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-rw-r--r--target/linux/lantiq/patches-3.2/0043-NET-adds-driver-for-lantiq-vr9-ethernet.patch1470
1 files changed, 1470 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.2/0043-NET-adds-driver-for-lantiq-vr9-ethernet.patch b/target/linux/lantiq/patches-3.2/0043-NET-adds-driver-for-lantiq-vr9-ethernet.patch
new file mode 100644
index 0000000000..312ac5630d
--- /dev/null
+++ b/target/linux/lantiq/patches-3.2/0043-NET-adds-driver-for-lantiq-vr9-ethernet.patch
@@ -0,0 +1,1470 @@
+From 7591c5702cfe842f415e42f387532fe71ea3640f Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Fri, 9 Mar 2012 19:03:40 +0100
+Subject: [PATCH 43/70] NET: adds driver for lantiq vr9 ethernet
+
+---
+ .../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 2 +-
+ arch/mips/lantiq/xway/devices.c | 20 +
+ arch/mips/lantiq/xway/devices.h | 1 +
+ drivers/net/ethernet/Kconfig | 6 +
+ drivers/net/ethernet/Makefile | 1 +
+ drivers/net/ethernet/lantiq_vrx200.c | 1358 ++++++++++++++++++++
+ 6 files changed, 1387 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/net/ethernet/lantiq_vrx200.c
+
+diff --git a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+index ab2d236..d1b8cc8 100644
+--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
++++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+@@ -102,7 +102,7 @@
+
+ /* GBIT - gigabit switch */
+ #define LTQ_GBIT_BASE_ADDR 0x1E108000
+-#define LTQ_GBIT_SIZE 0x200
++#define LTQ_GBIT_SIZE 0x4000
+
+ /* DMA */
+ #define LTQ_DMA_BASE_ADDR 0x1E104100
+diff --git a/arch/mips/lantiq/xway/devices.c b/arch/mips/lantiq/xway/devices.c
+index eab4644d..5efa4f3 100644
+--- a/arch/mips/lantiq/xway/devices.c
++++ b/arch/mips/lantiq/xway/devices.c
+@@ -83,6 +83,7 @@ static struct platform_device ltq_etop = {
+ .name = "ltq_etop",
+ .resource = ltq_etop_resources,
+ .num_resources = 1,
++ .id = -1,
+ };
+
+ void __init
+@@ -96,3 +97,22 @@ ltq_register_etop(struct ltq_eth_data *eth)
+ platform_device_register(&ltq_etop);
+ }
+ }
++
++/* ethernet */
++static struct resource ltq_vrx200_resources[] = {
++ MEM_RES("gbit", LTQ_GBIT_BASE_ADDR, LTQ_GBIT_SIZE),
++};
++
++static struct platform_device ltq_vrx200 = {
++ .name = "ltq_vrx200",
++ .resource = ltq_vrx200_resources,
++ .num_resources = 1,
++ .id = -1,
++};
++
++void __init
++ltq_register_vrx200(struct ltq_eth_data *eth)
++{
++ ltq_vrx200.dev.platform_data = eth;
++ platform_device_register(&ltq_vrx200);
++}
+diff --git a/arch/mips/lantiq/xway/devices.h b/arch/mips/lantiq/xway/devices.h
+index d825cbd..08befd9 100644
+--- a/arch/mips/lantiq/xway/devices.h
++++ b/arch/mips/lantiq/xway/devices.h
+@@ -17,5 +17,6 @@ extern void ltq_register_gpio_stp(void);
+ extern void ltq_register_ase_asc(void);
+ extern void ltq_register_etop(struct ltq_eth_data *eth);
+ extern void xway_register_nand(struct mtd_partition *parts, int count);
++extern void ltq_register_vrx200(struct ltq_eth_data *eth);
+
+ #endif
+diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
+index 597f4d4..2035cab 100644
+--- a/drivers/net/ethernet/Kconfig
++++ b/drivers/net/ethernet/Kconfig
+@@ -84,6 +84,12 @@ config LANTIQ_ETOP
+ ---help---
+ Support for the MII0 inside the Lantiq SoC
+
++config LANTIQ_VRX200
++ tristate "Lantiq SoC vrx200 driver"
++ depends on SOC_TYPE_XWAY
++ ---help---
++ Support for the MII0 inside the Lantiq SoC
++
+ source "drivers/net/ethernet/marvell/Kconfig"
+ source "drivers/net/ethernet/mellanox/Kconfig"
+ source "drivers/net/ethernet/micrel/Kconfig"
+diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
+index be5dde0..4fde2be 100644
+--- a/drivers/net/ethernet/Makefile
++++ b/drivers/net/ethernet/Makefile
+@@ -35,6 +35,7 @@ obj-$(CONFIG_IP1000) += icplus/
+ obj-$(CONFIG_JME) += jme.o
+ obj-$(CONFIG_KORINA) += korina.o
+ obj-$(CONFIG_LANTIQ_ETOP) += lantiq_etop.o
++obj-$(CONFIG_LANTIQ_VRX200) += lantiq_vrx200.o
+ obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/
+ obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
+ obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/
+diff --git a/drivers/net/ethernet/lantiq_vrx200.c b/drivers/net/ethernet/lantiq_vrx200.c
+new file mode 100644
+index 0000000..d79d380
+--- /dev/null
++++ b/drivers/net/ethernet/lantiq_vrx200.c
+@@ -0,0 +1,1358 @@
++/*
++ * 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) 2011 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/kernel.h>
++#include <linux/slab.h>
++#include <linux/errno.h>
++#include <linux/types.h>
++#include <linux/interrupt.h>
++#include <linux/uaccess.h>
++#include <linux/in.h>
++#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
++#include <linux/phy.h>
