drm/amdgpu/sdma: handle paging queues in amdgpu_sdma_reset_engine()

[ Upstream commit 9a9e87d ]

Need to properly start and stop paging queues if they are present.

This is not an issue today since we don't support a paging queue
on any chips with queue reset.

Fixes: b22659d ("drm/amdgpu: switch amdgpu_sdma_reset_engine to use the new sdma function pointers")
Reviewed-by: Jesse Zhang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: alexdeucher

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

@@ -597,8 +597,11 @@ int amdgpu_sdma_reset_engine(struct amdgpu_device *adev, uint32_t instance_id)
 		page_sched_stopped = true;
 	}
 
-	if (sdma_instance->funcs->stop_kernel_queue)
+	if (sdma_instance->funcs->stop_kernel_queue) {
 		sdma_instance->funcs->stop_kernel_queue(gfx_ring);
+		if (adev->sdma.has_page_queue)
+			sdma_instance->funcs->stop_kernel_queue(page_ring);
+	}
 
 	/* Perform the SDMA reset for the specified instance */
 	ret = amdgpu_sdma_soft_reset(adev, instance_id);
@@ -607,8 +610,11 @@ int amdgpu_sdma_reset_engine(struct amdgpu_device *adev, uint32_t instance_id)
 		goto exit;
 	}
 
-	if (sdma_instance->funcs->start_kernel_queue)
+	if (sdma_instance->funcs->start_kernel_queue) {
 		sdma_instance->funcs->start_kernel_queue(gfx_ring);
+		if (adev->sdma.has_page_queue)
+			sdma_instance->funcs->start_kernel_queue(page_ring);
+	}
 
 exit:
 	/* Restart the scheduler's work queue for the GFX and page rings