1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 * Microsemi Ocelot Switch driver
5 * Copyright (c) 2017 Microsemi Corporation
7 #include <linux/dsa/ocelot.h>
8 #include <linux/if_bridge.h>
9 #include <soc/mscc/ocelot_vcap.h>
11 #include "ocelot_vcap.h"
13 #define TABLE_UPDATE_SLEEP_US 10
14 #define TABLE_UPDATE_TIMEOUT_US 100000
16 struct ocelot_mact_entry {
19 enum macaccess_entry_type type;
22 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
24 return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
27 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
31 return readx_poll_timeout(ocelot_mact_read_macaccess,
33 (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) ==
35 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
38 static void ocelot_mact_select(struct ocelot *ocelot,
39 const unsigned char mac[ETH_ALEN],
42 u32 macl = 0, mach = 0;
44 /* Set the MAC address to handle and the vlan associated in a format
45 * understood by the hardware.
55 ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA);
56 ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA);
60 int ocelot_mact_learn(struct ocelot *ocelot, int port,
61 const unsigned char mac[ETH_ALEN],
62 unsigned int vid, enum macaccess_entry_type type)
64 u32 cmd = ANA_TABLES_MACACCESS_VALID |
65 ANA_TABLES_MACACCESS_DEST_IDX(port) |
66 ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
67 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN);
68 unsigned int mc_ports;
70 /* Set MAC_CPU_COPY if the CPU port is used by a multicast entry */
71 if (type == ENTRYTYPE_MACv4)
72 mc_ports = (mac[1] << 8) | mac[2];
73 else if (type == ENTRYTYPE_MACv6)
74 mc_ports = (mac[0] << 8) | mac[1];
78 if (mc_ports & BIT(ocelot->num_phys_ports))
79 cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY;
81 ocelot_mact_select(ocelot, mac, vid);
83 /* Issue a write command */
84 ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS);
86 return ocelot_mact_wait_for_completion(ocelot);
88 EXPORT_SYMBOL(ocelot_mact_learn);
90 int ocelot_mact_forget(struct ocelot *ocelot,
91 const unsigned char mac[ETH_ALEN], unsigned int vid)
93 ocelot_mact_select(ocelot, mac, vid);
95 /* Issue a forget command */
97 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
98 ANA_TABLES_MACACCESS);
100 return ocelot_mact_wait_for_completion(ocelot);
102 EXPORT_SYMBOL(ocelot_mact_forget);
104 static void ocelot_mact_init(struct ocelot *ocelot)
106 /* Configure the learning mode entries attributes:
107 * - Do not copy the frame to the CPU extraction queues.
108 * - Use the vlan and mac_cpoy for dmac lookup.
110 ocelot_rmw(ocelot, 0,
111 ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS
112 | ANA_AGENCTRL_LEARN_FWD_KILL
113 | ANA_AGENCTRL_LEARN_IGNORE_VLAN,
116 /* Clear the MAC table */
117 ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
120 static void ocelot_vcap_enable(struct ocelot *ocelot, int port)
122 ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA |
123 ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa),
124 ANA_PORT_VCAP_S2_CFG, port);
126 ocelot_write_gix(ocelot, ANA_PORT_VCAP_CFG_S1_ENA,
127 ANA_PORT_VCAP_CFG, port);
129 ocelot_rmw_gix(ocelot, REW_PORT_CFG_ES0_EN,
134 static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot)
136 return ocelot_read(ocelot, ANA_TABLES_VLANACCESS);
139 static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
143 return readx_poll_timeout(ocelot_vlant_read_vlanaccess,
146 (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) ==
147 ANA_TABLES_VLANACCESS_CMD_IDLE,
148 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
151 static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
153 /* Select the VID to configure */
154 ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid),
155 ANA_TABLES_VLANTIDX);
156 /* Set the vlan port members mask and issue a write command */
157 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) |
158 ANA_TABLES_VLANACCESS_CMD_WRITE,
159 ANA_TABLES_VLANACCESS);
161 return ocelot_vlant_wait_for_completion(ocelot);
164 static void ocelot_port_set_native_vlan(struct ocelot *ocelot, int port,
165 struct ocelot_vlan native_vlan)
167 struct ocelot_port *ocelot_port = ocelot->ports[port];
170 ocelot_port->native_vlan = native_vlan;
172 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_VID(native_vlan.vid),
173 REW_PORT_VLAN_CFG_PORT_VID_M,
174 REW_PORT_VLAN_CFG, port);
176 if (ocelot_port->vlan_aware) {
177 if (native_vlan.valid)
178 /* Tag all frames except when VID == DEFAULT_VLAN */
179 val = REW_TAG_CFG_TAG_CFG(1);
182 val = REW_TAG_CFG_TAG_CFG(3);
184 /* Port tagging disabled. */
185 val = REW_TAG_CFG_TAG_CFG(0);
187 ocelot_rmw_gix(ocelot, val,
188 REW_TAG_CFG_TAG_CFG_M,
192 /* Default vlan to clasify for untagged frames (may be zero) */
193 static void ocelot_port_set_pvid(struct ocelot *ocelot, int port,
194 struct ocelot_vlan pvid_vlan)
196 struct ocelot_port *ocelot_port = ocelot->ports[port];
199 ocelot_port->pvid_vlan = pvid_vlan;
201 if (!ocelot_port->vlan_aware)
204 ocelot_rmw_gix(ocelot,
205 ANA_PORT_VLAN_CFG_VLAN_VID(pvid_vlan.vid),
206 ANA_PORT_VLAN_CFG_VLAN_VID_M,
207 ANA_PORT_VLAN_CFG, port);
209 /* If there's no pvid, we should drop not only untagged traffic (which
210 * happens automatically), but also 802.1p traffic which gets
211 * classified to VLAN 0, but that is always in our RX filter, so it
212 * would get accepted were it not for this setting.
