cpu.h revision 1.13
1/* $NetBSD: cpu.h,v 1.13 2007/02/09 21:55:01 ad 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 void *ci_self200; /* self + 0x200, see lock_stubs.S */ 64 struct cpu_data ci_data; /* MI per-cpu data */ 65 struct cc_microtime_state ci_cc;/* cc_microtime state */ 66 struct cpu_info *ci_next; 67 68 struct lwp *ci_curlwp; 69 struct simplelock ci_slock; 70 u_int ci_cpuid; 71 u_int ci_apicid; 72 73 u_int64_t ci_scratch; 74 75 struct lwp *ci_fpcurlwp; 76 int ci_fpsaving; 77 78 volatile u_int32_t ci_tlb_ipi_mask; 79 80 struct pcb *ci_curpcb; 81 struct pcb *ci_idle_pcb; 82 int ci_idle_tss_sel; 83 84 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 85 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 86 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 87 88 /* The following must be aligned for cmpxchg8b. */ 89 struct { 90 uint32_t ipending; 91 int ilevel; 92 } ci_istate __aligned(8); 93#define ci_ipending ci_istate.ipending 94#define ci_ilevel ci_istate.ilevel 95 96 int ci_idepth; 97 u_int32_t ci_imask[NIPL]; 98 u_int32_t ci_iunmask[NIPL]; 99 100 paddr_t ci_idle_pcb_paddr; 101 u_int ci_flags; 102 u_int32_t ci_ipis; 103 104 u_int32_t ci_feature_flags; 105 u_int32_t ci_signature; 106 u_int64_t ci_tsc_freq; 107 108 struct cpu_functions *ci_func; 109 void (*cpu_setup) __P((struct cpu_info *)); 110 void (*ci_info) __P((struct cpu_info *)); 111 112 int ci_want_resched; 113 int ci_astpending; 114 struct trapframe *ci_ddb_regs; 115 116 struct x86_cache_info ci_cinfo[CAI_COUNT]; 117 118 char *ci_gdt; 119 120 struct x86_64_tss ci_doubleflt_tss; 121 struct x86_64_tss ci_ddbipi_tss; 122 123 char *ci_doubleflt_stack; 124 char *ci_ddbipi_stack; 125 126 struct evcnt ci_ipi_events[X86_NIPI]; 127}; 128 129#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 130#define CPUF_AP 0x0002 /* CPU is an AP */ 131#define CPUF_SP 0x0004 /* CPU is only processor */ 132#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 133 134#define CPUF_PRESENT 0x1000 /* CPU is present */ 135#define CPUF_RUNNING 0x2000 /* CPU is running */ 136#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 137#define CPUF_GO 0x8000 /* CPU should start running */ 138 139 140extern struct cpu_info cpu_info_primary; 141extern struct cpu_info *cpu_info_list; 142 143#define CPU_INFO_ITERATOR int 144#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 145 ci != NULL; ci = ci->ci_next 146 147#if defined(MULTIPROCESSOR) 148 149#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 150 151#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 152#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 153#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 154 155#define curcpu() ({struct cpu_info *__ci; \ 156 __asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 157 __ci;}) 158#define cpu_number() (curcpu()->ci_cpuid) 159 160#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 161 162extern struct cpu_info *cpu_info[X86_MAXPROCS]; 163 164void cpu_boot_secondary_processors __P((void)); 165void cpu_init_idle_pcbs __P((void)); 166 167 168#else /* !MULTIPROCESSOR */ 169 170#define X86_MAXPROCS 1 171 172extern struct cpu_info cpu_info_primary; 173 174#define curcpu() (&cpu_info_primary) 175 176/* 177 * definitions of cpu-dependent requirements 178 * referenced in generic code 179 */ 180#define cpu_number() 0 181#define CPU_IS_PRIMARY(ci) 1 182 183#endif 184 185/* 186 * Preempt the current process if in interrupt from user mode, 187 * or after the current trap/syscall if in system mode. 188 */ 189extern void cpu_need_resched(struct cpu_info *); 190 191#define aston(l) ((l)->l_md.md_astpending = 1) 192 193extern u_int32_t cpus_attached; 194 195#define curpcb curcpu()->ci_curpcb 196#define curlwp curcpu()->ci_curlwp 197 198/* 199 * Arguments to hardclock, softclock and statclock 200 * encapsulate the previous machine state in an opaque 201 * clockframe; for now, use generic intrframe. 202 */ 203struct clockframe { 204 struct intrframe cf_if; 205}; 206 207#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 208#define CLKF_BASEPRI(frame) (0) 209#define CLKF_PC(frame) ((frame)->cf_if.if_rip) 210#define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 211 212/* 213 * This is used during profiling to integrate system time. It can safely 214 * assume that the process is resident. 