Re: [PATCH v5 07/17] ACPI: bus: Add RINTC IRQ model for RISC-V

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On Wed, May 01, 2024 at 05:47:32PM +0530, Sunil V L wrote:
> Add the IRQ model for RISC-V INTC so that acpi_set_irq_model can use this
> for RISC-V.
> 
> Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
> ---
>  drivers/acpi/bus.c   | 3 +++
>  include/linux/acpi.h | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
> index 17ee483c3bf4..6739db258a95 100644
> --- a/drivers/acpi/bus.c
> +++ b/drivers/acpi/bus.c
> @@ -1190,6 +1190,9 @@ static int __init acpi_bus_init_irq(void)
>  	case ACPI_IRQ_MODEL_LPIC:
>  		message = "LPIC";
>  		break;
> +	case ACPI_IRQ_MODEL_RINTC:
> +		message = "RINTC";
> +		break;
>  	default:
>  		pr_info("Unknown interrupt routing model\n");
>  		return -ENODEV;
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 846a4001b5e0..c1a01fd02873 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -107,6 +107,7 @@ enum acpi_irq_model_id {
>  	ACPI_IRQ_MODEL_PLATFORM,
>  	ACPI_IRQ_MODEL_GIC,
>  	ACPI_IRQ_MODEL_LPIC,
> +	ACPI_IRQ_MODEL_RINTC,

Is the ACPI_IRQ_MODEL_RINTC value documented somewhere?  Maybe an ECR
for the ACPI spec?

acpi_bus_init_irq() is going to pass ACPI_IRQ_MODEL_RINTC to _PIC, and
ACPI r6.5, sec 5.8.1 only mentions the ACPI_IRQ_MODEL_PIC,
ACPI_IRQ_MODEL_IOAPIC, and ACPI_IRQ_MODEL_IOSAPIC values.

Even the existing ACPI_IRQ_MODEL_PLATFORM, ACPI_IRQ_MODEL_GIC, and
ACPI_IRQ_MODEL_LPIC values aren't mentioned in ACPI r6.5.

>  	ACPI_IRQ_MODEL_COUNT
>  };
>  
> -- 
> 2.40.1
> 




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