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soc/interconnect/stream: reintroduce params

This commit is contained in:
Florent Kermarrec 2015-11-12 01:12:15 +01:00
parent f6b30fcae2
commit 81c6facca2
1 changed files with 12 additions and 6 deletions
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16
litex/soc/interconnect/stream.py
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@ -14,22 +14,24 @@ def _make_m2s(layout):
class EndpointDescription:
def __init__(self, payload_layout, packetized=False):
def __init__(self, payload_layout, param_layout=[], packetized=False):
self.payload_layout = payload_layout
self.param_layout = param_layout
self.packetized = packetized
def get_full_layout(self):
reserved = {"stb", "ack", "payload", "sop", "eop", "description"}
reserved = {"stb", "ack", "payload", "param", "sop", "eop", "description"}
attributed = set()
for f in self.payload_layout:
for f in self.payload_layout + self.param_layout:
if f[0] in attributed:
raise ValueError(f[0] + " already attributed in payload layout")
raise ValueError(f[0] + " already attributed in payload or param layout")
if f[0] in reserved:
raise ValueError(f[0] + " cannot be used in endpoint layout")
attributed.add(f[0])
full_layout = [
("payload", _make_m2s(self.payload_layout)),
("param", _make_m2s(self.param_layout)),
("stb", 1, DIR_M_TO_S),
("ack", 1, DIR_S_TO_M)
]
@ -50,7 +52,10 @@ class _Endpoint(Record):
Record.__init__(self, self.description.get_full_layout())
def __getattr__(self, name):
try:
return getattr(object.__getattribute__(self, "payload"), name)
except:
return getattr(object.__getattribute__(self, "param"), name)
class Source(_Endpoint):
@ -247,7 +252,8 @@ class Buffer(PipelinedActor):
PipelinedActor.__init__(self, 1)
self.sync += \
If(self.pipe_ce,
self.q.payload.eq(self.d.payload)
self.q.payload.eq(self.d.payload),
self.q.param.eq(self.d.param)
)
class Unpack(Module):