path: root/src/gallium/drivers/radeonsi/si_pipe.c

/*
 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include "si_pipe.h"
#include "si_public.h"
#include "si_shader_internal.h"
#include "sid.h"

#include "radeon/radeon_uvd.h"
#include "util/hash_table.h"
#include "util/u_log.h"
#include "util/u_memory.h"
#include "util/u_suballoc.h"
#include "util/u_tests.h"
#include "util/xmlconfig.h"
#include "vl/vl_decoder.h"
#include "../ddebug/dd_util.h"

#include "compiler/nir/nir.h"

/*
 * pipe_context
 */
static void si_destroy_context(struct pipe_context *context)
{
	struct si_context *sctx = (struct si_context *)context;
	int i;

	/* Unreference the framebuffer normally to disable related logic
	 * properly.
	 */
	struct pipe_framebuffer_state fb = {};
	if (context->set_framebuffer_state)
		context->set_framebuffer_state(context, &fb);

	si_release_all_descriptors(sctx);

	pipe_resource_reference(&sctx->esgs_ring, NULL);
	pipe_resource_reference(&sctx->gsvs_ring, NULL);
	pipe_resource_reference(&sctx->tf_ring, NULL);
	pipe_resource_reference(&sctx->tess_offchip_ring, NULL);
	pipe_resource_reference(&sctx->null_const_buf.buffer, NULL);
	r600_resource_reference(&sctx->border_color_buffer, NULL);
	free(sctx->border_color_table);
	r600_resource_reference(&sctx->scratch_buffer, NULL);
	r600_resource_reference(&sctx->compute_scratch_buffer, NULL);
	r600_resource_reference(&sctx->wait_mem_scratch, NULL);

	si_pm4_free_state(sctx, sctx->init_config, ~0);
	if (sctx->init_config_gs_rings)
		si_pm4_free_state(sctx, sctx->init_config_gs_rings, ~0);
	for (i = 0; i < ARRAY_SIZE(sctx->vgt_shader_config); i++)
		si_pm4_delete_state(sctx, vgt_shader_config, sctx->vgt_shader_config[i]);

	if (sctx->fixed_func_tcs_shader.cso)
		sctx->b.b.delete_tcs_state(&sctx->b.b, sctx->fixed_func_tcs_shader.cso);
	if (sctx->custom_dsa_flush)
		sctx->b.b.delete_depth_stencil_alpha_state(&sctx->b.b, sctx->custom_dsa_flush);
	if (sctx->custom_blend_resolve)
		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_resolve);
	if (sctx->custom_blend_fmask_decompress)
		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_fmask_decompress);
	if (sctx->custom_blend_eliminate_fastclear)
		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_eliminate_fastclear);
	if (sctx->custom_blend_dcc_decompress)
		sctx->b.b.delete_blend_state(&sctx->b.b, sctx->custom_blend_dcc_decompress);

	if (sctx->blitter)
		util_blitter_destroy(sctx->blitter);

	r600_common_context_cleanup(&sctx->b);

	LLVMDisposeTargetMachine(sctx->tm);

	si_saved_cs_reference(&sctx->current_saved_cs, NULL);

	_mesa_hash_table_destroy(sctx->tex_handles, NULL);
	_mesa_hash_table_destroy(sctx->img_handles, NULL);

	util_dynarray_fini(&sctx->resident_tex_handles);
	util_dynarray_fini(&sctx->resident_img_handles);
	util_dynarray_fini(&sctx->resident_tex_needs_color_decompress);
	util_dynarray_fini(&sctx->resident_img_needs_color_decompress);
	util_dynarray_fini(&sctx->resident_tex_needs_depth_decompress);
	FREE(sctx);
}

static enum pipe_reset_status
si_amdgpu_get_reset_status(struct pipe_context *ctx)
{
	struct si_context *sctx = (struct si_context *)ctx;

	return sctx->b.ws->ctx_query_reset_status(sctx->b.ctx);
}

/* Apitrace profiling:
 *   1) qapitrace : Tools -> Profile: Measure CPU & GPU times
 *   2) In the middle panel, zoom in (mouse wheel) on some bad draw call
 *      and remember its number.
 *   3) In Mesa, enable queries and performance counters around that draw
 *      call and print the results.
 *   4) glretrace --benchmark --markers ..
 */
static void si_emit_string_marker(struct pipe_context *ctx,
				  const char *string, int len)
{
	struct si_context *sctx = (struct si_context *)ctx;

	dd_parse_apitrace_marker(string, len, &sctx->apitrace_call_number);

	if (sctx->b.log)
		u_log_printf(sctx->b.log, "\nString marker: %*s\n", len, string);
}

static LLVMTargetMachineRef
si_create_llvm_target_machine(struct si_screen *sscreen)
{
	const char *triple = "amdgcn--";
	char features[256];

	snprintf(features, sizeof(features),
		 "+DumpCode,+vgpr-spilling,-fp32-denormals,+fp64-denormals%s%s%s",
		 sscreen->b.chip_class >= GFX9 ? ",+xnack" : ",-xnack",
		 sscreen->llvm_has_working_vgpr_indexing ? "" : ",-promote-alloca",
		 sscreen->b.debug_flags & DBG_SI_SCHED ? ",+si-scheduler" : "");

