sharing PCI devices

sharing PCI devices

[Darko Hojnik]

Hello List

With the help from Mark Williamson in the List here i can now start some 
propper virtual OS in XEN.
My Todolist is not finished, because i have on my Wish list an Emulator 
there i can share some PCI devices with them. In the Moment i run XEN 
inside VMware and i want to share the USB Controller simple for testing. 
After them i will install one Debian on a real Hardware there i need to 
share one ISDN Controller ( Fritz Card DSL from AVM ) and one DVB Card 
on virtual Computers.

My Problem now, i didn't have really understand how i have write it 
correctly in the Configfile so that Guest Systems have access to the PCI 
Card

here the simple Config file

kernel = "/boot/vmlinuz-2.6.10-xen0"
memory = 64
name = "sarge-test1"
nics = 1
pci = ['x',0000:00:07.2]
disk = ['file:/root/sarge,sda1,w']
root = "/dev/sda1 ro"

Server:~# lspci
0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host 
bridge (rev 01)
0000:00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 08)
0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB
0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 08)
0000:00:0f.0 VGA compatible controller: VMWare Inc [VMWare SVGA II] PCI 
Display Adapter
0000:00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30) 
[MultiMaster 10] (rev 01)
0000:00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 
[PCnet32 LANCE] (rev 10)
Server:~#


Maybe somone can help me again, regards Darko



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Re: sharing PCI devices

[Mark Williamson]

> My Todolist is not finished, because i have on my Wish list an Emulator
> there i can share some PCI devices with them.

What do you mean by "share"?

You can share e.g. a network card using the Xen virtual network interface, a 
disk driver using the virtual block interface.

In the unstable tree there's some support for giving domUs control of 
individual USB ports (like doing USB passthrough in VMWare), although this 
only works for Linux 2.4 at the moment.

Note that you can't have two domains controlling a PCI card directly - this 
will only end in tears.  You have to go through one of the virtual drivers.

> In the Moment i run XEN 
> inside VMware and i want to share the USB Controller simple for testing.

> After them i will install one Debian on a real Hardware there i need to
> share one ISDN Controller ( Fritz Card DSL from AVM ) and one DVB Card
> on virtual Computers.

You can presumably share access to the ISDN controller using virtual network 
devices and NAT.

For sharing the DVB card, you'd need to find some sort of e.g. network based 
solution.  There must be some sort of daemon for streaming video between 
computers that you can use for this.  Just treat it like the VMs were 
separate machines.

> My Problem now, i didn't have really understand how i have write it
> correctly in the Configfile so that Guest Systems have access to the PCI
> Card
>
> here the simple Config file
>
> kernel = "/boot/vmlinuz-2.6.10-xen0"
> memory = 64
> name = "sarge-test1"
> nics = 1
> pci = ['x',0000:00:07.2]

I think the correct syntax is:
pci = [ '0x00,0x07,0x02' ]

Note that you _have_ to hide this device from dom0 using the physdev_dom0_hide 
command line option to Xen (or omit the driver for the device from dom0's 
config).  Otherwise, dom0 will try to take control of it.  This is important. 
Allowing two domains to see a PCI device simultaneously can lead to all sorts 
of bad behaviour.

IIRC, the syntax for this is:
physdev_dom0_hide=(00,07.2)
but to verify it's worked, you should look for something like "hidden device 
(00,07.2) from domain 0".  If that's not there then it didn't work!

