1 /* $NetBSD: cpu.h,v 1.151 2007/12/03 22:17:28 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 _I386_CPU_H_ 38 #define _I386_CPU_H_ 39 40 #ifdef _KERNEL 41 #if defined(_KERNEL_OPT) 42 #include "opt_multiprocessor.h" 43 #include "opt_math_emulate.h" 44 #include "opt_user_ldt.h" 45 #include "opt_vm86.h" 46 #endif 47 48 /* 49 * Definitions unique to i386 cpu support. 50 */ 51 #include <machine/frame.h> 52 #include <machine/segments.h> 53 #include <machine/tss.h> 54 #include <machine/intrdefs.h> 55 #include <x86/cacheinfo.h> 56 #include <x86/via_padlock.h> 57 58 #include <sys/device.h> 59 #include <sys/cpu_data.h> 60 #include <sys/cc_microtime.h> 61 62 #include <lib/libkern/libkern.h> /* offsetof */ 63 64 struct intrsource; 65 struct pmap; 66 67 /* 68 * a bunch of this belongs in cpuvar.h; move it later.. 69 */ 70 71 struct cpu_info { 72 struct device *ci_dev; /* pointer to our device */ 73 struct cpu_info *ci_self; /* self-pointer */ 74 void *ci_tlog_base; /* Trap log base */ 75 int32_t ci_tlog_offset; /* Trap log current offset */ 76 77 /* 78 * Will be accessed by other CPUs. 79 */ 80 struct cpu_info *ci_next; /* next cpu */ 81 struct lwp *ci_curlwp; /* current owner of the processor */ 82 struct pmap_cpu *ci_pmap_cpu; /* per-CPU pmap data */ 83 struct lwp *ci_fpcurlwp; /* current owner of the FPU */ 84 int ci_fpsaving; /* save in progress */ 85 cpuid_t ci_cpuid; /* our CPU ID */ 86 int ci_cpumask; /* (1 << CPU ID) */ 87 u_int ci_apicid; /* our APIC ID */ 88 struct cpu_data ci_data; /* MI per-cpu data */ 89 struct cc_microtime_state ci_cc;/* cc_microtime state */ 90 91 /* 92 * Private members. 93 */ 94 struct evcnt ci_tlb_evcnt; /* tlb shootdown counter */ 95 struct pmap *ci_pmap; /* current pmap */ 96 int ci_need_tlbwait; /* need to wait for TLB invalidations */ 97 int ci_want_pmapload; /* pmap_load() is needed */ 98 volatile int ci_tlbstate; /* one of TLBSTATE_ states. see below */ 99 #define TLBSTATE_VALID 0 /* all user tlbs are valid */ 100 #define TLBSTATE_LAZY 1 /* tlbs are valid but won't be kept uptodate */ 101 #define TLBSTATE_STALE 2 /* we might have stale user tlbs */ 102 103 struct intrsource *ci_isources[MAX_INTR_SOURCES]; 104 volatile int ci_mtx_count; /* Negative count of spin mutexes */ 105 volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */ 106 107 /* The following must be aligned for cmpxchg8b. */ 108 struct { 109 uint32_t ipending; 110 int ilevel; 111 } ci_istate __aligned(8); 112 #define ci_ipending ci_istate.ipending 113 #define ci_ilevel ci_istate.ilevel 114 115 int ci_idepth; 116 void * ci_intrstack; 117 uint32_t ci_imask[NIPL]; 118 uint32_t ci_iunmask[NIPL]; 119 120 paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */ 121 uint32_t ci_flags; /* flags; see below */ 122 uint32_t ci_ipis; /* interprocessor interrupts pending */ 123 int sc_apic_version; /* local APIC version */ 124 125 int32_t ci_cpuid_level; 126 uint32_t ci_signature; /* X86 cpuid type */ 127 uint32_t ci_feature_flags;/* X86 %edx CPUID feature bits */ 128 uint32_t ci_feature2_flags;/* X86 %ecx CPUID feature bits */ 129 uint32_t ci_feature3_flags;/* X86 extended feature bits */ 130 uint32_t ci_padlock_flags;/* VIA PadLock feature bits */ 131 uint32_t ci_cpu_class; /* CPU class */ 132 uint32_t ci_brand_id; /* Intel brand id */ 133 uint32_t ci_vendor[4]; /* vendor string */ 134 uint32_t ci_cpu_serial[3]; /* PIII serial number */ 135 uint64_t ci_tsc_freq; /* cpu cycles/second */ 136 volatile uint32_t ci_lapic_counter; 137 138 const struct