1 /* $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause AND BSD-3-Clause 5 * 6 * Copyright (c) 2002 JF Hay. All rights reserved. 7 * Copyright (c) 2000 M. Warner Losh <imp@FreeBSD.org> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /*- 32 * Copyright (c) 1996, 1998, 1999 33 * Christopher G. Demetriou. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Christopher G. Demetriou 46 * for the NetBSD Project. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 #include <sys/cdefs.h> 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/module.h> 67 #include <sys/bus.h> 68 #include <sys/conf.h> 69 #include <sys/malloc.h> 70 #include <sys/sysctl.h> 71 72 #include <machine/bus.h> 73 #include <machine/resource.h> 74 #include <sys/rman.h> 75 76 #include <dev/pci/pcireg.h> 77 #include <dev/pci/pcivar.h> 78 79 #include <dev/puc/puc_cfg.h> 80 #include <dev/puc/puc_bfe.h> 81 #include <dev/puc/pucdata.c> 82 83 static int puc_msi_disable; 84 SYSCTL_INT(_hw_puc, OID_AUTO, msi_disable, CTLFLAG_RDTUN, 85 &puc_msi_disable, 0, "Disable use of MSI interrupts by puc(9)"); 86 87 static const struct puc_cfg * 88 puc_pci_match(device_t dev, const struct puc_cfg *desc) 89 { 90 uint16_t vendor, device; 91 uint16_t subvendor, subdevice; 92 93 vendor = pci_get_vendor(dev); 94 device = pci_get_device(dev); 95 subvendor = pci_get_subvendor(dev); 96 subdevice = pci_get_subdevice(dev); 97 98 while (desc->vendor != 0xffff) { 99 if (desc->vendor == vendor && desc->device == device) { 100 /* exact match */ 101 if (desc->subvendor == subvendor && 102 desc->subdevice == subdevice) 103 return (desc); 104 /* wildcard match */ 105 if (desc->subvendor == 0xffff) 106 return (desc); 107 } 108 desc++; 109 } 110 111 /* no match */ 112 return (NULL); 113 } 114 115 static int 116 puc_pci_probe(device_t dev) 117 { 118 const struct puc_cfg *desc; 119 120 if ((pci_read_config(dev, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE) != 0) 121 return (ENXIO); 122 123 desc = puc_pci_match(dev, puc_pci_devices); 124 if (desc == NULL) 125 return (ENXIO); 126 return (puc_bfe_probe(dev, desc)); 127 } 128 129 static int 130 puc_pci_attach(device_t dev) 131 { 132 struct puc_softc *sc; 133 int error, count; 134 135 sc = device_get_softc(dev); 136 137 if (!puc_msi_disable) { 138 count = 1; 139 140 if (pci_alloc_msi(dev, &count) == 0) { 141 sc->sc_msi = 1; 142 sc->sc_irid = 1; 143 } 144 } 145 146 error = puc_bfe_attach(dev); 147 148 if (error != 0 && sc->sc_msi) 149 pci_release_msi(dev); 150 151 return (error); 152 } 153 154 static int 155 puc_pci_detach(device_t dev) 156 { 157 struct puc_softc *sc; 158 int error; 159 160 sc = device_get_softc(dev); 161 162 error = puc_bfe_detach(dev); 163 164 if (error != 0) 165 return (error); 166 167 if (sc->sc_msi) 168 error = pci_release_msi(dev); 169 170 return (error); 171 } 172 173 static device_method_t puc_pci_methods[] = { 174 /* Device interface */ 175 DEVMETHOD(device_probe, puc_pci_probe), 176 DEVMETHOD(device_attach, puc_pci_attach), 177 DEVMETHOD(device_detach, puc_pci_detach), 178 179 DEVMETHOD(bus_alloc_resource, puc_bus_alloc_resource), 180 DEVMETHOD(bus_release_resource, puc_bus_release_resource), 181 DEVMETHOD(bus_get_resource, puc_bus_get_resource), 182 DEVMETHOD(bus_read_ivar, puc_bus_read_ivar), 183 DEVMETHOD(bus_setup_intr, puc_bus_setup_intr), 184 DEVMETHOD(bus_teardown_intr, puc_bus_teardown_intr), 185 DEVMETHOD(bus_print_child, puc_bus_print_child), 186 DEVMETHOD(bus_child_pnpinfo, puc_bus_child_pnpinfo), 187 DEVMETHOD(bus_child_location, puc_bus_child_location), 188 189 DEVMETHOD_END 190 }; 191 192 static driver_t puc_pci_driver = { 193 puc_driver_name, 194 puc_pci_methods, 195 sizeof(struct puc_softc), 196 }; 197 198 DRIVER_MODULE(puc, pci, puc_pci_driver, 0, 0); 199 MODULE_PNP_INFO("U16:vendor;U16:device;U16:#;U16:#;D:#", pci, puc, 200 puc_pci_devices, nitems(puc_pci_devices) - 1); 201