On 6/24/2021 00:05, Matthew Brost wrote:
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@xxxxxxxxx>
CC: John Harrison <John.C.Harrison@xxxxxxxxx>
Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx>
---
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 06e9a8ed4e03..0c8e7f2b06f0 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 (GRAPHICS_VER(i915) >= 8 && GRAPHICS_VER(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)