	return LLVMCreateTargetMachine(ac_get_llvm_target(triple), triple,
				       r600_get_llvm_processor_name(sscreen->b.family),
				       features,
				       LLVMCodeGenLevelDefault,
				       LLVMRelocDefault,
				       LLVMCodeModelDefault);
}

static void si_set_log_context(struct pipe_context *ctx,
			       struct u_log_context *log)
{
	struct si_context *sctx = (struct si_context *)ctx;
	sctx->b.log = log;

	if (log)
		u_log_add_auto_logger(log, si_auto_log_cs, sctx);
}

static struct pipe_context *si_create_context(struct pipe_screen *screen,
                                              unsigned flags)
{
	struct si_context *sctx = CALLOC_STRUCT(si_context);
	struct si_screen* sscreen = (struct si_screen *)screen;
	struct radeon_winsys *ws = sscreen->b.ws;
	int shader, i;

	if (!sctx)
		return NULL;

	if (flags & PIPE_CONTEXT_DEBUG)
		sscreen->record_llvm_ir = true; /* racy but not critical */

	sctx->b.b.screen = screen; /* this must be set first */
	sctx->b.b.priv = NULL;
	sctx->b.b.destroy = si_destroy_context;
	sctx->b.b.emit_string_marker = si_emit_string_marker;
	sctx->b.b.set_log_context = si_set_log_context;
	sctx->b.set_atom_dirty = (void *)si_set_atom_dirty;
	sctx->screen = sscreen; /* Easy accessing of screen/winsys. */
	sctx->is_debug = (flags & PIPE_CONTEXT_DEBUG) != 0;

	if (!r600_common_context_init(&sctx->b, &sscreen->b, flags))
		goto fail;

	if (sscreen->b.info.drm_major == 3)
		sctx->b.b.get_device_reset_status = si_amdgpu_get_reset_status;

	si_init_blit_functions(sctx);
	si_init_compute_functions(sctx);
	si_init_cp_dma_functions(sctx);
	si_init_debug_functions(sctx);

	if (sscreen->b.info.has_hw_decode) {
		sctx->b.b.create_video_codec = si_uvd_create_decoder;
		sctx->b.b.create_video_buffer = si_video_buffer_create;
	} else {
		sctx->b.b.create_video_codec = vl_create_decoder;
		sctx->b.b.create_video_buffer = vl_video_buffer_create;
	}

	sctx->b.gfx.cs = ws->cs_create(sctx->b.ctx, RING_GFX,
				       si_context_gfx_flush, sctx);
	sctx->b.gfx.flush = si_context_gfx_flush;

	/* Border colors. */
	sctx->border_color_table = malloc(SI_MAX_BORDER_COLORS *
					  sizeof(*sctx->border_color_table));
	if (!sctx->border_color_table)
		goto fail;

	sctx->border_color_buffer = (struct r600_resource*)
		pipe_buffer_create(screen, 0, PIPE_USAGE_DEFAULT,
				   SI_MAX_BORDER_COLORS *
				   sizeof(*sctx->border_color_table));
	if (!sctx->border_color_buffer)
		goto fail;

	sctx->border_color_map =
		ws->buffer_map(sctx->border_color_buffer->buf,
			       NULL, PIPE_TRANSFER_WRITE);
	if (!sctx->border_color_map)
		goto fail;

	si_init_all_descriptors(sctx);
	si_init_state_functions(sctx);
	si_init_shader_functions(sctx);
	si_init_ia_multi_vgt_param_table(sctx);

	if (sctx->b.chip_class >= CIK)
		cik_init_sdma_functions(sctx);
	else
		si_init_dma_functions(sctx);

	if (sscreen->b.debug_flags & DBG_FORCE_DMA)
		sctx->b.b.resource_copy_region = sctx->b.dma_copy;

	sctx->blitter = util_blitter_create(&sctx->b.b);
	if (sctx->blitter == NULL)
		goto fail;
	sctx->blitter->draw_rectangle = r600_draw_rectangle;

	sctx->sample_mask.sample_mask = 0xffff;

	/* these must be last */
	si_begin_new_cs(sctx);

	if (sctx->b.chip_class >= GFX9) {
		sctx->wait_mem_scratch = (struct r600_resource*)
			pipe_buffer_create(screen, 0, PIPE_USAGE_DEFAULT, 4);
		if (!sctx->wait_mem_scratch)
			goto fail;

		/* Initialize the memory. */
		struct radeon_winsys_cs *cs = sctx->b.gfx.cs;
		radeon_emit(cs, PKT3(PKT3_WRITE_DATA, 3, 0));
		radeon_emit(cs, S_370_DST_SEL(V_370_MEMORY_SYNC) |
			    S_370_WR_CONFIRM(1) |
			    S_370_ENGINE_SEL(V_370_ME));
		radeon_emit(cs, sctx->wait_mem_scratch->gpu_address);
		radeon_emit(cs, sctx->wait_mem_scratch->gpu_address >> 32);
		radeon_emit(cs, sctx->wait_mem_number);
	}

