/**
* e1000_irq - enable or Disable interrupts
*
* @v adapter e1000 adapter
* @v action requested interrupt action
**/
static void
e1000_irq ( struct net_device *netdev, int enable )
{
struct e1000_adapter *adapter = netdev_priv(netdev);
DBG ( "e1000_irq\n" );
if ( enable )
e1000_irq_enable ( adapter );
else
e1000_irq_disable ( adapter );
}
int wait_packet_function_ptr(void *data, int mode) {
struct e1000_adapter *adapter = (struct e1000_adapter*)data;
if(unlikely(enable_debug)) printk("[wait_packet_function_ptr] called [mode=%d]\n", mode);
if(mode == 1) {
struct e1000_ring *rx_ring = adapter->rx_ring;
union e1000_rx_desc_extended *rx_desc;
u16 i = E1000_READ_REG(&adapter->hw, E1000_RDT(0));
/* Very important: update the value from the register set from userland.
* Here i is the last I've read (zero-copy implementation) */
if(++i == rx_ring->count) i = 0;
/* Here i is the next I have to read */
rx_ring->next_to_clean = i;
rx_desc = E1000_RX_DESC_EXT(*rx_ring, rx_ring->next_to_clean);
if(unlikely(enable_debug)) printk("[wait_packet_function_ptr] Check if a packet is arrived\n");
prefetch(rx_desc);
if(!(le32_to_cpu(rx_desc->wb.upper.status_error) & E1000_RXD_STAT_DD)) {
adapter->dna.interrupt_received = 0;
#if 0
if(!adapter->dna.interrupt_enabled) {
e1000_irq_enable(adapter), adapter->dna.interrupt_enabled = 1;
if(unlikely(enable_debug)) printk("[wait_packet_function_ptr] Packet not arrived yet: enabling interrupts\n");
}
#endif
} else
adapter->dna.interrupt_received = 1;
return(le32_to_cpu(rx_desc->wb.upper.status_error) & E1000_RXD_STAT_DD);
} else {
if(adapter->dna.interrupt_enabled) {
e1000_irq_disable(adapter);
adapter->dna.interrupt_enabled = 0;
if(unlikely(enable_debug)) printk("[wait_packet_function_ptr] Disabled interrupts\n");
}
return(0);
}
}
/**
* e1000_irq - enable or Disable interrupts
*
* @v adapter e1000 adapter
* @v action requested interrupt action
**/
static void
e1000_irq ( struct net_device *netdev, int enable )
{
struct e1000_adapter *adapter = netdev_priv(netdev);
DBG ( "e1000_irq\n" );
switch ( enable ) {
case 0 :
e1000_irq_disable ( adapter );
break;
case 1 :
e1000_irq_enable ( adapter );
break;
case 2 :
e1000_irq_force ( adapter );
break;
}
}
