cpu.h revision 1.33
1/* $NetBSD: cpu.h,v 1.33 2007/11/22 16:16:45 bouyer 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; 123 124 const struct cpu_functions *ci_func; 125 void (*cpu_setup)(struct cpu_info *); 126 void (*ci_info)(struct cpu_info *); 127 128 int ci_want_resched; 129 struct trapframe *ci_ddb_regs; 130 131 struct x86_cache_info ci_cinfo[CAI_COUNT]; 132 133 char *ci_gdt; 134 135 struct x86_64_tss ci_doubleflt_tss; 136 struct x86_64_tss ci_ddbipi_tss; 137 138 char *ci_doubleflt_stack; 139 char *ci_ddbipi_stack; 140 141 struct evcnt ci_ipi_events[X86_NIPI]; 142}; 143 144#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 145#define CPUF_AP 0x0002 /* CPU is an AP */ 146#define CPUF_SP 0x0004 /* CPU is only processor */ 147#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 148 149#define CPUF_PRESENT 0x1000 /* CPU is present */ 150#define CPUF_RUNNING 0x2000 /* CPU is running */ 151#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 152#define CPUF_GO 0x8000 /* CPU should start running */ 153 154 155extern struct cpu_info cpu_info_primary; 156extern struct cpu_info *cpu_info_list; 157 158#define CPU_INFO_ITERATOR int 159#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 160 ci != NULL; ci = ci->ci_next 161 162#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 163 164#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 165#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 166#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 167 168#if defined(__GNUC__) && defined(_KERNEL) 169static struct cpu_info *x86_curcpu(void); 170static lwp_t *x86_curlwp(void); 171 172__inline static struct cpu_info * __attribute__((__unused__)) 173x86_curcpu(void) 174{ 175 struct cpu_info *ci; 176 177 __asm volatile("movq %%gs:%1, %0" : 178 "=r" (ci) : 179 "m" 180 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 181 return ci; 182} 183 184__inline static lwp_t * __attribute__((__unused__)) 185x86_curlwp(void) 186{ 187 lwp_t *l; 188 189 __asm volatile("movq %%gs:%1, %0" : 190 "=r" (l) : 191 "m" 192 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 193 return l; 194} 195#else /* __GNUC__ && _KERNEL */ 196/* For non-GCC and LKMs */ 197struct cpu_info *x86_curcpu(void); 198lwp_t *x86_curlwp(void); 199#endif /* __GNUC__ && _KERNEL */ 200 201#define cpu_number() (curcpu()->ci_cpuid) 202 203#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 204 205extern struct cpu_info *cpu_info[X86_MAXPROCS]; 206 207void cpu_boot_secondary_processors(void); 208void cpu_init_idle_lwps(void); 209 210#define aston(l) ((l)->l_md.md_astpending = 1) 211 212extern u_int32_t cpus_attached; 213 214#define curcpu() x86_curcpu() 215#define curlwp x86_curlwp() 216#define curpcb (&curlwp->l_addr->u_pcb) 217 218/* 219 * Arguments to hardclock, softclock and statclock 220 * encapsulate the previous machine state in an opaque 221 * clockframe; for now, use generic intrframe. 222 */ 223struct clockframe { 224 struct intrframe cf_if; 225}; 226 227#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 228#define CLKF_PC(frame) ((frame)->cf_if.if_rip) 229#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 230 231/* 232 * This is used during profiling to integrate system time. It can safely 233 * assume that the process is resident. 234 */ 235#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 236 237/* 238 * Give a profiling tick to the current process when the user profiling 239 * buffer pages are invalid. On the i386, request an ast to send us 240 * through trap(), marking the proc as needing a profiling tick. 241 */ 242extern void cpu_need_proftick(struct lwp *); 243 244/* 245 * Notify an LWP that it has a signal pending, process as soon as possible. 