diff options
Diffstat (limited to 'drivers/net/ethernet/renesas/rswitch.c')
| -rw-r--r-- | drivers/net/ethernet/renesas/rswitch.c | 45 |
1 files changed, 35 insertions, 10 deletions
diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 6083b1c8e4fb..0fc0b6bea753 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -4,6 +4,7 @@ * Copyright (C) 2022 Renesas Electronics Corporation */ +#include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/etherdevice.h> @@ -799,6 +800,7 @@ static int rswitch_poll(struct napi_struct *napi, int budget) struct net_device *ndev = napi->dev; struct rswitch_private *priv; struct rswitch_device *rdev; + unsigned long flags; int quota = budget; rdev = netdev_priv(ndev); @@ -816,10 +818,12 @@ retry: netif_wake_subqueue(ndev, 0); - napi_complete(napi); - - rswitch_enadis_data_irq(priv, rdev->tx_queue->index, true); - rswitch_enadis_data_irq(priv, rdev->rx_queue->index, true); + if (napi_complete_done(napi, budget - quota)) { + spin_lock_irqsave(&priv->lock, flags); + rswitch_enadis_data_irq(priv, rdev->tx_queue->index, true); + rswitch_enadis_data_irq(priv, rdev->rx_queue->index, true); + spin_unlock_irqrestore(&priv->lock, flags); + } out: return budget - quota; @@ -835,8 +839,10 @@ static void rswitch_queue_interrupt(struct net_device *ndev) struct rswitch_device *rdev = netdev_priv(ndev); if (napi_schedule_prep(&rdev->napi)) { + spin_lock(&rdev->priv->lock); rswitch_enadis_data_irq(rdev->priv, rdev->tx_queue->index, false); rswitch_enadis_data_irq(rdev->priv, rdev->rx_queue->index, false); + spin_unlock(&rdev->priv->lock); __napi_schedule(&rdev->napi); } } @@ -1044,7 +1050,7 @@ static void rswitch_rmac_setting(struct rswitch_etha *etha, const u8 *mac) static void rswitch_etha_enable_mii(struct rswitch_etha *etha) { rswitch_modify(etha->addr, MPIC, MPIC_PSMCS_MASK | MPIC_PSMHT_MASK, - MPIC_PSMCS(0x05) | MPIC_PSMHT(0x06)); + MPIC_PSMCS(etha->psmcs) | MPIC_PSMHT(0x06)); rswitch_modify(etha->addr, MPSM, 0, MPSM_MFF_C45); } @@ -1248,7 +1254,7 @@ static void rswitch_adjust_link(struct net_device *ndev) phy_print_status(phydev); if (phydev->link) phy_power_on(rdev->serdes); - else + else if (rdev->serdes->power_count) phy_power_off(rdev->serdes); rdev->etha->link = phydev->link; @@ -1440,14 +1446,17 @@ static void rswitch_ether_port_deinit_all(struct rswitch_private *priv) static int rswitch_open(struct net_device *ndev) { struct rswitch_device *rdev = netdev_priv(ndev); + unsigned long flags; phy_start(ndev->phydev); napi_enable(&rdev->napi); netif_start_queue(ndev); + spin_lock_irqsave(&rdev->priv->lock, flags); rswitch_enadis_data_irq(rdev->priv, rdev->tx_queue->index, true); rswitch_enadis_data_irq(rdev->priv, rdev->rx_queue->index, true); + spin_unlock_irqrestore(&rdev->priv->lock, flags); if (bitmap_empty(rdev->priv->opened_ports, RSWITCH_NUM_PORTS)) iowrite32(GWCA_TS_IRQ_BIT, rdev->priv->addr + GWTSDIE); @@ -1461,6 +1470,7 @@ static int rswitch_stop(struct net_device *ndev) { struct rswitch_device *rdev = netdev_priv(ndev); struct rswitch_gwca_ts_info *ts_info, *ts_info2; + unsigned long flags; netif_tx_stop_all_queues(ndev); bitmap_clear(rdev->priv->opened_ports, rdev->port, 1); @@ -1476,8 +1486,10 @@ static int rswitch_stop(struct net_device *ndev) kfree(ts_info); } + spin_lock_irqsave(&rdev->priv->lock, flags); rswitch_enadis_data_irq(rdev->priv, rdev->tx_queue->index, false); rswitch_enadis_data_irq(rdev->priv, rdev->rx_queue->index, false); + spin_unlock_irqrestore(&rdev->priv->lock, flags); phy_stop(ndev->phydev); napi_disable(&rdev->napi); @@ -1682,6 +1694,12 @@ static void rswitch_etha_init(struct rswitch_private *priv, int index) etha->index = index; etha->addr = priv->addr + RSWITCH_ETHA_OFFSET + index * RSWITCH_ETHA_SIZE; etha->coma_addr = priv->addr; + + /* MPIC.PSMCS = (clk [MHz] / (MDC frequency [MHz] * 2) - 1. + * Calculating PSMCS value as MDC frequency = 2.5MHz. So, multiply + * both the numerator and the denominator by 10. + */ + etha->psmcs = clk_get_rate(priv->clk) / 100000 / (25 * 2) - 1; } static int rswitch_device_alloc(struct rswitch_private *priv, int index) @@ -1887,6 +1905,11 @@ static int renesas_eth_sw_probe(struct platform_device *pdev) priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; + spin_lock_init(&priv->lock); + + priv->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(priv->clk)) + return PTR_ERR(priv->clk); attr = soc_device_match(rswitch_soc_no_speed_change); if (attr) @@ -1941,15 +1964,17 @@ static void rswitch_deinit(struct rswitch_private *priv) rswitch_gwca_hw_deinit(priv); rcar_gen4_ptp_unregister(priv->ptp_priv); - for (i = 0; i < RSWITCH_NUM_PORTS; i++) { + rswitch_for_each_enabled_port(priv, i) { struct rswitch_device *rdev = priv->rdev[i]; - phy_exit(priv->rdev[i]->serdes); - rswitch_ether_port_deinit_one(rdev); unregister_netdev(rdev->ndev); - rswitch_device_free(priv, i); + rswitch_ether_port_deinit_one(rdev); + phy_exit(priv->rdev[i]->serdes); } + for (i = 0; i < RSWITCH_NUM_PORTS; i++) + rswitch_device_free(priv, i); + rswitch_gwca_ts_queue_free(priv); rswitch_gwca_linkfix_free(priv); |