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smsc9420: 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 and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.

When memory is allocated in 'smsc9420_probe()', GFP_KERNEL can be used
because it is a probe function and no lock is acquired.

While at it, rewrite the size passed to 'dma_alloc_coherent()' the same way
as the one passed to 'dma_free_coherent()'. This form is less verbose:
   sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE +
   sizeof(struct smsc9420_dma_desc) * TX_RING_SIZE,
vs
   sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE)

@@
@@
-    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>
This commit is contained in:
Christophe JAILLET 2020-09-03 22:10:55 +02:00 committed by David S. Miller
parent 6369280389
commit 3ab1270bfa
1 changed files with 28 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/net/ethernet/smsc/smsc9420.c
View File

@ -497,8 +497,9 @@ static void smsc9420_free_tx_ring(struct smsc9420_pdata *pd)
if (skb) {
BUG_ON(!pd->tx_buffers[i].mapping);
pci_unmap_single(pd->pdev, pd->tx_buffers[i].mapping,
skb->len, PCI_DMA_TODEVICE);
dma_unmap_single(&pd->pdev->dev,
pd->tx_buffers[i].mapping, skb->len,
DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
}
@ -530,8 +531,9 @@ static void smsc9420_free_rx_ring(struct smsc9420_pdata *pd)
dev_kfree_skb_any(pd->rx_buffers[i].skb);
if (pd->rx_buffers[i].mapping)
pci_unmap_single(pd->pdev, pd->rx_buffers[i].mapping,
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_unmap_single(&pd->pdev->dev,
pd->rx_buffers[i].mapping,
PKT_BUF_SZ, DMA_FROM_DEVICE);
pd->rx_ring[i].status = 0;
pd->rx_ring[i].length = 0;
@ -749,8 +751,8 @@ static void smsc9420_rx_handoff(struct smsc9420_pdata *pd, const int index,
dev->stats.rx_packets++;
dev->stats.rx_bytes += packet_length;
pci_unmap_single(pd->pdev, pd->rx_buffers[index].mapping,
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
dma_unmap_single(&pd->pdev->dev, pd->rx_buffers[index].mapping,
PKT_BUF_SZ, DMA_FROM_DEVICE);
pd->rx_buffers[index].mapping = 0;
skb = pd->rx_buffers[index].skb;
@ -782,9 +784,9 @@ static int smsc9420_alloc_rx_buffer(struct smsc9420_pdata *pd, int index)
if (unlikely(!skb))
return -ENOMEM;
mapping = pci_map_single(pd->pdev, skb_tail_pointer(skb),
PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(pd->pdev, mapping)) {
mapping = dma_map_single(&pd->pdev->dev, skb_tail_pointer(skb),
PKT_BUF_SZ, DMA_FROM_DEVICE);
if (dma_mapping_error(&pd->pdev->dev, mapping)) {
dev_kfree_skb_any(skb);
netif_warn(pd, rx_err, pd->dev, "pci_map_single failed!\n");
return -ENOMEM;
@ -901,8 +903,10 @@ static void smsc9420_complete_tx(struct net_device *dev)
BUG_ON(!pd->tx_buffers[index].skb);
BUG_ON(!pd->tx_buffers[index].mapping);
pci_unmap_single(pd->pdev, pd->tx_buffers[index].mapping,
pd->tx_buffers[index].skb->len, PCI_DMA_TODEVICE);
dma_unmap_single(&pd->pdev->dev,
pd->tx_buffers[index].mapping,
pd->tx_buffers[index].skb->len,
DMA_TO_DEVICE);
pd->tx_buffers[index].mapping = 0;
dev_kfree_skb_any(pd->tx_buffers[index].skb);
@ -932,9 +936,9 @@ static netdev_tx_t smsc9420_hard_start_xmit(struct sk_buff *skb,
BUG_ON(pd->tx_buffers[index].skb);
BUG_ON(pd->tx_buffers[index].mapping);
mapping = pci_map_single(pd->pdev, skb->data,
skb->len, PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pd->pdev, mapping)) {
mapping = dma_map_single(&pd->pdev->dev, skb->data, skb->len,
DMA_TO_DEVICE);
if (dma_mapping_error(&pd->pdev->dev, mapping)) {
netif_warn(pd, tx_err, pd->dev,
"pci_map_single failed, dropping packet\n");
return NETDEV_TX_BUSY;
@ -1522,7 +1526,7 @@ smsc9420_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto out_free_netdev_2;
}
if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
netdev_err(dev, "No usable DMA configuration, aborting\n");
goto out_free_regions_3;
}
@ -1540,10 +1544,9 @@ smsc9420_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pd = netdev_priv(dev);
/* pci descriptors are created in the PCI consistent area */
pd->rx_ring = pci_alloc_consistent(pdev,
sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE +
sizeof(struct smsc9420_dma_desc) * TX_RING_SIZE,
&pd->rx_dma_addr);
pd->rx_ring = dma_alloc_coherent(&pdev->dev,
sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE),
&pd->rx_dma_addr, GFP_KERNEL);
if (!pd->rx_ring)
goto out_free_io_4;
@ -1599,8 +1602,9 @@ smsc9420_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
out_free_dmadesc_5:
pci_free_consistent(pdev, sizeof(struct smsc9420_dma_desc) *
(RX_RING_SIZE + TX_RING_SIZE), pd->rx_ring, pd->rx_dma_addr);
dma_free_coherent(&pdev->dev,
sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE),
pd->rx_ring, pd->rx_dma_addr);
out_free_io_4:
iounmap(virt_addr - LAN9420_CPSR_ENDIAN_OFFSET);
out_free_regions_3:
@ -1632,8 +1636,9 @@ static void smsc9420_remove(struct pci_dev *pdev)
BUG_ON(!pd->tx_ring);
BUG_ON(!pd->rx_ring);
pci_free_consistent(pdev, sizeof(struct smsc9420_dma_desc) *
(RX_RING_SIZE + TX_RING_SIZE), pd->rx_ring, pd->rx_dma_addr);
dma_free_coherent(&pdev->dev,
sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE),
pd->rx_ring, pd->rx_dma_addr);
iounmap(pd->ioaddr - LAN9420_CPSR_ENDIAN_OFFSET);
pci_release_regions(pdev);