#!/usr/bin/env python
|
#!/usr/bin/env python
|
# -*- coding: utf-8 -*-
|
# -*- coding: utf-8 -*-
|
|
|
#
|
#
|
# Basic Router model
|
# Basic Router model
|
# * TLM model
|
# * TBM model
|
|
# * Code generation model
|
#
|
#
|
# Author: Oscar Diaz
|
# Author: Oscar Diaz
|
# Version: 0.1
|
# Version: 0.2
|
# Date: 03-03-2011
|
# Date: 14-03-2011
|
|
|
#
|
#
|
# This code is free software; you can redistribute it and/or
|
# This code is free software; you can redistribute it and/or
|
# modify it under the terms of the GNU Lesser General Public
|
# modify it under the terms of the GNU Lesser General Public
|
# License as published by the Free Software Foundation; either
|
# License as published by the Free Software Foundation; either
|
# version 2.1 of the License, or (at your option) any later version.
|
# version 2.1 of the License, or (at your option) any later version.
|
#
|
#
|
# This code is distributed in the hope that it will be useful,
|
# This code is distributed in the hope that it will be useful,
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
# Lesser General Public License for more details.
|
# Lesser General Public License for more details.
|
#
|
#
|
# You should have received a copy of the GNU Lesser General Public
|
# You should have received a copy of the GNU Lesser General Public
|
# License along with this library; if not, write to the
|
# License along with this library; if not, write to the
|
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
# Boston, MA 02111-1307 USA
|
# Boston, MA 02111-1307 USA
|
#
|
#
|
|
|
#
|
#
|
# Changelog:
|
# Changelog:
|
#
|
#
|
# 03-03-2011 : (OD) initial release
|
# 03-03-2011 : (OD) initial release
|
|
# 14-03-2011 : (OD) adding code generation model
|
#
|
#
|
|
|
"""
|
"""
|
Basic router TLM model
|
* Basic router TBM model
|
|
* Router code generation model
|
"""
|
"""
|
|
|
from nocmodel.noc_tlm_base import *
|
from nocmodel.noc_tbm_base import *
|
|
from nocmodel.noc_codegen_base import *
|
|
from intercon_model import *
|
|
|
# ---------------------------
|
# ---------------------------
|
# Router TLM model
|
# Router TBM model
|
|
|
class basic_router_tlm(noc_tlm_base):
|
class basic_router_tbm(noc_tbm_base):
|
"""
|
"""
|
TLM model of a NoC router. This router uses store-and-forward technique,
|
TBM model of a NoC router. This router uses store-and-forward technique,
|
using the routing information from the router object. This model just
|
using the routing information from the router object. This model just
|
forward the packet, and if the packet is in its router destination, send it
|
forward the packet, and if the packet is in its router destination, send it
|
to its ipcore. Each package that the ipcore generates is delivered
|
to its ipcore. Each package that the ipcore generates is delivered
|
automátically.
|
automátically.
|
|
|
Attributes:
|
Attributes:
|
* router_ref : base reference
|
* router_ref : base reference
|
* fifo_len: max number of packets to hold in each port
|
* fifo_len: max number of packets to hold in each port
|
|
|
Notes:
|
Notes:
|
* This model is completely behavioral.
|
* This model is completely behavioral.
|
* See code comments to better understanding.
|
* See code comments to better understanding.
|
"""
|
"""
|
def __init__(self, router_ref, fifo_len=4):
|
def __init__(self, router_ref, fifo_len=5):
|
noc_tlm_base.__init__(self)
|
noc_tbm_base.__init__(self)
|
if isinstance(router_ref, router):
|
if isinstance(router_ref, router):
|
self.router_ref = router_ref
|
self.router_ref = router_ref
|
self.graph_ref = router_ref.graph_ref
|
self.graph_ref = router_ref.graph_ref
|
self.logname = "Router '%s'" % router_ref.name
|
self.logname = "Router '%s'" % router_ref.name
|
if router_ref.name == "":
|
if router_ref.name == "":
|
self.logname = "Router addr '%s'" % router_ref.address
|
self.logname = "Router addr '%s'" % router_ref.address
|
else:
|
else:
|
raise TypeError("This class needs a router object as constructor argument.")
