From fbfdf78ba827a8f854ae3ed7b11ea6df4054ffb1 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Mon, 22 Oct 2012 12:22:23 +0200 Subject: [PATCH 25/40] NET: MIPS: lantiq: adds xrx200-net --- drivers/net/ethernet/Kconfig | 8 +- drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/lantiq_pce.h | 163 +++++ drivers/net/ethernet/lantiq_xrx200.c | 1203 ++++++++++++++++++++++++++++++++++ 4 files changed, 1374 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/lantiq_pce.h create mode 100644 drivers/net/ethernet/lantiq_xrx200.c --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -83,7 +83,13 @@ config LANTIQ_ETOP tristate "Lantiq SoC ETOP driver" depends on SOC_TYPE_XWAY ---help--- - Support for the MII0 inside the Lantiq SoC + Support for the MII0 inside the Lantiq ADSL SoC + +config LANTIQ_XRX200 + tristate "Lantiq SoC XRX200 driver" + depends on SOC_TYPE_XWAY + ---help--- + Support for the MII0 inside the Lantiq VDSL SoC source "drivers/net/ethernet/marvell/Kconfig" source "drivers/net/ethernet/mellanox/Kconfig" --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_IP1000) += icplus/ obj-$(CONFIG_JME) += jme.o obj-$(CONFIG_KORINA) += korina.o obj-$(CONFIG_LANTIQ_ETOP) += lantiq_etop.o +obj-$(CONFIG_LANTIQ_XRX200) += lantiq_xrx200.o obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/ obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/ obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/ --- /dev/null +++ b/drivers/net/ethernet/lantiq_pce.h @@ -0,0 +1,163 @@ +/* + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * 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) 2010 Lantiq Deutschland GmbH + * Copyright (C) 2012 John Crispin + * + * PCE microcode extracted from UGW5.2 switch api + */ + +/* Switch API Micro Code V0.3 */ +enum { + OUT_MAC0 = 0, + OUT_MAC1, + OUT_MAC2, + OUT_MAC3, + OUT_MAC4, + OUT_MAC5, + OUT_ETHTYP, + OUT_VTAG0, + OUT_VTAG1, + OUT_ITAG0, + OUT_ITAG1, /*10 */ + OUT_ITAG2, + OUT_ITAG3, + OUT_IP0, + OUT_IP1, + OUT_IP2, + OUT_IP3, + OUT_SIP0, + OUT_SIP1, + OUT_SIP2, + OUT_SIP3, /*20*/ + OUT_SIP4, + OUT_SIP5, + OUT_SIP6, + OUT_SIP7, + OUT_DIP0, + OUT_DIP1, + OUT_DIP2, + OUT_DIP3, + OUT_DIP4, + OUT_DIP5, /*30*/ + OUT_DIP6, + OUT_DIP7, + OUT_SESID, + OUT_PROT, + OUT_APP0, + OUT_APP1, + OUT_IGMP0, + OUT_IGMP1, + OUT_IPOFF, /*39*/ + OUT_NONE = 63 +}; + +/* parser's microcode length type */ +#define INSTR 0 +#define IPV6 1 +#define LENACCU 2 + +/* parser's microcode flag type */ +enum { + FLAG_ITAG = 0, + FLAG_VLAN, + FLAG_SNAP, + FLAG_PPPOE, + FLAG_IPV6, + FLAG_IPV6FL, + FLAG_IPV4, + FLAG_IGMP, + FLAG_TU, + FLAG_HOP, + FLAG_NN1, /*10 */ + FLAG_NN2, + FLAG_END, + FLAG_NO, /*13*/ +}; + +/* Micro code version V2_11 (extension for parsing IPv6 in PPPoE) */ +#define MC_ENTRY(val, msk, ns, out, len, type, flags, ipv4_len) \ + { {val, msk, (ns<<10 | out<<4 | len>>1), (len&1)<<15 | type<<13 | flags<<9 | ipv4_len<<8 }} +struct pce_microcode { + unsigned short val[4]; +/* unsigned short val_2; + unsigned short val_1; + unsigned short val_0;*/ +} pce_microcode[] = { + /* value mask ns fields L type flags ipv4_len */ + MC_ENTRY(0x88c3, 0xFFFF, 1, OUT_ITAG0, 4, INSTR, FLAG_ITAG, 0), + MC_ENTRY(0x8100, 0xFFFF, 2, OUT_VTAG0, 2, INSTR, FLAG_VLAN, 0), + MC_ENTRY(0x88A8, 0xFFFF, 1, OUT_VTAG0, 2, INSTR, FLAG_VLAN, 0), + MC_ENTRY(0x8100, 0xFFFF, 1, OUT_VTAG0, 2, INSTR, FLAG_VLAN, 0), + MC_ENTRY(0x8864, 0xFFFF, 17, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0800, 0xFFFF, 21, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x86DD, 0xFFFF, 22, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x8863, 0xFFFF, 16, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0xF800, 10, OUT_NONE, 0, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 38, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0600, 0x0600, 38, OUT_ETHTYP, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 12, OUT_NONE, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0xAAAA, 0xFFFF, 14, OUT_NONE, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0300, 0xFF00, 39, OUT_NONE, 0, INSTR, FLAG_SNAP, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_DIP7, 3, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 18, OUT_DIP7, 3, INSTR, FLAG_PPPOE, 0), + MC_ENTRY(0x0021, 0xFFFF, 21, OUT_NONE, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0057, 0xFFFF, 22, OUT_NONE, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_NO, 0), + MC_ENTRY(0x4000, 0xF000, 24, OUT_IP0, 4, INSTR, FLAG_IPV4, 1), + MC_ENTRY(0x6000, 0xF000, 27, OUT_IP0, 3, INSTR, FLAG_IPV6, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 25, OUT_IP3, 2, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 26, OUT_SIP0, 4, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 38, OUT_NONE, 0, LENACCU, FLAG_NO, 0), + MC_ENTRY(0x1100, 0xFF00, 37, OUT_PROT, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0600, 0xFF00, 37, OUT_PROT, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0xFF00, 33, OUT_IP3, 17, INSTR, FLAG_HOP, 0), + MC_ENTRY(0x2B00, 0xFF00, 33, OUT_IP3, 17, INSTR, FLAG_NN1, 0), + MC_ENTRY(0x3C00, 0xFF00, 33, OUT_IP3, 17, INSTR, FLAG_NN2, 0), + MC_ENTRY(0x0000, 0x0000, 37, OUT_PROT, 1, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0xFF00, 33, OUT_NONE, 0, IPV6, FLAG_HOP, 0), + MC_ENTRY(0x2B00, 0xFF00, 33, OUT_NONE, 0, IPV6, FLAG_NN1, 0), + MC_ENTRY(0x3C00, 0xFF00, 33, OUT_NONE, 0, IPV6, FLAG_NN2, 0), + MC_ENTRY(0x0000, 0x0000, 38, OUT_PROT, 1, IPV6, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 38, OUT_SIP0, 16, INSTR, FLAG_NO, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_APP0, 4, INSTR, FLAG_IGMP, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), + MC_ENTRY(0x0000, 0x0000, 39, OUT_NONE, 0, INSTR, FLAG_END, 0), +}; --- /dev/null +++ b/drivers/net/ethernet/lantiq_xrx200.c @@ -0,0 +1,1203 @@ +/* + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * 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) 2010 Lantiq Deutschland + * Copyright (C) 2012 John Crispin + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include "lantiq_pce.h" + +#define SW_POLLING +#define SW_ROUTING +//#define SW_PORTMAP + +#ifdef SW_ROUTING + #ifdef SW_PORTMAP +#define XRX200_MAX_DEV 7 + #else +#define XRX200_MAX_DEV 2 + #endif +#else +#define XRX200_MAX_DEV 1 +#endif + +#define XRX200_MAX_PORT 7 +#define XRX200_MAX_DMA 8 + +#define XRX200_HEADROOM 4 + +#define XRX200_TX_TIMEOUT (10 * HZ) + +/* port type */ +#define XRX200_PORT_TYPE_PHY 1 +#define XRX200_PORT_TYPE_MAC 2 + +/* DMA */ +#define XRX200_DMA_CRC_LEN 0x4 +#define XRX200_DMA_DATA_LEN 0x600 +#define XRX200_DMA_IRQ INT_NUM_IM2_IRL0 +#define XRX200_DMA_RX 0 +#define XRX200_DMA_TX 1 + +/* fetch / store dma */ +#define FDMA_PCTRL0 0x2A00 +#define FDMA_PCTRLx(x) (FDMA_PCTRL0 + (x * 0x18)) +#define SDMA_PCTRL0 0x2F00 +#define SDMA_PCTRLx(x) (SDMA_PCTRL0 + (x * 0x18)) + +/* buffer management */ +#define BM_PCFG0 0x200 +#define BM_PCFGx(x) (BM_PCFG0 + (x * 8)) + +/* MDIO */ +#define MDIO_GLOB 0x0000 +#define MDIO_CTRL 0x0020 +#define MDIO_READ 0x0024 +#define MDIO_WRITE 0x0028 +#define MDIO_PHY0 0x0054 +#define MDIO_PHY(x) (0x0054 - (x * sizeof(unsigned))) +#define MDIO_CLK_CFG0 0x002C +#define MDIO_CLK_CFG1 0x0030 + +#define MDIO_GLOB_ENABLE 0x8000 +#define MDIO_BUSY BIT(12) +#define MDIO_RD BIT(11) +#define MDIO_WR BIT(10) +#define MDIO_MASK 0x1f +#define MDIO_ADDRSHIFT 5 +#define MDIO1_25MHZ 9 + +#define MDIO_PHY_LINK_DOWN 0x4000 +#define MDIO_PHY_LINK_UP 0x2000 + +#define MDIO_PHY_SPEED_M10 0x0000 +#define MDIO_PHY_SPEED_M100 0x0800 +#define MDIO_PHY_SPEED_G1 0x1000 + +#define MDIO_PHY_FDUP_EN 0x0600 +#define MDIO_PHY_FDUP_DIS 0x0200 + +#define MDIO_PHY_LINK_MASK 0x6000 +#define MDIO_PHY_SPEED_MASK 0x1800 +#define MDIO_PHY_FDUP_MASK 0x0600 +#define MDIO_PHY_ADDR_MASK 0x001f +#define MDIO_UPDATE_MASK MDIO_PHY_ADDR_MASK | MDIO_PHY_LINK_MASK | \ + MDIO_PHY_SPEED_MASK | MDIO_PHY_FDUP_MASK + +/* MII */ +#define MII_CFG(p) (p * 8) + +#define MII_CFG_EN BIT(14) + +#define MII_CFG_MODE_MIIP 0x0 +#define MII_CFG_MODE_MIIM 0x1 +#define MII_CFG_MODE_RMIIP 0x2 +#define MII_CFG_MODE_RMIIM 0x3 +#define MII_CFG_MODE_RGMII 0x4 +#define MII_CFG_MODE_MASK 0xf + +#define MII_CFG_RATE_M2P5 0x00 +#define MII_CFG_RATE_M25 0x10 +#define MII_CFG_RATE_M125 0x20 +#define MII_CFG_RATE_M50 0x30 +#define MII_CFG_RATE_AUTO 0x40 +#define MII_CFG_RATE_MASK 0x70 + +/* cpu port mac */ +#define PMAC_HD_CTL 0x0000 +#define PMAC_RX_IPG 0x0024 +#define PMAC_EWAN 0x002c + +#define PMAC_IPG_MASK 0xf +#define PMAC_HD_CTL_AS 0x0008 +#define PMAC_HD_CTL_AC 0x0004 +#define PMAC_HD_CTL_RXSH 0x0040 +#define PMAC_HD_CTL_AST 0x0080 +#define PMAC_HD_CTL_RST 0x0100 + +/* PCE */ +#define PCE_TBL_KEY(x) (0x1100 + ((7 - x) * 4)) +#define PCE_TBL_MASK 0x1120 +#define PCE_TBL_VAL(x) (0x1124 + ((4 - x) * 4)) +#define PCE_TBL_ADDR 0x1138 +#define PCE_TBL_CTRL 0x113c +#define PCE_PMAP1 0x114c +#define PCE_PMAP2 0x1150 +#define PCE_PMAP3 0x1154 +#define PCE_GCTRL_REG(x) (0x1158 + (x * 4)) +#define PCE_PCTRL_REG(p, x) (0x1200 + (((p * 0xa) + x) * 4)) + +#define PCE_TBL_BUSY BIT(15) +#define PCE_TBL_CFG_ADDR_MASK 0x1f +#define PCE_TBL_CFG_ADWR 0x20 +#define PCE_TBL_CFG_ADWR_MASK 0x60 +#define PCE_INGRESS BIT(11) + +/* MAC */ +#define MAC_FLEN_REG (0x2314) +#define MAC_CTRL_REG(p, x) (0x240c + (((p * 0xc) + x) * 4)) + +/* buffer management */ +#define BM_PCFG(p) (0x200 + (p * 8)) + +/* special tag in TX path header */ +#define SPID_SHIFT 24 +#define DPID_SHIFT 16 +#define DPID_ENABLE 1 +#define SPID_CPU_PORT 2 +#define PORT_MAP_SEL BIT(15) +#define PORT_MAP_EN BIT(14) +#define PORT_MAP_SHIFT 1 +#define PORT_MAP_MASK 0x3f + +#define SPPID_MASK 0x7 +#define SPPID_SHIFT 4 + +/* MII regs not yet in linux */ +#define MDIO_DEVAD_NONE (-1) +#define ADVERTIZE_MPD (1 << 10) + +struct xrx200_port { + u8 num; + u8 phy_addr; + u16 flags; + phy_interface_t phy_if; + + int link; + int gpio; + enum of_gpio_flags gpio_flags; + + struct phy_device *phydev; + struct device_node *phy_node; +}; + +struct xrx200_chan { + int idx; + int refcount; + int tx_free; + + struct net_device dummy_dev; + struct net_device *devs[XRX200_MAX_DEV]; + + struct napi_struct napi; + struct ltq_dma_channel dma; + struct sk_buff *skb[LTQ_DESC_NUM]; +}; + +struct xrx200_hw { + struct clk *clk; + struct mii_bus *mii_bus; + + struct xrx200_chan chan[XRX200_MAX_DMA]; + + struct net_device *devs[XRX200_MAX_DEV]; + int num_devs; + + int port_map[XRX200_MAX_PORT]; + unsigned short wan_map; + + spinlock_t lock; +}; + +struct xrx200_priv { + struct net_device_stats stats; + int id; + + struct xrx200_port port[XRX200_MAX_PORT]; + int num_port; + int wan; + unsigned short port_map; + const void *mac; + + struct xrx200_hw *hw; +}; + +static __iomem void *xrx200_switch_membase; +static __iomem void *xrx200_mii_membase; +static __iomem void *xrx200_mdio_membase; +static __iomem void *xrx200_pmac_membase; + +#define ltq_switch_r32(x) ltq_r32(xrx200_switch_membase + (x)) +#define ltq_switch_w32(x, y) ltq_w32(x, xrx200_switch_membase + (y)) +#define ltq_switch_w32_mask(x, y, z) \ + ltq_w32_mask(x, y, xrx200_switch_membase + (z)) + +#define ltq_mdio_r32(x) ltq_r32(xrx200_mdio_membase + (x)) +#define ltq_mdio_w32(x, y) ltq_w32(x, xrx200_mdio_membase + (y)) +#define ltq_mdio_w32_mask(x, y, z) \ + ltq_w32_mask(x, y, xrx200_mdio_membase + (z)) + +#define ltq_mii_r32(x) ltq_r32(xrx200_mii_membase + (x)) +#define ltq_mii_w32(x, y) ltq_w32(x, xrx200_mii_membase + (y)) +#define ltq_mii_w32_mask(x, y, z) \ + ltq_w32_mask(x, y, xrx200_mii_membase + (z)) + +#define ltq_pmac_r32(x) ltq_r32(xrx200_pmac_membase + (x)) +#define ltq_pmac_w32(x, y) ltq_w32(x, xrx200_pmac_membase + (y)) +#define ltq_pmac_w32_mask(x, y, z) \ + ltq_w32_mask(x, y, xrx200_pmac_membase + (z)) + +static int xrx200_open(struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + unsigned long flags; + int i; + + for (i = 0; i < XRX200_MAX_DMA; i++) { + if (!priv->hw->chan[i].dma.irq) + continue; + spin_lock_irqsave(&priv->hw->lock, flags); + if (!priv->hw->chan[i].refcount) { + napi_enable(&priv->hw->chan[i].napi); + ltq_dma_open(&priv->hw->chan[i].dma); + } + priv->hw->chan[i].refcount++; + spin_unlock_irqrestore(&priv->hw->lock, flags); + } + for (i = 0; i < priv->num_port; i++) + if (priv->port[i].phydev) + phy_start(priv->port[i].phydev); + netif_start_queue(dev); + + return 0; +} + +static int xrx200_close(struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + unsigned long flags; + int i; + + netif_stop_queue(dev); + + for (i = 0; i < priv->num_port; i++) + if (priv->port[i].phydev) + phy_stop(priv->port[i].phydev); + + for (i = 0; i < XRX200_MAX_DMA; i++) { + if (!priv->hw->chan[i].dma.irq) + continue; + spin_lock_irqsave(&priv->hw->lock, flags); + priv->hw->chan[i].refcount--; + if (!priv->hw->chan[i].refcount) { + napi_disable(&priv->hw->chan[i].napi); + ltq_dma_close(&priv->hw->chan[XRX200_DMA_RX].dma); + } + spin_unlock_irqrestore(&priv->hw->lock, flags); + } + + return 0; +} + +static int xrx200_alloc_skb(struct xrx200_chan *ch) +{ +#define DMA_PAD (NET_IP_ALIGN + NET_SKB_PAD) + ch->skb[ch->dma.desc] = dev_alloc_skb(XRX200_DMA_DATA_LEN + DMA_PAD); + if (!ch->skb[ch->dma.desc]) + return -ENOMEM; + + skb_reserve(ch->skb[ch->dma.desc], NET_SKB_PAD); + ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(NULL, + ch->skb[ch->dma.desc]->data, XRX200_DMA_DATA_LEN, + DMA_FROM_DEVICE); + ch->dma.desc_base[ch->dma.desc].addr = + CPHYSADDR(ch->skb[ch->dma.desc]->data); + ch->dma.desc_base[ch->dma.desc].ctl = + LTQ_DMA_OWN | LTQ_DMA_RX_OFFSET(NET_IP_ALIGN) | + XRX200_DMA_DATA_LEN; + skb_reserve(ch->skb[ch->dma.desc], NET_IP_ALIGN); + + return 0; +} + +static void xrx200_hw_receive(struct xrx200_chan *ch, int id) +{ + struct net_device *dev = ch->devs[id]; + struct xrx200_priv *priv = netdev_priv(dev); + struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc]; + struct sk_buff *skb = ch->skb[ch->dma.desc]; + int len = (desc->ctl & LTQ_DMA_SIZE_MASK) - XRX200_DMA_CRC_LEN; + unsigned long flags; + + spin_lock_irqsave(&priv->hw->lock, flags); + if (xrx200_alloc_skb(ch)) { + netdev_err(dev, + "failed to allocate new rx buffer, stopping DMA\n"); + ltq_dma_close(&ch->dma); + } + + ch->dma.desc++; + ch->dma.desc %= LTQ_DESC_NUM; + spin_unlock_irqrestore(&priv->hw->lock, flags); + + skb_put(skb, len); +#ifdef SW_ROUTING + skb_pull(skb, 8); +#endif + skb->dev = dev; + skb->protocol = eth_type_trans(skb, dev); + netif_receive_skb(skb); + priv->stats.rx_packets++; + priv->stats.rx_bytes+=len; +} + +static int xrx200_poll_rx(struct napi_struct *napi, int budget) +{ + struct xrx200_chan *ch = container_of(napi, + struct xrx200_chan, napi); + struct xrx200_priv *priv = netdev_priv(ch->devs[0]); + 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]; + if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) == LTQ_DMA_C) { +#ifdef SW_ROUTING + struct sk_buff *skb = ch->skb[ch->dma.desc]; + u32 *special_tag = (u32*)skb->data; + int port = (special_tag[1] >> SPPID_SHIFT) & SPPID_MASK; + xrx200_hw_receive(ch, priv->hw->port_map[port]); +#else + xrx200_hw_receive(ch, 0); +#endif + rx++; + } else { + complete = 1; + } + } + if (complete || !rx) { + napi_complete(&ch->napi); + spin_lock_irqsave(&priv->hw->lock, flags); + ltq_dma_ack_irq(&ch->dma); + spin_unlock_irqrestore(&priv->hw->lock, flags); + } + return rx; +} + +static int xrx200_poll_tx(struct napi_struct *napi, int budget) +{ + struct xrx200_chan *ch = + container_of(napi, struct xrx200_chan, napi); + struct xrx200_priv *priv = netdev_priv(ch->devs[0]); + unsigned long flags; + int i; + + spin_lock_irqsave(&priv->hw->lock, flags); + while ((ch->dma.desc_base[ch->tx_free].ctl & + (LTQ_DMA_OWN | LTQ_DMA_C)) == LTQ_DMA_C) { + dev_kfree_skb_any(ch->skb[ch->tx_free]); + ch->skb[ch->tx_free] = NULL; + memset(&ch->dma.desc_base[ch->tx_free], 0, + sizeof(struct ltq_dma_desc)); + ch->tx_free++; + ch->tx_free %= LTQ_DESC_NUM; + } + spin_unlock_irqrestore(&priv->hw->lock, flags); + + for (i = 0; i < XRX200_MAX_DEV && ch->devs[i]; i++) { + struct netdev_queue *txq = + netdev_get_tx_queue(ch->devs[i], 0); + if (netif_tx_queue_stopped(txq)) + netif_tx_start_queue(txq); + } + napi_complete(&ch->napi); + spin_lock_irqsave(&priv->hw->lock, flags); + ltq_dma_ack_irq(&ch->dma); + spin_unlock_irqrestore(&priv->hw->lock, flags); + + return 1; +} + +static struct net_device_stats *xrx200_get_stats (struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + + return &priv->stats; +} + +static void xrx200_tx_timeout(struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + + printk(KERN_ERR "%s: transmit timed out, disable the dma channel irq\n", dev->name); + + priv->stats.tx_errors++; + netif_wake_queue(dev); +} + +static int xrx200_start_xmit(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 xrx200_priv *priv = netdev_priv(dev); + struct xrx200_chan *ch = &priv->hw->chan[XRX200_DMA_TX]; + struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc]; + unsigned long flags; + u32 byte_offset; + int len; +#ifdef SW_ROUTING + #ifdef SW_PORTMAP + u32 special_tag = (SPID_CPU_PORT << SPID_SHIFT) | PORT_MAP_SEL | PORT_MAP_EN | DPID_ENABLE; + #else + u32 special_tag = (SPID_CPU_PORT << SPID_SHIFT) | DPID_ENABLE; + #endif +#endif + + len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; + + if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) { + netdev_err(dev, "tx ring full\n"); + netif_tx_stop_queue(txq); + return NETDEV_TX_BUSY; + } +#ifdef SW_ROUTING + #ifdef SW_PORTMAP + special_tag |= priv->port_map << PORT_MAP_SHIFT; + #else + if(priv->id) + special_tag |= (1 << DPID_SHIFT); + #endif + if(skb_headroom(skb) < 4) { + struct sk_buff *tmp = skb_realloc_headroom(skb, 4); + dev_kfree_skb_any(skb); + skb = tmp; + } + skb_push(skb, 4); + memcpy(skb->data, &special_tag, sizeof(u32)); + len += 4; +#endif + + /* dma needs to start on a 16 byte aligned address */ + byte_offset = CPHYSADDR(skb->data) % 16; + ch->skb[ch->dma.desc] = skb; + + dev->trans_start = jiffies; + + spin_lock_irqsave(&priv->hw->lock, flags); + desc->addr = ((unsigned int) dma_map_single(NULL, skb->data, len, + DMA_TO_DEVICE)) - byte_offset; + 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; + spin_unlock_irqrestore(&priv->hw->lock, flags); + + if (ch->dma.desc_base[ch->dma.desc].ctl & LTQ_DMA_OWN) + netif_tx_stop_queue(txq); + + priv->stats.tx_packets++; + priv->stats.tx_bytes+=len; + + return NETDEV_TX_OK; +} + +static irqreturn_t xrx200_dma_irq(int irq, void *priv) +{ + struct xrx200_hw *hw = priv; + int ch = irq - XRX200_DMA_IRQ; + + napi_schedule(&hw->chan[ch].napi); + + return IRQ_HANDLED; +} + +static int xrx200_dma_init(struct xrx200_hw *hw) +{ + int i, err = 0; + + ltq_dma_init_port(DMA_PORT_ETOP); + + for (i = 0; i < 8 && !err; i++) { + int irq = XRX200_DMA_IRQ + i; + struct xrx200_chan *ch = &hw->chan[i]; + + ch->idx = ch->dma.nr = i; + + if (i == XRX200_DMA_TX) { + ltq_dma_alloc_tx(&ch->dma); + err = request_irq(irq, xrx200_dma_irq, 0, "vrx200_tx", hw); + } else if (i == XRX200_DMA_RX) { + ltq_dma_alloc_rx(&ch->dma); + for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM; + ch->dma.desc++) + if (xrx200_alloc_skb(ch)) + err = -ENOMEM; + ch->dma.desc = 0; + err = request_irq(irq, xrx200_dma_irq, 0, "vrx200_rx", hw); + } else + continue; + + if (!err) + ch->dma.irq = irq; + } + + return err; +} + +#ifdef SW_POLLING +static void xrx200_gmac_update(struct xrx200_port *port) +{ + u16 phyaddr = port->phydev->addr & MDIO_PHY_ADDR_MASK; + u16 miimode = ltq_mii_r32(MII_CFG(port->num)) & MII_CFG_MODE_MASK; + u16 miirate = 0; + + switch (port->phydev->speed) { + case SPEED_1000: + phyaddr |= MDIO_PHY_SPEED_G1; + miirate = MII_CFG_RATE_M125; + break; + + case SPEED_100: + phyaddr |= MDIO_PHY_SPEED_M100; + switch (miimode) { + case MII_CFG_MODE_RMIIM: + case MII_CFG_MODE_RMIIP: + miirate = MII_CFG_RATE_M50; + break; + default: + miirate = MII_CFG_RATE_M25; + break; + } + break; + + default: + phyaddr |= MDIO_PHY_SPEED_M10; + miirate = MII_CFG_RATE_M2P5; + break; + } + + if (port->phydev->link) + phyaddr |= MDIO_PHY_LINK_UP; + else + phyaddr |= MDIO_PHY_LINK_DOWN; + + if (port->phydev->duplex == DUPLEX_FULL) + phyaddr |= MDIO_PHY_FDUP_EN; + else + phyaddr |= MDIO_PHY_FDUP_DIS; + + ltq_mdio_w32_mask(MDIO_UPDATE_MASK, phyaddr, MDIO_PHY(port->num)); + ltq_mii_w32_mask(MII_CFG_RATE_MASK, miirate, MII_CFG(port->num)); + udelay(1); +} +#else +static void xrx200_gmac_update(struct xrx200_port *port) +{ + +} +#endif + +static void xrx200_mdio_link(struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + int i; + + for (i = 0; i < priv->num_port; i++) { + if (!priv->port[i].phydev) + continue; + + if (priv->port[i].link != priv->port[i].phydev->link) { + xrx200_gmac_update(&priv->port[i]); + priv->port[i].link = priv->port[i].phydev->link; + netdev_info(dev, "port %d %s link\n", + priv->port[i].num, + (priv->port[i].link)?("got"):("lost")); + } + } +} + +static inline int xrx200_mdio_poll(struct mii_bus *bus) +{ + unsigned cnt = 10000; + + while (likely(cnt--)) { + unsigned ctrl = ltq_mdio_r32(MDIO_CTRL); + if ((ctrl & MDIO_BUSY) == 0) + return 0; + } + + return 1; +} + +static int xrx200_mdio_wr(struct mii_bus *bus, int addr, int reg, u16 val) +{ + if (xrx200_mdio_poll(bus)) + return 1; + + ltq_mdio_w32(val, MDIO_WRITE); + ltq_mdio_w32(MDIO_BUSY | MDIO_WR | + ((addr & MDIO_MASK) << MDIO_ADDRSHIFT) | + (reg & MDIO_MASK), + MDIO_CTRL); + + return 0; +} + +static int xrx200_mdio_rd(struct mii_bus *bus, int addr, int reg) +{ + if (xrx200_mdio_poll(bus)) + return -1; + + ltq_mdio_w32(MDIO_BUSY | MDIO_RD | + ((addr & MDIO_MASK) << MDIO_ADDRSHIFT) | + (reg & MDIO_MASK), + MDIO_CTRL); + + if (xrx200_mdio_poll(bus)) + return -1; + + return ltq_mdio_r32(MDIO_READ); +} + +static int xrx200_mdio_probe(struct net_device *dev, struct xrx200_port *port) +{ + struct xrx200_priv *priv = netdev_priv(dev); + struct phy_device *phydev = NULL; + unsigned val; + + phydev = priv->hw->mii_bus->phy_map[port->phy_addr]; + + if (!phydev) { + netdev_err(dev, "no PHY found\n"); + return -ENODEV; + } + + phydev = phy_connect(dev, dev_name(&phydev->dev), &xrx200_mdio_link, + 0, port->phy_if); + + 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_1000baseT_Half + | SUPPORTED_1000baseT_Full + | SUPPORTED_Autoneg + | SUPPORTED_MII + | SUPPORTED_TP); + phydev->advertising = phydev->supported; + port->phydev = phydev; + + pr_info("%s: attached PHY [%s] (phy_addr=%s, irq=%d)\n", + dev->name, phydev->drv->name, + dev_name(&phydev->dev), phydev->irq); + +#ifdef SW_POLLING + phy_read_status(phydev); + + val = xrx200_mdio_rd(priv->hw->mii_bus, MDIO_DEVAD_NONE, MII_CTRL1000); + val |= ADVERTIZE_MPD; + xrx200_mdio_wr(priv->hw->mii_bus, MDIO_DEVAD_NONE, MII_CTRL1000, val); + xrx200_mdio_wr(priv->hw->mii_bus, 0, 0, 0x1040); + + phy_start_aneg(phydev); +#endif + return 0; +} + +static void xrx200_port_config(struct xrx200_priv *priv, + const struct xrx200_port *port) +{ + u16 miimode = 0; + + switch (port->num) { + case 0: /* xMII0 */ + case 1: /* xMII1 */ + switch (port->phy_if) { + case PHY_INTERFACE_MODE_MII: + if (port->flags & XRX200_PORT_TYPE_PHY) + /* MII MAC mode, connected to external PHY */ + miimode = MII_CFG_MODE_MIIM; + else + /* MII PHY mode, connected to external MAC */ + miimode = MII_CFG_MODE_MIIP; + break; + case PHY_INTERFACE_MODE_RMII: + if (port->flags & XRX200_PORT_TYPE_PHY) + /* RMII MAC mode, connected to external PHY */ + miimode = MII_CFG_MODE_RMIIM; + else + /* RMII PHY mode, connected to external MAC */ + miimode = MII_CFG_MODE_RMIIP; + break; + case PHY_INTERFACE_MODE_RGMII: + /* RGMII MAC mode, connected to external PHY */ + miimode = MII_CFG_MODE_RGMII; + break; + default: + break; + } + break; + case 2: /* internal GPHY0 */ + case 3: /* internal GPHY0 */ + case 4: /* internal GPHY1 */ + switch (port->phy_if) { + case PHY_INTERFACE_MODE_MII: + case PHY_INTERFACE_MODE_GMII: + /* MII MAC mode, connected to internal GPHY */ + miimode = MII_CFG_MODE_MIIM; + break; + default: + break; + } + break; + case 5: /* internal GPHY1 or xMII2 */ + switch (port->phy_if) { + case PHY_INTERFACE_MODE_MII: + /* MII MAC mode, connected to internal GPHY */ + miimode = MII_CFG_MODE_MIIM; + break; + case PHY_INTERFACE_MODE_RGMII: + /* RGMII MAC mode, connected to external PHY */ + miimode = MII_CFG_MODE_RGMII; + break; + default: + break; + } + break; + default: + break; + } + + ltq_mii_w32_mask(MII_CFG_MODE_MASK, miimode | MII_CFG_EN, + MII_CFG(port->num)); +} + +static int xrx200_init(struct net_device *dev) +{ + struct xrx200_priv *priv = netdev_priv(dev); + struct sockaddr mac; + int err, i; + +#ifndef SW_POLLING + unsigned int reg = 0; + + /* enable auto polling */ + for (i = 0; i < priv->num_port; i++) + reg |= BIT(priv->port[i].num); + ltq_mdio_w32(reg, MDIO_CLK_CFG0); + ltq_mdio_w32(MDIO1_25MHZ, MDIO_CLK_CFG1); +#endif + + /* setup each port */ + for (i = 0; i < priv->num_port; i++) + xrx200_port_config(priv, &priv->port[i]); + + memcpy(&mac.sa_data, priv->mac, ETH_ALEN); + if (!is_valid_ether_addr(mac.sa_data)) { + pr_warn("net-xrx200: invalid MAC, using random\n"); + eth_random_addr(mac.sa_data); + dev->addr_assign_type |= NET_ADDR_RANDOM; + } + + err = eth_mac_addr(dev, &mac); + if (err) + goto err_netdev; + + for (i = 0; i < priv->num_port; i++) + if (xrx200_mdio_probe(dev, &priv->port[i])) + pr_warn("xrx200-mdio: probing phy of port %d failed\n", + priv->port[i].num); + + return 0; + +err_netdev: + unregister_netdev(dev); + free_netdev(dev); + return err; +} + +static void xrx200_pci_microcode(void) +{ + int i; + + ltq_switch_w32_mask(PCE_TBL_CFG_ADDR_MASK | PCE_TBL_CFG_ADWR_MASK, + PCE_TBL_CFG_ADWR, PCE_TBL_CTRL); + ltq_switch_w32(0, PCE_TBL_MASK); + + for (i = 0; i < ARRAY_SIZE(pce_microcode); i++) { + ltq_switch_w32(i, PCE_TBL_ADDR); + ltq_switch_w32(pce_microcode[i].val[3], PCE_TBL_VAL(0)); + ltq_switch_w32(pce_microcode[i].val[2], PCE_TBL_VAL(1)); + ltq_switch_w32(pce_microcode[i].val[1], PCE_TBL_VAL(2)); + ltq_switch_w32(pce_microcode[i].val[0], PCE_TBL_VAL(3)); + + // start the table access: + ltq_switch_w32_mask(0, PCE_TBL_BUSY, PCE_TBL_CTRL); + while (ltq_switch_r32(PCE_TBL_CTRL) & PCE_TBL_BUSY); + } + + /* tell the switch that the microcode is loaded */ + ltq_switch_w32_mask(0, BIT(3), PCE_GCTRL_REG(0)); +} + +static void xrx200_hw_init(struct xrx200_hw *hw) +{ + int i; + + /* enable clock gate */ + clk_enable(hw->clk); + + ltq_switch_w32(1, 0); + mdelay(100); + ltq_switch_w32(0, 0); + /* + * TODO: we should really disbale all phys/miis here and explicitly + * enable them in the device secific init function + */ + + /* disable port fetch/store dma */ + for (i = 0; i < 7; i++ ) { + ltq_switch_w32(0, FDMA_PCTRLx(i)); + ltq_switch_w32(0, SDMA_PCTRLx(i)); + } + + /* enable Switch */ + ltq_mdio_w32_mask(0, MDIO_GLOB_ENABLE, MDIO_GLOB); + + /* load the pce microcode */ + xrx200_pci_microcode(); + + /* Default unknown Broadcat/Multicast/Unicast port maps */ + ltq_switch_w32(0x7f, PCE_PMAP1); + ltq_switch_w32(0x7f, PCE_PMAP2); + ltq_switch_w32(0x7f, PCE_PMAP3); + + /* RMON Counter Enable for all physical ports */ + for (i = 0; i < 7; i++) + ltq_switch_w32(0x1, BM_PCFG(i)); + + /* disable auto polling */ + ltq_mdio_w32(0x0, MDIO_CLK_CFG0); + + /* enable port statistic counters */ + for (i = 0; i < 7; i++) + ltq_switch_w32(0x1, BM_PCFGx(i)); + + /* set IPG to 12 */ + ltq_pmac_w32_mask(PMAC_IPG_MASK, 0xb, PMAC_RX_IPG); + +#ifdef SW_ROUTING + /* enable status header, enable CRC */ + ltq_pmac_w32_mask(0, + PMAC_HD_CTL_RST | PMAC_HD_CTL_AST | PMAC_HD_CTL_RXSH | PMAC_HD_CTL_AS | PMAC_HD_CTL_AC, + PMAC_HD_CTL); +#else + /* disable status header, enable CRC */ + ltq_pmac_w32_mask(PMAC_HD_CTL_AST | PMAC_HD_CTL_RXSH | PMAC_HD_CTL_AS, + PMAC_HD_CTL_AC, + PMAC_HD_CTL); +#endif + + /* enable port fetch/store dma */ + for (i = 0; i < 7; i++ ) { + ltq_switch_w32_mask(0, 0x01, FDMA_PCTRLx(i)); + ltq_switch_w32_mask(0, 0x01, SDMA_PCTRLx(i)); + ltq_switch_w32_mask(0, PCE_INGRESS, PCE_PCTRL_REG(i, 0)); + } + + /* enable special tag insertion on cpu port */ + ltq_switch_w32_mask(0, 0x02, FDMA_PCTRLx(6)); + ltq_switch_w32_mask(0, PCE_INGRESS, PCE_PCTRL_REG(6, 0)); + ltq_switch_w32_mask(0, BIT(3), MAC_CTRL_REG(6, 2)); + ltq_switch_w32(1518 + 8 + 4 * 2, MAC_FLEN_REG); +} + +static void xrx200_hw_cleanup(struct xrx200_hw *hw) +{ + int i; + + /* disable the switch */ + ltq_mdio_w32_mask(MDIO_GLOB_ENABLE, 0, MDIO_GLOB); + + /* free the channels and IRQs */ + for (i = 0; i < 2; i++) { + ltq_dma_free(&hw->chan[i].dma); + if (hw->chan[i].dma.irq) + free_irq(hw->chan[i].dma.irq, hw); + } + + /* free the allocated RX ring */ + for (i = 0; i < LTQ_DESC_NUM; i++) + dev_kfree_skb_any(hw->chan[XRX200_DMA_RX].skb[i]); + + /* clear the mdio bus */ + mdiobus_unregister(hw->mii_bus); + mdiobus_free(hw->mii_bus); + + /* release the clock */ + clk_disable(hw->clk); + clk_put(hw->clk); +} + +static int xrx200_of_mdio(struct xrx200_hw *hw, struct device_node *np) +{ + int i; + hw->mii_bus = mdiobus_alloc(); + if (!hw->mii_bus) + return -ENOMEM; + + hw->mii_bus->read = xrx200_mdio_rd; + hw->mii_bus->write = xrx200_mdio_wr; + hw->mii_bus->name = "lantiq,xrx200-mdio"; + snprintf(hw->mii_bus->id, MII_BUS_ID_SIZE, "%x", 0); + + if (of_mdiobus_register(hw->mii_bus, np)) { + mdiobus_free(hw->mii_bus); + return -ENXIO; + } + + return 0; +} + +static void xrx200_of_port(struct xrx200_priv *priv, struct device_node *port) +{ + const __be32 *addr, *id = of_get_property(port, "reg", NULL); + struct xrx200_port *p = &priv->port[priv->num_port]; + + if (!id) + return; + + memset(p, 0, sizeof(struct xrx200_port)); + p->phy_node = of_parse_phandle(port, "phy-handle", 0); + addr = of_get_property(p->phy_node, "reg", NULL); + if (!addr) + return; + + p->num = *id; + p->phy_addr = *addr; + p->phy_if = of_get_phy_mode(port); + if (p->phy_addr > 0x10) + p->flags = XRX200_PORT_TYPE_MAC; + else + p->flags = XRX200_PORT_TYPE_PHY; + priv->num_port++; + + p->gpio = of_get_gpio_flags(port, 0, &p->gpio_flags); + if (gpio_is_valid(p->gpio)) + if (!gpio_request(p->gpio, "phy-reset")) { + gpio_direction_output(p->gpio, + (p->gpio_flags & OF_GPIO_ACTIVE_LOW) ? (1) : (0)); + udelay(100); + gpio_set_value(p->gpio, (p->gpio_flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1)); + } + /* is this port a wan port ? */ + if (priv->wan) + priv->hw->wan_map |= BIT(p->num); + + priv->port_map |= BIT(p->num); + + /* store the port id in the hw struct so we can map ports -> devices */ + priv->hw->port_map[p->num] = priv->hw->num_devs; +} + +static const struct net_device_ops xrx200_netdev_ops = { + .ndo_init = xrx200_init, + .ndo_open = xrx200_open, + .ndo_stop = xrx200_close, + .ndo_start_xmit = xrx200_start_xmit, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_get_stats = xrx200_get_stats, + .ndo_tx_timeout = xrx200_tx_timeout, +}; + +static void xrx200_of_iface(struct xrx200_hw *hw, struct device_node *iface) +{ + struct xrx200_priv *priv; + struct device_node *port; + const __be32 *wan; + + /* alloc the network device */ + hw->devs[hw->num_devs] = alloc_etherdev(sizeof(struct xrx200_priv)); + if (!hw->devs[hw->num_devs]) + return; + + /* setup