'\" te
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.TH DDI_GET_DRIVER_PRIVATE 9F "Jan 16, 2006"
.SH NAME
ddi_get_driver_private, ddi_set_driver_private \- get or set the address of the
device's private data area
.SH SYNOPSIS
.nf
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>



\fBvoid\fR \fBddi_set_driver_private\fR(\fBdev_info_t *\fR\fIdip\fR, \fBvoid\fR *\fIdata\fR);
.fi

.LP
.nf
\fBvoid\fR *\fBddi_get_driver_private\fR(\fBdev_info_t *\fR\fIdip\fR);
.fi

.SH INTERFACE LEVEL
illumos DDI specific (illumos DDI).
.SH PARAMETERS
\fBddi_get_driver_private()\fR
.sp
.ne 2
.na
\fB\fIdip\fR\fR
.ad
.RS 7n
Pointer to device information  structure to get from.
.RE

.sp
.LP
\fBddi_set_driver_private()\fR
.sp
.ne 2
.na
\fB\fIdip\fR\fR
.ad
.RS 8n
Pointer to device information structure to set.
.RE

.sp
.ne 2
.na
\fB\fIdata\fR\fR
.ad
.RS 8n
Data area address to set.
.RE

.SH DESCRIPTION
The \fBddi_get_driver_private()\fR function returns the address of the device's
private data area from the device information structure pointed to by
\fIdip\fR.
.sp
.LP
The \fBddi_set_driver_private()\fR function sets the address of the device's
private data area in the device information structure pointed to by \fIdip\fR
with the value of \fIdata\fR.
.SH RETURN VALUES
The \fBddi_get_driver_private()\fR function returns the contents of
\fBdevi_driver_data\fR. If \fBddi_set_driver_private()\fR has not been
previously called with \fIdip\fR, an unpredictable value is returned.
.SH CONTEXT
These functions can be called from user , interrupt, or kernel context.
.SH SEE ALSO
\fIWriting Device Drivers\fR