| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Linux/drivers/net/ethernet/mscc/ (Linux Kernel Version 6.17.9©) Datei vom 24.10.2025 mit Größe 89 kB |
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Impressum ocelot.c Sprache: C |
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// SPDX-License-Identifier: (GPL-2.0 OR MIT) /* * Microsemi Ocelot Switch driver * * Copyright (c) 2017 Microsemi Corporation */ #include <linux/dsa/ocelot.h> #include <linux/if_bridge.h> #include <linux/iopoll.h> #include <linux/phy/phy.h> #include <net/pkt_sched.h> #include <soc/mscc/ocelot_hsio.h> #include <soc/mscc/ocelot_vcap.h> #include "ocelot.h" #include "ocelot_vcap.h" #define TABLE_UPDATE_SLEEP_US 10 #define TABLE_UPDATE_TIMEOUT_US 100000 #define MEM_INIT_SLEEP_US 1000 #define MEM_INIT_TIMEOUT_US 100000 #define OCELOT_RSV_VLAN_RANGE_START 4000 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); } static 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; ocelot_mact_select(ocelot, mac, vid); /* Issue a write command */ ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS); err = ocelot_mact_wait_for_completion(ocelot); return err; } int ocelot_mact_learn(struct ocelot *ocelot, int port, const unsigned char mac[ETH_ALEN], unsigned int vid, enum macaccess_entry_type type) { int ret; mutex_lock(&ocelot->mact_lock); ret = __ocelot_mact_learn(ocelot, port, mac, vid, type); mutex_unlock(&ocelot->mact_lock); return ret; } 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); int ocelot_mact_lookup(struct ocelot *ocelot, int *dst_idx, const unsigned char mac[ETH_ALEN], unsigned int vid, enum macaccess_entry_type *type) { int val; mutex_lock(&ocelot->mact_lock); ocelot_mact_select(ocelot, mac, vid); /* Issue a read command with MACACCESS_VALID=1. */ ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID | ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ), ANA_TABLES_MACACCESS); if (ocelot_mact_wait_for_completion(ocelot)) { mutex_unlock(&ocelot->mact_lock); return -ETIMEDOUT; } /* Read back the entry flags */ val = ocelot_read(ocelot, ANA_TABLES_MACACCESS); mutex_unlock(&ocelot->mact_lock); if (!(val & ANA_TABLES_MACACCESS_VALID)) return -ENOENT; *dst_idx = ANA_TABLES_MACACCESS_DEST_IDX_X(val); *type = ANA_TABLES_MACACCESS_ENTRYTYPE_X(val); return 0; } EXPORT_SYMBOL(ocelot_mact_lookup); int ocelot_mact_learn_streamdata(struct ocelot *ocelot, int dst_idx, const unsigned char mac[ETH_ALEN], unsigned int vid, enum macaccess_entry_type type, int sfid, int ssid) { int ret; mutex_lock(&ocelot->mact_lock); ocelot_write(ocelot, (sfid < 0 ? 0 : ANA_TABLES_STREAMDATA_SFID_VALID) | ANA_TABLES_STREAMDATA_SFID(sfid) | (ssid < 0 ? 0 : ANA_TABLES_STREAMDATA_SSID_VALID) | ANA_TABLES_STREAMDATA_SSID(ssid), ANA_TABLES_STREAMDATA); ret = __ocelot_mact_learn(ocelot, dst_idx, mac, vid, type); mutex_unlock(&ocelot->mact_lock); return ret; } EXPORT_SYMBOL(ocelot_mact_learn_streamdata); 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); } void ocelot_pll5_init(struct ocelot *ocelot) { /* Configure PLL5. This will need a proper CCF driver * The values are coming from the VTSS API for Ocelot */ regmap_write(ocelot->targets[HSIO], HSIO_PLL5G_CFG4, HSIO_PLL5G_CFG4_IB_CTRL(0x7600) | HSIO_PLL5G_CFG4_IB_BIAS_CTRL(0x8)); regmap_write(ocelot->targets[HSIO], HSIO_PLL5G_CFG0, HSIO_PLL5G_CFG0_CORE_CLK_DIV(0x11) | HSIO_PLL5G_CFG0_CPU_CLK_DIV(2) | HSIO_PLL5G_CFG0_ENA_BIAS | HSIO_PLL5G_CFG0_ENA_VCO_BUF | HSIO_PLL5G_CFG0_ENA_CP1 | HSIO_PLL5G_CFG0_SELCPI(2) | HSIO_PLL5G_CFG0_LOOP_BW_RES(0xe) | HSIO_PLL5G_CFG0_SELBGV820(4) | HSIO_PLL5G_CFG0_DIV4 | HSIO_PLL5G_CFG0_ENA_CLKTREE | HSIO_PLL5G_CFG0_ENA_LANE); regmap_write(ocelot->targets[HSIO], HSIO_PLL5G_CFG2, HSIO_PLL5G_CFG2_EN_RESET_FRQ_DET | HSIO_PLL5G_CFG2_EN_RESET_OVERRUN | HSIO_PLL5G_CFG2_GAIN_TEST(0x8) | HSIO_PLL5G_CFG2_ENA_AMPCTRL | HSIO_PLL5G_CFG2_PWD_AMPCTRL_N | HSIO_PLL5G_CFG2_AMPC_SEL(0x10)); } EXPORT_SYMBOL(ocelot_pll5_init); 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 int ocelot_single_vlan_aware_bridge(struct ocelot *ocelot, struct netlink_ext_ack *extack) { struct net_device *bridge = NULL; int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port || !ocelot_port->bridge || !br_vlan_enabled(ocelot_port->bridge)) continue; if (!bridge) { bridge = ocelot_port->bridge; continue; } if (bridge == ocelot_port->bridge) continue; NL_SET_ERR_MSG_MOD(extack, "Only one VLAN-aware bridge is supported"); return -EBUSY; } return 0; } 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; /* Ignore the VLAN added by ocelot_add_vlan_unaware_pvid(), * because this is never active in hardware at the same time as * the bridge VLANs, which only matter in VLAN-aware mode. */ if (vlan->vid >= OCELOT_RSV_VLAN_RANGE_START) 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); } } int ocelot_bridge_num_find(struct ocelot *ocelot, const struct net_device *bridge) { int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (ocelot_port && ocelot_port->bridge == bridge) return ocelot_port->bridge_num; } return -1; } EXPORT_SYMBOL_GPL(ocelot_bridge_num_find); static u16 ocelot_vlan_unaware_pvid(struct ocelot *ocelot, const struct net_device *bridge) { int bridge_num; /* Standalone ports use VID 0 */ if (!bridge) return 0; bridge_num = ocelot_bridge_num_find(ocelot, bridge); if (WARN_ON(bridge_num < 0)) return 0; /* VLAN-unaware bridges use a reserved VID going from 4095 downwards */ return VLAN_N_VID - bridge_num - 1; } /** * ocelot_update_vlan_reclassify_rule() - Make switch aware only to bridge VLAN TPID * * @ocelot: Switch