2 * drivers/net/ethernet/mellanox/mlxsw/switchx2.c
3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/types.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/slab.h>
43 #include <linux/device.h>
44 #include <linux/skbuff.h>
45 #include <linux/if_vlan.h>
46 #include <net/switchdev.h>
47 #include <generated/utsrelease.h>
55 static const char mlxsw_sx_driver_name[] = "mlxsw_switchx2";
56 static const char mlxsw_sx_driver_version[] = "1.0";
60 #define MLXSW_SW_HW_ID_LEN 6
63 struct mlxsw_sx_port **ports;
64 struct mlxsw_core *core;
65 const struct mlxsw_bus_info *bus_info;
66 u8 hw_id[MLXSW_SW_HW_ID_LEN];
69 struct mlxsw_sx_port_pcpu_stats {
74 struct u64_stats_sync syncp;
78 struct mlxsw_sx_port {
79 struct net_device *dev;
80 struct mlxsw_sx_port_pcpu_stats __percpu *pcpu_stats;
81 struct mlxsw_sx *mlxsw_sx;
89 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
92 * Packet control type.
93 * 0 - Ethernet control (e.g. EMADs, LACP)
96 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
99 * Packet protocol type. Must be set to 1 (Ethernet).
101 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
104 * Egress TClass to be used on the egress device on the egress port.
105 * The MSB is specified in the 'ctclass3' field.
106 * Range is 0-15, where 15 is the highest priority.
108 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 18, 3);
111 * Switch partition ID.
113 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
116 * Destination local port for unicast packets.
117 * Destination multicast ID for multicast packets.
119 * Control packets are directed to a specific egress port, while data
120 * packets are transmitted through the CPU port (0) into the switch partition,
121 * where forwarding rules are applied.
123 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
126 * See field 'etclass'.
128 MLXSW_ITEM32(tx, hdr, ctclass3, 0x04, 14, 1);
131 * RDQ for control packets sent to remote CPU.
132 * Must be set to 0x1F for EMADs, otherwise 0.
134 MLXSW_ITEM32(tx, hdr, rdq, 0x04, 9, 5);
137 * Signature control for packets going to CPU. Must be set to 0.
139 MLXSW_ITEM32(tx, hdr, cpu_sig, 0x04, 0, 9);
142 * Stacking protocl signature. Must be set to 0xE0E0.
144 MLXSW_ITEM32(tx, hdr, sig, 0x0C, 16, 16);
149 MLXSW_ITEM32(tx, hdr, stclass, 0x0C, 13, 3);
152 * EMAD bit. Must be set for EMADs.
154 MLXSW_ITEM32(tx, hdr, emad, 0x0C, 5, 1);
158 * 6 - Control packets
160 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
162 static void mlxsw_sx_txhdr_construct(struct sk_buff *skb,
163 const struct mlxsw_tx_info *tx_info)
165 char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
166 bool is_emad = tx_info->is_emad;
168 memset(txhdr, 0, MLXSW_TXHDR_LEN);
170 /* We currently set default values for the egress tclass (QoS). */
171 mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_0);
172 mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
173 mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
174 mlxsw_tx_hdr_etclass_set(txhdr, is_emad ? MLXSW_TXHDR_ETCLASS_6 :
175 MLXSW_TXHDR_ETCLASS_5);
176 mlxsw_tx_hdr_swid_set(txhdr, 0);
177 mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
178 mlxsw_tx_hdr_ctclass3_set(txhdr, MLXSW_TXHDR_CTCLASS3);
179 mlxsw_tx_hdr_rdq_set(txhdr, is_emad ? MLXSW_TXHDR_RDQ_EMAD :
180 MLXSW_TXHDR_RDQ_OTHER);
181 mlxsw_tx_hdr_cpu_sig_set(txhdr, MLXSW_TXHDR_CPU_SIG);
182 mlxsw_tx_hdr_sig_set(txhdr, MLXSW_TXHDR_SIG);
183 mlxsw_tx_hdr_stclass_set(txhdr, MLXSW_TXHDR_STCLASS_NONE);
184 mlxsw_tx_hdr_emad_set(txhdr, is_emad ? MLXSW_TXHDR_EMAD :
185 MLXSW_TXHDR_NOT_EMAD);
186 mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
189 static int mlxsw_sx_port_admin_status_set(struct mlxsw_sx_port *mlxsw_sx_port,
192 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
193 char paos_pl[MLXSW_REG_PAOS_LEN];
195 mlxsw_reg_paos_pack(paos_pl, mlxsw_sx_port->local_port,
196 is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
197 MLXSW_PORT_ADMIN_STATUS_DOWN);
198 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(paos), paos_pl);
201 static int mlxsw_sx_port_oper_status_get(struct mlxsw_sx_port *mlxsw_sx_port,
204 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
205 char paos_pl[MLXSW_REG_PAOS_LEN];
209 mlxsw_reg_paos_pack(paos_pl, mlxsw_sx_port->local_port, 0);
210 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(paos), paos_pl);
213 oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
214 *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
218 static int mlxsw_sx_port_mtu_set(struct mlxsw_sx_port *mlxsw_sx_port, u16 mtu)
220 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
221 char pmtu_pl[MLXSW_REG_PMTU_LEN];
225 mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
226 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sx_port->local_port, 0);
