def __init__(self, ftdi_sync, streaming_sources): # CSR Command Decoding bdec = BusDecode() self.comb += [ bdec.sink.stb.eq(ftdi_sync.incoming_fifo.readable), bdec.sink.payload.d.eq(ftdi_sync.incoming_fifo.dout), ftdi_sync.incoming_fifo.re.eq(bdec.sink.ack), ] # Bus master busmaster = CSR_Master(has_completion=True) self.master = busmaster.master # Encode output for response benc = BusEncode() # Connect decoder to busmaster to encoder g = DataFlowGraph() g.add_connection(bdec, busmaster) g.add_connection(busmaster, benc) self.submodules.fg = CompositeActor(g) # Bus interleaver to merge streaming and response packets bilv = BusInterleave([benc] + streaming_sources) self.submodules += bilv self.comb += [ ftdi_sync.output_fifo.we.eq(bilv.source.stb), ftdi_sync.output_fifo.din.eq(bilv.source.payload.d), bilv.source.ack.eq(ftdi_sync.output_fifo.writable) ]
def __init__(self, data): self.source = SimSource(data) unescaper = Unescaper(data_layout) self.asink = SimSink("a") self.bsink = SimSink("b") g = DataFlowGraph() g.add_connection(self.source, unescaper) g.add_connection(unescaper, self.asink, "source_a") g.add_connection(unescaper, self.bsink, "source_b") self.submodules.comp = CompositeActor(g)
def __init__(self, usb_actor): g = DataFlowGraph() fifo = SyncFIFO([('d', 16)], 64) in_buffer = Relax([('d', 16)]) out_buffer = Relax([('d', 16)]) g.add_connection(in_buffer, fifo) g.add_connection(fifo, out_buffer) g.add_connection(out_buffer, usb_actor) g.add_connection(usb_actor, in_buffer) self.submodules.composite = CompositeActor(g) self.busy = self.composite.busy
def __init__(self, pads_vga, pads_dvi, *lasmims, blender_latency=5): assert(all(lasmim.aw == lasmims[0].aw and lasmim.dw == lasmims[0].dw for lasmim in lasmims)) pack_factor = lasmims[0].dw//bpp self.fi = FrameInitiator(lasmims[0].aw, pack_factor, len(lasmims)) self.blender = Blender(len(lasmims), pack_factor, blender_latency) self.driver = Driver(pack_factor, pads_vga, pads_dvi) g = DataFlowGraph() epixel_layout = pixel_layout(pack_factor) for n, lasmim in enumerate(lasmims): intseq = misc.IntSequence(lasmim.aw, lasmim.aw) dma_out = AbstractActor(plumbing.Buffer) g.add_connection(self.fi, intseq, source_subr=self.fi.dma_subr(n)) g.add_pipeline(intseq, AbstractActor(plumbing.Buffer), dma_lasmi.Reader(lasmim), dma_out) cast = structuring.Cast(lasmim.dw, epixel_layout, reverse_to=True) g.add_connection(dma_out, cast) g.add_connection(cast, self.blender, sink_subr=["i"+str(n)]) vtg = VTG(pack_factor) g.add_connection(self.fi, vtg, source_subr=self.fi.timing_subr, sink_ep="timing") g.add_connection(self.blender, vtg, sink_ep="pixels") g.add_connection(vtg, self.driver) self.submodules += CompositeActor(g)