SouthBridge.py revision 5833:5a07c4e3249b 
1# Copyright (c) 2008 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Gabe Black
28
29from m5.params import *
30from m5.proxy import *
31from Cmos import Cmos
32from I8042 import I8042
33from I82094AA import I82094AA
34from I8237 import I8237
35from I8254 import I8254
36from I8259 import I8259
37from Ide import IdeController
38from PcSpeaker import PcSpeaker
39from X86IntPin import X86IntLine
40from m5.SimObject import SimObject
41
42def x86IOAddress(port):
43    IO_address_space_base = 0x8000000000000000
44    return IO_address_space_base + port;
45
46class SouthBridge(SimObject):
47    type = 'SouthBridge'
48    pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks")
49    platform = Param.Platform(Parent.any, "Platform this device is part of")
50
51    _pic1 = I8259(pio_addr=x86IOAddress(0x20), mode='I8259Master')
52    _pic2 = I8259(pio_addr=x86IOAddress(0xA0), mode='I8259Slave')
53    _cmos = Cmos(pio_addr=x86IOAddress(0x70))
54    _dma1 = I8237(pio_addr=x86IOAddress(0x0))
55    _keyboard = I8042(data_port=x86IOAddress(0x60), \
56            command_port=x86IOAddress(0x64))
57    _pit = I8254(pio_addr=x86IOAddress(0x40))
58    _speaker = PcSpeaker(pio_addr=x86IOAddress(0x61))
59    _io_apic = I82094AA(pio_addr=0xFEC00000)
60    # This is to make sure the interrupt lines are instantiated. Don't use
61    # it for anything directly.
62    int_lines = VectorParam.X86IntLine([], "Interrupt lines")
63
64    pic1 = Param.I8259(_pic1, "Master PIC")
65    pic2 = Param.I8259(_pic2, "Slave PIC")
66    cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device")
67    dma1 = Param.I8237(_dma1, "The first dma controller")
68    keyboard = Param.I8042(_keyboard, "The keyboard controller")
69    pit = Param.I8254(_pit, "Programmable interval timer")
70    speaker = Param.PcSpeaker(_speaker, "PC speaker")
71    io_apic = Param.I82094AA(_io_apic, "I/O APIC")
72
73    def connectPins(self, source, sink):
74        self.int_lines.append(X86IntLine(source=source, sink=sink))
75
76    # IDE controller
77    ide = IdeController(disks=[], pci_func=0, pci_dev=4, pci_bus=0)
78    ide.BAR0 = 0x1f0
79    ide.BAR0LegacyIO = True
80    ide.BAR1 = 0x3f4
81    ide.BAR1Size = '3B'
82    ide.BAR1LegacyIO = True
83    ide.BAR2 = 0x170
84    ide.BAR2LegacyIO = True
85    ide.BAR3 = 0x374
86    ide.BAR3Size = '3B'
87    ide.BAR3LegacyIO = True
88    ide.BAR4 = 1
89    ide.Command = 1
90
91    def attachIO(self, bus):
92        # Route interupt signals
93        self.connectPins(self.pic1.output, self.io_apic.pin(0))
94        self.connectPins(self.pic2.output, self.pic1.pin(2))
95        self.connectPins(self.cmos.int_pin, self.pic2.pin(0))
96        self.connectPins(self.pit.int_pin, self.pic1.pin(0))
97        self.connectPins(self.pit.int_pin, self.io_apic.pin(2))
98#        self.connectPins(self.keyboard.keyboard_int_pin,
99#                         self.pic1.pin(1))
100        self.connectPins(self.keyboard.keyboard_int_pin,
101                         self.io_apic.pin(1))
102#        self.connectPins(self.keyboard.mouse_int_pin,
103#                         self.pic2.pin(4))
104        self.connectPins(self.keyboard.mouse_int_pin,
105                         self.io_apic.pin(12))
106        # Tell the devices about each other
107        self.pic1.slave = self.pic2
108        self.speaker.i8254 = self.pit
109        self.io_apic.external_int_pic = self.pic1
110        # Connect to the bus
111        self.cmos.pio = bus.port
112        self.dma1.pio = bus.port
113        self.ide.pio = bus.port
114        self.keyboard.pio = bus.port
115        self.pic1.pio = bus.port
116        self.pic2.pio = bus.port
117        self.pit.pio = bus.port
118        self.speaker.pio = bus.port
119        self.io_apic.pio = bus.port
120        self.io_apic.int_port = bus.port
121