/* * ar8216.c: AR8216 switch driver * * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * 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. */ #include <linux/if.h> #include <linux/module.h> #include <linux/init.h> #include <linux/list.h> #include <linux/if_ether.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/bitops.h> #include <net/genetlink.h> #include <linux/switch.h> #include <linux/delay.h> #include <linux/phy.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include "ar8216.h" /* size of the vlan table */ #define AR8X16_MAX_VLANS 128 #define AR8X16_PROBE_RETRIES 10 struct ar8216_priv { struct switch_dev dev; struct phy_device *phy; u32 (*read)(struct ar8216_priv *priv, int reg); void (*write)(struct ar8216_priv *priv, int reg, u32 val); const struct net_device_ops *ndo_old; struct net_device_ops ndo; struct mutex reg_mutex; int chip; bool initialized; bool port4_phy; char buf[80]; /* all fields below are cleared on reset */ bool vlan; u16 vlan_id[AR8X16_MAX_VLANS]; u8 vlan_table[AR8X16_MAX_VLANS]; u8 vlan_tagged; u16 pvid[AR8216_NUM_PORTS]; }; #define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev) static inline void split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page) { regaddr >>= 1; *r1 = regaddr & 0x1e; regaddr >>= 5; *r2 = regaddr & 0x7; regaddr >>= 3; *page = regaddr & 0x1ff; } static u32 ar8216_mii_read(struct ar8216_priv *priv, int reg) { struct phy_device *phy = priv->phy; u16 r1, r2, page; u16 lo, hi; split_addr((u32) reg, &r1, &r2, &page); mdiobus_write(phy->bus, 0x18, 0, page); msleep(1); /* wait for the page switch to propagate */ lo = mdiobus_read(phy->bus, 0x10 | r2, r1); hi = mdiobus_read(phy->bus, 0x10 | r2, r1 + 1); return (hi << 16) | lo; } static void ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val) { struct phy_device *phy = priv->phy; u16 r1, r2, r3; u16 lo, hi; split_addr((u32) reg, &r1, &r2, &r3); mdiobus_write(phy->bus, 0x18, 0, r3); msleep(1); /* wait for the page switch to propagate */ lo = val & 0xffff; hi = (u16) (val >> 16); mdiobus_write(phy->bus, 0x10 | r2, r1 + 1, hi); mdiobus_write(phy->bus, 0x10 | r2, r1, lo); } static u32 ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val) { u32 v; v = priv->read(priv, reg); v &= ~mask; v |= val; priv->write(priv, reg, v); return v; } static inline int ar8216_id_chip(struct ar8216_priv *priv) { u32 val; u16 id; int i; val = ar8216_mii_read(priv, AR8216_REG_CTRL); if (val == ~0) return UNKNOWN; id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION); for (i = 0; i < AR8X16_PROBE_RETRIES; i++) { u16 t; val = ar8216_mii_read(priv, AR8216_REG_CTRL); if (val == ~0) return UNKNOWN; t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION); if (t != id) return UNKNOWN; } switch (id) { case 0x0101: return AR8216; case 0x1000: case 0x1001: return AR8316; default: printk(KERN_DEBUG "ar8216: Unknown Atheros device [ver=%d, rev=%d, phy_id=%04x%04x]\n", (int)(id >> AR8216_CTRL_VERSION_S), (int)(id & AR8216_CTRL_REVISION), mdiobus_read(priv->phy->bus, priv->phy->addr, 2), mdiobus_read(priv->phy->bus, priv->phy->addr, 3)); return UNKNOWN; } } static int ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); priv->vlan = !!val->value.i; return 0; } static int ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); val->value.i = priv->vlan; return 0; } static int ar8216_set_pvid(struct switch_dev *dev, int port, int vlan) { struct ar8216_priv *priv = to_ar8216(dev); /* make sure no invalid PVIDs get set */ if (vlan >= dev->vlans) return -EINVAL; priv->pvid[port] = vlan; return 0; } static int ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan) { struct ar8216_priv *priv = to_ar8216(dev); *vlan = priv->pvid[port]; return 0; } static int ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); priv->vlan_id[val->port_vlan] = val->value.i; return 