DRM regression (cvs commit: src/sys/dev/drm drm-preprocess.sh...)

Hello!

> Date:      Sun, 9 Apr 2006 20:45:45 +0000 (UTC)
> From:      Eric Anholt <anholtFreeBSD.org>
> To:        src-committersFreeBSD.org, cvs-srcFreeBSD.org,
>            cvs-allFreeBSD.org
> Subject:   cvs commit: src/sys/dev/drm
drm-preprocess.sh drm.h ...
>
> anholt      2006-04-09 20:45:45 UTC
>
> ...
>  Log:
>  Update to DRM CVS as of 2006-04-09.  The most notable
new feature is the

  This commit has broken DRM on my notebook ASUS M5A (i915GM
graphics). drm
no longer attaches; here is relevant diff of old (OK) and
new (failed)
verbose dmesg:

  agp0: detected 7932k stolen memory
  agp0: aperture size is 256M
  drm0: <Intel i915GM> on vgapci0
-info: [drm] AGP at 0xfeb80000 0MB
-info: [drm] Initialized i915 1.2.0 20041217
+error: [drm:pid0:drm_load] *ERROR* Card isn't AGP, or
couldn't initialize
 	AGP.
+device_attach: drm0 attach returned 12
  vgapci1: <VGA-compatible display> mem
0xfea80000-0xfeafffff at device 2.1 on
 	pci0

Reverting just this commit (w/o touching rest of the tree)
and rebuilding
drm module fixes the problem. I would like to provide any
additional 
information that could help you to find and fix the issue.


Sincerely, Dmitry
-- 
Atlantis ISP, System Administrator
e-mail:  dmitryatlantis.dp.ua
nic-hdl: LYNX-RIPE
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On Tue, 2006-04-11 at 23:30 +0300, Dmitry Pryanishnikov
wrote:
> Hello!
> 
> > Date:      Sun, 9 Apr 2006 20:45:45 +0000 (UTC)
> > From:      Eric Anholt <anholtFreeBSD.org>
> > To:        src-committersFreeBSD.org, cvs-srcFreeBSD.org,
> >            cvs-allFreeBSD.org
> > Subject:   cvs commit: src/sys/dev/drm
drm-preprocess.sh drm.h ...
> >
> > anholt      2006-04-09 20:45:45 UTC
> >
> > ...
> >  Log:
> >  Update to DRM CVS as of 2006-04-09.  The most
notable new feature is the
> 
>   This commit has broken DRM on my notebook ASUS M5A
(i915GM graphics). drm
> no longer attaches; here is relevant diff of old (OK)
and new (failed)
> verbose dmesg:
> 
>   agp0: detected 7932k stolen memory
>   agp0: aperture size is 256M
>   drm0: <Intel i915GM> on vgapci0
> -info: [drm] AGP at 0xfeb80000 0MB
> -info: [drm] Initialized i915 1.2.0 20041217
> +error: [drm:pid0:drm_load] *ERROR* Card isn't AGP, or
couldn't initialize
>  	AGP.
> +device_attach: drm0 attach returned 12
>   vgapci1: <VGA-compatible display> mem
0xfea80000-0xfeafffff at device 2.1 on
>  	pci0

How about if you build the module with "make
-DDRM_DEBUG=1"?

Hello!

On Tue, 11 Apr 2006, Eric Anholt wrote:
>>>  Update to DRM CVS as of 2006-04-09.  The most
notable new feature is the
>>
>>   This commit has broken DRM on my notebook ASUS
M5A (i915GM graphics). drm
>> no longer attaches; here is relevant diff of old
(OK) and new (failed)
>> verbose dmesg:
>>
>>   agp0: detected 7932k stolen memory
>>   agp0: aperture size is 256M
>>   drm0: <Intel i915GM> on vgapci0
>> -info: [drm] AGP at 0xfeb80000 0MB
>> -info: [drm] Initialized i915 1.2.0 20041217
>> +error: [drm:pid0:drm_load] *ERROR* Card isn't
AGP, or couldn't initialize
>>  	AGP.
>> +device_attach: drm0 attach returned 12
>>   vgapci1: <VGA-compatible display> mem
0xfea80000-0xfeafffff at device 2.1 on
>>  	pci0
>
> How about if you build the module with "make
-DDRM_DEBUG=1"?

  Sure. First I did "cd /sys/modules/drm; make
-DDRM_DEBUG=1", but noticed
that this didn't pass DRM_DEBUG to cc and thus made exactly
the same binary.
Then I evaluated proper CFLAGS and did:

CFLAGS="-DDRM_DEBUG=1 -O2 -fno-strict-aliasing
-pipe" make obj depend \
 		all install

Here is relevant part of the new verbose dmesg.boot:

vgapci0: <VGA-compatible display> port 0xec00-0xec07
mem
 
0xfeb80000-0xfebfffff,0xd0000000-0xdfffffff,0xfeb40000-0xfeb
7ffff irq 16 at
  device 2.0 on pci0
agp0: <Intel 82915GM (915GM GMCH) SVGA controller> on
vgapci0
vgapci0: Reserved 0x80000 bytes for rid 0x10 type 3 at
0xfeb80000
vgapci0: Reserved 0x80000 bytes for rid 0x10 type 3 at
0xfeb80000
vgapci0: Reserved 0x40000 bytes for rid 0x1c type 3 at
0xfeb40000
agp0: detected 7932k stolen memory
agp0: aperture size is 256M
drm0: <Intel i915GM> on vgapci0
[drm:pid0:drm_load]
error: [drm:pid0:drm_load] *ERROR* Card isn't AGP, or
couldn't initialize AGP.
[drm:pid0:drm_lastclose]
device_attach: drm0 attach returned 12
vgapci1: <VGA-compatible display> mem
0xfea80000-0xfeafffff at device 2.1 on
  pci0

So it adds just 2 messages:
"[drm:pid0:drm_load]" and 
"[drm:pid0:drm_lastclose]". I'm not sure
whether it's very useful, but that's
the only relevant difference.

Sincerely, Dmitry
-- 
Atlantis ISP, System Administrator
e-mail:  dmitryatlantis.dp.ua
nic-hdl: LYNX-RIPE
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