Method parse_extended_capabilities

pci/src/vfio.rs:1044–1075

(&mut self)

    }

    fn parse_extended_capabilities(&mut self) {
        let mut current_offset = PCI_CONFIG_EXTENDED_CAPABILITY_OFFSET;

        loop {
            let ext_cap_hdr = self.vfio_wrapper.read_config_dword(current_offset);

            let cap_id: u16 = (ext_cap_hdr & 0xffff) as u16;
            let cap_next: u16 = ((ext_cap_hdr >> 20) & 0xfff) as u16;

            match PciExpressCapabilityId::from(cap_id) {
                PciExpressCapabilityId::AlternativeRoutingIdentificationInterpretation
                | PciExpressCapabilityId::ResizeableBar
                | PciExpressCapabilityId::SingleRootIoVirtualization => {
                    let reg_idx = (current_offset / 4) as usize;
                    self.patches.insert(
                        reg_idx,
                        ConfigPatch {
                            mask: 0x0000_ffff,
                            patch: PciExpressCapabilityId::NullCapability as u32,
                        },
                    );
                }
                _ => {}
            }

            if cap_next == 0 {
                break;
            }

            current_offset = cap_next.into();
        }
    }

    pub(crate) fn enable_intx(&mut self) -> Result<(), VfioPciError> {
        if let Some(intx) = &mut self.interrupt.intx