/* The interrupt handler.
* This is called from the MPC core interrupt.
*/
static irqreturn_t
fec_enet_interrupt(int irq, void * dev_id)
{
struct net_device *dev = dev_id;
volatile fec_t *fecp;
uint int_events;
#ifdef CONFIG_FEC_PACKETHOOK
struct fec_enet_private *fep = dev->priv;
__u32 regval;
if (fep->ph_regaddr) regval = *fep->ph_regaddr;
#endif
fecp = (volatile fec_t*)dev->base_addr;
/* Get the interrupt events that caused us to be here.
*/
while ((int_events = fecp->fec_ievent) != 0) {
fecp->fec_ievent = int_events;
if ((int_events & (FEC_ENET_HBERR | FEC_ENET_BABR |
FEC_ENET_BABT | FEC_ENET_EBERR)) != 0) {
printk("FEC ERROR %x\n", int_events);
}
/* Handle receive event in its own function.
*/
if (int_events & FEC_ENET_RXF) {
#ifdef CONFIG_FEC_PACKETHOOK
fec_enet_rx(dev, regval);
#else
fec_enet_rx(dev);
#endif
}
/* Transmit OK, or non-fatal error. Update the buffer
descriptors. FEC handles all errors, we just discover
them as part of the transmit process.
*/
if (int_events & FEC_ENET_TXF) {
#ifdef CONFIG_FEC_PACKETHOOK
fec_enet_tx(dev, regval);
#else
fec_enet_tx(dev);
#endif
}
if (int_events & FEC_ENET_MII) {
#ifdef CONFIG_USE_MDIO
fec_enet_mii(dev);
#else
printk("%s[%d] %s: unexpected FEC_ENET_MII event\n", __FILE__,__LINE__,__FUNCTION__);
#endif /* CONFIG_USE_MDIO */
}
}
return IRQ_RETVAL(IRQ_HANDLED);
}
static irqreturn_t
fec_enet_interrupt(int irq, void *dev_id)
{
struct net_device *ndev = dev_id;
struct fec_enet_private *fep = netdev_priv(ndev);
uint int_events;
irqreturn_t ret = IRQ_NONE;
do {
int_events = readl(fep->hwp + FEC_IEVENT);
writel(int_events, fep->hwp + FEC_IEVENT);
if (int_events & FEC_ENET_RXF) {
ret = IRQ_HANDLED;
fec_enet_rx(ndev);
}
/* Transmit OK, or non-fatal error. Update the buffer
* descriptors. FEC handles all errors, we just discover
* them as part of the transmit process.
*/
if (int_events & FEC_ENET_TXF) {
ret = IRQ_HANDLED;
fec_enet_tx(ndev);
}
if (int_events & FEC_ENET_MII) {
ret = IRQ_HANDLED;
complete(&fep->mdio_done);
}
} while (int_events);
return ret;
}
static irqreturn_t
fec_enet_interrupt(int irq, void *dev_id)
{
struct net_device *ndev = dev_id;
struct fec_enet_private *fep = netdev_priv(ndev);
struct fec_ptp_private *fpp = fep->ptp_priv;
uint int_events;
ulong flags;
irqreturn_t ret = IRQ_NONE;
do {
int_events = readl(fep->hwp + FEC_IEVENT);
writel(int_events, fep->hwp + FEC_IEVENT);
if (int_events & FEC_ENET_RXF) {
ret = IRQ_HANDLED;
spin_lock_irqsave(&fep->hw_lock, flags);
if (fep->use_napi) {
/* Disable the RX interrupt */
if (napi_schedule_prep(&fep->napi)) {
fec_rx_int_is_enabled(ndev, false);
__napi_schedule(&fep->napi);
}
} else
fec_enet_rx(ndev);
spin_unlock_irqrestore(&fep->hw_lock, flags);
}
/* Transmit OK, or non-fatal error. Update the buffer
* descriptors. FEC handles all errors, we just discover
* them as part of the transmit process.
*/
if (int_events & FEC_ENET_TXF) {
ret = IRQ_HANDLED;
fec_enet_tx(ndev);
}
if (int_events & FEC_ENET_TS_TIMER) {
ret = IRQ_HANDLED;
if (fep->ptimer_present && fpp)
fpp->prtc++;
}
if (int_events & FEC_ENET_MII) {
ret = IRQ_HANDLED;
complete(&fep->mdio_done);
}
} while (int_events);
return ret;
}
static int fec_enet_rx_napi(struct napi_struct *napi, int budget)
{
struct net_device *ndev = napi->dev;
int pkts = fec_enet_rx(ndev, budget);
struct fec_enet_private *fep = netdev_priv(ndev);
fec_enet_tx(ndev);
if (pkts < budget) {
napi_complete(napi);
writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
}
return pkts;
}
static int
fec_enet_interrupt(rtdm_irq_t *irq_handle)
{
struct rtnet_device *ndev =
rtdm_irq_get_arg(irq_handle, struct rtnet_device); /* RTnet */
struct fec_enet_private *fep = rtnetdev_priv(ndev);
uint int_events;
irqreturn_t ret = RTDM_IRQ_NONE;
/* RTnet */
nanosecs_abs_t time_stamp = rtdm_clock_read();
int packets = 0;
do {
int_events = readl(fep->hwp + FEC_IEVENT);
writel(int_events, fep->hwp + FEC_IEVENT);
if (int_events & FEC_ENET_RXF) {
ret = RTDM_IRQ_HANDLED;
fec_enet_rx(ndev, &packets, &time_stamp);
}
/* Transmit OK, or non-fatal error. Update the buffer
* descriptors. FEC handles all errors, we just discover
* them as part of the transmit process.
*/
if (int_events & FEC_ENET_TXF) {
ret = RTDM_IRQ_HANDLED;
fec_enet_tx(ndev);
}
if (int_events & FEC_ENET_MII) {
ret = RTDM_IRQ_HANDLED;
rtdm_nrtsig_pend(&fep->mdio_done_sig);
}
} while (int_events);
if (packets > 0)
rt_mark_stack_mgr(ndev);
return ret;
}
