| #ifndef LINUX_MMC_IOCTL_H |
| #define LINUX_MMC_IOCTL_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 |
| |
| #define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_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 * 256) |
| #endif /* LINUX_MMC_IOCTL_H */ |