diff options
Diffstat (limited to 'arch/xtensa/mm/misc.S')
| -rw-r--r-- | arch/xtensa/mm/misc.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/xtensa/mm/misc.S b/arch/xtensa/mm/misc.S index b048406d875..7f7078f57c4 100644 --- a/arch/xtensa/mm/misc.S +++ b/arch/xtensa/mm/misc.S | |||
| @@ -29,6 +29,7 @@ | |||
| 29 | */ | 29 | */ |
| 30 | 30 | ||
| 31 | ENTRY(clear_page) | 31 | ENTRY(clear_page) |
| 32 | |||
| 32 | entry a1, 16 | 33 | entry a1, 16 |
| 33 | 34 | ||
| 34 | movi a3, 0 | 35 | movi a3, 0 |
| @@ -45,6 +46,8 @@ ENTRY(clear_page) | |||
| 45 | 46 | ||
| 46 | retw | 47 | retw |
| 47 | 48 | ||
| 49 | ENDPROC(clear_page) | ||
| 50 | |||
| 48 | /* | 51 | /* |
| 49 | * copy_page and copy_user_page are the same for non-cache-aliased configs. | 52 | * copy_page and copy_user_page are the same for non-cache-aliased configs. |
| 50 | * | 53 | * |
| @@ -53,6 +56,7 @@ ENTRY(clear_page) | |||
| 53 | */ | 56 | */ |
| 54 | 57 | ||
| 55 | ENTRY(copy_page) | 58 | ENTRY(copy_page) |
| 59 | |||
| 56 | entry a1, 16 | 60 | entry a1, 16 |
| 57 | 61 | ||
| 58 | __loopi a2, a4, PAGE_SIZE, 32 | 62 | __loopi a2, a4, PAGE_SIZE, 32 |
| @@ -84,6 +88,8 @@ ENTRY(copy_page) | |||
| 84 | 88 | ||
| 85 | retw | 89 | retw |
| 86 | 90 | ||
| 91 | ENDPROC(copy_page) | ||
| 92 | |||
| 87 | #ifdef CONFIG_MMU | 93 | #ifdef CONFIG_MMU |
| 88 | /* | 94 | /* |
| 89 | * If we have to deal with cache aliasing, we use temporary memory mappings | 95 | * If we have to deal with cache aliasing, we use temporary memory mappings |
| @@ -109,6 +115,7 @@ ENTRY(__tlbtemp_mapping_start) | |||
| 109 | */ | 115 | */ |
| 110 | 116 | ||
| 111 | ENTRY(clear_user_page) | 117 | ENTRY(clear_user_page) |
| 118 | |||
| 112 | entry a1, 32 | 119 | entry a1, 32 |
| 113 | 120 | ||
| 114 | /* Mark page dirty and determine alias. */ | 121 | /* Mark page dirty and determine alias. */ |
| @@ -164,6 +171,8 @@ ENTRY(clear_user_page) | |||
| 164 | 171 | ||
| 165 | retw | 172 | retw |
| 166 | 173 | ||
| 174 | ENDPROC(clear_user_page) | ||
| 175 | |||
| 167 | /* | 176 | /* |
| 168 | * copy_page_user (void *to, void *from, unsigned long vaddr, struct page *page) | 177 | * copy_page_user (void *to, void *from, unsigned long vaddr, struct page *page) |
| 169 | * a2 a3 a4 a5 | 178 | * a2 a3 a4 a5 |
| @@ -262,6 +271,8 @@ ENTRY(copy_user_page) | |||
| 262 | 271 | ||
| 263 | retw | 272 | retw |
| 264 | 273 | ||
| 274 | ENDPROC(copy_user_page) | ||
| 275 | |||
| 265 | #endif | 276 | #endif |
| 266 | 277 | ||
| 267 | #if (DCACHE_WAY_SIZE > PAGE_SIZE) | 278 | #if (DCACHE_WAY_SIZE > PAGE_SIZE) |
| @@ -272,6 +283,7 @@ ENTRY(copy_user_page) | |||
| 272 | */ | 283 | */ |
| 273 | 284 | ||
