1/*
2 * Copyright (c) 2002-2005 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Ron Dreslinski
29 * Steve Reinhardt
30 * Ali Saidi
31 */
32
33/**
34 * @file
35 * Declaration of a request, the overall memory request consisting of
36 the parts of the request that are persistent throughout the transaction.
37 */
38
39#ifndef __MEM_REQUEST_HH__
40#define __MEM_REQUEST_HH__
41
42#include <cassert>
43
44#include "base/fast_alloc.hh"
45#include "base/flags.hh"
46#include "base/misc.hh"
47#include "base/types.hh"
48#include "sim/core.hh"
49
50class Request;
51
52typedef Request* RequestPtr;
53
54class Request : public FastAlloc
55{
56 public:
57 typedef uint32_t FlagsType;
58 typedef ::Flags<FlagsType> Flags;
59
60 /** ASI information for this request if it exists. */
61 static const FlagsType ASI_BITS = 0x000000FF;
62 /** The request was an instruction fetch. */
63 static const FlagsType INST_FETCH = 0x00000100;
64 /** The virtual address is also the physical address. */
65 static const FlagsType PHYSICAL = 0x00000200;
66 /** The request is an ALPHA VPTE pal access (hw_ld). */
67 static const FlagsType VPTE = 0x00000400;
68 /** Use the alternate mode bits in ALPHA. */
69 static const FlagsType ALTMODE = 0x00000800;
70 /** The request is to an uncacheable address. */
71 static const FlagsType UNCACHEABLE = 0x00001000;
72 /** This request is to a memory mapped register. */
73 static const FlagsType MMAPED_IPR = 0x00002000;
74
75 /** The request should ignore unaligned access faults */
76 static const FlagsType NO_ALIGN_FAULT = 0x00020000;
77 /** The request should ignore unaligned access faults */
78 static const FlagsType NO_HALF_WORD_ALIGN_FAULT = 0x00040000;
79 /** The request should not cause a memory access. */
80 static const FlagsType NO_ACCESS = 0x00080000;
81 /** This request will lock or unlock the accessed memory. When used with
82 * a load, the access locks the particular chunk of memory. When used
83 * with a store, it unlocks. The rule is that locked accesses have to be
84 * made up of a locked load, some operation on the data, and then a locked
85 * store.
86 */
87 static const FlagsType LOCKED = 0x00100000;
88 /** The request is a Load locked/store conditional. */
89 static const FlagsType LLSC = 0x00200000;
90 /** This request is for a memory swap. */
91 static const FlagsType MEM_SWAP = 0x00400000;
92 static const FlagsType MEM_SWAP_COND = 0x00800000;
93
94 /** The request is a prefetch. */
95 static const FlagsType PREFETCH = 0x01000000;
96 /** The request should be prefetched into the exclusive state. */
97 static const FlagsType PF_EXCLUSIVE = 0x02000000;
98 /** The request should be marked as LRU. */
99 static const FlagsType EVICT_NEXT = 0x04000000;
100
101 /** These flags are *not* cleared when a Request object is reused
102 (assigned a new address). */
103 static const FlagsType STICKY_FLAGS = INST_FETCH;
104
105 private:
106 typedef uint8_t PrivateFlagsType;
107 typedef ::Flags<PrivateFlagsType> PrivateFlags;
108
109 /** Whether or not the size is valid. */
110 static const PrivateFlagsType VALID_SIZE = 0x00000001;
111 /** Whether or not paddr is valid (has been written yet). */
112 static const PrivateFlagsType VALID_PADDR = 0x00000002;
113 /** Whether or not the vaddr & asid are valid. */
114 static const PrivateFlagsType VALID_VADDR = 0x00000004;
115 /** Whether or not the pc is valid. */
116 static const PrivateFlagsType VALID_PC = 0x00000010;
117 /** Whether or not the context ID is valid. */
118 static const PrivateFlagsType VALID_CONTEXT_ID = 0x00000020;
119 static const PrivateFlagsType VALID_THREAD_ID = 0x00000040;
120 /** Whether or not the sc result is valid. */
121 static const PrivateFlagsType VALID_EXTRA_DATA = 0x00000080;
122
123 /** These flags are *not* cleared when a Request object is reused
124 (assigned a new address). */
125 static const PrivateFlagsType STICKY_PRIVATE_FLAGS =
126 VALID_CONTEXT_ID | VALID_THREAD_ID;
127
128 private:
129 /**
130 * The physical address of the request. Valid only if validPaddr
131 * is set.
132 */
133 Addr _paddr;
134
135 /**
136 * The size of the request. This field must be set when vaddr or
137 * paddr is written via setVirt() or setPhys(), so it is always
138 * valid as long as one of the address fields is valid.
139 */
140 int _size;
141
142 /** Flag structure for the request. */
143 Flags _flags;
144
145 /** Private flags for field validity checking. */
146 PrivateFlags privateFlags;
147
148 /**
149 * The time this request was started. Used to calculate
150 * latencies. This field is set to curTick any time paddr or vaddr
151 * is written.
152 */
153 Tick _time;
154
155 /** The address space ID. */
156 int _asid;
157
158 /** The virtual address of the request. */
159 Addr _vaddr;
160
161 /**
162 * Extra data for the request, such as the return value of
163 * store conditional or the compare value for a CAS. */
164 uint64_t _extraData;
165
166 /** The context ID (for statistics, typically). */
167 int _contextId;
168 /** The thread ID (id within this CPU) */
169 int _threadId;
170
171 /** program counter of initiating access; for tracing/debugging */
172 Addr _pc;
173
174 public:
175 /** Minimal constructor. No fields are initialized.
176 * (Note that _flags and privateFlags are cleared by Flags
177 * default constructor.)
178 */
179 Request()
180 {}
181
182 /**
183 * Constructor for physical (e.g. device) requests. Initializes
184 * just physical address, size, flags, and timestamp (to curTick).
185 * These fields are adequate to perform a request.
186 */
187 Request(Addr paddr, int size, Flags flags)
188 {
189 setPhys(paddr, size, flags);
190 }
191
192 Request(Addr paddr, int size, Flags flags, Tick time)
193 {
194 setPhys(paddr, size, flags, time);
195 }
196
| 1/*
2 * Copyright (c) 2002-2005 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Ron Dreslinski
29 * Steve Reinhardt
30 * Ali Saidi
31 */
32
33/**
34 * @file
35 * Declaration of a request, the overall memory request consisting of
36 the parts of the request that are persistent throughout the transaction.
37 */
38
39#ifndef __MEM_REQUEST_HH__
40#define __MEM_REQUEST_HH__
41
42#include <cassert>
43
44#include "base/fast_alloc.hh"
45#include "base/flags.hh"
46#include "base/misc.hh"
47#include "base/types.hh"
48#include "sim/core.hh"
49
50class Request;
51
52typedef Request* RequestPtr;
53
54class Request : public FastAlloc
55{
56 public:
57 typedef uint32_t FlagsType;
58 typedef ::Flags<FlagsType> Flags;
59
60 /** ASI information for this request if it exists. */
61 static const FlagsType ASI_BITS = 0x000000FF;
62 /** The request was an instruction fetch. */
63 static const FlagsType INST_FETCH = 0x00000100;
64 /** The virtual address is also the physical address. */
65 static const FlagsType PHYSICAL = 0x00000200;
66 /** The request is an ALPHA VPTE pal access (hw_ld). */
67 static const FlagsType VPTE = 0x00000400;
68 /** Use the alternate mode bits in ALPHA. */
69 static const FlagsType ALTMODE = 0x00000800;
70 /** The request is to an uncacheable address. */
71 static const FlagsType UNCACHEABLE = 0x00001000;
72 /** This request is to a memory mapped register. */
73 static const FlagsType MMAPED_IPR = 0x00002000;
74
75 /** The request should ignore unaligned access faults */
76 static const FlagsType NO_ALIGN_FAULT = 0x00020000;
77 /** The request should ignore unaligned access faults */
78 static const FlagsType NO_HALF_WORD_ALIGN_FAULT = 0x00040000;
79 /** The request should not cause a memory access. */
80 static const FlagsType NO_ACCESS = 0x00080000;
81 /** This request will lock or unlock the accessed memory. When used with
82 * a load, the access locks the particular chunk of memory. When used
83 * with a store, it unlocks. The rule is that locked accesses have to be
84 * made up of a locked load, some operation on the data, and then a locked
85 * store.
