src/gallium/drivers/nouveau/nvc0/nvc0_transfer.c

   1
   2 #include "util/u_format.h"
   3
   4 #include "nvc0/nvc0_context.h"
   5
   6 #include "nv50/nv50_defs.xml.h"
   7
   8 struct nvc0_transfer {
   9    struct pipe_transfer base;
  10    struct nv50_m2mf_rect rect[2];
  11    uint32_t nblocksx;
  12    uint16_t nblocksy;
  13    uint16_t nlayers;
  14 };
  15
  16 static void
  17 nvc0_m2mf_transfer_rect(struct nvc0_context *nvc0,
  18                         const struct nv50_m2mf_rect *dst,
  19                         const struct nv50_m2mf_rect *src,
  20                         uint32_t nblocksx, uint32_t nblocksy)
  21 {
  22    struct nouveau_pushbuf *push = nvc0->base.pushbuf;
  23    struct nouveau_bufctx *bctx = nvc0->bufctx;
  24    const int cpp = dst->cpp;
  25    uint32_t src_ofst = src->base;
  26    uint32_t dst_ofst = dst->base;
  27    uint32_t height = nblocksy;
  28    uint32_t sy = src->y;
  29    uint32_t dy = dst->y;
  30    uint32_t exec = (1 << 20);
  31
  32    assert(dst->cpp == src->cpp);
  33
  34    nouveau_bufctx_refn(bctx, 0, src->bo, src->domain | NOUVEAU_BO_RD);
  35    nouveau_bufctx_refn(bctx, 0, dst->bo, dst->domain | NOUVEAU_BO_WR);
  36    nouveau_pushbuf_bufctx(push, bctx);
  37    nouveau_pushbuf_validate(push);
  38
  39    if (nouveau_bo_memtype(src->bo)) {
  40       BEGIN_NVC0(push, NVC0_M2MF(TILING_MODE_IN), 5);
  41       PUSH_DATA (push, src->tile_mode);
  42       PUSH_DATA (push, src->width * cpp);
  43       PUSH_DATA (push, src->height);
  44       PUSH_DATA (push, src->depth);
  45       PUSH_DATA (push, src->z);
  46    } else {
  47       src_ofst += src->y * src->pitch + src->x * cpp;
  48
  49       BEGIN_NVC0(push, NVC0_M2MF(PITCH_IN), 1);
  50       PUSH_DATA (push, src->width * cpp);
  51
  52       exec |= NVC0_M2MF_EXEC_LINEAR_IN;
  53    }
  54
  55    if (nouveau_bo_memtype(dst->bo)) {
  56       BEGIN_NVC0(push, NVC0_M2MF(TILING_MODE_OUT), 5);
  57       PUSH_DATA (push, dst->tile_mode);
  58       PUSH_DATA (push, dst->width * cpp);
  59       PUSH_DATA (push, dst->height);
  60       PUSH_DATA (push, dst->depth);
  61       PUSH_DATA (push, dst->z);
  62    } else {
  63       dst_ofst += dst->y * dst->pitch + dst->x * cpp;
  64
  65       BEGIN_NVC0(push, NVC0_M2MF(PITCH_OUT), 1);
  66       PUSH_DATA (push, dst->width * cpp);
  67
  68       exec |= NVC0_M2MF_EXEC_LINEAR_OUT;
  69    }
  70
  71    while (height) {
  72       int line_count = height > 2047 ? 2047 : height;
  73
  74       BEGIN_NVC0(push, NVC0_M2MF(OFFSET_IN_HIGH), 2);
  75       PUSH_DATAh(push, src->bo->offset + src_ofst);
  76       PUSH_DATA (push, src->bo->offset + src_ofst);
  77
  78       BEGIN_NVC0(push, NVC0_M2MF(OFFSET_OUT_HIGH), 2);
  79       PUSH_DATAh(push, dst->bo->offset + dst_ofst);
  80       PUSH_DATA (push, dst->bo->offset + dst_ofst);
  81
  82       if (!(exec & NVC0_M2MF_EXEC_LINEAR_IN)) {
  83          BEGIN_NVC0(push, NVC0_M2MF(TILING_POSITION_IN_X), 2);
  84          PUSH_DATA (push, src->x * cpp);
  85          PUSH_DATA (push, sy);
  86       } else {
  87          src_ofst += line_count * src->pitch;
  88       }
