1
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
15
16extern bool hugetlb_disabled;
17
18void hugetlbpage_init_default(void);
19
20int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
21 unsigned long len);
22
23static 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_MM_SLICES) && !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
34void 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
39static 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
46static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
47 unsigned long addr, pte_t *ptep)
48{
49 huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
50 flush_hugetlb_page(vma, addr);
51}
52
53#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
54int huge_ptep_set_access_flags(struct vm_area_struct *vma,
55 unsigned long addr, pte_t *ptep,
56 pte_t pte, int dirty);
57
58void gigantic_hugetlb_cma_reserve(void) __init;
59#include <asm-generic/hugetlb.h>
60
61#else
62static inline void flush_hugetlb_page(struct vm_area_struct *vma,
63 unsigned long vmaddr)
64{
65}
66
67#define hugepd_shift(x) 0
68static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
69 unsigned pdshift)
70{
71 return NULL;
72}
73
74
75static inline void __init gigantic_hugetlb_cma_reserve(void)
76{
77}
78
79#endif
80
81#endif
82