puc_pci.c revision 330897
1/* $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-3-Clause 5 * 6 * Copyright (c) 2002 JF Hay. All rights reserved. 7 * Copyright (c) 2000 M. Warner Losh. All rights reserved. 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__FBSDID("$FreeBSD: stable/11/sys/dev/puc/puc_pci.c 330897 2018-03-14 03:19:51Z eadler $"); 64 65#include <sys/param.h> 66#include <sys/systm.h> 67#include <sys/kernel.h> 68#include <sys/module.h> 69#include <sys/bus.h> 70#include <sys/conf.h> 71#include <sys/malloc.h> 72#include <sys/sysctl.h> 73 74#include <machine/bus.h> 75#include <machine/resource.h> 76#include <sys/rman.h> 77 78#include <dev/pci/pcireg.h> 79#include <dev/pci/pcivar.h> 80 81#include <dev/puc/puc_cfg.h> 82#include <dev/puc/puc_bfe.h> 83 84static int puc_msi_disable; 85SYSCTL_INT(_hw_puc, OID_AUTO, msi_disable, CTLFLAG_RDTUN, 86 &puc_msi_disable, 0, "Disable use of MSI interrupts by puc(9)"); 87 88static const struct puc_cfg * 89puc_pci_match(device_t dev, const struct puc_cfg *desc) 90{ 91 uint16_t vendor, device; 92 uint16_t subvendor, subdevice; 93 94 vendor = pci_get_vendor(dev); 95 device = pci_get_device(dev); 96 subvendor = pci_get_subvendor(dev); 97 subdevice = pci_get_subdevice(dev); 98 99 while (desc->vendor != 0xffff) { 100 if (desc->vendor == vendor && desc->device == device) { 101 /* exact match */ 102 if (desc->subvendor == subvendor && 103 desc->subdevice == subdevice) 104 return (desc); 105 /* wildcard match */ 106 if (desc->subvendor == 0xffff) 107 return (desc); 108 } 109 desc++; 110 } 111 112 /* no match */ 113 return (NULL); 114} 115 116static int 117puc_pci_probe(device_t dev) 118{ 119 const struct puc_cfg *desc; 120 121 if ((pci_read_config(dev, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE) != 0) 122 return (ENXIO); 123 124 desc = puc_pci_match(dev, puc_pci_devices); 125 if (desc == NULL) 126 return (ENXIO); 127 return (puc_bfe_probe(dev, desc)); 128} 129 130static int 131puc_pci_attach(device_t dev) 132{ 133 struct puc_softc *sc; 134 int error, count; 135 136 sc = device_get_softc(dev); 137 138 if (!puc_msi_disable) { 139 count = 1; 140 141 if (pci_alloc_msi(dev, &count) == 0) { 142 sc->sc_msi = 1; 143 sc->sc_irid = 1; 144 } 145 } 146 147 error = puc_bfe_attach(dev); 148 149 if (error != 0 && sc->sc_msi) 150 pci_release_msi(dev); 151 152 return (error); 153} 154 155static int 156puc_pci_detach(device_t dev) 157{ 158 struct puc_softc *sc; 159 int error; 160 161 sc = device_get_softc(dev); 162 163 error = puc_bfe_detach(dev); 164 165 if (error != 0) 166 return (error); 167 168 if (sc->sc_msi) 169 error = pci_release_msi(dev); 170 171 return (error); 172} 173 174 175static device_method_t puc_pci_methods[] = { 176 /* Device interface */ 177 DEVMETHOD(device_probe, puc_pci_probe), 178 DEVMETHOD(device_attach, puc_pci_attach), 179 DEVMETHOD(device_detach, puc_pci_detach), 180 181 DEVMETHOD(bus_alloc_resource, puc_bus_alloc_resource), 182 DEVMETHOD(bus_release_resource, puc_bus_release_resource), 183 DEVMETHOD(bus_get_resource, puc_bus_get_resource), 184 DEVMETHOD(bus_read_ivar, puc_bus_read_ivar), 185 DEVMETHOD(bus_setup_intr, puc_bus_setup_intr), 186 DEVMETHOD(bus_teardown_intr, puc_bus_teardown_intr), 187 DEVMETHOD(bus_print_child, puc_bus_print_child), 188 DEVMETHOD(bus_child_pnpinfo_str, puc_bus_child_pnpinfo_str), 189 DEVMETHOD(bus_child_location_str, puc_bus_child_location_str), 190 191 DEVMETHOD_END 192}; 193 194static driver_t puc_pci_driver = { 195 puc_driver_name, 196 puc_pci_methods, 197 sizeof(struct puc_softc), 198}; 199 200DRIVER_MODULE(puc, pci, puc_pci_driver, puc_devclass, 0, 0); 201