1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_NOHASH_TLBFLUSH_H
3 #define _ASM_POWERPC_NOHASH_TLBFLUSH_H
4 
5 /*
6  * TLB flushing:
7  *
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
11  *                           the local processor
12  *  - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
13  *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
14  *  - flush_tlb_range(vma, start, end) flushes a range of pages
15  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
16  *
17  */
18 
19 /*
20  * TLB flushing for software loaded TLB chips
21  *
22  * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
23  * flush_tlb_kernel_range are best implemented as tlbia vs
24  * specific tlbie's
25  */
26 
27 struct vm_area_struct;
28 struct mm_struct;
29 
30 #define MMU_NO_CONTEXT      	((unsigned int)-1)
31 
32 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
33 			    unsigned long end);
34 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
35 
36 extern void local_flush_tlb_mm(struct mm_struct *mm);
37 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
38 
39 extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
40 				   int tsize, int ind);
41 
42 #ifdef CONFIG_SMP
43 extern void flush_tlb_mm(struct mm_struct *mm);
44 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
45 extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
46 			     int tsize, int ind);
47 #else
48 #define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
49 #define flush_tlb_page(vma,addr)	local_flush_tlb_page(vma,addr)
50 #define __flush_tlb_page(mm,addr,p,i)	__local_flush_tlb_page(mm,addr,p,i)
51 #endif
52 
53 #endif /* _ASM_POWERPC_NOHASH_TLBFLUSH_H */
54