scsi: mvumi: switch to generic DMA API

Switch from the legacy PCI DMA API to the generic DMA API.

Also reuse an existing helper (after fixing the error return) to set the
DMA mask instead of having three copies of the code.

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/mvumi.c

@@ -143,8 +143,8 @@ static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
 
 	case RESOURCE_UNCACHED_MEMORY:
 		size = round_up(size, 8);
-		res->virt_addr = pci_zalloc_consistent(mhba->pdev, size,
-						       &res->bus_addr);
+		res->virt_addr = dma_zalloc_coherent(&mhba->pdev->dev, size,
+				&res->bus_addr, GFP_KERNEL);
 		if (!res->virt_addr) {
 			dev_err(&mhba->pdev->dev,
 					"unable to allocate consistent mem,"
@@ -175,7 +175,7 @@ static void mvumi_release_mem_resource(struct mvumi_hba *mhba)
 	list_for_each_entry_safe(res, tmp, &mhba->res_list, entry) {
 		switch (res->type) {
 		case RESOURCE_UNCACHED_MEMORY:
-			pci_free_consistent(mhba->pdev, res->size,
+			dma_free_coherent(&mhba->pdev->dev, res->size,
 						res->virt_addr, res->bus_addr);
 			break;
 		case RESOURCE_CACHED_MEMORY:
@@ -211,14 +211,14 @@ static int mvumi_make_sgl(struct mvumi_hba *mhba, struct scsi_cmnd *scmd,
 	dma_addr_t busaddr;
 
 	sg = scsi_sglist(scmd);
-	*sg_count = pci_map_sg(mhba->pdev, sg, sgnum,
-			       (int) scmd->sc_data_direction);
+	*sg_count = dma_map_sg(&mhba->pdev->dev, sg, sgnum,
+			       scmd->sc_data_direction);
 	if (*sg_count > mhba->max_sge) {
 		dev_err(&mhba->pdev->dev,
 			"sg count[0x%x] is bigger than max sg[0x%x].\n",
 			*sg_count, mhba->max_sge);
-		pci_unmap_sg(mhba->pdev, sg, sgnum,
-			     (int) scmd->sc_data_direction);
+		dma_unmap_sg(&mhba->pdev->dev, sg, sgnum,
+			     scmd->sc_data_direction);
 		return -1;
 	}
 	for (i = 0; i < *sg_count; i++) {
@@ -246,7 +246,8 @@ static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
 	if (size == 0)
 		return 0;
 
-	virt_addr = pci_zalloc_consistent(mhba->pdev, size, &phy_addr);
+	virt_addr = dma_zalloc_coherent(&mhba->pdev->dev, size, &phy_addr,
+			GFP_KERNEL);
 	if (!virt_addr)
 		return -1;
 
@@ -274,8 +275,8 @@ static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
 	}
 	INIT_LIST_HEAD(&cmd->queue_pointer);
 
-	cmd->frame = pci_alloc_consistent(mhba->pdev,
-				mhba->ib_max_size, &cmd->frame_phys);
+	cmd->frame = dma_alloc_coherent(&mhba->pdev->dev, mhba->ib_max_size,
+			&cmd->frame_phys, GFP_KERNEL);
 	if (!cmd->frame) {
 		dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
 			" frame,size = %d.\n", mhba->ib_max_size);
@@ -287,7 +288,7 @@ static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
 		if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
 			dev_err(&mhba->pdev->dev, "failed to allocate memory"
 						" for internal frame\n");
-			pci_free_consistent(mhba->pdev, mhba->ib_max_size,
+			dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
 					cmd->frame, cmd->frame_phys);
 			kfree(cmd);
 			return NULL;
@@ -313,10 +314,10 @@ static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
 			phy_addr = (dma_addr_t) m_sg->baseaddr_l |
 				(dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
 
-			pci_free_consistent(mhba->pdev, size, cmd->data_buf,
+			dma_free_coherent(&mhba->pdev->dev, size, cmd->data_buf,
 								phy_addr);
 		}
-		pci_free_consistent(mhba->pdev, mhba->ib_max_size,
+		dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
 				cmd->frame, cmd->frame_phys);
 		kfree(cmd);
 	}
@@ -663,16 +664,17 @@ static void mvumi_restore_bar_addr(struct mvumi_hba *mhba)
 	}
 }
 
