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8
9#ifndef _SPARC64_PGTABLE_H
10#define _SPARC64_PGTABLE_H
11
12
13
14
15
16#include <asm-generic/pgtable-nop4d.h>
17#include <linux/compiler.h>
18#include <linux/const.h>
19#include <asm/types.h>
20#include <asm/spitfire.h>
21#include <asm/asi.h>
22#include <asm/adi.h>
23#include <asm/page.h>
24#include <asm/processor.h>
25
26
27
28
29
30
31
32
33
34
35
36
37#define TLBTEMP_BASE _AC(0x0000000006000000,UL)
38#define TSBMAP_8K_BASE _AC(0x0000000008000000,UL)
39#define TSBMAP_4M_BASE _AC(0x0000000008400000,UL)
40#define MODULES_VADDR _AC(0x0000000010000000,UL)
41#define MODULES_LEN _AC(0x00000000e0000000,UL)
42#define MODULES_END _AC(0x00000000f0000000,UL)
43#define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL)
44#define HI_OBP_ADDRESS _AC(0x0000000100000000,UL)
45#define VMALLOC_START _AC(0x0000000100000000,UL)
46#define VMEMMAP_BASE VMALLOC_END
47
48
49
50
51#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-3))
52#define PMD_SIZE (_AC(1,UL) << PMD_SHIFT)
53#define PMD_MASK (~(PMD_SIZE-1))
54#define PMD_BITS (PAGE_SHIFT - 3)
55
56
57
58
59#define PUD_SHIFT (PMD_SHIFT + PMD_BITS)
60#define PUD_SIZE (_AC(1,UL) << PUD_SHIFT)
61#define PUD_MASK (~(PUD_SIZE-1))
62#define PUD_BITS (PAGE_SHIFT - 3)
63
64
65#define PGDIR_SHIFT (PUD_SHIFT + PUD_BITS)
66#define PGDIR_SIZE (_AC(1,UL) << PGDIR_SHIFT)
67#define PGDIR_MASK (~(PGDIR_SIZE-1))
68#define PGDIR_BITS (PAGE_SHIFT - 3)
69
70#if (MAX_PHYS_ADDRESS_BITS > PGDIR_SHIFT + PGDIR_BITS)
71#error MAX_PHYS_ADDRESS_BITS exceeds what kernel page tables can support
72#endif
73
74#if (PGDIR_SHIFT + PGDIR_BITS) != 53
75#error Page table parameters do not cover virtual address space properly.
76#endif
77
78#if (PMD_SHIFT != HPAGE_SHIFT)
79#error PMD_SHIFT must equal HPAGE_SHIFT for transparent huge pages.
80#endif
81
82#ifndef __ASSEMBLY__
83
84extern unsigned long VMALLOC_END;
85
86#define vmemmap ((struct page *)VMEMMAP_BASE)
87
88#include <linux/sched.h>
89
90bool kern_addr_valid(unsigned long addr);
91
92
93#define PTRS_PER_PTE (1UL << (PAGE_SHIFT-3))
94#define PTRS_PER_PMD (1UL << PMD_BITS)
95#define PTRS_PER_PUD (1UL << PUD_BITS)
96#define PTRS_PER_PGD (1UL << PGDIR_BITS)
97
98
99#define FIRST_USER_ADDRESS 0UL
100
101#define pmd_ERROR(e) \
102 pr_err("%s:%d: bad pmd %p(%016lx) seen at (%pS)\n", \
103 __FILE__, __LINE__, &(e), pmd_val(e), __builtin_return_address(0))
104#define pud_ERROR(e) \
105 pr_err("%s:%d: bad pud %p(%016lx) seen at (%pS)\n", \
106 __FILE__, __LINE__, &(e), pud_val(e), __builtin_return_address(0))
107#define pgd_ERROR(e) \
108 pr_err("%s:%d: bad pgd %p(%016lx) seen at (%pS)\n", \
109 __FILE__, __LINE__, &(e), pgd_val(e), __builtin_return_address(0))
110
111#endif
112
113
114#define _PAGE_VALID _AC(0x8000000000000000,UL)
115#define _PAGE_R _AC(0x8000000000000000,UL)
116#define _PAGE_SPECIAL _AC(0x0200000000000000,UL)
117#define _PAGE_PMD_HUGE _AC(0x0100000000000000,UL)
118#define _PAGE_PUD_HUGE _PAGE_PMD_HUGE
119
120
121#define _PAGE_SZ4MB_4U _AC(0x6000000000000000,UL)
122#define _PAGE_SZ512K_4U _AC(0x4000000000000000,UL)
123#define _PAGE_SZ64K_4U _AC(0x2000000000000000,UL)
124#define _PAGE_SZ8K_4U _AC(0x0000000000000000,UL)
125#define _PAGE_NFO_4U _AC(0x1000000000000000,UL)
126#define _PAGE_IE_4U _AC(0x0800000000000000,UL)
127#define _PAGE_SOFT2_4U _AC(0x07FC000000000000,UL)
128#define _PAGE_SPECIAL_4U _AC(0x0200000000000000,UL)
129#define _PAGE_PMD_HUGE_4U _AC(0x0100000000000000,UL)
130#define _PAGE_RES1_4U _AC(0x0002000000000000,UL)
131#define _PAGE_SZ32MB_4U _AC(0x0001000000000000,UL)
132#define _PAGE_SZ256MB_4U _AC(0x2001000000000000,UL)
