'\" t
.\"     Title: pci_read_legacy_io
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Hardware Interfaces
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "PCI_READ_LEGACY_IO" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Hardware Interfaces"
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.SH "NAME"
pci_read_legacy_io \- read byte(s) from legacy I/O port space
.SH "SYNOPSIS"
.HP \w'ssize_t\ pci_read_legacy_io('u
.BI "ssize_t pci_read_legacy_io(struct\ file\ *\ " "filp" ", struct\ kobject\ *\ " "kobj" ", struct\ bin_attribute\ *\ " "bin_attr" ", char\ *\ " "buf" ", loff_t\ " "off" ", size_t\ " "count" ");"
.SH "ARGUMENTS"
.PP
\fIfilp\fR
.RS 4
open sysfs file
.RE
.PP
\fIkobj\fR
.RS 4
kobject corresponding to file to read from
.RE
.PP
\fIbin_attr\fR
.RS 4
struct bin_attribute for this file
.RE
.PP
\fIbuf\fR
.RS 4
buffer to store results
.RE
.PP
\fIoff\fR
.RS 4
offset into legacy I/O port space
.RE
.PP
\fIcount\fR
.RS 4
number of bytes to read
.RE
.SH "DESCRIPTION"
.PP
Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific callback routine (pci_legacy_read)\&.
.SH "COPYRIGHT"
.br