X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=target%2Flinux%2Far71xx%2Ffiles%2Fdrivers%2Fnet%2Fag71xx%2Fag71xx_main.c;h=8921639ab89eec4e0ee3e36e08f992c2c75ead58;hb=03b0188081ed8721825de822daf9c6a26bc253cf;hp=16cb4ddd3910587084ac3949691be9cb261df873;hpb=e36d68b178e4b43ddf0959472b20de69c0c20ab8;p=openwrt.git diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c index 16cb4ddd39..8921639ab8 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c @@ -231,11 +231,8 @@ static int ag71xx_ring_rx_refill(struct ag71xx *ag) struct sk_buff *skb; skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE); - if (skb == NULL) { - printk(KERN_ERR "%s: no memory for skb\n", - ag->dev->name); + if (skb == NULL) break; - } dma_map_single(NULL, skb->data, AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE); @@ -299,17 +296,6 @@ static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac) ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t); } -#define AR71XX_MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \ - MAC_CFG1_SRX | MAC_CFG1_STX) -#define AR71XX_FIFO_CFG5_INIT 0x0007ffef - -#define AR91XX_MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \ - MAC_CFG1_SRX | MAC_CFG1_STX | \ - MAC_CFG1_TFC | MAC_CFG1_RFC) -#define AR91XX_FIFO_CFG5_INIT 0x0007efef - -#define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT) - static void ag71xx_dma_reset(struct ag71xx *ag) { int i; @@ -345,6 +331,25 @@ static void ag71xx_dma_reset(struct ag71xx *ag) ag71xx_dump_dma_regs(ag); } +#define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \ + MAC_CFG1_SRX | MAC_CFG1_STX) + +#define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT) + +#define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \ + FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \ + FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \ + FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \ + FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \ + FIFO_CFG4_VT) + +#define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \ + FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \ + FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \ + FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \ + FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \ + FIFO_CFG5_17 | FIFO_CFG5_SF) + static void ag71xx_hw_init(struct ag71xx *ag) { struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); @@ -358,8 +363,7 @@ static void ag71xx_hw_init(struct ag71xx *ag) mdelay(100); /* setup MAC configuration registers */ - ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, - pdata->is_ar91xx ? AR91XX_MAC_CFG1_INIT : AR71XX_MAC_CFG1_INIT); + ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_INIT); ag71xx_sb(ag, AG71XX_REG_MAC_CFG2, MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK); @@ -373,10 +377,8 @@ static void ag71xx_hw_init(struct ag71xx *ag) ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT); ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000); ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff); - ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, 0x0000ffff); - ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, - pdata->is_ar91xx ? AR91XX_FIFO_CFG5_INIT - : AR71XX_FIFO_CFG5_INIT); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT); ag71xx_dma_reset(ag); } @@ -443,6 +445,7 @@ static int ag71xx_stop(struct net_device *dev) ag71xx_phy_stop(ag); napi_disable(&ag->napi); + del_timer_sync(&ag->oom_timer); spin_unlock_irqrestore(&ag->lock, flags); @@ -551,6 +554,14 @@ static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) return -EOPNOTSUPP; } +static void ag71xx_oom_timer_handler(unsigned long data) +{ + struct net_device *dev = (struct net_device *) data; + struct ag71xx *ag = netdev_priv(dev); + + netif_rx_schedule(dev, &ag->napi); +} + static void ag71xx_tx_timeout(struct net_device *dev) { struct ag71xx *ag = netdev_priv(dev); @@ -664,6 +675,7 @@ static int ag71xx_poll(struct napi_struct *napi, int limit) struct ag71xx *ag = container_of(napi, struct ag71xx, napi); struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); struct net_device *dev = ag->dev; + struct ag71xx_ring *rx_ring; unsigned long flags; u32 status; int done; @@ -674,7 +686,9 @@ static int ag71xx_poll(struct napi_struct *napi, int limit) DBG("%s: processing RX ring\n", dev->name); done = ag71xx_rx_packets(ag, limit); - /* TODO: add OOM handler */ + rx_ring = &ag->rx_ring; + if (rx_ring->buf[rx_ring->dirty % AG71XX_RX_RING_SIZE].skb == NULL) + goto oom; status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS); if (unlikely(status & RX_STATUS_OF)) { @@ -702,13 +716,21 @@ static int ag71xx_poll(struct napi_struct *napi, int limit) spin_lock_irqsave(&ag->lock, flags); ag71xx_int_enable(ag, AG71XX_INT_POLL); spin_unlock_irqrestore(&ag->lock, flags); - return done; + return 0; } more: DBG("%s: stay in polling mode, done=%d, limit=%d\n", dev->name, done, limit); - return done; + return 1; + + oom: + if (netif_msg_rx_err(ag)) + printk(KERN_DEBUG "%s: out of memory\n", dev->name); + + mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL); + netif_rx_complete(dev, napi); + return 0; } static irqreturn_t ag71xx_interrupt(int irq, void *dev_id) @@ -842,16 +864,13 @@ static int __init ag71xx_probe(struct platform_device *pdev) dev->tx_timeout = ag71xx_tx_timeout; INIT_WORK(&ag->restart_work, ag71xx_restart_work_func); - netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT); + init_timer(&ag->oom_timer); + ag->oom_timer.data = (unsigned long) dev; + ag->oom_timer.function = ag71xx_oom_timer_handler; - if (is_valid_ether_addr(pdata->mac_addr)) - memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN); - else { - dev->dev_addr[0] = 0xde; - dev->dev_addr[1] = 0xad; - get_random_bytes(&dev->dev_addr[2], 3); - dev->dev_addr[5] = pdev->id & 0xff; - } + memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN); + + netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT); err = register_netdev(dev); if (err) {