/*
 * Copyright (c) 2010, 2019 ARM Limited
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 *
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 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * 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
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 */

#include "dev/arm/amba_fake.hh"

#include "base/trace.hh"
#include "debug/AMBA.hh"
#include "mem/packet.hh"
#include "mem/packet_access.hh"

namespace gem5
{

AmbaFake::AmbaFake(const Params &p)
    : AmbaPioDevice(p, 0x1000)
{
}

Tick
AmbaFake::read(PacketPtr pkt)
{
    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);

    Addr daddr = pkt->getAddr() - pioAddr;

    DPRINTF(AMBA, " read register %#x\n", daddr);

    pkt->setLE<uint32_t>(0);
    if (!readId(pkt, ambaId, pioAddr) && !params().ignore_access)
        panic("Tried to read AmbaFake %s at offset %#x that doesn't exist\n",
              name(), daddr);

    pkt->makeAtomicResponse();
    return pioDelay;
}

Tick
AmbaFake::write(PacketPtr pkt)
{

    Addr daddr = pkt->getAddr() - pioAddr;

    if (!params().ignore_access)
        panic("Tried to write AmbaFake %s at offset %#x that doesn't exist\n",
              name(), daddr);

    pkt->makeAtomicResponse();
    return pioDelay;
}

} // namespace gem5