NAME    [Toc]    [Back]

     device_get_softc -- access driver private instance variables

SYNOPSIS    [Toc]    [Back]

     #include <sys/param.h>
     #include <sys/bus.h>

     void *
     device_get_softc(device_t dev);

DESCRIPTION    [Toc]    [Back]

     Return the driver-specific state of dev.  The softc is automatically
     allocated the first time it is requested.	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
     the device.

     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 predates this function.

RETURN VALUES    [Toc]    [Back]

     The pointer to the driver-specific instance variable is returned.

SEE ALSO    [Toc]    [Back]

     device(9), device_set_softc(9), driver(9)

AUTHORS    [Toc]    [Back]

     This manual page was written by Doug Rabson.


FreeBSD 5.2.1			 June 16, 1998			 FreeBSD 5.2.1