table of contents
| PCI_REQUEST_REGIONS_(9) | Hardware Interfaces | PCI_REQUEST_REGIONS_(9) |
NAME¶
pci_request_regions_exclusive - Reserved PCI I/O and memory resources
SYNOPSIS¶
int pci_request_regions_exclusive(struct pci_dev * pdev, const char * res_name);
ARGUMENTS¶
pdev
PCI device whose resources are to be reserved
res_name
Name to be associated with resource.
DESCRIPTION¶
Mark all PCI regions associated with PCI device pdev as being reserved by owner res_name. Do not access any address inside the PCI regions unless this call returns successfully.
pci_request_regions_exclusive will mark the region so that /dev/mem and the sysfs MMIO access will not be allowed.
Returns 0 on success, or EBUSY on error. A warning message is also printed on failure.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |