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/*
* Copyright (c) 2012 ARM Limited
* All rights reserved.
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Ali Saidi
* Nathan Binkert
*/
#include "base/trace.hh"
#include "debug/BusAddrRanges.hh"
#include "dev/io_device.hh"
#include "sim/system.hh"
PioPort::PioPort(PioDevice *dev)
: SimpleTimingPort(dev->name() + ".pio", dev), device(dev)
{
}
Tick
PioPort::recvAtomic(PacketPtr pkt)
{
// @todo: We need to pay for this and not just zero it out
pkt->busFirstWordDelay = pkt->busLastWordDelay = 0;
return pkt->isRead() ? device->read(pkt) : device->write(pkt);
}
AddrRangeList
PioPort::getAddrRanges() const
{
return device->getAddrRanges();
}
PioDevice::PioDevice(const Params *p)
: MemObject(p), sys(p->system), pioPort(this)
{}
PioDevice::~PioDevice()
{
}
void
PioDevice::init()
{
if (!pioPort.isConnected())
panic("Pio port of %s not connected to anything!", name());
pioPort.sendRangeChange();
}
BaseSlavePort &
PioDevice::getSlavePort(const std::string &if_name, PortID idx)
{
if (if_name == "pio") {
return pioPort;
}
return MemObject::getSlavePort(if_name, idx);
}
unsigned int
PioDevice::drain(DrainManager *dm)
{
unsigned int count;
count = pioPort.drain(dm);
if (count)
setDrainState(Drainable::Draining);
else
setDrainState(Drainable::Drained);
return count;
}
BasicPioDevice::BasicPioDevice(const Params *p)
: PioDevice(p), pioAddr(p->pio_addr), pioSize(0),
pioDelay(p->pio_latency)
{}
AddrRangeList
BasicPioDevice::getAddrRanges() const
{
assert(pioSize != 0);
AddrRangeList ranges;
DPRINTF(BusAddrRanges, "registering range: %#x-%#x\n", pioAddr, pioSize);
ranges.push_back(RangeSize(pioAddr, pioSize));
return ranges;
}
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