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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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pci: vfio: Split common data into VfioCommon struct
Split data that will need to be common between VfioPciDevice and VfioUserPciDevice into a common struct. Currently this has no methods but they will be added soon. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
parent
a0e48a87b8
commit
d27ea34a2d
101
pci/src/vfio.rs
101
pci/src/vfio.rs
@ -300,6 +300,12 @@ impl VfioPciConfig for VfioPciDeviceConfig {
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}
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}
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}
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}
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struct VfioCommon {
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configuration: PciConfiguration,
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mmio_regions: Vec<MmioRegion>,
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interrupt: Interrupt,
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}
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/// VfioPciDevice represents a VFIO PCI device.
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/// VfioPciDevice represents a VFIO PCI device.
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/// This structure implements the BusDevice and PciDevice traits.
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/// This structure implements the BusDevice and PciDevice traits.
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///
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///
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@ -311,9 +317,7 @@ pub struct VfioPciDevice {
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device: Arc<VfioDevice>,
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device: Arc<VfioDevice>,
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container: Arc<VfioContainer>,
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container: Arc<VfioContainer>,
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vfio_pci_configuration: VfioPciDeviceConfig,
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vfio_pci_configuration: VfioPciDeviceConfig,
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configuration: PciConfiguration,
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common: VfioCommon,
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mmio_regions: Vec<MmioRegion>,
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interrupt: Interrupt,
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iommu_attached: bool,
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iommu_attached: bool,
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}
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}
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@ -349,13 +353,15 @@ impl VfioPciDevice {
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vm: vm.clone(),
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vm: vm.clone(),
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device,
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device,
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container,
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container,
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configuration,
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vfio_pci_configuration,
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vfio_pci_configuration,
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mmio_regions: Vec::new(),
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common: VfioCommon {
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interrupt: Interrupt {
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mmio_regions: Vec::new(),
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intx: None,
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configuration,
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msi: None,
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interrupt: Interrupt {
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msix: None,
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intx: None,
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msi: None,
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msix: None,
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},
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},
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},
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iommu_attached,
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iommu_attached,
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};
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};
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@ -372,7 +378,7 @@ impl VfioPciDevice {
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}
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}
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fn enable_intx(&mut self) -> Result<()> {
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fn enable_intx(&mut self) -> Result<()> {
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if let Some(intx) = &mut self.interrupt.intx {
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if let Some(intx) = &mut self.common.interrupt.intx {
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if !intx.enabled {
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if !intx.enabled {
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if let Some(eventfd) = intx.interrupt_source_group.notifier(0) {
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if let Some(eventfd) = intx.interrupt_source_group.notifier(0) {
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self.device
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self.device
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@ -390,7 +396,7 @@ impl VfioPciDevice {
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}
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}
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fn disable_intx(&mut self) {
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fn disable_intx(&mut self) {
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if let Some(intx) = &mut self.interrupt.intx {
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if let Some(intx) = &mut self.common.interrupt.intx {
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if intx.enabled {
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if intx.enabled {
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if let Err(e) = self.device.disable_irq(VFIO_PCI_INTX_IRQ_INDEX) {
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if let Err(e) = self.device.disable_irq(VFIO_PCI_INTX_IRQ_INDEX) {
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error!("Could not disable INTx: {}", e);
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error!("Could not disable INTx: {}", e);
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@ -402,7 +408,7 @@ impl VfioPciDevice {
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}
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}
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fn enable_msi(&self) -> Result<()> {
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fn enable_msi(&self) -> Result<()> {
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if let Some(msi) = &self.interrupt.msi {
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if let Some(msi) = &self.common.interrupt.msi {
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let mut irq_fds: Vec<EventFd> = Vec::new();
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let mut irq_fds: Vec<EventFd> = Vec::new();
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for i in 0..msi.cfg.num_enabled_vectors() {
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for i in 0..msi.cfg.num_enabled_vectors() {
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if let Some(eventfd) = msi.interrupt_source_group.notifier(i as InterruptIndex) {
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if let Some(eventfd) = msi.interrupt_source_group.notifier(i as InterruptIndex) {
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@ -427,7 +433,7 @@ impl VfioPciDevice {
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}
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}
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fn enable_msix(&self) -> Result<()> {
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fn enable_msix(&self) -> Result<()> {
