1 /* $NetBSD: mainbus.c,v 1.4 2002/10/02 04:22:54 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 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/param.h> 40 #include <sys/device.h> 41 #include <sys/systm.h> 42 43 #define _M68K_BUS_DMA_PRIVATE 44 #include <machine/autoconf.h> 45 46 static int mainbus_match __P((struct device *, struct cfdata *, void *)); 47 static void mainbus_attach __P((struct device *, struct device *, void *)); 48 static int mainbus_search __P((struct device *, struct cfdata *, void *)); 49 50 CFATTACH_DECL(mainbus, sizeof(struct device), 51 mainbus_match, mainbus_attach, NULL, NULL); 52 53 struct m68k_bus_dma_tag next68k_bus_dma_tag = { 54 NULL, /* _cookie */ 55 56 0, /* _boundary */ 57 58 _bus_dmamap_create, /* _dmamap_create */ 59 _bus_dmamap_destroy, /* _dmamap_destroy */ 60 _bus_dmamap_load_direct, /* _dmamap_load */ 61 _bus_dmamap_load_mbuf_direct, /* _dmamap_load_mbuf */ 62 _bus_dmamap_load_uio_direct, /* _dmamap_load_uio */ 63 _bus_dmamap_load_raw_direct, /* _dmamap_load_raw */ 64 _bus_dmamap_unload, /* _dmamap_unload */ 65 _bus_dmamap_sync, /* _dmamap_sync */ 66 67 _bus_dmamem_alloc, /* _dmamem_alloc */ 68 _bus_dmamem_free, /* _dmamem_free */ 69 _bus_dmamem_map, /* _dmamem_map */ 70 _bus_dmamem_unmap, /* _dmamem_unmap */ 71 _bus_dmamem_mmap /* _dmamem_mmap */ 72 }; 73 74 static int mainbus_attached = 0; 75 76 static int 77 mainbus_match(parent, cf, aux) 78 struct device *parent; 79 struct cfdata *cf; 80 void *aux; 81 { 82 /* Allow only one instance. */ 83 if (mainbus_attached) 84 return (0); 85 86 return 1; 87 } 88 89 static void 90 mainbus_attach(parent, self, aux) 91 struct device *parent, *self; 92 void *aux; 93 { 94 struct mainbus_attach_args mba; 95 96 printf("\n"); 97 98 mba.mba_dmat = &next68k_bus_dma_tag; 99 100 /* Search for and attach children. */ 101 config_search(mainbus_search, self, &mba); 102 103 mainbus_attached = 1; 104 } 105 106 static int 107 mainbus_search(parent, cf, aux) 108 struct device *parent; 109 struct cfdata *cf; 110 void *aux; 111 { 112 if (config_match(parent, cf, aux) > 0) 113 config_attach(parent, cf, aux, NULL); 114 return 0; 115 } 116