1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver
5  *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
9  *     - JMicron (hardware and technical support)
13 #include <linux/delay.h>
19 #include <linux/dma-mapping.h>
33 #include <linux/mmc/slot-gpio.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)
47 static unsigned int debug_quirks = 0;
48 static unsigned int debug_quirks2;
50 static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);
71 	SDHCI_DUMP("Wake-up:   0x%08x | Clock:    0x%08x\n",  in sdhci_dumpregs()
74 	SDHCI_DUMP("Timeout:   0x%08x | Int stat: 0x%08x\n",  in sdhci_dumpregs()
77 	SDHCI_DUMP("Int enab:  0x%08x | Sig enab: 0x%08x\n",  in sdhci_dumpregs()
80 	SDHCI_DUMP("ACmd stat: 0x%08x | Slot int: 0x%08x\n",  in sdhci_dumpregs()
86 	SDHCI_DUMP("Cmd:       0x%08x | Max curr: 0x%08x\n",  in sdhci_dumpregs()
98 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_dumpregs()
99 		if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_dumpregs()
111 	if (host->ops->dump_uhs2_regs)  in sdhci_dumpregs()
112 		host->ops->dump_uhs2_regs(host);  in sdhci_dumpregs()
114 	if (host->ops->dump_vendor_regs)  in sdhci_dumpregs()
115 		host->ops->dump_vendor_regs(host);  in sdhci_dumpregs()
145 	host->v4_mode = true;  in sdhci_enable_v4_mode()
150 bool sdhci_data_line_cmd(struct mmc_command *cmd)  in sdhci_data_line_cmd()  argument
152 	return cmd->data || cmd->flags & MMC_RSP_BUSY;  in sdhci_data_line_cmd()
160 	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) ||  in sdhci_set_card_detection()
161 	    !mmc_card_is_removable(host->mmc) || mmc_can_gpio_cd(host->mmc))  in sdhci_set_card_detection()
168 		host->ier |= present ? SDHCI_INT_CARD_REMOVE :  in sdhci_set_card_detection()
171 		host->ier &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);  in sdhci_set_card_detection()
174 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_card_detection()
175 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_card_detection()
190 	if (host->bus_on)  in sdhci_runtime_pm_bus_on()
192 	host->bus_on = true;  in sdhci_runtime_pm_bus_on()
193 	pm_runtime_get_noresume(mmc_dev(host->mmc));  in sdhci_runtime_pm_bus_on()
198 	if (!host->bus_on)  in sdhci_runtime_pm_bus_off()
200 	host->bus_on = false;  in sdhci_runtime_pm_bus_off()
201 	pm_runtime_put_noidle(mmc_dev(host->mmc));  in sdhci_runtime_pm_bus_off()
211 		host->clock = 0;  in sdhci_reset()
212 		/* Reset-all turns off SD Bus Power */  in sdhci_reset()
213 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_reset()
228 				mmc_hostname(host->mmc), (int)mask);  in sdhci_reset()
240 	if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {  in sdhci_do_reset()
241 		struct mmc_host *mmc = host->mmc;  in sdhci_do_reset()
243 		if (!mmc->ops->get_cd(mmc))  in sdhci_do_reset()
247 	host->ops->reset(host, mask);  in sdhci_do_reset()
256 		if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_reset_for_all()
257 			if (host->ops->enable_dma)  in sdhci_reset_for_all()
258 				host->ops->enable_dma(host);  in sdhci_reset_for_all()
261 		host->preset_enabled = false;  in sdhci_reset_for_all()
276 	if (host->quirks2 & SDHCI_QUIRK2_ISSUE_CMD_DAT_RESET_TOGETHER) {  in sdhci_reset_for_reason()
302 	host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |  in sdhci_set_default_irqs()
308 	if (host->tuning_mode == SDHCI_TUNING_MODE_2 ||  in sdhci_set_default_irqs()
309 	    host->tuning_mode == SDHCI_TUNING_MODE_3)  in sdhci_set_default_irqs()
310 		host->ier |= SDHCI_INT_RETUNE;  in sdhci_set_default_irqs()
312 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_default_irqs()
313 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_default_irqs()
321 	if (host->version < SDHCI_SPEC_200)  in sdhci_config_dma()
332 	if (!(host->flags & SDHCI_REQ_USE_DMA))  in sdhci_config_dma()
336 	if (host->flags & SDHCI_USE_ADMA)  in sdhci_config_dma()
339 	if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_config_dma()
341 		 * If v4 mode, all supported DMA can be 64-bit addressing if  in sdhci_config_dma()
342 		 * controller supports 64-bit system address, otherwise only  in sdhci_config_dma()
343 		 * ADMA can support 64-bit addressing.  in sdhci_config_dma()
345 		if (host->v4_mode) {  in sdhci_config_dma()
349 		} else if (host->flags & SDHCI_USE_ADMA) {  in sdhci_config_dma()
362 static void sdhci_init(struct sdhci_host *host, int soft)  in sdhci_init()
364 	struct mmc_host *mmc = host->mmc;  in sdhci_init()
372 	if (host->v4_mode)  in sdhci_init()
375 	spin_lock_irqsave(&host->lock, flags);  in sdhci_init()
377 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_init()
379 	host->cqe_on = false;  in sdhci_init()
383 		host->clock = 0;  in sdhci_init()
384 		host->reinit_uhs = true;  in sdhci_init()
385 		mmc->ops->set_ios(mmc, &mmc->ios);  in sdhci_init()
391 	u32 cd = host->ier & (SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);  in sdhci_reinit()
402 	if (cd != (host->ier & (SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT)))  in sdhci_reinit()
403 		mmc_detect_change(host->mmc, msecs_to_jiffies(200));  in sdhci_reinit()
410 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in __sdhci_led_activate()
422 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in __sdhci_led_deactivate()
437 	spin_lock_irqsave(&host->lock, flags);  in sdhci_led_control()
439 	if (host->runtime_suspended)  in sdhci_led_control()
447 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_led_control()
450 static int sdhci_led_register(struct sdhci_host *host)  in sdhci_led_register()
452 	struct mmc_host *mmc = host->mmc;  in sdhci_led_register()
454 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in sdhci_led_register()
457 	snprintf(host->led_name, sizeof(host->led_name),  in sdhci_led_register()
460 	host->led.name = host->led_name;  in sdhci_led_register()
461 	host->led.brightness = LED_OFF;  in sdhci_led_register()
462 	host->led.default_trigger = mmc_hostname(mmc);  in sdhci_led_register()
463 	host->led.brightness_set = sdhci_led_control;  in sdhci_led_register()
465 	return led_classdev_register(mmc_dev(mmc), &host->led);  in sdhci_led_register()
470 	if (host->quirks & SDHCI_QUIRK_NO_LED)  in sdhci_led_unregister()
473 	led_classdev_unregister(&host->led);  in sdhci_led_unregister()
486 static inline int sdhci_led_register(struct sdhci_host *host)  in sdhci_led_register()
510 	if (sdhci_data_line_cmd(mrq->cmd))  in sdhci_mod_timer()
511 		mod_timer(&host->data_timer, timeout);  in sdhci_mod_timer()
513 		mod_timer(&host->timer, timeout);  in sdhci_mod_timer()
519 	if (sdhci_data_line_cmd(mrq->cmd))  in sdhci_del_timer()
520 		del_timer(&host->data_timer);  in sdhci_del_timer()
522 		del_timer(&host->timer);  in sdhci_del_timer()
527 	return host->cmd || host->data_cmd;  in sdhci_has_requests()
544 	blksize = host->data->blksz;  in sdhci_read_block_pio()
548 		BUG_ON(!sg_miter_next(&host->sg_miter));  in sdhci_read_block_pio()
550 		len = min(host->sg_miter.length, blksize);  in sdhci_read_block_pio()
552 		blksize -= len;  in sdhci_read_block_pio()
553 		host->sg_miter.consumed = len;  in sdhci_read_block_pio()
555 		buf = host->sg_miter.addr;  in sdhci_read_block_pio()
567 			chunk--;  in sdhci_read_block_pio()
568 			len--;  in sdhci_read_block_pio()
572 	sg_miter_stop(&host->sg_miter);  in sdhci_read_block_pio()
583 	blksize = host->data->blksz;  in sdhci_write_block_pio()
588 		BUG_ON(!sg_miter_next(&host->sg_miter));  in sdhci_write_block_pio()
590 		len = min(host->sg_miter.length, blksize);  in sdhci_write_block_pio()
592 		blksize -= len;  in sdhci_write_block_pio()
593 		host->sg_miter.consumed = len;  in sdhci_write_block_pio()
595 		buf = host->sg_miter.addr;  in sdhci_write_block_pio()
602 			len--;  in sdhci_write_block_pio()
612 	sg_miter_stop(&host->sg_miter);  in sdhci_write_block_pio()
619 	if (host->blocks == 0)  in sdhci_transfer_pio()
622 	if (host->data->flags & MMC_DATA_READ)  in sdhci_transfer_pio()
632 	if ((host->quirks & SDHCI_QUIRK_BROKEN_SMALL_PIO) &&  in sdhci_transfer_pio()
633 		(host->data->blocks == 1))  in sdhci_transfer_pio()
637 		if (host->quirks & SDHCI_QUIRK_PIO_NEEDS_DELAY)  in sdhci_transfer_pio()
640 		if (host->data->flags & MMC_DATA_READ)  in sdhci_transfer_pio()
645 		host->blocks--;  in sdhci_transfer_pio()
646 		if (host->blocks == 0)  in sdhci_transfer_pio()
653 static int sdhci_pre_dma_transfer(struct sdhci_host *host,  in sdhci_pre_dma_transfer()
654 				  struct mmc_data *data, int cookie)  in sdhci_pre_dma_transfer()
656 	int sg_count;  in sdhci_pre_dma_transfer()
662 	if (data->host_cookie == COOKIE_PRE_MAPPED)  in sdhci_pre_dma_transfer()
663 		return data->sg_count;  in sdhci_pre_dma_transfer()
666 	if (host->bounce_buffer) {  in sdhci_pre_dma_transfer()
667 		unsigned int length = data->blksz * data->blocks;  in sdhci_pre_dma_transfer()
669 		if (length > host->bounce_buffer_size) {  in sdhci_pre_dma_transfer()
671 			       mmc_hostname(host->mmc), length,  in sdhci_pre_dma_transfer()
672 			       host->bounce_buffer_size);  in sdhci_pre_dma_transfer()
673 			return -EIO;  in sdhci_pre_dma_transfer()
677 			if (host->ops->copy_to_bounce_buffer) {  in sdhci_pre_dma_transfer()
678 				host->ops->copy_to_bounce_buffer(host,  in sdhci_pre_dma_transfer()
681 				sg_copy_to_buffer(data->sg, data->sg_len,  in sdhci_pre_dma_transfer()
682 						  host->bounce_buffer, length);  in sdhci_pre_dma_transfer()
686 		dma_sync_single_for_device(mmc_dev(host->mmc),  in sdhci_pre_dma_transfer()
687 					   host->bounce_addr,  in sdhci_pre_dma_transfer()
688 					   host->bounce_buffer_size,  in sdhci_pre_dma_transfer()
694 		sg_count = dma_map_sg(mmc_dev(host->mmc),  in sdhci_pre_dma_transfer()
695 				      data->sg, data->sg_len,  in sdhci_pre_dma_transfer()
700 		return -ENOSPC;  in sdhci_pre_dma_transfer()
702 	data->sg_count = sg_count;  in sdhci_pre_dma_transfer()
703 	data->host_cookie = cookie;  in sdhci_pre_dma_transfer()
710 	return kmap_local_page(sg_page(sg)) + sg->offset;  in sdhci_kmap_atomic()
719 			   dma_addr_t addr, int len, unsigned int cmd)  in sdhci_adma_write_desc()  argument
723 	/* 32-bit and 64-bit descriptors have these members in same position */  in sdhci_adma_write_desc()
724 	dma_desc->cmd = cpu_to_le16(cmd);  in sdhci_adma_write_desc()
725 	dma_desc->len = cpu_to_le16(len);  in sdhci_adma_write_desc()
726 	dma_desc->addr_lo = cpu_to_le32(lower_32_bits(addr));  in sdhci_adma_write_desc()
728 	if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_adma_write_desc()
729 		dma_desc->addr_hi = cpu_to_le32(upper_32_bits(addr));  in sdhci_adma_write_desc()
731 	*desc += host->desc_sz;  in sdhci_adma_write_desc()
737 					   int len, unsigned int cmd)  in __sdhci_adma_write_desc()  argument
739 	if (host->ops->adma_write_desc)  in __sdhci_adma_write_desc()
740 		host->ops->adma_write_desc(host, desc, addr, len, cmd);  in __sdhci_adma_write_desc()
742 		sdhci_adma_write_desc(host, desc, addr, len, cmd);  in __sdhci_adma_write_desc()
749 	/* 32-bit and 64-bit descriptors have 'cmd' in same position */  in sdhci_adma_mark_end()
750 	dma_desc->cmd |= cpu_to_le16(ADMA2_END);  in sdhci_adma_mark_end()
754 	struct mmc_data *data, int sg_count)  in sdhci_adma_table_pre()
760 	int len, offset, i;  in sdhci_adma_table_pre()
767 	host->sg_count = sg_count;  in sdhci_adma_table_pre()
769 	desc = host->adma_table;  in sdhci_adma_table_pre()
770 	align = host->align_buffer;  in sdhci_adma_table_pre()
772 	align_addr = host->align_addr;  in sdhci_adma_table_pre()
774 	for_each_sg(data->sg, sg, host->sg_count, i) {  in sdhci_adma_table_pre()
780 		 * be 32-bit aligned. If they aren't, then we use a bounce  in sdhci_adma_table_pre()
784 		offset = (SDHCI_ADMA2_ALIGN - (addr & SDHCI_ADMA2_MASK)) &  in sdhci_adma_table_pre()
787 			if (data->flags & MMC_DATA_WRITE) {  in sdhci_adma_table_pre()
803 			len -= offset;  in sdhci_adma_table_pre()
812 		while (len > host->max_adma) {  in sdhci_adma_table_pre()
813 			int n = 32 * 1024; /* 32KiB*/  in sdhci_adma_table_pre()
817 			len -= n;  in sdhci_adma_table_pre()
829 		WARN_ON((desc - host->adma_table) >= host->adma_table_sz);  in sdhci_adma_table_pre()
832 	if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) {  in sdhci_adma_table_pre()
834 		if (desc != host->adma_table) {  in sdhci_adma_table_pre()
