1 /**************************************************************************
2 *
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
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
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /**
29 * \file
30 * Buffer manager using the old texture memory manager.
31 *
32 * \author Jose Fonseca <jrfonseca@tungstengraphics.com>
33 */
34
35
36 #include "pipe/p_defines.h"
37 #include "util/u_debug.h"
38 #include "os/os_thread.h"
39 #include "util/u_memory.h"
40 #include "util/u_double_list.h"
41 #include "util/u_mm.h"
42 #include "pb_buffer.h"
43 #include "pb_bufmgr.h"
44
45
46 /**
47 * Convenience macro (type safe).
48 */
49 #define SUPER(__derived) (&(__derived)->base)
50
51
52 struct mm_pb_manager
53 {
54 struct pb_manager base;
55
56 pipe_mutex mutex;
57
58 pb_size size;
59 struct mem_block *heap;
60
61 pb_size align2;
62
63 struct pb_buffer *buffer;
64 void *map;
65 };
66
67
68 static INLINE struct mm_pb_manager *
mm_pb_manager(struct pb_manager * mgr)69 mm_pb_manager(struct pb_manager *mgr)
70 {
71 assert(mgr);
72 return (struct mm_pb_manager *)mgr;
73 }
74
75
76 struct mm_buffer
77 {
78 struct pb_buffer base;
79
80 struct mm_pb_manager *mgr;
81
82 struct mem_block *block;
83 };
84
85
86 static INLINE struct mm_buffer *
mm_buffer(struct pb_buffer * buf)87 mm_buffer(struct pb_buffer *buf)
88 {
89 assert(buf);
90 return (struct mm_buffer *)buf;
91 }
92
93
94 static void
mm_buffer_destroy(struct pb_buffer * buf)95 mm_buffer_destroy(struct pb_buffer *buf)
96 {
97 struct mm_buffer *mm_buf = mm_buffer(buf);
98 struct mm_pb_manager *mm = mm_buf->mgr;
99
100 assert(!pipe_is_referenced(&mm_buf->base.reference));
101
102 pipe_mutex_lock(mm->mutex);
103 u_mmFreeMem(mm_buf->block);
104 FREE(mm_buf);
105 pipe_mutex_unlock(mm->mutex);
106 }
107
108
109 static void *
mm_buffer_map(struct pb_buffer * buf,unsigned flags,void * flush_ctx)110 mm_buffer_map(struct pb_buffer *buf,
111 unsigned flags,
112 void *flush_ctx)
113 {
114 struct mm_buffer *mm_buf = mm_buffer(buf);
115 struct mm_pb_manager *mm = mm_buf->mgr;
116
117 /* XXX: it will be necessary to remap here to propagate flush_ctx */
118
119 return (unsigned char *) mm->map + mm_buf->block->ofs;
120 }
121
122
123 static void
mm_buffer_unmap(struct pb_buffer * buf)124 mm_buffer_unmap(struct pb_buffer *buf)
125 {
126 /* No-op */
127 }
128
129
130 static enum pipe_error
mm_buffer_validate(struct pb_buffer * buf,struct pb_validate * vl,unsigned flags)131 mm_buffer_validate(struct pb_buffer *buf,
132 struct pb_validate *vl,
133 unsigned flags)
134 {
135 struct mm_buffer *mm_buf = mm_buffer(buf);
136 struct mm_pb_manager *mm = mm_buf->mgr;
137 return pb_validate(mm->buffer, vl, flags);
138 }
139
140
141 static void
mm_buffer_fence(struct pb_buffer * buf,struct pipe_fence_handle * fence)142 mm_buffer_fence(struct pb_buffer *buf,
143 struct pipe_fence_handle *fence)
144 {
145 struct mm_buffer *mm_buf = mm_buffer(buf);
146 struct mm_pb_manager *mm = mm_buf->mgr;
147 pb_fence(mm->buffer, fence);
148 }
149
150
151 static void
mm_buffer_get_base_buffer(struct pb_buffer * buf,struct pb_buffer ** base_buf,pb_size * offset)152 mm_buffer_get_base_buffer(struct pb_buffer *buf,
153 struct pb_buffer **base_buf,
154 pb_size *offset)
155 {
156 struct mm_buffer *mm_buf = mm_buffer(buf);
157 struct mm_pb_manager *mm = mm_buf->mgr;
158 pb_get_base_buffer(mm->buffer, base_buf, offset);
159 *offset += mm_buf->block->ofs;
160 }
161
162
163 static const struct pb_vtbl
164 mm_buffer_vtbl = {
165 mm_buffer_destroy,
166 mm_buffer_map,
167 mm_buffer_unmap,
168 mm_buffer_validate,
169 mm_buffer_fence,
170 mm_buffer_get_base_buffer
171 };
172
173
