src/mesa/drivers/dri/i810/i810ioctl.c

   1
   2 #include <unistd.h> /* for usleep() */
   3
   4 #include "main/glheader.h"
   5 #include "main/mtypes.h"
   6 #include "main/macros.h"
   7 #include "main/dd.h"
   8 #include "swrast/swrast.h"
   9 #include "main/mm.h"
  10
  11 #include "i810screen.h"
  12 #include "i810_dri.h"
  13
  14 #include "main/context.h"
  15 #include "i810ioctl.h"
  16 #include "i810state.h"
  17
  18 static drmBufPtr i810_get_buffer_ioctl( i810ContextPtr imesa )
  19 {
  20    drmI810DMA dma;
  21    drmBufPtr buf;
  22    int retcode, i = 0;
  23
  24    while (1) {
  25       retcode = drmCommandWriteRead(imesa->driFd, DRM_I810_GETBUF,
  26                                     &dma, sizeof(drmI810DMA));
  27
  28       if (dma.granted == 1 && retcode == 0)
  29          break;
  30
  31       if (++i > 1000) {
  32          drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
  33          i = 0;
  34       }
  35    }
  36
  37    buf = &(imesa->i810Screen->bufs->list[dma.request_idx]);
  38    buf->idx = dma.request_idx;
  39    buf->used = 0;
  40    buf->total = dma.request_size;
  41    buf->address = (drmAddress)dma.virtual;
  42
  43    return buf;
  44 }
  45
  46
  47
  48 #define DEPTH_SCALE ((1<<16)-1)
  49
  50 static void i810Clear( struct gl_context *ctx, GLbitfield mask )
  51 {
  52    i810ContextPtr imesa = I810_CONTEXT( ctx );
  53    __DRIdrawable *dPriv = imesa->driDrawable;
  54    const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask[0]);
  55    drmI810Clear clear;
  56    unsigned int i;
  57
  58    clear.flags = 0;
  59    clear.clear_color = imesa->ClearColor;
  60    clear.clear_depth = (GLuint) (ctx->Depth.Clear * DEPTH_SCALE);
  61
  62    I810_FIREVERTICES( imesa );
  63
  64    if ((mask & BUFFER_BIT_FRONT_LEFT) && colorMask == ~0U) {
  65       clear.flags |= I810_FRONT;
  66       mask &= ~BUFFER_BIT_FRONT_LEFT;
  67    }
  68
  69    if ((mask & BUFFER_BIT_BACK_LEFT) && colorMask == ~0U) {
  70       clear.flags |= I810_BACK;
  71       mask &= ~BUFFER_BIT_BACK_LEFT;
  72    }
  73
  74    if (mask & BUFFER_BIT_DEPTH) {
  75       if (ctx->Depth.Mask)
  76          clear.flags |= I810_DEPTH;
  77       mask &= ~BUFFER_BIT_DEPTH;
  78    }
  79
  80    if (clear.flags) {
  81       GLint cx, cy, cw, ch;
  82
  83       LOCK_HARDWARE( imesa );
  84
  85       /* compute region after locking: */
  86       cx = ctx->DrawBuffer->_Xmin;
  87       cy = ctx->DrawBuffer->_Ymin;
  88       cw = ctx->DrawBuffer->_Xmax - cx;
  89       ch = ctx->DrawBuffer->_Ymax - cy;
  90
  91       /* flip top to bottom */
  92       cy = dPriv->h-cy-ch;
  93       cx += imesa->drawX;
  94       cy += imesa->drawY;
  95
  96       for (i = 0 ; i < imesa->numClipRects ; )
  97       {
  98          unsigned int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, imesa->numClipRects);
  99          drm_clip_rect_t *box = imesa->pClipRects;
