linux-kernel - Re: [PATCH v3 3/7] acpi/ghes: Support GPIO error source.

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Message-ID: <20240730104028.4f503d91@imammedo.users.ipa.redhat.com>
Date: Tue, 30 Jul 2024 10:40:28 +0200
From: Igor Mammedov <imammedo@...hat.com>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, Shiju Jose
 <shiju.jose@...wei.com>, "Michael S. Tsirkin" <mst@...hat.com>, Ani Sinha
 <anisinha@...hat.com>, Dongjiu Geng <gengdongjiu1@...il.com>,
 linux-kernel@...r.kernel.org, qemu-arm@...gnu.org, qemu-devel@...gnu.org
Subject: Re: [PATCH v3 3/7] acpi/ghes: Support GPIO error source.

On Mon, 22 Jul 2024 08:45:55 +0200
Mauro Carvalho Chehab <mchehab+huawei@...nel.org> wrote:

> From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> 
> Add error notification to GHES v2 using the GPIO source.
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
>  hw/acpi/ghes.c         | 8 ++++++--
>  include/hw/acpi/ghes.h | 1 +
>  2 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
> index e9511d9b8f71..5b8bc6eeb437 100644
> --- a/hw/acpi/ghes.c
> +++ b/hw/acpi/ghes.c
> @@ -34,8 +34,8 @@
>  /* The max size in bytes for one error block */
>  #define ACPI_GHES_MAX_RAW_DATA_LENGTH   (1 * KiB)
>  
> -/* Now only support ARMv8 SEA notification type error source */
> -#define ACPI_GHES_ERROR_SOURCE_COUNT        1
> +/* Support ARMv8 SEA notification type error source and GPIO interrupt. */
> +#define ACPI_GHES_ERROR_SOURCE_COUNT        2
>  
>  /* Generic Hardware Error Source version 2 */
>  #define ACPI_GHES_SOURCE_GENERIC_ERROR_V2   10
> @@ -327,6 +327,9 @@ static void build_ghes_v2(GArray *table_data, int source_id, BIOSLinker *linker)
>           */
>          build_ghes_hw_error_notification(table_data, ACPI_GHES_NOTIFY_SEA);
>          break;
> +    case ACPI_HEST_SRC_ID_GPIO:
> +        build_ghes_hw_error_notification(table_data, ACPI_GHES_NOTIFY_GPIO);
> +        break;
>      default:
>          error_report("Not support this error source");
>          abort();
> @@ -370,6 +373,7 @@ void acpi_build_hest(GArray *table_data, BIOSLinker *linker,
>      /* Error Source Count */
>      build_append_int_noprefix(table_data, ACPI_GHES_ERROR_SOURCE_COUNT, 4);
>      build_ghes_v2(table_data, ACPI_HEST_SRC_ID_SEA, linker);
> +    build_ghes_v2(table_data, ACPI_HEST_SRC_ID_GPIO, linker);
>  
>      acpi_table_end(linker, &table);
>  }
> diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
> index 674f6958e905..4f1ab1a73a06 100644
> --- a/include/hw/acpi/ghes.h
> +++ b/include/hw/acpi/ghes.h
> @@ -58,6 +58,7 @@ enum AcpiGhesNotifyType {
>  
>  enum {
>      ACPI_HEST_SRC_ID_SEA = 0,
> +    ACPI_HEST_SRC_ID_GPIO = 1,
is it defined by some spec, or just a made up number?

>      /* future ids go here */
>      ACPI_HEST_SRC_ID_RESERVED,
>  };