コード例 #1
0
ファイル: si_pipe.c プロジェクト: BNieuwenhuizen/mesa
static struct pipe_context *si_create_context(struct pipe_screen *screen,
                                              void *priv, 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;
	LLVMTargetRef r600_target;
	const char *triple = "amdgcn--";
	int shader, i;

	if (!sctx)
		return NULL;

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

	sctx->b.b.screen = screen; /* this must be set first */
	sctx->b.b.priv = priv;
	sctx->b.b.destroy = si_destroy_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))
		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_uvd) {
		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);

	if (!(sscreen->b.debug_flags & DBG_NO_CE) && ws->cs_add_const_ib) {
		sctx->ce_ib = ws->cs_add_const_ib(sctx->b.gfx.cs);
		if (!sctx->ce_ib)
			goto fail;

		if (ws->cs_add_const_preamble_ib) {
			sctx->ce_preamble_ib =
			           ws->cs_add_const_preamble_ib(sctx->b.gfx.cs);

			if (!sctx->ce_preamble_ib)
				goto fail;
		}

		sctx->ce_suballocator =
				u_suballocator_create(&sctx->b.b, 1024 * 1024,
						      64, PIPE_BIND_CUSTOM,
						      PIPE_USAGE_DEFAULT, FALSE);
		if (!sctx->ce_suballocator)
			goto fail;
	}

	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, PIPE_BIND_CUSTOM, 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);

	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);
	r600_query_init_backend_mask(&sctx->b); /* this emits commands and must be last */

	/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD is buggy
	 * with a NULL buffer). We need to use a dummy buffer instead. */
	if (sctx->b.chip_class == CIK) {
		sctx->null_const_buf.buffer = pipe_buffer_create(screen, PIPE_BIND_CONSTANT_BUFFER,
								 PIPE_USAGE_DEFAULT, 16);
		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);
			}
		}

		/* 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);
	}

	/* XXX: This is the maximum value allowed.  I'm not sure how to compute
	 * this for non-cs shaders.  Using the wrong value here can result in
	 * GPU lockups, but the maximum value seems to always work.
	 */
	sctx->scratch_waves = 32 * sscreen->b.info.num_good_compute_units;

	/* Initialize LLVM TargetMachine */
	r600_target = radeon_llvm_get_r600_target(triple);
	sctx->tm = LLVMCreateTargetMachine(r600_target, triple,
					   r600_get_llvm_processor_name(sscreen->b.family),
#if HAVE_LLVM >= 0x0308
					   sscreen->b.debug_flags & DBG_SI_SCHED ?
					   	"+DumpCode,+vgpr-spilling,+si-scheduler" :
#endif
					   	"+DumpCode,+vgpr-spilling",
					   LLVMCodeGenLevelDefault,
					   LLVMRelocDefault,
					   LLVMCodeModelDefault);

	return &sctx->b.b;
fail:
	fprintf(stderr, "radeonsi: Failed to create a context.\n");
	si_destroy_context(&sctx->b.b);
	return NULL;
}
コード例 #2
0
ファイル: si_pipe.c プロジェクト: ChristophHaag/mesa-mesa
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->ws;
	int shader, i;
	bool stop_exec_on_failure = (flags & PIPE_CONTEXT_LOSE_CONTEXT_ON_RESET) != 0;

	if (!sctx)
		return NULL;

	sctx->has_graphics = sscreen->info.chip_class == SI ||
			     !(flags & PIPE_CONTEXT_COMPUTE_ONLY);

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

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

	slab_create_child(&sctx->pool_transfers, &sscreen->pool_transfers);
	slab_create_child(&sctx->pool_transfers_unsync, &sscreen->pool_transfers);

	sctx->ws = sscreen->ws;
	sctx->family = sscreen->info.family;
	sctx->chip_class = sscreen->info.chip_class;

	if (sscreen->info.has_gpu_reset_counter_query) {
		sctx->gpu_reset_counter =
			sctx->ws->query_value(sctx->ws, RADEON_GPU_RESET_COUNTER);
	}


	if (sctx->chip_class == CIK ||
	    sctx->chip_class == VI ||
	    sctx->chip_class == GFX9) {
		sctx->eop_bug_scratch = si_resource(
			pipe_buffer_create(&sscreen->b, 0, PIPE_USAGE_DEFAULT,
					   16 * sscreen->info.num_render_backends));
		if (!sctx->eop_bug_scratch)
			goto fail;
	}

