linux-kernel - Re: [PATCH V7 0/8] Introduce ACPI world to ITS irqchip

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Message-ID: <20160809104500.GU22012@rric.localdomain>
Date:	Tue, 9 Aug 2016 12:45:00 +0200
From:	Robert Richter <robert.richter@...ium.com>
To:	Tomasz Nowicki <tn@...ihalf.com>
CC:	<marc.zyngier@....com>, <tglx@...utronix.de>,
	<jason@...edaemon.net>, <rjw@...ysocki.net>, <bhelgaas@...gle.com>,
	<lorenzo.pieralisi@....com>, <shijie.huang@....com>,
	<Suravee.Suthikulpanit@....com>, <hanjun.guo@...aro.org>,
	<al.stone@...aro.org>, <mw@...ihalf.com>,
	<graeme.gregory@...aro.org>, <Catalin.Marinas@....com>,
	<will.deacon@....com>, <linux-kernel@...r.kernel.org>,
	<linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <ddaney.cavm@...il.com>,
	<okaya@...eaurora.org>, <andrea.gallo@...aro.org>,
	<linux-pci@...r.kernel.org>
Subject: Re: [PATCH V7 0/8] Introduce ACPI world to ITS irqchip

On 20.06.16 13:02:13, Tomasz Nowicki wrote:
> The series builds the PCI/MSI domain stack based on initial IORT driver
> which is added in first place. As a reference please see IORT spec:
> http://infocenter.arm.com/help/topic/com.arm.doc.den0049b/DEN0049B_IO_Remapping_Table.pdf
> 
> Tested on Cavium ThunderX server. The patches can be found here:
> https://github.com/semihalf-nowicki-tomasz/linux.git (its-acpi-v7)
> 
> v6 -> v7
> - rebased against irq/irqchip-4.8
> - improvements for IORT ID mapping
> - call IORT init call from acpi_init() instead of arch_initcall()
> - split IORT driver in to two parts: core and ITS/MSI
> 
> v5 -> v6
> - added locking mechanism for IORT list with domain token
> - IORT function name improvements
> - extended IORT RID mapping helper
> - reworked IORT to be more SMMU friendly
> - IORT functions which map RID and find corresponding domain are not
>   PCI specific any more (struct pci_dev -> struct device)
> - bug fixes
> 
> v4 -> v5
> - rebased against v4.7-rc1
> - drop generic layer and call IORT functions directly
> - improve resource abstraction and string formatting
> 
> v3 -> v4
> - rebased against v4.5
> - add ACPI support for IRQ domain handling on a per-device basis
> - reorder domain setup step
> - improve error handling
> - code style improvements
> 
> v2 -> v3
> - rebased on top of 4.4
> - fixes and improvements for redistributor init via GICC structures
> - fixes as per kbuild reports
> 
> v1 -> v2
> - rebased on top of 4.4-rc4
> - use pci_msi_domain_get_msi_rid for requester ID to device ID translation
> 
> Tomasz Nowicki (8):
>   ACPI: I/O Remapping Table (IORT) initial support
>   ACPI: Add new IORT functions to support MSI domain handling
>   PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table
>   irqchip/gicv3-its: Cleanup for ITS domain initialization
>   irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI
>   irqchip/gicv3-its: Probe ITS in the ACPI way
>   irqchip/gicv3-its: Factor out code that might be reused for ACPI
>   irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain
>     initialization
> 
>  drivers/acpi/Kconfig                     |   3 +
>  drivers/acpi/Makefile                    |   1 +
>  drivers/acpi/bus.c                       |   2 +
>  drivers/acpi/iort.c                      | 389 +++++++++++++++++++++++++++++++
>  drivers/irqchip/Kconfig                  |   1 +
>  drivers/irqchip/irq-gic-v3-its-pci-msi.c |  88 +++++--
>  drivers/irqchip/irq-gic-v3-its.c         | 169 ++++++++++----
>  drivers/irqchip/irq-gic-v3.c             |   7 +-
>  drivers/pci/msi.c                        |  11 +-
>  include/linux/iort.h                     |  41 ++++
>  include/linux/irqchip/arm-gic-v3.h       |   4 +-
>  11 files changed, 646 insertions(+), 70 deletions(-)
>  create mode 100644 drivers/acpi/iort.c
>  create mode 100644 include/linux/iort.h

For the whole series:

Tested-by: Robert Richter <rrichter@...ium.com>

Tested on Cavium ThunderX, test included:

 [RFC PATCH V5 0/5] ECAM quirks handling for ARM64 platforms

Thanks Tomasz,

-Robert