-static unsigned int mvumi_pci_set_master(struct pci_dev *pdev)
+static int mvumi_pci_set_master(struct pci_dev *pdev)
 {
-	unsigned int ret = 0;
+	int ret = 0;
+
 	pci_set_master(pdev);
 
 	if (IS_DMA64) {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
-			ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
+			ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 	} else
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	return ret;
 }
@@ -771,7 +773,7 @@ static void mvumi_release_fw(struct mvumi_hba *mhba)
 	mvumi_free_cmds(mhba);
 	mvumi_release_mem_resource(mhba);
 	mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
-	pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
+	dma_free_coherent(&mhba->pdev->dev, HSP_MAX_SIZE,
 		mhba->handshake_page, mhba->handshake_page_phys);
 	kfree(mhba->regs);
 	pci_release_regions(mhba->pdev);
@@ -1339,9 +1341,9 @@ static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
 	}
 
 	if (scsi_bufflen(scmd))
-		pci_unmap_sg(mhba->pdev, scsi_sglist(scmd),
+		dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd),
 			     scsi_sg_count(scmd),
-			     (int) scmd->sc_data_direction);
+			     scmd->sc_data_direction);
 	cmd->scmd->scsi_done(scmd);
 	mvumi_return_cmd(mhba, cmd);
 }
@@ -2148,9 +2150,9 @@ static enum blk_eh_timer_return mvumi_timed_out(struct scsi_cmnd *scmd)
 	scmd->result = (DRIVER_INVALID << 24) | (DID_ABORT << 16);
 	scmd->SCp.ptr = NULL;
 	if (scsi_bufflen(scmd)) {
-		pci_unmap_sg(mhba->pdev, scsi_sglist(scmd),
+		dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd),
 			     scsi_sg_count(scmd),
-			     (int)scmd->sc_data_direction);
+			     scmd->sc_data_direction);
 	}
 	mvumi_return_cmd(mhba, cmd);
 	spin_unlock_irqrestore(mhba->shost->host_lock, flags);
@@ -2362,8 +2364,8 @@ static int mvumi_init_fw(struct mvumi_hba *mhba)
 		ret = -ENOMEM;
 		goto fail_alloc_mem;
 	}
-	mhba->handshake_page = pci_alloc_consistent(mhba->pdev, HSP_MAX_SIZE,
-						&mhba->handshake_page_phys);
+	mhba->handshake_page = dma_alloc_coherent(&mhba->pdev->dev,
+			HSP_MAX_SIZE, &mhba->handshake_page_phys, GFP_KERNEL);
 	if (!mhba->handshake_page) {
 		dev_err(&mhba->pdev->dev,
 			"failed to allocate memory for handshake\n");
@@ -2383,7 +2385,7 @@ static int mvumi_init_fw(struct mvumi_hba *mhba)
 
 fail_ready_state:
 	mvumi_release_mem_resource(mhba);
-	pci_free_consistent(mhba->pdev, HSP_MAX_SIZE,
+	dma_free_coherent(&mhba->pdev->dev, HSP_MAX_SIZE,
 		mhba->handshake_page, mhba->handshake_page_phys);
 fail_alloc_page:
 	kfree(mhba->regs);
@@ -2480,20 +2482,9 @@ static int mvumi_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (ret)
 		return ret;
 
-	pci_set_master(pdev);
-
-	if (IS_DMA64) {
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-		if (ret) {
-			ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-			if (ret)
-				goto fail_set_dma_mask;
-		}
-	} else {
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (ret)
-			goto fail_set_dma_mask;
-	}
+	ret = mvumi_pci_set_master(pdev);
+	if (ret)
+		goto fail_set_dma_mask;
 
 	host = scsi_host_alloc(&mvumi_template, sizeof(*mhba));
 	if (!host) {
@@ -2627,19 +2618,11 @@ static int __maybe_unused mvumi_resume(struct pci_dev *pdev)
 		dev_err(&pdev->dev, "enable device failed\n");
 		return ret;
 	}
-	pci_set_master(pdev);
-	if (IS_DMA64) {
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-		if (ret) {
-			ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-			if (ret)
-				goto fail;
-		}
-	} else {
-		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (ret)
-			goto fail;
-	}
+
+	ret = mvumi_pci_set_master(pdev);
+	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (ret)
+		goto fail;
 	ret = pci_request_regions(mhba->pdev, MV_DRIVER_NAME);
 	if (ret)
 		goto fail;