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: releng/10.4/sys/i386/include/md_var.h 322205 2017-08-07 22:30:18Z jkim $
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 basemem; /* PA of original top of base memory */
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_pminfo;
48 extern u_int via_feature_rng;
49 extern u_int via_feature_xcrypt;
50 extern u_int cpu_clflush_line_size;
51 extern u_int cpu_stdext_feature;
52 extern u_int cpu_stdext_feature2;
53 extern u_int cpu_fxsr;
54 extern u_int cpu_high;
55 extern u_int cpu_id;
56 extern u_int cpu_max_ext_state_size;
57 extern u_int cpu_mxcsr_mask;
58 extern u_int cpu_procinfo;
59 extern u_int cpu_procinfo2;
60 extern char cpu_vendor[];
61 extern u_int cpu_vendor_id;
62 extern u_int cpu_mon_mwait_flags;
63 extern u_int cpu_mon_min_size;
64 extern u_int cpu_mon_max_size;
65 extern u_int cpu_maxphyaddr;
66 extern u_int cyrix_did;
67 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
68 extern int has_f00f_bug;
69 #endif
70 extern u_int hv_high;
71 extern char hv_vendor[];
72 extern char kstack[];
73 extern char sigcode[];
74 extern int szsigcode;
75 #ifdef COMPAT_FREEBSD4
76 extern int szfreebsd4_sigcode;
77 #endif
78 #ifdef COMPAT_43
79 extern int szosigcode;
80 #endif
81 extern uint32_t *vm_page_dump;
82 extern int vm_page_dump_size;
83 extern int workaround_erratum383;
84 extern int _udatasel;
85 extern int _ucodesel;
86 extern int use_xsave;
87 extern uint64_t xsave_mask;
88
89 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
90 struct pcb;
91 union savefpu;
92 struct thread;
93 struct reg;
94 struct fpreg;
95 struct dbreg;
96 struct dumperinfo;
97 struct segment_descriptor;
98
99 /*
100 * Returns the maximum physical address that can be used with the
101 * current system.
102 */
103 static __inline vm_paddr_t
104 cpu_getmaxphyaddr(void)
105 {
106 #if !defined(PAE)
107 return (0xffffffff);
108 #else
109 return ((1ULL << cpu_maxphyaddr) - 1);
110 #endif
111 }
112
113 void *alloc_fpusave(int flags);
114 void bcopyb(const void *from, void *to, size_t len);
115 void busdma_swi(void);
116 void cpu_setregs(void);
117 void cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs));
118 void doreti_iret(void) __asm(__STRING(doreti_iret));
119 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
120 void doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds));
121 void doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault));
122 void doreti_popl_es(void) __asm(__STRING(doreti_popl_es));
123 void doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault));
124 void doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs));
125 void doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault));
126 void dump_add_page(vm_paddr_t);
127 void dump_drop_page(vm_paddr_t);
128 void finishidentcpu(void);
129 void fillw(int /*u_short*/ pat, void *base, size_t cnt);
130 void fill_based_sd(struct segment_descriptor *sdp, uint32_t base);
131 void identify_hypervisor(void);
132 void initializecpu(void);
133 void initializecpucache(void);
134 bool fix_cpuid(void);
135 void i686_pagezero(void *addr);
136 void sse2_pagezero(void *addr);
137 void init_AMD_Elan_sc520(void);
138 int is_physical_memory(vm_paddr_t addr);
139 int isa_nmi(int cd);
140 vm_paddr_t kvtop(void *addr);
141 void panicifcpuunsupported(void);
142 void ppro_reenable_apic(void);
143 void printcpuinfo(void);
144 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec);
145 int user_dbreg_trap(void);
146 void minidumpsys(struct dumperinfo *);
147 union savefpu *get_pcb_user_save_td(struct thread *td);
148 union savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
149 struct pcb *get_pcb_td(struct thread *td);
150
151 #endif /* !_MACHINE_MD_VAR_H_ */
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