1
2
3
4
5
6
7
8
9#ifndef _SPARC64_PGTABLE_H
10#define _SPARC64_PGTABLE_H
11
12
13
14
15
16#include <asm-generic/5level-fixup.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
239#define mm_zero_struct_page(pp) do { \
240 unsigned long *_pp = (void *)(pp); \
241 \
242 \
243 BUILD_BUG_ON(sizeof(struct page) & 7); \
244 BUILD_BUG_ON(sizeof(struct page) < 64); \
245 BUILD_BUG_ON(sizeof(struct page) > 80); \
246 \
247 switch (sizeof(struct page)) { \
248 case 80: \
249 _pp[9] = 0; \
250 case 72: \
251 _pp[8] = 0; \
252 default: \
253 _pp[7] = 0; \
254 _pp[6] = 0; \
255 _pp[5] = 0; \
256 _pp[4] = 0; \
257 _pp[3] = 0; \
258 _pp[2] = 0; \
259 _pp[1] = 0; \
260 _pp[0] = 0; \
261 } \
262} while (0)
263
264
265
266
267
268
269static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
270{
271 unsigned long paddr = pfn << PAGE_SHIFT;
272
273 BUILD_BUG_ON(_PAGE_SZBITS_4U != 0UL || _PAGE_SZBITS_4V != 0UL);
274 return __pte(paddr | pgprot_val(prot));
275}
276#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
277
278#ifdef CONFIG_TRANSPARENT_HUGEPAGE
279static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
280{
281 pte_t pte = pfn_pte(page_nr, pgprot);
282
283 return __pmd(pte_val(pte));
284}
285#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot))
286#endif
287
288
289static inline unsigned long pte_pfn(pte_t pte)
290{
291 unsigned long ret;
292
293 __asm__ __volatile__(
294 "\n661: sllx %1, %2, %0\n"
295 " srlx %0, %3, %0\n"
296 " .section .sun4v_2insn_patch, \"ax\"\n"
297 " .word 661b\n"
298 " sllx %1, %4, %0\n"
299 " srlx %0, %5, %0\n"
300 " .previous\n"
301 : "=r" (ret)
302 : "r" (pte_val(pte)),
303 "i" (21), "i" (21 + PAGE_SHIFT),
304 "i" (8), "i" (8 + PAGE_SHIFT));
305
306 return ret;
307}
308#define pte_page(x) pfn_to_page(pte_pfn(x))
309
310static inline pte_t pte_modify(pte_t pte, pgprot_t prot)
311{
312 unsigned long mask, tmp;
313
314
315
316
317
318
319
320
321
322
323
324 BUILD_BUG_ON(_PAGE_SZBITS_4U != 0UL || _PAGE_SZBITS_4V != 0UL);
325 __asm__ __volatile__(
326 "\n661: sethi %%uhi(%2), %1\n"
327 " sethi %%hi(%2), %0\n"
328 "\n662: or %1, %%ulo(%2), %1\n"
329 " or %0, %%lo(%2), %0\n"
330 "\n663: sllx %1, 32, %1\n"
331 " or %0, %1, %0\n"
332 " .section .sun4v_2insn_patch, \"ax\"\n"
333 " .word 661b\n"
334 " sethi %%uhi(%3), %1\n"
335 " sethi %%hi(%3), %0\n"
336 " .word 662b\n"
337 " or %1, %%ulo(%3), %1\n"
338 " or %0, %%lo(%3), %0\n"
339 " .word 663b\n"
340 " sllx %1, 32, %1\n"
341 " or %0, %1, %0\n"
342 " .previous\n"
343 " .section .sun_m7_2insn_patch, \"ax\"\n"
344 " .word 661b\n"
345 " sethi %%uhi(%4), %1\n"
346 " sethi %%hi(%4), %0\n"
347 " .word 662b\n"
348 " or %1, %%ulo(%4), %1\n"
349 " or %0, %%lo(%4), %0\n"
350 " .word 663b\n"
351 " sllx %1, 32, %1\n"
352 " or %0, %1, %0\n"
353 " .previous\n"
354 : "=r" (mask), "=r" (tmp)
355 : "i" (_PAGE_PADDR_4U | _PAGE_MODIFIED_4U | _PAGE_ACCESSED_4U |
356 _PAGE_CP_4U | _PAGE_CV_4U | _PAGE_E_4U |
357 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4U),
358 "i" (_PAGE_PADDR_4V | _PAGE_MODIFIED_4V | _PAGE_ACCESSED_4V |
359 _PAGE_CP_4V | _PAGE_CV_4V | _PAGE_E_4V |
360 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4V),
