cpufunc.h revision 133239
1160814Ssimon/*- 2160814Ssimon * Copyright (c) 1998 Doug Rabson 3160814Ssimon * All rights reserved. 4160814Ssimon * 5160814Ssimon * Redistribution and use in source and binary forms, with or without 6160814Ssimon * modification, are permitted provided that the following conditions 7160814Ssimon * are met: 8160814Ssimon * 1. Redistributions of source code must retain the above copyright 9280297Sjkim * notice, this list of conditions and the following disclaimer. 10160814Ssimon * 2. Redistributions in binary form must reproduce the above copyright 11160814Ssimon * notice, this list of conditions and the following disclaimer in the 12160814Ssimon * documentation and/or other materials provided with the distribution. 13160814Ssimon * 14160814Ssimon * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15160814Ssimon * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16160814Ssimon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17160814Ssimon * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18160814Ssimon * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19160814Ssimon * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20160814Ssimon * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21160814Ssimon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22160814Ssimon * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23160814Ssimon * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24160814Ssimon * SUCH DAMAGE. 25160814Ssimon * 26160814Ssimon * $FreeBSD: head/sys/powerpc/include/cpufunc.h 133239 2004-08-07 00:20:00Z grehan $ 27160814Ssimon */ 28160814Ssimon 29160814Ssimon#ifndef _MACHINE_CPUFUNC_H_ 30160814Ssimon#define _MACHINE_CPUFUNC_H_ 31160814Ssimon 32160814Ssimon/* 33160814Ssimon * Required for user-space atomic.h includes 34160814Ssimon */ 35160814Ssimonstatic __inline void 36160814Ssimonpowerpc_mb(void) 37160814Ssimon{ 38160814Ssimon 39160814Ssimon __asm __volatile("eieio; sync" : : : "memory"); 40160814Ssimon} 41160814Ssimon 42160814Ssimon#ifdef _KERNEL 43160814Ssimon 44160814Ssimon#include <sys/types.h> 45160814Ssimon 46160814Ssimon#include <machine/psl.h> 47160814Ssimon 48160814Ssimonstruct thread; 49160814Ssimon 50160814Ssimon#ifdef KDB 51160814Ssimonvoid ppc_db_trap(void); 52160814Ssimon#endif 53160814Ssimon 54160814Ssimonstatic __inline void 55160814Ssimonbreakpoint(void) 56280297Sjkim{ 57160814Ssimon#ifdef KDB 58194206Ssimon ppc_db_trap(); 59194206Ssimon#endif 60194206Ssimon} 61194206Ssimon 62160814Ssimon/* CPU register mangling inlines */ 63280297Sjkim 64280297Sjkimstatic __inline void 65160814Ssimonmtmsr(register_t value) 66160814Ssimon{ 67160814Ssimon 68160814Ssimon __asm __volatile ("mtmsr %0; isync" :: "r"(value)); 69160814Ssimon} 70280297Sjkim 71160814Ssimonstatic __inline register_t 72160814Ssimonmfmsr(void) 73160814Ssimon{ 74160814Ssimon register_t value; 75280297Sjkim 76280297Sjkim __asm __volatile ("mfmsr %0" : "=r"(value)); 77280297Sjkim 78280297Sjkim return (value); 79280297Sjkim} 80280297Sjkim 81280297Sjkimstatic __inline void 82280297Sjkimmtsrin(vm_offset_t va, register_t value) 83280297Sjkim{ 84160814Ssimon 85160814Ssimon __asm __volatile ("mtsrin %0,%1" :: "r"(value), "r"(va)); 86280297Sjkim} 87280297Sjkim 88280297Sjkimstatic __inline register_t 89280297Sjkimmfsrin(vm_offset_t va) 90280297Sjkim{ 91280297Sjkim register_t value; 92280297Sjkim 93280297Sjkim __asm __volatile ("mfsrin %0,%1" : "=r"(value) : "r"(va)); 94280297Sjkim 95160814Ssimon return (value); 96160814Ssimon} 97160814Ssimon 98160814Ssimonstatic __inline void 99160814Ssimonmtdec(register_t value) 100{ 101 102 __asm __volatile ("mtdec %0" :: "r"(value)); 103} 104 105static __inline register_t 106mfdec(void) 107{ 108 register_t value; 109 110 __asm __volatile ("mfdec %0" : "=r"(value)); 111 112 return (value); 113} 114 115static __inline register_t 116mfpvr(void) 117{ 118 register_t value; 119 120 __asm __volatile ("mfpvr %0" : "=r"(value)); 121 122 return (value); 123} 124 125static __inline void 126eieio(void) 127{ 128 129 __asm __volatile ("eieio"); 130} 131 132static __inline void 133isync(void) 134{ 135 136 __asm __volatile ("isync"); 137} 138 139static __inline register_t 140intr_disable(void) 141{ 142 register_t msr; 143 144 msr = mfmsr(); 145 mtmsr(msr & ~PSL_EE); 146 return (msr); 147} 148 149static __inline void 150intr_restore(register_t msr) 151{ 152 153 mtmsr(msr); 154} 155 156static __inline void 157restore_intr(unsigned int msr) 158{ 159 160 mtmsr(msr); 161} 162 163static __inline struct pcpu * 164powerpc_get_pcpup(void) 165{ 166 struct pcpu *ret; 167 168 __asm ("mfsprg %0, 0" : "=r"(ret)); 169 170 return(ret); 171} 172 173#endif /* _KERNEL */ 174 175#endif /* !_MACHINE_CPUFUNC_H_ */ 176