86 */
87 static const FlagsType LOCKED = 0x00100000;
88 /** The request is a Load locked/store conditional. */
89 static const FlagsType LLSC = 0x00200000;
90 /** This request is for a memory swap. */
91 static const FlagsType MEM_SWAP = 0x00400000;
92 static const FlagsType MEM_SWAP_COND = 0x00800000;
93
94 /** The request is a prefetch. */
95 static const FlagsType PREFETCH = 0x01000000;
96 /** The request should be prefetched into the exclusive state. */
97 static const FlagsType PF_EXCLUSIVE = 0x02000000;
98 /** The request should be marked as LRU. */
99 static const FlagsType EVICT_NEXT = 0x04000000;
100
101 /** These flags are *not* cleared when a Request object is reused
102 (assigned a new address). */
103 static const FlagsType STICKY_FLAGS = INST_FETCH;
104
105 private:
106 typedef uint8_t PrivateFlagsType;
107 typedef ::Flags<PrivateFlagsType> PrivateFlags;
108
109 /** Whether or not the size is valid. */
110 static const PrivateFlagsType VALID_SIZE = 0x00000001;
111 /** Whether or not paddr is valid (has been written yet). */
112 static const PrivateFlagsType VALID_PADDR = 0x00000002;
113 /** Whether or not the vaddr & asid are valid. */
114 static const PrivateFlagsType VALID_VADDR = 0x00000004;
115 /** Whether or not the pc is valid. */
116 static const PrivateFlagsType VALID_PC = 0x00000010;
117 /** Whether or not the context ID is valid. */
118 static const PrivateFlagsType VALID_CONTEXT_ID = 0x00000020;
119 static const PrivateFlagsType VALID_THREAD_ID = 0x00000040;
120 /** Whether or not the sc result is valid. */
121 static const PrivateFlagsType VALID_EXTRA_DATA = 0x00000080;
122
123 /** These flags are *not* cleared when a Request object is reused
124 (assigned a new address). */
125 static const PrivateFlagsType STICKY_PRIVATE_FLAGS =
126 VALID_CONTEXT_ID | VALID_THREAD_ID;
127
128 private:
129 /**
130 * The physical address of the request. Valid only if validPaddr
131 * is set.
132 */
133 Addr _paddr;
134
135 /**
136 * The size of the request. This field must be set when vaddr or
137 * paddr is written via setVirt() or setPhys(), so it is always
138 * valid as long as one of the address fields is valid.
139 */
140 int _size;
141
142 /** Flag structure for the request. */
143 Flags _flags;
144
145 /** Private flags for field validity checking. */
146 PrivateFlags privateFlags;
147
148 /**
149 * The time this request was started. Used to calculate
150 * latencies. This field is set to curTick any time paddr or vaddr
151 * is written.
152 */
153 Tick _time;
154
155 /** The address space ID. */
156 int _asid;
157
158 /** The virtual address of the request. */
159 Addr _vaddr;
160
161 /**
162 * Extra data for the request, such as the return value of
163 * store conditional or the compare value for a CAS. */
164 uint64_t _extraData;
165
166 /** The context ID (for statistics, typically). */
167 int _contextId;
168 /** The thread ID (id within this CPU) */
169 int _threadId;
170
171 /** program counter of initiating access; for tracing/debugging */
172 Addr _pc;
173
174 public:
175 /** Minimal constructor. No fields are initialized.