  89       if (!(exec & NVC0_M2MF_EXEC_LINEAR_OUT)) {
  90          BEGIN_NVC0(push, NVC0_M2MF(TILING_POSITION_OUT_X), 2);
  91          PUSH_DATA (push, dst->x * cpp);
  92          PUSH_DATA (push, dy);
  93       } else {
  94          dst_ofst += line_count * dst->pitch;
  95       }
  96
  97       BEGIN_NVC0(push, NVC0_M2MF(LINE_LENGTH_IN), 2);
  98       PUSH_DATA (push, nblocksx * cpp);
  99       PUSH_DATA (push, line_count);
 100       BEGIN_NVC0(push, NVC0_M2MF(EXEC), 1);
 101       PUSH_DATA (push, exec);
 102
 103       height -= line_count;
 104       sy += line_count;
 105       dy += line_count;
 106    }
 107
 108    nouveau_bufctx_reset(bctx, 0);
 109 }
 110
 111 static void
 112 nve4_m2mf_transfer_rect(struct nvc0_context *nvc0,
 113                         const struct nv50_m2mf_rect *dst,
 114                         const struct nv50_m2mf_rect *src,
 115                         uint32_t nblocksx, uint32_t nblocksy)
 116 {
 117    struct nouveau_pushbuf *push = nvc0->base.pushbuf;
 118    struct nouveau_bufctx *bctx = nvc0->bufctx;
 119    uint32_t exec;
 120    uint32_t src_base = src->base;
 121    uint32_t dst_base = dst->base;
 122    const int cpp = dst->cpp;
 123
 124    assert(dst->cpp == src->cpp);
 125
 126    nouveau_bufctx_refn(bctx, 0, dst->bo, dst->domain | NOUVEAU_BO_WR);
 127    nouveau_bufctx_refn(bctx, 0, src->bo, src->domain | NOUVEAU_BO_RD);
 128    nouveau_pushbuf_bufctx(push, bctx);
 129    nouveau_pushbuf_validate(push);
 130
 131    exec = 0x200 /* 2D_ENABLE */ | 0x6 /* UNK */;
 132
 133    if (!nouveau_bo_memtype(dst->bo)) {
 134       assert(!dst->z);
 135       dst_base += dst->y * dst->pitch + dst->x * cpp;
 136       exec |= 0x100; /* DST_MODE_2D_LINEAR */
 137    }
 138    if (!nouveau_bo_memtype(src->bo)) {
 139       assert(!src->z);
 140       src_base += src->y * src->pitch + src->x * cpp;
 141       exec |= 0x080; /* SRC_MODE_2D_LINEAR */
 142    }
 143
 144    BEGIN_NVC0(push, SUBC_COPY(0x070c), 6);
 145    PUSH_DATA (push, 0x1000 | dst->tile_mode);
 146    PUSH_DATA (push, dst->pitch);
 147    PUSH_DATA (push, dst->height);
 148    PUSH_DATA (push, dst->depth);
 149    PUSH_DATA (push, dst->z);
 150    PUSH_DATA (push, (dst->y << 16) | (dst->x * cpp));
 151
 152    BEGIN_NVC0(push, SUBC_COPY(0x0728), 6);
 153    PUSH_DATA (push, 0x1000 | src->tile_mode);
 154    PUSH_DATA (push, src->pitch);
 155    PUSH_DATA (push, src->height);
 156    PUSH_DATA (push, src->depth);
 157    PUSH_DATA (push, src->z);
 158    PUSH_DATA (push, (src->y << 16) | (src->x * cpp));
 159
 160    BEGIN_NVC0(push, SUBC_COPY(0x0400), 8);
 161    PUSH_DATAh(push, src->bo->offset + src_base);
 162    PUSH_DATA (push, src->bo->offset + src_base);
 163    PUSH_DATAh(push, dst->bo->offset + dst_base);
 164    PUSH_DATA (push, dst->bo->offset + dst_base);
 165    PUSH_DATA (push, src->pitch);
 166    PUSH_DATA (push, dst->pitch);
 167    PUSH_DATA (push, nblocksx * cpp);
 168    PUSH_DATA (push, nblocksy);
 169
 170    BEGIN_NVC0(push, SUBC_COPY(0x0300), 1);
 171    PUSH_DATA (push, exec);
 172
 173    nouveau_bufctx_reset(bctx, 0);
 174 }
 175
 176 void
