projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ab537dca AK |
1 | #ifndef _ASM_POWERPC_BOOK3S_64_HASH_4K_H |
| 2 | #define _ASM_POWERPC_BOOK3S_64_HASH_4K_H | |
| 3 | /* | |
| 4 | * Entries per page directory level. The PTE level must use a 64b record | |
| 5 | * for each page table entry. The PMD and PGD level use a 32b record for | |
| 6 | * each entry by assuming that each entry is page aligned. | |
| 7 | */ | |
| dd1842a2 AK |
8 | #define H_PTE_INDEX_SIZE 9 |
| 9 | #define H_PMD_INDEX_SIZE 7 | |
| 10 | #define H_PUD_INDEX_SIZE 9 | |
| 11 | #define H_PGD_INDEX_SIZE 9 | |
| ab537dca AK |
12 | |
| 13 | #ifndef __ASSEMBLY__ | |
| dd1842a2 AK |
14 | #define H_PTE_TABLE_SIZE (sizeof(pte_t) << H_PTE_INDEX_SIZE) |
| 15 | #define H_PMD_TABLE_SIZE (sizeof(pmd_t) << H_PMD_INDEX_SIZE) | |
| 16 | #define H_PUD_TABLE_SIZE (sizeof(pud_t) << H_PUD_INDEX_SIZE) | |
| 17 | #define H_PGD_TABLE_SIZE (sizeof(pgd_t) << H_PGD_INDEX_SIZE) | |
| ab537dca AK |
18 | |
| 19 | /* With 4k base page size, hugepage PTEs go at the PMD level */ | |
| 20 | #define MIN_HUGEPTE_SHIFT PMD_SHIFT | |
| 21 | ||
| c605782b | 22 | /* PTE flags to conserve for HPTE identification */ |
| 945537df AK |
23 | #define _PAGE_HPTEFLAGS (H_PAGE_BUSY | H_PAGE_HASHPTE | \ |
| 24 | H_PAGE_F_SECOND | H_PAGE_F_GIX) | |
| 25 | /* | |
| 26 | * Not supported by 4k linux page size | |
| 27 | */ | |
| 28 | #define H_PAGE_4K_PFN 0x0 | |
| 29 | #define H_PAGE_THP_HUGE 0x0 | |
| 30 | #define H_PAGE_COMBO 0x0 | |
| 5ed7ecd0 AK |
31 | #define H_PTE_FRAG_NR 0 |
| 32 | #define H_PTE_FRAG_SIZE_SHIFT 0 | |
| ab537dca | 33 | /* |
| 368ced78 | 34 | * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range() |
| ab537dca | 35 | */ |
| ab537dca AK |
36 | #define remap_4k_pfn(vma, addr, pfn, prot) \ |
| 37 | remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, (prot)) | |
| 38 | ||
| 26a344ae | 39 | #ifdef CONFIG_HUGETLB_PAGE |
| c0a6c719 | 40 | static inline int hash__hugepd_ok(hugepd_t hpd) |
| 26a344ae AK |
41 | { |
| 42 | /* | |
| 6a119eae AK |
43 | * if it is not a pte and have hugepd shift mask |
| 44 | * set, then it is a hugepd directory pointer | |
| 26a344ae | 45 | */ |
| 6a119eae AK |
46 | if (!(hpd.pd & _PAGE_PTE) && |
| 47 | ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)) | |
| 48 | return true; | |
| 49 | return false; | |
| 26a344ae | 50 | } |
| 26a344ae AK |
51 | #endif |
| 52 | ||
| ab537dca AK |
53 | #endif /* !__ASSEMBLY__ */ |
| 54 | ||
| 55 | #endif /* _ASM_POWERPC_BOOK3S_64_HASH_4K_H */ |