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Copyright (c) 2006, Sun Microsystems, Inc.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
Copyright (c) 2006, Sun Microsystems, Inc.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
ddi_dev_nregs 9F "16 Jan 2006" "SunOS 5.11" "Kernel Functions for Drivers"
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