sys/arch/x86/include/cpuvar.h

   1 /*      $NetBSD: cpuvar.h,v 1.46 2012/04/20 22:23:24 rmind 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
  69 struct cpu_functions {
  70 #ifndef XEN
  71         int (*start)(struct cpu_info *, paddr_t);
  72 #else /* XEN */
  73         int (*start)(struct cpu_info *, vaddr_t);
  74 #endif /* XEN */
  75         int (*stop)(struct cpu_info *);
  76         void (*cleanup)(struct cpu_info *);
  77 };
  78
  79 extern const struct cpu_functions mp_cpu_funcs;
  80
  81 #define CPU_ROLE_SP     0
  82 #define CPU_ROLE_BP     1
  83 #define CPU_ROLE_AP     2
  84
  85 struct cpu_attach_args {
  86         int cpu_id;
  87         int cpu_number;
  88         int cpu_role;
  89         const struct cpu_functions *cpu_func;
  90 };
  91
  92 struct cpufeature_attach_args {
  93         struct cpu_info *ci;
  94         const char *name;
  95 };
  96
  97 #ifdef _KERNEL
  98 #include <sys/kcpuset.h>
  99 #if defined(_KERNEL_OPT)
 100 #include "opt_multiprocessor.h"
 101 #endif /* defined(_KERNEL_OPT) */
 102
 103 int x86_ipi(int, int, int);
 104 void x86_self_ipi(int);
 105 int x86_ipi_init(int);
 106 int x86_ipi_startup(int, int);
 107 void x86_errata(void);
 108
 109 void identifycpu(struct cpu_info *);
 110 void identifycpu_cpuids(struct cpu_info *);
 111 void cpu_init(struct cpu_info *);
 112 void cpu_init_tss(struct cpu_info *);
 113 void cpu_init_first(void);
 114
 115 void x86_cpu_idle_init(void);
 116 void x86_cpu_idle_halt(void);
 117 void x86_cpu_idle_mwait(void);
 118 #ifdef XEN
 119 void x86_cpu_idle_xen(void);
 120 #endif
 121
 122 void    cpu_get_tsc_freq(struct cpu_info *);
 123 void    pat_init(struct cpu_info *);
 124
 125 extern int cpu_vendor;
 126 extern bool x86_mp_online;
 127
 128 extern uint32_t cpu_feature[5];
 129
 130 #endif /* _KERNEL */
 131
 132 #endif /* !_X86_CPUVAR_H_ */