[Xen-devel] [PATCH 0/2] Re-factoring passthrough/pci.c and adding place-holder code for ARM/PCI

[Manish Jaggi <mjaggi@xxxxxxxxxxxxxxxxxx>]

Xen currently does not have PCI support for ARM builds. This patch set
makes the code compilable for ARM PCI and adds places-holder code
which would be replaced with PCI pass-through support patch series.

Re-factor MSI Handling
-------------
There is a some x86 specific code which is found in common code:
xen/drivers/passthrough/pci.c which needs to be re factored.

MSI/X are configured and handled by dom0 or domU code on ARM64 and is not
required to be part of common code. However there are functions which are
used as part of common code and calls to these functions cannot be easily
re factored like pci_cleanup_msi.

xen/drivers/passthrough/<arch>/pci.c files handle these functions.

Add ARM PCI Support
---------------
a) Place holder functions are added for pci_conf_read/write calls.
b) Macros dev_is_pci, pci_to_dev are implemented in
drivers/passthrough/pci/arm code

Manish Jaggi (2):
  xen/x86: Patch re-factors MSI/X config code from
    drivers/passthrough/pci.c to x86 specific
  xen/arm: Make HAS_PCI compilable on ARM by adding place-holder code

 xen/arch/arm/Makefile                |    1 +
 xen/arch/arm/pci.c                   |   60 ++++++++++++++++++
 xen/drivers/passthrough/arm/Makefile |    1 +
 xen/drivers/passthrough/arm/pci.c    |   88 ++++++++++++++++++++++++++
 xen/drivers/passthrough/arm/smmu.c   |    1 -
 xen/drivers/passthrough/pci.c        |  111 +++-----------------------------
 xen/drivers/passthrough/x86/Makefile |    1 +
 xen/drivers/passthrough/x86/pci.c    |  115 ++++++++++++++++++++++++++++++++++
 xen/include/asm-arm/device.h         |   33 +++++++---
 xen/include/asm-arm/domain.h         |    3 +
 xen/include/asm-arm/pci.h            |    7 ++-
 xen/include/asm-x86/msi.h            |    1 -
 xen/include/xen/pci.h                |   20 +++++-
 13 files changed, 323 insertions(+), 119 deletions(-)
 create mode 100644 xen/arch/arm/pci.c
 create mode 100644 xen/drivers/passthrough/arm/pci.c
 create mode 100644 xen/drivers/passthrough/x86/pci.c

--
1.7.9.5


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