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/*
* Copyright (c) 2017-2018 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) 2008 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: Gabe Black
* Andreas Sandberg
*/
#include "dev/ps2/device.hh"
#include "base/logging.hh"
#include "debug/PS2.hh"
#include "dev/ps2/types.hh"
#include "params/PS2Device.hh"
PS2Device::PS2Device(const PS2DeviceParams *p)
: SimObject(p)
{
inBuffer.reserve(16);
}
void
PS2Device::serialize(CheckpointOut &cp) const
{
std::vector<uint8_t> buffer(outBuffer.size());
std::copy(outBuffer.begin(), outBuffer.end(), buffer.begin());
arrayParamOut(cp, "outBuffer", buffer);
SERIALIZE_CONTAINER(inBuffer);
}
void
PS2Device::unserialize(CheckpointIn &cp)
{
std::vector<uint8_t> buffer;
arrayParamIn(cp, "outBuffer", buffer);
for (auto c : buffer)
outBuffer.push_back(c);
UNSERIALIZE_CONTAINER(inBuffer);
}
void
PS2Device::hostRegDataAvailable(const std::function<void()> &c)
{
fatal_if(dataAvailableCallback,
"A data pending callback has already been associated with this "
"PS/2 device.\n");
dataAvailableCallback = c;
}
uint8_t
PS2Device::hostRead()
{
uint8_t data = outBuffer.front();
outBuffer.pop_front();
return data;
}
void
PS2Device::hostWrite(uint8_t c)
{
DPRINTF(PS2, "PS2: Host -> device: %#x\n", c);
inBuffer.push_back(c);
if (recv(inBuffer))
inBuffer.clear();
}
void
PS2Device::send(const uint8_t *data, size_t size)
{
assert(data || size == 0);
while (size) {
DPRINTF(PS2, "PS2: Device -> host: %#x\n", *data);
outBuffer.push_back(*(data++));
size--;
}
// Registering a callback is optional.
if (dataAvailableCallback)
dataAvailableCallback();
}
void
PS2Device::sendAck()
{
send(Ps2::Ack);
}
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