cpu.h revision 1.22
1/* $NetBSD: cpu.h,v 1.22 2007/05/11 14:01:46 fvdl 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/simplelock.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 uint32_t ci_feature2_flags; 106 u_int32_t ci_signature; 107 u_int64_t ci_tsc_freq; 108 109 const struct cpu_functions *ci_func; 110 void (*cpu_setup)(struct cpu_info *); 111 void (*ci_info)(struct cpu_info *); 112 113 int ci_want_resched; 114 int ci_astpending; 115 struct trapframe *ci_ddb_regs; 116 117 struct x86_cache_info ci_cinfo[CAI_COUNT]; 118 119 char *ci_gdt; 120 121 struct x86_64_tss ci_doubleflt_tss; 122 struct x86_64_tss ci_ddbipi_tss; 123 124 char *ci_doubleflt_stack; 125 char *ci_ddbipi_stack; 126 127 struct evcnt ci_ipi_events[X86_NIPI]; 128}; 129 130#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 131#define CPUF_AP 0x0002 /* CPU is an AP */ 132#define CPUF_SP 0x0004 /* CPU is only processor */ 133#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 134 135#define CPUF_PRESENT 0x1000 /* CPU is present */ 136#define CPUF_RUNNING 0x2000 /* CPU is running */ 137#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 138#define CPUF_GO 0x8000 /* CPU should start running */ 139 140 141extern struct cpu_info cpu_info_primary; 142extern struct cpu_info *cpu_info_list; 143 144#define CPU_INFO_ITERATOR int 145#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 146 ci != NULL; ci = ci->ci_next 147 148#if defined(MULTIPROCESSOR) 149 150#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 151 152#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 153#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 154#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 155 156#define curcpu() ({struct cpu_info *__ci; \ 157 __asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 158 __ci;}) 159#define cpu_number() (curcpu()->ci_cpuid) 160 161#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 162 163extern struct cpu_info *cpu_info[X86_MAXPROCS]; 164 165void cpu_boot_secondary_processors(void); 166void cpu_init_idle_pcbs(void); 167 168 169#else /* !MULTIPROCESSOR */ 170 171#define X86_MAXPROCS 1 172 173extern struct cpu_info cpu_info_primary; 174 175#define curcpu() (&cpu_info_primary) 176 177/* 178 * definitions of cpu-dependent requirements 179 * referenced in generic code 180 */ 181#define cpu_number() 0 182#define CPU_IS_PRIMARY(ci) 1 183 184#endif 185 186/* 187 * Preempt the current process if in interrupt from user mode, 188 * or after the current trap/syscall if in system mode. 189 */ 190extern void cpu_need_resched(struct cpu_info *); 191 192#define aston(l) ((l)->l_md.md_astpending = 1) 193 194extern u_int32_t cpus_attached; 195 196#define curpcb curcpu()->ci_curpcb 197#define curlwp curcpu()->ci_curlwp 198 199/* 200 * Arguments to hardclock, softclock and statclock 201 * encapsulate the previous machine state in an opaque 202 * clockframe; for now, use generic intrframe. 203 */ 204struct clockframe { 205 struct intrframe cf_if; 206}; 207 208#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 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)(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(struct cpu_info *); 254void cpu_probe_features(struct cpu_info *); 255 256/* machdep.c */ 257void dumpconf(void); 258int cpu_maxproc(void); 259void cpu_reset(void); 260void x86_64_proc0_tss_ldt_init(void); 261void x86_64_init_pcb_tss_ldt(struct cpu_info *); 262void cpu_proc_fork(struct proc *, struct proc *); 263void load_fsgs32(uint16_t, uint16_t); 264 265struct region_descriptor; 266void lgdt(struct region_descriptor *); 267void fillw(short, void *, size_t); 268 269struct pcb; 270void savectx(struct pcb *); 271void switch_exit(struct lwp *, void (*)(struct lwp *)); 272void proc_trampoline(void); 273void child_trampoline(void); 274 275/* clock.c */ 276void initrtclock(u_long); 277void startrtclock(void); 278void i8254_delay(int); 279void i8254_microtime(struct timeval *); 280void i8254_initclocks(void); 281 282void cpu_init_msrs(struct cpu_info *); 283 284 285/* vm_machdep.c */ 286int kvtop(void *); 287 288/* trap.c */ 289void child_return(void *); 290 291/* consinit.c */ 292void kgdb_port_init(void); 293 294/* bus_machdep.c */ 295void x86_bus_space_init(void); 296void x86_bus_space_mallocok(void); 297 298#endif /* _KERNEL */ 299 300#include <machine/psl.h> 301 302/* 303 * CTL_MACHDEP definitions. 304 */ 305#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 306#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 307#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 308#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 309#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 310#define CPU_DISKINFO 6 /* disk geometry information */ 311#define CPU_FPU_PRESENT 7 /* FPU is present */ 312#define CPU_MAXID 8 /* number of valid machdep ids */ 313 314#define CTL_MACHDEP_NAMES { \ 315 { 0, 0 }, \ 316 { "console_device", CTLTYPE_STRUCT }, \ 317 { "biosbasemem", CTLTYPE_INT }, \ 318 { "biosextmem", CTLTYPE_INT }, \ 319 { "nkpde", CTLTYPE_INT }, \ 320 { "booted_kernel", CTLTYPE_STRING }, \ 321 { "diskinfo", CTLTYPE_STRUCT }, \ 322 { "fpu_present", CTLTYPE_INT }, \ 323} 324 325 326/* 327 * Structure for CPU_DISKINFO sysctl call. 328 * XXX this should be somewhere else. 329 */ 330#define MAX_BIOSDISKS 16 331 332struct disklist { 333 int dl_nbiosdisks; /* number of bios disks */ 334 struct biosdisk_info { 335 int bi_dev; /* BIOS device # (0x80 ..) */ 336 int bi_cyl; /* cylinders on disk */ 337 int bi_head; /* heads per track */ 338 int bi_sec; /* sectors per track */ 339 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 340#define BIFLAG_INVALID 0x01 341#define BIFLAG_EXTINT13 0x02 342 int bi_flags; 343 } dl_biosdisks[MAX_BIOSDISKS]; 344 345 int dl_nnativedisks; /* number of native disks */ 346 struct nativedisk_info { 347 char ni_devname[16]; /* native device name */ 348 int ni_nmatches; /* # of matches w/ BIOS */ 349 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 350 } dl_nativedisks[1]; /* actually longer */ 351}; 352 353#endif /* !_AMD64_CPU_H_ */ 354