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vmm: Use a vector to store multiple segments

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For now this still contains just one segment but is expanding in
preparation for more segments.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2021-10-05 14:55:15 +01:00
parent b4fc02857f
commit fbb385834a
1 changed files with 27 additions and 26 deletions
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53
vmm/src/device_manager.rs
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@ -826,7 +826,7 @@ pub struct DeviceManager {
// Counter to keep track of the consumed device IDs.
device_id_cnt: Wrapping<usize>,
pci_segment: PciSegment,
pci_segments: Vec<PciSegment>,
#[cfg_attr(target_arch = "aarch64", allow(dead_code))]
// MSI Interrupt Manager
@ -961,11 +961,11 @@ impl DeviceManager {
vfio_container: None,
iommu_device: None,
iommu_attached_devices: None,
pci_segment: PciSegment::new_default_segment(
pci_segments: vec![PciSegment::new_default_segment(
&address_manager,
start_of_device_area,
end_of_device_area,
)?,
)?],
device_tree,
exit_evt: exit_evt.try_clone().map_err(DeviceManagerError::EventFd)?,
reset_evt: reset_evt.try_clone().map_err(DeviceManagerError::EventFd)?,
@ -1189,12 +1189,13 @@ impl DeviceManager {
}
#[cfg(target_arch = "x86_64")]
self.bus_devices
.push(Arc::clone(self.pci_segment.pci_config_io.as_ref().unwrap())
as Arc<Mutex<dyn BusDevice>>);
self.bus_devices.push(
Arc::clone(self.pci_segments[0].pci_config_io.as_ref().unwrap())
as Arc<Mutex<dyn BusDevice>>,
);
self.bus_devices
.push(Arc::clone(&self.pci_segment.pci_config_mmio) as Arc<Mutex<dyn BusDevice>>);
.push(Arc::clone(&self.pci_segments[0].pci_config_mmio) as Arc<Mutex<dyn BusDevice>>);
Ok(())
}
@ -2803,7 +2804,7 @@ impl DeviceManager {
&mut self,
device_cfg: &mut DeviceConfig,
) -> DeviceManagerResult<(u32, String)> {
let pci_device_bdf = self.pci_segment.next_device_bdf()?;
let pci_device_bdf = self.pci_segments[0].next_device_bdf()?;
let mut needs_dma_mapping = false;
@ -2884,7 +2885,7 @@ impl DeviceManager {
Some(
legacy_interrupt_manager
.create_group(LegacyIrqGroupConfig {
irq: self.pci_segment.pci_irq_slots[(pci_device_bdf >> 3) as usize]
irq: self.pci_segments[0].pci_irq_slots[(pci_device_bdf >> 3) as usize]
as InterruptIndex,
})
.map_err(DeviceManagerError::CreateInterruptGroup)?,
@ -2963,7 +2964,7 @@ impl DeviceManager {
.allocate_bars(&mut self.address_manager.allocator.lock().unwrap())
.map_err(DeviceManagerError::AllocateBars)?;
let mut pci_bus = self.pci_segment.pci_bus.lock().unwrap();
let mut pci_bus = self.pci_segments[0].pci_bus.lock().unwrap();
pci_bus
.add_device(bdf, pci_device)
@ -3007,14 +3008,14 @@ impl DeviceManager {
&mut self,
device_cfg: &mut UserDeviceConfig,
) -> DeviceManagerResult<(u32, String)> {
let pci_device_bdf = self.pci_segment.next_device_bdf()?;
let pci_device_bdf = self.pci_segments[0].next_device_bdf()?;
let legacy_interrupt_group =
if let Some(legacy_interrupt_manager) = &self.legacy_interrupt_manager {
Some(
legacy_interrupt_manager
.create_group(LegacyIrqGroupConfig {
irq: self.pci_segment.pci_irq_slots[(pci_device_bdf >> 3) as usize]
irq: self.pci_segments[0].pci_irq_slots[(pci_device_bdf >> 3) as usize]
as InterruptIndex,
})
.map_err(DeviceManagerError::CreateInterruptGroup)?,
@ -3132,7 +3133,7 @@ impl DeviceManager {
