| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * DPAA2 Ethernet Switch driver |
| * |
| * Copyright 2014-2016 Freescale Semiconductor Inc. |
| * Copyright 2017-2018 NXP |
| * |
| */ |
| |
| #include <linux/module.h> |
| |
| #include <linux/interrupt.h> |
| #include <linux/msi.h> |
| #include <linux/kthread.h> |
| #include <linux/workqueue.h> |
| |
| #include <linux/fsl/mc.h> |
| |
| #include "ethsw.h" |
| |
| static struct workqueue_struct *ethsw_owq; |
| |
| /* Minimal supported DPSW version */ |
| #define DPSW_MIN_VER_MAJOR 8 |
| #define DPSW_MIN_VER_MINOR 0 |
| |
| #define DEFAULT_VLAN_ID 1 |
| |
| static int ethsw_add_vlan(struct ethsw_core *ethsw, u16 vid) |
| { |
| int err; |
| |
| struct dpsw_vlan_cfg vcfg = { |
| .fdb_id = 0, |
| }; |
| |
| if (ethsw->vlans[vid]) { |
| dev_err(ethsw->dev, "VLAN already configured\n"); |
| return -EEXIST; |
| } |
| |
| err = dpsw_vlan_add(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, vid, &vcfg); |
| if (err) { |
| dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err); |
| return err; |
| } |
| ethsw->vlans[vid] = ETHSW_VLAN_MEMBER; |
| |
| return 0; |
| } |
| |
| static int ethsw_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid) |
| { |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct net_device *netdev = port_priv->netdev; |
| struct dpsw_tci_cfg tci_cfg = { 0 }; |
| bool is_oper; |
| int err, ret; |
| |
| err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| port_priv->idx, &tci_cfg); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_get_tci err %d\n", err); |
| return err; |
| } |
| |
| tci_cfg.vlan_id = pvid; |
| |
| /* Interface needs to be down to change PVID */ |
| is_oper = netif_oper_up(netdev); |
| if (is_oper) { |
| err = dpsw_if_disable(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port_priv->idx); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_disable err %d\n", err); |
| return err; |
| } |
| } |
| |
| err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| port_priv->idx, &tci_cfg); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_set_tci err %d\n", err); |
| goto set_tci_error; |
| } |
| |
| /* Delete previous PVID info and mark the new one */ |
| port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID; |
| port_priv->vlans[pvid] |= ETHSW_VLAN_PVID; |
| port_priv->pvid = pvid; |
| |
| set_tci_error: |
| if (is_oper) { |
| ret = dpsw_if_enable(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port_priv->idx); |
| if (ret) { |
| netdev_err(netdev, "dpsw_if_enable err %d\n", ret); |
| return ret; |
| } |
| } |
| |
| return err; |
| } |
| |
| static int ethsw_port_add_vlan(struct ethsw_port_priv *port_priv, |
| u16 vid, u16 flags) |
| { |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct net_device *netdev = port_priv->netdev; |
| struct dpsw_vlan_if_cfg vcfg; |
| int err; |
| |
| if (port_priv->vlans[vid]) { |
| netdev_warn(netdev, "VLAN %d already configured\n", vid); |
| return -EEXIST; |
| } |
| |
| vcfg.num_ifs = 1; |
| vcfg.if_id[0] = port_priv->idx; |
| err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg); |
| if (err) { |
| netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err); |
| return err; |
| } |
| |
| port_priv->vlans[vid] = ETHSW_VLAN_MEMBER; |
| |
| if (flags & BRIDGE_VLAN_INFO_UNTAGGED) { |
| err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| vid, &vcfg); |
| if (err) { |
| netdev_err(netdev, |
| "dpsw_vlan_add_if_untagged err %d\n", err); |
| return err; |
| } |
| port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED; |
| } |
| |
| if (flags & BRIDGE_VLAN_INFO_PVID) { |
| err = ethsw_port_set_pvid(port_priv, vid); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int ethsw_set_learning(struct ethsw_core *ethsw, u8 flag) |
| { |
| enum dpsw_fdb_learning_mode learn_mode; |
| int err; |
| |
| if (flag) |
| learn_mode = DPSW_FDB_LEARNING_MODE_HW; |
| else |
| learn_mode = DPSW_FDB_LEARNING_MODE_DIS; |
| |
| err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0, |
| learn_mode); |
| if (err) { |
| dev_err(ethsw->dev, "dpsw_fdb_set_learning_mode err %d\n", err); |
| return err; |
| } |
| ethsw->learning = !!flag; |
| |
| return 0; |
| } |
| |
| static int ethsw_port_set_flood(struct ethsw_port_priv *port_priv, u8 flag) |
| { |
| int err; |
| |
| err = dpsw_if_set_flooding(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, flag); |
| if (err) { |
| netdev_err(port_priv->netdev, |
| "dpsw_if_set_flooding err %d\n", err); |
| return err; |
| } |
| port_priv->flood = !!flag; |
| |
| return 0; |
| } |
| |
| static int ethsw_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state) |
| { |
| struct dpsw_stp_cfg stp_cfg = { |
| .vlan_id = DEFAULT_VLAN_ID, |
| .state = state, |
| }; |
| int err; |
| |
| if (!netif_oper_up(port_priv->netdev) || state == port_priv->stp_state) |
| return 0; /* Nothing to do */ |
| |
| err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, &stp_cfg); |
| if (err) { |
| netdev_err(port_priv->netdev, |
| "dpsw_if_set_stp err %d\n", err); |
| return err; |
| } |
| |
| port_priv->stp_state = state; |
| |
| return 0; |
| } |
| |
| static int ethsw_dellink_switch(struct ethsw_core *ethsw, u16 vid) |
| { |
| struct ethsw_port_priv *ppriv_local = NULL; |
| int i, err; |
| |
| if (!ethsw->vlans[vid]) |
| return -ENOENT; |
| |
| err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid); |
| if (err) { |
| dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err); |
| return err; |
| } |
| ethsw->vlans[vid] = 0; |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| ppriv_local = ethsw->ports[i]; |
| ppriv_local->vlans[vid] = 0; |
| } |
| |
| return 0; |
| } |
| |
| static int ethsw_port_fdb_add_uc(struct ethsw_port_priv *port_priv, |
| const unsigned char *addr) |
| { |
| struct dpsw_fdb_unicast_cfg entry = {0}; |
| int err; |
| |
| entry.if_egress = port_priv->idx; |
| entry.type = DPSW_FDB_ENTRY_STATIC; |
| ether_addr_copy(entry.mac_addr, addr); |
| |
| err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| 0, &entry); |
| if (err) |
| netdev_err(port_priv->netdev, |
| "dpsw_fdb_add_unicast err %d\n", err); |
| return err; |
| } |
| |
| static int ethsw_port_fdb_del_uc(struct ethsw_port_priv *port_priv, |
| const unsigned char *addr) |
| { |
| struct dpsw_fdb_unicast_cfg entry = {0}; |
| int err; |
| |
| entry.if_egress = port_priv->idx; |
| entry.type = DPSW_FDB_ENTRY_STATIC; |
| ether_addr_copy(entry.mac_addr, addr); |
| |
| err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| 0, &entry); |
| /* Silently discard error for calling multiple times the del command */ |
| if (err && err != -ENXIO) |
| netdev_err(port_priv->netdev, |
| "dpsw_fdb_remove_unicast err %d\n", err); |
| return err; |
| } |
| |
| static int ethsw_port_fdb_add_mc(struct ethsw_port_priv *port_priv, |
| const unsigned char *addr) |
| { |
| struct dpsw_fdb_multicast_cfg entry = {0}; |
| int err; |
| |
| ether_addr_copy(entry.mac_addr, addr); |
| entry.type = DPSW_FDB_ENTRY_STATIC; |
| entry.num_ifs = 1; |
| entry.if_id[0] = port_priv->idx; |
| |
| err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| 0, &entry); |
| /* Silently discard error for calling multiple times the add command */ |
| if (err && err != -ENXIO) |
| netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n", |
| err); |
| return err; |
| } |
| |
| static int ethsw_port_fdb_del_mc(struct ethsw_port_priv *port_priv, |
| const unsigned char *addr) |
| { |
| struct dpsw_fdb_multicast_cfg entry = {0}; |
| int err; |
| |
| ether_addr_copy(entry.mac_addr, addr); |
| entry.type = DPSW_FDB_ENTRY_STATIC; |
| entry.num_ifs = 1; |
| entry.if_id[0] = port_priv->idx; |
| |
| err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| 0, &entry); |
| /* Silently discard error for calling multiple times the del command */ |
| if (err && err != -ENAVAIL) |
| netdev_err(port_priv->netdev, |
| "dpsw_fdb_remove_multicast err %d\n", err); |
| return err; |
| } |
| |
| static void port_get_stats(struct net_device *netdev, |
| struct rtnl_link_stats64 *stats) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| u64 tmp; |
| int err; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_ING_FRAME, &stats->rx_packets); |
| if (err) |
| goto error; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_EGR_FRAME, &stats->tx_packets); |
| if (err) |
| goto error; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_ING_BYTE, &stats->rx_bytes); |
| if (err) |
| goto error; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_EGR_BYTE, &stats->tx_bytes); |
| if (err) |
| goto error; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_ING_FRAME_DISCARD, |
| &stats->rx_dropped); |
| if (err) |
| goto error; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_ING_FLTR_FRAME, |
| &tmp); |
| if (err) |
| goto error; |
| stats->rx_dropped += tmp; |
| |
| err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| DPSW_CNT_EGR_FRAME_DISCARD, |
| &stats->tx_dropped); |
| if (err) |
| goto error; |
| |
| return; |
| |
| error: |
| netdev_err(netdev, "dpsw_if_get_counter err %d\n", err); |
| } |
| |
