cpu.h revision 1.34
1/* $NetBSD: cpu.h,v 1.34 2007/12/03 22:17:27 joerg 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#include "opt_xen.h" 45#endif 46 47/* 48 * Definitions unique to x86-64 cpu support. 49 */ 50#include <machine/frame.h> 51#include <machine/segments.h> 52#include <machine/tss.h> 53#include <machine/intrdefs.h> 54#include <x86/cacheinfo.h> 55 56#include <sys/device.h> 57#include <sys/simplelock.h> 58#include <sys/cpu_data.h> 59#include <sys/cc_microtime.h> 60 61struct pmap; 62 63struct cpu_info { 64 struct device *ci_dev; 65 struct cpu_info *ci_self; 66 67 /* 68 * Will be accessed by other CPUs. 69 */ 70 struct cpu_info *ci_next; 71 struct lwp *ci_curlwp; 72 struct pmap_cpu *ci_pmap_cpu; 73 struct lwp *ci_fpcurlwp; 74 int ci_fpsaving; 75 u_int ci_cpuid; 76 int ci_cpumask; /* (1 << CPU ID) */ 77 u_int ci_apicid; 78 struct cpu_data ci_data; /* MI per-cpu data */ 79 struct cc_microtime_state ci_cc;/* cc_microtime state */ 80 81 /* 82 * Private members. 83 */ 84 struct evcnt ci_tlb_evcnt; /* tlb shootdown counter */ 85 struct pmap *ci_pmap; /* current pmap */ 86 int ci_need_tlbwait; /* need to wait for TLB invalidations */ 87 int ci_want_pmapload; /* pmap_load() is needed */ 88 volatile int ci_tlbstate; /* one of TLBSTATE_ states. see below */ 89#define TLBSTATE_VALID 0 /* all user tlbs are valid */ 90#define TLBSTATE_LAZY 1 /* tlbs are valid but won't be kept uptodate */ 91#define TLBSTATE_STALE 2 /* we might have stale user tlbs */ 92 u_int64_t ci_scratch; 93#ifdef XEN 94 struct iplsource *ci_isources[NIPL]; 95#else 96 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 97#endif 98 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 99 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 100 101 /* The following must be aligned for cmpxchg8b. */ 102 struct { 103 uint32_t ipending; 104 int ilevel; 105 } ci_istate __aligned(8); 106#define ci_ipending ci_istate.ipending 107#define ci_ilevel ci_istate.ilevel 108 109 int ci_idepth; 110 u_int32_t ci_imask[NIPL]; 111 u_int32_t ci_iunmask[NIPL]; 112 113 paddr_t ci_idle_pcb_paddr; 114 u_int ci_flags; 115 u_int32_t ci_ipis; 116 117 int32_t ci_cpuid_level; 118 uint32_t ci_signature; 119 uint32_t ci_feature_flags; 120 uint32_t ci_feature2_flags; 121 uint32_t ci_vendor[4]; /* vendor string */ 122 u_int64_t ci_tsc_freq; 123 volatile uint32_t ci_lapic_counter; 124 125 const struct cpu_functions *ci_func; 126 void (*cpu_setup)(struct cpu_info *); 127 void (*ci_info)(struct cpu_info *); 128 129 int ci_want_resched; 130 struct trapframe *ci_ddb_regs; 131 132 struct x86_cache_info ci_cinfo[CAI_COUNT]; 133 134 char *ci_gdt; 135 136 struct x86_64_tss ci_doubleflt_tss; 137 struct x86_64_tss ci_ddbipi_tss; 138 139 char *ci_doubleflt_stack; 140 char *ci_ddbipi_stack; 141 142 struct evcnt ci_ipi_events[X86_NIPI]; 143}; 144 145#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 146#define CPUF_AP 0x0002 /* CPU is an AP */ 147#define CPUF_SP 0x0004 /* CPU is only processor */ 148#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 149 150#define CPUF_PRESENT 0x1000 /* CPU is present */ 151#define CPUF_RUNNING 0x2000 /* CPU is running */ 152#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 153#define CPUF_GO 0x8000 /* CPU should start running */ 154 155 156extern struct cpu_info cpu_info_primary; 157extern struct cpu_info *cpu_info_list; 158 159#define CPU_INFO_ITERATOR int 160#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 161 ci != NULL; ci = ci->ci_next 162 163#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 164 165#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 166#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 167#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 168 169#if defined(__GNUC__) && defined(_KERNEL) 170static struct cpu_info *x86_curcpu(void); 171static lwp_t *x86_curlwp(void); 172 173__inline static struct cpu_info * __attribute__((__unused__)) 174x86_curcpu(void) 175{ 176 struct cpu_info *ci; 177 178 __asm volatile("movq %%gs:%1, %0" : 179 "=r" (ci) : 180 "m" 181 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 182 return ci; 183} 184 185__inline static lwp_t * __attribute__((__unused__)) 186x86_curlwp(void) 187{ 188 lwp_t *l; 189 190 __asm volatile("movq %%gs:%1, %0" : 191 "=r" (l) : 192 "m" 193 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 194 return l; 195} 196#else /* __GNUC__ && _KERNEL */ 197/* For non-GCC and LKMs */ 198struct cpu_info *x86_curcpu(void); 199lwp_t *x86_curlwp(void); 200#endif /* __GNUC__ && _KERNEL */ 201 202#define cpu_number() (curcpu()->ci_cpuid) 203 204#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 205 206extern struct cpu_info *cpu_info[X86_MAXPROCS]; 207 208void cpu_boot_secondary_processors(void); 209void cpu_init_idle_lwps(void); 210 211#define aston(l) ((l)->l_md.md_astpending = 1) 212 213extern u_int32_t cpus_attached; 214 215#define curcpu() x86_curcpu() 216#define curlwp x86_curlwp() 217#define curpcb (&curlwp->l_addr->u_pcb) 218 219/* 220 * Arguments to hardclock, softclock and statclock 221 * encapsulate the previous machine state in an opaque 222 * clockframe; for now, use generic intrframe. 