Iwill Motherboard

[Ed Greenberg]

I appreciate finding this mailing list and hope that somebody can help.
Note that my boot disk and cdrom are IDE. The SCSI problem described below
is for an additional drive. 

I have an "Iwill P55XUB" motherboard with adaptec scsi onboard. On startup,
Linux (RedHat 5, Kernel 2.0.32) reports:

aic7xxx: <Adaptec AIC-7860 Ultra SCSI host adapter> at PCI 12
aic7xxx: BIOS enabled, IO Port 0x6400, IO Mem 0xe0800000, IRQ 9, Revision C
aic7xxx: Single Channel, SCSI ID 7, 3/3 SCBs, QFull 8, QMask 0xf
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 4.1/3.2
scsi : 1 host.
scsi0: Scanning channel A for devices.
  Vendor: SEAGATE   Model: ST34572N          Rev: 0876
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 4, lun 0
scsi : detected 1 SCSI disk total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 8888924 [4340 MB] [4.3 GB]

The driver source contains:
*  $Id: aic7xxx.c,v 4.1 1997/06/12 08:23:42 deang Exp $

The driver is compiled in as:

CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_BLK_DEV_SR=m
CONFIG_CHR_DEV_SG=m
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_AIC7XXX=y


Later, on copying data to the disk, I get:

scsi : aborting command due to timeout : pid 9085, scsi0, channel 0, id 4,
lun 0 Read (10) 00 00 3d c0 48 00 00 02 00 
(scsi0:4:0) Abort_reset, scb flags 0x1, Data-In phase, SCSISIGI 0x44,
SEQADDR 0x42, SSTAT0 0x7, SSTAT1 0x2
scsi0: abort message in message buffer
SCSI host 0 abort (pid 9085) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
(scsi0:-1:0) Reset device, active_scb 0
scsi0: (targ -1/chan A) matching scb to (targ 4/chan A)
scsi0: (targ -1/chan A) matching scb to (targ 4/chan A)
scsi0: (targ -1/chan A) matching scb to (targ 4/chan A)
scsi0: Resetting current channel A
scsi0: Channel reset, sequencer restarted
(scsi0:4:0) Aborting scb 0

I've tried a variety of scsi disks in this application, both on the
internal cable and on an external cable. I am never able to get a SCSI disk
to work without these timeouts. 

Does this look like: 

* A controller/driver problem, 
* A cabling/hardware problem,
* A set of bad drives (at least four of various types), 
* Something else? 

Any advice appreciated. 

Tnx, 

</edg> 
--
Ed Greenberg               edg at greenberg.org            km6cg
                        http://www.greenberg.org/

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