src/gallium/drivers/r600/r600_pipe.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include <pipe/p_defines.h>
  26 #include <pipe/p_state.h>
  27 #include <pipe/p_context.h>
  28 #include <tgsi/tgsi_scan.h>
  29 #include <tgsi/tgsi_parse.h>
  30 #include <tgsi/tgsi_util.h>
  31 #include <util/u_blitter.h>
  32 #include <util/u_double_list.h>
  33 #include "util/u_format.h"
  34 #include <util/u_format_s3tc.h>
  35 #include <util/u_transfer.h>
  36 #include <util/u_surface.h>
  37 #include <util/u_pack_color.h>
  38 #include <util/u_memory.h>
  39 #include <util/u_inlines.h>
  40 #include "util/u_upload_mgr.h"
  41 #include "os/os_time.h"
  42 #include <pipebuffer/pb_buffer.h>
  43 #include "r600.h"
  44 #include "r600d.h"
  45 #include "r600_resource.h"
  46 #include "r600_shader.h"
  47 #include "r600_pipe.h"
  48 #include "r600_state_inlines.h"
  49
  50 /*
  51  * pipe_context
  52  */
  53 static struct r600_fence *r600_create_fence(struct r600_pipe_context *ctx)
  54 {
  55         struct r600_fence *fence = NULL;
  56
  57         if (!ctx->fences.bo) {
  58                 /* Create the shared buffer object */
  59                 ctx->fences.bo = r600_bo(ctx->radeon, 4096, 0, 0, 0);
  60                 if (!ctx->fences.bo) {
  61                         R600_ERR("r600: failed to create bo for fence objects\n");
  62                         return NULL;
  63                 }
  64                 ctx->fences.data = r600_bo_map(ctx->radeon, ctx->fences.bo, PB_USAGE_UNSYNCHRONIZED, NULL);
  65         }
  66
  67         if (!LIST_IS_EMPTY(&ctx->fences.pool)) {
  68                 struct r600_fence *entry;
  69
  70                 /* Try to find a freed fence that has been signalled */
  71                 LIST_FOR_EACH_ENTRY(entry, &ctx->fences.pool, head) {
  72                         if (ctx->fences.data[entry->index] != 0) {
  73                                 LIST_DELINIT(&entry->head);
  74                                 fence = entry;
  75                                 break;
  76                         }
  77                 }
  78         }
  79
  80         if (!fence) {
  81                 /* Allocate a new fence */
  82                 struct r600_fence_block *block;
  83                 unsigned index;
  84
  85                 if ((ctx->fences.next_index + 1) >= 1024) {
  86                         R600_ERR("r600: too many concurrent fences\n");
  87                         return NULL;
  88                 }
  89
  90                 index = ctx->fences.next_index++;
  91
  92                 if (!(index % FENCE_BLOCK_SIZE)) {
  93                         /* Allocate a new block */
  94                         block = CALLOC_STRUCT(r600_fence_block);
  95                         if (block == NULL)
  96                                 return NULL;
  97
  98                         LIST_ADD(&block->head, &ctx->fences.blocks);
  99                 } else {
 100                         block = LIST_ENTRY(struct r600_fence_block, ctx->fences.blocks.next, head);
 101                 }
 102
 103                 fence = &block->fences[index % FENCE_BLOCK_SIZE];
 104                 fence->ctx = ctx;
 105                 fence->index = index;
 106         }
 107
 108         pipe_reference_init(&fence->reference, 1);
 109
 110         ctx->fences.data[fence->index] = 0;
 111         r600_context_emit_fence(&ctx->ctx, ctx->fences.bo, fence->index, 1);
 112         return fence;
 113 }
 114
 115 static void r600_flush(struct pipe_context *ctx,
 116                         struct pipe_fence_handle **fence)
 117 {
 118         struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx;
 119         struct r600_fence **rfence = (struct r600_fence**)fence;
 120
 121 #if 0
 122         static int dc = 0;
 123         char dname[256];
 124 #endif
 125
 126         if (rfence)
 127                 *rfence = r600_create_fence(rctx);
 128
 129         if (!rctx->ctx.pm4_cdwords)
 130                 return;
 131
 132 #if 0
 133         sprintf(dname, "gallium-%08d.bof", dc);
 134         if (dc < 20) {
 135                 r600_context_dump_bof(&rctx->ctx, dname);
 136                 R600_ERR("dumped %s\n", dname);
 137         }
 138         dc++;
 139 #endif
 140         r600_context_flush(&rctx->ctx);
 141
 142         /* XXX This shouldn't be really necessary, but removing it breaks some tests.
