[2316] in linux-scsi channel archive
Re: PCI/SCSI AHA-2920 problems installing SW 3.2 - HELP!
daemon@ATHENA.MIT.EDU (John Rumball)
Wed Aug 20 11:54:56 1997
Date: Wed, 20 Aug 1997 11:15:59 -0400
To: Antonio Luis Sousa <als@di.uminho.pt>
From: John Rumball <rumbalj@gov.on.ca>
Cc: linux-scsi@vger.rutgers.edu, jer@isys.ca
Antonio,
At 04:35 PM 19/08/97 +0100, you wrote:
>John Rumball wrote:
>
>> I am booting with the SlackWare 3.2 (kernel 2.0.29) boot floppy
>> containing the fdomain.s image and with the root floppy containing
>> color.gz. When I get to the "boot:" prompt and press TAB, the only options
>> I see are:
>>
>> ramdisk big2 small2 drive2 mount
>>
>> There is no Linux option as you suggest. Can I use of these options to
>> identify my fdomain card?
>>
>I think you should try the following:
>
>ramdisk fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]
>
>Regards
>Antonio Luis
OK, this morning I tried the ramdisk command at the boot prompt four
different times, one for each of the acceptable port-base values (as listed
in SCSI-HOWTO for fdomain.s) 0x140, 0x150, 0x160, 0x170. In each case I
used IRQ 10 and SCSI ID 7. Each time the result was negative! :-(
So then I started thinking that perhaps the card is NOT at any of these
port-base addresses. I fired up Windows95 on the same machine (and hard
drive) and went to the Device Manager where it reported the AHA-2920 SCSI
controller at port-base I/O 6100h-610Fh, IRQ 10 (along with "IRQ Holder for
PCI Steering" whatever that is, also at IRQ 10) and MEM
000C8000h-000CBFFFh. This was indeed revealing, and probably explains why
Linux could not find it! Unfortunately, I ran out of time this morning to
try these new values at the boot prompt.
However, I have a few questions about these findings:
1) How did the AHA-2920 come to have a "non-standard" port-base of 6100h?
Did I somehow manage to screw up the installation of the card?
2) Am I going to have problems in Linux because two "devices" are sharing
IRQ 10? Windows95 seems to be working just fine, though. If so, how do I
change the IRQ setting for the 2920? There are no jumpers onboard!
Once again, thank you for your help.
Regards,
John
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