361 "i" (_PAGE_PADDR_4V | _PAGE_MODIFIED_4V | _PAGE_ACCESSED_4V |
362 _PAGE_CP_4V | _PAGE_E_4V |
363 _PAGE_SPECIAL | _PAGE_PMD_HUGE | _PAGE_SZALL_4V));
364
365 return __pte((pte_val(pte) & mask) | (pgprot_val(prot) & ~mask));
366}
367
368#ifdef CONFIG_TRANSPARENT_HUGEPAGE
369static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
370{
371 pte_t pte = __pte(pmd_val(pmd));
372
373 pte = pte_modify(pte, newprot);
374
375 return __pmd(pte_val(pte));
376}
377#endif
378
379static inline pgprot_t pgprot_noncached(pgprot_t prot)
380{
381 unsigned long val = pgprot_val(prot);
382
383 __asm__ __volatile__(
384 "\n661: andn %0, %2, %0\n"
385 " or %0, %3, %0\n"
386 " .section .sun4v_2insn_patch, \"ax\"\n"
387 " .word 661b\n"
388 " andn %0, %4, %0\n"
389 " or %0, %5, %0\n"
390 " .previous\n"
391 " .section .sun_m7_2insn_patch, \"ax\"\n"
392 " .word 661b\n"
393 " andn %0, %6, %0\n"
394 " or %0, %5, %0\n"
395 " .previous\n"
396 : "=r" (val)
397 : "0" (val), "i" (_PAGE_CP_4U | _PAGE_CV_4U), "i" (_PAGE_E_4U),
398 "i" (_PAGE_CP_4V | _PAGE_CV_4V), "i" (_PAGE_E_4V),
399 "i" (_PAGE_CP_4V));
400
401 return __pgprot(val);
402}
403
404
405
406
407#define pgprot_noncached pgprot_noncached
408
409#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
410extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
411 struct page *page, int writable);
412#define arch_make_huge_pte arch_make_huge_pte
413static inline unsigned long __pte_default_huge_mask(void)
414{
415 unsigned long mask;
416
417 __asm__ __volatile__(
418 "\n661: sethi %%uhi(%1), %0\n"
419 " sllx %0, 32, %0\n"
420 " .section .sun4v_2insn_patch, \"ax\"\n"
421 " .word 661b\n"
422 " mov %2, %0\n"
423 " nop\n"
424 " .previous\n"
425 : "=r" (mask)
426 : "i" (_PAGE_SZHUGE_4U), "i" (_PAGE_SZHUGE_4V));
427
428 return mask;
429}
430
431static inline pte_t pte_mkhuge(pte_t pte)
432{
433 return __pte(pte_val(pte) | __pte_default_huge_mask());
434}
435
436static inline bool is_default_hugetlb_pte(pte_t pte)
437{
438 unsigned long mask = __pte_default_huge_mask();
439
440 return (pte_val(pte) & mask) == mask;
441}
442
443static inline bool is_hugetlb_pmd(pmd_t pmd)
444{
445 return !!(pmd_val(pmd) & _PAGE_PMD_HUGE);
446}
447
448static inline bool is_hugetlb_pud(pud_t pud)
449{
450 return !!(pud_val(pud) & _PAGE_PUD_HUGE);
451}
452
453#ifdef CONFIG_TRANSPARENT_HUGEPAGE
454static inline pmd_t pmd_mkhuge(pmd_t pmd)
455{
456 pte_t pte = __pte(pmd_val(pmd));
457
458 pte = pte_mkhuge(pte);
459 pte_val(pte) |= _PAGE_PMD_HUGE;
460
461 return __pmd(pte_val(pte));
462}
463#endif
464#else
465static inline bool is_hugetlb_pte(pte_t pte)
466{
467 return false;
468}
469#endif
470
471static inline pte_t pte_mkdirty(pte_t pte)
472{
473 unsigned long val = pte_val(pte), tmp;
474
475 __asm__ __volatile__(
476 "\n661: or %0, %3, %0\n"
477 " nop\n"
478 "\n662: nop\n"
479 " nop\n"
480 " .section .sun4v_2insn_patch, \"ax\"\n"
481 " .word 661b\n"
482 " sethi %%uhi(%4), %1\n"
483 " sllx %1, 32, %1\n"
484 " .word 662b\n"
485 " or %1, %%lo(%4), %1\n"
486 " or %0, %1, %0\n"
487 " .previous\n"
488 : "=r" (val), "=r" (tmp)
489 : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U),
