src/mesa/drivers/dri/mach64/mach64_ioctl.c

   1 /* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      José Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #include "mach64_context.h"
  33 #include "mach64_state.h"
  34 #include "mach64_ioctl.h"
  35 #include "mach64_tex.h"
  36
  37 #include "imports.h"
  38 #include "macros.h"
  39
  40 #include "swrast/swrast.h"
  41
  42 #include "vblank.h"
  43
  44 #define MACH64_TIMEOUT        10 /* the DRM already has a timeout, so keep this small */
  45
  46
  47 /* =============================================================
  48  * Hardware vertex buffer handling
  49  */
  50
  51 /* Get a new VB from the pool of vertex buffers in AGP space.
  52  */
  53 drmBufPtr mach64GetBufferLocked( mach64ContextPtr mmesa )
  54 {
  55    int fd = mmesa->mach64Screen->driScreen->fd;
  56    int index = 0;
  57    int size = 0;
  58    drmDMAReq dma;
  59    drmBufPtr buf = NULL;
  60    int to = 0;
  61    int ret;
  62
  63    dma.context = mmesa->hHWContext;
  64    dma.send_count = 0;
  65    dma.send_list = NULL;
  66    dma.send_sizes = NULL;
  67    dma.flags = 0;
  68    dma.request_count = 1;
  69    dma.request_size = MACH64_BUFFER_SIZE;
  70    dma.request_list = &index;
  71    dma.request_sizes = &size;
  72    dma.granted_count = 0;
  73
  74    while ( !buf && ( to++ < MACH64_TIMEOUT ) ) {
  75       ret = drmDMA( fd, &dma );
  76
  77       if ( ret == 0 ) {
  78          buf = &mmesa->mach64Screen->buffers->list[index];
  79          buf->used = 0;
  80 #if ENABLE_PERF_BOXES
  81          /* Bump the performance counter */
  82          mmesa->c_vertexBuffers++;
  83 #endif
  84          return buf;
  85       }
  86    }
  87
  88    if ( !buf ) {
  89       drmCommandNone( fd, DRM_MACH64_RESET );
  90       UNLOCK_HARDWARE( mmesa );
  91       fprintf( stderr, "Error: Could not get new VB... exiting\n" );
  92       exit( -1 );
  93    }
  94
  95    return buf;
  96 }
  97
  98 void mach64FlushVerticesLocked( mach64ContextPtr mmesa )
  99 {
 100    XF86DRIClipRectPtr pbox = mmesa->pClipRects;
 101    int nbox = mmesa->numClipRects;
 102    void *buffer = mmesa->vert_buf;
 103    int count = mmesa->vert_used;
 104    int prim = mmesa->hw_primitive;
 105    int fd = mmesa->driScreen->fd;
 106    drmMach64Vertex vertex;
 107    int i, ret;
 108
 109    mmesa->num_verts = 0;
 110    mmesa->vert_used = 0;
 111
 112    if ( !count )
 113       return;
 114
 115    if ( mmesa->dirty & ~MACH64_UPLOAD_CLIPRECTS )
 116       mach64EmitHwStateLocked( mmesa );
 117
 118    if ( !nbox )
 119       count = 0;
 120
 121    if ( nbox > MACH64_NR_SAREA_CLIPRECTS )
 122       mmesa->dirty |= MACH64_UPLOAD_CLIPRECTS;
 123
 124    if ( !count || !(mmesa->dirty & MACH64_UPLOAD_CLIPRECTS) ) {
 125       /* FIXME: Is this really necessary */
 126       if ( nbox == 1 )
 127          mmesa->sarea->nbox = 0;
 128       else
 129          mmesa->sarea->nbox = nbox;
 130
 131       vertex.prim = prim;
 132       vertex.buf = buffer;
 133       vertex.used = count;
 134       vertex.discard = 1;
 135       ret = drmCommandWrite( fd, DRM_MACH64_VERTEX, &vertex, sizeof(drmMach64Vertex) );
 136       if ( ret ) {
 137          UNLOCK_HARDWARE( mmesa );
 138          fprintf( stderr, "Error flushing vertex buffer: return = %d\n", ret );
 139          exit( -1 );
 140       }
 141
 142    } else {
 143
 144       for ( i = 0 ; i < nbox ; ) {
 145          int nr = MIN2( i + MACH64_NR_SAREA_CLIPRECTS, nbox );
 146          XF86DRIClipRectPtr b = mmesa->sarea->boxes;
 147          int discard = 0;
 148
 149          mmesa->sarea->nbox = nr - i;
 150          for ( ; i < nr ; i++ ) {
 151             *b++ = pbox[i];
 152          }
 153
 154          /* Finished with the buffer?
 155           */
 156          if ( nr == nbox ) {
 157             discard = 1;
 158          }
 159
 160          mmesa->sarea->dirty |= MACH64_UPLOAD_CLIPRECTS;
 161
 162          vertex.prim = prim;
 163          vertex.buf = buffer;
 164          vertex.used = count;
 165          vertex.discard = discard;
 166          ret = drmCommandWrite( fd, DRM_MACH64_VERTEX, &vertex, sizeof(drmMach64Vertex) );
 167          if ( ret ) {
 168             UNLOCK_HARDWARE( mmesa );
 169             fprintf( stderr, "Error flushing vertex buffer: return = %d\n", ret );
 170             exit( -1 );
 171          }
 172       }
 173    }
 174
 175    mmesa->dirty &= ~MACH64_UPLOAD_CLIPRECTS;
 176 }
 177
 178 /* ================================================================
 179  * Texture uploads
 180  */
 181
 182 void mach64FireBlitLocked( mach64ContextPtr mmesa, drmBufPtr buffer,
 183                            GLint offset, GLint pitch, GLint format,
 184                            GLint x, GLint y, GLint width, GLint height )
 185 {
 186    drmMach64Blit blit;
 187    GLint ret;
 188
 189    blit.idx = buffer->idx;
 190    blit.offset = offset;
 191    blit.pitch = pitch;
 192    blit.format = format;
 193    blit.x = x;
 194    blit.y = y;
 195    blit.width = width;
 196    blit.height = height;
 197
 198    ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_BLIT,
 199                           &blit, sizeof(drmMach64Blit) );
 200
 201    if ( ret ) {
 202       UNLOCK_HARDWARE( mmesa );
 203       fprintf( stderr, "DRM_MACH64_BLIT: return = %d\n", ret );
 204       exit( -1 );
 205    }
 206 }
 207
 208
 209 /* ================================================================
 210  * SwapBuffers with client-side throttling
 211  */
 212 static void delay( void ) {
 213 /* Prevent an optimizing compiler from removing a spin loop */
 214 }
 215
 216 /* Throttle the frame rate -- only allow MACH64_MAX_QUEUED_FRAMES
 217  * pending swap buffers requests at a time.
 218  *
 219  * GH: We probably don't want a timeout here, as we can wait as
 220  * long as we want for a frame to complete.  If it never does, then
 221  * the card has locked.
 222  */
 223 static int mach64WaitForFrameCompletion( mach64ContextPtr mmesa )
 224 {
 225    int fd = mmesa->driFd;
 226    int i;
 227    int wait = 0;
 228    int frames;
 229
 230    while ( 1 ) {
 231       drmMach64GetParam gp;
 232       int ret;
 233
 234       if ( mmesa->sarea->frames_queued < MACH64_MAX_QUEUED_FRAMES ) {
 235          break;
 236       }
 237
 238       if (MACH64_DEBUG & DEBUG_NOWAIT) {
 239          return 1;
 240       }
 241
 242       gp.param = MACH64_PARAM_FRAMES_QUEUED;
 243       gp.value = &frames; /* also copied into sarea->frames_queued by DRM */
 244
 245       ret = drmCommandWriteRead( fd, DRM_MACH64_GETPARAM, &gp, sizeof(gp) );
 246
 247       if ( ret ) {
 248          UNLOCK_HARDWARE( mmesa );
 249          fprintf( stderr, "DRM_MACH64_GETPARAM: return = %d\n", ret );
 250          exit( -1 );
 251       }
 252
 253       /* Spin in place a bit so we aren't hammering the register */
 254       wait++;
 255
 256       for ( i = 0 ; i < 1024 ; i++ ) {
 257          delay();
 258       }
 259
 260    }
 261
 262    return wait;
 263 }
 264
 265 /* Copy the back color buffer to the front color buffer.
