Allocate a resource from a parent bus
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);
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
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.