1 /* $OpenBSD: cpu.h,v 1.109 2009/12/09 14:27:34 oga 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 _I386_CPU_H_ 39 #define _I386_CPU_H_ 40 41 /* 42 * Definitions unique to i386 cpu support. 43 */ 44 #include <machine/frame.h> 45 #include <machine/psl.h> 46 #include <machine/segments.h> 47 #include <machine/intrdefs.h> 48 49 #ifdef MULTIPROCESSOR 50 #include <machine/i82489reg.h> 51 #include <machine/i82489var.h> 52 #endif 53 54 /* 55 * Arguments to hardclock, softclock and statclock 56 * encapsulate the previous machine state in an opaque 57 * clockframe; for now, use generic intrframe. 58 * 59 * XXX intrframe has a lot of gunk we don't need. 60 */ 61 #define clockframe intrframe 62 63 #include <sys/device.h> 64 #include <sys/lock.h> /* will also get LOCKDEBUG */ 65 #include <sys/sched.h> 66 #include <sys/sensors.h> 67 68 struct intrsource; 69 70 #ifdef _KERNEL 71 /* XXX stuff to move to cpuvar.h later */ 72 struct cpu_info { 73 struct device ci_dev; /* our device */ 74 struct cpu_info *ci_self; /* pointer to this structure */ 75 struct schedstate_percpu ci_schedstate; /* scheduler state */ 76 struct cpu_info *ci_next; /* next cpu */ 77 78 /* 79 * Public members. 80 */ 81 struct proc *ci_curproc; /* current owner of the processor */ 82 struct simplelock ci_slock; /* lock on this data structure */ 83 cpuid_t ci_cpuid; /* our CPU ID */ 84 u_int ci_apicid; /* our APIC ID */ 85 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 86 u_long ci_spin_locks; /* # of spin locks held */ 87 u_long ci_simple_locks; /* # of simple locks held */ 88 #endif 89 u_int32_t ci_randseed; 90 91 /* 92 * Private members. 93 */ 94 struct proc *ci_fpcurproc; /* current owner of the FPU */ 95 int ci_fpsaving; /* save in progress */ 96 97 struct pcb *ci_curpcb; /* VA of current HW PCB */ 98 struct pcb *ci_idle_pcb; /* VA of current PCB */ 99 int ci_idle_tss_sel; /* TSS selector of idle PCB */ 100 struct pmap *ci_curpmap; 101 102 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 103 u_int32_t ci_ipending; 104 int ci_ilevel; 105 int ci_idepth; 106 u_int32_t ci_imask[NIPL]; 107 u_int32_t ci_iunmask[NIPL]; 108 109 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ 110 u_long ci_flags; /* flags; see below */ 111 u_int32_t ci_ipis; /* interprocessor interrupts pending */ 112 int sc_apic_version;/* local APIC version */ 113 114 u_int32_t ci_level; 115 u_int32_t ci_vendor[4]; 116 u_int32_t ci_signature; /* X86 cpuid type */ 117 u_int32_t ci_family; /* extended cpuid family */ 118 u_int32_t ci_model; /* extended cpuid model */ 119 u_int32_t ci_feature_flags; /* X86 CPUID feature bits */ 120 u_int32_t cpu_class; /* CPU class */ 121 u_int32_t ci_cflushsz; /* clflush cache-line size */ 122 123 struct cpu_functions *ci_func; /* start/stop functions */ 124 void (*cpu_setup)(struct cpu_info *); /* proc-dependant init */ 125 126 int ci_want_resched; 127 128 union descriptor *ci_gdt; 129 union descriptor *ci_ldt; /* per-cpu default LDT */ 130 int ci_ldt_len; /* in bytes */ 131 132 volatile int ci_ddb_paused; /* paused due to other proc in ddb */ 133 #define CI_DDB_RUNNING 0 134 #define CI_DDB_SHOULDSTOP 1 135 #define CI_DDB_STOPPED 2 136 #define CI_DDB_ENTERDDB 3 137 #define CI_DDB_INDDB 4 138 139 volatile int ci_setperf_state; 140 #define CI_SETPERF_READY 0 141 #define CI_SETPERF_SHOULDSTOP 