| 274 | ENTRY(__flush_invalidate_dcache_page_alias) | 285 | ENTRY(__flush_invalidate_dcache_page_alias) |
| 286 | |||
| 275 | entry sp, 16 | 287 | entry sp, 16 |
| 276 | 288 | ||
| 277 | movi a7, 0 # required for exception handler | 289 | movi a7, 0 # required for exception handler |
| @@ -287,6 +299,7 @@ ENTRY(__flush_invalidate_dcache_page_alias) | |||
| 287 | 299 | ||
| 288 | retw | 300 | retw |
| 289 | 301 | ||
| 302 | ENDPROC(__flush_invalidate_dcache_page_alias) | ||
| 290 | #endif | 303 | #endif |
| 291 | 304 | ||
| 292 | ENTRY(__tlbtemp_mapping_itlb) | 305 | ENTRY(__tlbtemp_mapping_itlb) |
| @@ -294,6 +307,7 @@ ENTRY(__tlbtemp_mapping_itlb) | |||
| 294 | #if (ICACHE_WAY_SIZE > PAGE_SIZE) | 307 | #if (ICACHE_WAY_SIZE > PAGE_SIZE) |
| 295 | 308 | ||
| 296 | ENTRY(__invalidate_icache_page_alias) | 309 | ENTRY(__invalidate_icache_page_alias) |
| 310 | |||
| 297 | entry sp, 16 | 311 | entry sp, 16 |
| 298 | 312 | ||
| 299 | addi a6, a3, (PAGE_KERNEL_EXEC | _PAGE_HW_WRITE) | 313 | addi a6, a3, (PAGE_KERNEL_EXEC | _PAGE_HW_WRITE) |
| @@ -307,11 +321,14 @@ ENTRY(__invalidate_icache_page_alias) | |||
| 307 | isync | 321 | isync |
| 308 | retw | 322 | retw |
| 309 | 323 | ||
| 324 | ENDPROC(__invalidate_icache_page_alias) | ||
| 325 | |||
| 310 | #endif | 326 | #endif |
| 311 | 327 | ||
| 312 | /* End of special treatment in tlb miss exception */ | 328 | /* End of special treatment in tlb miss exception */ |
| 313 | 329 | ||
| 314 | ENTRY(__tlbtemp_mapping_end) | 330 | ENTRY(__tlbtemp_mapping_end) |
| 331 | |||
| 315 | #endif /* CONFIG_MMU | 332 | #endif /* CONFIG_MMU |
| 316 | 333 | ||
| 317 | /* | 334 | /* |
| @@ -319,6 +336,7 @@ ENTRY(__tlbtemp_mapping_end) | |||
| 319 | */ | 336 | */ |
| 320 | 337 | ||
| 321 | ENTRY(__invalidate_icache_page) | 338 | ENTRY(__invalidate_icache_page) |
| 339 | |||
| 322 | entry sp, 16 | 340 | entry sp, 16 |
| 323 | 341 | ||
| 324 | ___invalidate_icache_page a2 a3 | 342 | ___invalidate_icache_page a2 a3 |
| @@ -326,11 +344,14 @@ ENTRY(__invalidate_icache_page) | |||
| 326 | 344 | ||
| 327 | retw | 345 | retw |
| 328 | 346 | ||
| 347 | ENDPROC(__invalidate_icache_page) | ||
| 348 | |||
| 329 | /* | 349 | /* |
| 330 | * void __invalidate_dcache_page(ulong start) | 350 | * void __invalidate_dcache_page(ulong start) |
| 331 | */ | 351 | */ |
| 332 | 352 | ||
| 333 | ENTRY(__invalidate_dcache_page) | 353 | ENTRY(__invalidate_dcache_page) |
| 354 | |||
| 334 | entry sp, 16 | 355 | entry sp, 16 |
| 335 | 356 | ||
| 336 | ___invalidate_dcache_page a2 a3 | 357 | ___invalidate_dcache_page a2 a3 |
| @@ -338,11 +359,14 @@ ENTRY(__invalidate_dcache_page) | |||
| 338 | 359 | ||
| 339 | retw | 360 | retw |
| 340 | 361 | ||
| 362 | ENDPROC(__invalidate_dcache_page) | ||
| 363 | |||
