linux-kernel - [PATCH 16/20] ACPICA: iASL/MADT: Add OEM-defined subtable

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Date:   Mon, 11 Apr 2022 21:00:45 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bob Moore <robert.moore@...el.com>
Subject: [PATCH 16/20] ACPICA: iASL/MADT: Add OEM-defined subtable

From: Bob Moore <robert.moore@...el.com>

ACPICA commit 4450b89b596a2b54b0cdfe2357b49a63445c2e03

Adds support for the "reserved for OEM use" subtable (types 0x80 to 0xFF).

Link: https://github.com/acpica/acpica/commit/4450b89b
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

Index: linux-pm/include/acpi/actbl2.h
===================================================================
--- linux-pm.orig/include/acpi/actbl2.h
+++ linux-pm/include/acpi/actbl2.h
@@ -842,7 +842,8 @@ enum acpi_madt_type {
 	ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR = 14,
 	ACPI_MADT_TYPE_GENERIC_TRANSLATOR = 15,
 	ACPI_MADT_TYPE_MULTIPROC_WAKEUP = 16,
-	ACPI_MADT_TYPE_RESERVED = 17	/* 17 and greater are reserved */
+	ACPI_MADT_TYPE_RESERVED = 17,	/* 17 to 0x7F are reserved */
+	ACPI_MADT_TYPE_OEM_RESERVED = 0x80	/* 0x80 to 0xFF are reserved for OEM use */
 };
 
 /*
@@ -1072,6 +1073,12 @@ struct acpi_madt_multiproc_wakeup_mailbo
 
 #define ACPI_MP_WAKE_COMMAND_WAKEUP    1
 
+/* 17: OEM data */
+
+struct acpi_madt_oem_data {
+	u8 oem_data[0];
+};
+
 /*
  * Common flags fields for MADT subtables
  */