libdrm: add support for i915 GTT mapping ioctl

Add a drm_intel_gem_bo_map_gtt() function for mapping a buffer object
through the aperture rather than directly to its CPU cacheable memory.

1 files changed, 8 insertions, 0 deletions

diff --git a/libdrm/intel/intel_bufmgr.h b/libdrm/intel/intel_bufmgr.h
index e3af886b..361e4345 100644
--- a/libdrm/intel/intel_bufmgr.h
+++ b/libdrm/intel/intel_bufmgr.h
@@ -48,6 +48,13 @@ struct _drm_intel_bo {
      */
     unsigned long size;
     /**
+     * Alignment requirement for object
+     *
+     * Used for GTT mapping & pinning the object.
+     */
+    unsigned long align;
+
+    /**
      * Card virtual address (offset from the beginning of the aperture) for the
      * object.  Only valid while validated.
      */
@@ -98,6 +105,7 @@ drm_intel_bo *drm_intel_bo_gem_create_from_name(drm_intel_bufmgr *bufmgr,
 						const char *name,
 						unsigned int handle);
 void drm_intel_bufmgr_gem_enable_reuse(drm_intel_bufmgr *bufmgr);
+int drm_intel_gem_bo_map_gtt(drm_intel_bo *bo);
 
 /* drm_intel_bufmgr_fake.c */
 drm_intel_bufmgr *drm_intel_bufmgr_fake_init(int fd,