174 static struct pb_buffer *
mm_bufmgr_create_buffer(struct pb_manager * mgr,pb_size size,const struct pb_desc * desc)175 mm_bufmgr_create_buffer(struct pb_manager *mgr,
176 pb_size size,
177 const struct pb_desc *desc)
178 {
179 struct mm_pb_manager *mm = mm_pb_manager(mgr);
180 struct mm_buffer *mm_buf;
181
182 /* We don't handle alignments larger then the one initially setup */
183 assert(pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2));
184 if(!pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2))
185 return NULL;
186
187 pipe_mutex_lock(mm->mutex);
188
189 mm_buf = CALLOC_STRUCT(mm_buffer);
190 if (!mm_buf) {
191 pipe_mutex_unlock(mm->mutex);
192 return NULL;
193 }
194
195 pipe_reference_init(&mm_buf->base.reference, 1);
196 mm_buf->base.alignment = desc->alignment;
197 mm_buf->base.usage = desc->usage;
198 mm_buf->base.size = size;
199
200 mm_buf->base.vtbl = &mm_buffer_vtbl;
201
202 mm_buf->mgr = mm;
203
204 mm_buf->block = u_mmAllocMem(mm->heap, (int)size, (int)mm->align2, 0);
205 if(!mm_buf->block) {
206 #if 0
207 debug_printf("warning: heap full\n");
208 mmDumpMemInfo(mm->heap);
209 #endif
210 FREE(mm_buf);
211 pipe_mutex_unlock(mm->mutex);
212 return NULL;
213 }
214
215 /* Some sanity checks */
216 assert(0 <= (pb_size)mm_buf->block->ofs && (pb_size)mm_buf->block->ofs < mm->size);
217 assert(size <= (pb_size)mm_buf->block->size && (pb_size)mm_buf->block->ofs + (pb_size)mm_buf->block->size <= mm->size);
218
219 pipe_mutex_unlock(mm->mutex);
220 return SUPER(mm_buf);
221 }
222
223
224 static void
mm_bufmgr_flush(struct pb_manager * mgr)225 mm_bufmgr_flush(struct pb_manager *mgr)
226 {
227 /* No-op */
228 }
229
230
231 static void
mm_bufmgr_destroy(struct pb_manager * mgr)232 mm_bufmgr_destroy(struct pb_manager *mgr)
233 {
234 struct mm_pb_manager *mm = mm_pb_manager(mgr);
235
236 pipe_mutex_lock(mm->mutex);
237
238 u_mmDestroy(mm->heap);
239
240 pb_unmap(mm->buffer);
241 pb_reference(&mm->buffer, NULL);
242
243 pipe_mutex_unlock(mm->mutex);
244
245 FREE(mgr);
246 }
247
248
249 struct pb_manager *
mm_bufmgr_create_from_buffer(struct pb_buffer * buffer,pb_size size,pb_size align2)250 mm_bufmgr_create_from_buffer(struct pb_buffer *buffer,
251 pb_size size, pb_size align2)
252 {
253 struct mm_pb_manager *mm;
254
255 if(!buffer)
256 return NULL;
257
258 mm = CALLOC_STRUCT(mm_pb_manager);
259 if (!mm)
260 return NULL;
261
262 mm->base.destroy = mm_bufmgr_destroy;
263 mm->base.create_buffer = mm_bufmgr_create_buffer;
264 mm->base.flush = mm_bufmgr_flush;
265
266 mm->size = size;
267 mm->align2 = align2; /* 64-byte alignment */
268
269 pipe_mutex_init(mm->mutex);
270
271 mm->buffer = buffer;
272
273 mm->map = pb_map(mm->buffer,
274 PB_USAGE_CPU_READ |
275 PB_USAGE_CPU_WRITE, NULL);
276 if(!mm->map)
277 goto failure;
278
279 mm->heap = u_mmInit(0, (int)size);
280 if (!mm->heap)
281 goto failure;
282
283 return SUPER(mm);
284
285 failure:
286 if(mm->heap)
287 u_mmDestroy(mm->heap);
288 if(mm->map)
289 pb_unmap(mm->buffer);
290 if(mm)
291 FREE(mm);
292 return NULL;
293 }
294
295
296 struct pb_manager *
mm_bufmgr_create(struct pb_manager * provider,pb_size size,pb_size align2)297 mm_bufmgr_create(struct pb_manager *provider,
298 pb_size size, pb_size align2)
299 {
300 struct pb_buffer *buffer;
301 struct pb_manager *mgr;
302 struct pb_desc desc;
303
304 if(!provider)
305 return NULL;
306
307 memset(&desc, 0, sizeof(desc));
308 desc.alignment = 1 << align2;
309
310 buffer = provider->create_buffer(provider, size, &desc);
311 if (!buffer)
312 return NULL;
313
314 mgr = mm_bufmgr_create_from_buffer(buffer, size, align2);
315 if (!mgr) {
316 pb_reference(&buffer, NULL);
317 return NULL;
318 }
319
320 return mgr;
321 }
322