cpu.h revision 1.39
1/* $NetBSD: cpu.h,v 1.39 2008/01/01 20:32:11 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 _AMD64_CPU_H_ 38#define _AMD64_CPU_H_ 39 40#if defined(_KERNEL) 41#if defined(_KERNEL_OPT) 42#include "opt_multiprocessor.h" 43#include "opt_lockdebug.h" 44#include "opt_xen.h" 45#endif 46 47/* 48 * Definitions unique to x86-64 cpu support. 49 */ 50#include <machine/frame.h> 51#include <machine/segments.h> 52#include <machine/tss.h> 53#include <machine/intrdefs.h> 54#include <x86/cacheinfo.h> 55 56#include <sys/device.h> 57#include <sys/simplelock.h> 58#include <sys/cpu_data.h> 59#include <sys/cc_microtime.h> 60 61struct pmap; 62 63struct cpu_info { 64 struct device *ci_dev; 65 struct cpu_info *ci_self; 66 67 /* 68 * Will be accessed by other CPUs. 69 */ 70 struct cpu_info *ci_next; 71 struct lwp *ci_curlwp; 72 struct pmap_cpu *ci_pmap_cpu; 73 struct lwp *ci_fpcurlwp; 74 int ci_fpsaving; 75 u_int ci_cpuid; 76 int ci_cpumask; /* (1 << CPU ID) */ 77 u_int ci_apicid; 78 uint8_t ci_initapicid; /* our intitial APIC ID */ 79 uint8_t ci_packageid; 80 uint8_t ci_coreid; 81 uint8_t ci_smtid; 82 struct cpu_data ci_data; /* MI per-cpu data */ 83 struct cc_microtime_state ci_cc;/* cc_microtime state */ 84 85 /* 86 * Private members. 87 */ 88 struct evcnt ci_tlb_evcnt; /* tlb shootdown counter */ 89 struct pmap *ci_pmap; /* current pmap */ 90 int ci_need_tlbwait; /* need to wait for TLB invalidations */ 91 int ci_want_pmapload; /* pmap_load() is needed */ 92 volatile int ci_tlbstate; /* one of TLBSTATE_ states. see below */ 93#define TLBSTATE_VALID 0 /* all user tlbs are valid */ 94#define TLBSTATE_LAZY 1 /* tlbs are valid but won't be kept uptodate */ 95#define TLBSTATE_STALE 2 /* we might have stale user tlbs */ 96 u_int64_t ci_scratch; 97#ifdef XEN 98 struct iplsource *ci_isources[NIPL]; 99#else 100 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 101#endif 102 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 103 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 104 105 /* The following must be aligned for cmpxchg8b. */ 106 struct { 107 uint32_t ipending; 108 int ilevel; 109 } ci_istate __aligned(8); 110#define ci_ipending ci_istate.ipending 111#define ci_ilevel ci_istate.ilevel 112 113 int ci_idepth; 114 u_int32_t ci_imask[NIPL]; 115 u_int32_t ci_iunmask[NIPL]; 116 117 paddr_t ci_idle_pcb_paddr; 118 u_int ci_flags; 119 u_int32_t ci_ipis; 120 121 int32_t ci_cpuid_level; 122 uint32_t ci_signature; 123 uint32_t ci_feature_flags; 124 uint32_t ci_feature2_flags; 125 uint32_t ci_vendor[4]; /* vendor string */ 126 u_int64_t ci_tsc_freq; 127 volatile uint32_t ci_lapic_counter; 128 129 const struct cpu_functions *ci_func; 130 void (*cpu_setup)(struct cpu_info *); 131 void (*ci_info)(struct cpu_info *); 132 133 int ci_want_resched; 134 struct trapframe *ci_ddb_regs; 135 136 struct x86_cache_info ci_cinfo[CAI_COUNT]; 137 138 char *ci_gdt; 139 140 struct x86_64_tss ci_doubleflt_tss; 141 struct x86_64_tss ci_ddbipi_tss; 142 143 char *ci_doubleflt_stack; 144 char *ci_ddbipi_stack; 145 146 struct evcnt ci_ipi_events[X86_NIPI]; 147 148 /* 149 * The following two are actually region_descriptors, 150 * but that would pollute the namespace. 