835 			desc -= host->desc_sz;  in sdhci_adma_table_pre()
839 		/* Add a terminating entry - nop, end, valid */  in sdhci_adma_table_pre()
848 	int i, size;  in sdhci_adma_table_post()
852 	if (data->flags & MMC_DATA_READ) {  in sdhci_adma_table_post()
856 		for_each_sg(data->sg, sg, host->sg_count, i)  in sdhci_adma_table_post()
863 			dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,  in sdhci_adma_table_post()
864 					    data->sg_len, DMA_FROM_DEVICE);  in sdhci_adma_table_post()
866 			align = host->align_buffer;  in sdhci_adma_table_post()
868 			for_each_sg(data->sg, sg, host->sg_count, i) {  in sdhci_adma_table_post()
870 					size = SDHCI_ADMA2_ALIGN -  in sdhci_adma_table_post()
887 	if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_set_adma_addr()
893 	if (host->bounce_buffer)  in sdhci_sdma_address()
894 		return host->bounce_addr;  in sdhci_sdma_address()
896 		return sg_dma_address(host->data->sg);  in sdhci_sdma_address()
901 	if (host->v4_mode)  in sdhci_set_sdma_addr()
907 static unsigned int sdhci_target_timeout(struct sdhci_host *host,  in sdhci_target_timeout()
908 					 struct mmc_command *cmd,  in sdhci_target_timeout()  argument
911 	unsigned int target_timeout;  in sdhci_target_timeout()
915 		target_timeout = cmd->busy_timeout * 1000;  in sdhci_target_timeout()
917 		target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000);  in sdhci_target_timeout()
918 		if (host->clock && data->timeout_clks) {  in sdhci_target_timeout()
922 			 * data->timeout_clks is in units of clock cycles.  in sdhci_target_timeout()
923 			 * host->clock is in Hz.  target_timeout is in us.  in sdhci_target_timeout()
926 			val = 1000000ULL * data->timeout_clks;  in sdhci_target_timeout()
927 			if (do_div(val, host->clock))  in sdhci_target_timeout()
937 				  struct mmc_command *cmd)  in sdhci_calc_sw_timeout()  argument
939 	struct mmc_data *data = cmd->data;  in sdhci_calc_sw_timeout()
940 	struct mmc_host *mmc = host->mmc;  in sdhci_calc_sw_timeout()
941 	struct mmc_ios *ios = &mmc->ios;  in sdhci_calc_sw_timeout()
942 	unsigned char bus_width = 1 << ios->bus_width;  in sdhci_calc_sw_timeout()
943 	unsigned int blksz;  in sdhci_calc_sw_timeout()
944 	unsigned int freq;  in sdhci_calc_sw_timeout()
948 	target_timeout = sdhci_target_timeout(host, cmd, data);  in sdhci_calc_sw_timeout()
952 		blksz = data->blksz;  in sdhci_calc_sw_timeout()
953 		freq = mmc->actual_clock ? : host->clock;  in sdhci_calc_sw_timeout()
959 		host->data_timeout = data->blocks * target_timeout +  in sdhci_calc_sw_timeout()
962 		host->data_timeout = target_timeout;  in sdhci_calc_sw_timeout()
965 	if (host->data_timeout)  in sdhci_calc_sw_timeout()
966 		host->data_timeout += MMC_CMD_TRANSFER_TIME;  in sdhci_calc_sw_timeout()
969 static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,  in sdhci_calc_timeout()  argument
981 	 * longer to time out, but that's much better than having a too-short  in sdhci_calc_timeout()
984 	if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)  in sdhci_calc_timeout()
985 		return host->max_timeout_count;  in sdhci_calc_timeout()
988 	if (cmd == NULL)  in sdhci_calc_timeout()
989 		return host->max_timeout_count;  in sdhci_calc_timeout()
991 	data = cmd->data;  in sdhci_calc_timeout()
993 	if (!data && !cmd->busy_timeout)  in sdhci_calc_timeout()
994 		return host->max_timeout_count;  in sdhci_calc_timeout()
997 	target_timeout = sdhci_target_timeout(host, cmd, data);  in sdhci_calc_timeout()
1001 	 * We do this in steps in order to fit inside a 32 bit int.  in sdhci_calc_timeout()
1005 	 * (2) host->timeout_clk < 2^16  in sdhci_calc_timeout()
1010 	current_timeout = (1 << 13) * 1000 / host->timeout_clk;  in sdhci_calc_timeout()
1014 		if (count > host->max_timeout_count) {  in sdhci_calc_timeout()
1015 			if (!(host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT))  in sdhci_calc_timeout()
1016 				DBG("Too large timeout 0x%x requested for CMD%d!\n",  in sdhci_calc_timeout()
1017 				    count, cmd->opcode);  in sdhci_calc_timeout()
1018 			count = host->max_timeout_count;  in sdhci_calc_timeout()
1032 	if (host->flags & SDHCI_REQ_USE_DMA)  in sdhci_set_transfer_irqs()
1033 		host->ier = (host->ier & ~pio_irqs) | dma_irqs;  in sdhci_set_transfer_irqs()
1035 		host->ier = (host->ier & ~dma_irqs) | pio_irqs;  in sdhci_set_transfer_irqs()
1037 	if (host->flags & (SDHCI_AUTO_CMD23 | SDHCI_AUTO_CMD12))  in sdhci_set_transfer_irqs()
1038 		host->ier |= SDHCI_INT_AUTO_CMD_ERR;  in sdhci_set_transfer_irqs()
1040 		host->ier &= ~SDHCI_INT_AUTO_CMD_ERR;  in sdhci_set_transfer_irqs()
1042 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_transfer_irqs()
1043 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_transfer_irqs()
1049 		host->ier |= SDHCI_INT_DATA_TIMEOUT;  in sdhci_set_data_timeout_irq()
1051 		host->ier &= ~SDHCI_INT_DATA_TIMEOUT;  in sdhci_set_data_timeout_irq()
1052 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_set_data_timeout_irq()
1053 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_set_data_timeout_irq()
1057 void __sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)  in __sdhci_set_timeout()  argument
1060 	u8 count = sdhci_calc_timeout(host, cmd, &too_big);  in __sdhci_set_timeout()
1063 	    host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT) {  in __sdhci_set_timeout()
1064 		sdhci_calc_sw_timeout(host, cmd);  in __sdhci_set_timeout()
1066 	} else if (!(host->ier & SDHCI_INT_DATA_TIMEOUT)) {  in __sdhci_set_timeout()
1074 static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_set_timeout()  argument
1076 	if (host->ops->set_timeout)  in sdhci_set_timeout()
1077 		host->ops->set_timeout(host, cmd);  in sdhci_set_timeout()
1079 		__sdhci_set_timeout(host, cmd);  in sdhci_set_timeout()
1084 	WARN_ON(host->data);  in sdhci_initialize_data()
1087 	BUG_ON(data->blksz * data->blocks > 524288);  in sdhci_initialize_data()
1088 	BUG_ON(data->blksz > host->mmc->max_blk_size);  in sdhci_initialize_data()
1089 	BUG_ON(data->blocks > 65535);  in sdhci_initialize_data()
1091 	host->data = data;  in sdhci_initialize_data()
1092 	host->data_early = 0;  in sdhci_initialize_data()
1093 	host->data->bytes_xfered = 0;  in sdhci_initialize_data()
1102 		     SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz),  in sdhci_set_block_info()
1105 	 * For Version 4.10 onwards, if v4 mode is enabled, 32-bit Block Count  in sdhci_set_block_info()
1106 	 * can be supported, in that case 16-bit block count register must be 0.  in sdhci_set_block_info()
1108 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&  in sdhci_set_block_info()
1109 	    (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) {  in sdhci_set_block_info()
1112 		sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT);  in sdhci_set_block_info()
1114 		sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);  in sdhci_set_block_info()
1120 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_prepare_dma()
1122 		unsigned int length_mask, offset_mask;  in sdhci_prepare_dma()
1123 		int i;  in sdhci_prepare_dma()
1125 		host->flags |= SDHCI_REQ_USE_DMA;  in sdhci_prepare_dma()
1136 		if (host->flags & SDHCI_USE_ADMA) {  in sdhci_prepare_dma()
1137 			if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE) {  in sdhci_prepare_dma()
1147 			if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE)  in sdhci_prepare_dma()
1149 			if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR)  in sdhci_prepare_dma()
1154 			for_each_sg(data->sg, sg, data->sg_len, i) {  in sdhci_prepare_dma()
1155 				if (sg->length & length_mask) {  in sdhci_prepare_dma()
1157 					    sg->length);  in sdhci_prepare_dma()
1158 					host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_dma()
1161 				if (sg->offset & offset_mask) {  in sdhci_prepare_dma()
1163 					host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_dma()
1172 	if (host->flags & SDHCI_REQ_USE_DMA) {  in sdhci_prepare_dma()
1173 		int sg_cnt = sdhci_pre_dma_transfer(host, data, COOKIE_MAPPED);  in sdhci_prepare_dma()
1181 			host->flags &= ~SDHCI_REQ_USE_DMA;  in sdhci_prepare_dma()
1182 		} else if (host->flags & SDHCI_USE_ADMA) {  in sdhci_prepare_dma()
1184 			sdhci_set_adma_addr(host, host->adma_addr);  in sdhci_prepare_dma()
1191 	if (!(host->flags & SDHCI_REQ_USE_DMA)) {  in sdhci_prepare_dma()
1192 		int flags;  in sdhci_prepare_dma()
1195 		if (host->data->flags & MMC_DATA_READ)  in sdhci_prepare_dma()
1199 		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);  in sdhci_prepare_dma()
1200 		host->blocks = data->blocks;  in sdhci_prepare_dma()
1207 static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_prepare_data()  argument
1209 	struct mmc_data *data = cmd->data;  in sdhci_prepare_data()
1220 static int sdhci_external_dma_init(struct sdhci_host *host)  in sdhci_external_dma_init()
1222 	int ret = 0;  in sdhci_external_dma_init()
1223 	struct mmc_host *mmc = host->mmc;  in sdhci_external_dma_init()
1225 	host->tx_chan = dma_request_chan(mmc_dev(mmc), "tx");  in sdhci_external_dma_init()
1226 	if (IS_ERR(host->tx_chan)) {  in sdhci_external_dma_init()
1227 		ret = PTR_ERR(host->tx_chan);  in sdhci_external_dma_init()
1228 		if (ret != -EPROBE_DEFER)  in sdhci_external_dma_init()
1230 		host->tx_chan = NULL;  in sdhci_external_dma_init()
1234 	host->rx_chan = dma_request_chan(mmc_dev(mmc), "rx");  in sdhci_external_dma_init()
1235 	if (IS_ERR(host->rx_chan)) {  in sdhci_external_dma_init()
1236 		if (host->tx_chan) {  in sdhci_external_dma_init()
1237 			dma_release_channel(host->tx_chan);  in sdhci_external_dma_init()
1238 			host->tx_chan = NULL;  in sdhci_external_dma_init()
1241 		ret = PTR_ERR(host->rx_chan);  in sdhci_external_dma_init()
1242 		if (ret != -EPROBE_DEFER)  in sdhci_external_dma_init()
1244 		host->rx_chan = NULL;  in sdhci_external_dma_init()
1253 	return data->flags & MMC_DATA_WRITE ? host->tx_chan : host->rx_chan;  in sdhci_external_dma_channel()
1256 static int sdhci_external_dma_setup(struct sdhci_host *host,  in sdhci_external_dma_setup()
1257 				    struct mmc_command *cmd)  in sdhci_external_dma_setup()  argument
1259 	int ret, i;  in sdhci_external_dma_setup()
1262 	struct mmc_data *data = cmd->data;  in sdhci_external_dma_setup()
1266 	int sg_cnt;  in sdhci_external_dma_setup()
1268 	if (!host->mapbase)  in sdhci_external_dma_setup()
1269 		return -EINVAL;  in sdhci_external_dma_setup()
1272 	cfg.src_addr = host->mapbase + SDHCI_BUFFER;  in sdhci_external_dma_setup()
1273 	cfg.dst_addr = host->mapbase + SDHCI_BUFFER;  in sdhci_external_dma_setup()
1276 	cfg.src_maxburst = data->blksz / 4;  in sdhci_external_dma_setup()
1277 	cfg.dst_maxburst = data->blksz / 4;  in sdhci_external_dma_setup()
1280 	for (i = 0; i < data->sg_len; i++) {  in sdhci_external_dma_setup()
1281 		if ((data->sg + i)->length % data->blksz)  in sdhci_external_dma_setup()
1282 			return -EINVAL;  in sdhci_external_dma_setup()
1293 		return -EINVAL;  in sdhci_external_dma_setup()
1295 	dir = data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;  in sdhci_external_dma_setup()
1296 	desc = dmaengine_prep_slave_sg(chan, data->sg, data->sg_len, dir,  in sdhci_external_dma_setup()
1299 		return -EINVAL;  in sdhci_external_dma_setup()
1301 	desc->callback = NULL;  in sdhci_external_dma_setup()
1302 	desc->callback_param = NULL;  in sdhci_external_dma_setup()
1313 	if (host->tx_chan) {  in sdhci_external_dma_release()
1314 		dma_release_channel(host->tx_chan);  in sdhci_external_dma_release()
1315 		host->tx_chan = NULL;  in sdhci_external_dma_release()
1318 	if (host->rx_chan) {  in sdhci_external_dma_release()
1319 		dma_release_channel(host->rx_chan);  in sdhci_external_dma_release()
1320 		host->rx_chan = NULL;  in sdhci_external_dma_release()
1327 					      struct mmc_command *cmd)  in __sdhci_external_dma_prepare_data()  argument
1329 	struct mmc_data *data = cmd->data;  in __sdhci_external_dma_prepare_data()
1333 	host->flags |= SDHCI_REQ_USE_DMA;  in __sdhci_external_dma_prepare_data()
1340 					    struct mmc_command *cmd)  in sdhci_external_dma_prepare_data()  argument
1342 	if (!sdhci_external_dma_setup(host, cmd)) {  in sdhci_external_dma_prepare_data()
1343 		__sdhci_external_dma_prepare_data(host, cmd);  in sdhci_external_dma_prepare_data()
