Device Drivers

Associated with each leaf or bus nexus node can be a device driver. Each driver exports a device operations structure dev_ops(9S) that defines the operations that the device driver can perform. The device operations structure contains function pointers for generic operations such as attach(9E), detach(9E), and getinfo(9E). It also contains a pointer to a set of operations specific to bus nexus drivers and a pointer to a set of operations specific to leaf drivers.