scsi: fnic: switch to generic DMA API

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

drivers/scsi/fnic/fnic_fcs.c

@@ -836,8 +836,8 @@ static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
 	u32 fcp_bytes_written = 0;
 	unsigned long flags;
 
-	pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
-			 PCI_DMA_FROMDEVICE);
+	dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
+			 DMA_FROM_DEVICE);
 	skb = buf->os_buf;
 	fp = (struct fc_frame *)skb;
 	buf->os_buf = NULL;
@@ -977,9 +977,8 @@ int fnic_alloc_rq_frame(struct vnic_rq *rq)
 	skb_reset_transport_header(skb);
 	skb_reset_network_header(skb);
 	skb_put(skb, len);
-	pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE);
-
-	if (pci_dma_mapping_error(fnic->pdev, pa)) {
+	pa = dma_map_single(&fnic->pdev->dev, skb->data, len, DMA_FROM_DEVICE);
+	if (dma_mapping_error(&fnic->pdev->dev, pa)) {
 		r = -ENOMEM;
 		printk(KERN_ERR "PCI mapping failed with error %d\n", r);
 		goto free_skb;
@@ -998,8 +997,8 @@ void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
 	struct fc_frame *fp = buf->os_buf;
 	struct fnic *fnic = vnic_dev_priv(rq->vdev);
 
-	pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
-			 PCI_DMA_FROMDEVICE);
+	dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
+			 DMA_FROM_DEVICE);
 
 	dev_kfree_skb(fp_skb(fp));
 	buf->os_buf = NULL;
@@ -1018,7 +1017,6 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
 	struct ethhdr *eth_hdr;
 	struct vlan_ethhdr *vlan_hdr;
 	unsigned long flags;
-	int r;
 
 	if (!fnic->vlan_hw_insert) {
 		eth_hdr = (struct ethhdr *)skb_mac_header(skb);
@@ -1038,11 +1036,10 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
 		}
 	}
 
-	pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
-
-	r = pci_dma_mapping_error(fnic->pdev, pa);
-	if (r) {
-		printk(KERN_ERR "PCI mapping failed with error %d\n", r);
+	pa = dma_map_single(&fnic->pdev->dev, skb->data, skb->len,
+			DMA_TO_DEVICE);
+	if (dma_mapping_error(&fnic->pdev->dev, pa)) {
+		printk(KERN_ERR "DMA mapping failed\n");
 		goto free_skb;
 	}
 
@@ -1058,7 +1055,7 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
 
 irq_restore:
 	spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
-	pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE);
+	dma_unmap_single(&fnic->pdev->dev, pa, skb->len, DMA_TO_DEVICE);
 free_skb:
 	kfree_skb(skb);
 }
@@ -1115,9 +1112,8 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
 	if (FC_FCOE_VER)
 		FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER);
 
-	pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
-
-	if (pci_dma_mapping_error(fnic->pdev, pa)) {
+	pa = dma_map_single(&fnic->pdev->dev, eth_hdr, tot_len, DMA_TO_DEVICE);
+	if (dma_mapping_error(&fnic->pdev->dev, pa)) {
 		ret = -ENOMEM;
 		printk(KERN_ERR "DMA map failed with error %d\n", ret);
 		goto free_skb_on_err;
@@ -1131,8 +1127,7 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
 	spin_lock_irqsave(&fnic->wq_lock[0], flags);
 
 	if (!vnic_wq_desc_avail(wq)) {
-		pci_unmap_single(fnic->pdev, pa,
-				 tot_len, PCI_DMA_TODEVICE);
+		dma_unmap_single(&fnic->pdev->dev, pa, tot_len, DMA_TO_DEVICE);
 		ret = -1;
 		goto irq_restore;
 	}
@@ -1247,8 +1242,8 @@ static void fnic_wq_complete_frame_send(struct vnic_wq *wq,
 	struct fc_frame *fp = (struct fc_frame *)skb;
 	struct fnic *fnic = vnic_dev_priv(wq->vdev);
 
