3  *  linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver
30 #include <linux/mmc/host.h>
40 	pr_debug("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
43 	pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
50 static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
52 static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);
54 void sdhci_dumpregs(struct sdhci_host *host)  in sdhci_dumpregs()  argument
59 		   sdhci_readl(host, SDHCI_DMA_ADDRESS),  in sdhci_dumpregs()
60 		   sdhci_readw(host, SDHCI_HOST_VERSION));  in sdhci_dumpregs()
62 		   sdhci_readw(host, SDHCI_BLOCK_SIZE),  in sdhci_dumpregs()
63 		   sdhci_readw(host, SDHCI_BLOCK_COUNT));  in sdhci_dumpregs()
65 		   sdhci_readl(host, SDHCI_ARGUMENT),  in sdhci_dumpregs()
66 		   sdhci_readw(host, SDHCI_TRANSFER_MODE));  in sdhci_dumpregs()
67 	SDHCI_DUMP("Present:   0x%08x | Host ctl: 0x%08x\n",  in sdhci_dumpregs()
68 		   sdhci_readl(host, SDHCI_PRESENT_STATE),  in sdhci_dumpregs()
69 		   sdhci_readb(host, SDHCI_HOST_CONTROL));  in sdhci_dumpregs()
71 		   sdhci_readb(host, SDHCI_POWER_CONTROL),  in sdhci_dumpregs()
72 		   sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));  in sdhci_dumpregs()
74 		   sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),  in sdhci_dumpregs()
75 		   sdhci_readw(host, SDHCI_CLOCK_CONTROL));  in sdhci_dumpregs()
77 		   sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),  in sdhci_dumpregs()
78 		   sdhci_readl(host, SDHCI_INT_STATUS));  in sdhci_dumpregs()
80 		   sdhci_readl(host, SDHCI_INT_ENABLE),  in sdhci_dumpregs()
81 		   sdhci_readl(host, SDHCI_SIGNAL_ENABLE));  in sdhci_dumpregs()
83 		   sdhci_readw(host, SDHCI_AUTO_CMD_STATUS),  in sdhci_dumpregs()
84 		   sdhci_readw(host, SDHCI_SLOT_INT_STATUS));  in sdhci_dumpregs()
86 		   sdhci_readl(host, SDHCI_CAPABILITIES),  in sdhci_dumpregs()
87 		   sdhci_readl(host, SDHCI_CAPABILITIES_1));  in sdhci_dumpregs()
89 		   sdhci_readw(host, SDHCI_COMMAND),  in sdhci_dumpregs()
90 		   sdhci_readl(host, SDHCI_MAX_CURRENT));  in sdhci_dumpregs()
92 		   sdhci_readl(host, SDHCI_RESPONSE),  in sdhci_dumpregs()
93 		   sdhci_readl(host, SDHCI_RESPONSE + 4));  in sdhci_dumpregs()
95 		   sdhci_readl(host, SDHCI_RESPONSE + 8),  in sdhci_dumpregs()
96 		   sdhci_readl(host, SDHCI_RESPONSE + 12));  in sdhci_dumpregs()
97 	SDHCI_DUMP("Host ctl2: 0x%08x\n",  in sdhci_dumpregs()
98 		   sdhci_readw(host, SDHCI_HOST_CONTROL2));  in sdhci_dumpregs()
100 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_dumpregs()
101 		if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_dumpregs()
103 				   sdhci_readl(host, SDHCI_ADMA_ERROR),  in sdhci_dumpregs()
104 				   sdhci_readl(host, SDHCI_ADMA_ADDRESS_HI),  in sdhci_dumpregs()
105 				   sdhci_readl(host, SDHCI_ADMA_ADDRESS));  in sdhci_dumpregs()
108 				   sdhci_readl(host, SDHCI_ADMA_ERROR),  in sdhci_dumpregs()
109 				   sdhci_readl(host, SDHCI_ADMA_ADDRESS));  in sdhci_dumpregs()
113 	if (host->ops->dump_vendor_regs)  in sdhci_dumpregs()
114 		host->ops->dump_vendor_regs(host);  in sdhci_dumpregs()
126 static void sdhci_do_enable_v4_mode(struct sdhci_host *host)  in sdhci_do_enable_v4_mode()  argument
130 	ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_do_enable_v4_mode()
135 	sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);  in sdhci_do_enable_v4_mode()
139  * This can be called before sdhci_add_host() by Vendor's host controller
142 void sdhci_enable_v4_mode(struct sdhci_host *host)  in sdhci_enable_v4_mode()  argument
144 	host->v4_mode = true;  in sdhci_enable_v4_mode()
145 	sdhci_do_enable_v4_mode(host);  in sdhci_enable_v4_mode()
154 static void sdhci_set_card_detection(struct sdhci_host *host, bool enable)  in sdhci_set_card_detection()  argument
158 	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) ||  in sdhci_set_card_detection()
159 	    !mmc_card_is_removable(host->mmc) || mmc_can_gpio_cd(host->mmc))  in sdhci_set_card_detection()
163 		present = sdhci_readl(host, SDHCI_PRESENT_STATE) &  in sdhci_set_card_detection()
166 		host->ier |= present ? SDHCI_INT_CARD_REMOVE :  in sdhci_set_card_detection()
169 		host->ier &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);  in sdhci_set_card_detection()
172 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_card_detection()
173 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_card_detection()
176 static void sdhci_enable_card_detection(struct sdhci_host *host)  in sdhci_enable_card_detection()  argument
178 	sdhci_set_card_detection(host, true);  in sdhci_enable_card_detection()
181 static void sdhci_disable_card_detection(struct sdhci_host *host)  in sdhci_disable_card_detection()  argument
183 	sdhci_set_card_detection(host, false);  in sdhci_disable_card_detection()
186 static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)  in sdhci_runtime_pm_bus_on()  argument
188 	if (host->bus_on)  in sdhci_runtime_pm_bus_on()
190 	host->bus_on = true;  in sdhci_runtime_pm_bus_on()
191 	pm_runtime_get_noresume(mmc_dev(host->mmc));  in sdhci_runtime_pm_bus_on()
194 static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)  in sdhci_runtime_pm_bus_off()  argument
196 	if (!host->bus_on)  in sdhci_runtime_pm_bus_off()
198 	host->bus_on = false;  in sdhci_runtime_pm_bus_off()
199 	pm_runtime_put_noidle(mmc_dev(host->mmc));  in sdhci_runtime_pm_bus_off()
202 void sdhci_reset(struct sdhci_host *host, u8 mask)  in sdhci_reset()  argument
206 	sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);  in sdhci_reset()
209 		host->clock = 0;  in sdhci_reset()
211 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_reset()
212 			sdhci_runtime_pm_bus_off(host);  in sdhci_reset()
222 		if (!(sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask))  in sdhci_reset()
226 				mmc_hostname(host->mmc), (int)mask);  in sdhci_reset()
227 			sdhci_err_stats_inc(host, CTRL_TIMEOUT);  in sdhci_reset()
228 			sdhci_dumpregs(host);  in sdhci_reset()
236 static bool sdhci_do_reset(struct sdhci_host *host, u8 mask)  in sdhci_do_reset()  argument
238 	if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {  in sdhci_do_reset()
239 		struct mmc_host *mmc = host->mmc;  in sdhci_do_reset()
245 	host->ops->reset(host, mask);  in sdhci_do_reset()
250 static void sdhci_reset_for_all(struct sdhci_host *host)  in sdhci_reset_for_all()  argument
252 	if (sdhci_do_reset(host, SDHCI_RESET_ALL)) {  in sdhci_reset_for_all()
253 		if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_reset_for_all()
254 			if (host->ops->enable_dma)  in sdhci_reset_for_all()
255 				host->ops->enable_dma(host);  in sdhci_reset_for_all()
258 		host->preset_enabled = false;  in sdhci_reset_for_all()
271 static void sdhci_reset_for_reason(struct sdhci_host *host, enum sdhci_reset_reason reason)  in sdhci_reset_for_reason()  argument
275 		sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);  in sdhci_reset_for_reason()
281 		sdhci_do_reset(host, SDHCI_RESET_CMD);  in sdhci_reset_for_reason()
282 		sdhci_do_reset(host, SDHCI_RESET_DATA);  in sdhci_reset_for_reason()
285 		sdhci_do_reset(host, SDHCI_RESET_DATA);  in sdhci_reset_for_reason()
292 static void sdhci_set_default_irqs(struct sdhci_host *host)  in sdhci_set_default_irqs()  argument
294 	host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |  in sdhci_set_default_irqs()
300 	if (host->tuning_mode == SDHCI_TUNING_MODE_2 ||  in sdhci_set_default_irqs()
301 	    host->tuning_mode == SDHCI_TUNING_MODE_3)  in sdhci_set_default_irqs()
302 		host->ier |= SDHCI_INT_RETUNE;  in sdhci_set_default_irqs()
304 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_default_irqs()
305 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_default_irqs()
308 static void sdhci_config_dma(struct sdhci_host *host)  in sdhci_config_dma()  argument
313 	if (host->version < SDHCI_SPEC_200)  in sdhci_config_dma()
316 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in sdhci_config_dma()
324 	if (!(host->flags & SDHCI_REQ_USE_DMA))  in sdhci_config_dma()
328 	if (host->flags & SDHCI_USE_ADMA)  in sdhci_config_dma()
331 	if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_config_dma()
337 		if (host->v4_mode) {  in sdhci_config_dma()
338 			ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_config_dma()
340 			sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);  in sdhci_config_dma()
341 		} else if (host->flags & SDHCI_USE_ADMA) {  in sdhci_config_dma()
351 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_config_dma()
354 static void sdhci_init(struct sdhci_host *host, int soft)  in sdhci_init()  argument
356 	struct mmc_host *mmc = host->mmc;  in sdhci_init()
360 		sdhci_reset_for(host, INIT);  in sdhci_init()
362 		sdhci_reset_for_all(host);  in sdhci_init()
364 	if (host->v4_mode)  in sdhci_init()
365 		sdhci_do_enable_v4_mode(host);  in sdhci_init()
367 	spin_lock_irqsave(&host->lock, flags);  in sdhci_init()
368 	sdhci_set_default_irqs(host);  in sdhci_init()
369 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_init()
371 	host->cqe_on = false;  in sdhci_init()
375 		host->clock = 0;  in sdhci_init()
376 		host->reinit_uhs = true;  in sdhci_init()
381 static void sdhci_reinit(struct sdhci_host *host)  in sdhci_reinit()  argument
383 	u32 cd = host->ier & (SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);  in sdhci_reinit()
385 	sdhci_init(host, 0);  in sdhci_reinit()
386 	sdhci_enable_card_detection(host);  in sdhci_reinit()
391 	 * been missed while the host controller was being reset, so trigger a  in sdhci_reinit()
394 	if (cd != (host->ier & (SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT)))  in sdhci_reinit()
395 		mmc_detect_change(host->mmc, msecs_to_jiffies(200));  in sdhci_reinit()
398 static void __sdhci_led_activate(struct sdhci_host *host)  in __sdhci_led_activate()  argument
402 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in __sdhci_led_activate()
405 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in __sdhci_led_activate()
407 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in __sdhci_led_activate()
410 static void __sdhci_led_deactivate(struct sdhci_host *host)  in __sdhci_led_deactivate()  argument
414 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in __sdhci_led_deactivate()
417 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in __sdhci_led_deactivate()
419 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in __sdhci_led_deactivate()
426 	struct sdhci_host *host = container_of(led, struct sdhci_host, led);  in sdhci_led_control()  local
429 	spin_lock_irqsave(&host->lock, flags);  in sdhci_led_control()
431 	if (host->runtime_suspended)  in sdhci_led_control()
435 		__sdhci_led_deactivate(host);  in sdhci_led_control()
437 		__sdhci_led_activate(host);  in sdhci_led_control()
439 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_led_control()
442 static int sdhci_led_register(struct sdhci_host *host)  in sdhci_led_register()  argument
444 	struct mmc_host *mmc = host->mmc;  in sdhci_led_register()
446 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in sdhci_led_register()
449 	snprintf(host->led_name, sizeof(host->led_name),  in sdhci_led_register()
452 	host->led.name = host->led_name;  in sdhci_led_register()
453 	host->led.brightness = LED_OFF;  in sdhci_led_register()
454 	host->led.default_trigger = mmc_hostname(mmc);  in sdhci_led_register()
455 	host->led.brightness_set = sdhci_led_control;  in sdhci_led_register()
457 	return led_classdev_register(mmc_dev(mmc), &host->led);  in sdhci_led_register()
460 static void sdhci_led_unregister(struct sdhci_host *host)  in sdhci_led_unregister()  argument
462 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in sdhci_led_unregister()
465 	led_classdev_unregister(&host->led);  in sdhci_led_unregister()
468 static inline void sdhci_led_activate(struct sdhci_host *host)  in sdhci_led_activate()  argument
472 static inline void sdhci_led_deactivate(struct sdhci_host *host)  in sdhci_led_deactivate()  argument
478 static inline int sdhci_led_register(struct sdhci_host *host)  in sdhci_led_register()  argument
483 static inline void sdhci_led_unregister(struct sdhci_host *host)  in sdhci_led_unregister()  argument
487 static inline void sdhci_led_activate(struct sdhci_host *host)  in sdhci_led_activate()  argument
489 	__sdhci_led_activate(host);  in sdhci_led_activate()
492 static inline void sdhci_led_deactivate(struct sdhci_host *host)  in sdhci_led_deactivate()  argument
494 	__sdhci_led_deactivate(host);  in sdhci_led_deactivate()
499 static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq,  in sdhci_mod_timer()  argument
503 		mod_timer(&host->data_timer, timeout);  in sdhci_mod_timer()
505 		mod_timer(&host->timer, timeout);  in sdhci_mod_timer()
508 static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *mrq)  in sdhci_del_timer()  argument