|
raise TypeError("This class needs a router object as constructor argument.")
|
|
|
self.debug("constructor")
|
self.debug("constructor")
|
|
|
# generic parameters
|
# generic parameters
|
self.fifo_len = fifo_len
|
self.fifo_len = fifo_len
|
|
|
# delay parameters
|
# delay parameters
|
self.delay_route = 5 # delay for each routing decisition
|
self.delay_route = 5 # delay for each routing decisition
|
self.delay_outfromfifo = 2 # delay for extract packet from fifo to output port
|
self.delay_outfromfifo = 2 # delay for extract packet from fifo to output port
|
self.delay_ipcorebus = 1 # delay for ipcore local bus operations
|
self.delay_ipcorebus = 1 # delay for ipcore local bus operations
|
|
|
# router parameters (Assume rectangular coords)
|
# router parameters (Assume rectangular coords)
|
self.myaddress = router_ref.address
|
self.myaddress = router_ref.address
|
self.mynodecoord = (router_ref.coord_x, router_ref.coord_y)
|
self.mynodecoord = (router_ref.coord_x, router_ref.coord_y)
|
|
|
# port additions: use a copy of the ports list, and add
|
# port additions: use a copy of the ports list, and add
|
# fifo storage and signal events
|
# fifo storage and signal events
|
router_ref.update_ports_info()
|
router_ref.update_ports_info()
|
self.ports_info = router_ref.ports.copy()
|
self.ports_info = router_ref.ports.copy()
|
for p in self.ports_info.itervalues():
|
for p in self.ports_info.itervalues():
|
p["fifo_in"] = []
|
p["fifo_in"] = []
|
p["fifo_out"] = []
|
p["fifo_out"] = []
|
p["fifo_in_event"] = myhdl.Signal(False)
|
p["fifo_in_event"] = myhdl.Signal(False)
|
p["fifo_out_event"] = myhdl.Signal(False)
|
p["fifo_out_event"] = myhdl.Signal(False)
|
|
self.idlesignal = myhdl.Signal(True)
|
|
|
# extract a list of all fifo event signals
|
# extract a list of all fifo event signals
|
self.list_fifo_in_events = [i["fifo_in_event"] for i in self.ports_info.itervalues()]
|
self.list_fifo_in_events = [i["fifo_in_event"] for i in self.ports_info.itervalues()]
|
self.list_fifo_out_events = [i["fifo_out_event"] for i in self.ports_info.itervalues()]
|
self.list_fifo_out_events = [i["fifo_out_event"] for i in self.ports_info.itervalues()]
|
|
|
# the routing table is generated from the routes_info dict
|
# the routing table is generated from the routes_info dict
|
# key: its destination address
|
# key: its destination address
|
# values: a list of ports where the package should send it. First element
|
# values: a list of ports where the package should send it. First element
|
# is the default option, next elements are alternate routes
|
# is the default option, next elements are alternate routes
|
router_ref.update_routes_info()
|
router_ref.update_routes_info()
|
self.detailed_routingtable = self.router_ref.routes_info.copy()
|
self.detailed_routingtable = self.router_ref.routes_info.copy()
|
self.routingtable = {}
|
self.routingtable = {}
|
for dest, data in self.detailed_routingtable.iteritems():
|
for dest, data in self.detailed_routingtable.iteritems():
|
self.routingtable[dest] = [x["next"] for x in data]
|
self.routingtable[dest] = [x["next"] for x in data]
