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25#include <linux/kernel.h>
26#include <linux/mm.h>
27#include <linux/init.h>
28#include <linux/highmem.h>
29#include <linux/pagemap.h>
30
31#include <asm/tlbflush.h>
32#include <asm/tlb.h>
33
34#include "mmu_decl.h"
35
36
37
38
39void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long addr)
40{
41 unsigned long ptephys;
42
43 if (Hash != 0) {
44 ptephys = __pa(ptep) & PAGE_MASK;
45 flush_hash_pages(mm->context.id, addr, ptephys, 1);
46 }
47}
48
49
50
51
52
53void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr)
54{
55 if (Hash != 0)
56 return;
57 _tlbie(addr);
58}
59
60
61
62
63
64void tlb_flush(struct mmu_gather *tlb)
65{
66 if (Hash == 0) {
67
68
69
70
71 _tlbia();
72 }
73}
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92
93#ifdef CONFIG_SMP_750
94#define FINISH_FLUSH smp_send_tlb_invalidate(0)
95#else
96#define FINISH_FLUSH do { } while (0)
97#endif
98
99static void flush_range(struct mm_struct *mm, unsigned long start,
100 unsigned long end)
101{
102 pmd_t *pmd;
103 unsigned long pmd_end;
104 int count;
105 unsigned int ctx = mm->context.id;
106
107 if (Hash == 0) {
108 _tlbia();
109 return;
110 }
111 start &= PAGE_MASK;
112 if (start >= end)
113 return;
114 end = (end - 1) | ~PAGE_MASK;
115 pmd = pmd_offset(pud_offset(pgd_offset(mm, start), start), start);
116 for (;;) {
117 pmd_end = ((start + PGDIR_SIZE) & PGDIR_MASK) - 1;
118 if (pmd_end > end)
119 pmd_end = end;
120 if (!pmd_none(*pmd)) {
121 count = ((pmd_end - start) >> PAGE_SHIFT) + 1;
122 flush_hash_pages(ctx, start, pmd_val(*pmd), count);
123 }
124 if (pmd_end == end)
125 break;
126 start = pmd_end + 1;
127 ++pmd;
128 }
129}
130
131
132
133
134void flush_tlb_kernel_range(unsigned long start, unsigned long end)
135{
136 flush_range(&init_mm, start, end);
137 FINISH_FLUSH;
138}
139
140
141
142
143void flush_tlb_mm(struct mm_struct *mm)
144{
145 struct vm_area_struct *mp;
146
147 if (Hash == 0) {
148 _tlbia();
149 return;
150 }
151
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155
156
157
158 for (mp = mm->mmap; mp != NULL; mp = mp->vm_next)
159 flush_range(mp->vm_mm, mp->vm_start, mp->vm_end);
160 FINISH_FLUSH;
161}
162
163void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
164{
165 struct mm_struct *mm;
166 pmd_t *pmd;
167
168 if (Hash == 0) {
169 _tlbie(vmaddr);
170 return;
171 }
172 mm = (vmaddr < TASK_SIZE)? vma->vm_mm: &init_mm;
173 pmd = pmd_offset(pud_offset(pgd_offset(mm, vmaddr), vmaddr), vmaddr);
174 if (!pmd_none(*pmd))
175 flush_hash_pages(mm->context.id, vmaddr, pmd_val(*pmd), 1);
176 FINISH_FLUSH;
177}
178
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183
184void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
185 unsigned long end)
186{
187 flush_range(vma->vm_mm, start, end);
188 FINISH_FLUSH;
189}
190