 266  */
 267 void mach64CopyBuffer( const __DRIdrawablePrivate *dPriv )
 268 {
 269    mach64ContextPtr mmesa;
 270    GLint nbox, i, ret;
 271    XF86DRIClipRectPtr pbox;
 272    GLboolean missed_target;
 273
 274    assert(dPriv);
 275    assert(dPriv->driContextPriv);
 276    assert(dPriv->driContextPriv->driverPrivate);
 277
 278    mmesa = (mach64ContextPtr) dPriv->driContextPriv->driverPrivate;
 279
 280    if ( MACH64_DEBUG & DEBUG_VERBOSE_API ) {
 281       fprintf( stderr, "\n********************************\n" );
 282       fprintf( stderr, "\n%s( %p )\n\n",
 283                __FUNCTION__, mmesa->glCtx );
 284       fflush( stderr );
 285    }
 286
 287    /* Flush any outstanding vertex buffers */
 288    FLUSH_BATCH( mmesa );
 289
 290    LOCK_HARDWARE( mmesa );
 291
 292    /* Throttle the frame rate -- only allow one pending swap buffers
 293     * request at a time.
 294     */
 295    if ( !mach64WaitForFrameCompletion( mmesa ) ) {
 296       mmesa->hardwareWentIdle = 1;
 297    } else {
 298       mmesa->hardwareWentIdle = 0;
 299    }
 300
 301 #if ENABLE_PERF_BOXES
 302    if ( mmesa->boxes ) {
 303       mach64PerformanceBoxesLocked( mmesa );
 304    }
 305 #endif
 306
 307    UNLOCK_HARDWARE( mmesa );
 308    driWaitForVBlank( dPriv, &mmesa->vbl_seq, mmesa->vblank_flags, &missed_target );
 309    LOCK_HARDWARE( mmesa );
 310
 311    /* use front buffer cliprects */
 312    nbox = dPriv->numClipRects;
 313    pbox = dPriv->pClipRects;
 314
 315    for ( i = 0 ; i < nbox ; ) {
 316       GLint nr = MIN2( i + MACH64_NR_SAREA_CLIPRECTS , nbox );
 317       XF86DRIClipRectPtr b = mmesa->sarea->boxes;
 318       GLint n = 0;
 319
 320       for ( ; i < nr ; i++ ) {
 321          *b++ = pbox[i];
 322          n++;
 323       }
 324       mmesa->sarea->nbox = n;
 325
 326       ret = drmCommandNone( mmesa->driFd, DRM_MACH64_SWAP );
 327
 328       if ( ret ) {
 329          UNLOCK_HARDWARE( mmesa );
 330          fprintf( stderr, "DRM_MACH64_SWAP: return = %d\n", ret );
 331          exit( -1 );
 332       }
 333    }
 334
 335    if ( MACH64_DEBUG & DEBUG_ALWAYS_SYNC ) {
 336       mach64WaitForIdleLocked( mmesa );
 337    }
 338
 339    UNLOCK_HARDWARE( mmesa );
 340
 341    mmesa->dirty |= (MACH64_UPLOAD_CONTEXT |
 342                     MACH64_UPLOAD_MISC |
 343                     MACH64_UPLOAD_CLIPRECTS);
 344
 345 #if ENABLE_PERF_BOXES
 346    /* Log the performance counters if necessary */
 347    mach64PerformanceCounters( mmesa );
 348 #endif
 349 }
 350
 351 #if ENABLE_PERF_BOXES
 352 /* ================================================================
 353  * Performance monitoring
 354  */
 355
 356 void mach64PerformanceCounters( mach64ContextPtr mmesa )
 357 {
 358
 359    if (MACH64_DEBUG & DEBUG_VERBOSE_COUNT) {
 360       /* report performance counters */
 361       fprintf( stderr, "mach64CopyBuffer: vertexBuffers:%i drawWaits:%i clears:%i\n",
 362                mmesa->c_vertexBuffers, mmesa->c_drawWaits, mmesa->c_clears );
 363    }
 364
 365    mmesa->c_vertexBuffers = 0;
 366    mmesa->c_drawWaits = 0;
 367    mmesa->c_clears = 0;
 368
 369    if ( mmesa->c_textureSwaps || mmesa->c_textureBytes || mmesa->c_agpTextureBytes ) {
 370       if (MACH64_DEBUG & DEBUG_VERBOSE_COUNT) {
 371          fprintf( stderr, "    textureSwaps:%i  textureBytes:%i agpTextureBytes:%i\n",
