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 void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, 35 pte_t pte); 36 37 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE 38 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, 39 unsigned long end, unsigned long floor, 40 unsigned long ceiling); 41 42 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 43 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 44 unsigned long addr, pte_t *ptep) 45 { 46 #ifdef CONFIG_PPC64 47 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1)); 48 #else 49 return __pte(pte_update(ptep, ~0UL, 0)); 50 #endif 51 } 52 53 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 54 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 55 unsigned long addr, pte_t *ptep) 56 { 57 huge_ptep_get_and_clear(vma->vm_mm, addr, ptep); 58 flush_hugetlb_page(vma, addr); 59 } 60 61 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 62 int huge_ptep_set_access_flags(struct vm_area_struct *vma, 63 unsigned long addr, pte_t *ptep, 64 pte_t pte, int dirty); 65 66 static inline void arch_clear_hugepage_flags(struct page *page) 67 { 68 } 69 70 #include <asm-generic/hugetlb.h> 71 72 #else /* ! CONFIG_HUGETLB_PAGE */ 73 static inline void flush_hugetlb_page(struct vm_area_struct *vma, 74 unsigned long vmaddr) 75 { 76 } 77 78 #define hugepd_shift(x) 0 79 static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, 80 unsigned pdshift) 81 { 82 return NULL; 83 } 84 #endif /* CONFIG_HUGETLB_PAGE */ 85 86 #endif /* _ASM_POWERPC_HUGETLB_H */ 87