cpu.h revision 1.88
1 /* $NetBSD: cpu.h,v 1.88 2002/11/02 07:15:07 perry 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 39 */ 40 41 #ifndef _I386_CPU_H_ 42 #define _I386_CPU_H_ 43 44 #if defined(_KERNEL_OPT) 45 #include "opt_multiprocessor.h" 46 #endif 47 48 /* 49 * Definitions unique to i386 cpu support. 50 */ 51 #include <machine/frame.h> 52 #include <machine/segments.h> 53 #include <machine/tss.h> 54 55 #include <sys/device.h> 56 #include <sys/lock.h> /* will also get LOCKDEBUG */ 57 #include <sys/sched.h> 58 59 struct i386_cache_info { 60 uint8_t cai_index; 61 uint8_t cai_desc; 62 uint8_t cai_associativity; 63 u_int cai_totalsize; /* #entries for TLB, bytes for cache */ 64 u_int cai_linesize; /* or page size for TLB */ 65 const char *cai_string; 66 }; 67 68 #define CAI_ITLB 0 /* Instruction TLB (4K pages) */ 69 #define CAI_ITLB2 1 /* Instruction TLB (2/4M pages) */ 70 #define CAI_DTLB 2 /* Data TLB (4K pages) */ 71 #define CAI_DTLB2 3 /* Data TLB (2/4M pages) */ 72 #define CAI_ICACHE 4 /* Instruction cache */ 73 #define CAI_DCACHE 5 /* Data cache */ 74 #define CAI_L2CACHE 6 /* Level 2 cache */ 75 76 #define CAI_COUNT 7 77 78 struct mp_intr_map; 79 80 /* 81 * a bunch of this belongs in cpuvar.h; move it later.. 82 */ 83 84 struct cpu_info { 85 struct device *ci_dev; /* pointer to our device */ 86 struct cpu_info *ci_self; /* self-pointer */ 87 void *ci_tlog_base; /* Trap log base */ 88 int32_t ci_tlog_offset; /* Trap log current offset */ 89 struct schedstate_percpu ci_schedstate; /* scheduler state */ 90 struct cpu_info *ci_next; /* next cpu */ 91 92 /* 93 * Public members. 94 */ 95 struct proc *ci_curproc; /* current owner of the processor */ 96 struct simplelock ci_slock; /* lock on this data structure */ 97 cpuid_t ci_cpuid; /* our CPU ID */ 98 u_long ci_spin_locks; /* # of spin locks held */ 99 u_long ci_simple_locks; /* # of simple locks held */ 100 101 /* 102 * Private members. 103 */ 104 struct proc *ci_fpcurproc; /* current owner of the FPU */ 105 int ci_fpsaving; /* save in progress */ 106 107 struct pcb *ci_curpcb; /* VA of current HW PCB */ 108 struct pcb *ci_idle_pcb; /* VA of current PCB */ 109 int ci_idle_tss_sel; /* TSS selector of idle PCB */ 110 111 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ 112 u_int32_t ci_flags; /* flags; see below */ 113 u_int32_t ci_ipis; /* interprocessor interrupts pending */ 114 int sc_apic_version; /* local APIC version */ 115 116 int32_t ci_cpuid_level; 117 u_int32_t ci_signature; /* X86 cpuid type */ 118 u_int32_t ci_feature_flags;/* X86 CPUID feature bits */ 119 u_int32_t ci_cpu_class; /* CPU class */ 120 u_int32_t ci_brand_id; /* Intel brand id */ 121 u_int32_t ci_vendor[4]; /* vendor string */ 122 u_int32_t ci_cpu_serial[3]; /* PIII serial number */ 123 u_int64_t ci_tsc_freq; /* cpu cycles/second */ 124 125 struct cpu_functions *ci_func; /* start/stop functions */ 126 void (*cpu_setup) __P((struct cpu_info *)); 127 /* proc-dependant init */ 128 void (*ci_info) __P((struct cpu_info *)); 129 130 int ci_want_resched; 131 int ci_astpending; 132 struct trapframe *ci_ddb_regs; 133 134 u_int ci_cflush_lsize; /* CFLUSH insn line size */ 135 struct i386_cache_info ci_cinfo[CAI_COUNT]; 136 137 /* 138 * Variables used by tsc_microtime(). 