1 /* $NetBSD: cpu.h,v 1.110 2019/12/01 15:34:45 ad Exp $ */ 2 3 /* 4 * Copyright (C) 1999 Wolfgang Solfrank. 5 * Copyright (C) 1999 TooLs GmbH. 6 * Copyright (C) 1995-1997 Wolfgang Solfrank. 7 * Copyright (C) 1995-1997 TooLs GmbH. 8 * All rights reserved. 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by TooLs GmbH. 21 * 4. The name of TooLs GmbH may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 30 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _POWERPC_CPU_H_ 37 #define _POWERPC_CPU_H_ 38 39 struct cache_info { 40 int dcache_size; 41 int dcache_line_size; 42 int icache_size; 43 int icache_line_size; 44 }; 45 46 #if defined(_KERNEL) || defined(_KMEMUSER) 47 #if defined(_KERNEL_OPT) 48 #include "opt_lockdebug.h" 49 #include "opt_modular.h" 50 #include "opt_multiprocessor.h" 51 #include "opt_ppcarch.h" 52 #endif 53 54 #ifdef _KERNEL 55 #include <sys/intr.h> 56 #include <sys/device_if.h> 57 #include <sys/evcnt.h> 58 #include <sys/param.h> 59 #include <sys/kernel.h> 60 #endif 61 62 #include <sys/cpu_data.h> 63 64 struct cpu_info { 65 struct cpu_data ci_data; /* MI per-cpu data */ 66 #ifdef _KERNEL 67 device_t ci_dev; /* device of corresponding cpu */ 68 struct cpu_softc *ci_softc; /* private cpu info */ 69 struct lwp *ci_curlwp; /* current owner of the processor */ 70 struct lwp *ci_onproc; /* current user LWP / kthread */ 71 struct pcb *ci_curpcb; 72 struct pmap *ci_curpm; 73 struct lwp *ci_softlwps[SOFTINT_COUNT]; 74 int ci_cpuid; /* from SPR_PIR */ 75 76 int ci_want_resched; 77 volatile uint64_t ci_lastintr; 78 volatile u_long ci_lasttb; 79 volatile int ci_tickspending; 80 volatile int ci_cpl; 81 volatile int ci_iactive; 82 volatile int ci_idepth; 83 union { 84 #if !defined(PPC_BOOKE) && !defined(_MODULE) 85 volatile imask_t un1_ipending; 86 #define ci_ipending ci_un1.un1_ipending 87 #endif 88 uint64_t un1_pad64; 89 } ci_un1; 90 volatile uint32_t ci_pending_ipis; 91 int ci_mtx_oldspl; 92 int ci_mtx_count; 93 #if defined(PPC_IBM4XX) || defined(MODULAR) || defined(_MODULE) 94 char *ci_intstk; 95 #endif 96 #define CI_SAVETEMP (0*CPUSAVE_LEN) 97 #define CI_SAVEDDB (1*CPUSAVE_LEN) 98 #define CI_SAVEIPKDB (2*CPUSAVE_LEN) /* obsolete */ 99 #define CI_SAVEMMU (3*CPUSAVE_LEN) 100 #define CI_SAVEMAX (4*CPUSAVE_LEN) 101 #define CPUSAVE_LEN 8 102 #if !defined(PPC_BOOKE) && !defined(MODULAR) && !defined(_MODULE) 103 #define CPUSAVE_SIZE (CI_SAVEMAX*CPUSAVE_LEN) 104 #else 105 #define CPUSAVE_SIZE 128 106 #endif 107 #define CPUSAVE_R28 0 /* where r28 gets saved */ 108 #define CPUSAVE_R29 1 /* where r29 gets saved */ 109 #define CPUSAVE_R30 2 /* where r30 gets saved */ 110 #define CPUSAVE_R31 3 /* where r31 gets saved */ 111 #define