lsq.hh (4192:7accc6365bb9) lsq.hh (4329:52057dbec096)
1/*
2 * Copyright (c) 2004-2006 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;

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52 /** SMT policy. */
53 enum LSQPolicy {
54 Dynamic,
55 Partitioned,
56 Threshold
57 };
58
59 /** Constructs an LSQ with the given parameters. */
1/*
2 * Copyright (c) 2004-2006 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;

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52 /** SMT policy. */
53 enum LSQPolicy {
54 Dynamic,
55 Partitioned,
56 Threshold
57 };
58
59 /** Constructs an LSQ with the given parameters. */
60 LSQ(Params *params);
60 LSQ(O3CPU *cpu_ptr, IEW *iew_ptr, Params *params);
61
62 /** Returns the name of the LSQ. */
63 std::string name() const;
64
65 /** Registers statistics of each LSQ unit. */
66 void regStats();
67
68 /** Returns dcache port.
69 * @todo: Dcache port needs to be moved up to this level for SMT
70 * to work. For now it just returns the port from one of the
71 * threads.
72 */
73 Port *getDcachePort() { return &dcachePort; }
74
75 /** Sets the pointer to the list of active threads. */
76 void setActiveThreads(std::list<unsigned> *at_ptr);
61
62 /** Returns the name of the LSQ. */
63 std::string name() const;
64
65 /** Registers statistics of each LSQ unit. */
66 void regStats();
67
68 /** Returns dcache port.
69 * @todo: Dcache port needs to be moved up to this level for SMT
70 * to work. For now it just returns the port from one of the
71 * threads.
72 */
73 Port *getDcachePort() { return &dcachePort; }
74
75 /** Sets the pointer to the list of active threads. */
76 void setActiveThreads(std::list<unsigned> *at_ptr);
77 /** Sets the CPU pointer. */
78 void setCPU(O3CPU *cpu_ptr);
79 /** Sets the IEW stage pointer. */
80 void setIEW(IEW *iew_ptr);
81 /** Switches out the LSQ. */
82 void switchOut();
83 /** Takes over execution from another CPU's thread. */
84 void takeOverFrom();
85
86 /** Number of entries needed for the given amount of threads.*/
87 int entryAmount(int num_threads);
88 void removeEntries(unsigned tid);

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278 Fault read(RequestPtr req, T &data, int load_idx);
279
280 /** Executes a store operation, using the store specified at the store
281 * index.
282 */
283 template <class T>
284 Fault write(RequestPtr req, T &data, int store_idx);
285
77 /** Switches out the LSQ. */
78 void switchOut();
79 /** Takes over execution from another CPU's thread. */
80 void takeOverFrom();
81
82 /** Number of entries needed for the given amount of threads.*/
83 int entryAmount(int num_threads);
84 void removeEntries(unsigned tid);

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274 Fault read(RequestPtr req, T &data, int load_idx);
275
276 /** Executes a store operation, using the store specified at the store
277 * index.
278 */
279 template <class T>
280 Fault write(RequestPtr req, T &data, int store_idx);
281
282 /** The CPU pointer. */
283 O3CPU *cpu;
284
285 /** The IEW stage pointer. */
286 IEW *iewStage;
287
286 /** DcachePort class for this LSQ. Handles doing the
287 * communication with the cache/memory.
288 */
289 class DcachePort : public Port
290 {
291 protected:
292 /** Pointer to LSQ. */
293 LSQ *lsq;
294
295 public:
296 /** Default constructor. */
297 DcachePort(LSQ *_lsq)
288 /** DcachePort class for this LSQ. Handles doing the
289 * communication with the cache/memory.
290 */
291 class DcachePort : public Port
292 {
293 protected:
294 /** Pointer to LSQ. */
295 LSQ *lsq;
296
297 public:
298 /** Default constructor. */
299 DcachePort(LSQ *_lsq)
298 : lsq(_lsq)
300 : Port(_lsq->name() + "-dport"), lsq(_lsq)
299 { }
300
301 bool snoopRangeSent;
302
303 virtual void setPeer(Port *port);
304
305 protected:
306 /** Atomic version of receive. Panics. */

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336
337 protected:
338 /** The LSQ policy for SMT mode. */
339 LSQPolicy lsqPolicy;
340
341 /** The LSQ units for individual threads. */
342 LSQUnit thread[Impl::MaxThreads];
343
301 { }
302
303 bool snoopRangeSent;
304
305 virtual void setPeer(Port *port);
306
307 protected:
308 /** Atomic version of receive. Panics. */

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338
339 protected:
340 /** The LSQ policy for SMT mode. */
341 LSQPolicy lsqPolicy;
342
343 /** The LSQ units for individual threads. */
344 LSQUnit thread[Impl::MaxThreads];
345
344 /** The CPU pointer. */
345 O3CPU *cpu;
346
347 /** The IEW stage pointer. */
348 IEW *iewStage;
349
350 /** List of Active Threads in System. */
351 std::list<unsigned> *activeThreads;
352
353 /** Total Size of LQ Entries. */
354 unsigned LQEntries;
355 /** Total Size of SQ Entries. */
356 unsigned SQEntries;
357

--- 35 unchanged lines hidden --- 		346 /** List of Active Threads in System. */
347 std::list<unsigned> *activeThreads;
348
349 /** Total Size of LQ Entries. */
350 unsigned LQEntries;
351 /** Total Size of SQ Entries. */
352 unsigned SQEntries;
353

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