tlb.cc revision 10474:799c8ee4ecba
1/* 2 * Copyright (c) 2001-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Ali Saidi 29 */ 30 31#include <cstring> 32 33#include "arch/sparc/asi.hh" 34#include "arch/sparc/faults.hh" 35#include "arch/sparc/registers.hh" 36#include "arch/sparc/tlb.hh" 37#include "base/bitfield.hh" 38#include "base/trace.hh" 39#include "cpu/base.hh" 40#include "cpu/thread_context.hh" 41#include "debug/IPR.hh" 42#include "debug/TLB.hh" 43#include "mem/packet_access.hh" 44#include "mem/request.hh" 45#include "sim/full_system.hh" 46#include "sim/system.hh" 47 48/* @todo remove some of the magic constants. -- ali 49 * */ 50namespace SparcISA { 51 52TLB::TLB(const Params *p) 53 : BaseTLB(p), size(p->size), usedEntries(0), lastReplaced(0), 54 cacheState(0), cacheValid(false) 55{ 56 // To make this work you'll have to change the hypervisor and OS 57 if (size > 64) 58 fatal("SPARC T1 TLB registers don't support more than 64 TLB entries"); 59 60 tlb = new TlbEntry[size]; 61 std::memset(tlb, 0, sizeof(TlbEntry) * size); 62 63 for (int x = 0; x < size; x++) 64 freeList.push_back(&tlb[x]); 65 66 c0_tsb_ps0 = 0; 67 c0_tsb_ps1 = 0; 68 c0_config = 0; 69 cx_tsb_ps0 = 0; 70 cx_tsb_ps1 = 0; 71 cx_config = 0; 72 sfsr = 0; 73 tag_access = 0; 74 sfar = 0; 75 cacheEntry[0] = NULL; 76 cacheEntry[1] = NULL; 77} 78 79void 80TLB::clearUsedBits() 81{ 82 MapIter i; 83 for (i = lookupTable.begin(); i != lookupTable.end(); i++) { 84 TlbEntry *t = i->second; 85 if (!t->pte.locked()) { 86 t->used = false; 87 usedEntries--; 88 } 89 } 90} 91 92 93void 94TLB::insert(Addr va, int partition_id, int context_id, bool real, 95 const PageTableEntry& PTE, int entry) 96{ 97 MapIter i; 98 TlbEntry *new_entry = NULL; 99// TlbRange tr; 100 int x; 101 102 cacheValid = false; 103 va &= ~(PTE.size()-1); 104 /* tr.va = va; 105 tr.size = PTE.size() - 1; 106 tr.contextId = context_id; 107 tr.partitionId = partition_id; 108 tr.real = real; 109*/ 110 111 DPRINTF(TLB, 112 "TLB: Inserting Entry; va=%#x pa=%#x pid=%d cid=%d r=%d entryid=%d\n", 113 va, PTE.paddr(), partition_id, context_id, (int)real, entry); 114 115 // Demap any entry that conflicts 116 for (x = 0; x < size; x++) { 117 if (tlb[x].range.real == real && 118 tlb[x].range.partitionId == partition_id && 119 tlb[x].range.va < va + PTE.size() - 1 && 120 tlb[x].range.va + tlb[x].range.size >= va && 121 (real || tlb[x].range.contextId == context_id )) 122 { 123 if (tlb[x].valid) { 124 freeList.push_front(&tlb[x]); 125 DPRINTF(TLB, "TLB: Conflicting entry %#X , deleting it\n", x); 126 127 tlb[x].valid = false; 128 if (tlb[x].used) { 129 tlb[x].used = false; 130 usedEntries--; 131 } 132 lookupTable.erase(tlb[x].range); 133 } 134 } 135 } 136 137 if (entry != -1) { 138 assert(entry < size && entry >= 0); 139 new_entry = &tlb[entry]; 140 } else { 141 if (!freeList.empty()) { 142 new_entry = freeList.front(); 143 } else { 144 x = lastReplaced; 145 do { 146 ++x; 147 if (x == size) 148 x = 0; 149 if (x == lastReplaced) 150 goto insertAllLocked; 151 } while (tlb[x].pte.locked()); 152 lastReplaced = x; 153 new_entry = &tlb[x]; 154 } 155 } 156 157insertAllLocked: 158 // Update the last ently if their all locked 159 if (!new_entry) { 160 new_entry = &tlb[size-1]; 161 } 162 163 freeList.remove(new_entry); 164 if (new_entry->valid && new_entry->used) 165 usedEntries--; 166 if (new_entry->valid) 167 lookupTable.erase(new_entry->range); 168 169 170 assert(PTE.valid()); 171 new_entry->range.va = va; 172 new_entry->range.size = PTE.size() - 1; 173 new_entry->range.partitionId = partition_id; 174 new_entry->range.contextId = context_id; 175 new_entry->range.real = real; 176 new_entry->pte = PTE; 177 new_entry->used = true;; 178 new_entry->valid = true; 179 usedEntries++; 180 181 i = lookupTable.insert(new_entry->range, new_entry); 182 assert(i != lookupTable.end()); 183 184 // If all entries have their used bit set, clear it on them all, 185 // but the one we just inserted 186 if (usedEntries == size) { 187 clearUsedBits(); 188 new_entry->used = true; 189 usedEntries++; 190 } 191} 192 193 194TlbEntry* 195TLB::lookup(Addr va, int partition_id, bool real, int context_id, 196 bool update_used) 197{ 198 MapIter i; 199 TlbRange tr; 200 TlbEntry *t; 201 202 DPRINTF(TLB, "TLB: Looking up entry va=%#x pid=%d cid=%d r=%d\n", 203 va, partition_id, context_id, real); 204 // Assemble full address structure 205 tr.va = va; 206 tr.size = 1; 207 tr.contextId = context_id; 208 tr.partitionId = partition_id; 209 tr.real = real; 210 211 // Try to find the entry 212 i = lookupTable.find(tr); 213 if (i == lookupTable.end()) { 214 