 143          * Needless buffer reallocations may significantly increase memory consumption,
 144          * so getting rid of this call is important. */
 145         u_upload_flush(rctx->vbuf_mgr->uploader);
 146 }
 147
 148 static void r600_update_num_contexts(struct r600_screen *rscreen, int diff)
 149 {
 150         pipe_mutex_lock(rscreen->mutex_num_contexts);
 151         if (diff > 0) {
 152                 rscreen->num_contexts++;
 153
 154                 if (rscreen->num_contexts > 1)
 155                         util_slab_set_thread_safety(&rscreen->pool_buffers,
 156                                                     UTIL_SLAB_MULTITHREADED);
 157         } else {
 158                 rscreen->num_contexts--;
 159
 160                 if (rscreen->num_contexts <= 1)
 161                         util_slab_set_thread_safety(&rscreen->pool_buffers,
 162                                                     UTIL_SLAB_SINGLETHREADED);
 163         }
 164         pipe_mutex_unlock(rscreen->mutex_num_contexts);
 165 }
 166
 167 static void r600_destroy_context(struct pipe_context *context)
 168 {
 169         struct r600_pipe_context *rctx = (struct r600_pipe_context *)context;
 170
 171         rctx->context.delete_depth_stencil_alpha_state(&rctx->context, rctx->custom_dsa_flush);
 172         util_unreference_framebuffer_state(&rctx->framebuffer);
 173
 174         r600_context_fini(&rctx->ctx);
 175
 176         util_blitter_destroy(rctx->blitter);
 177
 178         for (int i = 0; i < R600_PIPE_NSTATES; i++) {
 179                 free(rctx->states[i]);
 180         }
 181
 182         u_vbuf_mgr_destroy(rctx->vbuf_mgr);
 183         util_slab_destroy(&rctx->pool_transfers);
 184
 185         if (rctx->fences.bo) {
 186                 struct r600_fence_block *entry, *tmp;
 187
 188                 LIST_FOR_EACH_ENTRY_SAFE(entry, tmp, &rctx->fences.blocks, head) {
 189                         LIST_DEL(&entry->head);
 190                         FREE(entry);
 191                 }
 192
 193                 r600_bo_unmap(rctx->radeon, rctx->fences.bo);
 194                 r600_bo_reference(rctx->radeon, &rctx->fences.bo, NULL);
 195         }
 196
 197         r600_update_num_contexts(rctx->screen, -1);
 198
 199         FREE(rctx);
 200 }
 201
 202 static struct pipe_context *r600_create_context(struct pipe_screen *screen, void *priv)
 203 {
 204         struct r600_pipe_context *rctx = CALLOC_STRUCT(r600_pipe_context);
 205         struct r600_screen* rscreen = (struct r600_screen *)screen;
 206         enum chip_class class;
 207
 208         if (rctx == NULL)
 209                 return NULL;
 210
 211         r600_update_num_contexts(rscreen, 1);
 212
 213         rctx->context.winsys = rscreen->screen.winsys;
 214         rctx->context.screen = screen;
 215         rctx->context.priv = priv;
 216         rctx->context.destroy = r600_destroy_context;
 217         rctx->context.flush = r600_flush;
 218
 219         /* Easy accessing of screen/winsys. */
 220         rctx->screen = rscreen;
 221         rctx->radeon = rscreen->radeon;
 222         rctx->family = r600_get_family(rctx->radeon);
 223
 224         rctx->fences.bo = NULL;
 225         rctx->fences.data = NULL;
 226         rctx->fences.next_index = 0;
 227         LIST_INITHEAD(&rctx->fences.pool);
 228         LIST_INITHEAD(&rctx->fences.blocks);
 229
 230         r600_init_blit_functions(rctx);
 231         r600_init_query_functions(rctx);
 232         r600_init_context_resource_functions(rctx);
 233         r600_init_surface_functions(rctx);
 234         rctx->context.draw_vbo = r600_draw_vbo;
 235
 236         switch (r600_get_family(rctx->radeon)) {
 237         case CHIP_R600:
 238         case CHIP_RV610:
 239         case CHIP_RV630:
 240         case CHIP_RV670:
 241         case CHIP_RV620:
 242         case CHIP_RV635:
 243         case CHIP_RS780:
 244         case CHIP_RS880:
 245         case CHIP_RV770:
 246         case CHIP_RV730:
 247         case CHIP_RV710:
 248         case CHIP_RV740:
 249                 r600_init_state_functions(rctx);
 250                 if (r600_context_init(&rctx->ctx, rctx->radeon)) {
 251                         r600_destroy_context(&rctx->context);
 252                         return NULL;
 253                 }
 254                 r600_init_config(rctx);
 255                 break;
