cpu.h revision 1.31
1/* $NetBSD: cpu.h,v 1.31 2007/10/29 01:35:37 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/simplelock.h> 57#include <sys/cpu_data.h> 58#include <sys/cc_microtime.h> 59 60struct pmap; 61 62struct cpu_info { 63 struct device *ci_dev; 64 struct cpu_info *ci_self; 65 66 /* 67 * Will be accessed by other CPUs. 68 */ 69 struct cpu_info *ci_next; 70 struct lwp *ci_curlwp; 71 struct pmap_cpu *ci_pmap_cpu; 72 struct lwp *ci_fpcurlwp; 73 int ci_fpsaving; 74 u_int ci_cpuid; 75 int ci_cpumask; /* (1 << CPU ID) */ 76 u_int ci_apicid; 77 struct cpu_data ci_data; /* MI per-cpu data */ 78 struct cc_microtime_state ci_cc;/* cc_microtime state */ 79 80 /* 81 * Private members. 82 */ 83 struct evcnt ci_tlb_evcnt; /* tlb shootdown counter */ 84 struct pmap *ci_pmap; /* current pmap */ 85 int ci_need_tlbwait; /* need to wait for TLB invalidations */ 86 int ci_want_pmapload; /* pmap_load() is needed */ 87 volatile int ci_tlbstate; /* one of TLBSTATE_ states. see below */ 88#define TLBSTATE_VALID 0 /* all user tlbs are valid */ 89#define TLBSTATE_LAZY 1 /* tlbs are valid but won't be kept uptodate */ 90#define TLBSTATE_STALE 2 /* we might have stale user tlbs */ 91 u_int64_t ci_scratch; 92 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 93 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 94 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 95 96 /* The following must be aligned for cmpxchg8b. */ 97 struct { 98 uint32_t ipending; 99 int ilevel; 100 } ci_istate __aligned(8); 101#define ci_ipending ci_istate.ipending 102#define ci_ilevel ci_istate.ilevel 103 104 int ci_idepth; 105 u_int32_t ci_imask[NIPL]; 106 u_int32_t ci_iunmask[NIPL]; 107 108 paddr_t ci_idle_pcb_paddr; 109 u_int ci_flags; 110 u_int32_t ci_ipis; 111 112 int32_t ci_cpuid_level; 113 uint32_t ci_signature; 114 uint32_t ci_feature_flags; 115 uint32_t ci_feature2_flags; 116 uint32_t ci_vendor[4]; /* vendor string */ 117 u_int64_t ci_tsc_freq; 118 119 const struct cpu_functions *ci_func; 120 void (*cpu_setup)(struct cpu_info *); 121 void (*ci_info)(struct cpu_info *); 122 123 int ci_want_resched; 124 struct trapframe *ci_ddb_regs; 125 126 struct x86_cache_info ci_cinfo[CAI_COUNT]; 127 128 char *ci_gdt; 129 130 struct x86_64_tss ci_doubleflt_tss; 131 struct x86_64_tss ci_ddbipi_tss; 132 133 char *ci_doubleflt_stack; 134 char *ci_ddbipi_stack; 135 136 struct evcnt ci_ipi_events[X86_NIPI]; 137}; 138 139#define CPUF_BSP 0x0001 /* CPU is the original BSP */ 140#define CPUF_AP 0x0002 /* CPU is an AP */ 141#define CPUF_SP 0x0004 /* CPU is only processor */ 142#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 143 144#define CPUF_PRESENT 0x1000 /* CPU is present */ 145#define CPUF_RUNNING 0x2000 /* CPU is running */ 146#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 147#define CPUF_GO 0x8000 /* CPU should start running */ 148 149 150extern struct cpu_info cpu_info_primary; 151extern struct cpu_info *cpu_info_list; 152 153#define CPU_INFO_ITERATOR int 154#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 155 ci != NULL; ci = ci->ci_next 156 157#define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 158 159#define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 160#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 161#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 162 163#if defined(__GNUC__) && defined(_KERNEL) 164static struct cpu_info *x86_curcpu(void); 165static lwp_t *x86_curlwp(void); 166 167__inline static struct cpu_info * __attribute__((__unused__)) 168x86_curcpu(void) 169{ 170 struct cpu_info *ci; 171 172 __asm volatile("movq %%gs:%1, %0" : 173 "=r" (ci) : 174 "m" 175 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 176 return ci; 177} 178 179__inline static lwp_t * __attribute__((__unused__)) 180x86_curlwp(void) 181{ 182 lwp_t *l; 183 184 __asm volatile("movq %%gs:%1, %0" : 185 "=r" (l) : 186 "m" 187 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 188 return l; 189} 190#else /* __GNUC__ && _KERNEL */ 191/* For non-GCC and LKMs */ 192struct cpu_info *x86_curcpu(void); 193lwp_t *x86_curlwp(void); 194#endif /* __GNUC__ && _KERNEL */ 195 196#define cpu_number() (curcpu()->ci_cpuid) 197 198#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 199 200extern struct cpu_info *cpu_info[X86_MAXPROCS]; 201 202void cpu_boot_secondary_processors(void); 203void cpu_init_idle_lwps(void); 204 205#define aston(l) ((l)->l_md.md_astpending = 1) 206 207extern u_int32_t cpus_attached; 208 209#define curcpu() x86_curcpu() 210#define curlwp x86_curlwp() 211#define curpcb (&curlwp->l_addr->u_pcb) 212 213/* 214 * Arguments to hardclock, softclock and statclock 215 * encapsulate the previous machine state in an opaque 216 * clockframe; for now, use generic intrframe. 