Re: PCI/IRQ hardware question

Further to this thread, the IRQ assignment is a none issue as kernel has irq 
sharing and in any case dmesg does not indicate final assignment. There's 
something about IRQ 11 being a "trigger level" and then final assignment 
happens. I dare not read further into the kernel hacking threads ;0)

Tried switching pci cards around but no difference. It appears that this is 
still an issue with how I've set up for using dvb-t cardaaaand I thought I 
was getting close. Thats it for tonight. Maybe things'll be clearer tomorrow. 
Maybe I should just get one of those knoppix/dvb distros and if it works I 
can reverse engineer the configuration. 

One good thing though, it appears that the RTL8100C onboard lan chip has 
better support and now works without any apparent problem.


> Thanks for that Rod,
>
> (1) DVB driver was compiled as module.
>
> (2) I didn't think I would still have to compile Video for Linux since I'm
> using 2.6.12 and a cx88 line is registering as video) [v4l2] but mayber I
> still do.
>
> (3) I have 3 pci slots in that triton K7 mobo. I had to put in apci nic
> since onboard lan wasn't working with 2.4.24 kernel and I've never checked
> to see if that has changed with later kernels. In any case I had thought
> about reorganising pci cards as well as seeing if I can now do without that
> nic. Maybe tonight.
>
> > Rod Smart <[email protected]> wrote:
> >
> > Have you tried changing the slot that the DVB-T card is living in?
> >
> > The IRQ mapping in the PCI bus is similar to the way it was done in the
> > ISA bus, where the IRQ pins swap electrically between connectors.
> >
> > Did you compile the DVB driver into your Kernel or as a module?
> >
> > Have you compiled in the Video for Linux?  (V4L & V4L2 modules)
> >
> > Here are the results from my setup (Vision Plus BT878 card)
> >
> > lspci
> > 0000:04:00.0 Multimedia video controller: Brooktree Corporation Bt878
> > Video Capture (rev 11)
> > 0000:04:00.1 Multimedia controller: Brooktree Corporation Bt878 Audio
> > Capture (rev 11)
> >
> > lsmod
> > dvb_bt8xx              12420  13
> > dvb_core               85288  14 dvb_bt8xx
> > nxt6000                 8324  1 dvb_bt8xx
> > mt352                   6788  1 dvb_bt8xx
> > dst                    14088  1 dvb_bt8xx
> > bt878                  11720  2 dvb_bt8xx,dst
> > tuner                  22692  0
> > bttv                  154576  2 dvb_bt8xx,bt878
> > video_buf              22660  1 bttv
> > v4l2_common             6784  1 bttv
> > btcx_risc               5896  1 bttv
> > videodev               11136  1 bttv
> > sp887x                  9092  1 dvb_bt8xx
> > cx24110                 9220  1 dvb_bt8xx
> >
> >
> > dmesg
> > Linux video capture interface: v1.00
> > bttv: driver version 0.9.15 loaded
> > bttv: using 8 buffers with 2080k (520 pages) each for capture
> > bttv: Bt8xx card found (0).
> > ACPI: PCI interrupt 0000:04:00.0[A] -> GSI 20 (level, low) -> IRQ 217
> > bttv0: Bt878 (rev 17) at 0000:04:00.0, irq: 217, latency: 32, mmio:
> > 0xe5100000
> > bttv0: detected: Twinhan VisionPlus DVB-T [card=113], PCI subsystem ID
> > is 1822:0001
> > bttv0: using: Twinhan DST + clones [card=113,autodetected]
> > bttv0: gpio: en=00000000, out=00000000 in=00f100fe [init]
> > bttv0: using tuner=4
> > i2c-core: driver i2c TV tuner driver registered.
> > bttv0: add subdevice "dvb0"
> > bt878: AUDIO driver version 0.0.0 loaded
> > bt878: Bt878 AUDIO function found (0).
> > ACPI: PCI interrupt 0000:04:00.1[A] -> GSI 20 (level, low) -> IRQ 217
> > bt878(0): Bt878 (rev 17) at 04:00.1, irq: 217, latency: 32, memory:
> > 0xe5101000
> > DVB: registering new adapter (bttv0).
> > dst_check_ci: recognize DTTDIG
> > DST type : terrestrial
> > DST type flags :
> > DVB: registering frontend 0 (DST DVB-T)...
> >
> >
> > ---
> >
> >  Rod Smart
> >  Technical Specialist
> >
> >  Rohwedder Pty. Ltd.
> >  53-55 Rocco Drive
> >  Scoresby 3179
> >  Victoria Australia
> >
> >  Tel: +61 (0)3 9763 6455
> >  Fax: +61 (0)3 9763 7043
> >
> >  URL: http://www.rohwedder.de
> >
> > PLEASE NOTE:
> > This e-mail and its content is not legally binding as long as not
> > explicitly confirmed in writing by Rohwedder Pty Ltd.
> > The information contained is confidential and intended for the
> > exclusive use by the addressee designated above. If you have received
> > this message by mistake, please contact us immediately.
> >
> > >>> [email protected] 16/05/2005 7:29:06 am >>>
> >
> > Rick Miles is a darn nice person I don't care what anybody says!
> > <snip>
> > I think I better fix this to say "I can"
> > After compiling xawtv I found that I can scan for analog stations
> > ......
> > <snip>
> >
> > --
> > Cheers,
> >
> > Rick Miles
> >
> > Movement stopped is no movement,
> > and rest set in motion is no rest.
> >
> > Written on Sweetmorn, the 63rd of Discord, 3171
> > http://www.members.optusnet.com.au/~rickfrm/
> >
> >
> > _______________________________________________
> > Melbourne Linux Users Group (Australia)
> > MLUG Web Site: http://www.mlug.org.au/
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>
> _______________________________________________
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-- 
Cheers,

Rick Miles

Movement stopped is no movement,
and rest set in motion is no rest.

Written on Sweetmorn, the 63rd of Discord, 3171 
http://www.members.optusnet.com.au/~rickfrm/