511 		del_timer(&host->data_timer);  in sdhci_del_timer()
513 		del_timer(&host->timer);  in sdhci_del_timer()
516 static inline bool sdhci_has_requests(struct sdhci_host *host)  in sdhci_has_requests()  argument
518 	return host->cmd || host->data_cmd;  in sdhci_has_requests()
527 static void sdhci_read_block_pio(struct sdhci_host *host)  in sdhci_read_block_pio()  argument
536 	blksize = host->data->blksz;  in sdhci_read_block_pio()
542 		BUG_ON(!sg_miter_next(&host->sg_miter));  in sdhci_read_block_pio()
544 		len = min(host->sg_miter.length, blksize);  in sdhci_read_block_pio()
547 		host->sg_miter.consumed = len;  in sdhci_read_block_pio()
549 		buf = host->sg_miter.addr;  in sdhci_read_block_pio()
553 				scratch = sdhci_readl(host, SDHCI_BUFFER);  in sdhci_read_block_pio()
566 	sg_miter_stop(&host->sg_miter);  in sdhci_read_block_pio()
571 static void sdhci_write_block_pio(struct sdhci_host *host)  in sdhci_write_block_pio()  argument
580 	blksize = host->data->blksz;  in sdhci_write_block_pio()
587 		BUG_ON(!sg_miter_next(&host->sg_miter));  in sdhci_write_block_pio()
589 		len = min(host->sg_miter.length, blksize);  in sdhci_write_block_pio()
592 		host->sg_miter.consumed = len;  in sdhci_write_block_pio()
594 		buf = host->sg_miter.addr;  in sdhci_write_block_pio()
604 				sdhci_writel(host, scratch, SDHCI_BUFFER);  in sdhci_write_block_pio()
611 	sg_miter_stop(&host->sg_miter);  in sdhci_write_block_pio()
616 static void sdhci_transfer_pio(struct sdhci_host *host)  in sdhci_transfer_pio()  argument
620 	if (host->blocks == 0)  in sdhci_transfer_pio()
623 	if (host->data->flags & MMC_DATA_READ)  in sdhci_transfer_pio()
633 	if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) &&  in sdhci_transfer_pio()
634 		(host->data->blocks == 1))  in sdhci_transfer_pio()
637 	while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {  in sdhci_transfer_pio()
638 		if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY)  in sdhci_transfer_pio()
641 		if (host->data->flags & MMC_DATA_READ)  in sdhci_transfer_pio()
642 			sdhci_read_block_pio(host);  in sdhci_transfer_pio()
644 			sdhci_write_block_pio(host);  in sdhci_transfer_pio()
646 		host->blocks--;  in sdhci_transfer_pio()
647 		if (host->blocks == 0)  in sdhci_transfer_pio()
654 static int sdhci_pre_dma_transfer(struct sdhci_host *host,  in sdhci_pre_dma_transfer()  argument
667 	if (host->bounce_buffer) {  in sdhci_pre_dma_transfer()
670 		if (length > host->bounce_buffer_size) {  in sdhci_pre_dma_transfer()
672 			       mmc_hostname(host->mmc), length,  in sdhci_pre_dma_transfer()
673 			       host->bounce_buffer_size);  in sdhci_pre_dma_transfer()
678 			if (host->ops->copy_to_bounce_buffer) {  in sdhci_pre_dma_transfer()
679 				host->ops->copy_to_bounce_buffer(host,  in sdhci_pre_dma_transfer()
683 						  host->bounce_buffer, length);  in sdhci_pre_dma_transfer()
687 		dma_sync_single_for_device(mmc_dev(host->mmc),  in sdhci_pre_dma_transfer()
688 					   host->bounce_addr,  in sdhci_pre_dma_transfer()
689 					   host->bounce_buffer_size,  in sdhci_pre_dma_transfer()
695 		sg_count = dma_map_sg(mmc_dev(host->mmc),  in sdhci_pre_dma_transfer()
721 void sdhci_adma_write_desc(struct sdhci_host *host, void **desc,  in sdhci_adma_write_desc()  argument
731 	if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_adma_write_desc()
734 	*desc += host->desc_sz;  in sdhci_adma_write_desc()
738 static inline void __sdhci_adma_write_desc(struct sdhci_host *host,  in __sdhci_adma_write_desc()  argument
742 	if (host->ops->adma_write_desc)  in __sdhci_adma_write_desc()
743 		host->ops->adma_write_desc(host, desc, addr, len, cmd);  in __sdhci_adma_write_desc()
745 		sdhci_adma_write_desc(host, desc, addr, len, cmd);  in __sdhci_adma_write_desc()
756 static void sdhci_adma_table_pre(struct sdhci_host *host,  in sdhci_adma_table_pre()  argument
771 	host->sg_count = sg_count;  in sdhci_adma_table_pre()
773 	desc = host->adma_table;  in sdhci_adma_table_pre()
774 	align = host->align_buffer;  in sdhci_adma_table_pre()
776 	align_addr = host->align_addr;  in sdhci_adma_table_pre()
778 	for_each_sg(data->sg, sg, host->sg_count, i) {  in sdhci_adma_table_pre()
798 			__sdhci_adma_write_desc(host, &desc, align_addr,  in sdhci_adma_table_pre()
816 		while (len > host->max_adma) {  in sdhci_adma_table_pre()
819 			__sdhci_adma_write_desc(host, &desc, addr, n, ADMA2_TRAN_VALID);  in sdhci_adma_table_pre()
826 			__sdhci_adma_write_desc(host, &desc, addr, len,  in sdhci_adma_table_pre()
833 		WARN_ON((desc - host->adma_table) >= host->adma_table_sz);  in sdhci_adma_table_pre()
836 	if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) {  in sdhci_adma_table_pre()
838 		if (desc != host->adma_table) {  in sdhci_adma_table_pre()
839 			desc -= host->desc_sz;  in sdhci_adma_table_pre()
844 		__sdhci_adma_write_desc(host, &desc, 0, 0, ADMA2_NOP_END_VALID);  in sdhci_adma_table_pre()
848 static void sdhci_adma_table_post(struct sdhci_host *host,  in sdhci_adma_table_post()  argument
861 		for_each_sg(data->sg, sg, host->sg_count, i)  in sdhci_adma_table_post()
868 			dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,  in sdhci_adma_table_post()
871 			align = host->align_buffer;  in sdhci_adma_table_post()
873 			for_each_sg(data->sg, sg, host->sg_count, i) {  in sdhci_adma_table_post()
889 static void sdhci_set_adma_addr(struct sdhci_host *host, dma_addr_t addr)  in sdhci_set_adma_addr()  argument
891 	sdhci_writel(host, lower_32_bits(addr), SDHCI_ADMA_ADDRESS);  in sdhci_set_adma_addr()
892 	if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_set_adma_addr()
893 		sdhci_writel(host, upper_32_bits(addr), SDHCI_ADMA_ADDRESS_HI);  in sdhci_set_adma_addr()
896 static dma_addr_t sdhci_sdma_address(struct sdhci_host *host)  in sdhci_sdma_address()  argument
898 	if (host->bounce_buffer)  in sdhci_sdma_address()
899 		return host->bounce_addr;  in sdhci_sdma_address()
901 		return sg_dma_address(host->data->sg);  in sdhci_sdma_address()
904 static void sdhci_set_sdma_addr(struct sdhci_host *host, dma_addr_t addr)  in sdhci_set_sdma_addr()  argument
906 	if (host->v4_mode)  in sdhci_set_sdma_addr()
907 		sdhci_set_adma_addr(host, addr);  in sdhci_set_sdma_addr()
909 		sdhci_writel(host, addr, SDHCI_DMA_ADDRESS);  in sdhci_set_sdma_addr()
912 static unsigned int sdhci_target_timeout(struct sdhci_host *host,  in sdhci_target_timeout()  argument
923 		if (host->clock && data->timeout_clks) {  in sdhci_target_timeout()
928 			 * host->clock is in Hz.  target_timeout is in us.  in sdhci_target_timeout()
932 			if (do_div(val, host->clock))  in sdhci_target_timeout()
941 static void sdhci_calc_sw_timeout(struct sdhci_host *host,  in sdhci_calc_sw_timeout()  argument
945 	struct mmc_host *mmc = host->mmc;  in sdhci_calc_sw_timeout()
953 	target_timeout = sdhci_target_timeout(host, cmd, data);  in sdhci_calc_sw_timeout()
958 		freq = mmc->actual_clock ? : host->clock;  in sdhci_calc_sw_timeout()
964 		host->data_timeout = data->blocks * target_timeout +  in sdhci_calc_sw_timeout()
967 		host->data_timeout = target_timeout;  in sdhci_calc_sw_timeout()
970 	if (host->data_timeout)  in sdhci_calc_sw_timeout()
971 		host->data_timeout += MMC_CMD_TRANSFER_TIME;  in sdhci_calc_sw_timeout()
974 static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,  in sdhci_calc_timeout()  argument
984 	 * If the host controller provides us with an incorrect timeout  in sdhci_calc_timeout()
989 	if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)  in sdhci_calc_timeout()
990 		return host->max_timeout_count;  in sdhci_calc_timeout()
994 		return host->max_timeout_count;  in sdhci_calc_timeout()
999 		return host->max_timeout_count;  in sdhci_calc_timeout()
1002 	target_timeout = sdhci_target_timeout(host, cmd, data);  in sdhci_calc_timeout()
1010 	 * (2) host->timeout_clk < 2^16  in sdhci_calc_timeout()
1015 	current_timeout = (1 << 13) * 1000 / host->timeout_clk;  in sdhci_calc_timeout()
1019 		if (count > host->max_timeout_count) {  in sdhci_calc_timeout()
1020 			if (!(host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT))  in sdhci_calc_timeout()
1023 			count = host->max_timeout_count;  in sdhci_calc_timeout()
1032 static void sdhci_set_transfer_irqs(struct sdhci_host *host)  in sdhci_set_transfer_irqs()  argument
1037 	if (host->flags & SDHCI_REQ_USE_DMA)  in sdhci_set_transfer_irqs()
1038 		host->ier = (host->ier & ~pio_irqs) | dma_irqs;  in sdhci_set_transfer_irqs()
1040 		host->ier = (host->ier & ~dma_irqs) | pio_irqs;  in sdhci_set_transfer_irqs()
1042 	if (host->flags & (SDHCI_AUTO_CMD23 | SDHCI_AUTO_CMD12))  in sdhci_set_transfer_irqs()
1043 		host->ier |= SDHCI_INT_AUTO_CMD_ERR;  in sdhci_set_transfer_irqs()
1045 		host->ier &= ~SDHCI_INT_AUTO_CMD_ERR;  in sdhci_set_transfer_irqs()
1047 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_transfer_irqs()
1048 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_transfer_irqs()
1051 void sdhci_set_data_timeout_irq(struct sdhci_host *host, bool enable)  in sdhci_set_data_timeout_irq()  argument
1054 		host->ier |= SDHCI_INT_DATA_TIMEOUT;  in sdhci_set_data_timeout_irq()
1056 		host->ier &= ~SDHCI_INT_DATA_TIMEOUT;  in sdhci_set_data_timeout_irq()
1057 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_data_timeout_irq()
1058 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_data_timeout_irq()
1062 void __sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)  in __sdhci_set_timeout()  argument
1065 	u8 count = sdhci_calc_timeout(host, cmd, &too_big);  in __sdhci_set_timeout()
1068 	    host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT) {  in __sdhci_set_timeout()
1069 		sdhci_calc_sw_timeout(host, cmd);  in __sdhci_set_timeout()
1070 		sdhci_set_data_timeout_irq(host, false);  in __sdhci_set_timeout()
1071 	} else if (!(host->ier & SDHCI_INT_DATA_TIMEOUT)) {  in __sdhci_set_timeout()
1072 		sdhci_set_data_timeout_irq(host, true);  in __sdhci_set_timeout()
1075 	sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL);  in __sdhci_set_timeout()
1079 static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_set_timeout()  argument
1081 	if (host->ops->set_timeout)  in sdhci_set_timeout()
1082 		host->ops->set_timeout(host, cmd);  in sdhci_set_timeout()
1084 		__sdhci_set_timeout(host, cmd);  in sdhci_set_timeout()
1087 static void sdhci_initialize_data(struct sdhci_host *host,  in sdhci_initialize_data()  argument
1090 	WARN_ON(host->data);  in sdhci_initialize_data()
1094 	BUG_ON(data->blksz > host->mmc->max_blk_size);  in sdhci_initialize_data()
1097 	host->data = data;  in sdhci_initialize_data()
1098 	host->data_early = 0;  in sdhci_initialize_data()
1099 	host->data->bytes_xfered = 0;  in sdhci_initialize_data()
1102 static inline void sdhci_set_block_info(struct sdhci_host *host,  in sdhci_set_block_info()  argument
1106 	sdhci_writew(host,  in sdhci_set_block_info()
1107 		     SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),  in sdhci_set_block_info()
1113 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&  in sdhci_set_block_info()
1114 	    (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {  in sdhci_set_block_info()
1115 		if (sdhci_readw(host, SDHCI_BLOCK_COUNT))  in sdhci_set_block_info()
1116 			sdhci_writew(host, 0, SDHCI_BLOCK_COUNT);  in sdhci_set_block_info()
1117 		sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);  in sdhci_set_block_info()
1119 		sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);  in sdhci_set_block_info()
1123 static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_prepare_data()  argument
1127 	sdhci_initialize_data(host, data);  in sdhci_prepare_data()
1129 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_prepare_data()
1134 		host->flags |= SDHCI_REQ_USE_DMA;  in sdhci_prepare_data()
1145 		if (host->flags & SDHCI_USE_ADMA) {  in sdhci_prepare_data()
1146 			if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) {  in sdhci_prepare_data()
1156 			if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE)  in sdhci_prepare_data()
1158 			if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR)  in sdhci_prepare_data()
1167 					host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_data()
1172 					host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_data()
1179 	if (host->flags & SDHCI_REQ_USE_DMA) {  in sdhci_prepare_data()
1180 		int sg_cnt = sdhci_pre_dma_transfer(host, data, COOKIE_MAPPED);  in sdhci_prepare_data()
1188 			host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_data()
1189 		} else if (host->flags & SDHCI_USE_ADMA) {  in sdhci_prepare_data()
1190 			sdhci_adma_table_pre(host, data, sg_cnt);  in sdhci_prepare_data()
1191 			sdhci_set_adma_addr(host, host->adma_addr);  in sdhci_prepare_data()
