On Wed, Jul 09, 2014 at 06:05:03PM -0500, suravee.suthikulpanit@xxxxxxx wrote: > From: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx> > > 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 <Mark.Rutland@xxxxxxx> > Cc: Marc Zyngier <Marc.Zyngier@xxxxxxx> > Cc: Jason Cooper <jason@xxxxxxxxxxxxxx> > Cc: Catalin Marinas <Catalin.Marinas@xxxxxxx> > Cc: Will Deacon <Will.Deacon@xxxxxxx> > Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx> > --- > 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. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
