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 void (*bcopy_vector)(const void *from, void *to, size_t len); 40 extern void (*bzero_vector)(void *buf, size_t len); 41 extern int (*copyin_vector)(const void *udaddr, void *kaddr, size_t len); 42 extern int (*copyout_vector)(const void *kaddr, void *udaddr, size_t len); 43 44 extern long Maxmem; 45 extern u_int atdevbase; /* offset in virtual memory of ISA io mem */ 46 extern int busdma_swi_pending; 47 extern u_int cpu_exthigh; 48 extern u_int cpu_feature; 49 extern u_int cpu_fxsr; 50 extern u_int cpu_high; 51 extern u_int cpu_id; 52 extern u_int cpu_procinfo; 53 extern char cpu_vendor[]; 54 extern u_int cyrix_did; 55 extern uint16_t *elan_mmcr; 56 extern char kstack[]; 57 #ifdef PC98 58 extern int need_pre_dma_flush; 59 extern int need_post_dma_flush; 60 #endif 61 extern char sigcode[]; 62 extern int szsigcode; 63 #ifdef COMPAT_FREEBSD4 64 extern int szfreebsd4_sigcode; 65 #endif 66 #ifdef COMPAT_43 67 extern int szosigcode; 68 #endif 69 #ifdef SWTCH_OPTIM_STATS 70 extern int stupid_switch; 71 extern int swtch_optim_stats; 72 extern int tlb_flush_count; 73 extern int lazy_flush_count; 74 extern int lazy_flush_fixup; 75 #ifdef SMP 76 extern int lazy_flush_smpfixup; 77 extern int lazy_flush_smpipi; 78 extern int lazy_flush_smpbadcr3; 79 extern int lazy_flush_smpmiss; 80 #endif 81 #endif 82 #ifdef LAZY_SWITCH 83 extern int lazy_flush_enable; 84 #endif 85 86 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 87 struct thread; 88 struct reg; 89 struct fpreg; 90 struct dbreg; 91 92 void bcopyb(const void *from, void *to, size_t len); 93 void busdma_swi(void); 94 void cpu_halt(void); 95 void cpu_reset(void); 96 void cpu_setregs(void); 97 void cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs)); 98 void doreti_iret(void) __asm(__STRING(doreti_iret)); 99 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault)); 100 void doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds)); 101 void doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault)); 102 void doreti_popl_es(void) __asm(__STRING(doreti_popl_es)); 103 void doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault)); 104 void doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs)); 105 void doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault)); 106 void enable_sse(void); 107 void fillw(int /*u_short*/ pat, void *base, size_t cnt); 108 void i486_bzero(void *buf, size_t len); 109 void i586_bcopy(const void *from, void *to, size_t len); 110 void i586_bzero(void *buf, size_t len); 111 int i586_copyin(const void *udaddr, void *kaddr, size_t len); 112 int i586_copyout(const void *kaddr, void *udaddr, size_t len); 113 void i686_pagezero(void *addr); 114 void init_AMD_Elan_sc520(void); 115 int is_physical_memory(vm_offset_t addr); 116 vm_paddr_t kvtop(void *addr); 117 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec); 118 void swi_vm(void *); 119 int user_dbreg_trap(void); 120 121 #endif /* !_MACHINE_MD_VAR_H_ */ 122