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kernel
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linux
m68k: merge the mmu and non-mmu versions of tlbflush.h
Simple merge of the mmu and non-mmu versions of tlbflush.h
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
+265
-277
+265
-3
arch/m68k/include/asm/tlbflush.h
+265
-3
arch/m68k/include/asm/tlbflush.h
···
1
-
#ifdef __uClinux__
2
-
#include "tlbflush_no.h"
1
+
#ifndef _M68K_TLBFLUSH_H
2
+
#define _M68K_TLBFLUSH_H
3
+
4
+
#ifdef CONFIG_MMU
5
+
#ifndef CONFIG_SUN3
6
+
7
+
#include <asm/current.h>
8
+
9
+
static inline void flush_tlb_kernel_page(void *addr)
10
+
{
11
+
if (CPU_IS_040_OR_060) {
12
+
mm_segment_t old_fs = get_fs();
13
+
set_fs(KERNEL_DS);
14
+
__asm__ __volatile__(".chip 68040\n\t"
15
+
"pflush (%0)\n\t"
16
+
".chip 68k"
17
+
: : "a" (addr));
18
+
set_fs(old_fs);
19
+
} else if (CPU_IS_020_OR_030)
20
+
__asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr));
21
+
}
22
+
23
+
/*
24
+
* flush all user-space atc entries.
25
+
*/
26
+
static inline void __flush_tlb(void)
27
+
{
28
+
if (CPU_IS_040_OR_060)
29
+
__asm__ __volatile__(".chip 68040\n\t"
30
+
"pflushan\n\t"
31
+
".chip 68k");
32
+
else if (CPU_IS_020_OR_030)
33
+
__asm__ __volatile__("pflush #0,#4");
34
+
}
35
+
36
+
static inline void __flush_tlb040_one(unsigned long addr)
37
+
{
38
+
__asm__ __volatile__(".chip 68040\n\t"
39
+
"pflush (%0)\n\t"
40
+
".chip 68k"
41
+
: : "a" (addr));
42
+
}
43
+
44
+
static inline void __flush_tlb_one(unsigned long addr)
45
+
{
46
+
if (CPU_IS_040_OR_060)
47
+
__flush_tlb040_one(addr);
48
+
else if (CPU_IS_020_OR_030)
49
+
__asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
50
+
}
51
+
52
+
#define flush_tlb() __flush_tlb()
53
+
54
+
/*
55
+
* flush all atc entries (both kernel and user-space entries).
56
+
*/
57
+
static inline void flush_tlb_all(void)
58
+
{
59
+
if (CPU_IS_040_OR_060)
60
+
__asm__ __volatile__(".chip 68040\n\t"
61
+
"pflusha\n\t"
62
+
".chip 68k");
63
+
else if (CPU_IS_020_OR_030)
64
+
__asm__ __volatile__("pflusha");
65
+
}
66
+
67
+
static inline void flush_tlb_mm(struct mm_struct *mm)
68
+
{
69
+
if (mm == current->active_mm)
70
+
__flush_tlb();
71
+
}
72
+
73
+
static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
74
+
{
75
+
if (vma->vm_mm == current->active_mm) {
76
+
mm_segment_t old_fs = get_fs();
77
+
set_fs(USER_DS);
78
+
__flush_tlb_one(addr);
79
+
set_fs(old_fs);
80
+
}
81
+
}
82
+
83
+
static inline void flush_tlb_range(struct vm_area_struct *vma,
84
+
unsigned long start, unsigned long end)
85
+
{
86
+
if (vma->vm_mm == current->active_mm)
87
+
__flush_tlb();
88
+
}
89
+
90
+
static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
91
+
{
92
+
flush_tlb_all();
93
+
}
94
+
3
95
#else
4
-
#include "tlbflush_mm.h"
96
+
97
+
98
+
/* Reserved PMEGs. */
99
+
extern char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
100
+
extern unsigned long pmeg_vaddr[SUN3_PMEGS_NUM];
101
+
extern unsigned char pmeg_alloc[SUN3_PMEGS_NUM];
102
+
extern unsigned char pmeg_ctx[SUN3_PMEGS_NUM];
103
+
104
+
/* Flush all userspace mappings one by one... (why no flush command,
