1 /* $NetBSD: cpu.h,v 1.3 2003/12/30 12:33:15 pk 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_OPT) 41 #include "opt_multiprocessor.h" 42 #include "opt_lockdebug.h" 43 #endif 44 45 /* 46 * Definitions unique to x86-64 cpu support. 47 */ 48 #include <machine/frame.h> 49 #include <machine/segments.h> 50 #include <machine/tss.h> 51 #include <machine/intrdefs.h> 52 #include <x86/cacheinfo.h> 53 54 #include <sys/device.h> 55 #include <sys/lock.h> 56 #include <sys/sched.h> 57 58 struct cpu_info { 59 struct device *ci_dev; 60 struct cpu_info *ci_self; 61 struct schedstate_percpu ci_schedstate; /* scheduler state */ 62 struct cpu_info *ci_next; 63 64 struct lwp *ci_curlwp; 65 struct simplelock ci_slock; 66 u_int ci_cpuid; 67 u_int ci_apicid; 68 u_long ci_spin_locks; 69 u_long ci_simple_locks; 70 71 u_int64_t ci_scratch; 72 73 struct lwp *ci_fpcurlwp; 74 int ci_fpsaving; 75 76 volatile u_int32_t ci_tlb_ipi_mask; 77 78 struct pcb *ci_curpcb; 79 struct pcb *ci_idle_pcb; 80 int ci_idle_tss_sel; 81 82 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 83 u_int32_t ci_ipending; 84 int ci_ilevel; 85 int ci_idepth; 86 u_int32_t ci_imask[NIPL]; 87 u_int32_t ci_iunmask[NIPL]; 88 89 paddr_t ci_idle_pcb_paddr; 90 u_int ci_flags; 91 u_int32_t ci_ipis; 92 93 u_int32_t ci_feature_flags; 94 u_int32_t ci_signature; 95 u_int64_t ci_tsc_freq; 96 97 struct cpu_functions *ci_func; 98 void (*cpu_setup) __P((struct cpu_info *)); 99 void (*ci_info) __P((struct cpu_info *)); 100 101 int ci_want_resched; 102 int ci_astpending; 103 struct trapframe *ci_ddb_regs; 104 105 struct x86_cache_info ci_cinfo[CAI_COUNT]; 106 107 struct timeval ci_cc_time; 108 int64_t ci_cc_cc; 109 int64_t ci_cc_ms_delta; 110 int64_t ci_cc_denom; 111 112 char *ci_gdt; 113 114 struct x86_64_tss ci_doubleflt_tss; 115 struct x86_64_tss ci_ddbipi_tss; 116 117 char *ci_doubleflt_stack; 118 char *ci_ddbipi_stack; 119 120 struct evcnt ci_ipi_events[X86_NIPI]; 121 }; 122 123 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 124 #define CPUF_AP 0x0002 /* CPU is an AP */ 125 #define CPUF_SP 0x0004 /* CPU is only processor */ 126 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 127 128 #define CPUF_PRESENT 0x1000 /* CPU is present */ 129 #define CPUF_RUNNING 0x2000 /* CPU is running */ 130 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 131 #define CPUF_GO 0x8000 /* CPU should start running */ 132 133 134 extern struct cpu_info cpu_info_primary; 135 extern struct cpu_info *cpu_info_list; 136 137 #define CPU_INFO_ITERATOR int 138 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 139 ci != NULL; ci = ci->ci_next 140 141 #if defined(MULTIPROCESSOR) 142 143 #define X86_MAXPROCS 32 /* bitmask; can be bumped to 64 */ 144 145 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 146 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 147 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 148 149 #define curcpu() ({struct cpu_info *__ci; \ 150 asm volatile("movq %%gs:8,%0" : "=r" (__ci)); \ 151 __ci;}) 152 #define cpu_number() (curcpu()->ci_cpuid) 153 154 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 155 156 extern struct cpu_info *cpu_info[X86_MAXPROCS]; 157 158 void cpu_boot_secondary_processors __P((void)); 159 void cpu_init_idle_pcbs __P((void)); 160 161 162 /* 163 * Preempt the current process if in interrupt from user mode, 164 * or after the current trap/syscall if in system mode. 165 */ 166 extern void need_resched __P((struct cpu_info *)); 167 168 #else /* !MULTIPROCESSOR */ 169 170 #define X86_MAXPROCS 1 171 172 #ifdef _KERNEL 173 extern struct cpu_info cpu_info_primary; 174 175 #define curcpu() (&cpu_info_primary) 176 177 #endif 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 /* 187 * Preempt the current process if in interrupt from user mode, 188 * or after the current trap/syscall if in system mode. 189 */ 190 191 #define need_resched(ci) \ 192 do { \ 193 struct cpu_info *__ci = (ci); \ 194 __ci->ci_want_resched = 1; \ 195 if (__ci->ci_curlwp != NULL) \ 196 aston(__ci->ci_curlwp->l_proc); \ 197 } while (/*CONSTCOND*/0) 198 199 #endif 200 201 #define aston(p) ((p)->p_md.md_astpending = 1) 202 203 extern u_int32_t cpus_attached; 204 205 #define curpcb curcpu()->ci_curpcb 206 #define curlwp curcpu()->ci_curlwp 207 208 /* 209 * Arguments to hardclock, softclock and statclock 210 * encapsulate the previous machine state in an opaque 211 * clockframe; for now, use generic intrframe. 212 */ 213 #define clockframe intrframe 214 215 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_rflags) 216 #define CLKF_BASEPRI(frame) (0) 217 #define CLKF_PC(frame) ((frame)->if_rip) 218 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 1) 219 220 /* 221 * This is used during profiling to integrate system time. It can safely 222 * assume that the process is resident. 