1 /*- 2 * Copyright (c) 1995 Bruce D. Evans. 3 * Copyright (c) 2008 The DragonFly Project. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the author nor the names of contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: src/sys/amd64/include/md_var.h,v 1.71 2004/01/29 00:05:03 peter Exp $ 31 * $DragonFly: src/sys/platform/pc64/include/md_var.h,v 1.5 2008/08/29 17:07:17 dillon Exp $ 32 */ 33 34 #ifndef _MACHINE_MD_VAR_H_ 35 #define _MACHINE_MD_VAR_H_ 36 37 #include <machine/globaldata.h> 38 39 /* 40 * Miscellaneous machine-dependent declarations. 41 */ 42 43 extern u_long atdevbase; /* offset in virtual memory of ISA io mem */ 44 extern u_int basemem; 45 extern int busdma_swi_pending; 46 extern void (*cpu_idle_hook)(void); 47 extern u_int cpu_exthigh; 48 extern u_int amd_feature; 49 extern u_int amd_feature2; 50 extern u_int cpu_fxsr; 51 extern u_int cpu_high; 52 extern u_int cpu_id; 53 extern u_int cpu_procinfo; 54 extern u_int cpu_procinfo2; 55 extern char cpu_vendor[]; 56 extern u_int cpu_vendor_id; 57 extern char kstack[]; 58 extern char sigcode[]; 59 extern int szsigcode; 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 struct __mcontext; 67 68 void busdma_swi(void); 69 void cpu_gdinit (struct mdglobaldata *gd, int cpu); 70 void cpu_idle_restore (void); /* cannot be called from C */ 71 void cpu_setregs(void); 72 void doreti_iret(void) __asm(__STRING(doreti_iret)); 73 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault)); 74 void enable_sse(void); 75 void fillw(int /*u_short*/ pat, void *base, size_t cnt); 76 void pagezero(void *addr); 77 int isa_nmi(int cd); 78 void pagecopy(void *from, void *to); 79 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist); 80 int user_dbreg_trap(void); 81 void fpstate_drop(struct thread *td); 82 83 void npxpush(struct __mcontext *mctx); 84 void npxpop(struct __mcontext *mctx); 85 86 void cpu_heavy_restore (void); 87 void cpu_kthread_restore (void);/* cannot be called from C */ 88 89 void cpu_exit_switch (struct thread *next); 90 91 void syscall2 (struct trapframe *); 92 93 #endif /* !_MACHINE_MD_VAR_H_ */ 94