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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-22 14:34:51 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-22 14:34:51 +0200
commitc2fb7916927e989ea424e61ce5fe617e54878827 (patch)
tree02f9d5482075f8931637d82bb697a6470270136a /include/uapi/linux/mmtimer.h
parent29de6ce574870a0d3fd157afdbf51c0282e2bf63 (diff)
parent6f0c0580b70c89094b3422ba81118c7b959c7556 (diff)
Merge tag 'v3.7-rc2' into drm-intel-next-queued
Linux 3.7-rc2 Backmerge to solve two ugly conflicts: - uapi. We've already added new ioctl definitions for -next. Do I need to say more? - wc support gtt ptes. We've had to revert this for snb+ for 3.7 and also fix a few other things in the code. Now we know how to make it work on snb+, but to avoid losing the other fixes do the backmerge first before re-enabling wc gtt ptes on snb+. And a few other minor things, among them git getting confused in intel_dp.c and seemingly causing a conflict out of nothing ... Conflicts: drivers/gpu/drm/i915/i915_reg.h drivers/gpu/drm/i915/intel_display.c drivers/gpu/drm/i915/intel_dp.c drivers/gpu/drm/i915/intel_modes.c include/drm/i915_drm.h Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/uapi/linux/mmtimer.h')
-rw-r--r--include/uapi/linux/mmtimer.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/uapi/linux/mmtimer.h b/include/uapi/linux/mmtimer.h
new file mode 100644
index 000000000000..884cabf16088
--- /dev/null
+++ b/include/uapi/linux/mmtimer.h
@@ -0,0 +1,56 @@
+/*
+ * Intel Multimedia Timer device interface
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2001-2004 Silicon Graphics, Inc. All rights reserved.
+ *
+ * This file should define an interface compatible with the IA-PC Multimedia
+ * Timers Draft Specification (rev. 0.97) from Intel. Note that some
+ * hardware may not be able to safely export its registers to userspace,
+ * so the ioctl interface should support all necessary functionality.
+ *
+ * 11/01/01 - jbarnes - initial revision
+ * 9/10/04 - Christoph Lameter - remove interrupt support
+ * 9/17/04 - jbarnes - remove test program, move some #defines to the driver
+ */
+
+#ifndef _LINUX_MMTIMER_H
+#define _LINUX_MMTIMER_H
+
+/*
+ * Breakdown of the ioctl's available. An 'optional' next to the command
+ * indicates that supporting this command is optional, while 'required'
+ * commands must be implemented if conformance is desired.
+ *
+ * MMTIMER_GETOFFSET - optional
+ * Should return the offset (relative to the start of the page where the
+ * registers are mapped) for the counter in question.
+ *
+ * MMTIMER_GETRES - required
+ * The resolution of the clock in femto (10^-15) seconds
+ *
+ * MMTIMER_GETFREQ - required
+ * Frequency of the clock in Hz
+ *
+ * MMTIMER_GETBITS - required
+ * Number of bits in the clock's counter
+ *
+ * MMTIMER_MMAPAVAIL - required
+ * Returns nonzero if the registers can be mmap'd into userspace, 0 otherwise
+ *
+ * MMTIMER_GETCOUNTER - required
+ * Gets the current value in the counter
+ */
+#define MMTIMER_IOCTL_BASE 'm'
+
+#define MMTIMER_GETOFFSET _IO(MMTIMER_IOCTL_BASE, 0)
+#define MMTIMER_GETRES _IOR(MMTIMER_IOCTL_BASE, 1, unsigned long)
+#define MMTIMER_GETFREQ _IOR(MMTIMER_IOCTL_BASE, 2, unsigned long)
+#define MMTIMER_GETBITS _IO(MMTIMER_IOCTL_BASE, 4)
+#define MMTIMER_MMAPAVAIL _IO(MMTIMER_IOCTL_BASE, 6)
+#define MMTIMER_GETCOUNTER _IOR(MMTIMER_IOCTL_BASE, 9, unsigned long)
+
+#endif /* _LINUX_MMTIMER_H */