pci_mmap_legacy_io (9) Linux Manual Page
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