| static bool port_has_offload_stats(const struct net_device *netdev, |
| int attr_id) |
| { |
| return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT); |
| } |
| |
| static int port_get_offload_stats(int attr_id, |
| const struct net_device *netdev, |
| void *sp) |
| { |
| switch (attr_id) { |
| case IFLA_OFFLOAD_XSTATS_CPU_HIT: |
| port_get_stats((struct net_device *)netdev, sp); |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int port_change_mtu(struct net_device *netdev, int mtu) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io, |
| 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, |
| (u16)ETHSW_L2_MAX_FRM(mtu)); |
| if (err) { |
| netdev_err(netdev, |
| "dpsw_if_set_max_frame_length() err %d\n", err); |
| return err; |
| } |
| |
| netdev->mtu = mtu; |
| return 0; |
| } |
| |
| static int port_carrier_state_sync(struct net_device *netdev) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| struct dpsw_link_state state; |
| int err; |
| |
| err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx, &state); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err); |
| return err; |
| } |
| |
| WARN_ONCE(state.up > 1, "Garbage read into link_state"); |
| |
| if (state.up != port_priv->link_state) { |
| if (state.up) |
| netif_carrier_on(netdev); |
| else |
| netif_carrier_off(netdev); |
| port_priv->link_state = state.up; |
| } |
| return 0; |
| } |
| |
| static int port_open(struct net_device *netdev) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| /* No need to allow Tx as control interface is disabled */ |
| netif_tx_stop_all_queues(netdev); |
| |
| err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_enable err %d\n", err); |
| return err; |
| } |
| |
| /* sync carrier state */ |
| err = port_carrier_state_sync(netdev); |
| if (err) { |
| netdev_err(netdev, |
| "port_carrier_state_sync err %d\n", err); |
| goto err_carrier_sync; |
| } |
| |
| return 0; |
| |
| err_carrier_sync: |
| dpsw_if_disable(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx); |
| return err; |
| } |
| |
| static int port_stop(struct net_device *netdev) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0, |
| port_priv->ethsw_data->dpsw_handle, |
| port_priv->idx); |
| if (err) { |
| netdev_err(netdev, "dpsw_if_disable err %d\n", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static netdev_tx_t port_dropframe(struct sk_buff *skb, |
| struct net_device *netdev) |
| { |
| /* we don't support I/O for now, drop the frame */ |
| dev_kfree_skb_any(skb); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static const struct net_device_ops ethsw_port_ops = { |
| .ndo_open = port_open, |
| .ndo_stop = port_stop, |
| |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_change_mtu = port_change_mtu, |
| .ndo_has_offload_stats = port_has_offload_stats, |
| .ndo_get_offload_stats = port_get_offload_stats, |
| |
| .ndo_start_xmit = port_dropframe, |
| }; |
| |
| static void ethsw_links_state_update(struct ethsw_core *ethsw) |
| { |
| int i; |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) |
| port_carrier_state_sync(ethsw->ports[i]->netdev); |
| } |
| |
| static irqreturn_t ethsw_irq0_handler_thread(int irq_num, void *arg) |
| { |
| struct device *dev = (struct device *)arg; |
| struct ethsw_core *ethsw = dev_get_drvdata(dev); |
| |
| /* Mask the events and the if_id reserved bits to be cleared on read */ |
| u32 status = DPSW_IRQ_EVENT_LINK_CHANGED | 0xFFFF0000; |
| int err; |
| |
| err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, &status); |
| if (err) { |
| dev_err(dev, "Can't get irq status (err %d)", err); |
| |
| err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, 0xFFFFFFFF); |
| if (err) |
| dev_err(dev, "Can't clear irq status (err %d)", err); |
| goto out; |
| } |
| |
| if (status & DPSW_IRQ_EVENT_LINK_CHANGED) |
| ethsw_links_state_update(ethsw); |
| |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| static int ethsw_setup_irqs(struct fsl_mc_device *sw_dev) |
| { |
| struct device *dev = &sw_dev->dev; |
| struct ethsw_core *ethsw = dev_get_drvdata(dev); |
| u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED; |
| struct fsl_mc_device_irq *irq; |
| int err; |
| |
| err = fsl_mc_allocate_irqs(sw_dev); |
| if (err) { |
| dev_err(dev, "MC irqs allocation failed\n"); |
| return err; |
| } |
| |
| if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { |
| err = -EINVAL; |
| goto free_irq; |
| } |
| |
| err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, 0); |
| if (err) { |
