Make SRAMInterface parameters publicly available

[debs-sifive]

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Type of Improvement

• Feature

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• Squash: The PR will be squashed and merged (choose this if you have no preference).

Release Notes

memSize, dataType, numReadPorts, numWritePorts, numReadwritePorts, masked parameters are now visible for SRAMInterface.

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[jackkoenig]

This actually can't be public in this way because making an argument to a class a val makes it a public field of the class in a way that is indistinguishable with public vals in the body. Since this is of type Data, it will become a field of the Bundle.

Instead, you can keep tpe not a val but add a public def below that just returns it, something like def dataType: T = tpe

[debs-sifive]

hmm I'm actually thinking of putting this into a case class so the whole interface doesn't have to get passed around all the time (per what Megan said). So that should avoid the Data issue

[debs-sifive]

ok nvm, switching to your suggested getter because of what Andrew said

using case classes has the long-term issue of dead fields

[jackkoenig]

Note that "API Modification" means breaking something, just making stuff public is a new "Feature"