Commit 2ed53a94 authored by Chris Wilson's avatar Chris Wilson

drm/i915: On GPU reset, set the HWS breadcrumb to the last seqno

After the GPU reset and we discard all of the incomplete requests, mark
the GPU as having advanced to the last_submitted_seqno (as having
completed the requests and ready for fresh work). The impact of this is
negligible, as all the requests will be considered completed by this
point, it just brings the HWS into line with expectations for external
viewers.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460010558-10705-2-git-send-email-chris@chris-wilson.co.uk
parent 14fd0d6d
...@@ -2882,6 +2882,8 @@ static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv, ...@@ -2882,6 +2882,8 @@ static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
buffer->last_retired_head = buffer->tail; buffer->last_retired_head = buffer->tail;
intel_ring_update_space(buffer); intel_ring_update_space(buffer);
} }
intel_ring_init_seqno(engine, engine->last_submitted_seqno);
} }
void i915_gem_reset(struct drm_device *dev) void i915_gem_reset(struct drm_device *dev)
......
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