1 /* $NetBSD: pcmb.c,v 1.15 2006/11/16 01:32:39 christos 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 1.15 2006/11/16 01:32:39 christos 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(struct device *, struct cfdata *, void *); 63 void pcmbattach(struct device *, struct device *, void *); 64 65 CFATTACH_DECL(pcmb, sizeof(struct device), 66 pcmbmatch, pcmbattach, NULL, NULL); 67 68 void pcmb_callback(struct device *); 69 70 int 71 pcmbmatch(struct device *parent, struct cfdata *match, 72 void *aux) 73 { 74 struct pci_attach_args *pa = aux; 75 76 /* 77 * Match anything which claims to be PCI-MCA bridge. 78 */ 79 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE 80 && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC) 81 return (1); 82 83 return (0); 84 } 85 86 void 87 pcmbattach(struct device *parent, struct device *self, void *aux) 88 { 89 struct pci_attach_args *pa = aux; 90 char devinfo[256]; 91 92 aprint_naive("\n"); 93 aprint_normal("\n"); 94 95 /* 96 * Just print out a description and defer configuration 97 * until all PCI devices have been attached. 98 */ 99 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 100 aprint_normal("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo, 101 PCI_REVISION(pa->pa_class)); 102 103 config_defer(self, pcmb_callback); 104 } 105 106 void 107 pcmb_callback(struct device *self) 108 { 109 struct mcabus_attach_args ma; 110 111 /* 112 * Attach MCA bus behind this bridge. 113 */ 114 ma.mba_iot = X86_BUS_SPACE_IO; 115 ma.mba_memt = X86_BUS_SPACE_MEM; 116 #if NMCA > 0 117 ma.mba_dmat = &mca_bus_dma_tag; 118 #endif 119 ma.mba_mc = NULL; 120 ma.mba_bus = 0; 121 config_found_ia(self, "mcabus", &ma, mcabusprint); 122 } 123