pci_request_regions_exclusive (9) - Linux Man Pages

pci_request_regions_exclusive: Reserved PCI I/O and memory resources

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.

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