2 * Broadcom Starfighter 2 DSA switch driver
4 * Copyright (C) 2014, Broadcom Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/list.h>
13 #include <linux/module.h>
14 #include <linux/netdevice.h>
15 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
18 #include <linux/phy.h>
19 #include <linux/phy_fixed.h>
20 #include <linux/mii.h>
22 #include <linux/of_irq.h>
23 #include <linux/of_address.h>
24 #include <linux/of_net.h>
26 #include <linux/ethtool.h>
27 #include <linux/if_bridge.h>
28 #include <linux/brcmphy.h>
29 #include <linux/etherdevice.h>
30 #include <net/switchdev.h>
33 #include "bcm_sf2_regs.h"
35 /* String, offset, and register size in bytes if different from 4 bytes */
36 static const struct bcm_sf2_hw_stats bcm_sf2_mib[] = {
37 { "TxOctets", 0x000, 8 },
38 { "TxDropPkts", 0x020 },
39 { "TxQPKTQ0", 0x030 },
40 { "TxBroadcastPkts", 0x040 },
41 { "TxMulticastPkts", 0x050 },
42 { "TxUnicastPKts", 0x060 },
43 { "TxCollisions", 0x070 },
44 { "TxSingleCollision", 0x080 },
45 { "TxMultipleCollision", 0x090 },
46 { "TxDeferredCollision", 0x0a0 },
47 { "TxLateCollision", 0x0b0 },
48 { "TxExcessiveCollision", 0x0c0 },
49 { "TxFrameInDisc", 0x0d0 },
50 { "TxPausePkts", 0x0e0 },
51 { "TxQPKTQ1", 0x0f0 },
52 { "TxQPKTQ2", 0x100 },
53 { "TxQPKTQ3", 0x110 },
54 { "TxQPKTQ4", 0x120 },
55 { "TxQPKTQ5", 0x130 },
56 { "RxOctets", 0x140, 8 },
57 { "RxUndersizePkts", 0x160 },
58 { "RxPausePkts", 0x170 },
59 { "RxPkts64Octets", 0x180 },
60 { "RxPkts65to127Octets", 0x190 },
61 { "RxPkts128to255Octets", 0x1a0 },
62 { "RxPkts256to511Octets", 0x1b0 },
63 { "RxPkts512to1023Octets", 0x1c0 },
64 { "RxPkts1024toMaxPktsOctets", 0x1d0 },
65 { "RxOversizePkts", 0x1e0 },
66 { "RxJabbers", 0x1f0 },
67 { "RxAlignmentErrors", 0x200 },
68 { "RxFCSErrors", 0x210 },
69 { "RxGoodOctets", 0x220, 8 },
70 { "RxDropPkts", 0x240 },
71 { "RxUnicastPkts", 0x250 },
72 { "RxMulticastPkts", 0x260 },
73 { "RxBroadcastPkts", 0x270 },
74 { "RxSAChanges", 0x280 },
75 { "RxFragments", 0x290 },
76 { "RxJumboPkt", 0x2a0 },
77 { "RxSymblErr", 0x2b0 },
78 { "InRangeErrCount", 0x2c0 },
79 { "OutRangeErrCount", 0x2d0 },
80 { "EEELpiEvent", 0x2e0 },
81 { "EEELpiDuration", 0x2f0 },
82 { "RxDiscard", 0x300, 8 },
83 { "TxQPKTQ6", 0x320 },
84 { "TxQPKTQ7", 0x330 },
85 { "TxPkts64Octets", 0x340 },
86 { "TxPkts65to127Octets", 0x350 },
87 { "TxPkts128to255Octets", 0x360 },
88 { "TxPkts256to511Ocets", 0x370 },
89 { "TxPkts512to1023Ocets", 0x380 },
90 { "TxPkts1024toMaxPktOcets", 0x390 },
93 #define BCM_SF2_STATS_SIZE ARRAY_SIZE(bcm_sf2_mib)
95 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds,
96 int port, uint8_t *data)
100 for (i = 0; i < BCM_SF2_STATS_SIZE; i++)
101 memcpy(data + i * ETH_GSTRING_LEN,
102 bcm_sf2_mib[i].string, ETH_GSTRING_LEN);
105 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds,
106 int port, uint64_t *data)
108 struct bcm_sf2_priv *priv = ds_to_priv(ds);
109 const struct bcm_sf2_hw_stats *s;
114 mutex_lock(&priv->stats_mutex);
116 /* Now fetch the per-port counters */
117 for (i = 0; i < BCM_SF2_STATS_SIZE; i++) {
120 /* Do a latched 64-bit read if needed */
121 offset = s->reg + CORE_P_MIB_OFFSET(port);
122 if (s->sizeof_stat == 8)
123 val = core_readq(priv, offset);
125 val = core_readl(priv, offset);
130 mutex_unlock(&priv->stats_mutex);
133 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds)
135 return BCM_SF2_STATS_SIZE;
138 static const char *bcm_sf2_sw_drv_probe(struct device *dsa_dev,
139 struct device *host_dev, int sw_addr,
142 struct bcm_sf2_priv *priv;
144 priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL);
149 return "Broadcom Starfighter 2";
152 static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
154 struct bcm_sf2_priv *priv = ds_to_priv(ds);
158 /* Enable the IMP Port to be in the same VLAN as the other ports
159 * on a per-port basis such that we only have Port i and IMP in
162 for (i = 0; i < priv->hw_params.num_ports; i++) {
163 if (!((1 << i) & ds->enabled_port_mask))
166 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i));
167 reg |= (1 << cpu_port);