private data structure * @port: Index of ingress port * * IEEE 802.1Q-2018 clauses "5.5 C-VLAN component conformance" and "5.6 S-VLAN * component conformance" suggest that a C-VLAN component should only recognize * and filter on C-Tags, and an S-VLAN component should only recognize and * process based on C-Tags. * * In Linux, as per commit 1a0b20b25732 ("Merge branch 'bridge-next'"), C-VLAN * components are largely represented by a bridge with vlan_protocol 802.1Q, * and S-VLAN components by a bridge with vlan_protocol 802.1ad. * * Currently the driver only offloads vlan_protocol 802.1Q, but the hardware * design is non-conformant, because the switch assigns each frame to a VLAN * based on an entirely different question, as detailed in figure "Basic VLAN * Classification Flow" from its manual and reproduced below. * * Set TAG_TYPE, PCP, DEI, VID to port-default values in VLAN_CFG register * if VLAN_AWARE_ENA[port] and frame has outer tag then: * if VLAN_INNER_TAG_ENA[port] and frame has inner tag then: * TAG_TYPE = (Frame.InnerTPID <> 0x8100) * Set PCP, DEI, VID to values from inner VLAN header * else: * TAG_TYPE = (Frame.OuterTPID <> 0x8100) * Set PCP, DEI, VID to values from outer VLAN header * if VID == 0 then: * VID = VLAN_CFG.VLAN_VID * * Summarized, the switch will recognize both 802.1Q and 802.1ad TPIDs as VLAN * "with equal rights", and just set the TAG_TYPE bit to 0 (if 802.1Q) or to 1 * (if 802.1ad). It will classify based on whichever of the tags is "outer", no * matter what TPID that may have (or "inner", if VLAN_INNER_TAG_ENA[port]). * * In the VLAN Table, the TAG_TYPE information is not accessible - just the * classified VID is - so it is as if each VLAN Table entry is for 2 VLANs: * C-VLAN X, and S-VLAN X. * * Whereas the Linux bridge behavior is to only filter on frames with a TPID * equal to the vlan_protocol, and treat everything else as VLAN-untagged. * * Consider an ingress packet tagged with 802.1ad VID=3 and 802.1Q VID=5, * received on a bridge vlan_filtering=1 vlan_protocol=802.1Q port. This frame * should be treated as 802.1Q-untagged, and classified to the PVID of that * bridge port. Not to VID=3, and not to VID=5. * * The VCAP IS1 TCAM has everything we need to overwrite the choices made in * the basic VLAN classification pipeline: it can match on TAG_TYPE in the key, * and it can modify the classified VID in the action. Thus, for each port * under a vlan_filtering bridge, we can insert a rule in VCAP IS1 lookup 0 to * match on 802.1ad tagged frames and modify their classified VID to the 802.1Q * PVID of the port. This effectively makes it appear to the outside world as * if those packets were processed as VLAN-untagged. * * The rule needs to be updated each time the bridge PVID changes, and needs * to be deleted if the bridge PVID is deleted, or if the port becomes * VLAN-unaware. */ static int ocelot_update_vlan_reclassify_rule(struct ocelot *ocelot, int port) { unsigned long cookie = OCELOT_VCAP_IS1_VLAN_RECLASSIFY(ocelot, port); struct ocelot_vcap_block *block_vcap_is1 = &ocelot->block[VCAP_IS1]; struct ocelot_port *ocelot_port = ocelot->ports[port]; const struct ocelot_bridge_vlan *pvid_vlan; struct ocelot_vcap_filter *filter; int err, val, pcp, dei; bool vid_replace_ena; u16 vid; pvid_vlan = ocelot_port->pvid_vlan; vid_replace_ena = ocelot_port->vlan_aware && pvid_vlan; filter = ocelot_vcap_block_find_filter_by_id(block_vcap_is1, cookie, false); if (!vid_replace_ena) { /* If the reclassification filter doesn't need to exist, delete * it if it was previously installed, and exit doing nothing * otherwise. */ if (filter) return ocelot_vcap_filter_del(ocelot, filter); return 0; } /* The reclassification rule must apply. See if it already exists * or if it must be created. */ /* Treating as VLAN-untagged means using as classified VID equal to * the bridge PVID, and PCP/DEI set to the port default QoS values. */ vid = pvid_vlan->vid; val = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port); pcp = ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_X(val); dei = !!(val & ANA_PORT_QOS_CFG_DP_DEFAULT_VAL); if (filter) { bool changed = false; /* Filter exists, just update it */ if (filter->action.vid != vid) { filter->action.vid = vid; changed = true; } if (filter->action.pcp != pcp) { filter->action.pcp = pcp; changed = true; } if (filter->action.dei != dei) { filter->action.dei = dei; changed = true; } if (!changed) return 0; return ocelot_vcap_filter_replace(ocelot, filter); } /* Filter doesn't exist, create it */ filter = kzalloc(sizeof(*filter), GFP_KERNEL); if (!filter) return -ENOMEM; filter->key_type = OCELOT_VCAP_KEY_ANY; filter->ingress_port_mask = BIT(port); filter->vlan.tpid = OCELOT_VCAP_BIT_1; filter->prio = 1; filter->id.cookie = cookie; filter->id.tc_offload = false; filter->block_id = VCAP_IS1; filter->type = OCELOT_VCAP_FILTER_OFFLOAD; filter->lookup = 0; filter->action.vid_replace_ena = true; filter->action.pcp_dei_ena = true; filter->action.vid = vid; filter->action.pcp = pcp; filter->action.dei = dei; err = ocelot_vcap_filter_add(ocelot, filter, NULL); if (err) kfree(filter); return err; } /* Default vlan to clasify for untagged frames (may be zero) */ static int 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(ocelot, ocelot_port->bridge); 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. * * Also, we only support the bridge 802.1Q VLAN protocol, so * 802.1ad-tagged frames (carrying S-Tags) should be considered * 802.1Q-untagged, and also dropped. */ 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 | ANA_PORT_DROP_CFG_DROP_S_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_DROP_S_TAGGED_ENA, ANA_PORT_DROP_CFG, port); return ocelot_update_vlan_reclassify_rule(ocelot, 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; } static int ocelot_add_vlan_unaware_pvid(struct ocelot *ocelot, int port, const struct net_device *bridge) { u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); return ocelot_vlan_member_add(ocelot, port, vid, true); } static int ocelot_del_vlan_unaware_pvid(struct ocelot *ocelot, int port, const struct net_device *bridge) { u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); return ocelot_vlan_member_del(ocelot, port, vid); } 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; int err = 0; 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; } } err = ocelot_single_vlan_aware_bridge(ocelot, extack); if (err) return err; if (vlan_aware) err = ocelot_del_vlan_unaware_pvid(ocelot, port, ocelot_port->bridge); else if (ocelot_port->bridge) err = ocelot_add_vlan_unaware_pvid(ocelot, port, ocelot_port->bridge); if (err) return err; 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); err = ocelot_port_set_pvid(ocelot, port, ocelot_port->pvid_vlan); if (err) return err; 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; } } if (vid > OCELOT_RSV_VLAN_RANGE_START) { NL_SET_ERR_MSG_MOD(extack, "VLAN range 4000-4095 reserved for VLAN-unaware bridging"); return -EBUSY; } return 0; } EXPORT_SYMBOL(ocelot_vlan_prepare); int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid, bool untagged) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int err; /* Ignore VID 0 added to our RX filter by the 8021q module, since * that collides with OCELOT_STANDALONE_PVID and changes it from * egress-untagged to egress-tagged. */ if (!vid) return 0; err = ocelot_vlan_member_add(ocelot, port, vid, untagged); if (err) return err; /* Default ingress vlan classification */ if (pvid) { err = ocelot_port_set_pvid(ocelot, port, ocelot_bridge_vlan_find(ocelot, vid)); if (err) return err; } else if (ocelot_port->pvid_vlan && ocelot_bridge_vlan_find(ocelot, vid) == ocelot_port->pvid_vlan) { err = ocelot_port_set_pvid(ocelot, port, NULL); if (err) return err; } /* 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]; bool del_pvid = false; int err; if (!vid) return 0; if (ocelot_port->pvid_vlan && ocelot_port->pvid_vlan->vid == vid) del_pvid = true; err = ocelot_vlan_member_del(ocelot, port, vid); if (err) return err; /* Ingress */ if (del_pvid) { err = ocelot_port_set_pvid(ocelot, port, NULL); if (err) return err; } /* 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); /* We need VID 0 to get traffic on standalone ports. * It is added automatically if the 8021q module is loaded, but we * can't rely on that since it might not be. */ ocelot_vlant_set_mask(ocelot, OCELOT_STANDALONE_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; } int ocelot_port_configure_serdes(struct ocelot *ocelot, int port, struct device_node *portnp) { struct ocelot_port *ocelot_port = ocelot->ports[port]; struct device *dev = ocelot->dev; int err; /* Ensure clock signals and speed are set on all QSGMII links */ if (ocelot_port->phy_mode == PHY_INTERFACE_MODE_QSGMII) ocelot_port_rmwl(ocelot_port, 0, DEV_CLOCK_CFG_MAC_TX_RST | DEV_CLOCK_CFG_MAC_RX_RST, DEV_CLOCK_CFG); if (ocelot_port->phy_mode != PHY_INTERFACE_MODE_INTERNAL) { struct phy *serdes = of_phy_get(portnp, NULL); if (IS_ERR(serdes)) { err = PTR_ERR(serdes); dev_err_probe(dev, err, "missing SerDes phys for port %d\n", port); return err; } err = phy_set_mode_ext(serdes, PHY_MODE_ETHERNET, ocelot_port->phy_mode); of_phy_put(serdes); if (err) { dev_err(dev, "Could not SerDes mode on port %d: %pe\n", port, ERR_PTR(err)); return err; } } return 0; } EXPORT_SYMBOL_GPL(ocelot_port_configure_serdes); void ocelot_phylink_mac_config(struct ocelot *ocelot, int port, unsigned int link_an_mode, const struct phylink_link_state *state) { struct ocelot_port *ocelot_port = ocelot->ports[port]; /* Disable HDX fast control */ ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS, DEV_PORT_MISC); /* SGMII only for now */ ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA, PCS1G_MODE_CFG); ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG); /* Enable PCS */ ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG); /* No aneg on SGMII */ ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG); /* No loopback */ ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG); } EXPORT_SYMBOL_GPL(ocelot_phylink_mac_config); 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->speed = SPEED_UNKNOWN; ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA, DEV_MAC_ENA_CFG); if (ocelot->ops->cut_through_fwd) { mutex_lock(&ocelot->fwd_domain_lock); ocelot->ops->cut_through_fwd(ocelot); mutex_unlock(&ocelot->fwd_domain_lock); } 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; ocelot_port->speed = speed; /* 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; } if (rx_pause) 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); /* Don't attempt to send PAUSE frames on the NPI port, it's broken */ if (port != ocelot->npi) 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); /* If the port supports cut-through forwarding, update the masks before * enabling forwarding on the port. */ if (ocelot->ops->cut_through_fwd) { mutex_lock(&ocelot->fwd_domain_lock); /* Workaround for hardware bug - FP doesn't work * at all link speeds for all PHY modes. The function * below also calls