2 * Copyright (c) 1995 Bruce D. Evans.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * $FreeBSD: src/sys/i386/include/md_var.h,v 1.35.2.4 2003/01/22 20:14:53 jhb Exp $
30 * $DragonFly: src/sys/platform/pc32/include/md_var.h,v 1.12 2003/11/03 17:11:19 dillon Exp $
33 #ifndef _MACHINE_MD_VAR_H_
34 #define _MACHINE_MD_VAR_H_
37 * Miscellaneous machine-dependent declarations.
40 extern vm_paddr_t Maxmem;
41 extern u_int atdevbase; /* offset in virtual memory of ISA io mem */
42 extern void (*bcopy_vector) (const void *from, void *to, size_t len);
43 extern int busdma_swi_pending;
44 extern int (*copyin_vector) (const void *udaddr, void *kaddr,
46 extern int (*copyout_vector) (const void *kaddr, void *udaddr,
48 extern u_int cpu_exthigh;
49 extern u_int cpu_feature;
50 extern u_int cpu_fxsr;
51 extern u_int cpu_high;
53 extern u_int cpu_procinfo;
54 extern char cpu_vendor[];
55 extern u_int cyrix_did;
58 extern int need_pre_dma_flush;
59 extern int need_post_dma_flush;
61 extern int nfs_diskless_valid;
62 extern void (*ovbcopy_vector) (const void *from, void *to, size_t len);
63 extern char sigcode[];
66 typedef void alias_for_inthand_t (u_int cs, u_int ef, u_int esp, u_int ss);
74 void bcopyb (const void *from, void *to, size_t len);
75 void busdma_swi (void);
76 void cpu_gdinit (struct mdglobaldata *gd, int cpu);
79 void cpu_reset (void);
80 void cpu_setregs (void);
81 void cpu_switch_load_gs (void) __asm(__STRING(cpu_switch_load_gs));
82 void cpu_heavy_restore (void); /* cannot be called from C */
83 void cpu_lwkt_restore (void); /* cannot be called from C */
84 void cpu_idle_restore (void); /* cannot be called from C */
85 void cpu_kthread_restore (void);/* cannot be called from C */
86 void cpu_exit_idleptd (void); /* disassociate proc MMU */
87 void cpu_exit_switch (struct thread *next);
88 void doreti_iret (void) __asm(__STRING(doreti_iret));
89 void doreti_iret_fault (void) __asm(__STRING(doreti_iret_fault));
90 void doreti_popl_ds (void) __asm(__STRING(doreti_popl_ds));
91 void doreti_popl_ds_fault (void) __asm(__STRING(doreti_popl_ds_fault));
92 void doreti_popl_es (void) __asm(__STRING(doreti_popl_es));
93 void doreti_popl_es_fault (void) __asm(__STRING(doreti_popl_es_fault));
94 void doreti_popl_fs (void) __asm(__STRING(doreti_popl_fs));
95 void doreti_popl_fs_fault (void) __asm(__STRING(doreti_popl_fs_fault));
96 void enable_sse (void);
97 int fill_fpregs (struct proc *, struct fpreg *);
98 int fill_regs (struct proc *p, struct reg *regs);
99 int fill_dbregs (struct proc *p, struct dbreg *dbregs);
100 void fillw (int /*u_short*/ pat, void *base, size_t cnt);
101 void i486_bzero (volatile void *buf, size_t len);
102 void i586_bzero (volatile void *buf, size_t len);
103 void i586_bcopy (const void *from, void *to, size_t len);
104 int i586_copyin (const void *udaddr, void *kaddr, size_t len);
105 int i586_copyout (const void *kaddr, void *udaddr, size_t len);
106 void i686_pagezero (void *addr);
107 void init_AMD_Elan_sc520(void);
108 int is_physical_memory (vm_offset_t addr);
109 vm_paddr_t kvtop (void *addr);
110 void setidt (int idx, alias_for_inthand_t *func, int typ, int dpl,
112 void userconfig (void);
113 int user_dbreg_trap (void);
114 int vm_page_zero_idle (void);
116 #endif /* !_MACHINE_MD_VAR_H_ */