1 /* $NetBSD: pcmb.c,v 1.19 2010/04/28 19:17:04 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 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 * 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 /* 33 * "Driver" for PCI-MCA Bridges. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: pcmb.c,v 1.19 2010/04/28 19:17:04 dyoung Exp $"); 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <machine/bus.h> 45 46 #include <dev/mca/mcavar.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcireg.h> 50 51 #include <dev/pci/pcidevs.h> 52 53 #include "mca.h" 54 55 int pcmbmatch(device_t, cfdata_t, void *); 56 void pcmbattach(device_t, device_t, void *); 57 58 CFATTACH_DECL_NEW(pcmb, 0, pcmbmatch, pcmbattach, NULL, NULL); 59 60 void pcmb_callback(device_t); 61 62 int 63 pcmbmatch(device_t parent, cfdata_t match, void *aux) 64 { 65 struct pci_attach_args *pa = aux; 66 67 /* 68 * Match anything which claims to be PCI-MCA bridge. 69 */ 70 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE 71 && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC) 72 return (1); 73 74 return (0); 75 } 76 77 void 78 pcmbattach(device_t parent, device_t self, void *aux) 79 { 80 struct pci_attach_args *pa = aux; 81 char devinfo[256]; 82 83 aprint_naive("\n"); 84 aprint_normal("\n"); 85 86 /* 87 * Just print out a description and defer configuration 88 * until all PCI devices have been attached. 89 */ 90 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 91 aprint_normal_dev(self, "%s (rev. 0x%02x)\n", devinfo, 92 PCI_REVISION(pa->pa_class)); 93 94 config_defer(self, pcmb_callback); 95 } 96 97 void 98 pcmb_callback(device_t self) 99 { 100 struct mcabus_attach_args ma; 101 102 /* 103 * Attach MCA bus behind this bridge. 104 */ 105 ma.mba_iot = x86_bus_space_io; 106 ma.mba_memt = x86_bus_space_mem; 107 #if NMCA > 0 108 ma.mba_dmat = &mca_bus_dma_tag; 109 #endif 110 ma.mba_mc = NULL; 111 ma.mba_bus = 0; 112 config_found_ia(self, "mcabus", &ma, mcabusprint); 113 } 114