// SPDX-License-Identifier: (GPL-2.0 OR MIT) /* * Microsemi Ocelot Switch driver * * Copyright (c) 2017 Microsemi Corporation */ #include #include #include #include #include "ocelot.h" #include "ocelot_vcap.h" #define TABLE_UPDATE_SLEEP_US 10 #define TABLE_UPDATE_TIMEOUT_US 100000 struct ocelot_mact_entry { u8 mac[ETH_ALEN]; u16 vid; enum macaccess_entry_type type; }; /* Caller must hold &ocelot->mact_lock */ static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot) { return ocelot_read(ocelot, ANA_TABLES_MACACCESS); } /* Caller must hold &ocelot->mact_lock */ static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot) { u32 val; return readx_poll_timeout(ocelot_mact_read_macaccess, ocelot, val, (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) == MACACCESS_CMD_IDLE, TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); } /* Caller must hold &ocelot->mact_lock */ static void ocelot_mact_select(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN], unsigned int vid) { u32 macl = 0, mach = 0; /* Set the MAC address to handle and the vlan associated in a format * understood by the hardware. */ mach |= vid << 16; mach |= mac[0] << 8; mach |= mac[1] << 0; macl |= mac[2] << 24; macl |= mac[3] << 16; macl |= mac[4] << 8; macl |= mac[5] << 0; ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA); ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA); } int ocelot_mact_learn(struct ocelot *ocelot, int port, const unsigned char mac[ETH_ALEN], unsigned int vid, enum macaccess_entry_type type) { u32 cmd = ANA_TABLES_MACACCESS_VALID | ANA_TABLES_MACACCESS_DEST_IDX(port) | ANA_TABLES_MACACCESS_ENTRYTYPE(type) | ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN); unsigned int mc_ports; int err; /* Set MAC_CPU_COPY if the CPU port is used by a multicast entry */ if (type == ENTRYTYPE_MACv4) mc_ports = (mac[1] << 8) | mac[2]; else if (type == ENTRYTYPE_MACv6) mc_ports = (mac[0] << 8) | mac[1]; else mc_ports = 0; if (mc_ports & BIT(ocelot->num_phys_ports)) cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY; mutex_lock(&ocelot->mact_lock); ocelot_mact_select(ocelot, mac, vid); /* Issue a write command */ ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS); err = ocelot_mact_wait_for_completion(ocelot); mutex_unlock(&ocelot->mact_lock); return err; } EXPORT_SYMBOL(ocelot_mact_learn); int ocelot_mact_forget(struct ocelot *ocelot, const unsigned char mac[ETH_ALEN], unsigned int vid) { int err; mutex_lock(&ocelot->mact_lock); ocelot_mact_select(ocelot, mac, vid); /* Issue a forget command */ ocelot_write(ocelot, ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET), ANA_TABLES_MACACCESS); err = ocelot_mact_wait_for_completion(ocelot); mutex_unlock(&ocelot->mact_lock); return err; } EXPORT_SYMBOL(ocelot_mact_forget); static void ocelot_mact_init(struct ocelot *ocelot) { /* Configure the learning mode entries attributes: * - Do not copy the frame to the CPU extraction queues. * - Use the vlan and mac_cpoy for dmac lookup. */ ocelot_rmw(ocelot, 0, ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS | ANA_AGENCTRL_LEARN_FWD_KILL | ANA_AGENCTRL_LEARN_IGNORE_VLAN, ANA_AGENCTRL); /* Clear the MAC table. We are not concurrent with anyone, so * holding &ocelot->mact_lock is pointless. */ ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS); } static void ocelot_vcap_enable(struct ocelot *ocelot, int port) { ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA | ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa), ANA_PORT_VCAP_S2_CFG, port); ocelot_write_gix(ocelot, ANA_PORT_VCAP_CFG_S1_ENA, ANA_PORT_VCAP_CFG, port); ocelot_rmw_gix(ocelot, REW_PORT_CFG_ES0_EN, REW_PORT_CFG_ES0_EN, REW_PORT_CFG, port); } static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot) { return ocelot_read(ocelot, ANA_TABLES_VLANACCESS); } static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot) { u32 val; return readx_poll_timeout(ocelot_vlant_read_vlanaccess, ocelot, val, (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) == ANA_TABLES_VLANACCESS_CMD_IDLE, TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); } static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask) { /* Select the VID to configure */ ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid), ANA_TABLES_VLANTIDX); /* Set the vlan port members mask and issue a write command */ ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) | ANA_TABLES_VLANACCESS_CMD_WRITE, ANA_TABLES_VLANACCESS); return ocelot_vlant_wait_for_completion(ocelot); } static int ocelot_port_num_untagged_vlans(struct ocelot *ocelot, int port) { struct ocelot_bridge_vlan *vlan; int num_untagged = 0; list_for_each_entry(vlan, &ocelot->vlans, list) { if (!(vlan->portmask & BIT(port))) continue; if (vlan->untagged & BIT(port)) num_untagged++; } return num_untagged; } static int ocelot_port_num_tagged_vlans(struct ocelot *ocelot, int port) { struct ocelot_bridge_vlan *vlan; int num_tagged = 0; list_for_each_entry(vlan, &ocelot->vlans, list) { if (!(vlan->portmask & BIT(port))) continue; if (!(vlan->untagged & BIT(port))) num_tagged++; } return num_tagged; } /* We use native VLAN when we have to mix egress-tagged VLANs with exactly * _one_ egress-untagged VLAN (_the_ native VLAN) */ static bool ocelot_port_uses_native_vlan(struct ocelot *ocelot, int port) { return ocelot_port_num_tagged_vlans(ocelot, port) && ocelot_port_num_untagged_vlans(ocelot, port) == 1; } static struct ocelot_bridge_vlan * ocelot_port_find_native_vlan(struct ocelot *ocelot, int port) { struct ocelot_bridge_vlan *vlan; list_for_each_entry(vlan, &ocelot->vlans, list) if (vlan->portmask & BIT(port) && vlan->untagged & BIT(port)) return vlan; return NULL; } /* Keep in sync REW_TAG_CFG_TAG_CFG and, if applicable, * REW_PORT_VLAN_CFG_PORT_VID, with the bridge VLAN table and VLAN awareness * state of the port. */ static void ocelot_port_manage_port_tag(struct ocelot *ocelot, int port) { struct ocelot_port *ocelot_port = ocelot->ports[port]; enum ocelot_port_tag_config tag_cfg; bool uses_native_vlan = false; if (ocelot_port->vlan_aware) { uses_native_vlan = ocelot_port_uses_native_vlan(ocelot, port); if (uses_native_vlan) tag_cfg = OCELOT_PORT_TAG_NATIVE; else if (ocelot_port_num_untagged_vlans(ocelot, port)) tag_cfg = OCELOT_PORT_TAG_DISABLED; else tag_cfg = OCELOT_PORT_TAG_TRUNK; } else { tag_cfg = OCELOT_PORT_TAG_DISABLED; } ocelot_rmw_gix(ocelot, REW_TAG_CFG_TAG_CFG(tag_cfg), REW_TAG_CFG_TAG_CFG_M, REW_TAG_CFG, port); if (uses_native_vlan) { struct ocelot_bridge_vlan *native_vlan; /* Not having a native VLAN is impossible, because * ocelot_port_num_untagged_vlans has returned 1. * So there is no use in checking for NULL here. */ native_vlan = ocelot_port_find_native_vlan(ocelot, port); ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_VID(native_vlan->vid), REW_PORT_VLAN_CFG_PORT_VID_M, REW_PORT_VLAN_CFG, port); } } /* Default vlan to clasify for untagged frames (may be zero) */ static void ocelot_port_set_pvid(struct ocelot *ocelot, int port, const struct ocelot_bridge_vlan *pvid_vlan) { struct ocelot_port *ocelot_port = ocelot->ports[port]; u16 pvid = OCELOT_VLAN_UNAWARE_PVID; u32 val = 0; ocelot_port->pvid_vlan = pvid_vlan; if (ocelot_port->vlan_aware && pvid_vlan) pvid = pvid_vlan->vid; ocelot_rmw_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(pvid), ANA_PORT_VLAN_CFG_VLAN_VID_M, ANA_PORT_VLAN_CFG, port); /* If there's no pvid, we should drop not only untagged traffic (which * happens automatically), but also 802.1p traffic which gets * classified to VLAN 0, but that is always in our RX filter, so it * would get accepted were it not for this setting. */ if (!pvid_vlan && ocelot_port->vlan_aware) val = ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA; ocelot_rmw_gix(ocelot, val, ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA, ANA_PORT_DROP_CFG, port); } static struct ocelot_bridge_vlan *ocelot_bridge_vlan_find(struct ocelot *ocelot, u16 vid) { struct ocelot_bridge_vlan *vlan; list_for_each_entry(vlan, &ocelot->vlans, list) if (vlan->vid == vid) return vlan; return NULL; } static