x86_var.h revision 333361 
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 333361 2018-05-08 10:56:06Z kib $
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	amd_extended_feature_extensions;
49extern	u_int	via_feature_rng;
50extern	u_int	via_feature_xcrypt;
51extern	u_int	cpu_clflush_line_size;
52extern	u_int	cpu_stdext_feature;
53extern	u_int	cpu_stdext_feature2;
54extern	u_int	cpu_stdext_feature3;
55extern	uint64_t cpu_ia32_arch_caps;
56extern	u_int	cpu_fxsr;
57extern	u_int	cpu_high;
58extern	u_int	cpu_id;
59extern	u_int	cpu_max_ext_state_size;
60extern	u_int	cpu_mxcsr_mask;
61extern	u_int	cpu_procinfo;
62extern	u_int	cpu_procinfo2;
63extern	char	cpu_vendor[];
64extern	u_int	cpu_vendor_id;
65extern	u_int	cpu_mon_mwait_flags;
66extern	u_int	cpu_mon_min_size;
67extern	u_int	cpu_mon_max_size;
68extern	u_int	cpu_maxphyaddr;
69extern	char	ctx_switch_xsave[];
70extern	u_int	hv_high;
71extern	char	hv_vendor[];
72extern	char	kstack[];
73extern	char	sigcode[];
74extern	int	szsigcode;
75extern	int	vm_page_dump_size;
76extern	int	workaround_erratum383;
77extern	int	_udatasel;
78extern	int	_ucodesel;
79extern	int	_ucode32sel;
80extern	int	_ufssel;
81extern	int	_ugssel;
82extern	int	use_xsave;
83extern	uint64_t xsave_mask;
84extern	int	pti;
85extern	int	hw_ibrs_active;
86
87struct	pcb;
88struct	thread;
89struct	reg;
90struct	fpreg;
91struct  dbreg;
92struct	dumperinfo;
93struct	trapframe;
94
95/*
96 * The interface type of the interrupt handler entry point cannot be
97 * expressed in C.  Use simplest non-variadic function type as an
98 * approximation.
99 */
100typedef void alias_for_inthand_t(void);
101
102/*
103 * Returns the maximum physical address that can be used with the
104 * current system.
105 */
106static __inline vm_paddr_t
107cpu_getmaxphyaddr(void)
108{
109#if defined(__i386__) && !defined(PAE)
110	return (0xffffffff);
111#else
112	return ((1ULL << cpu_maxphyaddr) - 1);
113#endif
114}
115
116void	*alloc_fpusave(int flags);
117void	busdma_swi(void);
118bool	cpu_mwait_usable(void);
119void	cpu_probe_amdc1e(void);
120void	cpu_setregs(void);
121void	dump_add_page(vm_paddr_t);
122void	dump_drop_page(vm_paddr_t);
123void	finishidentcpu(void);
124void	identify_cpu1(void);
125void	identify_cpu2(void);
126void	identify_hypervisor(void);
127void	initializecpu(void);
128void	initializecpucache(void);
129bool	fix_cpuid(void);
130void	fillw(int /*u_short*/ pat, void *base, size_t cnt);
131int	is_physical_memory(vm_paddr_t addr);
132int	isa_nmi(int cd);
133void	handle_ibrs_entry(void);
134void	handle_ibrs_exit(void);
135void	hw_ibrs_recalculate(void);
136void	nmi_call_kdb(u_int cpu, u_int type, struct trapframe *frame);
137void	nmi_call_kdb_smp(u_int type, struct trapframe *frame);
138void	nmi_handle_intr(u_int type, struct trapframe *frame);
139void	pagecopy(void *from, void *to);
140void	printcpuinfo(void);
141int	pti_get_default(void);
142int	user_dbreg_trap(void);
143int	minidumpsys(struct dumperinfo *);
144struct pcb *get_pcb_td(struct thread *td);
145
146#endif
147