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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 06:07:40 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-13 06:07:40 +0400
commit125aae1d7f51ee28d821a1374a2b7be13972c5dc (patch)
treecd366e9940f8fdff1c8dc23eaac2ec9b272b9fa3 /include/uapi
parent79c63eeb805d086f52e5efda9c8d321beeed0b2b (diff)
parent60fe5771be6aa3f37d5887aa01c04f733130a559 (diff)
downloadlinux-125aae1d7f51ee28d821a1374a2b7be13972c5dc.tar.xz
Merge tag 'mmc-merge-for-3.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull two more mmc changes from Chris Ball: - Disintegrate UAPI - fix a mismerge that caused a build error. * tag 'mmc-merge-for-3.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: UAPI: (Scripted) Disintegrate include/linux/mmc mmc: mxs-mmc: Fix merge issue causing build error
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/mmc/Kbuild1
-rw-r--r--include/uapi/linux/mmc/ioctl.h57
2 files changed, 58 insertions, 0 deletions
diff --git a/include/uapi/linux/mmc/Kbuild b/include/uapi/linux/mmc/Kbuild
index aafaa5aa54d4..8c1d2cb75e33 100644
--- a/include/uapi/linux/mmc/Kbuild
+++ b/include/uapi/linux/mmc/Kbuild
@@ -1 +1,2 @@
# UAPI Header export list
+header-y += ioctl.h
diff --git a/include/uapi/linux/mmc/ioctl.h b/include/uapi/linux/mmc/ioctl.h
new file mode 100644
index 000000000000..1f5e68923929
--- /dev/null
+++ b/include/uapi/linux/mmc/ioctl.h
@@ -0,0 +1,57 @@
+#ifndef LINUX_MMC_IOCTL_H
+#define LINUX_MMC_IOCTL_H
+
+#include <linux/types.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 */