[Structure] Added new folder for hls custom nodes and updated related files

src/finn/custom_op/fpgadataflow/__init__.py

+from abc import abstractmethod
+from finn.custom_op import CustomOp
+
+
+class HLSCustomOp(CustomOp):
+    def __init__(self):
+        super().__init__()
+
+
+    @abstractmethod
+    def code_generation(self, node):
+        pass

src/finn/custom_op/streamingmaxpool.py → src/finn/custom_op/fpgadataflow/streamingmaxpool.py

 import numpy as np
 import onnx.helper as helper
+import sys
+import os
 
 from finn.core.datatype import DataType
 from finn.core.utils import get_by_name
-from finn.custom_op import CustomOp
+from finn.custom_op.fpgadataflow import HLSCustomOp
 import finn.backend.fpgadataflow.code_gen_for_single_node_execution as code_gen
 
 
-class StreamingMaxPool(CustomOp):
+class StreamingMaxPool(HLSCustomOp):
     def make_shape_compatible_op(self, node):
         pass
 
@@ -28,4 +30,7 @@ class StreamingMaxPool(CustomOp):
         ## deleting temporary files
         #for temp_file in temp_files:
         #    os.remove(temp_file)
-        sys.exit(1)
+        sys.exit(0)
+
+    def code_generation(self, node):
+        pass

src/finn/custom_op/registry.py

@@ -2,7 +2,7 @@
 # registered and plug in correctly into the infrastructure
 from finn.custom_op.multithreshold import MultiThreshold
 from finn.custom_op.xnorpopcount import XnorPopcountMatMul
-from finn.custom_op.streamingmaxpool import StreamingMaxPool
+from finn.custom_op.fpgadataflow.streamingmaxpool import StreamingMaxPool
 
 # create a mapping of all known CustomOp names and classes
 custom_op = {}

tests/layer_streaming_maxpool.cpp

@@ -17,7 +17,7 @@ int main(){
 
 	hls::stream<ap_uint<2>> in ("in");
 	hls::stream<ap_uint<2>> out ("out");
-	ap_uint<2> dat;x
+	ap_uint<2> dat;
 	
 	for(int i=0;i < num_values/2; i++){
 		dat.range(0,0) = loaded_data[i];