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 * 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.
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "dev/arm/smmu_v3_ports.hh"

#include "base/logging.hh"
#include "dev/arm/smmu_v3.hh"
#include "dev/arm/smmu_v3_deviceifc.hh"

namespace gem5
{

SMMURequestPort::SMMURequestPort(const std::string &_name, SMMUv3 &_smmu) :
    RequestPort(_name),
    smmu(_smmu)
{}

bool
SMMURequestPort::recvTimingResp(PacketPtr pkt)
{
    return smmu.recvTimingResp(pkt);
}

void
SMMURequestPort::recvReqRetry()
{
    return smmu.recvReqRetry();
}

SMMUTableWalkPort::SMMUTableWalkPort(const std::string &_name,
                                                 SMMUv3 &_smmu) :
    RequestPort(_name),
    smmu(_smmu)
{}

bool
SMMUTableWalkPort::recvTimingResp(PacketPtr pkt)
{
    return smmu.tableWalkRecvTimingResp(pkt);
}

void
SMMUTableWalkPort::recvReqRetry()
{
    return smmu.tableWalkRecvReqRetry();
}

SMMUDevicePort::SMMUDevicePort(const std::string &_name,
                             SMMUv3DeviceInterface &_ifc,
                             PortID _id)
:
    QueuedResponsePort(_name, respQueue, _id),
    ifc(_ifc),
    respQueue(_ifc, *this)
{}

void
SMMUDevicePort::recvFunctional(PacketPtr pkt)
{
    if (!respQueue.trySatisfyFunctional(pkt))
        recvAtomic(pkt);
}

Tick
SMMUDevicePort::recvAtomic(PacketPtr pkt)
{
    return ifc.recvAtomic(pkt);
}

bool
SMMUDevicePort::recvTimingReq(PacketPtr pkt)
{
    return ifc.recvTimingReq(pkt);
}

SMMUControlPort::SMMUControlPort(const std::string &_name,
                                 SMMUv3 &_smmu, AddrRange _addrRange)
:
    SimpleTimingPort(_name, &_smmu),
    smmu(_smmu),
    addrRange(_addrRange)
{}

Tick
SMMUControlPort::recvAtomic(PacketPtr pkt)
{
    Addr addr = pkt->getAddr();
    unsigned size = pkt->getSize();

    if (!addrRange.contains(addr) || !addrRange.contains(addr+size))
        panic("SMMU: invalid address on control port %x, packet size %d",
                addr, size);

    // @todo: We need to pay for this and not just zero it out
    pkt->headerDelay = pkt->payloadDelay = 0;

    return pkt->isRead() ? smmu.readControl(pkt) : smmu.writeControl(pkt);
}

AddrRangeList
SMMUControlPort::getAddrRanges() const
{
    AddrRangeList list;
    list.push_back(addrRange);
    return list;
}

SMMUATSMemoryPort::SMMUATSMemoryPort(const std::string &_name,
                                     SMMUv3DeviceInterface &_ifc) :
    QueuedRequestPort(_name, reqQueue, snoopRespQueue),
    ifc(_ifc),
    reqQueue(_ifc, *this),
    snoopRespQueue(_ifc, *this)
{}

bool
SMMUATSMemoryPort::recvTimingResp(PacketPtr pkt)
{
    return ifc.atsRecvTimingResp(pkt);
}

SMMUATSDevicePort::SMMUATSDevicePort(const std::string &_name,
                                   SMMUv3DeviceInterface &_ifc) :
    QueuedResponsePort(_name, respQueue),
    ifc(_ifc),
    respQueue(_ifc, *this)
{}

void
SMMUATSDevicePort::recvFunctional(PacketPtr pkt)
{
    panic("Functional access on ATS port!");
}

Tick
SMMUATSDevicePort::recvAtomic(PacketPtr pkt)
{
    return ifc.atsRecvAtomic(pkt);
}

bool
SMMUATSDevicePort::recvTimingReq(PacketPtr pkt)
{
    return ifc.atsRecvTimingReq(pkt);
}

} // namespace gem5