qcacmn: ini config to allocate special TX descriptors of SOC

An INI dp_tx_spl_device_limit is defined and can be used to configure the
limit of TX descriptors that can reserved on the SOC to handle
special frames like EAPOL.

CRs-Fixed: 3343207
Change-Id: Ic84a11249880a3541749a72ac6d60df548f2bc5c

dp/wifi3.0/dp_main.c

@@ -15596,7 +15596,9 @@ void *dp_soc_init(struct dp_soc *soc, HTC_HANDLE htc_handle,
 	qdf_atomic_init(&soc->num_tx_exception);
 	soc->num_tx_allowed =
 		wlan_cfg_get_dp_soc_tx_device_limit(soc->wlan_cfg_ctx);
-	soc->num_reg_tx_allowed = soc->num_tx_allowed - MAX_TX_SPL_DESC;
+	soc->num_tx_spl_allowed =
+		wlan_cfg_get_dp_soc_tx_spl_device_limit(soc->wlan_cfg_ctx);
+	soc->num_reg_tx_allowed = soc->num_tx_allowed - soc->num_tx_spl_allowed;
 	if (soc->cdp_soc.ol_ops->get_dp_cfg_param) {
 		int ret = soc->cdp_soc.ol_ops->get_dp_cfg_param(soc->ctrl_psoc,
 				CDP_CFG_MAX_PEER_ID);

dp/wifi3.0/dp_types.h

@@ -2481,6 +2481,8 @@ struct dp_soc {
 	uint32_t num_tx_allowed;
 	/* Num Regular Tx allowed */
 	uint32_t num_reg_tx_allowed;
+	/* Num Tx allowed for special frames*/
+	uint32_t num_tx_spl_allowed;
 	/* Preferred HW mode */
 	uint8_t preferred_hw_mode;
 

wlan_cfg/cfg_dp.h

@@ -364,6 +364,10 @@
 #define WLAN_CFG_TX_DEVICE_LIMIT_MIN 16384
 #define WLAN_CFG_TX_DEVICE_LIMIT_MAX 65536
 
+#define WLAN_CFG_TX_SPL_DEVICE_LIMIT 1024
+#define WLAN_CFG_TX_SPL_DEVICE_LIMIT_MIN 0
+#define WLAN_CFG_TX_SPL_DEVICE_LIMIT_MAX 4096
+
 #define WLAN_CFG_TX_SW_INTERNODE_QUEUE 1024
 #define WLAN_CFG_TX_SW_INTERNODE_QUEUE_MIN 128
 #define WLAN_CFG_TX_SW_INTERNODE_QUEUE_MAX 1024
@@ -1176,6 +1180,13 @@
 		WLAN_CFG_TX_DEVICE_LIMIT, \
 		CFG_VALUE_OR_DEFAULT, "DP TX DEVICE limit")
 
+#define CFG_DP_TX_SPL_DEVICE_LIMIT \
+		CFG_INI_UINT("dp_tx_spl_device_limit", \
+		WLAN_CFG_TX_SPL_DEVICE_LIMIT_MIN, \
+		WLAN_CFG_TX_SPL_DEVICE_LIMIT_MAX, \
+		WLAN_CFG_TX_SPL_DEVICE_LIMIT, \
+		CFG_VALUE_OR_DEFAULT, "DP TX Special DEVICE limit")
+
 #define CFG_DP_TX_SW_INTERNODE_QUEUE \
 		CFG_INI_UINT("dp_tx_sw_internode_queue", \
 		WLAN_CFG_TX_SW_INTERNODE_QUEUE_MIN, \
@@ -1864,6 +1875,7 @@
 		CFG(CFG_DP_TX_DESC_LIMIT_1) \
 		CFG(CFG_DP_TX_DESC_LIMIT_2) \
 		CFG(CFG_DP_TX_DEVICE_LIMIT) \
+		CFG(CFG_DP_TX_SPL_DEVICE_LIMIT) \
 		CFG(CFG_DP_TX_SW_INTERNODE_QUEUE) \
 		CFG(CFG_DP_RXDMA_MONITOR_BUF_RING) \
 		CFG(CFG_DP_RXDMA_MONITOR_DST_RING) \

wlan_cfg/wlan_cfg.c

@@ -2969,6 +2969,8 @@ wlan_cfg_soc_attach(struct cdp_ctrl_objmgr_psoc *psoc)
 						CFG_DP_TX_DESC_LIMIT_2);
 	wlan_cfg_ctx->tx_device_limit = cfg_get(psoc,
 						CFG_DP_TX_DEVICE_LIMIT);
+	wlan_cfg_ctx->tx_spl_device_limit = cfg_get(psoc,
+						    CFG_DP_TX_SPL_DEVICE_LIMIT);
 	wlan_cfg_ctx->tx_sw_internode_queue = cfg_get(psoc,
 						CFG_DP_TX_SW_INTERNODE_QUEUE);
 	wlan_cfg_ctx->rxdma_err_dst_ring = cfg_get(psoc,
@@ -3807,6 +3809,12 @@ wlan_cfg_get_dp_soc_tx_device_limit(struct wlan_cfg_dp_soc_ctxt *cfg)
 	return cfg->tx_device_limit;
 }
 
+int
+wlan_cfg_get_dp_soc_tx_spl_device_limit(struct wlan_cfg_dp_soc_ctxt *cfg)
+{
+	return cfg->tx_spl_device_limit;
+}
+
 int
 wlan_cfg_get_dp_soc_tx_sw_internode_queue(struct wlan_cfg_dp_soc_ctxt *cfg)
 {

wlan_cfg/wlan_cfg.h

@@ -250,6 +250,7 @@ struct wlan_srng_cfg {
  * @tx_desc_limit_1: tx_desc limit for 2 GHz
  * @tx_desc_limit_2: tx_desc limit for 5 GHz Low
  * @tx_device_limit: tx device limit
+ * @tx_spl_device_limit: tx device limit for special frames
  * @tx_sw_internode_queue: tx sw internode queue
  * @mon_drop_thresh:
  * @tx_comp_loop_pkt_limit: Max # of packets to be processed in 1 tx comp loop
@@ -428,6 +429,7 @@ struct wlan_cfg_dp_soc_ctxt {
 	int tx_desc_limit_1;
 	int tx_desc_limit_2;
 	int tx_device_limit;
+	int tx_spl_device_limit;
 	int tx_sw_internode_queue;
 	int mon_drop_thresh;
 #ifdef WLAN_FEATURE_RX_SOFTIRQ_TIME_LIMIT
@@ -1601,6 +1603,16 @@ wlan_cfg_get_dp_soc_tx_desc_limit_2(struct wlan_cfg_dp_soc_ctxt *cfg);
 int
 wlan_cfg_get_dp_soc_tx_device_limit(struct wlan_cfg_dp_soc_ctxt *cfg);
 
+/**
+ * wlan_cfg_get_dp_soc_tx_spl_device_limit - Get tx device limit for special
+ *					     frames
+ * @cfg: Configuration Handle
+ *
+ * Return: tx device limit for special frames
+ */
+int
+wlan_cfg_get_dp_soc_tx_spl_device_limit(struct wlan_cfg_dp_soc_ctxt *cfg);
+
 /**
  * wlan_cfg_get_dp_soc_tx_sw_internode_queue - Get tx sw internode queue
  * @cfg: soc configuration context