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SubjectRe: [PATCH 1/1] Fix PCI DMA flag propagation on SN (Altix) with PICs
On Fri, Feb 27, 2009 at 01:38:35AM -0800, Jeremy Higdon wrote:
> We recently discovered a problem with passing of DMA attributes on
> SN systems with the older PIC chips.

I think this should go in through the ia64 tree, not the PCI tree ...

> Signed-off-by: Jeremy Higdon <jeremy@sgi.com>
>
> --- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c 2009-02-25 23:29:21.000000000 -0800
> +++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c 2009-02-25 23:29:09.318611870 -0800
> @@ -135,11 +135,10 @@ pcibr_dmatrans_direct64(struct pcidev_in
> if (SN_DMA_ADDRTYPE(dma_flags) == SN_DMA_ADDR_PHYS)
> pci_addr = IS_PIC_SOFT(pcibus_info) ?
> PHYS_TO_DMA(paddr) :
> - PHYS_TO_TIODMA(paddr) | dma_attributes;
> + PHYS_TO_TIODMA(paddr);
> else
> - pci_addr = IS_PIC_SOFT(pcibus_info) ?
> - paddr :
> - paddr | dma_attributes;
> + pci_addr = paddr;
> + pci_addr |= dma_attributes;
>
> /* Handle Bus mode */
> if (IS_PCIX(pcibus_info))
> --
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--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."


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