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net: bcmgenet: modularize bcmgenet_{open,close}

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Introduce a bunch of helper functions: bcmgenet_netif_start,
bcmgenet_netif_stop and bcmgenet_intr_disable to help reuse code that is
going to be necessary for 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 15:29:21 -07:00 committed by David S. Miller
parent e29585b8d8
commit 909ff5efba
1 changed files with 53 additions and 33 deletions
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86
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1488,6 +1488,17 @@ static int reset_umac(struct bcmgenet_priv *priv)
return 0;
}
static void bcmgenet_intr_disable(struct bcmgenet_priv *priv)
{
/* Mask all interrupts.*/
bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_MASK_SET);
bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_CLEAR);
bcmgenet_intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
bcmgenet_intrl2_1_writel(priv, 0xFFFFFFFF, INTRL2_CPU_MASK_SET);
bcmgenet_intrl2_1_writel(priv, 0xFFFFFFFF, INTRL2_CPU_CLEAR);
bcmgenet_intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
}
static int init_umac(struct bcmgenet_priv *priv)
{
struct device *kdev = &priv->pdev->dev;
@ -1516,10 +1527,7 @@ static int init_umac(struct bcmgenet_priv *priv)
if (!GENET_IS_V1(priv) && !GENET_IS_V2(priv))
bcmgenet_rbuf_writel(priv, 1, RBUF_TBUF_SIZE_CTRL);
/* Mask all interrupts.*/
bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_MASK_SET);
bcmgenet_intrl2_0_writel(priv, 0xFFFFFFFF, INTRL2_CPU_CLEAR);
bcmgenet_intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
bcmgenet_intr_disable(priv);
cpu_mask_clear = UMAC_IRQ_RXDMA_BDONE;
@ -1986,6 +1994,23 @@ static void bcmgenet_enable_dma(struct bcmgenet_priv *priv, u32 dma_ctrl)
bcmgenet_tdma_writel(priv, reg, DMA_CTRL);
}
static void bcmgenet_netif_start(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
/* Start the network engine */
napi_enable(&priv->napi);
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, true);
if (phy_is_internal(priv->phydev))
bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
netif_tx_start_all_queues(dev);
phy_start(priv->phydev);
}
static int bcmgenet_open(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
@ -2009,6 +2034,10 @@ static int bcmgenet_open(struct net_device *dev)
/* disable ethernet MAC while updating its registers */
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, false);
/* 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);
bcmgenet_set_hw_addr(priv, dev->dev_addr);
if (phy_is_internal(priv->phydev)) {
@ -2017,6 +2046,8 @@ static int bcmgenet_open(struct net_device *dev)
bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
}
device_set_wakeup_capable(&dev->dev, 1);
/* Disable RX/TX DMA and flush TX queues */
dma_ctrl = bcmgenet_dma_disable(priv);
@ -2044,23 +2075,7 @@ static int bcmgenet_open(struct net_device *dev)
goto err_irq0;
}
/* Start the network engine */
napi_enable(&priv->napi);
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);
if (phy_is_internal(priv->phydev))
bcmgenet_power_up(priv, GENET_POWER_PASSIVE);
netif_tx_start_all_queues(dev);
phy_start(priv->phydev);
bcmgenet_netif_start(dev);
return 0;
@ -2127,6 +2142,22 @@ static int bcmgenet_dma_teardown(struct bcmgenet_priv *priv)
return ret;
}
static void bcmgenet_netif_stop(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
netif_tx_stop_all_queues(dev);
napi_disable(&priv->napi);
phy_stop(priv->phydev);
bcmgenet_intr_disable(priv);
/* Wait for pending work items to complete. Since interrupts are
* disabled no new work will be scheduled.
*/
cancel_work_sync(&priv->bcmgenet_irq_work);
}
static int bcmgenet_close(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
@ -2134,13 +2165,11 @@ static int bcmgenet_close(struct net_device *dev)
netif_dbg(priv, ifdown, dev, "bcmgenet_close\n");
phy_stop(priv->phydev);
bcmgenet_netif_stop(dev);
/* Disable MAC receive */
umac_enable_set(priv, CMD_RX_EN, false);
netif_tx_stop_all_queues(dev);
ret = bcmgenet_dma_teardown(priv);
if (ret)
return ret;
@ -2148,8 +2177,6 @@ static int bcmgenet_close(struct net_device *dev)
/* Disable MAC transmit. TX DMA disabled have to done before this */
umac_enable_set(priv, CMD_TX_EN, false);
napi_disable(&priv->napi);
/* tx reclaim */
bcmgenet_tx_reclaim_all(dev);
bcmgenet_fini_dma(priv);
@ -2157,12 +2184,6 @@ static int bcmgenet_close(struct net_device *dev)
free_irq(priv->irq0, priv);
free_irq(priv->irq1, priv);
/* Wait for pending work items to complete - we are stopping
* the clock now. Since interrupts are disabled, no new work
* will be scheduled.
*/
cancel_work_sync(&priv->bcmgenet_irq_work);
if (phy_is_internal(priv->phydev))
bcmgenet_power_down(priv, GENET_POWER_PASSIVE);
@ -2563,7 +2584,6 @@ static int bcmgenet_remove(struct platform_device *pdev)
return 0;
}
static struct platform_driver bcmgenet_driver = {
.probe = bcmgenet_probe,
.remove = bcmgenet_remove,