c0ca47b6ed
By design SimObject should initialize its state at init() stage. However, the original intpin design will try to reset the sink side when binding. This could cause unexpected issue as the other side does not init() yet. To align with the design, the call to upper()/lower() should be left to the initiator in the init() function instead of constructor. Change-Id: Iec8b228715d093381a33e747849119562bd634e1 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60751 Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Yu-hsin Wang <yuhsingw@google.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/*
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* Copyright 2019 Google, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DEV_INTPIN_HH__
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#define __DEV_INTPIN_HH__
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#include "sim/port.hh"
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namespace gem5
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{
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class IntSourcePinBase;
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class IntSinkPinBase : public Port
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{
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protected:
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friend IntSourcePinBase;
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IntSourcePinBase *source = nullptr;
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int _number = 0;
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bool _state = false;
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IntSinkPinBase(const std::string &_name, PortID _id, int num) :
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Port(_name, _id), _number(num)
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{}
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virtual void raiseOnDevice() = 0;
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virtual void lowerOnDevice() = 0;
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void
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raise()
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{
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_state = true;
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raiseOnDevice();
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}
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void
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lower()
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{
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_state = false;
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lowerOnDevice();
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}
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public:
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int number() { return _number; }
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bool state() { return _state; }
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void bind(Port &peer) override;
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void unbind() override;
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};
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template <class Device>
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class IntSinkPin : public IntSinkPinBase
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{
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private:
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Device *device = nullptr;
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void raiseOnDevice() override { device->raiseInterruptPin(number()); }
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void lowerOnDevice() override { device->lowerInterruptPin(number()); }
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public:
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IntSinkPin(const std::string &_name, PortID _id, Device *dev, int num) :
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IntSinkPinBase(_name, _id, num), device(dev) {}
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IntSinkPin(const std::string &_name, PortID _id, Device *dev) :
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IntSinkPin(_name, _id, dev, _id) {}
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};
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class IntSourcePinBase : public Port
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{
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private:
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IntSinkPinBase *sink = nullptr;
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public:
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IntSourcePinBase(const std::string &_name, PortID _id):
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Port(_name, _id)
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{}
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void raise() { sink->raise(); }
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void lower() { sink->lower(); }
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void bind(Port &peer) override;
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void unbind() override;
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};
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template <class Device>
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class IntSourcePin : public IntSourcePinBase
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{
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public:
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IntSourcePin(const std::string &_name, PortID _id, Device *owner) :
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IntSourcePinBase(_name, _id)
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{}
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};
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} // namespace gem5
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#endif //__DEV_INTPIN_HH__
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