1 /* SPDX-License-Identifier: GPL-2.0-only */
3  *  linux/include/linux/mmc/host.h
12 #include <linux/fault-inject.h>
14 #include <linux/mmc/core.h>
15 #include <linux/mmc/card.h>
16 #include <linux/mmc/pm.h>
17 #include <linux/dma-direction.h>
18 #include <linux/blk-crypto-profile.h>
32 	unsigned char	chip_select;		/* SPI chip select */
141 	 * ios->clock might be 0. For some controllers, setting 0Hz
151 	 *   1 for a read-only card
152 	 *   -ENOSYS when not supported (equal to NULL callback)
161 	 *   -ENOSYS when not supported (equal to NULL callback)
220 	/* Free resources, and make the CQE non-operational */
224 	 * effect of ->cqe_off().
230 	 * Prepare the CQE and host controller to accept non-CQ commands. There
231 	 * is no corresponding ->cqe_on(), instead ->cqe_request() is required
255 	 * (data->error or cmd->error for DCMD).  Requests that did not error
262 	/* active mmc request */
265 	 * Check error status of completed mmc request.
272  * struct mmc_slot - MMC slot functions
274  * @cd_irq:		MMC/SD-card slot hotplug detection IRQ or -EINVAL
275  * @handler_priv:	MMC/SD-card slot context
277  * Some MMC/SD host controllers implement slot-functions like card and
278  * write-protect detection natively. However, a large number of controllers
280  * such slot-function drivers.
289  * mmc_context_info - synchronization details for mmc context
292  * @is_waiting_last_req	mmc context waiting for single running request
324 	u32			ocr_avail_sdio;	/* SDIO-specific OCR */
325 	u32			ocr_avail_sd;	/* SD-specific OCR */
326 	u32			ocr_avail_mmc;	/* MMC-specific OCR */
332 #define MMC_VDD_165_195		0x00000080	/* VDD voltage 1.65 - 1.95 */
353 #define MMC_CAP_MMC_HIGHSPEED	(1 << 1)	/* Can do MMC high-speed timing */
354 #define MMC_CAP_SD_HIGHSPEED	(1 << 2)	/* Can do SD high-speed timing */
356 #define MMC_CAP_SPI		(1 << 4)	/* Talks only SPI protocols */
357 #define MMC_CAP_NEEDS_POLL	(1 << 5)	/* Needs polling for card-detection */
359 #define MMC_CAP_AGGRESSIVE_PM	(1 << 7)	/* Suspend (e)MMC/SD at idle  */
399 #define MMC_CAP2_CD_ACTIVE_HIGH	(1 << 10)	/* Card-detect signal active high */
400 #define MMC_CAP2_RO_ACTIVE_HIGH	(1 << 11)	/* Write-protect signal active high */
409 …_WRITE_PROTECT (1 << 18)	/* No physical write protect pin, assume that card is always read-write */
413 #define MMC_CAP2_NO_MMC		(1 << 22)	/* Do not send (e)MMC commands during initialization */
423 #define MMC_CAP2_ALT_GPT_TEGRA	(1 << 28)	/* Host with eMMC that has GPT entry at a non-standard loc…
425 	int			fixed_drv_type;	/* fixed driver type for non-removable media */
434 	unsigned int		max_blk_size;	/* maximum size of one mmc block */
447 	unsigned int		can_retune:1;	/* re-tuning can be used */
448 	unsigned int		doing_retune:1;	/* re-tuning in progress */
449 	unsigned int		retune_now:1;	/* do re-tuning at next req */
450 	unsigned int		retune_paused:1; /* re-tuning is temporarily disabled */
457 	int			need_retune;	/* re-tuning is needed */
458 	int			hold_retune;	/* hold off re-tuning */
459 	unsigned int		retune_period;	/* re-tuning period in secs */
460 	struct timer_list	retune_timer;	/* for periodic re-tuning */
473 	struct mmc_slot		slot;  member
540 	return (void *)host->private;  in mmc_priv()
548 #define mmc_host_is_spi(host)	((host)->caps & MMC_CAP_SPI)
550 #define mmc_dev(x)	((x)->parent)
551 #define mmc_classdev(x)	(&(x)->class_dev)
552 #define mmc_hostname(x)	(dev_name(&(x)->class_dev))
566 	return host->sdio_irqs > 0;  in sdio_irq_claimed()
571 	host->ops->enable_sdio_irq(host, 0);  in mmc_signal_sdio_irq()
572 	host->sdio_irq_pending = true;  in mmc_signal_sdio_irq()
573 	if (host->sdio_irq_thread)  in mmc_signal_sdio_irq()
574 		wake_up_process(host->sdio_irq_thread);  in mmc_signal_sdio_irq()
580 int mmc_regulator_set_ocr(struct mmc_host *mmc,
583 int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios);
585 static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,  in mmc_regulator_set_ocr()  argument
592 static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc,  in mmc_regulator_set_vqmmc()  argument
595 	return -EINVAL;  in mmc_regulator_set_vqmmc()
599 int mmc_regulator_get_supply(struct mmc_host *mmc);
603 	return !(host->caps & MMC_CAP_NONREMOVABLE);  in mmc_card_is_removable()
608 	return host->pm_flags & MMC_PM_KEEP_POWER;  in mmc_card_keep_power()
613 	return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;  in mmc_card_wake_sdio_irq()
619 	return card->host->ios.timing == MMC_TIMING_SD_HS ||  in mmc_card_hs()
620 		card->host->ios.timing == MMC_TIMING_MMC_HS;  in mmc_card_hs()
626 	return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 &&  in mmc_card_uhs()
627 		card->host->ios.timing <= MMC_TIMING_UHS_DDR50;  in mmc_card_uhs()
634 	if (host->can_retune)  in mmc_retune_needed()
635 		host->need_retune = 1;  in mmc_retune_needed()
640 	return host->can_retune == 1;  in mmc_can_retune()
645 	return host->doing_retune == 1;  in mmc_doing_retune()
650 	return host->doing_retune == 1 || host->doing_init_tune == 1;  in mmc_doing_tune()
655 	return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;  in mmc_get_dma_dir()
661 	host->err_stats[stat] += 1;  in mmc_debugfs_err_stats_inc()