From 057e335c71361063e173381cecf2e8487ec8b552 Mon Sep 17 00:00:00 2001 From: Yifan Zha Date: Mon, 6 Mar 2023 14:54:05 +0800 Subject: 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 Reviewed-by: Horace Chen Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 2 ++ drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 6 ++++++ drivers/gpu/drm/amd/amdgpu/mmhub_v3_0.c | 3 +++ 3 files changed, 11 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu') 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; } -- cgit v1.2.3-70-g09d2