src/mesa/drivers/dri/i965/intel_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 #include "glheader.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "simple_list.h"
  33 #include "extensions.h"
  34 #include "framebuffer.h"
  35 #include "imports.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "array_cache/acache.h"
  41
  42 #include "tnl/t_pipeline.h"
  43 #include "tnl/t_vertex.h"
  44
  45 #include "drivers/common/driverfuncs.h"
  46
  47 #include "intel_screen.h"
  48
  49 #include "i830_dri.h"
  50 #include "i830_common.h"
  51
  52 #include "intel_tex.h"
  53 #include "intel_span.h"
  54 #include "intel_ioctl.h"
  55 #include "intel_batchbuffer.h"
  56 #include "intel_blit.h"
  57 #include "intel_regions.h"
  58 #include "intel_buffer_objects.h"
  59
  60 #include "bufmgr.h"
  61
  62 #include "utils.h"
  63 #ifndef INTEL_DEBUG
  64 int INTEL_DEBUG = (0);
  65 #endif
  66
  67 #define need_GL_ARB_multisample
  68 #define need_GL_ARB_point_parameters
  69 #define need_GL_ARB_texture_compression
  70 #define need_GL_ARB_vertex_buffer_object
  71 #define need_GL_ARB_vertex_program
  72 #define need_GL_ARB_window_pos
  73 #define need_GL_EXT_blend_color
  74 #define need_GL_EXT_blend_equation_separate
  75 #define need_GL_EXT_blend_func_separate
  76 #define need_GL_EXT_blend_minmax
  77 #define need_GL_EXT_cull_vertex
  78 #define need_GL_EXT_fog_coord
  79 #define need_GL_EXT_multi_draw_arrays
  80 #define need_GL_EXT_secondary_color
  81 #include "extension_helper.h"
  82
  83 #ifndef VERBOSE
  84 int VERBOSE = 0;
  85 #endif
  86
  87 #if DEBUG_LOCKING
  88 char *prevLockFile;
  89 int prevLockLine;
  90 #endif
  91
  92 /***************************************
  93  * Mesa's Driver Functions
  94  ***************************************/
  95
  96 #define DRIVER_VERSION                     "4.1.3002"
  97
  98 static const GLubyte *intelGetString( GLcontext *ctx, GLenum name )
  99 {
 100    const char * chipset;
 101    static char buffer[128];
 102
 103    switch (name) {
 104    case GL_VENDOR:
 105       return (GLubyte *)"Tungsten Graphics, Inc";
 106       break;
 107
 108    case GL_RENDERER:
 109       switch (intel_context(ctx)->intelScreen->deviceID) {
 110       case PCI_CHIP_I965_Q:
 111          chipset = "Intel(R) 965Q"; break;
 112          break;
 113       case PCI_CHIP_I965_G:
 114       case PCI_CHIP_I965_G_1:
 115          chipset = "Intel(R) 965G"; break;
 116          break;
 117       case PCI_CHIP_I946_GZ:
 118          chipset = "Intel(R) 946GZ"; break;
 119          break;
 120       default:
 121          chipset = "Unknown Intel Chipset"; break;
 122       }
 123
 124       (void) driGetRendererString( buffer, chipset, DRIVER_VERSION, 0 );
 125       return (GLubyte *) buffer;
 126
 127    default:
 128       return NULL;
 129    }
 130 }
 131
 132
 133 /**
 134  * Extension strings exported by the intel driver.
 135  *
 136  * \note
 137  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 138  * old i830-specific driver.