 177 nvc0_m2mf_push_linear(struct nouveau_context *nv,
 178                       struct nouveau_bo *dst, unsigned offset, unsigned domain,
 179                       unsigned size, const void *data)
 180 {
 181    struct nvc0_context *nvc0 = nvc0_context(&nv->pipe);
 182    struct nouveau_pushbuf *push = nv->pushbuf;
 183    uint32_t *src = (uint32_t *)data;
 184    unsigned count = (size + 3) / 4;
 185
 186    nouveau_bufctx_refn(nvc0->bufctx, 0, dst, domain | NOUVEAU_BO_WR);
 187    nouveau_pushbuf_bufctx(push, nvc0->bufctx);
 188    nouveau_pushbuf_validate(push);
 189
 190    while (count) {
 191       unsigned nr;
 192
 193       if (!PUSH_SPACE(push, 16))
 194          break;
 195       nr = PUSH_AVAIL(push);
 196       assert(nr >= 16);
 197       nr = MIN2(count, nr - 9);
 198       nr = MIN2(nr, NV04_PFIFO_MAX_PACKET_LEN);
 199
 200       BEGIN_NVC0(push, NVC0_M2MF(OFFSET_OUT_HIGH), 2);
 201       PUSH_DATAh(push, dst->offset + offset);
 202       PUSH_DATA (push, dst->offset + offset);
 203       BEGIN_NVC0(push, NVC0_M2MF(LINE_LENGTH_IN), 2);
 204       PUSH_DATA (push, MIN2(size, nr * 4));
 205       PUSH_DATA (push, 1);
 206       BEGIN_NVC0(push, NVC0_M2MF(EXEC), 1);
 207       PUSH_DATA (push, 0x100111);
 208
 209       /* must not be interrupted (trap on QUERY fence, 0x50 works however) */
 210       BEGIN_NIC0(push, NVC0_M2MF(DATA), nr);
 211       PUSH_DATAp(push, src, nr);
 212
 213       count -= nr;
 214       src += nr;
 215       offset += nr * 4;
 216       size -= nr * 4;
 217    }
 218
 219    nouveau_bufctx_reset(nvc0->bufctx, 0);
 220 }
 221
 222 void
 223 nve4_p2mf_push_linear(struct nouveau_context *nv,
 224                       struct nouveau_bo *dst, unsigned offset, unsigned domain,
 225                       unsigned size, const void *data)
 226 {
 227    struct nvc0_context *nvc0 = nvc0_context(&nv->pipe);
 228    struct nouveau_pushbuf *push = nv->pushbuf;
 229    uint32_t *src = (uint32_t *)data;
 230    unsigned count = (size + 3) / 4;
 231
 232    nouveau_bufctx_refn(nvc0->bufctx, 0, dst, domain | NOUVEAU_BO_WR);
 233    nouveau_pushbuf_bufctx(push, nvc0->bufctx);
 234    nouveau_pushbuf_validate(push);
 235
 236    while (count) {
 237       unsigned nr;
 238
 239       if (!PUSH_SPACE(push, 16))
 240          break;
 241       nr = PUSH_AVAIL(push);
 242       assert(nr >= 16);
 243       nr = MIN2(count, nr - 8);
 244       nr = MIN2(nr, (NV04_PFIFO_MAX_PACKET_LEN - 1));
 245
 246       BEGIN_NVC0(push, NVE4_P2MF(UPLOAD_DST_ADDRESS_HIGH), 2);
 247       PUSH_DATAh(push, dst->offset + offset);
 248       PUSH_DATA (push, dst->offset + offset);
 249       BEGIN_NVC0(push, NVE4_P2MF(UPLOAD_LINE_LENGTH_IN), 2);
 250       PUSH_DATA (push, MIN2(size, nr * 4));
 251       PUSH_DATA (push, 1);
 252       /* must not be interrupted (trap on QUERY fence, 0x50 works however) */
 253       BEGIN_1IC0(push, NVE4_P2MF(UPLOAD_EXEC), nr + 1);
 254       PUSH_DATA (push, 0x1001);
 255       PUSH_DATAp(push, src, nr);
 256
 257       count -= nr;
 258       src += nr;
 259       offset += nr * 4;
 260       size -= nr * 4;
 261    }
 262
 263    nouveau_bufctx_reset(nvc0->bufctx, 0);
