1 /* $OpenBSD: cpu.h,v 1.176 2022/07/12 05:45:49 jsg 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. 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 _MACHINE_CPU_H_ 39 #define _MACHINE_CPU_H_ 40 41 /* 42 * Definitions unique to i386 cpu support. 43 */ 44 #ifdef _KERNEL 45 #include <machine/frame.h> 46 #include <machine/psl.h> 47 #include <machine/segments.h> 48 #include <machine/intrdefs.h> 49 #include <machine/tss.h> 50 51 #ifdef MULTIPROCESSOR 52 #include <machine/i82489reg.h> 53 #include <machine/i82489var.h> 54 #endif 55 56 #endif /* _KERNEL */ 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 #include <sys/device.h> 68 #include <sys/sched.h> 69 #include <sys/sensors.h> 70 #include <sys/srp.h> 71 72 struct intrsource; 73 74 #ifdef _KERNEL 75 /* XXX stuff to move to cpuvar.h later */ 76 struct cpu_info { 77 u_int32_t ci_kern_cr3; /* U+K page table */ 78 u_int32_t ci_scratch; /* for U<-->K transition */ 79 80 #define ci_PAGEALIGN ci_dev 81 struct device *ci_dev; /* our device */ 82 struct cpu_info *ci_self; /* pointer to this structure */ 83 struct schedstate_percpu ci_schedstate; /* scheduler state */ 84 struct cpu_info *ci_next; /* next cpu */ 85 86 /* 87 * Public members. 88 */ 89 struct proc *ci_curproc; /* current owner of the processor */ 90 cpuid_t ci_cpuid; /* our CPU ID */ 91 u_int ci_apicid; /* our APIC ID */ 92 u_int ci_acpi_proc_id; 93 u_int32_t ci_randseed; 94 95 u_int32_t ci_kern_esp; /* kernel-only stack */ 96 u_int32_t ci_intr_esp; /* U<-->K trampoline stack */ 97 u_int32_t ci_user_cr3; /* U-K page table */ 98 99 #if defined(MULTIPROCESSOR) 100 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 101 #endif 102 103 /* 104 * Private members. 105 */ 106 struct proc *ci_fpcurproc; /* current owner of the FPU */ 107 struct proc *ci_fpsaveproc; 108 int ci_fpsaving; /* save in progress */ 109 110 struct pcb *ci_curpcb; /* VA of current HW PCB */ 111 struct pcb *ci_idle_pcb; /* VA of current PCB */ 112 struct pmap *ci_curpmap; 113 114 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 115 u_int32_t ci_ipending; 116 int ci_ilevel; 117 int ci_idepth; 118 u_int32_t ci_imask[NIPL]; 119 u_int32_t ci_iunmask[NIPL]; 120 #ifdef DIAGNOSTIC 121 int ci_mutex_level; 122 #endif 123 124 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ 125 volatile u_long ci_flags; /* flags; see below */ 126 u_int32_t ci_ipis; /* interprocessor interrupts pending */ 127 128 u_int32_t ci_level; 129 u_int32_t ci_vendor[4]; 130 u_int32_t ci_signature; /* X86 cpuid type */ 131 u_int32_t ci_family; /* extended cpuid family */ 132 u_int32_t ci_model; /* extended cpuid model */ 133 u_int32_t ci_feature_flags; /* X86 CPUID feature bits */ 134 u_int32_t ci_feature_sefflags_ebx;/* more CPUID feature bits */ 135 u_int32_t ci_feature_sefflags_ecx;/* more CPUID feature bits */ 136 u_int32_t ci_feature_sefflags_edx;/* more CPUID feature bits */ 137 u_int32_t ci_feature_tpmflags; /* thermal & power bits */ 138 u_int32_t cpu_class; /* CPU class */ 139 u_int32_t ci_cflushsz; /* clflush cache-line size */ 140 141 int ci_inatomic; 142 143 struct cpu_functions *ci_func; /* start/stop functions */ 144 void (*cpu_setup)(struct cpu_info *); /* proc-dependant init */ 145 146 struct device *ci_acpicpudev; 147 volatile u_int ci_mwait; 148 #define MWAIT_IN_IDLE 0x1 /* don't need IPI to wake */ 149 #define MWAIT_KEEP_IDLING 0x2 /* cleared by other cpus to wake me */ 150 #define MWAIT_ONLY 0x4 /* set if all idle states use mwait */ 151 #define MWAIT_IDLING (MWAIT_IN_IDLE | MWAIT_KEEP_IDLING) 152 153 int ci_want_resched; 154 155 union descriptor *ci_gdt; 156 struct i386tss *ci_tss; 157 struct i386tss *ci_nmi_tss; 158 159 volatile int