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
  29 /**
  30  * @file Port object definitions.
  31  */
  32
  33 #include "base/chunk_generator.hh"
  34 #include "base/trace.hh"
  35 #include "mem/packet_impl.hh"
  36 #include "mem/port.hh"
  37
  38 void
  39 Port::setPeer(Port *port)
  40 {
  41     DPRINTF(Config, "setting peer to %s\n", port->name());
  42     peer = port;
  43 }
  44
  45 void
  46 Port::blobHelper(Addr addr, uint8_t *p, int size, Packet::Command cmd)
  47 {
  48     Request req;
  49     Packet pkt(&req, cmd, Packet::Broadcast);
  50
  51     for (ChunkGenerator gen(addr, size, peerBlockSize());
  52          !gen.done(); gen.next()) {
  53         req.setPhys(gen.addr(), gen.size(), 0);
  54         pkt.reinitFromRequest();
  55         pkt.dataStatic(p);
  56         sendFunctional(&pkt);
  57         p += gen.size();
  58     }
  59 }
  60
  61 void
  62 Port::writeBlob(Addr addr, uint8_t *p, int size)
  63 {
  64     blobHelper(addr, p, size, Packet::WriteReq);
  65 }
  66
  67 void
  68 Port::readBlob(Addr addr, uint8_t *p, int size)
  69 {
  70     blobHelper(addr, p, size, Packet::ReadReq);
  71 }
  72
  73 void
  74 Port::memsetBlob(Addr addr, uint8_t val, int size)
  75 {
  76     // quick and dirty...
  77     uint8_t *buf = new uint8_t[size];
  78
  79     memset(buf, val, size);
  80     blobHelper(addr, buf, size, Packet::WriteReq);
  81
  82     delete [] buf;
  83 }