sd_dev->devfn)) &&
1119 (chip->pdev->bus == sd_dev->bus))
1124 pci_dev_put(sd_dev);
1125 dev_info(&chip->pdev->dev, "Refusing to bind to "
1126 "secondary interface.\n");
1132 * JMicron chips need a bit of a nudge to enable the power
1135 ret = jmicron_pmos(chip, 1);
1137 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1141 /* quirk for unsable RO-detection on JM388 chips */
1142 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
1143 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1144 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
1149 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
1153 scratch = readb(host->ioaddr + 0xC0);
1160 writeb(scratch, host->ioaddr + 0xC0);
1163 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
1165 if (slot->chip->pdev->revision == 0) {
1168 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
1169 version = (version & SDHCI_VENDOR_VER_MASK) >>
1170 SDHCI_VENDOR_VER_SHIFT;
1173 * Older versions of the chip have lots of nasty glitches
1174 * in the ADMA engine. It's best just to avoid it
1178 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
1181 /* JM388 MMC doesn't support 1.8V while SD supports it */
1182 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1183 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
1184 MMC_VDD_29_30 | MMC_VDD_30_31 |
1185 MMC_VDD_165_195; /* allow 1.8V */
1186 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
1187 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
1191 * The secondary interface requires a bit set to get the
1194 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1195 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1196 jmicron_enable_mmc(slot->host, 1);
1198 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
1203 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
1208 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1209 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
1210 jmicron_enable_mmc(slot->host, 0);
1213 #ifdef CONFIG_PM_SLEEP
1214 static int jmicron_suspend(struct sdhci_pci_chip *chip)
1218 ret = sdhci_pci_suspend_host(chip);
1222 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1223 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1224 for (i = 0; i < chip->num_slots; i++)
1225 jmicron_enable_mmc(chip->slots[i]->host, 0);
1231 static int jmicron_resume(struct sdhci_pci_chip *chip)
1235 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
1236 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
1237 for (i = 0; i < chip->num_slots; i++)
1238 jmicron_enable_mmc(chip->slots[i]->host, 1);
1241 ret = jmicron_pmos(chip, 1);
1243 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
1247 return sdhci_pci_resume_host(chip);
1251 static const struct sdhci_pci_fixes sdhci_o2 = {
1252 .probe = sdhci_pci_o2_probe,
1253 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1254 .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
1255 .probe_slot = sdhci_pci_o2_probe_slot,
1256 #ifdef CONFIG_PM_SLEEP
1257 .resume = sdhci_pci_o2_resume,
1261 static const struct sdhci_pci_fixes sdhci_jmicron = {
1262 .probe = jmicron_probe,
1264 .probe_slot = jmicron_probe_slot,
1265 .remove_slot = jmicron_remove_slot,
1267 #ifdef CONFIG_PM_SLEEP
1268 .suspend = jmicron_suspend,
1269 .resume = jmicron_resume,
1273 /* SysKonnect CardBus2SDIO extra registers */
1274 #define SYSKT_CTRL 0x200
1275 #define SYSKT_RDFIFO_STAT 0x204
1276 #define SYSKT_WRFIFO_STAT 0x208
1277 #define SYSKT_POWER_DATA 0x20c
1278 #define SYSKT_POWER_330 0xef
1279 #define SYSKT_POWER_300 0xf8
1280 #define SYSKT_POWER_184 0xcc
1281 #define SYSKT_POWER_CMD 0x20d
1282 #define SYSKT_POWER_START (1 << 7)
1283 #define SYSKT_POWER_STATUS 0x20e
1284 #define SYSKT_POWER_STATUS_OK (1 << 0)
1285 #define SYSKT_BOARD_REV 0x210
1286 #define SYSKT_CHIP_REV 0x211
1287 #define SYSKT_CONF_DATA 0x212
1288 #define SYSKT_CONF_DATA_1V8 (1 << 2)
1289 #define SYSKT_CONF_DATA_2V5 (1 << 1)
1290 #define SYSKT_CONF_DATA_3V3 (1 << 0)
1292 static int syskt_probe(struct sdhci_pci_chip *chip)
1294 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1295 chip->pdev->class &= ~0x0000FF;
1296 chip->pdev->class |= PCI_SDHCI_IFDMA;
1301 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
1305 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
1306 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
1307 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
1308 "board rev %d.%d, chip rev %d.%d\n",
1309 board_rev >> 4, board_rev & 0xf,
1310 chip_rev >> 4, chip_rev & 0xf);
1311 if (chip_rev >= 0x20)
1312 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
1314 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
1315 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
1317 tm = 10; /* Wait max 1 ms */
