From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Cooper Subject: Re: [PATCH 3/4 V3] irqchip: gic: Add supports for ARM GICv2m MSI(-X) Date: Thu, 17 Jul 2014 09:13:20 -0400 Message-ID: <20140717131320.GM13108@titan.lakedaemon.net> References: <1404947104-21345-1-git-send-email-suravee.suthikulpanit@amd.com> <1404947104-21345-4-git-send-email-suravee.suthikulpanit@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1404947104-21345-4-git-send-email-suravee.suthikulpanit@amd.com> Sender: linux-pci-owner@vger.kernel.org To: suravee.suthikulpanit@amd.com Cc: marc.zyngier@arm.com, mark.rutland@arm.com, pawel.moll@arm.com, Catalin.Marinas@arm.com, Will.Deacon@arm.com, tglx@linutronix.de, Harish.Kasiviswanathan@amd.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org On Wed, Jul 09, 2014 at 06:05:03PM -0500, suravee.suthikulpanit@amd.com wrote: > From: Suravee Suthikulpanit > > ARM GICv2m specification extends GICv2 to support MSI(-X) with > a new set of register frames. This patch introduces support for > the non-secure GICv2m register frame. > > The driver currently matchs "arm,gic-400-plus" in device tree binding, > which implements GICv2m. > > The "msi-controller" keyword in ARM GIC devicetree binding is used to indentify > GIC driver that it should enable MSI(-X) support, The region of GICv2m MSI > register frame is specified using the register frame index 4 in the device tree. > MSI support is optional. > > Each GIC maintains an "msi_chip" structure. To discover the msi_chip, > PCI host driver can do the following: > > struct device_node *gic_node = of_irq_find_parent(pdev->dev.of_node); > pcie_bus->msi_chip = of_pci_find_msi_chip_by_node(gic_node); > > Cc: Mark Rutland > Cc: Marc Zyngier > Cc: Jason Cooper > Cc: Catalin Marinas > Cc: Will Deacon > Signed-off-by: Suravee Suthikulpanit > --- > Documentation/devicetree/bindings/arm/gic.txt | 20 +- > arch/arm64/Kconfig | 1 + > drivers/irqchip/Kconfig | 7 + > drivers/irqchip/Makefile | 1 + > drivers/irqchip/irq-gic-v2m.c | 251 ++++++++++++++++++++++++++ > drivers/irqchip/irq-gic-v2m.h | 13 ++ > drivers/irqchip/irq-gic.c | 23 ++- > drivers/irqchip/irq-gic.h | 31 +++- > 8 files changed, 334 insertions(+), 13 deletions(-) > create mode 100644 drivers/irqchip/irq-gic-v2m.c > create mode 100644 drivers/irqchip/irq-gic-v2m.h Applied to irqchip/gic with some minor typos fixed in the commit message. thx, Jason.