Matrox I2C patch

[Ryan Underwood]

I have two bugs open on the mga driver that I'd like some feedback on:

http://bugs.xfree86.org/show_bug.cgi?id=1098

This one implements I2C support for G-series cards with single-chip
dualhead support. (i.e. not G200 MMS)  The purpose is to talk to the
MGA-TVO (Maven) chip which controls everything related to TV output, but
is also used for one of two monitors in a dualhead setup. There is no
public documentation for Maven, so I based my code on matroxfb and
OpenBeOS code.  (None was directly used.)  The end result is that DPMS
and DDC both work on the Maven head, and also that we can tell whether a
monitor is attached or not (if not, we can set timings appropriate for a
TV).  We also should be able to detect the version of the Maven chip,
which will let us get G200-TV working, which uses an earlier version --
I implemented code for that detection based on matroxfb but I'm not sure
if it is working correctly until I find a G200-TV of my own.

I wish I knew how DVI support worked with it.  AFAIK, no G400 was sold
with a DVI port, but there exists an MAFC add-on:
http://www.matrox.com/mga/products/upgrades/flat_panel_g400.cfm
It looks like it can be added onto even dualhead cards as long as the
upgrade connector is not occupied.  I guess that is the reason they
claim that it doesn't work on a single-head G400 that has been upgraded
to dualhead.

This is the first steps towards getting rid of HALlib completely.  It
will not longer be necessary once we are doing our own mode setup on all
heads of all G400 types, because G400 is the last one who needs the HALlib
still.  The TV mode setup is easy because Petr has done most of the
reverse engineering already.  I would really like to find someone that
can check out the DVI angle (or send me a DVI monitor -- on loan of
course!)

Does anyone know what the second port on a G400-TV is:
http://www.tomshardware.com/video/19991118/images/matrox_pcb.gif
It would appear to be a DVI port from that side angle, but it must be
for some special break-out cable with a VGA and NTSC plugs on it.


http://bugs.xfree86.org/show_bug.cgi?id=1401

This one is a quickie fix for a crash which occurs under the described
conditions.  Without this, it is impossible to run a static X server
with a G400 and a dualhead configuration, or to run a dualhead
configuration without HAL and have a graceful failure -- as soon as any
display update occurs, you get a server segfault.

-- 
Ryan Underwood, <[EMAIL PROTECTED]>


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Re: Matrox I2C patch

[Andrew C Aitchison]

On Sat, 12 Jun 2004, Ryan Underwood wrote:
> 
> I have two bugs open on the mga driver that I'd like some feedback on:
> 
> http://bugs.xfree86.org/show_bug.cgi?id=1098

bugs.xfree86.org seems to be down right now, but I've dug out my G400DH
and will try this outr when it comes back online.

> This is the first steps towards getting rid of HALlib completely.  It
> will not longer be necessary once we are doing our own mode setup on all
> heads of all G400 types, because G400 is the last one who needs the HALlib
> still.  The TV mode setup is easy because Petr has done most of the
> reverse engineering already.  I would really like to find someone that
> can check out the DVI angle (or send me a DVI monitor -- on loan of
> course!)

I've got a dvi monitor and a VGA monitor on my G550 at work.
What should I be checking out ? Last time I looked DDC only worked on
the first head :-).

> Does anyone know what the second port on a G400-TV is:
> http://www.tomshardware.com/video/19991118/images/matrox_pcb.gif
> It would appear to be a DVI port from that side angle, but it must be
> for some special break-out cable with a VGA and NTSC plugs on it.

That seems the be a *Maven* G400 TV, with a TV-card, TV out and video 
digitiser in an external box. The pdf on the matrox site
http://www.matrox.com/mga/products/marv_g400/home.cfm
suggests it also comes with a straight to TV cable.


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bugzilla down

[georgina o. economou]

On Sat, 12 Jun 2004, Ryan Underwood wrote:
> 
> I have two bugs open on the mga driver that I'd like some feedback on:
> 
> http://bugs.xfree86.org/show_bug.cgi?id=1098

>bugs.xfree86.org seems to be down right now, but I've dug out my G400DH
>and will try this outr when it comes back online.

--
Well I hope that it is not serious as we don't have backups of it as Stuart
said he would handle all administrative concerns.  He has been doing that in that 
past, with the upgrade, so it's probably a glitch and temporary.

Thanks though for the notice.  I'm cc'ing Stuart as he may not know.

