lantiq: add 3.18 support

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 44348

1 files changed, 908 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-3.18/0028-NET-lantiq-various-etop-fixes.patch b/target/linux/lantiq/patches-3.18/0028-NET-lantiq-various-etop-fixes.patch
new file mode 100644
index 0000000000..187e301ed2
--- /dev/null
+++ b/target/linux/lantiq/patches-3.18/0028-NET-lantiq-various-etop-fixes.patch
@@ -0,0 +1,908 @@
+From 870ed9cae083ff8a60a739ef7e74c5a1800533be Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Tue, 9 Sep 2014 22:45:34 +0200
+Subject: [PATCH 28/36] NET: lantiq: various etop fixes
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/net/ethernet/lantiq_etop.c |  555 +++++++++++++++++++++++++-----------
+ 1 file changed, 389 insertions(+), 166 deletions(-)
+
+--- a/drivers/net/ethernet/lantiq_etop.c
++++ b/drivers/net/ethernet/lantiq_etop.c
+@@ -11,7 +11,7 @@
+  *   You should have received a copy of the GNU General Public License
+  *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+  *
+- *   Copyright (C) 2011 John Crispin <blogic@openwrt.org>
++ *   Copyright (C) 2011-12 John Crispin <blogic@openwrt.org>
+  */
+ 
+ #include <linux/kernel.h>
+@@ -30,11 +30,16 @@
+ #include <linux/mm.h>
+ #include <linux/platform_device.h>
+ #include <linux/ethtool.h>
++#include <linux/if_vlan.h>
+ #include <linux/init.h>
+ #include <linux/delay.h>
+ #include <linux/io.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/module.h>
++#include <linux/clk.h>
++#include <linux/of_net.h>
++#include <linux/of_irq.h>
++#include <linux/of_platform.h>
+ 
+ #include <asm/checksum.h>
+ 
+@@ -42,7 +47,7 @@
+ #include <xway_dma.h>
+ #include <lantiq_platform.h>
+ 
+-#define LTQ_ETOP_MDIO		0x11804
++#define LTQ_ETOP_MDIO_ACC	0x11804
+ #define MDIO_REQUEST		0x80000000
+ #define MDIO_READ		0x40000000
+ #define MDIO_ADDR_MASK		0x1f
+@@ -51,44 +56,91 @@
+ #define MDIO_REG_OFFSET		0x10
+ #define MDIO_VAL_MASK		0xffff
+ 
+-#define PPE32_CGEN		0x800
+-#define LQ_PPE32_ENET_MAC_CFG	0x1840
++#define LTQ_ETOP_MDIO_CFG       0x11800
++#define MDIO_CFG_MASK           0x6
++
++#define LTQ_ETOP_CFG            0x11808
++#define LTQ_ETOP_IGPLEN         0x11820
++#define LTQ_ETOP_MAC_CFG	0x11840
+ 
+ #define LTQ_ETOP_ENETS0		0x11850
+ #define LTQ_ETOP_MAC_DA0	0x1186C
+ #define LTQ_ETOP_MAC_DA1	0x11870
+-#define LTQ_ETOP_CFG		0x16020
+-#define LTQ_ETOP_IGPLEN		0x16080
++
++#define MAC_CFG_MASK		0xfff
++#define MAC_CFG_CGEN		(1 << 11)
++#define MAC_CFG_DUPLEX		(1 << 2)
++#define MAC_CFG_SPEED		(1 << 1)
++#define MAC_CFG_LINK		(1 << 0)
+ 
+ #define MAX_DMA_CHAN		0x8
+ #define MAX_DMA_CRC_LEN		0x4
+ #define MAX_DMA_DATA_LEN	0x600
+ 
+ #define ETOP_FTCU		BIT(28)
+-#define ETOP_MII_MASK		0xf
+-#define ETOP_MII_NORMAL		0xd
+-#define ETOP_MII_REVERSE	0xe
+ #define ETOP_PLEN_UNDER		0x40
+-#define ETOP_CGEN		0x800
++#define ETOP_CFG_MII0		0x01
+ 
+-/* use 2 static channels for TX/RX */
+-#define LTQ_ETOP_TX_CHANNEL	1
+-#define LTQ_ETOP_RX_CHANNEL	6
+-#define IS_TX(x)		(x == LTQ_ETOP_TX_CHANNEL)
+-#define IS_RX(x)		(x == LTQ_ETOP_RX_CHANNEL)
++#define ETOP_CFG_MASK           0xfff
++#define ETOP_CFG_FEN0		(1 << 8)
++#define ETOP_CFG_SEN0		(1 << 6)
++#define ETOP_CFG_OFF1		(1 << 3)
++#define ETOP_CFG_REMII0		(1 << 1)
++#define ETOP_CFG_OFF0		(1 << 0)
++
++#define LTQ_GBIT_MDIO_CTL	0xCC
++#define LTQ_GBIT_MDIO_DATA	0xd0
++#define LTQ_GBIT_GCTL0		0x68
++#define LTQ_GBIT_PMAC_HD_CTL	0x8c
++#define LTQ_GBIT_P0_CTL		0x4
++#define LTQ_GBIT_PMAC_RX_IPG	0xa8
++#define LTQ_GBIT_RGMII_CTL	0x78
++
++#define PMAC_HD_CTL_AS		(1 << 19)
++#define PMAC_HD_CTL_RXSH	(1 << 22)
++
++/* Switch Enable (0=disable, 1=enable) */
++#define GCTL0_SE		0x80000000
++/* Disable MDIO auto polling (0=disable, 1=enable) */
++#define PX_CTL_DMDIO		0x00400000
++
++/* MDC clock divider, clock = 25MHz/((MDC_CLOCK + 1) * 2) */
++#define MDC_CLOCK_MASK		0xff000000
++#define MDC_CLOCK_OFFSET	24
++
++/* register information for the gbit's MDIO bus */
++#define MDIO_XR9_REQUEST	0x00008000
++#define MDIO_XR9_READ		0x00000800
++#define MDIO_XR9_WRITE		0x00000400
++#define MDIO_XR9_REG_MASK	0x1f
++#define MDIO_XR9_ADDR_MASK	0x1f
++#define MDIO_XR9_RD_MASK	0xffff
++#define MDIO_XR9_REG_OFFSET	0
++#define MDIO_XR9_ADDR_OFFSET	5
++#define MDIO_XR9_WR_OFFSET	16
+ 
++#define LTQ_DMA_ETOP	((of_machine_is_compatible("lantiq,ase")) ? \
++			(INT_NUM_IM3_IRL0) : (INT_NUM_IM2_IRL0))
++
++/* the newer xway socks have a embedded 3/7 port gbit multiplexer */
+ #define ltq_etop_r32(x)		ltq_r32(ltq_etop_membase + (x))
+ #define ltq_etop_w32(x, y)	ltq_w32(x, ltq_etop_membase + (y))
+ #define ltq_etop_w32_mask(x, y, z)	\
+ 		ltq_w32_mask(x, y, ltq_etop_membase + (z))
+ 
+-#define DRV_VERSION	"1.0"
++#define ltq_gbit_r32(x)		ltq_r32(ltq_gbit_membase + (x))
++#define ltq_gbit_w32(x, y)	ltq_w32(x, ltq_gbit_membase + (y))
++#define ltq_gbit_w32_mask(x, y, z)	\
++		ltq_w32_mask(x, y, ltq_gbit_membase + (z))
++
++#define DRV_VERSION	"1.2"
+ 
+ static void __iomem *ltq_etop_membase;
++static void __iomem *ltq_gbit_membase;
+ 
+ struct ltq_etop_chan {
+-	int idx;
+ 	int tx_free;
++	int irq;
+ 	struct net_device *netdev;
+ 	struct napi_struct napi;
+ 	struct ltq_dma_channel dma;
+@@ -98,22 +150,35 @@ struct ltq_etop_chan {
+ struct ltq_etop_priv {
+ 	struct net_device *netdev;
+ 	struct platform_device *pdev;
+-	struct ltq_eth_data *pldata;
+ 	struct resource *res;
+ 
+ 	struct mii_bus *mii_bus;
+ 	struct phy_device *phydev;
+ 
+-	struct ltq_etop_chan ch[MAX_DMA_CHAN];
+-	int tx_free[MAX_DMA_CHAN >> 1];
++	struct ltq_etop_chan txch;
++	struct ltq_etop_chan rxch;
++
++	int tx_irq;
++	int rx_irq;
++
++	const void *mac;
++	int mii_mode;
+ 
+ 	spinlock_t lock;
++
++	struct clk *clk_ppe;
++	struct clk *clk_switch;
++	struct clk *clk_ephy;
++	struct clk *clk_ephycgu;
+ };
+ 
++static int ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr,
++				int phy_reg, u16 phy_data);
++
+ static int
+ ltq_etop_alloc_skb(struct ltq_etop_chan *ch)
+ {
+-	ch->skb[ch->dma.desc] = netdev_alloc_skb(ch->netdev, MAX_DMA_DATA_LEN);
++	ch->skb[ch->dma.desc] = dev_alloc_skb(MAX_DMA_DATA_LEN);
+ 	if (!ch->skb[ch->dma.desc])
+ 		return -ENOMEM;
+ 	ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(NULL,
+@@ -148,8 +213,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
+ 	spin_unlock_irqrestore(&priv->lock, flags);
+ 
+ 	skb_put(skb, len);
++	skb->dev = ch->netdev;
+ 	skb->protocol = eth_type_trans(skb, ch->netdev);
+ 	netif_receive_skb(skb);
++	ch->netdev->stats.rx_packets++;
++	ch->netdev->stats.rx_bytes += len;
+ }
+ 
+ static int
+@@ -157,8 +225,10 @@ ltq_etop_poll_rx(struct napi_struct *nap
+ {
+ 	struct ltq_etop_chan *ch = container_of(napi,
+ 				struct ltq_etop_chan, napi);
++	struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
+ 	int rx = 0;
+ 	int complete = 0;
++	unsigned long flags;
+ 
+ 	while ((rx < budget) && !complete) {
