linux-kernel - [PATCH v1 06/26] ACPICA: Add KEYP table definition

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <3401908.44csPzL39Z@rafael.j.wysocki>
Date: Wed, 14 Jan 2026 13:21:05 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 "Dumbre, Saket" <saket.dumbre@...el.com>
Subject: [PATCH v1 06/26] ACPICA: Add KEYP table definition

From: Dave Jiang <dave.jiang@...el.com>

Software uses this table to discover the base address of the Key
Configuration Unit (KCU) register block associated with each IDE capable
host bridge.

[1]: Root Complex IDE Key Configuration Unit Software Programming Guide
     https://cdrdv2.intel.com/v1/dl/getContent/732838

Link: https://github.com/acpica/acpica/commit/af970172e2dd
Signed-off-by: Dave Jiang <dave.jiang@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 59 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index f726bce3eb84..4040e4df051b 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -32,6 +32,7 @@
 #define ACPI_SIG_ERDT           "ERDT"	/* Enhanced Resource Director Technology */
 #define ACPI_SIG_IORT           "IORT"	/* IO Remapping Table */
 #define ACPI_SIG_IVRS           "IVRS"	/* I/O Virtualization Reporting Structure */
+#define ACPI_SIG_KEYP           "KEYP"	/* Key Programming Interface for IDE */
 #define ACPI_SIG_LPIT           "LPIT"	/* Low Power Idle Table */
 #define ACPI_SIG_MADT           "APIC"	/* Multiple APIC Description Table */
 #define ACPI_SIG_MCFG           "MCFG"	/* PCI Memory Mapped Configuration table */
@@ -1065,6 +1066,64 @@ struct acpi_ivrs_memory {
 	u64 memory_length;
 };
 
+/*******************************************************************************
+ *
+ * KEYP - Key Programming Interface for Root Complex Integrity and Data
+ *        Encryption (IDE)
+ *        Version 1
+ *
+ * Conforms to "Key Programming Interface for Root Complex Integrity and Data
+ * Encryption (IDE)" document. See under ACPI-Related Documents.
+ *
+ ******************************************************************************/
+struct acpi_table_keyp {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u32 reserved;
+};
+
+/* KEYP common subtable header */
+
+struct acpi_keyp_common_header {
+	u8 type;
+	u8 reserved;
+	u16 length;
+};
+
+/* Values for Type field above */
+
+enum acpi_keyp_type {
+	ACPI_KEYP_TYPE_CONFIG_UNIT = 0,
+};
+
+/* Root Port Information Structure */
+
+struct acpi_keyp_rp_info {
+	u16 segment;
+	u8 bus;
+	u8 devfn;
+};
+
+/* Key Configuration Unit Structure */
+
+struct acpi_keyp_config_unit {
+	struct acpi_keyp_common_header header;
+	u8 protocol_type;
+	u8 version;
+	u8 root_port_count;
+	u8 flags;
+	u64 register_base_address;
+	struct acpi_keyp_rp_info rp_info[];
+};
+
+enum acpi_keyp_protocol_type {
+	ACPI_KEYP_PROTO_TYPE_INVALID = 0,
+	ACPI_KEYP_PROTO_TYPE_PCIE,
+	ACPI_KEYP_PROTO_TYPE_CXL,
+	ACPI_KEYP_PROTO_TYPE_RESERVED
+};
+
+#define ACPI_KEYP_F_TVM_USABLE      (1)
+
 /*******************************************************************************
  *
  * LPIT - Low Power Idle Table
-- 
2.51.0