adp - Low-level module for controllers based on Adaptec
AIC-7870P and AIC-7880P SCSI chips
The adp module provides low-level interface routines between
the common disk/tape I/O system and SCSI (Small Computer
System Interface) controllers based on the Adaptec AIC-7870P
and AIC-7880P SCSI chips. These controllers include the
Adaptec AHA-2940, AHA-2940W, AHA-2940U, AHA-2940UW, AHA-
3940, and AHA-3940W, as well as motherboards with embedded
AIC-7870P and AIC-7880P SCSI chips.
Supported devices are AIC-7850, AIC-7860, AIC-7870, AIC-7880
The adp module can be configured for disk and streaming tape
support for one or more host adapter boards, each of which
must be the sole initiator on a SCSI bus. Auto-
configuration code determines if the adapter is present at
the configured address and what types of devices are
attached to the adapter.
The Plug N Play SCAM Support option is not supported.
Known Problems and Limitations
o To use the AHA-3940 or AHA-3940W adapters, the mother-
board must have a BIOS that supports the DEC PCI-to-
PCI Bridge chip on the host bus adapter.
o User-level programs have exhibited problems on some
PCI systems with an Adaptec AHA-2940 or AHA-2940W card
and certain motherboards. If problems with user-level
programs occur, use the BIOS setup to disable write-
back CPU caching (or all caching if there is no con-
trol over the caching algorithm). The affected moth-
- PCI motherboards with a 60-MHz Pentium chip,
with PCI chipset numbers S82433LX Z852 and
S82434LX Z850. The part numbers of the Intel moth-
erboards are AA616393-007 and AA615988-009.
- PCI motherboards with a 90-MHz Pentium chip,
with PCI chipset numbers S82433NX Z895, S82434NX
Z895, and S82434NX Z896. The part number of the
Intel motherboard is 541286-005. (Some Gateway
2000 systems use this motherboard.)
- AA-619772-002 motherboard with 82433LX Z852 and
82434LX Z882 chips causes random memory
inconsistencies. Return the motherboard to the
vendor for a replacement.
o If the AHA-2940 SCSI adapter does not recognize the
Quantum Empire 1080S, HP 3323 SE or other SCSI disk
drive, reduce the Synchronous Transfer rate on the
Adaptec controller to 8 Mbps.
o The AHA-3940 has been certified by Adaptec to work on
specific systems; however, some testing has shown that
the Solaris operating environment works properly in
some of those systems and not in others.
Use the Adaptec configuration utility to perform the follow-
o Configure each SCSI device to have a unique SCSI ID,
then using the adapter's Advanced Configuration
Options setup menu, set the Plug N Play SCAM Support
option to Disabled.
o If there is more than one controller (or an embedded
controller), try to use one IRQ per controller.
o Enable bus mastering for the slots with your host bus
adapters, when the choice is given.
o For older disk drives, tape drives, and most CD-ROM
devices, make sure the maximum SCSI data transfer
speed is set to 5.0 Mbps.
o Enable support for disks larger than 1 Gbyte if appli-
Configuration file for the adp driver; there are no
user-configurable options in this file
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Architecture | x86 |
Solaris (Intel Platform Edition) Hardware Compatibility List
Throughout the release, support of additional devices may be
added. See the Solaris (Intel Platform Edition) Hardware
Compatibility List for additional information.
The adp driver supports Logical Unit Number ("LUN") values
of 0 through 15. This range exceeds the standard SCSI-2
requirements which call for support of LUNs 0 through 7.
Man(1) output converted with