1/* 2 * Copyright (c) 2010, 2017 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) 2005 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: Ali Saidi 41 * William Wang 42 */ 43 44#include "dev/arm/kmi.hh" 45 46#include "base/trace.hh" 47#include "base/vnc/vncinput.hh" 48#include "debug/Pl050.hh" 49#include "dev/arm/amba_device.hh" 50#include "dev/ps2.hh" 51#include "mem/packet.hh" 52#include "mem/packet_access.hh" 53 54Pl050::Pl050(const Params *p) 55 : AmbaIntDevice(p, 0xfff), control(0), status(0x43), clkdiv(0), 56 rawInterrupts(0), ackNext(false), shiftDown(false), 57 vnc(p->vnc), driverInitialized(false), 58 intEvent([this]{ generateInterrupt(); }, name()) 59{ 60 if (vnc) { 61 if (!p->is_mouse) 62 vnc->setKeyboard(this); 63 else 64 vnc->setMouse(this); 65 } 66} 67 68Tick 69Pl050::read(PacketPtr pkt) 70{ 71 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 72 73 Addr daddr = pkt->getAddr() - pioAddr; 74 75 uint32_t data = 0; 76 77 switch (daddr) { 78 case kmiCr: 79 DPRINTF(Pl050, "Read Commmand: %#x\n", (uint32_t)control); 80 data = control; 81 break; 82 case kmiStat: 83 if (rxQueue.empty()) 84 status.rxfull = 0; 85 else 86 status.rxfull = 1; 87 88 DPRINTF(Pl050, "Read Status: %#x\n", (uint32_t)status); 89 data = status; 90 break; 91 case kmiData: 92 if (rxQueue.empty()) { 93 data = 0; 94 } else { 95 data = rxQueue.front(); 96 rxQueue.pop_front(); 97 } 98 DPRINTF(Pl050, "Read Data: %#x\n", (uint32_t)data); 99 updateIntStatus(); 100 break; 101 case kmiClkDiv: 102 data = clkdiv; 103 break; 104 case kmiISR: 105 data = getInterrupt(); 106 DPRINTF(Pl050, "Read Interrupts: %#x\n", getInterrupt()); 107 break; 108 default: 109 if (readId(pkt, ambaId, pioAddr)) { 110 // Hack for variable size accesses 111 data = pkt->get<uint32_t>(); 112 break; 113 } 114 115 warn("Tried to read PL050 at offset %#x that doesn't exist\n", daddr); 116 break; 117 } 118 119 switch(pkt->getSize()) { 120 case 1: 121 pkt->set<uint8_t>(data); 122 break; 123 case 2: 124 pkt->set<uint16_t>(data); 125 break; 126 case 4: 127 pkt->set<uint32_t>(data); 128 break; 129 default: 130 panic("KMI read size too big?\n"); 131 break; 132 } 133 134 pkt->makeAtomicResponse(); 135 return pioDelay; 136} 137 138Tick 139Pl050::write(PacketPtr pkt) 140{ 141 142 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 143 144 Addr daddr = pkt->getAddr() - pioAddr; 145 146 assert(pkt->getSize() == sizeof(uint8_t)); 147 148 149 switch (daddr) { 150 case kmiCr: 151 DPRINTF(Pl050, "Write Commmand: %#x\n", (uint32_t)pkt->get<uint8_t>()); 152 control = pkt->get<uint8_t>(); 153 updateIntStatus(); 154 break; 155 case kmiData: 156 DPRINTF(Pl050, "Write Data: %#x\n", (uint32_t)pkt->get<uint8_t>()); 157 processCommand(pkt->get<uint8_t>()); 158 updateIntStatus(); 159 break; 160 case kmiClkDiv: 161 clkdiv = pkt->get<uint8_t>(); 162 break; 163 default: 164 warn("Tried to write PL050 at offset %#x that doesn't exist\n", daddr); 165 break; 166 } 167 pkt->makeAtomicResponse(); 168 return pioDelay; 169} 170 171void 172Pl050::processCommand(uint8_t byte) 173{ 174 using namespace Ps2; 175 176 if (ackNext) { 177 ackNext--; 178 rxQueue.push_back(Ack); 179 updateIntStatus(); 180 return; 181 } 182 183 switch (byte) { 184 case Ps2Reset: 185 rxQueue.push_back(Ack); 186 rxQueue.push_back(SelfTestPass); 187 break; 188 case SetResolution: 189 case SetRate: 190 case SetStatusLed:
