tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h

Source file repositories/reference/linux-study-clean/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h

File Facts

System
Linux kernel
Corpus path
tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
Extension
.h
Size
6200 bytes
Lines
191
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct arm_spe_pkt {
	enum arm_spe_pkt_type	type;
	unsigned char		index;
	uint64_t		payload;
};

/* Short header (HEADER0) and extended header (HEADER1) */
#define SPE_HEADER0_PAD				0x0
#define SPE_HEADER0_END				0x1
#define SPE_HEADER0_TIMESTAMP			0x71
/* Mask for event & data source */
#define SPE_HEADER0_MASK1			(GENMASK_ULL(7, 6) | GENMASK_ULL(3, 0))
#define SPE_HEADER0_EVENTS			0x42
#define SPE_HEADER0_SOURCE			0x43
/* Mask for context & operation */
#define SPE_HEADER0_MASK2			GENMASK_ULL(7, 2)
#define SPE_HEADER0_CONTEXT			0x64
#define SPE_HEADER0_OP_TYPE			0x48
/* Mask for extended format */
#define SPE_HEADER0_EXTENDED			0x20
/* Mask for address & counter */
#define SPE_HEADER0_MASK3			GENMASK_ULL(7, 3)
#define SPE_HEADER0_ADDRESS			0xb0
#define SPE_HEADER0_COUNTER			0x98
#define SPE_HEADER1_ALIGNMENT			0x0

#define SPE_HDR_SHORT_INDEX(h)			((h) & GENMASK_ULL(2, 0))
#define SPE_HDR_EXTENDED_INDEX(h0, h1)		(((h0) & GENMASK_ULL(1, 0)) << 3 | \
						 SPE_HDR_SHORT_INDEX(h1))

/* Address packet header */
#define SPE_ADDR_PKT_HDR_INDEX_INS		0x0
#define SPE_ADDR_PKT_HDR_INDEX_BRANCH		0x1
#define SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT	0x2
#define SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS	0x3
#define SPE_ADDR_PKT_HDR_INDEX_PREV_BRANCH	0x4

/* Address packet payload */
#define SPE_ADDR_PKT_ADDR_BYTE7_SHIFT		56
#define SPE_ADDR_PKT_ADDR_GET_BYTES_0_6(v)	((v) & GENMASK_ULL(55, 0))
#define SPE_ADDR_PKT_ADDR_GET_BYTE_6(v)		(((v) & GENMASK_ULL(55, 48)) >> 48)

#define SPE_ADDR_PKT_GET_NS(v)			(((v) & BIT_ULL(63)) >> 63)
#define SPE_ADDR_PKT_GET_EL(v)			(((v) & GENMASK_ULL(62, 61)) >> 61)
#define SPE_ADDR_PKT_GET_CH(v)			(((v) & BIT_ULL(62)) >> 62)
#define SPE_ADDR_PKT_GET_PAT(v)			(((v) & GENMASK_ULL(59, 56)) >> 56)

#define SPE_ADDR_PKT_EL0			0
#define SPE_ADDR_PKT_EL1			1
#define SPE_ADDR_PKT_EL2			2
#define SPE_ADDR_PKT_EL3			3

/* Context packet header */
#define SPE_CTX_PKT_HDR_INDEX(h)		((h) & GENMASK_ULL(1, 0))

/* Counter packet header */
#define SPE_CNT_PKT_HDR_INDEX_TOTAL_LAT		0x0
#define SPE_CNT_PKT_HDR_INDEX_ISSUE_LAT		0x1
#define SPE_CNT_PKT_HDR_INDEX_TRANS_LAT		0x2

/* Event packet payload */
enum arm_spe_events {
	EV_EXCEPTION_GEN	= 0,
	EV_RETIRED		= 1,
	EV_L1D_ACCESS		= 2,
	EV_L1D_REFILL		= 3,
	EV_TLB_ACCESS		= 4,
	EV_TLB_WALK		= 5,
	EV_NOT_TAKEN		= 6,
	EV_MISPRED		= 7,
	EV_LLC_ACCESS		= 8,
	EV_LLC_MISS		= 9,
	EV_REMOTE_ACCESS	= 10,
	EV_ALIGNMENT		= 11,
	EV_TRANSACTIONAL	= 16,
	EV_PARTIAL_PREDICATE	= 17,
	EV_EMPTY_PREDICATE	= 18,
	EV_L2D_ACCESS		= 19,
	EV_L2D_MISS		= 20,
	EV_CACHE_DATA_MODIFIED	= 21,
	EV_RECENTLY_FETCHED	= 22,
	EV_DATA_SNOOPED		= 23,
	EV_STREAMING_SVE_MODE	= 24,
	EV_SMCU			= 25,
};

/* Operation packet header */
#define SPE_OP_PKT_HDR_CLASS(h)			((h) & GENMASK_ULL(1, 0))
#define SPE_OP_PKT_HDR_CLASS_OTHER		0x0
#define SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC	0x1

Annotation

Implementation Notes