qcacmn: Add dp functionality to support stats sysfs

Add dp functionality to collect stats for sysfs buffer.
Add both host and fw stats.

Change-Id: I64f84804d36cccec9d701925d96cc7ee96943b7a
CRs-Fixed: 3035864

dp/wifi3.0/dp_internal.h

@@ -57,10 +57,13 @@ struct htt_dbgfs_cfg {
 #define DBG_STATS_COOKIE_DEFAULT 0x0
 
 /* Reserve for DP Stats: 3rd bit */
-#define DBG_STATS_COOKIE_DP_STATS 0x8
+#define DBG_STATS_COOKIE_DP_STATS BIT(3)
 
 /* Reserve for HTT Stats debugfs support: 4th bit */
-#define DBG_STATS_COOKIE_HTT_DBGFS 0x10
+#define DBG_STATS_COOKIE_HTT_DBGFS BIT(4)
+
+/*Reserve for HTT Stats debugfs support: 5th bit */
+#define DBG_SYSFS_STATS_COOKIE BIT(5)
 
 /**
  * Bitmap of HTT PPDU TLV types for Default mode
@@ -612,6 +615,19 @@ void dp_monitor_pdev_reset_scan_spcl_vap_stats_enable(struct dp_pdev *pdev,
 }
 #endif
 
+/**
+ * cdp_soc_t_to_dp_soc() - typecast cdp_soc_t to
+ * dp soc handle
+ * @psoc: CDP psoc handle
+ *
+ * Return: struct dp_soc pointer
+ */
+static inline
+struct dp_soc *cdp_soc_t_to_dp_soc(struct cdp_soc_t *psoc)
+{
+	return (struct dp_soc *)psoc;
+}
+
 #define DP_MAX_TIMER_EXEC_TIME_TICKS \
 		(QDF_LOG_TIMESTAMP_CYCLES_PER_10_US * 100 * 20)
 
@@ -666,6 +682,48 @@ while (0)
 	QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_##LVL,       \
 		fmt, ## args)
 
+#ifdef WLAN_SYSFS_DP_STATS
+static
+inline void DP_PRINT_STATS(const char *fmt, ...)
+{
+	void *soc_void = NULL;
+	va_list val;
+	uint16_t buf_written = 0;
+	uint16_t curr_len = 0;
+	uint16_t max_len = 0;
+	struct dp_soc *soc = NULL;
+
+	soc_void = cds_get_context(QDF_MODULE_ID_SOC);
+	soc = cdp_soc_t_to_dp_soc(soc_void);
+	va_start(val, fmt);
+	QDF_VTRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_HIGH, (char *)fmt, val);
+	/* writing to the buffer */
+	if (soc->sysfs_config && soc->sysfs_config->printing_mode == PRINTING_MODE_ENABLED) {
+		if (soc->sysfs_config->process_id == qdf_get_current_pid()) {
+			curr_len = soc->sysfs_config->curr_buffer_length;
+			max_len = soc->sysfs_config->max_buffer_length;
+			if ((max_len - curr_len) <= 1)
+				return;
+
+			qdf_spinlock_acquire(&soc->sysfs_config->sysfs_write_user_buffer);
+			if (soc->sysfs_config->buf) {
+				buf_written = vscnprintf(soc->sysfs_config->buf + curr_len,
+							 max_len - curr_len, fmt, val);
+				curr_len += buf_written;
+				if ((max_len - curr_len) <= 1)
+					return;
+
+				buf_written += scnprintf(soc->sysfs_config->buf + curr_len,
+							 max_len - curr_len, "\n");
+				soc->sysfs_config->curr_buffer_length +=  buf_written;
+			}
+			qdf_spinlock_release(&soc->sysfs_config->sysfs_write_user_buffer);
+		}
+	}
+	va_end(val);
+}
+
+#else /* WLAN_SYSFS_DP_STATS */
 #ifdef DP_PRINT_NO_CONSOLE
 /* Stat prints should not go to console or kernel logs.*/
 #define DP_PRINT_STATS(fmt, args ...)\
@@ -676,6 +734,8 @@ while (0)
 	QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,\
 		  fmt, ## args)
 #endif
+#endif /* WLAN_SYSFS_DP_STATS */
+
 #define DP_STATS_INIT(_handle) \
 	qdf_mem_zero(&((_handle)->stats), sizeof((_handle)->stats))
 
@@ -2479,19 +2539,6 @@ struct cdp_soc_t *dp_soc_to_cdp_soc_t(struct dp_soc *psoc)
 	return (struct cdp_soc_t *)psoc;
 }
 
-/**
- * cdp_soc_t_to_dp_soc() - typecast cdp_soc_t to
- * dp soc handle
- * @psoc: CDP psoc handle
- *
- * Return: struct dp_soc pointer
- */
-static inline
-struct dp_soc *cdp_soc_t_to_dp_soc(struct cdp_soc_t *psoc)
-{
-	return (struct dp_soc *)psoc;
-}
-
 #if defined(WLAN_SUPPORT_RX_FLOW_TAG) || defined(WLAN_SUPPORT_RX_FISA)
 /**
  * dp_rx_flow_update_fse_stats() - Update a flow's statistics