qcacmn: Add support for WLAN-IPA WDI2 with SMMU Stage 1

Update WLAN-IPA WDI-2 datapath for DMA buffer sharing with SMMU
Stage 1 translation support. When SMMU Stage 1 is enabled DMA
APIs return IO virtual address(IOVA) instead of physical address.
This IOVA need to mapped to physical address by IPA module
before accessing them.

Change-Id: I33082bc74760b0f12c348238c6f48f5ce5750172
CRS-Fixed: 2072953

dp/inc/cdp_txrx_mob_def.h

@@ -282,27 +282,22 @@ struct txrx_pdev_cfg_param_t {
  * ol_txrx_ipa_resources - Resources needed for IPA
  */
 struct ol_txrx_ipa_resources {
-	qdf_dma_addr_t ce_sr_base_paddr;
+	qdf_shared_mem_t *ce_sr;
 	uint32_t ce_sr_ring_size;
 	qdf_dma_addr_t ce_reg_paddr;
 
-	qdf_dma_addr_t tx_comp_ring_base_paddr;
-	uint32_t tx_comp_ring_size;
+	qdf_shared_mem_t *tx_comp_ring;
 	uint32_t tx_num_alloc_buffer;
 
-	qdf_dma_addr_t rx_rdy_ring_base_paddr;
-	uint32_t rx_rdy_ring_size;
-	qdf_dma_addr_t rx_proc_done_idx_paddr;
-	void *rx_proc_done_idx_vaddr;
+	qdf_shared_mem_t *rx_rdy_ring;
+	qdf_shared_mem_t *rx_proc_done_idx;
 
-	qdf_dma_addr_t rx2_rdy_ring_base_paddr;
-	uint32_t rx2_rdy_ring_size;
-	qdf_dma_addr_t rx2_proc_done_idx_paddr;
-	void *rx2_proc_done_idx_vaddr;
+	qdf_shared_mem_t *rx2_rdy_ring;
+	qdf_shared_mem_t *rx2_proc_done_idx;
 
 	/* IPA UC doorbell registers paddr */
-	qdf_dma_addr_t tx_comp_doorbell_paddr;
-	qdf_dma_addr_t rx_ready_doorbell_paddr;
+	qdf_dma_addr_t tx_comp_doorbell_dmaaddr;
+	qdf_dma_addr_t rx_ready_doorbell_dmaaddr;
 
 	uint32_t tx_pipe_handle;
 	uint32_t rx_pipe_handle;

hif/inc/hif.h

@@ -522,7 +522,7 @@ static inline void *hif_get_ce_handle(struct hif_opaque_softc *hif_ctx, int ret)
 #define CONFIG_DISABLE_CDC_MAX_PERF_WAR 0
 
 void hif_ipa_get_ce_resource(struct hif_opaque_softc *hif_ctx,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr);
 

hif/src/ce/ce_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -447,14 +447,14 @@ struct ce_sendlist {
 
 #ifdef IPA_OFFLOAD
 void ce_ipa_get_resource(struct CE_handle *ce,
-			 qdf_dma_addr_t *ce_sr_base_paddr,
+			 qdf_shared_mem_t **ce_sr,
 			 uint32_t *ce_sr_ring_size,
 			 qdf_dma_addr_t *ce_reg_paddr);
 #else
 /**
  * ce_ipa_get_resource() - get uc resource on copyengine
  * @ce: copyengine context
- * @ce_sr_base_paddr: copyengine source ring base physical address
+ * @ce_sr: copyengine source ring resource info
  * @ce_sr_ring_size: copyengine source ring size
  * @ce_reg_paddr: copyengine register physical address
  *
@@ -467,7 +467,7 @@ void ce_ipa_get_resource(struct CE_handle *ce,
  * Return: None
  */
 static inline void ce_ipa_get_resource(struct CE_handle *ce,
-			 qdf_dma_addr_t *ce_sr_base_paddr,
+			 qdf_shared_mem_t **ce_sr,
 			 uint32_t *ce_sr_ring_size,
 			 qdf_dma_addr_t *ce_reg_paddr)
 {

hif/src/ce/ce_main.c

@@ -698,6 +698,104 @@ static void ce_ring_test_initial_indexes(int ce_id, struct CE_ring_state *ring,
 		QDF_BUG(0);
 }
 