1194 			sdhci_set_sdma_addr(host, sdhci_sdma_address(host));  in sdhci_prepare_data()
1198 	sdhci_config_dma(host);  in sdhci_prepare_data()
1200 	if (!(host->flags & SDHCI_REQ_USE_DMA)) {  in sdhci_prepare_data()
1204 		if (host->data->flags & MMC_DATA_READ)  in sdhci_prepare_data()
1208 		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);  in sdhci_prepare_data()
1209 		host->blocks = data->blocks;  in sdhci_prepare_data()
1212 	sdhci_set_transfer_irqs(host);  in sdhci_prepare_data()
1214 	sdhci_set_block_info(host, data);  in sdhci_prepare_data()
1219 static int sdhci_external_dma_init(struct sdhci_host *host)  in sdhci_external_dma_init()  argument
1222 	struct mmc_host *mmc = host->mmc;  in sdhci_external_dma_init()
1224 	host->tx_chan = dma_request_chan(mmc_dev(mmc), "tx");  in sdhci_external_dma_init()
1225 	if (IS_ERR(host->tx_chan)) {  in sdhci_external_dma_init()
1226 		ret = PTR_ERR(host->tx_chan);  in sdhci_external_dma_init()
1229 		host->tx_chan = NULL;  in sdhci_external_dma_init()
1233 	host->rx_chan = dma_request_chan(mmc_dev(mmc), "rx");  in sdhci_external_dma_init()
1234 	if (IS_ERR(host->rx_chan)) {  in sdhci_external_dma_init()
1235 		if (host->tx_chan) {  in sdhci_external_dma_init()
1236 			dma_release_channel(host->tx_chan);  in sdhci_external_dma_init()
1237 			host->tx_chan = NULL;  in sdhci_external_dma_init()
1240 		ret = PTR_ERR(host->rx_chan);  in sdhci_external_dma_init()
1243 		host->rx_chan = NULL;  in sdhci_external_dma_init()
1249 static struct dma_chan *sdhci_external_dma_channel(struct sdhci_host *host,  in sdhci_external_dma_channel()  argument
1252 	return data->flags & MMC_DATA_WRITE ? host->tx_chan : host->rx_chan;  in sdhci_external_dma_channel()
1255 static int sdhci_external_dma_setup(struct sdhci_host *host,  in sdhci_external_dma_setup()  argument
1267 	if (!host->mapbase)  in sdhci_external_dma_setup()
1271 	cfg.src_addr = host->mapbase + SDHCI_BUFFER;  in sdhci_external_dma_setup()
1272 	cfg.dst_addr = host->mapbase + SDHCI_BUFFER;  in sdhci_external_dma_setup()
1284 	chan = sdhci_external_dma_channel(host, data);  in sdhci_external_dma_setup()
1290 	sg_cnt = sdhci_pre_dma_transfer(host, data, COOKIE_MAPPED);  in sdhci_external_dma_setup()
1310 static void sdhci_external_dma_release(struct sdhci_host *host)  in sdhci_external_dma_release()  argument
1312 	if (host->tx_chan) {  in sdhci_external_dma_release()
1313 		dma_release_channel(host->tx_chan);  in sdhci_external_dma_release()
1314 		host->tx_chan = NULL;  in sdhci_external_dma_release()
1317 	if (host->rx_chan) {  in sdhci_external_dma_release()
1318 		dma_release_channel(host->rx_chan);  in sdhci_external_dma_release()
1319 		host->rx_chan = NULL;  in sdhci_external_dma_release()
1322 	sdhci_switch_external_dma(host, false);  in sdhci_external_dma_release()
1325 static void __sdhci_external_dma_prepare_data(struct sdhci_host *host,  in __sdhci_external_dma_prepare_data()  argument
1330 	sdhci_initialize_data(host, data);  in __sdhci_external_dma_prepare_data()
1332 	host->flags |= SDHCI_REQ_USE_DMA;  in __sdhci_external_dma_prepare_data()
1333 	sdhci_set_transfer_irqs(host);  in __sdhci_external_dma_prepare_data()
1335 	sdhci_set_block_info(host, data);  in __sdhci_external_dma_prepare_data()
1338 static void sdhci_external_dma_prepare_data(struct sdhci_host *host,  in sdhci_external_dma_prepare_data()  argument
1341 	if (!sdhci_external_dma_setup(host, cmd)) {  in sdhci_external_dma_prepare_data()
1342 		__sdhci_external_dma_prepare_data(host, cmd);  in sdhci_external_dma_prepare_data()
1344 		sdhci_external_dma_release(host);  in sdhci_external_dma_prepare_data()
1346 		       mmc_hostname(host->mmc));  in sdhci_external_dma_prepare_data()
1347 		sdhci_prepare_data(host, cmd);  in sdhci_external_dma_prepare_data()
1351 static void sdhci_external_dma_pre_transfer(struct sdhci_host *host,  in sdhci_external_dma_pre_transfer()  argument
1359 	chan = sdhci_external_dma_channel(host, cmd->data);  in sdhci_external_dma_pre_transfer()
1366 static inline int sdhci_external_dma_init(struct sdhci_host *host)  in sdhci_external_dma_init()  argument
1371 static inline void sdhci_external_dma_release(struct sdhci_host *host)  in sdhci_external_dma_release()  argument
1375 static inline void sdhci_external_dma_prepare_data(struct sdhci_host *host,  in sdhci_external_dma_prepare_data()  argument
1382 static inline void sdhci_external_dma_pre_transfer(struct sdhci_host *host,  in sdhci_external_dma_pre_transfer()  argument
1387 static inline struct dma_chan *sdhci_external_dma_channel(struct sdhci_host *host,  in sdhci_external_dma_channel()  argument
1395 void sdhci_switch_external_dma(struct sdhci_host *host, bool en)  in sdhci_switch_external_dma()  argument
1397 	host->use_external_dma = en;  in sdhci_switch_external_dma()
1401 static inline bool sdhci_auto_cmd12(struct sdhci_host *host,  in sdhci_auto_cmd12()  argument
1404 	return !mrq->sbc && (host->flags & SDHCI_AUTO_CMD12) &&  in sdhci_auto_cmd12()
1408 static inline bool sdhci_auto_cmd23(struct sdhci_host *host,  in sdhci_auto_cmd23()  argument
1411 	return mrq->sbc && (host->flags & SDHCI_AUTO_CMD23);  in sdhci_auto_cmd23()
1414 static inline bool sdhci_manual_cmd23(struct sdhci_host *host,  in sdhci_manual_cmd23()  argument
1417 	return mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23);  in sdhci_manual_cmd23()
1420 static inline void sdhci_auto_cmd_select(struct sdhci_host *host,  in sdhci_auto_cmd_select()  argument
1424 	bool use_cmd12 = sdhci_auto_cmd12(host, cmd->mrq) &&  in sdhci_auto_cmd_select()
1426 	bool use_cmd23 = sdhci_auto_cmd23(host, cmd->mrq);  in sdhci_auto_cmd_select()
1435 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&  in sdhci_auto_cmd_select()
1439 		ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_auto_cmd_select()
1444 		sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);  in sdhci_auto_cmd_select()
1459 static void sdhci_set_transfer_mode(struct sdhci_host *host,  in sdhci_set_transfer_mode()  argument
1466 		if (host->quirks2 &  in sdhci_set_transfer_mode()
1470 				sdhci_writew(host, 0x0, SDHCI_TRANSFER_MODE);  in sdhci_set_transfer_mode()
1473 			mode = sdhci_readw(host, SDHCI_TRANSFER_MODE);  in sdhci_set_transfer_mode()
1474 			sdhci_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 |  in sdhci_set_transfer_mode()
1480 	WARN_ON(!host->data);  in sdhci_set_transfer_mode()
1482 	if (!(host->quirks2 & SDHCI_QUIRK2_SUPPORT_SINGLE))  in sdhci_set_transfer_mode()
1487 		sdhci_auto_cmd_select(host, cmd, &mode);  in sdhci_set_transfer_mode()
1488 		if (sdhci_auto_cmd23(host, cmd->mrq))  in sdhci_set_transfer_mode()
1489 			sdhci_writel(host, cmd->mrq->sbc->arg, SDHCI_ARGUMENT2);  in sdhci_set_transfer_mode()
1494 	if (host->flags & SDHCI_REQ_USE_DMA)  in sdhci_set_transfer_mode()
1497 	sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);  in sdhci_set_transfer_mode()
1500 static bool sdhci_needs_reset(struct sdhci_host *host, struct mmc_request *mrq)  in sdhci_needs_reset()  argument
1502 	return (!(host->flags & SDHCI_DEVICE_DEAD) &&  in sdhci_needs_reset()
1506 		 (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)));  in sdhci_needs_reset()
1509 static void sdhci_set_mrq_done(struct sdhci_host *host, struct mmc_request *mrq)  in sdhci_set_mrq_done()  argument
1514 		if (host->mrqs_done[i] == mrq) {  in sdhci_set_mrq_done()
1521 		if (!host->mrqs_done[i]) {  in sdhci_set_mrq_done()
1522 			host->mrqs_done[i] = mrq;  in sdhci_set_mrq_done()
1530 static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)  in __sdhci_finish_mrq()  argument
1532 	if (host->cmd && host->cmd->mrq == mrq)  in __sdhci_finish_mrq()
1533 		host->cmd = NULL;  in __sdhci_finish_mrq()
1535 	if (host->data_cmd && host->data_cmd->mrq == mrq)  in __sdhci_finish_mrq()
1536 		host->data_cmd = NULL;  in __sdhci_finish_mrq()
1538 	if (host->deferred_cmd && host->deferred_cmd->mrq == mrq)  in __sdhci_finish_mrq()
1539 		host->deferred_cmd = NULL;  in __sdhci_finish_mrq()
1541 	if (host->data && host->data->mrq == mrq)  in __sdhci_finish_mrq()
1542 		host->data = NULL;  in __sdhci_finish_mrq()
1544 	if (sdhci_needs_reset(host, mrq))  in __sdhci_finish_mrq()
1545 		host->pending_reset = true;  in __sdhci_finish_mrq()
1547 	sdhci_set_mrq_done(host, mrq);  in __sdhci_finish_mrq()
1549 	sdhci_del_timer(host, mrq);  in __sdhci_finish_mrq()
1551 	if (!sdhci_has_requests(host))  in __sdhci_finish_mrq()
1552 		sdhci_led_deactivate(host);  in __sdhci_finish_mrq()
1555 static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)  in sdhci_finish_mrq()  argument
1557 	__sdhci_finish_mrq(host, mrq);  in sdhci_finish_mrq()
1559 	queue_work(host->complete_wq, &host->complete_work);  in sdhci_finish_mrq()
1562 static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_timeout)  in __sdhci_finish_data()  argument
1564 	struct mmc_command *data_cmd = host->data_cmd;  in __sdhci_finish_data()
1565 	struct mmc_data *data = host->data;  in __sdhci_finish_data()
1567 	host->data = NULL;  in __sdhci_finish_data()
1568 	host->data_cmd = NULL;  in __sdhci_finish_data()
1575 		if (!host->cmd || host->cmd == data_cmd)  in __sdhci_finish_data()
1576 			sdhci_reset_for(host, REQUEST_ERROR);  in __sdhci_finish_data()
1578 			sdhci_reset_for(host, REQUEST_ERROR_DATA_ONLY);  in __sdhci_finish_data()
1581 	if ((host->flags & (SDHCI_REQ_USE_DMA | SDHCI_USE_ADMA)) ==  in __sdhci_finish_data()
1583 		sdhci_adma_table_post(host, data);  in __sdhci_finish_data()
1603 	    ((!data->mrq->sbc && !sdhci_auto_cmd12(host, data->mrq)) ||  in __sdhci_finish_data()
1611 			__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1614 			host->cmd = NULL;  in __sdhci_finish_data()
1615 			if (!sdhci_send_command(host, data->stop)) {  in __sdhci_finish_data()
1622 					__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1624 					WARN_ON(host->deferred_cmd);  in __sdhci_finish_data()
1625 					host->deferred_cmd = data->stop;  in __sdhci_finish_data()
1630 		__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1634 static void sdhci_finish_data(struct sdhci_host *host)  in sdhci_finish_data()  argument
1636 	__sdhci_finish_data(host, false);  in sdhci_finish_data()
1639 static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_send_command()  argument
1645 	WARN_ON(host->cmd);  in sdhci_send_command()
1650 	if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&  in sdhci_send_command()
1663 	if (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask)  in sdhci_send_command()
1666 	host->cmd = cmd;  in sdhci_send_command()
1667 	host->data_timeout = 0;  in sdhci_send_command()
1669 		WARN_ON(host->data_cmd);  in sdhci_send_command()
1670 		host->data_cmd = cmd;  in sdhci_send_command()
1671 		sdhci_set_timeout(host, cmd);  in sdhci_send_command()
1675 		if (host->use_external_dma)  in sdhci_send_command()
1676 			sdhci_external_dma_prepare_data(host, cmd);  in sdhci_send_command()
1678 			sdhci_prepare_data(host, cmd);  in sdhci_send_command()
1681 	sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);  in sdhci_send_command()
1683 	sdhci_set_transfer_mode(host, cmd);  in sdhci_send_command()
1715 	if (host->data_timeout)  in sdhci_send_command()
1716 		timeout += nsecs_to_jiffies(host->data_timeout);  in sdhci_send_command()
1721 	sdhci_mod_timer(host, cmd->mrq, timeout);  in sdhci_send_command()
1723 	if (host->use_external_dma)  in sdhci_send_command()
1724 		sdhci_external_dma_pre_transfer(host, cmd);  in sdhci_send_command()
1726 	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);  in sdhci_send_command()
1731 static bool sdhci_present_error(struct sdhci_host *host,  in sdhci_present_error()  argument
1734 	if (!present || host->flags & SDHCI_DEVICE_DEAD) {  in sdhci_present_error()
1742 static bool sdhci_send_command_retry(struct sdhci_host *host,  in sdhci_send_command_retry()  argument
1745 	__releases(host->lock)  in sdhci_send_command_retry()
1746 	__acquires(host->lock)  in sdhci_send_command_retry()
1748 	struct mmc_command *deferred_cmd = host->deferred_cmd;  in sdhci_send_command_retry()
1752 	while (!sdhci_send_command(host, cmd)) {  in sdhci_send_command_retry()
1755 			       mmc_hostname(host->mmc));  in sdhci_send_command_retry()
1756 			sdhci_err_stats_inc(host, CTRL_TIMEOUT);  in sdhci_send_command_retry()
1757 			sdhci_dumpregs(host);  in sdhci_send_command_retry()
1762 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_command_retry()
1766 		present = host->mmc->ops->get_cd(host->mmc);  in sdhci_send_command_retry()
1768 		spin_lock_irqsave(&host->lock, flags);  in sdhci_send_command_retry()
1771 		if (cmd == deferred_cmd && cmd != host->deferred_cmd)  in sdhci_send_command_retry()
1774 		if (sdhci_present_error(host, cmd, present))  in sdhci_send_command_retry()
1778 	if (cmd == host->deferred_cmd)  in sdhci_send_command_retry()