490 "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V));
491
492 return __pte(val);
493}
494
495static inline pte_t pte_mkclean(pte_t pte)
496{
497 unsigned long val = pte_val(pte), tmp;
498
499 __asm__ __volatile__(
500 "\n661: andn %0, %3, %0\n"
501 " nop\n"
502 "\n662: nop\n"
503 " nop\n"
504 " .section .sun4v_2insn_patch, \"ax\"\n"
505 " .word 661b\n"
506 " sethi %%uhi(%4), %1\n"
507 " sllx %1, 32, %1\n"
508 " .word 662b\n"
509 " or %1, %%lo(%4), %1\n"
510 " andn %0, %1, %0\n"
511 " .previous\n"
512 : "=r" (val), "=r" (tmp)
513 : "0" (val), "i" (_PAGE_MODIFIED_4U | _PAGE_W_4U),
514 "i" (_PAGE_MODIFIED_4V | _PAGE_W_4V));
515
516 return __pte(val);
517}
518
519static inline pte_t pte_mkwrite(pte_t pte)
520{
521 unsigned long val = pte_val(pte), mask;
522
523 __asm__ __volatile__(
524 "\n661: mov %1, %0\n"
525 " nop\n"
526 " .section .sun4v_2insn_patch, \"ax\"\n"
527 " .word 661b\n"
528 " sethi %%uhi(%2), %0\n"
529 " sllx %0, 32, %0\n"
530 " .previous\n"
531 : "=r" (mask)
532 : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V));
533
534 return __pte(val | mask);
535}
536
537static inline pte_t pte_wrprotect(pte_t pte)
538{
539 unsigned long val = pte_val(pte), tmp;
540
541 __asm__ __volatile__(
542 "\n661: andn %0, %3, %0\n"
543 " nop\n"
544 "\n662: nop\n"
545 " nop\n"
546 " .section .sun4v_2insn_patch, \"ax\"\n"
547 " .word 661b\n"
548 " sethi %%uhi(%4), %1\n"
549 " sllx %1, 32, %1\n"
550 " .word 662b\n"
551 " or %1, %%lo(%4), %1\n"
552 " andn %0, %1, %0\n"
553 " .previous\n"
554 : "=r" (val), "=r" (tmp)
555 : "0" (val), "i" (_PAGE_WRITE_4U | _PAGE_W_4U),
556 "i" (_PAGE_WRITE_4V | _PAGE_W_4V));
557
558 return __pte(val);
559}
560
561static inline pte_t pte_mkold(pte_t pte)
562{
563 unsigned long mask;
564
565 __asm__ __volatile__(
566 "\n661: mov %1, %0\n"
567 " nop\n"
568 " .section .sun4v_2insn_patch, \"ax\"\n"
569 " .word 661b\n"
570 " sethi %%uhi(%2), %0\n"
571 " sllx %0, 32, %0\n"
572 " .previous\n"
573 : "=r" (mask)
574 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
575
576 mask |= _PAGE_R;
577
578 return __pte(pte_val(pte) & ~mask);
579}
580
581static inline pte_t pte_mkyoung(pte_t pte)
582{
583 unsigned long mask;
584
585 __asm__ __volatile__(
586 "\n661: mov %1, %0\n"
587 " nop\n"
588 " .section .sun4v_2insn_patch, \"ax\"\n"
589 " .word 661b\n"
590 " sethi %%uhi(%2), %0\n"
591 " sllx %0, 32, %0\n"
592 " .previous\n"
593 : "=r" (mask)
594 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
595
596 mask |= _PAGE_R;
597
598 return __pte(pte_val(pte) | mask);
599}
600
601static inline pte_t pte_mkspecial(pte_t pte)
602{
603 pte_val(pte) |= _PAGE_SPECIAL;
604 return pte;
605}
606
607static inline pte_t pte_mkmcd(pte_t pte)
608{
609 pte_val(pte) |= _PAGE_MCD_4V;
610 return pte;
611}
612
613static inline pte_t pte_mknotmcd(pte_t pte)
614{
615 pte_val(pte) &= ~_PAGE_MCD_4V;
616 return pte;
617}
618
619static inline unsigned long pte_young(pte_t pte)
620{
621 unsigned long mask;
622
623 __asm__ __volatile__(
624 "\n661: mov %1, %0\n"
625 " nop\n"
626 " .section .sun4v_2insn_patch, \"ax\"\n"
627 " .word 661b\n"
628 " sethi %%uhi(%2), %0\n"
629 " sllx %0, 32, %0\n"
630 " .previous\n"
631 : "=r" (mask)
