forked from luck/tmp_suning_uos_patched
sundance: Convert to DMA API
Convert to DMA API Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis Kirjanov
David S. Miller
parent
82fd5b5d1e
commit
0c8a745f06
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@ -96,6 +96,7 @@ static char *media[MAX_UNITS];
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <linux/spinlock.h>
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#include <linux/dma-mapping.h>
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#ifndef _COMPAT_WITH_OLD_KERNEL
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#include <linux/crc32.h>
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#include <linux/ethtool.h>
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@ -523,13 +524,15 @@ static int __devinit sundance_probe1 (struct pci_dev *pdev,
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tasklet_init(&np->rx_tasklet, rx_poll, (unsigned long)dev);
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tasklet_init(&np->tx_tasklet, tx_poll, (unsigned long)dev);
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ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
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ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE,
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&ring_dma, GFP_KERNEL);
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if (!ring_space)
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goto err_out_cleardev;
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np->tx_ring = (struct netdev_desc *)ring_space;
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np->tx_ring_dma = ring_dma;
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ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
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ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE,
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&ring_dma, GFP_KERNEL);
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if (!ring_space)
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goto err_out_unmap_tx;
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np->rx_ring = (struct netdev_desc *)ring_space;
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@ -663,9 +666,11 @@ static int __devinit sundance_probe1 (struct pci_dev *pdev,
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err_out_unregister:
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unregister_netdev(dev);
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err_out_unmap_rx:
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pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
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dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
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np->rx_ring, np->rx_ring_dma);
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err_out_unmap_tx:
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pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
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dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
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np->tx_ring, np->tx_ring_dma);
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err_out_cleardev:
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pci_set_drvdata(pdev, NULL);
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pci_iounmap(pdev, ioaddr);
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@ -1011,8 +1016,8 @@ static void init_ring(struct net_device *dev)
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skb->dev = dev; /* Mark as being used by this device. */
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skb_reserve(skb, 2); /* 16 byte align the IP header. */
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np->rx_ring[i].frag[0].addr = cpu_to_le32(
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pci_map_single(np->pci_dev, skb->data, np->rx_buf_sz,
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PCI_DMA_FROMDEVICE));
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dma_map_single(&np->pci_dev->dev, skb->data,
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np->rx_buf_sz, DMA_FROM_DEVICE));
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np->rx_ring[i].frag[0].length = cpu_to_le32(np->rx_buf_sz | LastFrag);
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}
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np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
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@ -1063,9 +1068,8 @@ start_tx (struct sk_buff *skb, struct net_device *dev)
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txdesc->next_desc = 0;
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txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign);
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txdesc->frag[0].addr = cpu_to_le32 (pci_map_single (np->pci_dev, skb->data,
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skb->len,
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PCI_DMA_TODEVICE));
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txdesc->frag[0].addr = cpu_to_le32(dma_map_single(&np->pci_dev->dev,
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skb->data, skb->len, DMA_TO_DEVICE));
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txdesc->frag[0].length = cpu_to_le32 (skb->len | LastFrag);
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/* Increment cur_tx before tasklet_schedule() */
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@ -1109,9 +1113,9 @@ reset_tx (struct net_device *dev)
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skb = np->tx_skbuff[i];
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if (skb) {
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(np->tx_ring[i].frag[0].addr),
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skb->len, PCI_DMA_TODEVICE);
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skb->len, DMA_TO_DEVICE);
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if (irq)
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dev_kfree_skb_irq (skb);
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else
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@ -1233,9 +1237,9 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
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break;
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skb = np->tx_skbuff[entry];
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/* Free the original skb. */
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(np->tx_ring[entry].frag[0].addr),
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skb->len, PCI_DMA_TODEVICE);
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skb->len, DMA_TO_DEVICE);
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dev_kfree_skb_irq (np->tx_skbuff[entry]);
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np->tx_skbuff[entry] = NULL;
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np->tx_ring[entry].frag[0].addr = 0;
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@ -1252,9 +1256,9 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
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break;
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skb = np->tx_skbuff[entry];
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/* Free the original skb. */
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(np->tx_ring[entry].frag[0].addr),
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skb->len, PCI_DMA_TODEVICE);