1347 		       mmc_hostname(host->mmc));  in sdhci_external_dma_prepare_data()
1348 		sdhci_prepare_data(host, cmd);  in sdhci_external_dma_prepare_data()
1353 					    struct mmc_command *cmd)  in sdhci_external_dma_pre_transfer()  argument
1357 	if (!cmd->data)  in sdhci_external_dma_pre_transfer()
1360 	chan = sdhci_external_dma_channel(host, cmd->data);  in sdhci_external_dma_pre_transfer()
1367 static inline int sdhci_external_dma_init(struct sdhci_host *host)  in sdhci_external_dma_init()
1369 	return -EOPNOTSUPP;  in sdhci_external_dma_init()
1377 						   struct mmc_command *cmd)  in sdhci_external_dma_prepare_data()  argument
1384 						   struct mmc_command *cmd)  in sdhci_external_dma_pre_transfer()  argument
1398 	host->use_external_dma = en;  in sdhci_switch_external_dma()
1405 	return !mrq->sbc && (host->flags & SDHCI_AUTO_CMD12) &&  in sdhci_auto_cmd12()
1406 	       !mrq->cap_cmd_during_tfr;  in sdhci_auto_cmd12()
1412 	return mrq->sbc && (host->flags & SDHCI_AUTO_CMD23);  in sdhci_auto_cmd23()
1418 	return mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23);  in sdhci_manual_cmd23()
1422 					 struct mmc_command *cmd,  in sdhci_auto_cmd_select()  argument
1425 	bool use_cmd12 = sdhci_auto_cmd12(host, cmd->mrq) &&  in sdhci_auto_cmd_select()
1426 			 (cmd->opcode != SD_IO_RW_EXTENDED);  in sdhci_auto_cmd_select()
1427 	bool use_cmd23 = sdhci_auto_cmd23(host, cmd->mrq);  in sdhci_auto_cmd_select()
1431 	 * In case of Version 4.10 or later, use of 'Auto CMD Auto  in sdhci_auto_cmd_select()
1434 	 * here because some controllers (e.g sdhci-of-dwmshc) expect it.  in sdhci_auto_cmd_select()
1436 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&  in sdhci_auto_cmd_select()
1452 	 * on successful completion (so no Auto-CMD12).  in sdhci_auto_cmd_select()
1461 	struct mmc_command *cmd)  in sdhci_set_transfer_mode()  argument
1464 	struct mmc_data *data = cmd->data;  in sdhci_set_transfer_mode()
1467 		if (host->quirks2 &  in sdhci_set_transfer_mode()
1470 			if (!mmc_op_tuning(cmd->opcode))  in sdhci_set_transfer_mode()
1473 		/* clear Auto CMD settings for no data CMDs */  in sdhci_set_transfer_mode()
1481 	WARN_ON(!host->data);  in sdhci_set_transfer_mode()
1483 	if (!(host->quirks2 & SDHCI_QUIRK2_SUPPORT_SINGLE))  in sdhci_set_transfer_mode()
1486 	if (mmc_op_multi(cmd->opcode) || data->blocks > 1) {  in sdhci_set_transfer_mode()
1488 		sdhci_auto_cmd_select(host, cmd, &mode);  in sdhci_set_transfer_mode()
1489 		if (sdhci_auto_cmd23(host, cmd->mrq))  in sdhci_set_transfer_mode()
1490 			sdhci_writel(host, cmd->mrq->sbc->arg, SDHCI_ARGUMENT2);  in sdhci_set_transfer_mode()
1493 	if (data->flags & MMC_DATA_READ)  in sdhci_set_transfer_mode()
1495 	if (host->flags & SDHCI_REQ_USE_DMA)  in sdhci_set_transfer_mode()
1503 	return (!(host->flags & SDHCI_DEVICE_DEAD) &&  in sdhci_needs_reset()
1504 		((mrq->cmd && mrq->cmd->error) ||  in sdhci_needs_reset()
1505 		 (mrq->sbc && mrq->sbc->error) ||  in sdhci_needs_reset()
1506 		 (mrq->data && mrq->data->stop && mrq->data->stop->error) ||  in sdhci_needs_reset()
1507 		 (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)));  in sdhci_needs_reset()
1513 	int i;  in sdhci_set_mrq_done()
1516 		if (host->mrqs_done[i] == mrq) {  in sdhci_set_mrq_done()
1523 		if (!host->mrqs_done[i]) {  in sdhci_set_mrq_done()
1524 			host->mrqs_done[i] = mrq;  in sdhci_set_mrq_done()
1534 	if (host->cmd && host->cmd->mrq == mrq)  in __sdhci_finish_mrq()
1535 		host->cmd = NULL;  in __sdhci_finish_mrq()
1537 	if (host->data_cmd && host->data_cmd->mrq == mrq)  in __sdhci_finish_mrq()
1538 		host->data_cmd = NULL;  in __sdhci_finish_mrq()
1540 	if (host->deferred_cmd && host->deferred_cmd->mrq == mrq)  in __sdhci_finish_mrq()
1541 		host->deferred_cmd = NULL;  in __sdhci_finish_mrq()
1543 	if (host->data && host->data->mrq == mrq)  in __sdhci_finish_mrq()
1544 		host->data = NULL;  in __sdhci_finish_mrq()
1547 		host->pending_reset = true;  in __sdhci_finish_mrq()
1562 	queue_work(host->complete_wq, &host->complete_work);  in sdhci_finish_mrq()
1568 	struct mmc_command *data_cmd = host->data_cmd;  in __sdhci_finish_data_common()
1569 	struct mmc_data *data = host->data;  in __sdhci_finish_data_common()
1571 	host->data = NULL;  in __sdhci_finish_data_common()
1572 	host->data_cmd = NULL;  in __sdhci_finish_data_common()
1578 	if (data->error) {  in __sdhci_finish_data_common()
1580 			host->pending_reset = true;  in __sdhci_finish_data_common()
1581 		else if (!host->cmd || host->cmd == data_cmd)  in __sdhci_finish_data_common()
1587 	if ((host->flags & (SDHCI_REQ_USE_DMA | SDHCI_USE_ADMA)) ==  in __sdhci_finish_data_common()
1598 	if (data->error)  in __sdhci_finish_data_common()
1599 		data->bytes_xfered = 0;  in __sdhci_finish_data_common()
1601 		data->bytes_xfered = data->blksz * data->blocks;  in __sdhci_finish_data_common()
1607 	struct mmc_data *data = host->data;  in __sdhci_finish_data()
1612 	 * Need to send CMD12 if -  in __sdhci_finish_data()
1613 	 * a) open-ended multiblock transfer not using auto CMD12 (no CMD23)  in __sdhci_finish_data()
1616 	if (data->stop &&  in __sdhci_finish_data()
1617 	    ((!data->mrq->sbc && !sdhci_auto_cmd12(host, data->mrq)) ||  in __sdhci_finish_data()
1618 	     data->error)) {  in __sdhci_finish_data()
1624 		if (data->mrq->cap_cmd_during_tfr) {  in __sdhci_finish_data()
1625 			__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1628 			host->cmd = NULL;  in __sdhci_finish_data()
1629 			if (!sdhci_send_command(host, data->stop)) {  in __sdhci_finish_data()
1635 					data->stop->error = -EIO;  in __sdhci_finish_data()
1636 					__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1638 					WARN_ON(host->deferred_cmd);  in __sdhci_finish_data()
1639 					host->deferred_cmd = data->stop;  in __sdhci_finish_data()
1644 		__sdhci_finish_mrq(host, data->mrq);  in __sdhci_finish_data()
1653 static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_send_command()  argument
1655 	int flags;  in sdhci_send_command()
1659 	WARN_ON(host->cmd);  in sdhci_send_command()
1662 	cmd->error = 0;  in sdhci_send_command()
1664 	if ((host->quirks2 & SDHCI_QUIRK2_STOP_WITH_TC) &&  in sdhci_send_command()
1665 	    cmd->opcode == MMC_STOP_TRANSMISSION)  in sdhci_send_command()
1666 		cmd->flags |= MMC_RSP_BUSY;  in sdhci_send_command()
1669 	if (sdhci_data_line_cmd(cmd))  in sdhci_send_command()
1674 	if (cmd->mrq->data && (cmd == cmd->mrq->data->stop))  in sdhci_send_command()
1680 	host->cmd = cmd;  in sdhci_send_command()
1681 	host->data_timeout = 0;  in sdhci_send_command()
1682 	if (sdhci_data_line_cmd(cmd)) {  in sdhci_send_command()
1683 		WARN_ON(host->data_cmd);  in sdhci_send_command()
1684 		host->data_cmd = cmd;  in sdhci_send_command()
1685 		sdhci_set_timeout(host, cmd);  in sdhci_send_command()
1688 	if (cmd->data) {  in sdhci_send_command()
1689 		if (host->use_external_dma)  in sdhci_send_command()
1690 			sdhci_external_dma_prepare_data(host, cmd);  in sdhci_send_command()
1692 			sdhci_prepare_data(host, cmd);  in sdhci_send_command()
1695 	sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT);  in sdhci_send_command()
1697 	sdhci_set_transfer_mode(host, cmd);  in sdhci_send_command()
1699 	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {  in sdhci_send_command()
1702 		 * This does not happen in practice because 136-bit response  in sdhci_send_command()
1706 		cmd->flags &= ~MMC_RSP_BUSY;  in sdhci_send_command()
1709 	if (!(cmd->flags & MMC_RSP_PRESENT))  in sdhci_send_command()
1711 	else if (cmd->flags & MMC_RSP_136)  in sdhci_send_command()
1713 	else if (cmd->flags & MMC_RSP_BUSY)  in sdhci_send_command()
1718 	if (cmd->flags & MMC_RSP_CRC)  in sdhci_send_command()
1720 	if (cmd->flags & MMC_RSP_OPCODE)  in sdhci_send_command()
1724 	if (cmd->data || mmc_op_tuning(cmd->opcode))  in sdhci_send_command()
1728 	if (host->data_timeout)  in sdhci_send_command()
1729 		timeout += nsecs_to_jiffies(host->data_timeout);  in sdhci_send_command()
1730 	else if (!cmd->data && cmd->busy_timeout > 9000)  in sdhci_send_command()
1731 		timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ;  in sdhci_send_command()
1734 	sdhci_mod_timer(host, cmd->mrq, timeout);  in sdhci_send_command()
1736 	if (host->use_external_dma)  in sdhci_send_command()
1737 		sdhci_external_dma_pre_transfer(host, cmd);  in sdhci_send_command()
1739 	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);  in sdhci_send_command()
1745 			 struct mmc_command *cmd, bool present)  in sdhci_present_error()  argument
1747 	if (!present || host->flags & SDHCI_DEVICE_DEAD) {  in sdhci_present_error()
1748 		cmd->error = -ENOMEDIUM;  in sdhci_present_error()
1757 				     struct mmc_command *cmd,  in sdhci_send_command_retry()  argument
1759 	__releases(host->lock)  in sdhci_send_command_retry()
1760 	__acquires(host->lock)  in sdhci_send_command_retry()
1762 	struct mmc_command *deferred_cmd = host->deferred_cmd;  in sdhci_send_command_retry()
1763 	int timeout = 10; /* Approx. 10 ms */  in sdhci_send_command_retry()
1766 	while (!sdhci_send_command(host, cmd)) {  in sdhci_send_command_retry()
1767 		if (!timeout--) {  in sdhci_send_command_retry()
1769 			       mmc_hostname(host->mmc));  in sdhci_send_command_retry()
1772 			cmd->error = -EIO;  in sdhci_send_command_retry()
1776 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_command_retry()
1780 		present = host->mmc->ops->get_cd(host->mmc);  in sdhci_send_command_retry()
1782 		spin_lock_irqsave(&host->lock, flags);  in sdhci_send_command_retry()
1785 		if (cmd == deferred_cmd && cmd != host->deferred_cmd)  in sdhci_send_command_retry()
1788 		if (sdhci_present_error(host, cmd, present))  in sdhci_send_command_retry()
1792 	if (cmd == host->deferred_cmd)  in sdhci_send_command_retry()
1793 		host->deferred_cmd = NULL;  in sdhci_send_command_retry()
1798 static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd)  in sdhci_read_rsp_136()  argument
1800 	int i, reg;  in sdhci_read_rsp_136()
1803 		reg = SDHCI_RESPONSE + (3 - i) * 4;  in sdhci_read_rsp_136()
1804 		cmd->resp[i] = sdhci_readl(host, reg);  in sdhci_read_rsp_136()
1807 	if (host->quirks2 & SDHCI_QUIRK2_RSP_136_HAS_CRC)  in sdhci_read_rsp_136()
1812 		cmd->resp[i] <<= 8;  in sdhci_read_rsp_136()
1814 			cmd->resp[i] |= cmd->resp[i + 1] >> 24;  in sdhci_read_rsp_136()
1820 	struct mmc_command *cmd = host->cmd;  in sdhci_finish_command()  local
1822 	host->cmd = NULL;  in sdhci_finish_command()
1824 	if (cmd->flags & MMC_RSP_PRESENT) {  in sdhci_finish_command()
1825 		if (cmd->flags & MMC_RSP_136) {  in sdhci_finish_command()
1826 			sdhci_read_rsp_136(host, cmd);  in sdhci_finish_command()
1828 			cmd->resp[0] = sdhci_readl(host, SDHCI_RESPONSE);  in sdhci_finish_command()
1832 	if (cmd->mrq->cap_cmd_during_tfr && cmd == cmd->mrq->cmd)  in sdhci_finish_command()
1833 		mmc_command_done(host->mmc, cmd->mrq);  in sdhci_finish_command()
1845 	if (cmd->flags & MMC_RSP_BUSY) {  in sdhci_finish_command()
1846 		if (cmd->data) {  in sdhci_finish_command()
1848 		} else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) &&  in sdhci_finish_command()
1849 			   cmd == host->data_cmd) {  in sdhci_finish_command()
1856 	if (cmd == cmd->mrq->sbc) {  in sdhci_finish_command()
1857 		if (!sdhci_send_command(host, cmd->mrq->cmd)) {  in sdhci_finish_command()
1858 			WARN_ON(host->deferred_cmd);  in sdhci_finish_command()
1859 			host->deferred_cmd = cmd->mrq->cmd;  in sdhci_finish_command()
1864 		if (host->data && host->data_early)  in sdhci_finish_command()
1867 		if (!cmd->data)  in sdhci_finish_command()
1868 			__sdhci_finish_mrq(host, cmd->mrq);  in sdhci_finish_command()
1876 	switch (host->timing) {  in sdhci_get_preset_value()
1908 		pr_warn("%s: Invalid UHS-I mode selected\n",  in sdhci_get_preset_value()
1909 			mmc_hostname(host->mmc));  in sdhci_get_preset_value()
1916 u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,  in sdhci_calc_clk()
1917 		   unsigned int *actual_clock)  in sdhci_calc_clk()
1919 	int div = 0; /* Initialized for compiler warning */  in sdhci_calc_clk()
1920 	int real_div = div, clk_mul = 1;  in sdhci_calc_clk()
1924 	if (host->version >= SDHCI_SPEC_300) {  in sdhci_calc_clk()
1925 		if (host->preset_enabled) {  in sdhci_calc_clk()
