Revert to an L3 non-hash model, for performance reasons.
v2:
- Place the WA name above the actual change
- Improve the register naming
v3:
- Rebased
- Renamed to Wa_1604223664
v4: Rebased on top of the WA refactoring
v5:
- Added References (Mika)
- Fixed wrong mask and value (Mika)
- Do not apply together with another WA for the same
register (not worth the hassle)
v6:
- Rebased
- C, not lisp (Chris)
References: HSDES#1604223664
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 6 ++++++
drivers/gpu/drm/i915/intel_workarounds.c | 10 ++++++++++
2 files changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c9c2ad5..81f1a8c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8253,6 +8253,12 @@ enum {
#define GEN8_GARBCNTL _MMIO(0xB004)
#define GEN9_GAPS_TSV_CREDIT_DISABLE (1 << 7)
#define GEN11_ARBITRATION_PRIO_ORDER_MASK (0x3f << 22)
+#define GEN11_HASH_CTRL_EXCL_MASK (0x7f << 0)
+#define GEN11_HASH_CTRL_EXCL_BIT0 (1 << 0)
+
+#define GEN11_GLBLINVL _MMIO(0xB404)
+#define GEN11_BANK_HASH_ADDR_EXCL_MASK (0x7f << 5)
+#define GEN11_BANK_HASH_ADDR_EXCL_BIT0 (1 << 5)
#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 44ae0b4..3b03729 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -705,6 +705,16 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
*/
I915_WRITE(GEN8_GARBCNTL, I915_READ(GEN8_GARBCNTL) |
GEN11_ARBITRATION_PRIO_ORDER_MASK);
+
+ /* Wa_1604223664:icl
+ * Formerly known as WaL3BankAddressHashing
+ */
+ I915_WRITE(GEN8_GARBCNTL,
+ (I915_READ(GEN8_GARBCNTL) & ~GEN11_HASH_CTRL_EXCL_MASK) |
+ GEN11_HASH_CTRL_EXCL_BIT0);
+ I915_WRITE(GEN11_GLBLINVL,
+ (I915_READ(GEN11_GLBLINVL) & ~GEN11_BANK_HASH_ADDR_EXCL_MASK) |
+ GEN11_BANK_HASH_ADDR_EXCL_BIT0);
}
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
--
1.9.1
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