2.4.26 does not initialize via host adapter

Hi,

kernel 2.4.26 broke for me ieee1394 in that it fails to initialize
(detect?) the host adapter. The same machine with the same configuration
had no problems with that for kernel versions 2.4.20 - 2.4.25.

The machine is a HP Omnibook XT1000 with VIA chipset. The kernels are
plain vanilla from kernel.org.

/proc/pci tells me (both 2.4.25 and 2.4.26):

     FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 70).
       IRQ 9.
       Master Capable. Latency=64. Max Lat=32.
       Non-prefetchable 32 bit memory at 0xf0000800 [0xf0000fff].
       I/O at 0xe300 [0xe37f].

When booting, 2.4.25 logs with respect to ieee1394:

Apr 25 20:42:38 c3po kernel: ohci1394: $Rev: 1045 $ Ben Collins
<bcollins@debian.org>
Apr 25 20:42:38 c3po kernel: PCI: Setting latency timer of device
00:0e.0 to 64
Apr 25 20:42:38 c3po kernel: ohci1394_0: OHCI-1394 1.0 (PCI): IRQ=[9]
MMIO=[f0000800-f0000fff] Max Packet=[2048]
Apr 25 20:42:38 c3po kernel: ieee1394: Host added: ID:BUS[0-00:1023]
GUID[00023f280b0005d7]
Apr 25 20:42:38 c3po kernel: raw1394: /dev/raw1394 device initialized

The messages of 2.4.26 are:

Apr 25 20:46:54 c3po kernel: ohci1394: $Rev: 1045 $ Ben Collins
<bcollins@debian.org>
Apr 25 20:46:54 c3po kernel: PCI: Found IRQ 9 for device 00:0e.0
Apr 25 20:46:54 c3po kernel: PCI: Sharing IRQ 9 with 00:11.5
Apr 25 20:46:54 c3po kernel: PCI: Setting latency timer of device
00:0e.0 to 64
Apr 25 20:46:54 c3po kernel: ohci1394_0: OHCI-1394 1.0 (PCI): IRQ=[9]
MMIO=[f0000800-f0000fff] Max Packet=[2048]
Apr 25 20:46:54 c3po kernel: raw1394: /dev/raw1394 device initialized

So the "Host added" message line is missing with 2.4.26.

2.4.25 tells me in /proc/bus/ieee1394/devices:

Node[0-00:1023] GUID[00023f280b0005d7]:
   Vendor ID: `Linux OHCI-1394' [0x004063]
   Capabilities: 0x0083c0
   Bus Options:
     IRMC(1) CMC(1) ISC(1) BMC(0) PMC(0) GEN(0)
     LSPD(2) MAX_REC(2048) CYC_CLK_ACC(0)
   Host Node Status:
     Host Driver : ohci1394
     Nodes connected : 1
     Nodes active : 1
     SelfIDs received: 1
     Irm ID : [0-00:1023]
     BusMgr ID : [0-63:1023]
     In Bus Reset : no
     Root : yes
     Cycle Master : yes
     IRM : yes
     Bus Manager : no

For 2.4.26 this pseudo-file is empty.

I investigated a little bit the "Sharing IRQ 9" message that 2.4.26
logs. Turns out that both, the ieee1394 host controller and the AC97
audio controller use IRQ 9. That however, hasn't changed between 2.4.25
and 2.4.26.

My kernel-configuration is also unchanged (and has in fact been
generated for 2.4.26 by 'make oldconfig' from the configuration of
2.5.25). It reads with respect to ieee1394:

#
# IEEE 1394 (FireWire) support (EXPERIMENTAL)
#
CONFIG_IEEE1394=m
CONFIG_IEEE1394_OHCI1394=m
CONFIG_IEEE1394_VIDEO1394=m
CONFIG_IEEE1394_SBP2=m
# CONFIG_IEEE1394_SBP2_PHYS_DMA is not set
CONFIG_IEEE1394_ETH1394=m
CONFIG_IEEE1394_DV1394=m
CONFIG_IEEE1394_RAWIO=m
CONFIG_IEEE1394_CMP=m
CONFIG_IEEE1394_AMDTP=m
# CONFIG_IEEE1394_VERBOSEDEBUG is not set
# CONFIG_IEEE1394_OUI_DB is not set

Is this a known problem of 2.4.26? Does anyone have a clue what goes
wrong with 2.4.26 or what I could try in order to narrow down the
problem? Any help or suggestions are appreciated.

Cheers,
Bernd

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Received on Sun Apr 25 21:58:51 2004