| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 */ |