246 */ 247extern void cpu_signotify(struct lwp *); 248 249/* 250 * We need a machine-independent name for this. 251 */ 252extern void (*delay_func)(unsigned int); 253 254#define DELAY(x) (*delay_func)(x) 255#define delay(x) (*delay_func)(x) 256 257 258/* 259 * pull in #defines for kinds of processors 260 */ 261 262extern int biosbasemem; 263extern int biosextmem; 264extern int cpu; 265extern int cpu_feature; 266extern int cpu_feature2; 267extern int cpu_id; 268extern int cpuid_level; 269extern char cpu_vendorname[]; 270 271/* identcpu.c */ 272 273void identifycpu(struct cpu_info *); 274void cpu_probe_features(struct cpu_info *); 275 276/* machdep.c */ 277void dumpconf(void); 278int cpu_maxproc(void); 279void cpu_reset(void); 280void x86_64_proc0_tss_ldt_init(void); 281void x86_64_init_pcb_tss_ldt(struct cpu_info *); 282void cpu_proc_fork(struct proc *, struct proc *); 283 284struct region_descriptor; 285void lgdt(struct region_descriptor *); 286#ifdef XEN 287void lgdt_finish(void); 288#endif 289void fillw(short, void *, size_t); 290 291struct pcb; 292void savectx(struct pcb *); 293void lwp_trampoline(void); 294void child_trampoline(void); 295 296#ifdef XEN 297void startrtclock(void); 298void xen_delay(unsigned int); 299void xen_initclocks(void); 300#else 301/* clock.c */ 302void initrtclock(u_long); 303void startrtclock(void); 304void i8254_delay(unsigned int); 305void i8254_microtime(struct timeval *); 306void i8254_initclocks(void); 307#endif 308 309void cpu_init_msrs(struct cpu_info *); 310 311 312/* vm_machdep.c */ 313int kvtop(void *); 314 315/* trap.c */ 316void child_return(void *); 317 318/* consinit.c */ 319void kgdb_port_init(void); 320 321/* bus_machdep.c */ 322void x86_bus_space_init(void); 323void x86_bus_space_mallocok(void); 324 325#endif /* _KERNEL */ 326 327#include <machine/psl.h> 328 329/* 330 * CTL_MACHDEP definitions. 331 */ 332#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 333#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 334#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 335#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 336#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 337#define CPU_DISKINFO 6 /* disk geometry information */ 338#define CPU_FPU_PRESENT 7 /* FPU is present */ 339#define CPU_MAXID 8 /* number of valid machdep ids */ 340 341#define CTL_MACHDEP_NAMES { \ 342 { 0, 0 }, \ 343 { "console_device", CTLTYPE_STRUCT }, \ 344 { "biosbasemem", CTLTYPE_INT }, \ 345 { "biosextmem", CTLTYPE_INT }, \ 346 { "nkpde", CTLTYPE_INT }, \ 347 { "booted_kernel", CTLTYPE_STRING }, \ 348 { "diskinfo", CTLTYPE_STRUCT }, \ 349 { "fpu_present", CTLTYPE_INT }, \ 350} 351 352 353/* 354 * Structure for CPU_DISKINFO sysctl call. 355 * XXX this should be somewhere else. 356 */ 357#define MAX_BIOSDISKS 16 358 359struct disklist { 360 int dl_nbiosdisks; /* number of bios disks */ 361 struct biosdisk_info { 362 int bi_dev; /* BIOS device # (0x80 ..) */ 363 int bi_cyl; /* cylinders on disk */ 364 int bi_head; /* heads per track */ 365 int bi_sec; /* sectors per track */ 366 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 367#define BIFLAG_INVALID 0x01 368#define BIFLAG_EXTINT13 0x02 369 int bi_flags; 370 } dl_biosdisks[MAX_BIOSDISKS]; 371 372 int dl_nnativedisks; /* number of native disks */ 373 struct nativedisk_info { 374 char ni_devname[16]; /* native device name */ 375 int ni_nmatches; /* # of matches w/ BIOS */ 376 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 377 } dl_nativedisks[1]; /* actually longer */ 378}; 379 380#endif /* !_AMD64_CPU_H_ */ 381