227 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(pmtu), pmtu_pl);
230 max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
235 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sx_port->local_port, mtu);
236 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(pmtu), pmtu_pl);
239 static int mlxsw_sx_port_swid_set(struct mlxsw_sx_port *mlxsw_sx_port, u8 swid)
241 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
242 char pspa_pl[MLXSW_REG_PSPA_LEN];
244 mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sx_port->local_port);
245 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(pspa), pspa_pl);
248 static int mlxsw_sx_port_module_check(struct mlxsw_sx_port *mlxsw_sx_port,
251 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
252 char pmlp_pl[MLXSW_REG_PMLP_LEN];
255 mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sx_port->local_port);
256 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(pmlp), pmlp_pl);
259 *p_usable = mlxsw_reg_pmlp_width_get(pmlp_pl) ? true : false;
263 static int mlxsw_sx_port_open(struct net_device *dev)
265 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
268 err = mlxsw_sx_port_admin_status_set(mlxsw_sx_port, true);
271 netif_start_queue(dev);
275 static int mlxsw_sx_port_stop(struct net_device *dev)
277 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
279 netif_stop_queue(dev);
280 return mlxsw_sx_port_admin_status_set(mlxsw_sx_port, false);
283 static netdev_tx_t mlxsw_sx_port_xmit(struct sk_buff *skb,
284 struct net_device *dev)
286 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
287 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
288 struct mlxsw_sx_port_pcpu_stats *pcpu_stats;
289 const struct mlxsw_tx_info tx_info = {
290 .local_port = mlxsw_sx_port->local_port,
293 struct sk_buff *skb_old = NULL;
296 if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
297 struct sk_buff *skb_new;
300 skb_new = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
302 this_cpu_inc(mlxsw_sx_port->pcpu_stats->tx_dropped);
303 dev_kfree_skb_any(skb_old);
308 mlxsw_sx_txhdr_construct(skb, &tx_info);
309 err = mlxsw_core_skb_transmit(mlxsw_sx, skb, &tx_info);
310 if (err == -EAGAIN) {
312 dev_kfree_skb_any(skb);
313 return NETDEV_TX_BUSY;
317 dev_kfree_skb_any(skb_old);
320 pcpu_stats = this_cpu_ptr(mlxsw_sx_port->pcpu_stats);
321 u64_stats_update_begin(&pcpu_stats->syncp);
322 pcpu_stats->tx_packets++;
323 pcpu_stats->tx_bytes += skb->len;
324 u64_stats_update_end(&pcpu_stats->syncp);
326 this_cpu_inc(mlxsw_sx_port->pcpu_stats->tx_dropped);
327 dev_kfree_skb_any(skb);
332 static int mlxsw_sx_port_change_mtu(struct net_device *dev, int mtu)
334 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
337 err = mlxsw_sx_port_mtu_set(mlxsw_sx_port, mtu);
344 static struct rtnl_link_stats64 *
345 mlxsw_sx_port_get_stats64(struct net_device *dev,
346 struct rtnl_link_stats64 *stats)
348 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
349 struct mlxsw_sx_port_pcpu_stats *p;
350 u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
355 for_each_possible_cpu(i) {
356 p = per_cpu_ptr(mlxsw_sx_port->pcpu_stats, i);
358 start = u64_stats_fetch_begin_irq(&p->syncp);
359 rx_packets = p->rx_packets;
360 rx_bytes = p->rx_bytes;
361 tx_packets = p->tx_packets;
362 tx_bytes = p->tx_bytes;
363 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
365 stats->rx_packets += rx_packets;
366 stats->rx_bytes += rx_bytes;
367 stats->tx_packets += tx_packets;
368 stats->tx_bytes += tx_bytes;
369 /* tx_dropped is u32, updated without syncp protection. */
370 tx_dropped += p->tx_dropped;
372 stats->tx_dropped = tx_dropped;
376 static const struct net_device_ops mlxsw_sx_port_netdev_ops = {
377 .ndo_open = mlxsw_sx_port_open,
378 .ndo_stop = mlxsw_sx_port_stop,
379 .ndo_start_xmit = mlxsw_sx_port_xmit,
380 .ndo_change_mtu = mlxsw_sx_port_change_mtu,
381 .ndo_get_stats64 = mlxsw_sx_port_get_stats64,
384 static void mlxsw_sx_port_get_drvinfo(struct net_device *dev,
385 struct ethtool_drvinfo *drvinfo)
387 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
388 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
390 strlcpy(drvinfo->driver, mlxsw_sx_driver_name, sizeof(drvinfo->driver));
391 strlcpy(drvinfo->version, mlxsw_sx_driver_version,
392 sizeof(drvinfo->version));
393 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
395 mlxsw_sx->bus_info->fw_rev.major,
396 mlxsw_sx->bus_info->fw_rev.minor,
397 mlxsw_sx->bus_info->fw_rev.subminor);
398 strlcpy(drvinfo->bus_info, mlxsw_sx->bus_info->device_name,
399 sizeof(drvinfo->bus_info));
402 struct mlxsw_sx_port_hw_stats {
403 char str[ETH_GSTRING_LEN];
404 u64 (*getter)(char *payload);
407 static const struct mlxsw_sx_port_hw_stats mlxsw_sx_port_hw_stats[] = {
409 .str = "a_frames_transmitted_ok",
410 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
413 .str = "a_frames_received_ok",
414 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
417 .str = "a_frame_check_sequence_errors",
418 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
421 .str = "a_alignment_errors",
422 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
425 .str = "a_octets_transmitted_ok",
426 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
429 .str = "a_octets_received_ok",
430 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
433 .str = "a_multicast_frames_xmitted_ok",
434 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
437 .str = "a_broadcast_frames_xmitted_ok",
438 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
441 .str = "a_multicast_frames_received_ok",
442 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
445 .str = "a_broadcast_frames_received_ok",
446 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
449 .str = "a_in_range_length_errors",
450 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
453 .str = "a_out_of_range_length_field",
454 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
457 .str = "a_frame_too_long_errors",
458 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
461 .str = "a_symbol_error_during_carrier",
462 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
465 .str = "a_mac_control_frames_transmitted",
466 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
469 .str = "a_mac_control_frames_received",
470 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
473 .str = "a_unsupported_opcodes_received",
474 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
477 .str = "a_pause_mac_ctrl_frames_received",
478 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
481 .str = "a_pause_mac_ctrl_frames_xmitted",
482 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
486 #define MLXSW_SX_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sx_port_hw_stats)
488 static void mlxsw_sx_port_get_strings(struct net_device *dev,
489 u32 stringset, u8 *data)
496 for (i = 0; i < MLXSW_SX_PORT_HW_STATS_LEN; i++) {
497 memcpy(p, mlxsw_sx_port_hw_stats[i].str,
499 p += ETH_GSTRING_LEN;
505 static void mlxsw_sx_port_get_stats(struct net_device *dev,
506 struct ethtool_stats *stats, u64 *data)
508 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
509 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
510 char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
514 mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sx_port->local_port);
515 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(ppcnt), ppcnt_pl);
516 for (i = 0; i < MLXSW_SX_PORT_HW_STATS_LEN; i++)
517 data[i] = !err ? mlxsw_sx_port_hw_stats[i].getter(ppcnt_pl) : 0;
520 static int mlxsw_sx_port_get_sset_count(struct net_device *dev, int sset)
524 return MLXSW_SX_PORT_HW_STATS_LEN;
530 struct mlxsw_sx_port_link_mode {
537 static const struct mlxsw_sx_port_link_mode mlxsw_sx_port_link_mode[] = {
539 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
540 .supported = SUPPORTED_100baseT_Full,
541 .advertised = ADVERTISED_100baseT_Full,
545 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
549 .mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
550 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
551 .supported = SUPPORTED_1000baseKX_Full,
552 .advertised = ADVERTISED_1000baseKX_Full,
556 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
557 .supported = SUPPORTED_10000baseT_Full,
558 .advertised = ADVERTISED_10000baseT_Full,
562 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
563 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
564 .supported = SUPPORTED_10000baseKX4_Full,
565 .advertised = ADVERTISED_10000baseKX4_Full,
569 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
570 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
571 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
572 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
573 .supported = SUPPORTED_10000baseKR_Full,
574 .advertised = ADVERTISED_10000baseKR_Full,
578 .mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
579 .supported = SUPPORTED_20000baseKR2_Full,
580 .advertised = ADVERTISED_20000baseKR2_Full,
584 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
585 .supported = SUPPORTED_40000baseCR4_Full,
586 .advertised = ADVERTISED_40000baseCR4_Full,
590 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
591 .supported = SUPPORTED_40000baseKR4_Full,
592 .advertised = ADVERTISED_40000baseKR4_Full,
596 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
597 .supported = SUPPORTED_40000baseSR4_Full,
598 .advertised = ADVERTISED_40000baseSR4_Full,
602 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
603 .supported = SUPPORTED_40000baseLR4_Full,
604 .advertised = ADVERTISED_40000baseLR4_Full,
