diff options
author | Ali Saidi <saidi@eecs.umich.edu> | 2006-07-20 19:03:47 -0400 |
---|---|---|
committer | Ali Saidi <saidi@eecs.umich.edu> | 2006-07-20 19:03:47 -0400 |
commit | 851f91f2457aabbce2527231b725abf306aa35ff (patch) | |
tree | 8a466d1066a9e80b23115944289eb2eea452ef30 /src/mem/physical.cc | |
parent | a50c5cc999dbd875b57ac89ff9f15be8cb59809b (diff) | |
download | gem5-851f91f2457aabbce2527231b725abf306aa35ff.tar.xz |
Move PioPort timing code into Simple Timing Port object
Make PioPort use it
Make Physical memory use it as well
src/SConscript:
Add timing port to sconscript
src/dev/io_device.cc:
src/dev/io_device.hh:
Move simple timing pio port stuff into a simple timing port class so it can be used by the physical memory
src/mem/physical.cc:
src/mem/physical.hh:
use a simple timing port stuff instead of rolling our own here
--HG--
extra : convert_revision : e5befbd295a572568cfdca533efb5ed1984c59d1
Diffstat (limited to 'src/mem/physical.cc')
-rw-r--r-- | src/mem/physical.cc | 63 |
1 files changed, 22 insertions, 41 deletions
diff --git a/src/mem/physical.cc b/src/mem/physical.cc index 2d66602ab..291c70d8c 100644 --- a/src/mem/physical.cc +++ b/src/mem/physical.cc @@ -26,6 +26,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Authors: Ron Dreslinski + * Ali Saidi */ #include <sys/types.h> @@ -52,24 +53,6 @@ using namespace std; using namespace TheISA; -PhysicalMemory::MemResponseEvent::MemResponseEvent(Packet *pkt, MemoryPort* _m) - : Event(&mainEventQueue, CPU_Tick_Pri), pkt(pkt), memoryPort(_m) -{ - - this->setFlags(AutoDelete); -} - -void -PhysicalMemory::MemResponseEvent::process() -{ - memoryPort->sendTiming(pkt); -} - -const char * -PhysicalMemory::MemResponseEvent::description() -{ - return "Physical Memory Timing Access respnse event"; -} PhysicalMemory::PhysicalMemory(const string &n, Tick latency) : MemObject(n),base_addr(0), pmem_addr(NULL), port(NULL), lat(latency) @@ -124,27 +107,8 @@ PhysicalMemory::deviceBlockSize() return 0; } -bool -PhysicalMemory::doTimingAccess (Packet *pkt, MemoryPort* memoryPort) -{ - doFunctionalAccess(pkt); - - // turn packet around to go back to requester - pkt->makeTimingResponse(); - MemResponseEvent* response = new MemResponseEvent(pkt, memoryPort); - response->schedule(curTick + lat); - - return true; -} Tick -PhysicalMemory::doAtomicAccess(Packet *pkt) -{ - doFunctionalAccess(pkt); - return lat; -} - -void PhysicalMemory::doFunctionalAccess(Packet *pkt) { assert(pkt->getAddr() + pkt->getSize() < pmem_size); @@ -170,6 +134,7 @@ PhysicalMemory::doFunctionalAccess(Packet *pkt) } pkt->result = Packet::Success; + return lat; } Port * @@ -195,7 +160,7 @@ PhysicalMemory::recvStatusChange(Port::Status status) PhysicalMemory::MemoryPort::MemoryPort(const std::string &_name, PhysicalMemory *_memory) - : Port(_name), memory(_memory) + : SimpleTimingPort(_name), memory(_memory) { } void @@ -228,13 +193,20 @@ PhysicalMemory::MemoryPort::deviceBlockSize() bool PhysicalMemory::MemoryPort::recvTiming(Packet *pkt) { - return memory->doTimingAccess(pkt, this); + assert(pkt->result != Packet::Nacked); + + Tick latency = memory->doFunctionalAccess(pkt); + + pkt->makeTimingResponse(); + sendTiming(pkt, latency); + + return true; } Tick PhysicalMemory::MemoryPort::recvAtomic(Packet *pkt) { - return memory->doAtomicAccess(pkt); + return memory->doFunctionalAccess(pkt); } void @@ -243,7 +215,16 @@ PhysicalMemory::MemoryPort::recvFunctional(Packet *pkt) memory->doFunctionalAccess(pkt); } - +unsigned int +PhysicalMemory::drain(Event *de) +{ + int count = port->drain(de); + if (count) + changeState(Draining); + else + changeState(Drained); + return count; +} void PhysicalMemory::serialize(ostream &os) |