qcacmn: Add support to copy buffers posted to CE SRC

Enable data field in hif_ce_desc_event structure
and copy the buffer posted to CE SRC ring. This is
done to validate the contents of the buffer.

Change-Id: I6745422f6c3a8ac013bb35032056f041d2216d89
CRs-Fixed: 2540707

hif/src/ce/ce_internal.h

@@ -554,8 +554,8 @@ int hif_get_wake_ce_id(struct hif_softc *scn, uint8_t *ce_id);
  * @descriptor: descriptor enqueued or dequeued
  * @memory: virtual address that was used
  * @index: location of the descriptor in the ce ring;
- * @data: data pointed by descriptor
  * @actual_data_len: length of the data
+ * @data: data pointed by descriptor
  */
 struct hif_ce_desc_event {
 	int index;
@@ -570,8 +570,8 @@ struct hif_ce_desc_event {
 #endif
 	void *memory;
 #ifdef HIF_CE_DEBUG_DATA_BUF
-	uint8_t *data;
 	size_t actual_data_len;
+	uint8_t *data;
 #endif /* HIF_CE_DEBUG_DATA_BUF */
 
 #ifdef HIF_CONFIG_SLUB_DEBUG_ON
@@ -634,6 +634,16 @@ void hif_record_ce_srng_desc_event(struct hif_softc *scn, int ce_id,
  * Return:
  */
 void hif_ce_desc_data_record(struct hif_ce_desc_event *event, int len);
+
+/**
+ * hif_clear_ce_desc_debug_data() - Clear the contents of hif_ce_desc_event
+ * upto data field before reusing it.
+ *
+ * @event: record every CE event
+ *
+ * Return: None
+ */
+void hif_clear_ce_desc_debug_data(struct hif_ce_desc_event *event);
 QDF_STATUS alloc_mem_ce_debug_hist_data(struct hif_softc *scn, uint32_t ce_id);
 void free_mem_ce_debug_hist_data(struct hif_softc *scn, uint32_t ce_id);
 #else
@@ -650,6 +660,8 @@ static inline
 void hif_ce_desc_data_record(struct hif_ce_desc_event *event, int len)
 {
 }
+
+void hif_clear_ce_desc_debug_data(struct hif_ce_desc_event *event);
 #endif /*HIF_CE_DEBUG_DATA_BUF*/
 
 #ifdef HIF_CONFIG_SLUB_DEBUG_ON

hif/src/ce/ce_main.c

@@ -1274,8 +1274,10 @@ QDF_STATUS alloc_mem_ce_debug_hist_data(struct hif_softc *scn, uint32_t ce_id)
 		event = &hist_ev[index];
 		event->data =
 			(uint8_t *)qdf_mem_malloc(CE_DEBUG_MAX_DATA_BUF_SIZE);
-		if (!event->data)
+		if (!event->data) {
+			hif_err_rl("ce debug data alloc failed");
 			return QDF_STATUS_E_NOMEM;
+		}
 	}
 	return QDF_STATUS_SUCCESS;
 }
@@ -1307,6 +1309,7 @@ void free_mem_ce_debug_hist_data(struct hif_softc *scn, uint32_t ce_id)
 		event->data = NULL;
 		event = NULL;
 	}
+
 }
 #endif /* HIF_CE_DEBUG_DATA_BUF */
 
@@ -1350,11 +1353,11 @@ static void free_mem_ce_debug_history(struct hif_softc *scn, unsigned int ce_id)
 	struct ce_desc_hist *ce_hist = &scn->hif_ce_desc_hist;
 
 	ce_hist->enable[ce_id] = 0;
-	ce_hist->hist_ev[ce_id] = NULL;
 	if (ce_hist->data_enable[ce_id]) {
 		ce_hist->data_enable[ce_id] = false;
 		free_mem_ce_debug_hist_data(scn, ce_id);
 	}
+	ce_hist->hist_ev[ce_id] = NULL;
 }
 #else
 static inline QDF_STATUS

hif/src/ce/ce_service.c

@@ -111,7 +111,7 @@ void hif_ce_desc_data_record(struct hif_ce_desc_event *event, int len)
 	uint8_t *data = NULL;
 
 	if (!event->data) {
-		hif_err("No memory allocated");
+		hif_err_rl("No ce debug memory allocated");
 		return;
 	}
 
@@ -128,6 +128,17 @@ void hif_ce_desc_data_record(struct hif_ce_desc_event *event, int len)
 		event->actual_data_len = len;
 	}
 }
+
+void hif_clear_ce_desc_debug_data(struct hif_ce_desc_event *event)
+{
+	qdf_mem_zero(event,
+		     offsetof(struct hif_ce_desc_event, data));
+}
+#else
+void hif_clear_ce_desc_debug_data(struct hif_ce_desc_event *event)
+{
+	qdf_mem_zero(event, sizeof(struct hif_ce_desc_event));
+}
 #endif
 
 #if defined(HIF_CONFIG_SLUB_DEBUG_ON) && defined(HIF_RECORD_RX_PADDR)
@@ -199,14 +210,14 @@ void hif_record_ce_desc_event(struct hif_softc *scn, int ce_id,
 
 	event = &hist_ev[record_index];
 
-	qdf_mem_zero(event, sizeof(struct hif_ce_desc_event));
+	hif_clear_ce_desc_debug_data(event);
 
 	event->type = type;
 	event->time = qdf_get_log_timestamp();
 
 	if (descriptor)
 		qdf_mem_copy(&event->descriptor, descriptor,
-			     sizeof(union ce_desc));
+			     sizeof(union ce_srng_desc));
 
 	event->memory = memory;
 	event->index = index;

hif/src/ce/ce_service_srng.c

@@ -108,7 +108,7 @@ void hif_record_ce_srng_desc_event(struct hif_softc *scn, int ce_id,
 
 	event = &hist_ev[record_index];
 
-	qdf_mem_zero(event, sizeof(struct hif_ce_desc_event));
+	hif_clear_ce_desc_debug_data(event);
 
 	event->type = type;
 	event->time = qdf_get_log_timestamp();