qcacmn: Enable the 4th Tx. completion ring

Enable the 4th Tx. completion ring to save CPU load
Initialization and interrupt handling for 4th completion ring
is done here.

Change-Id: I2db27218a3c3e14d719d012f03454a6a7aa647fe

dp/wifi3.0/li/dp_li.c

@@ -25,6 +25,7 @@
 #include "dp_tx_desc.h"
 #include "dp_li_rx.h"
 #include "dp_peer.h"
+#include <wlan_utility.h>
 
 #if defined(WLAN_MAX_PDEVS) && (WLAN_MAX_PDEVS == 1)
 static struct wlan_cfg_tcl_wbm_ring_num_map g_tcl_wbm_map_array[MAX_TCL_DATA_RINGS] = {
@@ -346,22 +347,128 @@ dp_rxdma_ring_sel_cfg_li(struct dp_soc *soc)
 }
 #endif
 
+#ifdef QCA_DP_ENABLE_TX_COMP_RING4
+static inline
+void dp_deinit_txcomp_ring4(struct dp_soc *soc)
+{
+	if (soc) {
+		wlan_minidump_remove(soc->tx_comp_ring[3].base_vaddr_unaligned,
+				     soc->tx_comp_ring[3].alloc_size,
+				     soc->ctrl_psoc, WLAN_MD_DP_SRNG_TX_COMP,
+				     "Transmit_completion_ring");
+		dp_srng_deinit(soc, &soc->tx_comp_ring[3], WBM2SW_RELEASE, 0);
+	}
+}
+
+static inline
+QDF_STATUS dp_init_txcomp_ring4(struct dp_soc *soc)
+{
+	if (soc) {
+		if (dp_srng_init(soc, &soc->tx_comp_ring[3],
+				 WBM2SW_RELEASE, WBM2SW_TXCOMP_RING4_NUM, 0)) {
+			dp_err("%pK: dp_srng_init failed for rx_rel_ring",
+			       soc);
+			return QDF_STATUS_E_FAILURE;
+		}
+		wlan_minidump_log(soc->tx_comp_ring[3].base_vaddr_unaligned,
+				  soc->tx_comp_ring[3].alloc_size,
+				  soc->ctrl_psoc, WLAN_MD_DP_SRNG_TX_COMP,
+				  "Transmit_completion_ring");
+	}
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline
+void dp_free_txcomp_ring4(struct dp_soc *soc)
+{
+	if (soc)
+		dp_srng_free(soc, &soc->tx_comp_ring[3]);
+}
+
+static inline
+QDF_STATUS dp_alloc_txcomp_ring4(struct dp_soc *soc, uint32_t tx_comp_ring_size,
+				 uint32_t cached)
+{
+	if (soc) {
+		if (dp_srng_alloc(soc, &soc->tx_comp_ring[3], WBM2SW_RELEASE,
+				  tx_comp_ring_size, cached)) {
+			dp_err("dp_srng_alloc failed for tx_comp_ring");
+			return QDF_STATUS_E_FAILURE;
+		}
+	}
+	return QDF_STATUS_SUCCESS;
+}
+#else
+static inline
+void dp_deinit_txcomp_ring4(struct dp_soc *soc)
+{
+}
+
+static inline
+QDF_STATUS dp_init_txcomp_ring4(struct dp_soc *soc)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline
+void dp_free_txcomp_ring4(struct dp_soc *soc)
+{
+}
+
+static inline
+QDF_STATUS dp_alloc_txcomp_ring4(struct dp_soc *soc, uint32_t tx_comp_ring_size,
+				 uint32_t cached)
+{
+	return QDF_STATUS_SUCCESS;
+}
+#endif
+
 static void dp_soc_srng_deinit_li(struct dp_soc *soc)
 {
+	/* Tx Complete ring */
+	dp_deinit_txcomp_ring4(soc);
 }
 
 static void dp_soc_srng_free_li(struct dp_soc *soc)
 {
+	dp_free_txcomp_ring4(soc);
 }
 
 static QDF_STATUS dp_soc_srng_alloc_li(struct dp_soc *soc)
 {
+	uint32_t tx_comp_ring_size;
+	uint32_t cached = WLAN_CFG_DST_RING_CACHED_DESC;
+	struct wlan_cfg_dp_soc_ctxt *soc_cfg_ctx;
+
+	soc_cfg_ctx = soc->wlan_cfg_ctx;
+
+	tx_comp_ring_size = wlan_cfg_tx_comp_ring_size(soc_cfg_ctx);
+	/* Disable cached desc if NSS offload is enabled */
+	if (wlan_cfg_get_dp_soc_nss_cfg(soc_cfg_ctx))
+		cached = 0;
+
+	if (dp_alloc_txcomp_ring4(soc, tx_comp_ring_size, cached))
+		goto fail1;
 	return QDF_STATUS_SUCCESS;
+fail1:
+	dp_soc_srng_free_li(soc);
+	return QDF_STATUS_E_NOMEM;
 }
 
 static QDF_STATUS dp_soc_srng_init_li(struct dp_soc *soc)
 {
+	/* Tx comp ring 3 */
+	if (dp_init_txcomp_ring4(soc))
+		goto fail1;
+
 	return QDF_STATUS_SUCCESS;
+fail1:
+	/*
+	 * Cleanup will be done as part of soc_detach, which will
+	 * be called on pdev attach failure
+	 */
+	dp_soc_srng_deinit_li(soc);
+	return QDF_STATUS_E_FAILURE;
 }
 
 static void dp_tx_implicit_rbm_set_li(struct dp_soc *soc,