static int
e21_close(struct net_device *dev)
{
short ioaddr = dev->base_addr;
if (ei_debug > 1)
printk("%s: Shutting down ethercard.\n", dev->name);
free_irq(dev->irq, dev);
dev->irq = ei_status.saved_irq;
/* Shut off the interrupt line and secondary interface. */
inb(ioaddr + E21_IRQ_LOW);
outb(0, ioaddr + E21_ASIC);
inb(ioaddr + E21_IRQ_HIGH); /* High IRQ bit, and if_port. */
outb(0, ioaddr + E21_ASIC);
ei_close(dev);
/* Double-check that the memory has been turned off, because really
really bad things happen if it isn't. */
mem_off(ioaddr);
return 0;
}
/* Block input and output are easy on shared memory ethercards.
The E21xx makes block_input() especially easy by wrapping the top
ring buffer to the bottom automatically. */
static void
e21_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
short ioaddr = dev->base_addr;
char __iomem *shared_mem = ei_status.mem;
mem_on(ioaddr, shared_mem, (ring_offset>>8));
memcpy_fromio(skb->data, ei_status.mem + (ring_offset & 0xff), count);
mem_off(ioaddr);
}
/* Block input and output are easy on shared memory ethercards.
The E21xx makes block_input() especially easy by wrapping the top
ring buffer to the bottom automatically. */
static void
e21_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
short ioaddr = dev->base_addr;
char __iomem *shared_mem = ei_status.mem;
mem_on(ioaddr, shared_mem, (ring_offset>>8));
/* Packet is always in one chunk -- we can copy + cksum. */
eth_io_copy_and_sum(skb, ei_status.mem + (ring_offset & 0xff), count, 0);
mem_off(ioaddr);
}
static void
e21_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
short ioaddr = dev->base_addr;
volatile char __iomem *shared_mem = ei_status.mem;
/* Set the shared memory window start by doing a read, with the low address
bits specifying the starting page. */
readb(shared_mem + start_page);
mem_on(ioaddr, shared_mem, start_page);
memcpy_toio(shared_mem, buf, count);
mem_off(ioaddr);
}
static void
e21_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
short ioaddr = dev->base_addr;
char __iomem *shared_mem = ei_status.mem;
mem_on(ioaddr, shared_mem, ring_page);
#ifdef notdef
/* Officially this is what we are doing, but the readl() is faster */
memcpy_fromio(hdr, shared_mem, sizeof(struct e8390_pkt_hdr));
#else
((unsigned int*)hdr)[0] = readl(shared_mem);
#endif
/* Turn off memory access: we would need to reprogram the window anyway. */
mem_off(ioaddr);
}
