[OpenBIOS] [PATCH] drivers/pci: Recognise RTL8139 network card and enable bus mastering

[Alexander Graf]

On 26.06.14 00:25, BALATON Zoltan wrote:
> On Wed, 25 Jun 2014, Alexander Graf wrote:
>> On 03.06.14 01:34, BALATON Zoltan wrote:
>>> Apart from the older NE2000 card also recognise RTL8139 and set bus
>>> master bit for it. This makes it work in MorphOS which uses it in a
>>> different (DMA) mode than the Linux driver.
>>>
>>> Signed-off-by: BALATON Zoltan <balaton at eik.bme.hu>
>>
>> Please create a helper that tells you whether it's safe to enable bus 
>> mastering (why doesn't MorphOS do this itself?) on a particular harware
>
> On why MorphOS does not do it: good question. I guess it expects that 
> Open Firmware which supports booting from the network initialises the 
> card so it does not have to do the PCI config itself. But I don't know 
> just gussing. On QEMU it only works with this patch, otherwise DMA 
> from the card fails.

Yeah, that makes it an OS specific quirk hack :). I'm ok with those, but 
we should make sure we have comments explaining what we're dealing with 
here. In a few years from now nobody will find these email threads anymore.


Alex