 372                   mmesa->c_textureSwaps, mmesa->c_textureBytes, mmesa->c_agpTextureBytes );
 373       }
 374       mmesa->c_textureSwaps = 0;
 375       mmesa->c_textureBytes = 0;
 376       mmesa->c_agpTextureBytes = 0;
 377    }
 378
 379    mmesa->c_texsrc_agp = 0;
 380    mmesa->c_texsrc_card = 0;
 381
 382    if (MACH64_DEBUG & DEBUG_VERBOSE_COUNT)
 383       fprintf( stderr, "---------------------------------------------------------\n" );
 384 }
 385
 386
 387 void mach64PerformanceBoxesLocked( mach64ContextPtr mmesa )
 388 {
 389    GLint ret;
 390    drmMach64Clear clear;
 391    GLint x, y, w, h;
 392    GLuint color;
 393    GLint nbox;
 394    GLint x1, y1, x2, y2;
 395    XF86DRIClipRectPtr b = mmesa->sarea->boxes;
 396
 397    /* save cliprects */
 398    nbox = mmesa->sarea->nbox;
 399    x1 = b[0].x1;
 400    y1 = b[0].y1;
 401    x2 = b[0].x2;
 402    y2 = b[0].y2;
 403
 404    /* setup a single cliprect and call the clear ioctl for each box */
 405    mmesa->sarea->nbox = 1;
 406
 407    w = h = 8;
 408    x = mmesa->drawX;
 409    y = mmesa->drawY;
 410    b[0].x1 = x;
 411    b[0].x2 = x + w;
 412    b[0].y1 = y;
 413    b[0].y2 = y + h;
 414
 415    clear.flags = MACH64_BACK;
 416    clear.clear_depth = 0;
 417
 418    /* Red box if DDFinish was called to wait for rendering to complete */
 419    if ( mmesa->c_drawWaits ) {
 420       color = mach64PackColor( mmesa->mach64Screen->cpp, 255, 0, 0, 0 );
 421
 422       clear.x = x;
 423       clear.y = y;
 424       clear.w = w;
 425       clear.h = h;
 426       clear.clear_color = color;
 427
 428       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 429                              &clear, sizeof(drmMach64Clear) );
 430
 431       if (ret < 0) {
 432          UNLOCK_HARDWARE( mmesa );
 433          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 434          exit( -1 );
 435       }
 436
 437    }
 438
 439    x += w;
 440    b[0].x1 = x;
 441    b[0].x2 = x + w;
 442
 443    /* draw a green box if we had to wait for previous frame(s) to complete */
 444    if ( !mmesa->hardwareWentIdle ) {
 445       color = mach64PackColor( mmesa->mach64Screen->cpp, 0, 255, 0, 0 );
 446
 447       clear.x = x;
 448       clear.y = y;
 449       clear.w = w;
 450       clear.h = h;
 451       clear.clear_color = color;
 452
 453       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 454                              &clear, sizeof(drmMach64Clear) );
 455
 456       if (ret < 0) {
 457          UNLOCK_HARDWARE( mmesa );
 458          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 459          exit( -1 );
 460       }
 461
 462    }
 463
 464    x += w;
 465    w = 20;
 466    b[0].x1 = x;
 467
 468    /* show approx. ratio of AGP/card textures used - Blue = AGP, Purple = Card */
 469    if ( mmesa->c_texsrc_agp || mmesa->c_texsrc_card ) {
 470       color = mach64PackColor( mmesa->mach64Screen->cpp, 0, 0, 255, 0 );
 471       w = ((GLfloat)mmesa->c_texsrc_agp / (GLfloat)(mmesa->c_texsrc_agp + mmesa->c_texsrc_card))*20;
 472       if (w > 1) {
 473
 474          b[0].x2 = x + w;
 475
 476          clear.x = x;
 477          clear.y = y;
 478          clear.w = w;
 479          clear.h = h;
 480          clear.clear_color = color;
 481
 482          ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 483                                 &clear, sizeof(drmMach64Clear) );
 484