int ocelot_vlan_member_add(struct ocelot *ocelot, int port, u16 vid, bool untagged) { struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid); unsigned long portmask; int err; if (vlan) { portmask = vlan->portmask | BIT(port); err = ocelot_vlant_set_mask(ocelot, vid, portmask); if (err) return err; vlan->portmask = portmask; /* Bridge VLANs can be overwritten with a different * egress-tagging setting, so make sure to override an untagged * with a tagged VID if that's going on. */ if (untagged) vlan->untagged |= BIT(port); else vlan->untagged &= ~BIT(port); return 0; } vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); if (!vlan) return -ENOMEM; portmask = BIT(port); err = ocelot_vlant_set_mask(ocelot, vid, portmask); if (err) { kfree(vlan); return err; } vlan->vid = vid; vlan->portmask = portmask; if (untagged) vlan->untagged = BIT(port); INIT_LIST_HEAD(&vlan->list); list_add_tail(&vlan->list, &ocelot->vlans); return 0; } static int ocelot_vlan_member_del(struct ocelot *ocelot, int port, u16 vid) { struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid); unsigned long portmask; int err; if (!vlan) return 0; portmask = vlan->portmask & ~BIT(port); err = ocelot_vlant_set_mask(ocelot, vid, portmask); if (err) return err; vlan->portmask = portmask; if (vlan->portmask) return 0; list_del(&vlan->list); kfree(vlan); return 0; } int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port, bool vlan_aware, struct netlink_ext_ack *extack) { struct ocelot_vcap_block *block = &ocelot->block[VCAP_IS1]; struct ocelot_port *ocelot_port = ocelot->ports[port]; struct ocelot_vcap_filter *filter; u32 val; list_for_each_entry(filter, &block->rules, list) { if (filter->ingress_port_mask & BIT(port) && filter->action.vid_replace_ena) { NL_SET_ERR_MSG_MOD(extack, "Cannot change VLAN state with vlan modify rules active"); return -EBUSY; } } ocelot_port->vlan_aware = vlan_aware; if (vlan_aware) val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1); else val = 0; ocelot_rmw_gix(ocelot, val, ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M, ANA_PORT_VLAN_CFG, port); ocelot_port_set_pvid(ocelot, port, ocelot_port->pvid_vlan); ocelot_port_manage_port_tag(ocelot, port); return 0; } EXPORT_SYMBOL(ocelot_port_vlan_filtering); int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid, bool untagged, struct netlink_ext_ack *extack) { if (untagged) { /* We are adding an egress-tagged VLAN */ if (ocelot_port_uses_native_vlan(ocelot, port)) { NL_SET_ERR_MSG_MOD(extack, "Port with egress-tagged VLANs cannot have more than one egress-untagged (native) VLAN"); return -EBUSY; } } else { /* We are adding an egress-tagged VLAN */ if (ocelot_port_num_untagged_vlans(ocelot, port) > 1) { NL_SET_ERR_MSG_MOD(extack, "Port with more than one egress-untagged VLAN cannot have egress-tagged VLANs"); return -EBUSY; } } return 0; } EXPORT_SYMBOL(ocelot_vlan_prepare); int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid, bool untagged) { int err; err = ocelot_vlan_member_add(ocelot, port, vid, untagged); if (err) return err; /* Default ingress vlan classification */ if (pvid) ocelot_port_set_pvid(ocelot, port, ocelot_bridge_vlan_find(ocelot, vid)); /* Untagged egress vlan clasification */ ocelot_port_manage_port_tag(ocelot, port); return 0; } EXPORT_SYMBOL(ocelot_vlan_add); int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int err; err = ocelot_vlan_member_del(ocelot, port, vid); if (err) return err; /* Ingress */ if (ocelot_port->pvid_vlan && ocelot_port->pvid_vlan->vid == vid) ocelot_port_set_pvid(ocelot, port, NULL); /* Egress */ ocelot_port_manage_port_tag(ocelot, port); return 0; } EXPORT_SYMBOL(ocelot_vlan_del); static void ocelot_vlan_init(struct ocelot *ocelot) { unsigned long all_ports = GENMASK(ocelot->num_phys_ports - 1, 0); u16 port, vid; /* Clear VLAN table, by default all ports are members of all VLANs */ ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT, ANA_TABLES_VLANACCESS); ocelot_vlant_wait_for_completion(ocelot); /* Configure the port VLAN memberships */ for (vid = 1; vid < VLAN_N_VID; vid++) ocelot_vlant_set_mask(ocelot, vid, 0); /* Because VLAN filtering is enabled, we need VID 0 to get untagged * traffic. It is added automatically if 8021q module is loaded, but * we can't rely on it since module may be not loaded. */ ocelot_vlant_set_mask(ocelot, OCELOT_VLAN_UNAWARE_PVID, all_ports); /* Set vlan ingress filter mask to all ports but the CPU port by * default. */ ocelot_write(ocelot, all_ports, ANA_VLANMASK); for (port = 0; port < ocelot->num_phys_ports; port++) { ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port); ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port); } } static u32 ocelot_read_eq_avail(struct ocelot *ocelot, int port) { return ocelot_read_rix(ocelot, QSYS_SW_STATUS, port); } static int ocelot_port_flush(struct ocelot *ocelot, int port) { unsigned int pause_ena; int err, val; /* Disable dequeuing from the egress queues */ ocelot_rmw_rix(ocelot, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE, port); /* Disable flow control */ ocelot_fields_read(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, &pause_ena); ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0); /* Disable priority flow control */ ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_TX_PFC_ENA, 0); /* Wait at least the time it takes to receive a frame of maximum length * at the port. * Worst-case delays for 10 kilobyte jumbo frames are: * 8 ms on a 10M port * 800 μs on a 100M port * 80 μs on a 1G port * 32 μs on a 2.5G port */ usleep_range(8000, 10000); /* Disable half duplex backpressure. */ ocelot_rmw_rix(ocelot, 0, SYS_FRONT_PORT_MODE_HDX_MODE, SYS_FRONT_PORT_MODE, port); /* Flush the queues associated with the port. */ ocelot_rmw_gix(ocelot, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG, port); /* Enable dequeuing from the egress queues. */ ocelot_rmw_rix(ocelot, 0, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE, port); /* Wait until flushing is complete. */ err = read_poll_timeout(ocelot_read_eq_avail, val, !val, 100, 2000000, false, ocelot, port); /* Clear flushing again. */ ocelot_rmw_gix(ocelot, 0, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG, port); /* Re-enable flow control */ ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, pause_ena); return err; } void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port, unsigned int link_an_mode, phy_interface_t interface, unsigned long quirks) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int err; ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA, DEV_MAC_ENA_CFG); ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0); err = ocelot_port_flush(ocelot, port); if (err) dev_err(ocelot->dev, "failed to flush port %d: %d\n", port, err); /* Put the port in reset. */ if (interface != PHY_INTERFACE_MODE_QSGMII || !(quirks & OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP)) ocelot_port_rmwl(ocelot_port, DEV_CLOCK_CFG_MAC_TX_RST | DEV_CLOCK_CFG_MAC_RX_RST, DEV_CLOCK_CFG_MAC_TX_RST | DEV_CLOCK_CFG_MAC_RX_RST, DEV_CLOCK_CFG); } EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_down); void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port, struct phy_device *phydev, unsigned int link_an_mode, phy_interface_t interface, int speed, int duplex, bool tx_pause, bool rx_pause, unsigned long quirks) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int mac_speed, mode = 0; u32 mac_fc_cfg; /* The MAC might be integrated in systems where 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). */ if ((quirks & OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION) || speed == SPEED_1000) { mac_speed = OCELOT_SPEED_1000; mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; } else if (speed == SPEED_2500) { mac_speed = OCELOT_SPEED_2500; mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; } else if (speed == SPEED_100) { mac_speed = OCELOT_SPEED_100; } else { mac_speed = OCELOT_SPEED_10; } if (duplex == DUPLEX_FULL) mode |= DEV_MAC_MODE_CFG_FDX_ENA; ocelot_port_writel(ocelot_port, mode, DEV_MAC_MODE_CFG); /* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and * PORT_RST bits in DEV_CLOCK_CFG. */ ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(mac_speed), DEV_CLOCK_CFG); switch (speed) { case SPEED_10: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_10); break; case SPEED_100: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_100); break; case SPEED_1000: case SPEED_2500: mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_1000); 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); ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, tx_pause); /* Undo the effects of ocelot_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); /* Core: Enable port for frame transfer */ ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1); } EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_up); static int ocelot_port_add_txtstamp_skb(struct ocelot *ocelot, int port, struct sk_buff *clone) { struct ocelot_port *ocelot_port = ocelot->ports[port]; unsigned long flags; spin_lock_irqsave(&ocelot->ts_id_lock, flags); if (ocelot_port->ptp_skbs_in_flight == OCELOT_MAX_PTP_ID || ocelot->ptp_skbs_in_flight == OCELOT_PTP_FIFO_SIZE) { spin_unlock_irqrestore(&ocelot->ts_id_lock, flags); return -EBUSY; } skb_shinfo(clone)->tx_flags |= SKBTX_IN_PROGRESS; /* Store timestamp ID in OCELOT_SKB_CB(clone)->ts_id */ OCELOT_SKB_CB(clone)->ts_id = ocelot_port->ts_id; ocelot_port->ts_id++; if (ocelot_port->ts_id == OCELOT_MAX_PTP_ID) ocelot_port->ts_id = 0; ocelot_port->ptp_skbs_in_flight++; ocelot->ptp_skbs_in_flight++; skb_queue_tail(&ocelot_port->tx_skbs, clone); spin_unlock_irqrestore(&ocelot->ts_id_lock, flags); return 0; } static bool ocelot_ptp_is_onestep_sync(struct sk_buff *skb, unsigned int ptp_class) { struct ptp_header *hdr; u8 msgtype, twostep; hdr = ptp_parse_header(skb, ptp_class); if (!hdr) return false; msgtype = ptp_get_msgtype(hdr, ptp_class); twostep = hdr->flag_field[0] & 0x2; if (msgtype == PTP_MSGTYPE_SYNC && twostep == 0) return true; return false; } int ocelot_port_txtstamp_request(struct ocelot *ocelot, int port, struct sk_buff *skb, struct sk_buff **clone) { struct ocelot_port *ocelot_port = ocelot->ports[port]; u8 ptp_cmd = ocelot_port->ptp_cmd; unsigned int ptp_class; int err; /* Don't do anything if PTP timestamping not enabled */ if (!ptp_cmd) return 0; ptp_class = ptp_classify_raw(skb); if (ptp_class == PTP_CLASS_NONE) return -EINVAL; /* Store ptp_cmd in OCELOT_SKB_CB(skb)->ptp_cmd */ if (ptp_cmd == IFH_REW_OP_ORIGIN_PTP) { if (ocelot_ptp_is_onestep_sync(skb, ptp_class)) { OCELOT_SKB_CB(skb)->ptp_cmd = ptp_cmd; return 0; } /* Fall back to two-step timestamping */ ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; } if (ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) { *clone = skb_clone_sk(skb); if (!(*clone)) return -ENOMEM; err = ocelot_port_add_txtstamp_skb(ocelot, port, *clone); if (err) return err; OCELOT_SKB_CB(skb)->ptp_cmd = ptp_cmd; OCELOT_SKB_CB(*clone)->ptp_class = ptp_class; } return 0; } EXPORT_SYMBOL(ocelot_port_txtstamp_request); static void ocelot_get_hwtimestamp(struct ocelot *ocelot, struct timespec64 *ts) { unsigned long flags; u32 val; spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); /* Read current PTP time to get seconds */ val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE); ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); ts->tv_sec = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN); /* Read packet HW timestamp from FIFO */ val = ocelot_read(ocelot, SYS_PTP_TXSTAMP); ts->tv_nsec = SYS_PTP_TXSTAMP_PTP_TXSTAMP(val); /* Sec has incremented since the ts was registered */ if ((ts->tv_sec & 0x1) != !!(val & SYS_PTP_TXSTAMP_PTP_TXSTAMP_SEC)) ts->tv_sec--; spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); } static bool ocelot_validate_ptp_skb(struct sk_buff *clone, u16 seqid) { struct ptp_header *hdr; hdr = ptp_parse_header(clone, OCELOT_SKB_CB(clone)->ptp_class); if (WARN_ON(!hdr)) return false; return seqid == ntohs(hdr->sequence_id); } void ocelot_get_txtstamp(struct ocelot *ocelot) { int budget = OCELOT_PTP_QUEUE_SZ; while (budget--) { struct sk_buff *skb, *skb_tmp, *skb_match = NULL; struct skb_shared_hwtstamps shhwtstamps; u32 val, id, seqid, txport; struct ocelot_port *port; struct timespec64 ts; unsigned long flags; val = ocelot_read(ocelot, SYS_PTP_STATUS); /* Check if a timestamp can be retrieved */ if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD)) break; WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL); /* Retrieve the ts ID and Tx port */ id = SYS_PTP_STATUS_PTP_MESS_ID_X(val); txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val); seqid = SYS_PTP_STATUS_PTP_MESS_SEQ_ID(val); port = ocelot->ports[txport]; spin_lock(&ocelot->ts_id_lock); port->ptp_skbs_in_flight--; ocelot->ptp_skbs_in_flight--; spin_unlock(&ocelot->ts_id_lock); /* Retrieve its associated skb */ try_again: spin_lock_irqsave(&port->tx_skbs.lock, flags); skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) { if (OCELOT_SKB_CB(skb)->ts_id != id) continue; __skb_unlink(skb, &port->tx_skbs); skb_match = skb; break; } spin_unlock_irqrestore(&port->tx_skbs.lock, flags); if (WARN_ON(!skb_match)) continue; if (!ocelot_validate_ptp_skb(skb_match, seqid)) { dev_err_ratelimited(ocelot->dev, "port %d received stale TX timestamp for seqid %d, discarding\n", txport, seqid); dev_kfree_skb_any(skb); goto try_again; } /* Get the h/w timestamp */ ocelot_get_hwtimestamp(ocelot, &ts); /* Set the timestamp into the skb */ memset(&shhwtstamps, 0, sizeof(shhwtstamps)); shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec); skb_complete_tx_timestamp(skb_match, &shhwtstamps); /* Next ts */ ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT); } } EXPORT_SYMBOL(ocelot_get_txtstamp); static int ocelot_rx_frame_word(struct ocelot *ocelot, u8 grp, bool ifh, u32 *rval) { u32 bytes_valid, val; val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); if (val == XTR_NOT_READY) { if (ifh) return -EIO; do { val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); } while (val == XTR_NOT_READY); } switch (val) { case XTR_ABORT: return -EIO; case XTR_EOF_0: case XTR_EOF_1: case XTR_EOF_2: case XTR_EOF_3: case XTR_PRUNED: bytes_valid = XTR_VALID_BYTES(val); val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); if (val == XTR_ESCAPE) *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp); else *rval = val; return bytes_valid; case XTR_ESCAPE: *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp); return 4; default: *rval = val; return 4; } } static int ocelot_xtr_poll_xfh(struct ocelot *ocelot, int grp, u32 *xfh) { int i, err = 0; for (i = 0; i < OCELOT_TAG_LEN / 4; i++) { err = ocelot_rx_frame_word(ocelot, grp, true, &xfh[i]); if (err != 4) return (err < 0) ? err : -EIO; } return 0; } int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb) { struct skb_shared_hwtstamps *shhwtstamps; u64 tod_in_ns, full_ts_in_ns; u64 timestamp, src_port, len; u32 xfh[OCELOT_TAG_LEN / 4]; struct net_device *dev; struct timespec64 ts; struct sk_buff *skb; int sz, buf_len; u32 val, *buf; int err; err = ocelot_xtr_poll_xfh(ocelot, grp, xfh); if (err) return err; ocelot_xfh_get_src_port(xfh, &src_port); ocelot_xfh_get_len(xfh, &len); ocelot_xfh_get_rew_val(xfh, ×tamp); if (WARN_ON(src_port >= ocelot->num_phys_ports)) return -EINVAL; dev = ocelot->ops->port_to_netdev(ocelot, src_port); if (!dev) return -EINVAL; skb = netdev_alloc_skb(dev, len); if (unlikely(!skb)) { netdev_err(dev, "Unable to allocate sk_buff\n"); return -ENOMEM; } buf_len = len - ETH_FCS_LEN; buf = (u32 *)skb_put(skb, buf_len); len = 0; do { sz = ocelot_rx_frame_word(ocelot, grp, false, &val); if (sz < 0) { err = sz; goto out_free_skb; } *buf++ = val; len += sz; } while (len < buf_len); /* Read the FCS */ sz = ocelot_rx_frame_word(ocelot, grp, false, &val); if (sz < 0) { err = sz; goto out_free_skb; } /* Update the statistics if part of the FCS was read before */ len -= ETH_FCS_LEN - sz; if (unlikely(dev->features & NETIF_F_RXFCS)) { buf = (u32 *)skb_put(skb, ETH_FCS_LEN); *buf = val; } if (ocelot->ptp) { ocelot_ptp_gettime64(&ocelot->ptp_info, &ts); tod_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec); if ((tod_in_ns & 0xffffffff) < timestamp) full_ts_in_ns = (((tod_in_ns >> 32) - 1) << 32) | timestamp; else full_ts_in_ns = (tod_in_ns & GENMASK_ULL(63, 32)) | timestamp; shhwtstamps = skb_hwtstamps(skb); memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); shhwtstamps->hwtstamp = full_ts_in_ns; } /* Everything we see on an interface that is in the HW bridge * has already been forwarded. */ if (ocelot->ports[src_port]->bridge) skb->offload_fwd_mark = 1; skb->protocol = eth_type_trans(skb, dev); *nskb = skb; return 0; out_free_skb: kfree_skb(skb); return err; } EXPORT_SYMBOL(ocelot_xtr_poll_frame); bool ocelot_can_inject(struct ocelot *ocelot, int grp) { u32 val = ocelot_read(ocelot, QS_INJ_STATUS); if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp)))) return false; if (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))) return false; return true; } EXPORT_SYMBOL(ocelot_can_inject); void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp, u32 rew_op, struct sk_buff *skb) { u32 ifh[OCELOT_TAG_LEN / 4] = {0}; unsigned int i, count, last; ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); ocelot_ifh_set_bypass(ifh, 1); ocelot_ifh_set_dest(ifh, BIT_ULL(port)); ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C); ocelot_ifh_set_vlan_tci(ifh, skb_vlan_tag_get(skb)); ocelot_ifh_set_rew_op(ifh, rew_op); for (i = 0; i < OCELOT_TAG_LEN / 4; i++) ocelot_write_rix(ocelot, ifh[i], QS_INJ_WR, grp); count = DIV_ROUND_UP(skb->len, 4); last = skb->len % 4; for (i = 0; i < count; i++) ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp); /* Add padding */ while (i < (OCELOT_BUFFER_CELL_SZ / 4)) { ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); i++; } /* Indicate EOF and valid bytes in last word */ ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) | QS_INJ_CTRL_EOF, QS_INJ_CTRL, grp); /* Add dummy CRC */ ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); skb_tx_timestamp(skb); skb->dev->stats.tx_packets++; skb->dev->stats.tx_bytes += skb->len; } EXPORT_SYMBOL(ocelot_port_inject_frame); void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp) { while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) ocelot_read_rix(ocelot, QS_XTR_RD, grp); } EXPORT_SYMBOL(ocelot_drain_cpu_queue); int ocelot_fdb_add(struct ocelot *ocelot, int port, const unsigned char *addr, u16 vid) { int pgid = port; if (port == ocelot->npi) pgid = PGID_CPU; return ocelot_mact_learn(ocelot, pgid, addr, vid, ENTRYTYPE_LOCKED); } EXPORT_SYMBOL(ocelot_fdb_add); int ocelot_fdb_del(struct ocelot *ocelot, int port, const unsigned char *addr, u16 vid) { return ocelot_mact_forget(ocelot, addr, vid); } EXPORT_SYMBOL(ocelot_fdb_del); int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid, bool is_static, void *data) { struct ocelot_dump_ctx *dump = data; u32 portid = NETLINK_CB(dump->cb->skb).portid; u32 seq = dump->cb->nlh->nlmsg_seq; struct nlmsghdr *nlh; struct ndmsg *ndm; if (dump->idx < dump->cb->args[2]) goto skip; nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, sizeof(*ndm), NLM_F_MULTI); if (!nlh) return -EMSGSIZE; ndm = nlmsg_data(nlh); ndm->ndm_family = AF_BRIDGE; ndm->ndm_pad1 = 0; ndm->ndm_pad2 = 0; ndm->ndm_flags = NTF_SELF; ndm->ndm_type = 0; ndm->ndm_ifindex = dump->dev->ifindex; ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) goto nla_put_failure; if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) goto nla_put_failure; nlmsg_end(dump->skb, nlh); skip: dump->idx++; return 0; nla_put_failure: nlmsg_cancel(dump->skb, nlh); return -EMSGSIZE; } EXPORT_SYMBOL(ocelot_port_fdb_do_dump); /* Caller must hold &ocelot->mact_lock */ static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col, struct ocelot_mact_entry *entry) { u32 val, dst, macl, mach; char mac[ETH_ALEN]; /* Set row and column to read from */ ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row); ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col); /* Issue a read command */ ocelot_write(ocelot, ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ), ANA_TABLES_MACACCESS); if (ocelot_mact_wait_for_completion(ocelot)) return -ETIMEDOUT; /* Read the entry flags */ val = ocelot_read(ocelot, ANA_TABLES_MACACCESS); if (!(val & ANA_TABLES_MACACCESS_VALID)) return -EINVAL; /* If the entry read has another port configured as its destination, * do not report it. */ dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3; if (dst != port) return -EINVAL; /* Get the entry's MAC address and VLAN id */ macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA); mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA); mac[0] = (mach >> 8) & 0xff; mac[1] = (mach >> 0) & 0xff; mac[2] = (macl >> 24) & 0xff; mac[3] = (macl >> 16) & 0xff; mac[4] = (macl >> 8) & 0xff; mac[5] = (macl >> 0) & 0xff; entry->vid = (mach >> 16) & 0xfff; ether_addr_copy(entry->mac, mac); return 0; } int ocelot_fdb_dump(struct ocelot *ocelot, int port, dsa_fdb_dump_cb_t *cb, void *data) { int err = 0; int i, j; /* We could take the lock just around ocelot_mact_read, but doing so * thousands of times in a row seems rather pointless and inefficient. */ mutex_lock(&ocelot->mact_lock); /* Loop through all the mac tables entries. */ for (i = 0; i < ocelot->num_mact_rows; i++) { for (j = 0; j < 4; j++) { struct ocelot_mact_entry entry; bool is_static; err = ocelot_mact_read(ocelot, port, i, j, &entry); /* If the entry is invalid (wrong port, invalid...), * skip it. */ if (err == -EINVAL) continue; else if (err) break; is_static = (entry.type == ENTRYTYPE_LOCKED); err = cb(entry.mac, entry.vid, is_static, data); if (err) break; } } mutex_unlock(&ocelot->mact_lock); return err; } EXPORT_SYMBOL(ocelot_fdb_dump); static void ocelot_populate_l2_ptp_trap_key(struct ocelot_vcap_filter *trap) { trap->key_type = OCELOT_VCAP_KEY_ETYPE; *(__be16 *)trap->key.etype.etype.value = htons(ETH_P_1588); *(__be16 *)trap->key.etype.etype.mask = htons(0xffff); } static void ocelot_populate_ipv4_ptp_event_trap_key(struct ocelot_vcap_filter *trap) { trap->key_type = OCELOT_VCAP_KEY_IPV4; trap->key.ipv4.dport.value = PTP_EV_PORT; trap->key.ipv4.dport.mask = 0xffff; } static void ocelot_populate_ipv6_ptp_event_trap_key(struct ocelot_vcap_filter *trap) { trap->key_type = OCELOT_VCAP_KEY_IPV6; trap->key.ipv6.dport.value = PTP_EV_PORT; trap->key.ipv6.dport.mask = 0xffff; } static void ocelot_populate_ipv4_ptp_general_trap_key(struct ocelot_vcap_filter *trap) { trap->key_type = OCELOT_VCAP_KEY_IPV4; trap->key.ipv4.dport.value = PTP_GEN_PORT; trap->key.ipv4.dport.mask = 0xffff; } static void ocelot_populate_ipv6_ptp_general_trap_key(struct ocelot_vcap_filter *trap) { trap->key_type = OCELOT_VCAP_KEY_IPV6; trap->key.ipv6.dport.value = PTP_GEN_PORT; trap->key.ipv6.dport.mask = 0xffff; } static int ocelot_trap_add(struct ocelot *ocelot, int port, unsigned long cookie, void (*populate)(struct ocelot_vcap_filter *f)) { struct ocelot_vcap_block *block_vcap_is2; struct ocelot_vcap_filter *trap; bool new = false; int err; block_vcap_is2 = &ocelot->block[VCAP_IS2]; trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie, false); if (!trap) { trap = kzalloc(sizeof(*trap), GFP_KERNEL); if (!trap) return -ENOMEM; populate(trap); trap->prio = 1; trap->id.cookie = cookie; trap->id.tc_offload = false; trap->block_id = VCAP_IS2; trap->type = OCELOT_VCAP_FILTER_OFFLOAD; trap->lookup = 0; trap->action.cpu_copy_ena = true; trap->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY; trap->action.port_mask = 0; new = true; } trap->ingress_port_mask |= BIT(port); if (new) err = ocelot_vcap_filter_add(ocelot, trap, NULL); else err = ocelot_vcap_filter_replace(ocelot, trap); if (err) { trap->ingress_port_mask &= ~BIT(port); if (!trap->ingress_port_mask) kfree(trap); return err; } return 0; } static int ocelot_trap_del(struct ocelot *ocelot, int port, unsigned long cookie) { struct ocelot_vcap_block *block_vcap_is2; struct ocelot_vcap_filter *trap; block_vcap_is2 = &ocelot->block[VCAP_IS2]; trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie, false); if (!trap) return 0; trap->ingress_port_mask &= ~BIT(port); if (!trap->ingress_port_mask) return ocelot_vcap_filter_del(ocelot, trap); return ocelot_vcap_filter_replace(ocelot, trap); } static int ocelot_l2_ptp_trap_add(struct ocelot *ocelot, int port) { unsigned long l2_cookie = ocelot->num_phys_ports + 1; return ocelot_trap_add(ocelot, port, l2_cookie, ocelot_populate_l2_ptp_trap_key); } static int ocelot_l2_ptp_trap_del(struct ocelot *ocelot, int port) { unsigned long l2_cookie = ocelot->num_phys_ports + 1; return ocelot_trap_del(ocelot, port, l2_cookie); } static int ocelot_ipv4_ptp_trap_add(struct ocelot *ocelot, int port) { unsigned long ipv4_gen_cookie = ocelot->num_phys_ports + 2; unsigned long ipv4_ev_cookie = ocelot->num_phys_ports + 3; int err; err = ocelot_trap_add(ocelot, port, ipv4_ev_cookie, ocelot_populate_ipv4_ptp_event_trap_key); if (err) return err; err = ocelot_trap_add(ocelot, port, ipv4_gen_cookie, ocelot_populate_ipv4_ptp_general_trap_key); if (err) ocelot_trap_del(ocelot, port, ipv4_ev_cookie); return err; } static int ocelot_ipv4_ptp_trap_del(struct ocelot *ocelot, int port) { unsigned long ipv4_gen_cookie = ocelot->num_phys_ports + 2; unsigned long ipv4_ev_cookie = ocelot->num_phys_ports + 3; int err; err = ocelot_trap_del(ocelot, port, ipv4_ev_cookie); err |= ocelot_trap_del(ocelot, port, ipv4_gen_cookie); return err; } static int ocelot_ipv6_ptp_trap_add(struct ocelot *ocelot, int port) { unsigned long ipv6_gen_cookie = ocelot->num_phys_ports + 4; unsigned long ipv6_ev_cookie = ocelot->num_phys_ports + 5; int err; err = ocelot_trap_add(ocelot, port, ipv6_ev_cookie, ocelot_populate_ipv6_ptp_event_trap_key); if (err) return err; err = ocelot_trap_add(ocelot, port, ipv6_gen_cookie, ocelot_populate_ipv6_ptp_general_trap_key); if (err) ocelot_trap_del(ocelot, port, ipv6_ev_cookie); return err; } static int ocelot_ipv6_ptp_trap_del(struct ocelot *ocelot, int port) { unsigned long ipv6_gen_cookie = ocelot->num_phys_ports + 4; unsigned long ipv6_ev_cookie = ocelot->num_phys_ports + 5; int err; err = ocelot_trap_del(ocelot, port, ipv6_ev_cookie); err |= ocelot_trap_del(ocelot, port, ipv6_gen_cookie); return err; } static int ocelot_setup_ptp_traps(struct ocelot *ocelot, int port, bool l2, bool l4) { int err; if (l2) err = ocelot_l2_ptp_trap_add(ocelot, port); else err = ocelot_l2_ptp_trap_del(ocelot, port); if (err) return err; if (l4) { err = ocelot_ipv4_ptp_trap_add(ocelot, port); if (err) goto err_ipv4; err = ocelot_ipv6_ptp_trap_add(ocelot, port); if (err) goto err_ipv6; } else { err = ocelot_ipv4_ptp_trap_del(ocelot, port); err |= ocelot_ipv6_ptp_trap_del(ocelot, port); } if (err) return err; return 0; err_ipv6: ocelot_ipv4_ptp_trap_del(ocelot, port); err_ipv4: if (l2) ocelot_l2_ptp_trap_del(ocelot, port); return err; } int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr) { return copy_to_user(ifr->ifr_data, &ocelot->hwtstamp_config, sizeof(ocelot->hwtstamp_config)) ? -EFAULT : 0; } EXPORT_SYMBOL(ocelot_hwstamp_get); int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr) { struct ocelot_port *ocelot_port = ocelot->ports[port]; bool l2 = false, l4 = false; struct hwtstamp_config cfg; int err; if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) return -EFAULT; /* reserved for future extensions */ if (cfg.flags) return -EINVAL; /* Tx type sanity check */ switch (cfg.tx_type) { case HWTSTAMP_TX_ON: ocelot_port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; break; case HWTSTAMP_TX_ONESTEP_SYNC: /* IFH_REW_OP_ONE_STEP_PTP updates the correctional field, we * need to update the origin time. */ ocelot_port->ptp_cmd = IFH_REW_OP_ORIGIN_PTP; break; case HWTSTAMP_TX_OFF: ocelot_port->ptp_cmd = 0; break; default: return -ERANGE; } mutex_lock(&ocelot->ptp_lock); switch (cfg.rx_filter) { case HWTSTAMP_FILTER_NONE: break; case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: l4 = true; break; case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: l2 = true; break; case HWTSTAMP_FILTER_PTP_V2_EVENT: case HWTSTAMP_FILTER_PTP_V2_SYNC: case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: l2 = true; l4 = true; break; default: mutex_unlock(&ocelot->ptp_lock); return -ERANGE; } err = ocelot_setup_ptp_traps(ocelot, port, l2, l4); if (err) { mutex_unlock(&ocelot->ptp_lock); return err; } if (l2 && l4) cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; else if (l2) cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; else if (l4) cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; else cfg.rx_filter = HWTSTAMP_FILTER_NONE; /* Commit back the result & save it */ memcpy(&ocelot->hwtstamp_config, &cfg, sizeof(cfg)); mutex_unlock(&ocelot->ptp_lock); return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; } EXPORT_SYMBOL(ocelot_hwstamp_set); void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data) { int i; if (sset != ETH_SS_STATS) return; for (i = 0; i < ocelot->num_stats; i++) memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name, ETH_GSTRING_LEN); } EXPORT_SYMBOL(ocelot_get_strings); static void ocelot_update_stats(struct ocelot *ocelot) { int i, j; mutex_lock(&ocelot->stats_lock); for (i = 0; i < ocelot->num_phys_ports; i++) { /* Configure the port to read the stats from */ ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG); for (j = 0; j < ocelot->num_stats; j++) { u32 val; unsigned int idx = i * ocelot->num_stats + j; val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS, ocelot->stats_layout[j].offset); if (val < (ocelot->stats[idx] & U32_MAX)) ocelot->stats[idx] += (u64)1 << 32; ocelot->stats[idx] = (ocelot->stats[idx] & ~(u64)U32_MAX) + val; } } mutex_unlock(&ocelot->stats_lock); } static void ocelot_check_stats_work(struct work_struct *work) { struct delayed_work *del_work = to_delayed_work(work); struct ocelot *ocelot = container_of(del_work, struct ocelot, stats_work); ocelot_update_stats(ocelot); queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, OCELOT_STATS_CHECK_DELAY); } void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data) { int i; /* check and update now */ ocelot_update_stats(ocelot); /* Copy all counters */ for (i = 0; i < ocelot->num_stats; i++) *data++ = ocelot->stats[port * ocelot->num_stats + i]; } EXPORT_SYMBOL(ocelot_get_ethtool_stats); int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset) { if (sset != ETH_SS_STATS) return -EOPNOTSUPP; return ocelot->num_stats; } EXPORT_SYMBOL(ocelot_get_sset_count); int ocelot_get_ts_info(struct ocelot *ocelot, int port, struct ethtool_ts_info *info) { info->phc_index = ocelot->ptp_clock ? ptp_clock_index(ocelot->ptp_clock) : -1; if (info->phc_index == -1) { info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_RX_SOFTWARE | SOF_TIMESTAMPING_SOFTWARE; return 0; } info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_RX_SOFTWARE | SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_RX_HARDWARE | SOF_TIMESTAMPING_RAW_HARDWARE; info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) | BIT(HWTSTAMP_TX_ONESTEP_SYNC); info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) | BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT); return 0; } EXPORT_SYMBOL(ocelot_get_ts_info); static u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond, bool only_active_ports) { u32 mask = 0; int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port) continue; if (ocelot_port->bond == bond) { if (only_active_ports && !ocelot_port->lag_tx_active) continue; mask |= BIT(port); } } return mask; } static u32 ocelot_get_bridge_fwd_mask(struct ocelot *ocelot, int src_port, struct net_device *bridge) { struct ocelot_port *ocelot_port = ocelot->ports[src_port]; u32 mask = 0; int port; if (!ocelot_port || ocelot_port->bridge != bridge || ocelot_port->stp_state != BR_STATE_FORWARDING) return 0; for (port = 0; port < ocelot->num_phys_ports; port++) { ocelot_port = ocelot->ports[port]; if (!ocelot_port) continue; if (ocelot_port->stp_state == BR_STATE_FORWARDING && ocelot_port->bridge == bridge) mask |= BIT(port); } return mask; } static