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Re: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi,
The attached patch supports dynamic detection of BARs (both MMIO and
PIO). Hopefully it can alleviate some of the issues you saw with ATI gfx
passthru. Please let me know whether it works better for you.
Thanks,
-Wei
On 12/07/2010 04:00 AM, Pasi Kärkkäinen wrote:
On Wed, Oct 13, 2010 at 04:37:10PM -0500, Huang2, Wei wrote:
Sorry, hold on a second. This fix seems corrupt my pci config space after
several runs.
Hello,
Any updates to these patches? Many users have been asking about amd/ati vga
passthru stuff..
-- Pasi
-Wei
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Huang2, Wei
Sent: Wednesday, October 13, 2010 3:47 PM
To: djmagee@xxxxxxxxxxxx; Kay, Allen M; Ian Jackson
Cc: Wang2, Wei; Xen-devel
Subject: RE: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru
support
Hi Allen and Doug,
Could you fix the following line in save_pci_conf_space() of
tools/python/xen/util/pci.py?
"for i in range(0, 256, 4):" to "for i in range(0, 512, 4):"
This solves my black screen issue. Please let me know the results.
Thanks,
-Wei
From: djmagee@xxxxxxxxxxxx [mailto:djmagee@xxxxxxxxxxxx]
Sent: Friday, October 08, 2010 10:53 AM
To: Huang2, Wei; Kay, Allen M; Ian Jackson
Cc: Xen-devel; Wang2, Wei
Subject: RE: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru
support
Wei,
These were guests that had never seen the catalyst driver
before. I booted each three with the graphics device and usb devices
assigned, they worked fine using the basic VGA driver, then installed
fresh Catalyst 10.9, rebooted, and each one crashed.
Let me know if there's any other info I can provide that
will help you debug. The motherboard is a DQ45CB, running xen-unstable
c/s 22155 using `dom0_mem=768M iommu=1' on the grub line, and using pvops
Dom0 from stable-2.6.32.x commit 179eca50.
Doug Magee
From: Huang2, Wei [mailto:Wei.Huang2@xxxxxxx]
Sent: Friday, October 08, 2010 11:41 AM
To: djmagee@xxxxxxxxxxxx; Kay, Allen M; Ian Jackson
Cc: Xen-devel; Wang2, Wei
Subject: RE: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru
support
Hi Doug,
Regarding Catalyst driver, we never saw guest crashing. Was it a fresh
Catalyst installation or an existing guest image? We felt this VBIOS patch
might not provide all necessary resources to driver, which got upset.
Currently we are debugging it with our driver team and will let you know
the update.
Thanks,
-Wei
From: djmagee@xxxxxxxxxxxx [mailto:djmagee@xxxxxxxxxxxx]
Sent: Friday, October 08, 2010 9:41 AM
To: Huang2, Wei; Kay, Allen M; Ian Jackson
Cc: Xen-devel
Subject: RE: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru
support
Wei,
I've tested with a Radeon 4770 and it the VBIOS works
without a problem, through many guest (re)boots, so it seems pretty
solid. I tested a linux guest (fairly standard Fedora 12), Windows XP,
and Windows 7 (without accelerated drivers). The open radeon linux driver
works fine.
The Catalyst driver fails in Windows XP (STOP 0x000000EA, thread stuck in
device driver), windows 7 (STOP 0x00000116, driver fails to properly
reset?), and linux (total system freeze). This seems to be different than
the `Blank Screen' problem you report, as the driver is clearly not
functioning properly.
Doug Magee
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Huang2, Wei
Sent: Friday, October 08, 2010 9:57 AM
To: Kay, Allen M; Ian Jackson
Cc: Xen-devel
Subject: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Allen,
Yes, Catalyst driver is the one from public website. The driver still has
a minor issue with this VBIOS patch. The purpose of submitting VBIOS
patch is to get community feedbacks. After we figure out the root cause of
black screen, I will formally submit a patch for inclusion.
Thanks,
-Wei
From: Kay, Allen M [mailto:allen.m.kay@xxxxxxxxx]
Sent: Friday, October 08, 2010 2:21 AM
To: Huang2, Wei; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Wei,
Is Catalyst driver the one on AMD website? I think that's what I have in
my win7 guest and it matches the symptom you are describing. "lspci"
reports my ATI card is a V5700 - although it says v3750 on the box. Where
can I get a working driver?
The patch looks reasonable to me in general.
Allen
From: Huang2, Wei [mailto:Wei.Huang2@xxxxxxx]
Sent: Thursday, October 07, 2010 9:06 PM
To: Kay, Allen M; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Allen,
Thanks for testing it out. We have tested this patch with Radeon 4850,
4870, FirePro V5700 and FirePro M5800. Unfortunately we don't have V3750
at hand. It is very possible this patch isn't compatible with V3750. We
will try to get hold of one for debugging. For graphics which work with
this path, users should be able to get rid of emulated gfx (such as
Cirrus). I have successfully installed a Windows guest VM using this
patch.
I also want to point out that there is still an issue. Users will see a
black screen after installing Catalyst driver. Even though the screen
appears to be black, the driver is actually functioning correctly (3DMark
can be run with external monitor). Our driver team is currently debugging
it and they believe this is easy to fix.
What is your opinion on this patch (and the solution) in general?
-Wei
From: Kay, Allen M [mailto:allen.m.kay@xxxxxxxxx]
Sent: Thursday, October 07, 2010 6:58 PM
To: Huang2, Wei; Ian Jackson
Cc: Xen-devel
Subject: RE: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Wei,
This patch did not cause any problems with Intel IGD passthrough for me.
However, the monitor remained blank if I pass through ATI Firepro V3750
either as the primary display device or the secondary device
(gfx_passthru=1/0). Passing it through as the secondary device used to
work.
Have you tested the patch with this graphics card?
Allen
From: Huang2, Wei [mailto:Wei.Huang2@xxxxxxx]
Sent: Thursday, October 07, 2010 9:57 AM
To: Ian Jackson
Cc: Xen-devel; Kay, Allen M
Subject: [RFC][QEMU] ATI graphics VBIOS passthru support
Hi Ian,
There have been a lot of interest on gfx passthru recently. This patch
enables ATI VBIOS in passthru mode. The guest VM system BIOS (including
Windows boot logo) can now show in passthru screen. We have tested with
various Windows and Linux guest VMs. Please help review it. We are also
looking forward to comments and suggestions from Xen community users.
Signed-off-by: Wei Huang<wei.huang2@xxxxxxx>
Signed-off-by: Wei Wang<wei.wang2@xxxxxxx>
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Description: ati_vbios_patch_with_bar_detection.txt
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