[Ksummit-2013-discuss] [ARM ATTEND] Describing complex, non-probable system topologies

[Will Deacon]

On Thu, Aug 01, 2013 at 11:26:30PM +0100, Bjorn Helgaas wrote:
> On Thu, Aug 1, 2013 at 12:35 PM, Will Deacon <will.deacon at arm.com> wrote:
> 
> > ... For example, interfacing
> > a PCIe device with an SMMU requires knowledge of both the requester id
> > associated with the device and how that maps to incoming stream ids
> > (based off the AXI bus id) on the SMMU.
> 
> Tangent: We're trying to hash out a way for IOMMU drivers to use a PCI
> interface to discover the requester IDs associated with a device.  We
> currently only have one users (intel-iommu.c), and it would be awesome
> to have another user to help make things generic.  Please chime in if
> you have opinions.
> 
> https://lkml.kernel.org/r/20130711210326.1701.56478.stgit@bling.home

Ooh, yes, thanks Bjorn. I'll find some time to take a look at that.

Cheers,

Will