1 /* 2 * PowerPC MMU, TLB, SLB and BAT emulation helpers for QEMU. 3 * 4 * Copyright (c) 2003-2007 Jocelyn Mayer 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 #include "qemu/osdep.h" 20 #include "qapi/error.h" 21 #include "cpu.h" 22 #include "exec/helper-proto.h" 23 #include "sysemu/kvm.h" 24 #include "kvm_ppc.h" 25 #include "mmu-hash64.h" 26 #include "mmu-hash32.h" 27 #include "exec/exec-all.h" 28 #include "exec/cpu_ldst.h" 29 #include "exec/log.h" 30 #include "helper_regs.h" 31 32 //#define DEBUG_MMU 33 //#define DEBUG_BATS 34 //#define DEBUG_SOFTWARE_TLB 35 //#define DUMP_PAGE_TABLES 36 //#define FLUSH_ALL_TLBS 37 38 #ifdef DEBUG_MMU 39 # define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) 40 #else 41 # define LOG_MMU_STATE(cpu) do { } while (0) 42 #endif 43 44 #ifdef DEBUG_SOFTWARE_TLB 45 # define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) 46 #else 47 # define LOG_SWTLB(...) do { } while (0) 48 #endif 49 50 #ifdef DEBUG_BATS 51 # define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) 52 #else 53 # define LOG_BATS(...) do { } while (0) 54 #endif 55 56 /*****************************************************************************/ 57 /* PowerPC MMU emulation */ 58 59 /* Context used internally during MMU translations */ 60 typedef struct mmu_ctx_t mmu_ctx_t; 61 struct mmu_ctx_t { 62 hwaddr raddr; /* Real address */ 63 hwaddr eaddr; /* Effective address */ 64 int prot; /* Protection bits */ 65 hwaddr hash[2]; /* Pagetable hash values */ 66 target_ulong ptem; /* Virtual segment ID | API */ 67 int key; /* Access key */ 68 int nx; /* Non-execute area */ 69 }; 70 71 /* Common routines used by software and hardware TLBs emulation */ 72 static inline int pte_is_valid(target_ulong pte0) 73 { 74 return pte0 & 0x80000000 ? 1 : 0; 75 } 76 77 static inline void pte_invalidate(target_ulong *pte0) 78 { 79 *pte0 &= ~0x80000000; 80 } 81 82 #define PTE_PTEM_MASK 0x7FFFFFBF 83 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) 84 85 static int pp_check(int key, int pp, int nx) 86 { 87 int access; 88 89 /* Compute access rights */ 90 access = 0; 91 if (key == 0) { 92 switch (pp) { 93 case 0x0: 94 case 0x1: 95 case 0x2: 96 access |= PAGE_WRITE; 97 /* No break here */ 98 case 0x3: 99 access |= PAGE_READ; 100 break; 101 } 102 } else { 103 switch (pp) { 104 case 0x0: 105 access = 0; 106 break; 107 case 0x1: 108 case 0x3: 109 access = PAGE_READ; 110 break; 111 case 0x2: 112 access = PAGE_READ | PAGE_WRITE; 113 break; 114 } 115 } 116 if (nx == 0) { 117 access |= PAGE_EXEC; 118 } 119 120 return access; 121 } 122 123 static int check_prot(int prot, int rw, int access_type) 124 { 125 int ret; 126 127 if (access_type == ACCESS_CODE) { 128 if (prot & PAGE_EXEC) { 129 ret = 0; 130 } else { 131 ret = -2; 132 } 133 } else if (rw) { 134 if (prot & PAGE_WRITE) { 135 ret = 0; 136 } else { 137 ret = -2; 138 } 139 } else { 140 if (prot & PAGE_READ) { 141 ret = 0; 142 } else { 143 ret = -2; 144 } 145 } 146 147 return ret; 148 } 149 150 static inline int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, 151 target_ulong pte1, int h, int rw, int type) 152 { 153 target_ulong ptem, mmask; 154 int access, ret, pteh, ptev, pp; 155 156 ret = -1; 157 /* Check validity and table match */ 158 ptev = pte_is_valid(pte0); 159 pteh = (pte0 >> 6) & 1; 160 if (ptev && h == pteh) { 161 /* Check vsid & api */ 162 ptem = pte0 & PTE_PTEM_MASK; 163 mmask = PTE_CHECK_MASK; 164 pp = pte1 & 0x00000003; 165 if (ptem == ctx->ptem) { 166 if (ctx->raddr != (hwaddr)-1ULL) { 167 /* all matches should have equal RPN, WIMG & PP */ 168 if ((ctx->raddr & mmask) != (pte1 & mmask)) { 169 qemu_log_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); 170 return -3; 171 } 172 } 173 /* Compute access rights */ 174 access = pp_check(ctx->key, pp, ctx->nx); 175 /* Keep the matching PTE informations */ 176 ctx->raddr = pte1; 177 ctx->prot = access; 178 ret = check_prot(ctx->prot, rw, type); 179 if (ret == 0) { 180 /* Access granted */ 181 qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); 182 } else { 183 /* Access right violation */ 184 qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); 185 } 186 } 187 } 188 189 return ret; 190 } 191 192 static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, 193 int ret, int rw) 194 { 195 int store = 0; 196 197 /* Update page flags */ 198 if (!(*pte1p & 0x00000100)) { 199 /* Update accessed flag */ 200 *pte1p |= 0x00000100; 201 store = 1; 202 } 203 if (!(*pte1p & 0x00000080)) { 204 if (rw == 1 && ret == 0) { 205 /* Update changed flag */ 206 *pte1p |= 0x00000080; 207 store = 1; 208 } else { 209 /* Force page fault for first write access */ 210 ctx->prot &= ~PAGE_WRITE; 211 } 212 } 213 214 return store; 215 } 216 217 /* Software driven TLB helpers */ 218 static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, 219 int way, int is_code) 220 { 221 int nr; 222 223 /* Select TLB num in a way from address */ 224 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); 225 /* Select TLB way */ 226 nr += env->tlb_per_way * way; 227 /* 6xx have separate TLBs for instructions and data */ 228 if (is_code && env->id_tlbs == 1) { 229 nr += env->nb_tlb; 230 } 231 232 return nr; 233 } 234 235 static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) 236 { 237 PowerPCCPU *cpu = ppc_env_get_cpu(env); 238 ppc6xx_tlb_t *tlb; 239 int nr, max; 240 241 /* LOG_SWTLB("Invalidate all TLBs\n"); */ 242 /* Invalidate all defined software TLB */ 243 max = env->nb_tlb; 244 if (env->id_tlbs == 1) { 245 max *= 2; 246 } 247 for (nr = 0; nr < max; nr++) { 248 tlb = &env->tlb.tlb6[nr]; 249 pte_invalidate(&tlb->pte0); 250 } 251 tlb_flush(CPU(cpu)); 252 } 253 254 static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, 255 target_ulong eaddr, 256 int is_code, int match_epn) 257 { 258 #if !defined(FLUSH_ALL_TLBS) 259 CPUState *cs = CPU(ppc_env_get_cpu(env)); 260 ppc6xx_tlb_t *tlb; 261 int way, nr; 262 263 /* Invalidate ITLB + DTLB, all ways */ 264 for (way = 0; way < env->nb_ways; way++) { 265 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); 266 tlb = &env->tlb.tlb6[nr]; 267 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { 268 LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, 269 env->nb_tlb, eaddr); 270 pte_invalidate(&tlb->pte0); 271 tlb_flush_page(cs, tlb->EPN); 272 } 273 } 274 #else 275 /* XXX: PowerPC specification say this is valid as well */ 276 ppc6xx_tlb_invalidate_all(env); 277 #endif 278 } 279 280 static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, 281 target_ulong eaddr, int is_code) 282 { 283 ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); 284 } 285 286 static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, 287 int is_code, target_ulong pte0, target_ulong pte1) 288 { 289 ppc6xx_tlb_t *tlb; 290 int nr; 291 292 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); 293 tlb = &env->tlb.tlb6[nr]; 294 LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx 295 " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); 296 /* Invalidate any pending reference in QEMU for this virtual address */ 297 ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); 298 tlb->pte0 = pte0; 299 tlb->pte1 = pte1; 300 tlb->EPN = EPN; 301 /* Store last way for LRU mechanism */ 302 env->last_way = way; 303 } 304 305 static inline int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, 306 target_ulong eaddr, int rw, int access_type) 307 { 308 ppc6xx_tlb_t *tlb; 309 int nr, best, way; 310 int ret; 311 312 best = -1; 313 ret = -1; /* No TLB found */ 314 for (way = 0; way < env->nb_ways; way++) { 315 nr = ppc6xx_tlb_getnum(env, eaddr, way, 316 access_type == ACCESS_CODE ? 1 : 0); 317 tlb = &env->tlb.tlb6[nr]; 318 /* This test "emulates" the PTE index match for hardware TLBs */ 319 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { 320 LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx 321 "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, 322 pte_is_valid(tlb->pte0) ? "valid" : "inval", 323 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); 324 continue; 325 } 326 LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " 327 TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, 328 pte_is_valid(tlb->pte0) ? "valid" : "inval", 329 tlb->EPN, eaddr, tlb->pte1, 330 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D'); 331 switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) { 332 case -3: 333 /* TLB inconsistency */ 334 return -1; 335 case -2: 336 /* Access violation */ 337 ret = -2; 338 best = nr; 339 break; 340 case -1: 341 default: 342 /* No match */ 343 break; 344 case 0: 345 /* access granted */ 346 /* XXX: we should go on looping to check all TLBs consistency 347 * but we can speed-up the whole thing as the 348 * result would be undefined if TLBs are not consistent. 349 */ 350 ret = 0; 351 best = nr; 352 goto done; 353 } 354 } 355 if (best != -1) { 356 done: 357 LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", 358 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); 359 /* Update page flags */ 360 pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, rw); 361 } 362 363 return ret; 364 } 365 366 /* Perform BAT hit & translation */ 367 static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, 368 int *validp, int *protp, target_ulong *BATu, 369 target_ulong *BATl) 370 { 371 target_ulong bl; 372 int pp, valid, prot; 373 374 bl = (*BATu & 0x00001FFC) << 15; 375 valid = 0; 376 prot = 0; 377 if (((msr_pr == 0) && (*BATu & 0x00000002)) || 378 ((msr_pr != 0) && (*BATu & 0x00000001))) { 379 valid = 1; 380 pp = *BATl & 0x00000003; 381 if (pp != 0) { 382 prot = PAGE_READ | PAGE_EXEC; 383 if (pp == 0x2) { 384 prot |= PAGE_WRITE; 385 } 386 } 387 } 388 *blp = bl; 389 *validp = valid; 390 *protp = prot; 391 } 392 393 static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, 394 target_ulong virtual, int rw, int type) 395 { 396 target_ulong *BATlt, *BATut, *BATu, *BATl; 397 target_ulong BEPIl, BEPIu, bl; 398 int i, valid, prot; 399 int ret = -1; 400 401 LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, 402 type == ACCESS_CODE ? 