 264 }
 265
 266 static void
 267 nvc0_m2mf_copy_linear(struct nouveau_context *nv,
 268                       struct nouveau_bo *dst, unsigned dstoff, unsigned dstdom,
 269                       struct nouveau_bo *src, unsigned srcoff, unsigned srcdom,
 270                       unsigned size)
 271 {
 272    struct nouveau_pushbuf *push = nv->pushbuf;
 273    struct nouveau_bufctx *bctx = nvc0_context(&nv->pipe)->bufctx;
 274
 275    nouveau_bufctx_refn(bctx, 0, src, srcdom | NOUVEAU_BO_RD);
 276    nouveau_bufctx_refn(bctx, 0, dst, dstdom | NOUVEAU_BO_WR);
 277    nouveau_pushbuf_bufctx(push, bctx);
 278    nouveau_pushbuf_validate(push);
 279
 280    while (size) {
 281       unsigned bytes = MIN2(size, 1 << 17);
 282
 283       BEGIN_NVC0(push, NVC0_M2MF(OFFSET_OUT_HIGH), 2);
 284       PUSH_DATAh(push, dst->offset + dstoff);
 285       PUSH_DATA (push, dst->offset + dstoff);
 286       BEGIN_NVC0(push, NVC0_M2MF(OFFSET_IN_HIGH), 2);
 287       PUSH_DATAh(push, src->offset + srcoff);
 288       PUSH_DATA (push, src->offset + srcoff);
 289       BEGIN_NVC0(push, NVC0_M2MF(LINE_LENGTH_IN), 2);
 290       PUSH_DATA (push, bytes);
 291       PUSH_DATA (push, 1);
 292       BEGIN_NVC0(push, NVC0_M2MF(EXEC), 1);
 293       PUSH_DATA (push, NVC0_M2MF_EXEC_QUERY_SHORT |
 294                  NVC0_M2MF_EXEC_LINEAR_IN | NVC0_M2MF_EXEC_LINEAR_OUT);
 295
 296       srcoff += bytes;
 297       dstoff += bytes;
 298       size -= bytes;
 299    }
 300
 301    nouveau_bufctx_reset(bctx, 0);
 302 }
 303
 304 static void
 305 nve4_m2mf_copy_linear(struct nouveau_context *nv,
 306                       struct nouveau_bo *dst, unsigned dstoff, unsigned dstdom,
 307                       struct nouveau_bo *src, unsigned srcoff, unsigned srcdom,
 308                       unsigned size)
 309 {
 310    struct nouveau_pushbuf *push = nv->pushbuf;
 311    struct nouveau_bufctx *bctx = nvc0_context(&nv->pipe)->bufctx;
 312
 313    nouveau_bufctx_refn(bctx, 0, src, srcdom | NOUVEAU_BO_RD);
 314    nouveau_bufctx_refn(bctx, 0, dst, dstdom | NOUVEAU_BO_WR);
 315    nouveau_pushbuf_bufctx(push, bctx);
 316    nouveau_pushbuf_validate(push);
 317
 318    BEGIN_NVC0(push, SUBC_COPY(0x0400), 4);
 319    PUSH_DATAh(push, src->offset + srcoff);
 320    PUSH_DATA (push, src->offset + srcoff);
 321    PUSH_DATAh(push, dst->offset + dstoff);
 322    PUSH_DATA (push, dst->offset + dstoff);
 323    BEGIN_NVC0(push, SUBC_COPY(0x0418), 1);
 324    PUSH_DATA (push, size);
 325    BEGIN_NVC0(push, SUBC_COPY(0x0300), 1);
 326    PUSH_DATA (push, 0x186);
 327
 328    nouveau_bufctx_reset(bctx, 0);
 329 }
 330
 331
 332 static INLINE bool
 333 nvc0_mt_transfer_can_map_directly(struct nv50_miptree *mt)
 334 {
 335    if (mt->base.domain == NOUVEAU_BO_VRAM)
 336       return false;
 337    if (mt->base.base.usage != PIPE_USAGE_STAGING)
 338       return false;
 339    return !nouveau_bo_memtype(mt->base.bo);
 340 }
 341
 342 static INLINE bool
 343 nvc0_mt_sync(struct nvc0_context *nvc0, struct nv50_miptree *mt, unsigned usage)
 344 {
 345    if (!mt->base.mm) {
 346       uint32_t access = (usage & PIPE_TRANSFER_WRITE) ?
