src/gallium/drivers/r600/r600_pipe.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include "r600_pipe.h"
  24 #include "r600_public.h"
  25 #include "r600_isa.h"
  26 #include "evergreen_compute.h"
  27 #include "r600d.h"
  28
  29 #include "sb/sb_public.h"
  30
  31 #include <errno.h>
  32 #include "pipe/p_shader_tokens.h"
  33 #include "util/u_debug.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_simple_shaders.h"
  36 #include "util/u_upload_mgr.h"
  37 #include "util/u_math.h"
  38 #include "vl/vl_decoder.h"
  39 #include "vl/vl_video_buffer.h"
  40 #include "radeon/radeon_video.h"
  41 #include "radeon/radeon_uvd.h"
  42 #include "os/os_time.h"
  43
  44 static const struct debug_named_value r600_debug_options[] = {
  45         /* features */
  46         { "nocpdma", DBG_NO_CP_DMA, "Disable CP DMA" },
  47
  48         /* shader backend */
  49         { "nosb", DBG_NO_SB, "Disable sb backend for graphics shaders" },
  50         { "sbcl", DBG_SB_CS, "Enable sb backend for compute shaders" },
  51         { "sbdry", DBG_SB_DRY_RUN, "Don't use optimized bytecode (just print the dumps)" },
  52         { "sbstat", DBG_SB_STAT, "Print optimization statistics for shaders" },
  53         { "sbdump", DBG_SB_DUMP, "Print IR dumps after some optimization passes" },
  54         { "sbnofallback", DBG_SB_NO_FALLBACK, "Abort on errors instead of fallback" },
  55         { "sbdisasm", DBG_SB_DISASM, "Use sb disassembler for shader dumps" },
  56         { "sbsafemath", DBG_SB_SAFEMATH, "Disable unsafe math optimizations" },
  57
  58         DEBUG_NAMED_VALUE_END /* must be last */
  59 };
  60
  61 /*
  62  * pipe_context
  63  */
  64
  65 static void r600_destroy_context(struct pipe_context *context)
  66 {
  67         struct r600_context *rctx = (struct r600_context *)context;
  68         unsigned sh;
  69
  70         r600_isa_destroy(rctx->isa);
  71
  72         r600_sb_context_destroy(rctx->sb_context);
  73
  74         r600_resource_reference(&rctx->dummy_cmask, NULL);
  75         r600_resource_reference(&rctx->dummy_fmask, NULL);
  76
  77         for (sh = 0; sh < PIPE_SHADER_TYPES; sh++) {
  78                 rctx->b.b.set_constant_buffer(&rctx->b.b, sh, R600_BUFFER_INFO_CONST_BUFFER, NULL);
  79                 free(rctx->driver_consts[sh].constants);
  80         }
  81
  82         if (rctx->fixed_func_tcs_shader)
  83                 rctx->b.b.delete_tcs_state(&rctx->b.b, rctx->fixed_func_tcs_shader);
  84
  85         if (rctx->dummy_pixel_shader) {
  86                 rctx->b.b.delete_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
  87         }
  88         if (rctx->custom_dsa_flush) {
  89                 rctx->b.b.delete_depth_stencil_alpha_state(&rctx->b.b, rctx->custom_dsa_flush);
  90         }
  91         if (rctx->custom_blend_resolve) {
  92                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_resolve);
  93         }
  94         if (rctx->custom_blend_decompress) {
  95                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_decompress);
  96         }
  97         if (rctx->custom_blend_fastclear) {
  98                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_fastclear);
  99         }
 100         util_unreference_framebuffer_state(&rctx->framebuffer.state);
 101
 102         if (rctx->blitter) {
 103                 util_blitter_destroy(rctx->blitter);
 104         }
 105         if (rctx->allocator_fetch_shader) {
 106                 u_suballocator_destroy(rctx->allocator_fetch_shader);
 107         }
 108
 109         r600_release_command_buffer(&rctx->start_cs_cmd);
 110
 111         FREE(rctx->start_compute_cs_cmd.buf);
 112
 113         r600_common_context_cleanup(&rctx->b);
 114         FREE(rctx);
 115 }
 116
 117 static struct pipe_context *r600_create_context(struct pipe_screen *screen,
 118                                                 void *priv, unsigned flags)
 119 {
 120         struct r600_context *rctx = CALLOC_STRUCT(r600_context);
 121         struct r600_screen* rscreen = (struct r600_screen *)screen;
 122         struct radeon_winsys *ws = rscreen->b.ws;
 123
 124         if (!rctx)
 125                 return NULL;
 126
 127         rctx->b.b.screen = screen;
 128         rctx->b.b.priv = priv;
 129         rctx->b.b.destroy = r600_destroy_context;
 130         rctx->b.set_atom_dirty = (void *)r600_set_atom_dirty;
 131
 132         if (!r600_common_context_init(&rctx->b, &rscreen->b, flags))
 133                 goto fail;
 134
 135         rctx->screen = rscreen;
 136         LIST_INITHEAD(&rctx->texture_buffers);
 137
 138         r600_init_blit_functions(rctx);
 139
 140         if (rscreen->b.info.has_uvd) {