DPRINTF(TLB, "TLB: No valid entry found\n"); 215 return NULL; 216 } 217 218 // Mark the entries used bit and clear other used bits in needed 219 t = i->second; 220 DPRINTF(TLB, "TLB: Valid entry found pa: %#x size: %#x\n", t->pte.paddr(), 221 t->pte.size()); 222 223 // Update the used bits only if this is a real access (not a fake 224 // one from virttophys() 225 if (!t->used && update_used) { 226 t->used = true; 227 usedEntries++; 228 if (usedEntries == size) { 229 clearUsedBits(); 230 t->used = true; 231 usedEntries++; 232 } 233 } 234 235 return t; 236} 237 238void 239TLB::dumpAll() 240{ 241 MapIter i; 242 for (int x = 0; x < size; x++) { 243 if (tlb[x].valid) { 244 DPRINTFN("%4d: %#2x:%#2x %c %#4x %#8x %#8x %#16x\n", 245 x, tlb[x].range.partitionId, tlb[x].range.contextId, 246 tlb[x].range.real ? 'R' : ' ', tlb[x].range.size, 247 tlb[x].range.va, tlb[x].pte.paddr(), tlb[x].pte()); 248 } 249 } 250} 251 252void 253TLB::demapPage(Addr va, int partition_id, bool real, int context_id) 254{ 255 TlbRange tr; 256 MapIter i; 257 258 DPRINTF(IPR, "TLB: Demapping Page va=%#x pid=%#d cid=%d r=%d\n", 259 va, partition_id, context_id, real); 260 261 cacheValid = false; 262 263 // Assemble full address structure 264 tr.va = va; 265 tr.size = 1; 266 tr.contextId = context_id; 267 tr.partitionId = partition_id; 268 tr.real = real; 269 270 // Demap any entry that conflicts 271 i = lookupTable.find(tr); 272 if (i != lookupTable.end()) { 273 DPRINTF(IPR, "TLB: Demapped page\n"); 274 i->second->valid = false; 275 if (i->second->used) { 276 i->second->used = false; 277 usedEntries--; 278 } 279 freeList.push_front(i->second); 280 lookupTable.erase(i); 281 } 282} 283 284void 285TLB::demapContext(int partition_id, int context_id) 286{ 287 DPRINTF(IPR, "TLB: Demapping Context pid=%#d cid=%d\n", 288 partition_id, context_id); 289 cacheValid = false; 290 for (int x = 0; x < size; x++) { 291 if (tlb[x].range.contextId == context_id && 292 tlb[x].range.partitionId == partition_id) { 293 if (tlb[x].valid) { 294 freeList.push_front(&tlb[x]); 295 } 296 tlb[x].valid = false; 297 if (tlb[x].used) { 298 tlb[x].used = false; 299 usedEntries--; 300 } 301 lookupTable.erase(tlb[x].range); 302 } 303 } 304} 305 306void 307TLB::demapAll(int partition_id) 308{ 309 DPRINTF(TLB, "TLB: Demapping All pid=%#d\n", partition_id); 310 cacheValid = false; 311 for (int x = 0; x < size; x++) { 312 if (tlb[x].valid && !tlb[x].pte.locked() && 313 tlb[x].range.partitionId == partition_id) { 314 freeList.push_front(&tlb[x]); 315 tlb[x].valid = false; 316 if (tlb[x].used) { 317 tlb[x].used = false; 318 usedEntries--; 319 } 320 lookupTable.erase(tlb[x].range); 321 } 322 } 323} 324 325void 326TLB::flushAll() 327{ 328 cacheValid = false; 329 lookupTable.clear(); 330 331 for (int x = 0; x < size; x++) { 332 if (tlb[x].valid) 333 freeList.push_back(&tlb[x]); 334 tlb[x].valid = false; 335 tlb[x].used = false; 336 } 337 usedEntries = 0; 338} 339 340uint64_t 341TLB::TteRead(int entry) 342{ 343 if (entry >= size) 344 panic("entry: %d\n", entry); 345 346 assert(entry < size); 347 if (tlb[entry].valid) 348 return tlb[entry].pte(); 349 else 350 return (uint64_t)-1ll; 351} 352 353uint64_t 354TLB::TagRead(int entry) 355{ 356 assert(entry < size); 357 uint64_t tag; 358 if (!tlb[entry].valid) 359 return (uint64_t)-1ll; 360 361 tag = tlb[entry].range.contextId; 362 tag |= tlb[entry].range.va; 363 tag |= (uint64_t)tlb[entry].range.partitionId << 61; 364 tag |= tlb[entry].range.real ? ULL(1) << 60 : 0; 365 tag |= (uint64_t)~tlb[entry].pte._size() << 56; 366 return tag; 367} 368 369bool 370TLB::validVirtualAddress(Addr va, bool am) 371{ 372 if (am) 373 return true; 374 if (va >= StartVAddrHole && va <= EndVAddrHole) 375 return false; 376 return true; 377} 378 379void 380TLB::writeSfsr(bool write, ContextType ct, bool se, FaultTypes ft, int asi) 381{ 382 if (sfsr & 0x1) 383 sfsr = 0x3; 384 else 385 sfsr = 1; 386 387 if (write) 388 sfsr |= 1 << 2; 389 sfsr |= ct << 4; 390 if (se) 391 sfsr |= 1 << 6; 392 sfsr |= ft << 7; 393 sfsr |= asi << 16; 394} 395 396void 397TLB::writeTagAccess(Addr va, int context) 398{ 399 DPRINTF(TLB, "TLB: Writing Tag Access: va: %#X ctx: %#X value: %#X\n", 400 va, context, mbits(va, 63,13) | mbits(context,12,0)); 401 402 tag_access = mbits(va, 63,13) | mbits(context,12,0); 403} 404 405void 406TLB::writeSfsr(Addr a, bool write, ContextType ct, 407 bool se, FaultTypes ft, int asi) 408{ 409 DPRINTF(TLB, "TLB: Fault: A=%#x w=%d ct=%d ft=%d asi=%d\n", 410 a, (int)write, ct, ft, asi); 411 TLB::writeSfsr(write, ct, se, ft, asi); 412 sfar = a; 413} 414 415Fault 416TLB::translateInst(RequestPtr