[PATCH 5.4 158/224] net: dl2k: switch from pci_ to dma_ API

27 Oct 2025

5.4-stable review patch.  If anyone has any objections, please let me know.
------------------
From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit b49db89e9697ddfa7fbe7387e176072ee2feb2db ]
The wrappers in include/linux/pci-dma-compat.h should go away.
The patch has been generated with the coccinelle script below and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.
When memory is allocated in 'rio_probe1()' GFP_KERNEL can be used because
it is a probe function and no lock is taken in the between.
@@
@@
-    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)
Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr
Signed-off-by: David S. Miller davem@davemloft.net
Stable-dep-of: 65946eac6d88 ("net: dlink: handle dma_map_single() failure properly")
Signed-off-by: Sasha Levin sashal@kernel.org
---
 drivers/net/ethernet/dlink/dl2k.c | 80 ++++++++++++++++---------------
 1 file changed, 41 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/dlink/dl2k.c b/drivers/net/ethernet/dlink/dl2k.c
index b4a8d4f12087a..8597648156635 100644
--- a/drivers/net/ethernet/dlink/dl2k.c
+++ b/drivers/net/ethernet/dlink/dl2k.c
@@ -233,13 +233,15 @@ rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_drvdata (pdev, dev);
-	ring_space = pci_alloc_consistent (pdev, TX_TOTAL_SIZE, &ring_dma);
+	ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma,
+					GFP_KERNEL);
    if (!ring_space)
    	goto err_out_iounmap;
    np->tx_ring = ring_space;
    np->tx_ring_dma = ring_dma;
-	ring_space = pci_alloc_consistent (pdev, RX_TOTAL_SIZE, &ring_dma);
+	ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma,
+					GFP_KERNEL);
    if (!ring_space)
    	goto err_out_unmap_tx;
    np->rx_ring = ring_space;
@@ -290,9 +292,11 @@ rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
    return 0;
err_out_unmap_rx:
-	pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
+	dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
+			  np->rx_ring_dma);
 err_out_unmap_tx:
-	pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
+	dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring,
+			  np->tx_ring_dma);
 err_out_iounmap:
 #ifdef MEM_MAPPING
    pci_iounmap(pdev, np->ioaddr);
@@ -446,8 +450,9 @@ static void free_list(struct net_device *dev)
    for (i = 0; i < RX_RING_SIZE; i++) {
    	skb = np->rx_skbuff[i];
    	if (skb) {
-			pci_unmap_single(np->pdev, desc_to_dma(&np->rx_ring[i]),
-					 skb->len, PCI_DMA_FROMDEVICE);
+			dma_unmap_single(&np->pdev->dev,
+					 desc_to_dma(&np->rx_ring[i]),
+					 skb->len, DMA_FROM_DEVICE);
    		dev_kfree_skb(skb);
    		np->rx_skbuff[i] = NULL;
    	}
@@ -457,8 +462,9 @@ static void free_list(struct net_device *dev)
    for (i = 0; i < TX_RING_SIZE; i++) {
    	skb = np->tx_skbuff[i];
    	if (skb) {
-			pci_unmap_single(np->pdev, desc_to_dma(&np->tx_ring[i]),
-					 skb->len, PCI_DMA_TODEVICE);
+			dma_unmap_single(&np->pdev->dev,
+					 desc_to_dma(&np->tx_ring[i]),
+					 skb->len, DMA_TO_DEVICE);
    		dev_kfree_skb(skb);
    		np->tx_skbuff[i] = NULL;
    	}
@@ -515,9 +521,8 @@ static int alloc_list(struct net_device *dev)
    					sizeof(struct netdev_desc));
    	/* Rubicon now supports 40 bits of addressing space. */
    	np->rx_ring[i].fraginfo =
-		    cpu_to_le64(pci_map_single(
-				  np->pdev, skb->data, np->rx_buf_sz,
-				  PCI_DMA_FROMDEVICE));
+		    cpu_to_le64(dma_map_single(&np->pdev->dev, skb->data,
+					       np->rx_buf_sz, DMA_FROM_DEVICE));
    	np->rx_ring[i].fraginfo |= cpu_to_le64((u64)np->rx_buf_sz << 48);
    }
@@ -683,9 +688,8 @@ rio_timer (struct timer_list *t)
    			}
    			np->rx_skbuff[entry] = skb;
