Re: Proposal for a new PCI function call

[Alan Cox]

> Hmmm, I was wondering if could come up with a pretty way to do this on
> 32 bit boxes that wants to enable highmem DMA. Right now
> pci_set_dma_mask() wants a dma_addr_t which means you have to do
> #ifdef CONFIG_HIGHMEM <blah> #else <bleh> #endif.
> 
> Introducing a new function that takes bit flags as arguments might be
> better?

pci_set_dma_mask_bits() ? So you could do

pci_set_dma_mask_bits(pdev, 64);

We want everything to go through pci_set_dma_mask... type functions either way
so that we can and the mask with upstream bridges when we hit address range 
limits in some peoples hardware

Alan