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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_I8254_HH__
#define __DEV_X86_I8254_HH__
#include "dev/intel_8254_timer.hh"
#include "dev/intpin.hh"
#include "dev/io_device.hh"
#include "params/I8254.hh"
namespace X86ISA
{
class I8254 : public BasicPioDevice
{
protected:
Tick latency;
class X86Intel8254Timer : public Intel8254Timer
{
protected:
I8254 * parent;
void
counterInterrupt(unsigned int num)
{
parent->counterInterrupt(num);
}
public:
X86Intel8254Timer(const std::string &name, I8254 * _parent) :
Intel8254Timer(_parent, name), parent(_parent)
{}
};
X86Intel8254Timer pit;
std::vector<IntSourcePin<I8254> *> intPin;
void counterInterrupt(unsigned int num);
public:
typedef I8254Params Params;
Port &
getPort(const std::string &if_name, PortID idx=InvalidPortID) override
{
if (if_name == "int_pin")
return *intPin.at(idx);
else
return BasicPioDevice::getPort(if_name, idx);
}
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
I8254(Params *p) : BasicPioDevice(p, 4), latency(p->pio_latency),
pit(p->name, this)
{
for (int i = 0; i < p->port_int_pin_connection_count; i++) {
intPin.push_back(new IntSourcePin<I8254>(csprintf(
"%s.int_pin[%d]", name(), i), i, this));
}
}
Tick read(PacketPtr pkt) override;
Tick write(PacketPtr pkt) override;
bool
outputHigh(unsigned int num)
{
return pit.outputHigh(num);
}
uint8_t
readCounter(unsigned int num)
{
return pit.readCounter(num);
}
void
writeCounter(unsigned int num, const uint8_t data)
{
pit.writeCounter(num, data);
}
void
writeControl(uint8_t val)
{
pit.writeControl(val);
}
void serialize(CheckpointOut &cp) const override;
void unserialize(CheckpointIn &cp) override;
void startup() override;
};
} // namespace X86ISA
#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__
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