'I' : 'D', virtual); 403 switch (type) { 404 case ACCESS_CODE: 405 BATlt = env->IBAT[1]; 406 BATut = env->IBAT[0]; 407 break; 408 default: 409 BATlt = env->DBAT[1]; 410 BATut = env->DBAT[0]; 411 break; 412 } 413 for (i = 0; i < env->nb_BATs; i++) { 414 BATu = &BATut[i]; 415 BATl = &BATlt[i]; 416 BEPIu = *BATu & 0xF0000000; 417 BEPIl = *BATu & 0x0FFE0000; 418 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); 419 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx 420 " BATl " TARGET_FMT_lx "\n", __func__, 421 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl); 422 if ((virtual & 0xF0000000) == BEPIu && 423 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { 424 /* BAT matches */ 425 if (valid != 0) { 426 /* Get physical address */ 427 ctx->raddr = (*BATl & 0xF0000000) | 428 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | 429 (virtual & 0x0001F000); 430 /* Compute access rights */ 431 ctx->prot = prot; 432 ret = check_prot(ctx->prot, rw, type); 433 if (ret == 0) { 434 LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", 435 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', 436 ctx->prot & PAGE_WRITE ? 'W' : '-'); 437 } 438 break; 439 } 440 } 441 } 442 if (ret < 0) { 443 #if defined(DEBUG_BATS) 444 if (qemu_log_enabled()) { 445 LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); 446 for (i = 0; i < 4; i++) { 447 BATu = &BATut[i]; 448 BATl = &BATlt[i]; 449 BEPIu = *BATu & 0xF0000000; 450 BEPIl = *BATu & 0x0FFE0000; 451 bl = (*BATu & 0x00001FFC) << 15; 452 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx 453 " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " 454 TARGET_FMT_lx " " TARGET_FMT_lx "\n", 455 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, 456 *BATu, *BATl, BEPIu, BEPIl, bl); 457 } 458 } 459 #endif 460 } 461 /* No hit */ 462 return ret; 463 } 464 465 /* Perform segment based translation */ 466 static inline int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, 467 target_ulong eaddr, int rw, int type) 468 { 469 hwaddr hash; 470 target_ulong vsid; 471 int ds, pr, target_page_bits; 472 int ret; 473 target_ulong sr, pgidx; 474 475 pr = msr_pr; 476 ctx->eaddr = eaddr; 477 478 sr = env->sr[eaddr >> 28]; 479 ctx->key = (((sr & 0x20000000) && (pr != 0)) || 480 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; 481 ds = sr & 0x80000000 ? 1 : 0; 482 ctx->nx = sr & 0x10000000 ? 1 : 0; 483 vsid = sr & 0x00FFFFFF; 484 target_page_bits = TARGET_PAGE_BITS; 485 qemu_log_mask(CPU_LOG_MMU, 486 "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx 487 " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx 488 " ir=%d dr=%d pr=%d %d t=%d\n", 489 eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, 490 (int)msr_dr, pr != 0 ? 1 : 0, rw, type); 491 pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; 492 hash = vsid ^ pgidx; 493 ctx->ptem = (vsid << 7) | (pgidx >> 10); 494 495 qemu_log_mask(CPU_LOG_MMU, 496 "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", 497 ctx->key, ds, ctx->nx, vsid); 498 ret = -1; 499 if (!ds) { 500 /* Check if instruction fetch is allowed, if needed */ 501 if (type != ACCESS_CODE || ctx->nx == 0) { 502 /* Page address translation */ 503 qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx 504 " htab_mask " TARGET_FMT_plx 505 " hash " TARGET_FMT_plx "\n", 506 env->htab_base, env->htab_mask, hash); 507 ctx->hash[0] = hash; 508 ctx->hash[1] = ~hash; 509 510 /* Initialize real address with an invalid value */ 511 ctx->raddr = (hwaddr)-1ULL; 512 /* Software TLB search */ 513 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type); 514 #if defined(DUMP_PAGE_TABLES) 515 if (qemu_loglevel_mask(CPU_LOG_MMU)) { 516 CPUState *cs = ENV_GET_CPU(env); 517 hwaddr curaddr; 518 uint32_t a0, a1, a2, a3; 519 520 qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx 521 "\n", env->htab_base, env->htab_mask + 0x80); 522 for (curaddr = env->htab_base; 523 curaddr < (env->htab_base + env->htab_mask + 0x80); 524 curaddr += 16) { 525 a0 = ldl_phys(cs->as, curaddr); 526 a1 = ldl_phys(cs->as, curaddr + 4); 527 a2 = ldl_phys(cs->as, curaddr + 8); 528 a3 = ldl_phys(cs->as, curaddr + 12); 529 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { 530 qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", 531 curaddr, a0, a1, a2, a3); 532 } 533 } 534 } 535 #endif 536 } else { 537 qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); 538 ret = -3; 539 } 540 } else { 541 target_ulong sr; 542 543 qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); 544 /* Direct-store segment : absolutely *BUGGY* for now */ 545 546 /* Direct-store implies a 32-bit MMU. 547 * Check the Segment Register's bus unit ID (BUID). 548 */ 549 sr = env->sr[eaddr >> 28]; 550 if ((sr & 0x1FF00000) >> 20 == 0x07f) { 551 /* Memory-forced I/O controller interface access */ 552 /* If T=1 and BUID=x'07F', the 601 performs a memory access 553 * to SR[28-31] LA[4-31], bypassing all protection mechanisms. 554 */ 555 ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); 556 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; 557 return 0; 558 } 559 560 switch (type) { 561 case ACCESS_INT: 562 /* Integer load/store : only access allowed */ 563 break; 564 case ACCESS_CODE: 565 /* No code fetch is allowed in direct-store areas */ 566 return -4; 567 case ACCESS_FLOAT: 568 /* Floating point load/store */ 569 return -4; 570 case ACCESS_RES: 571 /* lwarx, ldarx or srwcx. */ 572 return -4; 573 case ACCESS_CACHE: 574 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */ 575 /* Should make the instruction do no-op. 576 * As it already do no-op, it's quite easy :-) 577 */ 578 ctx->raddr = eaddr; 579 return 0; 580 case ACCESS_EXT: 581 /* eciwx or ecowx */ 582 return -4; 583 default: 584 qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " 585 "address translation\n"); 586 return -4; 587 } 588 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) { 589 ctx->raddr = eaddr; 590 ret = 2; 591 } else { 592 ret = -2; 593 } 594 } 595 596 return ret; 597 } 598 599 /* Generic TLB check function for embedded PowerPC implementations */ 600 static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, 601 hwaddr *raddrp, 602 target_ulong address, uint32_t pid, int ext, 603 int i) 604 { 605 target_ulong mask; 606 607 /* Check valid flag */ 608 if (!(tlb->prot & PAGE_VALID)) { 609 return -1; 610 } 611 mask = ~(tlb->size - 1); 612 LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx 613 " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, 614 mask, (uint32_t)tlb->PID, tlb->prot); 615 /* Check PID */ 616 if (tlb->PID != 0 && tlb->PID != pid) { 617 return -1; 618 } 619 /* Check effective address */ 620 if ((address & mask) != tlb->EPN) { 621 return -1; 622 } 623 *raddrp = (tlb->RPN & mask) | (address & ~mask); 624 if (ext) { 625 /* Extend the physical address to 36 bits */ 626 *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; 627 } 628 629 return 0; 630 } 631 632 /* Generic TLB search function for PowerPC embedded implementations */ 633 static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, 634 uint32_t pid) 635 { 636 ppcemb_tlb_t *tlb; 637 hwaddr raddr; 638 int i, ret; 639 640 /* Default return value is no match */ 641 ret = -1; 642 for (i = 0; i < env->nb_tlb; i++) { 643 tlb = &env->tlb.tlbe[i]; 644 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { 645 ret = i; 646 break; 647 } 648 } 649 650 return ret; 651 } 652 653 /* Helpers specific to PowerPC 40x implementations */ 654 static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) 655 { 656 PowerPCCPU *cpu = ppc_env_get_cpu(env); 657 ppcemb_tlb_t *tlb; 658 int i; 659 660 for (i = 0; i < env->nb_tlb; i++) { 661 tlb = &env->tlb.tlbe[i]; 662 tlb->prot &= ~PAGE_VALID; 663 } 664 tlb_flush(CPU(cpu)); 665 } 666 667 static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, 668 target_ulong address, int rw, 669 int access_type) 670 { 671 ppcemb_tlb_t *tlb; 672 hwaddr raddr; 673 int i, ret, zsel, zpr, pr; 674 675 ret = -1; 676 raddr = (hwaddr)-1ULL; 677 pr = msr_pr; 678 for (i = 0; i < env->nb_tlb; i++) { 679 tlb = &env->tlb.tlbe[i]; 680 if (ppcemb_tlb_check(env, tlb, &raddr, address, 681 env->spr[SPR_40x_PID], 0, i) < 0) { 682 continue; 683 } 684 zsel = (tlb->attr >> 4) & 0xF; 685 zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; 686 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n", 687 __func__, i, zsel, zpr, rw, tlb->attr); 688 /* Check execute enable bit */ 689 switch (zpr) { 690 case 0x2: 691 if (pr != 0) { 692 goto check_perms; 693 } 694 /* No break here */ 695 case 0x3: 696 /* All accesses granted */ 697 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; 698 ret = 0; 699 break; 700 case 0x0: 701 if (pr != 0) { 702 /* Raise Zone protection fault. */ 703 env->spr[SPR_40x_ESR] = 1 << 22; 704 ctx->prot = 0; 705 ret = -2; 706 break; 707 } 708 /* No break here */ 709 case 0x1: 710 check_perms: 711 /* Check from TLB entry */ 712 ctx->prot = tlb->prot; 713 ret = check_prot(ctx->prot, rw, access_type); 714 if (ret == -2) { 715 env->spr[SPR_40x_ESR] = 0; 716 } 717 break; 718 } 719 if (ret >= 0) { 720 ctx->raddr = raddr; 721 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx 722 " %d %d\n", __func__, address, ctx->raddr, ctx->prot, 723 ret); 724 return 0; 725 } 726 } 727 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx 728 " %d %d\n", __func__, address, raddr, ctx->prot, ret); 729 730 return ret; 731 } 732 733 void store_40x_sler(CPUPPCState *env, uint32_t val) 734 { 735 PowerPCCPU *cpu = ppc_env_get_cpu(env); 736 737 /* XXX: TO BE FIXED */ 738 if (val != 0x00000000) { 739 cpu_abort(CPU(cpu), "Little-endian regions are not supported by now\n"); 740 } 741 env->spr[SPR_405_SLER] = val; 742 } 743 744 static inline int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, 745 hwaddr *raddr, int *prot, 746 target_ulong address, int rw, 747 int access_type, int i) 748 { 749 int ret, prot2; 750 751 if (ppcemb_tlb_check(env, tlb, raddr, address, 752 env->spr[SPR_BOOKE_PID], 753 !env->nb_pids, i) >= 0) { 754 goto found_tlb; 755 } 756 757 if (env->spr[SPR_BOOKE_PID1] && 758 ppcemb_tlb_check(env, tlb, raddr, address, 759 env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { 760 goto found_tlb; 761 } 762 763 if (env->spr[SPR_BOOKE_PID2] && 764 ppcemb_tlb_check(env, tlb, raddr, address, 765 env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { 766 goto found_tlb; 767 } 768 769 LOG_SWTLB("%s: TLB entry not found\n", __func__); 770 return -1; 771 772 found_tlb: 773 774 if (msr_pr != 0) { 775 prot2 = tlb->prot & 0xF; 776 } else { 777 prot2 = (tlb->prot >> 4) & 0xF; 778 } 779 780 /* Check the address space */ 781 if (access_type == ACCESS_CODE) { 782 if (msr_ir != (tlb->attr & 1)) { 783 LOG_SWTLB("%s: AS doesn't match\n", __func__); 784 return -1; 785 } 786 787 *prot = prot2; 788 if (prot2 & PAGE_EXEC) { 789 LOG_SWTLB("%s: good TLB!