device.cc revision 12653:4f6b6c1a8e2f
1/* 2 * Copyright (c) 2017-2018 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) 2008 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: Gabe Black 41 * Andreas Sandberg 42 */ 43 44#include "dev/ps2/device.hh" 45 46#include "base/logging.hh" 47#include "dev/ps2.hh" 48#include "params/PS2Device.hh" 49 50PS2Device::PS2Device(const PS2DeviceParams *p) 51 : SimObject(p) 52{ 53} 54 55void 56PS2Device::serialize(CheckpointOut &cp) const 57{ 58 std::vector<uint8_t> buffer(outBuffer.size()); 59 std::copy(outBuffer.begin(), outBuffer.end(), buffer.begin()); 60 arrayParamOut(cp, "outBuffer", buffer); 61} 62 63void 64PS2Device::unserialize(CheckpointIn &cp) 65{ 66 std::vector<uint8_t> buffer; 67 arrayParamIn(cp, "outBuffer", buffer); 68 for (auto c : buffer) 69 outBuffer.push_back(c); 70} 71 72void 73PS2Device::hostRegDataAvailable(const std::function<void()> &c) 74{ 75 fatal_if(dataAvailableCallback, 76 "A data pending callback has already been associated with this " 77 "PS/2 device.\n"); 78 79 dataAvailableCallback = c; 80} 81 82uint8_t 83PS2Device::hostRead() 84{ 85 uint8_t data = outBuffer.front(); 86 outBuffer.pop_front(); 87 return data; 88} 89 90void 91PS2Device::hostWrite(uint8_t c) 92{ 93 recv(c); 94} 95 96void 97PS2Device::send(const uint8_t *data, size_t size) 98{ 99 assert(data || size == 0); 100 while (size) { 101 outBuffer.push_back(*(data++)); 102 size--; 103 } 104 105 // Registering a callback is optional. 106 if (dataAvailableCallback) 107 dataAvailableCallback(); 108} 109 110void 111PS2Device::sendAck() 112{ 113 send(Ps2::Ack); 114} 115