|
# add route to myself
|
# add route to myself
|
self.routingtable[self.myaddress] = [self.myaddress]
|
self.routingtable[self.myaddress] = [self.myaddress]
|
|
|
# log interesting info
|
# log interesting info
|
self.info(" router params: fifo_len=%d" % self.fifo_len)
|
self.info(" router params: fifo_len=%d" % self.fifo_len)
|
self.info(" router info: addr=%d coord=%s" % (self.myaddress, repr(self.mynodecoord)))
|
self.info(" router info: addr=%d coord=%s" % (self.myaddress, repr(self.mynodecoord)))
|
self.info(" router ports: %s" % repr(self.ports_info))
|
self.info(" router ports: %s" % repr(self.ports_info))
|
self.info(" router routing table: %s" % repr(self.routingtable))
|
self.info(" router routing table: %s" % repr(self.routingtable))
|
|
|
# myhdl generators (concurrent processes)
|
# myhdl generators (concurrent processes)
|
self.generators = []
|
self.generators = []
|
|
|
# fifo out process
|
# fifo out process
|
@myhdl.instance
|
@myhdl.instance
|
def flush_fifo_out():
|
def flush_fifo_out():
|
while True:
|
while True:
|
for port, data in self.ports_info.iteritems():
|
for port, data in self.ports_info.iteritems():
|
if len(data["fifo_out"]) > 0:
|
if len(data["fifo_out"]) > 0:
|
|
self.idlesignal.next = False
|
if not data["fifo_out_event"].val:
|
if not data["fifo_out_event"].val:
|
self.debug("flush_fifo_out CATCH fifo not empty and NO trigger! fifo has %s" % repr(data["fifo_out"]))
|
self.debug("flush_fifo_out CATCH fifo not empty and NO trigger! fifo has %s" % repr(data["fifo_out"]))
|
self.info("flush_fifo_out event in port %d" % port)
|
self.info("flush_fifo_out event in port %d" % port)
|
packet = data["fifo_out"].pop(0)
|
packet = data["fifo_out"].pop(0)
|
self.debug("flush_fifo_out port %d packet is %s (delay %d)" % (port, repr(packet), self.delay_outfromfifo))
|
self.debug("flush_fifo_out port %d packet is %s (delay %d)" % (port, repr(packet), self.delay_outfromfifo))
|
# DELAY model: time to move from fifo to external port in destination object
|
# DELAY model: time to move from fifo to external port in destination object
|
yield myhdl.delay(self.delay_outfromfifo)
|
yield myhdl.delay(self.delay_outfromfifo)
|
|
self.idlesignal.next = False
|
# try to send it
|
# try to send it
|
retval = self.send(self.router_ref, data["channel"], packet)
|
retval = self.send(self.router_ref, data["channel"], packet)
|
if retval == noc_tlm_errcodes.no_error:
|
if retval == noc_tbm_errcodes.no_error:
|
# clean trigger
|
# clean trigger
|
data["fifo_out_event"].next = False
|
data["fifo_out_event"].next = False
|
|
self.debug("flush_fifo_out clean trigger. list %s" % repr(self.list_fifo_out_events))
|
#continue
|
#continue
|
else:
|
else:
|
self.error("flush_fifo_out FAILED in port %d (code %d)" % (port, retval))
|
self.error("flush_fifo_out FAILED in port %d (code %d)" % (port, retval))
|
# error management:
|
# error management:
|
#TODO: temporally put back to fifo
|
#TODO: temporally put back to fifo
|
self.info("flush_fifo_out packet went back to fifo.")
|
self.info("flush_fifo_out packet went back to fifo.")
