more cpmac cleanups (#2452): * don't use net_device::mem* * use net_device::stats * use per-device rx ring size configurable through ethtool * use more ethernet generics (get_stats, set_mac_address, change_mtu)
SVN-Revision: 9098
This commit is contained in:
Eugene Konev
parent
af54509be8
commit
e10dfa5129
@ -42,22 +42,25 @@ MODULE_AUTHOR("Eugene Konev");
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MODULE_DESCRIPTION("TI AR7 ethernet driver (CPMAC)");
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MODULE_LICENSE("GPL");
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static int rx_ring_size = 64;
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static int disable_napi;
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static int debug_level = 8;
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static int dumb_switch;
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module_param(rx_ring_size, int, 0644);
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module_param(disable_napi, int, 0644);
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/* Next 2 are only used in cpmac_probe, so it's pointless to change them */
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module_param(debug_level, int, 0444);
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module_param(dumb_switch, int, 0444);
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MODULE_PARM_DESC(rx_ring_size, "Size of rx ring (in skbs)");
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MODULE_PARM_DESC(disable_napi, "Disable NAPI polling");
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MODULE_PARM_DESC(debug_level, "Number of NETIF_MSG bits to enable");
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MODULE_PARM_DESC(dumb_switch, "Assume switch is not connected to MDIO bus");
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/* stolen from net/ieee80211.h */
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#ifndef MAC_FMT
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#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
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#define MAC_ARG(x) ((u8*)(x))[0], ((u8*)(x))[1], ((u8*)(x))[2], \
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((u8*)(x))[3], ((u8*)(x))[4], ((u8*)(x))[5]
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#endif
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/* frame size + 802.1q tag */
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#define CPMAC_SKB_SIZE (ETH_FRAME_LEN + 4)
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#define CPMAC_TX_RING_SIZE 8
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@ -195,21 +198,19 @@ struct cpmac_desc {
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};
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struct cpmac_priv {
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struct net_device_stats stats;
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spinlock_t lock;
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struct cpmac_desc *rx_head;
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int tx_head, tx_tail;
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int ring_size;
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struct cpmac_desc *desc_ring;
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dma_addr_t dma_ring;
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void __iomem *regs;
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struct mii_bus *mii_bus;
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struct phy_device *phy;
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char phy_name[BUS_ID_SIZE];
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struct plat_cpmac_data *config;
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int oldlink, oldspeed, oldduplex;
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u32 msg_enable;
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struct net_device *dev;
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struct work_struct alloc_work;
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struct platform_device *pdev;
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};
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static irqreturn_t cpmac_irq(int, void *);
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@ -313,18 +314,6 @@ static int cpmac_config(struct net_device *dev, struct ifmap *map)
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return 0;
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}
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static int cpmac_set_mac_address(struct net_device *dev, void *addr)
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{
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struct sockaddr *sa = addr;
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if (dev->flags & IFF_UP)
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return -EBUSY;
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memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
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return 0;
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}
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static void cpmac_set_multicast_list(struct net_device *dev)
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{
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struct dev_mc_list *iter;
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@ -397,8 +386,8 @@ static struct sk_buff *cpmac_rx_one(struct net_device *dev,
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skb_put(desc->skb, desc->datalen);
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desc->skb->protocol = eth_type_trans(desc->skb, dev);
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desc->skb->ip_summed = CHECKSUM_NONE;
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priv->stats.rx_packets++;
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priv->stats.rx_bytes += desc->datalen;
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dev->stats.rx_packets++;
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dev->stats.rx_bytes += desc->datalen;
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result = desc->skb;
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dma_unmap_single(&dev->dev, desc->data_mapping, CPMAC_SKB_SIZE,
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DMA_FROM_DEVICE);
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@ -415,7 +404,7 @@ static struct sk_buff *cpmac_rx_one(struct net_device *dev,
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if (netif_msg_rx_err(priv) && net_ratelimit())
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printk(KERN_WARNING
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"%s: low on skbs, dropping packet\n", dev->name);
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priv->stats.rx_dropped++;
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dev->stats.rx_dropped++;
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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@ -505,7 +494,7 @@ static int cpmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
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printk(KERN_WARNING"%s: tx: padding failed, dropping\n",
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dev->name);
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spin_lock_irqsave(&priv->lock, flags);
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priv->stats.tx_dropped++;
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dev->stats.tx_dropped++;
