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      1 /*
      2  * Copyright 2010 Jerome Glisse <glisse (at) 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 
     24 #include "si_pipe.h"
     25 #include "si_public.h"
     26 #include "si_shader_internal.h"
     27 #include "sid.h"
     28 
     29 #include "radeon/radeon_uvd.h"
     30 #include "util/u_memory.h"
     31 #include "util/u_suballoc.h"
     32 #include "vl/vl_decoder.h"
     33 #include "../ddebug/dd_util.h"
     34 
     35 #define SI_LLVM_DEFAULT_FEATURES \
     36 	"+DumpCode,+vgpr-spilling,-fp32-denormals,+fp64-denormals,-xnack"
     37 
     38 /*
     39  * pipe_context
     40  */
     41 static void si_destroy_context(struct pipe_context *context)
     42 {
     43 	struct si_context *sctx = (struct si_context *)context;
     44 	int i;
     45 
     46 	/* Unreference the framebuffer normally to disable related logic
     47 	 * properly.
     48 	 */
     49 	struct pipe_framebuffer_state fb = {};
     50 	context->set_framebuffer_state(context, &fb);
     51 
     52 	si_release_all_descriptors(sctx);
     53 
     54 	if (sctx->ce_suballocator)
     55 		u_suballocator_destroy(sctx->ce_suballocator);
     56 
     57 	pipe_resource_reference(&sctx->esgs_ring, NULL);
     58 	pipe_resource_reference(&sctx->gsvs_ring, NULL);
     59 	pipe_resource_reference(&sctx->tf_ring, NULL);
     60 	pipe_resource_reference(&sctx->tess_offchip_ring, NULL);
     61 	pipe_resource_reference(&sctx->null_const_buf.buffer, NULL);
     62 	r600_resource_reference(&sctx->border_color_buffer, NULL);
     63 	free(sctx->border_color_table);
     64 	r600_resource_reference(&sctx->scratch_buffer, NULL);
     65 	r600_resource_reference(&sctx->compute_scratch_buffer, NULL);
     66 
     67 	si_pm4_free_state(sctx, sctx->init_config, ~0);
     68 	if (sctx->init_config_gs_rings)
     69 		si_pm4_free_state(sctx, sctx->init_config_gs_rings, ~0);
     70 	for (i = 0; i < ARRAY_SIZE(sctx->vgt_shader_config); i++)
     71 		si_pm4_delete_state(sctx, vgt_shader_config, sctx->vgt_shader_config[i]);
     72 
     73 	if (sctx->fixed_func_tcs_shader.cso)
     74 		sctx->b.b.delete_tcs_state(&sctx->b.b, sctx->fixed_func_tcs_shader.cso);
     75 	if (sctx->custom_dsa_flush)
     76 		sctx->b.b.delete_depth_stencil_alpha_state(&sctx->b.b, sctx->custom_dsa_flush);
     77 	if (sctx->custom_blend_resolve)
     78 		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_resolve);
     79 	if (sctx->custom_blend_decompress)
     80 		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_decompress);
     81 	if (sctx->custom_blend_fastclear)
     82 		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_fastclear);
     83 	if (sctx->custom_blend_dcc_decompress)
     84 		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_dcc_decompress);
     85 
     86 	if (sctx->blitter)
     87 		util_blitter_destroy(sctx->blitter);
     88 
     89 	r600_common_context_cleanup(&sctx->b);
     90 
     91 	LLVMDisposeTargetMachine(sctx->tm);
     92 
     93 	r600_resource_reference(&sctx->trace_buf, NULL);
     94 	r600_resource_reference(&sctx->last_trace_buf, NULL);
     95 	radeon_clear_saved_cs(&sctx->last_gfx);
     96 
     97 	FREE(sctx);
     98 }
     99 
    100 static enum pipe_reset_status
    101 si_amdgpu_get_reset_status(struct pipe_context *ctx)
    102 {
    103 	struct si_context *sctx = (struct si_context *)ctx;
    104 
    105 	return sctx->b.ws->ctx_query_reset_status(sctx->b.ctx);
    106 }
    107 
    108 /* Apitrace profiling:
    109  *   1) qapitrace : Tools -> Profile: Measure CPU & GPU times
    110  *   2) In the middle panel, zoom in (mouse wheel) on some bad draw call
    111  *      and remember its number.
    112  *   3) In Mesa, enable queries and performance counters around that draw
    113  *      call and print the results.
    114  *   4) glretrace --benchmark --markers ..
