table of contents
other versions
PCI_REQUEST_REGION_E(9) | Hardware Interfaces | PCI_REQUEST_REGION_E(9) |
NAME¶
pci_request_region_exclusive - Reserved PCI I/O and memory resourceSYNOPSIS¶
int
pci_request_region_exclusive(struct pci_dev * pdev,
int bar,
const char * res_name);
ARGUMENTS¶
pdevPCI device whose resources are to be reserved
bar
BAR to be reserved
res_name
Name to be associated with resource.
DESCRIPTION¶
Mark the PCI region associated with PCI device pdev BR bar as being reserved by owner res_name. Do not access any address inside the PCI regions unless this call returns successfully. Returns 0 on success, or EBUSY on error. A warning message is also printed on failure. The key difference that _exclusive makes it that userspace is explicitly not allowed to map the resource via /dev/mem or sysfs.COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |