[Xen-devel] [PATCH v2 0/2] ARM: ACPI: IORT: Hide SMMU from hardware domain's IORT table

[mjaggi@xxxxxxxxxxxxxxxxxx]

From: Manish Jaggi <mjaggi@xxxxxxxxxx>

The set is divided into two patches. First one calculates the size of IORT
while second one writes the IORT table itself.

patch1: estimates size of hardware domain IORT table by parsing all
the pcirc nodes and their idmaps, and thereby calculating size by
removing smmu nodes.

Hardware domain IORT table will have only ITS and PCIRC nodes, and PCIRC
nodes' idmap will have output refrences to ITS group nodes.

patch 2: The steps are:
a. First ITS group nodes are written and their offsets are saved
along with the respective offsets from the firmware table.
This is required when smmu node is hidden and smmu node still points
to the old output_reference.

b. PCIRC idmap is parsed and a list of idmaps is created which will
have PCIRC idmap -> ITS group nodes.
Each idmap is written by resolving ITS offset from the map saved in
previous step.

Changes wrt v1:
No assumption is made wrt format of IORT / hw support

Manish Jaggi (2):
  ARM: ACPI: IORT: Estimate the size of hardware domain IORT table
  ARM: ACPI: IORT: Write Hardware domain's IORT table

 xen/arch/arm/acpi/Makefile  |   1 +
 xen/arch/arm/acpi/iort.c    | 414 ++++++++++++++++++++++++++++++++++++++++++++
 xen/arch/arm/domain_build.c |  49 +++++-
 xen/include/asm-arm/acpi.h  |   1 +
 xen/include/asm-arm/iort.h  |  17 ++
 5 files changed, 481 insertions(+), 1 deletion(-)
 create mode 100644 xen/arch/arm/acpi/iort.c
 create mode 100644 xen/include/asm-arm/iort.h

-- 
2.7.4


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