 347          NOUVEAU_BO_WR : NOUVEAU_BO_RD;
 348       return !nouveau_bo_wait(mt->base.bo, access, nvc0->base.client);
 349    }
 350    if (usage & PIPE_TRANSFER_WRITE)
 351       return !mt->base.fence || nouveau_fence_wait(mt->base.fence);
 352    return !mt->base.fence_wr || nouveau_fence_wait(mt->base.fence_wr);
 353 }
 354
 355 void *
 356 nvc0_miptree_transfer_map(struct pipe_context *pctx,
 357                           struct pipe_resource *res,
 358                           unsigned level,
 359                           unsigned usage,
 360                           const struct pipe_box *box,
 361                           struct pipe_transfer **ptransfer)
 362 {
 363    struct nvc0_context *nvc0 = nvc0_context(pctx);
 364    struct nouveau_device *dev = nvc0->screen->base.device;
 365    struct nv50_miptree *mt = nv50_miptree(res);
 366    struct nvc0_transfer *tx;
 367    uint32_t size;
 368    int ret;
 369    unsigned flags = 0;
 370
 371    if (nvc0_mt_transfer_can_map_directly(mt)) {
 372       ret = !nvc0_mt_sync(nvc0, mt, usage);
 373       if (!ret)
 374          ret = nouveau_bo_map(mt->base.bo, 0, NULL);
 375       if (ret &&
 376           (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 377          return NULL;
 378       if (!ret)
 379          usage |= PIPE_TRANSFER_MAP_DIRECTLY;
 380    } else
 381    if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 382       return NULL;
 383
 384    tx = CALLOC_STRUCT(nvc0_transfer);
 385    if (!tx)
 386       return NULL;
 387
 388    pipe_resource_reference(&tx->base.resource, res);
 389
 390    tx->base.level = level;
 391    tx->base.usage = usage;
 392    tx->base.box = *box;
 393
 394    if (util_format_is_plain(res->format)) {
 395       tx->nblocksx = box->width << mt->ms_x;
 396       tx->nblocksy = box->height << mt->ms_y;
 397    } else {
 398       tx->nblocksx = util_format_get_nblocksx(res->format, box->width);
 399       tx->nblocksy = util_format_get_nblocksy(res->format, box->height);
 400    }
 401    tx->nlayers = box->depth;
 402
 403    tx->base.stride = tx->nblocksx * util_format_get_blocksize(res->format);
 404    tx->base.layer_stride = tx->nblocksy * tx->base.stride;
 405
 406    if (usage & PIPE_TRANSFER_MAP_DIRECTLY) {
 407       tx->base.stride = align(tx->base.stride, 128);
 408       *ptransfer = &tx->base;
 409       return mt->base.bo->map + mt->base.offset;
 410    }
 411
 412    nv50_m2mf_rect_setup(&tx->rect[0], res, level, box->x, box->y, box->z);
 413
 414    size = tx->base.layer_stride;
 415
 416    ret = nouveau_bo_new(dev, NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0,
 417                         size * tx->nlayers, NULL, &tx->rect[1].bo);
 418    if (ret) {
 419       pipe_resource_reference(&tx->base.resource, NULL);
 420       FREE(tx);
 421       return NULL;
 422    }
 423
 424    tx->rect[1].cpp = tx->rect[0].cpp;
 425    tx->rect[1].width = tx->nblocksx;
 426    tx->rect[1].height = tx->nblocksy;
 427    tx->rect[1].depth = 1;
 428    tx->rect[1].pitch = tx->base.stride;
 429    tx->rect[1].domain = NOUVEAU_BO_GART;
 430
 431    if (usage & PIPE_TRANSFER_READ) {
 432       unsigned base = tx->rect[0].base;
 433       unsigned z = tx->rect[0].z;
 434       unsigned i;
 435       for (i = 0; i < tx->nlayers; ++i) {
 436          nvc0->m2mf_copy_rect(nvc0, &tx->rect[1], &tx->rect[0],
 437                               tx->nblocksx, tx->nblocksy);
 438          if (mt->layout_3d)
 439             tx->rect[0].z++;
 440          else
 441             tx->rect[0].base += mt->layer_stride;
 442          tx->rect[1].base += size;
 443       }
 444       tx->rect[0].z = z;
 445       tx->rect[0].base = base;
 446       tx->rect[1].base = 0;
 447    }
 448
