1 /* $OpenBSD: cpu.h,v 1.141 2021/08/31 17:40:59 dv 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 _MACHINE_CPU_H_ 39 #define _MACHINE_CPU_H_ 40 41 /* 42 * Definitions unique to x86-64 cpu support. 43 */ 44 #ifdef _KERNEL 45 #include <machine/frame.h> 46 #include <machine/segments.h> /* USERMODE */ 47 #include <machine/cacheinfo.h> 48 #include <machine/intrdefs.h> 49 #endif /* _KERNEL */ 50 51 #include <sys/device.h> 52 #include <sys/rwlock.h> 53 #include <sys/sched.h> 54 #include <sys/sensors.h> 55 #include <sys/srp.h> 56 57 #ifdef _KERNEL 58 59 /* VMXON region (Intel) */ 60 struct vmxon_region { 61 uint32_t vr_revision; 62 }; 63 64 /* 65 * VMX for Intel CPUs 66 */ 67 struct vmx { 68 uint64_t vmx_cr0_fixed0; 69 uint64_t vmx_cr0_fixed1; 70 uint64_t vmx_cr4_fixed0; 71 uint64_t vmx_cr4_fixed1; 72 uint32_t vmx_vmxon_revision; 73 uint32_t vmx_msr_table_size; 74 uint32_t vmx_cr3_tgt_count; 75 uint64_t vmx_vm_func; 76 uint8_t vmx_has_l1_flush_msr; 77 }; 78 79 /* 80 * SVM for AMD CPUs 81 */ 82 struct svm { 83 uint32_t svm_max_asid; 84 uint8_t svm_flush_by_asid; 85 uint8_t svm_vmcb_clean; 86 }; 87 88 union vmm_cpu_cap { 89 struct vmx vcc_vmx; 90 struct svm vcc_svm; 91 }; 92 93 struct x86_64_tss; 94 struct cpu_info { 95 /* 96 * The beginning of this structure in mapped in the userspace "u-k" 97 * page tables, so that these first couple members can be accessed 98 * from the trampoline code. The ci_PAGEALIGN member defines where 99 * the part that is *not* visible begins, so don't put anything 100 * above it that must be kept hidden from userspace! 101 */ 102 u_int64_t ci_kern_cr3; /* U+K page table */ 103 u_int64_t ci_scratch; /* for U<-->K transition */ 104 105 #define ci_PAGEALIGN ci_dev 106 struct device *ci_dev; 107 struct cpu_info *ci_self; 108 struct schedstate_percpu ci_schedstate; /* scheduler state */ 109 struct cpu_info *ci_next; 110 111 struct proc *ci_curproc; 112 u_int ci_cpuid; 113 u_int ci_apicid; 114 u_int ci_acpi_proc_id; 115 u_int32_t ci_randseed; 116 117 u_int64_t ci_kern_rsp; /* kernel-only stack */ 118 u_int64_t ci_intr_rsp; /* U<-->K trampoline stack */ 119 u_int64_t ci_user_cr3; /* U-K page table */ 120 121 /* bits for mitigating Micro-architectural Data Sampling */ 122 char ci_mds_tmp[32]; /* 32byte aligned */ 123 void *ci_mds_buf; 124 125 struct pmap *ci_proc_pmap; /* last userspace pmap */ 126 struct pcb *ci_curpcb; 127 struct pcb *ci_idle_pcb; 128 129 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 130 u_int64_t ci_ipending; 131 int ci_ilevel; 132 int ci_idepth; 133 int ci_handled_intr_level; 134 u_int64_t ci_imask[NIPL]; 135 u_int64_t ci_iunmask[NIPL]; 136 #ifdef DIAGNOSTIC 137 int ci_mutex_level; 138 #endif 139 140 volatile u_int ci_flags; 141 u_int32_t ci_ipis; 142 143 u_int32_t ci_feature_flags; 144 u_int32_t ci_feature_eflags; 145 u_int32_t ci_feature_sefflags_ebx; 146 u_int32_t ci_feature_sefflags_ecx; 147 u_int32_t ci_feature_sefflags_edx; 148 u_int32_t ci_feature_amdspec_ebx; 149 u_int32_t ci_feature_tpmflags; 150 u_int32_t ci_pnfeatset; 151 u_int32_t ci_efeature_eax; 152 u_int32_t ci_efeature_ecx; 153 u_int32_t ci_brand[12]; 154 u_int32_t ci_amdcacheinfo[4]; 155 u_int32_t ci_extcacheinfo[4]; 156 u_int32_t ci_signature; 157 u_int32_t ci_family; 158 u_int32_t ci_model; 159 u_int32_t ci_cflushsz; 160 161 int ci_inatomic; 162 