1931 			if (host->clk_mul &&  in sdhci_calc_clk()
1935 				clk_mul = host->clk_mul;  in sdhci_calc_clk()
1937 				real_div = max_t(int, 1, div << 1);  in sdhci_calc_clk()
1946 		if (host->clk_mul) {  in sdhci_calc_clk()
1948 				if ((host->max_clk * host->clk_mul / div)  in sdhci_calc_clk()
1952 			if ((host->max_clk * host->clk_mul / div) <= clock) {  in sdhci_calc_clk()
1959 				clk_mul = host->clk_mul;  in sdhci_calc_clk()
1960 				div--;  in sdhci_calc_clk()
1970 		if (!host->clk_mul || switch_base_clk) {  in sdhci_calc_clk()
1972 			if (host->max_clk <= clock)  in sdhci_calc_clk()
1977 					if ((host->max_clk / div) <= clock)  in sdhci_calc_clk()
1983 			if ((host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN)  in sdhci_calc_clk()
1984 				&& !div && host->max_clk <= 25000000)  in sdhci_calc_clk()
1990 			if ((host->max_clk / div) <= clock)  in sdhci_calc_clk()
1999 		*actual_clock = (host->max_clk * clk_mul) / real_div;  in sdhci_calc_clk()
2025 			       mmc_hostname(host->mmc));  in sdhci_enable_clk()
2033 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode) {  in sdhci_enable_clk()
2048 				       mmc_hostname(host->mmc));  in sdhci_enable_clk()
2062 void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)  in sdhci_set_clock()
2066 	host->mmc->actual_clock = 0;  in sdhci_set_clock()
2073 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);  in sdhci_set_clock()
2081 	struct mmc_host *mmc = host->mmc;  in sdhci_set_power_reg()
2083 	mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);  in sdhci_set_power_reg()
2130 			     mmc_hostname(host->mmc), vdd);  in sdhci_set_power_noreg()
2134 	if (host->pwr == pwr)  in sdhci_set_power_noreg()
2137 	host->pwr = pwr;  in sdhci_set_power_noreg()
2141 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_set_power_noreg()
2148 		if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))  in sdhci_set_power_noreg()
2156 		if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)  in sdhci_set_power_noreg()
2163 		if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON)  in sdhci_set_power_noreg()
2167 		 * Some controllers need an extra 10ms delay of 10ms before  in sdhci_set_power_noreg()
2170 		if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)  in sdhci_set_power_noreg()
2179 	if (IS_ERR(host->mmc->supply.vmmc))  in sdhci_set_power()
2196 	if (!IS_ERR(host->mmc->supply.vmmc)) {  in sdhci_set_power_and_bus_voltage()
2197 		struct mmc_host *mmc = host->mmc;  in sdhci_set_power_and_bus_voltage()
2199 		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);  in sdhci_set_power_and_bus_voltage()
2214 	struct mmc_command *cmd;  in sdhci_request()  local
2219 	present = mmc->ops->get_cd(mmc);  in sdhci_request()
2221 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request()
2225 	if (sdhci_present_error(host, mrq->cmd, present))  in sdhci_request()
2228 	cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;  in sdhci_request()
2230 	if (!sdhci_send_command_retry(host, cmd, flags))  in sdhci_request()
2233 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request()
2239 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request()
2243 int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq)  in sdhci_request_atomic()
2246 	struct mmc_command *cmd;  in sdhci_request_atomic()  local
2248 	int ret = 0;  in sdhci_request_atomic()
2250 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request_atomic()
2252 	if (sdhci_present_error(host, mrq->cmd, true)) {  in sdhci_request_atomic()
2257 	cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;  in sdhci_request_atomic()
2263 	 * again in non-atomic context. So we should not finish this request  in sdhci_request_atomic()
2266 	if (!sdhci_send_command(host, cmd))  in sdhci_request_atomic()
2267 		ret = -EBUSY;  in sdhci_request_atomic()
2272 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_atomic()
2277 void sdhci_set_bus_width(struct sdhci_host *host, int width)  in sdhci_set_bus_width()
2286 		if (host->mmc->caps & MMC_CAP_8_BIT_DATA)  in sdhci_set_bus_width()
2317 		ctrl_2 |= SDHCI_CTRL_HS400; /* Non-standard */  in sdhci_set_uhs_signaling()
2338 	return !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) &&  in sdhci_preset_needed()
2349 	return !host->preset_enabled &&  in sdhci_presetable_values_change()
2350 	       (sdhci_preset_needed(host, ios->timing) || host->drv_type != ios->drv_type);  in sdhci_presetable_values_change()
2361 	if (ios->power_mode == MMC_POWER_OFF) {  in sdhci_set_ios_common()
2366 	if (host->version >= SDHCI_SPEC_300 &&  in sdhci_set_ios_common()
2367 		(ios->power_mode == MMC_POWER_UP) &&  in sdhci_set_ios_common()
2368 		!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN))  in sdhci_set_ios_common()
2371 	if (!ios->clock || ios->clock != host->clock) {  in sdhci_set_ios_common()
2372 		host->ops->set_clock(host, ios->clock);  in sdhci_set_ios_common()
2373 		host->clock = ios->clock;  in sdhci_set_ios_common()
2375 		if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK &&  in sdhci_set_ios_common()
2376 		    host->clock) {  in sdhci_set_ios_common()
2377 			host->timeout_clk = mmc->actual_clock ?  in sdhci_set_ios_common()
2378 						mmc->actual_clock / 1000 :  in sdhci_set_ios_common()
2379 						host->clock / 1000;  in sdhci_set_ios_common()
2380 			mmc->max_busy_timeout =  in sdhci_set_ios_common()
2381 				host->ops->get_max_timeout_count ?  in sdhci_set_ios_common()
2382 				host->ops->get_max_timeout_count(host) :  in sdhci_set_ios_common()
2384 			mmc->max_busy_timeout /= host->timeout_clk;  in sdhci_set_ios_common()
2393 	bool reinit_uhs = host->reinit_uhs;  in sdhci_set_ios()
2397 	host->reinit_uhs = false;  in sdhci_set_ios()
2399 	if (ios->power_mode == MMC_POWER_UNDEFINED)  in sdhci_set_ios()
2402 	if (host->flags & SDHCI_DEVICE_DEAD) {  in sdhci_set_ios()
2403 		if (!IS_ERR(mmc->supply.vmmc) &&  in sdhci_set_ios()
2404 		    ios->power_mode == MMC_POWER_OFF)  in sdhci_set_ios()
2405 			mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);  in sdhci_set_ios()
2409 	turning_on_clk = ios->clock != host->clock && ios->clock && !host->clock;  in sdhci_set_ios()
2413 	if (host->ops->set_power)  in sdhci_set_ios()
2414 		host->ops->set_power(host, ios->power_mode, ios->vdd);  in sdhci_set_ios()
2416 		sdhci_set_power(host, ios->power_mode, ios->vdd);  in sdhci_set_ios()
2418 	if (host->ops->platform_send_init_74_clocks)  in sdhci_set_ios()
2419 		host->ops->platform_send_init_74_clocks(host, ios->power_mode);  in sdhci_set_ios()
2421 	host->ops->set_bus_width(host, ios->bus_width);  in sdhci_set_ios()
2429 	    host->timing == ios->timing &&  in sdhci_set_ios()
2430 	    host->version >= SDHCI_SPEC_300 &&  in sdhci_set_ios()
2436 	if (!(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) {  in sdhci_set_ios()
2437 		if (ios->timing == MMC_TIMING_SD_HS ||  in sdhci_set_ios()
2438 		     ios->timing == MMC_TIMING_MMC_HS ||  in sdhci_set_ios()
2439 		     ios->timing == MMC_TIMING_MMC_HS400 ||  in sdhci_set_ios()
2440 		     ios->timing == MMC_TIMING_MMC_HS200 ||  in sdhci_set_ios()
2441 		     ios->timing == MMC_TIMING_MMC_DDR52 ||  in sdhci_set_ios()
2442 		     ios->timing == MMC_TIMING_UHS_SDR50 ||  in sdhci_set_ios()
2443 		     ios->timing == MMC_TIMING_UHS_SDR104 ||  in sdhci_set_ios()
2444 		     ios->timing == MMC_TIMING_UHS_DDR50 ||  in sdhci_set_ios()
2445 		     ios->timing == MMC_TIMING_UHS_SDR25)  in sdhci_set_ios()
2451 	if (host->version >= SDHCI_SPEC_300) {  in sdhci_set_ios()
2468 		if (!host->preset_enabled) {  in sdhci_set_ios()
2475 			if (ios->drv_type == MMC_SET_DRIVER_TYPE_A)  in sdhci_set_ios()
2477 			else if (ios->drv_type == MMC_SET_DRIVER_TYPE_B)  in sdhci_set_ios()
2479 			else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C)  in sdhci_set_ios()
2481 			else if (ios->drv_type == MMC_SET_DRIVER_TYPE_D)  in sdhci_set_ios()
2490 			host->drv_type = ios->drv_type;  in sdhci_set_ios()
2493 		host->ops->set_uhs_signaling(host, ios->timing);  in sdhci_set_ios()
2494 		host->timing = ios->timing;  in sdhci_set_ios()
2496 		if (sdhci_preset_needed(host, ios->timing)) {  in sdhci_set_ios()
2501 			ios->drv_type = FIELD_GET(SDHCI_PRESET_DRV_MASK,  in sdhci_set_ios()
2503 			host->drv_type = ios->drv_type;  in sdhci_set_ios()
2506 		/* Re-enable SD Clock */  in sdhci_set_ios()
2507 		host->ops->set_clock(host, host->clock);  in sdhci_set_ios()
2513 static int sdhci_get_cd(struct mmc_host *mmc)  in sdhci_get_cd()
2516 	int gpio_cd = mmc_gpio_get_cd(mmc);  in sdhci_get_cd()
2518 	if (host->flags & SDHCI_DEVICE_DEAD)  in sdhci_get_cd()
2533 	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)  in sdhci_get_cd()
2540 int sdhci_get_cd_nogpio(struct mmc_host *mmc)  in sdhci_get_cd_nogpio()
2544 	int ret = 0;  in sdhci_get_cd_nogpio()
2546 	spin_lock_irqsave(&host->lock, flags);  in sdhci_get_cd_nogpio()
2548 	if (host->flags & SDHCI_DEVICE_DEAD)  in sdhci_get_cd_nogpio()
2553 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_get_cd_nogpio()
2559 int sdhci_get_ro(struct mmc_host *mmc)  in sdhci_get_ro()
2563 	int is_readonly;  in sdhci_get_ro()
2565 	if (host->flags & SDHCI_DEVICE_DEAD) {  in sdhci_get_ro()
2567 	} else if (host->ops->get_ro) {  in sdhci_get_ro()
2568 		is_readonly = host->ops->get_ro(host);  in sdhci_get_ro()
2572 		allow_invert = !(mmc->caps2 & MMC_CAP2_RO_ACTIVE_HIGH);  in sdhci_get_ro()
2581 	    (host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT))  in sdhci_get_ro()
2592 	if (host->ops && host->ops->hw_reset)  in sdhci_hw_reset()
2593 		host->ops->hw_reset(host);  in sdhci_hw_reset()
2596 static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)  in sdhci_enable_sdio_irq_nolock()
2598 	if (!(host->flags & SDHCI_DEVICE_DEAD)) {  in sdhci_enable_sdio_irq_nolock()
2600 			host->ier |= SDHCI_INT_CARD_INT;  in sdhci_enable_sdio_irq_nolock()
2602 			host->ier &= ~SDHCI_INT_CARD_INT;  in sdhci_enable_sdio_irq_nolock()
2604 		sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_enable_sdio_irq_nolock()
2605 		sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_enable_sdio_irq_nolock()
2609 void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)  in sdhci_enable_sdio_irq()
2617 	spin_lock_irqsave(&host->lock, flags);  in sdhci_enable_sdio_irq()
2619 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_enable_sdio_irq()
2631 	spin_lock_irqsave(&host->lock, flags);  in sdhci_ack_sdio_irq()
2633 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_ack_sdio_irq()
2636 int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,  in sdhci_start_signal_voltage_switch()
2641 	int ret;  in sdhci_start_signal_voltage_switch()
2647 	if (host->version < SDHCI_SPEC_300)  in sdhci_start_signal_voltage_switch()
2652 	switch (ios->signal_voltage) {  in sdhci_start_signal_voltage_switch()
2654 		if (!(host->flags & SDHCI_SIGNALING_330))  in sdhci_start_signal_voltage_switch()
2655 			return -EINVAL;  in sdhci_start_signal_voltage_switch()
2660 		if (!IS_ERR(mmc->supply.vqmmc)) {  in sdhci_start_signal_voltage_switch()
2665 				return -EIO;  in sdhci_start_signal_voltage_switch()
2679 		return -EAGAIN;  in sdhci_start_signal_voltage_switch()
2681 		if (!(host->flags & SDHCI_SIGNALING_180))  in sdhci_start_signal_voltage_switch()
2682 			return -EINVAL;  in sdhci_start_signal_voltage_switch()
2683 		if (!IS_ERR(mmc->supply.vqmmc)) {  in sdhci_start_signal_voltage_switch()
2688 				return -EIO;  in sdhci_start_signal_voltage_switch()
2700 		if (host->ops->voltage_switch)  in sdhci_start_signal_voltage_switch()
2701 			host->ops->voltage_switch(host);  in sdhci_start_signal_voltage_switch()
2711 		return -EAGAIN;  in sdhci_start_signal_voltage_switch()
2713 		if (!(host->flags & SDHCI_SIGNALING_120))  in sdhci_start_signal_voltage_switch()
2714 			return -EINVAL;  in sdhci_start_signal_voltage_switch()
2715 		if (!IS_ERR(mmc->supply.vqmmc)) {  in sdhci_start_signal_voltage_switch()
2720 				return -EIO;  in sdhci_start_signal_voltage_switch()
2731 static int sdhci_card_busy(struct mmc_host *mmc)  in sdhci_card_busy()
2742 static int sdhci_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios)  in sdhci_prepare_hs400_tuning()
2747 	spin_lock_irqsave(&host->lock, flags);  in sdhci_prepare_hs400_tuning()
