arch/arm64/include/asm/arm_dsu_pmu.h

Source file repositories/reference/linux-study-clean/arch/arm64/include/asm/arm_dsu_pmu.h

File Facts

System
Linux kernel
Corpus path
arch/arm64/include/asm/arm_dsu_pmu.h
Extension
.h
Size
3007 bytes
Lines
127
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/bitops.h>
#include <linux/build_bug.h>
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/barrier.h>
#include <asm/sysreg.h>


#define CLUSTERPMCR_EL1			sys_reg(3, 0, 15, 5, 0)
#define CLUSTERPMCNTENSET_EL1		sys_reg(3, 0, 15, 5, 1)
#define CLUSTERPMCNTENCLR_EL1		sys_reg(3, 0, 15, 5, 2)
#define CLUSTERPMOVSSET_EL1		sys_reg(3, 0, 15, 5, 3)
#define CLUSTERPMOVSCLR_EL1		sys_reg(3, 0, 15, 5, 4)
#define CLUSTERPMSELR_EL1		sys_reg(3, 0, 15, 5, 5)
#define CLUSTERPMINTENSET_EL1		sys_reg(3, 0, 15, 5, 6)
#define CLUSTERPMINTENCLR_EL1		sys_reg(3, 0, 15, 5, 7)
#define CLUSTERPMCCNTR_EL1		sys_reg(3, 0, 15, 6, 0)
#define CLUSTERPMXEVTYPER_EL1		sys_reg(3, 0, 15, 6, 1)
#define CLUSTERPMXEVCNTR_EL1		sys_reg(3, 0, 15, 6, 2)
#define CLUSTERPMMDCR_EL1		sys_reg(3, 0, 15, 6, 3)
#define CLUSTERPMCEID0_EL1		sys_reg(3, 0, 15, 6, 4)
#define CLUSTERPMCEID1_EL1		sys_reg(3, 0, 15, 6, 5)

static inline u32 __dsu_pmu_read_pmcr(void)
{
	return read_sysreg_s(CLUSTERPMCR_EL1);
}

static inline void __dsu_pmu_write_pmcr(u32 val)
{
	write_sysreg_s(val, CLUSTERPMCR_EL1);
	isb();
}

static inline u32 __dsu_pmu_get_reset_overflow(void)
{
	u32 val = read_sysreg_s(CLUSTERPMOVSCLR_EL1);
	/* Clear the bit */
	write_sysreg_s(val, CLUSTERPMOVSCLR_EL1);
	isb();
	return val;
}

static inline void __dsu_pmu_select_counter(int counter)
{
	write_sysreg_s(counter, CLUSTERPMSELR_EL1);
	isb();
}

static inline u64 __dsu_pmu_read_counter(int counter)
{
	__dsu_pmu_select_counter(counter);
	return read_sysreg_s(CLUSTERPMXEVCNTR_EL1);
}

static inline void __dsu_pmu_write_counter(int counter, u64 val)
{
	__dsu_pmu_select_counter(counter);
	write_sysreg_s(val, CLUSTERPMXEVCNTR_EL1);
	isb();
}

static inline void __dsu_pmu_set_event(int counter, u32 event)
{
	__dsu_pmu_select_counter(counter);
	write_sysreg_s(event, CLUSTERPMXEVTYPER_EL1);
	isb();
}

static inline u64 __dsu_pmu_read_pmccntr(void)
{
	return read_sysreg_s(CLUSTERPMCCNTR_EL1);
}

static inline void __dsu_pmu_write_pmccntr(u64 val)
{
	write_sysreg_s(val, CLUSTERPMCCNTR_EL1);
	isb();
}

static inline void __dsu_pmu_disable_counter(int counter)
{
	write_sysreg_s(BIT(counter), CLUSTERPMCNTENCLR_EL1);
	isb();
}

static inline void __dsu_pmu_enable_counter(int counter)
{
	write_sysreg_s(BIT(counter), CLUSTERPMCNTENSET_EL1);
	isb();

Annotation

Implementation Notes