diff options
| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2026-01-17 11:01:20 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-03-17 17:31:55 +0300 |
| commit | cc692ae3e10ea9c84e280a01a325609af69455cf (patch) | |
| tree | f9233b0d4c5fee9777de5fb48d26cde4a07c8f47 | |
| parent | 5abc46d134995715b69ed0a640a31ed43a1486bc (diff) | |
| download | linux-cc692ae3e10ea9c84e280a01a325609af69455cf.tar.xz | |
drm/amdgpu: Limit physical transcation mode to A + A only
Only enable page table walker to snoop CPU cache
on A + A platform
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c index 4aa004ee2c4d..6a6f1707cb53 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c +++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v12_1.c @@ -325,10 +325,18 @@ 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; - 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); + if (adev->gmc.xgmi.connected_to_cpu) { + 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); + } + WREG32_SOC15_RLC(GC, GET_INST(GC, i), regGCVM_L2_CNTL4, tmp); tmp = regGCVM_L2_CNTL5_DEFAULT; |