repinsw(9F)
NAME
inb, inw, inl, repinsb, repinsw, repinsd - read from an I/O
port
SYNOPSIS
#include <sys/ddi.h>
#include <sys/sunddi.h>
unsigned char inb(int port);
unsigned short inw(int port);
unsigned long inl(int port);
void repinsb(int port, unsigned char *addr, int count);
void repinsw(int port, unsigned short *addr, int count);
void repinsd(int port, unsigned long *addr, int count);
INTERFACE LEVEL
The functions described here are obsolete. For the inb(),
inw(), and inl() functions, use, respectively, ddi_get8(9F),
ddi_get16(9F), and ddi_get32(9F) instead. For repinsb(),
repinsw(), andrepinsl(), use, respectively,
ddi_rep_get8(9F), ddi_rep_get16(9F), and ddi_rep_get32(9F)
instead.
PARAMETERS
port A valid I/O port address.
addr The address of a buffer where the values will be
stored.
count The number of values to be read from the I/O port.
DESCRIPTION
These routines read data of various sizes from the I/O port
with the address specified by port.
The inb(), inw(), and inl() functions read 8 bits, 16 bits,
and 32 bits of data respectively, returning the resulting
values.
The repinsb(), repinsw(), and repinsd() functions read mul-
tiple 8-bit, 16-bit, and 32-bit values, respectively. count
specifies the number of values to be read. A pointer to a
buffer will receive the input data; the buffer must be long
enough to hold count values of the requested size.
RETURN VALUES
inb(), inw(), and inl() return the value that was read from
the I/O port.
CONTEXT
These functions may be called from user or interrupt con-
text.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Architecture | x86 |
|_____________________________|_____________________________|
| Stability Level | Obsolete |
|_____________________________|_____________________________|
SEE ALSO
eisa(4), isa(4), attributes(5), ddi_get8(9F), ddi_get16(9F),
ddi_get32(9F), ddi_rep_get8(9F), ddi_rep_get16(9F),
ddi_rep_get32(9F), outb(9F)
Writing Device Drivers
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