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vmm: Retrieve PCI resources for VFIO and vfio-user devices

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Relying on the function introduced recently to get the PCI resources and
handle the restore case, both VFIO and vfio-user device creation paths
now have access to PCI resources, which can be provided to the function
add_pci_device().

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-04-07 16:36:44 +02:00
parent 0f12fe9b3b
commit 4f172ae4b6
1 changed files with 30 additions and 30 deletions
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60
vmm/src/device_manager.rs
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@ -3079,8 +3079,20 @@ impl DeviceManager {
&mut self,
device_cfg: &mut DeviceConfig,
) -> DeviceManagerResult<(PciBdf, String)> {
let pci_segment_id = device_cfg.pci_segment;
let pci_device_bdf = self.pci_segments[pci_segment_id as usize].next_device_bdf()?;
let vfio_name = if let Some(id) = &device_cfg.id {
if self.device_tree.lock().unwrap().contains_key(id) {
return Err(DeviceManagerError::DeviceIdAlreadyInUse);
}
id.clone()
} else {
let id = self.next_device_name(VFIO_DEVICE_NAME_PREFIX)?;
device_cfg.id = Some(id.clone());
id
};
let (pci_segment_id, pci_device_bdf, resources) =
self.pci_resources(&vfio_name, device_cfg.pci_segment)?;
let mut needs_dma_mapping = false;
@ -3182,18 +3194,6 @@ impl DeviceManager {
)
.map_err(DeviceManagerError::VfioPciCreate)?;
let vfio_name = if let Some(id) = &device_cfg.id {
if self.device_tree.lock().unwrap().contains_key(id) {
return Err(DeviceManagerError::DeviceIdAlreadyInUse);
}
id.clone()
} else {
let id = self.next_device_name(VFIO_DEVICE_NAME_PREFIX)?;
device_cfg.id = Some(id.clone());
id
};
let vfio_pci_device = Arc::new(Mutex::new(vfio_pci_device));
self.add_pci_device(
@ -3201,7 +3201,7 @@ impl DeviceManager {
vfio_pci_device.clone(),
pci_segment_id,
pci_device_bdf,
None,
resources,
)?;
vfio_pci_device
@ -3300,8 +3300,20 @@ impl DeviceManager {
&mut self,
device_cfg: &mut UserDeviceConfig,
) -> DeviceManagerResult<(PciBdf, String)> {
let pci_segment_id = device_cfg.pci_segment;
let pci_device_bdf = self.pci_segments[pci_segment_id as usize].next_device_bdf()?;
let vfio_user_name = if let Some(id) = &device_cfg.id {
if self.device_tree.lock().unwrap().contains_key(id) {
return Err(DeviceManagerError::DeviceIdAlreadyInUse);
}
id.clone()
} else {
let id = self.next_device_name(VFIO_USER_DEVICE_NAME_PREFIX)?;
device_cfg.id = Some(id.clone());
id
};
let (pci_segment_id, pci_device_bdf, resources) =
self.pci_resources(&vfio_user_name, device_cfg.pci_segment)?;
let legacy_interrupt_group =
if let Some(legacy_interrupt_manager) = &self.legacy_interrupt_manager {
@ -3361,24 +3373,12 @@ impl DeviceManager {
let vfio_user_pci_device = Arc::new(Mutex::new(vfio_user_pci_device));
let vfio_user_name = if let Some(id) = &device_cfg.id {
if self.device_tree.lock().unwrap().contains_key(id) {
return Err(DeviceManagerError::DeviceIdAlreadyInUse);
}
id.clone()
} else {
let id = self.next_device_name(VFIO_USER_DEVICE_NAME_PREFIX)?;
device_cfg.id = Some(id.clone());
id
};
self.add_pci_device(
vfio_user_pci_device.clone(),
vfio_user_pci_device.clone(),
pci_segment_id,
pci_device_bdf,
None,
resources,
)?;
let mut node = device_node!(vfio_user_name);