|
data["fifo_out"].append(packet)
|
data["fifo_out"].append(packet)
|
|
else:
|
|
if data["fifo_out_event"].val:
|
|
self.debug("flush_fifo_out CATCH fifo_out empty and trigger ON! Cleaning trigger")
|
|
data["fifo_out_event"].next = False
|
|
self.idlesignal.next = True
|
yield self.list_fifo_out_events
|
yield self.list_fifo_out_events
|
self.debug("flush_fifo_out event hit. list %s" % repr(self.list_fifo_out_events))
|
self.debug("flush_fifo_out event hit. list %s" % repr(self.list_fifo_out_events))
|
|
|
# routing loop
|
# routing loop
|
@myhdl.instance
|
@myhdl.instance
|
def routing_loop():
|
def routing_loop():
|
while True:
|
while True:
|
# routing update: check all fifos
|
# routing update: check all fifos
|
for port, data in self.ports_info.iteritems():
|
for port, data in self.ports_info.iteritems():
|
while len(data["fifo_in"]) > 0:
|
while len(data["fifo_in"]) > 0:
|
|
self.idlesignal.next = False
|
if not data["fifo_in_event"].val:
|
if not data["fifo_in_event"].val:
|
self.debug("routing_loop CATCH fifo not empty and NO trigger! fifo has %s" % repr(data["fifo_in"]))
|
self.debug("routing_loop CATCH fifo not empty and NO trigger! fifo has %s" % repr(data["fifo_in"]))
|
self.info("routing_loop fifo_in event in port %d" % port)
|
self.info("routing_loop fifo_in event in port %d" % port)
|
# data in fifo
|
# data in fifo
|
packet = data["fifo_in"].pop(0)
|
packet = data["fifo_in"].pop(0)
|
data["fifo_in_event"].next = False
|
data["fifo_in_event"].next = False
|
self.debug("routing_loop port %d packet %s to ipcore (delay %d)" % (port, repr(packet), self.delay_route))
|
self.debug("routing_loop port %d packet %s to ipcore (delay %d)" % (port, repr(packet), self.delay_route))
|
# destination needed. extract from routing table
|
# destination needed. extract from routing table
|
destaddr = packet["dst"]
|
destaddr = packet["dst"]
|
self.debug("routing_loop port %d routingtable %s (dest %d)" % (port, repr(self.routingtable), destaddr))
|
self.debug("routing_loop port %d routingtable %s (dest %d)" % (port, repr(self.routingtable), destaddr))
|
nextaddr = self.routingtable[destaddr][0]
|
nextaddr = self.routingtable[destaddr][0]
|
self.debug("routing_loop port %d to port %s (dest %d)" % (port, nextaddr, destaddr))
|
self.debug("routing_loop port %d to port %s (dest %d)" % (port, nextaddr, destaddr))
|
# DELAY model: time spent to make a route decisition
|
# DELAY model: time spent to make a route decisition
|
yield myhdl.delay(self.delay_route)
|
yield myhdl.delay(self.delay_route)
|
|
self.idlesignal.next = False
|
self.ports_info[nextaddr]["fifo_out"].append(packet)
|
self.ports_info[nextaddr]["fifo_out"].append(packet)
|
# fifo trigger
|
# fifo trigger
|
if self.ports_info[nextaddr]["fifo_out_event"]:
|
if self.ports_info[nextaddr]["fifo_out_event"]:
|
self.debug("routing_loop CATCH possible miss event because port %d fifo_out_event=True", self.myaddress)
|
self.debug("routing_loop CATCH possible miss event because port %d fifo_out_event=True", self.myaddress)
|
self.ports_info[nextaddr]["fifo_out_event"].next = True
|
self.ports_info[nextaddr]["fifo_out_event"].next = True
|
|
# assuming empty fifo_in
|
|
if data["fifo_in_event"].val:
|
|
self.debug("routing_loop CATCH fifo_in empty and trigger ON! Cleaning trigger")
|
|
data["fifo_in_event"].next = False
|
|
self.idlesignal.next = True
|
|
self.debug("routing_loop idle. fifo_in_events list %s" % repr(self.list_fifo_in_events))
|
|
if not any(self.list_fifo_in_events):
|
yield self.list_fifo_in_events
|
yield self.list_fifo_in_events
|
self.debug("routing_loop event hit. list %s" % repr(self.list_fifo_in_events))
|
else:
|
|
self.debug("routing_loop pending fifo_in_events list %s" % repr(self.list_fifo_in_events))
|
|
self.debug("routing_loop fifo_in event hit. list %s" % repr(self.list_fifo_in_events))
|
|
|
# list of all generators
|
# list of all generators
|
self.generators.extend([flush_fifo_out, routing_loop])
|
self.generators.extend([flush_fifo_out, routing_loop])
|
self.debugstate()
|
self.debugstate()
|
|
|
# Transaction - related methods
|
# Transaction - related methods
|
def send(self, src, dest, packet, addattrs=None):
|
def send(self, src, dest, packet, addattrs=None):
|
"""
|
"""
|
This method will be called on a fifo available data event
|
This method will be called on a fifo available data event
|
|
|
Notes:
|
Notes:
|
* Ignore src object.
