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047ea784 PM |
1 | #ifndef _ASM_POWERPC_PGTABLE_H |
2 | #define _ASM_POWERPC_PGTABLE_H | |
3 | ||
9c709f3b | 4 | #ifndef __ASSEMBLY__ |
c34a51ce | 5 | #include <linux/mmdebug.h> |
1c98025c | 6 | #include <linux/mmzone.h> |
9c709f3b DG |
7 | #include <asm/processor.h> /* For TASK_SIZE */ |
8 | #include <asm/mmu.h> | |
9 | #include <asm/page.h> | |
8d30c14c | 10 | |
9c709f3b | 11 | struct mm_struct; |
8d30c14c | 12 | |
9c709f3b DG |
13 | #endif /* !__ASSEMBLY__ */ |
14 | ||
3dfcb315 AK |
15 | #ifdef CONFIG_PPC_BOOK3S |
16 | #include <asm/book3s/pgtable.h> | |
17 | #else | |
17ed9e31 | 18 | #include <asm/nohash/pgtable.h> |
3dfcb315 | 19 | #endif /* !CONFIG_PPC_BOOK3S */ |
1da177e4 | 20 | |
1da177e4 | 21 | #ifndef __ASSEMBLY__ |
64b3d0e8 | 22 | |
78f1dbde AK |
23 | #include <asm/tlbflush.h> |
24 | ||
71087002 BH |
25 | /* Keep these as a macros to avoid include dependency mess */ |
26 | #define pte_page(x) pfn_to_page(pte_pfn(x)) | |
27 | #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) | |
28 | ||
9c709f3b DG |
29 | /* |
30 | * ZERO_PAGE is a global shared page that is always zero: used | |
31 | * for zero-mapped memory areas etc.. | |
32 | */ | |
33 | extern unsigned long empty_zero_page[]; | |
34 | #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) | |
35 | ||
36 | extern pgd_t swapper_pg_dir[]; | |
37 | ||
1c98025c SW |
38 | void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn); |
39 | int dma_pfn_limit_to_zone(u64 pfn_limit); | |
9c709f3b DG |
40 | extern void paging_init(void); |
41 | ||
42 | /* | |
43 | * kern_addr_valid is intended to indicate whether an address is a valid | |
44 | * kernel address. Most 32-bit archs define it as always true (like this) | |
45 | * but most 64-bit archs actually perform a test. What should we do here? | |
46 | */ | |
47 | #define kern_addr_valid(addr) (1) | |
48 | ||
1da177e4 | 49 | #include <asm-generic/pgtable.h> |
1e3519f8 BH |
50 | |
51 | ||
52 | /* | |
53 | * This gets called at the end of handling a page fault, when | |
54 | * the kernel has put a new PTE into the page table for the process. | |
55 | * We use it to ensure coherency between the i-cache and d-cache | |
56 | * for the page which has just been mapped in. | |
57 | * On machines which use an MMU hash table, we use this to put a | |
58 | * corresponding HPTE into the hash table ahead of time, instead of | |
59 | * waiting for the inevitable extra hash-table miss exception. | |
60 | */ | |
4b3073e1 | 61 | extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *); |
1e3519f8 | 62 | |
e2b3d202 | 63 | extern int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, |
b30e7590 AK |
64 | unsigned long end, int write, |
65 | struct page **pages, int *nr); | |
074c2eae AK |
66 | #ifndef CONFIG_TRANSPARENT_HUGEPAGE |
67 | #define pmd_large(pmd) 0 | |
074c2eae | 68 | #endif |
691e95fd | 69 | pte_t *__find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea, |
891121e6 | 70 | bool *is_thp, unsigned *shift); |
691e95fd | 71 | static inline pte_t *find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea, |
891121e6 | 72 | bool *is_thp, unsigned *shift) |
691e95fd | 73 | { |
9af3f56b AK |
74 | VM_WARN(!arch_irqs_disabled(), |
75 | "%s called with irq enabled\n", __func__); | |
891121e6 | 76 | return __find_linux_pte_or_hugepte(pgdir, ea, is_thp, shift); |
691e95fd | 77 | } |
e9ab1a1c AK |
78 | |
79 | unsigned long vmalloc_to_phys(void *vmalloc_addr); | |
80 | ||
9b081e10 CL |
81 | void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); |
82 | void pgtable_cache_init(void); | |
029d9252 ME |
83 | |
84 | #ifdef CONFIG_STRICT_KERNEL_RWX | |
85 | void mark_initmem_nx(void); | |
86 | #else | |
87 | static inline void mark_initmem_nx(void) { } | |
88 | #endif | |
89 | ||
1da177e4 LT |
90 | #endif /* __ASSEMBLY__ */ |
91 | ||
047ea784 | 92 | #endif /* _ASM_POWERPC_PGTABLE_H */ |