From 31edd7c0a813d9dc778fcb5da1eb8202c140dc4d Mon Sep 17 00:00:00 2001
From: Tiecheng Zhou <Tiecheng.Zhou@amd.com>
Date: Fri, 7 Dec 2018 09:11:35 +0800
Subject: [PATCH] drm/amdgpu: bypass RLC init under sriov for Tonga (v2)
RLC will go wrong in soft_reset under sriov
Workaroound: only need to init RLC csb, and skip RLC stop, reset, start
this is because host-driver has already done full initialization on RLC
v2: squash in build fix
Signed-off-by: Tiecehng Zhou <Tiecheng.Zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 1454fc306783..08f443fa7772 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4068,6 +4068,11 @@ static void gfx_v8_0_rlc_start(struct amdgpu_device *adev)
static int gfx_v8_0_rlc_resume(struct amdgpu_device *adev)
{
+ if (amdgpu_sriov_vf(adev)) {
+ gfx_v8_0_init_csb(adev);
+ return 0;
+ }
+
adev->gfx.rlc.funcs->stop(adev);
adev->gfx.rlc.funcs->reset(adev);
gfx_v8_0_init_pg(adev);
--
2.30.9