|
* Ignore src object.
|
* dest should be a channel object, but also can be a router address or
|
* dest should be a channel object, but also can be a router address or
|
a router object.
|
a router object.
|
"""
|
"""
|
self.debug("-> send( %s , %s , %s , %s )" % (repr(src), repr(dest), repr(packet), repr(addattrs)))
|
self.debug("-> send( %s , %s , %s , %s )" % (repr(src), repr(dest), repr(packet), repr(addattrs)))
|
if isinstance(dest, int):
|
if isinstance(dest, int):
|
# it means dest is a router address
|
# it means dest is a router address
|
therouter = self.graph_ref.get_router_by_address(dest)
|
therouter = self.graph_ref.get_router_by_address(dest)
|
if therouter == False:
|
if therouter == False:
|
self.error("-> send: dest %s not found" % repr(dest) )
|
self.error("-> send: dest %s not found" % repr(dest) )
|
return noc_tlm_errcodes.tlm_badcall_send
|
return noc_tbm_errcodes.tbm_badcall_send
|
# extract channel ref from ports_info
|
# extract channel ref from ports_info
|
thedest = self.ports_info[therouter.address]["channel"]
|
thedest = self.ports_info[therouter.address]["channel"]
|
elif isinstance(dest, router):
|
elif isinstance(dest, router):
|
# extract channel ref from ports_info
|
# extract channel ref from ports_info
|
thedest = self.ports_info[dest.address]["channel"]
|
thedest = self.ports_info[dest.address]["channel"]
|
elif isinstance(dest, channel):
|
elif isinstance(dest, channel):
|
# use it directly
|
# use it directly
|
thedest = dest
|
thedest = dest
|
else:
|
else:
|
self.error("-> send: what is dest '%s'?" % repr(dest) )
|
self.error("-> send: what is dest '%s'?" % repr(dest) )
|
return noc_tlm_errcodes.tlm_badcall_send
|
return noc_tbm_errcodes.tbm_badcall_send
|
|
|
# call recv on the dest channel object
|
# call recv on the dest channel object
|
retval = thedest.tlm.recv(self.router_ref, thedest, packet, addattrs)
|
retval = thedest.tbm.recv(self.router_ref, thedest, packet, addattrs)
|
|
|
# TODO: something to do with the retval?
|
# TODO: something to do with the retval?
|
self.debug("-> send returns code '%s'" % repr(retval))
|
self.debug("-> send returns code '%s'" % repr(retval))
|
return retval
|
return retval
|
|
|
def recv(self, src, dest, packet, addattrs=None):
|
def recv(self, src, dest, packet, addattrs=None):
|
"""
|
"""
|
This method will be called by channel objects connected to this router.
|
This method will be called by channel objects connected to this router.
|
|
|
Notes:
|
Notes:
|
* The recv method only affect the receiver FIFO sets
|
* The recv method only affect the receiver FIFO sets
|
* Ignore dest object.
|
* Ignore dest object.
|
"""
|
"""
|
|
|
self.debug("-> recv( %s , %s , %s , %s )" % (repr(src), repr(dest), repr(packet), repr(addattrs)))
|
self.debug("-> recv( %s , %s , %s , %s )" % (repr(src), repr(dest), repr(packet), repr(addattrs)))
