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review.trustedfirmware.org / hafnium / third_party / linux / 0e64123141f3854e695eb4924d82b52856691466 / . / arch / powerpc / include / asm / hugetlb.h
blob: bd6504c28c2f2071e32f45bbc5b29a21388ea590 [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}
33
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]34#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]35void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
36 unsigned long end, unsigned long floor,
37 unsigned long ceiling);
38
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]39#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]40static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
41 unsigned long addr, pte_t *ptep)
42{
43#ifdef CONFIG_PPC64
44 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
45#else
46 return __pte(pte_update(ptep, ~0UL, 0));
47#endif
48}
49
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]50#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]51static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52 unsigned long addr, pte_t *ptep)
53{
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]54 huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]55 flush_hugetlb_page(vma, addr);
56}
57
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]58#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
59int huge_ptep_set_access_flags(struct vm_area_struct *vma,
60 unsigned long addr, pte_t *ptep,
61 pte_t pte, int dirty);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]62
63static inline void arch_clear_hugepage_flags(struct page *page)
64{
65}
66
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame]67#include <asm-generic/hugetlb.h>
68
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]69#else /* ! CONFIG_HUGETLB_PAGE */
70static inline void flush_hugetlb_page(struct vm_area_struct *vma,
71 unsigned long vmaddr)
72{
73}
74
75#define hugepd_shift(x) 0
76static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
77 unsigned pdshift)
78{
79 return NULL;
80}
81#endif /* CONFIG_HUGETLB_PAGE */
82
83#endif /* _ASM_POWERPC_HUGETLB_H */