214 if (!pvid_vlan.valid && ocelot_port->vlan_aware)
215 val = ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
216 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA;
218 ocelot_rmw_gix(ocelot, val,
219 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
220 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA,
221 ANA_PORT_DROP_CFG, port);
224 int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
227 struct ocelot_vcap_block *block = &ocelot->block[VCAP_IS1];
228 struct ocelot_port *ocelot_port = ocelot->ports[port];
229 struct ocelot_vcap_filter *filter;
232 list_for_each_entry(filter, &block->rules, list) {
233 if (filter->ingress_port_mask & BIT(port) &&
234 filter->action.vid_replace_ena) {
236 "Cannot change VLAN state with vlan modify rules active\n");
241 ocelot_port->vlan_aware = vlan_aware;
244 val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
245 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1);
248 ocelot_rmw_gix(ocelot, val,
249 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
250 ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M,
251 ANA_PORT_VLAN_CFG, port);
253 ocelot_port_set_pvid(ocelot, port, ocelot_port->pvid_vlan);
254 ocelot_port_set_native_vlan(ocelot, port, ocelot_port->native_vlan);
258 EXPORT_SYMBOL(ocelot_port_vlan_filtering);
260 int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid,
263 struct ocelot_port *ocelot_port = ocelot->ports[port];
265 /* Deny changing the native VLAN, but always permit deleting it */
266 if (untagged && ocelot_port->native_vlan.vid != vid &&
267 ocelot_port->native_vlan.valid) {
269 "Port already has a native VLAN: %d\n",
270 ocelot_port->native_vlan.vid);
276 EXPORT_SYMBOL(ocelot_vlan_prepare);
278 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
283 /* Make the port a member of the VLAN */
284 ocelot->vlan_mask[vid] |= BIT(port);
285 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
289 /* Default ingress vlan classification */
291 struct ocelot_vlan pvid_vlan;
294 pvid_vlan.valid = true;
295 ocelot_port_set_pvid(ocelot, port, pvid_vlan);
298 /* Untagged egress vlan clasification */
300 struct ocelot_vlan native_vlan;
302 native_vlan.vid = vid;
303 native_vlan.valid = true;
304 ocelot_port_set_native_vlan(ocelot, port, native_vlan);
309 EXPORT_SYMBOL(ocelot_vlan_add);
311 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid)
313 struct ocelot_port *ocelot_port = ocelot->ports[port];
316 /* Stop the port from being a member of the vlan */
317 ocelot->vlan_mask[vid] &= ~BIT(port);
318 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
323 if (ocelot_port->pvid_vlan.vid == vid) {
324 struct ocelot_vlan pvid_vlan = {0};
326 ocelot_port_set_pvid(ocelot, port, pvid_vlan);
330 if (ocelot_port->native_vlan.vid == vid) {
331 struct ocelot_vlan native_vlan = {0};
333 ocelot_port_set_native_vlan(ocelot, port, native_vlan);
338 EXPORT_SYMBOL(ocelot_vlan_del);
340 static void ocelot_vlan_init(struct ocelot *ocelot)
344 /* Clear VLAN table, by default all ports are members of all VLANs */
345 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
346 ANA_TABLES_VLANACCESS);
347 ocelot_vlant_wait_for_completion(ocelot);
349 /* Configure the port VLAN memberships */
350 for (vid = 1; vid < VLAN_N_VID; vid++) {
351 ocelot->vlan_mask[vid] = 0;
352 ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
355 /* Because VLAN filtering is enabled, we need VID 0 to get untagged
356 * traffic. It is added automatically if 8021q module is loaded, but
357 * we can't rely on it since module may be not loaded.
359 ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0);
360 ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]);
362 /* Set vlan ingress filter mask to all ports but the CPU port by
365 ocelot_write(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
368 for (port = 0; port < ocelot->num_phys_ports; port++) {
369 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
370 ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port);
374 static u32 ocelot_read_eq_avail(struct ocelot *ocelot, int port)
376 return ocelot_read_rix(ocelot, QSYS_SW_STATUS, port);
379 int ocelot_port_flush(struct ocelot *ocelot, int port)
383 /* Disable dequeuing from the egress queues */
384 ocelot_rmw_rix(ocelot, QSYS_PORT_MODE_DEQUEUE_DIS,
385 QSYS_PORT_MODE_DEQUEUE_DIS,
386 QSYS_PORT_MODE, port);
388 /* Disable flow control */
389 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0);
391 /* Disable priority flow control */
392 ocelot_fields_write(ocelot, port,
393 QSYS_SWITCH_PORT_MODE_TX_PFC_ENA, 0);
395 /* Wait at least the time it takes to receive a frame of maximum length
397 * Worst-case delays for 10 kilobyte jumbo frames are:
399 * 800 μs on a 100M port
400 * 80 μs on a 1G port
401 * 32 μs on a 2.5G port
403 usleep_range(8000, 10000);
405 /* Disable half duplex backpressure. */
406 ocelot_rmw_rix(ocelot, 0, SYS_FRONT_PORT_MODE_HDX_MODE,
407 SYS_FRONT_PORT_MODE, port);
409 /* Flush the queues associated with the port. */
410 ocelot_rmw_gix(ocelot, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG_FLUSH_ENA,
413 /* Enable dequeuing from the egress queues. */
414 ocelot_rmw_rix(ocelot, 0, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE,
417 /* Wait until flushing is complete. */
418 err = read_poll_timeout(ocelot_read_eq_avail, val, !val,
419 100, 2000000, false, ocelot, port);
421 /* Clear flushing again. */
422 ocelot_rmw_gix(ocelot, 0, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG, port);
426 EXPORT_SYMBOL(ocelot_port_flush);
428 void ocelot_adjust_link(struct ocelot *ocelot, int port,
429 struct phy_device *phydev)
431 struct ocelot_port *ocelot_port = ocelot->ports[port];
434 switch (phydev->speed) {
436 speed = OCELOT_SPEED_10;
439 speed = OCELOT_SPEED_100;
442 speed = OCELOT_SPEED_1000;
443 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
446 speed = OCELOT_SPEED_2500;
447 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
450 dev_err(ocelot->dev, "Unsupported PHY speed on port %d: %d\n",
451 port, phydev->speed);
455 phy_print_status(phydev);
460 /* Only full duplex supported for now */
461 ocelot_port_writel(ocelot_port, DEV_MAC_MODE_CFG_FDX_ENA |
462 mode, DEV_MAC_MODE_CFG);
464 /* Disable HDX fast control */
465 ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
468 /* SGMII only for now */
469 ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
471 ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
474 ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
476 /* No aneg on SGMII */
477 ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
480 ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
482 /* Enable MAC module */
483 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
484 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
486 /* Take MAC, Port, Phy (intern) and PCS (SGMII/Serdes) clock out of
488 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(speed),
492 ocelot_write_gix(ocelot, ANA_PFC_PFC_CFG_FC_LINK_SPEED(speed),
493 ANA_PFC_PFC_CFG, port);
495 /* Core: Enable port for frame transfer */
496 ocelot_fields_write(ocelot, port,
497 QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
500 ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
501 SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA |
502 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
503 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
504 SYS_MAC_FC_CFG_FC_LINK_SPEED(speed),
505 SYS_MAC_FC_CFG, port);
506 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
508 EXPORT_SYMBOL(ocelot_adjust_link);
510 void ocelot_port_enable(struct ocelot *ocelot, int port,
511 struct phy_device *phy)
513 /* Enable receiving frames on the port, and activate auto-learning of
516 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
517 ANA_PORT_PORT_CFG_RECV_ENA |
518 ANA_PORT_PORT_CFG_PORTID_VAL(port),
519 ANA_PORT_PORT_CFG, port);
521 EXPORT_SYMBOL(ocelot_port_enable);
523 void ocelot_port_disable(struct ocelot *ocelot, int port)
525 struct ocelot_port *ocelot_port = ocelot->ports[port];
