cpu.h revision 1.105
1 /* $NetBSD: cpu.h,v 1.105 2003/10/09 13:46:43 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 35 */ 36 37 #ifndef _I386_CPU_H_ 38 #define _I386_CPU_H_ 39 40 #if defined(_KERNEL_OPT) 41 #include "opt_multiprocessor.h" 42 #endif 43 44 /* 45 * Definitions unique to i386 cpu support. 46 */ 47 #include <machine/frame.h> 48 #include <machine/segments.h> 49 #include <machine/tss.h> 50 #include <machine/intrdefs.h> 51 #include <x86/cacheinfo.h> 52 53 #include <sys/device.h> 54 #include <sys/lock.h> /* will also get LOCKDEBUG */ 55 #include <sys/sched.h> 56 57 #include <lib/libkern/libkern.h> /* offsetof */ 58 59 struct intrsource; 60 61 /* 62 * a bunch of this belongs in cpuvar.h; move it later.. 63 */ 64 65 struct cpu_info { 66 struct device *ci_dev; /* pointer to our device */ 67 struct cpu_info *ci_self; /* self-pointer */ 68 void *ci_tlog_base; /* Trap log base */ 69 int32_t ci_tlog_offset; /* Trap log current offset */ 70 struct schedstate_percpu ci_schedstate; /* scheduler state */ 71 struct cpu_info *ci_next; /* next cpu */ 72 73 /* 74 * Public members. 75 */ 76 struct lwp *ci_curlwp; /* current owner of the processor */ 77 struct simplelock ci_slock; /* lock on this data structure */ 78 cpuid_t ci_cpuid; /* our CPU ID */ 79 u_int ci_apicid; /* our APIC ID */ 80 u_long ci_spin_locks; /* # of spin locks held */ 81 u_long ci_simple_locks; /* # of simple locks held */ 82 83 /* 84 * Private members. 85 */ 86 struct lwp *ci_fpcurlwp; /* current owner of the FPU */ 87 int ci_fpsaving; /* save in progress */ 88 89 volatile u_int32_t ci_tlb_ipi_mask; 90 91 struct pcb *ci_curpcb; /* VA of current HW PCB */ 92 struct pcb *ci_idle_pcb; /* VA of current PCB */ 93 int ci_idle_tss_sel; /* TSS selector of idle PCB */ 94 95 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 96 u_int32_t ci_ipending; 97 int ci_ilevel; 98 int ci_idepth; 99 u_int32_t ci_imask[NIPL]; 100 u_int32_t ci_iunmask[NIPL]; 101 102 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ 103 u_int32_t ci_flags; /* flags; see below */ 104 u_int32_t ci_ipis; /* interprocessor interrupts pending */ 105 int sc_apic_version; /* local APIC version */ 106 107 int32_t ci_cpuid_level; 108 u_int32_t ci_signature; /* X86 cpuid type */ 109 u_int32_t ci_feature_flags;/* X86 CPUID feature bits */ 110 u_int32_t ci_cpu_class; /* CPU class */ 111 u_int32_t ci_brand_id; /* Intel brand id */ 112 u_int32_t ci_vendor[4]; /* vendor string */ 113 u_int32_t ci_cpu_serial[3]; /* PIII serial number */ 114 u_int64_t ci_tsc_freq; /* cpu cycles/second */ 115 116 struct cpu_functions *ci_func; /* start/stop functions */ 117 void (*cpu_setup) __P((struct cpu_info *)); 118 /* proc-dependant init */ 119 void (*ci_info) __P((struct cpu_info *)); 120 121 int ci_want_resched; 122 int ci_astpending; 123 struct trapframe *ci_ddb_regs; 124 125 u_int ci_cflush_lsize; /* CFLUSH insn line size */ 126 struct x86_cache_info ci_cinfo[CAI_COUNT]; 127 128 /* 129 * Variables used by cc_microtime(). 130 */ 131 struct timeval ci_cc_time; 132 int64_t ci_cc_cc; 133 int64_t ci_cc_ms_delta; 134 int64_t ci_cc_denom; 135 136 union descriptor *ci_gdt; 137 138 struct i386tss ci_doubleflt_tss; 139 struct i386tss ci_ddbipi_tss; 140 141 char *ci_doubleflt_stack; 142 char *ci_ddbipi_stack; 143 144 struct evcnt ci_ipi_events[X86_NIPI]; 145 }; 146 147 /* 148 * Processor flag notes: The "primary" CPU has certain MI-defined 149 * roles (mostly relating to hardclock handling); we distinguish 150 * betwen the processor which booted us, and the processor currently 151 * holding the "primary" role just to give us the flexibility later to 152 * change primaries should we be sufficiently twisted. 