+ 		struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
+@@ -172,7 +242,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
+ 	}
+ 	if (complete || !rx) {
+ 		napi_complete(&ch->napi);
++		spin_lock_irqsave(&priv->lock, flags);
+ 		ltq_dma_ack_irq(&ch->dma);
++		spin_unlock_irqrestore(&priv->lock, flags);
+ 	}
+ 	return rx;
+ }
+@@ -184,12 +256,14 @@ ltq_etop_poll_tx(struct napi_struct *nap
+ 		container_of(napi, struct ltq_etop_chan, napi);
+ 	struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
+ 	struct netdev_queue *txq =
+-		netdev_get_tx_queue(ch->netdev, ch->idx >> 1);
++		netdev_get_tx_queue(ch->netdev, ch->dma.nr >> 1);
+ 	unsigned long flags;
+ 
+ 	spin_lock_irqsave(&priv->lock, flags);
+ 	while ((ch->dma.desc_base[ch->tx_free].ctl &
+ 			(LTQ_DMA_OWN | LTQ_DMA_C)) == LTQ_DMA_C) {
++		ch->netdev->stats.tx_packets++;
++		ch->netdev->stats.tx_bytes += ch->skb[ch->tx_free]->len;
+ 		dev_kfree_skb_any(ch->skb[ch->tx_free]);
+ 		ch->skb[ch->tx_free] = NULL;
+ 		memset(&ch->dma.desc_base[ch->tx_free], 0,
+@@ -202,7 +276,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
+ 	if (netif_tx_queue_stopped(txq))
+ 		netif_tx_start_queue(txq);
+ 	napi_complete(&ch->napi);
++	spin_lock_irqsave(&priv->lock, flags);
+ 	ltq_dma_ack_irq(&ch->dma);
++	spin_unlock_irqrestore(&priv->lock, flags);
+ 	return 1;
+ }
+ 
+@@ -210,9 +286,10 @@ static irqreturn_t
+ ltq_etop_dma_irq(int irq, void *_priv)
+ {
+ 	struct ltq_etop_priv *priv = _priv;
+-	int ch = irq - LTQ_DMA_CH0_INT;
+-
+-	napi_schedule(&priv->ch[ch].napi);
++	if (irq == priv->txch.dma.irq)
++		napi_schedule(&priv->txch.napi);
++	else
++		napi_schedule(&priv->rxch.napi);
+ 	return IRQ_HANDLED;
+ }
+ 
+@@ -224,7 +301,7 @@ ltq_etop_free_channel(struct net_device
+ 	ltq_dma_free(&ch->dma);
+ 	if (ch->dma.irq)
+ 		free_irq(ch->dma.irq, priv);
+-	if (IS_RX(ch->idx)) {
++	if (ch == &priv->txch) {
+ 		int desc;
+ 		for (desc = 0; desc < LTQ_DESC_NUM; desc++)
+ 			dev_kfree_skb_any(ch->skb[ch->dma.desc]);
+@@ -235,65 +312,133 @@ static void
+ ltq_etop_hw_exit(struct net_device *dev)
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+-	int i;
+ 
+-	ltq_pmu_disable(PMU_PPE);
+-	for (i = 0; i < MAX_DMA_CHAN; i++)
+-		if (IS_TX(i) || IS_RX(i))
+-			ltq_etop_free_channel(dev, &priv->ch[i]);
++	clk_disable(priv->clk_ppe);
++
++	if (of_machine_is_compatible("lantiq,ar9"))
++		clk_disable(priv->clk_switch);
++
++	if (of_machine_is_compatible("lantiq,ase")) {
++		clk_disable(priv->clk_ephy);
++		clk_disable(priv->clk_ephycgu);
++	}
++
++	ltq_etop_free_channel(dev, &priv->txch);
++	ltq_etop_free_channel(dev, &priv->rxch);
++}
++
++static void
++ltq_etop_gbit_init(struct net_device *dev)
++{
++	struct ltq_etop_priv *priv = netdev_priv(dev);
++
++	clk_enable(priv->clk_switch);
++
++	/* enable gbit port0 on the SoC */
++	ltq_gbit_w32_mask((1 << 17), (1 << 18), LTQ_GBIT_P0_CTL);
++
++	ltq_gbit_w32_mask(0, GCTL0_SE, LTQ_GBIT_GCTL0);
++	/* disable MDIO auto polling mode */
++	ltq_gbit_w32_mask(0, PX_CTL_DMDIO, LTQ_GBIT_P0_CTL);
++	/* set 1522 packet size */
++	ltq_gbit_w32_mask(0x300, 0, LTQ_GBIT_GCTL0);
++	/* disable pmac & dmac headers */
++	ltq_gbit_w32_mask(PMAC_HD_CTL_AS | PMAC_HD_CTL_RXSH, 0,
++		LTQ_GBIT_PMAC_HD_CTL);
++	/* Due to traffic halt when burst length 8,
++		replace default IPG value with 0x3B */
++	ltq_gbit_w32(0x3B, LTQ_GBIT_PMAC_RX_IPG);
++	/* set mdc clock to 2.5 MHz */
++	ltq_gbit_w32_mask(MDC_CLOCK_MASK, 4 << MDC_CLOCK_OFFSET,
