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1
/**************************************************************************
1
/**************************************************************************
2
 *
2
 *
3
 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
3
 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA.
4
 * All Rights Reserved.
4
 * All Rights Reserved.
5
 *
5
 *
6
 * Permission is hereby granted, free of charge, to any person obtaining a
6
 * Permission is hereby granted, free of charge, to any person obtaining a
7
 * copy of this software and associated documentation files (the
7
 * copy of this software and associated documentation files (the
8
 * "Software"), to deal in the Software without restriction, including
8
 * "Software"), to deal in the Software without restriction, including
9
 * without limitation the rights to use, copy, modify, merge, publish,
9
 * without limitation the rights to use, copy, modify, merge, publish,
10
 * distribute, sub license, and/or sell copies of the Software, and to
10
 * distribute, sub license, and/or sell copies of the Software, and to
11
 * permit persons to whom the Software is furnished to do so, subject to
11
 * permit persons to whom the Software is furnished to do so, subject to
12
 * the following conditions:
12
 * the following conditions:
13
 *
13
 *
14
 * The above copyright notice and this permission notice (including the
14
 * The above copyright notice and this permission notice (including the
15
 * next paragraph) shall be included in all copies or substantial portions
15
 * next paragraph) shall be included in all copies or substantial portions
16
 * of the Software.
16
 * of the Software.
17
 *
17
 *
18
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
20
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
21
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
22
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
23
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25
 *
25
 *
26
 *
26
 *
27
 **************************************************************************/
27
 **************************************************************************/
28
/*
28
/*
29
 * Authors:
29
 * Authors:
30
 * Thomas Hellstrom 
30
 * Thomas Hellstrom 
31
 */
31
 */
32
 
32
 
33
#ifndef _DRM_MM_H_
33
#ifndef _DRM_MM_H_
34
#define _DRM_MM_H_
34
#define _DRM_MM_H_
35
 
35
 
36
/*
36
/*
37
 * Generic range manager structs
37
 * Generic range manager structs
38
 */
38
 */
39
#include 
39
#include 
40
#ifdef CONFIG_DEBUG_FS
40
#ifdef CONFIG_DEBUG_FS
41
#include 
41
#include 
42
#endif
42
#endif
43
 
43
 
44
struct drm_mm_node {
44
struct drm_mm_node {
45
	struct list_head node_list;
45
	struct list_head node_list;
46
	struct list_head hole_stack;
46
	struct list_head hole_stack;
47
	unsigned hole_follows : 1;
47
	unsigned hole_follows : 1;
48
	unsigned scanned_block : 1;
48
	unsigned scanned_block : 1;
49
	unsigned scanned_prev_free : 1;
49
	unsigned scanned_prev_free : 1;
50
	unsigned scanned_next_free : 1;
50
	unsigned scanned_next_free : 1;
51
	unsigned scanned_preceeds_hole : 1;
51
	unsigned scanned_preceeds_hole : 1;
52
	unsigned allocated : 1;
52
	unsigned allocated : 1;
53
	unsigned long color;
53
	unsigned long color;
54
	unsigned long start;
54
	unsigned long start;
55
	unsigned long size;
55
	unsigned long size;
56
	struct drm_mm *mm;
56
	struct drm_mm *mm;
57
};
57
};
58
 
58
 
59
struct drm_mm {
59
struct drm_mm {
60
	/* List of all memory nodes that immediately precede a free hole. */
60
	/* List of all memory nodes that immediately precede a free hole. */
61
	struct list_head hole_stack;
61
	struct list_head hole_stack;
62
	/* head_node.node_list is the list of all memory nodes, ordered
62
	/* head_node.node_list is the list of all memory nodes, ordered
63
	 * according to the (increasing) start address of the memory node. */
63
	 * according to the (increasing) start address of the memory node. */
64
	struct drm_mm_node head_node;
64
	struct drm_mm_node head_node;
65
	struct list_head unused_nodes;
65
	struct list_head unused_nodes;
66
	int num_unused;
66
	int num_unused;
67
	spinlock_t unused_lock;
67
	spinlock_t unused_lock;
68
	unsigned int scan_check_range : 1;
68
	unsigned int scan_check_range : 1;
69
	unsigned scan_alignment;
69
	unsigned scan_alignment;
70
	unsigned long scan_color;
70
	unsigned long scan_color;
71
	unsigned long scan_size;
71
	unsigned long scan_size;
72
	unsigned long scan_hit_start;
72
	unsigned long scan_hit_start;
73
	unsigned scan_hit_size;
73
	unsigned long scan_hit_end;
74
	unsigned scanned_blocks;
74
	unsigned scanned_blocks;
75
	unsigned long scan_start;
75
	unsigned long scan_start;
76
	unsigned long scan_end;
76
	unsigned long scan_end;
77
	struct drm_mm_node *prev_scanned_node;
77
	struct drm_mm_node *prev_scanned_node;
78
 
