The number of S2CR registers is not properly set when stream
matching is not supported. Fix this and add check that we do not try to
access outside of the number of S2CR regisrers.
Signed-off-by: Olav Haugan
---
drivers/iommu/arm-smmu.c | 28
1 file changed, 20 inser
On 8/22/2014 8:22 AM, Will Deacon wrote:
> Hi Olav,
>
> Some really minor comments, but this looks good.
>
> On Tue, Aug 19, 2014 at 12:17:38AM +0100, Olav Haugan wrote:
>> The number of S2CR registers is not properly set when stream
>> matching is not supported. Fix this and add check that we do
Hi Varun,
On Tue, Aug 19, 2014 at 01:11:43PM +0100, Varun Sethi wrote:
> > I think there's some confusion here. The ARM architected SMMU does not
> > perform any StreamID translation -- it sees an incoming ID and uses that to
> > lookup a set of translation tables.
>
> I don't completely agree w
Hi Olav,
Some really minor comments, but this looks good.
On Tue, Aug 19, 2014 at 12:17:38AM +0100, Olav Haugan wrote:
> The number of S2CR registers is not properly set when stream
> matching is not supported. Fix this and add check that we do not try to
> access outside of the number of S2CR re
Hide functionality related to discovering Linux platform device resources
in separate callback functions. This will allow us to implement AMBA support
while reusing a lot of the code.
Signed-off-by: Antonios Motakis
---
drivers/vfio/platform/vfio_platform.c | 28 +++--
Having decoupled a portion of the VFIO_PLATFORM code from platform bus
specific resource discovery code, we can now move that code separate file.
This will allow us to implement discovering AMBA devices and their resources,
but reuse the a large part of the VFIO_PLATFORM implementation.
Signed-off
Enable building the VFIO AMBA driver. VFIO_AMBA depends on VFIO_PLATFORM,
since it is sharing a portion of the code, and it is essentially implemented
as a platform device whose resources are discovered via AMBA specific APIs
in the kernel.
Signed-off-by: Antonios Motakis
---
drivers/vfio/platfo
Add support for discovering AMBA devices with VFIO and handle them
similarly to Linux platform devices.
Signed-off-by: Antonios Motakis
---
drivers/vfio/platform/vfio_amba.c | 129 ++
1 file changed, 129 insertions(+)
create mode 100644 drivers/vfio/platform/
As already demonstrated with PCI [1] and the platform bus [2], a
driver_override property in sysfs can be used to bypass the id matching
of a device to a AMBA driver. This can be used by VFIO to bind to any AMBA
device requested by the user.
[1]
http://lists-archives.com/linux-kernel/28030441-pci
This patch series depends on the VFIO for PLATFORM devices patch series,
and implements AMBA device support for VFIO.
This can be used for example with the PL330 DMA Controller, which is an
AMBA device and not a proper platform device. By using the VFIO AMBA driver
introduced here, one can bind VF
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