Re: Pegasos interrupt mapping and dmamem_alloc

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Hello,

On Nov 3, 2007, at 11:46, Tim Rightnour wrote:

>> But then a new crash! The _dma_phys_to_bus_mem() function in the
>> pci_bus_dma_tag structure was not initialized! I don't know why  
>> you are
>> making a difference between pci_bus_dma_tag for macppc and for the  
>> rest?
>> Usng the macppc-version instead, which initializes the two missing  
>> function
>> pointers, fixes the problem:
>
> Because the macppc one isn't correct.  They are using thier own  
> internal
> versions of the routines, as opposed to the generic powerpc ones.   
> I keep
> forgetting to ask Macallan if they still need this hack or not. I  
> suspect they
> do not.

I'll have a look - I dimly remember trying to get rid of them but  
then deciding to leave them in place for the time being - not sure  
why though.

> It looks like macppc uses the generic ones, so we can probably just  
> set the
> PHYS_TO_BUS_MEM and BUS_MEM_TO_PHYS macros in ofppc/include/bus.h  
> to those
> two functions, and things will be good to go.

On macppc busaddr == physaddr for memory mapped PCI stuff at least.

>> But also a new problem: now attaching ofb0 freezes the system...  
>> *sigh*
>
> It's probably not worth fiddling with ofb.  I was talking to  
> Macallan, and he
> said macppc will be dumping that driver in favor of genfb.

ofb contains a bunch of macppc-specific hacks, I doubt its anywhere  
near portable.

have fun
Michael
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