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/*
* Copyright 2019 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 __ARCH_ARM_FASTMODEL_GIC_GIC_HH__
#define __ARCH_ARM_FASTMODEL_GIC_GIC_HH__
#include <amba_pv.h>
#include "arch/arm/fastmodel/amba_ports.hh"
#include "dev/arm/base_gic.hh"
#include "params/FastModelGIC.hh"
#include "params/SCFastModelGIC.hh"
#include "scx_evs_GIC.h"
#include "systemc/ext/core/sc_module_name.hh"
#include "systemc/sc_port_wrapper.hh"
namespace FastModel
{
// The fast model exports a class called scx_evs_GIC which represents
// the subsystem described in LISA+. This class specializes it to export gem5
// ports and interface with its peer gem5 GIC. The gem5 GIC inherits from the
// gem5 BaseGic class and implements its API, while this class actually does
// the work.
class SCGIC : public scx_evs_GIC
{
public:
SCGIC(const SCFastModelGICParams ¶ms, sc_core::sc_module_name _name);
SignalInterruptInitiatorSocket signalInterrupt;
void
end_of_elaboration() override
{
scx_evs_GIC::end_of_elaboration();
scx_evs_GIC::start_of_simulation();
}
void start_of_simulation() override {}
};
// This class pairs with the one above to implement the receiving end of gem5's
// GIC API. It acts as an interface which passes work to the fast model GIC,
// and lets the fast model GIC interact with the rest of the system.
class GIC : public BaseGic
{
private:
AmbaInitiator ambaM;
AmbaTarget ambaS;
AmbaInitiator redistributorM;
AmbaTarget redistributorS;
SCGIC *scGIC;
public:
GIC(const FastModelGICParams ¶ms);
Port &getPort(const std::string &if_name,
PortID idx=InvalidPortID) override;
void sendInt(uint32_t num) override;
void clearInt(uint32_t num) override;
void sendPPInt(uint32_t num, uint32_t cpu) override;
void clearPPInt(uint32_t num, uint32_t cpu) override;
AddrRangeList getAddrRanges() const override { return AddrRangeList(); }
Tick read(PacketPtr pkt) override { return 0; }
Tick write(PacketPtr pkt) override { return 0; }
};
} // namespace FastModel
#endif // __ARCH_ARM_FASTMODEL_GIC_GIC_HH__
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