Function arge_intr

freebsd/mips/atheros/if_arge.c:2585–2692

}

static void
arge_intr(void *arg)
{
	struct arge_softc	*sc = arg;
	uint32_t		status;
	struct ifnet		*ifp = sc->arge_ifp;
#ifdef	ARGE_DEBUG
	int i;
#endif

	status = ARGE_READ(sc, AR71XX_DMA_INTR_STATUS);
	status |= sc->arge_intr_status;

	ARGEDEBUG(sc, ARGE_DBG_INTR, "int status(intr) = %b\n", status,
	    "\20\10\7RX_OVERFLOW\5RX_PKT_RCVD"
	    "\4TX_BUS_ERROR\2TX_UNDERRUN\1TX_PKT_SENT");

	/*
	 * Is it our interrupt at all?
	 */
	if (status == 0) {
		sc->stats.intr_stray2++;
		return;
	}

#ifdef	ARGE_DEBUG
	for (i = 0; i < 32; i++) {
		if (status & (1U << i)) {
			sc->intr_stats.count[i]++;
		}
	}
#endif

	if (status & DMA_INTR_RX_BUS_ERROR) {
		ARGE_WRITE(sc, AR71XX_DMA_RX_STATUS, DMA_RX_STATUS_BUS_ERROR);
		device_printf(sc->arge_dev, "RX bus error");
		return;
	}

	if (status & DMA_INTR_TX_BUS_ERROR) {
		ARGE_WRITE(sc, AR71XX_DMA_TX_STATUS, DMA_TX_STATUS_BUS_ERROR);
		device_printf(sc->arge_dev, "TX bus error");
		return;
	}

	ARGE_LOCK(sc);
	arge_flush_ddr(sc);

	if (status & DMA_INTR_RX_PKT_RCVD)
		arge_rx_locked(sc);

	/*
	 * RX overrun disables the receiver.
	 * Clear indication and re-enable rx.
	 */
	if ( status & DMA_INTR_RX_OVERFLOW) {
		ARGE_WRITE(sc, AR71XX_DMA_RX_STATUS, DMA_RX_STATUS_OVERFLOW);
		ARGE_WRITE(sc, AR71XX_DMA_RX_CONTROL, DMA_RX_CONTROL_EN);