qcacmn: Pre allocate pdev during attach

Pre-allocate pdev context as size exceeds dynamic allocation
threshold (4KB).

Change-Id: Ida866275ed1ddea5a9b6aa1cf114ccd226ed0f22
CRs-Fixed: 2825110

dp/inc/cdp_txrx_ops.h

@@ -1122,6 +1122,9 @@ struct ol_if_ops {
 				   uint8_t *peer_mac_addr);
 #endif
 #ifdef DP_MEM_PRE_ALLOC
+	void *(*dp_prealloc_get_context)(uint32_t ctxt_type);
+
+	QDF_STATUS(*dp_prealloc_put_context)(uint32_t ctxt_type, void *vaddr);
 	void *(*dp_prealloc_get_consistent)(uint32_t *size,
 					    void **base_vaddr_unaligned,
 					    qdf_dma_addr_t *paddr_unaligned,

dp/wifi3.0/dp_internal.h

@@ -2517,6 +2517,29 @@ QDF_STATUS dp_wds_ext_set_peer_rx(ol_txrx_soc_handle soc,
 #endif /* QCA_SUPPORT_WDS_EXTENDED */
 
 #ifdef DP_MEM_PRE_ALLOC
+
+/**
+ * dp_context_alloc_mem() - allocate memory for DP context
+ * @soc: datapath soc handle
+ * @ctxt_type: DP context type
+ * @ctxt_size: DP context size
+ *
+ * Return: DP context address
+ */
+void *dp_context_alloc_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			   size_t ctxt_size);
+
+/**
+ * dp_context_free_mem() - Free memory of DP context
+ * @soc: datapath soc handle
+ * @ctxt_type: DP context type
+ * @vaddr: Address of context memory
+ *
+ * Return: None
+ */
+void dp_context_free_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			 void *vaddr);
+
 /**
  * dp_desc_multi_pages_mem_alloc() - alloc memory over multiple pages
  * @soc: datapath soc handle
@@ -2563,6 +2586,20 @@ void dp_desc_multi_pages_mem_free(struct dp_soc *soc,
 				  bool cacheable);
 
 #else
+static inline
+void *dp_context_alloc_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			   size_t ctxt_size)
+{
+	return qdf_mem_malloc(ctxt_size);
+}
+
+static inline
+void dp_context_free_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			 void *vaddr)
+{
+	qdf_mem_free(vaddr);
+}
+
 static inline
 void dp_desc_multi_pages_mem_alloc(struct dp_soc *soc,
 				   enum dp_desc_type desc_type,

dp/wifi3.0/dp_main.c

@@ -1445,6 +1445,49 @@ dp_srng_configure_interrupt_thresholds(struct dp_soc *soc,
 #endif
 
 #ifdef DP_MEM_PRE_ALLOC
+
+void *dp_context_alloc_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			   size_t ctxt_size)
+{
+	void *ctxt_mem;
+
+	if (!soc->cdp_soc.ol_ops->dp_prealloc_get_context) {
+		dp_warn("dp_prealloc_get_context null!");
+		goto dynamic_alloc;
+	}
+
+	ctxt_mem = soc->cdp_soc.ol_ops->dp_prealloc_get_context(ctxt_type);
+
+	if (ctxt_mem)
+		goto end;
+
+dynamic_alloc:
+	dp_info("Pre-alloc of ctxt failed. Dynamic allocation");
+	ctxt_mem = qdf_mem_malloc(ctxt_size);
+end:
+	return ctxt_mem;
+}
+
+void dp_context_free_mem(struct dp_soc *soc, enum dp_ctxt_type ctxt_type,
+			 void *vaddr)
+{
+	QDF_STATUS status;
+
+	if (soc->cdp_soc.ol_ops->dp_prealloc_put_context) {
+		status = soc->cdp_soc.ol_ops->dp_prealloc_put_context(
+								DP_PDEV_TYPE,
+								vaddr);
+	} else {
+		dp_warn("dp_prealloc_get_context null!");
+		status = QDF_STATUS_E_NOSUPPORT;
+	}
+
+	if (QDF_IS_STATUS_ERROR(status)) {
+		dp_info("Context not pre-allocated");
+		qdf_mem_free(vaddr);
+	}
+}
+
 static inline
 void *dp_srng_aligned_mem_alloc_consistent(struct dp_soc *soc,
 					   struct dp_srng *srng,
@@ -4193,7 +4236,7 @@ static inline QDF_STATUS dp_pdev_attach_wifi3(struct cdp_soc_t *txrx_soc,
 	struct wlan_cfg_dp_soc_ctxt *soc_cfg_ctx;
 	int nss_cfg;
 
-	pdev = qdf_mem_malloc(sizeof(*pdev));
+	pdev = dp_context_alloc_mem(soc, DP_PDEV_TYPE, sizeof(*pdev));
 	if (!pdev) {
 		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
 			  FL("DP PDEV memory allocation failed"));
@@ -4544,7 +4587,7 @@ static void dp_pdev_detach(struct cdp_pdev *txrx_pdev, int force)
 
 	wlan_cfg_pdev_detach(pdev->wlan_cfg_ctx);
 	wlan_minidump_remove(pdev);
-	qdf_mem_free(pdev);
+	dp_context_free_mem(soc, DP_PDEV_TYPE, pdev);
 }
 
 /*

dp/wifi3.0/dp_types.h

@@ -367,6 +367,14 @@ struct dp_rx_nbuf_frag_info {
 	} virt_addr;
 };
 
+/**
+ * enum dp_ctxt - context type
+ * @DP_PDEV_TYPE: PDEV context
+ */
+enum dp_ctxt_type {
+	DP_PDEV_TYPE
+};
+
 /**
  * enum dp_desc_type - source type for multiple pages allocation
  * @DP_TX_DESC_TYPE: DP SW TX descriptor