105
+
sun?) */
106
+
static inline void flush_tlb_all(void)
107
+
{
108
+
unsigned long addr;
109
+
unsigned char ctx, oldctx;
110
+
111
+
oldctx = sun3_get_context();
112
+
for(addr = 0x00000000; addr < TASK_SIZE; addr += SUN3_PMEG_SIZE) {
113
+
for(ctx = 0; ctx < 8; ctx++) {
114
+
sun3_put_context(ctx);
115
+
sun3_put_segmap(addr, SUN3_INVALID_PMEG);
116
+
}
117
+
}
118
+
119
+
sun3_put_context(oldctx);
120
+
/* erase all of the userspace pmeg maps, we've clobbered them
121
+
all anyway */
122
+
for(addr = 0; addr < SUN3_INVALID_PMEG; addr++) {
123
+
if(pmeg_alloc[addr] == 1) {
124
+
pmeg_alloc[addr] = 0;
125
+
pmeg_ctx[addr] = 0;
126
+
pmeg_vaddr[addr] = 0;
127
+
}
128
+
}
129
+
130
+
}
131
+
132
+
/* Clear user TLB entries within the context named in mm */
133
+
static inline void flush_tlb_mm (struct mm_struct *mm)
134
+
{
135
+
unsigned char oldctx;
136
+
unsigned char seg;
137
+
unsigned long i;
138
+
139
+
oldctx = sun3_get_context();
140
+
sun3_put_context(mm->context);
141
+
142
+
for(i = 0; i < TASK_SIZE; i += SUN3_PMEG_SIZE) {
143
+
seg = sun3_get_segmap(i);
144
+
if(seg == SUN3_INVALID_PMEG)
145
+
continue;
146
+
147
+
sun3_put_segmap(i, SUN3_INVALID_PMEG);
148
+
pmeg_alloc[seg] = 0;
149
+
pmeg_ctx[seg] = 0;
150
+
pmeg_vaddr[seg] = 0;
151
+
}
152
+
153
+
sun3_put_context(oldctx);
154
+
155
+
}
156
+
157
+
/* Flush a single TLB page. In this case, we're limited to flushing a
158
+
single PMEG */
159
+
static inline void flush_tlb_page (struct vm_area_struct *vma,
160
+
unsigned long addr)
161
+
{
162
+
unsigned char oldctx;
163
+
unsigned char i;
164
+
165
+
oldctx = sun3_get_context();
166
+
sun3_put_context(vma->vm_mm->context);
167
+
addr &= ~SUN3_PMEG_MASK;
168
+
if((i = sun3_get_segmap(addr)) != SUN3_INVALID_PMEG)
169
+
{
170
+
pmeg_alloc[i] = 0;
171
+
pmeg_ctx[i] = 0;
172
+
pmeg_vaddr[i] = 0;
173
+
sun3_put_segmap (addr, SUN3_INVALID_PMEG);
174
+
}
175
+
sun3_put_context(oldctx);
176
+
177
+
}
178
+
/* Flush a range of pages from TLB. */
179
+
180
+
static inline void flush_tlb_range (struct vm_area_struct *vma,
181
+
unsigned long start, unsigned long end)
182
+
{
183
+
struct mm_struct *mm = vma->vm_mm;
184
+
unsigned char seg, oldctx;
185
+
186
+
start &= ~SUN3_PMEG_MASK;
187
+
188
+
oldctx = sun3_get_context();
189
+
sun3_put_context(mm->context);
190
+
191
+
while(start < end)
192
+
{
193
+
if((seg = sun3_get_segmap(start)) == SUN3_INVALID_PMEG)
194
+
goto next;
195
+
if(pmeg_ctx[seg] == mm->context) {
196
+
pmeg_alloc[seg] = 0;
197
+
pmeg_ctx[seg] = 0;
198
+
pmeg_vaddr[seg] = 0;
199
+
}
200
+
sun3_put_segmap(start, SUN3_INVALID_PMEG);
201
+
next:
202
+
start += SUN3_PMEG_SIZE;
203
+
}
204
+
}
205
+
206
+
static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
207
+
{
208
+
flush_tlb_all();
209
+
}
210
+
211
+
/* Flush kernel page from TLB. */
212
+
static inline void flush_tlb_kernel_page (unsigned long addr)
213
+
{
214
+
sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG);
215
+
}
216
+
5
217
#endif
218
+
219
+
#else /* !CONFIG_MMU */
220
+
221
+
/*
222
+
* flush all user-space atc entries.
