Interrupts and Interrupt Handling
Some devices that attach to a PCI bus, to a PCI Express bus, or to other backplane buses generate interrupts to signal the processor—and thus, the operating system—that they require service. The function driver for such a device must include code that enables and disables interrupts in the device hardware and that responds to interrupts when they occur during device operation—typically to signal that the device has completed a requested operation.
Devices that attach to protocol buses such as USB, IEEE 1394, and Bluetooth do not generate interrupts, so their drivers do not require interrupt-handling code.
Line-based and Message-based Interrupts Most devices generate line-based interrupts by sending an electrical ...
Get Developing Drivers with the Windows® Driver Foundation now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
