'\" te
.\"  Copyright (c) 2005, Sun Microsystems, Inc.  All Rights Reserved
.TH ddi_io_get8 9F "1 Nov 2005" "SunOS 5.11" "Kernel Functions for Drivers"
.SH NAME
ddi_io_get8, ddi_io_get16, ddi_io_get32, ddi_io_getb, ddi_io_getl, ddi_io_getw \- read data from the mapped device register in I/O space
.SH SYNOPSIS
.LP
.nf
#include <sys/ddi.h> 
#include <sys/sunddi.h>

\fBuint8_t\fR \fBddi_io_get8\fR(\fBddi_acc_handle_t\fR \fIhandle\fR, \fBuint8_t *\fR\fIdev_addr\fR);
.fi

.LP
.nf
\fBuint16_t\fR \fBddi_io_get16\fR(\fBddi_acc_handle_t\fR \fIhandle\fR, \fBuint16_t  *\fR\fIdev_addr\fR);
.fi

.LP
.nf
\fBuint32_t\fR \fBddi_io_get32\fR(\fBddi_acc_handle_t\fR \fIhandle\fR, \fBuint32_t  *\fR\fIdev_addr\fR);
.fi

.SH INTERFACE LEVEL
.sp
.LP
Solaris DDI specific (Solaris DDI). The \fBddi_io_get8()\fR, \fBddi_io_get16()\fR, \fBddi_io_get32()\fR, \fBddi_io_getb()\fR, \fBddi_io_getl()\fR, and \fBddi_io_getw()\fR functions are obsolete. The \fBddi_get8\fR(9F) function replaces \fBddi_io_get8()\fR. The \fBddi_get16\fR(9F) function replaces \fBddi_io_get16()\fR. The \fBddi_get32\fR(9F) function replaces \fBddi_io_get32()\fR. The \fBddi_get8\fR(9F) function replaces \fBddi_io_getb()\fR. The \fBddi_get32\fR(9F) function replaces \fBddi_io_getl()\fR. The \fBddi_get16\fR(9F) function replaces \fBddi_io_getw()\fR.
.SH PARAMETERS
.sp
.ne 2
.mk
.na
\fB\fIhandle\fR\fR
.ad
.RS 12n
.rt  
Data access handle returned from setup calls, such as \fBddi_regs_map_setup\fR(9F). 
.RE

.sp
.ne 2
.mk
.na
\fB\fIdev_addr\fR\fR
.ad
.RS 12n
.rt  
Device address.
.RE

.SH DESCRIPTION
.sp
.LP
These routines generate a read of various sizes from the device address, \fIdev_addr\fR, in I/O space. The \fBddi_io_get8()\fR, \fBddi_io_get16()\fR, and \fBddi_io_get32()\fR functions read 8 bits, 16 bits, and 32 bits of data, respectively, from the device address, \fIdev_addr\fR. 
.sp
.LP
Each individual datum will automatically be translated to maintain a consistent view between the host and the device based on the encoded information in the data access handle.  The translation may involve byte-swapping if the host and the device have incompatible endian characteristics.
.SH CONTEXT
.sp
.LP
These functions can be called from user, kernel, or interrupt context.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityObsolete
.TE

.SH SEE ALSO
.sp
.LP
\fBisa\fR(4), \fBddi_get8\fR(9F), \fBddi_get16\fR(9F), \fBddi_get32\fR(9F), \fBddi_io_put8\fR(9F), \fBddi_io_rep_get8\fR(9F), \fBddi_io_rep_put8\fR(9F), \fBddi_regs_map_free\fR(9F), \fBddi_regs_map_setup\fR(9F), \fBddi_device_acc_attr\fR(9S)