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author | Ali Saidi <saidi@eecs.umich.edu> | 2007-08-13 23:44:26 -0400 |
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committer | Ali Saidi <saidi@eecs.umich.edu> | 2007-08-13 23:44:26 -0400 |
commit | 27ddf0b40e9b0bea1d75d825c7339c9fb9411bc9 (patch) | |
tree | c6dea0a58fec9d5efecfb5559e3e1eaa24b33878 /src/cpu/simple/atomic.cc | |
parent | b069b81acf498a538b1ce4b30ff8b2d96b2ec8de (diff) | |
parent | 9b4be6532741a511ca8f9e1d051269245814be8b (diff) | |
download | gem5-27ddf0b40e9b0bea1d75d825c7339c9fb9411bc9.tar.xz |
Merge IGNORE_STYLE change and my change.
--HG--
extra : convert_revision : 13880ec6df17b0317d4097243bb24add753a098a
Diffstat (limited to 'src/cpu/simple/atomic.cc')
-rw-r--r-- | src/cpu/simple/atomic.cc | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc index 704b65f36..e2a7d5938 100644 --- a/src/cpu/simple/atomic.cc +++ b/src/cpu/simple/atomic.cc @@ -67,6 +67,10 @@ AtomicSimpleCPU::getPort(const std::string &if_name, int idx) return &dcachePort; else if (if_name == "icache_port") return &icachePort; + else if (if_name == "physmem_port") { + hasPhysMemPort = true; + return &physmemPort; + } else panic("No Such Port\n"); } @@ -83,6 +87,12 @@ AtomicSimpleCPU::init() TheISA::initCPU(tc, tc->readCpuId()); } #endif + if (hasPhysMemPort) { + bool snoop = false; + AddrRangeList pmAddrList; + physmemPort.getPeerAddressRanges(pmAddrList, snoop); + physMemAddr = *pmAddrList.begin(); + } } bool @@ -141,7 +151,8 @@ AtomicSimpleCPU::DcachePort::setPeer(Port *port) AtomicSimpleCPU::AtomicSimpleCPU(Params *p) : BaseSimpleCPU(p), tickEvent(this), width(p->width), simulate_stalls(p->simulate_stalls), - icachePort(name() + "-iport", this), dcachePort(name() + "-iport", this) + icachePort(name() + "-iport", this), dcachePort(name() + "-iport", this), + physmemPort(name() + "-iport", this), hasPhysMemPort(false) { _status = Idle; @@ -293,8 +304,12 @@ AtomicSimpleCPU::read(Addr addr, T &data, unsigned flags) if (req->isMmapedIpr()) dcache_latency = TheISA::handleIprRead(thread->getTC(), &pkt); - else - dcache_latency = dcachePort.sendAtomic(&pkt); + else { + if (hasPhysMemPort && pkt.getAddr() == physMemAddr) + dcache_latency = physmemPort.sendAtomic(&pkt); + else + dcache_latency = dcachePort.sendAtomic(&pkt); + } dcache_access = true; assert(!pkt.isError()); @@ -402,7 +417,10 @@ AtomicSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res) dcache_latency = TheISA::handleIprWrite(thread->getTC(), &pkt); } else { data = htog(data); - dcache_latency = dcachePort.sendAtomic(&pkt); + if (hasPhysMemPort && pkt.getAddr() == physMemAddr) + dcache_latency = physmemPort.sendAtomic(&pkt); + else + dcache_latency = dcachePort.sendAtomic(&pkt); } dcache_access = true; assert(!pkt.isError()); @@ -513,7 +531,12 @@ AtomicSimpleCPU::tick() Packet::Broadcast); ifetch_pkt.dataStatic(&inst); - icache_latency = icachePort.sendAtomic(&ifetch_pkt); + if (hasPhysMemPort && ifetch_pkt.getAddr() == physMemAddr) + icache_latency = physmemPort.sendAtomic(&ifetch_pkt); + else + icache_latency = icachePort.sendAtomic(&ifetch_pkt); + + // ifetch_req is initialized to read the instruction directly // into the CPU object's inst field. //} |