tlb.cc revision 3916 
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/asi.hh"
32#include "arch/sparc/miscregfile.hh"
33#include "arch/sparc/tlb.hh"
34#include "base/bitfield.hh"
35#include "base/trace.hh"
36#include "cpu/thread_context.hh"
37#include "cpu/base.hh"
38#include "mem/packet_access.hh"
39#include "mem/request.hh"
40#include "sim/builder.hh"
41
42/* @todo remove some of the magic constants.  -- ali
43 * */
44namespace SparcISA
45{
46
47TLB::TLB(const std::string &name, int s)
48    : SimObject(name), size(s), usedEntries(0), lastReplaced(0),
49      cacheValid(false)
50{
51    // To make this work you'll have to change the hypervisor and OS
52    if (size > 64)
53        fatal("SPARC T1 TLB registers don't support more than 64 TLB entries.");
54
55    tlb = new TlbEntry[size];
56    memset(tlb, 0, sizeof(TlbEntry) * size);
57
58    for (int x = 0; x < size; x++)
59        freeList.push_back(&tlb[x]);
60}
61
62void
63TLB::clearUsedBits()
64{
65    MapIter i;
66    for (i = lookupTable.begin(); i != lookupTable.end(); i++) {
67        TlbEntry *t = i->second;
68        if (!t->pte.locked()) {
69            t->used = false;
70            usedEntries--;
71        }
72    }
73}
74
75
76void
77TLB::insert(Addr va, int partition_id, int context_id, bool real,
78        const PageTableEntry& PTE, int entry)
79{
80
81
82    MapIter i;
83    TlbEntry *new_entry = NULL;
84//    TlbRange tr;
85    int x;
86
87    cacheValid = false;
88    va &= ~(PTE.size()-1);
89 /*   tr.va = va;
90    tr.size = PTE.size() - 1;
91    tr.contextId = context_id;
92    tr.partitionId = partition_id;
93    tr.real = real;
94*/
95
96    DPRINTF(TLB, "TLB: Inserting TLB Entry; va=%#x pa=%#x pid=%d cid=%d r=%d entryid=%d\n",
97            va, PTE.paddr(), partition_id, context_id, (int)real, entry);
98
99    // Demap any entry that conflicts
100    for (x = 0; x < size; x++) {
101        if (tlb[x].range.real == real &&
102            tlb[x].range.partitionId == partition_id &&
103            tlb[x].range.va < va + PTE.size() - 1 &&
104            tlb[x].range.va + tlb[x].range.size >= va &&
105            (real || tlb[x].range.contextId == context_id ))
106        {
107            if (tlb[x].valid) {
108                freeList.push_front(&tlb[x]);
109                DPRINTF(TLB, "TLB: Conflicting entry %#X , deleting it\n", x);
110
111                tlb[x].valid = false;
112                if (tlb[x].used) {
113                    tlb[x].used = false;
114                    usedEntries--;
115                }
116                lookupTable.erase(tlb[x].range);
117            }
118        }
119    }
120
121
122/*
123    i = lookupTable.find(tr);
124    if (i != lookupTable.end()) {
125        i->second->valid = false;
126        if (i->second->used) {
127            i->second->used = false;
128            usedEntries--;
129        }
130        freeList.push_front(i->second);
131        DPRINTF(TLB, "TLB: Found conflicting entry %#X , deleting it\n",
132                i->second);
133        lookupTable.erase(i);
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        for (x = 0; x < size; x++) {
157            if (!tlb[x].valid || !tlb[x].used)  {
158                new_entry = &tlb[x];
159                break;
160            }
161        }*/
162    }
163
164insertAllLocked:
165    // Update the last ently if their all locked
166    if (!new_entry) {
167        new_entry = &tlb[size-1];
168    }
169
170    freeList.remove(new_entry);
171    if (new_entry->valid && new_entry->used)
172        usedEntries--;
173
174    lookupTable.erase(new_entry->range);
175
176
177    DPRINTF(TLB, "Using entry: %#X\n", new_entry);
178
179    assert(PTE.valid());
180    new_entry->range.va = va;
181    new_entry->range.size = PTE.size() - 1;
182    new_entry->range.partitionId = partition_id;
183    new_entry->range.contextId = context_id;
184    new_entry->range.real = real;
185    new_entry->pte = PTE;
186    new_entry->used = true;;
187    new_entry->valid = true;
188    usedEntries++;
189
190
191
192    i = lookupTable.insert(new_entry->range, new_entry);
193    assert(i != lookupTable.end());
194
195    // If all entries have there used bit set, clear it on them all, but the
196    // one we just inserted
197    if (usedEntries == size) {
198        clearUsedBits();
199        new_entry->used = true;
200        usedEntries++;
201    }
202
203}
204
205
206TlbEntry*
207TLB::lookup(Addr va, int partition_id, bool real, int context_id)
208{
209    MapIter i;
210    TlbRange tr;
211    TlbEntry *t;
212
213    DPRINTF(TLB, "TLB: Looking up entry va=%#x pid=%d cid=%d r=%d\n",
214            va, partition_id, context_id, real);
215    // Assemble full address structure
216    tr.va = va;
217    tr.size = MachineBytes;
218    tr.contextId = context_id;
219    tr.partitionId = partition_id;
220    tr.real = real;
221
222    // Try to find the entry
223    i = lookupTable.find(tr);
224    if (i == lookupTable.end()) {
225        DPRINTF(TLB, "TLB: No valid entry found\n");
226        return NULL;
227    }
228
229    // Mark the entries used bit and clear other used bits in needed
230    t = i->second;
231    DPRINTF(TLB, "TLB: Valid entry found pa: %#x size: %#x\n", t->pte.paddr(),
