1 /* $OpenBSD: cpu.h,v 1.40 2001/12/08 02:24:06 art Exp $ */ 2 /* $NetBSD: cpu.h,v 1.35 1996/05/05 19:29:26 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 40 */ 41 42 #ifndef _I386_CPU_H_ 43 #define _I386_CPU_H_ 44 45 /* 46 * Definitions unique to i386 cpu support. 47 */ 48 #include <machine/psl.h> 49 #include <machine/frame.h> 50 #include <machine/segments.h> 51 52 /* 53 * definitions of cpu-dependent requirements 54 * referenced in generic code 55 */ 56 #define cpu_swapin(p) /* nothing */ 57 58 /* 59 * Arguments to hardclock, softclock and statclock 60 * encapsulate the previous machine state in an opaque 61 * clockframe; for now, use generic intrframe. 62 * 63 * XXX intrframe has a lot of gunk we don't need. 64 */ 65 #define clockframe intrframe 66 67 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 68 #define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0) 69 #define CLKF_PC(frame) ((frame)->if_eip) 70 #define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL) 71 72 /* 73 * Preempt the current process if in interrupt from user mode, 74 * or after the current trap/syscall if in system mode. 75 */ 76 int want_resched; /* resched() was called */ 77 #define need_resched() (want_resched = 1, setsoftast()) 78 79 /* 80 * Give a profiling tick to the current process when the user profiling 81 * buffer pages are invalid. On the i386, request an ast to send us 82 * through trap(), marking the proc as needing a profiling tick. 83 */ 84 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 85 86 /* 87 * Notify the current process (p) that it has a signal pending, 88 * process as soon as possible. 89 */ 90 #define signotify(p) setsoftast() 91 92 /* 93 * We need a machine-independent name for this. 94 */ 95 #define DELAY(x) delay(x) 96 void delay __P((int)); 97 98 #if defined(I586_CPU) || defined(I686_CPU) 99 /* 100 * High resolution clock support (Pentium only) 101 */ 102 void calibrate_cyclecounter __P((void)); 103 #ifndef HZ 104 extern u_quad_t pentium_base_tsc; 105 #define CPU_CLOCKUPDATE(otime, ntime) \ 106 do { \ 107 if (pentium_mhz) { \ 108 __asm __volatile("cli\n" \ 109 "movl (%3), %%eax\n" \ 110 "movl %%eax, (%2)\n" \ 111 "movl 4(%3), %%eax\n" \ 112 "movl %%eax, 4(%2)\n" \ 113 ".byte 0xf, 0x31\n" \ 114 "sti\n" \ 115 "#%0 %1 %2 %3" \ 116 : "=m" (*otime), \ 117 "=A" (pentium_base_tsc) \ 118 : "c" (otime), "b" (ntime)); \ 119 } \ 120 else { \ 121 *(otime) = *(ntime); \ 122 } \ 123 } while (0) 124 #endif 125 #endif 126 127 /* 128 * pull in #defines for kinds of processors 129 */ 130 #include <machine/cputypes.h> 131 132 struct cpu_nocpuid_nameclass { 133 int cpu_vendor; 134 const char *cpu_vendorname; 135 const char *cpu_name; 136 int cpu_class; 137 void (*cpu_setup) __P((const char *, int, int)); 138 }; 139 140 struct cpu_cpuid_nameclass { 141 const char *cpu_id; 142 int cpu_vendor; 143 const char *cpu_vendorname; 144 struct cpu_cpuid_family { 145 int cpu_class; 146 const char *cpu_models[CPU_MAXMODEL+2]; 147 void (*cpu_setup) __P((const char *, int, int)); 148 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 149 }; 150 151 struct cpu_cpuid_feature { 152 int feature_bit; 153 const char *feature_name; 154 }; 155 156 #ifdef _KERNEL 157 extern int cpu; 158 extern int cpu_class; 159 