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

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////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017, MINRES Technologies GmbH
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER 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.
//
// Contributors:
// eyck@minres.com - initial implementation
//
//
////////////////////////////////////////////////////////////////////////////////
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#ifndef _CLINT_H_
#define _CLINT_H_
#include "scc/tlm_target.h"
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namespace iss {
namespace arch {
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template <typename BASE> class riscv_hart_msu_vp;
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}
}
namespace sysc {
class clint_regs;
namespace SiFive {
class core_complex;
}
class clint : public sc_core::sc_module, public scc::tlm_target<> {
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public:
SC_HAS_PROCESS(clint);
sc_core::sc_in<sc_core::sc_time> tlclk_i;
sc_core::sc_in<sc_core::sc_time> lfclk_i;
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sc_core::sc_in<bool> rst_i;
sc_core::sc_out<bool> mtime_int_o;
sc_core::sc_out<bool> msip_int_o;
clint(sc_core::sc_module_name nm);
virtual ~clint() override; // need to keep it in source file because of fwd declaration of clint_regs
protected:
void clock_cb();
void reset_cb();
void update_mtime();
sc_core::sc_time clk, last_updt;
unsigned cnt_fraction;
std::unique_ptr<clint_regs> regs;
sc_core::sc_event mtime_evt;
};
} /* namespace sysc */
#endif /* _CLINT_H_ */