ddi_dev_nregs(9F)

man pages section 9: DDI and DKI Kernel Functions

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);

Solaris DDI specific (Solaris 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.