tb/lasmicon: add DF test

diff --git a/tb/lasmicon/lasmicon_df.py b/tb/lasmicon/lasmicon_df.py
new file mode 100644 (file)
index 0000000..054e1b6
--- /dev/null
+++ b/tb/lasmicon/lasmicon_df.py
@@ -0,0 +1,43 @@
+from migen.fhdl.std import *
+from migen.bus import lasmibus
+from migen.actorlib import dma_lasmi
+from migen.sim.generic import Simulator, TopLevel, Proxy
+
+from milkymist.lasmicon import *
+
+from common import sdram_phy, sdram_geom, sdram_timing, DFILogger
+
+class TB(Module):
+       def __init__(self):
+               self.submodules.ctler = LASMIcon(sdram_phy, sdram_geom, sdram_timing)
+               # FIXME: remove dummy master
+               self.submodules.xbar = lasmibus.Crossbar([self.ctler.lasmic], 2, self.ctler.nrowbits)
+               self.submodules.logger = DFILogger(self.ctler.dfi)
+               self.submodules.writer = dma_lasmi.Writer(self.xbar.masters[0])
+
+               self.comb += self.writer.address_data.stb.eq(1)
+               pl = self.writer.address_data.payload
+               pl.a.reset = 255
+               pl.d.reset = pl.a.reset*2
+               self.sync += If(self.writer.address_data.ack,
+                       pl.a.eq(pl.a + 1),
+                       pl.d.eq(pl.d + 2)
+               )
+               self.open_row = None
+
+       def do_simulation(self, s):
+               dfip = Proxy(s, self.ctler.dfi)
+               for p in dfip.phases:
+                       if p.ras_n and not p.cas_n and not p.we_n: # write
+                               d = dfip.phases[0].wrdata | (dfip.phases[1].wrdata << 64)
+                               print(d)
+                               if d != p.address//2 + p.bank*512 + self.open_row*2048:
+                                       print("**** ERROR ****")
+                       elif not p.ras_n and p.cas_n and p.we_n: # activate
+                               self.open_row = p.address
+
+def main():
+       sim = Simulator(TB(), TopLevel("my.vcd"))
+       sim.run(3500)
+
+main()