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
struct file * filp
open sysfs file
struct kobject * kobj
kobject corresponding to file to read from
struct bin_attribute * bin_attr
struct bin_attribute for this file
char * buf
buffer to store results
loff_t off
offset into legacy I/O port space
size_t 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).