Add a 32-bit arm version of reset_pmu(). Add all the necessary register
definitions as well.
Signed-off-by: Ricardo Koller <ricarkol@xxxxxxxxxx>
---
arm/pmu.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arm/pmu.c b/arm/pmu.c
index 4c601b05..a5260178 100644
--- a/arm/pmu.c
+++ b/arm/pmu.c
@@ -93,7 +93,10 @@ static struct pmu pmu;
#define PMSELR __ACCESS_CP15(c9, 0, c12, 5)
#define PMXEVTYPER __ACCESS_CP15(c9, 0, c13, 1)
#define PMCNTENSET __ACCESS_CP15(c9, 0, c12, 1)
+#define PMCNTENCLR __ACCESS_CP15(c9, 0, c12, 2)
+#define PMOVSR __ACCESS_CP15(c9, 0, c12, 3)
#define PMCCNTR32 __ACCESS_CP15(c9, 0, c13, 0)
+#define PMINTENCLR __ACCESS_CP15(c9, 0, c14, 2)
#define PMCCNTR64 __ACCESS_CP15_64(0, c9)
static inline uint32_t get_id_dfr0(void) { return read_sysreg(ID_DFR0); }
@@ -145,6 +148,19 @@ static inline void precise_instrs_loop(int loop, uint32_t pmcr)
: "cc");
}
+static void pmu_reset(void)
+{
+ /* reset all counters, counting disabled at PMCR level*/
+ set_pmcr(pmu.pmcr_ro | PMU_PMCR_LC | PMU_PMCR_C | PMU_PMCR_P);
+ /* Disable all counters */
+ write_sysreg(ALL_SET, PMCNTENCLR);
+ /* clear overflow reg */
+ write_sysreg(ALL_SET, PMOVSR);
+ /* disable overflow interrupts on all counters */
+ write_sysreg(ALL_SET, PMINTENCLR);
+ isb();
+}
+
/* event counter tests only implemented for aarch64 */
static void test_event_introspection(void) {}
static void test_event_counter_config(void) {}
--
2.37.1.559.g78731f0fdb-goog
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