Beispiel #1
0
static int bgmac_dma_init(struct bgmac *bgmac)
{
	struct bgmac_dma_ring *ring;
	int i, err;

	for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
		ring = &bgmac->tx_ring[i];

		if (!ring->unaligned)
			bgmac_dma_tx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI,
			    upper_32_bits(ring->dma_base));
		if (ring->unaligned)
			bgmac_dma_tx_enable(bgmac, ring);

		ring->start = 0;
		ring->end = 0;	/* Points the slot that should *not* be read */
	}

	for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
		int j;

		ring = &bgmac->rx_ring[i];

		if (!ring->unaligned)
			bgmac_dma_rx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
			    upper_32_bits(ring->dma_base));
		if (ring->unaligned)
			bgmac_dma_rx_enable(bgmac, ring);

		ring->start = 0;
		ring->end = 0;
		for (j = 0; j < BGMAC_RX_RING_SLOTS; j++) {
			err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]);
			if (err)
				goto error;

			bgmac_dma_rx_setup_desc(bgmac, ring, j);
		}

		bgmac_dma_rx_update_index(bgmac, ring);
	}

	return 0;

error:
	bgmac_dma_cleanup(bgmac);
	return err;
}
Beispiel #2
0
static void bgmac_dma_init(struct bgmac *bgmac)
{
	struct bgmac_dma_ring *ring;
	int i;

	for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
		ring = &bgmac->tx_ring[i];

		if (!ring->unaligned)
			bgmac_dma_tx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI,
			    upper_32_bits(ring->dma_base));
		if (ring->unaligned)
			bgmac_dma_tx_enable(bgmac, ring);

		ring->start = 0;
		ring->end = 0;	/* Points the slot that should *not* be read */
	}

	for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
		int j;

		ring = &bgmac->rx_ring[i];

		if (!ring->unaligned)
			bgmac_dma_rx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
			    upper_32_bits(ring->dma_base));
		if (ring->unaligned)
			bgmac_dma_rx_enable(bgmac, ring);

		for (j = 0; j < ring->num_slots; j++)
			bgmac_dma_rx_setup_desc(bgmac, ring, j);

		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
			    ring->index_base +
			    ring->num_slots * sizeof(struct bgmac_dma_desc));

		ring->start = 0;
		ring->end = 0;
	}
}
Beispiel #3
0
static void bgmac_dma_init(struct bgmac *bgmac)
{
	struct bgmac_dma_ring *ring;
	struct bgmac_dma_desc *dma_desc;
	u32 ctl0, ctl1;
	int i;

	for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
		ring = &bgmac->tx_ring[i];

		/* We don't implement unaligned addressing, so enable first */
		bgmac_dma_tx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI,
			    upper_32_bits(ring->dma_base));

		ring->start = 0;
		ring->end = 0;	/* Points the slot that should *not* be read */
	}

	for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
		int j;

		ring = &bgmac->rx_ring[i];

		/* We don't implement unaligned addressing, so enable first */
		bgmac_dma_rx_enable(bgmac, ring);
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
			    lower_32_bits(ring->dma_base));
		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
			    upper_32_bits(ring->dma_base));

		for (j = 0, dma_desc = ring->cpu_base; j < ring->num_slots;
		     j++, dma_desc++) {
			ctl0 = ctl1 = 0;

			if (j == ring->num_slots - 1)
				ctl0 |= BGMAC_DESC_CTL0_EOT;
			ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN;
			/* Is there any BGMAC device that requires extension? */
			/* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) &
			 * B43_DMA64_DCTL1_ADDREXT_MASK;
			 */

			dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[j].dma_addr));
			dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[j].dma_addr));
			dma_desc->ctl0 = cpu_to_le32(ctl0);
			dma_desc->ctl1 = cpu_to_le32(ctl1);
		}

		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
			    ring->num_slots * sizeof(struct bgmac_dma_desc));

		ring->start = 0;
		ring->end = 0;
	}
}