NAME

inb, inw, inl - 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);

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.

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.

RETURN VALUES

The inb(), inw(), and inl() functions return the value that was read from the I/O port.

CONTEXT

These functions may be called from user, interrupt, or kernel context.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Architecture	x86
Stability Level	Obsolete