 449    if (tx->rect[1].bo->map) {
 450       *ptransfer = &tx->base;
 451       return tx->rect[1].bo->map;
 452    }
 453
 454    if (usage & PIPE_TRANSFER_READ)
 455       flags = NOUVEAU_BO_RD;
 456    if (usage & PIPE_TRANSFER_WRITE)
 457       flags |= NOUVEAU_BO_WR;
 458
 459    ret = nouveau_bo_map(tx->rect[1].bo, flags, nvc0->screen->base.client);
 460    if (ret) {
 461       pipe_resource_reference(&tx->base.resource, NULL);
 462       nouveau_bo_ref(NULL, &tx->rect[1].bo);
 463       FREE(tx);
 464       return NULL;
 465    }
 466
 467    *ptransfer = &tx->base;
 468    return tx->rect[1].bo->map;
 469 }
 470
 471 void
 472 nvc0_miptree_transfer_unmap(struct pipe_context *pctx,
 473                             struct pipe_transfer *transfer)
 474 {
 475    struct nvc0_context *nvc0 = nvc0_context(pctx);
 476    struct nvc0_transfer *tx = (struct nvc0_transfer *)transfer;
 477    struct nv50_miptree *mt = nv50_miptree(tx->base.resource);
 478    unsigned i;
 479
 480    if (tx->base.usage & PIPE_TRANSFER_MAP_DIRECTLY) {
 481       pipe_resource_reference(&transfer->resource, NULL);
 482
 483       FREE(tx);
 484       return;
 485    }
 486
 487    if (tx->base.usage & PIPE_TRANSFER_WRITE) {
 488       for (i = 0; i < tx->nlayers; ++i) {
 489          nvc0->m2mf_copy_rect(nvc0, &tx->rect[0], &tx->rect[1],
 490                               tx->nblocksx, tx->nblocksy);
 491          if (mt->layout_3d)
 492             tx->rect[0].z++;
 493          else
 494             tx->rect[0].base += mt->layer_stride;
 495          tx->rect[1].base += tx->nblocksy * tx->base.stride;
 496       }
 497       NOUVEAU_DRV_STAT(&nvc0->screen->base, tex_transfers_wr, 1);
 498    }
 499    if (tx->base.usage & PIPE_TRANSFER_READ)
 500       NOUVEAU_DRV_STAT(&nvc0->screen->base, tex_transfers_rd, 1);
 501
 502    nouveau_bo_ref(NULL, &tx->rect[1].bo);
 503    pipe_resource_reference(&transfer->resource, NULL);
 504
 505    FREE(tx);
 506 }
 507
 508 /* This happens rather often with DTD9/st. */
 509 void
 510 nvc0_cb_push(struct nouveau_context *nv,
 511              struct nouveau_bo *bo, unsigned domain,
 512              unsigned base, unsigned size,
 513              unsigned offset, unsigned words, const uint32_t *data)
 514 {
 515    struct nouveau_pushbuf *push = nv->pushbuf;
 516
 517    NOUVEAU_DRV_STAT(nv->screen, constbuf_upload_count, 1);
 518    NOUVEAU_DRV_STAT(nv->screen, constbuf_upload_bytes, words * 4);
 519
 520    assert(!(offset & 3));
 521    size = align(size, 0x100);
 522
 523    BEGIN_NVC0(push, NVC0_3D(CB_SIZE), 3);
 524    PUSH_DATA (push, size);
 525    PUSH_DATAh(push, bo->offset + base);
 526    PUSH_DATA (push, bo->offset + base);
 527
 528    while (words) {
 529       unsigned nr = PUSH_AVAIL(push);
 530       nr = MIN2(nr, words);
 531       nr = MIN2(nr, NV04_PFIFO_MAX_PACKET_LEN - 1);
 532
 533       PUSH_SPACE(push, nr + 2);
 534       PUSH_REFN (push, bo, NOUVEAU_BO_WR | domain);
 535       BEGIN_1IC0(push, NVC0_3D(CB_POS), nr + 1);
 536       PUSH_DATA (push, offset);
 537       PUSH_DATAp(push, data, nr);
 538
 539       words -= nr;
 540       data += nr;
 541       offset += nr * 4;
 542    }
 543 }
 544
 545 void
 546 nvc0_init_transfer_functions(struct nvc0_context *nvc0)
 547 {
 548    if (nvc0->screen->base.class_3d >= NVE4_3D_CLASS) {
 549       nvc0->m2mf_copy_rect = nve4_m2mf_transfer_rect;
 550       nvc0->base.copy_data = nve4_m2mf_copy_linear;
 551       nvc0->base.push_data = nve4_p2mf_push_linear;
 552    } else {
 553       nvc0->m2mf_copy_rect = nvc0_m2mf_transfer_rect;
 554       nvc0->base.copy_data = nvc0_m2mf_copy_linear;
 555       nvc0->base.push_data = nvc0_m2mf_push_linear;
 556    }
 557    nvc0->base.push_cb = nvc0_cb_push;
 558 }