223 */ 224struct clockframe { 225 struct intrframe cf_if; 226}; 227 228#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 229#define CLKF_PC(frame) ((frame)->cf_if.if_rip) 230#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 231 232/* 233 * This is used during profiling to integrate system time. It can safely 234 * assume that the process is resident. 235 */ 236#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 237 238/* 239 * Give a profiling tick to the current process when the user profiling 240 * buffer pages are invalid. On the i386, request an ast to send us 241 * through trap(), marking the proc as needing a profiling tick. 242 */ 243extern void cpu_need_proftick(struct lwp *); 244 245/* 246 * Notify an LWP that it has a signal pending, process as soon as possible. 247 */ 248extern void cpu_signotify(struct lwp *); 249 250/* 251 * We need a machine-independent name for this. 252 */ 253extern void (*delay_func)(unsigned int); 254 255#define DELAY(x) (*delay_func)(x) 256#define delay(x) (*delay_func)(x) 257 258 259/* 260 * pull in #defines for kinds of processors 261 */ 262 263extern int biosbasemem; 264extern int biosextmem; 265extern int cpu; 266extern int cpu_feature; 267extern int cpu_feature2; 268extern int cpu_id; 269extern int cpuid_level; 270extern char cpu_vendorname[]; 271 272/* identcpu.c */ 273 274void identifycpu(struct cpu_info *); 275void cpu_probe_features(struct cpu_info *); 276 277/* machdep.c */ 278void dumpconf(void); 279int cpu_maxproc(void); 280void cpu_reset(void); 281void x86_64_proc0_tss_ldt_init(void); 282void x86_64_init_pcb_tss_ldt(struct cpu_info *); 283void cpu_proc_fork(struct proc *, struct proc *); 284 285struct region_descriptor; 286void lgdt(struct region_descriptor *); 287#ifdef XEN 288void lgdt_finish(void); 289#endif 290void fillw(short, void *, size_t); 291 292struct pcb; 293void savectx(struct pcb *); 294void lwp_trampoline(void); 295void child_trampoline(void); 296 297#ifdef XEN 298void startrtclock(void); 299void xen_delay(unsigned int); 300void xen_initclocks(void); 301#else 302/* clock.c */ 303void initrtclock(u_long); 304void startrtclock(void); 305void i8254_delay(unsigned int); 306void i8254_microtime(struct timeval *); 307void i8254_initclocks(void); 308#endif 309 310void cpu_init_msrs(struct cpu_info *); 311 312 313/* vm_machdep.c */ 314int kvtop(void *); 315 316/* trap.c */ 317void child_return(void *); 318 319/* consinit.c */ 320void kgdb_port_init(void); 321 322/* bus_machdep.c */ 323void x86_bus_space_init(void); 324void x86_bus_space_mallocok(void); 325 326#endif /* _KERNEL */ 327 328#include <machine/psl.h> 329 330/* 331 * CTL_MACHDEP definitions. 332 */ 333#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 334#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 335#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 336#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 337#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 338#define CPU_DISKINFO 6 /* disk geometry information */ 339#define CPU_FPU_PRESENT 7 /* FPU is present */ 340#define CPU_MAXID 8 /* number of valid machdep ids */ 341 342#define CTL_MACHDEP_NAMES { \ 343 { 0, 0 }, \ 344 { "console_device", CTLTYPE_STRUCT }, \ 345 { "biosbasemem", CTLTYPE_INT }, \ 346 { "biosextmem", CTLTYPE_INT }, \ 347 { "nkpde", CTLTYPE_INT }, \ 348 { "booted_kernel", CTLTYPE_STRING }, \ 349 { "diskinfo", CTLTYPE_STRUCT }, \ 350 { "fpu_present", CTLTYPE_INT }, \ 351} 352 353 354/* 355 * Structure for CPU_DISKINFO sysctl call. 356 * XXX this should be somewhere else. 357 */ 358#define MAX_BIOSDISKS 16 359 360struct disklist { 361 int dl_nbiosdisks; /* number of bios disks */ 362 struct biosdisk_info { 363 int bi_dev; /* BIOS device # (0x80 ..) */ 364 int bi_cyl; /* cylinders on disk */ 365 int bi_head; /* heads per track */ 366 int bi_sec; /* sectors per track */ 367 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 368#define BIFLAG_INVALID 0x01 369#define BIFLAG_EXTINT13 0x02 370 int bi_flags; 371 } dl_biosdisks[MAX_BIOSDISKS]; 372 373 int dl_nnativedisks; /* number of native disks */ 374 struct nativedisk_info { 375 char ni_devname[16]; /* native device name */ 376 int ni_nmatches; /* # of matches w/ BIOS */ 377 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 378 } dl_nativedisks[1]; /* actually longer */ 379}; 380 381#endif /* !_AMD64_CPU_H_ */ 382