133#define _PAGE_SZALL_4U _AC(0x6001000000000000,UL)
134#define _PAGE_SN_4U _AC(0x0000800000000000,UL)
135#define _PAGE_RES2_4U _AC(0x0000780000000000,UL)
136#define _PAGE_PADDR_4U _AC(0x000007FFFFFFE000,UL)
137#define _PAGE_SOFT_4U _AC(0x0000000000001F80,UL)
138#define _PAGE_EXEC_4U _AC(0x0000000000001000,UL)
139#define _PAGE_MODIFIED_4U _AC(0x0000000000000800,UL)
140#define _PAGE_ACCESSED_4U _AC(0x0000000000000400,UL)
141#define _PAGE_READ_4U _AC(0x0000000000000200,UL)
142#define _PAGE_WRITE_4U _AC(0x0000000000000100,UL)
143#define _PAGE_PRESENT_4U _AC(0x0000000000000080,UL)
144#define _PAGE_L_4U _AC(0x0000000000000040,UL)
145#define _PAGE_CP_4U _AC(0x0000000000000020,UL)
146#define _PAGE_CV_4U _AC(0x0000000000000010,UL)
147#define _PAGE_E_4U _AC(0x0000000000000008,UL)
148#define _PAGE_P_4U _AC(0x0000000000000004,UL)
149#define _PAGE_W_4U _AC(0x0000000000000002,UL)
150
151
152#define _PAGE_NFO_4V _AC(0x4000000000000000,UL)
153#define _PAGE_SOFT2_4V _AC(0x3F00000000000000,UL)
154#define _PAGE_MODIFIED_4V _AC(0x2000000000000000,UL)
155#define _PAGE_ACCESSED_4V _AC(0x1000000000000000,UL)
156#define _PAGE_READ_4V _AC(0x0800000000000000,UL)
157#define _PAGE_WRITE_4V _AC(0x0400000000000000,UL)
158#define _PAGE_SPECIAL_4V _AC(0x0200000000000000,UL)
159#define _PAGE_PMD_HUGE_4V _AC(0x0100000000000000,UL)
160#define _PAGE_PADDR_4V _AC(0x00FFFFFFFFFFE000,UL)
161#define _PAGE_IE_4V _AC(0x0000000000001000,UL)
162#define _PAGE_E_4V _AC(0x0000000000000800,UL)
163#define _PAGE_CP_4V _AC(0x0000000000000400,UL)
164#define _PAGE_CV_4V _AC(0x0000000000000200,UL)
165
166#define _PAGE_MCD_4V _AC(0x0000000000000200,UL)
167#define _PAGE_P_4V _AC(0x0000000000000100,UL)
168#define _PAGE_EXEC_4V _AC(0x0000000000000080,UL)
169#define _PAGE_W_4V _AC(0x0000000000000040,UL)
170#define _PAGE_SOFT_4V _AC(0x0000000000000030,UL)
171#define _PAGE_PRESENT_4V _AC(0x0000000000000010,UL)
172#define _PAGE_RESV_4V _AC(0x0000000000000008,UL)
173#define _PAGE_SZ16GB_4V _AC(0x0000000000000007,UL)
174#define _PAGE_SZ2GB_4V _AC(0x0000000000000006,UL)
175#define _PAGE_SZ256MB_4V _AC(0x0000000000000005,UL)
176#define _PAGE_SZ32MB_4V _AC(0x0000000000000004,UL)
177#define _PAGE_SZ4MB_4V _AC(0x0000000000000003,UL)
178#define _PAGE_SZ512K_4V _AC(0x0000000000000002,UL)
179#define _PAGE_SZ64K_4V _AC(0x0000000000000001,UL)
180#define _PAGE_SZ8K_4V _AC(0x0000000000000000,UL)
181#define _PAGE_SZALL_4V _AC(0x0000000000000007,UL)
182
183#define _PAGE_SZBITS_4U _PAGE_SZ8K_4U
184#define _PAGE_SZBITS_4V _PAGE_SZ8K_4V
185
186#if REAL_HPAGE_SHIFT != 22
187#error REAL_HPAGE_SHIFT and _PAGE_SZHUGE_foo must match up
188#endif
189
190#define _PAGE_SZHUGE_4U _PAGE_SZ4MB_4U
191#define _PAGE_SZHUGE_4V _PAGE_SZ4MB_4V
192
193
194#define __P000 __pgprot(0)
195#define __P001 __pgprot(0)
196#define __P010 __pgprot(0)
197#define __P011 __pgprot(0)
198#define __P100 __pgprot(0)
199#define __P101 __pgprot(0)
200#define __P110 __pgprot(0)
201#define __P111 __pgprot(0)
202
203#define __S000 __pgprot(0)
204#define __S001 __pgprot(0)
205#define __S010 __pgprot(0)
206#define __S011 __pgprot(0)
207#define __S100 __pgprot(0)
208#define __S101 __pgprot(0)
209#define __S110 __pgprot(0)
210#define __S111 __pgprot(0)
211
212#ifndef __ASSEMBLY__
213
214pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
215
216unsigned long pte_sz_bits(unsigned long size);
217
218extern pgprot_t PAGE_KERNEL;
219extern pgprot_t PAGE_KERNEL_LOCKED;
220extern pgprot_t PAGE_COPY;
221extern pgprot_t PAGE_SHARED;
222
223
224extern unsigned long _PAGE_IE;
225extern unsigned long _PAGE_E;
226extern unsigned long _PAGE_CACHE;
227
228extern unsigned long pg_iobits;
229extern unsigned long _PAGE_ALL_SZ_BITS;
230
