static void cpmac_check_status(struct net_device *dev)
{
struct cpmac_priv *priv = netdev_priv(dev);
u32 macstatus = cpmac_read(priv->regs, CPMAC_MAC_STATUS);
int rx_channel = (macstatus >> 8) & 7;
int rx_code = (macstatus >> 12) & 15;
int tx_channel = (macstatus >> 16) & 7;
int tx_code = (macstatus >> 20) & 15;
if (rx_code || tx_code) {
if (netif_msg_drv(priv) && net_ratelimit()) {
/* Can't find any documentation on what these
*error codes actually are. So just log them and hope..
*/
if (rx_code)
printk(KERN_WARNING "%s: host error %d on rx "
"channel %d (macstatus %08x), resetting\n",
dev->name, rx_code, rx_channel, macstatus);
if (tx_code)
printk(KERN_WARNING "%s: host error %d on tx "
"channel %d (macstatus %08x), resetting\n",
dev->name, tx_code, tx_channel, macstatus);
}
netif_tx_stop_all_queues(dev);
cpmac_hw_stop(dev);
if (schedule_work(&priv->reset_work))
atomic_inc(&priv->reset_pending);
if (unlikely(netif_msg_hw(priv)))
cpmac_dump_regs(dev);
}
cpmac_write(priv->regs, CPMAC_MAC_INT_CLEAR, 0xff);
}
static void cyrf6936_iw_setup(struct cyrf6936_net *p)
{
if (netif_msg_drv(p))
pr_debug("cyrf6936: using wireless extensions\n");
spin_lock_init(&p->iwstats_lock);
p->netdev->wireless_handlers = &cyrf6936_iwdef;
}
static void xgbe_phy_init(struct xgbe_prv_data *pdata)
{
mutex_init(&pdata->an_mutex);
INIT_WORK(&pdata->an_irq_work, xgbe_an_irq_work);
INIT_WORK(&pdata->an_work, xgbe_an_state_machine);
pdata->mdio_mmd = MDIO_MMD_PCS;
/* Initialize supported features */
pdata->phy.supported = SUPPORTED_Autoneg;
pdata->phy.supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
pdata->phy.supported |= SUPPORTED_Backplane;
pdata->phy.supported |= SUPPORTED_10000baseKR_Full;
switch (pdata->speed_set) {
case XGBE_SPEEDSET_1000_10000:
pdata->phy.supported |= SUPPORTED_1000baseKX_Full;
break;
case XGBE_SPEEDSET_2500_10000:
pdata->phy.supported |= SUPPORTED_2500baseX_Full;
break;
}
pdata->fec_ability = XMDIO_READ(pdata, MDIO_MMD_PMAPMD,
MDIO_PMA_10GBR_FECABLE);
pdata->fec_ability &= (MDIO_PMA_10GBR_FECABLE_ABLE |
MDIO_PMA_10GBR_FECABLE_ERRABLE);
if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE)
pdata->phy.supported |= SUPPORTED_10000baseR_FEC;
pdata->phy.advertising = pdata->phy.supported;
pdata->phy.address = 0;
pdata->phy.autoneg = AUTONEG_ENABLE;
pdata->phy.speed = SPEED_UNKNOWN;
pdata->phy.duplex = DUPLEX_UNKNOWN;
pdata->phy.link = 0;
pdata->phy.pause_autoneg = pdata->pause_autoneg;
pdata->phy.tx_pause = pdata->tx_pause;
pdata->phy.rx_pause = pdata->rx_pause;
/* Fix up Flow Control advertising */
pdata->phy.advertising &= ~ADVERTISED_Pause;
pdata->phy.advertising &= ~ADVERTISED_Asym_Pause;
if (pdata->rx_pause) {
pdata->phy.advertising |= ADVERTISED_Pause;
pdata->phy.advertising |= ADVERTISED_Asym_Pause;
}
if (pdata->tx_pause)
pdata->phy.advertising ^= ADVERTISED_Asym_Pause;
if (netif_msg_drv(pdata))
xgbe_dump_phy_registers(pdata);
}
static int xgbe_phy_init(struct xgbe_prv_data *pdata)
{
int ret;
mutex_init(&pdata->an_mutex);
INIT_WORK(&pdata->an_irq_work, xgbe_an_irq_work);
INIT_WORK(&pdata->an_work, xgbe_an_state_machine);
pdata->mdio_mmd = MDIO_MMD_PCS;
/* Check for FEC support */
pdata->fec_ability = XMDIO_READ(pdata, MDIO_MMD_PMAPMD,
MDIO_PMA_10GBR_FECABLE);
pdata->fec_ability &= (MDIO_PMA_10GBR_FECABLE_ABLE |
MDIO_PMA_10GBR_FECABLE_ERRABLE);
/* Setup the phy (including supported features) */
ret = pdata->phy_if.phy_impl.init(pdata);
if (ret)
return ret;
pdata->phy.advertising = pdata->phy.supported;
pdata->phy.address = 0;
if (pdata->phy.advertising & ADVERTISED_Autoneg) {
pdata->phy.autoneg = AUTONEG_ENABLE;
pdata->phy.speed = SPEED_UNKNOWN;
pdata->phy.duplex = DUPLEX_UNKNOWN;
} else {
pdata->phy.autoneg = AUTONEG_DISABLE;
pdata->phy.speed = xgbe_phy_best_advertised_speed(pdata);
pdata->phy.duplex = DUPLEX_FULL;
}
pdata->phy.link = 0;
pdata->phy.pause_autoneg = pdata->pause_autoneg;
pdata->phy.tx_pause = pdata->tx_pause;
pdata->phy.rx_pause = pdata->rx_pause;
/* Fix up Flow Control advertising */
pdata->phy.advertising &= ~ADVERTISED_Pause;
pdata->phy.advertising &= ~ADVERTISED_Asym_Pause;
if (pdata->rx_pause) {
