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 #if defined(R600_USE_LLVM)
  47         { "llvm", DBG_LLVM, "Enable the LLVM shader compiler" },
  48 #endif
  49         { "nocpdma", DBG_NO_CP_DMA, "Disable CP DMA" },
  50
  51         /* shader backend */
  52         { "nosb", DBG_NO_SB, "Disable sb backend for graphics shaders" },
  53         { "sbcl", DBG_SB_CS, "Enable sb backend for compute shaders" },
  54         { "sbdry", DBG_SB_DRY_RUN, "Don't use optimized bytecode (just print the dumps)" },
  55         { "sbstat", DBG_SB_STAT, "Print optimization statistics for shaders" },
  56         { "sbdump", DBG_SB_DUMP, "Print IR dumps after some optimization passes" },
  57         { "sbnofallback", DBG_SB_NO_FALLBACK, "Abort on errors instead of fallback" },
  58         { "sbdisasm", DBG_SB_DISASM, "Use sb disassembler for shader dumps" },
  59         { "sbsafemath", DBG_SB_SAFEMATH, "Disable unsafe math optimizations" },
  60
  61         DEBUG_NAMED_VALUE_END /* must be last */
  62 };
  63
  64 /*
  65  * pipe_context
  66  */
  67
  68 static void r600_destroy_context(struct pipe_context *context)
  69 {
  70         struct r600_context *rctx = (struct r600_context *)context;
  71
  72         r600_isa_destroy(rctx->isa);
  73
  74         r600_sb_context_destroy(rctx->sb_context);
  75
  76         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_cmask, NULL);
  77         pipe_resource_reference((struct pipe_resource**)&rctx->dummy_fmask, NULL);
  78
  79         if (rctx->fixed_func_tcs_shader)
  80                 rctx->b.b.delete_tcs_state(&rctx->b.b, rctx->fixed_func_tcs_shader);
  81
  82         if (rctx->dummy_pixel_shader) {
  83                 rctx->b.b.delete_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
  84         }
  85         if (rctx->custom_dsa_flush) {
  86                 rctx->b.b.delete_depth_stencil_alpha_state(&rctx->b.b, rctx->custom_dsa_flush);
  87         }
  88         if (rctx->custom_blend_resolve) {
  89                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_resolve);
  90         }
  91         if (rctx->custom_blend_decompress) {
  92                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_decompress);
  93         }
  94         if (rctx->custom_blend_fastclear) {
  95                 rctx->b.b.delete_blend_state(&rctx->b.b, rctx->custom_blend_fastclear);
  96         }
  97         util_unreference_framebuffer_state(&rctx->framebuffer.state);
  98
  99         if (rctx->blitter) {
 100                 util_blitter_destroy(rctx->blitter);
 101         }
 102         if (rctx->allocator_fetch_shader) {
 103                 u_suballocator_destroy(rctx->allocator_fetch_shader);
 104         }
 105
 106         r600_release_command_buffer(&rctx->start_cs_cmd);
 107
 108         FREE(rctx->start_compute_cs_cmd.buf);
 109
 110         r600_common_context_cleanup(&rctx->b);
 111         FREE(rctx);
 112 }
 113
 114 static struct pipe_context *r600_create_context(struct pipe_screen *screen,
 115                                                 void *priv, unsigned flags)
 116 {
 117         struct r600_context *rctx = CALLOC_STRUCT(r600_context);
 118         struct r600_screen* rscreen = (struct r600_screen *)screen;
 119         struct radeon_winsys *ws = rscreen->b.ws;
 120
 121         if (!rctx)
 122                 return NULL;
 123
 124         rctx->b.b.screen = screen;
 125         rctx->b.b.priv = priv;
 126         rctx->b.b.destroy = r600_destroy_context;
 127         rctx->b.set_atom_dirty = (void *)r600_set_atom_dirty;
 128
 129         if (!r600_common_context_init(&rctx->b, &rscreen->b))
 130                 goto fail;
 131
 132         rctx->screen = rscreen;
 133         rctx->keep_tiling_flags = rscreen->b.info.drm_minor >= 12;
 134
 135         r600_init_blit_functions(rctx);
 136
 137         if (rscreen->b.info.has_uvd) {
 138                 rctx->b.b.create_video_codec = r600_uvd_create_decoder;
 139                 rctx->b.b.create_video_buffer = r600_video_buffer_create;
 140         } else {
 141                 rctx->b.b.create_video_codec = vl_create_decoder;
 142                 rctx->b.b.create_video_buffer = vl_video_buffer_create;
 143         }
 144
 145         r600_init_common_state_functions(rctx);
 146
 147         switch (rctx->b.chip_class) {
 148         case R600:
 149         case R700:
 150                 r600_init_state_functions(rctx);
 151                 r600_init_atom_start_cs(rctx);
 152                 rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
 153                 rctx->custom_blend_resolve = rctx->b.chip_class == R700 ? r700_create_resolve_blend(rctx)
 154                                                                       : r600_create_resolve_blend(rctx);
 155                 rctx->custom_blend_decompress = r600_create_decompress_blend(rctx);
 156                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_RV610 ||