231extern struct page *mem_map_zero;
232#define ZERO_PAGE(vaddr) (mem_map_zero)
233
234
235
236
237
238
239static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
240{
241 unsigned long paddr = pfn << PAGE_SHIFT;
242
243 BUILD_BUG_ON(_PAGE_SZBITS_4U != 0UL || _PAGE_SZBITS_4V != 0UL);
244 return __pte(paddr | pgprot_val(prot));
245}
246#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
247
248#ifdef CONFIG_TRANSPARENT_HUGEPAGE
249static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
250{
251 pte_t pte = pfn_pte(page_nr, pgprot);
252
253 return __pmd(pte_val(pte));
254}
255#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot))
256#endif
257
258
259static inline unsigned long pte_pfn(pte_t pte)
260{
261 unsigned long ret;
262
263 __asm__ __volatile__(
264 "\n661: sllx %1, %2, %0\n"
265 " srlx %0, %3, %0\n"
266 " .section .sun4v_2insn_patch, \"ax\"\n"
267 " .word 661b\n"
268 " sllx %1, %4, %0\n"
269 " srlx %0, %5, %0\n"
270 " .previous\n"
271 : "=r" (ret)
272 : "r" (pte_val(pte)),
273 "i" (21), "i" (21 + PAGE_SHIFT),
274 "i" (8), "i" (8 + PAGE_SHIFT));
275
276 return ret;
277}
278#define pte_page(x) pfn_to_page(pte_pfn(x))
279
280static inline pte_t pte_modify(pte_t pte, pgprot_t prot)
281{
282 unsigned long mask, tmp;
283
284
285
286
287
288
289
290
291
292
293
294 BUILD_BUG_ON(_PAGE_SZBITS_4U != 0UL || _PAGE_SZBITS_4V != 0UL);
295 __asm__ __volatile__(
296 "\n661: sethi %%uhi(%2), %1\n"
297 " sethi %%hi(%2), %0\n"
298 "\n662: or %1, %%ulo(%2), %1\n"
299 " or %0, %%lo(%2), %0\n"
300 "\n663: sllx %1, 32, %1\n"
301 " or %0, %1, %0\n"
302 " .section .sun4v_2insn_patch, \"ax\"\n"
303 " .word 661b\n"
304 " sethi %%uhi(%3), %1\n"
305 " sethi %%hi(%3), %0\n"
306 " .word 662b\n"
307 " or %1, %%ulo(%3), %1\n"
308 " or %0, %%lo(%3), %0\n"
309 " .word 663b\n"
310 " sllx %1, 32, %1\n"
311 " or %0, %1, %0\n"
312 " .previous\n"
313 " .section .sun_m7_2insn_patch, \"ax\"\n"
314 " .word 661b\n"
315 " sethi %%uhi(%4), %1\n"
316 " sethi %%hi(%4), %0\n"
317 " .word 662b\n"
318 " or %1, %%ulo(%4), %1\n"
319 " or %0, %%lo(%4), %0\n"
320 " .word 663b\n"
321 " sllx %1, 32, %1\n"
322 " or %0, %1, %0\n"
323 " .previous\n"
324 : "=r" (mask), "=r" (tmp)
325 : "i" (_PAGE_PADDR_4U | _PAGE_MODIFIED_4U | _PAGE_ACCESSED_4U |
326 _PAGE_CP_4U | _PAGE_CV_4U | _PAGE_E_4U |
327 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4U),
328 "i" (_PAGE_PADDR_4V | _PAGE_MODIFIED_4V | _PAGE_ACCESSED_4V |
329 _PAGE_CP_4V | _PAGE_CV_4V | _PAGE_E_4V |
330 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4V),
331 "i" (_PAGE_PADDR_4V | _PAGE_MODIFIED_4V | _PAGE_ACCESSED_4V |
332 _PAGE_CP_4V | _PAGE_E_4V |
333 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4V));
334
335 return __pte((pte_val(pte) & mask) | (pgprot_val(prot) & ~mask));
336}
337
338#ifdef CONFIG_TRANSPARENT_HUGEPAGE
339static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
340{
341 pte_t pte = __pte(pmd_val(pmd));
342
343 pte = pte_modify(pte, newprot);
344
345 return __pmd(pte_val(pte));
346}
347#endif
348
349static inline pgprot_t pgprot_noncached(pgprot_t prot)
350{
351 unsigned long val = pgprot_val(prot);
352
353 __asm__ __volatile__(
354 "\n661: andn %0, %2, %0\n"
355 " or %0, %3, %0\n"
356 " .section .sun4v_2insn_patch, \"ax\"\n"
357 " .word 661b\n"
358 " andn %0, %4, %0\n"
359 " or %0, %5, %0\n"
360 " .previous\n"
361 " .section .sun_m7_2insn_patch, \"ax\"\n"
362 " .word 661b\n"
363 " andn %0, %6, %0\n"
364 " or %0, %5, %0\n"
365 " .previous\n"
366 : "=r" (val)
367 : "0" (val), "i" (_PAGE_CP_4U | _PAGE_CV_4U), "i" (_PAGE_E_4U),
368 "i" (_PAGE_CP_4V | _PAGE_CV_4V), "i" (_PAGE_E_4V),
369 "i" (_PAGE_CP_4V));
370
371 return __pgprot(val);
372}
