HIFIVE1-VP/riscv.sc/incl/sysc/SiFive/plic.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
//
//
////////////////////////////////////////////////////////////////////////////////
#ifndef _PLIC_H_
#define _PLIC_H_
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#include <scc/register.h>
#include <scc/tlm_target.h>
namespace sysc {
class plic_regs;
class plic : public sc_core::sc_module, public scc::tlm_target<> {
public:
SC_HAS_PROCESS(plic);
sc_core::sc_in<sc_core::sc_time> clk_i;
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sc_core::sc_in<bool> rst_i;
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sc_core::sc_vector<sc_core::sc_in<bool>> global_interrupts_i;
sc_core::sc_out<bool> core_interrupt_o;
sc_core::sc_event raise_int_ev;
sc_core::sc_event clear_int_ev;
plic(sc_core::sc_module_name nm);
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~plic() override;
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protected:
void clock_cb();
void reset_cb();
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void init_callbacks();
void global_int_port_cb();
void handle_pending_int();
void reset_pending_int(uint32_t irq);
void raise_core_interrupt();
void clear_core_interrupt();
sc_core::sc_time clk;
std::unique_ptr<plic_regs> regs;
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std::function<bool(scc::sc_register<uint32_t>, uint32_t)> m_claim_complete_write_cb;
};
} /* namespace sysc */
#endif /* _PLIC_H_ */