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if let Some(msix) = &self.interrupt.msix {
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if let Some(msix) = &self.common.interrupt.msix {
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let mut irq_fds: Vec<EventFd> = Vec::new();
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let mut irq_fds: Vec<EventFd> = Vec::new();
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for i in 0..msix.bar.table_entries.len() {
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for i in 0..msix.bar.table_entries.len() {
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if let Some(eventfd) = msix.interrupt_source_group.notifier(i as InterruptIndex) {
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if let Some(eventfd) = msix.interrupt_source_group.notifier(i as InterruptIndex) {
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@ -464,7 +470,7 @@ impl VfioPciDevice {
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}
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}
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if let Some(interrupt_source_group) = legacy_interrupt_group {
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if let Some(interrupt_source_group) = legacy_interrupt_group {
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self.interrupt.intx = Some(VfioIntx {
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self.common.interrupt.intx = Some(VfioIntx {
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interrupt_source_group,
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interrupt_source_group,
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enabled: false,
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enabled: false,
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});
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});
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@ -507,7 +513,7 @@ impl VfioPciDevice {
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let msix_config = MsixConfig::new(msix_cap.table_size(), interrupt_source_group.clone(), 0);
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let msix_config = MsixConfig::new(msix_cap.table_size(), interrupt_source_group.clone(), 0);
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self.interrupt.msix = Some(VfioMsix {
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self.common.interrupt.msix = Some(VfioMsix {
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bar: msix_config,
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bar: msix_config,
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cap: msix_cap,
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cap: msix_cap,
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cap_offset: cap.into(),
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cap_offset: cap.into(),
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@ -533,7 +539,7 @@ impl VfioPciDevice {
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let msi_config = MsiConfig::new(msg_ctl, interrupt_source_group.clone());
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let msi_config = MsiConfig::new(msg_ctl, interrupt_source_group.clone());
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self.interrupt.msi = Some(VfioMsi {
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self.common.interrupt.msi = Some(VfioMsi {
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cfg: msi_config,
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cfg: msi_config,
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cap_offset: cap.into(),
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cap_offset: cap.into(),
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interrupt_source_group,
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interrupt_source_group,
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@ -582,7 +588,7 @@ impl VfioPciDevice {
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}
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}
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fn update_msi_capabilities(&mut self, offset: u64, data: &[u8]) -> Result<()> {
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fn update_msi_capabilities(&mut self, offset: u64, data: &[u8]) -> Result<()> {
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match self.interrupt.update_msi(offset, data) {
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match self.common.interrupt.update_msi(offset, data) {
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Some(InterruptUpdateAction::EnableMsi) => {
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Some(InterruptUpdateAction::EnableMsi) => {
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// Disable INTx before we can enable MSI
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// Disable INTx before we can enable MSI
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self.disable_intx();
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self.disable_intx();
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@ -600,7 +606,7 @@ impl VfioPciDevice {
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}
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}
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fn update_msix_capabilities(&mut self, offset: u64, data: &[u8]) -> Result<()> {
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fn update_msix_capabilities(&mut self, offset: u64, data: &[u8]) -> Result<()> {
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match self.interrupt.update_msix(offset, data) {
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match self.common.interrupt.update_msix(offset, data) {
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Some(InterruptUpdateAction::EnableMsix) => {
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Some(InterruptUpdateAction::EnableMsix) => {
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// Disable INTx before we can enable MSI-X
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// Disable INTx before we can enable MSI-X
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self.disable_intx();
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self.disable_intx();
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@ -618,7 +624,7 @@ impl VfioPciDevice {
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}
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}
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fn find_region(&self, addr: u64) -> Option<MmioRegion> {
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fn find_region(&self, addr: u64) -> Option<MmioRegion> {
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for region in self.mmio_regions.iter() {
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for region in self.common.mmio_regions.iter() {
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if addr >= region.start.raw_value()
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if addr >= region.start.raw_value()
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&& addr < region.start.unchecked_add(region.length).raw_value()
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&& addr < region.start.unchecked_add(region.length).raw_value()
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{
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{
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@ -642,12 +648,12 @@ impl VfioPciDevice {
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{
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{
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let fd = self.device.as_raw_fd();
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let fd = self.device.as_raw_fd();
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for region in self.mmio_regions.iter_mut() {
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for region in self.common.mmio_regions.iter_mut() {
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// We want to skip the mapping of the BAR containing the MSI-X
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// We want to skip the mapping of the BAR containing the MSI-X
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// table even if it is mappable. The reason is we need to trap
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// table even if it is mappable. The reason is we need to trap
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// any access to the MSI-X table and update the GSI routing
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// any access to the MSI-X table and update the GSI routing
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// accordingly.