req, ThreadContext *tc) 417{ 418 uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA); 419 420 Addr vaddr = req->getVaddr(); 421 TlbEntry *e; 422 423 assert(req->getArchFlags() == ASI_IMPLICIT); 424 425 DPRINTF(TLB, "TLB: ITB Request to translate va=%#x size=%d\n", 426 vaddr, req->getSize()); 427 428 // Be fast if we can! 429 if (cacheValid && cacheState == tlbdata) { 430 if (cacheEntry[0]) { 431 if (cacheEntry[0]->range.va < vaddr + sizeof(MachInst) && 432 cacheEntry[0]->range.va + cacheEntry[0]->range.size >= vaddr) { 433 req->setPaddr(cacheEntry[0]->pte.translate(vaddr)); 434 return NoFault; 435 } 436 } else { 437 req->setPaddr(vaddr & PAddrImplMask); 438 return NoFault; 439 } 440 } 441 442 bool hpriv = bits(tlbdata,0,0); 443 bool red = bits(tlbdata,1,1); 444 bool priv = bits(tlbdata,2,2); 445 bool addr_mask = bits(tlbdata,3,3); 446 bool lsu_im = bits(tlbdata,4,4); 447 448 int part_id = bits(tlbdata,15,8); 449 int tl = bits(tlbdata,18,16); 450 int pri_context = bits(tlbdata,47,32); 451 int context; 452 ContextType ct; 453 int asi; 454 bool real = false; 455 456 DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsuim:%d part_id: %#X\n", 457 priv, hpriv, red, lsu_im, part_id); 458 459 if (tl > 0) { 460 asi = ASI_N; 461 ct = Nucleus; 462 context = 0; 463 } else { 464 asi = ASI_P; 465 ct = Primary; 466 context = pri_context; 467 } 468 469 if ( hpriv || red ) { 470 cacheValid = true; 471 cacheState = tlbdata; 472 cacheEntry[0] = NULL; 473 req->setPaddr(vaddr & PAddrImplMask); 474 return NoFault; 475 } 476 477 // If the access is unaligned trap 478 if (vaddr & 0x3) { 479 writeSfsr(false, ct, false, OtherFault, asi); 480 return std::make_shared<MemAddressNotAligned>(); 481 } 482 483 if (addr_mask) 484 vaddr = vaddr & VAddrAMask; 485 486 if (!validVirtualAddress(vaddr, addr_mask)) { 487 writeSfsr(false, ct, false, VaOutOfRange, asi); 488 return std::make_shared<InstructionAccessException>(); 489 } 490 491 if (!lsu_im) { 492 e = lookup(vaddr, part_id, true); 493 real = true; 494 context = 0; 495 } else { 496 e = lookup(vaddr, part_id, false, context); 497 } 498 499 if (e == NULL || !e->valid) { 500 writeTagAccess(vaddr, context); 501 if (real) { 502 return std::make_shared<InstructionRealTranslationMiss>(); 503 } else { 504 if (FullSystem) 505 return std::make_shared<FastInstructionAccessMMUMiss>(); 506 else 507 return std::make_shared<FastInstructionAccessMMUMiss>( 508 req->getVaddr()); 509 } 510 } 511 512 // were not priviledged accesing priv page 513 if (!priv && e->pte.priv()) { 514 writeTagAccess(vaddr, context); 515 writeSfsr(false, ct, false, PrivViolation, asi); 516 return std::make_shared<InstructionAccessException>(); 517 } 518 519 // cache translation date for next translation 520 cacheValid = true; 521 cacheState = tlbdata; 522 cacheEntry[0] = e; 523 524 req->setPaddr(e->pte.translate(vaddr)); 525 DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr()); 526 return NoFault; 527} 528 529Fault 530TLB::translateData(RequestPtr req, ThreadContext *tc, bool write) 531{ 532 /* 533 * @todo this could really use some profiling and fixing to make 534 * it faster! 535 */ 536 uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA); 537 Addr vaddr = req->getVaddr(); 538 Addr size = req->getSize(); 539 ASI asi; 540 asi = (ASI)req->getArchFlags(); 541 bool implicit = false; 542 bool hpriv = bits(tlbdata,0,0); 543 bool unaligned = vaddr & (size - 1); 544 545 DPRINTF(TLB, "TLB: DTB Request to translate va=%#x size=%d asi=%#x\n", 546 vaddr, size, asi); 547 548 if (lookupTable.size() != 64 - freeList.size()) 549 panic("Lookup table size: %d tlb size: %d\n", lookupTable.size(), 550 freeList.size()); 551 if (asi == ASI_IMPLICIT) 552 implicit = true; 553 554 // Only use the fast path here if there doesn't need to be an unaligned 555 // trap later 556 if (!unaligned) { 557 if (hpriv && implicit) { 558 req->setPaddr(vaddr & PAddrImplMask); 559 return NoFault; 560 } 561 562 // Be fast if we can! 563 if (cacheValid && cacheState == tlbdata) { 564 565 566 567 if (cacheEntry[0]) { 568 TlbEntry *ce = cacheEntry[0]; 569 Addr ce_va = ce->range.va; 570 if (cacheAsi[0] == asi && 571 ce_va < vaddr + size && ce_va + ce->range.size > vaddr && 572 (!write || ce->pte.writable())) { 573 req->setPaddr(ce->pte.translate(vaddr)); 574 if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) 575 req->setFlags(Request::UNCACHEABLE); 576 DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr()); 577 return NoFault; 578 } // if matched 579 } // if cache entry valid 580 if (cacheEntry[1]) { 581 TlbEntry *ce = cacheEntry[1]; 582 Addr ce_va = ce->range.va; 583 if (cacheAsi[1] == asi && 584 ce_va < vaddr + size && ce_va + ce->range.size > vaddr && 585 (!write || ce->pte.writable())) { 586 req->setPaddr(ce->pte.translate(vaddr)); 587 if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) 588 req->setFlags(Request::UNCACHEABLE); 589 DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr()); 590 return NoFault; 591 } // if matched 592 } // if cache entry valid 593 } 594 } 595 596 bool red = bits(tlbdata,1,1); 597 bool priv = bits(tlbdata,2,2); 598 bool addr_mask = bits(tlbdata,3,3); 599 bool lsu_dm = bits(tlbdata,5,5); 600 601 int part_id = bits(tlbdata,15,8); 602 int tl = bits(tlbdata,18,16); 603 int pri_context = bits(tlbdata,47,32); 604 int sec_context = bits(tlbdata,63,48); 605 606 bool real = false; 607 ContextType ct = Primary; 608 int context = 0; 609 610 TlbEntry *e; 611 612 DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsudm:%d part_id: %#X\n", 613 priv, hpriv, red, lsu_dm, part_id); 614 615 if (implicit) { 616 if (tl > 0) { 617 asi = ASI_N; 618 ct = Nucleus; 619 context = 0; 620 } else { 621 asi = ASI_P; 622 ct = Primary; 623 context = pri_context; 624 } 625 } else { 626 // We need to check for priv level/asi priv 627 if (!priv && !hpriv && !asiIsUnPriv(asi)) { 628 // It appears that context should be Nucleus in these cases? 629 writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi); 630 return std::make_shared<PrivilegedAction>(); 631 } 632 633 if (!hpriv && asiIsHPriv(asi)) { 634 writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi); 635 return std::make_shared<DataAccessException>(); 636 } 637 638 if (asiIsPrimary(asi)) { 639 context = pri_context; 640 ct = Primary; 641 } else if (asiIsSecondary(asi)) { 642 context = sec_context; 643 ct = Secondary; 644 } else if (asiIsNucleus(asi)) { 645 ct = Nucleus; 646 context = 0; 647 } else { // ???? 648 ct = Primary; 649 context = pri_context; 650 } 651 } 652 653 if (!implicit && asi != ASI_P && asi != ASI_S) { 654 if (asiIsLittle(asi)) 655 panic("Little Endian ASIs not supported\n"); 656 657 //XXX It's unclear from looking at the documentation how a no fault 658 // load differs from a regular one, other than what happens concerning 659 // nfo and e bits in the TTE 660// if (asiIsNoFault(asi)) 661// panic("No Fault ASIs not supported\n"); 662 663 if (asiIsPartialStore(asi)) 664 panic("Partial Store ASIs not supported\n"); 665 666 if (asiIsCmt(asi)) 667 panic("Cmt ASI registers not implmented\n"); 668 669 if (asiIsInterrupt(asi)) 670 goto handleIntRegAccess; 671 if (asiIsMmu(asi)) 672 goto handleMmuRegAccess; 673 if (asiIsScratchPad(asi)) 674 goto handleScratchRegAccess; 675 if (asiIsQueue(asi)) 676 goto handleQueueRegAccess; 677 if (asiIsSparcError(asi)) 678 goto handleSparcErrorRegAccess; 679 680 if (!asiIsReal(asi) && !asiIsNucleus(asi) && !asiIsAsIfUser(asi) && 681 !asiIsTwin(asi) && !asiIsBlock(asi) && !asiIsNoFault(asi)) 682 panic("Accessing ASI %#X. Should we?\n", asi); 683 } 684 685 // If the asi is unaligned trap 686 if (unaligned) { 687 writeSfsr(vaddr, false, ct, false, OtherFault, asi); 688 return std::make_shared<MemAddressNotAligned>(); 689 } 690 691 if (addr_mask) 692 vaddr = vaddr & VAddrAMask; 693 694 if (!validVirtualAddress(vaddr, addr_mask)) { 695 writeSfsr(vaddr, false, ct, true, VaOutOfRange, asi); 696 return std::make_shared<DataAccessException>(); 697 } 698 699 if ((!lsu_dm && !hpriv && !red) || asiIsReal(asi)) { 700 real = true; 701 context = 0; 702 } 703 704 if (hpriv && (implicit || (!asiIsAsIfUser(asi) && !asiIsReal(asi)))) { 705 req->setPaddr(vaddr & PAddrImplMask); 706 return NoFault; 707 } 708 709 e = lookup(vaddr, part_id, real, context); 710 711 if (e == NULL || !e->valid) { 712 writeTagAccess(vaddr, context); 713 DPRINTF(TLB, "TLB: DTB Failed to find matching TLB entry\n"); 714 if (real) { 715 return std::make_shared<DataRealTranslationMiss>(); 716 } else { 717 if (FullSystem) 718 return std::make_shared<FastDataAccessMMUMiss>(); 719 else 720 return std::make_shared<FastDataAccessMMUMiss>( 721 req->getVaddr()); 722 } 723 724 } 725 726 if (!priv && e->pte.priv()) { 727 writeTagAccess(vaddr, context); 728 writeSfsr(vaddr, write, ct, e->pte.sideffect(), PrivViolation, asi); 729 return std::make_shared<DataAccessException>(); 730 } 731 732 if (write && !e->pte.writable()) { 733 writeTagAccess(vaddr, context); 734 writeSfsr(vaddr, write, ct, e->pte.sideffect(), OtherFault, asi); 735 return std::make_shared<FastDataAccessProtection>(); 736 } 737 738 if (e->pte.nofault() && !asiIsNoFault(asi)) { 739 writeTagAccess(vaddr, context); 740 