drm/i915: Update ring->sync_to() to take a request structure

Updated the ring->sync_to() implementations to take a request instead of a ring.
Also updated the tracer to include the request id.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
[danvet: Rebase since I didn't merge the patch which added ->uniq.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_gem.c

@@ -3139,8 +3139,8 @@ __i915_gem_object_sync(struct drm_i915_gem_object *obj,
 				return ret;
 		}
 
-		trace_i915_gem_ring_sync_to(from, to, from_req);
+		trace_i915_gem_ring_sync_to(*to_req, from, from_req);
-		ret = to->semaphore.sync_to(to, from, seqno);
+		ret = to->semaphore.sync_to(*to_req, from, seqno);
 		if (ret)
 			return ret;
 

drivers/gpu/drm/i915/i915_trace.h

@@ -424,10 +424,10 @@ TRACE_EVENT(i915_gem_evict_vm,
 );
 
 TRACE_EVENT(i915_gem_ring_sync_to,
-	    TP_PROTO(struct intel_engine_cs *from,
+	    TP_PROTO(struct drm_i915_gem_request *to_req,
-		     struct intel_engine_cs *to,
+		     struct intel_engine_cs *from,
 		     struct drm_i915_gem_request *req),
-	    TP_ARGS(from, to, req),
+	    TP_ARGS(to_req, from, req),
 
 	    TP_STRUCT__entry(
 			     __field(u32, dev)
@@ -439,7 +439,7 @@ TRACE_EVENT(i915_gem_ring_sync_to,
 	    TP_fast_assign(
 			   __entry->dev = from->dev->primary->index;
 			   __entry->sync_from = from->id;
-			   __entry->sync_to = to->id;
+			   __entry->sync_to = to_req->ring->id;
 			   __entry->seqno = i915_gem_request_get_seqno(req);
 			   ),
 

drivers/gpu/drm/i915/intel_ringbuffer.c

@@ -1333,10 +1333,11 @@ static inline bool i915_gem_has_seqno_wrapped(struct drm_device *dev,
  */
 
 static int
-gen8_ring_sync(struct intel_engine_cs *waiter,
+gen8_ring_sync(struct drm_i915_gem_request *waiter_req,
 	       struct intel_engine_cs *signaller,
 	       u32 seqno)
 {
+	struct intel_engine_cs *waiter = waiter_req->ring;
 	struct drm_i915_private *dev_priv = waiter->dev->dev_private;
 	int ret;
 
@@ -1358,10 +1359,11 @@ gen8_ring_sync(struct intel_engine_cs *waiter,
 }
 
 static int
-gen6_ring_sync(struct intel_engine_cs *waiter,
+gen6_ring_sync(struct drm_i915_gem_request *waiter_req,
 	       struct intel_engine_cs *signaller,
 	       u32 seqno)
 {
+	struct intel_engine_cs *waiter = waiter_req->ring;
 	u32 dw1 = MI_SEMAPHORE_MBOX |
 		  MI_SEMAPHORE_COMPARE |
 		  MI_SEMAPHORE_REGISTER;

drivers/gpu/drm/i915/intel_ringbuffer.h

@@ -252,8 +252,8 @@ struct  intel_engine_cs {
 		};
 
 		/* AKA wait() */
-		int	(*sync_to)(struct intel_engine_cs *ring,
+		int	(*sync_to)(struct drm_i915_gem_request *to_req,
-				   struct intel_engine_cs *to,
+				   struct intel_engine_cs *from,
 				   u32 seqno);
 		int	(*signal)(struct intel_engine_cs *signaller,
 				  /* num_dwords needed by caller */