linux-kernel - Re: [RFC PATCH V5 0/5] ECAM quirks handling for ARM64 platforms

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Date:	Mon, 08 Aug 2016 15:44:05 -0400
From:	Mark Salter <msalter@...hat.com>
To:	Tomasz Nowicki <tn@...ihalf.com>, helgaas@...nel.org,
	arnd@...db.de, will.deacon@....com, catalin.marinas@....com,
	rafael@...nel.org, Lorenzo.Pieralisi@....com
Cc:	hanjun.guo@...aro.org, okaya@...eaurora.org, jchandra@...adcom.com,
	cov@...eaurora.org, dhdang@....com, ard.biesheuvel@...aro.org,
	robert.richter@...iumnetworks.com, mw@...ihalf.com,
	Liviu.Dudau@....com, ddaney@...iumnetworks.com,
	wangyijing@...wei.com, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linaro-acpi@...ts.linaro.org,
	jcm@...hat.com, andrea.gallo@...aro.org, jeremy.linton@....com,
	liudongdong3@...wei.com, gabriele.paoloni@...wei.com,
	jhugo@...eaurora.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH V5 0/5] ECAM quirks handling for ARM64 platforms

On Mon, 2016-08-08 at 15:05 +0200, Tomasz Nowicki wrote:
> Quirk handling relies on an idea of matching MCFG OEM ID, TABLE ID and
> revision (the ones from standard header of MCFG table).
> 
> Static array is used to keep quirk entries. Each entry consists of
> mentioned MCFG IDs along with custom pci_ops structure and initialization call.
> 
> As an example, the last patch presents quirk handling mechanism usage for
> ThunderX PEM driver.
> 
> v4 -> v5
> - rebase against v4.8-rc1
> - rework to exact MCFG OEM ID, TABLE ID, rev match
>   - use memcmp instead of strncmp
>   - no substring match
> - fix typos and dmesg message
> 
> Tomasz Nowicki (5):
>   PCI: Embed pci_ecam_ops in pci_config_window structure
>   PCI/ACPI: Move ACPI ECAM mapping to generic MCFG driver
>   PCI: Check platform specific ECAM quirks
>   ARM64/PCI: Start using quirks handling for ACPI based PCI host
>     controller
>   PCI: thunder-pem: Support quirky configuration space access for ACPI
>     based PCI host controller
> 
>  arch/arm64/kernel/pci.c            | 42 +----------------
>  drivers/acpi/pci_mcfg.c            | 40 ++++++++++++++++
>  drivers/pci/ecam.c                 |  6 +--
>  drivers/pci/host/Makefile          |  1 +
>  drivers/pci/host/mcfg-quirks.c     | 93 ++++++++++++++++++++++++++++++++++++
>  drivers/pci/host/mcfg-quirks.h     | 24 ++++++++++
>  drivers/pci/host/pci-thunder-pem.c | 96 ++++++++++++++++++++++++++++++++------
>  include/linux/pci-acpi.h           |  5 ++
>  include/linux/pci-ecam.h           |  2 +-
>  9 files changed, 252 insertions(+), 57 deletions(-)
>  create mode 100644 drivers/pci/host/mcfg-quirks.c
>  create mode 100644 drivers/pci/host/mcfg-quirks.h
> 

Tested-by: Mark Salter <msalter@...hat.com>