\n", __func__); 790 return 0; 791 } 792 793 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2); 794 ret = -3; 795 } else { 796 if (msr_dr != (tlb->attr & 1)) { 797 LOG_SWTLB("%s: AS doesn't match\n", __func__); 798 return -1; 799 } 800 801 *prot = prot2; 802 if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) { 803 LOG_SWTLB("%s: found TLB!\n", __func__); 804 return 0; 805 } 806 807 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2); 808 ret = -2; 809 } 810 811 return ret; 812 } 813 814 static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, 815 target_ulong address, int rw, 816 int access_type) 817 { 818 ppcemb_tlb_t *tlb; 819 hwaddr raddr; 820 int i, ret; 821 822 ret = -1; 823 raddr = (hwaddr)-1ULL; 824 for (i = 0; i < env->nb_tlb; i++) { 825 tlb = &env->tlb.tlbe[i]; 826 ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, rw, 827 access_type, i); 828 if (!ret) { 829 break; 830 } 831 } 832 833 if (ret >= 0) { 834 ctx->raddr = raddr; 835 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx 836 " %d %d\n", __func__, address, ctx->raddr, ctx->prot, 837 ret); 838 } else { 839 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx 840 " %d %d\n", __func__, address, raddr, ctx->prot, ret); 841 } 842 843 return ret; 844 } 845 846 static void booke206_flush_tlb(CPUPPCState *env, int flags, 847 const int check_iprot) 848 { 849 PowerPCCPU *cpu = ppc_env_get_cpu(env); 850 int tlb_size; 851 int i, j; 852 ppcmas_tlb_t *tlb = env->tlb.tlbm; 853 854 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 855 if (flags & (1 << i)) { 856 tlb_size = booke206_tlb_size(env, i); 857 for (j = 0; j < tlb_size; j++) { 858 if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { 859 tlb[j].mas1 &= ~MAS1_VALID; 860 } 861 } 862 } 863 tlb += booke206_tlb_size(env, i); 864 } 865 866 tlb_flush(CPU(cpu)); 867 } 868 869 static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, 870 ppcmas_tlb_t *tlb) 871 { 872 int tlbm_size; 873 874 tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; 875 876 return 1024ULL << tlbm_size; 877 } 878 879 /* TLB check function for MAS based SoftTLBs */ 880 static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, 881 hwaddr *raddrp, target_ulong address, 882 uint32_t pid) 883 { 884 hwaddr mask; 885 uint32_t tlb_pid; 886 887 if (!msr_cm) { 888 /* In 32bit mode we can only address 32bit EAs */ 889 address = (uint32_t)address; 890 } 891 892 /* Check valid flag */ 893 if (!(tlb->mas1 & MAS1_VALID)) { 894 return -1; 895 } 896 897 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); 898 LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" 899 PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" 900 PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, 901 tlb->mas7_3, tlb->mas8); 902 903 /* Check PID */ 904 tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; 905 if (tlb_pid != 0 && tlb_pid != pid) { 906 return -1; 907 } 908 909 /* Check effective address */ 910 if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { 911 return -1; 912 } 913 914 if (raddrp) { 915 *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); 916 } 917 918 return 0; 919 } 920 921 static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, 922 hwaddr *raddr, int *prot, 923 target_ulong address, int rw, 924 int access_type) 925 { 926 int ret; 927 int prot2 = 0; 928 929 if (ppcmas_tlb_check(env, tlb, raddr, address, 930 env->spr[SPR_BOOKE_PID]) >= 0) { 931 goto found_tlb; 932 } 933 934 if (env->spr[SPR_BOOKE_PID1] && 935 ppcmas_tlb_check(env, tlb, raddr, address, 936 env->spr[SPR_BOOKE_PID1]) >= 0) { 937 goto found_tlb; 938 } 939 940 if (env->spr[SPR_BOOKE_PID2] && 941 ppcmas_tlb_check(env, tlb, raddr, address, 942 env->spr[SPR_BOOKE_PID2]) >= 0) { 943 goto found_tlb; 944 } 945 946 LOG_SWTLB("%s: TLB entry not found\n", __func__); 947 return -1; 948 949 found_tlb: 950 951 if (msr_pr != 0) { 952 if (tlb->mas7_3 & MAS3_UR) { 953 prot2 |= PAGE_READ; 954 } 955 if (tlb->mas7_3 & MAS3_UW) { 956 prot2 |= PAGE_WRITE; 957 } 958 if (tlb->mas7_3 & MAS3_UX) { 959 prot2 |= PAGE_EXEC; 960 } 961 } else { 962 if (tlb->mas7_3 & MAS3_SR) { 963 prot2 |= PAGE_READ; 964 } 965 if (tlb->mas7_3 & MAS3_SW) { 966 prot2 |= PAGE_WRITE; 967 } 968 if (tlb->mas7_3 & MAS3_SX) { 969 prot2 |= PAGE_EXEC; 970 } 971 } 972 973 /* Check the address space and permissions */ 974 if (access_type == ACCESS_CODE) { 975 if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { 976 LOG_SWTLB("%s: AS doesn't match\n", __func__); 977 return -1; 978 } 979 980 *prot = prot2; 981 if (prot2 & PAGE_EXEC) { 982 LOG_SWTLB("%s: good TLB!\n", __func__); 983 return 0; 984 } 985 986 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2); 987 ret = -3; 988 } else { 989 if (msr_dr != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { 990 LOG_SWTLB("%s: AS doesn't match\n", __func__); 991 return -1; 992 } 993 994 *prot = prot2; 995 if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) { 996 LOG_SWTLB("%s: found TLB!\n", __func__); 997 return 0; 998 } 999 1000 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2); 1001 ret = -2; 1002 } 1003 1004 return ret; 1005 } 1006 1007 static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, 1008 target_ulong address, int rw, 1009 int access_type) 1010 { 1011 ppcmas_tlb_t *tlb; 1012 hwaddr raddr; 1013 int i, j, ret; 1014 1015 ret = -1; 1016 raddr = (hwaddr)-1ULL; 1017 1018 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 1019 int ways = booke206_tlb_ways(env, i); 1020 1021 for (j = 0; j < ways; j++) { 1022 tlb = booke206_get_tlbm(env, i, address, j); 1023 if (!tlb) { 1024 continue; 1025 } 1026 ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, 1027 rw, access_type); 1028 if (ret != -1) { 1029 goto found_tlb; 1030 } 1031 } 1032 } 1033 1034 found_tlb: 1035 1036 if (ret >= 0) { 1037 ctx->raddr = raddr; 1038 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx 1039 " %d %d\n", __func__, address, ctx->raddr, ctx->prot, 1040 ret); 1041 } else { 1042 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx 1043 " %d %d\n", __func__, address, raddr, ctx->prot, ret); 1044 } 1045 1046 return ret; 1047 } 1048 1049 static const char *book3e_tsize_to_str[32] = { 1050 "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", 1051 "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", 1052 "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", 1053 "1T", "2T" 1054 }; 1055 1056 static void mmubooke_dump_mmu(FILE *f, fprintf_function cpu_fprintf, 1057 CPUPPCState *env) 1058 { 1059 ppcemb_tlb_t *entry; 1060 int i; 1061 1062 if (kvm_enabled() && !env->kvm_sw_tlb) { 1063 cpu_fprintf(f, "Cannot access KVM TLB\n"); 1064 return; 1065 } 1066 1067 cpu_fprintf(f, "\nTLB:\n"); 1068 cpu_fprintf(f, "Effective Physical Size PID Prot " 1069 "Attr\n"); 1070 1071 entry = &env->tlb.tlbe[0]; 1072 for (i = 0; i < env->nb_tlb; i++, entry++) { 1073 hwaddr ea, pa; 1074 target_ulong mask; 1075 uint64_t size = (uint64_t)entry->size; 1076 char size_buf[20]; 1077 1078 /* Check valid flag */ 1079 if (!(entry->prot & PAGE_VALID)) { 1080 continue; 1081 } 1082 1083 mask = ~(entry->size - 1); 1084 ea = entry->EPN & mask; 1085 pa = entry->RPN & mask; 1086 /* Extend the physical address to 36 bits */ 1087 pa |= (hwaddr)(entry->RPN & 0xF) << 32; 1088 size /= 1024; 1089 if (size >= 1024) { 1090 snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / 1024); 1091 } else { 1092 snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size); 1093 } 1094 cpu_fprintf(f, "0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", 1095 (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, 1096 entry->prot, entry->attr); 1097 } 1098 1099 } 1100 1101 static void mmubooke206_dump_one_tlb(FILE *f, fprintf_function cpu_fprintf, 1102 CPUPPCState *env, int tlbn, int offset, 1103 int tlbsize) 1104 { 1105 ppcmas_tlb_t *entry; 1106 int i; 1107 1108 cpu_fprintf(f, "\nTLB%d:\n", tlbn); 1109 cpu_fprintf(f, "Effective Physical Size TID TS SRWX" 1110 " URWX WIMGE U0123\n"); 1111 1112 entry = &env->tlb.tlbm[offset]; 1113 for (i = 0; i < tlbsize; i++, entry++) { 1114 hwaddr ea, pa, size; 1115 int tsize; 1116 1117 if (!(entry->mas1 & MAS1_VALID)) { 1118 continue; 1119 } 1120 1121 tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; 1122 size = 1024ULL << tsize; 1123 ea = entry->mas2 & ~(size - 1); 1124 pa = entry->mas7_3 & ~(size - 1); 1125 1126 cpu_fprintf(f, "0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" 1127 "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", 1128 (uint64_t)ea, (uint64_t)pa, 1129 book3e_tsize_to_str[tsize], 1130 (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, 1131 (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, 1132 entry->mas7_3 & MAS3_SR ? 'R' : '-', 1133 entry->mas7_3 & MAS3_SW ? 'W' : '-', 1134 entry->mas7_3 & MAS3_SX ? 'X' : '-', 1135 entry->mas7_3 & MAS3_UR ? 'R' : '-', 1136 entry->mas7_3 & MAS3_UW ? 'W' : '-', 1137 entry->mas7_3 & MAS3_UX ? 'X' : '-', 1138 entry->mas2 & MAS2_W ? 'W' : '-', 1139 entry->mas2 & MAS2_I ? 'I' : '-', 1140 entry->mas2 & MAS2_M ? 'M' : '-', 1141 entry->mas2 & MAS2_G ? 'G' : '-', 1142 entry->mas2 & MAS2_E ? 