u32 ocelot_get_dsa_8021q_cpu_mask(struct ocelot *ocelot) { u32 mask = 0; int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port) continue; if (ocelot_port->is_dsa_8021q_cpu) mask |= BIT(port); } return mask; } void ocelot_apply_bridge_fwd_mask(struct ocelot *ocelot) { unsigned long cpu_fwd_mask; int port; /* If a DSA tag_8021q CPU exists, it needs to be included in the * regular forwarding path of the front ports regardless of whether * those are bridged or standalone. * If DSA tag_8021q is not used, this returns 0, which is fine because * the hardware-based CPU port module can be a destination for packets * even if it isn't part of PGID_SRC. */ cpu_fwd_mask = ocelot_get_dsa_8021q_cpu_mask(ocelot); /* Apply FWD mask. The loop is needed to add/remove the current port as * a source for the other ports. */ for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; unsigned long mask; if (!ocelot_port) { /* Unused ports can't send anywhere */ mask = 0; } else if (ocelot_port->is_dsa_8021q_cpu) { /* The DSA tag_8021q CPU ports need to be able to * forward packets to all other ports except for * themselves */ mask = GENMASK(ocelot->num_phys_ports - 1, 0); mask &= ~cpu_fwd_mask; } else if (ocelot_port->bridge) { struct net_device *bridge = ocelot_port->bridge; struct net_device *bond = ocelot_port->bond; mask = ocelot_get_bridge_fwd_mask(ocelot, port, bridge); mask |= cpu_fwd_mask; mask &= ~BIT(port); if (bond) { mask &= ~ocelot_get_bond_mask(ocelot, bond, false); } } else { /* Standalone ports forward only to DSA tag_8021q CPU * ports (if those exist), or to the hardware CPU port * module otherwise. */ mask = cpu_fwd_mask; } ocelot_write_rix(ocelot, mask, ANA_PGID_PGID, PGID_SRC + port); } } EXPORT_SYMBOL(ocelot_apply_bridge_fwd_mask); void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state) { struct ocelot_port *ocelot_port = ocelot->ports[port]; u32 learn_ena = 0; ocelot_port->stp_state = state; if ((state == BR_STATE_LEARNING || state == BR_STATE_FORWARDING) && ocelot_port->learn_ena) learn_ena = ANA_PORT_PORT_CFG_LEARN_ENA; ocelot_rmw_gix(ocelot, learn_ena, ANA_PORT_PORT_CFG_LEARN_ENA, ANA_PORT_PORT_CFG, port); ocelot_apply_bridge_fwd_mask(ocelot); } EXPORT_SYMBOL(ocelot_bridge_stp_state_set); void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs) { unsigned int age_period = ANA_AUTOAGE_AGE_PERIOD(msecs / 2000); /* Setting AGE_PERIOD to zero effectively disables automatic aging, * which is clearly not what our intention is. So avoid that. */ if (!age_period) age_period = 1; ocelot_rmw(ocelot, age_period, ANA_AUTOAGE_AGE_PERIOD_M, ANA_AUTOAGE); } EXPORT_SYMBOL(ocelot_set_ageing_time); static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot, const unsigned char *addr, u16 vid) { struct ocelot_multicast *mc; list_for_each_entry(mc, &ocelot->multicast, list) { if (ether_addr_equal(mc->addr, addr) && mc->vid == vid) return mc; } return NULL; } static enum macaccess_entry_type ocelot_classify_mdb(const unsigned char *addr) { if (addr[0] == 0x01 && addr[1] == 0x00 && addr[2] == 0x5e) return ENTRYTYPE_MACv4; if (addr[0] == 0x33 && addr[1] == 0x33) return ENTRYTYPE_MACv6; return ENTRYTYPE_LOCKED; } static struct ocelot_pgid *ocelot_pgid_alloc(struct ocelot *ocelot, int index, unsigned long ports) { struct ocelot_pgid *pgid; pgid = kzalloc(sizeof(*pgid), GFP_KERNEL); if (!pgid) return ERR_PTR(-ENOMEM); pgid->ports = ports; pgid->index = index; refcount_set(&pgid->refcount, 1); list_add_tail(&pgid->list, &ocelot->pgids); return pgid; } static void ocelot_pgid_free(struct ocelot *ocelot, struct ocelot_pgid *pgid) { if (!refcount_dec_and_test(&pgid->refcount)) return; list_del(&pgid->list); kfree(pgid); } static struct ocelot_pgid *ocelot_mdb_get_pgid(struct ocelot *ocelot, const struct ocelot_multicast *mc) { struct ocelot_pgid *pgid; int index; /* According to VSC7514 datasheet 3.9.1.5 IPv4 Multicast Entries and * 3.9.1.6 IPv6 Multicast Entries, "Instead of a lookup in the * destination mask table (PGID), the destination set is programmed as * part of the entry MAC address.", and the DEST_IDX is set to 0. */ if (mc->entry_type == ENTRYTYPE_MACv4 || mc->entry_type == ENTRYTYPE_MACv6) return ocelot_pgid_alloc(ocelot, 0, mc->ports); list_for_each_entry(pgid, &ocelot->pgids, list) { /* When searching for a nonreserved multicast PGID, ignore the * dummy PGID of zero that we have for MACv4/MACv6 entries */ if (pgid->index && pgid->ports == mc->ports) { refcount_inc(&pgid->refcount); return pgid; } } /* Search for a free index in the nonreserved multicast PGID area */ for_each_nonreserved_multicast_dest_pgid(ocelot, index) { bool used = false; list_for_each_entry(pgid, &ocelot->pgids, list) { if (pgid->index == index) { used = true; break; } } if (!used) return ocelot_pgid_alloc(ocelot, index, mc->ports); } return ERR_PTR(-ENOSPC); } static void ocelot_encode_ports_to_mdb(unsigned char *addr, struct ocelot_multicast *mc) { ether_addr_copy(addr, mc->addr); if (mc->entry_type == ENTRYTYPE_MACv4) { addr[0] = 0; addr[1] = mc->ports >> 8; addr[2] = mc->ports & 0xff; } else if (mc->entry_type == ENTRYTYPE_MACv6) { addr[0] = mc->ports >> 8; addr[1] = mc->ports & 0xff; } } int ocelot_port_mdb_add(struct ocelot *ocelot, int port, const struct switchdev_obj_port_mdb *mdb) { unsigned char addr[ETH_ALEN]; struct ocelot_multicast *mc; struct ocelot_pgid *pgid; u16 vid = mdb->vid; if (port == ocelot->npi) port = ocelot->num_phys_ports; mc = ocelot_multicast_get(ocelot, mdb->addr, vid); if (!mc) { /* New entry */ mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL); if (!mc) return -ENOMEM; mc->entry_type = ocelot_classify_mdb(mdb->addr); ether_addr_copy(mc->addr, mdb->addr); mc->vid = vid; list_add_tail(&mc->list, &ocelot->multicast); } else { /* Existing entry. Clean up the current port mask from * hardware now, because we'll be modifying it. */ ocelot_pgid_free(ocelot, mc->pgid); ocelot_encode_ports_to_mdb(addr, mc); ocelot_mact_forget(ocelot, addr, vid); } mc->ports |= BIT(port); pgid = ocelot_mdb_get_pgid(ocelot, mc); if (IS_ERR(pgid)) { dev_err(ocelot->dev, "Cannot allocate PGID for mdb %pM vid %d\n", mc->addr, mc->vid); devm_kfree(ocelot->dev, mc); return PTR_ERR(pgid); } mc->pgid = pgid; ocelot_encode_ports_to_mdb(addr, mc); if (mc->entry_type != ENTRYTYPE_MACv4 && mc->entry_type != ENTRYTYPE_MACv6) ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID, pgid->index); return ocelot_mact_learn(ocelot, pgid->index, addr, vid, mc->entry_type); } EXPORT_SYMBOL(ocelot_port_mdb_add); int ocelot_port_mdb_del(struct ocelot *ocelot, int port, const struct switchdev_obj_port_mdb *mdb) { unsigned char addr[ETH_ALEN]; struct ocelot_multicast *mc; struct ocelot_pgid *pgid; u16 vid = mdb->vid; if (port == ocelot->npi) port = ocelot->num_phys_ports; mc = ocelot_multicast_get(ocelot, mdb->addr, vid); if (!mc) return -ENOENT; ocelot_encode_ports_to_mdb(addr, mc); ocelot_mact_forget(ocelot, addr, vid); ocelot_pgid_free(ocelot, mc->pgid); mc->ports &= ~BIT(port); if (!mc->ports) { list_del(&mc->list); devm_kfree(ocelot->dev, mc); return 0; } /* We have a PGID with fewer ports now */ pgid = ocelot_mdb_get_pgid(ocelot, mc); if (IS_ERR(pgid)) return PTR_ERR(pgid); mc->pgid = pgid; ocelot_encode_ports_to_mdb(addr, mc); if (mc->entry_type != ENTRYTYPE_MACv4 && mc->entry_type != ENTRYTYPE_MACv6) ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID, pgid->index); return ocelot_mact_learn(ocelot, pgid->index, addr, vid, mc->entry_type); } EXPORT_SYMBOL(ocelot_port_mdb_del); void ocelot_port_bridge_join(struct ocelot *ocelot, int port, struct net_device *bridge) { struct ocelot_port *ocelot_port = ocelot->ports[port]; ocelot_port->bridge = bridge; ocelot_apply_bridge_fwd_mask(ocelot); } EXPORT_SYMBOL(ocelot_port_bridge_join); void ocelot_port_bridge_leave(struct ocelot *ocelot, int port, struct net_device *bridge) { struct ocelot_port *ocelot_port = ocelot->ports[port]; ocelot_port->bridge = NULL; ocelot_port_set_pvid(ocelot, port, NULL); ocelot_port_manage_port_tag(ocelot, port); ocelot_apply_bridge_fwd_mask(ocelot); } EXPORT_SYMBOL(ocelot_port_bridge_leave); static