tlb.cc revision 12620 
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 "arch/sparc/tlb.hh"
32
33#include <cstring>
34
35#include "arch/sparc/asi.hh"
36#include "arch/sparc/faults.hh"
37#include "arch/sparc/registers.hh"
38#include "base/bitfield.hh"
39#include "base/compiler.hh"
40#include "base/trace.hh"
41#include "cpu/base.hh"
42#include "cpu/thread_context.hh"
43#include "debug/IPR.hh"
44#include "debug/TLB.hh"
45#include "mem/packet_access.hh"
46#include "mem/request.hh"
47#include "sim/full_system.hh"
48#include "sim/system.hh"
49
50/* @todo remove some of the magic constants.  -- ali
51 * */
52namespace SparcISA {
53
54TLB::TLB(const Params *p)
55    : BaseTLB(p), size(p->size), usedEntries(0), lastReplaced(0),
56      cacheState(0), cacheValid(false)
57{
58    // To make this work you'll have to change the hypervisor and OS
59    if (size > 64)
60        fatal("SPARC T1 TLB registers don't support more than 64 TLB entries");
61
62    tlb = new TlbEntry[size];
63    std::memset(tlb, 0, sizeof(TlbEntry) * size);
64
65    for (int x = 0; x < size; x++)
66        freeList.push_back(&tlb[x]);
67
68    c0_tsb_ps0 = 0;
69    c0_tsb_ps1 = 0;
70    c0_config = 0;
71    cx_tsb_ps0 = 0;
72    cx_tsb_ps1 = 0;
73    cx_config = 0;
74    sfsr = 0;
75    tag_access = 0;
76    sfar = 0;
77    cacheEntry[0] = NULL;
78    cacheEntry[1] = NULL;
79}
80
81void
82TLB::clearUsedBits()
83{
84    MapIter i;
85    for (i = lookupTable.begin(); i != lookupTable.end(); i++) {
86        TlbEntry *t = i->second;
87        if (!t->pte.locked()) {
88            t->used = false;
89            usedEntries--;
90        }
91    }
92}
93
94
95void
96TLB::insert(Addr va, int partition_id, int context_id, bool real,
97        const PageTableEntry& PTE, int entry)
98{
99    MapIter i;
100    TlbEntry *new_entry = NULL;
101//    TlbRange tr;
102    int x;
103
104    cacheValid = false;
105    va &= ~(PTE.size()-1);
106 /*   tr.va = va;
107    tr.size = PTE.size() - 1;
108    tr.contextId = context_id;
109    tr.partitionId = partition_id;
110    tr.real = real;
111*/
112
113    DPRINTF(TLB,
114        "TLB: Inserting Entry; va=%#x pa=%#x pid=%d cid=%d r=%d entryid=%d\n",
115        va, PTE.paddr(), partition_id, context_id, (int)real, entry);
116
117    // Demap any entry that conflicts
118    for (x = 0; x < size; x++) {
119        if (tlb[x].range.real == real &&
120            tlb[x].range.partitionId == partition_id &&
121            tlb[x].range.va < va + PTE.size() - 1 &&
122            tlb[x].range.va + tlb[x].range.size >= va &&
123            (real || tlb[x].range.contextId == context_id ))
124        {
125            if (tlb[x].valid) {
126                freeList.push_front(&tlb[x]);
127                DPRINTF(TLB, "TLB: Conflicting entry %#X , deleting it\n", x);
128
129                tlb[x].valid = false;
130                if (tlb[x].used) {
131                    tlb[x].used = false;
132                    usedEntries--;
133                }
134                lookupTable.erase(tlb[x].range);
135            }
136        }
137    }
138
139    if (entry != -1) {
140        assert(entry < size && entry >= 0);
141        new_entry = &tlb[entry];
142    } else {
143        if (!freeList.empty()) {
144            new_entry = freeList.front();
145        } else {
146            x = lastReplaced;
147            do {
148                ++x;
149                if (x == size)
150                    x = 0;
151                if (x == lastReplaced)
152                    goto insertAllLocked;
153            } while (tlb[x].pte.locked());
154            lastReplaced = x;
155            new_entry = &tlb[x];
156        }
157    }
158
159insertAllLocked:
160    // Update the last ently if their all locked
161    if (!new_entry) {
162        new_entry = &tlb[size-1];
163    }
164
165    freeList.remove(new_entry);
166    if (new_entry->valid && new_entry->used)
167        usedEntries--;
168    if (new_entry->valid)
169        lookupTable.erase(new_entry->range);
170
171
172    assert(PTE.valid());
173    new_entry->range.va = va;
174    new_entry->range.size = PTE.size() - 1;
175    new_entry->range.partitionId = partition_id;
176    new_entry->range.contextId = context_id;
177    new_entry->range.real = real;
178    new_entry->pte = PTE;
179    new_entry->used = true;;
180    new_entry->valid = true;
181    usedEntries++;
182
183    i = lookupTable.insert(new_entry->range, new_entry);
184    assert(i != lookupTable.end());
185
186    // If all entries have their used bit set, clear it on them all,
187    // but the one we just inserted
188    if (usedEntries == size) {
189        clearUsedBits();
190        new_entry->used = true;
191        usedEntries++;
192    }
193}
194
195
196TlbEntry*
197TLB::lookup(Addr va, int partition_id, bool real, int context_id,
