static int __init znet_probe (void)
{
int i;
struct netidblk *netinfo;
struct znet_private *znet;
struct net_device *dev;
char *p;
int err = -ENOMEM;
/* This code scans the region 0xf0000 to 0xfffff for a "NETIDBLK". */
for(p = (char *)phys_to_virt(0xf0000); p < (char *)phys_to_virt(0x100000); p++)
if (*p == 'N' && strncmp(p, "NETIDBLK", 8) == 0)
break;
if (p >= (char *)phys_to_virt(0x100000)) {
if (znet_debug > 1)
printk(KERN_INFO "No Z-Note ethernet adaptor found.\n");
return -ENODEV;
}
dev = alloc_etherdev(sizeof(struct znet_private));
if (!dev)
return -ENOMEM;
znet = netdev_priv(dev);
netinfo = (struct netidblk *)p;
dev->base_addr = netinfo->iobase1;
dev->irq = netinfo->irq1;
/* The station address is in the "netidblk" at 0x0f0000. */
for (i = 0; i < 6; i++)
dev->dev_addr[i] = netinfo->netid[i];
printk(KERN_INFO "%s: ZNET at %#3lx, %pM"
", using IRQ %d DMA %d and %d.\n",
dev->name, dev->base_addr, dev->dev_addr,
dev->irq, netinfo->dma1, netinfo->dma2);
if (znet_debug > 1) {
printk(KERN_INFO "%s: vendor '%16.16s' IRQ1 %d IRQ2 %d DMA1 %d DMA2 %d.\n",
dev->name, netinfo->vendor,
netinfo->irq1, netinfo->irq2,
netinfo->dma1, netinfo->dma2);
printk(KERN_INFO "%s: iobase1 %#x size %d iobase2 %#x size %d net type %2.2x.\n",
dev->name, netinfo->iobase1, netinfo->iosize1,
netinfo->iobase2, netinfo->iosize2, netinfo->nettype);
}
if (znet_debug > 0)
printk(KERN_INFO "%s", version);
znet->rx_dma = netinfo->dma1;
znet->tx_dma = netinfo->dma2;
spin_lock_init(&znet->lock);
znet->sia_base = 0xe6; /* Magic address for the 82501 SIA */
znet->sia_size = 2;
/* maz: Despite the '593 being advertised above as using a
* single 8bits I/O port, this driver does many 16bits
* access. So set io_size accordingly */
znet->io_size = 2;
if (!(znet->rx_start = kmalloc (DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA)))
goto free_dev;
if (!(znet->tx_start = kmalloc (DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA)))
goto free_rx;
if (!dma_page_eq (znet->rx_start, znet->rx_start + (RX_BUF_SIZE/2-1)) ||
!dma_page_eq (znet->tx_start, znet->tx_start + (TX_BUF_SIZE/2-1))) {
printk (KERN_WARNING "tx/rx crossing DMA frontiers, giving up\n");
goto free_tx;
}
znet->rx_end = znet->rx_start + RX_BUF_SIZE/2;
znet->tx_buf_len = TX_BUF_SIZE/2;
znet->tx_end = znet->tx_start + znet->tx_buf_len;
/* The ZNET-specific entries in the device structure. */
dev->netdev_ops = &znet_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
err = register_netdev(dev);
if (err)
goto free_tx;
znet_dev = dev;
return 0;
free_tx:
kfree(znet->tx_start);
free_rx:
kfree(znet->rx_start);
free_dev:
free_netdev(dev);
return err;
}
int znet_probe(struct device *dev)
{
int i;
struct netidblk *netinfo;
char *p;
/* This code scans the region 0xf0000 to 0xfffff for a "NETIDBLK". */
for(p = (char *)0xf0000; p < (char *)0x100000; p++)
if (*p == 'N' && strncmp(p, "NETIDBLK", 8) == 0)
break;
if (p >= (char *)0x100000) {
if (znet_debug > 1)
printk(KERN_INFO "No Z-Note ethernet adaptor found.\n");
return ENODEV;
}
netinfo = (struct netidblk *)p;
dev->base_addr = netinfo->iobase1;
dev->irq = netinfo->irq1;
printk(KERN_INFO "%s: ZNET at %#3lx,", dev->name, dev->base_addr);
/* The station address is in the "netidblk" at 0x0f0000. */
for (i = 0; i < 6; i++)
printk(" %2.2x", dev->dev_addr[i] = netinfo->netid[i]);
printk(", using IRQ %d DMA %d and %d.\n", dev->irq, netinfo->dma1,
netinfo->dma2);
if (znet_debug > 1) {
printk(KERN_INFO "%s: vendor '%16.16s' IRQ1 %d IRQ2 %d DMA1 %d DMA2 %d.\n",
dev->name, netinfo->vendor,
netinfo->irq1, netinfo->irq2,
netinfo->dma1, netinfo->dma2);
printk(KERN_INFO "%s: iobase1 %#x size %d iobase2 %#x size %d net type %2.2x.\n",
dev->name, netinfo->iobase1, netinfo->iosize1,
netinfo->iobase2, netinfo->iosize2, netinfo->nettype);
}
if (znet_debug > 0)
printk("%s%s", KERN_INFO, version);
dev->priv = (void *) &zn;
zn.rx_dma = netinfo->dma1;
zn.tx_dma = netinfo->dma2;
/* These should never fail. You can't add devices to a sealed box! */
if (request_irq(dev->irq, &znet_interrupt, 0, "ZNet")
|| request_dma(zn.rx_dma,"ZNet rx")
|| request_dma(zn.tx_dma,"ZNet tx")) {
printk(KERN_WARNING "%s: Not opened -- resource busy?!?\n", dev->name);
return EBUSY;
}
irq2dev_map[dev->irq] = dev;
/* Allocate buffer memory. We can cross a 128K boundary, so we
must be careful about the allocation. It's easiest to waste 8K. */
if (dma_page_eq(dma_buffer1, &dma_buffer1[RX_BUF_SIZE/2-1]))
zn.rx_start = dma_buffer1;
else
zn.rx_start = dma_buffer2;
if (dma_page_eq(dma_buffer3, &dma_buffer3[RX_BUF_SIZE/2-1]))
zn.tx_start = dma_buffer3;
else
zn.tx_start = dma_buffer2;
zn.rx_end = zn.rx_start + RX_BUF_SIZE/2;
zn.tx_buf_len = TX_BUF_SIZE/2;
zn.tx_end = zn.tx_start + zn.tx_buf_len;
/* The ZNET-specific entries in the device structure. */
dev->open = &znet_open;
dev->hard_start_xmit = &znet_send_packet;
dev->stop = &znet_close;
dev->get_stats = net_get_stats;
dev->set_multicast_list = &set_multicast_list;
/* Fill in the 'dev' with ethernet-generic values. */
ether_setup(dev);
return 0;
}