ocelot->ops->cut_through_fwd(), * so we don't need to do it twice. */ ocelot_port_update_active_preemptible_tcs(ocelot, port); mutex_unlock(&ocelot->fwd_domain_lock); } /* 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_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; } void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb, u64 timestamp) { struct skb_shared_hwtstamps *shhwtstamps; u64 tod_in_ns, full_ts_in_ns; struct timespec64 ts; 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; } EXPORT_SYMBOL(ocelot_ptp_rx_timestamp); void ocelot_lock_inj_grp(struct ocelot *ocelot, int grp) __acquires(&ocelot->inj_lock) { spin_lock(&ocelot->inj_lock); } EXPORT_SYMBOL_GPL(ocelot_lock_inj_grp); void ocelot_unlock_inj_grp(struct ocelot *ocelot, int grp) __releases(&ocelot->inj_lock) { spin_unlock(&ocelot->inj_lock); } EXPORT_SYMBOL_GPL(ocelot_unlock_inj_grp); void ocelot_lock_xtr_grp(struct ocelot *ocelot, int grp) __acquires(&ocelot->inj_lock) { spin_lock(&ocelot->inj_lock); } EXPORT_SYMBOL_GPL(ocelot_lock_xtr_grp); void ocelot_unlock_xtr_grp(struct ocelot *ocelot, int grp) __releases(&ocelot->inj_lock) { spin_unlock(&ocelot->inj_lock); } EXPORT_SYMBOL_GPL(ocelot_unlock_xtr_grp); void ocelot_lock_xtr_grp_bh(struct ocelot *ocelot, int grp) __acquires(&ocelot->xtr_lock) { spin_lock_bh(&ocelot->xtr_lock); } EXPORT_SYMBOL_GPL(ocelot_lock_xtr_grp_bh); void ocelot_unlock_xtr_grp_bh(struct ocelot *ocelot, int grp) __releases(&ocelot->xtr_lock) { spin_unlock_bh(&ocelot->xtr_lock); } EXPORT_SYMBOL_GPL(ocelot_unlock_xtr_grp_bh); int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb) { u64 timestamp, src_port, len; u32 xfh[OCELOT_TAG_LEN / 4]; struct net_device *dev; struct sk_buff *skb; int sz, buf_len; u32 val, *buf; int err; lockdep_assert_held(&ocelot->xtr_lock); 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_rx_timestamp(ocelot, skb, timestamp); /* 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); lockdep_assert_held(&ocelot->inj_lock); 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); /** * ocelot_ifh_set_basic - Set basic information in Injection Frame Header * @ifh: Pointer to Injection Frame Header memory * @ocelot: Switch private data structure * @port: Egress port number * @rew_op: Egress rewriter operation for PTP * @skb: Pointer to socket buffer (packet) * * Populate the Injection Frame Header with basic information for this skb: the * analyzer bypass bit, destination port, VLAN info, egress rewriter info. */ void ocelot_ifh_set_basic(void *ifh, struct ocelot *ocelot, int port, u32 rew_op, struct sk_buff *skb) { struct ocelot_port *ocelot_port = ocelot->ports[port]; struct net_device *dev = skb->dev; u64 vlan_tci, tag_type; int qos_class; ocelot_xmit_get_vlan_info(skb, ocelot_port->bridge, &vlan_tci, &tag_type); qos_class = netdev_get_num_tc(dev) ? netdev_get_prio_tc_map(dev, skb->priority) : skb->priority; memset(ifh, 0, OCELOT_TAG_LEN); ocelot_ifh_set_bypass(ifh, 1); ocelot_ifh_set_src(ifh, ocelot->num_phys_ports); ocelot_ifh_set_dest(ifh, BIT_ULL(port)); ocelot_ifh_set_qos_class(ifh, qos_class); ocelot_ifh_set_tag_type(ifh, tag_type); ocelot_ifh_set_vlan_tci(ifh, vlan_tci); if (rew_op) ocelot_ifh_set_rew_op(ifh, rew_op); } EXPORT_SYMBOL(ocelot_ifh_set_basic); 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]; unsigned int i, count, last; lockdep_assert_held(&ocelot->inj_lock); ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); ocelot_ifh_set_basic(ifh, ocelot, port, rew_op, skb); 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) { lockdep_assert_held(&ocelot->xtr_lock); 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, const struct net_device *bridge) { if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED); } EXPORT_SYMBOL(ocelot_fdb_add); int ocelot_fdb_del(struct ocelot *ocelot, int port, const unsigned char *addr, u16 vid, const struct net_device *bridge) { if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); return ocelot_mact_forget(ocelot, addr, vid); } EXPORT_SYMBOL(ocelot_fdb_del); /* 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_mact_flush(struct ocelot *ocelot, int port) { int err; mutex_lock(&ocelot->mact_lock); /* Program ageing filter for a single port */ ocelot_write(ocelot, ANA_ANAGEFIL_PID_EN | ANA_ANAGEFIL_PID_VAL(port), ANA_ANAGEFIL); /* Flushing dynamic FDB entries requires two successive age scans */ ocelot_write(ocelot, ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE), ANA_TABLES_MACACCESS); err = ocelot_mact_wait_for_completion(ocelot); if (err) { mutex_unlock(&ocelot->mact_lock); return err; } /* And second... */ ocelot_write(ocelot, ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE), ANA_TABLES_MACACCESS); err = ocelot_mact_wait_for_completion(ocelot); /* Restore ageing filter */ ocelot_write(ocelot, 0, ANA_ANAGEFIL); mutex_unlock(&ocelot->mact_lock); return err; } EXPORT_SYMBOL_GPL(ocelot_mact_flush); 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); /* Hide the reserved VLANs used for * VLAN-unaware bridging. */ if (entry.vid > OCELOT_RSV_VLAN_RANGE_START) entry.vid = 0; err = cb(entry.mac, entry.vid, is_static, data); if (err) break; } } mutex_unlock(&ocelot->mact_lock); return err; } EXPORT_SYMBOL(ocelot_fdb_dump); int ocelot_trap_add(struct ocelot *ocelot, int port, unsigned long cookie, bool take_ts, 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; trap->take_ts = take_ts; trap->is_trap = true; 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; } 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 