 157                                            rctx->b.family == CHIP_RV620 ||
 158                                            rctx->b.family == CHIP_RS780 ||
 159                                            rctx->b.family == CHIP_RS880 ||
 160                                            rctx->b.family == CHIP_RV710);
 161                 break;
 162         case EVERGREEN:
 163         case CAYMAN:
 164                 evergreen_init_state_functions(rctx);
 165                 evergreen_init_atom_start_cs(rctx);
 166                 evergreen_init_atom_start_compute_cs(rctx);
 167                 rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 168                 rctx->custom_blend_resolve = evergreen_create_resolve_blend(rctx);
 169                 rctx->custom_blend_decompress = evergreen_create_decompress_blend(rctx);
 170                 rctx->custom_blend_fastclear = evergreen_create_fastclear_blend(rctx);
 171                 rctx->has_vertex_cache = !(rctx->b.family == CHIP_CEDAR ||
 172                                            rctx->b.family == CHIP_PALM ||
 173                                            rctx->b.family == CHIP_SUMO ||
 174                                            rctx->b.family == CHIP_SUMO2 ||
 175                                            rctx->b.family == CHIP_CAICOS ||
 176                                            rctx->b.family == CHIP_CAYMAN ||
 177                                            rctx->b.family == CHIP_ARUBA);
 178                 break;
 179         default:
 180                 R600_ERR("Unsupported chip class %d.\n", rctx->b.chip_class);
 181                 goto fail;
 182         }
 183
 184         rctx->b.gfx.cs = ws->cs_create(rctx->b.ctx, RING_GFX,
 185                                        r600_context_gfx_flush, rctx,
 186                                        rscreen->b.trace_bo ?
 187                                                rscreen->b.trace_bo->buf : NULL);
 188         rctx->b.gfx.flush = r600_context_gfx_flush;
 189
 190         rctx->allocator_fetch_shader = u_suballocator_create(&rctx->b.b, 64 * 1024, 256,
 191                                                              0, PIPE_USAGE_DEFAULT, FALSE);
 192         if (!rctx->allocator_fetch_shader)
 193                 goto fail;
 194
 195         rctx->isa = calloc(1, sizeof(struct r600_isa));
 196         if (!rctx->isa || r600_isa_init(rctx, rctx->isa))
 197                 goto fail;
 198
 199         if (rscreen->b.debug_flags & DBG_FORCE_DMA)
 200                 rctx->b.b.resource_copy_region = rctx->b.dma_copy;
 201
 202         rctx->blitter = util_blitter_create(&rctx->b.b);
 203         if (rctx->blitter == NULL)
 204                 goto fail;
 205         util_blitter_set_texture_multisample(rctx->blitter, rscreen->has_msaa);
 206         rctx->blitter->draw_rectangle = r600_draw_rectangle;
 207
 208         r600_begin_new_cs(rctx);
 209         r600_query_init_backend_mask(&rctx->b); /* this emits commands and must be last */
 210
 211         rctx->dummy_pixel_shader =
 212                 util_make_fragment_cloneinput_shader(&rctx->b.b, 0,
 213                                                      TGSI_SEMANTIC_GENERIC,
 214                                                      TGSI_INTERPOLATE_CONSTANT);
 215         rctx->b.b.bind_fs_state(&rctx->b.b, rctx->dummy_pixel_shader);
 216
 217         return &rctx->b.b;
 218
 219 fail:
 220         r600_destroy_context(&rctx->b.b);
 221         return NULL;
 222 }
 223
 224 /*
 225  * pipe_screen
 226  */
 227
 228 static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 229 {
 230         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 231         enum radeon_family family = rscreen->b.family;
 232
 233         switch (param) {
 234         /* Supported features (boolean caps). */
 235         case PIPE_CAP_NPOT_TEXTURES:
 236         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 237         case PIPE_CAP_TWO_SIDED_STENCIL:
 238         case PIPE_CAP_ANISOTROPIC_FILTER:
 239         case PIPE_CAP_POINT_SPRITE:
 240         case PIPE_CAP_OCCLUSION_QUERY:
 241         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 242         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 243         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 244         case PIPE_CAP_TEXTURE_SWIZZLE:
 245         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 246         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 247         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 248         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 249         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 250         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 251         case PIPE_CAP_SM3:
 252         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 253         case PIPE_CAP_PRIMITIVE_RESTART:
 254         case PIPE_CAP_CONDITIONAL_RENDER:
 255         case PIPE_CAP_TEXTURE_BARRIER:
 256         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 257         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 258         case PIPE_CAP_TGSI_INSTANCEID:
 259         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 260         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 261         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 262         case PIPE_CAP_USER_INDEX_BUFFERS:
 263         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 264         case PIPE_CAP_START_INSTANCE:
 265         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 266         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 267         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 268         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 269         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 270         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 271         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 272         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 273         case PIPE_CAP_SAMPLE_SHADING:
 274         case PIPE_CAP_CLIP_HALFZ:
 275         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 276         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 277         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 278         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 279         case PIPE_CAP_TGSI_TXQS:
 280         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 281         case PIPE_CAP_INVALIDATE_BUFFER:
 282                 return 1;
 283
 284         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 285                 return rscreen->b.info.drm_major == 2 && rscreen->b.info.drm_minor >= 43;
 286
 287         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 288                 return !R600_BIG_ENDIAN && rscreen->b.info.has_userptr;
 289
 290         case PIPE_CAP_COMPUTE:
 291                 return rscreen->b.chip_class > R700;
 292
 293         case PIPE_CAP_TGSI_TEXCOORD:
 294                 return 0;
 295
 296         case PIPE_CAP_FAKE_SW_MSAA:
 297                 return 0;
 298
 299         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 300                 return MIN2(rscreen->b.info.vram_size, 0xFFFFFFFF);
 301
 302         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 303                 return R600_MAP_BUFFER_ALIGNMENT;
 304
 305         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 306                 return 256;
 307
 308         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 309                 return 1;
 310
 311         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 312                 if (family >= CHIP_CEDAR)
 313                    return 410;
 314                 /* pre-evergreen geom shaders need newer kernel */
 315                 if (rscreen->b.info.drm_minor >= 37)
 316                    return 330;
 317                 return 140;
 318
 319         /* Supported except the original R600. */
 320         case PIPE_CAP_INDEP_BLEND_ENABLE:
 321         case PIPE_CAP_INDEP_BLEND_FUNC:
 322                 /* R600 doesn't support per-MRT blends */
 323                 return family == CHIP_R600 ? 0 : 1;
 324
 325         /* Supported on Evergreen. */
 326         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 327         case PIPE_CAP_CUBE_MAP_ARRAY:
 328         case PIPE_CAP_TEXTURE_GATHER_SM5:
 329         case PIPE_CAP_TEXTURE_QUERY_LOD:
 330         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 331         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 332                 return family >= CHIP_CEDAR ? 1 : 0;
 333         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 334                 return family >= CHIP_CEDAR ? 4 : 0;
 335         case PIPE_CAP_DRAW_INDIRECT:
 336                 /* kernel command checker support is also required */
 337                 return family >= CHIP_CEDAR && rscreen->b.info.drm_minor >= 41;
 338
 339         /* Unsupported features. */
 340         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 341         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 342         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 343         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 344         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 345         case PIPE_CAP_USER_VERTEX_BUFFERS:
 346         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 347         case PIPE_CAP_VERTEXID_NOBASE:
 348         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 349         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 350         case PIPE_CAP_SHAREABLE_SHADERS:
 351         case PIPE_CAP_CLEAR_TEXTURE:
 352         case PIPE_CAP_DRAW_PARAMETERS:
 353         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 354         case PIPE_CAP_MULTI_DRAW_INDIRECT:
 355         case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 356         case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 357         case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 358         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 359         case PIPE_CAP_GENERATE_MIPMAP:
 360                 return 0;
 361
 362         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 363                 if (family >= CHIP_CEDAR)
 364                         return 30;
 365                 else
 366                         return 0;
 367         /* Stream output. */
 368         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 369                 return rscreen->b.has_streamout ? 4 : 0;
 370         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 371                 return rscreen->b.has_streamout ? 1 : 0;
 372         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 373         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 374                 return 32*4;
 375
 376         /* Geometry shader output. */
 377         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 378                 return 1024;
 379         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 380                 return 16384;
 381         case PIPE_CAP_MAX_VERTEX_STREAMS:
 382                 return family >= CHIP_CEDAR ? 4 : 1;
 383
 384         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 385                 return 2047;
 386
 387         /* Texturing. */
 388         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 389         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 390                 if (family >= CHIP_CEDAR)
 391                         return 15;
 392                 else
 393                         return 14;
 394         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 395                 /* textures support 8192, but layered rendering supports 2048 */
 396                 return 12;
 397         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 398                 /* textures support 8192, but layered rendering supports 2048 */
 399                 return rscreen->b.info.drm_minor >= 9 ? 2048 : 0;
 400
 401         /* Render targets. */
 402         case PIPE_CAP_MAX_RENDER_TARGETS:
 403                 /* XXX some r6xx are buggy and can only do 4 */
 404                 return 8;
 405
 406         case PIPE_CAP_MAX_VIEWPORTS:
 407                 return R600_MAX_VIEWPORTS;
 408
 409         /* Timer queries, present when the clock frequency is non zero. */
 410         case PIPE_CAP_QUERY_TIME_ELAPSED:
 411                 return rscreen->b.info.r600_clock_crystal_freq != 0;
 412         case PIPE_CAP_QUERY_TIMESTAMP:
 413                 return rscreen->b.info.drm_minor >= 20 &&
 414                        rscreen->b.info.r600_clock_crystal_freq != 0;
 415
 416         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 417         case PIPE_CAP_MIN_TEXEL_OFFSET:
 418                 return -8;
 419
 420         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 421         case PIPE_CAP_MAX_TEXEL_OFFSET:
 422                 return 7;
 423
 424         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 425                 return PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600;
 426         case PIPE_CAP_ENDIANNESS:
 427                 return PIPE_ENDIAN_LITTLE;
 428
 429         case PIPE_CAP_VENDOR_ID:
 430                 return 0x1002;
 431         case PIPE_CAP_DEVICE_ID:
 432                 return rscreen->b.info.pci_id;
 433         case PIPE_CAP_ACCELERATED:
 434                 return 1;
 435         case PIPE_CAP_VIDEO_MEMORY:
 436                 return rscreen->b.info.vram_size >> 20;
 437         case PIPE_CAP_UMA:
 438                 return 0;
 439         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 440                 return rscreen->b.chip_class >= R700;
 441         }
 442         return 0;
 443 }
 444
 445 static int r600_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
 446 {
 447         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 448
 449         switch(shader)
 450         {
 451         case PIPE_SHADER_FRAGMENT:
 452         case PIPE_SHADER_VERTEX:
 453         case PIPE_SHADER_COMPUTE:
 454                 break;
 455         case PIPE_SHADER_GEOMETRY:
 456                 if (rscreen->b.family >= CHIP_CEDAR)
 457                         break;
 458                 /* pre-evergreen geom shaders need newer kernel */
 459                 if (rscreen->b.info.drm_minor >= 37)
 460                         break;
 461                 return 0;
 462         case PIPE_SHADER_TESS_CTRL:
 463         case PIPE_SHADER_TESS_EVAL:
 464                 if (rscreen->b.family >= CHIP_CEDAR)
 465                         break;
 466         default:
 467                 return 0;
 468         }
 469
 470         switch (param) {
