speaker.cc revision 11793
112854Sgabeblack@google.com/* 212854Sgabeblack@google.com * Copyright (c) 2008 The Regents of The University of Michigan 312854Sgabeblack@google.com * All rights reserved. 412854Sgabeblack@google.com * 512854Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 612854Sgabeblack@google.com * modification, are permitted provided that the following conditions are 712854Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 812854Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 912854Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1012854Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1112854Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1212854Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1312854Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1412854Sgabeblack@google.com * this software without specific prior written permission. 1512854Sgabeblack@google.com * 1612854Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712854Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812854Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912854Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012854Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112854Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212854Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312854Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412854Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512854Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612854Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712854Sgabeblack@google.com * 2812854Sgabeblack@google.com * Authors: Gabe Black 2912854Sgabeblack@google.com */ 3012854Sgabeblack@google.com 3112854Sgabeblack@google.com#include "dev/x86/speaker.hh" 3212854Sgabeblack@google.com 3312854Sgabeblack@google.com#include "base/bitunion.hh" 3412854Sgabeblack@google.com#include "base/trace.hh" 3512854Sgabeblack@google.com#include "debug/PcSpeaker.hh" 3612854Sgabeblack@google.com#include "dev/x86/i8254.hh" 3712854Sgabeblack@google.com#include "mem/packet.hh" 3812854Sgabeblack@google.com#include "mem/packet_access.hh" 3912854Sgabeblack@google.com 4012854Sgabeblack@google.comTick 4112854Sgabeblack@google.comX86ISA::Speaker::read(PacketPtr pkt) 4212854Sgabeblack@google.com{ 4312854Sgabeblack@google.com assert(pkt->getAddr() == pioAddr); 4412854Sgabeblack@google.com assert(pkt->getSize() == 1); 4512854Sgabeblack@google.com controlVal.timer = timer->outputHigh(2) ? 1 : 0; 4612854Sgabeblack@google.com DPRINTF(PcSpeaker, 4712854Sgabeblack@google.com "Reading from speaker device: gate %s, speaker %s, output %s.\n", 4812854Sgabeblack@google.com controlVal.gate ? "on" : "off", 4912854Sgabeblack@google.com controlVal.speaker ? "on" : "off", 5012854Sgabeblack@google.com controlVal.timer ? "on" : "off"); 5112854Sgabeblack@google.com pkt->set((uint8_t)controlVal); 5212854Sgabeblack@google.com pkt->makeAtomicResponse(); 5312854Sgabeblack@google.com return latency; 5412854Sgabeblack@google.com} 5512854Sgabeblack@google.com 5612854Sgabeblack@google.comTick 5712854Sgabeblack@google.comX86ISA::Speaker::write(PacketPtr pkt) 5812854Sgabeblack@google.com{ 5912854Sgabeblack@google.com assert(pkt->getAddr() == pioAddr); 6012854Sgabeblack@google.com assert(pkt->getSize() == 1); 6112854Sgabeblack@google.com SpeakerControl val = pkt->get<uint8_t>(); 6212854Sgabeblack@google.com controlVal.gate = val.gate; 6312854Sgabeblack@google.com //Change the gate value in the timer. 6412854Sgabeblack@google.com if (!val.gate) 6512854Sgabeblack@google.com warn("The gate bit of the pc speaker isn't implemented and " 6612854Sgabeblack@google.com "is always on.\n"); 6712854Sgabeblack@google.com //This would control whether the timer output is hooked up to a physical 6812854Sgabeblack@google.com //speaker. Since M5 can't make noise, it's value doesn't actually do 6912854Sgabeblack@google.com //anything. 7012854Sgabeblack@google.com controlVal.speaker = val.speaker; 7112854Sgabeblack@google.com DPRINTF(PcSpeaker, "Writing to speaker device: gate %s, speaker %s.\n", 7212854Sgabeblack@google.com controlVal.gate ? "on" : "off", controlVal.speaker ? "on" : "off"); 7312854Sgabeblack@google.com pkt->makeAtomicResponse(); 7412854Sgabeblack@google.com return latency; 7512854Sgabeblack@google.com} 7612854Sgabeblack@google.com 7712854Sgabeblack@google.comvoid 7812854Sgabeblack@google.comX86ISA::Speaker::serialize(CheckpointOut &cp) const 7912854Sgabeblack@google.com{ 8012854Sgabeblack@google.com uint8_t controlValData = controlVal.__data; 8112854Sgabeblack@google.com SERIALIZE_SCALAR(controlValData); 8212854Sgabeblack@google.com} 8312854Sgabeblack@google.com 8412854Sgabeblack@google.comvoid 8512854Sgabeblack@google.comX86ISA::Speaker::unserialize(CheckpointIn &cp) 8612854Sgabeblack@google.com{ 8712854Sgabeblack@google.com uint8_t controlValData; 8812854Sgabeblack@google.com UNSERIALIZE_SCALAR(controlValData); 8912854Sgabeblack@google.com controlVal.__data = controlValData; 9012854Sgabeblack@google.com} 9112854Sgabeblack@google.com 9212854Sgabeblack@google.comX86ISA::Speaker * 9312854Sgabeblack@google.comPcSpeakerParams::create() 9413322Sgabeblack@google.com{ 9512854Sgabeblack@google.com return new X86ISA::Speaker(this); 9612854Sgabeblack@google.com} 9712854Sgabeblack@google.com