linux1394 and f8

Hans de Goede j.w.r.degoede at hhs.nl
Wed Oct 31 14:45:51 UTC 2007


Will Woods wrote:
> On Wed, 2007-10-31 at 13:46 +0000, Peter Robinson wrote:
>>> I am running 7.92, and I see that the new firewire stack is in place.
>>> There is a page at the linux1394 wiki that suggests that kernel
>>> packagers build the old stack into the kernel for the time being:
>>>
>>> http://wiki.linux1394.org/JujuMigration
>>>
>>> Any chance of this happenign for Fedora 8?
> 
> Short answer: No. We've been using the Juju stack since F7 and we're not
> moving back, 'cuz Cutting Edge is what we're all about. But see below. 
> 
>> Right below where it says the best advise is to use the old drivers it
>> also says :
>>
>> Building the new drivers is only for advanced users (who for example
>> want the better speed of firewire-sbp2 relative to sbp2, on the
>> hardware on which the new drivers already work) - and for distributors
>> who know what is required in userspace to make use of the new drivers
>> (i.e. a patched libraw1394, a libdc1394 prerelease, adapted scripts
>> and config files etc.).
>>
>> I suspect "distributors who know what is required in userspace" covers
>> Fedora and hence the required patches are probably all there.
> 
> Right. Kristian Høgsberg is the primary author of the Juju stack - he's
> a Red Hat employee and Fedora contributor. He got all the Juju bits into
> F7 - the "new firewire stack" has been in place since then.
> 
> So nothing's really new for firewire in F8. The only noticeable changes
> since F7 are some bugfixes, and some changes relating to dvgrab,
> libraw1394 and isochronous devices (basically cameras and other
> audio/video devices). 
> 
> Iso devices should work everywhere *except* machines with OHCI 1.0
> controllers. Otherwise you get this message in dmesg:
> 
> firewire_ohci: Added fw-ohci device 0000:03:03.0, OHCI version 1.0
> firewire_ohci:     Isochronous I/O is not yet implemented for OHCI 1.0
> chips.
> firewire_ohci:     Cameras, audio devices etc. won't work on this
> controller with this driver version.
> 
> Unfortunately, these turn out to be more common than previously thought.
> But people are actively working on this problem - see this bug:
> https://bugzilla.redhat.com/show_bug.cgi?id=Juju_OHCI_1.0
> 
> It's possible this will be fixed in an F8 update. It's quite likely to
> be fixed for Fedora 9. If that's not soon enough, I'm told there's some
> third-party repositories out there that package up the older stack.
> 

Correct, most notably planet ccrma (AFAIK)

Regards,

Hans





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