AHA-1740 (in standard mode)
AHA-1742 (in standard mode)
Please refer to the
Compatible Hardware Web Pages.
to determine the support status of your host adapter, or
contact your system supplier.
Adaptec 154x (ISA) notes
The ad driver and the
associated Adaptec hardware
have been tested with many computer systems.
If you are unable to get the host
adapter to function, or you experience file corruption, use
the adapter's BIOS maintenance and debugging
routines to see if an incompatibility exists. Refer to your
Adaptec documentation for further details.
If the interface test routine displays a failure message,
or no message at all, this indicates a hardware
incompatibility. Your computer may have trouble loading and
running the SCO OpenServer system.
Since this is a hardware-level inconsistency,
no software patch is available;
you must contact the hardware manufacturer.
You must reset the jumpers on a second Adaptec
AHA-154x board to configure start address 0x230,
IRQ 12, and DMA channel 6. The
BIOS must also be disabled on the second adapter.
(For more information, refer to your Adaptec documentation.)
Adaptec 164x (MCA) notes
When the root disk is on an ESDI controller,
you must make these settings on the AHA-1640 card:
Start I/O address (BIOS disabled)
0x330
Start I/O address (BIOS enabled)
0x330, 0x230, or 0x130
Interrupt (IRQ)
15
When the root disk is a SCSI disk connected to a
primary IBM SCSI host adapter,
you must make these settings on the AHA-1640 card:
Start I/O address (BIOS enabled or disabled)
0x330, 0x230, or 0x130
Start I/O address (BIOS disabled)
0x334, 0x234, or 0x134
Interrupt (IRQ)
15
Disable the adapter's BIOS because the
root disk is on the ESDI controller or on a
different SCSI bus.
Configuring the ad driver
You can configure the ad driver using entries in
/etc/conf/cf.d/mdevice and /etc/conf/sdevice.d/ad.
See
mdevice(F)
and
sdevice(F).
Changes to these files
will only take effect if the kernel is relinked using
link_unix(ADM)
and the machine rebooted.
Configure ad driver-specific characteristics
by editing the /etc/conf/pack.d/ad/space.c file,
which controls parameters such as bus-on and bus-off times,
DMA transfer speed,
and reporting on mailbox warnings.
Each parameter line represents a configurable parameter
for one host adapter.
The first number indicates whether
the parameter should be changed from the default;
if it is 0,
the parameter will be set to the default
for that adapter.
The second number is the value for the parameter.
Bus-on time
If not modified, the default value in
aha_buson_default will be used.
aha_change aha_buson[ha_number] ={1, value};
Bus-off time
If not modified, the default value in
aha_busoff_default will be used.
If no value is set in aha_change,
the value set in aha_xfer_default will be used.
If no value is set in aha_xfer_default,
the value on the adapter's jumpers will be used.
Because there are problems with faster transfer speeds
on some hardware platforms,
aha_xfer_default is set to 5MB per second.
Boot time configuration of SCSI
Use the
bootstring(HW)
parameters to override
the default hardware configuration information.
Of special interest are the adapter= parameter
that specifies information for
the host adapter card
that plugs into or is part of the motherboard,
and the periph= parameter
that specifies information about the host adapter
being used by one of the generic peripheral interfaces
(Sdsk, Srom, or Stp).
The ad driver supports the ad.nocheck
bootstring, which disables hardware checking by the driver.
This allows clone devices to be configured.
ioctl commands
The ad driver
supports all standard SCSI ioctls
that are defined in the <sys/scsicmd.h> header file
and documented on the
scsi(HW)
manual page.
Diagnostics
These error messages associated with ad may display on the console
if either the Adaptec AHA-1540 or
AHA-1640 host adapter is installed.
See
messages(M)
for general information about kernel error messages,
including a list of generic device driver errors.
WARNING: aha: Adapter m detected SCSI reset, status=0xn, intr=0xvector
An unexpected host adapter reset was detected.
WARNING: aha: Adapter m unexpected MBI status 0xn
AHA-1X40 cmd : o AHA-1X40 sense : p
The incoming mailbox is in an unexpected state after an interrupt.
WARNING: aha: Port 0xm failed to go idle, status=0xn, cmd=0xo
Register m on the host adapter indicated that a command
had still not been completed after R_LIMIT cycles in a spin loop.
WARNING: aha: Port 0xm internal failure 0xn
The host adapter failed to be recognized on initialization.
WARNING: aha: Adapter diagnostic failure 0x%x: bus 0
ad was unable to initialize the hardware
that it found.
This often indicates a hardware error;
contact Adaptec Technical Support for assistance.