| dev_err(dev, "dpsw_set_irq_enable err %d\n", err); |
| goto free_irq; |
| } |
| |
| irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; |
| |
| err = devm_request_threaded_irq(dev, irq->msi_desc->irq, |
| NULL, |
| ethsw_irq0_handler_thread, |
| IRQF_NO_SUSPEND | IRQF_ONESHOT, |
| dev_name(dev), dev); |
| if (err) { |
| dev_err(dev, "devm_request_threaded_irq(): %d", err); |
| goto free_irq; |
| } |
| |
| err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, mask); |
| if (err) { |
| dev_err(dev, "dpsw_set_irq_mask(): %d", err); |
| goto free_devm_irq; |
| } |
| |
| err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, 1); |
| if (err) { |
| dev_err(dev, "dpsw_set_irq_enable(): %d", err); |
| goto free_devm_irq; |
| } |
| |
| return 0; |
| |
| free_devm_irq: |
| devm_free_irq(dev, irq->msi_desc->irq, dev); |
| free_irq: |
| fsl_mc_free_irqs(sw_dev); |
| return err; |
| } |
| |
| static void ethsw_teardown_irqs(struct fsl_mc_device *sw_dev) |
| { |
| struct device *dev = &sw_dev->dev; |
| struct ethsw_core *ethsw = dev_get_drvdata(dev); |
| int err; |
| |
| err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DPSW_IRQ_INDEX_IF, 0); |
| if (err) |
| dev_err(dev, "dpsw_set_irq_enable err %d\n", err); |
| |
| fsl_mc_free_irqs(sw_dev); |
| } |
| |
| static int swdev_port_attr_get(struct net_device *netdev, |
| struct switchdev_attr *attr) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: |
| attr->u.ppid.id_len = 1; |
| attr->u.ppid.id[0] = port_priv->ethsw_data->dev_id; |
| break; |
| case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
| attr->u.brport_flags = |
| (port_priv->ethsw_data->learning ? BR_LEARNING : 0) | |
| (port_priv->flood ? BR_FLOOD : 0); |
| break; |
| case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT: |
| attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int port_attr_stp_state_set(struct net_device *netdev, |
| struct switchdev_trans *trans, |
| u8 state) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| return ethsw_port_set_stp_state(port_priv, state); |
| } |
| |
| static int port_attr_br_flags_set(struct net_device *netdev, |
| struct switchdev_trans *trans, |
| unsigned long flags) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err = 0; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| /* Learning is enabled per switch */ |
| err = ethsw_set_learning(port_priv->ethsw_data, flags & BR_LEARNING); |
| if (err) |
| goto exit; |
| |
| err = ethsw_port_set_flood(port_priv, flags & BR_FLOOD); |
| |
| exit: |
| return err; |
| } |
| |
| static int swdev_port_attr_set(struct net_device *netdev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| int err = 0; |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
| err = port_attr_stp_state_set(netdev, trans, |
| attr->u.stp_state); |
| break; |
| case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
| err = port_attr_br_flags_set(netdev, trans, |
| attr->u.brport_flags); |
| break; |
| case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
| /* VLANs are supported by default */ |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int port_vlans_add(struct net_device *netdev, |
| const struct switchdev_obj_port_vlan *vlan, |
| struct switchdev_trans *trans) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int vid, err; |
| |
| if (netif_is_bridge_master(vlan->obj.orig_dev)) |
| return -EOPNOTSUPP; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { |
| if (!port_priv->ethsw_data->vlans[vid]) { |
| /* this is a new VLAN */ |
| err = ethsw_add_vlan(port_priv->ethsw_data, vid); |
| if (err) |
| return err; |
| |
| port_priv->ethsw_data->vlans[vid] |= ETHSW_VLAN_GLOBAL; |
| } |
| err = ethsw_port_add_vlan(port_priv, vid, vlan->flags); |
| if (err) |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int port_lookup_address(struct net_device *netdev, int is_uc, |
| const unsigned char *addr) |
| { |
| struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; |
| struct netdev_hw_addr *ha; |
| |
| netif_addr_lock_bh(netdev); |
| list_for_each_entry(ha, &list->list, list) { |
| if (ether_addr_equal(ha->addr, addr)) { |
| netif_addr_unlock_bh(netdev); |
| return 1; |
| } |
| } |
| netif_addr_unlock_bh(netdev); |
| return 0; |
| } |
| |
| static int port_mdb_add(struct net_device *netdev, |
| const struct switchdev_obj_port_mdb *mdb, |
| struct switchdev_trans *trans) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| /* Check if address is already set on this port */ |
| if (port_lookup_address(netdev, 0, mdb->addr)) |
| return -EEXIST; |
| |