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spin_unlock_irqrestore(&priv->lock, flags);
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return -ENOMEM;
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}
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@ -522,7 +511,7 @@ static int cpmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
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if (netif_msg_tx_err(priv) && net_ratelimit())
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printk(KERN_WARNING "%s: tx dma ring full, dropping\n",
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dev->name);
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priv->stats.tx_dropped++;
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dev->stats.tx_dropped++;
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spin_unlock_irqrestore(&priv->lock, flags);
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dev_kfree_skb_any(skb);
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return -ENOMEM;
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@ -558,8 +547,8 @@ static void cpmac_end_xmit(struct net_device *dev, int channel)
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desc = &priv->desc_ring[channel];
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cpmac_write(priv->regs, CPMAC_TX_ACK(channel), (u32)desc->mapping);
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if (likely(desc->skb)) {
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priv->stats.tx_packets++;
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priv->stats.tx_bytes += desc->skb->len;
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dev->stats.tx_packets++;
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dev->stats.tx_bytes += desc->skb->len;
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dma_unmap_single(&dev->dev, desc->data_mapping, desc->skb->len,
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DMA_TO_DEVICE);
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@ -581,8 +570,9 @@ static void cpmac_reset(struct net_device *dev)
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{
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int i;
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struct cpmac_priv *priv = netdev_priv(dev);
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struct plat_cpmac_data *pdata = priv->pdev->dev.platform_data;
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ar7_device_reset(priv->config->reset_bit);
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ar7_device_reset(pdata->reset_bit);
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cpmac_write(priv->regs, CPMAC_RX_CONTROL,
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cpmac_read(priv->regs, CPMAC_RX_CONTROL) & ~1);
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cpmac_write(priv->regs, CPMAC_TX_CONTROL,
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@ -606,7 +596,7 @@ static inline void cpmac_free_rx_ring(struct net_device *dev)
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desc = priv->rx_head;
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for (i = 0; i < rx_ring_size; i++) {
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for (i = 0; i < priv->ring_size; i++) {
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desc->buflen = CPMAC_SKB_SIZE;
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if ((desc->dataflags & CPMAC_OWN) == 0) {
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if (netif_msg_rx_err(priv) && net_ratelimit())
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@ -615,7 +605,7 @@ static inline void cpmac_free_rx_ring(struct net_device *dev)
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if (unlikely(netif_msg_hw(priv)))
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cpmac_dump_desc(dev, desc);
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desc->dataflags = CPMAC_OWN;
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priv->stats.rx_dropped++;
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dev->stats.rx_dropped++;
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}
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desc = desc->next;
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}
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@ -674,7 +664,7 @@ static void cpmac_tx_timeout(struct net_device *dev)
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struct cpmac_priv *priv = netdev_priv(dev);
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struct cpmac_desc *desc;
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priv->stats.tx_errors++;
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dev->stats.tx_errors++;
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desc = &priv->desc_ring[priv->tx_head++];
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priv->tx_head %= 8;
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if (netif_msg_tx_err(priv) && net_ratelimit())
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@ -721,6 +711,31 @@ static int cpmac_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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return -EINVAL;
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}
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static void cpmac_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
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{
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struct cpmac_priv *priv = netdev_priv(dev);
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ring->rx_max_pending = 1024;
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ring->rx_mini_max_pending = 1;
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ring->rx_jumbo_max_pending = 1;
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ring->tx_max_pending = 1;
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ring->rx_pending = priv->ring_size;
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ring->rx_mini_pending = 1;
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ring->rx_jumbo_pending = 1;
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ring->tx_pending = 1;
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}
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static int cpmac_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
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{
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struct cpmac_priv *priv = netdev_priv(dev);
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if (dev->flags && IFF_UP)
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return -EBUSY;
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priv->ring_size = ring->rx_pending;
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return 0;
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}
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static void cpmac_get_drvinfo(struct net_device *dev,
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struct ethtool_drvinfo *info)
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{
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@ -736,34 +751,10 @@ static const struct ethtool_ops cpmac_ethtool_ops = {
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.set_settings = cpmac_set_settings,
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.get_drvinfo = cpmac_get_drvinfo,
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.get_link = ethtool_op_get_link,
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.get_ringparam = cpmac_get_ringparam,
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.set_ringparam = cpmac_set_ringparam,
