linux-kernel - [PATCH 0/3] Amazon's Annapurna Labs Fabric Interrupt Controller

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Message-ID: <1559717653-11258-1-git-send-email-talel@amazon.com>
Date:   Wed, 5 Jun 2019 09:54:10 +0300
From:   Talel Shenhar <talel@...zon.com>
To:     <nicolas.ferre@...rochip.com>, <jason@...edaemon.net>,
        <marc.zyngier@....com>, <mark.rutland@....com>,
        <mchehab+samsung@...nel.org>, <robh+dt@...nel.org>,
        <davem@...emloft.net>, <shawn.lin@...k-chips.com>,
        <tglx@...utronix.de>, <devicetree@...r.kernel.org>,
        <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
CC:     <dwmw@...zon.co.uk>, <benh@...nel.crashing.org>,
        <jonnyc@...zon.com>, <hhhawa@...zon.com>, <ronenk@...zon.com>,
        <hanochu@...zon.com>, <barakw@...zon.com>,
        Talel Shenhar <talel@...zon.com>
Subject: [PATCH 0/3] Amazon's Annapurna Labs Fabric Interrupt Controller

This series introduces support for Amazon's Annapurna Labs Fabric Interrupt
Controller.

The Amazon's Annapurna Labs FIC (Fabric Interrupt Controller) has 32
inputs/sources. The output of this interrupt controller can be legacy-wired
output or, in case embedded inside PCIe devices, msi-x message. This FIC may
be cascaded into another FIC or connected directly to the main CPU
Interrupt Controller (e.g. GIC).

The FIC is a flexible HW unit that is embedded inside different parts of
the Amazon's Annapurna Labs chips. It can be a simple level 2 interrupt
controller which is then configured as a wired interrupt controller that
aggregates events from different units, or, while embedded inside PCIe
device, it can generate MSI-X messages based on the tables configured to
that PCIe device or can be configured to generate wired interrupt. 

Talel Shenhar (3):
  dt-bindings: interrupt-controller: Amazon's Annapurna Labs FIC
  irqchip: al-fic: Introduce Amazon's Annapurna Labs Fabric Interrupt
    Controller Driver
  irqchip: al-fic: Introducing support for MSI-X

 .../interrupt-controller/amazon,al-fic.txt         |  22 ++
 MAINTAINERS                                        |   7 +
 drivers/irqchip/Kconfig                            |  11 +
 drivers/irqchip/Makefile                           |   1 +
 drivers/irqchip/irq-al-fic.c                       | 388 +++++++++++++++++++++
 include/linux/irqchip/al-fic.h                     |  23 ++
 6 files changed, 452 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/amazon,al-fic.txt
 create mode 100644 drivers/irqchip/irq-al-fic.c
 create mode 100644 include/linux/irqchip/al-fic.h

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2.7.4