[Xen-users] pciback and pci passtrought problems

[Velten Spägele <xen@xxxxxxxxx>]

Hi,

once again, Problems with pciback and pci passthrough

the system

--------------------------------------------------------------------------------

DOMAIN0:~# lspci -tv
-[0000:00]-+-00.0  nVidia Corporation nForce3 250Gb Host Bridge
           +-01.0  nVidia Corporation nForce3 250Gb LPC Bridge
           +-01.1  nVidia Corporation nForce 250Gb PCI System Management
           +-02.0  nVidia Corporation CK8S USB Controller
           +-02.1  nVidia Corporation CK8S USB Controller
           +-02.2  nVidia Corporation nForce3 EHCI USB 2.0 Controller
           +-05.0  nVidia Corporation CK8S Ethernet Controller
           +-08.0  nVidia Corporation CK8S Parallel ATA Controller (v2.5)
           +-0a.0  nVidia Corporation CK8S Serial ATA Controller (v2.5)
           +-0b.0-[0000:01]----00.0  nVidia Corporation NV34 [GeForce 
FX 5200]
           +-0e.0-[0000:02]--+-05.0  Realtek Semiconductor Co., Ltd. 
RTL-8139/8139C/8139C+
           |                 +-06.0  Atheros Communications, Inc. 
AR5212 802.11abg NIC
           |                 +-07.0  Cologne Chip Designs GmbH ISDN 
network controller [HFC-PCI]
           |                 +-08.0  Motorola Wildcard X100P
           |                 \-09.0  Intel Corporation 536EP Data Fax Modem
           +-18.0  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
HyperTransport Technology Configuration
           +-18.1  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Address Map
           +-18.2  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
DRAM Controller
           \-18.3  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Miscellaneous Control
------------------------------------------------------------------------------------

i used this patch

------------------------------------------------------------------------------------
diff -r 6ab55f716ce3 tools/python/xen/util/pci.py
--- a/tools/python/xen/util/pci.py  Thu Oct 09 17:18:11 2008 +0100
+++ b/tools/python/xen/util/pci.py  Fri Oct 10 13:16:00 2008 +0800
@@ -696,6 +696,7 @@ class PciDevice:
     def do_FLR(self):
         """ Perform FLR (Functional Level Reset) for the device.
         """
+        return
         if self.dev_type == DEV_TYPE_PCIe_ENDPOINT:
             # If PCIe device supports FLR, we use it.
             if self.pcie_flr:
diff -r 6ab55f716ce3 tools/python/xen/xend/server/pciif.py
--- a/tools/python/xen/xend/server/pciif.py Thu Oct 09 17:18:11 2008 +0100
+++ b/tools/python/xen/xend/server/pciif.py Fri Oct 10 13:18:25 2008 +0800
@@ -375,6 +375,7 @@ class PciController(DevController):
             pci_dev_list = pci_dev_list + [(domain, bus, slot, func)]

         for (domain, bus, slot, func) in pci_dev_list:
+            continue
             try:
                 dev = PciDevice(domain, bus, slot, func)
             except Exception, e:
--------------------------------------------------------------------------------------

and was activating in the kernel options "PCI_device backend driver as 
built in.
but the result is:

--------------------------------------------------------------------------------------
DOMAIN0:~# dmesg | grep pciback
Bootdata ok (command line is root=/dev/sda2 ro console=tty0 
pciback.hide=(0000:02:05.0)(0000:02:06.0)(0000:02:07.0)(0000:02:08.0)(0000:02:09.0) 
)
Kernel command line: root=/dev/sda2 ro console=tty0 
pciback.hide=(0000:02:05.0)(0000:02:06.0)(0000:02:07.0)(0000:02:08.0)(0000:02:09.0) 

Unknown boot option 
`pciback.hide=(0000:02:05.0)(0000:02:06.0)(0000:02:07.0)(0000:02:08.0)(0000:02:09.0)': 
ignoring
--------------------------------------------------------------------------------------

after trying to load pciback as module:

--------------------------------------------------------------------------------------
echo -n 0000:02:05.0 > /sys/bus/pci/drivers/8139too/unbind
modprobe pciback
echo -n 0000:02:05.0 > /sys/bus/pci/drivers/pciback/new_slot
echo -n 0000:02:05.0 > /sys/bus/pci/drivers/pciback/bind
echo -n 0000:02:06.0 > /sys/bus/pci/drivers/pciback/new_slot
echo -n 0000:02:06.0 > /sys/bus/pci/drivers/pciback/bind
echo -n 0000:02:07.0 > /sys/bus/pci/drivers/pciback/new_slot
echo -n 0000:02:07.0 > /sys/bus/pci/drivers/pciback/bind
---------------------------------------------------------------------------------------

this result with xm:

---------------------------------------------------------------------------------------
DOMAIN0:~# xm create /etc/xen/auto/fli4l
Using config file "/etc/xen/auto/fli4l".
Error: pci: 0000:02:05.0: non-page-aligned MMIO BAR found.
---------------------------------------------------------------------------------------




so can i use the last xen release only with very special Hardware, or 
would it be possible to use it like in the older versions ?



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