 141                 rctx->b.b.create_video_codec = r600_uvd_create_decoder;
 142                 rctx->b.b.create_video_buffer = r600_video_buffer_create;
 143         } else {
 144                 rctx->b.b.create_video_codec = vl_create_decoder;
 145                 rctx->b.b.create_video_buffer = vl_video_buffer_create;
 146         }
 147
 148         r600_init_common_state_functions(rctx);
 149
 150         switch (rctx->b.chip_class) {
 151         case R600:
 152         case R700:
 153                 r600_init_state_functions(rctx);
 154                 r600_init_atom_start_cs(rctx);
 155                 rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
 156                 rctx->custom_blend_resolve = rctx->b.chip_class == R700 ? r700_create_resolve_blend(rctx)
 157                                                                       : r600_create_resolve_blend(rctx);
 158                 rctx->custom_blend_decompress = r600_create_decompress_blend(rctx);
 159                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_RV610 ||
 160                                            rctx->b.family == CHIP_RV620 ||
 161                                            rctx->b.family == CHIP_RS780 ||
 162                                            rctx->b.family == CHIP_RS880 ||
 163                                            rctx->b.family == CHIP_RV710);
 164                 break;
 165         case EVERGREEN:
 166         case CAYMAN:
 167                 evergreen_init_state_functions(rctx);
 168                 evergreen_init_atom_start_cs(rctx);
 169                 evergreen_init_atom_start_compute_cs(rctx);
 170                 rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 171                 rctx->custom_blend_resolve = evergreen_create_resolve_blend(rctx);
 172                 rctx->custom_blend_decompress = evergreen_create_decompress_blend(rctx);
 173                 rctx->custom_blend_fastclear = evergreen_create_fastclear_blend(rctx);
 174                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_CEDAR ||
 175                                            rctx->b.family == CHIP_PALM ||
 176                                            rctx->b.family == CHIP_SUMO ||
 177                                            rctx->b.family == CHIP_SUMO2 ||
 178                                            rctx->b.family == CHIP_CAICOS ||
 179                                            rctx->b.family == CHIP_CAYMAN ||
 180                                            rctx->b.family == CHIP_ARUBA);
 181                 break;
 182         default:
 183                 R600_ERR("Unsupported chip class %d.\n", rctx->b.chip_class);
 184                 goto fail;
 185         }
 186
 187         rctx->b.gfx.cs = ws->cs_create(rctx->b.ctx, RING_GFX,
 188                                        r600_context_gfx_flush, rctx);
 189         rctx->b.gfx.flush = r600_context_gfx_flush;
 190
 191         rctx->allocator_fetch_shader =
 192                 u_suballocator_create(&rctx->b.b, 64 * 1024,
 193                                       0, PIPE_USAGE_DEFAULT, 0, FALSE);
 194         if (!rctx->allocator_fetch_shader)
 195                 goto fail;
 196
 197         rctx->isa = calloc(1, sizeof(struct r600_isa));
 198         if (!rctx->isa || r600_isa_init(rctx, rctx->isa))
 199                 goto fail;
 200
 201         if (rscreen->b.debug_flags & DBG_FORCE_DMA)
 202                 rctx->b.b.resource_copy_region = rctx->b.dma_copy;
 203
 204         rctx->blitter = util_blitter_create(&rctx->b.b);
 205         if (rctx->blitter == NULL)
 206                 goto fail;
 207         util_blitter_set_texture_multisample(rctx->blitter, rscreen->has_msaa);
 208         rctx->blitter->draw_rectangle = r600_draw_rectangle;
 209
 210         r600_begin_new_cs(rctx);
 211
 212         rctx->dummy_pixel_shader =
 213                 util_make_fragment_cloneinput_shader(&rctx->b.b, 0,
 214                                                      TGSI_SEMANTIC_GENERIC,
 215                                                      TGSI_INTERPOLATE_CONSTANT);
 216         rctx->b.b.bind_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
 217
 218         return &rctx->b.b;
 219
 220 fail:
 221         r600_destroy_context(&rctx->b.b);
 222         return NULL;
 223 }
 224
 225 /*
 226  * pipe_screen
 227  */
 228
 229 static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 230 {
 231         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 232         enum radeon_family family = rscreen->b.family;
 233
 234         switch (param) {
 235         /* Supported features (boolean caps). */
 236         case PIPE_CAP_NPOT_TEXTURES:
