io_device.cc revision 8922
112137Sar4jc@virginia.edu/* 212137Sar4jc@virginia.edu * Copyright (c) 2006 The Regents of The University of Michigan 312137Sar4jc@virginia.edu * All rights reserved. 412137Sar4jc@virginia.edu * 512137Sar4jc@virginia.edu * Redistribution and use in source and binary forms, with or without 612137Sar4jc@virginia.edu * modification, are permitted provided that the following conditions are 712137Sar4jc@virginia.edu * met: redistributions of source code must retain the above copyright 812137Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer; 912137Sar4jc@virginia.edu * redistributions in binary form must reproduce the above copyright 1012137Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer in the 1112137Sar4jc@virginia.edu * documentation and/or other materials provided with the distribution; 1212137Sar4jc@virginia.edu * neither the name of the copyright holders nor the names of its 1312137Sar4jc@virginia.edu * contributors may be used to endorse or promote products derived from 1412137Sar4jc@virginia.edu * this software without specific prior written permission. 1512137Sar4jc@virginia.edu * 1612137Sar4jc@virginia.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712137Sar4jc@virginia.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812137Sar4jc@virginia.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912137Sar4jc@virginia.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012137Sar4jc@virginia.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112137Sar4jc@virginia.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212137Sar4jc@virginia.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312137Sar4jc@virginia.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412137Sar4jc@virginia.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512137Sar4jc@virginia.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612137Sar4jc@virginia.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712137Sar4jc@virginia.edu * 2812137Sar4jc@virginia.edu * Authors: Ali Saidi 2912137Sar4jc@virginia.edu * Nathan Binkert 3012137Sar4jc@virginia.edu */ 3112137Sar4jc@virginia.edu 3212137Sar4jc@virginia.edu#include "base/chunk_generator.hh" 3312137Sar4jc@virginia.edu#include "base/trace.hh" 3412137Sar4jc@virginia.edu#include "debug/BusAddrRanges.hh" 3512137Sar4jc@virginia.edu#include "debug/DMA.hh" 3612137Sar4jc@virginia.edu#include "dev/io_device.hh" 3712137Sar4jc@virginia.edu#include "sim/system.hh" 3812137Sar4jc@virginia.edu 3912137Sar4jc@virginia.eduPioPort::PioPort(PioDevice *dev) 4012137Sar4jc@virginia.edu : SimpleTimingPort(dev->name() + "-pioport", dev), device(dev) 4112137Sar4jc@virginia.edu{ 4212137Sar4jc@virginia.edu} 4312137Sar4jc@virginia.edu 4412137Sar4jc@virginia.edu 4512137Sar4jc@virginia.eduTick 4612137Sar4jc@virginia.eduPioPort::recvAtomic(PacketPtr pkt) 4712137Sar4jc@virginia.edu{ 4812137Sar4jc@virginia.edu return pkt->isRead() ? device->read(pkt) : device->write(pkt); 4912137Sar4jc@virginia.edu} 5012137Sar4jc@virginia.edu 5112137Sar4jc@virginia.eduAddrRangeList 5212137Sar4jc@virginia.eduPioPort::getAddrRanges() 5312137Sar4jc@virginia.edu{ 5412137Sar4jc@virginia.edu return device->getAddrRanges(); 5512137Sar4jc@virginia.edu} 