168 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i));
172 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
174 struct bcm_sf2_priv *priv = ds_to_priv(ds);
177 /* Enable the port memories */
178 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
179 reg &= ~P_TXQ_PSM_VDD(port);
180 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
182 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
183 reg = core_readl(priv, CORE_IMP_CTL);
184 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
185 reg &= ~(RX_DIS | TX_DIS);
186 core_writel(priv, reg, CORE_IMP_CTL);
188 /* Enable forwarding */
189 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
191 /* Enable IMP port in dumb mode */
192 reg = core_readl(priv, CORE_SWITCH_CTRL);
193 reg |= MII_DUMB_FWDG_EN;
194 core_writel(priv, reg, CORE_SWITCH_CTRL);
196 /* Resolve which bit controls the Broadcom tag */
199 val = BRCM_HDR_EN_P8;
202 val = BRCM_HDR_EN_P7;
205 val = BRCM_HDR_EN_P5;
212 /* Enable Broadcom tags for IMP port */
213 reg = core_readl(priv, CORE_BRCM_HDR_CTRL);
215 core_writel(priv, reg, CORE_BRCM_HDR_CTRL);
217 /* Enable reception Broadcom tag for CPU TX (switch RX) to
218 * allow us to tag outgoing frames
220 reg = core_readl(priv, CORE_BRCM_HDR_RX_DIS);
222 core_writel(priv, reg, CORE_BRCM_HDR_RX_DIS);
224 /* Enable transmission of Broadcom tags from the switch (CPU RX) to
225 * allow delivering frames to the per-port net_devices
227 reg = core_readl(priv, CORE_BRCM_HDR_TX_DIS);
229 core_writel(priv, reg, CORE_BRCM_HDR_TX_DIS);
231 /* Force link status for IMP port */
232 reg = core_readl(priv, CORE_STS_OVERRIDE_IMP);
233 reg |= (MII_SW_OR | LINK_STS);
234 core_writel(priv, reg, CORE_STS_OVERRIDE_IMP);
237 static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
239 struct bcm_sf2_priv *priv = ds_to_priv(ds);
242 reg = core_readl(priv, CORE_EEE_EN_CTRL);
247 core_writel(priv, reg, CORE_EEE_EN_CTRL);
250 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
252 struct bcm_sf2_priv *priv = ds_to_priv(ds);
255 reg = reg_readl(priv, REG_SPHY_CNTRL);
258 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | CK25_DIS);
259 reg_writel(priv, reg, REG_SPHY_CNTRL);
261 reg = reg_readl(priv, REG_SPHY_CNTRL);
264 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
265 reg_writel(priv, reg, REG_SPHY_CNTRL);
269 reg_writel(priv, reg, REG_SPHY_CNTRL);
271 /* Use PHY-driven LED signaling */
273 reg = reg_readl(priv, REG_LED_CNTRL(0));
274 reg |= SPDLNK_SRC_SEL;
275 reg_writel(priv, reg, REG_LED_CNTRL(0));
279 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
289 /* Port 0 interrupts are located on the first bank */
290 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
293 off = P_IRQ_OFF(port);
297 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
300 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
310 /* Port 0 interrupts are located on the first bank */
311 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
312 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
315 off = P_IRQ_OFF(port);
319 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
320 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
323 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
324 struct phy_device *phy)
326 struct bcm_sf2_priv *priv = ds_to_priv(ds);
327 s8 cpu_port = ds->dst[ds->index].cpu_port;
330 /* Clear the memory power down */
331 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
332 reg &= ~P_TXQ_PSM_VDD(port);
333 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
335 /* Clear the Rx and Tx disable bits and set to no spanning tree */
336 core_writel(priv, 0, CORE_G_PCTL_PORT(port));
338 /* Re-enable the GPHY and re-apply workarounds */
339 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
340 bcm_sf2_gphy_enable_set(ds, true);
342 /* if phy_stop() has been called before, phy
343 * will be in halted state, and phy_start()
346 * the resume path does not configure back
347 * autoneg settings, and since we hard reset
348 * the phy manually here, we need to reset the
349 * state machine also.
