1 /* $OpenBSD: cpu.h,v 1.49 2009/07/22 20:33:13 deraadt Exp $ */ 2 /* $NetBSD: cpu.h,v 1.1 2003/04/26 18:39:39 fvdl 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 36 */ 37 38 #ifndef _AMD64_CPU_H_ 39 #define _AMD64_CPU_H_ 40 41 /* 42 * Definitions unique to x86-64 cpu support. 43 */ 44 #include <machine/frame.h> 45 #include <machine/segments.h> 46 #include <machine/tss.h> 47 #include <machine/intrdefs.h> 48 #include <machine/cacheinfo.h> 49 50 #ifdef MULTIPROCESSOR 51 #include <machine/i82489reg.h> 52 #include <machine/i82489var.h> 53 #endif 54 55 #include <sys/device.h> 56 #include <sys/lock.h> 57 #include <sys/sched.h> 58 #include <sys/sensors.h> 59 60 #ifdef _KERNEL 61 62 struct cpu_info { 63 struct device *ci_dev; 64 struct cpu_info *ci_self; 65 struct schedstate_percpu ci_schedstate; /* scheduler state */ 66 struct cpu_info *ci_next; 67 68 struct proc *ci_curproc; 69 struct simplelock ci_slock; 70 u_int ci_cpuid; 71 u_int ci_apicid; 72 u_int32_t ci_randseed; 73 74 u_int64_t ci_scratch; 75 76 struct proc *ci_fpcurproc; 77 int ci_fpsaving; 78 79 struct pcb *ci_curpcb; 80 struct pcb *ci_idle_pcb; 81 int ci_idle_tss_sel; 82 83 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 84 u_int32_t ci_ipending; 85 int ci_ilevel; 86 int ci_idepth; 87 u_int32_t ci_imask[NIPL]; 88 u_int32_t ci_iunmask[NIPL]; 89 90 u_int ci_flags; 91 u_int32_t ci_ipis; 92 93 u_int32_t ci_feature_flags; 94 u_int32_t ci_feature_eflags; 95 u_int32_t ci_signature; 96 u_int32_t ci_family; 97 u_int32_t ci_model; 98 u_int64_t ci_tsc_freq; 99 100 struct cpu_functions *ci_func; 101 void (*cpu_setup)(struct cpu_info *); 102 void (*ci_info)(struct cpu_info *); 103 104 int ci_want_resched; 105 106 struct x86_cache_info ci_cinfo[CAI_COUNT]; 107 108 char *ci_gdt; 109 110 volatile int ci_ddb_paused; 111 #define CI_DDB_RUNNING 0 112 #define CI_DDB_SHOULDSTOP 1 113 #define CI_DDB_STOPPED 2 114 #define CI_DDB_ENTERDDB 3 115 #define CI_DDB_INDDB 4 116 117 volatile int ci_setperf_state; 118 #define CI_SETPERF_READY 0 119 #define CI_SETPERF_SHOULDSTOP 1 120 #define CI_SETPERF_INTRANSIT 2 121 #define CI_SETPERF_DONE 3 122 123 struct x86_64_tss ci_doubleflt_tss; 124 125 char *ci_doubleflt_stack; 126 127 struct ksensordev ci_sensordev; 128 struct ksensor ci_sensor; 129 }; 130 131 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 132 #define CPUF_AP 0x0002 /* CPU is an AP */ 133 #define CPUF_SP 0x0004 /* CPU is only processor */ 134 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 135 136 #define CPUF_PRESENT 0x1000 /* CPU is present */ 137 #define CPUF_RUNNING 0x2000 /* CPU is running */ 138 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 139 #define CPUF_GO 0x8000 /* CPU should start running */ 140 141 #define PROC_PC(p) ((p)->p_md.md_regs->tf_rip) 142 143 extern struct cpu_info cpu_info_primary; 144 extern struct cpu_info *cpu_info_list; 145 146 #define CPU_INFO_ITERATOR int 147 #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \ 148 ci != NULL; ci = ci->ci_next) 149 150 #define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0) 151 152 /* 153 * Preempt the