	/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD doesn't skip loads
	 * if NUM_RECORDS == 0). We need to use a dummy buffer instead. */
	if (sctx->b.chip_class == CIK) {
		sctx->null_const_buf.buffer =
			r600_aligned_buffer_create(screen,
						   R600_RESOURCE_FLAG_UNMAPPABLE,
						   PIPE_USAGE_DEFAULT, 16,
						   sctx->screen->b.info.tcc_cache_line_size);
		if (!sctx->null_const_buf.buffer)
			goto fail;
		sctx->null_const_buf.buffer_size = sctx->null_const_buf.buffer->width0;

		for (shader = 0; shader < SI_NUM_SHADERS; shader++) {
			for (i = 0; i < SI_NUM_CONST_BUFFERS; i++) {
				sctx->b.b.set_constant_buffer(&sctx->b.b, shader, i,
							      &sctx->null_const_buf);
			}
		}

		si_set_rw_buffer(sctx, SI_HS_CONST_DEFAULT_TESS_LEVELS,
				 &sctx->null_const_buf);
		si_set_rw_buffer(sctx, SI_VS_CONST_INSTANCE_DIVISORS,
				 &sctx->null_const_buf);
		si_set_rw_buffer(sctx, SI_VS_CONST_CLIP_PLANES,
				 &sctx->null_const_buf);
		si_set_rw_buffer(sctx, SI_PS_CONST_POLY_STIPPLE,
				 &sctx->null_const_buf);
		si_set_rw_buffer(sctx, SI_PS_CONST_SAMPLE_POSITIONS,
				 &sctx->null_const_buf);

		/* Clear the NULL constant buffer, because loads should return zeros. */
		sctx->b.clear_buffer(&sctx->b.b, sctx->null_const_buf.buffer, 0,
				     sctx->null_const_buf.buffer->width0, 0,
				     R600_COHERENCY_SHADER);
	}

	uint64_t max_threads_per_block;
	screen->get_compute_param(screen, PIPE_SHADER_IR_TGSI,
				  PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK,
				  &max_threads_per_block);

	/* The maximum number of scratch waves. Scratch space isn't divided
	 * evenly between CUs. The number is only a function of the number of CUs.
	 * We can decrease the constant to decrease the scratch buffer size.
	 *
	 * sctx->scratch_waves must be >= the maximum posible size of
	 * 1 threadgroup, so that the hw doesn't hang from being unable
	 * to start any.
	 *
	 * The recommended value is 4 per CU at most. Higher numbers don't
	 * bring much benefit, but they still occupy chip resources (think
	 * async compute). I've seen ~2% performance difference between 4 and 32.
	 */
	sctx->scratch_waves = MAX2(32 * sscreen->b.info.num_good_compute_units,
				   max_threads_per_block / 64);

	sctx->tm = si_create_llvm_target_machine(sscreen);

	/* Bindless handles. */
	sctx->tex_handles = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
						    _mesa_key_pointer_equal);
	sctx->img_handles = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
						    _mesa_key_pointer_equal);

	util_dynarray_init(&sctx->resident_tex_handles, NULL);
	util_dynarray_init(&sctx->resident_img_handles, NULL);
	util_dynarray_init(&sctx->resident_tex_needs_color_decompress, NULL);
	util_dynarray_init(&sctx->resident_img_needs_color_decompress, NULL);
	util_dynarray_init(&sctx->resident_tex_needs_depth_decompress, NULL);

	return &sctx->b.b;
fail:
	fprintf(stderr, "radeonsi: Failed to create a context.\n");
	si_destroy_context(&sctx->b.b);
	return NULL;
}

static struct pipe_context *si_pipe_create_context(struct pipe_screen *screen,
						   void *priv, unsigned flags)
{
	struct si_screen *sscreen = (struct si_screen *)screen;
	struct pipe_context *ctx;

	if (sscreen->b.debug_flags & DBG_CHECK_VM)
		flags |= PIPE_CONTEXT_DEBUG;

	ctx = si_create_context(screen, flags);

	if (!(flags & PIPE_CONTEXT_PREFER_THREADED))
		return ctx;

	/* Clover (compute-only) is unsupported.
	 *
	 * Since the threaded context creates shader states from the non-driver
	 * thread, asynchronous compilation is required for create_{shader}_-
	 * state not to use pipe_context. Debug contexts (ddebug) disable
	 * asynchronous compilation, so don't use the threaded context with
	 * those.
	 */
	if (flags & (PIPE_CONTEXT_COMPUTE_ONLY | PIPE_CONTEXT_DEBUG))
		return ctx;

	/* When shaders are logged to stderr, asynchronous compilation is
	 * disabled too. */
	if (sscreen->b.debug_flags & DBG_ALL_SHADERS)
		return ctx;

	return threaded_context_create(ctx, &sscreen->b.pool_transfers,
				       r600_replace_buffer_storage,
				       &((struct si_context*)ctx)->b.tc);
}

