[1396] in linux-scsi channel archive
Re: ncr53c8xx problem with a CLARiiON disk array.
daemon@ATHENA.MIT.EDU (Richard Waltham)
Thu Feb 6 20:24:37 1997
From: Richard Waltham <dormouse@farsrobt.demon.co.uk>
To: groudier@club-internet.fr (Gerard Roudier)
Date: Fri, 7 Feb 1997 01:20:13 +0000 (GMT)
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.91.970206203054.94B-100000@localhost> from "Gerard Roudier" at Feb 6, 97 08:51:31 pm
How about the DIF bit in the STEST2 register. (bit 5) This needs setting to
interface to differential drivers correctly.
It would be useful to sense this automatically during booting and SYMBIOS
cards use GPIO3 to sense single or differential cards. GPIO3 is low
for differential cards. Unfortunately at least one other manufacturer
(Tekram) uses the same pin for some other function so this rules out
automatic sensing of differential mode.
May be another compile time option? There may be problems though if there
is more than one 53c8xx host adaptor and they are a mixture of single ended
and differential.
Something to think about;)
Richard
>
> The Linux scsi driver is probably configured with multi-luns support.
> It detected 4 luns on the CLARiiON.
>
> I donnot have info about such hardware, but in my opinion, lun 0
> should be enough to access all the disks as a single one.
> Other luns should probably allow to access each disk of the array
> as a separate one. (Speculation only)
>
> If the above is true, you should try, for the moment, to disable
> multi-luns support.
> No need to recompile the kernel, the following boot setup command
> under LILO prompt should work:
>
> max_scsi_luns=1
>
> The hang of the insmod process is in my opinion not due to the ncr
> driver.
>
>
> Gerard.
>
>
> On Thu, 6 Feb 1997 Dario_Ballabio@milano.europe.dg.com wrote:
>
> > I'm trying to install linux on an AViiON 5900 (quad PPro 200Mhz, 1Gb memory)
> > connected to a CLARiiON disk array by an NCR SYMBIOS diff card (rev. 3.07).
> > Actually the ncr53c8xx driver hangs just after scanning the devices on
> > the disk array. The behaviour is the same booting both stock 2.0.28
> > and stock 2.1.25 (no SMP in both cases), with the ncr driver in the system
> > or loaded as a module. Here the syslog output for 2.0.28 when the ncr
> > driver is loaded as a module. After this the insmod process just hangs,
> > but the system is still fully operational (except for the devices detected
> > on the ncr scsi bus, which are not operational).
> > Any suggestion from the ncr guys?
> >
> > PS: the same system works fine with both DG/UX and Netware 4.11.
> >
> > ncr53c8xx : at PCI bus 0, device 11, function 0
> > ncr_attach: unit=0 chip=825 base=feaffc00, io_port=fc00, irq=11
> > ncr53c825-0: using memory mapped IO at virtual address 0x484bc00
> > ncr53c825-0: initial value of SCNTL3 = 03, final = 13
> > ncr53c825-0: requesting shared irq 11 (dev_id=0x383c068)
> > ncr53c825-0: restart (scsi reset).
> > scsi2 : ncr53c8xx (rel 1.12d)
> > scsi : 3 hosts.
> > ncr53c825-0-<target 0, lun 0>: using tagged command queueing, up to 4 cmds/lun
> > Vendor: DGC Model: DISK Rev: 0816
> > Type: Direct-Access ANSI SCSI revision: 02
> > Detected scsi disk sda at scsi2, channel 0, id 0, lun 0
> > ncr53c825-0-<target 0, lun 0>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 1>: using tagged command queueing, up to 4 cmds/lun
> > Vendor: DGC Model: DISK Rev: 0816
> > Type: Direct-Access ANSI SCSI revision: 02
> > Detected scsi disk sdb at scsi2, channel 0, id 0, lun 1
> > ncr53c825-0-<target 0, lun 0>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 1>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 2>: using tagged command queueing, up to 4 cmds/lun
> > Vendor: DGC Model: DISK Rev: 0816
> > Type: Direct-Access ANSI SCSI revision: 02
> > Detected scsi disk sdc at scsi2, channel 0, id 0, lun 2
> > ncr53c825-0-<target 0, lun 0>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 1>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 2>: using tagged command queueing, up to 4 cmds/lun
> > ncr53c825-0-<target 0, lun 3>: using tagged command queueing, up to 4 cmds/lun
> > Vendor: DGC Model: DISK Rev: 0816
> > Type: Direct-Access ANSI SCSI revision: 02
> > Detected scsi disk sdd at scsi2, channel 0, id 0, lun 3
>
