Device Driver Interface APIs

This layer of interfaces is implemented by the device drivers, and is built upon the lower layer of services (bus driver interfaces). This set of device drivers provides different interfaces for each different class/type of device. Typically, there are different interfaces for timer devices, UART devices, Ethernet devices and so on.

Each of these APIs may be used by the driver's client application to manage the associated devices. Note that the ddi(9) manpage gives an entry point to a detailed description of all DDI APIs.