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From 976070d794c933df909fc6a14c0ac5bf3b3f3283 Mon Sep 17 00:00:00 2001
From: Trigger Huang <Trigger.Huang@amd.com>
Date: Tue, 30 Apr 2019 16:23:29 +0800
Subject: [PATCH 1866/2940] drm/amdgpu: Add IDH_QUERY_ALIVE event for SR-IOV
SR-IOV host side will send IDH_QUERY_ALIVE to guest VM to check
if this guest VM is still alive (not destroyed). The only thing
guest KMD need to do is to send ACK back to host.
Signed-off-by: Trigger Huang <Trigger.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 3 +++
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
index 089952a1e6b0..64a7b1fb1d1b 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -372,6 +372,9 @@ static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev,
if (amdgpu_sriov_runtime(adev))
schedule_work(&adev->virt.flr_work);
break;
+ case IDH_QUERY_ALIVE:
+ xgpu_ai_mailbox_send_ack(adev);
+ break;
/* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
* it byfar since that polling thread will handle it,
* other msg like flr complete is not handled here.
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
index 39d151b79153..077e91a33d62 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
@@ -49,6 +49,7 @@ enum idh_event {
IDH_FLR_NOTIFICATION_CMPL,
IDH_SUCCESS,
IDH_FAIL,
+ IDH_QUERY_ALIVE,
IDH_EVENT_MAX
};
--
2.17.1
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