[PATCH 70/97] drm/i915/guc: Enable the timer expired interrupt for GuC

[Matthew Brost]

The GuC can implement execution qunatums, detect hung contexts and
other such things but it requires the timer expired interrupt to do so.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
CC: John Harrison <John.C.Harrison at Intel.com>
---
 drivers/gpu/drm/i915/gt/intel_rps.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 97cab1b99871..0bf86d54adb6 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -1877,6 +1877,10 @@ void intel_rps_init(struct intel_rps *rps)
 
 	if (INTEL_GEN(i915) >= 8 && INTEL_GEN(i915) < 11)
 		rps->pm_intrmsk_mbz |= GEN8_PMINTR_DISABLE_REDIRECT_TO_GUC;
+
+	/* GuC needs ARAT expired interrupt unmasked */
+	if (intel_uc_uses_guc_submission(&rps_to_gt(rps)->uc))
+		rps->pm_intrmsk_mbz |= ARAT_EXPIRED_INTRMSK;
 }
 
 void intel_rps_sanitize(struct intel_rps *rps)
-- 
2.28.0