Current File : //kernel/drv/README.driver

#
# Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
# 

Driver configuration should be performed by placing updates to a
driver's configuration file in the directory /etc/driver/drv.

For example, the bge driver allows up to 4 transmit rings but the
driver by default enables only 1.  If the device on a particular
system supports more than 1, the bge driver configuration can be
modified by placing a bge.conf file in /etc/driver/drv with the
following line:

       bge-tx-rings            = 2;

When the bge driver is next loaded, the updated value can be
observed with prtconf:

       pci108e,534d (pci14e4,16a7), instance #0
          System software properties:
            name='bge-known-subsystems' type=int items=16
            name='bge-rx-rings' type=int items=1
                  value=00000010
            name='bge-tx-rings' type=int items=1
                  value=00000002

See update_drv(1M) and driver.conf(4) for more information.