1779 		host->deferred_cmd = NULL;  in sdhci_send_command_retry()
1784 static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_read_rsp_136()  argument
1790 		cmd->resp[i] = sdhci_readl(host, reg);  in sdhci_read_rsp_136()
1793 	if (host->quirks2 & SDHCI_QUIRK2_RSP_136_HAS_CRC)  in sdhci_read_rsp_136()
1804 static void sdhci_finish_command(struct sdhci_host *host)  in sdhci_finish_command()  argument
1806 	struct mmc_command *cmd = host->cmd;  in sdhci_finish_command()
1808 	host->cmd = NULL;  in sdhci_finish_command()
1812 			sdhci_read_rsp_136(host, cmd);  in sdhci_finish_command()
1814 			cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE);  in sdhci_finish_command()
1819 		mmc_command_done(host->mmc, cmd->mrq);  in sdhci_finish_command()
1822 	 * The host can send and interrupt when the busy state has  in sdhci_finish_command()
1834 		} else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) &&  in sdhci_finish_command()
1835 			   cmd == host->data_cmd) {  in sdhci_finish_command()
1843 		if (!sdhci_send_command(host, cmd->mrq->cmd)) {  in sdhci_finish_command()
1844 			WARN_ON(host->deferred_cmd);  in sdhci_finish_command()
1845 			host->deferred_cmd = cmd->mrq->cmd;  in sdhci_finish_command()
1850 		if (host->data && host->data_early)  in sdhci_finish_command()
1851 			sdhci_finish_data(host);  in sdhci_finish_command()
1854 			__sdhci_finish_mrq(host, cmd->mrq);  in sdhci_finish_command()
1858 static u16 sdhci_get_preset_value(struct sdhci_host *host)  in sdhci_get_preset_value()  argument
1862 	switch (host->timing) {  in sdhci_get_preset_value()
1865 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_HIGH_SPEED);  in sdhci_get_preset_value()
1868 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12);  in sdhci_get_preset_value()
1871 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR25);  in sdhci_get_preset_value()
1874 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR50);  in sdhci_get_preset_value()
1878 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);  in sdhci_get_preset_value()
1882 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);  in sdhci_get_preset_value()
1885 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_HS400);  in sdhci_get_preset_value()
1889 			mmc_hostname(host->mmc));  in sdhci_get_preset_value()
1890 		preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR12);  in sdhci_get_preset_value()
1896 u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,  in sdhci_calc_clk()  argument
1904 	if (host->version >= SDHCI_SPEC_300) {  in sdhci_calc_clk()
1905 		if (host->preset_enabled) {  in sdhci_calc_clk()
1908 			clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);  in sdhci_calc_clk()
1909 			pre_val = sdhci_get_preset_value(host);  in sdhci_calc_clk()
1911 			if (host->clk_mul &&  in sdhci_calc_clk()
1915 				clk_mul = host->clk_mul;  in sdhci_calc_clk()
1923 		 * Check if the Host Controller supports Programmable Clock  in sdhci_calc_clk()
1926 		if (host->clk_mul) {  in sdhci_calc_clk()
1928 				if ((host->max_clk * host->clk_mul / div)  in sdhci_calc_clk()
1932 			if ((host->max_clk * host->clk_mul / div) <= clock) {  in sdhci_calc_clk()
1939 				clk_mul = host->clk_mul;  in sdhci_calc_clk()
1950 		if (!host->clk_mul || switch_base_clk) {  in sdhci_calc_clk()
1952 			if (host->max_clk <= clock)  in sdhci_calc_clk()
1957 					if ((host->max_clk / div) <= clock)  in sdhci_calc_clk()
1963 			if ((host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN)  in sdhci_calc_clk()
1964 				&& !div && host->max_clk <= 25000000)  in sdhci_calc_clk()
1970 			if ((host->max_clk / div) <= clock)  in sdhci_calc_clk()
1979 		*actual_clock = (host->max_clk * clk_mul) / real_div;  in sdhci_calc_clk()
1988 void sdhci_enable_clk(struct sdhci_host *host, u16 clk)  in sdhci_enable_clk()  argument
1993 	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);  in sdhci_enable_clk()
2000 		clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);  in sdhci_enable_clk()
2005 			       mmc_hostname(host->mmc));  in sdhci_enable_clk()
2006 			sdhci_err_stats_inc(host, CTRL_TIMEOUT);  in sdhci_enable_clk()
2007 			sdhci_dumpregs(host);  in sdhci_enable_clk()
2013 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode) {  in sdhci_enable_clk()
2016 		sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);  in sdhci_enable_clk()
2023 			clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);  in sdhci_enable_clk()
2028 				       mmc_hostname(host->mmc));  in sdhci_enable_clk()
2029 				sdhci_err_stats_inc(host, CTRL_TIMEOUT);  in sdhci_enable_clk()
2030 				sdhci_dumpregs(host);  in sdhci_enable_clk()
2038 	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);  in sdhci_enable_clk()
2042 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)  in sdhci_set_clock()  argument
2046 	host->mmc->actual_clock = 0;  in sdhci_set_clock()
2048 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);  in sdhci_set_clock()
2053 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);  in sdhci_set_clock()
2054 	sdhci_enable_clk(host, clk);  in sdhci_set_clock()
2058 static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,  in sdhci_set_power_reg()  argument
2061 	struct mmc_host *mmc = host->mmc;  in sdhci_set_power_reg()
2066 		sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL);  in sdhci_set_power_reg()
2068 		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);  in sdhci_set_power_reg()
2071 void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,  in sdhci_set_power_noreg()  argument
2104 			     mmc_hostname(host->mmc), vdd);  in sdhci_set_power_noreg()
2109 	if (host->pwr == pwr)  in sdhci_set_power_noreg()
2112 	host->pwr = pwr;  in sdhci_set_power_noreg()
2115 		sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);  in sdhci_set_power_noreg()
2116 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_set_power_noreg()
2117 			sdhci_runtime_pm_bus_off(host);  in sdhci_set_power_noreg()
2123 		if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))  in sdhci_set_power_noreg()
2124 			sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);  in sdhci_set_power_noreg()
2131 		if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)  in sdhci_set_power_noreg()
2132 			sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);  in sdhci_set_power_noreg()
2136 		sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);  in sdhci_set_power_noreg()
2138 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_set_power_noreg()
2139 			sdhci_runtime_pm_bus_on(host);  in sdhci_set_power_noreg()
2145 		if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)  in sdhci_set_power_noreg()
2151 void sdhci_set_power(struct sdhci_host *host, unsigned char mode,  in sdhci_set_power()  argument
2154 	if (IS_ERR(host->mmc->supply.vmmc))  in sdhci_set_power()
2155 		sdhci_set_power_noreg(host, mode, vdd);  in sdhci_set_power()
2157 		sdhci_set_power_reg(host, mode, vdd);  in sdhci_set_power()
2167 void sdhci_set_power_and_bus_voltage(struct sdhci_host *host,  in sdhci_set_power_and_bus_voltage()  argument
2171 	if (!IS_ERR(host->mmc->supply.vmmc)) {  in sdhci_set_power_and_bus_voltage()
2172 		struct mmc_host *mmc = host->mmc;  in sdhci_set_power_and_bus_voltage()
2176 	sdhci_set_power_noreg(host, mode, vdd);  in sdhci_set_power_and_bus_voltage()
2188 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_request()  local
2196 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request()
2198 	sdhci_led_activate(host);  in sdhci_request()
2200 	if (sdhci_present_error(host, mrq->cmd, present))  in sdhci_request()
2203 	cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;  in sdhci_request()
2205 	if (!sdhci_send_command_retry(host, cmd, flags))  in sdhci_request()
2208 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request()
2213 	sdhci_finish_mrq(host, mrq);  in sdhci_request()
2214 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request()
2220 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_request_atomic()  local
2225 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request_atomic()
2227 	if (sdhci_present_error(host, mrq->cmd, true)) {  in sdhci_request_atomic()
2228 		sdhci_finish_mrq(host, mrq);  in sdhci_request_atomic()
2232 	cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;  in sdhci_request_atomic()
2241 	if (!sdhci_send_command(host, cmd))  in sdhci_request_atomic()
2244 		sdhci_led_activate(host);  in sdhci_request_atomic()
2247 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_atomic()
2252 void sdhci_set_bus_width(struct sdhci_host *host, int width)  in sdhci_set_bus_width()  argument
2256 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in sdhci_set_bus_width()
2261 		if (host->mmc->caps & MMC_CAP_8_BIT_DATA)  in sdhci_set_bus_width()
2268 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_set_bus_width()
2272 void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)  in sdhci_set_uhs_signaling()  argument
2276 	ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_set_uhs_signaling()
2277 	/* Select Bus Speed Mode for host */  in sdhci_set_uhs_signaling()
2293 	sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);  in sdhci_set_uhs_signaling()
2311 static bool sdhci_preset_needed(struct sdhci_host *host, unsigned char timing)  in sdhci_preset_needed()  argument
2313 	return !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) &&  in sdhci_preset_needed()
2317 static bool sdhci_presetable_values_change(struct sdhci_host *host, struct mmc_ios *ios)  in sdhci_presetable_values_change()  argument
2324 	return !host->preset_enabled &&  in sdhci_presetable_values_change()
2325 	       (sdhci_preset_needed(host, ios->timing) || host->drv_type != ios->drv_type);  in sdhci_presetable_values_change()
2330 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_set_ios()  local
2331 	bool reinit_uhs = host->reinit_uhs;  in sdhci_set_ios()
2335 	host->reinit_uhs = false;  in sdhci_set_ios()
2340 	if (host->flags & SDHCI_DEVICE_DEAD) {  in sdhci_set_ios()
2352 		sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);  in sdhci_set_ios()
2353 		sdhci_reinit(host);  in sdhci_set_ios()
2356 	if (host->version >= SDHCI_SPEC_300 &&  in sdhci_set_ios()
2358 		!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN))  in sdhci_set_ios()
2359 		sdhci_enable_preset_value(host, false);  in sdhci_set_ios()
2361 	if (!ios->clock || ios->clock != host->clock) {  in sdhci_set_ios()
2362 		turning_on_clk = ios->clock && !host->clock;  in sdhci_set_ios()
2364 		host->ops->set_clock(host, ios->clock);  in sdhci_set_ios()
2365 		host->clock = ios->clock;  in sdhci_set_ios()
2367 		if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK &&  in sdhci_set_ios()
2368 		    host->clock) {  in sdhci_set_ios()
2369 			host->timeout_clk = mmc->actual_clock ?  in sdhci_set_ios()
2371 						host->clock / 1000;  in sdhci_set_ios()
2373 				host->ops->get_max_timeout_count ?  in sdhci_set_ios()
2374 				host->ops->get_max_timeout_count(host) :  in sdhci_set_ios()
2376 			mmc->max_busy_timeout /= host->timeout_clk;  in sdhci_set_ios()
2380 	if (host->ops->set_power)  in sdhci_set_ios()
2381 		host->ops->set_power(host, ios->power_mode, ios->vdd);  in sdhci_set_ios()
2383 		sdhci_set_power(host, ios->power_mode, ios->vdd);  in sdhci_set_ios()
2385 	if (host->ops->platform_send_init_74_clocks)  in sdhci_set_ios()
2386 		host->ops->platform_send_init_74_clocks(host, ios->power_mode);  in sdhci_set_ios()
2388 	host->ops->set_bus_width(host, ios->bus_width);  in sdhci_set_ios()
2396 	    host->timing == ios->timing &&  in sdhci_set_ios()
2397 	    host->version >= SDHCI_SPEC_300 &&  in sdhci_set_ios()
2398 	    !sdhci_presetable_values_change(host, ios))  in sdhci_set_ios()
2401 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in sdhci_set_ios()
2403 	if (!(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) {  in sdhci_set_ios()
2418 	if (host->version >= SDHCI_SPEC_300) {  in sdhci_set_ios()
2421 		if (!host->preset_enabled) {  in sdhci_set_ios()
2422 			sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_set_ios()
2427 			ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_set_ios()
2443 			sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);  in sdhci_set_ios()
2444 			host->drv_type = ios->drv_type;  in sdhci_set_ios()
2448 			 * Enable in the Host Control 2 register is set, we  in sdhci_set_ios()
2454 			clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);  in sdhci_set_ios()
2456 			sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);  in sdhci_set_ios()
2458 			sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_set_ios()
2461 			host->ops->set_clock(host, host->clock);  in sdhci_set_ios()
2465 		clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);  in sdhci_set_ios()
