1 /* $NetBSD: timer_jazzio.c,v 1.10 2008/07/05 08:46:25 tsutsui Exp $ */ 2 /* $OpenBSD: clock.c,v 1.6 1998/10/15 21:30:15 imp Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department and Ralph Campbell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: clock.c 1.18 91/01/21 37 * 38 * from: @(#)clock.c 8.1 (Berkeley) 6/10/93 39 */ 40 41 /* 42 * Copyright (c) 1997 Per Fogelstrom. 43 * Copyright (c) 1988 University of Utah. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * the Systems Programming Group of the University of Utah Computer 47 * Science Department and Ralph Campbell. 48 * 49 * Redistribution and use in source and binary forms, with or without 50 * modification, are permitted provided that the following conditions 51 * are met: 52 * 1. Redistributions of source code must retain the above copyright 53 * notice, this list of conditions and the following disclaimer. 54 * 2. Redistributions in binary form must reproduce the above copyright 55 * notice, this list of conditions and the following disclaimer in the 56 * documentation and/or other materials provided with the distribution. 57 * 3. All advertising materials mentioning features or use of this software 58 * must display the following acknowledgement: 59 * This product includes software developed by the University of 60 * California, Berkeley and its contributors. 61 * 4. Neither the name of the University nor the names of its contributors 62 * may be used to endorse or promote products derived from this software 63 * without specific prior written permission. 64 * 65 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 66 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 67 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 68 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 69 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 70 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 71 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 72 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 73 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 74 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 75 * SUCH DAMAGE. 76 * 77 * from: Utah Hdr: clock.c 1.18 91/01/21 78 * 79 * from: @(#)clock.c 8.1 (Berkeley) 6/10/93 80 */ 81 82 #include <sys/cdefs.h> 83 __KERNEL_RCSID(0, "$NetBSD: timer_jazzio.c,v 1.10 2008/07/05 08:46:25 tsutsui Exp $"); 84 85 #include <sys/param.h> 86 #include <sys/kernel.h> 87 #include <sys/systm.h> 88 #include <sys/device.h> 89 90 #include <machine/autoconf.h> 91 #include <machine/platform.h> 92 93 #include <dev/isa/isavar.h> 94 95 #include <arc/arc/timervar.h> 96 #include <arc/jazz/jazziovar.h> 97 #include <arc/jazz/timer_jazziovar.h> 98 99 /* Definition of the driver for autoconfig. */ 100 static int timer_jazzio_match(device_t , cfdata_t, void *); 101 static void timer_jazzio_attach(device_t , device_t , void *); 102 103 CFATTACH_DECL_NEW(timer_jazzio, 0, 104 timer_jazzio_match, timer_jazzio_attach, NULL, NULL); 105 106 /* Jazz timer access code */ 107 static void timer_jazzio_init(device_t); 108 109 struct timerfns timerfns_jazzio = { 110 timer_jazzio_init, 111 }; 112 113 struct timer_jazzio_config *timer_jazzio_conf = NULL; 114 struct evcnt timer_jazzio_ev = 115 EVCNT_INITIALIZER(EVCNT_TYPE_INTR, NULL, "jazzio", "timer"); 116 117 static int timer_jazzio_found = 0; 118 119 static int 120 timer_jazzio_match(device_t parent, cfdata_t cf, void *aux) 121 { 122 struct jazzio_attach_args *ja = aux; 123 124 /* make sure that we're looking for this type of device. */ 125 if (strcmp(ja->ja_name, "timer") != 0) 126 return 0; 127 128 if (timer_jazzio_found) 129 return 0; 130 131 return 1; 132 } 133 134 static void 135 timer_jazzio_attach(device_t parent, device_t self, void *aux) 136 { 137 138 if (timer_jazzio_conf == NULL) 139 panic("timer_jazzio_conf isn't initialized"); 140 141 aprint_normal("\n"); 142 143 evcnt_attach_static(&timer_jazzio_ev); 144 (*platform->set_intr)(timer_jazzio_conf->tjc_intr_mask, 145 timer_jazzio_conf->tjc_intr, ARC_INTPRI_TIMER_INT); 146 147 timerattach(self, &timerfns_jazzio); 148 149 timer_jazzio_found = 1; 150 } 151 152 void 153 timer_jazzio_init(struct device *sc) 154 { 155 156 (*timer_jazzio_conf->tjc_init)(1000 / hz); 157 } 158