 100          drm_clip_rect_t *b = (drm_clip_rect_t *)imesa->sarea->boxes;
 101          int n = 0;
 102
 103          if (cw != dPriv->w || ch != dPriv->h) {
 104             /* clear sub region */
 105             for ( ; i < nr ; i++) {
 106                GLint x = box[i].x1;
 107                GLint y = box[i].y1;
 108                GLint w = box[i].x2 - x;
 109                GLint h = box[i].y2 - y;
 110
 111                if (x < cx) w -= cx - x, x = cx;
 112                if (y < cy) h -= cy - y, y = cy;
 113                if (x + w > cx + cw) w = cx + cw - x;
 114                if (y + h > cy + ch) h = cy + ch - y;
 115                if (w <= 0) continue;
 116                if (h <= 0) continue;
 117
 118                b->x1 = x;
 119                b->y1 = y;
 120                b->x2 = x + w;
 121                b->y2 = y + h;
 122                b++;
 123                n++;
 124             }
 125          } else {
 126             /* clear whole buffer */
 127             for ( ; i < nr ; i++) {
 128                *b++ = box[i];
 129                n++;
 130             }
 131          }
 132
 133          imesa->sarea->nbox = n;
 134          drmCommandWrite(imesa->driFd, DRM_I810_CLEAR,
 135                          &clear, sizeof(drmI810Clear));
 136       }
 137
 138       UNLOCK_HARDWARE( imesa );
 139       imesa->upload_cliprects = GL_TRUE;
 140    }
 141
 142    if (mask)
 143       _swrast_Clear( ctx, mask );
 144 }
 145
 146
 147
 148
 149 /*
 150  * Copy the back buffer to the front buffer.
 151  */
 152 void i810CopyBuffer( const __DRIdrawable *dPriv )
 153 {
 154    i810ContextPtr imesa;
 155    drm_clip_rect_t *pbox;
 156    int nbox, i, tmp;
 157
 158    assert(dPriv);
 159    assert(dPriv->driContextPriv);
 160    assert(dPriv->driContextPriv->driverPrivate);
 161
 162    imesa = (i810ContextPtr) dPriv->driContextPriv->driverPrivate;
 163
 164    I810_FIREVERTICES( imesa );
 165    LOCK_HARDWARE( imesa );
 166
 167    pbox = (drm_clip_rect_t *)dPriv->pClipRects;
 168    nbox = dPriv->numClipRects;
 169
 170    for (i = 0 ; i < nbox ; )
 171    {
 172       int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
 173       drm_clip_rect_t *b = (drm_clip_rect_t *)imesa->sarea->boxes;
 174
 175       imesa->sarea->nbox = nr - i;
 176
 177       for ( ; i < nr ; i++)
 178          *b++ = pbox[i];
 179
 180       drmCommandNone(imesa->driFd, DRM_I810_SWAP);
 181    }
 182
 183    tmp = GET_ENQUEUE_AGE(imesa);
 184    UNLOCK_HARDWARE( imesa );
 185
 186    /* multiarb will suck the life out of the server without this throttle:
 187     */
 188    if (GET_DISPATCH_AGE(imesa) < imesa->lastSwap) {
 189       i810WaitAge(imesa, imesa->lastSwap);
 190    }
 191
 192    imesa->lastSwap = tmp;
 193    imesa->upload_cliprects = GL_TRUE;
 194 }
 195
 196
 197 /*
 198  * XXX implement when full-screen extension is done.