/*
 * pipe_screen
 */
static bool si_have_tgsi_compute(struct si_screen *sscreen)
{
	/* Old kernels disallowed some register writes for SI
	 * that are used for indirect dispatches. */
	return (sscreen->b.chip_class >= CIK ||
		sscreen->b.info.drm_major == 3 ||
		(sscreen->b.info.drm_major == 2 &&
		 sscreen->b.info.drm_minor >= 45));
}

static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
{
	struct si_screen *sscreen = (struct si_screen *)pscreen;

	switch (param) {
	/* Supported features (boolean caps). */
	case PIPE_CAP_ACCELERATED:
	case PIPE_CAP_TWO_SIDED_STENCIL:
	case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
	case PIPE_CAP_ANISOTROPIC_FILTER:
	case PIPE_CAP_POINT_SPRITE:
	case PIPE_CAP_OCCLUSION_QUERY:
	case PIPE_CAP_TEXTURE_SHADOW_MAP:
	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
	case PIPE_CAP_BLEND_EQUATION_SEPARATE:
	case PIPE_CAP_TEXTURE_SWIZZLE:
	case PIPE_CAP_DEPTH_CLIP_DISABLE:
	case PIPE_CAP_SHADER_STENCIL_EXPORT:
	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
	case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
	case PIPE_CAP_SM3:
	case PIPE_CAP_SEAMLESS_CUBE_MAP:
	case PIPE_CAP_PRIMITIVE_RESTART:
	case PIPE_CAP_CONDITIONAL_RENDER:
	case PIPE_CAP_TEXTURE_BARRIER:
	case PIPE_CAP_INDEP_BLEND_ENABLE:
	case PIPE_CAP_INDEP_BLEND_FUNC:
	case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
	case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
	case PIPE_CAP_USER_CONSTANT_BUFFERS:
	case PIPE_CAP_START_INSTANCE:
	case PIPE_CAP_NPOT_TEXTURES:
	case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
	case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
	case PIPE_CAP_VERTEX_COLOR_CLAMPED:
	case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
        case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
	case PIPE_CAP_TGSI_INSTANCEID:
	case PIPE_CAP_COMPUTE:
	case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
        case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
	case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
	case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
	case PIPE_CAP_CUBE_MAP_ARRAY:
	case PIPE_CAP_SAMPLE_SHADING:
	case PIPE_CAP_DRAW_INDIRECT:
	case PIPE_CAP_CLIP_HALFZ:
	case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
	case PIPE_CAP_POLYGON_OFFSET_CLAMP:
	case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
	case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
	case PIPE_CAP_TGSI_TEXCOORD:
	case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
	case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
	case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
	case PIPE_CAP_SHAREABLE_SHADERS:
	case PIPE_CAP_DEPTH_BOUNDS_TEST:
	case PIPE_CAP_SAMPLER_VIEW_TARGET:
	case PIPE_CAP_TEXTURE_QUERY_LOD:
	case PIPE_CAP_TEXTURE_GATHER_SM5:
	case PIPE_CAP_TGSI_TXQS:
	case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
	case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
	case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
	case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
	case PIPE_CAP_INVALIDATE_BUFFER:
	case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
	case PIPE_CAP_QUERY_MEMORY_INFO:
	case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
	case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
	case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
	case PIPE_CAP_GENERATE_MIPMAP:
	case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
	case PIPE_CAP_STRING_MARKER:
	case PIPE_CAP_CLEAR_TEXTURE:
	case PIPE_CAP_CULL_DISTANCE:
	case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
	case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
	case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
	case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
	case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
	case PIPE_CAP_DOUBLES:
	case PIPE_CAP_TGSI_TEX_TXF_LZ:
	case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
	case PIPE_CAP_BINDLESS_TEXTURE:
	case PIPE_CAP_QUERY_TIMESTAMP:
	case PIPE_CAP_QUERY_TIME_ELAPSED:
	case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
	case PIPE_CAP_QUERY_SO_OVERFLOW:
	case PIPE_CAP_MEMOBJ:
		return 1;

	case PIPE_CAP_INT64:
	case PIPE_CAP_INT64_DIVMOD:
	case PIPE_CAP_TGSI_CLOCK:
	case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
	case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
		return 1;

	case PIPE_CAP_TGSI_VOTE:
		return HAVE_LLVM >= 0x0400;

	case PIPE_CAP_TGSI_BALLOT:
		return HAVE_LLVM >= 0x0500;

	case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
		return !SI_BIG_ENDIAN && sscreen->b.info.has_userptr;

	case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
		return (sscreen->b.info.drm_major == 2 &&
			sscreen->b.info.drm_minor >= 43) ||
		       sscreen->b.info.drm_major == 3;

	case PIPE_CAP_TEXTURE_MULTISAMPLE:
		/* 2D tiling on CIK is supported since DRM 2.35.0 */
		return sscreen->b.chip_class < CIK ||
		       (sscreen->b.info.drm_major == 2 &&
			sscreen->b.info.drm_minor >= 35) ||
		       sscreen->b.info.drm_major == 3;

        case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
                return R600_MAP_BUFFER_ALIGNMENT;

	case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
	case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
	case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
	case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
	case PIPE_CAP_MAX_VERTEX_STREAMS:
	case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
		return 4;

	case PIPE_CAP_GLSL_FEATURE_LEVEL:
		if (sscreen->b.debug_flags & DBG_NIR)
			return 140; /* no geometry and tessellation shaders yet */
		if (si_have_tgsi_compute(sscreen))
			return 450;
		return 420;

	case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
		return MIN2(sscreen->b.info.max_alloc_size, INT_MAX);

	case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
	case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
	case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
		/* SI doesn't support unaligned loads.
		 * CIK needs DRM 2.50.0 on radeon. */
		return sscreen->b.chip_class == SI ||
		       (sscreen->b.info.drm_major == 2 &&
			sscreen->b.info.drm_minor < 50);

	case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
		/* TODO: GFX9 hangs. */
		if (sscreen->b.chip_class >= GFX9)
			return 0;
		/* Disable on SI due to VM faults in CP DMA. Enable once these
		 * faults are mitigated in software.
		 */
		if (sscreen->b.chip_class >= CIK &&
		    sscreen->b.info.drm_major == 3 &&
		    sscreen->b.info.drm_minor >= 13)
			return RADEON_SPARSE_PAGE_SIZE;
		return 0;