632 : "i" (_PAGE_ACCESSED_4U), "i" (_PAGE_ACCESSED_4V));
633
634 return (pte_val(pte) & mask);
635}
636
637static inline unsigned long pte_dirty(pte_t pte)
638{
639 unsigned long mask;
640
641 __asm__ __volatile__(
642 "\n661: mov %1, %0\n"
643 " nop\n"
644 " .section .sun4v_2insn_patch, \"ax\"\n"
645 " .word 661b\n"
646 " sethi %%uhi(%2), %0\n"
647 " sllx %0, 32, %0\n"
648 " .previous\n"
649 : "=r" (mask)
650 : "i" (_PAGE_MODIFIED_4U), "i" (_PAGE_MODIFIED_4V));
651
652 return (pte_val(pte) & mask);
653}
654
655static inline unsigned long pte_write(pte_t pte)
656{
657 unsigned long mask;
658
659 __asm__ __volatile__(
660 "\n661: mov %1, %0\n"
661 " nop\n"
662 " .section .sun4v_2insn_patch, \"ax\"\n"
663 " .word 661b\n"
664 " sethi %%uhi(%2), %0\n"
665 " sllx %0, 32, %0\n"
666 " .previous\n"
667 : "=r" (mask)
668 : "i" (_PAGE_WRITE_4U), "i" (_PAGE_WRITE_4V));
669
670 return (pte_val(pte) & mask);
671}
672
673static inline unsigned long pte_exec(pte_t pte)
674{
675 unsigned long mask;
676
677 __asm__ __volatile__(
678 "\n661: sethi %%hi(%1), %0\n"
679 " .section .sun4v_1insn_patch, \"ax\"\n"
680 " .word 661b\n"
681 " mov %2, %0\n"
682 " .previous\n"
683 : "=r" (mask)
684 : "i" (_PAGE_EXEC_4U), "i" (_PAGE_EXEC_4V));
685
686 return (pte_val(pte) & mask);
687}
688
689static inline unsigned long pte_present(pte_t pte)
690{
691 unsigned long val = pte_val(pte);
692
693 __asm__ __volatile__(
694 "\n661: and %0, %2, %0\n"
695 " .section .sun4v_1insn_patch, \"ax\"\n"
696 " .word 661b\n"
697 " and %0, %3, %0\n"
698 " .previous\n"
699 : "=r" (val)
700 : "0" (val), "i" (_PAGE_PRESENT_4U), "i" (_PAGE_PRESENT_4V));
701
702 return val;
703}
704
705#define pte_accessible pte_accessible
706static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
707{
708 return pte_val(a) & _PAGE_VALID;
709}
710
711static inline unsigned long pte_special(pte_t pte)
712{
713 return pte_val(pte) & _PAGE_SPECIAL;
714}
715
716static inline unsigned long pmd_large(pmd_t pmd)
717{
718 pte_t pte = __pte(pmd_val(pmd));
719
720 return pte_val(pte) & _PAGE_PMD_HUGE;
721}
722
723static inline unsigned long pmd_pfn(pmd_t pmd)
724{
725 pte_t pte = __pte(pmd_val(pmd));
726
727 return pte_pfn(pte);
728}
729
730#define pmd_write pmd_write
731static inline unsigned long pmd_write(pmd_t pmd)
732{
733 pte_t pte = __pte(pmd_val(pmd));
734
735 return pte_write(pte);
736}
737
738#define pud_write(pud) pte_write(__pte(pud_val(pud)))
739
740#ifdef CONFIG_TRANSPARENT_HUGEPAGE
741static inline unsigned long pmd_dirty(pmd_t pmd)
742{
743 pte_t pte = __pte(pmd_val(pmd));
744
745 return pte_dirty(pte);
746}
747
748static inline unsigned long pmd_young(pmd_t pmd)
749{
750 pte_t pte = __pte(pmd_val(pmd));
751
752 return pte_young(pte);
753}
754
755static inline unsigned long pmd_trans_huge(pmd_t pmd)
756{
757 pte_t pte = __pte(pmd_val(pmd));
758
759 return pte_val(pte) & _PAGE_PMD_HUGE;
760}
761
762static inline pmd_t pmd_mkold(pmd_t pmd)
763{
764 pte_t pte = __pte(pmd_val(pmd));
765
766 pte = pte_mkold(pte);
767
768 return __pmd(pte_val(pte));
769}
770
771static inline pmd_t pmd_wrprotect(pmd_t pmd)
772{
773 pte_t pte = __pte(pmd_val(pmd));
774
775 pte = pte_wrprotect(pte);
