Reviewed-by: Emily.Deng
>-Original Message-
>From: amd-gfx On Behalf Of Zhou,
>Peng Ju
>Sent: Thursday, August 12, 2021 4:28 PM
>To: Zhou, Peng Ju ; amd-gfx@lists.freedesktop.org
>Cc: Zhao, Jiange
>Subject: RE: [PATCH] drm/amdgpu: Add MB_REQ_MSG_READY_TO_RESET
>response when VF get FLR notification.
>
>[AMD Official Use Only]
>
>ping
>
>> -Original Message-
>> From: Peng Ju Zhou
>> Sent: Monday, August 9, 2021 5:37 PM
>> To: amd-gfx@lists.freedesktop.org
>> Cc: Zhao, Jiange ; Zhou, Peng Ju
>>
>> Subject: [PATCH] drm/amdgpu: Add MB_REQ_MSG_READY_TO_RESET
>response
>> when VF get FLR notification.
>>
>> From: Jiange Zhao
>>
>> 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
>> ---
>> 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 b48e68f46a5c..a35e6d87e537 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 9f5808616174..73887b0aa1d6 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 {
>> --
>> 2.17.1
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