diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_main.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 9ecd6cf9815a..efc42e1f9b4a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -919,6 +919,24 @@ static void stmmac_check_ether_addr(struct stmmac_priv *priv) priv->dev->dev_addr); } +static int stmmac_init_dma_engine(struct stmmac_priv *priv) +{ + int pbl = DEFAULT_DMA_PBL, fixed_burst = 0, burst_len = 0; + + /* Some DMA parameters can be passed from the platform; + * in case of these are not passed we keep a default + * (good for all the chips) and init the DMA! */ + if (priv->plat->dma_cfg) { + pbl = priv->plat->dma_cfg->pbl; + fixed_burst = priv->plat->dma_cfg->fixed_burst; + burst_len = priv->plat->dma_cfg->burst_len; + } + + return priv->hw->dma->init(priv->ioaddr, pbl, fixed_burst, + burst_len, priv->dma_tx_phy, + priv->dma_rx_phy); +} + /** * stmmac_open - open entry point of the driver * @dev : pointer to the device structure. @@ -967,10 +985,7 @@ static int stmmac_open(struct net_device *dev) init_dma_desc_rings(dev); /* DMA initialization and SW reset */ - ret = priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg->pbl, - priv->plat->dma_cfg->fixed_burst, - priv->plat->dma_cfg->burst_len, - priv->dma_tx_phy, priv->dma_rx_phy); + ret = stmmac_init_dma_engine(priv); if (ret < 0) { pr_err("%s: DMA initialization failed\n", __func__); goto open_error; |