drm/amdgpu: use TTM values instead of MC values for the info queries

Use the TTM values instead of the hardware config here.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -485,7 +485,8 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
 		vram_gtt.vram_size -= adev->vram_pin_size;
 		vram_gtt.vram_cpu_accessible_size = adev->mc.visible_vram_size;
 		vram_gtt.vram_cpu_accessible_size -= (adev->vram_pin_size - adev->invisible_pin_size);
-		vram_gtt.gtt_size  = adev->mc.gtt_size;
+		vram_gtt.gtt_size = adev->mman.bdev.man[TTM_PL_TT].size;
+		vram_gtt.gtt_size *= PAGE_SIZE;
 		vram_gtt.gtt_size -= adev->gart_pin_size;
 		return copy_to_user(out, &vram_gtt,
 				    min((size_t)size, sizeof(vram_gtt))) ? -EFAULT : 0;
@@ -510,9 +511,10 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
 		mem.cpu_accessible_vram.max_allocation =
 			mem.cpu_accessible_vram.usable_heap_size * 3 / 4;
 
-		mem.gtt.total_heap_size = adev->mc.gtt_size;
-		mem.gtt.usable_heap_size =
-			adev->mc.gtt_size - adev->gart_pin_size;
+		mem.gtt.total_heap_size = adev->mman.bdev.man[TTM_PL_TT].size;
+		mem.gtt.total_heap_size *= PAGE_SIZE;
+		mem.gtt.usable_heap_size = mem.gtt.total_heap_size
+			- adev->gart_pin_size;
 		mem.gtt.heap_usage = atomic64_read(&adev->gtt_usage);
 		mem.gtt.max_allocation = mem.gtt.usable_heap_size * 3 / 4;