176 * (Note that _flags and privateFlags are cleared by Flags
177 * default constructor.)
178 */
179 Request()
180 {}
181
182 /**
183 * Constructor for physical (e.g. device) requests. Initializes
184 * just physical address, size, flags, and timestamp (to curTick).
185 * These fields are adequate to perform a request.
186 */
187 Request(Addr paddr, int size, Flags flags)
188 {
189 setPhys(paddr, size, flags);
190 }
191
192 Request(Addr paddr, int size, Flags flags, Tick time)
193 {
194 setPhys(paddr, size, flags, time);
195 }
196
|
197 Request(int asid, Addr vaddr, int size, Flags flags, Addr pc,
198 int cid, ThreadID tid)
199 {
200 setVirt(asid, vaddr, size, flags, pc);
201 setThreadContext(cid, tid);
202 }
203
204 ~Request() {} // for FastAlloc
205
206 /**
207 * Set up CPU and thread numbers.
208 */
209 void
210 setThreadContext(int context_id, ThreadID tid)
211 {
212 _contextId = context_id;
213 _threadId = tid;
214 privateFlags.set(VALID_CONTEXT_ID|VALID_THREAD_ID);
215 }
216
217 /**
218 * Set up a physical (e.g. device) request in a previously
219 * allocated Request object.
220 */
221 void
222 setPhys(Addr paddr, int size, Flags flags, Tick time)
223 {
224 assert(size >= 0);
225 _paddr = paddr;
226 _size = size;
227 _time = time;
228
229 _flags.clear(~STICKY_FLAGS);
230 _flags.set(flags);
231 privateFlags.clear(~STICKY_PRIVATE_FLAGS);
232 privateFlags.set(VALID_PADDR|VALID_SIZE);
233 }
234
235 void
236 setPhys(Addr paddr, int size, Flags flags)
237 {
238 setPhys(paddr, size, flags, curTick);
239 }
240
241 /**
242 * Set up a virtual (e.g., CPU) request in a previously
243 * allocated Request object.
244 */
245 void
246 setVirt(int asid, Addr vaddr, int size, Flags flags, Addr pc)
247 {
248 assert(size >= 0);
249 _asid = asid;
250 _vaddr = vaddr;
251 _size = size;
252 _pc = pc;
253 _time = curTick;
254
255 _flags.clear(~STICKY_FLAGS);
256 _flags.set(flags);
257 privateFlags.clear(~STICKY_PRIVATE_FLAGS);
258 privateFlags.set(VALID_VADDR|VALID_SIZE|VALID_PC);
259 }
260
261 /**
262 * Set just the physical address. This should only be used to
263 * record the result of a translation, and thus the vaddr must be
264 * valid before this method is called. Otherwise, use setPhys()
265 * to guarantee that the size and flags are also set.
266 */
267 void
268 setPaddr(Addr paddr)
269 {
270 assert(privateFlags.isSet(VALID_VADDR));
271 _paddr = paddr;
272 privateFlags.set(VALID_PADDR);
273 }
274
275 /**
276 * Generate two requests as if this request had been split into two
277 * pieces. The original request can't have been translated already.
278 */
279 void splitOnVaddr(Addr split_addr, RequestPtr &req1, RequestPtr &req2)
280 {
281 assert(privateFlags.isSet(VALID_VADDR));
282 assert(privateFlags.noneSet(VALID_PADDR));
283 assert(split_addr > _vaddr && split_addr < _vaddr + _size);
284 req1 = new Request;
285 *req1 = *this;
286 req2 = new Request;
287 *req2 = *this;
288 req1->_size = split_addr - _vaddr;
289 req2->_vaddr = split_addr;
290 req2->_size = _size - req1->_size;
291 }
292
293 /**
294 * Accessor for paddr.
295 */
296 bool
297 hasPaddr()
298 {
299 return privateFlags.isSet(VALID_PADDR);
300 }
301
302 Addr
303 getPaddr()
304 {
305 assert(privateFlags.isSet(VALID_PADDR));
306 return _paddr;
307 }
308
309 /**
310 * Accessor for size.