373
374
375
376
377#define pgprot_noncached pgprot_noncached
378
379#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
380extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
381 struct page *page, int writable);
382#define arch_make_huge_pte arch_make_huge_pte
383static inline unsigned long __pte_default_huge_mask(void)
384{
385 unsigned long mask;
386
387 __asm__ __volatile__(
388 "\n661: sethi %%uhi(%1), %0\n"
389 " sllx %0, 32, %0\n"
390 " .section .sun4v_2insn_patch, \"ax\"\n"
391 " .word 661b\n"
392 " mov %2, %0\n"
393 " nop\n"
394 " .previous\n"
395 : "=r" (mask)
396 : "i" (_PAGE_SZHUGE_4U), "i" (_PAGE_SZHUGE_4V));
397
398 return mask;
399}
400
401static inline pte_t pte_mkhuge(pte_t pte)
402{
403 return __pte(pte_val(pte) | __pte_default_huge_mask());
404}
405
406static inline bool is_default_hugetlb_pte(pte_t pte)
407{
408 unsigned long mask = __pte_default_huge_mask();
409
410 return (pte_val(pte) & mask) == mask;
411}
412
413static inline bool is_hugetlb_pmd(pmd_t pmd)
414{
415 return !!(pmd_val(pmd) & _PAGE_PMD_HUGE);
416}
417
418static inline bool is_hugetlb_pud(pud_t pud)
419{
420 return !!(pud_val(pud) & _PAGE_PUD_HUGE);
421}
422
423#ifdef CONFIG_TRANSPARENT_HUGEPAGE
424static inline pmd_t pmd_mkhuge(pmd_t pmd)
425{
426 pte_t pte = __pte(pmd_val(pmd));
427
428 pte = pte_mkhuge(pte);
429 pte_val(pte) |= _PAGE_PMD_HUGE;
430
431 return __pmd(pte_val(pte));
432}
433#endif
434#else
435static inline bool is_hugetlb_pte(pte_t pte)
436{
437 return false;
438}
439#endif
440
441static inline pte_t pte_mkdirty(pte_t pte)
442{
443 unsigned long val = pte_val(pte), tmp;
444
445 __asm__ __volatile__(
446 "\n661: or %0, %3, %0\n"
447 " nop\n"
448 "\n662: nop\n"
449 " nop\n"
450 " .section .sun4v_2insn_patch, \"ax\"\n"
451 " .word 661b\n"
452 " sethi %%uhi(%4), %1\n"
453 " sllx %1, 32, %1\n"
454 " .word 662b\n"
455 " or %1, %%lo(%4), %1\n"
456 " or %0, %1, %0\n"
457 " .previous\n"
458 : "=r" (val), "=r" (tmp)
459 : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U),
460 "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V));
461
462 return __pte(val);
463}
464
465static inline pte_t pte_mkclean(pte_t pte)
466{
467 unsigned long val = pte_val(pte), tmp;
468
469 __asm__ __volatile__(
470 "\n661: andn %0, %3, %0\n"
471 " nop\n"
472 "\n662: nop\n"
473 " nop\n"
474 " .section .sun4v_2insn_patch, \"ax\"\n"
475 " .word 661b\n"
476 " sethi %%uhi(%4), %1\n"
477 " sllx %1, 32, %1\n"
478 " .word 662b\n"
479 " or %1, %%lo(%4), %1\n"
480 " andn %0, %1, %0\n"
481 " .previous\n"
482 : "=r" (val), "=r" (tmp)
483 : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U),
484 "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V));
485
486 return __pte(val);
487}
488
489static inline pte_t pte_mkwrite(pte_t pte)
490{
491 unsigned long val = pte_val(pte), mask;
492
493 __asm__ __volatile__(
494 "\n661: mov %1, %0\n"
495 " nop\n"
496 " .section .sun4v_2insn_patch, \"ax\"\n"
497 " .word 661b\n"
498 " sethi %%uhi(%2), %0\n"
499 " sllx %0, 32, %0\n"
500 " .previous\n"
501 : "=r" (mask)
502 : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V));
503
504 return __pte(val | mask);
505}
506
507static inline pte_t pte_wrprotect(pte_t pte)
508{
509 unsigned long val = pte_val(pte), tmp;
510
511 __asm__ __volatile__(
512 "\n661: andn %0, %3, %0\n"
513 " nop\n"
514 "\n662: nop\n"
515 " nop\n"
516 " .section .sun4v_2insn_patch, \"ax\"\n"
517 " .word 661b\n"
518 " sethi %%uhi(%4), %1\n"
519 " sllx %1, 32, %1\n"
520 " .word 662b\n"
521 " or %1, %%lo(%4), %1\n"
522 " andn %0, %1, %0\n"
523 " .previous\n"
524 : "=r" (val), "=r" (tmp)
525 : "0" (val), "i" (_PAGE_WRITE_4U | _PAGE_W_4U),
