windows驱动开发-基于WDM的PCIe DMA驱动

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访问MEM IO资源

Mapping Bus-Relative Addresses to Virtual Addresses

连接中断

Servicing Interrupts

Registering an ISR

Using Message-Signaled Interrupts

Removing an ISR

IoConnectInterrupt
MSI必须使用 IoConnectInterruptEx，参考WdmlibIoConnectInterruptEx

#define IoConnectInterruptEx WdmlibIoConnectInterruptEx
NTSTATUS WdmlibIoConnectInterruptEx(
  PIO_CONNECT_INTERRUPT_PARAMETERS Parameters
);

IO_CONNECT_INTERRUPT_PARAMETERS 的构造参考Using the CONNECT_MESSAGE_BASED Version of IoConnectInterruptEx

Using the CONNECT_LINE_BASED Version of IoConnectInterruptEx
Using the CONNECT_FULLY_SPECIFIED Version of IoConnectInterruptEx

DPC

DPC Objects and DPCs
有两种DPC，一种是WDM驱动集成的DpcForIsr，使用方法参考Registering and Queuing a DpcForIsr Routine，第二个是CustomDpc，参考Registering and Queuing a CustomDpc Routine，CustomDpc又分为CustomThreadedDpc和CustomTimerDpc， CustomThreadedDpc参考Threaded DPCsCustomTimerDpc参考KeXxxTimer Routines, KTIMER Objects, and DPCs。