request.hh (6103:549511187a5c) | request.hh (6104:ca0915f8d86d) |
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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; --- 39 unchanged lines hidden (view full) --- 48#include "sim/core.hh" 49 50class Request; 51 52typedef Request* RequestPtr; 53 54class Request : public FastAlloc 55{ | 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; --- 39 unchanged lines hidden (view full) --- 48#include "sim/core.hh" 49 50class Request; 51 52typedef Request* RequestPtr; 53 54class Request : public FastAlloc 55{ |
56 friend class Packet; 57 | |
58 public: 59 typedef uint32_t FlagsType; 60 typedef ::Flags<FlagsType> Flags; 61 62 /** ASI information for this request if it exists. */ 63 static const FlagsType ASI_BITS = 0x000000FF; 64 /** The request is a Load locked/store conditional. */ 65 static const FlagsType LLSC = 0x00000100; --- 27 unchanged lines hidden (view full) --- 93 /** This request is for a memory swap. */ 94 static const FlagsType MEM_SWAP = 0x00100000; 95 static const FlagsType MEM_SWAP_COND = 0x00200000; 96 /** The request should ignore unaligned access faults */ 97 static const FlagsType NO_HALF_WORD_ALIGN_FAULT = 0x00400000; 98 /** This request is to a memory mapped register. */ 99 static const FlagsType MMAPED_IPR = 0x00800000; 100 | 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 is a Load locked/store conditional. */ 63 static const FlagsType LLSC = 0x00000100; --- 27 unchanged lines hidden (view full) --- 91 /** This request is for a memory swap. */ 92 static const FlagsType MEM_SWAP = 0x00100000; 93 static const FlagsType MEM_SWAP_COND = 0x00200000; 94 /** The request should ignore unaligned access faults */ 95 static const FlagsType NO_HALF_WORD_ALIGN_FAULT = 0x00400000; 96 /** This request is to a memory mapped register. */ 97 static const FlagsType MMAPED_IPR = 0x00800000; 98 |
99 /** These flags are *not* cleared when a Request object is reused 100 (assigned a new address). */ 101 static const FlagsType STICKY_FLAGS = INST_READ; 102 |
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101 private: | 103 private: |
102 static const FlagsType PUBLIC_FLAGS = 0x00FFFFFF; 103 static const FlagsType PRIVATE_FLAGS = 0xFF000000; | 104 typedef uint8_t PrivateFlagsType; 105 typedef ::Flags<PrivateFlagsType> PrivateFlags; |
104 105 /** Whether or not the size is valid. */ | 106 107 /** Whether or not the size is valid. */ |
106 static const FlagsType VALID_SIZE = 0x01000000; | 108 static const PrivateFlagsType VALID_SIZE = 0x00000001; |
107 /** Whether or not paddr is valid (has been written yet). */ | 109 /** Whether or not paddr is valid (has been written yet). */ |
108 static const FlagsType VALID_PADDR = 0x02000000; | 110 static const PrivateFlagsType VALID_PADDR = 0x00000002; |
109 /** Whether or not the vaddr & asid are valid. */ | 111 /** Whether or not the vaddr & asid are valid. */ |
110 static const FlagsType VALID_VADDR = 0x04000000; | 112 static const PrivateFlagsType VALID_VADDR = 0x00000004; |
111 /** Whether or not the pc is valid. */ | 113 /** Whether or not the pc is valid. */ |
112 static const FlagsType VALID_PC = 0x10000000; | 114 static const PrivateFlagsType VALID_PC = 0x00000010; |
113 /** Whether or not the context ID is valid. */ | 115 /** Whether or not the context ID is valid. */ |
114 static const FlagsType VALID_CONTEXT_ID = 0x20000000; 115 static const FlagsType VALID_THREAD_ID = 0x40000000; | 116 static const PrivateFlagsType VALID_CONTEXT_ID = 0x00000020; 117 static const PrivateFlagsType VALID_THREAD_ID = 0x00000040; |
