1 /* $NetBSD: cpufunc.h,v 1.14 2013/12/08 18:00:51 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum, and by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _X86_CPUFUNC_H_ 33 #define _X86_CPUFUNC_H_ 34 35 /* 36 * Functions to provide access to x86-specific instructions. 37 */ 38 39 #include <sys/cdefs.h> 40 #include <sys/types.h> 41 42 #include <machine/segments.h> 43 #include <machine/specialreg.h> 44 45 #ifdef _KERNEL 46 47 void x86_pause(void); 48 void x86_lfence(void); 49 void x86_sfence(void); 50 void x86_mfence(void); 51 void x86_flush(void); 52 #ifndef XEN 53 void x86_patch(bool); 54 #endif 55 void invlpg(vaddr_t); 56 void lidt(struct region_descriptor *); 57 void lldt(u_short); 58 void ltr(u_short); 59 void lcr0(u_long); 60 u_long rcr0(void); 61 void lcr2(vaddr_t); 62 vaddr_t rcr2(void); 63 void lcr3(vaddr_t); 64 vaddr_t rcr3(void); 65 void lcr4(vaddr_t); 66 vaddr_t rcr4(void); 67 void lcr8(vaddr_t); 68 vaddr_t rcr8(void); 69 void tlbflush(void); 70 void tlbflushg(void); 71 void dr0(void *, uint32_t, uint32_t, uint32_t); 72 vaddr_t rdr6(void); 73 void ldr6(vaddr_t); 74 void wbinvd(void); 75 void breakpoint(void); 76 void x86_hlt(void); 77 void x86_stihlt(void); 78 u_int x86_getss(void); 79 void fldcw(void *); 80 void fnclex(void); 81 void fninit(void); 82 void fnsave(void *); 83 void fnstcw(void *); 84 void fnstsw(void *); 85 void fp_divide_by_0(void); 86 void frstor(void *); 87 void fwait(void); 88 void clts(void); 89 void stts(void); 90 void fldummy(const double *); 91 void fxsave(void *); 92 void fxrstor(void *); 93 void x86_monitor(const void *, uint32_t, uint32_t); 94 void x86_mwait(uint32_t, uint32_t); 95 void x86_ldmxcsr(void *); 96 /* x86_cpuid2() writes four 32bit values, %eax, %ebx, %ecx and %edx */ 97 #define x86_cpuid(a,b) x86_cpuid2((a),0,(b)) 98 void x86_cpuid2(uint32_t, uint32_t, uint32_t *); 99 100 /* Use read_psl, write_psl when saving and restoring interrupt state. */ 101 void x86_disable_intr(void); 102 void x86_enable_intr(void); 103 u_long x86_read_psl(void); 104 void x86_write_psl(u_long); 105 106 /* Use read_flags, write_flags to adjust other members of %eflags. */ 107 u_long x86_read_flags(void); 108 void x86_write_flags(u_long); 109 110 void x86_reset(void); 111 112 /* 113 * Some of the undocumented AMD64 MSRs need a 'passcode' to access. 114 * 115 * See LinuxBIOSv2: src/cpu/amd/model_fxx/model_fxx_init.c 116 */ 117 118 #define OPTERON_MSR_PASSCODE 0x9c5a203aU 119 120 uint64_t rdmsr(u_int); 121 uint64_t rdmsr_locked(u_int, u_int); 122 int rdmsr_safe(u_int, uint64_t *); 123 uint64_t rdtsc(void); 124 uint64_t rdpmc(u_int); 125 void wrmsr(u_int, uint64_t); 126 void wrmsr_locked(u_int, u_int, uint64_t); 127 void setfs(int); 128 void setusergs(int); 129 130 /* Extended processor state functions (for AVX registers etc) */ 131 132 uint64_t rdxcr(uint32_t); /* xgetbv */ 133 void wrxcr(uint32_t, uint64_t); /* xsetgv */ 134 void xrstor(const void *, uint64_t); 135 void xsave(void *, uint64_t); 136 void xsaveopt(const void *, uint64_t); 137 138 #endif /* _KERNEL */ 139 140 #endif /* !_X86_CPUFUNC_H_ */ 141