Function tegra_pcib_attach

freebsd/arm/nvidia/tegra_pcie.c:1441–1579

}

static int
tegra_pcib_attach(device_t dev)
{
	struct tegra_pcib_softc *sc;
	phandle_t node;
	int rv;
	int rid;
	struct tegra_pcib_port *port;
	int i;

	sc = device_get_softc(dev);
	sc->dev = dev;
	mtx_init(&sc->mtx, "msi_mtx", NULL, MTX_DEF);

	node = ofw_bus_get_node(dev);
	sc->soc = (struct pcie_soc *)ofw_bus_search_compatible(dev,
	    compat_data)->ocd_data;

	rv = tegra_pcib_parse_fdt_resources(sc, node);
	if (rv != 0) {
		device_printf(dev, "Cannot get FDT resources\n");
		return (rv);
	}

	/* Allocate bus_space resources. */
	rid = 0;
	sc->pads_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (sc->pads_mem_res == NULL) {
		device_printf(dev, "Cannot allocate PADS register\n");
		rv = ENXIO;
		goto out;
	}
	/*
	 * XXX - FIXME
	 * tag for config space is not filled when RF_ALLOCATED flag is used.
	 */
	sc->bus_tag = rman_get_bustag(sc->pads_mem_res);

	rid = 1;
	sc->afi_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (sc->afi_mem_res == NULL) {
		device_printf(dev, "Cannot allocate AFI register\n");
		rv = ENXIO;
		goto out;
	}

	rid = 2;
	sc->cfg_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ALLOCATED);
	if (sc->cfg_mem_res == NULL) {
		device_printf(dev, "Cannot allocate config space memory\n");
		rv = ENXIO;
		goto out;
	}
	sc->cfg_base_addr = rman_get_start(sc->cfg_mem_res);