1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_RISCV_HUGETLB_H
 3#define _ASM_RISCV_HUGETLB_H
 4
 5#include <asm/cacheflush.h>
 6#include <asm/page.h>
 7
 8static inline void arch_clear_hugepage_flags(struct page *page)
 9{
10	clear_bit(PG_dcache_clean, &page->flags);
11}
12#define arch_clear_hugepage_flags arch_clear_hugepage_flags
13
14#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
15bool arch_hugetlb_migration_supported(struct hstate *h);
16#define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
17#endif
18
19#ifdef CONFIG_RISCV_ISA_SVNAPOT
20#define __HAVE_ARCH_HUGE_PTE_CLEAR
21void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
22		    pte_t *ptep, unsigned long sz);
23
24#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
25void set_huge_pte_at(struct mm_struct *mm,
26		     unsigned long addr, pte_t *ptep, pte_t pte,
27		     unsigned long sz);
28
29#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
30pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
31			      unsigned long addr, pte_t *ptep);
32
33#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
34pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
35			    unsigned long addr, pte_t *ptep);
36
37#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
38void huge_ptep_set_wrprotect(struct mm_struct *mm,
39			     unsigned long addr, pte_t *ptep);
40
41#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
42int huge_ptep_set_access_flags(struct vm_area_struct *vma,
43			       unsigned long addr, pte_t *ptep,
44			       pte_t pte, int dirty);
45
46#define __HAVE_ARCH_HUGE_PTEP_GET
47pte_t huge_ptep_get(pte_t *ptep);
48
49pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
50#define arch_make_huge_pte arch_make_huge_pte
51
52#endif /*CONFIG_RISCV_ISA_SVNAPOT*/
53
54#include <asm-generic/hugetlb.h>
55
56#endif /* _ASM_RISCV_HUGETLB_H */