pci_read_legacy_io
Prev | PCI Support Library | Next

## 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).

Prev | Up | Next
pci_sriov_get_totalvfs | Home | pci_write_legacy_io