351 phy->state = PHY_READY;
356 /* Enable MoCA port interrupts to get notified */
357 if (port == priv->moca_port)
358 bcm_sf2_port_intr_enable(priv, port);
360 /* Set this port, and only this one to be in the default VLAN,
361 * if member of a bridge, restore its membership prior to
362 * bringing down this port.
364 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port));
365 reg &= ~PORT_VLAN_CTRL_MASK;
367 reg |= priv->port_sts[port].vlan_ctl_mask;
368 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(port));
370 bcm_sf2_imp_vlan_setup(ds, cpu_port);
372 /* If EEE was enabled, restore it */
373 if (priv->port_sts[port].eee.eee_enabled)
374 bcm_sf2_eee_enable_set(ds, port, true);
379 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port,
380 struct phy_device *phy)
382 struct bcm_sf2_priv *priv = ds_to_priv(ds);
385 if (priv->wol_ports_mask & (1 << port))
388 if (port == priv->moca_port)
389 bcm_sf2_port_intr_disable(priv, port);
391 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
392 bcm_sf2_gphy_enable_set(ds, false);
394 if (dsa_is_cpu_port(ds, port))
397 off = CORE_G_PCTL_PORT(port);
399 reg = core_readl(priv, off);
400 reg |= RX_DIS | TX_DIS;
401 core_writel(priv, reg, off);
403 /* Power down the port memory */
404 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
405 reg |= P_TXQ_PSM_VDD(port);
406 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
409 /* Returns 0 if EEE was not enabled, or 1 otherwise
411 static int bcm_sf2_eee_init(struct dsa_switch *ds, int port,
412 struct phy_device *phy)
414 struct bcm_sf2_priv *priv = ds_to_priv(ds);
415 struct ethtool_eee *p = &priv->port_sts[port].eee;
418 p->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full);
420 ret = phy_init_eee(phy, 0);
424 bcm_sf2_eee_enable_set(ds, port, true);
429 static int bcm_sf2_sw_get_eee(struct dsa_switch *ds, int port,
430 struct ethtool_eee *e)
432 struct bcm_sf2_priv *priv = ds_to_priv(ds);
433 struct ethtool_eee *p = &priv->port_sts[port].eee;
436 reg = core_readl(priv, CORE_EEE_LPI_INDICATE);
437 e->eee_enabled = p->eee_enabled;
438 e->eee_active = !!(reg & (1 << port));
443 static int bcm_sf2_sw_set_eee(struct dsa_switch *ds, int port,
444 struct phy_device *phydev,
445 struct ethtool_eee *e)
447 struct bcm_sf2_priv *priv = ds_to_priv(ds);
448 struct ethtool_eee *p = &priv->port_sts[port].eee;
450 p->eee_enabled = e->eee_enabled;
452 if (!p->eee_enabled) {
453 bcm_sf2_eee_enable_set(ds, port, false);
455 p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev);
463 /* Fast-ageing of ARL entries for a given port, equivalent to an ARL
464 * flush for that port.