608 .mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
609 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
610 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
614 .mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
615 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
616 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
620 .mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
621 .supported = SUPPORTED_56000baseKR4_Full,
622 .advertised = ADVERTISED_56000baseKR4_Full,
626 .mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
627 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
628 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
629 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
634 #define MLXSW_SX_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sx_port_link_mode)
636 static u32 mlxsw_sx_from_ptys_supported_port(u32 ptys_eth_proto)
638 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
639 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
640 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
641 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
642 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
643 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
644 return SUPPORTED_FIBRE;
646 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
647 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
648 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
649 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
650 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
651 return SUPPORTED_Backplane;
655 static u32 mlxsw_sx_from_ptys_supported_link(u32 ptys_eth_proto)
660 for (i = 0; i < MLXSW_SX_PORT_LINK_MODE_LEN; i++) {
661 if (ptys_eth_proto & mlxsw_sx_port_link_mode[i].mask)
662 modes |= mlxsw_sx_port_link_mode[i].supported;
667 static u32 mlxsw_sx_from_ptys_advert_link(u32 ptys_eth_proto)
672 for (i = 0; i < MLXSW_SX_PORT_LINK_MODE_LEN; i++) {
673 if (ptys_eth_proto & mlxsw_sx_port_link_mode[i].mask)
674 modes |= mlxsw_sx_port_link_mode[i].advertised;
679 static void mlxsw_sx_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
680 struct ethtool_cmd *cmd)
682 u32 speed = SPEED_UNKNOWN;
683 u8 duplex = DUPLEX_UNKNOWN;
689 for (i = 0; i < MLXSW_SX_PORT_LINK_MODE_LEN; i++) {
690 if (ptys_eth_proto & mlxsw_sx_port_link_mode[i].mask) {
691 speed = mlxsw_sx_port_link_mode[i].speed;
692 duplex = DUPLEX_FULL;
697 ethtool_cmd_speed_set(cmd, speed);
698 cmd->duplex = duplex;
701 static u8 mlxsw_sx_port_connector_port(u32 ptys_eth_proto)
703 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
704 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
705 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
706 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
709 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
710 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
711 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
714 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
715 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
716 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
717 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
723 static int mlxsw_sx_port_get_settings(struct net_device *dev,
724 struct ethtool_cmd *cmd)
726 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
727 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
728 char ptys_pl[MLXSW_REG_PTYS_LEN];
734 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sx_port->local_port, 0);
735 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(ptys), ptys_pl);
737 netdev_err(dev, "Failed to get proto");
740 mlxsw_reg_ptys_unpack(ptys_pl, ð_proto_cap,
741 ð_proto_admin, ð_proto_oper);
743 cmd->supported = mlxsw_sx_from_ptys_supported_port(eth_proto_cap) |
744 mlxsw_sx_from_ptys_supported_link(eth_proto_cap) |
745 SUPPORTED_Pause | SUPPORTED_Asym_Pause;
746 cmd->advertising = mlxsw_sx_from_ptys_advert_link(eth_proto_admin);
747 mlxsw_sx_from_ptys_speed_duplex(netif_carrier_ok(dev),
748 eth_proto_oper, cmd);
750 eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
751 cmd->port = mlxsw_sx_port_connector_port(eth_proto_oper);
752 cmd->lp_advertising = mlxsw_sx_from_ptys_advert_link(eth_proto_oper);
754 cmd->transceiver = XCVR_INTERNAL;
758 static u32 mlxsw_sx_to_ptys_advert_link(u32 advertising)
763 for (i = 0; i < MLXSW_SX_PORT_LINK_MODE_LEN; i++) {
764 if (advertising & mlxsw_sx_port_link_mode[i].advertised)
765 ptys_proto |= mlxsw_sx_port_link_mode[i].mask;
770 static u32 mlxsw_sx_to_ptys_speed(u32 speed)
775 for (i = 0; i < MLXSW_SX_PORT_LINK_MODE_LEN; i++) {
776 if (speed == mlxsw_sx_port_link_mode[i].speed)
777 ptys_proto |= mlxsw_sx_port_link_mode[i].mask;
782 static int mlxsw_sx_port_set_settings(struct net_device *dev,
783 struct ethtool_cmd *cmd)
785 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
786 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
787 char ptys_pl[MLXSW_REG_PTYS_LEN];
795 speed = ethtool_cmd_speed(cmd);
797 eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
798 mlxsw_sx_to_ptys_advert_link(cmd->advertising) :
799 mlxsw_sx_to_ptys_speed(speed);
801 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sx_port->local_port, 0);
802 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(ptys), ptys_pl);
804 netdev_err(dev, "Failed to get proto");
807 mlxsw_reg_ptys_unpack(ptys_pl, ð_proto_cap, ð_proto_admin, NULL);
809 eth_proto_new = eth_proto_new & eth_proto_cap;
810 if (!eth_proto_new) {
811 netdev_err(dev, "Not supported proto admin requested");
814 if (eth_proto_new == eth_proto_admin)
817 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sx_port->local_port, eth_proto_new);
818 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(ptys), ptys_pl);
820 netdev_err(dev, "Failed to set proto admin");
824 err = mlxsw_sx_port_oper_status_get(mlxsw_sx_port, &is_up);
826 netdev_err(dev, "Failed to get oper status");
832 err = mlxsw_sx_port_admin_status_set(mlxsw_sx_port, false);
834 netdev_err(dev, "Failed to set admin status");
838 err = mlxsw_sx_port_admin_status_set(mlxsw_sx_port, true);
840 netdev_err(dev, "Failed to set admin status");
847 static const struct ethtool_ops mlxsw_sx_port_ethtool_ops = {
848 .get_drvinfo = mlxsw_sx_port_get_drvinfo,
849 .get_link = ethtool_op_get_link,
850 .get_strings = mlxsw_sx_port_get_strings,
851 .get_ethtool_stats = mlxsw_sx_port_get_stats,
852 .get_sset_count = mlxsw_sx_port_get_sset_count,
853 .get_settings = mlxsw_sx_port_get_settings,
854 .set_settings = mlxsw_sx_port_set_settings,
857 static int mlxsw_sx_port_attr_get(struct net_device *dev,
858 struct switchdev_attr *attr)
860 struct mlxsw_sx_port *mlxsw_sx_port = netdev_priv(dev);
861 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
864 case SWITCHDEV_ATTR_PORT_PARENT_ID:
865 attr->u.ppid.id_len = sizeof(mlxsw_sx->hw_id);
866 memcpy(&attr->u.ppid.id, &mlxsw_sx->hw_id, attr->u.ppid.id_len);
875 static const struct switchdev_ops mlxsw_sx_port_switchdev_ops = {
876 .switchdev_port_attr_get = mlxsw_sx_port_attr_get,
879 static int mlxsw_sx_hw_id_get(struct mlxsw_sx *mlxsw_sx)
881 char spad_pl[MLXSW_REG_SPAD_LEN];
884 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(spad), spad_pl);
887 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sx->hw_id);
891 static int mlxsw_sx_port_dev_addr_get(struct mlxsw_sx_port *mlxsw_sx_port)
893 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
894 struct net_device *dev = mlxsw_sx_port->dev;
895 char ppad_pl[MLXSW_REG_PPAD_LEN];
898 mlxsw_reg_ppad_pack(ppad_pl, false, 0);
899 err = mlxsw_reg_query(mlxsw_sx->core, MLXSW_REG(ppad), ppad_pl);
902 mlxsw_reg_ppad_mac_memcpy_from(ppad_pl, dev->dev_addr);
903 /* The last byte value in base mac address is guaranteed
904 * to be such it does not overflow when adding local_port
907 dev->dev_addr[ETH_ALEN - 1] += mlxsw_sx_port->local_port;
911 static int mlxsw_sx_port_stp_state_set(struct mlxsw_sx_port *mlxsw_sx_port,
912 u16 vid, enum mlxsw_reg_spms_state state)
914 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
918 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
921 mlxsw_reg_spms_pack(spms_pl, mlxsw_sx_port->local_port, vid, state);
922 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(spms), spms_pl);
927 static int mlxsw_sx_port_speed_set(struct mlxsw_sx_port *mlxsw_sx_port,
930 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
931 char ptys_pl[MLXSW_REG_PTYS_LEN];
933 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sx_port->local_port, speed);
934 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(ptys), ptys_pl);
938 mlxsw_sx_port_mac_learning_mode_set(struct mlxsw_sx_port *mlxsw_sx_port,
939 enum mlxsw_reg_spmlr_learn_mode mode)
941 struct mlxsw_sx *mlxsw_sx = mlxsw_sx_port->mlxsw_sx;
942 char spmlr_pl[MLXSW_REG_SPMLR_LEN];
944 mlxsw_reg_spmlr_pack(spmlr_pl, mlxsw_sx_port->local_port, mode);
945 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(spmlr), spmlr_pl);
948 static int mlxsw_sx_port_create(struct mlxsw_sx *mlxsw_sx, u8 local_port)
950 struct mlxsw_sx_port *mlxsw_sx_port;
951 struct net_device *dev;
955 dev = alloc_etherdev(sizeof(struct mlxsw_sx_port));
958 mlxsw_sx_port = netdev_priv(dev);
959 mlxsw_sx_port->dev = dev;
960 mlxsw_sx_port->mlxsw_sx = mlxsw_sx;
961 mlxsw_sx_port->local_port = local_port;
963 mlxsw_sx_port->pcpu_stats =
964 netdev_alloc_pcpu_stats(struct mlxsw_sx_port_pcpu_stats);
965 if (!mlxsw_sx_port->pcpu_stats) {
967 goto err_alloc_stats;
970 dev->netdev_ops = &mlxsw_sx_port_netdev_ops;
971 dev->ethtool_ops = &mlxsw_sx_port_ethtool_ops;
972 dev->switchdev_ops = &mlxsw_sx_port_switchdev_ops;
