def enum(cls, filt=[]):
for drv in cls._drivers:
drv_path = sysfs_path('/sys/bus/pci/drivers', drv.PCI_DRIVER)
if os.path.exists(drv_path):
return drv.enum(filt)
print('no fpga drivers loaded')
def __init__(self, _sysfs_path):
"""__init__ Initializes a new sysfs_node object with a sysfs path.
Args:
sysfs_path: sysfs path to a 'file' or 'directory' object.
"""
super(sysfs_node, self).__init__()
self._sysfs_path = sysfs_path(_sysfs_path)
def enum_devices(cls):
"""enum_devices Discover sysfs devices under a given device root.
"""
nodes = []
paths = glob.glob(sysfs_path(cls.DEVICE_ROOT, '*'))
# log.debug('found %s objects: %s', sysfs_class_name, class_paths)
for path in paths:
nodes.append(cls(path))
return nodes
def enum_class(cls, sysfs_class_name, sysfs_class=None):
"""enum_class Discover class_node objects under a given "class".
Args:
sysfs_class_name: The name of the class under /sys/class to look
at.
sysfs_class(class_node): The class_node or deriving class to use
when creating class_node objects.
Notes:
If 'sysfs_class' is not specified, it will use this class.
This is meant so that classes deriving from this can omit this.
"""
sysfs_class = sysfs_class or cls
log = LOG(cls.__name__)
nodes = []
class_paths = glob.glob(sysfs_path('class', sysfs_class_name, '*'))
log.debug('found %s objects: %s', sysfs_class_name, class_paths)
for path in class_paths:
nodes.append(sysfs_class(path))
return nodes