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// accordingly.
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if let Some(msix) = &self.interrupt.msix {
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if let Some(msix) = &self.common.interrupt.msix {
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if region.index == msix.cap.table_bir() || region.index == msix.cap.pba_bir() {
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if region.index == msix.cap.table_bir() || region.index == msix.cap.pba_bir() {
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continue;
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continue;
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}
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}
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@ -708,7 +714,7 @@ impl VfioPciDevice {
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}
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}
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pub fn unmap_mmio_regions(&mut self) {
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pub fn unmap_mmio_regions(&mut self) {
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for region in self.mmio_regions.iter() {
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for region in self.common.mmio_regions.iter() {
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if let (Some(host_addr), Some(mmap_size), Some(mem_slot)) =
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if let (Some(host_addr), Some(mmap_size), Some(mem_slot)) =
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(region.host_addr, region.mmap_size, region.mem_slot)
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(region.host_addr, region.mmap_size, region.mem_slot)
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{
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{
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@ -761,7 +767,7 @@ impl VfioPciDevice {
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}
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}
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pub fn mmio_regions(&self) -> Vec<MmioRegion> {
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pub fn mmio_regions(&self) -> Vec<MmioRegion> {
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self.mmio_regions.clone()
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self.common.mmio_regions.clone()
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}
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}
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}
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}
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@ -769,19 +775,19 @@ impl Drop for VfioPciDevice {
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fn drop(&mut self) {
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fn drop(&mut self) {
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self.unmap_mmio_regions();
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self.unmap_mmio_regions();
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if let Some(msix) = &self.interrupt.msix {
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if let Some(msix) = &self.common.interrupt.msix {
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if msix.bar.enabled() {
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if msix.bar.enabled() {
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self.disable_msix();
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self.disable_msix();
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}
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}
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}
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}
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if let Some(msi) = &self.interrupt.msi {
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if let Some(msi) = &self.common.interrupt.msi {
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if msi.cfg.enabled() {
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if msi.cfg.enabled() {
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self.disable_msi();
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self.disable_msi();
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}
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}
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}
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}
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if self.interrupt.intx_in_use() {
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if self.common.interrupt.intx_in_use() {
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self.disable_intx();
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self.disable_intx();
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}
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}
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}
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}
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@ -954,17 +960,19 @@ impl PciDevice for VfioPciDevice {
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.set_region_type(region_type);
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.set_region_type(region_type);
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if bar_id == VFIO_PCI_ROM_REGION_INDEX {
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if bar_id == VFIO_PCI_ROM_REGION_INDEX {
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self.configuration
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self.common
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.configuration
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.add_pci_rom_bar(&config, flags & 0x1)
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.add_pci_rom_bar(&config, flags & 0x1)
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.map_err(|e| PciDeviceError::IoRegistrationFailed(bar_addr.raw_value(), e))?;
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.map_err(|e| PciDeviceError::IoRegistrationFailed(bar_addr.raw_value(), e))?;
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} else {
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} else {
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self.configuration
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self.common
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.configuration
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.add_pci_bar(&config)
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.add_pci_bar(&config)
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.map_err(|e| PciDeviceError::IoRegistrationFailed(bar_addr.raw_value(), e))?;
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.map_err(|e| PciDeviceError::IoRegistrationFailed(bar_addr.raw_value(), e))?;
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}
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}
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ranges.push((bar_addr, region_size, region_type));
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ranges.push((bar_addr, region_size, region_type));
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self.mmio_regions.push(MmioRegion {
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self.common.mmio_regions.push(MmioRegion {
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start: bar_addr,
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start: bar_addr,
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length: region_size,
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length: region_size,
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type_: region_type,
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type_: region_type,
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@ -987,7 +995,7 @@ impl PciDevice for VfioPciDevice {
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&mut self,
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&mut self,
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allocator: &mut SystemAllocator,
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allocator: &mut SystemAllocator,
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) -> std::result::Result<(), PciDeviceError> {