cpu_functions *ci_func; /* start/stop functions */ 139 void (*cpu_setup)(struct cpu_info *); 140 /* proc-dependant init */ 141 void (*ci_info)(struct cpu_info *); 142 143 int ci_want_resched; 144 struct trapframe *ci_ddb_regs; 145 146 u_int ci_cflush_lsize; /* CFLUSH insn line size */ 147 struct x86_cache_info ci_cinfo[CAI_COUNT]; 148 149 union descriptor *ci_gdt; 150 151 struct i386tss ci_doubleflt_tss; 152 struct i386tss ci_ddbipi_tss; 153 154 char *ci_doubleflt_stack; 155 char *ci_ddbipi_stack; 156 157 struct evcnt ci_ipi_events[X86_NIPI]; 158 159 struct via_padlock ci_vp; /* VIA PadLock private storage */ 160 }; 161 162 /* 163 * Processor flag notes: The "primary" CPU has certain MI-defined 164 * roles (mostly relating to hardclock handling); we distinguish 165 * betwen the processor which booted us, and the processor currently 166 * holding the "primary" role just to give us the flexibility later to 167 * change primaries should we be sufficiently twisted. 168 */ 169 170 #define CPUF_BSP 0x0001 /* CPU is the original BSP */ 171 #define CPUF_AP 0x0002 /* CPU is an AP */ 172 #define CPUF_SP 0x0004 /* CPU is only processor */ 173 #define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */ 174 175 #define CPUF_APIC_CD 0x0010 /* CPU has apic configured */ 176 177 #define CPUF_PRESENT 0x1000 /* CPU is present */ 178 #define CPUF_RUNNING 0x2000 /* CPU is running */ 179 #define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */ 180 #define CPUF_GO 0x8000 /* CPU should start running */ 181 182 /* 183 * We statically allocate the CPU info for the primary CPU (or, 184 * the only CPU on uniprocessors), and the primary CPU is the 185 * first CPU on the CPU info list. 186 */ 187 extern struct cpu_info cpu_info_primary; 188 extern struct cpu_info *cpu_info_list; 189 190 #define CPU_INFO_ITERATOR int 191 #define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \ 192 ci != NULL; ci = ci->ci_next 193 194 #define X86_MAXPROCS 32 /* because we use a bitmask */ 195 196 #define CPU_STARTUP(_ci) ((_ci)->ci_func->start(_ci)) 197 #define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci)) 198 #define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci)) 199 200 #if defined(__GNUC__) && defined(_KERNEL) 201 static struct cpu_info *x86_curcpu(void); 202 static lwp_t *x86_curlwp(void); 203 204 __inline static struct cpu_info * __attribute__((__unused__)) 205 x86_curcpu(void) 206 { 207 struct cpu_info *ci; 208 209 __asm volatile("movl %%fs:%1, %0" : 210 "=r" (ci) : 211 "m" 212 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 213 return ci; 214 } 215 216 __inline static lwp_t * __attribute__((__unused__)) 217 x86_curlwp(void) 218 { 219 lwp_t *l; 220 221 __asm volatile("movl %%fs:%1, %0" : 222 "=r" (l) : 223 "m" 224 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 225 return l; 226 } 227 #else /* __GNUC__ && _KERNEL */ 228 /* For non-GCC and LKMs */ 229 struct cpu_info *x86_curcpu(void); 230 lwp_t *x86_curlwp(void); 231 #endif /* __GNUC__ && _KERNEL */ 232 233 #define cpu_number() (curcpu()->ci_cpuid) 234 235 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 236 237 #define aston(l) ((l)->l_md.md_astpending = 1) 238 239 extern struct cpu_info *cpu_info[X86_MAXPROCS]; 240 241 void cpu_boot_secondary_processors(void); 242 void cpu_init_idle_lwps(void); 243 244 extern uint32_t cpus_attached; 245 246 #define curcpu() x86_curcpu() 247 #define curlwp x86_curlwp() 248 #define curpcb (&curlwp->l_addr->u_pcb) 249 250 /* 251 * Arguments to hardclock, softclock and statclock 252 * encapsulate the previous machine state in an opaque 253 * clockframe; for now, use generic intrframe. 