| John Calixto | cb87ea2 | 2011-04-26 18:56:29 -0400 | [diff] [blame] | 1 | #ifndef LINUX_MMC_IOCTL_H |
| 2 | #define LINUX_MMC_IOCTL_H |
| Bobby Powers | 10db4e1 | 2012-03-23 15:01:51 -0700 | [diff] [blame] | 3 | |
| 4 | #include <linux/types.h> |
| 5 | |
| John Calixto | cb87ea2 | 2011-04-26 18:56:29 -0400 | [diff] [blame] | 6 | struct 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 | #define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd) |
| 49 | |
| 50 | /* |
| 51 | * Since this ioctl is only meant to enhance (and not replace) normal access |
| 52 | * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES |
| 53 | * is enforced per ioctl call. For larger data transfers, use the normal |
| 54 | * block device operations. |
| 55 | */ |
| 56 | #define MMC_IOC_MAX_BYTES (512L * 256) |
| Robert P. J. Day | 100e918 | 2011-05-27 16:04:03 -0400 | [diff] [blame] | 57 | #endif /* LINUX_MMC_IOCTL_H */ |