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drm/amdgpu: Enable PDE.C usage on GFX 12.1

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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>
This commit is contained in:
Mukul Joshi
2025-09-05 22:33:15 -04:00
committed by Alex Deucher
parent b8c27208b2
commit 3a338bb114
1 changed files with 4 additions and 12 deletions
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16
drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c
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@@ -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;