	/* Initialize context allocators. */
	sctx->allocator_zeroed_memory =
		u_suballocator_create(&sctx->b, 128 * 1024,
				      0, PIPE_USAGE_DEFAULT,
				      SI_RESOURCE_FLAG_UNMAPPABLE |
				      SI_RESOURCE_FLAG_CLEAR, false);
	if (!sctx->allocator_zeroed_memory)
		goto fail;

	sctx->b.stream_uploader = u_upload_create(&sctx->b, 1024 * 1024,
						    0, PIPE_USAGE_STREAM,
						    SI_RESOURCE_FLAG_READ_ONLY);
	if (!sctx->b.stream_uploader)
		goto fail;

	sctx->cached_gtt_allocator = u_upload_create(&sctx->b, 16 * 1024,
						       0, PIPE_USAGE_STAGING, 0);
	if (!sctx->cached_gtt_allocator)
		goto fail;

	sctx->ctx = sctx->ws->ctx_create(sctx->ws);
	if (!sctx->ctx)
		goto fail;

	if (sscreen->info.num_sdma_rings && !(sscreen->debug_flags & DBG(NO_ASYNC_DMA))) {
		sctx->dma_cs = sctx->ws->cs_create(sctx->ctx, RING_DMA,
						   (void*)si_flush_dma_cs,
						   sctx, stop_exec_on_failure);
	}

	bool use_sdma_upload = sscreen->info.has_dedicated_vram && sctx->dma_cs;
	sctx->b.const_uploader = u_upload_create(&sctx->b, 256 * 1024,
						 0, PIPE_USAGE_DEFAULT,
						 SI_RESOURCE_FLAG_32BIT |
						 (use_sdma_upload ?
							  SI_RESOURCE_FLAG_UPLOAD_FLUSH_EXPLICIT_VIA_SDMA :
							  (sscreen->cpdma_prefetch_writes_memory ?
								   0 : SI_RESOURCE_FLAG_READ_ONLY)));
	if (!sctx->b.const_uploader)
		goto fail;

	if (use_sdma_upload)
		u_upload_enable_flush_explicit(sctx->b.const_uploader);

	sctx->gfx_cs = ws->cs_create(sctx->ctx,
				     sctx->has_graphics ? RING_GFX : RING_COMPUTE,
				     (void*)si_flush_gfx_cs, sctx, stop_exec_on_failure);

	/* 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 = si_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;

	/* Initialize context functions used by graphics and compute. */
	sctx->b.emit_string_marker = si_emit_string_marker;
	sctx->b.set_debug_callback = si_set_debug_callback;
	sctx->b.set_log_context = si_set_log_context;
	sctx->b.set_context_param = si_set_context_param;
	sctx->b.get_device_reset_status = si_get_reset_status;
	sctx->b.set_device_reset_callback = si_set_device_reset_callback;

	si_init_all_descriptors(sctx);
	si_init_buffer_functions(sctx);
	si_init_clear_functions(sctx);
	si_init_blit_functions(sctx);
	si_init_compute_functions(sctx);
	si_init_compute_blit_functions(sctx);
	si_init_debug_functions(sctx);
	si_init_fence_functions(sctx);
	si_init_state_compute_functions(sctx);

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

	/* Initialize graphics-only context functions. */
	if (sctx->has_graphics) {
		si_init_context_texture_functions(sctx);
		si_init_query_functions(sctx);
		si_init_msaa_functions(sctx);
		si_init_shader_functions(sctx);
		si_init_state_functions(sctx);
		si_init_streamout_functions(sctx);
		si_init_viewport_functions(sctx);

		sctx->blitter = util_blitter_create(&sctx->b);
		if (sctx->blitter == NULL)
			goto fail;
		sctx->blitter->skip_viewport_restore = true;

		si_init_draw_functions(sctx);
	}

	/* Initialize SDMA functions. */
	if (sctx->chip_class >= CIK)
		cik_init_sdma_functions(sctx);
	else
		si_init_dma_functions(sctx);

	sctx->sample_mask = 0xffff;