526 "i" (_PAGE_WRITE_4V | _PAGE_W_4V));
527
528 return __pte(val);
529}
530
531static inline pte_t pte_mkold(pte_t pte)
532{
533 unsigned long mask;
534
535 __asm__ __volatile__(
536 "\n661: mov %1, %0\n"
537 " nop\n"
538 " .section .sun4v_2insn_patch, \"ax\"\n"
539 " .word 661b\n"
540 " sethi %%uhi(%2), %0\n"
541 " sllx %0, 32, %0\n"
542 " .previous\n"
543 : "=r" (mask)
544 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
545
546 mask |= _PAGE_R;
547
548 return __pte(pte_val(pte) & ~mask);
549}
550
551static inline pte_t pte_mkyoung(pte_t pte)
552{
553 unsigned long mask;
554
555 __asm__ __volatile__(
556 "\n661: mov %1, %0\n"
557 " nop\n"
558 " .section .sun4v_2insn_patch, \"ax\"\n"
559 " .word 661b\n"
560 " sethi %%uhi(%2), %0\n"
561 " sllx %0, 32, %0\n"
562 " .previous\n"
563 : "=r" (mask)
564 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
565
566 mask |= _PAGE_R;
567
568 return __pte(pte_val(pte) | mask);
569}
570
571static inline pte_t pte_mkspecial(pte_t pte)
572{
573 pte_val(pte) |= _PAGE_SPECIAL;
574 return pte;
575}
576
577static inline pte_t pte_mkmcd(pte_t pte)
578{
579 pte_val(pte) |= _PAGE_MCD_4V;
580 return pte;
581}
582
583static inline pte_t pte_mknotmcd(pte_t pte)
584{
585 pte_val(pte) &= ~_PAGE_MCD_4V;
586 return pte;
587}
588
589static inline unsigned long pte_young(pte_t pte)
590{
591 unsigned long mask;
592
593 __asm__ __volatile__(
594 "\n661: mov %1, %0\n"
595 " nop\n"
596 " .section .sun4v_2insn_patch, \"ax\"\n"
597 " .word 661b\n"
598 " sethi %%uhi(%2), %0\n"
599 " sllx %0, 32, %0\n"
600 " .previous\n"
601 : "=r" (mask)
602 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
603
604 return (pte_val(pte) & mask);
605}
606
607static inline unsigned long pte_dirty(pte_t pte)
608{
609 unsigned long mask;
610
611 __asm__ __volatile__(
612 "\n661: mov %1, %0\n"
613 " nop\n"
614 " .section .sun4v_2insn_patch, \"ax\"\n"
615 " .word 661b\n"
616 " sethi %%uhi(%2), %0\n"
617 " sllx %0, 32, %0\n"
618 " .previous\n"
619 : "=r" (mask)
620 : "i" (_PAGE_MODIFIED_4U), "i" (_PAGE_MODIFIED_4V));
621
622 return (pte_val(pte) & mask);
623}
624
625static inline unsigned long pte_write(pte_t pte)
626{
627 unsigned long mask;
628
629 __asm__ __volatile__(
630 "\n661: mov %1, %0\n"
631 " nop\n"
632 " .section .sun4v_2insn_patch, \"ax\"\n"
633 " .word 661b\n"
634 " sethi %%uhi(%2), %0\n"
635 " sllx %0, 32, %0\n"
636 " .previous\n"
637 : "=r" (mask)
638 : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V));
639
640 return (pte_val(pte) & mask);
641}
642
643static inline unsigned long pte_exec(pte_t pte)
644{
645 unsigned long mask;
646
647 __asm__ __volatile__(
648 "\n661: sethi %%hi(%1), %0\n"
649 " .section .sun4v_1insn_patch, \"ax\"\n"
650 " .word 661b\n"
651 " mov %2, %0\n"
652 " .previous\n"
653 : "=r" (mask)
654 : "i" (_PAGE_EXEC_4U), "i" (_PAGE_EXEC_4V));
655
656 return (pte_val(pte) & mask);
657}
658
659static inline unsigned long pte_present(pte_t pte)
660{
661 unsigned long val = pte_val(pte);
662
663 __asm__ __volatile__(
664 "\n661: and %0, %2, %0\n"
665 " .section .sun4v_1insn_patch, \"ax\"\n"
666 " .word 661b\n"
667 " and %0, %3, %0\n"
668 " .previous\n"
669 : "=r" (val)
670 : "0" (val), "i" (_PAGE_PRESENT_4U), "i" (_PAGE_PRESENT_4V));
671
672 return val;
673}
674
675#define pte_accessible pte_accessible
676static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
677{
678 return pte_val(a) & _PAGE_VALID;
679}
680
681static inline unsigned long pte_special(pte_t pte)
682{
683 return pte_val(pte) & _PAGE_SPECIAL;
684}
685
686#define pmd_leaf pmd_large
687static inline unsigned long pmd_large(pmd_t pmd)
688{
689 pte_t pte = __pte(pmd_val(pmd));
690
691 return pte_val(pte) & _PAGE_PMD_HUGE;
