x86_var.h revision 322490
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: stable/11/sys/x86/include/x86_var.h 322490 2017-08-14 06:46:15Z sephe $ 30 */ 31 32#ifndef _X86_X86_VAR_H_ 33#define _X86_X86_VAR_H_ 34 35/* 36 * Miscellaneous machine-dependent declarations. 37 */ 38 39extern long Maxmem; 40extern u_int basemem; 41extern int busdma_swi_pending; 42extern u_int cpu_exthigh; 43extern u_int cpu_feature; 44extern u_int cpu_feature2; 45extern u_int amd_feature; 46extern u_int amd_feature2; 47extern u_int amd_pminfo; 48extern u_int via_feature_rng; 49extern u_int via_feature_xcrypt; 50extern u_int cpu_clflush_line_size; 51extern u_int cpu_stdext_feature; 52extern u_int cpu_stdext_feature2; 53extern u_int cpu_fxsr; 54extern u_int cpu_high; 55extern u_int cpu_id; 56extern u_int cpu_max_ext_state_size; 57extern u_int cpu_mxcsr_mask; 58extern u_int cpu_procinfo; 59extern u_int cpu_procinfo2; 60extern char cpu_vendor[]; 61extern u_int cpu_vendor_id; 62extern u_int cpu_mon_mwait_flags; 63extern u_int cpu_mon_min_size; 64extern u_int cpu_mon_max_size; 65extern u_int cpu_maxphyaddr; 66extern char ctx_switch_xsave[]; 67extern u_int hv_high; 68extern char hv_vendor[]; 69extern char kstack[]; 70extern char sigcode[]; 71extern int szsigcode; 72extern int vm_page_dump_size; 73extern int workaround_erratum383; 74extern int _udatasel; 75extern int _ucodesel; 76extern int _ucode32sel; 77extern int _ufssel; 78extern int _ugssel; 79extern int use_xsave; 80extern uint64_t xsave_mask; 81 82struct pcb; 83struct thread; 84struct reg; 85struct fpreg; 86struct dbreg; 87struct dumperinfo; 88struct trapframe; 89 90/* 91 * The interface type of the interrupt handler entry point cannot be 92 * expressed in C. Use simplest non-variadic function type as an 93 * approximation. 94 */ 95typedef void alias_for_inthand_t(void); 96 97/* 98 * Returns the maximum physical address that can be used with the 99 * current system. 100 */ 101static __inline vm_paddr_t 102cpu_getmaxphyaddr(void) 103{ 104#if defined(__i386__) && !defined(PAE) 105 return (0xffffffff); 106#else 107 return ((1ULL << cpu_maxphyaddr) - 1); 108#endif 109} 110 111void *alloc_fpusave(int flags); 112void busdma_swi(void); 113bool cpu_mwait_usable(void); 114void cpu_probe_amdc1e(void); 115void cpu_setregs(void); 116void dump_add_page(vm_paddr_t); 117void dump_drop_page(vm_paddr_t); 118void finishidentcpu(void); 119void identify_cpu(void); 120void identify_hypervisor(void); 121void initializecpu(void); 122void initializecpucache(void); 123bool fix_cpuid(void); 124void fillw(int /*u_short*/ pat, void *base, size_t cnt); 125int is_physical_memory(vm_paddr_t addr); 126int isa_nmi(int cd); 127void nmi_call_kdb(u_int cpu, u_int type, struct trapframe *frame); 128void nmi_call_kdb_smp(u_int type, struct trapframe *frame); 129void nmi_handle_intr(u_int type, struct trapframe *frame); 130void pagecopy(void *from, void *to); 131void printcpuinfo(void); 132int user_dbreg_trap(void); 133int minidumpsys(struct dumperinfo *); 134struct pcb *get_pcb_td(struct thread *td); 135 136#endif 137