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vm-virtio: Add PCI transport support

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Copied from crosvm 107edb3e with one main modification: VirtioPciDevice
implements BusDevice.

We need this modification because it is the only way for us to be able
to add a VirtioPciDevice to the MMIO bus. Bus insertion takes a
BusDevice. The fact that VirtioPciDevice implements PciDevice which
itself implements BusDevice does not mean that Rust will automatically
downcast a VirtioPciDevice into a BusDevice.

crosvm works around that issue by having the PCI, virtio and BusDevice
implementations in the same crate.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz
2019-04-18 19:32:41 +02:00
parent 8246434710
commit c2c51dc9d1
4 changed files with 805 additions and 5 deletions
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vm-virtio/src/lib.rs
+2 -5
View File
@@ -20,20 +20,17 @@ use std::io;
mod device;
mod queue;
pub mod transport;
pub use self::device::*;
pub use self::queue::*;
#[allow(dead_code)]
const DEVICE_INIT: u32 = 0x00;
#[allow(dead_code)]
const DEVICE_ACKNOWLEDGE: u32 = 0x01;
#[allow(dead_code)]
const DEVICE_DRIVER: u32 = 0x02;
#[allow(dead_code)]
const DEVICE_DRIVER_OK: u32 = 0x04;
#[allow(dead_code)]
const DEVICE_FEATURES_OK: u32 = 0x08;
#[allow(dead_code)]
const DEVICE_FAILED: u32 = 0x80;
#[allow(dead_code)]