1 files changed, 105 insertions, 0 deletions
diff --git a/arch/x86/events/intel/uncore_discovery.h b/arch/x86/events/intel/uncore_discovery.h
new file mode 100644
index 000000000000..95afa393145a
--- /dev/null
+++ b/arch/x86/events/intel/uncore_discovery.h
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Generic device ID of a discovery table device */
+#define UNCORE_DISCOVERY_TABLE_DEVICE		0x09a7
+/* Capability ID for a discovery table device */
+#define UNCORE_EXT_CAP_ID_DISCOVERY		0x23
+/* First DVSEC offset */
+#define UNCORE_DISCOVERY_DVSEC_OFFSET		0x8
+/* Mask of the supported discovery entry type */
+#define UNCORE_DISCOVERY_DVSEC_ID_MASK		0xffff
+/* PMON discovery entry type ID */
+#define UNCORE_DISCOVERY_DVSEC_ID_PMON		0x1
+/* Second DVSEC offset */
+#define UNCORE_DISCOVERY_DVSEC2_OFFSET		0xc
+/* Mask of the discovery table BAR offset */
+#define UNCORE_DISCOVERY_DVSEC2_BIR_MASK	0x7
+/* Discovery table BAR base offset */
+#define UNCORE_DISCOVERY_BIR_BASE		0x10
+/* Discovery table BAR step */
+#define UNCORE_DISCOVERY_BIR_STEP		0x4
+/* Mask of the discovery table offset */
+#define UNCORE_DISCOVERY_MASK			0xf
+/* Global discovery table size */
+#define UNCORE_DISCOVERY_GLOBAL_MAP_SIZE	0x20
+
+#define uncore_discovery_invalid_unit(unit)			\
+	(!unit.table1 || !unit.ctl || !unit.table3 ||	\
+	 unit.table1 == -1ULL || unit.ctl == -1ULL ||	\
+	 unit.table3 == -1ULL)
+
+enum uncore_access_type {
+	UNCORE_ACCESS_MSR	= 0,
+	UNCORE_ACCESS_MMIO,
+	UNCORE_ACCESS_PCI,
+
+	UNCORE_ACCESS_MAX,
+};
+
+struct uncore_global_discovery {
+	union {
+		u64	table1;
+		struct {
+			u64	type : 8,
+				stride : 8,
+				max_units : 10,
+				__reserved_1 : 36,
+				access_type : 2;
+		};
+	};
+
+	u64	ctl;		/* Global Control Address */
+
+	union {
+		u64	table3;
+		struct {
+			u64	status_offset : 8,
+				num_status : 16,
+				__reserved_2 : 40;
+		};
+	};
+};
+
+struct uncore_unit_discovery {
+	union {
+		u64	table1;
+		struct {
+			u64	num_regs : 8,
+				ctl_offset : 8,
+				bit_width : 8,
+				ctr_offset : 8,
+				status_offset : 8,
+				__reserved_1 : 22,
+				access_type : 2;
+			};
+		};
+
+	u64	ctl;		/* Unit Control Address */
+
+	union {
+		u64	table3;
+		struct {
+			u64	box_type : 16,
+				box_id : 16,
+				__reserved_2 : 32;
+		};
+	};
+};
+
+struct intel_uncore_discovery_type {
+	struct rb_node	node;
+	enum uncore_access_type	access_type;
+	u64		box_ctrl;	/* Unit ctrl addr of the first box */
+	u64		*box_ctrl_die;	/* Unit ctrl addr of the first box of each die */
+	u16		type;		/* Type ID of the uncore block */
+	u8		num_counters;
+	u8		counter_width;
+	u8		ctl_offset;	/* Counter Control 0 offset */
+	u8		ctr_offset;	/* Counter 0 offset */
+	u16		num_boxes;	/* number of boxes for the uncore block */
+	unsigned int	*ids;		/* Box IDs */
+	unsigned int	*box_offset;	/* Box offset */
+};
+
+bool intel_uncore_has_discovery_tables(void);
+void intel_uncore_clear_discovery_tables(void);