[Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces.

From: Colin Ngam <cngam_at_sgi.com>
Date: 2003-05-16 11:59:59
Grant Grundler wrote:

> On Thu, May 15, 2003 at 06:32:31PM -0500, Colin Ngam wrote:
> > I do not understand what you are saying .. how would a consistent_dma_mask
> > attribute in the device struct helps pci_alloc_consistent() to return a dma
> > hanlde that can have the Upper 32 Bits Non 0's...
>
> Colin,
> davem has offered a counter proposal that makes way more sense
> that adding parameters to the dma_*() API. It won't change existing
> code or existing behaviors. And yes, Documentation/DMA_mapping.txt
> (API documentation) has to change to reflect that.
>
> Device Drivers SGI cares about will have to be modified to call
> pci_set_consistent_dma_mask() before calling pci_alloc_consistent().
>
> hth,
> grant

Hi Grant,

That would be very fine :-)

Thanks.

colin
Received on Thu May 15 19:23:19 2003

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