lantiq: drop kernel 5.4 support

[openwrt/openwrt.git] / target / linux / lantiq / patches-5.4 / 0710-net-lantiq-configure-burst-length-for-ethernet.patch

diff --git a/target/linux/lantiq/patches-5.4/0710-net-lantiq-configure-burst-length-for-ethernet.patch b/target/linux/lantiq/patches-5.4/0710-net-lantiq-configure-burst-length-for-ethernet.patch
deleted file mode 100644 (file)
index 746a09c..0000000
--- a/target/linux/lantiq/patches-5.4/0710-net-lantiq-configure-burst-length-for-ethernet.patch
+++ /dev/null
@@ -1,124 +0,0 @@
-From ec1a17a11aced3cd756e59d91ad6f50b7a2fabfb Mon Sep 17 00:00:00 2001
-From: Aleksander Jan Bajkowski <olek2@wp.pl>
-Date: Sun, 16 May 2021 15:52:06 +0200
-Subject: [PATCH 5/5] net: lantiq: configure burst length for ethernet
-
-Configure the burst length for Ethernet. 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>
----
- 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, priv->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);
-@@ -930,6 +933,18 @@ 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
-@@ -71,6 +71,9 @@ struct xrx200_priv {
-       struct net_device *net_dev;
-       struct device *dev;
- 
-+      int tx_burst_len;
-+      int rx_burst_len;
-+
-       __iomem void *pmac_reg;
- };
- 
-@@ -315,8 +318,8 @@ static int xrx200_start_xmit(struct sk_b
-       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 */
-@@ -368,7 +371,7 @@ 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, priv->rx_burst_len);
- 
-       ch_rx->dma.nr = XRX200_DMA_RX;
-       ch_rx->dma.dev = priv->dev;
-@@ -486,6 +489,18 @@ 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)