> Maybe somone can help me again, regards Darko

HTH,
Mark


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Re: sharing PCI devices

[Darko Hojnik]

Mark Williamson wrote:

I think the correct syntax is:
pci = [ '0x00,0x07,0x02' ]


This doesn't work but i experimented based on this Idea with other 
syntaxes and the right syntax is  "pci = ['00,07,02']" thank you again :) .

so here my Configfile:

kernel = "/boot/vmlinuz-2.6.10-xen0"
memory = 64
name = "sarge-test"
nics = 1
disk = ['file:/root/sarge,sda1,w']
root = "/dev/sda1 ro"
physdev_dom0_hide=(00,07,2)
pci = ['00,07,02']


In the Test machine maybe i have accsess to the Controller
test:~# lspci
0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB
test:~#

I didn´t try it really because in the moment anything is loading 
automaticly some Modules on the Host within the USB Modules too. I do 
not know what for an fuc.... Program is doing that. First i tryed these 
Modules to add in /etc/hotplug/blacklist and after them, it doesn´t 
work, i have removed hotplug. The File /etc/modules are controlled too, 
but there are still loading the USB Modules again, grrrrr :)

If that realy works so here is my Goal
I want to install one System there only Job is it to be a Host, harded 
with the Greysecurity Patch and other Stoff. One Guest have directly 
access  to the ISDN/DSL Controller and  will be the Router, Firewall and 
Gateway for the Network. Another Guest get access to the On board ATI 
9200 and the ATI Soundcard to be a Desktop ( sometimes i get guests to 
play Americas Army in a LAN :) ). And the Rest are normal Guests, one 
NFS,SMB and DHCP Server, and one is a LAMP System and for some other 
Services.

Now i have installed VMware, i have installed X to use it and the Router 
is the Host too, because i don´t get access to the ISDN Controller.with 
VMware Maybe with XEN it will be more saver and stabler hopefully too

really thank you Guys :)







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Re: sharing PCI devices

[B.G. Bruce]

On Tue, 2005-02-08 at 17:20, Darko Hojnik wrote:
> Hello List
> 
> With the help from Mark Williamson in the List here i can now start some 
> propper virtual OS in XEN.
> My Todolist is not finished, because i have on my Wish list an Emulator 
> there i can share some PCI devices with them. In the Moment i run XEN 
> inside VMware and i want to share the USB Controller simple for testing. 
> After them i will install one Debian on a real Hardware there i need to 
> share one ISDN Controller ( Fritz Card DSL from AVM ) and one DVB Card 
> on virtual Computers.

IIRC the bridging module is only for ethernet, so you will either have
to find a way to make your ISDN/DSL card appear as an ethernet device
(if it isn't already - I don't have dsl), or switch over to routing.  I
believe there was a patch floating out there that converted ppp/dialup
connections to ethernet so I believe it can be done, but I'm not sure if
the patch still works or can be adapted to your needs.  Check out
lartc.org for the patch - maybe? 

Sharing the dvb card ... can it be done?

B.  

> My Problem now, i didn't have really understand how i have write it 
> correctly in the Configfile so that Guest Systems have access to the PCI 
> Card
> 
> here the simple Config file
> 
> kernel = "/boot/vmlinuz-2.6.10-xen0"
> memory = 64
> name = "sarge-test1"
> nics = 1
> pci = ['x',0000:00:07.2]
> disk = ['file:/root/sarge,sda1,w']
> root = "/dev/sda1 ro"
> 
> Server:~# lspci
> 0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host 
> bridge (rev 01)
> 0000:00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 08)
> 0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
> 0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB
> 0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 08)
> 0000:00:0f.0 VGA compatible controller: VMWare Inc [VMWare SVGA II] PCI 
> Display Adapter
> 0000:00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30) 
> [MultiMaster 10] (rev 01)
> 0000:00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 
> [PCnet32 LANCE] (rev 10)
> Server:~#
> 
> 
> Maybe somone can help me again, regards Darko
> 
> 
> 
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> 


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Re: sharing PCI devices

[Mark Williamson]

> IIRC the bridging module is only for ethernet, so you will either have
> to find a way to make your ISDN/DSL card appear as an ethernet device
> (if it isn't already - I don't have dsl), or switch over to routing.

Using routing is probably best IMO.  Didn't some configuration files for 
routed configurations get checked in recently?

