tlb.cc revision 13912 
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/interrupts.hh"
38#include "arch/sparc/registers.hh"
39#include "base/bitfield.hh"
40#include "base/compiler.hh"
41#include "base/trace.hh"
42#include "cpu/base.hh"
43#include "cpu/thread_context.hh"
44#include "debug/IPR.hh"
45#include "debug/TLB.hh"
46#include "mem/packet_access.hh"
47#include "mem/request.hh"
48#include "sim/full_system.hh"
49#include "sim/system.hh"
50
51/* @todo remove some of the magic constants.  -- ali
52 * */
53namespace SparcISA {
54
55TLB::TLB(const Params *p)
56    : BaseTLB(p), size(p->size), usedEntries(0), lastReplaced(0),
57      cacheState(0), cacheValid(false)
58{
59    // To make this work you'll have to change the hypervisor and OS
60    if (size > 64)
61        fatal("SPARC T1 TLB registers don't support more than 64 TLB entries");
62
63    tlb = new TlbEntry[size];
64    std::memset(tlb, 0, sizeof(TlbEntry) * size);
65
66    for (int x = 0; x < size; x++)
67        freeList.push_back(&tlb[x]);
68
69    c0_tsb_ps0 = 0;
70    c0_tsb_ps1 = 0;
71    c0_config = 0;
72    cx_tsb_ps0 = 0;
73    cx_tsb_ps1 = 0;
74    cx_config = 0;
75    sfsr = 0;
76    tag_access = 0;
77    sfar = 0;
78    cacheEntry[0] = NULL;
79    cacheEntry[1] = NULL;
80}
81
82void
83TLB::clearUsedBits()
84{
85    MapIter i;
86    for (i = lookupTable.begin(); i != lookupTable.end(); i++) {
87        TlbEntry *t = i->second;
88        if (!t->pte.locked()) {
89            t->used = false;
90            usedEntries--;
91        }
92    }
93}
94
95
96void
97TLB::insert(Addr va, int partition_id, int context_id, bool real,
98        const PageTableEntry& PTE, int entry)
99{
100    MapIter i;
101    TlbEntry *new_entry = NULL;
102//    TlbRange tr;
103    int x;
104
105    cacheValid = false;
106    va &= ~(PTE.size()-1);
107 /*   tr.va = va;
108    tr.size = PTE.size() - 1;
109    tr.contextId = context_id;
110    tr.partitionId = partition_id;
111    tr.real = real;
112*/
113
114    DPRINTF(TLB,
115        "TLB: Inserting Entry; va=%#x pa=%#x pid=%d cid=%d r=%d entryid=%d\n",
116        va, PTE.paddr(), partition_id, context_id, (int)real, entry);
117
118    // Demap any entry that conflicts
119    for (x = 0; x < size; x++) {
120        if (tlb[x].range.real == real &&
121            tlb[x].range.partitionId == partition_id &&
122            tlb[x].range.va < va + PTE.size() - 1 &&
123            tlb[x].range.va + tlb[x].range.size >= va &&
124            (real || tlb[x].range.contextId == context_id ))
125        {
126            if (tlb[x].valid) {
127                freeList.push_front(&tlb[x]);
128                DPRINTF(TLB, "TLB: Conflicting entry %#X , deleting it\n", x);
129
130                tlb[x].valid = false;
131                if (tlb[x].used) {
132                    tlb[x].used = false;
133                    usedEntries--;
134                }
135                lookupTable.erase(tlb[x].range);
136            }
137        }
138    }
139
140    if (entry != -1) {
141        assert(entry < size && entry >= 0);
142        new_entry = &tlb[entry];
143    } else {
144        if (!freeList.empty()) {
145            new_entry = freeList.front();
146        } else {
147            x = lastReplaced;
148            do {
149                ++x;
150                if (x == size)
151                    x = 0;
152                if (x == lastReplaced)
153                    goto insertAllLocked;
154            } while (tlb[x].pte.locked());
155            lastReplaced = x;
156            new_entry = &tlb[x];
157        }
158    }
159
160insertAllLocked:
161    // Update the last ently if their all locked
162    if (!new_entry) {
163        new_entry = &tlb[size-1];
164    }
165
166    freeList.remove(new_entry);
167    if (new_entry->valid && new_entry->used)
168        usedEntries--;
169    if (new_entry->valid)
170        lookupTable.erase(new_entry->range);
171
172
173    assert(PTE.valid());
174    new_entry->range.va = va;
175    new_entry->range.size = PTE.size() - 1;
176    new_entry->range.partitionId = partition_id;
177    new_entry->range.contextId = context_id;
178    new_entry->range.real = real;
179    new_entry->pte = PTE;
180    new_entry->used = true;;
181    new_entry->valid = true;
182    usedEntries++;
183
184    i = lookupTable.insert(new_entry->range, new_entry);
185    assert(i != lookupTable.end());
186
187    // If all entries have their used bit set, clear it on them all,
188    // but the one we just inserted
189    if (usedEntries == size) {
190        clearUsedBits();
191        new_entry->used = true;
192        usedEntries++;
193    }
194}
195
196
197TlbEntry*
198TLB::lookup(Addr va, int partition_id, bool real, int context_id,
199            bool update_used)
200{
201    MapIter i;
202    TlbRange tr;
203    TlbEntry *t;
204
205    DPRINTF(TLB, "TLB: Looking up entry va=%#x pid=%d cid=%d r=%d\n",
206            va, partition_id, context_id, real);
207    // Assemble full address structure
208    tr.va = va;
209    tr.size = 1;
210    tr.contextId = context_id;
211    tr.partitionId = partition_id;
212    tr.real = real;
213
214    // Try to find the entry
215    i = lookupTable.find(tr);
216    if (i == lookupTable.end()) {
217        DPRINTF(TLB, "TLB: No valid entry found\n");
218        return NULL;
219    }
220
221    // Mark the entries used bit and clear other used bits in needed
222    t = i->second;
223    DPRINTF(TLB, "TLB: Valid entry found pa: %#x size: %#x\n", t->pte.paddr(),
224            t->pte.size());
