target/linux/lantiq/patches-2.6.32/350-dm9000-polling.patch

   1 --- a/drivers/net/dm9000.c
   2 +++ b/drivers/net/dm9000.c
   3 @@ -19,6 +19,7 @@
   4   *     Sascha Hauer <s.hauer@pengutronix.de>
   5   */
   6
   7 +#define DEBUG
   8  #include <linux/module.h>
   9  #include <linux/ioport.h>
  10  #include <linux/netdevice.h>
  11 @@ -121,6 +122,8 @@ typedef struct board_info {
  12         struct delayed_work phy_poll;
  13         struct net_device  *ndev;
  14
  15 +       struct delayed_work irq_poll;   /* for use in irq polling mode */
  16 +
  17         spinlock_t      lock;
  18
  19         struct mii_if_info mii;
  20 @@ -790,12 +793,14 @@ static void dm9000_timeout(struct net_de
  21         unsigned long flags;
  22
  23         /* Save previous register address */
  24 -       reg_save = readb(db->io_addr);
  25         spin_lock_irqsave(&db->lock, flags);
  26 +       reg_save = readb(db->io_addr);
  27
  28         netif_stop_queue(dev);
  29         dm9000_reset(db);
  30         dm9000_init_dm9000(dev);
  31 +       dm9000_reset(db);
  32 +       dm9000_init_dm9000(dev);
  33         /* We can accept TX packets again */
  34         dev->trans_start = jiffies;
  35         netif_wake_queue(dev);
  36 @@ -867,6 +872,12 @@ dm9000_start_xmit(struct sk_buff *skb, s
  37         /* free this SKB */
  38         dev_kfree_skb(skb);
  39
  40 +       /* directly poll afterwards */
  41 +       if (dev->irq == -1) {
  42 +               cancel_delayed_work(&db->irq_poll);
  43 +               schedule_delayed_work(&db->irq_poll, 1);
  44 +       }
  45 +
  46         return NETDEV_TX_OK;
  47  }
  48
  49 @@ -1073,6 +1084,18 @@ static void dm9000_poll_controller(struc
  50  }
  51  #endif
  52
  53 +static void dm9000_poll_irq(struct work_struct *w)
  54 +{
  55 +       struct delayed_work *dw = to_delayed_work(w);
  56 +       board_info_t *db = container_of(dw, board_info_t, irq_poll);
  57 +       struct net_device *ndev = db->ndev;
  58 +
  59 +       dm9000_interrupt(0, ndev);
  60 +
  61 +       if (netif_running(ndev))
  62 +               schedule_delayed_work(&db->irq_poll, HZ /100);
  63 +}
  64 +
  65  /*
  66   *  Open the interface.
  67   *  The interface is opened whenever "ifconfig" actives it.
  68 @@ -1086,27 +1109,35 @@ dm9000_open(struct net_device *dev)
  69         if (netif_msg_ifup(db))
  70                 dev_dbg(db->dev, "enabling %s\n", dev->name);
  71
  72 -       /* If there is no IRQ type specified, default to something that
  73 -        * may work, and tell the user that this is a problem */
  74 +       if (dev->irq != -1) {
  75 +               /* If there is no IRQ type specified, default to something that
  76 +                * may work, and tell the user that this is a problem */
  77
  78 -       if (irqflags == IRQF_TRIGGER_NONE)
  79 -               dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
  80 +               if (irqflags == IRQF_TRIGGER_NONE)
  81 +                       dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
  82
  83 -       irqflags |= IRQF_SHARED;
  84 +               irqflags |= IRQF_SHARED;
  85
  86 -       if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev))
  87 -               return -EAGAIN;
  88 +               if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
  89 +                       return -EAGAIN;
  90 +       }
  91
  92         /* Initialize DM9000 board */
  93         dm9000_reset(db);
  94         dm9000_init_dm9000(dev);
  95 +       /* workaround: init a second time */
  96 +       dm9000_reset(db);
  97 +       dm9000_init_dm9000(dev);
  98
  99         /* Init driver variable */
 100         db->dbug_cnt = 0;
 101
 102         mii_check_media(&db->mii, netif_msg_link(db), 1);
 103         netif_start_queue(dev);
 104 -
 105 +
 106 +       if (dev->irq == -1)
 107 +               schedule_delayed_work(&db->irq_poll, HZ / 100);
 108 +
 109         dm9000_schedule_poll(db);
 110
 111         return 0;
 112 @@ -1303,6 +1334,7 @@ dm9000_probe(struct platform_device *pde
 113         mutex_init(&db->addr_lock);
 114
 115         INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
 116 +       INIT_DELAYED_WORK(&db->irq_poll, dm9000_poll_irq);
 117
 118         db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 119         db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);