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review.trustedfirmware.org / hafnium / third_party / linux.git / 157378f43faad830e4aa3815bde5fa9f9a9f5be6 / . / arch / powerpc / include / asm / hugetlb.h
blob: 013165e6261861591d778833979f45807a8af514 [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[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>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]7
8#ifdef CONFIG_PPC_BOOK3S_64
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]9#include <asm/book3s/64/hugetlb.h>
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]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>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]14#endif /* CONFIG_PPC_BOOK3S_64 */
15
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]16extern bool hugetlb_disabled;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]17
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]18void hugetlbpage_init_default(void);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]19
20void flush_dcache_icache_hugepage(struct page *page);
21
22int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
23 unsigned long len);
24
25static 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}
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame^]33#define is_hugepage_only_range is_hugepage_only_range
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]34
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]35#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]36void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
37 unsigned long end, unsigned long floor,
38 unsigned long ceiling);
39
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]40#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]41static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
42 unsigned long addr, pte_t *ptep)
43{
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]44 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]45}
46
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]47#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]48static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
49 unsigned long addr, pte_t *ptep)
50{
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]51 huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]52 flush_hugetlb_page(vma, addr);
53}
54
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]55#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
56int huge_ptep_set_access_flags(struct vm_area_struct *vma,
57 unsigned long addr, pte_t *ptep,
58 pte_t pte, int dirty);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]59
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame^]60void gigantic_hugetlb_cma_reserve(void) __init;
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]61#include <asm-generic/hugetlb.h>
62
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]63#else /* ! CONFIG_HUGETLB_PAGE */
64static inline void flush_hugetlb_page(struct vm_area_struct *vma,
65 unsigned long vmaddr)
66{
67}
68
69#define hugepd_shift(x) 0
70static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
71 unsigned pdshift)
72{
73 return NULL;
74}
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame^]75
76
77static inline void __init gigantic_hugetlb_cma_reserve(void)
78{
79}
80
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]81#endif /* CONFIG_HUGETLB_PAGE */
82
83#endif /* _ASM_POWERPC_HUGETLB_H */