pci_mmap_legacy_io (9) - Linux Manuals

pci_mmap_legacy_io: map legacy PCI IO into user memory space

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

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