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.