Hi Jayachandran,
On Mon, Apr 03, 2017 at 01:15:04PM +, Jayachandran C wrote:
> The Cavium ThunderX2 arm64 SoCs (called Broadcom Vulcan earlier), the PCI
> topology is slightly unusual. For a multi-node system, it looks like:
>
> [node level PCI bridges - one per node]
> [SoC PCI devices w
On Mon, Apr 10, 2017 at 07:39:24PM +0100, Jean-Philippe Brucker wrote:
> On 07/04/17 22:19, Michael S. Tsirkin wrote:
> > On Fri, Apr 07, 2017 at 08:17:44PM +0100, Jean-Philippe Brucker wrote:
> >> There are a number of advantages in a paravirtualized IOMMU over a full
> >> emulation. It is portabl
On 07/04/17 22:19, Michael S. Tsirkin wrote:
> On Fri, Apr 07, 2017 at 08:17:44PM +0100, Jean-Philippe Brucker wrote:
>> There are a number of advantages in a paravirtualized IOMMU over a full
>> emulation. It is portable and could be reused on different architectures.
>> It is easier to implement
On 08/04/17 00:13, Frank Rowand wrote:
> On 04/07/17 07:46, Robin Murphy wrote:
>> On 06/04/17 20:34, Frank Rowand wrote:
>>> On 04/06/17 04:01, Sricharan R wrote:
Hi Frank,
On 4/6/2017 12:31 PM, Frank Rowand wrote:
> On 04/04/17 03:18, Sricharan R wrote:
>> Size of the dma-r
On 04/10/17 04:20, Sricharan R wrote:
> This series calls the dma ops configuration for the devices
> at a generic place so that it works for all busses.
> The dma_configure_ops for a device is now called during
> the device_attach callback just before the probe of the
> bus/driver is called. Simil
[Moving Bjorn back to to: ]
On Tue, Apr 04, 2017 at 03:28:26PM +0100, Robin Murphy wrote:
> On 04/04/17 12:50, Jayachandran C wrote:
> > On Mon, Apr 03, 2017 at 04:07:53PM +0100, Robin Murphy wrote:
> >> On 03/04/17 14:15, Jayachandran C wrote:
> >>> The Cavium ThunderX2 arm64 SoCs (called Broadco
Configuring DMA ops at probe time will allow deferring device probe when
the IOMMU isn't available yet. The dma_configure for the device is
now called from the generic device_attach callback just before the
bus/driver probe is called. This way, configuring the DMA ops for the
device would be called
From: Lorenzo Pieralisi
The IOMMU probe deferral implementation requires a mechanism to detect
if drivers for SMMU components are built-in in the kernel to detect
whether IOMMU configuration for a given device should be deferred (ie
SMMU drivers present but still not probed) or not (drivers not p
This is an equivalent to the DT's handling of the iommu master's probe
with deferred probing when the corrsponding iommu is not probed yet.
The lack of a registered IOMMU can be caused by the lack of a driver for
the IOMMU, the IOMMU device probe not having been performed yet, having
been deferred,
From: Robin Murphy
Now that the appropriate ordering is enforced via probe-deferral of
masters in core code, rip it all out and bask in the simplicity.
Tested-by: Hanjun Guo
Acked-by: Will Deacon
Signed-off-by: Robin Murphy
[Sricharan: Rebased on top of ACPI IORT SMMU series]
Signed-off-by: S
From: Lorenzo Pieralisi
The IORT linker section introduced by commit 34ceea275f62
("ACPI/IORT: Introduce linker section for IORT entries probing")
was needed to make sure SMMU drivers are registered (and therefore
probed) in the kernel before devices using the SMMU have a chance
to probe in turn.
Size of the dma-range is calculated as coherent_dma_mask + 1
and passed to arch_setup_dma_ops further. It overflows when
the coherent_dma_mask is set for full 64 bits 0x,
resulting in size getting passed as 0 wrongly. Fix this by
passsing in max(mask, mask + 1). Note that in this ca
From: Laurent Pinchart
Failures to look up an IOMMU when parsing the DT iommus property need to
be handled separately from the .of_xlate() failures to support deferred
probing.
The lack of a registered IOMMU can be caused by the lack of a driver for
the IOMMU, the IOMMU device probe not having b
With arch_setup_dma_ops now being called late during device's probe after
the device's iommu is probed, the notifier trick required to handle the
early setup of dma_ops before the iommu group gets created is not
required. So removing the notifier's here.
Tested-by: Marek Szyprowski
Tested-by: Han
This series calls the dma ops configuration for the devices
at a generic place so that it works for all busses.
The dma_configure_ops for a device is now called during
the device_attach callback just before the probe of the
bus/driver is called. Similarly dma_deconfigure is called during
device/dri
From: Robin Murphy
IOMMU configuration represents unchanging properties of the hardware,
and as such should only need happen once in a device's lifetime, but
the necessary interaction with the IOMMU device and driver complicates
exactly when that point should be.
Since the only reasonable tool a
From: Laurent Pinchart
As part of moving DMA initializing to probe time the
of_dma_deconfigure() function will need to be called from different
source files. Make it public and move it to drivers/of/device.c where
the of_dma_configure() function is.
Tested-by: Marek Szyprowski
Reviewed-by: Robi
From: Robin Murphy
In preparation for some upcoming cleverness, rework the control flow in
of_iommu_configure() to minimise duplication and improve the propogation
of errors. It's also as good a time as any to switch over from the
now-just-a-compatibility-wrapper of_iommu_get_ops() to using the g
On 27/03/17 13:18, Robin Murphy wrote:
> Hi Jean-Philippe,
>
> On 27/02/17 19:54, Jean-Philippe Brucker wrote:
>> Reintroduce smmu_group. This structure was removed during the generic DT
>> bindings rework, but will be needed when implementing PCIe ATS, to lookup
>> devices attached to a given dom
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