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 329454c303b9129a80017608696e2bf67f016893..e0cbda95fec8fe7aee745bbbdbdcad6a442a3b2e 100644 (file)
--- 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