225
226    // Update the used bits only if this is a real access (not a fake
227    // one from virttophys()
228    if (!t->used && update_used) {
229        t->used = true;
230        usedEntries++;
231        if (usedEntries == size) {
232            clearUsedBits();
233            t->used = true;
234            usedEntries++;
235        }
236    }
237
238    return t;
239}
240
241void
242TLB::dumpAll()
243{
244    MapIter i;
245    for (int x = 0; x < size; x++) {
246        if (tlb[x].valid) {
247           DPRINTFN("%4d:  %#2x:%#2x %c %#4x %#8x %#8x %#16x\n",
248                   x, tlb[x].range.partitionId, tlb[x].range.contextId,
249                   tlb[x].range.real ? 'R' : ' ', tlb[x].range.size,
250                   tlb[x].range.va, tlb[x].pte.paddr(), tlb[x].pte());
251        }
252    }
253}
254
255void
256TLB::demapPage(Addr va, int partition_id, bool real, int context_id)
257{
258    TlbRange tr;
259    MapIter i;
260
261    DPRINTF(IPR, "TLB: Demapping Page va=%#x pid=%#d cid=%d r=%d\n",
262            va, partition_id, context_id, real);
263
264    cacheValid = false;
265
266    // Assemble full address structure
267    tr.va = va;
268    tr.size = 1;
269    tr.contextId = context_id;
270    tr.partitionId = partition_id;
271    tr.real = real;
272
273    // Demap any entry that conflicts
274    i = lookupTable.find(tr);
275    if (i != lookupTable.end()) {
276        DPRINTF(IPR, "TLB: Demapped page\n");
277        i->second->valid = false;
278        if (i->second->used) {
279            i->second->used = false;
280            usedEntries--;
281        }
282        freeList.push_front(i->second);
283        lookupTable.erase(i);
284    }
285}
286
287void
288TLB::demapContext(int partition_id, int context_id)
289{
290    DPRINTF(IPR, "TLB: Demapping Context pid=%#d cid=%d\n",
291            partition_id, context_id);
292    cacheValid = false;
293    for (int x = 0; x < size; x++) {
294        if (tlb[x].range.contextId == context_id &&
295            tlb[x].range.partitionId == partition_id) {
296            if (tlb[x].valid) {
297                freeList.push_front(&tlb[x]);
298            }
299            tlb[x].valid = false;
300            if (tlb[x].used) {
301                tlb[x].used = false;
302                usedEntries--;
303            }
304            lookupTable.erase(tlb[x].range);
305        }
306    }
307}
308
309void
310TLB::demapAll(int partition_id)
311{
312    DPRINTF(TLB, "TLB: Demapping All pid=%#d\n", partition_id);
313    cacheValid = false;
314    for (int x = 0; x < size; x++) {
315        if (tlb[x].valid && !tlb[x].pte.locked() &&
316                tlb[x].range.partitionId == partition_id) {
317            freeList.push_front(&tlb[x]);
318            tlb[x].valid = false;
319            if (tlb[x].used) {
320                tlb[x].used = false;
321                usedEntries--;
322            }
323            lookupTable.erase(tlb[x].range);
324        }
325    }
326}
327
328void
329TLB::flushAll()
330{
331    cacheValid = false;
332    lookupTable.clear();
333
334    for (int x = 0; x < size; x++) {
335        if (tlb[x].valid)
336            freeList.push_back(&tlb[x]);
337        tlb[x].valid = false;
338        tlb[x].used = false;
339    }
340    usedEntries = 0;
341}
342
343uint64_t
344TLB::TteRead(int entry)
345{
346    if (entry >= size)
347        panic("entry: %d\n", entry);
348
349    assert(entry < size);
350    if (tlb[entry].valid)
351        return tlb[entry].pte();
352    else
353        return (uint64_t)-1ll;
354}
355
356uint64_t
357TLB::TagRead(int entry)
358{
359    assert(entry < size);
360    uint64_t tag;
361    if (!tlb[entry].valid)
362        return (uint64_t)-1ll;
363
364    tag = tlb[entry].range.contextId;
365    tag |= tlb[entry].range.va;
366    tag |= (uint64_t)tlb[entry].range.partitionId << 61;
367    tag |= tlb[entry].range.real ? ULL(1) << 60 : 0;
368    tag |= (uint64_t)~tlb[entry].pte._size() << 56;
369    return tag;
370}
371
372bool
373TLB::validVirtualAddress(Addr va, bool am)
374{
375    if (am)
376        return true;
377    if (va >= StartVAddrHole && va <= EndVAddrHole)
378        return false;
379    return true;
380}
381
382void
383TLB::writeSfsr(bool write, ContextType ct, bool se, FaultTypes ft, int asi)
384{
385    if (sfsr & 0x1)
386        sfsr = 0x3;
387    else
388        sfsr = 1;
389
390    if (write)
391        sfsr |= 1 << 2;
392    sfsr |= ct << 4;
393    if (se)
394        sfsr |= 1 << 6;
395    sfsr |= ft << 7;
396    sfsr |= asi << 16;
397}
398
399void
400TLB::writeTagAccess(Addr va, int context)
401{
402    DPRINTF(TLB, "TLB: Writing Tag Access: va: %#X ctx: %#X value: %#X\n",
403            va, context, mbits(va, 63,13) | mbits(context,12,0));
404
405    tag_access = mbits(va, 63,13) | mbits(context,12,0);
406}
407
408void
409TLB::writeSfsr(Addr a, bool write, ContextType ct,
410        bool se, FaultTypes ft, int asi)
411{
412    DPRINTF(TLB, "TLB: Fault: A=%#x w=%d ct=%d ft=%d asi=%d\n",
413            a, (int)write, ct, ft, asi);
414    TLB::writeSfsr(write, ct, se, ft, asi);
415    sfar = a;
416}
417
418Fault
419TLB::translateInst(const RequestPtr &req, ThreadContext *tc)
420{
421    uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA);
422
423    Addr vaddr = req->getVaddr();
424    TlbEntry *e;
425
426    assert(req->getArchFlags() == ASI_IMPLICIT);
427
428    DPRINTF(TLB, "TLB: ITB Request to translate va=%#x size=%d\n",
429            vaddr, req->getSize());
430
431    // Be fast if we can!