    			np->rx_ring[entry].fraginfo =
-				    cpu_to_le64 (pci_map_single
-					 (np->pdev, skb->data, np->rx_buf_sz,
-					  PCI_DMA_FROMDEVICE));
+				    cpu_to_le64 (dma_map_single(&np->pdev->dev, skb->data,
+								np->rx_buf_sz, DMA_FROM_DEVICE));
    		}
    		np->rx_ring[entry].fraginfo |=
    		    cpu_to_le64((u64)np->rx_buf_sz << 48);
@@ -739,9 +743,8 @@ start_xmit (struct sk_buff *skb, struct net_device *dev)
    	    ((u64)np->vlan << 32) |
    	    ((u64)skb->priority << 45);
    }
-	txdesc->fraginfo = cpu_to_le64 (pci_map_single (np->pdev, skb->data,
-							skb->len,
-							PCI_DMA_TODEVICE));
+	txdesc->fraginfo = cpu_to_le64 (dma_map_single(&np->pdev->dev, skb->data,
+						       skb->len, DMA_TO_DEVICE));
    txdesc->fraginfo |= cpu_to_le64((u64)skb->len << 48);
/* DL2K bug: DMA fails to get next descriptor ptr in 10Mbps mode
@@ -838,9 +841,9 @@ rio_free_tx (struct net_device *dev, int irq)
    	if (!(np->tx_ring[entry].status & cpu_to_le64(TFDDone)))
    		break;
    	skb = np->tx_skbuff[entry];
-		pci_unmap_single (np->pdev,
-				  desc_to_dma(&np->tx_ring[entry]),
-				  skb->len, PCI_DMA_TODEVICE);
+		dma_unmap_single(&np->pdev->dev,
+				 desc_to_dma(&np->tx_ring[entry]), skb->len,
+				 DMA_TO_DEVICE);
    	if (irq)
    		dev_consume_skb_irq(skb);
    	else
@@ -965,25 +968,25 @@ receive_packet (struct net_device *dev)
/* Small skbuffs for short packets */
    		if (pkt_len > copy_thresh) {
-				pci_unmap_single (np->pdev,
-						  desc_to_dma(desc),
-						  np->rx_buf_sz,
-						  PCI_DMA_FROMDEVICE);
+				dma_unmap_single(&np->pdev->dev,
+						 desc_to_dma(desc),
+						 np->rx_buf_sz,
+						 DMA_FROM_DEVICE);
    			skb_put (skb = np->rx_skbuff[entry], pkt_len);
    			np->rx_skbuff[entry] = NULL;
    		} else if ((skb = netdev_alloc_skb_ip_align(dev, pkt_len))) {
-				pci_dma_sync_single_for_cpu(np->pdev,
-							    desc_to_dma(desc),
-							    np->rx_buf_sz,
-							    PCI_DMA_FROMDEVICE);
+				dma_sync_single_for_cpu(&np->pdev->dev,
+							desc_to_dma(desc),
+							np->rx_buf_sz,
+							DMA_FROM_DEVICE);
    			skb_copy_to_linear_data (skb,
    					  np->rx_skbuff[entry]->data,
    					  pkt_len);
    			skb_put (skb, pkt_len);
-				pci_dma_sync_single_for_device(np->pdev,
-							       desc_to_dma(desc),
-							       np->rx_buf_sz,
-							       PCI_DMA_FROMDEVICE);
+				dma_sync_single_for_device(&np->pdev->dev,
+							   desc_to_dma(desc),
+							   np->rx_buf_sz,
+							   DMA_FROM_DEVICE);
    		}
    		skb->protocol = eth_type_trans (skb, dev);
 #if 0
@@ -1016,9 +1019,8 @@ receive_packet (struct net_device *dev)
    		}
    		np->rx_skbuff[entry] = skb;
    		np->rx_ring[entry].fraginfo =
-			    cpu_to_le64 (pci_map_single
-					 (np->pdev, skb->data, np->rx_buf_sz,
-					  PCI_DMA_FROMDEVICE));
+			    cpu_to_le64(dma_map_single(&np->pdev->dev, skb->data,
+						       np->rx_buf_sz, DMA_FROM_DEVICE));
    	}
    	np->rx_ring[entry].fraginfo |=
    	    cpu_to_le64((u64)np->rx_buf_sz << 48);
@@ -1818,10 +1820,10 @@ rio_remove1 (struct pci_dev *pdev)
    	struct netdev_private *np = netdev_priv(dev);
unregister_netdev (dev);
-		pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring,
-				     np->rx_ring_dma);
-		pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring,
-				     np->tx_ring_dma);
+		dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
+				  np->rx_ring_dma);
+		dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring,
+				  np->tx_ring_dma);
 #ifdef MEM_MAPPING
    	pci_iounmap(pdev, np->ioaddr);
 #endif
-- 
2.51.0





    

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[PATCH 5.4 158/224] net: dl2k: switch from pci_ to dma_ API