Subversion Repositories bluespec-80211atransmitter

// The MIT License
//
// Copyright (c) 2006 Nirav Dave (ndave@csail.mit.edu)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.




import FIFOF::*;

interface MFIFO#(type alpha);
   method Action enq(alpha x);
   method Action deq();
   method Maybe#(alpha) first();
   method Action clear();   
endinterface

module mkMFIFO(MFIFO#(alpha)) provisos(Bits#(alpha, asx));
   
   FIFOF#(alpha) f <- mkUGFIFOF();
   
   method Action enq(x) if(f.notFull);
      f.enq(x);
   endmethod

   method Action deq();
     if (f.notEmpty)
        f.deq();
   endmethod
   
   method Maybe#(alpha) first();
    return (f.notEmpty) ? Just(f.first()) : Nothing;
   endmethod
   
   method Action clear();
      f.clear();
   endmethod
                              
endmodule