About DMA mem and IO Server

Martin Schröder martin.schroeder at openlimit.com
Fri May 23 16:59:49 CEST 2014


This warning does not hurt anyway, but does anybody know what this 
warning is about and how to avoide it?


    Martin


Am 12.05.2014 11:51, schrieb Martin Schröder:
> I don't know the reason. But I also get the same WARNING (also twice)
> for each DMAMEM on my board - of course the beginning-end addresses differ.
>
>> May this problem be the reason why network is unreachable  ?
>>
>> ========================
>> ..(omitted)..
>>
>> IO      | Io service
>> IO      | Verboseness level: 4
>> IO      | unused physical memory space:
>> IO      |   [00000001000000-0000000fffffff]
>> IO      |   [00000050000000-000000ffffffff]
>> IO      | Loading: config 'rom/imx6q.io'
>> *IO      | WARNING: phys mmio resource allocation failed**
>> **IO      | <0x1bf18>IOMEM [00000010426000-000000104a5fff 80000]
>> non-pref (32bit) (align=7ffff flags=c002)**
>> **IO      | WARNING: phys mmio resource allocation failed**
>> **IO      | <0x1bf18>IOMEM [00000010426000-000000104a5fff 80000]
>> non-pref (32bit) (align=7ffff flags=c002)*
>> IO      | P6Device: l4linux ""
>> IO      |   P6Device: (noname) "L40009"
>> IO      |   P6Device: imx6q-fec.dev0 "imx6q-fec.0"
>> IO      | <0x14678>    IOMEM   [00000002188000-0000000218bfff 4000]
>> non-pref (32bit) (align=3fff flags=4002)
>> IO      | <0x1be28>    IRQ     [00000000000096-00000000000096 1] none
>> (32bit) (align=0 flags=4001)
>> IO      |   P6Device: dmamem "dmamem"
>> IO      | <0x1bf18>    IOMEM   [00000010426000-000000104a5fff 80000]
>> non-pref (32bit) (align=7ffff flags=c002)
>>
>> ..(omitted)..
>> ========================
>>




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