Struct DcaCacheCtx 

pub struct DcaCacheCtx<'a, C: DcaCache> { /* private fields */ }

Owning wrapper around a DcaCache.

Per DCB-00 §9 INV-D13, the canonical place to plumb a &mut SCB into the platform crate. Engine drivers (e.g. AudioPlayer, SdmmcEngine) build a DcaCacheCtx once at construction; their per-transfer methods take &mut DcaCacheCtx<...> rather than &mut SCB directly. Application code MUST NOT construct a bare &mut SCB outside of (a) a DcaCacheCtx constructor or (b) the pre-DCB grandfathered call sites.

Implementations

impl<'a, C: DcaCache> DcaCacheCtx<'a, C>

pub fn new(cache: &'a mut C) -> Self

Wrap a cache controller for use by DCB transitions.

pub fn cache_mut(&mut self) -> &mut C

Borrow the underlying cache controller. Reserved for engine drivers that need to issue DCB-internal cache ops on extents that are not themselves DcaBufs (e.g. an MPU carve-out scratch zone). Call sites count against the discipline scanner budget unless DCB owns them.