ci_ddb_paused; /* paused due to other proc in ddb */ 160 #define CI_DDB_RUNNING 0 161 #define CI_DDB_SHOULDSTOP 1 162 #define CI_DDB_STOPPED 2 163 #define CI_DDB_ENTERDDB 3 164 #define CI_DDB_INDDB 4 165 166 struct ksensordev ci_sensordev; 167 struct ksensor ci_sensor; 168 #if defined(GPROF) || defined(DDBPROF) 169 struct gmonparam *ci_gmon; 170 #endif 171 char ci_panicbuf[512]; 172 }; 173 174 /* 175 * Processor flag notes: The "primary" CPU has certain MI-defined 176 * roles (mostly relating to hardclock handling); we distinguish 177 * between the processor which booted us, and the processor currently 178 * holding the "primary" role just to give us the flexibility later to 179 * change primaries should we be sufficiently twisted. 180 */ 181 182 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 183 #define CPUF_AP 0x0002 /* CPU is an AP */ 184 #define CPUF_SP 0x0004 /* CPU is only processor */ 185 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 186 #define CPUF_APIC_CD 0x0010 /* CPU has apic configured */ 187 #define CPUF_CONST_TSC 0x0020 /* CPU has constant TSC */ 188 189 #define CPUF_PRESENT 0x1000 /* CPU is present */ 190 #define CPUF_RUNNING 0x2000 /* CPU is running */ 191 #define CPUF_VMM 0x4000 /* CPU is executing in VMM mode */ 192 193 /* 194 * We statically allocate the CPU info for the primary CPU (or, 195 * the only CPU on uniprocessors), and the primary CPU is the 196 * first CPU on the CPU info list. 197 */ 198 struct cpu_info_full; 199 extern struct cpu_info_full cpu_info_full_primary; 200 #define cpu_info_primary (*(struct cpu_info *)((char *)&cpu_info_full_primary + PAGE_SIZE*2 - offsetof(struct cpu_info, ci_PAGEALIGN))) 201 202 extern struct cpu_info *cpu_info_list; 203 204 #define CPU_INFO_ITERATOR int 205 #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \ 206 ci != NULL; ci = ci->ci_next) 207 208 #define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0) 209 210 #ifdef MULTIPROCESSOR 211 212 #define MAXCPUS 32 /* because we use a bitmask */ 213 214 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 215 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 216 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 217 218 static struct cpu_info *curcpu(void); 219 220 __inline static struct cpu_info * 221 curcpu(void) 222 { 223 struct cpu_info *ci; 224 225 /* Can't include sys/param.h for offsetof() since it includes us */ 226 __asm volatile("movl %%fs:%1, %0" : 227 "=r" (ci) : "m" 228 (*(struct cpu_info * const *)&((struct cpu_info *)0)->ci_self)); 229 return ci; 230 } 231 #define cpu_number() (curcpu()->ci_cpuid) 232 233 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 234 #define CPU_IS_RUNNING(ci) ((ci)->ci_flags & CPUF_RUNNING) 235 236 extern struct cpu_info *cpu_info[MAXCPUS]; 237 238 extern void cpu_boot_secondary_processors(void); 239 extern void cpu_init_idle_pcbs(void); 240 241 void cpu_kick(struct cpu_info *); 242 void cpu_unidle(struct cpu_info *); 243 244 #define CPU_BUSY_CYCLE() __asm volatile("pause": : : "memory") 245 246 #else /* MULTIPROCESSOR */ 247 248 #define MAXCPUS 1 249 250 #define cpu_number() 0 251 #define curcpu() (&cpu_info_primary) 252 253 #define CPU_IS_PRIMARY(ci) 1 254 #define CPU_IS_RUNNING(ci) 1 255 256 #define cpu_kick(ci) 257 #define cpu_unidle(ci) 258 259 #define CPU_BUSY_CYCLE() do {} while (0) 260 261 #endif 262 263 #include <machine/cpufunc.h> 264 265 #define aston(p) ((p)->p_md.md_astpending = 1) 266 267 #define curpcb curcpu()->ci_curpcb 268 269 unsigned int cpu_rnd_messybits(void); 270 271 /* 272 * Preempt the current process if in interrupt from user mode, 273 * or after the current trap/syscall if in system mode. 274 */ 275 extern