223
+
*/
224
+
static inline void __flush_tlb(void)
225
+
{
226
+
BUG();
227
+
}
228
+
229
+
static inline void __flush_tlb_one(unsigned long addr)
230
+
{
231
+
BUG();
232
+
}
233
+
234
+
#define flush_tlb() __flush_tlb()
235
+
236
+
/*
237
+
* flush all atc entries (both kernel and user-space entries).
238
+
*/
239
+
static inline void flush_tlb_all(void)
240
+
{
241
+
BUG();
242
+
}
243
+
244
+
static inline void flush_tlb_mm(struct mm_struct *mm)
245
+
{
246
+
BUG();
247
+
}
248
+
249
+
static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
250
+
{
251
+
BUG();
252
+
}
253
+
254
+
static inline void flush_tlb_range(struct mm_struct *mm,
255
+
unsigned long start, unsigned long end)
256
+
{
257
+
BUG();
258
+
}
259
+
260
+
static inline void flush_tlb_kernel_page(unsigned long addr)
261
+
{
262
+
BUG();
263
+
}
264
+
265
+
#endif /* CONFIG_MMU */
266
+
267
+
#endif /* _M68K_TLBFLUSH_H */
-219
arch/m68k/include/asm/tlbflush_mm.h
-219
arch/m68k/include/asm/tlbflush_mm.h
···
1
-
#ifndef _M68K_TLBFLUSH_H
2
-
#define _M68K_TLBFLUSH_H
3
-
4
-
5
-
#ifndef CONFIG_SUN3
6
-
7
-
#include <asm/current.h>
8
-
9
-
static inline void flush_tlb_kernel_page(void *addr)
10
-
{
11
-
if (CPU_IS_040_OR_060) {
12
-
mm_segment_t old_fs = get_fs();
13
-
set_fs(KERNEL_DS);
14
-
__asm__ __volatile__(".chip 68040\n\t"
15
-
"pflush (%0)\n\t"
16
-
".chip 68k"
17
-
: : "a" (addr));
18
-
set_fs(old_fs);
19
-
} else if (CPU_IS_020_OR_030)
20
-
__asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr));
21
-
}
22
-
23
-
/*
24
-
* flush all user-space atc entries.
25
-
*/
26
-
static inline void __flush_tlb(void)
27
-
{
28
-
if (CPU_IS_040_OR_060)
29
-
__asm__ __volatile__(".chip 68040\n\t"
30
-
"pflushan\n\t"
31
-
".chip 68k");
32
-
else if (CPU_IS_020_OR_030)
33
-
__asm__ __volatile__("pflush #0,#4");
34
-
}
35
-
36
-
static inline void __flush_tlb040_one(unsigned long addr)
37
-
{
38
-
__asm__ __volatile__(".chip 68040\n\t"
39
-
"pflush (%0)\n\t"
40
-
".chip 68k"
41
-
: : "a" (addr));
42
-
}
43
-
44
-
static inline void __flush_tlb_one(unsigned long addr)
45
-
{
46
-
if (CPU_IS_040_OR_060)
47
-
__flush_tlb040_one(addr);
48
-
else if (CPU_IS_020_OR_030)
49
-
__asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
50
-
}
51
-
52
-
#define flush_tlb() __flush_tlb()
53
-
54
-
/*
55
-
* flush all atc entries (both kernel and user-space entries).
