// SPDX-License-Identifier: GPL-2.0 /* Copyright 2019 NXP Semiconductors * * This is an umbrella module for all network switches that are * register-compatible with Ocelot and that perform I/O to their host CPU * through an NPI (Node Processor Interface) Ethernet port. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "felix.h" static enum dsa_tag_protocol felix_get_tag_protocol(struct dsa_switch *ds, int port, enum dsa_tag_protocol mp) { return DSA_TAG_PROTO_OCELOT; } static int felix_set_ageing_time(struct dsa_switch *ds, unsigned int ageing_time) { struct ocelot *ocelot = ds->priv; ocelot_set_ageing_time(ocelot, ageing_time); return 0; } static int felix_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb, void *data) { struct ocelot *ocelot = ds->priv; return ocelot_fdb_dump(ocelot, port, cb, data); } static int felix_fdb_add(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid) { struct ocelot *ocelot = ds->priv; return ocelot_fdb_add(ocelot, port, addr, vid); } static int felix_fdb_del(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid) { struct ocelot *ocelot = ds->priv; return ocelot_fdb_del(ocelot, port, addr, vid); } /* This callback needs to be present */ static int felix_mdb_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb) { return 0; } static void felix_mdb_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb) { struct ocelot *ocelot = ds->priv; ocelot_port_mdb_add(ocelot, port, mdb); } static int felix_mdb_del(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb) { struct ocelot *ocelot = ds->priv; return ocelot_port_mdb_del(ocelot, port, mdb); } static void felix_bridge_stp_state_set(struct dsa_switch *ds, int port, u8 state) { struct ocelot *ocelot = ds->priv; return ocelot_bridge_stp_state_set(ocelot, port, state); } static int felix_bridge_join(struct dsa_switch *ds, int port, struct net_device *br) { struct ocelot *ocelot = ds->priv; return ocelot_port_bridge_join(ocelot, port, br); } static void felix_bridge_leave(struct dsa_switch *ds, int port, struct net_device *br) { struct ocelot *ocelot = ds->priv; ocelot_port_bridge_leave(ocelot, port, br); } /* This callback needs to be present */ static int felix_vlan_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) { return 0; } static int felix_vlan_filtering(struct dsa_switch *ds, int port, bool enabled) { struct ocelot *ocelot = ds->priv; ocelot_port_vlan_filtering(ocelot, port, enabled); return 0; } static void felix_vlan_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) { struct ocelot *ocelot = ds->priv; u16 flags = vlan->flags; u16 vid; int err; if (dsa_is_cpu_port(ds, port)) flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { err = ocelot_vlan_add(ocelot, port, vid, flags & BRIDGE_VLAN_INFO_PVID, flags & BRIDGE_VLAN_INFO_UNTAGGED); if (err) { dev_err(ds->dev, "Failed to add VLAN %d to port %d: %d\n", vid, port, err); return; } } } static int felix_vlan_del(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) { struct ocelot *ocelot = ds->priv; u16 vid; int err; for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { err = ocelot_vlan_del(ocelot, port, vid); if (err) { dev_err(ds->dev, "Failed to remove VLAN %d from port %d: %d\n", vid, port, err); return err; } } return 0; } static int felix_port_enable(struct dsa_switch *ds, int port, struct phy_device *phy) { struct ocelot *ocelot = ds->priv; ocelot_port_enable(ocelot, port, phy); return 0; } static void felix_port_disable(struct dsa_switch *ds, int port) { struct ocelot *ocelot = ds->priv; return ocelot_port_disable(ocelot, port); } static void felix_phylink_validate(struct dsa_switch *ds, int port, unsigned long *supported, struct phylink_link_state *state) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); if (felix->info->phylink_validate) felix->info->phylink_validate(ocelot, port, supported, state); } static int felix_phylink_mac_pcs_get_state(struct dsa_switch *ds, int port, struct phylink_link_state *state) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); if (felix->info->pcs_link_state) felix->info->pcs_link_state(ocelot, port, state); return 