ACPICA: Add KEYP table definition

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@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3401908.44csPzL39Z@rafael.j.wysocki

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index f726bce3eb8494f4d18406f5d24b601b7463f598..4040e4df051bfb22f6fb2f9685745f0272c09acf 100644 (file)
--- 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