 485          if (ret < 0) {
 486             UNLOCK_HARDWARE( mmesa );
 487             fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 488             exit( -1 );
 489          }
 490       }
 491
 492       x += w;
 493       w = 20 - w;
 494
 495       if (w > 1) {
 496          b[0].x1 = x;
 497          b[0].x2 = x + w;
 498
 499          color = mach64PackColor( mmesa->mach64Screen->cpp, 255, 0, 255, 0 );
 500
 501          clear.x = x;
 502          clear.y = y;
 503          clear.w = w;
 504          clear.h = h;
 505          clear.clear_color = color;
 506
 507          ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 508                                 &clear, sizeof(drmMach64Clear) );
 509
 510          if (ret < 0) {
 511             UNLOCK_HARDWARE( mmesa );
 512             fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 513             exit( -1 );
 514          }
 515       }
 516    }
 517
 518    x += w;
 519    w = 8;
 520    b[0].x1 = x;
 521    b[0].x2 = x + w;
 522
 523    /* Yellow box if we swapped textures */
 524    if ( mmesa->c_textureSwaps ) {
 525       color = mach64PackColor( mmesa->mach64Screen->cpp, 255, 255, 0, 0 );
 526
 527       clear.x = x;
 528       clear.y = y;
 529       clear.w = w;
 530       clear.h = h;
 531       clear.clear_color = color;
 532
 533       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 534                                 &clear, sizeof(drmMach64Clear) );
 535
 536       if (ret < 0) {
 537          UNLOCK_HARDWARE( mmesa );
 538          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 539          exit( -1 );
 540       }
 541
 542    }
 543
 544    h = 4;
 545    x += 8;
 546    b[0].x1 = x;
 547    b[0].y2 = y + h;
 548
 549    /* Purple bar for card memory texture blits/uploads */
 550    if ( mmesa->c_textureBytes ) {
 551       color = mach64PackColor( mmesa->mach64Screen->cpp, 255, 0, 255, 0 );
 552       w = mmesa->c_textureBytes / 16384;
 553       if ( w <= 0 )
 554          w = 1;
 555       if (w > (mmesa->driDrawable->w - 44))
 556          w = mmesa->driDrawable->w - 44;
 557
 558       b[0].x2 = x + w;
 559
 560       clear.x = x;
 561       clear.y = y;
 562       clear.w = w;
 563       clear.h = h;
 564       clear.clear_color = color;
 565
 566       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 567                                 &clear, sizeof(drmMach64Clear) );
 568
 569       if (ret < 0) {
 570          UNLOCK_HARDWARE( mmesa );
 571          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 572          exit( -1 );
 573       }
 574    }
 575
 576    /* Blue bar for AGP memory texture blits/uploads */
 577    if ( mmesa->c_agpTextureBytes ) {
 578       color = mach64PackColor( mmesa->mach64Screen->cpp, 0, 0, 255, 0 );
 579       w = mmesa->c_agpTextureBytes / 16384;
 580       if ( w <= 0 )
 581          w = 1;
 582       if (w > (mmesa->driDrawable->w - 44))
 583          w = mmesa->driDrawable->w - 44;
 584
 585       y += 4;
 586       b[0].x2 = x + w;
 587       b[0].y1 = y;
 588       b[0].y2 = y + h;
 589
 590       clear.x = x;
 591       clear.y = y;
 592       clear.w = w;
 593       clear.h = h;
 594       clear.clear_color = color;
 595
 596       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 597                                 &clear, sizeof(drmMach64Clear) );
 598
 599       if (ret < 0) {
