pci_bus_alloc_resource (9) Linux Manual Page
pci_bus_alloc_resource – allocate a resource from a parent bus
Synopsis
int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, resource_size_t size, resource_size_t align, resource_size_t min, unsigned long type_mask, resource_size_t (*alignf)(void *, const struct resource *, resource_size_t, resource_size_t), void *alignf_data);Arguments
bus
-
- PCI bus
res
- resource to allocate
size
- size of resource to allocate
align
- alignment of resource to allocate
min
- minimum /proc/iomem address to allocate
type_mask
- IORESOURCE_* type flags
alignf
- resource alignment function
alignf_data
- data argument for resource alignment function
Description
Given the PCI bus a device resides on, the size, minimum address, alignment and type, try to find an acceptable resource allocation for a specific device resource.