drm/amdgpu: Show current compute partition on VF

Enable sysfs node for current compute partition mode on VFs also.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Vignesh Chander <Vignesh.Chander@amd.com>
Tested-by: Vignesh Chander <Vignesh.Chander@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

@@ -1604,21 +1604,46 @@ static DEVICE_ATTR(available_compute_partition, 0444,
 
 int amdgpu_gfx_sysfs_init(struct amdgpu_device *adev)
 {
+	struct amdgpu_xcp_mgr *xcp_mgr = adev->xcp_mgr;
+	bool xcp_switch_supported;
 	int r;
 
+	if (!xcp_mgr)
+		return 0;
+
+	xcp_switch_supported =
+		(xcp_mgr->funcs && xcp_mgr->funcs->switch_partition_mode);
+
+	if (!xcp_switch_supported)
+		dev_attr_current_compute_partition.attr.mode &=
+			~(S_IWUSR | S_IWGRP | S_IWOTH);
+
 	r = device_create_file(adev->dev, &dev_attr_current_compute_partition);
 	if (r)
 		return r;
 
-	r = device_create_file(adev->dev, &dev_attr_available_compute_partition);
+	if (xcp_switch_supported)
+		r = device_create_file(adev->dev,
+				       &dev_attr_available_compute_partition);
 
 	return r;
 }
 
 void amdgpu_gfx_sysfs_fini(struct amdgpu_device *adev)
 {
+	struct amdgpu_xcp_mgr *xcp_mgr = adev->xcp_mgr;
+	bool xcp_switch_supported;
+
+	if (!xcp_mgr)
+		return;
+
+	xcp_switch_supported =
+		(xcp_mgr->funcs && xcp_mgr->funcs->switch_partition_mode);
 	device_remove_file(adev->dev, &dev_attr_current_compute_partition);
-	device_remove_file(adev->dev, &dev_attr_available_compute_partition);
+
+	if (xcp_switch_supported)
+		device_remove_file(adev->dev,
+				   &dev_attr_available_compute_partition);
 }
 
 int amdgpu_gfx_sysfs_isolation_shader_init(struct amdgpu_device *adev)

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -1165,12 +1165,9 @@ static int gfx_v9_4_3_sw_init(struct amdgpu_ip_block *ip_block)
 	if (r)
 		return r;
 
-
-	if (!amdgpu_sriov_vf(adev)) {
-		r = amdgpu_gfx_sysfs_init(adev);
-		if (r)
-			return r;
-	}
+	r = amdgpu_gfx_sysfs_init(adev);
+	if (r)
+		return r;
 
 	gfx_v9_4_3_alloc_ip_dump(adev);
 
@@ -1201,8 +1198,7 @@ static int gfx_v9_4_3_sw_fini(struct amdgpu_ip_block *ip_block)
 	gfx_v9_4_3_mec_fini(adev);
 	amdgpu_bo_unref(&adev->gfx.rlc.clear_state_obj);
 	gfx_v9_4_3_free_microcode(adev);
-	if (!amdgpu_sriov_vf(adev))
-		amdgpu_gfx_sysfs_fini(adev);
+	amdgpu_gfx_sysfs_fini(adev);
 	amdgpu_gfx_sysfs_isolation_shader_fini(adev);
 
 	kfree(adev->gfx.ip_dump_core);