Commit a647828a authored by Niu,Bing's avatar Niu,Bing Committed by Daniel Vetter

drm/i915: Also perform gpu reset under execlist mode.

It is found that i915 will not reset gpu under execlist mode when
unload module. that will lead to some issues when unload/load module
with different submission mode. e.g. from execlist mode to ring
buffer mode via loading/unloading i915. Because HW is not in a reset
state and registers are not clean under such condition.
Signed-off-by: default avatarNiu,Bing <bing.niu@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 9e000847
......@@ -5196,6 +5196,14 @@ i915_gem_cleanup_ringbuffer(struct drm_device *dev)
for_each_ring(ring, dev_priv, i)
dev_priv->gt.cleanup_ring(ring);
if (i915.enable_execlists)
/*
* Neither the BIOS, ourselves or any other kernel
* expects the system to be in execlists mode on startup,
* so we need to reset the GPU back to legacy mode.
*/
intel_gpu_reset(dev);
}
static void
......
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