amd64 - Add via variable decls to md_var.h
[dragonfly.git] / sys / platform / pc64 / include / md_var.h
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1/*-
2 * Copyright (c) 1995 Bruce D. Evans.
c8fe38ae 3 * Copyright (c) 2008 The DragonFly Project.
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4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/sys/amd64/include/md_var.h,v 1.71 2004/01/29 00:05:03 peter Exp $
c8fe38ae 31 * $DragonFly: src/sys/platform/pc64/include/md_var.h,v 1.5 2008/08/29 17:07:17 dillon Exp $
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32 */
33
34#ifndef _MACHINE_MD_VAR_H_
35#define _MACHINE_MD_VAR_H_
36
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37#include <machine/globaldata.h>
38
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39/*
40 * Miscellaneous machine-dependent declarations.
41 */
42
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43extern u_long atdevbase; /* offset in virtual memory of ISA io mem */
44extern u_int basemem;
45extern int busdma_swi_pending;
e774ca6d 46extern void (*cpu_idle_hook)(void);
bfc09ba0 47extern void cpu_idle(void);
39923942 48extern u_int cpu_exthigh;
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49extern u_int via_feature_rng;
50extern u_int via_feature_xcrypt;
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51extern u_int amd_feature;
52extern u_int amd_feature2;
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53extern u_int cpu_fxsr;
54extern u_int cpu_high;
55extern u_int cpu_id;
56extern u_int cpu_procinfo;
c8fe38ae 57extern u_int cpu_procinfo2;
39923942 58extern char cpu_vendor[];
a2a636cc 59extern u_int cpu_vendor_id;
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60extern char kstack[];
61extern char sigcode[];
62extern int szsigcode;
63
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64typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
65struct thread;
66struct reg;
67struct fpreg;
68struct dbreg;
1b251f0a 69struct __mcontext;
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70
71void busdma_swi(void);
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72void cpu_gdinit (struct mdglobaldata *gd, int cpu);
73void cpu_idle_restore (void); /* cannot be called from C */
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74void cpu_setregs(void);
75void doreti_iret(void) __asm(__STRING(doreti_iret));
76void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
77void enable_sse(void);
78void fillw(int /*u_short*/ pat, void *base, size_t cnt);
79void pagezero(void *addr);
c8fe38ae 80void pagecopy(void *from, void *to);
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81void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
82int user_dbreg_trap(void);
83void fpstate_drop(struct thread *td);
84
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85void npxpush(struct __mcontext *mctx);
86void npxpop(struct __mcontext *mctx);
87
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88void cpu_heavy_restore (void);
89void cpu_kthread_restore (void);/* cannot be called from C */
90
91void cpu_exit_switch (struct thread *next);
92
93void syscall2 (struct trapframe *);
94
39923942 95#endif /* !_MACHINE_MD_VAR_H_ */