432    if (cacheValid && cacheState == tlbdata) {
433        if (cacheEntry[0]) {
434            if (cacheEntry[0]->range.va < vaddr + sizeof(MachInst) &&
435                cacheEntry[0]->range.va + cacheEntry[0]->range.size >= vaddr) {
436                req->setPaddr(cacheEntry[0]->pte.translate(vaddr));
437                return NoFault;
438            }
439        } else {
440            req->setPaddr(vaddr & PAddrImplMask);
441            return NoFault;
442        }
443    }
444
445    bool hpriv = bits(tlbdata,0,0);
446    bool red = bits(tlbdata,1,1);
447    bool priv = bits(tlbdata,2,2);
448    bool addr_mask = bits(tlbdata,3,3);
449    bool lsu_im = bits(tlbdata,4,4);
450
451    int part_id = bits(tlbdata,15,8);
452    int tl = bits(tlbdata,18,16);
453    int pri_context = bits(tlbdata,47,32);
454    int context;
455    ContextType ct;
456    int asi;
457    bool real = false;
458
459    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsuim:%d part_id: %#X\n",
460           priv, hpriv, red, lsu_im, part_id);
461
462    if (tl > 0) {
463        asi = ASI_N;
464        ct = Nucleus;
465        context = 0;
466    } else {
467        asi = ASI_P;
468        ct = Primary;
469        context = pri_context;
470    }
471
472    if ( hpriv || red ) {
473        cacheValid = true;
474        cacheState = tlbdata;
475        cacheEntry[0] = NULL;
476        req->setPaddr(vaddr & PAddrImplMask);
477        return NoFault;
478    }
479
480    // If the access is unaligned trap
481    if (vaddr & 0x3) {
482        writeSfsr(false, ct, false, OtherFault, asi);
483        return std::make_shared<MemAddressNotAligned>();
484    }
485
486    if (addr_mask)
487        vaddr = vaddr & VAddrAMask;
488
489    if (!validVirtualAddress(vaddr, addr_mask)) {
490        writeSfsr(false, ct, false, VaOutOfRange, asi);
491        return std::make_shared<InstructionAccessException>();
492    }
493
494    if (!lsu_im) {
495        e = lookup(vaddr, part_id, true);
496        real = true;
497        context = 0;
498    } else {
499        e = lookup(vaddr, part_id, false, context);
500    }
501
502    if (e == NULL || !e->valid) {
503        writeTagAccess(vaddr, context);
504        if (real) {
505            return std::make_shared<InstructionRealTranslationMiss>();
506        } else {
507            if (FullSystem)
508                return std::make_shared<FastInstructionAccessMMUMiss>();
509            else
510                return std::make_shared<FastInstructionAccessMMUMiss>(
511                    req->getVaddr());
512        }
513    }
514
515    // were not priviledged accesing priv page
516    if (!priv && e->pte.priv()) {
517        writeTagAccess(vaddr, context);
518        writeSfsr(false, ct, false, PrivViolation, asi);
519        return std::make_shared<InstructionAccessException>();
520    }
521
522    // cache translation date for next translation
523    cacheValid = true;
524    cacheState = tlbdata;
525    cacheEntry[0] = e;
526
527    req->setPaddr(e->pte.translate(vaddr));
528    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
529    return NoFault;
530}
531
532Fault
533TLB::translateData(const RequestPtr &req, ThreadContext *tc, bool write)
534{
535    /*
536     * @todo this could really use some profiling and fixing to make
537     * it faster!
538     */
539    uint64_t tlbdata = tc->readMiscRegNoEffect(MISCREG_TLB_DATA);
540    Addr vaddr = req->getVaddr();
541    Addr size = req->getSize();
542    ASI asi;
543    asi = (ASI)req->getArchFlags();
544    bool implicit = false;
545    bool hpriv = bits(tlbdata,0,0);
546    bool unaligned = vaddr & (size - 1);
547
548    DPRINTF(TLB, "TLB: DTB Request to translate va=%#x size=%d asi=%#x\n",
549            vaddr, size, asi);
550
551    if (lookupTable.size() != 64 - freeList.size())
552       panic("Lookup table size: %d tlb size: %d\n", lookupTable.size(),
553               freeList.size());
554    if (asi == ASI_IMPLICIT)
555        implicit = true;
556
557    // Only use the fast path here if there doesn't need to be an unaligned
558    // trap later
559    if (!unaligned) {
560        if (hpriv && implicit) {
561            req->setPaddr(vaddr & PAddrImplMask);
562            return NoFault;
563        }
564
565        // Be fast if we can!
566        if (cacheValid &&  cacheState == tlbdata) {
567
568
569
570            if (cacheEntry[0]) {
571                TlbEntry *ce = cacheEntry[0];
572                Addr ce_va = ce->range.va;
573                if (cacheAsi[0] == asi &&
574                    ce_va < vaddr + size && ce_va + ce->range.size > vaddr &&
575                    (!write || ce->pte.writable())) {
576                    req->setPaddr(ce->pte.translate(vaddr));
577                    if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) {
578                        req->setFlags(
579                            Request::UNCACHEABLE | Request::STRICT_ORDER);
580                    }
581                    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
582                    return NoFault;
583                } // if matched
584            } // if cache entry valid
585            if (cacheEntry[1]) {
586                TlbEntry *ce = cacheEntry[1];
587                Addr ce_va = ce->range.va;
588                if (cacheAsi[1] == asi &&
589                    ce_va < vaddr + size && ce_va + ce->range.size > vaddr &&
590                    (!write || ce->pte.writable())) {
591                    req->setPaddr(ce->pte.translate(vaddr));
592                    if (ce->pte.sideffect() || (ce->pte.paddr() >> 39) & 1) {
593                        req->setFlags(
594                            Request::UNCACHEABLE | Request::STRICT_ORDER);
595                    }
596                    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
597                    return NoFault;
598                } // if matched
599            } // if cache entry valid
600        }
601    }
602
603    bool red = bits(tlbdata,1,1);
604    bool priv = bits(tlbdata,2,2);
605    bool addr_mask = bits(tlbdata,3,3);
606    bool lsu_dm = bits(tlbdata,5,5);
607
608    int part_id = bits(tlbdata,15,8);
609    int tl = bits(tlbdata,18,16);
610    int pri_context = bits(tlbdata,47,32);
611    int sec_context = bits(tlbdata,63,48);
612
613    bool real = false;
614    ContextType ct = Primary;
615    int context = 0;
616
617    TlbEntry *e;
618
619    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsudm:%d part_id: %#X\n",
620            priv, hpriv, red, lsu_dm, part_id);
621
622    if (implicit) {
623        if (tl > 0) {
624            asi = ASI_N;
625            ct = Nucleus;
626            context = 0;
627        } else {
628            asi = ASI_P;
629            ct = Primary;
630            context = pri_context;
631        }
632    } else {
633        // We need to check for priv level/asi priv
634        if (!priv && !hpriv && !asiIsUnPriv(asi)) {
635            // It appears that context should be Nucleus in these cases?
