1 /************************************************************************** 2 * 3 * Copyright 2006 VMware, Inc. 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 VMWARE 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 <jfonseca (at) vmware.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/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 * 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 * 87 mm_buffer(struct pb_buffer *buf) 88 { 89 assert(buf); 90 return (struct mm_buffer *)buf; 91 } 92 93 94 static void 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 * 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 124 mm_buffer_unmap(struct pb_buffer *buf) 125 { 126 /* No-op */ 127 } 128 129 130 static enum pipe_error 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 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 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 * 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 225 mm_bufmgr_flush(struct pb_manager *mgr) 226 { 227 /* No-op */ 228 } 229 230 231 static void 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 * 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 FREE(mm); 291 return NULL; 292 } 293 294 295 struct pb_manager * 296 mm_bufmgr_create(struct pb_manager *provider, 297 pb_size size, pb_size align2) 298 { 299 struct pb_buffer *buffer; 300 struct pb_manager *mgr; 301 struct pb_desc desc; 302 303 if (!provider) 304 return NULL; 305 306 memset(&desc, 0, sizeof(desc)); 307 desc.alignment = 1 << align2; 308 309 buffer = provider->create_buffer(provider, size, &desc); 310 if (!buffer) 311 return NULL; 312 313 mgr = mm_bufmgr_create_from_buffer(buffer, size, align2); 314 if (!mgr) { 315 pb_reference(&buffer, NULL); 316 return NULL; 317 } 318 319 return mgr; 320 } 321
