1 /* $NetBSD: pcib.c,v 1.1 2002/02/09 12:14:02 chris 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 * from: i386/pci/pcib.c,v 1.12 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/isa/isavar.h> 48 49 #include <dev/pci/pcivar.h> 50 #include <dev/pci/pcireg.h> 51 52 #include <dev/pci/pcidevs.h> 53 54 #include "isadma.h" 55 56 int pcibmatch __P((struct device *, struct cfdata *, void *)); 57 void pcibattach __P((struct device *, struct device *, void *)); 58 59 struct cfattach pcib_ca = { 60 sizeof(struct device), pcibmatch, pcibattach 61 }; 62 63 void pcib_callback __P((struct device *)); 64 int pcib_print __P((void *, const char *)); 65 66 int 67 pcibmatch(parent, match, aux) 68 struct device *parent; 69 struct cfdata *match; 70 void *aux; 71 { 72 struct pci_attach_args *pa = aux; 73 74 /* 75 * Match tested PCI-ISA bridges. 76 */ 77 switch (PCI_VENDOR(pa->pa_id)) { 78 case PCI_VENDOR_ALI: 79 switch (PCI_PRODUCT(pa->pa_id)) { 80 case PCI_PRODUCT_ALI_M1543: 81 return (1); 82 } 83 break; 84 } 85 86 return (0); 87 } 88 89 void 90 pcibattach(parent, self, aux) 91 struct device *parent, *self; 92 void *aux; 93 { 94 struct pci_attach_args *pa = aux; 95 char devinfo[256]; 96 97 printf("\n"); 98 99 /* 100 * Just print out a description and set the ISA bus 101 * callback. 102 */ 103 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 104 printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo, 105 PCI_REVISION(pa->pa_class)); 106 107 /* Set the ISA bus callback */ 108 config_defer(self, pcib_callback); 109 } 110 111 void 112 pcib_callback(self) 113 struct device *self; 114 { 115 struct isabus_attach_args iba; 116 117 /* 118 * Attach the ISA bus behind this bridge. 119 */ 120 memset(&iba, 0, sizeof(iba)); 121 iba.iba_busname = "isa"; 122 iba.iba_iot = &isa_io_bs_tag; 123 iba.iba_memt = &isa_mem_bs_tag; 124 #if NISADMA > 0 125 iba.iba_dmat = &isa_bus_dma_tag; 126 #endif 127 config_found(self, &iba, pcib_print); 128 } 129 130 int 131 pcib_print(aux, pnp) 132 void *aux; 133 const char *pnp; 134 { 135 136 /* Only ISAs can attach to pcib's; easy. */ 137 if (pnp) 138 printf("isa at %s", pnp); 139 return (UNCONF); 140 } 141