[PATCH 5/7] drm/amdgpu: Enable PDE.C usage on GFX 12.1

[Alex Deucher <alexander.deucher@amd.com>]

From: Mukul Joshi <mukul.joshi@amd.com>

On GFX 12.1, PDE.C is ignored if (PDE|PTE)_REQUEST_PHYSICAL
is not setup in the GCVM control register. Always set this
field to enable PDE.C usage.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c
index 8ec0a14d3203b..4c59da7f2ccb1 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c
@@ -322,18 +322,10 @@ static void gfxhub_v12_1_xcc_init_cache_regs(struct amdgpu_device *adev,
 		WREG32_SOC15_RLC(GC, GET_INST(GC, i), regGCVM_L2_CNTL3, tmp);
 
 		tmp = regGCVM_L2_CNTL4_DEFAULT;
-		/* For AMD APP APUs setup WC memory */
-		if (adev->gmc.xgmi.connected_to_cpu || adev->gmc.is_app_apu) {
-			tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
-					    VMC_TAP_PDE_REQUEST_PHYSICAL, 1);
-			tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
-					    VMC_TAP_PTE_REQUEST_PHYSICAL, 1);
-		} else {
-			tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
-					    VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
-			tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
-					    VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
-		}
+		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
+				    VMC_TAP_PDE_REQUEST_PHYSICAL, 1);
+		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4,
+				    VMC_TAP_PTE_REQUEST_PHYSICAL, 1);
 		WREG32_SOC15_RLC(GC, GET_INST(GC, i), regGCVM_L2_CNTL4, tmp);
 
 		tmp = regGCVM_L2_CNTL5_DEFAULT;
-- 
2.51.1