1 /* $NetBSD: dma_obio.c,v 1.7 2002/10/02 16:02:14 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 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/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/errno.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/autoconf.h> 49 #include <machine/cpu.h> 50 51 #include <dev/sbus/sbusvar.h> 52 53 #include <dev/ic/lsi64854reg.h> 54 #include <dev/ic/lsi64854var.h> 55 56 int dmamatch_obio __P((struct device *, struct cfdata *, void *)); 57 void dmaattach_obio __P((struct device *, struct device *, void *)); 58 59 CFATTACH_DECL(dma_obio, sizeof(struct lsi64854_softc), 60 dmamatch_obio, dmaattach_obio, NULL, NULL); 61 62 int 63 dmamatch_obio(parent, cf, aux) 64 struct device *parent; 65 struct cfdata *cf; 66 void *aux; 67 { 68 union obio_attach_args *uoba = aux; 69 struct obio4_attach_args *oba; 70 71 if (uoba->uoba_isobio4 == 0) 72 return (0); 73 74 oba = &uoba->uoba_oba4; 75 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 76 4, /* probe size */ 77 0, /* offset */ 78 0, /* flags */ 79 NULL, NULL)); 80 } 81 82 83 void 84 dmaattach_obio(parent, self, aux) 85 struct device *parent, *self; 86 void *aux; 87 { 88 union obio_attach_args *uoba = aux; 89 struct obio4_attach_args *oba = &uoba->uoba_oba4; 90 struct lsi64854_softc *sc = (void *)self; 91 92 sc->sc_bustag = oba->oba_bustag; 93 sc->sc_dmatag = oba->oba_dmatag; 94 95 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 96 4 * sizeof(u_int32_t), 97 0, &sc->sc_regs) != 0) { 98 printf("dmaattach_obio: cannot map registers\n"); 99 return; 100 } 101 102 /* Any point in setting `sc_burst' to anything here? */ 103 sc->sc_channel = L64854_CHANNEL_SCSI; 104 lsi64854_attach(sc); 105 } 106