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Kernel Functions for Drivers

ddi_dev_nregs(9F)

NAME

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

ddi_dev_nregs() returns:

DDI_SUCCESS: A successful return. The number of register sets is returned in resultp.
DDI_FAILURE: The device has no registers.

ddi_dev_nregs() can be called from user or interrupt context.