527 ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG);
528 ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0);
530 EXPORT_SYMBOL(ocelot_port_disable);
532 void ocelot_port_add_txtstamp_skb(struct ocelot *ocelot, int port,
533 struct sk_buff *clone)
535 struct ocelot_port *ocelot_port = ocelot->ports[port];
537 spin_lock(&ocelot_port->ts_id_lock);
539 skb_shinfo(clone)->tx_flags |= SKBTX_IN_PROGRESS;
540 /* Store timestamp ID in cb[0] of sk_buff */
541 clone->cb[0] = ocelot_port->ts_id;
542 ocelot_port->ts_id = (ocelot_port->ts_id + 1) % 4;
543 skb_queue_tail(&ocelot_port->tx_skbs, clone);
545 spin_unlock(&ocelot_port->ts_id_lock);
547 EXPORT_SYMBOL(ocelot_port_add_txtstamp_skb);
549 static void ocelot_get_hwtimestamp(struct ocelot *ocelot,
550 struct timespec64 *ts)
555 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
557 /* Read current PTP time to get seconds */
558 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
560 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
561 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE);
562 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
563 ts->tv_sec = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN);
565 /* Read packet HW timestamp from FIFO */
566 val = ocelot_read(ocelot, SYS_PTP_TXSTAMP);
567 ts->tv_nsec = SYS_PTP_TXSTAMP_PTP_TXSTAMP(val);
569 /* Sec has incremented since the ts was registered */
570 if ((ts->tv_sec & 0x1) != !!(val & SYS_PTP_TXSTAMP_PTP_TXSTAMP_SEC))
573 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
576 void ocelot_get_txtstamp(struct ocelot *ocelot)
578 int budget = OCELOT_PTP_QUEUE_SZ;
581 struct sk_buff *skb, *skb_tmp, *skb_match = NULL;
582 struct skb_shared_hwtstamps shhwtstamps;
583 struct ocelot_port *port;
584 struct timespec64 ts;
588 val = ocelot_read(ocelot, SYS_PTP_STATUS);
590 /* Check if a timestamp can be retrieved */
591 if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD))
594 WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL);
596 /* Retrieve the ts ID and Tx port */
597 id = SYS_PTP_STATUS_PTP_MESS_ID_X(val);
598 txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val);
600 /* Retrieve its associated skb */
601 port = ocelot->ports[txport];
603 spin_lock_irqsave(&port->tx_skbs.lock, flags);
605 skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
606 if (skb->cb[0] != id)
608 __skb_unlink(skb, &port->tx_skbs);
613 spin_unlock_irqrestore(&port->tx_skbs.lock, flags);
615 /* Get the h/w timestamp */
616 ocelot_get_hwtimestamp(ocelot, &ts);
618 if (unlikely(!skb_match))
621 /* Set the timestamp into the skb */
622 memset(&shhwtstamps, 0, sizeof(shhwtstamps));
623 shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
624 skb_complete_tx_timestamp(skb_match, &shhwtstamps);
627 ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT);
630 EXPORT_SYMBOL(ocelot_get_txtstamp);
632 bool ocelot_can_inject(struct ocelot *ocelot, int grp)
634 u32 val = ocelot_read(ocelot, QS_INJ_STATUS);
636 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))))
638 if (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp)))
643 EXPORT_SYMBOL(ocelot_can_inject);
645 void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
646 u32 rew_op, struct sk_buff *skb)
648 u32 ifh[OCELOT_TAG_LEN / 4] = {0};
649 unsigned int i, count, last;
651 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
652 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
654 ocelot_ifh_set_bypass(ifh, 1);
655 ocelot_ifh_set_dest(ifh, BIT(port));
656 ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C);
657 ocelot_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
658 ocelot_ifh_set_rew_op(ifh, rew_op);
660 for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
661 ocelot_write_rix(ocelot, ifh[i], QS_INJ_WR, grp);
663 count = DIV_ROUND_UP(skb->len, 4);
665 for (i = 0; i < count; i++)
666 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);
669 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
670 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
674 /* Indicate EOF and valid bytes in last word */
675 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
676 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
681 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
682 skb_tx_timestamp(skb);
684 skb->dev->stats.tx_packets++;
685 skb->dev->stats.tx_bytes += skb->len;
687 EXPORT_SYMBOL(ocelot_port_inject_frame);
689 int ocelot_fdb_add(struct ocelot *ocelot, int port,
690 const unsigned char *addr, u16 vid)
694 if (port == ocelot->npi)
697 return ocelot_mact_learn(ocelot, pgid, addr, vid, ENTRYTYPE_LOCKED);
699 EXPORT_SYMBOL(ocelot_fdb_add);
701 int ocelot_fdb_del(struct ocelot *ocelot, int port,
702 const unsigned char *addr, u16 vid)
704 return ocelot_mact_forget(ocelot, addr, vid);
706 EXPORT_SYMBOL(ocelot_fdb_del);
708 int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
709 bool is_static, void *data)
711 struct ocelot_dump_ctx *dump = data;
712 u32 portid = NETLINK_CB(dump->cb->skb).portid;
713 u32 seq = dump->cb->nlh->nlmsg_seq;
714 struct nlmsghdr *nlh;
717 if (dump->idx < dump->cb->args[2])
720 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
721 sizeof(*ndm), NLM_F_MULTI);
725 ndm = nlmsg_data(nlh);
726 ndm->ndm_family = AF_BRIDGE;
729 ndm->ndm_flags = NTF_SELF;
731 ndm->ndm_ifindex = dump->dev->ifindex;
732 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
734 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
735 goto nla_put_failure;
737 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
738 goto nla_put_failure;
740 nlmsg_end(dump->skb, nlh);
747 nlmsg_cancel(dump->skb, nlh);
750 EXPORT_SYMBOL(ocelot_port_fdb_do_dump);
752 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
753 struct ocelot_mact_entry *entry)
755 u32 val, dst, macl, mach;
758 /* Set row and column to read from */
759 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
760 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
762 /* Issue a read command */
764 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
765 ANA_TABLES_MACACCESS);
767 if (ocelot_mact_wait_for_completion(ocelot))
770 /* Read the entry flags */
771 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
772 if (!(val & ANA_TABLES_MACACCESS_VALID))
775 /* If the entry read has another port configured as its destination,
778 dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
782 /* Get the entry's MAC address and VLAN id */
783 macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA);
784 mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA);
786 mac[0] = (mach >> 8) & 0xff;
787 mac[1] = (mach >> 0) & 0xff;
788 mac[2] = (macl >> 24) & 0xff;
789 mac[3] = (macl >> 16) & 0xff;
790 mac[4] = (macl >> 8) & 0xff;
791 mac[5] = (macl >> 0) & 0xff;
793 entry->vid = (mach >> 16) & 0xfff;
794 ether_addr_copy(entry->mac, mac);
799 int ocelot_fdb_dump(struct ocelot *ocelot, int port,
800 dsa_fdb_dump_cb_t *cb, void *data)
804 /* Loop through all the mac tables entries. */
805 for (i = 0; i < ocelot->num_mact_rows; i++) {
806 for (j = 0; j < 4; j++) {
807 struct ocelot_mact_entry entry;
811 ret = ocelot_mact_read(ocelot, port, i, j, &entry);
812 /* If the entry is invalid (wrong port, invalid...),
820 is_static = (entry.type == ENTRYTYPE_LOCKED);
822 ret = cb(entry.mac, entry.vid, is_static, data);
830 EXPORT_SYMBOL(ocelot_fdb_dump);
832 int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr)
834 return copy_to_user(ifr->ifr_data, &ocelot->hwtstamp_config,
835 sizeof(ocelot->hwtstamp_config)) ? -EFAULT : 0;
837 EXPORT_SYMBOL(ocelot_hwstamp_get);
839 int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr)
841 struct ocelot_port *ocelot_port = ocelot->ports[port];
842 struct hwtstamp_config cfg;
844 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
847 /* reserved for future extensions */
851 /* Tx type sanity check */
852 switch (cfg.tx_type) {
854 ocelot_port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP;
856 case HWTSTAMP_TX_ONESTEP_SYNC:
857 /* IFH_REW_OP_ONE_STEP_PTP updates the correctional field, we
858 * need to update the origin time.
