litex/lib/sata/test/transport_tb.py

53 lines
1.5 KiB
Python

import random
from migen.fhdl.std import *
from migen.genlib.record import *
from migen.sim.generic import run_simulation
from lib.sata.std import *
from lib.sata.link import SATALinkLayer
from lib.sata.transport import SATATransportLayer
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)
self.submodules.link = SATALinkLayer(self.bfm.phy)
self.submodules.transport = SATATransportLayer(self.link)
def gen_simulation(self, selfp):
for i in range(100):
yield
selfp.transport.tx.cmd.stb = 1
selfp.transport.tx.cmd.type = fis_types["REG_H2D"]
selfp.transport.tx.cmd.lba = 0x0123456789
yield
while selfp.transport.tx.cmd.ack == 0:
yield
selfp.transport.tx.cmd.stb = 1
selfp.transport.tx.cmd.type = fis_types["DMA_SETUP"]
selfp.transport.tx.cmd.dma_buffer_id = 0x0123456789ABCDEF
yield
while selfp.transport.tx.cmd.ack == 0:
yield
selfp.transport.tx.cmd.stb = 1
selfp.transport.tx.cmd.type = fis_types["DATA"]
yield
for i in range(32):
selfp.transport.tx.data.stb = 1
#selfp.transport.tx.data.sop = (i==0)
selfp.transport.tx.data.eop = (i==31)
selfp.transport.tx.data.d = i
if selfp.transport.tx.data.ack == 1:
yield
else:
while selfp.transport.tx.data.ack == 0:
yield
selfp.transport.tx.cmd.stb = 0
if __name__ == "__main__":
run_simulation(TB(), ncycles=512, vcd_name="my.vcd", keep_files=True)