scsi: vmw_pscsi: switch to generic DMA API

Switch from the legacy PCI DMA API to the generic DMA API.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/vmw_pvscsi.c

@@ -372,9 +372,9 @@ static int pvscsi_map_buffers(struct pvscsi_adapter *adapter,
 			pvscsi_create_sg(ctx, sg, segs);
 
 			e->flags |= PVSCSI_FLAG_CMD_WITH_SG_LIST;
-			ctx->sglPA = pci_map_single(adapter->dev, ctx->sgl,
-						    SGL_SIZE, PCI_DMA_TODEVICE);
-			if (pci_dma_mapping_error(adapter->dev, ctx->sglPA)) {
+			ctx->sglPA = dma_map_single(&adapter->dev->dev,
+					ctx->sgl, SGL_SIZE, DMA_TO_DEVICE);
+			if (dma_mapping_error(&adapter->dev->dev, ctx->sglPA)) {
 				scmd_printk(KERN_ERR, cmd,
 					    "vmw_pvscsi: Failed to map ctx sglist for DMA.\n");
 				scsi_dma_unmap(cmd);
@@ -389,9 +389,9 @@ static int pvscsi_map_buffers(struct pvscsi_adapter *adapter,
 		 * In case there is no S/G list, scsi_sglist points
 		 * directly to the buffer.
 		 */
-		ctx->dataPA = pci_map_single(adapter->dev, sg, bufflen,
+		ctx->dataPA = dma_map_single(&adapter->dev->dev, sg, bufflen,
 					     cmd->sc_data_direction);
-		if (pci_dma_mapping_error(adapter->dev, ctx->dataPA)) {
+		if (dma_mapping_error(&adapter->dev->dev, ctx->dataPA)) {
 			scmd_printk(KERN_ERR, cmd,
 				    "vmw_pvscsi: Failed to map direct data buffer for DMA.\n");
 			return -ENOMEM;
@@ -417,23 +417,23 @@ static void pvscsi_unmap_buffers(const struct pvscsi_adapter *adapter,
 		if (count != 0) {
 			scsi_dma_unmap(cmd);
 			if (ctx->sglPA) {
-				pci_unmap_single(adapter->dev, ctx->sglPA,
-						 SGL_SIZE, PCI_DMA_TODEVICE);
+				dma_unmap_single(&adapter->dev->dev, ctx->sglPA,
+						 SGL_SIZE, DMA_TO_DEVICE);
 				ctx->sglPA = 0;
 			}
 		} else
-			pci_unmap_single(adapter->dev, ctx->dataPA, bufflen,
-					 cmd->sc_data_direction);
+			dma_unmap_single(&adapter->dev->dev, ctx->dataPA,
+					 bufflen, cmd->sc_data_direction);
 	}
 	if (cmd->sense_buffer)
-		pci_unmap_single(adapter->dev, ctx->sensePA,
-				 SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE);
+		dma_unmap_single(&adapter->dev->dev, ctx->sensePA,
+				 SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
 }
 
 static int pvscsi_allocate_rings(struct pvscsi_adapter *adapter)
 {
-	adapter->rings_state = pci_alloc_consistent(adapter->dev, PAGE_SIZE,
-						    &adapter->ringStatePA);
+	adapter->rings_state = dma_alloc_coherent(&adapter->dev->dev, PAGE_SIZE,
+			&adapter->ringStatePA, GFP_KERNEL);
 	if (!adapter->rings_state)
 		return -ENOMEM;
 
@@ -441,17 +441,17 @@ static int pvscsi_allocate_rings(struct pvscsi_adapter *adapter)
 				 pvscsi_ring_pages);
 	adapter->req_depth = adapter->req_pages
 					* PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE;
-	adapter->req_ring = pci_alloc_consistent(adapter->dev,
-						 adapter->req_pages * PAGE_SIZE,
-						 &adapter->reqRingPA);
+	adapter->req_ring = dma_alloc_coherent(&adapter->dev->dev,
+			adapter->req_pages * PAGE_SIZE, &adapter->reqRingPA,
+			GFP_KERNEL);
 	if (!adapter->req_ring)
 		return -ENOMEM;
 
 	adapter->cmp_pages = min(PVSCSI_MAX_NUM_PAGES_CMP_RING,
 				 pvscsi_ring_pages);
-	adapter->cmp_ring = pci_alloc_consistent(adapter->dev,
-						 adapter->cmp_pages * PAGE_SIZE,
-						 &adapter->cmpRingPA);
+	adapter->cmp_ring = dma_alloc_coherent(&adapter->dev->dev,
+			adapter->cmp_pages * PAGE_SIZE, &adapter->cmpRingPA,
+			GFP_KERNEL);
 	if (!adapter->cmp_ring)
 		return -ENOMEM;
 