78
 
79
	void (*color_adjust)(struct drm_mm_node *node, unsigned long color,
79
	void (*color_adjust)(struct drm_mm_node *node, unsigned long color,
80
			     unsigned long *start, unsigned long *end);
80
			     unsigned long *start, unsigned long *end);
81
};
81
};
82
 
82
 
83
static inline bool drm_mm_node_allocated(struct drm_mm_node *node)
83
static inline bool drm_mm_node_allocated(struct drm_mm_node *node)
84
{
84
{
85
	return node->allocated;
85
	return node->allocated;
86
}
86
}
87
 
87
 
88
static inline bool drm_mm_initialized(struct drm_mm *mm)
88
static inline bool drm_mm_initialized(struct drm_mm *mm)
89
{
89
{
90
	return mm->hole_stack.next;
90
	return mm->hole_stack.next;
91
}
91
}
92
#define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \
92
#define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \
93
						&(mm)->head_node.node_list, \
93
						&(mm)->head_node.node_list, \
94
						node_list)
94
						node_list)
95
#define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \
95
#define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \
96
	for (entry = (mm)->prev_scanned_node, \
96
	for (entry = (mm)->prev_scanned_node, \
97
		next = entry ? list_entry(entry->node_list.next, \
97
		next = entry ? list_entry(entry->node_list.next, \
98
			struct drm_mm_node, node_list) : NULL; \
98
			struct drm_mm_node, node_list) : NULL; \
99
	     entry != NULL; entry = next, \
99
	     entry != NULL; entry = next, \
100
		next = entry ? list_entry(entry->node_list.next, \
100
		next = entry ? list_entry(entry->node_list.next, \
101
			struct drm_mm_node, node_list) : NULL) \
101
			struct drm_mm_node, node_list) : NULL) \
102
/*
102
/*
103
 * Basic range manager support (drm_mm.c)
103
 * Basic range manager support (drm_mm.c)
104
 */
104
 */
105
extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
105
extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
106
						    unsigned long size,
106
						    unsigned long size,
107
						    unsigned alignment,
107
						    unsigned alignment,
108
						    unsigned long color,
108
						    unsigned long color,
109
						    int atomic);
109
						    int atomic);
110
extern struct drm_mm_node *drm_mm_get_block_range_generic(
110
extern struct drm_mm_node *drm_mm_get_block_range_generic(
111
						struct drm_mm_node *node,
111
						struct drm_mm_node *node,
112
						unsigned long size,
112
						unsigned long size,
113
						unsigned alignment,
113
						unsigned alignment,
114
						unsigned long color,
114
						unsigned long color,
115
						unsigned long start,
115
						unsigned long start,
116
						unsigned long end,
116
						unsigned long end,
117
						int atomic);
117
						int atomic);
118
static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
118
static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
119
						   unsigned long size,
119
						   unsigned long size,
120
						   unsigned alignment)
120
						   unsigned alignment)
121
{
121
{
122
	return drm_mm_get_block_generic(parent, size, alignment, 0, 0);
122
	return drm_mm_get_block_generic(parent, size, alignment, 0, 0);
123
}
123
}
124
static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
124
static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
125
							  unsigned long size,
125
							  unsigned long size,
126
							  unsigned alignment)
126
							  unsigned alignment)
127
{
127
{
128
	return drm_mm_get_block_generic(parent, size, alignment, 0, 1);
128
	return drm_mm_get_block_generic(parent, size, alignment, 0, 1);
129
}
129
}
130
static inline struct drm_mm_node *drm_mm_get_block_range(
130
static inline struct drm_mm_node *drm_mm_get_block_range(
131
						struct drm_mm_node *parent,
131
						struct drm_mm_node *parent,
132
						unsigned long size,
132
						unsigned long size,
133
						unsigned alignment,
133
						unsigned alignment,
134
						unsigned long start,
134
						unsigned long start,
135
						unsigned long end)
135
						unsigned long end)
136
{
136
{
137
	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
137
	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
138
					      start, end, 0);
138
					      start, end, 0);
139
}
139
}
140
static inline struct drm_mm_node *drm_mm_get_color_block_range(
140
static inline struct drm_mm_node *drm_mm_get_color_block_range(
141
						struct drm_mm_node *parent,
141
						struct drm_mm_node *parent,
142
						unsigned long size,
142
						unsigned long size,
143
						unsigned alignment,
143
						unsigned alignment,
144
						unsigned long color,
144
						unsigned long color,
145
						unsigned long start,
145
						unsigned long start,
146
						unsigned long end)
146
						unsigned long end)
147
{
147
{
148
	return drm_mm_get_block_range_generic(parent, size, alignment, color,
148
	return drm_mm_get_block_range_generic(parent, size, alignment, color,
149
						start, end, 0);
149
						start, end, 0);
150
}
150
}
151
static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
151
static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
152
						struct drm_mm_node *parent,
152
						struct drm_mm_node *parent,
153
						unsigned long size,
153
						unsigned long size,
154
						unsigned alignment,
154
						unsigned alignment,
155
						unsigned long start,
155
						unsigned long start,
156
						unsigned long end)
156
						unsigned long end)
157
{
157
{
158
	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
158
	return drm_mm_get_block_range_generic(parent, size, alignment, 0,
159
						start, end, 1);
159
						start, end, 1);
160
}
160
}
-
 
