Icp Controller As An Additional Controller; Coordinates Of Scsi Devices - ICP RS Series User Manual

I.4 ICP Controller as an additional Controller
We distinguish two cases.
a.) No ICP Controller has been configured for UnixWare yet.
In this case, the ICP driver must be installed from the UnixWare BTLD-Disk by means of the
UnixWare desktop and the options "System Setup", "Application Setup". Alternatively, this
procedure can be carried out from the UnixWare shell: "pkgadd -d /dev/dsk/f0t" (ICP driver disk
in drive 0).
b.) An ICP Controller has already been configured for UnixWare.
In this case, you only have to add an additional entry for the new ICP Controller. This is car-
ried out by
/etc/scsi/pdiadd -d DRQ -v IRQ -m MEM gdth
for DRQ use 0 (not necessary for PCI boards), for IRQ write the IRQ number the ICP Con-
troller uses. MEM corresponds with the DPMEM address of the ICP Controller (which is
displayed in the BIOS message of the ICP Controller after power up). In both cases, you
have to carry out a cold boot in order to use the new ICP Controller under UnixWare.
Example: /etc/scsi/pdiadd -d 0 -v 12 -m c8000 gdth.
After that, a reboot of the UnixWare system is necessary. No kernel link is required because
the driver will be dynamically loaded.
I.5 Coordinates of SCSI devices
a.) Host adapter Number (HA)
The host adapter number assigned to the ICP Controller is derived from the PCI slot num-
ber of the ICP Controller. Therefore, if there is only one ICP Controller installed in the PCI
bus computer system, the host adapter number=0. If there are two ICP Controllers in-
stalled, the ICP Controller with the lower PCI Slot number is assigned host adapter number
0 and the ICP Controller with the higher PCI slot number is assigned host adapter 1. (Note:
After a cold boot, the ICP BIOS displays a couple of messages, each beginning with the
controller's PCI slot number, e.g. "[PCI 0/3] 4 MB RAM detected". The number after the '/' is
the slot number of the controller. This helps you to determine which is the order of the ICP
Controllers and which host adapter number is assigned to them by UnixWare. See also
chapter B, Hardware Installation).
b.) UnixWare Bus number, Target-ID and LUN
Target-IDs and LUNs for "Not Direct Access Devices" (devices like streamers, tapes and
CD-ROMs and therefore not configurable via ICPCON), are directly assigned to the SCSI-ID
and the channel of the ICP Controller. Host Drives are assigned in increasing order to the
free coordinates (bus number and target ID;LUN is always 0).
Configuration Example:
In the PCI computer are two ICP Controllers (HA 0 = 1st ICP, HA 1 = 2nd ICP), each with two
SCSI channels.
1 hard disk
1 hard disk
1 hard disk
1 Streamer
1 CD-ROM
1 DAT
as Host Drive no. 0 on HA0
as Host Drive no. 0 on HA1
as Host Drive no. 1 on HA1
SCSI-ID 2, LUN 0 on SCSI channel A of HA0
SCSI-ID 3, LUN 0 on SCSI channel B of HA0
SCSI-ID 2, LUN 0 on SCSI channel A of HA1
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