 600          UNLOCK_HARDWARE( mmesa );
 601          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 602          exit( -1 );
 603       }
 604    }
 605
 606    /* Pink bar for number of vertex buffers used */
 607    if ( mmesa->c_vertexBuffers ) {
 608       color = mach64PackColor( mmesa->mach64Screen->cpp, 196, 128, 128, 0 );
 609
 610       w = mmesa->c_vertexBuffers;
 611       if (w > (mmesa->driDrawable->w))
 612          w = mmesa->driDrawable->w;
 613
 614       h = 8;
 615       x = mmesa->drawX;
 616       y = mmesa->drawY + 8;
 617       b[0].x1 = x;
 618       b[0].x2 = x + w;
 619       b[0].y1 = y;
 620       b[0].y2 = y + h;
 621
 622       clear.x = x;
 623       clear.y = y;
 624       clear.w = w;
 625       clear.h = h;
 626       clear.clear_color = color;
 627
 628       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 629                                 &clear, sizeof(drmMach64Clear) );
 630
 631       if (ret < 0) {
 632          UNLOCK_HARDWARE( mmesa );
 633          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 634          exit( -1 );
 635       }
 636    }
 637
 638    /* restore cliprects */
 639    mmesa->sarea->nbox = nbox;
 640    b[0].x1 = x1;
 641    b[0].y1 = y1;
 642    b[0].x2 = x2;
 643    b[0].y2 = y2;
 644
 645 }
 646
 647 #endif
 648
 649 /* ================================================================
 650  * Buffer clear
 651  */
 652
 653 static void mach64DDClear( GLcontext *ctx, GLbitfield mask, GLboolean all,
 654                            GLint cx, GLint cy, GLint cw, GLint ch )
 655 {
 656    mach64ContextPtr mmesa = MACH64_CONTEXT( ctx );
 657    __DRIdrawablePrivate *dPriv = mmesa->driDrawable;
 658    drmMach64Clear clear;
 659    GLuint flags = 0;
 660    GLint i;
 661    GLint ret;
 662
 663    if ( MACH64_DEBUG & DEBUG_VERBOSE_API ) {
 664       fprintf( stderr, "%s: all=%d %d,%d %dx%d\n",
 665                __FUNCTION__, all, cx, cy, cw, ch );
 666    }
 667
 668 #if ENABLE_PERF_BOXES
 669    /* Bump the performance counter */
 670    mmesa->c_clears++;
 671 #endif
 672
 673    FLUSH_BATCH( mmesa );
 674
 675    /* The only state changes we care about here are the RGBA colormask
 676     * and scissor/clipping.  We'll just update that state, if needed.
 677     */
 678    if ( mmesa->new_state & (MACH64_NEW_MASKS | MACH64_NEW_CLIP) ) {
 679       const GLuint save_state = mmesa->new_state;
 680       mmesa->new_state &= (MACH64_NEW_MASKS | MACH64_NEW_CLIP);
 681       mach64DDUpdateHWState( ctx );
 682       mmesa->new_state = save_state & ~(MACH64_NEW_MASKS | MACH64_NEW_CLIP);
 683    }
 684
 685    if ( mask & DD_FRONT_LEFT_BIT ) {
 686       flags |= MACH64_FRONT;
 687       mask &= ~DD_FRONT_LEFT_BIT;
 688    }
 689
 690    if ( mask & DD_BACK_LEFT_BIT ) {
 691       flags |= MACH64_BACK;
 692       mask &= ~DD_BACK_LEFT_BIT;
 693    }
 694
 695    if ( ( mask & DD_DEPTH_BIT ) && ctx->Depth.Mask ) {
 696       flags |= MACH64_DEPTH;
 697       mask &= ~DD_DEPTH_BIT;
 698    }
 699
 700    if ( mask )
 701       _swrast_Clear( ctx, mask, all, cx, cy, cw, ch );
 702
 703    if ( !flags )
 704       return;
 705
 706    LOCK_HARDWARE( mmesa );
 707
 708    /* This needs to be in the locked region, so updated drawable origin is used */
 709    /* Flip top to bottom */
 710    cx += mmesa->drawX;
 711    cy  = mmesa->drawY + dPriv->h - cy - ch;
 712
 713    /* HACK?
