cpu.h revision 1.20
1/* $NetBSD: cpu.h,v 1.20 2007/03/20 21:07:40 xtraeme 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 uint64_t ci_msr_rvalue; /* per-cpu msr returned value */ 110 111 const struct cpu_functions *ci_func; 112 void (*cpu_setup)(struct cpu_info *); 113 void (*ci_info)(struct cpu_info *); 114 115 int ci_want_resched; 116 int ci_astpending; 117 struct trapframe *ci_ddb_regs; 118 119 struct x86_cache_info ci_cinfo[CAI_COUNT]; 120 121 char *ci_gdt; 122 123 struct x86_64_tss ci_doubleflt_tss; 124 struct x86_64_tss ci_ddbipi_tss; 125 126 char *ci_doubleflt_stack; 127 char *ci_ddbipi_stack; 128 129 struct evcnt ci_ipi_events[X86_NIPI]; 130}; 131 132#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 133#define CPUF_AP 0x0002 /* CPU is an AP */ 134#define CPUF_SP 0x0004 /* CPU is only processor */ 135#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 136 137#define CPUF_PRESENT 0x1000 /* CPU is present */ 138#define CPUF_RUNNING 0x2000 /* CPU is running */ 139#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 140#define CPUF_GO 0x8000 /* CPU should start running */ 141 142 143extern struct cpu_info cpu_info_primary; 144extern struct cpu_info *cpu_info_list; 145 146#define CPU_INFO_ITERATOR int 147#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 148 ci != NULL; ci = ci->ci_next 149 150#if defined(MULTIPROCESSOR) 151 152#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 153 154#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 155#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 156#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 157 158#define curcpu() ({struct cpu_info *__ci; \ 159 __asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 160 __ci;}) 161#define cpu_number() (curcpu()->ci_cpuid) 162 163#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 164 165extern struct cpu_info *cpu_info[X86_MAXPROCS]; 166 167void cpu_boot_secondary_processors(void); 168void cpu_init_idle_pcbs(void); 169 170 171#else /* !MULTIPROCESSOR */ 172 173#define X86_MAXPROCS 1 174 175extern struct cpu_info cpu_info_primary; 176 177#define curcpu() (&cpu_info_primary) 178 179/* 180 * definitions of cpu-dependent requirements 181 * referenced in generic code 182 */ 183#define cpu_number() 0 184#define CPU_IS_PRIMARY(ci) 1 185 186#endif 187 188/* 189 * Preempt the current process if in interrupt from user mode, 190 * or after the current trap/syscall if in system mode. 191 */ 192extern void cpu_need_resched(struct cpu_info *); 193 194#define aston(l) ((l)->l_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 */ 206struct clockframe { 207 struct intrframe cf_if; 208}; 209 210#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 211#define CLKF_PC(frame) ((frame)->cf_if.if_rip) 212#define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 213 214/* 215 * This is used during profiling to integrate system time. It can safely 216 * assume that the process is resident. 217 */ 218#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 219 220/* 221 * Give a profiling tick to the current process when the user profiling 222 * buffer pages are invalid. On the i386, request an ast to send us 223 * through trap(), marking the proc as needing a profiling tick. 224 */ 225extern void cpu_need_proftick(struct lwp *); 226 227/* 228 * Notify an LWP that it has a signal pending, process as soon as possible. 229 */ 230extern void cpu_signotify(struct lwp *); 231 232/* 233 * We need a machine-independent name for this. 234 */ 235extern void (*delay_func)(int); 236 237#define DELAY(x) (*delay_func)(x) 238#define delay(x) (*delay_func)(x) 239 240 241/* 242 * pull in #defines for kinds of processors 243 */ 244 245extern int biosbasemem; 246extern int biosextmem; 247extern int cpu; 248extern int cpu_feature; 249extern int cpu_id; 250extern char cpu_vendor[]; 251extern int cpuid_level; 252 253/* identcpu.c */ 254 255void identifycpu(struct cpu_info *); 256void cpu_probe_features(struct cpu_info *); 257 258/* machdep.c */ 259void dumpconf(void); 260int cpu_maxproc(void); 261void cpu_reset(void); 262void x86_64_proc0_tss_ldt_init(void); 263void x86_64_init_pcb_tss_ldt(struct cpu_info *); 264void cpu_proc_fork(struct proc *, struct proc *); 265 266struct region_descriptor; 267void lgdt(struct region_descriptor *); 268void fillw(short, void *, size_t); 269 270struct pcb; 271void savectx(struct pcb *); 272void switch_exit(struct lwp *, void (*)(struct lwp *)); 273void proc_trampoline(void); 274void child_trampoline(void); 275 276/* clock.c */ 277void initrtclock(u_long); 278void startrtclock(void); 279void i8254_delay(int); 280void i8254_microtime(struct timeval *); 281void i8254_initclocks(void); 282 283void cpu_init_msrs(struct cpu_info *); 284 285 286/* vm_machdep.c */ 287int kvtop(void *); 288 289/* trap.c */ 290void child_return(void *); 291 292/* consinit.c */ 293void kgdb_port_init(void); 294 295/* bus_machdep.c */ 296void x86_bus_space_init(void); 297void x86_bus_space_mallocok(void); 298 299#endif /* _KERNEL */ 300 301#include <machine/psl.h> 302 303/* 304 * CTL_MACHDEP definitions. 305 */ 306#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 307#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 308#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 309#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 310#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 311#define CPU_DISKINFO 6 /* disk geometry information */ 312#define CPU_FPU_PRESENT 7 /* FPU is present */ 313#define CPU_MAXID 8 /* number of valid machdep ids */ 314 315#define CTL_MACHDEP_NAMES { \ 316 { 0, 0 }, \ 317 { "console_device", CTLTYPE_STRUCT }, \ 318 { "biosbasemem", CTLTYPE_INT }, \ 319 { "biosextmem", CTLTYPE_INT }, \ 320 { "nkpde", CTLTYPE_INT }, \ 321 { "booted_kernel", CTLTYPE_STRING }, \ 322 { "diskinfo", CTLTYPE_STRUCT }, \ 323 { "fpu_present", CTLTYPE_INT }, \ 324} 325 326 327/* 328 * Structure for CPU_DISKINFO sysctl call. 329 * XXX this should be somewhere else. 330 */ 331#define MAX_BIOSDISKS 16 332 333struct disklist { 334 int dl_nbiosdisks; /* number of bios disks */ 335 struct biosdisk_info { 336 int bi_dev; /* BIOS device # (0x80 ..) */ 337 int bi_cyl; /* cylinders on disk */ 338 int bi_head; /* heads per track */ 339 int bi_sec; /* sectors per track */ 340 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 341#define BIFLAG_INVALID 0x01 342#define BIFLAG_EXTINT13 0x02 343 int bi_flags; 344 } dl_biosdisks[MAX_BIOSDISKS]; 345 346 int dl_nnativedisks; /* number of native disks */ 347 struct nativedisk_info { 348 char ni_devname[16]; /* native device name */ 349 int ni_nmatches; /* # of matches w/ BIOS */ 350 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 351 } dl_nativedisks[1]; /* actually longer */ 352}; 353 354#endif /* !_AMD64_CPU_H_ */ 355