diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.10/0021-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.10/0021-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch | 836 |
1 files changed, 836 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.10/0021-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch b/target/linux/lantiq/patches-3.10/0021-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch new file mode 100644 index 0000000000..82f8869d52 --- /dev/null +++ b/target/linux/lantiq/patches-3.10/0021-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch @@ -0,0 +1,836 @@ +From e8c43773eac79f73f2dc4f10abd6d76f88540e91 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sat, 29 Jun 2013 19:42:16 +0200 +Subject: [PATCH 21/34] NET: MIPS: lantiq: update etop driver for devicetree + +--- + drivers/net/ethernet/lantiq_etop.c | 501 +++++++++++++++++++++++++----------- + 1 file changed, 355 insertions(+), 146 deletions(-) + +diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c +index bfdb0686..cdc0c0e 100644 +--- a/drivers/net/ethernet/lantiq_etop.c ++++ b/drivers/net/ethernet/lantiq_etop.c +@@ -12,7 +12,7 @@ + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + * +- * Copyright (C) 2011 John Crispin <blogic@openwrt.org> ++ * Copyright (C) 2011-12 John Crispin <blogic@openwrt.org> + */ + + #include <linux/kernel.h> +@@ -36,6 +36,10 @@ + #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> + +@@ -71,25 +75,61 @@ + #define ETOP_MII_REVERSE 0xe + #define ETOP_PLEN_UNDER 0x40 + #define ETOP_CGEN 0x800 +- +-/* 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_MII0 0x01 ++ ++#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; +@@ -99,22 +139,35 @@ 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, +@@ -149,8 +202,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan *ch) + 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 +@@ -158,8 +214,10 @@ ltq_etop_poll_rx(struct napi_struct *napi, int budget) + { + 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]; +@@ -173,7 +231,9 @@ ltq_etop_poll_rx(struct napi_struct *napi, int budget) + } + 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; + } +@@ -185,12 +245,14 @@ ltq_etop_poll_tx(struct napi_struct *napi, int budget) + 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, +@@ -203,7 +265,9 @@ ltq_etop_poll_tx(struct napi_struct *napi, int budget) + 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; + } + +@@ -211,9 +275,10 @@ 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; + } + +@@ -225,7 +290,7 @@ ltq_etop_free_channel(struct net_device *dev, struct ltq_etop_chan *ch) + 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]); +@@ -236,23 +301,62 @@ 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; ++ ++ clk_enable(priv->clk_ppe); + +- ltq_pmu_enable(PMU_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; ++ } + +- 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); +@@ -264,39 +368,68 @@ ltq_etop_hw_init(struct net_device *dev) + 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, IRQF_DISABLED, +- "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, IRQF_DISABLED, +- "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, IRQF_DISABLED, ++ "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, IRQF_DISABLED, ++ "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 +@@ -312,7 +445,10 @@ ltq_etop_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) + { + 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 +@@ -320,7 +456,10 @@ ltq_etop_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) + { + 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 +@@ -328,7 +467,10 @@ ltq_etop_nway_reset(struct net_device *dev) + { + 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 = { +@@ -339,6 +481,39 @@ static const struct ethtool_ops ltq_etop_ethtool_ops = { + }; + + 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 | +@@ -379,14 +554,18 @@ ltq_etop_mdio_probe(struct net_device *dev) + { + struct ltq_etop_priv *priv = netdev_priv(dev); + struct phy_device *phydev = NULL; +- int phy_addr; +- +- 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; +- } +- } ++ u32 phy_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,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"); +@@ -394,21 +573,18 @@ ltq_etop_mdio_probe(struct net_device *dev) + } + + phydev = phy_connect(dev, dev_name(&phydev->dev), +- <q_etop_mdio_link, priv->pldata->mii_mode); ++ <q_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", +@@ -433,8 +609,13 @@ ltq_etop_mdio_init(struct net_device *dev) + } + + 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); +@@ -483,17 +664,19 @@ 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; + } +@@ -502,18 +685,19 @@ 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 (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); + +- if (!IS_RX(i) && !IS_TX(i)) +- continue; +- napi_disable(&ch->napi); +- ltq_dma_close(&ch->dma); +- } + return 0; + } + +@@ -523,16 +707,16 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev) + 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; +@@ -540,7 +724,7 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev) + + /* 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; + +@@ -550,11 +734,11 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev) + 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; +@@ -633,34 +817,33 @@ ltq_etop_init(struct net_device *dev) + struct ltq_etop_priv *priv = netdev_priv(dev); + struct sockaddr mac; + int err; +- bool random_mac = false; + + ether_setup(dev); + dev->watchdog_timeo = 10 * HZ; + err = ltq_etop_hw_init(dev); + if (err) + goto err_hw; ++ err = ltq_etop_dma_init(dev); ++ if (err) ++ goto err_hw; ++ + ltq_etop_change_mtu(dev, 1500); + +- memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr)); ++ if (priv->mac) ++ memcpy(&mac.sa_data, priv->mac, ETH_ALEN); + if (!is_valid_ether_addr(mac.sa_data)) { + pr_warn("etop: invalid MAC, using random\n"); +- eth_random_addr(mac.sa_data); +- random_mac = true; ++ random_ether_addr(mac.sa_data); + } + + err = ltq_etop_set_mac_address(dev, &mac); + if (err) + goto err_netdev; +- +- /* Set addr_assign_type here, ltq_etop_set_mac_address would reset it. */ +- if (random_mac) +- 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 = <q_etop_ethtool_ops; ++ else ++ pr_warn("etop: mdio probe failed\n");; + return 0; + + err_netdev: +@@ -680,6 +863,9 @@ ltq_etop_tx_timeout(struct net_device *dev) + 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; +@@ -703,14 +889,18 @@ static const struct net_device_ops ltq_eth_netdev_ops = { + .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) { +@@ -736,30 +926,58 @@ ltq_etop_probe(struct platform_device *pdev) + 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 = <q_eth_netdev_ops; +- dev->ethtool_ops = <q_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) +@@ -788,32 +1006,23 @@ ltq_etop_remove(struct platform_device *pdev) + 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(<q_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(<q_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"); +-- +1.7.10.4 + |