scsi: snic: 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/snic/snic_disc.c

@@ -111,8 +111,8 @@ snic_queue_report_tgt_req(struct snic *snic)
 
 	SNIC_BUG_ON((((unsigned long)buf) % SNIC_SG_DESC_ALIGN) != 0);
 
-	pa = pci_map_single(snic->pdev, buf, buf_len, PCI_DMA_FROMDEVICE);
-	if (pci_dma_mapping_error(snic->pdev, pa)) {
+	pa = dma_map_single(&snic->pdev->dev, buf, buf_len, DMA_FROM_DEVICE);
+	if (dma_mapping_error(&snic->pdev->dev, pa)) {
 		SNIC_HOST_ERR(snic->shost,
 			      "Rpt-tgt rspbuf %p: PCI DMA Mapping Failed\n",
 			      buf);
@@ -138,7 +138,8 @@ snic_queue_report_tgt_req(struct snic *snic)
 
 	ret = snic_queue_wq_desc(snic, rqi->req, rqi->req_len);
 	if (ret) {
-		pci_unmap_single(snic->pdev, pa, buf_len, PCI_DMA_FROMDEVICE);
+		dma_unmap_single(&snic->pdev->dev, pa, buf_len,
+				 DMA_FROM_DEVICE);
 		kfree(buf);
 		rqi->sge_va = 0;
 		snic_release_untagged_req(snic, rqi);

drivers/scsi/snic/snic_io.c

@@ -102,7 +102,8 @@ snic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
 	struct snic_req_info *rqi = NULL;
 	unsigned long flags;
 
-	pci_unmap_single(snic->pdev, buf->dma_addr, buf->len, PCI_DMA_TODEVICE);
+	dma_unmap_single(&snic->pdev->dev, buf->dma_addr, buf->len,
+			 DMA_TO_DEVICE);
 
 	rqi = req_to_rqi(req);
 	spin_lock_irqsave(&snic->spl_cmd_lock, flags);
@@ -172,8 +173,8 @@ snic_queue_wq_desc(struct snic *snic, void *os_buf, u16 len)
 	snic_print_desc(__func__, os_buf, len);
 
 	/* Map request buffer */
-	pa = pci_map_single(snic->pdev, os_buf, len, PCI_DMA_TODEVICE);
-	if (pci_dma_mapping_error(snic->pdev, pa)) {
+	pa = dma_map_single(&snic->pdev->dev, os_buf, len, DMA_TO_DEVICE);
+	if (dma_mapping_error(&snic->pdev->dev, pa)) {
 		SNIC_HOST_ERR(snic->shost, "qdesc: PCI DMA Mapping Fail.\n");
 
 		return -ENOMEM;
@@ -186,7 +187,7 @@ snic_queue_wq_desc(struct snic *snic, void *os_buf, u16 len)
 	spin_lock_irqsave(&snic->wq_lock[q_num], flags);
 	desc_avail = snic_wqdesc_avail(snic, q_num, req->hdr.type);
 	if (desc_avail <= 0) {
-		pci_unmap_single(snic->pdev, pa, len, PCI_DMA_TODEVICE);
+		dma_unmap_single(&snic->pdev->dev, pa, len, DMA_TO_DEVICE);
 		req->req_pa = 0;
 		spin_unlock_irqrestore(&snic->wq_lock[q_num], flags);
 		atomic64_inc(&snic->s_stats.misc.wq_alloc_fail);
@@ -350,29 +351,29 @@ snic_req_free(struct snic *snic, struct snic_req_info *rqi)
 
 	if (rqi->abort_req) {
 		if (rqi->abort_req->req_pa)
-			pci_unmap_single(snic->pdev,
+			dma_unmap_single(&snic->pdev->dev,
 					 rqi->abort_req->req_pa,
 					 sizeof(struct snic_host_req),
-					 PCI_DMA_TODEVICE);
+					 DMA_TO_DEVICE);
 
 		mempool_free(rqi->abort_req, snic->req_pool[SNIC_REQ_TM_CACHE]);
 	}
 
 	if (rqi->dr_req) {
 		if (rqi->dr_req->req_pa)
-			pci_unmap_single(snic->pdev,
+			dma_unmap_single(&snic->pdev->dev,
 					 rqi->dr_req->req_pa,
 					 sizeof(struct snic_host_req),
-					 PCI_DMA_TODEVICE);
+					 DMA_TO_DEVICE);
 