    115  */
    116 static void si_emit_string_marker(struct pipe_context *ctx,
    117 				  const char *string, int len)
    118 {
    119 	struct si_context *sctx = (struct si_context *)ctx;
    120 
    121 	dd_parse_apitrace_marker(string, len, &sctx->apitrace_call_number);
    122 }
    123 
    124 static LLVMTargetMachineRef
    125 si_create_llvm_target_machine(struct si_screen *sscreen)
    126 {
    127 	const char *triple = "amdgcn--";
    128 
    129 	return LLVMCreateTargetMachine(si_llvm_get_amdgpu_target(triple), triple,
    130 				       r600_get_llvm_processor_name(sscreen->b.family),
    131 #if HAVE_LLVM >= 0x0308
    132 				       sscreen->b.debug_flags & DBG_SI_SCHED ?
    133 					       SI_LLVM_DEFAULT_FEATURES ",+si-scheduler" :
    134 #endif
    135 					       SI_LLVM_DEFAULT_FEATURES,
    136 				       LLVMCodeGenLevelDefault,
    137 				       LLVMRelocDefault,
    138 				       LLVMCodeModelDefault);
    139 }
    140 
    141 static struct pipe_context *si_create_context(struct pipe_screen *screen,
    142                                               void *priv, unsigned flags)
    143 {
    144 	struct si_context *sctx = CALLOC_STRUCT(si_context);
    145 	struct si_screen* sscreen = (struct si_screen *)screen;
    146 	struct radeon_winsys *ws = sscreen->b.ws;
    147 	int shader, i;
    148 
    149 	if (!sctx)
    150 		return NULL;
    151 
    152 	if (sscreen->b.debug_flags & DBG_CHECK_VM)
    153 		flags |= PIPE_CONTEXT_DEBUG;
    154 
    155 	if (flags & PIPE_CONTEXT_DEBUG)
    156 		sscreen->record_llvm_ir = true; /* racy but not critical */
    157 
    158 	sctx->b.b.screen = screen; /* this must be set first */
    159 	sctx->b.b.priv = priv;
    160 	sctx->b.b.destroy = si_destroy_context;
    161 	sctx->b.b.emit_string_marker = si_emit_string_marker;
    162 	sctx->b.set_atom_dirty = (void *)si_set_atom_dirty;
    163 	sctx->screen = sscreen; /* Easy accessing of screen/winsys. */
    164 	sctx->is_debug = (flags & PIPE_CONTEXT_DEBUG) != 0;
    165 
    166 	if (!r600_common_context_init(&sctx->b, &sscreen->b, flags))
    167 		goto fail;
    168 
    169 	if (sscreen->b.info.drm_major == 3)
    170 		sctx->b.b.get_device_reset_status = si_amdgpu_get_reset_status;
    171 
    172 	si_init_blit_functions(sctx);
    173 	si_init_compute_functions(sctx);
    174 	si_init_cp_dma_functions(sctx);
    175 	si_init_debug_functions(sctx);
    176 
    177 	if (sscreen->b.info.has_uvd) {
    178 		sctx->b.b.create_video_codec = si_uvd_create_decoder;
    179 		sctx->b.b.create_video_buffer = si_video_buffer_create;
    180 	} else {
    181 		sctx->b.b.create_video_codec = vl_create_decoder;
    182 		sctx->b.b.create_video_buffer = vl_video_buffer_create;
    183 	}
    184 
    185 	sctx->b.gfx.cs = ws->cs_create(sctx->b.ctx, RING_GFX,
    186 				       si_context_gfx_flush, sctx);
    187 
    188 	/* SI + AMDGPU + CE = GPU hang */
    189 	if (!(sscreen->b.debug_flags & DBG_NO_CE) && ws->cs_add_const_ib &&
    190 	    sscreen->b.chip_class != SI &&
    191 	    /* These can't use CE due to a power gating bug in the kernel. */
    192 	    sscreen->b.family != CHIP_CARRIZO &&
    193 	    sscreen->b.family != CHIP_STONEY) {
    194 		sctx->ce_ib = ws->cs_add_const_ib(sctx->b.gfx.cs);
    195 		if (!sctx->ce_ib)
    196 			goto fail;
    197 
    198 		if (ws->cs_add_const_preamble_ib) {
    199 			sctx->ce_preamble_ib =
    200 			           ws->cs_add_const_preamble_ib(sctx->b.gfx.cs);
    201 
    202 			if (!sctx->ce_preamble_ib)
    203 				goto fail;
    204 		}
    205 
    206 		sctx->ce_suballocator =
    207 				u_suballocator_create(&sctx->b.b, 1024 * 1024,
    208 						      0, PIPE_USAGE_DEFAULT, false);
    209 		if (!sctx->ce_suballocator)
    210 			goto fail;
    211 	}
    212 
    213 	sctx->b.gfx.flush = si_context_gfx_flush;
