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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 <deque>
#include "dev/io_device.hh"
#include "dev/ps2/device.hh"
#include "dev/x86/intdev.hh"
#include "params/I8042.hh"
namespace X86ISA
{
class IntPin;
class I8042 : public BasicPioDevice
{
protected:
enum Command
{
GetCommandByte = 0x20,
ReadControllerRamBase = 0x20,
WriteCommandByte = 0x60,
WriteControllerRamBase = 0x60,
CheckForPassword = 0xA4,
LoadPassword = 0xA5,
CheckPassword = 0xA6,
DisableMouse = 0xA7,
EnableMouse = 0xA8,
TestMouse = 0xA9,
SelfTest = 0xAA,
InterfaceTest = 0xAB,
DiagnosticDump = 0xAC,
DisableKeyboard = 0xAD,
EnableKeyboard = 0xAE,
ReadInputPort = 0xC0,
ContinuousPollLow = 0xC1,
ContinuousPollHigh = 0xC2,
ReadOutputPort = 0xD0,
WriteOutputPort = 0xD1,
WriteKeyboardOutputBuff = 0xD2,
WriteMouseOutputBuff = 0xD3,
WriteToMouse = 0xD4,
DisableA20 = 0xDD,
EnableA20 = 0xDF,
ReadTestInputs = 0xE0,
PulseOutputBitBase = 0xF0,
SystemReset = 0xFE
};
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;
IntSourcePin *mouseIntPin;
IntSourcePin *keyboardIntPin;
PS2Device *mouse;
PS2Device *keyboard;
void writeData(uint8_t newData, bool mouse = false);
uint8_t readDataOut();
public:
typedef I8042Params Params;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
I8042(Params *p);
AddrRangeList getAddrRanges() const override;
Tick read(PacketPtr pkt) override;
Tick write(PacketPtr pkt) override;
void serialize(CheckpointOut &cp) const override;
void unserialize(CheckpointIn &cp) override;
};
} // namespace X86ISA
#endif //__DEV_X86_I8042_HH__
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