[crorc] Add pushed Superpage counter check function

Author: kostorr

src/Crorc/CrorcBar.cxx

@@ -404,5 +404,21 @@ Crorc::PacketMonitoringInfo CrorcBar::monitorPackets()
   return { acquisitionRate, packetsReceived };
 }
 
+bool CrorcBar::isASuperpageAvailable()
+{
+  static uint32_t previousAvailable = 0x0;
+  uint32_t currentAvailable = readRegister(0x30 / 4);
+  uint32_t diff;
+  if (currentAvailable < previousAvailable) { // warped
+    diff = (0x100000000 - 0xffffffff) + currentAvailable;
+  } else {
+    diff = currentAvailable - previousAvailable;
+  }
+
+  previousAvailable = currentAvailable;
+
+  return diff > 0;
+}
+
 } // namespace roc
 } // namespace o2

src/Crorc/CrorcBar.h

@@ -69,6 +69,8 @@ class CrorcBar final : public BarInterfaceBase
   void setSiuLoopback();
   Crorc::PacketMonitoringInfo monitorPackets();
 
+  bool isASuperpageAvailable();
+
  private:
   std::map<int, Crorc::Link> initializeLinkMap();
 

src/Crorc/CrorcDmaChannel.cxx

@@ -299,7 +299,6 @@ void CrorcDmaChannel::fillSuperpages()
 
     while (mFreeFifoSize > 0) {
       if (isArrived(mFreeFifoBack)) {
-        //size_t superpageFilled = SUPERPAGE_SIZE; // Get the length before updating our descriptor index
         size_t superpageFilled = getLength(mFreeFifoBack); // Get the length before updating our descriptor index
         resetDescriptor(mFreeFifoBack);