io_device.cc (2846:89fbe74d8ea8) | io_device.cc (2901:f9a45473ab55) |
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1/* 2 * Copyright (c) 2006 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; --- 18 unchanged lines hidden (view full) --- 27 * 28 * Authors: Ali Saidi 29 * Nathan Binkert 30 */ 31 32#include "base/trace.hh" 33#include "dev/io_device.hh" 34#include "sim/builder.hh" | 1/* 2 * Copyright (c) 2006 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; --- 18 unchanged lines hidden (view full) --- 27 * 28 * Authors: Ali Saidi 29 * Nathan Binkert 30 */ 31 32#include "base/trace.hh" 33#include "dev/io_device.hh" 34#include "sim/builder.hh" |
35#include "sim/system.hh" |
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35 36 | 36 37 |
37PioPort::PioPort(PioDevice *dev, Platform *p, std::string pname) 38 : Port(dev->name() + pname), device(dev), platform(p) | 38PioPort::PioPort(PioDevice *dev, System *s, std::string pname) 39 : Port(dev->name() + pname), device(dev), sys(s), 40 outTiming(0), drainEvent(NULL) |
39{ } 40 41 42Tick 43PioPort::recvAtomic(Packet *pkt) 44{ 45 return device->recvAtomic(pkt); 46} --- 16 unchanged lines hidden (view full) --- 63PioPort::recvRetry() 64{ 65 bool result = true; 66 while (result && transmitList.size()) { 67 result = Port::sendTiming(transmitList.front()); 68 if (result) 69 transmitList.pop_front(); 70 } | 41{ } 42 43 44Tick 45PioPort::recvAtomic(Packet *pkt) 46{ 47 return device->recvAtomic(pkt); 48} --- 16 unchanged lines hidden (view full) --- 65PioPort::recvRetry() 66{ 67 bool result = true; 68 while (result && transmitList.size()) { 69 result = Port::sendTiming(transmitList.front()); 70 if (result) 71 transmitList.pop_front(); 72 } |
73 if (transmitList.size() == 0 && drainEvent) { 74 drainEvent->process(); 75 drainEvent = NULL; 76 } |
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71} 72 73void 74PioPort::SendEvent::process() 75{ | 77} 78 79void 80PioPort::SendEvent::process() 81{ |
82 port->outTiming--; 83 assert(port->outTiming >= 0); |
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76 if (port->Port::sendTiming(packet)) | 84 if (port->Port::sendTiming(packet)) |
77 return; | 85 if (port->transmitList.size() == 0 && port->drainEvent) { 86 port->drainEvent->process(); 87 port->drainEvent = NULL; 88 } 89 return; |
78 79 port->transmitList.push_back(packet); 80} 81 82void 83PioPort::resendNacked(Packet *pkt) { 84 pkt->reinitNacked(); 85 if (transmitList.size()) { --- 14 unchanged lines hidden (view full) --- 100 Tick latency = device->recvAtomic(pkt); 101 // turn packet around to go back to requester 102 pkt->makeTimingResponse(); 103 sendTiming(pkt, latency); 104 } 105 return true; 106} 107 | 90 91 port->transmitList.push_back(packet); 92} 93 94void 95PioPort::resendNacked(Packet *pkt) { 96 pkt->reinitNacked(); 97 if (transmitList.size()) { --- 14 unchanged lines hidden (view full) --- 112 Tick latency = device->recvAtomic(pkt); 113 // turn packet around to go back to requester 114 pkt->makeTimingResponse(); 115 sendTiming(pkt, latency); 116 } 117 return true; 118} 119 |
120unsigned int 121PioPort::drain(Event *de) 122{ 123 if (outTiming == 0 && transmitList.size() == 0) 124 return 0; 125 drainEvent = de; 126 return 1; 127} 128 |
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108PioDevice::~PioDevice() 109{ 110 if (pioPort) 111 delete pioPort; 112} 113 114void 115PioDevice::init() 116{ 117 if (!pioPort) 118 panic("Pio port not connected to anything!"); 119 pioPort->sendStatusChange(Port::RangeChange); 120} 121 | 129PioDevice::~PioDevice() 130{ 131 if (pioPort) 132 delete pioPort; 133} 134 135void 136PioDevice::init() 137{ 138 if (!pioPort) 139 panic("Pio port not connected to anything!"); 140 pioPort->sendStatusChange(Port::RangeChange); 141} 142 |
