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 * $FreeBSD$ 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 long Maxmem; 40 extern u_int atdevbase; /* offset in virtual memory of ISA io mem */ 41 extern void (*bcopy_vector)(const void *from, void *to, size_t len); 42 extern int busdma_swi_pending; 43 extern int (*copyin_vector)(const void *udaddr, void *kaddr, size_t len); 44 extern int (*copyout_vector)(const void *kaddr, void *udaddr, size_t len); 45 extern u_int cpu_feature; 46 extern u_int cpu_high; 47 extern u_int cpu_id; 48 extern u_int cpu_fxsr; 49 extern char cpu_vendor[]; 50 extern u_int cyrix_did; 51 extern uint16_t *elan_mmcr; 52 extern char kstack[]; 53 #ifdef PC98 54 extern int need_pre_dma_flush; 55 extern int need_post_dma_flush; 56 #endif 57 extern void (*ovbcopy_vector)(const void *from, void *to, size_t len); 58 extern char sigcode[]; 59 extern int szsigcode, szosigcode; 60 61 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 62 struct thread; 63 struct reg; 64 struct fpreg; 65 struct dbreg; 66 67 void bcopyb(const void *from, void *to, size_t len); 68 void busdma_swi(void); 69 void cpu_halt(void); 70 void cpu_reset(void); 71 void cpu_setregs(void); 72 void cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs)); 73 void doreti_iret(void) __asm(__STRING(doreti_iret)); 74 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault)); 75 void doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds)); 76 void doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault)); 77 void doreti_popl_es(void) __asm(__STRING(doreti_popl_es)); 78 void doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault)); 79 void doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs)); 80 void doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault)); 81 void fillw(int /*u_short*/ pat, void *base, size_t cnt); 82 void i486_bzero(void *buf, size_t len); 83 void i586_bcopy(const void *from, void *to, size_t len); 84 void i586_bzero(void *buf, size_t len); 85 int i586_copyin(const void *udaddr, void *kaddr, size_t len); 86 int i586_copyout(const void *kaddr, void *udaddr, size_t len); 87 void i686_pagezero(void *addr); 88 void init_AMD_Elan_sc520(void); 89 int is_physical_memory(vm_offset_t addr); 90 u_long kvtop(void *addr); 91 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec); 92 void swi_vm(void *); 93 int user_dbreg_trap(void); 94 95 #endif /* !_MACHINE_MD_VAR_H_ */ 96