Manpages

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

Solaris IA DDI specific (Solaris IA DDI).

PARAMETERS

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 multiple 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 context.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

SEE ALSO

eisa(4), isa(4), attributes(5), outb(9F)

Writing Device Drivers