| err = ethsw_port_fdb_add_mc(port_priv, mdb->addr); |
| if (err) |
| return err; |
| |
| err = dev_mc_add(netdev, mdb->addr); |
| if (err) { |
| netdev_err(netdev, "dev_mc_add err %d\n", err); |
| ethsw_port_fdb_del_mc(port_priv, mdb->addr); |
| } |
| |
| return err; |
| } |
| |
| static int swdev_port_obj_add(struct net_device *netdev, |
| const struct switchdev_obj *obj, |
| struct switchdev_trans *trans) |
| { |
| int err; |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = port_vlans_add(netdev, |
| SWITCHDEV_OBJ_PORT_VLAN(obj), |
| trans); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = port_mdb_add(netdev, |
| SWITCHDEV_OBJ_PORT_MDB(obj), |
| trans); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int ethsw_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) |
| { |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct net_device *netdev = port_priv->netdev; |
| struct dpsw_vlan_if_cfg vcfg; |
| int i, err; |
| |
| if (!port_priv->vlans[vid]) |
| return -ENOENT; |
| |
| if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { |
| err = ethsw_port_set_pvid(port_priv, 0); |
| if (err) |
| return err; |
| } |
| |
| vcfg.num_ifs = 1; |
| vcfg.if_id[0] = port_priv->idx; |
| if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { |
| err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| vid, &vcfg); |
| if (err) { |
| netdev_err(netdev, |
| "dpsw_vlan_remove_if_untagged err %d\n", |
| err); |
| } |
| port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; |
| } |
| |
| if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { |
| err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| vid, &vcfg); |
| if (err) { |
| netdev_err(netdev, |
| "dpsw_vlan_remove_if err %d\n", err); |
| return err; |
| } |
| port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; |
| |
| /* Delete VLAN from switch if it is no longer configured on |
| * any port |
| */ |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) |
| if (ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) |
| return 0; /* Found a port member in VID */ |
| |
| ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; |
| |
| err = ethsw_dellink_switch(ethsw, vid); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int port_vlans_del(struct net_device *netdev, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int vid, err; |
| |
| if (netif_is_bridge_master(vlan->obj.orig_dev)) |
| return -EOPNOTSUPP; |
| |
| for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { |
| err = ethsw_port_del_vlan(port_priv, vid); |
| if (err) |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int port_mdb_del(struct net_device *netdev, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| if (!port_lookup_address(netdev, 0, mdb->addr)) |
| return -ENOENT; |
| |
| err = ethsw_port_fdb_del_mc(port_priv, mdb->addr); |
| if (err) |
| return err; |
| |
| err = dev_mc_del(netdev, mdb->addr); |
| if (err) { |
| netdev_err(netdev, "dev_mc_del err %d\n", err); |
| return err; |
| } |
| |
| return err; |
| } |
| |
| static int swdev_port_obj_del(struct net_device *netdev, |
| const struct switchdev_obj *obj) |
| { |
| int err; |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| return err; |
| } |
| |
| static const struct switchdev_ops ethsw_port_switchdev_ops = { |
| .switchdev_port_attr_get = swdev_port_attr_get, |
| .switchdev_port_attr_set = swdev_port_attr_set, |
| .switchdev_port_obj_add = swdev_port_obj_add, |
| .switchdev_port_obj_del = swdev_port_obj_del, |
| }; |
| |
| /* For the moment, only flood setting needs to be updated */ |
| static int port_bridge_join(struct net_device *netdev, |
| struct net_device *upper_dev) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| int i, err; |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) |
| if (ethsw->ports[i]->bridge_dev && |
| (ethsw->ports[i]->bridge_dev != upper_dev)) { |
| netdev_err(netdev, |
| "Another switch port is connected to %s\n", |
| ethsw->ports[i]->bridge_dev->name); |
| return -EINVAL; |
| } |
| |
| /* Enable flooding */ |
| err = ethsw_port_set_flood(port_priv, 1); |
| if (!err) |
| port_priv->bridge_dev = upper_dev; |
| |
| return err; |
| } |
| |
| static int port_bridge_leave(struct net_device *netdev) |
| { |
| struct ethsw_port_priv *port_priv = netdev_priv(netdev); |
| int err; |
| |
| /* Disable flooding */ |
| err = ethsw_port_set_flood(port_priv, 0); |
| if (!err) |
| port_priv->bridge_dev = NULL; |
| |
| return err; |
| } |
| |
| static int port_netdevice_event(struct notifier_block *unused, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
