1 /* $NetBSD: dma_obio.c,v 1.8 2003/07/15 00:04:53 lukem 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: dma_obio.c,v 1.8 2003/07/15 00:04:53 lukem Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/errno.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 50 #include <machine/bus.h> 51 #include <machine/autoconf.h> 52 #include <machine/cpu.h> 53 54 #include <dev/sbus/sbusvar.h> 55 56 #include <dev/ic/lsi64854reg.h> 57 #include <dev/ic/lsi64854var.h> 58 59 int dmamatch_obio __P((struct device *, struct cfdata *, void *)); 60 void dmaattach_obio __P((struct device *, struct device *, void *)); 61 62 CFATTACH_DECL(dma_obio, sizeof(struct lsi64854_softc), 63 dmamatch_obio, dmaattach_obio, NULL, NULL); 64 65 int 66 dmamatch_obio(parent, cf, aux) 67 struct device *parent; 68 struct cfdata *cf; 69 void *aux; 70 { 71 union obio_attach_args *uoba = aux; 72 struct obio4_attach_args *oba; 73 74 if (uoba->uoba_isobio4 == 0) 75 return (0); 76 77 oba = &uoba->uoba_oba4; 78 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 79 4, /* probe size */ 80 0, /* offset */ 81 0, /* flags */ 82 NULL, NULL)); 83 } 84 85 86 void 87 dmaattach_obio(parent, self, aux) 88 struct device *parent, *self; 89 void *aux; 90 { 91 union obio_attach_args *uoba = aux; 92 struct obio4_attach_args *oba = &uoba->uoba_oba4; 93 struct lsi64854_softc *sc = (void *)self; 94 95 sc->sc_bustag = oba->oba_bustag; 96 sc->sc_dmatag = oba->oba_dmatag; 97 98 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 99 4 * sizeof(u_int32_t), 100 0, &sc->sc_regs) != 0) { 101 printf("dmaattach_obio: cannot map registers\n"); 102 return; 103 } 104 105 /* Any point in setting `sc_burst' to anything here? */ 106 sc->sc_channel = L64854_CHANNEL_SCSI; 107 lsi64854_attach(sc); 108 } 109