 199  */
 200 void i810PageFlip( const __DRIdrawable *dPriv )
 201 {
 202   i810ContextPtr imesa;
 203   int tmp, ret;
 204
 205   assert(dPriv);
 206   assert(dPriv->driContextPriv);
 207   assert(dPriv->driContextPriv->driverPrivate);
 208
 209   imesa = (i810ContextPtr) dPriv->driContextPriv->driverPrivate;
 210
 211   I810_FIREVERTICES( imesa );
 212   LOCK_HARDWARE( imesa );
 213
 214   if (dPriv->pClipRects) {
 215      memcpy(&(imesa->sarea->boxes[0]), &(dPriv->pClipRects[0]),
 216             sizeof(drm_clip_rect_t));
 217      imesa->sarea->nbox = 1;
 218   }
 219   ret = drmCommandNone(imesa->driFd, DRM_I810_FLIP);
 220   if (ret) {
 221     fprintf(stderr, "%s: %d\n", __FUNCTION__, ret);
 222     UNLOCK_HARDWARE( imesa );
 223     exit(1);
 224   }
 225
 226   tmp = GET_ENQUEUE_AGE(imesa);
 227   UNLOCK_HARDWARE( imesa );
 228
 229    /* multiarb will suck the life out of the server without this throttle:
 230     */
 231   if (GET_DISPATCH_AGE(imesa) < imesa->lastSwap) {
 232     i810WaitAge(imesa, imesa->lastSwap);
 233    }
 234
 235   /*  i810SetDrawBuffer( imesa->glCtx, imesa->glCtx->Color.DriverDrawBuffer );*/
 236   i810DrawBuffer( imesa->glCtx, imesa->glCtx->Color.DrawBuffer[0] );
 237   imesa->upload_cliprects = GL_TRUE;
 238   imesa->lastSwap = tmp;
 239   return;
 240 }
 241
 242
 243 /* This waits for *everybody* to finish rendering -- overkill.
 244  */
 245 void i810DmaFinish( i810ContextPtr imesa  )
 246 {
 247    I810_FIREVERTICES( imesa );
 248
 249    LOCK_HARDWARE( imesa );
 250    i810RegetLockQuiescent( imesa );
 251    UNLOCK_HARDWARE( imesa );
 252 }
 253
 254
 255 void i810RegetLockQuiescent( i810ContextPtr imesa  )
 256 {
 257    drmUnlock(imesa->driFd, imesa->hHWContext);
 258    i810GetLock( imesa, DRM_LOCK_QUIESCENT );
 259 }
 260
 261 void i810WaitAgeLocked( i810ContextPtr imesa, int age  )
 262 {
 263    int i = 0, j;
 264
 265    while (++i < 5000) {
 266       drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
 267       if (GET_DISPATCH_AGE(imesa) >= age)
 268          return;
 269       for (j = 0 ; j < 1000 ; j++)
 270          ;
 271    }
 272
 273    drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
 274 }
 275
 276
 277 void i810WaitAge( i810ContextPtr imesa, int age  )
 278 {
 279    int i = 0, j;
 280
 281    while (++i < 5000) {
 282       drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
 283       if (GET_DISPATCH_AGE(imesa) >= age)
 284          return;
 285       for (j = 0 ; j < 1000 ; j++)
 286          ;
 287    }
 288
 289    i = 0;
 290    while (++i < 1000) {
 291       drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
 292       if (GET_DISPATCH_AGE(imesa) >= age)
 293          return;
 294       usleep(1000);
 295    }
 296
 297    LOCK_HARDWARE(imesa);
 298    drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
 299    UNLOCK_HARDWARE(imesa);
 300 }
 301
 302
 303
 304
 305 static int intersect_rect( drm_clip_rect_t *out,
 306                            drm_clip_rect_t *a,
 307                            drm_clip_rect_t *b )
 308 {
 309    *out = *a;
 310    if (b->x1 > out->x1) out->x1 = b->x1;
 311    if (b->x2 < out->x2) out->x2 = b->x2;
 312    if (out->x1 >= out->x2) return 0;
 313
 314    if (b->y1 > out->y1) out->y1 = b->y1;
 315    if (b->y2 < out->y2) out->y2 = b->y2;
 316    if (out->y1 >= out->y2) return 0;
 317    return 1;
 318 }
 319
 320
 321 static void emit_state( i810ContextPtr imesa )
 322 {
 323    GLuint dirty = imesa->dirty;
 324    I810SAREAPtr sarea = imesa->sarea;
 325
 326    if (dirty & I810_UPLOAD_BUFFERS) {
 327       memcpy( sarea->BufferState, imesa->BufferSetup,
 328               sizeof(imesa->BufferSetup) );
 329    }
 330
 331    if (dirty & I810_UPLOAD_CTX) {
 332       memcpy( sarea->ContextState, imesa->Setup,
 333               sizeof(imesa->Setup) );
 334    }
 335
 336    if (dirty & I810_UPLOAD_TEX0) {
 337       memcpy(sarea->TexState[0],
 338              imesa->CurrentTexObj[0]->Setup,
 339              sizeof(imesa->CurrentTexObj[0]->Setup));
 340    }
 341
 342    if (dirty & I810_UPLOAD_TEX1) {
 343       GLuint *setup = sarea->TexState[1];
 344
 345       memcpy( setup,
 346               imesa->CurrentTexObj[1]->Setup,
 347               sizeof(imesa->CurrentTexObj[1]->Setup));
 348
 349       /* Need this for the case where both units are bound to the same
 350        * texobj.