692}
693
694static inline unsigned long pmd_pfn(pmd_t pmd)
695{
696 pte_t pte = __pte(pmd_val(pmd));
697
698 return pte_pfn(pte);
699}
700
701#define pmd_write pmd_write
702static inline unsigned long pmd_write(pmd_t pmd)
703{
704 pte_t pte = __pte(pmd_val(pmd));
705
706 return pte_write(pte);
707}
708
709#define pud_write(pud) pte_write(__pte(pud_val(pud)))
710
711#ifdef CONFIG_TRANSPARENT_HUGEPAGE
712static inline unsigned long pmd_dirty(pmd_t pmd)
713{
714 pte_t pte = __pte(pmd_val(pmd));
715
716 return pte_dirty(pte);
717}
718
719static inline unsigned long pmd_young(pmd_t pmd)
720{
721 pte_t pte = __pte(pmd_val(pmd));
722
723 return pte_young(pte);
724}
725
726static inline unsigned long pmd_trans_huge(pmd_t pmd)
727{
728 pte_t pte = __pte(pmd_val(pmd));
729
730 return pte_val(pte) & _PAGE_PMD_HUGE;
731}
732
733static inline pmd_t pmd_mkold(pmd_t pmd)
734{
735 pte_t pte = __pte(pmd_val(pmd));
736
737 pte = pte_mkold(pte);
738
739 return __pmd(pte_val(pte));
740}
741
742static inline pmd_t pmd_wrprotect(pmd_t pmd)
743{
744 pte_t pte = __pte(pmd_val(pmd));
745
746 pte = pte_wrprotect(pte);
747
748 return __pmd(pte_val(pte));
749}
750
751static inline pmd_t pmd_mkdirty(pmd_t pmd)
752{
753 pte_t pte = __pte(pmd_val(pmd));
754
755 pte = pte_mkdirty(pte);
756
757 return __pmd(pte_val(pte));
758}
759
760static inline pmd_t pmd_mkclean(pmd_t pmd)
761{
762 pte_t pte = __pte(pmd_val(pmd));
763
764 pte = pte_mkclean(pte);
765
766 return __pmd(pte_val(pte));
767}
768
769static inline pmd_t pmd_mkyoung(pmd_t pmd)
770{
771 pte_t pte = __pte(pmd_val(pmd));
772
773 pte = pte_mkyoung(pte);
774
775 return __pmd(pte_val(pte));
776}
777
778static inline pmd_t pmd_mkwrite(pmd_t pmd)
779{
780 pte_t pte = __pte(pmd_val(pmd));
781
782 pte = pte_mkwrite(pte);
783
784 return __pmd(pte_val(pte));
785}
786
787static inline pgprot_t pmd_pgprot(pmd_t entry)
788{
789 unsigned long val = pmd_val(entry);
790
791 return __pgprot(val);
792}
793#endif
794
795static inline int pmd_present(pmd_t pmd)
796{
797 return pmd_val(pmd) != 0UL;
798}
799
800#define pmd_none(pmd) (!pmd_val(pmd))
801
802
803
804
805
806
807
808#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
809
810#define pud_none(pud) (!pud_val(pud))
811
812#define pud_bad(pud) (pud_val(pud) & ~PAGE_MASK)
813
814#define p4d_none(p4d) (!p4d_val(p4d))
815
816#define p4d_bad(p4d) (p4d_val(p4d) & ~PAGE_MASK)
817
818#ifdef CONFIG_TRANSPARENT_HUGEPAGE
819void set_pmd_at(struct mm_struct *mm, unsigned long addr,
820 pmd_t *pmdp, pmd_t pmd);
821#else
822static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
823 pmd_t *pmdp, pmd_t pmd)
824{
825 *pmdp = pmd;
826}
827#endif
828
829static inline void pmd_set(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
830{
831 unsigned long val = __pa((unsigned long) (ptep));
832
833 pmd_val(*pmdp) = val;
834}
835
836#define pud_set(pudp, pmdp) \
837 (pud_val(*(pudp)) = (__pa((unsigned long) (pmdp))))
838static inline unsigned long pmd_page_vaddr(pmd_t pmd)
839{
840 pte_t pte = __pte(pmd_val(pmd));
841 unsigned long pfn;
842
843 pfn = pte_pfn(pte);
844
845 return ((unsigned long) __va(pfn << PAGE_SHIFT));
846}
847
848static inline unsigned long pud_page_vaddr(pud_t pud)
849{
850 pte_t pte = __pte(pud_val(pud));
851 unsigned long pfn;
852
853 pfn = pte_pfn(pte);
854
855 return ((unsigned long) __va(pfn << PAGE_SHIFT));
856}
857
858#define pmd_page(pmd) virt_to_page((void *)pmd_page_vaddr(pmd))
859#define pud_page(pud) virt_to_page((void *)pud_page_vaddr(pud))
860#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL)
861#define pud_present(pud) (pud_val(pud) != 0U)
862#define pud_clear(pudp) (pud_val(*(pudp)) = 0UL)
