xnu-1699.22.73.tar.gz

[apple/xnu.git] / osfmk / i386 / rtclock_protos.h

diff --git a/osfmk/i386/rtclock_protos.h b/osfmk/i386/rtclock_protos.h
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+/*
+ * Copyright (c) 2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * @OSF_COPYRIGHT@
+ */
+/*
+ * @APPLE_FREE_COPYRIGHT@
+ */
+/*
+ *     File:           rtclock_protos.h
+ *     Purpose:        C Routines for handling the machine dependent
+ *                             real-time clock.
+ */
+
+#ifndef _I386_RTCLOCK_PROTOS_H_
+#define _I386_RTCLOCK_PROTOS_H_
+
+typedef struct pal_rtc_nanotime pal_rtc_nanotime_t;
+extern uint64_t tsc_rebase_abs_time;
+
+extern void    _rtc_nanotime_adjust(
+                       uint64_t                tsc_base_delta,
+                       pal_rtc_nanotime_t      *dst);
+
+extern uint64_t        _rtc_nanotime_read(
+                       pal_rtc_nanotime_t      *rntp,
+                       int                     slow);
+
+extern void    rtclock_intr(x86_saved_state_t *regs);
+
+
+/*
+ * Timer control.
+ */
+typedef struct {
+       void     (*config)(void);
+       uint64_t (*set)   (uint64_t, uint64_t);
+} rtc_timer_t;
+extern rtc_timer_t     *rtc_timer;
+
+extern void            rtc_timer_init(void);
+
+#endif /* _I386_RTCLOCK_PROTOS_H_ */