163 #define __HAVE_CPU_TOPOLOGY 164 u_int32_t ci_smt_id; 165 u_int32_t ci_core_id; 166 u_int32_t ci_pkg_id; 167 168 struct cpu_functions *ci_func; 169 void (*cpu_setup)(struct cpu_info *); 170 void (*ci_info)(struct cpu_info *); 171 172 struct device *ci_acpicpudev; 173 volatile u_int ci_mwait; 174 #define MWAIT_IN_IDLE 0x1 /* don't need IPI to wake */ 175 #define MWAIT_KEEP_IDLING 0x2 /* cleared by other cpus to wake me */ 176 #define MWAIT_ONLY 0x4 /* set if all idle states use mwait */ 177 #define MWAIT_IDLING (MWAIT_IN_IDLE | MWAIT_KEEP_IDLING) 178 179 int ci_want_resched; 180 181 struct x86_cache_info ci_cinfo[CAI_COUNT]; 182 183 struct x86_64_tss *ci_tss; 184 void *ci_gdt; 185 186 volatile int ci_ddb_paused; 187 #define CI_DDB_RUNNING 0 188 #define CI_DDB_SHOULDSTOP 1 189 #define CI_DDB_STOPPED 2 190 #define CI_DDB_ENTERDDB 3 191 #define CI_DDB_INDDB 4 192 193 #ifdef MULTIPROCESSOR 194 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 195 #endif 196 197 struct ksensordev ci_sensordev; 198 struct ksensor ci_sensor; 199 #if defined(GPROF) || defined(DDBPROF) 200 struct gmonparam *ci_gmon; 201 #endif 202 u_int32_t ci_vmm_flags; 203 #define CI_VMM_VMX (1 << 0) 204 #define CI_VMM_SVM (1 << 1) 205 #define CI_VMM_RVI (1 << 2) 206 #define CI_VMM_EPT (1 << 3) 207 #define CI_VMM_DIS (1 << 4) 208 union vmm_cpu_cap ci_vmm_cap; 209 paddr_t ci_vmxon_region_pa; 210 struct vmxon_region *ci_vmxon_region; 211 212 int64_t ci_tsc_skew; /* counter skew vs cpu0 */ 213 214 char ci_panicbuf[512]; 215 216 paddr_t ci_vmcs_pa; 217 struct rwlock ci_vmcs_lock; 218 }; 219 220 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 221 #define CPUF_AP 0x0002 /* CPU is an AP */ 222 #define CPUF_SP 0x0004 /* CPU is only processor */ 223 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 224 225 #define CPUF_IDENTIFY 0x0010 /* CPU may now identify */ 226 #define CPUF_IDENTIFIED 0x0020 /* CPU has been identified */ 227 228 #define CPUF_CONST_TSC 0x0040 /* CPU has constant TSC */ 229 #define CPUF_USERSEGS 0x0080 /* CPU has curproc's segs and FS.base */ 230 #define CPUF_INVAR_TSC 0x0100 /* CPU has invariant TSC */ 231 #define CPUF_USERXSTATE 0x0200 /* CPU has curproc's xsave state */ 232 233 #define CPUF_SYNCTSC 0x0800 /* Synchronize TSC */ 234 #define CPUF_PRESENT 0x1000 /* CPU is present */ 235 #define CPUF_RUNNING 0x2000 /* CPU is running */ 236 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 237 #define CPUF_GO 0x8000 /* CPU should start running */ 238 #define CPUF_PARK 0x10000 /* CPU should self-park in real mode */ 239 #define CPUF_VMM 0x20000 /* CPU is executing in VMM mode */ 240 241 #define PROC_PC(p) ((p)->p_md.md_regs->tf_rip) 242 #define PROC_STACK(p) ((p)->p_md.md_regs->tf_rsp) 243 244 struct cpu_info_full; 245 extern struct cpu_info_full cpu_info_full_primary; 246 #define cpu_info_primary (*(struct cpu_info *)((char *)&cpu_info_full_primary + 4096*2 - offsetof(struct cpu_info, ci_PAGEALIGN))) 247 248 extern struct cpu_info *cpu_info_list; 249 250 #define CPU_INFO_ITERATOR int 251 #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \ 252 ci != NULL; ci = ci->ci_next) 253 254 #define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0) 255 256 /* 257 * Preempt the current process if in interrupt from user mode, 258 * or after the current trap/syscall if in system