    214 
    215 	/* Border colors. */
    216 	sctx->border_color_table = malloc(SI_MAX_BORDER_COLORS *
    217 					  sizeof(*sctx->border_color_table));
    218 	if (!sctx->border_color_table)
    219 		goto fail;
    220 
    221 	sctx->border_color_buffer = (struct r600_resource*)
    222 		pipe_buffer_create(screen, 0, PIPE_USAGE_DEFAULT,
    223 				   SI_MAX_BORDER_COLORS *
    224 				   sizeof(*sctx->border_color_table));
    225 	if (!sctx->border_color_buffer)
    226 		goto fail;
    227 
    228 	sctx->border_color_map =
    229 		ws->buffer_map(sctx->border_color_buffer->buf,
    230 			       NULL, PIPE_TRANSFER_WRITE);
    231 	if (!sctx->border_color_map)
    232 		goto fail;
    233 
    234 	si_init_all_descriptors(sctx);
    235 	si_init_state_functions(sctx);
    236 	si_init_shader_functions(sctx);
    237 
    238 	if (sctx->b.chip_class >= CIK)
    239 		cik_init_sdma_functions(sctx);
    240 	else
    241 		si_init_dma_functions(sctx);
    242 
    243 	if (sscreen->b.debug_flags & DBG_FORCE_DMA)
    244 		sctx->b.b.resource_copy_region = sctx->b.dma_copy;
    245 
    246 	sctx->blitter = util_blitter_create(&sctx->b.b);
    247 	if (sctx->blitter == NULL)
    248 		goto fail;
    249 	sctx->blitter->draw_rectangle = r600_draw_rectangle;
    250 
    251 	sctx->sample_mask.sample_mask = 0xffff;
    252 
    253 	/* these must be last */
    254 	si_begin_new_cs(sctx);
    255 	r600_query_init_backend_mask(&sctx->b); /* this emits commands and must be last */
    256 
    257 	/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD doesn't skip loads
    258 	 * if NUM_RECORDS == 0). We need to use a dummy buffer instead. */
    259 	if (sctx->b.chip_class == CIK) {
    260 		sctx->null_const_buf.buffer = pipe_buffer_create(screen, PIPE_BIND_CONSTANT_BUFFER,
    261 								 PIPE_USAGE_DEFAULT, 16);
    262 		if (!sctx->null_const_buf.buffer)
    263 			goto fail;
    264 		sctx->null_const_buf.buffer_size = sctx->null_const_buf.buffer->width0;
    265 
    266 		for (shader = 0; shader < SI_NUM_SHADERS; shader++) {
    267 			for (i = 0; i < SI_NUM_CONST_BUFFERS; i++) {
    268 				sctx->b.b.set_constant_buffer(&sctx->b.b, shader, i,
    269 							      &sctx->null_const_buf);
    270 			}
    271 		}
    272 
    273 		si_set_rw_buffer(sctx, SI_HS_CONST_DEFAULT_TESS_LEVELS,
    274 				 &sctx->null_const_buf);
    275 		si_set_rw_buffer(sctx, SI_VS_CONST_CLIP_PLANES,
    276 				 &sctx->null_const_buf);
    277 		si_set_rw_buffer(sctx, SI_PS_CONST_POLY_STIPPLE,
    278 				 &sctx->null_const_buf);
    279 		si_set_rw_buffer(sctx, SI_PS_CONST_SAMPLE_POSITIONS,
    280 				 &sctx->null_const_buf);
    281 
    282 		/* Clear the NULL constant buffer, because loads should return zeros. */
    283 		sctx->b.clear_buffer(&sctx->b.b, sctx->null_const_buf.buffer, 0,
    284 				     sctx->null_const_buf.buffer->width0, 0,
    285 				     R600_COHERENCY_SHADER);
    286 	}
    287 
    288 	uint64_t max_threads_per_block;
    289 	screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
    290 				  PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
    291 				  &max_threads_per_block);
    292 
    293 	/* The maximum number of scratch waves. Scratch space isn't divided
    294 	 * evenly between CUs. The number is only a function of the number of CUs.
    295 	 * We can decrease the constant to decrease the scratch buffer size.
    296 	 *
    297 	 * sctx->scratch_waves must be >= the maximum posible size of
    298 	 * 1 threadgroup, so that the hw doesn't hang from being unable
    299 	 * to start any.
    300 	 *
    301 	 * The recommended value is 4 per CU at most. Higher numbers don't
    302 	 * bring much benefit, but they still occupy chip resources (think
    303 	 * async compute). I've seen ~2% performance difference between 4 and 32.
