From df6fbc83b17513ad71f921b8d7a83dde101fb1a7 Mon Sep 17 00:00:00 2001
From: Yintian Tao <yttao@amd.com>
Date: Mon, 13 Apr 2020 14:31:27 +0800
Subject: drm/amdgpu: resume kiq access debugfs
Git-commit: d32709dac627e5602fb3e66bcf4316906356120d
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

If there is no GPU hang, user still can access
debugfs through kiq.

Signed-off-by: Yintian Tao <yttao@amd.com>
Reviewed-by: Monk Liu <Monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 12 +++++++++---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h |  2 ++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 6a81c2ee7c7b..8c10084f44ef 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -335,17 +335,23 @@ void amdgpu_detect_virtualization(struct amdgpu_device *adev)
 	}
 }
 
-bool amdgpu_virt_can_access_debugfs(struct amdgpu_device *adev)
+bool amdgpu_virt_access_debugfs_is_mmio(struct amdgpu_device *adev)
 {
 	return amdgpu_sriov_is_debug(adev) ? true : false;
 }
 
+bool amdgpu_virt_access_debugfs_is_kiq(struct amdgpu_device *adev)
+{
+	return amdgpu_sriov_is_normal(adev) ? true : false;
+}
+
 int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev)
 {
-	if (!amdgpu_sriov_vf(adev))
+	if (!amdgpu_sriov_vf(adev) ||
+	    amdgpu_virt_access_debugfs_is_kiq(adev))
 		return 0;
 
-	if (amdgpu_virt_can_access_debugfs(adev))
+	if (amdgpu_virt_access_debugfs_is_mmio(adev))
 		adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
 	else
 		return -EPERM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index 8f20e6dbd7a9..de27308802c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -299,6 +299,8 @@ static inline bool is_virtual_machine(void)
 	((adev)->virt.gim_feature & AMDGIM_FEATURE_PP_ONE_VF)
 #define amdgpu_sriov_is_debug(adev) \
 	((!adev->in_gpu_reset) && adev->virt.tdr_debug)
+#define amdgpu_sriov_is_normal(adev) \
+	((!adev->in_gpu_reset) && (!adev->virt.tdr_debug))
 
 bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
 void amdgpu_virt_init_setting(struct amdgpu_device *adev);
-- 
2.28.0