 471         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 472         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 473         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 474         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 475                 return 16384;
 476         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 477                 return 32;
 478         case PIPE_SHADER_CAP_MAX_INPUTS:
 479                 return shader == PIPE_SHADER_VERTEX ? 16 : 32;
 480         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 481                 return shader == PIPE_SHADER_FRAGMENT ? 8 : 32;
 482         case PIPE_SHADER_CAP_MAX_TEMPS:
 483                 return 256; /* Max native temporaries. */
 484         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 485                 if (shader == PIPE_SHADER_COMPUTE) {
 486                         uint64_t max_const_buffer_size;
 487                         pscreen->get_compute_param(pscreen,
 488                                 PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
 489                                 &max_const_buffer_size);
 490                         return max_const_buffer_size;
 491
 492                 } else {
 493                         return R600_MAX_CONST_BUFFER_SIZE;
 494                 }
 495         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 496                 return R600_MAX_USER_CONST_BUFFERS;
 497         case PIPE_SHADER_CAP_MAX_PREDS:
 498                 return 0; /* nothing uses this */
 499         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 500                 return 1;
 501         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 502                 return 1;
 503         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 504         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 505         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 506         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 507                 return 1;
 508         case PIPE_SHADER_CAP_SUBROUTINES:
 509                 return 0;
 510         case PIPE_SHADER_CAP_INTEGERS:
 511         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 512                 return 1;
 513         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 514         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 515                 return 16;
 516         case PIPE_SHADER_CAP_PREFERRED_IR:
 517                 if (shader == PIPE_SHADER_COMPUTE) {
 518 #if HAVE_LLVM < 0x0306
 519                         return PIPE_SHADER_IR_LLVM;
 520 #else
 521                         return PIPE_SHADER_IR_NATIVE;
 522 #endif
 523                 } else {
 524                         return PIPE_SHADER_IR_TGSI;
 525                 }
 526         case PIPE_SHADER_CAP_DOUBLES:
 527                 if (rscreen->b.family == CHIP_CYPRESS ||
 528                         rscreen->b.family == CHIP_CAYMAN || rscreen->b.family == CHIP_ARUBA)
 529                         return 1;
 530                 return 0;
 531         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 532         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 533         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 534         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 535                 return 0;
 536         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 537                 /* due to a bug in the shader compiler, some loops hang
 538                  * if they are not unrolled, see:
 539                  *    https://bugs.freedesktop.org/show_bug.cgi?id=86720
 540                  */
 541                 return 255;
 542         }
 543         return 0;
 544 }
 545
 546 static void r600_destroy_screen(struct pipe_screen* pscreen)
 547 {
 548         struct r600_screen *rscreen = (struct r600_screen *)pscreen;
 549
 550         if (!rscreen)
 551                 return;
 552
 553         if (!rscreen->b.ws->unref(rscreen->b.ws))
 554                 return;
 555
 556         if (rscreen->global_pool) {
 557                 compute_memory_pool_delete(rscreen->global_pool);
 558         }
 559
 560         r600_destroy_common_screen(&rscreen->b);
 561 }
 562
 563 static struct pipe_resource *r600_resource_create(struct pipe_screen *screen,
 564                                                   const struct pipe_resource *templ)
 565 {
 566         if (templ->target == PIPE_BUFFER &&
 567             (templ->bind & PIPE_BIND_GLOBAL))
 568                 return r600_compute_global_buffer_create(screen, templ);
 569
 570         return r600_resource_create_common(screen, templ);
 571 }
 572
 573 struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 574 {
 575         struct r600_screen *rscreen = CALLOC_STRUCT(r600_screen);
 576
 577         if (!rscreen) {
 578                 return NULL;
 579         }
 580
 581         /* Set functions first. */
 582         rscreen->b.b.context_create = r600_create_context;
 583         rscreen->b.b.destroy = r600_destroy_screen;
