arch/x86/kernel/platform/i86pc/include/sys/machclock.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_MACHCLOCK_H
  28 #define _SYS_MACHCLOCK_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * tod module name and operations
  38  */
  39
  40 struct tod_ops;
  41 typedef struct tod_ops tod_ops_t;
  42
  43 /*
  44  * TOD Ops.
  45  * The only functions that _must_ be defined are the tod_get() and
  46  * tod_set() functions.  All others may be unused, and need to be
  47  * checked for NULL before using.
  48  */
  49 struct tod_ops {
  50         int             tod_version;
  51         timestruc_t     (*tod_get)(tod_ops_t *);
  52         void            (*tod_set)(tod_ops_t *, timestruc_t);
  53         uint_t          (*tod_set_watchdog_timer)(tod_ops_t *, int);
  54         uint_t          (*tod_clear_watchdog_timer)(tod_ops_t *);
  55         void            (*tod_set_wake_alarm)(tod_ops_t *, int);
  56         void            (*tod_clear_wake_alarm)(tod_ops_t *);
  57         struct tod_ops  *tod_next;
  58 };
  59
  60 #define TOD_OPS_VERSION 1
  61
  62 extern tod_ops_t        *tod_ops;
  63 extern char             *tod_module_name;
  64
  65 #define TODOP_GET(top)          ((top)->tod_get(top))
  66 #define TODOP_SET(top, ts)      ((top)->tod_set(top, ts))
  67 #define TODOP_SETWD(top, nsec)  ((top)->tod_set_watchdog_timer(top, nsec))
  68 #define TODOP_CLRWD(top)        ((top)->tod_clear_watchdog_timer(top))
  69 #define TODOP_SETWAKE(top, nsec) ((top)->tod_set_wake_alarm(top, nsec))
  70 #define TODOP_CLRWAKE(top)      ((top)->tod_clear_wake_alarm(top))
  71
  72 #ifdef  __cplusplus
  73 }
  74 #endif
  75
  76 #endif  /* _SYS_MACHCLOCK_H */