++#include <linux/ip.h>
++#include <linux/tcp.h>
++#include <linux/skbuff.h>
++#include <linux/mm.h>
++#include <linux/platform_device.h>
++#include <linux/ethtool.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/io.h>
++#include <linux/dma-mapping.h>
++#include <linux/module.h>
++#include <linux/clk.h>
++
++#include <asm/checksum.h>
++
++#include <lantiq_soc.h>
++#include <xway_dma.h>
++#include <lantiq_platform.h>
++
++#define LTQ_SWITCH_BASE 0x1E108000
++#define LTQ_SWITCH_CORE_BASE LTQ_SWITCH_BASE
++#define LTQ_SWITCH_TOP_PDI_BASE LTQ_SWITCH_CORE_BASE
++#define LTQ_SWITCH_BM_PDI_BASE (LTQ_SWITCH_CORE_BASE + 4 * 0x40)
++#define LTQ_SWITCH_MAC_PDI_0_BASE (LTQ_SWITCH_CORE_BASE + 4 * 0x900)
++#define LTQ_SWITCH_MAC_PDI_X_BASE(x) (LTQ_SWITCH_MAC_PDI_0_BASE + x * 0x30)
++#define LTQ_SWITCH_TOPLEVEL_BASE (LTQ_SWITCH_BASE + 4 * 0xC40)
++#define LTQ_SWITCH_MDIO_PDI_BASE (LTQ_SWITCH_TOPLEVEL_BASE)
++#define LTQ_SWITCH_MII_PDI_BASE (LTQ_SWITCH_TOPLEVEL_BASE + 4 * 0x36)
++#define LTQ_SWITCH_PMAC_PDI_BASE (LTQ_SWITCH_TOPLEVEL_BASE + 4 * 0x82)
++
++#define LTQ_ETHSW_MAC_CTRL0_PADEN (1 << 8)
++#define LTQ_ETHSW_MAC_CTRL0_FCS (1 << 7)
++#define LTQ_ETHSW_MAC_CTRL1_SHORTPRE (1 << 8)
++#define LTQ_ETHSW_MAC_CTRL2_MLEN (1 << 3)
++#define LTQ_ETHSW_MAC_CTRL2_LCHKL (1 << 2)
++#define LTQ_ETHSW_MAC_CTRL2_LCHKS_DIS 0
++#define LTQ_ETHSW_MAC_CTRL2_LCHKS_UNTAG 1
++#define LTQ_ETHSW_MAC_CTRL2_LCHKS_TAG 2
++#define LTQ_ETHSW_MAC_CTRL6_RBUF_DLY_WP_SHIFT 9
++#define LTQ_ETHSW_MAC_CTRL6_RXBUF_BYPASS (1 << 6)
++#define LTQ_ETHSW_GLOB_CTRL_SE (1 << 15)
++#define LTQ_ETHSW_MDC_CFG1_MCEN (1 << 8)
++#define LTQ_ETHSW_PMAC_HD_CTL_FC (1 << 10)
++#define LTQ_ETHSW_PMAC_HD_CTL_RC (1 << 4)
++#define LTQ_ETHSW_PMAC_HD_CTL_AC (1 << 2)
++#define ADVERTIZE_MPD (1 << 10)
++
++#define MDIO_DEVAD_NONE (-1)
++
++#define LTQ_ETH_RX_BUFFER_CNT PKTBUFSRX
++
++#define LTQ_MDIO_DRV_NAME "ltq-mdio"
++#define LTQ_ETH_DRV_NAME "ltq-eth"
++
++#define LTQ_ETHSW_MAX_GMAC 1
++#define LTQ_ETHSW_PMAC 1
++
++#define ltq_setbits(a, set) \
++ ltq_w32(ltq_r32(a) | (set), a)
++
++enum ltq_reset_modules {
++ LTQ_RESET_CORE,
++ LTQ_RESET_DMA,
++ LTQ_RESET_ETH,
++ LTQ_RESET_PHY,
++ LTQ_RESET_HARD,
++ LTQ_RESET_SOFT,
++};
++
++static inline void
++dbg_ltq_writel(void *a, unsigned int b)
++{
++ ltq_w32(b, a);
++}
++
++int ltq_reset_once(enum ltq_reset_modules module, ulong usec);
++
++struct ltq_ethsw_mac_pdi_x_regs {
++ u32 pstat; /* Port status */
++ u32 pisr; /* Interrupt status */
++ u32 pier; /* Interrupt enable */
++ u32 ctrl_0; /* Control 0 */
++ u32 ctrl_1; /* Control 1 */
++ u32 ctrl_2; /* Control 2 */
++ u32 ctrl_3; /* Control 3 */
++ u32 ctrl_4; /* Control 4 */
++ u32 ctrl_5; /* Control 5 */
++ u32 ctrl_6; /* Control 6 */
++ u32 bufst; /* TX/RX buffer control */
++ u32 testen; /* Test enable */
++};
++
++struct ltq_ethsw_mac_pdi_regs {
++ struct ltq_ethsw_mac_pdi_x_regs mac[12];
++};
++
++struct ltq_ethsw_mdio_pdi_regs {
++ u32 glob_ctrl; /* Global control 0 */
++ u32 rsvd0[7];
++ u32 mdio_ctrl; /* MDIO control */
++ u32 mdio_read; /* MDIO read data */
++ u32 mdio_write; /* MDIO write data */
++ u32 mdc_cfg_0; /* MDC clock configuration 0 */
++ u32 mdc_cfg_1; /* MDC clock configuration 1 */
++ u32 rsvd[3];
++ u32 phy_addr_5; /* PHY address port 5 */
++ u32 phy_addr_4; /* PHY address port 4 */
++ u32 phy_addr_3; /* PHY address port 3 */
++ u32 phy_addr_2; /* PHY address port 2 */
++ u32 phy_addr_1; /* PHY address port 1 */
++ u32 phy_addr_0; /* PHY address port 0 */
++ u32 mdio_stat_0; /* MDIO PHY polling status port 0 */
++ u32 mdio_stat_1; /* MDIO PHY polling status port 1 */
++ u32 mdio_stat_2; /* MDIO PHY polling status port 2 */
++ u32 mdio_stat_3; /* MDIO PHY polling status port 3 */
++ u32 mdio_stat_4; /* MDIO PHY polling status port 4 */
++ u32 mdio_stat_5; /* MDIO PHY polling status port 5 */
++};
++
++struct ltq_ethsw_mii_pdi_regs {
++ u32 mii_cfg0; /* xMII port 0 configuration */
++ u32 pcdu0; /* Port 0 clock delay configuration */
++ u32 mii_cfg1; /* xMII port 1 configuration */
++ u32 pcdu1; /* Port 1 clock delay configuration */
++ u32 mii_cfg2; /* xMII port 2 configuration */
++ u32 rsvd0;
++ u32 mii_cfg3; /* xMII port 3 configuration */
++ u32 rsvd1;
++ u32 mii_cfg4; /* xMII port 4 configuration */
++ u32 rsvd2;
++ u32 mii_cfg5; /* xMII port 5 configuration */
++ u32 pcdu5; /* Port 5 clock delay configuration */
++};
++
++struct ltq_ethsw_pmac_pdi_regs {
++ u32 hd_ctl; /* PMAC header control */
++ u32 tl; /* PMAC type/length */
++ u32 sa1; /* PMAC source address 1 */
++ u32 sa2; /* PMAC source address 2 */
++ u32 sa3; /* PMAC source address 3 */
++ u32 da1; /* PMAC destination address 1 */
