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net: bcmgenet: add umac_enable_set helper

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Factor the code touching the UniMAC RX/TX enable bits since we are going
to re-use it for implementing suspend/resume.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-07-21 15:29:20 -07:00 committed by David S. Miller
parent ef3d4f11db
commit e29585b8d8
1 changed files with 24 additions and 13 deletions
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37
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1437,6 +1437,25 @@ static void bcmgenet_free_rx_buffers(struct bcmgenet_priv *priv)
}
}
static void umac_enable_set(struct bcmgenet_priv *priv, u32 mask,
bool enable)
{
u32 reg;
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
if (enable)
reg |= mask;
else
reg &= ~mask;
bcmgenet_umac_writel(priv, reg, UMAC_CMD);
/* UniMAC stops on a packet boundary, wait for a full-size packet
* to be processed
*/
if (enable == 0)
usleep_range(1000, 2000);
}
static int reset_umac(struct bcmgenet_priv *priv)
{
struct device *kdev = &priv->pdev->dev;
@ -1988,9 +2007,7 @@ static int bcmgenet_open(struct net_device *dev)
goto err_clk_disable;
/* disable ethernet MAC while updating its registers */
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
reg &= ~(CMD_TX_EN | CMD_RX_EN);
bcmgenet_umac_writel(priv, reg, UMAC_CMD);
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, false);
bcmgenet_set_hw_addr(priv, dev->dev_addr);
@ -2030,11 +2047,10 @@ static int bcmgenet_open(struct net_device *dev)
/* Start the network engine */
napi_enable(&priv->napi);
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
reg |= (CMD_TX_EN | CMD_RX_EN);
bcmgenet_umac_writel(priv, reg, UMAC_CMD);
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, true);
/* Make sure we reflect the value of CRC_CMD_FWD */
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
priv->crc_fwd_en = !!(reg & CMD_CRC_FWD);
device_set_wakeup_capable(&dev->dev, 1);
@ -2115,16 +2131,13 @@ static int bcmgenet_close(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
int ret;
u32 reg;
netif_dbg(priv, ifdown, dev, "bcmgenet_close\n");
phy_stop(priv->phydev);
/* Disable MAC receive */
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
reg &= ~CMD_RX_EN;
bcmgenet_umac_writel(priv, reg, UMAC_CMD);
umac_enable_set(priv, CMD_RX_EN, false);
netif_tx_stop_all_queues(dev);
@ -2133,9 +2146,7 @@ static int bcmgenet_close(struct net_device *dev)
return ret;
/* Disable MAC transmit. TX DMA disabled have to done before this */
reg = bcmgenet_umac_readl(priv, UMAC_CMD);
reg &= ~CMD_TX_EN;
bcmgenet_umac_writel(priv, reg, UMAC_CMD);
umac_enable_set(priv, CMD_TX_EN, false);
napi_disable(&priv->napi);