75     irq_index: u16,     //要install的中断号在PCI设备中的irq_vector的index  field
278             if msg.irq_common_message.irq_index as usize > irq_vector.len() {  in irq_install()
280                     msg.irq_common_message.irq_index,  in irq_install()
321                         self.irq_vector_mut().unwrap()[msg.irq_common_message.irq_index as usize];  in msi_install()
344                     if common_msg.irq_index == 0 {  in msi_install()
470                         self.irq_vector_mut().unwrap()[msg.irq_common_message.irq_index as usize];  in msix_install()
511                         + msg.irq_common_message.irq_index as usize * size_of::<MsixEntry>();  in msix_install()
651     fn irq_mask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in irq_mask()
655                     return self.msix_mask(irq_index);  in irq_mask()
658                     return self.msi_mask(irq_index);  in irq_mask()
673     fn msi_mask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in msi_mask()
682                     if irq_index >= irq_max_num {  in msi_mask()
684                             irq_index,  in msi_mask()
694                                 mask |= 1 << irq_index;  in msi_mask()
706                                 mask |= 1 << irq_index;  in msi_mask()
731     fn msix_mask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in msix_mask()
740                     if irq_index >= irq_max_num {  in msix_mask()
742                             irq_index,  in msix_mask()
752                         + irq_index as usize * size_of::<MsixEntry>();  in msix_mask()
772     fn irq_unmask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in irq_unmask()
776                     return self.msix_unmask(irq_index);  in irq_unmask()
779                     return self.msi_unmask(irq_index);  in irq_unmask()
794     fn msi_unmask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in msi_unmask()
803                     if irq_index >= irq_max_num {  in msi_unmask()
805                             irq_index,  in msi_unmask()
815                                 mask &= !(1 << irq_index);  in msi_unmask()
827                                 mask &= !(1 << irq_index);  in msi_unmask()
851     fn msix_unmask(&mut self, irq_index: u16) -> Result<u8, PciError> {  in msix_unmask()
860                     if irq_index >= irq_max_num {  in msix_unmask()
862                             irq_index,  in msix_unmask()
872                         + irq_index as usize * size_of::<MsixEntry>();  in msix_unmask()
893     fn irq_check_pending(&mut self, irq_index: u16) -> Result<bool, PciError> {  in irq_check_pending()
897                     return self.msix_check_pending(irq_index);  in irq_check_pending()
900                     return self.msi_check_pending(irq_index);  in irq_check_pending()
916     fn msi_check_pending(&mut self, irq_index: u16) -> Result<bool, PciError> {  in msi_check_pending()
925                     if irq_index >= irq_max_num {  in msi_check_pending()
927                             irq_index,  in msi_check_pending()
937                                 pend &= 1 << irq_index;  in msi_check_pending()
945                                 pend &= 1 << irq_index;  in msi_check_pending()
965     fn msix_check_pending(&mut self, irq_index: u16) -> Result<bool, PciError> {  in msix_check_pending()
974                     if irq_index >= irq_max_num {  in msix_check_pending()
976                             irq_index,  in msix_check_pending()
986                         + (irq_index as usize / 64) * size_of::<PendingEntry>();  in msix_check_pending()
989                     return Ok(pending_entry & (1 << (irq_index as u64 % 64)) != 0);  in msix_check_pending()