Source of ftmac100.c - uboot-phytec - PHYTEC BitBucket (Stash)

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​
    /* initialize descriptors */
​
    priv->rx_index = 0;
​
    txdes[0].txdes1         = FTMAC100_TXDES1_EDOTR;
    rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
​
    for (i = 0; i < PKTBUFSRX; i++) {
        /* RXBUF_BADR */
        rxdes[i].rxdes2 = (unsigned int)net_rx_packets[i];
        rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
        rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
        rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
    }
​
    /* transmit ring */
​
    writel ((unsigned int)txdes, &ftmac100->txr_badr);
    writel ((unsigned long)txdes, &ftmac100->txr_badr);
​
    /* receive ring */
​
    writel ((unsigned int)rxdes, &ftmac100->rxr_badr);
    writel ((unsigned long)rxdes, &ftmac100->rxr_badr);
​
    /* poll receive descriptor automatically */
​
    writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
​
    /* enable transmitter, receiver */
​
    maccr = FTMAC100_MACCR_XMT_EN |
        FTMAC100_MACCR_RCV_EN |
        FTMAC100_MACCR_XDMA_EN |
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{
    struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
    struct ftmac100_txdes *curr_des = priv->txdes;
    ulong start;
​
    if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
        debug ("%s(): no TX descriptor available\n", __func__);
        return -1;
    }
​
    debug ("%s(%x, %x)\n", __func__, (int)packet, length);
    debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);
​
    length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
​
    /* initiate a transmit sequence */
​
    flush_dcache_range((u32)packet,(u32)packet+length);
    curr_des->txdes2 = (unsigned int)packet;    /* TXBUF_BADR */
    flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
    curr_des->txdes2 = (unsigned int)(unsigned long)packet; /* TXBUF_BADR */
​
    curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
    curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
                FTMAC100_TXDES1_LTS |
                FTMAC100_TXDES1_TXBUF_SIZE (length);
​
    curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
​
    /* start transmit */
​
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}
​
static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
{
    struct ftmac100_data *priv = dev_get_priv(dev);
    struct ftmac100_rxdes *curr_des;
    curr_des = &priv->rxdes[priv->rx_index];
    int len;
    len = __ftmac100_recv(priv);
    if (len)
        *packetp = (void *)curr_des->rxdes2;
        *packetp = (uchar *)(unsigned long)curr_des->rxdes2;
​
    return len ? len : -EAGAIN;
}
​
static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
{
    struct ftmac100_data *priv = dev_get_priv(dev);
    _ftmac100_free_pkt(priv);
    return 0;
}