static void hydra_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page)
{
int nic_base = dev->base_addr;
short *ptrs;
unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) +
((ring_page - NESM_START_PG)<<8);
ptrs = (short *)hdr;
*(ptrs++) = z_readw(hdr_start);
*((short *)hdr) = WORDSWAP(*((short *)hdr));
hdr_start += 2;
*(ptrs++) = z_readw(hdr_start);
*((short *)hdr+1) = WORDSWAP(*((short *)hdr+1));
}
/* Block input and output, similar to the Crynwr packet driver.
* If you are porting to a new ethercard, look at the packet driver source
* for hints. The NEx000 doesn't share the on-board packet memory --
* you have to put the packet out through the "remote DMA" dataport
* using z_writeb.
*/
static void zorro8390_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset)
{
int nic_base = dev->base_addr;
char *buf = skb->data;
short *ptrs;
int cnt;
/* This *shouldn't* happen.
* If it does, it's the last thing you'll see
*/
if (ei_status.dmaing) {
netdev_err(dev, "%s: DMAing conflict [DMAstat:%d][irqlock:%d]\n",
__func__, ei_status.dmaing, ei_status.irqlock);
return;
}
ei_status.dmaing |= 0x01;
z_writeb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
ptrs = (short *)buf;
for (cnt = 0; cnt < count >> 1; cnt++)
*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
if (count & 0x01)
buf[count - 1] = z_readb(NE_BASE + NE_DATAPORT);
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr */
ei_status.dmaing &= ~0x01;
}
/* Grab the 8390 specific header. Similar to the block_input routine, but
* we don't need to be concerned with ring wrap as the header will be at
* the start of a page, so we optimize accordingly.
*/
static void zorro8390_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page)
{
int nic_base = dev->base_addr;
int cnt;
short *ptrs;
/* This *shouldn't* happen.
* If it does, it's the last thing you'll see
*/
if (ei_status.dmaing) {
netdev_err(dev, "%s: DMAing conflict [DMAstat:%d][irqlock:%d]\n",
__func__, ei_status.dmaing, ei_status.irqlock);
return;
}
ei_status.dmaing |= 0x01;
z_writeb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
z_writeb(0, nic_base + NE_EN0_RCNTHI);
z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
ptrs = (short *)hdr;
for (cnt = 0; cnt < sizeof(struct e8390_pkt_hdr) >> 1; cnt++)
*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr */
hdr->count = WORDSWAP(hdr->count);
ei_status.dmaing &= ~0x01;
}