 256         case CHIP_CEDAR:
 257         case CHIP_REDWOOD:
 258         case CHIP_JUNIPER:
 259         case CHIP_CYPRESS:
 260         case CHIP_HEMLOCK:
 261         case CHIP_PALM:
 262         case CHIP_BARTS:
 263         case CHIP_TURKS:
 264         case CHIP_CAICOS:
 265                 evergreen_init_state_functions(rctx);
 266                 if (evergreen_context_init(&rctx->ctx, rctx->radeon)) {
 267                         r600_destroy_context(&rctx->context);
 268                         return NULL;
 269                 }
 270                 evergreen_init_config(rctx);
 271                 break;
 272         default:
 273                 R600_ERR("unsupported family %d\n", r600_get_family(rctx->radeon));
 274                 r600_destroy_context(&rctx->context);
 275                 return NULL;
 276         }
 277
 278         util_slab_create(&rctx->pool_transfers,
 279                          sizeof(struct pipe_transfer), 64,
 280                          UTIL_SLAB_SINGLETHREADED);
 281
 282         rctx->vbuf_mgr = u_vbuf_mgr_create(&rctx->context, 1024 * 1024, 256,
 283                                            PIPE_BIND_VERTEX_BUFFER |
 284                                            PIPE_BIND_INDEX_BUFFER |
 285                                            PIPE_BIND_CONSTANT_BUFFER,
 286                                            U_VERTEX_FETCH_DWORD_ALIGNED);
 287         if (!rctx->vbuf_mgr) {
 288                 r600_destroy_context(&rctx->context);
 289                 return NULL;
 290         }
 291
 292         rctx->blitter = util_blitter_create(&rctx->context);
 293         if (rctx->blitter == NULL) {
 294                 r600_destroy_context(&rctx->context);
 295                 return NULL;
 296         }
 297
 298         class = r600_get_family_class(rctx->radeon);
 299         if (class == R600 || class == R700)
 300                 rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
 301         else
 302                 rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 303
 304         return &rctx->context;
 305 }
 306
 307 /*
 308  * pipe_screen
 309  */
 310 static const char* r600_get_vendor(struct pipe_screen* pscreen)
 311 {
 312         return "X.Org";
 313 }
 314
 315 static const char *r600_get_family_name(enum radeon_family family)
 316 {
 317         switch(family) {
 318         case CHIP_R600: return "AMD R600";
 319         case CHIP_RV610: return "AMD RV610";
 320         case CHIP_RV630: return "AMD RV630";
 321         case CHIP_RV670: return "AMD RV670";
 322         case CHIP_RV620: return "AMD RV620";
 323         case CHIP_RV635: return "AMD RV635";
 324         case CHIP_RS780: return "AMD RS780";
 325         case CHIP_RS880: return "AMD RS880";
 326         case CHIP_RV770: return "AMD RV770";
 327         case CHIP_RV730: return "AMD RV730";
 328         case CHIP_RV710: return "AMD RV710";
 329         case CHIP_RV740: return "AMD RV740";
 330         case CHIP_CEDAR: return "AMD CEDAR";
 331         case CHIP_REDWOOD: return "AMD REDWOOD";
 332         case CHIP_JUNIPER: return "AMD JUNIPER";
 333         case CHIP_CYPRESS: return "AMD CYPRESS";
 334         case CHIP_HEMLOCK: return "AMD HEMLOCK";
 335         case CHIP_PALM: return "AMD PALM";
 336         case CHIP_BARTS: return "AMD BARTS";
 337         case CHIP_TURKS: return "AMD TURKS";
 338         case CHIP_CAICOS: return "AMD CAICOS";
 339         default: return "AMD unknown";
 340         }
 341 }
 342
 343 static const char* r600_get_name(struct pipe_screen* pscreen)
 344 {
 345         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 346         enum radeon_family family = r600_get_family(rscreen->radeon);
 347
 348         return r600_get_family_name(family);
 349 }
 350
 351 static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 352 {
 353         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 354         enum radeon_family family = r600_get_family(rscreen->radeon);
 355
 356         switch (param) {
 357         /* Supported features (boolean caps). */
 358         case PIPE_CAP_NPOT_TEXTURES:
 359         case PIPE_CAP_TWO_SIDED_STENCIL:
 360         case PIPE_CAP_GLSL:
 361         case PIPE_CAP_DUAL_SOURCE_BLEND:
 362         case PIPE_CAP_ANISOTROPIC_FILTER:
 363         case PIPE_CAP_POINT_SPRITE:
 364         case PIPE_CAP_OCCLUSION_QUERY:
 365         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 366         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 367         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 368         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 369         case PIPE_CAP_SM3:
 370         case PIPE_CAP_TEXTURE_SWIZZLE:
 371         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 372         case PIPE_CAP_DEPTH_CLAMP:
 373         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 374         case PIPE_CAP_TGSI_INSTANCEID:
 375         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 376         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 377                 return 1;
 378         case PIPE_CAP_INDEP_BLEND_ENABLE:
 379                 /* R600 doesn't support per-MRT blends */
 380                 if (family == CHIP_R600)
 381                         return 0;
 382                 else
 383                         return 1;
 384
 385         /* Unsupported features (boolean caps). */
 386         case PIPE_CAP_STREAM_OUTPUT:
 387         case PIPE_CAP_PRIMITIVE_RESTART:
 388         case PIPE_CAP_INDEP_BLEND_FUNC: /* FIXME allow this */
 389         case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:
 390                 /* R600 doesn't support per-MRT blends */
 391                 if (family == CHIP_R600)
 392                         return 0;
 393                 else
 394                         return 0;
 395
 396         case PIPE_CAP_ARRAY_TEXTURES:
 397                 /* fix once the CS checker upstream is fixed */
 398                 return debug_get_bool_option("R600_ARRAY_TEXTURE", FALSE);
 399
 400         /* Texturing. */
 401         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 402         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 403         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 404                 if (family >= CHIP_CEDAR)
 405                         return 15;
 406                 else
 407                         return 14;
 408         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 409                 /* FIXME allow this once infrastructure is there */
 410                 return 16;
 411         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 412         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 413                 return 16;
 414
 415         /* Render targets. */
 416         case PIPE_CAP_MAX_RENDER_TARGETS:
 417                 /* FIXME some r6xx are buggy and can only do 4 */
 418                 return 8;
 419
 420         /* Fragment coordinate conventions. */
 421         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 422         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 423                 return 1;
 424         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 425         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 426                 return 0;
 427
 428         /* Timer queries, present when the clock frequency is non zero. */
 429         case PIPE_CAP_TIMER_QUERY:
 430                 return r600_get_clock_crystal_freq(rscreen->radeon) != 0;
 431
 432         default:
 433                 R600_ERR("r600: unknown param %d\n", param);
 434                 return 0;
 435         }
 436 }
 437
 438 static float r600_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 439 {
 440         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 441         enum radeon_family family = r600_get_family(rscreen->radeon);
 442
 443         switch (param) {
 444         case PIPE_CAP_MAX_LINE_WIDTH:
 445         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 446         case PIPE_CAP_MAX_POINT_WIDTH:
 447         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 448                 if (family >= CHIP_CEDAR)
 449                         return 16384.0f;
 450                 else
 451                         return 8192.0f;
 452         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 453                 return 16.0f;
 454         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 455                 return 16.0f;
 456         default:
 457                 R600_ERR("r600: unsupported paramf %d\n", param);
 458                 return 0.0f;
 459         }
 460 }
 461
 462 static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 463 {
