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2019-10-18base: Add classes that encapsulate a channel addressAndreas Sandberg
There are cases where the memory system needs to reason about channel-local addresses. These are currently represented using the Addr and AddrRange classes. This is not ideal since it doesn't provide any type safety when working with global addresses and channel-local addresses. This is particularly problematic when porting existing components to work in multi-channel configurations. This changeset introduces the new ChannelAddr and ChannelAddrRange classes. These classes encapsulate channel-local addresses in a contiguous address space. These can, for example, be used in a memory controller to represent a flat address space when calculating timings or in a sectored cache. Change-Id: I45d4061ebc8507a10d0a4577b28796dc5ec7a469 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21600 Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Tested-by: kokoro <noreply+kokoro@google.com>