// SPDX-License-Identifier: GPL-2.0 /* Copyright 2019-2021 NXP * * 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 #include #include #include "felix.h" static int felix_tag_8021q_rxvlan_add(struct felix *felix, int port, u16 vid, bool pvid, bool untagged) { struct ocelot_vcap_filter *outer_tagging_rule; struct ocelot *ocelot = &felix->ocelot; struct dsa_switch *ds = felix->ds; int key_length, upstream, err; /* We don't need to install the rxvlan into the other ports' filtering * tables, because we're just pushing the rxvlan when sending towards * the CPU */ if (!pvid) return 0; key_length = ocelot->vcap[VCAP_ES0].keys[VCAP_ES0_IGR_PORT].length; upstream = dsa_upstream_port(ds, port); outer_tagging_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL); if (!outer_tagging_rule) return -ENOMEM; outer_tagging_rule->key_type = OCELOT_VCAP_KEY_ANY; outer_tagging_rule->prio = 1; outer_tagging_rule->id.cookie = port; outer_tagging_rule->id.tc_offload = false; outer_tagging_rule->block_id = VCAP_ES0; outer_tagging_rule->type = OCELOT_VCAP_FILTER_OFFLOAD; outer_tagging_rule->lookup = 0; outer_tagging_rule->ingress_port.value = port; outer_tagging_rule->ingress_port.mask = GENMASK(key_length - 1, 0); outer_tagging_rule->egress_port.value = upstream; outer_tagging_rule->egress_port.mask = GENMASK(key_length - 1, 0); outer_tagging_rule->action.push_outer_tag = OCELOT_ES0_TAG; outer_tagging_rule->action.tag_a_tpid_sel = OCELOT_TAG_TPID_SEL_8021AD; outer_tagging_rule->action.tag_a_vid_sel = 1; outer_tagging_rule->action.vid_a_val = vid; err = ocelot_vcap_filter_add(ocelot, outer_tagging_rule, NULL); if (err) kfree(outer_tagging_rule); return err; } static int felix_tag_8021q_txvlan_add(struct felix *felix, int port, u16 vid, bool pvid, bool untagged) { struct ocelot_vcap_filter *untagging_rule, *redirect_rule; struct ocelot *ocelot = &felix->ocelot; struct dsa_switch *ds = felix->ds; int upstream, err; /* tag_8021q.c assumes we are implementing this via port VLAN * membership, which we aren't. So we don't need to add any VCAP filter * for the CPU port. */ if (ocelot->ports[port]->is_dsa_8021q_cpu) return 0; untagging_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL); if (!untagging_rule) return -ENOMEM; redirect_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL); if (!redirect_rule) { kfree(untagging_rule); return -ENOMEM; } upstream = dsa_upstream_port(ds, port); untagging_rule->key_type = OCELOT_VCAP_KEY_ANY; untagging_rule->ingress_port_mask = BIT(upstream); untagging_rule->vlan.vid.value = vid; untagging_rule->vlan.vid.mask = VLAN_VID_MASK; untagging_rule->prio = 1; untagging_rule->id.cookie = port; untagging_rule->id.tc_offload = false; untagging_rule->block_id = VCAP_IS1; untagging_rule->type = OCELOT_VCAP_FILTER_OFFLOAD; untagging_rule->lookup = 0; untagging_rule->action.vlan_pop_cnt_ena = true; untagging_rule->action.vlan_pop_cnt = 1; untagging_rule->action.pag_override_mask = 0xff; untagging_rule->action.pag_val = port; err = ocelot_vcap_filter_add(ocelot, untagging_rule, NULL); if (err) { kfree(untagging_rule); kfree(redirect_rule); return err; } redirect_rule->key_type = OCELOT_VCAP_KEY_ANY; redirect_rule->ingress_port_mask = BIT(upstream); redirect_rule->pag = port; redirect_rule->prio = 1; redirect_rule->id.cookie = port; redirect_rule->id.tc_offload = false; redirect_rule->block_id = VCAP_IS2; redirect_rule->type = OCELOT_VCAP_FILTER_OFFLOAD; redirect_rule->lookup = 0; redirect_rule->action.mask_mode = OCELOT_MASK_MODE_REDIRECT; redirect_rule->action.port_mask = BIT(port); err = ocelot_vcap_filter_add(ocelot, redirect_rule, NULL); if (err) { ocelot_vcap_filter_del(ocelot, untagging_rule); kfree(redirect_rule); return err; } return 0; } static int felix_tag_8021q_vlan_add(struct dsa_switch *ds, int port, u16 vid, u16 flags) { bool untagged = flags & BRIDGE_VLAN_INFO_UNTAGGED; bool pvid = flags & BRIDGE_VLAN_INFO_PVID; struct ocelot *ocelot = ds->priv; if (vid_is_dsa_8021q_rxvlan(vid)) return felix_tag_8021q_rxvlan_add(ocelot_to_felix(ocelot), port, vid, pvid, untagged); if (vid_is_dsa_8021q_txvlan(vid)) return felix_tag_8021q_txvlan_add(ocelot_to_felix(ocelot), port, vid, pvid, untagged); return 0; } static int felix_tag_8021q_rxvlan_del(struct felix *felix, int port, u16 vid) { struct ocelot_vcap_filter *outer_tagging_rule; struct ocelot_vcap_block *block_vcap_es0; struct ocelot *ocelot = &felix->ocelot; block_vcap_es0 = &ocelot->block[VCAP_ES0]; outer_tagging_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_es0, port, false); /* In rxvlan_add, we had the "if (!pvid) return 0" logic to avoid * installing outer tagging ES0 rules where they weren't needed. * But in rxvlan_del, the API doesn't give us the "flags" anymore, * so that forces us to be slightly sloppy here, and just assume that * if we didn't find an outer_tagging_rule it means that there was * none in the first place, i.e. rxvlan_del is called on a non-pvid * port. This is most probably true though. */ if (!outer_tagging_rule) return 0; return ocelot_vcap_filter_del(ocelot, outer_tagging_rule); } static int felix_tag_8021q_txvlan_del(struct felix *felix, int port, u16 vid) { struct ocelot_vcap_filter *untagging_rule, *redirect_rule; struct ocelot_vcap_block *block_vcap_is1; struct ocelot_vcap_block *block_vcap_is2; struct ocelot *ocelot = &felix->ocelot; int err; if (ocelot->ports[port]->is_dsa_8021q_cpu) return 0; block_vcap_is1 = &ocelot->block[VCAP_IS1]; block_vcap_is2 = &ocelot->block[VCAP_IS2]; untagging_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is1, port, false); if (!untagging_rule) return 0; err = ocelot_vcap_filter_del(ocelot, untagging_rule); if (err) return err; redirect_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, port, false); if (!redirect_rule) return 0; return ocelot_vcap_filter_del(ocelot, redirect_rule); } static int felix_tag_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid) { struct ocelot *ocelot = ds->priv; if (vid_is_dsa_8021q_rxvlan(vid)) return felix_tag_8021q_rxvlan_del(ocelot_to_felix(ocelot), port, vid); if (vid_is_dsa_8021q_txvlan(vid)) return felix_tag_8021q_txvlan_del(ocelot_to_felix(ocelot), port, vid); return 0; } /* Alternatively to using the NPI functionality, that same hardware MAC * connected internally to the enetc or fman DSA master can be configured to * use the software-defined tag_8021q frame format. As far as the hardware is * concerned, it thinks it is a "dumb switch" - the queues of the CPU port * module are now disconnected from it, but can still be accessed through * register-based MMIO. */ static void felix_8021q_cpu_port_init(struct ocelot *ocelot, int port) { ocelot->ports[port]->is_dsa_8021q_cpu = true; ocelot->npi = -1; /* Overwrite PGID_CPU with the non-tagging port */ ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, PGID_CPU); ocelot_apply_bridge_fwd_mask(ocelot); } static void felix_8021q_cpu_port_deinit(struct ocelot *ocelot, int port) { ocelot->ports[port]->is_dsa_8021q_cpu = false; /* Restore PGID_CPU */ ocelot_write_rix(ocelot, BIT(ocelot->num_phys_ports), ANA_PGID_PGID, PGID_CPU); ocelot_apply_bridge_fwd_mask(ocelot); } /* Set up a VCAP IS2 rule for delivering PTP frames to the CPU port module. * If the quirk_no_xtr_irq is in place, then also copy those PTP frames to the * tag_8021q CPU port. */ static int felix_setup_mmio_filtering(struct felix *felix) { unsigned long user_ports = 0, cpu_ports = 0; struct ocelot_vcap_filter *redirect_rule; struct ocelot_vcap_filter *tagging_rule; struct ocelot *ocelot = &felix->ocelot; struct dsa_switch *ds = felix->ds; int