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clean up dma api of ethernet driver

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SVN-Revision: 18150
This commit is contained in:
John Crispin 2009-10-25 16:58:00 +00:00
parent 9126be5b6e
commit 6f63d7baf2
1 changed files with 10 additions and 12 deletions
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22
target/linux/ramips/files/drivers/net/ramips.c
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@ -39,6 +39,8 @@
#include "ramips_esw.c"
#endif
#define phys_to_bus(a) (a & 0x1FFFFFFF)
static struct net_device * ramips_dev;
static void __iomem *ramips_fe_base = 0;
@ -57,15 +59,14 @@ ramips_fe_rr(unsigned reg)
static int
ramips_alloc_dma(struct net_device *dev)
{
#define phys_to_bus(a) (a & 0x1FFFFFFF)
struct raeth_priv *priv = netdev_priv(dev);
int i;
priv->skb_free_idx = 0;
/* setup tx ring */
priv->tx = pci_alloc_consistent(NULL,
NUM_TX_DESC * sizeof(struct ramips_tx_dma), &priv->phy_tx);
priv->tx = dma_alloc_coherent(NULL,
NUM_TX_DESC * sizeof(struct ramips_tx_dma), &priv->phy_tx, GFP_ATOMIC);
for(i = 0; i < NUM_TX_DESC; i++)
{
memset(&priv->tx[i], 0, sizeof(struct ramips_tx_dma));
@ -79,8 +80,8 @@ ramips_alloc_dma(struct net_device *dev)
ramips_fe_wr(RAMIPS_PST_DTX_IDX0, RAMIPS_PDMA_RST_CFG);
/* setup rx ring */
priv->rx = pci_alloc_consistent(NULL,
NUM_RX_DESC * sizeof(struct ramips_rx_dma), &priv->phy_rx);
priv->rx = dma_alloc_coherent(NULL,
NUM_RX_DESC * sizeof(struct ramips_rx_dma), &priv->phy_rx, GFP_ATOMIC);
memset(priv->rx, 0, sizeof(struct ramips_rx_dma) * NUM_RX_DESC);
for(i = 0; i < NUM_RX_DESC; i++)
{
@ -93,9 +94,6 @@ ramips_alloc_dma(struct net_device *dev)
priv->rx[i].rxd2 |= RX_DMA_LSO;
priv->rx_skb[i] = new_skb;
}
dma_cache_wback_inv((unsigned long)priv->rx,
NUM_RX_DESC * (sizeof(struct ramips_rx_dma)));
ramips_fe_wr(phys_to_bus(priv->phy_rx), RAMIPS_RX_BASE_PTR0);
ramips_fe_wr(NUM_RX_DESC, RAMIPS_RX_MAX_CNT0);
ramips_fe_wr((NUM_RX_DESC - 1), RAMIPS_RX_CALC_IDX0);
@ -110,7 +108,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
struct raeth_priv *priv = netdev_priv(dev);
unsigned long tx;
unsigned int tx_next;
unsigned int mapped_addr;
if(priv->plat->min_pkt_len)
{
if(skb->len < priv->plat->min_pkt_len)
@ -125,7 +123,9 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
}
}
dev->trans_start = jiffies;
dma_cache_wback_inv((unsigned long)skb->data, skb->len);
mapped_addr = (unsigned int)dma_map_single(NULL, skb->data, skb->len,
PCI_DMA_TODEVICE);
dma_sync_single_for_device(NULL, mapped_addr, skb->len, PCI_DMA_TODEVICE);
tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0);
if(tx == NUM_TX_DESC - 1)
tx_next = 0;
@ -190,8 +190,6 @@ ramips_eth_rx_hw(unsigned long ptr)
dma_map_single(NULL, new_skb->data, MAX_RX_LENGTH + 2,
PCI_DMA_FROMDEVICE);
priv->rx[rx].rxd2 &= ~RX_DMA_DONE;
dma_cache_wback_inv((unsigned long)&priv->rx[rx],
sizeof(struct ramips_rx_dma));
ramips_fe_wr(rx, RAMIPS_RX_CALC_IDX0);
}
if(max_rx == 0)