Carsten Neumann wrote:
> On Fri, 08 Feb 2002, Joerg Schilling wrote:
>
>>>From: Giuseppe Corbelli <[EMAIL PROTECTED]>
>>>
>>>>I try to setup a Rico MP9060A DVD/CD-RW drives via an external ieee1394
>>>>connection. I have a 2.4.10 Kernel(Suse 7.3 distribution). When i load the
>>>>kernelmodules for iee1394(ieee1394,ohci1394,sbp2) everything seems to be ok.
>>>>I can mount CD's. The CD-Combo is detected as SCSI Drive 1.
>>>>But when i start cdrecord(cdrecord -scanbus) the system hangs? According to the
>attached part
>>>>of the /var/log/messages there is a problem with the paride/pg kernel module?
>>>>
>>>>
>>>>Can somebody help me or had some similiar experience and found a way out?
>>>>
>>>...
>>>
>>>>Feb 5 22:14:47 pc modprobe: modprobe: Can't locate module paride_protocol
>>>>
>>>...
>>>I have no direct experience but this line seems to suggest you need the
>>>right low level module, as found in
>>>Block Devices->Parallel Ide Protocol Modules
>>>
>>If you really have IEEE1394 problems, write to a 1394 related Linux group.
>>
>>
>>If you have problems with PP kernel error messages that should be suppressed by
>>the Linux kernel write to Linux PAride.
>>
>>J�rg
>>
>
>
> Is the FireWire interface indeed handled via the paride module?
It is probably safe to assume that a cd reader or writer on
an ieee1394 bus is using the "sbp2" protocol which is effectively
the SCSI command set over 1394. [Actually sbp-2 is a SCSI standard,
see www.t10.org ]
From a Linux perspective this means various ieee1394 modules
should be loaded, including sbp2. The sbp2 driver appears to
the linux scsi subsystem as a lower level (pseudo) driver. Hence
the writer is listed when you do "cat /proc/scsi/scsi". Cdrecord
should then be able to access it (via the sg or sr drivers) just
like any other scsi device. Note that this is similar to the
way ATAPI (via the ide-scsi driver) and USB (via usb-storage)
cd writers are accessed by cdrecord.
Note than none of this has anything to do with the linux
pg driver which is a pass through style driver (in that
sense like sg) for the parallel port subsystem ("parport").
In the past, I have exchanged emails with Joerg on
the subject of the cdrecord scanning logic getting confused
by some scsi devices which resulted in the pg interface
being scanned. From memory that problem was addressed long
ago.
Hope this helps [and meets Carsten's literary standards :-)].
Doug Gilbert
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