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: src/sys/i386/include/md_var.h,v 1.10.2.5 1999/09/05 08:11:53 peter Exp $
30 */
31
32 #ifndef _MACHINE_MD_VAR_H_
33 #define _MACHINE_MD_VAR_H_
34
35 /*
36 * Miscellaneous machine-dependent declarations.
37 */
38
39 extern int Maxmem;
40 extern u_int atdevbase; /* offset in virtual memory of ISA io mem */
41 extern u_long cpu_feature;
42 extern u_long cpu_high;
43 extern u_long cpu_id;
44 extern u_long cyrix_did;
45 extern char cpu_vendor[];
46 extern char etext[];
47 extern char kstack[];
48 extern void (*netisrs[32]) __P((void));
49 extern int nfs_diskless_valid;
50 extern char sigcode[];
51 extern int szsigcode;
52 extern int busdma_swi_pending;
53
54 typedef void alias_for_inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss));
55 struct proc;
56 struct reg;
57
58 void bcopyb __P((const void *from, void *to, size_t len));
59 void cpu_reset __P((void));
60 void cpu_halt __P((void));
61 void doreti_iret __P((void)) __asm(__STRING(doreti_iret));
62 void doreti_iret_fault __P((void)) __asm(__STRING(doreti_iret_fault));
63 void doreti_popl_ds __P((void)) __asm(__STRING(doreti_popl_ds));
64 void doreti_popl_ds_fault __P((void)) __asm(__STRING(doreti_popl_ds_fault));
65 void doreti_popl_es __P((void)) __asm(__STRING(doreti_popl_es));
66 void doreti_popl_es_fault __P((void)) __asm(__STRING(doreti_popl_es_fault));
67 int fill_regs __P((struct proc *p, struct reg *regs));
68 void fillw __P((int /*u_short*/ pat, void *base, size_t cnt));
69 int fusword __P((void *base));
70 int is_physical_memory __P((vm_offset_t addr));
71 u_long kvtop __P((void *addr));
72 void setidt __P((int idx, alias_for_inthand_t *func, int typ, int dpl,
73 int selec));
74 void swi_vm __P((void));
75 void userconfig __P((void));
76 void vm_bounce_init __P((void));
77 int vm_page_zero_idle __P((void));
78 void busdma_swi __P((void));
79
80 #ifdef PC98
81 extern int need_pre_dma_flush;
82 extern int need_post_dma_flush;
83 #endif
84
85 #endif /* !_MACHINE_MD_VAR_H_ */
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