863#define p4d_page_vaddr(p4d) \
864 ((unsigned long) __va(p4d_val(p4d)))
865#define p4d_present(p4d) (p4d_val(p4d) != 0U)
866#define p4d_clear(p4dp) (p4d_val(*(p4dp)) = 0UL)
867
868
869#define p4d_page(p4d) NULL
870
871#define pud_leaf pud_large
872static inline unsigned long pud_large(pud_t pud)
873{
874 pte_t pte = __pte(pud_val(pud));
875
876 return pte_val(pte) & _PAGE_PMD_HUGE;
877}
878
879static inline unsigned long pud_pfn(pud_t pud)
880{
881 pte_t pte = __pte(pud_val(pud));
882
883 return pte_pfn(pte);
884}
885
886
887#define pte_none(pte) (!pte_val(pte))
888
889#define p4d_set(p4dp, pudp) \
890 (p4d_val(*(p4dp)) = (__pa((unsigned long) (pudp))))
891
892
893extern struct mm_struct init_mm;
894
895
896void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
897 pte_t *ptep, pte_t orig, int fullmm,
898 unsigned int hugepage_shift);
899
900static void maybe_tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
901 pte_t *ptep, pte_t orig, int fullmm,
902 unsigned int hugepage_shift)
903{
904
905
906
907
908
909
910 if (likely(mm != &init_mm) && pte_accessible(mm, orig))
911 tlb_batch_add(mm, vaddr, ptep, orig, fullmm, hugepage_shift);
912}
913
914#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
915static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
916 unsigned long addr,
917 pmd_t *pmdp)
918{
919 pmd_t pmd = *pmdp;
920 set_pmd_at(mm, addr, pmdp, __pmd(0UL));
921 return pmd;
922}
923
924static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
925 pte_t *ptep, pte_t pte, int fullmm)
926{
927 pte_t orig = *ptep;
928
929 *ptep = pte;
930 maybe_tlb_batch_add(mm, addr, ptep, orig, fullmm, PAGE_SHIFT);
931}
932
933#define set_pte_at(mm,addr,ptep,pte) \
934 __set_pte_at((mm), (addr), (ptep), (pte), 0)
935
936#define pte_clear(mm,addr,ptep) \
937 set_pte_at((mm), (addr), (ptep), __pte(0UL))
938
939#define __HAVE_ARCH_PTE_CLEAR_NOT_PRESENT_FULL
940#define pte_clear_not_present_full(mm,addr,ptep,fullmm) \
941 __set_pte_at((mm), (addr), (ptep), __pte(0UL), (fullmm))
942
943#ifdef DCACHE_ALIASING_POSSIBLE
944#define __HAVE_ARCH_MOVE_PTE
945#define move_pte(pte, prot, old_addr, new_addr) \
946({ \
947 pte_t newpte = (pte); \
948 if (tlb_type != hypervisor && pte_present(pte)) { \
949 unsigned long this_pfn = pte_pfn(pte); \
950 \
951 if (pfn_valid(this_pfn) && \
952 (((old_addr) ^ (new_addr)) & (1 << 13))) \
953 flush_dcache_page_all(current->mm, \
954 pfn_to_page(this_pfn)); \
955 } \
956 newpte; \
957})
958#endif
959
960extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
961
962void paging_init(void);
963unsigned long find_ecache_flush_span(unsigned long size);
964
965struct seq_file;
966void mmu_info(struct seq_file *);
967
968struct vm_area_struct;
969void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
970#ifdef CONFIG_TRANSPARENT_HUGEPAGE
971void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
972 pmd_t *pmd);
973
974#define __HAVE_ARCH_PMDP_INVALIDATE
975extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
976 pmd_t *pmdp);
977
978#define __HAVE_ARCH_PGTABLE_DEPOSIT
979void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
980 pgtable_t pgtable);
981
982#define __HAVE_ARCH_PGTABLE_WITHDRAW
983pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
984#endif
985
986
987#define __swp_type(entry) (((entry).val >> PAGE_SHIFT) & 0xffUL)
988#define __swp_offset(entry) ((entry).val >> (PAGE_SHIFT + 8UL))
989#define __swp_entry(type, offset) \
990 ( (swp_entry_t) \
991 { \
992 (((long)(type) << PAGE_SHIFT) | \
993 ((long)(offset) << (PAGE_SHIFT + 8UL))) \
994 } )
995#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