223 */ 224 #define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) 225 226 /* 227 * Give a profiling tick to the current process when the user profiling 228 * buffer pages are invalid. On the i386, request an ast to send us 229 * through trap(), marking the proc as needing a profiling tick. 230 */ 231 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, aston(p)) 232 233 /* 234 * Notify the current process (p) that it has a signal pending, 235 * process as soon as possible. 236 */ 237 #define signotify(p) aston(p) 238 239 /* 240 * We need a machine-independent name for this. 241 */ 242 extern void (*delay_func) __P((int)); 243 struct timeval; 244 extern void (*microtime_func) __P((struct timeval *)); 245 246 #define DELAY(x) (*delay_func)(x) 247 #define delay(x) (*delay_func)(x) 248 #define microtime(tv) (*microtime_func)(tv) 249 250 251 /* 252 * pull in #defines for kinds of processors 253 */ 254 255 #ifdef _KERNEL 256 extern int biosbasemem; 257 extern int biosextmem; 258 extern int cpu; 259 extern int cpu_feature; 260 extern int cpu_id; 261 extern char cpu_vendor[]; 262 extern int cpuid_level; 263 264 /* kern_microtime.c */ 265 266 extern struct timeval cc_microset_time; 267 void cc_microtime __P((struct timeval *)); 268 void cc_microset __P((struct cpu_info *)); 269 270 /* identcpu.c */ 271 272 void identifycpu __P((struct cpu_info *)); 273 void cpu_probe_features __P((struct cpu_info *)); 274 275 /* machdep.c */ 276 void delay __P((int)); 277 void dumpconf __P((void)); 278 int cpu_maxproc __P((void)); 279 void cpu_reset __P((void)); 280 void x86_64_proc0_tss_ldt_init __P((void)); 281 void x86_64_init_pcb_tss_ldt __P((struct cpu_info *)); 282 void cpu_proc_fork __P((struct proc *, struct proc *)); 283 284 struct region_descriptor; 285 void lgdt __P((struct region_descriptor *)); 286 void fillw __P((short, void *, size_t)); 287 288 struct pcb; 289 void savectx __P((struct pcb *)); 290 void switch_exit __P((struct lwp *, void (*)(struct lwp *))); 291 void proc_trampoline __P((void)); 292 void child_trampoline __P((void)); 293 294 /* clock.c */ 295 void initrtclock __P((void)); 296 void startrtclock __P((void)); 297 void i8254_delay __P((int)); 298 void i8254_microtime __P((struct timeval *)); 299 void i8254_initclocks __P((void)); 300 301 void cpu_init_msrs __P((struct cpu_info *)); 302 303 304 /* vm_machdep.c */ 305 int kvtop __P((caddr_t)); 306 307 /* trap.c */ 308 void child_return __P((void *)); 309 310 /* consinit.c */ 311 void kgdb_port_init __P((void)); 312 313 /* bus_machdep.c */ 314 void x86_bus_space_init __P((void)); 315 void x86_bus_space_mallocok __P((void)); 316 317 #endif /* _KERNEL */ 318 319 #include <machine/psl.h> 320 321 /* 322 * CTL_MACHDEP definitions. 323 */ 324 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 325 #define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 326 #define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 327 #define CPU_NKPDE 4 /* int: number of kernel PDEs */ 328 #define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 329 #define CPU_DISKINFO 6 /* disk geometry information */ 330 #define CPU_FPU_PRESENT 7 /* FPU is present */ 331 #define CPU_MAXID 8 /* number of valid machdep ids */ 332 333 #define CTL_MACHDEP_NAMES { \ 334 { 0, 0 }, \ 335 { "console_device", CTLTYPE_STRUCT }, \ 336 { "biosbasemem", CTLTYPE_INT }, \ 337 { "biosextmem", CTLTYPE_INT }, \ 338 { "nkpde", CTLTYPE_INT }, \ 339 { "booted_kernel", CTLTYPE_STRING }, \ 340 { "diskinfo", CTLTYPE_STRUCT }, \ 341 { "fpu_present", CTLTYPE_INT }, \ 342 } 343 344 345 /* 346 * Structure for CPU_DISKINFO sysctl call. 347 * XXX this should be somewhere else. 348 */ 349 #define MAX_BIOSDISKS 16 350 351 struct disklist { 352 int dl_nbiosdisks; /* number of bios disks */ 353 struct biosdisk_info { 354 int bi_dev; /* BIOS device # (0x80 ..) */ 355 int bi_cyl; /* cylinders on disk */ 356 int bi_head; /* heads per track */ 357 int bi_sec; /* sectors per track */ 358 u_int64_t bi_lbasecs; /* total sec. (iff ext13) */ 359 #define BIFLAG_INVALID 0x01 360 #define BIFLAG_EXTINT13 0x02 361 int bi_flags; 362 } dl_biosdisks[MAX_BIOSDISKS]; 363 364 int dl_nnativedisks; /* number of native disks */ 365 struct nativedisk_info { 366 char ni_devname[16]; /* native device name */ 367 int ni_nmatches; /* # of matches w/ BIOS */ 368 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 369 } dl_nativedisks[1]; /* actually longer */ 370 }; 371 372 #endif /* !_AMD64_CPU_H_ */ 373