void need_resched(struct cpu_info *); 276 #define clear_resched(ci) (ci)->ci_want_resched = 0 277 278 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 279 #define CLKF_PC(frame) ((frame)->if_eip) 280 #define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL) 281 282 /* 283 * This is used during profiling to integrate system time. 284 */ 285 #define PROC_PC(p) ((p)->p_md.md_regs->tf_eip) 286 #define PROC_STACK(p) ((p)->p_md.md_regs->tf_esp) 287 288 /* 289 * Give a profiling tick to the current process when the user profiling 290 * buffer pages are invalid. On the i386, request an ast to send us 291 * through trap(), marking the proc as needing a profiling tick. 292 */ 293 #define need_proftick(p) aston(p) 294 295 /* 296 * Notify the current process (p) that it has a signal pending, 297 * process as soon as possible. 298 */ 299 void signotify(struct proc *); 300 301 /* 302 * We need a machine-independent name for this. 303 */ 304 extern void (*delay_func)(int); 305 struct timeval; 306 307 #define DELAY(x) (*delay_func)(x) 308 #define delay(x) (*delay_func)(x) 309 310 /* 311 * High resolution clock support (Pentium only) 312 */ 313 void calibrate_cyclecounter(void); 314 315 /* 316 * pull in #defines for kinds of processors 317 */ 318 #include <machine/cputypes.h> 319 320 struct cpu_nocpuid_nameclass { 321 int cpu_vendor; 322 const char *cpu_vendorname; 323 const char *cpu_name; 324 int cpu_class; 325 void (*cpu_setup)(struct cpu_info *); 326 }; 327 328 struct cpu_cpuid_nameclass { 329 const char *cpu_id; 330 int cpu_vendor; 331 const char *cpu_vendorname; 332 struct cpu_cpuid_family { 333 int cpu_class; 334 const char *cpu_models[CPU_MAXMODEL+2]; 335 void (*cpu_setup)(struct cpu_info *); 336 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 337 }; 338 339 struct cpu_cpuid_feature { 340 int feature_bit; 341 const char *feature_name; 342 }; 343 344 /* locore.s */ 345 extern int cpu; 346 extern int cpu_id; 347 extern char cpu_vendor[]; /* note: NOT nul-terminated */ 348 extern char cpu_brandstr[]; 349 extern int cpuid_level; 350 extern int cpu_miscinfo; 351 extern int cpu_feature; 352 extern int ecpu_feature; 353 extern int cpu_ecxfeature; 354 extern int ecpu_ecxfeature; 355 extern int cpu_cache_eax; 356 extern int cpu_cache_ebx; 357 extern int cpu_cache_ecx; 358 extern int cpu_cache_edx; 359 extern int cpu_perf_eax; 360 extern int cpu_perf_ebx; 361 extern int cpu_perf_edx; 362 extern int cpu_apmi_edx; 363 extern int cpu_pae; /* cpu has both PAE and NX features */ 364 365 /* cpu.c */ 366 extern u_int cpu_mwait_size; 367 extern u_int cpu_mwait_states; 368 extern void cpu_update_nmi_cr3(vaddr_t); 369 extern void cpu_tsx_disable(struct cpu_info *); 370 371 /* machdep.c */ 372 extern int cpu_apmhalt; 373 extern int cpu_class; 374 extern char cpu_model[]; 375 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 376 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 377 extern void (*cpu_idle_enter_fcn)(void); 378 extern void (*cpu_idle_cycle_fcn)(void); 379 extern void (*cpu_idle_leave_fcn)(void); 380 381 extern int cpuspeed; 382 383 #if !defined(SMALL_KERNEL) 384 #define BUS66 6667 385 #define BUS100 10000 386 #define BUS133 13333 387 #define BUS166 16667 388 #define BUS200 20000 389 #define BUS266 26667 390 #define BUS333 33333 391 extern int bus_clock; 392 #endif 393 394 /* F00F bug fix stuff for pentium cpu */ 395 extern int cpu_f00f_bug; 396 void fix_f00f(void); 397 398 /* dkcsum.c */ 399 void dkcsumattach(void); 400 401 extern int i386_use_fxsave; 402 extern int i386_has_sse; 403 extern int i386_has_sse2; 404 405 extern void (*update_cpuspeed)(void); 406 407 /* machdep.c */ 408 void dumpconf(void); 