south_bridge.cc revision 5446 
110915Sandreas.sandberg@arm.com/*
210915Sandreas.sandberg@arm.com * Copyright (c) 2008 The Regents of The University of Michigan
310915Sandreas.sandberg@arm.com * All rights reserved.
410915Sandreas.sandberg@arm.com *
510915Sandreas.sandberg@arm.com * Redistribution and use in source and binary forms, with or without
610915Sandreas.sandberg@arm.com * modification, are permitted provided that the following conditions are
710915Sandreas.sandberg@arm.com * met: redistributions of source code must retain the above copyright
810915Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer;
910915Sandreas.sandberg@arm.com * redistributions in binary form must reproduce the above copyright
1010915Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer in the
1110915Sandreas.sandberg@arm.com * documentation and/or other materials provided with the distribution;
1210915Sandreas.sandberg@arm.com * neither the name of the copyright holders nor the names of its
1310915Sandreas.sandberg@arm.com * contributors may be used to endorse or promote products derived from
1410915Sandreas.sandberg@arm.com * this software without specific prior written permission.
1510915Sandreas.sandberg@arm.com *
1610915Sandreas.sandberg@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1710915Sandreas.sandberg@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1810915Sandreas.sandberg@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1910915Sandreas.sandberg@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
2010915Sandreas.sandberg@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2110915Sandreas.sandberg@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
2210915Sandreas.sandberg@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2310915Sandreas.sandberg@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2410915Sandreas.sandberg@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2510915Sandreas.sandberg@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
2610915Sandreas.sandberg@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2710915Sandreas.sandberg@arm.com *
2810915Sandreas.sandberg@arm.com * Authors: Gabe Black
2910915Sandreas.sandberg@arm.com */
3010915Sandreas.sandberg@arm.com
3110915Sandreas.sandberg@arm.com#include "arch/x86/x86_traits.hh"
3210915Sandreas.sandberg@arm.com#include "base/range.hh"
3310915Sandreas.sandberg@arm.com#include "dev/x86/pc.hh"
3410915Sandreas.sandberg@arm.com#include "dev/x86/south_bridge/south_bridge.hh"
3510915Sandreas.sandberg@arm.com
3610915Sandreas.sandberg@arm.comusing namespace X86ISA;
3710915Sandreas.sandberg@arm.com
3810915Sandreas.sandberg@arm.comvoid
3910915Sandreas.sandberg@arm.comSouthBridge::addDevice(X86ISA::SubDevice & sub)
4010915Sandreas.sandberg@arm.com{
4110915Sandreas.sandberg@arm.com    rangeList.push_back(sub.addrRange);
4210915Sandreas.sandberg@arm.com    rangeMap.insert(sub.addrRange, &sub);
4310915Sandreas.sandberg@arm.com}
4410915Sandreas.sandberg@arm.com
4510915Sandreas.sandberg@arm.comvoid
4610915Sandreas.sandberg@arm.comSouthBridge::addressRanges(AddrRangeList &range_list)
4710915Sandreas.sandberg@arm.com{
4810915Sandreas.sandberg@arm.com    range_list = rangeList;
4910915Sandreas.sandberg@arm.com}
5010915Sandreas.sandberg@arm.com
5110915Sandreas.sandberg@arm.comTick
5210915Sandreas.sandberg@arm.comSouthBridge::read(PacketPtr pkt)
5310915Sandreas.sandberg@arm.com{
5410915Sandreas.sandberg@arm.com    RangeMapIt sub =
5510915Sandreas.sandberg@arm.com        rangeMap.find(RangeSize(pkt->getAddr(), 1));
5610915Sandreas.sandberg@arm.com    assert(sub != rangeMap.end());
5710915Sandreas.sandberg@arm.com    return sub->second->read(pkt);
58}
59
60Tick
61SouthBridge::write(PacketPtr pkt)
62{
63    RangeMapIt sub =
64        rangeMap.find(RangeSize(pkt->getAddr(), 1));
65    assert(sub != rangeMap.end());
66    return sub->second->write(pkt);
67}
68
69SouthBridge::SouthBridge(const Params *p) : PioDevice(p),
70    pic1(0x20, 2, p->pio_latency),
71    pic2(0xA0, 2, p->pio_latency),
72    pit(p->name + ".pit", 0x40, 4, p->pio_latency),
73    cmos(0x70, 2, p->pio_latency),
74    speaker(&pit, 0x61, 1, p->pio_latency)
75{
76    addDevice(pic1);
77    addDevice(pic2);
78    addDevice(pit);
79    addDevice(cmos);
80    addDevice(speaker);
81
82    // Let the platform know where we are
83    PC * pc = dynamic_cast<PC *>(platform);
84    assert(pc);
85    pc->southBridge = this;
86}
87
88SouthBridge *
89SouthBridgeParams::create()
90{
91    return new SouthBridge(this);
92}
93