776
777 return __pmd(pte_val(pte));
778}
779
780static inline pmd_t pmd_mkdirty(pmd_t pmd)
781{
782 pte_t pte = __pte(pmd_val(pmd));
783
784 pte = pte_mkdirty(pte);
785
786 return __pmd(pte_val(pte));
787}
788
789static inline pmd_t pmd_mkclean(pmd_t pmd)
790{
791 pte_t pte = __pte(pmd_val(pmd));
792
793 pte = pte_mkclean(pte);
794
795 return __pmd(pte_val(pte));
796}
797
798static inline pmd_t pmd_mkyoung(pmd_t pmd)
799{
800 pte_t pte = __pte(pmd_val(pmd));
801
802 pte = pte_mkyoung(pte);
803
804 return __pmd(pte_val(pte));
805}
806
807static inline pmd_t pmd_mkwrite(pmd_t pmd)
808{
809 pte_t pte = __pte(pmd_val(pmd));
810
811 pte = pte_mkwrite(pte);
812
813 return __pmd(pte_val(pte));
814}
815
816static inline pgprot_t pmd_pgprot(pmd_t entry)
817{
818 unsigned long val = pmd_val(entry);
819
820 return __pgprot(val);
821}
822#endif
823
824static inline int pmd_present(pmd_t pmd)
825{
826 return pmd_val(pmd) != 0UL;
827}
828
829#define pmd_none(pmd) (!pmd_val(pmd))
830
831
832
833
834
835
836
837#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
838
839#define pud_none(pud) (!pud_val(pud))
840
841#define pud_bad(pud) (pud_val(pud) & ~PAGE_MASK)
842
843#define pgd_none(pgd) (!pgd_val(pgd))
844
845#define pgd_bad(pgd) (pgd_val(pgd) & ~PAGE_MASK)
846
847#ifdef CONFIG_TRANSPARENT_HUGEPAGE
848void set_pmd_at(struct mm_struct *mm, unsigned long addr,
849 pmd_t *pmdp, pmd_t pmd);
850#else
851static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
852 pmd_t *pmdp, pmd_t pmd)
853{
854 *pmdp = pmd;
855}
856#endif
857
858static inline void pmd_set(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
859{
860 unsigned long val = __pa((unsigned long) (ptep));
861
862 pmd_val(*pmdp) = val;
863}
864
865#define pud_set(pudp, pmdp) \
866 (pud_val(*(pudp)) = (__pa((unsigned long) (pmdp))))
867static inline unsigned long __pmd_page(pmd_t pmd)
868{
869 pte_t pte = __pte(pmd_val(pmd));
870 unsigned long pfn;
871
872 pfn = pte_pfn(pte);
873
874 return ((unsigned long) __va(pfn << PAGE_SHIFT));
875}
876
877static inline unsigned long pud_page_vaddr(pud_t pud)
878{
879 pte_t pte = __pte(pud_val(pud));
880 unsigned long pfn;
881
882 pfn = pte_pfn(pte);
883
884 return ((unsigned long) __va(pfn << PAGE_SHIFT));
885}
886
887#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
888#define pud_page(pud) virt_to_page((void *)pud_page_vaddr(pud))
889#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL)
890#define pud_present(pud) (pud_val(pud) != 0U)
891#define pud_clear(pudp) (pud_val(*(pudp)) = 0UL)
892#define pgd_page_vaddr(pgd) \
893 ((unsigned long) __va(pgd_val(pgd)))
894#define pgd_present(pgd) (pgd_val(pgd) != 0U)
895#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL)
896
897static inline unsigned long pud_large(pud_t pud)
898{
899 pte_t pte = __pte(pud_val(pud));
900
901 return pte_val(pte) & _PAGE_PMD_HUGE;
902}
903
904static inline unsigned long pud_pfn(pud_t pud)
905{
906 pte_t pte = __pte(pud_val(pud));
907
908 return pte_pfn(pte);
909}
910
911
912#define pte_none(pte) (!pte_val(pte))
913
914#define pgd_set(pgdp, pudp) \
915 (pgd_val(*(pgdp)) = (__pa((unsigned long) (pudp))))
916
917
