1 /* $NetBSD: timer_jazzio.c,v 1.3 2002/10/02 04:59:49 thorpej Exp $ */ 2 /* $OpenBSD: clock.c,v 1.6 1998/10/15 21:30:15 imp Exp $ */ 3 4 /* 5 * Copyright (c) 1997 Per Fogelstrom. 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1992, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department and Ralph Campbell. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * from: Utah Hdr: clock.c 1.18 91/01/21 43 * 44 * from: @(#)clock.c 8.1 (Berkeley) 6/10/93 45 */ 46 47 #include <sys/param.h> 48 #include <sys/kernel.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 52 #include <machine/autoconf.h> 53 #include <machine/platform.h> 54 55 #include <dev/isa/isavar.h> 56 57 #include <arc/arc/timervar.h> 58 #include <arc/jazz/jazziovar.h> 59 #include <arc/jazz/timer_jazziovar.h> 60 61 struct timer_jazzio_softc { 62 struct device sc_dev; 63 }; 64 65 /* Definition of the driver for autoconfig. */ 66 int timer_jazzio_match __P((struct device *, struct cfdata *, void *)); 67 void timer_jazzio_attach __P((struct device *, struct device *, void *)); 68 69 CFATTACH_DECL(timer_jazzio, sizeof(struct timer_jazzio_softc), 70 timer_jazzio_match, timer_jazzio_attach, NULL, NULL); 71 72 /* Jazz timer access code */ 73 void timer_jazzio_init __P((struct device *sc)); 74 75 struct timerfns timerfns_jazzio = { 76 timer_jazzio_init, 77 }; 78 79 struct timer_jazzio_config *timer_jazzio_conf = NULL; 80 int timer_jazzio_found = 0; 81 82 int 83 timer_jazzio_match(parent, match, aux) 84 struct device *parent; 85 struct cfdata *match; 86 void *aux; 87 { 88 struct jazzio_attach_args *ja = aux; 89 90 /* make sure that we're looking for this type of device. */ 91 if (strcmp(ja->ja_name, "timer") != 0) 92 return (0); 93 94 if (timer_jazzio_found) 95 return (0); 96 97 return (1); 98 } 99 100 void 101 timer_jazzio_attach(parent, self, aux) 102 struct device *parent; 103 struct device *self; 104 void *aux; 105 { 106 struct timer_jazzio_softc *sc = (struct timer_jazzio_softc *)self; 107 108 if (timer_jazzio_conf == NULL) 109 panic("timer_jazzio_conf isn't initialized"); 110 111 printf("\n"); 112 113 (*platform->set_intr)(timer_jazzio_conf->tjc_intr_mask, 114 timer_jazzio_conf->tjc_intr, 1); 115 116 timerattach(&sc->sc_dev, &timerfns_jazzio); 117 118 timer_jazzio_found = 1; 119 } 120 121 void 122 timer_jazzio_init(sc) 123 struct device *sc; 124 { 125 (*timer_jazzio_conf->tjc_init)(1000 / hz); 126 } 127