232            t->pte.size());
233    if (!t->used) {
234        t->used = true;
235        usedEntries++;
236        if (usedEntries == size) {
237            clearUsedBits();
238            t->used = true;
239            usedEntries++;
240        }
241    }
242
243    return t;
244}
245
246void
247TLB::dumpAll()
248{
249    MapIter i;
250    for (int x = 0; x < size; x++) {
251        if (tlb[x].valid) {
252           DPRINTFN("%4d:  %#2x:%#2x %c %#4x %#8x %#8x %#16x\n",
253                   x, tlb[x].range.partitionId, tlb[x].range.contextId,
254                   tlb[x].range.real ? 'R' : ' ', tlb[x].range.size,
255                   tlb[x].range.va, tlb[x].pte.paddr(), tlb[x].pte());
256        }
257    }
258}
259
260void
261TLB::demapPage(Addr va, int partition_id, bool real, int context_id)
262{
263    TlbRange tr;
264    MapIter i;
265
266    DPRINTF(IPR, "TLB: Demapping Page va=%#x pid=%#d cid=%d r=%d\n",
267            va, partition_id, context_id, real);
268
269    cacheValid = false;
270
271    // Assemble full address structure
272    tr.va = va;
273    tr.size = MachineBytes;
274    tr.contextId = context_id;
275    tr.partitionId = partition_id;
276    tr.real = real;
277
278    // Demap any entry that conflicts
279    i = lookupTable.find(tr);
280    if (i != lookupTable.end()) {
281        DPRINTF(IPR, "TLB: Demapped page\n");
282        i->second->valid = false;
283        if (i->second->used) {
284            i->second->used = false;
285            usedEntries--;
286        }
287        freeList.push_front(i->second);
288        DPRINTF(TLB, "Freeing TLB entry : %#X\n", i->second);
289        lookupTable.erase(i);
290    }
291}
292
293void
294TLB::demapContext(int partition_id, int context_id)
295{
296    int x;
297    DPRINTF(IPR, "TLB: Demapping Context pid=%#d cid=%d\n",
298            partition_id, context_id);
299    cacheValid = false;
300    for (x = 0; x < size; x++) {
301        if (tlb[x].range.contextId == context_id &&
302            tlb[x].range.partitionId == partition_id) {
303            if (tlb[x].valid == true) {
304                freeList.push_front(&tlb[x]);
305                DPRINTF(TLB, "Freeing TLB entry : %#X\n", &tlb[x]);
306            }
307            tlb[x].valid = false;
308            if (tlb[x].used) {
309                tlb[x].used = false;
310                usedEntries--;
311            }
312            lookupTable.erase(tlb[x].range);
313        }
314    }
315}
316
317void
318TLB::demapAll(int partition_id)
319{
320    int x;
321    DPRINTF(TLB, "TLB: Demapping All pid=%#d\n", partition_id);
322    cacheValid = false;
323    for (x = 0; x < size; x++) {
324        if (!tlb[x].pte.locked() && tlb[x].range.partitionId == partition_id) {
325            if (tlb[x].valid == true){
326                freeList.push_front(&tlb[x]);
327                DPRINTF(TLB, "Freeing TLB entry : %#X\n", &tlb[x]);
328            }
329            tlb[x].valid = false;
330            if (tlb[x].used) {
331                tlb[x].used = false;
332                usedEntries--;
333            }
334            lookupTable.erase(tlb[x].range);
335        }
336    }
337}
338
339void
340TLB::invalidateAll()
341{
342    int x;
343    cacheValid = false;
344
345    freeList.clear();
346    lookupTable.clear();
347    for (x = 0; x < size; x++) {
348        if (tlb[x].valid == true)
349            freeList.push_back(&tlb[x]);
350        tlb[x].valid = false;
351        tlb[x].used = false;
352    }
353    usedEntries = 0;
354}
355
356uint64_t
357TLB::TteRead(int entry) {
358    if (entry >= size)
359        panic("entry: %d\n", entry);
360
361    assert(entry < size);
362    if (tlb[entry].valid)
363        return tlb[entry].pte();
364    else
365        return (uint64_t)-1ll;
366}
367
368uint64_t
369TLB::TagRead(int entry) {
370    assert(entry < size);
371    uint64_t tag;
372    if (!tlb[entry].valid)
373        return (uint64_t)-1ll;
374
375    tag = tlb[entry].range.contextId;
376    tag |= tlb[entry].range.va;
377    tag |= (uint64_t)tlb[entry].range.partitionId << 61;
378    tag |= tlb[entry].range.real ? ULL(1) << 60 : 0;
379    tag |= (uint64_t)~tlb[entry].pte._size() << 56;
380    return tag;
381}
382
383bool
384TLB::validVirtualAddress(Addr va, bool am)
385{
386    if (am)
387        return true;
388    if (va >= StartVAddrHole && va <= EndVAddrHole)
389        return false;
390    return true;
391}
392
393void
394TLB::writeSfsr(ThreadContext *tc, int reg,  bool write, ContextType ct,
395        bool se, FaultTypes ft, int asi)
396{
397    uint64_t sfsr;
398    sfsr = tc->readMiscReg(reg);
399
400    if (sfsr & 0x1)
401        sfsr = 0x3;
402    else
403        sfsr = 1;
404
405    if (write)
406        sfsr |= 1 << 2;
407    sfsr |= ct << 4;
408    if (se)
409        sfsr |= 1 << 6;
410    sfsr |= ft << 7;
411    sfsr |= asi << 16;
412    tc->setMiscRegWithEffect(reg, sfsr);
413}
414
415void
416TLB::writeTagAccess(ThreadContext *tc, int reg, Addr va, int context)
417{
418    DPRINTF(TLB, "TLB: Writing Tag Access: va: %#X ctx: %#X value: %#X\n",
419            va, context, mbits(va, 63,13) | mbits(context,12,0));
420