1319 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
1320 if (ps & SYSKT_POWER_STATUS_OK)
1325 dev_err(&slot->chip->pdev->dev,
1326 "power regulator never stabilized");
1327 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
1334 static const struct sdhci_pci_fixes sdhci_syskt = {
1335 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
1336 .probe = syskt_probe,
1337 .probe_slot = syskt_probe_slot,
1340 static int via_probe(struct sdhci_pci_chip *chip)
1342 if (chip->pdev->revision == 0x10)
1343 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
1348 static const struct sdhci_pci_fixes sdhci_via = {
1352 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
1354 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
1358 static const struct sdhci_pci_fixes sdhci_rtsx = {
1359 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
1360 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
1361 SDHCI_QUIRK2_BROKEN_DDR50,
1362 .probe_slot = rtsx_probe_slot,
1365 /*AMD chipset generation*/
1366 enum amd_chipset_gen {
1367 AMD_CHIPSET_BEFORE_ML,
1370 AMD_CHIPSET_UNKNOWN,
1374 #define AMD_SD_AUTO_PATTERN 0xB8
1375 #define AMD_MSLEEP_DURATION 4
1376 #define AMD_SD_MISC_CONTROL 0xD0
1377 #define AMD_MAX_TUNE_VALUE 0x0B
1378 #define AMD_AUTO_TUNE_SEL 0x10800
1379 #define AMD_FIFO_PTR 0x30
1380 #define AMD_BIT_MASK 0x1F
1382 static void amd_tuning_reset(struct sdhci_host *host)
1386 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1387 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING;
1388 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1390 val = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1391 val &= ~SDHCI_CTRL_EXEC_TUNING;
1392 sdhci_writew(host, val, SDHCI_HOST_CONTROL2);
1395 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase)
1399 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val);
1400 val &= ~AMD_BIT_MASK;
1401 val |= (AMD_AUTO_TUNE_SEL | (phase << 1));
1402 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val);
1405 static void amd_enable_manual_tuning(struct pci_dev *pdev)
1409 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val);
1410 val |= AMD_FIFO_PTR;
1411 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val);
1414 static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode)
1416 struct sdhci_pci_slot *slot = sdhci_priv(host);
1417 struct pci_dev *pdev = slot->chip->pdev;
1419 u8 valid_win_max = 0;
1420 u8 valid_win_end = 0;
1421 u8 ctrl, tune_around;
1423 amd_tuning_reset(host);
1425 for (tune_around = 0; tune_around < 12; tune_around++) {
1426 amd_config_tuning_phase(pdev, tune_around);
1428 if (mmc_send_tuning(host->mmc, opcode, NULL)) {
1430 msleep(AMD_MSLEEP_DURATION);
1431 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA;
1432 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET);
1433 } else if (++valid_win > valid_win_max) {
1434 valid_win_max = valid_win;
1435 valid_win_end = tune_around;
1439 if (!valid_win_max) {
1440 dev_err(&pdev->dev, "no tuning point found\n");
1444 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2);
1446 amd_enable_manual_tuning(pdev);
1448 host->mmc->retune_period = 0;
1453 static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode)
1455 struct sdhci_host *host = mmc_priv(mmc);
1457 /* AMD requires custom HS200 tuning */
1458 if (host->timing == MMC_TIMING_MMC_HS200)
1459 return amd_execute_tuning_hs200(host, opcode);
1461 /* Otherwise perform standard SDHCI tuning */
1462 return sdhci_execute_tuning(mmc, opcode);
1465 static int amd_probe_slot(struct sdhci_pci_slot *slot)
1467 struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
1469 ops->execute_tuning = amd_execute_tuning;
1474 static int amd_probe(struct sdhci_pci_chip *chip)
1476 struct pci_dev *smbus_dev;
1477 enum amd_chipset_gen gen;
1479 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1480 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
1482 gen = AMD_CHIPSET_BEFORE_ML;
1484 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
1485 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
1487 if (smbus_dev->revision < 0x51)
1488 gen = AMD_CHIPSET_CZ;
1490 gen = AMD_CHIPSET_NL;
1492 gen = AMD_CHIPSET_UNKNOWN;
1496 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ)
1497 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
1502 static const struct sdhci_ops amd_sdhci_pci_ops = {
1503 .set_clock = sdhci_set_clock,
1504 .enable_dma = sdhci_pci_enable_dma,
1505 .set_bus_width = sdhci_set_bus_width,
1506 .reset = sdhci_reset,
1507 .set_uhs_signaling = sdhci_set_uhs_signaling,
1510 static const struct sdhci_pci_fixes sdhci_amd = {
1512 .ops = &amd_sdhci_pci_ops,
1513 .probe_slot = amd_probe_slot,
1516 static const struct pci_device_id pci_ids[] = {
1517 SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh),