198            bool update_used)
199{
200    MapIter i;
201    TlbRange tr;
202    TlbEntry *t;
203
204    DPRINTF(TLB, "TLB: Looking up entry va=%#x pid=%d cid=%d r=%d\n",
205            va, partition_id, context_id, real);
206    // Assemble full address structure
207    tr.va = va;
208    tr.size = 1;
209    tr.contextId = context_id;
210    tr.partitionId = partition_id;
211    tr.real = real;
212
213    // Try to find the entry
214    i = lookupTable.find(tr);
215    if (i == lookupTable.end()) {
216        DPRINTF(TLB, "TLB: No valid entry found\n");
217        return NULL;
218    }
219
220    // Mark the entries used bit and clear other used bits in needed
221    t = i->second;
222    DPRINTF(TLB, "TLB: Valid entry found pa: %#x size: %#x\n", t->pte.paddr(),
223            t->pte.size());
224
225    // Update the used bits only if this is a real access (not a fake
226    // one from virttophys()
227    if (!t->used && update_used) {
228        t->used = true;
229        usedEntries++;
230        if (usedEntries == size) {
231            clearUsedBits();
232            t->used = true;
233            usedEntries++;
234        }
235    }
236
237    return t;
238}
239
240void
241TLB::dumpAll()
242{
243    MapIter i;
244    for (int x = 0; x < size; x++) {
245        if (tlb[x].valid) {
246           DPRINTFN("%4d:  %#2x:%#2x %c %#4x %#8x %#8x %#16x\n",
247                   x, tlb[x].range.partitionId, tlb[x].range.contextId,
248                   tlb[x].range.real ? 'R' : ' ', tlb[x].range.size,
249                   tlb[x].range.va, tlb[x].pte.paddr(), tlb[x].pte());
250        }
251    }
252}
253
254void
255TLB::demapPage(Addr va, int partition_id, bool real, int context_id)
256{
257    TlbRange tr;
258    MapIter i;
259
260    DPRINTF(IPR, "TLB: Demapping Page va=%#x pid=%#d cid=%d r=%d\n",
261            va, partition_id, context_id, real);
262
263    cacheValid = false;
264
265    // Assemble full address structure
266    tr.va = va;
267    tr.size = 1;
268    tr.contextId = context_id;
269    tr.partitionId = partition_id;
270    tr.real = real;
271
272    // Demap any entry that conflicts
273    i = lookupTable.find(tr);
274    if (i != lookupTable.end()) {
275        DPRINTF(IPR, "TLB: Demapped page\n");
276        i->second->valid = false;
277        if (i->second->used) {
278            i->second->used = false;
279            usedEntries--;
280        }
281        freeList.push_front(i->second);
282        lookupTable.erase(i);
283    }
284}
285
286void
287TLB::demapContext(int partition_id, int context_id)
288{
289    DPRINTF(IPR, "TLB: Demapping Context pid=%#d cid=%d\n",
290            partition_id, context_id);
291    cacheValid = false;
292    for (int x = 0; x < size; x++) {
293        if (tlb[x].range.contextId == context_id &&
294            tlb[x].range.partitionId == partition_id) {
295            if (tlb[x].valid) {
296                freeList.push_front(&tlb[x]);
297            }
298            tlb[x].valid = false;
299            if (tlb[x].used) {
300                tlb[x].used = false;
301                usedEntries--;
302            }
303            lookupTable.erase(tlb[x].range);
304        }
305    }
306}
307
308void
309TLB::demapAll(int partition_id)
310{
311    DPRINTF(TLB, "TLB: Demapping All pid=%#d\n", partition_id);
312    cacheValid = false;
313    for (int x = 0; x < size; x++) {
314        if (tlb[x].valid && !tlb[x].pte.locked() &&
315                tlb[x].range.partitionId == partition_id) {
316            freeList.push_front(&tlb[x]);
317            tlb[x].valid = false;
318            if (tlb[x].used) {
319                tlb[x].used = false;
320                usedEntries--;
321            }
322            lookupTable.erase(tlb[x].range);
323        }
324    }
325}
326
327void
328TLB::flushAll()
329{
330    cacheValid = false;
331    lookupTable.clear();
332
333    for (int x = 0; x < size; x++) {
334        if (tlb[x].valid)
335            freeList.push_back(&tlb[x]);
336        tlb[x].valid = false;
337        tlb[x].used = false;
338    }
339    usedEntries = 0;
340}
341
342uint64_t
343TLB::TteRead(int entry)
344{
345    if (entry >= size)
346        panic("entry: %d\n", entry);
347
348    assert(entry < size);
349    if (tlb[entry].valid)
350        return tlb[entry].pte();
351    else
352        return (uint64_t)-1ll;
353}
354
355uint64_t
356TLB::TagRead(int entry)
357{
358    assert(entry < size);
359    uint64_t tag;
360    if (!tlb[entry].valid)
361        return (uint64_t)-1ll;
362
363    tag = tlb[entry].range.contextId;
364    tag |= tlb[entry].range.va;
365    tag |= (uint64_t)tlb[entry].range.partitionId << 61;
366    tag |= tlb[entry].range.real ? ULL(1) << 60 : 0;
367    tag |= (uint64_t)~tlb[entry].pte._size() << 56;
368    return tag;
369}
370
371bool