0; } static void felix_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int link_an_mode, const struct phylink_link_state *state) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); if (felix->info->pcs_config) felix->info->pcs_config(ocelot, port, link_an_mode, state); } static void felix_phylink_mac_link_down(struct dsa_switch *ds, int port, unsigned int link_an_mode, phy_interface_t interface) { struct ocelot *ocelot = ds->priv; struct ocelot_port *ocelot_port = ocelot->ports[port]; ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG); ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0); } static void felix_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int link_an_mode, phy_interface_t interface, struct phy_device *phydev, int speed, int duplex, bool tx_pause, bool rx_pause) { struct ocelot *ocelot = ds->priv; struct ocelot_port *ocelot_port = ocelot->ports[port]; struct felix *felix = ocelot_to_felix(ocelot); u32 mac_fc_cfg; /* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and * PORT_RST bits in DEV_CLOCK_CFG. Note that the way this system is * integrated is that the MAC speed is fixed and it's the PCS who is * performing the rate adaptation, so we have to write "1000Mbps" into * the LINK_SPEED field of DEV_CLOCK_CFG (which is also its default * value). */ ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(OCELOT_SPEED_1000), DEV_CLOCK_CFG); switch (speed) { case SPEED_10: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(3); break; case SPEED_100: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(2); break; case SPEED_1000: case SPEED_2500: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(1); break; default: dev_err(ocelot->dev, "Unsupported speed on port %d: %d\n", port, speed); return; } /* handle Rx pause in all cases, with 2500base-X this is used for rate * adaptation. */ mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA; if (tx_pause) mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA | SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) | SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) | SYS_MAC_FC_CFG_ZERO_PAUSE_ENA; /* Flow control. Link speed is only used here to evaluate the time * specification in incoming pause frames. */ ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port); ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port); /* Undo the effects of felix_phylink_mac_link_down: * enable MAC module */ ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA | DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG); /* Enable receiving frames on the port, and activate auto-learning of * MAC addresses. */ ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO | ANA_PORT_PORT_CFG_RECV_ENA | ANA_PORT_PORT_CFG_PORTID_VAL(port), ANA_PORT_PORT_CFG, port); /* Core: Enable port for frame transfer */ ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1); if (felix->info->pcs_link_up) felix->info->pcs_link_up(ocelot, port, link_an_mode, interface, speed, duplex); if (felix->info->port_sched_speed_set) felix->info->port_sched_speed_set(ocelot, port, speed); } static void felix_port_qos_map_init(struct ocelot *ocelot, int port) { int i; ocelot_rmw_gix(ocelot, ANA_PORT_QOS_CFG_QOS_PCP_ENA, ANA_PORT_QOS_CFG_QOS_PCP_ENA, ANA_PORT_QOS_CFG, port); for (i = 0; i < FELIX_NUM_TC * 2; i++) { ocelot_rmw_ix(ocelot, (ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL & i) | ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL(i), ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL | ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL_M, ANA_PORT_PCP_DEI_MAP, port, i); } } static void felix_get_strings(struct dsa_switch *ds, int port, u32 stringset, u8 *data) { struct ocelot *ocelot = ds->priv; return ocelot_get_strings(ocelot, port, stringset, data); } static void felix_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data) { struct ocelot *ocelot = ds->priv; ocelot_get_ethtool_stats(ocelot, port, data); } static int felix_get_sset_count(struct dsa_switch *ds, int