/**
* @brief Enable EOM interrupt on cport
*/
static void enable_int(unsigned int cportid) {
struct cport *cport;
unsigned int irqn;
cport = cport_handle(cportid);
if (!cport) {
return;
}
irqn = cportid_to_irqn(cportid);
enable_rx_interrupt(cport);
irq_attach(irqn, irq_rx_eom);
up_enable_irq(irqn);
}
static irqreturn_t agnx_interrupt_handler(int irq, void *dev_id)
{
struct ieee80211_hw *dev = dev_id;
struct agnx_priv *priv = dev->priv;
void __iomem *ctl = priv->ctl;
irqreturn_t ret = IRQ_NONE;
u32 irq_reason;
spin_lock(&priv->lock);
/* printk(KERN_ERR PFX "Get a interrupt %s\n", __func__); */
if (priv->init_status != AGNX_START)
goto out;
/* FiXME Here has no lock, Is this will lead to race? */
irq_reason = ioread32(ctl + AGNX_CIR_BLKCTL);
if (!(irq_reason & 0x7))
goto out;
ret = IRQ_HANDLED;
priv->irq_status = ioread32(ctl + AGNX_INT_STAT);
/* printk(PFX "Interrupt reason is 0x%x\n", irq_reason); */
/* Make sure the txm and txd flags don't conflict with other unknown
interrupt flag, maybe is not necessary */
irq_reason &= 0xF;
disable_rx_interrupt(priv);
/* TODO Make sure the card finished initialized */
agnx_interrupt_ack(priv, &irq_reason);
if (irq_reason & AGNX_STAT_RX)
handle_rx_irq(priv);
if (irq_reason & AGNX_STAT_TXD)
handle_txd_irq(priv);
if (irq_reason & AGNX_STAT_TXM)
handle_txm_irq(priv);
if (irq_reason & AGNX_STAT_X)
handle_other_irq(priv);
enable_rx_interrupt(priv);
out:
spin_unlock(&priv->lock);
return ret;
} /* agnx_interrupt_handler */