143 144unsigned int 145PioDevice::drain(Event *de) 146{ 147 unsigned int count; 148 count = pioPort->drain(de); 149 if (count) 150 changeState(Draining); 151 else 152 changeState(Drained); 153 return count; 154} 155 |
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122void 123BasicPioDevice::addressRanges(AddrRangeList &range_list) 124{ 125 assert(pioSize != 0); 126 range_list.clear(); 127 range_list.push_back(RangeSize(pioAddr, pioSize)); 128} 129 130 | 156void 157BasicPioDevice::addressRanges(AddrRangeList &range_list) 158{ 159 assert(pioSize != 0); 160 range_list.clear(); 161 range_list.push_back(RangeSize(pioAddr, pioSize)); 162} 163 164 |
131DmaPort::DmaPort(DmaDevice *dev, Platform *p) 132 : Port(dev->name() + "-dmaport"), device(dev), platform(p), pendingCount(0) | 165DmaPort::DmaPort(DmaDevice *dev, System *s) 166 : Port(dev->name() + "-dmaport"), device(dev), sys(s), pendingCount(0), 167 actionInProgress(0), drainEvent(NULL) |
133{ } 134 135bool 136DmaPort::recvTiming(Packet *pkt) 137{ 138 139 140 if (pkt->result == Packet::Nacked) { --- 13 unchanged lines hidden (view full) --- 154 155 state->numBytes += pkt->req->getSize(); 156 if (state->totBytes == state->numBytes) { 157 state->completionEvent->process(); 158 delete state; 159 } 160 delete pkt->req; 161 delete pkt; | 168{ } 169 170bool 171DmaPort::recvTiming(Packet *pkt) 172{ 173 174 175 if (pkt->result == Packet::Nacked) { --- 13 unchanged lines hidden (view full) --- 189 190 state->numBytes += pkt->req->getSize(); 191 if (state->totBytes == state->numBytes) { 192 state->completionEvent->process(); 193 delete state; 194 } 195 delete pkt->req; 196 delete pkt; |
197 198 if (pendingCount == 0 && drainEvent) { 199 drainEvent->process(); 200 drainEvent = NULL; 201 } |
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162 } else { 163 panic("Got packet without sender state... huh?\n"); 164 } 165 166 return true; 167} 168 169DmaDevice::DmaDevice(Params *p) 170 : PioDevice(p), dmaPort(NULL) 171{ } 172 | 202 } else { 203 panic("Got packet without sender state... huh?\n"); 204 } 205 206 return true; 207} 208 209DmaDevice::DmaDevice(Params *p) 210 : PioDevice(p), dmaPort(NULL) 211{ } 212 |
213 214unsigned int 215DmaDevice::drain(Event *de) 216{ 217 unsigned int count; 218 count = pioPort->drain(de) + dmaPort->drain(de); 219 if (count) 220 changeState(Draining); 221 else 222 changeState(Drained); 223 return count; 224} 225 226unsigned int 227DmaPort::drain(Event *de) 228{ 229 if (pendingCount == 0) 230 return 0; 231 drainEvent = de; 232 return 1; 233} 234 235 |
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173void 174DmaPort::recvRetry() 175{ 176 Packet* pkt = transmitList.front(); 177 bool result = true; 178 while (result && transmitList.size()) { 179 DPRINTF(DMA, "Retry on Packet %#x with senderState: %#x\n", 180 pkt, pkt->senderState); --- 9 unchanged lines hidden (view full) --- 190 191 192void 193DmaPort::dmaAction(Packet::Command cmd, Addr addr, int size, Event *event, 194 uint8_t *data) 195{ 196 assert(event); 197 | 236void 237DmaPort::recvRetry() 238{ 239 Packet* pkt = transmitList.front(); 240 bool result = true; 241 while (result && transmitList.size()) { 242 DPRINTF(DMA, "Retry on Packet %#x with senderState: %#x\n", 243 pkt, pkt->senderState); --- 9 unchanged lines hidden (view full) --- 253 254 255void 256DmaPort::dmaAction(Packet::Command cmd, Addr addr, int size, Event *event, 257 uint8_t *data) 258{ 259 assert(event); 260 |
261 assert(device->getState() == SimObject::Running); 262 |