 464         switch(shader)
 465         {
 466         case PIPE_SHADER_FRAGMENT:
 467         case PIPE_SHADER_VERTEX:
 468                 break;
 469         case PIPE_SHADER_GEOMETRY:
 470                 /* TODO: support and enable geometry programs */
 471                 return 0;
 472         default:
 473                 /* TODO: support tessellation on Evergreen */
 474                 return 0;
 475         }
 476
 477         /* TODO: all these should be fixed, since r600 surely supports much more! */
 478         switch (param) {
 479         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 480         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 481         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 482         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 483                 return 16384;
 484         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 485                 return 8; /* FIXME */
 486         case PIPE_SHADER_CAP_MAX_INPUTS:
 487                 if(shader == PIPE_SHADER_FRAGMENT)
 488                         return 10;
 489                 else
 490                         return 16;
 491         case PIPE_SHADER_CAP_MAX_TEMPS:
 492                 return 256; //max native temporaries
 493         case PIPE_SHADER_CAP_MAX_ADDRS:
 494                 return 1; //max native address registers/* FIXME Isn't this equal to TEMPS? */
 495         case PIPE_SHADER_CAP_MAX_CONSTS:
 496                 return R600_MAX_CONST_BUFFER_SIZE;
 497         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 498                 return R600_MAX_CONST_BUFFERS;
 499         case PIPE_SHADER_CAP_MAX_PREDS:
 500                 return 0; /* FIXME */
 501         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 502                 return 1;
 503         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 504         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 505         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 506         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 507                 return 1;
 508         case PIPE_SHADER_CAP_SUBROUTINES:
 509                 return 0;
 510         default:
 511                 return 0;
 512         }
 513 }
 514
 515 static boolean r600_is_format_supported(struct pipe_screen* screen,
 516                                         enum pipe_format format,
 517                                         enum pipe_texture_target target,
 518                                         unsigned sample_count,
 519                                         unsigned usage)
 520 {
 521         unsigned retval = 0;
 522         if (target >= PIPE_MAX_TEXTURE_TYPES) {
 523                 R600_ERR("r600: unsupported texture type %d\n", target);
 524                 return FALSE;
 525         }
 526
 527         if (!util_format_is_supported(format, usage))
 528                 return FALSE;
 529
 530         /* Multisample */
 531         if (sample_count > 1)
 532                 return FALSE;
 533
 534         if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 535             r600_is_sampler_format_supported(screen, format)) {
 536                 retval |= PIPE_BIND_SAMPLER_VIEW;
 537         }
 538
 539         if ((usage & (PIPE_BIND_RENDER_TARGET |
 540                         PIPE_BIND_DISPLAY_TARGET |
 541                         PIPE_BIND_SCANOUT |
 542                         PIPE_BIND_SHARED)) &&
 543                         r600_is_colorbuffer_format_supported(format)) {
 544                 retval |= usage &
 545                         (PIPE_BIND_RENDER_TARGET |
 546                          PIPE_BIND_DISPLAY_TARGET |
 547                          PIPE_BIND_SCANOUT |
 548                          PIPE_BIND_SHARED);
 549         }
 550
 551         if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
 552             r600_is_zs_format_supported(format)) {
 553                 retval |= PIPE_BIND_DEPTH_STENCIL;
 554         }
 555
 556         if (usage & PIPE_BIND_VERTEX_BUFFER) {
 557                 struct r600_screen *rscreen = (struct r600_screen *)screen;
 558                 enum radeon_family family = r600_get_family(rscreen->radeon);
 559
 560                 if (r600_is_vertex_format_supported(format, family)) {
 561                         retval |= PIPE_BIND_VERTEX_BUFFER;