++ u32 da2; /* PMAC destination address 2 */
++ u32 da3; /* PMAC destination address 3 */
++ u32 vlan; /* PMAC VLAN */
++ u32 rx_ipg; /* PMAC interpacket gap in RX direction */
++ u32 st_etype; /* PMAC special tag ethertype */
++ u32 ewan; /* PMAC ethernet WAN group */
++};
++
++struct ltq_mdio_phy_addr_reg {
++ union {
++ struct {
++ unsigned rsvd:1;
++ unsigned lnkst:2; /* Link status control */
++ unsigned speed:2; /* Speed control */
++ unsigned fdup:2; /* Full duplex control */
++ unsigned fcontx:2; /* Flow control mode TX */
++ unsigned fconrx:2; /* Flow control mode RX */
++ unsigned addr:5; /* PHY address */
++ } bits;
++ u16 val;
++ };
++};
++
++enum ltq_mdio_phy_addr_lnkst {
++ LTQ_MDIO_PHY_ADDR_LNKST_AUTO = 0,
++ LTQ_MDIO_PHY_ADDR_LNKST_UP = 1,
++ LTQ_MDIO_PHY_ADDR_LNKST_DOWN = 2,
++};
++
++enum ltq_mdio_phy_addr_speed {
++ LTQ_MDIO_PHY_ADDR_SPEED_M10 = 0,
++ LTQ_MDIO_PHY_ADDR_SPEED_M100 = 1,
++ LTQ_MDIO_PHY_ADDR_SPEED_G1 = 2,
++ LTQ_MDIO_PHY_ADDR_SPEED_AUTO = 3,
++};
++
++enum ltq_mdio_phy_addr_fdup {
++ LTQ_MDIO_PHY_ADDR_FDUP_AUTO = 0,
++ LTQ_MDIO_PHY_ADDR_FDUP_ENABLE = 1,
++ LTQ_MDIO_PHY_ADDR_FDUP_DISABLE = 3,
++};
++
++enum ltq_mdio_phy_addr_fcon {
++ LTQ_MDIO_PHY_ADDR_FCON_AUTO = 0,
++ LTQ_MDIO_PHY_ADDR_FCON_ENABLE = 1,
++ LTQ_MDIO_PHY_ADDR_FCON_DISABLE = 3,
++};
++
++struct ltq_mii_mii_cfg_reg {
++ union {
++ struct {
++ unsigned res:1; /* Hardware reset */
++ unsigned en:1; /* xMII interface enable */
++ unsigned isol:1; /* xMII interface isolate */
++ unsigned ldclkdis:1; /* Link down clock disable */
++ unsigned rsvd:1;
++ unsigned crs:2; /* CRS sensitivity config */
++ unsigned rgmii_ibs:1; /* RGMII In Band status */
++ unsigned rmii:1; /* RMII ref clock direction */
++ unsigned miirate:3; /* xMII interface clock rate */
++ unsigned miimode:4; /* xMII interface mode */
++ } bits;
++ u16 val;
++ };
++};
++
++enum ltq_mii_mii_cfg_miirate {
++ LTQ_MII_MII_CFG_MIIRATE_M2P5 = 0,
++ LTQ_MII_MII_CFG_MIIRATE_M25 = 1,
++ LTQ_MII_MII_CFG_MIIRATE_M125 = 2,
++ LTQ_MII_MII_CFG_MIIRATE_M50 = 3,
++ LTQ_MII_MII_CFG_MIIRATE_AUTO = 4,
++};
++
++enum ltq_mii_mii_cfg_miimode {
++ LTQ_MII_MII_CFG_MIIMODE_MIIP = 0,
++ LTQ_MII_MII_CFG_MIIMODE_MIIM = 1,
++ LTQ_MII_MII_CFG_MIIMODE_RMIIP = 2,
++ LTQ_MII_MII_CFG_MIIMODE_RMIIM = 3,
++ LTQ_MII_MII_CFG_MIIMODE_RGMII = 4,
++};
++
++struct ltq_eth_priv {
++ struct ltq_dma_device *dma_dev;
++ struct mii_dev *bus;
++ struct eth_device *dev;
++ struct phy_device *phymap[LTQ_ETHSW_MAX_GMAC];
++ int rx_num;
++};
++
++enum ltq_mdio_mbusy {
++ LTQ_MDIO_MBUSY_IDLE = 0,
++ LTQ_MDIO_MBUSY_BUSY = 1,
++};
++
++enum ltq_mdio_op {
++ LTQ_MDIO_OP_WRITE = 1,
++ LTQ_MDIO_OP_READ = 2,
++};
++
++struct ltq_mdio_access {
++ union {
++ struct {
++ unsigned rsvd:3;
++ unsigned mbusy:1;
++ unsigned op:2;
++ unsigned phyad:5;
++ unsigned regad:5;
++ } bits;
++ u16 val;
++ };
++};
++
++enum LTQ_ETH_PORT_FLAGS {
++ LTQ_ETH_PORT_NONE = 0,
++ LTQ_ETH_PORT_PHY = 1,
++ LTQ_ETH_PORT_SWITCH = (1 << 1),
++ LTQ_ETH_PORT_MAC = (1 << 2),
++};
++
++struct ltq_eth_port_config {
++ u8 num;
++ u8 phy_addr;
++ u16 flags;
++ phy_interface_t phy_if;
++};
++
++struct ltq_eth_board_config {
++ const struct ltq_eth_port_config *ports;
++ int num_ports;
++};
++
++static const struct ltq_eth_port_config eth_port_config[] = {
++ /* GMAC0: external Lantiq PEF7071 10/100/1000 PHY for LAN port 0 */
++ { 0, 0x0, LTQ_ETH_PORT_PHY, PHY_INTERFACE_MODE_RGMII },
++ /* GMAC1: external Lantiq PEF7071 10/100/1000 PHY for LAN port 1 */
++ { 1, 0x1, LTQ_ETH_PORT_PHY, PHY_INTERFACE_MODE_RGMII },
++};
++
++static const struct ltq_eth_board_config board_config = {
++ .ports = eth_port_config,
++ .num_ports = ARRAY_SIZE(eth_port_config),
++};
++
++static struct ltq_ethsw_mac_pdi_regs *ltq_ethsw_mac_pdi_regs =
++ (struct ltq_ethsw_mac_pdi_regs *) CKSEG1ADDR(LTQ_SWITCH_MAC_PDI_0_BASE);
++
++static struct ltq_ethsw_mdio_pdi_regs *ltq_ethsw_mdio_pdi_regs =
++ (struct ltq_ethsw_mdio_pdi_regs *) CKSEG1ADDR(LTQ_SWITCH_MDIO_PDI_BASE);
++
++static struct ltq_ethsw_mii_pdi_regs *ltq_ethsw_mii_pdi_regs =
++ (struct ltq_ethsw_mii_pdi_regs *) CKSEG1ADDR(LTQ_SWITCH_MII_PDI_BASE);
++
++static struct ltq_ethsw_pmac_pdi_regs *ltq_ethsw_pmac_pdi_regs =
++ (struct ltq_ethsw_pmac_pdi_regs *) CKSEG1ADDR(LTQ_SWITCH_PMAC_PDI_BASE);
++
++
++#define MAX_DMA_CHAN 0x8
++#define MAX_DMA_CRC_LEN 0x4
++#define MAX_DMA_DATA_LEN 0x600
++
++/* use 2 static channels for TX/RX
++ depending on the SoC we need to use different DMA channels for ethernet */
++#define LTQ_ETOP_TX_CHANNEL 1
++#define LTQ_ETOP_RX_CHANNEL 0
++
++#define IS_TX(x) (x == LTQ_ETOP_TX_CHANNEL)
++#define IS_RX(x) (x == LTQ_ETOP_RX_CHANNEL)
++