636            writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi);
637            return std::make_shared<PrivilegedAction>();
638        }
639
640        if (!hpriv && asiIsHPriv(asi)) {
641            writeSfsr(vaddr, write, Nucleus, false, IllegalAsi, asi);
642            return std::make_shared<DataAccessException>();
643        }
644
645        if (asiIsPrimary(asi)) {
646            context = pri_context;
647            ct = Primary;
648        } else if (asiIsSecondary(asi)) {
649            context = sec_context;
650            ct = Secondary;
651        } else if (asiIsNucleus(asi)) {
652            ct = Nucleus;
653            context = 0;
654        } else {  // ????
655            ct = Primary;
656            context = pri_context;
657        }
658    }
659
660    if (!implicit && asi != ASI_P && asi != ASI_S) {
661        if (asiIsLittle(asi))
662            panic("Little Endian ASIs not supported\n");
663
664        //XXX It's unclear from looking at the documentation how a no fault
665        // load differs from a regular one, other than what happens concerning
666        // nfo and e bits in the TTE
667//        if (asiIsNoFault(asi))
668//            panic("No Fault ASIs not supported\n");
669
670        if (asiIsPartialStore(asi))
671            panic("Partial Store ASIs not supported\n");
672
673        if (asiIsCmt(asi))
674            panic("Cmt ASI registers not implmented\n");
675
676        if (asiIsInterrupt(asi))
677            goto handleIntRegAccess;
678        if (asiIsMmu(asi))
679            goto handleMmuRegAccess;
680        if (asiIsScratchPad(asi))
681            goto handleScratchRegAccess;
682        if (asiIsQueue(asi))
683            goto handleQueueRegAccess;
684        if (asiIsSparcError(asi))
685            goto handleSparcErrorRegAccess;
686
687        if (!asiIsReal(asi) && !asiIsNucleus(asi) && !asiIsAsIfUser(asi) &&
688                !asiIsTwin(asi) && !asiIsBlock(asi) && !asiIsNoFault(asi))
689            panic("Accessing ASI %#X. Should we?\n", asi);
690    }
691
692    // If the asi is unaligned trap
693    if (unaligned) {
694        writeSfsr(vaddr, false, ct, false, OtherFault, asi);
695        return std::make_shared<MemAddressNotAligned>();
696    }
697
698    if (addr_mask)
699        vaddr = vaddr & VAddrAMask;
700
701    if (!validVirtualAddress(vaddr, addr_mask)) {
702        writeSfsr(vaddr, false, ct, true, VaOutOfRange, asi);
703        return std::make_shared<DataAccessException>();
704    }
705
706    if ((!lsu_dm && !hpriv && !red) || asiIsReal(asi)) {
707        real = true;
708        context = 0;
709    }
710
711    if (hpriv && (implicit || (!asiIsAsIfUser(asi) && !asiIsReal(asi)))) {
712        req->setPaddr(vaddr & PAddrImplMask);
713        return NoFault;
714    }
715
716    e = lookup(vaddr, part_id, real, context);
717
718    if (e == NULL || !e->valid) {
719        writeTagAccess(vaddr, context);
720        DPRINTF(TLB, "TLB: DTB Failed to find matching TLB entry\n");
721        if (real) {
722            return std::make_shared<DataRealTranslationMiss>();
723        } else {
724            if (FullSystem)
725                return std::make_shared<FastDataAccessMMUMiss>();
726            else
727                return std::make_shared<FastDataAccessMMUMiss>(
728                    req->getVaddr());
729        }
730
731    }
732
733    if (!priv && e->pte.priv()) {
734        writeTagAccess(vaddr, context);
735        writeSfsr(vaddr, write, ct, e->pte.sideffect(), PrivViolation, asi);
736        return std::make_shared<DataAccessException>();
737    }
738
739    if (write && !e->pte.writable()) {
740        writeTagAccess(vaddr, context);
741        writeSfsr(vaddr, write, ct, e->pte.sideffect(), OtherFault, asi);
742        return std::make_shared<FastDataAccessProtection>();
743    }
744
745    if (e->pte.nofault() && !asiIsNoFault(asi)) {
746        writeTagAccess(vaddr, context);
747        writeSfsr(vaddr, write, ct, e->pte.sideffect(), LoadFromNfo, asi);
748        return std::make_shared<DataAccessException>();
749    }
750
751    if (e->pte.sideffect() && asiIsNoFault(asi)) {
752        writeTagAccess(vaddr, context);
753        writeSfsr(vaddr, write, ct, e->pte.sideffect(), SideEffect, asi);
754        return std::make_shared<DataAccessException>();
755    }
756
757    if (e->pte.sideffect() || (e->pte.paddr() >> 39) & 1)
758        req->setFlags(Request::UNCACHEABLE | Request::STRICT_ORDER);
759
760    // cache translation date for next translation
761    cacheState = tlbdata;
762    if (!cacheValid) {
763        cacheEntry[1] = NULL;
764        cacheEntry[0] = NULL;
765    }
766
767    if (cacheEntry[0] != e && cacheEntry[1] != e) {
768        cacheEntry[1] = cacheEntry[0];
769        cacheEntry[0] = e;
770        cacheAsi[1] = cacheAsi[0];
771        cacheAsi[0] = asi;
772        if (implicit)
773            cacheAsi[0] = (ASI)0;
774    }
775    cacheValid = true;
776    req->setPaddr(e->pte.translate(vaddr));
777    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
778    return NoFault;
779
780    /** Normal flow ends here. */
781handleIntRegAccess:
782    if (!hpriv) {
783        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
784        if (priv)
