src/arch/arm/fastmodel/FastModel.py

# Copyright 2019 Google, Inc.
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from m5.params import *
from m5.proxy import *

from m5.objects.SystemC import SystemC_ScModule
from m5.objects.Tlm import TlmInitiatorSocket, TlmTargetSocket


def AMBA_TARGET_ROLE(width):
    return "AMBA TARGET %d" % width


def AMBA_INITIATOR_ROLE(width):
    return "AMBA INITIATOR %d" % width


def SC_REQUEST_PORT_ROLE(port_type):
    return f"SC REQUEST PORT for {port_type}"


def SC_RESPONSE_PORT_ROLE(port_type):
    return f"SC RESPONSE PORT for {port_type}"


class AmbaTargetSocket(Port):
    def __init__(self, width, desc):
        my_role = AMBA_INITIATOR_ROLE(width)
        peer_role = AMBA_TARGET_ROLE(width)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc)


class VectorAmbaTargetSocket(VectorPort):
    def __init__(self, width, desc):
        my_role = AMBA_INITIATOR_ROLE(width)
        peer_role = AMBA_TARGET_ROLE(width)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc)


class AmbaInitiatorSocket(Port):
    def __init__(self, width, desc):
        my_role = AMBA_TARGET_ROLE(width)
        peer_role = AMBA_INITIATOR_ROLE(width)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc, is_source=True)


class VectorAmbaInitiatorSocket(VectorPort):
    def __init__(self, width, desc):
        my_role = AMBA_TARGET_ROLE(width)
        peer_role = AMBA_INITIATOR_ROLE(width)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc, is_source=True)


class ScRequestPort(Port):
    def __init__(self, desc, port_type):
        my_role = SC_REQUEST_PORT_ROLE(port_type)
        peer_role = SC_RESPONSE_PORT_ROLE(port_type)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc)


class ScResponsePort(Port):
    def __init__(self, desc, port_type):
        my_role = SC_RESPONSE_PORT_ROLE(port_type)
        peer_role = SC_REQUEST_PORT_ROLE(port_type)
        Port.compat(my_role, peer_role)

        super().__init__(my_role, desc)


class AmbaToTlmBridge64(SystemC_ScModule):
    type = "AmbaToTlmBridge64"
    cxx_class = "gem5::fastmodel::AmbaToTlmBridge64"
    cxx_header = "arch/arm/fastmodel/amba_to_tlm_bridge.hh"

    amba = AmbaTargetSocket(64, "AMBA PV target socket")
    tlm = TlmInitiatorSocket(64, "TLM initiator socket")

    set_stream_id = Param.Bool(
        False, "Set this true to forward stream ID to gem5 world"
    )


class AmbaFromTlmBridge64(SystemC_ScModule):
    type = "AmbaFromTlmBridge64"
    cxx_class = "gem5::fastmodel::AmbaFromTlmBridge64"
    cxx_header = "arch/arm/fastmodel/amba_from_tlm_bridge.hh"

    tlm = TlmTargetSocket(64, "TLM target socket")
    amba = AmbaInitiatorSocket(64, "AMBA PV initiator socket")