974 err = mlxsw_sx_port_dev_addr_get(mlxsw_sx_port);
976 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Unable to get port mac address\n",
977 mlxsw_sx_port->local_port);
978 goto err_dev_addr_get;
981 netif_carrier_off(dev);
983 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
984 NETIF_F_VLAN_CHALLENGED;
986 /* Each packet needs to have a Tx header (metadata) on top all other
989 dev->hard_header_len += MLXSW_TXHDR_LEN;
991 err = mlxsw_sx_port_module_check(mlxsw_sx_port, &usable);
993 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to check module\n",
994 mlxsw_sx_port->local_port);
995 goto err_port_module_check;
999 dev_dbg(mlxsw_sx->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1000 mlxsw_sx_port->local_port);
1001 goto port_not_usable;
1004 err = mlxsw_sx_port_swid_set(mlxsw_sx_port, 0);
1006 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to set SWID\n",
1007 mlxsw_sx_port->local_port);
1008 goto err_port_swid_set;
1011 err = mlxsw_sx_port_speed_set(mlxsw_sx_port,
1012 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4);
1014 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to set speed\n",
1015 mlxsw_sx_port->local_port);
1016 goto err_port_speed_set;
1019 err = mlxsw_sx_port_mtu_set(mlxsw_sx_port, ETH_DATA_LEN);
1021 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to set MTU\n",
1022 mlxsw_sx_port->local_port);
1023 goto err_port_mtu_set;
1026 err = mlxsw_sx_port_admin_status_set(mlxsw_sx_port, false);
1028 goto err_port_admin_status_set;
1030 err = mlxsw_sx_port_stp_state_set(mlxsw_sx_port,
1031 MLXSW_PORT_DEFAULT_VID,
1032 MLXSW_REG_SPMS_STATE_FORWARDING);
1034 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to set STP state\n",
1035 mlxsw_sx_port->local_port);
1036 goto err_port_stp_state_set;
1039 err = mlxsw_sx_port_mac_learning_mode_set(mlxsw_sx_port,
1040 MLXSW_REG_SPMLR_LEARN_MODE_DISABLE);
1042 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to set MAC learning mode\n",
1043 mlxsw_sx_port->local_port);
1044 goto err_port_mac_learning_mode_set;
1047 err = register_netdev(dev);
1049 dev_err(mlxsw_sx->bus_info->dev, "Port %d: Failed to register netdev\n",
1050 mlxsw_sx_port->local_port);
1051 goto err_register_netdev;
1054 mlxsw_sx->ports[local_port] = mlxsw_sx_port;
1057 err_register_netdev:
1058 err_port_admin_status_set:
1059 err_port_mac_learning_mode_set:
1060 err_port_stp_state_set:
1065 err_port_module_check:
1067 free_percpu(mlxsw_sx_port->pcpu_stats);
1073 static void mlxsw_sx_port_remove(struct mlxsw_sx *mlxsw_sx, u8 local_port)
1075 struct mlxsw_sx_port *mlxsw_sx_port = mlxsw_sx->ports[local_port];
1079 unregister_netdev(mlxsw_sx_port->dev); /* This calls ndo_stop */
1080 mlxsw_sx_port_swid_set(mlxsw_sx_port, MLXSW_PORT_SWID_DISABLED_PORT);
1081 free_percpu(mlxsw_sx_port->pcpu_stats);
1082 free_netdev(mlxsw_sx_port->dev);
1085 static void mlxsw_sx_ports_remove(struct mlxsw_sx *mlxsw_sx)
1089 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1090 mlxsw_sx_port_remove(mlxsw_sx, i);
1091 kfree(mlxsw_sx->ports);
1094 static int mlxsw_sx_ports_create(struct mlxsw_sx *mlxsw_sx)
1100 alloc_size = sizeof(struct mlxsw_sx_port *) * MLXSW_PORT_MAX_PORTS;
1101 mlxsw_sx->ports = kzalloc(alloc_size, GFP_KERNEL);
1102 if (!mlxsw_sx->ports)
1105 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1106 err = mlxsw_sx_port_create(mlxsw_sx, i);
1108 goto err_port_create;
1113 for (i--; i >= 1; i--)
1114 mlxsw_sx_port_remove(mlxsw_sx, i);
1115 kfree(mlxsw_sx->ports);
1119 static void mlxsw_sx_pude_event_func(const struct mlxsw_reg_info *reg,
1120 char *pude_pl, void *priv)
1122 struct mlxsw_sx *mlxsw_sx = priv;
1123 struct mlxsw_sx_port *mlxsw_sx_port;
1124 enum mlxsw_reg_pude_oper_status status;
1127 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1128 mlxsw_sx_port = mlxsw_sx->ports[local_port];
1129 if (!mlxsw_sx_port) {
1130 dev_warn(mlxsw_sx->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1135 status = mlxsw_reg_pude_oper_status_get(pude_pl);
1136 if (MLXSW_PORT_OPER_STATUS_UP == status) {
1137 netdev_info(mlxsw_sx_port->dev, "link up\n");
1138 netif_carrier_on(mlxsw_sx_port->dev);
1140 netdev_info(mlxsw_sx_port->dev, "link down\n");
1141 netif_carrier_off(mlxsw_sx_port->dev);
1145 static struct mlxsw_event_listener mlxsw_sx_pude_event = {
1146 .func = mlxsw_sx_pude_event_func,
1147 .trap_id = MLXSW_TRAP_ID_PUDE,
1150 static int mlxsw_sx_event_register(struct mlxsw_sx *mlxsw_sx,
1151 enum mlxsw_event_trap_id trap_id)
1153 struct mlxsw_event_listener *el;
1154 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1158 case MLXSW_TRAP_ID_PUDE:
1159 el = &mlxsw_sx_pude_event;
1162 err = mlxsw_core_event_listener_register(mlxsw_sx->core, el, mlxsw_sx);
1166 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1167 MLXSW_REG_HTGT_TRAP_GROUP_EMAD, trap_id);
