Solving The Problem With Error 1394/sbp2

Solving The Problem With Error 1394/sbp2

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    Over the past few days, some readers have come across the well-known error message 1394/sbp2. This issue occurs for a number of reasons. Now we will discuss them.

    description Konstantin Antselovich 2005-11-12 14:26:28 UTC

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  • From Bugzilla Helper:User Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: 1.8) Gecko/20051118 Fedora/1.5-0.5.0.rc3 Firefox/1.5Description of the problem:*** The serial bus protocol module (SBP-2) cannot be connected to an external Memorex DVD-RW drive via IEEE1394 ***1. As soon as I connect the Firewire cable to the DVD-RW case, dmesg reports that it is registered on the IEEE1394 bus:---ieee1394: Added: Host ID: BUS[0-00:1023] GUID[00101005050164da]ieee1394: added host: ID:BUS[0-01:1023] GUID[00000e1000600940]---2. Then, after `modprobe sbp2', dmesg outputs:---SCSI subsystem $Rev: initializedsbp2: $1306 Ben Collins <[email protected]>ieee1394: sbp2 driver: forced I/O serialization (serialize_io=1)ieee1394: sbp2: try serialize_io=0 for better performance.scsi0: SCSI emulation for IEEE-1394 SBP-2 devices.---3. And after the marriage of seconds, dmegs logs the following:---ieee1394: sbp2: SBP-2 drive mount failed - connection timed outsbp2: 00101005050164da-0 probe ignored with error -16---Changing the capabilities of the spb2 module inaccording to http://www.linux1394.org/sbp2.php it helps and doesn't help. Guess I'll have to follow the progress on the IEEE1394 bus to find out more, but I don't know how.I hope to be able to use the player with Linux, so let me know if you need more information.Thanks! The best room Regards,KonstantinRelease version associated with the selected component (if applicable):2.6.14-1.1644_FC4How reproducible:alwaysSteps for final reproduction:1. Connect the IEEE1394 cable to the appropriate DVD burner.  Actual results: sbp2 module log results: errorThe expected sbp2 module should create a trusted SCSI device.Further information:====== Other important information ======Host: Fujitsu Pentium III 1.3 768 MB laptopUnit: c7651 Supplier: Memorex Model: DVD16+/-DL4RWlD2 Rev. : JWS6Controller IEEE1394: 1:0e. FireWire Three (IEEE 1394): Fujitsu Limited. : Unknown Device 2010 (Rev. 01) (prog-if ten [OHCI])       Subsystem: Fujitsu Limited. : Unknown device 112b        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=average >TAbort- SERR- drive itleft works when I select it via USB:---The USB mass storage device driver is initializing...scsi3: SCSI emulation for USB storage devices.USB stick found pending 5USB memory: to let the device decide before scanningusbcore: new registered car driver usb memorySupport registered USB storage.  Manufacturer: Memorex Model: DVD16+/-DL4RWlD2 Version: JWS6  Type: ANSI SCSI CD-ROM Version: 00USB Memory: Fully Display Devicesr0: disk scsi3-mmc: 48x/48x-writer-cd/rw-xa/form2-cdda-trayMounted on CD-ROM SCSI sr0 while scsi3, Channel 0, ID 0, Mon 0----

    comment 1 Konstantin Antselovich 01/10/2006 06:48:35 UTC
    === solved, + workaround available ===This is a code issue in the sbp2 kernel module. This completes the controlmy memory accessLimits for 2 unique IEee1394 OHCI controllers:A) Controller ALi M5253 Group P1394 OHCI 1.1B) Fujitsu Limited. : Unknown device 2010 (Rev. 01) (prog-if 10 [OHCI]) device112b (commonly used in Fujitsu C-series laptops)The next period will solve the problem, or someone can use the following workaround:1) Recompile the kernel with CONFIG_IEEE1394_SBP2_PHYS_DMA=y2) "modprobe ohci1394 phys_dma=0"For more information and discussion see all Linux1394 list archives:http://marc.theaimsgroup.com/?t=113639033500002&r=1&w=2====Fix====---drivers/ieee1394/ohci1394.c.orig 2005-10-27 17:02:08.000000000 -0700+++ driver/ieee1394/ohci1394.c 2006-01-07 23:15:04.637814380 [email protected]@ -2527.12 +2527.19 @@ if (phys_dma) { reg_write(ohci,OHCI1394_PhyReqFilterHiSet, 0xffffffff); reg_write(ohci,OHCI1394_PhyReqFilterLoSet, 0xffffffff);-reg_write(ohci,OHCI1394_PhyUpperBound, 0xffff0000);+ /* reg_write(ohci,OHCI1394_PhyUpperBound, 0xffff0000);+ * Connected to Stefan Richter as suggested

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