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device_get_softc - access driver private instance variables
Return the driver-specific state of dev. The softc is automatically
allocated and zeroed when the device is attached. The softc is also
initialized and present when a device is probed, but is subject to
caveats as described in DEVICE_PROBE(9). The size of the allocation is
determined by the device’s driver_t information used to define the
driver. The softc typically encapsulates the state of this instance of
Driver writers are discouraged from using their own softc management
mechanisms. Driver writers should not copy such mechanisms found in
drivers in the tree that predate this function.
The pointer to the driver-specific instance variable is returned.
device(9), DEVICE_PROBE(9), device_set_softc(9), driver(9)
This manual page was written by Doug Rabson.