Sorry. Yes. The aic7xxx driver delivered by RedHat with the 2.0.35 kernel (I think
that was RedHat 5.1) was broken in a number of ways. RedHat issued a warning, a
patch and then a newer kernel level shortly after. It was mostly fixed in 5.2,
although it looks like the one in 6.0 has some problems the one in 5.2 never had.
In article <[EMAIL PROTECTED]>, Roland Gerlach wrote:
> Cc: [EMAIL PROTECTED], Terry Hardie <[EMAIL PROTECTED]>,
> Neal Richter <[EMAIL PROTECTED]>, Paul Gray <[EMAIL PROTECTED]>,
> Allin Cottrell <[EMAIL PROTECTED]>
> Newsgroups: comp.os.linux.hardware
> Subject: Problem solved - many thanks (was Help: Kernel can't see 2GB JAZ drive)
> From: Roland Gerlach <[EMAIL PROTECTED]>
> Date: 24 Jun 1999 09:08:36 +1000
> To: unlisted-recipients:; (no To-header on input)
>
> The following message is a courtesy copy of an article
> that has been posted to comp.os.linux.hardware as well.
>
> I wrote:
>
> > I've recently installed a 2GB JAZ drive into a PC with an ADAPTEC 2940
> > SCSI controller. The JAZ drive is the only thing on the SCSI bus.
> >
> > When the PC boots, the ADAPTEC controller identifies the JAZ drive.
> >
> > The 2.0.35 kernel identifies the ADAPTEC controller but doesn't see
> > the JAZ drive.
>
> These were the messages displayed during the boot of 2.0.35:
>
> | aic7xxx: Warning - detected auto-termination on controller:
> | aic7xxx: <Adaptec AHA-294X Ultra SCSI host adapter> at PCI 11/0
> | aic7xxx: Please verify driver detected settings are correct.
> | aic7xxx: If not, then please properly set the device termination
> | aic7xxx: in the Adaptec SCSI BIOS by hitting CTRL-A when prompted
> | aic7xxx: during machine bootup.
> | aic7xxx: Cables present (Int-50 YES, Int-68 NO, Ext-68 NO)
> | aic7xxx: Termination (Low ON, High ON)
> | (scsi0) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 11/0
> | (scsi0) Wide Channel, SCSI ID=7, 16/255 SCBs
> | (scsi0) BIOS enabled, IO Port 0x6400, IRQ 9
> | (scsi0) IO Memory at 0xe4000000, MMAP Memory at 0x2805000
> | (scsi0) Resetting channel
> | (scsi0) Downloading sequencer code... 413 instructions downloaded
> | scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.0.19/3.2.4
> | <Adaptec AHA-294X Ultra SCSI host adapter>
> | scsi : 1 host.
> | (scsi0:0:-1:-1) Scanning channel for devices.
> | scsi : detected total.
>
> <snip>
>
> | (scsi0:-1:-1:-1) Bad scbptr 255 during SELTO.
> | (scsi0:-1:-1:-1) Referenced SCB 255 not valid during SELTO.
> | SCSISEQ = 0x12 SEQADDR = 0xa SSTAT0 = 0x15 SSTAT1 = 0x88
>
> Hmmm, not so good :-(
>
> Last night I upgraded this machine to 2.0.36 and mysteriously the
> problem disappeared:
>
> | (scsi0) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 11/0
> | (scsi0) Wide Channel, SCSI ID=7, 16/255 SCBs
> | (scsi0) Warning - detected auto-termination
> | (scsi0) Please verify driver detected settings are correct.
> | (scsi0) If not, then please properly set the device termination
> | (scsi0) in the Adaptec SCSI BIOS by hitting CTRL-A when prompted
> | (scsi0) during machine bootup.
> | (scsi0) Cables present (Int-50 YES, Int-68 NO, Ext-68 NO)
> | (scsi0) Downloading sequencer code... 419 instructions downloaded
> | scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.11/3.2.4
> | <Adaptec AHA-294X Ultra SCSI host adapter>
> | scsi : 1 host.
> | Vendor: iomega Model: jaz 2GB Rev: E.15
> | Type: Direct-Access ANSI SCSI revision: 02
> | Detected scsi removable disk sda at scsi0, channel 0, id 4, lun 0
> | scsi : detected 1 SCSI disk total.
> | (scsi0:0:4:0) Synchronous at 20.0 Mbyte/sec, offset 15.
> | SCSI device sda: hdwr sector= 512 bytes. Sectors= 3915600 [1911 MB] [1.9 GB]
> | sda: Write Protect is on
>
> OK, so I should turn off the auto-termination but at least I can now
> access the drive :-)
>
> Many thanks to those that helped.
>
> And a special thanks to the great Linus himself and the cast of
> thousands that made/make Linux so good.
>
> Cheers,
> Roland.
>
Werner Kliewer
Manitoba Public Insurance
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