@@ -29,6 +29,7 @@
#define ACPI_SIG_BDAT "BDAT" /* BIOS Data ACPI Table */
#define ACPI_SIG_CCEL "CCEL" /* CC Event Log Table */
#define ACPI_SIG_CDAT "CDAT" /* Coherent Device Attribute Table */
+#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_LPIT "LPIT" /* Low Power Idle Table */
@@ -450,6 +451,195 @@ struct acpi_table_ccel {
u64 log_area_start_address;
};
+/*******************************************************************************
+ *
+ * ERDT - Enhanced Resource Director Technology (ERDT) table
+ *
+ * Conforms to "Intel Resource Director Technology Architecture Specification"
+ * Version 1.1, January 2025
+ *
+ ******************************************************************************/
+
+struct acpi_table_erdt {
+ struct acpi_table_header header; /* Common ACPI table header */
+ u32 max_clos; /* Maximum classes of service */
+ u8 reserved[24];
+ u8 erdt_substructures[];
+};
+
+/* Values for subtable type in struct acpi_subtbl_hdr_16 */
+
+enum acpi_erdt_type {
+ ACPI_ERDT_TYPE_RMDD = 0,
+ ACPI_ERDT_TYPE_CACD = 1,
+ ACPI_ERDT_TYPE_DACD = 2,
+ ACPI_ERDT_TYPE_CMRC = 3,
+ ACPI_ERDT_TYPE_MMRC = 4,
+ ACPI_ERDT_TYPE_MARC = 5,
+ ACPI_ERDT_TYPE_CARC = 6,
+ ACPI_ERDT_TYPE_CMRD = 7,
+ ACPI_ERDT_TYPE_IBRD = 8,
+ ACPI_ERDT_TYPE_IBAD = 9,
+ ACPI_ERDT_TYPE_CARD = 10,
+ ACPI_ERDT_TYPE_RESERVED = 11 /* 11 and above are reserved */
+};
+
+/*
+ * ERDT Subtables, correspond to Type in struct acpi_subtbl_hdr_16
+ */
+
+/* 0: RMDD - Resource Management Domain Description */
+
+struct acpi_erdt_rmdd {
+ struct acpi_subtbl_hdr_16 header;
+ u16 flags;
+ u16 IO_l3_slices; /* Number of slices in IO cache */
+ u8 IO_l3_sets; /* Number of sets in IO cache */
+ u8 IO_l3_ways; /* Number of ways in IO cache */
+ u64 reserved;
+ u16 domain_id; /* Unique domain ID */
+ u32 max_rmid; /* Maximun RMID supported */
+ u64 creg_base; /* Control Register Base Address */
+ u16 creg_size; /* Control Register Size (4K pages) */
+ u8 rmdd_structs[];
+};
+
+/* 1: CACD - CPU Agent Collection Description */
+
+struct acpi_erdt_cacd {
+ struct acpi_subtbl_hdr_16 header;
+ u16 reserved;
+ u16 domain_id; /* Unique domain ID */
+ u32 X2APICIDS[];
+};
+
+/* 2: DACD - Device Agent Collection Description */
+
+struct acpi_erdt_dacd {
+ struct acpi_subtbl_hdr_16 header;
+ u16 reserved;
+ u16 domain_id; /* Unique domain ID */
+ u8 dev_paths[];
+};
+
+struct acpi_erdt_dacd_dev_paths {
+ struct acpi_subtable_header header;
+ u16 segment;
+ u8 reserved;
+ u8 start_bus;
+ u8 path[];
+};
+
+/* 3: CMRC - Cache Monitoring Registers for CPU Agents */
+
+struct acpi_erdt_cmrc {
+ struct acpi_subtbl_hdr_16 header;
+ u32 reserved1;
+ u32 flags;
+ u8 index_fn;
+ u8 reserved2[11];
+ u64 cmt_reg_base;
+ u32 cmt_reg_size;
+ u16 clump_size;
+ u16 clump_stride;
+ u64 up_scale;
+};
+
+/* 4: MMRC - Memory-bandwidth Monitoring Registers for CPU Agents */
+
+struct acpi_erdt_mmrc {
+ struct acpi_subtbl_hdr_16 header;
+ u32 reserved1;
+ u32 flags;
+ u8 index_fn;
+ u8 reserved2[11];
+ u64 reg_base;
+ u32 reg_size;
+ u8 counter_width;
+ u64 up_scale;
+ u8 reserved3[7];
+ u32 corr_factor_list_len;
+ u32 corr_factor_list[];
+};
+
+/* 5: MARC - Memory-bandwidth Allocation Registers for CPU Agents */
+
+struct acpi_erdt_marc {
+ struct acpi_subtbl_hdr_16 header;
+ u16 reserved1;
+ u16 flags;
+ u8 index_fn;
+ u8 reserved2[7];
+ u64 reg_base_opt;
+ u64 reg_base_min;
+ u64 reg_base_max;
+ u32 mba_reg_size;
+ u32 mba_ctrl_range;
+};
+
+/* 6: CARC - Cache Allocation Registers for CPU Agents */
+
+struct acpi_erdt_carc {
+ struct acpi_subtbl_hdr_16 header;
+};
+
+/* 7: CMRD - Cache Monitoring Registers for Device Agents */
+
+struct acpi_erdt_cmrd {
+ struct acpi_subtbl_hdr_16 header;
+ u32 reserved1;
+ u32 flags;
+ u8 index_fn;
+ u8 reserved2[11];
+ u64 reg_base;
+ u32 reg_size;
+ u16 cmt_reg_off;
+ u16 cmt_clump_size;
+ u64 up_scale;
+};
+
+/* 8: IBRD - Cache Monitoring Registers for Device Agents */
+
+struct acpi_erdt_ibrd {
+ struct acpi_subtbl_hdr_16 header;
+ u32 reserved1;
+ u32 flags;
+ u8 index_fn;
+ u8 reserved2[11];
+ u64 reg_base;
+ u32 reg_size;
+ u16 total_bw_offset;
+ u16 Iomiss_bw_offset;
+ u16 total_bw_clump;
+ u16 Iomiss_bw_clump;
+ u8 reserved3[7];
+ u8 counter_width;
+ u64 up_scale;
+ u32 corr_factor_list_len;
+ u32 corr_factor_list[];
+};
+
+/* 9: IBAD - IO bandwidth Allocation Registers for device agents */
+
+struct acpi_erdt_ibad {
+ struct acpi_subtbl_hdr_16 header;
+};
+
+/* 10: CARD - IO bandwidth Allocation Registers for Device Agents */
+
+struct acpi_erdt_card {
+ struct acpi_subtbl_hdr_16 header;
+ u32 reserved1;
+ u32 flags;
+ u32 contention_mask;
+ u8 index_fn;
+ u8 reserved2[7];
+ u64 reg_base;
+ u32 reg_size;
+ u16 cat_reg_offset;
+ u16 cat_reg_block_size;
+};
+
/*******************************************************************************
*
* IORT - IO Remapping Table