diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/arm/tlb.cc | 117 | ||||
| -rw-r--r-- | src/arch/arm/tlb.hh | 28 |
2 files changed, 125 insertions, 20 deletions
diff --git a/src/arch/arm/tlb.cc b/src/arch/arm/tlb.cc index 4f1279404..53509372a 100644 --- a/src/arch/arm/tlb.cc +++ b/src/arch/arm/tlb.cc @@ -152,6 +152,8 @@ TLB::insert(Addr addr, TlbEntry &entry) for(int i = size-1; i > 0; i--) table[i] = table[i-1]; table[0] = entry; + + inserts++; } void @@ -178,13 +180,17 @@ TLB::flushAll() TlbEntry *te; while (x < size) { te = &table[x]; - if (te->valid) + if (te->valid) { DPRINTF(TLB, " - %#x, asn %d ppn %#x size: %#x ap:%d\n", te->vpn << te->N, te->asid, te->pfn << te->N, te->size, te->ap); + flushedEntries++; + } x++; } memset(table, 0, sizeof(TlbEntry[size])); + + flushTlb++; } @@ -199,8 +205,10 @@ TLB::flushMvaAsid(Addr mva, uint64_t asn) DPRINTF(TLB, " - %#x, asn %d ppn %#x size: %#x ap:%d\n", te->vpn << te->N, te->asid, te->pfn << te->N, te->size, te->ap); te->valid = false; + flushedEntries++; te = lookup(mva,asn); } + flushTlbMvaAsid++; } void @@ -217,9 +225,11 @@ TLB::flushAsid(uint64_t asn) te->valid = false; DPRINTF(TLB, " - %#x, asn %d ppn %#x size: %#x ap:%d\n", te->vpn << te->N, te->asid, te->pfn << te->N, te->size, te->ap); + flushedEntries++; } x++; } + flushTlbAsid++; } void @@ -237,9 +247,11 @@ TLB::flushMva(Addr mva) te->valid = false; DPRINTF(TLB, " - %#x, asn %d ppn %#x size: %#x ap:%d\n", te->vpn << te->N, te->asid, te->pfn << te->N, te->size, te->ap); + flushedEntries++; } x++; } + flushTlbMva++; } void @@ -268,34 +280,47 @@ TLB::unserialize(Checkpoint *cp, const string §ion) void TLB::regStats() { - read_hits + instHits + .name(name() + ".inst_hits") + .desc("ITB inst hits") + ; + + instMisses + .name(name() + ".inst_misses") + .desc("ITB inst misses") + ; + + instAccesses + .name(name() + ".inst_accesses") + .desc("ITB inst accesses") + ; + + readHits .name(name() + ".read_hits") .desc("DTB read hits") ; - read_misses + readMisses .name(name() + ".read_misses") .desc("DTB read misses") ; - - read_accesses + readAccesses .name(name() + ".read_accesses") .desc("DTB read accesses") ; - write_hits + writeHits .name(name() + ".write_hits") .desc("DTB write hits") ; - write_misses + writeMisses .name(name() + ".write_misses") .desc("DTB write misses") ; - - write_accesses + writeAccesses .name(name() + ".write_accesses") .desc("DTB write accesses") ; @@ -315,9 +340,57 @@ TLB::regStats() .desc("DTB accesses") ; - hits = read_hits + write_hits; - misses = read_misses + write_misses; - accesses = read_accesses + write_accesses; + flushTlb + .name(name() + ".flush_tlb") + .desc("Number of times complete TLB was flushed") + ; + + flushTlbMva + .name(name() + ".flush_tlb_mva") + .desc("Number of times TLB was flushed by MVA") + ; + + flushTlbMvaAsid + .name(name() + ".flush_tlb_mva_asid") + .desc("Number of times TLB was flushed by MVA & ASID") + ; + + flushTlbAsid + .name(name() + ".flush_tlb_asid") + .desc("Number of times TLB was flushed by ASID") + ; + + flushedEntries + .name(name() + ".flush_entries") + .desc("Number of entries that have been flushed from TLB") + ; + + alignFaults + .name(name() + ".align_faults") + .desc("Number of TLB faults due to alignment restrictions") + ; + + prefetchFaults + .name(name() + ".prefetch_faults") + .desc("Number of TLB faults due to prefetch") + ; + + domainFaults + .name(name() + ".domain_faults") + .desc("Number of TLB faults due to domain restrictions") + ; + + permsFaults + .name(name() + ".perms_faults") + .desc("Number of TLB faults due to permissions restrictions") + ; + + instAccesses = instHits + instMisses; + readAccesses = readHits + readMisses; + writeAccesses = writeHits + writeMisses; + hits = readHits + writeHits + instHits; + misses = readMisses + writeMisses + instMisses; + accesses = readAccesses + writeAccesses + instAccesses; } #if !FULL_SYSTEM @@ -400,6 +473,7 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode, assert(flags & MustBeOne); if (sctlr.a || !