1/* $NetBSD: cpuvar.h,v 1.51 2019/02/11 14:59:32 cherry Exp $ */
2
3/*-
4 * Copyright (c) 2000, 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by RedBack Networks Inc.
9 *
10 * Author: Bill Sommerfeld
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/*
35 * Copyright (c) 1999 Stefan Grefen
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the NetBSD
48 * Foundation, Inc. and its contributors.
49 * 4. Neither the name of The NetBSD Foundation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
54 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR AND CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 */
65
66#ifndef _X86_CPUVAR_H_
67#define _X86_CPUVAR_H_
68
69struct cpu_info;
70struct cpu_functions {
71#ifndef XENPV
72 int (*start)(struct cpu_info *, paddr_t);
73#else /* XENPV */
74 int (*start)(struct cpu_info *, vaddr_t);
75#endif /* XENPV */
76 int (*stop)(struct cpu_info *);
77 void (*cleanup)(struct cpu_info *);
78};
79
80extern const struct cpu_functions mp_cpu_funcs;
81
82#define CPU_ROLE_SP 0
83#define CPU_ROLE_BP 1
84#define CPU_ROLE_AP 2
85
86struct cpu_attach_args {
87 int cpu_id;
88 int cpu_number;
89 int cpu_role;
90 const struct cpu_functions *cpu_func;
91};
92
93struct cpufeature_attach_args {
94 struct cpu_info *ci;
95 const char *name;
96};
97
98#ifdef _KERNEL
99#include <sys/kcpuset.h>
100#if defined(_KERNEL_OPT)
101#include "opt_multiprocessor.h"
102#endif /* defined(_KERNEL_OPT) */
103
104extern int (*x86_ipi)(int, int, int);
105int x86_ipi_init(int);
106int x86_ipi_startup(int, int);
107void x86_errata(void);
108
109void identifycpu(struct cpu_info *);
110void identifycpu_cpuids(struct cpu_info *);
111void cpu_init(struct cpu_info *);
112void cpu_init_tss(struct cpu_info *);
113void cpu_init_first(void);
114
115void x86_cpu_idle_init(void);
116void x86_cpu_idle_halt(void);
117void x86_cpu_idle_mwait(void);
118#ifdef XENPV
119void x86_cpu_idle_xen(void);
120#endif
121
122void cpu_get_tsc_freq(struct cpu_info *);
123void pat_init(struct cpu_info *);
124
125extern int cpu_vendor;
126extern bool x86_mp_online;
127
128extern uint32_t cpu_feature[7];
129
130#endif /* _KERNEL */
131
132#endif /* !_X86_CPUVAR_H_ */
133