def testWriteAndReadCommitAtEveryOperation(self):
""" SFIFO: Write and Read simultaneously, Commit at every operation """
DEPTH = [2, 4, 7, 8, 9, 10]
def stim(DEPTH):
@instance
def _inst():
data_in = itertools.cycle(xrange(128))
yield self.reset()
yield self.fifo_state_check()
yield self.fifo_write(data_in.next(), wcmd=self.COMMIT)
yield self.fifo_state_check()
for i in range(2, DEPTH + 1):
for _ in range(1, i + 1):
yield self.fifo_write_read(data_in.next(), wcmd=self.COMMIT, rcmd=self.COMMIT)
yield self.fifo_state_check()
yield self.fifo_read(data_in.next(), rcmd=self.COMMIT)
yield self.fifo_state_check()
yield self.clk.posedge
raise StopSimulation
return _inst
getDut = sim.DUTer()
for s in self.simulators:
getDut.selectSimulator(s)
for dpt in DEPTH:
self.sfifo_model = sfifo_beh.sfifo_beh(dpt)
dut = getDut(
fifo_speculative,
rst=self.rst,
clk=self.clk,
full=self.full,
we=self.we,
din=self.din,
empty=self.empty,
re=self.re,
dout=self.dout,
wr_commit=self.wr_commit,
wr_discard=self.wr_discard,
rd_commit=self.rd_commit,
rd_discard=self.rd_discard,
afull=self.afull,
aempty=self.aempty,
count=self.count,
afull_th=None,
aempty_th=None,
ovf=self.ovf,
udf=self.udf,
count_max=self.count_max,
depth=dpt,
width=None,
)
stm = stim(dpt)
Simulation(self.clkgen, dut, stm).run()
del dut, stm
def testWriteThenReadDiscardAfterTheLastOperation(self):
""" SFIFO: Write then Read, Discard after the last operation """
DEPTH = [2, 4, 7, 8, 9, 10]
def stim(DEPTH):
@instance
def _inst():
data_in = itertools.cycle(xrange(128))
yield self.reset()
yield self.fifo_state_check()
for i in range(1, DEPTH + 1):
# Fill up to i and Discard
for _ in range(1, i + 1):
yield self.fifo_write(data_in.next())
yield self.fifo_state_check()
self.fifo_command(wcmd=self.DISCARD)
yield self.fifo_state_check()
# Fill up to i and Commit
for _ in range(1, i + 1):
yield self.fifo_write(data_in.next())
yield self.fifo_state_check()
self.fifo_command(wcmd=self.COMMIT)
yield self.fifo_state_check()
# Drain down to 0 and Discard
for _ in range(1, i + 1):
yield self.fifo_read()
yield self.fifo_state_check()
self.fifo_command(rcmd=self.DISCARD)
yield self.fifo_state_check()
# Drain down to 0 and Commit
for _ in range(1, i + 1):
yield self.fifo_read()
yield self.fifo_state_check()
self.fifo_command(rcmd=self.COMMIT)
yield self.fifo_state_check()
yield self.clk.posedge
raise StopSimulation
return _inst
getDut = sim.DUTer()
for s in self.simulators:
getDut.selectSimulator(s)
for dpt in DEPTH:
self.sfifo_model = sfifo_beh.sfifo_beh(dpt)
dut = getDut(
fifo_speculative,
rst=self.rst,
clk=self.clk,
full=self.full,
we=self.we,
din=self.din,
empty=self.empty,
re=self.re,
dout=self.dout,
wr_commit=self.wr_commit,
wr_discard=self.wr_discard,
rd_commit=self.rd_commit,
rd_discard=self.rd_discard,
afull=self.afull,
aempty=self.aempty,
count=self.count,
afull_th=None,
aempty_th=None,
ovf=self.ovf,
udf=self.udf,
count_max=self.count_max,
depth=dpt,
width=None,
)
stm = stim(dpt)
Simulation(self.clkgen, dut, stm).run()
del dut, stm