5612137Sar4jc@virginia.edu 5712137Sar4jc@virginia.edu 5812137Sar4jc@virginia.eduPioDevice::PioDevice(const Params *p) 5912137Sar4jc@virginia.edu : MemObject(p), sys(p->system), pioPort(this) 6012137Sar4jc@virginia.edu{} 6112137Sar4jc@virginia.edu 6212137Sar4jc@virginia.eduPioDevice::~PioDevice() 6312137Sar4jc@virginia.edu{ 6412137Sar4jc@virginia.edu} 6512137Sar4jc@virginia.edu 6612137Sar4jc@virginia.eduvoid 6712137Sar4jc@virginia.eduPioDevice::init() 6812137Sar4jc@virginia.edu{ 6912137Sar4jc@virginia.edu if (!pioPort.isConnected()) 7012137Sar4jc@virginia.edu panic("Pio port of %s not connected to anything!", name()); 7112137Sar4jc@virginia.edu pioPort.sendRangeChange(); 7212137Sar4jc@virginia.edu} 7312137Sar4jc@virginia.edu 7412137Sar4jc@virginia.eduSlavePort & 7512137Sar4jc@virginia.eduPioDevice::getSlavePort(const std::string &if_name, int idx) 7612137Sar4jc@virginia.edu{ 7712137Sar4jc@virginia.edu if (if_name == "pio") { 7812137Sar4jc@virginia.edu return pioPort; 7912137Sar4jc@virginia.edu } 8012137Sar4jc@virginia.edu return MemObject::getSlavePort(if_name, idx); 8112137Sar4jc@virginia.edu} 8212137Sar4jc@virginia.edu 8312137Sar4jc@virginia.eduunsigned int 8412137Sar4jc@virginia.eduPioDevice::drain(Event *de) 8512137Sar4jc@virginia.edu{ 8612137Sar4jc@virginia.edu unsigned int count; 8712137Sar4jc@virginia.edu count = pioPort.drain(de); 8812137Sar4jc@virginia.edu if (count) 8912137Sar4jc@virginia.edu changeState(Draining); 9012137Sar4jc@virginia.edu else 9112137Sar4jc@virginia.edu changeState(Drained); 9212137Sar4jc@virginia.edu return count; 9312137Sar4jc@virginia.edu} 9412137Sar4jc@virginia.edu 9512137Sar4jc@virginia.eduBasicPioDevice::BasicPioDevice(const Params *p) 9612137Sar4jc@virginia.edu : PioDevice(p), pioAddr(p->pio_addr), pioSize(0), 9712137Sar4jc@virginia.edu pioDelay(p->pio_latency) 9812137Sar4jc@virginia.edu{} 9912137Sar4jc@virginia.edu 10012137Sar4jc@virginia.eduAddrRangeList 10112137Sar4jc@virginia.eduBasicPioDevice::getAddrRanges() 10212137Sar4jc@virginia.edu{ 10312137Sar4jc@virginia.edu assert(pioSize != 0); 10412137Sar4jc@virginia.edu AddrRangeList ranges; 10512137Sar4jc@virginia.edu DPRINTF(BusAddrRanges, "registering range: %#x-%#x\n", pioAddr, pioSize); 10612137Sar4jc@virginia.edu ranges.push_back(RangeSize(pioAddr, pioSize)); 10712137Sar4jc@virginia.edu return ranges; 10812137Sar4jc@virginia.edu} 10912137Sar4jc@virginia.edu 11012137Sar4jc@virginia.edu 11112137Sar4jc@virginia.eduDmaPort::DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff, 11212137Sar4jc@virginia.edu bool recv_snoops) 11312137Sar4jc@virginia.edu : MasterPort(dev->name() + "-dmaport", dev), device(dev), sys(s), 11412137Sar4jc@virginia.edu masterId(s->getMasterId(dev->name())), 11512137Sar4jc@virginia.edu pendingCount(0), actionInProgress(0), drainEvent(NULL), 11612137Sar4jc@virginia.edu backoffTime(0), minBackoffDelay(min_backoff), 11712137Sar4jc@virginia.edu maxBackoffDelay(max_backoff), inRetry(false), recvSnoops(recv_snoops), 11812137Sar4jc@virginia.edu backoffEvent(this) 11912137Sar4jc@virginia.edu{ } 12012137Sar4jc@virginia.edu 12112137Sar4jc@virginia.edubool 12212137Sar4jc@virginia.eduDmaPort::recvTiming(PacketPtr pkt) 12312137Sar4jc@virginia.edu{ 12412137Sar4jc@virginia.edu if (pkt->wasNacked()) { 