mode. 259 */ 260 extern void need_resched(struct cpu_info *); 261 #define clear_resched(ci) (ci)->ci_want_resched = 0 262 263 #if defined(MULTIPROCESSOR) 264 265 #define MAXCPUS 64 /* bitmask */ 266 267 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 268 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 269 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 270 271 #define curcpu() ({struct cpu_info *__ci; \ 272 asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) \ 273 :"n" (offsetof(struct cpu_info, ci_self))); \ 274 __ci;}) 275 #define cpu_number() (curcpu()->ci_cpuid) 276 277 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 278 #define CPU_IS_RUNNING(ci) ((ci)->ci_flags & CPUF_RUNNING) 279 280 extern struct cpu_info *cpu_info[MAXCPUS]; 281 282 void cpu_boot_secondary_processors(void); 283 284 void cpu_kick(struct cpu_info *); 285 void cpu_unidle(struct cpu_info *); 286 287 #define CPU_BUSY_CYCLE() __asm volatile("pause": : : "memory") 288 289 #else /* !MULTIPROCESSOR */ 290 291 #define MAXCPUS 1 292 293 #ifdef _KERNEL 294 #define curcpu() (&cpu_info_primary) 295 296 #define cpu_kick(ci) 297 #define cpu_unidle(ci) 298 299 #define CPU_BUSY_CYCLE() do {} while (0) 300 301 #endif 302 303 /* 304 * definitions of cpu-dependent requirements 305 * referenced in generic code 306 */ 307 #define cpu_number() 0 308 #define CPU_IS_PRIMARY(ci) 1 309 #define CPU_IS_RUNNING(ci) 1 310 311 #endif /* MULTIPROCESSOR */ 312 313 #include <machine/cpufunc.h> 314 #include <machine/psl.h> 315 316 static inline unsigned int 317 cpu_rnd_messybits(void) 318 { 319 unsigned int hi, lo; 320 321 __asm volatile("rdtsc" : "=d" (hi), "=a" (lo)); 322 323 return (hi ^ lo); 324 } 325 326 #endif /* _KERNEL */ 327 328 #ifdef MULTIPROCESSOR 329 #include <sys/mplock.h> 330 #endif 331 332 #define aston(p) ((p)->p_md.md_astpending = 1) 333 334 #define curpcb curcpu()->ci_curpcb 335 336 /* 337 * Arguments to hardclock, softclock and statclock 338 * encapsulate the previous machine state in an opaque 339 * clockframe; for now, use generic intrframe. 340 */ 341 #define clockframe intrframe 342 343 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_rflags) 344 #define CLKF_PC(frame) ((frame)->if_rip) 345 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 346 347 /* 348 * Give a profiling tick to the current process when the user profiling 349 * buffer pages are invalid. On the i386, request an ast to send us 350 * through usertrap(), marking the proc as needing a profiling tick. 351 */ 352 #define need_proftick(p) aston(p) 353 354 void signotify(struct proc *); 355 356 /* 357 * We need a machine-independent name for this. 358 */ 359 extern void (*delay_func)(int); 360 struct timeval; 361 362 #define DELAY(x) (*delay_func)(x) 363 #define delay(x) (*delay_func)(x) 364 365 366 #ifdef _KERNEL 367 /* locore.S */ 368 extern int biosbasemem; 369 extern int biosextmem; 370 extern int cpu; 371 extern int cpu_feature; 372 extern int cpu_ebxfeature; 373 extern int cpu_ecxfeature; 374 extern int cpu_perf_eax; 375 extern int cpu_perf_ebx; 376 extern int cpu_perf_edx; 377 extern int cpu_apmi_edx; 378 extern int ecpu_ecxfeature; 379 extern int cpu_id; 380 extern char cpu_vendor[]; 381 extern int cpuid_level; 382 extern int cpuspeed; 383 extern int cpu_meltdown; 384 385 /* cpu.c */ 386 extern