[parisc-linux] Problem find devices on the E55 I/O interfaces

[Christoph Plattner]

So, the devices below may be the HP-PB bus, as you mentioned.
The resulting question: is this HP-PB bus now transperent ?
Why are the devices not found ?

The point confusing me, is that the PDC boot monitor can display the
hardware paths below the "56", but Linux calling PDC calls cannot see
those devices, independent, if the device type is really know or only
found as unknown.

What is the reason here.

So I thought the interpretion of the data structure is wrong for those
machines ....

Christoph


Matthew Wilcox wrote:
> 
> On Tue, Jul 02, 2002 at 03:25:01PM -0600, Grant Grundler wrote:
> > Christoph Plattner wrote:
> > > Here is one question: Although I a have hardware knowledge, I am
> > > not fix HP terminology here.
> > > Can you give me some hints here with the kewords "main bus",
> > > "lower bus", etc...
> >
> > "central bus" = bus which connects all CPUs with all Memory.
> > On N-class this would be the Merced Bus.
> > On C3000 it's the runway bus.
> > On 712 is the GSC bus.
> 
> E class is probably different somehow.  It has a PCX-L chip in it, so the
> only external bus from that chip is the GSC bus.  Look at the ioscan output
> >from the hwdb:
> 
> :pa:F:F:F:-1:-1:4294967295:bc:root:::0:root:root:CLAIMED:BUS_NEXUS::0
> pa:pa:F:F:F:-1:-1:4294967295:bc:bus_converter:56:80 48 0 71 0 0 12 0 0 0 0 0 0 0 0 0 :1:root.bc:bc:CLAIMED:BUS_NEXUS:Bus Converter:1
> pa:sio:F:F:F:-1:-1:4294967295:ext_bus:scsi3:56/40:0 64 128 132 0 0 59 128 6 0 0 0 43 6 0 2 :0:root.bc.scsi3:scsi3:CLAIMED:INTERFACE:HP 28696A - Wide SCSI ID=7:0
> pa:sio:F:F:F:-1:-1:4294967295:ext_bus:scsi1:56/52:4 64 128 132 0 0 57 128 4 0 0 0 21 136 0 3 :1:root.bc.scsi1:scsi1:CLAIMED:INTERFACE:HP 28655A - SE SCSI ID=7:1pa:sio:F:T:F:-1:76:131072:ext_bus:cent0:56/53:0 64 0 5 0 0 58 128 0 0 0 0 0 0 0 0 :2:root.bc.lpr2:lpr2:CLAIMED:INTERFACE:HP 28655A - Parallel Interface:2
> pa:sio:F:T:F:-1:193:0:tty:mux2:56/56:4 64 128 133 16 0 13 0 3 0 0 0 80 252 0 2 :0:root.bc.mux2:mux2:CLAIMED:INTERFACE:MUX:0
> pa:core:F:F:F:-1:-1:4294967295:ba:core_adapter:60:1 17 128 11 0 0 129 0 0 0 0 0 0 0 0 0 :0:root.bus_adapter:bus_adapter:CLAIMED:BUS_NEXUS:Core I/O Adapter:0
> core:wsio:F:T:F:-1:52:0:lan:lan2:60/6:1 17 128 138 0 0 138 0 2 0 0 0 219 151 0 2 :0:root.bus_adapter.lan2:lan2:CLAIMED:INTERFACE:Built-in LAN:0
> pa:pa:F:F:F:-1:-1:4294967295:processor:processor:62:72 49 0 0 0 0 4 129 0 0 0 0 0 0 0 0 :0:root.processor:processor:CLAIMED:PROCESSOR:Processor:0
> pa:pa:F:F:F:-1:-1:4294967295:memory:memory:63:2 80 31 1 0 0 9 0 0 0 0 0 0 0 0 0 :0:root.memory:memory:CLAIMED:MEMORY:Memory:0
> 
> (I trimmed out the SCSI devices.)
> 
> The device at iopath 60 is clearly Lasi.  The device at iopath 56 is
> _reported as_ Java BC GSC+ Port which is obviously wrong.  Ditto the E45
> (claims to have a Uturn-IOA BC GSC+ Port), E35 (U2-IOA BC GSC+ Port)
> and E25 (GeckoBOA BC GSC+ Port).  Anyone on this list know what device
> was _actually_ used in the E class machines?  And do they have docs
> for it?  ;-)
> 
> I expect that the bus below 56/ is actually an HP-PB bus because of the
> devies it claims to have on it.
> 
> --
> Revolutions do not require corporate support.
> 
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