 714     */
 715    if ( mmesa->dirty & ~MACH64_UPLOAD_CLIPRECTS ) {
 716       mach64EmitHwStateLocked( mmesa );
 717    }
 718
 719    for ( i = 0 ; i < mmesa->numClipRects ; ) {
 720       int nr = MIN2( i + MACH64_NR_SAREA_CLIPRECTS, mmesa->numClipRects );
 721       XF86DRIClipRectPtr box = mmesa->pClipRects;
 722       XF86DRIClipRectPtr b = mmesa->sarea->boxes;
 723       GLint n = 0;
 724
 725       if ( !all ) {
 726          for ( ; i < nr ; i++ ) {
 727             GLint x = box[i].x1;
 728             GLint y = box[i].y1;
 729             GLint w = box[i].x2 - x;
 730             GLint h = box[i].y2 - y;
 731
 732             if ( x < cx ) w -= cx - x, x = cx;
 733             if ( y < cy ) h -= cy - y, y = cy;
 734             if ( x + w > cx + cw ) w = cx + cw - x;
 735             if ( y + h > cy + ch ) h = cy + ch - y;
 736             if ( w <= 0 ) continue;
 737             if ( h <= 0 ) continue;
 738
 739             b->x1 = x;
 740             b->y1 = y;
 741             b->x2 = x + w;
 742             b->y2 = y + h;
 743             b++;
 744             n++;
 745          }
 746       } else {
 747          for ( ; i < nr ; i++ ) {
 748             *b++ = box[i];
 749             n++;
 750          }
 751       }
 752
 753       mmesa->sarea->nbox = n;
 754
 755       if ( MACH64_DEBUG & DEBUG_VERBOSE_IOCTL ) {
 756          fprintf( stderr,
 757                   "DRM_MACH64_CLEAR: flag 0x%x color %x depth %x nbox %d\n",
 758                   flags,
 759                   (GLuint)mmesa->ClearColor,
 760                   (GLuint)mmesa->ClearDepth,
 761                   mmesa->sarea->nbox );
 762       }
 763
 764       clear.flags = flags;
 765       clear.x = cx;
 766       clear.y = cy;
 767       clear.w = cw;
 768       clear.h = ch;
 769       clear.clear_color = mmesa->ClearColor;
 770       clear.clear_depth = mmesa->ClearDepth;
 771
 772       ret = drmCommandWrite( mmesa->driFd, DRM_MACH64_CLEAR,
 773                              &clear, sizeof(drmMach64Clear) );
 774
 775       if ( ret ) {
 776          UNLOCK_HARDWARE( mmesa );
 777          fprintf( stderr, "DRM_MACH64_CLEAR: return = %d\n", ret );
 778          exit( -1 );
 779       }
 780    }
 781
 782    UNLOCK_HARDWARE( mmesa );
 783
 784    mmesa->dirty |= (MACH64_UPLOAD_CONTEXT |
 785                     MACH64_UPLOAD_MISC |
 786                     MACH64_UPLOAD_CLIPRECTS);
 787
 788 }
 789
 790
 791 void mach64WaitForIdleLocked( mach64ContextPtr mmesa )
 792 {
 793    int fd = mmesa->driFd;
 794    int to = 0;
 795    int ret;
 796
 797    do {
 798       ret = drmCommandNone( fd, DRM_MACH64_IDLE );
 799    } while ( ( ret == -EBUSY ) && ( to++ < MACH64_TIMEOUT ) );
 800
 801    if ( ret < 0 ) {
 802       drmCommandNone( fd, DRM_MACH64_RESET );
 803       UNLOCK_HARDWARE( mmesa );
 804       fprintf( stderr, "Error: Mach64 timed out... exiting\n" );
 805       exit( -1 );
 806    }
 807 }
 808
 809 /* Flush the DMA queue to the hardware */
 810 void mach64FlushDMALocked( mach64ContextPtr mmesa )
 811 {
 812    int fd = mmesa->driFd;
 813    int ret;
 814
 815    ret = drmCommandNone( fd, DRM_MACH64_FLUSH );
 816
 817    if ( ret < 0 ) {
 818       drmCommandNone( fd, DRM_MACH64_RESET );
 819       UNLOCK_HARDWARE( mmesa );
 820       fprintf( stderr, "Error flushing DMA... exiting\n" );
 821       exit( -1 );
 822    }
 823
 824    mmesa->dirty |= (MACH64_UPLOAD_CONTEXT |
 825                     MACH64_UPLOAD_MISC |
 826                     MACH64_UPLOAD_CLIPRECTS);
 827
 828 }
 829
 830 /* For client-side state emits - currently unused */
 831 void mach64UploadHwStateLocked( mach64ContextPtr mmesa )
 832 {
 833    ATISAREAPrivPtr sarea = mmesa->sarea;
 834
 835    mach64_context_regs_t *regs = &sarea->ContextState;
 836    unsigned int dirty = sarea->dirty;
 837    CARD32 offset = ((regs->tex_size_pitch & 0xf0) >> 2);
 838
 839    DMALOCALS;
 840
 841    DMAGETPTR( 19*2 );
 842
 843    if ( dirty & MACH64_UPLOAD_MISC ) {
 844       DMAOUTREG( MACH64_DP_MIX, regs->dp_mix );
 845       DMAOUTREG( MACH64_DP_SRC, regs->dp_src );
 846       DMAOUTREG( MACH64_CLR_CMP_CNTL, regs->clr_cmp_cntl );
 847       DMAOUTREG( MACH64_GUI_TRAJ_CNTL, regs->gui_traj_cntl );
 848       DMAOUTREG( MACH64_SC_LEFT_RIGHT, regs->sc_left_right );
 849       DMAOUTREG( MACH64_SC_TOP_BOTTOM, regs->sc_top_bottom );
 850       sarea->dirty &= ~MACH64_UPLOAD_MISC;
 851    }
 852
 853    if ( dirty & MACH64_UPLOAD_DST_OFF_PITCH ) {
 854       DMAOUTREG( MACH64_DST_OFF_PITCH, regs->dst_off_pitch );
 855       sarea->dirty &= ~MACH64_UPLOAD_DST_OFF_PITCH;
 856    }
 857    if ( dirty & MACH64_UPLOAD_Z_OFF_PITCH ) {
 858       DMAOUTREG( MACH64_Z_OFF_PITCH, regs->z_off_pitch );
 859       sarea->dirty &= ~MACH64_UPLOAD_Z_OFF_PITCH;
 860    }
 861    if ( dirty & MACH64_UPLOAD_Z_ALPHA_CNTL ) {
 862       DMAOUTREG( MACH64_Z_CNTL, regs->z_cntl );
 863       DMAOUTREG( MACH64_ALPHA_TST_CNTL, regs->alpha_tst_cntl );
 864       sarea->dirty &= ~MACH64_UPLOAD_Z_ALPHA_CNTL;
 865    }
 866    if ( dirty & MACH64_UPLOAD_SCALE_3D_CNTL ) {
 867       DMAOUTREG( MACH64_SCALE_3D_CNTL, regs->scale_3d_cntl );
 868       sarea->dirty &= ~MACH64_UPLOAD_SCALE_3D_CNTL;
 869    }
 870    if ( dirty & MACH64_UPLOAD_DP_FOG_CLR ) {
 871       DMAOUTREG( MACH64_DP_FOG_CLR, regs->dp_fog_clr );
 872       sarea->dirty &= ~MACH64_UPLOAD_DP_FOG_CLR;
 873    }
 874    if ( dirty & MACH64_UPLOAD_DP_WRITE_MASK ) {
 875       DMAOUTREG( MACH64_DP_WRITE_MASK, regs->dp_write_mask );
 876       sarea->dirty &= ~MACH64_UPLOAD_DP_WRITE_MASK;
 877    }
 878    if ( dirty & MACH64_UPLOAD_DP_PIX_WIDTH ) {
 879       DMAOUTREG( MACH64_DP_PIX_WIDTH, regs->dp_pix_width );
 880       sarea->dirty &= ~MACH64_UPLOAD_DP_PIX_WIDTH;
 881    }
 882    if ( dirty & MACH64_UPLOAD_SETUP_CNTL ) {
 883       DMAOUTREG( MACH64_SETUP_CNTL, regs->setup_cntl );
 884       sarea->dirty &= ~MACH64_UPLOAD_SETUP_CNTL;
 885    }
 886
 887    if ( dirty & MACH64_UPLOAD_TEXTURE ) {
 888       DMAOUTREG( MACH64_TEX_SIZE_PITCH, regs->tex_size_pitch );
 889       DMAOUTREG( MACH64_TEX_CNTL, regs->tex_cntl );
 890       DMAOUTREG( MACH64_SECONDARY_TEX_OFF, regs->secondary_tex_off );
 891       DMAOUTREG( MACH64_TEX_0_OFF + offset, regs->tex_offset );
 892       sarea->dirty &= ~MACH64_UPLOAD_TEXTURE;
 893    }
 894
 895 #if 0
 896    if ( dirty & MACH64_UPLOAD_CLIPRECTS ) {
 897       DMAOUTREG( MACH64_SC_LEFT_RIGHT, regs->sc_left_right );
 898       DMAOUTREG( MACH64_SC_TOP_BOTTOM, regs->sc_top_bottom );
 899       sarea->dirty &= ~MACH64_UPLOAD_CLIPRECTS;
 900    }
 901 #endif
 902
 903    sarea->dirty = 0;
 904
 905    DMAADVANCE();
 906 }
 907
 908 void mach64DDInitIoctlFuncs( GLcontext *ctx )
 909 {
 910     ctx->Driver.Clear = mach64DDClear;
 911 }