139 */ 140 struct timeval ci_tsc_time; 141 int64_t ci_tsc_tsc; 142 int64_t ci_tsc_ms_delta; 143 int64_t ci_tsc_denom; 144 145 union descriptor *ci_gdt; 146 147 volatile u_int32_t ci_tlb_ipi_mask; 148 149 struct i386tss ci_doubleflt_tss; 150 struct i386tss ci_ddbipi_tss; 151 152 char *ci_doubleflt_stack; 153 char *ci_ddbipi_stack; 154 }; 155 156 /* 157 * Processor flag notes: The "primary" CPU has certain MI-defined 158 * roles (mostly relating to hardclock handling); we distinguish 159 * betwen the processor which booted us, and the processor currently 160 * holding the "primary" role just to give us the flexibility later to 161 * change primaries should we be sufficiently twisted. 162 */ 163 164 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 165 #define CPUF_AP 0x0002 /* CPU is an AP */ 166 #define CPUF_SP 0x0004 /* CPU is only processor */ 167 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 168 169 #define CPUF_APIC_CD 0x0010 /* CPU has apic configured */ 170 171 #define CPUF_PRESENT 0x1000 /* CPU is present */ 172 #define CPUF_RUNNING 0x2000 /* CPU is running */ 173 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 174 #define CPUF_GO 0x8000 /* CPU should start running */ 175 176 /* 177 * We statically allocate the CPU info for the primary CPU (or, 178 * the only CPU on uniprocessors), and the primary CPU is the 179 * first CPU on the CPU info list. 180 */ 181 extern struct cpu_info cpu_info_primary; 182 extern struct cpu_info *cpu_info_list; 183 184 #define CPU_INFO_ITERATOR int 185 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 186 ci != NULL; ci = ci->ci_next 187 188 #if defined(MULTIPROCESSOR) 189 190 #define I386_MAXPROCS 32 /* because we use a bitmask */ 191 192 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 193 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 194 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 195 196 #define curcpu() ({struct cpu_info *ci; \ 197 asm volatile("movl %%fs:4,%0" : "=r" (ci)); \ 198 ci;}) 199 #define cpu_number() (curcpu()->ci_cpuid) 200 201 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 202 203 #if 0 204 #define i386_ipisend(ci) (((ci) != curcpu()) ? i386_send_ipi((ci),0) : 0) 205 #else 206 #define i386_ipisend(ci) 0 207 #endif 208 209 #define aston(ci) ((ci)->ci_astpending = 1, i386_ipisend(ci)) 210 211 extern struct cpu_info *cpu_info[I386_MAXPROCS]; 212 213 void cpu_boot_secondary_processors __P((void)); 214 void cpu_init_idle_pcbs __P((void)); 215 216 /* 217 * Preempt the current process if in interrupt from user mode, 218 * or after the current trap/syscall if in system mode. 219 */ 220 extern void need_resched __P((struct cpu_info *)); 221 222 #else /* !MULTIPROCESSOR */ 223 224 #define I386_MAXPROCS 1 225 226 #ifdef _KERNEL 227 extern struct cpu_info cpu_info_primary; 228 229 #define curcpu() (&cpu_info_primary) 230 #endif 231 232 /* 233 * definitions of cpu-dependent requirements 234 * referenced in generic code 235 */ 236 #define cpu_number() 0 237 238 /* 239 * Preempt the current process if in interrupt from user mode, 240 * or after the current trap/syscall if in system mode. 241 */ 242 #define need_resched(ci) \ 243 do { \ 244 struct cpu_info *__ci = (ci); \ 245 __ci->ci_want_resched = 1; \ 246 aston(__ci); \ 247 } while (/*CONSTCOND*/ 0) 248 249 #define aston(ci) (curcpu()->ci_astpending = 1) 250 251 #endif 252 253 #define curpcb curcpu()->ci_curpcb 254 #define curproc curcpu()->ci_curproc 255 256 /* 257 * Arguments to hardclock, softclock and statclock 258 * encapsulate the previous machine state in an opaque 259 * clockframe; for now, use generic intrframe. 