254 */ 255 struct clockframe { 256 struct intrframe cf_if; 257 }; 258 259 #define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_eflags) 260 #define CLKF_PC(frame) ((frame)->cf_if.if_eip) 261 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 262 263 /* 264 * This is used during profiling to integrate system time. It can safely 265 * assume that the process is resident. 266 */ 267 #define LWP_PC(l) ((l)->l_md.md_regs->tf_eip) 268 269 /* 270 * Give a profiling tick to the current process when the user profiling 271 * buffer pages are invalid. On the i386, request an ast to send us 272 * through trap(), marking the proc as needing a profiling tick. 273 */ 274 extern void cpu_need_proftick(struct lwp *l); 275 276 /* 277 * Notify the LWP l that it has a signal pending, process as soon as 278 * possible. 279 */ 280 extern void cpu_signotify(struct lwp *); 281 282 /* 283 * We need a machine-independent name for this. 284 */ 285 extern void (*delay_func)(unsigned int); 286 struct timeval; 287 288 #define DELAY(x) (*delay_func)(x) 289 #define delay(x) (*delay_func)(x) 290 291 /* 292 * pull in #defines for kinds of processors 293 */ 294 #include <machine/cputypes.h> 295 296 struct cpu_nocpuid_nameclass { 297 int cpu_vendor; 298 const char *cpu_vendorname; 299 const char *cpu_name; 300 int cpu_class; 301 void (*cpu_setup)(struct cpu_info *); 302 void (*cpu_cacheinfo)(struct cpu_info *); 303 void (*cpu_info)(struct cpu_info *); 304 }; 305 306 307 struct cpu_cpuid_nameclass { 308 const char *cpu_id; 309 int cpu_vendor; 310 const char *cpu_vendorname; 311 struct cpu_cpuid_family { 312 int cpu_class; 313 const char *cpu_models[CPU_MAXMODEL+2]; 314 void (*cpu_setup)(struct cpu_info *); 315 void (*cpu_probe)(struct cpu_info *); 316 void (*cpu_info)(struct cpu_info *); 317 } cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1]; 318 }; 319 320 extern int biosbasemem; 321 extern int biosextmem; 322 extern unsigned int cpu_feature; 323 extern unsigned int cpu_feature2; 324 extern unsigned int cpu_feature_padlock; 325 extern int cpu; 326 extern int cpu_class; 327 extern char cpu_brand_string[]; 328 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[]; 329 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[]; 330 331 extern int i386_use_fxsave; 332 extern int i386_has_sse; 333 extern int i386_has_sse2; 334 335 /* machdep.c */ 336 void dumpconf(void); 337 int cpu_maxproc(void); 338 void cpu_reset(void); 339 void i386_proc0_tss_ldt_init(void); 340 341 extern int tmx86_has_longrun; 342 extern u_int crusoe_longrun; 343 extern u_int crusoe_frequency; 344 extern u_int crusoe_voltage; 345 extern u_int crusoe_percentage; 346 extern u_int tmx86_set_longrun_mode(u_int); 347 void tmx86_get_longrun_status_all(void); 348 u_int tmx86_get_longrun_mode(void); 349 void identifycpu(struct cpu_info *); 350 351 /* vm_machdep.c */ 352 void cpu_proc_fork(struct proc *, struct proc *); 353 354 /* locore.s */ 355 struct region_descriptor; 356 void lgdt(struct region_descriptor *); 357 void fillw(short, void *, size_t); 358 359 struct pcb; 360 void savectx(struct pcb *); 361 void lwp_trampoline(void); 362 363 /* clock.c */ 364 void initrtclock(u_long); 365 void startrtclock(void); 366 void i8254_delay(unsigned int); 367 void i8254_microtime(struct timeval *); 368 void i8254_initclocks(void); 369 370 /* cpu.c */ 371 372 