src/gallium/drivers/v3d/v3d_screen.c

   1 /*
   2  * Copyright © 2014-2017 Broadcom
   3  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include "util/os_misc.h"
  26 #include "pipe/p_defines.h"
  27 #include "pipe/p_screen.h"
  28 #include "pipe/p_state.h"
  29
  30 #include "util/u_debug.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_format.h"
  33 #include "util/u_hash_table.h"
  34 #include "util/u_screen.h"
  35 #include "util/u_transfer_helper.h"
  36 #include "util/ralloc.h"
  37
  38 #include <xf86drm.h>
  39 #include "v3d_screen.h"
  40 #include "v3d_context.h"
  41 #include "v3d_resource.h"
  42 #include "compiler/v3d_compiler.h"
  43 #include "drm-uapi/drm_fourcc.h"
  44
  45 static const char *
  46 v3d_screen_get_name(struct pipe_screen *pscreen)
  47 {
  48         struct v3d_screen *screen = v3d_screen(pscreen);
  49
  50         if (!screen->name) {
  51                 screen->name = ralloc_asprintf(screen,
  52                                                "V3D %d.%d",
  53                                                screen->devinfo.ver / 10,
  54                                                screen->devinfo.ver % 10);
  55         }
  56
  57         return screen->name;
  58 }
  59
  60 static const char *
  61 v3d_screen_get_vendor(struct pipe_screen *pscreen)
  62 {
  63         return "Broadcom";
  64 }
  65
  66 static void
  67 v3d_screen_destroy(struct pipe_screen *pscreen)
  68 {
  69         struct v3d_screen *screen = v3d_screen(pscreen);
  70
  71         util_hash_table_destroy(screen->bo_handles);
  72         v3d_bufmgr_destroy(pscreen);
  73         slab_destroy_parent(&screen->transfer_pool);
  74         free(screen->ro);
  75
  76         if (using_v3d_simulator)
  77                 v3d_simulator_destroy(screen);
  78
  79         v3d_compiler_free(screen->compiler);
  80         u_transfer_helper_destroy(pscreen->transfer_helper);
  81
  82         close(screen->fd);
  83         ralloc_free(pscreen);
  84 }
  85
  86 static bool
  87 v3d_has_feature(struct v3d_screen *screen, enum drm_v3d_param feature)
  88 {
  89         struct drm_v3d_get_param p = {
  90                 .param = feature,
  91         };
  92         int ret = v3d_ioctl(screen->fd, DRM_IOCTL_V3D_GET_PARAM, &p);
  93
  94         if (ret != 0)
  95                 return false;
  96
  97         return p.value;
  98 }
  99
 100 static int
 101 v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 102 {
 103         struct v3d_screen *screen = v3d_screen(pscreen);
 104
 105         switch (param) {
 106                 /* Supported features (boolean caps). */
 107         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 108         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 109         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 110         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 111         case PIPE_CAP_NPOT_TEXTURES:
 112         case PIPE_CAP_SHAREABLE_SHADERS:
 113         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 114         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 115         case PIPE_CAP_TEXTURE_SWIZZLE:
 116         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 117         case PIPE_CAP_START_INSTANCE:
 118         case PIPE_CAP_TGSI_INSTANCEID:
 119         case PIPE_CAP_SM3:
 120         case PIPE_CAP_TEXTURE_QUERY_LOD:
 121         case PIPE_CAP_PRIMITIVE_RESTART:
 122         case PIPE_CAP_OCCLUSION_QUERY:
 123         case PIPE_CAP_POINT_SPRITE:
 124         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 125         case PIPE_CAP_COMPUTE:
 126         case PIPE_CAP_DRAW_INDIRECT:
 127         case PIPE_CAP_MULTI_DRAW_INDIRECT:
 128         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 129         case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 130         case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 131         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 132         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 133         case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 134                 return 1;
 135
 136         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 137            return 0;
 138
 139         case PIPE_CAP_GENERATE_MIPMAP:
 140                 return v3d_has_feature(screen, DRM_V3D_PARAM_SUPPORTS_TFU);
 141
 142         case PIPE_CAP_INDEP_BLEND_ENABLE:
 143                 return screen->devinfo.ver >= 40;
 144
 145         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 146                 return 256;
 147
