Enum chipset_device::io::IoResult

pub enum IoResult {
    Ok,
    Err(IoError),
    Defer(DeferredToken),
}

The result returned by a device IO (memory-mapped IO, port IO, or PCI Config Space) operation, as in methods of MmioIntercept, PortIoIntercept, or PciConfigSpace.

Variants

Ok

The IO operation succeeded.

Err(IoError)

The IO operation failed due to an access error.

The caller should log the failure, then ignore writes, and fill the buffer with an appropriate bus-specific error value on reads. e.g. For port IO or memory-mapped IO this value is typically !0, while for PCI config space the value is typically 0.

Defer(DeferredToken)

Defer this request until deferred::DeferredRead::complete or deferred::DeferredWrite::complete is called.

Implementations

impl IoResult

pub fn unwrap(self)

Asserts if self is not IoResult::Ok.

pub fn now_or_never(self) -> Result<(), IoError>

Converts self to a Result<(), IoError>, panicking if self is IoResult::Defer.

Trait Implementations

impl Debug for IoResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.