ACPI 6.x: Add definitions for MPAM table

hulk inclusion
category: feature
bugzilla: 28055
CVE: NA

------------------------------

Add structures for the ACPI MPAM table.

Code was partially borrowed from James's:
http://www.linux-arm.org/git?p=linux-jm.git;a=commit;h=b307d07f49d11a
b6841153315309a67e3163cac7, "ACPI 6.x: Add definitions for MPAM table
 [dead]".

Different with James's, we add several fields in acpi_mpam_header
structure according to MPAM ACPI Description 1.0.
Signed-off-by: NWang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-By: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/acpi/actbl2.h

@@ -32,6 +32,7 @@
 #define ACPI_SIG_MCHI           "MCHI"	/* Management Controller Host Interface table */
 #define ACPI_SIG_MPST           "MPST"	/* Memory Power State Table */
 #define ACPI_SIG_MSCT           "MSCT"	/* Maximum System Characteristics Table */
+#define ACPI_SIG_MPAM           "MPAM"	/* Memory Partitioning and Monitoring Table */
 #define ACPI_SIG_MSDM           "MSDM"	/* Microsoft Data Management Table */
 #define ACPI_SIG_MTMR           "MTMR"	/* MID Timer table */
 #define ACPI_SIG_NFIT           "NFIT"	/* NVDIMM Firmware Interface Table */
@@ -905,6 +906,63 @@ struct acpi_msct_proximity {
 	u64 memory_capacity;	/* In bytes */
 };
 
+/*
+ * MPAM - Memory Partitioning and Monitoring table
+ *
+ * Conforms to "MPAM ACPI Description 1.0",
+ * Null 0, 2017. Copyright 2017 ARM Limited or its affiliates.
+ *
+ ******************************************************************************/
+struct acpi_table_mpam {
+	struct acpi_table_header	header;/* Common ACPI table header */
+};
+
+/* Subtable header for MPAM */
+
+struct acpi_mpam_header {
+	u8			type;
+	u16			length;
+	u8			reserved;
+	u64			base_address;
+	u32			overflow_interrupt;
+	u32			overflow_flags;
+	u32			error_interrupt;
+	u32			error_interrupt_flags;
+	u32			not_ready_max;
+	u32			offset;
+};
+
+/* Values for subtable type in ACPI_MPAM_NODE_HEADER */
+
+enum AcpiMpamType {
+	ACPI_MPAM_TYPE_SMMU		= 0,
+	ACPI_MPAM_TYPE_CACHE		= 1,
+	ACPI_MPAM_TYPE_MEMORY		= 2,
+	ACPI_MPAM_TYPE_UNKNOWN		= 3
+};
+
+/* Flags */
+#define ACPI_MPAM_IRQ_FLAGS    (1)     /* Interrupt mode */
+
+/*
+ *  MPAM Subtables
+ */
+struct acpi_mpam_node_smmu {
+	struct acpi_mpam_header	header;
+	u32			IORT_ref;
+};
+
+struct acpi_mpam_node_cache {
+	struct acpi_mpam_header	header;
+	u32			PPTT_ref;
+};
+
+struct acpi_mpam_node_memory {
+	struct acpi_mpam_header	header;
+	u8			proximity_domain;
+	u8			reserved1[3];
+};
+
 /*******************************************************************************
  *
  * MSDM - Microsoft Data Management table