Developing DDI kernel drivers

Developing DDI kernel drivers

DDI (Device Driver Interface) is the basic interface used for kernel device drivers for SVR5. This is a topical presentation of information about DDI. Many topics contain pointers to related material in the STREAMS, MDI, and SDI documentation.

The supported $interface value for SVR5 DDI drivers is $interface ddi: 8. The DDI version must be declared in the driver's Master(DSP/4dsp) file.

A DDI kernel driver utilizes:

The driver entry point routines documented in Section D2 manual pages.
The kernel functions documented in Section D3 manual pages.
The kernel structures documented in Section D4 manual pages.
The kernel #defines documented in Section D5 manual pages.

Kernel driver writers should also be familiar with:

Information about general driver development topics is available in Developing device drivers.