1/* 	$NetBSD: cpuvar.h,v 1.53 2020/07/14 00:45:53 yamaguchi 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#include "opt_xen.h"
103#endif /* defined(_KERNEL_OPT) */
104
105extern int (*x86_ipi)(int, int, int);
106int x86_ipi_init(int);
107int x86_ipi_startup(int, int);
108void x86_errata(void);
109
110void identifycpu(struct cpu_info *);
111void identifycpu_cpuids(struct cpu_info *);
112void cpu_init(struct cpu_info *);
113void cpu_init_tss(struct cpu_info *);
114void cpu_init_first(void);
115void cpu_init_idt(struct cpu_info *);
116
117void x86_cpu_idle_init(void);
118void x86_cpu_idle_halt(void);
119void x86_cpu_idle_mwait(void);
120#ifdef XEN
121void x86_cpu_idle_xen(void);
122#endif
123
124void	cpu_get_tsc_freq(struct cpu_info *);
125void	pat_init(struct cpu_info *);
126
127extern int cpu_vendor;
128extern bool x86_mp_online;
129
130extern uint32_t cpu_feature[7];
131
132#endif /* _KERNEL */
133
134#endif /* !_X86_CPUVAR_H_ */