1518 SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc),
1519 SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc),
1520 SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc),
1521 SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712),
1522 SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712),
1523 SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714),
1524 SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714),
1525 SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe),
1526 SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron),
1527 SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron),
1528 SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron),
1529 SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron),
1530 SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt),
1531 SDHCI_PCI_DEVICE(VIA, 95D0, via),
1532 SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx),
1533 SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk),
1534 SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0),
1535 SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2),
1536 SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2),
1537 SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd),
1538 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio),
1539 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio),
1540 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc),
1541 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc),
1542 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio),
1543 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio),
1544 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc),
1545 SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio),
1546 SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio),
1547 SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd),
1548 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc),
1549 SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc),
1550 SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio),
1551 SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd),
1552 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd),
1553 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio),
1554 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio),
1555 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc),
1556 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc),
1557 SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc),
1558 SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc),
1559 SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio),
1560 SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd),
1561 SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc),
1562 SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc),
1563 SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc),
1564 SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio),
1565 SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd),
1566 SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc),
1567 SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio),
1568 SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd),
1569 SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc),
1570 SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio),
1571 SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd),
1572 SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc),
1573 SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio),
1574 SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd),
1575 SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc),
1576 SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd),
1577 SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
1578 SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc),
1579 SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd),
1580 SDHCI_PCI_DEVICE(O2, 8120, o2),
1581 SDHCI_PCI_DEVICE(O2, 8220, o2),
1582 SDHCI_PCI_DEVICE(O2, 8221, o2),
1583 SDHCI_PCI_DEVICE(O2, 8320, o2),
1584 SDHCI_PCI_DEVICE(O2, 8321, o2),
1585 SDHCI_PCI_DEVICE(O2, FUJIN2, o2),
1586 SDHCI_PCI_DEVICE(O2, SDS0, o2),
1587 SDHCI_PCI_DEVICE(O2, SDS1, o2),
1588 SDHCI_PCI_DEVICE(O2, SEABIRD0, o2),
1589 SDHCI_PCI_DEVICE(O2, SEABIRD1, o2),
1590 SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan),
1591 SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps),
1592 SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd),
1593 /* Generic SD host controller */
1594 {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)},
1595 { /* end: all zeroes */ },
1598 MODULE_DEVICE_TABLE(pci, pci_ids);
1600 /*****************************************************************************\
1602 * SDHCI core callbacks *
