Release 4.12 include/uapi/linux/mmc/ioctl.h

#ifndef LINUX_MMC_IOCTL_H

#define LINUX_MMC_IOCTL_H

#include <linux/types.h>


struct mmc_ioc_cmd {
	/* Implies direction of data.  true = write, false = read */
	
int write_flag;

	/* Application-specific command.  true = precede with CMD55 */
	
int is_acmd;

	
__u32 opcode;
	
__u32 arg;
	
__u32 response[4];  /* CMD response */
	
unsigned int flags;
	
unsigned int blksz;
	
unsigned int blocks;

	/*
         * Sleep at least postsleep_min_us useconds, and at most
         * postsleep_max_us useconds *after* issuing command.  Needed for
         * some read commands for which cards have no other way of indicating
         * they're ready for the next command (i.e. there is no equivalent of
         * a "busy" indicator for read operations).
         */
	
unsigned int postsleep_min_us;
	
unsigned int postsleep_max_us;

	/*
         * Override driver-computed timeouts.  Note the difference in units!
         */
	
unsigned int data_timeout_ns;
	
unsigned int cmd_timeout_ms;

	/*
         * For 64-bit machines, the next member, ``__u64 data_ptr``, wants to
         * be 8-byte aligned.  Make sure this struct is the same size when
         * built for 32-bit.
         */
	
__u32 __pad;

	/* DAT buffer */
	
__u64 data_ptr;
};

#define mmc_ioc_cmd_set_data(ic, ptr) ic.data_ptr = (__u64)(unsigned long) ptr

/**
 * struct mmc_ioc_multi_cmd - multi command information
 * @num_of_cmds: Number of commands to send. Must be equal to or less than
 *      MMC_IOC_MAX_CMDS.
 * @cmds: Array of commands with length equal to 'num_of_cmds'
 */

struct mmc_ioc_multi_cmd {
	
__u64 num_of_cmds;
	
struct mmc_ioc_cmd cmds[0];
};


#define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd)
/*
 * MMC_IOC_MULTI_CMD: Used to send an array of MMC commands described by
 *      the structure mmc_ioc_multi_cmd. The MMC driver will issue all
 *      commands in array in sequence to card.
 */

#define MMC_IOC_MULTI_CMD _IOWR(MMC_BLOCK_MAJOR, 1, struct mmc_ioc_multi_cmd)
/*
 * Since this ioctl is only meant to enhance (and not replace) normal access
 * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES
 * is enforced per ioctl call.  For larger data transfers, use the normal
 * block device operations.
 */

#define MMC_IOC_MAX_BYTES  (512L * 1024)

#define MMC_IOC_MAX_CMDS    255
#endif /* LINUX_MMC_IOCTL_H */
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Directory: include/uapi/linux/mmc

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