| 341 | /* | 364 | /* |
| 342 | * void __flush_invalidate_dcache_page(ulong start) | 365 | * void __flush_invalidate_dcache_page(ulong start) |
| 343 | */ | 366 | */ |
| 344 | 367 | ||
| 345 | ENTRY(__flush_invalidate_dcache_page) | 368 | ENTRY(__flush_invalidate_dcache_page) |
| 369 | |||
| 346 | entry sp, 16 | 370 | entry sp, 16 |
| 347 | 371 | ||
| 348 | ___flush_invalidate_dcache_page a2 a3 | 372 | ___flush_invalidate_dcache_page a2 a3 |
| @@ -350,11 +374,14 @@ ENTRY(__flush_invalidate_dcache_page) | |||
| 350 | dsync | 374 | dsync |
| 351 | retw | 375 | retw |
| 352 | 376 | ||
| 377 | ENDPROC(__flush_invalidate_dcache_page) | ||
| 378 | |||
| 353 | /* | 379 | /* |
| 354 | * void __flush_dcache_page(ulong start) | 380 | * void __flush_dcache_page(ulong start) |
| 355 | */ | 381 | */ |
| 356 | 382 | ||
| 357 | ENTRY(__flush_dcache_page) | 383 | ENTRY(__flush_dcache_page) |
| 384 | |||
| 358 | entry sp, 16 | 385 | entry sp, 16 |
| 359 | 386 | ||
| 360 | ___flush_dcache_page a2 a3 | 387 | ___flush_dcache_page a2 a3 |
| @@ -362,11 +389,14 @@ ENTRY(__flush_dcache_page) | |||
| 362 | dsync | 389 | dsync |
| 363 | retw | 390 | retw |
| 364 | 391 | ||
| 392 | ENDPROC(__flush_dcache_page) | ||
| 393 | |||
| 365 | /* | 394 | /* |
| 366 | * void __invalidate_icache_range(ulong start, ulong size) | 395 | * void __invalidate_icache_range(ulong start, ulong size) |
| 367 | */ | 396 | */ |
| 368 | 397 | ||
| 369 | ENTRY(__invalidate_icache_range) | 398 | ENTRY(__invalidate_icache_range) |
| 399 | |||
| 370 | entry sp, 16 | 400 | entry sp, 16 |
| 371 | 401 | ||
| 372 | ___invalidate_icache_range a2 a3 a4 | 402 | ___invalidate_icache_range a2 a3 a4 |
| @@ -374,11 +404,14 @@ ENTRY(__invalidate_icache_range) | |||
| 374 | 404 | ||
| 375 | retw | 405 | retw |
| 376 | 406 | ||
| 407 | ENDPROC(__invalidate_icache_range) | ||
| 408 | |||
| 377 | /* | 409 | /* |
| 378 | * void __flush_invalidate_dcache_range(ulong start, ulong size) | 410 | * void __flush_invalidate_dcache_range(ulong start, ulong size) |
| 379 | */ | 411 | */ |
| 380 | 412 | ||
| 381 | ENTRY(__flush_invalidate_dcache_range) | 413 | ENTRY(__flush_invalidate_dcache_range) |
| 414 | |||
| 382 | entry sp, 16 | 415 | entry sp, 16 |
| 383 | 416 | ||
| 384 | ___flush_invalidate_dcache_range a2 a3 a4 | 417 | ___flush_invalidate_dcache_range a2 a3 a4 |
| @@ -386,11 +419,14 @@ ENTRY(__flush_invalidate_dcache_range) | |||
| 386 | 419 | ||
| 387 | retw | 420 | retw |
| 388 | 421 | ||
| 422 | ENDPROC(__flush_invalidate_dcache_range) | ||
| 423 | |||
| 389 | /* | 424 | /* |
| 390 | * void _flush_dcache_range(ulong start, ulong size) | 425 | * void _flush_dcache_range(ulong start, ulong size) |
| 391 | */ | 426 | */ |
| 392 | 427 | ||