0; } static int ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); val->value.i = priv->vlan_id[val->port_vlan]; return 0; } static const char *ar8216_speed_str(unsigned speed) { switch (speed) { case AR8216_PORT_SPEED_10M: return "10baseT"; case AR8216_PORT_SPEED_100M: return "100baseT"; case AR8216_PORT_SPEED_1000M: return "1000baseT"; } return "unknown"; } static int ar8216_port_get_link(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); u32 len; u32 status; int port; port = val->port_vlan; memset(priv->buf, '\0', sizeof(priv->buf)); status = priv->read(priv, AR8216_REG_PORT_STATUS(port)); if (status & AR8216_PORT_STATUS_LINK_UP) { len = snprintf(priv->buf, sizeof(priv->buf), "port:%d link:up speed:%s %s-duplex %s%s%s", port, ar8216_speed_str((status & AR8216_PORT_STATUS_SPEED) >> AR8216_PORT_STATUS_SPEED_S), (status & AR8216_PORT_STATUS_DUPLEX) ? "full" : "half", (status & AR8216_PORT_STATUS_TXFLOW) ? "txflow ": "", (status & AR8216_PORT_STATUS_RXFLOW) ? "rxflow " : "", (status & AR8216_PORT_STATUS_LINK_AUTO) ? "auto ": ""); } else { len = snprintf(priv->buf, sizeof(priv->buf), "port:%d link:down", port); } val->value.s = priv->buf; val->len = len; return 0; } static int ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev) { struct ar8216_priv *priv = dev->phy_ptr; unsigned char *buf; if (unlikely(!priv)) goto error; if (!priv->vlan) goto send; if (unlikely(skb_headroom(skb) < 2)) { if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0) goto error; } buf = skb_push(skb, 2); buf[0] = 0x10; buf[1] = 0x80; send: return priv->ndo_old->ndo_start_xmit(skb, dev); error: dev_kfree_skb_any(skb); return 0; } static int ar8216_mangle_rx(struct sk_buff *skb, int napi) { struct ar8216_priv *priv; struct net_device *dev; unsigned char *buf; int port, vlan; dev = skb->dev; if (!dev) goto error; priv = dev->phy_ptr; if (!priv) goto error; /* don't strip the header if vlan mode is disabled */ if (!priv->vlan) goto recv; /* strip header, get vlan id */ buf = skb->data; skb_pull(skb, 2); /* check for vlan header presence */ if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00)) goto recv; port = buf[0] & 0xf; /* no need to fix up packets coming from a tagged source */ if (priv->vlan_tagged & (1 << port)) goto recv; /* lookup port vid from local table, the switch passes an invalid vlan id */ vlan = priv->vlan_id[priv->pvid[port]]; buf[14 + 2] &= 0xf0; buf[14 + 2] |= vlan >> 8; buf[15 + 2] = vlan & 0xff; recv: skb->protocol = eth_type_trans(skb, skb->dev); if (napi) return netif_receive_skb(skb); else return netif_rx(skb); error: /* no vlan? eat the packet! */ dev_kfree_skb_any(skb); return NET_RX_DROP; } static int ar8216_netif_rx(struct sk_buff *skb) { return ar8216_mangle_rx(skb, 0); } static int ar8216_netif_receive_skb(struct sk_buff *skb) { return ar8216_mangle_rx(skb, 1); } static struct switch_attr ar8216_globals[] = { { .type = SWITCH_TYPE_INT, .name = "enable_vlan", .description = "Enable VLAN mode", .set = ar8216_set_vlan, .get = ar8216_get_vlan, .max = 1 }, }; static struct switch_attr ar8216_port[] = { { .type = SWITCH_TYPE_STRING, .name = "link", .description = "Get port link information", .max = 1, .set = NULL, .get = ar8216_port_get_link, }, }; static struct switch_attr ar8216_vlan[] = { { .type = SWITCH_TYPE_INT, .name = "vid", .description = "VLAN ID (0-4094)", .set = ar8216_set_vid, .get = ar8216_get_vid, .max = 4094, }, }; static int ar8216_get_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); u8 ports = priv->vlan_table[val->port_vlan]; int i; val->len = 0; for (i = 0; i < AR8216_NUM_PORTS; i++) { struct switch_port *p; if (!