qcacmn: Add TX descriptor history support

Add history to log HW TX descriptors programmed in TX ring.

Change-Id: Ia17e5557115f20508ed22c045941c0645c46ef1d
CRs-Fixed: 2928996

dp/wifi3.0/dp_main.c

@@ -4481,6 +4481,41 @@ static QDF_STATUS dp_htt_ppdu_stats_attach(struct dp_pdev *pdev)
 	return QDF_STATUS_SUCCESS;
 }
 
+#ifdef DP_TX_HW_DESC_HISTORY
+/**
+ * dp_soc_tx_hw_desc_history_attach - Attach TX HW descriptor history
+ *
+ * @soc: DP soc handle
+ *
+ * Return: None
+ */
+static void dp_soc_tx_hw_desc_history_attach(struct dp_soc *soc)
+{
+	soc->tx_hw_desc_history = dp_context_alloc_mem(
+			soc, DP_TX_HW_DESC_HIST_TYPE,
+			sizeof(struct dp_tx_hw_desc_evt));
+	if (soc->tx_hw_desc_history)
+		soc->tx_hw_desc_history->index = 0;
+}
+
+static void dp_soc_tx_hw_desc_history_detach(struct dp_soc *soc)
+{
+	dp_context_free_mem(soc, DP_TX_HW_DESC_HIST_TYPE,
+			    soc->tx_hw_desc_history);
+}
+
+#else /* DP_TX_HW_DESC_HISTORY */
+static inline void
+dp_soc_tx_hw_desc_history_attach(struct dp_soc *soc)
+{
+}
+
+static inline void
+dp_soc_tx_hw_desc_history_detach(struct dp_soc *soc)
+{
+}
+#endif /* DP_TX_HW_DESC_HISTORY */
+
 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY
 #ifndef RX_DEFRAG_DO_NOT_REINJECT
 /**
@@ -5157,6 +5192,7 @@ static void dp_soc_detach(struct cdp_soc_t *txrx_soc)
 	dp_hw_link_desc_ring_free(soc);
 	dp_hw_link_desc_pool_banks_free(soc, WLAN_INVALID_PDEV_ID);
 	wlan_cfg_soc_detach(soc->wlan_cfg_ctx);
+	dp_soc_tx_hw_desc_history_detach(soc);
 	dp_soc_rx_history_detach(soc);
 	if (soc->mon_vdev_timer_state & MON_VDEV_TIMER_INIT) {
 		qdf_timer_free(&soc->mon_vdev_timer);
@@ -12687,6 +12723,7 @@ dp_soc_attach(struct cdp_ctrl_objmgr_psoc *ctrl_psoc,
 	/* Reset wbm sg list and flags */
 	dp_rx_wbm_sg_list_reset(soc);
 
+	dp_soc_tx_hw_desc_history_attach(soc);
 	dp_soc_rx_history_attach(soc);
 	wlan_set_srng_cfg(&soc->wlan_srng_cfg);
 	soc->wlan_cfg_ctx = wlan_cfg_soc_attach(soc->ctrl_psoc);

dp/wifi3.0/dp_tx.c

@@ -1392,6 +1392,34 @@ dp_tx_ring_access_end_wrapper(struct dp_soc *soc,
 }
 #endif
 
+#ifdef DP_TX_HW_DESC_HISTORY
+static inline void
+dp_tx_hw_desc_update_evt(uint8_t *hal_tx_desc_cached,
+			 hal_ring_handle_t hal_ring_hdl,
+			 struct dp_soc *soc)
+{
+	struct dp_tx_hw_desc_evt *evt;
+	uint64_t idx = 0;
+
+	idx = ++soc->tx_hw_desc_history->index;
+	if (idx == DP_TX_HW_DESC_HIST_MAX)
+		soc->tx_hw_desc_history->index = 0;
+	idx = (idx % DP_TX_HW_DESC_HIST_MAX);
+
+	evt = &soc->tx_hw_desc_history->entry[idx];
+	qdf_mem_copy(evt->tcl_desc, hal_tx_desc_cached, HAL_TX_DESC_LEN_BYTES);
+	evt->posted = qdf_get_log_timestamp();
+	hal_get_sw_hptp(soc->hal_soc, hal_ring_hdl, &evt->tp, &evt->hp);
+}
+#else
+static inline void
+dp_tx_hw_desc_update_evt(uint8_t *hal_tx_desc_cached,
+			 hal_ring_handle_t hal_ring_hdl,
+			 struct dp_soc *soc)
+{
+}
+#endif
+
 /**
  * dp_tx_hw_enqueue() - Enqueue to TCL HW for transmit
  * @soc: DP Soc Handle
@@ -1526,6 +1554,9 @@ dp_tx_hw_enqueue(struct dp_soc *soc, struct dp_vdev *vdev,
 	dp_tx_update_stats(soc, tx_desc->nbuf);
 	status = QDF_STATUS_SUCCESS;
 
+	dp_tx_hw_desc_update_evt((uint8_t *)hal_tx_desc_cached,
+				 hal_ring_hdl, soc);
+
 ring_access_fail:
 	dp_tx_ring_access_end_wrapper(soc, hal_ring_hdl, coalesce);
 

dp/wifi3.0/dp_types.h

@@ -380,6 +380,7 @@ struct dp_rx_nbuf_frag_info {
  * @DP_RX_ERR_RING_HIST_TYPE: Datapath rx error ring history
  * @DP_RX_REINJECT_RING_HIST_TYPE: Datapath reinject ring history
  * @DP_RX_REFILL_RING_HIST_TYPE: Datapath rx refill ring history
+ * @DP_TX_HW_DESC_HIST_TYPE: Datapath TX HW descriptor history
  */
 enum dp_ctxt_type {
 	DP_PDEV_TYPE,
@@ -388,6 +389,7 @@ enum dp_ctxt_type {
 	DP_RX_REINJECT_RING_HIST_TYPE,
 	DP_FISA_RX_FT_TYPE,
 	DP_RX_REFILL_RING_HIST_TYPE,
+	DP_TX_HW_DESC_HIST_TYPE,
 };
 
 /**
@@ -1165,6 +1167,26 @@ struct rx_refill_buff_pool {
 	bool is_initialized;
 };
 
+#ifdef DP_TX_HW_DESC_HISTORY
+#define DP_TX_HW_DESC_HIST_MAX 6144
+
+struct dp_tx_hw_desc_evt {
+	uint8_t tcl_desc[HAL_TX_DESC_LEN_BYTES];
+	uint64_t posted;
+	uint32_t hp;
+	uint32_t tp;
+};
+
+/* struct dp_tx_hw_desc_history - TX HW desc hisotry
+ * @index: Index where the last entry is written
+ * @entry: history entries
+ */
+struct dp_tx_hw_desc_history {
+	uint64_t index;
+	struct dp_tx_hw_desc_evt entry[DP_TX_HW_DESC_HIST_MAX];
+};
+#endif
+
 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY
 /*
  * The logic for get current index of these history is dependent on this
@@ -1653,6 +1675,10 @@ struct dp_soc {
 		TAILQ_HEAD(, dp_ast_entry) * bins;
 	} ast_hash;
 
+#ifdef DP_TX_HW_DESC_HISTORY
+	struct dp_tx_hw_desc_history *tx_hw_desc_history;
+#endif
+
 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY
 	struct dp_rx_history *rx_ring_history[MAX_REO_DEST_RINGS];
 	struct dp_rx_refill_history *rx_refill_ring_history[MAX_PDEV_CNT];