++		LTQ_GBIT_RGMII_CTL);
+ }
+ 
+ static int
+ ltq_etop_hw_init(struct net_device *dev)
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+-	int i;
++	int mii_mode = priv->mii_mode;
+ 
+-	ltq_pmu_enable(PMU_PPE);
++	clk_enable(priv->clk_ppe);
++
++	if (of_machine_is_compatible("lantiq,ar9")) {
++		ltq_etop_gbit_init(dev);
++		/* force the etops link to the gbit to MII */
++		mii_mode = PHY_INTERFACE_MODE_MII;
++	}
++	ltq_etop_w32_mask(MDIO_CFG_MASK, 0, LTQ_ETOP_MDIO_CFG);
++	ltq_etop_w32_mask(MAC_CFG_MASK, MAC_CFG_CGEN | MAC_CFG_DUPLEX |
++			MAC_CFG_SPEED | MAC_CFG_LINK, LTQ_ETOP_MAC_CFG);
+ 
+-	switch (priv->pldata->mii_mode) {
++	switch (mii_mode) {
+ 	case PHY_INTERFACE_MODE_RMII:
+-		ltq_etop_w32_mask(ETOP_MII_MASK,
+-			ETOP_MII_REVERSE, LTQ_ETOP_CFG);
++		ltq_etop_w32_mask(ETOP_CFG_MASK, ETOP_CFG_REMII0 | ETOP_CFG_OFF1 |
++			ETOP_CFG_SEN0 | ETOP_CFG_FEN0, LTQ_ETOP_CFG);
+ 		break;
+ 
+ 	case PHY_INTERFACE_MODE_MII:
+-		ltq_etop_w32_mask(ETOP_MII_MASK,
+-			ETOP_MII_NORMAL, LTQ_ETOP_CFG);
++		ltq_etop_w32_mask(ETOP_CFG_MASK, ETOP_CFG_OFF1 |
++			ETOP_CFG_SEN0 | ETOP_CFG_FEN0, LTQ_ETOP_CFG);
+ 		break;
+ 
+ 	default:
++		if (of_machine_is_compatible("lantiq,ase")) {
++			clk_enable(priv->clk_ephy);
++			/* disable external MII */
++			ltq_etop_w32_mask(0, ETOP_CFG_MII0, LTQ_ETOP_CFG);
++			/* enable clock for internal PHY */
++			clk_enable(priv->clk_ephycgu);
++			/* we need to write this magic to the internal phy to
++			   make it work */
++			ltq_etop_mdio_wr(NULL, 0x8, 0x12, 0xC020);
++			pr_info("Selected EPHY mode\n");
++			break;
++		}
+ 		netdev_err(dev, "unknown mii mode %d\n",
+-			priv->pldata->mii_mode);
++			mii_mode);
+ 		return -ENOTSUPP;
+ 	}
+ 
+-	/* enable crc generation */
+-	ltq_etop_w32(PPE32_CGEN, LQ_PPE32_ENET_MAC_CFG);
++	return 0;
++}
++
++static int
++ltq_etop_dma_init(struct net_device *dev)
++{
++	struct ltq_etop_priv *priv = netdev_priv(dev);
++	int tx = priv->tx_irq - LTQ_DMA_ETOP;
++	int rx = priv->rx_irq - LTQ_DMA_ETOP;
++	int err;
+ 
+ 	ltq_dma_init_port(DMA_PORT_ETOP);
+ 
+-	for (i = 0; i < MAX_DMA_CHAN; i++) {
+-		int irq = LTQ_DMA_CH0_INT + i;
+-		struct ltq_etop_chan *ch = &priv->ch[i];
+-
+-		ch->idx = ch->dma.nr = i;
+-
+-		if (IS_TX(i)) {
+-			ltq_dma_alloc_tx(&ch->dma);
+-			request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
+-		} else if (IS_RX(i)) {
+-			ltq_dma_alloc_rx(&ch->dma);
+-			for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM;
+-					ch->dma.desc++)
+-				if (ltq_etop_alloc_skb(ch))
+-					return -ENOMEM;
+-			ch->dma.desc = 0;
+-			request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
++	priv->txch.dma.nr = tx;
++	ltq_dma_alloc_tx(&priv->txch.dma);
++	err = request_irq(priv->tx_irq, ltq_etop_dma_irq, 0, "eth_tx", priv);
++	if (err) {
++		netdev_err(dev, "failed to allocate tx irq\n");
++		goto err_out;
++	}
++	priv->txch.dma.irq = priv->tx_irq;
++
++	priv->rxch.dma.nr = rx;
++	ltq_dma_alloc_rx(&priv->rxch.dma);
++	for (priv->rxch.dma.desc = 0; priv->rxch.dma.desc < LTQ_DESC_NUM;
++			priv->rxch.dma.desc++) {
++		if (ltq_etop_alloc_skb(&priv->rxch)) {
++			netdev_err(dev, "failed to allocate skbs\n");
++			err = -ENOMEM;
++			goto err_out;
+ 		}
+-		ch->dma.irq = irq;
+ 	}
+-	return 0;
++	priv->rxch.dma.desc = 0;
++	err = request_irq(priv->rx_irq, ltq_etop_dma_irq, 0, "eth_rx", priv);
++	if (err)
++		netdev_err(dev, "failed to allocate rx irq\n");
++	else
