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 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
illumos DDI specific (illumos 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
January 16, 2006 DDI_DEV_NREGS(9F)