1/* $NetBSD: pceb.c,v 1.5 2011/06/18 08:08:29 matt Exp $ */ 2 3/*- 4 * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: pceb.c,v 1.5 2011/06/18 08:08:29 matt Exp $"); 34 35#include <sys/types.h> 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/device.h> 39 40#include <sys/bus.h> 41 42#include <dev/isa/isavar.h> 43#include <dev/eisa/eisavar.h> 44 45#include <dev/pci/pcivar.h> 46#include <dev/pci/pcireg.h> 47 48#include <dev/pci/pcidevs.h> 49 50#include "eisa.h" 51#include "isa.h" 52 53int pcebmatch(device_t, cfdata_t, void *); 54void pcebattach(device_t, device_t, void *); 55 56CFATTACH_DECL_NEW(pceb, 0, 57 pcebmatch, pcebattach, NULL, NULL); 58 59void pceb_callback(device_t); 60 61union pceb_attach_args { 62 const char *ea_name; /* XXX should be common */ 63 struct isabus_attach_args ea_iba; 64 struct eisabus_attach_args ea_eba; 65}; 66 67int 68pcebmatch(device_t parent, cfdata_t match, void *aux) 69{ 70 struct pci_attach_args *pa = aux; 71 72 /* 73 * Match anything which claims to be PCI-EISA bridge. 74 */ 75 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 76 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_EISA) 77 return (1); 78 79 /* 80 * Match some known PCI-EISA bridges explicitly. 81 * XXX this is probably not necessary, should be matched by above 82 * condition 83 */ 84 switch (PCI_VENDOR(pa->pa_id)) { 85 case PCI_VENDOR_INTEL: 86 switch (PCI_PRODUCT(pa->pa_id)) { 87 case PCI_PRODUCT_INTEL_PCEB: 88 return (1); 89 } 90 break; 91 } 92 93 return (0); 94} 95 96void 97pcebattach(device_t parent, device_t self, void *aux) 98{ 99 struct pci_attach_args *pa = aux; 100 char devinfo[256]; 101 int error; 102 103 aprint_normal("\n"); 104 105 /* 106 * Just print out a description and defer configuration 107 * until all PCI devices have been attached. 108 */ 109 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 110 aprint_normal_dev(self, "%s (rev. 0x%02x)\n", devinfo, 111 PCI_REVISION(pa->pa_class)); 112 113 prep_eisa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent; 114 error = bus_space_init(&prep_eisa_io_space_tag, "eisa-ioport", NULL, 0); 115 if (error) 116 panic("prep_bus_space_init: can't init eisa io tag"); 117 118 prep_eisa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent; 119 error = bus_space_init(&prep_eisa_mem_space_tag, "eisa-iomem", NULL, 0); 120 if (error) 121 panic("prep_bus_space_init: can't init eisa mem tag"); 122 123 config_defer(self, pceb_callback); 124} 125 126void 127pceb_callback(device_t self) 128{ 129 union pceb_attach_args ea; 130 131 /* 132 * Attach the EISA bus behind this bridge. 133 */ 134 memset(&ea, 0, sizeof(ea)); 135 ea.ea_eba.eba_iot = &prep_eisa_io_space_tag; 136 ea.ea_eba.eba_memt = &prep_eisa_mem_space_tag; 137#if NEISA > 0 138 ea.ea_eba.eba_dmat = &eisa_bus_dma_tag; 139#endif 140 config_found_ia(self, "eisabus", &ea.ea_eba, eisabusprint); 141 142 /* 143 * Attach the ISA bus behind this bridge. 144 */ 145 memset(&ea, 0, sizeof(ea)); 146 ea.ea_iba.iba_iot = &genppc_isa_io_space_tag; 147 ea.ea_iba.iba_memt = &genppc_isa_mem_space_tag; 148#if NISA > 0 149 ea.ea_iba.iba_dmat = &isa_bus_dma_tag; 150#endif 151 config_found_ia(self, "isabus", &ea.ea_iba, isabusprint); 152} 153