qcacmn: IOMMU map and unmap RX buffers to LPASS SMMU CB

IOMMU map and unmap RX buffers into LPASS SMMU context
bank for LPASS to access RX buffers in direct link
usecases.

Change-Id: Ie72a008309e3abdf3fbc7198bb5d3af5e9497180
CRs-Fixed: 3356568

dp/wifi3.0/dp_rx_buffer_pool.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -212,10 +213,22 @@ dp_rx_buffer_pool_nbuf_map(struct dp_soc *soc,
 			   struct rx_desc_pool *rx_desc_pool,
 			   struct dp_rx_nbuf_frag_info *nbuf_frag_info_t)
 {
-	return qdf_nbuf_map_nbytes_single(soc->osdev,
-					 (nbuf_frag_info_t->virt_addr).nbuf,
-					 QDF_DMA_FROM_DEVICE,
-					 rx_desc_pool->buf_size);
+	QDF_STATUS status;
+
+	status = qdf_nbuf_map_nbytes_single(soc->osdev,
+					    (nbuf_frag_info_t->virt_addr).nbuf,
+					    QDF_DMA_FROM_DEVICE,
+					    rx_desc_pool->buf_size);
+	if (QDF_IS_STATUS_ERROR(status))
+		return status;
+
+	dp_audio_smmu_map(soc->osdev,
+			  qdf_mem_paddr_from_dmaaddr(soc->osdev,
+						     QDF_NBUF_CB_PADDR((nbuf_frag_info_t->virt_addr).nbuf)),
+			  QDF_NBUF_CB_PADDR((nbuf_frag_info_t->virt_addr).nbuf),
+			  rx_desc_pool->buf_size);
+
+	return status;
 }
 
 static inline void dp_rx_schedule_refill_thread(struct dp_soc *soc) { }