Struct VirtioTransport

pub struct VirtioTransport {
    pub transport_type: TransportType,
    pub base: u64,
    pub pci_modern: PciModernConfig,
}

Unified VirtIO transport handle

Fields

transport_type: TransportType

Transport type

base: u64

For MMIO: the MMIO base address For PCI Modern: common_cfg base address

pci_modern: PciModernConfig

PCI Modern specific config (only valid if transport_type == PciModern)

Implementations

impl VirtioTransport

pub fn mmio(mmio_base: u64) -> Self

Create MMIO transport

pub fn pci_modern(config: PciModernConfig) -> Self

Create PCI Modern transport

pub fn get_status(&self) -> u8

Get device status

pub fn set_status(&self, status: u8)

Set device status

pub fn reset(&self, tsc_freq: u64) -> bool

Reset device

pub fn read_features(&self) -> u64

Read device feature bits (64-bit)

pub fn write_features(&self, features: u64)

Write driver-accepted features

pub fn get_num_queues(&self) -> u16

Get number of queues (PCI Modern only, MMIO needs different approach)

pub fn select_queue(&self, queue_idx: u16)

Select a queue for configuration

pub fn get_queue_size(&self) -> u16

Get max queue size for selected queue

pub fn set_queue_size(&self, size: u16)

Set queue size

pub fn set_queue_desc(&self, addr: u64)

Set queue descriptor table address

pub fn set_queue_avail(&self, addr: u64)

Set queue available ring address

pub fn set_queue_used(&self, addr: u64)

Set queue used ring address

pub fn enable_queue(&self)

Enable the selected queue

pub fn get_notify_addr(&self, queue_idx: u16) -> u64

Get notify address for a queue Returns (notify_addr, queue_notify_offset)

pub fn notify_queue(&self, queue_idx: u16)

Notify device about queue

pub fn read_mac(&self, mac_out: &mut [u8; 6]) -> bool

Read MAC address (net device specific)

pub fn setup_queue( &self, queue_idx: u16, desc_addr: u64, avail_addr: u64, used_addr: u64, queue_size: u16, ) -> Result<u64, VirtioInitError>

Setup a virtqueue. Returns the notify address on success.

Arguments

• queue_idx: Queue index (0 for blk, 0/1 for net RX/TX)
• desc_addr: Physical address of descriptor table
• avail_addr: Physical address of available ring
• used_addr: Physical address of used ring
• queue_size: Number of descriptors

pub fn read_blk_capacity(&self) -> u64

Read block device capacity (blk device specific)

pub fn read_blk_size(&self) -> u32

Read block device sector size (blk device specific)

Trait Implementations

impl Clone for VirtioTransport

fn clone(&self) -> VirtioTransport

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VirtioTransport

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

Formats the value using the given formatter.

impl Copy for VirtioTransport