1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_HUGETLB_H 3 #define _ASM_POWERPC_HUGETLB_H 4 5 #ifdef CONFIG_HUGETLB_PAGE 6 #include <asm/page.h> 7 8 #ifdef CONFIG_PPC_BOOK3S_64 9 #include <asm/book3s/64/hugetlb.h> 10 #elif defined(CONFIG_PPC_E500) 11 #include <asm/nohash/hugetlb-e500.h> 12 #elif defined(CONFIG_PPC_8xx) 13 #include <asm/nohash/32/hugetlb-8xx.h> 14 #endif /* CONFIG_PPC_BOOK3S_64 */ 15 16 extern bool hugetlb_disabled; 17 18 void __init hugetlbpage_init_defaultsize(void); 19 20 int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, 21 unsigned long len); 22 23 static inline int is_hugepage_only_range(struct mm_struct *mm, 24 unsigned long addr, 25 unsigned long len) 26 { 27 if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled()) 28 return slice_is_hugepage_only_range(mm, addr, len); 29 return 0; 30 } 31 #define is_hugepage_only_range is_hugepage_only_range 32 33 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE 34 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, 35 unsigned long end, unsigned long floor, 36 unsigned long ceiling); 37 38 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 39 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 40 unsigned long addr, pte_t *ptep) 41 { 42 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1)); 43 } 44 45 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 46 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, 47 unsigned long addr, pte_t *ptep) 48 { 49 pte_t pte; 50 51 pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep); 52 flush_hugetlb_page(vma, addr); 53 return pte; 54 } 55 56 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 57 int huge_ptep_set_access_flags(struct vm_area_struct *vma, 58 unsigned long addr, pte_t *ptep, 59 pte_t pte, int dirty); 60 61 void gigantic_hugetlb_cma_reserve(void) __init; 62 #include <asm-generic/hugetlb.h> 63 64 #else /* ! CONFIG_HUGETLB_PAGE */ 65 static inline void flush_hugetlb_page(struct vm_area_struct *vma, 66 unsigned long vmaddr) 67 { 68 } 69 70 #define hugepd_shift(x) 0 71 static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, 72 unsigned pdshift) 73 { 74 return NULL; 75 } 76 77 78 static inline void __init gigantic_hugetlb_cma_reserve(void) 79 { 80 } 81 82 static inline void __init hugetlbpage_init_defaultsize(void) 83 { 84 } 85 #endif /* CONFIG_HUGETLB_PAGE */ 86 87 #endif /* _ASM_POWERPC_HUGETLB_H */ 88