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[Xen-devel] [RFC 0/2] Generic DT Support for SMMU
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Brian Woods <brian.woods@xxxxxxxxxx>
- Date: Thu, 9 Jan 2020 17:26:28 -0800
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- Cc: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Brian Woods <brian.woods@xxxxxxxxxx>
- Delivery-date: Fri, 10 Jan 2020 01:27:03 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
I'd like some feedback on these patches. Parts I particularly want
feedback on are listed below and each patch will have a copy of the
relevant parts requesting feedback. Any feedback is welcomed though.
Also, the commit messages are a little rough.
Patch 1:
- Check in device_tree.c. This is needed, otherwise it won't boot due
to dev_iommu_fwspec_get(dev) being true and returning EEXIST. I'm
not completely sure what type of check is best here.
Patch 2:
- Checks for the: arm_smmu_dt_add_device* and arm_smmu_dt_xlate*
functions.
These patches have been tested with device passthrough on a Xilinx
ZCU102 with passing the on board ethernet to a guest via the SMMU.
Brian Woods (2):
arm,smmu: add support for iommu_fwspec functions
smmu: add support for generic DT bindings
xen/drivers/passthrough/arm/smmu.c | 156 +++++++++++++++++++++++++---------
xen/drivers/passthrough/device_tree.c | 20 +----
2 files changed, 118 insertions(+), 58 deletions(-)
--
2.7.4
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