 237         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 238         case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 239         case PIPE_CAP_TWO_SIDED_STENCIL:
 240         case PIPE_CAP_ANISOTROPIC_FILTER:
 241         case PIPE_CAP_POINT_SPRITE:
 242         case PIPE_CAP_OCCLUSION_QUERY:
 243         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 244         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 245         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 246         case PIPE_CAP_TEXTURE_SWIZZLE:
 247         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 248         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 249         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 250         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 251         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 252         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 253         case PIPE_CAP_SM3:
 254         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 255         case PIPE_CAP_PRIMITIVE_RESTART:
 256         case PIPE_CAP_CONDITIONAL_RENDER:
 257         case PIPE_CAP_TEXTURE_BARRIER:
 258         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 259         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 260         case PIPE_CAP_TGSI_INSTANCEID:
 261         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 262         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 263         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 264         case PIPE_CAP_USER_INDEX_BUFFERS:
 265         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 266         case PIPE_CAP_START_INSTANCE:
 267         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 268         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 269         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 270         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 271         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 272         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 273         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 274         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 275         case PIPE_CAP_SAMPLE_SHADING:
 276         case PIPE_CAP_CLIP_HALFZ:
 277         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 278         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 279         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 280         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 281         case PIPE_CAP_TGSI_TXQS:
 282         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 283         case PIPE_CAP_INVALIDATE_BUFFER:
 284         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 285         case PIPE_CAP_QUERY_MEMORY_INFO:
 286         case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 287         case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 288         case PIPE_CAP_CLEAR_TEXTURE:
 289         case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 290                 return 1;
 291
 292         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 293                 return rscreen->b.info.drm_major == 2 && rscreen->b.info.drm_minor >= 43;
 294
 295         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 296                 return !R600_BIG_ENDIAN && rscreen->b.info.has_userptr;
 297
 298         case PIPE_CAP_COMPUTE:
 299                 return rscreen->b.chip_class > R700;
 300
 301         case PIPE_CAP_TGSI_TEXCOORD:
 302                 return 0;
 303
 304         case PIPE_CAP_FAKE_SW_MSAA:
 305                 return 0;
 306
 307         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 308                 return MIN2(rscreen->b.info.max_alloc_size, INT_MAX);
 309
 310         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 311                 return R600_MAP_BUFFER_ALIGNMENT;
 312
 313         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 314                 return 256;
 315
 316         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 317                 return 1;
 318
 319         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 320                 if (family >= CHIP_CEDAR)
 321                    return 410;
 322                 /* pre-evergreen geom shaders need newer kernel */
 323                 if (rscreen->b.info.drm_minor >= 37)
 324                    return 330;
 325                 return 140;
 326
 327         /* Supported except the original R600. */
 328         case PIPE_CAP_INDEP_BLEND_ENABLE:
 329         case PIPE_CAP_INDEP_BLEND_FUNC:
 330                 /* R600 doesn't support per-MRT blends */
 331                 return family == CHIP_R600 ? 0 : 1;
