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* [PATCH] drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear
@ 2016-06-03 11:40 Arun Siluvery
  2016-06-03 12:04 ` ✗ Ro.CI.BAT: failure for " Patchwork
                   ` (5 more replies)
  0 siblings, 6 replies; 10+ messages in thread
From: Arun Siluvery @ 2016-06-03 11:40 UTC (permalink / raw)
  To: intel-gfx

Kernel only need to add a register to HW whitelist, required for a
preemption related issue.

Reference: HSD#2131039
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h         | 1 +
 drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e307725..1f6040a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6072,6 +6072,7 @@ enum skl_disp_power_wells {
 #define  GEN9_TSG_BARRIER_ACK_DISABLE		(1<<8)
 
 #define GEN9_CS_DEBUG_MODE1		_MMIO(0x20ec)
+#define GEN9_CTX_PREEMPT_REG		_MMIO(0x2248)
 #define GEN8_CS_CHICKEN1		_MMIO(0x2580)
 
 /* GEN7 chicken */
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 8d35a39..1f9d3a4 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -987,6 +987,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
 	I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
 				    GEN8_LQSC_FLUSH_COHERENT_LINES));
 
+	/* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt */
+	ret= wa_ring_whitelist_reg(engine, GEN9_CTX_PREEMPT_REG);
+	if (ret)
+		return ret;
+
 	/* WaEnablePreemptionGranularityControlByUMD:skl,bxt */
 	ret= wa_ring_whitelist_reg(engine, GEN8_CS_CHICKEN1);
 	if (ret)
-- 
1.9.1

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^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2017-11-08 13:03 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-06-03 11:40 [PATCH] drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear Arun Siluvery
2016-06-03 12:04 ` ✗ Ro.CI.BAT: failure for " Patchwork
2016-06-03 12:15 ` Patchwork
2016-06-03 23:34 ` [PATCH] " Jeff McGee
2016-06-06  8:52 ` [RESEND_FOR_CI] " Arun Siluvery
2016-06-06  9:28 ` ✗ Ro.CI.BAT: warning for drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear (rev2) Patchwork
2016-06-06 10:03   ` Arun Siluvery
2016-06-06 12:05     ` Tvrtko Ursulin
2017-11-01 22:44 ` [PATCH] drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear Chris Wilson
2017-11-08 13:03   ` Joonas Lahtinen

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