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198 DmaReqState *reqState = new DmaReqState(event, this, size); 199 200 for (ChunkGenerator gen(addr, size, peerBlockSize()); 201 !gen.done(); gen.next()) { 202 Request *req = new Request(gen.addr(), gen.size(), 0); 203 Packet *pkt = new Packet(req, cmd, Packet::Broadcast); 204 205 // Increment the data pointer on a write 206 if (data) 207 pkt->dataStatic(data + gen.complete()); 208 209 pkt->senderState = reqState; 210 211 assert(pendingCount >= 0); 212 pendingCount++; 213 sendDma(pkt); 214 } | 263 DmaReqState *reqState = new DmaReqState(event, this, size); 264 265 for (ChunkGenerator gen(addr, size, peerBlockSize()); 266 !gen.done(); gen.next()) { 267 Request *req = new Request(gen.addr(), gen.size(), 0); 268 Packet *pkt = new Packet(req, cmd, Packet::Broadcast); 269 270 // Increment the data pointer on a write 271 if (data) 272 pkt->dataStatic(data + gen.complete()); 273 274 pkt->senderState = reqState; 275 276 assert(pendingCount >= 0); 277 pendingCount++; 278 sendDma(pkt); 279 } |
280 |
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215} 216 217 218void 219DmaPort::sendDma(Packet *pkt, bool front) 220{ | 281} 282 283 284void 285DmaPort::sendDma(Packet *pkt, bool front) 286{ |
221 // some kind of selction between access methods 222 // more work is going to have to be done to make 223 // switching actually work 224 /* MemState state = device->platform->system->memState; | 287 // some kind of selction between access methods 288 // more work is going to have to be done to make 289 // switching actually work 290 System::MemoryMode state = sys->getMemoryMode(); 291 if (state == System::Timing) { 292 DPRINTF(DMA, "Attempting to send Packet %#x with addr: %#x\n", 293 pkt, pkt->getAddr()); 294 if (transmitList.size() || !sendTiming(pkt)) { 295 if (front) 296 transmitList.push_front(pkt); 297 else 298 transmitList.push_back(pkt); 299 DPRINTF(DMA, "-- Failed: queued\n"); 300 } else { 301 DPRINTF(DMA, "-- Done\n"); 302 } 303 } else if (state == System::Atomic) { 304 sendAtomic(pkt); 305 assert(pkt->senderState); 306 DmaReqState *state = dynamic_cast<DmaReqState*>(pkt->senderState); 307 assert(state); |
225 | 308 |
226 if (state == Timing) { */ 227 DPRINTF(DMA, "Attempting to send Packet %#x with addr: %#x\n", 228 pkt, pkt->getAddr()); 229 if (transmitList.size() || !sendTiming(pkt)) { 230 if (front) 231 transmitList.push_front(pkt); 232 else 233 transmitList.push_back(pkt); 234 DPRINTF(DMA, "-- Failed: queued\n"); 235 } else { 236 DPRINTF(DMA, "-- Done\n"); 237 } 238 /* } else if (state == Atomic) { 239 sendAtomic(pkt); 240 if (pkt->senderState) { 241 DmaReqState *state = dynamic_cast<DmaReqState*>(pkt->senderState); 242 assert(state); 243 state->completionEvent->schedule(curTick + (pkt->time - 244 pkt->req->getTime()) +1); 245 delete state; 246 } 247 pendingCount--; 248 assert(pendingCount >= 0); 249 delete pkt->req; 250 delete pkt; | 309 state->numBytes += pkt->req->getSize(); 310 if (state->totBytes == state->numBytes) { 311 state->completionEvent->schedule(curTick + 312 (pkt->time - pkt->req->getTime()) +1); 313 delete state; 314 delete pkt->req; 315 } 316 pendingCount--; 317 assert(pendingCount >= 0); 318 delete pkt; |
251 | 319 |
252 } else if (state == Functional) { 253 sendFunctional(pkt); 254 // Is this correct??? 255 completionEvent->schedule(pkt->req->responseTime - pkt->req->requestTime); 256 completionEvent == NULL; | 320 if (pendingCount == 0 && drainEvent) { 321 drainEvent->process(); 322 drainEvent = NULL; 323 } 324 |
257 } else 258 panic("Unknown memory command state."); | 325 } else 326 panic("Unknown memory command state."); |
259 */ | |
260} 261 262DmaDevice::~DmaDevice() 263{ 264 if (dmaPort) 265 delete dmaPort; 266} 267 268 | 327} 328 329DmaDevice::~DmaDevice() 330{ 331 if (dmaPort) 332 delete dmaPort; 333} 334 335 |