++#define DRV_VERSION "1.0"
++
++static void __iomem *ltq_vrx200_membase;
++
++struct ltq_vrx200_chan {
++ int idx;
++ int tx_free;
++ struct net_device *netdev;
++ struct napi_struct napi;
++ struct ltq_dma_channel dma;
++ struct sk_buff *skb[LTQ_DESC_NUM];
++};
++
++struct ltq_vrx200_priv {
++ struct net_device *netdev;
++ struct ltq_eth_data *pldata;
++ struct resource *res;
++
++ struct mii_bus *mii_bus;
++ struct phy_device *phydev;
++
++ struct ltq_vrx200_chan ch[MAX_DMA_CHAN];
++ int tx_free[MAX_DMA_CHAN >> 1];
++
++ spinlock_t lock;
++
++ struct clk *clk_ppe;
++};
++
++static int ltq_vrx200_mdio_wr(struct mii_bus *bus, int phy_addr,
++ int phy_reg, u16 phy_data);
++
++static int
++ltq_vrx200_alloc_skb(struct ltq_vrx200_chan *ch)
++{
++ 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,
++ ch->skb[ch->dma.desc]->data, MAX_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) |
++ MAX_DMA_DATA_LEN;
++ skb_reserve(ch->skb[ch->dma.desc], NET_IP_ALIGN);
++ return 0;
++}
++
++static void
++ltq_vrx200_hw_receive(struct ltq_vrx200_chan *ch)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(ch->netdev);
++ 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) - MAX_DMA_CRC_LEN;
++ unsigned long flags;
++
++ spin_lock_irqsave(&priv->lock, flags);
++ if (ltq_vrx200_alloc_skb(ch)) {
++ netdev_err(ch->netdev,
++ "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->lock, flags);
++
++ skb_put(skb, len);
++ skb->dev = ch->netdev;
++ skb->protocol = eth_type_trans(skb, ch->netdev);
++ netif_receive_skb(skb);
++}
++
++static int
++ltq_vrx200_poll_rx(struct napi_struct *napi, int budget)
++{
++ struct ltq_vrx200_chan *ch = container_of(napi,
++ struct ltq_vrx200_chan, napi);
++ struct ltq_vrx200_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];
++
++ if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) == LTQ_DMA_C) {
++ ltq_vrx200_hw_receive(ch);
++ rx++;
++ } else {
++ complete = 1;
++ }
++ }
++ 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;
++}
++
++static int
++ltq_vrx200_poll_tx(struct napi_struct *napi, int budget)
++{
++ struct ltq_vrx200_chan *ch =
++ container_of(napi, struct ltq_vrx200_chan, napi);
++ struct ltq_vrx200_priv *priv = netdev_priv(ch->netdev);
++ struct netdev_queue *txq =
++ netdev_get_tx_queue(ch->netdev, ch->idx >> 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) {
++ 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->lock, flags);
++
++ 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;
++}
++
++static irqreturn_t
++ltq_vrx200_dma_irq(int irq, void *_priv)
++{
++ struct ltq_vrx200_priv *priv = _priv;
++ int ch = irq - LTQ_DMA_ETOP;
++
++ napi_schedule(&priv->ch[ch].napi);
++ return IRQ_HANDLED;
++}
++
++static void
++ltq_vrx200_free_channel(struct net_device *dev, struct ltq_vrx200_chan *ch)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ ltq_dma_free(&ch->dma);
++ if (ch->dma.irq)
++ free_irq(ch->dma.irq, priv);
++ if (IS_RX(ch->idx)) {
++ int desc;
++ for (desc = 0; desc < LTQ_DESC_NUM; desc++)
++ dev_kfree_skb_any(ch->skb[ch->dma.desc]);
++ }
++}
++
++static void
++ltq_vrx200_hw_exit(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int i;
++
++ clk_disable(priv->clk_ppe);
++
++ for (i = 0; i < MAX_DMA_CHAN; i++)
++ if (IS_TX(i) || IS_RX(i))
++ ltq_vrx200_free_channel(dev, &priv->ch[i]);
++}
++
++static void *ltq_eth_phy_addr_reg(int num)
++{
++ switch (num) {
++ case 0:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_0;
++ case 1:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_1;
++ case 2:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_2;
++ case 3:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_3;
++ case 4:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_4;
++ case 5:
++ return &ltq_ethsw_mdio_pdi_regs->phy_addr_5;
++ }
++
++ return NULL;
++}
++
++static void *ltq_eth_mii_cfg_reg(int num)
++{
++ switch (num) {
++ case 0:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg0;
++ case 1:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg1;
++ case 2:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg2;
++ case 3:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg3;
++ case 4:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg4;
++ case 5:
++ return &ltq_ethsw_mii_pdi_regs->mii_cfg5;
++ }
++
++ return NULL;
++}
++
++static void ltq_eth_gmac_update(struct phy_device *phydev, int num)
++{
++ struct ltq_mdio_phy_addr_reg phy_addr_reg;
++ struct ltq_mii_mii_cfg_reg mii_cfg_reg;
++ void *phy_addr = ltq_eth_phy_addr_reg(num);
++ void *mii_cfg = ltq_eth_mii_cfg_reg(num);
++
++ phy_addr_reg.val = ltq_r32(phy_addr);
++ mii_cfg_reg.val = ltq_r32(mii_cfg);
++