(ports & (1 << i))) continue; p = &val->value.ports[val->len++]; p->id = i; if (priv->vlan_tagged & (1 << i)) p->flags = (1 << SWITCH_PORT_FLAG_TAGGED); else p->flags = 0; } return 0; } static int ar8216_set_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8216_priv *priv = to_ar8216(dev); u8 *vt = &priv->vlan_table[val->port_vlan]; int i, j; *vt = 0; for (i = 0; i < val->len; i++) { struct switch_port *p = &val->value.ports[i]; if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) priv->vlan_tagged |= (1 << p->id); else { priv->vlan_tagged &= ~(1 << p->id); priv->pvid[p->id] = val->port_vlan; /* make sure that an untagged port does not * appear in other vlans */ for (j = 0; j < AR8X16_MAX_VLANS; j++) { if (j == val->port_vlan) continue; priv->vlan_table[j] &= ~(1 << p->id); } } *vt |= 1 << p->id; } return 0; } static int ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val) { int timeout = 20; while ((priv->read(priv, reg) & mask) != val) { if (timeout-- <= 0) { printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n"); return 1; } } return 0; } static void ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val) { if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0)) return; if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) { val &= AR8216_VTUDATA_MEMBER; val |= AR8216_VTUDATA_VALID; priv->write(priv, AR8216_REG_VTU_DATA, val); } op |= AR8216_VTU_ACTIVE; priv->write(priv, AR8216_REG_VTU, op); } static int ar8216_hw_apply(struct switch_dev *dev) { struct ar8216_priv *priv = to_ar8216(dev); u8 portmask[AR8216_NUM_PORTS]; int i, j; mutex_lock(&priv->reg_mutex); /* flush all vlan translation unit entries */ ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0); memset(portmask, 0, sizeof(portmask)); if (priv->vlan) { /* calculate the port destination masks and load vlans * into the vlan translation unit */ for (j = 0; j < AR8X16_MAX_VLANS; j++) { u8 vp = priv->vlan_table[j]; if (!vp) continue; for (i = 0; i < AR8216_NUM_PORTS; i++) { u8 mask = (1 << i); if (vp & mask) portmask[i] |= vp & ~mask; } ar8216_vtu_op(priv, AR8216_VTU_OP_LOAD | (priv->vlan_id[j] << AR8216_VTU_VID_S), priv->vlan_table[j]); } } else { /* vlan disabled: * isolate all ports, but connect them to the cpu port */ for (i = 0; i < AR8216_NUM_PORTS; i++) { if (i == AR8216_PORT_CPU) continue; portmask[i] = 1 << AR8216_PORT_CPU; portmask[AR8216_PORT_CPU] |= (1 << i); } } /* update the port destination mask registers and tag settings */ for (i = 0; i < AR8216_NUM_PORTS; i++) { int egress, ingress; int pvid; if (priv->vlan) { pvid = priv->vlan_id[priv->pvid[i]]; } else { pvid = i; } if (priv->vlan && (priv->vlan_tagged & (1 << i))) { egress = AR8216_OUT_ADD_VLAN; } else { egress = AR8216_OUT_STRIP_VLAN; } if (priv->vlan) { ingress = AR8216_IN_SECURE; } else { ingress = AR8216_IN_PORT_ONLY; } ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i), AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE | AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE | AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK, AR8216_PORT_CTRL_LEARN | (priv->vlan && i == AR8216_PORT_CPU && (priv->chip == AR8216) ? AR8216_PORT_CTRL_HEADER : 0) | (egress << AR8216_PORT_CTRL_VLAN_MODE_S) | (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S)); ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i), AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE | AR8216_PORT_VLAN_DEFAULT_ID, (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) | (ingress << AR8216_PORT_VLAN_MODE_S) | (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S)); } mutex_unlock(&priv->reg_mutex); return 0; } static int ar8316_hw_init(struct ar8216_priv *priv) { int i; u32 val, newval; struct mii_bus *bus; val = priv->read(priv, 0x8); if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) { if (priv->port4_phy) { /* value taken from Ubiquiti RouterStation Pro */ newval = 0x81461bea; printk(KERN_INFO "ar8316: Using port 4 as PHY\n"); } else { newval = 0x01261be2; printk(KERN_INFO "ar8316: Using port 4 as switch port\n"); } } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) { /* value taken from AVM Fritz!Box 7390 sources */ newval = 0x010e5b71; } else { /* no known value for phy interface */ printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n", priv->phy->interface); return -EINVAL; } if (val == newval) goto out; priv->write(priv, 0x8, newval); /* standard atheros magic */ priv->write(priv, 0x38, 0xc000050e); /* Initialize the ports */ bus = priv->phy->bus; for (i = 0; i < 5; i++) { if ((i == 4) && priv->port4_phy && priv->phy->interface == PHY_INTERFACE_MODE_RGMII) { /* work around for phy4 rgmii mode */ mdiobus_write(bus, i, MII_ATH_DBG_ADDR, 0x12); mdiobus_write(bus, i, MII_ATH_DBG_DATA, 0x480c); /* rx delay */ mdiobus_write(bus, i, MII_ATH_DBG_ADDR, 0x0); mdiobus_write(bus, i, MII_ATH_DBG_DATA, 0x824e); /* tx delay */ mdiobus_write(bus, i, MII_ATH_DBG_ADDR, 0x5); mdiobus_write(bus, i, MII_ATH_DBG_DATA, 0x3d47); msleep(1000); } /* initialize the port itself */ mdiobus_write(bus, i, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); mdiobus_write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); msleep(1000); } out: priv->initialized = true; return 0; } static int ar8216_reset_switch(struct switch_dev *dev) { struct ar8216_priv *priv = to_ar8216(dev); int i; mutex_lock(&priv->reg_mutex); memset(&priv->vlan, 0, sizeof(struct ar8216_priv) - offsetof(struct ar8216_priv, vlan)); for (i = 0; i < AR8X16_MAX_VLANS; i++) { priv->vlan_id[i] = i; } for (i = 0; i < AR8216_NUM_PORTS; i++) { /* Enable port learning and tx */ priv->write(priv, AR8216_REG_PORT_CTRL(i), AR8216_PORT_CTRL_LEARN | (4 << AR8216_PORT_CTRL_STATE_S)); priv->write(priv, AR8216_REG_PORT_VLAN(i), 0); /* Configure all PHYs */ if (i == AR8216_PORT_CPU) { priv->write(priv, AR8216_REG_PORT_STATUS(i), AR8216_PORT_STATUS_LINK_UP | ((priv->chip == AR8316) ? AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) | AR8216_PORT_STATUS_TXMAC | AR8216_PORT_STATUS_RXMAC | ((priv->chip == AR8316) ? AR8216_PORT_STATUS_RXFLOW : 0) | ((priv->chip == AR8316) ? AR8216_PORT_STATUS_TXFLOW : 0) | AR8216_PORT_STATUS_DUPLEX); } else { priv->write(priv, AR8216_REG_PORT_STATUS(i), AR8216_PORT_STATUS_LINK_AUTO); } } /* XXX: undocumented magic from atheros, required! */ priv->write(priv, 0x38, 0xc000050e); if (priv->chip == AR8216) { ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8216_GCTRL_MTU, 1518 + 8 + 2); } else if (priv->chip == AR8316) { /* enable jumbo frames */ ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8316_GCTRL_MTU, 9018 + 8 + 2); } if (priv->chip == AR8316) { /* enable cpu port to receive multicast and broadcast frames */ priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f); } mutex_unlock(&priv->reg_mutex); return ar8216_hw_apply(dev); } static const struct switch_dev_ops ar8216_ops = { .attr_global = { .attr = ar8216_globals, .n_attr = ARRAY_SIZE(ar8216_globals), }, .attr_port = { .attr = ar8216_port, .n_attr = ARRAY_SIZE(ar8216_port), }, .attr_vlan = { .attr = ar8216_vlan, .n_attr = ARRAY_SIZE(ar8216_vlan), }, .get_port_pvid = ar8216_get_pvid, .set_port_pvid = ar8216_set_pvid, .get_vlan_ports = ar8216_get_ports, .set_vlan_ports = ar8216_set_ports, .apply_config = ar8216_hw_apply, .reset_switch = ar8216_reset_switch, }; static int ar8216_config_init(struct phy_device *pdev) { struct ar8216_priv *priv = pdev->priv; struct net_device *dev = pdev->attached_dev; struct switch_dev *swdev; int ret; if (!priv) { priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL); if (priv == NULL) return -ENOMEM; } priv->phy = pdev; priv->chip = ar8216_id_chip(priv); if (pdev->addr != 0) { if (priv->chip == AR8316) { pdev->supported |= SUPPORTED_1000baseT_Full; pdev->advertising |= ADVERTISED_1000baseT_Full; /* check if we're attaching to the switch twice */ pdev = pdev->bus->phy_map[0]; if (!pdev) { kfree(priv); return 0; } /* switch device has not been initialized, reuse priv */ if (!pdev->priv) { priv->port4_phy = true; pdev->priv = priv; return 0; } kfree(priv); /* switch device has been initialized, reinit */ priv = pdev->priv; priv->dev.ports = (AR8216_NUM_PORTS - 1); priv->initialized = false; priv->port4_phy = true; ar8316_hw_init(priv); return 0; } kfree(priv); return 0; } printk(KERN_INFO "%s: AR%d switch driver attached.\n", pdev->attached_dev->name, priv->chip); pdev->supported = priv->chip == AR8316 ? SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full; pdev->advertising = pdev->supported; mutex_init(&priv->reg_mutex); priv->read = ar8216_mii_read; priv->write = ar8216_mii_write; pdev->priv = priv; swdev = &priv->dev; swdev->cpu_port = AR8216_PORT_CPU; swdev->ops = &ar8216_ops; swdev->ports = AR8216_NUM_PORTS; if (priv->chip == AR8316) { swdev->name = "Atheros AR8316"; swdev->vlans = AR8X16_MAX_VLANS; if (priv->port4_phy) { /* port 5 connected to the other mac, therefore unusable */ swdev->ports = (AR8216_NUM_PORTS - 1); } } else { swdev->name = "Atheros AR8216"; swdev->vlans = AR8216_NUM_VLANS; } if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) { kfree(priv); goto done; } if (priv->chip == AR8316) { ret = ar8316_hw_init(priv); if (ret) { kfree(priv); goto done; } } ret = ar8216_reset_switch(&priv->dev); if (ret) { kfree(priv); goto done; } dev->phy_ptr = priv; /* VID fixup only needed on ar8216 */ if (pdev->addr == 0 && priv->chip == AR8216) { pdev->pkt_align = 2; pdev->netif_receive_skb = ar8216_netif_receive_skb; pdev->netif_rx = ar8216_netif_rx; priv->ndo_old = dev->netdev_ops; memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops)); priv->ndo.ndo_start_xmit = ar8216_mangle_tx; dev->netdev_ops = &priv->ndo; } done: return ret; } static int ar8216_read_status(struct phy_device *phydev) { struct ar8216_priv *priv = phydev->priv; int ret; if (phydev->addr != 0) { return genphy_read_status(phydev); } phydev->speed = priv->chip == AR8316 ? SPEED_1000 : SPEED_100; phydev->duplex = DUPLEX_FULL; phydev->link = 1; /* flush the address translation unit */ mutex_lock(&priv->reg_mutex); ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0); if (!ret) priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH); else ret = -ETIMEDOUT; mutex_unlock(&priv->reg_mutex); phydev->state = PHY_RUNNING; netif_carrier_on(phydev->attached_dev); phydev->adjust_link(phydev->attached_dev); return ret; } static int ar8216_config_aneg(struct phy_device *phydev) { if (phydev->addr == 0) return 0; return genphy_config_aneg(phydev); } static int ar8216_probe(struct phy_device *pdev) { struct ar8216_priv priv; u16 chip; priv.phy = pdev; chip = ar8216_id_chip(&priv); if (chip == UNKNOWN) return -ENODEV; return 0; } static void ar8216_remove(struct phy_device *pdev) { struct ar8216_priv *priv = pdev->priv; struct net_device *dev = pdev->attached_dev; if (!priv) return; if (priv->ndo_old && dev) dev->netdev_ops = priv->ndo_old; if (pdev->addr == 0) unregister_switch(&priv->dev); kfree(priv); } static struct phy_driver ar8216_driver = { .phy_id = 0x004d0000, .name = "Atheros AR8216/AR8316", .phy_id_mask = 0xffff0000, .features = PHY_BASIC_FEATURES, .probe = ar8216_probe, .remove = ar8216_remove, .config_init = &ar8216_config_init, .config_aneg = &ar8216_config_aneg, .read_status = &ar8216_read_status, .driver = { .owner = THIS_MODULE }, }; int __init ar8216_init(void) { return phy_driver_register(&ar8216_driver); } void __exit ar8216_exit(void) { phy_driver_unregister(&ar8216_driver); } module_init(ar8216_init); module_exit(ar8216_exit); MODULE_LICENSE("GPL");