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};
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static struct net_device_stats *cpmac_stats(struct net_device *dev)
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{
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struct cpmac_priv *priv = netdev_priv(dev);
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if (netif_device_present(dev))
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return &priv->stats;
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return NULL;
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}
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static int cpmac_change_mtu(struct net_device *dev, int mtu)
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{
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unsigned long flags;
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struct cpmac_priv *priv = netdev_priv(dev);
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spinlock_t *lock = &priv->lock;
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if ((mtu < 68) || (mtu > 1500))
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return -EINVAL;
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spin_lock_irqsave(lock, flags);
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dev->mtu = mtu;
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spin_unlock_irqrestore(lock, flags);
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return 0;
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}
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static void cpmac_adjust_link(struct net_device *dev)
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{
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struct cpmac_priv *priv = netdev_priv(dev);
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@ -846,6 +837,7 @@ static int cpmac_open(struct net_device *dev)
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{
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int i, size, res;
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struct cpmac_priv *priv = netdev_priv(dev);
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struct resource *mem;
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struct cpmac_desc *desc;
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struct sk_buff *skb;
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@ -858,8 +850,8 @@ static int cpmac_open(struct net_device *dev)
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return PTR_ERR(priv->phy);
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}
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if (!request_mem_region(dev->mem_start, dev->mem_end -
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dev->mem_start, dev->name)) {
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mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
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if (!request_mem_region(mem->start, mem->end - mem->start, dev->name)) {
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if (netif_msg_drv(priv))
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printk(KERN_ERR "%s: failed to request registers\n",
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dev->name);
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@ -867,8 +859,7 @@ static int cpmac_open(struct net_device *dev)
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goto fail_reserve;
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}
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priv->regs = ioremap(dev->mem_start, dev->mem_end -
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dev->mem_start);
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priv->regs = ioremap(mem->start, mem->end - mem->start);
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if (!priv->regs) {
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if (netif_msg_drv(priv))
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printk(KERN_ERR "%s: failed to remap registers\n",
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@ -878,7 +869,7 @@ static int cpmac_open(struct net_device *dev)
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}
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priv->rx_head = NULL;
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size = rx_ring_size + CPMAC_TX_RING_SIZE;
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size = priv->ring_size + CPMAC_TX_RING_SIZE;
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priv->desc_ring = dma_alloc_coherent(&dev->dev,
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sizeof(struct cpmac_desc) * size,
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&priv->dma_ring,
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@ -892,7 +883,7 @@ static int cpmac_open(struct net_device *dev)
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for (i = 0; i < size; i++)
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priv->desc_ring[i].mapping = priv->dma_ring + sizeof(*desc) * i;
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for (i = 0, desc = &priv->rx_head[i]; i < rx_ring_size; i++, desc++) {
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for (i = 0, desc = &priv->rx_head[i]; i < priv->ring_size; i++, desc++) {
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skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
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if (unlikely(!skb)) {
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res = -ENOMEM;
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@ -906,7 +897,7 @@ static int cpmac_open(struct net_device *dev)
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desc->hw_data = (u32)desc->data_mapping;
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desc->buflen = CPMAC_SKB_SIZE;
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desc->dataflags = CPMAC_OWN;
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desc->next = &priv->rx_head[(i + 1) % rx_ring_size];
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desc->next = &priv->rx_head[(i + 1) % priv->ring_size];
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desc->hw_next = (u32)desc->next->mapping;
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}
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@ -926,7 +917,7 @@ static int cpmac_open(struct net_device *dev)
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fail_irq:
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fail_desc:
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for (i = 0; i < rx_ring_size; i++) {
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for (i = 0; i < priv->ring_size; i++) {
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if (priv->rx_head[i].skb) {
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kfree_skb(priv->rx_head[i].skb);
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dma_unmap_single(&dev->dev,
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@ -940,8 +931,7 @@ fail_alloc:
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iounmap(priv->regs);
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fail_remap:
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release_mem_region(dev->mem_start, dev->mem_end -
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dev->mem_start);
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release_mem_region(mem->start, mem->end - mem->start);
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fail_reserve:
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phy_disconnect(priv->phy);
