opensolaris man page for ddi_driver_major

ddi_driver_major(9F)					   Kernel Functions for Drivers 				      ddi_driver_major(9F)

NAME
       ddi_driver_major - return driver's major device number

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       major_t ddi_driver_major(dev_info_t *dip);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI)

DESCRIPTION
       ddi_driver_major()  returns  the major device number for the driver associated with the supplied dev_info node. This value can then be used
       as an argument to makedevice(9F) to construct a complete dev_t.

PARAMETERS
       dip    A pointer to the device's dev_info structure.

RETURN VALUES
       ddi_driver_major() returns the major number of the driver bound to a device, if any, or DDI_MAJOR_T_NONE otherwise.

CONTEXT
       ddi_driver_major() can be called from kernel or interrupt context.

SEE ALSO
       ddi_driver_name(9F)

       Writing Device Drivers

SunOS 5.11							    18 Jun 2001 					      ddi_driver_major(9F)