 351        */
 352       setup[I810_TEXREG_MI1] ^= (MI1_MAP_0 ^ MI1_MAP_1);
 353       setup[I810_TEXREG_MLC] ^= (MLC_MAP_0 ^ MLC_MAP_1);
 354       setup[I810_TEXREG_MLL] ^= (MLL_MAP_0 ^ MLL_MAP_1);
 355       setup[I810_TEXREG_MCS] ^= (MCS_COORD_0 ^ MCS_COORD_1);
 356       setup[I810_TEXREG_MF]  ^= (MF_MAP_0 ^ MF_MAP_1);
 357    }
 358
 359    sarea->dirty = dirty;
 360    imesa->dirty = 0;
 361 }
 362
 363
 364 static void age_imesa( i810ContextPtr imesa, int age )
 365 {
 366    if (imesa->CurrentTexObj[0]) imesa->CurrentTexObj[0]->base.timestamp = age;
 367    if (imesa->CurrentTexObj[1]) imesa->CurrentTexObj[1]->base.timestamp = age;
 368 }
 369
 370
 371 void i810FlushPrimsLocked( i810ContextPtr imesa )
 372 {
 373    drm_clip_rect_t *pbox = imesa->pClipRects;
 374    int nbox = imesa->numClipRects;
 375    drmBufPtr buffer = imesa->vertex_buffer;
 376    I810SAREAPtr sarea = imesa->sarea;
 377    drmI810Vertex vertex;
 378    int i;
 379
 380    if (I810_DEBUG & DEBUG_STATE)
 381       i810PrintDirty( __FUNCTION__, imesa->dirty );
 382
 383    if (imesa->dirty)
 384       emit_state( imesa );
 385
 386    vertex.idx = buffer->idx;
 387    vertex.used = imesa->vertex_low;
 388    vertex.discard = 0;
 389    sarea->vertex_prim = imesa->hw_primitive;
 390
 391    if (!nbox) {
 392       vertex.used = 0;
 393    }
 394    else if (nbox > I810_NR_SAREA_CLIPRECTS) {
 395       imesa->upload_cliprects = GL_TRUE;
 396    }
 397
 398    if (!nbox || !imesa->upload_cliprects)
 399    {
 400       if (nbox == 1)
 401          sarea->nbox = 0;
 402       else
 403          sarea->nbox = nbox;
 404
 405       vertex.discard = 1;
 406       drmCommandWrite(imesa->driFd, DRM_I810_VERTEX,
 407                       &vertex, sizeof(drmI810Vertex));
 408       age_imesa(imesa, sarea->last_enqueue);
 409    }
 410    else
 411    {
 412       for (i = 0 ; i < nbox ; )
 413       {
 414          int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, nbox);
 415          drm_clip_rect_t *b = (drm_clip_rect_t *)sarea->boxes;
 416
 417          if (imesa->scissor) {
 418             sarea->nbox = 0;
 419
 420             for ( ; i < nr ; i++) {
 421                b->x1 = pbox[i].x1 - imesa->drawX;
 422                b->y1 = pbox[i].y1 - imesa->drawY;
 423                b->x2 = pbox[i].x2 - imesa->drawX;
 424                b->y2 = pbox[i].y2 - imesa->drawY;
 425
 426                if (intersect_rect(b, b, &imesa->scissor_rect)) {
 427                   sarea->nbox++;
 428                   b++;
 429                }
 430             }
 431
 432             /* Culled?
