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[Question] AXI Ordering #286

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Yuan-Mao opened this issue Feb 27, 2023 · 0 comments
Open

[Question] AXI Ordering #286

Yuan-Mao opened this issue Feb 27, 2023 · 0 comments

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@Yuan-Mao
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Hi I have a question about the axi_lite_from_mem module:
https://github.com/pulp-platform/axi/blob/master/src/axi_lite_from_mem.sv#L176

Looks like the module uses a FIFO to track the read/write order of all incoming transactions and asserts bready and rready in that same order. However, if I understand correctly, the AXI protocol does not require that read and write transactions to be completed in order. Therefore could the module stall if a downstream AXIL slave reorders its responses (for example, reorder r->w to w->r)?

Thanks!

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