void ocelot_set_aggr_pgids(struct ocelot *ocelot) { unsigned long visited = GENMASK(ocelot->num_phys_ports - 1, 0); int i, port, lag; /* Reset destination and aggregation PGIDS */ for_each_unicast_dest_pgid(ocelot, port) ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); for_each_aggr_pgid(ocelot, i) ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0), ANA_PGID_PGID, i); /* The visited ports bitmask holds the list of ports offloading any * bonding interface. Initially we mark all these ports as unvisited, * then every time we visit a port in this bitmask, we know that it is * the lowest numbered port, i.e. the one whose logical ID == physical * port ID == LAG ID. So we mark as visited all further ports in the * bitmask that are offloading the same bonding interface. This way, * we set up the aggregation PGIDs only once per bonding interface. */ for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port || !ocelot_port->bond) continue; visited &= ~BIT(port); } /* Now, set PGIDs for each active LAG */ for (lag = 0; lag < ocelot->num_phys_ports; lag++) { struct net_device *bond = ocelot->ports[lag]->bond; int num_active_ports = 0; unsigned long bond_mask; u8 aggr_idx[16]; if (!bond || (visited & BIT(lag))) continue; bond_mask = ocelot_get_bond_mask(ocelot, bond, true); for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) { // Destination mask ocelot_write_rix(ocelot, bond_mask, ANA_PGID_PGID, port); aggr_idx[num_active_ports++] = port; } for_each_aggr_pgid(ocelot, i) { u32 ac; ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i); ac &= ~bond_mask; /* Don't do division by zero if there was no active * port. Just make all aggregation codes zero. */ if (num_active_ports) ac |= BIT(aggr_idx[i % num_active_ports]); ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i); } /* Mark all ports in the same LAG as visited to avoid applying * the same config again. */ for (port = lag; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port) continue; if (ocelot_port->bond == bond) visited |= BIT(port); } } } /* When offloading a bonding interface, the switch ports configured under the * same bond must have the same logical port ID, equal to the physical port ID * of the lowest numbered physical port in that bond. Otherwise, in standalone/ * bridged mode, each port has a logical port ID equal to its physical port ID. */ static void ocelot_setup_logical_port_ids(struct ocelot *ocelot) { int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; struct net_device *bond; if (!ocelot_port) continue; bond = ocelot_port->bond; if (bond) { int lag = __ffs(ocelot_get_bond_mask(ocelot, bond, false)); ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_PORTID_VAL(lag), ANA_PORT_PORT_CFG_PORTID_VAL_M, ANA_PORT_PORT_CFG, port); } else { ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_PORTID_VAL(port), ANA_PORT_PORT_CFG_PORTID_VAL_M, ANA_PORT_PORT_CFG, port); } } } int ocelot_port_lag_join(struct ocelot *ocelot, int port, struct net_device *bond, struct netdev_lag_upper_info *info) { if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) return -EOPNOTSUPP; ocelot->ports[port]->bond = bond; ocelot_setup_logical_port_ids(ocelot); ocelot_apply_bridge_fwd_mask(ocelot); ocelot_set_aggr_pgids(ocelot); return 0; } EXPORT_SYMBOL(ocelot_port_lag_join); void ocelot_port_lag_leave(struct ocelot *ocelot, int port, struct net_device *bond) { ocelot->ports[port]->bond = NULL; ocelot_setup_logical_port_ids(ocelot); ocelot_apply_bridge_fwd_mask(ocelot); ocelot_set_aggr_pgids(ocelot); } EXPORT_SYMBOL(ocelot_port_lag_leave); void ocelot_port_lag_change(struct ocelot *ocelot, int port, bool lag_tx_active) { struct ocelot_port *ocelot_port = ocelot->ports[port]; ocelot_port->lag_tx_active = lag_tx_active; /* Rebalance the LAGs */ ocelot_set_aggr_pgids(ocelot); } EXPORT_SYMBOL(ocelot_port_lag_change); /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu. * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG. * In the special case that it's the NPI port that we're configuring, the * length of the tag and optional prefix needs to be accounted for privately, * in order to be able to sustain communication at the requested @sdu. */ void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN; int pause_start, pause_stop; int atop, atop_tot; if (port == ocelot->npi) { maxlen += OCELOT_TAG_LEN; if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT) maxlen += OCELOT_SHORT_PREFIX_LEN; else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG) maxlen += OCELOT_LONG_PREFIX_LEN; } ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG); /* Set Pause watermark hysteresis */ pause_start = 6 * maxlen / OCELOT_BUFFER_CELL_SZ; pause_stop = 4 * maxlen / OCELOT_BUFFER_CELL_SZ; ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_START, pause_start); ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_STOP, pause_stop); /* Tail dropping watermarks */ atop_tot = (ocelot->packet_buffer_size - 9 * maxlen) / OCELOT_BUFFER_CELL_SZ; atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ; ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port); ocelot_write(ocelot, ocelot->ops->wm_enc(atop_tot), SYS_ATOP_TOT_CFG); } EXPORT_SYMBOL(ocelot_port_set_maxlen); int ocelot_get_max_mtu(struct ocelot *ocelot, int port) { int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN; if (port == ocelot->npi) { max_mtu -= OCELOT_TAG_LEN; if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT) max_mtu -= OCELOT_SHORT_PREFIX_LEN; else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG) max_mtu -= OCELOT_LONG_PREFIX_LEN; } return max_mtu; } EXPORT_SYMBOL(ocelot_get_max_mtu); static void ocelot_port_set_learning(struct ocelot *ocelot, int port, bool enabled) { struct ocelot_port *ocelot_port = ocelot->ports[port]; u32 val = 0; if (enabled) val = ANA_PORT_PORT_CFG_LEARN_ENA; ocelot_rmw_gix(ocelot, val, ANA_PORT_PORT_CFG_LEARN_ENA, ANA_PORT_PORT_CFG, port); ocelot_port->learn_ena = enabled; } static void ocelot_port_set_ucast_flood(struct ocelot *ocelot, int port, bool enabled) { u32 val = 0; if (enabled) val = BIT(port); ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_UC); } static void ocelot_port_set_mcast_flood(struct ocelot *ocelot, int port, bool enabled) { u32 val = 0; if (enabled) val = BIT(port); ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MC); } static void ocelot_port_set_bcast_flood(struct ocelot *ocelot, int port, bool enabled) { u32 val = 0; if (enabled) val = BIT(port); ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_BC); } int ocelot_port_pre_bridge_flags(struct ocelot *ocelot, int port, struct switchdev_brport_flags flags) { if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD)) return -EINVAL; return 0; } EXPORT_SYMBOL(ocelot_port_pre_bridge_flags); void ocelot_port_bridge_flags(struct ocelot *ocelot, int port, struct switchdev_brport_flags flags) { if (flags.mask & BR_LEARNING) ocelot_port_set_learning(ocelot, port, !!(flags.val & BR_LEARNING)); if (flags.mask & BR_FLOOD) ocelot_port_set_ucast_flood(ocelot, port, !!(flags.val & BR_FLOOD)); if (flags.mask & BR_MCAST_FLOOD) ocelot_port_set_mcast_flood(ocelot, port, !!(flags.val & BR_MCAST_FLOOD)); if (flags.mask & BR_BCAST_FLOOD) ocelot_port_set_bcast_flood(ocelot, port, !!