From 3e48613b482a8ca01ea5719e9cc342a9d4b28db0 Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <jakob@vmware.com>
Date: Tue, 24 Nov 2009 18:00:12 +0100
Subject: [PATCH] Bring dirty code from old branch

---
 include/drm/drm.h      |  1 +
 include/drm/drm_mode.h |  9 +++++++++
 xf86drmMode.c          | 12 ++++++++++++
 xf86drmMode.h          | 20 ++++++++++++++++++++
 4 files changed, 42 insertions(+)

diff --git a/include/drm/drm.h b/include/drm/drm.h
index 649c46f3..8e1ffb86 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -696,6 +696,7 @@ struct drm_gem_open {
 #define DRM_IOCTL_MODE_GETFB		DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_ADDFB		DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_RMFB		DRM_IOWR(0xAF, unsigned int)
+#define DRM_IOCTL_MODE_DIRTYFB		DRM_IOWR(0xB0, struct drm_mode_fb_dirty_cmd)
 
 /**
  * Device specific ioctls should only be in their respective headers
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 852505e7..92526537 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -222,6 +222,15 @@ struct drm_mode_fb_cmd {
 	__u32 handle;
 };
 
+struct drm_mode_fb_dirty_cmd {
+	__u32 fb_id;
+	__u32 flags;
+	__u32 num_clips;
+	__u32 reserved1;
+	__u64 reserved2;
+	__u64 clips_ptr;
+};
+
 struct drm_mode_mode_cmd {
 	__u32 connector_id;
 	struct drm_mode_modeinfo mode;
diff --git a/xf86drmMode.c b/xf86drmMode.c
index 6d85113a..7481ad60 100644
--- a/xf86drmMode.c
+++ b/xf86drmMode.c
@@ -241,6 +241,18 @@ drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
 	return r;
 }
 
+int drmModeDirtyFB(int fd, uint32_t bufferId,
+		   drmModeClipPtr clips, uint32_t num_clips)
+{
+	struct drm_mode_fb_dirty_cmd dirty = { 0 };
+
+	dirty.fb_id = bufferId;
+	dirty.clips_ptr = VOID2U64(clips);
+	dirty.num_clips = num_clips;
+
+	return drmIoctl(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
+}
+
 
 /*
  * Crtc functions
diff --git a/xf86drmMode.h b/xf86drmMode.h
index 62304bb9..226d9467 100644
--- a/xf86drmMode.h
+++ b/xf86drmMode.h
@@ -145,6 +145,17 @@
 
 #endif /* _DRM_MODE_H */
 
+
+/*
+ * Feature defines
+ *
+ * Just because these are defined doesn't mean that the kernel
+ * can do that feature, its just for new code vs old libdrm.
+ */
+#define DRM_MODE_FEATURE_KMS		1
+#define DRM_MODE_FEATURE_DIRTYFB	1
+
+
 typedef struct _drmModeRes {
 
 	int count_fbs;
@@ -185,6 +196,8 @@ typedef struct _drmModeFB {
 	uint32_t handle;
 } drmModeFB, *drmModeFBPtr;
 
+typedef struct drm_clip_rect drmModeClip, *drmModeClipPtr;
+
 typedef struct _drmModePropertyBlob {
 	uint32_t id;
 	uint32_t length;
@@ -293,6 +306,13 @@ extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
  */
 extern int drmModeRmFB(int fd, uint32_t bufferId);
 
+/**
+ * Mark a region of a framebuffer as dirty.
+ */
+extern int drmModeDirtyFB(int fd, uint32_t bufferId,
+			  drmModeClipPtr clips, uint32_t num_clips);
+
+
 /*
  * Crtc functions
  */