+#ifdef IPA_OFFLOAD
+/**
+ * ce_alloc_desc_ring() - Allocate copyengine descriptor ring
+ * @scn: softc instance
+ * @ce_id: ce in question
+ * @base_addr: pointer to copyengine ring base address
+ * @ce_ring: copyengine instance
+ * @nentries: number of entries should be allocated
+ * @desc_size: ce desc size
+ *
+ * Return: QDF_STATUS_SUCCESS - for success
+ */
+static QDF_STATUS ce_alloc_desc_ring(struct hif_softc *scn, unsigned int CE_id,
+				     qdf_dma_addr_t *base_addr,
+				     struct CE_ring_state *ce_ring,
+				     unsigned int nentries, uint32_t desc_size)
+{
+	if (CE_id == HIF_PCI_IPA_UC_ASSIGNED_CE) {
+		scn->ipa_ce_ring = qdf_mem_shared_mem_alloc(scn->qdf_dev,
+			nentries * desc_size + CE_DESC_RING_ALIGN);
+		if (!scn->ipa_ce_ring) {
+			HIF_ERROR("%s: Failed to allocate memory for IPA ce ring",
+				  __func__);
+			return QDF_STATUS_E_NOMEM;
+		}
+		*base_addr = qdf_mem_get_dma_addr(scn->qdf_dev,
+						&scn->ipa_ce_ring->mem_info);
+		ce_ring->base_addr_owner_space_unaligned =
+						scn->ipa_ce_ring->vaddr;
+	} else {
+		ce_ring->base_addr_owner_space_unaligned =
+			qdf_mem_alloc_consistent(scn->qdf_dev,
+						 scn->qdf_dev->dev,
+						 (nentries * desc_size +
+						 CE_DESC_RING_ALIGN),
+						 base_addr);
+		if (!ce_ring->base_addr_owner_space_unaligned) {
+			HIF_ERROR("%s: Failed to allocate DMA memory for ce ring id : %u",
+				  __func__, CE_id);
+			return QDF_STATUS_E_NOMEM;
+		}
+	}
+	return QDF_STATUS_SUCCESS;
+}
+
+/**
+ * ce_free_desc_ring() - Frees copyengine descriptor ring
+ * @scn: softc instance
+ * @ce_id: ce in question
+ * @ce_ring: copyengine instance
+ * @desc_size: ce desc size
+ *
+ * Return: None
+ */
+static void ce_free_desc_ring(struct hif_softc *scn, unsigned int CE_id,
+			      struct CE_ring_state *ce_ring, uint32_t desc_size)
+{
+	if (CE_id == HIF_PCI_IPA_UC_ASSIGNED_CE) {
+		qdf_mem_shared_mem_free(scn->qdf_dev,
+					scn->ipa_ce_ring);
+		ce_ring->base_addr_owner_space_unaligned = NULL;
+	} else {
+		qdf_mem_free_consistent(scn->qdf_dev, scn->qdf_dev->dev,
+			ce_ring->nentries * desc_size + CE_DESC_RING_ALIGN,
+			ce_ring->base_addr_owner_space_unaligned,
+			ce_ring->base_addr_CE_space, 0);
+		ce_ring->base_addr_owner_space_unaligned = NULL;
+	}
+}
+#else
+static QDF_STATUS ce_alloc_desc_ring(struct hif_softc *scn, unsigned int CE_id,
+				     qdf_dma_addr_t *base_addr,
+				     struct CE_ring_state *ce_ring,
+				     unsigned int nentries, uint32_t desc_size)
+{
+	ce_ring->base_addr_owner_space_unaligned =
+		qdf_mem_alloc_consistent(scn->qdf_dev, scn->qdf_dev->dev,
+					 (nentries * desc_size +
+					 CE_DESC_RING_ALIGN), base_addr);
+	if (!ce_ring->base_addr_owner_space_unaligned) {
+		HIF_ERROR("%s: Failed to allocate DMA memory for ce ring id : %u",
+			  __func__, CE_id);
+		return QDF_STATUS_E_NOMEM;
+	}
+	return QDF_STATUS_SUCCESS;
+}
+
+static void ce_free_desc_ring(struct hif_softc *scn, unsigned int CE_id,
+			      struct CE_ring_state *ce_ring, uint32_t desc_size)
+{
+	qdf_mem_free_consistent(scn->qdf_dev, scn->qdf_dev->dev,
+		ce_ring->nentries * desc_size + CE_DESC_RING_ALIGN,
+		ce_ring->base_addr_owner_space_unaligned,
+		ce_ring->base_addr_CE_space, 0);
+	ce_ring->base_addr_owner_space_unaligned = NULL;
+}
+#endif /* IPA_OFFLOAD */
+
 /**
  * ce_srng_based() - Does this target use srng
  * @ce_state : pointer to the state context of the CE
@@ -790,15 +888,10 @@ static struct CE_ring_state *ce_alloc_ring_state(struct CE_state *CE_state,
 	/* Legacy platforms that do not support cache
 	 * coherent DMA are unsupported
 	 */
-	ce_ring->base_addr_owner_space_unaligned =
-		qdf_mem_alloc_consistent(scn->qdf_dev,
-				scn->qdf_dev->dev,
-				(nentries *
-				 desc_size +
-				 CE_DESC_RING_ALIGN),
-				&base_addr);
-	if (ce_ring->base_addr_owner_space_unaligned
-			== NULL) {
+	if (ce_alloc_desc_ring(scn, CE_state->id, &base_addr,
+			       ce_ring, nentries,
+			       desc_size) !=
+	    QDF_STATUS_SUCCESS) {
 		HIF_ERROR("%s: ring has no DMA mem",
 				__func__);
 		qdf_mem_free(ptr);
@@ -1520,15 +1613,9 @@ void ce_fini(struct CE_handle *copyeng)
 		if (CE_state->src_ring->shadow_base_unaligned)
 			qdf_mem_free(CE_state->src_ring->shadow_base_unaligned);
 		if (CE_state->src_ring->base_addr_owner_space_unaligned)
-			qdf_mem_free_consistent(scn->qdf_dev,
-						scn->qdf_dev->dev,
-					    (CE_state->src_ring->nentries *
-					     desc_size +
-					     CE_DESC_RING_ALIGN),
-					    CE_state->src_ring->
-					    base_addr_owner_space_unaligned,
-					    CE_state->src_ring->
-					    base_addr_CE_space, 0);
+			ce_free_desc_ring(scn, CE_state->id,
+					  CE_state->src_ring,
+					  desc_size);
 		qdf_mem_free(CE_state->src_ring);
 	}
 	if (CE_state->dest_ring) {
@@ -1537,15 +1624,9 @@ void ce_fini(struct CE_handle *copyeng)
 
