1 /* $NetBSD: pceb.c,v 1.2 2007/10/17 19:56:51 garbled 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: pceb.c,v 1.2 2007/10/17 19:56:51 garbled Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 49 #include <dev/isa/isavar.h> 50 #include <dev/eisa/eisavar.h> 51 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pcireg.h> 54 55 #include <dev/pci/pcidevs.h> 56 57 #include "eisa.h" 58 #include "isa.h" 59 60 int pcebmatch(struct device *, struct cfdata *, void *); 61 void pcebattach(struct device *, struct device *, void *); 62 63 CFATTACH_DECL(pceb, sizeof(struct device), 64 pcebmatch, pcebattach, NULL, NULL); 65 66 void pceb_callback(struct device *); 67 68 union pceb_attach_args { 69 const char *ea_name; /* XXX should be common */ 70 struct isabus_attach_args ea_iba; 71 struct eisabus_attach_args ea_eba; 72 }; 73 74 int 75 pcebmatch(struct device *parent, struct cfdata *match, void *aux) 76 { 77 struct pci_attach_args *pa = aux; 78 79 /* 80 * Match anything which claims to be PCI-EISA bridge. 81 */ 82 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 83 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_EISA) 84 return (1); 85 86 /* 87 * Match some known PCI-EISA bridges explicitly. 88 * XXX this is probably not necessary, should be matched by above 89 * condition 90 */ 91 switch (PCI_VENDOR(pa->pa_id)) { 92 case PCI_VENDOR_INTEL: 93 switch (PCI_PRODUCT(pa->pa_id)) { 94 case PCI_PRODUCT_INTEL_PCEB: 95 return (1); 96 } 97 break; 98 } 99 100 return (0); 101 } 102 103 void 104 pcebattach(struct device *parent, struct device *self, void *aux) 105 { 106 struct pci_attach_args *pa = aux; 107 char devinfo[256]; 108 int error; 109 110 aprint_normal("\n"); 111 112 /* 113 * Just print out a description and defer configuration 114 * until all PCI devices have been attached. 115 */ 116 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 117 aprint_normal("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo, 118 PCI_REVISION(pa->pa_class)); 119 120 prep_eisa_io_space_tag.pbs_extent = prep_io_space_tag.pbs_extent; 121 error = bus_space_init(&prep_eisa_io_space_tag, "eisa-ioport", NULL, 0); 122 if (error) 123 panic("prep_bus_space_init: can't init eisa io tag"); 124 125 prep_eisa_mem_space_tag.pbs_extent = prep_mem_space_tag.pbs_extent; 126 error = bus_space_init(&prep_eisa_mem_space_tag, "eisa-iomem", NULL, 0); 127 if (error) 128 panic("prep_bus_space_init: can't init eisa mem tag"); 129 130 config_defer(self, pceb_callback); 131 } 132 133 void 134 pceb_callback(struct device *self) 135 { 136 union pceb_attach_args ea; 137 138 /* 139 * Attach the EISA bus behind this bridge. 140 */ 141 memset(&ea, 0, sizeof(ea)); 142 ea.ea_eba.eba_iot = &prep_eisa_io_space_tag; 143 ea.ea_eba.eba_memt = &prep_eisa_mem_space_tag; 144 #if NEISA > 0 145 ea.ea_eba.eba_dmat = &eisa_bus_dma_tag; 146 #endif 147 config_found_ia(self, "eisabus", &ea.ea_eba, eisabusprint); 148 149 /* 150 * Attach the ISA bus behind this bridge. 151 */ 152 memset(&ea, 0, sizeof(ea)); 153 ea.ea_iba.iba_iot = &genppc_isa_io_space_tag; 154 ea.ea_iba.iba_memt = &genppc_isa_mem_space_tag; 155 #if NISA > 0 156 ea.ea_iba.iba_dmat = &isa_bus_dma_tag; 157 #endif 158 config_found_ia(self, "isabus", &ea.ea_iba, isabusprint); 159 } 160