bridge.hh (8713:2f1a3e335255) bridge.hh (8851:7e966326ef5b)
1/*
2 * Copyright (c) 2011 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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126 {
127
128 private:
129
130 /** A pointer to the bridge to which this port belongs. */
131 Bridge *bridge;
132
133 /**
1/*
2 * Copyright (c) 2011 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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126 {
127
128 private:
129
130 /** A pointer to the bridge to which this port belongs. */
131 Bridge *bridge;
132
133 /**
134 * Pointer to the master port on the other side of the bridge
134 * Master port on the other side of the bridge
135 * (connected to the other bus).
136 */
135 * (connected to the other bus).
136 */
137 BridgeMasterPort* masterPort;
137 BridgeMasterPort& masterPort;
138
139 /** Minimum request delay though this bridge. */
140 Tick delay;
141
142 /** Min delay to respond with a nack. */
143 Tick nackDelay;
144
145 /** Address ranges to pass through the bridge */

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184 void trySend();
185
186 /**
187 * Private class for scheduling sending of responses from the
188 * response queue.
189 */
190 class SendEvent : public Event
191 {
138
139 /** Minimum request delay though this bridge. */
140 Tick delay;
141
142 /** Min delay to respond with a nack. */
143 Tick nackDelay;
144
145 /** Address ranges to pass through the bridge */

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184 void trySend();
185
186 /**
187 * Private class for scheduling sending of responses from the
188 * response queue.
189 */
190 class SendEvent : public Event
191 {
192 BridgeSlavePort *port;
192 BridgeSlavePort& port;
193
194 public:
193
194 public:
195 SendEvent(BridgeSlavePort *p) : port(p) {}
196 virtual void process() { port->trySend(); }
195 SendEvent(BridgeSlavePort& p) : port(p) {}
196 virtual void process() { port.trySend(); }
197 virtual const char *description() const { return "bridge send"; }
198 };
199
200 /** Send event for the response queue. */
201 SendEvent sendEvent;
202
203 public:
204

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209 * @param _bridge the structural owner
210 * @param _masterPort the master port on the other side of the bridge
211 * @param _delay the delay from seeing a response to sending it
212 * @param _nack_delay the delay from a NACK to sending the response
213 * @param _resp_limit the size of the response queue
214 * @param _ranges a number of address ranges to forward
215 */
216 BridgeSlavePort(const std::string &_name, Bridge *_bridge,
197 virtual const char *description() const { return "bridge send"; }
198 };
199
200 /** Send event for the response queue. */
201 SendEvent sendEvent;
202
203 public:
204

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209 * @param _bridge the structural owner
210 * @param _masterPort the master port on the other side of the bridge
211 * @param _delay the delay from seeing a response to sending it
212 * @param _nack_delay the delay from a NACK to sending the response
213 * @param _resp_limit the size of the response queue
214 * @param _ranges a number of address ranges to forward
215 */
216 BridgeSlavePort(const std::string &_name, Bridge *_bridge,
217 BridgeMasterPort* _masterPort, int _delay,
217 BridgeMasterPort& _masterPort, int _delay,
218 int _nack_delay, int _resp_limit,
219 std::vector<Range<Addr> > _ranges);
220
221 /**
222 * Queue a response packet to be sent out later and also schedule
223 * a send if necessary.
224 *
225 * @param pkt a response to send out after a delay

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267
268 /** A pointer to the bridge to which this port belongs. */
269 Bridge* bridge;
270
271 /**
272 * Pointer to the slave port on the other side of the bridge
273 * (connected to the other bus).
274 */
218 int _nack_delay, int _resp_limit,
219 std::vector<Range<Addr> > _ranges);
220
221 /**
222 * Queue a response packet to be sent out later and also schedule
223 * a send if necessary.
224 *
225 * @param pkt a response to send out after a delay

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267
268 /** A pointer to the bridge to which this port belongs. */
269 Bridge* bridge;
270
271 /**
272 * Pointer to the slave port on the other side of the bridge
273 * (connected to the other bus).
274 */
275 BridgeSlavePort* slavePort;
275 BridgeSlavePort& slavePort;
276
277 /** Minimum delay though this bridge. */
278 Tick delay;
279
280 /**
281 * Request packet queue. Request packets are held in this
282 * queue for a specified delay to model the processing delay
283 * of the bridge.

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298 void trySend();
299
300 /**
301 * Private class for scheduling sending of requests from the
302 * request queue.
303 */
304 class SendEvent : public Event
305 {
276
277 /** Minimum delay though this bridge. */
278 Tick delay;
279
280 /**
281 * Request packet queue. Request packets are held in this
282 * queue for a specified delay to model the processing delay
283 * of the bridge.

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298 void trySend();
299
300 /**
301 * Private class for scheduling sending of requests from the
302 * request queue.
303 */
304 class SendEvent : public Event
305 {
306 BridgeMasterPort *port;
306 BridgeMasterPort& port;
307
308 public:
307
308 public:
309 SendEvent(BridgeMasterPort *p) : port(p) {}
310 virtual void process() { port->trySend(); }
309 SendEvent(BridgeMasterPort& p) : port(p) {}
310 virtual void process() { port.trySend(); }
311 virtual const char *description() const { return "bridge send"; }
312 };
313
314 /** Send event for the request queue. */
315 SendEvent sendEvent;
316
317 public:
318
319 /**
320 * Constructor for the BridgeMasterPort.
321 *
322 * @param _name the port name including the owner
323 * @param _bridge the structural owner
324 * @param _slavePort the slave port on the other side of the bridge
325 * @param _delay the delay from seeing a request to sending it
326 * @param _req_limit the size of the request queue
327 */
328 BridgeMasterPort(const std::string &_name, Bridge *_bridge,
311 virtual const char *description() const { return "bridge send"; }
312 };
313
314 /** Send event for the request queue. */
315 SendEvent sendEvent;
316
317 public:
318
319 /**
320 * Constructor for the BridgeMasterPort.
321 *
322 * @param _name the port name including the owner
323 * @param _bridge the structural owner
324 * @param _slavePort the slave port on the other side of the bridge
325 * @param _delay the delay from seeing a request to sending it
326 * @param _req_limit the size of the request queue
327 */
328 BridgeMasterPort(const std::string &_name, Bridge *_bridge,
329 BridgeSlavePort* _slavePort, int _delay,
329 BridgeSlavePort& _slavePort, int _delay,
330 int _req_limit);
331
332 /**
333 * Is this side blocked from accepting new request packets.
334 *
335 * @return true if the occupied space has reached the set limit
336 */
337 bool reqQueueFull();

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331
332 /**
333 * Is this side blocked from accepting new request packets.
334 *
335 * @return true if the occupied space has reached the set limit
336 */
337 bool reqQueueFull();

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