cpu.h revision 1.6
1/* $NetBSD: cpu.h,v 1.6 2004/09/25 11:08:47 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#endif 45 46/* 47 * Definitions unique to x86-64 cpu support. 48 */ 49#include <machine/frame.h> 50#include <machine/segments.h> 51#include <machine/tss.h> 52#include <machine/intrdefs.h> 53#include <x86/cacheinfo.h> 54 55#include <sys/device.h> 56#include <sys/lock.h> 57#include <sys/cpu_data.h> 58#include <sys/cc_microtime.h> 59 60struct cpu_info { 61 struct device *ci_dev; 62 struct cpu_info *ci_self; 63 struct cpu_data ci_data; /* MI per-cpu data */ 64 struct cc_microtime_state ci_cc;/* cc_microtime state */ 65 struct cpu_info *ci_next; 66 67 struct lwp *ci_curlwp; 68 struct simplelock ci_slock; 69 u_int ci_cpuid; 70 u_int ci_apicid; 71 72 u_int64_t ci_scratch; 73 74 struct lwp *ci_fpcurlwp; 75 int ci_fpsaving; 76 77 volatile u_int32_t ci_tlb_ipi_mask; 78 79 struct pcb *ci_curpcb; 80 struct pcb *ci_idle_pcb; 81 int ci_idle_tss_sel; 82 83 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 84 u_int32_t ci_ipending; 85 int ci_ilevel; 86 int ci_idepth; 87 u_int32_t ci_imask[NIPL]; 88 u_int32_t ci_iunmask[NIPL]; 89 90 paddr_t ci_idle_pcb_paddr; 91 u_int ci_flags; 92 u_int32_t ci_ipis; 93 94 u_int32_t ci_feature_flags; 95 u_int32_t ci_signature; 96 u_int64_t ci_tsc_freq; 97 98 struct cpu_functions *ci_func; 99 void (*cpu_setup) __P((struct cpu_info *)); 100 void (*ci_info) __P((struct cpu_info *)); 101 102 int ci_want_resched; 103 int ci_astpending; 104 struct trapframe *ci_ddb_regs; 105 106 struct x86_cache_info ci_cinfo[CAI_COUNT]; 107 108 char *ci_gdt; 109 110 struct x86_64_tss ci_doubleflt_tss; 111 struct x86_64_tss ci_ddbipi_tss; 112 113 char *ci_doubleflt_stack; 114 char *ci_ddbipi_stack; 115 116 struct evcnt ci_ipi_events[X86_NIPI]; 117}; 118 119#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 120#define CPUF_AP 0x0002 /* CPU is an AP */ 121#define CPUF_SP 0x0004 /* CPU is only processor */ 122#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 123 124#define CPUF_PRESENT 0x1000 /* CPU is present */ 125#define CPUF_RUNNING 0x2000 /* CPU is running */ 126#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 127#define CPUF_GO 0x8000 /* CPU should start running */ 128 129 130extern struct cpu_info cpu_info_primary; 131extern struct cpu_info *cpu_info_list; 132 133#define CPU_INFO_ITERATOR int 134#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 135 ci != NULL; ci = ci->ci_next 136 137#if defined(MULTIPROCESSOR) 138 139#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 140 141#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 142#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 143#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 144 145#define curcpu() ({struct cpu_info *__ci; \ 146 asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 147 __ci;}) 148#define cpu_number() (curcpu()->ci_cpuid) 149 150#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 151 152extern struct cpu_info *cpu_info[X86_MAXPROCS]; 153 154void cpu_boot_secondary_processors __P((void)); 155void cpu_init_idle_pcbs __P((void)); 156 157 158/* 159 * Preempt the current process if in interrupt from user mode, 160 * or after the current trap/syscall if in system mode. 161 */ 162extern void need_resched __P((struct cpu_info *)); 163 164#else /* !MULTIPROCESSOR */ 165 166#define X86_MAXPROCS 1 167 168extern struct cpu_info cpu_info_primary; 169 170#define curcpu() (&cpu_info_primary) 171 172/* 173 * definitions of cpu-dependent requirements 174 * referenced in generic code 175 */ 176#define cpu_number() 0 177#define CPU_IS_PRIMARY(ci) 1 178 179/* 180 * Preempt the current process if in interrupt from user mode, 181 * or after the current trap/syscall if in system mode. 182 */ 183 184#define need_resched(ci) \ 185do { \ 186 struct cpu_info *__ci = (ci); \ 187 __ci->ci_want_resched = 1; \ 188 if (__ci->ci_curlwp != NULL) \ 189 aston(__ci->ci_curlwp->l_proc); \ 190} while (/*CONSTCOND*/0) 191 192#endif 193 194#define aston(p) ((p)->p_md.md_astpending = 1) 195 196extern u_int32_t cpus_attached; 197 198#define curpcb curcpu()->ci_curpcb 199#define curlwp curcpu()->ci_curlwp 200 201/* 202 * Arguments to hardclock, softclock and statclock 203 * encapsulate the previous machine state in an opaque 204 * clockframe; for now, use generic intrframe. 