12512137Sar4jc@virginia.edu DPRINTF(DMA, "Received nacked %s addr %#x\n", 12612137Sar4jc@virginia.edu pkt->cmdString(), pkt->getAddr()); 12712137Sar4jc@virginia.edu 12812137Sar4jc@virginia.edu if (backoffTime < minBackoffDelay) 12912137Sar4jc@virginia.edu backoffTime = minBackoffDelay; 13012137Sar4jc@virginia.edu else if (backoffTime < maxBackoffDelay) 13112137Sar4jc@virginia.edu backoffTime <<= 1; 13212137Sar4jc@virginia.edu 13312137Sar4jc@virginia.edu device->reschedule(backoffEvent, curTick() + backoffTime, true); 13412137Sar4jc@virginia.edu 13512137Sar4jc@virginia.edu DPRINTF(DMA, "Backoff time set to %d ticks\n", backoffTime); 13612137Sar4jc@virginia.edu 13712137Sar4jc@virginia.edu pkt->reinitNacked(); 13812137Sar4jc@virginia.edu queueDma(pkt, true); 13912137Sar4jc@virginia.edu } else if (pkt->isRequest() && recvSnoops) { 14012137Sar4jc@virginia.edu return true; 14112137Sar4jc@virginia.edu } else if (pkt->senderState) { 14212137Sar4jc@virginia.edu DmaReqState *state; 14312137Sar4jc@virginia.edu backoffTime >>= 2; 14412137Sar4jc@virginia.edu 14512137Sar4jc@virginia.edu DPRINTF(DMA, "Received response %s addr %#x size %#x\n", 14612137Sar4jc@virginia.edu pkt->cmdString(), pkt->getAddr(), pkt->req->getSize()); 14712137Sar4jc@virginia.edu state = dynamic_cast<DmaReqState*>(pkt->senderState); 14812137Sar4jc@virginia.edu pendingCount--; 14912137Sar4jc@virginia.edu 15012137Sar4jc@virginia.edu assert(pendingCount >= 0); 15112137Sar4jc@virginia.edu assert(state); 15212137Sar4jc@virginia.edu 15312137Sar4jc@virginia.edu // We shouldn't ever get a block in ownership state 15412137Sar4jc@virginia.edu assert(!(pkt->memInhibitAsserted() && !pkt->sharedAsserted())); 15512137Sar4jc@virginia.edu 15612137Sar4jc@virginia.edu state->numBytes += pkt->req->getSize(); 15712137Sar4jc@virginia.edu assert(state->totBytes >= state->numBytes); 15812137Sar4jc@virginia.edu if (state->totBytes == state->numBytes) { 15912137Sar4jc@virginia.edu if (state->completionEvent) { 16012137Sar4jc@virginia.edu if (state->delay) 16112137Sar4jc@virginia.edu device->schedule(state->completionEvent, 16212137Sar4jc@virginia.edu curTick() + state->delay); 16312137Sar4jc@virginia.edu else 16412137Sar4jc@virginia.edu state->completionEvent->process(); 16512137Sar4jc@virginia.edu } 16612137Sar4jc@virginia.edu delete state; 16712137Sar4jc@virginia.edu } 16812137Sar4jc@virginia.edu delete pkt->req; 16912137Sar4jc@virginia.edu delete pkt; 17012137Sar4jc@virginia.edu 17112137Sar4jc@virginia.edu if (pendingCount == 0 && drainEvent) { 17212137Sar4jc@virginia.edu drainEvent->process(); 17312137Sar4jc@virginia.edu drainEvent = NULL; 17412137Sar4jc@virginia.edu } 17512137Sar4jc@virginia.edu } else { 17612137Sar4jc@virginia.edu panic("Got packet without sender state... huh?