56
-
*/
57
-
static inline void flush_tlb_all(void)
58
-
{
59
-
if (CPU_IS_040_OR_060)
60
-
__asm__ __volatile__(".chip 68040\n\t"
61
-
"pflusha\n\t"
62
-
".chip 68k");
63
-
else if (CPU_IS_020_OR_030)
64
-
__asm__ __volatile__("pflusha");
65
-
}
66
-
67
-
static inline void flush_tlb_mm(struct mm_struct *mm)
68
-
{
69
-
if (mm == current->active_mm)
70
-
__flush_tlb();
71
-
}
72
-
73
-
static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
74
-
{
75
-
if (vma->vm_mm == current->active_mm) {
76
-
mm_segment_t old_fs = get_fs();
77
-
set_fs(USER_DS);
78
-
__flush_tlb_one(addr);
79
-
set_fs(old_fs);
80
-
}
81
-
}
82
-
83
-
static inline void flush_tlb_range(struct vm_area_struct *vma,
84
-
unsigned long start, unsigned long end)
85
-
{
86
-
if (vma->vm_mm == current->active_mm)
87
-
__flush_tlb();
88
-
}
89
-
90
-
static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
91
-
{
92
-
flush_tlb_all();
93
-
}
94
-
95
-
#else
96
-
97
-
98
-
/* Reserved PMEGs. */
99
-
extern char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
100
-
extern unsigned long pmeg_vaddr[SUN3_PMEGS_NUM];
101
-
extern unsigned char pmeg_alloc[SUN3_PMEGS_NUM];
102
-
extern unsigned char pmeg_ctx[SUN3_PMEGS_NUM];
103
-
104
-
/* Flush all userspace mappings one by one... (why no flush command,
105
-
sun?) */
106
-
static inline void flush_tlb_all(void)
107
-
{
108
-
unsigned long addr;
109
-
unsigned char ctx, oldctx;
110
-
111
-
oldctx = sun3_get_context();
112
-
for(addr = 0x00000000; addr < TASK_SIZE; addr += SUN3_PMEG_SIZE) {
113
-
for(ctx = 0; ctx < 8; ctx++) {
114
-
sun3_put_context(ctx);
115
-
sun3_put_segmap(addr, SUN3_INVALID_PMEG);
116
-
}
117
-
}
118
-
119
-
sun3_put_context(oldctx);
120
-
/* erase all of the userspace pmeg maps, we've clobbered them
121
-
all anyway */
122
-
for(addr = 0; addr < SUN3_INVALID_PMEG; addr++) {
123
-
if(pmeg_alloc[addr] == 1) {
124
-
pmeg_alloc[addr] = 0;
125
-
pmeg_ctx[addr] = 0;
126
-
pmeg_vaddr[addr] = 0;
127
-
}
128
-
}
129
-
130
-
}
131
-
132
-
/* Clear user TLB entries within the context named in mm */
133
-
static inline void flush_tlb_mm (struct mm_struct *mm)
134
-
{
135
-
unsigned char oldctx;
136
-
unsigned char seg;
137
-
unsigned long i;
138
-
139
-
oldctx = sun3_get_context();
140
-
sun3_put_context(mm->context);
141
-
142
-
for(i = 0; i < TASK_SIZE; i += SUN3_PMEG_SIZE) {
143
-
seg = sun3_get_segmap(i);
144
-
if(seg == SUN3_INVALID_PMEG)
145
-
continue;
146
-
147
-
sun3_put_segmap(i, SUN3_INVALID_PMEG);
148
-
pmeg_alloc[seg] = 0;
149
-
pmeg_ctx[seg] = 0;
150
-
pmeg_vaddr[seg] = 0;
151
-
}
152
-
153
-
sun3_put_context(oldctx);
154
-
155
-
}
156
-
157
-
/* Flush a single TLB page. In this case, we're limited to flushing a
158
-
single PMEG */
159
-
static inline void flush_tlb_page (struct vm_area_struct *vma,
