linux-zen-server/arch/x86/events/intel/uncore_discovery.h

/* 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
/* Global discovery table size */
#define UNCORE_DISCOVERY_GLOBAL_MAP_SIZE	0x20

#define UNCORE_DISCOVERY_PCI_DOMAIN_OFFSET	28
#define UNCORE_DISCOVERY_PCI_DOMAIN(data)			\
		((data >> UNCORE_DISCOVERY_PCI_DOMAIN_OFFSET) & 0x7)
#define UNCORE_DISCOVERY_PCI_BUS_OFFSET		20
#define UNCORE_DISCOVERY_PCI_BUS(data)				\
		((data >> UNCORE_DISCOVERY_PCI_BUS_OFFSET) & 0xff)
#define UNCORE_DISCOVERY_PCI_DEVFN_OFFSET	12
#define UNCORE_DISCOVERY_PCI_DEVFN(data)			\
		((data >> UNCORE_DISCOVERY_PCI_DEVFN_OFFSET) & 0xff)
#define UNCORE_DISCOVERY_PCI_BOX_CTRL(data)	(data & 0xfff)


#define uncore_discovery_invalid_unit(unit)			\
	(!unit.table1 || !unit.ctl || \
	 unit.table1 == -1ULL || unit.ctl == -1ULL ||	\
	 unit.table3 == -1ULL)

#define GENERIC_PMON_CTL_EV_SEL_MASK	0x000000ff
#define GENERIC_PMON_CTL_UMASK_MASK	0x0000ff00
#define GENERIC_PMON_CTL_EDGE_DET	(1 << 18)
#define GENERIC_PMON_CTL_INVERT		(1 << 23)
#define GENERIC_PMON_CTL_TRESH_MASK	0xff000000
#define GENERIC_PMON_RAW_EVENT_MASK	(GENERIC_PMON_CTL_EV_SEL_MASK | \
					 GENERIC_PMON_CTL_UMASK_MASK | \
					 GENERIC_PMON_CTL_EDGE_DET | \
					 GENERIC_PMON_CTL_INVERT | \
					 GENERIC_PMON_CTL_TRESH_MASK)

#define GENERIC_PMON_BOX_CTL_FRZ	(1 << 0)
#define GENERIC_PMON_BOX_CTL_RST_CTRL	(1 << 8)
#define GENERIC_PMON_BOX_CTL_RST_CTRS	(1 << 9)
#define GENERIC_PMON_BOX_CTL_INT	(GENERIC_PMON_BOX_CTL_RST_CTRL | \
					 GENERIC_PMON_BOX_CTL_RST_CTRS)

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(int *ignore);
void intel_uncore_clear_discovery_tables(void);
void intel_uncore_generic_uncore_cpu_init(void);
int intel_uncore_generic_uncore_pci_init(void);
void intel_uncore_generic_uncore_mmio_init(void);

void intel_generic_uncore_msr_init_box(struct intel_uncore_box *box);
void intel_generic_uncore_msr_disable_box(struct intel_uncore_box *box);
void intel_generic_uncore_msr_enable_box(struct intel_uncore_box *box);

void intel_generic_uncore_mmio_init_box(struct intel_uncore_box *box);
void intel_generic_uncore_mmio_disable_box(struct intel_uncore_box *box);
void intel_generic_uncore_mmio_enable_box(struct intel_uncore_box *box);
void intel_generic_uncore_mmio_disable_event(struct intel_uncore_box *box,
					     struct perf_event *event);
void intel_generic_uncore_mmio_enable_event(struct intel_uncore_box *box,
					    struct perf_event *event);

void intel_generic_uncore_pci_init_box(struct intel_uncore_box *box);
void intel_generic_uncore_pci_disable_box(struct intel_uncore_box *box);
void intel_generic_uncore_pci_enable_box(struct intel_uncore_box *box);
void intel_generic_uncore_pci_disable_event(struct intel_uncore_box *box,
					    struct perf_event *event);
u64 intel_generic_uncore_pci_read_counter(struct intel_uncore_box *box,
					  struct perf_event *event);

struct intel_uncore_type **
intel_uncore_generic_init_uncores(enum uncore_access_type type_id, int num_extra);