 584         rscreen->b.b.get_param = r600_get_param;
 585         rscreen->b.b.get_shader_param = r600_get_shader_param;
 586         rscreen->b.b.resource_create = r600_resource_create;
 587
 588         if (!r600_common_screen_init(&rscreen->b, ws)) {
 589                 FREE(rscreen);
 590                 return NULL;
 591         }
 592
 593         if (rscreen->b.info.chip_class >= EVERGREEN) {
 594                 rscreen->b.b.is_format_supported = evergreen_is_format_supported;
 595         } else {
 596                 rscreen->b.b.is_format_supported = r600_is_format_supported;
 597         }
 598
 599         rscreen->b.debug_flags |= debug_get_flags_option("R600_DEBUG", r600_debug_options, 0);
 600         if (debug_get_bool_option("R600_DEBUG_COMPUTE", FALSE))
 601                 rscreen->b.debug_flags |= DBG_COMPUTE;
 602         if (debug_get_bool_option("R600_DUMP_SHADERS", FALSE))
 603                 rscreen->b.debug_flags |= DBG_FS | DBG_VS | DBG_GS | DBG_PS | DBG_CS | DBG_TCS | DBG_TES;
 604         if (!debug_get_bool_option("R600_HYPERZ", TRUE))
 605                 rscreen->b.debug_flags |= DBG_NO_HYPERZ;
 606         if (debug_get_bool_option("R600_LLVM", FALSE))
 607                 rscreen->b.debug_flags |= DBG_LLVM;
 608
 609         if (rscreen->b.family == CHIP_UNKNOWN) {
 610                 fprintf(stderr, "r600: Unknown chipset 0x%04X\n", rscreen->b.info.pci_id);
 611                 FREE(rscreen);
 612                 return NULL;
 613         }
 614
 615         /* Figure out streamout kernel support. */
 616         switch (rscreen->b.chip_class) {
 617         case R600:
 618                 if (rscreen->b.family < CHIP_RS780) {
 619                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 620                 } else {
 621                         rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 23;
 622                 }
 623                 break;
 624         case R700:
 625                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 17;
 626                 break;
 627         case EVERGREEN:
 628         case CAYMAN:
 629                 rscreen->b.has_streamout = rscreen->b.info.drm_minor >= 14;
 630                 break;
 631         default:
 632                 rscreen->b.has_streamout = FALSE;
 633                 break;
 634         }
 635
 636         /* MSAA support. */
 637         switch (rscreen->b.chip_class) {
 638         case R600:
 639         case R700:
 640                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 22;
 641                 rscreen->has_compressed_msaa_texturing = false;
 642                 break;
 643         case EVERGREEN:
 644                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 645                 rscreen->has_compressed_msaa_texturing = rscreen->b.info.drm_minor >= 24;
 646                 break;
 647         case CAYMAN:
 648                 rscreen->has_msaa = rscreen->b.info.drm_minor >= 19;
 649                 rscreen->has_compressed_msaa_texturing = true;
 650                 break;
 651         default:
 652                 rscreen->has_msaa = FALSE;
 653                 rscreen->has_compressed_msaa_texturing = false;
 654         }
 655
 656         rscreen->b.has_cp_dma = rscreen->b.info.drm_minor >= 27 &&
 657                               !(rscreen->b.debug_flags & DBG_NO_CP_DMA);
 658
 659         rscreen->global_pool = compute_memory_pool_new(rscreen);
 660
 661         /* Create the auxiliary context. This must be done last. */
 662         rscreen->b.aux_context = rscreen->b.b.context_create(&rscreen->b.b, NULL, 0);
 663
 664 #if 0 /* This is for testing whether aux_context and buffer clearing work correctly. */
 665         struct pipe_resource templ = {};
 666
 667         templ.width0 = 4;
 668         templ.height0 = 2048;
 669         templ.depth0 = 1;
 670         templ.array_size = 1;
 671         templ.target = PIPE_TEXTURE_2D;
 672         templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
 673         templ.usage = PIPE_USAGE_DEFAULT;
 674
 675         struct r600_resource *res = r600_resource(rscreen->screen.resource_create(&rscreen->screen, &templ));
 676         unsigned char *map = ws->buffer_map(res->buf, NULL, PIPE_TRANSFER_WRITE);
 677
 678         memset(map, 0, 256);
 679
 680         r600_screen_clear_buffer(rscreen, &res->b.b, 4, 4, 0xCC);
 681         r600_screen_clear_buffer(rscreen, &res->b.b, 8, 4, 0xDD);
 682         r600_screen_clear_buffer(rscreen, &res->b.b, 12, 4, 0xEE);
 683         r600_screen_clear_buffer(rscreen, &res->b.b, 20, 4, 0xFF);
 684         r600_screen_clear_buffer(rscreen, &res->b.b, 32, 20, 0x87);
 685
 686         ws->buffer_wait(res->buf, RADEON_USAGE_WRITE);
 687
 688         int i;
 689         for (i = 0; i < 256; i++) {
 690                 printf("%02X", map[i]);
 691                 if (i % 16 == 15)
 692                         printf("\n");
 693         }
 694 #endif
 695
 696         return &rscreen->b.b;
 697 }