1/*- 2 * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier 3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 4 * Copyright (c) 2000 BSDi 5 * All rights reserved. 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 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#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34/* 35 * PCI:EISA bridge support 36 */ 37 38#include <sys/param.h> 39#include <sys/kernel.h> 40#include <sys/module.h> 41#include <sys/bus.h> 42 43#include <dev/pci/pcivar.h> 44#include <dev/pci/pcireg.h> 45 46static int eisab_probe(device_t dev); 47static int eisab_attach(device_t dev); 48 49static device_method_t eisab_methods[] = { 50 /* Device interface */ 51 DEVMETHOD(device_probe, eisab_probe), 52 DEVMETHOD(device_attach, eisab_attach), 53 DEVMETHOD(device_shutdown, bus_generic_shutdown), 54 DEVMETHOD(device_suspend, bus_generic_suspend), 55 DEVMETHOD(device_resume, bus_generic_resume), 56 57 /* Bus interface */ 58 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 59 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 60 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 61 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 62 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 63 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 64 65 DEVMETHOD_END 66}; 67 68static driver_t eisab_driver = { 69 "eisab", 70 eisab_methods, 71 0, 72}; 73 74static devclass_t eisab_devclass; 75 76DRIVER_MODULE(eisab, pci, eisab_driver, eisab_devclass, 0, 0); 77 78static int 79eisab_probe(device_t dev) 80{ 81 int matched = 0; 82 83 /* 84 * Generic match by class/subclass. 85 */ 86 if ((pci_get_class(dev) == PCIC_BRIDGE) && 87 (pci_get_subclass(dev) == PCIS_BRIDGE_EISA)) 88 matched = 1; 89 90 /* 91 * Some bridges don't correctly report their class. 92 */ 93 switch (pci_get_devid(dev)) { 94 case 0x04828086: /* may show up as PCI-HOST or 0:0 */ 95 matched = 1; 96 break; 97 default: 98 break; 99 } 100 101 if (matched) { 102 device_set_desc(dev, "PCI-EISA bridge"); 103 return(-10000); 104 } 105 return(ENXIO); 106} 107 108static int 109eisab_attach(device_t dev) 110{ 111 /* 112 * Attach an EISA bus. Note that we can only have one EISA bus. 113 */ 114 if (!devclass_get_device(devclass_find("eisa"), 0)) 115 device_add_child(dev, "eisa", -1); 116 117 /* 118 * Attach an ISA bus as well, since the EISA bus may have ISA 119 * cards installed, and we may have no EISA support in the system. 120 */ 121 if (!devclass_get_device(devclass_find("isa"), 0)) 122 device_add_child(dev, "isa", -1); 123 124 bus_generic_attach(dev); 125 126 return(0); 127} 128