372TLB::validVirtualAddress(Addr va, bool am)
373{
374    if (am)
375        return true;
376    if (va >= StartVAddrHole && va <= EndVAddrHole)
377        return false;
378    return true;
379}
380
381void
382TLB::writeSfsr(bool write, ContextType ct, bool se, FaultTypes ft, int asi)
383{
384    if (sfsr & 0x1)
385        sfsr = 0x3;
386    else
387        sfsr = 1;
388
389    if (write)
390        sfsr |= 1 << 2;
391    sfsr |= ct << 4;
392    if (se)
393        sfsr |= 1 << 6;
394    sfsr |= ft << 7;
395    sfsr |= asi << 16;
396}
397
398void
399TLB::writeTagAccess(Addr va, int context)
400{
401    DPRINTF(TLB, "TLB: Writing Tag Access: va: %#X ctx: %#X value: %#X\n",
402            va, context, mbits(va, 63,13) | mbits(context,12,0));
403
404    tag_access = mbits(va, 63,13) | mbits(context,12,0);
405}
406
407void
408TLB::writeSfsr(Addr a, bool write, ContextType ct,
409        bool se, FaultTypes ft, int asi)
410{
411    DPRINTF(TLB, "TLB: Fault: A=%#x w=%d ct=%d ft=%d asi=%d\n",
412            a, (int)write, ct, ft, asi);
413    TLB::writeSfsr(write, ct, se, ft, asi);
414    sfar = a;
415}
416
417Fault
418TLB::translateInst(RequestPtr req, ThreadContext *tc)
419{
420    uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA);
421
422    Addr vaddr = req->getVaddr();
423    TlbEntry *e;
424
425    assert(req->getArchFlags() == ASI_IMPLICIT);
426
427    DPRINTF(TLB, "TLB: ITB Request to translate va=%#x size=%d\n",
428            vaddr, req->getSize());
429
430    // Be fast if we can!
431    if (cacheValid && cacheState == tlbdata) {
432        if (cacheEntry[0]) {
433            if (cacheEntry[0]->range.va < vaddr + sizeof(MachInst) &&
434                cacheEntry[0]->range.va + cacheEntry[0]->range.size >= vaddr) {
435                req->setPaddr(cacheEntry[0]->pte.translate(vaddr));
436                return NoFault;
437            }
438        } else {
439            req->setPaddr(vaddr & PAddrImplMask);
440            return NoFault;
441        }
442    }
443
444    bool hpriv = bits(tlbdata,0,0);
445    bool red = bits(tlbdata,1,1);
446    bool priv = bits(tlbdata,2,2);
447    bool addr_mask = bits(tlbdata,3,3);
448    bool lsu_im = bits(tlbdata,4,4);
449
450    int part_id = bits(tlbdata,15,8);
451    int tl = bits(tlbdata,18,16);
452    int pri_context = bits(tlbdata,47,32);
453    int context;
454    ContextType ct;
455    int asi;
456    bool real = false;
457
458    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsuim:%d part_id: %#X\n",
459           priv, hpriv, red, lsu_im, part_id);
460
461    if (tl > 0) {
462        asi = ASI_N;
463        ct = Nucleus;
464        context = 0;
465    } else {
466        asi = ASI_P;
467        ct = Primary;
468        context = pri_context;
469    }
470
471    if ( hpriv || red ) {
472        cacheValid = true;
473        cacheState = tlbdata;
474        cacheEntry[0] = NULL;
475        req->setPaddr(vaddr & PAddrImplMask);
476        return NoFault;
477    }
478
479    // If the access is unaligned trap
480    if (vaddr & 0x3) {
481        writeSfsr(false, ct, false, OtherFault, asi);
482        return std::make_shared<MemAddressNotAligned>();
483    }
484
485    if (addr_mask)
486        vaddr = vaddr & VAddrAMask;
487
488    if (!validVirtualAddress(vaddr, addr_mask)) {
489        writeSfsr(false, ct, false, VaOutOfRange, asi);
490        return std::make_shared<InstructionAccessException>();
491    }
492
493    if (!lsu_im) {
494        e = lookup(vaddr, part_id, true);
495        real = true;
496        context = 0;
497    } else {
498        e = lookup(vaddr, part_id, false, context);
499    }
500
501    if (e == NULL || !e->valid) {
502        writeTagAccess(vaddr, context);
503        if (real) {
504            return std::make_shared<InstructionRealTranslationMiss>();
505        } else {
506            if (FullSystem)
507                return std::make_shared<FastInstructionAccessMMUMiss>();
508            else
509                return std::make_shared<FastInstructionAccessMMUMiss>(
510                    req->getVaddr());
511        }
512    }
513
514    // were not priviledged accesing priv page
515    if (!priv && e->pte.priv()) {
516        writeTagAccess(vaddr, context);
517        writeSfsr(false, ct, false, PrivViolation, asi);
518        return std::make_shared<InstructionAccessException>();
519    }
520
521    // cache translation date for next translation
522    cacheValid = true;
523    cacheState = tlbdata;
524    cacheEntry[0] = e;
525
526    req->setPaddr(e->pte.translate(vaddr));
527    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
528    return NoFault;
529}
530
531Fault
532TLB::translateData(RequestPtr req, ThreadContext *tc, bool write)
533{
534    /*
535     * @todo this could really use some profiling and fixing to make
536     * it faster!
