diff --git a/src/finn/custom_op/fpgadataflow/__init__.py b/src/finn/custom_op/fpgadataflow/__init__.py index a688898f4a43b33fd3f07cda12144b84829e451f..c4800011fe2c944fa877b12d0247795beda4a5e6 100644 --- a/src/finn/custom_op/fpgadataflow/__init__.py +++ b/src/finn/custom_op/fpgadataflow/__init__.py @@ -88,6 +88,8 @@ class HLSCustomOp(CustomOp): "res_hls": ("s", False, ""), "res_synth": ("s", False, ""), "rtlsim_so": ("s", False, ""), + # partitioning info + "partition_id": ("i", False, 0), # input and output FIFO depths "inFIFODepth": ("i", False, 2), "outFIFODepth": ("i", False, 2), @@ -219,7 +221,6 @@ class HLSCustomOp(CustomOp): self.code_gen_dict["$CLKPERIOD$"] = [str(clk)] self.code_gen_dict["$EXTRA_DIRECTIVES$"] = self.ipgen_extra_directives() - template = self.ipgentcl_template for key in self.code_gen_dict: @@ -235,7 +236,7 @@ class HLSCustomOp(CustomOp): def ipgen_extra_directives(self): "Return a list of extra tcl directives for HLS synthesis." return [] - + def ipgen_singlenode_code(self): """Builds the bash script for ip generation using the IPGenBuilder from finn.util.fpgadataflow.""" diff --git a/src/finn/transformation/fpgadataflow/floorplan.py b/src/finn/transformation/fpgadataflow/floorplan.py new file mode 100644 index 0000000000000000000000000000000000000000..1d9a51875499d77f384c03f54009a9dd1001dea0 --- /dev/null +++ b/src/finn/transformation/fpgadataflow/floorplan.py @@ -0,0 +1,80 @@ +# Copyright (c) 2020, Xilinx +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# +# * Redistributions of source code must retain the above copyright notice, this +# list of conditions and the following disclaimer. +# +# * Redistributions in binary form must reproduce the above copyright notice, +# this list of conditions and the following disclaimer in the documentation +# and/or other materials provided with the distribution. +# +# * Neither the name of FINN nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +from finn.custom_op.registry import getCustomOp +from finn.transformation import Transformation +from finn.util.basic import get_by_name + + +class Floorplan(Transformation): + """Perform Floorplanning of the dataflow design. Separate DMAs into their own + partitions IDs, and TODO: split the design into sections of defined size""" + + def __init__(self, limits=None): + super().__init__() + self.resource_limits = limits + + def apply(self, model): + target_partition_id = 0 + # we currently assume that all dataflow nodes belonging to the same partition + # are connected to each other and there is a single input/output to/from each. + all_nodes = list(model.graph.node) + df_nodes = list( + filter(lambda x: get_by_name(x.attribute, "backend") is not None, all_nodes) + ) + dma_nodes = list(filter(lambda x: x.op_type == "IODMA", df_nodes)) + + non_dma_nodes = list(filter(lambda x: x not in dma_nodes, df_nodes)) + dyn_tlastmarker_nodes = list( + filter( + lambda x: x.op_type == "TLastMarker" + and getCustomOp(x).get_nodeattr("DynIters") == "true", + non_dma_nodes, + ) + ) + + non_dma_nodes = list( + filter(lambda x: x not in dyn_tlastmarker_nodes, non_dma_nodes) + ) + + for node in dma_nodes: + node_inst = getCustomOp(node) + node_inst.set_nodeattr("partition_id", target_partition_id) + target_partition_id += 1 + + for node in dyn_tlastmarker_nodes: + node_inst = getCustomOp(node) + node_inst.set_nodeattr("partition_id", target_partition_id) + target_partition_id += 1 + + for node in non_dma_nodes: + # TODO: implement proper floorplanning; for now just a single partition + node_inst = getCustomOp(node) + node_inst.set_nodeattr("partition_id", target_partition_id) + + return (model, False)