u_int cpu_mwait_size; 387 extern u_int cpu_mwait_states; 388 389 /* identcpu.c */ 390 void identifycpu(struct cpu_info *); 391 int cpu_amd64speed(int *); 392 393 /* machdep.c */ 394 void dumpconf(void); 395 void cpu_reset(void); 396 void x86_64_proc0_tss_ldt_init(void); 397 void cpu_proc_fork(struct proc *, struct proc *); 398 int amd64_pa_used(paddr_t); 399 extern void (*cpu_idle_cycle_fcn)(void); 400 401 struct region_descriptor; 402 void lgdt(struct region_descriptor *); 403 404 struct pcb; 405 void savectx(struct pcb *); 406 void switch_exit(struct proc *, void (*)(struct proc *)); 407 void proc_trampoline(void); 408 409 /* clock.c */ 410 extern void (*initclock_func)(void); 411 void startclocks(void); 412 void rtcinit(void); 413 void rtcstart(void); 414 void rtcstop(void); 415 void i8254_delay(int); 416 void i8254_initclocks(void); 417 void i8254_startclock(void); 418 void i8254_inittimecounter(void); 419 void i8254_inittimecounter_simple(void); 420 421 /* i8259.c */ 422 void i8259_default_setup(void); 423 424 void cpu_init_msrs(struct cpu_info *); 425 void cpu_tsx_disable(struct cpu_info *); 426 427 /* dkcsum.c */ 428 void dkcsumattach(void); 429 430 /* bus_machdep.c */ 431 void x86_bus_space_init(void); 432 void x86_bus_space_mallocok(void); 433 434 /* powernow-k8.c */ 435 void k8_powernow_init(struct cpu_info *); 436 void k8_powernow_setperf(int); 437 438 /* k1x-pstate.c */ 439 void k1x_init(struct cpu_info *); 440 void k1x_setperf(int); 441 442 void est_init(struct cpu_info *); 443 void est_setperf(int); 444 445 #ifdef MULTIPROCESSOR 446 /* mp_setperf.c */ 447 void mp_setperf_init(void); 448 #endif 449 450 #endif /* _KERNEL */ 451 452 /* 453 * CTL_MACHDEP definitions. 454 */ 455 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 456 #define CPU_BIOS 2 /* BIOS variables */ 457 #define CPU_BLK2CHR 3 /* convert blk maj into chr one */ 458 #define CPU_CHR2BLK 4 /* convert chr maj into blk one */ 459 #define CPU_ALLOWAPERTURE 5 /* allow mmap of /dev/xf86 */ 460 #define CPU_CPUVENDOR 6 /* cpuid vendor string */ 461 #define CPU_CPUID 7 /* cpuid */ 462 #define CPU_CPUFEATURE 8 /* cpuid features */ 463 #define CPU_KBDRESET 10 /* keyboard reset under pcvt */ 464 #define CPU_XCRYPT 12 /* supports VIA xcrypt in userland */ 465 #define CPU_LIDACTION 14 /* action caused by lid close */ 466 #define CPU_FORCEUKBD 15 /* Force ukbd(4) as console keyboard */ 467 #define CPU_TSCFREQ 16 /* TSC frequency */ 468 #define CPU_INVARIANTTSC 17 /* has invariant TSC */ 469 #define CPU_PWRACTION 18 /* action caused by power button */ 470 #define CPU_MAXID 19 /* number of valid machdep ids */ 471 472 #define CTL_MACHDEP_NAMES { \ 473 { 0, 0 }, \ 474 { "console_device", CTLTYPE_STRUCT }, \ 475 { "bios", CTLTYPE_INT }, \ 476 { "blk2chr", CTLTYPE_STRUCT }, \ 477 { "chr2blk", CTLTYPE_STRUCT }, \ 478 { "allowaperture", CTLTYPE_INT }, \ 479 { "cpuvendor", CTLTYPE_STRING }, \ 480 { "cpuid", CTLTYPE_INT }, \ 481 { "cpufeature", CTLTYPE_INT }, \ 482 { 0, 0 }, \ 483 { "kbdreset", CTLTYPE_INT }, \ 484 { 0, 0 }, \ 485 { "xcrypt", CTLTYPE_INT }, \ 486 { 0, 0 }, \ 487 { "lidaction", CTLTYPE_INT }, \ 488 { "forceukbd", CTLTYPE_INT }, \ 489 { "tscfreq", CTLTYPE_QUAD }, \ 490 { "invarianttsc", CTLTYPE_INT }, \ 491 { "pwraction", CTLTYPE_INT }, \ 492 } 493 494 #endif /* !_MACHINE_CPU_H_ */ 495