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skb->len, DMA_TO_DEVICE);
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dev_kfree_skb_irq (np->tx_skbuff[entry]);
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np->tx_skbuff[entry] = NULL;
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np->tx_ring[entry].frag[0].addr = 0;
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@ -1334,22 +1338,18 @@ static void rx_poll(unsigned long data)
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if (pkt_len < rx_copybreak &&
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(skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
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skb_reserve(skb, 2); /* 16 byte align the IP header */
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pci_dma_sync_single_for_cpu(np->pci_dev,
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le32_to_cpu(desc->frag[0].addr),
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np->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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dma_sync_single_for_cpu(&np->pci_dev->dev,
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le32_to_cpu(desc->frag[0].addr),
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np->rx_buf_sz, DMA_FROM_DEVICE);
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skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len);
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pci_dma_sync_single_for_device(np->pci_dev,
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le32_to_cpu(desc->frag[0].addr),
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np->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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dma_sync_single_for_device(&np->pci_dev->dev,
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le32_to_cpu(desc->frag[0].addr),
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np->rx_buf_sz, DMA_FROM_DEVICE);
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skb_put(skb, pkt_len);
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} else {
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(desc->frag[0].addr),
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np->rx_buf_sz,
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PCI_DMA_FROMDEVICE);
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np->rx_buf_sz, DMA_FROM_DEVICE);
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skb_put(skb = np->rx_skbuff[entry], pkt_len);
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np->rx_skbuff[entry] = NULL;
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}
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@ -1396,8 +1396,8 @@ static void refill_rx (struct net_device *dev)
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skb->dev = dev; /* Mark as being used by this device. */
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skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
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np->rx_ring[entry].frag[0].addr = cpu_to_le32(
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pci_map_single(np->pci_dev, skb->data,
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np->rx_buf_sz, PCI_DMA_FROMDEVICE));
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dma_map_single(&np->pci_dev->dev, skb->data,
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np->rx_buf_sz, DMA_FROM_DEVICE));
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}
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/* Perhaps we need not reset this field. */
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np->rx_ring[entry].frag[0].length =
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@ -1715,9 +1715,9 @@ static int netdev_close(struct net_device *dev)
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np->rx_ring[i].status = 0;
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skb = np->rx_skbuff[i];
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if (skb) {
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(np->rx_ring[i].frag[0].addr),
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np->rx_buf_sz, PCI_DMA_FROMDEVICE);
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np->rx_buf_sz, DMA_FROM_DEVICE);
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dev_kfree_skb(skb);
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np->rx_skbuff[i] = NULL;
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}
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@ -1727,9 +1727,9 @@ static int netdev_close(struct net_device *dev)
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np->tx_ring[i].next_desc = 0;
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skb = np->tx_skbuff[i];
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if (skb) {
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pci_unmap_single(np->pci_dev,
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dma_unmap_single(&np->pci_dev->dev,
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le32_to_cpu(np->tx_ring[i].frag[0].addr),
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skb->len, PCI_DMA_TODEVICE);
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skb->len, DMA_TO_DEVICE);
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dev_kfree_skb(skb);
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np->tx_skbuff[i] = NULL;
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}
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@ -1743,17 +1743,16 @@ static void __devexit sundance_remove1 (struct pci_dev *pdev)
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struct net_device *dev = pci_get_drvdata(pdev);
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if (dev) {
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struct netdev_private *np = netdev_priv(dev);
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unregister_netdev(dev);
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pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
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np->rx_ring_dma);
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pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
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np->tx_ring_dma);
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pci_iounmap(pdev, np->base);
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pci_release_regions(pdev);
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free_netdev(dev);
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pci_set_drvdata(pdev, NULL);
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struct netdev_private *np = netdev_priv(dev);
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unregister_netdev(dev);
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dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
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np->rx_ring, np->rx_ring_dma);
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dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
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np->tx_ring, np->tx_ring_dma);
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pci_iounmap(pdev, np->base);
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pci_release_regions(pdev);
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free_netdev(dev);
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pci_set_drvdata(pdev, NULL);
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}
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}
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