537     */
538    uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA);
539    Addr vaddr = req->getVaddr();
540    Addr size = req->getSize();
541    ASI asi;
542    asi = (ASI)req->getArchFlags();
543    bool implicit = false;
544    bool hpriv = bits(tlbdata,0,0);
545    bool unaligned = vaddr & (size - 1);
546
547    DPRINTF(TLB, "TLB: DTB Request to translate va=%#x size=%d asi=%#x\n",
548            vaddr, size, asi);
549
550    if (lookupTable.size() != 64 - freeList.size())
551       panic("Lookup table size: %d tlb size: %d\n", lookupTable.size(),
552               freeList.size());
553    if (asi == ASI_IMPLICIT)
554        implicit = true;
555
556    // Only use the fast path here if there doesn't need to be an unaligned
557    // trap later
558    if (!unaligned) {
559        if (hpriv && implicit) {
560            req->setPaddr(vaddr & PAddrImplMask);
561            return NoFault;
562        }
563
564        // Be fast if we can!
565        if (cacheValid &&  cacheState == tlbdata) {
566
567
568
569            if (cacheEntry[0]) {
570                TlbEntry *ce = cacheEntry[0];
571                Addr ce_va = ce->range.va;
572                if (cacheAsi[0] == asi &&
573                    ce_va < vaddr + size && ce_va + ce->range.size > vaddr &&
574                    (!write || ce->pte.writable())) {
575                    req->setPaddr(ce->pte.translate(vaddr));
576                    if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) {
577                        req->setFlags(
578                            Request::UNCACHEABLE | Request::STRICT_ORDER);
579                    }
580                    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
581                    return NoFault;
582                } // if matched
583            } // if cache entry valid
584            if (cacheEntry[1]) {
585                TlbEntry *ce = cacheEntry[1];
586                Addr ce_va = ce->range.va;
587                if (cacheAsi[1] == asi &&
588                    ce_va < vaddr + size && ce_va + ce->range.size > vaddr &&
589                    (!write || ce->pte.writable())) {
590                    req->setPaddr(ce->pte.translate(vaddr));
591                    if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) {
592                        req->setFlags(
593                            Request::UNCACHEABLE | Request::STRICT_ORDER);
594                    }
595                    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
596                    return NoFault;
597                } // if matched
598            } // if cache entry valid
599        }
600    }
601
602    bool red = bits(tlbdata,1,1);
603    bool priv = bits(tlbdata,2,2);
604    bool addr_mask = bits(tlbdata,3,3);
605    bool lsu_dm = bits(tlbdata,5,5);
606
607    int part_id = bits(tlbdata,15,8);
608    int tl = bits(tlbdata,18,16);
609    int pri_context = bits(tlbdata,47,32);
610    int sec_context = bits(tlbdata,63,48);
611
612    bool real = false;
613    ContextType ct = Primary;
614    int context = 0;
615
616    TlbEntry *e;
617
618    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsudm:%d part_id: %#X\n",
619            priv, hpriv, red, lsu_dm, part_id);
620
621    if (implicit) {
622        if (tl > 0) {
623            asi = ASI_N;
624            ct = Nucleus;
625            context = 0;
626        } else {
627            asi = ASI_P;
628            ct = Primary;
629            context = pri_context;
630        }
631    } else {
632        // We need to check for priv level/asi priv
633        if (!priv && !hpriv && !asiIsUnPriv(asi)) {
634            // It appears that context should be Nucleus in these cases?
635            writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi);
636            return std::make_shared<PrivilegedAction>();
637        }
638
639        if (!hpriv && asiIsHPriv(asi)) {
640            writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi);
641            return std::make_shared<DataAccessException>();
642        }
643
644        if (asiIsPrimary(asi)) {
645            context = pri_context;
646            ct = Primary;
647        } else if (asiIsSecondary(asi)) {
648            context = sec_context;
649            ct = Secondary;
650        } else if (asiIsNucleus(asi)) {
651            ct = Nucleus;
652            context = 0;
653        } else {  // ????