u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond) { u32 mask = 0; int port; lockdep_assert_held(&ocelot->fwd_domain_lock); 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) mask |= BIT(port); } return mask; } /* The logical port number of a LAG is equal to the lowest numbered physical * port ID present in that LAG. It may change if that port ever leaves the LAG. */ int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond) { int bond_mask = ocelot_get_bond_mask(ocelot, bond); if (!bond_mask) return -ENOENT; return __ffs(bond_mask); } EXPORT_SYMBOL_GPL(ocelot_bond_get_id); /* Returns the mask of user ports assigned to this DSA tag_8021q CPU port. * Note that when CPU ports are in a LAG, the user ports are assigned to the * 'primary' CPU port, the one whose physical port number gives the logical * port number of the LAG. * * We leave PGID_SRC poorly configured for the 'secondary' CPU port in the LAG * (to which no user port is assigned), but it appears that forwarding from * this secondary CPU port looks at the PGID_SRC associated with the logical * port ID that it's assigned to, which *is* configured properly. */ static u32 ocelot_dsa_8021q_cpu_assigned_ports(struct ocelot *ocelot, struct ocelot_port *cpu) { 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->dsa_8021q_cpu == cpu) mask |= BIT(port); } if (cpu->bond) mask &= ~ocelot_get_bond_mask(ocelot, cpu->bond); return mask; } /* Returns the DSA tag_8021q CPU port that the given port is assigned to, * or the bit mask of CPU ports if said CPU port is in a LAG. */ u32 ocelot_port_assigned_dsa_8021q_cpu_mask(struct ocelot *ocelot, int port) { struct ocelot_port *ocelot_port = ocelot->ports[port]; struct ocelot_port *cpu_port = ocelot_port->dsa_8021q_cpu; if (!cpu_port) return 0; if (cpu_port->bond) return ocelot_get_bond_mask(ocelot, cpu_port->bond); return BIT(cpu_port->index); } EXPORT_SYMBOL_GPL(ocelot_port_assigned_dsa_8021q_cpu_mask); u32 ocelot_get_bridge_fwd_mask(struct ocelot *ocelot, int src_port) { struct ocelot_port *ocelot_port = ocelot->ports[src_port]; const struct net_device *bridge; u32 mask = 0; int port; if (!ocelot_port || ocelot_port->stp_state != BR_STATE_FORWARDING) return 0; bridge = ocelot_port->bridge; if (!bridge) 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; } EXPORT_SYMBOL_GPL(ocelot_get_bridge_fwd_mask); static void ocelot_apply_bridge_fwd_mask(struct ocelot *ocelot, bool joining) { int port; lockdep_assert_held(&ocelot->fwd_domain_lock); /* If cut-through forwarding is supported, update the masks before a * port joins the forwarding domain, to avoid potential underruns if it * has the highest speed from the new domain. */ if (joining && ocelot->ops->cut_through_fwd) ocelot->ops->cut_through_fwd(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 ports assigned to them. */ mask = ocelot_dsa_8021q_cpu_assigned_ports(ocelot, ocelot_port); } else if (ocelot_port->bridge) { struct net_device *bond = ocelot_port->bond; mask = ocelot_get_bridge_fwd_mask(ocelot, port); mask &= ~BIT(port); mask |= ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot, port); if (bond) mask &= ~ocelot_get_bond_mask(ocelot, bond); } else { /* Standalone ports forward only to DSA tag_8021q CPU * ports (if those exist), or to the hardware CPU port * module otherwise. */ mask = ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot, port); } ocelot_write_rix(ocelot, mask, ANA_PGID_PGID, PGID_SRC + port); } /* If cut-through forwarding is supported and a port is leaving, there * is a chance that cut-through was disabled on the other ports due to * the port which is leaving (it has a higher link speed). We need to * update the cut-through masks of the remaining ports no earlier than * after the port has left, to prevent underruns from happening between * the cut-through update and the forwarding domain update. */ if (!joining && ocelot->ops->cut_through_fwd) ocelot->ops->cut_through_fwd(ocelot); } /* Update PGID_CPU which is the destination port mask used for whitelisting * unicast addresses filtered towards the host. In the normal and NPI modes, * this points to the analyzer entry for the CPU port module, while in DSA * tag_8021q mode, it is a bit mask of all active CPU ports. * PGID_SRC will take care of forwarding a packet from one user port to * no more than a single CPU port. */ static void ocelot_update_pgid_cpu(struct ocelot *ocelot) { int pgid_cpu = 0; int port; for (port = 0; port < ocelot->num_phys_ports; port++) { struct ocelot_port *ocelot_port = ocelot->ports[port]; if (!ocelot_port || !ocelot_port->is_dsa_8021q_cpu) continue; pgid_cpu |= BIT(port); } if (!pgid_cpu) pgid_cpu = BIT(ocelot->num_phys_ports); ocelot_write_rix(ocelot, pgid_cpu, ANA_PGID_PGID, PGID_CPU); } void ocelot_port_setup_dsa_8021q_cpu(struct ocelot *ocelot, int cpu) { struct ocelot_port *cpu_port = ocelot->ports[cpu]; u16 vid; mutex_lock(&ocelot->fwd_domain_lock); cpu_port->is_dsa_8021q_cpu = true; for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++) ocelot_vlan_member_add(ocelot, cpu, vid, true); ocelot_update_pgid_cpu(ocelot); mutex_unlock(&ocelot->fwd_domain_lock); } EXPORT_SYMBOL_GPL(ocelot_port_setup_dsa_8021q_cpu); void ocelot_port_teardown_dsa_8021q_cpu(struct ocelot *ocelot, int cpu) { struct ocelot_port *cpu_port = ocelot->ports[cpu]; u16 vid; mutex_lock(&ocelot->fwd_domain_lock); cpu_port->is_dsa_8021q_cpu = false; for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++) ocelot_vlan_member_del(ocelot, cpu_port->index, vid); ocelot_update_pgid_cpu(ocelot); mutex_unlock(&ocelot->fwd_domain_lock); } EXPORT_SYMBOL_GPL(ocelot_port_teardown_dsa_8021q_cpu); void