421    tc->setMiscRegWithEffect(reg, mbits(va, 63,13) | mbits(context,12,0));
422}
423
424void
425ITB::writeSfsr(ThreadContext *tc, bool write, ContextType ct,
426        bool se, FaultTypes ft, int asi)
427{
428    DPRINTF(TLB, "TLB: ITB Fault:  w=%d ct=%d ft=%d asi=%d\n",
429             (int)write, ct, ft, asi);
430    TLB::writeSfsr(tc, MISCREG_MMU_ITLB_SFSR, write, ct, se, ft, asi);
431}
432
433void
434ITB::writeTagAccess(ThreadContext *tc, Addr va, int context)
435{
436    TLB::writeTagAccess(tc, MISCREG_MMU_ITLB_TAG_ACCESS, va, context);
437}
438
439void
440DTB::writeSfr(ThreadContext *tc, Addr a, bool write, ContextType ct,
441        bool se, FaultTypes ft, int asi)
442{
443    DPRINTF(TLB, "TLB: DTB Fault: A=%#x w=%d ct=%d ft=%d asi=%d\n",
444            a, (int)write, ct, ft, asi);
445    TLB::writeSfsr(tc, MISCREG_MMU_DTLB_SFSR, write, ct, se, ft, asi);
446    tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_SFAR, a);
447}
448
449void
450DTB::writeTagAccess(ThreadContext *tc, Addr va, int context)
451{
452    TLB::writeTagAccess(tc, MISCREG_MMU_DTLB_TAG_ACCESS, va, context);
453}
454
455
456
457Fault
458ITB::translate(RequestPtr &req, ThreadContext *tc)
459{
460    uint64_t tlbdata = tc->readMiscReg(MISCREG_TLB_DATA);
461
462    Addr vaddr = req->getVaddr();
463    TlbEntry *e;
464
465    assert(req->getAsi() == ASI_IMPLICIT);
466
467    DPRINTF(TLB, "TLB: ITB Request to translate va=%#x size=%d\n",
468            vaddr, req->getSize());
469
470    // Be fast if we can!
471    if (cacheValid && cacheState == tlbdata) {
472        if (cacheEntry) {
473            if (cacheEntry->range.va < vaddr + sizeof(MachInst) &&
474                cacheEntry->range.va + cacheEntry->range.size >= vaddr) {
475                    req->setPaddr(cacheEntry->pte.paddr() & ~(cacheEntry->pte.size()-1) |
476                                  vaddr & cacheEntry->pte.size()-1 );
477                    return NoFault;
478            }
479        } else {
480            req->setPaddr(vaddr & PAddrImplMask);
481            return NoFault;
482        }
483    }
484
485    bool hpriv = bits(tlbdata,0,0);
486    bool red = bits(tlbdata,1,1);
487    bool priv = bits(tlbdata,2,2);
488    bool addr_mask = bits(tlbdata,3,3);
489    bool lsu_im = bits(tlbdata,4,4);
490
491    int part_id = bits(tlbdata,15,8);
492    int tl = bits(tlbdata,18,16);
493    int pri_context = bits(tlbdata,47,32);
494    int context;
495    ContextType ct;
496    int asi;
497    bool real = false;
498
499    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsuim:%d part_id: %#X\n",
500           priv, hpriv, red, lsu_im, part_id);
501
502    if (tl > 0) {
503        asi = ASI_N;
504        ct = Nucleus;
505        context = 0;
506    } else {
507        asi = ASI_P;
508        ct = Primary;
509        context = pri_context;
510    }
511
512    if ( hpriv || red ) {
513        cacheValid = true;
514        cacheState = tlbdata;
515        cacheEntry = NULL;
516        req->setPaddr(vaddr & PAddrImplMask);
517        return NoFault;
518    }
519
520    // If the access is unaligned trap
521    if (vaddr & 0x3) {
522        writeSfsr(tc, false, ct, false, OtherFault, asi);
523        return new MemAddressNotAligned;
524    }
525
526    if (addr_mask)
527        vaddr = vaddr & VAddrAMask;
528
529    if (!validVirtualAddress(vaddr, addr_mask)) {
530        writeSfsr(tc, false, ct, false, VaOutOfRange, asi);
531        return new InstructionAccessException;
532    }
533
534    if (!lsu_im) {
535        e = lookup(vaddr, part_id, true);
536        real = true;
537        context = 0;
538    } else {
539        e = lookup(vaddr, part_id, false, context);
540    }
541
542    if (e == NULL || !e->valid) {
543        writeTagAccess(tc, vaddr, context);
544        if (real)
545            return new InstructionRealTranslationMiss;
546        else
547            return new FastInstructionAccessMMUMiss;
548    }
549
550    // were not priviledged accesing priv page
551    if (!priv && e->pte.priv()) {
552        writeSfsr(tc, false, ct, false, PrivViolation, asi);
553        return new InstructionAccessException;
554    }
555
556    // cache translation date for next translation
557    cacheValid = true;
558    cacheState = tlbdata;
559    cacheEntry = e;
560
561    req->setPaddr(e->pte.paddr() & ~(e->pte.size()-1) |
562                  vaddr & e->pte.size()-1 );
563    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
564    return NoFault;
565}
566
567
568
569Fault
570DTB::translate(RequestPtr &req, ThreadContext *tc, bool write)
571{
572    /* @todo this could really use some profiling and fixing to make it faster! */
573    uint64_t tlbdata = tc->readMiscReg(MISCREG_TLB_DATA);
574    Addr vaddr = req->getVaddr();
575    Addr size = req->getSize();
576    ASI asi;
577    asi = (ASI)req->getAsi();
578    bool implicit = false;
579    bool hpriv = bits(tlbdata,0,0);
580
581    DPRINTF(TLB, "TLB: DTB Request to translate va=%#x size=%d asi=%#x\n",
582            vaddr, size, asi);
583
584    if (asi == ASI_IMPLICIT)
585        implicit = true;
586
587    if (hpriv && implicit) {
588        req->setPaddr(vaddr & PAddrImplMask);
589        return NoFault;
590    }
591
592    // Be fast if we can!
