On 2016/6/21 22:27, Lorenzo Pieralisi wrote:
Hi Hanjun,
On Tue, Jun 21, 2016 at 06:37:17PM +0800, Hanjun Guo wrote:
Hi Lorenzo,
On 2016/6/7 21:30, Lorenzo Pieralisi wrote:
This RFC patch series is v2 of a previous posting:
https://lkml.org/lkml/2016/4/14/702
v1 -> v2:
- Rebased on top of dependencies series [1][2][3](v4.7-rc1)
- Removed IOMMU fwnode generalization
- Implemented ARM SMMU v3 ACPI probing instead of ARM SMMU v2
owing to patch series dependencies [1]
- Moved platform device creation logic to IORT code to
generalize its usage for ARM SMMU v1-v2-v3 components
- Removed reliance on ACPI early device probing
- Created IORT specific iommu_xlate() translation hook leaving
OF code unchanged according to v1 reviews
The ACPI IORT table provides information that allows instantiating
ARM SMMU devices and carrying out id mappings between components on
ARM based systems (devices, IOMMUs, interrupt controllers).
http://infocenter.arm.com/help/topic/com.arm.doc.den0049b/DEN0049B_IO_Remapping_Table.pdf
Building on basic IORT support, available through [2]:
this patchset enables ARM SMMU v3 support on ACPI systems.
I'm trying to test your patches on D03 (SMMUv3 based) but ...
What do you mean by "I am trying.." :), have you actually tested
this series ?
I was rebasing this series on top of Tomasz's latest ITS patchset,
and found that patch 1~2,5 are not needed, and also have conflicts
(expected), so I think it's better to wait for the updated version
from you :)
[...]
[1] R.Murphy "Generic DT bindings for PCI and ARM SMMU v3"
http://marc.info/?l=linux-arm-kernel&m=146497432413816&w=2
...This patch set is still in discussion and seems not work
for non-PCI devices.
Can you be more specific please ? Yes, both series are work
in progress.
[2] T.Nowicki "Introduce ACPI world to ITS irqchip" v5
http://marc.info/?l=linux-acpi&m=146469369703684&w=2
Tomasz sent out the v7 and included patches in your series.
I think a updated version before the test makes sense, what
do you think? Let me know your thoughts.
I am working with Robin so that the xlate() mechanism works
properly and seamlessly for both DT and ACPI, given the
dependencies I think it makes more sense to wait for Tomasz
and Robin patches to get merged or at least stabilize before
doing anything else, I am curently working on a v3.
OK.
Thanks
Hanjun
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