ocelot_port_assign_dsa_8021q_cpu(struct ocelot *ocelot, int port, int cpu) { struct ocelot_port *cpu_port = ocelot->ports[cpu]; mutex_lock(&ocelot->fwd_domain_lock); ocelot->ports[port]->dsa_8021q_cpu = cpu_port; ocelot_apply_bridge_fwd_mask(ocelot, true); mutex_unlock(&ocelot->fwd_domain_lock); } EXPORT_SYMBOL_GPL(ocelot_port_assign_dsa_8021q_cpu); void ocelot_port_unassign_dsa_8021q_cpu(struct ocelot *ocelot, int port) { mutex_lock(&ocelot->fwd_domain_lock); ocelot->ports[port]->dsa_8021q_cpu = NULL; ocelot_apply_bridge_fwd_mask(ocelot, true); mutex_unlock(&ocelot->fwd_domain_lock); } EXPORT_SYMBOL_GPL(ocelot_port_unassign_dsa_8021q_cpu); 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; mutex_lock(&ocelot->fwd_domain_lock); 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, state == BR_STATE_FORWARDING); mutex_unlock(&ocelot->fwd_domain_lock); } 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, const struct net_device *bridge) { unsigned char addr[ETH_ALEN]; struct ocelot_multicast *mc; struct ocelot_pgid *pgid; u16 vid = mdb->vid; if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 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, const struct net_device *bridge) { unsigned char addr[ETH_ALEN]; struct ocelot_multicast *mc; struct ocelot_pgid *pgid; u16 vid = mdb->vid; if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 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); int ocelot_port_bridge_join(struct ocelot *ocelot, int port, struct net_device *bridge, int bridge_num, struct netlink_ext_ack *extack) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int err; err = ocelot_single_vlan_aware_bridge(ocelot, extack); if (err) return err; mutex_lock(&ocelot->fwd_domain_lock); ocelot_port->bridge = bridge; ocelot_port->bridge_num = bridge_num; ocelot_apply_bridge_fwd_mask(ocelot, true); mutex_unlock(&ocelot->fwd_domain_lock); if (br_vlan_enabled(bridge)) return 0; return ocelot_add_vlan_unaware_pvid(ocelot, port, bridge); } 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]; mutex_lock(&ocelot->fwd_domain_lock); if (!br_vlan_enabled(bridge)) ocelot_del_vlan_unaware_pvid(ocelot, port, bridge); ocelot_port->bridge = NULL; ocelot_port->bridge_num = -1; ocelot_port_set_pvid(ocelot, port, NULL); ocelot_port_manage_port_tag(ocelot, port); ocelot_apply_bridge_fwd_mask(ocelot, false); mutex_unlock(&ocelot->fwd_domain_lock); } 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); for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) { struct ocelot_port *ocelot_port = ocelot->ports[port]; // Destination mask ocelot_write_rix(ocelot, bond_mask, ANA_PGID_PGID, port); if (ocelot_port->lag_tx_active) 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 = ocelot_bond_get_id(ocelot, bond); 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); } } } static int ocelot_migrate_mc(struct ocelot *ocelot, struct ocelot_multicast *mc, unsigned long from_mask, unsigned long to_mask) { unsigned char addr[ETH_ALEN]; struct ocelot_pgid *pgid; u16 vid = mc->vid; dev_dbg(ocelot->dev, "Migrating multicast %pM vid %d from port mask 0x%lx to 0x%lx\n", mc->addr, mc->vid, from_mask, to_mask); /* First clean up the current port mask from hardware, 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 &= ~from_mask; mc->ports |= to_mask; 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); } int ocelot_migrate_mdbs(struct ocelot *ocelot, unsigned long from_mask, unsigned long to_mask) { struct ocelot_multicast *mc; int err; list_for_each_entry(mc, &ocelot->multicast, list) { if (!(mc->ports & from_mask)) continue; err = ocelot_migrate_mc(ocelot, mc, from_mask, to_mask); if (err) return err; } return 0; } EXPORT_SYMBOL_GPL(ocelot_migrate_mdbs); /* Documentation for PORTID_VAL says: * Logical port number for front port. If port is not a member of a LLAG, * then PORTID must be set to the physical port number. * If port is a member of a LLAG, then PORTID must be set to the common * PORTID_VAL used for all member ports of the LLAG. * The value must not exceed the number of physical ports on the device. * * This means we have little choice but to migrate FDB entries pointing towards * a logical port when that changes. */ static void ocelot_migrate_lag_fdbs(struct ocelot *ocelot, struct net_device *bond, int lag) { struct ocelot_lag_fdb *fdb; int err; lockdep_assert_held(&ocelot->fwd_domain_lock); list_for_each_entry(fdb, &ocelot->lag_fdbs, list) { if (fdb->bond != bond) continue; err = ocelot_mact_forget(ocelot, fdb->addr, fdb->vid); if (err) { dev_err(ocelot->dev, "failed to delete LAG %s FDB %pM vid %d: %pe\n", bond->name, fdb->addr, fdb->vid, ERR_PTR(err)); } err = ocelot_mact_learn(ocelot, lag, fdb->addr, fdb->vid, ENTRYTYPE_LOCKED); if (err) { dev_err(ocelot->dev, "failed to migrate LAG %s FDB %pM vid %d: %pe\n", bond->name, fdb->addr, fdb->vid, ERR_PTR(err)); } } } int ocelot_port_lag_join(struct ocelot *ocelot, int port, struct net_device *bond, struct netdev_lag_upper_info *info, struct netlink_ext_ack *extack) { if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { NL_SET_ERR_MSG_MOD(extack, "Can only offload LAG using hash TX type"); return -EOPNOTSUPP; } mutex_lock(&ocelot->fwd_domain_lock); ocelot->ports[port]->bond = bond; ocelot_setup_logical_port_ids(ocelot); ocelot_apply_bridge_fwd_mask(ocelot, true); ocelot_set_aggr_pgids(ocelot); mutex_unlock(&ocelot->fwd_domain_lock); return 0; } EXPORT_SYMBOL(ocelot_port_lag_join); void ocelot_port_lag_leave(struct