++		priv->rxch.dma.irq = priv->rx_irq;
++err_out:
++	return err;
+ }
+ 
+ static void
+@@ -309,7 +454,10 @@ ltq_etop_get_settings(struct net_device
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+ 
+-	return phy_ethtool_gset(priv->phydev, cmd);
++	if (priv->phydev)
++		return phy_ethtool_gset(priv->phydev, cmd);
++	else
++		return 0;
+ }
+ 
+ static int
+@@ -317,7 +465,10 @@ ltq_etop_set_settings(struct net_device
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+ 
+-	return phy_ethtool_sset(priv->phydev, cmd);
++	if (priv->phydev)
++		return phy_ethtool_sset(priv->phydev, cmd);
++	else
++		return 0;
+ }
+ 
+ static int
+@@ -325,7 +476,10 @@ ltq_etop_nway_reset(struct net_device *d
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+ 
+-	return phy_start_aneg(priv->phydev);
++	if (priv->phydev)
++		return phy_start_aneg(priv->phydev);
++	else
++		return 0;
+ }
+ 
+ static const struct ethtool_ops ltq_etop_ethtool_ops = {
+@@ -336,6 +490,39 @@ static const struct ethtool_ops ltq_etop
+ };
+ 
+ static int
++ltq_etop_mdio_wr_xr9(struct mii_bus *bus, int phy_addr,
++		int phy_reg, u16 phy_data)
++{
++	u32 val = MDIO_XR9_REQUEST | MDIO_XR9_WRITE |
++		(phy_data << MDIO_XR9_WR_OFFSET) |
++		((phy_addr & MDIO_XR9_ADDR_MASK) << MDIO_XR9_ADDR_OFFSET) |
++		((phy_reg & MDIO_XR9_REG_MASK) << MDIO_XR9_REG_OFFSET);
++
++	while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
++		;
++	ltq_gbit_w32(val, LTQ_GBIT_MDIO_CTL);
++	while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
++		;
++	return 0;
++}
++
++static int
++ltq_etop_mdio_rd_xr9(struct mii_bus *bus, int phy_addr, int phy_reg)
++{
++	u32 val = MDIO_XR9_REQUEST | MDIO_XR9_READ |
++		((phy_addr & MDIO_XR9_ADDR_MASK) << MDIO_XR9_ADDR_OFFSET) |
++		((phy_reg & MDIO_XR9_REG_MASK) << MDIO_XR9_REG_OFFSET);
++
++	while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
++		;
++	ltq_gbit_w32(val, LTQ_GBIT_MDIO_CTL);
++	while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
++		;
++	val = ltq_gbit_r32(LTQ_GBIT_MDIO_DATA) & MDIO_XR9_RD_MASK;
++	return val;
++}
++
++static int
+ ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr, int phy_reg, u16 phy_data)
+ {
+ 	u32 val = MDIO_REQUEST |
+@@ -343,9 +530,9 @@ ltq_etop_mdio_wr(struct mii_bus *bus, in
+ 		((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET) |
+ 		phy_data;
+ 
+-	while (ltq_etop_r32(LTQ_ETOP_MDIO) & MDIO_REQUEST)
++	while (ltq_etop_r32(LTQ_ETOP_MDIO_ACC) & MDIO_REQUEST)
+ 		;
+-	ltq_etop_w32(val, LTQ_ETOP_MDIO);
++	ltq_etop_w32(val, LTQ_ETOP_MDIO_ACC);
+ 	return 0;
+ }
+ 
+@@ -356,12 +543,12 @@ ltq_etop_mdio_rd(struct mii_bus *bus, in
+ 		((phy_addr & MDIO_ADDR_MASK) << MDIO_ADDR_OFFSET) |
+ 		((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET);
+ 
+-	while (ltq_etop_r32(LTQ_ETOP_MDIO) & MDIO_REQUEST)
++	while (ltq_etop_r32(LTQ_ETOP_MDIO_ACC) & MDIO_REQUEST)
+ 		;
+-	ltq_etop_w32(val, LTQ_ETOP_MDIO);
+-	while (ltq_etop_r32(LTQ_ETOP_MDIO) & MDIO_REQUEST)
++	ltq_etop_w32(val, LTQ_ETOP_MDIO_ACC);
++	while (ltq_etop_r32(LTQ_ETOP_MDIO_ACC) & MDIO_REQUEST)
+ 		;
+-	val = ltq_etop_r32(LTQ_ETOP_MDIO) & MDIO_VAL_MASK;
++	val = ltq_etop_r32(LTQ_ETOP_MDIO_ACC) & MDIO_VAL_MASK;
+ 	return val;
+ }
+ 
+@@ -376,14 +563,18 @@ ltq_etop_mdio_probe(struct net_device *d
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+ 	struct phy_device *phydev = NULL;
+-	int phy_addr;
++	u32 phy_supported =  (SUPPORTED_10baseT_Half
++			| SUPPORTED_10baseT_Full
