Leon Woestenberg afae9e69ff Fix AxiStreamFrame default for self.byte_lanes from 1 to all. ...

If I connect a AXIS source to an AXIS sink, the #byte_lanes is incorrectly 1 rather than all lanes enabled.
self.source = AxiStreamSource(AxiStreamBus.from_prefix(dut, "sink"), dut.clk, dut.reset)

Root cause is AxiStreamFrame assumes byte width 1 without TKEEP, but it should default to self.width // 8
because the AXIS specification mentions "when TKEEP is absent, TKEEP defaults to all bits HIGH" and "The width of the data payload is an integer number of bytes."

Fix: https://github.com/alexforencich/cocotbext-axi/blob/master/cocotbext/axi/axis.py#L290

self.byte_lanes = 1
self.byte_lanes = self.width // 8

Relevant AXIS Specification:
https://developer.arm.com/documentation/ihi0051/a/Default-Signaling-Requirements/Default-value-signaling/Optional-TKEEP-and-TSTRB?lang=en

Signed-off-by: Leon Woestenberg <leon@sidebranch.com>

2023-01-18 12:55:19 -08:00

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