memory mode information now contained in system object

States are now running, draining, or drained. memory state information moved into system object
system parameter is not fs only for cpus
Implement drain() support in devices
Update for drain() call that returns number of times drain_event->process() will be called

Break O3 CPU! No sense in putting in a hack change that kevin is going to remove in a few minutes i imagine

src/cpu/simple/atomic.cc:
src/cpu/simple/atomic.hh:
    Since se mode has a system, allow access to it
    Verify that the atomic cpu is connected to an atomic system on resume
src/cpu/simple/base.cc:
    Since se mode has a system, allow access to it
src/cpu/simple/timing.cc:
src/cpu/simple/timing.hh:
    Update for new drain() call that returns number of times drain_event->process() will be called and memory state being moved into the system
    Since se mode has a system, allow access to it
    Verify that the timing cpu is connected to an timing system on resume
src/dev/ide_disk.cc:
src/dev/io_device.cc:
src/dev/io_device.hh:
src/dev/ns_gige.cc:
src/dev/ns_gige.hh:
src/dev/pcidev.cc:
src/dev/pcidev.hh:
src/dev/sinic.cc:
src/dev/sinic.hh:
    Implement drain() support in devices
src/python/m5/config.py:
    Allow drain to return number of times drain_event->process() will be called. Normally 0 or 1 but things like O3 cpu or devices with multiple ports may want to call it many times
src/python/m5/objects/BaseCPU.py:
    move system parameter out of fs to everyone
src/sim/sim_object.cc:
src/sim/sim_object.hh:
    States are now running, draining, or drained. memory state information moved into system object
src/sim/system.cc:
src/sim/system.hh:
    memory mode information now contained in system object

--HG--
extra : convert_revision : 1389c77e66ee6d9710bf77b4306fb47e107b21cf

1 files changed, 37 insertions, 12 deletions

diff --git a/src/dev/io_device.hh b/src/dev/io_device.hh
index 40edf6875..fa3f98247 100644
--- a/src/dev/io_device.hh
+++ b/src/dev/io_device.hh
@@ -60,9 +60,9 @@ class PioPort : public Port
     /** The device that this port serves. */
     PioDevice *device;
 
-    /** The platform that device/port are in. This is used to select which mode
+    /** The system that device/port are in. This is used to select which mode
      * we are currently operating in. */
-    Platform *platform;
+    System *sys;
 
     /** A list of outgoing timing response packets that haven't been serviced
      * yet. */
@@ -106,16 +106,27 @@ class PioPort : public Port
         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)
-    { new PioPort::SendEvent(this, pkt, 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, Platform *p, std::string pname = "-pioport");
+    PioPort(PioDevice *dev, System *s, std::string pname = "-pioport");
+
+    unsigned int drain(Event *de);
 
   friend class PioPort::SendEvent;
 };
@@ -147,13 +158,20 @@ class DmaPort : public Port
     DmaDevice *device;
     std::list<Packet*> transmitList;
 
-    /** The platform that device/port are in. This is used to select which mode
+    /** The system that device/port are in. This is used to select which mode
      * we are currently operating in. */
-    Platform *platform;
+    System *sys;
 
     /** Number of outstanding packets the dma port has. */
     int pendingCount;
 
+    /** If a dmaAction is in progress. */
+    int actionInProgress;
+
+    /** If we need to drain, keep the drain event around until we're done
+     * here.*/
+    Event *drainEvent;
+
     virtual bool recvTiming(Packet *pkt);
     virtual Tick recvAtomic(Packet *pkt)
     { panic("dma port shouldn't be used for pio access."); }
@@ -171,13 +189,14 @@ class DmaPort : public Port
     void sendDma(Packet *pkt, bool front = false);
 
   public:
-    DmaPort(DmaDevice *dev, Platform *p);
+    DmaPort(DmaDevice *dev, System *s);
 
     void dmaAction(Packet::Command cmd, Addr addr, int size, Event *event,
                    uint8_t *data = NULL);
 
     bool dmaPending() { return pendingCount > 0; }
 
+    unsigned int drain(Event *de);
 };
 
 /**
@@ -196,6 +215,8 @@ class PioDevice : public MemObject
      * transaction we should perform. */
     Platform *platform;
 
+    System *sys;
+
     /** The pioPort that handles the requests for us and provides us requests
      * that it sees. */
     PioPort *pioPort;
@@ -240,20 +261,22 @@ class PioDevice : public MemObject
     const Params *params() const { return _params; }
 
     PioDevice(Params *p)
-              : MemObject(p->name),  platform(p->platform), pioPort(NULL),
-                _params(p)
+              : MemObject(p->name),  platform(p->platform), sys(p->system),
+              pioPort(NULL), _params(p)
               {}
 
     virtual ~PioDevice();
 
     virtual void init();
 
+    virtual unsigned int drain(Event *de);
+
     virtual Port *getPort(const std::string &if_name, int idx = -1)
     {
         if (if_name == "pio") {
             if (pioPort != NULL)
                 panic("pio port already connected to.");
-            pioPort = new PioPort(this, params()->platform);
+            pioPort = new PioPort(this, sys);
             return pioPort;
         } else
             return NULL;
@@ -310,17 +333,19 @@ class DmaDevice : public PioDevice
 
     bool dmaPending() { return dmaPort->dmaPending(); }
 
+    virtual unsigned int drain(Event *de);
+
     virtual Port *getPort(const std::string &if_name, int idx = -1)
     {
         if (if_name == "pio") {
             if (pioPort != NULL)
                 panic("pio port already connected to.");
-            pioPort = new PioPort(this, params()->platform);
+            pioPort = new PioPort(this, sys);
             return pioPort;
         } else if (if_name == "dma") {
             if (dmaPort != NULL)
                 panic("dma port already connected to.");
-            dmaPort = new DmaPort(this, params()->platform);
+            dmaPort = new DmaPort(this, sys);
             return dmaPort;
         } else
             return NULL;