116 /** Whether or not the sc result is valid. */ | 118 /** Whether or not the sc result is valid. */ |
117 static const FlagsType VALID_EXTRA_DATA = 0x80000000; | 119 static const PrivateFlagsType VALID_EXTRA_DATA = 0x00000080; |
118 | 120 |
121 /** These flags are *not* cleared when a Request object is reused 122 (assigned a new address). */ 123 static const PrivateFlagsType STICKY_PRIVATE_FLAGS = 124 VALID_CONTEXT_ID | VALID_THREAD_ID; 125 |
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119 private: 120 /** 121 * The physical address of the request. Valid only if validPaddr 122 * is set. 123 */ 124 Addr paddr; 125 126 /** 127 * The size of the request. This field must be set when vaddr or 128 * paddr is written via setVirt() or setPhys(), so it is always 129 * valid as long as one of the address fields is valid. 130 */ 131 int size; 132 133 /** Flag structure for the request. */ 134 Flags flags; 135 | 126 private: 127 /** 128 * The physical address of the request. Valid only if validPaddr 129 * is set. 130 */ 131 Addr paddr; 132 133 /** 134 * The size of the request. This field must be set when vaddr or 135 * paddr is written via setVirt() or setPhys(), so it is always 136 * valid as long as one of the address fields is valid. 137 */ 138 int size; 139 140 /** Flag structure for the request. */ 141 Flags flags; 142 |
143 /** Private flags for field validity checking. */ 144 PrivateFlags privateFlags; 145 |
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136 /** 137 * The time this request was started. Used to calculate 138 * latencies. This field is set to curTick any time paddr or vaddr 139 * is written. 140 */ 141 Tick time; 142 143 /** The address space ID. */ --- 28 unchanged lines hidden (view full) --- 172 Request(Addr paddr, int size, Flags flags) 173 { 174 setPhys(paddr, size, flags); 175 } 176 177 Request(int asid, Addr vaddr, int size, Flags flags, Addr pc, 178 int cid, int tid) 179 { | 146 /** 147 * The time this request was started. Used to calculate 148 * latencies. This field is set to curTick any time paddr or vaddr 149 * is written. 150 */ 151 Tick time; 152 153 /** The address space ID. */ --- 28 unchanged lines hidden (view full) --- 182 Request(Addr paddr, int size, Flags flags) 183 { 184 setPhys(paddr, size, flags); 185 } 186 187 Request(int asid, Addr vaddr, int size, Flags flags, Addr pc, 188 int cid, int tid) 189 { |
180 setThreadContext(cid, tid); | |
181 setVirt(asid, vaddr, size, flags, pc); | 190 setVirt(asid, vaddr, size, flags, pc); |
191 setThreadContext(cid, tid); |
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182 } 183 184 ~Request() {} // for FastAlloc 185 186 /** 187 * Set up CPU and thread numbers. 188 */ 189 void 190 setThreadContext(int context_id, int thread_id) 191 { 192 _contextId = context_id; 193 _threadId = thread_id; | 192 } 193 194 ~Request() {} // for FastAlloc 195 196 /** 197 * Set up CPU and thread numbers. 198 */ 199 void 200 setThreadContext(int context_id, int thread_id) 201 { 202 _contextId = context_id; 203 _threadId = thread_id; |
194 flags.set(VALID_CONTEXT_ID|VALID_THREAD_ID); | 204 privateFlags.set(VALID_CONTEXT_ID|VALID_THREAD_ID); |
195 } 196 197 /** 198 * Set up a physical (e.g. device) request in a previously 199 * allocated Request object. 200 */ 201 void 202 setPhys(Addr _paddr, int _size, Flags _flags) 203 { 204 assert(_size >= 0); 205 paddr = _paddr; 206 size = _size; 207 time = curTick; 208 | 205 } 206 207 /** 208 * Set up a physical (e.g. device) request in a previously 209 * allocated Request object. 210 */ 211 void 212 setPhys(Addr _paddr, int _size, Flags _flags) 213 { 214 assert(_size >= 0); 215 paddr = _paddr; 216 size = _size; 217 time = curTick; 218 |
