On Sep 27, 2012, at 8:14 AM, Davide Viti wrote:
> Hi Kumar,
>
>> ----Messaggio originale----
>> Da: ga...@kernel.crashing.org
>> Data:
> 27/09/2012 14.27
>> A: "Davide Viti"<zino...@tiscali.it>
>> Cc: <linuxppc-dev@lists.
> ozlabs.org>
>> Ogg: Re: PCI device not working
>>
> ...
>> Can you see what bus_no
> actually gets set to in the case we scan 0001:03 ?
>>
>> If its set to 03, can you
> try hack it to 1.
>
> is this what you mean?
It was, can you figure out in u-boot what exact config read on the bus would
return the correct thing.
The fact that when we probe the device at 0001:03 we should get back something
like cfg_data=0xabba1b65
- k
>
> ---
> a/arch/powerpc/sysdev/indirect_pci.c
> +++ b/arch/powerpc/sysdev/indirect_pci.c
>
>
> bus_no = (bus->number == hose->first_busno) ?
>
> hose->self_busno : bus->number;
>
> + if (bus_no == 3) {
> + printk
> ("*** force bus_no 3 -> 1 ***\n");
> + bus_no = 1;
> + }
> +
>
>
> I've
> tested a kernel with the above patch and this is what is printed on the log:
>
>
> pci_bus 0001:03: scanning bus
> -> ind_r_config - [/pcie@ffe0a000] devfn=0x0
> offset=0x0 len=0x4 hose->indirect_type=0x16 hose->first_busno=0x2 bus-
>> number=0x3
> *** force bus_no 3 -> 1 ***
> -> ind_r_config [/pcie@ffe0a000] -
> (bus_no=0x1 reg=0x0 cfg_data=0xff7eb004 len=0x4 hose->cfg_addr=0xff7eb000)
> val=0xffffffff PCIBIOS_SUCCESSFUL
>
> the entire log (132Kb) is available in [1]
> and [2]
>
> thanx for your help,
> Davide
>
> [1] http://pastebin.com/3mcbDzwY
> [2] http:
> //paste2.org/p/2274032
>
>
>
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