srenblad/artiq
1
0
Fork 0
forked from M-Labs/artiq
Code Pull Requests Activity

drtio: aux controller minor fixes

Browse Source
This commit is contained in:
Sebastien Bourdeauducq 2016-11-14 17:26:30 +08:00
parent 84bd962ed5
commit e1394db861
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
artiq/gateware/drtio/aux_controller.py
View File

@ -1,5 +1,6 @@
from migen import *
from migen.fhdl.simplify import FullMemoryWE
from migen.genlib.cdc import MultiReg, PulseSynchronizer
from misoc.interconnect.csr import *
from misoc.interconnect import stream
@ -50,7 +51,7 @@ class Transmitter(Module, AutoCSR):
frame_counter = Signal(frame_counter_nbits)
frame_counter_next = Signal(frame_counter_nbits)
frame_counter_ce = Signal()
frame_counter_rst = Signal(),
frame_counter_rst = Signal()
self.comb += [
frame_counter_next.eq(frame_counter),
If(frame_counter_rst,
@ -68,7 +69,7 @@ class Transmitter(Module, AutoCSR):
self.submodules += start_tx, tx_done
self.comb += start_tx.i.eq(self.aux_tx.re)
self.sync += [
If(tx_done.o, self.aux_tx_w.eq(0)),
If(tx_done.o, self.aux_tx.w.eq(0)),
If(self.aux_tx.re, self.aux_tx.w.eq(1))
]
@ -108,7 +109,7 @@ class Receiver(Module, AutoCSR):
# when continuously drained, the Converter accepts data continuously
self.sync.rtio_rx += [
converter.sink.stb.eq(converter.rx_aux_stb),
converter.sink.stb.eq(link_layer.rx_aux_stb),
converter.sink.data.eq(link_layer.rx_aux_data)
]
self.comb += converter.sink.eop.eq(link_layer.rx_aux_stb & ~link_layer.rx_aux_frame)
@ -127,7 +128,7 @@ class Receiver(Module, AutoCSR):
frame_counter.attr.add("no_retiming")
frame_counter_sys = Signal(frame_counter_nbits)
self.specials += MultiReg(frame_counter, frame_counter_sys)
self.comb += aux_rx_length.status.eq(frame_counter_sys << log2_int(mem_dw//8))
self.comb += self.aux_rx_length.status.eq(frame_counter_sys << log2_int(mem_dw//8))
signal_frame = PulseSynchronizer("rtio_rx", "sys")
frame_ack = PulseSynchronizer("sys", "rtio_rx")
@ -137,7 +138,7 @@ class Receiver(Module, AutoCSR):
If(self.aux_rx_present.re, self.aux_rx_present.w.eq(0)),
If(signal_frame.o, self.aux_rx_present.w.eq(1)),
If(self.aux_rx_error.re, self.aux_rx_error.w.eq(0)),
If(signal_error.o, self.aux_rx_error.eq(1))
If(signal_error.o, self.aux_rx_error.w.eq(1))
]
self.comb += frame_ack.i.eq(self.aux_rx_present.re)
@ -202,12 +203,12 @@ class AuxController(Module):
self.submodules.receiver = Receiver(link_layer, len(self.bus.dat_w))
# TODO: FullMemoryWE should be applied by migen.build
tx_sdram_if = FullMemoryWE()(self.transmitter.mem, read_only=False)
tx_sdram_if = FullMemoryWE()(wishbone.SRAM(self.transmitter.mem, read_only=False))
rx_sdram_if = wishbone.SRAM(self.receiver.mem, read_only=True)
wsb = log2_int(len(self.bus.dat_w)//8)
decoder = wishbone.Decoder(self.bus,
[(lambda a: a[log2_int(max_packet)-wsb] == 0, tx_sdram_if)
(lambda a: a[log2_int(max_packet)-wsb] == 1, rx_sdram_if)],
[(lambda a: a[log2_int(max_packet)-wsb] == 0, tx_sdram_if.bus),
(lambda a: a[log2_int(max_packet)-wsb] == 1, rx_sdram_if.bus)],
register=True)
self.submodules += tx_sdram_if, rx_sdram_if, decoder