extern int cpu_feature; 160 extern int cpu_apmwarn; 161 extern int cpu_apmhalt; 162 extern int cpuid_level; 163 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 164 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 165 166 #if defined(I586_CPU) || defined(I686_CPU) 167 extern int pentium_mhz; 168 #endif 169 170 #ifdef I586_CPU 171 /* F00F bug fix stuff for pentium cpu */ 172 extern int cpu_f00f_bug; 173 void fix_f00f __P((void)); 174 #endif 175 176 /* dkcsum.c */ 177 void dkcsumattach __P((void)); 178 179 /* machdep.c */ 180 void dumpconf __P((void)); 181 void cpu_reset __P((void)); 182 void i386_proc0_tss_ldt_init __P((void)); 183 184 /* locore.s */ 185 struct region_descriptor; 186 void lgdt __P((struct region_descriptor *)); 187 void fillw __P((short, void *, size_t)); 188 short fusword __P((u_short *)); 189 int susword __P((u_short *t, u_short)); 190 191 struct pcb; 192 void savectx __P((struct pcb *)); 193 void switch_exit __P((struct proc *)); 194 void proc_trampoline __P((void)); 195 196 /* clock.c */ 197 void initrtclock __P((void)); 198 void startrtclock __P((void)); 199 void rtcdrain __P((void *)); 200 201 /* npx.c */ 202 void npxdrop __P((void)); 203 void npxsave __P((void)); 204 205 #if defined(MATH_EMULATE) || defined(GPL_MATH_EMULATE) 206 /* math_emulate.c */ 207 int math_emulate __P((struct trapframe *)); 208 #endif 209 210 #ifdef USER_LDT 211 /* sys_machdep.h */ 212 void i386_user_cleanup __P((struct pcb *)); 213 int i386_get_ldt __P((struct proc *, void *, register_t *)); 214 int i386_set_ldt __P((struct proc *, void *, register_t *)); 215 #endif 216 217 /* isa_machdep.c */ 218 void isa_defaultirq __P((void)); 219 int isa_nmi __P((void)); 220 221 /* pmap.c */ 222 void pmap_bootstrap __P((vm_offset_t)); 223 224 /* vm_machdep.c */ 225 int kvtop __P((caddr_t)); 226 227 #ifdef VM86 228 /* vm86.c */ 229 void vm86_gpfault __P((struct proc *, int)); 230 #endif /* VM86 */ 231 232 #ifdef GENERIC 233 /* swapgeneric.c */ 234 void setconf __P((void)); 235 #endif /* GENERIC */ 236 237 #endif /* _KERNEL */ 238 239 /* 240 * CTL_MACHDEP definitions. 241 */ 242 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 243 #define CPU_BIOS 2 /* BIOS variables */ 244 #define CPU_BLK2CHR 3 /* convert blk maj into chr one */ 245 #define CPU_CHR2BLK 4 /* convert chr maj into blk one */ 246 #define CPU_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */ 247 #define CPU_CPUVENDOR 6 /* cpuid vendor string */ 248 #define CPU_CPUID 7 /* cpuid */ 249 #define CPU_CPUFEATURE 8 /* cpuid features */ 250 #define CPU_APMWARN 9 /* APM battery warning percentage */ 251 #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ 252 #define CPU_APMHALT 11 /* halt -p hack */ 253 #define CPU_MAXID 12 /* number of valid machdep ids */ 254 255 #define CTL_MACHDEP_NAMES { \ 256 { 0, 0 }, \ 257 { "console_device", CTLTYPE_STRUCT }, \ 258 { "bios", CTLTYPE_INT }, \ 259 { "blk2chr", CTLTYPE_STRUCT }, \ 260 { "chr2blk", CTLTYPE_STRUCT }, \ 261 { "allowaperture", CTLTYPE_INT }, \ 262 { "cpuvendor", CTLTYPE_STRING }, \ 263 { "cpuid", CTLTYPE_INT }, \ 264 { "cpufeature", CTLTYPE_INT }, \ 265 { "apmwarn", CTLTYPE_INT }, \ 266 { "kbdreset", CTLTYPE_INT }, \ 267 { "apmhalt", CTLTYPE_INT }, \ 268 } 269 270 #endif /* !_I386_CPU_H_ */ 271