[PATCH V6 00/13] Support for generic ACPI based PCI host controller

[Tomasz Nowicki]

>From the functionality point of view this series might be split into the
following logic parts:
1. Necessary fixes as the preparation for using driver on ARM64.
2. New ECAM API and update for users of the pci-host-common API
3. Use new MCFG interface and implement generic ACPI based PCI host controller driver.
4. Enable above driver on ARM64

Patches has been built on top of 4.6-rc2 and can be found here:
git@xxxxxxxxxx:semihalf-nowicki-tomasz/linux.git (pci-acpi-v6)

This has been tested on Cavium ThunderX server. Any help in reviewing and
testing is very appreciated.

v5 -> v6
- dropped idea of x86 MMCONFIG code refactoring
- integrated JC's patches which introduce new ECAM API:
  https://lkml.org/lkml/2016/4/11/907
  git: https://github.com/jchandra-brcm/linux/ (arm64-acpi-pci-v3)
- integrated Sinan's fix for releasing IO resources, see patch [06/13]
- added ACPI support for ThunderX ECAM and PEM drivers
- rebased to 4.6-rc2

v4 -> v5
- dropped MCFG refactoring group patches 1-6 from series v4 and integrated Jayachandran's patch
  https://patchwork.ozlabs.org/patch/575525/
- rewrite PCI legacy IRQs allocation
- squashed two patches 11 and 12 from series v4, fixed bisection issue
- changelog improvements
- rebased to 4.5-rc3

v3 -> v4
- dropped Jiang's fix http://lkml.iu.edu/hypermail/linux/kernel/1601.1/04318.html
- added Lorenzo's fix patch 19/24
- ACPI PCI bus domain number assigning cleanup
- changed resource management, we now claim and reassign resources
- improvements for applying quirks
- dropped Matthew's http://www.spinics.net/lists/linux-pci/msg45950.html dependency
- rebased to 4.5-rc1

v2 -> v3
- fix legacy IRQ assigning and IO ports registration
- remove reference to arch specific companion device for ia64
- move ACPI PCI host controller driver to pci_root.c
- drop generic domain assignment for x86 and ia64 as I am not
  able to run all necessary test variants
- drop patch which cleaned legacy IRQ assignment since it belongs to
  Mathew's series:
  https://patchwork.ozlabs.org/patch/557504/
- extend MCFG quirk code
- rebased to 4.4

v1 -> v2
- moved non-arch specific piece of code to dirver/acpi/ directory
- fixed IO resource handling
- introduced PCI config accessors quirks matching
- moved ACPI_COMPANION_SET to generic code

v1 - https://lkml.org/lkml/2015/10/27/504
v2 - https://lkml.org/lkml/2015/12/16/246
v3 - http://lkml.iu.edu/hypermail/linux/kernel/1601.1/04308.html
v4 - https://lkml.org/lkml/2016/2/4/646
v5 - https://lkml.org/lkml/2016/2/16/426

Jayachandran C (2):
  PCI: Provide common functions for ECAM mapping
  PCI: generic, thunder: update to use generic ECAM API

Tomasz Nowicki (11):
  pci, acpi, x86, ia64: Move ACPI host bridge device companion
    assignment to core code.
  pci, acpi: Provide generic way to assign bus domain number.
  x86, ia64: Include acpi_pci_{add|remove}_bus to the default
    pcibios_{add|remove}_bus implementation.
  pci, of: Move the PCI I/O space management to PCI core code.
  acpi, pci: Support IO resources when parsing PCI host bridge
    resources.
  arm64, pci, acpi: ACPI support for legacy IRQs parsing and
    consolidation with DT code.
  pci, acpi: Support for ACPI based generic PCI host controller
  arm64, pci, acpi: Start using ACPI based PCI host controller driver
    for ARM64.
  pci, acpi: Match PCI config space accessors against platfrom specific
    quirks.
  pci, pci-thunder-ecam: Add ACPI support for ThunderX ECAM.
  pci, pci-thunder-pem: Add ACPI support for ThunderX PEM.

 arch/arm64/Kconfig                  |  15 +++
 arch/arm64/include/asm/cpufeature.h |   3 +-
 arch/arm64/kernel/cpu_errata.c      |   8 ++
 arch/arm64/kernel/pci.c             |  35 ++---
 arch/ia64/hp/common/sba_iommu.c     |   2 +-
 arch/ia64/include/asm/pci.h         |   1 -
 arch/ia64/pci/pci.c                 |  26 ----
 arch/ia64/sn/kernel/io_acpi_init.c  |   4 +-
 arch/x86/include/asm/pci.h          |   3 -
 arch/x86/pci/acpi.c                 |  17 ---
 arch/x86/pci/common.c               |  10 --
 drivers/acpi/Kconfig                |   8 ++
 drivers/acpi/Makefile               |   1 +
 drivers/acpi/bus.c                  |   1 +
 drivers/acpi/pci_gen_host.c         | 259 ++++++++++++++++++++++++++++++++++++
 drivers/acpi/pci_root.c             |  58 +++++++-
 drivers/of/address.c                | 116 +---------------
 drivers/pci/Kconfig                 |   3 +
 drivers/pci/Makefile                |   2 +
 drivers/pci/ecam.c                  | 137 +++++++++++++++++++
 drivers/pci/ecam.h                  |  66 +++++++++
 drivers/pci/host/Kconfig            |   1 +
 drivers/pci/host/pci-host-common.c  | 119 ++++++++---------
 drivers/pci/host/pci-host-common.h  |  47 -------
 drivers/pci/host/pci-host-generic.c |  52 ++------
 drivers/pci/host/pci-thunder-ecam.c |  70 ++++++----
 drivers/pci/host/pci-thunder-pem.c  | 215 ++++++++++++++++++++++--------
 drivers/pci/pci.c                   | 150 ++++++++++++++++++++-
 drivers/pci/probe.c                 |   5 +
 include/asm-generic/vmlinux.lds.h   |   7 +
 include/linux/of_address.h          |   9 --
 include/linux/pci-acpi.h            |  20 +++
 include/linux/pci.h                 |  12 ++
 33 files changed, 1029 insertions(+), 453 deletions(-)
 create mode 100644 drivers/acpi/pci_gen_host.c
 create mode 100644 drivers/pci/ecam.c
 create mode 100644 drivers/pci/ecam.h
 delete mode 100644 drivers/pci/host/pci-host-common.h

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1.9.1