Xen devel - Nov 2008 - megaraid sas driver failing in Xen-3.4 unstable version

On Xen-3.4 (unstable version), I have created CentOS HVM guest & WS2K8 HVM
guest and dedicated MegaRAID SAS controller but I am not able to see the disk
which is connected to MegaRAID SAS controller when I do fdisk -l (vtd support is
enabled in Xen).

Looks like the pci device(MegaRAID SAS controller) is getting dedicated
successfully as I can see the device in the list of pci devices shown by
lspci(on CentOS HVM).

00:06.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS


However the driver is not getting attached properly and fails with the following
error

======================================================================================"dmesg"
of HVM CentOS
megasas: Failed to init firmware
ACPI: PCI interrupt for device 0000:00:06.0 disabled


"/var/log/messages"
pciback 0000:02:0e.0: seizing device
 PCI: Enabling device 0000:02:0e.0 (0190 -> 0192)
 ACPI: PCI Interrupt 0000:02:0e.0[A] -> GSI 66 (level, low) -> IRQ 25
 ACPI: PCI interrupt for device 0000:02:0e.0 disabled
======================================================================================


On WS2K8 HVM, I am able to see MegaRAID SAS controller under "Storage
Controllers" on WS2K8 HVM and the status of device is

========================================================================================================================================================This
device cannot start.(Code 10)
Description:
 Windows was able to successfully install device driver software, but the driver
software encountered a problem when it tried to run. The problem code is
 10.
Problem Signature:
 Problem Event Name:PnPDeviceProblemCode
 Architecture: x86
 Hardware Id: PCI\VEN_1000&DEV_0411&SUBSYS_10081000&REV_00
 Setup class GUID: {4d36e97b-e325-11ce-bfc1-08002be10318}
 PnP problem code: 0000000A
 Driver name: megasas.sys
 Driver version: 2.13.0.32
 Driver date: 01-19-2008
 OS Version: 6.0.6001.2.1.0.272.7
 Locale ID: 1033
 =======================================================================================================================================================And
also I am not able to see the disk which is connected to MegaRAID SAS controller

==========================================================================="/var/log/messages"
pciback 0000:02:0e.0: seizing device
PCI: Enabling device 0000:02:0e.0 (0190 -> 0192)
ACPI: PCI Interrupt 0000:02:0e.0[A] -> GSI 66 (level, low) -> IRQ 25
ACPI: PCI interrupt for device 0000:02:0e.0 disabled
===========================================================================

Any clues ?

Thanks,
Ramesh


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