drm/amdgpu: disable agp for sriov

Since agp is not used for sriov, just disable it
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Frank.Min <Frank.Min@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -220,6 +220,14 @@ void amdgpu_gmc_agp_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
 	const uint64_t sixteen_gb_mask = ~(sixteen_gb - 1);
 	u64 size_af, size_bf;
 
+	if (amdgpu_sriov_vf(adev)) {
+		mc->agp_start = 0xffffffff;
+		mc->agp_end = 0x0;
+		mc->agp_size = 0;
+
+		return;
+	}
+
 	if (mc->fb_start > mc->gart_start) {
 		size_bf = (mc->fb_start & sixteen_gb_mask) -
 			ALIGN(mc->gart_end + 1, sixteen_gb);

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -934,7 +934,6 @@ static void gmc_v9_0_vram_gtt_location(struct amdgpu_device *adev,
 	base += adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size;
 	amdgpu_gmc_vram_location(adev, mc, base);
 	amdgpu_gmc_gart_location(adev, mc);
-	if (!amdgpu_sriov_vf(adev))
 	amdgpu_gmc_agp_location(adev, mc);
 	/* base offset of vram pages */
 	adev->vm_manager.vram_base_offset = gfxhub_v1_0_get_mc_fb_offset(adev);