 148         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 149                 if (screen->devinfo.ver < 40)
 150                         return 0;
 151                 return 4;
 152
 153         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 154                 return 4;
 155
 156         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 157                 return 330;
 158
 159         case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 160                 return 140;
 161
 162         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 163                 return 1;
 164         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 165                 return 0;
 166         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 167                 if (screen->devinfo.ver >= 40)
 168                         return 0;
 169                 else
 170                         return 1;
 171         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 172                 if (screen->devinfo.ver >= 40)
 173                         return 1;
 174                 else
 175                         return 0;
 176
 177         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 178         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 179         case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 180                 return 1;
 181
 182         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 183                 return 4;
 184
 185         case PIPE_CAP_MAX_VARYINGS:
 186                 return V3D_MAX_FS_INPUTS / 4;
 187
 188                 /* Texturing. */
 189         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 190         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 191         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 192                 return V3D_MAX_MIP_LEVELS;
 193         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 194                 return 2048;
 195
 196                 /* Render targets. */
 197         case PIPE_CAP_MAX_RENDER_TARGETS:
 198                 return 4;
 199
 200         case PIPE_CAP_VENDOR_ID:
 201                 return 0x14E4;
 202         case PIPE_CAP_ACCELERATED:
 203                 return 1;
 204         case PIPE_CAP_VIDEO_MEMORY: {
 205                 uint64_t system_memory;
 206
 207                 if (!os_get_total_physical_memory(&system_memory))
 208                         return 0;
 209
 210                 return (int)(system_memory >> 20);
 211         }
 212         case PIPE_CAP_UMA:
 213                 return 1;
 214
 215         default:
 216                 return u_pipe_screen_get_param_defaults(pscreen, param);
 217         }
 218 }
 219
 220 static float
 221 v3d_screen_get_paramf(struct pipe_screen *pscreen, enum pipe_capf param)
 222 {
 223         switch (param) {
 224         case PIPE_CAPF_MAX_LINE_WIDTH:
 225         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 226                 return 32;
 227
 228         case PIPE_CAPF_MAX_POINT_WIDTH:
 229         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 230                 return 512.0f;
 231
 232         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 233                 return 0.0f;
 234         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 235                 return 16.0f;
 236
 237         case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 238         case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 239         case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 240                 return 0.0f;
 241         default:
 242                 fprintf(stderr, "unknown paramf %d\n", param);
 243                 return 0;
 244         }
 245 }
 246
 247 static int
 248 v3d_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
 249                            enum pipe_shader_cap param)
 250 {
 251         struct v3d_screen *screen = v3d_screen(pscreen);
 252
 253         if (shader != PIPE_SHADER_VERTEX &&
 254             shader != PIPE_SHADER_FRAGMENT) {
 255                 return 0;
 256         }
 257
 258         /* this is probably not totally correct.. but it's a start: */
 259         switch (param) {
 260         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 261         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 262         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 263         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 264                 return 16384;
 265
 266         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 267                 return UINT_MAX;
