From: Jiange Zhao <Jiange.Zhao@xxxxxxx>
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@xxxxxxx>
Signed-off-by: Peng Ju Zhou <PengJu.Zhou@xxxxxxx>
---
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