current process if in interrupt from user mode, 154 * or after the current trap/syscall if in system mode. 155 */ 156 extern void need_resched(struct cpu_info *); 157 #define clear_resched(ci) (ci)->ci_want_resched = 0 158 159 #if defined(MULTIPROCESSOR) 160 161 #define MAXCPUS 32 /* bitmask; can be bumped to 64 */ 162 163 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 164 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 165 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 166 167 #define curcpu() ({struct cpu_info *__ci; \ 168 asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 169 __ci;}) 170 #define cpu_number() (curcpu()->ci_cpuid) 171 172 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 173 174 extern struct cpu_info *cpu_info[MAXCPUS]; 175 176 void cpu_boot_secondary_processors(void); 177 void cpu_init_idle_pcbs(void); 178 179 void cpu_unidle(struct cpu_info *); 180 181 #else /* !MULTIPROCESSOR */ 182 183 #define MAXCPUS 1 184 185 #ifdef _KERNEL 186 extern struct cpu_info cpu_info_primary; 187 188 #define curcpu() (&cpu_info_primary) 189 190 #define cpu_unidle(ci) 191 192 #endif 193 194 /* 195 * definitions of cpu-dependent requirements 196 * referenced in generic code 197 */ 198 #define cpu_number() 0 199 #define CPU_IS_PRIMARY(ci) 1 200 201 #endif /* MULTIPROCESSOR */ 202 203 #endif /* _KERNEL */ 204 205 #include <machine/psl.h> 206 207 #ifdef MULTIPROCESSOR 208 #include <sys/mplock.h> 209 #endif 210 211 #define aston(p) ((p)->p_md.md_astpending = 1) 212 213 extern u_int32_t cpus_attached; 214 215 #define curpcb curcpu()->ci_curpcb 216 217 /* 218 * Arguments to hardclock, softclock and statclock 219 * encapsulate the previous machine state in an opaque 220 * clockframe; for now, use generic intrframe. 221 */ 222 #define clockframe intrframe 223 224 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_rflags) 225 #define CLKF_PC(frame) ((frame)->if_rip) 226 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 227 228 /* 229 * This is used during profiling to integrate system time. 230 */ 231 #define PROC_PC(p) ((p)->p_md.md_regs->tf_rip) 232 233 /* 234 * Give a profiling tick to the current process when the user profiling 235 * buffer pages are invalid. On the i386, request an ast to send us 236 * through trap(), marking the proc as needing a profiling tick. 237 */ 238 #define need_proftick(p) aston(p) 239 240 void signotify(struct proc *); 241 242 /* 243 * We need a machine-independent name for this. 244 */ 245 extern void (*delay_func)(int); 246 struct timeval; 247 248 #define DELAY(x) (*delay_func)(x) 249 #define delay(x) (*delay_func)(x) 250 251 252 #ifdef _KERNEL 253 extern int biosbasemem; 254 extern int biosextmem; 255 extern int cpu; 256 extern int cpu_feature; 257 extern int cpu_ecxfeature; 258 extern int cpu_id; 259 extern char cpu_vendor[]; 260 extern int cpuid_level; 261 extern int cpuspeed; 262 263 /* identcpu.c */ 264 void identifycpu(struct cpu_info *); 265 int cpu_amd64speed(int *); 266 void cpu_probe_features(struct cpu_info *); 267 268 /* machdep.c */ 269 void dumpconf(void); 270 int