CPUSAVE_DEAR 4 /* where IBM4XX SPR_DEAR gets saved */ 112 #define CPUSAVE_DAR 4 /* where OEA SPR_DAR gets saved */ 113 #define CPUSAVE_ESR 5 /* where IBM4XX SPR_ESR gets saved */ 114 #define CPUSAVE_DSISR 5 /* where OEA SPR_DSISR gets saved */ 115 #define CPUSAVE_SRR0 6 /* where SRR0 gets saved */ 116 #define CPUSAVE_SRR1 7 /* where SRR1 gets saved */ 117 register_t ci_savearea[CPUSAVE_SIZE]; 118 #if defined(PPC_BOOKE) || defined(MODULAR) || defined(_MODULE) 119 uint32_t ci_pmap_asid_cur; 120 union pmap_segtab *ci_pmap_segtabs[2]; 121 #define ci_pmap_kern_segtab ci_pmap_segtabs[0] 122 #define ci_pmap_user_segtab ci_pmap_segtabs[1] 123 struct pmap_tlb_info *ci_tlb_info; 124 #endif /* PPC_BOOKE || MODULAR || _MODULE */ 125 struct cache_info ci_ci; 126 void *ci_sysmon_cookie; 127 void (*ci_idlespin)(void); 128 uint32_t ci_khz; 129 struct evcnt ci_ev_clock; /* clock intrs */ 130 struct evcnt ci_ev_statclock; /* stat clock */ 131 struct evcnt ci_ev_traps; /* calls to trap() */ 132 struct evcnt ci_ev_kdsi; /* kernel DSI traps */ 133 struct evcnt ci_ev_udsi; /* user DSI traps */ 134 struct evcnt ci_ev_udsi_fatal; /* user DSI trap failures */ 135 struct evcnt ci_ev_kisi; /* kernel ISI traps */ 136 struct evcnt ci_ev_isi; /* user ISI traps */ 137 struct evcnt ci_ev_isi_fatal; /* user ISI trap failures */ 138 struct evcnt ci_ev_pgm; /* user PGM traps */ 139 struct evcnt ci_ev_debug; /* user debug traps */ 140 struct evcnt ci_ev_fpu; /* FPU traps */ 141 struct evcnt ci_ev_fpusw; /* FPU context switch */ 142 struct evcnt ci_ev_ali; /* Alignment traps */ 143 struct evcnt ci_ev_ali_fatal; /* Alignment fatal trap */ 144 struct evcnt ci_ev_scalls; /* system call traps */ 145 struct evcnt ci_ev_vec; /* Altivec traps */ 146 struct evcnt ci_ev_vecsw; /* Altivec context switches */ 147 struct evcnt ci_ev_umchk; /* user MCHK events */ 148 struct evcnt ci_ev_ipi; /* IPIs received */ 149 struct evcnt ci_ev_tlbmiss_soft; /* tlb miss (no trap) */ 150 struct evcnt ci_ev_dtlbmiss_hard; /* data tlb miss (trap) */ 151 struct evcnt ci_ev_itlbmiss_hard; /* instruction tlb miss (trap) */ 152 #endif /* _KERNEL */ 153 }; 154 #endif /* _KERNEL || _KMEMUSER */ 155 156 #ifdef _KERNEL 157 158 #if defined(MULTIPROCESSOR) && !defined(_MODULE) 159 struct cpu_hatch_data { 160 int hatch_running; 161 device_t hatch_self; 162 struct cpu_info *hatch_ci; 163 uint32_t hatch_tbu; 164 uint32_t hatch_tbl; 165 #if defined(PPC_OEA64_BRIDGE) || defined (_ARCH_PPC64) 166 uint64_t hatch_hid0; 167 uint64_t hatch_hid1; 168 uint64_t hatch_hid4; 169 uint64_t hatch_hid5; 170 #else 171 uint32_t hatch_hid0; 172 #endif 173 uint32_t hatch_pir; 174 #if defined(PPC_OEA) || defined(PPC_OEA64_BRIDGE) 175 