217 */ 218struct clockframe { 219 struct intrframe cf_if; 220}; 221 222#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_rflags) 223#define CLKF_PC(frame) ((frame)->cf_if.if_rip) 224#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 225 226/* 227 * This is used during profiling to integrate system time. It can safely 228 * assume that the process is resident. 229 */ 230#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 231 232/* 233 * Give a profiling tick to the current process when the user profiling 234 * buffer pages are invalid. On the i386, request an ast to send us 235 * through trap(), marking the proc as needing a profiling tick. 236 */ 237extern void cpu_need_proftick(struct lwp *); 238 239/* 240 * Notify an LWP that it has a signal pending, process as soon as possible. 241 */ 242extern void cpu_signotify(struct lwp *); 243 244/* 245 * We need a machine-independent name for this. 246 */ 247extern void (*delay_func)(unsigned int); 248 249#define DELAY(x) (*delay_func)(x) 250#define delay(x) (*delay_func)(x) 251 252 253/* 254 * pull in #defines for kinds of processors 255 */ 256 257extern int biosbasemem; 258extern int biosextmem; 259extern int cpu; 260extern int cpu_feature; 261extern int cpu_feature2; 262extern int cpu_id; 263extern char cpu_vendor[]; 264extern int cpuid_level; 265 266/* identcpu.c */ 267 268void identifycpu(struct cpu_info *); 269void cpu_probe_features(struct cpu_info *); 270 271/* machdep.c */ 272void dumpconf(void); 273int cpu_maxproc(void); 274void cpu_reset(void); 275void x86_64_proc0_tss_ldt_init(void); 276void x86_64_init_pcb_tss_ldt(struct cpu_info *); 277void cpu_proc_fork(struct proc *, struct proc *); 278 279struct region_descriptor; 280void lgdt(struct region_descriptor *); 281void fillw(short, void *, size_t); 282 283struct pcb; 284void savectx(struct pcb *); 285void lwp_trampoline(void); 286void child_trampoline(void); 287 288/* clock.c */ 289void initrtclock(u_long); 290void startrtclock(void); 291void i8254_delay(unsigned int); 292void i8254_microtime(struct timeval *); 293void i8254_initclocks(void); 294 295void cpu_init_msrs(struct cpu_info *); 296 297 298/* vm_machdep.c */ 299int kvtop(void *); 300 301/* trap.c */ 302void child_return(void *); 303 304/* consinit.c */ 305void kgdb_port_init(void); 306 307/* bus_machdep.c */ 308void x86_bus_space_init(void); 309void x86_bus_space_mallocok(void); 310 311#endif /* _KERNEL */ 312 313#include <machine/psl.h> 314 315/* 316 * CTL_MACHDEP definitions. 317 */ 318#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 319#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 320#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 321#define CPU_NKPDE 4 /* int: number of kernel PDEs */ 322#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 323#define CPU_DISKINFO 6 /* disk geometry information */ 324#define CPU_FPU_PRESENT 7 /* FPU is present */ 325#define CPU_MAXID 8 /* number of valid machdep ids */ 326 327#define CTL_MACHDEP_NAMES { \ 328 { 0, 0 }, \ 329 { "console_device", CTLTYPE_STRUCT }, \ 330 { "biosbasemem", CTLTYPE_INT }, \ 331 { "biosextmem", CTLTYPE_INT }, \ 332 { "nkpde", CTLTYPE_INT }, \ 333 { "booted_kernel", CTLTYPE_STRING }, \ 334 { "diskinfo", CTLTYPE_STRUCT }, \ 335 { "fpu_present", CTLTYPE_INT }, \ 336} 337 338 339/* 340 * Structure for CPU_DISKINFO sysctl call. 341 * XXX this should be somewhere else. 342 */ 343#define MAX_BIOSDISKS 16 344 345struct disklist { 346 int dl_nbiosdisks; /* number of bios disks */ 347 struct biosdisk_info { 348 int bi_dev; /* BIOS device # (0x80 ..) */ 349 int bi_cyl; /* cylinders on disk */ 350 int bi_head; /* heads per track */ 351 int bi_sec; /* sectors per track */ 352 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 353#define BIFLAG_INVALID 0x01 354#define BIFLAG_EXTINT13 0x02 355 int bi_flags; 356 } dl_biosdisks[MAX_BIOSDISKS]; 357 358 int dl_nnativedisks; /* number of native disks */ 359 struct nativedisk_info { 360 char ni_devname[16]; /* native device name */ 361 int ni_nmatches; /* # of matches w/ BIOS */ 362 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 363 } dl_nativedisks[1]; /* actually longer */ 364}; 365 366#endif /* !_AMD64_CPU_H_ */ 367