654            ct = Primary;
655            context = pri_context;
656        }
657    }
658
659    if (!implicit && asi != ASI_P && asi != ASI_S) {
660        if (asiIsLittle(asi))
661            panic("Little Endian ASIs not supported\n");
662
663        //XXX It's unclear from looking at the documentation how a no fault
664        // load differs from a regular one, other than what happens concerning
665        // nfo and e bits in the TTE
666//        if (asiIsNoFault(asi))
667//            panic("No Fault ASIs not supported\n");
668
669        if (asiIsPartialStore(asi))
670            panic("Partial Store ASIs not supported\n");
671
672        if (asiIsCmt(asi))
673            panic("Cmt ASI registers not implmented\n");
674
675        if (asiIsInterrupt(asi))
676            goto handleIntRegAccess;
677        if (asiIsMmu(asi))
678            goto handleMmuRegAccess;
679        if (asiIsScratchPad(asi))
680            goto handleScratchRegAccess;
681        if (asiIsQueue(asi))
682            goto handleQueueRegAccess;
683        if (asiIsSparcError(asi))
684            goto handleSparcErrorRegAccess;
685
686        if (!asiIsReal(asi) && !asiIsNucleus(asi) && !asiIsAsIfUser(asi) &&
687                !asiIsTwin(asi) && !asiIsBlock(asi) && !asiIsNoFault(asi))
688            panic("Accessing ASI %#X. Should we?\n", asi);
689    }
690
691    // If the asi is unaligned trap
692    if (unaligned) {
693        writeSfsr(vaddr, false, ct, false, OtherFault, asi);
694        return std::make_shared<MemAddressNotAligned>();
695    }
696
697    if (addr_mask)
698        vaddr = vaddr & VAddrAMask;
699
700    if (!validVirtualAddress(vaddr, addr_mask)) {
701        writeSfsr(vaddr, false, ct, true, VaOutOfRange, asi);
702        return std::make_shared<DataAccessException>();
703    }
704
705    if ((!lsu_dm && !hpriv && !red) || asiIsReal(asi)) {
706        real = true;
707        context = 0;
708    }
709
710    if (hpriv && (implicit || (!asiIsAsIfUser(asi) && !asiIsReal(asi)))) {
711        req->setPaddr(vaddr & PAddrImplMask);
712        return NoFault;
713    }
714
715    e = lookup(vaddr, part_id, real, context);
716
717    if (e == NULL || !e->valid) {
718        writeTagAccess(vaddr, context);
719        DPRINTF(TLB, "TLB: DTB Failed to find matching TLB entry\n");
720        if (real) {
721            return std::make_shared<DataRealTranslationMiss>();
722        } else {
723            if (FullSystem)
724                return std::make_shared<FastDataAccessMMUMiss>();
725            else
726                return std::make_shared<FastDataAccessMMUMiss>(
727                    req->getVaddr());
728        }
729
730    }
731
732    if (!priv && e->pte.priv()) {
733        writeTagAccess(vaddr, context);
734        writeSfsr(vaddr, write, ct, e->pte.sideffect(), PrivViolation, asi);
735        return std::make_shared<DataAccessException>();
736    }
737
738    if (write && !e->pte.writable()) {
739        writeTagAccess(vaddr, context);
740        writeSfsr(vaddr, write, ct, e->pte.sideffect(), OtherFault, asi);
741        return std::make_shared<FastDataAccessProtection>();
742    }
743
744    if (e->pte.nofault() && !asiIsNoFault(asi)) {
745        writeTagAccess(vaddr, context);
746        writeSfsr(vaddr, write, ct, e->pte.sideffect(), LoadFromNfo, asi);
747        return std::make_shared<DataAccessException>();
748    }
749
750    if (e->pte.sideffect() && asiIsNoFault(asi)) {
751        writeTagAccess(vaddr, context);
752        writeSfsr(vaddr, write, ct, e->pte.sideffect(), SideEffect, asi);
753        return std::make_shared<DataAccessException>();
754    }
755
756    if (e->pte.sideffect() || (e->pte.paddr() >> 39) & 1)
757        req->setFlags(Request::UNCACHEABLE | Request::STRICT_ORDER);
758
759    // cache translation date for next translation
760    cacheState = tlbdata;
761    if (!cacheValid) {
762        cacheEntry[1] = NULL;
763        cacheEntry[0] = NULL;
764    }
765
766    if (cacheEntry[0] != e && cacheEntry[1] != e) {
767        cacheEntry[1] = cacheEntry[0];
768        cacheEntry[0] = e;
769        cacheAsi[1] = cacheAsi[0];
770        cacheAsi[0] = asi;
771        if (implicit)
772            cacheAsi[0] = (ASI)0;
773    }
774    cacheValid = true;
775    req->setPaddr(e->pte.translate(vaddr));
776    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
777    return NoFault;
778
779    /** Normal flow ends here. */
780handleIntRegAccess:
781    if (!hpriv) {
782        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
783        if (priv)
784            return std::make_shared<DataAccessException>();
785         else
786             return std::make_shared<PrivilegedAction>();
787    }
788
789    if ((asi == ASI_SWVR_UDB_INTR_W && !write) ||
790        (asi == ASI_SWVR_UDB_INTR_R && write)) {
791        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
792        return std::make_shared<DataAccessException>();
793    }
794
795    goto regAccessOk;
796
797
798handleScratchRegAccess:
799    if (vaddr > 0x38 || (vaddr >= 0x20 && vaddr < 0x30 && !hpriv)) {
800        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
801        return std::make_shared<DataAccessException>();