| 393 | ENTRY(__flush_dcache_range) | 428 | ENTRY(__flush_dcache_range) |
| 429 | |||
| 394 | entry sp, 16 | 430 | entry sp, 16 |
| 395 | 431 | ||
| 396 | ___flush_dcache_range a2 a3 a4 | 432 | ___flush_dcache_range a2 a3 a4 |
| @@ -398,22 +434,28 @@ ENTRY(__flush_dcache_range) | |||
| 398 | 434 | ||
| 399 | retw | 435 | retw |
| 400 | 436 | ||
| 437 | ENDPROC(__flush_dcache_range) | ||
| 438 | |||
| 401 | /* | 439 | /* |
| 402 | * void _invalidate_dcache_range(ulong start, ulong size) | 440 | * void _invalidate_dcache_range(ulong start, ulong size) |
| 403 | */ | 441 | */ |
| 404 | 442 | ||
| 405 | ENTRY(__invalidate_dcache_range) | 443 | ENTRY(__invalidate_dcache_range) |
| 444 | |||
| 406 | entry sp, 16 | 445 | entry sp, 16 |
| 407 | 446 | ||
| 408 | ___invalidate_dcache_range a2 a3 a4 | 447 | ___invalidate_dcache_range a2 a3 a4 |
| 409 | 448 | ||
| 410 | retw | 449 | retw |
| 411 | 450 | ||
| 451 | ENDPROC(__invalidate_dcache_range) | ||
| 452 | |||
| 412 | /* | 453 | /* |
| 413 | * void _invalidate_icache_all(void) | 454 | * void _invalidate_icache_all(void) |
| 414 | */ | 455 | */ |
| 415 | 456 | ||
| 416 | ENTRY(__invalidate_icache_all) | 457 | ENTRY(__invalidate_icache_all) |
| 458 | |||
| 417 | entry sp, 16 | 459 | entry sp, 16 |
| 418 | 460 | ||
| 419 | ___invalidate_icache_all a2 a3 | 461 | ___invalidate_icache_all a2 a3 |
| @@ -421,11 +463,14 @@ ENTRY(__invalidate_icache_all) | |||
| 421 | 463 | ||
| 422 | retw | 464 | retw |
| 423 | 465 | ||
| 466 | ENDPROC(__invalidate_icache_all) | ||
| 467 | |||
| 424 | /* | 468 | /* |
| 425 | * void _flush_invalidate_dcache_all(void) | 469 | * void _flush_invalidate_dcache_all(void) |
| 426 | */ | 470 | */ |
| 427 | 471 | ||
| 428 | ENTRY(__flush_invalidate_dcache_all) | 472 | ENTRY(__flush_invalidate_dcache_all) |
| 473 | |||
| 429 | entry sp, 16 | 474 | entry sp, 16 |
| 430 | 475 | ||
| 431 | ___flush_invalidate_dcache_all a2 a3 | 476 | ___flush_invalidate_dcache_all a2 a3 |
| @@ -433,11 +478,14 @@ ENTRY(__flush_invalidate_dcache_all) | |||
| 433 | 478 | ||
| 434 | retw | 479 | retw |
| 435 | 480 | ||
| 481 | ENDPROC(__flush_invalidate_dcache_all) | ||
| 482 | |||
| 436 | /* | 483 | /* |
| 437 | * void _invalidate_dcache_all(void) | 484 | * void _invalidate_dcache_all(void) |
| 438 | */ | 485 | */ |
| 439 | 486 | ||
| 440 | ENTRY(__invalidate_dcache_all) | 487 | ENTRY(__invalidate_dcache_all) |
| 488 | |||
| 441 | entry sp, 16 | 489 | entry sp, 16 |
| 442 | 490 | ||
| 443 | ___invalidate_dcache_all a2 a3 | 491 | ___invalidate_dcache_all a2 a3 |
| @@ -445,3 +493,4 @@ ENTRY(__invalidate_dcache_all) | |||
| 445 | 493 | ||
| 446 | retw | 494 | retw |
| 447 | 495 | ||
| 496 | ENDPROC(__invalidate_dcache_all) | ||