 332
 333         /* Supported on Evergreen. */
 334         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 335         case PIPE_CAP_CUBE_MAP_ARRAY:
 336         case PIPE_CAP_TEXTURE_GATHER_SM5:
 337         case PIPE_CAP_TEXTURE_QUERY_LOD:
 338         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 339         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 340         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 341                 return family >= CHIP_CEDAR ? 1 : 0;
 342         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 343                 return family >= CHIP_CEDAR ? 4 : 0;
 344         case PIPE_CAP_DRAW_INDIRECT:
 345                 /* kernel command checker support is also required */
 346                 return family >= CHIP_CEDAR && rscreen->b.info.drm_minor >= 41;
 347
 348         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 349                 return family >= CHIP_CEDAR ? 0 : 1;
 350
 351         /* Unsupported features. */
 352         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 353         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 354         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 355         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 356         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 357         case PIPE_CAP_USER_VERTEX_BUFFERS:
 358         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 359         case PIPE_CAP_VERTEXID_NOBASE:
 360         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 361         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 362         case PIPE_CAP_SHAREABLE_SHADERS:
 363         case PIPE_CAP_DRAW_PARAMETERS:
 364         case PIPE_CAP_MULTI_DRAW_INDIRECT:
 365         case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 366         case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 367         case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 368         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 369         case PIPE_CAP_GENERATE_MIPMAP:
 370         case PIPE_CAP_STRING_MARKER:
 371         case PIPE_CAP_QUERY_BUFFER_OBJECT:
 372         case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 373         case PIPE_CAP_CULL_DISTANCE:
 374         case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 375         case PIPE_CAP_TGSI_VOTE:
 376         case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 377         case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 378         case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 379         case PIPE_CAP_NATIVE_FENCE_FD:
 380         case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 381         case PIPE_CAP_TGSI_FS_FBFETCH:
 382         case PIPE_CAP_INT64:
 383         case PIPE_CAP_INT64_DIVMOD:
 384                 return 0;
 385
 386         case PIPE_CAP_DOUBLES:
 387                 if (rscreen->b.family == CHIP_ARUBA ||
 388                     rscreen->b.family == CHIP_CAYMAN ||
 389                     rscreen->b.family == CHIP_CYPRESS ||
 390                     rscreen->b.family == CHIP_HEMLOCK)
 391                         return 1;
 392                 return 0;
 393
 394         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 395                 if (family >= CHIP_CEDAR)
 396                         return 30;
 397                 else
 398                         return 0;
 399         /* Stream output. */
 400         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 401                 return rscreen->b.has_streamout ? 4 : 0;
 402         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 403         case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 404                 return rscreen->b.has_streamout ? 1 : 0;
 405         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 406         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 407                 return 32*4;
 408
 409         /* Geometry shader output. */
 410         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 411                 return 1024;
 412         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 413                 return 16384;
 414         case PIPE_CAP_MAX_VERTEX_STREAMS:
 415                 return family >= CHIP_CEDAR ? 4 : 1;
 416
 417         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 418                 return 2047;
 419
 420         /* Texturing. */
 421         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 422         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 423                 if (family >= CHIP_CEDAR)
 424                         return 15;
 425                 else