918#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
919#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
920
921
922#define pgd_offset_k(address) pgd_offset(&init_mm, address)
923
924
925#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
926#define pud_offset(pgdp, address) \
927 ((pud_t *) pgd_page_vaddr(*(pgdp)) + pud_index(address))
928
929
930#define pmd_offset(pudp, address) \
931 ((pmd_t *) pud_page_vaddr(*(pudp)) + \
932 (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))
933
934
935#define pte_index(dir, address) \
936 ((pte_t *) __pmd_page(*(dir)) + \
937 ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
938#define pte_offset_kernel pte_index
939#define pte_offset_map pte_index
940#define pte_unmap(pte) do { } while (0)
941
942
943extern struct mm_struct init_mm;
944
945
946void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
947 pte_t *ptep, pte_t orig, int fullmm,
948 unsigned int hugepage_shift);
949
950static void maybe_tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
951 pte_t *ptep, pte_t orig, int fullmm,
952 unsigned int hugepage_shift)
953{
954
955
956
957
958
959
960 if (likely(mm != &init_mm) && pte_accessible(mm, orig))
961 tlb_batch_add(mm, vaddr, ptep, orig, fullmm, hugepage_shift);
962}
963
964#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
965static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
966 unsigned long addr,
967 pmd_t *pmdp)
968{
969 pmd_t pmd = *pmdp;
970 set_pmd_at(mm, addr, pmdp, __pmd(0UL));
971 return pmd;
972}
973
974static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
975 pte_t *ptep, pte_t pte, int fullmm)
976{
977 pte_t orig = *ptep;
978
979 *ptep = pte;
980 maybe_tlb_batch_add(mm, addr, ptep, orig, fullmm, PAGE_SHIFT);
981}
982
983#define set_pte_at(mm,addr,ptep,pte) \
984 __set_pte_at((mm), (addr), (ptep), (pte), 0)
985
986#define pte_clear(mm,addr,ptep) \
987 set_pte_at((mm), (addr), (ptep), __pte(0UL))
988
989#define __HAVE_ARCH_PTE_CLEAR_NOT_PRESENT_FULL
990#define pte_clear_not_present_full(mm,addr,ptep,fullmm) \
991 __set_pte_at((mm), (addr), (ptep), __pte(0UL), (fullmm))
992
993#ifdef DCACHE_ALIASING_POSSIBLE
994#define __HAVE_ARCH_MOVE_PTE
995#define move_pte(pte, prot, old_addr, new_addr) \
996({ \
997 pte_t newpte = (pte); \
998 if (tlb_type != hypervisor && pte_present(pte)) { \
999 unsigned long this_pfn = pte_pfn(pte); \
1000 \
1001 if (pfn_valid(this_pfn) && \
1002 (((old_addr) ^ (new_addr)) & (1 << 13))) \
1003 flush_dcache_page_all(current->mm, \
1004 pfn_to_page(this_pfn)); \
1005 } \
1006 newpte; \
1007})
1008#endif
1009
1010extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
1011
1012void paging_init(void);
1013unsigned long find_ecache_flush_span(unsigned long size);
1014
1015struct seq_file;
1016void mmu_info(struct seq_file *);
1017
1018struct vm_area_struct;
1019void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
1020#ifdef CONFIG_TRANSPARENT_HUGEPAGE
1021void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
1022 pmd_t *pmd);
1023
1024#define __HAVE_ARCH_PMDP_INVALIDATE
1025extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
1026 pmd_t *pmdp);
1027
1028#define __HAVE_ARCH_PGTABLE_DEPOSIT
