On 04/26/2018 08:27 AM, Mika Kuoppala wrote:
Oscar Mateo <oscar.mateo@xxxxxxxxx> writes:
The default GAPZ arbitrer priority value at power-on has been found
to be incorrect.
v2: Now renamed to Wa_1405543622
v3: Rebased on top of the WA refactoring
I have suggested that when implementing workarounds,
authors, for example, add
References: HSDES#1405542622, HSDES#1207131207
The thing is, nowadays, the name of the WA itself *is* the HSDES number
(e.g. this is Wa_1405543622 because it is documented in
HSDES#1405543622). At least for hardware workarounds. But I have no
problem adding the "References" tag as well, as long as we have consensus.
as a first tagline to ease up the review.
I do that again :) No need to resend,
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Thanks!
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 5 +++--
drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4b7e6bc..a6b1f85 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8215,8 +8215,9 @@ enum {
#define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1<<4)
#define GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE (1<<6)
-#define GEN8_GARBCNTL _MMIO(0xB004)
-#define GEN9_GAPS_TSV_CREDIT_DISABLE (1<<7)
+#define GEN8_GARBCNTL _MMIO(0xB004)
+#define GEN9_GAPS_TSV_CREDIT_DISABLE (1 << 7)
+#define GEN11_ARBITRATION_PRIO_ORDER_MASK (0x3f << 22)
#define GEN10_DFR_RATIO_EN_AND_CHICKEN _MMIO(0x9550)
#define DFR_DISABLE (1 << 9)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 60a5b1d..ffd27a1 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -703,6 +703,12 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
/* WaPipelineFlushCoherentLines:icl */
I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
GEN8_LQSC_FLUSH_COHERENT_LINES));
+
+ /* Wa_1405543622:icl
+ * Formerly known as WaGAPZPriorityScheme
+ */
+ I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
+ GEN11_ARBITRATION_PRIO_ORDER_MASK));
}
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
--
1.9.1
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