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_FSL_BOOK3E) 11 #include <asm/nohash/hugetlb-book3e.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 hugetlbpage_init_default(void); 19 20 void flush_dcache_icache_hugepage(struct page *page); 21 22 int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, 23 unsigned long len); 24 25 static inline int is_hugepage_only_range(struct mm_struct *mm, 26 unsigned long addr, 27 unsigned long len) 28 { 29 if (IS_ENABLED(CONFIG_PPC_MM_SLICES) && !radix_enabled()) 30 return slice_is_hugepage_only_range(mm, addr, len); 31 return 0; 32 } 33 34 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE 35 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, 36 unsigned long end, unsigned long floor, 37 unsigned long ceiling); 38 39 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 40 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 41 unsigned long addr, pte_t *ptep) 42 { 43 #ifdef CONFIG_PPC64 44 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1)); 45 #else 46 return __pte(pte_update(ptep, ~0UL, 0)); 47 #endif 48 } 49 50 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 51 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 52 unsigned long addr, pte_t *ptep) 53 { 54 huge_ptep_get_and_clear(vma->vm_mm, addr, ptep); 55 flush_hugetlb_page(vma, addr); 56 } 57 58 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 59 int huge_ptep_set_access_flags(struct vm_area_struct *vma, 60 unsigned long addr, pte_t *ptep, 61 pte_t pte, int dirty); 62 63 static inline void arch_clear_hugepage_flags(struct page *page) 64 { 65 } 66 67 #include <asm-generic/hugetlb.h> 68 69 #else /* ! CONFIG_HUGETLB_PAGE */ 70 static inline void flush_hugetlb_page(struct vm_area_struct *vma, 71 unsigned long vmaddr) 72 { 73 } 74 75 #define hugepd_shift(x) 0 76 static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, 77 unsigned pdshift) 78 { 79 return NULL; 80 } 81 #endif /* CONFIG_HUGETLB_PAGE */ 82 83 #endif /* _ASM_POWERPC_HUGETLB_H */ 84