802    }
803    goto regAccessOk;
804
805handleQueueRegAccess:
806    if (!priv  && !hpriv) {
807        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
808        return std::make_shared<PrivilegedAction>();
809    }
810    if ((!hpriv && vaddr & 0xF) || vaddr > 0x3f8 || vaddr < 0x3c0) {
811        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
812        return std::make_shared<DataAccessException>();
813    }
814    goto regAccessOk;
815
816handleSparcErrorRegAccess:
817    if (!hpriv) {
818        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
819        if (priv)
820            return std::make_shared<DataAccessException>();
821         else
822             return std::make_shared<PrivilegedAction>();
823    }
824    goto regAccessOk;
825
826
827regAccessOk:
828handleMmuRegAccess:
829    DPRINTF(TLB, "TLB: DTB Translating MM IPR access\n");
830    req->setFlags(Request::MMAPPED_IPR);
831    req->setPaddr(req->getVaddr());
832    return NoFault;
833};
834
835Fault
836TLB::translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode)
837{
838    if (mode == Execute)
839        return translateInst(req, tc);
840    else
841        return translateData(req, tc, mode == Write);
842}
843
844void
845TLB::translateTiming(RequestPtr req, ThreadContext *tc,
846        Translation *translation, Mode mode)
847{
848    assert(translation);
849    translation->finish(translateAtomic(req, tc, mode), req, tc, mode);
850}
851
852Fault
853TLB::finalizePhysical(RequestPtr req, ThreadContext *tc, Mode mode) const
854{
855    return NoFault;
856}
857
858Cycles
859TLB::doMmuRegRead(ThreadContext *tc, Packet *pkt)
860{
861    Addr va = pkt->getAddr();
862    ASI asi = (ASI)pkt->req->getArchFlags();
863    uint64_t temp;
864
865    DPRINTF(IPR, "Memory Mapped IPR Read: asi=%#X a=%#x\n",
866         (uint32_t)pkt->req->getArchFlags(), pkt->getAddr());
867
868    TLB *itb = dynamic_cast<TLB *>(tc->getITBPtr());
869
870    switch (asi) {
871      case ASI_LSU_CONTROL_REG:
872        assert(va == 0);
873        pkt->set(tc->readMiscReg(MISCREG_MMU_LSU_CTRL));
874        break;
875      case ASI_MMU:
876        switch (va) {
877          case 0x8:
878            pkt->set(tc->readMiscReg(MISCREG_MMU_P_CONTEXT));
879            break;
880          case 0x10:
881            pkt->set(tc->readMiscReg(MISCREG_MMU_S_CONTEXT));
882            break;
883          default:
884            goto doMmuReadError;
885        }
886        break;
887      case ASI_QUEUE:
888        pkt->set(tc->readMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD +
889                    (va >> 4) - 0x3c));
890        break;
891      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
892        assert(va == 0);
893        pkt->set(c0_tsb_ps0);
894        break;
895      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
896        assert(va == 0);
897        pkt->set(c0_tsb_ps1);
898        break;
899      case ASI_DMMU_CTXT_ZERO_CONFIG:
900        assert(va == 0);
901        pkt->set(c0_config);
902        break;
903      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
904        assert(va == 0);
905        pkt->set(itb->c0_tsb_ps0);
906        break;
907      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
908        assert(va == 0);
909        pkt->set(itb->c0_tsb_ps1);
910        break;
911      case ASI_IMMU_CTXT_ZERO_CONFIG:
912        assert(va == 0);
913        pkt->set(itb->c0_config);
914        break;
915      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
916        assert(va == 0);
917        pkt->set(cx_tsb_ps0);
918        break;
919      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
920        assert(va == 0);
921        pkt->set(cx_tsb_ps1);
922        break;
923      case ASI_DMMU_CTXT_NONZERO_CONFIG:
924        assert(va == 0);
925        pkt->set(cx_config);
926        break;
927      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
928        assert(va == 0);
929        pkt->set(itb->cx_tsb_ps0);
930        break;
931      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
932        assert(va == 0);
933        pkt->set(itb->cx_tsb_ps1);
934        break;
935      case ASI_IMMU_CTXT_NONZERO_CONFIG:
936        assert(va == 0);
937        pkt->set(itb->cx_config);
938        break;
939      case ASI_SPARC_ERROR_STATUS_REG:
940        pkt->set((uint64_t)0);
941        break;
942      case ASI_HYP_SCRATCHPAD:
943      case ASI_SCRATCHPAD:
944        pkt->set(tc->readMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3)));
945        break;
946      case ASI_IMMU:
947        switch (va) {
948          case 0x0:
949            temp = itb->tag_access;
950            pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48);
951            break;
952          case 0x18:
953            pkt->set(itb->sfsr);
954            break;
955          case 0x30:
956            pkt->set(itb->tag_access);
957            break;
958          default:
959            goto doMmuReadError;
960        }
961        break;
962      case ASI_DMMU:
963        switch (va) {
964          case 0x0:
965            temp = tag_access;
966            pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48);