 139  */
 140 const struct dri_extension card_extensions[] =
 141 {
 142     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 143     { "GL_ARB_multitexture",               NULL },
 144     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 145     { "GL_ARB_texture_border_clamp",       NULL },
 146     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 147     { "GL_ARB_texture_cube_map",           NULL },
 148     { "GL_ARB_texture_env_add",            NULL },
 149     { "GL_ARB_texture_env_combine",        NULL },
 150     { "GL_ARB_texture_env_dot3",           NULL },
 151     { "GL_ARB_texture_mirrored_repeat",    NULL },
 152     { "GL_ARB_texture_rectangle",          NULL },
 153     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 154     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 155     { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 156     { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 157     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 158     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 159     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 160     { "GL_EXT_blend_logic_op",             NULL },
 161     { "GL_EXT_blend_subtract",             NULL },
 162     { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 163     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 164     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 165     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 166     { "GL_EXT_stencil_wrap",               NULL },
 167     { "GL_EXT_texture_edge_clamp",         NULL },
 168     { "GL_EXT_texture_env_combine",        NULL },
 169     { "GL_EXT_texture_env_dot3",           NULL },
 170     { "GL_EXT_texture_filter_anisotropic", NULL },
 171     { "GL_EXT_texture_lod_bias",           NULL },
 172     { "GL_3DFX_texture_compression_FXT1",  NULL },
 173     { "GL_APPLE_client_storage",           NULL },
 174     { "GL_MESA_pack_invert",               NULL },
 175     { "GL_MESA_ycbcr_texture",             NULL },
 176     { "GL_NV_blend_square",                NULL },
 177     { "GL_SGIS_generate_mipmap",           NULL },
 178     { NULL,                                NULL }
 179 };
 180
 181
 182
 183 static const struct dri_debug_control debug_control[] =
 184 {
 185     { "fall",  DEBUG_FALLBACKS },
 186     { "tex",   DEBUG_TEXTURE },
 187     { "ioctl", DEBUG_IOCTL },
 188     { "prim",  DEBUG_PRIMS },
 189     { "vert",  DEBUG_VERTS },
 190     { "state", DEBUG_STATE },
 191     { "verb",  DEBUG_VERBOSE },
 192     { "dri",   DEBUG_DRI },
 193     { "dma",   DEBUG_DMA },
 194     { "san",   DEBUG_SANITY },
 195     { "sync",  DEBUG_SYNC },
 196     { "sleep", DEBUG_SLEEP },
 197     { "pix",   DEBUG_PIXEL },
 198     { "buf",   DEBUG_BUFMGR },
 199     { "stats", DEBUG_STATS },
 200     { "tile",  DEBUG_TILE },
 201     { "sing",  DEBUG_SINGLE_THREAD },
 202     { "thre",  DEBUG_SINGLE_THREAD },
 203     { "wm",    DEBUG_WM },
 204     { "vs",    DEBUG_VS },
 205     { NULL,    0 }
 206 };
 207
 208
 209 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 210 {
 211    struct intel_context *intel = intel_context(ctx);
 212
 213    _swrast_InvalidateState( ctx, new_state );
 214    _swsetup_InvalidateState( ctx, new_state );
 215    _ac_InvalidateState( ctx, new_state );
 216    _tnl_InvalidateState( ctx, new_state );
 217    _tnl_invalidate_vertex_state( ctx, new_state );
 218
 219    intel->NewGLState |= new_state;
 220
 221    if (intel->vtbl.invalidate_state)
 222       intel->vtbl.invalidate_state( intel, new_state );
 223 }
 224
 225
 226 void intelFlush( GLcontext *ctx )
 227 {
 228    struct intel_context *intel = intel_context( ctx );
 229
 230    bmLockAndFence(intel);
 231 }
 232
 233 void intelFinish( GLcontext *ctx )
 234 {
 235    struct intel_context *intel = intel_context( ctx );
 236
 237    bmFinishFence(intel, bmLockAndFence(intel));
 238 }
 239
 240
 241 void intelInitDriverFunctions( struct dd_function_table *functions )
 242 {
 243    _mesa_init_driver_functions( functions );
 244
 245    functions->Flush = intelFlush;
 246    functions->Finish = intelFinish;
 247    functions->GetString = intelGetString;
 248    functions->UpdateState = intelInvalidateState;
 249    functions->CopyColorTable = _swrast_CopyColorTable;
 250    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 251    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 252    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 253
 254    /* Pixel path fallbacks.
