src/mem/port.cc

   1 /*
   2  * Copyright (c) 2002-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Steve Reinhardt
  29  */
  30
  31 /**
  32  * @file
  33  * Port object definitions.
  34  */
  35
  36 #include "base/chunk_generator.hh"
  37 #include "base/trace.hh"
  38 #include "mem/port.hh"
  39
  40 void
  41 Port::setPeer(Port *port)
  42 {
  43     DPRINTF(Config, "setting peer to %s\n", port->name());
  44     peer = port;
  45 }
  46
  47 void
  48 Port::blobHelper(Addr addr, uint8_t *p, int size, Packet::Command cmd)
  49 {
  50     Request req;
  51     Packet pkt(&req, cmd, Packet::Broadcast);
  52
  53     for (ChunkGenerator gen(addr, size, peerBlockSize());
  54          !gen.done(); gen.next()) {
  55         req.setPhys(gen.addr(), gen.size(), 0);
  56         pkt.reinitFromRequest();
  57         pkt.dataStatic(p);
  58         sendFunctional(&pkt);
  59         p += gen.size();
  60     }
  61 }
  62
  63 void
  64 Port::writeBlob(Addr addr, uint8_t *p, int size)
  65 {
  66     blobHelper(addr, p, size, Packet::WriteReq);
  67 }
  68
  69 void
  70 Port::readBlob(Addr addr, uint8_t *p, int size)
  71 {
  72     blobHelper(addr, p, size, Packet::ReadReq);
  73 }
  74
  75 void
  76 Port::memsetBlob(Addr addr, uint8_t val, int size)
  77 {
  78     // quick and dirty...
  79     uint8_t *buf = new uint8_t[size];
  80
  81     memset(buf, val, size);
  82     blobHelper(addr, buf, size, Packet::WriteReq);
  83
  84     delete [] buf;
  85 }