irqchip: add a SiFive PLIC driver

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Add a driver for the SiFive implementation of the RISC-V Platform Level
Interrupt Controller (PLIC).  The PLIC connects global interrupt sources
to the local interrupt controller on each hart.

This driver is based on the driver in the RISC-V tree from Palmer Dabbelt,
but has been almost entirely rewritten since, and includes many fixes
from Atish Patra.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
[Binding update by Palmer]
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

...

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Christoph Hellwig 2018-07-26 16:27:00 +02:00 • committed by Palmer Dabbelt

parent 94f592f0e5

commit 8237f8bc4f

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1

arch/riscv/configs/defconfig

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12

drivers/irqchip/Kconfig

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1

drivers/irqchip/Makefile

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260

drivers/irqchip/irq-sifive-plic.c

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