 255     */
 256    functions->Accum = _swrast_Accum;
 257    functions->Bitmap = _swrast_Bitmap;
 258    functions->ReadPixels = _swrast_ReadPixels;
 259    functions->DrawPixels = _swrast_DrawPixels;
 260
 261    /* CopyPixels can be accelerated even with the current memory
 262     * manager:
 263     */
 264    functions->CopyPixels = intelCopyPixels;
 265
 266    intelInitTextureFuncs( functions );
 267    intelInitStateFuncs( functions );
 268    intelInitBufferFuncs( functions );
 269 }
 270
 271
 272
 273 GLboolean intelInitContext( struct intel_context *intel,
 274                             const __GLcontextModes *mesaVis,
 275                             __DRIcontextPrivate *driContextPriv,
 276                             void *sharedContextPrivate,
 277                             struct dd_function_table *functions )
 278 {
 279    GLcontext *ctx = &intel->ctx;
 280    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 281    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 282    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 283    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 284       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 285
 286    if (!_mesa_initialize_context(&intel->ctx,
 287                                  mesaVis, shareCtx,
 288                                  functions,
 289                                  (void*) intel)) {
 290       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 291       return GL_FALSE;
 292    }
 293
 294    driContextPriv->driverPrivate = intel;
 295    intel->intelScreen = intelScreen;
 296    intel->driScreen = sPriv;
 297    intel->sarea = saPriv;
 298
 299
 300    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 301
 302    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 303       intel->strict_conformance = 1;
 304    }
 305
 306    if (intel->strict_conformance) {
 307       ctx->Const.MinLineWidth = 1.0;
 308       ctx->Const.MinLineWidthAA = 1.0;
 309       ctx->Const.MaxLineWidth = 1.0;
 310       ctx->Const.MaxLineWidthAA = 1.0;
 311       ctx->Const.LineWidthGranularity = 1.0;
 312    }
 313    else {
 314       ctx->Const.MinLineWidth = 1.0;
 315       ctx->Const.MinLineWidthAA = 1.0;
 316       ctx->Const.MaxLineWidth = 5.0;
 317       ctx->Const.MaxLineWidthAA = 5.0;
 318       ctx->Const.LineWidthGranularity = 0.5;
 319    }
 320
 321    ctx->Const.MinPointSize = 1.0;
 322    ctx->Const.MinPointSizeAA = 1.0;
 323    ctx->Const.MaxPointSize = 255.0;
 324    ctx->Const.MaxPointSizeAA = 3.0;
 325    ctx->Const.PointSizeGranularity = 1.0;
 326
 327    /* Initialize the software rasterizer and helper modules. */
 328    _swrast_CreateContext( ctx );
 329    _ac_CreateContext( ctx );
 330    _tnl_CreateContext( ctx );
 331    _swsetup_CreateContext( ctx );
 332
 333    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 334
 335    /* Configure swrast to match hardware characteristics: */
 336    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 337    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 338
 339    /* Dri stuff */
 340    intel->hHWContext = driContextPriv->hHWContext;
 341    intel->driFd = sPriv->fd;
 342    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 343
 344    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 345    intel->hw_stipple = 1;
 346
 347    switch(mesaVis->depthBits) {
 348    case 0:                      /* what to do in this case? */
 349    case 16:
 350       intel->depth_scale = 1.0/0xffff;
 351       intel->polygon_offset_scale = 1.0/0xffff;
 352       intel->depth_clear_mask = ~0;
 353       intel->ClearDepth = 0xffff;
 354       break;
 355    case 24:
 356       intel->depth_scale = 1.0/0xffffff;
 357       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 358       intel->depth_clear_mask = 0x00ffffff;
 359       intel->stencil_clear_mask = 0xff000000;
 360       intel->ClearDepth = 0x00ffffff;
 361       break;
 362    default:
 363       assert(0);
 364       break;
 365    }
 366
 367    /* Initialize swrast, tnl driver tables: */
 368    intelInitSpanFuncs( ctx );
 369
 370    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 371
 372    if (!intel->intelScreen->irq_active) {
 373       _mesa_printf("IRQs not active.  Exiting\n");
 374       exit(1);
 375    }
 376
 377    _math_matrix_ctr (&intel->ViewportMatrix);
 378
 379    driInitExtensions( ctx, card_extensions,
 380                       GL_TRUE );
 381
 382    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 383                                        debug_control );
 384
 385
 386    /* Buffer manager:
 387     */
 388    intel->bm = bm_fake_intel_Attach( intel );
 389
 390
 391    bmInitPool(intel,
 392               intel->intelScreen->tex.offset, /* low offset */
 393               intel->intelScreen->tex.map, /* low virtual */
 394               intel->intelScreen->tex.size,
 395               BM_MEM_AGP);
 396
 397    /* These are still static, but create regions for them.