port, int sset) { struct ocelot *ocelot = ds->priv; return ocelot_get_sset_count(ocelot, port, sset); } static int felix_get_ts_info(struct dsa_switch *ds, int port, struct ethtool_ts_info *info) { struct ocelot *ocelot = ds->priv; return ocelot_get_ts_info(ocelot, port, info); } static int felix_parse_ports_node(struct felix *felix, struct device_node *ports_node, phy_interface_t *port_phy_modes) { struct ocelot *ocelot = &felix->ocelot; struct device *dev = felix->ocelot.dev; struct device_node *child; for_each_available_child_of_node(ports_node, child) { phy_interface_t phy_mode; u32 port; int err; /* Get switch port number from DT */ if (of_property_read_u32(child, "reg", &port) < 0) { dev_err(dev, "Port number not defined in device tree " "(property \"reg\")\n"); of_node_put(child); return -ENODEV; } /* Get PHY mode from DT */ err = of_get_phy_mode(child, &phy_mode); if (err) { dev_err(dev, "Failed to read phy-mode or " "phy-interface-type property for port %d\n", port); of_node_put(child); return -ENODEV; } err = felix->info->prevalidate_phy_mode(ocelot, port, phy_mode); if (err < 0) { dev_err(dev, "Unsupported PHY mode %s on port %d\n", phy_modes(phy_mode), port); of_node_put(child); return err; } port_phy_modes[port] = phy_mode; } return 0; } static int felix_parse_dt(struct felix *felix, phy_interface_t *port_phy_modes) { struct device *dev = felix->ocelot.dev; struct device_node *switch_node; struct device_node *ports_node; int err; switch_node = dev->of_node; ports_node = of_get_child_by_name(switch_node, "ports"); if (!ports_node) { dev_err(dev, "Incorrect bindings: absent \"ports\" node\n"); return -ENODEV; } err = felix_parse_ports_node(felix, ports_node, port_phy_modes); of_node_put(ports_node); return err; } static int felix_init_structs(struct felix *felix, int num_phys_ports) { struct ocelot *ocelot = &felix->ocelot; phy_interface_t *port_phy_modes; struct resource res; int port, i, err; ocelot->num_phys_ports = num_phys_ports; ocelot->ports = devm_kcalloc(ocelot->dev, num_phys_ports, sizeof(struct ocelot_port *), GFP_KERNEL); if (!ocelot->ports) return -ENOMEM; ocelot->map = felix->info->map; ocelot->stats_layout = felix->info->stats_layout; ocelot->num_stats = felix->info->num_stats; ocelot->shared_queue_sz = felix->info->shared_queue_sz; ocelot->num_mact_rows = felix->info->num_mact_rows; ocelot->vcap_is2_keys = felix->info->vcap_is2_keys; ocelot->vcap_is2_actions= felix->info->vcap_is2_actions; ocelot->vcap = felix->info->vcap; ocelot->ops = felix->info->ops; port_phy_modes = kcalloc(num_phys_ports, sizeof(phy_interface_t), GFP_KERNEL); if (!port_phy_modes) return -ENOMEM; err = felix_parse_dt(felix, port_phy_modes); if (err) { kfree(port_phy_modes); return err; } for (i = 0; i < TARGET_MAX; i++) { struct regmap *target; if (!felix->info->target_io_res[i].name) continue; memcpy(&res, &felix->info->target_io_res[i], sizeof(res)); res.flags = IORESOURCE_MEM; res.start += felix->switch_base; res.end += felix->switch_base; target = ocelot_regmap_init(ocelot, &res); if (IS_ERR(target)) { dev_err(ocelot->dev, "Failed to map device memory space\n"); kfree(port_phy_modes); return PTR_ERR(target); } ocelot->targets[i] = target; } err = ocelot_regfields_init(ocelot, felix->info->regfields); if (err) { dev_err(ocelot->dev, "failed to init reg fields map\n"); kfree(port_phy_modes); return err; } for (port = 0; port < num_phys_ports; port++) { struct ocelot_port *ocelot_port; struct regmap *target; u8 *template; ocelot_port = devm_kzalloc(ocelot->dev, sizeof(struct ocelot_port), GFP_KERNEL); if (!ocelot_port) { dev_err(ocelot->dev, "failed to allocate port memory\n"); kfree(port_phy_modes); return -ENOMEM; } memcpy(&res, &felix->info->port_io_res[port], sizeof(res)); res.flags = IORESOURCE_MEM; res.start += felix->switch_base; res.end += felix->switch_base; target = ocelot_regmap_init(ocelot, &res); if (IS_ERR(target)) { dev_err(ocelot->dev, "Failed to map memory space for port %d\n", port); kfree(port_phy_modes); return PTR_ERR(target); } template = devm_kzalloc(ocelot->dev, OCELOT_TAG_LEN, GFP_KERNEL); if (!template) { dev_err(ocelot->dev, "Failed to allocate memory for DSA tag\n"); kfree(port_phy_modes); return -ENOMEM; } ocelot_port->phy_mode = port_phy_modes[port]; ocelot_port->ocelot = ocelot; ocelot_port->target = target; ocelot_port->xmit_template = template; ocelot->ports[port] = ocelot_port; felix->info->xmit_template_populate(ocelot, port); } kfree(port_phy_modes); if (felix->info->mdio_bus_alloc) { err = felix->info->mdio_bus_alloc(ocelot); if (err < 0) return err; } return 0; } static struct ptp_clock_info ocelot_ptp_clock_info = { .owner = THIS_MODULE, .name = "felix ptp", .max_adj = 0x7fffffff, .n_alarm = 0, .n_ext_ts = 0, .n_per_out = OCELOT_PTP_PINS_NUM, .n_pins = OCELOT_PTP_PINS_NUM, .pps = 0, .gettime64 = ocelot_ptp_gettime64, .settime64 = ocelot_ptp_settime64, .adjtime = ocelot_ptp_adjtime, .adjfine = ocelot_ptp_adjfine, .verify = ocelot_ptp_verify, .enable = ocelot_ptp_enable, }; /* Hardware initialization done here so that we can allocate structures with * devm without fear of dsa_register_switch returning -EPROBE_DEFER and causing * us to allocate structures twice (leak memory) and map PCI memory twice * (which will not work). */ static int felix_setup(struct dsa_switch *ds) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); int port, err; int tc; err = felix_init_structs(felix, ds->num_ports); if (err) return err; ocelot_init(ocelot); if (ocelot->ptp) { err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info); if (err) { dev_err(ocelot->dev, "Timestamp initialization failed\n"); ocelot->ptp = 0; } } for (port = 0; port < ds->num_ports; port++) { ocelot_init_port(ocelot, port); /* Bring up the CPU port module and configure the NPI port */ if (dsa_is_cpu_port(ds, port)) ocelot_configure_cpu(ocelot, port, OCELOT_TAG_PREFIX_NONE, OCELOT_TAG_PREFIX_LONG); /* Set the default QoS Classification based on PCP and DEI * bits of vlan tag. */ felix_port_qos_map_init(ocelot, port); } /* Include the CPU port module in the forwarding mask for unknown * unicast - the hardware default value for ANA_FLOODING_FLD_UNICAST * excludes BIT(ocelot->num_phys_ports), and so does ocelot_init, since * Ocelot relies on whitelisting MAC addresses towards PGID_CPU. */ ocelot_write_rix(ocelot, ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)), ANA_PGID_PGID, PGID_UC); /* Setup the per-traffic class flooding PGIDs */ for (tc = 0; tc < FELIX_NUM_TC; tc++) ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) | ANA_FLOODING_FLD_BROADCAST(PGID_MC) | ANA_FLOODING_FLD_UNICAST(PGID_UC), ANA_FLOODING, tc); ds->mtu_enforcement_ingress = true; ds->configure_vlan_while_not_filtering = true; /* It looks like the MAC/PCS interrupt register - PM0_IEVENT (0x8040) * isn't instantiated for the Felix PF. * In-band AN may take a few ms to complete, so we need to poll. */ ds->pcs_poll = true; return 0; } static void felix_teardown(struct dsa_switch *ds) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); if (felix->info->mdio_bus_free) felix->info->mdio_bus_free(ocelot); ocelot_deinit_timestamp(ocelot); /* stop workqueue thread */ ocelot_deinit(ocelot); } static int felix_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr) { struct ocelot *ocelot = ds->priv; return ocelot_hwstamp_get(ocelot, port, ifr); } static int felix_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr) { struct ocelot *ocelot = ds->priv; return ocelot_hwstamp_set(ocelot, port, ifr); } static bool felix_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb, unsigned int type) { struct skb_shared_hwtstamps *shhwtstamps; struct ocelot *ocelot = ds->priv; u8 *extraction = skb->data - ETH_HLEN - OCELOT_TAG_LEN; u32 tstamp_lo, tstamp_hi; struct timespec64 ts; u64 tstamp, val; ocelot_ptp_gettime64(&ocelot->ptp_info, &ts); tstamp = ktime_set(ts.tv_sec, ts.tv_nsec); packing(extraction, &val, 116, 85, OCELOT_TAG_LEN, UNPACK, 0); tstamp_lo = (u32)val; tstamp_hi = tstamp >> 32; if ((tstamp & 0xffffffff) < tstamp_lo) tstamp_hi--; tstamp = ((u64)tstamp_hi << 32) | tstamp_lo; shhwtstamps = skb_hwtstamps(skb); memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); shhwtstamps->hwtstamp = tstamp; return false; } static bool felix_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *clone, unsigned int type) { struct ocelot *ocelot = ds->priv; struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port_add_txtstamp_skb(ocelot_port, clone)) return true; return false; } static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu) { struct ocelot *ocelot = ds->priv; ocelot_port_set_maxlen(ocelot, port, new_mtu); return 0; } static int felix_get_max_mtu(struct dsa_switch *ds, int port) { struct ocelot *ocelot = ds->priv; return ocelot_get_max_mtu(ocelot, port); } static int felix_cls_flower_add(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress) { struct ocelot *ocelot = ds->priv; return ocelot_cls_flower_replace(ocelot, port, cls, ingress); } static int felix_cls_flower_del(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress) { struct ocelot *ocelot = ds->priv; return ocelot_cls_flower_destroy(ocelot, port, cls, ingress); } static int felix_cls_flower_stats(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress) { struct ocelot *ocelot = ds->priv; return ocelot_cls_flower_stats(ocelot, port, cls, ingress); } static int felix_port_policer_add(struct dsa_switch *ds, int port, struct dsa_mall_policer_tc_entry *policer) { struct ocelot *ocelot = ds->priv; struct ocelot_policer pol = { .rate = div_u64(policer->rate_bytes_per_sec, 1000) * 8, .burst = policer->burst, }; return ocelot_port_policer_add(ocelot, port, &pol); } static void felix_port_policer_del(struct dsa_switch *ds, int port) { struct ocelot *ocelot = ds->priv; ocelot_port_policer_del(ocelot, port); } static int felix_port_setup_tc(struct dsa_switch *ds, int port, enum tc_setup_type type, void *type_data) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); if (felix->info->port_setup_tc) return felix->info->port_setup_tc(ds, port, type, type_data); else return -EOPNOTSUPP; } const struct dsa_switch_ops felix_switch_ops = { .get_tag_protocol = felix_get_tag_protocol, .setup = felix_setup, .teardown = felix_teardown, .set_ageing_time = felix_set_ageing_time, .get_strings = felix_get_strings, .get_ethtool_stats = felix_get_ethtool_stats, .get_sset_count = felix_get_sset_count, .get_ts_info = felix_get_ts_info, .phylink_validate = felix_phylink_validate, .phylink_mac_link_state = felix_phylink_mac_pcs_get_state, .phylink_mac_config = felix_phylink_mac_config, .phylink_mac_link_down = felix_phylink_mac_link_down, .phylink_mac_link_up = felix_phylink_mac_link_up, .port_enable = felix_port_enable, .port_disable = felix_port_disable, .port_fdb_dump = felix_fdb_dump, .port_fdb_add = felix_fdb_add, .port_fdb_del = felix_fdb_del, .port_mdb_prepare = felix_mdb_prepare, .port_mdb_add = felix_mdb_add, .port_mdb_del = felix_mdb_del, .port_bridge_join = felix_bridge_join, .port_bridge_leave = felix_bridge_leave, .port_stp_state_set = felix_bridge_stp_state_set, .port_vlan_prepare = felix_vlan_prepare, .port_vlan_filtering = felix_vlan_filtering, .port_vlan_add = felix_vlan_add, .port_vlan_del = felix_vlan_del, .port_hwtstamp_get = felix_hwtstamp_get, .port_hwtstamp_set = felix_hwtstamp_set, .port_rxtstamp = felix_rxtstamp, .port_txtstamp = felix_txtstamp, .port_change_mtu = felix_change_mtu, .port_max_mtu = felix_get_max_mtu, .port_policer_add = felix_port_policer_add, .port_policer_del = felix_port_policer_del, .cls_flower_add = felix_cls_flower_add, .cls_flower_del = felix_cls_flower_del, .cls_flower_stats = felix_cls_flower_stats, .port_setup_tc = felix_port_setup_tc, }; static int __init felix_init(void) { int err; err = pci_register_driver(&felix_vsc9959_pci_driver); if (err) return err; err = platform_driver_register(&seville_vsc9953_driver); if (err) return err; return 0; } module_init(felix_init); static void __exit felix_exit(void) { pci_unregister_driver(&felix_vsc9959_pci_driver); platform_driver_unregister(&seville_vsc9953_driver); } module_exit(felix_exit); MODULE_DESCRIPTION("Felix Switch driver"); MODULE_LICENSE("GPL v2");