Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Most notable changes in here:

   1) By far the biggest accomplishment, thanks to a large range of
      contributors, is the addition of multi-send for transmit.  This is
      the result of discussions back in Chicago, and the hard work of
      several individuals.

      Now, when the ->ndo_start_xmit() method of a driver sees
      skb->xmit_more as true, it can choose to defer the doorbell
      telling the driver to start processing the new TX queue entires.

      skb->xmit_more means that the generic networking is guaranteed to
      call the driver immediately with another SKB to send.

      There is logic added to the qdisc layer to dequeue multiple
      packets at a time, and the handling mis-predicted offloads in
      software is now done with no locks held.

      Finally, pktgen is extended to have a "burst" parameter that can
      be used to test a multi-send implementation.

      Several drivers have xmit_more support: i40e, igb, ixgbe, mlx4,
      virtio_net

      Adding support is almost trivial, so export more drivers to
      support this optimization soon.

      I want to thank, in no particular or implied order, Jesper
      Dangaard Brouer, Eric Dumazet, Alexander Duyck, Tom Herbert, Jamal
      Hadi Salim, John Fastabend, Florian Westphal, Daniel Borkmann,
      David Tat, Hannes Frederic Sowa, and Rusty Russell.

   2) PTP and timestamping support in bnx2x, from Michal Kalderon.

   3) Allow adjusting the rx_copybreak threshold for a driver via
      ethtool, and add rx_copybreak support to enic driver.  From
      Govindarajulu Varadarajan.

   4) Significant enhancements to the generic PHY layer and the bcm7xxx
      driver in particular (EEE support, auto power down, etc.) from
      Florian Fainelli.

   5) Allow raw buffers to be used for flow dissection, allowing drivers
      to determine the optimal "linear pull" size for devices that DMA
      into pools of pages.  The objective is to get exactly the
      necessary amount of headers into the linear SKB area pre-pulled,
      but no more.  The new interface drivers use is eth_get_headlen().
      From WANG Cong, with driver conversions (several had their own
      by-hand duplicated implementations) by Alexander Duyck and Eric
      Dumazet.

   6) Support checksumming more smoothly and efficiently for
      encapsulations, and add "foo over UDP" facility.  From Tom
      Herbert.

   7) Add Broadcom SF2 switch driver to DSA layer, from Florian
      Fainelli.

   8) eBPF now can load programs via a system call and has an extensive
      testsuite.  Alexei Starovoitov and Daniel Borkmann.

   9) Major overhaul of the packet scheduler to use RCU in several major
      areas such as the classifiers and rate estimators.  From John
      Fastabend.

  10) Add driver for Intel FM10000 Ethernet Switch, from Alexander
      Duyck.

  11) Rearrange TCP_SKB_CB() to reduce cache line misses, from Eric
      Dumazet.

  12) Add Datacenter TCP congestion control algorithm support, From
      Florian Westphal.

  13) Reorganize sk_buff so that __copy_skb_header() is significantly
      faster.  From Eric Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1558 commits)
  netlabel: directly return netlbl_unlabel_genl_init()
  net: add netdev_txq_bql_{enqueue, complete}_prefetchw() helpers
  net: description of dma_cookie cause make xmldocs warning
  cxgb4: clean up a type issue
  cxgb4: potential shift wrapping bug
  i40e: skb->xmit_more support
  net: fs_enet: Add NAPI TX
  net: fs_enet: Remove non NAPI RX
  r8169:add support for RTL8168EP
  net_sched: copy exts->type in tcf_exts_change()
  wimax: convert printk to pr_foo()
  af_unix: remove 0 assignment on static
  ipv6: Do not warn for informational ICMP messages, regardless of type.
  Update Intel Ethernet Driver maintainers list
  bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING
  tipc: fix bug in multicast congestion handling
  net: better IFF_XMIT_DST_RELEASE support
  net/mlx4_en: remove NETDEV_TX_BUSY
  3c59x: fix bad split of cpu_to_le32(pci_map_single())
  net: bcmgenet: fix Tx ring priority programming
  ...