161
 
161
extern int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
162
extern int drm_mm_insert_node(struct drm_mm *mm,
-
 
163
			      struct drm_mm_node *node,
-
 
164
			      unsigned long size,
162
			      unsigned long size, unsigned alignment);
165
			      unsigned alignment);
163
extern int drm_mm_insert_node_in_range(struct drm_mm *mm,
166
extern int drm_mm_insert_node_in_range(struct drm_mm *mm,
164
				       struct drm_mm_node *node,
167
				       struct drm_mm_node *node,
-
 
168
				       unsigned long size,
165
				       unsigned long size, unsigned alignment,
169
				       unsigned alignment,
166
				       unsigned long start, unsigned long end);
170
				       unsigned long start,
-
 
171
				       unsigned long end);
-
 
172
extern int drm_mm_insert_node_generic(struct drm_mm *mm,
-
 
173
				      struct drm_mm_node *node,
-
 
174
				      unsigned long size,
-
 
175
				      unsigned alignment,
-
 
176
				      unsigned long color);
-
 
177
extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
-
 
178
				       struct drm_mm_node *node,
-
 
179
				       unsigned long size,
-
 
180
				       unsigned alignment,
-
 
181
				       unsigned long color,
-
 
182
				       unsigned long start,
-
 
183
				       unsigned long end);
167
extern void drm_mm_put_block(struct drm_mm_node *cur);
184
extern void drm_mm_put_block(struct drm_mm_node *cur);
168
extern void drm_mm_remove_node(struct drm_mm_node *node);
185
extern void drm_mm_remove_node(struct drm_mm_node *node);
169
extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
186
extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
170
extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
187
extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
171
					      unsigned long size,
188
					      unsigned long size,
172
					      unsigned alignment,
189
					      unsigned alignment,
173
						      unsigned long color,
190
						      unsigned long color,
174
						      bool best_match);
191
						      bool best_match);
175
extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
192
extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
176
						const struct drm_mm *mm,
193
						const struct drm_mm *mm,
177
						unsigned long size,
194
						unsigned long size,
178
						unsigned alignment,
195
						unsigned alignment,
179
						unsigned long color,
196
						unsigned long color,
180
						unsigned long start,
197
						unsigned long start,
181
						unsigned long end,
198
						unsigned long end,
182
						bool best_match);
199
						bool best_match);
183
static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
200
static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
184
						     unsigned long size,
201
						     unsigned long size,
185
						     unsigned alignment,
202
						     unsigned alignment,
186
						     bool best_match)
203
						     bool best_match)
187
{
204
{
188
	return drm_mm_search_free_generic(mm,size, alignment, 0, best_match);
205
	return drm_mm_search_free_generic(mm,size, alignment, 0, best_match);
189
}
206
}
190
static inline  struct drm_mm_node *drm_mm_search_free_in_range(
207
static inline  struct drm_mm_node *drm_mm_search_free_in_range(
191
						const struct drm_mm *mm,
208
						const struct drm_mm *mm,
192
						unsigned long size,
209
						unsigned long size,
193
						unsigned alignment,
210
						unsigned alignment,
194
						unsigned long start,
211
						unsigned long start,
195
						unsigned long end,
212
						unsigned long end,
196
						bool best_match)
213
						bool best_match)
197
{
214
{
198
