The user can set event and counter in cmdline and the driver need to parse
it using 'config' attr value. This will add macro definitions to avoid
hard-code in driver.
Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
---
Changes in v4:
- new patch
Changes in v5:
- move this patch earlier
---
drivers/perf/fsl_imx9_ddr_perf.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/perf/fsl_imx9_ddr_perf.c b/drivers/perf/fsl_imx9_ddr_perf.c
index 2cd5bcf1d3d1..35e422083948 100644
--- a/drivers/perf/fsl_imx9_ddr_perf.c
+++ b/drivers/perf/fsl_imx9_ddr_perf.c
@@ -42,6 +42,11 @@
#define NUM_COUNTERS 11
#define CYCLES_COUNTER 0
+#define CONFIG_EVENT_MASK 0x00FF
+#define CONFIG_EVENT_OFFSET 0
+#define CONFIG_COUNTER_MASK 0xFF00
+#define CONFIG_COUNTER_OFFSET 8
+
#define to_ddr_pmu(p) container_of(p, struct ddr_pmu, pmu)
#define DDR_PERF_DEV_NAME "imx9_ddr"
@@ -361,8 +366,10 @@ static void ddr_perf_counter_local_config(struct ddr_pmu *pmu, int config,
int counter, bool enable)
{
u32 ctrl_a;
+ int event;
ctrl_a = readl_relaxed(pmu->base + PMLCA(counter));
+ event = (config & CONFIG_EVENT_MASK) >> CONFIG_EVENT_OFFSET;
if (enable) {
ctrl_a |= PMLCA_FC;
@@ -374,7 +381,7 @@ static void ddr_perf_counter_local_config(struct ddr_pmu *pmu, int config,
ctrl_a &= ~PMLCA_FC;
ctrl_a |= PMLCA_CE;
ctrl_a &= ~FIELD_PREP(PMLCA_EVENT, 0x7F);
- ctrl_a |= FIELD_PREP(PMLCA_EVENT, (config & 0x000000FF));
+ ctrl_a |= FIELD_PREP(PMLCA_EVENT, event);
writel(ctrl_a, pmu->base + PMLCA(counter));
} else {
/* Freeze counter. */
@@ -388,8 +395,8 @@ static void imx93_ddr_perf_monitor_config(struct ddr_pmu *pmu, int cfg, int cfg1
u32 pmcfg1, pmcfg2;
int event, counter;
- event = cfg & 0x000000FF;
- counter = (cfg & 0x0000FF00) >> 8;
+ event = (cfg & CONFIG_EVENT_MASK) >> CONFIG_EVENT_OFFSET;
+ counter = (cfg & CONFIG_COUNTER_MASK) >> CONFIG_COUNTER_OFFSET;
pmcfg1 = readl_relaxed(pmu->base + PMCFG1);
@@ -491,7 +498,7 @@ static int ddr_perf_event_add(struct perf_event *event, int flags)
int cfg2 = event->attr.config2;
int counter;
- counter = (cfg & 0x0000FF00) >> 8;
+ counter = (cfg & CONFIG_COUNTER_MASK) >> CONFIG_COUNTER_OFFSET;
pmu->events[counter] = event;
pmu->active_events++;
--
2.34.1
