1/*
2 * Copyright (c) 2012 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

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138
139 /** Maximum time that device should back off for after failed sendTiming */
140 Tick maxBackoffDelay;
141
142 /** If the port is currently waiting for a retry before it can send whatever
143 * it is that it's sending. */
144 bool inRetry;
145
146 virtual bool recvTimingResp(PacketPtr pkt);
147
148 virtual void recvRetry() ;
149
150 void queueDma(PacketPtr pkt, bool front = false);
151 void sendDma();
152
153 /** event to give us a kick every time we backoff time is reached. */
154 EventWrapper<DmaPort, &DmaPort::sendDma> backoffEvent;
155
156 public:
157 DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff);
158
159 void dmaAction(Packet::Command cmd, Addr addr, int size, Event *event,
160 uint8_t *data, Tick delay, Request::Flags flag = 0);
161
162 bool dmaPending() { return pendingCount > 0; }
163
164 unsigned cacheBlockSize() const { return peerBlockSize(); }
165 unsigned int drain(Event *de);

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