| struct netdev_notifier_changeupper_info *info = ptr; |
| struct net_device *upper_dev; |
| int err = 0; |
| |
| if (netdev->netdev_ops != ðsw_port_ops) |
| return NOTIFY_DONE; |
| |
| /* Handle just upper dev link/unlink for the moment */ |
| if (event == NETDEV_CHANGEUPPER) { |
| upper_dev = info->upper_dev; |
| if (netif_is_bridge_master(upper_dev)) { |
| if (info->linking) |
| err = port_bridge_join(netdev, upper_dev); |
| else |
| err = port_bridge_leave(netdev); |
| } |
| } |
| |
| return notifier_from_errno(err); |
| } |
| |
| static struct notifier_block port_nb __read_mostly = { |
| .notifier_call = port_netdevice_event, |
| }; |
| |
| struct ethsw_switchdev_event_work { |
| struct work_struct work; |
| struct switchdev_notifier_fdb_info fdb_info; |
| struct net_device *dev; |
| unsigned long event; |
| }; |
| |
| static void ethsw_switchdev_event_work(struct work_struct *work) |
| { |
| struct ethsw_switchdev_event_work *switchdev_work = |
| container_of(work, struct ethsw_switchdev_event_work, work); |
| struct net_device *dev = switchdev_work->dev; |
| struct switchdev_notifier_fdb_info *fdb_info; |
| struct ethsw_port_priv *port_priv; |
| |
| rtnl_lock(); |
| port_priv = netdev_priv(dev); |
| fdb_info = &switchdev_work->fdb_info; |
| |
| switch (switchdev_work->event) { |
| case SWITCHDEV_FDB_ADD_TO_DEVICE: |
| if (is_unicast_ether_addr(fdb_info->addr)) |
| ethsw_port_fdb_add_uc(netdev_priv(dev), fdb_info->addr); |
| else |
| ethsw_port_fdb_add_mc(netdev_priv(dev), fdb_info->addr); |
| break; |
| case SWITCHDEV_FDB_DEL_TO_DEVICE: |
| if (is_unicast_ether_addr(fdb_info->addr)) |
| ethsw_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr); |
| else |
| ethsw_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr); |
| break; |
| } |
| |
| rtnl_unlock(); |
| kfree(switchdev_work->fdb_info.addr); |
| kfree(switchdev_work); |
| dev_put(dev); |
| } |
| |
| /* Called under rcu_read_lock() */ |
| static int port_switchdev_event(struct notifier_block *unused, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *dev = switchdev_notifier_info_to_dev(ptr); |
| struct ethsw_switchdev_event_work *switchdev_work; |
| struct switchdev_notifier_fdb_info *fdb_info = ptr; |
| |
| switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); |
| if (!switchdev_work) |
| return NOTIFY_BAD; |
| |
| INIT_WORK(&switchdev_work->work, ethsw_switchdev_event_work); |
| switchdev_work->dev = dev; |
| switchdev_work->event = event; |
| |
| switch (event) { |
| case SWITCHDEV_FDB_ADD_TO_DEVICE: |
| case SWITCHDEV_FDB_DEL_TO_DEVICE: |
| memcpy(&switchdev_work->fdb_info, ptr, |
| sizeof(switchdev_work->fdb_info)); |
| switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); |
| if (!switchdev_work->fdb_info.addr) |
| goto err_addr_alloc; |
| |
| ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, |
| fdb_info->addr); |
| |
| /* Take a reference on the device to avoid being freed. */ |
| dev_hold(dev); |
| break; |
| default: |
| kfree(switchdev_work); |
| return NOTIFY_DONE; |
| } |
| |
| queue_work(ethsw_owq, &switchdev_work->work); |
| |
| return NOTIFY_DONE; |
| |
| err_addr_alloc: |
| kfree(switchdev_work); |
| return NOTIFY_BAD; |
| } |
| |
| static struct notifier_block port_switchdev_nb = { |
| .notifier_call = port_switchdev_event, |
| }; |
| |
| static int ethsw_register_notifier(struct device *dev) |
| { |
| int err; |
| |
| err = register_netdevice_notifier(&port_nb); |
| if (err) { |
| dev_err(dev, "Failed to register netdev notifier\n"); |
| return err; |
| } |
| |
| err = register_switchdev_notifier(&port_switchdev_nb); |
| if (err) { |
| dev_err(dev, "Failed to register switchdev notifier\n"); |
| goto err_switchdev_nb; |
| } |
| |
| return 0; |
| |
| err_switchdev_nb: |
| unregister_netdevice_notifier(&port_nb); |
| return err; |
| } |
| |
| static int ethsw_open(struct ethsw_core *ethsw) |
| { |
| struct ethsw_port_priv *port_priv = NULL; |
| int i, err; |
| |
| err = dpsw_enable(ethsw->mc_io, 0, ethsw->dpsw_handle); |
| if (err) { |
| dev_err(ethsw->dev, "dpsw_enable err %d\n", err); |
| return err; |
| } |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| port_priv = ethsw->ports[i]; |
| err = dev_open(port_priv->netdev); |
| if (err) { |
| netdev_err(port_priv->netdev, "dev_open err %d\n", err); |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int ethsw_stop(struct ethsw_core *ethsw) |
| { |
| struct ethsw_port_priv *port_priv = NULL; |
| int i, err; |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| port_priv = ethsw->ports[i]; |