593    if (cacheValid &&  cacheState == tlbdata) {
594        if (cacheEntry[0] && cacheAsi[0] == asi && cacheEntry[0]->range.va < vaddr + size &&
595            cacheEntry[0]->range.va + cacheEntry[0]->range.size > vaddr) {
596                req->setPaddr(cacheEntry[0]->pte.paddr() & ~(cacheEntry[0]->pte.size()-1) |
597                              vaddr & cacheEntry[0]->pte.size()-1 );
598                return NoFault;
599        }
600        if (cacheEntry[1] && cacheAsi[1] == asi && cacheEntry[1]->range.va < vaddr + size &&
601            cacheEntry[1]->range.va + cacheEntry[1]->range.size > vaddr) {
602                req->setPaddr(cacheEntry[1]->pte.paddr() & ~(cacheEntry[1]->pte.size()-1) |
603                              vaddr & cacheEntry[1]->pte.size()-1 );
604                return NoFault;
605        }
606    }
607
608    bool red = bits(tlbdata,1,1);
609    bool priv = bits(tlbdata,2,2);
610    bool addr_mask = bits(tlbdata,3,3);
611    bool lsu_dm = bits(tlbdata,5,5);
612
613    int part_id = bits(tlbdata,15,8);
614    int tl = bits(tlbdata,18,16);
615    int pri_context = bits(tlbdata,47,32);
616    int sec_context = bits(tlbdata,63,48);
617
618    bool real = false;
619    ContextType ct = Primary;
620    int context = 0;
621
622    TlbEntry *e;
623
624    DPRINTF(TLB, "TLB: priv:%d hpriv:%d red:%d lsudm:%d part_id: %#X\n",
625           priv, hpriv, red, lsu_dm, part_id);
626
627    if (implicit) {
628        if (tl > 0) {
629            asi = ASI_N;
630            ct = Nucleus;
631            context = 0;
632        } else {
633            asi = ASI_P;
634            ct = Primary;
635            context = pri_context;
636        }
637    } else {
638        // We need to check for priv level/asi priv
639        if (!priv && !hpriv && !AsiIsUnPriv(asi)) {
640            // It appears that context should be Nucleus in these cases?
641            writeSfr(tc, vaddr, write, Nucleus, false, IllegalAsi, asi);
642            return new PrivilegedAction;
643        }
644
645        if (!hpriv && AsiIsHPriv(asi)) {
646            writeSfr(tc, vaddr, write, Nucleus, false, IllegalAsi, asi);
647            return new DataAccessException;
648        }
649
650        if (AsiIsPrimary(asi)) {
651            context = pri_context;
652            ct = Primary;
653        } else if (AsiIsSecondary(asi)) {
654            context = sec_context;
655            ct = Secondary;
656        } else if (AsiIsNucleus(asi)) {
657            ct = Nucleus;
658            context = 0;
659        } else {  // ????
