* CacheCork: an error Grant still says 'toT' even though it is transient
Grants with errors must be handled by a client as though no actual
permissions were obtained, so that two clients do not both end up believing
that they own a block which is only temporarily offline. However, the
Grant MESSAGE should still match the request; ie. if you did Acquire.NtoT,
the response must be Grant.toT, even though the 'error' bit signals that
the Grant actually grants no permissions.
This keeps the implementation of request-response tracking in interstitial
adapters and FSMs simple, consistent with the way multibeat errors must
include all their beats.
* Error: handle permissions properly
FlipRendering { implicit p => ... } now changes the render direction of edges.
diplomatic NodeImps can specify a default render flip using the new 'render' method.
If two (or more) 'auto_' things have the same name, append _0 and _1 to them.
The order of definitions is unaffected; ie:
a => a_0
b => b_0
b => b_1
c => c
a => a_1
We used to place Monitors at the point of the ':='.
This was problematic because the clock domain might be wrong.
Thus, we needed to shove Monitors a lot.
Furthermore, now that we have cross-module ':=', you might not even
have access to the wires at the point where ':=' is invoked.
This reverts commit 8db5bbbae0.
This attempt at clarification instead results in confusing generated verilog like:
`dcache_data_arrays_0 icache_data_arrays_0 (...);`
because of deduplication of identically dimensioned SRAMs...
