drm/i915: Add ioctl to set 'purgeability' of objects

[safe/jmp/linux-2.6] / include / drm / i915_drm.h

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 8e1e925..607c9da 100644 (file)
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -185,6 +185,7 @@ typedef struct _drm_i915_sarea {
 #define DRM_I915_GEM_GET_APERTURE 0x23
 #define DRM_I915_GEM_MMAP_GTT  0x24
 #define DRM_I915_GET_PIPE_FROM_CRTC_ID 0x25
+#define DRM_I915_GEM_MADVISE   0x26
 
 #define DRM_IOCTL_I915_INIT            DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
 #define DRM_IOCTL_I915_FLUSH           DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@@ -221,6 +222,7 @@ typedef struct _drm_i915_sarea {
 #define DRM_IOCTL_I915_GEM_GET_TILING  DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_TILING, struct drm_i915_gem_get_tiling)
 #define DRM_IOCTL_I915_GEM_GET_APERTURE        DRM_IOR  (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
 #define DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GET_PIPE_FROM_CRTC_ID, struct drm_intel_get_pipe_from_crtc_id)
+#define DRM_IOCTL_I915_GEM_MADVISE     DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MADVISE, struct drm_i915_gem_madvise)
 
 /* Allow drivers to submit batchbuffers directly to hardware, relying
  * on the security mechanisms provided by hardware.
@@ -667,4 +669,20 @@ struct drm_i915_get_pipe_from_crtc_id {
        __u32 pipe;
 };
 
+#define I915_MADV_WILLNEED 0
+#define I915_MADV_DONTNEED 1
+
+struct drm_i915_gem_madvise {
+       /** Handle of the buffer to change the backing store advice */
+       __u32 handle;
+
+       /* Advice: either the buffer will be needed again in the near future,
+        *         or wont be and could be discarded under memory pressure.
+        */
+       __u32 madv;
+
+       /** Whether the backing store still exists. */
+       __u32 retained;
+};
+
 #endif                         /* _I915_DRM_H_ */