3 files changed, 47 insertions, 6 deletions

diff --git a/src/gallium/winsys/drm/intel/gem/intel_be_api.c b/src/gallium/winsys/drm/intel/gem/intel_be_api.c
index e79ff0c6a3d..3f71c254414 100644
--- a/src/gallium/winsys/drm/intel/gem/intel_be_api.c
+++ b/src/gallium/winsys/drm/intel/gem/intel_be_api.c
@@ -11,4 +11,5 @@ struct drm_api drm_api_hocks =
 	.buffer_from_texture = i915_get_texture_buffer,
 	.buffer_from_handle = intel_be_buffer_from_handle,
 	.handle_from_buffer = intel_be_handle_from_buffer,
+	.global_handle_from_buffer = intel_be_global_handle_from_buffer,
 };
diff --git a/src/gallium/winsys/drm/intel/gem/intel_be_device.c b/src/gallium/winsys/drm/intel/gem/intel_be_device.c
index c0ba8340069..595de447267 100644
--- a/src/gallium/winsys/drm/intel/gem/intel_be_device.c
+++ b/src/gallium/winsys/drm/intel/gem/intel_be_device.c
@@ -70,6 +70,8 @@ intel_be_buffer_create(struct pipe_winsys *winsys,
 	buffer->base.alignment = alignment;
 	buffer->base.usage = usage;
 	buffer->base.size = size;
+	buffer->flinked = FALSE;
+	buffer->flink = 0;
 
 	if (usage & (PIPE_BUFFER_USAGE_VERTEX | PIPE_BUFFER_USAGE_CONSTANT)) {
 		/* Local buffer */
@@ -162,14 +164,39 @@ err:
 	return NULL;
 }
 
-unsigned
+boolean
 intel_be_handle_from_buffer(struct pipe_screen *screen,
-                            struct pipe_buffer *buf)
+                            struct pipe_buffer *buffer,
+                            unsigned *handle)
 {
-	drm_intel_bo *bo = intel_bo(buf);
-	return bo->handle;
+	drm_intel_bo *bo;
+
+	if (!buffer)
+		return FALSE;
+
+	*handle = intel_bo(buffer)->handle;
+	return TRUE;
 }
 
+boolean
+intel_be_global_handle_from_buffer(struct pipe_screen *screen,
+				   struct pipe_buffer *buffer,
+				   unsigned *handle)
+{
+	struct intel_be_buffer *buf = intel_be_buffer(buffer);
+
+	if (!buffer)
+		return FALSE;
+
+	if (!buf->flinked) {
+		if (drm_intel_bo_flink(intel_bo(buffer), &buf->flink))
+			return FALSE;
+		buf->flinked = TRUE;
+	}
+
+	*handle = buf->flink;
+	return TRUE;
+}
 /*
  * Fence
  */
diff --git a/src/gallium/winsys/drm/intel/gem/intel_be_device.h b/src/gallium/winsys/drm/intel/gem/intel_be_device.h
index 5bf7d3fc4f1..47d2176cb42 100644
--- a/src/gallium/winsys/drm/intel/gem/intel_be_device.h
+++ b/src/gallium/winsys/drm/intel/gem/intel_be_device.h
@@ -44,6 +44,8 @@ intel_be_init_device(struct intel_be_device *device, int fd, unsigned id);
 struct intel_be_buffer {
 	struct pipe_buffer base;
 	drm_intel_bo *bo;
+	boolean flinked;
+	unsigned flink;
 };
 
 /**
@@ -60,9 +62,20 @@ intel_be_buffer_from_handle(struct pipe_screen *screen,
  *
  * If buffer is destroyed handle may become invalid.
  */
-unsigned
+boolean
 intel_be_handle_from_buffer(struct pipe_screen *screen,
-                            struct pipe_buffer *buffer);
+                            struct pipe_buffer *buffer,
+                            unsigned *handle);
+
+/**
+ * Gets the global handle from a buffer.
+ *
+ * If buffer is destroyed handle may become invalid.
+ */
+boolean
+intel_be_global_handle_from_buffer(struct pipe_screen *screen,
+                                   struct pipe_buffer *buffer,
+                                   unsigned *handle);
 
 static INLINE struct intel_be_buffer *
 intel_be_buffer(struct pipe_buffer *buf)