writeSfsr(vaddr, write, ct, e->pte.sideffect(), LoadFromNfo, asi); 741 return std::make_shared<DataAccessException>(); 742 } 743 744 if (e->pte.sideffect() && asiIsNoFault(asi)) { 745 writeTagAccess(vaddr, context); 746 writeSfsr(vaddr, write, ct, e->pte.sideffect(), SideEffect, asi); 747 return std::make_shared<DataAccessException>(); 748 } 749 750 if (e->pte.sideffect() || (e->pte.paddr() >> 39) & 1) 751 req->setFlags(Request::UNCACHEABLE); 752 753 // cache translation date for next translation 754 cacheState = tlbdata; 755 if (!cacheValid) { 756 cacheEntry[1] = NULL; 757 cacheEntry[0] = NULL; 758 } 759 760 if (cacheEntry[0] != e && cacheEntry[1] != e) { 761 cacheEntry[1] = cacheEntry[0]; 762 cacheEntry[0] = e; 763 cacheAsi[1] = cacheAsi[0]; 764 cacheAsi[0] = asi; 765 if (implicit) 766 cacheAsi[0] = (ASI)0; 767 } 768 cacheValid = true; 769 req->setPaddr(e->pte.translate(vaddr)); 770 DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr()); 771 return NoFault; 772 773 /** Normal flow ends here. */ 774handleIntRegAccess: 775 if (!hpriv) { 776 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 777 if (priv) 778 return std::make_shared<DataAccessException>(); 779 else 780 return std::make_shared<PrivilegedAction>(); 781 } 782 783 if ((asi == ASI_SWVR_UDB_INTR_W && !write) || 784 (asi == ASI_SWVR_UDB_INTR_R && write)) { 785 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 786 return std::make_shared<DataAccessException>(); 787 } 788 789 goto regAccessOk; 790 791 792handleScratchRegAccess: 793 if (vaddr > 0x38 || (vaddr >= 0x20 && vaddr < 0x30 && !hpriv)) { 794 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 795 return std::make_shared<DataAccessException>(); 796 } 797 goto regAccessOk; 798 799handleQueueRegAccess: 800 if (!priv && !hpriv) { 801 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 802 return std::make_shared<PrivilegedAction>(); 803 } 804 if ((!hpriv && vaddr & 0xF) || vaddr > 0x3f8 || vaddr < 0x3c0) { 805 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 806 return std::make_shared<DataAccessException>(); 807 } 808 goto regAccessOk; 809 810handleSparcErrorRegAccess: 811 if (!hpriv) { 812 writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi); 813 if (priv) 814 return std::make_shared<DataAccessException>(); 815 else 816 return std::make_shared<PrivilegedAction>(); 817 } 818 goto regAccessOk; 819 820 821regAccessOk: 822handleMmuRegAccess: 823 DPRINTF(TLB, "TLB: DTB Translating MM IPR access\n"); 824 req->setFlags(Request::MMAPPED_IPR); 825 req->setPaddr(req->getVaddr()); 826 return NoFault; 827}; 828 829Fault 830TLB::translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode) 831{ 832 if (mode == Execute) 833 return translateInst(req, tc); 834 else 835 return translateData(req, tc, mode == Write); 836} 837 838void 839TLB::translateTiming(RequestPtr req, ThreadContext *tc, 840 Translation *translation, Mode mode) 841{ 842 assert(translation); 843 translation->finish(translateAtomic(req, tc, mode), req, tc, mode); 844} 845 846Fault 847TLB::translateFunctional(RequestPtr req, ThreadContext *tc, Mode mode) 848{ 849 panic("Not implemented\n"); 850 return NoFault; 851} 852 853Fault 854TLB::finalizePhysical(RequestPtr req, ThreadContext *tc, Mode mode) const 855{ 856 return NoFault; 857} 858 859Cycles 860TLB::doMmuRegRead(ThreadContext *tc, Packet *pkt) 861{ 862 Addr va = pkt->getAddr(); 863 ASI asi = (ASI)pkt->req->getArchFlags(); 864 uint64_t temp; 865 866 DPRINTF(IPR, "Memory Mapped IPR Read: asi=%#X a=%#x\n", 867 (uint32_t)pkt->req->getArchFlags(), pkt->getAddr()); 868 869 TLB *itb = tc->getITBPtr(); 870 871 switch (asi) { 872 case ASI_LSU_CONTROL_REG: 873 assert(va == 0); 874 pkt->set(tc->readMiscReg(MISCREG_MMU_LSU_CTRL)); 875 break; 876 case ASI_MMU: 877 switch (va) { 878 case 0x8: 879 pkt->set(tc->readMiscReg(MISCREG_MMU_P_CONTEXT)); 880 break; 881 case 0x10: 882 pkt->set(tc->readMiscReg(MISCREG_MMU_S_CONTEXT)); 883 break; 884 default: 885 goto doMmuReadError; 886 } 887 break; 888 case ASI_QUEUE: 889 pkt->set(tc->readMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD + 890 (va >> 4) - 0x3c)); 891 break; 892 case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0: 893 assert(va == 0); 894 pkt->set(c0_tsb_ps0); 895 break; 896 case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1: 897 assert(va == 0); 898 pkt->set(c0_tsb_ps1); 899 break; 900 case ASI_DMMU_CTXT_ZERO_CONFIG: 901 assert(va == 0); 902 pkt->set(c0_config); 903 break; 904 case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0: 905 assert(va == 0); 906 pkt->set(itb->c0_tsb_ps0); 907 break; 908 case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1: 