malta_io.cc revision 11793
15222Sksewell@umich.edu/* 25222Sksewell@umich.edu * Copyright (c) 2004-2005 The Regents of The University of Michigan 35222Sksewell@umich.edu * All rights reserved. 45222Sksewell@umich.edu * 55222Sksewell@umich.edu * Redistribution and use in source and binary forms, with or without 65222Sksewell@umich.edu * modification, are permitted provided that the following conditions are 75222Sksewell@umich.edu * met: redistributions of source code must retain the above copyright 85222Sksewell@umich.edu * notice, this list of conditions and the following disclaimer; 95222Sksewell@umich.edu * redistributions in binary form must reproduce the above copyright 105222Sksewell@umich.edu * notice, this list of conditions and the following disclaimer in the 115222Sksewell@umich.edu * documentation and/or other materials provided with the distribution; 125222Sksewell@umich.edu * neither the name of the copyright holders nor the names of its 135222Sksewell@umich.edu * contributors may be used to endorse or promote products derived from 145222Sksewell@umich.edu * this software without specific prior written permission. 155222Sksewell@umich.edu * 165222Sksewell@umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 175222Sksewell@umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 185222Sksewell@umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 195222Sksewell@umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 205222Sksewell@umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 215222Sksewell@umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 225222Sksewell@umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235222Sksewell@umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245222Sksewell@umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255222Sksewell@umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265222Sksewell@umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275222Sksewell@umich.edu * 285222Sksewell@umich.edu * Authors: Ali Saidi 295222Sksewell@umich.edu * Andrew Schultz 305222Sksewell@umich.edu * Miguel Serrano 315222Sksewell@umich.edu */ 325222Sksewell@umich.edu 335222Sksewell@umich.edu/** @file 345222Sksewell@umich.edu * Malta I/O including PIC, PIT, RTC, DMA 355222Sksewell@umich.edu */ 365222Sksewell@umich.edu 3711793Sbrandon.potter@amd.com#include "dev/mips/malta_io.hh" 3811793Sbrandon.potter@amd.com 395222Sksewell@umich.edu#include <sys/time.h> 405222Sksewell@umich.edu 415222Sksewell@umich.edu#include <deque> 425222Sksewell@umich.edu#include <string> 435222Sksewell@umich.edu#include <vector> 445222Sksewell@umich.edu 456379Sgblack@eecs.umich.edu#include "base/time.hh" 465222Sksewell@umich.edu#include "base/trace.hh" 476658Snate@binkert.org#include "config/the_isa.hh" 488739Sgblack@eecs.umich.edu#include "debug/Malta.hh" 498229Snate@binkert.org#include "dev/mips/malta.hh" 505222Sksewell@umich.edu#include "dev/mips/malta_cchip.hh" 515222Sksewell@umich.edu#include "dev/mips/maltareg.h" 528229Snate@binkert.org#include "dev/rtcreg.h" 535222Sksewell@umich.edu#include "mem/packet.hh" 545222Sksewell@umich.edu#include "mem/packet_access.hh" 555222Sksewell@umich.edu#include "mem/port.hh" 565222Sksewell@umich.edu#include "params/MaltaIO.hh" 575222Sksewell@umich.edu#include "sim/system.hh" 585222Sksewell@umich.edu 595222Sksewell@umich.eduusing namespace std; 605222Sksewell@umich.eduusing namespace TheISA; 615222Sksewell@umich.edu 626379Sgblack@eecs.umich.eduMaltaIO::RTC::RTC(const string &name, const MaltaIOParams *p) 636379Sgblack@eecs.umich.edu : MC146818(p->malta, name, p->time, p->year_is_bcd, p->frequency), 646379Sgblack@eecs.umich.edu malta(p->malta) 655222Sksewell@umich.edu{ 665222Sksewell@umich.edu} 675222Sksewell@umich.edu 686379Sgblack@eecs.umich.eduMaltaIO::MaltaIO(const Params *p) 699808Sstever@gmail.com : BasicPioDevice(p, 