311 */
312 bool
313 hasSize()
314 {
315 return privateFlags.isSet(VALID_SIZE);
316 }
317
318 int
319 getSize()
320 {
321 assert(privateFlags.isSet(VALID_SIZE));
322 return _size;
323 }
324
325 /** Accessor for time. */
326 Tick
327 time() const
328 {
329 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
330 return _time;
331 }
332
333 void
334 time(Tick time)
335 {
336 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
337 _time = time;
338 }
339
340 /** Accessor for flags. */
341 Flags
342 getFlags()
343 {
344 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
345 return _flags;
346 }
347
348 /** Note that unlike other accessors, this function sets *specific
349 flags* (ORs them in); it does not assign its argument to the
350 _flags field. Thus this method should rightly be called
351 setFlags() and not just flags(). */
352 void
353 setFlags(Flags flags)
354 {
355 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
356 _flags.set(flags);
357 }
358
359 /** Accessor function for vaddr.*/
360 Addr
361 getVaddr()
362 {
363 assert(privateFlags.isSet(VALID_VADDR));
364 return _vaddr;
365 }
366
367 /** Accessor function for asid.*/
368 int
369 getAsid()
370 {
371 assert(privateFlags.isSet(VALID_VADDR));
372 return _asid;
373 }
374
375 /** Accessor function for asi.*/
376 uint8_t
377 getAsi()
378 {
379 assert(privateFlags.isSet(VALID_VADDR));
380 return _flags & ASI_BITS;
381 }
382
383 /** Accessor function to check if sc result is valid. */
384 bool
385 extraDataValid()
386 {
387 return privateFlags.isSet(VALID_EXTRA_DATA);
388 }
389
390 /** Accessor function for store conditional return value.*/
391 uint64_t
392 getExtraData() const
393 {
394 assert(privateFlags.isSet(VALID_EXTRA_DATA));
395 return _extraData;
396 }
397
398 /** Accessor function for store conditional return value.*/
399 void
400 setExtraData(uint64_t extraData)
401 {
402 _extraData = extraData;
403 privateFlags.set(VALID_EXTRA_DATA);
404 }
405
406 bool
407 hasContextId() const
408 {
409 return privateFlags.isSet(VALID_CONTEXT_ID);
410 }
411
412 /** Accessor function for context ID.*/
413 int
414 contextId() const
415 {
416 assert(privateFlags.isSet(VALID_CONTEXT_ID));
417 return _contextId;
418 }
419
420 /** Accessor function for thread ID. */
421 int
422 threadId() const
423 {
424 assert(privateFlags.isSet(VALID_THREAD_ID));
425 return _threadId;
426 }
427
428 bool
429 hasPC() const
430 {
431 return privateFlags.isSet(VALID_PC);
432 }
433
434 /** Accessor function for pc.*/
435 Addr
436 getPC() const
437 {
438 assert(privateFlags.isSet(VALID_PC));
439 return _pc;
440 }
441
442 /** Accessor functions for flags. Note that these are for testing
443 only; setting flags should be done via setFlags(). */
444 bool isUncacheable() const { return _flags.isSet(UNCACHEABLE); }
445 bool isInstFetch() const { return _flags.isSet(INST_FETCH); }
446 bool isPrefetch() const { return _flags.isSet(PREFETCH); }
447 bool isLLSC() const { return _flags.isSet(LLSC); }
448 bool isLocked() const { return _flags.isSet(LOCKED); }
449 bool isSwap() const { return _flags.isSet(MEM_SWAP|MEM_SWAP_COND); }
450 bool isCondSwap() const { return _flags.isSet(MEM_SWAP_COND); }
451 bool isMmapedIpr() const { return _flags.isSet(MMAPED_IPR); }
452
453 bool
454 isMisaligned() const
455 {
456 if (_flags.isSet(NO_ALIGN_FAULT))
457 return false;
458
459 if ((_vaddr & 0x1))
460 return true;
461
462 if (_flags.isSet(NO_HALF_WORD_ALIGN_FAULT))
463 return false;
464
465 if ((_vaddr & 0x2))
466 return true;
467
468 return false;
469 }
470};
471
472#endif // __MEM_REQUEST_HH__
| 204 Request(int asid, Addr vaddr, int size, Flags flags, Addr pc,
205 int cid, ThreadID tid)
206 {
207 setVirt(asid, vaddr, size, flags, pc);
208 setThreadContext(cid, tid);
209 }
210
211 ~Request() {} // for FastAlloc
212
213 /**
214 * Set up CPU and thread numbers.