 398     */
 399    intel->front_region =
 400       intel_region_create_static(intel,
 401                                  BM_MEM_AGP,
 402                                  intelScreen->front.offset,
 403                                  intelScreen->front.map,
 404                                  intelScreen->cpp,
 405                                  intelScreen->front.pitch / intelScreen->cpp,
 406                                  intelScreen->height,
 407                                  GL_FALSE);
 408
 409
 410    intel->back_region =
 411       intel_region_create_static(intel,
 412                                  BM_MEM_AGP,
 413                                  intelScreen->back.offset,
 414                                  intelScreen->back.map,
 415                                  intelScreen->cpp,
 416                                  intelScreen->back.pitch / intelScreen->cpp,
 417                                  intelScreen->height,
 418                                  (INTEL_DEBUG & DEBUG_TILE) ? 0 : 1);
 419
 420    /* Still assuming front.cpp == depth.cpp
 421     *
 422     * XXX: Setting tiling to false because Depth tiling only supports
 423     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 424     * resolve later.
 425     */
 426    intel->depth_region =
 427       intel_region_create_static(intel,
 428                                  BM_MEM_AGP,
 429                                  intelScreen->depth.offset,
 430                                  intelScreen->depth.map,
 431                                  intelScreen->cpp,
 432                                  intelScreen->depth.pitch / intelScreen->cpp,
 433                                  intelScreen->height,
 434                                  (INTEL_DEBUG & DEBUG_TILE) ? 0 : 1);
 435
 436    intel_bufferobj_init( intel );
 437    intel->batch = intel_batchbuffer_alloc( intel );
 438
 439    if (intel->ctx.Mesa_DXTn) {
 440       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 441       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 442    }
 443    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 444       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 445    }
 446
 447 /*    driInitTextureObjects( ctx, & intel->swapped, */
 448 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 449 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 450 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 451
 452
 453    if (getenv("INTEL_NO_RAST")) {
 454       fprintf(stderr, "disabling 3D rasterization\n");
 455       intel->no_rast = 1;
 456    }
 457
 458
 459    return GL_TRUE;
 460 }
 461
 462 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 463 {
 464    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 465
 466    assert(intel); /* should never be null */
 467    if (intel) {
 468       GLboolean   release_texture_heaps;
 469
 470
 471       intel->vtbl.destroy( intel );
 472
 473       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 474       _swsetup_DestroyContext (&intel->ctx);
 475       _tnl_DestroyContext (&intel->ctx);
 476       _ac_DestroyContext (&intel->ctx);
 477
 478       _swrast_DestroyContext (&intel->ctx);
 479       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 480       intel_batchbuffer_free(intel->batch);
 481       intel->batch = NULL;
 482
 483
 484       if ( release_texture_heaps ) {
 485          /* This share group is about to go away, free our private
 486           * texture object data.
 487           */
 488
 489          /* XXX: destroy the shared bufmgr struct here?
 490           */
 491       }
 492
 493       /* Free the regions created to describe front/back/depth
 494        * buffers:
 495        */
 496 #if 0
 497       intel_region_release(intel, &intel->front_region);
 498       intel_region_release(intel, &intel->back_region);
 499       intel_region_release(intel, &intel->depth_region);
 500       intel_region_release(intel, &intel->draw_region);
 501 #endif
 502
 503       /* free the Mesa context */
 504       _mesa_destroy_context(&intel->ctx);
 505    }
 506
 507    driContextPriv->driverPrivate = NULL;
 508 }
 509
 510 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 511 {
 512    return GL_TRUE;
 513 }
 514
 515 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 516                           __DRIdrawablePrivate *driDrawPriv,
 517                           __DRIdrawablePrivate *driReadPriv)
 518 {
 519
 520    if (driContextPriv) {
 521       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 522
 523       if ( intel->driDrawable != driDrawPriv ) {
 524          /* Shouldn't the readbuffer be stored also? */
 525          intel->driDrawable = driDrawPriv;
 526          intelWindowMoved( intel );
 527       }
 528
 529       _mesa_make_current(&intel->ctx,
 530                          (GLframebuffer *) driDrawPriv->driverPrivate,
 531                          (GLframebuffer *) driReadPriv->driverPrivate);
 532
 533       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 534    } else {
 535       _mesa_make_current(NULL, NULL, NULL);
 536    }
 537
 538    return GL_TRUE;
 539 }
 540
 541
 542 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 543 {
 544    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 545    __DRIscreenPrivate *sPriv = intel->driScreen;
 546    volatile drmI830Sarea * sarea = intel->sarea;
 547    int me = intel->hHWContext;
 548    int my_bufmgr = bmCtxId(intel);
 549
 550    drmGetLock(intel->driFd, intel->hHWContext, flags);
 551
 552    /* If the window moved, may need to set a new cliprect now.
