/*
* Handle an interrupt.
*/
static void
e1000_intr(unsigned int __unused mask)
{
e1000_t *e;
u32_t cause;
E1000_DEBUG(3, ("e1000: interrupt\n"));
e = &e1000_state;
/* Reenable interrupts. */
if (sys_irqenable(&e->irq_hook) != OK)
panic("failed to re-enable IRQ");
/* Read the Interrupt Cause Read register. */
if ((cause = e1000_reg_read(e, E1000_REG_ICR)) != 0) {
if (cause & E1000_REG_ICR_LSC)
e1000_link_changed(e);
if (cause & (E1000_REG_ICR_RXO | E1000_REG_ICR_RXT))
netdriver_recv();
if (cause & (E1000_REG_ICR_TXQE | E1000_REG_ICR_TXDW))
netdriver_send();
}
}
static void
virtio_net_check_pending(void)
{
/* Pending read and something in recv_list? */
if (!STAILQ_EMPTY(&recv_list))
netdriver_recv();
if (!STAILQ_EMPTY(&free_list))
netdriver_send();
}
/*============================================================================*
* lan8710a_intr *
*============================================================================*/
static void
lan8710a_intr(unsigned int mask)
{
u32_t dma_status;
/* Check the card for interrupt reason(s). */
u32_t rx_stat = lan8710a_reg_read(CPSW_WR_C0_RX_STAT);
u32_t tx_stat = lan8710a_reg_read(CPSW_WR_C0_TX_STAT);
u32_t cp;
/* Handle interrupts. */
if (rx_stat) {
cp = lan8710a_reg_read(CPDMA_STRAM_RX_CP(0));
netdriver_recv();
lan8710a_reg_write(CPDMA_STRAM_RX_CP(0), cp);
lan8710a_reg_write(CPDMA_EOI_VECTOR, RX_INT);
}
if (tx_stat) {
cp = lan8710a_reg_read(CPDMA_STRAM_TX_CP(0));
/* Disabling channels, where Tx interrupt occurred */
lan8710a_reg_set(CPDMA_TX_INTMASK_CLEAR, tx_stat);
netdriver_send();
lan8710a_reg_write(CPDMA_STRAM_TX_CP(0), cp);
lan8710a_reg_write(CPDMA_EOI_VECTOR, TX_INT);
}
dma_status = lan8710a_reg_read(CPDMA_STATUS);
if (dma_status & CPDMA_ERROR) {
LAN8710A_DEBUG_PRINT(("CPDMA error: 0x%X, reset", dma_status));
lan8710a_dma_reset_init();
}
/* Re-enable Rx interrupt. */
if (mask & (1 << RX_INT))
lan8710a_enable_interrupt(RX_INT);
/* Re-enable Tx interrupt. */
if (mask & (1 << TX_INT))
lan8710a_enable_interrupt(TX_INT);
}