My system consists of a pair of 460EXs attached by way of both PCI-E and
PCI. Ultimately my goal is to communicate between them via pci-e (is
there anything out there that does this already?). For a small step, I
am trying to get the PCI to work. I already have the PCI boot ability
of the 460EXs working so the "adapter" processor is booting from the
masters main memory. Right now I am trying to just exchange data via
the regular PCI bus. I've looked through the kernel code and see where
it is using the "dma-ranges" from the device tree to setup the PIM
registers. So I am good there. When I look at the PCI bus from the
host though, I see the following output from lspci.
0001:00:02.0 Class 0680: Unknown device 10e8:a003
Subsystem: Unknown device 1014:cafe
Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 22
Memory at d80000000 (64-bit, prefetchable) [disabled]
[size=80000000]
Capabilities: [c0] Message Signalled Interrupts: Mask- 64bit+
Queue=0/2 Enable-
Capabilities: [d0] Power Management version 2
Capabilities: [dc] PCI-X non-bridge device
Capabilities: [48] Vital Product Data
I am assuming that the disabled is probably because the pci command
register on the adapter is not correct. However I am not entirely sure.
And I assume that the disabled means I won't be able to write to it. So
what do I need to do to get this enabled?
Thanks
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