uintptr_t hatch_asr; 176 uintptr_t hatch_sdr1; 177 uint32_t hatch_sr[16]; 178 uintptr_t hatch_ibatu[8], hatch_ibatl[8]; 179 uintptr_t hatch_dbatu[8], hatch_dbatl[8]; 180 #endif 181 #if defined(PPC_BOOKE) 182 vaddr_t hatch_sp; 183 u_int hatch_tlbidx; 184 #endif 185 }; 186 187 struct cpuset_info { 188 kcpuset_t *cpus_running; 189 kcpuset_t *cpus_hatched; 190 kcpuset_t *cpus_paused; 191 kcpuset_t *cpus_resumed; 192 kcpuset_t *cpus_halted; 193 }; 194 195 extern struct cpuset_info cpuset_info; 196 #endif /* MULTIPROCESSOR && !_MODULE */ 197 198 #if defined(MULTIPROCESSOR) || defined(_MODULE) 199 #define cpu_number() (curcpu()->ci_index + 0) 200 201 #define CPU_IS_PRIMARY(ci) ((ci)->ci_cpuid == 0) 202 #define CPU_INFO_ITERATOR int 203 #define CPU_INFO_FOREACH(cii, ci) \ 204 cii = 0, ci = &cpu_info[0]; cii < (ncpu ? ncpu : 1); cii++, ci++ 205 206 #else 207 #define cpu_number() 0 208 209 #define CPU_IS_PRIMARY(ci) true 210 #define CPU_INFO_ITERATOR int 211 #define CPU_INFO_FOREACH(cii, ci) \ 212 (void)cii, ci = curcpu(); ci != NULL; ci = NULL 213 214 #endif /* MULTIPROCESSOR || _MODULE */ 215 216 extern struct cpu_info cpu_info[]; 217 218 static __inline struct cpu_info * curcpu(void) __pure; 219 static __inline struct cpu_info * 220 curcpu(void) 221 { 222 struct cpu_info *ci; 223 224 __asm volatile ("mfsprg0 %0" : "=r"(ci)); 225 return ci; 226 } 227 228 #ifdef __clang__ 229 #define curlwp (curcpu()->ci_curlwp) 230 #else 231 register struct lwp *powerpc_curlwp __asm("r13"); 232 #define curlwp powerpc_curlwp 233 #endif 234 #define curpcb (curcpu()->ci_curpcb) 235 #define curpm (curcpu()->ci_curpm) 236 237 static __inline register_t 238 mfmsr(void) 239 { 240 register_t msr; 241 242 __asm volatile ("mfmsr %0" : "=r"(msr)); 243 return msr; 244 } 245 246 static __inline void 247 mtmsr(register_t msr) 248 { 249 //KASSERT(msr & PSL_CE); 250 //KASSERT(msr & PSL_DE); 251 __asm volatile ("mtmsr %0" : : "r"(msr)); 252 } 253 254 #if !defined(_MODULE) 255 static __inline uint32_t 256 mftbl(void) 257 { 258 uint32_t tbl; 259 260 __asm volatile ( 261 #ifdef PPC_IBM403 262 " mftblo %[tbl]" "\n" 263 #elif defined(PPC_BOOKE) 264 " mfspr %[tbl],268" "\n" 265 #else 266 " mftbl %[tbl]" "\n" 267 #endif 268 : [tbl] "=r" (tbl)); 269 270 return tbl; 271 } 272 273 static __inline uint64_t 274 mftb(void) 275 { 276 uint64_t tb; 277 278 #ifdef _ARCH_PPC64 279 __asm volatile ("mftb %0" : "=r"(tb)); 280 #else 281 int tmp; 282 283 __asm volatile ( 284 #ifdef PPC_IBM403 285 "1: mftbhi %[tb]" "\n" 286 " mftblo %L[tb]" "\n" 287 " mftbhi %[tmp]" "\n" 288 #elif defined(PPC_BOOKE) 289 "1: mfspr %[tb],269" "\n" 290 " mfspr %L[tb],268" "\n" 291 " mfspr %[tmp],269" "\n" 292 #else 293 "1: mftbu %[tb]" "\n" 294 " mftb %L[tb]" "\n" 295 " mftbu %[tmp]" "\n" 296 #endif 297 " cmplw %[tb],%[tmp]" "\n" 298 " bne- 1b" "\n" 299 : [tb] "=r" (tb), [tmp] "=r"(tmp) 300 :: "cr0"); 301 #endif 302 303 return tb; 304 } 305 306 static __inline uint32_t 307 mfrtcl(void) 308 { 309 uint32_t rtcl; 310 311 __asm volatile ("mfrtcl %0" : "=r"(rtcl)); 312 return rtcl; 313 } 314 315 static __inline void 316 mfrtc(uint32_t *rtcp) 317 { 318 uint32_t tmp; 319 320 __asm volatile ( 321 "1: mfrtcu %[rtcu]" "\n" 322 " mfrtcl %[rtcl]" "\n" 323 " mfrtcu %[tmp]" "\n" 324 " cmplw %[rtcu],%[tmp]" "\n" 325 " bne- 1b" 326 : [rtcu] "=r"(rtcp[0]), [rtcl] "=r"(rtcp[1]), [tmp] "=r"(tmp) 327 :: "cr0"); 328 } 329 330 static __inline uint64_t 331 rtc_nanosecs(void) 332 { 333 /* 334 * 601 RTC/DEC registers share clock of 7.8125 MHz, 128 ns per tick. 335 * DEC has max of 25 bits, FFFFFF => 2.14748352 seconds. 336 * RTCU is seconds, 32 bits. 337 * RTCL is nano-seconds, 23 bit counter from 0 - 999,999,872 (999,999,999 - 128 ns) 338 */ 339 uint64_t cycles; 340 uint32_t tmp[2]; 341 342 mfrtc(tmp); 343 344 cycles = tmp[0] * 1000000000; 345 cycles += (tmp[1] >> 7); 346 347 return cycles; 348 } 349 #endif /* !_MODULE */ 350 351 static __inline uint32_t 352 mfpvr(void) 353 { 354 uint32_t pvr; 355 356 __asm volatile ("mfpvr %0" : "=r"(pvr)); 357 return (pvr); 358 } 359 360 #ifdef _MODULE 361 extern const char __CPU_MAXNUM; 362 /* 363 * Make with 0xffff to force a R_PPC_ADDR16_LO without the 364 * corresponding R_PPC_ADDR16_HI relocation. 365 */ 366 #define CPU_MAXNUM (((uintptr_t)&__CPU_MAXNUM)&0xffff) 367 #endif /* _MODULE */ 368 369 #if !defined(_MODULE) 370 extern char *booted_kernel; 371 extern int powersave; 372 extern int cpu_timebase; 373 extern int cpu_printfataltraps; 374 375 struct cpu_info * 376 cpu_attach_common(device_t, int); 377 void cpu_setup(device_t, struct cpu_info *); 378 void cpu_identify(char *, size_t); 379 void cpu_probe_cache(void); 380 381 void dcache_wb_page(vaddr_t); 382 void dcache_wbinv_page(vaddr_t); 383 void dcache_inv_page(vaddr_t); 384 void dcache_zero_page(vaddr_t); 385 void icache_inv_page(vaddr_t); 386 void dcache_wb(vaddr_t, vsize_t); 387 void dcache_wbinv(vaddr_t, vsize_t); 388 void dcache_inv(vaddr_t, vsize_t); 389 void icache_inv(vaddr_t, vsize_t); 390 391 void * mapiodev(paddr_t, psize_t, bool); 392 void unmapiodev(vaddr_t, vsize_t); 393 394 #ifdef MULTIPROCESSOR 395 int md_setup_trampoline(volatile struct cpu_hatch_data *, 396 struct cpu_info *); 397 void md_presync_timebase(volatile struct cpu_hatch_data *); 398 void md_start_timebase(volatile struct cpu_hatch_data *); 399 void md_sync_timebase(volatile struct cpu_hatch_data *); 400 void