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) -> std::result::Result<(), PciDeviceError> {
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for region in self.mmio_regions.iter() {
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for region in self.common.mmio_regions.iter() {
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match region.type_ {
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match region.type_ {
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PciBarRegionType::IoRegion => {
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PciBarRegionType::IoRegion => {
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#[cfg(target_arch = "x86_64")]
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#[cfg(target_arch = "x86_64")]
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@ -1021,7 +1029,8 @@ impl PciDevice for VfioPciDevice {
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// We keep our local cache updated with the BARs.
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// We keep our local cache updated with the BARs.
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// We'll read it back from there when the guest is asking
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// We'll read it back from there when the guest is asking
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// for BARs (see read_config_register()).
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// for BARs (see read_config_register()).
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self.configuration
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self.common
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.configuration
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.write_config_register(reg_idx, offset, data);
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.write_config_register(reg_idx, offset, data);
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return None;
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return None;
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}
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}
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@ -1032,7 +1041,7 @@ impl PciDevice for VfioPciDevice {
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// update our local cache accordingly.
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// update our local cache accordingly.
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// Depending on how the capabilities are modified, this could
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// Depending on how the capabilities are modified, this could
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// trigger a VFIO MSI or MSI-X toggle.
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// trigger a VFIO MSI or MSI-X toggle.
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if let Some((cap_id, cap_base)) = self.interrupt.accessed(reg) {
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if let Some((cap_id, cap_base)) = self.common.interrupt.accessed(reg) {
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let cap_offset: u64 = reg - cap_base + offset;
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let cap_offset: u64 = reg - cap_base + offset;
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match cap_id {
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match cap_id {
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PciCapabilityId::MessageSignalledInterrupts => {
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PciCapabilityId::MessageSignalledInterrupts => {
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@ -1071,7 +1080,7 @@ impl PciDevice for VfioPciDevice {
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if (PCI_CONFIG_BAR0_INDEX..PCI_CONFIG_BAR0_INDEX + BAR_NUMS).contains(®_idx)
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if (PCI_CONFIG_BAR0_INDEX..PCI_CONFIG_BAR0_INDEX + BAR_NUMS).contains(®_idx)
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|| reg_idx == PCI_ROM_EXP_BAR_INDEX
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|| reg_idx == PCI_ROM_EXP_BAR_INDEX
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{
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{
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return self.configuration.read_reg(reg_idx);
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return self.common.configuration.read_reg(reg_idx);
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}
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}
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// Since we don't support passing multi-functions devices, we should
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// Since we don't support passing multi-functions devices, we should
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@ -1094,7 +1103,9 @@ impl PciDevice for VfioPciDevice {
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reg_idx: usize,
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reg_idx: usize,
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data: &[u8],
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data: &[u8],
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) -> Option<BarReprogrammingParams> {
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) -> Option<BarReprogrammingParams> {
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self.configuration.detect_bar_reprogramming(reg_idx, data)
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self.common
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.configuration
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.detect_bar_reprogramming(reg_idx, data)
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}
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}
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fn read_bar(&mut self, base: u64, offset: u64, data: &mut [u8]) {
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fn read_bar(&mut self, base: u64, offset: u64, data: &mut [u8]) {
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@ -1102,8 +1113,12 @@ impl PciDevice for VfioPciDevice {
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if let Some(region) = self.find_region(addr) {
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if let Some(region) = self.find_region(addr) {
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let offset = addr - region.start.raw_value();
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let offset = addr - region.start.raw_value();
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if self.interrupt.msix_table_accessed(region.index, offset) {
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if self
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self.interrupt.msix_read_table(offset, data);
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.common
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.interrupt
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.msix_table_accessed(region.index, offset)
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{
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self.common.interrupt.msix_read_table(offset, data);
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} else {
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} else {
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self.device.region_read(region.index, data, offset);
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self.device.region_read(region.index, data, offset);
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}
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}
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@ -1112,7 +1127,7 @@ impl PciDevice for VfioPciDevice {
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// INTx EOI
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// INTx EOI
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// The guest reading from the BAR potentially means the interrupt has
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// The guest reading from the BAR potentially means the interrupt has
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// been received and can be acknowledged.