    304 	 */
    305 	sctx->scratch_waves = MAX2(32 * sscreen->b.info.num_good_compute_units,
    306 				   max_threads_per_block / 64);
    307 
    308 	sctx->tm = si_create_llvm_target_machine(sscreen);
    309 
    310 	return &sctx->b.b;
    311 fail:
    312 	fprintf(stderr, "radeonsi: Failed to create a context.\n");
    313 	si_destroy_context(&sctx->b.b);
    314 	return NULL;
    315 }
    316 
    317 /*
    318  * pipe_screen
    319  */
    320 static bool si_have_tgsi_compute(struct si_screen *sscreen)
    321 {
    322 	/* Old kernels disallowed some register writes for SI
    323 	 * that are used for indirect dispatches. */
    324 	return HAVE_LLVM >= 0x309 &&
    325 	       (sscreen->b.chip_class >= CIK ||
    326 		sscreen->b.info.drm_major == 3 ||
    327 		(sscreen->b.info.drm_major == 2 &&
    328 		 sscreen->b.info.drm_minor >= 45));
    329 }
    330 
    331 static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
    332 {
    333 	struct si_screen *sscreen = (struct si_screen *)pscreen;
    334 
    335 	switch (param) {
    336 	/* Supported features (boolean caps). */
    337 	case PIPE_CAP_TWO_SIDED_STENCIL:
    338 	case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
    339 	case PIPE_CAP_ANISOTROPIC_FILTER:
    340 	case PIPE_CAP_POINT_SPRITE:
    341 	case PIPE_CAP_OCCLUSION_QUERY:
    342 	case PIPE_CAP_TEXTURE_SHADOW_MAP:
    343 	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
    344 	case PIPE_CAP_BLEND_EQUATION_SEPARATE:
    345 	case PIPE_CAP_TEXTURE_SWIZZLE:
    346 	case PIPE_CAP_DEPTH_CLIP_DISABLE:
    347 	case PIPE_CAP_SHADER_STENCIL_EXPORT:
    348 	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
    349 	case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
    350 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
    351 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
    352 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
    353 	case PIPE_CAP_SM3:
    354 	case PIPE_CAP_SEAMLESS_CUBE_MAP:
    355 	case PIPE_CAP_PRIMITIVE_RESTART:
    356 	case PIPE_CAP_CONDITIONAL_RENDER:
    357 	case PIPE_CAP_TEXTURE_BARRIER:
    358 	case PIPE_CAP_INDEP_BLEND_ENABLE:
    359 	case PIPE_CAP_INDEP_BLEND_FUNC:
    360 	case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
    361 	case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
    362 	case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
    363 	case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
    364 	case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
    365 	case PIPE_CAP_USER_INDEX_BUFFERS:
    366 	case PIPE_CAP_USER_CONSTANT_BUFFERS:
    367 	case PIPE_CAP_START_INSTANCE:
    368 	case PIPE_CAP_NPOT_TEXTURES:
    369 	case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
    370 	case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
    371 	case PIPE_CAP_VERTEX_COLOR_CLAMPED:
    372 	case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
    373         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
    374 	case PIPE_CAP_TGSI_INSTANCEID:
    375 	case PIPE_CAP_COMPUTE:
    376 	case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
    377         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
    378 	case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
    379 	case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
    380 	case PIPE_CAP_CUBE_MAP_ARRAY:
    381 	case PIPE_CAP_SAMPLE_SHADING:
    382 	case PIPE_CAP_DRAW_INDIRECT:
    383 	case PIPE_CAP_CLIP_HALFZ:
    384 	case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
    385 	case PIPE_CAP_POLYGON_OFFSET_CLAMP:
    386 	case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
    387 	case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
    388 	case PIPE_CAP_TGSI_TEXCOORD:
    389 	case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
    390 	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
    391 	case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
    392 	case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
    393 	case PIPE_CAP_SHAREABLE_SHADERS:
    394 	case PIPE_CAP_DEPTH_BOUNDS_TEST:
    395 	case PIPE_CAP_SAMPLER_VIEW_TARGET:
    396 	case PIPE_CAP_TEXTURE_QUERY_LOD:
    397 	case PIPE_CAP_TEXTURE_GATHER_SM5:
    398 	case PIPE_CAP_TGSI_TXQS:
    399 	case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
    400 	case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
    401 	case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
