1/* $NetBSD: dma_obio.c,v 1.13 2023/12/20 05:33:18 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 * 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#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: dma_obio.c,v 1.13 2023/12/20 05:33:18 thorpej Exp $"); 34 35#include <sys/types.h> 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/errno.h> 40#include <sys/device.h> 41 42#include <sys/bus.h> 43#include <machine/autoconf.h> 44#include <machine/cpu.h> 45 46#include <dev/sbus/sbusvar.h> 47 48#include <dev/ic/lsi64854reg.h> 49#include <dev/ic/lsi64854var.h> 50 51int dmamatch_obio(device_t, cfdata_t, void *); 52void dmaattach_obio(device_t, device_t, void *); 53 54CFATTACH_DECL_NEW(dma_obio, sizeof(struct lsi64854_softc), 55 dmamatch_obio, dmaattach_obio, NULL, NULL); 56 57int 58dmamatch_obio(device_t parent, cfdata_t cf, void *aux) 59{ 60 union obio_attach_args *uoba = aux; 61 struct obio4_attach_args *oba; 62 63 if (uoba->uoba_isobio4 == 0) 64 return 0; 65 66 oba = &uoba->uoba_oba4; 67 return bus_space_probe(oba->oba_bustag, oba->oba_paddr, 68 4, /* probe size */ 69 0, /* offset */ 70 0, /* flags */ 71 NULL, NULL); 72} 73 74 75void 76dmaattach_obio(device_t parent, device_t self, void *aux) 77{ 78 struct lsi64854_softc *sc = device_private(self); 79 union obio_attach_args *uoba = aux; 80 struct obio4_attach_args *oba = &uoba->uoba_oba4; 81 82 sc->sc_dev = self; 83 sc->sc_bustag = oba->oba_bustag; 84 sc->sc_dmatag = oba->oba_dmatag; 85 86 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 87 4 * sizeof(uint32_t), 88 0, &sc->sc_regs) != 0) { 89 aprint_error(": cannot map registers\n"); 90 return; 91 } 92 93 /* Any point in setting `sc_burst' to anything here? */ 94 sc->sc_channel = L64854_CHANNEL_SCSI; 95 lsi64854_attach(sc); 96} 97