1168 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(hpkt), hpkt_pl);
1170 goto err_event_trap_set;
1175 mlxsw_core_event_listener_unregister(mlxsw_sx->core, el, mlxsw_sx);
1179 static void mlxsw_sx_event_unregister(struct mlxsw_sx *mlxsw_sx,
1180 enum mlxsw_event_trap_id trap_id)
1182 struct mlxsw_event_listener *el;
1185 case MLXSW_TRAP_ID_PUDE:
1186 el = &mlxsw_sx_pude_event;
1189 mlxsw_core_event_listener_unregister(mlxsw_sx->core, el, mlxsw_sx);
1192 static void mlxsw_sx_rx_listener_func(struct sk_buff *skb, u8 local_port,
1195 struct mlxsw_sx *mlxsw_sx = priv;
1196 struct mlxsw_sx_port *mlxsw_sx_port = mlxsw_sx->ports[local_port];
1197 struct mlxsw_sx_port_pcpu_stats *pcpu_stats;
1199 if (unlikely(!mlxsw_sx_port)) {
1200 if (net_ratelimit())
1201 dev_warn(mlxsw_sx->bus_info->dev, "Port %d: skb received for non-existent port\n",
1206 skb->dev = mlxsw_sx_port->dev;
1208 pcpu_stats = this_cpu_ptr(mlxsw_sx_port->pcpu_stats);
1209 u64_stats_update_begin(&pcpu_stats->syncp);
1210 pcpu_stats->rx_packets++;
1211 pcpu_stats->rx_bytes += skb->len;
1212 u64_stats_update_end(&pcpu_stats->syncp);
1214 skb->protocol = eth_type_trans(skb, skb->dev);
1215 netif_receive_skb(skb);
1218 static const struct mlxsw_rx_listener mlxsw_sx_rx_listener[] = {
1220 .func = mlxsw_sx_rx_listener_func,
1221 .local_port = MLXSW_PORT_DONT_CARE,
1222 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1224 /* Traps for specific L2 packet types, not trapped as FDB MC */
1226 .func = mlxsw_sx_rx_listener_func,
1227 .local_port = MLXSW_PORT_DONT_CARE,
1228 .trap_id = MLXSW_TRAP_ID_STP,
1231 .func = mlxsw_sx_rx_listener_func,
1232 .local_port = MLXSW_PORT_DONT_CARE,
1233 .trap_id = MLXSW_TRAP_ID_LACP,
1236 .func = mlxsw_sx_rx_listener_func,
1237 .local_port = MLXSW_PORT_DONT_CARE,
1238 .trap_id = MLXSW_TRAP_ID_EAPOL,
1241 .func = mlxsw_sx_rx_listener_func,
1242 .local_port = MLXSW_PORT_DONT_CARE,
1243 .trap_id = MLXSW_TRAP_ID_LLDP,
1246 .func = mlxsw_sx_rx_listener_func,
1247 .local_port = MLXSW_PORT_DONT_CARE,
1248 .trap_id = MLXSW_TRAP_ID_MMRP,
1251 .func = mlxsw_sx_rx_listener_func,
1252 .local_port = MLXSW_PORT_DONT_CARE,
1253 .trap_id = MLXSW_TRAP_ID_MVRP,
1256 .func = mlxsw_sx_rx_listener_func,
1257 .local_port = MLXSW_PORT_DONT_CARE,
1258 .trap_id = MLXSW_TRAP_ID_RPVST,
1261 .func = mlxsw_sx_rx_listener_func,
1262 .local_port = MLXSW_PORT_DONT_CARE,
1263 .trap_id = MLXSW_TRAP_ID_DHCP,
1266 .func = mlxsw_sx_rx_listener_func,
1267 .local_port = MLXSW_PORT_DONT_CARE,
1268 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1271 .func = mlxsw_sx_rx_listener_func,
1272 .local_port = MLXSW_PORT_DONT_CARE,
1273 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1276 .func = mlxsw_sx_rx_listener_func,
1277 .local_port = MLXSW_PORT_DONT_CARE,
1278 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1281 .func = mlxsw_sx_rx_listener_func,
1282 .local_port = MLXSW_PORT_DONT_CARE,
1283 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1286 .func = mlxsw_sx_rx_listener_func,
1287 .local_port = MLXSW_PORT_DONT_CARE,
1288 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1292 static int mlxsw_sx_traps_init(struct mlxsw_sx *mlxsw_sx)
1294 char htgt_pl[MLXSW_REG_HTGT_LEN];
1295 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1299 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1300 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(htgt), htgt_pl);
1304 for (i = 0; i < ARRAY_SIZE(mlxsw_sx_rx_listener); i++) {
1305 err = mlxsw_core_rx_listener_register(mlxsw_sx->core,
1306 &mlxsw_sx_rx_listener[i],
1309 goto err_rx_listener_register;
1311 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1312 MLXSW_REG_HTGT_TRAP_GROUP_RX,
1313 mlxsw_sx_rx_listener[i].trap_id);
1314 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(hpkt), hpkt_pl);
1316 goto err_rx_trap_set;
1321 mlxsw_core_rx_listener_unregister(mlxsw_sx->core,
1322 &mlxsw_sx_rx_listener[i],
1324 err_rx_listener_register:
1325 for (i--; i >= 0; i--) {
1326 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1327 MLXSW_REG_HTGT_TRAP_GROUP_RX,
1328 mlxsw_sx_rx_listener[i].trap_id);
1329 mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(hpkt), hpkt_pl);
1331 mlxsw_core_rx_listener_unregister(mlxsw_sx->core,
1332 &mlxsw_sx_rx_listener[i],
1338 static void mlxsw_sx_traps_fini(struct mlxsw_sx *mlxsw_sx)
1340 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1343 for (i = 0; i < ARRAY_SIZE(mlxsw_sx_rx_listener); i++) {
1344 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1345 MLXSW_REG_HTGT_TRAP_GROUP_RX,
1346 mlxsw_sx_rx_listener[i].trap_id);
1347 mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(hpkt), hpkt_pl);
1349 mlxsw_core_rx_listener_unregister(mlxsw_sx->core,
1350 &mlxsw_sx_rx_listener[i],
1355 static int mlxsw_sx_flood_init(struct mlxsw_sx *mlxsw_sx)