2748 	host->flags |= SDHCI_HS400_TUNING;  in sdhci_prepare_hs400_tuning()
2749 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_prepare_hs400_tuning()
2760 	if (host->quirks2 & SDHCI_QUIRK2_TUNING_WORK_AROUND)  in sdhci_start_tuning()
2781 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_end_tuning()
2782 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_end_tuning()
2805 	mmc_send_abort_tuning(host->mmc, opcode);  in sdhci_abort_tuning()
2812  * automatically) so mmc_send_tuning() will return -EIO. Also the tuning command
2818 	struct mmc_host *mmc = host->mmc;  in sdhci_send_tuning()
2819 	struct mmc_command cmd = {};  in sdhci_send_tuning()  local
2822 	u32 b = host->sdma_boundary;  in sdhci_send_tuning()
2824 	spin_lock_irqsave(&host->lock, flags);  in sdhci_send_tuning()
2826 	cmd.opcode = opcode;  in sdhci_send_tuning()
2827 	cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;  in sdhci_send_tuning()
2828 	cmd.mrq = &mrq;  in sdhci_send_tuning()
2830 	mrq.cmd = &cmd;  in sdhci_send_tuning()
2836 	if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200 &&  in sdhci_send_tuning()
2837 	    mmc->ios.bus_width == MMC_BUS_WIDTH_8)  in sdhci_send_tuning()
2850 	if (!sdhci_send_command_retry(host, &cmd, flags)) {  in sdhci_send_tuning()
2851 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_tuning()
2852 		host->tuning_done = 0;  in sdhci_send_tuning()
2856 	host->cmd = NULL;  in sdhci_send_tuning()
2860 	host->tuning_done = 0;  in sdhci_send_tuning()
2862 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_send_tuning()
2865 	wait_event_timeout(host->buf_ready_int, (host->tuning_done == 1),  in sdhci_send_tuning()
2871 int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)  in __sdhci_execute_tuning()
2873 	int i;  in __sdhci_execute_tuning()
2879 	for (i = 0; i < host->tuning_loop_count; i++) {  in __sdhci_execute_tuning()
2884 		if (!host->tuning_done) {  in __sdhci_execute_tuning()
2886 				 mmc_hostname(host->mmc));  in __sdhci_execute_tuning()
2888 			return -ETIMEDOUT;  in __sdhci_execute_tuning()
2891 		/* Spec does not require a delay between tuning cycles */  in __sdhci_execute_tuning()
2892 		if (host->tuning_delay > 0)  in __sdhci_execute_tuning()
2893 			mdelay(host->tuning_delay);  in __sdhci_execute_tuning()
2905 		mmc_hostname(host->mmc));  in __sdhci_execute_tuning()
2907 	return -EAGAIN;  in __sdhci_execute_tuning()
2911 int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)  in sdhci_execute_tuning()
2914 	int err = 0;  in sdhci_execute_tuning()
2915 	unsigned int tuning_count = 0;  in sdhci_execute_tuning()
2918 	hs400_tuning = host->flags & SDHCI_HS400_TUNING;  in sdhci_execute_tuning()
2920 	if (host->tuning_mode == SDHCI_TUNING_MODE_1)  in sdhci_execute_tuning()
2921 		tuning_count = host->tuning_count;  in sdhci_execute_tuning()
2927 	 * If the Host Controller supports the HS200 mode then the  in sdhci_execute_tuning()
2930 	switch (host->timing) {  in sdhci_execute_tuning()
2931 	/* HS400 tuning is done in HS200 mode */  in sdhci_execute_tuning()
2933 		err = -EINVAL;  in sdhci_execute_tuning()
2938 		 * Periodic re-tuning for HS400 is not expected to be needed, so  in sdhci_execute_tuning()
2950 		if (host->flags & SDHCI_SDR50_NEEDS_TUNING)  in sdhci_execute_tuning()
2958 	if (host->ops->platform_execute_tuning) {  in sdhci_execute_tuning()
2959 		err = host->ops->platform_execute_tuning(host, opcode);  in sdhci_execute_tuning()
2963 	mmc->retune_period = tuning_count;  in sdhci_execute_tuning()
2965 	if (host->tuning_delay < 0)  in sdhci_execute_tuning()
2966 		host->tuning_delay = opcode == MMC_SEND_TUNING_BLOCK;  in sdhci_execute_tuning()
2970 	host->tuning_err = __sdhci_execute_tuning(host, opcode);  in sdhci_execute_tuning()
2974 	host->flags &= ~SDHCI_HS400_TUNING;  in sdhci_execute_tuning()
2983 	if (host->version < SDHCI_SPEC_300)  in sdhci_enable_preset_value()
2990 	if (host->preset_enabled != enable) {  in sdhci_enable_preset_value()
3001 			host->flags |= SDHCI_PV_ENABLED;  in sdhci_enable_preset_value()
3003 			host->flags &= ~SDHCI_PV_ENABLED;  in sdhci_enable_preset_value()
3005 		host->preset_enabled = enable;  in sdhci_enable_preset_value()
3011 				int err)  in sdhci_post_req()
3013 	struct mmc_data *data = mrq->data;  in sdhci_post_req()
3015 	if (data->host_cookie != COOKIE_UNMAPPED)  in sdhci_post_req()
3016 		dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len,  in sdhci_post_req()
3019 	data->host_cookie = COOKIE_UNMAPPED;  in sdhci_post_req()
3026 	mrq->data->host_cookie = COOKIE_UNMAPPED;  in sdhci_pre_req()
3029 	 * No pre-mapping in the pre hook if we're using the bounce buffer,  in sdhci_pre_req()
3033 	if (host->flags & SDHCI_REQ_USE_DMA && !host->bounce_buffer)  in sdhci_pre_req()
3034 		sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED);  in sdhci_pre_req()
3037 static void sdhci_error_out_mrqs(struct sdhci_host *host, int err)  in sdhci_error_out_mrqs()
3039 	if (host->data_cmd) {  in sdhci_error_out_mrqs()
3040 		host->data_cmd->error = err;  in sdhci_error_out_mrqs()
3041 		sdhci_finish_mrq(host, host->data_cmd->mrq);  in sdhci_error_out_mrqs()
3044 	if (host->cmd) {  in sdhci_error_out_mrqs()
3045 		host->cmd->error = err;  in sdhci_error_out_mrqs()
3046 		sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_error_out_mrqs()
3054 	int present;  in sdhci_card_event()
3057 	if (host->ops->card_event)  in sdhci_card_event()
3058 		host->ops->card_event(host);  in sdhci_card_event()
3060 	present = mmc->ops->get_cd(mmc);  in sdhci_card_event()
3062 	spin_lock_irqsave(&host->lock, flags);  in sdhci_card_event()
3073 		sdhci_error_out_mrqs(host, -ENOMEDIUM);  in sdhci_card_event()
3076 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_card_event()
3104 	struct mmc_data *data = mrq->data;  in sdhci_request_done_dma()
3106 	if (data && data->host_cookie == COOKIE_MAPPED) {  in sdhci_request_done_dma()
3107 		if (host->bounce_buffer) {  in sdhci_request_done_dma()
3113 				unsigned int length = data->bytes_xfered;  in sdhci_request_done_dma()
3115 				if (length > host->bounce_buffer_size) {  in sdhci_request_done_dma()
3117 					       mmc_hostname(host->mmc),  in sdhci_request_done_dma()
3118 					       host->bounce_buffer_size,  in sdhci_request_done_dma()
3119 					       data->bytes_xfered);  in sdhci_request_done_dma()
3121 					length = host->bounce_buffer_size;  in sdhci_request_done_dma()
3123 				dma_sync_single_for_cpu(mmc_dev(host->mmc),  in sdhci_request_done_dma()
3124 							host->bounce_addr,  in sdhci_request_done_dma()
3125 							host->bounce_buffer_size,  in sdhci_request_done_dma()
3127 				sg_copy_from_buffer(data->sg,  in sdhci_request_done_dma()
3128 						    data->sg_len,  in sdhci_request_done_dma()
3129 						    host->bounce_buffer,  in sdhci_request_done_dma()
3133 				dma_sync_single_for_cpu(mmc_dev(host->mmc),  in sdhci_request_done_dma()
3134 							host->bounce_addr,  in sdhci_request_done_dma()
3135 							host->bounce_buffer_size,  in sdhci_request_done_dma()
3140 			dma_unmap_sg(mmc_dev(host->mmc), data->sg,  in sdhci_request_done_dma()
3141 				     data->sg_len,  in sdhci_request_done_dma()
3144 		data->host_cookie = COOKIE_UNMAPPED;  in sdhci_request_done_dma()
3153 	int i;  in sdhci_request_done()
3155 	spin_lock_irqsave(&host->lock, flags);  in sdhci_request_done()
3158 		mrq = host->mrqs_done[i];  in sdhci_request_done()
3164 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3176 		 * also be in mrqs_done, otherwise host->cmd and host->data_cmd  in sdhci_request_done()
3179 		if (host->cmd || host->data_cmd) {  in sdhci_request_done()
3180 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3185 		if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)  in sdhci_request_done()
3187 			host->ops->set_clock(host, host->clock);  in sdhci_request_done()
3191 		host->pending_reset = false;  in sdhci_request_done()
3199 	if (host->flags & SDHCI_REQ_USE_DMA) {  in sdhci_request_done()
3200 		struct mmc_data *data = mrq->data;  in sdhci_request_done()
3202 		if (host->use_external_dma && data &&  in sdhci_request_done()
3203 		    (mrq->cmd->error || data->error)) {  in sdhci_request_done()
3206 			host->mrqs_done[i] = NULL;  in sdhci_request_done()
3207 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3209 			spin_lock_irqsave(&host->lock, flags);  in sdhci_request_done()
3216 	host->mrqs_done[i] = NULL;  in sdhci_request_done()
3218 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_request_done()
3220 	if (host->ops->request_done)  in sdhci_request_done()
3221 		host->ops->request_done(host, mrq);  in sdhci_request_done()
3223 		mmc_request_done(host->mmc, mrq);  in sdhci_request_done()
3245 	spin_lock_irqsave(&host->lock, flags);  in sdhci_timeout_timer()
3247 	if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {  in sdhci_timeout_timer()
3248 		pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",  in sdhci_timeout_timer()
3249 		       mmc_hostname(host->mmc));  in sdhci_timeout_timer()
3253 		host->cmd->error = -ETIMEDOUT;  in sdhci_timeout_timer()
3254 		sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_timeout_timer()
3257 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_timeout_timer()
3267 	spin_lock_irqsave(&host->lock, flags);  in sdhci_timeout_data_timer()
3269 	if (host->data || host->data_cmd ||  in sdhci_timeout_data_timer()
3270 	    (host->cmd && sdhci_data_line_cmd(host->cmd))) {  in sdhci_timeout_data_timer()
3272 		       mmc_hostname(host->mmc));  in sdhci_timeout_data_timer()
3276 		if (host->data) {  in sdhci_timeout_data_timer()
3277 			host->data->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3279 			queue_work(host->complete_wq, &host->complete_work);  in sdhci_timeout_data_timer()
3280 		} else if (host->data_cmd) {  in sdhci_timeout_data_timer()
3281 			host->data_cmd->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3282 			sdhci_finish_mrq(host, host->data_cmd->mrq);  in sdhci_timeout_data_timer()
3284 			host->cmd->error = -ETIMEDOUT;  in sdhci_timeout_data_timer()
3285 			sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_timeout_data_timer()
3289 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_timeout_data_timer()
3300 	/* Handle auto-CMD12 error */  in sdhci_cmd_irq()
3301 	if (intmask & SDHCI_INT_AUTO_CMD_ERR && host->data_cmd) {  in sdhci_cmd_irq()
3302 		struct mmc_request *mrq = host->data_cmd->mrq;  in sdhci_cmd_irq()
3304 		int data_err_bit = (auto_cmd_status & SDHCI_AUTO_CMD_TIMEOUT) ?  in sdhci_cmd_irq()
3308 		/* Treat auto-CMD12 error the same as data error */  in sdhci_cmd_irq()
3309 		if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) {  in sdhci_cmd_irq()
3315 	if (!host->cmd) {  in sdhci_cmd_irq()
3317 		 * SDHCI recovers from errors by resetting the cmd and data  in sdhci_cmd_irq()
3321 		if (host->pending_reset)  in sdhci_cmd_irq()
3324 		       mmc_hostname(host->mmc), (unsigned)intmask);  in sdhci_cmd_irq()
3333 			host->cmd->error = -ETIMEDOUT;  in sdhci_cmd_irq()
3336 			host->cmd->error = -EILSEQ;  in sdhci_cmd_irq()
3337 			if (!mmc_op_tuning(host->cmd->opcode))  in sdhci_cmd_irq()
3341 		if (host->cmd->data &&  in sdhci_cmd_irq()
3344 			host->cmd = NULL;  in sdhci_cmd_irq()
3349 		__sdhci_finish_mrq(host, host->cmd->mrq);  in sdhci_cmd_irq()
3353 	/* Handle auto-CMD23 error */  in sdhci_cmd_irq()
3355 		struct mmc_request *mrq = host->cmd->mrq;  in sdhci_cmd_irq()
3357 		int err = (auto_cmd_status & SDHCI_AUTO_CMD_TIMEOUT) ?  in sdhci_cmd_irq()
3358 			  -ETIMEDOUT :  in sdhci_cmd_irq()
3359 			  -EILSEQ;  in sdhci_cmd_irq()
3364 			mrq->sbc->error = err;  in sdhci_cmd_irq()
3376 	void *desc = host->adma_table;  in sdhci_adma_show_error()
3377 	dma_addr_t dma = host->adma_addr;  in sdhci_adma_show_error()
3384 		if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_adma_show_error()
3387 			    le32_to_cpu(dma_desc->addr_hi),  in sdhci_adma_show_error()
3388 			    le32_to_cpu(dma_desc->addr_lo),  in sdhci_adma_show_error()
3389 			    le16_to_cpu(dma_desc->len),  in sdhci_adma_show_error()
3390 			    le16_to_cpu(dma_desc->cmd));  in sdhci_adma_show_error()
3394 			    le32_to_cpu(dma_desc->addr_lo),  in sdhci_adma_show_error()
3395 			    le16_to_cpu(dma_desc->len),  in sdhci_adma_show_error()
