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