466 static int bcm_sf2_sw_fast_age_port(struct dsa_switch *ds, int port)
468 struct bcm_sf2_priv *priv = ds_to_priv(ds);
469 unsigned int timeout = 1000;
472 core_writel(priv, port, CORE_FAST_AGE_PORT);
474 reg = core_readl(priv, CORE_FAST_AGE_CTRL);
475 reg |= EN_AGE_PORT | EN_AGE_DYNAMIC | FAST_AGE_STR_DONE;
476 core_writel(priv, reg, CORE_FAST_AGE_CTRL);
479 reg = core_readl(priv, CORE_FAST_AGE_CTRL);
480 if (!(reg & FAST_AGE_STR_DONE))
489 core_writel(priv, 0, CORE_FAST_AGE_CTRL);
494 static int bcm_sf2_sw_br_join(struct dsa_switch *ds, int port,
495 struct net_device *bridge)
497 struct bcm_sf2_priv *priv = ds_to_priv(ds);
501 priv->port_sts[port].bridge_dev = bridge;
502 p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port));
504 for (i = 0; i < priv->hw_params.num_ports; i++) {
505 if (priv->port_sts[i].bridge_dev != bridge)
508 /* Add this local port to the remote port VLAN control
509 * membership and update the remote port bitmask
511 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i));
513 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i));
514 priv->port_sts[i].vlan_ctl_mask = reg;
519 /* Configure the local port VLAN control membership to include
520 * remote ports and update the local port bitmask
522 core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port));
523 priv->port_sts[port].vlan_ctl_mask = p_ctl;
528 static void bcm_sf2_sw_br_leave(struct dsa_switch *ds, int port)
530 struct bcm_sf2_priv *priv = ds_to_priv(ds);
531 struct net_device *bridge = priv->port_sts[port].bridge_dev;
535 p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port));
537 for (i = 0; i < priv->hw_params.num_ports; i++) {
538 /* Don't touch the remaining ports */
539 if (priv->port_sts[i].bridge_dev != bridge)
542 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i));
544 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i));
545 priv->port_sts[port].vlan_ctl_mask = reg;
547 /* Prevent self removal to preserve isolation */
552 core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port));
553 priv->port_sts[port].vlan_ctl_mask = p_ctl;
554 priv->port_sts[port].bridge_dev = NULL;
557 static void bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port,
560 struct bcm_sf2_priv *priv = ds_to_priv(ds);
561 u8 hw_state, cur_hw_state;
564 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
565 cur_hw_state = reg & (G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT);
568 case BR_STATE_DISABLED:
569 hw_state = G_MISTP_DIS_STATE;
571 case BR_STATE_LISTENING:
572 hw_state = G_MISTP_LISTEN_STATE;
574 case BR_STATE_LEARNING:
575 hw_state = G_MISTP_LEARN_STATE;
577 case BR_STATE_FORWARDING:
578 hw_state = G_MISTP_FWD_STATE;
580 case BR_STATE_BLOCKING:
581 hw_state = G_MISTP_BLOCK_STATE;
584 pr_err("%s: invalid STP state: %d\n", __func__, state);
588 /* Fast-age ARL entries if we are moving a port from Learning or
589 * Forwarding (cur_hw_state) state to Disabled, Blocking or Listening
592 if (cur_hw_state != hw_state) {
593 if (cur_hw_state >= G_MISTP_LEARN_STATE &&
594 hw_state <= G_MISTP_LISTEN_STATE) {
595 if (bcm_sf2_sw_fast_age_port(ds, port)) {
596 pr_err("%s: fast-ageing failed\n", __func__);
602 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
603 reg &= ~(G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT);
605 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
608 /* Address Resolution Logic routines */
609 static int bcm_sf2_arl_op_wait(struct bcm_sf2_priv *priv)
611 unsigned int timeout = 10;
615 reg = core_readl(priv, CORE_ARLA_RWCTL);
616 if (!(reg & ARL_STRTDN))
619 usleep_range(1000, 2000);
625 static int bcm_sf2_arl_rw_op(struct bcm_sf2_priv *priv, unsigned int op)
632 cmd = core_readl(priv, CORE_ARLA_RWCTL);
633 cmd &= ~IVL_SVL_SELECT;
639 core_writel(priv, cmd, CORE_ARLA_RWCTL);
641 return bcm_sf2_arl_op_wait(priv);
644 static int bcm_sf2_arl_read(struct bcm_sf2_priv *priv, u64 mac,
645 u16 vid, struct bcm_sf2_arl_entry *ent, u8 *idx,
651 ret = bcm_sf2_arl_op_wait(priv);
655 /* Read the 4 bins */
656 for (i = 0; i < 4; i++) {
660 mac_vid = core_readq(priv, CORE_ARLA_MACVID_ENTRY(i));
661 fwd_entry = core_readl(priv, CORE_ARLA_FWD_ENTRY(i));
662 bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry);
664 if (ent->is_valid && is_valid) {
669 /* This is the MAC we just deleted */
670 if (!is_valid && (mac_vid & mac))
677 static int bcm_sf2_arl_op(struct bcm_sf2_priv *priv, int op, int port,
678 const unsigned char *addr, u16 vid, bool is_valid)
680 struct bcm_sf2_arl_entry ent;
682 u64 mac, mac_vid = 0;
686 /* Convert the array into a 64-bit MAC */
687 mac = bcm_sf2_mac_to_u64(addr);
