diff options
Diffstat (limited to 'arch/xtensa/mm/misc.S')
-rw-r--r-- | arch/xtensa/mm/misc.S | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/arch/xtensa/mm/misc.S b/arch/xtensa/mm/misc.S index b048406d8756..d97ed1ba7b0a 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 |
@@ -171,7 +180,7 @@ ENTRY(clear_user_page) | |||
171 | 180 | ||
172 | ENTRY(copy_user_page) | 181 | ENTRY(copy_user_page) |
173 | 182 | ||
174 | entry a1, 32 | 183 | entry a1, 32 |
175 | 184 | ||
176 | /* Mark page dirty and determine alias for destination. */ | 185 | /* Mark page dirty and determine alias for destination. */ |
177 | 186 | ||
@@ -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) | ||