irqchip/riscv-intc: Allow drivers to directly discover INTC hwnode

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Various RISC-V drivers (such as SBI IPI, SBI Timer, SBI PMU, and
KVM RISC-V) don't have associated DT node but these drivers need
standard per-CPU (local) interrupts defined by the RISC-V privileged
specification.

We add riscv_get_intc_hwnode() in arch/riscv which allows RISC-V
drivers not having DT node to discover INTC hwnode which in-turn
helps these drivers to map per-CPU (local) interrupts provided
by the INTC driver.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230328035223.1480939-3-apatel@ventanamicro.com

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Anup Patel 2023-03-28 09:22:18 +05:30 • committed by Marc Zyngier

parent 3ee92565b8

commit 0c60a31ce6

3 changed files with 29 additions and 0 deletions

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4

arch/riscv/include/asm/irq.h

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18

arch/riscv/kernel/irq.c

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7

drivers/irqchip/irq-riscv-intc.c

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