(flags & AllowUnaligned)) { if (vaddr & flags & AlignmentMask) { + alignFaults++; return new DataAbort(vaddr, 0, is_write, ArmFault::AlignmentFault); } } @@ -441,8 +515,17 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode, if (req->isPrefetch()){ //if the request is a prefetch don't attempt to fill the TLB //or go any further with the memory access + prefetchFaults++; return new PrefetchAbort(vaddr, ArmFault::PrefetchTLBMiss); } + + if (is_fetch) + instMisses++; + else if (is_write) + writeMisses++; + else + readMisses++; + // start translation table walk, pass variables rather than // re-retreaving in table walker for speed DPRINTF(TLB, "TLB Miss: Starting hardware table walker for %#x(%d)\n", @@ -461,6 +544,13 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode, if (!te) printTlb(); assert(te); + } else { + if (is_fetch) + instHits++; + else if (is_write) + writeHits++; + else + readHits++; } // Set memory attributes @@ -474,6 +564,7 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode, uint32_t dacr = tc->readMiscReg(MISCREG_DACR); switch ( (dacr >> (te->domain * 2)) & 0x3) { case 0: + domainFaults++; DPRINTF(TLB, "TLB Fault: Data abort on domain. DACR: %#x domain: %#x" " write:%d sNp:%d\n", dacr, te->domain, is_write, te->sNp); if (is_fetch) @@ -548,12 +639,14 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode, panic("Unknown permissions\n"); } if ((is_fetch) && (abt || te->xn)) { + permsFaults++; DPRINTF(TLB, "TLB Fault: Prefetch abort on permission check. AP:%d priv:%d" " write:%d sNp:%d\n", ap, is_priv, is_write, te->sNp); return new PrefetchAbort(vaddr, (te->sNp ? ArmFault::Permission0 : ArmFault::Permission1)); } else if (abt) { + permsFaults++; DPRINTF(TLB, "TLB Fault: Data abort on permission check. AP:%d priv:%d" " write:%d sNp:%d\n", ap, is_priv, is_write, te->sNp); return new DataAbort(vaddr, te->domain, is_write, diff --git a/src/arch/arm/tlb.hh b/src/arch/arm/tlb.hh index bd723e8d1..a6803c415 100644 --- a/src/arch/arm/tlb.hh +++ b/src/arch/arm/tlb.hh @@ -102,14 +102,26 @@ class TLB : public BaseTLB TlbEntry *lookup(Addr vpn, uint8_t asn, bool functional = false); // Access Stats - mutable Stats::Scalar read_hits; - mutable Stats::Scalar read_misses; - mutable Stats::Scalar read_acv; - mutable Stats::Scalar read_accesses; - mutable Stats::Scalar write_hits; - mutable Stats::Scalar write_misses; - mutable Stats::Scalar write_acv; - mutable Stats::Scalar write_accesses; + mutable Stats::Scalar instHits; + mutable Stats::Scalar instMisses; + mutable Stats::Scalar readHits; + mutable Stats::Scalar readMisses; + mutable Stats::Scalar writeHits; + mutable Stats::Scalar writeMisses; + mutable Stats::Scalar inserts; + mutable Stats::Scalar flushTlb; + mutable Stats::Scalar flushTlbMva; + mutable Stats::Scalar flushTlbMvaAsid; + mutable Stats::Scalar flushTlbAsid; + mutable Stats::Scalar flushedEntries; + mutable Stats::Scalar alignFaults; + mutable Stats::Scalar prefetchFaults; + mutable Stats::Scalar domainFaults; + mutable Stats::Scalar permsFaults; + + Stats::Formula readAccesses; + Stats::Formula writeAccesses; + Stats::Formula instAccesses; Stats::Formula hits; Stats::Formula misses; Stats::Formula accesses; |