996#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
997
998int page_in_phys_avail(unsigned long paddr);
999
1000
1001
1002
1003
1004#define MK_IOSPACE_PFN(space, pfn) (pfn | (space << (BITS_PER_LONG - 4)))
1005#define GET_IOSPACE(pfn) (pfn >> (BITS_PER_LONG - 4))
1006#define GET_PFN(pfn) (pfn & 0x0fffffffffffffffUL)
1007
1008int remap_pfn_range(struct vm_area_struct *, unsigned long, unsigned long,
1009 unsigned long, pgprot_t);
1010
1011void adi_restore_tags(struct mm_struct *mm, struct vm_area_struct *vma,
1012 unsigned long addr, pte_t pte);
1013
1014int adi_save_tags(struct mm_struct *mm, struct vm_area_struct *vma,
1015 unsigned long addr, pte_t oldpte);
1016
1017#define __HAVE_ARCH_DO_SWAP_PAGE
1018static inline void arch_do_swap_page(struct mm_struct *mm,
1019 struct vm_area_struct *vma,
1020 unsigned long addr,
1021 pte_t pte, pte_t oldpte)
1022{
1023
1024
1025
1026
1027 if (pte_none(oldpte))
1028 return;
1029
1030 if (adi_state.enabled && (pte_val(pte) & _PAGE_MCD_4V))
1031 adi_restore_tags(mm, vma, addr, pte);
1032}
1033
1034#define __HAVE_ARCH_UNMAP_ONE
1035static inline int arch_unmap_one(struct mm_struct *mm,
1036 struct vm_area_struct *vma,
1037 unsigned long addr, pte_t oldpte)
1038{
1039 if (adi_state.enabled && (pte_val(oldpte) & _PAGE_MCD_4V))
1040 return adi_save_tags(mm, vma, addr, oldpte);
1041 return 0;
1042}
1043
1044static inline int io_remap_pfn_range(struct vm_area_struct *vma,
1045 unsigned long from, unsigned long pfn,
1046 unsigned long size, pgprot_t prot)
1047{
1048 unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
1049 int space = GET_IOSPACE(pfn);
1050 unsigned long phys_base;
1051
1052 phys_base = offset | (((unsigned long) space) << 32UL);
1053
1054 return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
1055}
1056#define io_remap_pfn_range io_remap_pfn_range
1057
1058static inline unsigned long __untagged_addr(unsigned long start)
1059{
1060 if (adi_capable()) {
1061 long addr = start;
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073 return (addr << (long)adi_nbits()) >> (long)adi_nbits();
1074 }
1075
1076 return start;
1077}
1078#define untagged_addr(addr) \
1079 ((__typeof__(addr))(__untagged_addr((unsigned long)(addr))))
1080
1081static inline bool pte_access_permitted(pte_t pte, bool write)
1082{
1083 u64 prot;
1084
1085 if (tlb_type == hypervisor) {
1086 prot = _PAGE_PRESENT_4V | _PAGE_P_4V;
1087 if (write)
1088 prot |= _PAGE_WRITE_4V;
1089 } else {
1090 prot = _PAGE_PRESENT_4U | _PAGE_P_4U;
1091 if (write)
1092 prot |= _PAGE_WRITE_4U;
1093 }
1094
1095 return (pte_val(pte) & (prot | _PAGE_SPECIAL)) == prot;
1096}
1097#define pte_access_permitted pte_access_permitted
1098
1099#include <asm/tlbflush.h>
1100
1101
1102
1103
1104#define HAVE_ARCH_UNMAPPED_AREA
1105#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
1106
1107
1108
1109
1110unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
1111 unsigned long, unsigned long,
1112 unsigned long);
1113#define HAVE_ARCH_FB_UNMAPPED_AREA
1114
1115void sun4v_register_fault_status(void);
1116void sun4v_ktsb_register(void);
1117void __init cheetah_ecache_flush_init(void);
1118void sun4v_patch_tlb_handlers(void);
1119
1120extern unsigned long cmdline_memory_size;
1121
1122asmlinkage void do_sparc64_fault(struct pt_regs *regs);
1123
1124#ifdef CONFIG_HUGETLB_PAGE
1125
1126#define pud_leaf_size pud_leaf_size
1127extern unsigned long pud_leaf_size(pud_t pud);
1128
1129#define pmd_leaf_size pmd_leaf_size
1130extern unsigned long pmd_leaf_size(pmd_t pmd);
1131
1132#define pte_leaf_size pte_leaf_size
1133extern unsigned long pte_leaf_size(pte_t pte);
1134
1135#endif
1136
1137#endif
1138
1139#endif
1140