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rtio/sed: add top-level core

This commit is contained in:
Sebastien Bourdeauducq 2017-09-16 14:04:56 +08:00
parent 92c63ce2e4
commit a155a481b1
1 changed files with 81 additions and 0 deletions

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from migen import *
from artiq.gateware.rtio import rtlink
from artiq.gateware.rtio.sed import layouts
from artiq.gateware.rtio.sed.lane_distributor import *
from artiq.gateware.rtio.sed.fifos import *
from artiq.gateware.rtio.sed.gates import *
from artiq.gateware.rtio.sed.output_driver import *
__all__ = ["SED"]
class SED(Module):
def __init__(self, channels, mode, enable_spread=True, lane_count=8, fifo_depth=128, interface=None):
if mode == "sync":
lane_dist_cdr = lambda x: x
fifos_cdr = lambda x: x
gates_cdr = lambda x: x
output_driver_cdr = lambda x: x
elif mode == "async":
lane_dist_cdr = ClockDomainsRenamer("rsys")
fifos_cdr = ClockDomainsRenamer({"write": "rsys", "read": "rio"})
gates_cdr = ClockDomainsRenamer("rio")
output_driver_cdr = ClockDomainsRenamer("rio")
else:
raise ValueError
fine_ts_width = max(rtlink.get_fine_ts_width(c.interface)
for c in channels)
seqn_width = layouts.seqn_width(lane_count, fifo_depth)
self.submodules.lane_dist = lane_dist_cdr(
LaneDistributor(lane_count, seqn_width,
layouts.fifo_payload(channels), fine_ts_width,
enable_spread=enable_spread,
interface=interface))
self.submodules.fifos = fifos_cdr(
FIFOs(lane_count, fifo_depth,
layouts.fifo_payload(channels), mode))
self.submodules.gates = gates_cdr(
Gates(lane_count, seqn_width,
layouts.fifo_payload(channels),
layouts.output_network_payload(channels)))
self.submodules.output_driver = output_driver_cdr(
OutputDriver(channels, lane_count, seqn_width))
for o, i in zip(self.lane_dist.output, self.fifos.input):
self.comb += o.connect(i)
for o, i in zip(self.fifos.output, self.gates.input):
self.comb += o.connect(i)
for o, i in zip(self.gates.output, self.output_driver.input):
self.comb += i.eq(o)
@property
def cri(self):
return self.lane_dist.cri
@property
def minimum_coarse_timestamp(self):
return self.lane_dist.minimum_coarse_timestamp
@property
def coarse_timestamp(self):
return self.gates.coarse_timestamp
@property
def collision(self):
return self.output_driver.collision
@property
def collision_channel(self):
return self.output_driver.collision_channel
@property
def busy(self):
return self.output_driver.busy
@property
def busy_channel(self):
return self.output_driver.busy_channel