|
# src can be an address or a noc object.
|
# src can be an address or a noc object.
|
# convert to addresses
|
# convert to addresses
|
if isinstance(src, int):
|
if isinstance(src, int):
|
thesrc = src
|
thesrc = src
|
elif isinstance(src, router):
|
elif isinstance(src, router):
|
thesrc = src.address
|
thesrc = src.address
|
elif isinstance(src, channel):
|
elif isinstance(src, channel):
|
# get address from the other end. Use the endpoints to calculate
|
# get address from the other end. Use the endpoints to calculate
|
# source router
|
# source router
|
src_index = src.endpoints.index(self.router_ref) - 1
|
src_index = src.endpoints.index(self.router_ref) - 1
|
theend = src.endpoints[src_index]
|
theend = src.endpoints[src_index]
|
if isinstance(theend, router):
|
if isinstance(theend, router):
|
thesrc = theend.address
|
thesrc = theend.address
|
elif isinstance(theend, ipcore):
|
elif isinstance(theend, ipcore):
|
thesrc = theend.router_ref.address
|
thesrc = theend.router_ref.address
|
else:
|
else:
|
self.error("-> recv: what is endpoint '%s' in channel '%s'?" % (repr(theend), repr(src)) )
|
self.error("-> recv: what is endpoint '%s' in channel '%s'?" % (repr(theend), repr(src)) )
|
return noc_tlm_errcodes.tlm_badcall_recv
|
return noc_tbm_errcodes.tbm_badcall_recv
|
else:
|
else:
|
self.error("-> recv: what is src '%s'?" % repr(src) )
|
self.error("-> recv: what is src '%s'?" % repr(src) )
|
return noc_tlm_errcodes.tlm_badcall_recv
|
return noc_tbm_errcodes.tbm_badcall_recv
|
|
|
# thesrc becomes the port number
|
# thesrc becomes the port number
|
# check if there is enough space on the FIFO
|
# check if there is enough space on the FIFO
|
if len(self.ports_info[thesrc]["fifo_in"]) == self.fifo_len:
|
if len(self.ports_info[thesrc]["fifo_in"]) == self.fifo_len:
|
# full FIFO
|
# full FIFO
|
self.error("-> recv: full fifo. Try later.")
|
self.error("-> recv: full fifo. Try later.")
|
return noc_tlm_errcodes.full_fifo
|
self.debug("-> recv: port %s fifo_in contents: %s" % (thesrc, repr(self.ports_info[thesrc]["fifo_in"])))
|
|
return noc_tbm_errcodes.full_fifo
|
# get into fifo
|
# get into fifo
|
self.ports_info[thesrc]["fifo_in"].append(packet)
|
self.ports_info[thesrc]["fifo_in"].append(packet)
|
# trigger a new routing event
|
# trigger a new routing event
|
if self.ports_info[thesrc]["fifo_in_event"].val:
|
if self.ports_info[thesrc]["fifo_in_event"].val:
|
self.debug("-> recv: CATCH possible miss event because in port %d fifo_in_event=True", thesrc)
|
self.debug("-> recv: CATCH possible miss event because in port %d fifo_in_event=True", thesrc)
|
|
self.debug("-> recv: CATCH fifo_in_event list %s" % repr(self.list_fifo_in_events))
|
self.ports_info[thesrc]["fifo_in_event"].next = True
|
self.ports_info[thesrc]["fifo_in_event"].next = True
|
|
|
self.debug("-> recv returns 'noc_tlm_errcodes.no_error'")
|
self.debug("-> recv returns 'noc_tbm_errcodes.no_error'")
|
return noc_tlm_errcodes.no_error
|
return noc_tbm_errcodes.no_error
|
|
|
|
# ---------------------------
|
|
# Router code generation model
|
|
|
|
class basic_router_codegen(noc_codegen_ext):
|
|
"""
|
|
Code generation extension for Router objects.
|
|
"""
|
|
|
|
def __init__(self, codegen_ref):
|
|
noc_codegen_ext.__init__(self, codegen_ref)
|
|
self.router_ref = codegen_ref.nocobject_ref
|
|
if not isinstance(self.router_ref, router):
|
|
raise TypeError("Argument must be a 'noc_codegen_base' instance defined for a router object.")