409 void cpu_reset(void); 410 void i386_proc0_tss_init(void); 411 void i386_init_pcb_tss(struct cpu_info *); 412 void cpuid(u_int32_t, u_int32_t *); 413 414 /* locore.s */ 415 struct region_descriptor; 416 void lgdt(struct region_descriptor *); 417 418 struct pcb; 419 void savectx(struct pcb *); 420 void switch_exit(struct proc *); 421 void proc_trampoline(void); 422 423 /* clock.c */ 424 extern void (*initclock_func)(void); 425 void startclocks(void); 426 void rtcinit(void); 427 void rtcstart(void); 428 void rtcstop(void); 429 void i8254_delay(int); 430 void i8254_initclocks(void); 431 void i8254_startclock(void); 432 void i8254_inittimecounter(void); 433 void i8254_inittimecounter_simple(void); 434 435 #if !defined(SMALL_KERNEL) 436 /* est.c */ 437 void est_init(struct cpu_info *, int); 438 void est_setperf(int); 439 /* longrun.c */ 440 void longrun_init(void); 441 void longrun_setperf(int); 442 /* p4tcc.c */ 443 void p4tcc_init(int, int); 444 void p4tcc_setperf(int); 445 /* powernow.c */ 446 void k6_powernow_init(void); 447 void k6_powernow_setperf(int); 448 /* powernow-k7.c */ 449 void k7_powernow_init(void); 450 void k7_powernow_setperf(int); 451 /* powernow-k8.c */ 452 void k8_powernow_init(void); 453 void k8_powernow_setperf(int); 454 /* k1x-pstate.c */ 455 void k1x_init(struct cpu_info *); 456 void k1x_setperf(int); 457 #endif 458 459 /* npx.c */ 460 void npxdrop(struct proc *); 461 void npxsave_proc(struct proc *, int); 462 void npxsave_cpu(struct cpu_info *, int); 463 464 /* isa_machdep.c */ 465 void isa_defaultirq(void); 466 int isa_nmi(void); 467 468 /* pmap.c */ 469 void pmap_bootstrap(vaddr_t); 470 471 /* vm_machdep.c */ 472 int kvtop(caddr_t); 473 474 #ifdef MULTIPROCESSOR 475 /* mp_setperf.c */ 476 void mp_setperf_init(void); 477 #endif 478 479 int cpu_paenable(void *); 480 #endif /* _KERNEL */ 481 482 /* 483 * CTL_MACHDEP definitions. 484 */ 485 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 486 #define CPU_BIOS 2 /* BIOS variables */ 487 #define CPU_BLK2CHR 3 /* convert blk maj into chr one */ 488 #define CPU_CHR2BLK 4 /* convert chr maj into blk one */ 489 #define CPU_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */ 490 #define CPU_CPUVENDOR 6 /* cpuid vendor string */ 491 #define CPU_CPUID 7 /* cpuid */ 492 #define CPU_CPUFEATURE 8 /* cpuid features */ 493 #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ 494 #define CPU_OSFXSR 13 /* uses FXSAVE/FXRSTOR */ 495 #define CPU_SSE 14 /* supports SSE */ 496 #define CPU_SSE2 15 /* supports SSE2 */ 497 #define CPU_XCRYPT 16 /* supports VIA xcrypt in userland */ 498 #define CPU_LIDACTION 18 /* action caused by lid close */ 499 #define CPU_FORCEUKBD 19 /* Force ukbd(4) as console keyboard */ 500 #define CPU_MAXID 20 /* number of valid machdep ids */ 501 502 #define CTL_MACHDEP_NAMES { \ 503 { 0, 0 }, \ 504 { "console_device", CTLTYPE_STRUCT }, \ 505 { "bios", CTLTYPE_INT }, \ 506 { "blk2chr", CTLTYPE_STRUCT }, \ 507 { "chr2blk", CTLTYPE_STRUCT }, \ 508 { "allowaperture", CTLTYPE_INT }, \ 509 { "cpuvendor", CTLTYPE_STRING }, \ 510 { "cpuid", CTLTYPE_INT }, \ 511 { "cpufeature", CTLTYPE_INT }, \ 512 { 0, 0 }, \ 513 { "kbdreset", CTLTYPE_INT }, \ 514 { 0, 0 }, \ 515 { 0, 0 }, \ 516 { "osfxsr", CTLTYPE_INT }, \ 517 { "sse", CTLTYPE_INT }, \ 518 { "sse2", CTLTYPE_INT }, \ 519 { "xcrypt", CTLTYPE_INT }, \ 520 { 0, 0 }, \ 521 { "lidaction", CTLTYPE_INT }, \ 522 { "forceukbd", CTLTYPE_INT }, \ 523 } 524 525 /* 526 * This needs to be included late since it relies on definitions higher 527 * up in this file. 528 */ 529 #if defined(MULTIPROCESSOR) && defined(_KERNEL) 530 #include <sys/mplock.h> 531 #endif 532 533 #endif /* !_MACHINE_CPU_H_ */ 534