Name

pci_mmap_legacy_io — map legacy PCI IO into user memory space

Synopsis

int pci_mmap_legacy_io (struct file *  filp,
 struct kobject *  kobj,
 struct bin_attribute *  attr,
 struct vm_area_struct *  vma);

Arguments

filp

open sysfs file

kobj

kobject corresponding to device to be mapped

attr

struct bin_attribute for this file

vma

struct vm_area_struct passed to mmap

Description

Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap legacy IO space (first meg of bus space) into application virtual memory space. Returns -ENOSYS if the operation isn't supported