void cpu_probe_features(struct cpu_info *); 373 374 /* npx.c */ 375 void npxsave_lwp(struct lwp *, int); 376 void npxsave_cpu(struct cpu_info *, int); 377 378 /* vm_machdep.c */ 379 int kvtop(void *); 380 381 #ifdef MATH_EMULATE 382 /* math_emulate.c */ 383 int math_emulate(struct trapframe *, ksiginfo_t *); 384 #endif 385 386 #ifdef USER_LDT 387 /* sys_machdep.h */ 388 int x86_get_ldt(struct lwp *, void *, register_t *); 389 int x86_set_ldt(struct lwp *, void *, register_t *); 390 #endif 391 392 /* isa_machdep.c */ 393 void isa_defaultirq(void); 394 int isa_nmi(void); 395 396 #ifdef VM86 397 /* vm86.c */ 398 void vm86_gpfault(struct lwp *, int); 399 #endif /* VM86 */ 400 401 /* consinit.c */ 402 void kgdb_port_init(void); 403 404 /* bus_machdep.c */ 405 void x86_bus_space_init(void); 406 void x86_bus_space_mallocok(void); 407 408 #include <machine/psl.h> /* Must be after struct cpu_info declaration */ 409 410 #endif /* _KERNEL */ 411 412 /* 413 * CTL_MACHDEP definitions. 414 */ 415 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 416 #define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 417 #define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 418 /* CPU_NKPDE 4 obsolete: int: number of kernel PDEs */ 419 #define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */ 420 #define CPU_DISKINFO 6 /* struct disklist *: 421 * disk geometry information */ 422 #define CPU_FPU_PRESENT 7 /* int: FPU is present */ 423 #define CPU_OSFXSR 8 /* int: OS uses FXSAVE/FXRSTOR */ 424 #define CPU_SSE 9 /* int: OS/CPU supports SSE */ 425 #define CPU_SSE2 10 /* int: OS/CPU supports SSE2 */ 426 #define CPU_TMLR_MODE 11 /* int: longrun mode 427 * 0: minimum frequency 428 * 1: economy 429 * 2: performance 430 * 3: maximum frequency 431 */ 432 #define CPU_TMLR_FREQUENCY 12 /* int: current frequency */ 433 #define CPU_TMLR_VOLTAGE 13 /* int: curret voltage */ 434 #define CPU_TMLR_PERCENTAGE 14 /* int: current clock percentage */ 435 #define CPU_MAXID 15 /* number of valid machdep ids */ 436 437 #define CTL_MACHDEP_NAMES { \ 438 { 0, 0 }, \ 439 { "console_device", CTLTYPE_STRUCT }, \ 440 { "biosbasemem", CTLTYPE_INT }, \ 441 { "biosextmem", CTLTYPE_INT }, \ 442 { "booted_kernel", CTLTYPE_STRING }, \ 443 { "diskinfo", CTLTYPE_STRUCT }, \ 444 { "fpu_present", CTLTYPE_INT }, \ 445 { "osfxsr", CTLTYPE_INT }, \ 446 { "sse", CTLTYPE_INT }, \ 447 { "sse2", CTLTYPE_INT }, \ 448 { "tm_longrun_mode", CTLTYPE_INT }, \ 449 { "tm_longrun_frequency", CTLTYPE_INT }, \ 450 { "tm_longrun_voltage", CTLTYPE_INT }, \ 451 { "tm_longrun_percentage", CTLTYPE_INT }, \ 452 } 453 454 /* 455 * Structure for CPU_DISKINFO sysctl call. 456 * XXX this should be somewhere else. 457 */ 458 #define MAX_BIOSDISKS 16 459 460 struct disklist { 461 int dl_nbiosdisks; /* number of bios disks */ 462 struct biosdisk_info { 463 int bi_dev; /* BIOS device # (0x80 ..) */ 464 int bi_cyl; /* cylinders on disk */ 465 int bi_head; /* heads per track */ 466 int bi_sec; /* sectors per track */ 467 uint64_t bi_lbasecs; /* total sec. (iff ext13) */ 468 #define BIFLAG_INVALID 0x01 469 #define BIFLAG_EXTINT13 0x02 470 int bi_flags; 471 } dl_biosdisks[MAX_BIOSDISKS]; 472 473 int dl_nnativedisks; /* number of native disks */ 474 struct nativedisk_info { 475 char ni_devname[16]; /* native device name */ 476 int ni_nmatches; /* # of matches w/ BIOS */ 477 int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */ 478 } dl_nativedisks[1]; /* actually longer */ 479 }; 480 #endif /* !_I386_CPU_H_ */ 481