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409 lines
10 KiB
409 lines
10 KiB
/*
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* net/dsa/slave.c - Slave device handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/phy.h>
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#include "dsa_priv.h"
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/* slave mii_bus handling ***************************************************/
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static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_port_mask & (1 << addr))
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return ds->drv->phy_read(ds, addr, reg);
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return 0xffff;
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}
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static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_port_mask & (1 << addr))
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return ds->drv->phy_write(ds, addr, reg, val);
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return 0;
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}
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void dsa_slave_mii_bus_init(struct dsa_switch *ds)
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{
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ds->slave_mii_bus->priv = (void *)ds;
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ds->slave_mii_bus->name = "dsa slave smi";
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ds->slave_mii_bus->read = dsa_slave_phy_read;
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ds->slave_mii_bus->write = dsa_slave_phy_write;
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snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s:%.2x",
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ds->master_mii_bus->id, ds->pd->sw_addr);
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ds->slave_mii_bus->parent = &ds->master_mii_bus->dev;
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}
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/* slave device handling ****************************************************/
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static int dsa_slave_init(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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dev->iflink = p->parent->dst->master_netdev->ifindex;
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return 0;
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}
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static int dsa_slave_open(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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int err;
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if (!(master->flags & IFF_UP))
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return -ENETDOWN;
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if (compare_ether_addr(dev->dev_addr, master->dev_addr)) {
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err = dev_unicast_add(master, dev->dev_addr);
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if (err < 0)
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goto out;
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}
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if (dev->flags & IFF_ALLMULTI) {
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err = dev_set_allmulti(master, 1);
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if (err < 0)
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goto del_unicast;
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}
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if (dev->flags & IFF_PROMISC) {
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err = dev_set_promiscuity(master, 1);
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if (err < 0)
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goto clear_allmulti;
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}
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return 0;
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clear_allmulti:
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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del_unicast:
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if (compare_ether_addr(dev->dev_addr, master->dev_addr))
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dev_unicast_delete(master, dev->dev_addr);
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out:
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return err;
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}
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static int dsa_slave_close(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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dev_mc_unsync(master, dev);
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dev_unicast_unsync(master, dev);
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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if (dev->flags & IFF_PROMISC)
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dev_set_promiscuity(master, -1);
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if (compare_ether_addr(dev->dev_addr, master->dev_addr))
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dev_unicast_delete(master, dev->dev_addr);
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return 0;
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}
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static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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if (change & IFF_ALLMULTI)
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dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
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if (change & IFF_PROMISC)
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dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
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}
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static void dsa_slave_set_rx_mode(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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dev_mc_sync(master, dev);
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dev_unicast_sync(master, dev);
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}
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static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = p->parent->dst->master_netdev;
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struct sockaddr *addr = a;
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int err;
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if (!is_valid_ether_addr(addr->sa_data))
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return -EADDRNOTAVAIL;
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if (!(dev->flags & IFF_UP))
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goto out;
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if (compare_ether_addr(addr->sa_data, master->dev_addr)) {
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err = dev_unicast_add(master, addr->sa_data);
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if (err < 0)
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return err;
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}
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if (compare_ether_addr(dev->dev_addr, master->dev_addr))
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dev_unicast_delete(master, dev->dev_addr);
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out:
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memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
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return 0;
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}
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static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct mii_ioctl_data *mii_data = if_mii(ifr);
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if (p->phy != NULL)
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return phy_mii_ioctl(p->phy, mii_data, cmd);
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return -EOPNOTSUPP;
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}
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/* ethtool operations *******************************************************/
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static int
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dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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int err;
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err = -EOPNOTSUPP;
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if (p->phy != NULL) {
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err = phy_read_status(p->phy);
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if (err == 0)
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err = phy_ethtool_gset(p->phy, cmd);
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}
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return err;
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}
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static int
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dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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if (p->phy != NULL)
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return phy_ethtool_sset(p->phy, cmd);
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return -EOPNOTSUPP;
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}
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static void dsa_slave_get_drvinfo(struct net_device *dev,
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struct ethtool_drvinfo *drvinfo)
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{
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strncpy(drvinfo->driver, "dsa", 32);
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strncpy(drvinfo->version, dsa_driver_version, 32);
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strncpy(drvinfo->fw_version, "N/A", 32);
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strncpy(drvinfo->bus_info, "platform", 32);
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}
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static int dsa_slave_nway_reset(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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if (p->phy != NULL)
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return genphy_restart_aneg(p->phy);
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return -EOPNOTSUPP;
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}
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static u32 dsa_slave_get_link(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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if (p->phy != NULL) {
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genphy_update_link(p->phy);
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return p->phy->link;
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}
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return -EOPNOTSUPP;
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}
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static void dsa_slave_get_strings(struct net_device *dev,
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uint32_t stringset, uint8_t *data)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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if (stringset == ETH_SS_STATS) {
