cpu.h revision 1.4
1/* $NetBSD: cpu.h,v 1.4 2004/09/22 11:32:02 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_OPT) 41#include "opt_multiprocessor.h" 42#include "opt_lockdebug.h" 43#endif 44 45/* 46 * Definitions unique to x86-64 cpu support. 47 */ 48#include <machine/frame.h> 49#include <machine/segments.h> 50#include <machine/tss.h> 51#include <machine/intrdefs.h> 52#include <x86/cacheinfo.h> 53 54#include <sys/device.h> 55#include <sys/lock.h> 56#include <sys/cpu_data.h> 57#include <sys/cc_microtime.h> 58 59struct cpu_info { 60 struct device *ci_dev; 61 struct cpu_info *ci_self; 62 struct cpu_data ci_data; /* MI per-cpu data */ 63 struct cc_microtime_state ci_cc;/* cc_microtime stete */ 64 struct cpu_info *ci_next; 65 66 struct lwp *ci_curlwp; 67 struct simplelock ci_slock; 68 u_int ci_cpuid; 69 u_int ci_apicid; 70 71 u_int64_t ci_scratch; 72 73 struct lwp *ci_fpcurlwp; 74 int ci_fpsaving; 75 76 volatile u_int32_t ci_tlb_ipi_mask; 77 78 struct pcb *ci_curpcb; 79 struct pcb *ci_idle_pcb; 80 int ci_idle_tss_sel; 81 82 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 83 u_int32_t ci_ipending; 84 int ci_ilevel; 85 int ci_idepth; 86 u_int32_t ci_imask[NIPL]; 87 u_int32_t ci_iunmask[NIPL]; 88 89 paddr_t ci_idle_pcb_paddr; 90 u_int ci_flags; 91 u_int32_t ci_ipis; 92 93 u_int32_t ci_feature_flags; 94 u_int32_t ci_signature; 95 u_int64_t ci_tsc_freq; 96 97 struct cpu_functions *ci_func; 98 void (*cpu_setup) __P((struct cpu_info *)); 99 void (*ci_info) __P((struct cpu_info *)); 100 101 int ci_want_resched; 102 int ci_astpending; 103 struct trapframe *ci_ddb_regs; 104 105 struct x86_cache_info ci_cinfo[CAI_COUNT]; 106 107 char *ci_gdt; 108 109 struct x86_64_tss ci_doubleflt_tss; 110 struct x86_64_tss ci_ddbipi_tss; 111 112 char *ci_doubleflt_stack; 113 char *ci_ddbipi_stack; 114 115 struct evcnt ci_ipi_events[X86_NIPI]; 116}; 117 118#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 119#define CPUF_AP 0x0002 /* CPU is an AP */ 120#define CPUF_SP 0x0004 /* CPU is only processor */ 121#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 122 123#define CPUF_PRESENT 0x1000 /* CPU is present */ 124#define CPUF_RUNNING 0x2000 /* CPU is running */ 125#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 126#define CPUF_GO 0x8000 /* CPU should start running */ 127 128 129extern struct cpu_info cpu_info_primary; 130extern struct cpu_info *cpu_info_list; 131 132#define CPU_INFO_ITERATOR int 133#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 134 ci != NULL; ci = ci->ci_next 135 136#if defined(MULTIPROCESSOR) 137 138#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 139 140#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 141#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 142#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 143 144#define curcpu() ({struct cpu_info *__ci; \ 145 asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 146 __ci;}) 147#define cpu_number() (curcpu()->ci_cpuid) 148 149#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 150 151extern struct cpu_info *cpu_info[X86_MAXPROCS]; 152 153void cpu_boot_secondary_processors __P((void)); 154void cpu_init_idle_pcbs __P((void)); 155 156 157/* 158 * Preempt the current process if in interrupt from user mode, 159 * or after the current trap/syscall if in system mode. 160 */ 161extern void need_resched __P((struct cpu_info *)); 162 163#else /* !MULTIPROCESSOR */ 164 165#define X86_MAXPROCS 1 166 167#ifdef _KERNEL 168extern struct cpu_info cpu_info_primary; 169 170#define curcpu() (&cpu_info_primary) 171 172#endif 173 174/* 175 * definitions of cpu-dependent requirements 176 * referenced in generic code 177 */ 178#define cpu_number() 0 179#define CPU_IS_PRIMARY(ci) 1 180 181/* 182 * Preempt the current process if in interrupt from user mode, 183 * or after the current trap/syscall if in system mode. 184 */ 185 186#define need_resched(ci) \ 187do { \ 188 struct cpu_info *__ci = (ci); \ 189 __ci->ci_want_resched = 1; \ 190 if (__ci->ci_curlwp != NULL) \ 191 aston(__ci->ci_curlwp->l_proc); \ 192} while (/*CONSTCOND*/0) 193 194#endif 195 196#define aston(p) ((p)->p_md.md_astpending = 1) 197 198extern u_int32_t cpus_attached; 199 200#define curpcb curcpu()->ci_curpcb 201#define curlwp curcpu()->ci_curlwp 202 203/* 204 * Arguments to hardclock, softclock and statclock 205 * encapsulate the previous machine state in an opaque 206 * clockframe; for now, use generic intrframe. 