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

Tomasz Nowicki
2016-04-15T17:06:35Z

>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@github.com: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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