++ phy_addr_reg.bits.addr = phydev->addr;
++
++ if (phydev->link)
++ phy_addr_reg.bits.lnkst = LTQ_MDIO_PHY_ADDR_LNKST_UP;
++ else
++ phy_addr_reg.bits.lnkst = LTQ_MDIO_PHY_ADDR_LNKST_DOWN;
++
++ switch (phydev->speed) {
++ case SPEED_1000:
++ phy_addr_reg.bits.speed = LTQ_MDIO_PHY_ADDR_SPEED_G1;
++ mii_cfg_reg.bits.miirate = LTQ_MII_MII_CFG_MIIRATE_M125;
++ break;
++ case SPEED_100:
++ phy_addr_reg.bits.speed = LTQ_MDIO_PHY_ADDR_SPEED_M100;
++ switch (mii_cfg_reg.bits.miimode) {
++ case LTQ_MII_MII_CFG_MIIMODE_RMIIM:
++ case LTQ_MII_MII_CFG_MIIMODE_RMIIP:
++ mii_cfg_reg.bits.miirate = LTQ_MII_MII_CFG_MIIRATE_M50;
++ break;
++ default:
++ mii_cfg_reg.bits.miirate = LTQ_MII_MII_CFG_MIIRATE_M25;
++ break;
++ }
++ break;
++ default:
++ phy_addr_reg.bits.speed = LTQ_MDIO_PHY_ADDR_SPEED_M10;
++ mii_cfg_reg.bits.miirate = LTQ_MII_MII_CFG_MIIRATE_M2P5;
++ break;
++ }
++
++ if (phydev->duplex == DUPLEX_FULL)
++ phy_addr_reg.bits.fdup = LTQ_MDIO_PHY_ADDR_FDUP_ENABLE;
++ else
++ phy_addr_reg.bits.fdup = LTQ_MDIO_PHY_ADDR_FDUP_DISABLE;
++
++ dbg_ltq_writel(phy_addr, phy_addr_reg.val);
++ dbg_ltq_writel(mii_cfg, mii_cfg_reg.val);
++ udelay(1);
++}
++
++
++static void ltq_eth_port_config(struct ltq_vrx200_priv *priv,
++ const struct ltq_eth_port_config *port)
++{
++ struct ltq_mii_mii_cfg_reg mii_cfg_reg;
++ void *mii_cfg = ltq_eth_mii_cfg_reg(port->num);
++ int setup_gpio = 0;
++
++ mii_cfg_reg.val = ltq_r32(mii_cfg);
++
++
++ switch (port->num) {
++ case 0: /* xMII0 */
++ case 1: /* xMII1 */
++ switch (port->phy_if) {
++ case PHY_INTERFACE_MODE_MII:
++ if (port->flags & LTQ_ETH_PORT_PHY)
++ /* MII MAC mode, connected to external PHY */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_MIIM;
++ else
++ /* MII PHY mode, connected to external MAC */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_MIIP;
++ setup_gpio = 1;
++ break;
++ case PHY_INTERFACE_MODE_RMII:
++ if (port->flags & LTQ_ETH_PORT_PHY)
++ /* RMII MAC mode, connected to external PHY */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_RMIIM;
++ else
++ /* RMII PHY mode, connected to external MAC */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_RMIIP;
++ setup_gpio = 1;
++ break;
++ case PHY_INTERFACE_MODE_RGMII:
++ /* RGMII MAC mode, connected to external PHY */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_RGMII;
++ setup_gpio = 1;
++ 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 */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_MIIM;
++ setup_gpio = 1;
++ 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 */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_MIIM;
++ setup_gpio = 1;
++ break;
++ case PHY_INTERFACE_MODE_RGMII:
++ /* RGMII MAC mode, connected to external PHY */
++ mii_cfg_reg.bits.miimode =
++ LTQ_MII_MII_CFG_MIIMODE_RGMII;
++ setup_gpio = 1;
++ break;
++ default:
++ break;
++ }
++ break;
++ default:
++ break;
++ }
++
++ /* Enable MII interface */
++ mii_cfg_reg.bits.en = port->flags ? 1 : 0;
++ dbg_ltq_writel(mii_cfg, mii_cfg_reg.val);
++
++}
++
++static void ltq_eth_gmac_init(int num)
++{
++ struct ltq_mdio_phy_addr_reg phy_addr_reg;
++ struct ltq_mii_mii_cfg_reg mii_cfg_reg;
++ void *phy_addr = ltq_eth_phy_addr_reg(num);
++ void *mii_cfg = ltq_eth_mii_cfg_reg(num);
++ struct ltq_ethsw_mac_pdi_x_regs *mac_pdi_regs;
++
++ mac_pdi_regs = &ltq_ethsw_mac_pdi_regs->mac[num];
++
++ /* Reset PHY status to link down */
++ phy_addr_reg.val = ltq_r32(phy_addr);
++ phy_addr_reg.bits.addr = num;
++ phy_addr_reg.bits.lnkst = LTQ_MDIO_PHY_ADDR_LNKST_DOWN;
++ phy_addr_reg.bits.speed = LTQ_MDIO_PHY_ADDR_SPEED_M10;
++ phy_addr_reg.bits.fdup = LTQ_MDIO_PHY_ADDR_FDUP_DISABLE;
++ dbg_ltq_writel(phy_addr, phy_addr_reg.val);
++
++ /* Reset and disable MII interface */
++ mii_cfg_reg.val = ltq_r32(mii_cfg);
++ mii_cfg_reg.bits.en = 0;
++ mii_cfg_reg.bits.res = 1;
++ mii_cfg_reg.bits.miirate = LTQ_MII_MII_CFG_MIIRATE_M2P5;
++ dbg_ltq_writel(mii_cfg, mii_cfg_reg.val);
++
++ /*
++ * Enable padding of short frames, enable frame checksum generation
++ * in transmit direction
++ */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_0, LTQ_ETHSW_MAC_CTRL0_PADEN |
++ LTQ_ETHSW_MAC_CTRL0_FCS);
++
++ /* Set inter packet gap size to 12 bytes */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_1, 12);
++
++ /*
++ * Configure frame length checks:
++ * - allow jumbo frames
++ * - enable long length check
++ * - enable short length without VLAN tags
++ */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_2, LTQ_ETHSW_MAC_CTRL2_MLEN |
++ LTQ_ETHSW_MAC_CTRL2_LCHKL |
++ LTQ_ETHSW_MAC_CTRL2_LCHKS_UNTAG);
++}
++
++
++static void ltq_eth_pmac_init(void)
++{
++ struct ltq_ethsw_mac_pdi_x_regs *mac_pdi_regs;