    402 	case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
    403 	case PIPE_CAP_INVALIDATE_BUFFER:
    404 	case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
    405 	case PIPE_CAP_QUERY_MEMORY_INFO:
    406 	case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
    407 	case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
    408 	case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
    409 	case PIPE_CAP_GENERATE_MIPMAP:
    410 	case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
    411 	case PIPE_CAP_STRING_MARKER:
    412 	case PIPE_CAP_CLEAR_TEXTURE:
    413 	case PIPE_CAP_CULL_DISTANCE:
    414 	case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
    415 	case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
    416         case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
    417 		return 1;
    418 
    419 	case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
    420 		return !SI_BIG_ENDIAN && sscreen->b.info.has_userptr;
    421 
    422 	case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
    423 		return (sscreen->b.info.drm_major == 2 &&
    424 			sscreen->b.info.drm_minor >= 43) ||
    425 		       sscreen->b.info.drm_major == 3;
    426 
    427 	case PIPE_CAP_TEXTURE_MULTISAMPLE:
    428 		/* 2D tiling on CIK is supported since DRM 2.35.0 */
    429 		return sscreen->b.chip_class < CIK ||
    430 		       (sscreen->b.info.drm_major == 2 &&
    431 			sscreen->b.info.drm_minor >= 35) ||
    432 		       sscreen->b.info.drm_major == 3;
    433 
    434         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
    435                 return R600_MAP_BUFFER_ALIGNMENT;
    436 
    437 	case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
    438 	case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
    439 	case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
    440 		return 4;
    441 	case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
    442 		return HAVE_LLVM >= 0x0309 ? 4 : 0;
    443 
    444 	case PIPE_CAP_GLSL_FEATURE_LEVEL:
    445 		if (si_have_tgsi_compute(sscreen))
    446 			return 450;
    447 		return HAVE_LLVM >= 0x0309 ? 420 :
    448 		       HAVE_LLVM >= 0x0307 ? 410 : 330;
    449 
    450 	case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
    451 		return MIN2(sscreen->b.info.max_alloc_size, INT_MAX);
    452 
    453 	case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    454 		return 0;
    455 
    456 	/* Unsupported features. */
    457 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
    458 	case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
    459 	case PIPE_CAP_USER_VERTEX_BUFFERS:
    460 	case PIPE_CAP_FAKE_SW_MSAA:
    461 	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
    462 	case PIPE_CAP_VERTEXID_NOBASE:
    463 	case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
    464 	case PIPE_CAP_TGSI_VOTE:
    465 	case PIPE_CAP_MAX_WINDOW_RECTANGLES:
    466 	case PIPE_CAP_NATIVE_FENCE_FD:
    467 	case PIPE_CAP_TGSI_FS_FBFETCH:
    468 		return 0;
    469 
    470 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
    471 		return si_have_tgsi_compute(sscreen);
    472 
    473 	case PIPE_CAP_DRAW_PARAMETERS:
    474 	case PIPE_CAP_MULTI_DRAW_INDIRECT:
    475 	case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
    476 		return sscreen->has_draw_indirect_multi;
    477 
    478 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
    479 		return 30;
    480 
    481 	case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
    482 		return PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600;
    483 
    484 	/* Stream output. */
    485 	case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
    486 		return sscreen->b.has_streamout ? 4 : 0;
    487 	case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
    488 	case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
    489 		return sscreen->b.has_streamout ? 1 : 0;
    490 	case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    491 	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
    492 		return sscreen->b.has_streamout ? 32*4 : 0;
    493 
    494 	/* Geometry shader output. */
    495 	case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
    496 		return 1024;
    497 	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
    498 		return 4095;
    499 	case PIPE_CAP_MAX_VERTEX_STREAMS:
    500 		return 4;
    501 
