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vmm: Add MSI-X support to virtio-pci devices

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In order to allow virtio-pci devices to use MSI-X messages instead
of legacy pin based interrupts, this patch implements the MSI-X
support for cloud-hypervisor. The VMM code and virtio-pci bits have
been modified based on the "msix" module previously added to the pci
crate.

Fixes #12

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-05-29 16:33:29 -07:00
committed by Rob Bradford
parent 13a065d2cd
commit 8df05b72dc
6 changed files with 148 additions and 36 deletions
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pci/src/lib.rs
+3 -1
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@@ -12,6 +12,7 @@ extern crate vmm_sys_util;
mod configuration;
mod device;
mod msix;
mod root;
pub use self::configuration::{
@@ -20,7 +21,8 @@ pub use self::configuration::{
PciSubclass,
};
pub use self::device::Error as PciDeviceError;
pub use self::device::{IrqClosure, PciDevice};
pub use self::device::{IrqClosure, MsixClosure, PciDevice};
pub use self::msix::{MsixCap, MsixConfig, MsixTableEntry};
pub use self::root::{PciConfigIo, PciConfigMmio, PciRoot, PciRootError};
/// PCI has four interrupt pins A->D.