++			| SUPPORTED_100baseT_Half
++			| SUPPORTED_100baseT_Full
++			| SUPPORTED_Autoneg
++			| SUPPORTED_MII
++			| SUPPORTED_TP);
+ 
+-	for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
+-		if (priv->mii_bus->phy_map[phy_addr]) {
+-			phydev = priv->mii_bus->phy_map[phy_addr];
+-			break;
+-		}
+-	}
++	if (of_machine_is_compatible("lantiq,ase"))
++		phydev = priv->mii_bus->phy_map[8];
++	else
++		phydev = priv->mii_bus->phy_map[0];
+ 
+ 	if (!phydev) {
+ 		netdev_err(dev, "no PHY found\n");
+@@ -391,21 +582,18 @@ ltq_etop_mdio_probe(struct net_device *d
+ 	}
+ 
+ 	phydev = phy_connect(dev, dev_name(&phydev->dev),
+-			     &ltq_etop_mdio_link, priv->pldata->mii_mode);
++			&ltq_etop_mdio_link, priv->mii_mode);
+ 
+ 	if (IS_ERR(phydev)) {
+ 		netdev_err(dev, "Could not attach to PHY\n");
+ 		return PTR_ERR(phydev);
+ 	}
+ 
+-	phydev->supported &= (SUPPORTED_10baseT_Half
+-			      | SUPPORTED_10baseT_Full
+-			      | SUPPORTED_100baseT_Half
+-			      | SUPPORTED_100baseT_Full
+-			      | SUPPORTED_Autoneg
+-			      | SUPPORTED_MII
+-			      | SUPPORTED_TP);
++	if (of_machine_is_compatible("lantiq,ar9"))
++		phy_supported |= SUPPORTED_1000baseT_Half
++			| SUPPORTED_1000baseT_Full;
+ 
++	phydev->supported &= phy_supported;
+ 	phydev->advertising = phydev->supported;
+ 	priv->phydev = phydev;
+ 	pr_info("%s: attached PHY [%s] (phy_addr=%s, irq=%d)\n",
+@@ -430,8 +618,13 @@ ltq_etop_mdio_init(struct net_device *de
+ 	}
+ 
+ 	priv->mii_bus->priv = dev;
+-	priv->mii_bus->read = ltq_etop_mdio_rd;
+-	priv->mii_bus->write = ltq_etop_mdio_wr;
++	if (of_machine_is_compatible("lantiq,ar9")) {
++		priv->mii_bus->read = ltq_etop_mdio_rd_xr9;
++		priv->mii_bus->write = ltq_etop_mdio_wr_xr9;
++	} else {
++		priv->mii_bus->read = ltq_etop_mdio_rd;
++		priv->mii_bus->write = ltq_etop_mdio_wr;
++	}
+ 	priv->mii_bus->name = "ltq_mii";
+ 	snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ 		priv->pdev->name, priv->pdev->id);
+@@ -480,17 +673,19 @@ static int
+ ltq_etop_open(struct net_device *dev)
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+-	int i;
++	unsigned long flags;
+ 
+-	for (i = 0; i < MAX_DMA_CHAN; i++) {
+-		struct ltq_etop_chan *ch = &priv->ch[i];
++	napi_enable(&priv->txch.napi);
++	napi_enable(&priv->rxch.napi);
++
++	spin_lock_irqsave(&priv->lock, flags);
++	ltq_dma_open(&priv->txch.dma);
++	ltq_dma_open(&priv->rxch.dma);
++	spin_unlock_irqrestore(&priv->lock, flags);
++
++	if (priv->phydev)
++		phy_start(priv->phydev);
+ 
+-		if (!IS_TX(i) && (!IS_RX(i)))
+-			continue;
+-		ltq_dma_open(&ch->dma);
+-		napi_enable(&ch->napi);
+-	}
+-	phy_start(priv->phydev);
+ 	netif_tx_start_all_queues(dev);
+ 	return 0;
+ }
+@@ -499,18 +694,19 @@ static int
+ ltq_etop_stop(struct net_device *dev)
+ {
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+-	int i;
++	unsigned long flags;
+ 
+ 	netif_tx_stop_all_queues(dev);
+-	phy_stop(priv->phydev);
+-	for (i = 0; i < MAX_DMA_CHAN; i++) {
+-		struct ltq_etop_chan *ch = &priv->ch[i];
+-
+-		if (!IS_RX(i) && !IS_TX(i))
+-			continue;
+-		napi_disable(&ch->napi);
+-		ltq_dma_close(&ch->dma);
+-	}
++	if (priv->phydev)
++		phy_stop(priv->phydev);
++	napi_disable(&priv->txch.napi);
++	napi_disable(&priv->rxch.napi);
++
++	spin_lock_irqsave(&priv->lock, flags);
++	ltq_dma_close(&priv->txch.dma);
++	ltq_dma_close(&priv->rxch.dma);
++	spin_unlock_irqrestore(&priv->lock, flags);
++
+ 	return 0;
+ }
+ 
