[OpenBIOS] Back at it again( PCI Passthrough )

[Thomas Huth]

On 21.05.2018 22:31, Segher Boessenkool wrote:
> On Mon, May 21, 2018 at 09:20:12PM +0100, Mark Cave-Ayland wrote:
>> On 20/05/18 16:36, Jd Lyons via OpenBIOS wrote:
>>
>>> Thanks Mark,
>>>
>>> I just defined the other config words as colon definitions, but I’m 
>>> pretty sure now that isn’t working correctly.
>>>
>>> dev /pci
>>> : rl at -le  rl@ lbflip ;
>>> : >config  f1000000 + ;
>>> : config-l@  >config cr ." config-l@ " dup . rl at -le space dup . ;
>>> : rl!-le  >r lbflip r> rl! ;
>>> : rw!-le  >r wbflip r> rw! ;
>>> : rw at -le  rw@ wbflip ;
>>> : config-l!  >config rl!-le ;
>>> : config-w!  >config cr ." config-w! " 2dup . space . rw!-le ;
>>> : config-w@  >config cr ." config-w@ " dup . rw at -le space dup . ;
>>>
>>> I hate to be a bother, but when you find the time, if you could try and 
>>> implement the other config words, that would be great.
>>
>> Yes I will try my best, although I still have a backlog from the past 
>> few months to get on top of at the same time - any patches appreciated :)
>>
>> One thing I did notice on my travels though: 
>> https://git.qemu.org/?p=openbios.git;a=blob;f=forth/device/other.fs;h=b3900730113f1177258f67710c44186e2f742f52;hb=e0c272b13bb01888a5f419c82d60095aacc45d0e#l58
>>
>> Looks like the r* words are currently missing an implementation.
> 
> Note that rb@ etc. are bus-specific.  h# 230 get-token  and all that.

While we're at this topic: Note that there are also some bad fcode ROMs
around which use the non-register memory access functions for accessing
MMIO memory. SLOF has an ugly work-around included to get these working:

https://github.com/aik/SLOF/blob/master/slof/fs/fcode/1275.fs#L371

Note sure whether this is applicable for your PCI card, though.

 Thomas