port, ret; tagging_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL); if (!tagging_rule) return -ENOMEM; redirect_rule = kzalloc(sizeof(struct ocelot_vcap_filter), GFP_KERNEL); if (!redirect_rule) { kfree(tagging_rule); return -ENOMEM; } for (port = 0; port < ocelot->num_phys_ports; port++) { if (dsa_is_user_port(ds, port)) user_ports |= BIT(port); if (dsa_is_cpu_port(ds, port)) cpu_ports |= BIT(port); } tagging_rule->key_type = OCELOT_VCAP_KEY_ETYPE; *(__be16 *)tagging_rule->key.etype.etype.value = htons(ETH_P_1588); *(__be16 *)tagging_rule->key.etype.etype.mask = htons(0xffff); tagging_rule->ingress_port_mask = user_ports; tagging_rule->prio = 1; tagging_rule->id.cookie = ocelot->num_phys_ports; tagging_rule->id.tc_offload = false; tagging_rule->block_id = VCAP_IS1; tagging_rule->type = OCELOT_VCAP_FILTER_OFFLOAD; tagging_rule->lookup = 0; tagging_rule->action.pag_override_mask = 0xff; tagging_rule->action.pag_val = ocelot->num_phys_ports; ret = ocelot_vcap_filter_add(ocelot, tagging_rule, NULL); if (ret) { kfree(tagging_rule); kfree(redirect_rule); return ret; } redirect_rule->key_type = OCELOT_VCAP_KEY_ANY; redirect_rule->ingress_port_mask = user_ports; redirect_rule->pag = ocelot->num_phys_ports; redirect_rule->prio = 1; redirect_rule->id.cookie = ocelot->num_phys_ports; redirect_rule->id.tc_offload = false; redirect_rule->block_id = VCAP_IS2; redirect_rule->type = OCELOT_VCAP_FILTER_OFFLOAD; redirect_rule->lookup = 0; redirect_rule->action.cpu_copy_ena = true; if (felix->info->quirk_no_xtr_irq) { /* Redirect to the tag_8021q CPU but also copy PTP packets to * the CPU port module */ redirect_rule->action.mask_mode = OCELOT_MASK_MODE_REDIRECT; redirect_rule->action.port_mask = cpu_ports; } else { /* Trap PTP packets only to the CPU port module (which is * redirected to the NPI port) */ redirect_rule->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY; redirect_rule->action.port_mask = 0; } ret = ocelot_vcap_filter_add(ocelot, redirect_rule, NULL); if (ret) { ocelot_vcap_filter_del(ocelot, tagging_rule); kfree(redirect_rule); return ret; } /* The ownership of the CPU port module's queues might have just been * transferred to the tag_8021q tagger from the NPI-based tagger. * So there might still be all sorts of crap in the queues. On the * other hand, the MMIO-based matching of PTP frames is very brittle, * so we need to be careful that there are no extra frames to be * dequeued over MMIO, since we would never know to discard them. */ ocelot_drain_cpu_queue(ocelot, 0); return 0; } static int felix_teardown_mmio_filtering(struct felix *felix) { struct ocelot_vcap_filter *tagging_rule, *redirect_rule; struct ocelot_vcap_block *block_vcap_is1; struct ocelot_vcap_block *block_vcap_is2; struct ocelot *ocelot = &felix->ocelot; int err; block_vcap_is1 = &ocelot->block[VCAP_IS1]; block_vcap_is2 = &ocelot->block[VCAP_IS2]; tagging_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is1, ocelot->num_phys_ports, false); if (!tagging_rule) return -ENOENT; err = ocelot_vcap_filter_del(ocelot, tagging_rule); if (err) return err; redirect_rule = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, ocelot->num_phys_ports, false); if (!redirect_rule) return -ENOENT; return ocelot_vcap_filter_del(ocelot, redirect_rule); } static int felix_setup_tag_8021q(struct dsa_switch *ds, int cpu) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); unsigned long cpu_flood; int port, err; felix_8021q_cpu_port_init(ocelot, cpu); for (port = 0; port < ds->num_ports; port++) { if (dsa_is_unused_port(ds, port)) continue; /* This overwrites ocelot_init(): * Do not forward BPDU frames to the CPU port module, * for 2 reasons: * - When these packets are injected from the tag_8021q * CPU port, we want them to go out, not loop back * into the system. * - STP traffic