215 */
216 void
217 setThreadContext(int context_id, ThreadID tid)
218 {
219 _contextId = context_id;
220 _threadId = tid;
221 privateFlags.set(VALID_CONTEXT_ID|VALID_THREAD_ID);
222 }
223
224 /**
225 * Set up a physical (e.g. device) request in a previously
226 * allocated Request object.
227 */
228 void
229 setPhys(Addr paddr, int size, Flags flags, Tick time)
230 {
231 assert(size >= 0);
232 _paddr = paddr;
233 _size = size;
234 _time = time;
235
236 _flags.clear(~STICKY_FLAGS);
237 _flags.set(flags);
238 privateFlags.clear(~STICKY_PRIVATE_FLAGS);
239 privateFlags.set(VALID_PADDR|VALID_SIZE);
240 }
241
242 void
243 setPhys(Addr paddr, int size, Flags flags)
244 {
245 setPhys(paddr, size, flags, curTick);
246 }
247
248 /**
249 * Set up a virtual (e.g., CPU) request in a previously
250 * allocated Request object.
251 */
252 void
253 setVirt(int asid, Addr vaddr, int size, Flags flags, Addr pc)
254 {
255 assert(size >= 0);
256 _asid = asid;
257 _vaddr = vaddr;
258 _size = size;
259 _pc = pc;
260 _time = curTick;
261
262 _flags.clear(~STICKY_FLAGS);
263 _flags.set(flags);
264 privateFlags.clear(~STICKY_PRIVATE_FLAGS);
265 privateFlags.set(VALID_VADDR|VALID_SIZE|VALID_PC);
266 }
267
268 /**
269 * Set just the physical address. This should only be used to
270 * record the result of a translation, and thus the vaddr must be
271 * valid before this method is called. Otherwise, use setPhys()
272 * to guarantee that the size and flags are also set.
273 */
274 void
275 setPaddr(Addr paddr)
276 {
277 assert(privateFlags.isSet(VALID_VADDR));
278 _paddr = paddr;
279 privateFlags.set(VALID_PADDR);
280 }
281
282 /**
283 * Generate two requests as if this request had been split into two
284 * pieces. The original request can't have been translated already.
285 */
286 void splitOnVaddr(Addr split_addr, RequestPtr &req1, RequestPtr &req2)
287 {
288 assert(privateFlags.isSet(VALID_VADDR));
289 assert(privateFlags.noneSet(VALID_PADDR));
290 assert(split_addr > _vaddr && split_addr < _vaddr + _size);
291 req1 = new Request;
292 *req1 = *this;
293 req2 = new Request;
294 *req2 = *this;
295 req1->_size = split_addr - _vaddr;
296 req2->_vaddr = split_addr;
297 req2->_size = _size - req1->_size;
298 }
299
300 /**
301 * Accessor for paddr.
302 */
303 bool
304 hasPaddr()
305 {
306 return privateFlags.isSet(VALID_PADDR);
307 }
308
309 Addr
310 getPaddr()
311 {
312 assert(privateFlags.isSet(VALID_PADDR));
313 return _paddr;
314 }
315
316 /**
317 * Accessor for size.
