/* SPDX-License-Identifier: GPL-2.0-only */
/*
* ARM DynamIQ Shared Unit (DSU) PMU Low level register access routines.
*
* Copyright (C) ARM Limited, 2017.
*
* Author: Suzuki K Poulose <suzuki.poulose@arm.com>
*/
#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();
}
static inline void __dsu_pmu_counter_interrupt_enable(int counter)
{
write_sysreg_s(BIT(counter), CLUSTERPMINTENSET_EL1);
isb();
}
static inline void __dsu_pmu_counter_interrupt_disable(int counter)
{
write_sysreg_s(BIT(counter), CLUSTERPMINTENCLR_EL1);
isb();
}
static inline u32 __dsu_pmu_read_pmceid(int n)
{
switch (n) {
case 0 :
return read_sysreg_s(CLUSTERPMCEID0_EL1);
case 1 :
return read_sysreg_s(CLUSTERPMCEID1_EL1);
default :
BUILD_BUG();
return 0 ;
}
}
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(vorverarbeitet am 2026-06-08)
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