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

	if (sctx->chip_class >= GFX9) {
		sctx->wait_mem_scratch = si_resource(
			pipe_buffer_create(screen, 0, PIPE_USAGE_DEFAULT, 4));
		if (!sctx->wait_mem_scratch)
			goto fail;

		/* Initialize the memory. */
		si_cp_write_data(sctx, sctx->wait_mem_scratch, 0, 4,
				 V_370_MEM, V_370_ME, &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->chip_class == CIK) {
		sctx->null_const_buf.buffer =
			pipe_aligned_buffer_create(screen,
						   SI_RESOURCE_FLAG_32BIT,
						   PIPE_USAGE_DEFAULT, 16,
						   sctx->screen->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;

		unsigned start_shader = sctx->has_graphics ? 0 :  PIPE_SHADER_COMPUTE;
		for (shader = start_shader; shader < SI_NUM_SHADERS; shader++) {
			for (i = 0; i < SI_NUM_CONST_BUFFERS; i++) {
				sctx->b.set_constant_buffer(&sctx->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);
	}

	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->info.num_good_compute_units,
				   max_threads_per_block / 64);

	si_init_compiler(sscreen, &sctx->compiler);

	/* 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);

	sctx->sample_pos_buffer =
		pipe_buffer_create(sctx->b.screen, 0, PIPE_USAGE_DEFAULT,
				   sizeof(sctx->sample_positions));
	pipe_buffer_write(&sctx->b, sctx->sample_pos_buffer, 0,
			  sizeof(sctx->sample_positions), &sctx->sample_positions);

	/* this must be last */
	si_begin_new_gfx_cs(sctx);

	if (sctx->chip_class == CIK) {
		/* Clear the NULL constant buffer, because loads should return zeros.
		 * Note that this forces CP DMA to be used, because clover deadlocks
		 * for some reason when the compute codepath is used.
		 */
		uint32_t clear_value = 0;
		si_clear_buffer(sctx, sctx->null_const_buf.buffer, 0,
				sctx->null_const_buf.buffer->width0,
				&clear_value, 4, SI_COHERENCY_SHADER, true);
	}
	return &sctx->b;
fail:
	fprintf(stderr, "radeonsi: Failed to create a context.\n");
	si_destroy_context(&sctx->b);
	return NULL;
}
コード例 #3
0
ファイル: si_pipe.c プロジェクト: hakzsam/mesa
static struct pipe_context *si_create_context(struct pipe_screen *screen,
                                              void *priv, 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 (sscreen->b.debug_flags & DBG_CHECK_VM)
		flags |= PIPE_CONTEXT_DEBUG;

	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 = priv;
	sctx->b.b.destroy = si_destroy_context;
	sctx->b.b.emit_string_marker = si_emit_string_marker;
	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))
		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_uvd) {
		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);

	if (!(sscreen->b.debug_flags & DBG_NO_CE) && ws->cs_add_const_ib) {
		sctx->ce_ib = ws->cs_add_const_ib(sctx->b.gfx.cs);
		if (!sctx->ce_ib)
			goto fail;

		if (ws->cs_add_const_preamble_ib) {
			sctx->ce_preamble_ib =
			           ws->cs_add_const_preamble_ib(sctx->b.gfx.cs);

			if (!sctx->ce_preamble_ib)
				goto fail;
		}

		sctx->ce_suballocator =
				u_suballocator_create(&sctx->b.b, 1024 * 1024,
						      PIPE_BIND_CUSTOM,
						      PIPE_USAGE_DEFAULT, false);
		if (!sctx->ce_suballocator)
			goto fail;
	}

	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, PIPE_BIND_CUSTOM, 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);

