hypervisor, vm-device: Relocate InterruptSourceConfig

Move this enum from vm-device to hypervisor crate so that hypervisor
crate does not gain an extra dependency.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

hypervisor/src/vm.rs

@@ -28,7 +28,6 @@ use kvm_ioctls::Cap;
 use std::fs::File;
 use std::sync::Arc;
 use thiserror::Error;
-use vm_device::interrupt::InterruptSourceConfig;
 use vmm_sys_util::eventfd::EventFd;
 
 ///
@@ -217,6 +216,39 @@ pub enum HypervisorVmError {
 ///
 pub type Result<T> = std::result::Result<T, HypervisorVmError>;
 
+/// Configuration data for legacy interrupts.
+///
+/// On x86 platforms, legacy interrupts means those interrupts routed through PICs or IOAPICs.
+#[derive(Copy, Clone, Debug)]
+pub struct LegacyIrqSourceConfig {
+    pub irqchip: u32,
+    pub pin: u32,
+}
+
+/// Configuration data for MSI/MSI-X interrupts.
+///
+/// On x86 platforms, these interrupts are vectors delivered directly to the LAPIC.
+#[derive(Copy, Clone, Debug, Default)]
+pub struct MsiIrqSourceConfig {
+    /// High address to delivery message signaled interrupt.
+    pub high_addr: u32,
+    /// Low address to delivery message signaled interrupt.
+    pub low_addr: u32,
+    /// Data to write to delivery message signaled interrupt.
+    pub data: u32,
+    /// Unique ID of the device to delivery message signaled interrupt.
+    pub devid: u32,
+}
+
+/// Configuration data for an interrupt source.
+#[derive(Copy, Clone, Debug)]
+pub enum InterruptSourceConfig {
+    /// Configuration data for Legacy interrupts.
+    LegacyIrq(LegacyIrqSourceConfig),
+    /// Configuration data for PciMsi, PciMsix and generic MSI interrupts.
+    MsiIrq(MsiIrqSourceConfig),
+}
+
 ///
 /// Trait to represent a Vm
 ///