.pci_bdf
.ok_or(DeviceManagerError::MissingDeviceNodePciBdf)?;
self.pci_segment
self.pci_segments[0]
.pci_bus
.lock()
.unwrap()
@ -3155,7 +3156,7 @@ impl DeviceManager {
(pci_device_bdf, config_bar_addr)
} else {
let pci_device_bdf = self.pci_segment.next_device_bdf()?;
let pci_device_bdf = self.pci_segments[0].next_device_bdf()?;
(pci_device_bdf, None)
};
@ -3259,7 +3260,7 @@ impl DeviceManager {
#[cfg(target_arch = "x86_64")]
// Used to provide a fast path for handling PIO exits
pub fn pci_config_io(&self) -> Arc<Mutex<PciConfigIo>> {
Arc::clone(self.pci_segment.pci_config_io.as_ref().unwrap())
Arc::clone(self.pci_segments[0].pci_config_io.as_ref().unwrap())
}
pub fn console(&self) -> &Arc<Console> {
@ -3355,7 +3356,7 @@ impl DeviceManager {
let (device_id, device_name) = self.add_passthrough_device(device_cfg)?;
// Update the PCIU bitmap
self.pci_segment.pci_devices_up |= 1 << (device_id >> 3);
self.pci_segments[0].pci_devices_up |= 1 << (device_id >> 3);
Ok(PciDeviceInfo {
id: device_name,
@ -3370,7 +3371,7 @@ impl DeviceManager {
let (device_id, device_name) = self.add_vfio_user_device(device_cfg)?;
// Update the PCIU bitmap
self.pci_segment.pci_devices_up |= 1 << (device_id >> 3);
self.pci_segments[0].pci_devices_up |= 1 << (device_id >> 3);
Ok(PciDeviceInfo {
id: device_name,
@ -3429,7 +3430,7 @@ impl DeviceManager {
}
// Update the PCID bitmap
self.pci_segment.pci_devices_down |= 1 << (pci_device_bdf >> 3);
self.pci_segments[0].pci_devices_down |= 1 << (pci_device_bdf >> 3);
Ok(())
}
@ -3439,7 +3440,7 @@ impl DeviceManager {
let pci_device_bdf = (device_id as u32) << 3;
// Give the PCI device ID back to the PCI bus.
self.pci_segment
self.pci_segments[0]
.pci_bus
.lock()
.unwrap()
@ -3514,7 +3515,7 @@ impl DeviceManager {
.map_err(DeviceManagerError::FreePciBars)?;
// Remove the device from the PCI bus
self.pci_segment
self.pci_segments[0]
.pci_bus
.lock()
.unwrap()
@ -3585,7 +3586,7 @@ impl DeviceManager {
let device_id = self.add_virtio_pci_device(device, &None, id.clone())?;
// Update the PCIU bitmap
self.pci_segment.pci_devices_up |= 1 << (device_id >> 3);
self.pci_segments[0].pci_devices_up |= 1 << (device_id >> 3);
Ok(PciDeviceInfo { id, bdf: device_id })
}
@ -3902,7 +3903,7 @@ impl Aml for DeviceManager {
.unwrap()
.to_aml_bytes();
let pci_dsdt_data = self.pci_segment.to_aml_bytes();
let pci_dsdt_data = self.pci_segments[0].to_aml_bytes();
bytes.extend_from_slice(pci_dsdt_data.as_slice());
bytes.extend_from_slice(mbrd_dsdt_data.as_slice());
if self.config.lock().unwrap().serial.mode != ConsoleOutputMode::Off {
@ -4056,15 +4057,15 @@ impl BusDevice for DeviceManager {
match offset {
PCIU_FIELD_OFFSET => {
assert!(data.len() == PCIU_FIELD_SIZE);
data.copy_from_slice(&self.pci_segment.pci_devices_up.to_le_bytes());
data.copy_from_slice(&self.pci_segments[0].pci_devices_up.to_le_bytes());
// Clear the PCIU bitmap
self.pci_segment.pci_devices_up = 0;
self.pci_segments[0].pci_devices_up = 0;
}
PCID_FIELD_OFFSET => {
assert!(data.len() == PCID_FIELD_SIZE);
data.copy_from_slice(&self.pci_segment.pci_devices_down.to_le_bytes());
data.copy_from_slice(&self.pci_segments[0].pci_devices_down.to_le_bytes());
// Clear the PCID bitmap
self.pci_segment.pci_devices_down = 0;
self.pci_segments[0].pci_devices_down = 0;
}
B0EJ_FIELD_OFFSET => {
assert!(data.len() == B0EJ_FIELD_SIZE);