Georgina 


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FW: bugzilla down

[georgina o. economou]

 --- On Sat 06/12, georgina o. economou < [EMAIL PROTECTED] > wrote:
From: georgina o. economou [mailto: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
 Cc: [EMAIL PROTECTED]   <== it would help if I could spell...

Date: Sat, 12 Jun 2004 11:51:03 -0400
Subject: bugzilla down

>On Sat, 12 Jun 2004, Ryan Underwood wrote:
 I have two bugs open on the mga driver that I'd like some feedback on:
http://bugs.xfree86.org/show_bug.cgi?id=1098
bugs.xfree86.org seems to be down right now, but I've dug out my G400DH
and will try this outr when it comes back online.

Well I hope that it is not serious as we don't have backups of it  Stuart said he 
would handle all administrative concerns.  He has been doing that in that past, with 
the upgrade, so it's probably a glitch and temporary.

Thanks though for the notice.  I'm cc'ing Stuart as he may not know.

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Re: Matrox I2C patch

[Alex Deucher]

On Sat, 12 Jun 2004 05:06:25 -0500, Ryan Underwood
<[EMAIL PROTECTED]> wrote:
> 
> 
> I have two bugs open on the mga driver that I'd like some feedback on:
> 
> http://bugs.xfree86.org/show_bug.cgi?id=1098
> 
> This one implements I2C support for G-series cards with single-chip
> dualhead support. (i.e. not G200 MMS)  The purpose is to talk to the
> MGA-TVO (Maven) chip which controls everything related to TV output, but
> is also used for one of two monitors in a dualhead setup. There is no
> public documentation for Maven, so I based my code on matroxfb and
> OpenBeOS code.  (None was directly used.)  The end result is that DPMS
> and DDC both work on the Maven head, and also that we can tell whether a
> monitor is attached or not (if not, we can set timings appropriate for a
> TV).  We also should be able to detect the version of the Maven chip,
> which will let us get G200-TV working, which uses an earlier version --
> I implemented code for that detection based on matroxfb but I'm not sure
> if it is working correctly until I find a G200-TV of my own.
> 
> I wish I knew how DVI support worked with it.  AFAIK, no G400 was sold
> with a DVI port, but there exists an MAFC add-on:
> http://www.matrox.com/mga/products/upgrades/flat_panel_g400.cfm
> It looks like it can be added onto even dualhead cards as long as the
> upgrade connector is not occupied.  I guess that is the reason they
> claim that it doesn't work on a single-head G400 that has been upgraded
> to dualhead.

As I recall, they just used an external TMDS transmitter connected to
one of the crtcs.  One of the savage4 cards I have has a DVI port that
works that way, and it works fine, including ddc.  the tmds
transmitter works transparently.

> 
> This is the first steps towards getting rid of HALlib completely.  It
> will not longer be necessary once we are doing our own mode setup on all
> heads of all G400 types, because G400 is the last one who needs the HALlib
> still.  The TV mode setup is easy because Petr has done most of the
> reverse engineering already.  I would really like to find someone that
> can check out the DVI angle (or send me a DVI monitor -- on loan of
> course!)

I can help with the DVI stuff.  I have a G550.

> 
> Does anyone know what the second port on a G400-TV is:
> http://www.tomshardware.com/video/19991118/images/matrox_pcb.gif
> It would appear to be a DVI port from that side angle, but it must be
> for some special break-out cable with a VGA and NTSC plugs on it.

http://marvel.sourceforge.net/

> 
> http://bugs.xfree86.org/show_bug.cgi?id=1401
> 
> This one is a quickie fix for a crash which occurs under the described
> conditions.  Without this, it is impossible to run a static X server
> with a G400 and a dualhead configuration, or to run a dualhead
> configuration without HAL and have a graceful failure -- as soon as any
> display update occurs, you get a server segfault.
> 
> --
> Ryan Underwood, <[EMAIL PROTECTED]>
> 
> 
> 
> signature.asc - 1K
>
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Re: FW: bugzilla down

[Stuart Anderson]

On Sat, 12 Jun 2004, georgina o. economou wrote:

> Thanks though for the notice.  I'm cc'ing Stuart as he may not know.

Sorry about that. Apache fell over this morning, but it's back now.


Stuart

Stuart R. Anderson   [EMAIL PROTECTED]
Network & Software Engineering   http://www.netsweng.com/
1024D/37A79149:  0791 D3B8 9A4C 2CDC A31F
 BD03 0A62 E534 37A7 9149
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Re: Matrox I2C patch

[Andrew C Aitchison]

On Sat, 12 Jun 2004, Ryan Underwood wrote:

> 
> I have two bugs open on the mga driver that I'd like some feedback on:
> 
> http://bugs.xfree86.org/show_bug.cgi?id=1098

mga_maven.h seems to be missing from
http://bugs.xfree86.org/attachment.cgi?id=1236&action=view

Can I use
http://bugs.xfree86.org/attachment.cgi?id=1003&action=view
instead ?

