HIFIVE1-VP/riscv.sc/incl/sysc/SiFive/gpio.h

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/*******************************************************************************
* Copyright 2017 eyck@minres.com
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*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
******************************************************************************/
#ifndef _GPIO_H_
#define _GPIO_H_
#include "scc/tlm_target.h"
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#include "scc/ext_attribute.h"
#include <sysc/communication/sc_signal_rv_ports.h>
namespace sysc {
class gpio_regs;
class WsHandler;
class gpio : public sc_core::sc_module, public scc::tlm_target<> {
public:
SC_HAS_PROCESS(gpio);
sc_core::sc_in<sc_core::sc_time> clk_i;
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sc_core::sc_in<bool> rst_i;
sc_core::sc_inout_rv<32> pins_io;
gpio(sc_core::sc_module_name nm);
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virtual ~gpio() override; // need to keep it in source file because of fwd declaration of gpio_regs
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scc::ext_attribute<bool> write_to_ws;
protected:
void clock_cb();
void reset_cb();
void update_pins();
void pins_cb();
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void before_end_of_elaboration();
sc_core::sc_time clk;
std::unique_ptr<gpio_regs> regs;
std::shared_ptr<sysc::WsHandler> handler;
private:
void update_value_reg();
};
} /* namespace sysc */
#endif /* _GPIO_H_ */