3396 			    le16_to_cpu(dma_desc->cmd));  in sdhci_adma_show_error()
3398 		desc += host->desc_sz;  in sdhci_adma_show_error()
3399 		dma += host->desc_sz;  in sdhci_adma_show_error()
3401 		if (dma_desc->cmd & cpu_to_le16(ADMA2_END))  in sdhci_adma_show_error()
3415 	if (intmask & SDHCI_INT_DATA_AVAIL && !host->data) {  in sdhci_data_irq()
3417 			host->tuning_done = 1;  in sdhci_data_irq()
3418 			wake_up(&host->buf_ready_int);  in sdhci_data_irq()
3423 	if (!host->data) {  in sdhci_data_irq()
3424 		struct mmc_command *data_cmd = host->data_cmd;  in sdhci_data_irq()
3431 		if (data_cmd && (data_cmd->flags & MMC_RSP_BUSY)) {  in sdhci_data_irq()
3433 				host->data_cmd = NULL;  in sdhci_data_irq()
3434 				data_cmd->error = -ETIMEDOUT;  in sdhci_data_irq()
3436 				__sdhci_finish_mrq(host, data_cmd->mrq);  in sdhci_data_irq()
3440 				host->data_cmd = NULL;  in sdhci_data_irq()
3442 				 * Some cards handle busy-end interrupt  in sdhci_data_irq()
3446 				if (host->cmd == data_cmd)  in sdhci_data_irq()
3449 				__sdhci_finish_mrq(host, data_cmd->mrq);  in sdhci_data_irq()
3455 		 * SDHCI recovers from errors by resetting the cmd and data  in sdhci_data_irq()
3459 		if (host->pending_reset)  in sdhci_data_irq()
3463 		       mmc_hostname(host->mmc), (unsigned)intmask);  in sdhci_data_irq()
3471 		host->data->error = -ETIMEDOUT;  in sdhci_data_irq()
3474 		host->data->error = -EILSEQ;  in sdhci_data_irq()
3480 		host->data->error = -EILSEQ;  in sdhci_data_irq()
3490 		pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc),  in sdhci_data_irq()
3494 		host->data->error = -EIO;  in sdhci_data_irq()
3495 		if (host->ops->adma_workaround)  in sdhci_data_irq()
3496 			host->ops->adma_workaround(host, intmask);  in sdhci_data_irq()
3499 	if (host->data->error)  in sdhci_data_irq()
3518 			dmanow = dmastart + host->data->bytes_xfered;  in sdhci_data_irq()
3523 				~((dma_addr_t)SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) +  in sdhci_data_irq()
3525 			host->data->bytes_xfered = dmanow - dmastart;  in sdhci_data_irq()
3527 			    &dmastart, host->data->bytes_xfered, &dmanow);  in sdhci_data_irq()
3532 			if (host->cmd == host->data_cmd) {  in sdhci_data_irq()
3538 				host->data_early = 1;  in sdhci_data_irq()
3549 	struct mmc_data *data = mrq->data;  in sdhci_defer_done()
3551 	return host->pending_reset || host->always_defer_done ||  in sdhci_defer_done()
3552 	       ((host->flags & SDHCI_REQ_USE_DMA) && data &&  in sdhci_defer_done()
3553 		data->host_cookie == COOKIE_MAPPED);  in sdhci_defer_done()
3556 static irqreturn_t sdhci_irq(int irq, void *dev_id)  in sdhci_irq()
3562 	int max_loops = 16;  in sdhci_irq()
3563 	int i;  in sdhci_irq()
3565 	spin_lock(&host->lock);  in sdhci_irq()
3567 	if (host->runtime_suspended) {  in sdhci_irq()
3568 		spin_unlock(&host->lock);  in sdhci_irq()
3581 		if (host->ops->irq) {  in sdhci_irq()
3582 			intmask = host->ops->irq(host, intmask);  in sdhci_irq()
3607 			host->ier &= ~(SDHCI_INT_CARD_INSERT |  in sdhci_irq()
3609 			host->ier |= present ? SDHCI_INT_CARD_REMOVE :  in sdhci_irq()
3611 			sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_irq()
3612 			sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_irq()
3617 			host->thread_isr |= intmask & (SDHCI_INT_CARD_INSERT |  in sdhci_irq()
3630 				mmc_hostname(host->mmc));  in sdhci_irq()
3633 			mmc_retune_needed(host->mmc);  in sdhci_irq()
3636 		    (host->ier & SDHCI_INT_CARD_INT)) {  in sdhci_irq()
3638 			sdio_signal_irq(host->mmc);  in sdhci_irq()
3655 	} while (intmask && --max_loops);  in sdhci_irq()
3659 		struct mmc_request *mrq = host->mrqs_done[i];  in sdhci_irq()
3668 			host->mrqs_done[i] = NULL;  in sdhci_irq()
3672 	if (host->deferred_cmd)  in sdhci_irq()
3675 	spin_unlock(&host->lock);  in sdhci_irq()
3682 		if (host->ops->request_done)  in sdhci_irq()
3683 			host->ops->request_done(host, mrqs_done[i]);  in sdhci_irq()
3685 			mmc_request_done(host->mmc, mrqs_done[i]);  in sdhci_irq()
3690 			   mmc_hostname(host->mmc), unexpected);  in sdhci_irq()
3698 irqreturn_t sdhci_thread_irq(int irq, void *dev_id)  in sdhci_thread_irq()
3701 	struct mmc_command *cmd;  in sdhci_thread_irq()  local
3708 	spin_lock_irqsave(&host->lock, flags);  in sdhci_thread_irq()
3710 	isr = host->thread_isr;  in sdhci_thread_irq()
3711 	host->thread_isr = 0;  in sdhci_thread_irq()
3713 	cmd = host->deferred_cmd;  in sdhci_thread_irq()
3714 	if (cmd && !sdhci_send_command_retry(host, cmd, flags))  in sdhci_thread_irq()
3715 		sdhci_finish_mrq(host, cmd->mrq);  in sdhci_thread_irq()
3717 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_thread_irq()
3720 		struct mmc_host *mmc = host->mmc;  in sdhci_thread_irq()
3722 		mmc->ops->card_event(mmc);  in sdhci_thread_irq()
3740 	return mmc_card_is_removable(host->mmc) &&  in sdhci_cd_irq_can_wakeup()
3741 	       !(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&  in sdhci_cd_irq_can_wakeup()
3742 	       !mmc_can_gpio_cd(host->mmc);  in sdhci_cd_irq_can_wakeup()
3747  * the Interrupt Status Enable register too. See 'Table 1-6: Wakeup Signal
3766 	if (mmc_card_wake_sdio_irq(host->mmc)) {  in sdhci_enable_irq_wakeups()
3781 	host->irq_wake_enabled = !enable_irq_wake(host->irq);  in sdhci_enable_irq_wakeups()
3783 	return host->irq_wake_enabled;  in sdhci_enable_irq_wakeups()
3796 	disable_irq_wake(host->irq);  in sdhci_disable_irq_wakeups()
3798 	host->irq_wake_enabled = false;  in sdhci_disable_irq_wakeups()
3801 int sdhci_suspend_host(struct sdhci_host *host)  in sdhci_suspend_host()
3805 	mmc_retune_timer_stop(host->mmc);  in sdhci_suspend_host()
3807 	if (!device_may_wakeup(mmc_dev(host->mmc)) ||  in sdhci_suspend_host()
3809 		host->ier = 0;  in sdhci_suspend_host()
3812 		free_irq(host->irq, host);  in sdhci_suspend_host()
3820 int sdhci_resume_host(struct sdhci_host *host)  in sdhci_resume_host()
3822 	struct mmc_host *mmc = host->mmc;  in sdhci_resume_host()
3823 	int ret = 0;  in sdhci_resume_host()
3825 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_resume_host()
3826 		if (host->ops->enable_dma)  in sdhci_resume_host()
3827 			host->ops->enable_dma(host);  in sdhci_resume_host()
3830 	if ((mmc->pm_flags & MMC_PM_KEEP_POWER) &&  in sdhci_resume_host()
3831 	    (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) {  in sdhci_resume_host()
3834 		host->pwr = 0;  in sdhci_resume_host()
3835 		host->clock = 0;  in sdhci_resume_host()
3836 		host->reinit_uhs = true;  in sdhci_resume_host()
3837 		mmc->ops->set_ios(mmc, &mmc->ios);  in sdhci_resume_host()
3839 		sdhci_init(host, (mmc->pm_flags & MMC_PM_KEEP_POWER));  in sdhci_resume_host()
3842 	if (host->irq_wake_enabled) {  in sdhci_resume_host()
3845 		ret = request_threaded_irq(host->irq, sdhci_irq,  in sdhci_resume_host()
3859 int sdhci_runtime_suspend_host(struct sdhci_host *host)  in sdhci_runtime_suspend_host()
3863 	mmc_retune_timer_stop(host->mmc);  in sdhci_runtime_suspend_host()
3865 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_suspend_host()
3866 	host->ier &= SDHCI_INT_CARD_INT;  in sdhci_runtime_suspend_host()
3867 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_runtime_suspend_host()
3868 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_runtime_suspend_host()
3869 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_suspend_host()
3871 	synchronize_hardirq(host->irq);  in sdhci_runtime_suspend_host()
3873 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_suspend_host()
3874 	host->runtime_suspended = true;  in sdhci_runtime_suspend_host()
3875 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_suspend_host()
3881 int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset)  in sdhci_runtime_resume_host()
3883 	struct mmc_host *mmc = host->mmc;  in sdhci_runtime_resume_host()
3885 	int host_flags = host->flags;  in sdhci_runtime_resume_host()
3888 		if (host->ops->enable_dma)  in sdhci_runtime_resume_host()
3889 			host->ops->enable_dma(host);  in sdhci_runtime_resume_host()
3894 	if (mmc->ios.power_mode != MMC_POWER_UNDEFINED &&  in sdhci_runtime_resume_host()
3895 	    mmc->ios.power_mode != MMC_POWER_OFF) {  in sdhci_runtime_resume_host()
3896 		/* Force clock and power re-program */  in sdhci_runtime_resume_host()
3897 		host->pwr = 0;  in sdhci_runtime_resume_host()
3898 		host->clock = 0;  in sdhci_runtime_resume_host()
3899 		host->reinit_uhs = true;  in sdhci_runtime_resume_host()
3900 		mmc->ops->start_signal_voltage_switch(mmc, &mmc->ios);  in sdhci_runtime_resume_host()
3901 		mmc->ops->set_ios(mmc, &mmc->ios);  in sdhci_runtime_resume_host()
3904 		    !(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {  in sdhci_runtime_resume_host()
3905 			spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_resume_host()
3907 			spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_resume_host()
3910 		if ((mmc->caps2 & MMC_CAP2_HS400_ES) &&  in sdhci_runtime_resume_host()
3911 		    mmc->ops->hs400_enhanced_strobe)  in sdhci_runtime_resume_host()
3912 			mmc->ops->hs400_enhanced_strobe(mmc, &mmc->ios);  in sdhci_runtime_resume_host()
3915 	spin_lock_irqsave(&host->lock, flags);  in sdhci_runtime_resume_host()
3917 	host->runtime_suspended = false;  in sdhci_runtime_resume_host()
3926 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_runtime_resume_host()
3946 	spin_lock_irqsave(&host->lock, flags);  in sdhci_cqe_enable()
3953 	 * for cmd queuing to fetch both command and transfer descriptors.  in sdhci_cqe_enable()
3955 	if (host->v4_mode && (host->caps1 & SDHCI_CAN_DO_ADMA3))  in sdhci_cqe_enable()
3957 	else if (host->flags & SDHCI_USE_64_BIT_DMA)  in sdhci_cqe_enable()
3963 	sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, 512),  in sdhci_cqe_enable()
3969 	host->ier = host->cqe_ier;  in sdhci_cqe_enable()
3971 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);  in sdhci_cqe_enable()
3972 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);  in sdhci_cqe_enable()
3974 	host->cqe_on = true;  in sdhci_cqe_enable()
3977 		 mmc_hostname(mmc), host->ier,  in sdhci_cqe_enable()
3980 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_cqe_enable()
3989 	spin_lock_irqsave(&host->lock, flags);  in sdhci_cqe_disable()
3993 	host->cqe_on = false;  in sdhci_cqe_disable()
3999 		 mmc_hostname(mmc), host->ier,  in sdhci_cqe_disable()
4002 	spin_unlock_irqrestore(&host->lock, flags);  in sdhci_cqe_disable()
4006 bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,  in sdhci_cqe_irq()
4007 		   int *data_error)  in sdhci_cqe_irq()
4011 	if (!host->cqe_on)  in sdhci_cqe_irq()
4015 		*cmd_error = -EILSEQ;  in sdhci_cqe_irq()
4019 		*cmd_error = -ETIMEDOUT;  in sdhci_cqe_irq()
4025 		*data_error = -EILSEQ;  in sdhci_cqe_irq()
4029 		*data_error = -ETIMEDOUT;  in sdhci_cqe_irq()
4032 		*data_error = -EIO;  in sdhci_cqe_irq()
4038 	mask = intmask & host->cqe_ier;  in sdhci_cqe_irq()
4043 		       mmc_hostname(host->mmc));  in sdhci_cqe_irq()
4045 	intmask &= ~(host->cqe_ier | SDHCI_INT_ERROR);  in sdhci_cqe_irq()
4049 		       mmc_hostname(host->mmc), intmask);  in sdhci_cqe_irq()
4074 		return ERR_PTR(-ENOMEM);  in sdhci_alloc_host()
4077 	host->mmc = mmc;  in sdhci_alloc_host()
4078 	host->mmc_host_ops = sdhci_ops;  in sdhci_alloc_host()
4079 	mmc->ops = &host->mmc_host_ops;  in sdhci_alloc_host()
4081 	host->flags = SDHCI_SIGNALING_330;  in sdhci_alloc_host()
4083 	host->cqe_ier     = SDHCI_CQE_INT_MASK;  in sdhci_alloc_host()
4084 	host->cqe_err_ier = SDHCI_CQE_INT_ERR_MASK;  in sdhci_alloc_host()
4086 	host->tuning_delay = -1;  in sdhci_alloc_host()
4087 	host->tuning_loop_count = MAX_TUNING_LOOP;  in sdhci_alloc_host()
4089 	host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG;  in sdhci_alloc_host()
4096 	host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1;  in sdhci_alloc_host()
4097 	host->max_adma = 65536;  in sdhci_alloc_host()
4099 	host->max_timeout_count = 0xE;  in sdhci_alloc_host()
4101 	host->complete_work_fn = sdhci_complete_work;  in sdhci_alloc_host()
4102 	host->thread_irq_fn    = sdhci_thread_irq;  in sdhci_alloc_host()
4109 static int sdhci_set_dma_mask(struct sdhci_host *host)  in sdhci_set_dma_mask()
4111 	struct mmc_host *mmc = host->mmc;  in sdhci_set_dma_mask()
4113 	int ret = -EINVAL;  in sdhci_set_dma_mask()
