md_var.h revision 113090 
1/*-
2 * Copyright (c) 1995 Bruce D. Evans.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sys/i386/include/md_var.h 113090 2003-04-04 17:29:55Z des $
30 */
31
32#ifndef _MACHINE_MD_VAR_H_
33#define	_MACHINE_MD_VAR_H_
34
35/*
36 * Miscellaneous machine-dependent declarations.
37 */
38
39extern	void	(*bcopy_vector)(const void *from, void *to, size_t len);
40extern	void	(*bzero_vector)(void *buf, size_t len);
41extern	int	(*copyin_vector)(const void *udaddr, void *kaddr, size_t len);
42extern	int	(*copyout_vector)(const void *kaddr, void *udaddr, size_t len);
43
44extern	long	Maxmem;
45extern	u_int	atdevbase;	/* offset in virtual memory of ISA io mem */
46extern	int	busdma_swi_pending;
47extern	u_int	cpu_exthigh;
48extern	u_int	cpu_feature;
49extern	u_int	cpu_fxsr;
50extern	u_int	cpu_high;
51extern	u_int	cpu_id;
52extern	u_int	cpu_procinfo;
53extern	char	cpu_vendor[];
54extern	u_int	cyrix_did;
55extern	uint16_t *elan_mmcr;
56extern	char	kstack[];
57#ifdef PC98
58extern	int	need_pre_dma_flush;
59extern	int	need_post_dma_flush;
60#endif
61extern	char	sigcode[];
62extern	int	szsigcode;
63#ifdef COMPAT_FREEBSD4
64extern	int	szfreebsd4_sigcode;
65#endif
66#ifdef COMPAT_43
67extern	int	szosigcode;
68#endif
69#ifdef SWTCH_OPTIM_STATS
70extern int stupid_switch;
71extern int swtch_optim_stats;
72extern int tlb_flush_count;
73extern int lazy_flush_count;
74extern int lazy_flush_fixup;
75#ifdef SMP
76extern int lazy_flush_smpfixup;
77extern int lazy_flush_smpipi;
78extern int lazy_flush_smpbadcr3;
79extern int lazy_flush_smpmiss;
80#endif
81#endif
82#ifdef LAZY_SWITCH
83extern int lazy_flush_enable;
84#endif
85
86typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
87struct	thread;
88struct	reg;
89struct	fpreg;
90struct  dbreg;
91
92void	bcopyb(const void *from, void *to, size_t len);
93void	busdma_swi(void);
94void	cpu_halt(void);
95void	cpu_reset(void);
96void	cpu_setregs(void);
97void	cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs));
98void	doreti_iret(void) __asm(__STRING(doreti_iret));
99void	doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
100void	doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds));
101void	doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault));
102void	doreti_popl_es(void) __asm(__STRING(doreti_popl_es));
103void	doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault));
104void	doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs));
105void	doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault));
106void	enable_sse(void);
107void	fillw(int /*u_short*/ pat, void *base, size_t cnt);
108void	i486_bzero(void *buf, size_t len);
109void	i586_bcopy(const void *from, void *to, size_t len);
110void	i586_bzero(void *buf, size_t len);
111int	i586_copyin(const void *udaddr, void *kaddr, size_t len);
112int	i586_copyout(const void *kaddr, void *udaddr, size_t len);
113void	i686_pagezero(void *addr);
114void	init_AMD_Elan_sc520(void);
115int	is_physical_memory(vm_offset_t addr);
116vm_paddr_t kvtop(void *addr);
117void	setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec);
118void	swi_vm(void *);
119int     user_dbreg_trap(void);
120
121#endif /* !_MACHINE_MD_VAR_H_ */
122