|
|
|
|
# router model: This basic router has some parameters put in the
|
|
# generics list, and a fixed number of NoC ports: 4.
|
|
|
|
# assumptions: use 4 ports 'dualwb_intercon' plus 1 port 'slavewb_intercon'
|
|
|
|
codegen_ref.modulename = "basic_4P_router"
|
|
|
|
# 1. convert basic attributes to generics
|
|
codegen_ref.add_generic("name", self.router_ref.name, "Router Name")
|
|
codegen_ref.add_generic("address", self.router_ref.address, "Router Address")
|
|
# assuming rectangular layout
|
|
codegen_ref.add_generic("coord_x", self.router_ref.coord_x, "Router X-axis Coord")
|
|
codegen_ref.add_generic("coord_y", self.router_ref.coord_y, "Router Y-axis Coord")
|
|
|
|
# 2. Calculate which of 4 ports is used by who
|
|
portinfo = {"N": None, "E": None, "S": None, "W": None}
|
|
for pname, pvalues in self.router_ref.ports.iteritems():
|
|
if pname != self.router_ref.address:
|
|
# check correct intercon
|
|
if not isinstance(pvalues["channel"].ports[self.router_ref.address]["intercon"], dualwb_intercon):
|
|
raise UserWarning("Port '%d' on router '%s' does not use intercon 'dualwb_intercon'." % (pname, self.router_ref.name))
|
|
# calculate which port
|
|
dx = self.router_ref.coord_x - pvalues["peer"].coord_x
|
|
dy = self.router_ref.coord_y - pvalues["peer"].coord_y
|
|
if dx == 0:
|
|
if dy > 0:
|
|
portinfo["S"] = pname
|
|
else:
|
|
portinfo["N"] = pname
|
|
if dy == 0:
|
|
if dx > 0:
|
|
portinfo["W"] = pname
|
|
else:
|
|
portinfo["E"] = pname
|
|
else:
|
|
# check correct intercon
|
|
if not isinstance(pvalues["channel"].ports[self.router_ref.address]["intercon"], slavewb_intercon):
|
|
raise UserWarning("Port 'Local' on router '%s' does not use intercon 'slavewb_intercon'." % self.router_ref.name)
|
|
|
|
icon_ref = dualwb_intercon()
|
|
# 3. Add ports and info through generics
|
|
for pname, pvalue in portinfo.iteritems():
|
|
# add new port
|
|
pstr = "Port%s" % pname
|
|
codegen_ref.add_port(pstr, None, "Port %s" % pname, type=icon_ref.intercon_type, nocport=pvalue)
|
|
for signame, sigval in icon_ref.signals.iteritems():
|
|
stmp = get_new_signal(
|
|
name=signame,
|
|
direction=sigval["direction"],
|
|
default_value=intbv(0)[sigval["width"]:],
|
|
description=sigval["description"])
|
|
codegen_ref.add_port(pstr, stmp)
|
|
# determine if the port is used
|
|
if pvalue is None:
|
|
penable = 0
|
|
paddr = 0
|
|
else:
|
|
penable = 1
|
|
paddr = pvalue
|
|
codegen_ref.add_generic("Use_Port%s" % pname, penable, "Is Port%s being used?" % pname)
|
|
codegen_ref.add_generic("Dest_Port%s" % pname, paddr, "Dest address in Port%s" % pname)
|
|
# 4. Local port
|
|
icon_ref = slavewb_intercon()
|
|
codegen_ref.add_port("PortLocal", None, "Port Local", type=icon_ref.intercon_type)
|
|
for signame, sigval in icon_ref.signals.iteritems():
|
|
stmp = get_new_signal(
|
|
name=signame,
|
|
direction=sigval["direction"],
|
|
default_value=intbv(0)[sigval["width"]:],
|
|
description=sigval["description"])
|
|
codegen_ref.add_port("PortLocal", stmp)
|
|
|
|
# 5. Calculate a hash with generics and ports info. This hash will help
|
|
# codegen to establish equivalent router implementations.
|
|
codegen_ref.model_hash()
|
|
|
|
# 6. Implementation comment
|
|
codegen_ref.implementation += "-- Add here implementation code for Router %s" % self.router_ref.name
|
|
|
No newline at end of file
|
No newline at end of file
|
