aboutsummaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
blob: f975cfbfe93ea68e87546dbe04d2fbb5fe65370f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
/**************************************************************************
 *
 * Copyright 2006 VMware, Inc.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

/**
 * \file
 * Buffer manager using the old texture memory manager.
 * 
 * \author Jose Fonseca <jfonseca@vmware.com>
 */


#include "pipe/p_defines.h"
#include "util/u_debug.h"
#include "os/os_thread.h"
#include "util/u_memory.h"
#include "util/list.h"
#include "util/u_mm.h"
#include "pb_buffer.h"
#include "pb_bufmgr.h"


/**
 * Convenience macro (type safe).
 */
#define SUPER(__derived) (&(__derived)->base)


struct mm_pb_manager
{
   struct pb_manager base;
   
   mtx_t mutex;
   
   pb_size size;
   struct mem_block *heap;
   
   pb_size align2;
   
   struct pb_buffer *buffer;
   void *map;
};


static inline struct mm_pb_manager *
mm_pb_manager(struct pb_manager *mgr)
{
   assert(mgr);
   return (struct mm_pb_manager *)mgr;
}


struct mm_buffer
{
   struct pb_buffer base;
   
   struct mm_pb_manager *mgr;
   
   struct mem_block *block;
};


static inline struct mm_buffer *
mm_buffer(struct pb_buffer *buf)
{
   assert(buf);
   return (struct mm_buffer *)buf;
}


static void
mm_buffer_destroy(struct pb_buffer *buf)
{
   struct mm_buffer *mm_buf = mm_buffer(buf);
   struct mm_pb_manager *mm = mm_buf->mgr;
   
   assert(!pipe_is_referenced(&mm_buf->base.reference));
   
   mtx_lock(&mm->mutex);
   u_mmFreeMem(mm_buf->block);
   FREE(mm_buf);
   mtx_unlock(&mm->mutex);
}


static void *
mm_buffer_map(struct pb_buffer *buf,
              enum pb_usage_flags flags,
              void *flush_ctx)
{
   struct mm_buffer *mm_buf = mm_buffer(buf);
   struct mm_pb_manager *mm = mm_buf->mgr;

   /* XXX: it will be necessary to remap here to propagate flush_ctx */

   return (unsigned char *) mm->map + mm_buf->block->ofs;
}


static void
mm_buffer_unmap(struct pb_buffer *buf)
{
   /* No-op */
}


static enum pipe_error 
mm_buffer_validate(struct pb_buffer *buf, 
                   struct pb_validate *vl,
                   enum pb_usage_flags flags)
{
   struct mm_buffer *mm_buf = mm_buffer(buf);
   struct mm_pb_manager *mm = mm_buf->mgr;
   return pb_validate(mm->buffer, vl, flags);
}


static void
mm_buffer_fence(struct pb_buffer *buf, 
                struct pipe_fence_handle *fence)
{
   struct mm_buffer *mm_buf = mm_buffer(buf);
   struct mm_pb_manager *mm = mm_buf->mgr;
   pb_fence(mm->buffer, fence);
}


static void
mm_buffer_get_base_buffer(struct pb_buffer *buf,
                          struct pb_buffer **base_buf,
                          pb_size *offset)
{
   struct mm_buffer *mm_buf = mm_buffer(buf);
   struct mm_pb_manager *mm = mm_buf->mgr;
   pb_get_base_buffer(mm->buffer, base_buf, offset);
   *offset += mm_buf->block->ofs;
}


static const struct pb_vtbl 
mm_buffer_vtbl = {
      mm_buffer_destroy,
      mm_buffer_map,
      mm_buffer_unmap,
      mm_buffer_validate,
      mm_buffer_fence,
      mm_buffer_get_base_buffer
};


static struct pb_buffer *
mm_bufmgr_create_buffer(struct pb_manager *mgr, 
                        pb_size size,
                        const struct pb_desc *desc)
{
   struct mm_pb_manager *mm = mm_pb_manager(mgr);
   struct mm_buffer *mm_buf;

