pcibios_read_config_byte

Section: BIOS32 Functions (9)
Updated: August 5, 1997
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NAME

pcibios_read_config_byte - read one byte of data from the configuration space of the PCI bus

SYNOPSIS

#include <linux/bios32.h>

int pcibios_read_config_byte (unsigned char bus, unsigned char device_fn,unsigned char where, unsigned char * value);

DESCRIPTION

The pcibios_read_config_byte function reads one byte from the configuration space of the PCI bus. The bus can be specified with the bus parameters. The device_fn paramter determines which ? to use. where is set to the ?. After the call is made, value points to the value that was read.

RETURN VALUE

The return value is taken from the PCI controller in a way that I'm not quite sure of.

If the PCI system is unavailable, PCIBIOS_FUNC_NOT_SUPPORTED is returned.

AVAILABILITY

Linux 1.0?

AUTHOR

Kirk Petersen (kirk@speakeasy.org)