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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H
3#define _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H
4
5#include <linux/build_bug.h>
6
7#define MMU_NO_CONTEXT (0)
8/*
9 * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx
10 */
11void hash__flush_tlb_mm(struct mm_struct *mm);
12void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
13void hash__flush_range(struct mm_struct *mm, unsigned long start, unsigned long end);
14void hash__flush_gather(struct mmu_gather *tlb);
15
16#ifdef CONFIG_SMP
17void _tlbie(unsigned long address);
18#else
19static inline void _tlbie(unsigned long address)
20{
21 asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
22}
23#endif
24void _tlbia(void);
25
26/*
27 * Called at the end of a mmu_gather operation to make sure the
28 * TLB flush is completely done.
29 */
30static inline void tlb_flush(struct mmu_gather *tlb)
31{
32 /* 603 needs to flush the whole TLB here since it doesn't use a hash table. */
33 if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
34 hash__flush_gather(tlb);
35 else
36 _tlbia();
37}
38
39static inline void flush_range(struct mm_struct *mm, unsigned long start, unsigned long end)
40{
41 start &= PAGE_MASK;
42 if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
43 hash__flush_range(mm, start, end);
44 else if (end - start <= PAGE_SIZE)
45 _tlbie(start);
46 else
47 _tlbia();
48}
49
50static inline void flush_tlb_mm(struct mm_struct *mm)
51{
52 if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
53 hash__flush_tlb_mm(mm);
54 else
55 _tlbia();
56}
57
58static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
59{
60 if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
61 hash__flush_tlb_page(vma, vmaddr);
62 else
63 _tlbie(vmaddr);
64}
65
66static inline void
67flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
68{
69 flush_range(vma->vm_mm, start, end);
70}
71
72static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
73{
74 flush_range(&init_mm, start, end);
75}
76
77static inline void local_flush_tlb_page(struct vm_area_struct *vma,
78 unsigned long vmaddr)
79{
80 flush_tlb_page(vma, vmaddr);
81}
82
83static inline void local_flush_tlb_page_psize(struct mm_struct *mm,
84 unsigned long vmaddr, int psize)
85{
86 flush_range(mm, vmaddr, vmaddr);
87}
88
89static inline void local_flush_tlb_mm(struct mm_struct *mm)
90{
91 flush_tlb_mm(mm);
92}
93
94#endif /* _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H */