89 lines
1.9 KiB
Python
89 lines
1.9 KiB
Python
from migen.fhdl.std import *
|
|
|
|
from lib.sata.std import *
|
|
|
|
class BFMDword():
|
|
def __init__(self, dat=0):
|
|
self.dat = dat
|
|
self.start = 1
|
|
self.done = 0
|
|
|
|
class BFMSource(Module):
|
|
def __init__(self, dw):
|
|
self.source = Source(phy_layout(dw))
|
|
###
|
|
self.dwords = []
|
|
self.dword = BFMDword()
|
|
self.dword.done = 1
|
|
|
|
def send(self, dword, blocking=True):
|
|
self.dwords.append(dword)
|
|
if blocking:
|
|
while dword.done == 0:
|
|
yield
|
|
|
|
def do_simulation(self, selfp):
|
|
if len(self.dwords) and self.dword.done:
|
|
self.dword = self.dwords.pop(0)
|
|
if not self.dword.done:
|
|
selfp.source.stb = 1
|
|
selfp.source.charisk = 0b0000
|
|
for k, v in primitives.items():
|
|
if v == self.dword.dat:
|
|
selfp.source.charisk = 0b0001
|
|
selfp.source.data = self.dword.dat
|
|
elif selfp.source.stb == 1 and selfp.source.ack == 1:
|
|
self.dword.done = 1
|
|
selfp.source.stb = 0
|
|
|
|
class BFMSink(Module):
|
|
def __init__(self, dw):
|
|
self.sink = Sink(phy_layout(dw))
|
|
###
|
|
self.dword = BFMDword()
|
|
|
|
def receive(self):
|
|
self.dword.done = 0
|
|
while self.dword.done == 0:
|
|
yield
|
|
|
|
def do_simulation(self, selfp):
|
|
self.dword.done = 0
|
|
selfp.sink.ack = 1
|
|
if selfp.sink.stb == 1:
|
|
self.dword.done = 1
|
|
self.dword.dat = selfp.sink.data
|
|
|
|
class BFMPHY(Module):
|
|
def __init__(self, dw):
|
|
self.dw = dw
|
|
|
|
self.submodules.bfm_sink = BFMSink(dw)
|
|
self.submodules.bfm_source = BFMSource(dw)
|
|
|
|
self.source = self.bfm_source.source
|
|
self.sink = self.bfm_sink.sink
|
|
|
|
self.dword = 0
|
|
|
|
def send(self, dword, blocking=True):
|
|
packet = BFMDword(dword)
|
|
yield from self.bfm_source.send(dword, blocking)
|
|
|
|
def receive(self):
|
|
yield from self.bfm_sink.receive()
|
|
self.rx_dword = self.bfm_sink.dword.dat
|
|
|
|
class BFM(Module):
|
|
def __init__(self, dw, debug=False):
|
|
self.debug = debug
|
|
|
|
###
|
|
|
|
self.submodules.phy = BFMPHY(dw)
|
|
|
|
def gen_simulation(self, selfp):
|
|
while True:
|
|
yield from self.phy.receive()
|
|
print("%08x" %(self.phy.rx_dword))
|