From aa978594cf7fa0ad91d0671bb1a33ec38fbd3d25 Mon Sep 17 00:00:00 2001
From: Huang Rui <ray.huang@amd.com>
Date: Mon, 2 Sep 2019 23:34:32 +0800
Subject: drm/amdgpu: disable gfxoff while use no H/W scheduling policy
Git-commit: aa978594cf7fa0ad91d0671bb1a33ec38fbd3d25
Patch-mainline: v5.5-rc1
References: bsc#1152489
While gfxoff is enabled, the mmVM_XXX registers will be 0xfffffff while the GFX
is in "off" state. KFD queue creattion doesn't use ring based method, so it will
trigger a VM fault.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 7723f4ed0130..733331837d92 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -169,6 +169,7 @@ extern int amdgpu_discovery;
extern int amdgpu_mes;
extern int amdgpu_noretry;
extern int amdgpu_force_asic_type;
+extern int sched_policy;
#ifdef CONFIG_DRM_AMDGPU_SI
extern int amdgpu_si_support;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index b09237b6531c..1affaa4ee1ee 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1624,7 +1624,7 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
}
adev->pm.pp_feature = amdgpu_pp_feature_mask;
- if (amdgpu_sriov_vf(adev))
+ if (amdgpu_sriov_vf(adev) || sched_policy == KFD_SCHED_POLICY_NO_HWS)
adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
for (i = 0; i < adev->num_ip_blocks; i++) {
--
2.28.0