diff options
Diffstat (limited to 'src/dev/io_device.hh')
-rw-r--r-- | src/dev/io_device.hh | 59 |
1 files changed, 4 insertions, 55 deletions
diff --git a/src/dev/io_device.hh b/src/dev/io_device.hh index fa3f98247..22a32e73a 100644 --- a/src/dev/io_device.hh +++ b/src/dev/io_device.hh @@ -37,6 +37,7 @@ #include "mem/packet_impl.hh" #include "sim/eventq.hh" #include "sim/sim_object.hh" +#include "mem/tport.hh" class Platform; class PioDevice; @@ -48,13 +49,9 @@ class System; * sensitive to an address range use. The port takes all the memory * access types and roles them into one read() and write() call that the device * must respond to. The device must also provide the addressRanges() function - * with which it returns the address ranges it is interested in. An extra - * sendTiming() function is implemented which takes an delay. In this way the - * device can immediatly call sendTiming(pkt, time) after processing a request - * and the request will be handled by the port even if the port bus the device - * connects to is blocked. - */ -class PioPort : public Port + * with which it returns the address ranges it is interested in. */ + +class PioPort : public SimpleTimingPort { protected: /** The device that this port serves. */ @@ -64,10 +61,6 @@ class PioPort : public Port * we are currently operating in. */ System *sys; - /** A list of outgoing timing response packets that haven't been serviced - * yet. */ - std::list<Packet*> transmitList; - /** The current status of the peer(bus) that we are connected to. */ Status peerStatus; @@ -82,53 +75,9 @@ class PioPort : public Port virtual void getDeviceAddressRanges(AddrRangeList &resp, AddrRangeList &snoop); - void resendNacked(Packet *pkt); - - /** - * This class is used to implemented sendTiming() with a delay. When a delay - * is requested a new event is created. When the event time expires it - * attempts to send the packet. If it cannot, the packet is pushed onto the - * transmit list to be sent when recvRetry() is called. */ - class SendEvent : public Event - { - PioPort *port; - Packet *packet; - - SendEvent(PioPort *p, Packet *pkt, Tick t) - : Event(&mainEventQueue), port(p), packet(pkt) - { schedule(curTick + t); } - - virtual void process(); - - virtual const char *description() - { return "Future scheduled sendTiming event"; } - - friend class PioPort; - }; - - /** Number of timing requests that are emulating the device timing before - * attempting to end up on the bus. - */ - int outTiming; - - /** If we need to drain, keep the drain event around until we're done - * here.*/ - Event *drainEvent; - - /** Schedule a sendTiming() event to be called in the future. */ - void sendTiming(Packet *pkt, Tick time) - { outTiming++; new PioPort::SendEvent(this, pkt, time); } - - /** This function is notification that the device should attempt to send a - * packet again. */ - virtual void recvRetry(); - public: PioPort(PioDevice *dev, System *s, std::string pname = "-pioport"); - unsigned int drain(Event *de); - - friend class PioPort::SendEvent; }; |