1 /* $OpenBSD: pcib.c,v 1.8 2001/01/27 04:59:40 mickey Exp $ */ 2 /* $NetBSD: pcib.c,v 1.6 1997/06/06 23:29:16 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1996 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/types.h> 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <machine/bus.h> 46 #include <dev/isa/isavar.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcireg.h> 50 51 #include <dev/pci/pcidevs.h> 52 53 #include "isa.h" 54 #include "pcibios.h" 55 #if NPCIBIOS > 0 56 #include <i386/pci/pcibiosvar.h> 57 #endif 58 59 int pcibmatch __P((struct device *, void *, void *)); 60 void pcibattach __P((struct device *, struct device *, void *)); 61 void pcib_callback __P((struct device *)); 62 int pcib_print __P((void *, const char *)); 63 64 struct cfattach pcib_ca = { 65 sizeof(struct device), pcibmatch, pcibattach 66 }; 67 68 struct cfdriver pcib_cd = { 69 NULL, "pcib", DV_DULL 70 }; 71 72 int 73 pcibmatch(parent, match, aux) 74 struct device *parent; 75 void *match, *aux; 76 { 77 struct pci_attach_args *pa = aux; 78 79 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 80 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) 81 return (1); 82 83 switch (PCI_VENDOR(pa->pa_id)) { 84 case PCI_VENDOR_INTEL: 85 switch (PCI_PRODUCT(pa->pa_id)) { 86 case PCI_PRODUCT_INTEL_SIO: 87 case PCI_PRODUCT_INTEL_82371MX: 88 case PCI_PRODUCT_INTEL_82371AB_ISA: 89 /* The above bridges mis-identify themselves */ 90 return (1); 91 } 92 case PCI_VENDOR_SIS: 93 switch (PCI_PRODUCT(pa->pa_id)) { 94 case PCI_PRODUCT_SIS_85C503: 95 /* mis-identifies itself as a miscellaneous prehistoric */ 96 return (1); 97 } 98 } 99 100 return (0); 101 } 102 103 void 104 pcibattach(parent, self, aux) 105 struct device *parent, *self; 106 void *aux; 107 { 108 /* 109 * Cannot attach isa bus now; must postpone for various reasons 110 */ 111 printf("\n"); 112 113 config_defer(self, pcib_callback); 114 } 115 116 void 117 pcib_callback(self) 118 struct device *self; 119 { 120 struct isabus_attach_args iba; 121 122 #if NPCIBIOS > 0 123 pci_intr_post_fixup(); 124 #endif 125 126 /* 127 * Attach the ISA bus behind this bridge. 128 */ 129 memset(&iba, 0, sizeof(iba)); 130 iba.iba_busname = "isa"; 131 iba.iba_iot = I386_BUS_SPACE_IO; 132 iba.iba_memt = I386_BUS_SPACE_MEM; 133 #if NISADMA > 0 134 iba.iba_dmat = &isa_bus_dma_tag; 135 #endif 136 config_found(self, &iba, pcib_print); 137 } 138 139 int 140 pcib_print(aux, pnp) 141 void *aux; 142 const char *pnp; 143 { 144 /* Only ISAs can attach to pcib's; easy. */ 145 if (pnp) 146 printf("isa at %s", pnp); 147 return (UNCONF); 148 } 149