 426                         return 14;
 427         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 428                 /* textures support 8192, but layered rendering supports 2048 */
 429                 return 12;
 430         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 431                 /* textures support 8192, but layered rendering supports 2048 */
 432                 return 2048;
 433
 434         /* Render targets. */
 435         case PIPE_CAP_MAX_RENDER_TARGETS:
 436                 /* XXX some r6xx are buggy and can only do 4 */
 437                 return 8;
 438
 439         case PIPE_CAP_MAX_VIEWPORTS:
 440                 return R600_MAX_VIEWPORTS;
 441         case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 442                 return 8;
 443
 444         /* Timer queries, present when the clock frequency is non zero. */
 445         case PIPE_CAP_QUERY_TIME_ELAPSED:
 446                 return rscreen->b.info.clock_crystal_freq != 0;
 447         case PIPE_CAP_QUERY_TIMESTAMP:
 448                 return rscreen->b.info.drm_minor >= 20 &&
 449                        rscreen->b.info.clock_crystal_freq != 0;
 450
 451         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 452         case PIPE_CAP_MIN_TEXEL_OFFSET:
 453                 return -8;
 454
 455         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 456         case PIPE_CAP_MAX_TEXEL_OFFSET:
 457                 return 7;
 458
 459         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 460                 return PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600;
 461         case PIPE_CAP_ENDIANNESS:
 462                 return PIPE_ENDIAN_LITTLE;
 463
 464         case PIPE_CAP_VENDOR_ID:
 465                 return ATI_VENDOR_ID;
 466         case PIPE_CAP_DEVICE_ID:
 467                 return rscreen->b.info.pci_id;
 468         case PIPE_CAP_ACCELERATED:
 469                 return 1;
 470         case PIPE_CAP_VIDEO_MEMORY:
 471                 return rscreen->b.info.vram_size >> 20;
 472         case PIPE_CAP_UMA:
 473                 return 0;
 474         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 475                 return rscreen->b.chip_class >= R700;
 476         case PIPE_CAP_PCI_GROUP:
 477                 return rscreen->b.info.pci_domain;
 478         case PIPE_CAP_PCI_BUS:
 479                 return rscreen->b.info.pci_bus;
 480         case PIPE_CAP_PCI_DEVICE:
 481                 return rscreen->b.info.pci_dev;
 482         case PIPE_CAP_PCI_FUNCTION:
 483                 return rscreen->b.info.pci_func;
 484         }
 485         return 0;
 486 }
 487
 488 static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 489 {
 490         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 491
 492         switch(shader)
 493         {
 494         case PIPE_SHADER_FRAGMENT:
 495         case PIPE_SHADER_VERTEX:
 496         case PIPE_SHADER_COMPUTE:
 497                 break;
 498         case PIPE_SHADER_GEOMETRY:
 499                 if (rscreen->b.family >= CHIP_CEDAR)
 500                         break;
 501                 /* pre-evergreen geom shaders need newer kernel */
 502                 if (rscreen->b.info.drm_minor >= 37)
 503                         break;
 504                 return 0;
 505         case PIPE_SHADER_TESS_CTRL:
 506         case PIPE_SHADER_TESS_EVAL:
 507                 if (rscreen->b.family >= CHIP_CEDAR)
 508                         break;
 509         default:
 510                 return 0;
 511         }
 512
 513         switch (param) {
 514         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 515         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 516         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 517         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 518                 return 16384;
 519         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 520                 return 32;
 521         case PIPE_SHADER_CAP_MAX_INPUTS:
 522                 return shader == PIPE_SHADER_VERTEX ? 16 : 32;
 523         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 524                 return shader == PIPE_SHADER_FRAGMENT ? 8 : 32;
 525         case PIPE_SHADER_CAP_MAX_TEMPS:
 526                 return 256; /* Max native temporaries. */
 527         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 528                 if (shader == PIPE_SHADER_COMPUTE) {
 529                         uint64_t max_const_buffer_size;
 530                         pscreen->get_compute_param(pscreen, PIPE_SHADER_IR_TGSI,
 531                                 PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
