diff options
Diffstat (limited to 'target/linux/lantiq/patches-5.10/0710-v5.16-net-lantiq-configure-the-burst-length-in-ethernet-dr.patch')
| -rw-r--r-- | target/linux/lantiq/patches-5.10/0710-v5.16-net-lantiq-configure-the-burst-length-in-ethernet-dr.patch | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/target/linux/lantiq/patches-5.10/0710-v5.16-net-lantiq-configure-the-burst-length-in-ethernet-dr.patch b/target/linux/lantiq/patches-5.10/0710-v5.16-net-lantiq-configure-the-burst-length-in-ethernet-dr.patch deleted file mode 100644 index 4fb7d0767b..0000000000 --- a/target/linux/lantiq/patches-5.10/0710-v5.16-net-lantiq-configure-the-burst-length-in-ethernet-dr.patch +++ /dev/null @@ -1,126 +0,0 @@ -From 14d4e308e0aa0b78dc7a059716861a4380de3535 Mon Sep 17 00:00:00 2001 -From: Aleksander Jan Bajkowski <olek2@wp.pl> -Date: Tue, 14 Sep 2021 23:21:02 +0200 -Subject: [PATCH 5/5] net: lantiq: configure the burst length in ethernet - drivers - -Configure the burst length in Ethernet drivers. This improves -Ethernet performance by 58%. According to the vendor BSP, -8W burst length is supported by ar9 and newer SoCs. - -The NAT benchmark results on xRX200 (Down/Up): -* 2W: 330 Mb/s -* 4W: 432 Mb/s 372 Mb/s -* 8W: 520 Mb/s 389 Mb/s - -Tested on xRX200 and xRX330. - -Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/lantiq_etop.c | 21 ++++++++++++++++++--- - drivers/net/ethernet/lantiq_xrx200.c | 21 ++++++++++++++++++--- - 2 files changed, 36 insertions(+), 6 deletions(-) - ---- a/drivers/net/ethernet/lantiq_etop.c -+++ b/drivers/net/ethernet/lantiq_etop.c -@@ -148,6 +148,9 @@ struct ltq_etop_priv { - struct ltq_etop_chan txch; - struct ltq_etop_chan rxch; - -+ int tx_burst_len; -+ int rx_burst_len; -+ - int tx_irq; - int rx_irq; - -@@ -399,7 +402,7 @@ ltq_etop_dma_init(struct net_device *dev - int rx = priv->rx_irq - LTQ_DMA_ETOP; - int err; - -- ltq_dma_init_port(DMA_PORT_ETOP); -+ ltq_dma_init_port(DMA_PORT_ETOP, priv->tx_burst_len, rx_burst_len); - - priv->txch.dma.nr = tx; - priv->txch.dma.dev = &priv->pdev->dev; -@@ -676,8 +679,8 @@ ltq_etop_tx(struct sk_buff *skb, struct - return NETDEV_TX_BUSY; - } - -- /* dma needs to start on a 16 byte aligned address */ -- byte_offset = CPHYSADDR(skb->data) % 16; -+ /* dma needs to start on a burst length value aligned address */ -+ byte_offset = CPHYSADDR(skb->data) % (priv->tx_burst_len * 4); - priv->txch.skb[priv->txch.dma.desc] = skb; - - netif_trans_update(dev); -@@ -925,6 +928,18 @@ static int ltq_etop_probe(struct platfor - spin_lock_init(&priv->lock); - SET_NETDEV_DEV(dev, &pdev->dev); - -+ err = device_property_read_u32(&pdev->dev, "lantiq,tx-burst-length", &priv->tx_burst_len); -+ if (err < 0) { -+ dev_err(&pdev->dev, "unable to read tx-burst-length property\n"); -+ return err; -+ } -+ -+ err = device_property_read_u32(&pdev->dev, "lantiq,rx-burst-length", &priv->rx_burst_len); -+ if (err < 0) { -+ dev_err(&pdev->dev, "unable to read rx-burst-length property\n"); -+ return err; -+ } -+ - netif_napi_add(dev, &priv->txch.napi, ltq_etop_poll_tx, 8); - netif_napi_add(dev, &priv->rxch.napi, ltq_etop_poll_rx, 32); - priv->txch.netdev = dev; ---- a/drivers/net/ethernet/lantiq_xrx200.c -+++ b/drivers/net/ethernet/lantiq_xrx200.c -@@ -81,6 +81,9 @@ struct xrx200_priv { - struct net_device *net_dev; - struct device *dev; - -+ int tx_burst_len; -+ int rx_burst_len; -+ - __iomem void *pmac_reg; - }; - -@@ -363,8 +366,8 @@ static netdev_tx_t xrx200_start_xmit(str - if (unlikely(dma_mapping_error(priv->dev, mapping))) - goto err_drop; - -- /* dma needs to start on a 16 byte aligned address */ -- byte_offset = mapping % 16; -+ /* dma needs to start on a burst length value aligned address */ -+ byte_offset = mapping % (priv->tx_burst_len * 4); - - desc->addr = mapping - byte_offset; - /* Make sure the address is written before we give it to HW */ -@@ -465,7 +468,7 @@ static int xrx200_dma_init(struct xrx200 - int ret = 0; - int i; - -- ltq_dma_init_port(DMA_PORT_ETOP); -+ ltq_dma_init_port(DMA_PORT_ETOP, priv->tx_burst_len, rx_burst_len); - - ch_rx->dma.nr = XRX200_DMA_RX; - ch_rx->dma.dev = priv->dev; -@@ -584,6 +587,18 @@ static int xrx200_probe(struct platform_ - if (err) - eth_hw_addr_random(net_dev); - -+ err = device_property_read_u32(dev, "lantiq,tx-burst-length", &priv->tx_burst_len); -+ if (err < 0) { -+ dev_err(dev, "unable to read tx-burst-length property\n"); -+ return err; -+ } -+ -+ err = device_property_read_u32(dev, "lantiq,rx-burst-length", &priv->rx_burst_len); -+ if (err < 0) { -+ dev_err(dev, "unable to read rx-burst-length property\n"); -+ return err; -+ } -+ - /* bring up the dma engine and IP core */ - err = xrx200_dma_init(priv); - if (err) |