785            return std::make_shared<DataAccessException>();
786         else
787             return std::make_shared<PrivilegedAction>();
788    }
789
790    if ((asi == ASI_SWVR_UDB_INTR_W && !write) ||
791        (asi == ASI_SWVR_UDB_INTR_R && write)) {
792        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
793        return std::make_shared<DataAccessException>();
794    }
795
796    goto regAccessOk;
797
798
799handleScratchRegAccess:
800    if (vaddr > 0x38 || (vaddr >= 0x20 && vaddr < 0x30 && !hpriv)) {
801        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
802        return std::make_shared<DataAccessException>();
803    }
804    goto regAccessOk;
805
806handleQueueRegAccess:
807    if (!priv  && !hpriv) {
808        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
809        return std::make_shared<PrivilegedAction>();
810    }
811    if ((!hpriv && vaddr & 0xF) || vaddr > 0x3f8 || vaddr < 0x3c0) {
812        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
813        return std::make_shared<DataAccessException>();
814    }
815    goto regAccessOk;
816
817handleSparcErrorRegAccess:
818    if (!hpriv) {
819        writeSfsr(vaddr, write, Primary, true, IllegalAsi, asi);
820        if (priv)
821            return std::make_shared<DataAccessException>();
822         else
823             return std::make_shared<PrivilegedAction>();
824    }
825    goto regAccessOk;
826
827
828regAccessOk:
829handleMmuRegAccess:
830    DPRINTF(TLB, "TLB: DTB Translating MM IPR access\n");
831    req->setFlags(Request::MMAPPED_IPR);
832    req->setPaddr(req->getVaddr());
833    return NoFault;
834};
835
836Fault
837TLB::translateAtomic(const RequestPtr &req, ThreadContext *tc, Mode mode)
838{
839    if (mode == Execute)
840        return translateInst(req, tc);
841    else
842        return translateData(req, tc, mode == Write);
843}
844
845void
846TLB::translateTiming(const RequestPtr &req, ThreadContext *tc,
847        Translation *translation, Mode mode)
848{
849    assert(translation);
850    translation->finish(translateAtomic(req, tc, mode), req, tc, mode);
851}
852
853Fault
854TLB::finalizePhysical(const RequestPtr &req,
855                      ThreadContext *tc, Mode mode) const
856{
857    return NoFault;
858}
859
860Cycles
861TLB::doMmuRegRead(ThreadContext *tc, Packet *pkt)
862{
863    Addr va = pkt->getAddr();
864    ASI asi = (ASI)pkt->req->getArchFlags();
865    uint64_t temp;
866
867    DPRINTF(IPR, "Memory Mapped IPR Read: asi=%#X a=%#x\n",
868         (uint32_t)pkt->req->getArchFlags(), pkt->getAddr());
869
870    TLB *itb = dynamic_cast<TLB *>(tc->getITBPtr());
871
872    switch (asi) {
873      case ASI_LSU_CONTROL_REG:
874        assert(va == 0);
875        pkt->setBE(tc->readMiscReg(MISCREG_MMU_LSU_CTRL));
876        break;
877      case ASI_MMU:
878        switch (va) {
879          case 0x8:
880            pkt->setBE(tc->readMiscReg(MISCREG_MMU_P_CONTEXT));
881            break;
882          case 0x10:
883            pkt->setBE(tc->readMiscReg(MISCREG_MMU_S_CONTEXT));
884            break;
885          default:
886            goto doMmuReadError;
887        }
888        break;
889      case ASI_QUEUE:
890        pkt->setBE(tc->readMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD +
891                    (va >> 4) - 0x3c));
892        break;
893      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
894        assert(va == 0);
895        pkt->setBE(c0_tsb_ps0);
896        break;
897      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
898        assert(va == 0);
899        pkt->setBE(c0_tsb_ps1);
900        break;
901      case ASI_DMMU_CTXT_ZERO_CONFIG:
902        assert(va == 0);
903        pkt->setBE(c0_config);
904        break;
905      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
906        assert(va == 0);
907        pkt->setBE(itb->c0_tsb_ps0);
908        break;
909      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
910        assert(va == 0);
911        pkt->setBE(itb->c0_tsb_ps1);
912        break;
913      case ASI_IMMU_CTXT_ZERO_CONFIG:
914        assert(va == 0);
915        pkt->setBE(itb->c0_config);
916        break;
917      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
918        assert(va == 0);
919        pkt->setBE(cx_tsb_ps0);
920        break;
921      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
922        assert(va == 0);
923        pkt->setBE(cx_tsb_ps1);
924        break;
925      case ASI_DMMU_CTXT_NONZERO_CONFIG:
926        assert(va == 0);
927        pkt->setBE(cx_config);
928        break;
929      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
930        assert(va == 0);
931        pkt->setBE(itb->cx_tsb_ps0);
932        break;
933      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
934        assert(va == 0);
935        pkt->setBE(itb->cx_tsb_ps1);
936        break;
937      case ASI_IMMU_CTXT_NONZERO_CONFIG:
938        assert(va == 0);
939        pkt->setBE(itb->cx_config);
940        break;
941      case ASI_SPARC_ERROR_STATUS_REG:
942        pkt->setBE((uint64_t)0);
943        break;
944      case ASI_HYP_SCRATCHPAD:
945      case ASI_SCRATCHPAD:
946        pkt->setBE(tc->readMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3)));
947        break;
948      case ASI_IMMU:
