From a3a09142f43c456fff7ddbc0ac867af8979a368c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 25 Jul 2019 11:44:59 -0500 Subject: [PATCH] drm/amdgpu: put the SMC into the proper state on reset/unload When doing a GPU reset or unloading the driver, we need to put the SMU into the apprpriate state for the re-init after the reset or unload to reliably work. I don't think this is necessary for BACO because the SMU actually controls the BACO state to it needs to be active. For suspend (S3), the asic is put into D3 so the SMU would be powered down so I don't think we need to put the SMU into any special state. Reviewed-by: Evan Quan Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 27 ++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 ++ 3 files changed, 30 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 5cbed256f006..c87dfdb8aedb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -990,6 +990,7 @@ struct amdgpu_device { /* record last mm index being written through WREG32*/ unsigned long last_mm_index; bool in_gpu_reset; + enum pp_mp1_state mp1_state; struct mutex lock_reset; struct amdgpu_doorbell_index doorbell_index; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 14a9169446f5..2081649f49ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2175,6 +2175,21 @@ static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev) DRM_ERROR("suspend of IP block <%s> failed %d\n", adev->ip_blocks[i].version->funcs->name, r); } + /* handle putting the SMC in the appropriate state */ + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) { + if (is_support_sw_smu(adev)) { + /* todo */ + } else if (adev->powerplay.pp_funcs && + adev->powerplay.pp_funcs->set_mp1_state) { + r = adev->powerplay.pp_funcs->set_mp1_state( + adev->powerplay.pp_handle, + adev->mp1_state); + if (r) { + DRM_ERROR("SMC failed to set mp1 state %d, %d\n", + adev->mp1_state, r); + } + } + } } return 0; @@ -3640,6 +3655,17 @@ static bool amdgpu_device_lock_adev(struct amdgpu_device *adev, bool trylock) atomic_inc(&adev->gpu_reset_counter); adev->in_gpu_reset = 1; + switch (amdgpu_asic_reset_method(adev)) { + case AMD_RESET_METHOD_MODE1: + adev->mp1_state = PP_MP1_STATE_SHUTDOWN; + break; + case AMD_RESET_METHOD_MODE2: + adev->mp1_state = PP_MP1_STATE_RESET; + break; + default: + adev->mp1_state = PP_MP1_STATE_NONE; + break; + } /* Block kfd: SRIOV would do it separately */ if (!amdgpu_sriov_vf(adev)) amdgpu_amdkfd_pre_reset(adev); @@ -3653,6 +3679,7 @@ static void amdgpu_device_unlock_adev(struct amdgpu_device *adev) if (!amdgpu_sriov_vf(adev)) amdgpu_amdkfd_post_reset(adev); amdgpu_vf_error_trans_all(adev); + adev->mp1_state = PP_MP1_STATE_NONE; adev->in_gpu_reset = 0; mutex_unlock(&adev->lock_reset); } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 56f807757d2c..e3e09e6d7f42 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -1096,7 +1096,9 @@ amdgpu_pci_shutdown(struct pci_dev *pdev) * unfortunately we can't detect certain * hypervisors so just do this all the time. */ + adev->mp1_state = PP_MP1_STATE_UNLOAD; amdgpu_device_ip_suspend(adev); + adev->mp1_state = PP_MP1_STATE_NONE; } static int amdgpu_pmops_suspend(struct device *dev) -- 2.30.2