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Date: Mon, 27 Jan 2014 15:51:41 +0400
From: Alexey Charkov <alchark@...il.com>
To: netdev@...r.kernel.org, linux@...sktech.co.nz,
devicetree@...r.kernel.org, rl@...lgate.ch,
linux-kernel@...r.kernel.org
Cc: Alexey Charkov <alchark@...il.com>
Subject: [PATCH 1/3] net: via-rhine: switch to generic DMA functions
Remove legacy PCI DMA wrappers and instead use generic DMA functions
directly in preparation for OF bus binding
Signed-off-by: Alexey Charkov <alchark@...il.com>
Signed-off-by: Roger Luethi <rl@...lgate.ch>
---
drivers/net/ethernet/via/via-rhine.c | 56 +++++++++++++++++++-----------------
1 file changed, 29 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index ef312bc..fee8732 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -919,10 +919,10 @@ static int rhine_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out;
/* this should always be supported */
- rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (rc) {
dev_err(&pdev->dev,
- "32-bit PCI DMA addresses not supported by the card!?\n");
+ "32-bit DMA addresses not supported by the card!?\n");
goto err_out;
}
@@ -1094,20 +1094,22 @@ static int alloc_ring(struct net_device* dev)
void *ring;
dma_addr_t ring_dma;
- ring = pci_alloc_consistent(rp->pdev,
+ ring = dma_alloc_coherent(&rp->pdev->dev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
- &ring_dma);
+ &ring_dma,
+ GFP_ATOMIC);
if (!ring) {
netdev_err(dev, "Could not allocate DMA memory\n");
return -ENOMEM;
}
if (rp->quirks & rqRhineI) {
- rp->tx_bufs = pci_alloc_consistent(rp->pdev,
+ rp->tx_bufs = dma_alloc_coherent(&rp->pdev->dev,
PKT_BUF_SZ * TX_RING_SIZE,
- &rp->tx_bufs_dma);
+ &rp->tx_bufs_dma,
+ GFP_ATOMIC);
if (rp->tx_bufs == NULL) {
- pci_free_consistent(rp->pdev,
+ dma_free_coherent(&rp->pdev->dev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
ring, ring_dma);
@@ -1127,14 +1129,14 @@ static void free_ring(struct net_device* dev)
{
struct rhine_private *rp = netdev_priv(dev);
- pci_free_consistent(rp->pdev,
+ dma_free_coherent(&rp->pdev->dev,
RX_RING_SIZE * sizeof(struct rx_desc) +
TX_RING_SIZE * sizeof(struct tx_desc),
rp->rx_ring, rp->rx_ring_dma);
rp->tx_ring = NULL;
if (rp->tx_bufs)
- pci_free_consistent(rp->pdev, PKT_BUF_SZ * TX_RING_SIZE,
+ dma_free_coherent(&rp->pdev->dev, PKT_BUF_SZ * TX_RING_SIZE,
rp->tx_bufs, rp->tx_bufs_dma);
rp->tx_bufs = NULL;
@@ -1172,8 +1174,8 @@ static void alloc_rbufs(struct net_device *dev)
break;
rp->rx_skbuff_dma[i] =
- pci_map_single(rp->pdev, skb->data, rp->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
+ dma_map_single(&rp->pdev->dev, skb->data, rp->rx_buf_sz,
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[i])) {
rp->rx_skbuff_dma[i] = 0;
dev_kfree_skb(skb);
@@ -1195,9 +1197,9 @@ static void free_rbufs(struct net_device* dev)
rp->rx_ring[i].rx_status = 0;
rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
if (rp->rx_skbuff[i]) {
- pci_unmap_single(rp->pdev,
+ dma_unmap_single(&rp->pdev->dev,
rp->rx_skbuff_dma[i],
- rp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ rp->rx_buf_sz, DMA_FROM_DEVICE);
dev_kfree_skb(rp->rx_skbuff[i]);
}
rp->rx_skbuff[i] = NULL;
@@ -1236,10 +1238,10 @@ static void free_tbufs(struct net_device* dev)
rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
if (rp->tx_skbuff[i]) {
if (rp->tx_skbuff_dma[i]) {
- pci_unmap_single(rp->pdev,
+ dma_unmap_single(&rp->pdev->dev,
rp->tx_skbuff_dma[i],
rp->tx_skbuff[i]->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
}
dev_kfree_skb(rp->tx_skbuff[i]);
}
@@ -1693,8 +1695,8 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
rp->tx_bufs));
} else {
rp->tx_skbuff_dma[entry] =
- pci_map_single(rp->pdev, skb->data, skb->len,
- PCI_DMA_TODEVICE);
+ dma_map_single(&rp->pdev->dev, skb->data, skb->len,
+ DMA_TO_DEVICE);
if (dma_mapping_error(&rp->pdev->dev, rp->tx_skbuff_dma[entry])) {
dev_kfree_skb(skb);
rp->tx_skbuff_dma[entry] = 0;
@@ -1829,10 +1831,10 @@ static void rhine_tx(struct net_device *dev)
}
/* Free the original skb. */
if (rp->tx_skbuff_dma[entry]) {
- pci_unmap_single(rp->pdev,
+ dma_unmap_single(&rp->pdev->dev,
rp->tx_skbuff_dma[entry],
rp->tx_skbuff[entry]->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
}
dev_kfree_skb(rp->tx_skbuff[entry]);
rp->tx_skbuff[entry] = NULL;
@@ -1922,19 +1924,19 @@ static int rhine_rx(struct net_device *dev, int limit)
if (pkt_len < rx_copybreak)
skb = netdev_alloc_skb_ip_align(dev, pkt_len);
if (skb) {
- pci_dma_sync_single_for_cpu(rp->pdev,
+ dma_sync_single_for_cpu(&rp->pdev->dev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
skb_copy_to_linear_data(skb,
rp->rx_skbuff[entry]->data,
pkt_len);
skb_put(skb, pkt_len);
- pci_dma_sync_single_for_device(rp->pdev,
+ dma_sync_single_for_device(&rp->pdev->dev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
} else {
skb = rp->rx_skbuff[entry];
if (skb == NULL) {
@@ -1943,10 +1945,10 @@ static int rhine_rx(struct net_device *dev, int limit)
}
rp->rx_skbuff[entry] = NULL;
skb_put(skb, pkt_len);
- pci_unmap_single(rp->pdev,
+ dma_unmap_single(&rp->pdev->dev,
rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
}
if (unlikely(desc_length & DescTag))
@@ -1977,9 +1979,9 @@ static int rhine_rx(struct net_device *dev, int limit)
if (skb == NULL)
break; /* Better luck next round. */
rp->rx_skbuff_dma[entry] =
- pci_map_single(rp->pdev, skb->data,
+ dma_map_single(&rp->pdev->dev, skb->data,
rp->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (dma_mapping_error(&rp->pdev->dev, rp->rx_skbuff_dma[entry])) {
dev_kfree_skb(skb);
rp->rx_skbuff_dma[entry] = 0;
--
1.8.5.1
--
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