967            break;
968          case 0x18:
969            pkt->set(sfsr);
970            break;
971          case 0x20:
972            pkt->set(sfar);
973            break;
974          case 0x30:
975            pkt->set(tag_access);
976            break;
977          case 0x80:
978            pkt->set(tc->readMiscReg(MISCREG_MMU_PART_ID));
979            break;
980          default:
981                goto doMmuReadError;
982        }
983        break;
984      case ASI_DMMU_TSB_PS0_PTR_REG:
985        pkt->set(MakeTsbPtr(Ps0,
986            tag_access,
987            c0_tsb_ps0,
988            c0_config,
989            cx_tsb_ps0,
990            cx_config));
991        break;
992      case ASI_DMMU_TSB_PS1_PTR_REG:
993        pkt->set(MakeTsbPtr(Ps1,
994                tag_access,
995                c0_tsb_ps1,
996                c0_config,
997                cx_tsb_ps1,
998                cx_config));
999        break;
1000      case ASI_IMMU_TSB_PS0_PTR_REG:
1001          pkt->set(MakeTsbPtr(Ps0,
1002                itb->tag_access,
1003                itb->c0_tsb_ps0,
1004                itb->c0_config,
1005                itb->cx_tsb_ps0,
1006                itb->cx_config));
1007        break;
1008      case ASI_IMMU_TSB_PS1_PTR_REG:
1009          pkt->set(MakeTsbPtr(Ps1,
1010                itb->tag_access,
1011                itb->c0_tsb_ps1,
1012                itb->c0_config,
1013                itb->cx_tsb_ps1,
1014                itb->cx_config));
1015        break;
1016      case ASI_SWVR_INTR_RECEIVE:
1017        {
1018            SparcISA::Interrupts * interrupts =
1019                dynamic_cast<SparcISA::Interrupts *>(
1020                        tc->getCpuPtr()->getInterruptController(0));
1021            pkt->set(interrupts->get_vec(IT_INT_VEC));
1022        }
1023        break;
1024      case ASI_SWVR_UDB_INTR_R:
1025        {
1026            SparcISA::Interrupts * interrupts =
1027                dynamic_cast<SparcISA::Interrupts *>(
1028                        tc->getCpuPtr()->getInterruptController(0));
1029            temp = findMsbSet(interrupts->get_vec(IT_INT_VEC));
1030            tc->getCpuPtr()->clearInterrupt(0, IT_INT_VEC, temp);
1031            pkt->set(temp);
1032        }
1033        break;
1034      default:
1035doMmuReadError:
1036        panic("need to impl DTB::doMmuRegRead() got asi=%#x, va=%#x\n",
1037            (uint32_t)asi, va);
1038    }
1039    pkt->makeAtomicResponse();
1040    return Cycles(1);
1041}
1042
1043Cycles
1044TLB::doMmuRegWrite(ThreadContext *tc, Packet *pkt)
1045{
1046    uint64_t data = pkt->get<uint64_t>();
1047    Addr va = pkt->getAddr();
1048    ASI asi = (ASI)pkt->req->getArchFlags();
1049
1050    Addr ta_insert;
1051    Addr va_insert;
1052    Addr ct_insert;
1053    int part_insert;
1054    int entry_insert = -1;
1055    bool real_insert;
1056    bool ignore;
1057    int part_id;
1058    int ctx_id;
1059    PageTableEntry pte;
1060
1061    DPRINTF(IPR, "Memory Mapped IPR Write: asi=%#X a=%#x d=%#X\n",
1062         (uint32_t)asi, va, data);
1063
1064    TLB *itb = dynamic_cast<TLB *>(tc->getITBPtr());
1065
1066    switch (asi) {
1067      case ASI_LSU_CONTROL_REG:
1068        assert(va == 0);
1069        tc->setMiscReg(MISCREG_MMU_LSU_CTRL, data);
1070        break;
1071      case ASI_MMU:
1072        switch (va) {
1073          case 0x8:
1074            tc->setMiscReg(MISCREG_MMU_P_CONTEXT, data);
1075            break;
1076          case 0x10:
1077            tc->setMiscReg(MISCREG_MMU_S_CONTEXT, data);
1078            break;
1079          default:
1080            goto doMmuWriteError;
1081        }
1082        break;
1083      case ASI_QUEUE:
1084        assert(mbits(data,13,6) == data);
1085        tc->setMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD +
1086                    (va >> 4) - 0x3c, data);
1087        break;
1088      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
1089        assert(va == 0);
1090        c0_tsb_ps0 = data;
1091        break;
1092      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
1093        assert(va == 0);
1094        c0_tsb_ps1 = data;
1095        break;
1096      case ASI_DMMU_CTXT_ZERO_CONFIG:
1097        assert(va == 0);
1098        c0_config = data;
1099        break;
1100      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
1101        assert(va == 0);
1102        itb->c0_tsb_ps0 = data;
1103        break;
1104      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
1105        assert(va == 0);
1106        itb->c0_tsb_ps1 = data;
1107        break;
1108      case ASI_IMMU_CTXT_ZERO_CONFIG:
1109        assert(va == 0);
1110        itb->c0_config = data;
1111        break;
1112      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
1113        assert(va == 0);
1114        cx_tsb_ps0 = data;
1115        break;
1116      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
1117        assert(va == 0);
1118        cx_tsb_ps1 = data;
1119        break;
1120      case ASI_DMMU_CTXT_NONZERO_CONFIG:
1121        assert(va == 0);
1122        cx_config = data;
1123        break;
1124      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
1125        assert(va == 0);
1126        itb->cx_tsb_ps0 = data;
