sys/arch/arc/jazz/timer_jazzio.c

   1 /*      $NetBSD: timer_jazzio.c,v 1.9 2006/06/24 03:50:38 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 1.9 2006/06/24 03:50:38 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 }