diff --git a/src/dev/io_device.cc b/src/dev/io_device.cc
index bfdf3d486..5e2395bf9 100644
--- a/src/dev/io_device.cc
+++ b/src/dev/io_device.cc
@@ -75,6 +75,18 @@ PioDevice::init()
     pioPort->sendStatusChange(Port::RangeChange);
 }
 
+Port *
+PioDevice::getPort(const std::string &if_name, int idx)
+{
+    if (if_name == "pio") {
+        if (pioPort != NULL)
+            fatal("%s: pio port already connected to %s",
+                  name(), pioPort->getPeer()->name());
+        pioPort = new PioPort(this, sys);
+        return pioPort;
+    }
+    return NULL;
+}
 
 unsigned int
 PioDevice::drain(Event *de)
@@ -349,3 +361,19 @@ DmaDevice::~DmaDevice()
     if (dmaPort)
         delete dmaPort;
 }
+
+
+Port *
+DmaDevice::getPort(const std::string &if_name, int idx)
+{
+    if (if_name == "dma") {
+        if (dmaPort != NULL)
+            fatal("%s: dma port already connected to %s",
+                  name(), dmaPort->getPeer()->name());
+        dmaPort = new DmaPort(this, sys, params()->min_backoff_delay,
+                              params()->max_backoff_delay);
+        return dmaPort;
+    }
+    return PioDevice::getPort(if_name, idx);
+}
+
diff --git a/src/dev/io_device.hh b/src/dev/io_device.hh
index bc6f1d4f7..812c276d6 100644
--- a/src/dev/io_device.hh
+++ b/src/dev/io_device.hh
@@ -215,17 +215,8 @@ class PioDevice : public MemObject
 
     virtual unsigned int drain(Event *de);
 
-    virtual Port *getPort(const std::string &if_name, int idx = -1)
-    {
-        if (if_name == "pio") {
-            if (pioPort != NULL)
-                fatal("%s: pio port already connected to %s",
-                      name(), pioPort->getPeer()->name());
-            pioPort = new PioPort(this, sys);
-            return pioPort;
-        } else
-            return NULL;
-    }
+    virtual Port *getPort(const std::string &if_name, int idx = -1);
+
     friend class PioPort;
 
 };
@@ -291,24 +282,7 @@ class DmaDevice : public PioDevice
 
     unsigned cacheBlockSize() const { return dmaPort->cacheBlockSize(); }
 
-    virtual Port *getPort(const std::string &if_name, int idx = -1)
-    {
-        if (if_name == "pio") {
-            if (pioPort != NULL)
-                fatal("%s: pio port already connected to %s",
-                      name(), pioPort->getPeer()->name());
-            pioPort = new PioPort(this, sys);
-            return pioPort;
-        } else if (if_name == "dma") {
-            if (dmaPort != NULL)
-                fatal("%s: dma port already connected to %s",
-                      name(), dmaPort->getPeer()->name());
-            dmaPort = new DmaPort(this, sys, params()->min_backoff_delay,
-                    params()->max_backoff_delay);
-            return dmaPort;
-        } else
-            return NULL;
-    }
+    virtual Port *getPort(const std::string &if_name, int idx = -1);
 
     friend class DmaPort;
 };