Ensures that the batch buffer is executed by the resource streamer
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 ++++++++
include/uapi/drm/i915_drm.h | 7 ++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 47fe8ec..68aaa9b 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1074,6 +1074,14 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
if (args->flags & I915_EXEC_IS_PINNED)
flags |= I915_DISPATCH_PINNED;
+ if (args->flags & I915_EXEC_RESOURCE_STREAMER) {
+ if ((args->flags & I915_EXEC_RING_MASK) != I915_EXEC_RENDER ||
+ !IS_BROADWELL(dev))
+ return -EINVAL;
+
+ flags |= I915_DISPATCH_RS;
+ }
+
if ((args->flags & I915_EXEC_RING_MASK) > LAST_USER_RING) {
DRM_DEBUG("execbuf with unknown ring: %d\n",
(int)(args->flags & I915_EXEC_RING_MASK));
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 8a3e4ef00..adfc45d 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -734,7 +734,12 @@ struct drm_i915_gem_execbuffer2 {
*/
#define I915_EXEC_HANDLE_LUT (1<<12)
-#define __I915_EXEC_UNKNOWN_FLAGS -(I915_EXEC_HANDLE_LUT<<1)
+/** Tell the kernel that the batchbuffer is processed by
+ * the resource streamer.
+ */
+#define I915_EXEC_RESOURCE_STREAMER (1<<13)
+
+#define __I915_EXEC_UNKNOWN_FLAGS -(I915_EXEC_RESOURCE_STREAMER <<1)
#define I915_EXEC_CONTEXT_ID_MASK (0xffffffff)
#define i915_execbuffer2_set_context_id(eb2, context) \
--
1.7.9.5
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