| /* |
| * 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. |
| */ |
| |
| #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: |
| using Params = I8254Params; |
| |
| 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); |
| } |
| |
| I8254(const 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__ |