949        switch (va) {
950          case 0x0:
951            temp = itb->tag_access;
952            pkt->setBE(bits(temp,63,22) | bits(temp,12,0) << 48);
953            break;
954          case 0x18:
955            pkt->setBE(itb->sfsr);
956            break;
957          case 0x30:
958            pkt->setBE(itb->tag_access);
959            break;
960          default:
961            goto doMmuReadError;
962        }
963        break;
964      case ASI_DMMU:
965        switch (va) {
966          case 0x0:
967            temp = tag_access;
968            pkt->setBE(bits(temp,63,22) | bits(temp,12,0) << 48);
969            break;
970          case 0x18:
971            pkt->setBE(sfsr);
972            break;
973          case 0x20:
974            pkt->setBE(sfar);
975            break;
976          case 0x30:
977            pkt->setBE(tag_access);
978            break;
979          case 0x80:
980            pkt->setBE(tc->readMiscReg(MISCREG_MMU_PART_ID));
981            break;
982          default:
983                goto doMmuReadError;
984        }
985        break;
986      case ASI_DMMU_TSB_PS0_PTR_REG:
987        pkt->setBE(MakeTsbPtr(Ps0,
988            tag_access,
989            c0_tsb_ps0,
990            c0_config,
991            cx_tsb_ps0,
992            cx_config));
993        break;
994      case ASI_DMMU_TSB_PS1_PTR_REG:
995        pkt->setBE(MakeTsbPtr(Ps1,
996                tag_access,
997                c0_tsb_ps1,
998                c0_config,
999                cx_tsb_ps1,
1000                cx_config));
1001        break;
1002      case ASI_IMMU_TSB_PS0_PTR_REG:
1003          pkt->setBE(MakeTsbPtr(Ps0,
1004                itb->tag_access,
1005                itb->c0_tsb_ps0,
1006                itb->c0_config,
1007                itb->cx_tsb_ps0,
1008                itb->cx_config));
1009        break;
1010      case ASI_IMMU_TSB_PS1_PTR_REG:
1011          pkt->setBE(MakeTsbPtr(Ps1,
1012                itb->tag_access,
1013                itb->c0_tsb_ps1,
1014                itb->c0_config,
1015                itb->cx_tsb_ps1,
1016                itb->cx_config));
1017        break;
1018      case ASI_SWVR_INTR_RECEIVE:
1019        {
1020            SparcISA::Interrupts * interrupts =
1021                dynamic_cast<SparcISA::Interrupts *>(
1022                        tc->getCpuPtr()->getInterruptController(0));
1023            pkt->setBE(interrupts->get_vec(IT_INT_VEC));
1024        }
1025        break;
1026      case ASI_SWVR_UDB_INTR_R:
1027        {
1028            SparcISA::Interrupts * interrupts =
1029                dynamic_cast<SparcISA::Interrupts *>(
1030                        tc->getCpuPtr()->getInterruptController(0));
1031            temp = findMsbSet(interrupts->get_vec(IT_INT_VEC));
1032            tc->getCpuPtr()->clearInterrupt(0, IT_INT_VEC, temp);
1033            pkt->setBE(temp);
1034        }
1035        break;
1036      default:
1037doMmuReadError:
1038        panic("need to impl DTB::doMmuRegRead() got asi=%#x, va=%#x\n",
1039            (uint32_t)asi, va);
1040    }
1041    pkt->makeAtomicResponse();
1042    return Cycles(1);
1043}
1044
1045Cycles
1046TLB::doMmuRegWrite(ThreadContext *tc, Packet *pkt)
1047{
1048    uint64_t data = pkt->getBE<uint64_t>();
1049    Addr va = pkt->getAddr();
1050    ASI asi = (ASI)pkt->req->getArchFlags();
1051
1052    Addr ta_insert;
1053    Addr va_insert;
1054    Addr ct_insert;
1055    int part_insert;
1056    int entry_insert = -1;
1057    bool real_insert;
1058    bool ignore;
1059    int part_id;
1060    int ctx_id;
1061    PageTableEntry pte;
1062
1063    DPRINTF(IPR, "Memory Mapped IPR Write: asi=%#X a=%#x d=%#X\n",
1064         (uint32_t)asi, va, data);
1065
1066    TLB *itb = dynamic_cast<TLB *>(tc->getITBPtr());
1067
1068    switch (asi) {
1069      case ASI_LSU_CONTROL_REG:
1070        assert(va == 0);
1071        tc->setMiscReg(MISCREG_MMU_LSU_CTRL, data);
1072        break;
1073      case ASI_MMU:
1074        switch (va) {
1075          case 0x8:
1076            tc->setMiscReg(MISCREG_MMU_P_CONTEXT, data);
1077            break;
1078          case 0x10:
1079            tc->setMiscReg(MISCREG_MMU_S_CONTEXT, data);
1080            break;
1081          default:
1082            goto doMmuWriteError;
1083        }
1084        break;
1085      case ASI_QUEUE:
1086        assert(mbits(data,13,6) == data);
1087        tc->setMiscReg(MISCREG_QUEUE_CPU_MONDO_HEAD +
1088                    (va >> 4) - 0x3c, data);
1089        break;
1090      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
1091        assert(va == 0);
1092        c0_tsb_ps0 = data;
1093        break;
1094      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
1095        assert(va == 0);
1096        c0_tsb_ps1 = data;
1097        break;
1098      case ASI_DMMU_CTXT_ZERO_CONFIG:
1099        assert(va == 0);
1100        c0_config = data;
1101        break;
1102      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
1103        assert(va == 0);
1104        itb->c0_tsb_ps0 = data;
1105        break;
1106      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
1107        assert(va == 0);
1108        itb->c0_tsb_ps1 = data;
1109        break;
1110      case ASI_IMMU_CTXT_ZERO_CONFIG:
1111        assert(va == 0);