 433              */
 434             if (!sarea->nbox) {
 435                if (nr < nbox) continue;
 436                vertex.used = 0;
 437             }
 438          } else {
 439             sarea->nbox = nr - i;
 440             for ( ; i < nr ; i++, b++) {
 441                b->x1 = pbox[i].x1 - imesa->drawX;
 442                b->y1 = pbox[i].y1 - imesa->drawY;
 443                b->x2 = pbox[i].x2 - imesa->drawX;
 444                b->y2 = pbox[i].y2 - imesa->drawY;
 445             }
 446          }
 447
 448          /* Finished with the buffer?
 449           */
 450          if (nr == nbox)
 451             vertex.discard = 1;
 452
 453          drmCommandWrite(imesa->driFd, DRM_I810_VERTEX,
 454                          &vertex, sizeof(drmI810Vertex));
 455          age_imesa(imesa, imesa->sarea->last_enqueue);
 456       }
 457    }
 458
 459    /* Reset imesa vars:
 460     */
 461    imesa->vertex_buffer = 0;
 462    imesa->vertex_addr = 0;
 463    imesa->vertex_low = 0;
 464    imesa->vertex_high = 0;
 465    imesa->vertex_last_prim = 0;
 466    imesa->dirty = 0;
 467    imesa->upload_cliprects = GL_FALSE;
 468 }
 469
 470 void i810FlushPrimsGetBuffer( i810ContextPtr imesa )
 471 {
 472    LOCK_HARDWARE(imesa);
 473
 474    if (imesa->vertex_buffer)
 475       i810FlushPrimsLocked( imesa );
 476
 477    imesa->vertex_buffer = i810_get_buffer_ioctl( imesa );
 478    imesa->vertex_high = imesa->vertex_buffer->total;
 479    imesa->vertex_addr = (char *)imesa->vertex_buffer->address;
 480    imesa->vertex_low = 4;       /* leave room for instruction header */
 481    imesa->vertex_last_prim = imesa->vertex_low;
 482    UNLOCK_HARDWARE(imesa);
 483 }
 484
 485
 486 void i810FlushPrims( i810ContextPtr imesa )
 487 {
 488    if (imesa->vertex_buffer) {
 489       LOCK_HARDWARE( imesa );
 490       i810FlushPrimsLocked( imesa );
 491       UNLOCK_HARDWARE( imesa );
 492    }
 493 }
 494
 495
 496
 497 int i810_check_copy(int fd)
 498 {
 499    return(drmCommandNone(fd, DRM_I810_DOCOPY));
 500 }
 501
 502 static void i810Flush( struct gl_context *ctx )
 503 {
 504    i810ContextPtr imesa = I810_CONTEXT( ctx );
 505    I810_FIREVERTICES( imesa );
 506 }
 507
 508 static void i810Finish( struct gl_context *ctx  )
 509 {
 510    i810ContextPtr imesa = I810_CONTEXT( ctx );
 511    i810DmaFinish( imesa );
 512 }
 513
 514 void i810InitIoctlFuncs( struct dd_function_table *functions )
 515 {
 516    functions->Flush = i810Flush;
 517    functions->Clear = i810Clear;
 518    functions->Finish = i810Finish;
 519 }