    502 	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
    503 		return 2048;
    504 
    505 	/* Texturing. */
    506 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
    507 	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
    508 		return 15; /* 16384 */
    509 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
    510 		/* textures support 8192, but layered rendering supports 2048 */
    511 		return 12;
    512 	case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
    513 		/* textures support 8192, but layered rendering supports 2048 */
    514 		return 2048;
    515 
    516 	/* Render targets. */
    517 	case PIPE_CAP_MAX_RENDER_TARGETS:
    518 		return 8;
    519 
    520 	case PIPE_CAP_MAX_VIEWPORTS:
    521 		return R600_MAX_VIEWPORTS;
    522 	case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
    523 		return 8;
    524 
    525 	/* Timer queries, present when the clock frequency is non zero. */
    526 	case PIPE_CAP_QUERY_TIMESTAMP:
    527 	case PIPE_CAP_QUERY_TIME_ELAPSED:
    528 		return sscreen->b.info.clock_crystal_freq != 0;
    529 
    530  	case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
    531 	case PIPE_CAP_MIN_TEXEL_OFFSET:
    532 		return -32;
    533 
    534  	case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
    535 	case PIPE_CAP_MAX_TEXEL_OFFSET:
    536 		return 31;
    537 
    538 	case PIPE_CAP_ENDIANNESS:
    539 		return PIPE_ENDIAN_LITTLE;
    540 
    541 	case PIPE_CAP_VENDOR_ID:
    542 		return ATI_VENDOR_ID;
    543 	case PIPE_CAP_DEVICE_ID:
    544 		return sscreen->b.info.pci_id;
    545 	case PIPE_CAP_ACCELERATED:
    546 		return 1;
    547 	case PIPE_CAP_VIDEO_MEMORY:
    548 		return sscreen->b.info.vram_size >> 20;
    549 	case PIPE_CAP_UMA:
    550 		return 0;
    551 	case PIPE_CAP_PCI_GROUP:
    552 		return sscreen->b.info.pci_domain;
    553 	case PIPE_CAP_PCI_BUS:
    554 		return sscreen->b.info.pci_bus;
    555 	case PIPE_CAP_PCI_DEVICE:
    556 		return sscreen->b.info.pci_dev;
    557 	case PIPE_CAP_PCI_FUNCTION:
    558 		return sscreen->b.info.pci_func;
    559 	}
    560 	return 0;
    561 }
    562 
    563 static int si_get_shader_param(struct pipe_screen* pscreen, unsigned shader, enum pipe_shader_cap param)
    564 {
    565 	struct si_screen *sscreen = (struct si_screen *)pscreen;
    566 
    567 	switch(shader)
    568 	{
    569 	case PIPE_SHADER_FRAGMENT:
    570 	case PIPE_SHADER_VERTEX:
    571 	case PIPE_SHADER_GEOMETRY:
    572 		break;
    573 	case PIPE_SHADER_TESS_CTRL:
    574 	case PIPE_SHADER_TESS_EVAL:
    575 		/* LLVM 3.6.2 is required for tessellation because of bug fixes there */
    576 		if (HAVE_LLVM == 0x0306 && MESA_LLVM_VERSION_PATCH < 2)
    577 			return 0;
    578 		break;
    579 	case PIPE_SHADER_COMPUTE:
    580 		switch (param) {
    581 		case PIPE_SHADER_CAP_PREFERRED_IR:
    582 			return PIPE_SHADER_IR_NATIVE;
    583 
    584 		case PIPE_SHADER_CAP_SUPPORTED_IRS: {
    585 			int ir = 1 << PIPE_SHADER_IR_NATIVE;
    586 
    587 			if (si_have_tgsi_compute(sscreen))
    588 				ir |= 1 << PIPE_SHADER_IR_TGSI;
    589 
    590 			return ir;
    591 		}
    592 		case PIPE_SHADER_CAP_DOUBLES:
    593 			return HAVE_LLVM >= 0x0307;
    594 
    595 		case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE: {
    596 			uint64_t max_const_buffer_size;
    597 			pscreen->get_compute_param(pscreen, PIPE_SHADER_IR_TGSI,
    598 				PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
    599 				&max_const_buffer_size);
    600 			return MIN2(max_const_buffer_size, INT_MAX);
    601 		}
    602 		default:
    603 			/* If compute shaders don't require a special value
    604 			 * for this cap, we can return the same value we
    605 			 * do for other shader types. */
    606 			break;
    607 		}
    608 		break;
    609 	default:
    610 		return 0;
    611 	}
    612 
    613 	switch (param) {
    614 	/* Shader limits. */
    615 	case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
    616 	case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
    617 	case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
    618 	case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
    619 	case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
    620 		return 16384;
    621 	case PIPE_SHADER_CAP_MAX_INPUTS:
    622 		return shader == PIPE_SHADER_VERTEX ? SI_NUM_VERTEX_BUFFERS : 32;
    623 	case PIPE_SHADER_CAP_MAX_OUTPUTS:
    624 		return shader == PIPE_SHADER_FRAGMENT ? 8 : 32;
