1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef _ASM_NIOS2_TLBFLUSH_H
7*4882a593Smuzhiyun #define _ASM_NIOS2_TLBFLUSH_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun struct mm_struct;
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun /*
12*4882a593Smuzhiyun * TLB flushing:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * - flush_tlb_all() flushes all processes TLB entries
15*4882a593Smuzhiyun * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
16*4882a593Smuzhiyun * - flush_tlb_range(vma, start, end) flushes a range of pages
17*4882a593Smuzhiyun * - flush_tlb_page(vma, address) flushes a page
18*4882a593Smuzhiyun * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
19*4882a593Smuzhiyun * - flush_tlb_kernel_page(address) flushes a kernel page
20*4882a593Smuzhiyun *
21*4882a593Smuzhiyun * - reload_tlb_page(vma, address, pte) flushes the TLB for address like
22*4882a593Smuzhiyun * flush_tlb_page, then replaces it with a TLB for pte.
23*4882a593Smuzhiyun */
24*4882a593Smuzhiyun extern void flush_tlb_all(void);
25*4882a593Smuzhiyun extern void flush_tlb_mm(struct mm_struct *mm);
26*4882a593Smuzhiyun extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
27*4882a593Smuzhiyun unsigned long end);
28*4882a593Smuzhiyun extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
29*4882a593Smuzhiyun
flush_tlb_page(struct vm_area_struct * vma,unsigned long address)30*4882a593Smuzhiyun static inline void flush_tlb_page(struct vm_area_struct *vma,
31*4882a593Smuzhiyun unsigned long address)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun flush_tlb_range(vma, address, address + PAGE_SIZE);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
flush_tlb_kernel_page(unsigned long address)36*4882a593Smuzhiyun static inline void flush_tlb_kernel_page(unsigned long address)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun flush_tlb_kernel_range(address, address + PAGE_SIZE);
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun extern void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr,
42*4882a593Smuzhiyun pte_t pte);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #endif /* _ASM_NIOS2_TLBFLUSH_H */
45