ingressing on a user port should go to * the tag_8021q CPU port, not to the hardware CPU * port module. */ ocelot_write_gix(ocelot, ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0), ANA_PORT_CPU_FWD_BPDU_CFG, port); } /* In tag_8021q mode, the CPU port module is unused, except for PTP * frames. So we want to disable flooding of any kind to the CPU port * module, since packets going there will end in a black hole. */ cpu_flood = ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)); ocelot_rmw_rix(ocelot, 0, cpu_flood, ANA_PGID_PGID, PGID_UC); ocelot_rmw_rix(ocelot, 0, cpu_flood, ANA_PGID_PGID, PGID_MC); ocelot_rmw_rix(ocelot, 0, cpu_flood, ANA_PGID_PGID, PGID_BC); err = dsa_tag_8021q_register(ds, htons(ETH_P_8021AD)); if (err) return err; err = felix_setup_mmio_filtering(felix); if (err) goto out_tag_8021q_unregister; return 0; out_tag_8021q_unregister: dsa_tag_8021q_unregister(ds); return err; } static void felix_teardown_tag_8021q(struct dsa_switch *ds, int cpu) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); int err, port; err = felix_teardown_mmio_filtering(felix); if (err) dev_err(ds->dev, "felix_teardown_mmio_filtering returned %d", err); dsa_tag_8021q_unregister(ds); for (port = 0; port < ds->num_ports; port++) { if (dsa_is_unused_port(ds, port)) continue; /* Restore the logic from ocelot_init: * do not forward BPDU frames to the front ports. */ ocelot_write_gix(ocelot, ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff), ANA_PORT_CPU_FWD_BPDU_CFG, port); } felix_8021q_cpu_port_deinit(ocelot, cpu); } /* The CPU port module is connected to the Node Processor Interface (NPI). This * is the mode through which frames can be injected from and extracted to an * external CPU, over Ethernet. In NXP SoCs, the "external CPU" is the ARM CPU * running Linux, and this forms a DSA setup together with the enetc or fman * DSA master. */ static void felix_npi_port_init(struct ocelot *ocelot, int port) { ocelot->npi = port; ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M | QSYS_EXT_CPU_CFG_EXT_CPU_PORT(port), QSYS_EXT_CPU_CFG); /* NPI port Injection/Extraction configuration */ ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_XTR_HDR, ocelot->npi_xtr_prefix); ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_INJ_HDR, ocelot->npi_inj_prefix); /* Disable transmission of pause frames */ ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0); } static void felix_npi_port_deinit(struct ocelot *ocelot, int port) { /* Restore hardware defaults */ int unused_port = ocelot->num_phys_ports + 2; ocelot->npi = -1; ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPU_PORT(unused_port), QSYS_EXT_CPU_CFG); ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_XTR_HDR, OCELOT_TAG_PREFIX_DISABLED); ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_INJ_HDR, OCELOT_TAG_PREFIX_DISABLED); /* Enable transmission of pause frames */ ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1); } static int felix_setup_tag_npi(struct dsa_switch *ds, int cpu) { struct ocelot *ocelot = ds->priv; unsigned long cpu_flood; felix_npi_port_init(ocelot, cpu); /* Include the CPU port module (and indirectly, the NPI port) * 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. * We do this because DSA does not yet perform RX filtering, * and the NPI port does not perform source address learning, * so traffic sent to Linux is effectively unknown from the * switch's perspective. */ cpu_flood = ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)); ocelot_rmw_rix(ocelot, cpu_flood, cpu_flood, ANA_PGID_PGID, PGID_UC); ocelot_rmw_rix(ocelot, cpu_flood, cpu_flood, ANA_PGID_PGID, PGID_MC); ocelot_rmw_rix(ocelot, cpu_flood, cpu_flood, ANA_PGID_PGID, PGID_BC); return 0; } static void felix_teardown_tag_npi(struct dsa_switch *ds, int