1 142 #define CI_SETPERF_INTRANSIT 2 143 #define CI_SETPERF_DONE 3 144 145 struct ksensordev ci_sensordev; 146 struct ksensor ci_sensor; 147 }; 148 149 /* 150 * Processor flag notes: The "primary" CPU has certain MI-defined 151 * roles (mostly relating to hardclock handling); we distinguish 152 * betwen the processor which booted us, and the processor currently 153 * holding the "primary" role just to give us the flexibility later to 154 * change primaries should we be sufficiently twisted. 155 */ 156 157 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 158 #define CPUF_AP 0x0002 /* CPU is an AP */ 159 #define CPUF_SP 0x0004 /* CPU is only processor */ 160 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 161 #define CPUF_APIC_CD 0x0010 /* CPU has apic configured */ 162 163 #define CPUF_PRESENT 0x1000 /* CPU is present */ 164 #define CPUF_RUNNING 0x2000 /* CPU is running */ 165 166 /* 167 * We statically allocate the CPU info for the primary CPU (or, 168 * the only CPU on uniprocessors), and the primary CPU is the 169 * first CPU on the CPU info list. 170 */ 171 extern struct cpu_info cpu_info_primary; 172 extern struct cpu_info *cpu_info_list; 173 174 #define CPU_INFO_ITERATOR int 175 #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \ 176 ci != NULL; ci = ci->ci_next) 177 178 #define CPU_INFO_UNIT(ci) ((ci)->ci_dev.dv_unit) 179 180 #ifdef MULTIPROCESSOR 181 182 #define MAXCPUS 32 /* because we use a bitmask */ 183 184 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 185 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 186 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 187 188 static struct cpu_info *curcpu(void); 189 190 __inline static struct cpu_info * 191 curcpu(void) 192 { 193 struct cpu_info *ci; 194 195 /* Can't include sys/param.h for offsetof() since it includes us */ 196 __asm __volatile("movl %%fs:%1, %0" : 197 "=r" (ci) : "m" 198 (*(struct cpu_info * const *)&((struct cpu_info *)0)->ci_self)); 199 return ci; 200 } 201 #define cpu_number() (curcpu()->ci_cpuid) 202 203 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 204 205 extern struct cpu_info *cpu_info[MAXCPUS]; 206 207 extern void cpu_boot_secondary_processors(void); 208 extern void cpu_init_idle_pcbs(void); 209 210 void cpu_unidle(struct cpu_info *); 211 212 #else /* MULTIPROCESSOR */ 213 214 #define MAXCPUS 1 215 216 #define cpu_number() 0 217 #define curcpu() (&cpu_info_primary) 218 219 #define CPU_IS_PRIMARY(ci) 1 220 221 #define cpu_unidle(ci) 222 223 #endif 224 225 #define aston(p) ((p)->p_md.md_astpending = 1) 226 227 #define curpcb curcpu()->ci_curpcb 228 229 #define want_resched (curcpu()->ci_want_resched) 230 231 /* 232 * Preempt the current process if in interrupt from user mode, 233 * or after the current trap/syscall if in system mode. 234 */ 235 extern void need_resched(struct cpu_info *); 236 #define clear_resched(ci) (ci)->ci_want_resched = 0 237 238 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 239 #define CLKF_PC(frame) ((frame)->if_eip) 240 #define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL) 241 242 /* 243 * This is used during profiling to integrate system time. 244 */ 245 #define PROC_PC(p) ((p)->p_md.md_regs->tf_eip) 246 247 /* 248 * Give a profiling tick to the current process when the user profiling 249 * buffer pages are invalid. On the i386, request an ast to send us 250 * through trap(), marking the proc as needing a profiling tick. 251 */ 252 #define need_proftick(p) aston(p) 253 254 /* 255 * Notify the current process (p) that it has a signal pending, 256 * process as soon as possible. 