+@@ -520,16 +716,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
+ 	int queue = skb_get_queue_mapping(skb);
+ 	struct netdev_queue *txq = netdev_get_tx_queue(dev, queue);
+ 	struct ltq_etop_priv *priv = netdev_priv(dev);
+-	struct ltq_etop_chan *ch = &priv->ch[(queue << 1) | 1];
+-	struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
+-	int len;
++	struct ltq_dma_desc *desc =
++		&priv->txch.dma.desc_base[priv->txch.dma.desc];
+ 	unsigned long flags;
+ 	u32 byte_offset;
++	int len;
+ 
+ 	len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
+ 
+-	if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) {
+-		dev_kfree_skb_any(skb);
++	if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) ||
++			priv->txch.skb[priv->txch.dma.desc]) {
+ 		netdev_err(dev, "tx ring full\n");
+ 		netif_tx_stop_queue(txq);
+ 		return NETDEV_TX_BUSY;
+@@ -537,7 +733,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
+ 
+ 	/* dma needs to start on a 16 byte aligned address */
+ 	byte_offset = CPHYSADDR(skb->data) % 16;
+-	ch->skb[ch->dma.desc] = skb;
++	priv->txch.skb[priv->txch.dma.desc] = skb;
+ 
+ 	dev->trans_start = jiffies;
+ 
+@@ -547,11 +743,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
+ 	wmb();
+ 	desc->ctl = LTQ_DMA_OWN | LTQ_DMA_SOP | LTQ_DMA_EOP |
+ 		LTQ_DMA_TX_OFFSET(byte_offset) | (len & LTQ_DMA_SIZE_MASK);
+-	ch->dma.desc++;
+-	ch->dma.desc %= LTQ_DESC_NUM;
++	priv->txch.dma.desc++;
++	priv->txch.dma.desc %= LTQ_DESC_NUM;
+ 	spin_unlock_irqrestore(&priv->lock, flags);
+ 
+-	if (ch->dma.desc_base[ch->dma.desc].ctl & LTQ_DMA_OWN)
++	if (priv->txch.dma.desc_base[priv->txch.dma.desc].ctl & LTQ_DMA_OWN)
+ 		netif_tx_stop_queue(txq);
+ 
+ 	return NETDEV_TX_OK;
+@@ -566,8 +762,10 @@ ltq_etop_change_mtu(struct net_device *d
+ 		struct ltq_etop_priv *priv = netdev_priv(dev);
+ 		unsigned long flags;
+ 
++		int max = ETH_HLEN + VLAN_HLEN + new_mtu + ETH_FCS_LEN;
++
+ 		spin_lock_irqsave(&priv->lock, flags);
+-		ltq_etop_w32((ETOP_PLEN_UNDER << 16) | new_mtu,
++		ltq_etop_w32((ETOP_PLEN_UNDER << 16) | max,
+ 			LTQ_ETOP_IGPLEN);
+ 		spin_unlock_irqrestore(&priv->lock, flags);
+ 	}
+@@ -638,6 +836,9 @@ ltq_etop_init(struct net_device *dev)
+ 	if (err)
+ 		goto err_hw;
+ 	ltq_etop_change_mtu(dev, 1500);
++	err = ltq_etop_dma_init(dev);
++	if (err)
++		goto err_hw;
+ 
+ 	memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
+ 	if (!is_valid_ether_addr(mac.sa_data)) {
+@@ -655,9 +856,10 @@ ltq_etop_init(struct net_device *dev)
+ 		dev->addr_assign_type = NET_ADDR_RANDOM;
+ 
+ 	ltq_etop_set_multicast_list(dev);
+-	err = ltq_etop_mdio_init(dev);
+-	if (err)
+-		goto err_netdev;
++	if (!ltq_etop_mdio_init(dev))
++		dev->ethtool_ops = &ltq_etop_ethtool_ops;
++	else
++		pr_warn("etop: mdio probe failed\n");;
+ 	return 0;
+ 
+ err_netdev:
+@@ -677,6 +879,9 @@ ltq_etop_tx_timeout(struct net_device *d
+ 	err = ltq_etop_hw_init(dev);
+ 	if (err)
+ 		goto err_hw;
++	err = ltq_etop_dma_init(dev);
++	if (err)
++		goto err_hw;
+ 	dev->trans_start = jiffies;
+ 	netif_wake_queue(dev);
+ 	return;
+@@ -700,14 +905,18 @@ static const struct net_device_ops ltq_e
+ 	.ndo_tx_timeout = ltq_etop_tx_timeout,
+ };
+ 
+-static int __init
+-ltq_etop_probe(struct platform_device *pdev)
++static int ltq_etop_probe(struct platform_device *pdev)
+ {
+ 	struct net_device *dev;
+ 	struct ltq_etop_priv *priv;
+-	struct resource *res;
++	struct resource *res, *gbit_res, irqres[2];
+ 	int err;
+-	int i;
++
