1 #ifndef _ASM_POWERPC_TLBFLUSH_H
2 #define _ASM_POWERPC_TLBFLUSH_H
3 
4 /*
5  * TLB flushing:
6  *
7  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
8  *  - flush_tlb_page(vma, vmaddr) flushes one page
9  *  - local_flush_tlb_mm(mm, full) flushes the specified mm context on
10  *                           the local processor
11  *  - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
12  *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
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
15  *
16  *  This program is free software; you can redistribute it and/or
17  *  modify it under the terms of the GNU General Public License
18  *  as published by the Free Software Foundation; either version
19  *  2 of the License, or (at your option) any later version.
20  */
21 #ifdef __KERNEL__
22 
23 #ifdef CONFIG_PPC_MMU_NOHASH
24 /*
25  * TLB flushing for software loaded TLB chips
26  *
27  * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
28  * flush_tlb_kernel_range are best implemented as tlbia vs
29  * specific tlbie's
30  */
31 
32 struct vm_area_struct;
33 struct mm_struct;
34 
35 #define MMU_NO_CONTEXT      	((unsigned int)-1)
36 
37 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
38 			    unsigned long end);
39 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
40 
41 extern void local_flush_tlb_mm(struct mm_struct *mm);
42 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
43 
44 extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
45 				   int tsize, int ind);
46 
47 #ifdef CONFIG_SMP
48 extern void flush_tlb_mm(struct mm_struct *mm);
49 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
50 extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
51 			     int tsize, int ind);
52 #else
53 #define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
54 #define flush_tlb_page(vma,addr)	local_flush_tlb_page(vma,addr)
55 #define __flush_tlb_page(mm,addr,p,i)	__local_flush_tlb_page(mm,addr,p,i)
56 #endif
57 
58 #elif defined(CONFIG_PPC_STD_MMU_32)
59 
60 #define MMU_NO_CONTEXT      (0)
61 /*
62  * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx
63  */
64 extern void flush_tlb_mm(struct mm_struct *mm);
65 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
66 extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
67 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
68 			    unsigned long end);
69 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
70 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
71 					unsigned long vmaddr)
72 {
73 	flush_tlb_page(vma, vmaddr);
74 }
75 static inline void local_flush_tlb_mm(struct mm_struct *mm)
76 {
77 	flush_tlb_mm(mm);
78 }
79 
80 #elif defined(CONFIG_PPC_BOOK3S_64)
81 #include <asm/book3s/64/tlbflush.h>
82 #else
83 #error Unsupported MMU type
84 #endif
85 
86 #endif /*__KERNEL__ */
87 #endif /* _ASM_POWERPC_TLBFLUSH_H */
88