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drm/amdgpu: Add MB_REQ_MSG_READY_TO_RESET response when VF get FLR notification.

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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 <Jiange.Zhao@amd.com>
Signed-off-by: Peng Ju Zhou <PengJu.Zhou@amd.com>
Reviewed-by: Emily.Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jiange Zhao 2021-03-19 10:32:04 +08:00 committed by Alex Deucher
parent 1d0e622f8d
commit 3e183e2fae
2 changed files with 4 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
View File

@ -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;

3
drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h
View File

@ -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 {