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migen/actorlib/fifo: add FIFO wrapper function

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Allow automatic instantiation of the correct fifo (SyncFIFO or AsyncFIFO) according to the clock domains passed in argument.
This commit is contained in:
Florent Kermarrec 2015-07-24 13:02:54 +02:00
parent 1f1ff5a5e9
commit d0a19c4be8
1 changed files with 12 additions and 0 deletions
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12
migen/actorlib/fifo.py
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@ -55,3 +55,15 @@ class SyncFIFO(_FIFOActor):
class AsyncFIFO(_FIFOActor):
def __init__(self, layout, depth):
_FIFOActor.__init__(self, fifo.AsyncFIFO, layout, depth)
def FIFO(layout, depth, buffered=False,
sink_cd="sys", source_cd="sys"):
if sink_cd != source_cd:
if buffered:
ValueError("AsyncFIFO does not support buffered mode")
fifo = AsyncFIFO(layout, depth)
return ClockDomainsRenamer({"write": sink_cd, "read": source_cd})(fifo)
else:
fifo = SyncFIFO(layout, depth, buffered)
return ClockDomainsRenamer(sink_cd)(fifo)