257 */ 258 void signotify(struct proc *); 259 260 /* 261 * We need a machine-independent name for this. 262 */ 263 extern void (*delay_func)(int); 264 struct timeval; 265 266 #define DELAY(x) (*delay_func)(x) 267 #define delay(x) (*delay_func)(x) 268 269 /* 270 * High resolution clock support (Pentium only) 271 */ 272 void calibrate_cyclecounter(void); 273 274 /* 275 * pull in #defines for kinds of processors 276 */ 277 #include <machine/cputypes.h> 278 279 struct cpu_nocpuid_nameclass { 280 int cpu_vendor; 281 const char *cpu_vendorname; 282 const char *cpu_name; 283 int cpu_class; 284 void (*cpu_setup)(struct cpu_info *); 285 }; 286 287 struct cpu_cpuid_nameclass { 288 const char *cpu_id; 289 int cpu_vendor; 290 const char *cpu_vendorname; 291 struct cpu_cpuid_family { 292 int cpu_class; 293 const char *cpu_models[CPU_MAXMODEL+2]; 294 void (*cpu_setup)(struct cpu_info *); 295 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 296 }; 297 298 struct cpu_cpuid_feature { 299 int feature_bit; 300 const char *feature_name; 301 }; 302 303 /* locore.s */ 304 extern int cpu; 305 extern int cpu_id; 306 extern char cpu_vendor[]; /* note: NOT nul-terminated */ 307 extern char cpu_brandstr[]; 308 extern int cpuid_level; 309 extern int cpu_miscinfo; 310 extern int cpu_feature; 311 extern int cpu_ecxfeature; 312 extern int cpu_cache_eax; 313 extern int cpu_cache_ebx; 314 extern int cpu_cache_ecx; 315 extern int cpu_cache_edx; 316 317 /* machdep.c */ 318 extern int cpu_apmhalt; 319 extern int cpu_class; 320 extern char cpu_model[]; 321 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 322 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 323 extern void (*cpu_idle_enter_fcn)(void); 324 extern void (*cpu_idle_cycle_fcn)(void); 325 extern void (*cpu_idle_leave_fcn)(void); 326 327 /* apm.c */ 328 extern int cpu_apmwarn; 329 330 extern int cpuspeed; 331 332 #if !defined(SMALL_KERNEL) 333 #define BUS66 6667 334 #define BUS100 10000 335 #define BUS133 13333 336 #define BUS166 16667 337 #define BUS200 20000 338 #define BUS266 26667 339 #define BUS333 33333 340 extern int bus_clock; 341 #endif 342 343 /* F00F bug fix stuff for pentium cpu */ 344 extern int cpu_f00f_bug; 345 void fix_f00f(void); 346 347 /* dkcsum.c */ 348 void dkcsumattach(void); 349 350 extern int i386_use_fxsave; 351 extern int i386_has_sse; 352 extern int i386_has_sse2; 353 354 extern void (*update_cpuspeed)(void); 355 356 /* machdep.c */ 357 void dumpconf(void); 358 void cpu_reset(void); 359 void i386_proc0_tss_ldt_init(void); 360 void i386_init_pcb_tss_ldt(struct cpu_info *); 361 void cpuid(u_int32_t, u_int32_t *); 362 363 /* locore.s */ 364 struct region_descriptor; 365 void lgdt(struct region_descriptor *); 366 367 struct pcb; 368 void savectx(struct pcb *); 369 void switch_exit(struct proc *); 370 void proc_trampoline(void); 371 372 /* clock.c */ 373 void initrtclock(void); 374 void startrtclock(void); 375 void rtcdrain(void *); 376 void i8254_delay(int); 377 void i8254_initclocks(void); 378 void i8254_inittimecounter(void); 