allocate_resource — allocate empty slot in the resource tree given range & alignment
int allocate_resource ( | struct resource * | root, |
| struct resource * | new, | |
| resource_size_t | size, | |
| resource_size_t | min, | |
| resource_size_t | max, | |
| resource_size_t | align, | |
| void (* | alignf(void *, struct resource *, resource_size_t, resource_size_t), | |
| void * | alignf_data); |
rootroot resource descriptor
newresource descriptor desired by caller
sizerequested resource region size
minminimum size to allocate
maxmaximum size to allocate
alignalignment requested, in bytes
alignfalignment function, optional, called if not NULL
alignf_data
arbitrary data to pass to the alignf function