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 #include <cstring>
  36
  37 #include "base/chunk_generator.hh"
  38 #include "base/trace.hh"
  39 #include "mem/mem_object.hh"
  40 #include "mem/port.hh"
  41
  42 void
  43 Port::setPeer(Port *port)
  44 {
  45     DPRINTF(Config, "setting peer to %s\n", port->name());
  46     peer = port;
  47 }
  48
  49 void
  50 Port::removeConn()
  51 {
  52     if (peer->getOwner())
  53         peer->getOwner()->deletePortRefs(peer);
  54     peer = NULL;
  55 }
  56
  57 void
  58 Port::blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd)
  59 {
  60     Request req;
  61     Packet pkt(&req, cmd, Packet::Broadcast);
  62
  63     for (ChunkGenerator gen(addr, size, peerBlockSize());
  64          !gen.done(); gen.next()) {
  65         req.setPhys(gen.addr(), gen.size(), 0);
  66         pkt.reinitFromRequest();
  67         pkt.dataStatic(p);
  68         sendFunctional(&pkt);
  69         p += gen.size();
  70     }
  71 }
  72
  73 void
  74 Port::writeBlob(Addr addr, uint8_t *p, int size)
  75 {
  76     blobHelper(addr, p, size, MemCmd::WriteReq);
  77 }
  78
  79 void
  80 Port::readBlob(Addr addr, uint8_t *p, int size)
  81 {
  82     blobHelper(addr, p, size, MemCmd::ReadReq);
  83 }
  84
  85 void
  86 Port::memsetBlob(Addr addr, uint8_t val, int size)
  87 {
  88     // quick and dirty...
  89     uint8_t *buf = new uint8_t[size];
  90
  91     std::memset(buf, val, size);
  92     blobHelper(addr, buf, size, MemCmd::WriteReq);
  93
  94     delete [] buf;
  95 }