void fs_init_bds(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
cbd_t *bdp;
struct sk_buff *skb;
int i;
fs_cleanup_bds(dev);
fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
fep->tx_free = fep->tx_ring;
fep->cur_rx = fep->rx_bd_base;
/*
* Initialize the receive buffer descriptors.
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
skb = dev_alloc_skb(ENET_RX_FRSIZE);
if (skb == NULL) {
printk(KERN_WARNING DRV_MODULE_NAME
": %s Memory squeeze, unable to allocate skb\n",
dev->name);
break;
}
fep->rx_skbuff[i] = skb;
skb->dev = dev;
CBDW_BUFADDR(bdp,
dma_map_single(fep->dev, skb->data,
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE));
CBDW_DATLEN(bdp, 0); /* zero */
CBDW_SC(bdp, BD_ENET_RX_EMPTY |
((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
}
/*
* if we failed, fillup remainder
*/
for (; i < fep->rx_ring; i++, bdp++) {
fep->rx_skbuff[i] = NULL;
CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
}
/*
* ...and the same for transmit.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
fep->tx_skbuff[i] = NULL;
CBDW_BUFADDR(bdp, 0);
CBDW_DATLEN(bdp, 0);
CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
}
}
void fs_init_bds(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
cbd_t __iomem *bdp;
struct sk_buff *skb;
int i;
fs_cleanup_bds(dev);
fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
fep->tx_free = fep->tx_ring;
fep->cur_rx = fep->rx_bd_base;
/*
* Initialize the receive buffer descriptors.
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
skb = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
if (skb == NULL)
break;
skb_align(skb, ENET_RX_ALIGN);
fep->rx_skbuff[i] = skb;
CBDW_BUFADDR(bdp,
dma_map_single(fep->dev, skb->data,
L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
DMA_FROM_DEVICE));
CBDW_DATLEN(bdp, 0); /* zero */
CBDW_SC(bdp, BD_ENET_RX_EMPTY |
((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
}
/*
* if we failed, fillup remainder
*/
for (; i < fep->rx_ring; i++, bdp++) {
fep->rx_skbuff[i] = NULL;
CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
}
/*
* ...and the same for transmit.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
fep->tx_skbuff[i] = NULL;
CBDW_BUFADDR(bdp, 0);
CBDW_DATLEN(bdp, 0);
CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
}
}
static void stop(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
fcc_t __iomem *fccp = fep->fcc.fccp;
/* stop ethernet */
C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
/* clear events */
W16(fccp, fcc_fcce, 0xffff);
/* clear interrupt mask */
W16(fccp, fcc_fccm, 0);
fs_cleanup_bds(dev);
}
static void stop(struct net_device *dev)
{
struct fs_enet_private *fep = netdev_priv(dev);
scc_t __iomem *sccp = fep->scc.sccp;
int i;
for (i = 0; (R16(sccp, scc_sccm) == 0) && i < SCC_RESET_DELAY; i++)
udelay(1);
if (i == SCC_RESET_DELAY)
printk(KERN_WARNING DRV_MODULE_NAME
": %s SCC timeout on graceful transmit stop\n",
dev->name);
W16(sccp, scc_sccm, 0);
C32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
fs_cleanup_bds(dev);
}
