mouse.cc revision 12653
1/* 2 * Copyright (c) 2017-2018 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2008 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Gabe Black 41 * Andreas Sandberg 42 */ 43 44#include "dev/ps2/mouse.hh" 45 46#include "base/logging.hh" 47#include "debug/PS2.hh" 48#include "params/PS2Mouse.hh" 49 50const uint8_t PS2Mouse::ID[] = {0x00}; 51const uint8_t BatSuccessful = 0xaa; 52 53PS2Mouse::PS2Mouse(const PS2MouseParams *p) 54 : PS2Device(p), 55 lastCommand(NoCommand), 56 status(0), resolution(4), sampleRate(100) 57{ 58} 59 60void 61PS2Mouse::recv(uint8_t data) 62{ 63 if (lastCommand != NoCommand) { 64 switch(lastCommand) { 65 case SetResolution: 66 DPRINTF(PS2, "Mouse resolution set to %d.\n", data); 67 resolution = data; 68 sendAck(); 69 lastCommand = NoCommand; 70 break; 71 case SampleRate: 72 DPRINTF(PS2, "Mouse sample rate %d samples " 73 "per second.\n", data); 74 sampleRate = data; 75 sendAck(); 76 lastCommand = NoCommand; 77 break; 78 default: 79 panic("Not expecting data for a mouse command.\n"); 80 } 81 return; 82 } 83 switch (data) { 84 case Scale1to1: 85 DPRINTF(PS2, "Setting mouse scale to 1:1.\n"); 86 status.twoToOne = 0; 87 sendAck(); 88 break; 89 case Scale2to1: 90 DPRINTF(PS2, "Setting mouse scale to 2:1.\n"); 91 status.twoToOne = 1; 92 sendAck(); 93 break; 94 case SetResolution: 95 DPRINTF(PS2, "Setting mouse resolution.\n"); 96 lastCommand = SetResolution; 97 sendAck(); 98 break; 99 case GetStatus: 100 DPRINTF(PS2, "Getting mouse status.\n"); 101 sendAck(); 102 send((uint8_t *)&(status), 1); 103 send(&resolution, sizeof(resolution)); 104 send(&sampleRate, sizeof(sampleRate)); 105 break; 106 case ReadData: 107 panic("Reading mouse data unimplemented.\n"); 108 case ResetWrapMode: 109 panic("Resetting mouse wrap mode unimplemented.\n"); 110 case WrapMode: 111 panic("Setting mouse wrap mode unimplemented.\n"); 112 case RemoteMode: 113 panic("Setting mouse remote mode unimplemented.\n"); 114 case ReadID: 115 DPRINTF(PS2, "Mouse ID requested.\n"); 116 sendAck(); 117 send(ID, sizeof(ID)); 118 break; 119 case SampleRate: 120 DPRINTF(PS2, "Setting mouse sample rate.\n"); 121 lastCommand = SampleRate; 122 sendAck(); 123 break; 124 case DisableReporting: 125 DPRINTF(PS2, "Disabling data reporting.\n"); 126 status.enabled = 0; 127 sendAck(); 128 break; 129 case EnableReporting: 130 DPRINTF(PS2, "Enabling data reporting.\n"); 131 status.enabled = 1; 132 sendAck(); 133 break; 134 case DefaultsAndDisable: 135 DPRINTF(PS2, "Disabling and resetting mouse.\n"); 136 sampleRate = 100; 137 resolution = 4; 138 status.twoToOne = 0; 139 status.enabled = 0; 140 sendAck(); 141 break; 142 case Resend: 143 panic("Mouse resend unimplemented.\n"); 144 case Reset: 145 DPRINTF(PS2, "Resetting the mouse.\n"); 146 sampleRate = 100; 147 resolution = 4; 148 status.twoToOne = 0; 149 status.enabled = 0; 150 sendAck(); 151 send(&BatSuccessful, sizeof(BatSuccessful)); 152 send(ID, sizeof(ID)); 153 break; 154 default: 155 warn("Unknown mouse command %#02x.\n", data); 156 send(Resend); 157 break; 158 } 159} 160 161void 162PS2Mouse::serialize(CheckpointOut &cp) const 163{ 164 PS2Device::serialize(cp); 165 166 SERIALIZE_SCALAR(lastCommand); 167 168 SERIALIZE_SCALAR(status); 169 SERIALIZE_SCALAR(resolution); 170 SERIALIZE_SCALAR(sampleRate); 171} 172 173void 174PS2Mouse::unserialize(CheckpointIn &cp) 175{ 176 PS2Device::unserialize(cp); 177 178 UNSERIALIZE_SCALAR(lastCommand); 179 180 UNSERIALIZE_SCALAR(status); 181 UNSERIALIZE_SCALAR(resolution); 182 UNSERIALIZE_SCALAR(sampleRate); 183} 184 185PS2Mouse * 186PS2MouseParams::create() 187{ 188 return new PS2Mouse(this); 189} 190