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@ -953,6 +943,7 @@ static int cpmac_stop(struct net_device *dev)
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{
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int i;
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struct cpmac_priv *priv = netdev_priv(dev);
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struct resource *mem;
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netif_stop_queue(dev);
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@ -968,10 +959,11 @@ static int cpmac_stop(struct net_device *dev)
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cpmac_write(priv->regs, CPMAC_MBP, 0);
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free_irq(dev->irq, dev);
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release_mem_region(dev->mem_start, dev->mem_end -
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dev->mem_start);
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iounmap(priv->regs);
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mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
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release_mem_region(mem->start, mem->end - mem->start);
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priv->rx_head = &priv->desc_ring[CPMAC_TX_RING_SIZE];
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for (i = 0; i < rx_ring_size; i++) {
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for (i = 0; i < priv->ring_size; i++) {
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if (priv->rx_head[i].skb) {
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kfree_skb(priv->rx_head[i].skb);
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dma_unmap_single(&dev->dev,
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@ -982,7 +974,7 @@ static int cpmac_stop(struct net_device *dev)
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}
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dma_free_coherent(&dev->dev, sizeof(struct cpmac_desc) *
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(CPMAC_TX_RING_SIZE + rx_ring_size),
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(CPMAC_TX_RING_SIZE + priv->ring_size),
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priv->desc_ring, priv->dma_ring);
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return 0;
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}
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@ -991,8 +983,8 @@ static int external_switch;
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static int __devinit cpmac_probe(struct platform_device *pdev)
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{
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int i, rc, phy_id;
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struct resource *res;
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int rc, phy_id;
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struct resource *mem;
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struct cpmac_priv *priv;
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struct net_device *dev;
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struct plat_cpmac_data *pdata;
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@ -1026,14 +1018,13 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, dev);
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priv = netdev_priv(dev);
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
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if (!res) {
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priv->pdev = pdev;
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mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
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if (!mem) {
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rc = -ENODEV;
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goto fail;
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}
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dev->mem_start = res->start;
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dev->mem_end = res->end;
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dev->irq = platform_get_irq_byname(pdev, "irq");
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dev->open = cpmac_open;
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@ -1041,22 +1032,18 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
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dev->set_config = cpmac_config;
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dev->hard_start_xmit = cpmac_start_xmit;
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dev->do_ioctl = cpmac_ioctl;
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dev->get_stats = cpmac_stats;
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dev->change_mtu = cpmac_change_mtu;
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dev->set_mac_address = cpmac_set_mac_address;
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dev->set_multicast_list = cpmac_set_multicast_list;
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dev->tx_timeout = cpmac_tx_timeout;
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dev->ethtool_ops = &cpmac_ethtool_ops;
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if (!disable_napi) {
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dev->poll = cpmac_poll;
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dev->weight = min(rx_ring_size, 64);
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dev->weight = 64;
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}
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spin_lock_init(&priv->lock);
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priv->msg_enable = netif_msg_init(debug_level, 0xff);
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priv->config = pdata;
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priv->dev = dev;
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memcpy(dev->dev_addr, priv->config->dev_addr, sizeof(dev->dev_addr));
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priv->ring_size = 64;
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memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
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if (phy_id == 31) {
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snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT,
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cpmac_mii.id, phy_id);
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@ -1073,11 +1060,9 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
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if (netif_msg_probe(priv)) {
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printk(KERN_INFO
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"cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: ",
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dev->name, (u32 *)dev->mem_start, dev->irq,
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priv->phy_name);
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for (i = 0; i < 6; i++)
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printk("%02x%s", dev->dev_addr[i], i < 5 ? ":" : ")\n");
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"cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: "
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MAC_FMT ")\n", dev->name, (void *)mem->start, dev->irq,
|
||||
priv->phy_name, MAC_ARG(dev->dev_addr));
|
||||
}
|
||||
return 0;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user