irqchip/riscv-imsic: Add device MSI domain support for platform devices

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The Linux platform MSI support allows per-device MSI domains so add
a platform irqchip driver for RISC-V IMSIC which provides a base IRQ
domain with MSI parent support for platform device domains.

The IMSIC platform driver assumes that the IMSIC state is already
initialized by the IMSIC early driver.

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/20240307140307.646078-4-apatel@ventanamicro.com

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Anup Patel 2024-03-07 19:33:01 +05:30 • committed by Thomas Gleixner

parent 21a8f8a0eb

commit 027e125acd

3 changed files with 345 additions and 1 deletions

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2

drivers/irqchip/Makefile

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343

drivers/irqchip/irq-riscv-imsic-platform.c

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1

drivers/irqchip/irq-riscv-imsic-state.h

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