init_completion(&callback_data.done);
 
-       offset = 0xfffff0000400ULL + index * 4;
+       offset = (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4;
        fw_send_request(device->card, &t, TCODE_READ_QUADLET_REQUEST,
                        device->node_id, generation, device->max_speed,
                        offset, NULL, 4, complete_transaction, &callback_data);
 
 const struct fw_address_region fw_private_region =
        { .start = 0xffffe0000000ULL, .end = 0xfffff0000000ULL,  };
 const struct fw_address_region fw_csr_region =
-       { .start = 0xfffff0000000ULL, .end = 0xfffff0000800ULL,  };
+       { .start = CSR_REGISTER_BASE,
+         .end   = CSR_REGISTER_BASE | CSR_CONFIG_ROM_END,  };
 const struct fw_address_region fw_unit_space_region =
        { .start = 0xfffff0000900ULL, .end = 0x1000000000000ULL, };
 EXPORT_SYMBOL(fw_low_memory_region);
 EXPORT_SYMBOL(fw_core_handle_response);
 
 static const struct fw_address_region topology_map_region =
-       { .start = 0xfffff0001000ull, .end = 0xfffff0001400ull, };
+       { .start = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP,
+         .end   = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP_END, };
 
 static void
 handle_topology_map(struct fw_card *card, struct fw_request *request,
 };
 
 static const struct fw_address_region registers_region =
-       { .start = 0xfffff0000000ull, .end = 0xfffff0000400ull, };
+       { .start = CSR_REGISTER_BASE,
+         .end   = CSR_REGISTER_BASE | CSR_CONFIG_ROM, };
 
 static void
 handle_registers(struct fw_card *card, struct fw_request *request,