From 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 Mon Sep 17 00:00:00 2001 From: Ioana Ciornei Date: Tue, 3 Aug 2021 19:57:39 +0300 Subject: [PATCH] dpaa2-switch: use the port index in the IRQ handler The MC firmware supplies us the switch interface index for which an interrupt was triggered. Use this to our advantage instead of looping through all the switch ports and doing unnecessary work. Signed-off-by: Ioana Ciornei Signed-off-by: David S. Miller --- .../net/ethernet/freescale/dpaa2/dpaa2-switch.c | 27 +++++++++------------- 1 file changed, 11 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c index 42d31a4..f8b7601 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c @@ -594,7 +594,7 @@ static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu) return 0; } -static int dpaa2_switch_port_carrier_state_sync(struct net_device *netdev) +static int dpaa2_switch_port_link_state_update(struct net_device *netdev) { struct ethsw_port_priv *port_priv = netdev_priv(netdev); struct dpsw_link_state state; @@ -693,10 +693,10 @@ static int dpaa2_switch_port_open(struct net_device *netdev) } /* sync carrier state */ - err = dpaa2_switch_port_carrier_state_sync(netdev); + err = dpaa2_switch_port_link_state_update(netdev); if (err) { netdev_err(netdev, - "dpaa2_switch_port_carrier_state_sync err %d\n", err); + "dpaa2_switch_port_link_state_update err %d\n", err); goto err_carrier_sync; } @@ -1419,22 +1419,13 @@ bool dpaa2_switch_port_dev_check(const struct net_device *netdev) return netdev->netdev_ops == &dpaa2_switch_port_ops; } -static void dpaa2_switch_links_state_update(struct ethsw_core *ethsw) -{ - int i; - - for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { - dpaa2_switch_port_carrier_state_sync(ethsw->ports[i]->netdev); - dpaa2_switch_port_set_mac_addr(ethsw->ports[i]); - } -} - static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) { struct device *dev = (struct device *)arg; struct ethsw_core *ethsw = dev_get_drvdata(dev); + struct ethsw_port_priv *port_priv; u32 status = ~0; - int err; + int err, if_id; err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, DPSW_IRQ_INDEX_IF, &status); @@ -1443,9 +1434,13 @@ static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) goto out; } - if (status & DPSW_IRQ_EVENT_LINK_CHANGED) - dpaa2_switch_links_state_update(ethsw); + if_id = (status & 0xFFFF0000) >> 16; + port_priv = ethsw->ports[if_id]; + if (status & DPSW_IRQ_EVENT_LINK_CHANGED) { + dpaa2_switch_port_link_state_update(port_priv->netdev); + dpaa2_switch_port_set_mac_addr(port_priv); + } out: err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, DPSW_IRQ_INDEX_IF, status); -- 2.7.4