++
++ mac_pdi_regs = &ltq_ethsw_mac_pdi_regs->mac[LTQ_ETHSW_PMAC];
++
++ /*
++ * Enable padding of short frames, enable frame checksum generation
++ * in transmit direction
++ */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_0, LTQ_ETHSW_MAC_CTRL0_PADEN |
++ LTQ_ETHSW_MAC_CTRL0_FCS);
++
++ /*
++ * Configure frame length checks:
++ * - allow jumbo frames
++ * - enable long length check
++ * - enable short length without VLAN tags
++ */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_2, LTQ_ETHSW_MAC_CTRL2_MLEN |
++ LTQ_ETHSW_MAC_CTRL2_LCHKL |
++ LTQ_ETHSW_MAC_CTRL2_LCHKS_UNTAG);
++
++ /*
++ * Apply workaround for buffer congestion:
++ * - shorten preambel to 1 byte
++ * - set minimum inter packet gap size to 7 bytes
++ * - enable receive buffer bypass mode
++ */
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_1, LTQ_ETHSW_MAC_CTRL1_SHORTPRE | 7);
++ dbg_ltq_writel(&mac_pdi_regs->ctrl_6,
++ (6 << LTQ_ETHSW_MAC_CTRL6_RBUF_DLY_WP_SHIFT) |
++ LTQ_ETHSW_MAC_CTRL6_RXBUF_BYPASS);
++
++ /* Set request assertion threshold to 8, IPG counter to 11 */
++ dbg_ltq_writel(&ltq_ethsw_pmac_pdi_regs->rx_ipg, 0x8B);
++
++ /*
++ * Configure frame header control:
++ * - enable reaction on pause frames (flow control)
++ * - remove CRC for packets from PMAC to DMA
++ * - add CRC for packets from DMA to PMAC
++ */
++ dbg_ltq_writel(&ltq_ethsw_pmac_pdi_regs->hd_ctl, LTQ_ETHSW_PMAC_HD_CTL_FC |
++ /*LTQ_ETHSW_PMAC_HD_CTL_RC | */LTQ_ETHSW_PMAC_HD_CTL_AC);
++}
++
++static int
++ltq_vrx200_hw_init(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int err = 0;
++ int i;
++
++ netdev_info(dev, "setting up dma\n");
++ ltq_dma_init_port(DMA_PORT_ETOP);
++
++ netdev_info(dev, "setting up pmu\n");
++ clk_enable(priv->clk_ppe);
++
++ /* Reset ethernet and switch subsystems */
++ netdev_info(dev, "reset core\n");
++ ltq_reset_once(BIT(8), 10);
++
++ /* Enable switch macro */
++ ltq_setbits(&ltq_ethsw_mdio_pdi_regs->glob_ctrl,
++ LTQ_ETHSW_GLOB_CTRL_SE);
++
++ /* Disable MDIO auto-polling for all ports */
++ dbg_ltq_writel(&ltq_ethsw_mdio_pdi_regs->mdc_cfg_0, 0);
++
++ /*
++ * Enable and set MDIO management clock to 2.5 MHz. This is the
++ * maximum clock for FE PHYs.
++ * Formula for clock is:
++ *
++ * 50 MHz
++ * x = ----------- - 1
++ * 2 * f_MDC
++ */
++ dbg_ltq_writel(&ltq_ethsw_mdio_pdi_regs->mdc_cfg_1,
++ LTQ_ETHSW_MDC_CFG1_MCEN | 9);
++
++ /* Init MAC connected to CPU */
++ ltq_eth_pmac_init();
++
++ /* Init MACs connected to external MII interfaces */
++ for (i = 0; i < LTQ_ETHSW_MAX_GMAC; i++)
++ ltq_eth_gmac_init(i);
++
++ for (i = 0; i < MAX_DMA_CHAN && !err; i++) {
++ int irq = LTQ_DMA_ETOP + i;
++ struct ltq_vrx200_chan *ch = &priv->ch[i];
++
++ ch->idx = ch->dma.nr = i;
++
++ if (IS_TX(i)) {
++ ltq_dma_alloc_tx(&ch->dma);
++ err = request_irq(irq, ltq_vrx200_dma_irq, IRQF_DISABLED,
++ "vrx200_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_vrx200_alloc_skb(ch))
++ err = -ENOMEM;
++ ch->dma.desc = 0;
++ err = request_irq(irq, ltq_vrx200_dma_irq, IRQF_DISABLED,
++ "vrx200_rx", priv);
++ }
++ if (!err)
++ ch->dma.irq = irq;
++ }
++ for (i = 0; i < board_config.num_ports; i++)
++ ltq_eth_port_config(priv, &board_config.ports[i]);
++ return err;
++}
++
++static void
++ltq_vrx200_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
++{
++ strcpy(info->driver, "Lantiq ETOP");
++ strcpy(info->bus_info, "internal");
++ strcpy(info->version, DRV_VERSION);
++}
++
++static int
++ltq_vrx200_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ return phy_ethtool_gset(priv->phydev, cmd);
++}
++
++static int
++ltq_vrx200_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ return phy_ethtool_sset(priv->phydev, cmd);
++}
++
++static int
++ltq_vrx200_nway_reset(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ return phy_start_aneg(priv->phydev);
++}
++
++static const struct ethtool_ops ltq_vrx200_ethtool_ops = {
++ .get_drvinfo = ltq_vrx200_get_drvinfo,
++ .get_settings = ltq_vrx200_get_settings,
++ .set_settings = ltq_vrx200_set_settings,
++ .nway_reset = ltq_vrx200_nway_reset,
++};
++
++static inline int ltq_mdio_poll(struct mii_bus *bus)
++{
++ struct ltq_mdio_access acc;
++ unsigned cnt = 10000;
++
++ while (likely(cnt--)) {
++ acc.val = ltq_r32(&ltq_ethsw_mdio_pdi_regs->mdio_ctrl);
++ if (!acc.bits.mbusy)
++ return 0;
++ }
++
++ return 1;
++}
++
++static int
++ltq_vrx200_mdio_wr(struct mii_bus *bus, int addr, int regnum, u16 val)
++{
++ struct ltq_mdio_access acc;
++ int ret;
++
++ acc.val = 0;
++ acc.bits.mbusy = LTQ_MDIO_MBUSY_BUSY;
++ acc.bits.op = LTQ_MDIO_OP_WRITE;
++ acc.bits.phyad = addr;
++ acc.bits.regad = regnum;
++
++ ret = ltq_mdio_poll(bus);