	/* Unsupported features. */
	case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
	case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
	case PIPE_CAP_USER_VERTEX_BUFFERS:
	case PIPE_CAP_FAKE_SW_MSAA:
	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
	case PIPE_CAP_VERTEXID_NOBASE:
	case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
	case PIPE_CAP_MAX_WINDOW_RECTANGLES:
	case PIPE_CAP_NATIVE_FENCE_FD:
	case PIPE_CAP_TGSI_FS_FBFETCH:
	case PIPE_CAP_TGSI_MUL_ZERO_WINS:
	case PIPE_CAP_UMA:
	case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
	case PIPE_CAP_POST_DEPTH_COVERAGE:
		return 0;

	case PIPE_CAP_QUERY_BUFFER_OBJECT:
		return si_have_tgsi_compute(sscreen);

	case PIPE_CAP_DRAW_PARAMETERS:
	case PIPE_CAP_MULTI_DRAW_INDIRECT:
	case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
		return sscreen->has_draw_indirect_multi;

	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
		return 30;

	case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
		return sscreen->b.chip_class <= VI ?
			PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600 : 0;

	/* Stream output. */
	case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
		return 32*4;

	/* Geometry shader output. */
	case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
		return 1024;
	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
		return 4095;

	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
		return 2048;

	/* Texturing. */
	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
		return 15; /* 16384 */
	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
		/* textures support 8192, but layered rendering supports 2048 */
		return 12;
	case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
		/* textures support 8192, but layered rendering supports 2048 */
		return 2048;

	/* Viewports and render targets. */
	case PIPE_CAP_MAX_VIEWPORTS:
		return R600_MAX_VIEWPORTS;
	case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
	case PIPE_CAP_MAX_RENDER_TARGETS:
		return 8;

 	case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
	case PIPE_CAP_MIN_TEXEL_OFFSET:
		return -32;

 	case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
	case PIPE_CAP_MAX_TEXEL_OFFSET:
		return 31;

	case PIPE_CAP_ENDIANNESS:
		return PIPE_ENDIAN_LITTLE;

	case PIPE_CAP_VENDOR_ID:
		return ATI_VENDOR_ID;
	case PIPE_CAP_DEVICE_ID:
		return sscreen->b.info.pci_id;
	case PIPE_CAP_VIDEO_MEMORY:
		return sscreen->b.info.vram_size >> 20;
	case PIPE_CAP_PCI_GROUP:
		return sscreen->b.info.pci_domain;
	case PIPE_CAP_PCI_BUS:
		return sscreen->b.info.pci_bus;
	case PIPE_CAP_PCI_DEVICE:
		return sscreen->b.info.pci_dev;
	case PIPE_CAP_PCI_FUNCTION:
		return sscreen->b.info.pci_func;
	}
	return 0;
}

static int si_get_shader_param(struct pipe_screen* pscreen,
			       enum pipe_shader_type shader,
			       enum pipe_shader_cap param)
{
	struct si_screen *sscreen = (struct si_screen *)pscreen;

	switch(shader)
	{
	case PIPE_SHADER_FRAGMENT:
	case PIPE_SHADER_VERTEX:
	case PIPE_SHADER_GEOMETRY:
	case PIPE_SHADER_TESS_CTRL:
	case PIPE_SHADER_TESS_EVAL:
		break;
	case PIPE_SHADER_COMPUTE:
		switch (param) {
		case PIPE_SHADER_CAP_PREFERRED_IR:
			return PIPE_SHADER_IR_NATIVE;

		case PIPE_SHADER_CAP_SUPPORTED_IRS: {
			int ir = 1 << PIPE_SHADER_IR_NATIVE;

			if (si_have_tgsi_compute(sscreen))
				ir |= 1 << PIPE_SHADER_IR_TGSI;

			return ir;
		}

		case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE: {
			uint64_t max_const_buffer_size;
			pscreen->get_compute_param(pscreen, PIPE_SHADER_IR_TGSI,
				PIPE_COMPUTE_CAP_MAX_MEM_ALLOC_SIZE,
				&max_const_buffer_size);
			return MIN2(max_const_buffer_size, INT_MAX);
		}
		default:
			/* If compute shaders don't require a special value
			 * for this cap, we can return the same value we
			 * do for other shader types. */
			break;
		}
		break;
	default:
		return 0;
	}

	switch (param) {
	/* Shader limits. */
	case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
	case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
	case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
	case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
	case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
		return 16384;
	case PIPE_SHADER_CAP_MAX_INPUTS:
		return shader == PIPE_SHADER_VERTEX ? SI_MAX_ATTRIBS : 32;
	case PIPE_SHADER_CAP_MAX_OUTPUTS:
		return shader == PIPE_SHADER_FRAGMENT ? 8 : 32;
	case PIPE_SHADER_CAP_MAX_TEMPS:
		return 256; /* Max native temporaries. */
	case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
		return 4096 * sizeof(float[4]); /* actually only memory limits this */
	case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
		return SI_NUM_CONST_BUFFERS;
	case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
	case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
		return SI_NUM_SAMPLERS;
	case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
		return SI_NUM_SHADER_BUFFERS;
	case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
		return SI_NUM_IMAGES;
	case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
		return 32;
	case PIPE_SHADER_CAP_PREFERRED_IR:
		if (sscreen->b.debug_flags & DBG_NIR &&
		    (shader == PIPE_SHADER_VERTEX ||
		     shader == PIPE_SHADER_FRAGMENT))
			return PIPE_SHADER_IR_NIR;
		return PIPE_SHADER_IR_TGSI;
	case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
		return 4;

	/* Supported boolean features. */
	case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
	case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
	case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
	case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
	case PIPE_SHADER_CAP_INTEGERS:
	case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
	case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
	case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
	case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
		return 1;

	case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
		/* TODO: Indirect indexing of GS inputs is unimplemented. */
		return shader != PIPE_SHADER_GEOMETRY &&
		       (sscreen->llvm_has_working_vgpr_indexing ||
			/* TCS and TES load inputs directly from LDS or
			 * offchip memory, so indirect indexing is trivial. */
			shader == PIPE_SHADER_TESS_CTRL ||
			shader == PIPE_SHADER_TESS_EVAL);

	case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
		return sscreen->llvm_has_working_vgpr_indexing ||
		       /* TCS stores outputs directly to memory. */
		       shader == PIPE_SHADER_TESS_CTRL;

	/* Unsupported boolean features. */
	case PIPE_SHADER_CAP_SUBROUTINES:
	case PIPE_SHADER_CAP_SUPPORTED_IRS:
	case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
		return 0;
	}
	return 0;
}

static const struct nir_shader_compiler_options nir_options = {
	.vertex_id_zero_based = true,
	.lower_scmp = true,
	.lower_flrp32 = true,
	.lower_fsat = true,
	.lower_fdiv = true,
	.lower_sub = true,
	.lower_pack_snorm_2x16 = true,
	.lower_pack_snorm_4x8 = true,
	.lower_pack_unorm_2x16 = true,
	.lower_pack_unorm_4x8 = true,
	.lower_unpack_snorm_2x16 = true,
	.lower_unpack_snorm_4x8 = true,
	.lower_unpack_unorm_2x16 = true,
	.lower_unpack_unorm_4x8 = true,
	.lower_extract_byte = true,
	.lower_extract_word = true,
	.max_unroll_iterations = 32,
	.native_integers = true,
};

static const void *
si_get_compiler_options(struct pipe_screen *screen,
			enum pipe_shader_ir ir,
			enum pipe_shader_type shader)
{
	assert(ir == PIPE_SHADER_IR_NIR);
	return &nir_options;
}

static void si_destroy_screen(struct pipe_screen* pscreen)
{
	struct si_screen *sscreen = (struct si_screen *)pscreen;
	struct si_shader_part *parts[] = {
		sscreen->vs_prologs,
		sscreen->tcs_epilogs,
		sscreen->gs_prologs,
		sscreen->ps_prologs,
		sscreen->ps_epilogs
	};
	unsigned i;

	if (!sscreen->b.ws->unref(sscreen->b.ws))
		return;

	util_queue_destroy(&sscreen->shader_compiler_queue);
	util_queue_destroy(&sscreen->shader_compiler_queue_low_priority);

	for (i = 0; i < ARRAY_SIZE(sscreen->tm); i++)
		if (sscreen->tm[i])
			LLVMDisposeTargetMachine(sscreen->tm[i]);

	for (i = 0; i < ARRAY_SIZE(sscreen->tm_low_priority); i++)
		if (sscreen->tm_low_priority[i])
			LLVMDisposeTargetMachine(sscreen->tm_low_priority[i]);

	/* Free shader parts. */
	for (i = 0; i < ARRAY_SIZE(parts); i++) {
		while (parts[i]) {
			struct si_shader_part *part = parts[i];

			parts[i] = part->next;
			radeon_shader_binary_clean(&part->binary);
			FREE(part);
		}
	}
	mtx_destroy(&sscreen->shader_parts_mutex);
	si_destroy_shader_cache(sscreen);
	r600_destroy_common_screen(&sscreen->b);
}

static bool si_init_gs_info(struct si_screen *sscreen)
{
	switch (sscreen->b.family) {
	case CHIP_OLAND:
	case CHIP_HAINAN:
	case CHIP_KAVERI:
	case CHIP_KABINI:
	case CHIP_MULLINS:
	case CHIP_ICELAND:
	case CHIP_CARRIZO:
	case CHIP_STONEY:
		sscreen->gs_table_depth = 16;
		return true;
	case CHIP_TAHITI:
	case CHIP_PITCAIRN:
	case CHIP_VERDE:
	case CHIP_BONAIRE:
	case CHIP_HAWAII:
	case CHIP_TONGA:
	case CHIP_FIJI:
	case CHIP_POLARIS10:
	case CHIP_POLARIS11:
	case CHIP_POLARIS12:
	case CHIP_VEGA10:
	case CHIP_RAVEN:
		sscreen->gs_table_depth = 32;
		return true;
	default:
		return false;
	}
}