660            ct = Primary;
661            context = pri_context;
662        }
663    }
664
665    if (!implicit) {
666        if (AsiIsLittle(asi))
667            panic("Little Endian ASIs not supported\n");
668        if (AsiIsBlock(asi))
669            panic("Block ASIs not supported\n");
670        if (AsiIsNoFault(asi))
671            panic("No Fault ASIs not supported\n");
672
673        // These twin ASIs are OK
674        if (asi == ASI_P || asi == ASI_LDTX_P)
675            goto continueDtbFlow;
676        if (!write && (asi == ASI_QUAD_LDD || asi == ASI_LDTX_REAL))
677            goto continueDtbFlow;
678
679        if (AsiIsTwin(asi))
680            panic("Twin ASIs not supported\n");
681        if (AsiIsPartialStore(asi))
682            panic("Partial Store ASIs not supported\n");
683        if (AsiIsInterrupt(asi))
684            panic("Interrupt ASIs not supported\n");
685
686        if (AsiIsMmu(asi))
687            goto handleMmuRegAccess;
688        if (AsiIsScratchPad(asi))
689            goto handleScratchRegAccess;
690        if (AsiIsQueue(asi))
691            goto handleQueueRegAccess;
692        if (AsiIsSparcError(asi))
693            goto handleSparcErrorRegAccess;
694
695        if (!AsiIsReal(asi) && !AsiIsNucleus(asi) && !AsiIsAsIfUser(asi))
696            panic("Accessing ASI %#X. Should we?\n", asi);
697    }
698
699continueDtbFlow:
700    // If the asi is unaligned trap
701    if (vaddr & size-1) {
702        writeSfr(tc, vaddr, false, ct, false, OtherFault, asi);
703        return new MemAddressNotAligned;
704    }
705
706    if (addr_mask)
707        vaddr = vaddr & VAddrAMask;
708
709    if (!validVirtualAddress(vaddr, addr_mask)) {
710        writeSfr(tc, vaddr, false, ct, true, VaOutOfRange, asi);
711        return new DataAccessException;
712    }
713
714
715    if ((!lsu_dm && !hpriv && !red) || AsiIsReal(asi)) {
716        real = true;
717        context = 0;
718    };
719
720    if (hpriv && (implicit || (!AsiIsAsIfUser(asi) && !AsiIsReal(asi)))) {
721        req->setPaddr(vaddr & PAddrImplMask);
722        return NoFault;
723    }
724
725    e = lookup(vaddr, part_id, real, context);
726
727    if (e == NULL || !e->valid) {
728        writeTagAccess(tc, vaddr, context);
729        DPRINTF(TLB, "TLB: DTB Failed to find matching TLB entry\n");
730        if (real)
731            return new DataRealTranslationMiss;
732        else
733            return new FastDataAccessMMUMiss;
734
735    }
736
737
738    if (write && !e->pte.writable()) {
739        writeSfr(tc, vaddr, write, ct, e->pte.sideffect(), OtherFault, asi);
740        return new FastDataAccessProtection;
741    }
742
743    if (e->pte.nofault() && !AsiIsNoFault(asi)) {
744        writeSfr(tc, vaddr, write, ct, e->pte.sideffect(), LoadFromNfo, asi);
745        return new DataAccessException;
746    }
747
748    if (e->pte.sideffect())
749        req->setFlags(req->getFlags() | UNCACHEABLE);
750
751
752    if (!priv && e->pte.priv()) {
753        writeSfr(tc, vaddr, write, ct, e->pte.sideffect(), PrivViolation, asi);
754        return new DataAccessException;
755    }
756
757    // cache translation date for next translation
758    cacheState = tlbdata;
759    if (!cacheValid) {
760        cacheEntry[1] = NULL;
761        cacheEntry[0] = NULL;
762    }
763
764    if (cacheEntry[0] != e && cacheEntry[1] != e) {
765        cacheEntry[1] = cacheEntry[0];
766        cacheEntry[0] = e;
767        cacheAsi[1] = cacheAsi[0];
768        cacheAsi[0] = asi;
769        if (implicit)
770            cacheAsi[0] = (ASI)0;
771    }
772    cacheValid = true;
773    req->setPaddr(e->pte.paddr() & ~(e->pte.size()-1) |
774                  vaddr & e->pte.size()-1);
775    DPRINTF(TLB, "TLB: %#X -> %#X\n", vaddr, req->getPaddr());
776    return NoFault;
777    /** Normal flow ends here. */
778
779handleScratchRegAccess:
780    if (vaddr > 0x38 || (vaddr >= 0x20 && vaddr < 0x30 && !hpriv)) {
781        writeSfr(tc, vaddr, write, Primary, true, IllegalAsi, asi);
782        return new DataAccessException;
783    }
784    goto regAccessOk;
785
786handleQueueRegAccess:
787    if (!priv  && !hpriv) {
788        writeSfr(tc, vaddr, write, Primary, true, IllegalAsi, asi);
789        return new PrivilegedAction;
790    }
791    if (!hpriv && vaddr & 0xF || vaddr > 0x3f8 || vaddr < 0x3c0) {
792        writeSfr(tc, vaddr, write, Primary, true, IllegalAsi, asi);
793        return new DataAccessException;
794    }
795    goto regAccessOk;
796
797handleSparcErrorRegAccess:
798    if (!hpriv) {
799        if (priv) {
800            writeSfr(tc, vaddr, write, Primary, true, IllegalAsi, asi);
801            return new DataAccessException;
802        } else {
803            writeSfr(tc, vaddr, write, Primary, true, IllegalAsi, asi);
804            return new PrivilegedAction;
805        }
806    }
807    goto regAccessOk;
808
809
810regAccessOk:
811handleMmuRegAccess:
812    DPRINTF(TLB, "TLB: DTB Translating MM IPR access\n");
813    req->setMmapedIpr(true);
814    req->setPaddr(req->getVaddr());
815    return NoFault;
816};
817
818Tick
819DTB::doMmuRegRead(ThreadContext *tc, Packet *pkt)
820{
821    Addr va = pkt->getAddr();
822    ASI asi = (ASI)pkt->req->getAsi();
823    uint64_t temp, data;
824    uint64_t tsbtemp, cnftemp;
825
826    DPRINTF(IPR, "Memory Mapped IPR Read: asi=%#X a=%#x\n",
827         (uint32_t)pkt->req->getAsi(), pkt->getAddr());
828
829    switch (asi) {
830      case ASI_LSU_CONTROL_REG:
831        assert(va == 0);
832        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_LSU_CTRL));
833        break;
834      case ASI_MMU:
835        switch (va) {
836          case 0x8:
837            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_P_CONTEXT));
838            break;
839          case 0x10:
