qcacmn: Add per CPU interrupt statistics

Add per CPU per copy engine interrupt statistics.

Change-Id: I1619f0db3314ae3d915284459f2b191f31fc2190
CRs-Fixed: 1017437

3 files changed, 66 insertions, 0 deletions

diff --git a/hif/src/ce/ce_main.h b/hif/src/ce/ce_main.h
index 6c3a67f91937..3023be80fe4c 100644
--- a/hif/src/ce/ce_main.h
+++ b/hif/src/ce/ce_main.h
@@ -31,6 +31,7 @@
 #include "qdf_atomic.h"
 #include "qdf_lock.h"
 #include "hif_main.h"
+#include "qdf_util.h"
 
 #define CE_HTT_T2H_MSG 1
 #define CE_HTT_H2T_MSG 4
@@ -111,6 +112,10 @@ struct ce_tasklet_entry {
 	void *hif_ce_state;
 };
 
+struct ce_intr_stats {
+	uint32_t ce_per_cpu[CE_COUNT_MAX][QDF_MAX_AVAILABLE_CPU];
+};
+
 struct HIF_CE_state {
 	struct hif_softc ol_sc;
 	bool started;
@@ -135,6 +140,7 @@ struct HIF_CE_state {
 
 	/* Copy Engine used for Diagnostic Accesses */
 	struct CE_handle *ce_diag;
+	struct ce_intr_stats stats;
 };
 
 /*
diff --git a/hif/src/ce/ce_tasklet.c b/hif/src/ce/ce_tasklet.c
index 5c692cc6a03d..c03a6958479f 100644
--- a/hif/src/ce/ce_tasklet.c
+++ b/hif/src/ce/ce_tasklet.c
@@ -257,6 +257,63 @@ static irqreturn_t hif_snoc_interrupt_handler(int irq, void *context)
 }
 
 /**
+ * hif_ce_increment_interrupt_count() - update ce stats
+ * @hif_ce_state: ce state
+ * @ce_id: ce id
+ *
+ * Return: none
+ */
+static inline void
+hif_ce_increment_interrupt_count(struct HIF_CE_state *hif_ce_state, int ce_id)
+{
+	int cpu_id = qdf_get_cpu();
+
+	hif_ce_state->stats.ce_per_cpu[ce_id][cpu_id]++;
+}
+
+/**
+ * hif_display_ce_stats() - display ce stats
+ * @hif_ce_state: ce state
+ *
+ * Return: none
+ */
+void hif_display_ce_stats(struct HIF_CE_state *hif_ce_state)
+{
+#define STR_SIZE 128
+	uint8_t i, j, pos;
+	char str_buffer[STR_SIZE];
+	int size, ret;
+
+	qdf_print("CE interrupt statistics:");
+	for (i = 0; i < CE_COUNT_MAX; i++) {
+		size = STR_SIZE;
+		pos = 0;
+		qdf_print("CE id: %d", i);
+		for (j = 0; j < QDF_MAX_AVAILABLE_CPU; j++) {
+			ret = snprintf(str_buffer + pos, size, "[%d]: %d",
+				j, hif_ce_state->stats.ce_per_cpu[i][j]);
+			if (ret <= 0 || ret >= size)
+				break;
+			size -= ret;
+			pos += ret;
+		}
+		qdf_print("%s", str_buffer);
+	}
+#undef STR_SIZE
+}
+
+/**
+ * hif_clear_ce_stats() - clear ce stats
+ * @hif_ce_state: ce state
+ *
+ * Return: none
+ */
+void hif_clear_ce_stats(struct HIF_CE_state *hif_ce_state)
+{
+	qdf_mem_zero(&hif_ce_state->stats, sizeof(struct ce_intr_stats));
+}
+
+/**
  * ce_dispatch_interrupt() - dispatch an interrupt to a processing context
  * @ce_id: ce_id
  * @tasklet_entry: context
@@ -283,6 +340,7 @@ irqreturn_t ce_dispatch_interrupt(int ce_id,
 	hif_irq_disable(scn, ce_id);
 	qdf_atomic_inc(&scn->active_tasklet_cnt);
 	hif_record_ce_desc_event(scn, ce_id, HIF_IRQ_EVENT, NULL, NULL, 0);
+	hif_ce_increment_interrupt_count(hif_ce_state, ce_id);
 	if (hif_napi_enabled(hif_hdl, ce_id))
 		hif_napi_schedule(hif_hdl, ce_id);
 	else
diff --git a/hif/src/ce/ce_tasklet.h b/hif/src/ce/ce_tasklet.h
index d2fa22c64b33..1b158aedfde7 100644
--- a/hif/src/ce/ce_tasklet.h
+++ b/hif/src/ce/ce_tasklet.h
@@ -35,4 +35,6 @@ QDF_STATUS ce_register_irq(struct HIF_CE_state *hif_ce_state, uint32_t mask);
 QDF_STATUS ce_unregister_irq(struct HIF_CE_state *hif_ce_state, uint32_t mask);
 irqreturn_t ce_dispatch_interrupt(int irq,
 				  struct ce_tasklet_entry *tasklet_entry);
+void hif_display_ce_stats(struct HIF_CE_state *hif_ce_state);
+void hif_clear_ce_stats(struct HIF_CE_state *hif_ce_state);
 #endif /* __CE_TASKLET_H__ */