drm/amdgpu: create mqd for gfx queues on navi10

mqd is the memory queue descriptor for gfx and compute.

Signed-off-by: Hawking Zhang <[e-mail]>
Reviewed-by: Jack Xiao <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Acked-by: Felix Kuehling <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

···
 				dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
 	}
 
+	if (adev->asic_type == CHIP_NAVI10 && amdgpu_async_gfx_ring) {
+		/* create MQD for each KGQ */
+		for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
+			ring = &adev->gfx.gfx_ring[i];
+			if (!ring->mqd_obj) {
+				r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
+							    AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
+							    &ring->mqd_gpu_addr, &ring->mqd_ptr);
+				if (r) {
+					dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
+					return r;
+				}
+
+				/* prepare MQD backup */
+				adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
+				if (!adev->gfx.me.mqd_backup[i])
+					dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
+			}
+		}
+	}
+
 	/* create MQD for each KCQ */
 	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
 		ring = &adev->gfx.compute_ring[i];
···
 						    AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
 						    &ring->mqd_gpu_addr, &ring->mqd_ptr);
 			if (r) {
-				dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
+				dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
 				return r;
 			}
 
···
 	struct amdgpu_ring *ring = NULL;
 	int i;
 
+	if (adev->asic_type == CHIP_NAVI10 && amdgpu_async_gfx_ring) {
+		for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
+			ring = &adev->gfx.gfx_ring[i];
+			kfree(adev->gfx.me.mqd_backup[i]);
+			amdgpu_bo_free_kernel(&ring->mqd_obj,
+					      &ring->mqd_gpu_addr,
+					      &ring->mqd_ptr);
+		}
+	}
+
 	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
 		ring = &adev->gfx.compute_ring[i];
 		kfree(adev->gfx.mec.mqd_backup[i]);
···
 	}
 
 	ring = &adev->gfx.kiq.ring;
+	if (adev->asic_type == CHIP_NAVI10 && amdgpu_async_gfx_ring)
+		kfree(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS]);
 	kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
 	amdgpu_bo_free_kernel(&ring->mqd_obj,
 			      &ring->mqd_gpu_addr,