1604 \*****************************************************************************/
1606 int sdhci_pci_enable_dma(struct sdhci_host *host)
1608 struct sdhci_pci_slot *slot;
1609 struct pci_dev *pdev;
1611 slot = sdhci_priv(host);
1612 pdev = slot->chip->pdev;
1614 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1615 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1616 (host->flags & SDHCI_USE_SDMA)) {
1617 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1618 "doesn't fully claim to support it.\n");
1621 pci_set_master(pdev);
1626 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1628 struct sdhci_pci_slot *slot = sdhci_priv(host);
1629 int rst_n_gpio = slot->rst_n_gpio;
1631 if (!gpio_is_valid(rst_n_gpio))
1633 gpio_set_value_cansleep(rst_n_gpio, 0);
1634 /* For eMMC, minimum is 1us but give it 10us for good measure */
1636 gpio_set_value_cansleep(rst_n_gpio, 1);
1637 /* For eMMC, minimum is 200us but give it 300us for good measure */
1638 usleep_range(300, 1000);
1641 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1643 struct sdhci_pci_slot *slot = sdhci_priv(host);
1646 slot->hw_reset(host);
1649 static const struct sdhci_ops sdhci_pci_ops = {
1650 .set_clock = sdhci_set_clock,
1651 .enable_dma = sdhci_pci_enable_dma,
1652 .set_bus_width = sdhci_set_bus_width,
1653 .reset = sdhci_reset,
1654 .set_uhs_signaling = sdhci_set_uhs_signaling,
1655 .hw_reset = sdhci_pci_hw_reset,
1658 /*****************************************************************************\
1662 \*****************************************************************************/
1664 #ifdef CONFIG_PM_SLEEP
1665 static int sdhci_pci_suspend(struct device *dev)
1667 struct pci_dev *pdev = to_pci_dev(dev);
1668 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1673 if (chip->fixes && chip->fixes->suspend)
1674 return chip->fixes->suspend(chip);
1676 return sdhci_pci_suspend_host(chip);
1679 static int sdhci_pci_resume(struct device *dev)
1681 struct pci_dev *pdev = to_pci_dev(dev);
1682 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1687 if (chip->fixes && chip->fixes->resume)
1688 return chip->fixes->resume(chip);
1690 return sdhci_pci_resume_host(chip);
1695 static int sdhci_pci_runtime_suspend(struct device *dev)
1697 struct pci_dev *pdev = to_pci_dev(dev);
1698 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1703 if (chip->fixes && chip->fixes->runtime_suspend)
1704 return chip->fixes->runtime_suspend(chip);
1706 return sdhci_pci_runtime_suspend_host(chip);
1709 static int sdhci_pci_runtime_resume(struct device *dev)
1711 struct pci_dev *pdev = to_pci_dev(dev);
1712 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
1717 if (chip->fixes && chip->fixes->runtime_resume)
1718 return chip->fixes->runtime_resume(chip);
1720 return sdhci_pci_runtime_resume_host(chip);
1724 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1725 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume)
1726 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1727 sdhci_pci_runtime_resume, NULL)
1730 /*****************************************************************************\
1732 * Device probing/removal *
1734 \*****************************************************************************/
1736 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1737 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1740 struct sdhci_pci_slot *slot;
1741 struct sdhci_host *host;
1742 int ret, bar = first_bar + slotno;
1743 size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
1745 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1746 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1747 return ERR_PTR(-ENODEV);
1750 if (pci_resource_len(pdev, bar) < 0x100) {
1751 dev_err(&pdev->dev, "Invalid iomem size. You may "
1752 "experience problems.\n");
1755 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1756 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1757 return ERR_PTR(-ENODEV);
1760 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1761 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1762 return ERR_PTR(-ENODEV);
1765 host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
1767 dev_err(&pdev->dev, "cannot allocate host\n");
1768 return ERR_CAST(host);
1771 slot = sdhci_priv(host);
1775 slot->rst_n_gpio = -EINVAL;
1776 slot->cd_gpio = -EINVAL;
1779 /* Retrieve platform data if there is any */
1780 if (*sdhci_pci_get_data)
1781 slot->data = sdhci_pci_get_data(pdev, slotno);
1784 if (slot->data->setup) {
1785 ret = slot->data->setup(slot->data);
1787 dev_err(&pdev->dev, "platform setup failed\n");
1791 slot->rst_n_gpio = slot->data->rst_n_gpio;
1792 slot->cd_gpio = slot->data->cd_gpio;
1795 host->hw_name = "PCI";
1796 host->ops = chip->fixes && chip->fixes->ops ?
