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Message-ID: <571E5288.8030602@arm.com>
Date: Mon, 25 Apr 2016 12:23:20 -0500
From: Jeremy Linton <jeremy.linton@....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,
jiang.liu@...ux.intel.com, jchandra@...adcom.com
Cc: jcm@...hat.com, linaro-acpi@...ts.linaro.org,
linux-pci@...r.kernel.org, Liviu.Dudau@....com,
ddaney@...iumnetworks.com, linux-kernel@...r.kernel.org,
linux-acpi@...r.kernel.org, robert.richter@...iumnetworks.com,
Suravee.Suthikulpanit@....com, msalter@...hat.com,
wangyijing@...wei.com, mw@...ihalf.com,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V6 00/13] Support for generic ACPI based PCI host
controller
On 04/15/2016 12:06 PM, Tomasz Nowicki wrote:
> 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@...hub.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.
I did some basic testing of this series on ARM's JunoR2 platform.
Everything seems to work as expected, the on-board SATA/Ethernet work
correctly as do a couple of boards plugged into the slots.
Tested-by: Jeremy Linton <jeremy.linton@....com>
Thanks!
>
> 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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