cpu.h revision 115913 
1/* $FreeBSD: head/sys/ia64/include/cpu.h 115913 2003-06-06 23:27:18Z 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_ROOT_DEVICE		2	/* string: root device name */
79#define	CPU_BOOTED_KERNEL	3	/* string: booted kernel name */
80#define	CPU_ADJKERNTZ		4	/* int:	timezone offset	(seconds) */
81#define	CPU_DISRTCSET		5	/* int: disable resettodr() call */
82#define	CPU_WALLCLOCK		6	/* int:	indicates wall CMOS clock */
83#define	CPU_MAXID		7	/* valid machdep IDs */
84
85#define	CTL_MACHDEP_NAMES { \
86	{ 0, 0 }, \
87	{ "console_device", CTLTYPE_STRUCT }, \
88	{ "root_device", CTLTYPE_STRING }, \
89	{ "booted_kernel", CTLTYPE_STRING }, \
90	{ "adjkerntz", CTLTYPE_INT }, \
91	{ "disable_rtc_set", CTLTYPE_INT }, \
92	{ "wall_cmos_clock", CTLTYPE_INT }, \
93}
94
95#ifdef _KERNEL
96
97struct pcb;
98struct thread;
99struct reg;
100struct rpb;
101struct trapframe;
102
103extern struct rpb *hwrpb;
104extern volatile int mc_expected, mc_received;
105
106int	badaddr(void *, size_t);
107int	badaddr_read(void *, size_t, void *);
108u_int64_t console_restart(u_int64_t, u_int64_t, u_int64_t);
109int	do_ast(struct trapframe *);
110void	dumpconf(void);
111void	frametoreg(struct trapframe *, struct reg *);
112long	fswintrberr(void);				/* MAGIC */
113int	ia64_highfp_drop(struct thread *);
114int	ia64_highfp_load(struct thread *);
115int	ia64_highfp_save(struct thread *);
116void	ia64_init(void);
117int	ia64_pa_access(u_long);
118void	init_prom_interface(struct rpb*);
119void	interrupt(u_int64_t, struct trapframe *);
120void	machine_check(unsigned long, struct trapframe *, unsigned long,
121    unsigned long);
122u_int64_t hwrpb_checksum(void);
123void	hwrpb_restart_setup(void);
124void	regdump(struct trapframe *);
125void	regtoframe(struct reg *, struct trapframe *);
126void	set_iointr(void (*)(void *, unsigned long));
127void	fork_trampoline(void);				/* MAGIC */
128int	syscall(struct trapframe *);
129void	trap(int vector, struct trapframe *framep);
130void	ia64_probe_sapics(void);
131int	ia64_count_cpus(void);
132void	map_gateway_page(void);
133void	map_pal_code(void);
134void	map_port_space(void);
135void	cpu_mp_add(uint, uint, uint);
136
137/*
138 * Return contents of in-cpu fast counter as a sort of "bogo-time"
139 * for non-critical timing.
140 */
141static __inline u_int64_t
142get_cyclecount(void)
143{
144	return (ia64_get_itc());
145}
146
147#endif /* _KERNEL */
148
149#endif /* _MACHINE_CPU_H_ */
150