2467 		sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);  in sdhci_set_ios()
2469 		host->ops->set_uhs_signaling(host, ios->timing);  in sdhci_set_ios()
2470 		host->timing = ios->timing;  in sdhci_set_ios()
2472 		if (sdhci_preset_needed(host, ios->timing)) {  in sdhci_set_ios()
2475 			sdhci_enable_preset_value(host, true);  in sdhci_set_ios()
2476 			preset = sdhci_get_preset_value(host);  in sdhci_set_ios()
2479 			host->drv_type = ios->drv_type;  in sdhci_set_ios()
2483 		host->ops->set_clock(host, host->clock);  in sdhci_set_ios()
2485 		sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_set_ios()
2491 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_get_cd()  local
2494 	if (host->flags & SDHCI_DEVICE_DEAD)  in sdhci_get_cd()
2509 	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)  in sdhci_get_cd()
2512 	/* Host native card detect */  in sdhci_get_cd()
2513 	return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);  in sdhci_get_cd()
2518 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_get_cd_nogpio()  local
2522 	spin_lock_irqsave(&host->lock, flags);  in sdhci_get_cd_nogpio()
2524 	if (host->flags & SDHCI_DEVICE_DEAD)  in sdhci_get_cd_nogpio()
2527 	ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);  in sdhci_get_cd_nogpio()
2529 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_get_cd_nogpio()
2535 static int sdhci_check_ro(struct sdhci_host *host)  in sdhci_check_ro()  argument
2540 	spin_lock_irqsave(&host->lock, flags);  in sdhci_check_ro()
2542 	if (host->flags & SDHCI_DEVICE_DEAD)  in sdhci_check_ro()
2544 	else if (host->ops->get_ro)  in sdhci_check_ro()
2545 		is_readonly = host->ops->get_ro(host);  in sdhci_check_ro()
2546 	else if (mmc_can_gpio_ro(host->mmc))  in sdhci_check_ro()
2547 		is_readonly = mmc_gpio_get_ro(host->mmc);  in sdhci_check_ro()
2549 		is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE)  in sdhci_check_ro()
2552 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_check_ro()
2555 	return host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT ?  in sdhci_check_ro()
2563 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_get_ro()  local
2566 	if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT))  in sdhci_get_ro()
2567 		return sdhci_check_ro(host);  in sdhci_get_ro()
2571 		if (sdhci_check_ro(host)) {  in sdhci_get_ro()
2582 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_hw_reset()  local
2584 	if (host->ops && host->ops->hw_reset)  in sdhci_hw_reset()
2585 		host->ops->hw_reset(host);  in sdhci_hw_reset()
2588 static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)  in sdhci_enable_sdio_irq_nolock()  argument
2590 	if (!(host->flags & SDHCI_DEVICE_DEAD)) {  in sdhci_enable_sdio_irq_nolock()
2592 			host->ier |= SDHCI_INT_CARD_INT;  in sdhci_enable_sdio_irq_nolock()
2594 			host->ier &= ~SDHCI_INT_CARD_INT;  in sdhci_enable_sdio_irq_nolock()
2596 		sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_enable_sdio_irq_nolock()
2597 		sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_enable_sdio_irq_nolock()
2603 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_enable_sdio_irq()  local
2609 	spin_lock_irqsave(&host->lock, flags);  in sdhci_enable_sdio_irq()
2610 	sdhci_enable_sdio_irq_nolock(host, enable);  in sdhci_enable_sdio_irq()
2611 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_enable_sdio_irq()
2620 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_ack_sdio_irq()  local
2623 	spin_lock_irqsave(&host->lock, flags);  in sdhci_ack_sdio_irq()
2624 	sdhci_enable_sdio_irq_nolock(host, true);  in sdhci_ack_sdio_irq()
2625 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_ack_sdio_irq()
2631 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_start_signal_voltage_switch()  local
2636 	 * Signal Voltage Switching is only applicable for Host Controllers  in sdhci_start_signal_voltage_switch()
2639 	if (host->version < SDHCI_SPEC_300)  in sdhci_start_signal_voltage_switch()
2642 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_start_signal_voltage_switch()
2646 		if (!(host->flags & SDHCI_SIGNALING_330))  in sdhci_start_signal_voltage_switch()
2648 		/* Set 1.8V Signal Enable in the Host Control2 register to 0 */  in sdhci_start_signal_voltage_switch()
2650 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);  in sdhci_start_signal_voltage_switch()
2664 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_start_signal_voltage_switch()
2673 		if (!(host->flags & SDHCI_SIGNALING_180))  in sdhci_start_signal_voltage_switch()
2685 		 * Enable 1.8V Signal Enable in the Host Control2  in sdhci_start_signal_voltage_switch()
2689 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);  in sdhci_start_signal_voltage_switch()
2692 		if (host->ops->voltage_switch)  in sdhci_start_signal_voltage_switch()
2693 			host->ops->voltage_switch(host);  in sdhci_start_signal_voltage_switch()
2696 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_start_signal_voltage_switch()
2705 		if (!(host->flags & SDHCI_SIGNALING_120))  in sdhci_start_signal_voltage_switch()
2725 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_card_busy()  local
2729 	present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);  in sdhci_card_busy()
2736 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_prepare_hs400_tuning()  local
2739 	spin_lock_irqsave(&host->lock, flags);  in sdhci_prepare_hs400_tuning()
2740 	host->flags |= SDHCI_HS400_TUNING;  in sdhci_prepare_hs400_tuning()
2741 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_prepare_hs400_tuning()
2746 void sdhci_start_tuning(struct sdhci_host *host)  in sdhci_start_tuning()  argument
2750 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_start_tuning()
2752 	if (host->quirks2 & SDHCI_QUIRK2_TUNING_WORK_AROUND)  in sdhci_start_tuning()
2754 	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);  in sdhci_start_tuning()
2757 	 * As per the Host Controller spec v3.00, tuning command  in sdhci_start_tuning()
2766 	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_INT_ENABLE);  in sdhci_start_tuning()
2767 	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_SIGNAL_ENABLE);  in sdhci_start_tuning()
2771 void sdhci_end_tuning(struct sdhci_host *host)  in sdhci_end_tuning()  argument
2773 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_end_tuning()
2774 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_end_tuning()
2778 void sdhci_reset_tuning(struct sdhci_host *host)  in sdhci_reset_tuning()  argument
2782 	ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_reset_tuning()
2785 	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);  in sdhci_reset_tuning()
2789 void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode)  in sdhci_abort_tuning()  argument
2791 	sdhci_reset_tuning(host);  in sdhci_abort_tuning()
2793 	sdhci_reset_for(host, TUNING_ABORT);  in sdhci_abort_tuning()
2795 	sdhci_end_tuning(host);  in sdhci_abort_tuning()
2797 	mmc_send_abort_tuning(host->mmc, opcode);  in sdhci_abort_tuning()
2808 void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)  in sdhci_send_tuning()  argument
2810 	struct mmc_host *mmc = host->mmc;  in sdhci_send_tuning()
2814 	u32 b = host->sdma_boundary;  in sdhci_send_tuning()
2816 	spin_lock_irqsave(&host->lock, flags);  in sdhci_send_tuning()
2825 	 * block to the Host Controller. So we set the block size  in sdhci_send_tuning()
2830 		sdhci_writew(host, SDHCI_MAKE_BLKSZ(b, 128), SDHCI_BLOCK_SIZE);  in sdhci_send_tuning()
2832 		sdhci_writew(host, SDHCI_MAKE_BLKSZ(b, 64), SDHCI_BLOCK_SIZE);  in sdhci_send_tuning()
2835 	 * The tuning block is sent by the card to the host controller.  in sdhci_send_tuning()
2840 	sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE);  in sdhci_send_tuning()
2842 	if (!sdhci_send_command_retry(host, &cmd, flags)) {  in sdhci_send_tuning()
2843 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_tuning()
2844 		host->tuning_done = 0;  in sdhci_send_tuning()
2848 	host->cmd = NULL;  in sdhci_send_tuning()
2850 	sdhci_del_timer(host, &mrq);  in sdhci_send_tuning()
2852 	host->tuning_done = 0;  in sdhci_send_tuning()
2854 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_tuning()
2857 	wait_event_timeout(host->buf_ready_int, (host->tuning_done == 1),  in sdhci_send_tuning()
2863 static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)  in __sdhci_execute_tuning()  argument
2871 	for (i = 0; i < host->tuning_loop_count; i++) {  in __sdhci_execute_tuning()
2874 		sdhci_send_tuning(host, opcode);  in __sdhci_execute_tuning()
2876 		if (!host->tuning_done) {  in __sdhci_execute_tuning()
2878 				 mmc_hostname(host->mmc));  in __sdhci_execute_tuning()
2879 			sdhci_abort_tuning(host, opcode);  in __sdhci_execute_tuning()
2884 		if (host->tuning_delay > 0)  in __sdhci_execute_tuning()
2885 			mdelay(host->tuning_delay);  in __sdhci_execute_tuning()
2887 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in __sdhci_execute_tuning()
2897 		mmc_hostname(host->mmc));  in __sdhci_execute_tuning()
2898 	sdhci_reset_tuning(host);  in __sdhci_execute_tuning()
2904 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_execute_tuning()  local
2909 	hs400_tuning = host->flags & SDHCI_HS400_TUNING;  in sdhci_execute_tuning()
2911 	if (host->tuning_mode == SDHCI_TUNING_MODE_1)  in sdhci_execute_tuning()
2912 		tuning_count = host->tuning_count;  in sdhci_execute_tuning()
2915 	 * The Host Controller needs tuning in case of SDR104 and DDR50  in sdhci_execute_tuning()
2918 	 * If the Host Controller supports the HS200 mode then the  in sdhci_execute_tuning()
2921 	switch (host->timing) {  in sdhci_execute_tuning()
2941 		if (host->flags & SDHCI_SDR50_NEEDS_TUNING)  in sdhci_execute_tuning()
2949 	if (host->ops->platform_execute_tuning) {  in sdhci_execute_tuning()
2950 		err = host->ops->platform_execute_tuning(host, opcode);  in sdhci_execute_tuning()
2956 	if (host->tuning_delay < 0)  in sdhci_execute_tuning()
2957 		host->tuning_delay = opcode == MMC_SEND_TUNING_BLOCK;  in sdhci_execute_tuning()
2959 	sdhci_start_tuning(host);  in sdhci_execute_tuning()
2961 	host->tuning_err = __sdhci_execute_tuning(host, opcode);  in sdhci_execute_tuning()
2963 	sdhci_end_tuning(host);  in sdhci_execute_tuning()
2965 	host->flags &= ~SDHCI_HS400_TUNING;  in sdhci_execute_tuning()
2971 static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)  in sdhci_enable_preset_value()  argument
2973 	/* Host Controller v3.00 defines preset value registers */  in sdhci_enable_preset_value()
2974 	if (host->version < SDHCI_SPEC_300)  in sdhci_enable_preset_value()
2981 	if (host->preset_enabled != enable) {  in sdhci_enable_preset_value()
2982 		u16 ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);  in sdhci_enable_preset_value()
2989 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);  in sdhci_enable_preset_value()
2992 			host->flags |= SDHCI_PV_ENABLED;  in sdhci_enable_preset_value()
2994 			host->flags &= ~SDHCI_PV_ENABLED;  in sdhci_enable_preset_value()
2996 		host->preset_enabled = enable;  in sdhci_enable_preset_value()
3014 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_pre_req()  local
3023 	if (host->flags & SDHCI_REQ_USE_DMA && !host->bounce_buffer)  in sdhci_pre_req()
3024 		sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED);  in sdhci_pre_req()
3027 static void sdhci_error_out_mrqs(struct sdhci_host *host, int err)  in sdhci_error_out_mrqs()  argument
3029 	if (host->data_cmd) {  in sdhci_error_out_mrqs()
3030 		host->data_cmd->error = err;  in sdhci_error_out_mrqs()
3031 		sdhci_finish_mrq(host, host->data_cmd->mrq);  in sdhci_error_out_mrqs()
3034 	if (host->cmd) {  in sdhci_error_out_mrqs()
3035 		host->cmd->error = err;  in sdhci_error_out_mrqs()
3036 		sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_error_out_mrqs()
3042 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_card_event()  local
3047 	if (host->ops->card_event)  in sdhci_card_event()
3048 		host->ops->card_event(host);  in sdhci_card_event()
3052 	spin_lock_irqsave(&host->lock, flags);  in sdhci_card_event()
3055 	if (sdhci_has_requests(host) && !present) {  in sdhci_card_event()
3061 		sdhci_reset_for(host, CARD_REMOVED);  in sdhci_card_event()
3063 		sdhci_error_out_mrqs(host, -ENOMEDIUM);  in sdhci_card_event()
3066 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_card_event()
3092 static bool sdhci_request_done(struct sdhci_host *host)  in sdhci_request_done()  argument
3098 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request_done()
3101 		mrq = host->mrqs_done[i];  in sdhci_request_done()
3107 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3115 	if (sdhci_needs_reset(host, mrq)) {  in sdhci_request_done()
3119 		 * also be in mrqs_done, otherwise host->cmd and host->data_cmd  in sdhci_request_done()