205 */ 206#define clockframe intrframe 207 208#define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_rflags) 209#define CLKF_BASEPRI(frame) (0) 210#define CLKF_PC(frame) ((frame)->if_rip) 211#define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 212 213/* 214 * This is used during profiling to integrate system time. It can safely 215 * assume that the process is resident. 216 */ 217#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 218 219/* 220 * Give a profiling tick to the current process when the user profiling 221 * buffer pages are invalid. On the i386, request an ast to send us 222 * through trap(), marking the proc as needing a profiling tick. 223 */ 224#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston(p)) 225 226/* 227 * Notify the current process (p) that it has a signal pending, 228 * process as soon as possible. 229 */ 230#define signotify(p) aston(p) 231 232/* 233 * We need a machine-independent name for this. 234 */ 235extern void (*delay_func) __P((int)); 236struct timeval; 237extern void (*microtime_func) __P((struct timeval *)); 238 239#define DELAY(x) (*delay_func)(x) 240#define delay(x) (*delay_func)(x) 241#define microtime(tv) (*microtime_func)(tv) 242 243 244/* 245 * pull in #defines for kinds of processors 246 */ 247 248extern int biosbasemem; 249extern int biosextmem; 250extern int cpu; 251extern int cpu_feature; 252extern int cpu_id; 253extern char cpu_vendor[]; 254extern int cpuid_level; 255 256/* identcpu.c */ 257 258void identifycpu __P((struct cpu_info *)); 259void cpu_probe_features __P((struct cpu_info *)); 260 261/* machdep.c */ 262void delay __P((int)); 263void dumpconf __P((void)); 264int cpu_maxproc __P((void)); 265void cpu_reset __P((void)); 266void x86_64_proc0_tss_ldt_init __P((void)); 267void x86_64_init_pcb_tss_ldt __P((struct cpu_info *)); 268void cpu_proc_fork __P((struct proc *, struct proc *)); 269 270struct region_descriptor; 271void lgdt __P((struct region_descriptor *)); 272void fillw __P((short, void *, size_t)); 273 274struct pcb; 275void savectx __P((struct pcb *)); 276void switch_exit __P((struct lwp *, void (*)(struct lwp *))); 277void proc_trampoline __P((void)); 278void child_trampoline __P((void)); 279 280/* clock.c */ 281void initrtclock __P((void)); 282void startrtclock __P((void)); 283void i8254_delay __P((int)); 284void i8254_microtime __P((struct timeval *)); 285void i8254_initclocks __P((void)); 286 287void cpu_init_msrs __P((struct cpu_info *)); 288 289 290/* vm_machdep.c */ 291int kvtop __P((caddr_t)); 292 293/* trap.c */ 294void child_return __P((void *)); 295 296/* consinit.c */ 297void kgdb_port_init __P((void)); 298 299/* bus_machdep.c */ 300void x86_bus_space_init __P((void)); 301void x86_bus_space_mallocok __P((void)); 302 303#endif /* _KERNEL */ 304 305#include <machine/psl.h> 306 307/* 308 * CTL_MACHDEP definitions. 309 */ 310#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 311#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 312#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 313#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 314#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 315#define CPU_DISKINFO 6 /* disk geometry information */ 316#define CPU_FPU_PRESENT 7 /* FPU is present */ 317#define CPU_MAXID 8 /* number of valid machdep ids */ 318 319#define CTL_MACHDEP_NAMES { \ 320 { 0, 0 }, \ 321 { "console_device", CTLTYPE_STRUCT }, \ 322 { "biosbasemem", CTLTYPE_INT }, \ 323 { "biosextmem", CTLTYPE_INT }, \ 324 { "nkpde", CTLTYPE_INT }, \ 325 { "booted_kernel", CTLTYPE_STRING }, \ 326 { "diskinfo", CTLTYPE_STRUCT }, \ 327 { "fpu_present", CTLTYPE_INT }, \ 328} 329 330 331/* 332 * Structure for CPU_DISKINFO sysctl call. 333 * XXX this should be somewhere else. 334 */ 335#define MAX_BIOSDISKS 16 336 337struct disklist { 338 int dl_nbiosdisks; /* number of bios disks */ 339 struct biosdisk_info { 340 int bi_dev; /* BIOS device # (0x80 ..) */ 341 int bi_cyl; /* cylinders on disk */ 342 int bi_head; /* heads per track */ 343 int bi_sec; /* sectors per track */ 344 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 345#define BIFLAG_INVALID 0x01 346#define BIFLAG_EXTINT13 0x02 347 int bi_flags; 348 } dl_biosdisks[MAX_BIOSDISKS]; 349 350 int dl_nnativedisks; /* number of native disks */ 351 struct nativedisk_info { 352 char ni_devname[16]; /* native device name */ 353 int ni_nmatches; /* # of matches w/ BIOS */ 354 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 355 } dl_nativedisks[1]; /* actually longer */ 356}; 357 358#endif /* !_AMD64_CPU_H_ */ 359