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Commit 9d91a1bf authored by Sagar Arun Kamble's avatar Sagar Arun Kamble Committed by Daniel Vetter
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drm/i915/guc: Don't forward flip interrupts to GuC 



Due to flip interrupts GuC stays awake always and GT does not enter
RC6. Do not route those interrupts to GuC for now. Driver won't touch
DE_GUCRMR register and leave it as what default value.

Signed-off-by: default avatarSagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: default avatarAlex Dai <yu.dai@intel.com>
Reviewed-by: default avatarTom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 923c1241

drivers/gpu/drm/i915/intel_guc_loader.c

+0 −10
Original line number Diff line number Diff line
@@ -90,9 +90,6 @@ static void direct_interrupts_to_host(struct drm_i915_private *dev_priv) 
	for_each_ring(ring, dev_priv, i)

		I915_WRITE(RING_MODE_GEN7(ring), irqs);



	/* tell DE to send nothing to GuC */

	I915_WRITE(DE_GUCRMR, ~0);



	/* route all GT interrupts to the host */

	I915_WRITE(GUC_BCS_RCS_IER, 0);

	I915_WRITE(GUC_VCS2_VCS1_IER, 0);
@@ -110,13 +107,6 @@ 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);



	/* route USER_INTERRUPT to Host, all others are sent to GuC. */

	irqs = GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT |

	       GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT;