On 06/22/2018 04:20 PM, Palmer Dabbelt wrote: > From: Palmer Dabbelt <palmer@xxxxxxxxxxx> > > This patch adds a driver that manages the local interrupts on each > RISC-V hart, as specifiec by the RISC-V supervisor level ISA manual. > The local interrupt controller manages software interrupts, timer > interrupts, and hardware interrupts (which are routed via the > platform level interrupt controller). Per-hart local interrupt > controllers are found on all RISC-V systems. > > CC: Michael Clark <mjc@xxxxxxxxxx> > Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxx> > --- > drivers/irqchip/Kconfig | 13 +++ > drivers/irqchip/Makefile | 1 + > drivers/irqchip/irq-riscv-intc.c | 215 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 229 insertions(+) > create mode 100644 drivers/irqchip/irq-riscv-intc.c > > diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig > index e9233db16e03..bf7fc86673b1 100644 > --- a/drivers/irqchip/Kconfig > +++ b/drivers/irqchip/Kconfig > @@ -372,3 +372,16 @@ config QCOM_PDC > IRQs for Qualcomm Technologies Inc (QTI) mobile chips. > > endmenu > + > +config RISCV_INTC > + #bool "RISC-V Interrupt Controller" Hi, What does the leading '#' do? > + depends on RISCV > + default y > + help > + This enables support for the local interrupt controller found in > + standard RISC-V systems. The local interrupt controller handles > + timer interrupts, software interrupts, and hardware interrupts. > + Without a local interrupt controller the system will be unable to > + handle any interrupts, including those passed via the PLIC. > + > + If you don't know what to do here, say Y. > diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile > index 15f268f646bf..74e333cc274c 100644 > --- a/drivers/irqchip/Makefile > +++ b/drivers/irqchip/Makefile > @@ -87,3 +87,4 @@ obj-$(CONFIG_MESON_IRQ_GPIO) += irq-meson-gpio.o > obj-$(CONFIG_GOLDFISH_PIC) += irq-goldfish-pic.o > obj-$(CONFIG_NDS32) += irq-ativic32.o > obj-$(CONFIG_QCOM_PDC) += qcom-pdc.o > +obj-$(CONFIG_RISCV_INTC) += irq-riscv-intc.o -- ~Randy -- 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