0x100), malta(p->malta), 706379Sgblack@eecs.umich.edu pitimer(this, p->name + "pitimer"), rtc(p->name + ".rtc", p) 715222Sksewell@umich.edu{ 725222Sksewell@umich.edu // set the back pointer from malta to myself 735222Sksewell@umich.edu malta->io = this; 745222Sksewell@umich.edu 755222Sksewell@umich.edu timerData = 0; 765222Sksewell@umich.edu picr = 0; 775222Sksewell@umich.edu picInterrupting = false; 785222Sksewell@umich.edu} 795222Sksewell@umich.edu 805222Sksewell@umich.eduTick 815222Sksewell@umich.eduMaltaIO::frequency() const 825222Sksewell@umich.edu{ 837064Snate@binkert.org return SimClock::Frequency / params()->frequency; 845222Sksewell@umich.edu} 855222Sksewell@umich.edu 865222Sksewell@umich.eduTick 875222Sksewell@umich.eduMaltaIO::read(PacketPtr pkt) 885222Sksewell@umich.edu{ 896379Sgblack@eecs.umich.edu panic("MaltaIO::read(...) not implemented inside malta_io.cc"); 905222Sksewell@umich.edu return pioDelay; 915222Sksewell@umich.edu} 925222Sksewell@umich.edu 935222Sksewell@umich.eduTick 945222Sksewell@umich.eduMaltaIO::write(PacketPtr pkt) 955222Sksewell@umich.edu{ 966379Sgblack@eecs.umich.edu panic("MaltaIO::write(...) not implemented inside malta_io.cc"); 975222Sksewell@umich.edu return pioDelay; 985222Sksewell@umich.edu} 995222Sksewell@umich.edu 1005222Sksewell@umich.eduvoid 1015222Sksewell@umich.eduMaltaIO::postIntr(uint8_t interrupt) 1025222Sksewell@umich.edu{ 1035222Sksewell@umich.edu malta->cchip->postIntr(interrupt); 1045222Sksewell@umich.edu DPRINTF(Malta, "posting pic interrupt to cchip\n"); 1055222Sksewell@umich.edu} 1065222Sksewell@umich.edu 1075222Sksewell@umich.eduvoid 1085222Sksewell@umich.eduMaltaIO::clearIntr(uint8_t interrupt) 1095222Sksewell@umich.edu{ 1105222Sksewell@umich.edu malta->cchip->clearIntr(interrupt); 1116379Sgblack@eecs.umich.edu DPRINTF(Malta, "clear pic interrupt to cchip\n"); 1125222Sksewell@umich.edu} 1135222Sksewell@umich.edu 1145222Sksewell@umich.eduvoid 11510905Sandreas.sandberg@arm.comMaltaIO::serialize(CheckpointOut &cp) const 1165222Sksewell@umich.edu{ 1175222Sksewell@umich.edu SERIALIZE_SCALAR(timerData); 1185222Sksewell@umich.edu SERIALIZE_SCALAR(mask1); 1195222Sksewell@umich.edu SERIALIZE_SCALAR(mask2); 1205222Sksewell@umich.edu SERIALIZE_SCALAR(mode1); 1215222Sksewell@umich.edu SERIALIZE_SCALAR(mode2); 1225222Sksewell@umich.edu SERIALIZE_SCALAR(picr); 1235222Sksewell@umich.edu SERIALIZE_SCALAR(picInterrupting); 1245222Sksewell@umich.edu 1255222Sksewell@umich.edu // Serialize the timers 12610905Sandreas.sandberg@arm.com pitimer.serialize("pitimer", cp); 12710905Sandreas.sandberg@arm.com rtc.serialize("rtc", cp); 1285222Sksewell@umich.edu} 1295222Sksewell@umich.edu 1305222Sksewell@umich.eduvoid 13110905Sandreas.sandberg@arm.comMaltaIO::unserialize(CheckpointIn &cp) 1325222Sksewell@umich.edu{ 1335222Sksewell@umich.edu UNSERIALIZE_SCALAR(timerData); 1345222Sksewell@umich.edu UNSERIALIZE_SCALAR(mask1); 1355222Sksewell@umich.edu UNSERIALIZE_SCALAR(mask2); 1365222Sksewell@umich.edu UNSERIALIZE_SCALAR(mode1); 1375222Sksewell@umich.edu UNSERIALIZE_SCALAR(mode2); 1385222Sksewell@umich.edu UNSERIALIZE_SCALAR(picr); 1395222Sksewell@umich.edu UNSERIALIZE_SCALAR(picInterrupting); 1405222Sksewell@umich.edu 1415222Sksewell@umich.edu // Unserialize the timers 14210905Sandreas.sandberg@arm.com pitimer.unserialize("pitimer", cp); 14310905Sandreas.sandberg@arm.com rtc.unserialize("rtc", cp); 1445222Sksewell@umich.edu} 1455222Sksewell@umich.edu 14610631Scdirik@micron.comvoid 14710631Scdirik@micron.comMaltaIO::startup() 14810631Scdirik@micron.com{ 14910631Scdirik@micron.com rtc.startup(); 15010642Scdirik@micron.com pitimer.startup(); 15110631Scdirik@micron.com} 15210631Scdirik@micron.com 1535222Sksewell@umich.eduMaltaIO * 1545222Sksewell@umich.eduMaltaIOParams::create() 1555222Sksewell@umich.edu{ 1565222Sksewell@umich.edu return new MaltaIO(this); 1575222Sksewell@umich.edu} 158