209 flags.set(VALID_PADDR|VALID_SIZE); 210 flags.clear(VALID_VADDR|VALID_PC|VALID_EXTRA_DATA|MMAPED_IPR); 211 flags.update(_flags, PUBLIC_FLAGS); | 219 flags.clear(~STICKY_FLAGS); 220 flags.set(_flags); 221 privateFlags.clear(~STICKY_PRIVATE_FLAGS); 222 privateFlags.set(VALID_PADDR|VALID_SIZE); |
212 } 213 214 /** 215 * Set up a virtual (e.g., CPU) request in a previously 216 * allocated Request object. 217 */ 218 void 219 setVirt(int _asid, Addr _vaddr, int _size, Flags _flags, Addr _pc) 220 { 221 assert(_size >= 0); 222 asid = _asid; 223 vaddr = _vaddr; 224 size = _size; | 223 } 224 225 /** 226 * Set up a virtual (e.g., CPU) request in a previously 227 * allocated Request object. 228 */ 229 void 230 setVirt(int _asid, Addr _vaddr, int _size, Flags _flags, Addr _pc) 231 { 232 assert(_size >= 0); 233 asid = _asid; 234 vaddr = _vaddr; 235 size = _size; |
236 flags = _flags; |
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225 pc = _pc; 226 time = curTick; 227 | 237 pc = _pc; 238 time = curTick; 239 |
228 flags.set(VALID_VADDR|VALID_SIZE|VALID_PC); 229 flags.clear(VALID_PADDR|VALID_EXTRA_DATA|MMAPED_IPR); 230 flags.update(_flags, PUBLIC_FLAGS); | 240 flags.clear(~STICKY_FLAGS); 241 flags.set(_flags); 242 privateFlags.clear(~STICKY_PRIVATE_FLAGS); 243 privateFlags.set(VALID_VADDR|VALID_SIZE|VALID_PC); |
231 } 232 233 /** 234 * Set just the physical address. This should only be used to 235 * record the result of a translation, and thus the vaddr must be 236 * valid before this method is called. Otherwise, use setPhys() 237 * to guarantee that the size and flags are also set. 238 */ 239 void 240 setPaddr(Addr _paddr) 241 { | 244 } 245 246 /** 247 * Set just the physical address. This should only be used to 248 * record the result of a translation, and thus the vaddr must be 249 * valid before this method is called. Otherwise, use setPhys() 250 * to guarantee that the size and flags are also set. 251 */ 252 void 253 setPaddr(Addr _paddr) 254 { |
242 assert(flags.isSet(VALID_VADDR)); | 255 assert(privateFlags.isSet(VALID_VADDR)); |
243 paddr = _paddr; | 256 paddr = _paddr; |
244 flags.set(VALID_PADDR); | 257 privateFlags.set(VALID_PADDR); |
245 } 246 247 /** 248 * Generate two requests as if this request had been split into two 249 * pieces. The original request can't have been translated already. 250 */ 251 void splitOnVaddr(Addr split_addr, RequestPtr &req1, RequestPtr &req2) 252 { | 258 } 259 260 /** 261 * Generate two requests as if this request had been split into two 262 * pieces. The original request can't have been translated already. 263 */ 264 void splitOnVaddr(Addr split_addr, RequestPtr &req1, RequestPtr &req2) 265 { |
253 assert(flags.isSet(VALID_VADDR)); 254 assert(flags.noneSet(VALID_PADDR)); | 266 assert(privateFlags.isSet(VALID_VADDR)); 267 assert(privateFlags.noneSet(VALID_PADDR)); |
255 assert(split_addr > vaddr && split_addr < vaddr + size); 256 req1 = new Request; 257 *req1 = *this; 258 req2 = new Request; 259 *req2 = *this; 260 req1->size = split_addr - vaddr; 261 req2->vaddr = split_addr; 262 req2->size = size - req1->size; 263 } 264 265 /** 266 * Accessor for paddr. 267 */ | 268 assert(split_addr > vaddr && split_addr < vaddr + size); 269 req1 = new Request; 270 *req1 = *this; 271 req2 = new Request; 272 *req2 = *this; 273 req1->size = split_addr - vaddr; 274 req2->vaddr = split_addr; 275 req2->size = size - req1->size; 276 } 277 278 /** 279 * Accessor for paddr. 280 */ |