215 */ 216#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 217 218/* 219 * Give a profiling tick to the current process when the user profiling 220 * buffer pages are invalid. On the i386, request an ast to send us 221 * through trap(), marking the proc as needing a profiling tick. 222 */ 223extern void cpu_need_proftick(struct lwp *); 224 225/* 226 * Notify an LWP that it has a signal pending, process as soon as possible. 227 */ 228extern void cpu_signotify(struct lwp *); 229 230/* 231 * We need a machine-independent name for this. 232 */ 233extern void (*delay_func) __P((int)); 234 235#define DELAY(x) (*delay_func)(x) 236#define delay(x) (*delay_func)(x) 237 238 239/* 240 * pull in #defines for kinds of processors 241 */ 242 243extern int biosbasemem; 244extern int biosextmem; 245extern int cpu; 246extern int cpu_feature; 247extern int cpu_id; 248extern char cpu_vendor[]; 249extern int cpuid_level; 250 251/* identcpu.c */ 252 253void identifycpu __P((struct cpu_info *)); 254void cpu_probe_features __P((struct cpu_info *)); 255 256/* machdep.c */ 257void dumpconf __P((void)); 258int cpu_maxproc __P((void)); 259void cpu_reset __P((void)); 260void x86_64_proc0_tss_ldt_init __P((void)); 261void x86_64_init_pcb_tss_ldt __P((struct cpu_info *)); 262void cpu_proc_fork __P((struct proc *, struct proc *)); 263 264struct region_descriptor; 265void lgdt __P((struct region_descriptor *)); 266void fillw __P((short, void *, size_t)); 267 268struct pcb; 269void savectx __P((struct pcb *)); 270void switch_exit __P((struct lwp *, void (*)(struct lwp *))); 271void proc_trampoline __P((void)); 272void child_trampoline __P((void)); 273 274/* clock.c */ 275void initrtclock __P((u_long)); 276void startrtclock __P((void)); 277void i8254_delay __P((int)); 278void i8254_microtime __P((struct timeval *)); 279void i8254_initclocks __P((void)); 280 281void cpu_init_msrs __P((struct cpu_info *)); 282 283 284/* vm_machdep.c */ 285int kvtop __P((caddr_t)); 286 287/* trap.c */ 288void child_return __P((void *)); 289 290/* consinit.c */ 291void kgdb_port_init __P((void)); 292 293/* bus_machdep.c */ 294void x86_bus_space_init __P((void)); 295void x86_bus_space_mallocok __P((void)); 296 297/* powernow_k8.c */ 298void k8_powernow_init(void); 299 300#endif /* _KERNEL */ 301 302#include <machine/psl.h> 303 304/* 305 * CTL_MACHDEP definitions. 306 */ 307#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 308#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 309#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 310#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 311#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 312#define CPU_DISKINFO 6 /* disk geometry information */ 313#define CPU_FPU_PRESENT 7 /* FPU is present */ 314#define CPU_MAXID 8 /* number of valid machdep ids */ 315 316#define CTL_MACHDEP_NAMES { \ 317 { 0, 0 }, \ 318 { "console_device", CTLTYPE_STRUCT }, \ 319 { "biosbasemem", CTLTYPE_INT }, \ 320 { "biosextmem", CTLTYPE_INT }, \ 321 { "nkpde", CTLTYPE_INT }, \ 322 { "booted_kernel", CTLTYPE_STRING }, \ 323 { "diskinfo", CTLTYPE_STRUCT }, \ 324 { "fpu_present", CTLTYPE_INT }, \ 325} 326 327 328/* 329 * Structure for CPU_DISKINFO sysctl call. 330 * XXX this should be somewhere else. 331 */ 332#define MAX_BIOSDISKS 16 333 334struct disklist { 335 int dl_nbiosdisks; /* number of bios disks */ 336 struct biosdisk_info { 337 int bi_dev; /* BIOS device # (0x80 ..) */ 338 int bi_cyl; /* cylinders on disk */ 339 int bi_head; /* heads per track */ 340 int bi_sec; /* sectors per track */ 341 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 342#define BIFLAG_INVALID 0x01 343#define BIFLAG_EXTINT13 0x02 344 int bi_flags; 345 } dl_biosdisks[MAX_BIOSDISKS]; 346 347 int dl_nnativedisks; /* number of native disks */ 348 struct nativedisk_info { 349 char ni_devname[16]; /* native device name */ 350 int ni_nmatches; /* # of matches w/ BIOS */ 351 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 352 } dl_nativedisks[1]; /* actually longer */ 353}; 354 355#endif /* !_AMD64_CPU_H_ */ 356