| dev_close(port_priv->netdev); |
| } |
| |
| err = dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); |
| if (err) { |
| dev_err(ethsw->dev, "dpsw_disable err %d\n", err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int ethsw_init(struct fsl_mc_device *sw_dev) |
| { |
| struct device *dev = &sw_dev->dev; |
| struct ethsw_core *ethsw = dev_get_drvdata(dev); |
| u16 version_major, version_minor, i; |
| struct dpsw_stp_cfg stp_cfg; |
| int err; |
| |
| ethsw->dev_id = sw_dev->obj_desc.id; |
| |
| err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle); |
| if (err) { |
| dev_err(dev, "dpsw_open err %d\n", err); |
| return err; |
| } |
| |
| err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| ðsw->sw_attr); |
| if (err) { |
| dev_err(dev, "dpsw_get_attributes err %d\n", err); |
| goto err_close; |
| } |
| |
| err = dpsw_get_api_version(ethsw->mc_io, 0, |
| &version_major, |
| &version_minor); |
| if (err) { |
| dev_err(dev, "dpsw_get_api_version err %d\n", err); |
| goto err_close; |
| } |
| |
| /* Minimum supported DPSW version check */ |
| if (version_major < DPSW_MIN_VER_MAJOR || |
| (version_major == DPSW_MIN_VER_MAJOR && |
| version_minor < DPSW_MIN_VER_MINOR)) { |
| dev_err(dev, "DPSW version %d:%d not supported. Use %d.%d or greater.\n", |
| version_major, |
| version_minor, |
| DPSW_MIN_VER_MAJOR, DPSW_MIN_VER_MINOR); |
| err = -ENOTSUPP; |
| goto err_close; |
| } |
| |
| err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle); |
| if (err) { |
| dev_err(dev, "dpsw_reset err %d\n", err); |
| goto err_close; |
| } |
| |
| err = dpsw_fdb_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 0, |
| DPSW_FDB_LEARNING_MODE_HW); |
| if (err) { |
| dev_err(dev, "dpsw_fdb_set_learning_mode err %d\n", err); |
| goto err_close; |
| } |
| |
| stp_cfg.vlan_id = DEFAULT_VLAN_ID; |
| stp_cfg.state = DPSW_STP_STATE_FORWARDING; |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i, |
| &stp_cfg); |
| if (err) { |
| dev_err(dev, "dpsw_if_set_stp err %d for port %d\n", |
| err, i); |
| goto err_close; |
| } |
| |
| err = dpsw_if_set_broadcast(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, i, 1); |
| if (err) { |
| dev_err(dev, |
| "dpsw_if_set_broadcast err %d for port %d\n", |
| err, i); |
| goto err_close; |
| } |
| } |
| |
| ethsw_owq = alloc_ordered_workqueue("%s_ordered", WQ_MEM_RECLAIM, |
| "ethsw"); |
| if (!ethsw_owq) { |
| err = -ENOMEM; |
| goto err_close; |
| } |
| |
| err = ethsw_register_notifier(dev); |
| if (err) |
| goto err_destroy_ordered_workqueue; |
| |
| return 0; |
| |
| err_destroy_ordered_workqueue: |
| destroy_workqueue(ethsw_owq); |
| |
| err_close: |
| dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); |
| return err; |
| } |
| |
| static int ethsw_port_init(struct ethsw_port_priv *port_priv, u16 port) |
| { |
| const char def_mcast[ETH_ALEN] = {0x01, 0x00, 0x5e, 0x00, 0x00, 0x01}; |
| struct net_device *netdev = port_priv->netdev; |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct dpsw_vlan_if_cfg vcfg; |
| int err; |
| |
| /* Switch starts with all ports configured to VLAN 1. Need to |
| * remove this setting to allow configuration at bridge join |
| */ |
| vcfg.num_ifs = 1; |
| vcfg.if_id[0] = port_priv->idx; |
| |
| err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DEFAULT_VLAN_ID, &vcfg); |
| if (err) { |
| netdev_err(netdev, "dpsw_vlan_remove_if_untagged err %d\n", |
| err); |
| return err; |
| } |
| |
| err = ethsw_port_set_pvid(port_priv, 0); |
| if (err) |
| return err; |
| |
| err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| DEFAULT_VLAN_ID, &vcfg); |
| if (err) { |
| netdev_err(netdev, "dpsw_vlan_remove_if err %d\n", err); |
| return err; |
| } |
| |
| err = ethsw_port_fdb_add_mc(port_priv, def_mcast); |
| |
| return err; |
| } |
| |
| static void ethsw_unregister_notifier(struct device *dev) |
| { |
| int err; |
| |
| err = unregister_switchdev_notifier(&port_switchdev_nb); |
| if (err) |
| dev_err(dev, |
| "Failed to unregister switchdev notifier (%d)\n", err); |
| |
| err = unregister_netdevice_notifier(&port_nb); |
| if (err) |
| dev_err(dev, |
| "Failed to unregister netdev notifier (%d)\n", err); |
| } |
| |
| static void ethsw_takedown(struct fsl_mc_device *sw_dev) |
| { |
| struct device *dev = &sw_dev->dev; |
| struct ethsw_core *ethsw = dev_get_drvdata(dev); |
| int err; |
| |
| ethsw_unregister_notifier(dev); |
| |
| err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); |
| if (err) |
| dev_warn(dev, "dpsw_close err %d\n", err); |