   /* We don't handle alignments larger then the one initially setup */
   assert(pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2));
   if(!pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2))
      return NULL;
   
   mtx_lock(&mm->mutex);

   mm_buf = CALLOC_STRUCT(mm_buffer);
   if (!mm_buf) {
      mtx_unlock(&mm->mutex);
      return NULL;
   }

   pipe_reference_init(&mm_buf->base.reference, 1);
   mm_buf->base.alignment = desc->alignment;
   mm_buf->base.usage = desc->usage;
   mm_buf->base.size = size;
   
   mm_buf->base.vtbl = &mm_buffer_vtbl;
   
   mm_buf->mgr = mm;
   
   mm_buf->block = u_mmAllocMem(mm->heap, (int)size, (int)mm->align2, 0);
   if(!mm_buf->block) {
#if 0
      debug_printf("warning: heap full\n");
      mmDumpMemInfo(mm->heap);
#endif
      FREE(mm_buf);
      mtx_unlock(&mm->mutex);
      return NULL;
   }
   
   /* Some sanity checks */
   assert(0 <= (pb_size)mm_buf->block->ofs && (pb_size)mm_buf->block->ofs < mm->size);
   assert(size <= (pb_size)mm_buf->block->size && (pb_size)mm_buf->block->ofs + (pb_size)mm_buf->block->size <= mm->size);
   
   mtx_unlock(&mm->mutex);
   return SUPER(mm_buf);
}


static void
mm_bufmgr_flush(struct pb_manager *mgr)
{
   /* No-op */
}


static void
mm_bufmgr_destroy(struct pb_manager *mgr)
{
   struct mm_pb_manager *mm = mm_pb_manager(mgr);
   
   mtx_lock(&mm->mutex);

   u_mmDestroy(mm->heap);
   
   pb_unmap(mm->buffer);
   pb_reference(&mm->buffer, NULL);
   
   mtx_unlock(&mm->mutex);
   
   FREE(mgr);
}


struct pb_manager *
mm_bufmgr_create_from_buffer(struct pb_buffer *buffer, 
                             pb_size size, pb_size align2) 
{
   struct mm_pb_manager *mm;

   if (!buffer)
      return NULL;
   
   mm = CALLOC_STRUCT(mm_pb_manager);
   if (!mm)
      return NULL;

   mm->base.destroy = mm_bufmgr_destroy;
   mm->base.create_buffer = mm_bufmgr_create_buffer;
   mm->base.flush = mm_bufmgr_flush;

   mm->size = size;
   mm->align2 = align2; /* 64-byte alignment */

   (void) mtx_init(&mm->mutex, mtx_plain);

   mm->buffer = buffer; 

   mm->map = pb_map(mm->buffer, 
		    PB_USAGE_CPU_READ |
		    PB_USAGE_CPU_WRITE, NULL);
   if(!mm->map)
      goto failure;

   mm->heap = u_mmInit(0, (int)size); 
   if (!mm->heap)
      goto failure;

   return SUPER(mm);
   
failure:
   if(mm->heap)
      u_mmDestroy(mm->heap);
   if(mm->map)
      pb_unmap(mm->buffer);
   FREE(mm);
   return NULL;
}


struct pb_manager *
mm_bufmgr_create(struct pb_manager *provider, 
                 pb_size size, pb_size align2) 
{
   struct pb_buffer *buffer;
   struct pb_manager *mgr;
   struct pb_desc desc;

   if (!provider)
      return NULL;
   
   memset(&desc, 0, sizeof(desc));
   desc.alignment = 1 << align2;
   
   buffer = provider->create_buffer(provider, size, &desc); 
   if (!buffer)
      return NULL;
   
   mgr = mm_bufmgr_create_from_buffer(buffer, size, align2);
   if (!mgr) {
      pb_reference(&buffer, NULL);
      return NULL;
   }

  return mgr;
}