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214 rxQueue.push_back(Ack); 215 break; 216 case StatusRequest: 217 rxQueue.push_back(Ack); 218 rxQueue.push_back(0); 219 rxQueue.push_back(2); // default resolution 220 rxQueue.push_back(100); // default sample rate 221 break; 222 case TouchKitId: 223 ackNext = 2; 224 rxQueue.push_back(Ack); 225 rxQueue.push_back(TouchKitId); 226 rxQueue.push_back(1); 227 rxQueue.push_back('A'); 228 229 driverInitialized = true; 230 break; 231 default: 232 panic("Unknown byte received: %d\n", byte); 233 } 234 235 updateIntStatus(); 236} 237 238 239void 240Pl050::updateIntStatus() 241{ 242 const bool old_interrupt(getInterrupt()); 243 244 if (!rxQueue.empty()) 245 rawInterrupts.rx = 1; 246 else 247 rawInterrupts.rx = 0; 248 249 if ((!old_interrupt && getInterrupt()) && !intEvent.scheduled()) { 250 schedule(intEvent, curTick() + intDelay); 251 } else if (old_interrupt && !(getInterrupt())) { 252 gic->clearInt(intNum); 253 } 254} 255 256void 257Pl050::generateInterrupt() 258{ 259 DPRINTF(Pl050, "Generate Interrupt: rawInt=%#x ctrl=%#x int=%#x\n", 260 rawInterrupts, control, getInterrupt()); 261 262 if (getInterrupt()) { 263 gic->sendInt(intNum); 264 DPRINTF(Pl050, " -- Generated\n"); 265 } 266} 267 268void 269Pl050::mouseAt(uint16_t x, uint16_t y, uint8_t buttons) 270{ 271 using namespace Ps2; 272 273 // If the driver hasn't initialized the device yet, no need to try and send 274 // it anything. Similarly we can get vnc mouse events orders of maginture 275 // faster than m5 can process them. Only queue up two sets mouse movements 276 // and don't add more until those are processed. 277 if (!driverInitialized || rxQueue.size() > 10) 278 return; 279 280 // We shouldn't be here unless a vnc server called us in which case 281 // we should have a pointer to it 282 assert(vnc); 283 284 // Convert screen coordinates to touchpad coordinates 285 uint16_t _x = (2047.0/vnc->videoWidth()) * x; 286 uint16_t _y = (2047.0/vnc->videoHeight()) * y; 287 288 rxQueue.push_back(buttons); 289 rxQueue.push_back(_x >> 7); 290 rxQueue.push_back(_x & 0x7f); 291 rxQueue.push_back(_y >> 7); 292 rxQueue.push_back(_y & 0x7f); 293 294 updateIntStatus(); 295} 296 297 298void 299Pl050::keyPress(uint32_t key, bool down) 300{ 301 using namespace Ps2; 302 303 std::list<uint8_t> keys; 304 305 // convert the X11 keysym into ps2 codes 306 keySymToPs2(key, down, shiftDown, keys); 307 308 // Insert into our queue of charecters 309 rxQueue.splice(rxQueue.end(), keys); 310 updateIntStatus(); 311} 312 313void 314Pl050::serialize(CheckpointOut &cp) const 315{ 316 uint8_t ctrlreg = control; 317 SERIALIZE_SCALAR(ctrlreg); 318 319 uint8_t stsreg = status; 320 SERIALIZE_SCALAR(stsreg); 321 SERIALIZE_SCALAR(clkdiv); 322 323 uint8_t raw_ints = rawInterrupts; 324 SERIALIZE_SCALAR(raw_ints); 325 326 SERIALIZE_SCALAR(ackNext); 327 SERIALIZE_SCALAR(shiftDown); 328 SERIALIZE_SCALAR(driverInitialized); 329 330 SERIALIZE_CONTAINER(rxQueue); 331} 332 333void 334Pl050::unserialize(CheckpointIn &cp) 335{ 336 uint8_t ctrlreg; 337 UNSERIALIZE_SCALAR(ctrlreg); 338 control = ctrlreg; 339 340 uint8_t stsreg; 341 UNSERIALIZE_SCALAR(stsreg); 342 status = stsreg; 343 344 UNSERIALIZE_SCALAR(clkdiv); 345 346 uint8_t raw_ints; 347 UNSERIALIZE_SCALAR(raw_ints); 348 rawInterrupts = raw_ints; 349 350 UNSERIALIZE_SCALAR(ackNext); 351 UNSERIALIZE_SCALAR(shiftDown); 352 UNSERIALIZE_SCALAR(driverInitialized); 353 354 UNSERIALIZE_CONTAINER(rxQueue); 355} 356 357 358 359Pl050 * 360Pl050Params::create() 361{ 362 return new Pl050(this); 363}
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