4115 	if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA)  in sdhci_set_dma_mask()
4116 		host->flags &= ~SDHCI_USE_64_BIT_DMA;  in sdhci_set_dma_mask()
4118 	/* Try 64-bit mask if hardware is capable  of it */  in sdhci_set_dma_mask()
4119 	if (host->flags & SDHCI_USE_64_BIT_DMA) {  in sdhci_set_dma_mask()
4122 			pr_warn("%s: Failed to set 64-bit DMA mask.\n",  in sdhci_set_dma_mask()
4124 			host->flags &= ~SDHCI_USE_64_BIT_DMA;  in sdhci_set_dma_mask()
4128 	/* 32-bit mask as default & fallback */  in sdhci_set_dma_mask()
4132 			pr_warn("%s: Failed to set 32-bit DMA mask.\n",  in sdhci_set_dma_mask()
4146 	if (host->read_caps)  in __sdhci_read_caps()
4149 	host->read_caps = true;  in __sdhci_read_caps()
4152 		host->quirks = debug_quirks;  in __sdhci_read_caps()
4155 		host->quirks2 = debug_quirks2;  in __sdhci_read_caps()
4159 	if (host->v4_mode)  in __sdhci_read_caps()
4162 	device_property_read_u64(mmc_dev(host->mmc),  in __sdhci_read_caps()
4163 				 "sdhci-caps-mask", &dt_caps_mask);  in __sdhci_read_caps()
4164 	device_property_read_u64(mmc_dev(host->mmc),  in __sdhci_read_caps()
4165 				 "sdhci-caps", &dt_caps);  in __sdhci_read_caps()
4168 	host->version = (v & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT;  in __sdhci_read_caps()
4171 		host->caps = *caps;  in __sdhci_read_caps()
4173 		host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);  in __sdhci_read_caps()
4174 		host->caps &= ~lower_32_bits(dt_caps_mask);  in __sdhci_read_caps()
4175 		host->caps |= lower_32_bits(dt_caps);  in __sdhci_read_caps()
4178 	if (host->version < SDHCI_SPEC_300)  in __sdhci_read_caps()
4182 		host->caps1 = *caps1;  in __sdhci_read_caps()
4184 		host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);  in __sdhci_read_caps()
4185 		host->caps1 &= ~upper_32_bits(dt_caps_mask);  in __sdhci_read_caps()
4186 		host->caps1 |= upper_32_bits(dt_caps);  in __sdhci_read_caps()
4193 	struct mmc_host *mmc = host->mmc;  in sdhci_allocate_bounce_buffer()
4194 	unsigned int max_blocks;  in sdhci_allocate_bounce_buffer()
4195 	unsigned int bounce_size;  in sdhci_allocate_bounce_buffer()
4196 	int ret;  in sdhci_allocate_bounce_buffer()
4209 	if (mmc->max_req_size < bounce_size)  in sdhci_allocate_bounce_buffer()
4210 		bounce_size = mmc->max_req_size;  in sdhci_allocate_bounce_buffer()
4218 	host->bounce_buffer = devm_kmalloc(mmc_dev(mmc),  in sdhci_allocate_bounce_buffer()
4221 	if (!host->bounce_buffer) {  in sdhci_allocate_bounce_buffer()
4227 		 * mmc->max_segs == 1.  in sdhci_allocate_bounce_buffer()
4232 	host->bounce_addr = dma_map_single(mmc_dev(mmc),  in sdhci_allocate_bounce_buffer()
4233 					   host->bounce_buffer,  in sdhci_allocate_bounce_buffer()
4236 	ret = dma_mapping_error(mmc_dev(mmc), host->bounce_addr);  in sdhci_allocate_bounce_buffer()
4238 		devm_kfree(mmc_dev(mmc), host->bounce_buffer);  in sdhci_allocate_bounce_buffer()
4239 		host->bounce_buffer = NULL;  in sdhci_allocate_bounce_buffer()
4244 	host->bounce_buffer_size = bounce_size;  in sdhci_allocate_bounce_buffer()
4247 	mmc->max_segs = max_blocks;  in sdhci_allocate_bounce_buffer()
4248 	mmc->max_seg_size = bounce_size;  in sdhci_allocate_bounce_buffer()
4249 	mmc->max_req_size = bounce_size;  in sdhci_allocate_bounce_buffer()
4259 	 * version 4.10 in Capabilities Register is used as 64-bit System  in sdhci_can_64bit_dma()
4262 	if (host->version >= SDHCI_SPEC_410 && host->v4_mode)  in sdhci_can_64bit_dma()
4263 		return host->caps & SDHCI_CAN_64BIT_V4;  in sdhci_can_64bit_dma()
4265 	return host->caps & SDHCI_CAN_64BIT;  in sdhci_can_64bit_dma()
4268 int sdhci_setup_host(struct sdhci_host *host)  in sdhci_setup_host()
4272 	unsigned int ocr_avail;  in sdhci_setup_host()
4273 	unsigned int override_timeout_clk;  in sdhci_setup_host()
4275 	int ret = 0;  in sdhci_setup_host()
4280 		return -EINVAL;  in sdhci_setup_host()
4282 	mmc = host->mmc;  in sdhci_setup_host()
4290 	if (!mmc->supply.vqmmc) {  in sdhci_setup_host()
4306 	override_timeout_clk = host->timeout_clk;  in sdhci_setup_host()
4308 	if (host->version > SDHCI_SPEC_420) {  in sdhci_setup_host()
4310 		       mmc_hostname(mmc), host->version);  in sdhci_setup_host()
4313 	if (host->quirks & SDHCI_QUIRK_FORCE_DMA)  in sdhci_setup_host()
4314 		host->flags |= SDHCI_USE_SDMA;  in sdhci_setup_host()
4315 	else if (!(host->caps & SDHCI_CAN_DO_SDMA))  in sdhci_setup_host()
4318 		host->flags |= SDHCI_USE_SDMA;  in sdhci_setup_host()
4320 	if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) &&  in sdhci_setup_host()
4321 		(host->flags & SDHCI_USE_SDMA)) {  in sdhci_setup_host()
4323 		host->flags &= ~SDHCI_USE_SDMA;  in sdhci_setup_host()
4326 	if ((host->version >= SDHCI_SPEC_200) &&  in sdhci_setup_host()
4327 		(host->caps & SDHCI_CAN_DO_ADMA2))  in sdhci_setup_host()
4328 		host->flags |= SDHCI_USE_ADMA;  in sdhci_setup_host()
4330 	if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) &&  in sdhci_setup_host()
4331 		(host->flags & SDHCI_USE_ADMA)) {  in sdhci_setup_host()
4333 		host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4337 		host->flags |= SDHCI_USE_64_BIT_DMA;  in sdhci_setup_host()
4339 	if (host->use_external_dma) {  in sdhci_setup_host()
4341 		if (ret == -EPROBE_DEFER)  in sdhci_setup_host()
4351 			host->flags &= ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA);  in sdhci_setup_host()
4354 	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {  in sdhci_setup_host()
4355 		if (host->ops->set_dma_mask)  in sdhci_setup_host()
4356 			ret = host->ops->set_dma_mask(host);  in sdhci_setup_host()
4360 		if (!ret && host->ops->enable_dma)  in sdhci_setup_host()
4361 			ret = host->ops->enable_dma(host);  in sdhci_setup_host()
4364 			pr_warn("%s: No suitable DMA available - falling back to PIO\n",  in sdhci_setup_host()
4366 			host->flags &= ~(SDHCI_USE_SDMA | SDHCI_USE_ADMA);  in sdhci_setup_host()
4372 	/* SDMA does not support 64-bit DMA if v4 mode not set */  in sdhci_setup_host()
4373 	if ((host->flags & SDHCI_USE_64_BIT_DMA) && !host->v4_mode)  in sdhci_setup_host()
4374 		host->flags &= ~SDHCI_USE_SDMA;  in sdhci_setup_host()
4376 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4380 		if (!(host->flags & SDHCI_USE_64_BIT_DMA))  in sdhci_setup_host()
4381 			host->alloc_desc_sz = SDHCI_ADMA2_32_DESC_SZ;  in sdhci_setup_host()
4382 		else if (!host->alloc_desc_sz)  in sdhci_setup_host()
4383 			host->alloc_desc_sz = SDHCI_ADMA2_64_DESC_SZ(host);  in sdhci_setup_host()
4385 		host->desc_sz = host->alloc_desc_sz;  in sdhci_setup_host()
4386 		host->adma_table_sz = host->adma_table_cnt * host->desc_sz;  in sdhci_setup_host()
4388 		host->align_buffer_sz = SDHCI_MAX_SEGS * SDHCI_ADMA2_ALIGN;  in sdhci_setup_host()
4390 		 * Use zalloc to zero the reserved high 32-bits of 128-bit  in sdhci_setup_host()
4394 					 host->align_buffer_sz + host->adma_table_sz,  in sdhci_setup_host()
4397 			pr_warn("%s: Unable to allocate ADMA buffers - falling back to standard DMA\n",  in sdhci_setup_host()
4399 			host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4400 		} else if ((dma + host->align_buffer_sz) &  in sdhci_setup_host()
4401 			   (SDHCI_ADMA2_DESC_ALIGN - 1)) {  in sdhci_setup_host()
4404 			host->flags &= ~SDHCI_USE_ADMA;  in sdhci_setup_host()
4405 			dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_setup_host()
4406 					  host->adma_table_sz, buf, dma);  in sdhci_setup_host()
4408 			host->align_buffer = buf;  in sdhci_setup_host()
4409 			host->align_addr = dma;  in sdhci_setup_host()
4411 			host->adma_table = buf + host->align_buffer_sz;  in sdhci_setup_host()
4412 			host->adma_addr = dma + host->align_buffer_sz;  in sdhci_setup_host()
4421 	if (!(host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) {  in sdhci_setup_host()
4422 		host->dma_mask = DMA_BIT_MASK(64);  in sdhci_setup_host()
4423 		mmc_dev(mmc)->dma_mask = &host->dma_mask;  in sdhci_setup_host()
4426 	if (host->version >= SDHCI_SPEC_300)  in sdhci_setup_host()
4427 		host->max_clk = FIELD_GET(SDHCI_CLOCK_V3_BASE_MASK, host->caps);  in sdhci_setup_host()
4429 		host->max_clk = FIELD_GET(SDHCI_CLOCK_BASE_MASK, host->caps);  in sdhci_setup_host()
4431 	host->max_clk *= 1000000;  in sdhci_setup_host()
4432 	if (host->max_clk == 0 || host->quirks &  in sdhci_setup_host()
4434 		if (!host->ops->get_max_clock) {  in sdhci_setup_host()
4437 			ret = -ENODEV;  in sdhci_setup_host()
4440 		host->max_clk = host->ops->get_max_clock(host);  in sdhci_setup_host()
4447 	host->clk_mul = FIELD_GET(SDHCI_CLOCK_MUL_MASK, host->caps1);  in sdhci_setup_host()
4455 	if (host->clk_mul)  in sdhci_setup_host()
4456 		host->clk_mul += 1;  in sdhci_setup_host()
4461 	max_clk = host->max_clk;  in sdhci_setup_host()
4463 	if (host->ops->get_min_clock)  in sdhci_setup_host()
4464 		mmc->f_min = host->ops->get_min_clock(host);  in sdhci_setup_host()
4465 	else if (host->version >= SDHCI_SPEC_300) {  in sdhci_setup_host()
4466 		if (host->clk_mul)  in sdhci_setup_host()
4467 			max_clk = host->max_clk * host->clk_mul;  in sdhci_setup_host()
4472 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;  in sdhci_setup_host()
4474 		mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;  in sdhci_setup_host()
4476 	if (!mmc->f_max || mmc->f_max > max_clk)  in sdhci_setup_host()
4477 		mmc->f_max = max_clk;  in sdhci_setup_host()
4479 	if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {  in sdhci_setup_host()
4480 		host->timeout_clk = FIELD_GET(SDHCI_TIMEOUT_CLK_MASK, host->caps);  in sdhci_setup_host()
4482 		if (host->caps & SDHCI_TIMEOUT_CLK_UNIT)  in sdhci_setup_host()
4483 			host->timeout_clk *= 1000;  in sdhci_setup_host()
4485 		if (host->timeout_clk == 0) {  in sdhci_setup_host()
4486 			if (!host->ops->get_timeout_clock) {  in sdhci_setup_host()
4489 				ret = -ENODEV;  in sdhci_setup_host()
4493 			host->timeout_clk =  in sdhci_setup_host()
4494 				DIV_ROUND_UP(host->ops->get_timeout_clock(host),  in sdhci_setup_host()
4499 			host->timeout_clk = override_timeout_clk;  in sdhci_setup_host()
4501 		mmc->max_busy_timeout = host->ops->get_max_timeout_count ?  in sdhci_setup_host()
4502 			host->ops->get_max_timeout_count(host) : 1 << 27;  in sdhci_setup_host()
4503 		mmc->max_busy_timeout /= host->timeout_clk;  in sdhci_setup_host()
4506 	if (host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT &&  in sdhci_setup_host()
4507 	    !host->ops->get_max_timeout_count)  in sdhci_setup_host()
4508 		mmc->max_busy_timeout = 0;  in sdhci_setup_host()
4510 	mmc->caps |= MMC_CAP_SDIO_IRQ | MMC_CAP_CMD23;  in sdhci_setup_host()
4511 	mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;  in sdhci_setup_host()
4513 	if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)  in sdhci_setup_host()
4514 		host->flags |= SDHCI_AUTO_CMD12;  in sdhci_setup_host()
4517 	 * For v3 mode, Auto-CMD23 stuff only works in ADMA or PIO.  in sdhci_setup_host()
4518 	 * For v4 mode, SDMA may use Auto-CMD23 as well.  in sdhci_setup_host()
4520 	if ((host->version >= SDHCI_SPEC_300) &&  in sdhci_setup_host()
4521 	    ((host->flags & SDHCI_USE_ADMA) ||  in sdhci_setup_host()
4522 	     !(host->flags & SDHCI_USE_SDMA) || host->v4_mode) &&  in sdhci_setup_host()
4523 	     !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) {  in sdhci_setup_host()
4524 		host->flags |= SDHCI_AUTO_CMD23;  in sdhci_setup_host()
4525 		DBG("Auto-CMD23 available\n");  in sdhci_setup_host()
4527 		DBG("Auto-CMD23 unavailable\n");  in sdhci_setup_host()
4531 	 * A controller may support 8-bit width, but the board itself  in sdhci_setup_host()
4533 	 * 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in  in sdhci_setup_host()
4535 	 * won't assume 8-bit width for hosts without that CAP.  in sdhci_setup_host()
4537 	if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))  in sdhci_setup_host()
4538 		mmc->caps |= MMC_CAP_4_BIT_DATA;  in sdhci_setup_host()
4540 	if (host->quirks2 & SDHCI_QUIRK2_HOST_NO_CMD23)  in sdhci_setup_host()
4541 		mmc->caps &= ~MMC_CAP_CMD23;  in sdhci_setup_host()
4543 	if (host->caps & SDHCI_CAN_DO_HISPD)  in sdhci_setup_host()
4544 		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;  in sdhci_setup_host()
4546 	if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&  in sdhci_setup_host()
4549 		mmc->caps |= MMC_CAP_NEEDS_POLL;  in sdhci_setup_host()
