[Bluez-devel] re: UART-based bluetooth stuff / serial_cs problems solved?

[Bluez-devel] re: UART-based bluetooth stuff / serial_cs problems solved?

[Kevin Page]

I have a IBM Thinkpad X31 with a CF Socket bluetooth card (rev. G),
which has been one of the serial PCMCIA/CF bluetooth cards which
mysteriously haven't worked since 2.6. Just done a periodic scan of 
the list archives, and thought I'd give the latest kernel at try, 
as changes to serial/UART have been mentioned (I'm normally running
Fedora Core 2 with 2.6.8).

Anyway, basically, it seems to fix things.

With linux-2.6.10-rc1-mm2:

hciattach /dev/ttyS3 socket

seems to complete ok (none of the "BCSP initialization timed out" 
messages I was seeing before). I do get a lone:

hcid[2543]: HCI dev 0 registered
kernel: bcsp_recv: Out-of-order packet arrived, got 1 expected 0
hcid[2543]: HCI dev 0 up

but then I can successfully hcitool scan etc.

I don't know what's changed, but thanks! This seems to be good news.
Unfortunately I haven't had the chance to do more rigorous testing as
the new kernel either doesn't like something else in the thinkpad, or
I screwed up the config :-/

Regards,

kev



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Re: [Bluez-devel] re: UART-based bluetooth stuff / serial_cs problems solved?

[Marcel Holtmann]

Hi Kevin,

> I have a IBM Thinkpad X31 with a CF Socket bluetooth card (rev. G),
> which has been one of the serial PCMCIA/CF bluetooth cards which
> mysteriously haven't worked since 2.6. Just done a periodic scan of 
> the list archives, and thought I'd give the latest kernel at try, 
> as changes to serial/UART have been mentioned (I'm normally running
> Fedora Core 2 with 2.6.8).
> 
> Anyway, basically, it seems to fix things.

this will be perfect and I am going to test my cards that stopped
working. I don't have the Socket one, but some others.

> With linux-2.6.10-rc1-mm2:
> 
> hciattach /dev/ttyS3 socket
> 
> seems to complete ok (none of the "BCSP initialization timed out" 
> messages I was seeing before). I do get a lone:
> 
> hcid[2543]: HCI dev 0 registered
> kernel: bcsp_recv: Out-of-order packet arrived, got 1 expected 0
> hcid[2543]: HCI dev 0 up
> 
> but then I can successfully hcitool scan etc.

The ouf-of-order packet is ok, because BCSP can deal with these things
by itself. Maybe I have to change that message into a debug message.
 
> I don't know what's changed, but thanks! This seems to be good news.
> Unfortunately I haven't had the chance to do more rigorous testing as
> the new kernel either doesn't like something else in the thinkpad, or
> I screwed up the config :-/

Can you retest it with 2.6.10-rc1-bk13 and see if these patches are
already merged back mainline.

Regards

Marcel




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Re: [Bluez-devel] re: UART-based bluetooth stuff / serial_cs problems solved?

[Kevin Page]

On Wed, 3 Nov 2004, Marcel Holtmann wrote:
> > With linux-2.6.10-rc1-mm2:
> > hciattach /dev/ttyS3 socket
> > seems to complete ok (none of the "BCSP initialization timed out" 
> 
> Can you retest it with 2.6.10-rc1-bk13 and see if these patches are
> already merged back mainline.

Ok, just tested this, and hciattach fails with "BCSP initialization
timed out", as it does with earlier kernels - so the significant
modifications must be in the mm2 patches (though I couldn't say
where!).


For reference, here's a bit more of messages when the card works
under 2.6.10-rc1-mm2; I presume the "detected caps" is nothing to
bother about:

cardmgr[2470]: socket 1: Serial or Modem
kernel: ttyS3: detected caps 00000700 should be 00000100
kernel: ttyS3 at I/O 0x2e8 (irq = 3) is a 16C950/954



Regards,

kev

Re: [Bluez-devel] re: UART-based bluetooth stuff / serial_cs problems solved?

[Marcel Holtmann]

Hi Kevin,

> > > With linux-2.6.10-rc1-mm2:
> > > hciattach /dev/ttyS3 socket
> > > seems to complete ok (none of the "BCSP initialization timed out" 
> > 
> > Can you retest it with 2.6.10-rc1-bk13 and see if these patches are
> > already merged back mainline.
> 
> Ok, just tested this, and hciattach fails with "BCSP initialization
> timed out", as it does with earlier kernels - so the significant
> modifications must be in the mm2 patches (though I couldn't say
> where!).

too bad, but I think we are on the right way.

Russel, do you may know what patches from -mm are not merged back
mainline at the moment and Kevin can apply one by one to find out what
makes these cards working again?

Regards

Marcel




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