-	pci_unmap_single(fnic->pdev, buf->dma_addr,
-			 buf->len, PCI_DMA_TODEVICE);
+	dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
+			 DMA_TO_DEVICE);
 	dev_kfree_skb_irq(fp_skb(fp));
 	buf->os_buf = NULL;
 }
@@ -1290,8 +1285,8 @@ void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
 	struct fc_frame *fp = buf->os_buf;
 	struct fnic *fnic = vnic_dev_priv(wq->vdev);
 
-	pci_unmap_single(fnic->pdev, buf->dma_addr,
-			 buf->len, PCI_DMA_TODEVICE);
+	dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
+			 DMA_TO_DEVICE);
 
 	dev_kfree_skb(fp_skb(fp));
 	buf->os_buf = NULL;

drivers/scsi/fnic/fnic_main.c

@@ -611,30 +611,15 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * limitation for the device.  Try 64-bit first, and
 	 * fail to 32-bit.
 	 */
-	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 	if (err) {
-		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 		if (err) {
 			shost_printk(KERN_ERR, fnic->lport->host,
 				     "No usable DMA configuration "
 				     "aborting\n");
 			goto err_out_release_regions;
 		}
-		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (err) {
-			shost_printk(KERN_ERR, fnic->lport->host,
-				     "Unable to obtain 32-bit DMA "
-				     "for consistent allocations, aborting.\n");
-			goto err_out_release_regions;
-		}
-	} else {
-		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-		if (err) {
-			shost_printk(KERN_ERR, fnic->lport->host,
-				     "Unable to obtain 64-bit DMA "
-				     "for consistent allocations, aborting.\n");
-			goto err_out_release_regions;
-		}
 	}
 
 	/* Map vNIC resources from BAR0 */

drivers/scsi/fnic/fnic_scsi.c

@@ -126,17 +126,17 @@ static void fnic_release_ioreq_buf(struct fnic *fnic,
 				   struct scsi_cmnd *sc)
 {
 	if (io_req->sgl_list_pa)
-		pci_unmap_single(fnic->pdev, io_req->sgl_list_pa,
+		dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa,
 				 sizeof(io_req->sgl_list[0]) * io_req->sgl_cnt,
-				 PCI_DMA_TODEVICE);
+				 DMA_TO_DEVICE);
 	scsi_dma_unmap(sc);
 
 	if (io_req->sgl_cnt)
 		mempool_free(io_req->sgl_list_alloc,
 			     fnic->io_sgl_pool[io_req->sgl_type]);
 	if (io_req->sense_buf_pa)
-		pci_unmap_single(fnic->pdev, io_req->sense_buf_pa,
-				 SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE);
+		dma_unmap_single(&fnic->pdev->dev, io_req->sense_buf_pa,
+				 SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
 }
 
 /* Free up Copy Wq descriptors. Called with copy_wq lock held */
@@ -330,7 +330,6 @@ static inline int fnic_queue_wq_copy_desc(struct fnic *fnic,
 	int flags;
 	u8 exch_flags;
 	struct scsi_lun fc_lun;
-	int r;
 
 	if (sg_count) {
 		/* For each SGE, create a device desc entry */
@@ -342,30 +341,25 @@ static inline int fnic_queue_wq_copy_desc(struct fnic *fnic,
 			desc++;
 		}
 
-		io_req->sgl_list_pa = pci_map_single
-			(fnic->pdev,
+		io_req->sgl_list_pa = dma_map_single(&fnic->pdev->dev,
 				io_req->sgl_list,
 				sizeof(io_req->sgl_list[0]) * sg_count,
-			 PCI_DMA_TODEVICE);
-
-		r = pci_dma_mapping_error(fnic->pdev, io_req->sgl_list_pa);
-		if (r) {
-			printk(KERN_ERR "PCI mapping failed with error %d\n", r);
+				DMA_TO_DEVICE);
+		if (dma_mapping_error(&fnic->pdev->dev, io_req->sgl_list_pa)) {
+			printk(KERN_ERR "DMA mapping failed\n");
 			return SCSI_MLQUEUE_HOST_BUSY;
 		}
 	}
 