 532                                 &max_const_buffer_size);
 533                         return MIN2(max_const_buffer_size, INT_MAX);
 534
 535                 } else {
 536                         return R600_MAX_CONST_BUFFER_SIZE;
 537                 }
 538         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 539                 return R600_MAX_USER_CONST_BUFFERS;
 540         case PIPE_SHADER_CAP_MAX_PREDS:
 541                 return 0; /* nothing uses this */
 542         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 543                 return 1;
 544         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 545                 return 1;
 546         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 547         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 548         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 549         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 550                 return 1;
 551         case PIPE_SHADER_CAP_SUBROUTINES:
 552                 return 0;
 553         case PIPE_SHADER_CAP_INTEGERS:
 554         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 555                 return 1;
 556         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 557         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 558                 return 16;
 559         case PIPE_SHADER_CAP_PREFERRED_IR:
 560                 if (shader == PIPE_SHADER_COMPUTE) {
 561                         return PIPE_SHADER_IR_NATIVE;
 562                 } else {
 563                         return PIPE_SHADER_IR_TGSI;
 564                 }
 565         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 566                 return 0;
 567         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 568                 if (rscreen->b.family == CHIP_ARUBA ||
 569                     rscreen->b.family == CHIP_CAYMAN ||
 570                     rscreen->b.family == CHIP_CYPRESS ||
 571                     rscreen->b.family == CHIP_HEMLOCK)
 572                         return 1;
 573                 return 0;
 574         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 575         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 576         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 577         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 578         case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 579                 return 0;
 580         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 581                 /* due to a bug in the shader compiler, some loops hang
 582                  * if they are not unrolled, see:
 583                  *    https://bugs.freedesktop.org/show_bug.cgi?id=86720
 584                  */
 585                 return 255;
 586         }
 587         return 0;
 588 }
 589
 590 static void r600_destroy_screen(struct pipe_screen* pscreen)
 591 {
 592         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 593
 594         if (!rscreen)
 595                 return;
 596
 597         if (!rscreen->b.ws->unref(rscreen->b.ws))
 598                 return;
 599
 600         if (rscreen->global_pool) {
 601                 compute_memory_pool_delete(rscreen->global_pool);
 602         }
 603
 604         r600_destroy_common_screen(&rscreen->b);
 605 }
 606
 607 static struct pipe_resource *r600_resource_create(struct pipe_screen *screen,
 608                                                   const struct pipe_resource *templ)
 609 {
 610         if (templ->target == PIPE_BUFFER &&
 611             (templ->bind & PIPE_BIND_GLOBAL))
 612                 return r600_compute_global_buffer_create(screen, templ);
 613
 614         return r600_resource_create_common(screen, templ);
 615 }
 616
 617 struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 618 {
 619         struct r600_screen *rscreen = CALLOC_STRUCT(r600_screen);
 620
 621         if (!rscreen) {
 622                 return NULL;
 623         }
 624
 625         /* Set functions first. */
 626         rscreen->b.b.context_create = r600_create_context;
 627         rscreen->b.b.destroy = r600_destroy_screen;
 628         rscreen->b.b.get_param = r600_get_param;
 629         rscreen->b.b.get_shader_param = r600_get_shader_param;
 630         rscreen->b.b.resource_create = r600_resource_create;
 631
 632         if (!r600_common_screen_init(&rscreen->b, ws)) {
 633                 FREE(rscreen);
 634                 return NULL;
 635         }
 636
 637         if (rscreen->b.info.chip_class >= EVERGREEN) {
 638                 rscreen->b.b.is_format_supported = evergreen_is_format_supported;
 639         } else {
 640                 rscreen->b.b.is_format_supported = r600_is_format_supported;