 268
 269         case PIPE_SHADER_CAP_MAX_INPUTS:
 270                 if (shader == PIPE_SHADER_FRAGMENT)
 271                         return V3D_MAX_FS_INPUTS / 4;
 272                 else
 273                         return V3D_MAX_VS_INPUTS / 4;
 274         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 275                 if (shader == PIPE_SHADER_FRAGMENT)
 276                         return 4;
 277                 else
 278                         return V3D_MAX_FS_INPUTS / 4;
 279         case PIPE_SHADER_CAP_MAX_TEMPS:
 280                 return 256; /* GL_MAX_PROGRAM_TEMPORARIES_ARB */
 281         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 282                 return 16 * 1024 * sizeof(float);
 283         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 284                 return 16;
 285         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 286                 return 0;
 287         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 288         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 289         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 290                 return 0;
 291         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 292                 return 1;
 293         case PIPE_SHADER_CAP_SUBROUTINES:
 294                 return 0;
 295         case PIPE_SHADER_CAP_INTEGERS:
 296                 return 1;
 297         case PIPE_SHADER_CAP_FP16:
 298         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 299         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 300         case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
 301         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 302         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 303         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 304         case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
 305         case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
 306                 return 0;
 307         case PIPE_SHADER_CAP_SCALAR_ISA:
 308                 return 1;
 309         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 310         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 311                 return V3D_MAX_TEXTURE_SAMPLERS;
 312
 313         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 314                 return PIPE_MAX_SHADER_BUFFERS;
 315
 316         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 317                 if (screen->devinfo.ver < 41)
 318                         return 0;
 319                 else
 320                         return PIPE_MAX_SHADER_IMAGES;
 321
 322         case PIPE_SHADER_CAP_PREFERRED_IR:
 323                 return PIPE_SHADER_IR_NIR;
 324         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 325                 return 0;
 326         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 327                 return 32;
 328         case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 329         case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 330                 return 0;
 331         default:
 332                 fprintf(stderr, "unknown shader param %d\n", param);
 333                 return 0;
 334         }
 335         return 0;
 336 }
 337
 338 static boolean
 339 v3d_screen_is_format_supported(struct pipe_screen *pscreen,
 340                                enum pipe_format format,
 341                                enum pipe_texture_target target,
 342                                unsigned sample_count,
 343                                unsigned storage_sample_count,
 344                                unsigned usage)
 345 {
 346         struct v3d_screen *screen = v3d_screen(pscreen);
 347
 348         if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 349                 return false;
 350
 351         if (sample_count > 1 && sample_count != V3D_MAX_SAMPLES)
 352                 return FALSE;
 353
 354         if (target >= PIPE_MAX_TEXTURE_TYPES) {
 355                 return FALSE;
 356         }
 357
 358         if (usage & PIPE_BIND_VERTEX_BUFFER) {
 359                 switch (format) {
 360                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 361                 case PIPE_FORMAT_R32G32B32_FLOAT:
 362                 case PIPE_FORMAT_R32G32_FLOAT:
 363                 case PIPE_FORMAT_R32_FLOAT:
 364                 case PIPE_FORMAT_R32G32B32A32_SNORM:
 365                 case PIPE_FORMAT_R32G32B32_SNORM:
 366                 case PIPE_FORMAT_R32G32_SNORM:
 367                 case PIPE_FORMAT_R32_SNORM:
 368                 case PIPE_FORMAT_R32G32B32A32_SSCALED:
 369                 case PIPE_FORMAT_R32G32B32_SSCALED:
 370                 case PIPE_FORMAT_R32G32_SSCALED:
 371                 case PIPE_FORMAT_R32_SSCALED:
 372                 case PIPE_FORMAT_R16G16B16A16_UNORM:
 373                 case PIPE_FORMAT_R16G16B16_UNORM:
 374                 case PIPE_FORMAT_R16G16_UNORM:
 375                 case PIPE_FORMAT_R16_UNORM:
 376                 case PIPE_FORMAT_R16G16B16A16_SNORM:
 377                 case PIPE_FORMAT_R16G16B16_SNORM:
 378                 case PIPE_FORMAT_R16G16_SNORM:
 379                 case PIPE_FORMAT_R16_SNORM:
 380                 case PIPE_FORMAT_R16G16B16A16_USCALED:
 381                 case PIPE_FORMAT_R16G16B16_USCALED:
 382                 case PIPE_FORMAT_R16G16_USCALED:
 383                 case PIPE_FORMAT_R16_USCALED:
 384                 case PIPE_FORMAT_R16G16B16A16_SSCALED:
 385                 case PIPE_FORMAT_R16G16B16_SSCALED:
 386                 case PIPE_FORMAT_R16G16_SSCALED:
 387                 case PIPE_FORMAT_R16_SSCALED:
 388                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 389                 case PIPE_FORMAT_R8G8B8_UNORM:
 390                 case PIPE_FORMAT_R8G8_UNORM:
 391                 case PIPE_FORMAT_R8_UNORM:
 392                 case PIPE_FORMAT_R8G8B8A8_SNORM:
 393                 case PIPE_FORMAT_R8G8B8_SNORM:
 394                 case PIPE_FORMAT_R8G8_SNORM:
 395                 case PIPE_FORMAT_R8_SNORM:
 396                 case PIPE_FORMAT_R8G8B8A8_USCALED:
 397                 case PIPE_FORMAT_R8G8B8_USCALED:
 398                 case PIPE_FORMAT_R8G8_USCALED:
 399                 case PIPE_FORMAT_R8_USCALED:
 400                 case PIPE_FORMAT_R8G8B8A8_SSCALED:
 401                 case PIPE_FORMAT_R8G8B8_SSCALED:
 402                 case PIPE_FORMAT_R8G8_SSCALED:
 403                 case PIPE_FORMAT_R8_SSCALED:
 404                 case PIPE_FORMAT_R10G10B10A2_UNORM:
 405                 case PIPE_FORMAT_B10G10R10A2_UNORM:
 406                 case PIPE_FORMAT_R10G10B10A2_SNORM:
 407                 case PIPE_FORMAT_B10G10R10A2_SNORM:
 408                 case PIPE_FORMAT_R10G10B10A2_USCALED:
 409                 case PIPE_FORMAT_B10G10R10A2_USCALED:
 410                 case PIPE_FORMAT_R10G10B10A2_SSCALED:
 411                 case PIPE_FORMAT_B10G10R10A2_SSCALED:
 412                         break;
 413                 default:
 414                         return FALSE;
 415                 }
 416         }
 417
 418         /* FORMAT_NONE gets allowed for ARB_framebuffer_no_attachments's probe
 419          * of FRAMEBUFFER_MAX_SAMPLES
 420          */
 421         if ((usage & PIPE_BIND_RENDER_TARGET) &&
 422             format != PIPE_FORMAT_NONE &&
 423             !v3d_rt_format_supported(&screen->devinfo, format)) {
 424                 return FALSE;
 425         }
 426
 427         if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 428             !v3d_tex_format_supported(&screen->devinfo, format)) {
 429                 return FALSE;
 430         }
 431
 432         if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
 433             !(format == PIPE_FORMAT_S8_UINT_Z24_UNORM ||
 434               format == PIPE_FORMAT_X8Z24_UNORM ||
 435               format == PIPE_FORMAT_Z16_UNORM ||
 436               format == PIPE_FORMAT_Z32_FLOAT ||
 437               format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT)) {
 438                 return FALSE;
 439         }
 440
 441         if ((usage & PIPE_BIND_INDEX_BUFFER) &&
 442             !(format == PIPE_FORMAT_I8_UINT ||
 443               format == PIPE_FORMAT_I16_UINT ||
 444               format == PIPE_FORMAT_I32_UINT)) {
 445                 return FALSE;
 446         }
 447
 448         return TRUE;
 449 }
 450
 451 #define PTR_TO_UINT(x) ((unsigned)((intptr_t)(x)))
 452
 453 static unsigned handle_hash(void *key)
 454 {
 455     return PTR_TO_UINT(key);
 456 }
 457
 458 static int handle_compare(void *key1, void *key2)
 459 {
 460     return PTR_TO_UINT(key1) != PTR_TO_UINT(key2);
 461 }
 462
 463 static bool
 464 v3d_get_device_info(struct v3d_screen *screen)
 465 {
 466         struct drm_v3d_get_param ident0 = {
 467                 .param = DRM_V3D_PARAM_V3D_CORE0_IDENT0,
 468         };
 469         struct drm_v3d_get_param ident1 = {
 470                 .param = DRM_V3D_PARAM_V3D_CORE0_IDENT1,
 471         };
 472         int ret;
 473
 474         ret = v3d_ioctl(screen->fd, DRM_IOCTL_V3D_GET_PARAM, &ident0);