689 /* Perform a read for the given MAC and VID */
690 core_writeq(priv, mac, CORE_ARLA_MAC);
691 core_writel(priv, vid, CORE_ARLA_VID);
693 /* Issue a read operation for this MAC */
694 ret = bcm_sf2_arl_rw_op(priv, 1);
698 ret = bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid);
699 /* If this is a read, just finish now */
703 /* We could not find a matching MAC, so reset to a new entry */
709 memset(&ent, 0, sizeof(ent));
711 ent.is_valid = is_valid;
713 ent.is_static = true;
714 memcpy(ent.mac, addr, ETH_ALEN);
715 bcm_sf2_arl_from_entry(&mac_vid, &fwd_entry, &ent);
717 core_writeq(priv, mac_vid, CORE_ARLA_MACVID_ENTRY(idx));
718 core_writel(priv, fwd_entry, CORE_ARLA_FWD_ENTRY(idx));
720 ret = bcm_sf2_arl_rw_op(priv, 0);
724 /* Re-read the entry to check */
725 return bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid);
728 static int bcm_sf2_sw_fdb_prepare(struct dsa_switch *ds, int port,
729 const struct switchdev_obj_port_fdb *fdb,
730 struct switchdev_trans *trans)
732 /* We do not need to do anything specific here yet */
736 static void bcm_sf2_sw_fdb_add(struct dsa_switch *ds, int port,
737 const struct switchdev_obj_port_fdb *fdb,
738 struct switchdev_trans *trans)
740 struct bcm_sf2_priv *priv = ds_to_priv(ds);
742 if (bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, true))
743 pr_err("%s: failed to add MAC address\n", __func__);
746 static int bcm_sf2_sw_fdb_del(struct dsa_switch *ds, int port,
747 const struct switchdev_obj_port_fdb *fdb)
749 struct bcm_sf2_priv *priv = ds_to_priv(ds);
751 return bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, false);
754 static int bcm_sf2_arl_search_wait(struct bcm_sf2_priv *priv)
756 unsigned timeout = 1000;
760 reg = core_readl(priv, CORE_ARLA_SRCH_CTL);
761 if (!(reg & ARLA_SRCH_STDN))
764 if (reg & ARLA_SRCH_VLID)
767 usleep_range(1000, 2000);
773 static void bcm_sf2_arl_search_rd(struct bcm_sf2_priv *priv, u8 idx,
774 struct bcm_sf2_arl_entry *ent)
779 mac_vid = core_readq(priv, CORE_ARLA_SRCH_RSLT_MACVID(idx));
780 fwd_entry = core_readl(priv, CORE_ARLA_SRCH_RSLT(idx));
781 bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry);
784 static int bcm_sf2_sw_fdb_copy(struct net_device *dev, int port,
785 const struct bcm_sf2_arl_entry *ent,
786 struct switchdev_obj_port_fdb *fdb,
787 int (*cb)(struct switchdev_obj *obj))
792 if (port != ent->port)
795 ether_addr_copy(fdb->addr, ent->mac);
797 fdb->ndm_state = ent->is_static ? NUD_NOARP : NUD_REACHABLE;
799 return cb(&fdb->obj);
802 static int bcm_sf2_sw_fdb_dump(struct dsa_switch *ds, int port,
803 struct switchdev_obj_port_fdb *fdb,
804 int (*cb)(struct switchdev_obj *obj))
806 struct bcm_sf2_priv *priv = ds_to_priv(ds);
807 struct net_device *dev = ds->ports[port];
808 struct bcm_sf2_arl_entry results[2];
809 unsigned int count = 0;
812 /* Start search operation */
813 core_writel(priv, ARLA_SRCH_STDN, CORE_ARLA_SRCH_CTL);
816 ret = bcm_sf2_arl_search_wait(priv);
820 /* Read both entries, then return their values back */
821 bcm_sf2_arl_search_rd(priv, 0, &results[0]);
822 ret = bcm_sf2_sw_fdb_copy(dev, port, &results[0], fdb, cb);
826 bcm_sf2_arl_search_rd(priv, 1, &results[1]);
827 ret = bcm_sf2_sw_fdb_copy(dev, port, &results[1], fdb, cb);
831 if (!results[0].is_valid && !results[1].is_valid)
834 } while (count++ < CORE_ARLA_NUM_ENTRIES);
839 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
841 struct bcm_sf2_priv *priv = dev_id;
843 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
845 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
850 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
852 struct bcm_sf2_priv *priv = dev_id;
854 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
856 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
858 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF))
859 priv->port_sts[7].link = 1;
860 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF))
861 priv->port_sts[7].link = 0;
866 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
868 unsigned int timeout = 1000;
871 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
872 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
873 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
876 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
877 if (!(reg & SOFTWARE_RESET))
880 usleep_range(1000, 2000);
881 } while (timeout-- > 0);
889 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
891 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
892 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
893 intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
894 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