153 */ 154 155 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 156 #define CPUF_AP 0x0002 /* CPU is an AP */ 157 #define CPUF_SP 0x0004 /* CPU is only processor */ 158 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 159 160 #define CPUF_APIC_CD 0x0010 /* CPU has apic configured */ 161 162 #define CPUF_PRESENT 0x1000 /* CPU is present */ 163 #define CPUF_RUNNING 0x2000 /* CPU is running */ 164 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 165 #define CPUF_GO 0x8000 /* CPU should start running */ 166 167 /* 168 * We statically allocate the CPU info for the primary CPU (or, 169 * the only CPU on uniprocessors), and the primary CPU is the 170 * first CPU on the CPU info list. 171 */ 172 extern struct cpu_info cpu_info_primary; 173 extern struct cpu_info *cpu_info_list; 174 175 #define CPU_INFO_ITERATOR int 176 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 177 ci != NULL; ci = ci->ci_next 178 179 #if defined(MULTIPROCESSOR) 180 181 #define X86_MAXPROCS 32 /* because we use a bitmask */ 182 183 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 184 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 185 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 186 187 static struct cpu_info *curcpu(void); 188 189 __inline static struct cpu_info * __attribute__((__unused__)) 190 curcpu() 191 { 192 struct cpu_info *ci; 193 194 __asm __volatile("movl %%fs:%1, %0" : 195 "=r" (ci) : 196 "m" 197 (*(struct cpuinfo * const *)offsetof(struct cpu_info, ci_self))); 198 return ci; 199 } 200 201 #define cpu_number() (curcpu()->ci_cpuid) 202 203 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 204 205 #if 0 206 #define x86_ipisend(ci) (((ci) != curcpu()) ? x86_send_ipi((ci),0) : 0) 207 #else 208 #define x86_ipisend(ci) 0 209 #endif 210 211 #define aston(p) ((p)->p_md.md_astpending = 1) 212 213 extern struct cpu_info *cpu_info[X86_MAXPROCS]; 214 215 void cpu_boot_secondary_processors __P((void)); 216 void cpu_init_idle_pcbs __P((void)); 217 218 /* 219 * Preempt the current process if in interrupt from user mode, 220 * or after the current trap/syscall if in system mode. 221 */ 222 extern void need_resched __P((struct cpu_info *)); 223 224 #else /* !MULTIPROCESSOR */ 225 226 #define X86_MAXPROCS 1 227 228 #ifdef _KERNEL 229 230 #define curcpu() (&cpu_info_primary) 231 232 #endif 233 234 /* 235 * definitions of cpu-dependent requirements 236 * referenced in generic code 237 */ 238 #define cpu_number() 0 239 #define CPU_IS_PRIMARY(ci) 1 240 241 /* 242 * Preempt the current process if in interrupt from user mode, 243 * or after the current trap/syscall if in system mode. 244 */ 245 #define need_resched(ci) \ 246 do { \ 247 struct cpu_info *__ci = (ci); \ 248 __ci->ci_want_resched = 1; \ 249 if (__ci->ci_curlwp != NULL) \ 250 aston(__ci->ci_curlwp->l_proc); \ 251 } while (/*CONSTCOND*/0) 252 253 #define aston(p) ((p)->p_md.md_astpending = 1) 254 255 #endif /* MULTIPROCESSOR */ 256 257 extern u_int32_t cpus_attached; 258 259 #define curpcb curcpu()->ci_curpcb 260 #define curlwp curcpu()->ci_curlwp 261 262 /* 263 * Arguments to hardclock, softclock and statclock 264 * encapsulate the previous machine state in an opaque 265 * clockframe; for now, use generic intrframe. 266 * 267 * Note: Since spllowersoftclock() does not actually unmask the currently 268 * running (hardclock) interrupt, CLKF_BASEPRI() *must* always be 0; otherwise 269 * we could stall hardclock ticks if another interrupt takes too long. 270 */ 271 #define clockframe intrframe 272 273 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 274 #define CLKF_BASEPRI(frame) (0) 275 #define CLKF_PC(frame) ((frame)->if_eip) 276 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 277 278 /* 279 * This is used during profiling to integrate system time. It can safely 280 * assume that the process is resident. 