151 */ 152 uint64_t ci_suspend_gdt; 153 uint16_t ci_suspend_gdt_padding; 154 uint64_t ci_suspend_idt; 155 uint16_t ci_suspend_idt_padding; 156 157 uint16_t ci_suspend_tr; 158 uint16_t ci_suspend_ldt; 159 uint32_t ci_suspend_fs_base_l; 160 uint32_t ci_suspend_fs_base_h; 161 uint32_t ci_suspend_gs_base_l; 162 uint32_t ci_suspend_gs_base_h; 163 uint32_t ci_suspend_gs_kernelbase_l; 164 uint32_t ci_suspend_gs_kernelbase_h; 165 uint32_t ci_suspend_msr_efer; 166 uint64_t ci_suspend_rbx; 167 uint64_t ci_suspend_rbp; 168 uint64_t ci_suspend_rsp; 169 uint64_t ci_suspend_r12; 170 uint64_t ci_suspend_r13; 171 uint64_t ci_suspend_r14; 172 uint64_t ci_suspend_r15; 173 uint64_t ci_suspend_rfl; 174 uint64_t ci_suspend_cr0; 175 uint64_t ci_suspend_cr2; 176 uint64_t ci_suspend_cr3; 177 uint64_t ci_suspend_cr4; 178 uint64_t ci_suspend_cr8; 179}; 180 181#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 182#define CPUF_AP 0x0002 /* CPU is an AP */ 183#define CPUF_SP 0x0004 /* CPU is only processor */ 184#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 185 186#define CPUF_PRESENT 0x1000 /* CPU is present */ 187#define CPUF_RUNNING 0x2000 /* CPU is running */ 188#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 189#define CPUF_GO 0x8000 /* CPU should start running */ 190 191 192extern struct cpu_info cpu_info_primary; 193extern struct cpu_info *cpu_info_list; 194 195#define CPU_INFO_ITERATOR int 196#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 197 ci != NULL; ci = ci->ci_next 198 199#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 200 201#define CPU_STARTUP(_ci, _target) ((_ci)->ci_func->start(_ci, _target)) 202#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 203#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 204 205#if defined(__GNUC__) && defined(_KERNEL) 206static struct cpu_info *x86_curcpu(void); 207static lwp_t *x86_curlwp(void); 208 209__inline static struct cpu_info * __unused 210x86_curcpu(void) 211{ 212 struct cpu_info *ci; 213 214 __asm volatile("movq %%gs:%1, %0" : 215 "=r" (ci) : 216 "m" 217 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 218 return ci; 219} 220 221__inline static lwp_t * __unused 222x86_curlwp(void) 223{ 224 lwp_t *l; 225 226 __asm volatile("movq %%gs:%1, %0" : 227 "=r" (l) : 228 "m" 229 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 230 return l; 231} 232#else /* __GNUC__ && _KERNEL */ 233/* For non-GCC and LKMs */ 234struct cpu_info *x86_curcpu(void); 235lwp_t *x86_curlwp(void); 236#endif /* __GNUC__ && _KERNEL */ 237 238#define cpu_number() (curcpu()->ci_cpuid) 239 240#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 241 242extern struct cpu_info *cpu_info[X86_MAXPROCS]; 243 244void cpu_boot_secondary_processors(void); 245void cpu_init_idle_lwps(void); 246 247#define aston(l) ((l)->l_md.md_astpending = 1) 248 249extern u_int32_t cpus_attached; 250 251#define curcpu() x86_curcpu() 252#define curlwp x86_curlwp() 253#define curpcb (&curlwp->l_addr->u_pcb) 254 255/* 256 * Arguments to hardclock, softclock and statclock 257 * encapsulate the previous machine state in an opaque 258 * clockframe; for now, use generic intrframe. 259 */ 260struct clockframe { 261 struct intrframe cf_if; 262}; 263 264#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_tf.tf_cs, \ 265 (frame)->cf_if.if_tf.tf_rflags) 266#define CLKF_PC(frame) ((frame)->cf_if.if_tf.tf_rip) 267#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 268 269/* 270 * This is used during profiling to integrate system time. It can safely 271 * assume that the process is resident. 272 */ 273#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 274 275/* 276 * Give a profiling tick to the current process when the user profiling 277 * buffer pages are invalid. On the i386, request an ast to send us 278 * through trap(), marking the proc as needing a profiling tick. 279 */ 280extern void cpu_need_proftick(struct lwp *); 281 282/* 283 * Notify an LWP that it has a signal pending, process as soon as possible. 