3122 		if (host->cmd || host->data_cmd) {  in sdhci_request_done()
3123 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3128 		if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)  in sdhci_request_done()
3130 			host->ops->set_clock(host, host->clock);  in sdhci_request_done()
3132 		sdhci_reset_for(host, REQUEST_ERROR);  in sdhci_request_done()
3134 		host->pending_reset = false;  in sdhci_request_done()
3142 	if (host->flags & SDHCI_REQ_USE_DMA) {  in sdhci_request_done()
3145 		if (host->use_external_dma && data &&  in sdhci_request_done()
3147 			struct dma_chan *chan = sdhci_external_dma_channel(host, data);  in sdhci_request_done()
3149 			host->mrqs_done[i] = NULL;  in sdhci_request_done()
3150 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3152 			spin_lock_irqsave(&host->lock, flags);  in sdhci_request_done()
3153 			sdhci_set_mrq_done(host, mrq);  in sdhci_request_done()
3157 			if (host->bounce_buffer) {  in sdhci_request_done()
3165 					if (length > host->bounce_buffer_size) {  in sdhci_request_done()
3167 						       mmc_hostname(host->mmc),  in sdhci_request_done()
3168 						       host->bounce_buffer_size,  in sdhci_request_done()
3171 						length = host->bounce_buffer_size;  in sdhci_request_done()
3174 						mmc_dev(host->mmc),  in sdhci_request_done()
3175 						host->bounce_addr,  in sdhci_request_done()
3176 						host->bounce_buffer_size,  in sdhci_request_done()
3180 						host->bounce_buffer,  in sdhci_request_done()
3185 						mmc_dev(host->mmc),  in sdhci_request_done()
3186 						host->bounce_addr,  in sdhci_request_done()
3187 						host->bounce_buffer_size,  in sdhci_request_done()
3192 				dma_unmap_sg(mmc_dev(host->mmc), data->sg,  in sdhci_request_done()
3200 	host->mrqs_done[i] = NULL;  in sdhci_request_done()
3202 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3204 	if (host->ops->request_done)  in sdhci_request_done()
3205 		host->ops->request_done(host, mrq);  in sdhci_request_done()
3207 		mmc_request_done(host->mmc, mrq);  in sdhci_request_done()
3214 	struct sdhci_host *host = container_of(work, struct sdhci_host,  in sdhci_complete_work()  local
3217 	while (!sdhci_request_done(host))  in sdhci_complete_work()
3223 	struct sdhci_host *host;  in sdhci_timeout_timer()  local
3226 	host = from_timer(host, t, timer);  in sdhci_timeout_timer()
3228 	spin_lock_irqsave(&host->lock, flags);  in sdhci_timeout_timer()
3230 	if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {  in sdhci_timeout_timer()
3232 		       mmc_hostname(host->mmc));  in sdhci_timeout_timer()
3233 		sdhci_err_stats_inc(host, REQ_TIMEOUT);  in sdhci_timeout_timer()
3234 		sdhci_dumpregs(host);  in sdhci_timeout_timer()
3236 		host->cmd->error = -ETIMEDOUT;  in sdhci_timeout_timer()
3237 		sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_timeout_timer()
3240 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_timeout_timer()
3245 	struct sdhci_host *host;  in sdhci_timeout_data_timer()  local
3248 	host = from_timer(host, t, data_timer);  in sdhci_timeout_data_timer()
3250 	spin_lock_irqsave(&host->lock, flags);  in sdhci_timeout_data_timer()
3252 	if (host->data || host->data_cmd ||  in sdhci_timeout_data_timer()
3253 	    (host->cmd && sdhci_data_line_cmd(host->cmd))) {  in sdhci_timeout_data_timer()
3255 		       mmc_hostname(host->mmc));  in sdhci_timeout_data_timer()
3256 		sdhci_err_stats_inc(host, REQ_TIMEOUT);  in sdhci_timeout_data_timer()
3257 		sdhci_dumpregs(host);  in sdhci_timeout_data_timer()
3259 		if (host->data) {  in sdhci_timeout_data_timer()
3260 			host->data->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3261 			__sdhci_finish_data(host, true);  in sdhci_timeout_data_timer()
3262 			queue_work(host->complete_wq, &host->complete_work);  in sdhci_timeout_data_timer()
3263 		} else if (host->data_cmd) {  in sdhci_timeout_data_timer()
3264 			host->data_cmd->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3265 			sdhci_finish_mrq(host, host->data_cmd->mrq);  in sdhci_timeout_data_timer()
3267 			host->cmd->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3268 			sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_timeout_data_timer()
3272 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_timeout_data_timer()
3281 static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)  in sdhci_cmd_irq()  argument
3284 	if (intmask & SDHCI_INT_AUTO_CMD_ERR && host->data_cmd) {  in sdhci_cmd_irq()
3285 		struct mmc_request *mrq = host->data_cmd->mrq;  in sdhci_cmd_irq()
3286 		u16 auto_cmd_status = sdhci_readw(host, SDHCI_AUTO_CMD_STATUS);  in sdhci_cmd_irq()
3292 		if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) {  in sdhci_cmd_irq()
3298 	if (!host->cmd) {  in sdhci_cmd_irq()
3304 		if (host->pending_reset)  in sdhci_cmd_irq()
3307 		       mmc_hostname(host->mmc), (unsigned)intmask);  in sdhci_cmd_irq()
3308 		sdhci_err_stats_inc(host, UNEXPECTED_IRQ);  in sdhci_cmd_irq()
3309 		sdhci_dumpregs(host);  in sdhci_cmd_irq()
3316 			host->cmd->error = -ETIMEDOUT;  in sdhci_cmd_irq()
3317 			sdhci_err_stats_inc(host, CMD_TIMEOUT);  in sdhci_cmd_irq()
3319 			host->cmd->error = -EILSEQ;  in sdhci_cmd_irq()
3320 			if (!mmc_op_tuning(host->cmd->opcode))  in sdhci_cmd_irq()
3321 				sdhci_err_stats_inc(host, CMD_CRC);  in sdhci_cmd_irq()
3324 		if (host->cmd->data &&  in sdhci_cmd_irq()
3327 			host->cmd = NULL;  in sdhci_cmd_irq()
3332 		__sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_cmd_irq()
3338 		struct mmc_request *mrq = host->cmd->mrq;  in sdhci_cmd_irq()
3339 		u16 auto_cmd_status = sdhci_readw(host, SDHCI_AUTO_CMD_STATUS);  in sdhci_cmd_irq()
3344 		sdhci_err_stats_inc(host, AUTO_CMD);  in sdhci_cmd_irq()
3346 		if (sdhci_auto_cmd23(host, mrq)) {  in sdhci_cmd_irq()
3348 			__sdhci_finish_mrq(host, mrq);  in sdhci_cmd_irq()
3354 		sdhci_finish_command(host);  in sdhci_cmd_irq()
3357 static void sdhci_adma_show_error(struct sdhci_host *host)  in sdhci_adma_show_error()  argument
3359 	void *desc = host->adma_table;  in sdhci_adma_show_error()
3360 	dma_addr_t dma = host->adma_addr;  in sdhci_adma_show_error()
3362 	sdhci_dumpregs(host);  in sdhci_adma_show_error()
3367 		if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_adma_show_error()
3381 		desc += host->desc_sz;  in sdhci_adma_show_error()
3382 		dma += host->desc_sz;  in sdhci_adma_show_error()
3389 static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)  in sdhci_data_irq()  argument
3400 	if (intmask & SDHCI_INT_DATA_AVAIL && !host->data) {  in sdhci_data_irq()
3401 		command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND));  in sdhci_data_irq()
3404 			host->tuning_done = 1;  in sdhci_data_irq()
3405 			wake_up(&host->buf_ready_int);  in sdhci_data_irq()
3410 	if (!host->data) {  in sdhci_data_irq()
3411 		struct mmc_command *data_cmd = host->data_cmd;  in sdhci_data_irq()
3420 				host->data_cmd = NULL;  in sdhci_data_irq()
3422 				sdhci_err_stats_inc(host, CMD_TIMEOUT);  in sdhci_data_irq()
3423 				__sdhci_finish_mrq(host, data_cmd->mrq);  in sdhci_data_irq()
3427 				host->data_cmd = NULL;  in sdhci_data_irq()
3433 				if (host->cmd == data_cmd)  in sdhci_data_irq()
3436 				__sdhci_finish_mrq(host, data_cmd->mrq);  in sdhci_data_irq()
3446 		if (host->pending_reset)  in sdhci_data_irq()
3450 		       mmc_hostname(host->mmc), (unsigned)intmask);  in sdhci_data_irq()
3451 		sdhci_err_stats_inc(host, UNEXPECTED_IRQ);  in sdhci_data_irq()
3452 		sdhci_dumpregs(host);  in sdhci_data_irq()
3458 		host->data->error = -ETIMEDOUT;  in sdhci_data_irq()
3459 		sdhci_err_stats_inc(host, DAT_TIMEOUT);  in sdhci_data_irq()
3461 		host->data->error = -EILSEQ;  in sdhci_data_irq()
3462 		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))  in sdhci_data_irq()
3463 			sdhci_err_stats_inc(host, DAT_CRC);  in sdhci_data_irq()
3465 		SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))  in sdhci_data_irq()
3467 		host->data->error = -EILSEQ;  in sdhci_data_irq()
3468 		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))  in sdhci_data_irq()
3469 			sdhci_err_stats_inc(host, DAT_CRC);  in sdhci_data_irq()
3471 		pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc),  in sdhci_data_irq()
3473 		sdhci_adma_show_error(host);  in sdhci_data_irq()
3474 		sdhci_err_stats_inc(host, ADMA);  in sdhci_data_irq()
3475 		host->data->error = -EIO;  in sdhci_data_irq()
3476 		if (host->ops->adma_workaround)  in sdhci_data_irq()
3477 			host->ops->adma_workaround(host, intmask);  in sdhci_data_irq()
3480 	if (host->data->error)  in sdhci_data_irq()
3481 		sdhci_finish_data(host);  in sdhci_data_irq()
3484 			sdhci_transfer_pio(host);  in sdhci_data_irq()
3491 		 * According to the spec sdhci_readl(host, SDHCI_DMA_ADDRESS)  in sdhci_data_irq()
3498 			dmastart = sdhci_sdma_address(host);  in sdhci_data_irq()
3499 			dmanow = dmastart + host->data->bytes_xfered;  in sdhci_data_irq()
3506 			host->data->bytes_xfered = dmanow - dmastart;  in sdhci_data_irq()
3508 			    &dmastart, host->data->bytes_xfered, &dmanow);  in sdhci_data_irq()
3509 			sdhci_set_sdma_addr(host, dmanow);  in sdhci_data_irq()
3513 			if (host->cmd == host->data_cmd) {  in sdhci_data_irq()
3519 				host->data_early = 1;  in sdhci_data_irq()
3521 				sdhci_finish_data(host);  in sdhci_data_irq()
3527 static inline bool sdhci_defer_done(struct sdhci_host *host,  in sdhci_defer_done()  argument
3532 	return host->pending_reset || host->always_defer_done ||  in sdhci_defer_done()
3533 	       ((host->flags & SDHCI_REQ_USE_DMA) && data &&  in sdhci_defer_done()
3541 	struct sdhci_host *host = dev_id;  in sdhci_irq()  local
3546 	spin_lock(&host->lock);  in sdhci_irq()
3548 	if (host->runtime_suspended) {  in sdhci_irq()
3549 		spin_unlock(&host->lock);  in sdhci_irq()
3553 	intmask = sdhci_readl(host, SDHCI_INT_STATUS);  in sdhci_irq()
3562 		if (host->ops->irq) {  in sdhci_irq()
3563 			intmask = host->ops->irq(host, intmask);  in sdhci_irq()
3571 		sdhci_writel(host, mask, SDHCI_INT_STATUS);  in sdhci_irq()
3574 			u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) &  in sdhci_irq()
3588 			host->ier &= ~(SDHCI_INT_CARD_INSERT |  in sdhci_irq()
3590 			host->ier |= present ? SDHCI_INT_CARD_REMOVE :  in sdhci_irq()
3592 			sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_irq()
3593 			sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_irq()
3595 			sdhci_writel(host, intmask & (SDHCI_INT_CARD_INSERT |  in sdhci_irq()
3598 			host->thread_isr |= intmask & (SDHCI_INT_CARD_INSERT |  in sdhci_irq()
3604 			sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK, &intmask);  in sdhci_irq()
3607 			sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);  in sdhci_irq()
3611 				mmc_hostname(host->mmc));  in sdhci_irq()
3614 			mmc_retune_needed(host->mmc);  in sdhci_irq()
3617 		    (host->ier & SDHCI_INT_CARD_INT)) {  in sdhci_irq()
3618 			sdhci_enable_sdio_irq_nolock(host, false);  in sdhci_irq()
3619 			sdio_signal_irq(host->mmc);  in sdhci_irq()
3629 			sdhci_writel(host, intmask, SDHCI_INT_STATUS);  in sdhci_irq()
3635 		intmask = sdhci_readl(host, SDHCI_INT_STATUS);  in sdhci_irq()
3640 		struct mmc_request *mrq = host->mrqs_done[i];  in sdhci_irq()
3645 		if (sdhci_defer_done(host, mrq)) {  in sdhci_irq()
3649 			host->mrqs_done[i] = NULL;  in sdhci_irq()
3653 	if (host->deferred_cmd)  in sdhci_irq()
3656 	spin_unlock(&host->lock);  in sdhci_irq()
3663 		if (host->ops->request_done)  in sdhci_irq()
3664 			host->ops->request_done(host, mrqs_done[i]);  in sdhci_irq()
3666 			mmc_request_done(host->mmc, mrqs_done[i]);  in sdhci_irq()
3671 			   mmc_hostname(host->mmc), unexpected);  in sdhci_irq()
3672 		sdhci_err_stats_inc(host, UNEXPECTED_IRQ);  in sdhci_irq()
3673 		sdhci_dumpregs(host);  in sdhci_irq()
3681 	struct sdhci_host *host = dev_id;  in sdhci_thread_irq()  local
3686 	while (!sdhci_request_done(host))  in sdhci_thread_irq()
3689 	spin_lock_irqsave(&host->lock, flags);  in sdhci_thread_irq()
3691 	isr = host->thread_isr;  in sdhci_thread_irq()
3692 	host->thread_isr = 0;  in sdhci_thread_irq()
3694 	cmd = host->deferred_cmd;  in sdhci_thread_irq()
3695 	if (cmd && !sdhci_send_command_retry(host, cmd, flags))  in sdhci_thread_irq()
3696 		sdhci_finish_mrq(host, cmd->mrq);  in sdhci_thread_irq()
3698 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_thread_irq()
3701 		struct mmc_host *mmc = host->mmc;  in sdhci_thread_irq()
3718 static bool sdhci_cd_irq_can_wakeup(struct sdhci_host *host)  in sdhci_cd_irq_can_wakeup()  argument
3720 	return mmc_card_is_removable(host->mmc) &&  in sdhci_cd_irq_can_wakeup()
3721 	       !(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&  in sdhci_cd_irq_can_wakeup()
3722 	       !mmc_can_gpio_cd(host->mmc);  in sdhci_cd_irq_can_wakeup()
3728  * Table' in the SD Host Controller Standard Specification.
