static void el16_tx_timeout (struct net_device *dev)
{
struct net_local *lp = (struct net_local *) dev->priv;
int ioaddr = dev->base_addr;
unsigned long shmem = dev->mem_start;
if (net_debug > 1)
printk ("%s: transmit timed out, %s? ", dev->name,
isa_readw (shmem + iSCB_STATUS) & 0x8000 ? "IRQ conflict" :
"network cable problem");
/* Try to restart the adaptor. */
if (lp->last_restart == lp->stats.tx_packets) {
if (net_debug > 1)
printk ("Resetting board.\n");
/* Completely reset the adaptor. */
init_82586_mem (dev);
lp->tx_pkts_in_ring = 0;
} else {
/* Issue the channel attention signal and hope it "gets better". */
if (net_debug > 1)
printk ("Kicking board.\n");
isa_writew (0xf000 | CUC_START | RX_START, shmem + iSCB_CMD);
outb (0, ioaddr + SIGNAL_CA); /* Issue channel-attn. */
lp->last_restart = lp->stats.tx_packets;
}
dev->trans_start = jiffies;
netif_wake_queue (dev);
}
static int
eexp_open(struct device *dev)
{
int ioaddr = dev->base_addr;
if (dev->irq == 0 || irqrmap[dev->irq] == 0)
return -ENXIO;
if (irq2dev_map[dev->irq] != 0
/* This is always true, but avoid the false IRQ. */
|| (irq2dev_map[dev->irq] = dev) == 0
|| request_irq(dev->irq, &eexp_interrupt, 0, "EExpress")) {
return -EAGAIN;
}
/* Initialize the 82586 memory and start it. */
init_82586_mem(dev);
/* Enable the interrupt line. */
outb(irqrmap[dev->irq] | 0x08, ioaddr + SET_IRQ);
dev->tbusy = 0;
dev->interrupt = 0;
dev->start = 1;
return 0;
}
static int el16_open(struct net_device *dev)
{
/* Initialize the 82586 memory and start it. */
init_82586_mem(dev);
netif_start_queue(dev);
return 0;
}
static int
eexp_send_packet(struct sk_buff *skb, struct device *dev)
{
struct net_local *lp = (struct net_local *)dev->priv;
int ioaddr = dev->base_addr;
if (dev->tbusy) {
/* If we get here, some higher level has decided we are broken.
There should really be a "kick me" function call instead. */
int tickssofar = jiffies - dev->trans_start;
if (tickssofar < 5)
return 1;
if (net_debug > 1)
printk("%s: transmit timed out, %s? ", dev->name,
inw(ioaddr+SCB_STATUS) & 0x8000 ? "IRQ conflict" :
"network cable problem");
lp->stats.tx_errors++;
/* Try to restart the adaptor. */
if (lp->last_restart == lp->stats.tx_packets) {
if (net_debug > 1) printk("Resetting board.\n");
/* Completely reset the adaptor. */
init_82586_mem(dev);
} else {
/* Issue the channel attention signal and hope it "gets better". */
if (net_debug > 1) printk("Kicking board.\n");
outw(0xf000|CUC_START|RX_START, ioaddr + SCB_CMD);
outb(0, ioaddr + SIGNAL_CA);
lp->last_restart = lp->stats.tx_packets;
}
dev->tbusy=0;
dev->trans_start = jiffies;
}
/* If some higher layer thinks we've missed an tx-done interrupt
we are passed NULL. Caution: dev_tint() handles the cli()/sti()
itself. */
if (skb == NULL) {
dev_tint(dev);
return 0;
}
/* Block a timer-based transmit from overlapping. */
if (set_bit(0, (void*)&dev->tbusy) != 0)
printk("%s: Transmitter access conflict.\n", dev->name);
else {
short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
unsigned char *buf = skb->data;
/* Disable the 82586's input to the interrupt line. */
outb(irqrmap[dev->irq], ioaddr + SET_IRQ);
hardware_send_packet(dev, buf, length);
dev->trans_start = jiffies;
/* Enable the 82586 interrupt input. */
outb(0x08 | irqrmap[dev->irq], ioaddr + SET_IRQ);
}
dev_kfree_skb (skb, FREE_WRITE);
/* You might need to clean up and record Tx statistics here. */
lp->stats.tx_aborted_errors++;
return 0;
}