1357 char sfgc_pl[MLXSW_REG_SFGC_LEN];
1358 char sgcr_pl[MLXSW_REG_SGCR_LEN];
1363 /* Due to FW bug, we must configure SMID. */
1364 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
1367 mlxsw_reg_smid_pack(smid_pl, MLXSW_PORT_MID);
1368 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(smid), smid_pl);
1373 /* Configure a flooding table, which includes only CPU port. */
1374 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
1377 mlxsw_reg_sftr_pack(sftr_pl, 0, 0, MLXSW_REG_SFGC_TABLE_TYPE_SINGLE, 0);
1378 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sftr), sftr_pl);
1383 /* Flood different packet types using the flooding table. */
1384 mlxsw_reg_sfgc_pack(sfgc_pl,
1385 MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST,
1386 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID,
1387 MLXSW_REG_SFGC_TABLE_TYPE_SINGLE,
1389 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sfgc), sfgc_pl);
1393 mlxsw_reg_sfgc_pack(sfgc_pl,
1394 MLXSW_REG_SFGC_TYPE_BROADCAST,
1395 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID,
1396 MLXSW_REG_SFGC_TABLE_TYPE_SINGLE,
1398 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sfgc), sfgc_pl);
1402 mlxsw_reg_sfgc_pack(sfgc_pl,
1403 MLXSW_REG_SFGC_TYPE_UNREGISTERED_MULTICAST_NON_IP,
1404 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID,
1405 MLXSW_REG_SFGC_TABLE_TYPE_SINGLE,
1407 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sfgc), sfgc_pl);
1411 mlxsw_reg_sfgc_pack(sfgc_pl,
1412 MLXSW_REG_SFGC_TYPE_UNREGISTERED_MULTICAST_IPV6,
1413 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID,
1414 MLXSW_REG_SFGC_TABLE_TYPE_SINGLE,
1416 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sfgc), sfgc_pl);
1420 mlxsw_reg_sfgc_pack(sfgc_pl,
1421 MLXSW_REG_SFGC_TYPE_UNREGISTERED_MULTICAST_IPV4,
1422 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID,
1423 MLXSW_REG_SFGC_TABLE_TYPE_SINGLE,
1425 err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sfgc), sfgc_pl);
1429 mlxsw_reg_sgcr_pack(sgcr_pl, true);
1430 return mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(sgcr), sgcr_pl);
1433 static int mlxsw_sx_init(void *priv, struct mlxsw_core *mlxsw_core,
1434 const struct mlxsw_bus_info *mlxsw_bus_info)
1436 struct mlxsw_sx *mlxsw_sx = priv;
1439 mlxsw_sx->core = mlxsw_core;
1440 mlxsw_sx->bus_info = mlxsw_bus_info;
1442 err = mlxsw_sx_hw_id_get(mlxsw_sx);
1444 dev_err(mlxsw_sx->bus_info->dev, "Failed to get switch HW ID\n");
1448 err = mlxsw_sx_ports_create(mlxsw_sx);
1450 dev_err(mlxsw_sx->bus_info->dev, "Failed to create ports\n");
1454 err = mlxsw_sx_event_register(mlxsw_sx, MLXSW_TRAP_ID_PUDE);
1456 dev_err(mlxsw_sx->bus_info->dev, "Failed to register for PUDE events\n");
1457 goto err_event_register;
1460 err = mlxsw_sx_traps_init(mlxsw_sx);
1462 dev_err(mlxsw_sx->bus_info->dev, "Failed to set traps for RX\n");
1463 goto err_rx_listener_register;
1466 err = mlxsw_sx_flood_init(mlxsw_sx);
1468 dev_err(mlxsw_sx->bus_info->dev, "Failed to initialize flood tables\n");
1469 goto err_flood_init;
1475 mlxsw_sx_traps_fini(mlxsw_sx);
1476 err_rx_listener_register:
1477 mlxsw_sx_event_unregister(mlxsw_sx, MLXSW_TRAP_ID_PUDE);
1479 mlxsw_sx_ports_remove(mlxsw_sx);
1483 static void mlxsw_sx_fini(void *priv)
1485 struct mlxsw_sx *mlxsw_sx = priv;
1487 mlxsw_sx_traps_fini(mlxsw_sx);
1488 mlxsw_sx_event_unregister(mlxsw_sx, MLXSW_TRAP_ID_PUDE);
1489 mlxsw_sx_ports_remove(mlxsw_sx);
1492 static struct mlxsw_config_profile mlxsw_sx_config_profile = {
1493 .used_max_vepa_channels = 1,
1494 .max_vepa_channels = 0,
1497 .used_max_port_per_lag = 1,
1498 .max_port_per_lag = 16,
1503 .used_max_system_port = 1,
1504 .max_system_port = 48000,
1505 .used_max_vlan_groups = 1,
1506 .max_vlan_groups = 127,
1507 .used_max_regions = 1,
1509 .used_flood_tables = 1,
1510 .max_flood_tables = 2,
1511 .max_vid_flood_tables = 1,
1512 .used_flood_mode = 1,
1514 .used_max_ib_mc = 1,
1521 .type = MLXSW_PORT_SWID_TYPE_ETH,
1526 static struct mlxsw_driver mlxsw_sx_driver = {
1527 .kind = MLXSW_DEVICE_KIND_SWITCHX2,
1528 .owner = THIS_MODULE,
1529 .priv_size = sizeof(struct mlxsw_sx),
1530 .init = mlxsw_sx_init,
1531 .fini = mlxsw_sx_fini,
1532 .txhdr_construct = mlxsw_sx_txhdr_construct,
1533 .txhdr_len = MLXSW_TXHDR_LEN,
1534 .profile = &mlxsw_sx_config_profile,
1537 static int __init mlxsw_sx_module_init(void)
1539 return mlxsw_core_driver_register(&mlxsw_sx_driver);
1542 static void __exit mlxsw_sx_module_exit(void)
1544 mlxsw_core_driver_unregister(&mlxsw_sx_driver);
1547 module_init(mlxsw_sx_module_init);
1548 module_exit(mlxsw_sx_module_exit);
1550 MODULE_LICENSE("Dual BSD/GPL");
1551 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
1552 MODULE_DESCRIPTION("Mellanox SwitchX-2 driver");
1553 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SWITCHX2);