static void si_handle_env_var_force_family(struct si_screen *sscreen)
{
	const char *family = debug_get_option("SI_FORCE_FAMILY", NULL);
	unsigned i;

	if (!family)
		return;

	for (i = CHIP_TAHITI; i < CHIP_LAST; i++) {
		if (!strcmp(family, r600_get_llvm_processor_name(i))) {
			/* Override family and chip_class. */
			sscreen->b.family = sscreen->b.info.family = i;

			if (i >= CHIP_VEGA10)
				sscreen->b.chip_class = sscreen->b.info.chip_class = GFX9;
			else if (i >= CHIP_TONGA)
				sscreen->b.chip_class = sscreen->b.info.chip_class = VI;
			else if (i >= CHIP_BONAIRE)
				sscreen->b.chip_class = sscreen->b.info.chip_class = CIK;
			else
				sscreen->b.chip_class = sscreen->b.info.chip_class = SI;

			/* Don't submit any IBs. */
			setenv("RADEON_NOOP", "1", 1);
			return;
		}
	}

	fprintf(stderr, "radeonsi: Unknown family: %s\n", family);
	exit(1);
}

static void si_test_vmfault(struct si_screen *sscreen)
{
	struct pipe_context *ctx = sscreen->b.aux_context;
	struct si_context *sctx = (struct si_context *)ctx;
	struct pipe_resource *buf =
		pipe_buffer_create(&sscreen->b.b, 0, PIPE_USAGE_DEFAULT, 64);

	if (!buf) {
		puts("Buffer allocation failed.");
		exit(1);
	}

	r600_resource(buf)->gpu_address = 0; /* cause a VM fault */

	if (sscreen->b.debug_flags & DBG_TEST_VMFAULT_CP) {
		si_copy_buffer(sctx, buf, buf, 0, 4, 4, 0);
		ctx->flush(ctx, NULL, 0);
		puts("VM fault test: CP - done.");
	}
	if (sscreen->b.debug_flags & DBG_TEST_VMFAULT_SDMA) {
		sctx->b.dma_clear_buffer(ctx, buf, 0, 4, 0);
		ctx->flush(ctx, NULL, 0);
		puts("VM fault test: SDMA - done.");
	}
	if (sscreen->b.debug_flags & DBG_TEST_VMFAULT_SHADER) {
		util_test_constant_buffer(ctx, buf);
		puts("VM fault test: Shader - done.");
	}
	exit(0);
}

static void radeonsi_get_driver_uuid(struct pipe_screen *pscreen, char *uuid)
{
	ac_compute_driver_uuid(uuid, PIPE_UUID_SIZE);
}

static void radeonsi_get_device_uuid(struct pipe_screen *pscreen, char *uuid)
{
	struct r600_common_screen *rscreen = (struct r600_common_screen *)pscreen;

	ac_compute_device_uuid(&rscreen->info, uuid, PIPE_UUID_SIZE);
}

struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
					   const struct pipe_screen_config *config)
{
	struct si_screen *sscreen = CALLOC_STRUCT(si_screen);
	unsigned num_threads, num_compiler_threads, num_compiler_threads_lowprio, i;

	if (!sscreen) {
		return NULL;
	}

	/* Set functions first. */
	sscreen->b.b.context_create = si_pipe_create_context;
	sscreen->b.b.destroy = si_destroy_screen;
	sscreen->b.b.get_param = si_get_param;
	sscreen->b.b.get_shader_param = si_get_shader_param;
	sscreen->b.b.get_compiler_options = si_get_compiler_options;
	sscreen->b.b.get_device_uuid = radeonsi_get_device_uuid;
	sscreen->b.b.get_driver_uuid = radeonsi_get_driver_uuid;
	sscreen->b.b.resource_create = r600_resource_create_common;

	si_init_screen_state_functions(sscreen);

	/* Set these flags in debug_flags early, so that the shader cache takes
	 * them into account.
	 */
	if (driQueryOptionb(config->options,
			    "glsl_correct_derivatives_after_discard"))
		sscreen->b.debug_flags |= DBG_FS_CORRECT_DERIVS_AFTER_KILL;
	if (driQueryOptionb(config->options, "radeonsi_enable_sisched"))
		sscreen->b.debug_flags |= DBG_SI_SCHED;

	if (!r600_common_screen_init(&sscreen->b, ws) ||
	    !si_init_gs_info(sscreen) ||
	    !si_init_shader_cache(sscreen)) {
		FREE(sscreen);
		return NULL;
	}

	/* Only enable as many threads as we have target machines, but at most
	 * the number of CPUs - 1 if there is more than one.
	 */
	num_threads = sysconf(_SC_NPROCESSORS_ONLN);
	num_threads = MAX2(1, num_threads - 1);
	num_compiler_threads = MIN2(num_threads, ARRAY_SIZE(sscreen->tm));
	num_compiler_threads_lowprio =
		MIN2(num_threads, ARRAY_SIZE(sscreen->tm_low_priority));

	if (!util_queue_init(&sscreen->shader_compiler_queue, "si_shader",
			     32, num_compiler_threads,
			     UTIL_QUEUE_INIT_RESIZE_IF_FULL)) {
		si_destroy_shader_cache(sscreen);
		FREE(sscreen);
		return NULL;
	}

	if (!util_queue_init(&sscreen->shader_compiler_queue_low_priority,
			     "si_shader_low",
			     32, num_compiler_threads_lowprio,
			     UTIL_QUEUE_INIT_RESIZE_IF_FULL |
			     UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY)) {
	       si_destroy_shader_cache(sscreen);
	       FREE(sscreen);
	       return NULL;
	}

	si_handle_env_var_force_family(sscreen);

	if (!debug_get_bool_option("RADEON_DISABLE_PERFCOUNTERS", false))
		si_init_perfcounters(sscreen);