909 assert(va == 0); 910 pkt->set(itb->c0_tsb_ps1); 911 break; 912 case ASI_IMMU_CTXT_ZERO_CONFIG: 913 assert(va == 0); 914 pkt->set(itb->c0_config); 915 break; 916 case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0: 917 assert(va == 0); 918 pkt->set(cx_tsb_ps0); 919 break; 920 case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1: 921 assert(va == 0); 922 pkt->set(cx_tsb_ps1); 923 break; 924 case ASI_DMMU_CTXT_NONZERO_CONFIG: 925 assert(va == 0); 926 pkt->set(cx_config); 927 break; 928 case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0: 929 assert(va == 0); 930 pkt->set(itb->cx_tsb_ps0); 931 break; 932 case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1: 933 assert(va == 0); 934 pkt->set(itb->cx_tsb_ps1); 935 break; 936 case ASI_IMMU_CTXT_NONZERO_CONFIG: 937 assert(va == 0); 938 pkt->set(itb->cx_config); 939 break; 940 case ASI_SPARC_ERROR_STATUS_REG: 941 pkt->set((uint64_t)0); 942 break; 943 case ASI_HYP_SCRATCHPAD: 944 case ASI_SCRATCHPAD: 945 pkt->set(tc->readMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3))); 946 break; 947 case ASI_IMMU: 948 switch (va) { 949 case 0x0: 950 temp = itb->tag_access; 951 pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48); 952 break; 953 case 0x18: 954 pkt->set(itb->sfsr); 955 break; 956 case 0x30: 957 pkt->set(itb->tag_access); 958 break; 959 default: 960 goto doMmuReadError; 961 } 962 break; 963 case ASI_DMMU: 964 switch (va) { 965 case 0x0: 966 temp = tag_access; 967 pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48); 968 break; 969 case 0x18: 970 pkt->set(sfsr); 971 break; 972 case 0x20: 973 pkt->set(sfar); 974 break; 975 case 0x30: 976 pkt->set(tag_access); 977 break; 978 case 0x80: 979 pkt->set(tc->readMiscReg(MISCREG_MMU_PART_ID)); 980 break; 981 default: 982 goto doMmuReadError; 983 } 984 break; 985 case ASI_DMMU_TSB_PS0_PTR_REG: 986 pkt->set(MakeTsbPtr(Ps0, 987 tag_access, 988 c0_tsb_ps0, 989 c0_config, 990 cx_tsb_ps0, 991 cx_config)); 992 break; 993 case ASI_DMMU_TSB_PS1_PTR_REG: 994 pkt->set(MakeTsbPtr(Ps1, 995 tag_access, 996 c0_tsb_ps1, 997 c0_config, 998 cx_tsb_ps1, 999 cx_config)); 1000 break; 1001 case ASI_IMMU_TSB_PS0_PTR_REG: 1002 pkt->set(MakeTsbPtr(Ps0, 1003 itb->tag_access, 1004 itb->c0_tsb_ps0, 1005 itb->c0_config, 1006 itb->cx_tsb_ps0, 1007 itb->cx_config)); 1008 break; 1009 case ASI_IMMU_TSB_PS1_PTR_REG: 1010 pkt->set(MakeTsbPtr(Ps1, 1011 itb->tag_access, 1012 itb->c0_tsb_ps1, 1013 itb->c0_config, 1014 itb->cx_tsb_ps1, 1015 itb->cx_config)); 1016 break; 1017 case ASI_SWVR_INTR_RECEIVE: 1018 { 1019 SparcISA::Interrupts * interrupts = 1020 dynamic_cast<SparcISA::Interrupts *>( 1021 tc->getCpuPtr()->getInterruptController()); 1022 pkt->set(interrupts->get_vec(IT_INT_VEC)); 1023 } 1024 break; 1025 case ASI_SWVR_UDB_INTR_R: 1026 { 1027 SparcISA::Interrupts * interrupts = 1028 dynamic_cast<SparcISA::Interrupts *>( 1029 tc->getCpuPtr()->getInterruptController()); 1030 temp = findMsbSet(interrupts->get_vec(IT_INT_VEC)); 1031 tc->getCpuPtr()->clearInterrupt(IT_INT_VEC, temp); 1032 pkt->set(temp); 1033 } 1034 break; 1035 default: 1036doMmuReadError: 1037 panic("need to impl DTB::doMmuRegRead() got asi=%#x, va=%#x\n", 1038 (uint32_t)asi, va); 1039 } 1040 pkt->makeAtomicResponse(); 1041 return Cycles(1); 1042} 1043 1044Cycles 1045TLB::doMmuRegWrite(ThreadContext *tc, Packet *pkt) 1046{ 1047 uint64_t data = pkt->get<uint64_t>(); 1048 Addr va = pkt->getAddr(); 1049 ASI asi = (ASI)pkt->req->getArchFlags(); 1050 1051 Addr ta_insert; 1052 Addr va_insert; 1053 Addr ct_insert; 1054 int part_insert; 1055 int entry_insert = -1; 1056 bool real_insert; 1057 bool ignore; 1058 int part_id; 1059 int ctx_id; 1060 PageTableEntry pte; 1061 1062 DPRINTF(IPR, "Memory Mapped IPR Write: asi=%#X a=%#x d=%#X\n", 1063 (uint32_t)asi, va, data); 1064 1065 TLB *itb = tc->getITBPtr(); 1066 1067 switch (asi) { 1068 case ASI_LSU_CONTROL_REG: 1069 assert(va == 0); 1070 tc->setMiscReg(MISCREG_MMU_LSU_CTRL, data); 1071 break; 1072 case ASI_MMU: 1073 switch (va) { 1074 case 0x8: 1075 tc->setMiscReg(MISCREG_MMU_P_CONTEXT, data); 1076 break; 1077 case 0x10: 1078 tc->setMiscReg(MISCREG_MMU_S_CONTEXT, data); 1079 break; 1080 default: 1081 goto doMmuWriteError; 1082 } 1083 break; 1084 case ASI_QUEUE: 1085 assert(mbits(data,13,6) == data); 1086 tc->setMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD + 1087 (va >> 4) - 0x3c, data); 1088 break; 1089 case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0: 1090 assert(va == 0); 1091 c0_tsb_ps0 = data; 1092 break; 1093 case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1: 1094 