1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_NOHASH_TLBFLUSH_H
3 #define _ASM_POWERPC_NOHASH_TLBFLUSH_H
8 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
9 * - flush_tlb_page(vma, vmaddr) flushes one page
10 * - local_flush_tlb_mm(mm, full) flushes the specified mm context on
12 * - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
13 * - flush_tlb_range(vma, start, end) flushes a range of pages
14 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
19 * TLB flushing for software loaded TLB chips
21 * TODO: (CONFIG_PPC_85xx) determine if flush_tlb_range &
22 * flush_tlb_kernel_range are best implemented as tlbia vs
26 struct vm_area_struct;
29 #define MMU_NO_CONTEXT ((unsigned int)-1)
31 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
35 static inline void local_flush_tlb_mm(struct mm_struct *mm)
37 unsigned int pid = READ_ONCE(mm->context.id);
39 if (pid != MMU_NO_CONTEXT)
40 asm volatile ("sync; tlbia; isync" : : : "memory");
43 static inline void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
45 asm volatile ("tlbie %0; sync" : : "r" (vmaddr) : "memory");
48 static inline void local_flush_tlb_page_psize(struct mm_struct *mm,
49 unsigned long vmaddr, int psize)
51 asm volatile ("tlbie %0; sync" : : "r" (vmaddr) : "memory");
54 static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
58 if (end - start <= PAGE_SIZE)
59 asm volatile ("tlbie %0; sync" : : "r" (start) : "memory");
61 asm volatile ("sync; tlbia; isync" : : : "memory");
64 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
65 extern void local_flush_tlb_mm(struct mm_struct *mm);
66 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
67 void local_flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmaddr, int psize);
69 extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
74 extern void flush_tlb_mm(struct mm_struct *mm);
75 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
76 extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
79 #define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
80 #define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr)
81 #define __flush_tlb_page(mm,addr,p,i) __local_flush_tlb_page(mm,addr,p,i)
84 #endif /* _ASM_POWERPC_NOHASH_TLBFLUSH_H */