'E' : '-', 1143 entry->mas7_3 & MAS3_U0 ? '0' : '-', 1144 entry->mas7_3 & MAS3_U1 ? '1' : '-', 1145 entry->mas7_3 & MAS3_U2 ? '2' : '-', 1146 entry->mas7_3 & MAS3_U3 ? '3' : '-'); 1147 } 1148 } 1149 1150 static void mmubooke206_dump_mmu(FILE *f, fprintf_function cpu_fprintf, 1151 CPUPPCState *env) 1152 { 1153 int offset = 0; 1154 int i; 1155 1156 if (kvm_enabled() && !env->kvm_sw_tlb) { 1157 cpu_fprintf(f, "Cannot access KVM TLB\n"); 1158 return; 1159 } 1160 1161 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 1162 int size = booke206_tlb_size(env, i); 1163 1164 if (size == 0) { 1165 continue; 1166 } 1167 1168 mmubooke206_dump_one_tlb(f, cpu_fprintf, env, i, offset, size); 1169 offset += size; 1170 } 1171 } 1172 1173 static void mmu6xx_dump_BATs(FILE *f, fprintf_function cpu_fprintf, 1174 CPUPPCState *env, int type) 1175 { 1176 target_ulong *BATlt, *BATut, *BATu, *BATl; 1177 target_ulong BEPIl, BEPIu, bl; 1178 int i; 1179 1180 switch (type) { 1181 case ACCESS_CODE: 1182 BATlt = env->IBAT[1]; 1183 BATut = env->IBAT[0]; 1184 break; 1185 default: 1186 BATlt = env->DBAT[1]; 1187 BATut = env->DBAT[0]; 1188 break; 1189 } 1190 1191 for (i = 0; i < env->nb_BATs; i++) { 1192 BATu = &BATut[i]; 1193 BATl = &BATlt[i]; 1194 BEPIu = *BATu & 0xF0000000; 1195 BEPIl = *BATu & 0x0FFE0000; 1196 bl = (*BATu & 0x00001FFC) << 15; 1197 cpu_fprintf(f, "%s BAT%d BATu " TARGET_FMT_lx 1198 " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " 1199 TARGET_FMT_lx " " TARGET_FMT_lx "\n", 1200 type == ACCESS_CODE ? "code" : "data", i, 1201 *BATu, *BATl, BEPIu, BEPIl, bl); 1202 } 1203 } 1204 1205 static void mmu6xx_dump_mmu(FILE *f, fprintf_function cpu_fprintf, 1206 CPUPPCState *env) 1207 { 1208 ppc6xx_tlb_t *tlb; 1209 target_ulong sr; 1210 int type, way, entry, i; 1211 1212 cpu_fprintf(f, "HTAB base = 0x%"HWADDR_PRIx"\n", env->htab_base); 1213 cpu_fprintf(f, "HTAB mask = 0x%"HWADDR_PRIx"\n", env->htab_mask); 1214 1215 cpu_fprintf(f, "\nSegment registers:\n"); 1216 for (i = 0; i < 32; i++) { 1217 sr = env->sr[i]; 1218 if (sr & 0x80000000) { 1219 cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d BUID=0x%03x " 1220 "CNTLR_SPEC=0x%05x\n", i, 1221 sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, 1222 sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), 1223 (uint32_t)(sr & 0xFFFFF)); 1224 } else { 1225 cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, 1226 sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, 1227 sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, 1228 (uint32_t)(sr & 0x00FFFFFF)); 1229 } 1230 } 1231 1232 cpu_fprintf(f, "\nBATs:\n"); 1233 mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_INT); 1234 mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_CODE); 1235 1236 if (env->id_tlbs != 1) { 1237 cpu_fprintf(f, "ERROR: 6xx MMU should have separated TLB" 1238 " for code and data\n"); 1239 } 1240 1241 cpu_fprintf(f, "\nTLBs [EPN EPN + SIZE]\n"); 1242 1243 for (type = 0; type < 2; type++) { 1244 for (way = 0; way < env->nb_ways; way++) { 1245 for (entry = env->nb_tlb * type + env->tlb_per_way * way; 1246 entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); 1247 entry++) { 1248 1249 tlb = &env->tlb.tlb6[entry]; 1250 cpu_fprintf(f, "%s TLB %02d/%02d way:%d %s [" 1251 TARGET_FMT_lx " " TARGET_FMT_lx "]\n", 1252 type ? "code" : "data", entry % env->nb_tlb, 1253 env->nb_tlb, way, 1254 pte_is_valid(tlb->pte0) ? "valid" : "inval", 1255 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); 1256 } 1257 } 1258 } 1259 } 1260 1261 void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env) 1262 { 1263 switch (env->mmu_model) { 1264 case POWERPC_MMU_BOOKE: 1265 mmubooke_dump_mmu(f, cpu_fprintf, env); 1266 break; 1267 case POWERPC_MMU_BOOKE206: 1268 mmubooke206_dump_mmu(f, cpu_fprintf, env); 1269 break; 1270 case POWERPC_MMU_SOFT_6xx: 1271 case POWERPC_MMU_SOFT_74xx: 1272 mmu6xx_dump_mmu(f, cpu_fprintf, env); 1273 break; 1274 #if defined(TARGET_PPC64) 1275 case POWERPC_MMU_64B: 1276 case POWERPC_MMU_2_03: 1277 case POWERPC_MMU_2_06: 1278 case POWERPC_MMU_2_06a: 1279 case POWERPC_MMU_2_07: 1280 case POWERPC_MMU_2_07a: 1281 dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env)); 1282 break; 1283 #endif 1284 default: 1285 qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); 1286 } 1287 } 1288 1289 static inline int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, 1290 target_ulong eaddr, int rw) 1291 { 1292 int in_plb, ret; 1293 1294 ctx->raddr = eaddr; 1295 ctx->prot = PAGE_READ | PAGE_EXEC; 1296 ret = 0; 1297 switch (env->mmu_model) { 1298 case POWERPC_MMU_SOFT_6xx: 1299 case POWERPC_MMU_SOFT_74xx: 1300 case POWERPC_MMU_SOFT_4xx: 1301 case POWERPC_MMU_REAL: 1302 case POWERPC_MMU_BOOKE: 1303 ctx->prot |= PAGE_WRITE; 1304 break; 1305 1306 case POWERPC_MMU_SOFT_4xx_Z: 1307 if (unlikely(msr_pe != 0)) { 1308 /* 403 family add some particular protections, 1309 * using PBL/PBU registers for accesses with no translation. 1310 */ 1311 in_plb = 1312 /* Check PLB validity */ 1313 (env->pb[0] < env->pb[1] && 1314 /* and address in plb area */ 1315 eaddr >= env->pb[0] && eaddr < env->pb[1]) || 1316 (env->pb[2] < env->pb[3] && 1317 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; 1318 if (in_plb ^ msr_px) { 1319 /* Access in protected area */ 1320 if (rw == 1) { 1321 /* Access is not allowed */ 1322 ret = -2; 1323 } 1324 } else { 1325 /* Read-write access is allowed */ 1326 ctx->prot |= PAGE_WRITE; 1327 } 1328 } 1329 break; 1330 1331 default: 1332 /* Caller's checks mean we should never get here for other models */ 1333 abort(); 1334 return -1; 1335 } 1336 1337 return ret; 1338 } 1339 1340 static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, 1341 target_ulong eaddr, int rw, int access_type) 1342 { 1343 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1344 int ret = -1; 1345 bool real_mode = (access_type == ACCESS_CODE && msr_ir == 0) 1346 || (access_type != ACCESS_CODE && msr_dr == 0); 1347 1348 #if 0 1349 qemu_log("%s\n", __func__); 1350 #endif 1351 1352 switch (env->mmu_model) { 1353 case POWERPC_MMU_SOFT_6xx: 1354 case POWERPC_MMU_SOFT_74xx: 1355 if (real_mode) { 1356 ret = check_physical(env, ctx, eaddr, rw); 1357 } else { 1358 /* Try to find a BAT */ 1359 if (env->nb_BATs != 0) { 1360 ret = get_bat_6xx_tlb(env, ctx, eaddr, rw, access_type); 1361 } 1362 if (ret < 0) { 1363 /* We didn't match any BAT entry or don't have BATs */ 1364 ret = get_segment_6xx_tlb(env, ctx, eaddr, rw, access_type); 1365 } 1366 } 1367 break; 1368 1369 case POWERPC_MMU_SOFT_4xx: 1370 case POWERPC_MMU_SOFT_4xx_Z: 1371 if (real_mode) { 1372 ret = check_physical(env, ctx, eaddr, rw); 1373 } else { 1374 ret = mmu40x_get_physical_address(env, ctx, eaddr, 1375 rw, access_type); 1376 } 1377 break; 1378 case POWERPC_MMU_BOOKE: 1379 ret = mmubooke_get_physical_address(env, ctx, eaddr, 1380 rw, access_type); 1381 break; 1382 case POWERPC_MMU_BOOKE206: 1383 ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw, 1384 access_type); 1385 break; 1386 case POWERPC_MMU_MPC8xx: 1387 /* XXX: TODO */ 1388 cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n"); 1389 break; 1390 case POWERPC_MMU_REAL: 1391 if (real_mode) { 1392 ret = check_physical(env, ctx, eaddr, rw); 1393 } else { 1394 cpu_abort(CPU(cpu), "PowerPC in real mode do not do any translation\n"); 1395 } 1396 return -1; 1397 default: 1398 cpu_abort(CPU(cpu), "Unknown or invalid MMU model\n"); 1399 return -1; 1400 } 1401 #if 0 1402 qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n", 1403 __func__, eaddr, ret, ctx->raddr); 1404 #endif 1405 1406 return ret; 1407 } 1408 1409 hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) 1410 { 1411 PowerPCCPU *cpu = POWERPC_CPU(cs); 1412 CPUPPCState *env = &cpu->env; 1413 mmu_ctx_t ctx; 1414 1415 switch (env->mmu_model) { 1416 #if defined(TARGET_PPC64) 1417 case POWERPC_MMU_64B: 1418 case POWERPC_MMU_2_03: 1419 case POWERPC_MMU_2_06: 1420 case POWERPC_MMU_2_06a: 1421 case POWERPC_MMU_2_07: 1422 case POWERPC_MMU_2_07a: 1423 return ppc_hash64_get_phys_page_debug(cpu, addr); 1424 #endif 1425 1426 case POWERPC_MMU_32B: 1427 case POWERPC_MMU_601: 1428 return ppc_hash32_get_phys_page_debug(cpu, addr); 1429 1430 default: 1431 ; 1432 } 1433 1434 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) { 1435 1436 /* Some MMUs have separate TLBs for code and data. If we only try an 1437 * ACCESS_INT, we may not be able to read instructions mapped by code 1438 * TLBs, so we also try a ACCESS_CODE. 1439 */ 1440 if (unlikely(get_physical_address(env, &ctx, addr, 0, 1441 ACCESS_CODE) != 0)) { 1442 return -1; 1443 } 1444 } 1445 1446 return ctx.raddr & TARGET_PAGE_MASK; 1447 } 1448 1449 static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, 1450 int rw) 1451 { 1452 env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; 1453 env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; 1454 env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; 1455 env->spr[SPR_BOOKE_MAS3] = 0; 1456 env->spr[SPR_BOOKE_MAS6] = 0; 1457 env->spr[SPR_BOOKE_MAS7] = 0; 1458 1459 /* AS */ 1460 if (((rw == 2) && msr_ir) || ((rw != 2) && msr_dr)) { 1461 env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; 1462 env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; 1463 } 1464 1465 env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; 1466 env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; 1467 1468 switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { 1469 case MAS4_TIDSELD_PID0: 1470 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID] << MAS1_TID_SHIFT; 1471 break; 1472 case MAS4_TIDSELD_PID1: 1473 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID1] << MAS1_TID_SHIFT; 1474 break; 1475 case MAS4_TIDSELD_PID2: 1476 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID2] << MAS1_TID_SHIFT; 1477 break; 1478 } 1479 1480 env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; 1481 1482 /* next victim logic */ 1483 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; 1484 env->last_way++; 1485 env->last_way &= booke206_tlb_ways(env, 0) - 1; 1486 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; 1487 } 1488 1489 /* Perform address translation */ 1490 static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, 1491 int rw, int mmu_idx) 1492 { 1493 CPUState *cs = CPU(ppc_env_get_cpu(env)); 1494 PowerPCCPU *cpu = POWERPC_CPU(cs); 1495 mmu_ctx_t ctx; 1496 int access_type; 1497 int ret = 0; 1498 1499 if (rw == 2) { 1500 /* code access */ 1501 rw = 0; 1502 access_type = ACCESS_CODE; 1503 } else { 1504 /* data access */ 1505 access_type = env->access_type; 1506 } 1507 ret = get_physical_address(env, &ctx, address, rw, access_type); 1508 if (ret == 0) { 1509 tlb_set_page(cs, address & TARGET_PAGE_MASK, 1510 ctx.raddr & TARGET_PAGE_MASK, ctx.prot, 1511 mmu_idx, TARGET_PAGE_SIZE); 1512 ret = 0; 1513 } else if (ret < 0) { 1514 LOG_MMU_STATE(cs); 1515 if (access_type == ACCESS_CODE) { 1516 switch (ret) { 1517 case -1: 1518 /* No matches in page tables or TLB */ 1519 switch (env->mmu_model) { 1520 case POWERPC_MMU_SOFT_6xx: 1521 cs->exception_index = POWERPC_EXCP_IFTLB; 1522 env->error_code = 1 << 18; 1523 env->spr[SPR_IMISS] = address; 1524 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; 1525 goto tlb_miss; 1526 case POWERPC_MMU_SOFT_74xx: 1527 cs->exception_index = POWERPC_EXCP_IFTLB; 1528 goto tlb_miss_74xx; 1529 case POWERPC_MMU_SOFT_4xx: 1530 case POWERPC_MMU_SOFT_4xx_Z: 1531 cs->exception_index = POWERPC_EXCP_ITLB; 1532 env->error_code = 0; 1533 env->spr[SPR_40x_DEAR] = address; 1534 env->spr[SPR_40x_ESR] = 0x00000000; 1535 break; 1536 case POWERPC_MMU_BOOKE206: 1537 booke206_update_mas_tlb_miss(env, address, rw); 1538 /* fall through */ 1539 case POWERPC_MMU_BOOKE: 1540 cs->exception_index = POWERPC_EXCP_ITLB; 1541 env->error_code = 0; 1542 env->spr[SPR_BOOKE_DEAR] = address; 1543 return -1; 1544 case POWERPC_MMU_MPC8xx: 1545 /* XXX: TODO */ 1546 cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); 1547 break; 1548 case POWERPC_MMU_REAL: 1549 cpu_abort(cs, "PowerPC in real mode should never raise " 1550 "any MMU exceptions\n"); 1551 return -1; 1552 default: 1553 cpu_abort(cs, "Unknown or invalid MMU model\n"); 1554 return -1; 1555 } 1556 break; 1557 case -2: 1558 /* Access rights violation */ 1559 cs->exception_index = POWERPC_EXCP_ISI; 1560 env->error_code = 0x08000000; 1561 break; 1562 case -3: 1563 /* No execute protection violation */ 1564 if ((env->mmu_model == POWERPC_MMU_BOOKE) || 1565 (env->mmu_model == POWERPC_MMU_BOOKE206)) { 1566 env->spr[SPR_BOOKE_ESR] = 0x00000000; 1567 } 1568 cs->exception_index = POWERPC_EXCP_ISI; 1569 env->error_code = 0x10000000; 1570 break; 1571 case -4: 1572 /* Direct store exception */ 1573 /* No code fetch is allowed in direct-store areas */ 1574 cs->exception_index = POWERPC_EXCP_ISI; 1575 env->error_code = 0x10000000; 1576 break; 1577 } 1578 } else { 1579 switch (ret) { 1580 case -1: 1581 /* No matches in page tables or TLB */ 1582 switch (env->mmu_model) { 1583 case POWERPC_MMU_SOFT_6xx: 1584 if (rw == 1) { 1585 cs->exception_index = POWERPC_EXCP_DSTLB; 1586 env->error_code = 1 << 16; 1587 } else { 1588 cs->exception_index = POWERPC_EXCP_DLTLB; 1589 env->error_code = 0; 1590 } 1591 env->spr[SPR_DMISS] = address; 1592 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; 1593 tlb_miss: 1594 env->error_code |= ctx.key << 19; 1595 env->spr[SPR_HASH1] = env->htab_base + 1596 get_pteg_offset32(cpu, ctx.hash[0]); 1597 env->spr[SPR_HASH2] = env->htab_base + 1598 get_pteg_offset32(cpu, ctx.hash[1]); 1599 break; 1600 case POWERPC_MMU_SOFT_74xx: 1601 if (rw == 1) { 1602 cs->exception_index = POWERPC_EXCP_DSTLB; 1603 } else { 1604 cs->exception_index = POWERPC_EXCP_DLTLB; 1605 } 1606 tlb_miss_74xx: 1607 /* Implement LRU algorithm */ 1608 env->error_code = ctx.key << 19; 1609 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | 1610 ((env->last_way + 1) & (env->nb_ways - 1)); 1611 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; 1612 break; 1613 case POWERPC_MMU_SOFT_4xx: 1614 case POWERPC_MMU_SOFT_4xx_Z: 1615 cs->exception_index = POWERPC_EXCP_DTLB; 1616 env->error_code = 0; 1617 env->spr[SPR_40x_DEAR] = address; 1618 if (rw) { 1619 env->spr[SPR_40x_ESR] = 0x00800000; 1620 } else { 1621 env->spr[SPR_40x_ESR] = 0x00000000; 1622 } 1623 break; 1624 case POWERPC_MMU_MPC8xx: 1625 /* XXX: TODO */ 1626 cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); 1627 break; 1628 case POWERPC_MMU_BOOKE206: 1629 booke206_update_mas_tlb_miss(env, address, rw); 1630 /* fall through */ 1631 case POWERPC_MMU_BOOKE: 1632 cs->exception_index = POWERPC_EXCP_DTLB; 1633 env->error_code = 0; 1634 env->spr[SPR_BOOKE_DEAR] = address; 1635 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0; 1636 return -1; 1637 case POWERPC_MMU_REAL: 1638 cpu_abort(cs, "PowerPC in real mode should never raise " 1639 "any MMU exceptions\n"); 1640 return -1; 1641 default: 1642 cpu_abort(cs, "Unknown or invalid MMU model\n"); 1643 return -1; 1644 } 1645 break; 1646 case -2: 1647 /* Access rights violation */ 1648 cs->exception_index = POWERPC_EXCP_DSI; 1649 env->error_code = 0; 1650 if (env->mmu_model == POWERPC_MMU_SOFT_4xx 1651 || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { 1652 env->spr[SPR_40x_DEAR] = address; 1653 if (rw) { 1654 env->spr[SPR_40x_ESR] |= 0x00800000; 1655 } 1656 } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || 1657 (env->mmu_model == POWERPC_MMU_BOOKE206)) { 1658 env->spr[SPR_BOOKE_DEAR] = address; 1659 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0; 1660 } else { 1661 env->spr[SPR_DAR] = address; 1662 if (rw == 1) { 1663 env->spr[SPR_DSISR] = 0x0A000000; 1664 } else { 1665 env->spr[SPR_DSISR] = 0x08000000; 1666 } 1667 } 1668 break; 1669 case -4: 1670 /* Direct store exception */ 1671 switch (access_type) { 1672 case ACCESS_FLOAT: 1673 /* Floating point load/store */ 1674 cs->exception_index = POWERPC_EXCP_ALIGN; 1675 env->error_code = POWERPC_EXCP_ALIGN_FP; 1676 env->spr[SPR_DAR] = address; 1677 break; 1678 case ACCESS_RES: 1679 /* lwarx, ldarx or stwcx. */ 1680 cs->exception_index = POWERPC_EXCP_DSI; 1681 env->error_code = 0; 1682 env->spr[SPR_DAR] = address; 1683 if (rw == 1) { 1684 env->spr[SPR_DSISR] = 0x06000000; 1685 } else { 1686 env->spr[SPR_DSISR] = 0x04000000; 1687 } 1688 break; 1689 case ACCESS_EXT: 1690 /* eciwx or ecowx */ 1691 cs->exception_index = POWERPC_EXCP_DSI; 1692 env->error_code = 0; 1693 env->spr[SPR_DAR] = address; 1694 if (rw == 1) { 1695 env->spr[SPR_DSISR] = 0x06100000; 1696 } else { 1697 env->spr[SPR_DSISR] = 0x04100000; 1698 } 1699 break; 1700 default: 1701 printf("DSI: invalid exception (%d)\n", ret); 1702 cs->exception_index = POWERPC_EXCP_PROGRAM; 1703 env->error_code = 1704 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; 1705 env->spr[SPR_DAR] = address; 1706 break; 1707 } 1708 break; 1709 } 1710 } 1711 #if 0 1712 printf("%s: set exception to %d %02x\n", __func__, 1713 cs->exception, env->error_code); 1714 #endif 1715 ret = 1; 1716 } 1717 1718 return ret; 1719 } 1720 1721 /*****************************************************************************/ 1722 /* BATs management */ 1723 #if !defined(FLUSH_ALL_TLBS) 1724 static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu, 1725 target_ulong mask) 1726 { 1727 CPUState *cs = CPU(ppc_env_get_cpu(env)); 1728 target_ulong base, end, page; 1729 1730 base = BATu & ~0x0001FFFF; 1731 end = base + mask + 0x00020000; 1732 LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " (" 1733 TARGET_FMT_lx ")\n", base, end, mask); 1734 for (page = base; page != end; page += TARGET_PAGE_SIZE) { 1735 tlb_flush_page(cs, page); 1736 } 1737 LOG_BATS("Flush done\n"); 1738 } 1739 #endif 1740 1741 static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr, 1742 target_ulong value) 1743 { 1744 LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID, 1745 nr, ul == 0 ? 'u' : 'l', value, env->nip); 1746 } 1747 1748 void helper_store_ibatu(CPUPPCState *env, uint32_t nr, target_ulong value) 1749 { 1750 target_ulong mask; 1751 #if defined(FLUSH_ALL_TLBS) 1752 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1753 #endif 1754 1755 dump_store_bat(env, 'I', 0, nr, value); 1756 if (env->IBAT[0][nr] != value) { 1757 mask = (value << 15) & 0x0FFE0000UL; 1758 #if !defined(FLUSH_ALL_TLBS) 1759 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1760 #endif 1761 /* When storing valid upper BAT, mask BEPI and BRPN 1762 * and invalidate all TLBs covered by this BAT 1763 */ 1764 mask = (value << 15) & 0x0FFE0000UL; 1765 env->IBAT[0][nr] = (value & 0x00001FFFUL) | 1766 (value & ~0x0001FFFFUL & ~mask); 1767 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) | 1768 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask); 1769 #if !defined(FLUSH_ALL_TLBS) 1770 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1771 #else 1772 tlb_flush(CPU(cpu)); 1773 #endif 1774 } 1775 } 1776 1777 void helper_store_ibatl(CPUPPCState *env, uint32_t nr, target_ulong value) 1778 { 1779 dump_store_bat(env, 'I', 1, nr, value); 1780 env->IBAT[1][nr] = value; 1781 } 1782 1783 void helper_store_dbatu(CPUPPCState *env, uint32_t nr, target_ulong value) 1784 { 1785 target_ulong mask; 1786 #if defined(FLUSH_ALL_TLBS) 1787 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1788 #endif 1789 1790 dump_store_bat(env, 'D', 0, nr, value); 1791 if (env->DBAT[0][nr] != value) { 1792 /* When storing valid upper BAT, mask BEPI and BRPN 1793 * and invalidate all TLBs covered by this BAT 1794 */ 1795 mask = (value << 15) & 0x0FFE0000UL; 1796 #if !defined(FLUSH_ALL_TLBS) 1797 do_invalidate_BAT(env, env->DBAT[0][nr], mask); 1798 #endif 1799 mask = (value << 15) & 0x0FFE0000UL; 1800 env->DBAT[0][nr] = (value & 0x00001FFFUL) | 1801 (value & ~0x0001FFFFUL & ~mask); 1802 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) | 1803 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask); 1804 #if !defined(FLUSH_ALL_TLBS) 1805 do_invalidate_BAT(env, env->DBAT[0][nr], mask); 1806 #else 1807 tlb_flush(CPU(cpu)); 1808 #endif 1809 } 1810 } 1811 1812 void helper_store_dbatl(CPUPPCState *env, uint32_t nr, target_ulong value) 1813 { 1814 dump_store_bat(env, 'D', 1, nr, value); 1815 env->DBAT[1][nr] = value; 1816 } 1817 1818 void helper_store_601_batu(CPUPPCState *env, uint32_t nr, target_ulong value) 1819 { 1820 target_ulong mask; 1821 #if defined(FLUSH_ALL_TLBS) 1822 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1823 int do_inval; 1824 #endif 1825 1826 dump_store_bat(env, 'I', 0, nr, value); 1827 if (env->IBAT[0][nr] != value) { 1828 #if defined(FLUSH_ALL_TLBS) 1829 do_inval = 0; 1830 #endif 1831 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL; 1832 if (env->IBAT[1][nr] & 0x40) { 1833 /* Invalidate BAT only if it is valid */ 1834 #if !defined(FLUSH_ALL_TLBS) 1835 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1836 #else 1837 do_inval = 1; 1838 #endif 1839 } 1840 /* When storing valid upper BAT, mask BEPI and BRPN 1841 * and