18f62ac208
PS/2 devices are currently emulated both in the i8042 model and the Arm KMI model. This is undesirable since it leads to code duplication. This change introduces a common PS/2 device interface and factor out the x86 keyboard and mouse model. A subsequent commit will implement support for this interface in the Arm KMI model. Change-Id: I440e83517fd9dce362fdc1676db477cc6eee5211 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9762 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
115 lines
3.5 KiB
C++
115 lines
3.5 KiB
C++
/*
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* Copyright (c) 2017-2018 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2008 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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* Andreas Sandberg
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*/
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#include "dev/ps2/device.hh"
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#include "base/logging.hh"
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#include "dev/ps2.hh"
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#include "params/PS2Device.hh"
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PS2Device::PS2Device(const PS2DeviceParams *p)
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: SimObject(p)
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{
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}
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void
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PS2Device::serialize(CheckpointOut &cp) const
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{
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std::vector<uint8_t> buffer(outBuffer.size());
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std::copy(outBuffer.begin(), outBuffer.end(), buffer.begin());
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arrayParamOut(cp, "outBuffer", buffer);
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}
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void
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PS2Device::unserialize(CheckpointIn &cp)
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{
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std::vector<uint8_t> buffer;
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arrayParamIn(cp, "outBuffer", buffer);
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for (auto c : buffer)
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outBuffer.push_back(c);
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}
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void
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PS2Device::hostRegDataAvailable(const std::function<void()> &c)
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{
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fatal_if(dataAvailableCallback,
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"A data pending callback has already been associated with this "
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"PS/2 device.\n");
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dataAvailableCallback = c;
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}
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uint8_t
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PS2Device::hostRead()
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{
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uint8_t data = outBuffer.front();
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outBuffer.pop_front();
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return data;
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}
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void
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PS2Device::hostWrite(uint8_t c)
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{
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recv(c);
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}
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void
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PS2Device::send(const uint8_t *data, size_t size)
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{
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assert(data || size == 0);
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while (size) {
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outBuffer.push_back(*(data++));
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size--;
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}
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// Registering a callback is optional.
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if (dataAvailableCallback)
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dataAvailableCallback();
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}
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void
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PS2Device::sendAck()
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{
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send(Ps2::Ack);
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}
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