    625 	case PIPE_SHADER_CAP_MAX_TEMPS:
    626 		return 256; /* Max native temporaries. */
    627 	case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
    628 		return 4096 * sizeof(float[4]); /* actually only memory limits this */
    629 	case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
    630 		return SI_NUM_CONST_BUFFERS;
    631 	case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
    632 	case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
    633 		return SI_NUM_SAMPLERS;
    634 	case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
    635 		return HAVE_LLVM >= 0x0309 ? SI_NUM_SHADER_BUFFERS : 0;
    636 	case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
    637 		return HAVE_LLVM >= 0x0309 ? SI_NUM_IMAGES : 0;
    638 	case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
    639 		return 32;
    640 	case PIPE_SHADER_CAP_PREFERRED_IR:
    641 		return PIPE_SHADER_IR_TGSI;
    642 	case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
    643 		return 3;
    644 
    645 	/* Supported boolean features. */
    646 	case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
    647 	case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
    648 	case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
    649 	case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
    650 	case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
    651 	case PIPE_SHADER_CAP_INTEGERS:
    652 	case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
    653 	case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
    654 		return 1;
    655 
    656 	case PIPE_SHADER_CAP_DOUBLES:
    657 		return HAVE_LLVM >= 0x0307;
    658 
    659 	case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
    660 		/* TODO: Indirection of geometry shader input dimension is not
    661 		 * handled yet
    662 		 */
    663 		return shader != PIPE_SHADER_GEOMETRY;
    664 
    665 	/* Unsupported boolean features. */
    666 	case PIPE_SHADER_CAP_MAX_PREDS:
    667 	case PIPE_SHADER_CAP_SUBROUTINES:
    668 	case PIPE_SHADER_CAP_SUPPORTED_IRS:
    669 	case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
    670 	case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
    671 		return 0;
    672 	}
    673 	return 0;
    674 }
    675 
    676 static void si_destroy_screen(struct pipe_screen* pscreen)
    677 {
    678 	struct si_screen *sscreen = (struct si_screen *)pscreen;
    679 	struct si_shader_part *parts[] = {
    680 		sscreen->vs_prologs,
    681 		sscreen->vs_epilogs,
    682 		sscreen->tcs_epilogs,
    683 		sscreen->gs_prologs,
    684 		sscreen->ps_prologs,
    685 		sscreen->ps_epilogs
    686 	};
    687 	unsigned i;
    688 
    689 	if (!sscreen)
    690 		return;
    691 
    692 	if (!sscreen->b.ws->unref(sscreen->b.ws))
    693 		return;
    694 
    695 	if (util_queue_is_initialized(&sscreen->shader_compiler_queue))
    696 		util_queue_destroy(&sscreen->shader_compiler_queue);
    697 
    698 	for (i = 0; i < ARRAY_SIZE(sscreen->tm); i++)
    699 		if (sscreen->tm[i])
    700 			LLVMDisposeTargetMachine(sscreen->tm[i]);
    701 
    702 	/* Free shader parts. */
    703 	for (i = 0; i < ARRAY_SIZE(parts); i++) {
    704 		while (parts[i]) {
    705 			struct si_shader_part *part = parts[i];
    706 
    707 			parts[i] = part->next;
    708 			radeon_shader_binary_clean(&part->binary);
    709 			FREE(part);
    710 		}
    711 	}
    712 	pipe_mutex_destroy(sscreen->shader_parts_mutex);
    713 	si_destroy_shader_cache(sscreen);
    714 	r600_destroy_common_screen(&sscreen->b);
    715 }
    716 
    717 static bool si_init_gs_info(struct si_screen *sscreen)
    718 {
    719 	switch (sscreen->b.family) {
    720 	case CHIP_OLAND:
    721 	case CHIP_HAINAN:
    722 	case CHIP_KAVERI:
    723 	case CHIP_KABINI:
    724 	case CHIP_MULLINS:
    725 	case CHIP_ICELAND:
    726 	case CHIP_CARRIZO:
    727 	case CHIP_STONEY:
    728 		sscreen->gs_table_depth = 16;
    729 		return true;
    730 	case CHIP_TAHITI:
    731 	case CHIP_PITCAIRN:
    732 	case CHIP_VERDE:
    733 	case CHIP_BONAIRE:
    734 	case CHIP_HAWAII:
    735 	case CHIP_TONGA:
    736 	case CHIP_FIJI:
    737 	case CHIP_POLARIS10:
    738 	case CHIP_POLARIS11:
    739 	case CHIP_POLARIS12:
    740 		sscreen->gs_table_depth = 32;
    741 		return true;
    742 	default:
    743 		return false;
    744 	}
    745 }
    746 
    747 static void si_handle_env_var_force_family(struct si_screen *sscreen)
