static void psc_load_rxdma_base(int set, void *base)
{
psc_write_word(PSC_ENETRD_CMD + set, 0x0100);
psc_write_long(PSC_ENETRD_ADDR + set, (u32)base);
psc_write_long(PSC_ENETRD_LEN + set, N_RX_RING);
psc_write_word(PSC_ENETRD_CMD + set, 0x9800);
}
static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
struct mace_data *mp = netdev_priv(dev);
unsigned long flags;
/* Stop the queue since there's only the one buffer */
local_irq_save(flags);
netif_stop_queue(dev);
if (!mp->tx_count) {
printk(KERN_ERR "macmace: tx queue running but no free buffers.\n");
local_irq_restore(flags);
return NETDEV_TX_BUSY;
}
mp->tx_count--;
local_irq_restore(flags);
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
/* We need to copy into our xmit buffer to take care of alignment and caching issues */
skb_copy_from_linear_data(skb, mp->tx_ring, skb->len);
/* load the Tx DMA and fire it off */
psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, (u32) mp->tx_ring_phys);
psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
mp->tx_slot ^= 0x10;
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
struct mace_data *mp = (struct mace_data *) dev->priv;
/* Stop the queue if the buffer is full */
if (!mp->tx_count) {
netif_stop_queue(dev);
return 1;
}
mp->tx_count--;
mp->stats.tx_packets++;
mp->stats.tx_bytes += skb->len;
/* We need to copy into our xmit buffer to take care of alignment and caching issues */
memcpy((void *) mp->tx_ring, skb->data, skb->len);
/* load the Tx DMA and fire it off */
psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, (u32) mp->tx_ring_phys);
psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
mp->tx_slot ^= 0x10;
dev_kfree_skb(skb);
return 0;
}
static int mace_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
struct mace_data *mp = netdev_priv(dev);
unsigned long flags;
local_irq_save(flags);
netif_stop_queue(dev);
if (!mp->tx_count) {
printk(KERN_ERR "macmace: tx queue running but no free buffers.\n");
local_irq_restore(flags);
return NETDEV_TX_BUSY;
}
mp->tx_count--;
local_irq_restore(flags);
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
skb_copy_from_linear_data(skb, mp->tx_ring, skb->len);
psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, (u32) mp->tx_ring_phys);
psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
mp->tx_slot ^= 0x10;
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
static void mace_load_rxdma_base(struct net_device *dev, int set)
{
struct mace_data *mp = netdev_priv(dev);
psc_write_word(PSC_ENETRD_CMD + set, 0x0100);
psc_write_long(PSC_ENETRD_ADDR + set, (u32) mp->rx_ring_phys);
psc_write_long(PSC_ENETRD_LEN + set, N_RX_RING);
psc_write_word(PSC_ENETRD_CMD + set, 0x9800);
mp->rx_tail = 0;
}
static int mace68k_xmit_start(struct sk_buff *skb, struct net_device *dev)
{
struct mace68k_data *mp = (struct mace68k_data *) dev->priv;
/*
* This may need atomic types ???
*/
printk("mace68k_xmit_start: mp->tx_count = %d, dev->tbusy = %d, mp->tx_ring = %p (%p)\n",
mp->tx_count, dev->tbusy,
mp->tx_ring, virt_to_bus(mp->tx_ring));
psc_debug_dump();
if(mp->tx_count == 0)
{
dev->tbusy=1;
mace68k_dma_intr(IRQ_MAC_MACE_DMA, dev, NULL);
return 1;
}
mp->tx_count--;
/*
* FIXME:
* This is hackish. The memcpy probably isnt needed but
* the rules for alignment are not known. Ideally we'd like
* to just blast the skb directly to ethernet. We also don't
* use the ring properly - just a one frame buffer. That
* also requires cache pushes ;).
*/
memcpy((void *)mp->tx_ring, skb, skb->len);
psc_write_long(PSC_ENETWR_ADDR + mp->tx_slot, virt_to_bus(mp->tx_ring));
psc_write_long(PSC_ENETWR_LEN + mp->tx_slot, skb->len);
psc_write_word(PSC_ENETWR_CMD + mp->tx_slot, 0x9800);
mp->stats.tx_packets++;
mp->stats.tx_bytes+=skb->len;
dev_kfree_skb(skb);
return 0;
}