(flags.val & BR_BCAST_FLOOD)); } EXPORT_SYMBOL(ocelot_port_bridge_flags); void ocelot_init_port(struct ocelot *ocelot, int port) { struct ocelot_port *ocelot_port = ocelot->ports[port]; skb_queue_head_init(&ocelot_port->tx_skbs); /* Basic L2 initialization */ /* Set MAC IFG Gaps * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5 */ ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5), DEV_MAC_IFG_CFG); /* Load seed (0) and set MAC HDX late collision */ ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) | DEV_MAC_HDX_CFG_SEED_LOAD, DEV_MAC_HDX_CFG); mdelay(1); ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67), DEV_MAC_HDX_CFG); /* Set Max Length and maximum tags allowed */ ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN); ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) | DEV_MAC_TAGS_CFG_VLAN_AWR_ENA | DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA | DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA, DEV_MAC_TAGS_CFG); /* Set SMAC of Pause frame (00:00:00:00:00:00) */ ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG); ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG); /* Enable transmission of pause frames */ ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1); /* Drop frames with multicast source address */ ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, ANA_PORT_DROP_CFG, port); /* Set default VLAN and tag type to 8021Q. */ ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q), REW_PORT_VLAN_CFG_PORT_TPID_M, REW_PORT_VLAN_CFG, port); /* Disable source address learning for standalone mode */ ocelot_port_set_learning(ocelot, port, false); /* Set the port's initial logical port ID value, enable receiving * frames on it, and configure the MAC address learning type to * automatic. */ 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); /* Enable vcap lookups */ ocelot_vcap_enable(ocelot, port); } EXPORT_SYMBOL(ocelot_init_port); /* Configure and enable the CPU port module, which is a set of queues * accessible through register MMIO, frame DMA or Ethernet (in case * NPI mode is used). */ static void ocelot_cpu_port_init(struct ocelot *ocelot) { int cpu = ocelot->num_phys_ports; /* The unicast destination PGID for the CPU port module is unused */ ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu); /* Instead set up a multicast destination PGID for traffic copied to * the CPU. Whitelisted MAC addresses like the port netdevice MAC * addresses will be copied to the CPU via this PGID. */ ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU); ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA | ANA_PORT_PORT_CFG_PORTID_VAL(cpu), ANA_PORT_PORT_CFG, cpu); /* Enable CPU port module */ ocelot_fields_write(ocelot, cpu, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1); /* CPU port Injection/Extraction configuration */ ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_XTR_HDR, OCELOT_TAG_PREFIX_NONE); ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_INJ_HDR, OCELOT_TAG_PREFIX_NONE); /* Configure the CPU port to be VLAN aware */ ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(OCELOT_VLAN_UNAWARE_PVID) | ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1), ANA_PORT_VLAN_CFG, cpu); } static void ocelot_detect_features(struct ocelot *ocelot) { int mmgt, eq_ctrl; /* For Ocelot, Felix, Seville, Serval etc, SYS:MMGT:MMGT:FREECNT holds * the number of 240-byte free memory words (aka 4-cell chunks) and not * 192 bytes as the documentation incorrectly says. */ mmgt = ocelot_read(ocelot, SYS_MMGT); ocelot->packet_buffer_size = 240 * SYS_MMGT_FREECNT(mmgt); eq_ctrl = ocelot_read(ocelot, QSYS_EQ_CTRL); ocelot->num_frame_refs = QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(eq_ctrl); } int ocelot_init(struct ocelot *ocelot) { char queue_name[32]; int i, ret; u32 port; if (ocelot->ops->reset) { ret = ocelot->ops->reset(ocelot); if (ret) { dev_err(ocelot->dev, "Switch reset failed\n"); return ret; } } ocelot->stats = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports * ocelot->num_stats, sizeof(u64), GFP_KERNEL); if (!ocelot->stats) return -ENOMEM; mutex_init(&ocelot->stats_lock); mutex_init(&ocelot->ptp_lock); mutex_init(&ocelot->mact_lock); spin_lock_init(&ocelot->ptp_clock_lock); spin_lock_init(&ocelot->ts_id_lock); snprintf(queue_name, sizeof(queue_name), "%s-stats", dev_name(ocelot->dev)); ocelot->stats_queue = create_singlethread_workqueue(queue_name); if (!ocelot->stats_queue) return -ENOMEM; ocelot->owq = alloc_ordered_workqueue("ocelot-owq", 0); if (!ocelot->owq) { destroy_workqueue(ocelot->stats_queue); return -ENOMEM; } INIT_LIST_HEAD(&ocelot->multicast); INIT_LIST_HEAD(&ocelot->pgids); INIT_LIST_HEAD(&ocelot->vlans); ocelot_detect_features(ocelot); ocelot_mact_init(ocelot); ocelot_vlan_init(ocelot); ocelot_vcap_init(ocelot); ocelot_cpu_port_init(ocelot); for (port = 0; port < ocelot->num_phys_ports; port++) { /* Clear all counters (5 groups) */ ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) | SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f), SYS_STAT_CFG); } /* Only use S-Tag */ ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG); /* Aggregation mode */ ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA | ANA_AGGR_CFG_AC_DMAC_ENA | ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA | ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA | ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA | ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA, ANA_AGGR_CFG); /* Set MAC age time to default value. The entry is aged after * 2*AGE_PERIOD */ ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ), ANA_AUTOAGE); /* Disable learning for frames discarded by VLAN ingress filtering */ regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1); /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */ ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA | SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING); /* Setup flooding PGIDs */ for (i = 0; i < ocelot->num_flooding_pgids; i++) ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) | ANA_FLOODING_FLD_BROADCAST(PGID_BC) | ANA_FLOODING_FLD_UNICAST(PGID_UC), ANA_FLOODING, i); ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) | ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) | ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) | ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC), ANA_FLOODING_IPMC); for (port = 0; port < ocelot->num_phys_ports; port++) { /* Transmit the frame to the local port. */ ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); /* 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); /* Ensure bridging is disabled */ ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port); } for_each_nonreserved_multicast_dest_pgid(ocelot, i) { u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0)); ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); } ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_BLACKHOLE); /* Allow broadcast and unknown L2 multicast to the CPU. */ ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), ANA_PGID_PGID, PGID_MC); ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), ANA_PGID_PGID, PGID_BC); ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4); ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6); /* Allow manual injection via DEVCPU_QS registers, and byte swap these * registers endianness. */ ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP | QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0); ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP | QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0); ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) | ANA_CPUQ_CFG_CPUQ_LRN(2) | ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) | ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) | ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) | ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) | ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) | ANA_CPUQ_CFG_CPUQ_IGMP(6) | ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG); for (i = 0; i < 16; i++) ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) | ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6), ANA_CPUQ_8021_CFG, i); INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work); queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, OCELOT_STATS_CHECK_DELAY); return 0; } EXPORT_SYMBOL(ocelot_init); void ocelot_deinit(struct ocelot *ocelot) { cancel_delayed_work(&ocelot->stats_work); destroy_workqueue(ocelot->stats_queue); destroy_workqueue(ocelot->owq); mutex_destroy(&ocelot->stats_lock); } EXPORT_SYMBOL(ocelot_deinit); void ocelot_deinit_port(struct ocelot *ocelot, int port) { struct ocelot_port *ocelot_port = ocelot->ports[port]; skb_queue_purge(&ocelot_port->tx_skbs); } EXPORT_SYMBOL(ocelot_deinit_port); MODULE_LICENSE("Dual MIT/GPL");