man pages section 9: DDI and DKI Kernel Functions

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Updated: July 2014
 
 

ddi_dev_nregs(9F)

Name

ddi_dev_nregs - return the number of register sets a device has

Synopsis

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

int ddi_dev_nregs(dev_info_t *dip, int *resultp);

Interface Level

Solaris DDI specific (Solaris DDI).

Parameters

dip

A pointer to the device's dev_info structure.

resultp

Pointer to an integer that holds the number of register sets on return.

Description

The ddi_dev_nregs() function returns the number of sets of registers the device has.

Return Values

The ddi_dev_nregs() function returns:

DDI_SUCCESS

A successful return. The number of register sets is returned in resultp.

DDI_FAILURE

The device has no registers.

Context

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

See Also

ddi_dev_nintrs(9F), ddi_dev_regsize(9F)

Writing Device Drivers for Oracle Solaris 11.2