drm/i915: Update add_request() to take a request structure

Now that all callers of i915_add_request() have a request pointer to hand, it is
possible to update the add request function to take a request pointer rather
than pulling it out of the OLR.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -2890,14 +2890,14 @@ void i915_gem_init_swizzling(struct drm_device *dev);
 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
 int __must_check i915_gpu_idle(struct drm_device *dev);
 int __must_check i915_gem_suspend(struct drm_device *dev);
-void __i915_add_request(struct intel_engine_cs *ring,
+void __i915_add_request(struct drm_i915_gem_request *req,
 			struct drm_file *file,
 			struct drm_i915_gem_object *batch_obj,
 			bool flush_caches);
-#define i915_add_request(ring) \
-	__i915_add_request(ring, NULL, NULL, true)
-#define i915_add_request_no_flush(ring) \
-	__i915_add_request(ring, NULL, NULL, false)
+#define i915_add_request(req) \
+	__i915_add_request(req, NULL, NULL, true)
+#define i915_add_request_no_flush(req) \
+	__i915_add_request(req, NULL, NULL, false)
 int __i915_wait_request(struct drm_i915_gem_request *req,
 			unsigned reset_counter,
 			bool interruptible,

drivers/gpu/drm/i915/i915_gem.c

@@ -1158,7 +1158,7 @@ i915_gem_check_olr(struct drm_i915_gem_request *req)
 	WARN_ON(!mutex_is_locked(&req->ring->dev->struct_mutex));
 
 	if (req == req->ring->outstanding_lazy_request)
-		i915_add_request(req->ring);
+		i915_add_request(req);
 
 	return 0;
 }
@@ -2468,25 +2468,25 @@ i915_gem_get_seqno(struct drm_device *dev, u32 *seqno)
  * request is not being tracked for completion but the work itself is
  * going to happen on the hardware. This would be a Bad Thing(tm).
  */
-void __i915_add_request(struct intel_engine_cs *ring,
+void __i915_add_request(struct drm_i915_gem_request *request,
 			struct drm_file *file,
 			struct drm_i915_gem_object *obj,
 			bool flush_caches)
 {
-	struct drm_i915_private *dev_priv = ring->dev->dev_private;
-	struct drm_i915_gem_request *request;
+	struct intel_engine_cs *ring;
+	struct drm_i915_private *dev_priv;
 	struct intel_ringbuffer *ringbuf;
 	u32 request_start;
 	int ret;
 
-	request = ring->outstanding_lazy_request;
 	if (WARN_ON(request == NULL))
 		return;
 
-	if (i915.enable_execlists) {
-		ringbuf = request->ctx->engine[ring->id].ringbuf;
-	} else
-		ringbuf = ring->buffer;
+	ring = request->ring;
+	dev_priv = ring->dev->dev_private;
+	ringbuf = request->ringbuf;
+
+	WARN_ON(request != ring->outstanding_lazy_request);
 
 	/*
 	 * To ensure that this call will not fail, space for its emissions
@@ -3338,7 +3338,7 @@ int i915_gpu_idle(struct drm_device *dev)
 				return ret;
 			}
 
-			i915_add_request_no_flush(req->ring);
+			i915_add_request_no_flush(req);
 		}
 
 		WARN_ON(ring->outstanding_lazy_request);
@@ -5122,7 +5122,7 @@ i915_gem_init_hw(struct drm_device *dev)
 			goto out;
 		}
 
-		i915_add_request_no_flush(ring);
+		i915_add_request_no_flush(req);
 	}
 
 out:

drivers/gpu/drm/i915/i915_gem_execbuffer.c

@@ -1066,7 +1066,7 @@ i915_gem_execbuffer_retire_commands(struct i915_execbuffer_params *params)
 	params->ring->gpu_caches_dirty = true;
 
 	/* Add a breadcrumb for the completion of the batch buffer */
-	__i915_add_request(params->ring, params->file, params->batch_obj, true);
+	__i915_add_request(params->request, params->file, params->batch_obj, true);
 }
 
 static int

drivers/gpu/drm/i915/intel_display.c

@@ -11497,7 +11497,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 	}
 
 	if (request)
-		i915_add_request_no_flush(request->ring);
+		i915_add_request_no_flush(request);
 
 	work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
 	work->enable_stall_check = true;

drivers/gpu/drm/i915/intel_lrc.c

@@ -2242,7 +2242,7 @@ int intel_lr_context_deferred_create(struct intel_context *ctx,
 				goto error;
 			}
 
-			i915_add_request_no_flush(req->ring);
+			i915_add_request_no_flush(req);
 		}
 
 		ctx->rcs_initialized = true;

drivers/gpu/drm/i915/intel_overlay.c

@@ -217,7 +217,7 @@ static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
 
 	WARN_ON(overlay->last_flip_req);
 	i915_gem_request_assign(&overlay->last_flip_req, req);
-	i915_add_request(req->ring);
+	i915_add_request(req);
 
 	overlay->flip_tail = tail;
 	ret = i915_wait_request(overlay->last_flip_req);
@@ -299,7 +299,7 @@ static int intel_overlay_continue(struct intel_overlay *overlay,
 
 	WARN_ON(overlay->last_flip_req);
 	i915_gem_request_assign(&overlay->last_flip_req, req);
-	i915_add_request(req->ring);
+	i915_add_request(req);
 
 	return 0;
 }

drivers/gpu/drm/i915/intel_ringbuffer.c

@@ -2167,8 +2167,9 @@ int intel_ring_idle(struct intel_engine_cs *ring)
 	struct drm_i915_gem_request *req;
 
 	/* We need to add any requests required to flush the objects and ring */
+	WARN_ON(ring->outstanding_lazy_request);
 	if (ring->outstanding_lazy_request)
-		i915_add_request(ring);
+		i915_add_request(ring->outstanding_lazy_request);
 
 	/* Wait upon the last request to be completed */
 	if (list_empty(&ring->request_list))