3733 static bool sdhci_enable_irq_wakeups(struct sdhci_host *host)  in sdhci_enable_irq_wakeups()  argument
3741 	if (sdhci_cd_irq_can_wakeup(host)) {  in sdhci_enable_irq_wakeups()
3746 	if (mmc_card_wake_sdio_irq(host->mmc)) {  in sdhci_enable_irq_wakeups()
3754 	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);  in sdhci_enable_irq_wakeups()
3757 	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);  in sdhci_enable_irq_wakeups()
3759 	sdhci_writel(host, irq_val, SDHCI_INT_ENABLE);  in sdhci_enable_irq_wakeups()
3761 	host->irq_wake_enabled = !enable_irq_wake(host->irq);  in sdhci_enable_irq_wakeups()
3763 	return host->irq_wake_enabled;  in sdhci_enable_irq_wakeups()
3766 static void sdhci_disable_irq_wakeups(struct sdhci_host *host)  in sdhci_disable_irq_wakeups()  argument
3772 	val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);  in sdhci_disable_irq_wakeups()
3774 	sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);  in sdhci_disable_irq_wakeups()
3776 	disable_irq_wake(host->irq);  in sdhci_disable_irq_wakeups()
3778 	host->irq_wake_enabled = false;  in sdhci_disable_irq_wakeups()
3781 int sdhci_suspend_host(struct sdhci_host *host)  in sdhci_suspend_host()  argument
3783 	sdhci_disable_card_detection(host);  in sdhci_suspend_host()
3785 	mmc_retune_timer_stop(host->mmc);  in sdhci_suspend_host()
3787 	if (!device_may_wakeup(mmc_dev(host->mmc)) ||  in sdhci_suspend_host()
3788 	    !sdhci_enable_irq_wakeups(host)) {  in sdhci_suspend_host()
3789 		host->ier = 0;  in sdhci_suspend_host()
3790 		sdhci_writel(host, 0, SDHCI_INT_ENABLE);  in sdhci_suspend_host()
3791 		sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);  in sdhci_suspend_host()
3792 		free_irq(host->irq, host);  in sdhci_suspend_host()
3800 int sdhci_resume_host(struct sdhci_host *host)  in sdhci_resume_host()  argument
3802 	struct mmc_host *mmc = host->mmc;  in sdhci_resume_host()
3805 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_resume_host()
3806 		if (host->ops->enable_dma)  in sdhci_resume_host()
3807 			host->ops->enable_dma(host);  in sdhci_resume_host()
3811 	    (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) {  in sdhci_resume_host()
3812 		/* Card keeps power but host controller does not */  in sdhci_resume_host()
3813 		sdhci_init(host, 0);  in sdhci_resume_host()
3814 		host->pwr = 0;  in sdhci_resume_host()
3815 		host->clock = 0;  in sdhci_resume_host()
3816 		host->reinit_uhs = true;  in sdhci_resume_host()
3819 		sdhci_init(host, (mmc->pm_flags & MMC_PM_KEEP_POWER));  in sdhci_resume_host()
3822 	if (host->irq_wake_enabled) {  in sdhci_resume_host()
3823 		sdhci_disable_irq_wakeups(host);  in sdhci_resume_host()
3825 		ret = request_threaded_irq(host->irq, sdhci_irq,  in sdhci_resume_host()
3827 					   mmc_hostname(mmc), host);  in sdhci_resume_host()
3832 	sdhci_enable_card_detection(host);  in sdhci_resume_host()
3839 int sdhci_runtime_suspend_host(struct sdhci_host *host)  in sdhci_runtime_suspend_host()  argument
3843 	mmc_retune_timer_stop(host->mmc);  in sdhci_runtime_suspend_host()
3845 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_suspend_host()
3846 	host->ier &= SDHCI_INT_CARD_INT;  in sdhci_runtime_suspend_host()
3847 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_runtime_suspend_host()
3848 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_runtime_suspend_host()
3849 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_suspend_host()
3851 	synchronize_hardirq(host->irq);  in sdhci_runtime_suspend_host()
3853 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_suspend_host()
3854 	host->runtime_suspended = true;  in sdhci_runtime_suspend_host()
3855 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_suspend_host()
3861 int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset)  in sdhci_runtime_resume_host()  argument
3863 	struct mmc_host *mmc = host->mmc;  in sdhci_runtime_resume_host()
3865 	int host_flags = host->flags;  in sdhci_runtime_resume_host()
3868 		if (host->ops->enable_dma)  in sdhci_runtime_resume_host()
3869 			host->ops->enable_dma(host);  in sdhci_runtime_resume_host()
3872 	sdhci_init(host, soft_reset);  in sdhci_runtime_resume_host()
3877 		host->pwr = 0;  in sdhci_runtime_resume_host()
3878 		host->clock = 0;  in sdhci_runtime_resume_host()
3879 		host->reinit_uhs = true;  in sdhci_runtime_resume_host()
3884 		    !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {  in sdhci_runtime_resume_host()
3885 			spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_resume_host()
3886 			sdhci_enable_preset_value(host, true);  in sdhci_runtime_resume_host()
3887 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_resume_host()
3895 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_resume_host()
3897 	host->runtime_suspended = false;  in sdhci_runtime_resume_host()
3901 		sdhci_enable_sdio_irq_nolock(host, true);  in sdhci_runtime_resume_host()
3904 	sdhci_enable_card_detection(host);  in sdhci_runtime_resume_host()
3906 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_resume_host()
3922 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_cqe_enable()  local
3926 	spin_lock_irqsave(&host->lock, flags);  in sdhci_cqe_enable()
3928 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);  in sdhci_cqe_enable()
3931 	 * Host from V4.10 supports ADMA3 DMA type.  in sdhci_cqe_enable()
3935 	if (host->v4_mode && (host->caps1 & SDHCI_CAN_DO_ADMA3))  in sdhci_cqe_enable()
3937 	else if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_cqe_enable()
3941 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);  in sdhci_cqe_enable()
3943 	sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, 512),  in sdhci_cqe_enable()
3947 	sdhci_set_timeout(host, NULL);  in sdhci_cqe_enable()
3949 	host->ier = host->cqe_ier;  in sdhci_cqe_enable()
3951 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_cqe_enable()
3952 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_cqe_enable()
3954 	host->cqe_on = true;  in sdhci_cqe_enable()
3957 		 mmc_hostname(mmc), host->ier,  in sdhci_cqe_enable()
3958 		 sdhci_readl(host, SDHCI_INT_STATUS));  in sdhci_cqe_enable()
3960 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_cqe_enable()
3966 	struct sdhci_host *host = mmc_priv(mmc);  in sdhci_cqe_disable()  local
3969 	spin_lock_irqsave(&host->lock, flags);  in sdhci_cqe_disable()
3971 	sdhci_set_default_irqs(host);  in sdhci_cqe_disable()
3973 	host->cqe_on = false;  in sdhci_cqe_disable()
3976 		sdhci_reset_for(host, CQE_RECOVERY);  in sdhci_cqe_disable()
3979 		 mmc_hostname(mmc), host->ier,  in sdhci_cqe_disable()
3980 		 sdhci_readl(host, SDHCI_INT_STATUS));  in sdhci_cqe_disable()
3982 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_cqe_disable()
3986 bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,  in sdhci_cqe_irq()  argument
3991 	if (!host->cqe_on)  in sdhci_cqe_irq()
3996 		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))  in sdhci_cqe_irq()
3997 			sdhci_err_stats_inc(host, CMD_CRC);  in sdhci_cqe_irq()
4000 		sdhci_err_stats_inc(host, CMD_TIMEOUT);  in sdhci_cqe_irq()
4006 		if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND))))  in sdhci_cqe_irq()
4007 			sdhci_err_stats_inc(host, DAT_CRC);  in sdhci_cqe_irq()
4010 		sdhci_err_stats_inc(host, DAT_TIMEOUT);  in sdhci_cqe_irq()
4013 		sdhci_err_stats_inc(host, ADMA);  in sdhci_cqe_irq()
4018 	mask = intmask & host->cqe_ier;  in sdhci_cqe_irq()
4019 	sdhci_writel(host, mask, SDHCI_INT_STATUS);  in sdhci_cqe_irq()
4023 		       mmc_hostname(host->mmc));  in sdhci_cqe_irq()
4025 	intmask &= ~(host->cqe_ier | SDHCI_INT_ERROR);  in sdhci_cqe_irq()
4027 		sdhci_writel(host, intmask, SDHCI_INT_STATUS);  in sdhci_cqe_irq()
4029 		       mmc_hostname(host->mmc), intmask);  in sdhci_cqe_irq()
4030 		sdhci_err_stats_inc(host, UNEXPECTED_IRQ);  in sdhci_cqe_irq()
4031 		sdhci_dumpregs(host);  in sdhci_cqe_irq()
4048 	struct sdhci_host *host;  in sdhci_alloc_host()  local
4056 	host = mmc_priv(mmc);  in sdhci_alloc_host()
4057 	host->mmc = mmc;  in sdhci_alloc_host()
4058 	host->mmc_host_ops = sdhci_ops;  in sdhci_alloc_host()
4059 	mmc->ops = &host->mmc_host_ops;  in sdhci_alloc_host()
4061 	host->flags = SDHCI_SIGNALING_330;  in sdhci_alloc_host()
4063 	host->cqe_ier     = SDHCI_CQE_INT_MASK;  in sdhci_alloc_host()
4064 	host->cqe_err_ier = SDHCI_CQE_INT_ERR_MASK;  in sdhci_alloc_host()
4066 	host->tuning_delay = -1;  in sdhci_alloc_host()
4067 	host->tuning_loop_count = MAX_TUNING_LOOP;  in sdhci_alloc_host()
4069 	host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG;  in sdhci_alloc_host()
4076 	host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1;  in sdhci_alloc_host()
4077 	host->max_adma = 65536;  in sdhci_alloc_host()
4079 	host->max_timeout_count = 0xE;  in sdhci_alloc_host()
4081 	return host;  in sdhci_alloc_host()
4086 static int sdhci_set_dma_mask(struct sdhci_host *host)  in sdhci_set_dma_mask()  argument
4088 	struct mmc_host *mmc = host->mmc;  in sdhci_set_dma_mask()
4092 	if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA)  in sdhci_set_dma_mask()
4093 		host->flags &= ~SDHCI_USE_64_BIT_DMA;  in sdhci_set_dma_mask()
4096 	if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_set_dma_mask()
4101 			host->flags &= ~SDHCI_USE_64_BIT_DMA;  in sdhci_set_dma_mask()
4116 void __sdhci_read_caps(struct sdhci_host *host, const u16 *ver,  in __sdhci_read_caps()  argument
4123 	if (host->read_caps)  in __sdhci_read_caps()
4126 	host->read_caps = true;  in __sdhci_read_caps()
4129 		host->quirks = debug_quirks;  in __sdhci_read_caps()
4132 		host->quirks2 = debug_quirks2;  in __sdhci_read_caps()
4134 	sdhci_reset_for_all(host);  in __sdhci_read_caps()
4136 	if (host->v4_mode)  in __sdhci_read_caps()
4137 		sdhci_do_enable_v4_mode(host);  in __sdhci_read_caps()
4139 	device_property_read_u64(mmc_dev(host->mmc),  in __sdhci_read_caps()
4141 	device_property_read_u64(mmc_dev(host->mmc),  in __sdhci_read_caps()
4144 	v = ver ? *ver : sdhci_readw(host, SDHCI_HOST_VERSION);  in __sdhci_read_caps()
4145 	host->version = (v & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT;  in __sdhci_read_caps()
4147 	if (host->quirks & SDHCI_QUIRK_MISSING_CAPS)  in __sdhci_read_caps()
4151 		host->caps = *caps;  in __sdhci_read_caps()
4153 		host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);  in __sdhci_read_caps()
4154 		host->caps &= ~lower_32_bits(dt_caps_mask);  in __sdhci_read_caps()
4155 		host->caps |= lower_32_bits(dt_caps);  in __sdhci_read_caps()
4158 	if (host->version < SDHCI_SPEC_300)  in __sdhci_read_caps()
4162 		host->caps1 = *caps1;  in __sdhci_read_caps()
4164 		host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);  in __sdhci_read_caps()
4165 		host->caps1 &= ~upper_32_bits(dt_caps_mask);  in __sdhci_read_caps()
4166 		host->caps1 |= upper_32_bits(dt_caps);  in __sdhci_read_caps()
4171 static void sdhci_allocate_bounce_buffer(struct sdhci_host *host)  in sdhci_allocate_bounce_buffer()  argument
4173 	struct mmc_host *mmc = host->mmc;  in sdhci_allocate_bounce_buffer()
4198 	host->bounce_buffer = devm_kmalloc(mmc_dev(mmc),  in sdhci_allocate_bounce_buffer()
4201 	if (!host->bounce_buffer) {  in sdhci_allocate_bounce_buffer()
4212 	host->bounce_addr = dma_map_single(mmc_dev(mmc),  in sdhci_allocate_bounce_buffer()
4213 					   host->bounce_buffer,  in sdhci_allocate_bounce_buffer()
4216 	ret = dma_mapping_error(mmc_dev(mmc), host->bounce_addr);  in sdhci_allocate_bounce_buffer()
4218 		devm_kfree(mmc_dev(mmc), host->bounce_buffer);  in sdhci_allocate_bounce_buffer()
4219 		host->bounce_buffer = NULL;  in sdhci_allocate_bounce_buffer()
4224 	host->bounce_buffer_size = bounce_size;  in sdhci_allocate_bounce_buffer()
4235 static inline bool sdhci_can_64bit_dma(struct sdhci_host *host)  in sdhci_can_64bit_dma()  argument
4238 	 * According to SD Host Controller spec v4.10, bit[27] added from  in sdhci_can_64bit_dma()
4242 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode)  in sdhci_can_64bit_dma()
4243 		return host->caps & SDHCI_CAN_64BIT_V4;  in sdhci_can_64bit_dma()
4245 	return host->caps & SDHCI_CAN_64BIT;  in sdhci_can_64bit_dma()
4248 int sdhci_setup_host(struct sdhci_host *host)  in sdhci_setup_host()  argument
4258 	WARN_ON(host == NULL);  in sdhci_setup_host()
4259 	if (host == NULL)  in sdhci_setup_host()
4262 	mmc = host->mmc;  in sdhci_setup_host()
4266 	 * early before resetting the host and reading the capabilities so that  in sdhci_setup_host()
4267 	 * the host can take the appropriate action if regulators are not  in sdhci_setup_host()
4278 	    sdhci_readw(host, SDHCI_HOST_VERSION),  in sdhci_setup_host()
4279 	    sdhci_readl(host, SDHCI_PRESENT_STATE));  in sdhci_setup_host()
4281 	    sdhci_readl(host, SDHCI_CAPABILITIES),  in sdhci_setup_host()
4282 	    sdhci_readl(host, SDHCI_CAPABILITIES_1));  in sdhci_setup_host()
4284 	sdhci_read_caps(host);  in sdhci_setup_host()
4286 	override_timeout_clk = host->timeout_clk;  in sdhci_setup_host()
4288 	if (host->version > SDHCI_SPEC_420) {  in sdhci_setup_host()
4290 		       mmc_hostname(mmc), host->version);  in sdhci_setup_host()
4293 	if (host->quirks & SDHCI_QUIRK_FORCE_DMA)  in sdhci_setup_host()
4294 		host->flags |= SDHCI_USE_SDMA;  in sdhci_setup_host()
4295 	else if (!(host->caps & SDHCI_CAN_DO_SDMA))  in sdhci_setup_host()
4298 		host->flags |= SDHCI_USE_SDMA;  in sdhci_setup_host()
4300 	if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) &&  in sdhci_setup_host()
4301 		(host->flags & SDHCI_USE_SDMA)) {  in sdhci_setup_host()
4303 		host->flags &= ~SDHCI_USE_SDMA;  in sdhci_setup_host()
4306 	if ((host->version >= SDHCI_SPEC_200) &&  in sdhci_setup_host()
4307 		(host->caps & SDHCI_CAN_DO_ADMA2))  in sdhci_setup_host()
4308 		host->flags |= SDHCI_USE_ADMA;  in sdhci_setup_host()
4310 	if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) &&  in sdhci_setup_host()
4311 		(host->flags & SDHCI_USE_ADMA)) {  in sdhci_setup_host()
4313 		host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4316 	if (sdhci_can_64bit_dma(host))  in sdhci_setup_host()
4317 		host->flags |= SDHCI_USE_64_BIT_DMA;  in sdhci_setup_host()
4319 	if (host->use_external_dma) {  in sdhci_setup_host()
4320 		ret = sdhci_external_dma_init(host);  in sdhci_setup_host()
4328 			sdhci_switch_external_dma(host, false);  in sdhci_setup_host()
4331 			host->flags &= ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA);  in sdhci_setup_host()
4334 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_setup_host()
