[PATCH AUTOSEL 5.2 22/23] drm/i915: Add whitelist workarounds for ICL

[Sasha Levin]

From: John Harrison <John.C.Harrison@xxxxxxxxx>

[ Upstream commit 7b3d406310983a89ed7a1ecdd115efbe12b0ded5 ]

Updated whitelist table for ICL.

v2: Reduce changes to just those required for media driver until
the selftest can be updated to support the new features of the
other entries.

Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Signed-off-by: Robert M. Fosha <robert.m.fosha@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618010108.27499-4-John.C.Harrison@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_workarounds.c | 38 +++++++++++++++++-------
 1 file changed, 27 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index be3688908f0ce..efea5a18fa6db 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -1097,17 +1097,33 @@ static void icl_whitelist_build(struct intel_engine_cs *engine)
 {
 	struct i915_wa_list *w = &engine->whitelist;
 
-	if (engine->class != RENDER_CLASS)
-		return;
-
-	/* WaAllowUMDToModifyHalfSliceChicken7:icl */
-	whitelist_reg(w, GEN9_HALF_SLICE_CHICKEN7);
-
-	/* WaAllowUMDToModifySamplerMode:icl */
-	whitelist_reg(w, GEN10_SAMPLER_MODE);
-
-	/* WaEnableStateCacheRedirectToCS:icl */
-	whitelist_reg(w, GEN9_SLICE_COMMON_ECO_CHICKEN1);
+	switch (engine->class) {
+	case RENDER_CLASS:
+		/* WaAllowUMDToModifyHalfSliceChicken7:icl */
+		whitelist_reg(w, GEN9_HALF_SLICE_CHICKEN7);
+
+		/* WaAllowUMDToModifySamplerMode:icl */
+		whitelist_reg(w, GEN10_SAMPLER_MODE);
+
+		/* WaEnableStateCacheRedirectToCS:icl */
+		whitelist_reg(w, GEN9_SLICE_COMMON_ECO_CHICKEN1);
+		break;
+
+	case VIDEO_DECODE_CLASS:
+		/* hucStatusRegOffset */
+		whitelist_reg_ext(w, _MMIO(0x2000 + engine->mmio_base),
+				  RING_FORCE_TO_NONPRIV_RD);
+		/* hucUKernelHdrInfoRegOffset */
+		whitelist_reg_ext(w, _MMIO(0x2014 + engine->mmio_base),
+				  RING_FORCE_TO_NONPRIV_RD);
+		/* hucStatus2RegOffset */
+		whitelist_reg_ext(w, _MMIO(0x23B0 + engine->mmio_base),
+				  RING_FORCE_TO_NONPRIV_RD);
+		break;
+
+	default:
+		break;
+	}
 }
 
 void intel_engine_init_whitelist(struct intel_engine_cs *engine)
-- 
2.20.1