840            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_S_CONTEXT));
841            break;
842          default:
843            goto doMmuReadError;
844        }
845        break;
846      case ASI_QUEUE:
847        pkt->set(tc->readMiscRegWithEffect(MISCREG_QUEUE_CPU_MONDO_HEAD +
848                    (va >> 4) - 0x3c));
849        break;
850      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
851        assert(va == 0);
852        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS0));
853        break;
854      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
855        assert(va == 0);
856        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS1));
857        break;
858      case ASI_DMMU_CTXT_ZERO_CONFIG:
859        assert(va == 0);
860        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_CONFIG));
861        break;
862      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
863        assert(va == 0);
864        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS0));
865        break;
866      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
867        assert(va == 0);
868        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS1));
869        break;
870      case ASI_IMMU_CTXT_ZERO_CONFIG:
871        assert(va == 0);
872        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_CONFIG));
873        break;
874      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
875        assert(va == 0);
876        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS0));
877        break;
878      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
879        assert(va == 0);
880        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS1));
881        break;
882      case ASI_DMMU_CTXT_NONZERO_CONFIG:
883        assert(va == 0);
884        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_CONFIG));
885        break;
886      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
887        assert(va == 0);
888        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS0));
889        break;
890      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
891        assert(va == 0);
892        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS1));
893        break;
894      case ASI_IMMU_CTXT_NONZERO_CONFIG:
895        assert(va == 0);
896        pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_CONFIG));
897        break;
898      case ASI_SPARC_ERROR_STATUS_REG:
899        warn("returning 0 for  SPARC ERROR regsiter read\n");
900        pkt->set((uint64_t)0);
901        break;
902      case ASI_HYP_SCRATCHPAD:
903      case ASI_SCRATCHPAD:
904        pkt->set(tc->readMiscRegWithEffect(MISCREG_SCRATCHPAD_R0 + (va >> 3)));
905        break;
906      case ASI_IMMU:
907        switch (va) {
908          case 0x0:
909            temp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS);
910            pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48);
911            break;
912          case 0x18:
913            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_SFSR));
914            break;
915          case 0x30:
916            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS));
917            break;
918          default:
919            goto doMmuReadError;
920        }
921        break;
922      case ASI_DMMU:
923        switch (va) {
924          case 0x0:
925            temp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS);
926            pkt->set(bits(temp,63,22) | bits(temp,12,0) << 48);
927            break;
928          case 0x18:
929            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_SFSR));
930            break;
931          case 0x20:
932            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_SFAR));
933            break;
934          case 0x30:
935            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS));
936            break;
937          case 0x80:
938            pkt->set(tc->readMiscRegWithEffect(MISCREG_MMU_PART_ID));
939            break;
940          default:
941                goto doMmuReadError;
942        }
943        break;
944      case ASI_DMMU_TSB_PS0_PTR_REG:
945        temp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS);
946        if (bits(temp,12,0) == 0) {
947            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS0);
948            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_CONFIG);
949        } else {
950            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS0);
951            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_CONFIG);
952        }
953        data = mbits(tsbtemp,63,13);
954        data |= temp >> (9 + bits(cnftemp,2,0) * 3) &
955            mbits((uint64_t)-1ll,12+bits(tsbtemp,3,0), 4);
956        pkt->set(data);
957        break;
958      case ASI_DMMU_TSB_PS1_PTR_REG:
959        temp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS);
960        if (bits(temp,12,0) == 0) {
961            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS1);
962            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_C0_CONFIG);
963        } else {
964            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS1);
965            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_CX_CONFIG);
966        }
967        data = mbits(tsbtemp,63,13);
968        if (bits(tsbtemp,12,12))
969            data |= ULL(1) << (13+bits(tsbtemp,3,0));
970        data |= temp >> (9 + bits(cnftemp,10,8) * 3) &
971            mbits((uint64_t)-1ll,12+bits(tsbtemp,3,0), 4);
972        pkt->set(data);
973        break;
974      case ASI_IMMU_TSB_PS0_PTR_REG:
975        temp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS);
976        if (bits(temp,12,0) == 0) {
977            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS0);
