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

ddi_dev_nregs - return the number of register sets a device has

#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_dev_nregs(dev_info_t *dip, int *resultp);

illumos DDI specific (illumos DDI).

dip
A pointer to the device's dev_info structure.

resultp

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

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

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.

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

ddi_dev_nintrs(9F), ddi_dev_regsize(9F)

Writing Device Drivers

January 16, 2006 OmniOS