src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c

   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 *
  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 }