ocelot *ocelot, int port, struct net_device *bond) { int old_lag_id, new_lag_id; mutex_lock(&ocelot->fwd_domain_lock); old_lag_id = ocelot_bond_get_id(ocelot, bond); ocelot->ports[port]->bond = NULL; ocelot_setup_logical_port_ids(ocelot); ocelot_apply_bridge_fwd_mask(ocelot, false); ocelot_set_aggr_pgids(ocelot); new_lag_id = ocelot_bond_get_id(ocelot, bond); if (new_lag_id >= 0 && old_lag_id != new_lag_id) ocelot_migrate_lag_fdbs(ocelot, bond, new_lag_id); mutex_unlock(&ocelot->fwd_domain_lock); } 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]; mutex_lock(&ocelot->fwd_domain_lock); ocelot_port->lag_tx_active = lag_tx_active; /* Rebalance the LAGs */ ocelot_set_aggr_pgids(ocelot); mutex_unlock(&ocelot->fwd_domain_lock); } EXPORT_SYMBOL(ocelot_port_lag_change); int ocelot_lag_fdb_add(struct ocelot *ocelot, struct net_device *bond, const unsigned char *addr, u16 vid, const struct net_device *bridge) { struct ocelot_lag_fdb *fdb; int lag, err; fdb = kzalloc(sizeof(*fdb), GFP_KERNEL); if (!fdb) return -ENOMEM; mutex_lock(&ocelot->fwd_domain_lock); if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); ether_addr_copy(fdb->addr, addr); fdb->vid = vid; fdb->bond = bond; lag = ocelot_bond_get_id(ocelot, bond); err = ocelot_mact_learn(ocelot, lag, addr, vid, ENTRYTYPE_LOCKED); if (err) { mutex_unlock(&ocelot->fwd_domain_lock); kfree(fdb); return err; } list_add_tail(&fdb->list, &ocelot->lag_fdbs); mutex_unlock(&ocelot->fwd_domain_lock); return 0; } EXPORT_SYMBOL_GPL(ocelot_lag_fdb_add); int ocelot_lag_fdb_del(struct ocelot *ocelot, struct net_device *bond, const unsigned char *addr, u16 vid, const struct net_device *bridge) { struct ocelot_lag_fdb *fdb, *tmp; mutex_lock(&ocelot->fwd_domain_lock); if (!vid) vid = ocelot_vlan_unaware_pvid(ocelot, bridge); list_for_each_entry_safe(fdb, tmp, &ocelot->lag_fdbs, list) { if (!ether_addr_equal(fdb->addr, addr) || fdb->vid != vid || fdb->bond != bond) continue; ocelot_mact_forget(ocelot, addr, vid); list_del(&fdb->list); mutex_unlock(&ocelot->fwd_domain_lock); kfree(fdb); return 0; } mutex_unlock(&ocelot->fwd_domain_lock); return -ENOENT; } EXPORT_SYMBOL_GPL(ocelot_lag_fdb_del); /* 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); ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV4); ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV6); } 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); int ocelot_port_get_default_prio(struct ocelot *ocelot, int port) { int val = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port); return ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_X(val); } EXPORT_SYMBOL_GPL(ocelot_port_get_default_prio); int ocelot_port_set_default_prio(struct ocelot *ocelot, int port, u8 prio) { if (prio >= OCELOT_NUM_TC) return -ERANGE; ocelot_rmw_gix(ocelot, ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL(prio), ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_M, ANA_PORT_QOS_CFG, port); return ocelot_update_vlan_reclassify_rule(ocelot, port); } EXPORT_SYMBOL_GPL(ocelot_port_set_default_prio); int ocelot_port_get_dscp_prio(struct ocelot *ocelot, int port, u8 dscp) { int qos_cfg = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port); int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); /* Return error if DSCP prioritization isn't enabled */ if (!(qos_cfg & ANA_PORT_QOS_CFG_QOS_DSCP_ENA)) return -EOPNOTSUPP; if (qos_cfg & ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA) { dscp = ANA_DSCP_CFG_DSCP_TRANSLATE_VAL_X(dscp_cfg); /* Re-read ANA_DSCP_CFG for the translated DSCP */ dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); } /* If the DSCP value is not trusted, the QoS classification falls back * to VLAN PCP or port-based default. */ if (!(dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA)) return -EOPNOTSUPP; return ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg); } EXPORT_SYMBOL_GPL(ocelot_port_get_dscp_prio); int ocelot_port_add_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio) { int mask, val; if (prio >= OCELOT_NUM_TC) return -ERANGE; /* There is at least one app table priority (this one), so we need to * make sure DSCP prioritization is enabled on the port. * Also make sure DSCP translation is disabled * (dcbnl doesn't support it). */ mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA | ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA; ocelot_rmw_gix(ocelot, ANA_PORT_QOS_CFG_QOS_DSCP_ENA, mask, ANA_PORT_QOS_CFG, port); /* Trust this DSCP value and map it to the given QoS class */ val = ANA_DSCP_CFG_DSCP_TRUST_ENA | ANA_DSCP_CFG_QOS_DSCP_VAL(prio); ocelot_write_rix(ocelot, val, ANA_DSCP_CFG, dscp); return 0; } EXPORT_SYMBOL_GPL(ocelot_port_add_dscp_prio); int ocelot_port_del_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio) { int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); int mask, i; /* During a "dcb app replace" command, the new app table entry will be * added first, then the old one will be deleted. But the hardware only * supports one QoS class per DSCP value (duh), so if we blindly delete * the app table entry for this DSCP value, we end up deleting the * entry with the new priority. Avoid that by checking whether user * space wants to delete the priority which is currently configured, or * something else which is no longer current. */ if (ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg) != prio) return 0; /* Untrust this DSCP value */ ocelot_write_rix(ocelot, 0, ANA_DSCP_CFG, dscp); for (i = 0; i < 64; i++) { int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, i); /* There