Add support for tracking drawable information to core

Actually make the existing ioctls for adding and removing drawables do
something useful, and add another ioctl for the X server to update drawable
information. The only kind of drawable information tracked so far is cliprects.
(cherry picked from 29598e5253ff5c085ccf63580fd24b84db848424 commit)

2 files changed, 19 insertions, 0 deletions

diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 31d1c164..ab884eb5 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -1398,6 +1398,22 @@ int drmDestroyDrawable(int fd, drm_drawable_t handle)
     return 0;
 }
 
+int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
+			   drm_drawable_info_type_t type, unsigned int num,
+			   void *data)
+{
+    drm_update_draw_t update;
+
+    update.handle = handle;
+    update.type = type;
+    update.num = num;
+    update.data = (unsigned long long)(unsigned long)data;
+
+    if (ioctl(fd, DRM_IOCTL_UPDATE_DRAW, &update)) return -errno;
+
+    return 0;
+}
+
 /**
  * Acquire the AGP device.
  *
diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h
index d97681c0..d39974de 100644
--- a/libdrm/xf86drm.h
+++ b/libdrm/xf86drm.h
@@ -545,6 +545,9 @@ extern int           drmSwitchToContext(int fd, drm_context_t context);
 extern int           drmDestroyContext(int fd, drm_context_t handle);
 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
+extern int           drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
+					   drm_drawable_info_type_t type,
+					   unsigned int num, void *data);
 extern int           drmCtlInstHandler(int fd, int irq);
 extern int           drmCtlUninstHandler(int fd);