70e99e0b91
This patch removes the overloading of the parameter, which seems both redundant, and possibly incorrect. The PciConfigAll now also uses a Param.Latency rather than a Param.Tick. For backwards compatibility it still sets the pio_latency to 1 tick. All the comments have also been updated to not state that it is in simticks when it is not necessarily the case.
117 lines
4.8 KiB
Python
117 lines
4.8 KiB
Python
# Copyright (c) 2008 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Gabe Black
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from m5.params import *
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from m5.proxy import *
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from Cmos import Cmos
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from I8042 import I8042
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from I82094AA import I82094AA
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from I8237 import I8237
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from I8254 import I8254
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from I8259 import I8259
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from Ide import IdeController
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from PcSpeaker import PcSpeaker
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from X86IntPin import X86IntLine
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from m5.SimObject import SimObject
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def x86IOAddress(port):
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IO_address_space_base = 0x8000000000000000
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return IO_address_space_base + port;
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class SouthBridge(SimObject):
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type = 'SouthBridge'
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platform = Param.Platform(Parent.any, "Platform this device is part of")
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_pic1 = I8259(pio_addr=x86IOAddress(0x20), mode='I8259Master')
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_pic2 = I8259(pio_addr=x86IOAddress(0xA0), mode='I8259Slave')
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_cmos = Cmos(pio_addr=x86IOAddress(0x70))
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_dma1 = I8237(pio_addr=x86IOAddress(0x0))
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_keyboard = I8042(data_port=x86IOAddress(0x60), \
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command_port=x86IOAddress(0x64))
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_pit = I8254(pio_addr=x86IOAddress(0x40))
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_speaker = PcSpeaker(pio_addr=x86IOAddress(0x61))
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_io_apic = I82094AA(pio_addr=0xFEC00000)
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pic1 = Param.I8259(_pic1, "Master PIC")
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pic2 = Param.I8259(_pic2, "Slave PIC")
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cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device")
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dma1 = Param.I8237(_dma1, "The first dma controller")
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keyboard = Param.I8042(_keyboard, "The keyboard controller")
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pit = Param.I8254(_pit, "Programmable interval timer")
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speaker = Param.PcSpeaker(_speaker, "PC speaker")
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io_apic = Param.I82094AA(_io_apic, "I/O APIC")
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# IDE controller
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ide = IdeController(disks=[], pci_func=0, pci_dev=4, pci_bus=0)
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ide.BAR0 = 0x1f0
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ide.BAR0LegacyIO = True
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ide.BAR1 = 0x3f4
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ide.BAR1Size = '3B'
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ide.BAR1LegacyIO = True
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ide.BAR2 = 0x170
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ide.BAR2LegacyIO = True
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ide.BAR3 = 0x374
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ide.BAR3Size = '3B'
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ide.BAR3LegacyIO = True
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ide.BAR4 = 1
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ide.Command = 0
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ide.ProgIF = 0x80
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ide.InterruptLine = 14
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ide.InterruptPin = 1
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def attachIO(self, bus, dma_ports):
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# Route interupt signals
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self.int_lines = \
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[X86IntLine(source=self.pic1.output, sink=self.io_apic.pin(0)),
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X86IntLine(source=self.pic2.output, sink=self.pic1.pin(2)),
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X86IntLine(source=self.cmos.int_pin, sink=self.pic2.pin(0)),
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X86IntLine(source=self.pit.int_pin, sink=self.pic1.pin(0)),
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X86IntLine(source=self.pit.int_pin, sink=self.io_apic.pin(2)),
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X86IntLine(source=self.keyboard.keyboard_int_pin,
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sink=self.io_apic.pin(1)),
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X86IntLine(source=self.keyboard.mouse_int_pin,
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sink=self.io_apic.pin(12))]
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# Tell the devices about each other
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self.pic1.slave = self.pic2
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self.speaker.i8254 = self.pit
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self.io_apic.external_int_pic = self.pic1
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# Connect to the bus
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self.cmos.pio = bus.master
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self.dma1.pio = bus.master
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self.ide.pio = bus.master
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self.ide.config = bus.master
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if dma_ports.count(self.ide.dma) == 0:
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self.ide.dma = bus.slave
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self.keyboard.pio = bus.master
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self.pic1.pio = bus.master
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self.pic2.pio = bus.master
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self.pit.pio = bus.master
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self.speaker.pio = bus.master
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self.io_apic.pio = bus.master
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self.io_apic.int_master = bus.slave
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