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 * $Id: md_var.h,v 1.23 1998/02/01 23:00:53 bde 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 #ifdef BOUNCE_BUFFERS 42 extern char *bouncememory; 43 extern int bouncepages; 44 #endif 45 extern int busdma_swi_pending; 46 extern u_int cpu_feature; 47 extern u_int cpu_high; 48 extern u_int cpu_id; 49 extern char cpu_vendor[]; 50 extern u_int cyrix_did; 51 extern char kstack[]; 52 #ifdef BOUNCE_BUFFERS 53 extern int maxbkva; 54 #endif 55 #ifdef PC98 56 extern int need_pre_dma_flush; 57 extern int need_post_dma_flush; 58 #endif 59 extern void (*netisrs[32]) __P((void)); 60 extern int nfs_diskless_valid; 61 extern char sigcode[]; 62 extern int szsigcode; 63 64 typedef void alias_for_inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss)); 65 struct proc; 66 struct reg; 67 68 void bcopyb __P((const void *from, void *to, size_t len)); 69 void busdma_swi __P((void)); 70 void cpu_halt __P((void)); 71 void cpu_power_down __P((void)); 72 void cpu_reset __P((void)); 73 void cpu_switch_load_fs __P((void)) __asm(__STRING(cpu_switch_load_fs)); 74 void cpu_switch_load_gs __P((void)) __asm(__STRING(cpu_switch_load_gs)); 75 void doreti_iret __P((void)) __asm(__STRING(doreti_iret)); 76 void doreti_iret_fault __P((void)) __asm(__STRING(doreti_iret_fault)); 77 void doreti_popl_ds __P((void)) __asm(__STRING(doreti_popl_ds)); 78 void doreti_popl_ds_fault __P((void)) __asm(__STRING(doreti_popl_ds_fault)); 79 void doreti_popl_es __P((void)) __asm(__STRING(doreti_popl_es)); 80 void doreti_popl_es_fault __P((void)) __asm(__STRING(doreti_popl_es_fault)); 81 int fill_regs __P((struct proc *p, struct reg *regs)); 82 void fillw __P((int /*u_short*/ pat, void *base, size_t cnt)); 83 int is_physical_memory __P((vm_offset_t addr)); 84 u_long kvtop __P((void *addr)); 85 void setidt __P((int idx, alias_for_inthand_t *func, int typ, int dpl, 86 int selec)); 87 void swi_vm __P((void)); 88 void userconfig __P((void)); 89 void vm_bounce_init __P((void)); 90 int vm_page_zero_idle __P((void)); 91 92 #endif /* !_MACHINE_MD_VAR_H_ */ 93