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/*
* 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
*/
#ifndef __DEV_X86_I8042_HH__
#define __DEV_X86_I8042_HH__
#include "dev/io_device.hh"
#include "dev/x86/intdev.hh"
#include "params/I8042.hh"
#include <queue>
namespace X86ISA
{
class IntPin;
class I8042 : public BasicPioDevice
{
protected:
BitUnion8(StatusReg)
Bitfield<7> parityError;
Bitfield<6> timeout;
Bitfield<5> mouseOutputFull;
Bitfield<4> keyboardUnlocked;
Bitfield<3> commandLast;
Bitfield<2> passedSelfTest;
Bitfield<1> inputFull;
Bitfield<0> outputFull;
EndBitUnion(StatusReg)
BitUnion8(CommandByte)
Bitfield<6> convertScanCodes;
Bitfield<5> disableMouse;
Bitfield<4> disableKeyboard;
Bitfield<2> passedSelfTest;
Bitfield<1> mouseFullInt;
Bitfield<0> keyboardFullInt;
EndBitUnion(CommandByte)
Tick latency;
Addr dataPort;
Addr commandPort;
StatusReg statusReg;
CommandByte commandByte;
uint8_t dataReg;
static const uint16_t NoCommand = (uint16_t)(-1);
uint16_t lastCommand;
BitUnion8(MouseStatus)
Bitfield<6> remote;
Bitfield<5> enabled;
Bitfield<4> twoToOne;
Bitfield<2> leftButton;
Bitfield<0> rightButton;
EndBitUnion(MouseStatus)
IntSourcePin *mouseIntPin;
std::queue<uint8_t> mouseBuffer;
uint16_t lastMouseCommand;
uint8_t mouseResolution;
uint8_t mouseSampleRate;
MouseStatus mouseStatus;
IntSourcePin *keyboardIntPin;
std::queue<uint8_t> keyboardBuffer;
uint16_t lastKeyboardCommand;
bool writeData(uint8_t newData, bool mouse = false);
void keyboardAck();
void writeKeyboardData(const uint8_t *data, int size);
void mouseAck();
void mouseNack();
void writeMouseData(const uint8_t *data, int size);
uint8_t readDataOut();
public:
typedef I8042Params Params;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
I8042(Params *p) : BasicPioDevice(p), latency(p->pio_latency),
dataPort(p->data_port), commandPort(p->command_port),
statusReg(0), commandByte(0), dataReg(0), lastCommand(NoCommand),
mouseIntPin(p->mouse_int_pin), lastMouseCommand(NoCommand),
keyboardIntPin(p->keyboard_int_pin),
lastKeyboardCommand(NoCommand)
{
statusReg.passedSelfTest = 1;
statusReg.commandLast = 1;
statusReg.keyboardUnlocked = 1;
commandByte.convertScanCodes = 1;
commandByte.passedSelfTest = 1;
commandByte.keyboardFullInt = 1;
}
void addressRanges(AddrRangeList &range_list);
Tick read(PacketPtr pkt);
Tick write(PacketPtr pkt);
};
}; // namespace X86ISA
#endif //__DEV_X86_I8042_HH__
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