Re: [Xen-devel] RE: [RFC][QEMU] ATI graphics VBIOS passthru support

[Wei Huang <wei.huang2@xxxxxxx>]

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>
> >
> >
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel

ati_vbios_patch_with_bar_detection.txt
Description: ati_vbios_patch_with_bar_detection.txt

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