[Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[DG UX]

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Hello all,

We have an old DG/UX machine (2 actually), in production use (scary, I
know).
These days I am trying to virtualize/emulate those machines. As we cannot
upgrade / reinstall the applications on a different platfrom, I am trying to
boot it up (DD'ed all the drives as images) and use it as is.
Attempts with Qemu are going O.K for now, got the bootloader working, but it
doesn't load up the kernel/sytem, probably because it excpects the original
Adaptec SCSI PCI Controller of the disks.


Currently, these DGUX machines only support Qlogic and Adaptec, no IDE
whatsoever and no LSI.
Any way Qemu will support anything like that?

I got to know these DGUX machines very well, and know all the logs locations
and sys/hw info. If you need anything, including system/boot image, let me
know.

Thanks a lot for reading,

Adam

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Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[Avi Kivity]

  On 07/25/2010 04:08 PM, DG UX wrote:
>
> Currently, these DGUX machines only support Qlogic and Adaptec, no IDE 
> whatsoever and no LSI.
> Any way Qemu will support anything like that?
>
> I got to know these DGUX machines very well, and know all the logs 
> locations and sys/hw info. If you need anything, including system/boot 
> image, let me know.

You'll need to find the hardware specifications for one of these cards, 
then find/fund someone to implement them.  It shouldn't be too difficult.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[Jes Sorensen]

On 07/25/10 21:39, Avi Kivity wrote:
>  On 07/25/2010 04:08 PM, DG UX wrote:
>>
>> Currently, these DGUX machines only support Qlogic and Adaptec, no IDE
>> whatsoever and no LSI.
>> Any way Qemu will support anything like that?
>>
>> I got to know these DGUX machines very well, and know all the logs
>> locations and sys/hw info. If you need anything, including system/boot
>> image, let me know.
> 
> You'll need to find the hardware specifications for one of these cards,
> then find/fund someone to implement them.  It shouldn't be too difficult.
> 
An alternative could be to implement a virtio-blk driver for DG UX - not
sure how hard it is to write drivers for that beast, but it might be
simpler than handling all the corner cases of emulating the Adaptec.

Jes

Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[DG UX]

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It's an AIC-7880 CHIP

On Mon, Jul 26, 2010 at 12:43 PM, Jes Sorensen <Jes.Sorensen@redhat.com>wrote:

> On 07/25/10 21:39, Avi Kivity wrote:
> >  On 07/25/2010 04:08 PM, DG UX wrote:
> >>
> >> Currently, these DGUX machines only support Qlogic and Adaptec, no IDE
> >> whatsoever and no LSI.
> >> Any way Qemu will support anything like that?
> >>
> >> I got to know these DGUX machines very well, and know all the logs
> >> locations and sys/hw info. If you need anything, including system/boot
> >> image, let me know.
> >
> > You'll need to find the hardware specifications for one of these cards,
> > then find/fund someone to implement them.  It shouldn't be too difficult.
> >
> An alternative could be to implement a virtio-blk driver for DG UX - not
> sure how hard it is to write drivers for that beast, but it might be
> simpler than handling all the corner cases of emulating the Adaptec.
>
> Jes
>
>

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Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[DG UX]

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Avi,  It's an AIC-7880 CHIP.
Linux has aic7xxx open source drivers, I am sure one can use those to
implement them into Qemu.
Just how "shouldn't be too difficult" should it be? I am sure it'll help a
lot of Adaptec users, regardless of DG/UX or other platforms.

On Mon, Jul 26, 2010 at 12:45 PM, DG UX <dgunix@gmail.com> wrote:

> It's an AIC-7880 CHIP
>
>
> On Mon, Jul 26, 2010 at 12:43 PM, Jes Sorensen <Jes.Sorensen@redhat.com>wrote:
>
>> On 07/25/10 21:39, Avi Kivity wrote:
>> >  On 07/25/2010 04:08 PM, DG UX wrote:
>> >>
>> >> Currently, these DGUX machines only support Qlogic and Adaptec, no IDE
>> >> whatsoever and no LSI.
>> >> Any way Qemu will support anything like that?
>> >>
>> >> I got to know these DGUX machines very well, and know all the logs
>> >> locations and sys/hw info. If you need anything, including system/boot
>> >> image, let me know.
>> >
>> > You'll need to find the hardware specifications for one of these cards,
>> > then find/fund someone to implement them.  It shouldn't be too
>> difficult.
>> >
>> An alternative could be to implement a virtio-blk driver for DG UX - not
>> sure how hard it is to write drivers for that beast, but it might be
>> simpler than handling all the corner cases of emulating the Adaptec.
>>
>> Jes
>>
>>
>

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Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[Avi Kivity]

  On 07/29/2010 10:38 PM, DG UX wrote:
> Avi,  It's an AIC-7880 CHIP.
> Linux has aic7xxx open source drivers, I am sure one can use those to 
> implement them into Qemu.

That "one" will have to be you.  I don't see why anyone else would be 
interested.

Note that writing a device model based on a driver will only emulate the 
features used by that driver; other drivers may use other features.

> Just how "shouldn't be too difficult" should it be?

If you have a spec, it's just a matter of implementing it register by 
register.

> I am sure it'll help a lot of Adaptec users, regardless of DG/UX or 
> other platforms.

Most Adaptec users will switch to IDE or virtio-blk.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

Re: [Qemu-devel] Old DGUX Machine and Adaptec SCSI PCI Controller

[Artyom Tarasenko]

2010/7/25 DG UX <dgunix@gmail.com>:
> Hello all,
>
> We have an old DG/UX machine (2 actually), in production use (scary, I
> know).
> These days I am trying to virtualize/emulate those machines. As we cannot
> upgrade / reinstall the applications on a different platfrom, I am trying to
> boot it up (DD'ed all the drives as images) and use it as is.
> Attempts with Qemu are going O.K for now, got the bootloader working, but it
> doesn't load up the kernel/sytem, probably because it excpects the original
> Adaptec SCSI PCI Controller of the disks.
>
> Currently, these DGUX machines only support Qlogic and Adaptec, no IDE
> whatsoever and no LSI.

What sort of Adaptec and Qlogic? qemu emulates a ncr53c9x chip for
sparc & ppc machines, and I think there used to be an Adaptec card
with this chip.

> Any way Qemu will support anything like that?
>
> I got to know these DGUX machines very well, and know all the logs locations
> and sys/hw info. If you need anything, including system/boot image, let me
> know.
>
> Thanks a lot for reading,
>
> Adam



-- 
Regards,
Artyom Tarasenko

solaris/sparc under qemu blog: http://tyom.blogspot.com/