blc(HW)
blc --
BusLogic SCSI host adapter subsystem
Description
The BusLogic SCSI host adapter driver provides a Storage Device
Interface (SDI)-compliant interface to BusLogic SCSI
Host Adapters. The supported devices include the BT-445C,
BT-54x, BT-64x, BT-74x, BT-75x,
BT-946C, BT-956C, BT-948, BT-958,
and the BT-958D.
The BusLogic SCSI host adapter driver enables SDI-compliant
target drivers (such as sd01 and st01) to communicate
on the SCSI bus with target controllers and logical units. This
allows normal access to mass-storage devices using standard system interfaces
and filesystems.
It is also possible for an application to access the SCSI bus
subsystem directly by using the pass-through interface.
See
pt_open(S).
BusLogic SCSI adapters support the Tag Command Queueing feature as
default.
To disable this feature, change the value of the blc_do_tag variable
in the /etc/conf/pack.d/blc/space.c file from 1 to 0. After you have
changed the value in the file, rebuild the kernel for the Tag Command Queueing
feature to be effective.
Files
/usr/include/sys/blc.h-
/usr/include/sys/scsi.h-
/usr/include/sys/sdi.h-
/usr/include/sys/sdi_edt.h-
/usr/include/sys/sdi_comm.h-
/etc/conf/pack.d/blc/space.c-
References
adsa(HW),
adsc(HW),
adse(HW),
adss(HW),
dcu(ADM),
dpt(HW),
ioctl(S),
mcis(HW),
sc01(HW),
sd01(HW),
sdi(HW),
st01(HW),
sw01(HW),
wd7000(HW)
Notices
Extreme caution should be exercised when using the pass-through interface.
It is possible to interfere with normal system I/O and cause hangs
if pass-through is used to an active device.
Pass-through should only be used to a device that is otherwise quiescent.
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 - 02 June 2005