Name

pci_read_legacy_io — read byte(s) from legacy I/O port space

Synopsis

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);

Arguments

filp

open sysfs file

kobj

kobject corresponding to file to read from

bin_attr

struct bin_attribute for this file

buf

buffer to store results

off

offset into legacy I/O port space

count

number of bytes to read

Description

Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific callback routine (pci_legacy_read).