quick and dirty hack to extract GTH transceiver parameters

gtwizard.py

from collections import OrderedDict

from pyverilog.vparser.parser import parse
from pyverilog.vparser import ast

topnode, directives = parse(["/home/sb/ultrascaletest/ultrascaletest.srcs/sources_1/ip/gtwizard_ultrascale_0/synth/gtwizard_ultrascale_0_gthe3_channel_wrapper.v"])

gth_inst = None

def ast_walk(nodes):
    global gth_inst
    for node in nodes:
        if isinstance(node, ast.InstanceList):
            assert node.instances[0].module == "gtwizard_ultrascale_v1_7_5_gthe3_channel"
            assert gth_inst is None
            gth_inst = node.instances[0]
        elif hasattr(node, "children"):
            ast_walk(node.children())

parameters = OrderedDict()
ports = OrderedDict()

prefix_len = len("GTHE3_CHANNEL_")

ast_walk([topnode])
for c in gth_inst.children():
    if isinstance(c, ast.ParamArg):
        if c.paramname == "NUM_CHANNELS" or c.paramname.endswith("_TIE_EN"):
            continue
        if c.paramname.endswith("_VAL"):
            is_port = True
            name = c.paramname[:-4]
        else:
            is_port = False
            name = c.paramname
        name = name[prefix_len:]

        value_obj = c.children()[0]
        if isinstance(value_obj, ast.IntConst):
            if "'b" in value_obj.value:
                value_fmt = "0b" + value_obj.value.partition("'b")[2]
            else:
                value_fmt = value_obj.value
        elif isinstance(value_obj, ast.StringConst):
            value_fmt = "\"" + value_obj.value + "\""
        else:
            value_fmt = value_obj.value

        if is_port:
            ports["i_" + name] = value_fmt
        else:
            parameters[name] = value_fmt

    elif isinstance(c, ast.PortArg):
        name = c.portname[prefix_len:]
        if "i_" + name not in ports:
            ports["o_" + name] = ""


for k, v in parameters.items():
    print("p_{}={},".format(k, v))
for k, v in ports.items():
    print("{}={},".format(k, v))