860 ocelot_port->ptp_cmd = IFH_REW_OP_ORIGIN_PTP;
862 case HWTSTAMP_TX_OFF:
863 ocelot_port->ptp_cmd = 0;
869 mutex_lock(&ocelot->ptp_lock);
871 switch (cfg.rx_filter) {
872 case HWTSTAMP_FILTER_NONE:
874 case HWTSTAMP_FILTER_ALL:
875 case HWTSTAMP_FILTER_SOME:
876 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
877 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
878 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
879 case HWTSTAMP_FILTER_NTP_ALL:
880 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
881 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
882 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
883 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
884 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
885 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
886 case HWTSTAMP_FILTER_PTP_V2_EVENT:
887 case HWTSTAMP_FILTER_PTP_V2_SYNC:
888 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
889 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
892 mutex_unlock(&ocelot->ptp_lock);
896 /* Commit back the result & save it */
897 memcpy(&ocelot->hwtstamp_config, &cfg, sizeof(cfg));
898 mutex_unlock(&ocelot->ptp_lock);
900 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
902 EXPORT_SYMBOL(ocelot_hwstamp_set);
904 void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data)
908 if (sset != ETH_SS_STATS)
911 for (i = 0; i < ocelot->num_stats; i++)
912 memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
915 EXPORT_SYMBOL(ocelot_get_strings);
917 static void ocelot_update_stats(struct ocelot *ocelot)
921 mutex_lock(&ocelot->stats_lock);
923 for (i = 0; i < ocelot->num_phys_ports; i++) {
924 /* Configure the port to read the stats from */
925 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG);
927 for (j = 0; j < ocelot->num_stats; j++) {
929 unsigned int idx = i * ocelot->num_stats + j;
931 val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS,
932 ocelot->stats_layout[j].offset);
934 if (val < (ocelot->stats[idx] & U32_MAX))
935 ocelot->stats[idx] += (u64)1 << 32;
937 ocelot->stats[idx] = (ocelot->stats[idx] &
938 ~(u64)U32_MAX) + val;
942 mutex_unlock(&ocelot->stats_lock);
945 static void ocelot_check_stats_work(struct work_struct *work)
947 struct delayed_work *del_work = to_delayed_work(work);
948 struct ocelot *ocelot = container_of(del_work, struct ocelot,
951 ocelot_update_stats(ocelot);
953 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
954 OCELOT_STATS_CHECK_DELAY);
957 void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data)
961 /* check and update now */
962 ocelot_update_stats(ocelot);
964 /* Copy all counters */
965 for (i = 0; i < ocelot->num_stats; i++)
966 *data++ = ocelot->stats[port * ocelot->num_stats + i];
968 EXPORT_SYMBOL(ocelot_get_ethtool_stats);
970 int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset)
972 if (sset != ETH_SS_STATS)
975 return ocelot->num_stats;
977 EXPORT_SYMBOL(ocelot_get_sset_count);
979 int ocelot_get_ts_info(struct ocelot *ocelot, int port,
980 struct ethtool_ts_info *info)
982 info->phc_index = ocelot->ptp_clock ?
983 ptp_clock_index(ocelot->ptp_clock) : -1;
984 if (info->phc_index == -1) {
985 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
986 SOF_TIMESTAMPING_RX_SOFTWARE |
987 SOF_TIMESTAMPING_SOFTWARE;
990 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
991 SOF_TIMESTAMPING_RX_SOFTWARE |
992 SOF_TIMESTAMPING_SOFTWARE |
993 SOF_TIMESTAMPING_TX_HARDWARE |
994 SOF_TIMESTAMPING_RX_HARDWARE |
995 SOF_TIMESTAMPING_RAW_HARDWARE;
996 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) |
997 BIT(HWTSTAMP_TX_ONESTEP_SYNC);
998 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
1002 EXPORT_SYMBOL(ocelot_get_ts_info);
1004 static u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond,
1005 bool only_active_ports)
1010 for (port = 0; port < ocelot->num_phys_ports; port++) {
1011 struct ocelot_port *ocelot_port = ocelot->ports[port];
1016 if (ocelot_port->bond == bond) {
1017 if (only_active_ports && !ocelot_port->lag_tx_active)
1027 static u32 ocelot_get_dsa_8021q_cpu_mask(struct ocelot *ocelot)
1032 for (port = 0; port < ocelot->num_phys_ports; port++) {
1033 struct ocelot_port *ocelot_port = ocelot->ports[port];
1038 if (ocelot_port->is_dsa_8021q_cpu)
1045 void ocelot_apply_bridge_fwd_mask(struct ocelot *ocelot)
1047 unsigned long cpu_fwd_mask;
1050 /* If a DSA tag_8021q CPU exists, it needs to be included in the
1051 * regular forwarding path of the front ports regardless of whether
1052 * those are bridged or standalone.
1053 * If DSA tag_8021q is not used, this returns 0, which is fine because
1054 * the hardware-based CPU port module can be a destination for packets
1055 * even if it isn't part of PGID_SRC.
1057 cpu_fwd_mask = ocelot_get_dsa_8021q_cpu_mask(ocelot);
1059 /* Apply FWD mask. The loop is needed to add/remove the current port as
1060 * a source for the other ports.
1062 for (port = 0; port < ocelot->num_phys_ports; port++) {
1063 struct ocelot_port *ocelot_port = ocelot->ports[port];
1067 /* Unused ports can't send anywhere */
1069 } else if (ocelot_port->is_dsa_8021q_cpu) {
1070 /* The DSA tag_8021q CPU ports need to be able to
1071 * forward packets to all other ports except for
1074 mask = GENMASK(ocelot->num_phys_ports - 1, 0);
1075 mask &= ~cpu_fwd_mask;
1076 } else if (ocelot->bridge_fwd_mask & BIT(port)) {
1077 struct net_device *bond = ocelot_port->bond;
1079 mask = ocelot->bridge_fwd_mask & ~BIT(port);
1081 mask &= ~ocelot_get_bond_mask(ocelot, bond,
1085 /* Standalone ports forward only to DSA tag_8021q CPU
1086 * ports (if those exist), or to the hardware CPU port
1089 mask = cpu_fwd_mask;
1092 ocelot_write_rix(ocelot, mask, ANA_PGID_PGID, PGID_SRC + port);
1095 EXPORT_SYMBOL(ocelot_apply_bridge_fwd_mask);
1097 void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state)
1099 struct ocelot_port *ocelot_port = ocelot->ports[port];
1102 if (!(BIT(port) & ocelot->bridge_mask))
1105 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, port);
1108 case BR_STATE_FORWARDING:
1109 ocelot->bridge_fwd_mask |= BIT(port);
1111 case BR_STATE_LEARNING:
1112 if (ocelot_port->learn_ena)
1113 port_cfg |= ANA_PORT_PORT_CFG_LEARN_ENA;
1117 port_cfg &= ~ANA_PORT_PORT_CFG_LEARN_ENA;
1118 ocelot->bridge_fwd_mask &= ~BIT(port);
1122 ocelot_write_gix(ocelot, port_cfg, ANA_PORT_PORT_CFG, port);
1124 ocelot_apply_bridge_fwd_mask(ocelot);
1126 EXPORT_SYMBOL(ocelot_bridge_stp_state_set);
1128 void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs)
1130 unsigned int age_period = ANA_AUTOAGE_AGE_PERIOD(msecs / 2000);
1132 /* Setting AGE_PERIOD to zero effectively disables automatic aging,
1133 * which is clearly not what our intention is. So avoid that.
1138 ocelot_rmw(ocelot, age_period, ANA_AUTOAGE_AGE_PERIOD_M, ANA_AUTOAGE);
1140 EXPORT_SYMBOL(ocelot_set_ageing_time);
1142 static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
1143 const unsigned char *addr,
1146 struct ocelot_multicast *mc;
1148 list_for_each_entry(mc, &ocelot->multicast, list) {
1149 if (ether_addr_equal(mc->addr, addr) && mc->vid == vid)
1156 static enum macaccess_entry_type ocelot_classify_mdb(const unsigned char *addr)
1158 if (addr[0] == 0x01 && addr[1] == 0x00 && addr[2] == 0x5e)
1159 return ENTRYTYPE_MACv4;
1160 if (addr[0] == 0x33 && addr[1] == 0x33)
1161 return ENTRYTYPE_MACv6;
1162 return ENTRYTYPE_LOCKED;
1165 static struct ocelot_pgid *ocelot_pgid_alloc(struct ocelot *ocelot, int index,
1166 unsigned long ports)
1168 struct ocelot_pgid *pgid;
1170 pgid = kzalloc(sizeof(*pgid), GFP_KERNEL);
1172 return ERR_PTR(-ENOMEM);
1174 pgid->ports = ports;
1175 pgid->index = index;
1176 refcount_set(&pgid->refcount, 1);
1177 list_add_tail(&pgid->list, &ocelot->pgids);
1182 static void ocelot_pgid_free(struct ocelot *ocelot, struct ocelot_pgid *pgid)
1184 if (!refcount_dec_and_test(&pgid->refcount))
1187 list_del(&pgid->list);
1191 static struct ocelot_pgid *ocelot_mdb_get_pgid(struct ocelot *ocelot,
1192 const struct ocelot_multicast *mc)
1194 struct ocelot_pgid *pgid;
1197 /* According to VSC7514 datasheet 3.9.1.5 IPv4 Multicast Entries and
1198 * 3.9.1.6 IPv6 Multicast Entries, "Instead of a lookup in the
1199 * destination mask table (PGID), the destination set is programmed as
1200 * part of the entry MAC address.", and the DEST_IDX is set to 0.
1202 if (mc->entry_type == ENTRYTYPE_MACv4 ||
1203 mc->entry_type == ENTRYTYPE_MACv6)
1204 return ocelot_pgid_alloc(ocelot, 0, mc->ports);
1206 list_for_each_entry(pgid, &ocelot->pgids, list) {
1207 /* When searching for a nonreserved multicast PGID, ignore the
1208 * dummy PGID of zero that we have for MACv4/MACv6 entries
1210 if (pgid->index && pgid->ports == mc->ports) {
1211 refcount_inc(&pgid->refcount);
1216 /* Search for a free index in the nonreserved multicast PGID area */
1217 for_each_nonreserved_multicast_dest_pgid(ocelot, index) {
1220 list_for_each_entry(pgid, &ocelot->pgids, list) {
1221 if (pgid->index == index) {
1228 return ocelot_pgid_alloc(ocelot, index, mc->ports);
1231 return ERR_PTR(-ENOSPC);
1234 static void ocelot_encode_ports_to_mdb(unsigned char *addr,
1235 struct ocelot_multicast *mc)
1237 ether_addr_copy(addr, mc->addr);
1239 if (mc->entry_type == ENTRYTYPE_MACv4) {
1241 addr[1] = mc->ports >> 8;
1242 addr[2] = mc->ports & 0xff;
1243 } else if (mc->entry_type == ENTRYTYPE_MACv6) {
1244 addr[0] = mc->ports >> 8;
1245 addr[1] = mc->ports & 0xff;
1249 int ocelot_port_mdb_add(struct ocelot *ocelot, int port,
1250 const struct switchdev_obj_port_mdb *mdb)
1252 unsigned char addr[ETH_ALEN];
1253 struct ocelot_multicast *mc;
1254 struct ocelot_pgid *pgid;
1257 if (port == ocelot->npi)
1258 port = ocelot->num_phys_ports;
1260 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1263 mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL);
1267 mc->entry_type = ocelot_classify_mdb(mdb->addr);
1268 ether_addr_copy(mc->addr, mdb->addr);
1271 list_add_tail(&mc->list, &ocelot->multicast);
1273 /* Existing entry. Clean up the current port mask from
1274 * hardware now, because we'll be modifying it.
1276 ocelot_pgid_free(ocelot, mc->pgid);
1277 ocelot_encode_ports_to_mdb(addr, mc);
1278 ocelot_mact_forget(ocelot, addr, vid);
1281 mc->ports |= BIT(port);
1283 pgid = ocelot_mdb_get_pgid(ocelot, mc);
1285 dev_err(ocelot->dev,
1286 "Cannot allocate PGID for mdb %pM vid %d\n",
1288 devm_kfree(ocelot->dev, mc);
1289 return PTR_ERR(pgid);
1293 ocelot_encode_ports_to_mdb(addr, mc);
1295 if (mc->entry_type != ENTRYTYPE_MACv4 &&
1296 mc->entry_type != ENTRYTYPE_MACv6)
1297 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID,
1300 return ocelot_mact_learn(ocelot, pgid->index, addr, vid,
1303 EXPORT_SYMBOL(ocelot_port_mdb_add);
1305 int ocelot_port_mdb_del(struct ocelot *ocelot, int port,
1306 const struct switchdev_obj_port_mdb *mdb)
1308 unsigned char addr[ETH_ALEN];
1309 struct ocelot_multicast *mc;
1310 struct ocelot_pgid *pgid;
1313 if (port == ocelot->npi)
1314 port = ocelot->num_phys_ports;
1316 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1320 ocelot_encode_ports_to_mdb(addr, mc);
1321 ocelot_mact_forget(ocelot, addr, vid);
1323 ocelot_pgid_free(ocelot, mc->pgid);
1324 mc->ports &= ~BIT(port);
1326 list_del(&mc->list);
1327 devm_kfree(ocelot->dev, mc);
1331 /* We have a PGID with fewer ports now */
1332 pgid = ocelot_mdb_get_pgid(ocelot, mc);
1334 return PTR_ERR(pgid);
1337 ocelot_encode_ports_to_mdb(addr, mc);
1339 if (mc->entry_type != ENTRYTYPE_MACv4 &&
1340 mc->entry_type != ENTRYTYPE_MACv6)
1341 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID,
1344 return ocelot_mact_learn(ocelot, pgid->index, addr, vid,
1347 EXPORT_SYMBOL(ocelot_port_mdb_del);
1349 int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
1350 struct net_device *bridge)
1352 if (!ocelot->bridge_mask) {
1353 ocelot->hw_bridge_dev = bridge;
1355 if (ocelot->hw_bridge_dev != bridge)
1356 /* This is adding the port to a second bridge, this is
1361 ocelot->bridge_mask |= BIT(port);
1365 EXPORT_SYMBOL(ocelot_port_bridge_join);
1367 int ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
1368 struct net_device *bridge)
1370 struct ocelot_vlan pvid = {0}, native_vlan = {0};
1373 ocelot->bridge_mask &= ~BIT(port);
1375 if (!ocelot->bridge_mask)
1376 ocelot->hw_bridge_dev = NULL;
1378 ret = ocelot_port_vlan_filtering(ocelot, port, false);
1382 ocelot_port_set_pvid(ocelot, port, pvid);
1383 ocelot_port_set_native_vlan(ocelot, port, native_vlan);
1387 EXPORT_SYMBOL(ocelot_port_bridge_leave);
1389 static void ocelot_set_aggr_pgids(struct ocelot *ocelot)
1391 unsigned long visited = GENMASK(ocelot->num_phys_ports - 1, 0);
1394 /* Reset destination and aggregation PGIDS */
1395 for_each_unicast_dest_pgid(ocelot, port)
1396 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
1398 for_each_aggr_pgid(ocelot, i)
1399 ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
1402 /* The visited ports bitmask holds the list of ports offloading any
1403 * bonding interface. Initially we mark all these ports as unvisited,
1404 * then every time we visit a port in this bitmask, we know that it is
1405 * the lowest numbered port, i.e. the one whose logical ID == physical
1406 * port ID == LAG ID. So we mark as visited all further ports in the
1407 * bitmask that are offloading the same bonding interface. This way,
1408 * we set up the aggregation PGIDs only once per bonding interface.
1410 for (port = 0; port < ocelot->num_phys_ports; port++) {
1411 struct ocelot_port *ocelot_port = ocelot->ports[port];
1413 if (!ocelot_port || !ocelot_port->bond)
1416 visited &= ~BIT(port);
1419 /* Now, set PGIDs for each active LAG */
1420 for (lag = 0; lag < ocelot->num_phys_ports; lag++) {
1421 struct net_device *bond = ocelot->ports[lag]->bond;
1422 int num_active_ports = 0;
1423 unsigned long bond_mask;
1426 if (!bond || (visited & BIT(lag)))
1429 bond_mask = ocelot_get_bond_mask(ocelot, bond, true);
1431 for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) {
1433 ocelot_write_rix(ocelot, bond_mask,
1434 ANA_PGID_PGID, port);
1435 aggr_idx[num_active_ports++] = port;
1438 for_each_aggr_pgid(ocelot, i) {
1441 ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i);
1443 /* Don't do division by zero if there was no active
1444 * port. Just make all aggregation codes zero.
1446 if (num_active_ports)
1447 ac |= BIT(aggr_idx[i % num_active_ports]);
1448 ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i);
1451 /* Mark all ports in the same LAG as visited to avoid applying
1452 * the same config again.
1454 for (port = lag; port < ocelot->num_phys_ports; port++) {
1455 struct ocelot_port *ocelot_port = ocelot->ports[port];
1460 if (ocelot_port->bond == bond)
1461 visited |= BIT(port);
1466 /* When offloading a bonding interface, the switch ports configured under the
1467 * same bond must have the same logical port ID, equal to the physical port ID
1468 * of the lowest numbered physical port in that bond. Otherwise, in standalone/
1469 * bridged mode, each port has a logical port ID equal to its physical port ID.
1471 static void ocelot_setup_logical_port_ids(struct ocelot *ocelot)
1475 for (port = 0; port < ocelot->num_phys_ports; port++) {
1476 struct ocelot_port *ocelot_port = ocelot->ports[port];
1477 struct net_device *bond;
1482 bond = ocelot_port->bond;
1484 int lag = __ffs(ocelot_get_bond_mask(ocelot, bond,
1487 ocelot_rmw_gix(ocelot,
1488 ANA_PORT_PORT_CFG_PORTID_VAL(lag),
1489 ANA_PORT_PORT_CFG_PORTID_VAL_M,
1490 ANA_PORT_PORT_CFG, port);
1492 ocelot_rmw_gix(ocelot,
1493 ANA_PORT_PORT_CFG_PORTID_VAL(port),
1494 ANA_PORT_PORT_CFG_PORTID_VAL_M,
1495 ANA_PORT_PORT_CFG, port);
1500 int ocelot_port_lag_join(struct ocelot *ocelot, int port,
1501 struct net_device *bond,
1502 struct netdev_lag_upper_info *info)
1504 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
1507 ocelot->ports[port]->bond = bond;
1509 ocelot_setup_logical_port_ids(ocelot);
1510 ocelot_apply_bridge_fwd_mask(ocelot);
1511 ocelot_set_aggr_pgids(ocelot);
1515 EXPORT_SYMBOL(ocelot_port_lag_join);
1517 void ocelot_port_lag_leave(struct ocelot *ocelot, int port,
1518 struct net_device *bond)
1520 ocelot->ports[port]->bond = NULL;
1522 ocelot_setup_logical_port_ids(ocelot);
1523 ocelot_apply_bridge_fwd_mask(ocelot);
1524 ocelot_set_aggr_pgids(ocelot);
1526 EXPORT_SYMBOL(ocelot_port_lag_leave);
1528 void ocelot_port_lag_change(struct ocelot *ocelot, int port, bool lag_tx_active)
1530 struct ocelot_port *ocelot_port = ocelot->ports[port];
1532 ocelot_port->lag_tx_active = lag_tx_active;
1534 /* Rebalance the LAGs */
1535 ocelot_set_aggr_pgids(ocelot);
1537 EXPORT_SYMBOL(ocelot_port_lag_change);
1539 /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu.
1540 * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG.
1541 * In the special case that it's the NPI port that we're configuring, the
1542 * length of the tag and optional prefix needs to be accounted for privately,
1543 * in order to be able to sustain communication at the requested @sdu.
1545 void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
1547 struct ocelot_port *ocelot_port = ocelot->ports[port];
1548 int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN;
1549 int pause_start, pause_stop;
1552 if (port == ocelot->npi) {
1553 maxlen += OCELOT_TAG_LEN;
1555 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT)
1556 maxlen += OCELOT_SHORT_PREFIX_LEN;
1557 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG)
1558 maxlen += OCELOT_LONG_PREFIX_LEN;
1561 ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG);
1563 /* Set Pause watermark hysteresis */
1564 pause_start = 6 * maxlen / OCELOT_BUFFER_CELL_SZ;
1565 pause_stop = 4 * maxlen / OCELOT_BUFFER_CELL_SZ;
1566 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_START,
1568 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_STOP,
1571 /* Tail dropping watermarks */
1572 atop_tot = (ocelot->packet_buffer_size - 9 * maxlen) /
1573 OCELOT_BUFFER_CELL_SZ;
1574 atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ;
1575 ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port);
1576 ocelot_write(ocelot, ocelot->ops->wm_enc(atop_tot), SYS_ATOP_TOT_CFG);
1578 EXPORT_SYMBOL(ocelot_port_set_maxlen);
1580 int ocelot_get_max_mtu(struct ocelot *ocelot, int port)
1582 int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN;
1584 if (port == ocelot->npi) {
1585 max_mtu -= OCELOT_TAG_LEN;
1587 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT)
1588 max_mtu -= OCELOT_SHORT_PREFIX_LEN;
1589 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG)
1590 max_mtu -= OCELOT_LONG_PREFIX_LEN;
1595 EXPORT_SYMBOL(ocelot_get_max_mtu);
1597 static void ocelot_port_set_learning(struct ocelot *ocelot, int port,
1600 struct ocelot_port *ocelot_port = ocelot->ports[port];
1604 val = ANA_PORT_PORT_CFG_LEARN_ENA;
1606 ocelot_rmw_gix(ocelot, val, ANA_PORT_PORT_CFG_LEARN_ENA,
1607 ANA_PORT_PORT_CFG, port);
1609 ocelot_port->learn_ena = enabled;
1612 static void ocelot_port_set_ucast_flood(struct ocelot *ocelot, int port,
1620 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_UC);
1623 static void ocelot_port_set_mcast_flood(struct ocelot *ocelot, int port,
1631 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MC);
1634 static void ocelot_port_set_bcast_flood(struct ocelot *ocelot, int port,
1642 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_BC);
1645 int ocelot_port_pre_bridge_flags(struct ocelot *ocelot, int port,
1646 struct switchdev_brport_flags flags)
1648 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
1654 EXPORT_SYMBOL(ocelot_port_pre_bridge_flags);
1656 void ocelot_port_bridge_flags(struct ocelot *ocelot, int port,
1657 struct switchdev_brport_flags flags)
1659 if (flags.mask & BR_LEARNING)
1660 ocelot_port_set_learning(ocelot, port,
1661 !!(flags.val & BR_LEARNING));
1663 if (flags.mask & BR_FLOOD)
1664 ocelot_port_set_ucast_flood(ocelot, port,
1665 !!(flags.val & BR_FLOOD));
1667 if (flags.mask & BR_MCAST_FLOOD)
1668 ocelot_port_set_mcast_flood(ocelot, port,
1669 !!(flags.val & BR_MCAST_FLOOD));
1671 if (flags.mask & BR_BCAST_FLOOD)
1672 ocelot_port_set_bcast_flood(ocelot, port,
1673 !!(flags.val & BR_BCAST_FLOOD));
1675 EXPORT_SYMBOL(ocelot_port_bridge_flags);
1677 void ocelot_init_port(struct ocelot *ocelot, int port)
1679 struct ocelot_port *ocelot_port = ocelot->ports[port];
1681 skb_queue_head_init(&ocelot_port->tx_skbs);
1682 spin_lock_init(&ocelot_port->ts_id_lock);
1684 /* Basic L2 initialization */
1687 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0
1688 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5
1690 ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5),
1693 /* Load seed (0) and set MAC HDX late collision */
1694 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) |
1695 DEV_MAC_HDX_CFG_SEED_LOAD,
1698 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
1701 /* Set Max Length and maximum tags allowed */
1702 ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN);
1703 ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
1704 DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
1705 DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA |
1706 DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
1709 /* Set SMAC of Pause frame (00:00:00:00:00:00) */
1710 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
1711 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG);
1713 /* Enable transmission of pause frames */
1714 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1);
1716 /* Drop frames with multicast source address */
1717 ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
1718 ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
1719 ANA_PORT_DROP_CFG, port);
1721 /* Set default VLAN and tag type to 8021Q. */
1722 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
1723 REW_PORT_VLAN_CFG_PORT_TPID_M,
1724 REW_PORT_VLAN_CFG, port);
1726 /* Disable source address learning for standalone mode */
1727 ocelot_port_set_learning(ocelot, port, false);
1729 /* Enable vcap lookups */
1730 ocelot_vcap_enable(ocelot, port);
1732 EXPORT_SYMBOL(ocelot_init_port);
1734 /* Configure and enable the CPU port module, which is a set of queues
1735 * accessible through register MMIO, frame DMA or Ethernet (in case
1736 * NPI mode is used).
1738 static void ocelot_cpu_port_init(struct ocelot *ocelot)
1740 int cpu = ocelot->num_phys_ports;
1742 /* The unicast destination PGID for the CPU port module is unused */
1743 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
1744 /* Instead set up a multicast destination PGID for traffic copied to
1745 * the CPU. Whitelisted MAC addresses like the port netdevice MAC
1746 * addresses will be copied to the CPU via this PGID.
1748 ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
1749 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
1750 ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
1751 ANA_PORT_PORT_CFG, cpu);
1753 /* Enable CPU port module */
1754 ocelot_fields_write(ocelot, cpu, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
1755 /* CPU port Injection/Extraction configuration */
1756 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_XTR_HDR,
1757 OCELOT_TAG_PREFIX_NONE);
1758 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_INJ_HDR,
1759 OCELOT_TAG_PREFIX_NONE);
1761 /* Configure the CPU port to be VLAN aware */
1762 ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(0) |
1763 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
1764 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
1765 ANA_PORT_VLAN_CFG, cpu);
1768 static void ocelot_detect_features(struct ocelot *ocelot)
1772 /* For Ocelot, Felix, Seville, Serval etc, SYS:MMGT:MMGT:FREECNT holds
1773 * the number of 240-byte free memory words (aka 4-cell chunks) and not
1774 * 192 bytes as the documentation incorrectly says.
1776 mmgt = ocelot_read(ocelot, SYS_MMGT);
1777 ocelot->packet_buffer_size = 240 * SYS_MMGT_FREECNT(mmgt);
1779 eq_ctrl = ocelot_read(ocelot, QSYS_EQ_CTRL);
1780 ocelot->num_frame_refs = QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(eq_ctrl);
1783 int ocelot_init(struct ocelot *ocelot)
1785 char queue_name[32];
1789 if (ocelot->ops->reset) {
1790 ret = ocelot->ops->reset(ocelot);
1792 dev_err(ocelot->dev, "Switch reset failed\n");
1797 ocelot->stats = devm_kcalloc(ocelot->dev,
1798 ocelot->num_phys_ports * ocelot->num_stats,
1799 sizeof(u64), GFP_KERNEL);
1803 mutex_init(&ocelot->stats_lock);
1804 mutex_init(&ocelot->ptp_lock);
1805 spin_lock_init(&ocelot->ptp_clock_lock);
1806 snprintf(queue_name, sizeof(queue_name), "%s-stats",
1807 dev_name(ocelot->dev));
1808 ocelot->stats_queue = create_singlethread_workqueue(queue_name);
1809 if (!ocelot->stats_queue)
1812 ocelot->owq = alloc_ordered_workqueue("ocelot-owq", 0);
1814 destroy_workqueue(ocelot->stats_queue);
1818 INIT_LIST_HEAD(&ocelot->multicast);
1819 INIT_LIST_HEAD(&ocelot->pgids);
1820 ocelot_detect_features(ocelot);
1821 ocelot_mact_init(ocelot);
1822 ocelot_vlan_init(ocelot);
1823 ocelot_vcap_init(ocelot);
1824 ocelot_cpu_port_init(ocelot);
1826 for (port = 0; port < ocelot->num_phys_ports; port++) {
1827 /* Clear all counters (5 groups) */
1828 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
1829 SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f),
1833 /* Only use S-Tag */
1834 ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG);
1836 /* Aggregation mode */
1837 ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
1838 ANA_AGGR_CFG_AC_DMAC_ENA |
1839 ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
1840 ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA |
1841 ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA |
1842 ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA,
1845 /* Set MAC age time to default value. The entry is aged after
1848 ocelot_write(ocelot,
1849 ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ),
1852 /* Disable learning for frames discarded by VLAN ingress filtering */
1853 regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1);
1855 /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */
1856 ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA |
1857 SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING);
1859 /* Setup flooding PGIDs */
1860 for (i = 0; i < ocelot->num_flooding_pgids; i++)
1861 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) |
1862 ANA_FLOODING_FLD_BROADCAST(PGID_BC) |
1863 ANA_FLOODING_FLD_UNICAST(PGID_UC),
1865 ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) |
1866 ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) |
1867 ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) |
1868 ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC),
1871 for (port = 0; port < ocelot->num_phys_ports; port++) {
1872 /* Transmit the frame to the local port. */
1873 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
1874 /* Do not forward BPDU frames to the front ports. */
1875 ocelot_write_gix(ocelot,
1876 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
1877 ANA_PORT_CPU_FWD_BPDU_CFG,
1879 /* Ensure bridging is disabled */
1880 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port);
1883 for_each_nonreserved_multicast_dest_pgid(ocelot, i) {
1884 u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0));
1886 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
1888 /* Allow broadcast and unknown L2 multicast to the CPU. */
1889 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
1890 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
1891 ANA_PGID_PGID, PGID_MC);
1892 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
1893 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)),
1894 ANA_PGID_PGID, PGID_BC);
1895 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4);
1896 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6);
1898 /* Allow manual injection via DEVCPU_QS registers, and byte swap these
1899 * registers endianness.
1901 ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP |
1902 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0);
1903 ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP |
1904 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0);
1905 ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) |
1906 ANA_CPUQ_CFG_CPUQ_LRN(2) |
1907 ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) |
1908 ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) |
1909 ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) |
1910 ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) |
1911 ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) |
1912 ANA_CPUQ_CFG_CPUQ_IGMP(6) |
1913 ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG);
1914 for (i = 0; i < 16; i++)
1915 ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) |
1916 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6),
1917 ANA_CPUQ_8021_CFG, i);
1919 INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work);
1920 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
1921 OCELOT_STATS_CHECK_DELAY);
1925 EXPORT_SYMBOL(ocelot_init);
1927 void ocelot_deinit(struct ocelot *ocelot)
1929 cancel_delayed_work(&ocelot->stats_work);
1930 destroy_workqueue(ocelot->stats_queue);
1931 destroy_workqueue(ocelot->owq);
1932 mutex_destroy(&ocelot->stats_lock);
1934 EXPORT_SYMBOL(ocelot_deinit);
1936 void ocelot_deinit_port(struct ocelot *ocelot, int port)
1938 struct ocelot_port *ocelot_port = ocelot->ports[port];
1940 skb_queue_purge(&ocelot_port->tx_skbs);
1942 EXPORT_SYMBOL(ocelot_deinit_port);
1944 MODULE_LICENSE("Dual MIT/GPL");