\n"); 17712137Sar4jc@virginia.edu } 17812137Sar4jc@virginia.edu 17912137Sar4jc@virginia.edu return true; 18012137Sar4jc@virginia.edu} 18112137Sar4jc@virginia.edu 18212137Sar4jc@virginia.eduDmaDevice::DmaDevice(const Params *p) 18312137Sar4jc@virginia.edu : PioDevice(p), dmaPort(this, sys, params()->min_backoff_delay, 18412137Sar4jc@virginia.edu params()->max_backoff_delay) 18512137Sar4jc@virginia.edu{ } 18612137Sar4jc@virginia.edu 18712137Sar4jc@virginia.eduvoid 18812137Sar4jc@virginia.eduDmaDevice::init() 18912137Sar4jc@virginia.edu{ 19012137Sar4jc@virginia.edu if (!dmaPort.isConnected()) 19112137Sar4jc@virginia.edu panic("DMA port of %s not connected to anything!", name()); 19212137Sar4jc@virginia.edu PioDevice::init(); 19312137Sar4jc@virginia.edu} 19412137Sar4jc@virginia.edu 19512137Sar4jc@virginia.eduunsigned int 19612137Sar4jc@virginia.eduDmaDevice::drain(Event *de) 19712137Sar4jc@virginia.edu{ 19812137Sar4jc@virginia.edu unsigned int count; 19912137Sar4jc@virginia.edu count = pioPort.drain(de) + dmaPort.drain(de); 20012137Sar4jc@virginia.edu if (count) 20112137Sar4jc@virginia.edu changeState(Draining); 20212137Sar4jc@virginia.edu else 20312137Sar4jc@virginia.edu changeState(Drained); 20412137Sar4jc@virginia.edu return count; 20512137Sar4jc@virginia.edu} 20612137Sar4jc@virginia.edu 20712137Sar4jc@virginia.eduunsigned int 20812137Sar4jc@virginia.eduDmaPort::drain(Event *de) 20912137Sar4jc@virginia.edu{ 21012137Sar4jc@virginia.edu if (pendingCount == 0) 21112137Sar4jc@virginia.edu return 0; 21212137Sar4jc@virginia.edu drainEvent = de; 21312137Sar4jc@virginia.edu return 1; 21412137Sar4jc@virginia.edu} 21512137Sar4jc@virginia.edu 21612137Sar4jc@virginia.edu 21712137Sar4jc@virginia.eduvoid 21812137Sar4jc@virginia.eduDmaPort::recvRetry() 21912137Sar4jc@virginia.edu{ 22012137Sar4jc@virginia.edu assert(transmitList.size()); 22112137Sar4jc@virginia.edu bool result = true; 22212137Sar4jc@virginia.edu do { 22312137Sar4jc@virginia.edu PacketPtr pkt = transmitList.front(); 22412137Sar4jc@virginia.edu DPRINTF(DMA, "Retry on %s addr %#x\n", 22512137Sar4jc@virginia.edu pkt->cmdString(), pkt->getAddr()); 22612137Sar4jc@virginia.edu result = sendTiming(pkt); 22712137Sar4jc@virginia.edu if (result) { 22812137Sar4jc@virginia.edu DPRINTF(DMA, "-- Done\n"); 22912137Sar4jc@virginia.edu transmitList.pop_front(); 23012137Sar4jc@virginia.edu inRetry = false; 23112137Sar4jc@virginia.edu } else { 23212137Sar4jc@virginia.edu inRetry = true; 23312137Sar4jc@virginia.edu DPRINTF(DMA, "-- Failed, queued\n"); 23412137Sar4jc@virginia.edu } 23512137Sar4jc@virginia.edu } while (!backoffTime && result && transmitList.size()); 23612137Sar4jc@virginia.edu 23712137Sar4jc@virginia.edu if (transmitList.size() && backoffTime && !inRetry) { 23812137Sar4jc@virginia.edu DPRINTF(DMA, "Scheduling backoff for %d\n", curTick()+backoffTime); 23912137Sar4jc@virginia.edu if (!backoffEvent.scheduled()) 24012137Sar4jc@virginia.edu device->schedule(backoffEvent, backoffTime + curTick()); 24112137Sar4jc@virginia.edu } 24212137Sar4jc@virginia.edu DPRINTF(DMA, "TransmitList: %d, backoffTime: %d inRetry: %d es: %d\n", 24312137Sar4jc@virginia.edu transmitList.size(), backoffTime, inRetry, 24412137Sar4jc@virginia.edu backoffEvent.scheduled()); 24512137Sar4jc@virginia.edu} 24612137Sar4jc@virginia.edu 24712137Sar4jc@virginia.edu 24812137Sar4jc@virginia.eduvoid 24912137Sar4jc@virginia.eduDmaPort::dmaAction(Packet::Command cmd, Addr addr, int size, Event *event, 25012137Sar4jc@virginia.edu uint8_t *data, Tick delay, Request::Flags flag) 25112137Sar4jc@virginia.edu{ 25212137Sar4jc@virginia.edu assert(device->getState() == SimObject::Running); 25312137Sar4jc@virginia.edu 25412137Sar4jc@virginia.edu