Example #1
0
File: bgmac.c Project: 7799/linux
static int bgmac_poll(struct napi_struct *napi, int weight)
{
	struct bgmac *bgmac = container_of(napi, struct bgmac, napi);
	struct bgmac_dma_ring *ring;
	int handled = 0;

	if (bgmac->int_status & BGMAC_IS_TX0) {
		ring = &bgmac->tx_ring[0];
		bgmac_dma_tx_free(bgmac, ring);
		bgmac->int_status &= ~BGMAC_IS_TX0;
	}

	if (bgmac->int_status & BGMAC_IS_RX) {
		ring = &bgmac->rx_ring[0];
		handled += bgmac_dma_rx_read(bgmac, ring, weight);
		bgmac->int_status &= ~BGMAC_IS_RX;
	}

	if (bgmac->int_status) {
		bgmac_err(bgmac, "Unknown IRQs: 0x%08X\n", bgmac->int_status);
		bgmac->int_status = 0;
	}

	if (handled < weight)
		napi_complete(napi);

	bgmac_chip_intrs_on(bgmac);

	return handled;
}
Example #2
0
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
static void bgmac_chip_init(struct bgmac *bgmac)
{
	/* Clear any erroneously pending interrupts */
	bgmac_write(bgmac, BGMAC_INT_STATUS, ~0);

	/* 1 interrupt per received frame */
	bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT);

	/* Enable 802.3x tx flow control (honor received PAUSE frames) */
	bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true);

	bgmac_set_rx_mode(bgmac->net_dev);

	bgmac_write_mac_address(bgmac, bgmac->net_dev->dev_addr);

	if (bgmac->loopback)
		bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
	else
		bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false);

	bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN);

	bgmac_chip_intrs_on(bgmac);

	bgmac_enable(bgmac);
}
Example #3
0
File: bgmac.c Project: 7799/linux
/* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
static void bgmac_chip_init(struct bgmac *bgmac, bool full_init)
{
	struct bgmac_dma_ring *ring;
	int i;

	/* 1 interrupt per received frame */
	bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT);

	/* Enable 802.3x tx flow control (honor received PAUSE frames) */
	bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true);

	bgmac_set_rx_mode(bgmac->net_dev);

	bgmac_write_mac_address(bgmac, bgmac->net_dev->dev_addr);

	if (bgmac->loopback)
		bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false);
	else
		bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false);

	bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN);

	if (full_init) {
		bgmac_dma_init(bgmac);
		if (1) /* FIXME: is there any case we don't want IRQs? */
			bgmac_chip_intrs_on(bgmac);
	} else {
		for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
			ring = &bgmac->rx_ring[i];
			bgmac_dma_rx_enable(bgmac, ring);
		}
	}

	bgmac_enable(bgmac);
}
Example #4
0
static int bgmac_poll(struct napi_struct *napi, int weight)
{
	struct bgmac *bgmac = container_of(napi, struct bgmac, napi);
	int handled = 0;

	/* Ack */
	bgmac_write(bgmac, BGMAC_INT_STATUS, ~0);

	bgmac_dma_tx_free(bgmac, &bgmac->tx_ring[0]);
	handled += bgmac_dma_rx_read(bgmac, &bgmac->rx_ring[0], weight);

	/* Poll again if more events arrived in the meantime */
	if (bgmac_read(bgmac, BGMAC_INT_STATUS) & (BGMAC_IS_TX0 | BGMAC_IS_RX))
		return weight;

	if (handled < weight) {
		napi_complete(napi);
		bgmac_chip_intrs_on(bgmac);
	}

	return handled;
}