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_HUGE_SET_HUGE_PTE_AT
34 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
35 pte_t pte, unsigned long sz);
36
37 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
38 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
39 unsigned long addr, pte_t *ptep)
40 {
41 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
42 }
43
44 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
45 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
46 unsigned long addr, pte_t *ptep)
47 {
48 pte_t pte;
49
50 pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
51 flush_hugetlb_page(vma, addr);
52 return pte;
53 }
54
55 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
56 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
57 unsigned long addr, pte_t *ptep,
58 pte_t pte, int dirty);
59
60 void gigantic_hugetlb_cma_reserve(void) __init;
61 #include <asm-generic/hugetlb.h>
62
63 #else /* ! CONFIG_HUGETLB_PAGE */
64 static inline void flush_hugetlb_page(struct vm_area_struct *vma,
65 unsigned long vmaddr)
66 {
67 }
68
69 static inline void __init gigantic_hugetlb_cma_reserve(void)
70 {
71 }
72
73 static inline void __init hugetlbpage_init_defaultsize(void)
74 {
75 }
76 #endif /* CONFIG_HUGETLB_PAGE */
77
78 #endif /* _ASM_POWERPC_HUGETLB_H */
79
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