diff options
Diffstat (limited to 'src/arch/arm')
| -rw-r--r-- | src/arch/arm/table_walker.cc | 2 | ||||
| -rw-r--r-- | src/arch/arm/table_walker.hh | 39 |
2 files changed, 37 insertions, 4 deletions
diff --git a/src/arch/arm/table_walker.cc b/src/arch/arm/table_walker.cc index 591c16747..dfb406543 100644 --- a/src/arch/arm/table_walker.cc +++ b/src/arch/arm/table_walker.cc @@ -51,7 +51,7 @@ using namespace ArmISA; TableWalker::TableWalker(const Params *p) : MemObject(p), port(this, params()->sys, params()->min_backoff, - params()->max_backoff, true), + params()->max_backoff), tlb(NULL), currState(NULL), pending(false), masterId(p->sys->getMasterId(name())), doL1DescEvent(this), doL2DescEvent(this), doProcessEvent(this) diff --git a/src/arch/arm/table_walker.hh b/src/arch/arm/table_walker.hh index a6ff2585b..36adc8a82 100644 --- a/src/arch/arm/table_walker.hh +++ b/src/arch/arm/table_walker.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010 ARM Limited + * Copyright (c) 2010-2012 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -51,7 +51,6 @@ #include "sim/eventq.hh" #include "sim/fault_fwd.hh" -class DmaPort; class ThreadContext; namespace ArmISA { @@ -260,6 +259,40 @@ class TableWalker : public MemObject }; + protected: + + /** + * A snooping DMA port that currently does nothing besides + * extending the DMA port to accept snoops without complaining. + */ + class SnoopingDmaPort : public DmaPort + { + + protected: + + virtual void recvTimingSnoopReq(PacketPtr pkt) + { } + + virtual Tick recvAtomicSnoop(PacketPtr pkt) + { return 0; } + + virtual void recvFunctionalSnoop(PacketPtr pkt) + { } + + virtual bool isSnooping() const { return true; } + + public: + + /** + * A snooping DMA port merely calls the construtor of the DMA + * port. + */ + SnoopingDmaPort(MemObject *dev, System *s, Tick min_backoff, + Tick max_backoff) : + DmaPort(dev, s, min_backoff, max_backoff) + { } + }; + struct WalkerState //: public SimObject { /** Thread context that we're doing the walk for */ @@ -329,7 +362,7 @@ class TableWalker : public MemObject /** Port to issue translation requests from */ - DmaPort port; + SnoopingDmaPort port; /** TLB that is initiating these table walks */ TLB *tlb; |