281 bool 282 hasPaddr() 283 { 284 return privateFlags.isSet(VALID_PADDR); 285 } 286 |
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268 Addr 269 getPaddr() 270 { | 287 Addr 288 getPaddr() 289 { |
271 assert(flags.isSet(VALID_PADDR)); | 290 assert(privateFlags.isSet(VALID_PADDR)); |
272 return paddr; 273 } 274 275 /** 276 * Accessor for size. 277 */ | 291 return paddr; 292 } 293 294 /** 295 * Accessor for size. 296 */ |
297 bool 298 hasSize() 299 { 300 return privateFlags.isSet(VALID_SIZE); 301 } 302 |
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278 int 279 getSize() 280 { | 303 int 304 getSize() 305 { |
281 assert(flags.isSet(VALID_SIZE)); | 306 assert(privateFlags.isSet(VALID_SIZE)); |
282 return size; 283 } 284 285 /** Accessor for time. */ 286 Tick 287 getTime() 288 { | 307 return size; 308 } 309 310 /** Accessor for time. */ 311 Tick 312 getTime() 313 { |
289 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); | 314 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR)); |
290 return time; 291 } 292 | 315 return time; 316 } 317 |
293 void 294 setTime(Tick when) 295 { 296 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 297 time = when; 298 } 299 | |
300 /** Accessor for flags. */ 301 Flags 302 getFlags() 303 { | 318 /** Accessor for flags. */ 319 Flags 320 getFlags() 321 { |
304 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 305 return flags & PUBLIC_FLAGS; | 322 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR)); 323 return flags; |
306 } 307 | 324 } 325 |
308 Flags 309 anyFlags(Flags _flags) 310 { 311 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 312 assert(_flags.noneSet(~PUBLIC_FLAGS)); 313 return flags.isSet(_flags); 314 } 315 316 Flags 317 allFlags(Flags _flags) 318 { 319 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 320 assert(_flags.noneSet(~PUBLIC_FLAGS)); 321 return flags.allSet(_flags); 322 } 323 324 /** Accessor for flags. */ | |
325 void 326 setFlags(Flags _flags) 327 { | 326 void 327 setFlags(Flags _flags) 328 { |
328 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 329 assert(_flags.noneSet(~PUBLIC_FLAGS)); | 329 assert(privateFlags.isSet(VALID_PADDR|VALID_VADDR)); |
330 flags.set(_flags); 331 } 332 | 330 flags.set(_flags); 331 } 332 |
333 void 334 clearFlags(Flags _flags) 335 { 336 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 337 assert(_flags.noneSet(~PUBLIC_FLAGS)); 338 flags.clear(_flags); 339 } 340 341 void 342 clearFlags() 343 { 344 assert(flags.isSet(VALID_PADDR|VALID_VADDR)); 345 flags.clear(PUBLIC_FLAGS); 346 } 347 | |
348 /** Accessor function for vaddr.*/ 349 Addr 350 getVaddr() 351 { | 333 /** Accessor function for vaddr.*/ 334 Addr 335 getVaddr() 336 { |
352 assert(flags.isSet(VALID_VADDR)); | 337 assert(privateFlags.isSet(VALID_VADDR)); |
353 return vaddr; 354 } 355 356 /** Accessor function for asid.*/ 357 int 358 getAsid() 359 { | 338 return vaddr; 339 } 340 341 /** Accessor function for asid.*/ 342 int 343 getAsid() 344 { |
360 assert(flags.isSet(VALID_VADDR)); | 345 assert(privateFlags.isSet(VALID_VADDR)); |
361 return asid; 362 } 363 364 /** Accessor function for asi.*/ 365 uint8_t 366 getAsi() 367 { | 346 return asid; 347 } 348 349 /** Accessor function for asi.*/ 350 uint8_t 351 getAsi() 352 { |
368 assert(flags.isSet(VALID_VADDR)); | 353 assert(privateFlags.isSet(VALID_VADDR)); |
369 return flags & ASI_BITS; 370 } 371 | 354 return flags & ASI_BITS; 355 } 356 |
372 /** Accessor function for asi.*/ 373 void 374 setAsi(uint8_t a) 375 { 376 assert(flags.isSet(VALID_VADDR)); 377 flags.update(a, ASI_BITS); 378 } 379 380 /** Accessor function for asi.*/ | 357 /** Accessor function for MMAPED_IPR flag. */ |