 		mempool_free(rqi->dr_req, snic->req_pool[SNIC_REQ_TM_CACHE]);
 	}
 
 	if (rqi->req->req_pa)
-		pci_unmap_single(snic->pdev,
+		dma_unmap_single(&snic->pdev->dev,
 				 rqi->req->req_pa,
 				 rqi->req_len,
-				 PCI_DMA_TODEVICE);
+				 DMA_TO_DEVICE);
 
 	mempool_free(rqi, snic->req_pool[rqi->rq_pool_type]);
 }
@@ -384,10 +385,10 @@ snic_pci_unmap_rsp_buf(struct snic *snic, struct snic_req_info *rqi)
 
 	sgd = req_to_sgl(rqi_to_req(rqi));
 	SNIC_BUG_ON(sgd[0].addr == 0);
-	pci_unmap_single(snic->pdev,
+	dma_unmap_single(&snic->pdev->dev,
 			 le64_to_cpu(sgd[0].addr),
 			 le32_to_cpu(sgd[0].len),
-			 PCI_DMA_FROMDEVICE);
+			 DMA_FROM_DEVICE);
 }
 
 /*

drivers/scsi/snic/snic_main.c

@@ -435,37 +435,17 @@ snic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * limitation for the device. Try 43-bit first, and
 	 * fail to 32-bit.
 	 */
-	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(43));
+	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(43));
 	if (ret) {
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 		if (ret) {
 			SNIC_HOST_ERR(shost,
 				      "No Usable DMA Configuration, aborting %d\n",
 				      ret);
-
-			goto err_rel_regions;
-		}
-
-		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (ret) {
-			SNIC_HOST_ERR(shost,
-				      "Unable to obtain 32-bit DMA for consistent allocations, aborting: %d\n",
-				      ret);
-
-			goto err_rel_regions;
-		}
-	} else {
-		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(43));
-		if (ret) {
-			SNIC_HOST_ERR(shost,
-				      "Unable to obtain 43-bit DMA for consistent allocations. aborting: %d\n",
-				      ret);
-
 			goto err_rel_regions;
 		}
 	}
 
-
 	/* Map vNIC resources from BAR0 */
 	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 		SNIC_HOST_ERR(shost, "BAR0 not memory mappable aborting.\n");

drivers/scsi/snic/snic_scsi.c

@@ -146,10 +146,10 @@ snic_release_req_buf(struct snic *snic,
 		      CMD_FLAGS(sc));
 
 	if (req->u.icmnd.sense_addr)
-		pci_unmap_single(snic->pdev,
+		dma_unmap_single(&snic->pdev->dev,
 				 le64_to_cpu(req->u.icmnd.sense_addr),
 				 SCSI_SENSE_BUFFERSIZE,
-				 PCI_DMA_FROMDEVICE);
+				 DMA_FROM_DEVICE);
 
 	scsi_dma_unmap(sc);
 
@@ -185,12 +185,11 @@ snic_queue_icmnd_req(struct snic *snic,
 		}
 	}
 
-	pa = pci_map_single(snic->pdev,
+	pa = dma_map_single(&snic->pdev->dev,
 			    sc->sense_buffer,
 			    SCSI_SENSE_BUFFERSIZE,
-			    PCI_DMA_FROMDEVICE);
-
-	if (pci_dma_mapping_error(snic->pdev, pa)) {
+			    DMA_FROM_DEVICE);
+	if (dma_mapping_error(&snic->pdev->dev, pa)) {
 		SNIC_HOST_ERR(snic->shost,
 			      "QIcmnd:PCI Map Failed for sns buf %p tag %x\n",
 			      sc->sense_buffer, snic_cmd_tag(sc));

drivers/scsi/snic/vnic_dev.c

@@ -225,10 +225,9 @@ int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 {
 	svnic_dev_desc_ring_size(ring, desc_count, desc_size);
 
-	ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
-		ring->size_unaligned,
-		&ring->base_addr_unaligned);
-
+	ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev,
+			ring->size_unaligned, &ring->base_addr_unaligned,
+			GFP_KERNEL);
 	if (!ring->descs_unaligned) {
 		pr_err("Failed to allocate ring (size=%d), aborting\n",
 			(int)ring->size);
@@ -251,7 +250,7 @@ int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
 void svnic_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);
@@ -470,9 +469,9 @@ int svnic_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;
 
@@ -534,8 +533,8 @@ int svnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
 	int wait = VNIC_DVCMD_TMO;
 
 	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;
 	}
@@ -607,9 +606,9 @@ int svnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
 	int wait = VNIC_DVCMD_TMO;
 
 	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;
 	}
@@ -697,21 +696,21 @@ void svnic_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);
 		if (vdev->devcmd2)