drivers/mmc/core/mmc_ops.h

Source file repositories/reference/linux-study-clean/drivers/mmc/core/mmc_ops.h

File Facts

System
Linux kernel
Corpus path
drivers/mmc/core/mmc_ops.h
Extension
.h
Size
2549 bytes
Lines
76
Domain
Driver Families
Bucket
drivers/mmc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _MMC_MMC_OPS_H
#define _MMC_MMC_OPS_H

#include <linux/types.h>

enum mmc_busy_cmd {
	MMC_BUSY_CMD6,
	MMC_BUSY_ERASE,
	MMC_BUSY_HPI,
	MMC_BUSY_EXTR_SINGLE,
	MMC_BUSY_IO,
};

struct mmc_host;
struct mmc_card;
struct mmc_command;

int mmc_select_card(struct mmc_card *card);
int mmc_deselect_cards(struct mmc_host *host);
int mmc_set_dsr(struct mmc_host *host);
int __mmc_go_idle(struct mmc_host *host);
int mmc_go_idle(struct mmc_host *host);
int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
int mmc_set_relative_addr(struct mmc_card *card);
int mmc_send_adtc_data(struct mmc_card *card, struct mmc_host *host, u32 opcode,
		       u32 args, void *buf, unsigned len);
int mmc_send_csd(struct mmc_card *card, u32 *csd);
int __mmc_send_status(struct mmc_card *card, u32 *status, unsigned int retries);
int mmc_send_cid(struct mmc_host *host, u32 *cid);
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
int mmc_bus_test(struct mmc_card *card, u8 bus_width);
bool mmc_card_can_ext_csd(struct mmc_card *card);
int mmc_switch_status(struct mmc_card *card, bool crc_err_fatal);
bool mmc_prepare_busy_cmd(struct mmc_host *host, struct mmc_command *cmd,
			  unsigned int timeout_ms);
int __mmc_poll_for_busy(struct mmc_host *host, unsigned int period_us,
			unsigned int timeout_ms,
			int (*busy_cb)(void *cb_data, bool *busy),
			void *cb_data);
int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms,
		      bool retry_crc_err, enum mmc_busy_cmd busy_cmd);
int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
		unsigned int timeout_ms, unsigned char timing,
		bool send_status, bool retry_crc_err, unsigned int retries);
int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
		unsigned int timeout_ms);
void mmc_run_bkops(struct mmc_card *card);
int mmc_cmdq_enable(struct mmc_card *card);
int mmc_cmdq_disable(struct mmc_card *card);
int mmc_sanitize(struct mmc_card *card, unsigned int timeout_ms);

static inline u32 unstuff_bits(const u32 *resp, int start, int size)
{
	const int __size = size;
	const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1;
	const int __off = 3 - (start / 32);
	const int __shft = start & 31;
	u32 __res = resp[__off] >> __shft;

	if (__size + __shft > 32)
		__res |= resp[__off - 1] << ((32 - __shft) % 32);

	return __res & __mask;
}

#endif

Annotation

Implementation Notes