1799 host->quirks = chip->quirks;
1800 host->quirks2 = chip->quirks2;
1802 host->irq = pdev->irq;
1804 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc));
1806 dev_err(&pdev->dev, "cannot request region\n");
1810 host->ioaddr = pcim_iomap_table(pdev)[bar];
1812 if (chip->fixes && chip->fixes->probe_slot) {
1813 ret = chip->fixes->probe_slot(slot);
1818 if (gpio_is_valid(slot->rst_n_gpio)) {
1819 if (!devm_gpio_request(&pdev->dev, slot->rst_n_gpio, "eMMC_reset")) {
1820 gpio_direction_output(slot->rst_n_gpio, 1);
1821 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1822 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1824 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1825 slot->rst_n_gpio = -EINVAL;
1829 host->mmc->pm_caps = MMC_PM_KEEP_POWER;
1830 host->mmc->slotno = slotno;
1831 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1833 if (device_can_wakeup(&pdev->dev))
1834 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
1836 if (host->mmc->caps & MMC_CAP_CD_WAKE)
1837 device_init_wakeup(&pdev->dev, true);
1839 if (slot->cd_idx >= 0) {
1840 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
1841 slot->cd_override_level, 0, NULL);
1842 if (ret && ret != -EPROBE_DEFER)
1843 ret = mmc_gpiod_request_cd(host->mmc, NULL,
1845 slot->cd_override_level,
1847 if (ret == -EPROBE_DEFER)
1851 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1856 if (chip->fixes && chip->fixes->add_host)
1857 ret = chip->fixes->add_host(slot);
1859 ret = sdhci_add_host(host);
1863 sdhci_pci_add_own_cd(slot);
1866 * Check if the chip needs a separate GPIO for card detect to wake up
1867 * from runtime suspend. If it is not there, don't allow runtime PM.
1868 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1870 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1871 !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1872 chip->allow_runtime_pm = false;
1877 if (chip->fixes && chip->fixes->remove_slot)
1878 chip->fixes->remove_slot(slot, 0);
1881 if (slot->data && slot->data->cleanup)
1882 slot->data->cleanup(slot->data);
1885 sdhci_free_host(host);
1887 return ERR_PTR(ret);
1890 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1895 sdhci_pci_remove_own_cd(slot);
1898 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1899 if (scratch == (u32)-1)
1902 sdhci_remove_host(slot->host, dead);
1904 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1905 slot->chip->fixes->remove_slot(slot, dead);
1907 if (slot->data && slot->data->cleanup)
1908 slot->data->cleanup(slot->data);
1910 sdhci_free_host(slot->host);
1913 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1915 pm_suspend_ignore_children(dev, 1);
1916 pm_runtime_set_autosuspend_delay(dev, 50);
1917 pm_runtime_use_autosuspend(dev);
1918 pm_runtime_allow(dev);
1919 /* Stay active until mmc core scans for a card */
1920 pm_runtime_put_noidle(dev);
1923 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1925 pm_runtime_forbid(dev);
1926 pm_runtime_get_noresume(dev);
1929 static int sdhci_pci_probe(struct pci_dev *pdev,
1930 const struct pci_device_id *ent)
1932 struct sdhci_pci_chip *chip;
1933 struct sdhci_pci_slot *slot;
1935 u8 slots, first_bar;
1938 BUG_ON(pdev == NULL);
1939 BUG_ON(ent == NULL);
1941 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1942 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1944 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1948 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1949 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1953 BUG_ON(slots > MAX_SLOTS);
1955 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1959 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1961 if (first_bar > 5) {
1962 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1966 ret = pcim_enable_device(pdev);
1970 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
1975 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1977 chip->quirks = chip->fixes->quirks;
1978 chip->quirks2 = chip->fixes->quirks2;
1979 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1981 chip->num_slots = slots;
1982 chip->pm_retune = true;
1983 chip->rpm_retune = true;
1985 pci_set_drvdata(pdev, chip);
1987 if (chip->fixes && chip->fixes->probe) {
1988 ret = chip->fixes->probe(chip);
1993 slots = chip->num_slots; /* Quirk may have changed this */
1995 for (i = 0; i < slots; i++) {
1996 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1998 for (i--; i >= 0; i--)
1999 sdhci_pci_remove_slot(chip->slots[i]);
2000 return PTR_ERR(slot);
2003 chip->slots[i] = slot;
2006 if (chip->allow_runtime_pm)
2007 sdhci_pci_runtime_pm_allow(&pdev->dev);
2012 static void sdhci_pci_remove(struct pci_dev *pdev)
2015 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
2017 if (chip->allow_runtime_pm)
2018 sdhci_pci_runtime_pm_forbid(&pdev->dev);
2020 for (i = 0; i < chip->num_slots; i++)
2021 sdhci_pci_remove_slot(chip->slots[i]);
2024 static struct pci_driver sdhci_driver = {
2025 .name = "sdhci-pci",
2026 .id_table = pci_ids,
2027 .probe = sdhci_pci_probe,
2028 .remove = sdhci_pci_remove,
2030 .pm = &sdhci_pci_pm_ops
2034 module_pci_driver(sdhci_driver);
2037 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
2038 MODULE_LICENSE("GPL");