MGB4_XDMA_BAR_ID
res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID);
res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID);
res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID];