1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2018, Sensor-Technik Wiedemann GmbH
3 * Copyright (c) 2018-2019, Vladimir Oltean <olteanv@gmail.com>
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8 #include <linux/delay.h>
9 #include <linux/module.h>
10 #include <linux/printk.h>
11 #include <linux/spi/spi.h>
12 #include <linux/errno.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/phylink.h>
16 #include <linux/of_net.h>
17 #include <linux/of_mdio.h>
18 #include <linux/of_device.h>
19 #include <linux/pcs/pcs-xpcs.h>
20 #include <linux/netdev_features.h>
21 #include <linux/netdevice.h>
22 #include <linux/if_bridge.h>
23 #include <linux/if_ether.h>
24 #include <linux/dsa/8021q.h>
26 #include "sja1105_tas.h"
28 #define SJA1105_UNKNOWN_MULTICAST 0x010000000000ull
30 /* Configure the optional reset pin and bring up switch */
31 static int sja1105_hw_reset(struct device *dev, unsigned int pulse_len,
32 unsigned int startup_delay)
34 struct gpio_desc *gpio;
36 gpio = gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
43 gpiod_set_value_cansleep(gpio, 1);
44 /* Wait for minimum reset pulse length */
46 gpiod_set_value_cansleep(gpio, 0);
47 /* Wait until chip is ready after reset */
48 msleep(startup_delay);
56 sja1105_port_allow_traffic(struct sja1105_l2_forwarding_entry *l2_fwd,
57 int from, int to, bool allow)
60 l2_fwd[from].reach_port |= BIT(to);
62 l2_fwd[from].reach_port &= ~BIT(to);
65 static bool sja1105_can_forward(struct sja1105_l2_forwarding_entry *l2_fwd,
68 return !!(l2_fwd[from].reach_port & BIT(to));
71 static int sja1105_is_vlan_configured(struct sja1105_private *priv, u16 vid)
73 struct sja1105_vlan_lookup_entry *vlan;
76 vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries;
77 count = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entry_count;
79 for (i = 0; i < count; i++)
80 if (vlan[i].vlanid == vid)
83 /* Return an invalid entry index if not found */
87 static int sja1105_drop_untagged(struct dsa_switch *ds, int port, bool drop)
89 struct sja1105_private *priv = ds->priv;
90 struct sja1105_mac_config_entry *mac;
92 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
94 if (mac[port].drpuntag == drop)
97 mac[port].drpuntag = drop;
99 return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
103 static int sja1105_pvid_apply(struct sja1105_private *priv, int port, u16 pvid)
105 struct sja1105_mac_config_entry *mac;
107 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
109 if (mac[port].vlanid == pvid)
112 mac[port].vlanid = pvid;
114 return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
118 static int sja1105_commit_pvid(struct dsa_switch *ds, int port)
120 struct dsa_port *dp = dsa_to_port(ds, port);
121 struct net_device *br = dsa_port_bridge_dev_get(dp);
122 struct sja1105_private *priv = ds->priv;
123 struct sja1105_vlan_lookup_entry *vlan;
124 bool drop_untagged = false;
128 if (br && br_vlan_enabled(br))
129 pvid = priv->bridge_pvid[port];
131 pvid = priv->tag_8021q_pvid[port];
133 rc = sja1105_pvid_apply(priv, port, pvid);
137 /* Only force dropping of untagged packets when the port is under a
138 * VLAN-aware bridge. When the tag_8021q pvid is used, we are
139 * deliberately removing the RX VLAN from the port's VMEMB_PORT list,
140 * to prevent DSA tag spoofing from the link partner. Untagged packets
141 * are the only ones that should be received with tag_8021q, so
142 * definitely don't drop them.
144 if (pvid == priv->bridge_pvid[port]) {
145 vlan = priv->static_config.tables[BLK_IDX_VLAN_LOOKUP].entries;
147 match = sja1105_is_vlan_configured(priv, pvid);
149 if (match < 0 || !(vlan[match].vmemb_port & BIT(port)))
150 drop_untagged = true;
153 if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
154 drop_untagged = true;
156 return sja1105_drop_untagged(ds, port, drop_untagged);
159 static int sja1105_init_mac_settings(struct sja1105_private *priv)
161 struct sja1105_mac_config_entry default_mac = {
162 /* Enable all 8 priority queues on egress.
163 * Every queue i holds top[i] - base[i] frames.
164 * Sum of top[i] - base[i] is 511 (max hardware limit).
166 .top = {0x3F, 0x7F, 0xBF, 0xFF, 0x13F, 0x17F, 0x1BF, 0x1FF},
167 .base = {0x0, 0x40, 0x80, 0xC0, 0x100, 0x140, 0x180, 0x1C0},
168 .enabled = {true, true, true, true, true, true, true, true},
169 /* Keep standard IFG of 12 bytes on egress. */
171 /* Always put the MAC speed in automatic mode, where it can be
172 * adjusted at runtime by PHYLINK.
174 .speed = priv->info->port_speed[SJA1105_SPEED_AUTO],
175 /* No static correction for 1-step 1588 events */
178 /* Disable aging for critical TTEthernet traffic */
180 /* Internal VLAN (pvid) to apply to untagged ingress */
185 /* Don't drop traffic with other EtherType than ETH_P_IP */
187 /* Don't drop double-tagged traffic */
189 /* Don't drop untagged traffic */
191 /* Don't retag 802.1p (VID 0) traffic with the pvid */
193 /* Disable learning and I/O on user ports by default -
194 * STP will enable it.
200 struct sja1105_mac_config_entry *mac;
201 struct dsa_switch *ds = priv->ds;
202 struct sja1105_table *table;
205 table = &priv->static_config.tables[BLK_IDX_MAC_CONFIG];
207 /* Discard previous MAC Configuration Table */
208 if (table->entry_count) {
209 kfree(table->entries);
210 table->entry_count = 0;
213 table->entries = kcalloc(table->ops->max_entry_count,
214 table->ops->unpacked_entry_size, GFP_KERNEL);
218 table->entry_count = table->ops->max_entry_count;
220 mac = table->entries;
222 list_for_each_entry(dp, &ds->dst->ports, list) {
226 mac[dp->index] = default_mac;
228 /* Let sja1105_bridge_stp_state_set() keep address learning
229 * enabled for the DSA ports. CPU ports use software-assisted
230 * learning to ensure that only FDB entries belonging to the
231 * bridge are learned, and that they are learned towards all
232 * CPU ports in a cross-chip topology if multiple CPU ports
235 if (dsa_port_is_dsa(dp))
238 /* Disallow untagged packets from being received on the
241 if (dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp))
242 mac[dp->index].drpuntag = true;
248 static int sja1105_init_mii_settings(struct sja1105_private *priv)
250 struct device *dev = &priv->spidev->dev;
251 struct sja1105_xmii_params_entry *mii;
252 struct dsa_switch *ds = priv->ds;
253 struct sja1105_table *table;
256 table = &priv->static_config.tables[BLK_IDX_XMII_PARAMS];
258 /* Discard previous xMII Mode Parameters Table */
259 if (table->entry_count) {
260 kfree(table->entries);
261 table->entry_count = 0;
264 table->entries = kcalloc(table->ops->max_entry_count,
265 table->ops->unpacked_entry_size, GFP_KERNEL);
269 /* Override table based on PHYLINK DT bindings */
270 table->entry_count = table->ops->max_entry_count;
272 mii = table->entries;
274 for (i = 0; i < ds->num_ports; i++) {
275 sja1105_mii_role_t role = XMII_MAC;
277 if (dsa_is_unused_port(priv->ds, i))
280 switch (priv->phy_mode[i]) {
281 case PHY_INTERFACE_MODE_INTERNAL:
282 if (priv->info->internal_phy[i] == SJA1105_NO_PHY)
285 mii->xmii_mode[i] = XMII_MODE_MII;
286 if (priv->info->internal_phy[i] == SJA1105_PHY_BASE_TX)
287 mii->special[i] = true;
290 case PHY_INTERFACE_MODE_REVMII:
293 case PHY_INTERFACE_MODE_MII:
294 if (!priv->info->supports_mii[i])
297 mii->xmii_mode[i] = XMII_MODE_MII;
299 case PHY_INTERFACE_MODE_REVRMII:
302 case PHY_INTERFACE_MODE_RMII:
303 if (!priv->info->supports_rmii[i])
306 mii->xmii_mode[i] = XMII_MODE_RMII;
308 case PHY_INTERFACE_MODE_RGMII:
309 case PHY_INTERFACE_MODE_RGMII_ID:
310 case PHY_INTERFACE_MODE_RGMII_RXID:
311 case PHY_INTERFACE_MODE_RGMII_TXID:
312 if (!priv->info->supports_rgmii[i])
315 mii->xmii_mode[i] = XMII_MODE_RGMII;
317 case PHY_INTERFACE_MODE_SGMII:
318 if (!priv->info->supports_sgmii[i])
321 mii->xmii_mode[i] = XMII_MODE_SGMII;
322 mii->special[i] = true;
324 case PHY_INTERFACE_MODE_2500BASEX:
325 if (!priv->info->supports_2500basex[i])
328 mii->xmii_mode[i] = XMII_MODE_SGMII;
329 mii->special[i] = true;
333 dev_err(dev, "Unsupported PHY mode %s on port %d!\n",
334 phy_modes(priv->phy_mode[i]), i);
338 mii->phy_mac[i] = role;
343 static int sja1105_init_static_fdb(struct sja1105_private *priv)
345 struct sja1105_l2_lookup_entry *l2_lookup;
346 struct sja1105_table *table;
349 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP];
351 /* We only populate the FDB table through dynamic L2 Address Lookup
352 * entries, except for a special entry at the end which is a catch-all
353 * for unknown multicast and will be used to control flooding domain.
355 if (table->entry_count) {
356 kfree(table->entries);
357 table->entry_count = 0;
360 if (!priv->info->can_limit_mcast_flood)
363 table->entries = kcalloc(1, table->ops->unpacked_entry_size,
368 table->entry_count = 1;
369 l2_lookup = table->entries;
371 /* All L2 multicast addresses have an odd first octet */
372 l2_lookup[0].macaddr = SJA1105_UNKNOWN_MULTICAST;
373 l2_lookup[0].mask_macaddr = SJA1105_UNKNOWN_MULTICAST;
374 l2_lookup[0].lockeds = true;
375 l2_lookup[0].index = SJA1105_MAX_L2_LOOKUP_COUNT - 1;
377 /* Flood multicast to every port by default */
378 for (port = 0; port < priv->ds->num_ports; port++)
379 if (!dsa_is_unused_port(priv->ds, port))
380 l2_lookup[0].destports |= BIT(port);
385 static int sja1105_init_l2_lookup_params(struct sja1105_private *priv)
387 struct sja1105_l2_lookup_params_entry default_l2_lookup_params = {
388 /* Learned FDB entries are forgotten after 300 seconds */
389 .maxage = SJA1105_AGEING_TIME_MS(300000),
390 /* All entries within a FDB bin are available for learning */
391 .dyn_tbsz = SJA1105ET_FDB_BIN_SIZE,
392 /* And the P/Q/R/S equivalent setting: */
394 /* 2^8 + 2^5 + 2^3 + 2^2 + 2^1 + 1 in Koopman notation */
396 /* This selects between Independent VLAN Learning (IVL) and
397 * Shared VLAN Learning (SVL)
399 .shared_learn = true,
400 /* Don't discard management traffic based on ENFPORT -
401 * we don't perform SMAC port enforcement anyway, so
402 * what we are setting here doesn't matter.
404 .no_enf_hostprt = false,
405 /* Don't learn SMAC for mac_fltres1 and mac_fltres0.
406 * Maybe correlate with no_linklocal_learn from bridge driver?
408 .no_mgmt_learn = true,
411 /* Dynamically learned FDB entries can overwrite other (older)
412 * dynamic FDB entries
417 struct dsa_switch *ds = priv->ds;
418 int port, num_used_ports = 0;
419 struct sja1105_table *table;
422 for (port = 0; port < ds->num_ports; port++)
423 if (!dsa_is_unused_port(ds, port))
426 max_fdb_entries = SJA1105_MAX_L2_LOOKUP_COUNT / num_used_ports;
428 for (port = 0; port < ds->num_ports; port++) {
429 if (dsa_is_unused_port(ds, port))
432 default_l2_lookup_params.maxaddrp[port] = max_fdb_entries;
435 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
437 if (table->entry_count) {
438 kfree(table->entries);
439 table->entry_count = 0;
442 table->entries = kcalloc(table->ops->max_entry_count,
443 table->ops->unpacked_entry_size, GFP_KERNEL);
447 table->entry_count = table->ops->max_entry_count;
449 /* This table only has a single entry */
450 ((struct sja1105_l2_lookup_params_entry *)table->entries)[0] =
451 default_l2_lookup_params;
456 /* Set up a default VLAN for untagged traffic injected from the CPU
457 * using management routes (e.g. STP, PTP) as opposed to tag_8021q.
458 * All DT-defined ports are members of this VLAN, and there are no
459 * restrictions on forwarding (since the CPU selects the destination).
460 * Frames from this VLAN will always be transmitted as untagged, and
461 * neither the bridge nor the 8021q module cannot create this VLAN ID.
463 static int sja1105_init_static_vlan(struct sja1105_private *priv)
465 struct sja1105_table *table;
466 struct sja1105_vlan_lookup_entry pvid = {
467 .type_entry = SJA1110_VLAN_D_TAG,
473 .vlanid = SJA1105_DEFAULT_VLAN,
475 struct dsa_switch *ds = priv->ds;
478 table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
480 if (table->entry_count) {
481 kfree(table->entries);
482 table->entry_count = 0;
485 table->entries = kzalloc(table->ops->unpacked_entry_size,
490 table->entry_count = 1;
492 for (port = 0; port < ds->num_ports; port++) {
493 if (dsa_is_unused_port(ds, port))
496 pvid.vmemb_port |= BIT(port);
497 pvid.vlan_bc |= BIT(port);
498 pvid.tag_port &= ~BIT(port);
500 if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)) {
501 priv->tag_8021q_pvid[port] = SJA1105_DEFAULT_VLAN;
502 priv->bridge_pvid[port] = SJA1105_DEFAULT_VLAN;
506 ((struct sja1105_vlan_lookup_entry *)table->entries)[0] = pvid;
510 static int sja1105_init_l2_forwarding(struct sja1105_private *priv)
512 struct sja1105_l2_forwarding_entry *l2fwd;
513 struct dsa_switch *ds = priv->ds;
514 struct dsa_switch_tree *dst;
515 struct sja1105_table *table;
520 table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING];
522 if (table->entry_count) {
523 kfree(table->entries);
524 table->entry_count = 0;
527 table->entries = kcalloc(table->ops->max_entry_count,
528 table->ops->unpacked_entry_size, GFP_KERNEL);
532 table->entry_count = table->ops->max_entry_count;
534 l2fwd = table->entries;
536 /* First 5 entries in the L2 Forwarding Table define the forwarding
537 * rules and the VLAN PCP to ingress queue mapping.
538 * Set up the ingress queue mapping first.
540 for (port = 0; port < ds->num_ports; port++) {
541 if (dsa_is_unused_port(ds, port))
544 for (tc = 0; tc < SJA1105_NUM_TC; tc++)
545 l2fwd[port].vlan_pmap[tc] = tc;
548 /* Then manage the forwarding domain for user ports. These can forward
549 * only to the always-on domain (CPU port and DSA links)
551 for (from = 0; from < ds->num_ports; from++) {
552 if (!dsa_is_user_port(ds, from))
555 for (to = 0; to < ds->num_ports; to++) {
556 if (!dsa_is_cpu_port(ds, to) &&
557 !dsa_is_dsa_port(ds, to))
560 l2fwd[from].bc_domain |= BIT(to);
561 l2fwd[from].fl_domain |= BIT(to);
563 sja1105_port_allow_traffic(l2fwd, from, to, true);
567 /* Then manage the forwarding domain for DSA links and CPU ports (the
568 * always-on domain). These can send packets to any enabled port except
571 for (from = 0; from < ds->num_ports; from++) {
572 if (!dsa_is_cpu_port(ds, from) && !dsa_is_dsa_port(ds, from))
575 for (to = 0; to < ds->num_ports; to++) {
576 if (dsa_is_unused_port(ds, to))
582 l2fwd[from].bc_domain |= BIT(to);
583 l2fwd[from].fl_domain |= BIT(to);
585 sja1105_port_allow_traffic(l2fwd, from, to, true);
589 /* In odd topologies ("H" connections where there is a DSA link to
590 * another switch which also has its own CPU port), TX packets can loop
591 * back into the system (they are flooded from CPU port 1 to the DSA
592 * link, and from there to CPU port 2). Prevent this from happening by
593 * cutting RX from DSA links towards our CPU port, if the remote switch
594 * has its own CPU port and therefore doesn't need ours for network
599 list_for_each_entry(dl, &dst->rtable, list) {
600 if (dl->dp->ds != ds || dl->link_dp->cpu_dp == dl->dp->cpu_dp)
603 from = dl->dp->index;
604 to = dsa_upstream_port(ds, from);
607 "H topology detected, cutting RX from DSA link %d to CPU port %d to prevent TX packet loops\n",
610 sja1105_port_allow_traffic(l2fwd, from, to, false);
612 l2fwd[from].bc_domain &= ~BIT(to);
613 l2fwd[from].fl_domain &= ~BIT(to);
616 /* Finally, manage the egress flooding domain. All ports start up with
617 * flooding enabled, including the CPU port and DSA links.
619 for (port = 0; port < ds->num_ports; port++) {
620 if (dsa_is_unused_port(ds, port))
623 priv->ucast_egress_floods |= BIT(port);
624 priv->bcast_egress_floods |= BIT(port);
627 /* Next 8 entries define VLAN PCP mapping from ingress to egress.
628 * Create a one-to-one mapping.
630 for (tc = 0; tc < SJA1105_NUM_TC; tc++) {
631 for (port = 0; port < ds->num_ports; port++) {
632 if (dsa_is_unused_port(ds, port))
635 l2fwd[ds->num_ports + tc].vlan_pmap[port] = tc;
638 l2fwd[ds->num_ports + tc].type_egrpcp2outputq = true;
644 static int sja1110_init_pcp_remapping(struct sja1105_private *priv)
646 struct sja1110_pcp_remapping_entry *pcp_remap;
647 struct dsa_switch *ds = priv->ds;
648 struct sja1105_table *table;
651 table = &priv->static_config.tables[BLK_IDX_PCP_REMAPPING];
653 /* Nothing to do for SJA1105 */
654 if (!table->ops->max_entry_count)
657 if (table->entry_count) {
658 kfree(table->entries);
659 table->entry_count = 0;
662 table->entries = kcalloc(table->ops->max_entry_count,
663 table->ops->unpacked_entry_size, GFP_KERNEL);
667 table->entry_count = table->ops->max_entry_count;
669 pcp_remap = table->entries;
671 /* Repeat the configuration done for vlan_pmap */
672 for (port = 0; port < ds->num_ports; port++) {
673 if (dsa_is_unused_port(ds, port))
676 for (tc = 0; tc < SJA1105_NUM_TC; tc++)
677 pcp_remap[port].egrpcp[tc] = tc;
683 static int sja1105_init_l2_forwarding_params(struct sja1105_private *priv)
685 struct sja1105_l2_forwarding_params_entry *l2fwd_params;
686 struct sja1105_table *table;
688 table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING_PARAMS];
690 if (table->entry_count) {
691 kfree(table->entries);
692 table->entry_count = 0;
695 table->entries = kcalloc(table->ops->max_entry_count,
696 table->ops->unpacked_entry_size, GFP_KERNEL);
700 table->entry_count = table->ops->max_entry_count;
702 /* This table only has a single entry */
703 l2fwd_params = table->entries;
705 /* Disallow dynamic reconfiguration of vlan_pmap */
706 l2fwd_params->max_dynp = 0;
707 /* Use a single memory partition for all ingress queues */
708 l2fwd_params->part_spc[0] = priv->info->max_frame_mem;
713 void sja1105_frame_memory_partitioning(struct sja1105_private *priv)
715 struct sja1105_l2_forwarding_params_entry *l2_fwd_params;
716 struct sja1105_vl_forwarding_params_entry *vl_fwd_params;
717 struct sja1105_table *table;
719 table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING_PARAMS];
720 l2_fwd_params = table->entries;
721 l2_fwd_params->part_spc[0] = SJA1105_MAX_FRAME_MEMORY;
723 /* If we have any critical-traffic virtual links, we need to reserve
724 * some frame buffer memory for them. At the moment, hardcode the value
725 * at 100 blocks of 128 bytes of memory each. This leaves 829 blocks
726 * remaining for best-effort traffic. TODO: figure out a more flexible
727 * way to perform the frame buffer partitioning.
729 if (!priv->static_config.tables[BLK_IDX_VL_FORWARDING].entry_count)
732 table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS];
733 vl_fwd_params = table->entries;
735 l2_fwd_params->part_spc[0] -= SJA1105_VL_FRAME_MEMORY;
736 vl_fwd_params->partspc[0] = SJA1105_VL_FRAME_MEMORY;
739 /* SJA1110 TDMACONFIGIDX values:
741 * | 100 Mbps ports | 1Gbps ports | 2.5Gbps ports | Disabled ports
742 * -----+----------------+---------------+---------------+---------------
743 * 0 | 0, [5:10] | [1:2] | [3:4] | retag
744 * 1 |0, [5:10], retag| [1:2] | [3:4] | -
745 * 2 | 0, [5:10] | [1:3], retag | 4 | -
746 * 3 | 0, [5:10] |[1:2], 4, retag| 3 | -
747 * 4 | 0, 2, [5:10] | 1, retag | [3:4] | -
748 * 5 | 0, 1, [5:10] | 2, retag | [3:4] | -
749 * 14 | 0, [5:10] | [1:4], retag | - | -
750 * 15 | [5:10] | [0:4], retag | - | -
752 static void sja1110_select_tdmaconfigidx(struct sja1105_private *priv)
754 struct sja1105_general_params_entry *general_params;
755 struct sja1105_table *table;
756 bool port_1_is_base_tx;
761 if (priv->info->device_id != SJA1110_DEVICE_ID)
764 table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
765 general_params = table->entries;
767 /* All the settings below are "as opposed to SGMII", which is the
768 * other pinmuxing option.
770 port_1_is_base_tx = priv->phy_mode[1] == PHY_INTERFACE_MODE_INTERNAL;
771 port_3_is_2500 = priv->phy_mode[3] == PHY_INTERFACE_MODE_2500BASEX;
772 port_4_is_2500 = priv->phy_mode[4] == PHY_INTERFACE_MODE_2500BASEX;
774 if (port_1_is_base_tx)
775 /* Retagging port will operate at 1 Gbps */
777 else if (port_3_is_2500 && port_4_is_2500)
778 /* Retagging port will operate at 100 Mbps */
780 else if (port_3_is_2500)
781 /* Retagging port will operate at 1 Gbps */
783 else if (port_4_is_2500)
784 /* Retagging port will operate at 1 Gbps */
787 /* Retagging port will operate at 1 Gbps */
790 general_params->tdmaconfigidx = tdmaconfigidx;
793 static int sja1105_init_topology(struct sja1105_private *priv,
794 struct sja1105_general_params_entry *general_params)
796 struct dsa_switch *ds = priv->ds;
799 /* The host port is the destination for traffic matching mac_fltres1
800 * and mac_fltres0 on all ports except itself. Default to an invalid
803 general_params->host_port = ds->num_ports;
805 /* Link-local traffic received on casc_port will be forwarded
806 * to host_port without embedding the source port and device ID
807 * info in the destination MAC address, and no RX timestamps will be
808 * taken either (presumably because it is a cascaded port and a
809 * downstream SJA switch already did that).
810 * To disable the feature, we need to do different things depending on
811 * switch generation. On SJA1105 we need to set an invalid port, while
812 * on SJA1110 which support multiple cascaded ports, this field is a
813 * bitmask so it must be left zero.
815 if (!priv->info->multiple_cascade_ports)
816 general_params->casc_port = ds->num_ports;
818 for (port = 0; port < ds->num_ports; port++) {
819 bool is_upstream = dsa_is_upstream_port(ds, port);
820 bool is_dsa_link = dsa_is_dsa_port(ds, port);
822 /* Upstream ports can be dedicated CPU ports or
823 * upstream-facing DSA links
826 if (general_params->host_port == ds->num_ports) {
827 general_params->host_port = port;
830 "Port %llu is already a host port, configuring %d as one too is not supported\n",
831 general_params->host_port, port);
836 /* Cascade ports are downstream-facing DSA links */
837 if (is_dsa_link && !is_upstream) {
838 if (priv->info->multiple_cascade_ports) {
839 general_params->casc_port |= BIT(port);
840 } else if (general_params->casc_port == ds->num_ports) {
841 general_params->casc_port = port;
844 "Port %llu is already a cascade port, configuring %d as one too is not supported\n",
845 general_params->casc_port, port);
851 if (general_params->host_port == ds->num_ports) {
852 dev_err(ds->dev, "No host port configured\n");
859 static int sja1105_init_general_params(struct sja1105_private *priv)
861 struct sja1105_general_params_entry default_general_params = {
862 /* Allow dynamic changing of the mirror port */
864 .switchid = priv->ds->index,
865 /* Priority queue for link-local management frames
866 * (both ingress to and egress from CPU - PTP, STP etc)
869 .mac_fltres1 = SJA1105_LINKLOCAL_FILTER_A,
870 .mac_flt1 = SJA1105_LINKLOCAL_FILTER_A_MASK,
871 .incl_srcpt1 = false,
873 .mac_fltres0 = SJA1105_LINKLOCAL_FILTER_B,
874 .mac_flt0 = SJA1105_LINKLOCAL_FILTER_B_MASK,
875 .incl_srcpt0 = false,
877 /* Default to an invalid value */
878 .mirr_port = priv->ds->num_ports,
880 .vllupformat = SJA1105_VL_FORMAT_PSFP,
883 /* Only update correctionField for 1-step PTP (L2 transport) */
885 /* Forcefully disable VLAN filtering by telling
886 * the switch that VLAN has a different EtherType.
888 .tpid = ETH_P_SJA1105,
889 .tpid2 = ETH_P_SJA1105,
890 /* Enable the TTEthernet engine on SJA1110 */
892 /* Set up the EtherType for control packets on SJA1110 */
893 .header_type = ETH_P_SJA1110,
895 struct sja1105_general_params_entry *general_params;
896 struct sja1105_table *table;
899 rc = sja1105_init_topology(priv, &default_general_params);
903 table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
905 if (table->entry_count) {
906 kfree(table->entries);
907 table->entry_count = 0;
910 table->entries = kcalloc(table->ops->max_entry_count,
911 table->ops->unpacked_entry_size, GFP_KERNEL);
915 table->entry_count = table->ops->max_entry_count;
917 general_params = table->entries;
919 /* This table only has a single entry */
920 general_params[0] = default_general_params;
922 sja1110_select_tdmaconfigidx(priv);
927 static int sja1105_init_avb_params(struct sja1105_private *priv)
929 struct sja1105_avb_params_entry *avb;
930 struct sja1105_table *table;
932 table = &priv->static_config.tables[BLK_IDX_AVB_PARAMS];
934 /* Discard previous AVB Parameters Table */
935 if (table->entry_count) {
936 kfree(table->entries);
937 table->entry_count = 0;
940 table->entries = kcalloc(table->ops->max_entry_count,
941 table->ops->unpacked_entry_size, GFP_KERNEL);
945 table->entry_count = table->ops->max_entry_count;
947 avb = table->entries;
949 /* Configure the MAC addresses for meta frames */
950 avb->destmeta = SJA1105_META_DMAC;
951 avb->srcmeta = SJA1105_META_SMAC;
952 /* On P/Q/R/S, configure the direction of the PTP_CLK pin as input by
953 * default. This is because there might be boards with a hardware
954 * layout where enabling the pin as output might cause an electrical
955 * clash. On E/T the pin is always an output, which the board designers
956 * probably already knew, so even if there are going to be electrical
957 * issues, there's nothing we can do.
959 avb->cas_master = false;
964 /* The L2 policing table is 2-stage. The table is looked up for each frame
965 * according to the ingress port, whether it was broadcast or not, and the
966 * classified traffic class (given by VLAN PCP). This portion of the lookup is
967 * fixed, and gives access to the SHARINDX, an indirection register pointing
968 * within the policing table itself, which is used to resolve the policer that
969 * will be used for this frame.
972 * +------------+--------+ +---------------------------------+
973 * |Port 0 TC 0 |SHARINDX| | Policer 0: Rate, Burst, MTU |
974 * +------------+--------+ +---------------------------------+
975 * |Port 0 TC 1 |SHARINDX| | Policer 1: Rate, Burst, MTU |
976 * +------------+--------+ +---------------------------------+
977 * ... | Policer 2: Rate, Burst, MTU |
978 * +------------+--------+ +---------------------------------+
979 * |Port 0 TC 7 |SHARINDX| | Policer 3: Rate, Burst, MTU |
980 * +------------+--------+ +---------------------------------+
981 * |Port 1 TC 0 |SHARINDX| | Policer 4: Rate, Burst, MTU |
982 * +------------+--------+ +---------------------------------+
983 * ... | Policer 5: Rate, Burst, MTU |
984 * +------------+--------+ +---------------------------------+
985 * |Port 1 TC 7 |SHARINDX| | Policer 6: Rate, Burst, MTU |
986 * +------------+--------+ +---------------------------------+
987 * ... | Policer 7: Rate, Burst, MTU |
988 * +------------+--------+ +---------------------------------+
989 * |Port 4 TC 7 |SHARINDX| ...
990 * +------------+--------+
991 * |Port 0 BCAST|SHARINDX| ...
992 * +------------+--------+
993 * |Port 1 BCAST|SHARINDX| ...
994 * +------------+--------+
996 * +------------+--------+ +---------------------------------+
997 * |Port 4 BCAST|SHARINDX| | Policer 44: Rate, Burst, MTU |
998 * +------------+--------+ +---------------------------------+
1000 * In this driver, we shall use policers 0-4 as statically alocated port
1001 * (matchall) policers. So we need to make the SHARINDX for all lookups
1002 * corresponding to this ingress port (8 VLAN PCP lookups and 1 broadcast
1004 * The remaining policers (40) shall be dynamically allocated for flower
1005 * policers, where the key is either vlan_prio or dst_mac ff:ff:ff:ff:ff:ff.
1007 #define SJA1105_RATE_MBPS(speed) (((speed) * 64000) / 1000)
1009 static int sja1105_init_l2_policing(struct sja1105_private *priv)
1011 struct sja1105_l2_policing_entry *policing;
1012 struct dsa_switch *ds = priv->ds;
1013 struct sja1105_table *table;
1016 table = &priv->static_config.tables[BLK_IDX_L2_POLICING];
1018 /* Discard previous L2 Policing Table */
1019 if (table->entry_count) {
1020 kfree(table->entries);
1021 table->entry_count = 0;
1024 table->entries = kcalloc(table->ops->max_entry_count,
1025 table->ops->unpacked_entry_size, GFP_KERNEL);
1026 if (!table->entries)
1029 table->entry_count = table->ops->max_entry_count;
1031 policing = table->entries;
1033 /* Setup shared indices for the matchall policers */
1034 for (port = 0; port < ds->num_ports; port++) {
1035 int mcast = (ds->num_ports * (SJA1105_NUM_TC + 1)) + port;
1036 int bcast = (ds->num_ports * SJA1105_NUM_TC) + port;
1038 for (tc = 0; tc < SJA1105_NUM_TC; tc++)
1039 policing[port * SJA1105_NUM_TC + tc].sharindx = port;
1041 policing[bcast].sharindx = port;
1042 /* Only SJA1110 has multicast policers */
1043 if (mcast <= table->ops->max_entry_count)
1044 policing[mcast].sharindx = port;
1047 /* Setup the matchall policer parameters */
1048 for (port = 0; port < ds->num_ports; port++) {
1049 int mtu = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
1051 if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
1054 policing[port].smax = 65535; /* Burst size in bytes */
1055 policing[port].rate = SJA1105_RATE_MBPS(1000);
1056 policing[port].maxlen = mtu;
1057 policing[port].partition = 0;
1063 static int sja1105_static_config_load(struct sja1105_private *priv)
1067 sja1105_static_config_free(&priv->static_config);
1068 rc = sja1105_static_config_init(&priv->static_config,
1069 priv->info->static_ops,
1070 priv->info->device_id);
1074 /* Build static configuration */
1075 rc = sja1105_init_mac_settings(priv);
1078 rc = sja1105_init_mii_settings(priv);
1081 rc = sja1105_init_static_fdb(priv);
1084 rc = sja1105_init_static_vlan(priv);
1087 rc = sja1105_init_l2_lookup_params(priv);
1090 rc = sja1105_init_l2_forwarding(priv);
1093 rc = sja1105_init_l2_forwarding_params(priv);
1096 rc = sja1105_init_l2_policing(priv);
1099 rc = sja1105_init_general_params(priv);
1102 rc = sja1105_init_avb_params(priv);
1105 rc = sja1110_init_pcp_remapping(priv);
1109 /* Send initial configuration to hardware via SPI */
1110 return sja1105_static_config_upload(priv);
1113 /* This is the "new way" for a MAC driver to configure its RGMII delay lines,
1114 * based on the explicit "rx-internal-delay-ps" and "tx-internal-delay-ps"
1115 * properties. It has the advantage of working with fixed links and with PHYs
1116 * that apply RGMII delays too, and the MAC driver needs not perform any
1119 * Previously we were acting upon the "phy-mode" property when we were
1120 * operating in fixed-link, basically acting as a PHY, but with a reversed
1121 * interpretation: PHY_INTERFACE_MODE_RGMII_TXID means that the MAC should
1122 * behave as if it is connected to a PHY which has applied RGMII delays in the
1123 * TX direction. So if anything, RX delays should have been added by the MAC,
1124 * but we were adding TX delays.
1126 * If the "{rx,tx}-internal-delay-ps" properties are not specified, we fall
1127 * back to the legacy behavior and apply delays on fixed-link ports based on
1128 * the reverse interpretation of the phy-mode. This is a deviation from the
1129 * expected default behavior which is to simply apply no delays. To achieve
1130 * that behavior with the new bindings, it is mandatory to specify
1131 * "{rx,tx}-internal-delay-ps" with a value of 0.
1133 static int sja1105_parse_rgmii_delays(struct sja1105_private *priv, int port,
1134 struct device_node *port_dn)
1136 phy_interface_t phy_mode = priv->phy_mode[port];
1137 struct device *dev = &priv->spidev->dev;
1138 int rx_delay = -1, tx_delay = -1;
1140 if (!phy_interface_mode_is_rgmii(phy_mode))
1143 of_property_read_u32(port_dn, "rx-internal-delay-ps", &rx_delay);
1144 of_property_read_u32(port_dn, "tx-internal-delay-ps", &tx_delay);
1146 if (rx_delay == -1 && tx_delay == -1 && priv->fixed_link[port]) {
1148 "Port %d interpreting RGMII delay settings based on \"phy-mode\" property, "
1149 "please update device tree to specify \"rx-internal-delay-ps\" and "
1150 "\"tx-internal-delay-ps\"",
1153 if (phy_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
1154 phy_mode == PHY_INTERFACE_MODE_RGMII_ID)
1157 if (phy_mode == PHY_INTERFACE_MODE_RGMII_TXID ||
1158 phy_mode == PHY_INTERFACE_MODE_RGMII_ID)
1167 if ((rx_delay || tx_delay) && !priv->info->setup_rgmii_delay) {
1168 dev_err(dev, "Chip cannot apply RGMII delays\n");
1172 if ((rx_delay && rx_delay < SJA1105_RGMII_DELAY_MIN_PS) ||
1173 (tx_delay && tx_delay < SJA1105_RGMII_DELAY_MIN_PS) ||
1174 (rx_delay > SJA1105_RGMII_DELAY_MAX_PS) ||
1175 (tx_delay > SJA1105_RGMII_DELAY_MAX_PS)) {
1177 "port %d RGMII delay values out of range, must be between %d and %d ps\n",
1178 port, SJA1105_RGMII_DELAY_MIN_PS, SJA1105_RGMII_DELAY_MAX_PS);
1182 priv->rgmii_rx_delay_ps[port] = rx_delay;
1183 priv->rgmii_tx_delay_ps[port] = tx_delay;
1188 static int sja1105_parse_ports_node(struct sja1105_private *priv,
1189 struct device_node *ports_node)
1191 struct device *dev = &priv->spidev->dev;
1192 struct device_node *child;
1194 for_each_available_child_of_node(ports_node, child) {
1195 struct device_node *phy_node;
1196 phy_interface_t phy_mode;
1200 /* Get switch port number from DT */
1201 if (of_property_read_u32(child, "reg", &index) < 0) {
1202 dev_err(dev, "Port number not defined in device tree "
1203 "(property \"reg\")\n");
1208 /* Get PHY mode from DT */
1209 err = of_get_phy_mode(child, &phy_mode);
1211 dev_err(dev, "Failed to read phy-mode or "
1212 "phy-interface-type property for port %d\n",
1218 phy_node = of_parse_phandle(child, "phy-handle", 0);
1220 if (!of_phy_is_fixed_link(child)) {
1221 dev_err(dev, "phy-handle or fixed-link "
1222 "properties missing!\n");
1226 /* phy-handle is missing, but fixed-link isn't.
1227 * So it's a fixed link. Default to PHY role.
1229 priv->fixed_link[index] = true;
1231 of_node_put(phy_node);
1234 priv->phy_mode[index] = phy_mode;
1236 err = sja1105_parse_rgmii_delays(priv, index, child);
1246 static int sja1105_parse_dt(struct sja1105_private *priv)
1248 struct device *dev = &priv->spidev->dev;
1249 struct device_node *switch_node = dev->of_node;
1250 struct device_node *ports_node;
1253 ports_node = of_get_child_by_name(switch_node, "ports");
1255 ports_node = of_get_child_by_name(switch_node, "ethernet-ports");
1257 dev_err(dev, "Incorrect bindings: absent \"ports\" node\n");
1261 rc = sja1105_parse_ports_node(priv, ports_node);
1262 of_node_put(ports_node);
1267 /* Convert link speed from SJA1105 to ethtool encoding */
1268 static int sja1105_port_speed_to_ethtool(struct sja1105_private *priv,
1271 if (speed == priv->info->port_speed[SJA1105_SPEED_10MBPS])
1273 if (speed == priv->info->port_speed[SJA1105_SPEED_100MBPS])
1275 if (speed == priv->info->port_speed[SJA1105_SPEED_1000MBPS])
1277 if (speed == priv->info->port_speed[SJA1105_SPEED_2500MBPS])
1279 return SPEED_UNKNOWN;
1282 /* Set link speed in the MAC configuration for a specific port. */
1283 static int sja1105_adjust_port_config(struct sja1105_private *priv, int port,
1286 struct sja1105_mac_config_entry *mac;
1287 struct device *dev = priv->ds->dev;
1291 /* On P/Q/R/S, one can read from the device via the MAC reconfiguration
1292 * tables. On E/T, MAC reconfig tables are not readable, only writable.
1293 * We have to *know* what the MAC looks like. For the sake of keeping
1294 * the code common, we'll use the static configuration tables as a
1295 * reasonable approximation for both E/T and P/Q/R/S.
1297 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
1299 switch (speed_mbps) {
1301 /* PHYLINK called sja1105_mac_config() to inform us about
1302 * the state->interface, but AN has not completed and the
1303 * speed is not yet valid. UM10944.pdf says that setting
1304 * SJA1105_SPEED_AUTO at runtime disables the port, so that is
1305 * ok for power consumption in case AN will never complete -
1306 * otherwise PHYLINK should come back with a new update.
1308 speed = priv->info->port_speed[SJA1105_SPEED_AUTO];
1311 speed = priv->info->port_speed[SJA1105_SPEED_10MBPS];
1314 speed = priv->info->port_speed[SJA1105_SPEED_100MBPS];
1317 speed = priv->info->port_speed[SJA1105_SPEED_1000MBPS];
1320 speed = priv->info->port_speed[SJA1105_SPEED_2500MBPS];
1323 dev_err(dev, "Invalid speed %iMbps\n", speed_mbps);
1327 /* Overwrite SJA1105_SPEED_AUTO from the static MAC configuration
1328 * table, since this will be used for the clocking setup, and we no
1329 * longer need to store it in the static config (already told hardware
1330 * we want auto during upload phase).
1331 * Actually for the SGMII port, the MAC is fixed at 1 Gbps and
1332 * we need to configure the PCS only (if even that).
1334 if (priv->phy_mode[port] == PHY_INTERFACE_MODE_SGMII)
1335 mac[port].speed = priv->info->port_speed[SJA1105_SPEED_1000MBPS];
1336 else if (priv->phy_mode[port] == PHY_INTERFACE_MODE_2500BASEX)
1337 mac[port].speed = priv->info->port_speed[SJA1105_SPEED_2500MBPS];
1339 mac[port].speed = speed;
1341 /* Write to the dynamic reconfiguration tables */
1342 rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
1345 dev_err(dev, "Failed to write MAC config: %d\n", rc);
1349 /* Reconfigure the PLLs for the RGMII interfaces (required 125 MHz at
1350 * gigabit, 25 MHz at 100 Mbps and 2.5 MHz at 10 Mbps). For MII and
1351 * RMII no change of the clock setup is required. Actually, changing
1352 * the clock setup does interrupt the clock signal for a certain time
1353 * which causes trouble for all PHYs relying on this signal.
1355 if (!phy_interface_mode_is_rgmii(priv->phy_mode[port]))
1358 return sja1105_clocking_setup_port(priv, port);
1361 /* The SJA1105 MAC programming model is through the static config (the xMII
1362 * Mode table cannot be dynamically reconfigured), and we have to program
1363 * that early (earlier than PHYLINK calls us, anyway).
1364 * So just error out in case the connected PHY attempts to change the initial
1365 * system interface MII protocol from what is defined in the DT, at least for
1368 static bool sja1105_phy_mode_mismatch(struct sja1105_private *priv, int port,
1369 phy_interface_t interface)
1371 return priv->phy_mode[port] != interface;
1374 static void sja1105_mac_config(struct dsa_switch *ds, int port,
1376 const struct phylink_link_state *state)
1378 struct dsa_port *dp = dsa_to_port(ds, port);
1379 struct sja1105_private *priv = ds->priv;
1380 struct dw_xpcs *xpcs;
1382 if (sja1105_phy_mode_mismatch(priv, port, state->interface)) {
1383 dev_err(ds->dev, "Changing PHY mode to %s not supported!\n",
1384 phy_modes(state->interface));
1388 xpcs = priv->xpcs[port];
1391 phylink_set_pcs(dp->pl, &xpcs->pcs);
1394 static void sja1105_mac_link_down(struct dsa_switch *ds, int port,
1396 phy_interface_t interface)
1398 sja1105_inhibit_tx(ds->priv, BIT(port), true);
1401 static void sja1105_mac_link_up(struct dsa_switch *ds, int port,
1403 phy_interface_t interface,
1404 struct phy_device *phydev,
1405 int speed, int duplex,
1406 bool tx_pause, bool rx_pause)
1408 struct sja1105_private *priv = ds->priv;
1410 sja1105_adjust_port_config(priv, port, speed);
1412 sja1105_inhibit_tx(priv, BIT(port), false);
1415 static void sja1105_phylink_validate(struct dsa_switch *ds, int port,
1416 unsigned long *supported,
1417 struct phylink_link_state *state)
1419 /* Construct a new mask which exhaustively contains all link features
1420 * supported by the MAC, and then apply that (logical AND) to what will
1421 * be sent to the PHY for "marketing".
1423 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1424 struct sja1105_private *priv = ds->priv;
1425 struct sja1105_xmii_params_entry *mii;
1427 mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
1429 /* include/linux/phylink.h says:
1430 * When @state->interface is %PHY_INTERFACE_MODE_NA, phylink
1431 * expects the MAC driver to return all supported link modes.
1433 if (state->interface != PHY_INTERFACE_MODE_NA &&
1434 sja1105_phy_mode_mismatch(priv, port, state->interface)) {
1435 linkmode_zero(supported);
1439 /* The MAC does not support pause frames, and also doesn't
1440 * support half-duplex traffic modes.
1442 phylink_set(mask, Autoneg);
1443 phylink_set(mask, MII);
1444 phylink_set(mask, 10baseT_Full);
1445 phylink_set(mask, 100baseT_Full);
1446 phylink_set(mask, 100baseT1_Full);
1447 if (mii->xmii_mode[port] == XMII_MODE_RGMII ||
1448 mii->xmii_mode[port] == XMII_MODE_SGMII)
1449 phylink_set(mask, 1000baseT_Full);
1450 if (priv->info->supports_2500basex[port]) {
1451 phylink_set(mask, 2500baseT_Full);
1452 phylink_set(mask, 2500baseX_Full);
1455 linkmode_and(supported, supported, mask);
1456 linkmode_and(state->advertising, state->advertising, mask);
1460 sja1105_find_static_fdb_entry(struct sja1105_private *priv, int port,
1461 const struct sja1105_l2_lookup_entry *requested)
1463 struct sja1105_l2_lookup_entry *l2_lookup;
1464 struct sja1105_table *table;
1467 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP];
1468 l2_lookup = table->entries;
1470 for (i = 0; i < table->entry_count; i++)
1471 if (l2_lookup[i].macaddr == requested->macaddr &&
1472 l2_lookup[i].vlanid == requested->vlanid &&
1473 l2_lookup[i].destports & BIT(port))
1479 /* We want FDB entries added statically through the bridge command to persist
1480 * across switch resets, which are a common thing during normal SJA1105
1481 * operation. So we have to back them up in the static configuration tables
1482 * and hence apply them on next static config upload... yay!
1485 sja1105_static_fdb_change(struct sja1105_private *priv, int port,
1486 const struct sja1105_l2_lookup_entry *requested,
1489 struct sja1105_l2_lookup_entry *l2_lookup;
1490 struct sja1105_table *table;
1493 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP];
1495 match = sja1105_find_static_fdb_entry(priv, port, requested);
1497 /* Can't delete a missing entry. */
1501 /* No match => new entry */
1502 rc = sja1105_table_resize(table, table->entry_count + 1);
1506 match = table->entry_count - 1;
1509 /* Assign pointer after the resize (it may be new memory) */
1510 l2_lookup = table->entries;
1513 * If the job was to add this FDB entry, it's already done (mostly
1514 * anyway, since the port forwarding mask may have changed, case in
1515 * which we update it).
1516 * Otherwise we have to delete it.
1519 l2_lookup[match] = *requested;
1523 /* To remove, the strategy is to overwrite the element with
1524 * the last one, and then reduce the array size by 1
1526 l2_lookup[match] = l2_lookup[table->entry_count - 1];
1527 return sja1105_table_resize(table, table->entry_count - 1);
1530 /* First-generation switches have a 4-way set associative TCAM that
1531 * holds the FDB entries. An FDB index spans from 0 to 1023 and is comprised of
1532 * a "bin" (grouping of 4 entries) and a "way" (an entry within a bin).
1533 * For the placement of a newly learnt FDB entry, the switch selects the bin
1534 * based on a hash function, and the way within that bin incrementally.
1536 static int sja1105et_fdb_index(int bin, int way)
1538 return bin * SJA1105ET_FDB_BIN_SIZE + way;
1541 static int sja1105et_is_fdb_entry_in_bin(struct sja1105_private *priv, int bin,
1542 const u8 *addr, u16 vid,
1543 struct sja1105_l2_lookup_entry *match,
1548 for (way = 0; way < SJA1105ET_FDB_BIN_SIZE; way++) {
1549 struct sja1105_l2_lookup_entry l2_lookup = {0};
1550 int index = sja1105et_fdb_index(bin, way);
1552 /* Skip unused entries, optionally marking them
1553 * into the return value
1555 if (sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1556 index, &l2_lookup)) {
1562 if (l2_lookup.macaddr == ether_addr_to_u64(addr) &&
1563 l2_lookup.vlanid == vid) {
1569 /* Return an invalid entry index if not found */
1573 int sja1105et_fdb_add(struct dsa_switch *ds, int port,
1574 const unsigned char *addr, u16 vid)
1576 struct sja1105_l2_lookup_entry l2_lookup = {0}, tmp;
1577 struct sja1105_private *priv = ds->priv;
1578 struct device *dev = ds->dev;
1579 int last_unused = -1;
1583 bin = sja1105et_fdb_hash(priv, addr, vid);
1585 way = sja1105et_is_fdb_entry_in_bin(priv, bin, addr, vid,
1586 &l2_lookup, &last_unused);
1588 /* We have an FDB entry. Is our port in the destination
1589 * mask? If yes, we need to do nothing. If not, we need
1590 * to rewrite the entry by adding this port to it.
1592 if ((l2_lookup.destports & BIT(port)) && l2_lookup.lockeds)
1594 l2_lookup.destports |= BIT(port);
1596 int index = sja1105et_fdb_index(bin, way);
1598 /* We don't have an FDB entry. We construct a new one and
1599 * try to find a place for it within the FDB table.
1601 l2_lookup.macaddr = ether_addr_to_u64(addr);
1602 l2_lookup.destports = BIT(port);
1603 l2_lookup.vlanid = vid;
1605 if (last_unused >= 0) {
1608 /* Bin is full, need to evict somebody.
1609 * Choose victim at random. If you get these messages
1610 * often, you may need to consider changing the
1611 * distribution function:
1612 * static_config[BLK_IDX_L2_LOOKUP_PARAMS].entries->poly
1614 get_random_bytes(&way, sizeof(u8));
1615 way %= SJA1105ET_FDB_BIN_SIZE;
1616 dev_warn(dev, "Warning, FDB bin %d full while adding entry for %pM. Evicting entry %u.\n",
1619 sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1620 index, NULL, false);
1623 l2_lookup.lockeds = true;
1624 l2_lookup.index = sja1105et_fdb_index(bin, way);
1626 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1627 l2_lookup.index, &l2_lookup,
1632 /* Invalidate a dynamically learned entry if that exists */
1633 start = sja1105et_fdb_index(bin, 0);
1634 end = sja1105et_fdb_index(bin, way);
1636 for (i = start; i < end; i++) {
1637 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1644 if (tmp.macaddr != ether_addr_to_u64(addr) || tmp.vlanid != vid)
1647 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1655 return sja1105_static_fdb_change(priv, port, &l2_lookup, true);
1658 int sja1105et_fdb_del(struct dsa_switch *ds, int port,
1659 const unsigned char *addr, u16 vid)
1661 struct sja1105_l2_lookup_entry l2_lookup = {0};
1662 struct sja1105_private *priv = ds->priv;
1663 int index, bin, way, rc;
1666 bin = sja1105et_fdb_hash(priv, addr, vid);
1667 way = sja1105et_is_fdb_entry_in_bin(priv, bin, addr, vid,
1671 index = sja1105et_fdb_index(bin, way);
1673 /* We have an FDB entry. Is our port in the destination mask? If yes,
1674 * we need to remove it. If the resulting port mask becomes empty, we
1675 * need to completely evict the FDB entry.
1676 * Otherwise we just write it back.
1678 l2_lookup.destports &= ~BIT(port);
1680 if (l2_lookup.destports)
1685 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1686 index, &l2_lookup, keep);
1690 return sja1105_static_fdb_change(priv, port, &l2_lookup, keep);
1693 int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port,
1694 const unsigned char *addr, u16 vid)
1696 struct sja1105_l2_lookup_entry l2_lookup = {0}, tmp;
1697 struct sja1105_private *priv = ds->priv;
1700 /* Search for an existing entry in the FDB table */
1701 l2_lookup.macaddr = ether_addr_to_u64(addr);
1702 l2_lookup.vlanid = vid;
1703 l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0);
1704 l2_lookup.mask_vlanid = VLAN_VID_MASK;
1705 l2_lookup.destports = BIT(port);
1709 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1710 SJA1105_SEARCH, &tmp);
1711 if (rc == 0 && tmp.index != SJA1105_MAX_L2_LOOKUP_COUNT - 1) {
1712 /* Found a static entry and this port is already in the entry's
1713 * port mask => job done
1715 if ((tmp.destports & BIT(port)) && tmp.lockeds)
1720 /* l2_lookup.index is populated by the switch in case it
1723 l2_lookup.destports |= BIT(port);
1724 goto skip_finding_an_index;
1727 /* Not found, so try to find an unused spot in the FDB.
1728 * This is slightly inefficient because the strategy is knock-knock at
1729 * every possible position from 0 to 1023.
1731 for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) {
1732 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1737 if (i == SJA1105_MAX_L2_LOOKUP_COUNT) {
1738 dev_err(ds->dev, "FDB is full, cannot add entry.\n");
1741 l2_lookup.index = i;
1743 skip_finding_an_index:
1744 l2_lookup.lockeds = true;
1746 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1747 l2_lookup.index, &l2_lookup,
1752 /* The switch learns dynamic entries and looks up the FDB left to
1753 * right. It is possible that our addition was concurrent with the
1754 * dynamic learning of the same address, so now that the static entry
1755 * has been installed, we are certain that address learning for this
1756 * particular address has been turned off, so the dynamic entry either
1757 * is in the FDB at an index smaller than the static one, or isn't (it
1758 * can also be at a larger index, but in that case it is inactive
1759 * because the static FDB entry will match first, and the dynamic one
1760 * will eventually age out). Search for a dynamically learned address
1761 * prior to our static one and invalidate it.
1765 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1766 SJA1105_SEARCH, &tmp);
1769 "port %d failed to read back entry for %pM vid %d: %pe\n",
1770 port, addr, vid, ERR_PTR(rc));
1774 if (tmp.index < l2_lookup.index) {
1775 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1776 tmp.index, NULL, false);
1781 return sja1105_static_fdb_change(priv, port, &l2_lookup, true);
1784 int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port,
1785 const unsigned char *addr, u16 vid)
1787 struct sja1105_l2_lookup_entry l2_lookup = {0};
1788 struct sja1105_private *priv = ds->priv;
1792 l2_lookup.macaddr = ether_addr_to_u64(addr);
1793 l2_lookup.vlanid = vid;
1794 l2_lookup.mask_macaddr = GENMASK_ULL(ETH_ALEN * 8 - 1, 0);
1795 l2_lookup.mask_vlanid = VLAN_VID_MASK;
1796 l2_lookup.destports = BIT(port);
1798 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1799 SJA1105_SEARCH, &l2_lookup);
1803 l2_lookup.destports &= ~BIT(port);
1805 /* Decide whether we remove just this port from the FDB entry,
1806 * or if we remove it completely.
1808 if (l2_lookup.destports)
1813 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
1814 l2_lookup.index, &l2_lookup, keep);
1818 return sja1105_static_fdb_change(priv, port, &l2_lookup, keep);
1821 static int sja1105_fdb_add(struct dsa_switch *ds, int port,
1822 const unsigned char *addr, u16 vid)
1824 struct sja1105_private *priv = ds->priv;
1826 return priv->info->fdb_add_cmd(ds, port, addr, vid);
1829 static int sja1105_fdb_del(struct dsa_switch *ds, int port,
1830 const unsigned char *addr, u16 vid)
1832 struct sja1105_private *priv = ds->priv;
1834 return priv->info->fdb_del_cmd(ds, port, addr, vid);
1837 static int sja1105_fdb_dump(struct dsa_switch *ds, int port,
1838 dsa_fdb_dump_cb_t *cb, void *data)
1840 struct dsa_port *dp = dsa_to_port(ds, port);
1841 struct sja1105_private *priv = ds->priv;
1842 struct device *dev = ds->dev;
1845 for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) {
1846 struct sja1105_l2_lookup_entry l2_lookup = {0};
1847 u8 macaddr[ETH_ALEN];
1850 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1852 /* No fdb entry at i, not an issue */
1856 dev_err(dev, "Failed to dump FDB: %d\n", rc);
1860 /* FDB dump callback is per port. This means we have to
1861 * disregard a valid entry if it's not for this port, even if
1862 * only to revisit it later. This is inefficient because the
1863 * 1024-sized FDB table needs to be traversed 4 times through
1864 * SPI during a 'bridge fdb show' command.
1866 if (!(l2_lookup.destports & BIT(port)))
1869 /* We need to hide the FDB entry for unknown multicast */
1870 if (l2_lookup.macaddr == SJA1105_UNKNOWN_MULTICAST &&
1871 l2_lookup.mask_macaddr == SJA1105_UNKNOWN_MULTICAST)
1874 u64_to_ether_addr(l2_lookup.macaddr, macaddr);
1876 /* We need to hide the dsa_8021q VLANs from the user. */
1877 if (!dsa_port_is_vlan_filtering(dp))
1878 l2_lookup.vlanid = 0;
1879 rc = cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data);
1886 static void sja1105_fast_age(struct dsa_switch *ds, int port)
1888 struct sja1105_private *priv = ds->priv;
1891 for (i = 0; i < SJA1105_MAX_L2_LOOKUP_COUNT; i++) {
1892 struct sja1105_l2_lookup_entry l2_lookup = {0};
1893 u8 macaddr[ETH_ALEN];
1896 rc = sja1105_dynamic_config_read(priv, BLK_IDX_L2_LOOKUP,
1898 /* No fdb entry at i, not an issue */
1902 dev_err(ds->dev, "Failed to read FDB: %pe\n",
1907 if (!(l2_lookup.destports & BIT(port)))
1910 /* Don't delete static FDB entries */
1911 if (l2_lookup.lockeds)
1914 u64_to_ether_addr(l2_lookup.macaddr, macaddr);
1916 rc = sja1105_fdb_del(ds, port, macaddr, l2_lookup.vlanid);
1919 "Failed to delete FDB entry %pM vid %lld: %pe\n",
1920 macaddr, l2_lookup.vlanid, ERR_PTR(rc));
1926 static int sja1105_mdb_add(struct dsa_switch *ds, int port,
1927 const struct switchdev_obj_port_mdb *mdb)
1929 return sja1105_fdb_add(ds, port, mdb->addr, mdb->vid);
1932 static int sja1105_mdb_del(struct dsa_switch *ds, int port,
1933 const struct switchdev_obj_port_mdb *mdb)
1935 return sja1105_fdb_del(ds, port, mdb->addr, mdb->vid);
1938 /* Common function for unicast and broadcast flood configuration.
1939 * Flooding is configured between each {ingress, egress} port pair, and since
1940 * the bridge's semantics are those of "egress flooding", it means we must
1941 * enable flooding towards this port from all ingress ports that are in the
1942 * same forwarding domain.
1944 static int sja1105_manage_flood_domains(struct sja1105_private *priv)
1946 struct sja1105_l2_forwarding_entry *l2_fwd;
1947 struct dsa_switch *ds = priv->ds;
1950 l2_fwd = priv->static_config.tables[BLK_IDX_L2_FORWARDING].entries;
1952 for (from = 0; from < ds->num_ports; from++) {
1953 u64 fl_domain = 0, bc_domain = 0;
1955 for (to = 0; to < priv->ds->num_ports; to++) {
1956 if (!sja1105_can_forward(l2_fwd, from, to))
1959 if (priv->ucast_egress_floods & BIT(to))
1960 fl_domain |= BIT(to);
1961 if (priv->bcast_egress_floods & BIT(to))
1962 bc_domain |= BIT(to);
1965 /* Nothing changed, nothing to do */
1966 if (l2_fwd[from].fl_domain == fl_domain &&
1967 l2_fwd[from].bc_domain == bc_domain)
1970 l2_fwd[from].fl_domain = fl_domain;
1971 l2_fwd[from].bc_domain = bc_domain;
1973 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_FORWARDING,
1974 from, &l2_fwd[from], true);
1982 static int sja1105_bridge_member(struct dsa_switch *ds, int port,
1983 struct dsa_bridge bridge, bool member)
1985 struct sja1105_l2_forwarding_entry *l2_fwd;
1986 struct sja1105_private *priv = ds->priv;
1989 l2_fwd = priv->static_config.tables[BLK_IDX_L2_FORWARDING].entries;
1991 for (i = 0; i < ds->num_ports; i++) {
1992 /* Add this port to the forwarding matrix of the
1993 * other ports in the same bridge, and viceversa.
1995 if (!dsa_is_user_port(ds, i))
1997 /* For the ports already under the bridge, only one thing needs
1998 * to be done, and that is to add this port to their
1999 * reachability domain. So we can perform the SPI write for
2000 * them immediately. However, for this port itself (the one
2001 * that is new to the bridge), we need to add all other ports
2002 * to its reachability domain. So we do that incrementally in
2003 * this loop, and perform the SPI write only at the end, once
2004 * the domain contains all other bridge ports.
2008 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
2010 sja1105_port_allow_traffic(l2_fwd, i, port, member);
2011 sja1105_port_allow_traffic(l2_fwd, port, i, member);
2013 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_FORWARDING,
2014 i, &l2_fwd[i], true);
2019 rc = sja1105_dynamic_config_write(priv, BLK_IDX_L2_FORWARDING,
2020 port, &l2_fwd[port], true);
2024 rc = sja1105_commit_pvid(ds, port);
2028 return sja1105_manage_flood_domains(priv);
2031 static void sja1105_bridge_stp_state_set(struct dsa_switch *ds, int port,
2034 struct dsa_port *dp = dsa_to_port(ds, port);
2035 struct sja1105_private *priv = ds->priv;
2036 struct sja1105_mac_config_entry *mac;
2038 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
2041 case BR_STATE_DISABLED:
2042 case BR_STATE_BLOCKING:
2043 /* From UM10944 description of DRPDTAG (why put this there?):
2044 * "Management traffic flows to the port regardless of the state
2045 * of the INGRESS flag". So BPDUs are still be allowed to pass.
2046 * At the moment no difference between DISABLED and BLOCKING.
2048 mac[port].ingress = false;
2049 mac[port].egress = false;
2050 mac[port].dyn_learn = false;
2052 case BR_STATE_LISTENING:
2053 mac[port].ingress = true;
2054 mac[port].egress = false;
2055 mac[port].dyn_learn = false;
2057 case BR_STATE_LEARNING:
2058 mac[port].ingress = true;
2059 mac[port].egress = false;
2060 mac[port].dyn_learn = dp->learning;
2062 case BR_STATE_FORWARDING:
2063 mac[port].ingress = true;
2064 mac[port].egress = true;
2065 mac[port].dyn_learn = dp->learning;
2068 dev_err(ds->dev, "invalid STP state: %d\n", state);
2072 sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
2076 static int sja1105_bridge_join(struct dsa_switch *ds, int port,
2077 struct dsa_bridge bridge,
2078 bool *tx_fwd_offload)
2082 rc = sja1105_bridge_member(ds, port, bridge, true);
2086 rc = dsa_tag_8021q_bridge_tx_fwd_offload(ds, port, bridge);
2088 sja1105_bridge_member(ds, port, bridge, false);
2092 *tx_fwd_offload = true;
2097 static void sja1105_bridge_leave(struct dsa_switch *ds, int port,
2098 struct dsa_bridge bridge)
2100 dsa_tag_8021q_bridge_tx_fwd_unoffload(ds, port, bridge);
2101 sja1105_bridge_member(ds, port, bridge, false);
2104 #define BYTES_PER_KBIT (1000LL / 8)
2106 static int sja1105_find_unused_cbs_shaper(struct sja1105_private *priv)
2110 for (i = 0; i < priv->info->num_cbs_shapers; i++)
2111 if (!priv->cbs[i].idle_slope && !priv->cbs[i].send_slope)
2117 static int sja1105_delete_cbs_shaper(struct sja1105_private *priv, int port,
2122 for (i = 0; i < priv->info->num_cbs_shapers; i++) {
2123 struct sja1105_cbs_entry *cbs = &priv->cbs[i];
2125 if (cbs->port == port && cbs->prio == prio) {
2126 memset(cbs, 0, sizeof(*cbs));
2127 return sja1105_dynamic_config_write(priv, BLK_IDX_CBS,
2135 static int sja1105_setup_tc_cbs(struct dsa_switch *ds, int port,
2136 struct tc_cbs_qopt_offload *offload)
2138 struct sja1105_private *priv = ds->priv;
2139 struct sja1105_cbs_entry *cbs;
2142 if (!offload->enable)
2143 return sja1105_delete_cbs_shaper(priv, port, offload->queue);
2145 index = sja1105_find_unused_cbs_shaper(priv);
2149 cbs = &priv->cbs[index];
2151 cbs->prio = offload->queue;
2152 /* locredit and sendslope are negative by definition. In hardware,
2153 * positive values must be provided, and the negative sign is implicit.
2155 cbs->credit_hi = offload->hicredit;
2156 cbs->credit_lo = abs(offload->locredit);
2157 /* User space is in kbits/sec, hardware in bytes/sec */
2158 cbs->idle_slope = offload->idleslope * BYTES_PER_KBIT;
2159 cbs->send_slope = abs(offload->sendslope * BYTES_PER_KBIT);
2160 /* Convert the negative values from 64-bit 2's complement
2161 * to 32-bit 2's complement (for the case of 0x80000000 whose
2162 * negative is still negative).
2164 cbs->credit_lo &= GENMASK_ULL(31, 0);
2165 cbs->send_slope &= GENMASK_ULL(31, 0);
2167 return sja1105_dynamic_config_write(priv, BLK_IDX_CBS, index, cbs,
2171 static int sja1105_reload_cbs(struct sja1105_private *priv)
2175 /* The credit based shapers are only allocated if
2176 * CONFIG_NET_SCH_CBS is enabled.
2181 for (i = 0; i < priv->info->num_cbs_shapers; i++) {
2182 struct sja1105_cbs_entry *cbs = &priv->cbs[i];
2184 if (!cbs->idle_slope && !cbs->send_slope)
2187 rc = sja1105_dynamic_config_write(priv, BLK_IDX_CBS, i, cbs,
2196 static const char * const sja1105_reset_reasons[] = {
2197 [SJA1105_VLAN_FILTERING] = "VLAN filtering",
2198 [SJA1105_RX_HWTSTAMPING] = "RX timestamping",
2199 [SJA1105_AGEING_TIME] = "Ageing time",
2200 [SJA1105_SCHEDULING] = "Time-aware scheduling",
2201 [SJA1105_BEST_EFFORT_POLICING] = "Best-effort policing",
2202 [SJA1105_VIRTUAL_LINKS] = "Virtual links",
2205 /* For situations where we need to change a setting at runtime that is only
2206 * available through the static configuration, resetting the switch in order
2207 * to upload the new static config is unavoidable. Back up the settings we
2208 * modify at runtime (currently only MAC) and restore them after uploading,
2209 * such that this operation is relatively seamless.
2211 int sja1105_static_config_reload(struct sja1105_private *priv,
2212 enum sja1105_reset_reason reason)
2214 struct ptp_system_timestamp ptp_sts_before;
2215 struct ptp_system_timestamp ptp_sts_after;
2216 int speed_mbps[SJA1105_MAX_NUM_PORTS];
2217 u16 bmcr[SJA1105_MAX_NUM_PORTS] = {0};
2218 struct sja1105_mac_config_entry *mac;
2219 struct dsa_switch *ds = priv->ds;
2225 mutex_lock(&priv->mgmt_lock);
2227 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
2229 /* Back up the dynamic link speed changed by sja1105_adjust_port_config
2230 * in order to temporarily restore it to SJA1105_SPEED_AUTO - which the
2231 * switch wants to see in the static config in order to allow us to
2232 * change it through the dynamic interface later.
2234 for (i = 0; i < ds->num_ports; i++) {
2235 u32 reg_addr = mdiobus_c45_addr(MDIO_MMD_VEND2, MDIO_CTRL1);
2237 speed_mbps[i] = sja1105_port_speed_to_ethtool(priv,
2239 mac[i].speed = priv->info->port_speed[SJA1105_SPEED_AUTO];
2242 bmcr[i] = mdiobus_read(priv->mdio_pcs, i, reg_addr);
2245 /* No PTP operations can run right now */
2246 mutex_lock(&priv->ptp_data.lock);
2248 rc = __sja1105_ptp_gettimex(ds, &now, &ptp_sts_before);
2250 mutex_unlock(&priv->ptp_data.lock);
2254 /* Reset switch and send updated static configuration */
2255 rc = sja1105_static_config_upload(priv);
2257 mutex_unlock(&priv->ptp_data.lock);
2261 rc = __sja1105_ptp_settime(ds, 0, &ptp_sts_after);
2263 mutex_unlock(&priv->ptp_data.lock);
2267 t1 = timespec64_to_ns(&ptp_sts_before.pre_ts);
2268 t2 = timespec64_to_ns(&ptp_sts_before.post_ts);
2269 t3 = timespec64_to_ns(&ptp_sts_after.pre_ts);
2270 t4 = timespec64_to_ns(&ptp_sts_after.post_ts);
2271 /* Mid point, corresponds to pre-reset PTPCLKVAL */
2272 t12 = t1 + (t2 - t1) / 2;
2273 /* Mid point, corresponds to post-reset PTPCLKVAL, aka 0 */
2274 t34 = t3 + (t4 - t3) / 2;
2275 /* Advance PTPCLKVAL by the time it took since its readout */
2278 __sja1105_ptp_adjtime(ds, now);
2280 mutex_unlock(&priv->ptp_data.lock);
2282 dev_info(priv->ds->dev,
2283 "Reset switch and programmed static config. Reason: %s\n",
2284 sja1105_reset_reasons[reason]);
2286 /* Configure the CGU (PLLs) for MII and RMII PHYs.
2287 * For these interfaces there is no dynamic configuration
2288 * needed, since PLLs have same settings at all speeds.
2290 if (priv->info->clocking_setup) {
2291 rc = priv->info->clocking_setup(priv);
2296 for (i = 0; i < ds->num_ports; i++) {
2297 struct dw_xpcs *xpcs = priv->xpcs[i];
2300 rc = sja1105_adjust_port_config(priv, i, speed_mbps[i]);
2307 if (bmcr[i] & BMCR_ANENABLE)
2308 mode = MLO_AN_INBAND;
2309 else if (priv->fixed_link[i])
2310 mode = MLO_AN_FIXED;
2314 rc = xpcs_do_config(xpcs, priv->phy_mode[i], mode);
2318 if (!phylink_autoneg_inband(mode)) {
2319 int speed = SPEED_UNKNOWN;
2321 if (priv->phy_mode[i] == PHY_INTERFACE_MODE_2500BASEX)
2323 else if (bmcr[i] & BMCR_SPEED1000)
2325 else if (bmcr[i] & BMCR_SPEED100)
2330 xpcs_link_up(&xpcs->pcs, mode, priv->phy_mode[i],
2331 speed, DUPLEX_FULL);
2335 rc = sja1105_reload_cbs(priv);
2339 mutex_unlock(&priv->mgmt_lock);
2344 static enum dsa_tag_protocol
2345 sja1105_get_tag_protocol(struct dsa_switch *ds, int port,
2346 enum dsa_tag_protocol mp)
2348 struct sja1105_private *priv = ds->priv;
2350 return priv->info->tag_proto;
2353 /* The TPID setting belongs to the General Parameters table,
2354 * which can only be partially reconfigured at runtime (and not the TPID).
2355 * So a switch reset is required.
2357 int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
2358 struct netlink_ext_ack *extack)
2360 struct sja1105_l2_lookup_params_entry *l2_lookup_params;
2361 struct sja1105_general_params_entry *general_params;
2362 struct sja1105_private *priv = ds->priv;
2363 struct sja1105_table *table;
2364 struct sja1105_rule *rule;
2368 list_for_each_entry(rule, &priv->flow_block.rules, list) {
2369 if (rule->type == SJA1105_RULE_VL) {
2370 NL_SET_ERR_MSG_MOD(extack,
2371 "Cannot change VLAN filtering with active VL rules");
2377 /* Enable VLAN filtering. */
2379 tpid2 = ETH_P_8021AD;
2381 /* Disable VLAN filtering. */
2382 tpid = ETH_P_SJA1105;
2383 tpid2 = ETH_P_SJA1105;
2386 table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
2387 general_params = table->entries;
2388 /* EtherType used to identify inner tagged (C-tag) VLAN traffic */
2389 general_params->tpid = tpid;
2390 /* EtherType used to identify outer tagged (S-tag) VLAN traffic */
2391 general_params->tpid2 = tpid2;
2392 /* When VLAN filtering is on, we need to at least be able to
2393 * decode management traffic through the "backup plan".
2395 general_params->incl_srcpt1 = enabled;
2396 general_params->incl_srcpt0 = enabled;
2398 /* VLAN filtering => independent VLAN learning.
2399 * No VLAN filtering (or best effort) => shared VLAN learning.
2401 * In shared VLAN learning mode, untagged traffic still gets
2402 * pvid-tagged, and the FDB table gets populated with entries
2403 * containing the "real" (pvid or from VLAN tag) VLAN ID.
2404 * However the switch performs a masked L2 lookup in the FDB,
2405 * effectively only looking up a frame's DMAC (and not VID) for the
2406 * forwarding decision.
2408 * This is extremely convenient for us, because in modes with
2409 * vlan_filtering=0, dsa_8021q actually installs unique pvid's into
2410 * each front panel port. This is good for identification but breaks
2411 * learning badly - the VID of the learnt FDB entry is unique, aka
2412 * no frames coming from any other port are going to have it. So
2413 * for forwarding purposes, this is as though learning was broken
2414 * (all frames get flooded).
2416 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
2417 l2_lookup_params = table->entries;
2418 l2_lookup_params->shared_learn = !enabled;
2420 for (port = 0; port < ds->num_ports; port++) {
2421 if (dsa_is_unused_port(ds, port))
2424 rc = sja1105_commit_pvid(ds, port);
2429 rc = sja1105_static_config_reload(priv, SJA1105_VLAN_FILTERING);
2431 NL_SET_ERR_MSG_MOD(extack, "Failed to change VLAN Ethertype");
2436 static int sja1105_vlan_add(struct sja1105_private *priv, int port, u16 vid,
2437 u16 flags, bool allowed_ingress)
2439 struct sja1105_vlan_lookup_entry *vlan;
2440 struct sja1105_table *table;
2443 table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
2445 match = sja1105_is_vlan_configured(priv, vid);
2447 rc = sja1105_table_resize(table, table->entry_count + 1);
2450 match = table->entry_count - 1;
2453 /* Assign pointer after the resize (it's new memory) */
2454 vlan = table->entries;
2456 vlan[match].type_entry = SJA1110_VLAN_D_TAG;
2457 vlan[match].vlanid = vid;
2458 vlan[match].vlan_bc |= BIT(port);
2460 if (allowed_ingress)
2461 vlan[match].vmemb_port |= BIT(port);
2463 vlan[match].vmemb_port &= ~BIT(port);
2465 if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
2466 vlan[match].tag_port &= ~BIT(port);
2468 vlan[match].tag_port |= BIT(port);
2470 return sja1105_dynamic_config_write(priv, BLK_IDX_VLAN_LOOKUP, vid,
2471 &vlan[match], true);
2474 static int sja1105_vlan_del(struct sja1105_private *priv, int port, u16 vid)
2476 struct sja1105_vlan_lookup_entry *vlan;
2477 struct sja1105_table *table;
2481 table = &priv->static_config.tables[BLK_IDX_VLAN_LOOKUP];
2483 match = sja1105_is_vlan_configured(priv, vid);
2484 /* Can't delete a missing entry. */
2488 /* Assign pointer after the resize (it's new memory) */
2489 vlan = table->entries;
2491 vlan[match].vlanid = vid;
2492 vlan[match].vlan_bc &= ~BIT(port);
2493 vlan[match].vmemb_port &= ~BIT(port);
2494 /* Also unset tag_port, just so we don't have a confusing bitmap
2495 * (no practical purpose).
2497 vlan[match].tag_port &= ~BIT(port);
2499 /* If there's no port left as member of this VLAN,
2500 * it's time for it to go.
2502 if (!vlan[match].vmemb_port)
2505 rc = sja1105_dynamic_config_write(priv, BLK_IDX_VLAN_LOOKUP, vid,
2506 &vlan[match], keep);
2511 return sja1105_table_delete_entry(table, match);
2516 static int sja1105_bridge_vlan_add(struct dsa_switch *ds, int port,
2517 const struct switchdev_obj_port_vlan *vlan,
2518 struct netlink_ext_ack *extack)
2520 struct sja1105_private *priv = ds->priv;
2521 u16 flags = vlan->flags;
2524 /* Be sure to deny alterations to the configuration done by tag_8021q.
2526 if (vid_is_dsa_8021q(vlan->vid)) {
2527 NL_SET_ERR_MSG_MOD(extack,
2528 "Range 1024-3071 reserved for dsa_8021q operation");
2532 /* Always install bridge VLANs as egress-tagged on CPU and DSA ports */
2533 if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
2536 rc = sja1105_vlan_add(priv, port, vlan->vid, flags, true);
2540 if (vlan->flags & BRIDGE_VLAN_INFO_PVID)
2541 priv->bridge_pvid[port] = vlan->vid;
2543 return sja1105_commit_pvid(ds, port);
2546 static int sja1105_bridge_vlan_del(struct dsa_switch *ds, int port,
2547 const struct switchdev_obj_port_vlan *vlan)
2549 struct sja1105_private *priv = ds->priv;
2552 rc = sja1105_vlan_del(priv, port, vlan->vid);
2556 /* In case the pvid was deleted, make sure that untagged packets will
2559 return sja1105_commit_pvid(ds, port);
2562 static int sja1105_dsa_8021q_vlan_add(struct dsa_switch *ds, int port, u16 vid,
2565 struct sja1105_private *priv = ds->priv;
2566 bool allowed_ingress = true;
2569 /* Prevent attackers from trying to inject a DSA tag from
2570 * the outside world.
2572 if (dsa_is_user_port(ds, port))
2573 allowed_ingress = false;
2575 rc = sja1105_vlan_add(priv, port, vid, flags, allowed_ingress);
2579 if (flags & BRIDGE_VLAN_INFO_PVID)
2580 priv->tag_8021q_pvid[port] = vid;
2582 return sja1105_commit_pvid(ds, port);
2585 static int sja1105_dsa_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)
2587 struct sja1105_private *priv = ds->priv;
2589 return sja1105_vlan_del(priv, port, vid);
2592 static int sja1105_prechangeupper(struct dsa_switch *ds, int port,
2593 struct netdev_notifier_changeupper_info *info)
2595 struct netlink_ext_ack *extack = info->info.extack;
2596 struct net_device *upper = info->upper_dev;
2597 struct dsa_switch_tree *dst = ds->dst;
2598 struct dsa_port *dp;
2600 if (is_vlan_dev(upper)) {
2601 NL_SET_ERR_MSG_MOD(extack, "8021q uppers are not supported");
2605 if (netif_is_bridge_master(upper)) {
2606 list_for_each_entry(dp, &dst->ports, list) {
2607 struct net_device *br = dsa_port_bridge_dev_get(dp);
2609 if (br && br != upper && br_vlan_enabled(br)) {
2610 NL_SET_ERR_MSG_MOD(extack,
2611 "Only one VLAN-aware bridge is supported");
2620 static int sja1105_mgmt_xmit(struct dsa_switch *ds, int port, int slot,
2621 struct sk_buff *skb, bool takets)
2623 struct sja1105_mgmt_entry mgmt_route = {0};
2624 struct sja1105_private *priv = ds->priv;
2631 mgmt_route.macaddr = ether_addr_to_u64(hdr->h_dest);
2632 mgmt_route.destports = BIT(port);
2633 mgmt_route.enfport = 1;
2634 mgmt_route.tsreg = 0;
2635 mgmt_route.takets = takets;
2637 rc = sja1105_dynamic_config_write(priv, BLK_IDX_MGMT_ROUTE,
2638 slot, &mgmt_route, true);
2644 /* Transfer skb to the host port. */
2645 dsa_enqueue_skb(skb, dsa_to_port(ds, port)->slave);
2647 /* Wait until the switch has processed the frame */
2649 rc = sja1105_dynamic_config_read(priv, BLK_IDX_MGMT_ROUTE,
2652 dev_err_ratelimited(priv->ds->dev,
2653 "failed to poll for mgmt route\n");
2657 /* UM10944: The ENFPORT flag of the respective entry is
2658 * cleared when a match is found. The host can use this
2659 * flag as an acknowledgment.
2662 } while (mgmt_route.enfport && --timeout);
2665 /* Clean up the management route so that a follow-up
2666 * frame may not match on it by mistake.
2667 * This is only hardware supported on P/Q/R/S - on E/T it is
2668 * a no-op and we are silently discarding the -EOPNOTSUPP.
2670 sja1105_dynamic_config_write(priv, BLK_IDX_MGMT_ROUTE,
2671 slot, &mgmt_route, false);
2672 dev_err_ratelimited(priv->ds->dev, "xmit timed out\n");
2675 return NETDEV_TX_OK;
2678 #define work_to_xmit_work(w) \
2679 container_of((w), struct sja1105_deferred_xmit_work, work)
2681 /* Deferred work is unfortunately necessary because setting up the management
2682 * route cannot be done from atomit context (SPI transfer takes a sleepable
2685 static void sja1105_port_deferred_xmit(struct kthread_work *work)
2687 struct sja1105_deferred_xmit_work *xmit_work = work_to_xmit_work(work);
2688 struct sk_buff *clone, *skb = xmit_work->skb;
2689 struct dsa_switch *ds = xmit_work->dp->ds;
2690 struct sja1105_private *priv = ds->priv;
2691 int port = xmit_work->dp->index;
2693 clone = SJA1105_SKB_CB(skb)->clone;
2695 mutex_lock(&priv->mgmt_lock);
2697 sja1105_mgmt_xmit(ds, port, 0, skb, !!clone);
2699 /* The clone, if there, was made by dsa_skb_tx_timestamp */
2701 sja1105_ptp_txtstamp_skb(ds, port, clone);
2703 mutex_unlock(&priv->mgmt_lock);
2708 static int sja1105_connect_tag_protocol(struct dsa_switch *ds,
2709 enum dsa_tag_protocol proto)
2711 struct sja1105_private *priv = ds->priv;
2712 struct sja1105_tagger_data *tagger_data;
2714 if (proto != priv->info->tag_proto)
2715 return -EPROTONOSUPPORT;
2717 tagger_data = sja1105_tagger_data(ds);
2718 tagger_data->xmit_work_fn = sja1105_port_deferred_xmit;
2719 tagger_data->meta_tstamp_handler = sja1110_process_meta_tstamp;
2724 /* The MAXAGE setting belongs to the L2 Forwarding Parameters table,
2725 * which cannot be reconfigured at runtime. So a switch reset is required.
2727 static int sja1105_set_ageing_time(struct dsa_switch *ds,
2728 unsigned int ageing_time)
2730 struct sja1105_l2_lookup_params_entry *l2_lookup_params;
2731 struct sja1105_private *priv = ds->priv;
2732 struct sja1105_table *table;
2733 unsigned int maxage;
2735 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
2736 l2_lookup_params = table->entries;
2738 maxage = SJA1105_AGEING_TIME_MS(ageing_time);
2740 if (l2_lookup_params->maxage == maxage)
2743 l2_lookup_params->maxage = maxage;
2745 return sja1105_static_config_reload(priv, SJA1105_AGEING_TIME);
2748 static int sja1105_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
2750 struct sja1105_l2_policing_entry *policing;
2751 struct sja1105_private *priv = ds->priv;
2753 new_mtu += VLAN_ETH_HLEN + ETH_FCS_LEN;
2755 if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
2756 new_mtu += VLAN_HLEN;
2758 policing = priv->static_config.tables[BLK_IDX_L2_POLICING].entries;
2760 if (policing[port].maxlen == new_mtu)
2763 policing[port].maxlen = new_mtu;
2765 return sja1105_static_config_reload(priv, SJA1105_BEST_EFFORT_POLICING);
2768 static int sja1105_get_max_mtu(struct dsa_switch *ds, int port)
2770 return 2043 - VLAN_ETH_HLEN - ETH_FCS_LEN;
2773 static int sja1105_port_setup_tc(struct dsa_switch *ds, int port,
2774 enum tc_setup_type type,
2778 case TC_SETUP_QDISC_TAPRIO:
2779 return sja1105_setup_tc_taprio(ds, port, type_data);
2780 case TC_SETUP_QDISC_CBS:
2781 return sja1105_setup_tc_cbs(ds, port, type_data);
2787 /* We have a single mirror (@to) port, but can configure ingress and egress
2788 * mirroring on all other (@from) ports.
2789 * We need to allow mirroring rules only as long as the @to port is always the
2790 * same, and we need to unset the @to port from mirr_port only when there is no
2791 * mirroring rule that references it.
2793 static int sja1105_mirror_apply(struct sja1105_private *priv, int from, int to,
2794 bool ingress, bool enabled)
2796 struct sja1105_general_params_entry *general_params;
2797 struct sja1105_mac_config_entry *mac;
2798 struct dsa_switch *ds = priv->ds;
2799 struct sja1105_table *table;
2800 bool already_enabled;
2804 table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
2805 general_params = table->entries;
2807 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
2809 already_enabled = (general_params->mirr_port != ds->num_ports);
2810 if (already_enabled && enabled && general_params->mirr_port != to) {
2811 dev_err(priv->ds->dev,
2812 "Delete mirroring rules towards port %llu first\n",
2813 general_params->mirr_port);
2822 /* Anybody still referencing mirr_port? */
2823 for (port = 0; port < ds->num_ports; port++) {
2824 if (mac[port].ing_mirr || mac[port].egr_mirr) {
2829 /* Unset already_enabled for next time */
2831 new_mirr_port = ds->num_ports;
2833 if (new_mirr_port != general_params->mirr_port) {
2834 general_params->mirr_port = new_mirr_port;
2836 rc = sja1105_dynamic_config_write(priv, BLK_IDX_GENERAL_PARAMS,
2837 0, general_params, true);
2843 mac[from].ing_mirr = enabled;
2845 mac[from].egr_mirr = enabled;
2847 return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, from,
2851 static int sja1105_mirror_add(struct dsa_switch *ds, int port,
2852 struct dsa_mall_mirror_tc_entry *mirror,
2855 return sja1105_mirror_apply(ds->priv, port, mirror->to_local_port,
2859 static void sja1105_mirror_del(struct dsa_switch *ds, int port,
2860 struct dsa_mall_mirror_tc_entry *mirror)
2862 sja1105_mirror_apply(ds->priv, port, mirror->to_local_port,
2863 mirror->ingress, false);
2866 static int sja1105_port_policer_add(struct dsa_switch *ds, int port,
2867 struct dsa_mall_policer_tc_entry *policer)
2869 struct sja1105_l2_policing_entry *policing;
2870 struct sja1105_private *priv = ds->priv;
2872 policing = priv->static_config.tables[BLK_IDX_L2_POLICING].entries;
2874 /* In hardware, every 8 microseconds the credit level is incremented by
2875 * the value of RATE bytes divided by 64, up to a maximum of SMAX
2878 policing[port].rate = div_u64(512 * policer->rate_bytes_per_sec,
2880 policing[port].smax = policer->burst;
2882 return sja1105_static_config_reload(priv, SJA1105_BEST_EFFORT_POLICING);
2885 static void sja1105_port_policer_del(struct dsa_switch *ds, int port)
2887 struct sja1105_l2_policing_entry *policing;
2888 struct sja1105_private *priv = ds->priv;
2890 policing = priv->static_config.tables[BLK_IDX_L2_POLICING].entries;
2892 policing[port].rate = SJA1105_RATE_MBPS(1000);
2893 policing[port].smax = 65535;
2895 sja1105_static_config_reload(priv, SJA1105_BEST_EFFORT_POLICING);
2898 static int sja1105_port_set_learning(struct sja1105_private *priv, int port,
2901 struct sja1105_mac_config_entry *mac;
2903 mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries;
2905 mac[port].dyn_learn = enabled;
2907 return sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port,
2911 static int sja1105_port_ucast_bcast_flood(struct sja1105_private *priv, int to,
2912 struct switchdev_brport_flags flags)
2914 if (flags.mask & BR_FLOOD) {
2915 if (flags.val & BR_FLOOD)
2916 priv->ucast_egress_floods |= BIT(to);
2918 priv->ucast_egress_floods &= ~BIT(to);
2921 if (flags.mask & BR_BCAST_FLOOD) {
2922 if (flags.val & BR_BCAST_FLOOD)
2923 priv->bcast_egress_floods |= BIT(to);
2925 priv->bcast_egress_floods &= ~BIT(to);
2928 return sja1105_manage_flood_domains(priv);
2931 static int sja1105_port_mcast_flood(struct sja1105_private *priv, int to,
2932 struct switchdev_brport_flags flags,
2933 struct netlink_ext_ack *extack)
2935 struct sja1105_l2_lookup_entry *l2_lookup;
2936 struct sja1105_table *table;
2939 table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP];
2940 l2_lookup = table->entries;
2942 for (match = 0; match < table->entry_count; match++)
2943 if (l2_lookup[match].macaddr == SJA1105_UNKNOWN_MULTICAST &&
2944 l2_lookup[match].mask_macaddr == SJA1105_UNKNOWN_MULTICAST)
2947 if (match == table->entry_count) {
2948 NL_SET_ERR_MSG_MOD(extack,
2949 "Could not find FDB entry for unknown multicast");
2953 if (flags.val & BR_MCAST_FLOOD)
2954 l2_lookup[match].destports |= BIT(to);
2956 l2_lookup[match].destports &= ~BIT(to);
2958 return sja1105_dynamic_config_write(priv, BLK_IDX_L2_LOOKUP,
2959 l2_lookup[match].index,
2964 static int sja1105_port_pre_bridge_flags(struct dsa_switch *ds, int port,
2965 struct switchdev_brport_flags flags,
2966 struct netlink_ext_ack *extack)
2968 struct sja1105_private *priv = ds->priv;
2970 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
2974 if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD) &&
2975 !priv->info->can_limit_mcast_flood) {
2976 bool multicast = !!(flags.val & BR_MCAST_FLOOD);
2977 bool unicast = !!(flags.val & BR_FLOOD);
2979 if (unicast != multicast) {
2980 NL_SET_ERR_MSG_MOD(extack,
2981 "This chip cannot configure multicast flooding independently of unicast");
2989 static int sja1105_port_bridge_flags(struct dsa_switch *ds, int port,
2990 struct switchdev_brport_flags flags,
2991 struct netlink_ext_ack *extack)
2993 struct sja1105_private *priv = ds->priv;
2996 if (flags.mask & BR_LEARNING) {
2997 bool learn_ena = !!(flags.val & BR_LEARNING);
2999 rc = sja1105_port_set_learning(priv, port, learn_ena);
3004 if (flags.mask & (BR_FLOOD | BR_BCAST_FLOOD)) {
3005 rc = sja1105_port_ucast_bcast_flood(priv, port, flags);
3010 /* For chips that can't offload BR_MCAST_FLOOD independently, there
3011 * is nothing to do here, we ensured the configuration is in sync by
3012 * offloading BR_FLOOD.
3014 if (flags.mask & BR_MCAST_FLOOD && priv->info->can_limit_mcast_flood) {
3015 rc = sja1105_port_mcast_flood(priv, port, flags,
3024 /* The programming model for the SJA1105 switch is "all-at-once" via static
3025 * configuration tables. Some of these can be dynamically modified at runtime,
3026 * but not the xMII mode parameters table.
3027 * Furthermode, some PHYs may not have crystals for generating their clocks
3028 * (e.g. RMII). Instead, their 50MHz clock is supplied via the SJA1105 port's
3029 * ref_clk pin. So port clocking needs to be initialized early, before
3030 * connecting to PHYs is attempted, otherwise they won't respond through MDIO.
3031 * Setting correct PHY link speed does not matter now.
3032 * But dsa_slave_phy_setup is called later than sja1105_setup, so the PHY
3033 * bindings are not yet parsed by DSA core. We need to parse early so that we
3034 * can populate the xMII mode parameters table.
3036 static int sja1105_setup(struct dsa_switch *ds)
3038 struct sja1105_private *priv = ds->priv;
3041 if (priv->info->disable_microcontroller) {
3042 rc = priv->info->disable_microcontroller(priv);
3045 "Failed to disable microcontroller: %pe\n",
3051 /* Create and send configuration down to device */
3052 rc = sja1105_static_config_load(priv);
3054 dev_err(ds->dev, "Failed to load static config: %d\n", rc);
3058 /* Configure the CGU (PHY link modes and speeds) */
3059 if (priv->info->clocking_setup) {
3060 rc = priv->info->clocking_setup(priv);
3063 "Failed to configure MII clocking: %pe\n",
3065 goto out_static_config_free;
3069 sja1105_tas_setup(ds);
3070 sja1105_flower_setup(ds);
3072 rc = sja1105_ptp_clock_register(ds);
3074 dev_err(ds->dev, "Failed to register PTP clock: %d\n", rc);
3075 goto out_flower_teardown;
3078 rc = sja1105_mdiobus_register(ds);
3080 dev_err(ds->dev, "Failed to register MDIO bus: %pe\n",
3082 goto out_ptp_clock_unregister;
3085 rc = sja1105_devlink_setup(ds);
3087 goto out_mdiobus_unregister;
3090 rc = dsa_tag_8021q_register(ds, htons(ETH_P_8021Q));
3093 goto out_devlink_teardown;
3095 /* On SJA1105, VLAN filtering per se is always enabled in hardware.
3096 * The only thing we can do to disable it is lie about what the 802.1Q
3098 * So it will still try to apply VLAN filtering, but all ingress
3099 * traffic (except frames received with EtherType of ETH_P_SJA1105)
3100 * will be internally tagged with a distorted VLAN header where the
3101 * TPID is ETH_P_SJA1105, and the VLAN ID is the port pvid.
3103 ds->vlan_filtering_is_global = true;
3104 ds->untag_bridge_pvid = true;
3105 /* tag_8021q has 3 bits for the VBID, and the value 0 is reserved */
3106 ds->max_num_bridges = 7;
3108 /* Advertise the 8 egress queues */
3109 ds->num_tx_queues = SJA1105_NUM_TC;
3111 ds->mtu_enforcement_ingress = true;
3112 ds->assisted_learning_on_cpu_port = true;
3116 out_devlink_teardown:
3117 sja1105_devlink_teardown(ds);
3118 out_mdiobus_unregister:
3119 sja1105_mdiobus_unregister(ds);
3120 out_ptp_clock_unregister:
3121 sja1105_ptp_clock_unregister(ds);
3122 out_flower_teardown:
3123 sja1105_flower_teardown(ds);
3124 sja1105_tas_teardown(ds);
3125 out_static_config_free:
3126 sja1105_static_config_free(&priv->static_config);
3131 static void sja1105_teardown(struct dsa_switch *ds)
3133 struct sja1105_private *priv = ds->priv;
3136 dsa_tag_8021q_unregister(ds);
3139 sja1105_devlink_teardown(ds);
3140 sja1105_mdiobus_unregister(ds);
3141 sja1105_ptp_clock_unregister(ds);
3142 sja1105_flower_teardown(ds);
3143 sja1105_tas_teardown(ds);
3144 sja1105_static_config_free(&priv->static_config);
3147 static const struct dsa_switch_ops sja1105_switch_ops = {
3148 .get_tag_protocol = sja1105_get_tag_protocol,
3149 .connect_tag_protocol = sja1105_connect_tag_protocol,
3150 .setup = sja1105_setup,
3151 .teardown = sja1105_teardown,
3152 .set_ageing_time = sja1105_set_ageing_time,
3153 .port_change_mtu = sja1105_change_mtu,
3154 .port_max_mtu = sja1105_get_max_mtu,
3155 .phylink_validate = sja1105_phylink_validate,
3156 .phylink_mac_config = sja1105_mac_config,
3157 .phylink_mac_link_up = sja1105_mac_link_up,
3158 .phylink_mac_link_down = sja1105_mac_link_down,
3159 .get_strings = sja1105_get_strings,
3160 .get_ethtool_stats = sja1105_get_ethtool_stats,
3161 .get_sset_count = sja1105_get_sset_count,
3162 .get_ts_info = sja1105_get_ts_info,
3163 .port_fdb_dump = sja1105_fdb_dump,
3164 .port_fdb_add = sja1105_fdb_add,
3165 .port_fdb_del = sja1105_fdb_del,
3166 .port_fast_age = sja1105_fast_age,
3167 .port_bridge_join = sja1105_bridge_join,
3168 .port_bridge_leave = sja1105_bridge_leave,
3169 .port_pre_bridge_flags = sja1105_port_pre_bridge_flags,
3170 .port_bridge_flags = sja1105_port_bridge_flags,
3171 .port_stp_state_set = sja1105_bridge_stp_state_set,
3172 .port_vlan_filtering = sja1105_vlan_filtering,
3173 .port_vlan_add = sja1105_bridge_vlan_add,
3174 .port_vlan_del = sja1105_bridge_vlan_del,
3175 .port_mdb_add = sja1105_mdb_add,
3176 .port_mdb_del = sja1105_mdb_del,
3177 .port_hwtstamp_get = sja1105_hwtstamp_get,
3178 .port_hwtstamp_set = sja1105_hwtstamp_set,
3179 .port_rxtstamp = sja1105_port_rxtstamp,
3180 .port_txtstamp = sja1105_port_txtstamp,
3181 .port_setup_tc = sja1105_port_setup_tc,
3182 .port_mirror_add = sja1105_mirror_add,
3183 .port_mirror_del = sja1105_mirror_del,
3184 .port_policer_add = sja1105_port_policer_add,
3185 .port_policer_del = sja1105_port_policer_del,
3186 .cls_flower_add = sja1105_cls_flower_add,
3187 .cls_flower_del = sja1105_cls_flower_del,
3188 .cls_flower_stats = sja1105_cls_flower_stats,
3189 .devlink_info_get = sja1105_devlink_info_get,
3190 .tag_8021q_vlan_add = sja1105_dsa_8021q_vlan_add,
3191 .tag_8021q_vlan_del = sja1105_dsa_8021q_vlan_del,
3192 .port_prechangeupper = sja1105_prechangeupper,
3195 static const struct of_device_id sja1105_dt_ids[];
3197 static int sja1105_check_device_id(struct sja1105_private *priv)
3199 const struct sja1105_regs *regs = priv->info->regs;
3200 u8 prod_id[SJA1105_SIZE_DEVICE_ID] = {0};
3201 struct device *dev = &priv->spidev->dev;
3202 const struct of_device_id *match;
3207 rc = sja1105_xfer_u32(priv, SPI_READ, regs->device_id, &device_id,
3212 rc = sja1105_xfer_buf(priv, SPI_READ, regs->prod_id, prod_id,
3213 SJA1105_SIZE_DEVICE_ID);
3217 sja1105_unpack(prod_id, &part_no, 19, 4, SJA1105_SIZE_DEVICE_ID);
3219 for (match = sja1105_dt_ids; match->compatible[0]; match++) {
3220 const struct sja1105_info *info = match->data;
3222 /* Is what's been probed in our match table at all? */
3223 if (info->device_id != device_id || info->part_no != part_no)
3226 /* But is it what's in the device tree? */
3227 if (priv->info->device_id != device_id ||
3228 priv->info->part_no != part_no) {
3229 dev_warn(dev, "Device tree specifies chip %s but found %s, please fix it!\n",
3230 priv->info->name, info->name);
3231 /* It isn't. No problem, pick that up. */
3238 dev_err(dev, "Unexpected {device ID, part number}: 0x%x 0x%llx\n",
3239 device_id, part_no);
3244 static int sja1105_probe(struct spi_device *spi)
3246 struct device *dev = &spi->dev;
3247 struct sja1105_private *priv;
3248 size_t max_xfer, max_msg;
3249 struct dsa_switch *ds;
3252 if (!dev->of_node) {
3253 dev_err(dev, "No DTS bindings for SJA1105 driver\n");
3257 rc = sja1105_hw_reset(dev, 1, 1);
3261 priv = devm_kzalloc(dev, sizeof(struct sja1105_private), GFP_KERNEL);
3265 /* Populate our driver private structure (priv) based on
3266 * the device tree node that was probed (spi)
3269 spi_set_drvdata(spi, priv);
3271 /* Configure the SPI bus */
3272 spi->bits_per_word = 8;
3273 rc = spi_setup(spi);
3275 dev_err(dev, "Could not init SPI\n");
3279 /* In sja1105_xfer, we send spi_messages composed of two spi_transfers:
3280 * a small one for the message header and another one for the current
3281 * chunk of the packed buffer.
3282 * Check that the restrictions imposed by the SPI controller are
3283 * respected: the chunk buffer is smaller than the max transfer size,
3284 * and the total length of the chunk plus its message header is smaller
3285 * than the max message size.
3286 * We do that during probe time since the maximum transfer size is a
3287 * runtime invariant.
3289 max_xfer = spi_max_transfer_size(spi);
3290 max_msg = spi_max_message_size(spi);
3292 /* We need to send at least one 64-bit word of SPI payload per message
3293 * in order to be able to make useful progress.
3295 if (max_msg < SJA1105_SIZE_SPI_MSG_HEADER + 8) {
3296 dev_err(dev, "SPI master cannot send large enough buffers, aborting\n");
3300 priv->max_xfer_len = SJA1105_SIZE_SPI_MSG_MAXLEN;
3301 if (priv->max_xfer_len > max_xfer)
3302 priv->max_xfer_len = max_xfer;
3303 if (priv->max_xfer_len > max_msg - SJA1105_SIZE_SPI_MSG_HEADER)
3304 priv->max_xfer_len = max_msg - SJA1105_SIZE_SPI_MSG_HEADER;
3306 priv->info = of_device_get_match_data(dev);
3308 /* Detect hardware device */
3309 rc = sja1105_check_device_id(priv);
3311 dev_err(dev, "Device ID check failed: %d\n", rc);
3315 dev_info(dev, "Probed switch chip: %s\n", priv->info->name);
3317 ds = devm_kzalloc(dev, sizeof(*ds), GFP_KERNEL);
3322 ds->num_ports = priv->info->num_ports;
3323 ds->ops = &sja1105_switch_ops;
3327 mutex_init(&priv->ptp_data.lock);
3328 mutex_init(&priv->dynamic_config_lock);
3329 mutex_init(&priv->mgmt_lock);
3330 spin_lock_init(&priv->ts_id_lock);
3332 rc = sja1105_parse_dt(priv);
3334 dev_err(ds->dev, "Failed to parse DT: %d\n", rc);
3338 if (IS_ENABLED(CONFIG_NET_SCH_CBS)) {
3339 priv->cbs = devm_kcalloc(dev, priv->info->num_cbs_shapers,
3340 sizeof(struct sja1105_cbs_entry),
3346 return dsa_register_switch(priv->ds);
3349 static int sja1105_remove(struct spi_device *spi)
3351 struct sja1105_private *priv = spi_get_drvdata(spi);
3356 dsa_unregister_switch(priv->ds);
3358 spi_set_drvdata(spi, NULL);
3363 static void sja1105_shutdown(struct spi_device *spi)
3365 struct sja1105_private *priv = spi_get_drvdata(spi);
3370 dsa_switch_shutdown(priv->ds);
3372 spi_set_drvdata(spi, NULL);
3375 static const struct of_device_id sja1105_dt_ids[] = {
3376 { .compatible = "nxp,sja1105e", .data = &sja1105e_info },
3377 { .compatible = "nxp,sja1105t", .data = &sja1105t_info },
3378 { .compatible = "nxp,sja1105p", .data = &sja1105p_info },
3379 { .compatible = "nxp,sja1105q", .data = &sja1105q_info },
3380 { .compatible = "nxp,sja1105r", .data = &sja1105r_info },
3381 { .compatible = "nxp,sja1105s", .data = &sja1105s_info },
3382 { .compatible = "nxp,sja1110a", .data = &sja1110a_info },
3383 { .compatible = "nxp,sja1110b", .data = &sja1110b_info },
3384 { .compatible = "nxp,sja1110c", .data = &sja1110c_info },
3385 { .compatible = "nxp,sja1110d", .data = &sja1110d_info },
3388 MODULE_DEVICE_TABLE(of, sja1105_dt_ids);
3390 static struct spi_driver sja1105_driver = {
3393 .owner = THIS_MODULE,
3394 .of_match_table = of_match_ptr(sja1105_dt_ids),
3396 .probe = sja1105_probe,
3397 .remove = sja1105_remove,
3398 .shutdown = sja1105_shutdown,
3401 module_spi_driver(sja1105_driver);
3403 MODULE_AUTHOR("Vladimir Oltean <olteanv@gmail.com>");
3404 MODULE_AUTHOR("Georg Waibel <georg.waibel@sensor-technik.de>");
3405 MODULE_DESCRIPTION("SJA1105 Driver");
3406 MODULE_LICENSE("GPL v2");