From c836d78f9eac9b79b871ca1c2cee8dbb1dd12e5c Mon Sep 17 00:00:00 2001
From: Jiange Zhao <Jiange.Zhao@amd.com>
Date: Fri, 19 Mar 2021 10:32:04 +0800
Subject: drm/amdgpu: Add MB_REQ_MSG_READY_TO_RESET response when VF get FLR
notification.
Git-commit: 3e183e2faea97fb284f82861286de09aa16e3630
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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 {
--
2.38.1