1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_POWERPC_HUGETLB_H
3*4882a593Smuzhiyun #define _ASM_POWERPC_HUGETLB_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #ifdef CONFIG_HUGETLB_PAGE
6*4882a593Smuzhiyun #include <asm/page.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #ifdef CONFIG_PPC_BOOK3S_64
9*4882a593Smuzhiyun #include <asm/book3s/64/hugetlb.h>
10*4882a593Smuzhiyun #elif defined(CONFIG_PPC_FSL_BOOK3E)
11*4882a593Smuzhiyun #include <asm/nohash/hugetlb-book3e.h>
12*4882a593Smuzhiyun #elif defined(CONFIG_PPC_8xx)
13*4882a593Smuzhiyun #include <asm/nohash/32/hugetlb-8xx.h>
14*4882a593Smuzhiyun #endif /* CONFIG_PPC_BOOK3S_64 */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun extern bool hugetlb_disabled;
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun void hugetlbpage_init_default(void);
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun void flush_dcache_icache_hugepage(struct page *page);
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
23*4882a593Smuzhiyun unsigned long len);
24*4882a593Smuzhiyun
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)25*4882a593Smuzhiyun static inline int is_hugepage_only_range(struct mm_struct *mm,
26*4882a593Smuzhiyun unsigned long addr,
27*4882a593Smuzhiyun unsigned long len)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun if (IS_ENABLED(CONFIG_PPC_MM_SLICES) && !radix_enabled())
30*4882a593Smuzhiyun return slice_is_hugepage_only_range(mm, addr, len);
31*4882a593Smuzhiyun return 0;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun #define is_hugepage_only_range is_hugepage_only_range
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
36*4882a593Smuzhiyun void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
37*4882a593Smuzhiyun unsigned long end, unsigned long floor,
38*4882a593Smuzhiyun unsigned long ceiling);
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
huge_ptep_get_and_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep)41*4882a593Smuzhiyun static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
42*4882a593Smuzhiyun unsigned long addr, pte_t *ptep)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)48*4882a593Smuzhiyun static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
49*4882a593Smuzhiyun unsigned long addr, pte_t *ptep)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
52*4882a593Smuzhiyun flush_hugetlb_page(vma, addr);
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
56*4882a593Smuzhiyun int huge_ptep_set_access_flags(struct vm_area_struct *vma,
57*4882a593Smuzhiyun unsigned long addr, pte_t *ptep,
58*4882a593Smuzhiyun pte_t pte, int dirty);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun void gigantic_hugetlb_cma_reserve(void) __init;
61*4882a593Smuzhiyun #include <asm-generic/hugetlb.h>
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #else /* ! CONFIG_HUGETLB_PAGE */
flush_hugetlb_page(struct vm_area_struct * vma,unsigned long vmaddr)64*4882a593Smuzhiyun static inline void flush_hugetlb_page(struct vm_area_struct *vma,
65*4882a593Smuzhiyun unsigned long vmaddr)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun #define hugepd_shift(x) 0
hugepte_offset(hugepd_t hpd,unsigned long addr,unsigned pdshift)70*4882a593Smuzhiyun static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
71*4882a593Smuzhiyun unsigned pdshift)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun return NULL;
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun
gigantic_hugetlb_cma_reserve(void)77*4882a593Smuzhiyun static inline void __init gigantic_hugetlb_cma_reserve(void)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun #endif /* CONFIG_HUGETLB_PAGE */
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun #endif /* _ASM_POWERPC_HUGETLB_H */
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