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# Copyright (c) 2012 ARM Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
# 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
# unmodified and in its entirety in all distributions of the software,
# modified or unmodified, in source code or in binary form.
#
# Copyright (c) 2008 The Regents of The University of Michigan
# All rights reserved.
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# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
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# redistributions in binary form must reproduce the above copyright
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# neither the name of the copyright holders nor the names of its
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# this software without specific prior written permission.
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from m5.defines import buildEnv
from m5.params import *
from m5.proxy import *
from m5.objects.BaseInterrupts import BaseInterrupts
from m5.objects.ClockDomain import DerivedClockDomain
from m5.SimObject import SimObject
class X86LocalApic(BaseInterrupts):
type = 'X86LocalApic'
cxx_class = 'X86ISA::Interrupts'
cxx_header = 'arch/x86/interrupts.hh'
int_requestor = RequestPort("Port for sending interrupt messages")
int_master = DeprecatedParam(int_requestor,
'`int_master` is now called `int_requestor`')
int_responder = ResponsePort("Port for receiving interrupt messages")
int_slave = DeprecatedParam(int_responder,
'`int_slave` is now called `int_responder`')
int_latency = Param.Latency('1ns', \
"Latency for an interrupt to propagate through this device.")
pio = ResponsePort("Programmed I/O port")
system = Param.System(Parent.any, "System this device is part of")
pio_latency = Param.Latency('100ns', 'Programmed IO latency')
# The clock rate for the local APIC timer is supposed to be the "bus clock"
# which we assume is 1/16th the rate of the CPU clock. I don't think this
# is a hard rule, but seems to be true in practice. This can be overriden
# in configs that use it.
clk_domain = Param.DerivedClockDomain(
DerivedClockDomain(clk_domain=Parent.clk_domain, clk_divider=16),
"The clock for the local APIC. Should not be modified.")