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

NAME

       ddi_dev_is_sid - tell whether a device is self-identifying

SYNOPSIS

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

       int ddi_dev_is_sid(dev_info_t *dip);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       dip    A pointer to the device's dev_info structure.

DESCRIPTION

       The ddi_dev_is_sid() function tells the caller whether the device described by dip is self-identifying, that is, a device that can unequiv-
       ocally tell the system that it exists. This is useful for drivers that support both a self-identifying as well  as  a  non-self-identifying
       variants of a device (and therefore must be probed).

RETURN VALUES

       DDI_SUCCESS    Device is self-identifying.

       DDI_FAILURE    Device is not self-identifying.

CONTEXT

       The ddi_dev_is_sid() function can be called from user, interrupt, or kernel context.

EXAMPLES

	 1   ...
	 2   int
	 3   bz_probe(dev_info_t *dip)
	 4   {
	 5    ...
	 6    if (ddi_dev_is_sid(dip) == DDI_SUCCESS) {
	 7	   /*
	 8	    * This is the self-identifying version (OpenBoot).
	 9	    * No need to probe for it because we know it is there.
	 10	    * The existence of dip && ddi_dev_is_sid() proves this.
	 11	    */
	 12		return (DDI_PROBE_DONTCARE);
	 13   }
	 14   /*
	 15    * Not a self-identifying variant of the device. Now we have to
	 16    * do some work to see whether it is really attached to the
	 17    * system.
	 18    */
	 19  ...

SEE ALSO

       probe(9E) Writing Device Drivers

SunOS 5.11							    16 Jan 2006 						ddi_dev_is_sid(9F)