@@ -464,9 +464,9 @@ static int pvscsi_allocate_rings(struct pvscsi_adapter *adapter)
 
 	adapter->msg_pages = min(PVSCSI_MAX_NUM_PAGES_MSG_RING,
 				 pvscsi_msg_ring_pages);
-	adapter->msg_ring = pci_alloc_consistent(adapter->dev,
-						 adapter->msg_pages * PAGE_SIZE,
-						 &adapter->msgRingPA);
+	adapter->msg_ring = dma_alloc_coherent(&adapter->dev->dev,
+			adapter->msg_pages * PAGE_SIZE, &adapter->msgRingPA,
+			GFP_KERNEL);
 	if (!adapter->msg_ring)
 		return -ENOMEM;
 	BUG_ON(!IS_ALIGNED(adapter->msgRingPA, PAGE_SIZE));
@@ -708,10 +708,10 @@ static int pvscsi_queue_ring(struct pvscsi_adapter *adapter,
 	e->lun[1] = sdev->lun;
 
 	if (cmd->sense_buffer) {
-		ctx->sensePA = pci_map_single(adapter->dev, cmd->sense_buffer,
-					      SCSI_SENSE_BUFFERSIZE,
-					      PCI_DMA_FROMDEVICE);
-		if (pci_dma_mapping_error(adapter->dev, ctx->sensePA)) {
+		ctx->sensePA = dma_map_single(&adapter->dev->dev,
+				cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE,
+				DMA_FROM_DEVICE);
+		if (dma_mapping_error(&adapter->dev->dev, ctx->sensePA)) {
 			scmd_printk(KERN_ERR, cmd,
 				    "vmw_pvscsi: Failed to map sense buffer for DMA.\n");
 			ctx->sensePA = 0;
@@ -740,9 +740,9 @@ static int pvscsi_queue_ring(struct pvscsi_adapter *adapter,
 
 	if (pvscsi_map_buffers(adapter, ctx, cmd, e) != 0) {
 		if (cmd->sense_buffer) {
-			pci_unmap_single(adapter->dev, ctx->sensePA,
+			dma_unmap_single(&adapter->dev->dev, ctx->sensePA,
 					 SCSI_SENSE_BUFFERSIZE,
-					 PCI_DMA_FROMDEVICE);
+					 DMA_FROM_DEVICE);
 			ctx->sensePA = 0;
 		}
 		return -ENOMEM;
@@ -1218,21 +1218,21 @@ static void pvscsi_release_resources(struct pvscsi_adapter *adapter)
 	}
 
 	if (adapter->rings_state)
-		pci_free_consistent(adapter->dev, PAGE_SIZE,
+		dma_free_coherent(&adapter->dev->dev, PAGE_SIZE,
 				    adapter->rings_state, adapter->ringStatePA);
 
 	if (adapter->req_ring)
-		pci_free_consistent(adapter->dev,
+		dma_free_coherent(&adapter->dev->dev,
 				    adapter->req_pages * PAGE_SIZE,
 				    adapter->req_ring, adapter->reqRingPA);
 
 	if (adapter->cmp_ring)
-		pci_free_consistent(adapter->dev,
+		dma_free_coherent(&adapter->dev->dev,
 				    adapter->cmp_pages * PAGE_SIZE,
 				    adapter->cmp_ring, adapter->cmpRingPA);
 
 	if (adapter->msg_ring)
-		pci_free_consistent(adapter->dev,
+		dma_free_coherent(&adapter->dev->dev,
 				    adapter->msg_pages * PAGE_SIZE,
 				    adapter->msg_ring, adapter->msgRingPA);
 }
@@ -1291,8 +1291,8 @@ static u32 pvscsi_get_max_targets(struct pvscsi_adapter *adapter)
 	u32 numPhys = 16;
 
 	dev = pvscsi_dev(adapter);
-	config_page = pci_alloc_consistent(adapter->dev, PAGE_SIZE,
-					   &configPagePA);
+	config_page = dma_alloc_coherent(&adapter->dev->dev, PAGE_SIZE,
+			&configPagePA, GFP_KERNEL);
 	if (!config_page) {
 		dev_warn(dev, "vmw_pvscsi: failed to allocate memory for config page\n");
 		goto exit;
@@ -1326,7 +1326,8 @@ static u32 pvscsi_get_max_targets(struct pvscsi_adapter *adapter)
 	} else
 		dev_warn(dev, "vmw_pvscsi: PVSCSI_CMD_CONFIG failed. hostStatus = 0x%x, scsiStatus = 0x%x\n",
 			 header->hostStatus, header->scsiStatus);
-	pci_free_consistent(adapter->dev, PAGE_SIZE, config_page, configPagePA);
+	dma_free_coherent(&adapter->dev->dev, PAGE_SIZE, config_page,
+			  configPagePA);
 exit:
 	return numPhys;
 }
@@ -1346,11 +1347,9 @@ static int pvscsi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (pci_enable_device(pdev))
 		return error;
 
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0 &&
-	    pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) {
+	if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
 		printk(KERN_INFO "vmw_pvscsi: using 64bit dma\n");
-	} else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) == 0 &&
-		   pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) == 0) {
+	} else if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
 		printk(KERN_INFO "vmw_pvscsi: using 32bit dma\n");
 	} else {
 		printk(KERN_ERR "vmw_pvscsi: failed to set DMA mask\n");