1 use alloc::{string::String, sync::Arc}; 2 use system_error::SystemError; 3 4 use crate::exception::{irqdesc::IrqReturn, IrqNumber}; 5 6 use super::base::device::{driver::Driver, Device, DeviceId}; 7 8 pub(super) mod irq; 9 pub mod mmio; 10 pub mod sysfs; 11 pub mod transport; 12 pub mod transport_mmio; 13 pub mod transport_pci; 14 #[allow(clippy::module_inception)] 15 pub mod virtio; 16 pub mod virtio_impl; 17 18 /// virtio 设备厂商ID 19 pub const VIRTIO_VENDOR_ID: u16 = 0x1af4; 20 21 pub trait VirtIODevice: Device { 22 fn handle_irq(&self, _irq: IrqNumber) -> Result<IrqReturn, SystemError>; 23 24 fn dev_id(&self) -> &Arc<DeviceId>; 25 26 fn set_device_name(&self, name: String); 27 28 fn device_name(&self) -> String; 29 30 fn set_virtio_device_index(&self, index: VirtIODeviceIndex); 31 32 fn virtio_device_index(&self) -> Option<VirtIODeviceIndex>; 33 34 /// virtio 设备类型 35 fn device_type_id(&self) -> u32; 36 37 /// virtio 设备厂商 38 fn vendor(&self) -> u32; 39 40 /// virtio设备的中断号 41 fn irq(&self) -> Option<IrqNumber>; 42 43 fn set_irq_number(&self, _irq: IrqNumber) -> Result<(), SystemError> { 44 Err(SystemError::ENOSYS) 45 } 46 } 47 48 pub trait VirtIODriver: Driver { 49 fn probe(&self, device: &Arc<dyn VirtIODevice>) -> Result<(), SystemError>; 50 } 51 52 int_like!(VirtIODeviceIndex, usize); 53