895 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
896 intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
899 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
900 struct device_node *dn)
902 struct device_node *port;
903 const char *phy_mode_str;
905 unsigned int port_num;
908 priv->moca_port = -1;
910 for_each_available_child_of_node(dn, port) {
911 if (of_property_read_u32(port, "reg", &port_num))
914 /* Internal PHYs get assigned a specific 'phy-mode' property
915 * value: "internal" to help flag them before MDIO probing
916 * has completed, since they might be turned off at that
919 mode = of_get_phy_mode(port);
921 ret = of_property_read_string(port, "phy-mode",
926 if (!strcasecmp(phy_mode_str, "internal"))
927 priv->int_phy_mask |= 1 << port_num;
930 if (mode == PHY_INTERFACE_MODE_MOCA)
931 priv->moca_port = port_num;
935 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
937 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
938 struct bcm_sf2_priv *priv = ds_to_priv(ds);
939 struct device_node *dn;
946 spin_lock_init(&priv->indir_lock);
947 mutex_init(&priv->stats_mutex);
949 /* All the interesting properties are at the parent device_node
952 dn = ds->cd->of_node->parent;
953 bcm_sf2_identify_ports(priv, ds->cd->of_node);
955 priv->irq0 = irq_of_parse_and_map(dn, 0);
956 priv->irq1 = irq_of_parse_and_map(dn, 1);
959 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
960 *base = of_iomap(dn, i);
962 pr_err("unable to find register: %s\n", reg_names[i]);
969 ret = bcm_sf2_sw_rst(priv);
971 pr_err("unable to software reset switch: %d\n", ret);
975 /* Disable all interrupts and request them */
976 bcm_sf2_intr_disable(priv);
978 ret = request_irq(priv->irq0, bcm_sf2_switch_0_isr, 0,
981 pr_err("failed to request switch_0 IRQ\n");
985 ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0,
988 pr_err("failed to request switch_1 IRQ\n");
992 /* Reset the MIB counters */
993 reg = core_readl(priv, CORE_GMNCFGCFG);
995 core_writel(priv, reg, CORE_GMNCFGCFG);
997 core_writel(priv, reg, CORE_GMNCFGCFG);
999 /* Get the maximum number of ports for this switch */
1000 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1001 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1002 priv->hw_params.num_ports = DSA_MAX_PORTS;
1004 /* Assume a single GPHY setup if we can't read that property */
1005 if (of_property_read_u32(dn, "brcm,num-gphy",
1006 &priv->hw_params.num_gphy))
1007 priv->hw_params.num_gphy = 1;
1009 /* Enable all valid ports and disable those unused */
1010 for (port = 0; port < priv->hw_params.num_ports; port++) {
1011 /* IMP port receives special treatment */
1012 if ((1 << port) & ds->enabled_port_mask)
1013 bcm_sf2_port_setup(ds, port, NULL);
1014 else if (dsa_is_cpu_port(ds, port))
1015 bcm_sf2_imp_setup(ds, port);
1017 bcm_sf2_port_disable(ds, port, NULL);
1020 /* Include the pseudo-PHY address and the broadcast PHY address to
1021 * divert reads towards our workaround. This is only required for
1022 * 7445D0, since 7445E0 disconnects the internal switch pseudo-PHY such
1023 * that we can use the regular SWITCH_MDIO master controller instead.
1025 * By default, DSA initializes ds->phys_mii_mask to
1026 * ds->enabled_port_mask to have a 1:1 mapping between Port address
1027 * and PHY address in order to utilize the slave_mii_bus instance to
1028 * read from Port PHYs. This is not what we want here, so we
1029 * initialize phys_mii_mask 0 to always utilize the "master" MDIO
1030 * bus backed by the "mdio-unimac" driver.
1032 if (of_machine_is_compatible("brcm,bcm7445d0"))
1033 ds->phys_mii_mask |= ((1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0));
1035 ds->phys_mii_mask = 0;
1037 rev = reg_readl(priv, REG_SWITCH_REVISION);
1038 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1039 SWITCH_TOP_REV_MASK;
1040 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1042 rev = reg_readl(priv, REG_PHY_REVISION);
1043 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1045 pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n",
1046 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1047 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1048 priv->core, priv->irq0, priv->irq1);
1053 free_irq(priv->irq0, priv);
1056 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1064 static int bcm_sf2_sw_set_addr(struct dsa_switch *ds, u8 *addr)
1069 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
1071 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1073 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
1074 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
1075 * the REG_PHY_REVISION register layout is.
