[Intel-gfx] [PATCH v2] drm/i915/xelp: Add Wa_1806527549

[Gustavo Sousa]

Workaround to be applied to platforms using XE_LP graphics.

BSpec: 52890
Signed-off-by: Gustavo Sousa <gustavo.so...@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_regs.h     | 1 +
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h 
b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index 36d95b79022c..23844ba7e824 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -443,6 +443,7 @@
 #define HIZ_CHICKEN                            _MMIO(0x7018)
 #define   CHV_HZ_8X8_MODE_IN_1X                        REG_BIT(15)
 #define   DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE REG_BIT(14)
+#define   HZ_DEPTH_TEST_LE_GE_OPT_DISABLE      REG_BIT(13)
 #define   BDW_HIZ_POWER_COMPILER_CLOCK_GATING_DISABLE  REG_BIT(3)
 
 #define GEN8_L3CNTLREG                         _MMIO(0x7034)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c 
b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 63e1e6becf34..2a35e7e66625 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -660,6 +660,8 @@ static void gen12_ctx_gt_tuning_init(struct intel_engine_cs 
*engine,
 static void gen12_ctx_workarounds_init(struct intel_engine_cs *engine,
                                       struct i915_wa_list *wal)
 {
+       struct drm_i915_private *i915 = engine->i915;
+
        gen12_ctx_gt_tuning_init(engine, wal);
 
        /*
@@ -693,6 +695,10 @@ static void gen12_ctx_workarounds_init(struct 
intel_engine_cs *engine,
               FF_MODE2_GS_TIMER_MASK,
               FF_MODE2_GS_TIMER_224,
               0, false);
+
+       if (!IS_DG1(i915))
+               /* Wa_1806527549 */
+               wa_masked_en(wal, HIZ_CHICKEN, HZ_DEPTH_TEST_LE_GE_OPT_DISABLE);
 }
 
 static void dg1_ctx_workarounds_init(struct intel_engine_cs *engine,
-- 
2.38.0