1127        break;
1128      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
1129        assert(va == 0);
1130        itb->cx_tsb_ps1 = data;
1131        break;
1132      case ASI_IMMU_CTXT_NONZERO_CONFIG:
1133        assert(va == 0);
1134        itb->cx_config = data;
1135        break;
1136      case ASI_SPARC_ERROR_EN_REG:
1137      case ASI_SPARC_ERROR_STATUS_REG:
1138        inform("Ignoring write to SPARC ERROR regsiter\n");
1139        break;
1140      case ASI_HYP_SCRATCHPAD:
1141      case ASI_SCRATCHPAD:
1142        tc->setMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3), data);
1143        break;
1144      case ASI_IMMU:
1145        switch (va) {
1146          case 0x18:
1147            itb->sfsr = data;
1148            break;
1149          case 0x30:
1150            sext<59>(bits(data, 59,0));
1151            itb->tag_access = data;
1152            break;
1153          default:
1154            goto doMmuWriteError;
1155        }
1156        break;
1157      case ASI_ITLB_DATA_ACCESS_REG:
1158        entry_insert = bits(va, 8,3);
1159        M5_FALLTHROUGH;
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        itb->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        M5_FALLTHROUGH;
1175      case ASI_DTLB_DATA_IN_REG:
1176        assert(entry_insert != -1 || mbits(va,10,9) == va);
1177        ta_insert = tag_access;
1178        va_insert = mbits(ta_insert, 63,13);
1179        ct_insert = mbits(ta_insert, 12,0);
1180        part_insert = tc->readMiscReg(MISCREG_MMU_PART_ID);
1181        real_insert = bits(va, 9,9);
1182        pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v :
1183                PageTableEntry::sun4u);
1184        insert(va_insert, part_insert, ct_insert, real_insert, pte,
1185               entry_insert);
1186        break;
1187      case ASI_IMMU_DEMAP:
1188        ignore = false;
1189        ctx_id = -1;
1190        part_id =  tc->readMiscReg(MISCREG_MMU_PART_ID);
1191        switch (bits(va,5,4)) {
1192          case 0:
1193            ctx_id = tc->readMiscReg(MISCREG_MMU_P_CONTEXT);
1194            break;
1195          case 1:
1196            ignore = true;
1197            break;
1198          case 3:
1199            ctx_id = 0;
1200            break;
1201          default:
1202            ignore = true;
1203        }
1204
1205        switch (bits(va,7,6)) {
1206          case 0: // demap page
1207            if (!ignore)
1208                itb->demapPage(mbits(va,63,13), part_id, bits(va,9,9), ctx_id);
1209            break;
1210          case 1: // demap context
1211            if (!ignore)
1212                itb->demapContext(part_id, ctx_id);
1213            break;
1214          case 2:
1215            itb->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(0));
1278            while (interrupts->get_vec(IT_INT_VEC) & data) {
1279                msb = findMsbSet(interrupts->get_vec(IT_INT_VEC) & data);
1280                tc->getCpuPtr()->clearInterrupt(0, 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(0, 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 = dynamic_cast<TLB *>(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(CheckpointOut &cp) const
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    std::vector<int> free_list;
1360    for (const TlbEntry *entry : freeList)
1361        free_list.push_back(entry - tlb);
1362
1363    SERIALIZE_CONTAINER(free_list);
1364
1365    SERIALIZE_SCALAR(c0_tsb_ps0);
1366    SERIALIZE_SCALAR(c0_tsb_ps1);
1367    SERIALIZE_SCALAR(c0_config);
1368    SERIALIZE_SCALAR(cx_tsb_ps0);
1369    SERIALIZE_SCALAR(cx_tsb_ps1);
1370    SERIALIZE_SCALAR(cx_config);
1371    SERIALIZE_SCALAR(sfsr);
1372    SERIALIZE_SCALAR(tag_access);
1373    SERIALIZE_SCALAR(sfar);
1374
1375    for (int x = 0; x < size; x++) {
1376        ScopedCheckpointSection sec(cp, csprintf("PTE%d", x));
1377        tlb[x].serialize(cp);
1378    }
1379}
1380
1381void
1382TLB::unserialize(CheckpointIn &cp)
1383{
1384    int oldSize;
1385
1386    paramIn(cp, "size", oldSize);
1387    if (oldSize != size)
1388        panic("Don't support unserializing different sized TLBs\n");
1389    UNSERIALIZE_SCALAR(usedEntries);
1390    UNSERIALIZE_SCALAR(lastReplaced);
1391
1392    std::vector<int> free_list;
1393    UNSERIALIZE_CONTAINER(free_list);
1394    freeList.clear();
1395    for (int idx : free_list)
1396        freeList.push_back(&tlb[idx]);
1397
1398    UNSERIALIZE_SCALAR(c0_tsb_ps0);
1399    UNSERIALIZE_SCALAR(c0_tsb_ps1);
1400    UNSERIALIZE_SCALAR(c0_config);
1401    UNSERIALIZE_SCALAR(cx_tsb_ps0);
1402    UNSERIALIZE_SCALAR(cx_tsb_ps1);
1403    UNSERIALIZE_SCALAR(cx_config);
1404    UNSERIALIZE_SCALAR(sfsr);
1405    UNSERIALIZE_SCALAR(tag_access);
1406
1407    lookupTable.clear();
1408    for (int x = 0; x < size; x++) {
1409        ScopedCheckpointSection sec(cp, csprintf("PTE%d", x));
1410        tlb[x].unserialize(cp);
1411        if (tlb[x].valid)
1412            lookupTable.insert(tlb[x].range, &tlb[x]);
1413
1414    }
1415    UNSERIALIZE_SCALAR(sfar);
1416}
1417
1418} // namespace SparcISA
1419
1420SparcISA::TLB *
1421SparcTLBParams::create()
1422{
1423    return new SparcISA::TLB(this);
1424}
1425