978            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_CONFIG);
979        } else {
980            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS0);
981            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_CONFIG);
982        }
983        data = mbits(tsbtemp,63,13);
984        data |= temp >> (9 + bits(cnftemp,2,0) * 3) &
985            mbits((uint64_t)-1ll,12+bits(tsbtemp,3,0), 4);
986        pkt->set(data);
987        break;
988      case ASI_IMMU_TSB_PS1_PTR_REG:
989        temp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS);
990        if (bits(temp,12,0) == 0) {
991            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS1);
992            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_C0_CONFIG);
993        } else {
994            tsbtemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS1);
995            cnftemp = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_CX_CONFIG);
996        }
997        data = mbits(tsbtemp,63,13);
998        if (bits(tsbtemp,12,12))
999            data |= ULL(1) << (13+bits(tsbtemp,3,0));
1000        data |= temp >> (9 + bits(cnftemp,10,8) * 3) &
1001            mbits((uint64_t)-1ll,12+bits(tsbtemp,3,0), 4);
1002        pkt->set(data);
1003        break;
1004
1005      default:
1006doMmuReadError:
1007        panic("need to impl DTB::doMmuRegRead() got asi=%#x, va=%#x\n",
1008            (uint32_t)asi, va);
1009    }
1010    pkt->result = Packet::Success;
1011    return tc->getCpuPtr()->cycles(1);
1012}
1013
1014Tick
1015DTB::doMmuRegWrite(ThreadContext *tc, Packet *pkt)
1016{
1017    uint64_t data = gtoh(pkt->get<uint64_t>());
1018    Addr va = pkt->getAddr();
1019    ASI asi = (ASI)pkt->req->getAsi();
1020
1021    Addr ta_insert;
1022    Addr va_insert;
1023    Addr ct_insert;
1024    int part_insert;
1025    int entry_insert = -1;
1026    bool real_insert;
1027    bool ignore;
1028    int part_id;
1029    int ctx_id;
1030    PageTableEntry pte;
1031
1032    DPRINTF(IPR, "Memory Mapped IPR Write: asi=%#X a=%#x d=%#X\n",
1033         (uint32_t)asi, va, data);
1034
1035    switch (asi) {
1036      case ASI_LSU_CONTROL_REG:
1037        assert(va == 0);
1038        tc->setMiscRegWithEffect(MISCREG_MMU_LSU_CTRL, data);
1039        break;
1040      case ASI_MMU:
1041        switch (va) {
1042          case 0x8:
1043            tc->setMiscRegWithEffect(MISCREG_MMU_P_CONTEXT, data);
1044            break;
1045          case 0x10:
1046            tc->setMiscRegWithEffect(MISCREG_MMU_S_CONTEXT, data);
1047            break;
1048          default:
1049            goto doMmuWriteError;
1050        }
1051        break;
1052      case ASI_QUEUE:
1053        assert(mbits(data,13,6) == data);
1054        tc->setMiscRegWithEffect(MISCREG_QUEUE_CPU_MONDO_HEAD +
1055                    (va >> 4) - 0x3c, data);
1056        break;
1057      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0:
1058        assert(va == 0);
1059        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS0, data);
1060        break;
1061      case ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1:
1062        assert(va == 0);
1063        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_C0_TSB_PS1, data);
1064        break;
1065      case ASI_DMMU_CTXT_ZERO_CONFIG:
1066        assert(va == 0);
1067        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_C0_CONFIG, data);
1068        break;
1069      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0:
1070        assert(va == 0);
1071        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS0, data);
1072        break;
1073      case ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1:
1074        assert(va == 0);
1075        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_C0_TSB_PS1, data);
1076        break;
1077      case ASI_IMMU_CTXT_ZERO_CONFIG:
1078        assert(va == 0);
1079        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_C0_CONFIG, data);
1080        break;
1081      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0:
1082        assert(va == 0);
1083        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS0, data);
1084        break;
1085      case ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1:
1086        assert(va == 0);
1087        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_CX_TSB_PS1, data);
1088        break;
1089      case ASI_DMMU_CTXT_NONZERO_CONFIG:
1090        assert(va == 0);
1091        tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_CX_CONFIG, data);
1092        break;
1093      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0:
1094        assert(va == 0);
1095        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS0, data);
1096        break;
1097      case ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1:
1098        assert(va == 0);
1099        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_CX_TSB_PS1, data);
1100        break;
1101      case ASI_IMMU_CTXT_NONZERO_CONFIG:
1102        assert(va == 0);
1103        tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_CX_CONFIG, data);
1104        break;
1105      case ASI_SPARC_ERROR_EN_REG:
1106      case ASI_SPARC_ERROR_STATUS_REG:
1107        warn("Ignoring write to SPARC ERROR regsiter\n");
1108        break;
1109      case ASI_HYP_SCRATCHPAD:
1110      case ASI_SCRATCHPAD:
1111        tc->setMiscRegWithEffect(MISCREG_SCRATCHPAD_R0 + (va >> 3), data);
1112        break;
1113      case ASI_IMMU:
1114        switch (va) {
1115          case 0x18:
1116            tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_SFSR, data);
1117            break;
1118          case 0x30:
1119            sext<59>(bits(data, 59,0));
1120            tc->setMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS, data);
