irqchip/riscv-intc: Add support for RISC-V AIA

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The RISC-V advanced interrupt architecture (AIA) extends the per-HART
local interrupts in following ways:
1. Minimum 64 local interrupts for both RV32 and RV64
2. Ability to process multiple pending local interrupts in same
   interrupt handler
3. Priority configuration for each local interrupts
4. Special CSRs to configure/access the per-HART MSI controller

Add support for #1 and #2 described above in the RISC-V intc driver.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240222094006.1030709-9-apatel@ventanamicro.com

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Anup Patel 2024-02-22 15:09:56 +05:30 • committed by Thomas Gleixner

parent abb7205794

commit 3c46fc5b55

1 changed files with 23 additions and 9 deletions

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drivers/irqchip/irq-riscv-intc.c

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