mcis(7)
mcis --
MCIS SCSI host adapter driver
Description
The MCIS host adapter subsystem serves as a means for SCSI target
drivers (such as sd01 and st01) to communicate
on the SCSI bus with target controllers and logical units.
This driver implements the SCSI Driver Interface (SDI)
for such SCSI target drivers.
It is also possible to access this subsystem using the pass-through
driver interface.
To find the appropriate device to use, while any
device is being accessed through the target
driver, use the B_GETDEV
ioctl to get the major and minor numbers of the pass-through node.
This node may be created and opened for use.
ioctl calls
The SDI_SEND, SDI_BRESET and B_GETTYPE
pass-through
ioctl(2)
commands documented on the
sdi(7)
manual page are supported by this driver.
In addition, the following commands are supported:
- B_REDT
-
reads the extended edt data structure that is
stored in the mcis driver's internal data structure
- B_HA_CNT
-
gets the value of the number of host adapters
for which the mcis driver is configured
NOTE:
On IBM MCA SCSI systems (for example, Model
57 and Model 90), the SCSI boot disk must be the disk with the
highest SCSI target address (SCSI ID). For
example, if you have disks at SCSI IDs 3, 4, and 6,
the boot disk must be the disk at SCSI ID 6. If you
attempt to boot from a SCSI disk which is not the highest
SCSI ID, it might not work.
Files
- /usr/include/sys/mcis.h
-
- /usr/include/sys/scsi.h
-
- /usr/include/sys/sdi.h
-
- /usr/include/sys/sdi_edt.h
-
- /etc/conf/pack.d/mcis/space.c
-
References
ioctl(2),
sdi(7)
30 January 1998
© 1998 The Santa Cruz Operation, Inc. All rights reserved.