++	err = of_irq_to_resource_table(pdev->dev.of_node, irqres, 2);
++	if (err != 2) {
++		dev_err(&pdev->dev, "failed to get etop irqs\n");
++		return -EINVAL;
++	}
+ 
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	if (!res) {
+@@ -733,30 +942,58 @@ ltq_etop_probe(struct platform_device *p
+ 		goto err_out;
+ 	}
+ 
+-	dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
+-	if (!dev) {
+-		err = -ENOMEM;
+-		goto err_out;
++	if (of_machine_is_compatible("lantiq,ar9")) {
++		gbit_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++		if (!gbit_res) {
++			dev_err(&pdev->dev, "failed to get gbit resource\n");
++			err = -ENOENT;
++			goto err_out;
++		}
++		ltq_gbit_membase = devm_ioremap_nocache(&pdev->dev,
++			gbit_res->start, resource_size(gbit_res));
++		if (!ltq_gbit_membase) {
++			dev_err(&pdev->dev, "failed to remap gigabit switch %d\n",
++				pdev->id);
++			err = -ENOMEM;
++			goto err_out;
++		}
+ 	}
++
++	dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
+ 	strcpy(dev->name, "eth%d");
+ 	dev->netdev_ops = &ltq_eth_netdev_ops;
+-	dev->ethtool_ops = &ltq_etop_ethtool_ops;
+ 	priv = netdev_priv(dev);
+ 	priv->res = res;
+ 	priv->pdev = pdev;
+-	priv->pldata = dev_get_platdata(&pdev->dev);
+ 	priv->netdev = dev;
++	priv->tx_irq = irqres[0].start;
++	priv->rx_irq = irqres[1].start;
++	priv->mii_mode = of_get_phy_mode(pdev->dev.of_node);
++	of_get_mac_address_mtd(pdev->dev.of_node, priv->mac);
++
++	priv->clk_ppe = clk_get(&pdev->dev, NULL);
++	if (IS_ERR(priv->clk_ppe))
++		return PTR_ERR(priv->clk_ppe);
++	if (of_machine_is_compatible("lantiq,ar9")) {
++		priv->clk_switch = clk_get(&pdev->dev, "switch");
++		if (IS_ERR(priv->clk_switch))
++			return PTR_ERR(priv->clk_switch);
++	}
++	if (of_machine_is_compatible("lantiq,ase")) {
++		priv->clk_ephy = clk_get(&pdev->dev, "ephy");
++		if (IS_ERR(priv->clk_ephy))
++			return PTR_ERR(priv->clk_ephy);
++		priv->clk_ephycgu = clk_get(&pdev->dev, "ephycgu");
++		if (IS_ERR(priv->clk_ephycgu))
++			return PTR_ERR(priv->clk_ephycgu);
++	}
++
+ 	spin_lock_init(&priv->lock);
+ 
+-	for (i = 0; i < MAX_DMA_CHAN; i++) {
+-		if (IS_TX(i))
+-			netif_napi_add(dev, &priv->ch[i].napi,
+-				ltq_etop_poll_tx, 8);
+-		else if (IS_RX(i))
+-			netif_napi_add(dev, &priv->ch[i].napi,
+-				ltq_etop_poll_rx, 32);
+-		priv->ch[i].netdev = dev;
+-	}
++	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;
++	priv->rxch.netdev = dev;
+ 
+ 	err = register_netdev(dev);
+ 	if (err)
+@@ -785,32 +1022,23 @@ ltq_etop_remove(struct platform_device *
+ 	return 0;
+ }
+ 
++static const struct of_device_id ltq_etop_match[] = {
++	{ .compatible = "lantiq,etop-xway" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, ltq_etop_match);
++
+ static struct platform_driver ltq_mii_driver = {
++	.probe = ltq_etop_probe,
+ 	.remove = ltq_etop_remove,
+ 	.driver = {
+ 		.name = "ltq_etop",
+ 		.owner = THIS_MODULE,
++		.of_match_table = ltq_etop_match,
+ 	},
+ };
+ 
+-int __init
+-init_ltq_etop(void)
+-{
+-	int ret = platform_driver_probe(&ltq_mii_driver, ltq_etop_probe);
+-
+-	if (ret)
+-		pr_err("ltq_etop: Error registering platform driver!");
+-	return ret;
+-}
+-
+-static void __exit
+-exit_ltq_etop(void)
+-{
+-	platform_driver_unregister(&ltq_mii_driver);
+-}
+-
+-module_init(init_ltq_etop);
+-module_exit(exit_ltq_etop);
++module_platform_driver(ltq_mii_driver);
+ 
+ MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+ MODULE_DESCRIPTION("Lantiq SoC ETOP");