are still app table entries on the port, so we need to * keep DSCP enabled, nothing to do. */ if (dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA) return 0; } /* Disable DSCP QoS classification if there isn't any trusted * DSCP value left. */ mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA | ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA; ocelot_rmw_gix(ocelot, 0, mask, ANA_PORT_QOS_CFG, port); return 0; } EXPORT_SYMBOL_GPL(ocelot_port_del_dscp_prio); struct ocelot_mirror *ocelot_mirror_get(struct ocelot *ocelot, int to, struct netlink_ext_ack *extack) { struct ocelot_mirror *m = ocelot->mirror; if (m) { if (m->to != to) { NL_SET_ERR_MSG_MOD(extack, "Mirroring already configured towards different egress port"); return ERR_PTR(-EBUSY); } refcount_inc(&m->refcount); return m; } m = kzalloc(sizeof(*m), GFP_KERNEL); if (!m) return ERR_PTR(-ENOMEM); m->to = to; refcount_set(&m->refcount, 1); ocelot->mirror = m; /* Program the mirror port to hardware */ ocelot_write(ocelot, BIT(to), ANA_MIRRORPORTS); return m; } void ocelot_mirror_put(struct ocelot *ocelot) { struct ocelot_mirror *m = ocelot->mirror; if (!refcount_dec_and_test(&m->refcount)) return; ocelot_write(ocelot, 0, ANA_MIRRORPORTS); ocelot->mirror = NULL; kfree(m); } int ocelot_port_mirror_add(struct ocelot *ocelot, int from, int to, bool ingress, struct netlink_ext_ack *extack) { struct ocelot_mirror *m = ocelot_mirror_get(ocelot, to, extack); if (IS_ERR(m)) return PTR_ERR(m); if (ingress) { ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, ANA_PORT_PORT_CFG, from); } else { ocelot_rmw(ocelot, BIT(from), BIT(from), ANA_EMIRRORPORTS); } return 0; } EXPORT_SYMBOL_GPL(ocelot_port_mirror_add); void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress) { if (ingress) { ocelot_rmw_gix(ocelot, 0, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, ANA_PORT_PORT_CFG, from); } else { ocelot_rmw(ocelot, 0, BIT(from), ANA_EMIRRORPORTS); } ocelot_mirror_put(ocelot); } EXPORT_SYMBOL_GPL(ocelot_port_mirror_del); static void ocelot_port_reset_mqprio(struct ocelot *ocelot, int port) { struct net_device *dev = ocelot->ops->port_to_netdev(ocelot, port); netdev_reset_tc(dev); ocelot_port_change_fp(ocelot, port, 0); } int ocelot_port_mqprio(struct ocelot *ocelot, int port, struct tc_mqprio_qopt_offload *mqprio) { struct net_device *dev = ocelot->ops->port_to_netdev(ocelot, port); struct netlink_ext_ack *extack = mqprio->extack; struct tc_mqprio_qopt *qopt = &mqprio->qopt; int num_tc = qopt->num_tc; int tc, err; if (!num_tc) { ocelot_port_reset_mqprio(ocelot, port); return 0; } err = netdev_set_num_tc(dev, num_tc); if (err) return err; for (tc = 0; tc < num_tc; tc++) { if (qopt->count[tc] != 1) { NL_SET_ERR_MSG_MOD(extack, "Only one TXQ per TC supported"); return -EINVAL; } err = netdev_set_tc_queue(dev, tc, 1, qopt->offset[tc]); if (err) goto err_reset_tc; } err = netif_set_real_num_tx_queues(dev, num_tc); if (err) goto err_reset_tc; ocelot_port_change_fp(ocelot, port, mqprio->preemptible_tcs); return 0; err_reset_tc: ocelot_port_reset_mqprio(ocelot, port); return err; } EXPORT_SYMBOL_GPL(ocelot_port_mqprio); 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_STANDALONE_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); } static int ocelot_mem_init_status(struct ocelot *ocelot) { unsigned int val; int err; err = regmap_field_read(ocelot->regfields[SYS_RESET_CFG_MEM_INIT], &val); return err ?: val; } int ocelot_reset(struct ocelot *ocelot) { int err; u32 val; err = regmap_field_write(ocelot->regfields[SYS_RESET_CFG_MEM_INIT], 1); if (err) return err; err = regmap_field_write(ocelot->regfields[SYS_RESET_CFG_MEM_ENA], 1); if (err) return err; /* MEM_INIT is a self-clearing bit. Wait for it to be cleared (should be * 100us) before enabling the switch core. */ err = readx_poll_timeout(ocelot_mem_init_status, ocelot, val, !val, MEM_INIT_SLEEP_US, MEM_INIT_TIMEOUT_US); if (err) return err; err = regmap_field_write(ocelot->regfields[SYS_RESET_CFG_MEM_ENA], 1); if (err) return err; return regmap_field_write(ocelot->regfields[SYS_RESET_CFG_CORE_ENA], 1); } EXPORT_SYMBOL(ocelot_reset); int ocelot_init(struct ocelot *ocelot) { 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; } } mutex_init(&ocelot->mact_lock); mutex_init(&ocelot->fwd_domain_lock); spin_lock_init(&ocelot->ptp_clock_lock); spin_lock_init(&ocelot->ts_id_lock); spin_lock_init(&ocelot->inj_lock); spin_lock_init(&ocelot->xtr_lock); ocelot->owq = alloc_ordered_workqueue("ocelot-owq", 0); if (!ocelot->owq) return -ENOMEM; ret = ocelot_stats_init(ocelot); if (ret) goto err_stats_init; INIT_LIST_HEAD(&ocelot->multicast); INIT_LIST_HEAD(&ocelot->pgids); INIT_LIST_HEAD(&ocelot->vlans); INIT_LIST_HEAD(&ocelot->lag_fdbs); ocelot_detect_features(ocelot); ocelot_mact_init(ocelot); ocelot_vlan_init(ocelot); ocelot_vcap_init(ocelot); ocelot_cpu_port_init(ocelot); if (ocelot->ops->psfp_init) ocelot->ops->psfp_init(ocelot); if (ocelot->mm_supported) { ret = ocelot_mm_init(ocelot); if (ret) goto err_mm_init; } 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); return 0; err_mm_init: ocelot_stats_deinit(ocelot); err_stats_init: destroy_workqueue(ocelot->owq); return ret; } EXPORT_SYMBOL(ocelot_init); void ocelot_deinit(struct ocelot *ocelot) { ocelot_stats_deinit(ocelot); destroy_workqueue(ocelot->owq); } 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_DESCRIPTION("Microsemi Ocelot switch family library"); MODULE_LICENSE("Dual MIT/GPL");
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2026-10-10