9 files changed, 157 insertions, 15 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 2d09c116cbc8..b02d4a3ffa37 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -26,6 +26,16 @@ config STMMAC_PLATFORM
 
 	  If unsure, say N.
 
+config DWMAC_MESON
+	bool "Amlogic Meson dwmac support"
+	depends on STMMAC_PLATFORM && ARCH_MESON
+	help
+	  Support for Ethernet controller on Amlogic Meson SoCs.
+
+	  This selects the Amlogic Meson SoC glue layer support for
+	  the stmmac device driver. This driver is used for Meson6 and
+	  Meson8 SoCs.
+
 config DWMAC_SOCFPGA
 	bool "SOCFPGA dwmac support"
 	depends on STMMAC_PLATFORM && MFD_SYSCON && (ARCH_SOCFPGA || COMPILE_TEST)
diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index 18695ebef7e4..0533d0ba783d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -1,6 +1,7 @@
 obj-$(CONFIG_STMMAC_ETH) += stmmac.o
 stmmac-$(CONFIG_STMMAC_PLATFORM) += stmmac_platform.o
 stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o
+stmmac-$(CONFIG_DWMAC_MESON) += dwmac-meson.o
 stmmac-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
 stmmac-$(CONFIG_DWMAC_STI) += dwmac-sti.o
 stmmac-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
new file mode 100644
index 000000000000..d225a603e604
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
@@ -0,0 +1,67 @@
+/*
+ * Amlogic Meson DWMAC glue layer
+ *
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/ethtool.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/stmmac.h>
+
+#define ETHMAC_SPEED_100	BIT(1)
+
+struct meson_dwmac {
+	struct device	*dev;
+	void __iomem	*reg;
+};
+
+static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
+{
+	struct meson_dwmac *dwmac = priv;
+	unsigned int val;
+
+	val = readl(dwmac->reg);
+
+	switch (speed) {
+	case SPEED_10:
+		val &= ~ETHMAC_SPEED_100;
+		break;
+	case SPEED_100:
+		val |= ETHMAC_SPEED_100;
+		break;
+	}
+
+	writel(val, dwmac->reg);
+}
+
+static void *meson6_dwmac_setup(struct platform_device *pdev)
+{
+	struct meson_dwmac *dwmac;
+	struct resource *res;
+
+	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+	if (!dwmac)
+		return ERR_PTR(-ENOMEM);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	dwmac->reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dwmac->reg))
+		return dwmac->reg;
+
+	return dwmac;
+}
+
+const struct stmmac_of_data meson6_dwmac_data = {
+	.setup		= meson6_dwmac_setup,
+	.fix_mac_speed	= meson6_dwmac_fix_mac_speed,
+};
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index ec632e666c56..3aad413e74b4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -17,6 +17,7 @@
 
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/of_net.h>
 #include <linux/phy.h>
 #include <linux/regmap.h>
@@ -30,6 +31,12 @@
 #define SYSMGR_EMACGRP_CTRL_PHYSEL_WIDTH 2
 #define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK 0x00000003
 
+#define EMAC_SPLITTER_CTRL_REG			0x0
+#define EMAC_SPLITTER_CTRL_SPEED_MASK		0x3
+#define EMAC_SPLITTER_CTRL_SPEED_10		0x2
+#define EMAC_SPLITTER_CTRL_SPEED_100		0x3
+#define EMAC_SPLITTER_CTRL_SPEED_1000		0x0
+
 struct socfpga_dwmac {
 	int	interface;
 	u32	reg_offset;
@@ -37,14 +44,46 @@ struct socfpga_dwmac {
 	struct	device *dev;
 	struct regmap *sys_mgr_base_addr;
 	struct reset_control *stmmac_rst;
+	void __iomem *splitter_base;
 };
 