md_setup_interrupts(void); 401 int cpu_spinup(device_t, struct cpu_info *); 402 register_t 403 cpu_hatch(void); 404 void cpu_spinup_trampoline(void); 405 void cpu_boot_secondary_processors(void); 406 void cpu_halt(void); 407 void cpu_halt_others(void); 408 void cpu_pause(struct trapframe *); 409 void cpu_pause_others(void); 410 void cpu_resume(cpuid_t); 411 void cpu_resume_others(void); 412 int cpu_is_paused(int); 413 void cpu_debug_dump(void); 414 #endif /* MULTIPROCESSOR */ 415 #endif /* !_MODULE */ 416 417 #define cpu_proc_fork(p1, p2) 418 419 #define DELAY(n) delay(n) 420 void delay(unsigned int); 421 422 #define CLKF_USERMODE(cf) cpu_clkf_usermode(cf) 423 #define CLKF_PC(cf) cpu_clkf_pc(cf) 424 #define CLKF_INTR(cf) cpu_clkf_intr(cf) 425 426 bool cpu_clkf_usermode(const struct clockframe *); 427 vaddr_t cpu_clkf_pc(const struct clockframe *); 428 bool cpu_clkf_intr(const struct clockframe *); 429 430 #define LWP_PC(l) cpu_lwp_pc(l) 431 432 vaddr_t cpu_lwp_pc(struct lwp *); 433 434 void cpu_ast(struct lwp *, struct cpu_info *); 435 void * cpu_uarea_alloc(bool); 436 bool cpu_uarea_free(void *); 437 void cpu_signotify(struct lwp *); 438 void cpu_need_proftick(struct lwp *); 439 440 void cpu_fixup_stubs(void); 441 442 #if !defined(PPC_IBM4XX) && !defined(PPC_BOOKE) && !defined(_MODULE) 443 int cpu_get_dfs(void); 444 void cpu_set_dfs(int); 445 446 void oea_init(void (*)(void)); 447 void oea_startup(const char *); 448 void oea_dumpsys(void); 449 void oea_install_extint(void (*)(void)); 450 paddr_t kvtop(void *); 451 452 extern paddr_t msgbuf_paddr; 453 extern int cpu_altivec; 454 #endif 455 456 #endif /* _KERNEL */ 457 458 /* XXX The below breaks unified pmap on ppc32 */ 459 460 #if !defined(CACHELINESIZE) && !defined(_MODULE) \ 461 && (defined(_KERNEL) || defined(_STANDALONE)) 462 #if defined(PPC_IBM403) 463 #define CACHELINESIZE 16 464 #define MAXCACHELINESIZE 16 465 #elif defined (PPC_OEA64_BRIDGE) 466 #define CACHELINESIZE 128 467 #define MAXCACHELINESIZE 128 468 #else 469 #define CACHELINESIZE 32 470 #define MAXCACHELINESIZE 32 471 #endif /* PPC_OEA64_BRIDGE */ 472 #endif 473 474 void __syncicache(void *, size_t); 475 476 /* 477 * CTL_MACHDEP definitions. 478 */ 479 #define CPU_CACHELINE 1 480 #define CPU_TIMEBASE 2 481 #define CPU_CPUTEMP 3 482 #define CPU_PRINTFATALTRAPS 4 483 #define CPU_CACHEINFO 5 484 #define CPU_ALTIVEC 6 485 #define CPU_MODEL 7 486 #define CPU_POWERSAVE 8 /* int: use CPU powersave mode */ 487 #define CPU_BOOTED_DEVICE 9 /* string: device we booted from */ 488 #define CPU_BOOTED_KERNEL 10 /* string: kernel we booted */ 489 #define CPU_EXECPROT 11 /* bool: PROT_EXEC works */ 490 491 #endif /* _POWERPC_CPU_H_ */ 492