	/* Hawaii has a bug with offchip buffers > 256 that can be worked
	 * around by setting 4K granularity.
	 */
	sscreen->tess_offchip_block_dw_size =
		sscreen->b.family == CHIP_HAWAII ? 4096 : 8192;

	/* The mere presense of CLEAR_STATE in the IB causes random GPU hangs
	 * on SI. */
	sscreen->has_clear_state = sscreen->b.chip_class >= CIK;

	sscreen->has_distributed_tess =
		sscreen->b.chip_class >= VI &&
		sscreen->b.info.max_se >= 2;

	sscreen->has_draw_indirect_multi =
		(sscreen->b.family >= CHIP_POLARIS10) ||
		(sscreen->b.chip_class == VI &&
		 sscreen->b.info.pfp_fw_version >= 121 &&
		 sscreen->b.info.me_fw_version >= 87) ||
		(sscreen->b.chip_class == CIK &&
		 sscreen->b.info.pfp_fw_version >= 211 &&
		 sscreen->b.info.me_fw_version >= 173) ||
		(sscreen->b.chip_class == SI &&
		 sscreen->b.info.pfp_fw_version >= 79 &&
		 sscreen->b.info.me_fw_version >= 142);

	sscreen->has_ds_bpermute = sscreen->b.chip_class >= VI;
	sscreen->has_msaa_sample_loc_bug = (sscreen->b.family >= CHIP_POLARIS10 &&
					    sscreen->b.family <= CHIP_POLARIS12) ||
					   sscreen->b.family == CHIP_VEGA10 ||
					   sscreen->b.family == CHIP_RAVEN;
	sscreen->dpbb_allowed = sscreen->b.chip_class >= GFX9 &&
				!(sscreen->b.debug_flags & DBG_NO_DPBB);
	sscreen->dfsm_allowed = sscreen->dpbb_allowed &&
				!(sscreen->b.debug_flags & DBG_NO_DFSM);

	/* While it would be nice not to have this flag, we are constrained
	 * by the reality that LLVM 5.0 doesn't have working VGPR indexing
	 * on GFX9.
	 */
	sscreen->llvm_has_working_vgpr_indexing = sscreen->b.chip_class <= VI;

	sscreen->b.has_cp_dma = true;
	sscreen->b.has_streamout = true;

	/* Some chips have RB+ registers, but don't support RB+. Those must
	 * always disable it.
	 */
	if (sscreen->b.family == CHIP_STONEY ||
	    sscreen->b.chip_class >= GFX9) {
		sscreen->b.has_rbplus = true;

		sscreen->b.rbplus_allowed =
			!(sscreen->b.debug_flags & DBG_NO_RB_PLUS) &&
			(sscreen->b.family == CHIP_STONEY ||
			 sscreen->b.family == CHIP_RAVEN);
	}

	(void) mtx_init(&sscreen->shader_parts_mutex, mtx_plain);
	sscreen->use_monolithic_shaders =
		(sscreen->b.debug_flags & DBG_MONOLITHIC_SHADERS) != 0;

	sscreen->b.barrier_flags.cp_to_L2 = SI_CONTEXT_INV_SMEM_L1 |
					    SI_CONTEXT_INV_VMEM_L1;
	if (sscreen->b.chip_class <= VI) {
		sscreen->b.barrier_flags.cp_to_L2 |= SI_CONTEXT_INV_GLOBAL_L2;
		sscreen->b.barrier_flags.L2_to_cp |= SI_CONTEXT_WRITEBACK_GLOBAL_L2;
	}

	sscreen->b.barrier_flags.compute_to_L2 = SI_CONTEXT_CS_PARTIAL_FLUSH;

	if (debug_get_bool_option("RADEON_DUMP_SHADERS", false))
		sscreen->b.debug_flags |= DBG_ALL_SHADERS;

	for (i = 0; i < num_compiler_threads; i++)
		sscreen->tm[i] = si_create_llvm_target_machine(sscreen);
	for (i = 0; i < num_compiler_threads_lowprio; i++)
		sscreen->tm_low_priority[i] = si_create_llvm_target_machine(sscreen);

	/* Create the auxiliary context. This must be done last. */
	sscreen->b.aux_context = si_create_context(&sscreen->b.b, 0);

	if (sscreen->b.debug_flags & DBG_TEST_DMA)
		r600_test_dma(&sscreen->b);

	if (sscreen->b.debug_flags & (DBG_TEST_VMFAULT_CP |
				      DBG_TEST_VMFAULT_SDMA |
				      DBG_TEST_VMFAULT_SHADER))
		si_test_vmfault(sscreen);

	return &sscreen->b.b;
}