DmaReqState *reqState = new DmaReqState(event, this, size, delay); 25512137Sar4jc@virginia.edu 25612137Sar4jc@virginia.edu 25712137Sar4jc@virginia.edu DPRINTF(DMA, "Starting DMA for addr: %#x size: %d sched: %d\n", addr, size, 25812137Sar4jc@virginia.edu event ? event->scheduled() : -1 ); 25912137Sar4jc@virginia.edu for (ChunkGenerator gen(addr, size, peerBlockSize()); 26012137Sar4jc@virginia.edu !gen.done(); gen.next()) { 26112137Sar4jc@virginia.edu Request *req = new Request(gen.addr(), gen.size(), flag, masterId); 26212137Sar4jc@virginia.edu PacketPtr pkt = new Packet(req, cmd, Packet::Broadcast); 26312137Sar4jc@virginia.edu 26412137Sar4jc@virginia.edu // Increment the data pointer on a write 26512137Sar4jc@virginia.edu if (data) 26612137Sar4jc@virginia.edu pkt->dataStatic(data + gen.complete()); 26712137Sar4jc@virginia.edu 26812137Sar4jc@virginia.edu pkt->senderState = reqState; 26912137Sar4jc@virginia.edu 27012137Sar4jc@virginia.edu assert(pendingCount >= 0); 27112137Sar4jc@virginia.edu pendingCount++; 27212137Sar4jc@virginia.edu DPRINTF(DMA, "--Queuing DMA for addr: %#x size: %d\n", gen.addr(), 27312137Sar4jc@virginia.edu gen.size()); 27412137Sar4jc@virginia.edu queueDma(pkt); 27512137Sar4jc@virginia.edu } 27612137Sar4jc@virginia.edu 27712137Sar4jc@virginia.edu} 27812137Sar4jc@virginia.edu 27912137Sar4jc@virginia.eduvoid 28012137Sar4jc@virginia.eduDmaPort::queueDma(PacketPtr pkt, bool front) 28112137Sar4jc@virginia.edu{ 28212137Sar4jc@virginia.edu 28312137Sar4jc@virginia.edu if (front) 28412137Sar4jc@virginia.edu transmitList.push_front(pkt); 28512137Sar4jc@virginia.edu else 28612137Sar4jc@virginia.edu transmitList.push_back(pkt); 28712137Sar4jc@virginia.edu sendDma(); 28812137Sar4jc@virginia.edu} 28912137Sar4jc@virginia.edu 29012137Sar4jc@virginia.edu 29112137Sar4jc@virginia.eduvoid 29212137Sar4jc@virginia.eduDmaPort::sendDma() 29312137Sar4jc@virginia.edu{ 29412137Sar4jc@virginia.edu // some kind of selction between access methods 29512137Sar4jc@virginia.edu // more work is going to have to be done to make 29612137Sar4jc@virginia.edu // switching actually work 29712137Sar4jc@virginia.edu assert(transmitList.size()); 29812137Sar4jc@virginia.edu PacketPtr pkt = transmitList.front(); 29912137Sar4jc@virginia.edu 30012137Sar4jc@virginia.edu Enums::MemoryMode state = sys->getMemoryMode(); 30112137Sar4jc@virginia.edu if (state == Enums::timing) { 30212137Sar4jc@virginia.edu if (backoffEvent.scheduled() || inRetry) { 30312137Sar4jc@virginia.edu DPRINTF(DMA, "Can't send immediately, waiting for retry or backoff timer\n"); 30412137Sar4jc@virginia.edu return; 30512137Sar4jc@virginia.edu } 30612137Sar4jc@virginia.edu 30712137Sar4jc@virginia.edu DPRINTF(DMA, "Attempting to send %s addr %#x\n", 30812137Sar4jc@virginia.edu pkt->cmdString(), pkt->getAddr()); 30912137Sar4jc@virginia.edu 31012137Sar4jc@virginia.edu bool result; 31112137Sar4jc@virginia.edu do { 31212137Sar4jc@virginia.edu result = sendTiming(pkt); 31312137Sar4jc@virginia.edu if (result) { 31412137Sar4jc@virginia.edu transmitList.pop_front(); 31512137Sar4jc@virginia.edu DPRINTF(DMA, "-- Done\n"); 31612137Sar4jc@virginia.edu } else { 31712137Sar4jc@virginia.edu inRetry = true; 31812137Sar4jc@virginia.edu DPRINTF(DMA, "-- Failed: queued\n"); 31912137Sar4jc@virginia.edu } 32012137Sar4jc@virginia.edu } while (result && !backoffTime && transmitList.size()); 32112137Sar4jc@virginia.edu 32212137Sar4jc@virginia.edu if (transmitList.size() && backoffTime && !inRetry && 32312137Sar4jc@virginia.edu !backoffEvent.scheduled()) { 32412137Sar4jc@virginia.edu DPRINTF(DMA, "-- Scheduling backoff timer for %d\n", 32512137Sar4jc@virginia.edu backoffTime+curTick()); 32612137Sar4jc@virginia.edu device->schedule(backoffEvent, backoffTime + curTick()); 32712137Sar4jc@virginia.edu } 32812137Sar4jc@virginia.edu } else if (state == Enums::atomic) { 32912137Sar4jc@virginia.edu transmitList.pop_front(); 33012137Sar4jc@virginia.edu 33112137Sar4jc@virginia.edu Tick lat; 33212137Sar4jc@virginia.edu DPRINTF(DMA, "--Sending DMA for addr: %#x size: %d\n", 33312137Sar4jc@virginia.edu pkt->req->getPaddr(), pkt->req->getSize()); 33412137Sar4jc@virginia.edu lat = sendAtomic(pkt); 33512137Sar4jc@virginia.edu assert(pkt->senderState); 33612137Sar4jc@virginia.edu DmaReqState *state = dynamic_cast<DmaReqState*>(pkt->senderState); 33712137Sar4jc@virginia.edu assert(state); 33812137Sar4jc@virginia.edu state->numBytes += pkt->req->getSize(); 33912137Sar4jc@virginia.edu 34012137Sar4jc@virginia.edu DPRINTF(DMA, "--Received response for DMA for addr: %#x size: %d nb: %d, tot: %d sched %d\n", 34112137Sar4jc@virginia.edu pkt->req->getPaddr(), pkt->req->getSize(), state->numBytes, 34212137Sar4jc@virginia.edu state->totBytes, 34312137Sar4jc@virginia.edu state->completionEvent ? state->completionEvent->scheduled() : 0 ); 34412137Sar4jc@virginia.edu 34512137Sar4jc@virginia.edu if (state->totBytes == state->numBytes) { 34612137Sar4jc@virginia.edu if (state->completionEvent) { 34712137Sar4jc@virginia.edu assert(!state->completionEvent->scheduled()); 34812137Sar4jc@virginia.edu device->schedule(state->completionEvent, 34912137Sar4jc@virginia.edu curTick() + lat + state->delay); 35012137Sar4jc@virginia.edu } 35112137Sar4jc@virginia.edu delete state; 35212137Sar4jc@virginia.edu delete pkt->req; 35312137Sar4jc@virginia.edu } 35412137Sar4jc@virginia.edu pendingCount--; 35512137Sar4jc@virginia.edu assert(pendingCount >= 0); 35612137Sar4jc@virginia.edu delete pkt; 35712137Sar4jc@virginia.edu 35812137Sar4jc@virginia.edu if (pendingCount == 0 && drainEvent) { 35912137Sar4jc@virginia.edu drainEvent->process(); 36012137Sar4jc@virginia.edu drainEvent = NULL; 36112137Sar4jc@virginia.edu } 36212137Sar4jc@virginia.edu 36312137Sar4jc@virginia.edu } else 36412137Sar4jc@virginia.edu panic("Unknown memory command state."); 36512137Sar4jc@virginia.edu} 36612137Sar4jc@virginia.edu 36712137Sar4jc@virginia.eduDmaDevice::~DmaDevice() 36812137Sar4jc@virginia.edu{ 36912137Sar4jc@virginia.edu} 37012137Sar4jc@virginia.edu 37112137Sar4jc@virginia.edu 37212137Sar4jc@virginia.eduMasterPort & 37312137Sar4jc@virginia.eduDmaDevice::getMasterPort(const std::string &if_name, int idx) 37412137Sar4jc@virginia.edu{ 37512137Sar4jc@virginia.edu if (if_name == "dma") { 37612137Sar4jc@virginia.edu return dmaPort; 37712137Sar4jc@virginia.edu } 37812137Sar4jc@virginia.edu return PioDevice::getMasterPort(if_name, idx); 37912137Sar4jc@virginia.edu} 38012137Sar4jc@virginia.edu 38112137Sar4jc@virginia.edu