 553     *
 554     * NOTE: This releases and regains the hw lock, so all state
 555     * checking must be done *after* this call:
 556     */
 557    if (dPriv)
 558       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 559
 560
 561    intel->locked = 1;
 562    intel->need_flush = 1;
 563
 564    /* Lost context?
 565     */
 566    if (sarea->ctxOwner != me) {
 567       DBG("Lost Context: sarea->ctxOwner %x me %x\n", sarea->ctxOwner, me);
 568       sarea->ctxOwner = me;
 569       intel->vtbl.lost_hardware( intel );
 570    }
 571
 572    /* As above, but don't evict the texture data on transitions
 573     * between contexts which all share a local buffer manager.
 574     */
 575    if (sarea->texAge != my_bufmgr) {
 576       DBG("Lost Textures: sarea->texAge %x my_bufmgr %x\n", sarea->ctxOwner, my_bufmgr);
 577       sarea->texAge = my_bufmgr;
 578       bm_fake_NotifyContendedLockTake( intel );
 579    }
 580
 581    /* Drawable changed?
 582     */
 583    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 584       intelWindowMoved( intel );
 585       intel->lastStamp = dPriv->lastStamp;
 586
 587       /* This works because the lock is always grabbed before emitting
 588        * commands and commands are always flushed prior to releasing
 589        * the lock.
 590        */
 591       intel->NewGLState |= _NEW_WINDOW_POS;
 592    }
 593 }
 594
 595 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 596
 597 /* Lock the hardware and validate our state.
 598  */
 599 void LOCK_HARDWARE( struct intel_context *intel )
 600 {
 601     char __ret=0;
 602
 603     _glthread_LOCK_MUTEX(lockMutex);
 604     assert(!intel->locked);
 605
 606
 607     DRM_CAS(intel->driHwLock, intel->hHWContext,
 608             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 609     if (__ret)
 610         intelContendedLock( intel, 0 );
 611
 612    intel->locked = 1;
 613
 614    if (intel->aub_wrap) {
 615       bm_fake_NotifyContendedLockTake( intel );
 616       intel->vtbl.lost_hardware( intel );
 617       intel->vtbl.aub_wrap(intel);
 618       intel->aub_wrap = 0;
 619    }
 620
 621    if (bmError(intel)) {
 622       bmEvictAll(intel);
 623       intel->vtbl.lost_hardware( intel );
 624    }
 625
 626    /* Make sure nothing has been emitted prior to getting the lock:
 627     */
 628    assert(intel->batch->map == 0);
 629
 630    /* XXX: postpone, may not be needed:
 631     */
 632    if (!intel_batchbuffer_map(intel->batch)) {
 633       bmEvictAll(intel);
 634       intel->vtbl.lost_hardware( intel );
 635
 636       /* This could only fail if the batchbuffer was greater in size
 637        * than the available texture memory:
 638        */
 639       if (!intel_batchbuffer_map(intel->batch)) {
 640          _mesa_printf("double failure to map batchbuffer\n");
 641          assert(0);
 642       }
 643    }
 644 }
 645
 646
 647 /* Unlock the hardware using the global current context
 648  */
 649 void UNLOCK_HARDWARE( struct intel_context *intel )
 650 {
 651    /* Make sure everything has been released:
 652     */
 653    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 654
 655    intel_batchbuffer_unmap(intel->batch);
 656    intel->vtbl.note_unlock( intel );
 657    intel->locked = 0;
 658
 659
 660
 661    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 662    _glthread_UNLOCK_MUTEX(lockMutex);
 663 }
 664