Due to flip interrupts routed to GuC, GuC stays awake always and GT does not
enter RC6.
GuC firmware should re-direct to GuC those interrupts that it can handle.
v2: Commit message change and routing all interrupts to host. (Tom)
Cc: Alex Dai <yu....@intel.com>
Cc: Tom O'Rourke <Tom.O'rou...@intel.com>
Cc: Akash Goel <akash.g...@intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kam...@intel.com>
---
drivers/gpu/drm/i915/intel_guc_loader.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c
b/drivers/gpu/drm/i915/intel_guc_loader.c
index 5eafd31..0b047c4 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -110,12 +110,8 @@ static void direct_interrupts_to_guc(struct
drm_i915_private *dev_priv)
for_each_ring(ring, dev_priv, i)
I915_WRITE(RING_MODE_GEN7(ring), irqs);
- /* tell DE to send (all) flip_done to GuC */
- irqs = DERRMR_PIPEA_PRI_FLIP_DONE | DERRMR_PIPEA_SPR_FLIP_DONE |
- DERRMR_PIPEB_PRI_FLIP_DONE | DERRMR_PIPEB_SPR_FLIP_DONE |
- DERRMR_PIPEC_PRI_FLIP_DONE | DERRMR_PIPEC_SPR_FLIP_DONE;
- /* Unmasked bits will cause GuC response message to be sent */
- I915_WRITE(DE_GUCRMR, ~irqs);
+ /* tell DE to send nothing to GuC */
+ I915_WRITE(DE_GUCRMR, ~0);
/* route USER_INTERRUPT to Host, all others are sent to GuC. */
irqs = GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
--
1.9.1
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