[Intel-gfx] [PATCH v3 4/4] drm/i915/icl: WaAllowUMDToModifySamplerMode

[Radhakrishna Sripada]

From: Oscar Mateo <oscar.mateo at intel.com>

Required for Bindless samplers.
Userspace consumer: mesa

V2: Rebase
V3: Update commit message

Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h          | 2 ++
 drivers/gpu/drm/i915/intel_workarounds.c | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f76fa13a12a2..050fedb4fc81 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8648,6 +8648,8 @@ enum {
 #define GAMW_ECO_DEV_RW_IA_REG			_MMIO(0x4080)
 #define   GAMW_ECO_DEV_CTX_RELOAD_DISABLE	(1 << 7)
 
+#define GEN10_SAMPLER_MODE		_MMIO(0xE18C)
+
 /* IVYBRIDGE DPF */
 #define GEN7_L3CDERRST1(slice)		_MMIO(0xB008 + (slice) * 0x200) /* L3CD Error Status 1 */
 #define   GEN7_L3CDERRST1_ROW_MASK	(0x7ff << 14)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 896874278852..d7176213e3ce 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -1018,6 +1018,9 @@ static void icl_whitelist_build(struct whitelist *w)
 {
 	/* WaAllowUMDToModifyHalfSliceChicken7:icl */
 	whitelist_reg(w, GEN9_HALF_SLICE_CHICKEN7);
+
+	/* WaAllowUMDToModifySamplerMode:icl */
+	whitelist_reg(w, GEN10_SAMPLER_MODE);
 }
 
 static struct whitelist *whitelist_build(struct intel_engine_cs *engine,
-- 
2.9.3