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feat(virtio-mmio): add MAGIC_VALUE constant #11

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feat(virtio-mmio): add MAGIC_VALUE constant #11

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16 changes: 16 additions & 0 deletions src/mmio.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,20 @@ pub use crate::driver_notifications::NotificationData;
use crate::volatile::{OveralignedVolatilePtr, WideVolatilePtr};
use crate::{le16, le32, DeviceConfigSpace, DeviceStatus, Id};

/// The magic value for virtio-mmio.
///
/// See [`DeviceRegistersVolatileFieldAccess::magic_value`].
///
/// # Examples
///
/// ```
/// # use virtio_spec as virtio;
/// use virtio::le32;
///
/// assert_eq!(virtio::mmio::MAGIC_VALUE, le32::from_le_bytes(*b"virt"));
/// ```
pub const MAGIC_VALUE: le32 = le32::from_ne(0x74726976);

/// MMIO Device Registers
///
/// Use [`DeviceRegistersVolatileFieldAccess`] and [`DeviceRegistersVolatileWideFieldAccess`] to work with this struct.
Expand Down Expand Up @@ -144,6 +158,8 @@ device_register_impl! {
///
/// 0x74726976
/// (a Little Endian equivalent of the “virt” string).
///
/// See [`MAGIC_VALUE`].
#[doc(alias = "MagicValue")]
#[offset(0x000)]
#[access(ReadOnly)]
Expand Down