+static void socfpga_dwmac_fix_mac_speed(void *priv, unsigned int speed)
+{
+	struct socfpga_dwmac *dwmac = (struct socfpga_dwmac *)priv;
+	void __iomem *splitter_base = dwmac->splitter_base;
+	u32 val;
+
+	if (!splitter_base)
+		return;
+
+	val = readl(splitter_base + EMAC_SPLITTER_CTRL_REG);
+	val &= ~EMAC_SPLITTER_CTRL_SPEED_MASK;
+
+	switch (speed) {
+	case 1000:
+		val |= EMAC_SPLITTER_CTRL_SPEED_1000;
+		break;
+	case 100:
+		val |= EMAC_SPLITTER_CTRL_SPEED_100;
+		break;
+	case 10:
+		val |= EMAC_SPLITTER_CTRL_SPEED_10;
+		break;
+	default:
+		return;
+	}
+
+	writel(val, splitter_base + EMAC_SPLITTER_CTRL_REG);
+}
+
 static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *dev)
 {
 	struct device_node *np = dev->of_node;
 	struct regmap *sys_mgr_base_addr;
 	u32 reg_offset, reg_shift;
 	int ret;
+	struct device_node *np_splitter;
+	struct resource res_splitter;
 
 	dwmac->stmmac_rst = devm_reset_control_get(dev,
 						  STMMAC_RESOURCE_NAME);
@@ -73,6 +112,20 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *
 		return -EINVAL;
 	}
 
+	np_splitter = of_parse_phandle(np, "altr,emac-splitter", 0);
+	if (np_splitter) {
+		if (of_address_to_resource(np_splitter, 0, &res_splitter)) {
+			dev_info(dev, "Missing emac splitter address\n");
+			return -EINVAL;
+		}
+
+		dwmac->splitter_base = devm_ioremap_resource(dev, &res_splitter);
+		if (IS_ERR(dwmac->splitter_base)) {
+			dev_info(dev, "Failed to mapping emac splitter\n");
+			return PTR_ERR(dwmac->splitter_base);
+		}
+	}
+
 	dwmac->reg_offset = reg_offset;
 	dwmac->reg_shift = reg_shift;
 	dwmac->sys_mgr_base_addr = sys_mgr_base_addr;
@@ -91,6 +144,7 @@ static int socfpga_dwmac_setup(struct socfpga_dwmac *dwmac)
 
 	switch (phymode) {
 	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
 		val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII;
 		break;
 	case PHY_INTERFACE_MODE_MII:
@@ -102,6 +156,13 @@ static int socfpga_dwmac_setup(struct socfpga_dwmac *dwmac)
 		return -EINVAL;
 	}
 
+	/* Overwrite val to GMII if splitter core is enabled. The phymode here
+	 * is the actual phy mode on phy hardware, but phy interface from
+	 * EMAC core is GMII.
+	 */
+	if (dwmac->splitter_base)
+		val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
+
 	regmap_read(sys_mgr_base_addr, reg_offset, &ctrl);
 	ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << reg_shift);
 	ctrl |= val << reg_shift;
@@ -196,4 +257,5 @@ const struct stmmac_of_data socfpga_gmac_data = {
 	.setup = socfpga_dwmac_probe,
 	.init = socfpga_dwmac_init,
 	.exit = socfpga_dwmac_exit,
+	.fix_mac_speed = socfpga_dwmac_fix_mac_speed,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 58097c0e2ad5..44528896355d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -137,6 +137,9 @@ void stmmac_disable_eee_mode(struct stmmac_priv *priv);
 bool stmmac_eee_init(struct stmmac_priv *priv);
 
 #ifdef CONFIG_STMMAC_PLATFORM
+#ifdef CONFIG_DWMAC_MESON
+extern const struct stmmac_of_data meson6_dwmac_data;
+#endif
 #ifdef CONFIG_DWMAC_SUNXI
 extern const struct stmmac_of_data sun7i_gmac_data;
 #endif
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index cf4f38db1c0a..3a08a1f78c73 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -261,11 +261,11 @@ static int stmmac_ethtool_getsettings(struct net_device *dev,
 		ethtool_cmd_speed_set(cmd, priv->xstats.pcs_speed);
 