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// been received and can be acknowledged.
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if self.interrupt.intx_in_use() {
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if self.common.interrupt.intx_in_use() {
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if let Err(e) = self.device.unmask_irq(VFIO_PCI_INTX_IRQ_INDEX) {
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if let Err(e) = self.device.unmask_irq(VFIO_PCI_INTX_IRQ_INDEX) {
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error!("Failed unmasking INTx IRQ: {}", e);
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error!("Failed unmasking INTx IRQ: {}", e);
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}
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}
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@ -1125,8 +1140,12 @@ impl PciDevice for VfioPciDevice {
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let offset = addr - region.start.raw_value();
|
let offset = addr - region.start.raw_value();
|
||||||
|
|
||||||
// If the MSI-X table is written to, we need to update our cache.
|
// If the MSI-X table is written to, we need to update our cache.
|
||||||
if self.interrupt.msix_table_accessed(region.index, offset) {
|
if self
|
||||||
self.interrupt.msix_write_table(offset, data);
|
.common
|
||||||
|
.interrupt
|
||||||
|
.msix_table_accessed(region.index, offset)
|
||||||
|
{
|
||||||
|
self.common.interrupt.msix_write_table(offset, data);
|
||||||
} else {
|
} else {
|
||||||
self.device.region_write(region.index, data, offset);
|
self.device.region_write(region.index, data, offset);
|
||||||
}
|
}
|
||||||
@ -1135,7 +1154,7 @@ impl PciDevice for VfioPciDevice {
|
|||||||
// INTx EOI
|
// INTx EOI
|
||||||
// The guest writing to the BAR potentially means the interrupt has
|
// The guest writing to the BAR potentially means the interrupt has
|
||||||
// been received and can be acknowledged.
|
// been received and can be acknowledged.
|
||||||
if self.interrupt.intx_in_use() {
|
if self.common.interrupt.intx_in_use() {
|
||||||
if let Err(e) = self.device.unmask_irq(VFIO_PCI_INTX_IRQ_INDEX) {
|
if let Err(e) = self.device.unmask_irq(VFIO_PCI_INTX_IRQ_INDEX) {
|
||||||
error!("Failed unmasking INTx IRQ: {}", e);
|
error!("Failed unmasking INTx IRQ: {}", e);
|
||||||
}
|
}
|
||||||
@ -1145,7 +1164,7 @@ impl PciDevice for VfioPciDevice {
|
|||||||
}
|
}
|
||||||
|
|
||||||
fn move_bar(&mut self, old_base: u64, new_base: u64) -> result::Result<(), io::Error> {
|
fn move_bar(&mut self, old_base: u64, new_base: u64) -> result::Result<(), io::Error> {
|
||||||
for region in self.mmio_regions.iter_mut() {
|
for region in self.common.mmio_regions.iter_mut() {
|
||||||
if region.start.raw_value() == old_base {
|
if region.start.raw_value() == old_base {
|
||||||
region.start = GuestAddress(new_base);
|
region.start = GuestAddress(new_base);
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user