Function tx_descs_init

bsp/cvitek/drivers/libraries/eth/dw_eth_mac.c:76–128

}

static void tx_descs_init(eth_mac_handle_t handle)
{
    gmac_dev_t *mac_dev = (gmac_dev_t *)handle;
    struct dw_gmac_priv *priv = mac_dev->priv;
    struct dw_gmac_dma_regs *dma_reg = priv->dma_regs_p;
    struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0];
    char *txbuffs = &priv->txbuffs[0];
    struct dmamacdescr *desc_p;
    uint32_t idx;

    for (idx = 0; idx < CVI_CONFIG_TX_DESCR_NUM; idx ++) {
        desc_p = &desc_table_p[idx];
#ifdef RT_USING_SMART
        desc_p->dmamac_addr = (unsigned long)rt_kmem_v2p((void *)&txbuffs[idx * CVI_CONFIG_ETH_BUFSIZE]);
        desc_p->dmamac_next = (unsigned long)rt_kmem_v2p((void *)&desc_table_p[idx + 1]);
#else
        desc_p->dmamac_addr = (unsigned long)&txbuffs[idx * CVI_CONFIG_ETH_BUFSIZE];
        desc_p->dmamac_next = (unsigned long)&desc_table_p[idx + 1];
#endif

#if defined(CONFIG_DW_ALTDESCRIPTOR)
        desc_p->txrx_status &= ~(CVI_DESC_TXSTS_TXINT | CVI_DESC_TXSTS_TXLAST |
                CVI_DESC_TXSTS_TXFIRST | CVI_DESC_TXSTS_TXCRCDIS |
                CVI_DESC_TXSTS_TXCHECKINSCTRL |
                CVI_DESC_TXSTS_TXRINGEND | CVI_DESC_TXSTS_TXPADDIS);

        desc_p->txrx_status |= CVI_DESC_TXSTS_TXCHAIN;
        desc_p->dmamac_cntl = 0;
        desc_p->txrx_status &= ~(CVI_DESC_TXSTS_MSK | CVI_DESC_TXSTS_OWNBYDMA);
#else
        desc_p->dmamac_cntl = CVI_DESC_TXCTRL_TXCHAIN;
        desc_p->txrx_status = 0;
#endif
    }

    /* Correcting the last pointer of the chain */
    #ifdef RT_USING_SMART
    desc_p->dmamac_next = (unsigned long)rt_kmem_v2p((void *)&desc_table_p[0]);
    #else
    desc_p->dmamac_next = (unsigned long)&desc_table_p[0];
    #endif

    /* Flush all Tx buffer descriptors at once */
    rt_hw_cpu_dcache_clean((void *)priv->tx_mac_descrtable, sizeof(priv->tx_mac_descrtable));

#ifdef RT_USING_SMART
    dma_reg->txdesclistaddr = (rt_ubase_t)rt_kmem_v2p((void *)&desc_table_p[0]);
#else
    dma_reg->txdesclistaddr = (reg_type)&desc_table_p[0];
#endif

    priv->tx_currdescnum = 0;
}

static void rx_descs_init(eth_mac_handle_t handle)
{