invalidate all TLBs covered by this BAT 1842 */ 1843 env->IBAT[0][nr] = (value & 0x00001FFFUL) | 1844 (value & ~0x0001FFFFUL & ~mask); 1845 env->DBAT[0][nr] = env->IBAT[0][nr]; 1846 if (env->IBAT[1][nr] & 0x40) { 1847 #if !defined(FLUSH_ALL_TLBS) 1848 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1849 #else 1850 do_inval = 1; 1851 #endif 1852 } 1853 #if defined(FLUSH_ALL_TLBS) 1854 if (do_inval) { 1855 tlb_flush(CPU(cpu)); 1856 } 1857 #endif 1858 } 1859 } 1860 1861 void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) 1862 { 1863 #if !defined(FLUSH_ALL_TLBS) 1864 target_ulong mask; 1865 #else 1866 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1867 int do_inval; 1868 #endif 1869 1870 dump_store_bat(env, 'I', 1, nr, value); 1871 if (env->IBAT[1][nr] != value) { 1872 #if defined(FLUSH_ALL_TLBS) 1873 do_inval = 0; 1874 #endif 1875 if (env->IBAT[1][nr] & 0x40) { 1876 #if !defined(FLUSH_ALL_TLBS) 1877 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL; 1878 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1879 #else 1880 do_inval = 1; 1881 #endif 1882 } 1883 if (value & 0x40) { 1884 #if !defined(FLUSH_ALL_TLBS) 1885 mask = (value << 17) & 0x0FFE0000UL; 1886 do_invalidate_BAT(env, env->IBAT[0][nr], mask); 1887 #else 1888 do_inval = 1; 1889 #endif 1890 } 1891 env->IBAT[1][nr] = value; 1892 env->DBAT[1][nr] = value; 1893 #if defined(FLUSH_ALL_TLBS) 1894 if (do_inval) { 1895 tlb_flush(CPU(cpu)); 1896 } 1897 #endif 1898 } 1899 } 1900 1901 /*****************************************************************************/ 1902 /* TLB management */ 1903 void ppc_tlb_invalidate_all(CPUPPCState *env) 1904 { 1905 PowerPCCPU *cpu = ppc_env_get_cpu(env); 1906 1907 switch (env->mmu_model) { 1908 case POWERPC_MMU_SOFT_6xx: 1909 case POWERPC_MMU_SOFT_74xx: 1910 ppc6xx_tlb_invalidate_all(env); 1911 break; 1912 case POWERPC_MMU_SOFT_4xx: 1913 case POWERPC_MMU_SOFT_4xx_Z: 1914 ppc4xx_tlb_invalidate_all(env); 1915 break; 1916 case POWERPC_MMU_REAL: 1917 cpu_abort(CPU(cpu), "No TLB for PowerPC 4xx in real mode\n"); 1918 break; 1919 case POWERPC_MMU_MPC8xx: 1920 /* XXX: TODO */ 1921 cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n"); 1922 break; 1923 case POWERPC_MMU_BOOKE: 1924 tlb_flush(CPU(cpu)); 1925 break; 1926 case POWERPC_MMU_BOOKE206: 1927 booke206_flush_tlb(env, -1, 0); 1928 break; 1929 case POWERPC_MMU_32B: 1930 case POWERPC_MMU_601: 1931 #if defined(TARGET_PPC64) 1932 case POWERPC_MMU_64B: 1933 case POWERPC_MMU_2_03: 1934 case POWERPC_MMU_2_06: 1935 case POWERPC_MMU_2_06a: 1936 case POWERPC_MMU_2_07: 1937 case POWERPC_MMU_2_07a: 1938 #endif /* defined(TARGET_PPC64) */ 1939 env->tlb_need_flush = 0; 1940 tlb_flush(CPU(cpu)); 1941 break; 1942 default: 1943 /* XXX: TODO */ 1944 cpu_abort(CPU(cpu), "Unknown MMU model %d\n", env->mmu_model); 1945 break; 1946 } 1947 } 1948 1949 void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) 1950 { 1951 #if !defined(FLUSH_ALL_TLBS) 1952 addr &= TARGET_PAGE_MASK; 1953 switch (env->mmu_model) { 1954 case POWERPC_MMU_SOFT_6xx: 1955 case POWERPC_MMU_SOFT_74xx: 1956 ppc6xx_tlb_invalidate_virt(env, addr, 0); 1957 if (env->id_tlbs == 1) { 1958 ppc6xx_tlb_invalidate_virt(env, addr, 1); 1959 } 1960 break; 1961 case POWERPC_MMU_32B: 1962 case POWERPC_MMU_601: 1963 /* Actual CPUs invalidate entire congruence classes based on the 1964 * geometry of their TLBs and some OSes take that into account, 1965 * we just mark the TLB to be flushed later (context synchronizing 1966 * event or sync instruction on 32-bit). 1967 */ 1968 env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; 1969 break; 1970 #if defined(TARGET_PPC64) 1971 case POWERPC_MMU_64B: 1972 case POWERPC_MMU_2_03: 1973 case POWERPC_MMU_2_06: 1974 case POWERPC_MMU_2_06a: 1975 case POWERPC_MMU_2_07: 1976 case POWERPC_MMU_2_07a: 1977 /* tlbie invalidate TLBs for all segments */ 1978 /* XXX: given the fact that there are too many segments to invalidate, 1979 * and we still don't have a tlb_flush_mask(env, n, mask) in QEMU, 1980 * we just invalidate all TLBs 1981 */ 1982 env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; 1983 break; 1984 #endif /* defined(TARGET_PPC64) */ 1985 default: 1986 /* Should never reach here with other MMU models */ 1987 assert(0); 1988 } 1989 #else 1990 ppc_tlb_invalidate_all(env); 1991 #endif 1992 } 1993 1994 /*****************************************************************************/ 1995 /* Special registers manipulation */ 1996 void ppc_store_sdr1(CPUPPCState *env, target_ulong value) 1997 { 1998 qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value); 1999 assert(!env->external_htab); 2000 env->spr[SPR_SDR1] = value; 2001 #if defined(TARGET_PPC64) 2002 if (env->mmu_model & POWERPC_MMU_64) { 2003 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2004 Error *local_err = NULL; 2005 2006 ppc_hash64_set_sdr1(cpu, value, &local_err); 2007 if (local_err) { 2008 error_report_err(local_err); 2009 error_free(local_err); 2010 } 2011 } else 2012 #endif /* defined(TARGET_PPC64) */ 2013 { 2014 /* FIXME: Should check for valid HTABMASK values */ 2015 env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF; 2016 env->htab_base = value & SDR_32_HTABORG; 2017 } 2018 } 2019 2020 /* Segment registers load and store */ 2021 target_ulong helper_load_sr(CPUPPCState *env, target_ulong sr_num) 2022 { 2023 #if defined(TARGET_PPC64) 2024 if (env->mmu_model & POWERPC_MMU_64) { 2025 /* XXX */ 2026 return 0; 2027 } 2028 #endif 2029 return env->sr[sr_num]; 2030 } 2031 2032 void helper_store_sr(CPUPPCState *env, target_ulong srnum, target_ulong value) 2033 { 2034 qemu_log_mask(CPU_LOG_MMU, 2035 "%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__, 2036 (int)srnum, value, env->sr[srnum]); 2037 #if defined(TARGET_PPC64) 2038 if (env->mmu_model & POWERPC_MMU_64) { 2039 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2040 uint64_t esid, vsid; 2041 2042 /* ESID = srnum */ 2043 esid = ((uint64_t)(srnum & 0xf) << 28) | SLB_ESID_V; 2044 2045 /* VSID = VSID */ 2046 vsid = (value & 0xfffffff) << 12; 2047 /* flags = flags */ 2048 vsid |= ((value >> 27) & 0xf) << 8; 2049 2050 ppc_store_slb(cpu, srnum, esid, vsid); 2051 } else 2052 #endif 2053 if (env->sr[srnum] != value) { 2054 env->sr[srnum] = value; 2055 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than 2056 flusing the whole TLB. */ 2057 #if !defined(FLUSH_ALL_TLBS) && 0 2058 { 2059 target_ulong page, end; 2060 /* Invalidate 256 MB of virtual memory */ 2061 page = (16 << 20) * srnum; 2062 end = page + (16 << 20); 2063 for (; page != end; page += TARGET_PAGE_SIZE) { 2064 tlb_flush_page(CPU(cpu), page); 2065 } 2066 } 2067 #else 2068 env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; 2069 #endif 2070 } 2071 } 2072 2073 /* TLB management */ 2074 void helper_tlbia(CPUPPCState *env) 2075 { 2076 ppc_tlb_invalidate_all(env); 2077 } 2078 2079 void helper_tlbie(CPUPPCState *env, target_ulong addr) 2080 { 2081 ppc_tlb_invalidate_one(env, addr); 2082 } 2083 2084 void helper_tlbiva(CPUPPCState *env, target_ulong addr) 2085 { 2086 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2087 2088 /* tlbiva instruction only exists on BookE */ 2089 assert(env->mmu_model == POWERPC_MMU_BOOKE); 2090 /* XXX: TODO */ 2091 cpu_abort(CPU(cpu), "BookE MMU model is not implemented\n"); 2092 } 2093 2094 /* Software driven TLBs management */ 2095 /* PowerPC 602/603 software TLB load instructions helpers */ 2096 static void do_6xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code) 2097 { 2098 target_ulong RPN, CMP, EPN; 2099 int way; 2100 2101 RPN = env->spr[SPR_RPA]; 2102 if (is_code) { 2103 CMP = env->spr[SPR_ICMP]; 2104 EPN = env->spr[SPR_IMISS]; 2105 } else { 2106 CMP = env->spr[SPR_DCMP]; 2107 EPN = env->spr[SPR_DMISS]; 2108 } 2109 way = (env->spr[SPR_SRR1] >> 17) & 1; 2110 (void)EPN; /* avoid a compiler warning */ 2111 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx 2112 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP, 2113 RPN, way); 2114 /* Store this TLB */ 2115 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK), 2116 way, is_code, CMP, RPN); 2117 } 2118 2119 void helper_6xx_tlbd(CPUPPCState *env, target_ulong EPN) 2120 { 2121 do_6xx_tlb(env, EPN, 0); 2122 } 2123 2124 void helper_6xx_tlbi(CPUPPCState *env, target_ulong EPN) 2125 { 2126 do_6xx_tlb(env, EPN, 1); 2127 } 2128 2129 /* PowerPC 74xx software TLB load instructions helpers */ 2130 static void do_74xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code) 2131 { 2132 target_ulong RPN, CMP, EPN; 2133 int way; 2134 2135 RPN = env->spr[SPR_PTELO]; 2136 CMP = env->spr[SPR_PTEHI]; 2137 EPN = env->spr[SPR_TLBMISS] & ~0x3; 2138 way = env->spr[SPR_TLBMISS] & 0x3; 2139 (void)EPN; /* avoid a compiler warning */ 2140 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx 2141 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP, 2142 RPN, way); 2143 /* Store this TLB */ 2144 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK), 2145 way, is_code, CMP, RPN); 2146 } 2147 2148 void helper_74xx_tlbd(CPUPPCState *env, target_ulong EPN) 2149 { 2150 do_74xx_tlb(env, EPN, 0); 2151 } 2152 2153 void helper_74xx_tlbi(CPUPPCState *env, target_ulong EPN) 2154 { 2155 do_74xx_tlb(env, EPN, 1); 2156 } 2157 2158 /*****************************************************************************/ 2159 /* PowerPC 601 specific instructions (POWER bridge) */ 2160 2161 target_ulong helper_rac(CPUPPCState *env, target_ulong addr) 2162 { 2163 mmu_ctx_t ctx; 2164 int nb_BATs; 2165 target_ulong ret = 0; 2166 2167 /* We don't have to generate many instances of this instruction, 2168 * as rac is supervisor only. 2169 */ 2170 /* XXX: FIX THIS: Pretend we have no BAT */ 2171 nb_BATs = env->nb_BATs; 2172 env->nb_BATs = 0; 2173 if (get_physical_address(env, &ctx, addr, 0, ACCESS_INT) == 0) { 2174 ret = ctx.raddr; 2175 } 2176 env->nb_BATs = nb_BATs; 2177 return ret; 2178 } 2179 2180 static inline target_ulong booke_tlb_to_page_size(int size) 2181 { 2182 return 1024 << (2 * size); 2183 } 2184 2185 static inline int booke_page_size_to_tlb(target_ulong page_size) 2186 { 2187 int size; 2188 2189 switch (page_size) { 2190 case 0x00000400UL: 2191 size = 0x0; 2192 break; 2193 case 0x00001000UL: 2194 