From dbc4ec522d2ee2b3fa24d329a7a63594aba3b069 Mon Sep 17 00:00:00 2001 From: Ivan Khoronzhuk Date: Wed, 10 Aug 2016 02:22:43 +0300 Subject: [PATCH] net: ethernet: ti: cpsw: move napi struct to cpsw_common The napi structs are common for both net devices in dual_emac mode, In order to not hold duplicate links to them, move to cpsw_common. Signed-off-by: Ivan Khoronzhuk Reviewed-by: Mugunthan V N Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 52 ++++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 30 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index ab5488b..2c2e36a 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -367,6 +367,8 @@ static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset) struct cpsw_common { struct device *dev; struct cpsw_platform_data data; + struct napi_struct napi_rx; + struct napi_struct napi_tx; struct cpsw_ss_regs __iomem *regs; struct cpsw_wr_regs __iomem *wr_regs; u8 __iomem *hw_stats; @@ -382,8 +384,6 @@ struct cpsw_common { struct cpsw_priv { struct net_device *ndev; - struct napi_struct napi_rx; - struct napi_struct napi_tx; struct device *dev; u32 msg_enable; u32 version; @@ -488,7 +488,7 @@ static const struct cpsw_stats cpsw_gstrings_stats[] = { #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats) #define ndev_to_cpsw(ndev) (((struct cpsw_priv *)netdev_priv(ndev))->cpsw) -#define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi) +#define napi_to_cpsw(napi) container_of(napi, struct cpsw_common, napi) #define for_each_slave(priv, func, arg...) \ do { \ struct cpsw_slave *slave; \ @@ -752,8 +752,7 @@ requeue: static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) { - struct cpsw_priv *priv = dev_id; - struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_common *cpsw = dev_id; writel(0, &cpsw->wr_regs->tx_en); cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_TX); @@ -763,14 +762,13 @@ static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id) cpsw->tx_irq_disabled = true; } - napi_schedule(&priv->napi_tx); + napi_schedule(&cpsw->napi_tx); return IRQ_HANDLED; } static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id) { - struct cpsw_priv *priv = dev_id; - struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_common *cpsw = dev_id; cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX); writel(0, &cpsw->wr_regs->rx_en); @@ -780,15 +778,14 @@ static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id) cpsw->rx_irq_disabled = true; } - napi_schedule(&priv->napi_rx); + napi_schedule(&cpsw->napi_rx); return IRQ_HANDLED; } static int cpsw_tx_poll(struct napi_struct *napi_tx, int budget) { - struct cpsw_priv *priv = napi_to_priv(napi_tx); + struct cpsw_common *cpsw = napi_to_cpsw(napi_tx); int num_tx; - struct cpsw_common *cpsw = priv->cpsw; num_tx = cpdma_chan_process(cpsw->txch, budget); if (num_tx < budget) { @@ -805,9 +802,8 @@ static int cpsw_tx_poll(struct napi_struct *napi_tx, int budget) static int cpsw_rx_poll(struct napi_struct *napi_rx, int budget) { - struct cpsw_priv *priv = napi_to_priv(napi_rx); + struct cpsw_common *cpsw = napi_to_cpsw(napi_rx); int num_rx; - struct cpsw_common *cpsw = priv->cpsw; num_rx = cpdma_chan_process(cpsw->rxch, budget); if (num_rx < budget) { @@ -1283,7 +1279,6 @@ static int cpsw_ndo_open(struct net_device *ndev) ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0); if (!cpsw_common_res_usage_state(cpsw)) { - struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(cpsw, 0); int buf_num; /* setup tx dma to fixed prio and zero offset */ @@ -1299,8 +1294,8 @@ static int cpsw_ndo_open(struct net_device *ndev) /* Enable internal fifo flow control */ writel(0x7, &cpsw->regs->flow_control); - napi_enable(&priv_sl0->napi_rx); - napi_enable(&priv_sl0->napi_tx); + napi_enable(&cpsw->napi_rx); + napi_enable(&cpsw->napi_tx); if (cpsw->tx_irq_disabled) { cpsw->tx_irq_disabled = false; @@ -1373,10 +1368,8 @@ static int cpsw_ndo_stop(struct net_device *ndev) netif_carrier_off(priv->ndev); if (cpsw_common_res_usage_state(cpsw) <= 1) { - struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(cpsw, 0); - - napi_disable(&priv_sl0->napi_rx); - napi_disable(&priv_sl0->napi_tx); + napi_disable(&cpsw->napi_rx); + napi_disable(&cpsw->napi_tx); cpts_unregister(priv->cpts); cpsw_intr_disable(cpsw); cpdma_ctlr_stop(cpsw->dma); @@ -1656,13 +1649,12 @@ static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p) #ifdef CONFIG_NET_POLL_CONTROLLER static void cpsw_ndo_poll_controller(struct net_device *ndev) { - struct cpsw_priv *priv = netdev_priv(ndev); - struct cpsw_common *cpsw = priv->cpsw; + struct cpsw_common *cpsw = ndev_to_cpsw(ndev); - cpsw_intr_disable(priv->cpsw); - cpsw_rx_interrupt(cpsw->irqs_table[0], priv); - cpsw_tx_interrupt(cpsw->irqs_table[1], priv); - cpsw_intr_enable(priv->cpsw); + cpsw_intr_disable(cpsw); + cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw); + cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw); + cpsw_intr_enable(cpsw); } #endif @@ -2512,7 +2504,7 @@ static int cpsw_probe(struct platform_device *pdev) cpsw->irqs_table[0] = irq; ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt, - 0, dev_name(&pdev->dev), priv); + 0, dev_name(&pdev->dev), cpsw); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); goto clean_ale_ret; @@ -2527,7 +2519,7 @@ static int cpsw_probe(struct platform_device *pdev) cpsw->irqs_table[1] = irq; ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt, - 0, dev_name(&pdev->dev), priv); + 0, dev_name(&pdev->dev), cpsw); if (ret < 0) { dev_err(priv->dev, "error attaching irq (%d)\n", ret); goto clean_ale_ret; @@ -2537,8 +2529,8 @@ static int cpsw_probe(struct platform_device *pdev) ndev->netdev_ops = &cpsw_netdev_ops; ndev->ethtool_ops = &cpsw_ethtool_ops; - netif_napi_add(ndev, &priv->napi_rx, cpsw_rx_poll, CPSW_POLL_WEIGHT); - netif_tx_napi_add(ndev, &priv->napi_tx, cpsw_tx_poll, CPSW_POLL_WEIGHT); + netif_napi_add(ndev, &cpsw->napi_rx, cpsw_rx_poll, CPSW_POLL_WEIGHT); + netif_tx_napi_add(ndev, &cpsw->napi_tx, cpsw_tx_poll, CPSW_POLL_WEIGHT); /* register the network device */ SET_NETDEV_DEV(ndev, &pdev->dev); -- 2.7.4