1121            break;
1122          default:
1123            goto doMmuWriteError;
1124        }
1125        break;
1126      case ASI_ITLB_DATA_ACCESS_REG:
1127        entry_insert = bits(va, 8,3);
1128      case ASI_ITLB_DATA_IN_REG:
1129        assert(entry_insert != -1 || mbits(va,10,9) == va);
1130        ta_insert = tc->readMiscRegWithEffect(MISCREG_MMU_ITLB_TAG_ACCESS);
1131        va_insert = mbits(ta_insert, 63,13);
1132        ct_insert = mbits(ta_insert, 12,0);
1133        part_insert = tc->readMiscRegWithEffect(MISCREG_MMU_PART_ID);
1134        real_insert = bits(va, 9,9);
1135        pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v :
1136                PageTableEntry::sun4u);
1137        tc->getITBPtr()->insert(va_insert, part_insert, ct_insert, real_insert,
1138                pte, entry_insert);
1139        break;
1140      case ASI_DTLB_DATA_ACCESS_REG:
1141        entry_insert = bits(va, 8,3);
1142      case ASI_DTLB_DATA_IN_REG:
1143        assert(entry_insert != -1 || mbits(va,10,9) == va);
1144        ta_insert = tc->readMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS);
1145        va_insert = mbits(ta_insert, 63,13);
1146        ct_insert = mbits(ta_insert, 12,0);
1147        part_insert = tc->readMiscRegWithEffect(MISCREG_MMU_PART_ID);
1148        real_insert = bits(va, 9,9);
1149        pte.populate(data, bits(va,10,10) ? PageTableEntry::sun4v :
1150                PageTableEntry::sun4u);
1151        insert(va_insert, part_insert, ct_insert, real_insert, pte, entry_insert);
1152        break;
1153      case ASI_IMMU_DEMAP:
1154        ignore = false;
1155        ctx_id = -1;
1156        part_id =  tc->readMiscRegWithEffect(MISCREG_MMU_PART_ID);
1157        switch (bits(va,5,4)) {
1158          case 0:
1159            ctx_id = tc->readMiscRegWithEffect(MISCREG_MMU_P_CONTEXT);
1160            break;
1161          case 1:
1162            ignore = true;
1163            break;
1164          case 3:
1165            ctx_id = 0;
1166            break;
1167          default:
1168            ignore = true;
1169        }
1170
1171        switch(bits(va,7,6)) {
1172          case 0: // demap page
1173            if (!ignore)
1174                tc->getITBPtr()->demapPage(mbits(va,63,13), part_id,
1175                        bits(va,9,9), ctx_id);
1176            break;
1177          case 1: //demap context
1178            if (!ignore)
1179                tc->getITBPtr()->demapContext(part_id, ctx_id);
1180            break;
1181          case 2:
1182            tc->getITBPtr()->demapAll(part_id);
1183            break;
1184          default:
1185            panic("Invalid type for IMMU demap\n");
1186        }
1187        break;
1188      case ASI_DMMU:
1189        switch (va) {
1190          case 0x18:
1191            tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_SFSR, data);
1192            break;
1193          case 0x30:
1194            sext<59>(bits(data, 59,0));
1195            tc->setMiscRegWithEffect(MISCREG_MMU_DTLB_TAG_ACCESS, data);
1196            break;
1197          case 0x80:
1198            tc->setMiscRegWithEffect(MISCREG_MMU_PART_ID, data);
1199            break;
1200          default:
1201            goto doMmuWriteError;
1202        }
1203        break;
1204      case ASI_DMMU_DEMAP:
1205        ignore = false;
1206        ctx_id = -1;
1207        part_id =  tc->readMiscRegWithEffect(MISCREG_MMU_PART_ID);
1208        switch (bits(va,5,4)) {
1209          case 0:
1210            ctx_id = tc->readMiscRegWithEffect(MISCREG_MMU_P_CONTEXT);
1211            break;
1212          case 1:
1213            ctx_id = tc->readMiscRegWithEffect(MISCREG_MMU_S_CONTEXT);
1214            break;
1215          case 3:
1216            ctx_id = 0;
1217            break;
1218          default:
1219            ignore = true;
1220        }
1221
1222        switch(bits(va,7,6)) {
1223          case 0: // demap page
1224            if (!ignore)
1225                demapPage(mbits(va,63,13), part_id, bits(va,9,9), ctx_id);
1226            break;
1227          case 1: //demap context
1228            if (!ignore)
1229                demapContext(part_id, ctx_id);
1230            break;
1231          case 2:
1232            demapAll(part_id);
1233            break;
1234          default:
1235            panic("Invalid type for IMMU demap\n");
1236        }
1237        break;
1238      default:
1239doMmuWriteError:
1240        panic("need to impl DTB::doMmuRegWrite() got asi=%#x, va=%#x d=%#x\n",
1241            (uint32_t)pkt->req->getAsi(), pkt->getAddr(), data);
1242    }
1243    pkt->result = Packet::Success;
1244    return tc->getCpuPtr()->cycles(1);
1245}
1246
1247void
1248TLB::serialize(std::ostream &os)
1249{
1250    panic("Need to implement serialize tlb for SPARC\n");
1251}
1252
1253void
1254TLB::unserialize(Checkpoint *cp, const std::string &section)
1255{
1256    panic("Need to implement unserialize tlb for SPARC\n");
1257}
1258
1259
1260DEFINE_SIM_OBJECT_CLASS_NAME("SparcTLB", TLB)
1261
1262BEGIN_DECLARE_SIM_OBJECT_PARAMS(ITB)
1263
1264    Param<int> size;
1265
1266END_DECLARE_SIM_OBJECT_PARAMS(ITB)
1267
1268BEGIN_INIT_SIM_OBJECT_PARAMS(ITB)
1269
1270    INIT_PARAM_DFLT(size, "TLB size", 48)
1271
1272END_INIT_SIM_OBJECT_PARAMS(ITB)
1273
1274
1275CREATE_SIM_OBJECT(ITB)
1276{
1277    return new ITB(getInstanceName(), size);
1278}
1279
1280REGISTER_SIM_OBJECT("SparcITB", ITB)
1281
1282BEGIN_DECLARE_SIM_OBJECT_PARAMS(DTB)
1283
1284    Param<int> size;
1285
1286END_DECLARE_SIM_OBJECT_PARAMS(DTB)
1287
1288BEGIN_INIT_SIM_OBJECT_PARAMS(DTB)
1289
1290    INIT_PARAM_DFLT(size, "TLB size", 64)
1291
1292END_INIT_SIM_OBJECT_PARAMS(DTB)
1293
1294
1295CREATE_SIM_OBJECT(DTB)
1296{
1297    return new DTB(getInstanceName(), size);
1298}
1299
1300REGISTER_SIM_OBJECT("SparcDTB", DTB)
1301}
1302