1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H 3 #define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H 4 /* 5 * hash 4k can't share hugetlb and also doesn't support THP 6 */ 7 #ifndef __ASSEMBLY__ 8 #ifdef CONFIG_HUGETLB_PAGE 9 static inline int pmd_huge(pmd_t pmd) 10 { 11 /* 12 * leaf pte for huge page 13 */ 14 if (radix_enabled()) 15 return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); 16 return 0; 17 } 18 19 static inline int pud_huge(pud_t pud) 20 { 21 /* 22 * leaf pte for huge page 23 */ 24 if (radix_enabled()) 25 return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); 26 return 0; 27 } 28 29 static inline int pgd_huge(pgd_t pgd) 30 { 31 /* 32 * leaf pte for huge page 33 */ 34 if (radix_enabled()) 35 return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); 36 return 0; 37 } 38 #define pgd_huge pgd_huge 39 /* 40 * With radix , we have hugepage ptes in the pud and pmd entries. We don't 41 * need to setup hugepage directory for them. Our pte and page directory format 42 * enable us to have this enabled. 43 */ 44 static inline int hugepd_ok(hugepd_t hpd) 45 { 46 if (radix_enabled()) 47 return 0; 48 return hash__hugepd_ok(hpd); 49 } 50 #define is_hugepd(hpd) (hugepd_ok(hpd)) 51 52 /* 53 * 16M and 16G huge page directory tables are allocated from slab cache 54 * 55 */ 56 #define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24) 57 #define H_16G_CACHE_INDEX \ 58 (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34) 59 60 static inline int get_hugepd_cache_index(int index) 61 { 62 switch (index) { 63 case H_16M_CACHE_INDEX: 64 return HTLB_16M_INDEX; 65 case H_16G_CACHE_INDEX: 66 return HTLB_16G_INDEX; 67 default: 68 BUG(); 69 } 70 /* should not reach */ 71 } 72 73 #else /* !CONFIG_HUGETLB_PAGE */ 74 static inline int pmd_huge(pmd_t pmd) { return 0; } 75 static inline int pud_huge(pud_t pud) { return 0; } 76 #endif /* CONFIG_HUGETLB_PAGE */ 77 78 #endif /* __ASSEMBLY__ */ 79 80 #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */ 81