| } |
| |
| static int ethsw_remove(struct fsl_mc_device *sw_dev) |
| { |
| struct ethsw_port_priv *port_priv; |
| struct ethsw_core *ethsw; |
| struct device *dev; |
| int i; |
| |
| dev = &sw_dev->dev; |
| ethsw = dev_get_drvdata(dev); |
| |
| ethsw_teardown_irqs(sw_dev); |
| |
| destroy_workqueue(ethsw_owq); |
| |
| rtnl_lock(); |
| ethsw_stop(ethsw); |
| rtnl_unlock(); |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| port_priv = ethsw->ports[i]; |
| unregister_netdev(port_priv->netdev); |
| free_netdev(port_priv->netdev); |
| } |
| kfree(ethsw->ports); |
| |
| ethsw_takedown(sw_dev); |
| fsl_mc_portal_free(ethsw->mc_io); |
| |
| kfree(ethsw); |
| |
| dev_set_drvdata(dev, NULL); |
| |
| return 0; |
| } |
| |
| static int ethsw_probe_port(struct ethsw_core *ethsw, u16 port_idx) |
| { |
| struct ethsw_port_priv *port_priv; |
| struct device *dev = ethsw->dev; |
| struct net_device *port_netdev; |
| int err; |
| |
| port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); |
| if (!port_netdev) { |
| dev_err(dev, "alloc_etherdev error\n"); |
| return -ENOMEM; |
| } |
| |
| port_priv = netdev_priv(port_netdev); |
| port_priv->netdev = port_netdev; |
| port_priv->ethsw_data = ethsw; |
| |
| port_priv->idx = port_idx; |
| port_priv->stp_state = BR_STATE_FORWARDING; |
| |
| /* Flooding is implicitly enabled */ |
| port_priv->flood = true; |
| |
| SET_NETDEV_DEV(port_netdev, dev); |
| port_netdev->netdev_ops = ðsw_port_ops; |
| port_netdev->ethtool_ops = ðsw_port_ethtool_ops; |
| port_netdev->switchdev_ops = ðsw_port_switchdev_ops; |
| |
| /* Set MTU limits */ |
| port_netdev->min_mtu = ETH_MIN_MTU; |
| port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; |
| |
| err = register_netdev(port_netdev); |
| if (err < 0) { |
| dev_err(dev, "register_netdev error %d\n", err); |
| free_netdev(port_netdev); |
| return err; |
| } |
| |
| ethsw->ports[port_idx] = port_priv; |
| |
| return ethsw_port_init(port_priv, port_idx); |
| } |
| |
| static int ethsw_probe(struct fsl_mc_device *sw_dev) |
| { |
| struct device *dev = &sw_dev->dev; |
| struct ethsw_core *ethsw; |
| int i, err; |
| |
| /* Allocate switch core*/ |
| ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL); |
| |
| if (!ethsw) |
| return -ENOMEM; |
| |
| ethsw->dev = dev; |
| dev_set_drvdata(dev, ethsw); |
| |
| err = fsl_mc_portal_allocate(sw_dev, 0, ðsw->mc_io); |
| if (err) { |
| if (err == -ENXIO) |
| err = -EPROBE_DEFER; |
| else |
| dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); |
| goto err_free_drvdata; |
| } |
| |
| err = ethsw_init(sw_dev); |
| if (err) |
| goto err_free_cmdport; |
| |
| /* DEFAULT_VLAN_ID is implicitly configured on the switch */ |
| ethsw->vlans[DEFAULT_VLAN_ID] = ETHSW_VLAN_MEMBER; |
| |
| /* Learning is implicitly enabled */ |
| ethsw->learning = true; |
| |
| ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports), |
| GFP_KERNEL); |
| if (!(ethsw->ports)) { |
| err = -ENOMEM; |
| goto err_takedown; |
| } |
| |
| for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { |
| err = ethsw_probe_port(ethsw, i); |
| if (err) |
| goto err_free_ports; |
| } |
| |
| /* Switch starts up enabled */ |
| rtnl_lock(); |
| err = ethsw_open(ethsw); |
| rtnl_unlock(); |
| if (err) |
| goto err_free_ports; |
| |
| /* Setup IRQs */ |
| err = ethsw_setup_irqs(sw_dev); |
| if (err) |
| goto err_stop; |
| |
| dev_info(dev, "probed %d port switch\n", ethsw->sw_attr.num_ifs); |
| return 0; |
| |
| err_stop: |
| rtnl_lock(); |
| ethsw_stop(ethsw); |
| rtnl_unlock(); |
| |
| err_free_ports: |
| /* Cleanup registered ports only */ |
| for (i--; i >= 0; i--) { |
| unregister_netdev(ethsw->ports[i]->netdev); |
| free_netdev(ethsw->ports[i]->netdev); |
| } |
| kfree(ethsw->ports); |
| |
| err_takedown: |
| ethsw_takedown(sw_dev); |
| |
| err_free_cmdport: |
| fsl_mc_portal_free(ethsw->mc_io); |
| |
| err_free_drvdata: |
| kfree(ethsw); |
| dev_set_drvdata(dev, NULL); |
| |
| return err; |
| } |
| |
| static const struct fsl_mc_device_id ethsw_match_id_table[] = { |
| { |
| .vendor = FSL_MC_VENDOR_FREESCALE, |
| .obj_type = "dpsw", |
| }, |
| { .vendor = 0x0 } |
| }; |
| MODULE_DEVICE_TABLE(fslmc, ethsw_match_id_table); |
| |
| static struct fsl_mc_driver eth_sw_drv = { |
| .driver = { |
| .name = KBUILD_MODNAME, |
| .owner = THIS_MODULE, |
| }, |
| .probe = ethsw_probe, |
| .remove = ethsw_remove, |
| .match_id_table = ethsw_match_id_table |
| }; |
| |
| module_fsl_mc_driver(eth_sw_drv); |
| |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver"); |