Cheers,
Mark

> I 
> believe there was a patch floating out there that converted ppp/dialup
> connections to ethernet so I believe it can be done, but I'm not sure if
> the patch still works or can be adapted to your needs.  Check out
> lartc.org for the patch - maybe?
>
> Sharing the dvb card ... can it be done?
>
> B.
>
> > My Problem now, i didn't have really understand how i have write it
> > correctly in the Configfile so that Guest Systems have access to the PCI
> > Card
> >
> > here the simple Config file
> >
> > kernel = "/boot/vmlinuz-2.6.10-xen0"
> > memory = 64
> > name = "sarge-test1"
> > nics = 1
> > pci = ['x',0000:00:07.2]
> > disk = ['file:/root/sarge,sda1,w']
> > root = "/dev/sda1 ro"
> >
> > Server:~# lspci
> > 0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host
> > bridge (rev 01)
> > 0000:00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 08)
> > 0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
> > 0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB
> > 0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 08)
> > 0000:00:0f.0 VGA compatible controller: VMWare Inc [VMWare SVGA II] PCI
> > Display Adapter
> > 0000:00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30)
> > [MultiMaster 10] (rev 01)
> > 0000:00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
> > [PCnet32 LANCE] (rev 10)
> > Server:~#
> >
> >
> > Maybe somone can help me again, regards Darko
> >
> >
> >
> > -------------------------------------------------------
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> > Xen-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/xen-devel
>
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Re: sharing PCI devices

[Grzegorz Milos]

> > IIRC the bridging module is only for ethernet, so you will either have
> > to find a way to make your ISDN/DSL card appear as an ethernet device
> > (if it isn't already - I don't have dsl), or switch over to routing.
>
> Using routing is probably best IMO.  Didn't some configuration files for
> routed configurations get checked in recently?
>

They did: these are:
network-route
vif-route
under /etc/xen/scripts for basic routing
network-nat
vif-nat
for NAT

remember to modify /etc/xen/xend-config.sxp. 
Cheers
Gregor

> > I
> > believe there was a patch floating out there that converted ppp/dialup
> > connections to ethernet so I believe it can be done, but I'm not sure if
> > the patch still works or can be adapted to your needs.  Check out
> > lartc.org for the patch - maybe?
> >
> > Sharing the dvb card ... can it be done?
> >
> > B.
> >
> > > My Problem now, i didn't have really understand how i have write it
> > > correctly in the Configfile so that Guest Systems have access to the
> > > PCI Card
> > >
> > > here the simple Config file
> > >
> > > kernel = "/boot/vmlinuz-2.6.10-xen0"
> > > memory = 64
> > > name = "sarge-test1"
> > > nics = 1
> > > pci = ['x',0000:00:07.2]
> > > disk = ['file:/root/sarge,sda1,w']
> > > root = "/dev/sda1 ro"
> > >
> > > Server:~# lspci
> > > 0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host
> > > bridge (rev 01)
> > > 0000:00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 08)
> > > 0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev
> > > 01) 0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB
> > > 0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 08)
> > > 0000:00:0f.0 VGA compatible controller: VMWare Inc [VMWare SVGA II] PCI
> > > Display Adapter
> > > 0000:00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30)
> > > [MultiMaster 10] (rev 01)
> > > 0000:00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970
> > > [PCnet32 LANCE] (rev 10)
> > > Server:~#
> > >
> > >
> > > Maybe somone can help me again, regards Darko
> > >
> > >
> > >
> > > -------------------------------------------------------
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> > > Read honest & candid reviews on hundreds of IT Products from real
> > > users. Discover which products truly live up to the hype. Start reading
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> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/xen-devel
> >
> > -------------------------------------------------------
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> > Read honest & candid reviews on hundreds of IT Products from real users.
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> > Xen-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/xen-devel
>
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-- 
Quidquid latine dictum sit, altum viditur --- Anon


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