++ if (ret)
++ return ret;
++
++ dbg_ltq_writel(&ltq_ethsw_mdio_pdi_regs->mdio_write, val);
++ dbg_ltq_writel(&ltq_ethsw_mdio_pdi_regs->mdio_ctrl, acc.val);
++
++ return 0;
++}
++
++static int
++ltq_vrx200_mdio_rd(struct mii_bus *bus, int addr, int regnum)
++{
++ struct ltq_mdio_access acc;
++ int ret;
++
++ acc.val = 0;
++ acc.bits.mbusy = LTQ_MDIO_MBUSY_BUSY;
++ acc.bits.op = LTQ_MDIO_OP_READ;
++ acc.bits.phyad = addr;
++ acc.bits.regad = regnum;
++
++ ret = ltq_mdio_poll(bus);
++ if (ret)
++ goto timeout;
++
++ dbg_ltq_writel(&ltq_ethsw_mdio_pdi_regs->mdio_ctrl, acc.val);
++
++ ret = ltq_mdio_poll(bus);
++ if (ret)
++ goto timeout;
++
++ ret = ltq_r32(&ltq_ethsw_mdio_pdi_regs->mdio_read);
++
++ return ret;
++timeout:
++ return -1;
++}
++
++static void
++ltq_vrx200_mdio_link(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ ltq_eth_gmac_update(priv->phydev, 0);
++}
++
++static int
++ltq_vrx200_mdio_probe(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ struct phy_device *phydev = NULL;
++ int val;
++
++ phydev = priv->mii_bus->phy_map[0];
++
++ if (!phydev) {
++ netdev_err(dev, "no PHY found\n");
++ return -ENODEV;
++ }
++
++ phydev = phy_connect(dev, dev_name(&phydev->dev), &ltq_vrx200_mdio_link,
++ 0, 0);
++
++ 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;
++ priv->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);
++
++ val = ltq_vrx200_mdio_rd(priv->mii_bus, MDIO_DEVAD_NONE, MII_CTRL1000);
++ val |= ADVERTIZE_MPD;
++ ltq_vrx200_mdio_wr(priv->mii_bus, MDIO_DEVAD_NONE, MII_CTRL1000, val);
++ ltq_vrx200_mdio_wr(priv->mii_bus, 0, 0, 0x1040);
++
++ phy_start_aneg(phydev);
++
++ return 0;
++}
++
++static int
++ltq_vrx200_mdio_init(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int i;
++ int err;
++
++ priv->mii_bus = mdiobus_alloc();
++ if (!priv->mii_bus) {
++ netdev_err(dev, "failed to allocate mii bus\n");
++ err = -ENOMEM;
++ goto err_out;
++ }
++
++ priv->mii_bus->priv = dev;
++ priv->mii_bus->read = ltq_vrx200_mdio_rd;
++ priv->mii_bus->write = ltq_vrx200_mdio_wr;
++ priv->mii_bus->name = "ltq_mii";
++ snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%x", 0);
++ priv->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
++ if (!priv->mii_bus->irq) {
++ err = -ENOMEM;
++ goto err_out_free_mdiobus;
++ }
++
++ for (i = 0; i < PHY_MAX_ADDR; ++i)
++ priv->mii_bus->irq[i] = PHY_POLL;
++
++ if (mdiobus_register(priv->mii_bus)) {
++ err = -ENXIO;
++ goto err_out_free_mdio_irq;
++ }
++
++ if (ltq_vrx200_mdio_probe(dev)) {
++ err = -ENXIO;
++ goto err_out_unregister_bus;
++ }
++ return 0;
++
++err_out_unregister_bus:
++ mdiobus_unregister(priv->mii_bus);
++err_out_free_mdio_irq:
++ kfree(priv->mii_bus->irq);
++err_out_free_mdiobus:
++ mdiobus_free(priv->mii_bus);
++err_out:
++ return err;
++}
++
++static void
++ltq_vrx200_mdio_cleanup(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ phy_disconnect(priv->phydev);
++ mdiobus_unregister(priv->mii_bus);
++ kfree(priv->mii_bus->irq);
++ mdiobus_free(priv->mii_bus);
++}
++
++void phy_dump(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int i;
++ for (i = 0; i < 0x1F; i++) {
++ unsigned int val = ltq_vrx200_mdio_rd(priv->mii_bus, 0, i);
++ printk("%d %4X\n", i, val);
++ }
++}
++
++static int
++ltq_vrx200_open(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int i;
++ unsigned long flags;
++
++ for (i = 0; i < MAX_DMA_CHAN; i++) {
++ struct ltq_vrx200_chan *ch = &priv->ch[i];
++
++ if (!IS_TX(i) && (!IS_RX(i)))
++ continue;
++ napi_enable(&ch->napi);
++ spin_lock_irqsave(&priv->lock, flags);
++ ltq_dma_open(&ch->dma);
++ spin_unlock_irqrestore(&priv->lock, flags);
++ }
++ if (priv->phydev) {
++ phy_start(priv->phydev);
++ phy_dump(dev);
++ }
++ netif_tx_start_all_queues(dev);
++ return 0;
++}
++
++static int
++ltq_vrx200_stop(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ int i;
++ unsigned long flags;
++
++ netif_tx_stop_all_queues(dev);
++ if (priv->phydev)
++ phy_stop(priv->phydev);
++ for (i = 0; i < MAX_DMA_CHAN; i++) {
++ struct ltq_vrx200_chan *ch = &priv->ch[i];
++
++ if (!IS_RX(i) && !IS_TX(i))
++ continue;
++ napi_disable(&ch->napi);
++ spin_lock_irqsave(&priv->lock, flags);
++ ltq_dma_close(&ch->dma);
++ spin_unlock_irqrestore(&priv->lock, flags);
++ }
++ return 0;
++}
++
++static int
++ltq_vrx200_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_vrx200_priv *priv = netdev_priv(dev);
++ struct ltq_vrx200_chan *ch = &priv->ch[(queue << 1) | 1];
++ struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->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]) {
++ netdev_err(dev, "tx ring full\n");
++ netif_tx_stop_queue(txq);
++ return NETDEV_TX_BUSY;