-- 
Andrew C. Aitchison Cambridge
[EMAIL PROTECTED]

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Re: FW: bugzilla down

[georgina o. economou]

Super!  Thanks again Stu.


G- 


 --- On Sat 06/12, Stuart Anderson < [EMAIL PROTECTED] > wrote:
From: Stuart Anderson [mailto: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Date: Sat, 12 Jun 2004 12:37:45 -0400 (EDT)
Subject: Re: FW: bugzilla down
Apache fell over this morning, but it's back now.

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Re: 3dfx driver on Pegasos II

[Marc Aurele La France]

On Sun, 6 Jun 2004, Matthieu Herrb wrote:

> has someone managed to get the 3dfx driver work on a Pegasos II under
> Linux (or OpenBSD)?
> Out of the box, it fails because apparently the PCI BIOS is not mapping
> the PIO registers (or XFree86 can't find them):

> (EE) TDFX(0): No valid PIO address in PCI config space.

This strikes me as a bug.  Barring a resource crunch, ValidatePci(), called
before the PreInit()'s should have allocated a base if the firmware or kernel
didn't.

Marc.

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Re: Register access on MIPS system

[Marc Aurele La France]

On Wed, 9 Jun 2004, Thomas Winischhofer wrote:

> >>I have looked into this more closely now and it seems there are two
> >>problems:

> >>1) "port" i/o on MIPS (as on ARM32) is done with memory mapped i/o. The
> >>inb/outb macros in compiler.h look smart as they correctly add
> >>IOPortBase to the port number, but IOPortBase is not initialized
> >>throughout the entire XFree86 code as of 4.4.

> >>2) IOPortBase is declared in compiler.h itself and hence isn't global.
> >>Therefore, any module including compiler.h will have to initialize it
> >>before using inX/outX. Since the vgahw module doesn't do this, it can't
> >>be used.

> > The ioBase stuff (for PowerPC) is but a stopgap that can only handle
> > single-domain systems.  It should be replaced.  Domain support associates a
> > base address for the three address spaces (I/O memory & PCI config) each domain
> > is comprised of.

> >>Well. I think I give up for the time being.

> > I'm sorry to hear that.

> Well, I have no choice. I have no hardware myself for testing and that
> crappy SiS stuff doesn't support MMIO based i/o for VGA register access...

It doesn't need to.

> Furthermore I was educated in a mail from Jun Sun who wrote some
> porting-HOWTO for MIPS:

> 

>  >My question: How do I find out about mips_io_port_base from userland
>  >(ie XFree86)?

> You can't.

> However, you can do IO from userland through /dev/port.  I don't know
> if /dev/port is mmap'able at this point.

This points to an insufficient understanding of what PCI is.

Marc.

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Re: Matrox I2C patch

[Ryan Underwood]

On Sat, Jun 12, 2004 at 12:32:31PM +0100, Andrew C Aitchison wrote:
> 
> I've got a dvi monitor and a VGA monitor on my G550 at work.
> What should I be checking out ? Last time I looked DDC only worked on
> the first head :-).

Well, first of all see if my current mods are working on your G400-DH
setup.  I don't know for sure if the current driver can do DVI mode
setup without teh HAL on G450/G550 or not.  If it can, then it shouldn't
be hard to do the same for G400-DH.  If not, we'll have to put HALlib
under a microscope and hopefully come out with something that works for
DVI on all G-series cards.

-- 
Ryan Underwood, <[EMAIL PROTECTED]>


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Re: Matrox I2C patch

[Ryan Underwood]

On Sat, Jun 12, 2004 at 06:35:21PM +0100, Andrew C Aitchison wrote:
> On Sat, 12 Jun 2004, Ryan Underwood wrote:
> 
> > 
> > I have two bugs open on the mga driver that I'd like some feedback on:
> > 
> > http://bugs.xfree86.org/show_bug.cgi?id=1098
> 
> mga_maven.h seems to be missing from
>   http://bugs.xfree86.org/attachment.cgi?id=1236&action=view
> 
> Can I use
>   http://bugs.xfree86.org/attachment.cgi?id=1003&action=view
> instead ?

Right, I should have named that file better.  Fixed.

-- 
Ryan Underwood, <[EMAIL PROTECTED]>


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