207 */ 208#define clockframe intrframe 209 210#define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_rflags) 211#define CLKF_BASEPRI(frame) (0) 212#define CLKF_PC(frame) ((frame)->if_rip) 213#define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 214 215/* 216 * This is used during profiling to integrate system time. It can safely 217 * assume that the process is resident. 218 */ 219#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 220 221/* 222 * Give a profiling tick to the current process when the user profiling 223 * buffer pages are invalid. On the i386, request an ast to send us 224 * through trap(), marking the proc as needing a profiling tick. 225 */ 226#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston(p)) 227 228/* 229 * Notify the current process (p) that it has a signal pending, 230 * process as soon as possible. 231 */ 232#define signotify(p) aston(p) 233 234/* 235 * We need a machine-independent name for this. 236 */ 237extern void (*delay_func) __P((int)); 238struct timeval; 239extern void (*microtime_func) __P((struct timeval *)); 240 241#define DELAY(x) (*delay_func)(x) 242#define delay(x) (*delay_func)(x) 243#define microtime(tv) (*microtime_func)(tv) 244 245 246/* 247 * pull in #defines for kinds of processors 248 */ 249 250#ifdef _KERNEL 251extern int biosbasemem; 252extern int biosextmem; 253extern int cpu; 254extern int cpu_feature; 255extern int cpu_id; 256extern char cpu_vendor[]; 257extern int cpuid_level; 258 259/* identcpu.c */ 260 261void identifycpu __P((struct cpu_info *)); 262void cpu_probe_features __P((struct cpu_info *)); 263 264/* machdep.c */ 265void delay __P((int)); 266void dumpconf __P((void)); 267int cpu_maxproc __P((void)); 268void cpu_reset __P((void)); 269void x86_64_proc0_tss_ldt_init __P((void)); 270void x86_64_init_pcb_tss_ldt __P((struct cpu_info *)); 271void cpu_proc_fork __P((struct proc *, struct proc *)); 272 273struct region_descriptor; 274void lgdt __P((struct region_descriptor *)); 275void fillw __P((short, void *, size_t)); 276 277struct pcb; 278void savectx __P((struct pcb *)); 279void switch_exit __P((struct lwp *, void (*)(struct lwp *))); 280void proc_trampoline __P((void)); 281void child_trampoline __P((void)); 282 283/* clock.c */ 284void initrtclock __P((void)); 285void startrtclock __P((void)); 286void i8254_delay __P((int)); 287void i8254_microtime __P((struct timeval *)); 288void i8254_initclocks __P((void)); 289 290void cpu_init_msrs __P((struct cpu_info *)); 291 292 293/* vm_machdep.c */ 294int kvtop __P((caddr_t)); 295 296/* trap.c */ 297void child_return __P((void *)); 298 299/* consinit.c */ 300void kgdb_port_init __P((void)); 301 302/* bus_machdep.c */ 303void x86_bus_space_init __P((void)); 304void x86_bus_space_mallocok __P((void)); 305 306#endif /* _KERNEL */ 307 308#include <machine/psl.h> 309 310/* 311 * CTL_MACHDEP definitions. 312 */ 313#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 314#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 315#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 316#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 317#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 318#define CPU_DISKINFO 6 /* disk geometry information */ 319#define CPU_FPU_PRESENT 7 /* FPU is present */ 320#define CPU_MAXID 8 /* number of valid machdep ids */ 321 322#define CTL_MACHDEP_NAMES { \ 323 { 0, 0 }, \ 324 { "console_device", CTLTYPE_STRUCT }, \ 325 { "biosbasemem", CTLTYPE_INT }, \ 326 { "biosextmem", CTLTYPE_INT }, \ 327 { "nkpde", CTLTYPE_INT }, \ 328 { "booted_kernel", CTLTYPE_STRING }, \ 329 { "diskinfo", CTLTYPE_STRUCT }, \ 330 { "fpu_present", CTLTYPE_INT }, \ 331} 332 333 334/* 335 * Structure for CPU_DISKINFO sysctl call. 336 * XXX this should be somewhere else. 337 */ 338#define MAX_BIOSDISKS 16 339 340struct disklist { 341 int dl_nbiosdisks; /* number of bios disks */ 342 struct biosdisk_info { 343 int bi_dev; /* BIOS device # (0x80 ..) */ 344 int bi_cyl; /* cylinders on disk */ 345 int bi_head; /* heads per track */ 346 int bi_sec; /* sectors per track */ 347 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 348#define BIFLAG_INVALID 0x01 349#define BIFLAG_EXTINT13 0x02 350 int bi_flags; 351 } dl_biosdisks[MAX_BIOSDISKS]; 352 353 int dl_nnativedisks; /* number of native disks */ 354 struct nativedisk_info { 355 char ni_devname[16]; /* native device name */ 356 int ni_nmatches; /* # of matches w/ BIOS */ 357 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 358 } dl_nativedisks[1]; /* actually longer */ 359}; 360 361#endif /* !_AMD64_CPU_H_ */ 362