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openwrt-owl/target/linux/lantiq/patches-3.10/0020-NET-MIPS-lantiq-adds-x...

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From 5c7a5ddaf069b7061e1c7b536756b0b70d37b991 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Mon, 22 Oct 2012 12:22:23 +0200
Subject: [PATCH 20/34] 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 <blogic@openwrt.org>
+ *
+ * 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 <blogic@openwrt.org>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <asm/delay.h>
+
+#include <linux/of_net.h>
+#include <linux/of_mdio.h>
+#include <linux/of_gpio.h>
+
+#include <xway_dma.h>
+#include <lantiq_soc.h>
+
+#include "lantiq_pce.h"
+
+#define SW_POLLING
+#define SW_ROUTING
+#define SW_PORTMAP
+
+#ifdef SW_ROUTING
+ #ifdef SW_PORTMAP
+#define XRX200_MAX_DEV 2
+ #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
+#define XRX200_DMA_IS_TX(x) (x%2)
+#define XRX200_DMA_IS_RX(x) (!XRX200_DMA_IS_TX(x))
+
+/* 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 tasklet_struct tasklet;
+ 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;
+ unsigned char mac[6];
+
+ 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) {
+ if (XRX200_DMA_IS_RX(i))
+ 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) {
+ if (XRX200_DMA_IS_RX(i))
+ 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 void xrx200_tx_housekeeping(unsigned long ptr)
+{
+ struct xrx200_hw *hw = (struct xrx200_hw *) ptr;
+ struct xrx200_chan *ch = &hw->chan[XRX200_DMA_TX];
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&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(&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);
+ }
+
+ spin_lock_irqsave(&hw->lock, flags);
+ ltq_dma_ack_irq(&ch->dma);
+ spin_unlock_irqrestore(&hw->lock, flags);
+}
+
+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;
+
+ if (ch % 2)
+ tasklet_schedule(&hw->chan[ch].tasklet);
+ else
+ 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,
+ 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)
+{
+ 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;
+ of_get_mac_address_mtd(iface, priv->mac);
+ 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);
+ tasklet_init(&xrx200_hw.chan[XRX200_DMA_TX].tasklet, xrx200_tx_housekeeping, (u32) &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);
+ netif_napi_add(&xrx200_hw.chan[XRX200_DMA_RX].dummy_dev,
+ &xrx200_hw.chan[XRX200_DMA_RX].napi, xrx200_poll_rx, 32);
+
+ 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);
+
+ /* 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 <blogic@openwrt.org>");
+MODULE_DESCRIPTION("Lantiq SoC XRX200 ethernet");
+MODULE_LICENSE("GPL");
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