1 /* $NetBSD: pceb.c,v 1.23 2010/04/28 19:17:03 dyoung 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 1.23 2010/04/28 19:17:03 dyoung 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 <machine/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 53 int pcebmatch(device_t , cfdata_t, void *); 54 void pcebattach(device_t, device_t, void *); 55 56 CFATTACH_DECL_NEW(pceb, 0, pcebmatch, pcebattach, NULL, NULL); 57 58 void pceb_callback(device_t); 59 60 union pceb_attach_args { 61 const char *ea_name; /* XXX should be common */ 62 struct isabus_attach_args ea_iba; 63 struct eisabus_attach_args ea_eba; 64 }; 65 66 int 67 pcebmatch(device_t parent, cfdata_t match, void *aux) 68 { 69 struct pci_attach_args *pa = aux; 70 71 /* 72 * Match anything which claims to be PCI-EISA bridge. 73 */ 74 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 75 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_EISA) 76 return (1); 77 78 /* 79 * Match some known PCI-EISA bridges explicitly. 80 * XXX this is probably not necessary, should be matched by above 81 * condition 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_PCEB: 87 return (1); 88 } 89 break; 90 } 91 92 return (0); 93 } 94 95 void 96 pcebattach(device_t parent, device_t self, void *aux) 97 { 98 struct pci_attach_args *pa = aux; 99 char devinfo[256]; 100 101 aprint_naive("\n"); 102 aprint_normal("\n"); 103 104 /* 105 * Just print out a description and defer configuration 106 * until all PCI devices have been attached. 107 */ 108 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 109 aprint_normal_dev(self, "%s (rev. 0x%02x)\n", devinfo, 110 PCI_REVISION(pa->pa_class)); 111 112 config_defer(self, pceb_callback); 113 } 114 115 void 116 pceb_callback(device_t self) 117 { 118 union pceb_attach_args ea; 119 120 /* 121 * Attach the EISA bus behind this bridge. 122 */ 123 memset(&ea, 0, sizeof(ea)); 124 ea.ea_eba.eba_iot = x86_bus_space_io; 125 ea.ea_eba.eba_memt = x86_bus_space_mem; 126 #if NEISA > 0 127 ea.ea_eba.eba_dmat = &eisa_bus_dma_tag; 128 #endif 129 config_found_ia(self, "eisabus", &ea.ea_eba, eisabusprint); 130 131 /* 132 * Attach the ISA bus behind this bridge. 133 */ 134 memset(&ea, 0, sizeof(ea)); 135 ea.ea_iba.iba_iot = x86_bus_space_io; 136 ea.ea_iba.iba_memt = x86_bus_space_mem; 137 #if NISA > 0 138 ea.ea_iba.iba_dmat = &isa_bus_dma_tag; 139 #endif 140 config_found_ia(self, "isabus", &ea.ea_iba, isabusprint); 141 } 142