379 void i8254_inittimecounter_simple(void); 380 381 382 #if !defined(SMALL_KERNEL) 383 /* est.c */ 384 void est_init(const char *, int); 385 void est_setperf(int); 386 /* longrun.c */ 387 void longrun_init(void); 388 void longrun_setperf(int); 389 /* p4tcc.c */ 390 void p4tcc_init(int, int); 391 void p4tcc_setperf(int); 392 /* powernow.c */ 393 void k6_powernow_init(void); 394 void k6_powernow_setperf(int); 395 /* powernow-k7.c */ 396 void k7_powernow_init(void); 397 void k7_powernow_setperf(int); 398 /* powernow-k8.c */ 399 void k8_powernow_init(void); 400 void k8_powernow_setperf(int); 401 #endif 402 403 /* npx.c */ 404 void npxdrop(struct proc *); 405 void npxsave_proc(struct proc *, int); 406 void npxsave_cpu(struct cpu_info *, int); 407 408 #ifdef USER_LDT 409 /* sys_machdep.h */ 410 extern int user_ldt_enable; 411 int i386_get_ldt(struct proc *, void *, register_t *); 412 int i386_set_ldt(struct proc *, void *, register_t *); 413 #endif 414 415 /* isa_machdep.c */ 416 void isa_defaultirq(void); 417 void isa_nodefaultirq(void); 418 int isa_nmi(void); 419 420 /* pmap.c */ 421 void pmap_bootstrap(vaddr_t); 422 423 /* vm_machdep.c */ 424 int kvtop(caddr_t); 425 426 #ifdef MULTIPROCESSOR 427 /* mp_setperf.c */ 428 void mp_setperf_init(void); 429 #endif 430 431 #ifdef VM86 432 /* vm86.c */ 433 void vm86_gpfault(struct proc *, int); 434 #endif /* VM86 */ 435 436 #ifdef GENERIC 437 /* swapgeneric.c */ 438 void setconf(void); 439 #endif /* GENERIC */ 440 441 #endif /* _KERNEL */ 442 443 /* 444 * CTL_MACHDEP definitions. 445 */ 446 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 447 #define CPU_BIOS 2 /* BIOS variables */ 448 #define CPU_BLK2CHR 3 /* convert blk maj into chr one */ 449 #define CPU_CHR2BLK 4 /* convert chr maj into blk one */ 450 #define CPU_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */ 451 #define CPU_CPUVENDOR 6 /* cpuid vendor string */ 452 #define CPU_CPUID 7 /* cpuid */ 453 #define CPU_CPUFEATURE 8 /* cpuid features */ 454 #define CPU_APMWARN 9 /* APM battery warning percentage */ 455 #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ 456 #define CPU_APMHALT 11 /* halt -p hack */ 457 #define CPU_USERLDT 12 458 #define CPU_OSFXSR 13 /* uses FXSAVE/FXRSTOR */ 459 #define CPU_SSE 14 /* supports SSE */ 460 #define CPU_SSE2 15 /* supports SSE2 */ 461 #define CPU_XCRYPT 16 /* supports VIA xcrypt in userland */ 462 #define CPU_MAXID 17 /* number of valid machdep ids */ 463 464 #define CTL_MACHDEP_NAMES { \ 465 { 0, 0 }, \ 466 { "console_device", CTLTYPE_STRUCT }, \ 467 { "bios", CTLTYPE_INT }, \ 468 { "blk2chr", CTLTYPE_STRUCT }, \ 469 { "chr2blk", CTLTYPE_STRUCT }, \ 470 { "allowaperture", CTLTYPE_INT }, \ 471 { "cpuvendor", CTLTYPE_STRING }, \ 472 { "cpuid", CTLTYPE_INT }, \ 473 { "cpufeature", CTLTYPE_INT }, \ 474 { "apmwarn", CTLTYPE_INT }, \ 475 { "kbdreset", CTLTYPE_INT }, \ 476 { "apmhalt", CTLTYPE_INT }, \ 477 { "userldt", CTLTYPE_INT }, \ 478 { "osfxsr", CTLTYPE_INT }, \ 479 { "sse", CTLTYPE_INT }, \ 480 { "sse2", CTLTYPE_INT }, \ 481 { "xcrypt", CTLTYPE_INT }, \ 482 } 483 484 /* 485 * This needs to be included late since it relies on definitions higher 486 * up in this file. 487 */ 488 #if defined(MULTIPROCESSOR) && defined(_KERNEL) 489 #include <sys/mplock.h> 490 #endif 491 492 #endif /* !_I386_CPU_H_ */ 493