1078 return priv->hw_params.gphy_rev;
1081 static int bcm_sf2_sw_indir_rw(struct dsa_switch *ds, int op, int addr,
1082 int regnum, u16 val)
1084 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1088 reg = reg_readl(priv, REG_SWITCH_CNTRL);
1089 reg |= MDIO_MASTER_SEL;
1090 reg_writel(priv, reg, REG_SWITCH_CNTRL);
1092 /* Page << 8 | offset */
1095 core_writel(priv, addr, reg);
1097 /* Page << 8 | offset */
1098 reg = 0x80 << 8 | regnum << 1;
1102 ret = core_readl(priv, reg);
1104 core_writel(priv, val, reg);
1106 reg = reg_readl(priv, REG_SWITCH_CNTRL);
1107 reg &= ~MDIO_MASTER_SEL;
1108 reg_writel(priv, reg, REG_SWITCH_CNTRL);
1110 return ret & 0xffff;
1113 static int bcm_sf2_sw_phy_read(struct dsa_switch *ds, int addr, int regnum)
1115 /* Intercept reads from the MDIO broadcast address or Broadcom
1116 * pseudo-PHY address
1120 case BRCM_PSEUDO_PHY_ADDR:
1121 return bcm_sf2_sw_indir_rw(ds, 1, addr, regnum, 0);
1127 static int bcm_sf2_sw_phy_write(struct dsa_switch *ds, int addr, int regnum,
1130 /* Intercept writes to the MDIO broadcast address or Broadcom
1131 * pseudo-PHY address
1135 case BRCM_PSEUDO_PHY_ADDR:
1136 bcm_sf2_sw_indir_rw(ds, 0, addr, regnum, val);
1143 static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port,
1144 struct phy_device *phydev)
1146 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1147 u32 id_mode_dis = 0, port_mode;
1148 const char *str = NULL;
1151 switch (phydev->interface) {
1152 case PHY_INTERFACE_MODE_RGMII:
1153 str = "RGMII (no delay)";
1155 case PHY_INTERFACE_MODE_RGMII_TXID:
1157 str = "RGMII (TX delay)";
1158 port_mode = EXT_GPHY;
1160 case PHY_INTERFACE_MODE_MII:
1162 port_mode = EXT_EPHY;
1164 case PHY_INTERFACE_MODE_REVMII:
1165 str = "Reverse MII";
1166 port_mode = EXT_REVMII;
1169 /* All other PHYs: internal and MoCA */
1173 /* If the link is down, just disable the interface to conserve power */
1174 if (!phydev->link) {
1175 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
1176 reg &= ~RGMII_MODE_EN;
1177 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
1181 /* Clear id_mode_dis bit, and the existing port mode, but
1182 * make sure we enable the RGMII block for data to pass
1184 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
1185 reg &= ~ID_MODE_DIS;
1186 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
1187 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
1189 reg |= port_mode | RGMII_MODE_EN;
1193 if (phydev->pause) {
1194 if (phydev->asym_pause)
1199 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
1201 pr_info("Port %d configured for %s\n", port, str);
1204 /* Force link settings detected from the PHY */
1206 switch (phydev->speed) {
1208 reg |= SPDSTS_1000 << SPEED_SHIFT;
1211 reg |= SPDSTS_100 << SPEED_SHIFT;
1217 if (phydev->duplex == DUPLEX_FULL)
1220 core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
1223 static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
1224 struct fixed_phy_status *status)
1226 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1230 duplex = core_readl(priv, CORE_DUPSTS);
1231 pause = core_readl(priv, CORE_PAUSESTS);
1235 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
1236 * which means that we need to force the link at the port override
1237 * level to get the data to flow. We do use what the interrupt handler
1238 * did determine before.
1240 * For the other ports, we just force the link status, since this is
1241 * a fixed PHY device.
1243 if (port == priv->moca_port) {
1244 status->link = priv->port_sts[port].link;
1245 /* For MoCA interfaces, also force a link down notification
1246 * since some version of the user-space daemon (mocad) use
1247 * cmd->autoneg to force the link, which messes up the PHY
1248 * state machine and make it go in PHY_FORCING state instead.
