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The RISC-V advanced interrupt architecture (AIA) specification defines advanced platform-level interrupt controller (APLIC) which has two modes of operation: 1) Direct mode and 2) MSI mode. (For more details, refer https://github.com/riscv/riscv-aia) In APLIC direct-mode, wired interrupts are forwared to CPUs (or HARTs) as a local external interrupt. Add a platform irqchip driver for the RISC-V APLIC direct-mode to support RISC-V platforms having only wired interrupts. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Björn Töpel <bjorn@rivosinc.com> Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20240307140307.646078-7-apatel@ventanamicro.com |
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