 562                 }
 563         }
 564
 565         if (usage & PIPE_BIND_TRANSFER_READ)
 566                 retval |= PIPE_BIND_TRANSFER_READ;
 567         if (usage & PIPE_BIND_TRANSFER_WRITE)
 568                 retval |= PIPE_BIND_TRANSFER_WRITE;
 569
 570         return retval == usage;
 571 }
 572
 573 static void r600_destroy_screen(struct pipe_screen* pscreen)
 574 {
 575         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 576
 577         if (rscreen == NULL)
 578                 return;
 579
 580         radeon_decref(rscreen->radeon);
 581
 582         util_slab_destroy(&rscreen->pool_buffers);
 583         pipe_mutex_destroy(rscreen->mutex_num_contexts);
 584         FREE(rscreen);
 585 }
 586
 587 static void r600_fence_reference(struct pipe_screen *pscreen,
 588                                  struct pipe_fence_handle **ptr,
 589                                  struct pipe_fence_handle *fence)
 590 {
 591         struct r600_fence **oldf = (struct r600_fence**)ptr;
 592         struct r600_fence *newf = (struct r600_fence*)fence;
 593
 594         if (pipe_reference(&(*oldf)->reference, &newf->reference)) {
 595                 struct r600_pipe_context *ctx = (*oldf)->ctx;
 596                 LIST_ADDTAIL(&(*oldf)->head, &ctx->fences.pool);
 597         }
 598
 599         *ptr = fence;
 600 }
 601
 602 static boolean r600_fence_signalled(struct pipe_screen *pscreen,
 603                                     struct pipe_fence_handle *fence)
 604 {
 605         struct r600_fence *rfence = (struct r600_fence*)fence;
 606         struct r600_pipe_context *ctx = rfence->ctx;
 607
 608         return ctx->fences.data[rfence->index];
 609 }
 610
 611 static boolean r600_fence_finish(struct pipe_screen *pscreen,
 612                                  struct pipe_fence_handle *fence,
 613                                  uint64_t timeout)
 614 {
 615         struct r600_fence *rfence = (struct r600_fence*)fence;
 616         struct r600_pipe_context *ctx = rfence->ctx;
 617         int64_t start_time = 0;
 618         unsigned spins = 0;
 619
 620         if (timeout != PIPE_TIMEOUT_INFINITE) {
 621                 start_time = os_time_get();
 622
 623                 /* Convert to microseconds. */
 624                 timeout /= 1000;
 625         }
 626
 627         while (ctx->fences.data[rfence->index] == 0) {
 628                 if (++spins % 256)
 629                         continue;
 630 #ifdef PIPE_OS_UNIX
 631                 sched_yield();
 632 #else
 633                 os_time_sleep(10);
 634 #endif
 635                 if (timeout != PIPE_TIMEOUT_INFINITE &&
 636                     os_time_get() - start_time >= timeout) {
 637                         return FALSE;
 638                 }
 639         }
 640
 641         return TRUE;
 642 }
 643
 644 struct pipe_screen *r600_screen_create(struct radeon *radeon)
 645 {
 646         struct r600_screen *rscreen;
 647
 648         rscreen = CALLOC_STRUCT(r600_screen);
 649         if (rscreen == NULL) {
 650                 return NULL;
 651         }
 652
 653         rscreen->radeon = radeon;
 654         rscreen->screen.winsys = (struct pipe_winsys*)radeon;
 655         rscreen->screen.destroy = r600_destroy_screen;
 656         rscreen->screen.get_name = r600_get_name;
 657         rscreen->screen.get_vendor = r600_get_vendor;
 658         rscreen->screen.get_param = r600_get_param;
 659         rscreen->screen.get_shader_param = r600_get_shader_param;
 660         rscreen->screen.get_paramf = r600_get_paramf;
 661         rscreen->screen.is_format_supported = r600_is_format_supported;
 662         rscreen->screen.context_create = r600_create_context;
 663         rscreen->screen.fence_reference = r600_fence_reference;
 664         rscreen->screen.fence_signalled = r600_fence_signalled;
 665         rscreen->screen.fence_finish = r600_fence_finish;
 666         r600_init_screen_resource_functions(&rscreen->screen);
 667
 668         rscreen->tiling_info = r600_get_tiling_info(radeon);
 669         util_format_s3tc_init();
 670
 671         util_slab_create(&rscreen->pool_buffers,
 672                          sizeof(struct r600_resource_buffer), 64,
 673                          UTIL_SLAB_SINGLETHREADED);
 674
 675         pipe_mutex_init(rscreen->mutex_num_contexts);
 676
 677         return &rscreen->screen;
 678 }