litex/lib/sata/test/transport_tb.py

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import random
from migen.fhdl.std import *
from migen.genlib.record import *
from migen.sim.generic import run_simulation
from lib.sata.std import *
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from lib.sata.link import SATALink
from lib.sata.transport import SATATransport
from lib.sata.test.bfm import *
from lib.sata.test.common import *
class TB(Module):
def __init__(self):
self.submodules.bfm = BFM(phy_debug=False,
link_random_level=0, transport_debug=True, transport_loopback=True)
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self.submodules.link = SATALink(self.bfm.phy)
self.submodules.transport = SATATransport(self.link)
def gen_simulation(self, selfp):
for i in range(100):
yield
selfp.transport.sink.stb = 1
selfp.transport.sink.sop = 1
selfp.transport.sink.eop = 1
selfp.transport.sink.type = fis_types["REG_H2D"]
selfp.transport.sink.lba = 0x0123456789
yield
while selfp.transport.sink.ack == 0:
yield
for i in range(32):
selfp.transport.sink.stb = 1
selfp.transport.sink.sop = (i==0)
selfp.transport.sink.eop = (i==31)
selfp.transport.sink.type = fis_types["DATA"]
selfp.transport.sink.data = i
if selfp.transport.sink.ack == 1:
yield
else:
while selfp.transport.sink.ack == 0:
yield
selfp.transport.sink.stb = 0
if __name__ == "__main__":
run_simulation(TB(), ncycles=512, vcd_name="my.vcd", keep_files=True)