281 */ 282 #define LWP_PC(l) ((l)->l_md.md_regs->tf_eip) 283 284 /* 285 * Give a profiling tick to the current process when the user profiling 286 * buffer pages are invalid. On the i386, request an ast to send us 287 * through trap(), marking the proc as needing a profiling tick. 288 */ 289 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston(p)) 290 291 /* 292 * Notify the current process (p) that it has a signal pending, 293 * process as soon as possible. 294 */ 295 #define signotify(p) aston(p) 296 297 /* 298 * We need a machine-independent name for this. 299 */ 300 extern void (*delay_func) __P((int)); 301 struct timeval; 302 extern void (*microtime_func) __P((struct timeval *)); 303 304 #define DELAY(x) (*delay_func)(x) 305 #define delay(x) (*delay_func)(x) 306 #define microtime(tv) (*microtime_func)(tv) 307 308 /* 309 * pull in #defines for kinds of processors 310 */ 311 #include <machine/cputypes.h> 312 313 struct cpu_nocpuid_nameclass { 314 int cpu_vendor; 315 const char *cpu_vendorname; 316 const char *cpu_name; 317 int cpu_class; 318 void (*cpu_setup) __P((struct cpu_info *)); 319 void (*cpu_cacheinfo) __P((struct cpu_info *)); 320 void (*cpu_info) __P((struct cpu_info *)); 321 }; 322 323 324 struct cpu_cpuid_nameclass { 325 const char *cpu_id; 326 int cpu_vendor; 327 const char *cpu_vendorname; 328 struct cpu_cpuid_family { 329 int cpu_class; 330 const char *cpu_models[CPU_MAXMODEL+2]; 331 void (*cpu_setup) __P((struct cpu_info *)); 332 void (*cpu_probe) __P((struct cpu_info *)); 333 void (*cpu_info) __P((struct cpu_info *)); 334 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 335 }; 336 337 #ifdef _KERNEL 338 extern int biosbasemem; 339 extern int biosextmem; 340 extern unsigned int cpu_feature; 341 extern int cpu; 342 extern int cpu_class; 343 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 344 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 345 346 extern int i386_use_fxsave; 347 extern int i386_has_sse; 348 extern int i386_has_sse2; 349 350 /* machdep.c */ 351 void dumpconf __P((void)); 352 int cpu_maxproc __P((void)); 353 void cpu_reset __P((void)); 354 void i386_init_pcb_tss_ldt __P((struct cpu_info *)); 355 void i386_proc0_tss_ldt_init __P((void)); 356 void i386_bufinit __P((void)); 357 358 /* identcpu.c */ 359 extern int tmx86_has_longrun; 360 extern u_int crusoe_longrun; 361 extern u_int crusoe_frequency; 362 extern u_int crusoe_voltage; 363 extern u_int crusoe_percentage; 364 extern u_int tmx86_set_longrun_mode(u_int); 365 void tmx86_get_longrun_status_all(void); 366 u_int tmx86_get_longrun_mode(void); 367 void identifycpu __P((struct cpu_info *)); 368 369 /* vm_machdep.c */ 370 void cpu_proc_fork __P((struct proc *, struct proc *)); 371 372 /* locore.s */ 373 struct region_descriptor; 374 void lgdt __P((struct region_descriptor *)); 375 void fillw __P((short, void *, size_t)); 376 377 struct pcb; 378 void savectx __P((struct pcb *)); 379 void switch_exit __P((struct lwp *, void (*)(struct lwp *))); 380 void proc_trampoline __P((void)); 381 382 /* clock.c */ 383 void initrtclock __P((void)); 384 void startrtclock __P((void)); 385 void i8254_delay __P((int)); 386 void i8254_microtime __P((struct timeval *)); 387 void i8254_initclocks __P((void)); 388 389 /* kern_microtime.c */ 390 391 extern struct timeval cc_microset_time; 392 void cc_microtime __P((struct timeval *)); 393 void cc_microset __P((struct cpu_info *)); 394 395 /* cpu.c */ 396 397 void cpu_probe_features __P((struct cpu_info *)); 398 399 /* npx.c */ 400 void npxsave_lwp __P((struct lwp *, int)); 