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git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - include/uapi/linux/mmc/ioctl.h
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef LINUX_MMC_IOCTL_H
3 #define LINUX_MMC_IOCTL_H
5 #include <linux/types.h>
9 * Direction of data: nonzero = write, zero = read.
10 * Bit 31 selects 'Reliable Write' for RPMB.
14 /* Application-specific command. true = precede with CMD55 */
19 __u32 response
[4]; /* CMD response */
25 * Sleep at least postsleep_min_us useconds, and at most
26 * postsleep_max_us useconds *after* issuing command. Needed for
27 * some read commands for which cards have no other way of indicating
28 * they're ready for the next command (i.e. there is no equivalent of
29 * a "busy" indicator for read operations).
31 unsigned int postsleep_min_us
;
32 unsigned int postsleep_max_us
;
35 * Override driver-computed timeouts. Note the difference in units!
37 unsigned int data_timeout_ns
;
38 unsigned int cmd_timeout_ms
;
41 * For 64-bit machines, the next member, ``__u64 data_ptr``, wants to
42 * be 8-byte aligned. Make sure this struct is the same size when
50 #define mmc_ioc_cmd_set_data(ic, ptr) ic.data_ptr = (__u64)(unsigned long) ptr
53 * struct mmc_ioc_multi_cmd - multi command information
54 * @num_of_cmds: Number of commands to send. Must be equal to or less than
56 * @cmds: Array of commands with length equal to 'num_of_cmds'
58 struct mmc_ioc_multi_cmd
{
60 struct mmc_ioc_cmd cmds
[0];
63 #define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd)
65 * MMC_IOC_MULTI_CMD: Used to send an array of MMC commands described by
66 * the structure mmc_ioc_multi_cmd. The MMC driver will issue all
67 * commands in array in sequence to card.
69 #define MMC_IOC_MULTI_CMD _IOWR(MMC_BLOCK_MAJOR, 1, struct mmc_ioc_multi_cmd)
71 * Since this ioctl is only meant to enhance (and not replace) normal access
72 * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES
73 * is enforced per ioctl call. For larger data transfers, use the normal
74 * block device operations.
76 #define MMC_IOC_MAX_BYTES (512L * 1024)
77 #define MMC_IOC_MAX_CMDS 255
78 #endif /* LINUX_MMC_IOCTL_H */