object representing a class of devices
typedef struct devclass *devclass_t
object has two main functions in
the system. The first is to manage the allocation of unit numbers for device
instances and the second is to hold the list of device drivers for a
particular bus type. Each devclass
has a name
and there cannot be two devclasses with the same name. This ensures that
unique unit numbers are allocated to device instances.
Beware that this means devclass
must be the
same for different bus attachments of the same device driver.
This manual page was written by Doug