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/*
* Copyright 2018 Google, Inc.
*
* 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 __SYSTEMC_EXT_CHANNEL_SC_CLOCK_HH__
#define __SYSTEMC_EXT_CHANNEL_SC_CLOCK_HH__
#include "../core/sc_time.hh"
#include "sc_signal.hh"
namespace sc_gem5
{
class ClockTick;
} // namespace sc_gem5
namespace sc_core
{
template <class T>
class sc_in;
class sc_time;
class sc_clock : public sc_signal<bool>
{
public:
sc_clock();
explicit sc_clock(const char *name);
sc_clock(const char *name, const sc_time &period,
double duty_cycle=0.5, const sc_time &start_time=SC_ZERO_TIME,
bool posedge_first=true);
sc_clock(const char *name, double period_v, sc_time_unit period_tu,
double duty_cycle=0.5);
sc_clock(const char *name, double period_v, sc_time_unit period_tu,
double duty_cycle, double start_time_v,
sc_time_unit start_time_tu, bool posedge_first=true);
// Deprecated.
sc_clock(const char *name, double period, double duty_cycle=0.5,
double start_time=0.0, bool posedge_first=true);
virtual ~sc_clock();
virtual void write(const bool &);
const sc_time &period() const;
double duty_cycle() const;
const sc_time &start_time() const;
bool posedge_first() const;
// Nonstandard
static const sc_time &time_stamp();
virtual const char *kind() const { return "sc_clock"; }
protected:
virtual void before_end_of_elaboration();
private:
friend class ::sc_gem5::ClockTick;
// Disabled
sc_clock(const sc_clock &) : sc_interface(), sc_signal<bool>() {}
sc_clock &operator = (const sc_clock &) { return *this; }
sc_time _period;
double _dutyCycle;
sc_time _startTime;
bool _posedgeFirst;
::sc_gem5::ClockTick *_gem5UpEdge;
::sc_gem5::ClockTick *_gem5DownEdge;
void
tickUp()
{
m_new_val = true;
request_update();
}
void
tickDown()
{
m_new_val = false;
request_update();
}
};
typedef sc_in<bool> sc_in_clk;
// Deprecated
typedef sc_inout<bool> sc_inout_clk;
typedef sc_out<bool> sc_out_clk;
} // namespace sc_core
#endif //__SYSTEMC_EXT_CHANNEL_SC_CLOCK_HH__
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