	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);
	r600_query_init_backend_mask(&sctx->b); /* this emits commands and must be last */

	/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD is buggy
	 * with a NULL buffer). We need to use a dummy buffer instead. */
	if (sctx->b.chip_class == CIK) {
		sctx->null_const_buf.buffer = pipe_buffer_create(screen, PIPE_BIND_CONSTANT_BUFFER,
								 PIPE_USAGE_DEFAULT, 16);
		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);
			}
		}

		/* 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);

	return &sctx->b.b;
fail:
	fprintf(stderr, "radeonsi: Failed to create a context.\n");
	si_destroy_context(&sctx->b.b);
	return NULL;
}
コード例 #4
0
static struct pipe_context *si_create_context(struct pipe_screen *screen, void *priv)
{
	struct si_context *sctx = CALLOC_STRUCT(si_context);
	struct si_screen* sscreen = (struct si_screen *)screen;
	struct radeon_winsys *ws = sscreen->b.ws;
	LLVMTargetRef r600_target;
#if HAVE_LLVM >= 0x0306
	const char *triple = "amdgcn--";
#endif
	int shader, i;

	if (sctx == NULL)
		return NULL;

	sctx->b.b.screen = screen; /* this must be set first */
	sctx->b.b.priv = priv;
	sctx->b.b.destroy = si_destroy_context;
	sctx->b.set_atom_dirty = (void *)si_set_atom_dirty;
	sctx->screen = sscreen; /* Easy accessing of screen/winsys. */

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

	if (sscreen->b.info.has_uvd) {
		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.rings.gfx.cs = ws->cs_create(sctx->b.ctx, RING_GFX, si_context_gfx_flush,
					     sctx, sscreen->b.trace_bo ?
						sscreen->b.trace_bo->cs_buf : NULL);
	sctx->b.rings.gfx.flush = si_context_gfx_flush;

	si_init_all_descriptors(sctx);

	/* Initialize cache_flush. */
	sctx->cache_flush = si_atom_cache_flush;
	sctx->atoms.s.cache_flush = &sctx->cache_flush;

	sctx->msaa_sample_locs = si_atom_msaa_sample_locs;
	sctx->atoms.s.msaa_sample_locs = &sctx->msaa_sample_locs;

	sctx->msaa_config = si_atom_msaa_config;
	sctx->atoms.s.msaa_config = &sctx->msaa_config;

	sctx->atoms.s.streamout_begin = &sctx->b.streamout.begin_atom;
	sctx->atoms.s.streamout_enable = &sctx->b.streamout.enable_atom;

	si_init_state_functions(sctx);
	si_init_shader_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;

	/* these must be last */
	si_begin_new_cs(sctx);
	r600_query_init_backend_mask(&sctx->b); /* this emits commands and must be last */

	/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD is buggy
	 * with a NULL buffer). We need to use a dummy buffer instead. */
	if (sctx->b.chip_class == CIK) {
		sctx->null_const_buf.buffer = pipe_buffer_create(screen, PIPE_BIND_CONSTANT_BUFFER,
								 PIPE_USAGE_DEFAULT, 16);
		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);
			}
		}

		/* 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, false);
	}

	/* XXX: This is the maximum value allowed.  I'm not sure how to compute
	 * this for non-cs shaders.  Using the wrong value here can result in
	 * GPU lockups, but the maximum value seems to always work.
	 */
	sctx->scratch_waves = 32 * sscreen->b.info.max_compute_units;

#if HAVE_LLVM >= 0x0306
	/* Initialize LLVM TargetMachine */
	r600_target = radeon_llvm_get_r600_target(triple);
	sctx->tm = LLVMCreateTargetMachine(r600_target, triple,
					   r600_get_llvm_processor_name(sscreen->b.family),
					   "+DumpCode,+vgpr-spilling",
					   LLVMCodeGenLevelDefault,
					   LLVMRelocDefault,
					   LLVMCodeModelDefault);
#endif

	return &sctx->b.b;
fail:
	si_destroy_context(&sctx->b.b);
	return NULL;
}