cpu.h revision 118990 
1/* $FreeBSD: head/sys/ia64/include/cpu.h 118990 2003-08-16 16:57:57Z marcel $ */
2/* From: NetBSD: cpu.h,v 1.18 1997/09/23 23:17:49 mjacob Exp */
3
4/*
5 * Copyright (c) 1988 University of Utah.
6 * Copyright (c) 1982, 1990, 1993
7 *	The Regents of the University of California.  All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * the Systems Programming Group of the University of Utah Computer
11 * Science Department.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgement:
23 *	This product includes software developed by the University of
24 *	California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * from: Utah $Hdr: cpu.h 1.16 91/03/25$
42 *
43 *	@(#)cpu.h	8.4 (Berkeley) 1/5/94
44 */
45
46#ifndef _MACHINE_CPU_H_
47#define _MACHINE_CPU_H_
48
49#include <machine/frame.h>
50
51/*
52 * Arguments to hardclock and gatherstats encapsulate the previous machine
53 * state in an opaque clockframe.
54 */
55struct clockframe {
56	struct trapframe cf_tf;
57};
58#define	CLKF_PC(cf)		((cf)->cf_tf.tf_special.iip)
59#define	CLKF_USERMODE(cf)	((CLKF_PC(cf) >> 61) < 5)
60
61/* Used by signaling code. */
62#define	cpu_getstack(td)	((td)->td_frame->tf_special.sp)
63
64#define	TRAPF_PC(tf)		((tf)->tf_special.iip)
65#define	TRAPF_CPL(tf)		((tf)->tf_special.psr & IA64_PSR_CPL)
66/*
67 * User mode for use by ast() and VM faults. It's takes into account
68 * that the gateway page is kernel space when looking at the VA, but
69 * is to be treated as user space when running with user priveleges.
70 */
71#define	TRAPF_USERMODE(tf)	\
72	((TRAPF_PC(tf) >> 61) < 5 || TRAPF_CPL(tf) == IA64_PSR_CPL_USER)
73
74/*
75 * CTL_MACHDEP definitions.
76 */
77#define	CPU_CONSDEV		1	/* dev_t: console terminal device */
78#define	CPU_ADJKERNTZ		2	/* int:	timezone offset	(seconds) */
79#define	CPU_DISRTCSET		3	/* int: disable resettodr() call */
80#define	CPU_WALLCLOCK		4	/* int:	indicates wall CMOS clock */
81#define	CPU_MAXID		5	/* valid machdep IDs */
82
83#define	CTL_MACHDEP_NAMES { \
84	{ 0, 0 }, \
85	{ "console_device", CTLTYPE_STRUCT }, \
86	{ "adjkerntz", CTLTYPE_INT }, \
87	{ "disable_rtc_set", CTLTYPE_INT }, \
88	{ "wall_cmos_clock", CTLTYPE_INT }, \
89}
90
91#ifdef _KERNEL
92
93/*
94 * Return contents of in-cpu fast counter as a sort of "bogo-time"
95 * for non-critical timing.
96 */
97#define	get_cyclecount		ia64_get_itc
98
99void	cpu_halt(void);
100void	cpu_reset(void);
101void	fork_trampoline(void);				/* MAGIC */
102void	swi_vm(void *);
103
104#endif /* _KERNEL */
105
106#endif /* _MACHINE_CPU_H_ */
107