 641         }
 642
 643         rscreen->b.debug_flags |= debug_get_flags_option("R600_DEBUG", r600_debug_options, 0);
 644         if (debug_get_bool_option("R600_DEBUG_COMPUTE", FALSE))
 645                 rscreen->b.debug_flags |= DBG_COMPUTE;
 646         if (debug_get_bool_option("R600_DUMP_SHADERS", FALSE))
 647                 rscreen->b.debug_flags |= DBG_FS | DBG_VS | DBG_GS | DBG_PS | DBG_CS | DBG_TCS | DBG_TES;
 648         if (!debug_get_bool_option("R600_HYPERZ", TRUE))
 649                 rscreen->b.debug_flags |= DBG_NO_HYPERZ;
 650
 651         if (rscreen->b.family == CHIP_UNKNOWN) {
 652                 fprintf(stderr, "r600: Unknown chipset 0x%04X\n", rscreen->b.info.pci_id);
 653                 FREE(rscreen);
 654                 return NULL;
 655         }
 656
 657         /* Figure out streamout kernel support. */
 658         switch (rscreen->b.chip_class) {
 659         case R600:
 660                 if (rscreen->b.family < CHIP_RS780) {
 661                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 662                 } else {
 663                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 23;
 664                 }
 665                 break;
 666         case R700:
 667                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 17;
 668                 break;
 669         case EVERGREEN:
 670         case CAYMAN:
 671                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 672                 break;
 673         default:
 674                 rscreen->b.has_streamout = FALSE;
 675                 break;
 676         }
 677
 678         /* MSAA support. */
 679         switch (rscreen->b.chip_class) {
 680         case R600:
 681         case R700:
 682                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 22;
 683                 rscreen->has_compressed_msaa_texturing = false;
 684                 break;
 685         case EVERGREEN:
 686                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 687                 rscreen->has_compressed_msaa_texturing = rscreen->b.info.drm_minor >= 24;
 688                 break;
 689         case CAYMAN:
 690                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 691                 rscreen->has_compressed_msaa_texturing = true;
 692                 break;
 693         default:
 694                 rscreen->has_msaa = FALSE;
 695                 rscreen->has_compressed_msaa_texturing = false;
 696         }
 697
 698         rscreen->b.has_cp_dma = rscreen->b.info.drm_minor >= 27 &&
 699                               !(rscreen->b.debug_flags & DBG_NO_CP_DMA);
 700
 701         rscreen->b.barrier_flags.cp_to_L2 =
 702                 R600_CONTEXT_INV_VERTEX_CACHE |
 703                 R600_CONTEXT_INV_TEX_CACHE |
 704                 R600_CONTEXT_INV_CONST_CACHE;
 705         rscreen->b.barrier_flags.compute_to_L2 = R600_CONTEXT_PS_PARTIAL_FLUSH;
 706
 707         rscreen->global_pool = compute_memory_pool_new(rscreen);
 708
 709         /* Create the auxiliary context. This must be done last. */
 710         rscreen->b.aux_context = rscreen->b.b.context_create(&rscreen->b.b, NULL, 0);
 711
 712 #if 0 /* This is for testing whether aux_context and buffer clearing work correctly. */
 713         struct pipe_resource templ = {};
 714
 715         templ.width0 = 4;
 716         templ.height0 = 2048;
 717         templ.depth0 = 1;
 718         templ.array_size = 1;
 719         templ.target = PIPE_TEXTURE_2D;
 720         templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 721         templ.usage = PIPE_USAGE_DEFAULT;
 722
 723         struct r600_resource *res = r600_resource(rscreen->screen.resource_create(&rscreen->screen, &templ));
 724         unsigned char *map = ws->buffer_map(res->buf, NULL, PIPE_TRANSFER_WRITE);
 725
 726         memset(map, 0, 256);
 727
 728         r600_screen_clear_buffer(rscreen, &res->b.b, 4, 4, 0xCC);
 729         r600_screen_clear_buffer(rscreen, &res->b.b, 8, 4, 0xDD);
 730         r600_screen_clear_buffer(rscreen, &res->b.b, 12, 4, 0xEE);
 731         r600_screen_clear_buffer(rscreen, &res->b.b, 20, 4, 0xFF);
 732         r600_screen_clear_buffer(rscreen, &res->b.b, 32, 20, 0x87);
 733
 734         ws->buffer_wait(res->buf, RADEON_USAGE_WRITE);
 735
 736         int i;
 737         for (i = 0; i < 256; i++) {
 738                 printf("%02X", map[i]);
 739                 if (i % 16 == 15)
 740                         printf("\n");
 741         }
 742 #endif
 743
 744         if (rscreen->b.debug_flags & DBG_TEST_DMA)
 745                 r600_test_dma(&rscreen->b);
 746
 747         r600_query_fix_enabled_rb_mask(&rscreen->b);
 748         return &rscreen->b.b;
 749 }