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Date:      Thu, 1 Oct 1998 12:11:25 +0200 (CEST)
From:      Holm Tiffe <freebsd@magnet.geophysik.tu-freiberg.de>
To:        freebsd-scsi@FreeBSD.ORG
Subject:   Minor glitch with AHA2742 and CAM (bus nubering)
Message-ID:  <199810011011.MAA01377@magnet.geophysik.tu-freiberg.de>

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Hi,

on my old 486/EISA I have an -current (elf) running with an
AHA2742T twin bus adapter.

Because of the brain damadget architecture from this controller
(Bus A has an external and an internal connector, bus B has
only an internal connector) I've changed the Bus numbering
in the EISA Setup, so that channel B is the primary bus
and channel A the secondary.

This configuration is running fine, but the now primary channel
B is detected as bus #1 and the secondary channel A as bus #0.
This makes no problems so far. But when I connect an external
SCSI disk later whitout hardwiring the devices in the kernel
the kernel is booting fine (using da0 in the bootloader) but
when it try's to mount the root disk it panics, because there
is no / filesystem on the now new disk from the second channel
A that is now da0!

Could we please change this bus numbering behavior so that
the in the EISA Setup defined "primary" SCSI bus get's the
bus #0 even when it is channel B ?

Thanks in advance,

Holm
-- 
*******************************************************************************
* Holm Tiffe                        holm@geophysik.tu-freiberg.de             *
* Freiberger Strasse 24                                                       *
* 09600 Kleinschirma, Germany           Microsoft is not the Answer -         *
* Tel.: 49 3731 74233                   Microsoft is the Question,            *
* UUCP: 49 3731 73719  unicorn!holm       and the Answer is no !              *
*******************************************************************************

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