firewire debug help needed on iMac G3

Hello,

I'm facing a problem with the firewire support with -CURRENT on an iMac 
G3 (powerpc).

Since svn r187993 I can not boot with built-in firewire support. I run 
into an endless loop.

I doubt that firewire did work with the revision before 187993 on this 
iMac, but at least I could boot.

I also know that firewire support on a G4 PowerBook works ;)

I isolated the endless loop to be able to have a look at the boot messages.

The modification I had to do is in firewire.c:

@@ -1726,7 +1726,7 @@
  	dfwdev.maxrec = 8; /* 512 */
  	dfwdev.status = FWDEVINIT;

-	for (node = 0; node <= fc->max_node; node ++) {
+	for (node = 0; node <= /*fc->max_node*/ 5; node ++) {
  		/* We don't probe myself and linkdown nodes */
  		if (node == fc->nodeid) {
  			if (firewire_debug)

(fc->max_node is -1, confusing me anyway, node is int and max_node is 
unsigned int......)

Now with the above modification I get these messages below while 
kldload'ing the firewire module. Note to Sean, your latest patch (for 
sparc64) is included here.

I think there is something wrong going on. But I do not know where to 
start debugging. These lines are different, missing, on a sparc64 kldload:

  kernel: splitted payload
  kernel: resCount=4080 plen=20 len=-4
  kernel: fwohci0: AR DMA status=8409,  skip buffer done

What are the places, numbers to take care of?

The interface is working fine when running under OS-X.

Any hints?

Thanks in advance,
Andreas



kernel: fwohci0: <1394 Open Host Controller Interface> mem
  0xf5000000-0xf5000fff irq 40 at device 14.0 on pci2
  kernel: fwohci0: latency timer 16 -> 32.
  kernel: fwohci0: cache size 0 -> 8.
  kernel: fwohci0: [ITHREAD]
  kernel: fwohci0: OHCI version 1.0 (ROM=0)
  kernel: fwohci0: No. of Isochronous channels is 4.
  kernel: fwohci0: EUI64 00:30:65:ff:fe:aa:7c:d0
  kernel: fwohci0: resetting OHCI...done (loop=0)
  kernel: fwohci0: fwphy_rddata:: 0x2, retry=6
  kernel: fwohci0: fwphy_rddata:: 0x3, retry=6
  kernel: fwohci0: Phy 1394a available S400, 2 ports.
  kernel: fwohci0: fwphy_rddata:: 0x5, retry=6
  kernel: fwohci0: Enable 1394a Enhancements
  kernel: fwohci0: fwphy_rddata:: 0x5, retry=6
  kernel: fwohci0: fwphy_rddata:: 0x2, retry=6
  kernel: fwohci0: fwphy_rddata:: 0x4, retry=6
  last message repeated 2 times
  kernel: fwohci0: Link S400, max_rec 2048 bytes.
  kernel: fwohci0: BUS_OPT 0xa002 -> 0xf800a002
  kernel: fwohci0: fwohci_set_intr: 1
  kernel: firewire0: <IEEE1394(FireWire) bus> on fwohci0
  kernel: fwohci0: Initiate bus reset
  kernel: fwohci0: fwphy_rddata:: 0x1, retry=6
  kernel: fwohci0: fwphy_rddata:: 0x1, retry=6
  kernel: fwohci0: fwohci_intr_core: BUS reset
  kernel: fwohci0: fwohci_intr_core: node_id=0x00000001, SelfID Count=1, 
CYCLEMASTER mode
  kernel: splitted payload
  kernel: resCount=4080 plen=20 len=-4
  kernel: fwohci0: AR DMA status=8409,  skip buffer done
  kernel: firewire0: 2 nodes, maxhop <= 1 Not IRM capable irm(-1)
  kernel: fwohci0: fwohci_intr_core: BUS reset
  kernel: firewire0: fw_bus_probe:iterate and invalidate all nodes
  kernel: firewire0: fw_explore:node(0) fc->max_node(-1) found
  kernel: firewire0: fw_explore: node0: link down
  kernel: firewire0: fw_explore:found myself node(1) fc->nodeid(1) 
fc->max_node(-1)
  kernel: firewire0: fw_explore:node(2) fc->max_node(-1) found
  kernel: firewire0: fw_explore: node2: link down
  kernel: firewire0: fw_explore:node(3) fc->max_node(-1) found
  kernel: firewire0: fw_explore: node3: link down
  kernel: firewire0: fw_explore:node(4) fc->max_node(-1) found
  kernel: firewire0: fw_explore: node4: link down
  kernel: firewire0: fw_explore:node(5) fc->max_node(-1) found
  kernel: firewire0: fw_explore: node5: link down
  kernel: bus_explore done

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