1 #ifndef _ASM_SCORE_TLBFLUSH_H
2 #define _ASM_SCORE_TLBFLUSH_H
3
4 #include <linux/mm.h>
5
6 /*
7 * TLB flushing:
8 *
9 * - flush_tlb_all() flushes all processes TLB entries
10 * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
11 * - flush_tlb_page(vma, vmaddr) flushes one page
12 * - flush_tlb_range(vma, start, end) flushes a range of pages
13 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
14 */
15 extern void local_flush_tlb_all(void);
16 extern void local_flush_tlb_mm(struct mm_struct *mm);
17 extern void local_flush_tlb_range(struct vm_area_struct *vma,
18 unsigned long start, unsigned long end);
19 extern void local_flush_tlb_kernel_range(unsigned long start,
20 unsigned long end);
21 extern void local_flush_tlb_page(struct vm_area_struct *vma,
22 unsigned long page);
23 extern void local_flush_tlb_one(unsigned long vaddr);
24
25 #define flush_tlb_all() local_flush_tlb_all()
26 #define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
27 #define flush_tlb_range(vma, vmaddr, end) \
28 local_flush_tlb_range(vma, vmaddr, end)
29 #define flush_tlb_kernel_range(vmaddr, end) \
30 local_flush_tlb_kernel_range(vmaddr, end)
31 #define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
32 #define flush_tlb_one(vaddr) local_flush_tlb_one(vaddr)
33
34 #ifndef __ASSEMBLY__
35
pevn_get(void)36 static inline unsigned long pevn_get(void)
37 {
38 unsigned long val;
39
40 __asm__ __volatile__(
41 "mfcr %0, cr11\n"
42 "nop\nnop\n"
43 : "=r" (val));
44
45 return val;
46 }
47
pevn_set(unsigned long val)48 static inline void pevn_set(unsigned long val)
49 {
50 __asm__ __volatile__(
51 "mtcr %0, cr11\n"
52 "nop\nnop\nnop\nnop\nnop\n"
53 : : "r" (val));
54 }
55
pectx_set(unsigned long val)56 static inline void pectx_set(unsigned long val)
57 {
58 __asm__ __volatile__(
59 "mtcr %0, cr12\n"
60 "nop\nnop\nnop\nnop\nnop\n"
61 : : "r" (val));
62 }
63
pectx_get(void)64 static inline unsigned long pectx_get(void)
65 {
66 unsigned long val;
67 __asm__ __volatile__(
68 "mfcr %0, cr12\n"
69 "nop\nnop\n"
70 : "=r" (val));
71 return val;
72 }
tlblock_get(void)73 static inline unsigned long tlblock_get(void)
74 {
75 unsigned long val;
76
77 __asm__ __volatile__(
78 "mfcr %0, cr7\n"
79 "nop\nnop\n"
80 : "=r" (val));
81 return val;
82 }
tlblock_set(unsigned long val)83 static inline void tlblock_set(unsigned long val)
84 {
85 __asm__ __volatile__(
86 "mtcr %0, cr7\n"
87 "nop\nnop\nnop\nnop\nnop\n"
88 : : "r" (val));
89 }
90
tlbpt_set(unsigned long val)91 static inline void tlbpt_set(unsigned long val)
92 {
93 __asm__ __volatile__(
94 "mtcr %0, cr8\n"
95 "nop\nnop\nnop\nnop\nnop\n"
96 : : "r" (val));
97 }
98
tlbpt_get(void)99 static inline long tlbpt_get(void)
100 {
101 long val;
102
103 __asm__ __volatile__(
104 "mfcr %0, cr8\n"
105 "nop\nnop\n"
106 : "=r" (val));
107
108 return val;
109 }
110
peaddr_set(unsigned long val)111 static inline void peaddr_set(unsigned long val)
112 {
113 __asm__ __volatile__(
114 "mtcr %0, cr9\n"
115 "nop\nnop\nnop\nnop\nnop\n"
116 : : "r" (val));
117 }
118
119 /* TLB operations. */
tlb_probe(void)120 static inline void tlb_probe(void)
121 {
122 __asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
123 }
124
tlb_read(void)125 static inline void tlb_read(void)
126 {
127 __asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
128 }
129
tlb_write_indexed(void)130 static inline void tlb_write_indexed(void)
131 {
132 __asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
133 }
134
tlb_write_random(void)135 static inline void tlb_write_random(void)
136 {
137 __asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
138 }
139
140 #endif /* Not __ASSEMBLY__ */
141
142 #endif /* _ASM_SCORE_TLBFLUSH_H */
143