cpu) { struct ocelot *ocelot = ds->priv; felix_npi_port_deinit(ocelot, cpu); } static int felix_set_tag_protocol(struct dsa_switch *ds, int cpu, enum dsa_tag_protocol proto) { int err; switch (proto) { case DSA_TAG_PROTO_SEVILLE: case DSA_TAG_PROTO_OCELOT: err = felix_setup_tag_npi(ds, cpu); break; case DSA_TAG_PROTO_OCELOT_8021Q: err = felix_setup_tag_8021q(ds, cpu); break; default: err = -EPROTONOSUPPORT; } return err; } static void felix_del_tag_protocol(struct dsa_switch *ds, int cpu, enum dsa_tag_protocol proto) { switch (proto) { case DSA_TAG_PROTO_SEVILLE: case DSA_TAG_PROTO_OCELOT: felix_teardown_tag_npi(ds, cpu); break; case DSA_TAG_PROTO_OCELOT_8021Q: felix_teardown_tag_8021q(ds, cpu); break; default: break; } } /* This always leaves the switch in a consistent state, because although the * tag_8021q setup can fail, the NPI setup can't. So either the change is made, * or the restoration is guaranteed to work. */ static int felix_change_tag_protocol(struct dsa_switch *ds, int cpu, enum dsa_tag_protocol proto) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); enum dsa_tag_protocol old_proto = felix->tag_proto; int err; if (proto != DSA_TAG_PROTO_SEVILLE && proto != DSA_TAG_PROTO_OCELOT && proto != DSA_TAG_PROTO_OCELOT_8021Q) return -EPROTONOSUPPORT; felix_del_tag_protocol(ds, cpu, old_proto); err = felix_set_tag_protocol(ds, cpu, proto); if (err) { felix_set_tag_protocol(ds, cpu, old_proto); return err; } felix->tag_proto = proto; return 0; } static enum dsa_tag_protocol felix_get_tag_protocol(struct dsa_switch *ds, int port, enum dsa_tag_protocol mp) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); return felix->tag_proto; } 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); } static int felix_mdb_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb) { struct ocelot *ocelot = ds->priv; return 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_pre_bridge_flags(struct dsa_switch *ds, int port, struct switchdev_brport_flags val, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; return ocelot_port_pre_bridge_flags(ocelot, port, val); } static int felix_bridge_flags(struct dsa_switch *ds, int port, struct switchdev_brport_flags val, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; ocelot_port_bridge_flags(ocelot, port, val); return 0; } static int felix_bridge_join(struct dsa_switch *ds, int port, struct net_device *br) { struct ocelot *ocelot = ds->priv; ocelot_port_bridge_join(ocelot, port, br); return 0; } 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); } static int felix_lag_join(struct dsa_switch *ds, int port, struct net_device *bond, struct netdev_lag_upper_info *info) { struct ocelot *ocelot = ds->priv; return ocelot_port_lag_join(ocelot, port, bond, info); } static int felix_lag_leave(struct dsa_switch *ds, int port, struct net_device *bond) { struct ocelot *ocelot = ds->priv; ocelot_port_lag_leave(ocelot, port, bond); return 0; } static int felix_lag_change(struct dsa_switch *ds, int port) { struct dsa_port *dp = dsa_to_port(ds, port); struct ocelot *ocelot = ds->priv; ocelot_port_lag_change(ocelot, port, dp->lag_tx_enabled); return 0; } static int felix_vlan_prepare(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; u16 flags = vlan->flags; /* Ocelot switches copy frames as-is to the CPU, so the flags: * egress-untagged or not, pvid or not, make no difference. This * behavior is already better than what DSA just tries to approximate * when it installs the VLAN with the same flags on the CPU port. * Just accept any configuration, and don't let ocelot deny installing * multiple native VLANs on the NPI port, because the switch doesn't * look at the port tag settings towards the NPI interface anyway. */ if (port == ocelot->npi) return 0; return ocelot_vlan_prepare(ocelot, port, vlan->vid, flags & BRIDGE_VLAN_INFO_PVID, flags & BRIDGE_VLAN_INFO_UNTAGGED, extack); } static int felix_vlan_filtering(struct dsa_switch *ds, int port, bool enabled, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; return ocelot_port_vlan_filtering(ocelot, port, enabled, extack); } static int felix_vlan_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; u16 flags = vlan->flags; int err; err = felix_vlan_prepare(ds, port, vlan, extack); if (err) return err; return ocelot_vlan_add(ocelot, port, vlan->vid, flags & BRIDGE_VLAN_INFO_PVID, flags & BRIDGE_VLAN_INFO_UNTAGGED); } static int felix_vlan_del(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) { struct ocelot *ocelot = ds->priv; return ocelot_vlan_del(ocelot, port, vlan->vid); } 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 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); struct dsa_port *dp = dsa_to_port(ds, port); if (felix->pcs[port]) phylink_set_pcs(dp->pl, &felix->pcs[port]->pcs); } 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; ocelot_phylink_mac_link_down(ocelot, port, link_an_mode, interface, FELIX_MAC_QUIRKS); } 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 felix *felix = ocelot_to_felix(ocelot); ocelot_phylink_mac_link_up(ocelot, port, phydev, link_an_mode, interface, speed, duplex, tx_pause, rx_pause, FELIX_MAC_QUIRKS); 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 < OCELOT_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) ports_node = of_get_child_by_name(switch_node, "ethernet-ports"); if (!ports_node) { dev_err(dev, "Incorrect bindings: absent \"ports\" or \"ethernet-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->num_mact_rows = felix->info->num_mact_rows; ocelot->vcap = felix->info->vcap; ocelot->ops = felix->info->ops; ocelot->npi_inj_prefix = OCELOT_TAG_PREFIX_SHORT; ocelot->npi_xtr_prefix = OCELOT_TAG_PREFIX_SHORT; ocelot->devlink = felix->ds->devlink; 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; 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); } ocelot_port->phy_mode = port_phy_modes[port]; ocelot_port->ocelot = ocelot; ocelot_port->target = target; ocelot->ports[port] = 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; } /* 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; err = felix_init_structs(felix, ds->num_ports); if (err) return err; err = ocelot_init(ocelot); if (err) goto out_mdiobus_free; if (ocelot->ptp) { err = ocelot_init_timestamp(ocelot, felix->info->ptp_caps); if (err) { dev_err(ocelot->dev, "Timestamp initialization failed\n"); ocelot->ptp = 0; } } for (port = 0; port < ds->num_ports; port++) { if (dsa_is_unused_port(ds, port)) continue; ocelot_init_port(ocelot, port); /* Set the default QoS Classification based on PCP and DEI * bits of vlan tag. */ felix_port_qos_map_init(ocelot, port); } err = ocelot_devlink_sb_register(ocelot); if (err) goto out_deinit_ports; for (port = 0; port < ds->num_ports; port++) { if (!dsa_is_cpu_port(ds, port)) continue; /* The initial tag protocol is NPI which always returns 0, so * there's no real point in checking for errors. */ felix_set_tag_protocol(ds, port, felix->tag_proto); } ds->mtu_enforcement_ingress = true; ds->assisted_learning_on_cpu_port = true; return 0; out_deinit_ports: for (port = 0; port < ocelot->num_phys_ports; port++) { if (dsa_is_unused_port(ds, port)) continue; ocelot_deinit_port(ocelot, port); } ocelot_deinit_timestamp(ocelot); ocelot_deinit(ocelot); out_mdiobus_free: if (felix->info->mdio_bus_free) felix->info->mdio_bus_free(ocelot); return err; } static void felix_teardown(struct dsa_switch *ds) { struct ocelot *ocelot = ds->priv; struct felix *felix = ocelot_to_felix(ocelot); int port; for (port = 0; port < ds->num_ports; port++) { if (!dsa_is_cpu_port(ds, port)) continue; felix_del_tag_protocol(ds, port, felix->tag_proto); } ocelot_devlink_sb_unregister(ocelot); ocelot_deinit_timestamp(ocelot); ocelot_deinit(ocelot); for (port = 0; port < ocelot->num_phys_ports; port++) { if (dsa_is_unused_port(ds, port)) continue; ocelot_deinit_port(ocelot, port); } if (felix->info->mdio_bus_free) felix->info->mdio_bus_free(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_check_xtr_pkt(struct ocelot *ocelot, unsigned int ptp_type) { struct felix *felix = ocelot_to_felix(ocelot); int err, grp = 0; if (felix->tag_proto != DSA_TAG_PROTO_OCELOT_8021Q) return false; if (!felix->info->quirk_no_xtr_irq) return false; if (ptp_type == PTP_CLASS_NONE) return false; while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) { struct sk_buff *skb; unsigned int type; err = ocelot_xtr_poll_frame(ocelot, grp, &skb); if (err) goto out; /* We trap to the CPU port module all PTP frames, but * felix_rxtstamp() only gets called for event frames. * So we need to avoid sending duplicate general * message frames by running a second BPF classifier * here and dropping those. */ __skb_push(skb, ETH_HLEN); type = ptp_classify_raw(skb); __skb_pull(skb, ETH_HLEN); if (type == PTP_CLASS_NONE) { kfree_skb(skb); continue; } netif_rx(skb); } out: if (err < 0) ocelot_drain_cpu_queue(ocelot, 0); return true; } static bool felix_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb, unsigned int type) { u8 *extraction = skb->data - ETH_HLEN - OCELOT_TAG_LEN; struct skb_shared_hwtstamps *shhwtstamps; struct ocelot *ocelot = ds->priv; u32 tstamp_lo, tstamp_hi; struct timespec64 ts; u64 tstamp, val; /* If the "no XTR IRQ" workaround is in use, tell DSA to defer this skb * for RX timestamping. Then free it, and poll for its copy through * MMIO in the CPU port module, and inject that into the stack from * ocelot_xtr_poll(). */ if (felix_check_xtr_pkt(ocelot, type)) { kfree_skb(skb); return true; } ocelot_ptp_gettime64(&ocelot->ptp_info, &ts); tstamp = ktime_set(ts.tv_sec, ts.tv_nsec); ocelot_xfh_get_rew_val(extraction, &val); 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 void felix_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb) { struct ocelot *ocelot = ds->priv; struct sk_buff *clone = NULL; if (!ocelot->ptp) return; if (ocelot_port_txtstamp_request(ocelot, port, skb, &clone)) return; if (clone) OCELOT_SKB_CB(skb)->clone = clone; } 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; } static int felix_sb_pool_get(struct dsa_switch *ds, unsigned int sb_index, u16 pool_index, struct devlink_sb_pool_info *pool_info) { struct ocelot *ocelot = ds->priv; return ocelot_sb_pool_get(ocelot, sb_index, pool_index, pool_info); } static int felix_sb_pool_set(struct dsa_switch *ds, unsigned int sb_index, u16 pool_index, u32 size, enum devlink_sb_threshold_type threshold_type, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; return ocelot_sb_pool_set(ocelot, sb_index, pool_index, size, threshold_type, extack); } static int felix_sb_port_pool_get(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 *p_threshold) { struct ocelot *ocelot = ds->priv; return ocelot_sb_port_pool_get(ocelot, port, sb_index, pool_index, p_threshold); } static int felix_sb_port_pool_set(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 threshold, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; return ocelot_sb_port_pool_set(ocelot, port, sb_index, pool_index, threshold, extack); } static int felix_sb_tc_pool_bind_get(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u16 *p_pool_index, u32 *p_threshold) { struct ocelot *ocelot = ds->priv; return ocelot_sb_tc_pool_bind_get(ocelot, port, sb_index, tc_index, pool_type, p_pool_index, p_threshold); } static int felix_sb_tc_pool_bind_set(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u16 pool_index, u32 