++ }
++
++ /* 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->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->lock, flags);
++
++ if (ch->dma.desc_base[ch->dma.desc].ctl & LTQ_DMA_OWN)
++ netif_tx_stop_queue(txq);
++
++ return NETDEV_TX_OK;
++}
++
++static int
++ltq_vrx200_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++
++ /* TODO: mii-toll reports "No MII transceiver present!." ?!*/
++ return phy_mii_ioctl(priv->phydev, rq, cmd);
++}
++
++static u16
++ltq_vrx200_select_queue(struct net_device *dev, struct sk_buff *skb)
++{
++ /* we are currently only using the first queue */
++ return 0;
++}
++
++static int
++ltq_vrx200_init(struct net_device *dev)
++{
++ struct ltq_vrx200_priv *priv = netdev_priv(dev);
++ struct sockaddr mac;
++ int err;
++
++ ether_setup(dev);
++ dev->watchdog_timeo = 10 * HZ;
++
++ err = ltq_vrx200_hw_init(dev);
++ if (err)
++ goto err_hw;
++
++ memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
++ if (!is_valid_ether_addr(mac.sa_data)) {
++ pr_warn("vrx200: invalid MAC, using random\n");
++ random_ether_addr(mac.sa_data);
++ }
++ eth_mac_addr(dev, &mac);
++
++ if (!ltq_vrx200_mdio_init(dev))
++ dev->ethtool_ops = &ltq_vrx200_ethtool_ops;
++ else
++ pr_warn("vrx200: mdio probe failed\n");;
++ return 0;
++
++err_hw:
++ ltq_vrx200_hw_exit(dev);
++ return err;
++}
++
++static void
++ltq_vrx200_tx_timeout(struct net_device *dev)
++{
++ int err;
++
++ ltq_vrx200_hw_exit(dev);
++ err = ltq_vrx200_hw_init(dev);
++ if (err)
++ goto err_hw;
++ dev->trans_start = jiffies;
++ netif_wake_queue(dev);
++ return;
++
++err_hw:
++ ltq_vrx200_hw_exit(dev);
++ netdev_err(dev, "failed to restart vrx200 after TX timeout\n");
++}
++
++static const struct net_device_ops ltq_eth_netdev_ops = {
++ .ndo_open = ltq_vrx200_open,
++ .ndo_stop = ltq_vrx200_stop,
++ .ndo_start_xmit = ltq_vrx200_tx,
++ .ndo_change_mtu = eth_change_mtu,
++ .ndo_do_ioctl = ltq_vrx200_ioctl,
++ .ndo_set_mac_address = eth_mac_addr,
++ .ndo_validate_addr = eth_validate_addr,
++ .ndo_select_queue = ltq_vrx200_select_queue,
++ .ndo_init = ltq_vrx200_init,
++ .ndo_tx_timeout = ltq_vrx200_tx_timeout,
++};
++
++static int __devinit
++ltq_vrx200_probe(struct platform_device *pdev)
++{
++ struct net_device *dev;
++ struct ltq_vrx200_priv *priv;
++ struct resource *res;
++ int err;
++ int i;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!res) {
++ dev_err(&pdev->dev, "failed to get vrx200 resource\n");
++ err = -ENOENT;
++ goto err_out;
++ }
++
++ res = devm_request_mem_region(&pdev->dev, res->start,
++ resource_size(res), dev_name(&pdev->dev));
++ if (!res) {
++ dev_err(&pdev->dev, "failed to request vrx200 resource\n");
++ err = -EBUSY;
++ goto err_out;
++ }
++
++ ltq_vrx200_membase = devm_ioremap_nocache(&pdev->dev,
++ res->start, resource_size(res));
++ if (!ltq_vrx200_membase) {
++ dev_err(&pdev->dev, "failed to remap vrx200 engine %d\n",
++ pdev->id);
++ err = -ENOMEM;
++ goto err_out;
++ }
++
++ if (ltq_gpio_request(&pdev->dev, 42, 2, 1, "MDIO") ||
++ ltq_gpio_request(&pdev->dev, 43, 2, 1, "MDC")) {
++ dev_err(&pdev->dev, "failed to request MDIO gpios\n");
++ err = -EBUSY;
++ goto err_out;
++ }
++
++ dev = alloc_etherdev_mq(sizeof(struct ltq_vrx200_priv), 4);
++ strcpy(dev->name, "eth%d");
++ dev->netdev_ops = &ltq_eth_netdev_ops;
++ priv = netdev_priv(dev);
++ priv->res = res;
++ priv->pldata = dev_get_platdata(&pdev->dev);
++ priv->netdev = dev;
++
++ priv->clk_ppe = clk_get(&pdev->dev, NULL);
++ if (IS_ERR(priv->clk_ppe))
++ return PTR_ERR(priv->clk_ppe);
++
++ 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_vrx200_poll_tx, 8);
++ else if (IS_RX(i))
++ netif_napi_add(dev, &priv->ch[i].napi,
++ ltq_vrx200_poll_rx, 32);
++ priv->ch[i].netdev = dev;
++ }
++
++ err = register_netdev(dev);
++ if (err)
++ goto err_free;
++
++ platform_set_drvdata(pdev, dev);
++ return 0;
++
++err_free:
++ kfree(dev);
++err_out:
++ return err;
++}
++
++static int __devexit
++ltq_vrx200_remove(struct platform_device *pdev)
++{
++ struct net_device *dev = platform_get_drvdata(pdev);
++
++ if (dev) {
++ netif_tx_stop_all_queues(dev);
++ ltq_vrx200_hw_exit(dev);
++ ltq_vrx200_mdio_cleanup(dev);
++ unregister_netdev(dev);
++ }
++ return 0;
++}
++
++static struct platform_driver ltq_mii_driver = {
++ .probe = ltq_vrx200_probe,
++ .remove = __devexit_p(ltq_vrx200_remove),
++ .driver = {
++ .name = "ltq_vrx200",
++ .owner = THIS_MODULE,
++ },
++};
++
++module_platform_driver(ltq_mii_driver);
++
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_DESCRIPTION("Lantiq SoC ETOP");
++MODULE_LICENSE("GPL");
+--
+1.7.7.1
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 21:11:20 +0000