[Xen-devel] [RFC 0/6] IORT support and introduce fwspec

[Sameer Goel <sgoel@xxxxxxxxxxxxxx>]

This changelist is in preparation for porting the latest SMMUv3 driver from
Linux kernel  4.11 release.

Scope of the changes:
- Introduce the iommu_fwspec implementation
    * This implementation is a direct port from Linux. The code that is not
      needed for Xen is removed.
- IORT port from Linux. The differences are as under:
    * The DMA ops are removed.
    * Modified the code for creating the SMMU devices. This also initializes
      the discoverd SMMU devices.
    * MSI code is commented out till the MSI framework API usage is clearer.
    * IORT node data parsing is delegated to the driver. Looking for comments
      on enabling the code in IORT driver. This will need a standard resource
      object. (Direct port from Linux or a new define for Xen?)
    * Assumptions on PCI IORT SMMU interaction. PCI assign device will call
      iort_iommu_configure to setup the streamids.Then it will call SMMU
      assign device with the right struct device argument.

Sameer Goel (6):
  passthrough/arm: Modify SMMU driver to use generic device definition
  arm64: Add definitions for fwnode_handle
  Introduce _xrealloc
  xen/passthrough/arm: Introduce iommu_fwspec
  ACPI: arm: Support for IORT
  acpi:arm64: Add support for parsing IORT table

 xen/arch/arm/setup.c                |   3 +
 xen/common/xmalloc_tlsf.c           |  13 +
 xen/drivers/acpi/Makefile           |   1 +
 xen/drivers/acpi/arm/Makefile       |   1 +
 xen/drivers/acpi/arm/iort.c         | 977 ++++++++++++++++++++++++++++++++++++
 xen/drivers/passthrough/arm/iommu.c |  58 +++
 xen/drivers/passthrough/arm/smmu.c  |  12 +-
 xen/include/acpi/acpi.h             |   1 +
 xen/include/acpi/acpi_iort.h        |  65 +++
 xen/include/asm-arm/device.h        |   5 +
 xen/include/xen/acpi.h              |  21 +
 xen/include/xen/fwnode.h            |  35 ++
 xen/include/xen/iommu.h             |  28 ++
 xen/include/xen/lib.h               |   7 +-
 xen/include/xen/pci.h               |   1 +
 xen/include/xen/xmalloc.h           |   1 +
 16 files changed, 1222 insertions(+), 7 deletions(-)
 create mode 100644 xen/drivers/acpi/arm/Makefile
 create mode 100644 xen/drivers/acpi/arm/iort.c
 create mode 100644 xen/include/acpi/acpi_iort.h
 create mode 100644 xen/include/xen/fwnode.h

-- 
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Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux 
Foundation Collaborative Project.

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