[PATCH v2 net-next 11/11] net: stmmac: stmmac interrupt treatment prepared for multiple queues
From: Joao Pinto <hidden>
Date: 2017-03-14 10:25:05
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
This patch prepares the main ISR for multiple queues. Signed-off-by: Joao Pinto <redacted> --- changes v1->v2: - Just to keep up the patch-set version drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 28 ++++++++++++++++------- 1 file changed, 20 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index fccd3f7..33de7c4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -3115,6 +3115,12 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id) { struct net_device *dev = (struct net_device *)dev_id; struct stmmac_priv *priv = netdev_priv(dev); + u32 rx_cnt = priv->plat->rx_queues_to_use; + u32 tx_cnt = priv->plat->tx_queues_to_use; + u32 queues_count; + u32 queue; + + queues_count = (rx_cnt > tx_cnt) ? rx_cnt : tx_cnt; if (priv->irq_wake) pm_wakeup_event(priv->device, 0);
@@ -3129,20 +3135,26 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id) int status = priv->hw->mac->host_irq_status(priv->hw, &priv->xstats); - if (priv->synopsys_id >= DWMAC_CORE_4_00) - status |= priv->hw->mac->host_mtl_irq_status(priv->hw, - STMMAC_CHAN0); - if (unlikely(status)) { /* For LPI we need to save the tx status */ if (status & CORE_IRQ_TX_PATH_IN_LPI_MODE) priv->tx_path_in_lpi_mode = true; if (status & CORE_IRQ_TX_PATH_EXIT_LPI_MODE) priv->tx_path_in_lpi_mode = false; - if (status & CORE_IRQ_MTL_RX_OVERFLOW && priv->hw->dma->set_rx_tail_ptr) - priv->hw->dma->set_rx_tail_ptr(priv->ioaddr, - priv->rx_tail_addr, - STMMAC_CHAN0); + } + + if (priv->synopsys_id >= DWMAC_CORE_4_00) { + for (queue = 0; queue < queues_count; queue++) { + status |= + priv->hw->mac->host_mtl_irq_status(priv->hw, + queue); + + if (status & CORE_IRQ_MTL_RX_OVERFLOW && + priv->hw->dma->set_rx_tail_ptr) + priv->hw->dma->set_rx_tail_ptr(priv->ioaddr, + priv->rx_tail_addr, + queue); + } } /* PCS link status */
--
2.9.3