1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2021 Alstom Group. 5 * Copyright (c) 2021 Semihalf. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/rman.h> 37 38 #include <dev/pci/pcireg.h> 39 #include <dev/pci/pcivar.h> 40 #include <dev/pci/pci_private.h> 41 42 #include <dev/ofw/openfirm.h> 43 #include <dev/ofw/ofw_bus.h> 44 #include <dev/ofw/ofw_bus_subr.h> 45 46 #include "pcib_if.h" 47 #include "pci_if.h" 48 49 static int ofw_pci_probe(device_t); 50 static const struct ofw_bus_devinfo* pci_ofw_get_devinfo(device_t, device_t); 51 52 static device_method_t ofw_pci_methods[] = { 53 DEVMETHOD(device_probe, ofw_pci_probe), 54 55 /* ofw_bus interface */ 56 DEVMETHOD(ofw_bus_get_devinfo, pci_ofw_get_devinfo), 57 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 58 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 59 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 60 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 61 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 62 63 DEVMETHOD_END 64 }; 65 66 static devclass_t pci_devclass; 67 68 DEFINE_CLASS_1(pci, ofw_pci_driver, ofw_pci_methods, sizeof(struct pci_softc), 69 pci_driver); 70 DRIVER_MODULE(ofw_pci, pcib, ofw_pci_driver, pci_devclass, 0, 0); 71 MODULE_DEPEND(ofw_pci, simplebus, 1, 1, 1); 72 MODULE_DEPEND(ofw_pci, pci, 1, 1, 1); 73 MODULE_VERSION(ofw_pci, 1); 74 75 static int 76 ofw_pci_probe(device_t dev) 77 { 78 device_t parent; 79 80 parent = device_get_parent(dev); 81 if (ofw_bus_get_node(parent) == -1) 82 return (ENXIO); 83 84 device_set_desc(dev, "OFW PCI bus"); 85 return (BUS_PROBE_DEFAULT); 86 } 87 88 /* Pass the request up to our parent. */ 89 static const struct ofw_bus_devinfo* 90 pci_ofw_get_devinfo(device_t bus, device_t dev) 91 { 92 93 return OFW_BUS_GET_DEVINFO(device_get_parent(bus), dev); 94 } 95