1112        itb->c0_config = data;
1113        break;
1114      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
1115        assert(va == 0);
1116        cx_tsb_ps0 = data;
1117        break;
1118      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
1119        assert(va == 0);
1120        cx_tsb_ps1 = data;
1121        break;
1122      case ASI_DMMU_CTXT_NONZERO_CONFIG:
1123        assert(va == 0);
1124        cx_config = data;
1125        break;
1126      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
1127        assert(va == 0);
1128        itb->cx_tsb_ps0 = data;
1129        break;
1130      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
1131        assert(va == 0);
1132        itb->cx_tsb_ps1 = data;
1133        break;
1134      case ASI_IMMU_CTXT_NONZERO_CONFIG:
1135        assert(va == 0);
1136        itb->cx_config = data;
1137        break;
1138      case ASI_SPARC_ERROR_EN_REG:
1139      case ASI_SPARC_ERROR_STATUS_REG:
1140        inform("Ignoring write to SPARC ERROR regsiter\n");
1141        break;
1142      case ASI_HYP_SCRATCHPAD:
1143      case ASI_SCRATCHPAD:
1144        tc->setMiscReg(MISCREG_SCRATCHPAD_R0 + (va >> 3), data);
1145        break;
1146      case ASI_IMMU:
1147        switch (va) {
1148          case 0x18:
1149            itb->sfsr = data;
1150            break;
1151          case 0x30:
1152            sext<59>(bits(data, 59,0));
1153            itb->tag_access = data;
1154            break;
1155          default:
1156            goto doMmuWriteError;
1157        }
1158        break;
1159      case ASI_ITLB_DATA_ACCESS_REG:
1160        entry_insert = bits(va, 8,3);
1161        M5_FALLTHROUGH;
1162      case ASI_ITLB_DATA_IN_REG:
1163        assert(entry_insert != -1 || mbits(va,10,9) == va);
1164        ta_insert = itb->tag_access;
1165        va_insert = mbits(ta_insert, 63,13);
1166        ct_insert = mbits(ta_insert, 12,0);
1167        part_insert = tc->readMiscReg(MISCREG_MMU_PART_ID);
1168        real_insert = bits(va, 9,9);
1169        pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v :
1170                PageTableEntry::sun4u);
1171        itb->insert(va_insert, part_insert, ct_insert, real_insert,
1172                    pte, entry_insert);
1173        break;
1174      case ASI_DTLB_DATA_ACCESS_REG:
1175        entry_insert = bits(va, 8,3);
1176        M5_FALLTHROUGH;
1177      case ASI_DTLB_DATA_IN_REG:
1178        assert(entry_insert != -1 || mbits(va,10,9) == va);
1179        ta_insert = tag_access;
1180        va_insert = mbits(ta_insert, 63,13);
1181        ct_insert = mbits(ta_insert, 12,0);
1182        part_insert = tc->readMiscReg(MISCREG_MMU_PART_ID);
1183        real_insert = bits(va, 9,9);
1184        pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v :
1185                PageTableEntry::sun4u);
1186        insert(va_insert, part_insert, ct_insert, real_insert, pte,
1187               entry_insert);
1188        break;
1189      case ASI_IMMU_DEMAP:
1190        ignore = false;
1191        ctx_id = -1;
1192        part_id =  tc->readMiscReg(MISCREG_MMU_PART_ID);
1193        switch (bits(va,5,4)) {
1194          case 0:
1195            ctx_id = tc->readMiscReg(MISCREG_MMU_P_CONTEXT);
1196            break;
1197          case 1:
1198            ignore = true;
1199            break;
1200          case 3:
1201            ctx_id = 0;
1202            break;
1203          default:
1204            ignore = true;
1205        }
1206
1207        switch (bits(va,7,6)) {
1208          case 0: // demap page
1209            if (!ignore)
1210                itb->demapPage(mbits(va,63,13), part_id, bits(va,9,9), ctx_id);
1211            break;
1212          case 1: // demap context
1213            if (!ignore)
1214                itb->demapContext(part_id, ctx_id);
1215            break;
1216          case 2:
1217            itb->demapAll(part_id);
1218            break;
1219          default:
1220            panic("Invalid type for IMMU demap\n");
1221        }
1222        break;
1223      case ASI_DMMU:
1224        switch (va) {
1225          case 0x18:
1226            sfsr = data;
1227            break;
1228          case 0x30:
1229            sext<59>(bits(data, 59,0));
1230            tag_access = data;
1231            break;
1232          case 0x80:
1233            tc->setMiscReg(MISCREG_MMU_PART_ID, data);
1234            break;
1235          default:
1236            goto doMmuWriteError;
1237        }
1238        break;
1239      case ASI_DMMU_DEMAP:
1240        ignore = false;
1241        ctx_id = -1;
1242        part_id =  tc->readMiscReg(MISCREG_MMU_PART_ID);
1243        switch (bits(va,5,4)) {
1244          case 0:
1245            ctx_id = tc->readMiscReg(MISCREG_MMU_P_CONTEXT);
1246            break;
1247          case 1:
1248            ctx_id = tc->readMiscReg(MISCREG_MMU_S_CONTEXT);
1249            break;
1250          case 3:
1251            ctx_id = 0;
1252            break;
1253          default:
1254            ignore = true;
1255        }
1256
1257        switch (bits(va,7,6)) {
1258          case 0: // demap page
1259            if (!ignore)
1260                demapPage(mbits(va,63,13), part_id, bits(va,9,9), ctx_id);
1261            break;
1262          case 1: // demap context
1263            if (!ignore)