assert(va == 0); 1095 c0_tsb_ps1 = data; 1096 break; 1097 case ASI_DMMU_CTXT_ZERO_CONFIG: 1098 assert(va == 0); 1099 c0_config = data; 1100 break; 1101 case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0: 1102 assert(va == 0); 1103 itb->c0_tsb_ps0 = data; 1104 break; 1105 case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1: 1106 assert(va == 0); 1107 itb->c0_tsb_ps1 = data; 1108 break; 1109 case ASI_IMMU_CTXT_ZERO_CONFIG: 1110 assert(va == 0); 1111 itb->c0_config = data; 1112 break; 1113 case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0: 1114 assert(va == 0); 1115 cx_tsb_ps0 = data; 1116 break; 1117 case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1: 1118 assert(va == 0); 1119 cx_tsb_ps1 = data; 1120 break; 1121 case ASI_DMMU_CTXT_NONZERO_CONFIG: 1122 assert(va == 0); 1123 cx_config = data; 1124 break; 1125 case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0: 1126 assert(va == 0); 1127 itb->cx_tsb_ps0 = data; 1128 break; 1129 case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1: 1130 assert(va == 0); 1131 itb->cx_tsb_ps1 = data; 1132 break; 1133 case ASI_IMMU_CTXT_NONZERO_CONFIG: 1134 assert(va == 0); 1135 itb->cx_config = data; 1136 break; 1137 case ASI_SPARC_ERROR_EN_REG: 1138 case ASI_SPARC_ERROR_STATUS_REG: 1139 inform("Ignoring write to SPARC ERROR regsiter\n"); 1140 break; 1141 case ASI_HYP_SCRATCHPAD: 1142 case ASI_SCRATCHPAD: 1143 tc->setMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3), data); 1144 break; 1145 case ASI_IMMU: 1146 switch (va) { 1147 case 0x18: 1148 itb->sfsr = data; 1149 break; 1150 case 0x30: 1151 sext<59>(bits(data, 59,0)); 1152 itb->tag_access = data; 1153 break; 1154 default: 1155 goto doMmuWriteError; 1156 } 1157 break; 1158 case ASI_ITLB_DATA_ACCESS_REG: 1159 entry_insert = bits(va, 8,3); 1160 case ASI_ITLB_DATA_IN_REG: 1161 assert(entry_insert != -1 || mbits(va,10,9) == va); 1162 ta_insert = itb->tag_access; 1163 va_insert = mbits(ta_insert, 63,13); 1164 ct_insert = mbits(ta_insert, 12,0); 1165 part_insert = tc->readMiscReg(MISCREG_MMU_PART_ID); 1166 real_insert = bits(va, 9,9); 1167 pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v : 1168 PageTableEntry::sun4u); 1169 tc->getITBPtr()->insert(va_insert, part_insert, ct_insert, real_insert, 1170 pte, entry_insert); 1171 break; 1172 case ASI_DTLB_DATA_ACCESS_REG: 1173 entry_insert = bits(va, 8,3); 1174 case ASI_DTLB_DATA_IN_REG: 1175 assert(entry_insert != -1 || mbits(va,10,9) == va); 1176 ta_insert = tag_access; 1177 va_insert = mbits(ta_insert, 63,13); 1178 ct_insert = mbits(ta_insert, 12,0); 1179 part_insert = tc->readMiscReg(MISCREG_MMU_PART_ID); 1180 real_insert = bits(va, 9,9); 1181 pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v : 1182 PageTableEntry::sun4u); 1183 insert(va_insert, part_insert, ct_insert, real_insert, pte, 1184 entry_insert); 1185 break; 1186 case ASI_IMMU_DEMAP: 1187 ignore = false; 1188 ctx_id = -1; 1189 part_id = tc->readMiscReg(MISCREG_MMU_PART_ID); 1190 switch (bits(va,5,4)) { 1191 case 0: 1192 ctx_id = tc->readMiscReg(MISCREG_MMU_P_CONTEXT); 1193 break; 1194 case 1: 1195 ignore = true; 1196 break; 1197 case 3: 1198 ctx_id = 0; 1199 break; 1200 default: 1201 ignore = true; 1202 } 1203 1204 switch (bits(va,7,6)) { 1205 case 0: // demap page 1206 if (!ignore) 1207 tc->getITBPtr()->demapPage(mbits(va,63,13), part_id, 1208 bits(va,9,9), ctx_id); 1209 break; 1210 case 1: // demap context 1211 if (!ignore) 1212 tc->getITBPtr()->demapContext(part_id, ctx_id); 1213 break; 1214 case 2: 1215 tc->getITBPtr()->demapAll(part_id); 1216 break; 1217 default: 1218 panic("Invalid type for IMMU demap\n"); 1219 } 1220 break; 1221 case ASI_DMMU: 1222 switch (va) { 1223 case 0x18: 1224 sfsr = data; 1225 break; 1226 case 0x30: 1227 sext<59>(bits(data, 59,0)); 1228 tag_access = data; 1229 break; 1230 case 0x80: 1231 tc->setMiscReg(MISCREG_MMU_PART_ID, data); 1232 break; 1233 default: 1234 goto doMmuWriteError; 1235 } 1236 break; 1237 case ASI_DMMU_DEMAP: 1238 ignore = false; 1239 ctx_id = -1; 1240 part_id = tc->readMiscReg(MISCREG_MMU_PART_ID); 1241 switch (bits(va,5,4)) { 1242 case 0: 1243 ctx_id = tc->readMiscReg(MISCREG_MMU_P_CONTEXT); 1244 break; 1245 case 1: 1246 ctx_id = tc->readMiscReg(MISCREG_MMU_S_CONTEXT); 1247 break; 1248 case 3: 1249 ctx_id = 0; 1250 break; 1251 default: 1252 ignore = true; 1253 } 1254 1255 switch (bits(va,7,6)) { 1256 case 0: // demap page 1257 if (!ignore) 1258 demapPage(mbits(va,63,13), part_id, bits(va,9,9), ctx_id); 1259 break; 1260 case 1: // demap context 1261 if (!ignore) 1262 demapContext(part_id, ctx_id); 1263 break; 1264 case 2: 1265 