From: Alexey Neyman <aneyman@google.com>
Date: Fri, 25 Apr 2025 19:22:35 +0000 (+0200)
Subject: ACPICA: Interpret SIDP structures in DMAR
X-Git-Tag: v6.16-rc1~161^2~4^2~16
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f61c39494901d729d5c21ba92040e9164ea957be;p=thirdparty%2Flinux.git

ACPICA: Interpret SIDP structures in DMAR

ACPICA commit af51f730e0bccf789686cea68e116d5f0b27aacb

Added in revision 3.4 of the VT-d spec. To support SIDP, part of the
previously reserved field in the device scope structure was used to
create a 1-byte "Flags" field.

Link: https://github.com/acpica/acpica/commit/af51f730
Signed-off-by: Alexey Neyman <aneyman@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/2239745.irdbgypaU6@rjwysocki.net
---

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 329454c303b91..e0cbda95fec8f 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -819,7 +819,8 @@ enum acpi_dmar_type {
 	ACPI_DMAR_TYPE_HARDWARE_AFFINITY = 3,
 	ACPI_DMAR_TYPE_NAMESPACE = 4,
 	ACPI_DMAR_TYPE_SATC = 5,
-	ACPI_DMAR_TYPE_RESERVED = 6	/* 6 and greater are reserved */
+	ACPI_DMAR_TYPE_SIDP = 6,
+	ACPI_DMAR_TYPE_RESERVED = 7	/* 7 and greater are reserved */
 };
 
 /* DMAR Device Scope structure */
@@ -827,7 +828,8 @@ enum acpi_dmar_type {
 struct acpi_dmar_device_scope {
 	u8 entry_type;
 	u8 length;
-	u16 reserved;
+	u8 flags;
+	u8 reserved;
 	u8 enumeration_id;
 	u8 bus;
 };
@@ -923,6 +925,15 @@ struct acpi_dmar_satc {
 	u8 reserved;
 	u16 segment;
 };
+
+/* 6: so_c Integrated Device Property Reporting Structure */
+
+struct acpi_dmar_sidp {
+	struct acpi_dmar_header header;
+	u16 reserved;
+	u16 segment;
+};
+
 /*******************************************************************************
  *
  * DRTM - Dynamic Root of Trust for Measurement table