 		desc_size = ce_get_desc_size(scn, CE_RING_DEST);
 		if (CE_state->dest_ring->base_addr_owner_space_unaligned)
-			qdf_mem_free_consistent(scn->qdf_dev,
-						scn->qdf_dev->dev,
-					    (CE_state->dest_ring->nentries *
-					     desc_size +
-					     CE_DESC_RING_ALIGN),
-					    CE_state->dest_ring->
-					    base_addr_owner_space_unaligned,
-					    CE_state->dest_ring->
-					    base_addr_CE_space, 0);
+			ce_free_desc_ring(scn, CE_state->id,
+					  CE_state->dest_ring,
+					  desc_size);
 		qdf_mem_free(CE_state->dest_ring);
 
 		/* epping */
@@ -1563,15 +1644,9 @@ void ce_fini(struct CE_handle *copyeng)
 
 		desc_size = ce_get_desc_size(scn, CE_RING_STATUS);
 		if (CE_state->status_ring->base_addr_owner_space_unaligned)
-			qdf_mem_free_consistent(scn->qdf_dev,
-						scn->qdf_dev->dev,
-					    (CE_state->status_ring->nentries *
-					     desc_size +
-					     CE_DESC_RING_ALIGN),
-					    CE_state->status_ring->
-					    base_addr_owner_space_unaligned,
-					    CE_state->status_ring->
-					    base_addr_CE_space, 0);
+			ce_free_desc_ring(scn, CE_state->id,
+					  CE_state->status_ring,
+					  desc_size);
 		qdf_mem_free(CE_state->status_ring);
 	}
 
@@ -2840,7 +2915,7 @@ qdf_export_symbol(hif_ce_fastpath_cb_register);
  * Return: None
  */
 void hif_ce_ipa_get_ce_resource(struct hif_softc *scn,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr)
 {
@@ -2849,7 +2924,7 @@ void hif_ce_ipa_get_ce_resource(struct hif_softc *scn,
 		&(hif_state->pipe_info[HIF_PCI_IPA_UC_ASSIGNED_CE]);
 	struct CE_handle *ce_hdl = pipe_info->ce_hdl;
 
-	ce_ipa_get_resource(ce_hdl, ce_sr_base_paddr, ce_sr_ring_size,
+	ce_ipa_get_resource(ce_hdl, ce_sr, ce_sr_ring_size,
 			    ce_reg_paddr);
 }
 #endif /* IPA_OFFLOAD */

hif/src/ce/ce_main.h

@@ -195,13 +195,13 @@ hif_ce_dump_target_memory(struct hif_softc *scn, void *ramdump_base,
 