	return drm_mm_search_free_in_range_generic(mm, size, alignment, 0,
215
	return drm_mm_search_free_in_range_generic(mm, size, alignment, 0,
199
						   start, end, best_match);
216
						   start, end, best_match);
200
}
217
}
201
static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm,
218
static inline struct drm_mm_node *drm_mm_search_free_color(const struct drm_mm *mm,
202
							   unsigned long size,
219
							   unsigned long size,
203
							   unsigned alignment,
220
							   unsigned alignment,
204
							   unsigned long color,
221
							   unsigned long color,
205
							   bool best_match)
222
							   bool best_match)
206
{
223
{
207
	return drm_mm_search_free_generic(mm,size, alignment, color, best_match);
224
	return drm_mm_search_free_generic(mm,size, alignment, color, best_match);
208
}
225
}
209
static inline  struct drm_mm_node *drm_mm_search_free_in_range_color(
226
static inline  struct drm_mm_node *drm_mm_search_free_in_range_color(
210
						const struct drm_mm *mm,
227
						const struct drm_mm *mm,
211
						unsigned long size,
228
						unsigned long size,
212
						unsigned alignment,
229
						unsigned alignment,
213
						unsigned long color,
230
						unsigned long color,
214
						unsigned long start,
231
						unsigned long start,
215
						unsigned long end,
232
						unsigned long end,
216
						bool best_match)
233
						bool best_match)
217
{
234
{
218
	return drm_mm_search_free_in_range_generic(mm, size, alignment, color,
235
	return drm_mm_search_free_in_range_generic(mm, size, alignment, color,
219
						   start, end, best_match);
236
						   start, end, best_match);
220
}
237
}
221
extern int drm_mm_init(struct drm_mm *mm,
238
extern int drm_mm_init(struct drm_mm *mm,
222
		       unsigned long start,
239
		       unsigned long start,
223
		       unsigned long size);
240
		       unsigned long size);
224
extern void drm_mm_takedown(struct drm_mm *mm);
241
extern void drm_mm_takedown(struct drm_mm *mm);
225
extern int drm_mm_clean(struct drm_mm *mm);
242
extern int drm_mm_clean(struct drm_mm *mm);
226
extern int drm_mm_pre_get(struct drm_mm *mm);
243
extern int drm_mm_pre_get(struct drm_mm *mm);
227
 
244
 
228
static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
245
static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
229
{
246
{
230
	return block->mm;
247
	return block->mm;
231
}
248
}
232
 
249
 
233
void drm_mm_init_scan(struct drm_mm *mm,
250
void drm_mm_init_scan(struct drm_mm *mm,
234
		      unsigned long size,
251
		      unsigned long size,
235
				 unsigned alignment,
252
				 unsigned alignment,
236
		      unsigned long color);
253
		      unsigned long color);
237
void drm_mm_init_scan_with_range(struct drm_mm *mm,
254
void drm_mm_init_scan_with_range(struct drm_mm *mm,
238
				 unsigned long size,
255
				 unsigned long size,
239
				 unsigned alignment,
256
				 unsigned alignment,
240
				 unsigned long color,
257
				 unsigned long color,
241
				 unsigned long start,
258
				 unsigned long start,
242
				 unsigned long end);
259
				 unsigned long end);
243
int drm_mm_scan_add_block(struct drm_mm_node *node);
260
int drm_mm_scan_add_block(struct drm_mm_node *node);
244
int drm_mm_scan_remove_block(struct drm_mm_node *node);
261
int drm_mm_scan_remove_block(struct drm_mm_node *node);
245
 
262
 
246
extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);
263
extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);
247
#ifdef CONFIG_DEBUG_FS
264
#ifdef CONFIG_DEBUG_FS
248
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
265
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
249
#endif
266
#endif
250
 
267
 
251
#endif
268
#endif