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| author | Yifan Zha <Yifan.Zha@amd.com> | 2023-03-06 14:54:05 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-03-15 18:45:26 -0400 |
| commit | 057e335c71361063e173381cecf2e8487ec8b552 (patch) | |
| tree | 048061d6d65b6fa4f9fdfc218a126efd67b1b675 | |
| parent | 5f3401eeb064fab5ce50728cce46532cce7a85c5 (diff) | |
| download | lwn-057e335c71361063e173381cecf2e8487ec8b552.tar.gz lwn-057e335c71361063e173381cecf2e8487ec8b552.zip | |
drm/amdgpu: Init MMVM_CONTEXTS_DISABLE in gmc11 golden setting under SRIOV
[Why]
If disable the mmhub vm contexts(set MMVM_CONTEXTS_DISABLE to 0xffff),
driver loading failed on vf due to fence fallback timer expired on all rings.
FLR cannot reset MMVM_CONTEXTS_DISABLE.
So this vf can not be recovered anymore unless trigger a whole gpu reset.
[How]
Under SRIOV, init MMVM_CONTEXTS_DISABLE in gmc11 golden register setting.
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Reviewed-by: Horace Chen <Horace.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c | 3 |
3 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h index f1773abd5e1a..232523e3e270 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h @@ -104,6 +104,8 @@ struct amdgpu_vmhub { uint32_t vm_cntx_cntl_vm_fault; uint32_t vm_l2_bank_select_reserved_cid2; + uint32_t vm_contexts_disable; + const struct amdgpu_vmhub_funcs *vmhub_funcs; }; diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c index 1c585cc24857..fad199ed15f3 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c @@ -862,6 +862,12 @@ static int gmc_v11_0_sw_fini(void *handle) static void gmc_v11_0_init_golden_registers(struct amdgpu_device *adev) { + if (amdgpu_sriov_vf(adev)) { + struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_MMHUB_0]; + + WREG32(hub->vm_contexts_disable, 0); + return; + } } /** diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c index 164948c50ac3..17a792616979 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c @@ -517,6 +517,9 @@ static void mmhub_v3_0_init(struct amdgpu_device *adev) hub->vm_l2_bank_select_reserved_cid2 = SOC15_REG_OFFSET(MMHUB, 0, regMMVM_L2_BANK_SELECT_RESERVED_CID2); + hub->vm_contexts_disable = + SOC15_REG_OFFSET(MMHUB, 0, regMMVM_CONTEXTS_DISABLE); + hub->vmhub_funcs = &mmhub_v3_0_vmhub_funcs; } |