From 3e183e2faea97fb284f82861286de09aa16e3630 Mon Sep 17 00:00:00 2001 From: Jiange Zhao Date: Fri, 19 Mar 2021 10:32:04 +0800 Subject: [PATCH] drm/amdgpu: Add MB_REQ_MSG_READY_TO_RESET response when VF get FLR notification. When guest received FLR notification from host, it would lock adapter into reset state. There will be no more job submission and hardware access after that. Then it should send a response to host that it has prepared for host reset. Signed-off-by: Jiange Zhao Signed-off-by: Peng Ju Zhou Reviewed-by: Emily.Deng Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 2 ++ drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c index b48e68f..a35e6d8 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c @@ -287,6 +287,8 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work) amdgpu_virt_fini_data_exchange(adev); atomic_set(&adev->in_gpu_reset, 1); + xgpu_nv_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0); + do { if (xgpu_nv_mailbox_peek_msg(adev) == IDH_FLR_NOTIFICATION_CMPL) goto flr_done; diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h index 9f58086..73887b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h @@ -37,7 +37,8 @@ enum idh_request { IDH_REQ_GPU_RESET_ACCESS, IDH_REQ_GPU_INIT_DATA, - IDH_LOG_VF_ERROR = 200, + IDH_LOG_VF_ERROR = 200, + IDH_READY_TO_RESET = 201, }; enum idh_event { -- 2.7.4