260 * 261 * Note: Since spllowersoftclock() does not actually unmask the currently 262 * running (hardclock) interrupt, CLKF_BASEPRI() *must* always be 0; otherwise 263 * we could stall hardclock ticks if another interrupt takes too long. 264 */ 265 #define clockframe intrframe 266 267 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 268 #define CLKF_BASEPRI(frame) (0) 269 #define CLKF_PC(frame) ((frame)->if_eip) 270 #define CLKF_INTR(frame) ((frame)->if_ppl & (1 << IPL_TAGINTR)) 271 272 /* 273 * This is used during profiling to integrate system time. It can safely 274 * assume that the process is resident. 275 */ 276 #define PROC_PC(p) ((p)->p_md.md_regs->tf_eip) 277 278 /* 279 * Give a profiling tick to the current process when the user profiling 280 * buffer pages are invalid. On the i386, request an ast to send us 281 * through trap(), marking the proc as needing a profiling tick. 282 */ 283 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston(p->p_cpu)) 284 285 /* 286 * Notify the current process (p) that it has a signal pending, 287 * process as soon as possible. 288 */ 289 #define signotify(p) aston(p->p_cpu) 290 291 /* 292 * We need a machine-independent name for this. 293 */ 294 extern void (*delay_func) __P((int)); 295 struct timeval; 296 extern void (*microtime_func) __P((struct timeval *)); 297 298 #define DELAY(x) (*delay_func)(x) 299 #define delay(x) (*delay_func)(x) 300 #define microtime(tv) (*microtime_func)(tv) 301 302 /* 303 * pull in #defines for kinds of processors 304 */ 305 #include <machine/cputypes.h> 306 307 struct cpu_nocpuid_nameclass { 308 int cpu_vendor; 309 const char *cpu_vendorname; 310 const char *cpu_name; 311 int cpu_class; 312 void (*cpu_setup) __P((struct cpu_info *)); 313 void (*cpu_cacheinfo) __P((struct cpu_info *)); 314 void (*cpu_info) __P((struct cpu_info *)); 315 }; 316 317 318 struct cpu_cpuid_nameclass { 319 const char *cpu_id; 320 int cpu_vendor; 321 const char *cpu_vendorname; 322 struct cpu_cpuid_family { 323 int cpu_class; 324 const char *cpu_models[CPU_MAXMODEL+2]; 325 void (*cpu_setup) __P((struct cpu_info *)); 326 void (*cpu_probe) __P((struct cpu_info *)); 327 void (*cpu_info) __P((struct cpu_info *)); 328 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 329 }; 330 331 #ifdef _KERNEL 332 extern int biosbasemem; 333 extern int biosextmem; 334 extern int cpu_feature; 335 extern int cpu; 336 extern int cpu_class; 337 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 338 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 339 340 extern int i386_use_fxsave; 341 extern int i386_has_sse; 342 extern int i386_has_sse2; 343 344 /* machdep.c */ 345 void dumpconf __P((void)); 346 void cpu_reset __P((void)); 347 void i386_init_pcb_tss_ldt __P((struct cpu_info *)); 348 void i386_proc0_tss_ldt_init __P((void)); 349 void i386_bufinit __P((void)); 350 351 /* locore.s */ 352 struct region_descriptor; 353 void lgdt __P((struct region_descriptor *)); 354 void fillw __P((short, void *, size_t)); 355 356 struct pcb; 357 void savectx __P((struct pcb *)); 358 void switch_exit __P((struct proc *)); 359 void proc_trampoline __P((void)); 360 361 /* clock.c */ 362 void initrtclock __P((void)); 363 void startrtclock __P((void)); 364 void i8254_delay __P((int)); 365 void i8254_microtime __P((struct timeval *)); 366 void i8254_initclocks __P((void)); 367 368 /* tsc_microtime.c */ 369 370 void tsc_microtime __P((struct timeval *)); 371 void tsc_microset __P((struct cpu_info *)); 372 373 /* cpu.c */ 374 375 void cpu_probe_features __P((struct cpu_info *)); 376 377 /* npx.c */ 378 void npxsave_proc __P((struct proc *, int)); 379 void npxsave_cpu __P((struct cpu_info *, int)); 380 381 /* vm_machdep.c */ 382 int kvtop __P((caddr_t)); 383 384 #if !defined(_LKM) 