Re: DMA API issues

[Ian Molton]

On Fri, 18 Jun 2004 22:20:14 +0100
Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> wrote:

> > Yes, we do this on parisc too.  We actually have a hidden method
> > pointer(per platform) and cache the iommu (we have more than one)
> > accessors in platform_data.
> 
> Except that platform_data already has multiple other uses, especially
> for platform devices.

In the case of the SOC devices I described, its actually appropriate to
make the allocator system tied to the bus - as several devices end up
sharing the same 32K pool in the device. at the device level the
allocator would be useless in these cases.
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