-	io_req->sense_buf_pa = pci_map_single(fnic->pdev,
+	io_req->sense_buf_pa = dma_map_single(&fnic->pdev->dev,
 					      sc->sense_buffer,
 					      SCSI_SENSE_BUFFERSIZE,
-					      PCI_DMA_FROMDEVICE);
-
-	r = pci_dma_mapping_error(fnic->pdev, io_req->sense_buf_pa);
-	if (r) {
-		pci_unmap_single(fnic->pdev, io_req->sgl_list_pa,
+					      DMA_FROM_DEVICE);
+	if (dma_mapping_error(&fnic->pdev->dev, io_req->sense_buf_pa)) {
+		dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa,
 				sizeof(io_req->sgl_list[0]) * sg_count,
-				PCI_DMA_TODEVICE);
-		printk(KERN_ERR "PCI mapping failed with error %d\n", r);
+				DMA_TO_DEVICE);
+		printk(KERN_ERR "DMA mapping failed\n");
 		return SCSI_MLQUEUE_HOST_BUSY;
 	}
 

drivers/scsi/fnic/vnic_dev.c

@@ -195,9 +195,9 @@ int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 {
 	vnic_dev_desc_ring_size(ring, desc_count, desc_size);
 
-	ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
+	ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev,
 		ring->size_unaligned,
-		&ring->base_addr_unaligned);
+		&ring->base_addr_unaligned, GFP_KERNEL);
 
 	if (!ring->descs_unaligned) {
 		printk(KERN_ERR
@@ -221,7 +221,7 @@ int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
 {
 	if (ring->descs) {
-		pci_free_consistent(vdev->pdev,
+		dma_free_coherent(&vdev->pdev->dev,
 			ring->size_unaligned,
 			ring->descs_unaligned,
 			ring->base_addr_unaligned);
@@ -298,9 +298,9 @@ int vnic_dev_fw_info(struct vnic_dev *vdev,
 	int err = 0;
 
 	if (!vdev->fw_info) {
-		vdev->fw_info = pci_alloc_consistent(vdev->pdev,
+		vdev->fw_info = dma_alloc_coherent(&vdev->pdev->dev,
 			sizeof(struct vnic_devcmd_fw_info),
-			&vdev->fw_info_pa);
+			&vdev->fw_info_pa, GFP_KERNEL);
 		if (!vdev->fw_info)
 			return -ENOMEM;
 
@@ -361,8 +361,8 @@ int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 	int wait = 1000;
 
 	if (!vdev->stats) {
-		vdev->stats = pci_alloc_consistent(vdev->pdev,
-			sizeof(struct vnic_stats), &vdev->stats_pa);
+		vdev->stats = dma_alloc_coherent(&vdev->pdev->dev,
+			sizeof(struct vnic_stats), &vdev->stats_pa, GFP_KERNEL);
 		if (!vdev->stats)
 			return -ENOMEM;
 	}
@@ -523,9 +523,9 @@ int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 	int wait = 1000;
 
 	if (!vdev->notify) {
-		vdev->notify = pci_alloc_consistent(vdev->pdev,
+		vdev->notify = dma_alloc_coherent(&vdev->pdev->dev,
 			sizeof(struct vnic_devcmd_notify),
-			&vdev->notify_pa);
+			&vdev->notify_pa, GFP_KERNEL);
 		if (!vdev->notify)
 			return -ENOMEM;
 	}
@@ -647,21 +647,21 @@ void vnic_dev_unregister(struct vnic_dev *vdev)
 {
 	if (vdev) {
 		if (vdev->notify)
-			pci_free_consistent(vdev->pdev,
+			dma_free_coherent(&vdev->pdev->dev,
 				sizeof(struct vnic_devcmd_notify),
 				vdev->notify,
 				vdev->notify_pa);
 		if (vdev->linkstatus)
-			pci_free_consistent(vdev->pdev,
+			dma_free_coherent(&vdev->pdev->dev,
 				sizeof(u32),
 				vdev->linkstatus,
 				vdev->linkstatus_pa);
 		if (vdev->stats)
-			pci_free_consistent(vdev->pdev,
+			dma_free_coherent(&vdev->pdev->dev,
 				sizeof(struct vnic_stats),
 				vdev->stats, vdev->stats_pa);
 		if (vdev->fw_info)
-			pci_free_consistent(vdev->pdev,
+			dma_free_coherent(&vdev->pdev->dev,
 				sizeof(struct vnic_devcmd_fw_info),
 				vdev->fw_info, vdev->fw_info_pa);
 		kfree(vdev);