385 #include "opt_math_emulate.h" 386 #endif 387 #ifdef MATH_EMULATE 388 /* math_emulate.c */ 389 int math_emulate __P((struct trapframe *)); 390 #endif 391 392 #if !defined(_LKM) 393 #include "opt_user_ldt.h" 394 #endif 395 #ifdef USER_LDT 396 /* sys_machdep.h */ 397 int i386_get_ldt __P((struct proc *, void *, register_t *)); 398 int i386_set_ldt __P((struct proc *, void *, register_t *)); 399 #endif 400 401 /* isa_machdep.c */ 402 void isa_defaultirq __P((void)); 403 int isa_nmi __P((void)); 404 405 #if !defined(_LKM) 406 #include "opt_vm86.h" 407 #endif 408 #ifdef VM86 409 /* vm86.c */ 410 void vm86_gpfault __P((struct proc *, int)); 411 #endif /* VM86 */ 412 413 /* consinit.c */ 414 void kgdb_port_init __P((void)); 415 416 /* bus_machdep.c */ 417 void i386_bus_space_init __P((void)); 418 void i386_bus_space_mallocok __P((void)); 419 420 #endif /* _KERNEL */ 421 422 #include <machine/psl.h> 423 424 /* 425 * CTL_MACHDEP definitions. 426 */ 427 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 428 #define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 429 #define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 430 #define CPU_NKPDE 4 /* int: number of kernel PDEs */ 431 #define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 432 #define CPU_DISKINFO 6 /* struct disklist *: 433 * disk geometry information */ 434 #define CPU_FPU_PRESENT 7 /* int: FPU is present */ 435 #define CPU_OSFXSR 8 /* int: OS uses FXSAVE/FXRSTOR */ 436 #define CPU_SSE 9 /* int: OS/CPU supports SSE */ 437 #define CPU_SSE2 10 /* int: OS/CPU supports SSE2 */ 438 #define CPU_TMLR_MODE 11 /* int: longrun mode 439 * 0: minimum frequency 440 * 1: economy 441 * 2: performance 442 * 3: maximum frequency 443 */ 444 #define CPU_TMLR_FREQUENCY 12 /* int: current frequency */ 445 #define CPU_TMLR_VOLTAGE 13 /* int: curret voltage */ 446 #define CPU_TMLR_PERCENTAGE 14 /* int: current clock percentage */ 447 #define CPU_MAXID 15 /* number of valid machdep ids */ 448 449 #define CTL_MACHDEP_NAMES { \ 450 { 0, 0 }, \ 451 { "console_device", CTLTYPE_STRUCT }, \ 452 { "biosbasemem", CTLTYPE_INT }, \ 453 { "biosextmem", CTLTYPE_INT }, \ 454 { "nkpde", CTLTYPE_INT }, \ 455 { "booted_kernel", CTLTYPE_STRING }, \ 456 { "diskinfo", CTLTYPE_STRUCT }, \ 457 { "fpu_present", CTLTYPE_INT }, \ 458 { "osfxsr", CTLTYPE_INT }, \ 459 { "sse", CTLTYPE_INT }, \ 460 { "sse2", CTLTYPE_INT }, \ 461 { "tm_longrun_mode", CTLTYPE_INT }, \ 462 { "tm_longrun_frequency", CTLTYPE_INT }, \ 463 { "tm_longrun_voltage", CTLTYPE_INT }, \ 464 { "tm_longrun_percentage", CTLTYPE_INT }, \ 465 } 466 467 468 /* 469 * Structure for CPU_DISKINFO sysctl call. 470 * XXX this should be somewhere else. 471 */ 472 #define MAX_BIOSDISKS 16 473 474 struct disklist { 475 int dl_nbiosdisks; /* number of bios disks */ 476 struct biosdisk_info { 477 int bi_dev; /* BIOS device # (0x80 ..) */ 478 int bi_cyl; /* cylinders on disk */ 479 int bi_head; /* heads per track */ 480 int bi_sec; /* sectors per track */ 481 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 482 #define BIFLAG_INVALID 0x01 483 #define BIFLAG_EXTINT13 0x02 484 int bi_flags; 485 } dl_biosdisks[MAX_BIOSDISKS]; 486 487 int dl_nnativedisks; /* number of native disks */ 488 struct nativedisk_info { 489 char ni_devname[16]; /* native device name */ 490 int ni_nmatches; /* # of matches w/ BIOS */ 491 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 492 } dl_nativedisks[1]; /* actually longer */ 493 }; 494 495 #endif /* !_I386_CPU_H_ */ 496
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