linux-kernel - Re: [PATCH V8 0/9] Support for ARM64 ACPI based PCI host controller

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Message-ID: <8a23e566-3aae-3af2-7b9f-e94edf1076e9@amd.com>
Date:	Thu, 9 Jun 2016 11:45:36 -0500
From:	Suravee Suthikulanit <suravee.suthikulpanit@....com>
To:	Tomasz Nowicki <tn@...ihalf.com>, <helgaas@...nel.org>,
	<arnd@...db.de>, <will.deacon@....com>, <catalin.marinas@....com>,
	<rafael@...nel.org>, <hanjun.guo@...aro.org>,
	<Lorenzo.Pieralisi@....com>, <okaya@...eaurora.org>,
	<jchandra@...adcom.com>
CC:	<robert.richter@...iumnetworks.com>, <mw@...ihalf.com>,
	<Liviu.Dudau@....com>, <ddaney@...iumnetworks.com>,
	<wangyijing@...wei.com>, <msalter@...hat.com>,
	<linux-pci@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-acpi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linaro-acpi@...ts.linaro.org>, <jcm@...hat.com>,
	<andrea.gallo@...aro.org>, <dhdang@....com>,
	<jeremy.linton@....com>, <liudongdong3@...wei.com>,
	<cov@...eaurora.org>
Subject: Re: [PATCH V8 0/9] Support for ARM64 ACPI based PCI host controller

On 5/30/2016 10:14 AM, Tomasz Nowicki wrote:
> From the functionality point of view this series may be split into the
> following logic parts:
> 1. Export ECAM API and add parent device to pci_config_window
> 2. Add IO resources handling to PCI core code
> 3. Support for generic domain assignment based on ACPI
> 4. New MCFG driver
> 5. Implement ARM64 ACPI based PCI host controller driver under arch/arm64/
>
> Patches has been built on top of 4.7-rc1 and can be found here:
> git@...hub.com:semihalf-nowicki-tomasz/linux.git (pci-acpi-v8)
>
> This has been tested on Cavium ThunderX server. Any help in reviewing and
> testing is very appreciated.
>
> v7 -> v8
> - move code from drivers/acpi/pci_root_generic.c to arch/arm64/kernel/pci.c
> - minor changes around domain assignment
> - pci_mcfg.c improvements for parsing MCFG tables and lookup its entries
>
> v6 -> v7
> - drop quirks handling
> - changes for ACPI companion and domain number assignment approach
> - implement arch pcibios_{add|remove}_bus and call acpi_pci_{add|remove}_bus from there
> - cleanups around nomenclature
> - use resources oriented API for ECAM
> - fix for based address calculation before mapping ECAM region
> - remove useless lock for MCFG lookup
> - move MCFG stuff to separated file pci_mcfg.c
> - drop MCFG entries caching
> - rebase against 4.6-rc7
>
> v5 -> v6
> - drop idea of x86 MMCONFIG code refactoring
> - integrate 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)
> - integrate Sinan's fix for releasing IO resources, see patch [06/13]
> - added ACPI support for ThunderX ECAM and PEM drivers
> - rebase against 4.6-rc2
>
> v4 -> v5
> - drop MCFG refactoring group patches 1-6 from series v4 and integrate Jayachandran's patch
>   https://patchwork.ozlabs.org/patch/575525/
> - rewrite PCI legacy IRQs allocation
> - squash two patches 11 and 12 from series v4, fixed bisection issue
> - changelog improvements
> - rebase against 4.5-rc3
>
> v3 -> v4
> - drop Jiang's fix http://lkml.iu.edu/hypermail/linux/kernel/1601.1/04318.html
> - add Lorenzo's fix patch 19/24
> - ACPI PCI bus domain number assigning cleanup
> - change resource management, we now claim and reassign resources
> - improvements for applying quirks
> - drop Matthew's http://www.spinics.net/lists/linux-pci/msg45950.html dependency
> - rebase against 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
> - rebase against 4.4
>
> v1 -> v2
> - move non-arch specific piece of code to dirver/acpi/ directory
> - fix IO resource handling
> - introduce 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
> v6 - https://lkml.org/lkml/2016/4/15/594
>
> Jayachandran C (2):
>   PCI: ecam: move ecam.h to linux/include/pci-ecam.h
>   PCI: ecam: Add parent device field to pci_config_window
>
> Tomasz Nowicki (7):
>   pci: Add new function to unmap IO resources.
>   acpi, pci: Support IO resources when parsing PCI host bridge
>     resources.
>   pci, acpi: add acpi hook to assign domain number.
>   arm64, pci, acpi: ACPI support for legacy IRQs parsing and
>     consolidation with DT code.
>   acpi: Add generic MCFG table handling
>   arm64, pci, acpi: Provide ACPI-specific prerequisites for PCI bus
>     enumeration.
>   pci, acpi: ARM64 support for ACPI based generic PCI host controller
>
>  arch/arm64/Kconfig                  |   2 +
>  arch/arm64/kernel/pci.c             | 143 ++++++++++++++++++++++++++++++++++--
>  drivers/acpi/Kconfig                |   3 +
>  drivers/acpi/Makefile               |   1 +
>  drivers/acpi/pci_mcfg.c             |  94 ++++++++++++++++++++++++
>  drivers/acpi/pci_root.c             |  39 ++++++++++
>  drivers/pci/ecam.c                  |   6 +-
>  drivers/pci/ecam.h                  |  67 -----------------
>  drivers/pci/host/pci-host-common.c  |   3 +-
>  drivers/pci/host/pci-host-generic.c |   3 +-
>  drivers/pci/host/pci-thunder-ecam.c |   3 +-
>  drivers/pci/host/pci-thunder-pem.c  |   6 +-
>  drivers/pci/pci.c                   |  29 +++++++-
>  include/linux/pci-acpi.h            |   2 +
>  include/linux/pci-ecam.h            |  67 +++++++++++++++++
>  include/linux/pci.h                 |   9 ++-
>  16 files changed, 387 insertions(+), 90 deletions(-)
>  create mode 100644 drivers/acpi/pci_mcfg.c
>  delete mode 100644 drivers/pci/ecam.h
>  create mode 100644 include/linux/pci-ecam.h
>

For the series,

Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@....com>

Thanks,
Suravee