Crate regio

Modules§

MmioBank: Represents a contiguous region of memory containing registers. Contained registers are accessed via MmioBank::at and must feature access permissions narrower than MaxAccess.
MmioPtr: Represents a pointer to an MMIO address - with specific access permissions - at which a register might be located.
Offset: Represents an in-memory register with a given layout and access permissions located at an offset from a base address.
Register: Register represents a structured register layout, and its access interface and permissions. This is the core abstraction of the crate.

NoRead: A tag for disallowed register read access.
NoWrite: A tag for disallowed register write access.
Read: A tag for register read access.
SafeWrite: A tag for safe register write access: this is when writes to the register are statically known to be sound (e.g., in the cases of MMIO that lights up an LED or a performance counter system register).
UnsafeWrite: A tag for unsafe register write access: this is when writes to the register may contextually violate the memory model (e.g., system register that toggles the MMU or in modeling a page table entry as a register). In such cases, the user must attest to any given write being sound.

AccessRestrictsTo: Expresses how one set of access permissions can imply a narrower set. For example, read-writable should imply readable.
Accessible: Base marker for register access permissions.
AtomicIoHandle: Represents an abstracted means of atomic read-modify-write register I/O.
IoHandle: Represents an abstracted means of register access.
LayoutOver: A convenience supertrait for the traits expected of layout types over a specific base type. This is not intended to be implemented explicitly, only through its blanket implementation.
ReadHandle: Represents an abstracted means of register reads.
Readable: Marker for readable register access.
Writable: Marker for writable register access.
WriteHandle: Represents an abstracted means of register writes.