tools/testing/selftests/kvm/include/riscv/sbi.h

Source file repositories/reference/linux-study-clean/tools/testing/selftests/kvm/include/riscv/sbi.h

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/kvm/include/riscv/sbi.h
Extension
.h
Size
4682 bytes
Lines
179
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 riscv_pmu_snapshot_data {
	u64 ctr_overflow_mask;
	u64 ctr_values[64];
	u64 reserved[447];
};

struct sbiret {
	long error;
	long value;
};

/** General pmu event codes specified in SBI PMU extension */
enum sbi_pmu_hw_generic_events_t {
	SBI_PMU_HW_NO_EVENT			= 0,
	SBI_PMU_HW_CPU_CYCLES			= 1,
	SBI_PMU_HW_INSTRUCTIONS			= 2,
	SBI_PMU_HW_CACHE_REFERENCES		= 3,
	SBI_PMU_HW_CACHE_MISSES			= 4,
	SBI_PMU_HW_BRANCH_INSTRUCTIONS		= 5,
	SBI_PMU_HW_BRANCH_MISSES		= 6,
	SBI_PMU_HW_BUS_CYCLES			= 7,
	SBI_PMU_HW_STALLED_CYCLES_FRONTEND	= 8,
	SBI_PMU_HW_STALLED_CYCLES_BACKEND	= 9,
	SBI_PMU_HW_REF_CPU_CYCLES		= 10,

	SBI_PMU_HW_GENERAL_MAX,
};

enum sbi_pmu_fw_generic_events_t {
	SBI_PMU_FW_MISALIGNED_LOAD	= 0,
	SBI_PMU_FW_MISALIGNED_STORE	= 1,
	SBI_PMU_FW_ACCESS_LOAD		= 2,
	SBI_PMU_FW_ACCESS_STORE		= 3,
	SBI_PMU_FW_ILLEGAL_INSN		= 4,
	SBI_PMU_FW_SET_TIMER		= 5,
	SBI_PMU_FW_IPI_SENT		= 6,
	SBI_PMU_FW_IPI_RCVD		= 7,
	SBI_PMU_FW_FENCE_I_SENT		= 8,
	SBI_PMU_FW_FENCE_I_RCVD		= 9,
	SBI_PMU_FW_SFENCE_VMA_SENT	= 10,
	SBI_PMU_FW_SFENCE_VMA_RCVD	= 11,
	SBI_PMU_FW_SFENCE_VMA_ASID_SENT	= 12,
	SBI_PMU_FW_SFENCE_VMA_ASID_RCVD	= 13,

	SBI_PMU_FW_HFENCE_GVMA_SENT	= 14,
	SBI_PMU_FW_HFENCE_GVMA_RCVD	= 15,
	SBI_PMU_FW_HFENCE_GVMA_VMID_SENT = 16,
	SBI_PMU_FW_HFENCE_GVMA_VMID_RCVD = 17,

	SBI_PMU_FW_HFENCE_VVMA_SENT	= 18,
	SBI_PMU_FW_HFENCE_VVMA_RCVD	= 19,
	SBI_PMU_FW_HFENCE_VVMA_ASID_SENT = 20,
	SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD = 21,
	SBI_PMU_FW_MAX,
};

/* SBI PMU event types */
enum sbi_pmu_event_type {
	SBI_PMU_EVENT_TYPE_HW = 0x0,
	SBI_PMU_EVENT_TYPE_CACHE = 0x1,
	SBI_PMU_EVENT_TYPE_RAW = 0x2,
	SBI_PMU_EVENT_TYPE_RAW_V2 = 0x3,
	SBI_PMU_EVENT_TYPE_FW = 0xf,
};

/* SBI PMU counter types */
enum sbi_pmu_ctr_type {
	SBI_PMU_CTR_TYPE_HW = 0x0,
	SBI_PMU_CTR_TYPE_FW,
};

/* Flags defined for config matching function */
#define SBI_PMU_CFG_FLAG_SKIP_MATCH	BIT(0)
#define SBI_PMU_CFG_FLAG_CLEAR_VALUE	BIT(1)
#define SBI_PMU_CFG_FLAG_AUTO_START	BIT(2)
#define SBI_PMU_CFG_FLAG_SET_VUINH	BIT(3)
#define SBI_PMU_CFG_FLAG_SET_VSINH	BIT(4)
#define SBI_PMU_CFG_FLAG_SET_UINH	BIT(5)
#define SBI_PMU_CFG_FLAG_SET_SINH	BIT(6)
#define SBI_PMU_CFG_FLAG_SET_MINH	BIT(7)

/* Flags defined for counter start function */
#define SBI_PMU_START_FLAG_SET_INIT_VALUE BIT(0)
#define SBI_PMU_START_FLAG_INIT_SNAPSHOT BIT(1)

/* Flags defined for counter stop function */
#define SBI_PMU_STOP_FLAG_RESET BIT(0)
#define SBI_PMU_STOP_FLAG_TAKE_SNAPSHOT BIT(1)

struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,

Annotation

Implementation Notes