the network device */ + strcpy(hw->devs[hw->num_devs]->name, "eth%d"); + hw->devs[hw->num_devs]->netdev_ops = &xrx200_netdev_ops; + hw->devs[hw->num_devs]->watchdog_timeo = XRX200_TX_TIMEOUT; + hw->devs[hw->num_devs]->needed_headroom = XRX200_HEADROOM; + + /* setup our private data */ + priv = netdev_priv(hw->devs[hw->num_devs]); + priv->hw = hw; + priv->mac = of_get_mac_address(iface); + priv->id = hw->num_devs; + + /* is this the wan interface ? */ + wan = of_get_property(iface, "lantiq,wan", NULL); + if (wan && (*wan == 1)) + priv->wan = 1; + + /* load the ports that are part of the interface */ + for_each_child_of_node(iface, port) + if (of_device_is_compatible(port, "lantiq,xrx200-pdi-port")) + xrx200_of_port(priv, port); + + /* register the actual device */ + if (!register_netdev(hw->devs[hw->num_devs])) + hw->num_devs++; +} + +static struct xrx200_hw xrx200_hw; + +static int xrx200_probe(struct platform_device *pdev) +{ + struct resource *res[4]; + struct device_node *mdio_np, *iface_np; + int i; + + /* load the memory ranges */ + for (i = 0; i < 4; i++) { + res[i] = platform_get_resource(pdev, IORESOURCE_MEM, i); + if (!res[i]) { + dev_err(&pdev->dev, "failed to get resources\n"); + return -ENOENT; + } + } + xrx200_switch_membase = devm_request_and_ioremap(&pdev->dev, res[0]); + xrx200_mdio_membase = devm_request_and_ioremap(&pdev->dev, res[1]); + xrx200_mii_membase = devm_request_and_ioremap(&pdev->dev, res[2]); + xrx200_pmac_membase = devm_request_and_ioremap(&pdev->dev, res[3]); + if (!xrx200_switch_membase || !xrx200_mdio_membase || + !xrx200_mii_membase || !xrx200_pmac_membase) { + dev_err(&pdev->dev, "failed to request and remap io ranges \n"); + return -ENOMEM; + } + + /* get the clock */ + xrx200_hw.clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(xrx200_hw.clk)) { + dev_err(&pdev->dev, "failed to get clock\n"); + return PTR_ERR(xrx200_hw.clk); + } + + /* bring up the dma engine and IP core */ + spin_lock_init(&xrx200_hw.lock); + xrx200_dma_init(&xrx200_hw); + xrx200_hw_init(&xrx200_hw); + + /* bring up the mdio bus */ + mdio_np = of_find_compatible_node(pdev->dev.of_node, NULL, + "lantiq,xrx200-mdio"); + if (mdio_np) + if (xrx200_of_mdio(&xrx200_hw, mdio_np)) + dev_err(&pdev->dev, "mdio probe failed\n"); + + /* load the interfaces */ + for_each_child_of_node(pdev->dev.of_node, iface_np) + if (of_device_is_compatible(iface_np, "lantiq,xrx200-pdi")) { + if (xrx200_hw.num_devs < XRX200_MAX_DEV) + xrx200_of_iface(&xrx200_hw, iface_np); + else + dev_err(&pdev->dev, + "only %d interfaces allowed\n", + XRX200_MAX_DEV); + } + + if (!xrx200_hw.num_devs) { + xrx200_hw_cleanup(&xrx200_hw); + dev_err(&pdev->dev, "failed to load interfaces\n"); + return -ENOENT; + } + + /* set wan port mask */ + ltq_pmac_w32(xrx200_hw.wan_map, PMAC_EWAN); + + for (i = 0; i < xrx200_hw.num_devs; i++) { + xrx200_hw.chan[XRX200_DMA_RX].devs[i] = xrx200_hw.devs[i]; + xrx200_hw.chan[XRX200_DMA_TX].devs[i] = xrx200_hw.devs[i]; + } + + /* setup NAPI */ + init_dummy_netdev(&xrx200_hw.chan[XRX200_DMA_RX].dummy_dev); + init_dummy_netdev(&xrx200_hw.chan[XRX200_DMA_TX].dummy_dev); + netif_napi_add(&xrx200_hw.chan[XRX200_DMA_RX].dummy_dev, + &xrx200_hw.chan[XRX200_DMA_RX].napi, xrx200_poll_rx, 32); + netif_napi_add(&xrx200_hw.chan[XRX200_DMA_TX].dummy_dev, + &xrx200_hw.chan[XRX200_DMA_TX].napi, xrx200_poll_tx, 8); + + platform_set_drvdata(pdev, &xrx200_hw); + + return 0; +} + +static int xrx200_remove(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct xrx200_priv *priv; + + if (!dev) + return 0; + + priv = netdev_priv(dev); + + /* free stack related instances */ + netif_stop_queue(dev); + netif_napi_del(&xrx200_hw.chan[XRX200_DMA_RX].napi); + netif_napi_del(&xrx200_hw.chan[XRX200_DMA_TX].napi); + + /* shut down hardware */ + xrx200_hw_cleanup(&xrx200_hw); + + /* remove the actual device */ + unregister_netdev(dev); + free_netdev(dev); + + return 0; +} + +static const struct of_device_id xrx200_match[] = { + { .compatible = "lantiq,xrx200-net" }, + {}, +}; +MODULE_DEVICE_TABLE(of, xrx200_match); + +static struct platform_driver xrx200_driver = { + .probe = xrx200_probe, + .remove = xrx200_remove, + .driver = { + .name = "lantiq,xrx200-net", + .of_match_table = xrx200_match, + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(xrx200_driver); + +MODULE_AUTHOR("John Crispin "); +MODULE_DESCRIPTION("Lantiq SoC XRX200 ethernet"); +MODULE_LICENSE("GPL");