    748 {
    749 	const char *family = debug_get_option("SI_FORCE_FAMILY", NULL);
    750 	unsigned i;
    751 
    752 	if (!family)
    753 		return;
    754 
    755 	for (i = CHIP_TAHITI; i < CHIP_LAST; i++) {
    756 		if (!strcmp(family, r600_get_llvm_processor_name(i))) {
    757 			/* Override family and chip_class. */
    758 			sscreen->b.family = sscreen->b.info.family = i;
    759 
    760 			if (i >= CHIP_TONGA)
    761 				sscreen->b.chip_class = sscreen->b.info.chip_class = VI;
    762 			else if (i >= CHIP_BONAIRE)
    763 				sscreen->b.chip_class = sscreen->b.info.chip_class = CIK;
    764 			else
    765 				sscreen->b.chip_class = sscreen->b.info.chip_class = SI;
    766 
    767 			/* Don't submit any IBs. */
    768 			setenv("RADEON_NOOP", "1", 1);
    769 			return;
    770 		}
    771 	}
    772 
    773 	fprintf(stderr, "radeonsi: Unknown family: %s\n", family);
    774 	exit(1);
    775 }
    776 
    777 struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws)
    778 {
    779 	struct si_screen *sscreen = CALLOC_STRUCT(si_screen);
    780 	unsigned num_cpus, num_compiler_threads, i;
    781 
    782 	if (!sscreen) {
    783 		return NULL;
    784 	}
    785 
    786 	/* Set functions first. */
    787 	sscreen->b.b.context_create = si_create_context;
    788 	sscreen->b.b.destroy = si_destroy_screen;
    789 	sscreen->b.b.get_param = si_get_param;
    790 	sscreen->b.b.get_shader_param = si_get_shader_param;
    791 	sscreen->b.b.resource_create = r600_resource_create_common;
    792 
    793 	si_init_screen_state_functions(sscreen);
    794 
    795 	if (!r600_common_screen_init(&sscreen->b, ws) ||
    796 	    !si_init_gs_info(sscreen) ||
    797 	    !si_init_shader_cache(sscreen)) {
    798 		FREE(sscreen);
    799 		return NULL;
    800 	}
    801 
    802 	si_handle_env_var_force_family(sscreen);
    803 
    804 	if (!debug_get_bool_option("RADEON_DISABLE_PERFCOUNTERS", false))
    805 		si_init_perfcounters(sscreen);
    806 
    807 	/* Hawaii has a bug with offchip buffers > 256 that can be worked
    808 	 * around by setting 4K granularity.
    809 	 */
    810 	sscreen->tess_offchip_block_dw_size =
    811 		sscreen->b.family == CHIP_HAWAII ? 4096 : 8192;
    812 
    813 	sscreen->has_distributed_tess =
    814 		sscreen->b.chip_class >= VI &&
    815 		sscreen->b.info.max_se >= 2;
    816 
    817 	sscreen->has_draw_indirect_multi =
    818 		(sscreen->b.family >= CHIP_POLARIS10) ||
    819 		(sscreen->b.chip_class == VI &&
    820 		 sscreen->b.info.pfp_fw_version >= 121 &&
    821 		 sscreen->b.info.me_fw_version >= 87) ||
    822 		(sscreen->b.chip_class == CIK &&
    823 		 sscreen->b.info.pfp_fw_version >= 211 &&
    824 		 sscreen->b.info.me_fw_version >= 173) ||
    825 		(sscreen->b.chip_class == SI &&
    826 		 sscreen->b.info.pfp_fw_version >= 121 &&
    827 		 sscreen->b.info.me_fw_version >= 87);
    828 
    829 	sscreen->has_ds_bpermute = HAVE_LLVM >= 0x0309 &&
    830 				   sscreen->b.chip_class >= VI;
    831 
    832 	sscreen->b.has_cp_dma = true;
    833 	sscreen->b.has_streamout = true;
    834 	pipe_mutex_init(sscreen->shader_parts_mutex);
    835 	sscreen->use_monolithic_shaders =
    836 		HAVE_LLVM < 0x0308 ||
    837 		(sscreen->b.debug_flags & DBG_MONOLITHIC_SHADERS) != 0;
    838 
    839 	sscreen->b.barrier_flags.cp_to_L2 = SI_CONTEXT_INV_SMEM_L1 |
    840 					    SI_CONTEXT_INV_VMEM_L1 |
    841 					    SI_CONTEXT_INV_GLOBAL_L2;
    842 	sscreen->b.barrier_flags.compute_to_L2 = SI_CONTEXT_CS_PARTIAL_FLUSH;
    843 
    844 	if (debug_get_bool_option("RADEON_DUMP_SHADERS", false))
    845 		sscreen->b.debug_flags |= DBG_FS | DBG_VS | DBG_GS | DBG_PS | DBG_CS;
    846 
    847 	/* Only enable as many threads as we have target machines and CPUs. */
    848 	num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
    849 	num_compiler_threads = MIN2(num_cpus, ARRAY_SIZE(sscreen->tm));
    850 
    851 	for (i = 0; i < num_compiler_threads; i++)
    852 		sscreen->tm[i] = si_create_llvm_target_machine(sscreen);
    853 
    854 	util_queue_init(&sscreen->shader_compiler_queue, "si_shader",
    855                         32, num_compiler_threads);
    856 
    857 	/* Create the auxiliary context. This must be done last. */
    858 	sscreen->b.aux_context = sscreen->b.b.context_create(&sscreen->b.b, NULL, 0);
    859 
    860 	if (sscreen->b.debug_flags & DBG_TEST_DMA)
    861 		r600_test_dma(&sscreen->b);
    862 
    863 	return &sscreen->b.b;
    864 }
    865