Nouveau - Mar 2012 - [Bug 47182] New: GeFroce 6150SE nForce 430: misaligned reg 0x0060081D

https://bugs.freedesktop.org/show_bug.cgi?id=47182

             Bug #: 47182
           Summary: GeFroce 6150SE nForce 430: misaligned reg 0x0060081D
    Classification: Unclassified
           Product: xorg
           Version: 7.6 (2010.12)
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: fschaefer.oss at googlemail.com
         QAContact: xorg-team at lists.x.org


On system start-up, the messages "misaligend reg 0x0060081D" appear in
the log:

[    3.165315] nouveau 0000:00:0d.0: setting latency timer to 64
[    3.166731] [drm] nouveau 0000:00:0d.0: Detected an NV40 generation card
(0x04c000a2)
[    3.166739] fb: conflicting fb hw usage nouveaufb vs VESA VGA - removing
generic driver
[    3.169138] [drm] nouveau 0000:00:0d.0: Attempting to load BIOS image from
PRAMIN
[    3.208458] [drm] nouveau 0000:00:0d.0: ... appears to be valid
[    3.208461] [drm] nouveau 0000:00:0d.0: BIT BIOS found
[    3.208464] [drm] nouveau 0000:00:0d.0: Bios version 05.61.32.14
[    3.208467] [drm] nouveau 0000:00:0d.0: TMDS table version 1.1
[    3.208469] [drm] nouveau 0000:00:0d.0: TMDS table script pointers not
stubbed
[    3.208549] [drm] nouveau 0000:00:0d.0: MXM: no VBIOS data, nothing to do
[    3.208552] [drm] nouveau 0000:00:0d.0: DCB version 3.0
[    3.208555] [drm] nouveau 0000:00:0d.0: DCB outp 00: 01000310 00000023
[    3.208558] [drm] nouveau 0000:00:0d.0: DCB outp 01: 00110204 974f0000
[    3.208560] [drm] nouveau 0000:00:0d.0: DCB conn 00: 0000
[    3.208566] [drm] nouveau 0000:00:0d.0: Parsing VBIOS init table 0 at offset
0xDA6D
[    3.208569] [drm] nouveau 0000:00:0d.0: ======= misaligned reg 0x0060081D
======[    3.208576] [drm] nouveau 0000:00:0d.0: ======= misaligned reg
0x0060081D
======[    3.208624] [drm] nouveau 0000:00:0d.0: Parsing VBIOS init table 1 at
offset
0xDBC4
[    3.208626] [drm] nouveau 0000:00:0d.0: Parsing VBIOS init table 2 at offset
0xDBC5
[    3.208677] [drm] nouveau 0000:00:0d.0: Parsing VBIOS init table 3 at offset
0xDD47
[    3.208681] [drm] nouveau 0000:00:0d.0: Parsing VBIOS init table 4 at offset
0xDD90
[    3.209464] [drm] nouveau 0000:00:0d.0: 1 available performance level(s)
[    3.209468] [drm] nouveau 0000:00:0d.0: 0: core 425MHz shader 425MHz
fanspeed 100%
[    3.209475] [drm] nouveau 0000:00:0d.0: c:
[    3.209656] [drm] nouveau 0000:00:0d.0: Detected 256MiB VRAM
[    3.210308] [drm] nouveau 0000:00:0d.0: 64 MiB GART (aperture)
[    3.214207] [drm] nouveau 0000:00:0d.0: DCB type 4 not known
[    3.214209] [drm] nouveau 0000:00:0d.0: Unknown-1 has no encoders, removing
[    3.215658] [drm] nouveau 0000:00:0d.0: Setting dpms mode 3 on vga encoder
(output 0)
[    3.255055] [drm] nouveau 0000:00:0d.0: allocated 1680x1050 fb: 0x49000, bo
f0314200
[    3.255142] fbcon: nouveaufb (fb0) is primary device
[    3.316418] [drm] nouveau 0000:00:0d.0: Setting dpms mode 0 on vga encoder
(output 0)
[    3.316422] [drm] nouveau 0000:00:0d.0: Output VGA-1 is running on CRTC 0
using output A
[    3.318438] fb0: nouveaufb frame buffer device
[    3.318444] [drm] Initialized nouveau 0.0.16 20090420 for 0000:00:0d.0 on
minor 0
[  110.134496] [drm] nouveau 0000:00:0d.0: Setting dpms mode 3 on vga encoder
(output 0)
[  110.168161] [drm] nouveau 0000:00:0d.0: Setting dpms mode 0 on vga encoder
(output 0)
[  110.168173] [drm] nouveau 0000:00:0d.0: Output VGA-1 is running on CRTC 0
using output A