pdata->phy.advertising |= ADVERTISED_Pause;
pdata->phy.advertising |= ADVERTISED_Asym_Pause;
}
if (pdata->tx_pause)
pdata->phy.advertising ^= ADVERTISED_Asym_Pause;
if (netif_msg_drv(pdata))
xgbe_dump_phy_registers(pdata);
return 0;
}
static int __devexit cyrf6936_remove(struct spi_device *spi)
{
struct cyrf6936_net *p = dev_get_drvdata(&spi->dev);
if (netif_msg_drv(p))
dev_info(&spi->dev, "remove\n");
unregister_netdev(p->netdev);
if (p->pollmode)
del_timer_sync(&p->poll_timer);
else
free_irq(spi->irq, p);
free_netdev(p->netdev);
return 0;
}
static int cpmac_poll(struct napi_struct *napi, int budget)
{
struct sk_buff *skb;
struct cpmac_desc *desc, *restart;
struct cpmac_priv *priv = container_of(napi, struct cpmac_priv, napi);
int received = 0, processed = 0;
spin_lock(&priv->rx_lock);
if (unlikely(!priv->rx_head)) {
if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx: polling, but no queue\n",
priv->dev->name);
spin_unlock(&priv->rx_lock);
netif_rx_complete(priv->dev, napi);
return 0;
}
desc = priv->rx_head;
restart = NULL;
while (((desc->dataflags & CPMAC_OWN) == 0) && (received < budget)) {
processed++;
if ((desc->dataflags & CPMAC_EOQ) != 0) {
/* The last update to eoq->hw_next didn't happen
* soon enough, and the receiver stopped here.
*Remember this descriptor so we can restart
* the receiver after freeing some space.
*/
if (unlikely(restart)) {
if (netif_msg_rx_err(priv))
printk(KERN_ERR "%s: poll found a"
" duplicate EOQ: %p and %p\n",
priv->dev->name, restart, desc);
goto fatal_error;
}
restart = desc->next;
}
skb = cpmac_rx_one(priv, desc);
if (likely(skb)) {
netif_receive_skb(skb);
received++;
}
desc = desc->next;
}
if (desc != priv->rx_head) {
/* We freed some buffers, but not the whole ring,
* add what we did free to the rx list */
desc->prev->hw_next = (u32)0;
priv->rx_head->prev->hw_next = priv->rx_head->mapping;
}
/* Optimization: If we did not actually process an EOQ (perhaps because
* of quota limits), check to see if the tail of the queue has EOQ set.
* We should immediately restart in that case so that the receiver can
* restart and run in parallel with more packet processing.
* This lets us handle slightly larger bursts before running
* out of ring space (assuming dev->weight < ring_size) */
if (!restart &&
(priv->rx_head->prev->dataflags & (CPMAC_OWN|CPMAC_EOQ))
== CPMAC_EOQ &&
(priv->rx_head->dataflags & CPMAC_OWN) != 0) {
/* reset EOQ so the poll loop (above) doesn't try to
* restart this when it eventually gets to this descriptor.
*/
priv->rx_head->prev->dataflags &= ~CPMAC_EOQ;
restart = priv->rx_head;
}
if (restart) {
priv->dev->stats.rx_errors++;
priv->dev->stats.rx_fifo_errors++;
if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx dma ring overrun\n",
priv->dev->name);
if (unlikely((restart->dataflags & CPMAC_OWN) == 0)) {
if (netif_msg_drv(priv))
printk(KERN_ERR "%s: cpmac_poll is trying to "
"restart rx from a descriptor that's "
"not free: %p\n",
priv->dev->name, restart);
goto fatal_error;
}
cpmac_write(priv->regs, CPMAC_RX_PTR(0), restart->mapping);
}
priv->rx_head = desc;
spin_unlock(&priv->rx_lock);
if (unlikely(netif_msg_rx_status(priv)))
printk(KERN_DEBUG "%s: poll processed %d packets\n",
priv->dev->name, received);
if (processed == 0) {
/* we ran out of packets to read,
* revert to interrupt-driven mode */
netif_rx_complete(priv->dev, napi);
cpmac_write(priv->regs, CPMAC_RX_INT_ENABLE, 1);
return 0;
}
return 1;
fatal_error:
/* Something went horribly wrong.
* Reset hardware to try to recover rather than wedging. */
if (netif_msg_drv(priv)) {
printk(KERN_ERR "%s: cpmac_poll is confused. "
"Resetting hardware\n", priv->dev->name);
cpmac_dump_all_desc(priv->dev);
printk(KERN_DEBUG "%s: RX_PTR(0)=0x%08x RX_ACK(0)=0x%08x\n",
priv->dev->name,
cpmac_read(priv->regs, CPMAC_RX_PTR(0)),
cpmac_read(priv->regs, CPMAC_RX_ACK(0)));
}
spin_unlock(&priv->rx_lock);
netif_rx_complete(priv->dev, napi);
netif_tx_stop_all_queues(priv->dev);
napi_disable(&priv->napi);
atomic_inc(&priv->reset_pending);
cpmac_hw_stop(priv->dev);
if (!schedule_work(&priv->reset_work))
atomic_dec(&priv->reset_pending);
return 0;
}
