linux-kernel - Re: [PATCH V3 00/10] Introduce ACPI world to GICv3 & ITS irqchip

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Date:	Thu, 11 Feb 2016 11:47:22 +0000
From:	Marc Zyngier <marc.zyngier@....com>
To:	Tomasz Nowicki <tn@...ihalf.com>, tglx@...utronix.de,
	jason@...edaemon.net, rjw@...ysocki.net, lorenzo.pieralisi@....com,
	robert.richter@...iumnetworks.com, shijie.huang@....com,
	guohanjun@...wei.com, Suravee.Suthikulpanit@....com
Cc:	mw@...ihalf.com, graeme.gregory@...aro.org,
	Catalin.Marinas@....com, will.deacon@....com,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	hanjun.guo@...aro.org, linux-arm-kernel@...ts.infradead.org,
	ddaney.cavm@...il.com
Subject: Re: [PATCH V3 00/10] Introduce ACPI world to GICv3 & ITS irqchip

Thomas, Hanjun,

On 19/01/16 13:11, Tomasz Nowicki wrote:
> Patches base on Suravee's ACPI GICv2m support:
> https://lkml.org/lkml/2015/12/10/475
> 
> The following git branch contains submitted patches along with
> the useful patches from the test point of view (mainly ACPI ARM64 PCI support).
> https://github.com/semihalf-nowicki-tomasz/linux.git (gicv3-its-acpi-v3)
> 
> Series has been tested on Cavium ThunderX server.
> 
> 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
> 
> Hanjun Guo (1):
>   irqchip / GICv3: remove gic root node in ITS
> 
> Tomasz Nowicki (9):
>   irqchip / GICv3: Refactor gic_of_init() for GICv3 driver
>   irqchip / GICv3: Add ACPI support for GICv3+ initialization
>   irqchip,GICv3,ACPI: Add redistributor support via GICC structures.
>   irqchip, gicv3, its: Mark its_init() and its children as __init
>   irqchip, GICv3, ITS: Refator ITS dt init code to prepare for ACPI.
>   ARM64, ACPI, PCI: I/O Remapping Table (IORT) initial support.
>   irqchip, gicv3, its: Probe ITS in the ACPI way.
>   acpi, gicv3, msi: Factor out code that might be reused for ACPI
>     equivalent.
>   acpi, gicv3, its: Use MADT ITS subtable to do PCI/MSI domain
>     initialization.
> 
>  drivers/acpi/Kconfig                     |   3 +
>  drivers/acpi/Makefile                    |   1 +
>  drivers/acpi/iort.c                      | 326 +++++++++++++++++++++++++++++
>  drivers/irqchip/Kconfig                  |   1 +
>  drivers/irqchip/irq-gic-v3-its-pci-msi.c |  85 ++++++--
>  drivers/irqchip/irq-gic-v3-its.c         | 143 +++++++++----
>  drivers/irqchip/irq-gic-v3.c             | 344 ++++++++++++++++++++++++++-----
>  drivers/pci/msi.c                        |   3 +
>  include/linux/iort.h                     |  38 ++++
>  include/linux/irqchip/arm-gic-v3.h       |   2 +-
>  10 files changed, 845 insertions(+), 101 deletions(-)
>  create mode 100644 drivers/acpi/iort.c
>  create mode 100644 include/linux/iort.h
> 

I've so far queued the first 5 patches of this series (basic ACPI
support for GICv3 and associated cleanups). The rest needs additional
discussion (see my comments on patch 10), and requires some form of Ack
from the ACPI maintainers (at least for patch 7).

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...