401 void npxsave_cpu __P((struct cpu_info *, int)); 402 403 /* vm_machdep.c */ 404 int kvtop __P((caddr_t)); 405 406 #if !defined(_LKM) 407 #include "opt_math_emulate.h" 408 #endif 409 #ifdef MATH_EMULATE 410 /* math_emulate.c */ 411 int math_emulate __P((struct trapframe *, ksiginfo_t *)); 412 #endif 413 414 #if !defined(_LKM) 415 #include "opt_user_ldt.h" 416 #endif 417 #ifdef USER_LDT 418 /* sys_machdep.h */ 419 int i386_get_ldt __P((struct lwp *, void *, register_t *)); 420 int i386_set_ldt __P((struct lwp *, void *, register_t *)); 421 #endif 422 423 /* isa_machdep.c */ 424 void isa_defaultirq __P((void)); 425 int isa_nmi __P((void)); 426 427 #if !defined(_LKM) 428 #include "opt_vm86.h" 429 #endif 430 #ifdef VM86 431 /* vm86.c */ 432 void vm86_gpfault __P((struct lwp *, int)); 433 #endif /* VM86 */ 434 435 /* consinit.c */ 436 void kgdb_port_init __P((void)); 437 438 /* bus_machdep.c */ 439 void x86_bus_space_init __P((void)); 440 void x86_bus_space_mallocok __P((void)); 441 442 #endif /* _KERNEL */ 443 444 #include <machine/psl.h> 445 446 /* 447 * CTL_MACHDEP definitions. 448 */ 449 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 450 #define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 451 #define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 452 #define CPU_NKPDE 4 /* int: number of kernel PDEs */ 453 #define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 454 #define CPU_DISKINFO 6 /* struct disklist *: 455 * disk geometry information */ 456 #define CPU_FPU_PRESENT 7 /* int: FPU is present */ 457 #define CPU_OSFXSR 8 /* int: OS uses FXSAVE/FXRSTOR */ 458 #define CPU_SSE 9 /* int: OS/CPU supports SSE */ 459 #define CPU_SSE2 10 /* int: OS/CPU supports SSE2 */ 460 #define CPU_TMLR_MODE 11 /* int: longrun mode 461 * 0: minimum frequency 462 * 1: economy 463 * 2: performance 464 * 3: maximum frequency 465 */ 466 #define CPU_TMLR_FREQUENCY 12 /* int: current frequency */ 467 #define CPU_TMLR_VOLTAGE 13 /* int: curret voltage */ 468 #define CPU_TMLR_PERCENTAGE 14 /* int: current clock percentage */ 469 #define CPU_MAXID 15 /* number of valid machdep ids */ 470 471 #define CTL_MACHDEP_NAMES { \ 472 { 0, 0 }, \ 473 { "console_device", CTLTYPE_STRUCT }, \ 474 { "biosbasemem", CTLTYPE_INT }, \ 475 { "biosextmem", CTLTYPE_INT }, \ 476 { "nkpde", CTLTYPE_INT }, \ 477 { "booted_kernel", CTLTYPE_STRING }, \ 478 { "diskinfo", CTLTYPE_STRUCT }, \ 479 { "fpu_present", CTLTYPE_INT }, \ 480 { "osfxsr", CTLTYPE_INT }, \ 481 { "sse", CTLTYPE_INT }, \ 482 { "sse2", CTLTYPE_INT }, \ 483 { "tm_longrun_mode", CTLTYPE_INT }, \ 484 { "tm_longrun_frequency", CTLTYPE_INT }, \ 485 { "tm_longrun_voltage", CTLTYPE_INT }, \ 486 { "tm_longrun_percentage", CTLTYPE_INT }, \ 487 } 488 489 490 /* 491 * Structure for CPU_DISKINFO sysctl call. 492 * XXX this should be somewhere else. 493 */ 494 #define MAX_BIOSDISKS 16 495 496 struct disklist { 497 int dl_nbiosdisks; /* number of bios disks */ 498 struct biosdisk_info { 499 int bi_dev; /* BIOS device # (0x80 ..) */ 500 int bi_cyl; /* cylinders on disk */ 501 int bi_head; /* heads per track */ 502 int bi_sec; /* sectors per track */ 503 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 504 #define BIFLAG_INVALID 0x01 505 #define BIFLAG_EXTINT13 0x02 506 int bi_flags; 507 } dl_biosdisks[MAX_BIOSDISKS]; 508 509 int dl_nnativedisks; /* number of native disks */ 510 struct nativedisk_info { 511 char ni_devname[16]; /* native device name */ 512 int ni_nmatches; /* # of matches w/ BIOS */ 513 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 514 } dl_nativedisks[1]; /* actually longer */ 515 }; 516 517 #endif /* !_I386_CPU_H_ */ 518
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