blob: 7f7285fb83160e7f00e04a1dc020ba6a06a11ee6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright (c) 2010, Intel Corporation.
* All rights reserved.
*/
#ifndef _SYS_APIC_TIMER_H
#define _SYS_APIC_TIMER_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/time.h>
#define IA32_DEADLINE_TSC_MSR 0x6E0
/* Timer Vector Table register */
#define APIC_LOCAL_TIMER 0xc8
/* timer vector table */
#define AV_PERIODIC 0x20000 /* Set timer mode to periodic */
#define AV_DEADLINE 0x40000 /* Set timer mode to deadline */
#define APIC_TIMER_MODE_ONESHOT 0x0
#define APIC_TIMER_MODE_PERIODIC 0x1
#define APIC_TIMER_MODE_DEADLINE 0x2 /* TSC-Deadline timer mode */
extern int apic_oneshot;
extern uint_t apic_nsec_per_intr;
extern uint_t apic_hertz_count;
extern uint64_t apic_ticks_per_SFnsecs;
/*
* Use scaled-fixed-point arithmetic to calculate apic ticks.
* Round when dividing (by adding half of divisor to dividend)
* for one extra bit of precision.
*/
#define SF (1ULL<<20) /* Scaling Factor: scale by 2^20 */
#define APIC_TICKS_TO_NSECS(ticks) ((((int64_t)(ticks) * SF) + \
apic_ticks_per_SFnsecs / 2) / \
apic_ticks_per_SFnsecs);
#define APIC_NSECS_TO_TICKS(nsecs) (((int64_t)(nsecs) * \
apic_ticks_per_SFnsecs + (SF/2)) / SF)
extern int apic_timer_init(int);
extern void apic_timer_reprogram(hrtime_t);
extern void apic_timer_enable(void);
extern void apic_timer_disable(void);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_APIC_TIMER_H */
|
