[Nouveau] [Bug 91319] New: Nouveau driver cannot extract FCODE ROM / DCB Block from OpenFirmware Device tree

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91319

            Bug ID: 91319
           Summary: Nouveau driver cannot extract FCODE ROM / DCB Block
                    from OpenFirmware Device tree
           Product: xorg
           Version: unspecified
          Hardware: PowerPC
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: psaisanas at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 117079
  --> https://bugs.freedesktop.org/attachment.cgi?id=117079&action=edit
kernel dmesg log & NVDA,BMP FCODE ROM

Hi,

When running a Powermac 11.2, (G5 Quad - powerpc64) with a Quadro FX4500
(NV47), previous kernels had no issue extracting the FCODE ROM / DCB block via
the OpenFirmware device tree.
Last vanilla kernel that i have compiled that seemed to work fine was kernel
3.18.16.
Normally, it will find the "BIT SIGNATURE" via OpenFirmware method.

However, when compiling a newer vanilla kernel 4.1.2, nouveau seems to have an
issue reading the FCODE ROM / DCB block / from the OpenFirmware device tree.
Also, interestingly, this time around it attempts to use the PROM method and
attempts to find the "BIT SIGNATURE" via this method.
Apparently it found a signature, but looks like garbage and seems like it cant
extract the DCB BLOCK.

As instructed, i have attached a dmesg.log along with a dump of the NVDA,BMP
image out of the following folder:
/sys/firmware/devicetree/base/pci at 0,f0000000/NVDA,Parent at 0/.

Not sure if this is correct, but i have passed the following nouveau module
options as i understood:

options nouveau config="NvMSI=0,debug=debug,VBIOS=trace"

I have placed the kernel dmesg log along with the NVDA,BMP dump in the attached
nouveau_powerpc64_pmac11.2.tar.xz archive.

Please let me know if there is any more info required.

Thanks for your help!

Best Regards,
Peter

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nouveau/attachments/20150713/cdc76135/attachment.html>