Re: [Linux-ia64] Re: PCI DAC routines for SN

From: Grant Grundler <grundler_at_cup.hp.com>
Date: 2002-04-23 11:34:00
Jesse Barnes wrote:
> Except that pci_alloc_consistent is supposed to return a 32 bit
> address...

And why is that a problem?
Doesn't (or couldn't) swiotlb allocate memory from a "DMA ZONE"?
(I've only worked on real IOMMU support for parisc-linux)

or do you have a driver/system config that might exhaust available
32-bit address space?

BTW, I agree the DAC support and SAC for pci_alloc_consistent()
is, uhm, not very clear.

thanks,
grant
Received on Wed Apr 24 10:45:44 2002

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