1251 netif_carrier_off(ds->ports[port]);
1255 status->duplex = !!(duplex & (1 << port));
1258 reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port));
1264 core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
1266 if ((pause & (1 << port)) &&
1267 (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) {
1268 status->asym_pause = 1;
1272 if (pause & (1 << port))
1276 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
1278 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1281 bcm_sf2_intr_disable(priv);
1283 /* Disable all ports physically present including the IMP
1284 * port, the other ones have already been disabled during
1287 for (port = 0; port < DSA_MAX_PORTS; port++) {
1288 if ((1 << port) & ds->enabled_port_mask ||
1289 dsa_is_cpu_port(ds, port))
1290 bcm_sf2_port_disable(ds, port, NULL);
1296 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
1298 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1302 ret = bcm_sf2_sw_rst(priv);
1304 pr_err("%s: failed to software reset switch\n", __func__);
1308 if (priv->hw_params.num_gphy == 1)
1309 bcm_sf2_gphy_enable_set(ds, true);
1311 for (port = 0; port < DSA_MAX_PORTS; port++) {
1312 if ((1 << port) & ds->enabled_port_mask)
1313 bcm_sf2_port_setup(ds, port, NULL);
1314 else if (dsa_is_cpu_port(ds, port))
1315 bcm_sf2_imp_setup(ds, port);
1321 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
1322 struct ethtool_wolinfo *wol)
1324 struct net_device *p = ds->dst[ds->index].master_netdev;
1325 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1326 struct ethtool_wolinfo pwol;
1328 /* Get the parent device WoL settings */
1329 p->ethtool_ops->get_wol(p, &pwol);
1331 /* Advertise the parent device supported settings */
1332 wol->supported = pwol.supported;
1333 memset(&wol->sopass, 0, sizeof(wol->sopass));
1335 if (pwol.wolopts & WAKE_MAGICSECURE)
1336 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
1338 if (priv->wol_ports_mask & (1 << port))
1339 wol->wolopts = pwol.wolopts;
1344 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
1345 struct ethtool_wolinfo *wol)
1347 struct net_device *p = ds->dst[ds->index].master_netdev;
1348 struct bcm_sf2_priv *priv = ds_to_priv(ds);
1349 s8 cpu_port = ds->dst[ds->index].cpu_port;
1350 struct ethtool_wolinfo pwol;
1352 p->ethtool_ops->get_wol(p, &pwol);
1353 if (wol->wolopts & ~pwol.supported)
1357 priv->wol_ports_mask |= (1 << port);
1359 priv->wol_ports_mask &= ~(1 << port);
1361 /* If we have at least one port enabled, make sure the CPU port
1362 * is also enabled. If the CPU port is the last one enabled, we disable
1363 * it since this configuration does not make sense.
1365 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
1366 priv->wol_ports_mask |= (1 << cpu_port);
1368 priv->wol_ports_mask &= ~(1 << cpu_port);
1370 return p->ethtool_ops->set_wol(p, wol);
1373 static struct dsa_switch_driver bcm_sf2_switch_driver = {
1374 .tag_protocol = DSA_TAG_PROTO_BRCM,
1375 .probe = bcm_sf2_sw_drv_probe,
1376 .setup = bcm_sf2_sw_setup,
1377 .set_addr = bcm_sf2_sw_set_addr,
1378 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
1379 .phy_read = bcm_sf2_sw_phy_read,
1380 .phy_write = bcm_sf2_sw_phy_write,
1381 .get_strings = bcm_sf2_sw_get_strings,
1382 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
1383 .get_sset_count = bcm_sf2_sw_get_sset_count,
1384 .adjust_link = bcm_sf2_sw_adjust_link,
1385 .fixed_link_update = bcm_sf2_sw_fixed_link_update,
1386 .suspend = bcm_sf2_sw_suspend,
1387 .resume = bcm_sf2_sw_resume,
1388 .get_wol = bcm_sf2_sw_get_wol,
1389 .set_wol = bcm_sf2_sw_set_wol,
1390 .port_enable = bcm_sf2_port_setup,
1391 .port_disable = bcm_sf2_port_disable,
1392 .get_eee = bcm_sf2_sw_get_eee,
1393 .set_eee = bcm_sf2_sw_set_eee,
1394 .port_bridge_join = bcm_sf2_sw_br_join,
1395 .port_bridge_leave = bcm_sf2_sw_br_leave,
1396 .port_stp_state_set = bcm_sf2_sw_br_set_stp_state,
1397 .port_fdb_prepare = bcm_sf2_sw_fdb_prepare,
1398 .port_fdb_add = bcm_sf2_sw_fdb_add,
1399 .port_fdb_del = bcm_sf2_sw_fdb_del,
1400 .port_fdb_dump = bcm_sf2_sw_fdb_dump,
1403 static int __init bcm_sf2_init(void)
1405 register_switch_driver(&bcm_sf2_switch_driver);
1409 module_init(bcm_sf2_init);
1411 static void __exit bcm_sf2_exit(void)
1413 unregister_switch_driver(&bcm_sf2_switch_driver);
1415 module_exit(bcm_sf2_exit);
1417 MODULE_AUTHOR("Broadcom Corporation");
1418 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1419 MODULE_LICENSE("GPL");
1420 MODULE_ALIAS("platform:brcm-sf2");