[Xen-users] qla2xxx passthrough

[Simon Hintermann <hintermann.simon@xxxxxxxxx>]

Hello all,

I'm working with a qlogic fiber channel connection to my SAN. My goal is to access it directly from a domU to build up an iscsitarget server. Working with Xen 3.2, I tried to access it by a simple pci = [ ... ] in the cfg file, but I get an ugly:

[    1.498824] qla2xxx 0000:00:01.1: enabling device (0000 -> 0002)
[    1.499221] qla2xxx 0000:00:01.1: Found an ISP2432, irq 17, iobase 0xd1024000
[    1.499470] qla2xxx 0000:00:01.1: [ERROR] Failed to allocate memory for adapter
[    1.499510] qla2xxx: probe of 0000:00:01.1 failed with error -12


Here is my lspci:

# lspci
06:00.0 Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)
06:00.1 Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)


Here are the boot option (menu.lst):

title           Xen 3.2-1-i386 / Debian GNU/Linux, kernel 2.6.26-1-xen-686 (hd0)
root            (hd0,0)
kernel          /xen-3.2-1-i386.gz
module          /vmlinuz-2.6.26-1-xen-686 root=/dev/mapper/vg00-root ro console=tty0 pciback.hide=(0000:06:00.0)(0000:06:00.1) pciback.permissive
module          /initrd.img-2.6.26-1-xen-686


Here is the pci line (iscsitarget.cfg):

pci = [ '06:00.0','06:00.1' ]


Here is my pciback content:

/sys/bus/pci/drivers/pciback# ls -la
total 0
drwxr-xr-x  2 root root    0 mar 23 11:52 .
drwxr-xr-x 17 root root    0 mar 23 11:46 ..
lrwxrwxrwx  1 root root    0 mar 23 11:48 0000:06:00.0 -> ../../../../devices/pci0000:00/0000:00:1c.0/0000:06:00.0
lrwxrwxrwx  1 root root    0 mar 23 11:51 0000:06:00.1 -> ../../../../devices/pci0000:00/0000:00:1c.0/0000:06:00.1


And finally the content of xend-pci-quirks.sxp:

(qla2xxx
        (pci_ids   
                ('1077:2432:1077:0138' # Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)
                )  
        )

        (pci_config_space_fields
                ('00000004:2:00000000' # From pciback report (cat /sys/bus/pci/drivers/pciback/quirks)
     '0000003c:1:00000000'
     '0000003d:1:00000000'
     '0000000c:1:00000000'
     '0000000d:1:00000000'
     '0000000f:1:00000000'
     '00000010:4:00000000'
     '00000014:4:00000000'
     '00000018:4:00000000'
     '0000001c:4:00000000'
     '00000020:4:00000000'
     '00000024:4:00000000'
     '00000030:4:00000000'
     '00000074:2:00000000'
     '00000076:2:00000000'
     '00000078:4:00000000'
     '00000044:2:00000000'
     '00000046:2:00000000'
     '00000048:2:00000000'
     '0000004a:1:00000000'
     '0000004b:1:00000000'
                )  
        )
)

Hoping someone can give me a hint... 
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