 #ifdef IPA_OFFLOAD
 void hif_ce_ipa_get_ce_resource(struct hif_softc *scn,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr);
 #else
 static inline
 void hif_ce_ipa_get_ce_resource(struct hif_softc *scn,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr)
 {

hif/src/ce/ce_service.c

@@ -2511,7 +2511,7 @@ qdf_export_symbol(ce_check_rx_pending);
 /**
  * ce_ipa_get_resource() - get uc resource on copyengine
  * @ce: copyengine context
- * @ce_sr_base_paddr: copyengine source ring base physical address
+ * @ce_sr: copyengine source ring resource info
  * @ce_sr_ring_size: copyengine source ring size
  * @ce_reg_paddr: copyengine register physical address
  *
@@ -2524,7 +2524,7 @@ qdf_export_symbol(ce_check_rx_pending);
  * Return: None
  */
 void ce_ipa_get_resource(struct CE_handle *ce,
-			 qdf_dma_addr_t *ce_sr_base_paddr,
+			 qdf_shared_mem_t **ce_sr,
 			 uint32_t *ce_sr_ring_size,
 			 qdf_dma_addr_t *ce_reg_paddr)
 {
@@ -2535,7 +2535,8 @@ void ce_ipa_get_resource(struct CE_handle *ce,
 	struct hif_softc *scn = CE_state->scn;
 
 	if (CE_UNUSED == CE_state->state) {
-		*ce_sr_base_paddr = 0;
+		*qdf_mem_get_dma_addr_ptr(scn->qdf_dev,
+			&CE_state->scn->ipa_ce_ring->mem_info) = 0;
 		*ce_sr_ring_size = 0;
 		return;
 	}
@@ -2552,7 +2553,7 @@ void ce_ipa_get_resource(struct CE_handle *ce,
 	/* Get BAR address */
 	hif_read_phy_mem_base(CE_state->scn, &phy_mem_base);
 
-	*ce_sr_base_paddr = CE_state->src_ring->base_addr_CE_space;
+	*ce_sr = CE_state->scn->ipa_ce_ring;
 	*ce_sr_ring_size = (uint32_t)(CE_state->src_ring->nentries *
 		sizeof(struct CE_src_desc));
 	*ce_reg_paddr = phy_mem_base + CE_BASE_ADDRESS(CE_state->id) +

hif/src/dispatcher/dummy.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -299,14 +299,14 @@ void hif_dummy_dump_target_memory(struct hif_softc *hif_sc, void *ramdump_base,
 /**
  * hif_dummy_ipa_get_ce_resource - dummy call
  * @scn: HIF context
- * @sr_base_paddr: source base address
+ * @ce_sr: copyengine source ring resource info
  * @sr_ring_size: source ring size
  * @reg_paddr: bus physical address
  *
  * Return: None
  */
 void hif_dummy_ipa_get_ce_resource(struct hif_softc *hif_sc,
-				   qdf_dma_addr_t *sr_base_paddr,
+				   qdf_shared_mem_t **ce_sr,
 				   uint32_t *sr_ring_size,
 				   qdf_dma_addr_t *reg_paddr)
 {

hif/src/dispatcher/dummy.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -56,7 +56,7 @@ int hif_dummy_dump_registers(struct hif_softc *hif_sc);
 void hif_dummy_dump_target_memory(struct hif_softc *hif_sc, void *ramdump_base,
 				  uint32_t address, uint32_t size);
 void hif_dummy_ipa_get_ce_resource(struct hif_softc *hif_sc,
-				   qdf_dma_addr_t *sr_base_paddr,
+				   qdf_shared_mem_t **ce_sr,
 				   uint32_t *sr_ring_size,
 				   qdf_dma_addr_t *reg_paddr);
 void hif_dummy_mask_interrupt_call(struct hif_softc *hif_sc);

hif/src/dispatcher/multibus.c

@@ -351,13 +351,13 @@ void hif_dump_target_memory(struct hif_opaque_softc *hif_hdl,
 }
 
 void hif_ipa_get_ce_resource(struct hif_opaque_softc *hif_hdl,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr)
 {
 	struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl);
 