threshold, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; return ocelot_sb_tc_pool_bind_set(ocelot, port, sb_index, tc_index, pool_type, pool_index, threshold, extack); } static int felix_sb_occ_snapshot(struct dsa_switch *ds, unsigned int sb_index) { struct ocelot *ocelot = ds->priv; return ocelot_sb_occ_snapshot(ocelot, sb_index); } static int felix_sb_occ_max_clear(struct dsa_switch *ds, unsigned int sb_index) { struct ocelot *ocelot = ds->priv; return ocelot_sb_occ_max_clear(ocelot, sb_index); } static int felix_sb_occ_port_pool_get(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 *p_cur, u32 *p_max) { struct ocelot *ocelot = ds->priv; return ocelot_sb_occ_port_pool_get(ocelot, port, sb_index, pool_index, p_cur, p_max); } static int felix_sb_occ_tc_port_bind_get(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u32 *p_cur, u32 *p_max) { struct ocelot *ocelot = ds->priv; return ocelot_sb_occ_tc_port_bind_get(ocelot, port, sb_index, tc_index, pool_type, p_cur, p_max); } static int felix_mrp_add(struct dsa_switch *ds, int port, const struct switchdev_obj_mrp *mrp) { struct ocelot *ocelot = ds->priv; return ocelot_mrp_add(ocelot, port, mrp); } static int felix_mrp_del(struct dsa_switch *ds, int port, const struct switchdev_obj_mrp *mrp) { struct ocelot *ocelot = ds->priv; return ocelot_mrp_add(ocelot, port, mrp); } static int felix_mrp_add_ring_role(struct dsa_switch *ds, int port, const struct switchdev_obj_ring_role_mrp *mrp) { struct ocelot *ocelot = ds->priv; return ocelot_mrp_add_ring_role(ocelot, port, mrp); } static int felix_mrp_del_ring_role(struct dsa_switch *ds, int port, const struct switchdev_obj_ring_role_mrp *mrp) { struct ocelot *ocelot = ds->priv; return ocelot_mrp_del_ring_role(ocelot, port, mrp); } const struct dsa_switch_ops felix_switch_ops = { .get_tag_protocol = felix_get_tag_protocol, .change_tag_protocol = felix_change_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_config = felix_phylink_mac_config, .phylink_mac_link_down = felix_phylink_mac_link_down, .phylink_mac_link_up = felix_phylink_mac_link_up, .port_fdb_dump = felix_fdb_dump, .port_fdb_add = felix_fdb_add, .port_fdb_del = felix_fdb_del, .port_mdb_add = felix_mdb_add, .port_mdb_del = felix_mdb_del, .port_pre_bridge_flags = felix_pre_bridge_flags, .port_bridge_flags = felix_bridge_flags, .port_bridge_join = felix_bridge_join, .port_bridge_leave = felix_bridge_leave, .port_lag_join = felix_lag_join, .port_lag_leave = felix_lag_leave, .port_lag_change = felix_lag_change, .port_stp_state_set = felix_bridge_stp_state_set, .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, .devlink_sb_pool_get = felix_sb_pool_get, .devlink_sb_pool_set = felix_sb_pool_set, .devlink_sb_port_pool_get = felix_sb_port_pool_get, .devlink_sb_port_pool_set = felix_sb_port_pool_set, .devlink_sb_tc_pool_bind_get = felix_sb_tc_pool_bind_get, .devlink_sb_tc_pool_bind_set = felix_sb_tc_pool_bind_set, .devlink_sb_occ_snapshot = felix_sb_occ_snapshot, .devlink_sb_occ_max_clear = felix_sb_occ_max_clear, .devlink_sb_occ_port_pool_get = felix_sb_occ_port_pool_get, .devlink_sb_occ_tc_port_bind_get= felix_sb_occ_tc_port_bind_get, .port_mrp_add = felix_mrp_add, .port_mrp_del = felix_mrp_del, .port_mrp_add_ring_role = felix_mrp_add_ring_role, .port_mrp_del_ring_role = felix_mrp_del_ring_role, .tag_8021q_vlan_add = felix_tag_8021q_vlan_add, .tag_8021q_vlan_del = felix_tag_8021q_vlan_del, }; struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port) { struct felix *felix = ocelot_to_felix(ocelot); struct dsa_switch *ds = felix->ds; if (!dsa_is_user_port(ds, port)) return NULL; return dsa_to_port(ds, port)->slave; } int felix_netdev_to_port(struct net_device *dev) { struct dsa_port *dp; dp = dsa_port_from_netdev(dev); if (IS_ERR(dp)) return -EINVAL; return dp->index; }