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Subject[PATCH v3 12/13] net: ethernet: ti: cpsw: move napi struct to cpsw_common
Date
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 <ivan.khoronzhuk@linaro.org>
---
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);
--
1.9.1
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