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 _X86_X86_VAR_H_ 33 #define _X86_X86_VAR_H_ 34 35 /* 36 * Miscellaneous machine-dependent declarations. 37 */ 38 39 extern long Maxmem; 40 extern u_int basemem; 41 extern int busdma_swi_pending; 42 extern u_int cpu_exthigh; 43 extern u_int cpu_feature; 44 extern u_int cpu_feature2; 45 extern u_int amd_feature; 46 extern u_int amd_feature2; 47 extern u_int amd_rascap; 48 extern u_int amd_pminfo; 49 extern u_int amd_extended_feature_extensions; 50 extern u_int via_feature_rng; 51 extern u_int via_feature_xcrypt; 52 extern u_int cpu_clflush_line_size; 53 extern u_int cpu_stdext_feature; 54 extern u_int cpu_stdext_feature2; 55 extern u_int cpu_stdext_feature3; 56 extern uint64_t cpu_ia32_arch_caps; 57 extern u_int cpu_fxsr; 58 extern u_int cpu_high; 59 extern u_int cpu_id; 60 extern u_int cpu_max_ext_state_size; 61 extern u_int cpu_mxcsr_mask; 62 extern u_int cpu_procinfo; 63 extern u_int cpu_procinfo2; 64 extern char cpu_vendor[]; 65 extern u_int cpu_vendor_id; 66 extern u_int cpu_mon_mwait_flags; 67 extern u_int cpu_mon_min_size; 68 extern u_int cpu_mon_max_size; 69 extern u_int cpu_maxphyaddr; 70 extern char ctx_switch_xsave[]; 71 extern u_int hv_high; 72 extern char hv_vendor[]; 73 extern char kstack[]; 74 extern char sigcode[]; 75 extern int szsigcode; 76 extern int vm_page_dump_size; 77 extern int workaround_erratum383; 78 extern int _udatasel; 79 extern int _ucodesel; 80 extern int _ucode32sel; 81 extern int _ufssel; 82 extern int _ugssel; 83 extern int use_xsave; 84 extern uint64_t xsave_mask; 85 extern u_int max_apic_id; 86 extern int pti; 87 extern int hw_ibrs_active; 88 89 struct pcb; 90 struct thread; 91 struct reg; 92 struct fpreg; 93 struct dbreg; 94 struct dumperinfo; 95 struct trapframe; 96 97 /* 98 * The interface type of the interrupt handler entry point cannot be 99 * expressed in C. Use simplest non-variadic function type as an 100 * approximation. 101 */ 102 typedef void alias_for_inthand_t(void); 103 104 /* 105 * Returns the maximum physical address that can be used with the 106 * current system. 107 */ 108 static __inline vm_paddr_t 109 cpu_getmaxphyaddr(void) 110 { 111 #if defined(__i386__) && !defined(PAE) 112 return (0xffffffff); 113 #else 114 return ((1ULL << cpu_maxphyaddr) - 1); 115 #endif 116 } 117 118 void *alloc_fpusave(int flags); 119 void busdma_swi(void); 120 bool cpu_mwait_usable(void); 121 void cpu_probe_amdc1e(void); 122 void cpu_setregs(void); 123 bool disable_wp(void); 124 void restore_wp(bool old_wp); 125 void dump_add_page(vm_paddr_t); 126 void dump_drop_page(vm_paddr_t); 127 void finishidentcpu(void); 128 void identify_cpu1(void); 129 void identify_cpu2(void); 130 void identify_hypervisor(void); 131 void initializecpu(void); 132 void initializecpucache(void); 133 bool fix_cpuid(void); 134 void fillw(int /*u_short*/ pat, void *base, size_t cnt); 135 int is_physical_memory(vm_paddr_t addr); 136 int isa_nmi(int cd); 137 void handle_ibrs_entry(void); 138 void handle_ibrs_exit(void); 139 void hw_ibrs_recalculate(void); 140 void nmi_call_kdb(u_int cpu, u_int type, struct trapframe *frame); 141 void nmi_call_kdb_smp(u_int type, struct trapframe *frame); 142 void nmi_handle_intr(u_int type, struct trapframe *frame); 143 void pagecopy(void *from, void *to); 144 void printcpuinfo(void); 145 int pti_get_default(void); 146 int user_dbreg_trap(void); 147 int minidumpsys(struct dumperinfo *); 148 struct pcb *get_pcb_td(struct thread *td); 149 150 #endif 151