318 */
319 bool
320 hasSize()
321 {
322 return privateFlags.isSet(VALID_SIZE);
323 }
324
325 int
326 getSize()
327 {
328 assert(privateFlags.isSet(VALID_SIZE));
329 return _size;
330 }
331
332 /** Accessor for time. */
333 Tick
334 time() const
335 {
336 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
337 return _time;
338 }
339
340 void
341 time(Tick time)
342 {
343 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
344 _time = time;
345 }
346
347 /** Accessor for flags. */
348 Flags
349 getFlags()
350 {
351 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
352 return _flags;
353 }
354
355 /** Note that unlike other accessors, this function sets *specific
356 flags* (ORs them in); it does not assign its argument to the
357 _flags field. Thus this method should rightly be called
358 setFlags() and not just flags(). */
359 void
360 setFlags(Flags flags)
361 {
362 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR));
363 _flags.set(flags);
364 }
365
366 /** Accessor function for vaddr.*/
367 Addr
368 getVaddr()
369 {
370 assert(privateFlags.isSet(VALID_VADDR));
371 return _vaddr;
372 }
373
374 /** Accessor function for asid.*/
375 int
376 getAsid()
377 {
378 assert(privateFlags.isSet(VALID_VADDR));
379 return _asid;
380 }
381
382 /** Accessor function for asi.*/
383 uint8_t
384 getAsi()
385 {
386 assert(privateFlags.isSet(VALID_VADDR));
387 return _flags & ASI_BITS;
388 }
389
390 /** Accessor function to check if sc result is valid. */
391 bool
392 extraDataValid()
393 {
394 return privateFlags.isSet(VALID_EXTRA_DATA);
395 }
396
397 /** Accessor function for store conditional return value.*/
398 uint64_t
399 getExtraData() const
400 {
401 assert(privateFlags.isSet(VALID_EXTRA_DATA));
402 return _extraData;
403 }
404
405 /** Accessor function for store conditional return value.*/
406 void
407 setExtraData(uint64_t extraData)
408 {
409 _extraData = extraData;
410 privateFlags.set(VALID_EXTRA_DATA);
411 }
412
413 bool
414 hasContextId() const
415 {
416 return privateFlags.isSet(VALID_CONTEXT_ID);
417 }
418
419 /** Accessor function for context ID.*/
420 int
421 contextId() const
422 {
423 assert(privateFlags.isSet(VALID_CONTEXT_ID));
424 return _contextId;
425 }
426
427 /** Accessor function for thread ID. */
428 int
429 threadId() const
430 {
431 assert(privateFlags.isSet(VALID_THREAD_ID));
432 return _threadId;
433 }
434
435 bool
436 hasPC() const
437 {
438 return privateFlags.isSet(VALID_PC);
439 }
440
441 /** Accessor function for pc.*/
442 Addr
443 getPC() const
444 {
445 assert(privateFlags.isSet(VALID_PC));
446 return _pc;
447 }
448
449 /** Accessor functions for flags. Note that these are for testing
450 only; setting flags should be done via setFlags(). */
451 bool isUncacheable() const { return _flags.isSet(UNCACHEABLE); }
452 bool isInstFetch() const { return _flags.isSet(INST_FETCH); }
453 bool isPrefetch() const { return _flags.isSet(PREFETCH); }
454 bool isLLSC() const { return _flags.isSet(LLSC); }
455 bool isLocked() const { return _flags.isSet(LOCKED); }
456 bool isSwap() const { return _flags.isSet(MEM_SWAP|MEM_SWAP_COND); }
457 bool isCondSwap() const { return _flags.isSet(MEM_SWAP_COND); }
458 bool isMmapedIpr() const { return _flags.isSet(MMAPED_IPR); }
459
460 bool
461 isMisaligned() const
462 {
463 if (_flags.isSet(NO_ALIGN_FAULT))
464 return false;
465
466 if ((_vaddr & 0x1))
467 return true;
468
469 if (_flags.isSet(NO_HALF_WORD_ALIGN_FAULT))
470 return false;
471
472 if ((_vaddr & 0x2))
473 return true;
474
475 return false;
476 }
477};
478
479#endif // __MEM_REQUEST_HH__
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