src/dev/io_device.cc

   1 /*
   2  * Copyright (c) 2012, 2015 ARM Limited
   3  * All rights reserved.
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2006 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Ali Saidi
  41  *          Nathan Binkert
  42  */
  43
  44 #include "dev/io_device.hh"
  45
  46 #include "base/trace.hh"
  47 #include "debug/AddrRanges.hh"
  48 #include "sim/system.hh"
  49
  50 PioDevice::PioDevice(const Params *p)
  51     : ClockedObject(p), sys(p->system), pioPort(this)
  52 {}
  53
  54 PioDevice::~PioDevice()
  55 {
  56 }
  57
  58 void
  59 PioDevice::init()
  60 {
  61     if (!pioPort.isConnected())
  62         panic("Pio port of %s not connected to anything!", name());
  63     pioPort.sendRangeChange();
  64 }
  65
  66 Port &
  67 PioDevice::getPort(const std::string &if_name, PortID idx)
  68 {
  69     if (if_name == "pio") {
  70         return pioPort;
  71     }
  72     return ClockedObject::getPort(if_name, idx);
  73 }
  74
  75 BasicPioDevice::BasicPioDevice(const Params *p, Addr size)
  76     : PioDevice(p), pioAddr(p->pio_addr), pioSize(size),
  77       pioDelay(p->pio_latency)
  78 {}
  79
  80 AddrRangeList
  81 BasicPioDevice::getAddrRanges() const
  82 {
  83     assert(pioSize != 0);
  84     AddrRangeList ranges;
  85     DPRINTF(AddrRanges, "registering range: %#x-%#x\n", pioAddr, pioSize);
  86     ranges.push_back(RangeSize(pioAddr, pioSize));
  87     return ranges;
  88 }