381 bool 382 isMmapedIpr() 383 { | 358 bool 359 isMmapedIpr() 360 { |
384 assert(flags.isSet(VALID_PADDR)); | 361 assert(privateFlags.isSet(VALID_PADDR)); |
385 return flags.isSet(MMAPED_IPR); 386 } 387 | 362 return flags.isSet(MMAPED_IPR); 363 } 364 |
388 /** Accessor function for asi.*/ | |
389 void 390 setMmapedIpr(bool r) 391 { 392 assert(VALID_VADDR); 393 flags.set(MMAPED_IPR); 394 } 395 396 /** Accessor function to check if sc result is valid. */ 397 bool 398 extraDataValid() 399 { | 365 void 366 setMmapedIpr(bool r) 367 { 368 assert(VALID_VADDR); 369 flags.set(MMAPED_IPR); 370 } 371 372 /** Accessor function to check if sc result is valid. */ 373 bool 374 extraDataValid() 375 { |
400 return flags.isSet(VALID_EXTRA_DATA); | 376 return privateFlags.isSet(VALID_EXTRA_DATA); |
401 } 402 403 /** Accessor function for store conditional return value.*/ 404 uint64_t 405 getExtraData() const 406 { | 377 } 378 379 /** Accessor function for store conditional return value.*/ 380 uint64_t 381 getExtraData() const 382 { |
407 assert(flags.isSet(VALID_EXTRA_DATA)); | 383 assert(privateFlags.isSet(VALID_EXTRA_DATA)); |
408 return extraData; 409 } 410 411 /** Accessor function for store conditional return value.*/ 412 void 413 setExtraData(uint64_t _extraData) 414 { 415 extraData = _extraData; | 384 return extraData; 385 } 386 387 /** Accessor function for store conditional return value.*/ 388 void 389 setExtraData(uint64_t _extraData) 390 { 391 extraData = _extraData; |
416 flags.set(VALID_EXTRA_DATA); | 392 privateFlags.set(VALID_EXTRA_DATA); |
417 } 418 419 bool 420 hasContextId() const 421 { | 393 } 394 395 bool 396 hasContextId() const 397 { |
422 return flags.isSet(VALID_CONTEXT_ID); | 398 return privateFlags.isSet(VALID_CONTEXT_ID); |
423 } 424 425 /** Accessor function for context ID.*/ 426 int 427 contextId() const 428 { | 399 } 400 401 /** Accessor function for context ID.*/ 402 int 403 contextId() const 404 { |
429 assert(flags.isSet(VALID_CONTEXT_ID)); | 405 assert(privateFlags.isSet(VALID_CONTEXT_ID)); |
430 return _contextId; 431 } 432 433 /** Accessor function for thread ID. */ 434 int 435 threadId() const 436 { | 406 return _contextId; 407 } 408 409 /** Accessor function for thread ID. */ 410 int 411 threadId() const 412 { |
437 assert(flags.isSet(VALID_THREAD_ID)); | 413 assert(privateFlags.isSet(VALID_THREAD_ID)); |
438 return _threadId; 439 } 440 441 bool 442 hasPC() const 443 { | 414 return _threadId; 415 } 416 417 bool 418 hasPC() const 419 { |
444 return flags.isSet(VALID_PC); | 420 return privateFlags.isSet(VALID_PC); |
445 } 446 447 /** Accessor function for pc.*/ 448 Addr 449 getPC() const 450 { | 421 } 422 423 /** Accessor function for pc.*/ 424 Addr 425 getPC() const 426 { |
451 assert(flags.isSet(VALID_PC)); | 427 assert(privateFlags.isSet(VALID_PC)); |
452 return pc; 453 } 454 455 /** Accessor Function to Check Cacheability. */ 456 bool isUncacheable() const { return flags.isSet(UNCACHEABLE); } 457 bool isInstRead() const { return flags.isSet(INST_READ); } 458 bool isLLSC() const { return flags.isSet(LLSC); } 459 bool isLocked() const { return flags.isSet(LOCKED); } --- 23 unchanged lines hidden --- | 428 return pc; 429 } 430 431 /** Accessor Function to Check Cacheability. */ 432 bool isUncacheable() const { return flags.isSet(UNCACHEABLE); } 433 bool isInstRead() const { return flags.isSet(INST_READ); } 434 bool isLLSC() const { return flags.isSet(LLSC); } 435 bool isLocked() const { return flags.isSet(LOCKED); } --- 23 unchanged lines hidden --- |