4551 	if (!IS_ERR(mmc->supply.vqmmc)) {  in sdhci_setup_host()
4553 			ret = regulator_enable(mmc->supply.vqmmc);  in sdhci_setup_host()
4554 			host->sdhci_core_to_disable_vqmmc = !ret;  in sdhci_setup_host()
4558 		if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 1700000,  in sdhci_setup_host()
4560 			host->caps1 &= ~(SDHCI_SUPPORT_SDR104 |  in sdhci_setup_host()
4565 		if (!regulator_is_supported_voltage(mmc->supply.vqmmc, 2700000,  in sdhci_setup_host()
4567 			host->flags &= ~SDHCI_SIGNALING_330;  in sdhci_setup_host()
4572 			mmc->supply.vqmmc = ERR_PTR(-EINVAL);  in sdhci_setup_host()
4577 	if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) {  in sdhci_setup_host()
4578 		host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |  in sdhci_setup_host()
4581 		 * The SDHCI controller in a SoC might support HS200/HS400  in sdhci_setup_host()
4582 		 * (indicated using mmc-hs200-1_8v/mmc-hs400-1_8v dt property),  in sdhci_setup_host()
4584 		 * connected to 1.8v then HS200/HS400 cannot be supported.  in sdhci_setup_host()
4585 		 * Disable HS200/HS400 if the board does not have 1.8v connected  in sdhci_setup_host()
4588 		mmc->caps2 &= ~(MMC_CAP2_HSX00_1_8V | MMC_CAP2_HS400_ES);  in sdhci_setup_host()
4589 		mmc->caps &= ~(MMC_CAP_1_8V_DDR | MMC_CAP_UHS);  in sdhci_setup_host()
4592 	/* Any UHS-I mode in caps implies SDR12 and SDR25 support. */  in sdhci_setup_host()
4593 	if (host->caps1 & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |  in sdhci_setup_host()
4595 		mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25;  in sdhci_setup_host()
4598 	if (host->caps1 & SDHCI_SUPPORT_SDR104) {  in sdhci_setup_host()
4599 		mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;  in sdhci_setup_host()
4601 		 * field can be promoted to support HS200.  in sdhci_setup_host()
4603 		if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200))  in sdhci_setup_host()
4604 			mmc->caps2 |= MMC_CAP2_HS200;  in sdhci_setup_host()
4605 	} else if (host->caps1 & SDHCI_SUPPORT_SDR50) {  in sdhci_setup_host()
4606 		mmc->caps |= MMC_CAP_UHS_SDR50;  in sdhci_setup_host()
4609 	if (host->quirks2 & SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 &&  in sdhci_setup_host()
4610 	    (host->caps1 & SDHCI_SUPPORT_HS400))  in sdhci_setup_host()
4611 		mmc->caps2 |= MMC_CAP2_HS400;  in sdhci_setup_host()
4613 	if ((mmc->caps2 & MMC_CAP2_HSX00_1_2V) &&  in sdhci_setup_host()
4614 	    (IS_ERR(mmc->supply.vqmmc) ||  in sdhci_setup_host()
4615 	     !regulator_is_supported_voltage(mmc->supply.vqmmc, 1100000,  in sdhci_setup_host()
4617 		mmc->caps2 &= ~MMC_CAP2_HSX00_1_2V;  in sdhci_setup_host()
4619 	if ((host->caps1 & SDHCI_SUPPORT_DDR50) &&  in sdhci_setup_host()
4620 	    !(host->quirks2 & SDHCI_QUIRK2_BROKEN_DDR50))  in sdhci_setup_host()
4621 		mmc->caps |= MMC_CAP_UHS_DDR50;  in sdhci_setup_host()
4624 	if (host->caps1 & SDHCI_USE_SDR50_TUNING)  in sdhci_setup_host()
4625 		host->flags |= SDHCI_SDR50_NEEDS_TUNING;  in sdhci_setup_host()
4628 	if (host->caps1 & SDHCI_DRIVER_TYPE_A)  in sdhci_setup_host()
4629 		mmc->caps |= MMC_CAP_DRIVER_TYPE_A;  in sdhci_setup_host()
4630 	if (host->caps1 & SDHCI_DRIVER_TYPE_C)  in sdhci_setup_host()
4631 		mmc->caps |= MMC_CAP_DRIVER_TYPE_C;  in sdhci_setup_host()
4632 	if (host->caps1 & SDHCI_DRIVER_TYPE_D)  in sdhci_setup_host()
4633 		mmc->caps |= MMC_CAP_DRIVER_TYPE_D;  in sdhci_setup_host()
4635 	/* Initial value for re-tuning timer count */  in sdhci_setup_host()
4636 	host->tuning_count = FIELD_GET(SDHCI_RETUNING_TIMER_COUNT_MASK,  in sdhci_setup_host()
4637 				       host->caps1);  in sdhci_setup_host()
4640 	 * In case Re-tuning Timer is not disabled, the actual value of  in sdhci_setup_host()
4641 	 * re-tuning timer will be 2 ^ (n - 1).  in sdhci_setup_host()
4643 	if (host->tuning_count)  in sdhci_setup_host()
4644 		host->tuning_count = 1 << (host->tuning_count - 1);  in sdhci_setup_host()
4646 	/* Re-tuning mode supported by the Host Controller */  in sdhci_setup_host()
4647 	host->tuning_mode = FIELD_GET(SDHCI_RETUNING_MODE_MASK, host->caps1);  in sdhci_setup_host()
4659 	if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) {  in sdhci_setup_host()
4660 		int curr = regulator_get_current_limit(mmc->supply.vmmc);  in sdhci_setup_host()
4675 	if (host->caps & SDHCI_CAN_VDD_330) {  in sdhci_setup_host()
4678 		mmc->max_current_330 = FIELD_GET(SDHCI_MAX_CURRENT_330_MASK,  in sdhci_setup_host()
4682 	if (host->caps & SDHCI_CAN_VDD_300) {  in sdhci_setup_host()
4685 		mmc->max_current_300 = FIELD_GET(SDHCI_MAX_CURRENT_300_MASK,  in sdhci_setup_host()
4689 	if (host->caps & SDHCI_CAN_VDD_180) {  in sdhci_setup_host()
4692 		mmc->max_current_180 = FIELD_GET(SDHCI_MAX_CURRENT_180_MASK,  in sdhci_setup_host()
4698 	if (host->ocr_mask)  in sdhci_setup_host()
4699 		ocr_avail = host->ocr_mask;  in sdhci_setup_host()
4702 	if (mmc->ocr_avail)  in sdhci_setup_host()
4703 		ocr_avail = mmc->ocr_avail;  in sdhci_setup_host()
4705 	mmc->ocr_avail = ocr_avail;  in sdhci_setup_host()
4706 	mmc->ocr_avail_sdio = ocr_avail;  in sdhci_setup_host()
4707 	if (host->ocr_avail_sdio)  in sdhci_setup_host()
4708 		mmc->ocr_avail_sdio &= host->ocr_avail_sdio;  in sdhci_setup_host()
4709 	mmc->ocr_avail_sd = ocr_avail;  in sdhci_setup_host()
4710 	if (host->ocr_avail_sd)  in sdhci_setup_host()
4711 		mmc->ocr_avail_sd &= host->ocr_avail_sd;  in sdhci_setup_host()
4713 		mmc->ocr_avail_sd &= ~MMC_VDD_165_195;  in sdhci_setup_host()
4714 	mmc->ocr_avail_mmc = ocr_avail;  in sdhci_setup_host()
4715 	if (host->ocr_avail_mmc)  in sdhci_setup_host()
4716 		mmc->ocr_avail_mmc &= host->ocr_avail_mmc;  in sdhci_setup_host()
4718 	if (mmc->ocr_avail == 0) {  in sdhci_setup_host()
4721 		ret = -ENODEV;  in sdhci_setup_host()
4725 	if ((mmc->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |  in sdhci_setup_host()
4728 	    (mmc->caps2 & (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V)))  in sdhci_setup_host()
4729 		host->flags |= SDHCI_SIGNALING_180;  in sdhci_setup_host()
4731 	if (mmc->caps2 & MMC_CAP2_HSX00_1_2V)  in sdhci_setup_host()
4732 		host->flags |= SDHCI_SIGNALING_120;  in sdhci_setup_host()
4734 	spin_lock_init(&host->lock);  in sdhci_setup_host()
4741 	mmc->max_req_size = 524288;  in sdhci_setup_host()
4747 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4748 		mmc->max_segs = SDHCI_MAX_SEGS;  in sdhci_setup_host()
4749 	} else if (host->flags & SDHCI_USE_SDMA) {  in sdhci_setup_host()
4750 		mmc->max_segs = 1;  in sdhci_setup_host()
4751 		mmc->max_req_size = min_t(size_t, mmc->max_req_size,  in sdhci_setup_host()
4754 		mmc->max_segs = SDHCI_MAX_SEGS;  in sdhci_setup_host()
4762 	if (host->flags & SDHCI_USE_ADMA) {  in sdhci_setup_host()
4763 		if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) {  in sdhci_setup_host()
4764 			host->max_adma = 65532; /* 32-bit alignment */  in sdhci_setup_host()
4765 			mmc->max_seg_size = 65535;  in sdhci_setup_host()
4770 			 * descriptor (16-bit field), but some controllers do  in sdhci_setup_host()
4779 			if (mmc->max_seg_size < PAGE_SIZE)  in sdhci_setup_host()
4780 				mmc->max_seg_size = PAGE_SIZE;  in sdhci_setup_host()
4782 			mmc->max_seg_size = 65536;  in sdhci_setup_host()
4785 		mmc->max_seg_size = mmc->max_req_size;  in sdhci_setup_host()
4792 	if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) {  in sdhci_setup_host()
4793 		mmc->max_blk_size = 2;  in sdhci_setup_host()
4795 		mmc->max_blk_size = (host->caps & SDHCI_MAX_BLOCK_MASK) >>  in sdhci_setup_host()
4797 		if (mmc->max_blk_size >= 3) {  in sdhci_setup_host()
4800 			mmc->max_blk_size = 0;  in sdhci_setup_host()
4804 	mmc->max_blk_size = 512 << mmc->max_blk_size;  in sdhci_setup_host()
4809 	mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;  in sdhci_setup_host()
4811 	if (mmc->max_segs == 1)  in sdhci_setup_host()
4812 		/* This may alter mmc->*_blk_* parameters */  in sdhci_setup_host()
4818 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_setup_host()
4819 		regulator_disable(mmc->supply.vqmmc);  in sdhci_setup_host()
4821 	if (host->align_buffer)  in sdhci_setup_host()
4822 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_setup_host()
4823 				  host->adma_table_sz, host->align_buffer,  in sdhci_setup_host()
4824 				  host->align_addr);  in sdhci_setup_host()
4825 	host->adma_table = NULL;  in sdhci_setup_host()
4826 	host->align_buffer = NULL;  in sdhci_setup_host()
4834 	struct mmc_host *mmc = host->mmc;  in sdhci_cleanup_host()
4836 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_cleanup_host()
4837 		regulator_disable(mmc->supply.vqmmc);  in sdhci_cleanup_host()
4839 	if (host->align_buffer)  in sdhci_cleanup_host()
4840 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_cleanup_host()
4841 				  host->adma_table_sz, host->align_buffer,  in sdhci_cleanup_host()
4842 				  host->align_addr);  in sdhci_cleanup_host()
4844 	if (host->use_external_dma)  in sdhci_cleanup_host()
4847 	host->adma_table = NULL;  in sdhci_cleanup_host()
4848 	host->align_buffer = NULL;  in sdhci_cleanup_host()
4852 int __sdhci_add_host(struct sdhci_host *host)  in __sdhci_add_host()
4854 	unsigned int flags = WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_HIGHPRI;  in __sdhci_add_host()
4855 	struct mmc_host *mmc = host->mmc;  in __sdhci_add_host()
4856 	int ret;  in __sdhci_add_host()
4858 	if ((mmc->caps2 & MMC_CAP2_CQE) &&  in __sdhci_add_host()
4859 	    (host->quirks & SDHCI_QUIRK_BROKEN_CQE)) {  in __sdhci_add_host()
4860 		mmc->caps2 &= ~MMC_CAP2_CQE;  in __sdhci_add_host()
4861 		mmc->cqe_ops = NULL;  in __sdhci_add_host()
4864 	host->complete_wq = alloc_workqueue("sdhci", flags, 0);  in __sdhci_add_host()
4865 	if (!host->complete_wq)  in __sdhci_add_host()
4866 		return -ENOMEM;  in __sdhci_add_host()
4868 	INIT_WORK(&host->complete_work, host->complete_work_fn);  in __sdhci_add_host()
4870 	timer_setup(&host->timer, sdhci_timeout_timer, 0);  in __sdhci_add_host()
4871 	timer_setup(&host->data_timer, sdhci_timeout_data_timer, 0);  in __sdhci_add_host()
4873 	init_waitqueue_head(&host->buf_ready_int);  in __sdhci_add_host()
4877 	ret = request_threaded_irq(host->irq, sdhci_irq, host->thread_irq_fn,  in __sdhci_add_host()
4881 		       mmc_hostname(mmc), host->irq, ret);  in __sdhci_add_host()
4897 		mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)),  in __sdhci_add_host()
4898 		host->use_external_dma ? "External DMA" :  in __sdhci_add_host()
4899 		(host->flags & SDHCI_USE_ADMA) ?  in __sdhci_add_host()
4900 		(host->flags & SDHCI_USE_64_BIT_DMA) ? "ADMA 64-bit" : "ADMA" :  in __sdhci_add_host()
4901 		(host->flags & SDHCI_USE_SDMA) ? "DMA" : "PIO");  in __sdhci_add_host()
4913 	free_irq(host->irq, host);  in __sdhci_add_host()
4915 	destroy_workqueue(host->complete_wq);  in __sdhci_add_host()
4921 int sdhci_add_host(struct sdhci_host *host)  in sdhci_add_host()
4923 	int ret;  in sdhci_add_host()
4942 void sdhci_remove_host(struct sdhci_host *host, int dead)  in sdhci_remove_host()
4944 	struct mmc_host *mmc = host->mmc;  in sdhci_remove_host()
4948 		spin_lock_irqsave(&host->lock, flags);  in sdhci_remove_host()
4950 		host->flags |= SDHCI_DEVICE_DEAD;  in sdhci_remove_host()
4955 			sdhci_error_out_mrqs(host, -ENOMEDIUM);  in sdhci_remove_host()
4958 		spin_unlock_irqrestore(&host->lock, flags);  in sdhci_remove_host()
4972 	free_irq(host->irq, host);  in sdhci_remove_host()
4974 	del_timer_sync(&host->timer);  in sdhci_remove_host()
4975 	del_timer_sync(&host->data_timer);  in sdhci_remove_host()
4977 	destroy_workqueue(host->complete_wq);  in sdhci_remove_host()
4979 	if (host->sdhci_core_to_disable_vqmmc)  in sdhci_remove_host()
4980 		regulator_disable(mmc->supply.vqmmc);  in sdhci_remove_host()
4982 	if (host->align_buffer)  in sdhci_remove_host()
4983 		dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +  in sdhci_remove_host()
4984 				  host->adma_table_sz, host->align_buffer,  in sdhci_remove_host()
4985 				  host->align_addr);  in sdhci_remove_host()
4987 	if (host->use_external_dma)  in sdhci_remove_host()
4990 	host->adma_table = NULL;  in sdhci_remove_host()
4991 	host->align_buffer = NULL;  in sdhci_remove_host()
4998 	mmc_free_host(host->mmc);  in sdhci_free_host()
5009 static int __init sdhci_drv_init(void)  in sdhci_drv_init()