Re: Upgrade Blues 2.4.20 Ben H kernel

Re: Upgrade Blues 2.4.20 Ben H kernel

[Manuj Dhingra]

> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Subject: Re: Upgrade Blues 2.4.20 Ben H kernel
>
> On Fri, 2003-03-07 at 18:57, Ira Weiny wrote:
> > Well I decided it was time to get up to date on my TiBook.
> >
> > 2) m3mirror does not work?  This one really puzzles me.  lcd:0 turns
> off the
> >    LCD screen but crt:1 does not turn on the outside monitor.  I
> rebooted into
> >    Mac OS and the external port works.  The only thing I can think of
> is that I
> >    did use the S-video port on Mac OS to show some pictures.  Is there
> >    something in OF which Mac OS would set which would make the external
> port
> >    not work with m3mirror?
>
> Well... All it does is to enable the port by sending it the same signal
> as the LCD. This works approx. well on the Pismo, but not with the tipb.
>
> Somebody, I think, is working on proper mirroring based on setting up
> the second CRTC.
>

Well I am, but I have not seen this one before. With Ben's m3mirror and
corresponding ioctls, crt:1 did turn on the external display, it was just
not stable.
Could you please boot with external monitor plugged in at power on and
pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?

cheers,
manuj

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Re: Upgrade Blues 2.4.20 Ben H kernel

[Ira Weiny]

On Mon, 10 Mar 2003 11:48:55 -0500
Manuj Dhingra <manuj_dhingra@ae.gatech.edu> wrote:

>
> >
> > Well... All it does is to enable the port by sending it the same signal
> > as the LCD. This works approx. well on the Pismo, but not with the tipb.
> >
> > Somebody, I think, is working on proper mirroring based on setting up
> > the second CRTC.
> >

Well with your 2.4.15-pre7-ben0 the external monitor was working with my
TiBook.  Worked quite well.  I did not set the external monitor the same as the
LCD 'cause the refresh rates were different but I could turn on the external
and the LCD off and use the external quite well.  So I can tell you that
worked.

>
> Well I am, but I have not seen this one before. With Ben's m3mirror and
> corresponding ioctls, crt:1 did turn on the external display, it was just
> not stable.
> Could you please boot with external monitor plugged in at power on and
> pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?

I did as you ask.

When the machine booted I got this on the external monitor:

...ok
copying OF device tree...done
Initializing fake screen: ATY,RageM3p12A
Calling quiesce
returning 0x01400000 from prom_init

I saw a message concering quiesce before.  Maybe this message was from you.
Sorry I did not keep it.

Once I started X The screen displays garbage but seems to change when I bring
up windows or change desktops.  So something is out there.  Looks like the
frame buffer is out of order or something?  I don't know I am just guessing.

Thanks,
Ira
iweiny@acm.org


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Re: Upgrade Blues 2.4.20 Ben H kernel

[Benjamin Herrenschmidt]

> Well with your 2.4.15-pre7-ben0 the external monitor was working with my
> TiBook.  Worked quite well.  I did not set the external monitor the same as the
> LCD 'cause the refresh rates were different but I could turn on the external
> and the LCD off and use the external quite well.  So I can tell you that
> worked.

Ok, it's a side effect of initializing the second head from OF. Newer
kernel do that to make sure both heads are properly POSTed on all
cards, but that results in OF setting the card in 2 split heads mode
causing the simple tweak used by m3mirror to fail.

I'm afraid I won't fix this, we really need real support for the
second head for mirroring.

Ben.


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Re: Upgrade Blues 2.4.20 Ben H kernel

[Ira Weiny]

On Mon, 10 Mar 2003 11:48:55 -0500
Manuj Dhingra <manuj_dhingra@ae.gatech.edu> wrote:

>
> Well I am, but I have not seen this one before. With Ben's m3mirror and
> corresponding ioctls, crt:1 did turn on the external display, it was just
> not stable.
> Could you please boot with external monitor plugged in at power on and
> pass video=aty128fb:crt:1,lcd:1 as additional boot parameters?
>
>

One more thing I forgot to mention:

m3mirror crt:0  (and 1) will turn it off and on as expected.

Thanks guys,
Ira


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Upgrade Blues 2.4.20 Ben H kernel

[Ira Weiny]

Well I decided it was time to get up to date on my TiBook.

So I went out and bought a copy of Yellow Dog and got apt-get installed and
started hacking.  After some switching pain I got it up and running but found
that I needed a newer kernel to get the networking stuff to work.

no problem...  I rsync'ed Bens tree built and rebooted...

There are 2 problems.