1264                demapContext(part_id, ctx_id);
1265            break;
1266          case 2:
1267            demapAll(part_id);
1268            break;
1269          default:
1270            panic("Invalid type for IMMU demap\n");
1271        }
1272        break;
1273       case ASI_SWVR_INTR_RECEIVE:
1274        {
1275            int msb;
1276            // clear all the interrupts that aren't set in the write
1277            SparcISA::Interrupts * interrupts =
1278                dynamic_cast<SparcISA::Interrupts *>(
1279                        tc->getCpuPtr()->getInterruptController(0));
1280            while (interrupts->get_vec(IT_INT_VEC) & data) {
1281                msb = findMsbSet(interrupts->get_vec(IT_INT_VEC) & data);
1282                tc->getCpuPtr()->clearInterrupt(0, IT_INT_VEC, msb);
1283            }
1284        }
1285        break;
1286      case ASI_SWVR_UDB_INTR_W:
1287            tc->getSystemPtr()->threadContexts[bits(data,12,8)]->getCpuPtr()->
1288            postInterrupt(0, bits(data, 5, 0), 0);
1289        break;
1290      default:
1291doMmuWriteError:
1292        panic("need to impl DTB::doMmuRegWrite() got asi=%#x, va=%#x d=%#x\n",
1293            (uint32_t)pkt->req->getArchFlags(), pkt->getAddr(), data);
1294    }
1295    pkt->makeAtomicResponse();
1296    return Cycles(1);
1297}
1298
1299void
1300TLB::GetTsbPtr(ThreadContext *tc, Addr addr, int ctx, Addr *ptrs)
1301{
1302    uint64_t tag_access = mbits(addr,63,13) | mbits(ctx,12,0);
1303    TLB *itb = dynamic_cast<TLB *>(tc->getITBPtr());
1304    ptrs[0] = MakeTsbPtr(Ps0, tag_access,
1305                c0_tsb_ps0,
1306                c0_config,
1307                cx_tsb_ps0,
1308                cx_config);
1309    ptrs[1] = MakeTsbPtr(Ps1, tag_access,
1310                c0_tsb_ps1,
1311                c0_config,
1312                cx_tsb_ps1,
1313                cx_config);
1314    ptrs[2] = MakeTsbPtr(Ps0, tag_access,
1315                itb->c0_tsb_ps0,
1316                itb->c0_config,
1317                itb->cx_tsb_ps0,
1318                itb->cx_config);
1319    ptrs[3] = MakeTsbPtr(Ps1, tag_access,
1320                itb->c0_tsb_ps1,
1321                itb->c0_config,
1322                itb->cx_tsb_ps1,
1323                itb->cx_config);
1324}
1325
1326uint64_t
1327TLB::MakeTsbPtr(TsbPageSize ps, uint64_t tag_access, uint64_t c0_tsb,
1328        uint64_t c0_config, uint64_t cX_tsb, uint64_t cX_config)
1329{
1330    uint64_t tsb;
1331    uint64_t config;
1332
1333    if (bits(tag_access, 12,0) == 0) {
1334        tsb = c0_tsb;
1335        config = c0_config;
1336    } else {
1337        tsb = cX_tsb;
1338        config = cX_config;
1339    }
1340
1341    uint64_t ptr = mbits(tsb,63,13);
1342    bool split = bits(tsb,12,12);
1343    int tsb_size = bits(tsb,3,0);
1344    int page_size = (ps == Ps0) ? bits(config, 2,0) : bits(config,10,8);
1345
1346    if (ps == Ps1  && split)
1347        ptr |= ULL(1) << (13 + tsb_size);
1348    ptr |= (tag_access >> (9 + page_size * 3)) & mask(12+tsb_size, 4);
1349
1350    return ptr;
1351}
1352
1353void
1354TLB::serialize(CheckpointOut &cp) const
1355{
1356    SERIALIZE_SCALAR(size);
1357    SERIALIZE_SCALAR(usedEntries);
1358    SERIALIZE_SCALAR(lastReplaced);
1359
1360    // convert the pointer based free list into an index based one
1361    std::vector<int> free_list;
1362    for (const TlbEntry *entry : freeList)
1363        free_list.push_back(entry - tlb);
1364
1365    SERIALIZE_CONTAINER(free_list);
1366
1367    SERIALIZE_SCALAR(c0_tsb_ps0);
1368    SERIALIZE_SCALAR(c0_tsb_ps1);
1369    SERIALIZE_SCALAR(c0_config);
1370    SERIALIZE_SCALAR(cx_tsb_ps0);
1371    SERIALIZE_SCALAR(cx_tsb_ps1);
1372    SERIALIZE_SCALAR(cx_config);
1373    SERIALIZE_SCALAR(sfsr);
1374    SERIALIZE_SCALAR(tag_access);
1375    SERIALIZE_SCALAR(sfar);
1376
1377    for (int x = 0; x < size; x++) {
1378        ScopedCheckpointSection sec(cp, csprintf("PTE%d", x));
1379        tlb[x].serialize(cp);
1380    }
1381}
1382
1383void
1384TLB::unserialize(CheckpointIn &cp)
1385{
1386    int oldSize;
1387
1388    paramIn(cp, "size", oldSize);
1389    if (oldSize != size)
1390        panic("Don't support unserializing different sized TLBs\n");
1391    UNSERIALIZE_SCALAR(usedEntries);
1392    UNSERIALIZE_SCALAR(lastReplaced);
1393
1394    std::vector<int> free_list;
1395    UNSERIALIZE_CONTAINER(free_list);
1396    freeList.clear();
1397    for (int idx : free_list)
1398        freeList.push_back(&tlb[idx]);
1399
1400    UNSERIALIZE_SCALAR(c0_tsb_ps0);
1401    UNSERIALIZE_SCALAR(c0_tsb_ps1);
1402    UNSERIALIZE_SCALAR(c0_config);
1403    UNSERIALIZE_SCALAR(cx_tsb_ps0);
1404    UNSERIALIZE_SCALAR(cx_tsb_ps1);
1405    UNSERIALIZE_SCALAR(cx_config);
1406    UNSERIALIZE_SCALAR(sfsr);
1407    UNSERIALIZE_SCALAR(tag_access);
1408
1409    lookupTable.clear();
1410    for (int x = 0; x < size; x++) {
1411        ScopedCheckpointSection sec(cp, csprintf("PTE%d", x));
1412        tlb[x].unserialize(cp);
1413        if (tlb[x].valid)
1414            lookupTable.insert(tlb[x].range, &tlb[x]);
1415
1416    }
1417    UNSERIALIZE_SCALAR(sfar);
1418}
1419
1420} // namespace SparcISA
1421
1422SparcISA::TLB *
1423SparcTLBParams::create()
1424{
1425    return new SparcISA::TLB(this);
1426}
1427