Linux kernel mirror (for testing)
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linux
1#ifndef LINUX_MMC_IOCTL_H
2#define LINUX_MMC_IOCTL_H
3
4#include <linux/types.h>
5
6struct mmc_ioc_cmd {
7 /* Implies direction of data. true = write, false = read */
8 int write_flag;
9
10 /* Application-specific command. true = precede with CMD55 */
11 int is_acmd;
12
13 __u32 opcode;
14 __u32 arg;
15 __u32 response[4]; /* CMD response */
16 unsigned int flags;
17 unsigned int blksz;
18 unsigned int blocks;
19
20 /*
21 * Sleep at least postsleep_min_us useconds, and at most
22 * postsleep_max_us useconds *after* issuing command. Needed for
23 * some read commands for which cards have no other way of indicating
24 * they're ready for the next command (i.e. there is no equivalent of
25 * a "busy" indicator for read operations).
26 */
27 unsigned int postsleep_min_us;
28 unsigned int postsleep_max_us;
29
30 /*
31 * Override driver-computed timeouts. Note the difference in units!
32 */
33 unsigned int data_timeout_ns;
34 unsigned int cmd_timeout_ms;
35
36 /*
37 * For 64-bit machines, the next member, ``__u64 data_ptr``, wants to
38 * be 8-byte aligned. Make sure this struct is the same size when
39 * built for 32-bit.
40 */
41 __u32 __pad;
42
43 /* DAT buffer */
44 __u64 data_ptr;
45};
46#define mmc_ioc_cmd_set_data(ic, ptr) ic.data_ptr = (__u64)(unsigned long) ptr
47
48/**
49 * struct mmc_ioc_multi_cmd - multi command information
50 * @num_of_cmds: Number of commands to send. Must be equal to or less than
51 * MMC_IOC_MAX_CMDS.
52 * @cmds: Array of commands with length equal to 'num_of_cmds'
53 */
54struct mmc_ioc_multi_cmd {
55 __u64 num_of_cmds;
56 struct mmc_ioc_cmd cmds[0];
57};
58
59#define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd)
60/*
61 * MMC_IOC_MULTI_CMD: Used to send an array of MMC commands described by
62 * the structure mmc_ioc_multi_cmd. The MMC driver will issue all
63 * commands in array in sequence to card.
64 */
65#define MMC_IOC_MULTI_CMD _IOWR(MMC_BLOCK_MAJOR, 1, struct mmc_ioc_multi_cmd)
66/*
67 * Since this ioctl is only meant to enhance (and not replace) normal access
68 * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES
69 * is enforced per ioctl call. For larger data transfers, use the normal
70 * block device operations.
71 */
72#define MMC_IOC_MAX_BYTES (512L * 256)
73#define MMC_IOC_MAX_CMDS 255
74#endif /* LINUX_MMC_IOCTL_H */