X86LocalApic.py (13665:9c7fe3811b88) X86LocalApic.py (14145:066ba9040e5e)
1# Copyright (c) 2012 ARM Limited
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license

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38#
39# Authors: Gabe Black
40
41from m5.defines import buildEnv
42from m5.params import *
43from m5.proxy import *
44
45from m5.objects.Device import BasicPioDevice
1# Copyright (c) 2012 ARM Limited
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license

--- 29 unchanged lines hidden (view full) ---

38#
39# Authors: Gabe Black
40
41from m5.defines import buildEnv
42from m5.params import *
43from m5.proxy import *
44
45from m5.objects.Device import BasicPioDevice
46from m5.objects.ClockDomain import DerivedClockDomain
46
47class X86LocalApic(BasicPioDevice):
48 type = 'X86LocalApic'
49 cxx_class = 'X86ISA::Interrupts'
50 cxx_header = 'arch/x86/interrupts.hh'
51 int_master = MasterPort("Port for sending interrupt messages")
52 int_slave = SlavePort("Port for receiving interrupt messages")
53 int_latency = Param.Latency('1ns', \
54 "Latency for an interrupt to propagate through this device.")
47
48class X86LocalApic(BasicPioDevice):
49 type = 'X86LocalApic'
50 cxx_class = 'X86ISA::Interrupts'
51 cxx_header = 'arch/x86/interrupts.hh'
52 int_master = MasterPort("Port for sending interrupt messages")
53 int_slave = SlavePort("Port for receiving interrupt messages")
54 int_latency = Param.Latency('1ns', \
55 "Latency for an interrupt to propagate through this device.")
56
57 # pio_addr isn't used by the local APIC model since it's address is
58 # calculated dynamically using the initial ID of the CPU it's attached to,
59 # but it needs to be set to something to make the BasicPioDevice happy.
60 pio_addr = 0x2000000000000000
61
62 # The clock rate for the local APIC timer is supposed to be the "bus clock"
63 # which we assume is 1/16th the rate of the CPU clock. I don't think this
64 # is a hard rule, but seems to be true in practice. This can be overriden
65 # in configs that use it.
66 clk_domain = DerivedClockDomain(
67 clk_domain=Parent.clk_domain, clk_divider=16)