1 /* $NetBSD: pcmb.c,v 1.3 2001/11/15 07:03:35 lukem 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 and Jaromir Dolecek. 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 /* 40 * "Driver" for PCI-MCA Bridges. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: pcmb.c,v 1.3 2001/11/15 07:03:35 lukem Exp $"); 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 51 #include <machine/bus.h> 52 53 #include <dev/mca/mcavar.h> 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 58 #include <dev/pci/pcidevs.h> 59 60 #include "mca.h" 61 62 int pcmbmatch __P((struct device *, struct cfdata *, void *)); 63 void pcmbattach __P((struct device *, struct device *, void *)); 64 65 struct cfattach pcmb_ca = { 66 sizeof(struct device), pcmbmatch, pcmbattach 67 }; 68 69 void pcmb_callback __P((struct device *)); 70 int pcmb_print __P((void *, const char *)); 71 72 union pcmb_attach_args { 73 const char *ma_name; /* XXX should be common */ 74 struct mcabus_attach_args ma_mba; 75 }; 76 77 int 78 pcmbmatch(parent, match, aux) 79 struct device *parent; 80 struct cfdata *match; 81 void *aux; 82 { 83 struct pci_attach_args *pa = aux; 84 85 /* 86 * Match anything which claims to be PCI-MCA bridge. 87 */ 88 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE 89 && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC) 90 return (1); 91 92 return (0); 93 } 94 95 void 96 pcmbattach(parent, self, aux) 97 struct device *parent, *self; 98 void *aux; 99 { 100 struct pci_attach_args *pa = aux; 101 char devinfo[256]; 102 103 printf("\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); 110 printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo, 111 PCI_REVISION(pa->pa_class)); 112 113 config_defer(self, pcmb_callback); 114 } 115 116 void 117 pcmb_callback(self) 118 struct device *self; 119 { 120 union pcmb_attach_args ma; 121 122 /* 123 * Attach MCA bus behind this bridge. 124 */ 125 ma.ma_mba.mba_busname = "mca"; 126 ma.ma_mba.mba_iot = I386_BUS_SPACE_IO; 127 ma.ma_mba.mba_memt = I386_BUS_SPACE_MEM; 128 #if NMCA > 0 129 ma.ma_mba.mba_dmat = &mca_bus_dma_tag; 130 #endif 131 ma.ma_mba.mba_mc = NULL; 132 ma.ma_mba.mba_bus = 0; 133 config_found(self, &ma.ma_mba, pcmb_print); 134 } 135 136 int 137 pcmb_print(aux, pnp) 138 void *aux; 139 const char *pnp; 140 { 141 union pcmb_attach_args *ma = aux; 142 143 if (pnp) 144 printf("%s at %s", ma->ma_name, pnp); 145 return (UNCONF); 146 } 147