284 */ 285extern void cpu_signotify(struct lwp *); 286 287/* 288 * We need a machine-independent name for this. 289 */ 290extern void (*delay_func)(unsigned int); 291 292#define DELAY(x) (*delay_func)(x) 293#define delay(x) (*delay_func)(x) 294 295 296/* 297 * pull in #defines for kinds of processors 298 */ 299 300extern int biosbasemem; 301extern int biosextmem; 302extern int cpu; 303extern int cpu_feature; 304extern int cpu_feature2; 305extern int cpu_id; 306extern int cpuid_level; 307extern char cpu_vendorname[]; 308 309/* identcpu.c */ 310 311void identifycpu(struct cpu_info *); 312void cpu_probe_features(struct cpu_info *); 313 314/* machdep.c */ 315void dumpconf(void); 316int cpu_maxproc(void); 317void cpu_reset(void); 318void x86_64_proc0_tss_ldt_init(void); 319void x86_64_init_pcb_tss_ldt(struct cpu_info *); 320void cpu_proc_fork(struct proc *, struct proc *); 321 322struct region_descriptor; 323void lgdt(struct region_descriptor *); 324#ifdef XEN 325void lgdt_finish(void); 326#endif 327void fillw(short, void *, size_t); 328 329struct pcb; 330void savectx(struct pcb *); 331void lwp_trampoline(void); 332void child_trampoline(void); 333 334#ifdef XEN 335void startrtclock(void); 336void xen_delay(unsigned int); 337void xen_initclocks(void); 338#else 339/* clock.c */ 340void initrtclock(u_long); 341void startrtclock(void); 342void i8254_delay(unsigned int); 343void i8254_microtime(struct timeval *); 344void i8254_initclocks(void); 345#endif 346 347void cpu_init_msrs(struct cpu_info *, bool); 348 349 350/* vm_machdep.c */ 351int kvtop(void *); 352 353/* trap.c */ 354void child_return(void *); 355 356/* consinit.c */ 357void kgdb_port_init(void); 358 359/* bus_machdep.c */ 360void x86_bus_space_init(void); 361void x86_bus_space_mallocok(void); 362 363#endif /* _KERNEL */ 364 365#include <machine/psl.h> 366 367/* 368 * CTL_MACHDEP definitions. 369 */ 370#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 371#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 372#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 373#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 374#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 375#define CPU_DISKINFO 6 /* disk geometry information */ 376#define CPU_FPU_PRESENT 7 /* FPU is present */ 377#define CPU_MAXID 8 /* number of valid machdep ids */ 378 379#define CTL_MACHDEP_NAMES { \ 380 { 0, 0 }, \ 381 { "console_device", CTLTYPE_STRUCT }, \ 382 { "biosbasemem", CTLTYPE_INT }, \ 383 { "biosextmem", CTLTYPE_INT }, \ 384 { "nkpde", CTLTYPE_INT }, \ 385 { "booted_kernel", CTLTYPE_STRING }, \ 386 { "diskinfo", CTLTYPE_STRUCT }, \ 387 { "fpu_present", CTLTYPE_INT }, \ 388} 389 390 391/* 392 * Structure for CPU_DISKINFO sysctl call. 393 * XXX this should be somewhere else. 394 */ 395#define MAX_BIOSDISKS 16 396 397struct disklist { 398 int dl_nbiosdisks; /* number of bios disks */ 399 struct biosdisk_info { 400 int bi_dev; /* BIOS device # (0x80 ..) */ 401 int bi_cyl; /* cylinders on disk */ 402 int bi_head; /* heads per track */ 403 int bi_sec; /* sectors per track */ 404 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 405#define BIFLAG_INVALID 0x01 406#define BIFLAG_EXTINT13 0x02 407 int bi_flags; 408 } dl_biosdisks[MAX_BIOSDISKS]; 409 410 int dl_nnativedisks; /* number of native disks */ 411 struct nativedisk_info { 412 char ni_devname[16]; /* native device name */ 413 int ni_nmatches; /* # of matches w/ BIOS */ 414 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 415 } dl_nativedisks[1]; /* actually longer */ 416}; 417 418#endif /* !_AMD64_CPU_H_ */ 419