DTI Messages and HW #275
DTI Messages and HW #275
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…efore maxNumBeats.
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| import 'package:rohd/rohd.dart'; | |||
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Need Copyright headers. Copilot does a decent job if you say 'put our usual Copyright header on files without'.
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See my comment below about ready_valid_interface.dart. I think it's better for that to come from a different PR but I needed it for my work. Anything else that's missing a copyright header I will add.
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Checks fail on long lines and default arguments. |
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@desmonddak I copied |
| }, actions: []), | ||
| ], | ||
| ); | ||
| sendIdle <= sendState.currentState.eq(AxiStreamBeatState.idle.index); |
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suggestion: rather than querying currentState, move driving of related signals for different states into the actions
| import 'package:rohd_hcl/rohd_hcl.dart'; | ||
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| /// A generic module to send messages over AXI-S. | ||
| class AxiStreamInterfaceTx extends Module { |
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question: why have the word Interface in the class name? why not just AxiSTx or something?
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No particularly strong reasoning here. If you think it's better without, I have no problem changing!
| final countEnable = stream.valid & (stream.ready ?? Const(1)); | ||
| final acceptNextSend = | ||
| sendIdle | (countEnable & (stream.last ?? Const(1))); | ||
| final beatCounter = Counter.simple( |
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without having read the spec in detail, is there an opportunity to use the Serializer (etc.) components to reduce complexity/increase reuse?
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Ah yes it sure does look like Serializer (and Deserializer for rx) would work nicely here - let me try refactoring
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Turns out there is a limitation that would prevent me from using these standard components. I filed an issue here:
#277
I might just try to crank the issue out myself and then apply it.
3 participants
Description & Motivation
This adds
LogicStructures for AMBA compliant DTI_TBU messages. This also adds a generic DTI controller module that is capable of sending and receiving DTI messages in a compliant fashion over a pair of AXI-S interfaces.As part of the controller module, we also add AXI-S compliant link layer controller modules for TX and RX on the physical interface.
Related Issue(s)
N/A
Testing
Unit testing add for all HW modules described above.
Backwards-compatibility
There is one minor backward incompatible change to the AXI-S interface definition. There was a bug where the
TUSERsignal was not taking the correct width if present.Documentation
Documentation will be added as part of this change set under doc/components/amba/dti.md.