 		/* Get and convert ADV/LP_ADV from the HW AN registers */
-		if (priv->hw->mac->get_adv)
-			priv->hw->mac->get_adv(priv->hw, &adv);
-		else
+		if (!priv->hw->mac->get_adv)
 			return -EOPNOTSUPP;	/* should never happen indeed */
 
+		priv->hw->mac->get_adv(priv->hw, &adv);
+
 		/* Encoding of PSE bits is defined in 802.3z, 37.2.1.4 */
 
 		if (adv.pause & STMMAC_PCS_PAUSE)
@@ -340,19 +340,17 @@ static int stmmac_ethtool_setsettings(struct net_device *dev,
 		if (cmd->autoneg != AUTONEG_ENABLE)
 			return -EINVAL;
 
-		if (cmd->autoneg == AUTONEG_ENABLE) {
-			mask &= (ADVERTISED_1000baseT_Half |
+		mask &= (ADVERTISED_1000baseT_Half |
 			ADVERTISED_1000baseT_Full |
 			ADVERTISED_100baseT_Half |
 			ADVERTISED_100baseT_Full |
 			ADVERTISED_10baseT_Half |
 			ADVERTISED_10baseT_Full);
 
-			spin_lock(&priv->lock);
-			if (priv->hw->mac->ctrl_ane)
-				priv->hw->mac->ctrl_ane(priv->hw, 1);
-			spin_unlock(&priv->lock);
-		}
+		spin_lock(&priv->lock);
+		if (priv->hw->mac->ctrl_ane)
+			priv->hw->mac->ctrl_ane(priv->hw, 1);
+		spin_unlock(&priv->lock);
 
 		return 0;
 	}
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index b0c1521e08a3..6f77a46c7e2c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -834,7 +834,7 @@ static int stmmac_init_phy(struct net_device *dev)
 	/* Stop Advertising 1000BASE Capability if interface is not GMII */
 	if ((interface == PHY_INTERFACE_MODE_MII) ||
 	    (interface == PHY_INTERFACE_MODE_RMII) ||
-		(max_speed < 1000 &&  max_speed > 0))
+		(max_speed < 1000 && max_speed > 0))
 		phydev->advertising &= ~(SUPPORTED_1000baseT_Half |
 					 SUPPORTED_1000baseT_Full);
 
@@ -2765,8 +2765,6 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device,
 	priv->device = device;
 	priv->dev = ndev;
 
-	ether_setup(ndev);
-
 	stmmac_set_ethtool_ops(ndev);
 	priv->pause = pause;
 	priv->plat = plat_dat;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index a5b1e1b776fe..b735fa22ac95 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -253,7 +253,7 @@ int stmmac_mdio_register(struct net_device *ndev)
 			}
 
 			/*
-			 * If we're  going to bind the MAC to this PHY bus,
+			 * If we're going to bind the MAC to this PHY bus,
 			 * and no PHY number was provided to the MAC,
 			 * use the one probed here.
 			 */
@@ -282,7 +282,7 @@ int stmmac_mdio_register(struct net_device *ndev)
 	}
 
 	if (!found) {
-		pr_warning("%s: No PHY found\n", ndev->name);
+		pr_warn("%s: No PHY found\n", ndev->name);
 		mdiobus_unregister(new_bus);
 		mdiobus_free(new_bus);
 		return -ENODEV;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index bb524a932be4..652171706258 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -30,6 +30,9 @@
 #include "stmmac.h"
 
 static const struct of_device_id stmmac_dt_ids[] = {
+#ifdef CONFIG_DWMAC_MESON
+	{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
+#endif
 #ifdef CONFIG_DWMAC_SUNXI
 	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
 #endif