[Xen-users] pciback in fedora core 7

["Jason Ward" <jward@xxxxxxxxxxxxxxxx>]

I’m trying to hide a tv tuner card from domain0 using pciback.  I have two problems:

first, I can’t get the pciback feature to work properly; and

second, I don’t know how to specify the equivalent pci=[‘…’] domU setting in the new XML config files.

 

My configuration:

AMD 64

xen.gz-2.6.20-2925.11.fc7           (xen 3.1…) 

vmlinuz-2.6.20-2925.11.fc7xen

 

I’ve followed the directions found at :

http://wiki.xensource.com/xenwiki/Assign_hardware_to_DomU_with_PCIBack_as_module?highlight=%28pciback%29

 

The tv tuner has no linux driver so there is no need to unbind or add an install line to modprobe.conf.  My modprobe.conf looks like:

 

>>>>>>>>>>>>>>>>> 

alias eth0 forcedeth

alias scsi_hostadapter sata_nv

alias scsi_hostadapter1 pata_amd

alias scsi_hostadapter2 usb-storage

alias snd-card-0 snd-hda-intel

options snd-card-0 index=0

options snd-hda-intel index=0

 

# pciback hide devices

options pciback hide=(0000:01:07.0)

<<<<<<<<<<<<<<<<<<<<<<< 

 

My rc.local looks like:

>>>>>>>>>>>>>>>>>>>>>>> 

#/bin/sh

#

# This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style init stuff.

 

touch /var/lock/subsys/local

 

#make sure our pciback module is loaded

modprobe pciback

 

# the tv tuner (no linux driver so we don't need to unbind

SLOT=0000:01:07.0

#echo -n $SLOT > /sys/bus/pci/drivers/xxxx/unbind

echo -n $SLOT > /sys/bus/pci/drivers/pciback/new_slot 2>/new_slot.txt

echo -n $SLOT > /sys/bus/pci/drivers/pciback/bind 2>/bind.txt

<<<<<<<<<<<<<<<<<<<<<<<< 

 

Since there is no linux driver for the tv tuner, I have no need to unbind it from a current driver or have an install line in modprobe.conf.

 

When this runs the error message I get in /bind.txt is:

./etc/rc.local: line 16: echo: write error: No such device

 

Doing a listing of /sys/bus/pci/devices/pciback gives:

 

[root@merlin pciback]# ls -la

total 0

drwxr-xr-x  2 root root    0 2007-07-10 13:22 .

drwxr-xr-x 22 root root    0 2007-07-10 13:20 ..

lrwxrwxrwx  1 root root    0 2007-07-10 13:28 0000:01:07.0 -> ../../../../devices/pci0000:00/0000:00:06.0/0000:01:07.0

--w-------  1 root root    0 2007-07-10 13:23 bind

lrwxrwxrwx  1 root root    0 2007-07-10 13:28 module -> ../../../../module/pciback

--w-------  1 root root 4096 2007-07-10 13:22 new_id

--w-------  1 root root    0 2007-07-10 13:21 new_slot

-rw-------  1 root root 4096 2007-07-10 13:22 permissive

-rw-------  1 root root 4096 2007-07-10 13:22 quirks

--w-------  1 root root 4096 2007-07-10 13:22 remove_slot

-r--------  1 root root 4096 2007-07-10 13:22 slots

--w-------  1 root root 4096 2007-07-10 13:22 unbind

 

 

 

And the device is still listed in lspci: (3^rd line from the bottom in bold)

 

00:00.0 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a1)

00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a2)

00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a2)

00:01.2 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a2)

00:02.0 USB Controller: nVidia Corporation MCP55 USB Controller (rev a1)

00:02.1 USB Controller: nVidia Corporation MCP55 USB Controller (rev a2)

00:04.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1)

00:05.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)

00:05.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)

00:05.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)

00:06.0 PCI bridge: nVidia Corporation MCP55 PCI bridge (rev a2)

00:06.1 Audio device: nVidia Corporation MCP55 High Definition Audio (rev a2)

00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2)

00:0a.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:0b.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:0c.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:0d.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:0e.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:0f.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)

00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration

00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map

00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller

00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control

01:07.0 Multimedia controller: ATI Technologies Inc Unknown device 4d50

01:08.0 Communication controller: Conexant HSF 56k Data/Fax Modem (rev 01)

07:00.0 VGA compatible controller: nVidia Corporation G71 [GeForce 7900 GS] (rev a1)

 

 

Any ideas on how to get the bind operation to work?

 

Also, does what is the syntax in the xml config file for pci=[‘….’].  Is there a reference page with all the supported xml tags?

 

Thanks!

 

Jason Ward

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