speaker.hh revision 5445
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#ifndef __DEV_X86_SOUTH_BRIDGE_SPEAKER_HH__ 32#define __DEV_X86_SOUTH_BRIDGE_SPEAKER_HH__ 33 34#include "arch/x86/x86_traits.hh" 35#include "base/range.hh" 36#include "dev/x86/south_bridge/sub_device.hh" 37 38namespace X86ISA 39{ 40 41class I8254; 42 43class Speaker : public SubDevice 44{ 45 protected: 46 BitUnion8(SpeakerControl) 47 Bitfield<0> gate; 48 Bitfield<1> speaker; 49 Bitfield<5> timer; 50 EndBitUnion(SpeakerControl) 51 52 SpeakerControl controlVal; 53 54 I8254 * timer; 55 56 public: 57 58 Speaker(I8254 * _timer) : timer(_timer) 59 {} 60 Speaker(I8254 * _timer, Tick _latency) : 61 SubDevice(_latency), timer(_timer) 62 {} 63 Speaker(I8254 * _timer, Addr start, Addr size, Tick _latency) : 64 SubDevice(start, size, _latency), timer(_timer) 65 {} 66 67 Tick read(PacketPtr pkt); 68 69 Tick write(PacketPtr pkt); 70}; 71 72}; // namespace X86ISA 73 74#endif //__DEV_X86_SOUTH_BRIDGE_SPEAKER_HH__ 75