 475         if (ret != 0) {
 476                 fprintf(stderr, "Couldn't get V3D core IDENT0: %s\n",
 477                         strerror(errno));
 478                 return false;
 479         }
 480         ret = v3d_ioctl(screen->fd, DRM_IOCTL_V3D_GET_PARAM, &ident1);
 481         if (ret != 0) {
 482                 fprintf(stderr, "Couldn't get V3D core IDENT1: %s\n",
 483                         strerror(errno));
 484                 return false;
 485         }
 486
 487         uint32_t major = (ident0.value >> 24) & 0xff;
 488         uint32_t minor = (ident1.value >> 0) & 0xf;
 489         screen->devinfo.ver = major * 10 + minor;
 490
 491         screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 8192;
 492
 493         switch (screen->devinfo.ver) {
 494         case 33:
 495         case 41:
 496         case 42:
 497                 break;
 498         default:
 499                 fprintf(stderr,
 500                         "V3D %d.%d not supported by this version of Mesa.\n",
 501                         screen->devinfo.ver / 10,
 502                         screen->devinfo.ver % 10);
 503                 return false;
 504         }
 505
 506         return true;
 507 }
 508
 509 static const void *
 510 v3d_screen_get_compiler_options(struct pipe_screen *pscreen,
 511                                 enum pipe_shader_ir ir, unsigned shader)
 512 {
 513         return &v3d_nir_options;
 514 }
 515
 516 static void
 517 v3d_screen_query_dmabuf_modifiers(struct pipe_screen *pscreen,
 518                                   enum pipe_format format, int max,
 519                                   uint64_t *modifiers,
 520                                   unsigned int *external_only,
 521                                   int *count)
 522 {
 523         int i;
 524         uint64_t available_modifiers[] = {
 525                 DRM_FORMAT_MOD_BROADCOM_UIF,
 526                 DRM_FORMAT_MOD_LINEAR,
 527         };
 528         int num_modifiers = ARRAY_SIZE(available_modifiers);
 529
 530         if (!modifiers) {
 531                 *count = num_modifiers;
 532                 return;
 533         }
 534
 535         *count = MIN2(max, num_modifiers);
 536         for (i = 0; i < *count; i++) {
 537                 modifiers[i] = available_modifiers[i];
 538                 if (external_only)
 539                         external_only[i] = false;
 540        }
 541 }
 542
 543 struct pipe_screen *
 544 v3d_screen_create(int fd, struct renderonly *ro)
 545 {
 546         struct v3d_screen *screen = rzalloc(NULL, struct v3d_screen);
 547         struct pipe_screen *pscreen;
 548
 549         pscreen = &screen->base;
 550
 551         pscreen->destroy = v3d_screen_destroy;
 552         pscreen->get_param = v3d_screen_get_param;
 553         pscreen->get_paramf = v3d_screen_get_paramf;
 554         pscreen->get_shader_param = v3d_screen_get_shader_param;
 555         pscreen->context_create = v3d_context_create;
 556         pscreen->is_format_supported = v3d_screen_is_format_supported;
 557
 558         screen->fd = fd;
 559         if (ro) {
 560                 screen->ro = renderonly_dup(ro);
 561                 if (!screen->ro) {
 562                         fprintf(stderr, "Failed to dup renderonly object\n");
 563                         ralloc_free(screen);
 564                         return NULL;
 565                 }
 566         }
 567         list_inithead(&screen->bo_cache.time_list);
 568         (void)mtx_init(&screen->bo_handles_mutex, mtx_plain);
 569         screen->bo_handles = util_hash_table_create(handle_hash, handle_compare);
 570
 571 #if defined(USE_V3D_SIMULATOR)
 572         v3d_simulator_init(screen);
 573 #endif
 574
 575         if (!v3d_get_device_info(screen))
 576                 goto fail;
 577
 578         slab_create_parent(&screen->transfer_pool, sizeof(struct v3d_transfer), 16);
 579
 580         v3d_fence_init(screen);
 581
 582         v3d_process_debug_variable();
 583
 584         v3d_resource_screen_init(pscreen);
 585
 586         screen->compiler = v3d_compiler_init(&screen->devinfo);
 587
 588         pscreen->get_name = v3d_screen_get_name;
 589         pscreen->get_vendor = v3d_screen_get_vendor;
 590         pscreen->get_device_vendor = v3d_screen_get_vendor;
 591         pscreen->get_compiler_options = v3d_screen_get_compiler_options;
 592         pscreen->query_dmabuf_modifiers = v3d_screen_query_dmabuf_modifiers;
 593
 594         return pscreen;
 595
 596 fail:
 597         close(fd);
 598         ralloc_free(pscreen);
 599         return NULL;
 600 }