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int len = ETH_GSTRING_LEN;
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strncpy(data, "tx_packets", len);
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strncpy(data + len, "tx_bytes", len);
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strncpy(data + 2 * len, "rx_packets", len);
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strncpy(data + 3 * len, "rx_bytes", len);
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if (ds->drv->get_strings != NULL)
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ds->drv->get_strings(ds, p->port, data + 4 * len);
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}
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}
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static void dsa_slave_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *stats,
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uint64_t *data)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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data[0] = p->dev->stats.tx_packets;
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data[1] = p->dev->stats.tx_bytes;
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data[2] = p->dev->stats.rx_packets;
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data[3] = p->dev->stats.rx_bytes;
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if (ds->drv->get_ethtool_stats != NULL)
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ds->drv->get_ethtool_stats(ds, p->port, data + 4);
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}
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static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->parent;
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if (sset == ETH_SS_STATS) {
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int count;
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count = 4;
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if (ds->drv->get_sset_count != NULL)
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count += ds->drv->get_sset_count(ds);
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return count;
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}
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return -EOPNOTSUPP;
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}
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static const struct ethtool_ops dsa_slave_ethtool_ops = {
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.get_settings = dsa_slave_get_settings,
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.set_settings = dsa_slave_set_settings,
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.get_drvinfo = dsa_slave_get_drvinfo,
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.nway_reset = dsa_slave_nway_reset,
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.get_link = dsa_slave_get_link,
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.set_sg = ethtool_op_set_sg,
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.get_strings = dsa_slave_get_strings,
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.get_ethtool_stats = dsa_slave_get_ethtool_stats,
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.get_sset_count = dsa_slave_get_sset_count,
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};
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#ifdef CONFIG_NET_DSA_TAG_DSA
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static const struct net_device_ops dsa_netdev_ops = {
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.ndo_init = dsa_slave_init,
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.ndo_open = dsa_slave_open,
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.ndo_stop = dsa_slave_close,
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.ndo_start_xmit = dsa_xmit,
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.ndo_change_rx_flags = dsa_slave_change_rx_flags,
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.ndo_set_rx_mode = dsa_slave_set_rx_mode,
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.ndo_set_multicast_list = dsa_slave_set_rx_mode,
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.ndo_set_mac_address = dsa_slave_set_mac_address,
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.ndo_do_ioctl = dsa_slave_ioctl,
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};
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#endif
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#ifdef CONFIG_NET_DSA_TAG_EDSA
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static const struct net_device_ops edsa_netdev_ops = {
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.ndo_init = dsa_slave_init,
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.ndo_open = dsa_slave_open,
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.ndo_stop = dsa_slave_close,
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.ndo_start_xmit = edsa_xmit,
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.ndo_change_rx_flags = dsa_slave_change_rx_flags,
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.ndo_set_rx_mode = dsa_slave_set_rx_mode,
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.ndo_set_multicast_list = dsa_slave_set_rx_mode,
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.ndo_set_mac_address = dsa_slave_set_mac_address,
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.ndo_do_ioctl = dsa_slave_ioctl,
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};
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#endif
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#ifdef CONFIG_NET_DSA_TAG_TRAILER
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static const struct net_device_ops trailer_netdev_ops = {
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.ndo_init = dsa_slave_init,
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.ndo_open = dsa_slave_open,
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.ndo_stop = dsa_slave_close,
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.ndo_start_xmit = trailer_xmit,
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.ndo_change_rx_flags = dsa_slave_change_rx_flags,
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.ndo_set_rx_mode = dsa_slave_set_rx_mode,
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.ndo_set_multicast_list = dsa_slave_set_rx_mode,
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.ndo_set_mac_address = dsa_slave_set_mac_address,
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.ndo_do_ioctl = dsa_slave_ioctl,
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};
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#endif
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/* slave device setup *******************************************************/
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struct net_device *
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dsa_slave_create(struct dsa_switch *ds, struct device *parent,
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int port, char *name)
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{
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struct net_device *master = ds->dst->master_netdev;
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struct net_device *slave_dev;
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struct dsa_slave_priv *p;
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int ret;
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slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv),
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name, ether_setup);
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if (slave_dev == NULL)
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return slave_dev;
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slave_dev->features = master->vlan_features;
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SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops);
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memcpy(slave_dev->dev_addr, master->dev_addr, ETH_ALEN);
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slave_dev->tx_queue_len = 0;
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switch (ds->dst->tag_protocol) {
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#ifdef CONFIG_NET_DSA_TAG_DSA
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case htons(ETH_P_DSA):
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slave_dev->netdev_ops = &dsa_netdev_ops;
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break;
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#endif
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#ifdef CONFIG_NET_DSA_TAG_EDSA
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case htons(ETH_P_EDSA):
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slave_dev->netdev_ops = &edsa_netdev_ops;
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break;
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#endif
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#ifdef CONFIG_NET_DSA_TAG_TRAILER
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case htons(ETH_P_TRAILER):
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slave_dev->netdev_ops = &trailer_netdev_ops;
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break;
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#endif
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default:
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BUG();
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}
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SET_NETDEV_DEV(slave_dev, parent);
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slave_dev->vlan_features = master->vlan_features;
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p = netdev_priv(slave_dev);
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p->dev = slave_dev;
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p->parent = ds;
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p->port = port;
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p->phy = ds->slave_mii_bus->phy_map[port];
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ret = register_netdev(slave_dev);
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if (ret) {
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printk(KERN_ERR "%s: error %d registering interface %s\n",
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master->name, ret, slave_dev->name);
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free_netdev(slave_dev);
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return NULL;
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}
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netif_carrier_off(slave_dev);
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if (p->phy != NULL) {
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phy_attach(slave_dev, dev_name(&p->phy->dev),
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0, PHY_INTERFACE_MODE_GMII);
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p->phy->autoneg = AUTONEG_ENABLE;
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p->phy->speed = 0;
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p->phy->duplex = 0;
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p->phy->advertising = p->phy->supported | ADVERTISED_Autoneg;
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phy_start_aneg(p->phy);
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}
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return slave_dev;
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}
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