size = 0x1; 2195 break; 2196 case 0x00004000UL: 2197 size = 0x2; 2198 break; 2199 case 0x00010000UL: 2200 size = 0x3; 2201 break; 2202 case 0x00040000UL: 2203 size = 0x4; 2204 break; 2205 case 0x00100000UL: 2206 size = 0x5; 2207 break; 2208 case 0x00400000UL: 2209 size = 0x6; 2210 break; 2211 case 0x01000000UL: 2212 size = 0x7; 2213 break; 2214 case 0x04000000UL: 2215 size = 0x8; 2216 break; 2217 case 0x10000000UL: 2218 size = 0x9; 2219 break; 2220 case 0x40000000UL: 2221 size = 0xA; 2222 break; 2223 #if defined(TARGET_PPC64) 2224 case 0x000100000000ULL: 2225 size = 0xB; 2226 break; 2227 case 0x000400000000ULL: 2228 size = 0xC; 2229 break; 2230 case 0x001000000000ULL: 2231 size = 0xD; 2232 break; 2233 case 0x004000000000ULL: 2234 size = 0xE; 2235 break; 2236 case 0x010000000000ULL: 2237 size = 0xF; 2238 break; 2239 #endif 2240 default: 2241 size = -1; 2242 break; 2243 } 2244 2245 return size; 2246 } 2247 2248 /* Helpers for 4xx TLB management */ 2249 #define PPC4XX_TLB_ENTRY_MASK 0x0000003f /* Mask for 64 TLB entries */ 2250 2251 #define PPC4XX_TLBHI_V 0x00000040 2252 #define PPC4XX_TLBHI_E 0x00000020 2253 #define PPC4XX_TLBHI_SIZE_MIN 0 2254 #define PPC4XX_TLBHI_SIZE_MAX 7 2255 #define PPC4XX_TLBHI_SIZE_DEFAULT 1 2256 #define PPC4XX_TLBHI_SIZE_SHIFT 7 2257 #define PPC4XX_TLBHI_SIZE_MASK 0x00000007 2258 2259 #define PPC4XX_TLBLO_EX 0x00000200 2260 #define PPC4XX_TLBLO_WR 0x00000100 2261 #define PPC4XX_TLBLO_ATTR_MASK 0x000000FF 2262 #define PPC4XX_TLBLO_RPN_MASK 0xFFFFFC00 2263 2264 target_ulong helper_4xx_tlbre_hi(CPUPPCState *env, target_ulong entry) 2265 { 2266 ppcemb_tlb_t *tlb; 2267 target_ulong ret; 2268 int size; 2269 2270 entry &= PPC4XX_TLB_ENTRY_MASK; 2271 tlb = &env->tlb.tlbe[entry]; 2272 ret = tlb->EPN; 2273 if (tlb->prot & PAGE_VALID) { 2274 ret |= PPC4XX_TLBHI_V; 2275 } 2276 size = booke_page_size_to_tlb(tlb->size); 2277 if (size < PPC4XX_TLBHI_SIZE_MIN || size > PPC4XX_TLBHI_SIZE_MAX) { 2278 size = PPC4XX_TLBHI_SIZE_DEFAULT; 2279 } 2280 ret |= size << PPC4XX_TLBHI_SIZE_SHIFT; 2281 env->spr[SPR_40x_PID] = tlb->PID; 2282 return ret; 2283 } 2284 2285 target_ulong helper_4xx_tlbre_lo(CPUPPCState *env, target_ulong entry) 2286 { 2287 ppcemb_tlb_t *tlb; 2288 target_ulong ret; 2289 2290 entry &= PPC4XX_TLB_ENTRY_MASK; 2291 tlb = &env->tlb.tlbe[entry]; 2292 ret = tlb->RPN; 2293 if (tlb->prot & PAGE_EXEC) { 2294 ret |= PPC4XX_TLBLO_EX; 2295 } 2296 if (tlb->prot & PAGE_WRITE) { 2297 ret |= PPC4XX_TLBLO_WR; 2298 } 2299 return ret; 2300 } 2301 2302 void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry, 2303 target_ulong val) 2304 { 2305 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2306 CPUState *cs = CPU(cpu); 2307 ppcemb_tlb_t *tlb; 2308 target_ulong page, end; 2309 2310 LOG_SWTLB("%s entry %d val " TARGET_FMT_lx "\n", __func__, (int)entry, 2311 val); 2312 entry &= PPC4XX_TLB_ENTRY_MASK; 2313 tlb = &env->tlb.tlbe[entry]; 2314 /* Invalidate previous TLB (if it's valid) */ 2315 if (tlb->prot & PAGE_VALID) { 2316 end = tlb->EPN + tlb->size; 2317 LOG_SWTLB("%s: invalidate old TLB %d start " TARGET_FMT_lx " end " 2318 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end); 2319 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) { 2320 tlb_flush_page(cs, page); 2321 } 2322 } 2323 tlb->size = booke_tlb_to_page_size((val >> PPC4XX_TLBHI_SIZE_SHIFT) 2324 & PPC4XX_TLBHI_SIZE_MASK); 2325 /* We cannot handle TLB size < TARGET_PAGE_SIZE. 2326 * If this ever occurs, one should use the ppcemb target instead 2327 * of the ppc or ppc64 one 2328 */ 2329 if ((val & PPC4XX_TLBHI_V) && tlb->size < TARGET_PAGE_SIZE) { 2330 cpu_abort(cs, "TLB size " TARGET_FMT_lu " < %u " 2331 "are not supported (%d)\n", 2332 tlb->size, TARGET_PAGE_SIZE, (int)((val >> 7) & 0x7)); 2333 } 2334 tlb->EPN = val & ~(tlb->size - 1); 2335 if (val & PPC4XX_TLBHI_V) { 2336 tlb->prot |= PAGE_VALID; 2337 if (val & PPC4XX_TLBHI_E) { 2338 /* XXX: TO BE FIXED */ 2339 cpu_abort(cs, 2340 "Little-endian TLB entries are not supported by now\n"); 2341 } 2342 } else { 2343 tlb->prot &= ~PAGE_VALID; 2344 } 2345 tlb->PID = env->spr[SPR_40x_PID]; /* PID */ 2346 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx 2347 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__, 2348 (int)entry, tlb->RPN, tlb->EPN, tlb->size, 2349 tlb->prot & PAGE_READ ? 'r' : '-', 2350 tlb->prot & PAGE_WRITE ? 'w' : '-', 2351 tlb->prot & PAGE_EXEC ? 'x' : '-', 2352 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID); 2353 /* Invalidate new TLB (if valid) */ 2354 if (tlb->prot & PAGE_VALID) { 2355 end = tlb->EPN + tlb->size; 2356 LOG_SWTLB("%s: invalidate TLB %d start " TARGET_FMT_lx " end " 2357 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end); 2358 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) { 2359 tlb_flush_page(cs, page); 2360 } 2361 } 2362 } 2363 2364 void helper_4xx_tlbwe_lo(CPUPPCState *env, target_ulong entry, 2365 target_ulong val) 2366 { 2367 ppcemb_tlb_t *tlb; 2368 2369 LOG_SWTLB("%s entry %i val " TARGET_FMT_lx "\n", __func__, (int)entry, 2370 val); 2371 entry &= PPC4XX_TLB_ENTRY_MASK; 2372 tlb = &env->tlb.tlbe[entry]; 2373 tlb->attr = val & PPC4XX_TLBLO_ATTR_MASK; 2374 tlb->RPN = val & PPC4XX_TLBLO_RPN_MASK; 2375 tlb->prot = PAGE_READ; 2376 if (val & PPC4XX_TLBLO_EX) { 2377 tlb->prot |= PAGE_EXEC; 2378 } 2379 if (val & PPC4XX_TLBLO_WR) { 2380 tlb->prot |= PAGE_WRITE; 2381 } 2382 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx 2383 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__, 2384 (int)entry, tlb->RPN, tlb->EPN, tlb->size, 2385 tlb->prot & PAGE_READ ? 'r' : '-', 2386 tlb->prot & PAGE_WRITE ? 'w' : '-', 2387 tlb->prot & PAGE_EXEC ? 'x' : '-', 2388 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID); 2389 } 2390 2391 target_ulong helper_4xx_tlbsx(CPUPPCState *env, target_ulong address) 2392 { 2393 return ppcemb_tlb_search(env, address, env->spr[SPR_40x_PID]); 2394 } 2395 2396 /* PowerPC 440 TLB management */ 2397 void helper_440_tlbwe(CPUPPCState *env, uint32_t word, target_ulong entry, 2398 target_ulong value) 2399 { 2400 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2401 ppcemb_tlb_t *tlb; 2402 target_ulong EPN, RPN, size; 2403 int do_flush_tlbs; 2404 2405 LOG_SWTLB("%s word %d entry %d value " TARGET_FMT_lx "\n", 2406 __func__, word, (int)entry, value); 2407 do_flush_tlbs = 0; 2408 entry &= 0x3F; 2409 tlb = &env->tlb.tlbe[entry]; 2410 switch (word) { 2411 default: 2412 /* Just here to please gcc */ 2413 case 0: 2414 EPN = value & 0xFFFFFC00; 2415 if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN) { 2416 do_flush_tlbs = 1; 2417 } 2418 tlb->EPN = EPN; 2419 size = booke_tlb_to_page_size((value >> 4) & 0xF); 2420 if ((tlb->prot & PAGE_VALID) && tlb->size < size) { 2421 do_flush_tlbs = 1; 2422 } 2423 tlb->size = size; 2424 tlb->attr &= ~0x1; 2425 tlb->attr |= (value >> 8) & 1; 2426 if (value & 0x200) { 2427 tlb->prot |= PAGE_VALID; 2428 } else { 2429 if (tlb->prot & PAGE_VALID) { 2430 tlb->prot &= ~PAGE_VALID; 2431 do_flush_tlbs = 1; 2432 } 2433 } 2434 tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF; 2435 if (do_flush_tlbs) { 2436 tlb_flush(CPU(cpu)); 2437 } 2438 break; 2439 case 1: 2440 RPN = value & 0xFFFFFC0F; 2441 if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN) { 2442 tlb_flush(CPU(cpu)); 2443 } 2444 tlb->RPN = RPN; 2445 break; 2446 case 2: 2447 tlb->attr = (tlb->attr & 0x1) | (value & 0x0000FF00); 2448 tlb->prot = tlb->prot & PAGE_VALID; 2449 if (value & 0x1) { 2450 tlb->prot |= PAGE_READ << 4; 2451 } 2452 if (value & 0x2) { 2453 tlb->prot |= PAGE_WRITE << 4; 2454 } 2455 if (value & 0x4) { 2456 tlb->prot |= PAGE_EXEC << 4; 2457 } 2458 if (value & 0x8) { 2459 tlb->prot |= PAGE_READ; 2460 } 2461 if (value & 0x10) { 2462 tlb->prot |= PAGE_WRITE; 2463 } 2464 if (value & 0x20) { 2465 tlb->prot |= PAGE_EXEC; 2466 } 2467 break; 2468 } 2469 } 2470 2471 target_ulong helper_440_tlbre(CPUPPCState *env, uint32_t word, 2472 target_ulong entry) 2473 { 2474 ppcemb_tlb_t *tlb; 2475 target_ulong ret; 2476 int size; 2477 2478 entry &= 0x3F; 2479 tlb = &env->tlb.tlbe[entry]; 2480 switch (word) { 2481 default: 2482 /* Just here to please gcc */ 2483 case 0: 2484 ret = tlb->EPN; 2485 size = booke_page_size_to_tlb(tlb->size); 2486 if (size < 0 || size > 0xF) { 2487 size = 1; 2488 } 2489 ret |= size << 4; 2490 if (tlb->attr & 0x1) { 2491 ret |= 0x100; 2492 } 2493 if (tlb->prot & PAGE_VALID) { 2494 ret |= 0x200; 2495 } 2496 env->spr[SPR_440_MMUCR] &= ~0x000000FF; 2497 env->spr[SPR_440_MMUCR] |= tlb->PID; 2498 break; 2499 case 1: 2500 ret = tlb->RPN; 2501 break; 2502 case 2: 2503 ret = tlb->attr & ~0x1; 2504 if (tlb->prot & (PAGE_READ << 4)) { 2505 ret |= 0x1; 2506 } 2507 if (tlb->prot & (PAGE_WRITE << 4)) { 2508 ret |= 0x2; 2509 } 2510 if (tlb->prot & (PAGE_EXEC << 4)) { 2511 ret |= 0x4; 2512 } 2513 if (tlb->prot & PAGE_READ) { 2514 ret |= 0x8; 2515 } 2516 if (tlb->prot & PAGE_WRITE) { 2517 ret |= 0x10; 2518 } 2519 if (tlb->prot & PAGE_EXEC) { 2520 ret |= 0x20; 2521 } 2522 break; 2523 } 2524 return ret; 2525 } 2526 2527 target_ulong helper_440_tlbsx(CPUPPCState *env, target_ulong address) 2528 { 2529 return ppcemb_tlb_search(env, address, env->spr[SPR_440_MMUCR] & 0xFF); 2530 } 2531 2532 /* PowerPC BookE 2.06 TLB management */ 2533 2534 static ppcmas_tlb_t *booke206_cur_tlb(CPUPPCState *env) 2535 { 2536 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2537 uint32_t tlbncfg = 0; 2538 int esel = (env->spr[SPR_BOOKE_MAS0] & MAS0_ESEL_MASK) >> MAS0_ESEL_SHIFT; 2539 int ea = (env->spr[SPR_BOOKE_MAS2] & MAS2_EPN_MASK); 2540 int tlb; 2541 2542 tlb = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT; 2543 tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlb]; 2544 2545 if ((tlbncfg & TLBnCFG_HES) && (env->spr[SPR_BOOKE_MAS0] & MAS0_HES)) { 2546 cpu_abort(CPU(cpu), "we don't support HES yet\n"); 2547 } 2548 2549 return booke206_get_tlbm(env, tlb, ea, esel); 2550 } 2551 2552 void helper_booke_setpid(CPUPPCState *env, uint32_t pidn, target_ulong pid) 2553 { 2554 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2555 2556 env->spr[pidn] = pid; 2557 /* changing PIDs mean we're in a different address space now */ 2558 tlb_flush(CPU(cpu)); 2559 } 2560 2561 void helper_booke206_tlbwe(CPUPPCState *env) 2562 { 2563 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2564 uint32_t tlbncfg, tlbn; 2565 ppcmas_tlb_t *tlb; 2566 uint32_t size_tlb, size_ps; 2567 target_ulong mask; 2568 2569 2570 switch (env->spr[SPR_BOOKE_MAS0] & MAS0_WQ_MASK) { 2571 case MAS0_WQ_ALWAYS: 2572 /* good to go, write that entry */ 2573 break; 2574 case MAS0_WQ_COND: 2575 /* XXX check if reserved */ 2576 if (0) { 2577 return; 2578 } 2579 break; 2580 case MAS0_WQ_CLR_RSRV: 2581 /* XXX clear entry */ 2582 return; 2583 default: 2584 /* no idea what to do */ 2585 return; 2586 } 2587 2588 if (((env->spr[SPR_BOOKE_MAS0] & MAS0_ATSEL) == MAS0_ATSEL_LRAT) && 2589 !msr_gs) { 2590 /* XXX we don't support direct LRAT setting yet */ 2591 fprintf(stderr, "cpu: don't support LRAT setting yet\n"); 2592 return; 2593 } 2594 2595 tlbn = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT; 2596 tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn]; 2597 2598 tlb = booke206_cur_tlb(env); 2599 2600 if (!tlb) { 2601 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 2602 POWERPC_EXCP_INVAL | 2603 POWERPC_EXCP_INVAL_INVAL, GETPC()); 2604 } 2605 2606 /* check that we support the targeted size */ 2607 size_tlb = (env->spr[SPR_BOOKE_MAS1] & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; 2608 size_ps = booke206_tlbnps(env, tlbn); 2609 if ((env->spr[SPR_BOOKE_MAS1] & MAS1_VALID) && (tlbncfg & TLBnCFG_AVAIL) && 2610 !