1 /*- 2 * Copyright (c) 1998 Doug Rabson 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _MACHINE_CPUFUNC_H_ 30 #define _MACHINE_CPUFUNC_H_ 31 32 /* 33 * Required for user-space atomic.h includes 34 */ 35 static __inline void 36 powerpc_mb(void) 37 { 38 39 __asm __volatile("eieio; sync" : : : "memory"); 40 } 41 42 #ifdef _KERNEL 43 44 #include <sys/types.h> 45 46 #include <machine/psl.h> 47 48 struct thread; 49 50 #ifdef __GNUC__ 51 52 static __inline void 53 breakpoint(void) 54 { 55 56 return; 57 } 58 59 #endif 60 61 /* CPU register mangling inlines */ 62 63 static __inline void 64 mtmsr(register_t value) 65 { 66 67 __asm __volatile ("mtmsr %0" :: "r"(value)); 68 } 69 70 static __inline register_t 71 mfmsr(void) 72 { 73 register_t value; 74 75 __asm __volatile ("mfmsr %0" : "=r"(value)); 76 77 return (value); 78 } 79 80 static __inline void 81 mtsrin(vm_offset_t va, register_t value) 82 { 83 84 __asm __volatile ("mtsrin %0,%1" :: "r"(value), "r"(va)); 85 } 86 87 static __inline register_t 88 mfsrin(vm_offset_t va) 89 { 90 register_t value; 91 92 __asm __volatile ("mfsrin %0,%1" : "=r"(value) : "r"(va)); 93 94 return (value); 95 } 96 97 static __inline void 98 mtdec(register_t value) 99 { 100 101 __asm __volatile ("mtdec %0" :: "r"(value)); 102 } 103 104 static __inline register_t 105 mfdec(void) 106 { 107 register_t value; 108 109 __asm __volatile ("mfdec %0" : "=r"(value)); 110 111 return (value); 112 } 113 114 static __inline register_t 115 mfpvr(void) 116 { 117 register_t value; 118 119 __asm __volatile ("mfpvr %0" : "=r"(value)); 120 121 return (value); 122 } 123 124 static __inline void 125 eieio(void) 126 { 127 128 __asm __volatile ("eieio"); 129 } 130 131 static __inline void 132 isync(void) 133 { 134 135 __asm __volatile ("isync"); 136 } 137 138 static __inline register_t 139 intr_disable(void) 140 { 141 register_t msr; 142 143 msr = mfmsr(); 144 mtmsr(msr & ~PSL_EE); 145 return (msr); 146 } 147 148 static __inline void 149 intr_restore(register_t msr) 150 { 151 152 mtmsr(msr); 153 } 154 155 static __inline void 156 restore_intr(unsigned int msr) 157 { 158 159 mtmsr(msr); 160 } 161 162 static __inline struct pcpu * 163 powerpc_get_pcpup(void) 164 { 165 struct pcpu *ret; 166 167 __asm ("mfsprg %0, 0" : "=r"(ret)); 168 169 return(ret); 170 } 171 172 #endif /* _KERNEL */ 173 174 #endif /* !_MACHINE_CPUFUNC_H_ */ 175