demapAll(part_id); 1266 break; 1267 default: 1268 panic("Invalid type for IMMU demap\n"); 1269 } 1270 break; 1271 case ASI_SWVR_INTR_RECEIVE: 1272 { 1273 int msb; 1274 // clear all the interrupts that aren't set in the write 1275 SparcISA::Interrupts * interrupts = 1276 dynamic_cast<SparcISA::Interrupts *>( 1277 tc->getCpuPtr()->getInterruptController()); 1278 while (interrupts->get_vec(IT_INT_VEC) & data) { 1279 msb = findMsbSet(interrupts->get_vec(IT_INT_VEC) & data); 1280 tc->getCpuPtr()->clearInterrupt(IT_INT_VEC, msb); 1281 } 1282 } 1283 break; 1284 case ASI_SWVR_UDB_INTR_W: 1285 tc->getSystemPtr()->threadContexts[bits(data,12,8)]->getCpuPtr()-> 1286 postInterrupt(bits(data, 5, 0), 0); 1287 break; 1288 default: 1289doMmuWriteError: 1290 panic("need to impl DTB::doMmuRegWrite() got asi=%#x, va=%#x d=%#x\n", 1291 (uint32_t)pkt->req->getArchFlags(), pkt->getAddr(), data); 1292 } 1293 pkt->makeAtomicResponse(); 1294 return Cycles(1); 1295} 1296 1297void 1298TLB::GetTsbPtr(ThreadContext *tc, Addr addr, int ctx, Addr *ptrs) 1299{ 1300 uint64_t tag_access = mbits(addr,63,13) | mbits(ctx,12,0); 1301 TLB * itb = tc->getITBPtr(); 1302 ptrs[0] = MakeTsbPtr(Ps0, tag_access, 1303 c0_tsb_ps0, 1304 c0_config, 1305 cx_tsb_ps0, 1306 cx_config); 1307 ptrs[1] = MakeTsbPtr(Ps1, tag_access, 1308 c0_tsb_ps1, 1309 c0_config, 1310 cx_tsb_ps1, 1311 cx_config); 1312 ptrs[2] = MakeTsbPtr(Ps0, tag_access, 1313 itb->c0_tsb_ps0, 1314 itb->c0_config, 1315 itb->cx_tsb_ps0, 1316 itb->cx_config); 1317 ptrs[3] = MakeTsbPtr(Ps1, tag_access, 1318 itb->c0_tsb_ps1, 1319 itb->c0_config, 1320 itb->cx_tsb_ps1, 1321 itb->cx_config); 1322} 1323 1324uint64_t 1325TLB::MakeTsbPtr(TsbPageSize ps, uint64_t tag_access, uint64_t c0_tsb, 1326 uint64_t c0_config, uint64_t cX_tsb, uint64_t cX_config) 1327{ 1328 uint64_t tsb; 1329 uint64_t config; 1330 1331 if (bits(tag_access, 12,0) == 0) { 1332 tsb = c0_tsb; 1333 config = c0_config; 1334 } else { 1335 tsb = cX_tsb; 1336 config = cX_config; 1337 } 1338 1339 uint64_t ptr = mbits(tsb,63,13); 1340 bool split = bits(tsb,12,12); 1341 int tsb_size = bits(tsb,3,0); 1342 int page_size = (ps == Ps0) ? bits(config, 2,0) : bits(config,10,8); 1343 1344 if (ps == Ps1 && split) 1345 ptr |= ULL(1) << (13 + tsb_size); 1346 ptr |= (tag_access >> (9 + page_size * 3)) & mask(12+tsb_size, 4); 1347 1348 return ptr; 1349} 1350 1351void 1352TLB::serialize(std::ostream &os) 1353{ 1354 SERIALIZE_SCALAR(size); 1355 SERIALIZE_SCALAR(usedEntries); 1356 SERIALIZE_SCALAR(lastReplaced); 1357 1358 // convert the pointer based free list into an index based one 1359 int *free_list = (int*)malloc(sizeof(int) * size); 1360 int cntr = 0; 1361 std::list<TlbEntry*>::iterator i; 1362 i = freeList.begin(); 1363 while (i != freeList.end()) { 1364 free_list[cntr++] = ((size_t)*i - (size_t)tlb)/ sizeof(TlbEntry); 1365 i++; 1366 } 1367 SERIALIZE_SCALAR(cntr); 1368 SERIALIZE_ARRAY(free_list, cntr); 1369 1370 SERIALIZE_SCALAR(c0_tsb_ps0); 1371 SERIALIZE_SCALAR(c0_tsb_ps1); 1372 SERIALIZE_SCALAR(c0_config); 1373 SERIALIZE_SCALAR(cx_tsb_ps0); 1374 SERIALIZE_SCALAR(cx_tsb_ps1); 1375 SERIALIZE_SCALAR(cx_config); 1376 SERIALIZE_SCALAR(sfsr); 1377 SERIALIZE_SCALAR(tag_access); 1378 1379 for (int x = 0; x < size; x++) { 1380 nameOut(os, csprintf("%s.PTE%d", name(), x)); 1381 tlb[x].serialize(os); 1382 } 1383 SERIALIZE_SCALAR(sfar); 1384} 1385 1386void 1387TLB::unserialize(Checkpoint *cp, const std::string §ion) 1388{ 1389 int oldSize; 1390 1391 paramIn(cp, section, "size", oldSize); 1392 if (oldSize != size) 1393 panic("Don't support unserializing different sized TLBs\n"); 1394 UNSERIALIZE_SCALAR(usedEntries); 1395 UNSERIALIZE_SCALAR(lastReplaced); 1396 1397 int cntr; 1398 UNSERIALIZE_SCALAR(cntr); 1399 1400 int *free_list = (int*)malloc(sizeof(int) * cntr); 1401 freeList.clear(); 1402 UNSERIALIZE_ARRAY(free_list, cntr); 1403 for (int x = 0; x < cntr; x++) 1404 freeList.push_back(&tlb[free_list[x]]); 1405 1406 UNSERIALIZE_SCALAR(c0_tsb_ps0); 1407 UNSERIALIZE_SCALAR(c0_tsb_ps1); 1408 UNSERIALIZE_SCALAR(c0_config); 1409 UNSERIALIZE_SCALAR(cx_tsb_ps0); 1410 UNSERIALIZE_SCALAR(cx_tsb_ps1); 1411 UNSERIALIZE_SCALAR(cx_config); 1412 UNSERIALIZE_SCALAR(sfsr); 1413 UNSERIALIZE_SCALAR(tag_access); 1414 1415 lookupTable.clear(); 1416 for (int x = 0; x < size; x++) { 1417 tlb[x].unserialize(cp, csprintf("%s.PTE%d", section, x)); 1418 if (tlb[x].valid) 1419 lookupTable.insert(tlb[x].range, &tlb[x]); 1420 1421 } 1422 UNSERIALIZE_SCALAR(sfar); 1423} 1424 1425} // namespace SparcISA 1426 1427SparcISA::TLB * 1428SparcTLBParams::create() 1429{ 1430 return new SparcISA::TLB(this); 1431} 1432