pc.cc revision 5842:1349786dd9a7 
1/*
2 * Copyright (c) 2008 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31/** @file
32 * Implementation of PC platform.
33 */
34
35#include <deque>
36#include <string>
37#include <vector>
38
39#include "arch/x86/intmessage.hh"
40#include "arch/x86/x86_traits.hh"
41#include "cpu/intr_control.hh"
42#include "dev/terminal.hh"
43#include "dev/x86/i82094aa.hh"
44#include "dev/x86/i8254.hh"
45#include "dev/x86/i8259.hh"
46#include "dev/x86/pc.hh"
47#include "dev/x86/south_bridge.hh"
48#include "sim/system.hh"
49
50using namespace std;
51using namespace TheISA;
52
53Pc::Pc(const Params *p)
54    : Platform(p), system(p->system)
55{
56    southBridge = NULL;
57    // set the back pointer from the system to myself
58    system->platform = this;
59}
60
61void
62Pc::init()
63{
64    assert(southBridge);
65
66    /*
67     * Initialize the timer.
68     */
69    I8254 & timer = *southBridge->pit;
70    //Timer 0, mode 2, no bcd, 16 bit count
71    timer.writeControl(0x34);
72    //Timer 0, latch command
73    timer.writeControl(0x00);
74    //Write a 16 bit count of 0
75    timer.writeCounter(0, 0);
76    timer.writeCounter(0, 0);
77
78    /*
79     * Initialize the I/O APIC.
80     */
81    I82094AA & ioApic = *southBridge->ioApic;
82    I82094AA::RedirTableEntry entry = 0;
83    entry.deliveryMode = DeliveryMode::ExtInt;
84    entry.vector = 0x20;
85    ioApic.writeReg(0x10, entry.bottomDW);
86    ioApic.writeReg(0x11, entry.topDW);
87    entry.deliveryMode = DeliveryMode::Fixed;
88    entry.vector = 0x24;
89    ioApic.writeReg(0x18, entry.bottomDW);
90    ioApic.writeReg(0x19, entry.topDW);
91    entry.mask = 1;
92    entry.vector = 0x21;
93    ioApic.writeReg(0x12, entry.bottomDW);
94    ioApic.writeReg(0x13, entry.topDW);
95    entry.vector = 0x20;
96    ioApic.writeReg(0x14, entry.bottomDW);
97    ioApic.writeReg(0x15, entry.topDW);
98    entry.vector = 0x28;
99    ioApic.writeReg(0x20, entry.bottomDW);
100    ioApic.writeReg(0x21, entry.topDW);
101    entry.vector = 0x2C;
102    ioApic.writeReg(0x28, entry.bottomDW);
103    ioApic.writeReg(0x29, entry.topDW);
104}
105
106Tick
107Pc::intrFrequency()
108{
109    panic("Need implementation\n");
110    M5_DUMMY_RETURN
111}
112
113void
114Pc::postConsoleInt()
115{
116    southBridge->ioApic->signalInterrupt(4);
117    southBridge->pic1->signalInterrupt(4);
118}
119
120void
121Pc::clearConsoleInt()
122{
123    warn_once("Don't know what interrupt to clear for console.\n");
124    //panic("Need implementation\n");
125}
126
127void
128Pc::postPciInt(int line)
129{
130    southBridge->ioApic->signalInterrupt(line);
131}
132
133void
134Pc::clearPciInt(int line)
135{
136    warn_once("Tried to clear PCI interrupt %d\n", line);
137}
138
139Addr
140Pc::pciToDma(Addr pciAddr) const
141{
142    panic("Need implementation\n");
143    M5_DUMMY_RETURN
144}
145
146Addr
147Pc::calcPciConfigAddr(int bus, int dev, int func)
148{
149    assert(func < 8);
150    assert(dev < 32);
151    assert(bus == 0);
152    return (PhysAddrPrefixPciConfig | (func << 8) | (dev << 11));
153}
154
155Addr
156Pc::calcPciIOAddr(Addr addr)
157{
158    return PhysAddrPrefixIO + addr;
159}
160
161Addr
162Pc::calcPciMemAddr(Addr addr)
163{
164    return addr;
165}
166
167Pc *
168PcParams::create()
169{
170    return new Pc(this);
171}
172