drm/i915: Record all error ringbuffers

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -805,15 +805,20 @@ static int i915_error_state(struct seq_file *m, void *unused)
 		}
 	}
 
-	if (error->ringbuffer) {
-		struct drm_i915_error_object *obj = error->ringbuffer;
-
-		seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
-		offset = 0;
-		for (page = 0; page < obj->page_count; page++) {
-			for (elt = 0; elt < PAGE_SIZE/4; elt++) {
-				seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
-				offset += 4;
+	for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
+		if (error->ringbuffer[i]) {
+			struct drm_i915_error_object *obj = error->ringbuffer[i];
+			seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
+				   dev_priv->ring[i].name,
+				   obj->gtt_offset);
+			offset = 0;
+			for (page = 0; page < obj->page_count; page++) {
+				for (elt = 0; elt < PAGE_SIZE/4; elt++) {
+					seq_printf(m, "%08x :  %08x\n",
+						   offset,
+						   obj->pages[page][elt]);
+					offset += 4;
+				}
 			}
 		}
 	}

drivers/gpu/drm/i915/i915_drv.h

@@ -174,7 +174,7 @@ struct drm_i915_error_state {
 		int page_count;
 		u32 gtt_offset;
 		u32 *pages[0];
-	} *ringbuffer, *batchbuffer[I915_NUM_RINGS];
+	} *ringbuffer[I915_NUM_RINGS], *batchbuffer[I915_NUM_RINGS];
 	struct drm_i915_error_buffer {
 		u32 size;
 		u32 name;

drivers/gpu/drm/i915/i915_irq.c

@@ -648,9 +648,14 @@ static void
 i915_error_state_free(struct drm_device *dev,
 		      struct drm_i915_error_state *error)
 {
-	i915_error_object_free(error->batchbuffer[0]);
-	i915_error_object_free(error->batchbuffer[1]);
-	i915_error_object_free(error->ringbuffer);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++)
+		i915_error_object_free(error->batchbuffer[i]);
+
+	for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++)
+		i915_error_object_free(error->ringbuffer[i]);
+
 	kfree(error->active_bo);
 	kfree(error->overlay);
 	kfree(error);
@@ -824,15 +829,16 @@ static void i915_capture_error_state(struct drm_device *dev)
 	}
 	i915_gem_record_fences(dev, error);
 
-	/* Record the active batchbuffers */
-	for (i = 0; i < I915_NUM_RINGS; i++)
+	/* Record the active batch and ring buffers */
+	for (i = 0; i < I915_NUM_RINGS; i++) {
 		error->batchbuffer[i] =
 			i915_error_first_batchbuffer(dev_priv,
 						     &dev_priv->ring[i]);
 
-	/* Record the ringbuffer */
-	error->ringbuffer = i915_error_object_create(dev_priv,
-						     dev_priv->ring[RCS].obj);
+		error->ringbuffer[i] =
+			i915_error_object_create(dev_priv,
+						 dev_priv->ring[i].obj);
+	}
 
 	/* Record buffers on the active and pinned lists. */
 	error->active_bo = NULL;