-	hif_sc->bus_ops.hif_ipa_get_ce_resource(hif_sc, ce_sr_base_paddr,
+	hif_sc->bus_ops.hif_ipa_get_ce_resource(hif_sc, ce_sr,
 			ce_sr_ring_size, ce_reg_paddr);
 }
 

hif/src/dispatcher/multibus.h

@@ -74,7 +74,7 @@ struct hif_bus_ops {
 				       void *ramdump_base,
 				       uint32_t address, uint32_t size);
 	void (*hif_ipa_get_ce_resource)(struct hif_softc *hif_sc,
-					qdf_dma_addr_t *sr_base_paddr,
+					qdf_shared_mem_t **ce_sr,
 					uint32_t *sr_ring_size,
 					qdf_dma_addr_t *reg_paddr);
 	void (*hif_mask_interrupt_call)(struct hif_softc *hif_sc);

hif/src/hif_main.h

@@ -199,6 +199,9 @@ struct hif_softc {
 #if HIF_CE_DEBUG_DATA_BUF
 	struct ce_desc_hist hif_ce_desc_hist;
 #endif /* #if defined(HIF_CONFIG_SLUB_DEBUG_ON) || HIF_CE_DEBUG_DATA_BUF */
+#ifdef IPA_OFFLOAD
+	qdf_shared_mem_t *ipa_ce_ring;
+#endif
 };
 
 static inline void *hif_get_hal_handle(void *hif_hdl)

hif/src/snoc/if_snoc.c

@@ -237,12 +237,12 @@ static inline int hif_snoc_get_target_type(struct hif_softc *ol_sc,
 }
 
 #ifdef IPA_OFFLOAD
-static int hif_set_dma_coherent_mask(struct device *dev)
+static int hif_set_dma_coherent_mask(qdf_device_t osdev)
 {
 	uint8_t addr_bits;
 
 	if (false == hif_get_ipa_present())
-		return qdf_set_dma_coherent_mask(dev,
+		return qdf_set_dma_coherent_mask(osdev->dev,
 					DMA_COHERENT_MASK_IPA_VER_3_AND_ABOVE);
 
 	if (hif_get_ipa_hw_type() < IPA_HW_v3_0)
@@ -250,12 +250,12 @@ static int hif_set_dma_coherent_mask(struct device *dev)
 	else
 		addr_bits = DMA_COHERENT_MASK_IPA_VER_3_AND_ABOVE;
 
-	return qdf_set_dma_coherent_mask(dev, addr_bits);
+	return qdf_set_dma_coherent_mask(osdev->dev, addr_bits);
 }
 #else
-static int hif_set_dma_coherent_mask(struct device *dev)
+static int hif_set_dma_coherent_mask(qdf_device_t osdev)
 {
-	return qdf_set_dma_coherent_mask(dev, 37);
+	return qdf_set_dma_coherent_mask(osdev->dev, 37);
 }
 #endif
 
@@ -282,7 +282,7 @@ QDF_STATUS hif_snoc_enable_bus(struct hif_softc *ol_sc,
 		return QDF_STATUS_E_NOMEM;
 	}
 
-	ret = hif_set_dma_coherent_mask(dev);
+	ret = hif_set_dma_coherent_mask(ol_sc->qdf_dev);
 	if (ret) {
 		HIF_ERROR("%s: failed to set dma mask error = %d",
 				__func__, ret);

htc/htc.c

@@ -945,17 +945,15 @@ void *htc_get_targetdef(HTC_HANDLE htc_handle)
  * Return: None
  */
 void htc_ipa_get_ce_resource(HTC_HANDLE htc_handle,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr)
 {
 	HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle);
 
-	if (target->hif_dev != NULL) {
+	if (target->hif_dev)
 		hif_ipa_get_ce_resource(target->hif_dev,
-					ce_sr_base_paddr,
-					ce_sr_ring_size, ce_reg_paddr);
-	}
+					ce_sr, ce_sr_ring_size, ce_reg_paddr);
 }
 #endif /* IPA_OFFLOAD */
 

htc/htc_api.h

@@ -747,14 +747,12 @@ void htc_vote_link_down(HTC_HANDLE HTCHandle);
 void htc_vote_link_up(HTC_HANDLE HTCHandle);
 #ifdef IPA_OFFLOAD
 void htc_ipa_get_ce_resource(HTC_HANDLE htc_handle,
-			     qdf_dma_addr_t *ce_sr_base_paddr,
+			     qdf_shared_mem_t **ce_sr,
 			     uint32_t *ce_sr_ring_size,
 			     qdf_dma_addr_t *ce_reg_paddr);
 #else
 #define htc_ipa_get_ce_resource(htc_handle,                \
-			ce_sr_base_paddr,                  \
-			ce_sr_ring_size,                   \
-			ce_reg_paddr)                      /* NO-OP */
+			ce_sr, ce_sr_ring_size, ce_reg_paddr)     /* NO-OP */
 #endif /* IPA_OFFLOAD */
 
 #if defined(DEBUG_HL_LOGGING) && defined(CONFIG_HL_SUPPORT)