Function mtk_pci_alloc_resource

freebsd/mips/mediatek/mtk_pcie.c:412–452

}

static struct resource *
mtk_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
	rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
	struct mtk_pci_softc *sc = device_get_softc(bus);
	struct resource *rv;
	struct rman *rm;

	switch (type) {
	case PCI_RES_BUS:
		return pci_domain_alloc_bus(0, child, rid, start, end, count,
					    flags);
	case SYS_RES_IRQ:
		rm = &sc->sc_irq_rman;
		break;
	case SYS_RES_IOPORT:
		rm = &sc->sc_io_rman;
		break;
	case SYS_RES_MEMORY:
		rm = &sc->sc_mem_rman;
		break;
	default:
		return (NULL);
	}

	rv = rman_reserve_resource(rm, start, end, count, flags, child);

	if (rv == NULL)
		return (NULL);

	rman_set_rid(rv, *rid);

	if ((flags & RF_ACTIVE) && type != SYS_RES_IRQ) {
		if (bus_activate_resource(child, type, *rid, rv)) {
			rman_release_resource(rv);
			return (NULL);
		}
	}

	return (rv);
}

static int
mtk_pci_release_resource(device_t bus, device_t child, int type, int rid,