target/linux/lantiq/patches/204-owrt-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 @@ -126,6 +127,8 @@ 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 @@ -839,6 +842,8 @@ static void dm9000_timeout(struct net_de
  21         netif_stop_queue(dev);
  22         dm9000_reset(db);
  23         dm9000_init_dm9000(dev);
  24 +       dm9000_reset(db);
  25 +       dm9000_init_dm9000(dev);
  26         /* We can accept TX packets again */
  27         dev->trans_start = jiffies; /* prevent tx timeout */
  28         netif_wake_queue(dev);
  29 @@ -910,6 +915,12 @@ dm9000_start_xmit(struct sk_buff *skb, s
  30         /* free this SKB */
  31         dev_kfree_skb(skb);
  32
  33 +       /* directly poll afterwards */
  34 +       if (dev->irq == -1) {
  35 +               cancel_delayed_work(&db->irq_poll);
  36 +               schedule_delayed_work(&db->irq_poll, 1);
  37 +       }
  38 +
  39         return NETDEV_TX_OK;
  40  }
  41
  42 @@ -1151,6 +1162,18 @@ static void dm9000_poll_controller(struc
  43  }
  44  #endif
  45
  46 +static void dm9000_poll_irq(struct work_struct *w)
  47 +{
  48 +       struct delayed_work *dw = to_delayed_work(w);
  49 +       board_info_t *db = container_of(dw, board_info_t, irq_poll);
  50 +       struct net_device *ndev = db->ndev;
  51 +
  52 +       dm9000_interrupt(0, ndev);
  53 +
  54 +       if (netif_running(ndev))
  55 +               schedule_delayed_work(&db->irq_poll, HZ /100);
  56 +}
  57 +
  58  /*
  59   *  Open the interface.
  60   *  The interface is opened whenever "ifconfig" actives it.
  61 @@ -1164,14 +1187,15 @@ dm9000_open(struct net_device *dev)
  62         if (netif_msg_ifup(db))
  63                 dev_dbg(db->dev, "enabling %s\n", dev->name);
  64
  65 -       /* If there is no IRQ type specified, default to something that
  66 -        * may work, and tell the user that this is a problem */
  67 +       if (dev->irq != -1) {
  68 +               /* If there is no IRQ type specified, default to something that
  69 +                * may work, and tell the user that this is a problem */
  70
  71 -       if (irqflags == IRQF_TRIGGER_NONE)
  72 -               dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
  73 -
  74 -       irqflags |= IRQF_SHARED;
  75 +               if (irqflags == IRQF_TRIGGER_NONE)
  76 +                       dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
  77
  78 +               irqflags |= IRQF_SHARED;
  79 +       }
  80         /* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */
  81         iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */
  82         mdelay(1); /* delay needs by DM9000B */
  83 @@ -1180,8 +1204,14 @@ dm9000_open(struct net_device *dev)
  84         dm9000_reset(db);
  85         dm9000_init_dm9000(dev);
  86
  87 -       if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
  88 -               return -EAGAIN;
  89 +       /* testing: init a second time */
  90 +       dm9000_reset(db);
  91 +       dm9000_init_dm9000(dev);
  92 +
  93 +       if (dev->irq != -1) {
  94 +               if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
  95 +                       return -EAGAIN;
  96 +       }
  97
  98         /* Init driver variable */
  99         db->dbug_cnt = 0;
 100 @@ -1189,6 +1219,9 @@ dm9000_open(struct net_device *dev)
 101         mii_check_media(&db->mii, netif_msg_link(db), 1);
 102         netif_start_queue(dev);
 103
 104 +       if (dev->irq == -1)
 105 +               schedule_delayed_work(&db->irq_poll, HZ / 100);
 106 +
 107         dm9000_schedule_poll(db);
 108
 109         return 0;
 110 @@ -1386,6 +1419,7 @@ dm9000_probe(struct platform_device *pde
 111         mutex_init(&db->addr_lock);
 112
 113         INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
 114 +       INIT_DELAYED_WORK(&db->irq_poll, dm9000_poll_irq);
 115
 116         db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 117         db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);