Tested with kernel 3.1.9 an 3.3.0-rc6.

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--- Comment #1 from rgquadro at gmail.com 2012-07-09 16:05:27 PDT ---
Same bug.
[drm] Initialized drm 1.1.0 20060810
[drm] nouveau 0000:00:0d.0: ======= misaligned reg 0x0060081D ======[drm]
nouveau 0000:00:0d.0: ======= misaligned reg 0x0060081D ======

Video :
00:0d.0 VGA compatible controller: NVIDIA Corporation C61 [GeForce 7025 /
nForce 630a] (rev a2)
Kernel : 3.2 & 3.4
Arch : amd64

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https://bugs.freedesktop.org/show_bug.cgi?id=47182

Emil Velikov <emil.l.velikov at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #2 from Emil Velikov <emil.l.velikov at gmail.com> 2012-07-09
20:35:35 PDT ---
Have you experienced any issues with nouveau ?

The messages mentioned are harmless, and iirc indicate a buggy bios than
anything else

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Frank Schaefer <fschaefer.oss at googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #3 from Frank Schaefer <fschaefer.oss at googlemail.com>
2012-07-11 17:54:57 PDT ---
(In reply to comment #2)
> Have you experienced any issues with nouveau ?
Yes, I have several issues with the GeForce 6150SE, e.g. Bug 48434 (, problems
with flash player, pixmap/image/background corruption, ...).

What's the function of reg 0x0060081D ?

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--- Comment #4 from Emil Velikov <emil.l.velikov at gmail.com> 2012-07-14
11:12:16 PDT ---
(In reply to comment #3)
> (In reply to comment #2)
> > Have you experienced any issues with nouveau ?
> 
> Yes, I have several issues with the GeForce 6150SE, e.g. Bug 48434 (,
problems
> with flash player, pixmap/image/background corruption, ...).
> 
> What's the function of reg 0x0060081D ?
Registers should be aligned to 0x4, otherwise bad things may happen depending
on the motherboard chipset

The register mentioned is "off by one" to NV_PCRTC_GPIO_EXT
(0x0060081c).
Whenever nouveau detects a misaligned register, we strip and align it before
accessing it

The bug mentioned is very unlikely to be related to the misaligned registers in
the vbios, as the register in question does handle the crtc gpio (display
controller)

Feel free to take a look at nouveau_bios.c: valid_reg() and bios_rd32()
There are some hints that may help us out and get rid of those annoying
messages


Appreciated

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--- Comment #5 from Frank Schaefer <fschaefer.oss at googlemail.com>
2012-07-28 20:13:43 UTC ---
(In reply to comment #4)
> ...
> The register mentioned is "off by one" to NV_PCRTC_GPIO_EXT
(0x0060081c).
> ...
> Feel free to take a look at nouveau_bios.c: valid_reg() and bios_rd32()
> There are some hints that may help us out and get rid of those annoying
> messages
Hmmm... thanks for the pointer.

According to the comments in valid_reg() and bios_rd32(), some C51 have this
register misaligned on purpose.

There is something special about the DVI-connector of my GeForce 6150SE nForce
430 (NV4C): it is connected via a Sil1364 sDVO !
The DVI connector currently doesn't work (anyone out there with a datasheet
for
the Sil1364 ? ;-) ), so I can't test it. See bug 26797 for details.
No problems with the VGA connector.

I don't know about GeForce 7025 nForce 630a, might be similar ?

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

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