1029void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
1030 pgtable_t pgtable);
1031
1032#define __HAVE_ARCH_PGTABLE_WITHDRAW
1033pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
1034#endif
1035
1036
1037#define __swp_type(entry) (((entry).val >> PAGE_SHIFT) & 0xffUL)
1038#define __swp_offset(entry) ((entry).val >> (PAGE_SHIFT + 8UL))
1039#define __swp_entry(type, offset) \
1040 ( (swp_entry_t) \
1041 { \
1042 (((long)(type) << PAGE_SHIFT) | \
1043 ((long)(offset) << (PAGE_SHIFT + 8UL))) \
1044 } )
1045#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
1046#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
1047
1048int page_in_phys_avail(unsigned long paddr);
1049
1050
1051
1052
1053
1054#define MK_IOSPACE_PFN(space, pfn) (pfn | (space << (BITS_PER_LONG - 4)))
1055#define GET_IOSPACE(pfn) (pfn >> (BITS_PER_LONG - 4))
1056#define GET_PFN(pfn) (pfn & 0x0fffffffffffffffUL)
1057
1058int remap_pfn_range(struct vm_area_struct *, unsigned long, unsigned long,
1059 unsigned long, pgprot_t);
1060
1061void adi_restore_tags(struct mm_struct *mm, struct vm_area_struct *vma,
1062 unsigned long addr, pte_t pte);
1063
1064int adi_save_tags(struct mm_struct *mm, struct vm_area_struct *vma,
1065 unsigned long addr, pte_t oldpte);
1066
1067#define __HAVE_ARCH_DO_SWAP_PAGE
1068static inline void arch_do_swap_page(struct mm_struct *mm,
1069 struct vm_area_struct *vma,
1070 unsigned long addr,
1071 pte_t pte, pte_t oldpte)
1072{
1073
1074
1075
1076
1077 if (pte_none(oldpte))
1078 return;
1079
1080 if (adi_state.enabled && (pte_val(pte) & _PAGE_MCD_4V))
1081 adi_restore_tags(mm, vma, addr, pte);
1082}
1083
1084#define __HAVE_ARCH_UNMAP_ONE
1085static inline int arch_unmap_one(struct mm_struct *mm,
1086 struct vm_area_struct *vma,
1087 unsigned long addr, pte_t oldpte)
1088{
1089 if (adi_state.enabled && (pte_val(oldpte) & _PAGE_MCD_4V))
1090 return adi_save_tags(mm, vma, addr, oldpte);
1091 return 0;
1092}
1093
1094static inline int io_remap_pfn_range(struct vm_area_struct *vma,
1095 unsigned long from, unsigned long pfn,
1096 unsigned long size, pgprot_t prot)
1097{
1098 unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
1099 int space = GET_IOSPACE(pfn);
1100 unsigned long phys_base;
1101
1102 phys_base = offset | (((unsigned long) space) << 32UL);
1103
1104 return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
1105}
1106#define io_remap_pfn_range io_remap_pfn_range
1107
1108#include <asm/tlbflush.h>
1109#include <asm-generic/pgtable.h>
1110
1111
1112
1113
1114#define HAVE_ARCH_UNMAPPED_AREA
1115#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
1116
1117
1118
1119
1120unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
1121 unsigned long, unsigned long,
1122 unsigned long);
1123#define HAVE_ARCH_FB_UNMAPPED_AREA
1124
1125void pgtable_cache_init(void);
1126void sun4v_register_fault_status(void);
1127void sun4v_ktsb_register(void);
1128void __init cheetah_ecache_flush_init(void);
1129void sun4v_patch_tlb_handlers(void);
1130
1131extern unsigned long cmdline_memory_size;
1132
1133asmlinkage void do_sparc64_fault(struct pt_regs *regs);
1134
1135#endif
1136
1137#endif
1138