drm/i915/guc: Enable the timer expired interrupt for GuC

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@intel.com>
CC: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727002348.97202-15-matthew.brost@intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 06e9a8ed4e03c95cc190bb9e7a87b01d5af17177..0c8e7f2b06f00ac0d46fac17608fda682e0917d7 100644 (file)
--- 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)