RDMA: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.

It has been hand modified to use 'dma_set_mask_and_coherent()' instead of
'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
This is less verbose.

It has been compile tested.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Link: https://lore.kernel.org/r/259e53b7a00f64bf081d41da8761b171b2ad8f5c.1629634798.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

3 files changed, 27 insertions, 34 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
index 2cdf686203c1..97287c544da8 100644
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -617,9 +617,9 @@ static void mthca_free_eq(struct mthca_dev *dev,
 
 	mthca_free_mr(dev, &eq->mr);
 	for (i = 0; i < npages; ++i)
-		pci_free_consistent(dev->pdev, PAGE_SIZE,
-				    eq->page_list[i].buf,
-				    dma_unmap_addr(&eq->page_list[i], mapping));
+		dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+				  eq->page_list[i].buf,
+				  dma_unmap_addr(&eq->page_list[i], mapping));
 
 	kfree(eq->page_list);
 	mthca_free_mailbox(dev, mailbox);
@@ -739,17 +739,18 @@ int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt)
 	dev->eq_table.icm_page = alloc_page(GFP_HIGHUSER);
 	if (!dev->eq_table.icm_page)
 		return -ENOMEM;
-	dev->eq_table.icm_dma  = pci_map_page(dev->pdev, dev->eq_table.icm_page, 0,
-					      PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
-	if (pci_dma_mapping_error(dev->pdev, dev->eq_table.icm_dma)) {
+	dev->eq_table.icm_dma =
+		dma_map_page(&dev->pdev->dev, dev->eq_table.icm_page, 0,
+			     PAGE_SIZE, DMA_BIDIRECTIONAL);
+	if (dma_mapping_error(&dev->pdev->dev, dev->eq_table.icm_dma)) {
 		__free_page(dev->eq_table.icm_page);
 		return -ENOMEM;
 	}
 
 	ret = mthca_MAP_ICM_page(dev, dev->eq_table.icm_dma, icm_virt);
 	if (ret) {
-		pci_unmap_page(dev->pdev, dev->eq_table.icm_dma, PAGE_SIZE,
-			       PCI_DMA_BIDIRECTIONAL);
+		dma_unmap_page(&dev->pdev->dev, dev->eq_table.icm_dma,
+			       PAGE_SIZE, DMA_BIDIRECTIONAL);
 		__free_page(dev->eq_table.icm_page);
 	}
 
@@ -759,8 +760,8 @@ int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt)
 void mthca_unmap_eq_icm(struct mthca_dev *dev)
 {
 	mthca_UNMAP_ICM(dev, dev->eq_table.icm_virt, 1);
-	pci_unmap_page(dev->pdev, dev->eq_table.icm_dma, PAGE_SIZE,
-		       PCI_DMA_BIDIRECTIONAL);
+	dma_unmap_page(&dev->pdev->dev, dev->eq_table.icm_dma, PAGE_SIZE,
+		       DMA_BIDIRECTIONAL);
 	__free_page(dev->eq_table.icm_page);
 }
 
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index fe9654a7af71..f507c4cd46d3 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -937,26 +937,15 @@ static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
 
 	pci_set_master(pdev);
 
-	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 	if (err) {
 		dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
-		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 		if (err) {
 			dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
 			goto err_free_res;
 		}
 	}
-	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (err) {
-		dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
-			 "consistent PCI DMA mask.\n");
-		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (err) {
-			dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
-				"aborting.\n");
-			goto err_free_res;
-		}
-	}
 
 	/* We can handle large RDMA requests, so allow larger segments. */
 	dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index fa808582b08b..f2734a5c5f26 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -66,8 +66,8 @@ static void mthca_free_icm_pages(struct mthca_dev *dev, struct mthca_icm_chunk *
 	int i;
 
 	if (chunk->nsg > 0)
-		pci_unmap_sg(dev->pdev, chunk->mem, chunk->npages,
-			     PCI_DMA_BIDIRECTIONAL);
+		dma_unmap_sg(&dev->pdev->dev, chunk->mem, chunk->npages,
+			     DMA_BIDIRECTIONAL);
 
 	for (i = 0; i < chunk->npages; ++i)
 		__free_pages(sg_page(&chunk->mem[i]),
@@ -184,9 +184,10 @@ struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages,
 			if (coherent)
 				++chunk->nsg;
 			else if (chunk->npages == MTHCA_ICM_CHUNK_LEN) {
-				chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
-							chunk->npages,
-							PCI_DMA_BIDIRECTIONAL);
+				chunk->nsg =
+					dma_map_sg(&dev->pdev->dev, chunk->mem,
+						   chunk->npages,
+						   DMA_BIDIRECTIONAL);
 
 				if (chunk->nsg <= 0)
 					goto fail;
@@ -204,9 +205,8 @@ struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages,
 	}
 
 	if (!coherent && chunk) {
-		chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
-					chunk->npages,
-					PCI_DMA_BIDIRECTIONAL);
+		chunk->nsg = dma_map_sg(&dev->pdev->dev, chunk->mem,
+					chunk->npages, DMA_BIDIRECTIONAL);
 
 		if (chunk->nsg <= 0)
 			goto fail;
@@ -480,7 +480,8 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 	sg_set_page(&db_tab->page[i].mem, pages[0], MTHCA_ICM_PAGE_SIZE,
 			uaddr & ~PAGE_MASK);
 
-	ret = pci_map_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
+	ret = dma_map_sg(&dev->pdev->dev, &db_tab->page[i].mem, 1,
+			 DMA_TO_DEVICE);
 	if (ret < 0) {
 		unpin_user_page(pages[0]);
 		goto out;
@@ -489,7 +490,8 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
 	ret = mthca_MAP_ICM_page(dev, sg_dma_address(&db_tab->page[i].mem),
 				 mthca_uarc_virt(dev, uar, i));
 	if (ret) {
-		pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
+		dma_unmap_sg(&dev->pdev->dev, &db_tab->page[i].mem, 1,
+			     DMA_TO_DEVICE);
 		unpin_user_page(sg_page(&db_tab->page[i].mem));
 		goto out;
 	}
@@ -555,7 +557,8 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
 	for (i = 0; i < dev->uar_table.uarc_size / MTHCA_ICM_PAGE_SIZE; ++i) {
 		if (db_tab->page[i].uvirt) {
 			mthca_UNMAP_ICM(dev, mthca_uarc_virt(dev, uar, i), 1);
-			pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
+			dma_unmap_sg(&dev->pdev->dev, &db_tab->page[i].mem, 1,
+				     DMA_TO_DEVICE);
 			unpin_user_page(sg_page(&db_tab->page[i].mem));
 		}
 	}