cpu_maxproc(void); 271 void cpu_reset(void); 272 void x86_64_proc0_tss_ldt_init(void); 273 void x86_64_bufinit(void); 274 void x86_64_init_pcb_tss_ldt(struct cpu_info *); 275 void cpu_proc_fork(struct proc *, struct proc *); 276 int amd64_pa_used(paddr_t); 277 extern void (*cpu_idle_enter_fcn)(void); 278 extern void (*cpu_idle_cycle_fcn)(void); 279 extern void (*cpu_idle_leave_fcn)(void); 280 281 struct region_descriptor; 282 void lgdt(struct region_descriptor *); 283 284 struct pcb; 285 void savectx(struct pcb *); 286 void switch_exit(struct proc *, void (*)(struct proc *)); 287 void proc_trampoline(void); 288 void child_trampoline(void); 289 290 /* clock.c */ 291 void initrtclock(void); 292 void startrtclock(void); 293 void i8254_delay(int); 294 void i8254_initclocks(void); 295 void i8254_inittimecounter(void); 296 void i8254_inittimecounter_simple(void); 297 298 299 void cpu_init_msrs(struct cpu_info *); 300 301 302 /* trap.c */ 303 void child_return(void *); 304 305 /* dkcsum.c */ 306 void dkcsumattach(void); 307 308 /* consinit.c */ 309 void kgdb_port_init(void); 310 311 /* bus_machdep.c */ 312 void x86_bus_space_init(void); 313 void x86_bus_space_mallocok(void); 314 315 /* powernow-k8.c */ 316 void k8_powernow_init(struct cpu_info *); 317 void k8_powernow_setperf(int); 318 319 void est_init(struct cpu_info *); 320 void est_setperf(int); 321 322 #ifdef MULTIPROCESSOR 323 /* mp_setperf.c */ 324 void mp_setperf_init(void); 325 #endif 326 327 #endif /* _KERNEL */ 328 329 /* 330 * CTL_MACHDEP definitions. 331 */ 332 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 333 #define CPU_BIOS 2 /* BIOS variables */ 334 #define CPU_BLK2CHR 3 /* convert blk maj into chr one */ 335 #define CPU_CHR2BLK 4 /* convert chr maj into blk one */ 336 #define CPU_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */ 337 #define CPU_CPUVENDOR 6 /* cpuid vendor string */ 338 #define CPU_CPUID 7 /* cpuid */ 339 #define CPU_CPUFEATURE 8 /* cpuid features */ 340 #define CPU_APMWARN 9 /* APM battery warning percentage */ 341 #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ 342 #define CPU_APMHALT 11 /* halt -p hack */ 343 #define CPU_XCRYPT 12 /* supports VIA xcrypt in userland */ 344 #define CPU_MAXID 13 /* number of valid machdep ids */ 345 346 #define CTL_MACHDEP_NAMES { \ 347 { 0, 0 }, \ 348 { "console_device", CTLTYPE_STRUCT }, \ 349 { "bios", CTLTYPE_INT }, \ 350 { "blk2chr", CTLTYPE_STRUCT }, \ 351 { "chr2blk", CTLTYPE_STRUCT }, \ 352 { "allowaperture", CTLTYPE_INT }, \ 353 { "cpuvendor", CTLTYPE_STRING }, \ 354 { "cpuid", CTLTYPE_INT }, \ 355 { "cpufeature", CTLTYPE_INT }, \ 356 { "apmwarn", CTLTYPE_INT }, \ 357 { "kbdreset", CTLTYPE_INT }, \ 358 { "apmhalt", CTLTYPE_INT }, \ 359 { "xcrypt", CTLTYPE_INT }, \ 360 } 361 362 /* 363 * Default cr4 flags. 364 * Doesn't really belong here, but doesn't really belong anywhere else 365 * either. Just to avoid painful mismatches of cr4 flags since they are 366 * set in three different places. 367 */ 368 #define CR4_DEFAULT (CR4_PAE|CR4_PGE|CR4_PSE|CR4_OSFXSR|CR4_OSXMMEXCPT) 369 370 #endif /* !_AMD64_CPU_H_ */ 371