On Sun, Oct 22, 2017 at 12:15:52PM +0900, Stafford Horne wrote: > From: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx> > > IPI driver for the Open Multi-Processor Interrupt Controller (ompic) as > described in the Multi-core support section of the OpenRISC 1.2 > proposed architecture specification: > > https://github.com/stffrdhrn/doc/raw/arch-1.2-proposal/openrisc-arch-1.2-rev0.pdf > > Each OpenRISC core contains a full interrupt controller which is used in > the SMP architecture for interrupt balancing. This IPI device, the > ompic, is the only external device required for enabling SMP on > OpenRISC. > > Pending ops are stored in a memory bit mask which can allow multiple > pending operations to be set and serviced at a time. This is mostly > borrowed from the alpha IPI implementation. > > Cc: Marc Zyngier <marc.zyngier@xxxxxxx> > Cc: Rob Herring <robh@xxxxxxxxxx> > Signed-off-by: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx> > [shorne@xxxxxxxxx: converted ops to bitmask, wrote commit message] > Signed-off-by: Stafford Horne <shorne@xxxxxxxxx> > --- > > Changes since v2 > - Fixed some issues with missing static > - Fixed spelling issue with multi-core > - Added back #interrupt-cells > > Changes since v1 > - Added openrisc, prefix > - Clarified 8 bytes per cpu > - Removed #interrupt-cells as this will not be an irq parent > - Changed ops to be percpu > - Added DTS and intialization failure validations > > > .../interrupt-controller/openrisc,ompic.txt | 22 +++ Acked-by: Rob Herring <robh@xxxxxxxxxx> > MAINTAINERS | 1 + > arch/openrisc/Kconfig | 1 + > drivers/irqchip/Kconfig | 3 + > drivers/irqchip/Makefile | 1 + > drivers/irqchip/irq-ompic.c | 205 +++++++++++++++++++++ > 6 files changed, 233 insertions(+) > create mode 100644 Documentation/devicetree/bindings/interrupt-controller/openrisc,ompic.txt > create mode 100644 drivers/irqchip/irq-ompic.c -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