160
-
unsigned long addr)
161
-
{
162
-
unsigned char oldctx;
163
-
unsigned char i;
164
-
165
-
oldctx = sun3_get_context();
166
-
sun3_put_context(vma->vm_mm->context);
167
-
addr &= ~SUN3_PMEG_MASK;
168
-
if((i = sun3_get_segmap(addr)) != SUN3_INVALID_PMEG)
169
-
{
170
-
pmeg_alloc[i] = 0;
171
-
pmeg_ctx[i] = 0;
172
-
pmeg_vaddr[i] = 0;
173
-
sun3_put_segmap (addr, SUN3_INVALID_PMEG);
174
-
}
175
-
sun3_put_context(oldctx);
176
-
177
-
}
178
-
/* Flush a range of pages from TLB. */
179
-
180
-
static inline void flush_tlb_range (struct vm_area_struct *vma,
181
-
unsigned long start, unsigned long end)
182
-
{
183
-
struct mm_struct *mm = vma->vm_mm;
184
-
unsigned char seg, oldctx;
185
-
186
-
start &= ~SUN3_PMEG_MASK;
187
-
188
-
oldctx = sun3_get_context();
189
-
sun3_put_context(mm->context);
190
-
191
-
while(start < end)
192
-
{
193
-
if((seg = sun3_get_segmap(start)) == SUN3_INVALID_PMEG)
194
-
goto next;
195
-
if(pmeg_ctx[seg] == mm->context) {
196
-
pmeg_alloc[seg] = 0;
197
-
pmeg_ctx[seg] = 0;
198
-
pmeg_vaddr[seg] = 0;
199
-
}
200
-
sun3_put_segmap(start, SUN3_INVALID_PMEG);
201
-
next:
202
-
start += SUN3_PMEG_SIZE;
203
-
}
204
-
}
205
-
206
-
static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
207
-
{
208
-
flush_tlb_all();
209
-
}
210
-
211
-
/* Flush kernel page from TLB. */
212
-
static inline void flush_tlb_kernel_page (unsigned long addr)
213
-
{
214
-
sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG);
215
-
}
216
-
217
-
#endif
218
-
219
-
#endif /* _M68K_TLBFLUSH_H */
-55
arch/m68k/include/asm/tlbflush_no.h
-55
arch/m68k/include/asm/tlbflush_no.h
···
1
-
#ifndef _M68KNOMMU_TLBFLUSH_H
2
-
#define _M68KNOMMU_TLBFLUSH_H
3
-
4
-
/*
5
-
* Copyright (C) 2000 Lineo, David McCullough <davidm@uclinux.org>
6
-
* Copyright (C) 2000-2002, Greg Ungerer <gerg@snapgear.com>
7
-
*/
8
-
9
-
#include <asm/setup.h>
10
-
11
-
/*
12
-
* flush all user-space atc entries.
13
-
*/
14
-
static inline void __flush_tlb(void)
15
-
{
16
-
BUG();
17
-
}
18
-
19
-
static inline void __flush_tlb_one(unsigned long addr)
20
-
{
21
-
BUG();
22
-
}
23
-
24
-
#define flush_tlb() __flush_tlb()
25
-
26
-
/*
27
-
* flush all atc entries (both kernel and user-space entries).
28
-
*/
29
-
static inline void flush_tlb_all(void)
30
-
{
31
-
BUG();
32
-
}
33
-
34
-
static inline void flush_tlb_mm(struct mm_struct *mm)
35
-
{
36
-
BUG();
37
-
}
38
-
39
-
static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
40
-
{
41
-
BUG();
42
-
}
43
-
44
-
static inline void flush_tlb_range(struct mm_struct *mm,
45
-
unsigned long start, unsigned long end)
46
-
{
47
-
BUG();
48
-
}
49
-
50
-
static inline void flush_tlb_kernel_page(unsigned long addr)
51
-
{
52
-
BUG();
53
-
}
54
-
55
-
#endif /* _M68KNOMMU_TLBFLUSH_H */