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
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)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
huge_ptep_get_and_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep)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
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)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 */
flush_hugetlb_page(struct vm_area_struct * vma,unsigned long vmaddr)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
hugepte_offset(hugepd_t hpd,unsigned long addr,unsigned pdshift)71 static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
72 unsigned pdshift)
73 {
74 return NULL;
75 }
76
77
gigantic_hugetlb_cma_reserve(void)78 static inline void __init gigantic_hugetlb_cma_reserve(void)
79 {
80 }
81
hugetlbpage_init_defaultsize(void)82 static inline void __init hugetlbpage_init_defaultsize(void)
83 {
84 }
85 #endif /* CONFIG_HUGETLB_PAGE */
86
87 #endif /* _ASM_POWERPC_HUGETLB_H */
88