1) My Microdrive which I had hacked in does not work any more.  What is the
   status of the ide-cs driver?  Anyone know?  It is different than when I got
   it to work before and I am not sure where to begin again.

2) m3mirror does not work?  This one really puzzles me.  lcd:0 turns off the
   LCD screen but crt:1 does not turn on the outside monitor.  I rebooted into
   Mac OS and the external port works.  The only thing I can think of is that I
   did use the S-video port on Mac OS to show some pictures.  Is there
   something in OF which Mac OS would set which would make the external port
   not work with m3mirror?

Relative versions
2.4.20-ben5

> cat /proc/cpuinfo
cpu		: 7410, altivec supported
temperature 	: 10-12 C (uncalibrated)
clock		: 500MHz
revision	: 17.3 (pvr 800c 1103)
bogomips	: 996.14
machine		: PowerBook3,2
motherboard	: PowerBook3,2 MacRISC2 MacRISC Power Macintosh
detected as	: 71 (PowerBook Titanium)
pmac flags	: 0000000b
L2 cache	: 1024K unified
memory		: 512MB
pmac-generation	: NewWorld

> cat /proc/fb
0 ATY Rage128

As usual broken and hacking my kernel...  ;-)
Ira Weiny
iweiny@acm.org

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Re: Upgrade Blues 2.4.20 Ben H kernel

[Benjamin Herrenschmidt]

On Fri, 2003-03-07 at 18:57, Ira Weiny wrote:
> Well I decided it was time to get up to date on my TiBook.
>
> So I went out and bought a copy of Yellow Dog and got apt-get installed and
> started hacking.  After some switching pain I got it up and running but found
> that I needed a newer kernel to get the networking stuff to work.
>
> no problem...  I rsync'ed Bens tree built and rebooted...
>
> There are 2 problems.
>
> 1) My Microdrive which I had hacked in does not work any more.  What is the
>    status of the ide-cs driver?  Anyone know?  It is different than when I got
>    it to work before and I am not sure where to begin again.

There are some problems with ide-cs currently. I'll try to work on it
this week-end.

> 2) m3mirror does not work?  This one really puzzles me.  lcd:0 turns off the
>    LCD screen but crt:1 does not turn on the outside monitor.  I rebooted into
>    Mac OS and the external port works.  The only thing I can think of is that I
>    did use the S-video port on Mac OS to show some pictures.  Is there
>    something in OF which Mac OS would set which would make the external port
>    not work with m3mirror?

Well... All it does is to enable the port by sending it the same signal
as the LCD. This works approx. well on the Pismo, but not with the tipb.

Somebody, I think, is working on proper mirroring based on setting up
the second CRTC.


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Re: Upgrade Blues 2.4.20 Ben H kernel

[Mich Lanners]

On   8 Mar, this message from Benjamin Herrenschmidt echoed through
cyberspace:
>> 1) My Microdrive which I had hacked in does not work any more.  What
>>    is the status of the ide-cs driver?  Anyone know?  It is different
>>    than when I got it to work before and I am not sure where to begin
>>    again.
>
> There are some problems with ide-cs currently. I'll try to work on it
> this week-end.

You can always try and see whether this helps:

http://lists.linuxppc.org/linuxppc-dev/200302/msg00103.html

Cheers

Michel

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Re: Upgrade Blues 2.4.20 Ben H kernel

[Ira Weiny]

On 08 Mar 2003 16:06:08 +0100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> On Fri, 2003-03-07 at 18:57, Ira Weiny wrote:
> > Well I decided it was time to get up to date on my TiBook.
> >
> >
> > 1) My Microdrive which I had hacked in does not work any more.  What is the
> >    status of the ide-cs driver?  Anyone know?  It is different than when I got
> >    it to work before and I am not sure where to begin again.
>
> There are some problems with ide-cs currently. I'll try to work on it
> this week-end.
>

At the risk of sounding ignorant I have some more information about ide-cs.

I rebooted into 2.4.15 and noted the addresses which the driver uses to talk to
the card.  I have also been able to print the address used in the new kernel
and they are the same address range.  So I must assume that the machine check
is due to something not being set up in the PPC architecture?

What I don't understand is that there does not seem to be anything in
request_region which is PPC specific.  I am sure I am missing something.  I
don't know exactly what a machine check is but, I got this from a book I found:


The causes for machine check exceptions are implementation-dependent, but
typically these causes are related to conditions such as bus parity
errors or attempting to access an invalid physical address.


Why on the first kernel would this address be ok and on the newer version not?
I assumed there would be something in request_region, but I do not see anything
in there PPC specific or architecture specific for that matter.

I don't know if this helps but I am learning...  ;-)

Ira


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