wifi: assignment of PCI device failed

[Johannes Kliemann]

Hi Alex,

thanks to your hint with Issue #2207 I was able to get the value of res
which is 9. What I find interesting is the fact that it now seems to be
able to assign the PCI device as you can see in [1].

> [platform_drv] wifi_drv -> : assignment of PCI device 4:0.0 succeeded

Yet everything else seems to behave as before. The timeout errors still
appear and there doesn't seem to be any actual connection attempt.

I have built this from [2] which currently incorporates log_core_kernel,
NOVA VGA support and benders fix free memory calculation (if this
information is useful to you).

Regards,
Johannes

[1]: https://imgur.com/a/osaVJ
[2]:
https://github.com/jklmnn/genode/tree/8a64415f52df2dee30e8fcd279e16d1b18eb2fb9

Am 04.12.2017 um 22:14 schrieb Alexander Boettcher:
> Hello,
> 
> On 04.12.2017 10:04, Johannes Kliemann wrote:
>> Hi all,
>>
>> I tried to use the Wifi driver for Intel wifi chips.
>> When running the driver I get the following messages:
>>
>>> [platform_drv] Error: wifi_drv -> : assignment of PCI device 4:0.0
>> failed phys=0xf8400000 virt=0x10
>> and
>>
>>> [wifi_drv] [iwl_trans_pcie_grap_nic_access] *WARN* Timeout waiting for
>> hardware access (CSR_GP_CNTRL 0xffffffff)
>>
>> The corresponding run file [1] is explicitly written without any default
>> routes. I can only provide a photo of the log output [2] (at least the
>> visible part) as I don't have any other debug method yet on this hardware.
>>
>> I thought that this was a missing route but I couldn't find a related
>> message and assigning default routes didn't fix it.
>> The error seems to appear in
>> repos/base-nova/src/core/pd_session_support.cc:assign_pci returning
>> false but I couldn't find out why this happens.
>> Does anyone have an idea?
> 
> What is or maybe are the value(s) for the variable 'res' in
> repos/base-nova/src/core/pd_session_support.cc:assign_pci ?
>