(size_ps & (1 << size_tlb))) { 2611 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 2612 POWERPC_EXCP_INVAL | 2613 POWERPC_EXCP_INVAL_INVAL, GETPC()); 2614 } 2615 2616 if (msr_gs) { 2617 cpu_abort(CPU(cpu), "missing HV implementation\n"); 2618 } 2619 tlb->mas7_3 = ((uint64_t)env->spr[SPR_BOOKE_MAS7] << 32) | 2620 env->spr[SPR_BOOKE_MAS3]; 2621 tlb->mas1 = env->spr[SPR_BOOKE_MAS1]; 2622 2623 /* MAV 1.0 only */ 2624 if (!(tlbncfg & TLBnCFG_AVAIL)) { 2625 /* force !AVAIL TLB entries to correct page size */ 2626 tlb->mas1 &= ~MAS1_TSIZE_MASK; 2627 /* XXX can be configured in MMUCSR0 */ 2628 tlb->mas1 |= (tlbncfg & TLBnCFG_MINSIZE) >> 12; 2629 } 2630 2631 /* Make a mask from TLB size to discard invalid bits in EPN field */ 2632 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); 2633 /* Add a mask for page attributes */ 2634 mask |= MAS2_ACM | MAS2_VLE | MAS2_W | MAS2_I | MAS2_M | MAS2_G | MAS2_E; 2635 2636 if (!msr_cm) { 2637 /* Executing a tlbwe instruction in 32-bit mode will set 2638 * bits 0:31 of the TLB EPN field to zero. 2639 */ 2640 mask &= 0xffffffff; 2641 } 2642 2643 tlb->mas2 = env->spr[SPR_BOOKE_MAS2] & mask; 2644 2645 if (!(tlbncfg & TLBnCFG_IPROT)) { 2646 /* no IPROT supported by TLB */ 2647 tlb->mas1 &= ~MAS1_IPROT; 2648 } 2649 2650 if (booke206_tlb_to_page_size(env, tlb) == TARGET_PAGE_SIZE) { 2651 tlb_flush_page(CPU(cpu), tlb->mas2 & MAS2_EPN_MASK); 2652 } else { 2653 tlb_flush(CPU(cpu)); 2654 } 2655 } 2656 2657 static inline void booke206_tlb_to_mas(CPUPPCState *env, ppcmas_tlb_t *tlb) 2658 { 2659 int tlbn = booke206_tlbm_to_tlbn(env, tlb); 2660 int way = booke206_tlbm_to_way(env, tlb); 2661 2662 env->spr[SPR_BOOKE_MAS0] = tlbn << MAS0_TLBSEL_SHIFT; 2663 env->spr[SPR_BOOKE_MAS0] |= way << MAS0_ESEL_SHIFT; 2664 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; 2665 2666 env->spr[SPR_BOOKE_MAS1] = tlb->mas1; 2667 env->spr[SPR_BOOKE_MAS2] = tlb->mas2; 2668 env->spr[SPR_BOOKE_MAS3] = tlb->mas7_3; 2669 env->spr[SPR_BOOKE_MAS7] = tlb->mas7_3 >> 32; 2670 } 2671 2672 void helper_booke206_tlbre(CPUPPCState *env) 2673 { 2674 ppcmas_tlb_t *tlb = NULL; 2675 2676 tlb = booke206_cur_tlb(env); 2677 if (!tlb) { 2678 env->spr[SPR_BOOKE_MAS1] = 0; 2679 } else { 2680 booke206_tlb_to_mas(env, tlb); 2681 } 2682 } 2683 2684 void helper_booke206_tlbsx(CPUPPCState *env, target_ulong address) 2685 { 2686 ppcmas_tlb_t *tlb = NULL; 2687 int i, j; 2688 hwaddr raddr; 2689 uint32_t spid, sas; 2690 2691 spid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID_MASK) >> MAS6_SPID_SHIFT; 2692 sas = env->spr[SPR_BOOKE_MAS6] & MAS6_SAS; 2693 2694 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 2695 int ways = booke206_tlb_ways(env, i); 2696 2697 for (j = 0; j < ways; j++) { 2698 tlb = booke206_get_tlbm(env, i, address, j); 2699 2700 if (!tlb) { 2701 continue; 2702 } 2703 2704 if (ppcmas_tlb_check(env, tlb, &raddr, address, spid)) { 2705 continue; 2706 } 2707 2708 if (sas != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { 2709 continue; 2710 } 2711 2712 booke206_tlb_to_mas(env, tlb); 2713 return; 2714 } 2715 } 2716 2717 /* no entry found, fill with defaults */ 2718 env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; 2719 env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; 2720 env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; 2721 env->spr[SPR_BOOKE_MAS3] = 0; 2722 env->spr[SPR_BOOKE_MAS7] = 0; 2723 2724 if (env->spr[SPR_BOOKE_MAS6] & MAS6_SAS) { 2725 env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; 2726 } 2727 2728 env->spr[SPR_BOOKE_MAS1] |= (env->spr[SPR_BOOKE_MAS6] >> 16) 2729 << MAS1_TID_SHIFT; 2730 2731 /* next victim logic */ 2732 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; 2733 env->last_way++; 2734 env->last_way &= booke206_tlb_ways(env, 0) - 1; 2735 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; 2736 } 2737 2738 static inline void booke206_invalidate_ea_tlb(CPUPPCState *env, int tlbn, 2739 uint32_t ea) 2740 { 2741 int i; 2742 int ways = booke206_tlb_ways(env, tlbn); 2743 target_ulong mask; 2744 2745 for (i = 0; i < ways; i++) { 2746 ppcmas_tlb_t *tlb = booke206_get_tlbm(env, tlbn, ea, i); 2747 if (!tlb) { 2748 continue; 2749 } 2750 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); 2751 if (((tlb->mas2 & MAS2_EPN_MASK) == (ea & mask)) && 2752 !(tlb->mas1 & MAS1_IPROT)) { 2753 tlb->mas1 &= ~MAS1_VALID; 2754 } 2755 } 2756 } 2757 2758 void helper_booke206_tlbivax(CPUPPCState *env, target_ulong address) 2759 { 2760 CPUState *cs; 2761 2762 if (address & 0x4) { 2763 /* flush all entries */ 2764 if (address & 0x8) { 2765 /* flush all of TLB1 */ 2766 booke206_flush_tlb(env, BOOKE206_FLUSH_TLB1, 1); 2767 } else { 2768 /* flush all of TLB0 */ 2769 booke206_flush_tlb(env, BOOKE206_FLUSH_TLB0, 0); 2770 } 2771 return; 2772 } 2773 2774 if (address & 0x8) { 2775 /* flush TLB1 entries */ 2776 booke206_invalidate_ea_tlb(env, 1, address); 2777 CPU_FOREACH(cs) { 2778 tlb_flush(cs); 2779 } 2780 } else { 2781 /* flush TLB0 entries */ 2782 booke206_invalidate_ea_tlb(env, 0, address); 2783 CPU_FOREACH(cs) { 2784 tlb_flush_page(cs, address & MAS2_EPN_MASK); 2785 } 2786 } 2787 } 2788 2789 void helper_booke206_tlbilx0(CPUPPCState *env, target_ulong address) 2790 { 2791 /* XXX missing LPID handling */ 2792 booke206_flush_tlb(env, -1, 1); 2793 } 2794 2795 void helper_booke206_tlbilx1(CPUPPCState *env, target_ulong address) 2796 { 2797 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2798 int i, j; 2799 int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID); 2800 ppcmas_tlb_t *tlb = env->tlb.tlbm; 2801 int tlb_size; 2802 2803 /* XXX missing LPID handling */ 2804 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 2805 tlb_size = booke206_tlb_size(env, i); 2806 for (j = 0; j < tlb_size; j++) { 2807 if (!(tlb[j].mas1 & MAS1_IPROT) && 2808 ((tlb[j].mas1 & MAS1_TID_MASK) == tid)) { 2809 tlb[j].mas1 &= ~MAS1_VALID; 2810 } 2811 } 2812 tlb += booke206_tlb_size(env, i); 2813 } 2814 tlb_flush(CPU(cpu)); 2815 } 2816 2817 void helper_booke206_tlbilx3(CPUPPCState *env, target_ulong address) 2818 { 2819 PowerPCCPU *cpu = ppc_env_get_cpu(env); 2820 int i, j; 2821 ppcmas_tlb_t *tlb; 2822 int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID); 2823 int pid = tid >> MAS6_SPID_SHIFT; 2824 int sgs = env->spr[SPR_BOOKE_MAS5] & MAS5_SGS; 2825 int ind = (env->spr[SPR_BOOKE_MAS6] & MAS6_SIND) ? MAS1_IND : 0; 2826 /* XXX check for unsupported isize and raise an invalid opcode then */ 2827 int size = env->spr[SPR_BOOKE_MAS6] & MAS6_ISIZE_MASK; 2828 /* XXX implement MAV2 handling */ 2829 bool mav2 = false; 2830 2831 /* XXX missing LPID handling */ 2832 /* flush by pid and ea */ 2833 for (i = 0; i < BOOKE206_MAX_TLBN; i++) { 2834 int ways = booke206_tlb_ways(env, i); 2835 2836 for (j = 0; j < ways; j++) { 2837 tlb = booke206_get_tlbm(env, i, address, j); 2838 if (!tlb) { 2839 continue; 2840 } 2841 if ((ppcmas_tlb_check(env, tlb, NULL, address, pid) != 0) || 2842 (tlb->mas1 & MAS1_IPROT) || 2843 ((tlb->mas1 & MAS1_IND) != ind) || 2844 ((tlb->mas8 & MAS8_TGS) != sgs)) { 2845 continue; 2846 } 2847 if (mav2 && ((tlb->mas1 & MAS1_TSIZE_MASK) != size)) { 2848 /* XXX only check when MMUCFG[TWC] || TLBnCFG[HES] */ 2849 continue; 2850 } 2851 /* XXX e500mc doesn't match SAS, but other cores might */ 2852 tlb->mas1 &= ~MAS1_VALID; 2853 } 2854 } 2855 tlb_flush(CPU(cpu)); 2856 } 2857 2858 void helper_booke206_tlbflush(CPUPPCState *env, target_ulong type) 2859 { 2860 int flags = 0; 2861 2862 if (type & 2) { 2863 flags |= BOOKE206_FLUSH_TLB1; 2864 } 2865 2866 if (type & 4) { 2867 flags |= BOOKE206_FLUSH_TLB0; 2868 } 2869 2870 booke206_flush_tlb(env, flags, 1); 2871 } 2872 2873 2874 void helper_check_tlb_flush_local(CPUPPCState *env) 2875 { 2876 check_tlb_flush(env, false); 2877 } 2878 2879 void helper_check_tlb_flush_global(CPUPPCState *env) 2880 { 2881 check_tlb_flush(env, true); 2882 } 2883 2884 /*****************************************************************************/ 2885 2886 /* try to fill the TLB and return an exception if error. If retaddr is 2887 NULL, it means that the function was called in C code (i.e. not 2888 from generated code or from helper.c) */ 2889 /* XXX: fix it to restore all registers */ 2890 void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type, 2891 int mmu_idx, uintptr_t retaddr) 2892 { 2893 PowerPCCPU *cpu = POWERPC_CPU(cs); 2894 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); 2895 CPUPPCState *env = &cpu->env; 2896 int ret; 2897 2898 if (pcc->handle_mmu_fault) { 2899 ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); 2900 } else { 2901 ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); 2902 } 2903 if (unlikely(ret != 0)) { 2904 raise_exception_err_ra(env, cs->exception_index, env->error_code, 2905 retaddr); 2906 } 2907 } 2908