4335 		if (host->ops->set_dma_mask)  in sdhci_setup_host()
4336 			ret = host->ops->set_dma_mask(host);  in sdhci_setup_host()
4338 			ret = sdhci_set_dma_mask(host);  in sdhci_setup_host()
4340 		if (!ret && host->ops->enable_dma)  in sdhci_setup_host()
4341 			ret = host->ops->enable_dma(host);  in sdhci_setup_host()
4346 			host->flags &= ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA);  in sdhci_setup_host()
4353 	if ((host->flags & SDHCI_USE_64_BIT_DMA) && !host->v4_mode)  in sdhci_setup_host()
4354 		host->flags &= ~SDHCI_USE_SDMA;  in sdhci_setup_host()
4356 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4360 		if (!(host->flags & SDHCI_USE_64_BIT_DMA))  in sdhci_setup_host()
4361 			host->alloc_desc_sz = SDHCI_ADMA2_32_DESC_SZ;  in sdhci_setup_host()
4362 		else if (!host->alloc_desc_sz)  in sdhci_setup_host()
4363 			host->alloc_desc_sz = SDHCI_ADMA2_64_DESC_SZ(host);  in sdhci_setup_host()
4365 		host->desc_sz = host->alloc_desc_sz;  in sdhci_setup_host()
4366 		host->adma_table_sz = host->adma_table_cnt * host->desc_sz;  in sdhci_setup_host()
4368 		host->align_buffer_sz = SDHCI_MAX_SEGS * SDHCI_ADMA2_ALIGN;  in sdhci_setup_host()
4374 					 host->align_buffer_sz + host->adma_table_sz,  in sdhci_setup_host()
4379 			host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4380 		} else if ((dma + host->align_buffer_sz) &  in sdhci_setup_host()
4384 			host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4385 			dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_setup_host()
4386 					  host->adma_table_sz, buf, dma);  in sdhci_setup_host()
4388 			host->align_buffer = buf;  in sdhci_setup_host()
4389 			host->align_addr = dma;  in sdhci_setup_host()
4391 			host->adma_table = buf + host->align_buffer_sz;  in sdhci_setup_host()
4392 			host->adma_addr = dma + host->align_buffer_sz;  in sdhci_setup_host()
4401 	if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) {  in sdhci_setup_host()
4402 		host->dma_mask = DMA_BIT_MASK(64);  in sdhci_setup_host()
4403 		mmc_dev(mmc)->dma_mask = &host->dma_mask;  in sdhci_setup_host()
4406 	if (host->version >= SDHCI_SPEC_300)  in sdhci_setup_host()
4407 		host->max_clk = FIELD_GET(SDHCI_CLOCK_V3_BASE_MASK, host->caps);  in sdhci_setup_host()
4409 		host->max_clk = FIELD_GET(SDHCI_CLOCK_BASE_MASK, host->caps);  in sdhci_setup_host()
4411 	host->max_clk *= 1000000;  in sdhci_setup_host()
4412 	if (host->max_clk == 0 || host->quirks &  in sdhci_setup_host()
4414 		if (!host->ops->get_max_clock) {  in sdhci_setup_host()
4420 		host->max_clk = host->ops->get_max_clock(host);  in sdhci_setup_host()
4424 	 * In case of Host Controller v3.00, find out whether clock  in sdhci_setup_host()
4427 	host->clk_mul = FIELD_GET(SDHCI_CLOCK_MUL_MASK, host->caps1);  in sdhci_setup_host()
4435 	if (host->clk_mul)  in sdhci_setup_host()
4436 		host->clk_mul += 1;  in sdhci_setup_host()
4439 	 * Set host parameters.  in sdhci_setup_host()
4441 	max_clk = host->max_clk;  in sdhci_setup_host()
4443 	if (host->ops->get_min_clock)  in sdhci_setup_host()
4444 		mmc->f_min = host->ops->get_min_clock(host);  in sdhci_setup_host()
4445 	else if (host->version >= SDHCI_SPEC_300) {  in sdhci_setup_host()
4446 		if (host->clk_mul)  in sdhci_setup_host()
4447 			max_clk = host->max_clk * host->clk_mul;  in sdhci_setup_host()
4452 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;  in sdhci_setup_host()
4454 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;  in sdhci_setup_host()
4459 	if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {  in sdhci_setup_host()
4460 		host->timeout_clk = FIELD_GET(SDHCI_TIMEOUT_CLK_MASK, host->caps);  in sdhci_setup_host()
4462 		if (host->caps & SDHCI_TIMEOUT_CLK_UNIT)  in sdhci_setup_host()
4463 			host->timeout_clk *= 1000;  in sdhci_setup_host()
4465 		if (host->timeout_clk == 0) {  in sdhci_setup_host()
4466 			if (!host->ops->get_timeout_clock) {  in sdhci_setup_host()
4473 			host->timeout_clk =  in sdhci_setup_host()
4474 				DIV_ROUND_UP(host->ops->get_timeout_clock(host),  in sdhci_setup_host()
4479 			host->timeout_clk = override_timeout_clk;  in sdhci_setup_host()
4481 		mmc->max_busy_timeout = host->ops->get_max_timeout_count ?  in sdhci_setup_host()
4482 			host->ops->get_max_timeout_count(host) : 1 << 27;  in sdhci_setup_host()
4483 		mmc->max_busy_timeout /= host->timeout_clk;  in sdhci_setup_host()
4486 	if (host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT &&  in sdhci_setup_host()
4487 	    !host->ops->get_max_timeout_count)  in sdhci_setup_host()
4493 	if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)  in sdhci_setup_host()
4494 		host->flags |= SDHCI_AUTO_CMD12;  in sdhci_setup_host()
4500 	if ((host->version >= SDHCI_SPEC_300) &&  in sdhci_setup_host()
4501 	    ((host->flags & SDHCI_USE_ADMA) ||  in sdhci_setup_host()
4502 	     !(host->flags & SDHCI_USE_SDMA) || host->v4_mode) &&  in sdhci_setup_host()
4503 	     !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) {  in sdhci_setup_host()
4504 		host->flags |= SDHCI_AUTO_CMD23;  in sdhci_setup_host()
4517 	if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))  in sdhci_setup_host()
4520 	if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23)  in sdhci_setup_host()
4523 	if (host->caps & SDHCI_CAN_DO_HISPD)  in sdhci_setup_host()
4526 	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&  in sdhci_setup_host()
4534 			host->sdhci_core_to_disable_vqmmc = !ret;  in sdhci_setup_host()
4540 			host->caps1 &= ~(SDHCI_SUPPORT_SDR104 |  in sdhci_setup_host()
4547 			host->flags &= ~SDHCI_SIGNALING_330;  in sdhci_setup_host()
4557 	if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) {  in sdhci_setup_host()
4558 		host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |  in sdhci_setup_host()
4573 	if (host->caps1 & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |  in sdhci_setup_host()
4578 	if (host->caps1 & SDHCI_SUPPORT_SDR104) {  in sdhci_setup_host()
4583 		if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200))  in sdhci_setup_host()
4585 	} else if (host->caps1 & SDHCI_SUPPORT_SDR50) {  in sdhci_setup_host()
4589 	if (host->quirks2 & SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 &&  in sdhci_setup_host()
4590 	    (host->caps1 & SDHCI_SUPPORT_HS400))  in sdhci_setup_host()
4599 	if ((host->caps1 & SDHCI_SUPPORT_DDR50) &&  in sdhci_setup_host()
4600 	    !(host->quirks2 & SDHCI_QUIRK2_BROKEN_DDR50))  in sdhci_setup_host()
4603 	/* Does the host need tuning for SDR50? */  in sdhci_setup_host()
4604 	if (host->caps1 & SDHCI_USE_SDR50_TUNING)  in sdhci_setup_host()
4605 		host->flags |= SDHCI_SDR50_NEEDS_TUNING;  in sdhci_setup_host()
4607 	/* Driver Type(s) (A, C, D) supported by the host */  in sdhci_setup_host()
4608 	if (host->caps1 & SDHCI_DRIVER_TYPE_A)  in sdhci_setup_host()
4610 	if (host->caps1 & SDHCI_DRIVER_TYPE_C)  in sdhci_setup_host()
4612 	if (host->caps1 & SDHCI_DRIVER_TYPE_D)  in sdhci_setup_host()
4616 	host->tuning_count = FIELD_GET(SDHCI_RETUNING_TIMER_COUNT_MASK,  in sdhci_setup_host()
4617 				       host->caps1);  in sdhci_setup_host()
4623 	if (host->tuning_count)  in sdhci_setup_host()
4624 		host->tuning_count = 1 << (host->tuning_count - 1);  in sdhci_setup_host()
4626 	/* Re-tuning mode supported by the Host Controller */  in sdhci_setup_host()
4627 	host->tuning_mode = FIELD_GET(SDHCI_RETUNING_MODE_MASK, host->caps1);  in sdhci_setup_host()
4632 	 * According to SD Host Controller spec v3.00, if the Host System  in sdhci_setup_host()
4633 	 * can afford more than 150mA, Host Driver should set XPC to 1. Also  in sdhci_setup_host()
4638 	max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);  in sdhci_setup_host()
4655 	if (host->caps & SDHCI_CAN_VDD_330) {  in sdhci_setup_host()
4662 	if (host->caps & SDHCI_CAN_VDD_300) {  in sdhci_setup_host()
4669 	if (host->caps & SDHCI_CAN_VDD_180) {  in sdhci_setup_host()
4677 	/* If OCR set by host, use it instead. */  in sdhci_setup_host()
4678 	if (host->ocr_mask)  in sdhci_setup_host()
4679 		ocr_avail = host->ocr_mask;  in sdhci_setup_host()
4687 	if (host->ocr_avail_sdio)  in sdhci_setup_host()
4688 		mmc->ocr_avail_sdio &= host->ocr_avail_sdio;  in sdhci_setup_host()
4690 	if (host->ocr_avail_sd)  in sdhci_setup_host()
4691 		mmc->ocr_avail_sd &= host->ocr_avail_sd;  in sdhci_setup_host()
4695 	if (host->ocr_avail_mmc)  in sdhci_setup_host()
4696 		mmc->ocr_avail_mmc &= host->ocr_avail_mmc;  in sdhci_setup_host()
4709 		host->flags |= SDHCI_SIGNALING_180;  in sdhci_setup_host()
4712 		host->flags |= SDHCI_SIGNALING_120;  in sdhci_setup_host()
4714 	spin_lock_init(&host->lock);  in sdhci_setup_host()
4727 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4729 	} else if (host->flags & SDHCI_USE_SDMA) {  in sdhci_setup_host()
4742 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4743 		if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) {  in sdhci_setup_host()
4744 			host->max_adma = 65532; /* 32-bit alignment */  in sdhci_setup_host()
4757 	if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) {  in sdhci_setup_host()
4760 		mmc->max_blk_size = (host->caps & SDHCI_MAX_BLOCK_MASK) >>  in sdhci_setup_host()
4774 	mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;  in sdhci_setup_host()
4778 		sdhci_allocate_bounce_buffer(host);  in sdhci_setup_host()
4783 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_setup_host()
4786 	if (host->align_buffer)  in sdhci_setup_host()
4787 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_setup_host()
4788 				  host->adma_table_sz, host->align_buffer,  in sdhci_setup_host()
4789 				  host->align_addr);  in sdhci_setup_host()
4790 	host->adma_table = NULL;  in sdhci_setup_host()
4791 	host->align_buffer = NULL;  in sdhci_setup_host()
4797 void sdhci_cleanup_host(struct sdhci_host *host)  in sdhci_cleanup_host()  argument
4799 	struct mmc_host *mmc = host->mmc;  in sdhci_cleanup_host()
4801 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_cleanup_host()
4804 	if (host->align_buffer)  in sdhci_cleanup_host()
4805 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_cleanup_host()
4806 				  host->adma_table_sz, host->align_buffer,  in sdhci_cleanup_host()
4807 				  host->align_addr);  in sdhci_cleanup_host()
4809 	if (host->use_external_dma)  in sdhci_cleanup_host()
4810 		sdhci_external_dma_release(host);  in sdhci_cleanup_host()
4812 	host->adma_table = NULL;  in sdhci_cleanup_host()
4813 	host->align_buffer = NULL;  in sdhci_cleanup_host()
4817 int __sdhci_add_host(struct sdhci_host *host)  in __sdhci_add_host()  argument
4820 	struct mmc_host *mmc = host->mmc;  in __sdhci_add_host()
4824 	    (host->quirks & SDHCI_QUIRK_BROKEN_CQE)) {  in __sdhci_add_host()
4829 	host->complete_wq = alloc_workqueue("sdhci", flags, 0);  in __sdhci_add_host()
4830 	if (!host->complete_wq)  in __sdhci_add_host()
4833 	INIT_WORK(&host->complete_work, sdhci_complete_work);  in __sdhci_add_host()
4835 	timer_setup(&host->timer, sdhci_timeout_timer, 0);  in __sdhci_add_host()
4836 	timer_setup(&host->data_timer, sdhci_timeout_data_timer, 0);  in __sdhci_add_host()
4838 	init_waitqueue_head(&host->buf_ready_int);  in __sdhci_add_host()
4840 	sdhci_init(host, 0);  in __sdhci_add_host()
4842 	ret = request_threaded_irq(host->irq, sdhci_irq, sdhci_thread_irq,  in __sdhci_add_host()
4843 				   IRQF_SHARED,	mmc_hostname(mmc), host);  in __sdhci_add_host()
4846 		       mmc_hostname(mmc), host->irq, ret);  in __sdhci_add_host()
4850 	ret = sdhci_led_register(host);  in __sdhci_add_host()
4862 		mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)),  in __sdhci_add_host()
4863 		host->use_external_dma ? "External DMA" :  in __sdhci_add_host()
4864 		(host->flags & SDHCI_USE_ADMA) ?  in __sdhci_add_host()
4865 		(host->flags & SDHCI_USE_64_BIT_DMA) ? "ADMA 64-bit" : "ADMA" :  in __sdhci_add_host()
4866 		(host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO");  in __sdhci_add_host()
4868 	sdhci_enable_card_detection(host);  in __sdhci_add_host()
4873 	sdhci_led_unregister(host);  in __sdhci_add_host()
4875 	sdhci_reset_for_all(host);  in __sdhci_add_host()
4876 	sdhci_writel(host, 0, SDHCI_INT_ENABLE);  in __sdhci_add_host()
4877 	sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);  in __sdhci_add_host()
4878 	free_irq(host->irq, host);  in __sdhci_add_host()
4880 	destroy_workqueue(host->complete_wq);  in __sdhci_add_host()
4886 int sdhci_add_host(struct sdhci_host *host)  in sdhci_add_host()  argument
4890 	ret = sdhci_setup_host(host);  in sdhci_add_host()
4894 	ret = __sdhci_add_host(host);  in sdhci_add_host()
4901 	sdhci_cleanup_host(host);  in sdhci_add_host()
4907 void sdhci_remove_host(struct sdhci_host *host, int dead)  in sdhci_remove_host()  argument
4909 	struct mmc_host *mmc = host->mmc;  in sdhci_remove_host()
4913 		spin_lock_irqsave(&host->lock, flags);  in sdhci_remove_host()
4915 		host->flags |= SDHCI_DEVICE_DEAD;  in sdhci_remove_host()
4917 		if (sdhci_has_requests(host)) {  in sdhci_remove_host()
4920 			sdhci_error_out_mrqs(host, -ENOMEDIUM);  in sdhci_remove_host()
4923 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_remove_host()
4926 	sdhci_disable_card_detection(host);  in sdhci_remove_host()
4930 	sdhci_led_unregister(host);  in sdhci_remove_host()
4933 		sdhci_reset_for_all(host);  in sdhci_remove_host()
4935 	sdhci_writel(host, 0, SDHCI_INT_ENABLE);  in sdhci_remove_host()
4936 	sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);  in sdhci_remove_host()
4937 	free_irq(host->irq, host);  in sdhci_remove_host()
4939 	del_timer_sync(&host->timer);  in sdhci_remove_host()
4940 	del_timer_sync(&host->data_timer);  in sdhci_remove_host()
4942 	destroy_workqueue(host->complete_wq);  in sdhci_remove_host()
4944 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_remove_host()
4947 	if (host->align_buffer)  in sdhci_remove_host()
4948 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_remove_host()
4949 				  host->adma_table_sz, host->align_buffer,  in sdhci_remove_host()
4950 				  host->align_addr);  in sdhci_remove_host()
4952 	if (host->use_external_dma)  in sdhci_remove_host()
4953 		sdhci_external_dma_release(host);  in sdhci_remove_host()
4955 	host->adma_table = NULL;  in sdhci_remove_host()
4956 	host->align_buffer = NULL;  in sdhci_remove_host()
4961 void sdhci_free_host(struct sdhci_host *host)  in sdhci_free_host()  argument
4963 	mmc_free_host(host->mmc);  in sdhci_free_host()
4977 		": Secure Digital Host Controller Interface driver\n");  in sdhci_drv_init()
4994 MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver");