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drm/i915: Split up hangcheck phases

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In order to simplify hangcheck state keeping, split hangcheck
per engine loop in three phases: state load, action, state save.

Add few more hangcheck actions to separate between seqno, head
and subunit movements. This helps to gather all the hangcheck
actions under a single switch umbrella.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
This commit is contained in:
Mika Kuoppala
2016-11-16 17:20:29 +02:00
committed by Mika Kuoppala
parent b2251c0820
commit 6e16d028e4
3 changed files with 145 additions and 106 deletions
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4
drivers/gpu/drm/i915/intel_ringbuffer.h
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@@ -67,7 +67,9 @@ struct intel_hw_status_page {
enum intel_engine_hangcheck_action {
HANGCHECK_IDLE = 0,
HANGCHECK_WAIT,
HANGCHECK_ACTIVE,
HANGCHECK_ACTIVE_SEQNO,
HANGCHECK_ACTIVE_HEAD,
HANGCHECK_ACTIVE_SUBUNITS,
HANGCHECK_KICK,
HANGCHECK_HUNG,
};