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- /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
- #ifndef LINUX_MMC_IOCTL_H
- #define LINUX_MMC_IOCTL_H
- #include <linux/types.h>
- #include <linux/major.h>
- struct mmc_ioc_cmd {
- /*
- * Direction of data: nonzero = write, zero = read.
- * Bit 31 selects 'Reliable Write' for RPMB.
- */
- 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[];
- };
- #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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